CN217834534U - Single-cavity double-injection mold structure for automobile plastic part - Google Patents

Abstract

The utility model relates to the technical field of automobile plastic parts manufacturing, in particular to a single-cavity double-shot mold structure for automobile plastic parts. A fixed mold is fixedly installed on the end of the table, and the first cavity is opened on the side wall of the fixed mold. The workbench and the fixed mold are both movably connected, and the lower end of the movable mold is symmetrically fixed with a dovetail block, and the two dovetail blocks are respectively slidably installed in two dovetail grooves, and a second cavity is provided on the opposite end of the movable mold and the fixed mold. The middle part of the inner wall of the second mold cavity is provided with a first ejection groove, and the middle part of the inner wall of the first ejection groove is provided with a first column groove, and the demoulding is completed under the action of two ejection forces, which effectively increases the ejection force during demoulding. Out of the area, making demoulding less prone to sticking and more convenient.

Description

A single-cavity double-shot mold structure for automotive plastic parts

technical field

The utility model relates to the technical field of manufacturing automobile plastic parts, in particular to a single-cavity double-shot mold structure for automobile plastic parts.

Background technique

Injection molding, also known as injection molding, is a molding method of injection and molding. The advantages of injection molding method are fast production speed, high efficiency, automatic operation, various designs and colors, and shapes from simple to complex. The size can range from large to small, and the product size is accurate, the product is easy to replace, and can be formed into parts with complex shapes. Injection molding is suitable for mass production and complex-shaped products and other molding processing fields.

For example, the Chinese patent discloses: a mold structure for forming plastic parts with slender holes, publication number: CN215849368U. The utility model adopts a retractable cylinder body, which can push the cylinder body through the injection pressure when injecting glue in the injection chamber. Move back, so that the length of the hole needle gradually changes during the injection process until the product needs it. Because the length of the hole needle is relatively short when it is not injected, the part of the utility model is easily broken by the injection pressure or Punching deformation can effectively protect the hole needle, but the mold is easy to stick to the mold cavity during demoulding in actual use, so that the plastic parts are easily damaged during strong demoulding, resulting in economic losses.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a single-cavity double-shot mold structure for automobile plastic parts.

In order to solve the above technical problems, the utility model provides the following technical solutions: a single-cavity double-shot mold structure for automobile plastic parts, including a workbench, the upper end of the workbench is symmetrically provided with dovetail grooves, and the lower end of the workbench is fixed and installed There is a bottom plate, a fixed mold is fixedly installed on the upper end of the workbench, a first mold cavity is opened on the side wall of the fixed mold, a fixed frame is arranged at the front end of the fixed mold, and a screw feeder is symmetrically arranged inside the fixed frame. barrel, and the injection ports of the two screw feeding barrels are both set in the fixed mold and communicated with the first cavity;

A feeding mechanism is fixedly installed on the upper end of the workbench;

The feeding mechanism includes a support plate, both of the two support plates are fixedly connected to the workbench, and a raw material box is fixedly installed between the two support plates;

The rear end of the fixed mold is provided with a demoulding mechanism;

The demoulding mechanism includes a movable mold, the movable mold is movably connected with the workbench and the fixed mold, the lower end of the movable mold is symmetrically fixed with a dovetail block, and the two dovetail blocks are respectively slidably installed in two dovetail grooves middle.

As a preferred technical solution of the present utility model, sockets are provided at the four corners of the upper end of the raw material box, inserting posts are slidably installed inside the four inserting holes, and the upper ends of the four inserting posts are fixedly installed with A cover plate, a partition plate is fixedly installed in the inner wall of the raw material box.

As a preferred technical solution of the present invention, a second mold cavity is provided on the opposite end of the movable mold to the fixed mold, a first ejection groove is opened in the middle of the inner wall of the second mold cavity, and the first ejector The middle part of the inner wall of the outlet groove is provided with a first column groove, and the outer periphery of the inner wall of the second mold cavity is provided with a second ejection groove, and the inner wall of the second ejection groove is evenly and equidistantly provided with second column grooves.

As a preferred technical solution of the present utility model, a fixed block is provided at the rear end of the movable mold, and the fixed block is fixedly connected with the workbench. A first top plate is fixedly installed on one end of the fixed block, and the first top plate and the center column are movably arranged in the first ejection groove and the first column groove respectively.

As a preferred technical solution of the present invention, movable columns are slidably installed inside the fixed block, springs are movably sleeved on the surfaces of the four movable columns, and fixed springs are fixedly sleeved on the surfaces of the four movable columns. ring, and the two ends of the four movable columns are respectively fixedly connected with the fixed block and the fixed ring.

As a preferred technical solution of the present utility model, the end of the movable column far away from the fixed block is fixedly installed with a second top plate, and the movable column and the second top plate are slidingly arranged in the second column groove and the second top plate respectively. Out of slot.

Compared with the prior art, the beneficial effects that the utility model can achieve are:

First, the sliding of the movable column will drive the fixed ring to slide. At this time, the fixed ring squeezes the spring to compress. When the spring is compressed to the maximum value, the fixed ring is restricted by the fixed block and cannot move. Then The movable column and the second ejection plate slide in the second column groove and the second ejection groove to apply force to the mold again, and the demoulding is completed under the action of the two ejection forces, which effectively increases the ejection force during demoulding. Out of the area, making demoulding less prone to sticking and more convenient.

Second, the two raw materials pass through and inject into two screw feeding barrels respectively, and then inject into the first cavity through the screw feeding barrel. At this time, the inside of the first cavity and the second cavity are filled and formed, so that the equipment When in use, the effective separation and comparison of the two raw materials can be completed, which effectively avoids the transfer and injection of workpieces, reduces the use of molds, and improves production efficiency.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the fixed mold connection structure of the present utility model;

Fig. 3 is a schematic diagram of the connection explosion structure of the raw material box of the present invention;

Fig. 4 is a schematic diagram of the explosion structure of the movable mold connection of the present invention.

Among them: 11. Workbench; 12. Dovetail groove; 13. Bottom plate; 14. Fixed mold; 15. First mold cavity; 16. Fixed frame; 17. Spiral feeding barrel; 21. Support plate; 22. Raw material box; 23. Jack; 24. Inserting column; 25. Cover plate; 26. Partition plate; 31. Moving mold; 32. Dovetail block; 33. Second cavity; 34. First ejection groove; 35. First Column groove; 36, second ejection groove; 37, second column groove; 41, fixed block; 42, central column; 43, first top plate; 44, movable column; 45, spring; 46, fixed ring; 47 , the second top plate.

Detailed ways

In order to make the technical means, creative features, goals and effects of the utility model realized easy to understand, the utility model will be further elaborated below in conjunction with specific examples, but the following examples are only preferred embodiments of the utility model, not all . Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present utility model. The experimental methods in the following examples, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial sources.

Example:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a single-cavity double-shot mold structure for automotive plastic parts includes a workbench 11, the upper end of the workbench 11 is symmetrically provided with a dovetail groove 12, and the lower end of the workbench 11 is fixed. A base plate 13 is installed, a fixed mold 14 is fixedly installed on the upper end of the workbench 11, a first mold cavity 15 is provided on the side wall of the fixed mold 14, a fixed frame 16 is arranged on the front end of the fixed mold 14, and a screw feeder is arranged symmetrically inside the fixed frame 16. Barrel 17, the injection ports of the two screw feeding barrels 17 are all set in the fixed mold 14 and communicate with the first cavity 15;

The upper end of the workbench 11 is fixedly equipped with a feeding mechanism;

Feeding mechanism comprises support plate 21, and two support plates 21 are all fixedly connected with workbench 11, and between two support plates 21, raw material box 22 is fixedly installed, and the four jiaos of upper end of raw material box 22 are all provided with jack 23, and Each jack 23 inside is all slidably installed with post 24, four post 24 upper ends are fixedly installed with cover plate 25, is fixedly installed with dividing plate 26 in the raw material box 22 inner wall, injects two into raw material box 22 interior earlier during use. raw materials of different colors, at this time, the two raw materials are separated under the action of the partition plate 26, at this time, the post 24 is inserted into the jack 23, and the sealing is completed through the cover plate 25. When the equipment is in operation, the two raw materials Inject into two screw feeding barrels 17 through 27 and 28 respectively, and then inject into the inside of the first cavity 15 through the screw feeding barrel 17. At this time, the inside of the first cavity 15 and the second cavity 33 are filled and formed, so that The equipment can complete the effective separation and injection of the two raw materials during use, effectively avoiding the transfer and injection of the workpiece, reducing the use of molds and improving production efficiency;

The rear end of the fixed mold 14 is provided with a demoulding mechanism;

The demoulding mechanism includes a movable mold 31, which is movably connected with the workbench 11 and the fixed mold 14. The lower end of the movable mold 31 is symmetrically fixed with a dovetail block 32, and the two dovetail blocks 32 are respectively slidably installed in two dovetail grooves 12. Among them, the end of the movable mold 31 opposite to the fixed mold 14 is provided with a second mold cavity 33, the middle part of the inner wall of the second mold cavity 33 is provided with a first ejection groove 34, and the middle part of the inner wall of the first ejection groove 34 is provided with a first column Groove 35, second ejection groove 36 is provided on the periphery of the inner wall of the second mold cavity 33, second column grooves 37 are evenly and equally spaced in the inner wall of the second ejection groove 36, and the rear end of the movable mold 31 is provided with a fixed block 41, fixed The block 41 is fixedly connected with the workbench 11, the middle part of the side wall of the fixed block 41 is fixedly equipped with a central column 42, and the end of the central column 42 away from the fixed block 41 is fixedly installed with a first top plate 43, the first top plate 43 and the center column 42 The activities are arranged in the first ejection groove 34 and the first column groove 35 respectively. The movable column 44 is slidably installed inside the fixed block 41. The surfaces of the four movable columns 44 are all movably sleeved with springs 45. The surfaces of the four movable columns 44 are The upper fixed sleeve is provided with a fixed ring 46, and the two ends of the four movable columns 44 are fixedly connected with the fixed block 41 and the fixed ring 46 respectively, and the end of the movable column 44 away from the fixed block 41 is fixedly equipped with a second top plate 47, and the movable column 44 and the second top plate 47 are respectively slid in the second column groove 37 and the second ejection groove 36. After the mold is cooled, the movable mold 31 can be moved backward at this time, and the movement of the movable mold 31 will drive The dovetail block 32 fixed to it slides inside the dovetail groove 12. At this time, under the movement of the movable mold 31, the center column 42 and the first top plate 43 will be driven in the first column groove 35 and the first ejection groove 34 respectively. At this time, the first top plate 43 initially ejects the mold to let it loosen. With the continuous movement of the movable mold 31, the second top plate 47 exerts a backward force on the movable column 44. At this time, the movable column 44 Sliding occurs inside the fixed block 41, and the sliding of the movable column 44 will drive the fixed ring 46 fixed thereto to slide. At this time, the fixed ring 46 squeezes the spring 45 to generate compression. When the spring 45 is compressed to the maximum value, the The fixed ring 46 is restricted by the fixed block 41 and cannot move, and then the movable column 44 and the second top plate 47 slide inside the second column groove 37 and the second ejection groove 36 to apply force to the mold again. The demoulding is completed under the action, which effectively increases the ejection area during demoulding, making demoulding less prone to adhesion and more convenient.

working principle:

The first step: when using, first inject two colors of raw materials into the raw material box 22. At this time, the two raw materials are separated under the action of the partition plate 26. At this time, insert the post 24 into the jack 23 and pass through the cover plate. 25 completes the sealing. When the equipment is in operation, the two raw materials are injected into the two screw feeding barrels 17 through 27 and 28 respectively, and then injected into the inside of the first mold cavity 15 through the screw feeding barrel 17. At this time, in the first mold Cavity 15 and second mold cavity 33 are filled and molded, so that the equipment can complete the effective separation and injection of two raw materials during use, effectively avoiding the transfer and injection of workpieces, reducing the use of molds, and improving production efficiency.

Step 2: After the mold is cooled, the movable mold 31 can be moved backwards, and the moving mold 31 will drive the fixed dovetail block 32 to slide inside the dovetail groove 12. At this time, the movable mold 31 The movement will drive the center column 42 and the first top plate 43 to slide inside the first column groove 35 and the first ejection groove 34 respectively. At this time, the first top plate 43 will initially eject the mold to make it loose. As the mold 31 continues to move, the second top plate 47 exerts a backward force on the movable column 44. At this time, the movable column 44 slides inside the fixed block 41, and the sliding of the movable column 44 will drive the fixed block. The fixed ring 46 slides, and now the fixed ring 46 squeezes the spring 45 to generate compression. When the spring 45 is compressed to the maximum value, the fixed ring 46 is restricted by the fixed block 41 and cannot move, and then the movable column 44 and the second top plate 47 Sliding occurs inside the second column groove 37 and the second ejection groove 36 to apply force to the mold again, and the demoulding is completed under the action of the two ejection forces, which effectively increases the ejection area during demoulding, making the demoulding The mold is not easy to stick and the convenience is higher.

Above, the embodiment of the present utility model has been described in detail in conjunction with the accompanying drawings, but the present utility model is not limited thereto. Make various changes.

Claims (6)

1. The utility model provides a car plastic part list chamber bijection mould structure, includes workstation (11), dovetail (12) have been seted up to workstation (11) upper end symmetry, tip fixed mounting has bottom plate (13), its characterized in that under workstation (11): a fixed die (14) is fixedly installed at the upper end of the workbench (11), a first die cavity (15) is formed in the side wall of the fixed die (14), a fixed frame (16) is arranged at the front end of the fixed die (14), spiral feed barrels (17) are symmetrically arranged in the fixed frame (16), and injection ports of the two spiral feed barrels (17) are arranged in the fixed die (14) and communicated with the first die cavity (15);

a feeding mechanism is fixedly arranged at the upper end part of the workbench (11);

the feeding mechanism comprises supporting plates (21), the two supporting plates (21) are fixedly connected with the workbench (11), and a raw material box (22) is fixedly arranged between the two supporting plates (21);

the rear end of the fixed die (14) is provided with a demoulding mechanism;

demoulding mechanism includes movable mould (31), equal swing joint of movable mould (31) and workstation (11) and cover half (14), tip symmetry fixed mounting has dovetail (32), two under movable mould (31) dovetail (32) slidable mounting respectively in two dovetail (12).

2. The single-cavity double-injection mold structure for the plastic parts of the automobile according to claim 1, wherein four corners of the upper end of the raw material box (22) are provided with insertion holes (23), four insertion posts (24) are slidably mounted inside the four insertion holes (23), the upper ends of the four insertion posts (24) are fixedly provided with cover plates (25), and the inner wall of the raw material box (22) is fixedly provided with partition plates (26).

3. The single-cavity double-injection mold structure for the plastic parts of the automobile as claimed in claim 1, wherein a second mold cavity (33) is formed in an end of the movable mold (31) opposite to the fixed mold (14), a first ejection slot (34) is formed in the middle of the inner wall of the second mold cavity (33), a first column slot (35) is formed in the middle of the inner wall of the first ejection slot (34), a second ejection slot (36) is formed in the periphery of the inner wall of the second mold cavity (33), and second column slots (37) are uniformly and equidistantly formed in the inner wall of the second ejection slot (36).

4. The single-cavity double-injection mold structure for the plastic parts of the automobiles according to claim 3, wherein a fixed block (41) is disposed at the rear end of the movable mold (31), the fixed block (41) is fixedly connected with the workbench (11), a central column (42) is fixedly installed in the middle of the side wall of the fixed block (41), a first top plate (43) is fixedly installed on one end of the central column (42) far away from the fixed block (41), and the first top plate (43) and the central column (42) are respectively and movably disposed in the first ejecting groove (34) and the first column groove (35).

5. The single-cavity double-injection mold structure for the automobile plastic parts as claimed in claim 4, wherein the fixed block (41) is internally slidably provided with four movable columns (44), the surface of each of the four movable columns (44) is movably sleeved with a spring (45), the surface of each of the four movable columns (44) is fixedly sleeved with a fixed ring (46), and two ends of each of the four movable columns (44) are respectively and fixedly connected with the fixed block (41) and the fixed ring (46).

6. The plastic part single-cavity double-injection mold structure for the automobile according to claim 5, wherein a second top plate (47) is fixedly installed at one end of the movable column (44) far away from the fixed block (41), and the movable column (44) and the second top plate (47) are respectively and slidably arranged in the second column groove (37) and the second ejection groove (36).

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