Secondary slider down hill core pulling mechanism

Abstract

The utility model discloses a kind of secondary slider downhill core-pulling mechanism, its composition includes upper die and lower die, core-pulling device is provided with on one side of mould, the bottom surface of upper die is provided with the limiting device matched with core-pulling device;Core-pulling device, including middle slider, the same structure is provided with side slider in the two sides of middle slider, side slider and fixed slider are movably connected between, the bottom of middle slider and fixed slider is provided with slide rail, slide rail is inclined structure, higher in the side close to mould, the upper surface of side slider and middle slider is all provided with the recess matched with the protruding portion on workpiece, middle inclined hole is provided on middle slider, long strip shape side inclined hole is provided on side slider;Limiting device, including middle inclined column matched with middle inclined hole, the two sides of middle inclined column are provided with side inclined column matched with side inclined hole.The utility model will not damage workpiece when core-pulling, facilitate the batch production of workpiece, beneficial to improve production efficiency, reduce production cost.

Description

Technical Field

[0001] This utility model relates to automotive parts production molds, and in particular to a secondary slider downhill core-pulling mechanism. Background Technology

[0002] Existing car door handles include some that are hidden, some that are completely retracted into the car body, and some that are hidden door handles like those in Xiaomi cars. Figure 4 To prevent the hand from slipping when opening the car door, this structure has a raised part on the inner surface of the door handle. Figure 5 Because of the protrusion and the step on the door handle, the step and protrusion restrict the core-pulling action. During production using a mold, the protrusion can be damaged during core-pulling. Therefore, in the past, this type of door wrench was produced as two parts: the door handle body and the protrusion, and then the two were assembled together. This was inefficient and did not help to improve production efficiency or reduce production costs. Summary of the Invention

[0003] This invention provides a secondary slider downhill core-pulling mechanism to solve the above-mentioned problems.

[0004] To solve the above problems, the technical solution of this utility model is: a secondary slider downhill core pulling mechanism, which includes an upper mold and a lower mold. The lower mold is provided with a core pulling device on one side of the mold, and the bottom surface of the upper mold is provided with a limiting device that cooperates with the core pulling device.

[0005] The core-pulling device includes a central slider, with side sliders of the same structure on both sides of the central slider. The side sliders are movably connected to a fixed slider. The bottom of the central slider and the fixed slider are provided with slide rails. The slide rails are inclined and the side closer to the mold is higher. The upper surfaces of the side sliders and the central slider are provided with grooves that mate with protrusions on the workpiece. The central slider is provided with a central inclined hole, and the side sliders are provided with elongated side inclined holes.

[0006] The limiting device includes a central inclined column that mates with a central inclined hole, and side inclined columns that mate with side inclined holes are provided on both sides of the central inclined column.

[0007] As a further improvement of this utility model, a spring is provided between the side slider and the fixed slider.

[0008] As a further improvement of this utility model, the limiting device further includes a central limiting block and a side limiting block, the tail of the central slider and the fixed slider is an inclined surface, and the side of the central limiting block and the side limiting block that connects with the central slider and the fixed slider is also an inclined surface.

[0009] As a further improvement of this utility model, guide posts are provided at the four corners of the lower mold, and guide holes that cooperate with the guide posts are provided at the four corners of the upper mold.

[0010] As a further improvement of this utility model, the length of the lateral inclined column is longer than the length of the central inclined column.

[0011] As a further improvement of this utility model, the middle slider is an isosceles trapezoidal structure with its upper base close to the mold, and the side slider is also a trapezoidal structure with its upper base far away from the mold.

[0012] The beneficial effects of this utility model are:

[0013] 1. The slide rail of this utility model has an inclined structure. Therefore, during core pulling, the middle slide and the side slide will first lower their height so that the groove on their upper surface will disengage from the protrusion of the workpiece, and then completely detach from the workpiece. Therefore, the workpiece will not be damaged during core pulling, which facilitates mass production of the workpiece, improves production efficiency, and reduces production costs.

[0014] 2. In this utility model, the middle slider is designed as a trapezoidal structure. When it moves backward and descends, the side slider will move towards the middle under the action of the spring, thereby avoiding the door handle step and making the side slider easier to pull out. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the upper mold structure;

[0017] Figure 3 This is a schematic diagram of the lower mold structure;

[0018] Figure 4 This is a schematic diagram of the workpiece's structure;

[0019] Figure 5 yes Figure 4 A cross-sectional structural diagram.

[0020] In the diagram: Upper mold 1, Lower mold 2, Middle limit block 3, Middle inclined pillar 4, Side limit block 5, Side inclined pillar 6, Guide pillar 7, Side slider 8, Fixed slider 9, Middle slider 10, Side inclined hole 11, Guide hole 12, Spring 13, Middle inclined hole 14, Workpiece 15, Step 16, Protrusion 17, Mold 18. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] exist Figures 1 to 5In the present invention, a secondary slider downward slope core pulling mechanism is provided, comprising an upper mold 1 and a lower mold 2. The lower mold 2 is provided with a core pulling device on one side of the mold 18, and the bottom surface of the upper mold 1 is provided with a limiting device that cooperates with the core pulling device.

[0023] The core-pulling device includes a central slider 10, with side sliders 8 of the same structure on both sides of the central slider 10. The side sliders 8 are movably connected to a fixed slider 9. The bottom of the central slider 10 and the fixed slider 9 are provided with slide rails. The slide rails are inclined and the side closer to the mold 18 is higher. The upper surfaces of the side sliders 8 and the central slider 10 are provided with grooves that cooperate with the protrusions 17 on the workpiece 15. The central slider 10 is provided with a central oblique hole 14, and the side sliders 8 are provided with elongated oblique side holes 11.

[0024] The limiting device includes a central inclined post 4 that mates with the central inclined hole 14, and side inclined posts 6 that mate with the side inclined holes 11 are provided on both sides of the central inclined post 4.

[0025] Using this solution, when the mold is opened, the central inclined column 4 will drive the central slider 10 to move outward first; since the side inclined hole 11 is long and narrow, the side inclined column 6 will have a period of idle stroke. At this time, the fixed slider 9 will not move outward temporarily. After the central slider 9 moves back, the side inclined column 6 will drive the side slider 8 to move outward. Since the slide rail is inclined, after the central slider 10 moves back, the side sliders 8 on both sides will move towards the middle, avoiding the side sliders 8 being blocked by the step 16 on the door handle 15 when moving outward.

[0026] Furthermore, a spring 13 is provided between the side slider 8 and the fixed slider 9.

[0027] Using this scheme, after the middle slider 10 moves back, the side slider 8 moves towards the center faster under the action of the spring 13.

[0028] Furthermore, the limiting device also includes a central limiting block 3 and a side limiting block 5. The tails of the central slider 10 and the fixed slider 9 are inclined surfaces, and the surfaces of the central limiting block 3 and the side limiting block 5 that connect with the central slider 10 and the fixed slider 9 are also inclined surfaces.

[0029] With this solution, during mold closing, the center limit block 3 and the side limit block 5 can better limit the center slider 10 and the fixed slider 9, preventing them from moving outwards during operation after mold closing.

[0030] Furthermore, guide posts 7 are provided at the four corners of the lower mold 2, and guide holes 12 that cooperate with the guide posts 7 are provided at the four corners of the upper mold 1.

[0031] This solution allows for better guidance of the upper mold 1 after mold closing.

[0032] Furthermore, the length of the lateral inclined column 6 is longer than the length of the central inclined column 4.

[0033] This design allows for better control of the outward movement of the middle slider 10 during mold opening.

[0034] Furthermore, the middle slider 10 has an isosceles trapezoidal structure with its upper base close to the mold 18, and the side slider 8 also has a trapezoidal structure with its upper base far from the mold 18.

[0035] With this design, after the middle slider 10 retracts, the side slider 8 can move towards the center more effectively under the action of the spring 13.

[0036] During mold opening, the central inclined column 4 on the upper mold 1 pulls open the central slider 10. Since the slide rail is inclined, the central slider 10 is pulled out diagonally downwards. Simultaneously, the side sliders 8 on both sides, under the action of the spring 13, return to their original position towards the central slider 10, achieving the purpose of both the side sliders 8 and the central slider 10 disengaging from the protrusion 17 on the workpiece 15. At the same time, because the side sliders 8 return to their original position under the action of the spring, they avoid contact with the step 16 on the workpiece 15 during core pulling. The upper mold 1 continues to open, and the side inclined column 6 on the upper mold 1 pulls open the fixed slider 9. The side sliders 8 connected to the fixed slider 9 are pulled out, completing the mold opening and core pulling actions.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A secondary slide core-drawing mechanism for a downhill core-pulling mechanism, which consists of an upper die (1) and a lower die (2), characterized in that: The lower mold (2) is provided with a core-pulling device on one side of the mold (18), and the bottom surface of the upper mold (1) is provided with a limiting device that cooperates with the core-pulling device. The core-pulling device includes a central slider (10), and side sliders (8) with the same structure are provided on both sides of the central slider (10). The side sliders (8) are movably connected to the fixed slider (9). The bottom of the central slider (10) and the fixed slider (9) are provided with slide rails. The slide rails are inclined structures, with the side closer to the mold (18) being higher. The upper surfaces of the side sliders (8) and the central slider (10) are provided with grooves that cooperate with the protrusions (17) on the workpiece (15). The central slider (10) is provided with a central oblique hole (14), and the side sliders (8) are provided with elongated oblique side holes (11). The limiting device includes a central inclined column (4) that cooperates with the central inclined hole (14), and side inclined columns (6) that cooperate with the side inclined holes (11) are provided on both sides of the central inclined column (4).

2. A secondary slide down hill core-drawing mechanism according to claim 1, characterized in that: A spring (13) is provided between the side slider (8) and the fixed slider (9).

3. A secondary slide down hill core-pulling mechanism according to claim 1, characterized in that: The limiting device also includes a middle limiting block (3) and a side limiting block (5). The tails of the middle slider (10) and the fixed slider (9) are inclined surfaces. The side of the middle limiting block (3) and the side limiting block (5) that connects with the middle slider (10) and the fixed slider (9) is also an inclined surface.

4. A secondary slide down hill core-pulling mechanism according to claim 1, characterized in that: The lower mold (2) is provided with guide posts (7) at its four corners, and the upper mold (1) is provided with guide holes (12) at its four corners that cooperate with the guide posts (7).

5. A secondary slide down hill core-pulling mechanism according to claim 1, characterized in that: The length of the lateral inclined column (6) is longer than the length of the central inclined column (4).

6. A secondary slide down hill core-pulling mechanism according to claim 1, characterized in that: The middle slider (10) is an isosceles trapezoidal structure with its upper bottom close to the mold (18), and the side slider (8) is also a trapezoidal structure with its upper bottom far away from the mold (18).

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