Arched part forming die

Abstract

The arched part forming die comprises a female die assembly, the female die assembly is provided with a cavity, a first water conveying part, a second water conveying part and a third water conveying part, the first water conveying part comprises a first waterway channel suitable for the profile of the cavity, the channel is composed of a straight line section and a curved line section, and the distances from the surface to the inner wall of the cavity are equal; the second conveying water and the third conveying water are located on the two sides of the cavity correspondingly, and the cooling effect is enhanced. The upper die base plate and the upper die forming plate are overlapped to form a waterway channel and are fixedly connected through bolts. The device can achieve the effects of uniform cooling, high forming quality and compact structure, and the production efficiency and quality of the arched parts are remarkably improved.

Description

[0001] This invention relates to the field of injection molds, and more particularly to a molding mold for arched parts. Background Technology

[0002] Injection molds are widely used in the industrial field. Plastic parts, such as arched parts, are generally manufactured using injection molds. An injection mold consists of a cavity mold and a punch mold. The cavity mold and punch mold together form the product cavity. The cavity mold is used to mold the outer surface of the product, and the punch molds the inner surface of the product.

[0003] like Figure 1 The image shows an arched part, which is part of a certain type of structural component. It can be seen that the outer surface 111 of the arched part is curved, while the inner surface 112 is concave. In mold design, the outer surface 111 is formed by a concave die, and the inner surface 112 is formed by a convex die. Furthermore, according to actual production requirements, the outer surface 111 of this arched part needs to have a high degree of surface finish to meet subsequent usage requirements. Therefore, when designing the mold, the cooling effect of the forming area of ​​the outer surface 111 needs to be carefully considered to ensure the surface quality after forming.

[0004] like Figure 2 As shown, the cooling water channels 113 in the existing mold adopt a traditional transverse arrangement. However, due to the arched design of the cavity 2, which is not planar, there is a difference in the vertical distance between the transverse cooling water channels 113 and the cavity 2. This structure causes uneven heating of the outer surface 111 of the arched part during the molding process, thus affecting the smoothness of the outer surface 111 after molding. In addition, although the existing mold can complete the basic molding task, there is still room for improvement in its cooling efficiency and molding quality. Summary of the Invention

[0005] The purpose of this invention is to provide a molding die for arched parts that provides uniform cooling, high molding quality, and a compact structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an arched part forming mold, comprising a concave mold assembly, wherein the concave mold assembly is provided with a cavity for forming the outer surface of the arched part, the concave mold assembly is provided with a first water channel, a second water channel and a third water channel, wherein the first water channel is located above the cavity, and the second water channel and the third water channel are located on both sides of the cavity, the first water channel includes at least one set of first water channel structures, the first water channel structure includes a first water inlet and a first water outlet, the first water channel structure further includes a plurality of first water channel channels adapted to the contour of the cavity, one end of the plurality of first water channel channels is connected to the first water inlet, and the other end of the plurality of first water channel channels is connected to the first water outlet.

[0007] Compared with existing technologies, the advantages of this invention are as follows: This solution solves the problem of uneven cooling caused by cavity arching in traditional transverse water channel structures by optimizing the layout and structure of the cooling water channels. The first water channel in the first water circulation is designed according to the cavity contour, with equal vertical distances from the surface of its straight and curved sections to the inner wall of the cavity, ensuring uniform heat exchange between the cooling medium and the cavity. The second and third water circulation channels are located on both sides of the cavity, further enhancing the cooling effect. In addition, the design of the flow divider cone can uniformly guide the molten plastic into the cavity, avoiding molding defects. The overall structure is compact, with high cooling efficiency, and can significantly improve the molding quality of arched parts.

[0008] As a further improvement of the present invention, the first waterway includes multiple straight sections and multiple arched curved sections, wherein the vertical distance from the surface of the curved section to the inner wall of the cavity is equal to the vertical distance from the surface of the straight section to the inner wall of the cavity.

[0009] As a further improvement of the present invention, the plurality of the first waterway channels are arranged at intervals.

[0010] As a further improvement of the present invention, the first water conveyance includes two sets of first water channel structures, the two sets of first water channel structures are arranged in a front-to-back interval, and a feed channel is provided between the two sets of first water channel intervals, the feed channel being connected to the cavity.

[0011] As a further improvement of the present invention, the concave mold assembly includes an upper mold pad and an upper mold forming plate, wherein the upper mold pad and the upper mold forming plate are stacked vertically; the upper mold pad is provided with the first water inlet hole and the first water outlet hole on both the front and rear sides; and the top of the mold forming plate is provided with an annular groove for installing a sealing ring.

[0012] As a further improvement of the present invention, the second water conveyance includes a second water inlet and a second water outlet. The second water conveyance also includes a plurality of second water channels, which are arranged vertically at intervals. One end of the plurality of second water channels is connected to the second water inlet, and the other end of the plurality of second water channels is connected to the second water outlet.

[0013] As a further improvement of the present invention, the third water transport includes a third water inlet and a third water outlet, and the third water transport also includes a plurality of third water channels, which are arranged vertically at intervals. One end of the plurality of third water channels is connected to the third water inlet, and the other end of the plurality of third water channels is connected to the third water outlet.

[0014] As a further improvement of the present invention, the width of the first waterway is equal to the spacing between two adjacent first waterways.

[0015] As a further improvement of the present invention, the upper mold forming plate is provided with a plurality of slots suitable for the cavity contour, the plurality of slots are arranged at intervals, and the upper mold pad is provided with a plurality of insert plates suitable for the contour of the slots; after the upper mold pad and the upper mold forming plate are stacked on top of each other, the plurality of insert plates are correspondingly inserted into the plurality of slots, and the insert plates and the slots form the first water channel.

[0016] As a further improvement of the present invention, the plurality of second water channels all penetrate to the left side of the upper mold forming plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-section of the arched part; Figure 2 This is a schematic diagram showing the structural relationship between the cooling water channel structure and the cavity in an existing mold. Figure 3 This is a schematic diagram of the die assembly structure; Figure 4 This is a schematic diagram of the first water channel in the die assembly; Figure 5 This is a schematic diagram of the upper mold forming plate structure; Figure 6 This is a schematic diagram of the upper mold base plate structure; Figure 7 Left view of the die assembly; Figure 8 for Figure 7 Schematic diagram of section AA; Figure 9 for Figure 7 Schematic diagram of the BB section.

[0018] In the diagram: 1. Die assembly; 2. Cavity; 3. First water inlet; 4. First water outlet; 5. Second water inlet; 9. Second water outlet; 6. First water channel; 7. Straight section; 8. Curved section; 10. Feed channel; 11. Third water inlet; 19. Third water outlet; 12. Second water channel; 13. Third water channel; 14. Annular groove; 15. Upper mold backing plate; 16. Upper mold forming plate; 17. Slot; 18. Insert plate; 111. Outer surface; 112. Inner surface; 113. Cooling water channel. Detailed Implementation

[0019] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this invention 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. They should not be construed as limiting the specific protection scope of this invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this invention are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device.

[0023] like Figures 3-9 As shown, an arched part forming mold mainly includes a die assembly 1, in which a cavity 2 is provided for forming the outer surface 111 of the arched part. The die assembly 1 is internally designed with a first water channel, a second water channel, and a third water channel to achieve a cooling function. The first water channel is located above the cavity 2, and the second and third water channels are respectively arranged on both sides of the cavity 2.

[0024] The first water circulation system comprises two sets of first water channel structures. Each set consists of a first inlet hole 3, a first outlet hole 4, and multiple first water channel channels 6 adapted to the contour of the cavity 2. One end of each first water channel channel 6 is connected to the first inlet hole 3, and the other end is connected to the first outlet hole 4. The interior of each first water channel channel 6 is divided into a straight section 7 and a curved section 8. The curved section 8 has an arched design, and the vertical distance from its surface to the inner wall of the cavity 2 is equal to the vertical distance from the straight section 7 to the inner wall of the cavity 2. This design ensures that the cooling medium can uniformly adhere to the inner wall of the cavity 2 when flowing through the first water channel channel 6, thereby achieving a uniform cooling effect.

[0025] Multiple first water channels 6 are arranged at intervals, and a feed channel 10 is provided between the two sets of first water channel structures. The feed channel 10 is connected to the cavity 2.

[0026] The die assembly 1 is formed by stacking an upper die pad 15 and an upper die forming plate 16. The upper die pad 15 has first water inlet holes 3 and first water outlet holes 4 on both its front and rear sides. The upper die forming plate 16 also has an annular groove 14 on its top for installing a sealing ring to ensure the sealing of the cooling medium. The upper die forming plate 16 has multiple slots 17 inside, distributed along the contour of the cavity 2 and spaced apart. The upper die pad 15 has multiple insert plates 18 corresponding to it. When the upper die pad 15 and the upper die forming plate 16 are stacked, the insert plates 18 are inserted into the slots 17, forming a first water channel 6. The fit between the insert plates 18 and the slots 17 is precision machined to ensure a tight fit and prevent cooling medium leakage. Furthermore, the upper die pad 15 and the upper die forming plate 16 are fixedly connected by bolts, with the bolts staggered from the distribution of the first water channel 6 to avoid interference with its structure.

[0027] The second water circulation system includes a second inlet hole 5, a second outlet hole 9, and multiple second water channels 12. These second water channels 12 are arranged vertically at intervals and extend to the left side of the upper mold forming plate 16. One end of each of the multiple second water channels 12 is connected to the second inlet hole 5, and the other end is connected to the second outlet hole 9. The third water circulation system has a similar structure to the second water circulation system, including a third inlet hole 11, a third outlet hole 19, and multiple third water channels 13. These third water channels 13 are also arranged vertically at intervals and extend to the right side of the upper mold forming plate 16. The cross-sectional shape of the second water channels 12 and the third water channels 13 is rectangular, with the long side of the rectangular cross-section aligned with the water flow direction. This design increases the flow area of ​​the water channels and reduces water flow resistance. At the same time, the short side of the rectangular cross-section maintains a constant distance from the inner wall of the cavity 2, ensuring uniform heat exchange between the cooling medium and the cavity 2.

[0028] The width of the first water channel 6 is equal to the distance between two adjacent first water channels 6. This design makes the cooling medium more evenly distributed when flowing through the first water channel 6, avoiding the phenomenon of local cooling being too fast or too slow due to uneven channel spacing.

[0029] The inner walls of the first water inlet 3 and the first water outlet 4 are provided with threaded structures for connection with external water pipe fittings. The pitch and depth of the threaded structures are optimized to ensure connection strength while facilitating quick disassembly and replacement of water pipe fittings.

[0030] In practical applications, molten plastic enters the cavity 2 through the feed channel 10, completing the forming process of the arched part. Simultaneously, the cooling medium enters the first water channel 6 through the first water inlet 3, flows along the first water channel 6, and finally exits from the first water outlet 4. As the cooling medium flows through the first water channel 6, uniform cooling is achieved because the vertical distance from its surface to the inner wall of the cavity 2 remains consistent. The second and third water channels introduce the cooling medium through the second water inlet 5 and the third water inlet 11, respectively. The cooling medium flows along the second water channel 12 and the third water channel 13, and finally exits from the second water outlet 9 and the third water outlet 19. The rectangular cross-section design of the second water channel 12 and the third water channel 13 increases the flow area of ​​the cooling medium, reduces water flow resistance, and further improves cooling efficiency. The heat sink at the bottom of the upper mold forming plate 16 further enhances the cooling effect by increasing the heat dissipation area. The design of the entire cooling system enables uniform cooling of the arched part during the forming process, thereby significantly improving the forming quality.

[0031] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each component are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are prior art and are therefore not shown in the figures, nor will they be described further here.

[0032] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A molding die for forming an arched part, comprising a die assembly (1), the die assembly (1) having a cavity (2) for forming the outer surface (111) of the arched part, the die assembly (1) having a first water channel, a second water channel and a third water channel, the first water channel being located above the cavity (2), the second water channel and the third water channel being located on both sides of the cavity (2), characterized in that: The first water transport includes at least one set of first water passage structures, the first water passage structure includes a first water inlet (3) and a first water outlet (4), the first water passage structure also includes a plurality of first water passage channels (6) adapted to the contour of the cavity (2), one end of the plurality of first water passage channels (6) is connected to the first water inlet (3), and the other end of the plurality of first water passage channels (6) is connected to the first water outlet (4).

2. The arch-shaped part forming mold according to claim 1, characterized in that: The first waterway channel (6) includes multiple straight sections (7) and multiple arched curved sections (8). The vertical distance from the surface of the curved section (8) to the inner wall of the cavity (2) is equal to the vertical distance from the surface of the straight section (7) to the inner wall of the cavity (2).

3. The arched part forming mold according to claim 2, characterized in that: Multiple first waterway channels (6) are arranged at intervals.

4. The arched part forming mold according to claim 3, characterized in that: The first water conveyance includes two sets of first water channel structures, which are arranged in a front-to-back interval, and a feed channel (10) is provided between the two sets of first water channels. The feed channel (10) is connected to the cavity (2).

5. The arched part forming mold according to claim 4, characterized in that: The concave mold assembly (1) includes an upper mold pad (15) and an upper mold forming plate (16), the upper mold pad (15) and the upper mold forming plate (16) are stacked on top of each other; the upper mold pad (15) is provided with the first water inlet hole (3) and the first water outlet hole (4) on both the front and rear sides; the upper mold forming plate (16) is provided with an annular groove (14) for installing a sealing ring on the top.

6. The arched part forming mold according to claim 5, characterized in that: The second water transport includes a second water inlet (5) and a second water outlet (9). The second water transport also includes a plurality of second water channels (12). The plurality of second water channels (12) are arranged at intervals between the upper and lower parts. One end of the plurality of second water channels (12) is connected to the second water inlet (5), and the other end of the plurality of second water channels (12) is connected to the second water outlet (9).

7. The arched part forming mold according to claim 6, characterized in that: The third water transport includes a third water inlet (11) and a third water outlet (19). The third water transport also includes a plurality of third water channels (13). The plurality of third water channels (13) are arranged vertically at intervals. One end of the plurality of third water channels (13) is connected to the third water inlet (11), and the other end of the plurality of third water channels (13) is connected to the third water outlet (19).

8. The arched part forming mold according to claim 3, characterized in that: The width of the first waterway channel (6) is equal to the spacing between two adjacent first waterway channels (6).

9. The arched part forming mold according to claim 5, characterized in that: The upper mold forming plate (16) is provided with a plurality of slots (17) adapted to the contour of the cavity (2), and the plurality of slots (17) are arranged at intervals. The upper mold pad plate (15) is provided with a plurality of insert plates (18) adapted to the contour of the slots (17). After the upper mold pad plate (15) and the upper mold forming plate (16) are stacked on top of each other, the plurality of insert plates (18) are inserted into the plurality of slots (17) respectively, and the first water channel (6) is formed between the insert plates (18) and the slots (17).

10. The arched part forming mold according to claim 7, characterized in that: Multiple second water channels (12) extend to the left side of the upper mold forming plate (16).

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