Injection mold frame with good heat dissipation performance and heat dissipation method thereof

Abstract

The present invention provides an injection mold frame with good heat dissipation performance and a heat dissipation method thereof, wherein the injection mold frame includes a male mold plate and a female mold plate, the male mold plate and the female mold plate are connected by a guide column, an upper fixed plate is provided on the female mold plate, the female mold plate includes a fixed frame embedded in the fixed frame and a movable plate with a cavity, the movable plate is provided with a demolding ejector pointing to the cavity, the upper fixed plate and the movable plate are respectively provided with a first injection channel and a second injection channel connected to each other; the upper fixed plate is provided with a push plate which passes through the upper fixed plate and contacts the movable plate, the male mold plate includes a sinking plate with a sinking cavity and a pressure plate with a core embedded in the sinking plate, the movable plate and the pressure plate cooperate, the sinking cavity is filled with liquid and is connected to a liquid tank through a lower flow channel, the liquid tank is filled with liquid and is connected to the fixed frame through an upper flow channel.

Description

Technical Field

[0001] The present invention relates to the technical field of mold bases, and in particular to an injection mold base with good heat dissipation performance and a heat dissipation method thereof. Background Art

[0002] An injection mold frame is a commonly used manufacturing tool for injection molded products. It generally consists of a male mold plate and a female mold plate, with a base plate located beneath the male mold plate and a push plate located above the female mold plate. During operation, the mold is closed, followed by injection molding, heat dissipation, and demolding. In the closed mold state, the extruder injects the material into the core cavity, which then dissipates heat. After the heat is dissipated, the mold is opened and the finished product is pushed out of the female mold plate by the push plate. Water cooling is currently the most common method for heat dissipation, with several fluid channels for water flowing through the female mold plate. The water flow cools the interior of the female mold plate to aid heat dissipation.

[0003] However, this heat dissipation method is not very efficient because it only dissipates heat from one side of the material. Secondly, on the heat dissipation side, to prevent the water flow from contacting the injection channel and solidifying the material, the fluid channel is usually arranged around the injection channel. Therefore, even on this heat dissipation side, the effective contact area provided by the water flow is limited. Furthermore, it is not negligible that providing a large heat dissipation area on the mother mold plate side is not conducive to the injection molding of thermoplastic materials. In summary, traditional injection mold frames suffer from insufficient heat dissipation performance. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an injection mold frame with good heat dissipation performance and a heat dissipation method thereof.

[0005] A technical solution of the present invention is an injection mold frame with good heat dissipation performance, comprising a male template and a female template, the male template and the female template being connected by a guide column, an upper fixed plate being provided on the female template, the female template comprising a fixed frame embedded in the fixed frame and a movable plate with a cavity, the movable plate being provided with a demolding ejector pointing to the cavity, the upper fixed plate and the movable plate being respectively provided with a first injection channel and a second injection channel connected to each other; a first movable cavity is provided in the upper fixed plate, a first movable cavity is provided on a side facing the movable plate and a first movable opening is provided, a first movable cavity is provided on a side facing away from the movable plate and a first telescopic groove is provided, a first telescopic member with one end provided at the first movable opening and the other end provided in the first telescopic groove and with a first oblique notch is provided in the first movable cavity, an end of the first telescopic member extending into the first telescopic groove is connected to a first compression spring provided in the first telescopic groove, a first movable channel is provided in the upper fixed plate and extends directly from the first movable cavity to the first injection channel, a first movable rod is provided in the first movable channel, and both sides of the first movable rod are provided with a plurality of movable rods extending into the first movable channel. and a lever, having one end in pinned connection to the bottom of the drag pole, the middle portion being a pin of the second end of the ramp, the middle portion being a pin of the second end of the ramp, and the other end being a pin of the second end of the ramp.

[0006] As an embodiment, when the movable plate and the upper fixed plate are attached to each other, the first telescopic member and the second telescopic member compress each other so that the first movable rod and the second movable rod are respectively received in the first movable channel and the second movable channel, and at this time the first injection channel and the second injection channel are connected; when the movable plate and the upper fixed plate are separated, the first telescopic member and the second telescopic member are respectively extended from the first movable port and the second movable port by the action of the first compression spring and the second compression spring, so that the first movable rod and the second movable rod respectively block the first injection channel and the second injection channel.

[0007] As an embodiment, a positioning column extending into the upper fixed plate is provided on the push plate.

[0008] As an embodiment, a clearance hole is provided on the push plate, and the clearance hole is opposite to the end of the first injection channel. The clearance hole is for an injection extrusion device connected to the first injection channel to pass through.

[0009] As an embodiment, the port of the downflow channel connected to the sink cavity is close to the bottom of the sink cavity, and the downflow channel is connected to the liquid tank through a lower external pipe.

[0010] As an embodiment, the upper flow channel is connected to a port in the fixing frame close to the top of the fixing frame, and the upper flow channel is connected to the liquid tank through an upper external pipe.

[0011] As an embodiment, the pressure plate is connected to the sink cavity via a spring column.

[0012] As an embodiment, the movable plate is in sealing contact with the fixed frame.

[0013] As an embodiment, the pressure plate and the sinker plate are in sealing contact.

[0014] Another technical solution of the present invention is a heat dissipation method using the above-mentioned injection mold frame with good heat dissipation performance, including: a pressing down step: the push plate is pressed down to cause the push rod to push the movable plate and the pressure plate downward to form a top cavity between the upper fixed plate and the movable plate, the first movable rod and the second movable rod respectively cut off the first injection channel and the second injection channel, and the liquid in the sinking cavity enters the liquid tank as the pressure plate moves downward, and is introduced into the liquid in the liquid tank as the top cavity is formed; an pushing up step: the pressure plate is restoratively reset upward to reduce the space of the top cavity, so that part of the liquid in the top cavity enters the liquid tank, and the liquid in the liquid tank that completes heat exchange enters the sinking cavity again to replace the liquid in the sinking cavity used for the previous heat dissipation.

[0015] Compared with the prior art, the beneficial effect of the present invention is that it changes the traditional heat dissipation method of the injection mold frame and proposes a new heat dissipation method. Heat dissipation is carried out when the male mold plate and the female mold plate are in the mold closing state. Before the push plate is pressed down, the movable plate and the upper fixed plate are attached to each other, and the first injection channel and the second injection channel are connected. The material injected into the core cavity by the extruder can pass through the first injection channel and the second injection channel. When the push plate is pressed down, the injection molding is completed. By pressing down the movable plate and the pressure plate, the water in the sink cavity can be led into the liquid tank. At the same time, when the movable plate and the pressure plate are pressed down, a top cavity is formed between the upper fixed plate and the movable plate. And when the movable plate and the upper fixed plate are separated, the first movable rod and the second movable rod respectively block the first injection channel and the second injection channel. When the push rod controls the movable plate and the pressure plate to press down, the water in the sink cavity that was previously used for heat dissipation is drained, and heat exchange is completed in the liquid tank. The movable platen and pressure platen are then controlled to reset until the top cavity and sink cavity spaces are roughly equivalent. The water refilled into the sink cavity is then at a lower temperature, dissipating heat evenly on both sides. Consequently, large water cooling areas are provided on both sides of the core cavity, assisting in rapid cooling and molding within the core cavity, resulting in excellent heat dissipation. After the pressure platen is pushed upward, the ejector pins retract, and the movable platen and pressure platen are reset, eliminating the top cavity and draining all water from it. At this point, the male and female molds open, and the ejector pins push the finished product from the female mold to complete demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A partial cross-sectional view of an injection mold frame with good heat dissipation performance provided by an embodiment of the present invention;

[0017] Figure 2 An enlarged cross-sectional view of an injection mold frame with good heat dissipation performance provided by an embodiment of the present invention;

[0018] Figure 3 This is a schematic structural diagram of an injection mold frame with good heat dissipation performance provided by an embodiment of the present invention.

[0019] In the figure: 1, male template; 2, female template; 3, guide pillar; 4, upper fixed plate; 5, fixed frame; 6, movable plate; 7, demoulding ejector pin; 8, first injection channel; 9, second injection channel; 10, first movable cavity; 11, first movable opening; 12, first telescopic groove; 13, first oblique groove opening; 14, first telescopic member; 15, first compression spring; 16, first movable channel; 17, first movable rod; 18, first end shaft; 19, second movable cavity; 20, second movable opening; 2 1. Second telescopic slot; 22. Second oblique slot; 23. Second telescopic member; 24. Second compression spring; 25. Second movable channel; 26. Second movable rod; 27. Second end shaft; 28. Ejector rod; 29. Push plate; 30. Sinking cavity; 31. Sinking plate; 32. Pressing plate; 33. Downflow channel; 34. Liquid tank; 35. Upflow channel; 36. Positioning column; 37. Clearance hole; 38. Injection extrusion device; 39. Lower external pipe; 40. Upper external pipe; 41. Spring column; 42. Ejecting cavity. DETAILED DESCRIPTION

[0020] The above and other embodiments and advantages of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments.

[0021] In one embodiment, Figure 1-2 shown.

[0022] The injection mold frame with good heat dissipation performance provided in this embodiment includes a male mold plate 1 and a female mold plate 2, which are connected by a guide column 3. It is characterized in that an upper fixed plate 4 is provided on the female mold plate 2, and the female mold plate 2 includes a fixed frame 5, a movable plate 6 with a cavity embedded in the fixed frame 5, and a demolding pin 7 pointing to the cavity is provided in the movable plate 6. The upper fixed plate 4 and the movable plate 6 are respectively provided with a first injection channel 8 and a second injection channel 9 connected to each other. A first movable cavity 10 is provided in the upper fixed plate 4, and a first movable opening 11 is provided on the side of the first movable cavity 10 facing the movable plate 6, and a first telescopic groove 12 is provided on the side of the first movable cavity 10 facing away from the movable plate 6. A first telescopic member 14 with one end located in the first movable opening 11 and the other end located in the first telescopic groove 12 and having a first oblique groove opening 13 is provided in the first movable cavity 10, and one end of the first telescopic member 14 extending into the first telescopic groove 12 is connected to a first compression spring 15 provided in the first telescopic groove 12, and a first movable channel 16 extending from the first movable cavity 10 directly to the first injection channel 8 is provided in the upper fixed plate 4, a first movable rod 17 is provided in the first movable channel 16, and first end shafts 18 extending into the first oblique groove opening 13 are provided on both sides of the first movable rod 17. A second movable cavity 19 is provided in the movable plate 6, and a second movable opening 20 is provided on the side of the second movable cavity 19 facing the upper fixed plate 4, and a second telescopic groove 21 is provided on the side of the second movable cavity 19 facing away from the upper fixed plate 4. A second telescopic member 23 with one end located at the second movable opening 20 and the other end located in the second telescopic groove 21 and having a second oblique groove opening 22 is provided in the second movable cavity 19, and one end of the second telescopic member 23 extending into the second telescopic groove 21 is connected to a second compression spring 24 provided in the second telescopic groove 21. A second movable channel 25 extending from the second movable cavity 19 directly to the second injection channel 9 is provided in the movable plate 6, and a second movable rod 26 is provided in the second movable channel 25, and second end shafts 27 extending into the second oblique groove opening 22 are provided on both sides of the second movable rod 26. The upper fixed plate 4 is provided with a push rod 28 that passes through the upper fixed plate 4 and contacts a push plate 29 of the movable plate 6. The male template 1 includes a sinking plate 31 with a sinking cavity 30 and a pressure plate 32 with a core embedded in the sinking plate 31. The movable plate 6 and the pressure plate 32 cooperate with each other. The sinking cavity 30 is filled with liquid and is connected to a liquid tank 34 through a lower flow channel 33. The liquid tank 34 is filled with liquid and is connected to the fixed frame 5 through an upper flow channel 35.

[0023] In this embodiment, in order to solve the problem of poor heat dissipation performance and low heat dissipation efficiency of the traditional injection mold frame, a new heat dissipation form of injection mold frame is proposed. In the injection molding step after mold closing, since the movable plate 6 and the upper fixed plate 4 are attached to each other, as shown in FIG. Figure 1 and Figure 2In the state shown, the first telescopic member 14 and the second telescopic member 23 contact each other and are compressed. The shapes of the first telescopic member 14 and the second telescopic member 23 are mirror images of each other, both having a middle oblique section and two ends inside and outside, as shown in the figure, the mutual contact here refers to that the outer end of the first telescopic member 14 located at the first movable opening 11 and the outer end of the second telescopic member 23 located at the second movable opening 20 contact each other, thereby the first telescopic member 14 and the second telescopic member 23 are compressed inwardly, that is, they are respectively received in the first movable cavity 10 and the second movable cavity 19, at this time, the inner end of the first telescopic member 14 located at the first telescopic groove 12 and the inner end of the second telescopic member 23 located at the second telescopic groove 21 compress the first compression spring 15 and the second compression spring 24 respectively. The oblique sections in the middle of the first telescopic member 14 and the second telescopic member 23 are respectively provided with a first oblique notch 13 and a second oblique notch 22. The positions of the first oblique notch 13 and the second oblique notch 22 change as the first telescopic member 14 and the second telescopic member 23 telescope and move in their respective movable chambers, and the first movable rod 17 and the second movable rod 26 are respectively matched with the first oblique notch 13 and the second oblique notch 22 through their respective end shafts. When the positions of the first oblique notch 13 and the second oblique notch 22 change, the first movable rod 17 and the second movable rod 26 are also moved in the first movable channel 16 and the second movable channel 25 respectively. Correspondingly, when the movable plate 6 and the upper fixed plate 4 are attached to each other, the first telescopic member 14 and the second telescopic member 23 compress each other so that the first movable rod 17 and the second movable rod 26 are respectively received in the first movable channel 16 and the second movable channel 25, at which time the first injection channel 8 and the second injection channel 9 are communicated. The extruder then injects the material into the core cavity through the first and second injection channels 8, 9. At this point, the top cavity 42 is not formed between the upper fixed plate 4 and the movable plate 6, which does not affect the normal injection of the high-temperature material into the core cavity. It should be noted that to maintain the good thermoplastic properties of the high-temperature material during injection molding, it is not advisable to inject water into the top cavity 42 to dissipate heat at this stage. However, on the other side, the core mold plate 1, which is farther away from the first and second injection channels 8, 9, can be filled with water in its sink cavity 30 without affecting injection molding, but can dissipate heat.

[0024] After the injection molding is completed, the push plate 29 on the upper fixed plate 4 is pressed down, and the movable plate 6 is pressed down by the push rod 28. At this time, because the male mold plate 1 and the female mold plate 2 are closed, the movable plate 6 and the pressure plate 32 are also combined. Then, by pressing the movable plate 6 and the pressure plate 32 downward, the water in the sink cavity 30 can be diverted into the liquid tank 34. At the same time, when the movable plate 6 and the pressure plate 32 are pressed downward, a top cavity 42 is formed between the upper fixed plate 4 and the movable plate 6. This top cavity 42 is surrounded by the fixed frame 5. When the top cavity 42 is formed, due to the separation of the upper fixed plate 4 and the movable plate 6, the first telescopic member 14 and the second telescopic member 23 are respectively extended outward by the action of the first compression spring 15 and the second compression spring 24. As mentioned above, when the position of the first oblique notch 13 and the second oblique notch 22 changes, the first movable rod 17 and the second movable rod 26 are also moved in the first movable channel 16 and the second movable channel 25 respectively. Corresponding to this, when the movable plate 6 and the upper fixed plate 4 are separated, the first telescopic member 14 and the second telescopic member 23 are respectively extended from the first movable port 11 and the second movable port 20 by the action of the first compression spring 15 and the second compression spring 24, so that the first movable rod 17 and the second movable rod 26 respectively block the first injection channel 8 and the second injection channel 9. Prevent water from entering the upper fixed plate 4 and the movable plate 6. When forming the top cavity 42, the water in the liquid tank 34 can also be led into the top cavity 42. As a result, there is a large area of water cooling and heat dissipation on both sides of the core cavity, which can assist in the rapid cooling and molding in the core cavity and has good heat dissipation performance. After heat dissipation, the ejector rod 28 is retracted, and the movable plate 6 and the pressure plate 32 are reset, eliminating the top cavity 42 while draining the water in the top cavity 42. At this time, the male template 1 and the female template 2 are opened, and the demolding ejector pin 7 pushes the finished product out of the female template 2 to complete the demolding.

[0025] In this embodiment, excellent heat dissipation performance is also demonstrated by the fact that when the top rod 28 controls the downward movement of the movable plate 6 and the pressure plate 32, the water previously used for heat dissipation in the sink cavity 30 is drained, completing the heat exchange within the liquid tank 34. The movable plate 6 and the pressure plate 32 are then controlled to reset until the space in the top cavity 42 is roughly equal to that in the sink cavity 30. The water then refilled into the sink cavity 30 is at a lower temperature, thereby achieving even heat dissipation on both sides. Furthermore, just as the top cavity 42 is about to be formed, the first movable rod 17 and the second movable rod 26 immediately block the first injection channel 8 and the second injection channel 9, respectively. Only after the top cavity 42 is eliminated do the first movable rod 17 and the second movable rod 26 connect the first injection channel 8 and the second injection channel 9. Consequently, the first movable channel 16 and the second movable channel 25 are perpendicular to the first injection channel 8 and the second injection channel 9, and there is excess length on the side away from the two movable cavities. In this embodiment, other heat dissipation liquids can also be used instead of water.

[0026] In one embodiment, Figure 2 shown.

[0027] The injection mold frame provided in this embodiment has good heat dissipation performance. When the movable plate 6 and the upper fixed plate 4 are in contact with each other, the first telescopic member 14 and the second telescopic member 23 compress each other so that the first movable rod 17 and the second movable rod 26 are respectively retracted into the first movable channel 16 and the second movable channel 25. At this time, the first injection channel 8 and the second injection channel 9 are connected. When the movable plate 6 and the upper fixed plate 4 are separated, the first telescopic member 14 and the second telescopic member 23 are respectively extended from the first movable opening 11 and the second movable opening 20 by the first compression spring 15 and the second compression spring 24, so that the first movable rod 17 and the second movable rod 26 respectively block the first injection channel 8 and the second injection channel 9.

[0028] In this embodiment, when the movable plate 6 and the upper fixed plate 4 are in contact with each other, the top cavity 42 is eliminated, and the first injection channel 8 and the second injection channel 9 are connected. When the movable plate 6 and the upper fixed plate 4 are separated, the top cavity 42 is formed, and the first injection channel 8 and the second injection channel 9 are both blocked.

[0029] In one embodiment, Figure 3 shown.

[0030] The injection mold frame provided in this embodiment has good heat dissipation performance, and its push plate 29 is provided with a positioning column 36 extending into the upper fixing plate 4.

[0031] In this embodiment, the positioning column 36 is provided to achieve the positioning of the push plate 29 .

[0032] In one embodiment, Figure 3 shown.

[0033] The injection mold frame with good heat dissipation performance provided in this embodiment has a clearance hole 37 on its push plate 29, which is opposite to the end of the first injection channel 8. The clearance hole 37 is for the injection extrusion device 38 connected to the first injection channel 8 to pass through.

[0034] In this embodiment, a clearance hole 37 is provided on the push plate 29 so that the end of the injection extrusion device 38 can pass through it.

[0035] In one embodiment, Figure 1 and Figure 3 shown.

[0036] The injection mold frame provided in this embodiment has good heat dissipation performance. Its lower flow channel 33 is connected to the port of the sink cavity 30 near the bottom of the sink cavity 30. The lower flow channel 33 is connected to the liquid tank 34 through the lower external pipe 39. Its upper flow channel 35 is connected to the port in the fixed frame 5 near the top of the fixed frame 5. The upper flow channel 35 is connected to the liquid tank 34 through the upper external pipe 40.

[0037] In this embodiment, the lower external pipe 39 connects the lower flow channel 33 and the liquid tank 34 to form a fluid channel between the sink chamber 30 and the liquid tank 34. The upper external pipe 40 connects the upper flow channel 35 and the liquid tank 34 to form a fluid channel between the top chamber 42 and the liquid tank 34.

[0038] In one embodiment, Figure 1 shown.

[0039] The injection mold frame provided in this embodiment has good heat dissipation performance, and its pressing plate 32 is connected to the sink cavity 30 through the spring column 41.

[0040] In this embodiment, due to the presence of the spring column 41 , the pressure plate 32 can be reset autonomously. The aforementioned restorative reset is the result of the cooperation between the ejector rod 28 and the spring column 41 .

[0041] In addition, in one embodiment, the movable plate 6 is in sealed contact with the fixed frame 5. The pressing plate 32 is in sealed contact with the sinking plate 31.

[0042] In one embodiment, based on the above-mentioned injection mold frame with good heat dissipation performance, its heat dissipation method includes: a downward pressing step: the push plate 29 is pressed downward so that the ejector rod 28 pushes the movable plate 6 and the pressure plate 32 downward to form a top cavity 42 between the upper fixed plate 4 and the movable plate 6, the first movable rod 17 and the second movable rod 26 respectively cut off the first injection channel 8 and the second injection channel 9, the liquid in the sink cavity 30 all enters the liquid tank 34 as the pressure plate 32 moves downward, and the liquid in the liquid tank 34 is introduced as the top cavity 42 is formed. an upward pushing step: the pressure plate 32 is restoratively reset upward to reduce the space of the top cavity 42, so that part of the liquid in the top cavity 42 enters the liquid tank 34, and the liquid in the liquid tank 34 that has completed heat exchange enters the sink cavity 30 again to replace the liquid in the sink cavity 30 used for the previous heat dissipation.

[0043] In this embodiment, a novel heat dissipation method is proposed, rather than the traditional heat dissipation method of the injection mold frame. Both the pressing and pushing steps are performed with the male mold plate 1 and female mold plate 2 in the closed state. Before pressing down, the movable plate 6 and the upper fixed plate 4 are in contact with each other, allowing the first injection channel 8 and the second injection channel 9 to communicate. Material injected into the core cavity by the extruder can pass through the first injection channel 8 and the second injection channel 9. During the pressing down phase, injection molding is complete. Pressing the movable plate 6 and the pressure plate 32 downwards allows the water in the sink cavity 30 to be diverted into the liquid tank 34. Simultaneously, the downward pressing of the movable plate 6 and the pressure plate 32 also forms a top cavity 42 between the upper fixed plate 4 and the movable plate 6. Furthermore, when the movable plate 6 and the upper fixed plate 4 are separated, the first movable rod 17 and the second movable rod 26 respectively block the first injection channel 8 and the second injection channel 9. When the push rod 28 controls the downward pressing of the movable plate 6 and the pressure plate 32, the water previously used for heat dissipation in the sink cavity 30 is drained, completing the heat exchange within the liquid tank 34. Then control the movable plate 6 and the pressure plate 32 to reset for repair until the space of the top cavity 42 and the space of the sink cavity 30 are roughly equivalent. Then, the water temperature refilled into the sink cavity 30 is lower, so the heat can be evenly dissipated on both sides. Therefore, there is a large area of water cooling and heat dissipation on both sides of the core cavity, which can assist in the rapid cooling and molding of the core cavity and has good heat dissipation performance. After pushing up, the ejector pin 28 is retracted, and the movable plate 6 and the pressure plate 32 are reset, eliminating the top cavity 42 while draining all the water in the top cavity 42. At this time, the male template 1 and the female template 2 are opened, and the demolding ejector pin 7 pushes the finished product out of the female template 2 to complete the demolding.

[0044] The specific embodiments described above further illustrate the purpose of the present invention, technical solutions, and beneficial effects. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. In particular, it should be noted that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An injection mold frame with good heat dissipation performance, comprising a male mold plate (1) and a female mold plate (2), wherein the male mold plate (1) and the female mold plate (2) are connected by a guide column (3), characterized in that: An upper fixed plate (4) is provided on the mother template (2), and the mother template (2) comprises a fixed frame (5) and a movable plate (6) with a mold cavity embedded in the fixed frame (5), wherein a demoulding ejector (7) pointing to the mold cavity is provided in the movable plate (6), and a first injection channel (8) and a second injection channel (9) connected to each other are respectively provided in the upper fixed plate (4) and the movable plate (6); A first movable cavity (10) is provided in the upper fixed plate (4), a first movable opening (11) is provided on the side of the first movable cavity (10) facing the movable plate (6), a first telescopic groove (12) is provided on the side of the first movable cavity (10) facing away from the movable plate (6), a first telescopic member (14) with one end arranged in the first movable opening (11) and the other end arranged in the first telescopic groove (12) and having a first oblique groove opening (13) is provided in the first movable cavity (10), one end of the first telescopic member (14) extending into the first telescopic groove (12) is connected to a first compression spring (15) arranged in the first telescopic groove (12), a first movable channel (16) extending from the first movable cavity (10) directly to the first injection channel (8) is provided in the upper fixed plate (4), a first movable rod (17) is provided in the first movable channel (16), and first end shafts (18) extending into the first oblique groove opening (13) are provided on both sides of the first movable rod (17); A second movable cavity (19) is provided in the movable plate (6), and a second movable opening (20) is provided on the side of the second movable cavity (19) facing the upper fixed plate (4), and a second telescopic groove (21) is provided on the side of the second movable cavity (19) facing away from the upper fixed plate (4). A second telescopic member (23) with one end located in the second movable opening (20) and the other end located in the second telescopic groove (21) and having a second oblique groove opening (22) is provided in the second movable cavity (19), and one end of the second telescopic member (23) extending into the second telescopic groove (21) is connected to a second compression spring (24) provided in the second telescopic groove (21). A second movable channel (25) extending from the second movable cavity (19) directly to the second injection channel (9) is provided in the movable plate (6), and a second movable rod (26) is provided in the second movable channel (25), and second end shafts (27) extending into the second oblique groove opening (22) are provided on both sides of the second movable rod (26); The upper fixed plate (4) is provided with a push rod (28) that passes through the upper fixed plate (4) and contacts a push plate (29) of the movable plate (6); the male plate (1) includes a sinking plate (31) provided with a sinking cavity (30) and a pressure plate (32) with a core embedded in the sinking plate (31); the movable plate (6) and the pressure plate (32) cooperate with each other; the sinking cavity (30) is filled with liquid and is connected to a liquid tank (34) through a lower flow channel (33); the liquid tank (34) is filled with liquid and is connected to the fixed frame (5) through an upper flow channel (35).

2. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: When the movable plate (6) and the upper fixed plate (4) are in contact with each other, the first telescopic member (14) and the second telescopic member (23) are compressed against each other so that the first movable rod (17) and the second movable rod (26) are respectively received in the first movable channel (16) and the second movable channel (25), and at this time, the first injection channel (8) and the second injection channel (9) are communicated with each other; when the movable plate (6) and the upper fixed plate (4) are separated, the first telescopic member (14) and the second telescopic member (23) are respectively acted upon by the first compression spring (15) and the second compression spring (24) to extend from the first movable opening (11) and the second movable opening (20), so that the first movable rod (17) and the second movable rod (26) respectively block the first injection channel (8) and the second injection channel (9).

3. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: The push plate (29) is provided with a positioning column (36) extending into the upper fixed plate (4).

4. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: The push plate (29) is provided with a clearance hole (37), the clearance hole (37) is opposite to the end of the first injection channel (8), and the clearance hole (37) is for the injection extrusion device (38) connected to the first injection channel (8) to pass through.

5. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: The port of the lower flow channel (33) connected to the sink cavity (30) is close to the bottom of the sink cavity (30), and the lower flow channel (33) is connected to the liquid tank (34) through a lower external pipe (39).

6. The injection mold frame with good heat dissipation performance according to claim 5, characterized in that: The upper flow channel (35) is connected to a port in the fixed frame (5) near the top of the fixed frame (5), and the upper flow channel (35) is connected to the liquid tank (34) through an upper external pipe (40).

7. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: The pressing plate (32) is connected to the sink cavity (30) via a spring column (41).

8. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: The movable plate (6) and the fixed frame (5) are in sealed contact.

9. The injection mold frame with good heat dissipation performance according to claim 1, characterized in that: The pressing plate (32) and the sinking plate (31) are in sealed contact.

10. A heat dissipation method, characterized in that: The injection mold frame with good heat dissipation performance according to any one of claims 1 to 9 comprises: Pressing down step: the push plate (29) is pressed down so that the push rod (28) pushes the movable plate (6) and the pressure plate (32) downward to form a top cavity (42) between the upper fixed plate (4) and the movable plate (6); the first movable rod (17) and the second movable rod (26) respectively cut off the first injection channel (8) and the second injection channel (9); the liquid in the sinking cavity (30) all enters the liquid tank (34) as the pressure plate (32) moves downward, and the liquid in the liquid tank (34) is introduced as the top cavity (42) is formed; Pushing up step: the pressure plate (32) is repositioned upward to reduce the space of the top cavity (42), so that part of the liquid in the top cavity (42) enters the liquid tank (34), and the liquid in the liquid tank (34) that completes the heat exchange enters the sink cavity (30) to replace the liquid in the sink cavity (30) used for the previous heat dissipation.

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