An injection mold that is easy to dissipate heat

Abstract

The present application relates to the technical field of injection molds, and in particular to an injection mold that is easy to dissipate heat, which includes two mutually cooperating mold bodies, wherein the interior of the mold bodies is provided with a liquid inlet channel, a cooling channel and a liquid outlet channel that are connected in sequence, wherein fluid ice flows in the liquid inlet channel, the cooling channel and the liquid outlet channel, and the ends of the liquid inlet channel and the liquid outlet channel that are away from the cooling channel both penetrate the corresponding mold body side; the cooling channel is connected to the liquid inlet channel through an ice-blocking assembly, wherein the ice-blocking assembly is provided with several groups, wherein the interior of the ice-blocking assembly is hollow and connected to the liquid inlet channel, wherein the ice-blocking assembly is provided with several ice-blocking nozzles, wherein the cooling channel is connected to the interior of the ice-blocking assembly through the ice-blocking nozzles, and the opening area of ​​the ice-blocking nozzles gradually decreases from the interior of the ice-blocking assembly to the exterior of the ice-blocking assembly. The present application can accelerate the cooling of the injection mold, thereby improving the injection efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and in particular to an injection mold that is easy to dissipate heat. Background Art

[0002] Injection molds are tools that produce complete structures and precise dimensions of plastic products. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and obtaining a molded product after cooling and solidification.

[0003] However, the current injection molds cannot achieve the ideal rapid production effect due to the slow cooling after injection molding. After the injection molding is completed, it is necessary to wait for natural cooling to complete normal demoulding, resulting in a waiting period in the injection molding process, which affects the injection molding efficiency. Therefore, improvement is needed. Summary of the invention

[0004] In order to accelerate the cooling of the injection mold and thus improve the injection efficiency, the present application provides an injection mold that is easy to dissipate heat.

[0005] An injection mold that is easy to dissipate heat provided in the present application adopts the following technical scheme: an injection mold that is easy to dissipate heat, comprising two mold bodies that cooperate with each other, wherein the interior of the mold bodies is provided with a liquid inlet channel, a cooling channel and a liquid outlet channel that are connected in sequence, wherein fluid ice flows in the liquid inlet channel, the cooling channel and the liquid outlet channel, and the ends of the liquid inlet channel and the liquid outlet channel that are away from the cooling channel both penetrate the corresponding side of the mold body; the cooling channel is connected to the liquid inlet channel through an ice-blocking assembly, the ice-blocking assembly is provided with several groups, the interior of the ice-blocking assembly is hollow and connected to the liquid inlet channel, the ice-blocking assembly is provided with several ice-blocking nozzles, the cooling channel is connected to the interior of the ice-blocking assembly through the ice-blocking nozzles, and the opening area of ​​the ice-blocking nozzles gradually decreases from the interior of the ice-blocking assembly to the exterior of the ice-blocking assembly.

[0006] Optionally, the interior of the mold body is provided with an installation cavity connected to the liquid outlet channel, and an ice-breaking assembly is provided in the installation cavity. The ice-breaking assembly includes an impeller rotatably connected to the wall of the installation cavity, and the impeller portion extends into the liquid outlet channel. When the fluid ice flows in the liquid outlet channel, it will push the impeller to rotate.

[0007] Optionally, the impeller is provided with a plurality of spikes for ice particles to collide with.

[0008] Optionally, an ice guide assembly is provided in the liquid outlet channel, and the ice guide assembly includes an ice filter plate embedded in the liquid outlet channel, and the ice filter plate is located at one end of the liquid outlet channel away from the cooling channel.

[0009] Optionally, the ice guide assembly also includes a connecting channel connected to both ends of the liquid outlet channel, and the ice filter plate is arranged at an angle and is used to guide ice particles in the fluid ice into the connecting channel. The ice particles will flow through the connecting channel to one end of the liquid outlet channel close to the cooling channel.

[0010] Optionally, a check valve is provided in the connecting channel, and the check valve is used to block the fluid ice at one end of the liquid outlet channel close to the cooling channel from flowing through the connecting channel to the end of the liquid outlet channel away from the cooling channel.

[0011] Optionally, the mold body includes a cooling seat and an injection mold plate which are detachably connected to each other, the two injection mold plates are located between the two cooling seats, a plurality of corresponding injection cavities are provided on opposite sides of the two injection mold plates, an injection channel connected to all the injection cavities is provided on the injection mold plate, the liquid inlet channel and the liquid outlet channel are arranged inside the cooling seat, and the cooling seat and the injection mold plate together form a cooling channel.

[0012] Optionally, a plurality of threaded grooves corresponding to the ice-blocking assembly are provided on opposite sides of the two injection molding plates, and a through groove connected to the cooling channel is provided on the bottom groove wall of the threaded groove; the ice-blocking assembly includes a heat conducting plate and a heat conducting pipe connected to each other, the heat conducting plate is threadedly fitted in the threaded groove, and the diameter of the heat conducting plate is larger than the outer diameter of the heat conducting pipe, the heat conducting pipe is passed through the through groove and connected to the liquid inlet channel, and the ice-blocking nozzle is provided on the side of the heat conducting pipe and connected to the interior of the heat conducting pipe.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. The fluid ice in the liquid inlet channel, cooling channel and liquid outlet channel can directly exchange heat with the mold body, so that the plastic in the injection cavity can be cooled quickly, reducing the waiting time during the injection molding process, thereby improving the injection molding efficiency;

[0015] 2. The large ice particles that enter the ice blocking nozzle cannot pass through the ice blocking nozzle smoothly. The large ice particles will exchange heat with the mold body through the ice blocking nozzle and the fluid ice. The ice water in the fluid ice will accelerate through the gap between the large ice particles and the inner wall of the ice blocking nozzle and flow into the cooling channel, so that the large ice particles can melt more quickly. The fluid ice will always be able to maintain a lower temperature, thereby improving the cooling effect on the mold body;

[0016] 3. When the large ice particles gradually melt into small ice particles, the ice water will drive the small ice particles to spray out of the ice blocking nozzle and enter the cooling channel. Some small ice particles will collide with the cooling channel and be broken, increasing the contact area between the ice particles and the ice water, so that the ice water with increased temperature can quickly exchange heat with the ice particles;

[0017] 4. When the fluid ice flows in the liquid outlet channel, it will push the impeller to rotate. The impeller can block the fluid ice. When the small ice particles hit the impeller and the spikes, they will break, so that the small ice particles can quickly exchange heat with the ice water.

[0018] 5. The ice filter plate can block the small ice particles in the fluid ice and guide the small ice particles in the fluid ice to the connecting channel. The small ice particles will flow through the connecting channel to the end of the liquid outlet channel close to the cooling channel. The small ice particles will continue to flow and be broken again by the ice breaking assembly, thereby improving the utilization effect of the ice particles in the fluid ice;

[0019] 6. The check valve is used to block the fluid ice at one end of the liquid outlet channel close to the cooling channel from flowing through the connecting channel to the end of the liquid outlet channel away from the cooling channel. Therefore, only the small ice particles blocked by the ice filter plate can pass through the connecting channel with the ice water and flow to the end of the liquid outlet channel close to the cooling channel, thereby ensuring the flow time of the fluid ice in the liquid outlet channel and accelerating the flow of the fluid ice at one end of the liquid outlet channel close to the cooling channel, thereby improving the heat exchange effect between the fluid ice and the mold body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the embodiment of the present application;

[0021] Figure 2 is a schematic diagram of the cross-sectional structure of the phantom in an embodiment of the present application;

[0022] Figure 3 It is a schematic cross-sectional structural diagram of the ice blocking assembly and the ice guiding assembly in the embodiment of the present application.

[0023] Figure numerals: 1. mold body; 11. cooling seat; 12. injection mold plate; 13. bolt connection pair; 14. injection molding cavity; 15. threaded groove; 16. penetration groove; 2. liquid inlet channel; 3. cooling channel; 4. liquid outlet channel; 5. ice-blocking assembly; 51. heat transfer plate; 52. heat transfer pipe; 53. ice-blocking nozzle; 6. installation cavity; 7. ice-breaking assembly; 71. impeller; 72. spikes; 8. ice-guiding assembly; 81. ice filter plate; 82. connecting channel; 83. check valve. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application discloses an injection mold that is easy to dissipate heat. Figure 1 As shown, an injection mold that is easy to dissipate heat includes two mold bodies 1 that cooperate with each other. The mold body 1 includes a cooling seat 11 and an injection mold plate 12 that are detachably connected to each other. Preferably, the cooling seat 11 and the injection mold plate 12 are connected by a plurality of bolt connection pairs 13.

[0026] The two injection mold plates 12 are located between the two cooling seats 11. A plurality of corresponding injection cavities 14 are provided on opposite sides of the two injection mold plates 12. The injection mold plates 12 are provided with injection channels connected to all the injection cavities 14. The heated and melted plastic can be injected into the corresponding injection cavities 14 through the injection channels.

[0027] A liquid inlet channel 2 and a liquid outlet channel 4 are provided inside the cooling seat 11. The cooling seat 11 and the side opposite to the injection mold plate 12 together form a cooling channel 3. The cooling channel 3 is connected to the liquid inlet channel 2 and the liquid outlet channel 4. The ends of the liquid inlet channel 2 and the liquid outlet channel 4 away from the cooling channel 3 both penetrate the corresponding side of the cooling seat 11. Fluid ice flows in the liquid inlet channel 2, the cooling channel 3 and the liquid outlet channel 4. The fluid ice is flowable ice. The fluid ice is composed of ice water and ice particles. During the flow process, the fluid ice will take away the heat inside the cooling seat 11 and the column mold plate, so that the plastic in the injection cavity 14 can be cooled quickly, thereby improving the injection molding efficiency.

[0028] like Figure 1 and Figure 2 As shown, a plurality of thread grooves 15 are provided on opposite sides of the two injection mold plates 12, and a through groove 16 connected to the cooling channel 3 is provided on the bottom groove wall of the thread groove 15; a plurality of ice-blocking assemblies 5 corresponding to the through grooves 16 are provided in the cooling channel 3, and the ice-blocking assemblies 5 include a heat-conducting plate 51 and a heat-conducting pipe 52 connected to each other, and the heat-conducting plate 51 is threadedly matched with the thread groove 15, so as to facilitate the disassembly and assembly of the ice-blocking assembly 5 on the column mold plate; the side of the heat-conducting plate 51 away from the cooling seat 11 is flush with the side of the injection mold plate 12 away from the cooling seat 11, so that the heat-conducting plate 51 is not easy to affect the mold closing of the two mold bodies 1.

[0029] The heat conducting pipe 52 is passed through the passing groove 16 and connected to the liquid inlet channel 2. The diameter of the heat conducting plate 51 is larger than the outer diameter of the heat conducting pipe 52, thereby increasing the contact area between the ice blocking assembly 5 and the injection mold plate 12 so that the injection mold plate 12 and the fluid ice can quickly exchange heat through the ice blocking assembly 5.

[0030] like Figure 2 and Figure 3 As shown, a plurality of ice-blocking nozzles 53 are provided on the side of the heat-conducting tube 52, and the ice-blocking nozzles 53 are connected to the cooling channel 3 and the interior of the heat-conducting tube 52, and the fluid ice in the liquid inlet channel 2 can enter the ice-blocking nozzles 53 through the heat-conducting tube 52; the opening area of ​​the ice-blocking nozzles 53 gradually decreases from the interior of the heat-conducting tube 52 to the exterior of the heat-conducting tube 52, so that large ice particles entering the ice-blocking nozzles 53 cannot pass through the ice-blocking nozzles 53 smoothly, so the large ice particles will be embedded in the ice-blocking nozzles 53 and exchange heat with the mold body 1 through the ice-blocking nozzles 53 and the fluid ice, thereby realizing rapid cooling of the mold body 1.

[0031] When the large ice particles are embedded in the ice-blocking nozzle 53, the opening area of ​​the ice-blocking nozzle 53 will become smaller, so the ice water in the fluid ice will accelerate through the gap between the large ice particles and the inner wall of the ice-blocking nozzle 53 and flow into the cooling channel 3. The accelerated flow of the ice water will increase the friction with the large ice particles, allowing the large ice particles to melt more quickly, so that the ice water with increased temperature can quickly exchange heat with the large ice particles, so that the fluid ice can always be maintained at a lower temperature, thereby improving the cooling effect on the mold body 1.

[0032] When the large ice particles gradually melt into small ice particles, the ice water will drive the small ice particles to spray out of the ice blocking nozzle 53 and enter the cooling channel 3. Some of the small ice particles will collide with the cooling channel 3 and be broken, thereby increasing the contact area between the ice particles and the ice water, so that the ice water with increased temperature can quickly exchange heat with the ice particles.

[0033] It is worth mentioning that the ice-blocking nozzle 53 can be configured to bend toward the bottom of the cooling channel 3 so that the small ice particles sprayed from the ice-blocking nozzle 53 collide with the cooling channel 3, and then the ice water and small ice particles in the cooling channel 3 will enter the liquid outlet channel 4. The liquid outlet channel 4 is configured to be serpentine, which prolongs the contact time and contact area between the fluid ice and the mold body 1, thereby improving the cooling effect on the mold body 1.

[0034] The interior of the cooling seat 11 is provided with a mounting cavity 6 connected to the middle of the liquid outlet channel 4, and the fluid ice can flow into the mounting cavity 6, thereby further increasing the contact area between the fluid ice and the mold body 1; the mounting cavity 6 is provided with an ice-breaking assembly 7, and the ice-breaking assembly 7 includes an impeller 71 rotatably connected to the wall of the mounting cavity 6, and the impeller 71 partially extends into the liquid outlet channel 4, and a plurality of spikes 72 are provided on the surface of the impeller 71. When the fluid ice flows in the liquid outlet channel 4, it will push the impeller 71 to rotate, and the impeller 71 can block the fluid ice, and small ice particles will be broken when they hit the impeller 71, the spikes 72 and the liquid outlet channel 4, so that the small ice particles can quickly exchange heat with ice water.

[0035] An ice guide assembly 8 is provided in the liquid outlet channel 4, and the ice guide assembly 8 includes an ice filter plate 81 embedded in the liquid outlet channel 4 and a connecting channel 82 connected to the two ends of the liquid outlet channel 4. The ice filter plate 81 is located at one end of the liquid outlet channel 4 away from the cooling channel 3, and the ice filter plate 81 can block small ice particles in the fluid ice; the ice filter plate 81 is arranged at an angle, so that the small ice particles in the fluid ice can be guided to the connecting channel 82, and the small ice particles will flow through the connecting channel 82 to the end of the liquid outlet channel 4 close to the cooling channel 3, and the small ice particles will continue to flow and be broken again by the ice breaking assembly 7, thereby improving the utilization effect of the ice particles in the fluid ice.

[0036] A check valve 83 is provided in the connecting channel 82, and the check valve 83 is used to block the fluid ice at one end of the liquid outlet channel 4 close to the cooling channel 3 from flowing through the connecting channel 82 to the end of the liquid outlet channel 4 away from the cooling channel 3. Therefore, only the small ice particles blocked by the ice filter plate 81 can pass through the connecting channel 82 with the ice water and flow to the end of the liquid outlet channel 4 close to the cooling channel 3, thereby ensuring the flow time of the fluid ice in the liquid outlet channel 4 and accelerating the flow of the fluid ice at the end of the liquid outlet channel 4 close to the cooling channel 3, thereby improving the heat exchange effect between the fluid ice and the mold body 1.

[0037] The implementation principle of an injection mold that is easy to dissipate heat in an embodiment of the present application is as follows: when the fluid ice enters the liquid inlet channel 2, the fluid ice in the liquid inlet channel 2 will directly exchange heat with the mold body 1, and then the fluid ice will enter the heat pipe 52 and exchange heat with the mold body 1 through the heat pipe 52 and the heat plate 51, and then the large ice particles in the fluid ice will be embedded in the ice-blocking nozzle 53, and the ice water in the fluid ice will accelerate through the gap between the large ice particles and the inner wall of the ice-blocking nozzle 53 and flow into the cooling channel 3, so that the large ice particles can melt more quickly, so the fluid ice will always be maintained at a lower temperature, thereby improving the cooling effect on the mold body 1.

[0038] When the large ice particles gradually melt into small ice particles, the ice water will drive the small ice particles to spray out of the ice blocking nozzle 53 and enter the cooling channel 3. Some of the small ice particles will collide with the cooling channel 3 and be broken, thereby increasing the contact area between the ice particles and the ice water, so that the ice water with increased temperature can quickly exchange heat with the ice particles.

[0039] Afterwards, the fluid ice will flow into the liquid outlet channel 4 and push the impeller 71 to rotate. The impeller 71 can block the fluid ice, and small ice particles will be broken when hitting the impeller 71, the spikes 72 and the liquid outlet channel 4, so that the small ice particles can quickly exchange heat with the ice water; then the ice filter plate 81 will block the small ice particles and guide them into the connecting channel 82. The small ice particles will flow through the connecting channel 82 to the end of the liquid outlet channel 4 close to the cooling channel 3, and the small ice particles will continue to flow and be broken again by the ice breaking assembly 7, thereby improving the utilization effect of the ice particles in the fluid ice.

[0040] In summary, the present application realizes multiple cooling of the mold body 1, so that the injection mold can be cooled faster and the injection molding efficiency is improved.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection mold that is easy to dissipate heat, characterized in that: The invention comprises two mutually matched mold bodies (1), wherein the mold bodies (1) are provided with a liquid inlet channel (2), a cooling channel (3) and a liquid outlet channel (4) which are connected in sequence, wherein fluid ice flows in the liquid inlet channel (2), the cooling channel (3) and the liquid outlet channel (4), and the ends of the liquid inlet channel (2) and the liquid outlet channel (4) which are away from the cooling channel (3) both penetrate the corresponding side of the mold body (1); the cooling channel (3) is connected to the liquid inlet channel (2) through an ice blocking component (5), the ice blocking component (5) is provided with a plurality of groups, the interior of the ice blocking component (5) is hollow and connected to the liquid inlet channel (2), the ice blocking component (5) is provided with a plurality of ice blocking nozzles (53), the cooling channel (3) is connected to the interior of the ice blocking component (5) through the ice blocking nozzles (53), and the opening area of ​​the ice blocking nozzles (53) gradually decreases from the interior of the ice blocking component (5) to the exterior of the ice blocking component (5); The mold body (1) is provided with a mounting cavity (6) in communication with the liquid outlet channel (4), an ice breaking assembly (7) is provided in the mounting cavity (6), and the ice breaking assembly (7) comprises an impeller (71) rotatably connected to the cavity wall of the mounting cavity (6), a portion of the impeller (71) extends into the liquid outlet channel (4), and when the fluid ice flows in the liquid outlet channel (4), it will push the impeller (71) to rotate; The impeller (71) is provided with a plurality of spikes (72) for ice particles to collide with; An ice guide assembly (8) is provided in the liquid outlet channel (4), the ice guide assembly (8) comprising an ice filter plate (81) embedded in the liquid outlet channel (4), the ice filter plate (81) being located at one end of the liquid outlet channel (4) away from the cooling channel (3); The ice guide assembly (8) further comprises a connecting channel (82) connected to both ends of the liquid outlet channel (4); the ice filter plate (81) is arranged in an inclined manner and is used to guide ice particles in the fluid ice into the connecting channel (82); the ice particles flow through the connecting channel (82) to one end of the liquid outlet channel (4) close to the cooling channel (3); A check valve (83) is provided in the connecting channel (82), and the check valve (83) is used to prevent the fluid ice at one end of the liquid outlet channel (4) close to the cooling channel (3) from flowing through the connecting channel (82) to one end of the liquid outlet channel (4) away from the cooling channel (3); The mold body (1) comprises a cooling seat (11) and an injection mold plate (12) which are detachably connected to each other, the two injection mold plates (12) are located between the two cooling seats (11), a plurality of corresponding injection cavities (14) are provided on opposite sides of the two injection mold plates (12), an injection channel connected to all the injection cavities (14) is provided on the injection mold plate (12), a liquid inlet channel (2) and a liquid outlet channel (4) are provided inside the cooling seat (11), and the cooling seat (11) and the injection mold plate (12) together form a cooling channel (3); A plurality of thread grooves (15) corresponding to the ice-blocking components (5) are provided on opposite sides of the two injection mold plates (12); a through groove (16) connected to the cooling channel (3) is provided on the bottom groove wall of the thread groove (15); the ice-blocking component (5) comprises a heat-conducting plate (51) and a heat-conducting pipe (52) connected to each other; the heat-conducting plate (51) is threadedly engaged with the thread groove (15); the diameter of the heat-conducting plate (51) is larger than the outer diameter of the heat-conducting pipe (52); the heat-conducting pipe (52) is penetrated by the through groove (16) and connected to the liquid inlet channel (2); and the ice-blocking nozzle (53) is provided on the side of the heat-conducting pipe (52) and connected to the inside of the heat-conducting pipe (52).

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