The Utilization of Vertical Injection Molding Machines

When it comes to making items that combine light weight, durability, and pleasing shape, look and feel, there’s nothing that quite matches modern plastics. And this is especially true of hand-held items, such as small electronic appliances, where providing ergonomic shape and a grippy, easy-to-hold surface are particularly important.

 

Whether they’re GPS receivers, medical devices, toys, or even kitchen utensils, the best way to produce such items is through the process of over molding. It involves the molding of two different plastics, one on top of, or around, the other, so as to produce what amounts to a single, unified structure that’s strong on the inside yet flexible, colorful, and easy to hold on the outside.

 

Benefits of over molded plastics devices include:

 

  • More Resistant To Shock
  • More Resistant To Water
  • More Resistant To Dust And Vapor
  • More Resistant To Vibration
  • Make Devices More Comfortable To Use
  • Make Devices Just Plain Prettier

 

By now, over molding is a standard process in the injection molding industry, but some methods of executing the process is superior to others. The challenge is to make sure the two pieces, rigid substrate and outer elastomer, to fit together just so, with no gaps, no slack, no possibility of slippage and with no chance of one part pulling on and distorting the shape or integrity of the other. Getting these two molded parts to match up just right takes a good deal of skill and experience. No adhesives can be used, and there should be no manual assembly steps involved, either – it’s mainly a matter of making molds that create a perfect fit and then performing the actual molding process with extreme precision.

 

And it’s here that the right machinery also helps a great deal. Indeed, the best way to produce over-molded parts is with a vertical injection molding machine. It relies on the gentle force of gravity to clamp the inner and outer parts together.

 

That’s different from a horizontal injection molding machine, which relies on mechanical clamping, a method that requires more time and effort and raises the risk of improper fit: Gravity’s pull is always there, always trying to dislocate parts in a horizontal mold. The vertical mold simply takes advantage of gravity instead of trying to fight it.

 

Vertical injection molding equipment is designed with open clamps and rotary tables, which gives them the advantage of being able to work with multiple molds and simultaneous operations such as pre-molding, injection-, and post-molding. The result: less need for manual intervention, greater efficiency, greater productivity, and less cost. What’s more, vertical molding machines often save significant space on the factory floor.

 

In short, vertical injection molding is the method of choice when it comes to producing high-strength, high-touch parts for the electronics, medical, military, and similarly demanding industries.

 

More information about vertical injection molding machine, try to visit the website of Multiplas Enginery Co., Ltd... Multiplas is a leading industrial solutions provider that offers versatile moulding solutions, innovative design and manufactures for the production systems, and provides comprehensive technical support services to the customers committed in 3C electronics, electrical, automotive, medical / optical, and other technical moulding sectors. If you have any interest, please feel free to send inquiry or contact them directly.

 

 

Article Source: http://info.crescentind.com/blog/bid/40004/Over-molding-and-the-utilization-of-vertical-vertical-injection-molding-machines

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Plastic Injection Molding and Its Advantages

Product identification plays an extremely important role in communicating a product’s position and brand in the marketplace. Plastic nameplates can convey messages, brand, classifications, description, schematics, warnings, instructions and many other types of product information.

 

Plastic injection molded nameplates help to identify your products and help them stand out in the crowd. Before we go further, let’s take a quick look at the plastic injection molding process.

 

The Plastic Injection Molding Process

 

The plastic injection molding process is not a complicated one. Molding processes of this sort involving metals go back many years, and basic principles have not changed, just the methods and materials.

 

Of course, you have seen what the finished product looks are. You’ve seen them more times than you may be aware of. You’ve seen them as car emblems, appliance and industrial nameplates, custom plastic nameplates, recreational product nameplates, point-of-purchase, plaques and signs. They fill the world around you, but do you know how are they made?

 

The process begins with a plastic pellet made of a composite of organic and inorganic polymers, plus additives to aid in the melting process. This small pellet is tossed into a hopper with thousands of other pellets. This begins the journey from pellet to product. The next step is preparing the plastic.

 

The pellets are released onto the threads of a giant rotating screw. As the pellets travel along, they are heated to melting temperatures, somewhere around 400 degrees Fahrenheit. Of course, the higher quality the plastic is the higher temperature it takes to melt it. The pellets are rolled along the screw because the process also requires friction and force. The screw provides both as the pellets roll along its surface and crash into each other.

 

Now that all three requirements are met, friction, force and heat, the pellets begin to liquefy and the next step of filling begins. The screw continues to guide the liquid plastic along its threads to a valve. Under high pressure the valve forces the plastic into a custom designed mold – made of heat resistant metals – until every cavity is filled. Once this is achieved the mold goes into the holding phase. The filling and holding phases are crucial steps in the plastic injection molding process. Their execution will determine the quality of the finished product. The metals we use for the mold insure that the last piece made carries the same qualities as the first.

 

The Next Step

 

The pressure on the mold is maintained while the molten plastic cools to a solid state. This stage could take a few minutes as the mold absorbs the heat from the melted plastic, and in turn is cooled by coolant that encircles it. While the part is cooling, the screw returns to its original position, collecting more pellets from the hopper. The product is then ejected from the mold and moves to its secondary processes such as decoration, sub assembly, or shipment. The mold closes, and the process begins all over again.

 

Advantages of the Plastic Injection Molding

 

There are several important advantages of utilizing injection-molded plastic:

 

  1. The plastic injection molding allows complex and intricate shapes to be manufactured. Shapes that would be too difficult or costly to manufacture with different processes.
  2. The plastic injection molding allows for a high volume of plastic nameplates and custom plastic signs to be manufactured at the same time with the same mold and quality.
  3. The metal molds have a long life. When you come back for a future order, the mold will be ready and your next order will be identical to your first. In addition, their initial cost is low too.
  4. The plastic nameplates can be decorated in a variety of ways such as textures in the mold, metallic foil, ink, UV protection, and more.

 

Other Advantages

 

Plastic Injection Molding allows manufacturers to produce custom plastic nameplates and components that would be too costly to make as intricately as required, by utilizing traditional machining methods. Injection-molded plastics also saves you time and money by allowing high numbers of pieces of the component to be made at the same time, with each copy identical to the one before it. This process also reduces labor costs by minimizing the need for manual labor from employees. Finally, there is virtually no wasted material. Any unused or left over plastic can be re-cycled to be reused in the process

 

Shin Fang Plastic Industrial Co., Ltd. was founded in 1974, mainly produced handbag hardware accessories in the early stages. In 1994, the company increased plastic material injection production line. Since it offers stable quality, complete patterns, it obtains great approval from the industry. We offer the customized OEM/ODM service and material selection to satisfy the best quality, minimum cost, and quick response requirement.

 

Our product line includes cart system, side wheel, side release buckle, hook, loop, ring, ladder lock, cam buckle, slide, cord lock, stud, washer, eyelet, shoulder pad, foot stand, pad, strip, handle, bottom case, two colors molding product, diving case, utility box, and tackle box whose are made of a wide plastic material of POM, NYLON, PP, ABS, PVC, HYTREAL, TPR, and others. If you need more details about Shin Fang’s plastic injection molding or plastic injection products, welcome to contact us for more information!

 

 

Article Source: http://EzineArticles.com/8316494

 

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Experienced and skilled Mold design & Mold maker – Spro Tech

Introduction of Spro Tech

Spro Tech is a leading mold manufacturer whose business is based in two distinguished divisions – single shot plastic injection moulding and plastic parts, double shot injection molding and plastic parts , it is a unique model of success in the China/Taiwan industry for automotive components.Since 1994, with the foundation of Spro Tech has had an exponential growth; firstly on the mould manufacturing for the injection of thermoplastics and afterwards by creating their own industrial units for the injection of thermoplastics, as well as on the development of competences and technical and technological capacity for the pursuit of high level projects of investigation and development.

As a professional plastic mold manufacturer, we have skilled technicians and fine machineries, including CNC Milling Machines and NC Electric Discharging Machines. Our rich experience can provide you with molding suggestions that are fully cost-effective and efficiency-concerned, manufacturing high quality molds that are precisely to the design requirements. Customized modification is provided to meet the production requirement for high quality and efficiency products.

Spro Tech is a famous plastic injection mold manufacturer and designer. Spro Tech’s plastic injection molding products are with very competitive price and best quality to their customer. Spro Tech’s aim is to develop plastic injection mold products that offer a core advantage over that of traditional molding products for their customers and strategic partners. Right injection mold making at competitive prices backed by prompt customer services, is why so many customers choose Spro Tech.

Spro Tech has systematically established the comprehensive mold component database to accelerate the design process, and utilized proper design software on 2D and 3D designs. Spro Tech can load the file through a complex transformation process even with abnormality on the geographical figures, and quickly design mold cavity, core and sliding block cutting. Spro Tech can establish design modules which make the manufacturing process easier. Spro Tech also can perform input/output proficiently on almost every CAD application software.

 

==Molding For Auto Part==
Water Tank - BS4 Housing
Auto Manifold
Water Tank - W408 Cover

==Molding For Electronic & Computer==
Computer Panel
Computer Series
Panel R/L

==Molding For Consumer Electronic==
Electronic Parts
Consumer Parts
Consumer Parts

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