Injection mold and injection molding apparatus

Abstract

The application provides an injection mold and an injection equipment. The injection mold comprises a first mold part, a second mold part and a gas storage part. The first mold part has a first mold cavity and a first runner. The second end of the first runner is communicated with the first mold cavity, and the first end of the first runner is used for injecting injection plastic. The second mold part has a second mold cavity. The first mold part and the second mold part are detachably connected, so that the first mold cavity and the second mold cavity are spliced into a forming cavity. The vent of the gas storage part is communicated with the cavity bottom wall of the second mold cavity, so that the gas storage part receives the gas extruded in the forming cavity when the injection plastic is injected into the forming cavity. When the forming part in the forming cavity is demolded, the gas in the gas storage part is discharged to the forming cavity, so that the gas discharged to the forming cavity generates an acting force on the forming part from the direction of the second mold part to the first mold part, and then the forming part is separated from the second mold part, thereby solving the problem that the demolding of the injection mold in the prior art is relatively inconvenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, in particular to an injection mold and an injection equipment. BACKGROUND

[0002] The injection mold is a tool for producing plastic products, with the popularization of hot runner high-precision mold, the complete structure and accurate size requirements of plastic products are improved.

[0003] The injection mold is composed of an upper mold and a lower mold, during injection molding, the upper mold and the lower mold are closed to form a gating system and a cavity, and when the mold is opened, the upper mold and the lower mold are separated to take out the plastic product.

[0004] The traditional mold structure only uses an ejection mechanism for ejection demolding, which has the problem of inconvenient demolding. SUMMARY

[0005] The main purpose of the present application is to provide an injection mold and an injection equipment to solve the problem of inconvenient demolding of the injection mold in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an injection mold is provided, which comprises: a first mold part, the first mold part having a first mold cavity and a first runner; a second end of the first runner being in communication with the first mold cavity, a first end of the first runner being used for injecting injection plastic; a second mold part, the second mold part having a second mold cavity; the first mold part and the second mold part being detachably connected to make the first mold cavity and the second mold cavity spliced into a molding cavity; along the distribution direction of the first mold part and the second mold part, the second mold cavity has a cavity bottom wall facing the first mold part; a gas storage component, a gas inlet of the gas storage component being in communication with the cavity bottom wall of the second mold cavity, so that when injecting plastic into the molding cavity, the gas storage component receives the gas squeezed out of the molding cavity; when the molded part in the molding cavity is demolded, the gas storage component discharges the gas in its interior to the molding cavity, so that the gas discharged into the molding cavity generates an acting force on the molded part in the direction from the second mold part to the first mold part, and then the molded part falls off from the second mold part.

[0007] Further, the second mold part has a preset channel and a containing chamber, and the gas storage component is arranged in the containing chamber; a first end of the preset channel is in communication with the cavity bottom wall of the second mold cavity, and a second end of the preset channel is in communication with the gas inlet of the gas storage component.

[0008] Further, the preset channel comprises a first channel part and a second channel part, the first channel part and the second channel part are distributed along a direction perpendicular to the extension direction of the preset channel; wherein the two ends of the first channel part are respectively communicated with the cavity bottom wall of the second mold cavity and the air vent of the gas storage component, so that the second mold cavity and the air vent of the gas storage component are communicated through the first channel part; the heat conducting member is arranged in the second channel part, so that when the glue is injected into the forming cavity, the heat in the second mold cavity is transmitted to the gas storage component through the heat conducting member, and then the gas storage component is heated and expanded; after the glue injection into the forming cavity is completed, the heat of the gas storage component and the gas inside the gas storage component is conducted out through the heat conducting member, and when the temperature of the gas storage component decreases to a preset temperature, the gas storage component shrinks to discharge the gas inside the gas storage component.

[0009] Further, the two ends of the preset channel are provided with air permeable members, so that the gas can pass through the air permeable members; and / or the heat conducting member is a non-volatile ionic liquid; and / or the second channel part is arranged around the first channel part; and / or the second mold part further has a connecting channel, the first end of the connecting channel is in butt joint communication with the second end of the preset channel, and the second end of the connecting channel is in butt joint communication with the air vent of the gas storage component; and / or the gas storage component is a gas bag.

[0010] Further, one of the first mold part and the second mold part is provided with a positioning hole, and the other is provided with a positioning part; the injection mold further comprises: a first elastic member, the extension direction of the first elastic member is parallel to or the same as the distribution direction of the first mold part and the second mold part; the first elastic member has a first end and a second end oppositely arranged along the extension direction thereof; the second end of the first elastic member is fixedly arranged with the hole wall of the positioning hole, and the first end of the first elastic member is located on the side of the second end thereof facing the positioning part; wherein when the glue is injected into the forming cavity, the temperature of the first elastic member rises and reaches a set temperature, so that the first elastic member is in a contracted state, and then the positioning part is arranged in the positioning hole; after the glue injection into the forming cavity is completed, as the temperature of the first elastic member decreases and is lower than the set temperature, the contracted first elastic member starts to stretch, so as to generate an action force away from the second mold part on the first mold part under the elastic action force of the first elastic member.

[0011] Further, the first elastic member is a memory spring; and / or the positioning part is a rod-shaped structure arranged along the distribution direction of the first mold part and the second mold part; and / or the positioning structure comprises the positioning hole, the positioning part and the first elastic member, the positioning structure is a plurality of, the plurality of positioning structures are distributed at intervals around the first axis, the extension direction of the first axis is parallel to or the same as the distribution direction of the first mold part and the second mold part; and / or the first end of the first elastic member is provided with a positioning block, when the positioning part is arranged in the positioning hole, the positioning part abuts against the positioning block.

[0012] Further, one of the first mold part and the second mold part is provided with a limiting member, and the other is provided with a limiting hole, the limiting member is arranged to pass through the limiting hole; and / or the injection mold further comprises a sealing gasket, the sealing gasket is arranged on the surface of the second mold part facing the first mold part or the surface of the first mold part facing the second mold part, and at least part of the sealing gasket is made of flexible material.

[0013] Further, the injection mold further comprises: an assembly component arranged on the first mold part; the assembly component has a second runner and a third runner; a first end of the second runner is used for injecting the injection plastic; a second end of the second runner is connected to a first end of the third runner in a communication mode; an opening cross section of the second end of the second runner is smaller than an opening cross section of the first end of the third runner; a second end of the third runner is connected to the first end of the first runner in a communication mode; and a shielding part is movably arranged in the third runner to shield at least part of the second port of the second runner, or to move away from the second port of the second runner to give way to the second port of the second runner, thereby adjusting the flow capacity of the second port of the second runner.

[0014] Further, the third runner has a first side wall and a second side wall arranged oppositely along a preset direction, the preset direction is perpendicular to the distribution direction of the second runner and the third runner; the shielding part is movably arranged along the preset direction to shield at least part of the second port of the second runner, or to move away from the second port of the second runner; the injection mold further comprises: a second elastic member, a stretching direction of the second elastic member is parallel to or the same as the preset direction; the second elastic member has a first end and a second end arranged oppositely along the stretching direction thereof; the first end of the second elastic member is connected to the first side wall of the third runner, and the second end of the second elastic member is connected to the shielding part; and / or a third elastic member, a stretching direction of the third elastic member is parallel to or the same as the preset direction; the third elastic member has a first end and a second end arranged oppositely along the stretching direction thereof; the first end of the third elastic member is connected to the shielding part, and the second end of the third elastic member is connected to the second side wall of the third runner.

[0015] Further, a step structure is formed between the side wall of the second runner and the side wall of the third runner, a surface of the shielding part facing the second runner is in contact with a step surface of the step structure, and the shielding part is slidably arranged along the step surface of the step structure.

[0016] Further, the assembly component has an adjusting groove; along a direction perpendicular to the preset direction, the adjusting groove is located on one side of the third runner; the adjusting groove is a strip-shaped groove arranged in extension along a direction parallel to the preset direction; the injection mold further comprises: an adjusting member, the adjusting member is slidably arranged along the extension direction of the adjusting groove; the adjusting member and the shielding part are both magnetic members, so that the adjusting member and the shielding part have magnetic attraction force, thereby driving the shielding part to move along the preset direction when the adjusting member slides along the extension direction of the adjusting groove.

[0017] According to another aspect of the present application, there is provided an injection molding device comprising the injection mold as described above.

[0018] According to the technical solution of the present application, the injection mold comprises a first mold part, a second mold part and a gas storage part. The first mold part has a first mold cavity and a first runner. The two ends of the first runner are a first end and a second end respectively. The second end of the first runner is in communication with the first mold cavity, and the first end of the first runner is used for injecting injection molding glue.

[0019] The second mold part has a second mold cavity. The first mold part and the second mold part are detachably connected. When the first mold part and the second mold part are connected, the first mold part and the second mold part are relatively fixed, and the first mold cavity and the second mold cavity are spliced to form a molding cavity. At this time, the injection molding glue can be injected into the molding cavity through the first runner, so that the injection molding glue injected into the molding cavity forms an injection molding part in the molding cavity. Along the distribution direction of the first mold part and the second mold part, the second mold cavity has a cavity bottom wall facing the first mold part.

[0020] The gas storage part has a gas inlet. The gas inlet of the gas storage part is in communication with the cavity bottom wall of the second mold cavity. When the glue is injected into the molding cavity, the injection molding glue injected into the molding cavity will extrude the gas in the molding cavity, so that the gas extruded from the molding cavity enters the gas storage part, that is, the gas storage part receives the gas extruded from the molding cavity. At this time, the gas inlet of the gas storage part is its gas outlet.

[0021] When the molding part in the molding cavity is demolded, the gas storage part can discharge the gas in its interior to the molding cavity. At this time, the gas inlet of the gas storage part is its gas outlet. The gas discharged to the molding cavity will generate an action force on the molding part in the molding cavity in the direction from the second mold part to the first mold part. This action force helps the molding part to fall off from the second mold part, and further makes the demolding of the molding part more convenient, thereby solving the problem that the demolding of the injection mold in the prior art is relatively inconvenient. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the present application, explain the present application. The present application is shown by the schematic embodiments of the present application and their descriptions, and does not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A structural schematic diagram of the injection mold according to the present application is shown;

[0024] Figure 2 A structural schematic diagram of the first mold part and the second mold part of the injection mold according to the present application is shown;

[0025] Figure 3 A structural schematic diagram of the first mold part and the second mold part of the injection mold according to the present application is shown; Figure 1An enlarged view of point A in the injection mold;

[0026] Figure 4 It shows Figure 2 Enlarged view of point B in the injection mold;

[0027] Figure 5 It shows Figure 2 Enlarged view of the preset channels and connecting channels of the injection mold;

[0028] Figure 6 A schematic diagram of the structure of the first mold part and assembly components of the injection mold according to the present invention is shown;

[0029] Figure 7 A schematic diagram of the structure of the second mold part of the injection mold according to the present invention is shown;

[0030] Figure 8 A schematic diagram of the second and third runners of the assembly components of the injection mold according to the present invention is shown.

[0031] The above figures include the following reference numerals:

[0032] 10. First mold part; 11. First mold cavity; 111. Bottom wall of second cavity; 12. First runner; 13. Positioning part; 14. Limiting hole;

[0033] 20. Second mold section; 21. Second mold cavity; 211. Bottom wall of the first cavity; 22. Pre-set channel; 221. First channel section; 222. Second channel section; 223. Heat-conducting component; 224. Ventilation component; 225. Air duct; 23. Receiving chamber; 24. Connecting channel; 241. First channel section; 242. Second channel section; 25. Positioning hole; 26. Limiting component; 27. Sealing gasket; 271. Connecting hole;

[0034] 30. Molding cavity; 40. Gas storage component; 50. First elastic element; 51. Positioning block;

[0035] 60. Assembly component; 601. First assembly section; 602. Second assembly section; 61. Second runner; 611. First runner section; 612. Second runner section; 613. Third runner section; 62. Third runner; 63. Step structure; 631. Step surface; 64. Adjustment groove; 641. Limiting part;

[0036] 70. Blocking part; 71. Second elastic element; 72. Third elastic element; 80. Adjusting element; 81. Operating element. Detailed Implementation

[0037] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0039] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0040] The present application provides an injection mold, please refer to Figures 1 to 8 The injection mold comprises a first mold part 10, a second mold part 20 and a gas storage component 40; the first mold part 10 has a first mold cavity 11 and a first runner 12; the two ends of the first runner 12 are a first end and a second end, respectively; the second end of the first runner 12 communicates with the first mold cavity 11, and the first end of the first runner 12 is used for injecting injection plastic.

[0041] The second mold part 20 has a second mold cavity 21. The first mold part 10 and the second mold part 20 are detachably connected; when the first mold part 10 and the second mold part 20 are connected, the first mold part 10 and the second mold part 20 are relatively fixed, and the first mold cavity 11 and the second mold cavity 21 are spliced to form a forming cavity 30, at this time the first runner 12 can be used to inject injection plastic into the forming cavity 30, so that the injection plastic injected into the forming cavity 30 forms an injection molded part in the forming cavity 30. Along the distribution direction of the first mold part 10 and the second mold part 20, the second mold cavity 21 has a cavity bottom wall facing the first mold part 10; Figure 2 The first cavity bottom wall 211 in the first cavity bottom wall 211 is the cavity bottom wall of the second mold cavity 21.

[0042] The gas storage component 40 has a gas inlet; the gas inlet of the gas storage component 40 communicates with the cavity bottom wall of the second mold cavity 21. When injecting glue into the forming cavity 30, the injection plastic injected into the forming cavity 30 will extrude the gas in the forming cavity 30, so that the gas is extruded and discharged from the forming cavity 30, and the extruded and discharged gas from the forming cavity 30 enters the gas storage component 40, that is, the gas storage component 40 receives the extruded and discharged gas from the forming cavity 30, at this time the gas inlet of the gas storage component 40 is its gas inlet.

[0043] When the molded part in the molding cavity 30 is demolded, the gas storage component 40 can discharge the gas in its interior to the molding cavity 30, at this time the air passage of the gas storage component 40 is its gas outlet; the gas discharged to the molding cavity 30 can generate an action force on the molded part in the molding cavity 30 from the direction of the second mold part 20 to the first mold part 10, which helps to make the molded part fall off from the second mold part 20, and further makes the demolding of the molded part more convenient, solving the problem that the demolding of the injection mold in the prior art is relatively inconvenient.

[0044] In the embodiment, the second mold part 20 has a preset channel 22 and a containing cavity 23, and the gas storage component 40 is arranged in the containing cavity 23; the two ends of the preset channel 22 are respectively a first end and a second end; the first end of the preset channel 22 is in communication with the cavity bottom wall of the second mold cavity 21, and the second end of the preset channel 22 is in communication with the air passage of the gas storage component 40.

[0045] In the embodiment, the preset channel 22 includes a first channel part 221 and a second channel part 222, and the first channel part 221 and the second channel part 222 are distributed along a direction perpendicular to the extension direction of the preset channel 22.

[0046] The two ends of the first channel part 221 are respectively in communication with the cavity bottom wall of the second mold cavity 21 and the air passage of the gas storage component 40, so as to make the second mold cavity 21 and the air passage of the gas storage component 40 communicate through the first channel part 221. That is, when the glue is injected into the molding cavity 30, the gas squeezed out in the molding cavity 30 flows to the gas storage component 40 through the first channel part 221; when the molded part in the molding cavity 30 is demolded, the gas storage component 40 discharges the gas in its interior to the molding cavity 30 through the first channel part 221.

[0047] The second channel part 222 is provided with a heat conduction member 223; when the glue is injected into the molding cavity 30, the injected injection glue is in a high-temperature state, and the heat in the second mold cavity 21 is transmitted to the gas storage component 40 through the heat conduction member 223, so as to make the gas storage component 40 expand by heat; since the gas entering the gas storage component 40 also generates an expansion force on the gas storage component 40, the gas storage component 40 expands under the double action forces of the expansion force of the gas entering its interior and the expansion by heat, so as to ensure that the gas storage component 40 can completely receive the gas discharged from the molding cavity 30. After the injection of the glue into the molding cavity 30 is completed, the heat of the gas storage component 40 and the gas in its interior is conducted out through the heat conduction member 223.

[0048] It should be noted that when the gas storage component 40 expands by heat, a pressure difference is also formed between the molding cavity 30 and the interior of the gas storage component 40, and under the action of the air pressure of the pressure difference, the gas in the molding cavity 30 also flows into the gas storage component 40, so as to actively realize the exhaust action on the molding cavity 30.

[0049] Specifically, when the injection into the molding cavity 30 is completed, the injection in the molding cavity 30 needs to be cooled to be shaped; in the process of cooling and shaping the injection in the molding cavity 30, the heat of the gas storage component 40 and the gas inside it is transmitted to the second mold part 20 and the molding cavity 30 through the heat conducting piece 223; when the temperature of the gas storage component 40 drops to the preset temperature, the gas storage component 40 will shrink to discharge the gas inside it to the second mold cavity 21 through the first channel part 221 as the gas storage component 40 continues to cool; wherein, in the process of cooling and shaping the injection in the molding cavity 30, the cooling effect of the injection in the molding cavity 30 is greater than that of the gas storage component 40 and the gas inside it, so the temperature of the injection in the molding cavity 30 must be lower than or equal to the temperature of the gas storage component 40 and the gas inside it, and then when the temperature of the gas storage component 40 drops to the preset temperature, the temperature of the injection in the molding cavity 30 must be lower than or equal to the preset temperature, at this time the injection in the molding cavity 30 must have been shaped and the shaped part has been cooled to the extent that it can be demolded.

[0050] Specifically, the molding cavity 30 and the containing chamber 23 are both sealed from the outside world to avoid interference caused by outside air.

[0051] In this embodiment, the preset channel 22 is provided with a gas permeable piece 224 at both ends, so that the gas can pass through the gas permeable piece 224.

[0052] Specifically, the gas squeezed out of the molding cavity 30 enters the first channel part 221 through the gas permeable piece 224 at the first end of the preset channel 22, and then flows into the gas storage component 40 after passing through the gas permeable piece 224 at the second end of the preset channel 22; or the gas in the gas storage component 40 enters the first channel part 221 through the gas permeable piece 224 at the second end of the preset channel 22, and then flows into the second mold cavity 21 after passing through the gas permeable piece 224 at the first end of the preset channel 22.

[0053] Specifically, the heat conducting piece 223 is an ionic liquid; the ionic liquid is arranged between the two gas permeable pieces 224 to avoid flowing to other places under the interception of the two gas permeable pieces 224.

[0054] Specifically, the heat conducting piece 223 is a non-volatile ionic liquid, that is, the ionic liquid has the characteristic of non-volatility. Further, the ionic liquid has high heat absorption.

[0055] Specifically, the gas permeable piece 224 is a gas permeable film.

[0056] Specifically, the two gas permeable pieces 224 are fixedly connected with the two ends of the preset channel 22 respectively.

[0057] Specifically, the second channel portion 222 is arranged around the first channel portion 221; optionally, the second channel portion 222 is an annular channel arranged around the first channel portion 221, and the extending direction of the central axis of the annular channel is the same as the extending direction of the preset channel 22.

[0058] Specifically, the preset channel 22 is provided with a gas guide pipe 225, and a lumen of the gas guide pipe 225 forms the first channel portion 221; and an annular cavity between an outer peripheral wall of the gas guide pipe 225 and a channel wall of the preset channel 22 forms the second channel portion 222.

[0059] Specifically, the gas guide pipe 225 is arranged between the two air permeable members 224, and two ends of the gas guide pipe 225 are fixedly connected with the two air permeable members 224 respectively.

[0060] Specifically, the second mold portion 20 further has a connecting channel 24, a first end of the connecting channel 24 is in abutment and communication with a second end of the preset channel 22, and a second end of the connecting channel 24 is in abutment and communication with a vent of the gas storage member 40.

[0061] Specifically, the first end of the preset channel 22 is located on a cavity bottom wall of the second mold cavity 21, so that the first end of the preset channel 22 is in direct communication with the cavity bottom wall of the second mold cavity 21.

[0062] Specifically, the gas storage member 40 is made of a thermal expansion material.

[0063] Specifically, the gas storage member 40 is a gas bag.

[0064] Optionally, the connecting channel 24 comprises a first channel segment 241 and a second channel segment 242 in communication with each other, an end of the first channel segment 241 away from the second channel segment 242 is in abutment and communication with the second end of the preset channel 22, and an end of the second channel segment 242 away from the first channel segment 241 is in abutment and communication with the vent of the gas storage member 40.

[0065] Further, the extending direction of the first channel segment 241 is the same as the extending direction of the preset channel 22; and the extending direction of the second channel segment 242 is perpendicular to the extending direction of the first channel segment 241.

[0066] Optionally, the extending direction of the preset channel 22 is parallel to or the same as the distribution direction of the first mold portion 10 and the second mold portion 20.

[0067] In the implementation process, the first mold portion 10 and the second mold portion 20 are distributed along a horizontal direction or a vertical direction.

[0068] In the embodiment, one of the first mold portion 10 and the second mold portion 20 is provided with a positioning hole 25, and the other is provided with a positioning portion 13; at least part of the positioning portion 13 is arranged to pass through the positioning hole 25.

[0069] The injection mold further comprises a first elastic member 50, a direction of expansion of the first elastic member 50 is parallel to or same as the distribution direction of the first mold part 10 and the second mold part 20; the first elastic member 50 has a first end and a second end oppositely arranged along the direction of expansion; the second end of the first elastic member 50 is fixedly arranged opposite to the hole wall of the positioning hole 25, and the first end of the first elastic member 50 is located on the side of the second end of the first elastic member 50 which is toward the positioning part 13. When injecting glue into the forming cavity 30, the first elastic member 50 will be heated, so that the temperature of the first elastic member 50 rises and reaches a set temperature, that is, the temperature of the first elastic member 50 during the injection process is greater than or equal to the set temperature, at this time, the first elastic member 50 is in a contracted state, so that the positioning part 13 is arranged in the positioning hole 25.

[0070] Taking the example that the second mold part 20 is provided with the positioning hole 25 and the first mold part 10 is fixedly provided with the positioning part 13: the first end of the first elastic member 50 is located on the side of the second end of the first elastic member 50 which is toward the first mold part 10. In the specific implementation process, the second mold part 20 is fixedly arranged, and the pushing part is arranged on the side of the first mold part 10 which is away from the second mold part 20; before injecting glue, the pushing part pushes the first mold part 10 to move toward the second mold part 20, so that the positioning part 13 is arranged in the positioning hole 25, and the first mold part 10 and the second mold part 20 are tightly attached to each other, so that the first mold cavity 11 and the second mold cavity 21 are spliced into a sealed forming cavity 30, at this time, the first elastic member 50 is compressed; by arranging the positioning part 13 in the positioning hole 25, not only the first mold part 10 and the second mold part 20 are relatively fixed and cannot relatively displace in the direction perpendicular to the distribution direction of the first mold part 10 and the second mold part 20, but also the first mold part 10 and the second mold part 20 are tightly attached to each other, so that the first mold cavity 11 and the second mold cavity 21 can be spliced into a sealed forming cavity 30; after the injection of glue starts, the temperature of the first elastic member 50 is heated and rises, so that the compressed first elastic member 50 remains in a contracted state.

[0071] After the injection of glue into the forming cavity 30 is completed, the pushing part is removed first, so that the pushing part is away from the first mold part 10; as the temperature of the first elastic member 50 decreases, when the temperature of the first elastic member 50 is lower than the set temperature, the contracted first elastic member 50 starts to expand, so that under the elastic force of the first elastic member 50, the first mold part 10 generates a force away from the second mold part 20, which is conducive to the separation of the first mold part 10 from the molded part, that is, conducive to the realization of the molded part falling off from the first mold part 10.

[0072] It should be noted that, in the demolding process, if the gas discharged from the inside of the gas storage component 40 to the molding cavity 30 can cause the molded part to fall off the second mold part 20, then the ejection force of the ejector pin is not needed; if the gas discharged from the inside of the gas storage component 40 to the molding cavity 30 can only loosen or partially fall off the molded part from the second mold part 20, i.e., cannot completely fall off the molded part from the second mold part 20, then the ejection force of the ejector pin is still needed to cause the molded part to fall off the second mold part 20, and the force of the gas discharged from the inside of the gas storage component 40 to the molding cavity 30 on the molded part is the demolding auxiliary force.

[0073] It should be noted that, in the demolding process, if the elastic force of the first elastic member 50 can cause the molded part to fall off the first mold part 10, then the ejection force of the ejector pin is not needed; if the elastic force of the first elastic member 50 can only loosen or partially fall off the molded part from the first mold part 10, i.e., cannot completely fall off the molded part from the first mold part 10, then the ejection force of the ejector pin is still needed to cause the molded part to fall off the first mold part 10, and the elastic force of the first elastic member 50 is the demolding auxiliary force.

[0074] Specifically, the demolding steps are as follows: 1. The first mold part 10 is moved away from the molded part by the ejector pin, so that the first mold part 10 completely separates from the molded part; if the elastic force of the first elastic member 50 can cause the molded part to fall off the first mold part 10, then this step 1 is omitted; 2. The first mold part 10 is moved to completely separate from the molded part and the second mold part 20, to make room for the separation of the molded part and the second mold part 20 and / or the removal of the molded part; 3. The molded part is moved away from the second mold part 20 by the ejector pin, so that the molded part completely falls off the second mold part 20; if the gas discharged from the inside of the gas storage component 40 to the molding cavity 30 can cause the molded part to fall off the second mold part 20, then this step 3 is omitted; 4. The molded part is removed from the second mold part 20.

[0075] Specifically, the first elastic member 50 is a memory spring.

[0076] Specifically, the positioning part 13 is a rod-shaped structure extending along the distribution direction of the first mold part 10 and the second mold part 20.

[0077] Specifically, the first end of the first elastic member 50 is provided with a positioning block 51, and when the positioning part 13 is arranged in the positioning hole 25, the positioning part 13 abuts against the positioning block 51.

[0078] Specifically, the positioning hole 25 is a blind hole, and the second end of the first elastic member 50 abuts against or connects with the hole bottom wall of the positioning hole 25.

[0079] Specifically, the temperature is set to a range of 65 to 85 degrees.

[0080] Optionally, the length of the first elastic member 50 in the free state is 200 mm, and the minimum length of the first elastic member 50 in the contracted state is 100 mm. The first elastic member 50 is in the free state at room temperature.

[0081] Optionally, when the first elastic member 50 is in the free state, the first elastic member 50 is located entirely in the positioning hole 25, and at least part of the positioning block 51 is located outside the positioning hole 25.

[0082] In the embodiment, the positioning structure includes the positioning hole 25, the positioning portion 13, the first elastic member 50, and the positioning block 51. There are multiple positioning structures, and the multiple positioning structures are distributed at intervals around the first axis, and the extension direction of the first axis is parallel or identical to the distribution direction of the first mold portion 10 and the second mold portion 20.

[0083] Specifically, the multiple positioning holes 25 are distributed at intervals along the circumference of the second mold portion 20, and the multiple positioning portions 13 are distributed at intervals along the circumference of the first mold portion 10.

[0084] Optionally, the second mold portion 20 is a rectangular or approximately rectangular structure, and the first mold portion 10 is a rectangular or approximately rectangular structure. There are four positioning structures, and the four positioning structures are respectively arranged at the four corners of the second mold portion 20 and the first mold portion 10.

[0085] In the embodiment, one of the first mold portion 10 and the second mold portion 20 is provided with a limiting piece 26, and the other is provided with a limiting hole 14. The limiting piece 26 is arranged to be inserted into the limiting hole 14, so as to be positioned in the direction perpendicular to the distribution direction of the first mold portion 10 and the second mold portion 20 when the first mold portion 10 and the second mold portion 20 are close to each other for lamination. After the first mold portion 10 and the second mold portion 20 are laminated, the first mold portion 10 and the second mold portion 20 are relatively fixed in the direction perpendicular to the distribution direction of the first mold portion 10 and the second mold portion 20 and cannot relatively displace.

[0086] It should be noted that when the first mold portion 10 and the second mold portion 20 are close to each other for lamination, the positioning portion 13 and the positioning hole 25 can also be used to position in the direction perpendicular to the distribution direction of the first mold portion 10 and the second mold portion 20.

[0087] In the implementation process, when the first mold portion 10 and the second mold portion 20 are laminated, the limiting piece 26 is inserted into the limiting hole 14, and the positioning portion 13 is also inserted into the positioning hole 25, so as to ensure and enhance the tightness of the lamination of the first mold portion 10 and the second mold portion 20.

[0088] Optionally, the limiting member 26 is arranged on the second mold part 20, and the limiting hole 14 is arranged on the first mold part 10.

[0089] Optionally, the limiting member 26 is a rod-shaped structure arranged along the distribution direction of the first mold part 10 and the second mold part 20. Further, the cross section of the limiting member 26 perpendicular to the extension direction thereof is greater than the cross section of the positioning part 13 perpendicular to the extension direction thereof.

[0090] Optionally, the limiting member 26 and the limiting hole 14 are both multiple, the multiple limiting members 26 are correspondingly arranged in the multiple limiting holes 14; the multiple limiting members 26 are distributed along the circumference of the second mold part 20 or the first mold part 10, and the multiple limiting holes 14 are distributed along the circumference of the first mold part 10 or the second mold part 20.

[0091] In the embodiment, the injection mold further comprises a sealing gasket 27, at least part of the sealing gasket 27 is made of flexible material; the sealing gasket 27 is arranged on the surface of the second mold part 20 facing the first mold part 10, or the sealing gasket 27 is arranged on the surface of the first mold part 10 facing the second mold part 20, so as to ensure the sealing performance of the formed cavity 30 after splicing; that is, the sealing gasket 27 is used to seal the first mold part 10 and the second mold part 20 from each other, so as to improve the air tightness.

[0092] Specifically, when the sealing gasket 27 is arranged on the surface of the second mold part 20 facing the first mold part 10, and when the positioning hole 25 is arranged on the second mold part 20, the sealing gasket 27 is provided with a communication hole 271 communicating with the positioning hole 25, so that the positioning part 13 passes through the communication hole 271, that is, the positioning part 13 is arranged in the positioning hole 25 through the communication hole 271. Further, each positioning hole 25 on the second mold part 20 corresponds to one positioning hole 25 on the sealing gasket 27, and each positioning hole 25 on the second mold part 20 communicates with the corresponding positioning hole 25 on the sealing gasket 27.

[0093] Optionally, the sealing gasket 27 is made of polytetrafluoroethylene plastic material.

[0094] Optionally, the thickness of the sealing gasket 27 is 0.02mm.

[0095] In the embodiment, the injection mold further comprises an assembling part 60, which is arranged on the first mold part 10; the assembling part 60 has a second runner 61 and a third runner 62; a first end of the second runner 61 is used for injecting the injection plastic, so that the first end of the second runner 61 is a glue injection port; a second end of the second runner 61 is in communication with a first end of the third runner 62; an opening cross section of the second end of the second runner 61 is smaller than an opening cross section of the first end of the third runner 62; a second end of the third runner 62 is in communication with the first end of the first runner 12; that is, the injection plastic injected from the first end of the second runner 61 flows into the forming cavity 30 in sequence through the second runner 61, the third runner 62 and the first runner 12.

[0096] The injection mold further comprises a shielding part 70, which is movably arranged in the third runner 62, so that the shielding part 70 shields at least part of the second port of the second runner 61 or moves away from the second port of the second runner 61 to give way to the second port of the second runner 61. When the shielding part 70 moves away from the second port of the second runner 61 to give way to the second port of the second runner 61, the second port of the second runner 61 is in a completely open state, the second runner 61 and the third runner 62 are in communication, and at this time, the second port of the second runner 61 has a maximum flow capacity; when the shielding part 70 shields part of the second port of the second runner 61, the second port of the second runner 61 is in an incomplete open state, at this time, the second runner 61 and the third runner 62 are still in a communication state, but the flow capacity of the second port of the second runner 61 is smaller than the maximum flow capacity; and the flow capacity of the second port of the second runner 61 is adjusted by adjusting the shielding part of the shielding part 70 to the second port of the second runner 61; when the shielding part 70 completely shields the second port of the second runner 61, that is, the shielding part 70 completely blocks the second port of the second runner 61, the second port of the second runner 61 is in a closed state, at this time, the second runner 61 and the third runner 62 are disconnected, and the injection plastic injected from the first end of the second runner 61 will not flow into the forming cavity 30. It can be seen that by moving the shielding part 70, the flow capacity of the second port of the second runner 61 can be adjusted, and then the instantaneous flow and flow rate of the injection plastic flowing into the forming cavity 30 can be adjusted.

[0097] Optionally, the shielding part 70 is a block structure.

[0098] In the embodiment, the preset direction is perpendicular to the distribution direction of the second runner 61 and the third runner 62; the shielding part 70 is movably arranged along the preset direction, so that the shielding part 70 shields at least part of the second port of the second runner 61 or moves away from the second port of the second runner 61 to give way to the second port of the second runner 61.

[0099] The third runner 62 has a first side wall and a second side wall oppositely arranged along the preset direction, and the injection mold further comprises a second elastic member 71 and / or a third elastic member 72; the extension direction of the second elastic member 71 is parallel or identical to the preset direction; the second elastic member 71 has a first end and a second end oppositely arranged along the extension direction thereof; the first end of the second elastic member 71 is connected with the first side wall of the third runner 62, and the second end of the second elastic member 71 is connected with the shielding part 70; the third elastic member 72 has a first end and a second end oppositely arranged along the extension direction thereof; the first end of the third elastic member 72 is connected with the shielding part 70, and the second end of the third elastic member 72 is connected with the second side wall of the third runner 62; the second elastic member 71 and / or the third elastic member 72 are arranged to movably arrange the shielding part 70 along the preset direction.

[0100] Optionally, the second elastic member 71 is a spring, and the third elastic member 72 is a spring.

[0101] Specifically, since the second end of the second runner 61 is connected with the first end of the third runner 62, the second end face of the second runner 61 and the first end face of the third runner 62 are on the same plane; and since the opening cross section of the second end of the second runner 61 is smaller than the opening cross section of the first end of the third runner 62, a stepped structure 63 is formed between the side wall of the second runner 61 and the side wall of the third runner 62; the surface of the shielding part 70 facing the second runner 61 is in contact with the stepped face 631 of the stepped structure 63, and the shielding part 70 is slidably arranged along the stepped face 631 of the stepped structure 63, so as to ensure the shielding effect of the shielding part 70 on the second port of the second runner 61.

[0102] Optionally, the extension direction of the second runner 61 is parallel or identical to the distribution direction of the first mold part 10 and the second mold part 20, and the second runner 61 has a first end and a second end oppositely arranged along the extension direction thereof; the extension direction of the third runner 62 is parallel or identical to the distribution direction of the first mold part 10 and the second mold part 20, and the third runner 62 has a first end and a second end oppositely arranged along the extension direction thereof.

[0103] In the embodiment, the assembling part 60 has an adjusting groove 64; along a direction perpendicular to the preset direction, the adjusting groove 64 is located on one side of the third runner 62; the adjusting groove 64 is a strip-shaped groove extending along a direction parallel to the preset direction; the injection mold further comprises an adjusting member 80, which is slidably arranged along the extension direction of the adjusting groove 64; the adjusting member 80 and the shielding part 70 are both magnetic members, so that the adjusting member 80 and the shielding part 70 have magnetic attraction force, and when the adjusting member 80 slides along the extension direction of the adjusting groove 64, the shielding part 70 is driven to move along the preset direction.

[0104] Optionally, the adjusting member 80 is in a block structure.

[0105] Specifically, the side of the adjusting member 80 facing the shielding part 70 is attracted to the side of the shielding part 70 facing the adjusting member 80.

[0106] Specifically, the injection mold further comprises an operating member 81 fixedly arranged on the adjusting member 80, so as to drive the adjusting member 80 to slide along the extending direction of the adjusting groove 64 by operating the operating member 81, and then drive the shielding part 70 to move along the preset direction, so as to adjust the flow rate of the second port of the second runner 61.

[0107] Specifically, part of the operating member 81 extends out of the adjusting groove 64, so as to facilitate the operation of the operating member 81.

[0108] Optionally, the operating member 81 is in a rod structure.

[0109] Specifically, the movement stroke of the adjusting member 80 can be limited by making the adjusting member 80 abut against both ends of the adjusting groove 64, respectively.

[0110] In the embodiment, the second runner 61 comprises a first runner section 611, a second runner section 612 and a third runner section 613 arranged in sequence and connected in series, and the end of the third runner section 613 away from the second runner section 612 is the second end of the second runner 61; and the end of the first runner section 611 away from the second runner section 612 is the first end of the second runner 61.

[0111] Specifically, the extending direction of the first runner section 611, the extending direction of the second runner section 612 and the extending direction of the third runner section 613 are all the same as the extending direction of the second runner 61.

[0112] Specifically, the opening cross section of the end of the second runner section 612 facing the third runner section 613 is larger than the opening cross section of the end of the third runner section 613 facing the second runner section 612.

[0113] Specifically, the cross section of the first runner section 611 perpendicular to its extending direction gradually decreases from the end of the first runner section 611 away from the second runner section 612 to the end of the first runner section 611 facing the second runner section 612; that is, the first port of the second runner 61 is in an expanding structure.

[0114] In the embodiment, the assembling component 60 comprises a first assembling part 601 and a second assembling part 602 connected to each other and fixed relative to each other, the first runner section 611 and the second runner section 612 are arranged on the first assembling part 601, the third runner section 613 and the third runner 62 are arranged on the second assembling part 602; and the adjusting groove 64 is arranged on the first assembling part 601.

[0115] Specifically, the second assembly part 602 is connected with the first mold part 10, so that the second assembly part 602 and the first mold part 10 are relatively fixed.

[0116] Specifically, along the direction perpendicular to the preset direction, the adjusting groove 64 is located at one side of the second runner 61.

[0117] Optionally, the second assembly part 602 is a plate structure, and the first assembly part 601 is a plate structure.

[0118] In the implementation process, when injection molding is performed, the injection fluid glue is first poured from the first end of the second runner 61, and the injection fluid glue flows into the molding cavity 30 along the second runner 61, the third runner 62 and the first runner 12; when it is necessary to adjust the speed of the injection fluid glue, the adjusting member 80 is driven to slide in the adjusting groove 64 by the operation member 81; when the adjusting member 80 slides, the shielding part 70 moves in the third runner 62, and the shielding part 70 continuously presses the second elastic member 71 or the third elastic member 72 in the movement process; the degree to which the shielding part 70 blocks the second port of the second runner 61 can be controlled by moving the operation member 81 and the adjusting member 80, so as to control the flow speed of the injection fluid glue, and further to ensure the effect of injection molding.

[0119] In the embodiment, the assembly part 60 further comprises a limiting part 641 arranged in the adjusting groove 64, the limiting part 641 is a strip-shaped structure arranged along the extension direction of the adjusting groove 64; along the groove width direction of the adjusting groove 64, the limiting part 641 is located at one side of the adjusting member 80, and the surface of the limiting part 641 facing the adjusting member 80 is a smooth surface, so as to facilitate the sliding of the adjusting member 80 along the limiting part 641; and the limiting part 641 is arranged to limit the sliding of the adjusting member 80. The groove width direction of the adjusting groove 64 is perpendicular to the extension direction of the adjusting groove 64, and the groove width direction of the adjusting groove 64 is perpendicular to the groove depth direction thereof.

[0120] In the implementation process, when the groove side wall of the adjusting groove 64 is relatively rough, the limiting part 641 can be arranged to prevent the adjusting member 80 from contacting the groove side wall of the adjusting groove 64 when sliding in the adjusting groove 64, so as to avoid the influence of the relatively rough groove side wall of the adjusting groove 64 on the sliding of the adjusting member 80.

[0121] Optionally, the limiting part 641 is a plate structure, and the plate surface of the limiting part 641 facing the adjusting member 80 is a smooth surface.

[0122] Optionally, at least one side of the adjusting member 80 is provided with the limiting part 641 along the groove width direction of the adjusting groove 64.

[0123] Optionally, the limiting part 641 is fixedly connected with the groove side wall of the adjusting groove 64.

[0124] In the embodiment, the second end of the first runner 12 is in communication with the cavity bottom wall of the first mold cavity 11, so as to facilitate the extrusion and discharge of the gas in the molding cavity 30 when the injection molding glue is injected into the molding cavity 30. Figure 2 The second cavity bottom wall 111 in the first mold cavity 11 is the cavity bottom wall of the first mold cavity 11.

[0125] Specifically, the second end of the first runner 12 is located on the cavity wall of the first mold cavity 11, that is, the second end of the first runner 12 is in direct communication with the first mold cavity 11.

[0126] The application further provides an injection molding device comprising the injection molding mold.

[0127] Specifically, the injection molding device further comprises a pushing component and a ejector pin assembly.

[0128] The conventional mold only uses the ejection mechanism for ejection demolding, which may cause problems such as die drawing crack and deformation, and the injection molding mold of the application can reduce or avoid such problems to a certain extent.

[0129] In the application process of the hot runner, the heating efficiency is different due to different injection materials, environmental temperatures and thermal resistances; at the same time, the cooling water channel is blocked to different degrees, which may cause the problem of blockage leading to a decrease in cooling efficiency. The injection speed of the conventional mold cannot be adjusted, and there are problems such as shear intensification, burning, gas trapping and the like caused by the mismatching of the injection speed, thereby causing problems such as product appearance and strength. The injection molding mold of the application can control and adjust the flow rate of the injection fluid glue in the injection molding process, so as to match and compensate for problems such as different injection materials, environmental temperatures, thermal resistances, heating efficiency, cooling water channel scale blockage and cooling efficiency decrease, and solve the problem of the conventional mold that the injection speed cannot be adjusted.

[0130] The conventional mold generally adopts an exhaust groove for exhaust, and the injection gas is generally corrosive. The exhaust groove and the mold gap are used for exhaust, and the corrosion caused by the exhaust groove and the mold gap may cause the mold gap to become larger, thereby causing problems such as product burrs and flash, and seriously affecting the surface quality of the mold and the precision of the molded product. At the same time, the corrosion, wear and impurities of the injection gas may also cause the gap of the exhaust groove to change or be blocked, thereby causing poor exhaust, resulting in the appearance of pores and weld lines at the end of injection, blind holes and the like, and thus causing poor injection molding effect. The injection molding mold of the application uses the gas storage component 40 to receive the exhaust of the molding cavity 30, and thus such problems do not exist.

[0131] From the above description, it can be seen that the above-mentioned embodiments of the application achieve the following technical effects:

[0132] In the injection mold provided by the application, the injection mold comprises a first mold part 10, a second mold part 20 and a gas storage part 40; the first mold part 10 has a first mold cavity 11 and a first runner 12; two ends of the first runner 12 are a first end and a second end respectively; the second end of the first runner 12 is communicated with the first mold cavity 11, and the first end of the first runner 12 is used for injecting injection plastic.

[0133] The second mold part 20 has a second mold cavity 21. The first mold part 10 and the second mold part 20 are detachably connected; when the first mold part 10 and the second mold part 20 are connected, the first mold part 10 and the second mold part 20 are relatively fixed, and the first mold cavity 11 and the second mold cavity 21 are spliced to form a forming cavity 30; at this time, the injection plastic can be injected into the forming cavity 30 through the first runner 12, so that the injection plastic injected into the forming cavity 30 forms an injection molded part in the forming cavity 30. Along the distribution direction of the first mold part 10 and the second mold part 20, the second mold cavity 21 has a cavity bottom wall facing the first mold part 10.

[0134] The gas storage part 40 has a gas vent; the gas vent of the gas storage part 40 is communicated with the cavity bottom wall of the second mold cavity 21. When injecting glue into the forming cavity 30, the injection plastic injected into the forming cavity 30 will extrude the gas in the forming cavity 30, so that the gas is discharged from the forming cavity 30; the gas extruded and discharged from the forming cavity 30 enters the gas storage part 40, that is, the gas storage part 40 receives the gas extruded and discharged from the forming cavity 30; at this time, the gas vent of the gas storage part 40 is its gas inlet.

[0135] When the molded part in the forming cavity 30 is demolded, the gas storage part 40 can discharge the gas in its interior to the forming cavity 30; at this time, the gas vent of the gas storage part 40 is its gas outlet; the gas discharged to the forming cavity 30 will generate an action force on the molded part in the forming cavity 30 in the direction from the second mold part 20 to the first mold part 10, which helps the molded part to fall off from the second mold part 20, so that the demolding of the molded part becomes more convenient, solving the problem that the demolding of the injection mold in the prior art is relatively inconvenient.

[0136] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0137] Spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device described is turned over in use, a downwardly-facing surface can then be oriented upwardly, and vice versa. Thus, the example term "below" can encompass both an orientation of below and above. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc., do not necessarily indicate any ordinal, chronological or other sequence unless expressly so defined by the relative terms or context.

[0138] The above description is embodied only by the preferred embodiments of the present application, and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An injection mold, characterized in that, include: A first mold part (10) has a first mold cavity (11) and a first runner (12); the second end of the first runner (12) is connected to the first mold cavity (11), and the first end of the first runner (12) is used for injection molding. The second mold part (20) has a second mold cavity (21); the first mold part (10) and the second mold part (20) are detachably connected so that the first mold cavity (11) and the second mold cavity (21) are spliced ​​together to form a molding cavity (30); along the distribution direction of the first mold part (10) and the second mold part (20), the second mold cavity (21) has a cavity bottom wall facing the first mold part (10); An air storage component (40) has an air vent that communicates with the bottom wall of the second mold cavity (21) so that when glue is injected into the molding cavity (30), the air storage component (40) receives the gas that is squeezed out of the molding cavity (30); when the molded part in the molding cavity (30) is demolded, the air storage component (40) discharges the gas inside it into the molding cavity (30) so that the gas discharged into the molding cavity (30) exerts a force on the molded part in the direction from the second mold part (20) to the first mold part (10), thereby causing the molded part to fall off the second mold part (20); The second mold part (20) has a preset channel (22) and a receiving chamber (23), and the gas storage component (40) is disposed in the receiving chamber (23); the first end of the preset channel (22) is connected to the bottom wall of the second mold cavity (21), and the second end of the preset channel (22) is connected to the vent of the gas storage component (40); The preset channel (22) includes a first channel portion (221) and a second channel portion (222), wherein the first channel portion (221) and the second channel portion (222) are distributed in a direction perpendicular to the extension direction of the preset channel (22); Wherein, the two ends of the first channel section (221) are respectively connected to the bottom wall of the second mold cavity (21) and the air vent of the gas storage component (40), so that the second mold cavity (21) and the air vent of the gas storage component (40) are connected through the first channel section (221); A heat-conducting component (223) is provided in the second channel section (222) so that when the molding cavity (30) is injected with glue, the heat in the second mold cavity (21) is transferred to the gas storage component (40) through the heat-conducting component (223), thereby causing the gas storage component (40) to expand due to heat; after the injection of glue into the molding cavity (30) is completed, the heat of the gas storage component (40) and its internal gas is discharged through the heat-conducting component (223), and when the temperature of the gas storage component (40) drops to a preset temperature, the gas storage component (40) contracts to discharge the gas inside.

2. The injection mold according to claim 1, characterized in that, Both ends of the preset channel (22) are provided with vents (224) to allow gas to pass through the vents (224); and / or The thermally conductive element (223) is a non-volatile ionic liquid; and / or The second channel portion (222) is disposed around the first channel portion (221); and / or The second mold part (20) also has a connecting channel (24), the first end of which is connected to the second end of the preset channel (22), and the second end of which is connected to the vent of the gas storage component (40); and / or The gas storage component (40) is an airbag.

3. The injection mold according to claim 1, characterized in that, The first mold part (10) and the second mold part (20) are provided with a positioning hole (25) on one of them and a positioning part (13) on the other; the injection mold further includes: The first elastic element (50) has a telescopic direction that is parallel or the same as the distribution direction of the first mold part (10) and the second mold part (20); the first elastic element (50) has a first end and a second end that are disposed opposite to each other along its telescopic direction; the second end of the first elastic element (50) is fixed relative to the hole wall of the positioning hole (25), and the first end of the first elastic element (50) is located on the side of its second end facing the positioning part (13); When the molding cavity (30) is filled with glue, the temperature of the first elastic element (50) rises and reaches the set temperature, so that the first elastic element (50) is in a contracted state, and the positioning part (13) passes through the positioning hole (25). After the injection of adhesive into the molding cavity (30) is completed, as the temperature of the first elastic element (50) decreases and falls below the set temperature, the contracted first elastic element (50) begins to extend, so that under the elastic force of the first elastic element (50), it generates a force on the first mold part (10) away from the second mold part (20).

4. The injection mold according to claim 3, characterized in that, The first elastic element (50) is a memory spring; and / or The positioning part (13) is a rod-shaped structure extending along the distribution direction of the first mold part (10) and the second mold part (20); and / or The positioning structure includes the positioning hole (25), the positioning part (13), and the first elastic element (50). There are multiple positioning structures, spaced apart around a first axis. The extending direction of the first axis is parallel or the same as the distribution direction of the first mold part (10) and the second mold part (20); and / or The first end of the first elastic member (50) is provided with a positioning block (51). When the positioning part (13) passes through the positioning hole (25), the positioning part (13) abuts against the positioning block (51).

5. The injection mold according to claim 1, characterized in that, One of the first mold part (10) and the second mold part (20) is provided with a limiting member (26), and the other is provided with a limiting hole (14), wherein the limiting member (26) is used to pass through the limiting hole (14); and / or The injection mold also includes a sealing gasket (27), which is disposed on the surface of the second mold part (20) facing the first mold part (10) or the surface of the first mold part (10) facing the second mold part (20), and at least a portion of the sealing gasket (27) is made of a flexible material.

6. The injection mold according to claim 1, characterized in that, The injection mold also includes: An assembly component (60) is disposed on the first mold part (10); the assembly component (60) has a second runner (61) and a third runner (62); the first end of the second runner (61) is used for injection molding; the second end of the second runner (61) is connected to the first end of the third runner (62); the opening cross-section of the second end of the second runner (61) is smaller than the opening cross-section of the first end of the third runner (62); the second end of the third runner (62) is connected to the first end of the first runner (12); A shielding part (70) is movably disposed within the third runner (62) to shield at least a portion of the second port of the second runner (61), or to move the shielding part (70) away from the second port of the second runner (61) to make way for the second port of the second runner (61), thereby adjusting the flow rate of the second port of the second runner (61).

7. The injection mold according to claim 6, characterized in that, The third runner (62) has a first sidewall and a second sidewall disposed opposite to each other along a preset direction, the preset direction being perpendicular to the distribution direction of the second runner (61) and the third runner (62); the blocking part (70) is movably disposed along the preset direction to block at least a portion of the second port of the second runner (61), or the blocking part (70) is located away from the second port of the second runner (61); the injection mold further includes: The second elastic member (71) has a telescopic direction parallel to or the same as the preset direction; the second elastic member (71) has a first end and a second end disposed opposite to each other along its telescopic direction; the first end of the second elastic member (71) is connected to the first sidewall of the third gating system (62), and the second end of the second elastic member (71) is connected to the shielding part (70); and / or The third elastic element (72) has a telescopic direction that is parallel or the same as the preset direction; the third elastic element (72) has a first end and a second end that are arranged opposite to each other along its telescopic direction; the first end of the third elastic element (72) is connected to the shielding part (70), and the second end of the third elastic element (72) is connected to the second side wall of the third gating channel (62).

8. The injection mold according to claim 6 or 7, characterized in that, A stepped structure (63) is formed between the sidewall of the second runner (61) and the sidewall of the third runner (62). The surface of the shielding part (70) facing the second runner (61) contacts the stepped surface (631) of the stepped structure (63), and the shielding part (70) is slidably disposed along the stepped surface (631) of the stepped structure (63).

9. The injection mold according to claim 7, characterized in that, The assembly component (60) has an adjustment groove (64); the adjustment groove (64) is located on one side of the third runner (62) in a direction perpendicular to the preset direction; the adjustment groove (64) is a strip-shaped groove extending in a direction parallel to the preset direction; the injection mold further includes: An adjusting member (80) is slidably disposed along the extension direction of the adjusting groove (64); both the adjusting member (80) and the blocking part (70) are magnetic members, so that there is a magnetic attraction between the adjusting member (80) and the blocking part (70), and when the adjusting member (80) slides along the extension direction of the adjusting groove (64), it drives the blocking part (70) to move along the preset direction.

10. An injection molding machine, characterized in that, The injection mold includes any one of claims 1 to 9.

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