Sliding block core-pulling anti-collision structure

Abstract

The utility model relates to the field of injection molds, in particular to a sliding block core-pulling anti-collision structure which comprises a forming ejector pin, an anti-collision limiting rod, an inclined guide column, a stop block, a sliding block and a limiting hole, the forming ejector pin and the anti-collision limiting rod are connected to an ejector pin plate, and in the initial stage of mold opening, the inclined guide column fixed to a front mold moves upwards along with the front mold; an inclined component force of the inclined guide column drives the sliding block to move backwards until the sliding block is blocked by the check block, and at the moment, the limiting hole in the sliding block is located above the anti-collision limiting rod. In the initial stage of product ejection, the sliding block is blocked by the check block, the anti-collision limiting rod is located below the sliding block and right faces the limiting hole, and the anti-collision limiting rod enters the limiting hole to limit forward movement of the sliding block along with upward movement of the ejector plate of the mold. The technical problems that in the prior art, due to failure of a sliding block reset spring, a sliding block is reset in advance and collides with an ejector pin, mold parts are damaged, and the service life of a mold is affected are solved.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to a slide core-pulling anti-collision structure. Background Art

[0002] When injection molding, if the side surface of the molded part has uneven shapes or side holes, the solidified plastic workpiece cannot be properly released from the mold during mold opening due to interference with the mold cavity. In this case, a side parting or core pulling mechanism is required. Sliders are the most common form of side parting or core pulling mechanisms and are often used for core pulling on the inner sidewall of the workpiece. Often, if the slider return spring fails, the slider will return to its original position before the ejector mechanism, causing the slider to collide with the ejector mechanism, thereby damaging the mold cavity, ejector structure, and slider, affecting product production efficiency. Utility Model Content

[0003] In order to solve the technical problem in the prior art that the slider resets prematurely and collides with the ejector pin due to the failure of the slider reset spring, causing damage to mold parts, thereby affecting the mold life and low product production efficiency, the utility model proposes a slider core pulling anti-collision structure to solve the above technical problem.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] The utility model provides a slider core-pulling anti-collision structure for a mold, comprising: a forming ejector pin, the forming ejector pin being connected to the ejector plate of the mold; an anti-collision limit rod, the anti-collision limit rod being connected to the ejector plate and parallel to the forming ejector pin; an inclined guide column, the inclined guide column being fixed to the front mold of the mold; a stop block, the stop block being fixed to the base of the mold; a slider, the slider being movably configured at the base of the mold, and in the initial stage of mold opening, the inclined guide column fixed to the front mold moves upward with the front mold, and an oblique component force of the inclined guide column (obliquely inserted into the slider) drives the slider to move backward until the slider is blocked by the stop block; a limiting hole, the limiting hole being formed on the slider, and in the initial stage of product ejection, the slider is blocked by the stop block, the anti-collision limit rod is located below the slider and directly opposite to the limiting hole, and as the ejector plate of the mold moves upward, the anti-collision limit rod enters the limiting hole to limit the forward movement of the slider.

[0006] Furthermore, it also includes an oil cylinder, and the output end of the oil cylinder is connected to the ejector plate.

[0007] Furthermore, the anti-collision limit rod is fixed on the ejector plate and moves along with the ejector plate.

[0008] Furthermore, there are multiple anti-collision limit rods, and accordingly, the number of the limit holes is equal to the number of the anti-collision limit rods.

[0009] Furthermore, there are multiple forming ejectors, which are all fixed on the ejector plate and move together with the ejector plate.

[0010] Furthermore, the anti-collision limiting rod can pass through the sliding block through the limiting hole during the product demoulding stage.

[0011] Furthermore, an oblique guide post hole is formed on the sliding block, and the oblique guide post hole is fitted to receive the oblique guide post.

[0012] Based on the above technical solution, the technical effects that can be achieved by the present invention are:

[0013] The slider core-pulling anti-collision structure of the present invention improves the slider and limits the slider by means of a limit rod. Due to the presence of the anti-collision limit rod, the slider is prevented from colliding with the ejector pin. Specifically, at the initial stage of product ejection, the ejector plate moves upward, causing the anti-collision limit rod and the forming ejector pin to move upward along with the upward movement of the ejector plate. During the upward movement of the inclined ejector, the anti-collision limit rod enters the slider limit hole, thereby limiting the forward movement of the slider. Because there is a block behind the slider and the anti-collision limit rod in the middle, the slider is fixed there and cannot move forward, so that the slider cannot contact the forming ejector pin, thereby avoiding damage to the forming ejector pin, thereby improving the stability of the mold structure and the qualified rate of the product. The structure solves the technical problem in the prior art that the slider reset spring fails, causing the slider to reset prematurely and collide with the ejector pin, causing damage to mold parts, thereby shortening the mold life and leading to low product production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the slider core-pulling anti-collision structure (mold closing state) of the utility model;

[0015] Figure 2 This is a schematic diagram of the slider core-pulling anti-collision structure of the present invention during the product ejection stage (working state).

[0016] Among them: 1-anti-collision limit rod; 2-stop block; 3-slider; 4-inclined guide column; 5-limiting hole; 6-forming ejector; 7-oil cylinder; 8-ejector plate; 9-base. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0019] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0020] like Figure 1-2 As shown, the utility model provides a slider core-pulling anti-collision structure for a mold, comprising a forming ejector pin 6, an anti-collision limit rod 1, an inclined guide column 4, a stopper 2, a slider 3 and a limit hole 5. The forming ejector pin 6 is connected to the ejector plate 8 of the mold, the anti-collision limit rod 1 is connected to the ejector plate 8 and is parallel to the forming ejector pin 6, the inclined guide column 4 is fixed to the front mold of the mold, the stopper 2 is fixed to the base 9 of the mold, and the slider 3 is movably configured at the base 9 of the mold. At the initial stage of mold opening, the inclined guide column 4 fixed to the front mold is fixed to the stopper 2. The guide column 4 moves upward with the front mold, and an oblique component force of the oblique guide column 4 (obliquely inserted into the slider 3) drives the slider 3 to move backward until the slider 3 is blocked by the block 2. At this time, the limit hole 5 on the slider 3 is located directly above the anti-collision limit rod 1. In the initial stage of product ejection, the slider 3 is blocked by the block 2, and the anti-collision limit rod 1 is located below the slider 3 and opposite the limit hole 5. As the ejector plate 8 of the mold moves upward, the anti-collision limit rod 1 enters the limit hole 5, thereby limiting the forward movement of the slider 3.

[0021] In order to drive the ejector plate 8 to move, the slider core-pulling anti-collision structure of the present invention further includes an oil cylinder 7 , and the output end of the oil cylinder 7 is connected to the ejector plate 8 .

[0022] In a specific embodiment of the present invention, the anti-collision limit rod 1 is fixed on the ejector plate 8 and moves along with the ejector plate 8 .

[0023] In a specific embodiment of the present invention, there are multiple anti-collision limiting rods 1 , and accordingly, the number of the limiting holes 5 is equal to the number of the anti-collision limiting rods 1 .

[0024] In a specific embodiment of the present invention, there are multiple forming ejector pins 6 , which are all fixed on the ejector plate 8 and move together with the ejector plate 8 .

[0025] In a specific embodiment of the present invention, the anti-collision limiting rod 1 can pass through the slider 3 through the limiting hole 5 during the product demoulding stage.

[0026] In a specific embodiment of the present invention, an oblique guide post hole is formed on the slider 3, and the oblique guide post hole is connected to the oblique guide post 4. The oblique guide post 4 entering the oblique guide post hole drives the slider 3 to move when an oblique component force is generated during the upward movement of the front mold.

[0027] Therefore, at the initial stage of mold opening, the inclined guide column 4 drives the slider 3 to retreat. When the slider 3 retreats to contact the stop block 2, the slider 3 stops retreating due to the obstruction of the stop block 2. At this time, the anti-collision limit rod 1 is directly below the limit hole 5 of the slider 3.

[0028] Therefore, at the initial stage of product ejection, the oil cylinder 7 is started to drive the ejector plate 8 to move upward, so that the anti-collision limit rod 1 and the forming ejector 6 move upward with the upward movement of the ejector plate 8. During the upward movement of the inclined ejector, the anti-collision limit rod 1 enters the limit hole 5 on the slider 3, thereby limiting the forward movement of the slider 3.

[0029] After the product is taken out, the ejector plate 8 drives the forming ejector 6 and the anti-collision limit rod 1 to reset. At this time, the anti-collision limit rod 1 disengages from the limit hole 5 on the slider 3, thereby releasing the limit on the slider 3, allowing the slider 3 to move forward.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] At the initial stage of product ejection, the oil cylinder 7 is started to drive the ejector plate 8 to move upward, so that the anti-collision limit rod 1 and the forming ejector 6 move upward with the upward movement of the ejector plate 8. During the upward movement of the ejector plate 8, the anti-collision limit rod 1 enters the limit hole 5 on the slider 3, thereby limiting the forward movement of the slider 3. Figure 2 Because there is a stopper 2 behind the slider 3 and an anti-collision limit rod 1 in the middle, the slider 3 is fixed here and cannot move forward, so that the slider 3 cannot contact the forming ejector 6, thereby avoiding damage to the forming ejector 6, improving the stability of the mold structure, and thus improving the qualified rate of the product.

[0032] It should be understood that the specific embodiments described above are only used to explain the present invention and are not intended to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A slider core-pulling anti-collision structure, used for a mold, characterized in that: include: A molding ejector pin (6), wherein the molding ejector pin (6) is connected to an ejector plate (8) of the mold; An anti-collision limit rod (1), the anti-collision limit rod (1) is connected to the ejector plate (8) and is parallel to the molding ejector (6); An inclined guide post (4), wherein the inclined guide post (4) is fixed to the front mold of the mold; A stopper (2), wherein the stopper (2) is fixed to a base (9) of the mold; A slider (3), wherein the slider (3) is movably arranged on a base (9) of the mold, and at the initial stage of mold opening, an oblique component of the oblique guide pillar (4) drives the slider (3) to retreat in the process of moving upward with the front mold until the slider (3) is blocked by the stopper (2); A limiting hole (5) is formed on the slider (3). At the initial stage of product ejection, the slider (3) is blocked by the block (2). The anti-collision limiting rod (1) is located below the slider (3) and directly faces the limiting hole (5). As the ejector plate (8) of the mold moves upward, the anti-collision limiting rod (1) enters the limiting hole (5) to limit the forward movement of the slider (3).

2. The slider core-pulling anti-collision structure according to claim 1 is characterized in that: It also comprises an oil cylinder (7), the output end of which is connected to the ejector plate (8).

3. The slider core-pulling anti-collision structure according to claim 1 is characterized in that: The anti-collision limiting rod (1) is fixed on the ejector plate (8) and moves along with the ejector plate (8).

4. The slider core-pulling anti-collision structure according to claim 1 is characterized in that: There are a plurality of anti-collision limiting rods (1), and accordingly, the number of the limiting holes (5) is equal to the number of the anti-collision limiting rods (1).

5. The slider core-pulling anti-collision structure according to claim 1 is characterized in that: There are a plurality of molding ejector pins (6), which are all fixed on an ejector pin plate (8) and move along with the ejector pin plate (8).

6. The slider core-pulling anti-collision structure according to claim 1, characterized in that: The anti-collision limiting rod (1) can penetrate the sliding block (3) through the limiting hole (5) during the product demoulding stage.

7. The slider core-pulling anti-collision structure according to claim 1 is characterized in that: The slide block (3) is provided with an oblique guide post hole, and the oblique guide post hole is adapted to be connected to the oblique guide post (4).

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