Plastic clothes hanger injection mold

Abstract

The utility model belongs to injection mold technical field especially relates to a kind of plastic clothes hanger injection mold, including mould main body, the mould main body includes fixed mould component and movable mould component, the fixed mould component includes upper fixed plate and fixed mould plate, the upper fixed plate is fixedly installed at the top of fixed mould plate by bolt, the movable mould component includes movable mould plate and lower fixed plate, the lower fixed plate is fixedly installed at the bottom of movable mould plate by mould foot, the fixed mould plate and movable mould plate form the cavity matched with the shape of plastic clothes hanger after mould closing, the cavity includes first cavity, second cavity, third cavity and fourth cavity, the first cavity, second cavity, third cavity and fourth cavity are same structure, pouring system is provided on the fixed mould component, and pouring system includes main runner and branch runner.The utility model is by setting four same cavities of structure, and four plastic clothes hangers can be formed by once injection molding, greatly improve production efficiency, can satisfy the demand of large-scale production.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and relates to a plastic clothes hanger injection mold. Background Technology

[0002] Plastic clothes hangers are widely used in homes, clothing stores, and other settings due to their lightweight, low cost, and corrosion resistance. The production of plastic clothes hangers primarily relies on injection molding, and the structural design of the injection mold directly determines the product's production efficiency, molding quality, and production cost.

[0003] In existing technologies, most plastic hanger injection molds adopt a single-cavity or double-cavity structure, meaning that only one or two plastic hangers can be molded in a single injection process. This mold structure has obvious drawbacks: on the one hand, production efficiency is low, which cannot meet the needs of large-scale production, especially during the peak season of the apparel industry, making it difficult to match production capacity requirements; on the other hand, the energy consumption per unit product of single-cavity or double-cavity molds is high, and the proportion of equipment investment and maintenance costs for the molds allocated to individual products is relatively large, resulting in higher product production costs. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a plastic clothes hanger injection mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A plastic hanger injection mold includes a mold body, which comprises a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes an upper fixed plate and a fixed template. The upper fixed plate is fixedly mounted on the top of the fixed template by bolts. The moving mold assembly includes a moving template and a lower fixed plate. The lower fixed plate is fixedly mounted on the bottom of the moving template by mold feet. After the fixed template and the moving template are closed, a cavity matching the shape of the plastic hanger is formed. The cavity includes a first cavity, a second cavity, a third cavity, and a fourth cavity. The first cavity, the second cavity, the third cavity, and the fourth cavity have the same structure. The fixed mold assembly is provided with a gating system, which includes a main runner and a branch runner. One end of the main runner is connected to the injection molding machine nozzle, and the other end is connected to the first cavity, the second cavity, the third cavity, and the fourth cavity. The branch runner is located at one end of the main runner.

[0006] In the aforementioned plastic hanger injection mold, an ejection mechanism is provided inside the mold body. The ejection mechanism is located on the moving mold assembly. The ejection mechanism includes an ejector plate and an ejector pin. The ejector plate is movably mounted on the moving mold plate, and the ejector pin is fixedly mounted on the ejector plate, with the tip of the ejector pin extending into the cavity.

[0007] In the aforementioned plastic hanger injection mold, the ejector plate is provided with a reset rod. There are four sets of reset rods, and the reset rods are located at the four corners of the ejector plate. One end of the reset rod is fixedly connected to the ejector plate, and the other end passes through the moving template and contacts the fixed template.

[0008] In the aforementioned plastic hanger injection mold, an ejector cover plate is fixed above the ejector plate.

[0009] In the aforementioned plastic hanger injection mold, the surfaces of the ejector plate and ejector cover plate are provided with several mating holes, and a mating rod is installed in the mating hole. The mating rod has a cylindrical structure, the bottom of the mating rod is fixedly connected to the lower fixed plate, and the top of the mating rod is in contact with the bottom of the moving template.

[0010] In the aforementioned plastic hanger injection mold, a cooling system is provided inside the mold body, and the cooling system includes cooling water channels respectively opened in the fixed mold plate and the moving mold plate.

[0011] In the aforementioned plastic hanger injection mold, the cooling water channel extends along the cavity contour and forms a closed-loop structure.

[0012] In the aforementioned plastic hanger injection mold, a guiding mechanism is provided between the fixed mold assembly and the moving mold assembly. The guiding mechanism includes a guide post and a guide sleeve. The guide post is fixedly installed on the fixed mold plate, and the guide sleeve is fixedly installed on the moving mold plate. The guide post and the guide sleeve are in sliding fit.

[0013] In the aforementioned plastic hanger injection mold, the runner has a cross-shaped structure, and the four ends of the runner are respectively connected to the first cavity, the second cavity, the third cavity, and the fourth cavity.

[0014] In the aforementioned plastic hanger injection mold, the first cavity, the second cavity, the third cavity, and the fourth cavity form a square structure.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. This utility model, by setting four identical cavities, can mold four plastic hangers in one injection, which greatly improves production efficiency and can meet the needs of large-scale production. Especially during the peak season of the clothing industry, it can effectively match the capacity requirements. At the same time, since four products are produced at a time, the energy consumption per product is reduced, and the proportion of equipment investment and maintenance costs of the mold allocated to a single product is reduced, thereby reducing the product production cost.

[0016] 2. The reset rod and cooperating rod in the ejection mechanism of this utility model ensure the stability and reliability of the ejection process and avoid damage to the plastic clothes hanger during the ejection process.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the explosion from an upward view of the structure of this utility model.

[0020] Figure 3 This is an exploded view of the present invention from another perspective.

[0021] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 5 This is a partial structural schematic diagram of the present invention.

[0023] In the diagram: 1. Mold body; 2. Fixed mold assembly; 3. Moving mold assembly; 4. Upper fixed plate; 5. Fixed mold plate; 6. Moving mold plate; 7. Lower fixed plate; 8. Mold foot; 9. First cavity; 10. Second cavity; 11. Third cavity; 12. Fourth cavity; 13. Main runner; 14. Sub-runner; 15. Ejector plate; 16. Ejector pin; 17. Reset rod; 18. Mating hole; 19. Mating rod; 20. Ejector cover plate; 21. Cooling water channel; 22. Guide sleeve. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-5 As shown, a plastic hanger injection mold includes a mold body 1. The mold body 1 includes a fixed mold assembly 2 and a moving mold assembly 3. The fixed mold assembly 2 includes an upper fixing plate 4 and a fixed template 5. The upper fixing plate 4 is fixedly installed on the top of the fixed template 5 by bolts. The moving mold assembly 3 includes a moving template 6 and a lower fixing plate 7. The lower fixing plate 7 is fixedly installed on the bottom of the moving template 6 by mold feet 8. After the fixed template 5 and the moving template 6 are closed, a cavity matching the shape of the plastic hanger is formed. The cavity contains... The mold includes a first cavity 9, a second cavity 10, a third cavity 11, and a fourth cavity 12. The first cavity 9, the second cavity 10, the third cavity 11, and the fourth cavity 12 have the same structure. The fixed mold assembly 2 is provided with a gating system. The gating system includes a main runner 13 and a branch runner 14. One end of the main runner 13 is connected to the nozzle of the injection molding machine, and the other end is connected to the first cavity 9, the second cavity 10, the third cavity 11, and the fourth cavity 12. The branch runner 14 is located at one end of the main runner 13.

[0026] Furthermore, the mold body 1 is provided with an ejection mechanism, which is disposed on the moving mold assembly 3. The ejection mechanism includes an ejector plate 15 and an ejector pin 16. The ejector plate 15 is movably mounted on the moving mold plate 6, and the ejector pin 16 is fixedly mounted on the ejector plate 15, with the top end of the ejector pin 16 extending into the cavity.

[0027] In this embodiment, the ejection mechanism ensures that the plastic hanger can be smoothly ejected from the mold after injection molding. When the injection molding process is completed and the mold is opened, the ejector plate 15 moves upward in the moving mold assembly 3. Since the ejector pin 16 is fixedly installed on the ejector plate 15 and its top extends into the cavity, the ejector pin 16 will eject the molded plastic hanger from the cavity.

[0028] Furthermore, the ejector plate 15 is provided with a reset rod 17. There are four sets of reset rods 17, and the reset rods 17 are located at the four corners of the ejector plate 15. One end of the reset rod 17 is fixedly connected to the ejector plate 15, and the other end passes through the moving template 6 and contacts the fixed template 5.

[0029] In this embodiment, after the mold opens and the ejector plate 15 moves upward to eject the plastic hanger, when the mold is ready to close again for the next injection, the reset rod 17 moves downward with the ejector plate 15. Since its other end is in contact with the fixed platen 5, during the mold closing process, the fixed platen 5 will exert a downward pressure on the reset rod 17. This pressure is transmitted to the ejector plate 15 through the reset rod 17, enabling the ejector plate 15 to accurately return to its initial position. This prepares the ejector pin 16 to accurately eject the plastic hanger in the next injection process, ensuring the stability and continuity of the entire injection process.

[0030] Furthermore, an ejector cover plate 20 is fixed above the ejector plate 15.

[0031] In this embodiment, the ejector cover plate 20 mainly serves to protect the ejector pins 16 and 15, preventing molten plastic from splashing onto them during injection molding, thus avoiding damage or affecting their normal operation. Simultaneously, the ejector cover plate 20 also enhances the strength and rigidity of the entire ejection mechanism, making the ejection process more stable and reliable.

[0032] Furthermore, the surfaces of the ejector plate 15 and the ejector cover plate 20 are provided with a plurality of mating holes 18, and a mating rod 19 is installed in the mating hole 18. The mating rod 19 has a cylindrical structure, the bottom of the mating rod 19 is fixedly connected to the lower fixed plate 7, and the top of the mating rod 19 is in contact with the bottom of the moving template 6.

[0033] In this embodiment, the engagement between the mating hole 18 and the mating rod 19 further enhances the stability of the ejector plate 15 during movement. When the ejection mechanism is working, the mating rod 19 provides precise guidance for the ejector plate 15, ensuring that the ejector pin 16 can accurately eject the plastic hanger from the cavity, while avoiding any shaking or jamming that may occur during the movement of the ejector plate 15, thus improving the overall working efficiency of the mold and the product quality.

[0034] Furthermore, a cooling system is provided inside the mold body 1. The cooling system includes cooling water channels 21 respectively opened in the fixed mold plate 5 and the moving mold plate 6. The cooling water channels 21 extend along the cavity contour and form a closed loop structure.

[0035] In this embodiment, during the injection molding process, a cooling medium is introduced into the cooling water channel 21, which can quickly remove the heat generated during the molding of the plastic hanger and make the plastic hanger cool evenly.

[0036] Furthermore, a guiding mechanism is provided between the fixed mold assembly 2 and the moving mold assembly 3. The guiding mechanism includes a guide post and a guide sleeve 22. The guide post is fixedly installed on the fixed mold plate 5, and the guide sleeve 22 is fixedly installed on the moving mold plate 6. The guide post and the guide sleeve 22 are slidably engaged.

[0037] In this embodiment, during the mold closing and opening process, the cooperation between the guide pillar and the guide sleeve 22 can ensure accurate docking of the fixed mold assembly 2 and the moving mold assembly 3, thus guaranteeing the accuracy during mold closing.

[0038] Furthermore, the flow channel 14 has a cross-shaped structure, and the four ends of the flow channel 14 are respectively connected to the first cavity 9, the second cavity 10, the third cavity 11 and the fourth cavity 12.

[0039] In this embodiment, this structure enables the plastic melt to be evenly distributed into each cavity, ensuring that the molding quality of the plastic hanger in each cavity is consistent.

[0040] Furthermore, the first cavity 9, the second cavity 10, the third cavity 11, and the fourth cavity 12 form a square structure, which makes reasonable use of the mold space and makes the mold structure more compact. While meeting the requirement of molding four plastic hangers in one injection, it also facilitates the design and manufacturing of the mold.

[0041] The working principle of this utility model is as follows: In use, this invention first involves closing the fixed mold assembly 2 and the moving mold assembly 3, ensuring a tight fit between the fixed mold plate 5 and the moving mold plate 6. At this point, the first cavity 9, the second cavity 10, the third cavity 11, and the fourth cavity 12 together form a complete plastic hanger molding space. Next, the injection molding machine nozzle injects molten plastic through the main runner 13. The molten plastic flows within the main runner 13 to the branch runner 14. Because the branch runner 14 has a cross-shaped structure, it can evenly distribute the molten plastic into the first cavity 9, the second cavity 10, the third cavity 11, and the fourth cavity 12. During the injection molding process, the cooling system begins operation. The cooling medium in the cooling water channel 21 circulates along the cavity contour, carrying away the heat from the molten plastic and rapidly cooling and solidifying it into shape. After the plastic hangers are formed in the cavity, the moving mold assembly 3 and the fixed mold assembly 2 begin to separate. The ejection mechanism comes into play, and the ejector plate 15 moves upward under the action of power, driving the ejector pin 16 to eject the four formed plastic hangers from the cavity, completing one injection molding process.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0043] Although this document frequently uses terms such as 1. mold body; 2. fixed mold assembly; 3. moving mold assembly; 4. upper fixed plate; 5. fixed template; 6. moving template; 7. lower fixed plate; 8. mold foot; 9. first cavity; 10. second cavity; 11. third cavity; 12. fourth cavity; 13. main runner; 14. branch runner; 15. ejector plate; 16. ejector pin; 17. reset rod; 18. mating hole; 19. mating rod; 20. ejector cover plate; 21. cooling water channel; 22. guide sleeve, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A plastic hanger injection mold, comprising a mold body (1), characterized in that, The mold body (1) includes a fixed mold assembly (2) and a moving mold assembly (3). The fixed mold assembly (2) includes an upper fixed plate (4) and a fixed template (5). The upper fixed plate (4) is fixedly installed on the top of the fixed template (5) by bolts. The moving mold assembly (3) includes a moving template (6) and a lower fixed plate (7). The lower fixed plate (7) is fixedly installed on the bottom of the moving template (6) by mold feet (8). After the fixed template (5) and the moving template (6) are closed, a cavity matching the shape of the plastic hanger is formed. The cavity includes a first cavity (9) and a second cavity. (10), third cavity (11) and fourth cavity (12), the first cavity (9), second cavity (10), third cavity (11) and fourth cavity (12) have the same structure. The fixed mold assembly (2) is provided with a gating system. The gating system includes a main runner (13) and a branch runner (14). One end of the main runner (13) is connected to the injection molding machine nozzle, and the other end is connected to the first cavity (9), second cavity (10), third cavity (11) and fourth cavity (12). The branch runner (14) is located at one end of the main runner (13).

2. The plastic hanger injection mold according to claim 1, characterized in that, The mold body (1) is provided with an ejection mechanism, which is set on the moving mold assembly (3). The ejection mechanism includes an ejector plate (15) and an ejector pin (16). The ejector plate (15) is movably installed on the moving mold plate (6), and the ejector pin (16) is fixedly installed on the ejector plate (15), with the top end of the ejector pin (16) extending into the cavity.

3. The plastic hanger injection mold according to claim 2, characterized in that, The ejector plate (15) is provided with a reset rod (17). There are four sets of reset rods (17), and the reset rods (17) are located at the four corners of the ejector plate (15). One end of the reset rod (17) is fixedly connected to the ejector plate (15), and the other end passes through the moving template (6) and contacts the fixed template (5).

4. The plastic hanger injection mold according to claim 3, characterized in that, A pin cover plate (20) is fixed above the pin plate (15).

5. The plastic hanger injection mold according to claim 4, characterized in that, The surfaces of the ejector plate (15) and ejector cover plate (20) are provided with a plurality of mating holes (18). A mating rod (19) is installed in the mating hole (18). The mating rod (19) is a cylindrical structure. The bottom of the mating rod (19) is fixedly connected to the lower fixing plate (7), and the top of the mating rod (19) is in contact with the bottom of the moving template (6).

6. The plastic hanger injection mold according to claim 5, characterized in that, The mold body (1) is provided with a cooling system, which includes cooling water channels (21) respectively opened in the fixed mold plate (5) and the moving mold plate (6).

7. The plastic hanger injection mold according to claim 6, characterized in that, The cooling water channel (21) extends along the cavity contour and forms a closed loop structure.

8. The plastic hanger injection mold according to claim 7, characterized in that, A guide mechanism is provided between the fixed mold assembly (2) and the moving mold assembly (3). The guide mechanism includes a guide post and a guide sleeve (22). The guide post is fixedly installed on the fixed mold plate (5), and the guide sleeve (22) is fixedly installed on the moving mold plate (6). The guide post and the guide sleeve (22) are in sliding cooperation.

9. The plastic hanger injection mold according to claim 8, characterized in that, The flow channel (14) has a cross-shaped structure, and the four ends of the flow channel (14) are connected to the first cavity (9), the second cavity (10), the third cavity (11) and the fourth cavity (12) respectively.

10. The plastic hanger injection mold according to claim 9, characterized in that, The first cavity (9), the second cavity (10), the third cavity (11) and the fourth cavity (12) form a square structure.

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