Secondary ejection demolding structure of injection mold

Abstract

The utility model discloses a secondary ejection demoulding structure of an injection mould, which relates to the technical field of moulds, and comprises a front fixing plate and a rear fixing plate, a mould main body is arranged between the front fixing plate and the rear fixing plate, the mould main body consists of an upper mould and a lower mould, the upper end of the rear fixing plate is provided with an ejection plate, and the lower end of the rear fixing plate is provided with a lower ejection plate. A sprue is arranged at the upper end of the front fixing plate, a cavity is formed in the upper end of the lower mold, the sprue is communicated with the cavity, an ejection mechanism is arranged at the lower end of the cavity, and the ejection mechanism is fixedly connected with the ejection plate; the utility model discloses a secondary ejection demolding structure of an injection mold. By arranging the top plate and the ejection mechanism, after a product is cooled and formed, the top plate pushes the top column and the female die upwards, then the product is separated from the side face of the cavity, a worker can take materials conveniently, meanwhile, the lower die moves upwards along with upward ejection of the top plate, and the distance between the product and the worker is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a secondary ejection and demolding structure for injection molds. Background Technology

[0002] When producing PC protective cases, the product sticks to the mold during cooling and molding. Traditionally, the material is removed manually. This method is not only inefficient, but also produces defects such as watermarks. This cannot guarantee the processing progress and is not conducive to improving production efficiency and yield.

[0003] Therefore, an injection mold is proposed that can eject the product while lifting the mold, thereby separating the product from the mold, making it easier for workers to handle the material and improving the processing efficiency of the product. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a secondary ejection and demolding structure for injection molds, which solves the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a secondary ejection and demolding structure for an injection mold, comprising a front fixed plate and a rear fixed plate, wherein a mold body is disposed between the front fixed plate and the rear fixed plate, the mold body being composed of an upper mold and a lower mold, a top plate being disposed at the upper end of the rear fixed plate, a nozzle being disposed at the upper end of the front fixed plate, a cavity being disposed at the upper end of the lower mold, the nozzle communicating with the cavity, and an ejection mechanism being disposed at the lower end of the cavity, the ejection mechanism being fixedly connected to the top plate.

[0006] Furthermore, the ejection mechanism includes an ejector pin, which is fixed to the upper end of the top plate. A cavity mold is movably disposed within the cavity, and the upper end of the ejector pin is fixedly connected to the cavity mold. A product is injected into the cavity mold.

[0007] Furthermore, guide rods are slidably inserted at the four corners of the lower end of the lower mold, and springs are sleeved on the guide rods located between the lower mold and the top plate.

[0008] Furthermore, a through hole is provided on the top plate, and a limit rod is fixedly connected to the upper end of the rear fixing plate. The limit rod is slidably disposed within the through hole.

[0009] Furthermore, the upper mold has sliding rods fixedly connected to the four corners at its lower end, and the lower mold has sliding grooves at the four corners at its upper end, with the sliding rods and sliding grooves being matched and correspondingly set.

[0010] Furthermore, there are multiple limiting rods, and they are set with equal spacing.

[0011] Compared with the above-mentioned background technology, the secondary ejection demolding structure of injection mold provided in this application includes an injection mold with very mature technology, and a core component consisting of an ejector plate and an ejection mechanism. Its principle relies on the upward lifting of the ejector plate to eject the lower mold and the product to different heights, with the product at the upper end of the lower mold for easy material handling by the operator.

[0012] This invention provides a secondary ejection and demolding structure for injection molds. Compared with the prior art, it has the following advantages:

[0013] This injection mold features a secondary ejection and demolding structure. By setting up an ejector plate and an ejection mechanism, after the product cools and solidifies, the ejector plate pushes the ejector pin and the cavity upward, thereby separating the product from the side of the cavity and facilitating material removal by the staff. At the same time, the lower mold moves upward as the ejector plate pushes upward, reducing the distance between the product and the staff. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the unfolded upper and lower molds of this utility model;

[0016] Figure 3 This is a schematic diagram of a partial cross-section of the lower mold of this utility model;

[0017] Figure 4 This is a schematic diagram of the lower mold and ejection mechanism of this utility model;

[0018] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Front fixed plate; 2. Upper mold; 3. Lower mold; 4. Top plate; 5. Rear fixed plate; 6. Nozzle; 7. Cavity; 8. Slide rod; 9. Slide groove; 10. Through hole; 11. Limiting rod; 12. Ejector pillar; 13. Die; 14. Guide rod; 15. Spring. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5This utility model provides a technical solution: a secondary ejection and demolding structure for an injection mold, including a front fixed plate 1 and a rear fixed plate 5. A mold body is disposed between the front fixed plate 1 and the rear fixed plate 5. The mold body consists of an upper mold 2 and a lower mold 3. A top plate 4 is disposed at the upper end of the rear fixed plate 5. A nozzle 6 is disposed at the upper end of the front fixed plate 1. A cavity 7 is disposed at the upper end of the lower mold 3. The nozzle 6 is connected to the cavity 7. An ejection mechanism is disposed at the lower end of the cavity 7. The ejection mechanism is fixedly connected to the top plate 4. Plastic solution is injected into the cavity 6. After the plastic solution is injected, it cools and solidifies. The top plate 4 moves upward through the lower end. The top plate 4 is ejected by a cylinder. During ejection, the top plate 4 drives the ejection mechanism upward, which ejects the solidified product, making it easier for workers to remove the product. The height of the lower mold 3 is also increased, further increasing the product removal height and facilitating material handling.

[0022] like Figure 5 As shown, the ejection mechanism includes an ejector pin 12, which is fixed to the upper end of the top plate 4. A cavity mold 13 is movably disposed in the cavity 7. The upper end of the ejector pin 12 is fixedly connected to the cavity mold 13, and the product is injected into the cavity mold 13. When the top plate 4 moves upward, it pushes the ejector pin 12 to move upward. The cavity mold 13 is fixed at the upper end of the ejector pin 12, thereby separating the product from the cavity 7, so that the staff can directly pull the product upward.

[0023] like Figure 4 As shown, guide rods 14 are slidably inserted at the four corners of the lower end of the lower mold 3, and springs 15 are sleeved on the guide rods 14 located between the lower mold 3 and the top plate 4. When the top plate 4 is pushed upward, it first pushes the lower mold 3 through the springs 15. The lower mold 3 moves upward slowly under the limiting action of the guide rods 14, thereby raising the height of the lower mold 3 and reducing the height between the lower mold 3 and the workers.

[0024] like Figure 4 As shown, a through hole 10 is provided on the top plate 4, and a limit rod 11 is fixedly connected to the upper end of the rear fixing plate 5. The limit rod 11 is slidably disposed within the through hole 10. When the top plate 4 moves upward, it is limited by the limit rod 11 fixed at the upper end of the rear fixing plate 5. The limit rod 11 is slidably disposed with the through hole 10, which makes the top plate 4 more stable when it moves upward.

[0025] like Figure 3 As shown, slide rods 8 are fixedly connected to the four corners of the lower end of the upper mold 2, and slide grooves 9 are provided at the four corners of the upper end of the lower mold 3. The slide rods 8 and slide grooves 9 are matched and correspondingly set. The length of the slide rods 8 passes through the lower mold 3, and the slide rods 8 and slide grooves 9 are matched and slid on the lower mold 3, thereby facilitating the opening and closing between the upper mold 2 and the lower mold 3.

[0026] like Figure 4As shown, there are multiple limit rods 11, and they are set at equal intervals; multiple limit rods 11 can make the up-and-down movement of the top plate 4 more stable.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A secondary ejection and demolding structure for an injection mold, comprising a front fixing plate (1) and a rear fixing plate (5), characterized in that, A mold body is provided between the front fixed plate (1) and the rear fixed plate (5). The mold body is composed of an upper mold (2) and a lower mold (3). A top plate (4) is provided at the upper end of the rear fixed plate (5). A nozzle (6) is provided at the upper end of the front fixed plate (1). A cavity (7) is provided at the upper end of the lower mold (3). The nozzle (6) is connected to the cavity (7). An ejection mechanism is provided at the lower end of the cavity (7). The ejection mechanism is fixedly connected to the top plate (4). The ejection mechanism includes an ejector column (12), which is fixed to the upper end of the top plate (4). A cavity mold (13) is movably arranged in the cavity (7). The upper end of the ejector column (12) is fixedly connected to the cavity mold (13). The cavity mold (13) contains a product. Guide rods (14) are slidably inserted at the four corners of the lower end of the lower mold (3), and springs (15) are sleeved on the guide rods (14) located between the lower mold (3) and the top plate (4). The top plate (4) has a through hole (10), and the upper end of the rear fixing plate (5) is fixedly connected to a limiting rod (11), which is slidably positioned within the through hole (10).

2. The secondary ejection and demolding structure for an injection mold according to claim 1, characterized in that, The upper mold (2) has slide rods (8) fixedly connected at the four corners of its lower end, and the lower mold (3) has slide grooves (9) at the four corners of its upper end. The slide rods (8) and slide grooves (9) are matched and correspondingly set.

3. The secondary ejection and demolding structure for an injection mold according to claim 1, characterized in that, The number of limiting rods (11) is multiple, and the spacing between them is equal.

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