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The manufacture of injection molds can be roughly divided into five steps?
by：CSSSLD
2021-01-23
Injection mold manufacturing can be roughly divided into the following steps:
a technology analysis, plastic products.
before the mold design, the designer should be fully analysis to study the plastic products is in line with the principle of injection molding processing, need consultation with the designer carefully products, have reached a consensus. Including geometry shape and dimension precision of products and cosmetic requirements, discuss the necessary, to avoid unnecessary multifarious in mould manufacturing.
2, the mould structure design.
a set of high quality mould, not only need good processing equipment and skilled mold manufacturing workers, another important factor is to have a good mold design, especially for complex mold, mold design quality accounts for more than 80% of the mould quality. An excellent mold design is: on the premise of meet the requirements of the guests, make the processing cost is low, the processing difficulty is small, short processing time.
to do this, not only to fully digest the guest's requirements, but also on the injection molding machine, mold structure, machining process and mold factory's own ability and so on. Therefore, to improve the level of mold design, should do the following:
1. Understand each to the details in the mould design, understand the use of each part in mould.
2. When the design reference for similar design before, more and understand when it mould processing and product manufacturing, absorb the experience and lessons.
3. Know more about the working process of the injection molding machine, in order to deepen the relationship between the mold and injection molding machine.
4. The factory for processed products process, know the characteristics and limitations of each process.
5. Understanding of their own design mold, test results and to learn from them.
6. As far as possible in the design of the die structure more successful before.
7. More understand the mould into the water to the impact of the products.
8. Study of some special die structure, understand the latest mould technology.
3, determine the mould material and selection of standard parts.
in the mold material selection of, in addition to want to consider the accuracy and quality of products, but also combines the actual conditions of mold factory processing and heat treatment capacity to give the right choice. In addition, in order to shorten the manufacturing cycle, as far as possible use of the existing standard parts.
4, parts processing, mold and assembly.
the precision of the mould in addition to the design gives the best structure and reasonable tolerance matching, parts processing, mold and assembly is crucial. Therefore, the choice of the machining precision and machining method occupies a dominant position in the mould manufacturing.
the size error of molding products mainly consists of the following several parts:
1, mold manufacturing error of about a third of the
2, mould wear caused by the error of about 1/6
3, von berg systeme error resulting from uneven contraction of about a third
4, due to inconsistent with the actual contraction generated the error is about 1/6 of the
total error = ( 1) + ( 2) + ( 3) + ( 4)
so, to reduce mold manufacturing error, should first improve the machining accuracy, with the use of CNC machine tools, this problem has got a good control. In addition, in order to prevent mould wear and deformation caused by the error, in the processing of the products and the high accuracy output larger mould, the cavity and core key parts such as quenching treatment should be adopted. In large mold, in order to save material and facilitate the processing and heat treatment, the mold design should try to use spells inlays structure.
in order to solve the von berg systeme uneven contraction and the scheduled and actual contraction inconsistent error, generated by 1/3 of the products is generally selected in mould manufacturing tolerances, as mould manufacturing tolerance, its purpose is to give after forming process have larger room for adjustment, in order to solve the error caused by the molding process.
5, test.
a mold from design to assembly, simply complete all of its manufacturing process of 70% ~ 80%. Prior to inconsistent with the actual contraction produced by the error of stripping smoothly or not, how the cooling effect, especially the size of the gate, the influence of the location, shape, precision and appearance of products, have to pass a test to verify. Therefore, the test is whether the test mould qualified and choose the best molding process of an indispensable step.
a technology analysis, plastic products.
before the mold design, the designer should be fully analysis to study the plastic products is in line with the principle of injection molding processing, need consultation with the designer carefully products, have reached a consensus. Including geometry shape and dimension precision of products and cosmetic requirements, discuss the necessary, to avoid unnecessary multifarious in mould manufacturing.
2, the mould structure design.
a set of high quality mould, not only need good processing equipment and skilled mold manufacturing workers, another important factor is to have a good mold design, especially for complex mold, mold design quality accounts for more than 80% of the mould quality. An excellent mold design is: on the premise of meet the requirements of the guests, make the processing cost is low, the processing difficulty is small, short processing time.
to do this, not only to fully digest the guest's requirements, but also on the injection molding machine, mold structure, machining process and mold factory's own ability and so on. Therefore, to improve the level of mold design, should do the following:
1. Understand each to the details in the mould design, understand the use of each part in mould.
2. When the design reference for similar design before, more and understand when it mould processing and product manufacturing, absorb the experience and lessons.
3. Know more about the working process of the injection molding machine, in order to deepen the relationship between the mold and injection molding machine.
4. The factory for processed products process, know the characteristics and limitations of each process.
5. Understanding of their own design mold, test results and to learn from them.
6. As far as possible in the design of the die structure more successful before.
7. More understand the mould into the water to the impact of the products.
8. Study of some special die structure, understand the latest mould technology.
3, determine the mould material and selection of standard parts.
in the mold material selection of, in addition to want to consider the accuracy and quality of products, but also combines the actual conditions of mold factory processing and heat treatment capacity to give the right choice. In addition, in order to shorten the manufacturing cycle, as far as possible use of the existing standard parts.
4, parts processing, mold and assembly.
the precision of the mould in addition to the design gives the best structure and reasonable tolerance matching, parts processing, mold and assembly is crucial. Therefore, the choice of the machining precision and machining method occupies a dominant position in the mould manufacturing.
the size error of molding products mainly consists of the following several parts:
1, mold manufacturing error of about a third of the
2, mould wear caused by the error of about 1/6
3, von berg systeme error resulting from uneven contraction of about a third
4, due to inconsistent with the actual contraction generated the error is about 1/6 of the
total error = ( 1) + ( 2) + ( 3) + ( 4)
so, to reduce mold manufacturing error, should first improve the machining accuracy, with the use of CNC machine tools, this problem has got a good control. In addition, in order to prevent mould wear and deformation caused by the error, in the processing of the products and the high accuracy output larger mould, the cavity and core key parts such as quenching treatment should be adopted. In large mold, in order to save material and facilitate the processing and heat treatment, the mold design should try to use spells inlays structure.
in order to solve the von berg systeme uneven contraction and the scheduled and actual contraction inconsistent error, generated by 1/3 of the products is generally selected in mould manufacturing tolerances, as mould manufacturing tolerance, its purpose is to give after forming process have larger room for adjustment, in order to solve the error caused by the molding process.
5, test.
a mold from design to assembly, simply complete all of its manufacturing process of 70% ~ 80%. Prior to inconsistent with the actual contraction produced by the error of stripping smoothly or not, how the cooling effect, especially the size of the gate, the influence of the location, shape, precision and appearance of products, have to pass a test to verify. Therefore, the test is whether the test mould qualified and choose the best molding process of an indispensable step.
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