Mold ejection device for injection molds

Abstract

The utility model discloses a mould ejection device for injection mould, including lower mould and upper mould, be provided with mould cavity on the lower mould, and the bottom fixed mounting of lower mould has bottom rest stand, and the rotatory mounting of bottom rest stand has the rotating plate, and the rotating plate rotatory connection has the ejection assembly, and the ejection assembly sets up on the lower mould, one side of rotating plate is provided with length adjustment assembly, this mould ejection device for injection mould, after the cooling forming of injection product in mould cavity, the ejection assembly of setting, to the treading pressure plate and carry rotating plate rotation, and the rotating plate rotates and drives the push rod to move, and the push rod moves and drives the bottom connecting plate to move, and drives the ejection column to move up and ejects the product of forming, and the rotating stand sets up the position of being close to the one side of push rod, and the rotating plate utilizes lever principle to use very small force to eject the product of injection moulding at this moment, and it is not necessary to use very big strength.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a mold ejection device for injection molds. Background Technology

[0002] Injection molds are key tools used to produce plastic products. They are formed by injecting molten plastic into the mold cavity, which then cools and solidifies to create the desired product shape. The mold consists of two parts: a moving mold and a fixed mold. The moving mold is mounted on the moving platen of the injection molding machine, while the fixed mold is mounted on the fixed platen. During the injection process, the moving mold and the fixed mold close to form the gating system and the cavity. They separate when the mold is opened to remove the product.

[0003] After injection molding, the cooled and solidified product needs to be removed. Some methods involve workers pulling the product out, which can damage it. Other methods use ejection devices, which are motor-driven, have high installation costs, and require electrical connections. This also makes it difficult to remove the injection molded product quickly. Therefore, a mold ejection device for injection molds is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mold ejection device for injection molds, which solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An ejector device for injection molds includes a lower mold and an upper mold. The lower mold has a cavity. A bottom support is fixedly installed on the bottom of the lower mold. A rotating plate is rotatably installed on the bottom support. An ejector assembly is rotatably connected to the rotating plate. The ejector assembly is installed on the lower mold. A length adjustment assembly is provided on one side of the rotating plate.

[0007] Preferably, the ejection assembly includes multiple ejection columns movably mounted on the lower mold, with an ejection sealing disc fixedly mounted at the top of each ejection column and a common bottom connecting plate fixedly mounted at the bottom of each ejection column.

[0008] Preferably, a sealing groove is provided at the bottom of the mold cavity, an ejection hole is provided at the bottom of the sealing groove, an ejection column is movably installed in the ejection hole, and an ejection sealing plate is located in the sealing groove.

[0009] Preferably, a push rod is rotatably mounted on one end of the rotating plate, and one end of the push rod is rotatably mounted on the bottom of the bottom connecting plate. A return spring is fixedly installed between the bottom connecting plate and the lower mold.

[0010] Preferably, the length adjustment component includes an adjustment groove formed on one side of the rotating plate, an adjustment rod is movably installed on the adjustment groove, one end of the adjustment rod extends outside the adjustment groove and is fixedly installed with a pressing plate, the top of the pressing plate has an arc-shaped structure and is provided with anti-slip strips.

[0011] Preferably, a positioning stud is connected to one side of the rotating plate, and multiple positioning screw holes are opened on one side of the adjusting rod. One end of the positioning stud is threaded into a corresponding positioning screw hole.

[0012] Preferably, a rotating frame is fixedly installed on the bottom placement frame, the rotating plate is rotatably installed on the rotating frame, the rotating frame is located at the end of the rotating plate, and a side hole is opened on one side of the bottom placement frame, through which one side of the rotating plate moves.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: After the injection molded product in the mold cavity cools and solidifies, the ejection component presses the pressure plate, which drives the rotating plate to rotate. After the rotating plate rotates, it drives the push rod to move. The push rod moves the bottom connecting plate, which in turn moves the ejection column to push out the solidified product. The rotating frame is located near the push rod. At this time, the rotating plate uses the lever principle to eject the injection molded product with very little force, without the need for a large force.

[0014] The length adjustment component allows workers to pull the pressure plate outwards to extend the length of the pressure plate, fully utilizing the lever principle. Even with less pressure, the molded product that is difficult to eject can be ejected. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0018] Figure 4 This utility model Figure 2 A schematic diagram of the structure of part A.

[0019] In the diagram: 1. Lower mold; 2. Upper mold; 3. Mold cavity; 4. Bottom support frame; 5. Rotating frame; 6. Rotating plate; 7. Push rod; 8. Bottom connecting plate; 9. Ejector pin; 10. Ejector sealing plate; 11. Sealing groove; 12. Ejector hole; 13. Return spring; 14. Side hole; 15. Adjustment groove; 16. Adjustment rod; 17. Pressing plate; 18. Positioning screw hole; 19. Positioning stud. 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] Example: Refer to Figure 1-4 An ejection device for injection molds includes a lower mold 1 and an upper mold 2. The lower mold 1 has a mold cavity 3. A bottom support 4 is fixedly installed on the bottom of the lower mold 1. A rotating plate 6 is rotatably installed on the bottom support 4. An ejection assembly is rotatably connected to the rotating plate 6. The ejection assembly is mounted on the lower mold 1. A length adjustment component is provided on one side of the rotating plate 6. The ejection assembly includes multiple ejector pins 9 movably mounted on the lower mold 1. An ejection sealing plate 10 is fixedly installed at the top of each ejector pin 9. A common bottom connecting plate 8 is fixedly installed at the bottom of each ejector pin 9. A sealing groove 11 is formed at the bottom of the mold cavity 3. An ejection hole 12 is formed at the bottom of the sealing groove 11. The ejector pins 9 are movably installed in the ejection hole 12. The ejection sealing plate 10 is located in the sealing groove 11. A push rod 7 is rotatably mounted on one end of the rotating plate 6. The bottom connecting plate 8 is rotatably installed at the bottom. A return spring 13 is fixedly installed between the bottom connecting plate 8 and the lower mold 1. After the injection molded product in the mold cavity 3 cools and solidifies, the upper mold 2 is opened. Then, the operator steps on the pressing plate 17. After the pressing plate 17 is pressed, it will drive the rotating plate 6 to rotate. After the rotating plate 6 rotates, it will drive the push rod 7 to move. The push rod 7 moves and drives the bottom connecting plate 8 to move, thereby driving multiple ejector pins 9 to move in the ejector hole 12. The ejector sealing plate 10 ejects the formed product. The multiple ejector pins 9 and ejector sealing plate 10 can evenly eject the formed product. The return spring 13 has a pushing force when not pressing, pushing the bottom connecting plate 8 to move down, so that the ejector sealing plate 10 is in the sealing groove 11, and the top of the ejector sealing plate 10 is flush with the bottom of the mold cavity 3.

[0022] Specifically, a rotating frame 5 is fixedly installed on the bottom placement frame 4, and a rotating plate 6 is rotatably installed on the rotating frame 5. The rotating frame 5 is located at the end of the rotating plate 6. A side hole 14 is opened on one side of the bottom placement frame 4, and one side of the rotating plate 6 moves through the side hole 14. The rotating frame 5 is located near the push rod 7. At this time, the rotating plate 6 uses the lever principle to push out the injection-molded product with very little force, without needing to use a lot of force.

[0023] Specifically, the length adjustment component includes an adjustment groove 15 on one side of the rotating plate 6. An adjustment rod 16 is movably installed on the adjustment groove 15. One end of the adjustment rod 16 extends outside the adjustment groove 15 and is fixedly installed with a pressing plate 17. The top of the pressing plate 17 has an arc-shaped structure and is provided with anti-slip strips. A positioning stud 19 is connected to one side of the rotating plate 6. Multiple positioning screw holes 18 are opened on one side of the adjustment rod 16. One end of the positioning stud 19 is threaded into a corresponding positioning screw hole 18. For products that are difficult to eject, the operator pulls the pressing plate 17 outward, and the adjustment rod 16 moves within the adjustment groove 15. After adjustment, the position of the pressing plate 17 can be moved, and the positioning stud 19 is threaded into a corresponding positioning screw hole 18. The position of the adjusted adjustment rod 16 is then positioned. After the pressing plate 17 is adjusted, its length is increased. The principle of leverage is fully utilized, and the pressing force does not need to be too large to eject the molded product that is difficult to eject.

[0024] In use: After the injection molded product in the mold cavity 3 cools and solidifies, the operator steps on the pressure plate 17 to drive the rotating plate 6 to rotate. The bottom connecting plate 8 moves upward, causing multiple ejector pins 9 to move. The ejector sealing plate 10 ejects the molded product. The rotating frame 5 is located near the push rod 7. At this time, the rotating plate 6 uses the lever principle to eject the injection molded product with very little force. It does not require a lot of force. For products that are difficult to eject, the operator pulls the pressure plate 17 outward, increasing the length of the pressure plate 17. The lever principle is fully utilized. The pressing force does not need to be too great to eject the molded product that is difficult to eject. It is convenient to use.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold ejection device for injection molds, comprising a lower mold (1) and an upper mold (2), characterized in that, The lower mold (1) is provided with a mold cavity (3), and a bottom placement frame (4) is fixedly installed at the bottom of the lower mold (1). A rotating plate (6) is rotatably installed on the bottom placement frame (4), and an ejection assembly is rotatably connected to the rotating plate (6). The ejection assembly is set on the lower mold (1), and a length adjustment assembly is provided on one side of the rotating plate (6).

2. The ejector device for injection molds according to claim 1, characterized in that, The ejection assembly includes multiple ejection columns (9) movably mounted on the lower mold (1). Each ejection column (9) has an ejection sealing plate (10) fixedly mounted on its top end, and the same bottom connecting plate (8) is fixedly mounted on the bottom of the multiple ejection columns (9).

3. The ejector device for injection molds according to claim 2, characterized in that, The bottom of the mold cavity (3) is provided with a sealing groove (11), and the bottom of the sealing groove (11) is provided with an ejection hole (12). The ejection column (9) is movably installed in the ejection hole (12), and the ejection sealing plate (10) is located in the sealing groove (11).

4. The mold ejection device for injection molds according to claim 2, characterized in that, One end of the rotating plate (6) is rotatably mounted with a push rod (7), and one end of the push rod (7) is rotatably mounted on the bottom of the bottom connecting plate (8). A reset spring is fixedly installed between the bottom connecting plate (8) and the lower mold (1).

5. The ejector device for injection molds according to claim 1, characterized in that, The length adjustment assembly includes an adjustment groove (15) opened on one side of the rotating plate (6), an adjustment rod (16) is movably installed on the adjustment groove (15), one end of the adjustment rod (16) extends outside the adjustment groove (15) and is fixedly installed with a pressing plate (17), the top of the pressing plate (17) is an arc-shaped structure and is provided with anti-slip strips.

6. The mold ejection device for injection molds according to claim 5, characterized in that, The rotating plate (6) is connected to a positioning stud (19) on one side, and the adjusting rod (16) has multiple positioning screw holes (18) on one side. One end of the positioning stud (19) is threaded into a corresponding positioning screw hole (18).

7. The mold ejection device for injection molds according to claim 1, characterized in that, A rotating frame (5) is fixedly installed on the bottom placement frame (4). A rotating plate (6) is rotatably installed on the rotating frame (5). The rotating frame (5) is located at the end of the rotating plate (6). A side hole (14) is opened on one side of the bottom placement frame (4). One side of the rotating plate (6) moves through the side hole (14).

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