Injection mold with efficient heating and cooling functions
By using a modular design for heating and cooling channels, combined with matrix and spiral cooling water pipes, the problem of low heating and cooling efficiency in traditional injection molds is solved, achieving efficient heat transfer and improved product quality.
Patent Information
- Application Number
- CN202422539332.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The heating and cooling efficiency of traditional injection molds is low, resulting in slow heat transfer and uneven heating and cooling, which affects production cycle and product quality.
The heating and cooling channels are designed with a splicing structure, combined with matrix and spiral cooling water pipes, and equipped with heating elements and limiting rings to ensure heating uniformity and cooling efficiency.
It improves the heating and cooling efficiency of the mold, ensures uniform heat transfer, shortens the production cycle, and enhances product quality and service life.
Smart Images
Figure CN223478263U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of injection molding equipment, and in particular to an injection mold with efficient heating and cooling. Background Technology
[0002] Injection molds are widely used in manufacturing. During the injection molding process, mold temperature control is crucial. This involves not only heat dissipation but also reheating the mold when it gets too low, placing high demands on both heating and cooling. Mold cooling and heat dissipation are essential for improving production efficiency and product quality. Traditional injection molds typically use linear cooling channels and external electric heating. This results in low heating and cooling efficiency, preventing heating and cooling elements from effectively conforming to the shape of the molded part. Consequently, heat transfer is slow, feedback time is long, and uneven heating and cooling occurs, extending production cycles and potentially affecting product quality. Furthermore, it can impact the internal shape and structure of the molded part, leading to inconsistent hardness across different parts. Utility Model Content
[0003] In order to improve the heat transfer efficiency of heating and cooling, and thus improve production efficiency and product quality, this application provides an injection mold with high-efficiency heating and cooling.
[0004] This application provides an injection mold with high-efficiency heating and cooling, employing the following technical solution:
[0005] An efficient heating and cooling injection mold includes an upper mold plate, a lower mold plate, and an intermediate mold plate. The upper mold plate, the lower mold plate, and the intermediate mold plate together form a spliced cavity. A cooling channel is opened inside the intermediate mold plate, and a heat dissipation element is installed in the cooling channel. The upper mold plate, the lower mold plate, and the intermediate mold plate are spliced together to form a heating channel, and a heating element is installed in the heating channel.
[0006] By adopting the above technical solution, the heating channel and the spliced cavity are designed as a single unit, providing an installation position for the mold heating, allowing the mold to achieve a heating effect by installing heating elements. The spliced cavity design facilitates mold opening, and the cavity is located on the upper and lower mold plates, which helps the cavity dissipate heat through these plates. A cooling channel is provided inside the middle mold plate, and cooling elements are installed within the cooling channel. The cooling channel is used to install the cooling elements, and through the placement of the cooling elements, the technical effect of cooling the mold is achieved.
[0007] In a specific feasible implementation, the heating channel includes a heating channel A respectively opened on one side of the upper template and the lower template close to the middle template. The heating channel further includes heating channel B opened at both ends of the middle template. The heating channel is formed by the mutual buckling of the heating channel A and the heating channel B. The shape of the heating channel is set as a "square" shape, and a socket groove is externally communicated and opened on the heating channel.
[0008] By adopting the above technical solution, the heating channel is set to be formed by the mutual buckling of the heating channel A and the heating channel B, so that the heating channel can achieve the technical effect of opening and closing, which is convenient for the installation and disassembly of the heating element and helps the mold to achieve the technical effect of heating.
[0009] In a specific feasible implementation, the heating element includes heating tubes. There are multiple heating tubes, and the multiple heating tubes are respectively inserted into the heating channel from the socket groove. A limiting ring is fixedly arranged at the position of the middle template corresponding to the socket groove.
[0010] By adopting the above technical solution, the limiting ring plays a fixing role on the heating element. Through the setting of the limiting ring, the heating element can be prevented from falling.
[0011] In a specific feasible implementation, the heat dissipation element includes a matrix cooling water pipe. The cooling channel is set according to the shape of the matrix cooling water pipe. The matrix cooling water pipe includes a main cooling part arranged as a rectangular closed-loop passage. Cooling branch pipes are respectively communicated at the four corners of the main cooling part. There are multiple matrix cooling water pipes arranged vertically, and the cooling branch pipes are opened to the outside of the middle template.
[0012] The heat dissipation element further includes a spiral cooling water pipe. The spiral cooling water pipe includes a spiral part and a branch pipe joint. The spiral part is set as a spiral pipeline, and the branch pipe joint is integrally communicated with the upper and lower ends of the spiral part. The branch pipe joint is opened to the outside of the middle template.
[0013] By adopting the above technical solution, through the setting of the matrix cooling water pipe, there are multiple matrix cooling water pipes arranged vertically, and the spiral cooling water pipes are spirally distributed. Both can increase the cooling area of the mold. Through the setting of the matrix shape and the spiral shape, the heat dissipation element can adapt to the shape of the cavity and improve the efficiency of cooling conduction.
[0014] In a specific feasible implementation, the spliced cavity includes a cavity A opened on the upper template, a cavity B opened on the lower template, and a cavity C in the shape of a channel opened on the middle template. Sealing gaskets are arranged between the cavity A, the cavity B, and the cavity C.
[0015] By adopting the above technical solution and setting the sealing gasket, the shortcomings of insufficient sealing of the splicing cavity can be compensated, so that the sealing of the splicing cavity can still be guaranteed when the upper and lower templates are closed.
[0016] In one specific implementation scheme, injection holes are provided on the upper template, lower template and intermediate template. The injection holes include injection hole A and injection hole C. Injection hole A is vertically opened from the top of the upper template and communicates with the cavity A. Injection hole C is vertically opened from the bottom of the lower template and communicates with the cavity C.
[0017] By adopting the above technical solution, injection holes A and C are vertically opened in the upper and lower templates respectively, which can achieve the technical effect of multi-angle injection molding of the cavity.
[0018] In one specific implementation scheme, the side walls of the upper and lower templates are fixedly provided with slide blocks, the slide blocks are provided with sliding holes, and limit posts are slidably arranged in the sliding holes.
[0019] By adopting the above technical solution, the sliding hole and sliding block enable the upper and lower templates to slide up and down through the limiting pins, thereby achieving the technical effects of mold opening and mold closing.
[0020] In summary, this application includes at least one of the following beneficial technical effects:
[0021] 1. The heating channels and heating elements are designed with a spliced structure, positioned on the upper, lower, and middle templates. This design provides ample installation space for the mold heating, making the installation and removal of heating elements simple and convenient. The "U"-shaped heating channel design, with heating channels A and B interlocking, achieves the mold heating function. This design not only improves heating efficiency but also enhances mold stability. Multiple heating elements are inserted into the heating channels through slots and secured by limiting rings. The limiting rings slightly lift the heating elements, resulting in more uniform heating, preventing localized overheating, and extending the mold's lifespan.
[0022] 2. By setting up heat dissipation elements, a larger cooling area is ensured and the heat conduction efficiency is improved. At the same time, the cooling water can circulate inside the mold, further improving the heat dissipation effect. Attached Figure Description
[0023] Figure 1 This is an overall schematic diagram of Example 1;
[0024] Figure 2 , Figure 3 and Figure 4This is a structural diagram of the upper template, middle template, and lower template;
[0025] Figure 5 This is an overall schematic diagram of Example 2;
[0026] Figure 6 This is a schematic diagram of the specific structure of the spiral cooling water pipe;
[0027] Figure 7 This is a schematic diagram of the specific structure of the matrix cooling water pipe;
[0028] Figure 8 This is a perspective view of the cooling channel structure in Example 1;
[0029] Figure 9 This is a perspective view of the cooling channel structure in Example 2.
[0030] Explanation of reference numerals in the attached drawings: 1. Upper template; 2. Middle template; 21. Cavity A; 22. Cavity B; 23. Cavity C; 251. Heating channel A; 252. Heating channel B; 26. Cooling channel; 3. Matrix cooling water pipe; 31. Main cooling section; 32. Cooling branch pipe; 4. Spiral cooling water pipe; 41. Spiral section; 42. Branch pipe joint; 5. Heating element; 6. Limiting ring; 7. Lower template; 71. Injection hole A; 72. Injection hole C; 8. Slide seat; 81. Sliding hole; 82. Limiting post. Detailed Implementation
[0031] The following is combined with Figures 1-9 This application is described in further detail.
[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] This application discloses an injection mold with efficient heating and cooling.
[0034] Example 1
[0035] Reference Figure 1 , refer to Figure 1-Figure 4The mold includes an upper template 1, a lower template 7, and an intermediate template 2. The upper template 1 and the lower template 7 engage with the upper and lower surfaces of the intermediate template 2, respectively. Slide blocks 8 are fixedly installed on the side walls of the upper template 1 and the lower template 7. Slide blocks 81 are provided on the slide blocks 8, and limit posts 82 are slidably installed within the slide holes 81. Both the upper template 1 and the lower template 7 are connected to a driving device. The driving device causes the upper template 1 and the lower template 7 to move vertically along the limit posts 82, thereby achieving the technical effects of mold opening and closing.
[0036] The upper template 1, lower template 7, and middle template 2 together form a spliced cavity. The spliced cavity includes cavity A21 on the upper template 1, cavity B22 on the lower template 7, and a channel-shaped cavity C23 on the middle template 2. Cavities A21, B22, and C23 together form the spliced cavity, with cavity B22 serving as the main body and having a larger volume than cavities A21 and C23. The spliced design of the cavities facilitates processing and manufacturing on the upper template 1, middle template 2, and lower template 7, reducing manufacturing costs. To compensate for the poor sealing effect of the spliced design, a sealing gasket is provided between cavities A21, B22, and C23 to improve the overall sealing effect of the spliced cavity.
[0037] Reference Figure 6 and Figure 8 The intermediate template 2 has a cooling channel 26 inside, and a heat dissipation element is installed in the cooling channel 26. The upper template 1, lower template 7, and intermediate template 2 are spliced together to form a heating channel, which is equipped with a heating element. The heating element includes a heating tube 5. To facilitate the installation of the heating tube 5, the heating channel is set as a splicing channel. The heating channel includes heating channels A251 respectively opened on the side of the upper template 1 and lower template 7 near the intermediate template 2, and heating channels B252 opened at both ends of the intermediate template 2. The heating channel is formed by the interlocking of heating channels A251 and heating channels B252. The upper template 1 and lower template 7 move up and down along the limiting post 82 to open and close the heating channel. When the heating channel is open, the heating tube 5 is installed. The overall shape of the heating channel is a non-interconnected "U" shape. The heating channel has an insertion slot that is larger than the width of the heating channel. Multiple insertion slots are provided. The heating element 5 is set to conventional. In this embodiment, there are 8 heating elements 5 according to the number of insertion slots. The 8 heating elements 5 are inserted into the corresponding heating channels from the insertion slots. A step is formed between the insertion slot and the heating channel. A limiting ring 6 is fixedly set at the insertion slot of the intermediate template 2. The diameter of the limiting ring 6 is matched with the insertion slot. The insertion slot is used to limit the heating element 5. When the heating element 5 is inserted, it can prevent the heating element 5 from extending too far into the heating channel and causing collision. The limiting ring 6 fixes the heating element 5 to prevent the heating element 5 from falling off.
[0038] The heat dissipation element includes a matrix cooling water pipe 3, and cooling channels 26 are arranged according to the shape of the matrix cooling water pipe 3. The matrix cooling water pipe 3 includes a main cooling section 31 arranged as a rectangular closed loop. Cooling branch pipes 32 are connected to the four corners of the main cooling section 31. Multiple matrix cooling water pipes 3 are vertically arranged, and the cooling branch pipes 32 extend to the outside of the intermediate template 2. The cooling branch pipes 32 are connected to external pipes and are used to transport coolant. In this embodiment, the coolant is water. Two of the four cooling branch pipes 32 are used for water inlet, and two are used for water outlet. The cooling branch pipes 32 used for water inlet and outlet are all on the same side.
[0039] Injection holes are provided on the upper mold plate 1, lower mold plate 7, and middle mold plate 2. These injection holes include injection hole A71 and injection hole C72. Injection hole A71 is vertically opened from the top of the upper mold plate 1 and communicates with cavity A21. Injection hole C72 is vertically opened from the bottom of the lower mold plate 7 and communicates with cavity C23. The vertical arrangement of the injection holes allows for simultaneous injection into the cavity, resulting in more uniform molding of the molded parts.
[0040] The implementation principle of Example 1 is as follows: When using the high-efficiency heating and cooling injection mold of this application for injection molding, the matrix cooling water pipes 3 are used to water cool the cavity. Multiple matrix cooling water pipes 3 are vertically arranged to improve the efficiency of heat dissipation and cooling of the cavity. The cavity is heated by the heating tubes 5, thereby achieving the technical effect of high-efficiency heating and cooling of the injection mold.
[0041] Example 2
[0042] Reference Figure 7 and Figure 9 The heat dissipation element also includes a spiral cooling water pipe 4, which includes a spiral part 41 and a branch pipe joint 42. The spiral part 41 is configured as a spiral pipe, and the branch pipe joint 42 is integrally connected to the upper and lower ends of the spiral part 41. The branch pipe joint 42 extends to the outside of the intermediate template 2. The branch pipe joint 42 is used to connect to external pipes and serves as a water inlet and outlet.
[0043] The implementation principle of Example 2 is as follows: the spiral-shaped pipeline can increase the heat dissipation area of the cavity by spiraling, thereby improving the heat dissipation efficiency of the mold.
[0044] The embodiments described above merely illustrate the implementation of the utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the protection scope of this application.
Claims
1. An injection mold with high-efficiency heating and cooling, characterized in that: It includes an upper template (1), a lower template (7) and an intermediate template (2). The upper template (1), the lower template (7) and the intermediate template (2) jointly form a splicing cavity. A cooling channel (26) is provided inside the intermediate template (2), and a heat dissipation element is arranged in the cooling channel (26). The upper template (1), the lower template (7) and the intermediate template (2) jointly form a heating channel, and a heating element is arranged in the heating channel.
2. The injection mold for high-efficiency heating and cooling according to claim 1, characterized in that: The heating channel includes a heating channel A (251) respectively opened on one side of the upper template (1) and the lower template (7) close to the intermediate template (2). The heating channel also includes heating channels B (as shown in FIG. 2) opened at both ends of the intermediate template (2). The heating channel is formed by the mutual buckling of the heating channel A (251) and the heating channel B (252). The shape of the heating channel is set as a "mouth" shape, and an insertion socket groove is opened outwardly and communicated with the heating channel.
3. The injection mold for high-efficiency heating and cooling according to claim 2, characterized in that: The heating element includes a heating tube (5). There are multiple heating tubes (5). The multiple heating tubes (5) are respectively inserted into the heating channel from the insertion socket groove. A limiting ring (6) is fixedly arranged at the position of the intermediate template (2) corresponding to the insertion socket groove.
4. The injection mold with high-efficiency heating and cooling according to claim 1, characterized in that: The heat dissipation element includes a matrix cooling water pipe (3). The cooling channel (26) is set according to the shape of the matrix cooling water pipe (3). The matrix cooling water pipe (3) includes a main cooling part (31) arranged as a rectangular closed-loop passage. Cooling branch pipes (32) are respectively communicated at the four corners of the main cooling part (31). There are multiple matrix cooling water pipes (3) arranged vertically, and the cooling branch pipes (32) are opened to the outside of the intermediate template (2).
5. The injection mold for high-efficiency heating and cooling according to claim 1, characterized in that: The heat dissipation element also includes a spiral cooling water pipe (4). The spiral cooling water pipe (4) includes a spiral part (41) and a branch pipe joint (42). The spiral part (41) is set as a spiral pipeline. The branch pipe joint (42) is integrally communicated with the upper and lower ends of the spiral part (41). The branch pipe joint (42) is opened to the outside of the intermediate template (2).
6. The injection mold for high-efficiency heating and cooling according to claim 2, characterized in that: The splicing cavity includes a cavity A (21) opened on the upper template (1), a cavity B (22) opened on the lower template (7) and a cavity C (23) in the shape of a channel opened on the intermediate template (2). A sealing gasket is arranged between the cavity A (21), the cavity B (22) and the cavity C (23).
7. The injection mold for high-efficiency heating and cooling according to claim 6, characterized in that: Injection holes are opened on the upper template (1), the lower template (7) and the intermediate template (2). The injection holes include an injection hole A (71) and an injection hole C (72). The injection hole A (71) is vertically opened from the top of the upper template (1) and communicated with the cavity A (21). The injection hole C (72) is vertically opened from the bottom of the lower template (7) and communicated with the cavity C (23).
8. The injection mold for high-efficiency heating and cooling according to claim 1, characterized in that: Sliding seats (8) are fixedly arranged on the side walls of the upper template (1) and the lower template (7). Slide holes (81) are opened on the sliding seats (8), and limiting columns (82) are slidably arranged in the slide holes (81).