Quick color changing device for hot runner

Abstract

The utility model provides a hot runner quick color changing device, which relates to the technical field of hot runner color changing, and comprises an upper template, a lower template and a main runner structure, the middle part of the upper template is provided with the main runner structure, the left side of the main runner structure is provided with a left runner, and the right side of the main runner structure is provided with a right runner; a left runner color changing structure is arranged on the lower side of the left runner, a right runner color changing structure is arranged on the lower side of the right runner, a female die is arranged on the lower side of the upper heating plate, a left lower partition plate and a right lower partition plate are arranged on the upper side of the lower die plate, a lower heat conduction plate is arranged on the upper sides of the lower partition plates, and a male die is arranged on the lower heat conduction plate. A die groove is formed in the upper portion of the convex die, and the upper portion of the die groove is embedded in the concave die. According to the utility model, the main runner structure can be conveniently subjected to shunting and color changing treatment, the opening and closing of the color changing runner can be flexibly controlled, the raw materials of the color changing runner are quickly and smoothly conveyed, the speed and quality of color changing injection molding are favorably guaranteed, and the structure is more flexible, stable and practical.

Description

Technical Field

[0001] This utility model relates to the field of hot runner color changing technology, specifically to a hot runner rapid color changing device. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product.

[0003] The specification of the existing technology (publication number CN217318960U) for a rapid color-changing hot runner structure mentions that "a first molding cavity and a second molding cavity are provided between the upper and lower molds. The second molding cavity is arranged in a ring, and the first molding cavity is located in the middle of the second molding cavity. A partition structure for separating the first and second molding cavities is also provided between the upper and lower molds. A multi-point hot runner injection molding structure for injecting several color liquids into the first and second molding cavities is also provided on the upper side of the upper mold." However, the existing technology's color-changing runner conveys raw materials relatively slowly, which not only affects the injection speed but also does not provide tight control over the color-changing runner, which may result in some color mixing. It is not flexible, stable, or practical. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a hot runner rapid color change device is provided to solve the problems of slow material delivery in the color change runner, which not only affects the injection molding speed, but also results in loose control of the color change runner, which may lead to the mixing of some colors, and is not flexible, stable and practical.

[0005] To achieve the above objectives, a hot runner rapid color-changing device is provided, comprising an upper template, a lower template, and a main runner structure. The main runner structure is provided in the middle of the upper template, with a left runner on the left side and a right runner on the right side. A left runner color-changing structure is provided below the left runner, and a right runner color-changing structure is provided below the right runner. An upper partition is provided on the lower end face of the upper template, and an upper heating plate is provided below the upper partition. A cavity is provided below the upper heating plate. Left and right lower partitions are provided on the upper side of the lower template, and a lower heat-conducting plate is provided above the lower partition. A convex mold is provided on the upper part of the convex mold, and a mold groove is provided on the upper part of the mold groove, which is fitted into the cavity.

[0006] Furthermore, ejector pins are provided on both the left and right sides of the lower heat-conducting plate and the convex mold, with the upper end of the ejector pin pressing against the mold groove, and cold-cutting water pipes are provided in both the convex mold and the die.

[0007] Furthermore, guide sleeves are provided at the four corners of the lower end face of the upper template, and guide rods are provided at the four corners of the upper end face of the lower template, with the upper part of the guide rods fitted into the corresponding guide sleeves on the same side.

[0008] Furthermore, the rear of the right channel color-changing structure is provided with an upper telescopic cylinder, and the front end of the upper telescopic cylinder is fixed with a baffle, which moves within the telescopic cavity. The front of the telescopic cavity is provided with an upper opening, which is connected to the right channel.

[0009] Furthermore, the left and right flow channels, the left flow channel color-changing structure, and the right flow channel color-changing structure are all symmetrical about the center line of the upper template, and the right and left flow channels, the right flow channel color-changing structure, and the left flow channel color-changing structure have the same structural settings.

[0010] Furthermore, the lower end of the upper port is connected to the lower connecting cavity, and the lower end of the lower connecting cavity is connected to multiple flow channels.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. The guide rod and guide sleeve in this utility model facilitate the pressing of the die and the mold together for mold closing, ensuring straight and accurate positioning, which helps to ensure the quality of mold injection and is more efficient and practical.

[0013] 2. In this utility model, the main flow channel structure is divided into two flow channel color-changing structures: a left flow channel and a right flow channel. When using the left flow channel, one set of color injection molding materials can be selected for injection molding, and when using the right flow channel, another set of color injection molding materials can be selected for injection molding. Moreover, the left flow channel color-changing structure and the right flow channel color-changing structure are respectively installed on the lower side of the left flow channel and the right flow channel color-changing structure. The baffle can be pushed by the telescopic cylinder to block at the lower channel interface of the flow channel, and the switch can be flexibly controlled to perform flow channel color-changing injection molding, which is more stable and reliable, and injection molding is more flexible and convenient. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a top view schematic diagram of an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the right channel color-changing structure according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the overall flow channel structure of an embodiment of the present utility model.

[0018] In the diagram: 1. Upper mold plate; 10. Upper partition plate; 11. Upper heating plate; 12. Die; 13. Guide sleeve; 2. Lower mold plate; 20. Lower partition plate; 21. Lower heat-conducting plate; 22. Convex mold; 23. Ejector pin; 24. Mold groove; 25. Guide rod; 3. Cold-cut water pipe; 4. Left runner color-changing structure; 5. Right runner color-changing structure; 50. Upper telescopic cylinder; 51. Baffle plate; 6. Main runner structure; 60. Left runner; 61. Right runner; 62. Upper opening; 63. Lower connecting cavity; 64. Diversion channel; 65. Telescopic cavity. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Specific details such as particular system structures and technologies are provided to facilitate a more thorough understanding of the embodiments of this utility model. The described embodiments are some, but not all, of the embodiments disclosed herein. However, those skilled in the art should understand that the present utility model can also be implemented in other embodiments without these specific details. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0020] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model. Figure 2 This is a top view schematic diagram of an embodiment of the present utility model. Figure 3 This is a schematic diagram of the right channel color-changing structure according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the overall flow channel structure of an embodiment of the present utility model.

[0022] Reference Figures 1 to 4As shown, this utility model provides a hot runner rapid color changing device, including: a hot runner rapid color changing device, including an upper template 1, a lower template 2, and a main runner structure 6. The main runner structure 6 is provided in the middle of the upper template 1, and a left runner 60 is provided on the left side of the main runner structure 6, and a right runner 61 is provided on the right side of the main runner structure 6. A left runner color changing structure 4 is provided on the lower side of the left runner 60, and a right runner color changing structure 4 is provided on the lower side of the right runner 61. The flow channel color-changing structure 5 has an upper partition plate 10 on the lower end face of the upper template 1, an upper heating plate 11 on the lower side of the upper partition plate 10, and a cavity mold 12 on the lower side of the upper heating plate 11. The upper side of the lower template 2 has left and right lower partition plates 20, and the upper side of the lower partition plate 20 has a lower heat-conducting plate 21. A convex mold 22 is provided on the upper part of the lower heat-conducting plate 21, and a mold groove 24 is provided on the upper part of the convex mold 22. The upper part of the mold groove 24 is fitted into the cavity mold 12.

[0023] In this embodiment, ejector pins 23 are provided on both the left and right sides of the lower heat-conducting plate 21 and the convex mold 22, and the upper end of the ejector pin 23 rests on the mold groove 24. Cold cutting water pipes 3 are provided in both the convex mold 22 and the die 12. Guide sleeves 13 are provided at the four corners of the lower end face of the upper template 1, and guide rods 25 are provided at the four corners of the upper end face of the lower template 2. The upper part of the guide rods 25 is fitted into the corresponding guide sleeves 13 on the same side.

[0024] As a preferred embodiment, the guide rod 25 and guide sleeve 13 in this utility model facilitate the pressing of the concave mold 12 and the convex mold 22 together for mold closing, ensuring straight and accurate positioning, which helps to guarantee the quality of mold injection and is more efficient and practical.

[0025] In this embodiment, an upper telescopic cylinder 50 is provided at the rear of the right channel color-changing structure 5, and a baffle 51 is fixed at the front end of the upper telescopic cylinder 50. The baffle 51 moves within the telescopic cavity 65. An upper opening 62 is provided at the front of the telescopic cavity 65, and the upper opening 62 is connected to the right channel 61. The left channel 60 and the right channel 61, the left channel color-changing structure 4 and the right channel color-changing structure 5 are all symmetrical about the center line of the upper template 1, and the right channel 61 and the left channel 60, the right channel color-changing structure 5 and the left channel color-changing structure 4 have the same structural configuration. The lower end of the upper opening 62 is connected to the lower connecting cavity 63, and the lower end of the lower connecting cavity 63 is connected to multiple flow channels 64.

[0026] In a preferred embodiment, the main flow channel structure 6 of this utility model is divided into two flow channel color-changing structures: a left flow channel 60 and a right flow channel 61. The left flow channel 60 can be used to select one set of color injection molding materials for injection molding, while the right flow channel 61 can be used to select another set of color injection molding materials for injection molding. Moreover, the left flow channel 60 and the right flow channel 61 are respectively equipped with a left flow channel color-changing structure 4 and a right flow channel color-changing structure 5 on their lower sides. The baffle can be pushed by a telescopic cylinder to block at the lower channel interface of the flow channel, and the switch can be flexibly controlled to perform flow channel color-changing injection molding, which is more stable and reliable, and the injection molding is more flexible and convenient.

[0027] This invention effectively solves the problems of slow material delivery in existing color-changing flow channels, which not only affects injection molding speed but also results in loose control of the flow channels, potentially leading to the mixing of some colors and making the process inflexible, stable, and practical. This invention facilitates the diversion and color-changing processing of the main flow channel structure, allows for flexible control of the opening and closing of the color-changing flow channels, and ensures fast and smooth material delivery, thus helping to guarantee the speed and quality of color-changing injection molding, making it more flexible, stable, and practical.

[0028] The above embodiments are used to explain and illustrate the present utility model, and not to limit the utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims should be included within the protection scope of the present utility model.

Claims

1. A hot runner rapid color-changing device, characterized in that: The system includes an upper template (1), a lower template (2), and a main flow channel structure (6). The main flow channel structure (6) is provided in the middle of the upper template (1), and a left flow channel (60) is provided on the left side of the main flow channel structure (6), and a right flow channel (61) is provided on the right side of the main flow channel structure (6). A left flow channel color-changing structure (4) is provided on the lower side of the left flow channel (60), and a right flow channel color-changing structure (5) is provided on the lower side of the right flow channel (61). The lower end face of the upper template (1) is provided with an upper... The upper partition (10) is provided with an upper heating plate (11) on the lower side, and a cavity mold (12) is provided on the lower side of the upper heating plate (11). The lower template (2) is provided with left and right lower partitions (20) on the upper side. The lower partition (20) is provided with a lower heat-conducting plate (21) on the upper side. A convex film (22) is provided on the upper side of the lower heat-conducting plate (21). A mold groove (24) is provided on the upper part of the convex film (22), and the upper part of the mold groove (24) is fitted into the cavity mold (12).

2. The hot runner rapid color change device according to claim 1, characterized in that, The lower heat-conducting plate (21) and the convex mold (22) are provided with ejector pins (23) on both the left and right sides, and the upper end of the ejector pin (23) is placed under the mold groove (24). The convex mold (22) and the die (12) are provided with cold cutting water pipes (3).

3. The hot runner rapid color change device according to claim 1, characterized in that, The upper template (1) has guide sleeves (13) at the four corners of the lower end face, and the lower template (2) has guide rods (25) at the four corners of the upper end face, with the upper part of the guide rods (25) fitted into the corresponding guide sleeves (13) on the same side.

4. The hot runner rapid color change device according to claim 1, characterized in that, The rear of the right channel color-changing structure (5) is provided with an upper telescopic cylinder (50), and the front end of the upper telescopic cylinder (50) is fixed with a baffle (51). The baffle (51) moves within the telescopic cavity (65). The front of the telescopic cavity (65) is provided with an upper opening (62), and the upper opening (62) is connected to the right channel (61).

5. A hot runner rapid color-changing device according to claim 1, characterized in that, The left flow channel (60) and right flow channel (61), the left flow channel color-changing structure (4) and the right flow channel color-changing structure (5) are all symmetrical about the center line of the upper template (1), and the right flow channel (61) and left flow channel (60), the right flow channel color-changing structure (5) and the left flow channel color-changing structure (4) have the same structural settings.

6. A hot runner rapid color-changing device according to claim 4, characterized in that, The lower end of the upper port (62) is connected to the lower connecting cavity (63), and the lower end of the lower connecting cavity (63) is connected to multiple flow channels (64).

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