Plastic part injection mold capable of automatically demolding

Abstract

The utility model discloses a plastic part injection mold capable of automatically demolding, which comprises a fixed plate, a lower mold fixedly connected to the upper end surface of the fixed plate, an upper mold movably connected to the upper end surface of the lower mold, a top plate slidably connected to the inner bottom wall of the lower mold in a sealing manner, and two symmetrical ejector rods fixedly connected to the lower end surface of the top plate, the lower end face of the fixing plate is fixedly connected with a positioning frame, the positioning frame is fixedly connected with a fixing block, and the fixing block is fixedly connected with an electric telescopic column. Through butt joint of the lower mold and the upper mold, rapid injection molding can be conducted in the mold, and after injection molding cooling is completed, the upper mold is separated from the lower mold; the electric telescopic column stretches out to drive the extrusion block to move, the extrusion block extrudes the stress block, and the stress block extrudes the stress block to move upwards, so that the two ejector rods slide relative to the lower mold and drive the ejector plate to move upwards, an injection product is subjected to rapid demolding treatment, the mold using efficiency is improved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for plastic parts that can be automatically demolded. Background Technology

[0002] Injection molds are tools used to produce plastic products. They are usually made of materials such as steel and have a specific shape and structure. Molten plastic material is injected into the mold and then cooled and shaped to obtain the desired plastic product.

[0003] Existing injection molds typically produce injection molded products by rapidly injecting the product into the mold and allowing it to cool and solidify. However, in actual use, during the cooling and solidification process, the injection molded product is prone to sticking to the mold or getting stuck, making it difficult to remove the product quickly and affecting work efficiency. Therefore, this paper proposes an automatic demolding injection mold for plastic parts to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold for plastic parts that can be automatically demolded. By connecting the lower mold and the upper mold, rapid injection molding can be performed into the mold. After the injection molding and cooling are completed, the upper mold separates from the lower mold, the electric telescopic column extends, and moves with the extrusion block, causing the extrusion block to press against the force block, which in turn causes the force block to move upward. This allows the two ejector pins to slide with the lower mold, moving the ejector plate upward, thus enabling rapid demolding of the injection molded product, improving the efficiency of mold use and work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for plastic parts with automatic demolding capability, comprising a fixed plate, a lower mold fixedly connected to the upper surface of the fixed plate, an upper mold movably connected to the upper surface of the lower mold, a top plate slidably connected to the inner bottom wall of the lower mold, two symmetrical ejector rods fixedly connected to the lower surface of the top plate, the ejector rods being slidably connected to the lower mold, a positioning frame fixedly connected to the lower surface of the fixed plate, a fixed block fixedly connected to the positioning frame, an electric telescopic column fixedly connected to the fixed block, an extrusion block fixedly connected to the movable end of the electric telescopic column, an oblique cut surface on the upper surface of the extrusion block, a force-bearing block slidably connected to the upper surface of the extrusion block, a connecting plate fixedly connected to the upper surface of the force-bearing block, the connecting plate being fixedly connected to the ejector rods, and a moving block fixedly connected to the lower surface of the extrusion block, the moving block being slidably connected to the positioning frame.

[0006] The beneficial effects of this utility model are as follows: By docking the upper mold and the lower mold, injection molding and cooling treatment can be performed on the mold. With the lifting of the upper mold and the extension of the electric telescopic column, the extrusion block moves, causing the extrusion block to squeeze the force block. This causes the force block to move upward with the two ejector rods and the top plate, quickly lifting the injection molded product in the lower mold, which facilitates rapid demolding and prevents the injection molded product from sticking or getting stuck, thus avoiding the problem of difficult demolding.

[0007] In order to achieve rapid demolding of injection molded products;

[0008] As a further improvement to the above technical solution: two symmetrical fixed columns are fixedly connected to the upper surface of the fixed plate. A lifting groove is opened on the opposite side of the two fixed columns. A lifting block is slidably connected in the lifting groove. A retaining block is fixedly connected to the opposite side of the two lifting blocks. The retaining block is fixedly connected to the upper mold. A forward and reverse motor is fixedly connected to the upper surface of one of the fixed columns. A screw rod is connected to the output end of the forward and reverse motor. The screw rod is screwed to one of the lifting blocks.

[0009] The beneficial effects of this improvement are as follows: by operating the forward and reverse motors, the screw rod is screwed to one of the lifting blocks, thereby realizing the lifting of the lifting block. The lifting block, along with the fixed block and the upper mold, is quickly raised, and the other lifting block and the corresponding fixed block are raised and lowered accordingly. This facilitates the rapid movement of the upper mold, makes demolding easier, and improves work efficiency.

[0010] In order to achieve flexible lifting and lowering of the upper mold;

[0011] As a further improvement to the above technical solution: a limiting groove is formed on the bottom wall of the positioning frame, a limiting block is slidably connected in the limiting groove, and the limiting block is fixedly connected to the moving block.

[0012] The beneficial effects of this improvement are: by using the limiting groove and the limiting block, the moving block can be guided, ensuring sufficient stability during the movement of the extrusion block and the moving block, and preventing tilting and shaking.

[0013] In order to limit the movement of the moving block and ensure the stability of the extrusion block;

[0014] As a further improvement to the above technical solution: another lifting block is slidably connected to a guide rod, and the guide rod is fixedly connected to the fixed column.

[0015] The beneficial effects of this improvement are: by using the guide rod, the corresponding lifting block can slide on its surface, making the lifting block sufficiently stable during the lifting process and preventing the problem of tilting and jamming.

[0016] In order to guide the lifting block;

[0017] As a further improvement to the above technical solution: an injection tube is fixedly connected to one side of the lower mold, the injection tube communicates with the lower mold, and the injection tube is fixedly connected to one of the fixed columns.

[0018] The beneficial effects of this improvement are: by using an injection tube, rapid injection molding can be performed into the mold, which facilitates the cooling and molding of the injection molded product and ensures stable delivery of the injection molding material into the mold;

[0019] In order to achieve stable injection molding production in the mold;

[0020] As a further improvement to the above technical solution: support frames are fixedly connected to the four corners of the lower end face of the fixed plate.

[0021] The beneficial effects of this improvement are: by using a support frame, the fixed plate can be supported, ensuring that the fixed plate is stable enough during use and will not tilt or sway.

[0022] In order to achieve stable support for the fixed plate;

[0023] As a further improvement to the above technical solution, the support frame is provided with positioning holes.

[0024] The beneficial effects of this improvement are: by using positioning holes, the support frame can be fixed, ensuring that the support frame is stable enough during use and will not tilt or shake.

[0025] In order to fix the support frame. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;

[0027] Figure 2 Top view provided for this utility model;

[0028] Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0029] Figure 4 Provided by this utility model Figure 3 Enlarged view of point A in the middle.

[0030] In the diagram, 1. Fixed plate; 10. Lower mold; 11. Upper mold; 12. Top plate; 13. Ejector rod; 14. Positioning frame; 15. Fixed block; 16. Electric telescopic column; 17. Extrusion block; 18. Beveled surface; 19. Force-bearing block; 20. Connecting plate; 21. Moving block; 31. Fixed column; 32. Lifting groove; 33. Lifting block; 34. Fixing block; 35. Forward and reverse motor; 36. Spiral rod; 41. Limiting groove; 42. Limiting block; 51. Guide rod; 61. Injection tube; 71. Support frame; 81. Positioning hole. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0032] like Figures 1 to 4As shown in the figure, this utility model provides an automatic demolding plastic injection mold, including a fixed plate 1. A lower mold 10 is fixedly connected to the upper end face of the fixed plate 1, and an upper mold 11 is movably connected to the upper end face of the lower mold 10. An injection tube 61 is fixedly connected to one side of the lower mold 10, communicating with the lower mold 10. The injection tube 61 is fixedly connected to one of the fixed pillars 31. Through the docking between the upper mold 11 and the lower mold 10, and with the use of the injection tube 61, injection molding is performed into the mold, allowing it to cool and solidify. A top plate 12 is slidably connected to the inner bottom wall of the lower mold 10. Two symmetrical ejector rods 13 are fixedly connected to the lower end face of the top plate 12, and the ejector rods 13 are slidably connected to the lower mold 10. A positioning frame is fixedly connected to the lower end face of the fixed plate 1. 14. A fixed block 15 is fixedly connected to the positioning frame 14. An electric telescopic column 16 is fixedly connected to the fixed block 15. An extrusion block 17 is fixedly connected to the movable end of the electric telescopic column 16. A beveled surface 18 is provided on the upper end face of the extrusion block 17. A force-bearing block 19 is slidably connected to the upper end face of the extrusion block 17. A connecting plate 20 is fixedly connected to the upper end face of the force-bearing block 19. The connecting plate 20 is fixedly connected to the ejector rod 13. A movable block 21 is fixedly connected to the lower end face of the extrusion block 17. The movable block 21 is slidably connected to the positioning frame 14. With the extension of the electric telescopic column 16, the extrusion block 17 extrudes the force-bearing block 19. The beveled surface 18 slides on the second beveled surface, causing the force-bearing block 19 to move upward with the two ejector rods 13 and the top plate 12, rapidly extruding the injection molded product in the lower mold 10. For demolding, two symmetrical fixed posts 31 are fixedly connected to the upper end face of the fixed plate 1. Each fixed post 31 has a lifting groove 32 on one side facing the other. A lifting block 33 is slidably connected within the lifting groove 32. A retaining block 34 is fixedly connected to one side facing the other of the two lifting blocks 33. The retaining block 34 is fixedly connected to the upper mold 11. A forward / reverse motor 35 is fixedly connected to the upper end face of one of the fixed posts 31. A screw rod 36 is connected to the output end of the forward / reverse motor 35. The screw rod 36 is screwed to one of the lifting blocks 33. A guide rod 51 is slidably connected to the other lifting block 33. The guide rod 51 is fixedly connected to the fixed post 31. Through the operation of the forward / reverse motor 35, the screw rod 36 is screwed to one of the lifting blocks 33, causing the lifting block 33 to rise and fall. Another lifting block 33 slides along the guide rod 51, thereby enabling the upper mold 11 to rise quickly. A limiting groove 41 is provided on the inner bottom wall of the positioning frame 14, and a limiting block 42 is slidably connected within the limiting groove 41. The limiting block 42 is fixedly connected to the moving block 21. The use of the limiting groove 41 and the limiting block 42 can limit the movement of the moving block 21, ensuring sufficient stability during its movement. Support frames 71 are fixedly connected to the four corners of the lower end face of the fixed plate 1. Positioning holes 81 are provided on the support frames 71. The use of the four support frames 71 can support the fixed plate 1, ensuring its stability. The positioning holes 81 can also be used to fix the support frames 71, preventing arbitrary displacement during use.Ensure that the fixing plate 1 is sufficiently stable.

[0033] The working principle and usage process of this utility model are as follows: First, the fixing plate 1 is fixed by four supports and their corresponding positioning holes 81, ensuring sufficient stability during use. The operation of the forward and reverse motors 35 causes the spiral rod 36 to be screwed onto one of the lifting blocks 33. The other lifting block 33 slides on the guide rod 51, causing the upper mold 11 to move downwards and dock with the lower mold 10. Combined with the use of the injection tube 61, stable injection molding is performed into the mold, allowing the molded product to cool and solidify quickly. After molding, the forward and reverse motors 35 reverse, causing the upper mold 11 to move upwards and disengage from the lower mold 10. Under the action of the electric telescopic column 16, the extrusion block 17 extrudes the force-bearing block 19, causing the force-bearing block 19, along with the connecting plate 20 and two push rods 13, to move upwards. This allows the top plate 12 to quickly demold the injection mold, thus realizing the entire process of using the plastic injection mold.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic injection mold with automatic demolding capability, comprising a fixing plate (1), characterized in that: The upper end face of the fixed plate (1) is fixedly connected to the lower mold (10), the upper end face of the lower mold (10) is movably connected to the upper mold (11), the bottom wall of the lower mold (10) is sealed and slidably connected to the top plate (12), the lower end face of the top plate (12) is fixedly connected to two symmetrical push rods (13), and the push rods (13) are sealed and slidably connected to the lower mold (10); A positioning frame (14) is fixedly connected to the lower end face of the fixed plate (1). A fixing block (15) is fixedly connected to the positioning frame (14). An electric telescopic column (16) is fixedly connected to the fixing block (15). A pressing block (17) is fixedly connected to the movable end of the electric telescopic column (16). A chamfered surface (18) is provided on the upper end face of the pressing block (17). A force-bearing block (19) is slidably connected to the upper end face of the pressing block (17). A connecting plate (20) is fixedly connected to the upper end face of the force-bearing block (19). The connecting plate (20) is fixedly connected to the top rod (13). A moving block (21) is fixedly connected to the lower end face of the pressing block (17). The moving block (21) is slidably connected to the positioning frame (14).

2. The automatically demolding injection mold for plastic parts according to claim 1, characterized in that: The upper end face of the fixed plate (1) is fixedly connected to two symmetrical fixed columns (31). Each of the two fixed columns (31) has a lifting groove (32) on one side. A lifting block (33) is slidably connected in the lifting groove (32). A retaining block (34) is fixedly connected on one side of each of the two lifting blocks (33). The retaining block (34) is fixedly connected to the upper mold (11). A forward and reverse motor (35) is fixedly connected to the upper end face of one of the fixed columns (31). A screw rod (36) is connected to the output end of the forward and reverse motor (35). The screw rod (36) is screwed to one of the lifting blocks (33).

3. The automatically demolding injection mold for plastic parts according to claim 1, characterized in that: A limiting groove (41) is provided on the bottom wall of the positioning frame (14), and a limiting block (42) is slidably connected in the limiting groove (41). The limiting block (42) is fixedly connected to the moving block (21).

4. The automatically demoldable plastic injection mold according to claim 2, characterized in that: Another lifting block (33) is slidably connected to a guide rod (51), which is fixedly connected to the fixed column (31).

5. The automatically demoldable plastic injection mold according to claim 2, characterized in that: An injection tube (61) is fixedly connected to one side of the lower mold (10). The injection tube (61) is connected to the lower mold (10) and is fixedly connected to one of the fixed columns (31).

6. The automatically demoldable plastic injection mold according to claim 1, characterized in that: Support frames (71) are fixedly connected to the four corners of the lower end face of the fixed plate (1).

7. The automatically demoldable plastic injection mold according to claim 6, characterized in that: The support frame (71) is provided with positioning holes (81).

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