Steel mesh plastic part injection mold with ejection positioning mechanism

Abstract

The utility model relates to the technical field of injection molds, and provides a steel mesh plastic part injection mold with an ejection positioning mechanism, which comprises a lower fixing plate, an upper fixing plate, a lower mold assembly and an upper mold assembly, the lower mold assembly is arranged on the lower fixing plate, the upper mold assembly is arranged on the upper fixing plate, the lower mold assembly comprises a lower mold unit and an ejection positioning unit, the ejection positioning unit comprises an ejection plate, a mounting plate and an ejection positioning needle, the ejection plate is arranged below the lower mold unit in a lifting manner, the mounting plate is movably arranged below the lower mold unit, and the ejection positioning needle is arranged below the lower mold unit. The ejection positioning needle is arranged on the mounting plate and penetrates through the lower mold unit, the upper end of the ejection positioning needle is a positioning end, and the lower mold unit, the upper mold assembly and the ejection positioning needle form an injection molding space. By means of the technical scheme, the problems that in the prior art, steel mesh positioning of a steel mesh injection molding part in an injection mold is inaccurate, and demolding is inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a steel mesh plastic injection mold with an ejection positioning mechanism. Background Technology

[0002] In the field of injection molding, some injection molded parts have embedded steel mesh, which requires the steel mesh to be pre-positioned in the injection molding cavity. However, the positioning stability of the steel mesh is often poor, resulting in poor accuracy after injection molding and difficulty in guaranteeing quality. Furthermore, after the injection molded parts are formed, they also need to be demolded and ejected. Therefore, an injection mold structure that can take into account both steel mesh positioning and demolding is needed to achieve injection molding. Utility Model Content

[0003] This utility model proposes a steel mesh injection mold with an ejection positioning mechanism, which solves the problems of inaccurate steel mesh positioning and inconvenient demolding in the prior art.

[0004] The technical solution of the utility model is as follows:

[0005] A steel mesh plastic injection mold with an ejection positioning mechanism, the injection mold including a lower fixed plate, an upper fixed plate, a lower mold assembly and an upper mold assembly, the lower mold assembly being disposed on the lower fixed plate and the upper mold assembly being disposed on the upper fixed plate, wherein the lower mold assembly includes a lower mold unit and an ejection positioning unit, the ejection positioning unit including a push plate, a mounting plate and an ejection positioning pin, the push plate being vertically and vertically disposed below the lower mold unit, the mounting plate being movably disposed below the lower mold unit, the ejection positioning pin being disposed on the mounting plate and passing through the lower mold unit, the upper end of the ejection positioning pin being a positioning end, the lower mold unit, the upper mold assembly and the ejection positioning pin forming an injection space.

[0006] The push plate is provided with a push protrusion, which is used to abut against the mounting plate. A spring is provided between the push plate and the lower mold unit to reset the push plate.

[0007] The bottom surface of the lower mold unit is provided with a clearance groove, the mounting plate is movably disposed in the clearance groove, and the side wall of the clearance groove is provided with a stop block, the stop block abuts against the side wall of the mounting plate and makes the mounting plate only move within the clearance groove.

[0008] The upper mold assembly includes an upper mold unit and an injection port. The upper mold unit abuts against the lower mold unit and closes the mold. The injection port is disposed on the upper mold unit and is used to communicate with the injection space.

[0009] Both the upper mold unit and the lower mold unit are provided with cooling channels.

[0010] The working principle and beneficial effects of this utility model are as follows:

[0011] This utility model discloses a steel mesh plastic injection mold with an ejector positioning mechanism. The mold structure is as follows: a lower mold assembly is installed on a lower fixed plate, and an upper mold assembly is installed on an upper fixed plate. After the lower mold assembly and the upper mold assembly are closed, injection molding is performed. Further, the lower mold assembly comprises a lower mold unit and an ejector positioning unit. The ejector positioning unit specifically includes a push plate, a mounting plate, and an ejector positioning pin. The push plate is installed below the lower mold unit and can be raised and lowered. The mounting plate is installed on the lower mold unit and has the freedom of movement. The ejector positioning pin is installed on the mounting plate and ejects the positioning pin. The ejector pin passes through the lower mold unit, and the upper end of the ejector pin extends out of the lower mold unit as the positioning end, which can locate the position of the steel mesh and improve the injection accuracy. The ejector pin, the upper mold assembly, and the lower mold unit form a closed injection space. After injection molding is completed, after the mold is opened, the push plate under the lower mold unit moves upward and abuts against the mounting plate, pushing it to move. The ejector pin, driven by the mounting plate, ejects the steel mesh plastic part, realizing demolding after injection molding. Through the above solution, the problems of inaccurate steel mesh positioning and inconvenient demolding of steel mesh injection molded parts in the existing technology are solved. Attached Figure Description

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] In the diagram: 1. Lower fixing plate, 2. Upper fixing plate, 3. Lower mold unit, 4. Push plate, 5. Mounting plate, 6. Ejector positioning pin, 7. Push protrusion, 8. Relief groove, 9. Stop block, 10. Upper mold unit, 11. Injection port, 12. Cooling channel. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figures 1-2As shown in the figure, this embodiment proposes a steel mesh plastic injection mold with an ejection positioning mechanism. The injection mold includes a lower fixed plate 1, an upper fixed plate 2, a lower mold assembly, and an upper mold assembly. The lower mold assembly is disposed on the lower fixed plate 1, and the upper mold assembly is disposed on the upper fixed plate 2. The lower mold assembly includes a lower mold unit 3 and an ejection positioning unit. The ejection positioning unit includes a push plate 4, a mounting plate 5, and an ejection positioning pin 6. The push plate 4 is vertically and vertically disposed below the lower mold unit 3. The mounting plate 5 is movably disposed below the lower mold unit 3. The ejection positioning pin 6 is disposed on the mounting plate 5 and passes through the lower mold unit 3. The upper end of the ejection positioning pin 6 is a positioning end. The lower mold unit 3, the upper mold assembly, and the ejection positioning pin 6 form an injection space.

[0018] This embodiment discloses a steel mesh plastic injection mold with an ejector positioning mechanism. The mold structure is as follows: a lower mold assembly is installed on a lower fixed plate 1, and an upper mold assembly is installed on an upper fixed plate 2. After the lower mold assembly and the upper mold assembly are closed, injection molding is performed. Further, the lower mold assembly consists of a lower mold unit 3 and an ejector positioning unit. The ejector positioning unit specifically consists of a push plate 4, a mounting plate 5, and an ejector positioning pin 6. The push plate 4 is installed below the lower mold unit 3 and can be raised and lowered. The mounting plate 5 is installed on the lower mold unit 3 and has the freedom of movement. The ejector positioning pin 6 is installed on the mounting plate 5 and ejects the positioning pin. The ejector pin 6 passes through the lower mold unit 3, and the upper end of the ejector pin 6 protrudes from the lower mold unit 3 as a positioning end, which can locate the position of the steel mesh, improving injection molding accuracy. The ejector pin 6, the upper mold assembly, and the lower mold unit 3 form a closed injection molding space. After injection molding is completed and the mold is opened, the push plate 4 below the lower mold unit 3 moves upward and abuts against the mounting plate 5, pushing it to move. The ejector pin 6, driven by the mounting plate 5, pushes out the steel mesh plastic part, realizing demolding after injection molding. Through the above solution, the problems of inaccurate positioning of the steel mesh injection molded part and inconvenient demolding in the prior art are solved. It should be noted that there are multiple ways to lift the push plate 4. For example, it can be driven to move and lift by a hydraulic cylinder.

[0019] The push plate 4 is provided with a push protrusion 7, which is used to abut against the mounting plate 5. A spring is provided between the push plate 4 and the lower mold unit 3 to reset the push plate 4.

[0020] Based on the above embodiments, a pusher plate 4 located below the lower mold unit 3 is provided with a pusher protrusion 7. The pusher protrusion 7 can be implemented by bolts or a structure for fixing metal blocks with bolts, so as to facilitate contact with the bottom of the mounting plate 5 and facilitate adjustment of the pusher height. A spring is also provided between the lower mold unit 3 and the pusher plate 4, so as to facilitate the reset of the pusher plate 4.

[0021] The bottom surface of the lower mold unit 3 is provided with a relief groove 8, the mounting plate 5 is movably disposed in the relief groove 8, and the side wall of the relief groove 8 is provided with a stop block 9, the stop block 9 abuts against the side wall of the mounting plate 5 and makes the mounting plate 5 only move within the relief groove 8.

[0022] Based on the above embodiments, a clearance groove 8 is provided at the bottom of the lower mold unit 3, thereby providing moving space for the mounting plate 5, reducing the size of the mold, and reducing manufacturing costs. A stop block 9 is provided on the side wall of the clearance groove 8, and the stop block 9 abuts against the side wall of the mounting plate 5, thereby preventing the mounting plate 5 from sliding out of the clearance groove 8. The mounting plate 5 only has space to slide within the clearance groove 8.

[0023] The upper mold assembly includes an upper mold unit 10 and an injection port 11. The upper mold unit 10 abuts against the lower mold unit 3 and closes the mold. The injection port 11 is disposed on the upper mold unit 10 and is used to communicate with the injection space.

[0024] Based on the above embodiments, the upper mold assembly consists of an upper mold unit 10 and an injection port 11. The upper mold unit 10 and the lower mold unit 3 form a closed mold, and the injection port 11 is used to inject molding material into the accommodation space.

[0025] Cooling channels 12 are provided on both the upper mold unit 10 and the lower mold unit 3.

[0026] Based on the above embodiments, both the upper mold unit 10 and the lower mold unit 3 are provided with cooling channels 12, which circulate and cool the material by introducing coolant, thereby accelerating the molding speed.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A steel mesh plastic injection mold with an ejection and positioning mechanism, characterized in that, The injection mold includes a lower fixed plate (1), an upper fixed plate (2), a lower mold assembly, and an upper mold assembly. The lower mold assembly is disposed on the lower fixed plate (1), and the upper mold assembly is disposed on the upper fixed plate (2). The lower mold assembly includes a lower mold unit (3) and an ejector positioning unit. The ejector positioning unit includes a push plate (4), a mounting plate (5), and an ejector positioning pin (6). The push plate (4) is movable and disposed below the lower mold unit (3). The mounting plate (5) is movable and disposed below the lower mold unit (3). The ejector positioning pin (6) is disposed on the mounting plate (5) and passes through the lower mold unit (3). The upper end of the ejector positioning pin (6) is the positioning end. The lower mold unit (3), the upper mold assembly, and the ejector positioning pin (6) form an injection space.

2. The steel mesh injection mold with an ejection positioning mechanism according to claim 1, characterized in that, The push plate (4) is provided with a push protrusion (7), which is used to abut against the mounting plate (5). A spring is provided between the push plate (4) and the lower mold unit (3) to reset the push plate (4).

3. The steel mesh injection mold with an ejection positioning mechanism according to claim 1, characterized in that, The bottom surface of the lower mold unit (3) is provided with a relief groove (8), and the mounting plate (5) is movably disposed in the relief groove (8). The side wall of the relief groove (8) is provided with a stop block (9), which abuts against the side wall of the mounting plate (5) and makes the mounting plate (5) only move within the relief groove (8).

4. The steel mesh injection mold with an ejection positioning mechanism according to claim 1, characterized in that, The upper mold assembly includes an upper mold unit (10) and an injection port (11). The upper mold unit (10) abuts against the lower mold unit (3) and closes the mold. The injection port (11) is disposed on the upper mold unit (10) and is used to communicate with the injection space.

5. The steel mesh injection mold with an ejection positioning mechanism according to claim 4, characterized in that, Cooling channels (12) are provided on both the upper mold unit (10) and the lower mold unit (3).

Images