Plastic mold ejection mechanism

Abstract

The utility model discloses an ejection mechanism of a plastic mould. The ejection mechanism comprises an upper hanging piece, a lower hanging piece, a first T-shaped sliding block and a first sliding chute, according to the plastic mold ejection mechanism, lower hanging pieces are symmetrically and fixedly connected to the two sides of a connecting plate, the lower hanging pieces upwards slide to penetrate through a mounting bottom plate and then are connected with upper hanging pieces, the upper hanging pieces are fixedly connected to the side wall of an upper mold, first T-shaped sliding blocks are fixedly connected to the side walls of the bottoms of the upper hanging pieces, and first sliding grooves are formed in the positions, corresponding to the first T-shaped sliding blocks, of the lower hanging pieces; the upper hanging piece is movably connected with the lower hanging piece through cooperation of the first T-shaped sliding block and the first sliding groove, in the mold closing and opening process of the upper mold and the lower mold, the connecting plate is lifted and put down through cooperation of the upper hanging piece and the lower hanging piece, and therefore the top plate can be driven by the connecting rod to eject out a product in a mold cavity, extra power is not needed, the top plate is directly pulled out, and the mold closing and opening efficiency is improved. And meanwhile, the top plate is limited by the connecting rod matched with the connecting plate, so that the top plate is effectively prevented from being separated from the mold cavity.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a plastic mold ejection mechanism. Background Technology

[0002] Plastic molds are a type of combined mold used in compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes in the mold's punch, die, and auxiliary molding systems allow for the production of a range of plastic parts of different shapes and sizes.

[0003] In the prior art, published on December 12, 2023 (publication date: CN220163137U), a plastic mold ejection mechanism is proposed, comprising a base plate, with multiple support rods fixedly connected to the upper side of the base plate, and a mold fixedly connected to the upper end of the support rods. A mold cavity is formed on the upper side of the mold, and a top plate is provided on the bottom side wall of the mold cavity. The top plate is slidably connected within the mold cavity. An air guide pipe is fixedly connected to the bottom side wall of the mold, and the air guide pipe communicates with the bottom side wall of the mold cavity through an air guiding mechanism. An air cylinder is fixedly connected to one end of the air guide pipe, and a piston is slidably connected inside the air cylinder. A push rod is fixedly connected to the upper side of the piston. This utility model has a reasonable design and ingenious concept. By designing the piston, air cylinder, compression spring, push rod, and other components to cooperate with each other, airflow can be generated to eject the plastic product from the mold cavity. This ejection mechanism does not require an additional power source, greatly reducing energy consumption and lowering operating costs.

[0004] In the aforementioned prior art, airflow can conveniently eject plastic products from the mold. However, when the product fits too tightly with the mold cavity, the air can be compressed, preventing the product from being ejected. Furthermore, directly ejecting the ejector plate with air can easily cause the ejector plate to detach from the mold cavity. Therefore, a new plastic mold ejection mechanism is proposed to optimize the aforementioned prior art. Utility Model Content

[0005] The purpose of this invention is to provide a plastic mold ejection mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An ejection mechanism for a plastic mold includes an upper mold and a lower mold. The upper mold is positioned above and adapted to the lower mold. A mounting base plate is fixedly connected to the bottom surface of the lower mold. A mold cavity is formed on opposite sides of the upper and lower molds. A top plate, adapted to the bottom of the inner side of the mold cavity on the lower mold, is provided. The top plate slides against the mold cavity. A connecting rod is symmetrically fixedly connected to the bottom surface of the top plate. The connecting rod slides through the lower mold and the mounting base plate and is fixedly connected to a connecting plate. A circular hole for the connecting rod to pass through and slide is formed on both the lower mold and the mounting base plate. The connecting plate is symmetrically fixed with lower hanging parts on both sides. The lower hanging parts slide upward through the mounting base plate and are connected to the upper hanging parts. The mounting base plate has holes for the lower hanging parts to pass through and slide. The upper hanging parts are fixedly connected to the side wall of the upper mold. The bottom side wall of the upper hanging parts is fixedly connected with a first T-shaped slider. The lower hanging parts have a first groove corresponding to the first T-shaped slider. The first T-shaped slider is slidably connected in the first groove. The first T-shaped slider presses against the side wall of the lower hanging parts and slides in contact with the lower hanging parts. The upper hanging parts slide in contact with the lower hanging parts.

[0008] As a further embodiment of this utility model, a mounting plate is fixedly installed on the top surface of the upper mold.

[0009] As a further embodiment of this utility model: a second T-shaped slider is fixedly connected to the top side wall of the lower hanging member, and a second sliding groove is provided on the upper hanging member corresponding to the second T-shaped slider. The second T-shaped slider is slidably connected in the second sliding groove, and the second T-shaped slider presses against the side wall of the upper hanging member and slides in close contact with the upper hanging member.

[0010] As a further embodiment of this utility model: a guide rod is fixedly connected vertically inside the first slide groove, and a stop plate is slidably sleeved on the outer side of the guide rod. A circular hole is opened in the middle of the stop plate for the guide rod to pass through and slide. The stop plate slides against the inner wall of the first slide groove. The guide rod slides through the first T-shaped slider. A circular hole is opened on the first T-shaped slider for the guide rod to pass through and slide. A spring is sleeved on the outer side of the guide rod between the stop plate and the first T-shaped slider.

[0011] As a further embodiment of this utility model: a top rod is symmetrically and fixedly connected to the bottom surface of the abutment plate. The top rod slides through the lower hanging part and the connecting plate. The lower hanging part and the connecting plate are provided with a circular hole for the top rod to pass through and slide. An adjustment plate is fixedly connected to the bottom end of the top rod.

[0012] As a further embodiment of this utility model: an adjusting threaded handle is rotatably connected to the adjusting plate, the adjusting threaded handle is inserted into the connecting plate and the lower hanging part, and threaded holes for threaded connection of the adjusting threaded handle are opened in the connecting plate and the lower hanging part.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, the upper lifting component is movably connected to the lower lifting component through the cooperation of the first T-shaped slider and the first sliding groove. During the mold closing and opening process of the upper and lower molds, the connecting plate is raised and lowered through the cooperation of the upper and lower lifting components. Thus, the product in the mold cavity can be ejected by the connecting rod driving the top plate. No additional power is required. The top plate is directly pulled out and moves stably. At the same time, the top plate is limited by the connecting rod and the connecting plate, which effectively prevents the top plate from detaching from the mold cavity.

[0015] 2. This utility model uses the cooperation of the second Y-shaped slider and the second slide groove to further connect the upper and lower hanging parts, thereby improving the stability of the connection.

[0016] 3. This utility model uses a spring to provide elastic force. When the upper part moves downward, the first T-shaped slider squeezes the spring, pressing the lower part downward, so that the top plate can better fit the bottom inner side of the mold cavity.

[0017] 4. This utility model adjusts the rotation of the threaded handle, and in conjunction with the adjusting rod, adjusts the distance between the adjusting plate and the lower hanging part. This allows the adjusting rod to push the abutment plate upward, thereby controlling the compression elasticity of the spring and conveniently controlling the force on the top plate when it fits against the mold cavity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the ejection mechanism of a plastic mold.

[0019] Figure 2 This is an enlarged view of A in an ejection mechanism of a plastic mold.

[0020] Figure 3 This is a schematic diagram of the opening of the upper and lower molds in a plastic mold ejection mechanism.

[0021] In the diagram: 1. Upper mold; 2. Lower mold; 3. Mounting base plate; 4. Mold cavity; 5. Top plate; 6. Connecting rod; 7. Connecting plate; 8. Lower lifting component; 9. Upper lifting component; 10. First T-shaped slider; 11. First slide groove; 12. Mounting top plate; 13. Second T-shaped slider; 14. Second slide groove; 15. Guide rod; 16. Support plate; 17. Spring; 18. Push rod; 19. Adjusting plate; 20. Adjusting threaded handle. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-3 In this embodiment of the present invention, a plastic mold ejection mechanism includes an upper mold 1 and a lower mold 2. The upper mold 1 is disposed above and adapted to the lower mold 2. A mounting base plate 3 is fixedly connected to the bottom surface of the lower mold 2. A mold cavity 4 is formed on the opposite sides of the upper mold 1 and the lower mold 2. A top plate 5 adapted to the bottom of the inner side of the mold cavity 4 on the lower mold 2 is provided. The top plate 5 slides and fits into the mold cavity 4. A connecting rod 6 is symmetrically fixedly connected to the bottom surface of the top plate 5. The connecting rod 6 slides through the lower mold 2 and the mounting base plate 3 and is fixedly connected to a connecting plate 7. A connecting plate 7 is formed on the lower mold 2 and the mounting base plate 3 for the connecting rod 6 to pass through and slide. The connecting plate 7 has a circular hole, and the two sides of the connecting plate 7 are symmetrically fixedly connected to the lower hanging parts 8. The lower hanging parts 8 slide upward through the mounting base plate 3 and are connected to the upper hanging parts 9. The mounting base plate 3 has a hole for the lower hanging parts 8 to pass through and slide. The upper hanging parts 9 are fixedly connected to the side wall of the upper mold 1. The bottom side wall of the upper hanging parts 9 is fixedly connected to the first T-shaped slider 10. The lower hanging parts 8 has a first groove 11 corresponding to the first T-shaped slider 10. The first T-shaped slider 10 is slidably connected in the first groove 11. The first T-shaped slider 10 presses against the side wall of the lower hanging parts 8 and slides in contact with the lower hanging parts 8. The upper hanging parts 9 slide in contact with the lower hanging parts 8.

[0024] The upper lifting component 9 is movably connected to the lower lifting component 8 through the cooperation of the first T-shaped slider 10 and the first sliding groove 11. During the mold closing and opening process of the upper mold 1 and the lower mold 2, the connecting plate 7 is raised and lowered through the cooperation of the upper lifting component 9 and the lower lifting component 8. Thus, the product in the mold cavity 4 can be ejected by the connecting rod 6 driving the top plate 5. No additional power is required. The top plate 5 is directly pulled out and moves stably. At the same time, the top plate 5 is limited by the connecting rod 6 and the connecting plate 7, which effectively prevents the top plate 5 from detaching from the mold cavity 4.

[0025] A mounting plate 12 is fixedly installed on the top surface of the upper mold 1.

[0026] The top side wall of the lower suspension member 8 is fixedly connected to a second T-shaped slider 13. The upper suspension member 9 is provided with a second groove 14 corresponding to the second T-shaped slider 13. The second T-shaped slider 13 is slidably connected in the second groove 14. The second T-shaped slider 13 presses against the side wall of the upper suspension member 9 and slides in close contact with the upper suspension member 9.

[0027] The cooperation of the second Y-shaped slider 13 and the second slide groove 14 further connects the upper hanging part 9 and the lower hanging part 8, improving the stability of the connection.

[0028] A guide rod 15 is fixedly connected vertically inside the first slide groove 11. A stop plate 16 is slidably sleeved on the outer side of the guide rod 15. A round hole is opened in the middle of the stop plate 16 for the guide rod 15 to pass through and slide. The stop plate 16 slides against the inner wall of the first slide groove 11. The guide rod 15 slides through the first T-shaped slider 10. A round hole is opened on the first T-shaped slider 10 for the guide rod 15 to pass through and slide. A spring 17 is sleeved on the outer side of the guide rod 15 between the stop plate 16 and the first T-shaped slider 10.

[0029] The spring 17 provides elastic force, and when the upper hanging part 9 moves downward, the first T-shaped slider 10 squeezes the spring, pressing the lower hanging part 8 downward, so that the top plate 5 can fit better against the bottom inner side of the mold cavity 4.

[0030] A top rod 18 is symmetrically and fixedly connected to the bottom surface of the support plate 16. The top rod 18 slides through the lower hanging part 8 and the connecting plate 7. The lower hanging part 8 and the connecting plate 7 are provided with round holes for the top rod 18 to pass through and slide. An adjusting plate 19 is fixedly connected to the bottom end of the top rod 18.

[0031] An adjusting threaded handle 20 is rotatably connected to the adjusting plate 19. The adjusting threaded handle 20 is inserted into the connecting plate 7 and the lower hanging part 8. The connecting plate 7 and the lower hanging part 8 are provided with threaded holes for threaded connection of the adjusting threaded handle 20.

[0032] By adjusting the rotation of the threaded handle 20, and in conjunction with the distance between the adjusting plate 9 and the lower hanging part 8 by the ejector rod 18, the abutment plate 16 is pushed upward by the ejector rod 18, thereby controlling the compression elasticity of the spring 17 and conveniently controlling the force on the top plate 5 and the mold cavity 4.

[0033] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A plastic mold ejection mechanism, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) is positioned above the lower mold (2) and is adapted to the lower mold (2). The bottom surface of the lower mold (2) is fixedly connected to a mounting base plate (3). The upper mold (1) and the lower mold (2) are provided with a mold cavity (4) on opposite sides. The bottom of the inner side of the mold cavity (4) on the lower mold (2) is provided with a top plate (5) adapted to it. The top plate (5) slides and fits into the mold cavity (4). The bottom surface of the top plate (5) is symmetrically fixedly connected to a connecting rod (6). The connecting rod (6) slides through the lower mold (2) and the mounting base plate (3) and is then fixedly connected to a connecting plate (7). The two sides of the connecting plate (7) are symmetrically fixedly connected to... A lower hanging part (8) is attached. The lower hanging part (8) slides upward through the mounting base plate (3) and is connected to an upper hanging part (9). The upper hanging part (9) is fixedly connected to the side wall of the upper mold (1). A first T-shaped slider (10) is fixedly connected to the bottom side wall of the upper hanging part (9). A first groove (11) is opened on the lower hanging part (8) corresponding to the first T-shaped slider (10). The first T-shaped slider (10) is slidably connected in the first groove (11). The first T-shaped slider (10) presses against the side wall of the lower hanging part (8) and slides in contact with the lower hanging part (8). The upper hanging part (9) slides in contact with the lower hanging part (8).

2. The ejection mechanism for a plastic mold according to claim 1, characterized in that: The top surface of the upper mold (1) is fixedly installed with a mounting plate (12).

3. The ejection mechanism for a plastic mold according to claim 1, characterized in that: The top side wall of the lower hanging member (8) is fixedly connected to a second T-shaped slider (13), and a second groove (14) is provided on the upper hanging member (9) corresponding to the second T-shaped slider (13). The second T-shaped slider (13) is slidably connected in the second groove (14), and the second T-shaped slider (13) presses against the side wall of the upper hanging member (9) and slides in close contact with the upper hanging member (9).

4. The ejection mechanism for a plastic mold according to claim 1, characterized in that: A guide rod (15) is fixedly connected vertically inside the first groove (11). A stop plate (16) is slidably sleeved on the outside of the guide rod (15). The guide rod (15) slides through the first T-shaped slider (10). A spring (17) is sleeved on the outside of the guide rod (15) between the stop plate (16) and the first T-shaped slider (10).

5. The ejection mechanism for a plastic mold according to claim 4, characterized in that: The bottom surface of the abutment plate (16) is symmetrically and fixedly connected to a top rod (18), which slides through the lower hanging part (8) and the connecting plate (7). The bottom end of the top rod (18) is fixedly connected to an adjusting plate (19).

6. The ejection mechanism for a plastic mold according to claim 5, characterized in that: An adjusting threaded handle (20) is rotatably connected to the adjusting plate (19). The adjusting threaded handle (20) is inserted into the connecting plate (7) and the lower hanging part (8). The connecting plate (7) and the lower hanging part (8) are provided with threaded holes for threaded connection of the adjusting threaded handle (20).

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