Sliding block for injection mold

Abstract

The utility model discloses a sliding block for an injection mold, which comprises a movable sliding block and a fixed sliding block, the contact surface of the movable sliding block and the fixed sliding block is obliquely arranged, a first spring hole for installing a first spring is arranged on the opposite surface of the inclined surface of the movable sliding block, and an inclined pin and a top plate mechanism which can slide in the movable sliding block are arranged in the movable sliding block. The angle pin is connected into the top plate mechanism; a control groove capable of limiting the top plate mechanism is formed in the inclined face of the fixed sliding block. According to the utility model, the inclined pin and the top plate mechanism are arranged in the sliding block, so that the side wall of a product is demolded in the mold opening process, the product quality is ensured, the mold structure is simplified, the requirements on precision and processing are reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and specifically relates to a slider for injection molds. Background Technology

[0002] Injection molds are molds used in the injection molding process. They are used for plastic injection molding and are tools for producing plastic products. Injection molds work by heating and melting plastic material, then injecting it into the mold cavity, allowing it to cool and solidify, ultimately yielding the desired plastic product. Injection molds typically consist of two parts: a moving mold and a fixed mold. After the molds are closed, a mold cavity is formed. Plastic material is injected into the mold cavity under the pressure of the injection molding machine. After cooling and solidification, the mold is opened to remove the finished product.

[0003] Currently, in the production of similar products... Figure 1 When making plastic products, the sidewalls of the plastic products have shapes, which restricts the sliding of the mold along the mold opening direction after injection molding, thus making demolding difficult.

[0004] Existing solutions mainly employ sliding blocks combined with forced demolding or two-step core-pulling demolding. However, forced demolding may damage the product, while two-step core-pulling demolding often results in a more complex mold structure, leading to higher precision and processing requirements. Therefore, finding a way to achieve demolding of the product's sidewall shape through simplified structure has significant practical value. Utility Model Content

[0005] In order to solve the problems existing in the prior art, this utility model aims to provide a slider for injection molds, so as to realize the demolding of the product side wall shape during the process of opening (separating) the moving mold and the fixed mold of the injection mold.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0007] A slider for injection molds includes a movable slider and a fixed slider. The contact surfaces of the movable slider and the fixed slider are inclined, and a first spring hole for installing a first spring is provided on the opposite surface of the inclined surface of the movable slider. A slidable pin and a top plate mechanism are provided inside the movable slider, and the slidable pin is connected to the top plate mechanism. A control groove for limiting the top plate mechanism is provided on the inclined surface of the fixed slider.

[0008] Furthermore, the contact surfaces of the moving slider and the fixed slider are inclined at an angle of ° to °.

[0009] Furthermore, the fixed slider is provided with an inclined guide post, and the movable slider is provided with an inclined hole through which the inclined guide post can pass.

[0010] Furthermore, a through hole is provided at the rear end of the inclined pin.

[0011] Furthermore, the top plate mechanism includes a slanted pin plate and a fixing plate fixedly connected to the slanted pin plate; the slanted pin plate is provided with a connecting hole for connecting the slanted pin and a second spring hole for installing the second spring.

[0012] Furthermore, a limiting groove is provided at the lower end of the fixed plate, and a limiting block adapted to the limiting groove is provided on the movable slider. Through the cooperation of the limiting block and the limiting groove, the top plate mechanism is restricted within the movable slider.

[0013] Furthermore, the inclined pin plate is also provided with a guide shaft, which is slidably inserted into the movable slider.

[0014] Furthermore, a wear-resistant sheet is provided on the lower end surface of the movable slider.

[0015] The beneficial effects of this utility model are as follows: By setting a slanted pin and a top plate mechanism in the slider, this utility model realizes the demolding of the product side wall shape during the mold opening process, which ensures product quality, simplifies the mold structure, reduces the requirements for precision and processing, and thus reduces costs.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram for reference purposes.

[0019] Figure 2 This is a schematic diagram of the overall structure of the slider of this utility model;

[0020] Figure 3 This is a schematic diagram of the slider of this utility model being opened;

[0021] Figure 4 A top view of the inclined pin and top plate mechanism of this utility model installed inside the movable slider;

[0022] Figure 5 Side view of the inclined pin and top plate mechanism of this utility model installed inside the movable slider;

[0023] Figure 6 This is a schematic diagram showing the connection between the inclined pin and the top plate mechanism of this utility model;

[0024] Figure 7 This is a schematic diagram of the connection between the inclined pin and the inclined pin plate of this utility model;

[0025] Figure 8 This is a schematic diagram of the slider installation of this utility model;

[0026] Figure 9 This is a diagram showing the relationship between the slider of this utility model and the product after molding;

[0027] Figure 10 This is a side view of the first stage of the mold opening process of this utility model;

[0028] Figure 11 This is a top view of the first stage of the mold-making process of this utility model;

[0029] Figure 12 This is a partial schematic diagram of the first stage of the inclined pin demolding of this utility model;

[0030] Figure 13 This is a side view of the second stage of the mold opening process of this utility model;

[0031] Figure 14 This is a top view of the second stage of the mold-opening process of this utility model;

[0032] Figure 15 This is a side view of the third stage of the mold opening process of this utility model.

[0033] The following are the labels in the diagram: 1. Moving slider; 2. Fixed slider; 3. Angled pin; 4. Top plate mechanism; 5. Angled guide post; 6. Limiting block; 7. Wear-resistant plate; 8. First spring; 11. First spring hole; 12. Angled hole; 21. Control groove; 31. Through hole; 41. Angled pin plate; 42. Fixed plate; 43. Second spring; 44. Guide shaft; 411. Connecting hole; 412. Second spring hole; 421. Limiting groove. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] See Figure 1-4As shown, a slider for injection molds includes a movable slider 1 and a fixed slider 2. The contact surfaces of the movable slider 1 and the fixed slider 2 are inclined, and a first spring hole 11 for mounting a first spring 8 is provided on the opposite surface of the inclined surface of the movable slider 1. The movable slider 1 is provided with a slidable inclined pin 3 and a top plate mechanism 4, and the inclined pin 3 is connected to the top plate mechanism 4. The inclined surface of the fixed slider 2 is provided with a control groove 21 for limiting the top plate mechanism 4.

[0037] Furthermore, in this embodiment, the contact surface of the movable slider 1 and the fixed slider 2 has an inclination angle of 20° to 30°, preferably 20°.

[0038] Further, see Figure 2-4 As shown, in this embodiment, the fixed slider 2 is provided with a pair of inclined guide posts 5, and the movable slider 1 is provided with an inclined hole 12 through which the inclined guide posts 5 can pass; the movable slider 1 can be driven to move by the cooperation of the inclined guide posts 5 and the inclined hole 12.

[0039] Further, see Figure 6-7 As shown, in this embodiment, a through hole 31 is provided at the rear end of the inclined pin 3; the top plate mechanism 4 includes an inclined pin plate 41 and a fixing plate 42 fixedly connected to the inclined pin plate 41; the inclined pin plate 41 is provided with a connecting hole 411 for connecting the inclined pin 3; wherein, the connecting hole 411 is a stepped hole, and when the inclined pin 3 is installed, see Figure 7 As shown, after the inclined pin 3 passes through the small end hole of the connecting hole 411, a pin shaft passes through the through hole 31. The pin shaft is accommodated in the large end hole of the connecting hole 411 and abuts against the stepped surface of the connecting hole 411, thereby fixing the fixing plate 42 to the inclined pin plate 41, thus restricting the inclined pin 3 in the connecting hole 411. In this embodiment, the lateral width of the connecting hole 411 is greater than the width of the inclined pin 3, so that when the inclined pin 3 moves with the top plate mechanism 4 in the movable slider 1, the inclined pin 3 has lateral sliding space on the inclined pin plate 41.

[0040] For further details, please refer to [link / reference]. Figure 6-7 As shown, in this embodiment, the inclined pin plate 41 has a second spring hole 412 for installing the second spring 43; when the top plate mechanism 4 is installed into the movable slider 1, see... Figure 4-5 As shown, the second spring 43 is located between the movable slider 1 and the top plate mechanism 4. At this time, without external force, the second spring 43 tends to drive the top plate mechanism 4 to move outward from the movable slider 1. However, in this embodiment, to prevent the top plate mechanism 4 from being pushed out of the movable slider 1 by the second spring 43, see... Figure 5-6As shown, a limiting groove 421 is provided at the lower end of the fixed plate 42, and a limiting block 6 adapted to the limiting groove 421 is provided on the movable slider 1. Through the cooperation of the limiting block 6 and the limiting groove 421, the top plate mechanism 4 is restricted within the movable slider 1. At this time, see Figure 5 As shown, the rear end of the top plate mechanism 4 protrudes from the movable slider 1, and the movable slider 1 retains space for the top plate mechanism 4 to move into the movable slider 1. That is, when a certain force is applied to the rear end of the top plate mechanism 4, the top plate mechanism 4 can slide into the movable slider 1. In this embodiment, in order to improve the stability of the top plate mechanism 4 sliding into the movable slider 1, see [reference needed]. Figure 6-7 As shown, the inclined pin plate 41 is also provided with a guide shaft 44, which is slidably inserted into the movable slider 1.

[0041] Further, see Figure 1-2 As shown, in this embodiment, a wear-resistant plate 7 is provided on the lower end surface of the movable slider 1. The main function of the wear-resistant plate 7 is to protect the movable slider 1 from wear and damage, extend the service life of the movable slider 1, reduce the number of maintenance times, and thus reduce costs.

[0042] The working principle of this utility model is as follows:

[0043] Before use, please refer to Figure 8 As shown in the figure (label A represents the moving mold side; label B represents the fixed mold side; label C represents the limiting pin), firstly, the moving slider 1 is installed on the moving mold (male mold) side of the mold, and the fixed slider 2 is installed on the fixed mold (female mold) side of the mold. At this time, without the action of external force, the first spring 8 has the tendency to drive the moving slider 1 to move outward. Here, it should be noted that the limiting pin is set on the mold to limit the distance of the moving slider 1 from sliding away from the product.

[0044] After molding is completed, the moving slider 1 and the fixed slider 2 are as follows: Figure 9 As shown; during mold opening, as the moving mold and fixed mold separate, the movement between the moving slider 1 and the fixed slider 2 is divided into three stages, as detailed in the following section. Figure 10-15 As shown (C in the figure represents the limit pin; D in the figure represents the product):

[0045] Phase 1, fixed slider 2 moves upward (e.g.) Figure 10 (Vertical arrow in the middle), but the control groove 21 is not completely separated from the top plate mechanism 4. At this time, as the fixed slider 2 moves upward, the movable slider 1 moves away from the product under the action of the inclined guide post 5 (e.g., Figure 10 (Horizontal arrow in the middle), and the moving slider 1 will cause the inclined pin 3 to move laterally in the inclined pin plate 41 (e.g. Figure 11(Vertical arrow in the middle) to achieve demolding of the inclined pin 3 (e.g.) Figure 12 (As shown).

[0046] Phase Two, the fixed slider 2 continues to move upward (e.g.) Figure 13 (Vertical arrow in the middle) When the control groove 21 is completely separated from the top plate mechanism 4, the rear end of the top plate mechanism 4 is still in inclined contact with the lower end of the fixed slider 2. At this time, the inclined pin 3 achieves complete demolding (as shown by the arrow in the middle). Figure 14 As shown), the movable slider 1, along with the fixed slider 2, continues to move upwards. Under the action of the first spring 8 and the second spring 43, the movable slider 1, the inclined pin 3 installed therein, and the top plate mechanism 4 will move synchronously away from the product (as shown). Figure 13 (Horizontal arrow).

[0047] Phase 3, the fixed slider 2 continues to move upward (e.g. Figure 15 (Vertical arrow in the middle) When the rear end of the top plate mechanism 4 disengages from the lower end of the fixed slider 2, the fixed slider 2 stops moving away from the product under the limit of the limiting pin, while the top plate mechanism 4 continues to move away from the product under the action of the second spring 43 (e.g., Figure 15 (Horizontal arrow in the middle) until it returns to the initial state (e.g.) Figure 15 (As shown).

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slider for injection molds, comprising a movable slider (1) and a fixed slider (2), wherein the contact surfaces of the movable slider (1) and the fixed slider (2) are inclined, and a first spring hole (11) for mounting a first spring (8) is provided on the opposite surface of the inclined surface of the movable slider (1), characterized in that: The movable slider (1) is provided with a sliding inclined pin (3) and a top plate mechanism (4) that can slide inside it. The inclined pin (3) is connected inside the top plate mechanism (4). The fixed slider (2) has a control groove (21) on its inclined surface that can limit the position of the top plate mechanism (4).

2. The slider for injection molds according to claim 1, characterized in that: The contact surfaces of the moving slider (1) and the fixed slider (2) are inclined at an angle of 20° to 30°.

3. The slider for injection molds according to claim 1, characterized in that: The fixed slider (2) is provided with an inclined guide post (5), and the movable slider (1) is provided with an inclined hole (12) through which the inclined guide post (5) can pass.

4. The slider for injection molds according to claim 1, characterized in that: A through hole (31) is provided at the rear end of the inclined pin (3).

5. The slider for injection molds according to claim 1, characterized in that: The top plate mechanism (4) includes a slanted pin plate (41) and a fixed plate (42) fixedly connected to the slanted pin plate (41); the slanted pin plate (41) is provided with a connecting hole (411) for connecting the slanted pin (3) and a second spring hole (412) for installing the second spring (43).

6. The slider for injection molds according to claim 5, characterized in that: The lower end of the fixed plate (42) is provided with a limiting groove (421), and the movable slider (1) is provided with a limiting block (6) that is adapted to the limiting groove (421). Through the cooperation of the limiting block (6) and the limiting groove (421), the top plate mechanism (4) is restricted within the movable slider (1).

7. The slider for injection molds according to claim 6, characterized in that: The inclined pin plate (41) is also provided with a guide shaft (44), which is slidably inserted into the movable slider (1).

8. The slider for injection molds according to claim 1, characterized in that: A wear-resistant sheet (7) is provided on the lower end surface of the movable slider (1).

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