Injection mold

Abstract

The present application relates to the field of injection molding, and discloses an injection mold, characterized in that the injection mold comprises an upper mold; a lower mold, wherein an injection cavity extending downward from the upper surface of the lower mold to the interior thereof is formed in the lower mold, a demoulding cavity extending downward from the bottom of the injection cavity is formed in the lower mold, a cooling channel is formed in the lower mold, and cooling gas flows in the cooling channel to cool the lower mold; a first air supply component, wherein the first air supply component comprises an air supply pump, an input pipeline and a return pipeline, wherein the air supply pump is connected to the cooling channel of the lower mold through the input pipeline, and the return pipeline is connected to the cooling channel of the lower mold; a demoulding component, wherein the demoulding component is located in the demoulding cavity; and a demoulding pipeline component, wherein the demoulding pipeline component is respectively connected to the return pipeline and the demoulding cavity to realize the demoulding component moving up and down in the demoulding cavity. Provided is an injection mold that can keep a constant cooling temperature when cooling the injection mold gas.

Description

Technical Field

[0001] The present application relates to the field of injection molding, and in particular to an injection mold. Background Art

[0002] Injection molding is a commonly used processing method, which specifically involves injecting a molten plastic fluid into the cavity of an injection mold for cooling and molding.

[0003] Existing injection molds often use gas cooling, and gas-assisted demolding is used to demold the injection molded parts. However, the cooling time of the injection mold is longer than the demolding time. In order to increase work efficiency, injection demolding and injection mold cooling are performed at the same time. However, injection demolding often causes gas partial pressure, resulting in an inconstant gas flow rate for cooling the injection mold, which in turn leads to an inconstant cooling temperature for the injection mold, which will directly affect the quality of the injection molded parts. Utility Model Content

[0004] The present application mainly solves the technical problem that the existing technology cannot keep the cooling temperature of the injection mold constant when the injection mold is cooled by gas, and provides an injection mold that can keep the cooling temperature constant when the injection mold is cooled by gas.

[0005] In order to solve the above technical problems, the present application provides an injection mold, characterized in that the injection mold comprises:

[0006] upper mold;

[0007] A lower mold, wherein an injection cavity extending downward from an upper surface of the lower mold to an interior thereof is formed in the lower mold, a demolding cavity extending downward from a bottom of the injection cavity is formed in the lower mold, and a cooling channel is formed in the lower mold, and cooling gas flows in the cooling channel to cool the lower mold;

[0008] A first air supply component, the first air supply component comprising an air supply pump, an input pipeline and a return pipeline, the air supply pump is connected to the cooling channel of the lower mold through the input pipeline, and the return pipeline is connected to the cooling channel of the lower mold;

[0009] A demoulding component, wherein the demoulding component is located in the demoulding cavity;

[0010] The demoulding pipeline assembly is connected to the return pipeline and the demoulding cavity respectively to realize the up and down movement of the demoulding assembly in the demoulding cavity.

[0011] In one possible implementation manner, a plurality of the injection cavities are formed in the lower mold, and the demoulding components are disposed in each of the injection cavities.

[0012] In one possible implementation manner, the return pipeline includes a main return pipe and an output pipe, the demolding pipeline assembly includes a main air pipe and a secondary air pipe, the first end of the main return pipe is connected to the cooling channel, the second end of the main return pipe is connected to the output pipe and the main air pipe respectively through a reversing valve, and each of the injection molding cavities is connected to the main air pipe through the secondary air pipe.

[0013] In one possible implementation manner, a first end of the cooling channel is connected to the input pipeline, and a second end of the cooling channel is connected to the return pipeline.

[0014] In one embodiment, the injection mold further comprises:

[0015] A lower shell body is provided with a first accommodating space therein, the lower shell body is connected to the bottom of the lower mold, and the first air supply assembly and the demoulding pipeline assembly are both located in the first accommodating space.

[0016] In one embodiment, the demolding cavity includes a first cavity, a second cavity and a third cavity arranged in sequence along a first direction, the second cavity is connected to the first cavity and the third cavity respectively, the first cavity is connected to the injection cavity, the third cavity is connected to the demolding pipeline assembly, and the cross-sectional area of ​​the second cavity is smaller than the cross-sectional area of ​​the first cavity and the third cavity.

[0017] In one embodiment, the demolding assembly includes a top plate, a connecting rod and a support plate arranged in sequence along the first direction, the connecting rod is connected to the top plate and the support plate respectively, the top plate is located in the first cavity or the injection molding cavity, the connecting rod is located in the second cavity and extends to the third cavity, the support plate is located in the third cavity, and the support plate is arranged along the second direction.

[0018] In one embodiment, the demolding assembly also includes an elastic member, which is located in the third cavity, the first end of the elastic member abuts against the top of the third cavity, the second end of the elastic member abuts against the support plate, and the elastic member is sleeved outside the connecting rod.

[0019] In one embodiment, an injection protrusion extending downward from the lower surface of the upper mold is formed on the upper mold, and a cooling channel is formed in the upper mold. Cooling gas flows in the cooling channel to cool the upper mold.

[0020] In one possible implementation, the second air supply component includes an air supply pump, an input pipeline and a return pipeline, the air supply pump is connected to the cooling channel of the upper mold through the input pipeline, and the return pipeline is connected to the cooling channel of the upper mold.

[0021] Compared with the prior art, the air supply pump generates cooling gas, which flows into the cooling channel of the lower mold through the input pipeline to cool down the lower mold by taking away the temperature inside the lower mold. After cooling down, the cooling gas flows out of the cooling channel through the return pipeline, and the demoulding pipeline assembly is connected to the return pipeline to transport the cooling gas in the return pipeline into the demoulding cavity, so that the demoulding assembly can move up and down in the demoulding cavity and realize the demoulding of the injection molded parts. At this time, the cooling of the injection mold and the demoulding of the injection molded parts are operated at the same time, and the demoulding of the injection molded parts uses the cooling gas after the injection mold is cooled, rather than the gas directly output from the air supply pump. Therefore, there is no situation where the air supply pump is divided into the input pipeline and the demoulding pipeline assembly, so the cooling gas pressure in the cooling channel can be guaranteed to be constant, and the cooling temperature of the injection mold can be further guaranteed to be constant.

[0022] Therefore, the present application has the characteristics of reasonable structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 It is a structural schematic diagram of the injection mold of the present application;

[0024] Attached Figure 2 It is a structural schematic diagram of the upper mold or lower mold of the present application;

[0025] Attached Figure 3 This application is attached Figure 1 A local enlarged view of point A.

[0026] Description of the numbers in the figure:

[0027] X, second direction; Y, first direction;

[0028] 100, upper mold; 110, injection molding protrusion;

[0029] 200, lower mold; 210, injection molding cavity; 220, demoulding cavity; 221, first cavity; 222, second cavity; 223, third cavity; 230, cooling channel;

[0030] 300, lower shell; 310, first accommodating cavity;

[0031] 400, first air supply assembly; 410, air supply pump; 420, input pipeline; 430, return pipeline; 431, main return pipe; 432, output pipe;

[0032] 500, demoulding assembly; 510, top plate; 520, connecting rod; 530, supporting plate; 540, elastic member;

[0033] 600, demoulding pipeline assembly; 610, main gas pipeline; 620, secondary gas pipeline; 630, reversing valve;

[0034] 700, upper housing; 710, second accommodation space;

[0035] 800, second air supply assembly;

[0036] 900. Fixing parts. DETAILED DESCRIPTION

[0037] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0038] The prior art has a technical problem that when gas cools the injection mold, the cooling temperature of the injection mold cannot be kept constant.

[0039] To this end, the present application provides an injection mold, wherein the injection mold comprises:

[0040] upper mold;

[0041] A lower mold, wherein an injection cavity extending downward from an upper surface of the lower mold to an interior thereof is formed in the lower mold, a demolding cavity extending downward from a bottom of the injection cavity is formed in the lower mold, and a cooling channel is formed in the lower mold, and cooling gas flows in the cooling channel to cool the lower mold;

[0042] A first air supply component, the first air supply component comprising an air supply pump, an input pipeline and a return pipeline, the air supply pump is connected to the cooling channel of the lower mold through the input pipeline, and the return pipeline is connected to the cooling channel of the lower mold;

[0043] A demoulding component, wherein the demoulding component is located in the demoulding cavity;

[0044] The demoulding pipeline assembly is connected to the return pipeline and the demoulding cavity respectively to realize the up and down movement of the demoulding assembly in the demoulding cavity.

[0045] Embodiment 1:

[0046] Attached Figure 1 This is a structural diagram of the injection mold of this application. Please refer to the attached Figure 1As shown, the injection mold of the present application includes a lower mold 200, and an injection cavity 210 is formed by extending downward from the upper surface of the lower mold 200. The specific shape of the injection cavity 210 of the lower mold 200 depends on the specific shape of the injection molded part. Figure 1 The injection cavity 210 in the figure is only one specific embodiment of the present application. The lower mold 200 has a demolding cavity 220, which is connected to the injection cavity. The demolding cavity 220 is formed by extending downward from the lower surface of the injection cavity. The lower mold 200 has a cooling channel 230, in which cooling gas flows. The cooling gas flows in and out of the cooling channel 230, thereby taking away the heat in the lower mold 200 to cool the lower mold 200.

[0047] In one embodiment, the lower mold 200 is a movable mold.

[0048] In one embodiment, the demolding cavity 220 extends downward from the lower surface of the injection cavity to the bottom of the lower mold 200 .

[0049] Please refer to the attached Figure 1 As shown, the injection mold of the present application further includes a first air supply component 400, which provides cooling gas for the cooling channel 230 in the lower mold 200 to achieve cooling of the lower mold 200. The first air supply component 400 includes an air supply pump 410, an input pipeline 420 and a return pipeline 430. The air supply pump 410 is a gas generating device. The input pipeline 420 is used to input the cooling gas generated by the air supply pump 410 into the cooling channel. The return pipeline 430 is used to output the cooled cooling gas from the cooling channel. The input pipeline, the cooling channel 230 and the return pipeline 430 together form a cooling circuit for the cooling gas. The cooling of the lower mold 200 is achieved by continuously inputting and outputting the cooling gas in the cooling channel 230. The air supply pump 410 is connected to the cooling channel 230 of the lower mold 200 through the input pipeline 420, and the return pipeline 430 is connected to the cooling channel 230 of the lower mold 200.

[0050] In one embodiment, the gas generated by the gas supply pump 410 is air or nitrogen.

[0051] Please refer to the attached Figure 1 As shown, the injection mold of the present application further includes a demoulding pipeline assembly 600, which is used to input the cooling gas output from the return pipeline 430 into the demoulding cavity 220. The demoulding pipeline assembly 600 is connected to the return pipeline 430 and the demoulding cavity 220 respectively.

[0052] Please refer to the attached Figure 1As shown, the injection mold of the present application further includes a demoulding assembly 500, which is located in the demoulding cavity 220. The demoulding assembly 500 can move up and down in the demoulding cavity 220 under the action of the cooling gas. When the cooling gas is input into the demoulding cavity 220, the demoulding assembly 500 moves upward and detaches from the demoulding cavity 220, and simultaneously ejects the injection molded part from the injection cavity to realize the demoulding of the injection molded part. When the cooling gas stops being input into the demoulding cavity 220, the demoulding assembly 500 falls back into the demoulding cavity 220, and the injection molding process can be started at this time.

[0053] In one embodiment, a plurality of injection cavities 210 are formed in the lower mold 200, and demolding components 500 are provided in each of the injection cavities 210 to ensure that the injection molded part can be demolded smoothly. Further, four more injection cavities 210 are formed in the lower mold 200, and the injection cavities 210 are cylindrical hole structures. The axis connecting the four injection cavities 210 forms a rectangle to ensure uniform force between the demolding components 500 and the injection molded part.

[0054] In one embodiment, the return pipe 430 includes a main return pipe 431 and an output pipe 432, and the demolding pipe assembly 600 includes a main air supply pipe 610 and a secondary air supply pipe 620. The first end of the main return pipe 431 is connected to the cooling channel 230, and the second end of the main return pipe 431 is connected to the output pipe 432 and the main air supply pipe 610 respectively through the reversing valve 630. Each injection cavity 210 is connected to the main air supply pipe 610 through the secondary air supply pipe 620. In this embodiment, the main air supply pipe 610 is bifurcated into a secondary air supply pipe 620 and connected to each injection cavity 210, so as to ensure that the amount of cooling gas input into each injection cavity 210 is consistent, and further realize that each demolding assembly 500 can rise synchronously.

[0055] In one embodiment, the first end of the cooling channel 230 is connected to the input pipeline 420, and the second end of the cooling channel 230 is connected to the return pipeline 430 to ensure that the running route length of the cooling gas in the cooling channel 230 is maximized, further improving the cooling efficiency of the cooling gas.

[0056] Please refer to the attached Figure 1 As shown, the injection mold of the present application further includes a lower shell 300, which is located at the bottom of the lower mold 200 and connected to the lower mold 200. A first accommodating space is formed in the lower shell 300, and the first air supply assembly 400 and the demoulding pipeline assembly 600 are both located in the first accommodating space.

[0057] In one embodiment, the cross-section of the lower housing 300 is a rectangular structure.

[0058] Please refer to the attached Figure 1As shown, the injection mold of the present application further includes an upper mold 100 adapted to the lower mold 200, and an injection protrusion 110 extending downward from the lower surface of the upper mold 100 is formed on the upper mold 100. When the lower mold 200 and the upper mold 100 are molded together, the injection protrusion 110 is located in the injection cavity 210. A cooling channel 230 is provided in the upper mold 100, and cooling gas flows in the cooling channel 230. The cooling gas flows in and out of the cooling channel 230, thereby taking away the heat in the upper mold 100 to cool the upper mold 100.

[0059] In one embodiment, the upper mold 100 is a fixed mold.

[0060] Please refer to the attached Figure 1 As shown, the injection mold of the present application also includes a second air supply component 800, which includes an air supply pump 410, an input pipeline 420 and a return pipeline 430. The air supply pump 410 is a gas generating device. The input pipeline 420 is used to input the cooling gas generated by the air supply pump 410 into the cooling channel of the upper mold 100. The return pipeline 430 is used to output the cooled cooling gas from the cooling channel of the upper mold 100. The input pipeline, the cooling channel 230 and the return pipeline 430 together form a cooling circuit for the cooling gas. By continuously inputting and outputting the cooling gas in the cooling channel 230, the cooling of the upper mold 100 is achieved. The air supply pump 410 is connected to the cooling channel 230 of the upper mold 100 through the input pipeline 420, and the return pipeline 430 is connected to the cooling channel 230 of the upper mold 100.

[0061] In one embodiment, the gas generated by the gas supply pump 410 is air or nitrogen.

[0062] Please refer to the attached Figure 1 As shown, the injection mold of the present application further includes an upper shell 700, which is located at the bottom of the upper mold 100 and connected to the upper mold 100. A second accommodating space 710 is formed in the upper shell 700, and the second air supply assembly 800 is located in the second accommodating space 710.

[0063] Please refer to the attached Figure 1 As shown, the present application further includes a fixing member 900, which includes a fixing ring and a fixing rod. The fixing ring is sleeved outside the input pipeline 420, the return pipeline 430 and the demolding pipeline assembly 600, and is interference fit with the input pipeline 420, the return pipeline 430 and the demolding pipeline assembly 600. One end of the fixing rod is fixedly connected to the fixing ring, and the other end of the fixing rod is fixedly connected to the upper shell 700 or the lower shell 300, so as to realize the fixed connection of the input pipeline 420, the return pipeline 430 and the demolding pipeline assembly 600.

[0064] Attached Figure 2 This is a schematic diagram of the structure of the upper mold 100 or the lower mold 200 of the present application. Figure 2 As shown, a cooling channel 230 is provided in the upper mold 100 or the lower mold 200 of the present application, and the cooling channel 230 is arranged in a fold line in the upper mold 100 or the lower mold 200 to increase the length of the cooling channel 230 in the upper mold 100 or the lower mold 200.

[0065] In one embodiment, the first end of the cooling channel 230 is connected to the input pipeline 420, and the second end of the cooling channel 230 is connected to the return pipeline 430 to ensure that the running route length of the cooling gas in the cooling channel 230 is maximized, further improving the cooling efficiency of the cooling gas.

[0066] Attached Figure 3 This application is attached Figure 1 A partial enlarged view of A. Please refer to the attached Figure 3 As shown, the demolding cavity 220 of the present application includes a first cavity 221, a second cavity 222 and a third cavity 223 arranged one after another along a first direction Y, the second cavity 222 is connected to the first cavity 221 and the third cavity 223 respectively, the first cavity 221 is connected to the injection cavity, the third cavity 223 is connected to the demolding pipeline assembly 600, and the cross-sectional area of ​​the second cavity 222 is smaller than the cross-sectional areas of the first cavity 221 and the third cavity 223.

[0067] In one embodiment, the cross sections of the first cavity 221 , the second cavity 222 , and the third cavity 223 are all circular structures.

[0068] Please refer to the attached Figure 3 As shown, the demolding assembly 500 includes a top plate 510, a connecting rod 520 and a supporting plate 530 which are sequentially arranged along a first direction Y, the connecting rod 520 is connected to the top plate 510 and the supporting plate 530 respectively, the top plate 510 is located in the first cavity 221 or the injection molding cavity, the connecting rod 520 is located in the second cavity 222 and extends to the third cavity 223, the supporting plate 530 is located in the third cavity 223, and the supporting plate 530 is arranged along the second direction X.

[0069] In one embodiment, the thickness of the top plate 510 is consistent with the depth of the first cavity 221. When the top plate 510 is in the first cavity 221, the upper surface of the top plate 510 is coplanar with the bottom surface of the injection cavity 210, thereby ensuring that the impact on the injection morphology during injection molding is reduced.

[0070] In one embodiment, the cross-sections of the connecting rod 520 , the top plate 510 , and the supporting plate 530 are all circular.

[0071] Please refer to the attached Figure 3As shown, the demolding assembly 500 also includes an elastic member 540, which is located in the third cavity 223, the elastic member 540 is located in the third cavity 223, the first end of the elastic member 540 is against the top of the third cavity 223, the second end of the elastic member 540 is against the support plate 530, and the elastic member 540 is sleeved outside the connecting rod 520.

[0072] Please refer to the attached Figure 1 To Attachment Figure 3 As shown, the specific working process of the injection mold of the present application is as follows: the air supply pump 410 generates cooling gas and inputs it into the cooling channel 230 through the input pipeline 420. The cooling gas flows in the cooling channel 230 and then outputs the cooling channel 230 through the main return pipe 431. The reversing valve 630 can adjust whether the main return pipe 431 is connected to the output pipe 432 or the main air supply pipe 610. When the reversing valve 630 is switched to the main return pipe 431 connected to the output pipe 432, the cooling gas is directly discharged to the outside. When the reversing valve 630 is switched to the main return pipe 431 connected to the output pipe 432, the cooling gas is directly discharged to the outside. When the secondary gas pipe 620 is connected to the main gas pipe 610, the cooling gas is input into the main gas pipe 610, and then input into the demolding cavity 220 through the secondary gas pipe 620. After the cooling gas is input into the demolding cavity 220, the cooling gas acts on the supporting plate 530 and drives the demolding assembly 500 to move upward. At the same time, the top plate 510 leaves the first cavity, and the injection molded part is demolded. The user clamps the injection molded part into the finished product box through the robot arm. When the reversing valve 630 is switched to connect the main return pipe 431 with the output pipe 432 again, the top plate 510 falls back into the first cavity at the same time.

[0073] In the present application, the demoulding of the injection molded parts uses the cooling gas after cooling the injection mold, rather than the gas directly output from the air supply pump 410. Therefore, there is no situation where the air supply pump 410 is pressure-divided to the input pipeline 420 and the demolding pipeline assembly 600. Therefore, the cooling gas pressure in the cooling channel 230 can be kept constant, and the cooling temperature of the injection mold can be further kept constant.

[0074] In the present application, the cooling temperature depends on the temperature of the cooling gas, the ambient temperature and the cooling gas pressure. When the cooling gas temperature and the ambient temperature are kept consistent, the cold zone gas pressure input into the cooling channel 230 of the present application is also kept consistent, and the cooling temperature of the injection mold is constant. Further, the cooling gas pressure input into the cooling channel 230 by the air supply pump 410 through the input pipeline 420 of the present application is set to be constant.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An injection mold, characterized in that: The injection mold comprises: upper mold; A lower mold, wherein an injection cavity extending downward from an upper surface of the lower mold to an interior thereof is formed in the lower mold, a demolding cavity extending downward from a bottom of the injection cavity is formed in the lower mold, and a cooling channel is formed in the lower mold, and cooling gas flows in the cooling channel to cool the lower mold; A first air supply component, the first air supply component comprising an air supply pump, an input pipeline and a return pipeline, the air supply pump is connected to the cooling channel of the lower mold through the input pipeline, and the return pipeline is connected to the cooling channel of the lower mold; A demoulding component, wherein the demoulding component is located in the demoulding cavity; The demoulding pipeline assembly is connected to the return pipeline and the demoulding cavity respectively to realize the up and down movement of the demoulding assembly in the demoulding cavity.

2. The injection mold according to claim 1, characterized in that: A plurality of injection cavities are formed in the lower mold, and the demoulding components are arranged in each of the injection cavities.

3. The injection mold according to claim 2, characterized in that: The return pipeline includes a main return pipe and an output pipe, and the demolding pipeline assembly includes a main air supply pipe and a secondary air supply pipe. The first end of the main return pipe is connected to the cooling channel, and the second end of the main return pipe is connected to the output pipe and the main air supply pipe respectively through a reversing valve. Each of the injection molding cavities is connected to the main air supply pipe through the secondary air supply pipe.

4. The injection mold according to claim 1, characterized in that: The first end of the cooling channel is connected to the input pipeline, and the second end of the cooling channel is connected to the return pipeline.

5. The injection mold according to claim 1, characterized in that: The injection mold also includes: A lower shell body is provided with a first accommodating space therein, the lower shell body is connected to the bottom of the lower mold, and the first air supply assembly and the demoulding pipeline assembly are both located in the first accommodating space.

6. The injection mold according to claim 1, characterized in that: The demolding cavity includes a first cavity, a second cavity and a third cavity which are arranged in sequence along a first direction, the second cavity is connected to the first cavity and the third cavity respectively, the first cavity is connected to the injection cavity, the third cavity is connected to the demolding pipeline assembly, and the cross-sectional area of ​​the second cavity is smaller than the cross-sectional area of ​​the first cavity and the third cavity.

7. The injection mold according to claim 6, characterized in that: The demolding assembly includes a top plate, a connecting rod and a supporting plate arranged in sequence along the first direction, the connecting rod is connected to the top plate and the supporting plate respectively, the top plate is located in the first cavity or the injection cavity, the connecting rod is located in the second cavity and extends to the third cavity, the supporting plate is located in the third cavity, and the supporting plate is arranged along the second direction.

8. The injection mold according to claim 7, characterized in that: The demoulding assembly also includes an elastic member, which is located in the third cavity, wherein the first end of the elastic member abuts against the top of the third cavity, the second end of the elastic member abuts against the supporting plate, and the elastic member is sleeved outside the connecting rod.

9. The injection mold according to claim 1, characterized in that: An injection protrusion extending downward from the lower surface of the upper mold is formed on the upper mold, and a cooling channel is formed in the upper mold. Cooling gas flows in the cooling channel to cool the upper mold.

10. The injection mold according to claim 9, characterized in that: It also includes a second air supply component, which includes an air supply pump, an input pipeline and a return pipeline. The air supply pump is connected to the cooling channel of the upper mold through the input pipeline, and the return pipeline is connected to the cooling channel of the upper mold.

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