A built-in synchronous ejection mechanism of an ejection plate

Abstract

The utility model belongs to the field of automobile injection mold, concretely relates to a built-in synchronous ejection mechanism of ejection plate, including inclined jacks, sliding blocks, drag hooks, ejection plates, reverse guide columns and reverse guide column pressing plates, one end of inclined jacks is fixed with one side of ejection plate, the other end connects products, the drag hook is set to two verticals and one end is fixed with one side of ejection plate, the other end side surface respectively with two sliding blocks sliding interface, the inclined guide column is inserted in the sliding block, and the sliding block slides along the inclined guide column, the upper end of two inclined guide columns is inclined to the side close to the drag hook, the reverse guide column is set to several and is movably penetrated on one side of ejection plate, the reverse guide column pressing plate is fixed in one end of reverse guide column, and the left and right sides of ejection plate are symmetrical.The utility model reduces the size of ejection plate, and the form of built-in to the inside of mould is used to avoid the problem of unstable mould action, material, processing, mass production and cost waste caused by big mould and big front mould ejection plate.

Description

Technical Field

[0001] This utility model belongs to the field of automotive injection molds, specifically relating to a synchronous ejection mechanism with an ejector plate concealed within it. Background Technology

[0002] For plastic molds, such as Figure 1 As shown, the front mold product has an undercut feature in the middle area. (As...) Figure 2 As shown, due to space constraints, for this type of product, a sloping ejector structure is typically designed in the front mold, an ejector plate is added to the fixed mold side, and a synchronous pull hook is designed on the outside of the mold to ensure synchronized mold opening and to detach the product by inverting it. For example... Figure 3 As shown, when the mold is relatively large, if the front mold ejector plate is extended to the outside of the mold, the ejector plate will be long and its own strength will be relatively poor. The thickness of the ejector plate needs to be increased, which wastes ejector plate material. At the same time, the ejector plate will be larger and heavier, requiring more force for ejection and reset. Nitrogen springs need to be added for ejection (ordinary springs can be used for small ejector plates). Moreover, the thickness of the ejector plate also needs to be increased, which may require matching a larger mass production machine, resulting in unnecessary machine waste. Utility Model Content

[0003] To address the aforementioned problems in the existing technology, this utility model provides a synchronous ejection mechanism with an internal ejector plate. This mechanism reduces the size of the ejector plate and integrates it into the mold, thereby avoiding instability in mold operation and waste of materials, processing, mass production, and costs caused by a large mold and a large front ejector plate.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a synchronous ejection mechanism with an internal ejection plate, comprising an inclined ejector, a slider, a hook, an ejection plate, a counter-guide post, and a counter-guide post pressure plate. One end of the inclined ejector is fixed to one side of the ejection plate, and the other end is connected to the product. Two hooks are configured vertically, with one end fixed to one side of the ejection plate and the other end slidingly connected to two sliders respectively. An inclined guide post is inserted into the slider, and the slider slides along the inclined guide post. The upper ends of the two inclined guide posts are inclined towards the side closer to the hook. Several counter-guide posts are configured and movably pass through one side of the ejection plate. The counter-guide post pressure plate is fixed to one end of the counter-guide post. The left and right sides of the ejection plate are symmetrical.

[0005] Furthermore, a horizontal notch is provided at one end of the hook, and a protrusion is provided at one end of the slider, with the protrusion connecting to the notch.

[0006] Furthermore, several ejection limiters are fixed on one side of the ejection plate, several ejection springs are embedded on the other side, and several garbage nails are fixed inside the ejection plate.

[0007] Furthermore, a guide sleeve is fitted onto the hook.

[0008] Compared with existing technologies, the advantages of this invention are: This invention minimizes the size of the front mold ejector plate, achieving a concealed ejector plate design. This invention designs a hook and slider in the middle parting surface area of ​​the product, driving the ejection mechanism to pull the undercut core from the product. This eliminates the need for the original external synchronous hook and reset rod in the ejection mechanism, resulting in a cleaner and more aesthetically pleasing mold appearance and a lighter ejector plate. A guide sleeve is designed on the hook, serving as both a guide for the hook and the ejector plate. Furthermore, this invention only requires a standard spring for ejection, with spring reset upon pressure, ensuring stable and reliable mold operation, saving on mold production and mass production costs, and achieving high mass production stability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the product structure of this utility model;

[0010] Figure 2 A schematic diagram showing the extension of the ejector plate of the conventional front mold ejection structure to the outer perimeter of the mold, with a synchronous pull hook structure added to the outer perimeter of the mold.

[0011] Figure 3 This diagram illustrates the layout of the ejector plate on the mold for this technology.

[0012] Figure 4 This is a schematic diagram of the structure of this utility model;

[0013] Figure 5 This is a cross-sectional view of the present invention when it is installed in a mold;

[0014] Figure 6 This is a cross-sectional view of the present invention installed in the mold after the ejector plate has been ejected;

[0015] Figure 7 for Figure 6 Enlarged view of point A, schematic diagram of the slider hook working. 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] like Figure 1 As shown, product 1 has an inverted buckle feature in the middle area. (As indicated...) Figure 2 As shown, for this type of product 1, due to space constraints, a sloping ejector structure is typically designed in the front mold, an ejector plate is added to the fixed mold side, and a synchronous pull hook is designed on the outside of the mold to ensure synchronous mold opening and to detach product 1 by inverting it. For example... Figure 3As shown, when the mold is relatively large, if the front ejector plate is extended to the outside of the mold, the length of the ejector plate will be relatively long. The ejector plate itself has poor strength, so the thickness of the ejector plate needs to be increased. This will result in waste of ejector plate material. At the same time, after the ejector plate is enlarged, it becomes heavier, and more force is required for ejection and resetting. Nitrogen springs need to be added for ejection (ordinary springs can be used for small ejector plates). Moreover, the thickness of the ejector plate also needs to be increased along with the total thickness of the mold, which may require matching with a larger mass production machine, resulting in unnecessary waste of machine equipment.

[0018] Please see Figure 4-7 Based on the above problems, this utility model provides the following technical solution: a synchronous ejection mechanism with an internal ejector plate. This synchronous ejection mechanism is set inside the mold and includes an inclined ejector 2, a slider 3, a hook 4, an ejector plate 6, a guide post 7, and a guide post pressure plate 8. One end of the inclined ejector 2 is fixed to one side below the ejector plate 6, and the other end is connected to the undercut area of ​​the product 1. The hooks 4 are set as two vertical ones, one end of which is fixed to one side below the ejector plate 6, and the other end of which is slidably connected to the two sliders 3 respectively. The hooks 4 drive the ejector plate 6 to move up and down, and then the ejector plate 6 drives the inclined ejector 2 to pull the undercut core out of the product 1. The slider 3 and the hooks 4 are set in the parting surface area in the middle of the product 1. The two sliders 3 can slide on the side of one end of the two hooks 4 respectively. The inclined guide post 12 is inserted and the slider 3 slides along the inclined guide post 12. The inclined guide post 12 is fixed on the fixed mold 14 and does not move. The slider 3 has an inclined hole. The inclined guide post 12 is inserted into the inclined hole and fixed on the fixed mold 14. The two sliders 3 are installed on the moving mold 13. Therefore, the slider 3 can move up and down with the moving mold 13. The upper ends of the two inclined guide posts 12 are inclined towards the pull hook 4. While the slider 3 moves down, it also moves away from the pull hook 4. Finally, the slider 3 is disengaged from the pull hook 4. Several anti-guide posts 7 are set and move through one side of the ejector plate 6. In this embodiment, two anti-guide posts 7 are set on one side of the ejector plate 6 to guide the ejector plate 6. The anti-guide post pressure plate 8 is fixed to one end of the anti-guide post 7. The anti-guide post pressure plate 8 is fixed to the upper end of the anti-guide post 7. To prevent the ejector plate 6 from dislodging from the anti-guide post 7 after resetting, the left and right sides of the ejector plate 6 are symmetrical. The components on one side of the ejector plate 6 are arranged in the above-mentioned manner. The components on the left and right sides of the ejector plate 6 are consistent, and their connection relationship and movement principle are the same.

[0019] The motion process of this utility model is as follows: When the moving mold 13 moves downward, the two sliders 3 are driven downward by the moving mold 13. At this time, the two sliders 3 also move downward along the inclined guide post 12. Therefore, when the sliders 3 move downward, they also move away from the pull hook 4. When the sliders 3 disengage from the pull hook 4, the ejector plate 6 is ejected into place. In addition, during the downward movement of the sliders 3, since the sliders 3 are connected to the side of the pull hook 4, the sliders 3 drive the pull hook 4 to move downward, and then the pull hook 4 drives the ejector plate 6 to move downward. Thus, the inclined ejector 2 on the ejector plate 6 pulls the core of the undercut area in the product 1. When the sliders 3 disengage from the pull hook 4, the ejector plate 6 is ejected into place. This utility model designs the pull hook 4 and slider 3 in the middle parting surface area of ​​the product 1, which drives the ejector mechanism to pull the undercut core of the product 1. Thus, the ejector mechanism eliminates the original synchronous pull hook and reset rod on the outside of the mold. The mold appearance is neat and beautiful, the ejector plate 6 is small in size and light in weight, the mold action is stable and reliable, saving mold production costs and mass production costs, and the mass production stability is high.

[0020] Specifically, one end of the hook 4 has a horizontal notch 41, and one end of the slider 3 has a protrusion 31. The protrusion 31 is connected to the notch 41. When the slider 3 moves downward, the slider 3 gradually disengages from the notch 41.

[0021] Specifically, the ejector plate 6 has several ejection limiters 11 fixed on one side and several ejection springs 9 embedded on the other side. The ejection limiters 11 are set below the ejector plate 6. When installed in the mold, the ejector plate 6 is installed in the clearance space 16 on the runner plate 15. The fixed mold 14 is set below the runner plate 15. When the ejector plate 6 moves downward, the ejection limiters 11 hit the fixed mold 14, and the ejector plate 6 is ejected into place and stops moving. The ejection springs 9 are installed on the top of the ejector plate 6. When installed in the mold, the ejection springs 9 are compressed by the runner plate 15. When the mold is opened, on the one hand, the moving mold 13 moves down and indirectly drives the ejector plate 6 to move down. On the other hand, the ejection springs 9 directly push the ejector plate 6 downward. In this embodiment, only ordinary springs are needed for the ejector springs 6. Several waste nails 10 are fixed inside the ejector plate 6.

[0022] Specifically, a guide sleeve 5 is fitted onto the hook 4, which serves to guide the hook 4 and the ejector plate 6.

[0023] The installation process of this utility model is as follows: First, the guide sleeve 5 is installed into the fixed mold 14, and the hook 4, waste nail 10, and ejection limit 11 are fixed on the ejector plate 6. The ejector plate 6 is installed into the side of the fixed mold 14, then the ejection spring 9 is embedded in the top of the ejector plate 6, then the runner plate 15 is installed, then the anti-guide post 7 is passed through the ejector plate 6 and fixed on the runner plate 15, and then the anti-guide post pressure plate 8 is pressed on the upper end of the anti-guide post 7. The hot runner is installed into the runner plate 15, and then the top plate is installed. At this time, the ejector plate 6 is in the clearance space 16 on the runner plate 15. Then, the inclined ejector 2 and the inclined guide post 12 are installed from the front of the fixed mold 14, wherein the inclined ejector 2 is fixed to the bottom of the ejector plate 6, and the inclined guide post 12 is fixed to the side of the fixed mold 14. Thus, the installation of the side of the fixed mold 14 is completed; finally, the slider 3 on the side of the moving mold 13 is installed, and the installation of this mechanism is completed.

[0024] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A synchronous ejection mechanism with an internal ejection plate, characterized in that, The assembly includes a slanted top (2), a slider (3), a hook (4), an ejector plate (6), a counter-guide post (7), and a counter-guide post pressure plate (8). One end of the slanted top (2) is fixed to one side of the ejector plate (6), and the other end is connected to the product (1). The hooks (4) are set as two vertical ones, one end of which is fixed to one side of the ejector plate (6), and the other end of which is slidably connected to the two sliders (3). A slanted guide post (12) is inserted into the slider (3), and the slider (3) slides along the slanted guide post (12). The upper ends of the two slanted guide posts (12) are inclined towards the side closer to the hooks (4). Several counter-guide posts (7) are set and movably pass through one side of the ejector plate (6). The counter-guide post pressure plate (8) is fixed to one end of the counter-guide post (7). The left and right sides of the ejector plate (6) are symmetrical.

2. The synchronous ejection mechanism with an internal ejection plate according to claim 1, characterized in that, The hook (4) has a horizontal notch (41) at one end, and the slider (3) has a protrusion (31) at one end, with the protrusion (31) connected to the notch (41).

3. The synchronous ejection mechanism with an internal ejection plate according to claim 2, characterized in that, The ejector plate (6) has several ejector limiters (11) fixed on one side and several ejector springs (9) embedded on the other side. Several garbage nails (10) are fixed inside the ejector plate (6).

4. The synchronous ejection mechanism with an internal ejection plate according to claim 1, characterized in that, A guide sleeve (5) is fitted onto the hook (4).

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