An injection mold

Abstract

This utility model discloses an injection mold, belonging to the field of mold technology, comprising: an upper mold and a lower mold; the upper mold includes an upper template, a positioning plate, and an upper mold base, and an upper mold core is disposed within the upper mold base; the lower mold includes a lower template, a lower mold base plate, a push plate, and a lower mold base, and a lower mold protrusion is disposed on the lower mold base. This utility model has several molding core cavities arranged around the circumference of the injection channel, allowing for the simultaneous molding of several injection molded parts, thus improving the production efficiency of injection molded parts. The lower mold has a sliding top sleeve on the outer sleeve of the lower mold protrusion, with a large contact area between its port and the injection molded part, allowing for stable ejection of the injection molded part and preventing it from getting caught on the ejector rod, thereby reducing maintenance frequency and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to an injection mold. Background Technology

[0002] In modern industrial production, injection molds, as key equipment for mass production of plastic products, directly affect production efficiency, molding quality, and cost control. Currently, existing injection molds, due to numerous design flaws, generally suffer from low production efficiency, failing to meet the demands of large-scale industrial production. Furthermore, many existing injection molds exhibit significant shortcomings in their demolding mechanisms. Some molds employ simplistic demolding methods, such as relying solely on ejector pins, which often fails to achieve smooth and rapid demolding for complex plastic products with deep cavities or thin walls. Therefore, this invention provides an injection mold. Utility Model Content

[0003] The purpose of this invention is to provide an injection mold.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: An injection mold includes: an upper mold and a lower mold; The upper mold includes an upper template, a positioning plate fixedly connected to a first side of the upper template, and an upper mold base fixedly connected to the other side, with an injection channel at the center; the positioning plate has a positioning hole concentric with the injection channel at its center; the bottom surface of the upper mold base has a plurality of accommodating cavities evenly distributed along the circumference of the injection channel; each accommodating cavity contains an upper positioning component, a molding cavity covering the upper positioning component, and a connecting block fitted around the bottom outer edge of the molding cavity; there is a cavity between the molding cavity and the upper positioning component, and a cavity between the connecting block and the molding cavity; the bottom surface of the connecting block is flush with the bottom surface of the upper mold base, and an injection channel is formed inside it, the starting point of the injection channel being located on the bottom surface of the connecting block, and the ending point being located on the inner wall of the connecting block; the bottom end of the injection channel extends to the bottom surface of the upper mold base; The lower mold includes a lower template, a lower mold base plate is provided on the first side of the lower template, and a support rod is provided on the second side. A sliding column and a push plate movably sleeved on the side of the lower mold base plate away from the lower template are provided. The support rod passes through the lower template and the lower mold base plate and is fixedly connected to the bottom surface of the push plate. A spring with its end abutting against the second side of the lower template is also sleeved on it. The sliding column is provided with a lower mold base at its top. The lower mold base has several through slots corresponding to the accommodating installation cavity. A lower mold protrusion and a sliding top sleeve are coaxially arranged in the through slots. The lower mold protrusion is located above the lower mold base and can be inserted into the molding cavity to form an injection cavity. Its bottom end extends to be fixedly connected to the lower mold base plate. The sliding top sleeve is slidably sleeved outside the lower mold protrusion, and its bottom end is fixedly connected to the push plate. The top surface of the lower mold base is recessed to form an injection flow channel. The starting point of the injection flow channel is connected to the injection channel, and the ending point is connected to the starting point of the injection channel.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme, the upper mold base is provided with a plurality of positioning grooves, and the lower mold base is provided with a plurality of positioning pins that are adapted to the positioning grooves.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme, the bottom surface of the upper mold base is provided with at least two contact sensors with several protrusions, and the lower mold base is provided with contact grooves corresponding to the contact sensors.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme, pads are provided on both sides of the push plate, and the two ends of the pads are fixedly connected to the lower mold base plate and the lower mold seat, respectively.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme, the upper mold base has several cooling channels, and the two ends of the cooling channels are connected to the connecting pipes provided on the outer wall of the upper mold base.

[0009] Based on the above solution and as a preferred embodiment, it further includes a locking component, which is detachably connected to the upper template and the lower template respectively.

[0010] Compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model has several molding core cavities arranged around the circumference of the injection channel, which can simultaneously mold several injection molded parts, improving the production efficiency of injection molded parts. The lower mold has a sliding top sleeve on the outer sleeve of the lower mold convex part, whose port has a large contact with the injection molded part, allowing for stable ejection of the injection molded part and preventing it from getting caught on the ejector rod, thus reducing maintenance frequency and improving work efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the upper mold structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the lower mold structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the structure of the concealed lower mold base of this utility model.

[0015] Figure 5 This is a partial structural diagram of the present utility model.

[0016] In the diagram: 11. Upper mold plate; 12. Positioning plate; 13. Upper mold base; 14. Injection channel; 15. Upper positioning component; 16. Molding cavity; 17. Connecting block; 18. Injection channel; 19. Positioning groove; 110. Contact sensor; 111. Connecting pipe; 21. Lower mold plate; 22. Lower mold base plate; 23. Support rod; 24. Sliding column; 25. Push plate; 26. Spring; 27. Lower mold base; 28. Lower mold punch; 29. ​​Sliding top sleeve; 210. Injection runner; 211. Positioning post; 212. Contact groove; 213. Pad block; 3. Locking components. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0018] like Figures 1 to 5 As shown, an injection mold includes: a matching upper mold and a lower mold, wherein: like Figure 1 and Figure 2 As shown, the upper mold includes an upper template 11, a positioning plate 12 is fixedly connected to the first side of the upper template 11, an upper mold base 13 is fixedly connected to the second side, and an injection channel 14 is provided in the center.

[0019] The positioning plate 12 has a positioning hole concentric with the injection channel 14 at its center, and the diameter of the positioning hole gradually decreases from the direction closer to the upper mold plate 11. The bottom surface of the upper mold base 13 has a plurality of accommodating cavities evenly distributed along the circumference of the injection channel 14. In this embodiment, there are four accommodating cavities. A vertical upper positioning member 15, a molding cavity 16 covering the upper positioning member 15, and a connecting block 17 fitted around the bottom outer edge of the molding cavity 16 are fixedly disposed within each accommodating cavity.

[0020] There is a cavity between the molding cavity 16 and the upper positioning member 15, and there is a cavity between the connecting block 17 and the molding cavity 16. A connecting cavity is provided on the molding cavity 16 to connect the two cavities together to form an injection mold cavity. The bottom surface of the connecting block 17 is flush with the bottom surface of the upper mold base 13, and an injection channel 18 is provided inside it. The starting point of the injection channel 18 is located on the bottom surface of the connecting block 17, and the ending point is located on the inner wall of the connecting block 17.

[0021] The bottom end of the injection channel 14 extends to the bottom surface of the upper mold base 13; like Figure 1 , Figure 3 and Figure 4 As shown, the lower mold includes a lower template 21, a lower mold base plate 22 is provided on the first side of the lower template 21, and a support rod 23 is provided on the second side. Among them, a sliding column 24 and a push plate 25 movably sleeved on the sliding column 24 are provided on the side of the lower mold base plate 22 away from the lower template 21.

[0022] The support rod 23 passes through the lower mold plate 21 and the lower mold base plate 22 and is fixedly connected to the bottom surface of the push plate 25. A spring 26 is provided on its outer sleeve, with its end abutting against the second side of the lower mold plate 21. When the lower mold moves towards the bottom end of the support rod 23, the spring 26 is compressed, and at the same time, the support rod 23 pushes the push plate 25 forward.

[0023] The top of the sliding column 24 is provided with a lower mold base 27 that is adapted to the upper mold base 13. The lower mold base 27 has several through slots corresponding to the accommodating installation cavity. The lower mold protrusion 28 and the sliding top sleeve 29 are coaxially arranged in the through slots.

[0024] The lower mold protrusion 28 is located above the lower mold base 27 and can be inserted into the molding cavity 16 to form an injection molding cavity. During insertion, the top end of the lower mold protrusion 28 aligns with the upper positioning member 15. The bottom end of the lower mold protrusion 28 extends to be fixedly connected to the lower mold base plate 22. The sliding top sleeve 29 slides around the lower mold protrusion 28, and its bottom end is fixedly connected to the push plate 25, moving synchronously to eject the molded injection part after injection molding.

[0025] The top surface of the lower mold base 27 is recessed to form an injection runner 210. The starting point of the injection runner 210 is connected to the injection channel 14, and the ending point is connected to the starting point of the injection channel 18. When the upper and lower molds are closed, the injection channel 14, the injection runner 210 and the injection channel 18 are connected to form a channel, so that the molten material flows from the injection nozzle to the molding cavity.

[0026] The push plate 25 is provided with pads 213 on both sides. The two ends of the pads 213 are fixedly connected to the lower mold base plate 22 and the lower mold base 27 respectively, so as to improve the support capacity between the lower mold base plate 22 and the lower mold base 27.

[0027] The upper mold base 13 is provided with several positioning grooves 19, and the lower mold base 27 is provided with several positioning pins 211 that are adapted to the positioning grooves 19. Through the cooperation of the positioning grooves 19 and the positioning pins 211, the upper and lower molds can be accurately connected.

[0028] The bottom surface of the upper mold base 13 is provided with at least two contact sensors 110 with several protrusions, and the lower mold base 27 is provided with contact grooves 212 corresponding to the contact sensors 110, so as to detect whether the upper and lower molds are completely closed.

[0029] The upper mold base 13 has several cooling channels. Both ends of the cooling channels are connected to the connecting pipes 111 set on the outer wall of the upper mold base 13 to connect to an external water cooling circulation device to achieve cooling of the injection molded parts.

[0030] The injection mold also includes a locking component 3, which is detachably connected to the upper mold plate 11 and the lower mold plate 21. The upper mold plate 11 and the lower mold plate 21 have screw holes on their sides, and are detachably connected to the locking component 3 via bolts. The locking component 3 connects the upper and lower molds together, facilitating storage and transportation.

[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An injection mold, characterized in that, include: Upper mold and lower mold; The upper mold includes an upper template (11), a positioning plate (12) is fixedly connected to the first side of the upper template (11), an upper mold base (13) is fixedly connected to the other side, and an injection channel (14) is provided in the center; the positioning plate (12) has a positioning hole concentric with the injection channel (14) in the center; the bottom surface of the upper mold base (13) has a plurality of accommodating and mounting cavities evenly distributed along the circumference of the injection channel (14), and an upper positioning component (15) and a molding cavity (16) covering the upper positioning component (15) are provided in the accommodating and mounting cavities. A connecting block (17) is fitted around the bottom outer edge of the molding cavity (16); there is a cavity between the molding cavity (16) and the upper positioning member (15), and there is a cavity between the connecting block (17) and the molding cavity (16); the bottom surface of the connecting block (17) is flush with the bottom surface of the upper mold base (13), and an injection channel (18) is provided inside it. The starting point of the injection channel (18) is located on the bottom surface of the connecting block (17), and the ending point is located on the inner wall of the connecting block (17); the bottom end of the injection channel (14) extends to the bottom surface of the upper mold base (13); The lower mold includes a lower template (21), a lower mold base plate (22) is provided on the first side of the lower template (21), and a support rod (23) is provided on the second side. A sliding column (24) and a push plate (25) movably sleeved outside the sliding column (24) are provided on the side of the lower mold base plate (22) away from the lower template (21). The support rod (23) passes through the lower template (21) and the lower mold base plate (22) and is fixedly connected to the bottom surface of the push plate (25). A spring (26) with its end abutting against the second side of the lower template (21) is provided on its outer sleeve. The sliding column (24) is provided with a lower mold base (27) at its top. The lower mold base (27) has several through slots corresponding to the accommodating installation cavity. A lower mold protrusion (28) and a sliding top sleeve (29) are coaxially arranged in the through slots. The lower mold protrusion (28) is located above the lower mold base (27) and can be inserted into the molding cavity (16) to form an injection cavity. Its bottom end extends to be fixedly connected to the lower mold base plate (22). The sliding top sleeve (29) is slidably sleeved outside the lower mold protrusion (28), and its bottom end is fixedly connected to the push plate (25). The lower mold base (27) has a recessed top surface to form an injection flow channel (210). The starting point of the injection flow channel (210) is connected to the injection channel (14), and the ending point is connected to the starting point of the injection channel (18).

2. An injection mold according to claim 1, characterized in that The upper mold base (13) is provided with a number of positioning grooves (19), and the lower mold base (27) is provided with a number of positioning posts (211) that are adapted to the positioning grooves (19).

3. An injection mold according to claim 1, wherein The bottom surface of the upper mold base (13) is provided with at least two contact sensors (110) with several protrusions, and the lower mold base (27) is provided with a contact groove (212) corresponding to the contact sensor (110).

4. An injection mold according to claim 1, wherein The push plate (25) is provided with pads (213) on both sides, and the two ends of the pads (213) are fixedly connected to the lower mold base plate (22) and the lower mold seat (27) respectively.

5. An injection mold according to claim 1, wherein The upper mold base (13) has several cooling channels, and the two ends of the cooling channels are connected to the connecting pipe (111) provided on the outer wall of the upper mold base (13).

6. An injection mold according to claim 1, wherein It also includes a locking element (3), which is detachably connected to the upper template (11) and the lower template (21) respectively.

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