A plastic toy injection molding device

Abstract

This utility model provides a plastic toy injection molding device, belonging to the field of toy injection molding technology. It includes a set of uprights, with multiple stabilizing rods fixedly connected to the side walls of the uprights. A movable plate is slidably mounted on the stabilizing rods, and a movable sleeve is fixedly connected to the side wall of the movable plate. A first mold is fixedly connected to the movable plate. A stabilizing plate is fixedly connected to the side wall of the uprights, and multiple sliding plates are mounted on the top of the stabilizing plate. Multiple springs are fixedly connected to the ends of the sliding plates, and the ends of the springs are fixedly connected to the side walls of the uprights. A first rack is fixedly connected to the sliding plates. A rotating shaft is rotatably connected to the movable sleeve, and a gear is fixedly mounted on the rotating shaft. Multiple push rods are slidably connected inside the movable sleeve, and a second rack is fixedly connected to the bottom of each push rod. This utility model uses external compressed air to eject the injection molded part located in the mold groove, ensuring that the surface of the injection molded part is not mechanically damaged, which is beneficial to improving the injection molding quality.

Description

Technical Field

[0001] This utility model relates to the field of toy injection molding technology, and more specifically, to a plastic toy injection molding apparatus. Background Technology

[0002] Injection molding of plastic toys is a highly efficient production process widely used in the toy manufacturing industry. Granular plastic raw materials are added to the barrel of an injection molding machine, and the plastic is heated to a molten state by a heating device in the barrel. The molten plastic is then injected rapidly under high pressure into a pre-designed mold cavity. The shape of the mold cavity perfectly matches the target plastic toy. The molten plastic cools and solidifies rapidly within the cavity, resulting in a toy semi-finished product with the same shape as the mold cavity. After the plastic has cooled and solidified, the mold opens, and an ejector device pushes the molded plastic toy out of the mold, thus completing one injection molding cycle. The entire process is highly automated, enabling the rapid and precise production of large quantities of complex-shaped and precisely sized plastic toys, meeting the diverse market demands for toy products.

[0003] In current plastic toy production, commonly used injection molding equipment ejects the molded toy from the mold via a specific ejection mechanism after the injection molding process. However, with prolonged and frequent operation, this ejection method poses a significant risk of scratching the toy. Ejection devices typically consist of ejector pins and other components. After the toy is injection molded, the ejector pins apply force from inside the mold to push the toy out of the mold cavity. With repeated use, the surface of the ejector pins inevitably wears down due to friction, and the originally smooth surface may develop fine scratches, dents, or deformation. When these poorly maintained ejector pins come into contact with newly injection-molded, still relatively fragile plastic toys and apply force to eject them, the defects on the ejector pins can easily leave scratches and abrasions on the toy's surface, severely affecting the toy's appearance quality.

[0004] How to design a plastic toy injection molding device to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a plastic toy injection molding device, which aims to improve the problems mentioned in the background.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a plastic toy injection molding device, including a set of uprights. Multiple stabilizing rods are fixedly connected to the side walls of the uprights. A movable plate is slidably mounted on each stabilizing rod. A movable sleeve is fixedly connected to the side wall of each movable plate. A first mold is fixedly connected to the movable plate. A stabilizing plate is fixedly connected to the side walls of the uprights. Multiple sliding plates are mounted on the top of the stabilizing plate. Multiple springs are fixedly connected to the ends of the sliding plates. The ends of the springs are fixedly connected to the side walls of the uprights. A first rack is fixedly connected to the sliding plates. A rotating shaft is rotatably connected to the movable sleeve. A gear is fixedly mounted on the rotating shaft. Multiple push rods are slidably connected inside the movable sleeve. A second rack is fixedly connected to the bottom of each push rod.

[0008] Preferably, a sliding groove is fixedly provided on the stabilizing plate, and the sliding plate and the stabilizing plate are slidably connected through the sliding groove.

[0009] Preferably, a second mold is provided on one side of the first mold, and the second mold is fitted to the first mold.

[0010] Preferably, the first rack meshes with the gear, and the gear meshes with the second rack.

[0011] Preferably, a plurality of connecting pipes are fixedly provided at the end of the movable plate, and a solenoid valve is fixedly connected to the end of the connecting pipe. The solenoid valve is connected to an external air pump through an air pipe.

[0012] Preferably, a threaded rod is rotatably connected to the support frame, one end of the threaded rod is located inside the movable sleeve, and a plurality of push rods are located on both sides of the threaded rod. The threaded rod and the movable sleeve are connected by a threaded engagement.

[0013] Preferably, the first mold is provided with a mold groove, and a stop bar is slidably provided inside the first mold. The end surface of the stop bar is smoothly transitioned to the inner wall of the mold groove. The stop bar is fixedly connected to the push rod. The diameter of the stop bar is smaller than the diameter of the push rod. An air passage is opened inside the first mold. The air passage is connected to a connecting pipe. One end of the air passage is close to the end of the stop bar.

[0014] The beneficial effects of this utility model are: by the retraction of the moving sleeve, the gear drives the push rod and the stop rod to move, so that the air passage is connected to the mold groove. By controlling the solenoid valve, the external compressed air pushes the injection molded part located in the mold groove out, ensuring that the surface of the injection molded part is not mechanically damaged, which is conducive to improving the injection molding quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a plastic toy injection molding device provided by an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the first mold structure of a plastic toy injection molding device provided by an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the air passage structure of a plastic toy injection molding device provided by an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding plate structure of a plastic toy injection molding device provided by an embodiment of this utility model;

[0020] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Stand; 2. Stabilizing rod; 3. Moving plate; 31. Moving sleeve; 4. First mold; 6. Stabilizing plate; 42. Sliding plate; 43. Spring; 44. First rack; 51. Rotating shaft; 52. Gear; 54. Push rod; 55. Second rack; 41. Sliding groove; 5. Second mold; 7. Connecting pipe; 8. Solenoid valve; 30. Threaded rod; 35. Mold groove; 33. Stop bar; 36. Air passage. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example, refer to Figures 1-5A plastic toy injection molding device includes a set of uprights 1. Multiple stabilizing rods 2 are fixedly connected to the side wall of the uprights 1. A movable plate 3 is slidably arranged on the stabilizing rods 2. A movable sleeve 31 is fixedly connected to the side wall of the movable plate 3. A first mold 4 is fixedly connected to the movable plate 3. A stabilizing plate 6 is fixedly connected to the side wall of the uprights 1. Multiple sliding plates 42 are arranged on the top of the stabilizing plate 6. Multiple springs 43 are fixedly connected to the ends of the sliding plates 42. The ends of the springs 43 are fixedly connected to the side wall of the uprights 1. A first rack 44 is fixedly connected to the sliding plate 42. A rotating shaft 51 is rotatably connected to the movable sleeve 31. A gear 52 is fixedly sleeved on the rotating shaft 51. Multiple push rods 54 are slidably connected inside the movable sleeve 31. A second rack 55 is fixedly connected to the bottom of the push rod 54.

[0024] A sliding groove 41 is fixedly provided on the stabilizing plate 6. The sliding plate 42 is slidably connected to the stabilizing plate 6 through the sliding groove 41. A second mold 5 is provided on one side of the first mold 4. The second mold 5 is fitted to the first mold 4. The first rack 44 is meshed with the gear 52. The gear 52 is meshed with the second rack 55. Multiple connecting pipes 7 are fixedly provided at the end of the moving plate 3. A solenoid valve 8 is fixedly connected to the end of the connecting pipe 7. The solenoid valve 8 is connected to an external air pump through an air pipe. A threaded rod 30 is rotatably connected to the upright frame 1. One end of the threaded rod 30... Located inside the movable sleeve 31, multiple push rods 54 are located on both sides of the threaded rod 30. The threaded rod 30 is connected to the movable sleeve by a threaded engagement. The first mold 4 is provided with a mold groove 35. A stop rod 33 is slidably arranged inside the first mold 4. The end surface of the stop rod 33 is smoothly transitioned to the inner wall of the mold groove 35. The stop rod 33 is fixedly connected to the push rod 54. The diameter of the stop rod 33 is smaller than the diameter of the push rod 54. An air passage 36 is opened inside the first mold 4. The air passage 36 is connected to the connecting pipe 7. One end of the air passage 36 is close to the end of the stop rod 33.

[0025] The working principle of this plastic toy injection molding device is as follows: Since the threaded rod 30 and the movable sleeve 31 are connected by a threaded engagement, by rotating the threaded rod 30, the movable sleeve 31 moves towards the second mold 5, which in turn moves the movable plate 3 and the first mold 4, so that the contact surfaces of the second mold 5 and the first mold 4 are in contact. Molten plastic is injected into the mold groove 35 through the second mold 5, and the molten plastic is formed between the first mold 4 and the second mold 5, thus completing the injection molding process. After injection molding is completed, the threaded rod 30 is rotated in the opposite direction, and the moving sleeve 31 drives the first mold 4 and the second mold 5 to separate. Since the gear 52 meshes with the first rack 44, the moving sleeve 31 causes the gear 52 to rotate when it moves. The second rack 55 drives the push rod 54 to move away from the first mold 4, which in turn drives the stop rod 33 to move, so that the air passage 36 is connected to the mold groove 35. By controlling the solenoid valve 8, external compressed air passes through the connecting pipe 7 and the air passage 36 to reach the mold groove 35, which pushes out the injection molded part located in the mold groove 35, ensuring that the surface of the injection molded part is not mechanically damaged, which is beneficial to improving the injection molding quality.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plastic toy injection molding apparatus, comprising a set of uprights (1), characterized in that, The side wall of the support frame (1) is fixedly connected to multiple stabilizing rods (2), and a movable plate (3) is slidably arranged on the stabilizing rods (2). A movable sleeve (31) is fixedly connected to the side wall of the movable plate (3). A first mold (4) is fixedly connected to the movable plate (3). A stabilizing plate (6) is fixedly connected to the side wall of the support frame (1). Multiple sliding plates (42) are arranged on the top of the stabilizing plate (6). Multiple springs (43) are fixedly connected to the ends of the sliding plates (42). The ends of the springs (43) are fixedly connected to the side wall of the support frame (1). A first rack (44) is fixedly connected to the sliding plate (42). A rotating shaft (51) is rotatably connected to the movable sleeve (31). A gear (52) is fixedly sleeved on the rotating shaft (51). Multiple push rods (54) are slidably connected inside the movable sleeve (31). A second rack (55) is fixedly connected to the bottom of the push rods (54).

2. The plastic toy injection molding apparatus according to claim 1, characterized in that, A sliding groove (41) is fixedly provided on the stabilizing plate (6), and the sliding plate (42) and the stabilizing plate (6) are slidably connected through the sliding groove (41).

3. The plastic toy injection molding apparatus according to claim 1, characterized in that, A second mold (5) is provided on one side of the first mold (4), and the second mold (5) is fitted to the first mold (4).

4. The plastic toy injection molding apparatus according to claim 1, characterized in that, The first rack (44) is meshed with the gear (52), and the gear (52) is meshed with the second rack (55).

5. The plastic toy injection molding apparatus according to claim 1, characterized in that, Multiple connecting pipes (7) are fixedly provided at the end of the movable plate (3), and a solenoid valve (8) is fixedly connected at the end of the connecting pipe (7). The solenoid valve (8) is connected to an external air pump through an air pipe.

6. The plastic toy injection molding apparatus according to claim 1, characterized in that, A threaded rod (30) is rotatably connected to the support frame (1). One end of the threaded rod (30) is located inside the movable sleeve (31). Multiple push rods (54) are located on both sides of the threaded rod (30). The threaded rod (30) and the movable sleeve (31) are connected by a threaded engagement.

7. The plastic toy injection molding apparatus according to claim 5, characterized in that, The first mold (4) is provided with a mold groove (35), and a stop rod (33) is slidably provided inside the first mold (4). The end surface of the stop rod (33) is smoothly connected to the inner wall of the mold groove (35). The stop rod (33) is fixedly connected to the push rod (54). The diameter of the stop rod (33) is smaller than the diameter of the push rod (54). An air passage (36) is opened inside the first mold (4). The air passage (36) is connected to the connecting pipe (7). One end of the air passage (36) is close to the end of the stop rod (33).

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