Injection mold slider pin hidden fixing mechanism

Abstract

The utility model discloses a kind of injection mould slider thimble hidden type fixing mechanism, it is related to injection mould technical field, including side wall, and three top blocks for fixing injection product, the side of top block is fixedly connected with moving plate, the inside of moving plate is inserted with guide column, the top of three guide columns is fixedly connected with press, the inside of top block is inserted with the movable block that can rebound, the inside fixedly connected with thimble of movable block, the top of thimble extends movable block and is in contact with the side wall of injection product outside.This utility model drives the movement of guide column by press, and then movable plate and top block can be driven to move, and then realize that top block encloses frame and the separation of top block and injection product, without being equipped with air cylinder to each top block, reduce overall production cost.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a hidden fixing mechanism for the slider ejector pin of an injection mold. Background Technology

[0002] In existing injection molds, when injection molding products, the mold's top block usually forms a frame, and then the injection molding machine injects the product into the frame. After cooling, the product is formed. However, the cooled product is prone to sticking to the frame formed by the top block.

[0003] Existing technologies mainly use cylinders to move the ejector blocks backward, allowing the product to detach from the frame. Since the frame is formed by three ejector blocks, three corresponding cylinders are needed to move the ejector blocks, making the overall mold assembly bulky and increasing maintenance and repair costs. Therefore, this utility model proposes a hidden fixing mechanism for the slider ejector pin of an injection mold. Utility Model Content

[0004] The purpose of this utility model is to provide a hidden fixing mechanism for the slider ejector pin of an injection mold, so as to solve the problem mentioned in the background art that the existing plastic products have a large overall mold component during injection molding, which increases the maintenance and repair costs during product production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hidden fixing mechanism for a slider ejector pin in an injection mold, comprising a side panel and three top blocks for fixing the injection molded product. A movable plate is fixedly connected to one side of each top block, and a guide post is inserted inside the movable plate. The top ends of the three guide posts are fixedly connected to a press. A spring-loaded movable block is inserted inside the top block, and an ejector pin is fixedly connected inside the movable block. The top end of the ejector pin extends out of the movable block and abuts against the side wall of the injection molded product.

[0006] Preferably, the movable plate includes a slider fixedly connected to the top block, and a movable guide post fixing seat is provided on one side of the slider, the guide post being able to move along the guide post fixing seat within a limited range.

[0007] Preferably, the guide post fixing seat has a through hole inside, and the top of the through hole has an inclined groove. The guide post includes a guide rod inserted into the through hole, and the top of the guide rod is fixedly connected to a limiting circular plate that matches the inclined groove.

[0008] Preferably, one side of the guide post fixing seat is provided with a groove that matches the corner of the slider, and the side wall of the groove abuts against one end of the moving block.

[0009] Preferably, a limiting groove is formed inside the top block, and a spring is fixedly connected to one end of the movable block, with one end of the spring fixedly connected to the side wall of the receiving groove of the top block.

[0010] Preferably, a lower baffle is slidably connected to the bottom end of the slider, protrusions are fixedly connected to both sides of the slider, and guide plates are provided on both sides of the slider. A groove adapted to the protrusion is opened on the opposite side of the two guide plates.

[0011] The technical effects and advantages of this utility model are as follows: This utility model uses a press to drive the guide column to move, which in turn drives the moving plate and the top block to move, thereby realizing the top block forming a frame and the separation of the top block from the injection molded product. There is no need to equip each top block with a cylinder, which reduces the overall production cost. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the fixing mechanism of this utility model.

[0014] Figure 3 This is a front view cross-sectional structural diagram of the fixing mechanism of this utility model.

[0015] In the diagram: 1. Side panel; 2. Moving part; 21. Guide post fixing seat; 211. Perforation; 212. Inclined groove; 213. Groove; 22. Sliding block; 221. Protrusion; 3. Guide post; 31. Limiting round plate; 4. Top block; 6. Guide plate; 61. Slide groove; 7. Spring; 8. Moving block; 9. Ejector pin; 10. Limiting groove; 11. Lower baffle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides, for example Figures 1-3The above describes a sliding block ejector pin concealed fixing mechanism for injection molds, which includes a side panel 1 and three top blocks 4 for fixing the injection molded product. A movable part 2 is fixedly connected to one side of the top block 4. A guide post 3 is inserted into the movable part 2. The top ends of the three guide posts 3 are fixedly connected to the press. A spring-loaded movable block 8 is inserted into the top block 4. An ejector pin 9 is fixedly connected to the inside of the movable block 8. The top end of the ejector pin 9 extends out of the movable block 8 and abuts against the side wall of the injection molded product.

[0018] In existing technologies, the movement of the ejector block 4 relies on a cylinder. This invention proposes a hidden fixing mechanism for the ejector pin of an injection mold slider. First, the press moves upward, which moves the guide post 3 upward. When the guide post 3 moves upward, it squeezes the moving part 2, which in turn moves the ejector block 4 to demold. Due to the stickiness of the injection molded product, it will adhere to the side of one of the ejector blocks 4. At the same time, the movement of the moving part 2 will cause the moving block 8 to move. When the moving block 8 moves, the ejector pin 9 will retract, separating the injection molded product adhered to the ejector pin 9. When the press presses down again, it moves the moving part 2 in the opposite direction. At this time, the ejector pin 9 will push the injection molded product away from the side of the ejector block 4, causing the product to fall off. This invention eliminates the need to equip each ejector block 4 with a cylinder, reducing the overall production cost.

[0019] like Figure 1 As shown, the movable component 2 includes a slider 22 fixedly connected to the top block 4. A movable guide post fixing seat 21 is provided on one side of the slider 22. The guide post 3 can move along the guide post fixing seat 21 in a limited manner. By limiting the movement distance of the guide post fixing seat 21, the movable component 2 is prevented from derailing.

[0020] like Figure 3 As shown, the guide post fixing seat 21 has a through hole 211 inside, and a groove 212 is provided at the top of the through hole 211. The guide post 3 includes a guide rod inserted into the through hole 211, and a limiting circular plate 31 adapted to the groove 212 is fixedly connected to the top of the guide rod.

[0021] The cooperation between the limiting circular plate 31 and the inclined groove 212 allows the limiting circular plate 31 to limit the movement distance of the guide rod, preventing the moving part 2 from derailing.

[0022] like Figure 3 As shown, a groove 213 adapted to the corner of the slider 22 is provided on one side of the guide post fixing seat 21, and the side wall of the groove 213 abuts against one end of the moving block 8; the movement distance of the guide post fixing seat 21 can be prevented by the groove 213 cooperating with the corner of the slider 22.

[0023] like Figure 3As shown, a limiting groove 10 is provided inside the top block 4, and a spring 7 is fixedly connected to one end of the moving block 8. One end of the spring 7 is fixedly connected to the side wall of the receiving groove of the top block 4. The spring 7 enables the moving block 8 to be reset after it moves, which facilitates the movement of the ejector pin 9 next time.

[0024] like Figure 1 As shown, a lower baffle 11 is slidably connected to the bottom end of the slider 22, and protrusions 221 are fixedly connected to both sides of the slider 22. Guide plates 6 are provided on both sides of the slider 22, and grooves 61 that are adapted to the protrusions 221 are opened on the opposite side of the two guide plates 6.

[0025] The lower baffle 11 can lift the slider 22, and the slider 22 can move along the side of the guide plate 6 through the cooperation of the groove 61 and the protrusion 221.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concealed fixing mechanism for a slider ejector pin in an injection mold, comprising a side panel (1) and three ejector blocks (4) for fixing the injection molded product, characterized in that: A movable part (2) is fixedly connected to one side of the top block (4). A guide post (3) is inserted inside the movable part (2). The top ends of the three guide posts (3) are fixedly connected to the press. A spring-loaded movable block (8) is inserted inside the top block (4). An ejector pin (9) is fixedly connected inside the movable block (8). The top end of the ejector pin (9) extends out of the movable block (8) and abuts against the side wall of the injection molded product.

2. The concealed fixing mechanism for the slider ejector pin of an injection mold according to claim 1, characterized in that: The movable component (2) includes a slider (22) fixedly connected to the top block (4). A movable guide post fixing seat (21) is provided on one side of the slider (22), and the guide post (3) can move along the guide post fixing seat (21).

3. The concealed fixing mechanism for the slider ejector pin of an injection mold according to claim 2, characterized in that: The guide post fixing seat (21) has a through hole (211) inside, and a groove (212) is provided at the top of the through hole (211). The guide post (3) includes a guide rod inserted into the through hole (211), and a limiting circular plate (31) adapted to the groove (212) is fixedly connected to the top of the guide rod.

4. The concealed fixing mechanism for the slider ejector pin of an injection mold according to claim 2, characterized in that: The guide post fixing seat (21) has a groove (213) on one side that matches the corner of the slider (22), and the side wall of the groove (213) abuts against one end of the moving block (8).

5. The concealed fixing mechanism for the slider ejector pin of an injection mold according to claim 1, characterized in that: The top block (4) has a limiting groove (10) inside. One end of the moving block (8) is fixedly connected to a spring (7), and one end of the spring (7) is fixedly connected to the side wall of the receiving groove of the top block (4).

6. The concealed fixing mechanism for the slider ejector pin of an injection mold according to claim 2, characterized in that: The bottom end of the slider (22) is slidably connected to a lower baffle (11), and the two sides of the slider (22) are fixedly connected to protrusions (221). Guide plates (6) are provided on both sides of the slider (22), and grooves (61) that are adapted to the protrusions (221) are opened on the opposite side of the two guide plates (6).

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