Bidirectional sliding block core-pulling structure applied to plastic mold

Abstract

The utility model discloses a bidirectional sliding block core-pulling structure applied to a plastic mould. The bidirectional sliding block core-pulling structure comprises a sliding block seat, a sliding block A, a sliding block B and an inner sliding block, the sliding block seat is in sliding fit with a shovel base, and the shovel base and the sliding block seat are connected with an inclined guide column; the sliding block A and the sliding block B are connected to the sliding block base, the inner sliding block is located between the sliding block A and the sliding block B, and an elastic piece is connected between the inner sliding block and the sliding block base. The sliding block B is in sliding fit with the inner sliding block through an inclined face, a limiting pin is connected to the sliding block B, a limiting groove matched with the limiting pin is formed in the inner sliding block, and the limiting pin is in sliding fit with the limiting groove. Compared with the prior art, the two-direction core-pulling mechanism can realize core-pulling in two directions by one single sliding block, is small in occupied space, simple and stable in structure and low in cost, and does not interfere with other structures.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic moulds, in particular to a two-way slider core-pulling structure applied to plastic moulds. Background Technique

[0002] A plastic mould is a short name for a combined mould used for compression moulding, extrusion moulding, injection moulding, blow moulding and low-foaming moulding. Coordinated changes in the convex die, concave die and auxiliary forming system of the mould can process a series of plastic parts with different shapes and sizes.

[0003] When the existing plastic mould is opened, it only makes a simple one-way linear movement, and the undercut of the injection product cannot be separated from the core hole on the mould, and the whole injection product cannot be smoothly demoulded, resulting in damage to the product. And each individual slider core-pulling takes up a large space and will interfere with the rest of the product mechanism, resulting in a complex product structure or the mould cannot be formed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a two-way slider core-pulling structure applied to plastic moulds, which can realize core-pulling in two directions by a single slider, occupies a small space, has a simple and stable structure, low cost, and does not interfere with the rest of the structure, so as to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A two-way slider core-pulling structure applied to plastic moulds includes a slider seat, slider A, slider B and an inner slider; a lifter is slidably fitted on the slider seat, and a cam pin is connected to the lifter and the slider seat; slider A and slider B are connected to the slider seat, the inner slider is located between slider A and slider B, and an elastic member is connected between the inner slider and the slider seat; slider B and the inner slider are slidably fitted through an inclined surface, a limit pin is connected to slider B, a limit groove adapted to the limit pin is provided on the inner slider, and the limit pin is slidably fitted in the limit groove.

[0007] A further improvement of the utility model is that a bottom wear-resistant block is provided at the bottom of the slider seat, side limit blocks are provided on both sides of the slider seat and the lifter, and an end limit block is provided at the bottom of one end of the slider seat.

[0008] A further improvement of the utility model is that a chute is provided on the slider seat, a conical slide post at the bottom of the lifter is slidably fitted in the chute, a rectangular groove is provided on the bottom wear-resistant block, and the slide post extends into the rectangular groove.

[0009] A further improvement of the utility model is that the elastic member is a spring, a guide rod is connected to the slider seat, a guide hole is provided on the inner slider, the guide rod extends into the guide hole, and the spring is sleeved on the outer wall of the guide rod in the guide hole.

[0010] A further improvement of the present utility model is that the side of the inner slider is clamped to slider A, and a side wear-resistant block is connected to the side of slider B.

[0011] A further improvement of the present utility model is that slider A and slider B are fixedly connected to the slider seat by bolts.

[0012] A further improvement of the present utility model is that the limit pin is a semi-threaded rod, and the threaded end of the limit pin is in threaded fit with slider B.

[0013] A further improvement of the present utility model is that the limit groove is a long waist-shaped groove.

[0014] The beneficial effects of the present utility model:

[0015] The present utility model is applied to a two-way slider core-pulling structure of a plastic mold. This slider structure is simple in design, occupies a small space, and is suitable for products with multi-directional core-pulling requirements or situations with mutual interference.

[0016] The present utility model is applied to a two-way slider core-pulling structure of a plastic mold, simplifies the mold structure, eliminates the need for a separate oil cylinder core-pulling or ejector plate core-pulling, shortens the mold design time and manufacturing time, and directly reduces the total manufacturing cost of the mold solution. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 is an exploded view of the present utility model.

[0019] In the figure: 1 - slider seat, 2 - slider A, 3 - slider B, 4 - inner slider, 401 - limit groove, 5 - lifter base, 6 - inclined guide pillar, 7 - limit pin, 8 - bottom wear-resistant block, 9 - side limit block, 10 - end limit block, 11 - spring, 12 - guide rod, 13 - side wear-resistant block, 14 - product. Specific Embodiments

[0020] The following further clarifies the present utility model in conjunction with the drawings and specific embodiments.

[0021] Example 1: As Figures 1-2As shown in the figure, a two-way slider core-pulling structure applied to a plastic mold includes a slider seat 1, a slider A 2, a slider B 3 and an inner slider 4; a lifter base 5 is slidably fitted on the slider seat 1, and an inclined guide post 6 is connected to the lifter base 5 and the slider seat 1; the slider A 2 and the slider B 3 are connected to the slider seat 1, the inner slider 4 is located between the slider A 2 and the slider B 3, and an elastic member is connected between the inner slider 4 and the slider seat 1; the slider B 3 and the inner slider 4 are slidably fitted through an inclined plane, a limit pin 7 is connected to the slider B 3, and a limit groove 401 adapted to the limit pin 7 is provided on the inner slider 4, and the limit pin 7 is slidably fitted in the limit groove 401.

[0022] A bottom wear-resistant block 8 is provided at the bottom of the slider seat 1, side limit blocks 9 are provided on both sides of the slider seat 1 and the lifter base 5, and an end limit block 10 is provided at the bottom of one end of the slider seat 1.

[0023] A chute is provided on the slider seat 1, and a conical slide post at the bottom of the lifter base 5 is slidably fitted in the chute. A rectangular groove is provided on the bottom wear-resistant block 8, and the slide post extends into the rectangular groove.

[0024] The elastic member is a spring 11. A guide rod 12 is connected to the slider seat 1. A guide hole is provided on the inner slider 4, and the guide rod 12 extends into the guide hole, and the spring 11 is sleeved on the outer wall of the guide rod 12 in the guide hole.

[0025] The side surface of the inner slider 4 is clamped to the slider A 2, and a side wear-resistant block 13 is connected to the side of the slider B 3.

[0026] The slider A 2 and the slider B 3 are fixedly connected to the slider seat 1 by bolts.

[0027] The limit pin 7 is a semi-threaded rod, and the threaded end of the limit pin 7 is threadedly fitted to the slider B 3.

[0028] The limit groove 401 is a long waist-shaped groove.

[0029] From Figure 2 it can be seen that the product 14 has undercuts in direction one and direction two that need to be demolded, by the slider A 2 and the inner slider 4 respectively, and the two are in a 90° vertical relationship. In the normal case, it is necessary to separately make sliders in the directions of direction one and direction two to form the product 14 here. At present, there are other mechanisms interfering in the direction of the inner slider 4 of the product 14, resulting in the infeasibility of the conventional solution.

[0030] To solve the above technical problems, the present utility model adopts the technical solution shown in the figure, and the action principles are respectively:

[0031] ①. When the mold is opened, the inclined guide post 6 drives the slider seat 1 to slide backward on the bottom wear-resistant block 8.

[0032] ②. At the same time, the slider A 2 is connected to the slider seat 1 by bolts, and the slider A 2 normally slides backward for demolding, solving the core-pulling of the product 14 in the first slider direction.

[0033] ③. Meanwhile, the slider B3 is connected to the slider seat 1 by bolts, and the slider B3 also normally retracts for demolding. The inner slider 4 is connected to the slider B3 through a T-slot. Since the spring 11 always holds the inner slider 4 against retraction, the inner slider 4 can only move along direction two within the stroke of the limit pin 7, solving the undercut in direction two. When the slider B3 retracts along direction one by a core-pulling distance reaching the stroke of the limit pin 7, the limit pin 7 of the slider B3 hits the inner slider 4. Subsequently, the slider B3 drives the inner slider 4 to continuously retract until the end of the entire slider stroke, completing the entire mold opening operation. There is no requirement for the sequence of mold closing, and normal mold closing can be carried out, and then the normal cycle can be continued.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A bidirectional slider core pulling structure used in plastic molds, characterized in that: The invention comprises a slider seat (1), a slider A (2), a slider B (3) and an inner slider (4); a shovel base (5) is slidably matched on the slider seat (1), and an inclined guide column (6) is connected to the shovel base (5) and the slider seat (1); the slider A (2) and the slider B (3) are connected to the slider seat (1), the inner slider (4) is located between the slider A (2) and the slider B (3), and an elastic member is connected between the inner slider (4) and the slider seat (1); the slider B (3) and the inner slider (4) are slidably matched via an inclined surface, a limit pin (7) is connected to the slider B (3), and a limit groove (401) adapted to the limit pin (7) is provided on the inner slider (4), and the limit pin (7) is slidably matched in the limit groove (401).

2. A bidirectional slider core-pulling structure for plastic molds according to claim 1, characterized in that: A bottom wear-resistant block (8) is provided at the bottom of the slider seat (1), side limit blocks (9) are provided on both sides of the slider seat (1) and the shovel base (5), and an end limit block (10) is provided at the bottom of one end of the slider seat (1).

3. A bidirectional slider core-pulling structure for plastic molds as claimed in claim 2, characterized in that: The slider seat (1) is provided with a slide groove, the cone-shaped slide post at the bottom of the shovel base (5) is slidably matched in the slide groove, and the bottom wear-resistant block (8) is provided with a rectangular groove, and the slide post extends into the rectangular groove.

4. A bidirectional slider core-pulling structure for plastic molds according to claim 1, characterized in that: The elastic member is a spring (11), a guide rod (12) is connected to the slider seat (1), a guide hole is provided on the inner slider (4), the guide rod (12) extends into the guide hole, and the spring (11) is sleeved on the outer wall of the guide rod (12) in the guide hole.

5. The bidirectional slider core-pulling structure for plastic mold according to claim 1, characterized in that: The side of the inner slider (4) is clamped to the slider A (2), and the side of the slider B (3) is connected to a side wear-resistant block (13).

6. A bidirectional slider core-pulling structure for plastic molds according to claim 1, characterized in that: The slider A (2) and the slider B (3) are fixed to the slider seat (1) by bolts.

7. A bidirectional slider core-pulling structure for plastic molds according to claim 1, characterized in that: The limiting pin (7) is a semi-threaded rod, and the threaded end of the limiting pin (7) is threadably engaged with the slider B (3).

8. A bidirectional slider core-pulling structure for plastic molds as claimed in claim 7, characterized in that: The limiting groove (401) is a long waist-shaped groove.

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