Injection mold with integrated cooling structure

Abstract

This invention discloses an injection mold with a conformal cooling structure, including a base plate. Support plates are fixedly installed on both sides of the top of the base plate. A lower mold plate is fixedly installed on the top of the support plates. An upper mold plate is movably installed on the top of the lower mold plate. A water inlet and a water outlet are provided at one end of both the lower and upper mold plates. Cooling water channels are provided inside both the lower and upper mold plates. A lower mold groove is provided on the top of the lower mold plate, and a release mold plate is movably installed inside the lower mold groove. An upper mold groove is provided at the bottom of the upper mold plate. This invention enables conformal cooling of the mold through the lower and upper mold plates and the cooling water channels. It can conform to the product contour, provides uniform cooling distance with no heat dissipation blind spots, and maintains a stable and consistent mold temperature. Automatic demolding is achieved through the release mold plate, ejector pins, and a rotary motor, thereby reducing the labor intensity of operators and improving demolding efficiency.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to an injection mold with a conformal cooling structure. Background Technology

[0002] Injection molds are specialized precision tooling for plastic injection molding. They are installed on injection molding machines and inject molten plastic into the cavity under high temperature and pressure. After the material cools and solidifies, it is molded into a plastic product of a specified shape. This mold mainly consists of a mold base, fixed mold, moving mold, gating system, cooling system, ejection system, and guiding and positioning components. It is a core piece of equipment for mass production of plastic parts and is widely used in industries such as home appliances, 3C products, automobiles, and daily necessities. Compared with traditional straight water channels, the conformal cooling water channel is arranged to fit the shape of the product and maintains an equidistant distance from the cavity. It can eliminate cooling blind spots in curved surfaces, deep ribs, corners, and thin-walled areas, achieving synchronous cooling of the entire plastic part. It can reduce defects such as shrinkage marks, bubbles, and warpage, reduce internal stress in the product, improve dimensional accuracy and appearance quality, and shorten cooling time by 30% to 50%, significantly compressing the molding cycle and increasing production capacity. At the same time, it can be arranged along any curve to meet the cooling needs of complex plastic parts such as deep cavities, multi-ribbed parts, and irregular curved surfaces. It can also reduce equipment energy consumption and material loss, and lower overall production costs. The uniform and stable cavity temperature can also reduce thermal shock to the mold, delay fatigue deformation, and effectively extend the service life of the mold. Therefore, an injection mold with a conformal cooling structure is needed.

[0003] Existing injection molds are mostly straight water channels, which cannot conform to the product contour, have uneven cooling distances, and have a large number of heat dissipation blind spots, resulting in large differences in mold temperature, easy deformation of plastic parts, and long molding cycles. Manual demolding is also used during demolding, which may reduce demolding efficiency. Furthermore, manual mold closing is often used during mold closing, which may cause deviations and thus affect the quality of mold forming. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold with a conformal cooling structure to solve the problems mentioned in the background art. Existing injection molds are mostly straight water channels, which cannot conform to the product contour, have uneven cooling distance, and have a large number of heat dissipation blind spots, resulting in large mold temperature differences, easy deformation of plastic parts, and long molding cycles. Manual demolding is also used during demolding, which may reduce demolding efficiency. Furthermore, manual mold closing is often used during mold closing, which may cause deviations and thus affect the quality of mold forming.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an injection mold with a conformal cooling structure, comprising a base plate, support plates fixedly installed on both sides of the top of the base plate, a lower mold plate fixedly installed on the top of the support plates, an upper mold plate movably installed on the top of the lower mold plate, a water inlet and a water outlet opened at one end of both the lower and upper mold plates, cooling water channels opened inside both the lower and upper mold plates, a lower mold groove opened on the top of the lower mold plate, a release mold plate movably installed inside the lower mold groove, an upper mold groove opened at the bottom of the upper mold plate, a feed pipe fixedly installed on the top of the upper mold plate, and the bottom of the feed pipe penetrating the upper mold plate and extending to the inner surface of the upper mold groove; Vertical tubes are fixedly installed on both sides of the top of the base plate. Vertical rods are movably installed inside each vertical tube. A sliding groove is opened at one end of each vertical tube. A slider is movably installed inside each sliding groove. One end of the slider is fixedly connected to one end of the vertical rod. A top plate is fixedly installed at the top of the vertical rod. A top rod is fixedly installed at the top of the top plate. The top of the top rod passes through the lower template and is fixedly connected to the bottom of the template.

[0006] Preferably, clamping plates are fixedly installed at both ends of the top of the base plate, and a round shaft is rotatably installed between the clamping plates. Rotating rods are fixedly sleeved at both ends of the surface of the round shaft, and connecting rods are hinged between the rotating rods and the top plate. A rotary motor is fixedly installed at one end of the clamping plate, and the output end of the rotary motor passes through the clamping plate and is fixedly connected to one end of the round shaft.

[0007] Preferably, a vertical plate is fixedly installed on the top of the base plate, a vertical groove is opened inside the vertical plate, a lead screw is rotatably installed inside the vertical groove, a threaded sleeve is threaded onto the surface of the lead screw, a connecting plate is fixedly installed at one end of the threaded sleeve, and one end of the connecting plate is fixedly connected to one end of the upper template.

[0008] Preferably, a lifting motor is fixedly installed on the top of the upright plate, and the output end of the lifting motor passes through the upright plate and is fixedly connected to the top of the lead screw.

[0009] Preferably, a vertical plate is fixedly installed at one end of each of the upright plates, and a limiting groove is formed inside each of the vertical plates. A limiting rod is movably installed inside each of the limiting grooves, and one side of the limiting rod is fixedly connected to one side of the connecting plate.

[0010] Preferably, anti-slip pads are fixedly installed at all four corners of the bottom of the base plate, and the number of anti-slip pads is four, and the four anti-slip pads are the same size.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This type of injection mold with a conformal cooling structure allows the operator to inject molding material into the lower and upper mold slots through the feed pipe during daily use. Cooling liquid then enters the cooling water channel through the water inlet and exits through the water outlet. The cooling water channel is shaped like the injection mold. After injection is complete, a rotary motor is started, causing a rotating shaft to rotate. This shaft, in turn, rotates a rotating rod, which in turn rotates a connecting rod. The connecting rod then causes the top plate to slide, which in turn causes the vertical rod to slide inside the vertical tube. The vertical rod then drives the slider to slide inside the groove, while the top plate drives the ejector rod to slide. The ejector rod then drives the ejector plate to slide, and the ejector plate can then eject the molded part from the lower mold groove. This invention can cool the mold according to its shape through the lower mold plate, upper mold plate, and cooling water channels. It can conform to the product contour, with uniform cooling distance, no heat dissipation blind spots, and stable and consistent mold temperature. It can effectively avoid plastic part deformation and significantly shorten the injection molding cycle. Then, the mold is automatically demolded through the ejector plate, ejector rod, and rotary motor, thereby reducing the labor intensity of operators and improving demolding efficiency.

[0012] This injection mold with a conformal cooling structure allows for automatic mold closing during daily use. The operator activates the lifting motor, which rotates the lead screw. The lead screw then drives the lead sleeve to slide within the vertical groove. The lead sleeve then drives the connecting plate to slide, which in turn drives the limiting rod to slide within the limiting groove. Simultaneously, the connecting plate drives the upper mold plate to slide until the bottom of the upper mold plate reaches the top of the lower mold plate. This operation method, using the lead screw, connecting plate, and lifting motor, enables automatic mold closing, improving mold closing accuracy and thus enhancing mold processing quality. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention; Figure 2 This is a side sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of a section at point A in the middle; Figure 4 This is a schematic diagram of the top structure of the base plate of the present invention; Figure 5 This is a front sectional view of the present invention.

[0014] In the diagram: 1. Base plate; 2. Support plate; 3. Lower template; 4. Upper template; 5. Water inlet; 6. Water outlet; 7. Cooling water channel; 8. Lower mold groove; 9. Demolding template; 10. Upper mold groove; 11. Feed pipe; 12. Vertical pipe; 13. Vertical rod; 14. Slide groove; 15. Slider; 16. Top plate; 17. Push rod; 18. Clamping plate; 19. Round shaft; 20. Rotating rod; 21. Connecting rod; 22. Rotary motor; 23. Vertical groove; 24. Lead screw; 25. Lead sleeve; 26. Connecting plate; 27. Lifting motor; 28. Vertical plate; 29. ​​Limiting groove; 30. Limiting rod; 31. Anti-slip pad; 32. Vertical plate. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1:

[0017] Please see Figures 1-5 An injection mold with a conformal cooling structure includes a base plate 1, support plates 2 fixedly installed on both sides of the top of the base plate 1, a lower mold plate 3 fixedly installed on the top of the support plate 2, an upper mold plate 4 movably installed on the top of the lower mold plate 3, a water inlet 5 and a water outlet 6 opened at one end of both the lower mold plate 3 and the upper mold plate 4, cooling water channels 7 opened inside both the lower mold plate 3 and the upper mold plate 4, a lower mold groove 8 opened on the top of the lower mold plate 3, a release mold plate 9 movably installed inside the lower mold groove 8, an upper mold groove 10 opened at the bottom of the upper mold plate 4, and a feed pipe 11 fixedly installed on the top of the upper mold plate 4, the bottom of the feed pipe 11 penetrating the upper mold plate 4 and extending to the inner surface of the upper mold groove 10; Vertical tubes 12 are fixedly installed on both sides of the top of the base plate 1. Vertical rods 13 are movably installed inside the vertical tubes 12. A sliding groove 14 is opened at one end of each vertical tube 12. A slider 15 is movably installed inside the sliding groove 14. One end of the slider 15 is fixedly connected to one end of the vertical rod 13. A top plate 16 is fixedly installed on the top of the vertical rod 13. A top rod 17 is fixedly installed on the top of the top plate 16. The top of the top rod 17 passes through the lower template 3 and is fixedly connected to the bottom of the demolding template 9. Clamping plates 18 are fixedly installed at both ends of the top of the base plate 1. A round shaft 19 is rotatably installed between the clamping plates 18. A rotating rod 20 is fixedly sleeved at both ends of the surface of the round shaft 19. A connecting rod 21 is hinged between the rotating rod 20 and the top plate 16. A rotary motor 22 is fixedly installed at one end of the clamping plate 18. The output end of the rotary motor 22 passes through the clamping plate 18 and is fixedly connected to one end of the round shaft 19.

[0018] In this invention, the operator can inject the injection molding material into the lower mold groove 8 and the upper mold groove 10 through the feed pipe 11. Cooling liquid then enters the cooling water channel 7 through the water inlet 5 and is discharged through the water outlet 6. The cooling water channel 7 is shaped like the injection mold. The water inlet 5, water outlet 6, and cooling water channel 7 are connected to each other, establishing a circulation system to circulate the cooling liquid. After injection molding is completed, the rotary motor 22 is started. The operation of the rotary motor 22 causes the circular shaft 19 to rotate. Rotation causes the cylindrical shaft 19 to rotate, which in turn causes the rotating rod 20 to rotate. The rotating rod 20 then causes the connecting rod 21 to rotate, which in turn causes the top plate 16 to slide. The top plate 16 then causes the vertical rod 13 to slide inside the vertical tube 12. The vertical rod 13 then causes the slider 15 to slide inside the slide groove 14. At the same time, the top plate 16 causes the ejector rod 17 to slide, which in turn causes the ejector plate 9 to slide. The molded part can then be ejected from the lower mold groove 8 through the ejector plate 9.

[0019] Example 2:

[0020] Please see Figures 1-5 An injection mold with a conformal cooling structure is provided. A vertical plate 32 is fixedly installed on the top of the base plate 1. A vertical groove 23 is opened inside the vertical plate 32. A lead screw 24 is rotatably installed inside the vertical groove 23. A threaded sleeve 25 is threaded onto the surface of the lead screw 24. A connecting plate 26 is fixedly installed at one end of the threaded sleeve 25, and one end of the connecting plate 26 is fixedly connected to one end of the upper template 4. A lifting motor 27 is fixedly installed on the top of the vertical plate 32, and the output end of the lifting motor 27 passes through the vertical plate 32 and is fixedly connected to the top of the lead screw 24.

[0021] In this invention, the operator starts the lifting motor 27. The operation of the lifting motor 27 causes the lead screw 24 to rotate. Subsequently, the lead screw 24 drives the threaded sleeve 25 to slide inside the vertical groove 23. Then, the threaded sleeve 25 drives the connecting plate 26 to slide. At the same time, the connecting plate 26 drives the upper template 4 to slide until the bottom of the upper template 4 reaches the top of the lower template 3. This operation method can automatically close the mold through the lead screw 24, the connecting plate 26, and the lifting motor 27, which can improve the accuracy of mold closing and thus improve the quality of mold processing.

[0022] Example 3:

[0023] Please see Figures 1-5An injection mold with a conformal cooling structure is provided. A vertical plate 28 is fixedly installed on one end of the vertical plate 32. A limit groove 29 is opened inside the vertical plate 28. A limit rod 30 is movably installed inside the limit groove 29. One side of the limit rod 30 is fixedly connected to one side of the connecting plate 26. Anti-slip pads 31 are fixedly installed at the four corners of the bottom of the base plate 1. There are four anti-slip pads 31, and the four anti-slip pads 31 are the same size.

[0024] In this invention, when the connecting plate 26 slides, it will cause the limiting rod 30 to slide as well. Subsequently, the limiting rod 30 will slide inside the limiting groove 29. The inner surface of the limiting groove 29 and the outer surface of the limiting rod 30 are both smooth, which allows the limiting rod 30 to slide more smoothly inside the limiting groove 29 and reduces the occurrence of jamming. Due to the design of the limiting groove 29 and the limiting rod 30, the sliding of the connecting plate 26 is more stable. The bottom of the anti-slip pad 31 adopts an anti-slip design, which can increase the friction with the ground and thus increase the stability of the base plate 1.

[0025] Working principle: First, the operator starts the lifting motor 27. The operation of the lifting motor 27 causes the lead screw 24 to rotate. Subsequently, the lead screw 24 drives the lead sleeve 25 to slide inside the vertical groove 23. Then, the lead sleeve 25 drives the connecting plate 26 to slide. At this time, the connecting plate 26 drives the limiting rod 30 to slide. Subsequently, the limiting rod 30 slides inside the limiting groove 29. At the same time, the connecting plate 26 drives the upper mold plate 4 to slide until the bottom of the upper mold plate 4 reaches the top of the lower mold plate 3, at which point the mold can be closed. Next, the injection molding material can be injected into the lower mold groove 8 and the upper mold groove 10 through the feed pipe 11. Then, the cooling liquid can enter the cooling water channel 7 through the water inlet 5. Subsequently, the cooling liquid will be discharged through the water outlet 6. The cooling water channel 7 is shaped as follows: The shape is that of the injection mold. After injection molding is completed, the lifting motor 27 is restarted and the upper mold plate 4 is moved to the top of the lower mold plate 3. Then the rotary motor 22 is started. The operation of the rotary motor 22 will cause the round shaft 19 to rotate. The round shaft 19 will then drive the rotating rod 20 to rotate. Subsequently, the rotating rod 20 will drive the connecting rod 21 to rotate. At this time, the connecting rod 21 will drive the top plate 16 to slide. Subsequently, the top plate 16 will drive the vertical rod 13 to slide inside the vertical tube 12. Subsequently, the vertical rod 13 will drive the slider 15 to slide inside the slide groove 14. At the same time, the top plate 16 will drive the ejector rod 17 to slide. Subsequently, the ejector rod 17 will drive the demolding plate 9 to slide. Then, the molded mold can be ejected from the lower mold groove 8 through the demolding plate 9, thus completing the demolding.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection mold with a conformal cooling structure, comprising a base plate (1), characterized in that: Support plates (2) are fixedly installed on both sides of the top of the base plate (1). A lower template (3) is fixedly installed on the top of the support plate (2). An upper template (4) is movably installed on the top of the lower template (3). A water inlet (5) and a water outlet (6) are opened at one end of the lower template (3) and the upper template (4). Cooling water channels (7) are opened inside the lower template (3) and the upper template (4). A lower mold groove (8) is opened on the top of the lower template (3). A stripping template (9) is movably installed inside the lower mold groove (8). An upper mold groove (10) is opened at the bottom of the upper template (4). A feed pipe (11) is fixedly installed on the top of the upper template (4). The bottom of the feed pipe (11) penetrates the upper template (4) and extends to the inner surface of the upper mold groove (10). Vertical tubes (12) are fixedly installed on both sides of the top of the base plate (1). Vertical rods (13) are movably installed inside the vertical tubes (12). A sliding groove (14) is opened at one end of each vertical tube (12). A slider (15) is movably installed inside the sliding groove (14). One end of the slider (15) is fixedly connected to one end of the vertical rod (13). A top plate (16) is fixedly installed on the top of the vertical rod (13). A top rod (17) is fixedly installed on the top of the top plate (16). The top of the top rod (17) passes through the lower template (3) and is fixedly connected to the bottom of the demolding template (9).

2. The injection mold with a conformal cooling structure according to claim 1, characterized in that: The top two ends of the base plate (1) are fixedly installed with clamping plates (18), and a round shaft (19) is rotatably installed between the clamping plates (18). A rotating rod (20) is fixedly sleeved on both ends of the surface of the round shaft (19). A connecting rod (21) is hinged between the rotating rod (20) and the top plate (16). A rotary motor (22) is fixedly installed on one end of the clamping plate (18), and the output end of the rotary motor (22) passes through the clamping plate (18) and is fixedly connected to one end of the round shaft (19).

3. The injection mold with a conformal cooling structure according to claim 1, characterized in that: A vertical plate (32) is fixedly installed on the top of the base plate (1). A vertical groove (23) is provided inside the vertical plate (32). A lead screw (24) is rotatably installed inside the vertical groove (23). A threaded sleeve (25) is threaded onto the surface of the lead screw (24). A connecting plate (26) is fixedly installed at one end of the threaded sleeve (25), and one end of the connecting plate (26) is fixedly connected to one end of the upper template (4).

4. The injection mold with a conformal cooling structure according to claim 3, characterized in that: A lifting motor (27) is fixedly installed on the top of the upright plate (32), and the output end of the lifting motor (27) passes through the upright plate (32) and is fixedly connected to the top of the lead screw (24).

5. An injection mold with a conformal cooling structure according to claim 3, characterized in that: One end of each of the upright plates (32) is fixedly installed with a vertical plate (28). Each vertical plate (28) has a limiting groove (29) inside. Each limiting groove (29) has a limiting rod (30) movably installed inside. One side of the limiting rod (30) is fixedly connected to one side of the connecting plate (26).

6. The injection mold with a conformal cooling structure according to claim 1, characterized in that: Anti-slip pads (31) are fixedly installed at the four corners of the bottom of the base plate (1). There are four anti-slip pads (31), and the four anti-slip pads (31) are the same size.

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