Forming mold for injection molding of plastic part

Abstract

The utility model discloses a forming mold for injection molding of a plastic part. The forming mold comprises an upper top plate, a lower bottom plate and a positioning frame, an upper template is arranged at the bottom of the upper top plate; a middle template is arranged at the bottom of the upper template; fixing blocks are arranged on the two sides of the top of the lower bottom plate, and a lower die plate is arranged on the tops of the fixing blocks. Injection molding materials can be extruded through the output end of the air cylinder, then the injection molding materials are cooled through the cooling pipe, so that the injection molding materials can form workpieces in the upper mold plate, the middle mold plate and the machining table, the upper top plate, the upper mold plate and the middle mold plate are moved upwards, the machined workpieces are exposed, and then the workpieces are machined. Therefore, the workpiece can be taken out. The bottom of the middle mold plate makes contact with the top of the lower mold plate, the middle mold plate makes contact with the lower mold plate more tightly, sealing is formed, the bottom of the upper mold plate makes contact with the top of the middle mold plate, sealing is formed, then external air is prevented from entering the mold, and the yield of workpieces is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a molding mold for plastic part injection molding processing. Background Technique

[0002] An injection mold is a tool for producing plastic products and also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used for mass-producing some parts with complex shapes. Specifically, it means injecting the heat-melted plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidifying, the formed product is obtained, which facilitates people's lives, reduces people's labor intensity, and improves work efficiency.

[0003] Currently, during the process of processing workpieces, by pouring materials into the interior of the molding mold, the materials are processed into the required plastic parts inside the molding mold, and then the mold is disassembled to take out the processed and formed workpieces. However, when the workpieces are being formed, most molds use natural cooling or air cooling. When using natural cooling or air cooling to cool the mold, the cooling effect may not be obvious enough, resulting in a slower cooling rate of the workpieces inside the mold and a slower forming speed of the workpieces, thus making it inconvenient to use. At the same time, when taking out the workpieces inside the mold, most separate the upper mold and the lower mold. When separating the upper mold and the lower mold, the closure between the upper mold and the lower mold may not be tight enough, and thus external gas may enter the interior of the mold through the gap between the upper mold and the lower mold, generating air bubbles inside the workpieces, which may affect the yield rate of the workpieces. In view of this, we introduce a molding mold for plastic part injection molding processing, which can clean impurities from wet feed and dry wet feed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a molding mold for plastic part injection molding processing to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A molding mold for plastic part injection molding processing, comprising: an upper top plate, a lower bottom plate, and a positioning frame;

[0006] A upper template is arranged at the bottom of the upper top plate, and a middle template is arranged at the bottom of the upper template;

[0007] Fixing blocks are arranged on both sides of the top of the lower bottom plate, and the fixing blocks are fixedly connected to the lower bottom plate. A lower template is arranged at the top of the fixing blocks;

[0008] The positioning frame is arranged on both sides inside the lower template. Cooling pipes are connected inside the upper template, the middle template, and the lower template, and condensate is conveyed inside the cooling pipes to cool the upper template, the middle template, and the lower template;

[0009] A limiting mechanism is provided between the top of the lower base plate and the lower template. The lower template slides on the limiting rod of the limiting mechanism so that the limiting rod limits the movement of the lower template.

[0010] Preferably, the limiting mechanism includes a spring sleeved on the surface of the limiting rod. After the lower template is installed, the lower template will squeeze the spring on the surface of the limiting rod, causing the spring to compress. A limiting groove for sliding the limiting rod is provided inside the lower template, and the limiting rod is convenient for sliding inside the lower template. A positioning column is connected to the top of the fixed block, and the positioning column is fixedly connected to the fixed block. A positioning cylinder is sleeved on the surface of the positioning column, and the positioning cylinder is arranged inside the lower template, and the positioning cylinder is convenient for sliding on the surface of the positioning column.

[0011] Preferably, a processing table is provided inside the middle template, and the processing table is located on the top of the lower template. The setting of the processing table is convenient for processing workpieces. A positioning ring is connected inside the upper top plate, and a workpiece is connected to the top of the processing table inside the positioning ring.

[0012] Preferably, an injection port is provided on the top of the upper top plate. The outer diameter dimension of the injection port is the same as the dimension of the positioning ring, and the injection port is convenient for injecting injection materials inside.

[0013] Preferably, a cylinder is provided on one side of the positioning frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The output end of the cylinder of the present utility model can squeeze the injection material, and then the injection material is cooled through the cooling pipe, so that the injection material can quickly form a workpiece inside the upper template, the middle template and the processing table, increasing the cooling effect. Immediately afterwards, the upper top plate, the upper template and the middle template are moved upward, so that the processed workpiece is exposed. Then the operator can take out the processed and formed workpiece, and the operation is more convenient;

[0015] By the bottom of the middle template contacting the bottom of the positioning cylinder, moving the middle template downward can drive the positioning cylinder to slide on the surface of the positioning column, so that the bottom of the middle template can contact the top of the lower template, making the contact between the middle template and the lower template closer and forming a seal. When the upper top plate drives the upper template to move downward, the bottom of the upper template will contact the top of the middle template to form a seal, so as to prevent gaps from appearing between the upper template and the middle template, thereby preventing external air from entering and increasing the yield of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the whole of the present utility model;

[0017] Figure 2 Schematic structural diagram of the rear view of the present utility model;

[0018] Figure 3 Schematic structural diagram of the first perspective of the present utility model;

[0019] Figure 4 Schematic structural diagram when the upper top plate, upper template, middle template and lower template of the present utility model are disassembled;

[0020] Figure 5 Schematic structural diagram of the second perspective of the present utility model;

[0021] Figure 6 Schematic structural diagram when the upper top plate, upper template, middle template and lower template of the present utility model are disassembled and viewed from the front;

[0022] Figure 7 Schematic structural diagram when the upper top plate, upper template, middle template and lower template of the present utility model are disassembled and viewed from the rear;

[0023] Figure 8 Schematic structural diagram of the third perspective of the present utility model.

[0024] In the figure: 1. Upper top plate; 2. Upper template; 3. Middle template; 4. Cylinder; 5. Positioning frame; 6. Lower template; 7. Limit rod; 8. Fixed block; 9. Lower bottom plate; 10. Spring; 11. Processing table; 12. Workpiece; 13. Positioning cylinder; 14. Injection port; 16. Positioning ring; 17. Positioning column; 18. Cooling pipe. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-8 , the present utility model provides a technical solution: a molding die for plastic part injection molding, including: an upper top plate 1, a lower part of the upper top plate 1 is provided with an upper template 2, and a lower part of the upper template 2 is provided with a middle template 3;

[0027] A lower bottom plate 9, both sides of the top of the lower bottom plate 9 are provided with fixed blocks 8, and the top of the fixed blocks 8 is provided with a lower template 6;

[0028] The positioning frame 5 is arranged on both inner sides of the lower template 6. A cooling pipe 18 is connected inside the upper template 2, the middle template 3 and the lower template 6, and the inside of the cooling pipe 18 conveys condensate, thereby cooling the upper template 2, the middle template 3 and the lower template 6;

[0029] A limiting mechanism is arranged between the top of the lower bottom plate 9 and the lower template 6. The lower template 6 slides on the limiting rod 7 of the limiting mechanism, so that the limiting rod 7 limits the movement of the lower template 6.

[0030] The limiting mechanism includes a spring 10 sleeved on the surface of the limiting rod 7. A limiting groove for slidingly connecting the limiting rod 7 is opened inside the lower template 6. A positioning column 17 is connected to the top of the fixed block 8, and a positioning cylinder 13 is sleeved on the surface of the positioning column 17. The positioning cylinder 13 is arranged inside the lower template 6.

[0031] A processing table 11 is arranged inside the middle template 3, and the processing table 11 is located on the top of the lower template 6. The arrangement of the processing table 11 facilitates the processing of the workpiece 12. A positioning ring 16 is connected inside the upper top plate 1, and a workpiece 12 is connected to the top of the processing table 11 inside the positioning ring 16.

[0032] An injection port 14 is opened on the top of the upper top plate 1. The outer diameter size of the injection port 14 is the same as the size of the positioning ring 16, and the inside of the injection port 14 is convenient for injecting injection materials.

[0033] A cylinder 4 is arranged on one side of the positioning frame 5.

[0034] Specifically, when in use, the injection material is injected into the upper template 2, the middle template 3 and the inside of the processing table 11 through the inside of the injection port 14. Then the cylinder 4 is started, and the output end of the cylinder 4 can be used to extrude the injection material, so that the injection material is gradually formed. Then the injection material is cooled by the cooling pipe 18, so that the injection material can form the workpiece 12 inside the upper template 2, the middle template 3 and the processing table 11. Immediately afterwards, the upper top plate 1, the upper template 2 and the middle template 3 are moved upwards, so that the processed workpiece 12 is exposed. Then the operator can take out the processed workpiece 12, and the operation is more convenient;

[0035] Next, move the upper top plate 1, the upper template 2 and the middle template 3 downward, so that the bottom of the middle template 3 contacts the bottom of the positioning cylinder 13. At this time, moving the middle template 3 downward can drive the positioning cylinder 13 to slide on the surface of the positioning column 17, and then the bottom of the middle template 3 can contact the top of the lower template 6, making the contact between the middle template 3 and the lower template 6 closer to form a seal. When the upper top plate 1 drives the upper template 2 to move downward, the bottom of the upper template 2 will contact the top of the middle template 3 to form a seal, thus preventing a gap from occurring between the upper template 2 and the middle template 3, and further preventing external air from entering, increasing the yield rate of the workpiece 12.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A molding die for plastic parts injection molding, characterized in that: include: An upper top plate (1), wherein an upper template (2) is arranged at the bottom of the upper top plate (1), and a middle template (3) is arranged at the bottom of the upper template (2); A lower base plate (9), wherein fixing blocks (8) are arranged on both sides of the top of the lower base plate (9), and a lower template (6) is arranged on the top of the fixing block (8); A positioning frame (5), the positioning frame (5) being arranged on both sides of the interior of the lower template (6), and the interiors of the upper template (2), the middle template (3) and the lower template (6) are connected with cooling pipes (18); A limiting mechanism is provided between the top of the lower base plate (9) and the lower template (6), and the lower template (6) slides on a limiting rod (7) of the limiting mechanism, so that the limiting rod (7) limits the movement of the lower template (6).

2. A molding die for plastic part injection molding according to claim 1, characterized in that: The limiting mechanism comprises a spring (10) sleeved on the surface of a limiting rod (7); a limiting groove for slidingly connecting the limiting rod (7) is provided inside the lower template (6); a positioning column (17) is connected to the top of the fixed block (8); a positioning cylinder (13) is sleeved on the surface of the positioning column (17); and the positioning cylinder (13) is arranged inside the lower template (6).

3. A molding die for plastic part injection molding according to claim 1, characterized in that: A processing table (11) is arranged inside the middle template (3), and the processing table (11) is located on the top of the lower template (6). A positioning ring (16) is connected inside the upper top plate (1), and the inside of the positioning ring (16) is located on the top of the processing table (11) and is connected to a workpiece (12).

4. A molding die for plastic part injection molding according to claim 1, characterized in that: An injection port (14) is provided on the top of the upper top plate (1).

5. A molding die for plastic part injection molding according to claim 1, characterized in that: A cylinder (4) is provided on one side of the positioning frame (5).

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