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Injection Molding Machine

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ARBURG’s injection molding machines are renowned for their well tried and tested modularity. When it comes to the ALLROUNDER ALLDRIVE (A) series, the principle of modularity also applies to the drives.

The ALLROUNDER A offers the choice of combining the electric main axes with either electric or hydraulic auxiliary axes, depending on which solution is best suited to any specific application. 
The first example of the electric ALLDRIVE series is the ALLROUNDER 420 A 800-400. It has an 800 kN clamping force, 420 x 420 mm distance between tie bars, 400 series injection unit, screw diameters of 35, 40 and 45 mm as well as electric main axes and also an electrically driven five-point toggle system to provide the highest degree of positional accuracy. 
Following the successful introduction of the first ALLDRIVE machine, the series was expanded through modular drive technology to include larger clamping forces. As a result, at Fakuma 2003, which is being held from October 14 to 18 in Friedrichshafen/ Germany, the ALLROUNDER 420 A will for the first time be accompanied by its big brother, the ALLROUNDER 520 A with a clamping force of 1,600 kN. 

plastic molding
plastic molding

The Good injection molding machine A concept

The main functions of the injection molding machine – opening and closing moulds, injection and dosing – have been designed with electric drives as the basic structure. The other movements such as ejection and moving the nozzle and mould functions can either be electric or hydraulic, depending on the operating requirements. 

The movement of the mould closing operation is initiated by rotation of the servomotor to the five-point toggle system via a threaded spindle. This has been specially configured to the dynamic behaviour of the electronic drive.

The injection and dosing movements are converted with high torque via a gear position and a threaded pinion. To operate the movements with optimised use of time and low maintenance, the spindles are equipped with a special cool lubrication system. This ensures a high level of efficiency with low service costs and the longest possible service life. 

The machine series are modular in design due to the choice of auxiliary axes with electric or hydraulic drive. In this way, for example, the eject function can be carried out electrically, extremely accurately and dynamically with a spindle, or it can be carried out conventionally (‘softly’) with a hydraulic cylinder.

The nozzle advance movement, which in essence has a contact force applying function for most applications, is mostly with hydraulics or it can also be carried out electrically.
In ARBURG’s view it is very important that core pulls and specific special movements on the plastic mold, which have previously been integrated hydraulically, continue to be optimally operated with hydraulics in the future. For this reason, a special energy-saving small-accumulator hydraulic system has been developed for the optional hydraulic auxiliary functions on the machine, which can be assembled and dismantled on a modular basis.

Regulation

The basic structure of the electric axes ensures that they are highly dynamic and location-and position-regulated. This produces a reproducible, pin-point procedural sequence. This is mainly used for application with absolute and relative positioning accuracy for the mould and ejection movements.

In this way, for example, stroke-dependent functions such as mould positions in connection with core pull, or final positions when unscrewing, can be achieved extremely accurately.

As all stroke positions are measured absolutely, it is not necessary to carry out a reference movement or set them to a reference point.

On the injection side, the positioning accuracy and the acceleration in conjunction with the position-regulated screw movement can lead to additional accuracy with the injection molded parts. During dosage, the effect of the electric drive can be seen in the accuracy and in the energy requirement. 

When viewed on an individual basis, the options and potential for the improvement described, in conjunction with the well-tried and tested SELOGICA control system, lead to added value in relation to parts production.

The opportunity to operate individual cycle stages simultaneously adds even more importance to the programming of the SELOGICA control system. The appropriate cycle symbols with their comprehensive logistic links are extremely clear and can be used to optimise the procedures.

The synergistic effects of the ALLROUNDER A

During the development of the ALLROUNDER 420 A a great deal of importance was placed on the synthesis between the most up-to-date drive technology and tried and tested injection moulding technology.

In this way the design of the clamping areas ensures continued use of existing moulds. Furthermore, the daily operational practice is taken into account owing to the modular nature and the option of connecting hydraulic core pulls onto the plastic molds.

Flexibility through modular construction

The concept of electrically driven main axes as the basis and the option of freely combinable electrically or hydraulically driven auxiliary axes integrates the advantages of both systems. 

The machines have sufficient hydraulic power at their disposal precisely where it is needed, and they have the highest level of electro-mechanical accuracy coupled with economic energy consumption wherever feasible for the production task.

This means that the ALLROUNDER A machines also represent extremely flexible production systems, which always allow the machines to be equipped within an optimum cost/benefit framework, while at the same time precisely adapting them to the prevailing production requirements.

Injection Molding Equipment

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Injection molding equipment is equipment that is very important for the operation of injection molding machines. Indeed, all injection molding machines utilize injection molding equipment that includes a power source, injection unit, mold assembly, and clamping unit to perform the four stages of the process cycle.

injection molding equipment
injection molding equipment

One of injection molding equipments is injection unit. This injection molding equipment is responsible for both heating and injecting the material into the mold. The first part of this unit is the hopper, a large container into which the raw plastic is poured. The hopper has an open bottom, which allows the material to feed into the barrel that contains the mechanism for heating and injecting the material into the mold.

Another injection molding equipment is clamping unit. Prior to the injection of the molten plastic into the plastic mold, the two halves of the mold must first be securely closed by the clamping unit. The hydraulically powered clamping motor actuates clamping bars that push the moveable platen towards the stationary platen and exert sufficient force to keep the mold securely closed while the material is injected and subsequently cools. After the required cooling time, the mold is then opened by the clamping motor.

There are also molds, typically made of steel or aluminum, as the plastic injection mould and molding equipment. The mold has many components, but can be split into two halves. Each half is attached inside the injection molding machine and the rear half is allowed to slide so that the mold can be opened and closed along the mould’s parting line. The two main components of the mold are the mold core and the mold cavity.

When this injection molding equipment is closed, the space between the mold core and the mold cavity forms the part cavity that will be filled with molten plastic to create the desired part. Multiple-cavity molds are sometimes used, in which the two mold halves form several identical part cavities.

Mold base also includes injection molding equipment that is a place where the plastic mold core and cavity are each mounted. Then, the mold base is fixed to the platens inside the injection molding machine. The front half of the mold base includes a support plate, to which the mold cavity is attached, the sprue bushing, into which the material will flow from the nozzle, and a locating ring, in order to align the mold base with the nozzle.

The rear half of the mold base includes the ejection system, to which the mold core is attached, and a support plate. When the clamping unit separates the mold halves, the ejector bar actuates the ejection system. Meanwhile, mold channels are one of injection molding equipment types that is usually integrated into the mold design in order for the molten plastic to flow into the mold cavities.

First, the molten plastic enters the mold through the sprue. Additional channels, called runners, carry the molten plastic from the sprue to all of the cavities that must be filled. At the end of each runner, the molten plastic enters the cavity through a gate which directs the flow. The molten plastic that solidifies inside these runners is attached to the part and must be separated after the part has been ejected from the mold.

Besides using several types of injection molding equipment, there are many types of materials that may be used in the injection molding process. Most polymers may be used, including all thermoplastics, some thermosets, and some elastomers. When these materials are used in the Thermoplastic Injection Molding Process, their raw form is usually small pellets or a fine powder. Also, colourants may be added in the process to control the colour of the final part.

Plastic Injection Molding Process

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Plastic injection molding process requires the use of an injection molding machine, raw plastic material, and a plastic mold. In this process, the plastic is melted in the injection molding machine and then injected into the plastic mold, where it cools and solidifies into the final part. Plastic injection molding process is getting popular today.

Plastic injection molding process requires the use of an injection molding machine, raw plastic material, and a mold. In this process, the plastic is melted in the injection molding machine and then injected into the plastic mold, where it cools and solidifies into the final part. Plastic injection molding process is getting popular today. Plastic injection molding process produces thin-walled plastic parts for a wide variety of applications. Injection molding is also used to produce several everyday items such as toothbrushes or small plastic toys. Many medical devices, including valves and syringes, are manufactured using injection molding as well. The following information will describe in greater detail of this plastic injection molding process. The first step of plastic injection molding process is the clamping of the mold. The clamping unit is one of three standard elements of the injection machine. They are the mold, the injection unit, and the clamping unit. The clamp is what really holds the mold while the melted plastic is being injected, the mold is held under pressure while the injected plastic is cooling. Injection molded parts that is used in plastic injection molding process can vary greatly in size and therefore require these measures to cover a very large range. As a result, injection molding machines are designed to each accommodate a small range of this larger spectrum of values. Injection molding machines have many components and are available in different configurations, including a horizontal configuration and a vertical configuration. On the other hand, regardless of their design, all injection molding machines utilize a power source, injection unit, mold assembly, and clamping unit to perform the four stages of the process cycle. Injection molding machines that can be used in plastic injection molding process are typically characterized by the tonnage of the clamp force they provide. The necessary clamp force is determined by the expected area of the parts in the mold and the pressure with which the material is injected. Thus, a larger part will require a larger clamping force. Also, certain materials that require high injection pressures may require higher tonnage machines. The size of the part must also comply with other machine specifications, such as shot capacity, clamp stroke, minimum mold thickness, and platen size. Next step of plastic injection molding process is the real injection of the plastic which is melted. The plastic regularly begins this process as pellets that are put into a large hopper. The pellets are then fed to a cylinder; here they are heated until they become molten plastic that is easily forced into the plastic mold. The plastic stays in the plastic mold, where it is being clamped under pressure until it cools. As with any process, there are advantages and disadvantages associated with plastic injection molding process. The advantages be more important than the disadvantages for most companies; they contain being able to keep up high levels of production, being able to reproduce a high tolerance level in the products being produced, and lower costs for labor as the bulk of the work is done by machine. Plastic injection molding also has the added benefit of lower scrap costs because the mold is so precisely made. However, the disadvantages of this plastic injection molding process can be a deal breaker for minor companies that would like to use plastic injection molding as a way to manufacture parts. These disadvantages are, that they equipment needed is expensive, therefore, increasing operating costs. Related Info to Plastic Injection Molding Process Injection Molding Equipment: Injection molding equipment is equipment that is very important for the operation of injection molding machines. Indeed, all injection molding machines utilize injection molding equipment ...Injection Molding Process: Injection molding process basically is quite simple. The main principle of this type of industrial method is forcing the raw material to be molded in ...Injection Molding Machines: Injection molding machines are quite popular machines used widely in business to produce parts from both thermoplastic and thermosetting plastic materials.  Injection molding machines function
Plastic Injection molding process

Plastic injection molding process produces thin-walled plastic parts for a wide variety of applications. Injection molding is also used to produce several everyday items such as toothbrushes or small plastic toys. Many medical devices, including valves and syringes, are manufactured using injection molding as well. The following information will describe in greater detail of this plastic injection molding process.

The first step of plastic injection molding process is the clamping of the mold. The clamping unit is one of three standard elements of the injection machine. They are the plastic mold, the injection unit, and the clamping unit. The clamp is what really holds the mold while the melted plastic is being injected, the plastic mold is held under pressure while the injected plastic is cooling.

Injection molded parts that are used in plastic injection molding process can vary greatly in size and therefore require these measures to cover a very large range. As a result, injection molding machines are designed to each accommodates a small range of this larger spectrum of values.

Injection molding machines have many components and are available in different configurations, including a horizontal configuration and a vertical configuration. On the other hand, regardless of their design, all injection molding machines utilize a power source, injection unit, mold assembly, and clamping unit to perform the four stages of the process cycle.

Injection molding machines that can be used in plastic injection molding process are typically characterized by the tonnage of the clamp force they provide. The necessary clamp force is determined by the expected area of the parts in the mold and the pressure with which the material is injected.

Thus, a larger part will require a larger clamping force. Also, certain materials that require high injection pressures may require higher tonnage machines. The size of the part must also comply with other machine specifications, such as shot capacity, clamp stroke, minimum mold thickness, and platen size.

Next step of plastic injection molding process is the real injection of the plastic which is melted. The plastic regularly begins this process as pellets that are put into a large hopper. The pellets are then fed to a cylinder; here they are heated until they become molten plastic that is easily forced into the mold. The plastic stays in the mold, where it is being clamped under pressure until it cools.

As with any process, there are advantages and disadvantages associated with plastic injection molding process. The advantages be more important than the disadvantages for most companies; they contain being able to keep up high levels of production, being able to reproduce a high tolerance level in the products being produced, and lower costs for labor as the bulk of the work is done by machine. Injection Molded Plastic Parts also has the added benefit of lower scrap costs because the mold is so precisely made.

However, the disadvantages of this plastic injection molding process can be a deal breaker for minor companies that would like to use plastic injection molding as a way to manufacture parts. These disadvantages are, that they equipment needed is expensive, therefore, increasing operating costs.

Related Info to Plastic Injection Molding Process

  • Injection Molding Equipment: Injection molding equipment is equipment that is very important for the operation of injection molding machines. Indeed, all injection molding machines utilize injection molding equipment …
  • Injection Molding Process: Injection molding process basically is quite simple. The main principle of this type of industrial method is forcing the raw material to be moulded in …
  • Injection Molding Machines: Injection molding machines are quite popular machines used widely in business to produce parts from both thermoplastic and thermosetting plastic materials.  Injection molding machines function

What is Plastic Injection Molding

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Injection molding is a molding procedure whereby a heat-softened plastic material is forced from a cylinder into a relatively cool cavity giving the article the desired shape. Injection molding is a manufacturing technique for making parts from the plastic material. Molten plastic is injected at high pressure into a mold, which is the inverse of the desired shape. The mold is made by a Mold Manufacturer China Company from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. Injection molding is very widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars.

The process of plastic injection molding



An injection molding machine consists of three basic parts, the mold plus the clamping and injection units. The clamping unit is what holds the mold under pressure during the injection and cooling. Basically, it holds the two halves of the injection mold together.

During the injection phase, plastic material, usually in the form of pellets, are loaded into a hopper on top of the injection unit. The pellets feed into the cylinder where they are heated until they reach molten form (think of how a hot glue gun works here). Within the heating cylinder there is a motorized screw that mixes the molten pellets and forces them to end of the cylinder. Once enough material has accumulated in front of the screw, the injection process begins. The molten plastic is inserted into the mold through a sprue, while the screw controls the pressure and speed.

The dwelling phase consists of a pause in the injection process. The molten plastic has been injected into the mold and the pressure is applied to make sure all of the mold cavities are filled.

Then the plastic is allowed to cool to its solid form within the mold. The clamping unit is then opened, which separates the two halves of the mold. An ejecting rod and plate eject the finished piece from the mold.

Extrusion

A machine used to extrude materials is very similar to the injection-moulding machine explained above. A motor turns a thread, which feeds granules of plastic through a heater. The granules melt into a liquid, which is forced through a die, forming a long ‘tube-like’ shape. The extrusion is then cooled and forms a solid shape. The shape of the die determines the shape of the tube.

Advantages of Injection Molding 



– High tolerances are repeatable 

– Wide range of materials can be used 

– Low labour costs

– Minimal scrap losses 

– Little need to finish parts after molding

Plastic Injection molding
Plastic Injection molding

Disadvantages of Injection Molding



– Expensive equipment investment 

– Running costs may be high 

– Parts must be designed with specific molding consideration.

Overview

Injection molding is a relatively new way to manufacture parts. It is a fast process and is used to produce large numbers of identical items from high precision engineering components to disposable consumer goods. Injection molding is often used in mass-production and prototyping. It produces such small products as bottle tops, sinks plugs, children’s toys, containers, model kits, disposable razors and parts of cameras. The process can even mould such large items as dingy hulls and kit car body shell parts.

What to know more about injection molding? Please go to
https://en.wikipedia.org/wiki/Injection_molding to take a look.

Plastic Food Package

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The Safety of Plastic Food Wraps

  • Plastic food Package Containers are used safely by millions of people every day to help protect foods against spoilage and contamination.
  • Some food wraps contain adipates, a kind of plastic softener that allows plastic wrap to cling to bowls to help keep food fresh and safe.
  • One of these adipates, called DEHA, has been the subject of inaccurate media reports recently. These stories ignored decades of safety studies showing that DEHA is safe in food wrap.
  • The U.S Food and Drug Administration, which ensures the safety of food packaging, carefully reviews studies on all substances before allowing their use in food packaging. Based on extensive research, the Food and Drug Administration permits the use of DEHA in packaging for all types of food.
  • Based on U.S. Department of Agriculture figures for average consumption, the exposure to DEHA is below levels of concern. A Consumer’s Union study alleged high exposures, but even assuming that the analysis was accurate, a 150-pound adult would need to eat more than 1,000 pounds of cheese in a single day to reach the observable effect level found in lab animal testing.
  • On its Internet website, Georgetown University’s Center for Food and Nutrition Policy (CFNP) recently wrote, “We at CFNP view the benefits of using plastic wrap to protect food safety and quality on the shelf to far outweigh the imagined risks ….” 

Plastics in the Microwave

Over the years, consumers have come to appreciate the important role plastics play in keeping food safe and healthful. In the home, plastic wraps, storage containers and sealable bags help keep your family safe and your food fresh and free of contamination.

What may be less clear is how appropriate these containers are for use in your microwave oven. Dr. Charles Breder, an expert on food packaging and former supervisory chemist at the U.S. Food and Drug Administration (FDA), offers these guidelines:

  • Cook or reheat foods in containers intended for microwave use. These containers are designed to withstand the high temperatures that are possible when the foods you’re heating contain fat or sugar.
  • Plastic Molding company can make plastic food package box and other type of plastic mold base on customer requirement
  • Remove food from store wrap before thawing or reheating in a microwave oven unless the manufacturer has indicated that it’s meant for microwave use. Some plastic trays, wraps or containers can melt or warp when the food gets hot, possibly causing spills and burns.
  • Most cold-food packages – such as margarine tubs, cottage cheese containers and foam meat trays – are not intended for microwave use.
  • Plastic wraps, placed loosely over bowls or dishes during rewarming, can help keep moisture in and provide even cooking. If the wrap touches the food, the wrap could get overly hot and possibly melt. Yet, as Dr. Breder notes, if you were to accidentally eat food containing melted plastic, you’ll likely have an unpleasant eating experience – but you won’t be harmed.

Plastic Mold Technology

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Plastic mold technology​

Plastic injection mold develops day after day. Each time, on exhibition, we can see that all manufacturers will exhibitor their newest and most advanced mould technology to attract customers. K fair in German is one of the most famous plastic industry exhibitions, there are many famous plastic injection moulds manufacturer will attend the fair and display their newest and most advanced plastic injection moulds. Besides K fair, NPE in America, Italy Milano PLAST, Plastic Magen in Mexico, Brazil last, Canton fair and Chinaplast, they are all world famous plastic injection moulds industry exhibition where can learn a lot of advanced plastic mold technology​.

In recent years, gas assistant molding system and RHCM (Rapid Heat Cycle Molding) are the top two advanced plastic injection moulds technology.

Plastic Mold

plastic mold

The gas assistant molding system

Gas assistant molding is a kind of new technology which brings the high-pressure air into plastic molding parts to let the plastic product with hollow section. Compare to traditional plastic molds​, it can reduce the weight of the product; realize thick wall and thin wall at the same time. The product surface will be more beautiful than traditional mould, without shrink mark, deformation and other molding defects. This kind of molding technology is more and more widely used in commodity products plastic injection moulds, household appliances product plastic injection moulds.

ST after some years’ research and development, it succeeds on gas assistance molding technology on various kinds product, such as for plastic chair, plastic handle and so on. Below is the picture of our design of a gas assistant chair for your reference.

Besides, injection machine and plastic injection mould, gas assistance equipment including Nitrogen Generator, pressure controller unit and air inlet parts.

RHCM (Rapid Heat Cycle Molding)

It is a kind of high speed and high-temperature molding technology. Put some Glass Fiber into plastic raw material to get the plastic product with high hardness and reflective surface. RHCM can remove the molding defects like melt line and flow mark which will appear in traditional plastic molding.

RHCM use high steam to make the mould cavity surface to reach the plastic raw material distortion temperature. Mould with high temperature ensures the good flow of plastic raw material; it makes the material fast flow and filled. It can avoid material to become more solid. This kind technology realizes no cooling molding and product with high glossy appearance without molding defects like deformation, melt line, flow mark, silver line. This kind of mould with short cycle time, reduce around 70% compared to traditional molding.

Plastic molds

plastic molds

RHCM mould have its advantage, it also have some disadvantages

  •  Mould steel will be easy crack
  •  Oil stain – As the mould temperature will be exceeding 130 ℃
  •  Gate area will appear white mark

Even though, RHCM technology is not widely used on market, but it will be a main technology in future as more and more customer require for high quality product, especially for outer parts. Nowadays, RHCM mould is mainly used in outer part product, like TV case and some automotive parts.​

If you want to know more information about plastic mold​​ and plastic mold technology, welcome to go to our mold blog http://mold.world.edu/, there are lots of plastic mold information to help you

Plastic Injectioin Molds

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The field of the industry has become very advanced and each time we can observe some new inventions over there. In this wide field of industry, we have to use various necessary technologies. You may have seen various products are made of plastic or rubber. Is this not a surprising thing to notice how these plastic products are made? Yes, this is surprising as well as interesting too. As the technology for producing such plastic products is used is known as injecting pr prototype molding. There are lots of expert and advanced service providers which have a team of professionals who look after the matter of Injection molding molds

Another important tool of molding is prototype mold. In this advanced technology, some host material is injected to produce such plastic products. The prototype mold is made of 7075 T6 aluminum. You must be interested to know what for these molds are built. These are mainly made for producing tooling frames. The components for molds are fitted into the frame and thereafter the frame is positioned on the machine. This technique is quite different and easy than that of regular mold. In this technique, the experts never use spruce plates. Also in regular molds we often can see the use of clamping plates but in this prototype molding technique, we can never see the use of such plates.plastic injection molds

There are different types of companies which have noticeable stock of equipment of prototype mold makers. One can easily place an order for the required item and these expert teams will select the accurate item from the huge stock. If you are interested regarding how to get in touch with such companies then you just need to go through the website of these companies to have knowledge about the details. So, do not waste your time more and get in touch with the expert today itself.

If you are willing to understand the processes which are followed in these companies dealing in Plastic mold business then, in that case, you can search on the web to get better ideas in this regard. In the other way round you can meet the experts of any reputed company in this field to understand the process and once you are satisfied with it then you can decide on the point whether to hire the services of the company or to find a new one for this task.

China Injection Molding Company

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The molding industry is growing from strength to strength thanks to the high-tech modern machines. These days, machines of extremely superior quality are being made which can provide a comprehensive solution to all your plastic molds and plastic molding needs. There are a number of top-notch companies engaged in the manufacture and supply of molding machines. You are advised to make your purchase through the internet. Internet is not just the safest place for any kind of molding purchase but is also the best place to look up for machines and plastic molding products.

HYX is an Injection Molding China Company that has carved out a cult status when it comes to producing plastic mold and molding products. The organization enjoys a clear advantage in the manufacture of machines that are superior in quality and low on prices. These machines are perfect for Chinese injection molding and will easily fit into your budget. The vehicle industry to relies a lot on these machines for automotive parts molding.

Some of the noteworthy features of these machines and molding services are discussed below:Chinese injection molding

  1. Durable: These machines, being of superior quality, are durable and enjoy longevity. That is to say, they can easily run for a number of years and do not get depreciated easily. Also, they have a long life which makes them long-term assets. Investing in these machines will certainly reap large dividends.
  2. Performance: These machines also score a point when it comes to performance. They are perfect for China Plastic Injection Molding Company and have a reputation for producing a number of units in a very short span of time. You can trust these machines to deliver the products very quickly and in a cost-effective manner.
  3. Energy efficient: These machines are energy efficient i.e. they save a lot of energy. Their power consumption is lower than that of sub-standard machines and therefore will give you financial advantage both in the short run as well as in the long run.
  4. Automotive molding: These machines are also used for automotive parts molding. Furthermore, these machines find use in a number of other industries including medical and toy industry.
  5. Less noisy: Another noteworthy feature of these machines is that they are less noisy. Unlike most machines which produce a lot of noise while running, the machines manufactured by HYX tend to produce less noise thereby allowing you to work in peace. HYX being a top China injection molding Company takes painstaking efforts to ensure that the machines are made using the latest technology and are hence less noisy.
  6. Speed: These machines also enjoy great speed. Compared to sub-standard machines, the machines by HYX last long and run efficiently yielding high performance.

Thanks to these machines, the Chinese injection molding industry is booming. They are used for the manufacture of anything from game pieces to surgical equipment. They are also used for automotive parts molding. For any type of molding product or service, HYX, the number one plastic China injection molding Company, in making plastic mold and plastic molding parts, we will be your best bet.

Plastic Mold Making

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Plastic Mold Making

To achieve the desired mold productivity, many elements of plastic mold making and design must be intelligently incorporated. The basics of design for plastic mold making must be the starting point and then added to that, decisions made about a whole host of different design options must be made to work in concert with the basics to come up with an optimized mold design.Plastic Mold

Everyone is interested in having the lowest cost tool, but in plastic mold making, other considerations must also be included. Among these is the mould’s ability to be readily maintained, and kept in optimum condition throughout the mould’s useful life. A very low initial cost tool may prove to have a larger overall cost of operation; if for instance, lengthy maintenance procedures are required to keep the tool in operational condition throughout its life.

There are two general types of cavity and core inserts that should be considered when plastic mould making: Integrated and Nested or Split Structure. Each has its advantages and disadvantages, so the decision about which to choose when plastic mold making depends on the application and the required useful life of the mold.

Plastic Mold China is speeding to the world today, to make your business more successful, find a China mold company is more important.

Integrated Cavity

The integrated cavity is cut directly into the mold base plates. It requires the fewest number of parts and is the simplest to produce, so often (though not always) this is the least expensive to produce in terms of initial investment. However, as stated, this is not always the least expensive alternative when considering the cost of the tool over the life of the part.

Some of the Advantages of Integrated Cavity Mold Making include:

• More practical for large or odd-shaped parts, such as automotive body panels and similarly shaped parts.

• Least amount of machining – so lower initial cost.

• Least amount of mold materials used – so lower materials cost.

Conversely, some of the Disadvantages of Integrated Cavity Mold Making include:

• Requires larger, more expensive machines to make the molds, and no components may be made in parallel, so they often have a longer lead time to produce.

• Most costly, difficult and longer lead time to modify in the event revisions are required.

• Costly and difficult to repair with longer down times when the mold wears or is damaged during its useful life.

Nested Cavity

When making a nested cavity plastic mold, cutouts are made in the mold base to receive nested parts that form the mold cavities that produce the finished parts. While this has more components than the Integrated Cavity type, often the advantages of plastic mold making using this method far outweigh the disadvantages.Plastic molds

Advantages to using Nested Cavity plastic molds making:

Complex geometries may be more easily formed when using nested cavities, for example, multi-pin electrical connectors are nearly always made with nested cavity tools.

Improved materials may be more easily incorporated into nested cavity molds for reduced wear and improved mold temperature control ability.

Damaged or worn components can be quickly and inexpensively replaced to minimize downtime.

Some of the disadvantages of using Nested Cavity plastic mold making include:

• Higher initial material costs

• More machining required in some cases, as both the mold base and the cavities require precision manufacture. (However, most of the machining may be performed on smaller, faster and less expensive machines.)

Consult with your mold maker to decide which of these two different plastic mold making philosophies are most suitable for your specific application. if you want to know more about us please got to our home page to know more about us

Precision Injection Mold Making

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Precision Measurement And Injection Mold Making

It is remarkable that it is possible to open a package from Sweden, clean up EDM tool, and install it in an engine lathe spindle made in upstate New York, and indicate the run-out with a dial indicator made in Switzerland, held by a magnetic base made in Japan. This is amazing in itself, but the truly amazing thing is that it all works, quite well!

In this example, which actually happened to me, the run-out was less than .0001in/.0025 mm, right out of the box, first try. This is what precision tool measurement is all about.

The number of precision tools used by an injection mold maker are numerous. A partial list would include:

Precision measurement tools

  • Granite surface plate
  • Surface gage
  • Dial indicator
  • Height master/Cadillac gage
  • Gage blocks
  • Pin gages
  • Sine plate
  • Magnetic squaring block
  • Vee-block
  • Precision micrometers
  • Spin fixture

One of the more challenging aspects of building a mold is to have all of the various measuring tools calibrated to the same standard. This is why the EDM chuck from Sweden fit in the American lathe spindle: the accuracy was traceable to a common standard.

It doesn’t mean much if you are accurate within .0002 in., if your micrometer is off! It just won’t work. Shops need to have a master set of gage blocks that are traceable to the NIST, or National Institute of Standards and Technology. This is not as hard as it sounds, you just need to invest in a good set of gage blocks, not some made by child labor in a developing nation.

The proper care and use of these expensive tools is critical as well. They need to be treated with respect, handled carefully, kept free from rust and grinding grit. They need to have a clean storage place, with a grit-free surface on which to sit.

There are many places that you can cut costs in Plastic mold making, precision measurement tools is not one of them. It simply makes no sense to save money by buying a cheap dial indicator, for example. It is only going to haunt you in the long run. The same holds true for gage blocks, micrometers, squaring blocks, sine plates and so on.

With large items, such as the optical comparator or coordinate measuring machine, it is especially important to obtain a reliable tool. Valuable shop time can be quickly consumed with trouble-shooting a low quality machine. Not only that, but what if the measurements are unreliable? The mistakes can become extremely expensive and will quickly erase the initial savings.

Reliable precision measurement manufacturers

 Starrett Brown-and Sharpe Interapid Girod
 Etalon Mitutoyo Suburban Mahr
 Tesa Hermann Schmidt OGP Magnets
 Harig Micro-Vu Mitutoyo Zeiss