Practical tutorial for injection mold design. For example, the weight of the product is not large, but the projection surface is large. Then consider the number of molds. Look at the book step by step. In the case of the special case, the formwork is smaller.. This will result in large injection cost and reduced profit for the manufacturer. Injection Mold Design. Analyze the material port, first select the feed side. The product is on the mold. These are necessary.Plastic mold structure analysis
To analyze the structure of plastic molds, we must first understand whether the products have the conditions for mold opening, whether there are drafting, excessive wall thickness, shrinkage deformation, undercut and other factors affecting the mold, and understand the shrinkage rate and fluidity of the product materials. Guangzhou: South China University of Technology Press, ’Plastic Mold Technical Manual’ Editorial Board, Plastic Mold Technical Manual. Beijing: Mechanical Industry Press. After the front and rear molds are determined, the position of the parting surface of the product is determined. Beijing: Beijing Institute of Technology. (I think: first choose the mold material according to the quantity of the product. Zhang Wei Including. However, the curriculum design is not preform mould https://www.pet-mould.com/product/preform-mould/ too complicated, and all the steps are all right. But I don’t know what your plastic parts look like. The position of the runner, the runner gate, the position of the jack, the position of the cooling water, the size of the front and rear molds, and finally the size of the mold base. . I have set up to do plastic mold design, recommend a few books for you, certainly useful: Wang Shuxun, Zhu Yalin, Mei Wei, Long Guoliang. In addition, we must design the core, the launch mechanism or something. Beijing: Chemical Industry Press 3. Concise Plastic Mold Design Handbook.
After the position of the mold gate and the runner, and the relevant information about the product structure and materials, the next step is to determine the front and back molds of the product. If the plastic parts are very simple, just design them just fine.) Supplement: There are mainly the choice of parting surface, the choice of gate location, etc. Then consider the cooling water position, the position of the top rod, the position of the fixing screw, the position of the reset rod Finally, the size of the formwork and the thickness of the formwork are determined. Qi Weidong
To analyze the structure of plastic molds, we must first understand whether the products have the conditions for mold opening, whether there are drafting, excessive wall thickness, shrinkage deformation, undercut and other factors affecting the mold, and understand the shrinkage rate and fluidity of the product materials. Guangzhou: South China University of Technology Press, ’Plastic Mold Technical Manual’ Editorial Board, Plastic Mold Technical Manual. Beijing: Mechanical Industry Press. After the front and rear molds are determined, the position of the parting surface of the product is determined. Beijing: Beijing Institute of Technology. (I think: first choose the mold material according to the quantity of the product. Zhang Wei Including. However, the curriculum design is not preform mould https://www.pet-mould.com/product/preform-mould/ too complicated, and all the steps are all right. But I don’t know what your plastic parts look like. The position of the runner, the runner gate, the position of the jack, the position of the cooling water, the size of the front and rear molds, and finally the size of the mold base. . I have set up to do plastic mold design, recommend a few books for you, certainly useful: Wang Shuxun, Zhu Yalin, Mei Wei, Long Guoliang. In addition, we must design the core, the launch mechanism or something. Beijing: Chemical Industry Press 3. Concise Plastic Mold Design Handbook.
After the position of the mold gate and the runner, and the relevant information about the product structure and materials, the next step is to determine the front and back molds of the product. If the plastic parts are very simple, just design them just fine.) Supplement: There are mainly the choice of parting surface, the choice of gate location, etc. Then consider the cooling water position, the position of the top rod, the position of the fixing screw, the position of the reset rod Finally, the size of the formwork and the thickness of the formwork are determined. Qi Weidong
The designer must solve the problem, otherwise it will affect the mold. The mouth should be balanced; (2) choose the correct gate shape and position, depending on the shape of the mold. When the precision mold is formed, the shrinkage change rate is required to be small, and the expected shrinkage rate and the actual shrinkage rate are as much as possible, but in the actual process, it is generally difficult to do, and the mold is usually corrected after the test. 2..
The key is to ensure that the actual die size is within the dimensional tolerances required by the drawings. In order to better correct the mold, when designing the size of the concave part of the plastic mold, the shrinkage rate should be as small as possible, and the size of the convex part should be taken as the maximum value.How to prevent deformation of plastic mold(1) Mold size accuracy Plastic mould https://www.pet-mould.com Mold size accuracy should be appropriate, the mold design, fabrication and molding process should be considered according to the drawings. Therefore, the preventive measures we can take are as follows: (1) The number of gates should be appropriate.
Prevent demoulding from deformation If the shrinkage of the material is relatively small, it should be noted that when the molding pressure is high, the plastic part is likely to remain in the cavity. In addition, the mold is designed to be demolded without deformation of the plastic part to prevent deformation. 3. The main cause is shrinkage unevenness and internal stress in the mold
The key is to ensure that the actual die size is within the dimensional tolerances required by the drawings. In order to better correct the mold, when designing the size of the concave part of the plastic mold, the shrinkage rate should be as small as possible, and the size of the convex part should be taken as the maximum value.How to prevent deformation of plastic mold(1) Mold size accuracy Plastic mould https://www.pet-mould.com Mold size accuracy should be appropriate, the mold design, fabrication and molding process should be considered according to the drawings. Therefore, the preventive measures we can take are as follows: (1) The number of gates should be appropriate.
Prevent demoulding from deformation If the shrinkage of the material is relatively small, it should be noted that when the molding pressure is high, the plastic part is likely to remain in the cavity. In addition, the mold is designed to be demolded without deformation of the plastic part to prevent deformation. 3. The main cause is shrinkage unevenness and internal stress in the mold
The part number, name, production quantity, part internal system or outsourced part drawing on the part drawing is The standard parts are still non-standard parts, the parts are processed with precision, the correction processing and the margin of the high-precision dimensions of the molded plastic parts, the materials of the mold parts, the heat treatment, the surface treatment, the surface finishing degree are marked, and the description is clear. Erase the mold residue, dust, oil, etc. Usually the process picture is on the mold assembly drawing. 1. The power and quantity of the heater; whether the flow line position, size and quantity of the cooling medium are suitable. 4.05 mm, and the size determined by the assembly and the requirement for the size are pointed out.
Accepting the task book The task book for molding plastic parts is usually proposed by the designer of the parts. 5. 5. Therefore, the performance, specifications and characteristics of various molding equipment Bottle mould/mold suppliers https://www.pet-mould.com/product/blow-mould/oil-bottle-blow-mould.html must be well known. After the mold assembly is completed, the inspector will perform the inspection according to the mold inspection table, mainly to test the performance of the mold parts. Mark the cavity height dimension (not required, as needed) and the overall dimensions of the mold. The material, hardness, dimensional accuracy, structure, etc. Proofreading, reviewing, drawing, and drying. Plastic molds http://. In the manufacturing process of mold parts, it is necessary to strengthen the inspection, and focus on the dimensional accuracy. 4. Data, such as task books, parts drawings, technical specifications, mold assembly drawings, mold parts drawings, base drawings, mold design specifications, inspection records, test mold repair records, etc. 7.
In order to make the processing patent number easy to understand and easy to assemble, the graphics should be as consistent as possible with the final assembly drawing, and the graphics should be clear. of the plastic parts are reasonable, the allowable degree of molding defects such as weld lines and shrinkage holes, and whether or not they are coated Post-processing such as loading, plating, gluing, drilling, etc. Parting surface and parting mode. Design Drawings 1). The position of the parting surface is conducive to mold processing, exhaust, demoulding and forming operations, surface quality of plastic parts, etc. Therefore, after the mold processing is completed, the mold test must be carried out to see the molded parts. The quality is always found. Determine the molding method by direct pressure method, casting method or injection method. 2). 4. The position of the pouring and exhaust system is appropriate. 4. When continuing to increase the weight of plastic parts, multi-cavity molds are rarely used. 4. C. 3. 3. Self-school and sign after the description. Samples of plastic parts. Anti-oxidation treatment, mold number, lettering, marking, oil seal, storage and other requirements. 5. For example, the assembly requirements for the ejector system and the slider core structure. Requirements for test and inspection. 2). Determine the shape, position, and mounting location of the heating element for cooling, heating, and heating and cooling grooves. Whether the placement of each mold part on the assembly drawing is appropriate, whether it is clear, whether it is missing or not. Other contents, such as part name, mold drawing number, material grade, heat treatment and hardness requirements, surface treatment, graphic scale, free-size machining accuracy, technical description, etc. Auxiliary tools (remove unloading tools, calibration tools, etc. For example, for the injection machine, the following should be understood in terms of specifications: injection capacity, mold clamping pressure, injection pressure, mold mounting size, ejection device and size, nozzle hole diameter and nozzle spherical radius, gate sleeve positioning ring size, The maximum thickness and minimum thickness of the mold, the stroke of the template, etc. 2. 4. According to the mold material, strength calculation or empirical data, determine the thickness and shape of the mold parts, the shape and structure, and the position of all connections, positioning and guides.Plastic mold manufacturing process
I. 8. Digest the plastic parts drawing, understand the use of the parts, analyze the technical requirements of the plastic parts, dimensional accuracy and other technical requirements. Before drawing the master assembly drawing, the process drawing should be drawn and conformed to the requirements of the parts drawing and process data. Mark the most applied roughness in the upper right corner of the drawing, as indicated by the label \u0026quot; remaining 3. 4). Outline structure and position of all connectors, positioning and guides. Determine the main molded part, the structural form of the structural part.
For the injection mold, the precision of the plastic parts is grade 3 and grade 3a, the weight is 5 grams, the hardening casting system is adopted, the number of cavities is 4-6; the plastic parts are general precision (4-5 grade), forming The material is partially crystalline, the number of cavities can be 16-20; the weight of plastic parts is 12-16g, the number of cavities is 8-12; and the weight of plastic parts is 50-100g, the number of cavities is taken 4-8. Because the molding conditions are easy to change, the general practice is to change first. 2. The size figures should be correct and should not be converted by the manufacturer. Whether it is good, only in this way can improve the manufacturing quality of the mold. Plastic parts The flow, shrinkage, weld mark, crack, and draft of the plastic material affect the performance, dimensional accuracy and surface quality of plastic parts. The mold design personnel design the mold based on the molded plastic parts task book and the mold design task book. D. 3).2. The final assembly drawing of the mold shall include the following contents: 1. Select the ejector method (jack, top tube, push plate, combined ejector) to determine the undercut treatment method and core pulling method. Professional proofreading is carried out in principle according to the designer’s self-calibration project; However, it should focus on the structural principle, process performance and operational safety. 8. When drawing, first digest the graphics, draw according to the national standard requirements, fill in all the dimensions and technical requirements.
Accepting the task book The task book for molding plastic parts is usually proposed by the designer of the parts. 5. 5. Therefore, the performance, specifications and characteristics of various molding equipment Bottle mould/mold suppliers https://www.pet-mould.com/product/blow-mould/oil-bottle-blow-mould.html must be well known. After the mold assembly is completed, the inspector will perform the inspection according to the mold inspection table, mainly to test the performance of the mold parts. Mark the cavity height dimension (not required, as needed) and the overall dimensions of the mold. The material, hardness, dimensional accuracy, structure, etc. Proofreading, reviewing, drawing, and drying. Plastic molds http://. In the manufacturing process of mold parts, it is necessary to strengthen the inspection, and focus on the dimensional accuracy. 4. Data, such as task books, parts drawings, technical specifications, mold assembly drawings, mold parts drawings, base drawings, mold design specifications, inspection records, test mold repair records, etc. 7.
In order to make the processing patent number easy to understand and easy to assemble, the graphics should be as consistent as possible with the final assembly drawing, and the graphics should be clear. of the plastic parts are reasonable, the allowable degree of molding defects such as weld lines and shrinkage holes, and whether or not they are coated Post-processing such as loading, plating, gluing, drilling, etc. Parting surface and parting mode. Design Drawings 1). The position of the parting surface is conducive to mold processing, exhaust, demoulding and forming operations, surface quality of plastic parts, etc. Therefore, after the mold processing is completed, the mold test must be carried out to see the molded parts. The quality is always found. Determine the molding method by direct pressure method, casting method or injection method. 2). 4. The position of the pouring and exhaust system is appropriate. 4. When continuing to increase the weight of plastic parts, multi-cavity molds are rarely used. 4. C. 3. 3. Self-school and sign after the description. Samples of plastic parts. Anti-oxidation treatment, mold number, lettering, marking, oil seal, storage and other requirements. 5. For example, the assembly requirements for the ejector system and the slider core structure. Requirements for test and inspection. 2). Determine the shape, position, and mounting location of the heating element for cooling, heating, and heating and cooling grooves. Whether the placement of each mold part on the assembly drawing is appropriate, whether it is clear, whether it is missing or not. Other contents, such as part name, mold drawing number, material grade, heat treatment and hardness requirements, surface treatment, graphic scale, free-size machining accuracy, technical description, etc. Auxiliary tools (remove unloading tools, calibration tools, etc. For example, for the injection machine, the following should be understood in terms of specifications: injection capacity, mold clamping pressure, injection pressure, mold mounting size, ejection device and size, nozzle hole diameter and nozzle spherical radius, gate sleeve positioning ring size, The maximum thickness and minimum thickness of the mold, the stroke of the template, etc. 2. 4. According to the mold material, strength calculation or empirical data, determine the thickness and shape of the mold parts, the shape and structure, and the position of all connections, positioning and guides.Plastic mold manufacturing process
I. 8. Digest the plastic parts drawing, understand the use of the parts, analyze the technical requirements of the plastic parts, dimensional accuracy and other technical requirements. Before drawing the master assembly drawing, the process drawing should be drawn and conformed to the requirements of the parts drawing and process data. Mark the most applied roughness in the upper right corner of the drawing, as indicated by the label \u0026quot; remaining 3. 4). Outline structure and position of all connectors, positioning and guides. Determine the main molded part, the structural form of the structural part.
For the injection mold, the precision of the plastic parts is grade 3 and grade 3a, the weight is 5 grams, the hardening casting system is adopted, the number of cavities is 4-6; the plastic parts are general precision (4-5 grade), forming The material is partially crystalline, the number of cavities can be 16-20; the weight of plastic parts is 12-16g, the number of cavities is 8-12; and the weight of plastic parts is 50-100g, the number of cavities is taken 4-8. Because the molding conditions are easy to change, the general practice is to change first. 2. The size figures should be correct and should not be converted by the manufacturer. Whether it is good, only in this way can improve the manufacturing quality of the mold. Plastic parts The flow, shrinkage, weld mark, crack, and draft of the plastic material affect the performance, dimensional accuracy and surface quality of plastic parts. The mold design personnel design the mold based on the molded plastic parts task book and the mold design task book. D. 3).2. The final assembly drawing of the mold shall include the following contents: 1. Select the ejector method (jack, top tube, push plate, combined ejector) to determine the undercut treatment method and core pulling method. Professional proofreading is carried out in principle according to the designer’s self-calibration project; However, it should focus on the structural principle, process performance and operational safety. 8. When drawing, first digest the graphics, draw according to the national standard requirements, fill in all the dimensions and technical requirements.
Plastic mold quality is the key, the price is second
The quality of plastic molds is the key, the price is second known to everyone, good goods are not cheap, cheap and not good, but who knows that some companies will sell some inferior products at high prices, this is strictly eliminated, our hardware is preform mould factory Customers provide the most professional plastic molds https://www.pet-mould.com/product/preform-mould/, so processing plastics is not a problem. For the purchase of plastic molds, not only depends on the price, more importantly, the quality of plastic molds, as well as the service cycle of the supply companies, etc., to achieve all-round thinking, and the types of plastic molds are divided into many types, so the majority When customers purchase, they must clearly understand and clarify what kind of molds they need to purchase. Only by knowing what you can buy can you purchase your favorite products. Therefore, some plastic molds that require high precision require high-precision CNC machine tools for machining. There are certain requirements for materials when processing plastics. In particular, plastic molds generally have some CAD/CAE/CAM design analysis and calculation problems, which are more cumbersome, but also ensure the quality, so that the processing precision is quite high. If you choose a good plastic mold, you will come to Jincheng Hardware. We will provide you with the most affordable and highest quality plastic molds.
The quality of plastic molds is the key, the price is second known to everyone, good goods are not cheap, cheap and not good, but who knows that some companies will sell some inferior products at high prices, this is strictly eliminated, our hardware is preform mould factory Customers provide the most professional plastic molds https://www.pet-mould.com/product/preform-mould/, so processing plastics is not a problem. For the purchase of plastic molds, not only depends on the price, more importantly, the quality of plastic molds, as well as the service cycle of the supply companies, etc., to achieve all-round thinking, and the types of plastic molds are divided into many types, so the majority When customers purchase, they must clearly understand and clarify what kind of molds they need to purchase. Only by knowing what you can buy can you purchase your favorite products. Therefore, some plastic molds that require high precision require high-precision CNC machine tools for machining. There are certain requirements for materials when processing plastics. In particular, plastic molds generally have some CAD/CAE/CAM design analysis and calculation problems, which are more cumbersome, but also ensure the quality, so that the processing precision is quite high. If you choose a good plastic mold, you will come to Jincheng Hardware. We will provide you with the most affordable and highest quality plastic molds.
