Push plate synchronous ejection mold mechanism

Abstract

The utility model discloses a kind of push plate synchronous ejection mould mechanism, belong to mould technical field, its technical key points include mould frame and fixed mould installed in the side of the mould frame, the fixed mould is provided with movable mould away from the side of the mould frame, the inside of the mould frame is evenly provided with several ejector pin main bodies, each the surface of the ejector pin main body is all through the mould frame and the fixed mould, the utility model is ejected by the large-area uniform contact of push plate main body and injection molding piece, avoids the product deformation or damage possibly caused by traditional ejector pin local stress;By using deployable inclined web, automatically receiving injection molding piece after demolding, avoid it high place fall and lead to knock damage;Grid-shaped damping plate increases friction to prevent workpiece from sliding, while inclined design facilitates residual coolant flow guide, both protection and drainage function, only four corners are fixed and are high-temperature-resistant aramid fiber material, facilitate cleaning impurities and liquid.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a push plate synchronous ejection mold mechanism. Background Technology

[0002] In modern industrial production such as plastic injection molding and metal die casting, molds are key process equipment for replicating product shapes. As a core component of the mold, the ejection system's function is to safely, reliably, and efficiently remove the solidified product from the mold cavity or core after the molding cycle, ensuring continuous and automated production.

[0003] Traditional ejection methods typically employ ejector pins, ejector tubes, or ejector blocks. While this structure is widely used and technologically mature, it is less effective for deep-cavity, thin-walled, or shell-type products. These products have high clamping forces with the core and a large contact area. If only dispersed ejector pins are used, the concentrated ejection force can easily lead to excessive local stress in the product, resulting in defects such as whitening, deformation, or even cracking, making it difficult to guarantee a high yield rate. Utility Model Content

[0004] The purpose of this utility model is to provide a pusher plate synchronous ejection mold mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a push plate synchronous ejection mold mechanism, including a mold frame and a fixed mold installed on the side of the mold frame. A moving mold is provided on the side of the fixed mold away from the mold frame. A plurality of ejector pin bodies are evenly arranged inside the mold frame. Each ejector pin body penetrates the surface of the mold frame and the fixed mold and is slidably connected to the mold frame and the fixed mold. A push plate body is fixedly connected to the end of each ejector pin body facing the moving mold, and a receiving assembly is provided above the fixed mold.

[0006] Preferably, the surface of the fixed mold and the corresponding position of the push plate body are provided with an inlay groove, the push plate body is inserted into the inlay groove, and the outer side of the push plate body is consistent with the shape of the mold frame.

[0007] Preferably, a top plate is provided on the side of the mold frame away from the fixed mold. Several guide rods are uniformly fixedly connected to the surface of the fixed mold by bolts. The top plate is slidably connected to the surface of the guide rods. The top plate and the end of the ejector pin body away from the push plate body are in contact with each other. Each guide rod is provided with a tension spring on its surface. The two ends of the tension spring are fixedly connected to the top plate and the mold frame, respectively.

[0008] Preferably, the bottom surface of the fixed mold is symmetrically fixed with two connecting rods by bolts, and a connecting plate is rotatably connected between the two connecting rods by a positioning shaft. The end of the connecting plate away from the connecting rod is rotatably connected with a linkage rod by the positioning shaft. The surface of the moving mold is symmetrically provided with two sliding grooves, and the end of the linkage rod away from the connecting plate is inserted into the sliding groove.

[0009] Preferably, a slider is slidably connected inside the slide groove, and the end of the linkage rod near the slide groove is rotatably connected to the slide groove via a rotating shaft.

[0010] Preferably, after the fixed mold and the moving mold are fully opened, the connecting plate is tilted at a certain angle when it is fully stretched.

[0011] Preferably, the top surface of the connecting plate is provided with a damping plate, and the damping plate is in the form of a grid.

[0012] Preferably, the damping plate is fixedly connected to the connecting plate only at its four corners.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a push plate body to make large-area uniform contact with the injection molded part for ejection, avoiding product deformation or damage that may be caused by localized force on traditional ejector pins; at the same time, the guide rod and tension spring structure ensure a smooth and synchronous ejection process, further ensuring the integrity of the injection molded part during demolding, and significantly improving product consistency and yield.

[0014] 2. This utility model utilizes an expandable inclined receiving plate to automatically receive the injection molded part after demolding, preventing it from falling from a height and causing damage; the grid-like damping plate increases friction to prevent the workpiece from slipping, while the inclined design facilitates the drainage of residual coolant, thus taking into account both protection and drainage functions.

[0015] 3. This utility model uses damping plates that are fixed only at the four corners and are made of high-temperature resistant aramid fiber, which facilitates the cleaning of impurities and liquids, reduces equipment maintenance costs and downtime, and improves production continuity and efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the top plate and ejector pin structure of this utility model; Figure 3 This is a schematic diagram of the connecting plate and damping plate structure of this utility model.

[0017] In the diagram: 1. Mold frame; 2. Fixed mold; 3. Moving mold; 4. Push plate body; 5. Top plate; 6. Ejector pin body; 7. Guide rod; 8. Tension spring; 9. Connecting rod; 10. Connecting plate; 11. Damping plate; 12. Linkage rod; 13. Slide groove. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3 This utility model provides a push-plate synchronous ejection mold mechanism, including a mold frame 1 and a fixed mold 2 installed on the side of the mold frame 1. A movable mold 3 is provided on the side of the fixed mold 2 away from the mold frame 1. A plurality of ejector pin bodies 6 are evenly arranged inside the mold frame 1. Each ejector pin body 6 penetrates the surface of the mold frame 1 and the fixed mold 2 and is slidably connected to the mold frame 1 and the fixed mold 2. A push-plate body 4 is fixedly connected to the end of each ejector pin body 6 facing the movable mold 3. A receiving assembly is provided above the fixed mold 2, and the surface of the fixed mold 2 is flush with the push-plate body 4. Corresponding slots are provided at corresponding positions. The push plate body 4 is inserted into the slot. The outer side of the push plate body 4 is consistent with the shape of the mold frame 1. A top plate 5 is provided on the side of the mold frame 1 away from the fixed mold 2. Several guide rods 7 are evenly fixedly connected to the surface of the fixed mold 2 by bolts. The top plate 5 is slidably connected to the surface of the guide rod 7. The top plate 5 and the end of the ejector pin body 6 away from the push plate body 4 are in contact with each other. A tension spring 8 is provided on the surface of each guide rod 7. The two ends of the tension spring 8 are fixedly connected to the top plate 5 and the mold frame 1 respectively.

[0020] When the moving mold 3 moves away from the fixed mold 2, and the moving mold 3 does not exert force on the ejector plate body 4 through the injection molded part, the tension spring 8 will contract due to elastic potential energy, thereby causing the top plate 5 to move towards the mold frame 1 on the surface of the guide rod 7. Thus, the top plate 5 exerts force on the ejector pin body 6, causing the ejector plate body 4 to slide out from the inside of the insert groove. The ejector plate body 4 then squeezes the injection molded part. Because the contact area between the ejector plate body 4 and the injection molded part increases, the injection molded part will not be damaged.

[0021] Meanwhile, since the outer shape of the ejector plate body 4 is consistent with that of the mold base 1, the ejector plate body 4 can ensure uniform force on the injection molded part during the process of sliding out of the insert groove to extrude the injection molded part. In addition, the guide rod 7 is uniformly fixed to the surface of the fixed mold 2 by bolts, providing reliable support for the stable movement of the top plate 5, making the entire synchronous ejection process of the ejector plate more stable and orderly, ensuring that the quality of the injection molded part is not affected during the demolding process, and effectively improving the product yield.

[0022] In this invention, the bottom surface of the fixed mold 2 is symmetrically fixedly connected to two connecting rods 9 by bolts. A connecting plate 10 is rotatably connected between the two connecting rods 9 by a positioning shaft. The end of the connecting plate 10 away from the connecting rods 9 is rotatably connected to a linkage rod 12 by a positioning shaft. The surface of the moving mold 3 is symmetrically provided with two sliding grooves 13. The end of the linkage rod 12 away from the connecting plate 10 is inserted into the interior of the sliding groove 13. A slider is slidably connected inside the sliding groove 13. The end of the linkage rod 12 near the sliding groove 13 is rotatably connected to the sliding groove 13 by a rotating shaft. When the fixed mold 2 and the moving mold 3 are fully opened, the connecting plate 10 is tilted at a certain angle when fully stretched. A damping plate 11 is provided on the top surface of the connecting plate 10. The damping plate 11 is in the shape of a grid. The damping plate 11 is fixedly connected to the connecting plate 10 only at its four corners.

[0023] During equipment operation, when the fixed mold 2 and the moving mold 3 move relative to each other to achieve the opening action, the two connecting rods 9 remain stable as fixed support points. The connecting plate 10 rotates around the positioning axis as the fixed mold 2 and the moving mold 3 open. The linkage rod 12 connected to the end away from the connecting rod 9 slides in the groove 13 opened on the surface of the moving mold 3 and rotates around the rotating axis. This rotational connection method makes the entire structure more flexible and smooth during movement. When the connecting plate 10 is fully stretched and tilted at a certain angle, the injection molded part will be ejected and fall onto the surface of the connecting plate 10, avoiding damage caused by the injection molded part falling from a height. The slight tilt of the connecting plate 10 can guide the injection molded part to prevent residual water from flowing out. The grid-like damping plate 11 on the top surface of the connecting plate 10 can enhance the friction between the injection molded part and the injection molded part, preventing the injection molded part from slipping off the surface of the connecting plate 10. Since the damping plate 11 is only fixedly connected to the connecting plate 10 at the four corners, it will not affect the flow of water.

[0024] Meanwhile, this design also makes cleaning the surface of the receiving plate 10 easier, because there is a gap between the mesh-like damping plate 11 and the receiving plate 10, preventing impurities and water from accumulating in hard-to-reach corners. After the equipment completes the ejection of the injection molded part, the receiving plate 10 returns to its initial state as the fixed mold 2 and the moving mold 3 close relative to each other. During this process, the linkage rod 12 slides in the opposite direction within the slide groove 13 and rotates around the pivot, while the receiving plate 10 rotates in the opposite direction around the positioning axis, returning to a position relatively compact with the connecting rod 9, preparing for the next opening action. The entire process repeats, ensuring the continuity and stability of injection molding production. Moreover, this structural design results in relatively low wear on the rotating connection parts due to the reasonable mechanical distribution during long-term use, greatly extending the service life of key components, reducing maintenance costs and downtime for repairs, and improving overall production efficiency.

[0025] It should be noted that the damping plate 11 is made of aramid fiber, which is both flexible and heat resistant.

[0026] The use of this utility model involves the following steps: S1: When the moving mold 3 moves away from the fixed mold 2, and the moving mold 3 does not apply force to the ejector plate body 4 through the injection molded part, the tension spring 8 will contract due to elastic potential energy, thereby causing the top plate 5 to move towards the mold base 1 on the surface of the guide rod 7, thereby applying force to the ejector pin body 6 through the top plate 5, causing the ejector plate body 4 to slide out from the inside of the insert groove, and extruding the injection molded part through the ejector plate body 4. Because the contact area between the ejector plate body 4 and the injection molded part increases, the injection molded part will not be damaged. S2: During equipment operation, when the fixed mold 2 and the moving mold 3 move relative to each other to achieve the opening action, the two connecting rods 9 remain stable as fixed support points. The connecting plate 10 rotates around the positioning axis as the fixed mold 2 and the moving mold 3 open. The linkage rod 12 connected to the end away from the connecting rod 9 slides in the groove 13 opened on the surface of the moving mold 3 and rotates around the rotating axis. This rotational connection method makes the entire structure more flexible and smooth during movement. When the connecting plate 10 is fully stretched and tilted at a certain angle, the injection molded part will be ejected and fall onto the surface of the connecting plate 10, avoiding damage caused by the injection molded part falling from a height. The slight tilt of the connecting plate 10 can guide the injection molded part to prevent residual water from flowing out. The grid-like damping plate 11 on the top surface of the connecting plate 10 can enhance the friction between the injection molded part and the injection molded part, preventing the injection molded part from slipping off the surface of the connecting plate 10. Since the damping plate 11 is only fixedly connected to the connecting plate 10 at the four corners, it will not affect the flow of water.

[0027] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A push-plate synchronous ejection mold mechanism, comprising a mold frame (1) and a fixed mold (2) mounted on the side of the mold frame (1), wherein a movable mold (3) is provided on the side of the fixed mold (2) away from the mold frame (1), characterized in that: The mold frame (1) is evenly provided with a number of ejector pin bodies (6). Each ejector pin body (6) penetrates the surface of the mold frame (1) and the fixed mold (2) and is slidably connected to the mold frame (1) and the fixed mold (2). A push plate body (4) is fixedly connected to one end of the ejector pin body (6) facing the moving mold (3), and a receiving component is provided above the fixed mold (2).

2. The push-plate synchronous ejection mold mechanism according to claim 1, characterized in that: Furthermore, the surface of the fixed mold (2) and the corresponding position of the push plate body (4) are provided with inlay grooves, the push plate body (4) is inserted into the inlay groove, and the outer side of the push plate body (4) is consistent with the shape of the mold frame (1).

3. The push-plate synchronous ejection mold mechanism according to claim 1, characterized in that: The mold frame (1) has a top plate (5) on the side away from the fixed mold (2). Several guide rods (7) are evenly fixedly connected to the surface of the fixed mold (2) by bolts. The top plate (5) is slidably connected to the surface of the guide rods (7). The top plate (5) and the end of the ejector pin body (6) away from the push plate body (4) are in contact with each other. Each guide rod (7) has a tension spring (8) on its surface. The two ends of the tension spring (8) are fixedly connected to the top plate (5) and the mold frame (1) respectively.

4. The push-plate synchronous ejection mold mechanism according to claim 1, characterized in that: The bottom surface of the fixed mold (2) is symmetrically fixed with two connecting rods (9) by bolts. A connecting plate (10) is rotatably connected between the two connecting rods (9) by a positioning shaft. A linkage rod (12) is rotatably connected to the end of the connecting plate (10) away from the connecting rods (9) by a positioning shaft. Two sliding grooves (13) are symmetrically opened on the surface of the moving mold (3). The end of the linkage rod (12) away from the connecting plate (10) is inserted into the sliding groove (13).

5. The push-plate synchronous ejection mold mechanism according to claim 4, characterized in that: The slide groove (13) is slidably connected to a slider, and the end of the linkage rod (12) near the slide groove (13) is rotatably connected to the slide groove (13) via a rotating shaft.

6. The push-plate synchronous ejection mold mechanism according to claim 4, characterized in that: After the fixed mold (2) and the moving mold (3) are fully opened, the connecting plate (10) is tilted at a certain angle when it is fully stretched.

7. The pusher plate synchronous ejection mold mechanism according to claim 4, characterized in that: The top surface of the connecting plate (10) is provided with a damping plate (11), and the damping plate (11) is in the form of a grid.

8. The push-plate synchronous ejection mold mechanism according to claim 7, characterized in that: The damping plate (11) is fixedly connected to the connecting plate (10) only at its four corners.

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