Simple internal pulling mechanism for sliding block

Abstract

The utility model discloses a simple inner pulling mechanism of a sliding block, which comprises a front mold core, and the lower end of the front mold core is connected with a sliding block insert pin; an inner pulling block is connected between the sliding block insert pin and the front mold core; one end of the inner pulling block is connected with a clamping block; the clamping block is arranged at the upper end of the inner pulling block and is clamped with the mold cavity; a belleville spring is connected between the other end of the inner pulling block and the sliding block insert pin; the belleville spring is extruded by the front mold core to be in a compressed state; the inner pulling block is also rotationally connected with a positioning pin; the two ends of the positioning pin are fixedly connected with the sliding block insert pin; and the inner pulling block is rotationally connected with the sliding block insert pin through a positioning pin. The inner pulling block and the sliding block insert pin are arranged, and the positioning pin is arranged on the inner pulling block, so that the middle of the inner pulling block can be rotationally clamped, and one end of the inner pulling block can be conveniently demolded.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a simple inner-drawing mechanism for a slider. Background Art

[0002] When producing plastic products, sometimes due to structural limitations of the plastic products, undercuts are provided on the slider to adapt to the product structure. When the slider is set at the lower end of the product, a bump or groove is provided on the upper end of the slider to adapt to the product structure. However, after the injection molded product is engaged with the slider, the slider cannot slide out directly. Existing internal pull-out sliders mostly have an adjustment mechanism provided inside the slider to separately adjust the up and down movement of the internal pull-out block. The structure is complex and requires an additional operation process. Utility Model Content

[0003] The purpose of the utility model is to solve the problems in the prior art and to propose a simple inner-drawing mechanism for a slider.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A simple inner-drawing mechanism of a slider comprises a front mold core, the lower end of the front mold core is connected to a slider pin; an inner-drawing block is connected between the slider pin and the front mold core; one end of the inner-drawing block is connected to a clamping block; the clamping block is arranged at the upper end of the inner-drawing block and is clamped with the mold cavity; a butterfly spring is connected between the other end of the inner-drawing block and the slider pin; and the butterfly spring is squeezed into a compressed state by the front mold core; a positioning pin is also rotatably connected to the inner-drawing block; the two ends of the positioning pin are fixedly connected to the slider pin; the inner-drawing block is rotatably connected to the slider pin via the positioning pin.

[0006] Preferably, a slot is provided on the upper end of the slider pin; the inner drawer block is movably connected to the slot; and a distance is left between the end of the inner drawer block close to the block and the slot.

[0007] Preferably, the positioning pin is arranged in the middle position of the inner drawer block; the clamping block and the butterfly spring are respectively arranged on both sides of the positioning pin; the clamping block rebounds upward through the butterfly spring to drive the downward demoulding.

[0008] Preferably, one end of the slider pin is connected to a slider seat; an inclined guide column is connected to the slider seat; and the slider seat is driven to move left and right by moving up and down the inclined guide column.

[0009] Compared with the prior art, the present invention provides a simple inner-drawing mechanism for a slider, which has the following beneficial effects:

[0010] The simple inner-drawing mechanism of the slider is provided with an inner-drawing block and a slider pin, and a positioning pin is provided on the inner-drawing block, so that the middle of the inner-drawing block can be rotated and clamped, which is convenient for demolding one end of the inner-drawing block. After the current mold core moves upward, the butterfly spring rebounds upward and drives the right side of the inner-drawing block to rebound upward. Since a positioning pin is provided in the middle of the inner-drawing block, a seesaw principle is formed at both ends of the inner-drawing block. The end of the inner-drawing block close to the clamping block moves downward for demolding, which can facilitate the inner-drawing block and the slider pin to be pulled out at the same time, making the slider quick to pull out without the need for other operating procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0013] In the figure: 10, front mold core; 21, slider pin; 22, inner drawer; 23, clamping block; 24, butterfly spring; 25, positioning pin; 26, clamping groove; 27, slider seat; 28, inclined guide column. DETAILED DESCRIPTION

[0014] The following will refer to Figure 1-2 The specific embodiment of the simple inner withdrawal mechanism of the slider in the utility model is introduced, which includes a front mold core 10, a slider pin 21 connected to the lower end of the front mold core 10; an inner withdrawal block 22 connected between the slider pin 21 and the front mold core 10; a clamping block 23 connected to one end of the inner withdrawal block 22; the clamping block 23 is arranged at the upper end of the inner withdrawal block 22 and is clamped with the mold cavity; a butterfly spring 24 is connected between the other end of the inner withdrawal block 22 and the slider pin 21; and the butterfly spring 24 is squeezed into a compressed state by the front mold core 10; a positioning pin 25 is also rotatably connected to the inner withdrawal block 22; both ends of the positioning pin 25 are fixedly connected to the slider pin 21; the inner withdrawal block 22 is rotatably connected to the slider pin 21 via the positioning pin 25. By providing the inner withdrawal block 22 and providing the positioning pin 25 on the inner withdrawal block 22, the middle of the inner withdrawal block 22 can be rotatably clamped, which facilitates demoulding of one end of the inner withdrawal block 22.

[0015] The upper end of the slider pin 21 is provided with a slot 26; the inner drawer block 22 is movably connected to the slot 26; and a distance is left between the end of the inner drawer block 22 close to the block 23 and the slot 26; the positioning pin 25 is provided in the middle of the inner drawer block 22; the block 23 and the butterfly spring 24 are provided on both sides of the positioning pin 25 respectively; the block 23 is driven downward to be demoulded by the upward rebound of the butterfly spring 24. During use, after the front mold core 10 moves upward, the butterfly spring 24 rebounds upward and drives the right side of the inner drawer block 22 to rebound upward. Since the positioning pin 25 is provided in the middle of the inner drawer block 22, the two ends of the inner drawer block 22 form a seesaw principle. The end of the inner drawer block 22 close to the block 23 moves downward to be demoulded, which makes it easy to simultaneously extract the inner drawer block 22 and the slider pin 21, making it convenient to demould the product.

[0016] In order to facilitate the movement of the slider pin 21, a slider seat 27 is connected to one end of the slider pin 21; an inclined guide column 28 is connected to the slider seat 27; and the slider seat 27 moves up and down and drives the left and right movement through the inclined guide column 28.

Claims

1. A simple inner-drawing mechanism for a slider, comprising a front mold core (10), characterized in that: The lower end of the front mold core (10) is connected to a slider pin (21); an inner drawer block (22) is connected between the slider pin (21) and the front mold core (10); one end of the inner drawer block (22) is connected to a clamping block (23); the clamping block (23) is arranged at the upper end of the inner drawer block (22) and is clamped with the mold cavity; a butterfly spring (24) is connected between the other end of the inner drawer block (22) and the slider pin (21); and the butterfly spring (24) is squeezed into a compressed state by the front mold core (10); a positioning pin (25) is also rotatably connected to the inner drawer block (22); both ends of the positioning pin (25) are fixedly connected to the slider pin (21); the inner drawer block (22) is rotatably connected to the slider pin (21) through the positioning pin (25).

2. A simple inner-drawing mechanism for a slider according to claim 1, characterized in that: The upper end of the slider pin (21) is provided with a clamping groove (26); the inner drawer block (22) is movably connected to the clamping groove (26); and a distance is left between the end of the inner drawer block (22) close to the clamping block (23) and the clamping groove (26).

3. The simple inner-drawing mechanism of a slider according to claim 1, characterized in that: The positioning pin (25) is arranged in the middle of the inner drawer block (22); the clamping block (23) and the butterfly spring (24) are respectively arranged on both sides of the positioning pin (25); the clamping block (23) rebounds upwards through the butterfly spring (24) to drive the mold to be demoulded downwards.

4. The simple inner-drawing mechanism of a slider according to claim 1, characterized in that: One end of the slider pin (21) is connected to a slider seat (27); an inclined guide column (28) is connected to the slider seat (27); the slider seat (27) moves up and down and drives the slider seat (27) to move left and right through the inclined guide column (28).

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