Four-mold-opening shoe sole injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a four-part mold sole injection mold which comprises a four-part mold main body and a movable mold plate arranged on the four-part mold main body, a plurality of through holes are formed in the movable mold plate, and a material ejecting assembly comprises a servo motor fixedly installed on the side face of the movable mold plate. A lead screw is fixedly installed at the tail end of an output shaft of the servo motor, a fixing rod is fixedly installed on a shell of the servo motor, a guide rail is fixedly installed at the end of the fixing rod, the lead screw is in threaded connection with a threaded sleeve, the guide rail is sleeved with the threaded sleeve, the threaded sleeve is in sliding connection with the guide rail, and the threaded sleeve is in sliding connection with the through hole. A sliding groove is formed in the side face of the guide rail, an arc-shaped groove is formed in a sleeve body at the rear end of the threaded sleeve, a fastening screw is connected into the arc-shaped groove in a threaded mode, a limiting protruding column is fixedly installed at the end of the fastening screw, and the limiting protruding column is inserted into the sliding groove and connected with the sliding groove in a sliding mode. According to the utility model, the ejection demolding operation is convenient, and the occupied space is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a four-opening shoe sole injection mold. Background Technology

[0002] Injection molding is a widely used molding technology, especially in the field of shoe sole manufacturing. Injection molds are key components in the injection molding process. Through specific mold design, shoe soles with complex shapes and structures can be manufactured. There are many types of shoe sole injection molds on the market. Traditional shoe sole molds can generally only achieve unidirectional or bidirectional mold opening, which is insufficient when manufacturing shoe soles with certain special structures, such as shoe soles with transverse perforations.

[0003] To address the aforementioned issues and improve the flexibility and production efficiency of shoe sole injection molds, four-part molds for shoe soles have emerged. These molds can open in four directions or complete four mold-separation operations, enabling the manufacture of shoe soles with more complex structures, such as soles with lateral perforations, thereby further improving production efficiency and product quality.

[0004] There are many types of four-opening shoe sole injection molds on the market. Most of these molds are equipped with an ejection mechanism to push the finished shoe sole out of the molding cavity, completing the demolding process. However, these ejection mechanisms typically use cylinders to eject the material. Cylinders are relatively large, occupying considerable space and making it difficult to install other electrical equipment. Furthermore, using cylinders requires extensive piping and wiring, which also takes up space. In severe cases, the opening and closing of the mold can damage the piping and wiring, affecting the mold's performance. Therefore, we propose a four-opening shoe sole injection mold. Utility Model Content

[0005] The purpose of this invention is to provide a four-part injection mold for shoe soles to address the deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A four-part mold for shoe sole injection includes a four-part mold body and a movable template disposed on the four-part mold body. The movable template has multiple through holes communicating with the outside. Multiple ejector components are disposed on the movable template. Each ejector component includes a servo motor fixedly mounted on the side of the movable template. A lead screw is fixedly mounted at the end of the output shaft of the servo motor. A fixed rod parallel to the lead screw is fixedly mounted on the housing of the servo motor. A guide rail is fixedly mounted at the end of the fixed rod. A threaded sleeve is threadedly connected to the lead screw. The threaded sleeve is sleeved on the guide rail and slidably connected to the guide rail. The threaded sleeve is located in the through holes and slidably connected to the through holes.

[0008] Preferably, a mounting base is fixedly installed on the housing of the servo motor, and the mounting base is fixedly installed on the front side of the moving template.

[0009] Preferably, the front projections of the lead screw and the guide rail are both located inside the front projection of the threaded sleeve, and the size of the threaded sleeve is adapted to the size of the through hole.

[0010] Preferably, the end of the threaded sleeve away from the lead screw is not connected to the outside, and a rectangular groove is provided inside the cylinder of the threaded sleeve along the length direction of the threaded sleeve. The guide rail is located in the rectangular groove and is slidably connected to the rectangular groove.

[0011] Preferably, the rear end of the rectangular groove is not connected to the outside, and the size of the guide rail is adapted to the size of the rectangular groove.

[0012] Preferably, the side of the guide rail is provided with a sliding groove along the length of the guide rail, and the rear end of the threaded sleeve is provided with an arc-shaped groove. A fastening screw is threaded into the arc-shaped groove, and a limiting protrusion is fixedly installed at the end of the fastening screw. The limiting protrusion is inserted into the sliding groove and slidably connected to the sliding groove.

[0013] Preferably, the two ends of the slide are not connected to the outside world, and the rear side wall of the arc-shaped groove is provided with a threaded hole that communicates with the rectangular groove, and the fastening screw is threadedly connected to the threaded hole.

[0014] Preferably, a cap is fixedly installed at the other end of the fastening screw, and the cap has a cross groove that communicates with the outside. The thickness of the cap is less than the depth of the arc groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, through the setting of the ejector component, ensures that during use, the servo motor can work to drive the lead screw to rotate, which in turn drives the threaded sleeve to move outward, thereby using the threaded sleeve to eject the plastic part in the molding cavity of the four-open mold body and complete the demolding operation. In addition, when using servo motor drive, there is no need to lay out pipes, and the servo motor is small in size, which can reduce the space occupation, achieving the effect of facilitating ejection and demolding and reducing space occupation.

[0017] 2. This utility model uses a limiting protrusion that slides within a groove to limit the inward and outward movement of the threaded sleeve. Additionally, after the threaded sleeve wears out, the fastening screws can be removed, and the ejector assembly can be taken out as a whole, thus achieving the effect of disassembling and replacing the threaded sleeve. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is an exploded structural diagram of the top material assembly of this utility model;

[0021] Figure 4 This is a partial structural schematic diagram of the present invention;

[0022] Figure 5 This utility model Figure 3 Enlarged view of point A in the middle;

[0023] The meanings of the labels in the diagram are as follows:

[0024] 1. Four-panel mold body; 10. Moving template; 11. Through hole;

[0025] 2. Top material assembly; 20. Servo motor; 201. Fixing base; 21. Lead screw; 22. Fixing rod; 23. Guide rail; 231. Slide groove; 24. Threaded sleeve; 241. Rectangular groove; 25. Arc groove; 251. Threaded hole; 26. Fastening screw; 27. Cap; 271. Cross groove; 28. Limiting protrusion. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model provides a technical solution: a four-opening mold for shoe sole injection molding, including a four-opening mold body 1 and a movable template 10 disposed on the four-opening mold body 1. The movable template 10 has multiple through holes 11 communicating with the outside, and corresponding molding chambers are disposed within the movable template 10. After mold closing, the plastic part is formed within these molding chambers. The through holes 11 communicate with the molding chambers within the movable template 10. Multiple ejector components 2 are disposed on the movable template 10. Each ejector component 2 includes a servo motor 20 fixedly mounted on the side of the movable template 10. A lead screw 21 is fixedly mounted at the end of the output shaft of the servo motor 20. A fixed rod 22 parallel to the lead screw 21 is fixedly installed on the housing of the motor 20. A guide rail 23 is fixedly installed at the end of the fixed rod 22. A threaded sleeve 24 is threadedly connected to the lead screw 21. The threaded sleeve 24 is sleeved on the guide rail 23 and slidably connected to the guide rail 23. The threaded sleeve 24 is located in the through hole 11 and slidably connected to the through hole 11. This ensures that when in use, the servo motor 20 can work to drive the lead screw 21 to rotate, which in turn drives the threaded sleeve 24 to move. This allows the threaded sleeve 24 to push the shoe sole plastic part in the molding cavity of the moving template 10 outward, completing the demolding operation.

[0028] In this embodiment, a mounting base 201 is fixedly installed on the housing of the servo motor 20. The mounting base 201 is fixedly installed on the front side of the moving template 10 by multiple fastening screws, which facilitates the fixing, installation and disassembly operations.

[0029] Specifically, the front projections of the lead screw 21 and the guide rail 23 are both located inside the front projection of the threaded sleeve 24. The size of the threaded sleeve 24 is adapted to the size of the through hole 11, so that the threaded sleeve 24 can be inserted into the through hole 11 normally and stably.

[0030] Furthermore, the end of the threaded sleeve 24 away from the lead screw 21 is not connected to the outside. A rectangular groove 241 is provided inside the cylinder of the threaded sleeve 24 along the length of the threaded sleeve 24. The guide rail 23 is located in the rectangular groove 241 and is slidably connected to the rectangular groove 241. The rear end of the rectangular groove 241 is not connected to the outside. The size of the guide rail 23 is adapted to the size of the rectangular groove 241, so as to guide the movement of the threaded sleeve 24.

[0031] In addition, a sliding groove 231 is provided on the side of the guide rail 23 along the length of the guide rail 23, and an arc-shaped groove 25 is provided on the rear end of the threaded sleeve 24. A fastening screw 26 is threadedly connected in the arc-shaped groove 25, and a limiting protrusion 28 is fixedly installed at the end of the fastening screw 26. The limiting protrusion 28 is inserted into the sliding groove 231 and slidably connected with the sliding groove 231, so as to limit the forward and backward movement distance of the threaded sleeve 24 and prevent the threaded sleeve 24 from falling off the end of the screw 21.

[0032] It is worth noting that the two ends of the slide 231 are not connected to the outside world. The rear side wall of the arc groove 25 is provided with a threaded hole 251 that communicates with the rectangular groove 241. The fastening screw 26 is threadedly connected to the threaded hole 251, which facilitates the tightening operation of the fastening screw 26.

[0033] It is worth noting that a cap 27 is fixedly installed on the other end of the fastening screw 26. The cap 27 has a cross groove 271 that communicates with the outside. The thickness of the cap 27 is less than the depth of the arc groove 25, which makes it easier to rotate the cap 27 with a screwdriver.

[0034] When using the four-opening shoe sole injection mold of this utility model, the servo motor 20 is connected to an external power source and made to work. When the servo motor 20 works, its output shaft rotates clockwise, driving the lead screw 21 to rotate clockwise. The clockwise rotation of the lead screw 21 drives the threaded sleeve 24, which is threaded to it, to move outward. The threaded sleeve 24 extends from the through hole 11 into the molding chamber inside the moving template 10, thereby ejecting the shoe sole plastic part from the molding chamber and completing the demolding operation. After demolding, the servo motor 20 continues to work, and its output shaft rotates counterclockwise, driving the lead screw 21 to rotate counterclockwise. The counterclockwise rotation of the lead screw 21 drives the threaded sleeve 24 to retract into the through hole 11.

[0035] When the threaded sleeve 24 is worn, unscrew the fastening screw on the fixed seat 201, and then pull the ejector assembly 2 outward as a whole. After pulling it out, unscrew the fastening screw 26. At this time, the limiting protrusion 28 is no longer in the slide groove 231 for limiting. As the servo motor 20 works, it can drive the threaded sleeve 24 to fall from the end of the lead screw 21. Then, the damaged threaded sleeve 24 can be replaced.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A four-part mold for shoe sole injection molding, comprising a four-part mold body (1) and a movable template (10) disposed on the four-part mold body (1), characterized in that: The moving template (10) is provided with multiple through holes (11) that communicate with the outside. The moving template (10) is provided with multiple ejector components (2). The ejector component (2) includes a servo motor (20) fixedly installed on the side of the moving template (10). A lead screw (21) is fixedly installed at the end of the output shaft of the servo motor (20). A fixed rod (22) parallel to the lead screw (21) is fixedly installed on the housing of the servo motor (20). A guide rail (23) is fixedly installed at the end of the fixed rod (22). A threaded sleeve (24) is threadedly connected to the lead screw (21). The threaded sleeve (24) is sleeved on the guide rail (23) and slidably connected to the guide rail (23). The threaded sleeve (24) is located in the through hole (11) and slidably connected to the through hole (11).

2. The four-opening shoe sole injection mold according to claim 1, characterized in that: A mounting base (201) is fixedly installed on the housing of the servo motor (20), and the mounting base (201) is fixedly installed on the front side of the moving template (10).

3. The four-opening shoe sole injection mold according to claim 1, characterized in that: The front projections of the lead screw (21) and the guide rail (23) are both located inside the front projection of the threaded sleeve (24), and the size of the threaded sleeve (24) is adapted to the size of the through hole (11).

4. The four-opening shoe sole injection mold according to claim 1, characterized in that: The end of the threaded sleeve (24) away from the lead screw (21) is not connected to the outside. The inside of the threaded sleeve (24) is provided with a rectangular groove (241) arranged along the length direction of the threaded sleeve (24). The guide rail (23) is located in the rectangular groove (241) and is slidably connected to the rectangular groove (241).

5. The four-opening shoe sole injection mold according to claim 4, characterized in that: The rear end of the rectangular groove (241) is not connected to the outside world, and the size of the guide rail (23) is adapted to the size of the rectangular groove (241).

6. The four-opening shoe sole injection mold according to claim 5, characterized in that: The guide rail (23) has a sliding groove (231) on its side along the length of the guide rail (23). The rear end of the threaded sleeve (24) has an arc groove (25). A fastening screw (26) is threaded into the arc groove (25). A limiting protrusion (28) is fixedly installed at the end of the fastening screw (26). The limiting protrusion (28) is inserted into the sliding groove (231) and slidably connected to the sliding groove (231).

7. The four-opening shoe sole injection mold according to claim 6, characterized in that: The two ends of the slide (231) are not connected to the outside. The rear side wall of the arc groove (25) is provided with a threaded hole (251) that communicates with the rectangular groove (241). The fastening screw (26) is threadedly connected to the threaded hole (251).

8. The four-opening shoe sole injection mold according to claim 7, characterized in that: The other end of the fastening screw (26) is fixedly installed with a cap (27), and the cap (27) is provided with a cross groove (271) that communicates with the outside. The thickness of the cap (27) is less than the depth of the arc groove (25).

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