Anti-deviation locking mechanism of injection mold for plastic parts of baby stroller

Abstract

The utility model relates to children's pushchair injection mold technical field discloses a kind of children's pushchair plastic part injection mold anti-deviation locking mechanism, including lower mould, the inside sliding connection of lower mould has upper mould, the lower surface of upper mould is fixedly connected with bevel gear rack, the outer wall of bevel gear rack is through the inside of lower mould and is provided with bevel gear block, the lower surface of bevel gear block is fixedly connected with slide base, the inner wall of slide base is slidingly connected with slide rail, the outer wall of slide rail is fixedly connected with fixed base, the inside fixed connection of fixed base has telescopic link one, the right side outer wall of bevel gear block is fixedly connected with spring one.In the utility model, through the mutual cooperation between bevel gear block, slide base, slide rail, fixed base, telescopic link one, spring one and bevel gear rack, the locking operation of lower mould and upper mould is simplified, the risk of human operation failure is reduced, the stability of mould closure is enhanced, simultaneously effectively eliminate fly edge and burr, to reduce product defect.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology for children's strollers, and in particular to an anti-deviation locking mechanism for injection molds of plastic parts for children's strollers. Background Technology

[0002] Plastic parts for strollers are components made of plastic that are used in the construction of the stroller. These plastic parts are widely used in various parts of the stroller, such as the frame. Their lightweight yet strong properties ensure the stability of the stroller structure while reducing overall weight, making them convenient for parents to carry and operate. Injection molds for stroller plastic parts are precision tools specifically used to manufacture these components. To ensure the mold remains precisely closed during high-pressure injection molding and to prevent slight displacement between the moving and fixed molds due to high-pressure impact of the molten plastic or equipment vibration, an anti-displacement locking mechanism is required.

[0003] The anti-deviation locking mechanism of the injection mold for plastic parts of children's strollers is a device that ensures precise alignment of the moving mold and the fixed mold during high-pressure injection molding through mechanical interlocking design. In the past, tie rods were usually used to pass through the upper and lower mold plates, and nuts were tightened with wrenches or other tools to make the upper and lower mold plates fit tightly together. This tightening of nuts is relatively cumbersome and prone to human error, which can affect the closure between the molds. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an anti-deviation locking mechanism for injection molds of plastic parts for children's strollers, which aims to improve the problem of locking the mold by tightening nuts, which is prone to human error.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A locking mechanism for preventing deviation in a plastic injection mold for a children's stroller includes a lower mold, an upper mold slidably connected inside the lower mold, a helical rack fixedly connected to the lower surface of the upper mold, an helical tooth block provided on the outer wall of the helical rack penetrating the interior of the lower mold, a handle fixedly connected to the outer wall of the helical tooth block, a slide block fixedly connected to the lower surface of the helical tooth block, a slide rail slidably connected to the inner wall of the slide block, a fixed seat fixedly connected to the outer wall of the slide rail, the outer wall of the fixed seat fixedly connected to the inner wall of the lower mold, a telescopic rod fixedly connected inside the fixed seat, the outer wall of the telescopic rod fixedly connected to the outer wall of the helical tooth block, a spring fixedly connected to the right outer wall of the helical tooth block, the outer wall of the spring fixedly connected to the outer wall of the fixed seat, and a buffer assembly provided inside the lower mold.

[0007] Preferably, the buffer assembly includes a second telescopic rod, the outer wall of which is fixedly connected to the inside of the lower mold, a circular plate is fixedly connected to the upper surface of the second telescopic rod, the upper surface of which is disposed on the lower surface of the helical rack, a second spring is fixedly connected to the lower surface of the circular plate, and the outer wall of the second spring is fixedly connected to the inner wall of the lower mold.

[0008] Preferably, a positioning block is slidably connected inside the lower mold, and the outer wall of the positioning block is slidably connected inside the upper mold.

[0009] Preferably, an L-shaped block is slidably connected inside the positioning block, and a connecting block is fixedly connected to the lower surface of the L-shaped block.

[0010] Preferably, a spring three is fixedly connected to the upper surface of the connecting block, and the outer wall of the spring three is fixedly connected to the inner top wall of the positioning block.

[0011] Preferably, a U-shaped frame is rotatably connected inside the connecting block, and a convex block is rotatably connected to the outer wall of the U-shaped frame.

[0012] Preferably, the outer wall of the convex block is slidably connected to the inside of the positioning block, and a sliding rod is fixedly connected to the right outer wall of the convex block.

[0013] Preferably, the outer wall of the slide rod is slidably connected to the inside of the positioning block, and the right outer wall of the slide rod is slidably connected to the inside of the lower mold.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the locking operation of the lower mold and the upper mold is simplified by the mutual cooperation between the helical tooth block, the slide block, the slide rail, the fixed seat, the telescopic rod, the spring and the helical toothed rack, which reduces the risk of human error, enhances the stability of mold closure, and effectively eliminates flash and burrs, thereby reducing product defects.

[0016] 2. In this utility model, the positioning block can be quickly installed and disassembled through the cooperation between the L-shaped block, connecting block, spring, U-shaped frame, convex block and slide rod, which facilitates cleaning or replacement, avoids anti-displacement failure caused by plastic residue or wear, and also improves the efficiency of mold changing and the flexibility of production. Attached Figure Description

[0017] Figure 1 This is a perspective view of an anti-deviation locking mechanism for a plastic injection mold of a children's stroller, as proposed in this utility model.

[0018] Figure 2 This is a partial structural diagram of the inclined rack of the anti-deviation locking mechanism for the injection mold of plastic parts of a children's stroller proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the helical tooth block of the anti-deviation locking mechanism for the injection mold of plastic parts for a children's stroller proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the internal structure of the positioning block of the anti-deviation locking mechanism for the injection mold of a plastic part of a children's stroller, as proposed in this utility model.

[0021] Legend:

[0022] 1. Lower mold; 2. Upper mold; 3. Helical rack; 4. Helical block; 5. Handle; 6. Slide; 7. Slide rail; 8. Fixed base; 9. Telescopic rod one; 10. Spring one; 11. Telescopic rod two; 12. Round plate; 13. Spring two; 14. Positioning block; 15. L-shaped block; 16. Connecting block; 17. Spring three; 18. U-shaped frame; 19. Convex block; 20. Slide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0024] Reference Figures 1-3 This utility model provides an embodiment of an anti-deviation locking mechanism for a plastic injection mold of a children's stroller, including a lower mold 1, an upper mold 2 slidably connected inside the lower mold 1, a helical rack 3 fixedly connected to the lower surface of the upper mold 2, the outer wall of the helical rack 3 penetrating the interior of the lower mold 1 and having a helical tooth block 4, a handle 5 fixedly connected to the outer wall of the helical tooth block 4, a slide block 6 fixedly connected to the lower surface of the helical tooth block 4, a slide rail 7 slidably connected to the inner wall of the slide block 6, a fixed seat 8 fixedly connected to the outer wall of the slide rail 7, the outer wall of the fixed seat 8 fixedly connected to the inner wall of the lower mold 1, a telescopic rod 9 fixedly connected inside the fixed seat 8, the outer wall of the telescopic rod 9 fixedly connected to the outer wall of the helical tooth block 4, a spring 10 fixedly connected to the right outer wall of the helical tooth block 4, the outer wall of the spring 10 fixedly connected to the outer wall of the fixed seat 8, and a buffer assembly provided inside the lower mold 1.

[0025] Specifically, the helical rack 3 and helical block 4 are equipped with matching helical teeth. When the helical rack 3 moves downward, it pushes the helical block 4 to move. Then, under the elastic force of the spring 10, the helical block 4 is pushed to limit the helical rack 3. The handle 5 is used to pull the helical block 4, so that the helical teeth of the helical block 4 leave the range of the helical teeth of the helical rack 3, which drives the slide block 6 to move, compresses the telescopic rod 9, and squeezes the spring 10, thereby releasing the helical rack 3. The slide rail 7 achieves the effect of offset limiting the movement of the slide block 6. The fixed seat 8 and the helical block 4 achieve the effect of fixing the telescopic rod 9 and the spring 10. The telescopic rod 9 achieves the effect of range limiting the movement of the helical block 4. The interior of the lower mold 1 achieves the effect of positioning the movement of the helical rack 3.

[0026] Reference Figure 3 The buffer assembly includes a telescopic rod 11, the outer wall of which is fixedly connected to the inside of the lower mold 1. A circular plate 12 is fixedly connected to the upper surface of the telescopic rod 11. The upper surface of the circular plate 12 is set on the lower surface of the helical rack 3. A spring 13 is fixedly connected to the lower surface of the circular plate 12. The outer wall of the spring 13 is fixedly connected to the inner wall of the lower mold 1.

[0027] Specifically, when the helical rack 3 moves downward, the lower surface of the helical rack 3 transmits power to the circular plate 12, thereby squeezing the second spring 13 and compressing the second telescopic rod 11. The elastic force of the second spring 13 buffers the movement of the helical rack 3, the second telescopic rod 11 limits the movement of the circular plate 12, and the second spring 13 supports the circular plate 12.

[0028] Reference Figure 1 The lower mold 1 has a slidably connected positioning block 14 inside, and the outer wall of the positioning block 14 is slidably connected to the inside of the upper mold 2.

[0029] Specifically, positioning blocks 14 are provided around the lower mold 1 to achieve the positioning effect of the upper mold 2.

[0030] Reference Figure 4 An L-shaped block 15 is slidably connected inside the positioning block 14, and a connecting block 16 is fixedly connected to the lower surface of the L-shaped block 15; a spring 17 is fixedly connected to the upper surface of the connecting block 16, and the outer wall of the spring 17 is fixedly connected to the inner top wall of the positioning block 14; a U-shaped frame 18 is rotatably connected inside the connecting block 16, and a convex block 19 is rotatably connected to the outer wall of the U-shaped frame 18; the outer wall of the convex block 19 is slidably connected to the inside of the positioning block 14, and a slide rod 20 is fixedly connected to the right outer wall of the convex block 19; the outer wall of the slide rod 20 is slidably connected to the inside of the positioning block 14, and the right outer wall of the slide rod 20 is slidably connected to the inside of the lower mold 1;

[0031] Specifically, an L-shaped block 15 is placed inside the positioning block 14. The surface of the positioning block 14 has no protrusions, so it will not affect the movement of the mold. The positioning block 14 restricts the movement of the L-shaped block 15. Pulling the L-shaped block 15 transmits power to the convex block 19 through the connecting block 16. The spring 17 is used to hold the connecting block 16, thereby supporting the slide rod 20 to slide into the lower mold 1 through the U-shaped frame 18 and the convex block 19. The U-shaped frame 18 has a short rod inside, which is used to rotate inside the connecting block 16 and the convex block 19. The positioning block 14 supports the movement of the convex block 19 and restricts the movement of the slide rod 20.

[0032] Working principle: When using this mechanism, the upper mold 2 is moved towards the lower mold 1. Under the action of the positioning block 14, the movement of the upper mold 2 is positioned. When the lower surface of the upper mold 2 is in contact with the upper surface of the lower mold 1, the positioning block 14 prevents the upper mold 2 from shifting. As a result, the upper mold 2 drives the helical rack 3 to move downward. The outer wall of the helical rack 3 slides into the interior of the lower mold 1. When it contacts the helical tooth block 4, the helical teeth of the helical rack 3 and the helical tooth block 4 push the helical rack 3 to move to the right, causing the slide block 6 to slide on the outer wall of the slide rail 7, compressing the telescopic rod 9. Under the elastic force of the spring 10, the helical tooth block 4 is pressed against the helical rack 3 to limit its movement, thereby locking the lower mold 1 and the upper mold 2. The helical rack 3 then moves downward. When the circular plate 12, the telescopic rod 11 and the spring 13 are used to buffer the movement of the helical rack 3, reducing the wear between the upper mold 2 and the lower mold 1. When the positioning block 14 needs to be maintained, the L-shaped block 15 is pulled to move the connecting block 16 upward, which squeezes the spring 17, thereby moving the U-shaped frame 18 towards the center of the connecting block 16, moving the convex block 19 to the left, and then moving the slide rod 20 to the left to slide out of the lower mold 1, no longer limiting the positioning block 14, making it easy to disassemble the positioning block 14. During use, this mechanism not only locks the lower mold 1 and the upper mold 2, improving the stability when the mold is closed and reducing the generation of flash, but also enables the positioning block 14 to be quickly installed and disassembled, facilitating maintenance or replacement.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A locking mechanism for preventing deviation in a plastic injection mold for a children's stroller, comprising a lower mold (1), characterized in that: The lower mold (1) is slidably connected to the upper mold (2). The lower surface of the upper mold (2) is fixedly connected to a helical rack (3). The outer wall of the helical rack (3) penetrates the interior of the lower mold (1) and is provided with a helical tooth block (4). The outer wall of the helical tooth block (4) is fixedly connected to a handle (5). The lower surface of the helical tooth block (4) is fixedly connected to a slide block (6). The inner wall of the slide block (6) is slidably connected to a slide rail (7). The outer wall of the slide rail (7) is fixedly connected to a fixed seat (8). The outer wall of the fixed seat (8) is fixedly connected to the inner wall of the lower mold (1). The interior of the fixed seat (8) is fixedly connected to a telescopic rod (9). The outer wall of the telescopic rod (9) is fixedly connected to the outer wall of the helical tooth block (4). The right outer wall of the helical tooth block (4) is fixedly connected to a spring (10). The outer wall of the spring (10) is fixedly connected to the outer wall of the fixed seat (8). The interior of the lower mold (1) is provided with a buffer assembly.

2. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 1, characterized in that: The buffer assembly includes a telescopic rod two (11), the outer wall of which is fixedly connected to the inside of the lower mold (1), a circular plate (12) is fixedly connected to the upper surface of the telescopic rod two (11), the upper surface of which is disposed on the lower surface of the helical rack (3), and a spring two (13) is fixedly connected to the lower surface of the circular plate (12), the outer wall of which is fixedly connected to the inner wall of the lower mold (1).

3. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 1, characterized in that: The lower mold (1) is slidably connected to a positioning block (14), and the outer wall of the positioning block (14) is slidably connected to the inside of the upper mold (2).

4. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 3, characterized in that: The positioning block (14) is internally slidably connected to an L-shaped block (15), and the lower surface of the L-shaped block (15) is fixedly connected to a connecting block (16).

5. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 4, characterized in that: A spring three (17) is fixedly connected to the upper surface of the connecting block (16), and the outer wall of the spring three (17) is fixedly connected to the inner top wall of the positioning block (14).

6. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 4, characterized in that: The connecting block (16) is rotatably connected to a U-shaped frame (18), and the outer wall of the U-shaped frame (18) is rotatably connected to a convex block (19).

7. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 6, characterized in that: The outer wall of the convex block (19) is slidably connected to the inside of the positioning block (14), and a slide rod (20) is fixedly connected to the right outer wall of the convex block (19).

8. The anti-deviation locking mechanism for injection molds of plastic parts for children's strollers according to claim 7, characterized in that: The outer wall of the slide rod (20) is slidably connected to the inside of the positioning block (14), and the right outer wall of the slide rod (20) is slidably connected to the inside of the lower mold (1).

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