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Shot Capacity : The maximum weight of molten resin that the injection molding machine can push out with one forward stroke of the screw during injection molding operation.
Shot weight : The weight of the material injected into the mold in a single shot by an injection molding machine. (Weight of the molded part(s) + Weight of the runner + gate and the sprue)
What else can I help you with?
What is injection molding?
Injection molding is a commonly used manufacturing process for the fabrication of plastic parts. the injection molding process need injection mold and injection machine.--------------------------------------------------------Injection molding is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the mold cavity.After a product is designed, usually by an industrial designer or an engineer, molds are made by a moldmaker (or toolmaker) from metal, usually either steel or aluminium, and precision-machined to form the features of the desired part. Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars.the following is a photo of the injection molding process:http://www.vulcanmold.com/article/Plastic-Injection-molding-process.htmlA Hollow mould is made from steel in several parts. when the mould is all together the hollow within it is the same shape as the object you wish to produce. The mould is water cooled to keep its temperature under control. molten plastic is forced into the mold at high pressure. it is left to cool for a specified period of time, then the mold is pulled apart in such a way that the object falls out of the mould and the whole thing starts all over.
What Types of ejection systems are used in injection molding?
sleeve ejection,blade ejection,srriper plate ejection,pin ejection,valve ejection
What are the Main parameters that affect the injection molding process?
Following parameters affect injection moulding process. 1) nature of material (type of plastic) 2) rate of injection 3) size of the component being moulded 4) efficiency of machine 5) type of cooling method adopted 6) curing time in the mould
What is the difference between injection molding and transfer molding?
The difference is within the machine and processThe presses used for injection molding are horizontally operated with a unique material delivery system. The thermoset compound is fed and injected with a high speed reciprocating screw, or a plunger system that reduces glass degradation for better part strength. The major advantages of injection molding:Better for small to medium part sizes (0.1 lbs to 6 lbs) in high volume.Tight tolerances can be achieved with these low-shrink materials. Post curing is not needed.Consistent material delivery into the mold cavities.Good strength for small parts, especially when molded with Thick Molding Compound (TMC).The presses used for transfer molding are vertically operated and equipped with a hydraulic transfer system and controls. The thermoset compound is loaded into a chamber known as the transfer pot. The mold is then closed and a transfer plunger forces the compound from the pot through the runner system and gates into the mold cavities. The major advantages of transfer molding:Better for small to medium part sizes in medium to high volume.Good for molding in complex metallic inserts into the part (encapsulation).Tight tolerances can be achieved with these low-shrink materials. Post curing is not needed.Consistent material delivery into the mold cavities.
How do you calculate shot capacity for plastic injection molding?
Production rate of injection molding machine depends upon cycle time (total time that machine takes to produce a product in one cycle) and the number of cavities. For calculating cycle time, you must consider time for each phase that machine takes in one cycle. That phases are: Mold closing / clamp Filling Pack and hold Cooling and Recovery (40-60% ) Mold Open Ejection Add time taken by each phase. For example, this time is 15 seconds and the number of cavities are 2. So the production rate is 2 finished product per 15 seconds. You can increase your production by decreasing the cycle time. You can decrease cycle time by following some points: Keep wall thickness to minimum required for your product Ensure your machine is fine-tuned Ensure proper cooling system, injection pressure and injection speed is applied.
What has the author Joseph B Dym written?
Joseph B. Dym has written: 'Injection molds and molding' -- subject(s): Injection molding of plastics, Molding, Plastics 'Product design with plastics' -- subject(s): Industrial Design, Plastics
Injection molding courses in Toronto?
Humber College used to teach about injection molding and plastics industry. It was a really great program for someone who wants to be in this field. I don't think any other college or university teach about plastics injection molding anymore. I wish Humber can start teaching about injection molding again in future.
What has the author R G W Pye written?
R. G. W. Pye has written: 'Injection mould design' -- subject(s): Injection molding of plastics, Molding, Plastics
What is meant by moulding of Plastics?
The means of making the shape Ie injection molding, blow molding, etc
What has the author John P Beaumont written?
John P. Beaumont has written: 'Successful injection molding' -- subject(s): Injection molding of plastics
What has the author Jack A Avery written?
Jack A. Avery has written: 'Injection molding alternatives' -- subject(s): Plastics, Molding
What has the author Herbert Rees written?
Herbert Rees has written: 'Understanding product design for injection molding' -- subject(s): Injection molding of plastics 'Rules of printed English' -- subject(s): Rhetoric, Printing, English language, Style manuals 'Mold engineering' -- subject(s): Plastics, Molds, Molding
What has the author James Stewart Walker written?
James Stewart Walker has written: 'Injection moulding of plastics' -- subject(s): Molding, Plastics
What machnes do you used to make plastics?
Plastic is processed using different techniques like extrusion,blow molding,film blowing,sheet thermoforming,transfer molding,contact molding,compression molding,injection molding etc.
How do you calculate machine capacity?
how to calculate injection molding m/c capacity
What has the author P S Cracknell written?
P. S. Cracknell has written: 'Handbook of thermoplastics injection mould design' -- subject(s): Injection molding of plastics
Can you injection mold therosetting plastics?
Yes, both thermoset and thermoplastic plastic be injection moulded. But different injection molding machine is needed. The technology for injection molding of thermoset is developed well now. We have rich experience in making thermoset mould, such as bakelite. if you need more information, you can contact sinomould-13@hotmail.com
