A structure for reusing the residual gas of a runner gate

Abstract

The present invention provides a structure for reusing the residual gas of a runner gate, including a runner gate mechanism provided with a runner gate body, a temperature regulating component, and an ejection component. The temperature regulating component is arranged on the runner gate body, and the ejection component is arranged on the temperature regulating component; a gas supply mechanism communicated with the temperature regulating air passage; a residual gas recovery mechanism communicated with the temperature regulating air passage; and a residual gas work mechanism communicated with the residual gas recovery mechanism. It realizes direct temperature regulation of the runner gate body and the ejection component, avoiding collision and heat exchange between the ejection component and the runner gate body; by setting up a residual gas recovery mechanism, the high-pressure residual gas that has completed heat exchange with the runner gate mechanism is guided to the residual gas work mechanism to do work or recovered and stored, providing a guarantee for the real-time reuse of high-pressure residual gas; by setting up a residual gas work mechanism, it realizes the reuse of high-pressure residual gas to do work, avoiding waste of energy in the high-pressure residual gas.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and particularly relates to a structure for recycling residual gas of a runner gate. Background Art

[0002] The main runner and the gate are important components in an injection mold that bear the passage of plastic fluid. The molten injection plastic reaches the cavity of the injection mold through the main runner and the gate, and then is cooled and formed, and finally is ejected by an ejection structure to complete the injection of the product; during the injection process, the temperature control at each stage directly affects the injection quality. Moreover, the ejection structure also passes through the runner gate mechanism and moves relative to the runner gate mechanism to eject the injection product.

[0003] It can be seen that there will be a problem of the ejection structure colliding with the runner gate mechanism during the movement, damaging the runner gate mechanism and the ejection structure; at the same time, when the ejection structure is in the runner gate mechanism, heat exchange will also occur between the ejection structure and the runner gate mechanism, thereby affecting the temperature control of the plastic during the injection process, especially the temperature control at the runner gate mechanism, and further affecting the injection quality; therefore, in the prior art, in order to ensure the temperature control at the runner gate mechanism, temperature control is often configured, but the heat medium in the current temperature control process is often configured for high-pressure filling and is often directly discharged after heat exchange, resulting in waste of high-pressure energy.

[0004] Therefore, there are defects and deficiencies in the prior art, which need to be further improved and developed. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a structure for recycling residual gas of a runner gate, aiming to solve the problems of collision between the ejector and the runner gate mechanism in the runner gate mechanism during injection molding and waste of high-pressure energy during the temperature control process in the prior art.

[0006] The technical solution adopted by the present invention to solve the technical problems is as follows: A structure for recycling residual gas of a runner gate, which includes:

[0007] A runner gate mechanism, in which a runner gate body, a temperature control component, and an ejection component are provided. The temperature control component is arranged on the runner gate body, and the ejection component is arranged on the temperature control component;

[0008] An air supply mechanism, which is communicated with the temperature control component;

[0009] A residual gas recovery mechanism, which is communicated with the temperature control component;

[0010] A residual gas work mechanism, which is communicated with the residual gas recovery mechanism.

[0011] Furthermore, the runner gate mechanism further includes:

[0012] A main runner, which is arranged on the runner gate body;

[0013] Gates, which are arranged on the runner gate body, on both sides of the main runner, and communicate with the main runner;

[0014] Wherein, an air-cooling hole communicating with the temperature control component is formed on the runner gate body, and the ejection component is arranged in the air-cooling hole.

[0015] Furthermore, the temperature control component includes:

[0016] A temperature control air channel, which is arranged in the runner gate body and communicates with the air-cooling hole;

[0017] An air-cooling core, which is arranged in the air-cooling hole, communicates with the temperature control air channel, and seals off the air-cooling hole and the temperature control air channel. Wherein, the ejection component is arranged in the air-cooling core.

[0018] Furthermore, the air-cooling core includes:

[0019] An air-cooling core body, which is arranged in the air-cooling hole;

[0020] An ejection hole, which is arranged along the axis of the air-cooling core body, and the ejection component is arranged in the ejection hole;

[0021] An annular air chamber, which is arranged at the joint of the air-cooling core body and the temperature control air channel;

[0022] A first sealing part, which is arranged at one end of the air-cooling core body along the axial direction for sealing the air-cooling hole;

[0023] A second sealing part, which is arranged at the other end of the air-cooling core body along the axial direction for sealing the air-cooling hole;

[0024] Wherein, the first sealing part and the second sealing part are respectively arranged on both sides of the annular air chamber along the axial direction.

[0025] Furthermore, the air-cooling core further includes:

[0026] A first sealing ring, which is sleeved in the first sealing part and has an interference fit with the air-cooling hole;

[0027] A second sealing ring, which is sleeved in the second sealing part and has an interference fit with the air-cooling hole.

[0028] Furthermore, the first sealing portion, the annular air chamber, and the second sealing portion are all arranged as annular groove structures;

[0029] Both the first sealing ring and the second sealing ring are arranged as elastic sealing rings.

[0030] Furthermore, the ejecting assembly includes:

[0031] A thimble sleeve, which is arranged in the ejecting hole;

[0032] A thimble, which is arranged in the thimble sleeve and is slidably connected to the thimble sleeve.

[0033] Furthermore, the air supply mechanism includes:

[0034] A three-way solenoid valve, which has a first interface, a second interface, and a third interface. Among them, the third interface is communicated with one end of the temperature regulating air passage;

[0035] A high-pressure hot air supply device, which is communicated with the first interface;

[0036] A high-pressure cold air supply device, which is communicated with the second interface.

[0037] Furthermore, the waste gas recovery mechanism includes:

[0038] A high-pressure storage tank, one end of which is communicated with the air outlet of the temperature regulating assembly.

[0039] Furthermore, the waste gas recovery mechanism further includes:

[0040] A vacuum generator, which is communicated with the waste gas recovery mechanism;

[0041] A vacuum tank, which is communicated with the vacuum generator.

[0042] The present invention provides a structure for reusing the residual gas of a runner gate. The structure for reusing the residual gas of a runner gate includes: a runner gate mechanism, in which a runner gate body, a temperature adjustment component, and an ejection component are provided. The temperature adjustment component is arranged on the runner gate body, and the ejection component is arranged on the temperature adjustment component; a gas supply mechanism, which is communicated with the temperature adjustment air passage; a residual gas recovery mechanism, which is communicated with the temperature adjustment air passage; and a residual gas work mechanism, which is communicated with the residual gas recovery mechanism. It can be understood that by opening a temperature adjustment component on the runner gate body of the runner gate mechanism and arranging the ejection component on the temperature adjustment component, a heat exchange medium, such as high-pressure hot gas and high-pressure cold gas, can be introduced to directly adjust the temperature of the runner gate body and the ejection component, and collisions and heat exchange between the ejection component and the runner gate body can be avoided; by setting the residual gas recovery mechanism, the high-pressure residual gas that has completed heat exchange with the runner gate mechanism is effectively guided to the residual gas work mechanism for work, or the high-pressure residual gas that has completed heat exchange with the runner gate mechanism and flows out of the temperature adjustment air passage is recovered and stored, providing a guarantee for the real-time reuse of high-pressure residual gas; by setting the residual gas work mechanism, the high-pressure residual gas can be reused for work, effectively avoiding the waste of energy in the high-pressure residual gas and effectively saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic diagram of the functional principle of the structure for reusing the residual gas of a runner gate provided in the present invention;

[0044] Figure 2 is a three-dimensional structure diagram of the runner gate mechanism of the structure for reusing the residual gas of a runner gate provided in the present invention;

[0045] Figure 3 is a three-dimensional exploded diagram of the runner gate mechanism of the structure for reusing the residual gas of a runner gate provided in the present invention;

[0046] Figure 4 is the present invention Figure 1 partial enlarged view of part A;

[0047] Description of the reference numerals:

[0048] 1. Residual gas recycling structure of runner gate; 10. Runner gate mechanism; 20. Air supply mechanism; 30. Residual gas recovery mechanism; 40. Residual gas work mechanism; 11. Runner gate body; 12. Temperature control component; 13. Ejection component; 14. Main runner; 15. Gate; 111. Air cooling hole; 121. Temperature control air duct; 122. Air cooling core; 123. Air cooling core body; 124. Ejection hole; 125. Annular air chamber; 126. First sealing part; 127. Second sealing part; 128. First sealing ring; 129. Second sealing ring; 131. Thimble sleeve; 132. Thimble; 21. Three-way solenoid valve; 22. First interface; 23. Second interface; 24. Third interface; 25. High-pressure hot gas supply device; 26. High-pressure cold gas supply device; 31. High-pressure storage tank; 41. Vacuum generator; 42. Vacuum tank. Detailed implementation mode

[0049] To make the purpose, technical solutions and advantages of the present invention clearer and more definite, the following further elaborates on the present invention by way of examples with reference to the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The sprue and the gate are important components in an injection mold that bear the passage of plastic fluid. The molten injection plastic reaches the cavity of the injection mold through the sprue and the gate, and then is cooled and formed, and finally is ejected by the ejection structure to complete the product injection. During the injection process, the temperature control at each stage directly affects the injection quality. Moreover, the ejection structure also passes through the runner gate mechanism and moves relative to the runner gate mechanism to eject the injection product. It can be seen that there will be a problem of collision between the ejection structure and the runner gate mechanism during the movement, damaging the runner gate mechanism and the ejection structure. At the same time, when the ejection structure is in the runner gate mechanism, heat exchange will also occur between the ejection structure and the runner gate mechanism, thereby affecting the temperature control of the plastic during the injection process, especially the temperature control at the runner gate mechanism, and further affecting the injection quality. Therefore, in the prior art, in order to ensure the temperature control at the runner gate mechanism, temperature control is often configured. However, the heat medium in the current temperature control process is often configured for high-pressure filling and is often directly discharged after heat exchange, resulting in waste of high-pressure energy. Based on the problems of collision between the ejector and the runner gate mechanism in the runner gate mechanism during injection and waste of high-pressure energy during the temperature control process in the prior art, the present invention provides a residual gas reuse structure for the runner gate. By opening a temperature control component on the runner gate body of the runner gate mechanism and arranging the ejection component on the temperature control component, heat exchange media such as high-pressure hot gas and high-pressure cold gas can be introduced to directly adjust the temperature of the runner gate body and the ejection component, and at the same time, collision and heat exchange between the ejection component and the runner gate body can be avoided. By setting the residual gas recovery mechanism, the high-pressure residual gas that has completed heat exchange with the runner gate mechanism is effectively guided to the residual gas work mechanism for work, or the high-pressure residual gas that has completed heat exchange with the runner gate mechanism and flows out of the temperature control air duct is recovered and stored, providing a guarantee for the real-time reuse of high-pressure residual gas. By setting the residual gas work mechanism, the high-pressure residual gas can be reused for work, effectively avoiding waste of energy in the high-pressure residual gas and effectively saving energy. For specific details, please refer to the following embodiments in detail.

[0053] Please refer to Figures 1 to 3 In the first embodiment of the present invention, a residual gas reuse structure 1 for a runner gate is provided, which includes: a runner gate mechanism 10, a gas supply mechanism 20, a residual gas recovery mechanism 30, and a residual gas work mechanism 40. A runner gate body 11, a temperature control component 12, and an ejection component 13 are provided in the runner gate mechanism 10. The temperature control component 12 is arranged on the runner gate body 11, and the ejection component 13 is arranged on the temperature control component 12. The gas supply mechanism 20 is communicated with the temperature control component 12. The residual gas recovery mechanism 30 is communicated with the temperature control component 12. The residual gas work mechanism 40 is communicated with the residual gas recovery mechanism 30.

[0054] It can be understood that by providing a temperature control component 12 on the runner gate body 11 of the runner gate mechanism 10 and arranging the ejection component 13 on the temperature control component 12, a heat exchange medium such as high-pressure hot gas and high-pressure cold gas can be introduced to directly control the temperature of the runner gate 15 body and the ejection component 13, and collisions and heat exchange between the ejection component 13 and the runner gate 15 body can be avoided; by providing the residual gas recovery mechanism 30, the high-pressure residual gas that has completed heat exchange with the runner gate mechanism 10 is effectively guided to the residual gas work mechanism 40 for work, or the high-pressure residual gas flowing out of the temperature control air channel 121 that has completed heat exchange with the runner gate mechanism 10 is recovered and stored, providing a guarantee for the real-time reuse of high-pressure residual gas; by providing the residual gas work mechanism 40, the high-pressure residual gas can be used for work again, effectively avoiding the waste of energy in the high-pressure residual gas and effectively saving energy.

[0055] In some other embodiments, the runner gate mechanism 10 further includes: a main runner 14 and a gate 15; the main runner 14 is provided on the runner gate body 11; the gate 15 is provided on the runner gate body 11, on both sides of the main runner 14, and is in communication with the main runner 14; wherein, an air-cooling hole 111 communicating with the temperature control component 12 is provided on the runner gate body 11, and the ejection component 13 is arranged in the air-cooling hole 111.

[0056] It can be understood that the temperature control component 12, the ejection component 13, the main runner 14 and the gate 15 are all provided on the runner gate body 11; wherein, the temperature control component 12 and the main runner 14 are directly provided on the runner gate body 11, the ejection component 13 is provided on the runner gate body 11 through the temperature control component 12, and the gate 15 is provided on both sides of the main runner 14; specifically, the temperature control component 12 is also distributed in the air-cooling hole 111, and the ejection component 13 is arranged in the air-cooling hole 111, thereby preventing direct temperature control of the runner gate 15 body and the ejection component 13, and avoiding collisions between the ejection component 13 and the runner gate 15 body.

[0057] In some other embodiments, the temperature control component 12 includes: a temperature control air channel 121 and an air-cooling core 122; the temperature control air channel 121 is provided in the runner gate body 11 and is in communication with the air-cooling hole 111; the air-cooling core 122 is provided in the air-cooling hole 111, and the air-cooling core 122 is in communication with the temperature control air channel 121 and hermetically separates the air-cooling hole 111 and the temperature control air channel 121, wherein, the ejection component 13 is arranged in the air-cooling core 122.

[0058] It can be understood that by providing a temperature control air passage 121 in the runner gate body 11, the temperature of the runner gate body 11 can be effectively controlled. At the same time, by providing an air-cooled core 122 at the temperature control air passage 121 and arranging the ejection assembly 13 in the air-cooled core 122, the connection between the ejection assembly 13 and the temperature control assembly 12 is realized, which facilitates the temperature control assembly 12 to adjust the temperature of the ejection assembly 13. At the same time, by arranging the ejection assembly 13 in the air-cooled core 122, the direct contact between the ejection assembly 13 and the runner gate body 11 can be avoided, blocking the heat exchange between the ejection assembly 13 and the runner gate body 11, and preventing the plastic in the runner gate body 11 from changing temperature due to the ejection assembly 13. At the same time, the collision between the ejection assembly 13 and the runner gate body 11 is also avoided, protecting the structural integrity of the ejection and temperature control structure of the runner gate 15.

[0059] Please further refer to Figure 4 In some other embodiments, the air-cooled core 122 includes: an air-cooled core body 123, an ejection hole 124, an annular air chamber 125, a first sealing portion 126, and a second sealing portion 127. The air-cooled core body 123 is arranged in the air-cooling hole 111. The ejection hole 124 is arranged along the axis of the air-cooled core body 123, and the ejection assembly 13 is arranged in the ejection hole 124. The annular air chamber 125 is arranged at the junction of the air-cooled core body 123 and the temperature control air passage 121. The first sealing portion 126 is arranged at one end of the air-cooled core body 123 along the axial direction for sealing the air-cooling hole 111. The second sealing portion 127 is arranged at the other end of the air-cooled core body 123 along the axial direction for sealing the air-cooling hole 111. Wherein, the first sealing portion 126 and the second sealing portion 127 are respectively arranged on both sides of the annular air chamber 125 along the axial direction.

[0060] It can be understood that the air-cooled core body 123 is fixedly connected to the air-cooling hole 111, the ejection assembly 13 is arranged in the ejection hole 124, and the annular air chamber 125 is the cross-region between the air-cooled core body 123 and the temperature control air passage 121, which is used to ensure the normal operation of the temperature control air passage 121 through the high-pressure air flow in the temperature control air passage 121. The first sealing portion 126 and the second sealing portion 127 are used to isolate and seal the temperature control air passage 121 and the air-cooling hole 111. The high-pressure air flow in the temperature control assembly 12 passes through the annular air chamber 125 and is blocked and restricted in the temperature control air passage 121 by the first sealing portion 126 and the second sealing portion 127 to ensure the normal operation of the temperature control air passage 121.

[0061] In some other embodiments, the air-cooled core 122 further includes: a first sealing ring 128 and a second sealing ring 129; the first sealing ring 128 is sleeved in the first sealing portion 126 and is in interference fit with the air-cooling hole 111; the second sealing ring 129 is sleeved in the second sealing portion 127 and is in interference fit with the air-cooling hole 111.

[0062] It can be understood that by sleeving the first sealing ring 128 in the first sealing portion 126 and sleeving the second sealing ring 129 in the second sealing portion 127, the sealing performance of the air-cooled core 122 can be ensured, and the maintenance and repair of the air-cooled core 122 can be facilitated.

[0063] In some other embodiments, the first sealing portion 126, the annular air chamber 125 and the second sealing portion 127 are all arranged in an annular groove structure; the first sealing ring 128 and the second sealing ring 129 are both arranged as elastic sealing rings.

[0064] It can be understood that by arranging the first sealing portion 126, the annular air chamber 125 and the second sealing portion 127 in an annular groove structure, the sealing performance of the air-cooled core 122 is ensured, and at the same time, the air flow in the temperature control air passage 121 can pass normally; by arranging the first sealing ring 128 and the second sealing ring 129 as elastic sealing rings, the sealing performance of the air-cooled core 122 is further improved.

[0065] In some other embodiments, the ejection assembly 13 includes: an ejector sleeve 131 and an ejector pin 132; the ejector sleeve 131 is arranged in the ejection hole 124; the ejector pin 132 is arranged in the ejector sleeve 131 and is slidably connected to the ejector sleeve 131.

[0066] It can be understood that the ejector pin 132 is used to eject the product and slides relative to the ejector sleeve 131, and the ejector sleeve 131 is fixedly installed in the ejection hole 124; the ejector pin 132 and the ejector sleeve 131 exchange heat with the high-pressure air flow in the temperature control air passage 121 through the air-cooled core 122 to maintain the same temperature as the runner gate body 11 and improve the injection molding quality.

[0067] In some other embodiments, the air supply mechanism 20 includes: a three-way solenoid valve 21, a high-pressure hot air supply device 25 and a high-pressure cold air supply device 26. The three-way solenoid valve 21 has a first interface 22, a second interface 23 and a third interface 24. Among them, the third interface 24 is communicated with one end of the temperature control air passage 121; the high-pressure hot air supply device 25 is communicated with the first interface 22; the high-pressure cold air supply device 26 is communicated with the second interface 23.

[0068] It can be understood that the temperature adjustment component 12 can provide high-pressure cold air or high-pressure hot air through the air supply mechanism 20, so as to realize the temperature adjustment of the runner gate body 11 and the ejection component 13, and ensure the injection molding quality.

[0069] In some other embodiments, the waste gas recovery mechanism 30 includes: a high-pressure storage tank 31, and one end of the high-pressure storage tank 31 is communicated with the air outlet of the temperature adjustment component 12.

[0070] It can be understood that by setting the high-pressure storage tank 31, high-pressure waste gas with a certain pressure can be temporarily recovered and stored. When the waste gas is needed, the high-pressure waste gas is released through the high-pressure storage tank 31, thereby improving the high-pressure waste gas recycling ability of the waste gas recycling structure 1 of the runner gate.

[0071] In some other embodiments, the waste gas recovery mechanism 30 further includes: a vacuum generator 41 and a vacuum tank 42; the vacuum generator 41 is communicated with the waste gas recovery mechanism 30; the vacuum tank 42 is communicated with the vacuum generator 41.

[0072] It can be understood that the vacuum generator 41 is driven to operate by the high-pressure waste gas, that is, the high-pressure waste gas is used as the power source of the vacuum generator 41; thereby generating vacuum energy storage in the vacuum tank 42, which is used as the vacuum source for driving injection production auxiliary equipment such as manipulators, polishing machines, and in-mold cavity vacuum pumping. This effectively saves the energy for driving the vacuum generator 41. At the same time, it can be configured on the same machine as the injection molding die equipment, reducing the setting of dedicated vacuum pipelines and lowering the installation and use costs of the vacuum system, achieving the effect of green environmental protection and energy conservation.

[0073] In summary, the present invention provides a structure for reusing the residual gas of a runner gate. The structure for reusing the residual gas of a runner gate includes: a runner gate mechanism, in which a runner gate main body, a temperature regulating component, and an ejection component are provided. The temperature regulating component is arranged on the runner gate main body, and the ejection component is arranged on the temperature regulating component; a gas supply mechanism, which is communicated with the temperature regulating air passage; a residual gas recovery mechanism, which is communicated with the temperature regulating air passage; a residual gas work mechanism, which is communicated with the residual gas recovery mechanism. It can be understood that by opening a temperature regulating component on the runner gate main body of the runner gate mechanism and arranging the ejection component on the temperature regulating component, a heat exchange medium, such as high-pressure hot gas and high-pressure cold gas, can be introduced to directly regulate the temperature of the runner gate body and the ejection component, and collisions and heat exchange between the ejection component and the runner gate body can be avoided; by setting the residual gas recovery mechanism, the high-pressure residual gas that has completed heat exchange with the runner gate mechanism is effectively guided to the residual gas work mechanism to do work, or the high-pressure residual gas that has flowed out of the temperature regulating air passage and has completed heat exchange with the runner gate mechanism is recovered and stored, providing a guarantee for the real-time reuse of high-pressure residual gas; by setting the residual gas work mechanism, the high-pressure residual gas can be reused to do work, effectively avoiding the waste of energy in the high-pressure residual gas and effectively saving energy.

[0074] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A structure for reusing the residual gas of a runner gate, characterized in that, Including: A runner gate mechanism, in which a runner gate body, a temperature control component and an ejection component are provided; An air supply mechanism, which is communicated with the temperature control component; An exhaust gas recovery mechanism, which is communicated with the temperature control component; An exhaust gas work mechanism, which is communicated with the exhaust gas recovery mechanism; The temperature control component includes: A temperature control air duct, which is arranged in the runner gate body and communicated with the air cooling holes; An air cooling core, which is arranged in the air cooling holes, and the air cooling core is communicated with the temperature control air duct and seals off the air cooling holes and the temperature control air duct. Among them, the ejection component is arranged in the air cooling core; The air cooling core includes: An air cooling core body, which is arranged in the air cooling holes; An ejection hole, which is arranged along the axis of the air cooling core body; An annular air chamber, which is arranged at the joint of the air cooling core body and the temperature control air duct; A first sealing part, which is arranged at one end of the air cooling core body along the axial direction for sealing the air cooling holes; A second sealing part, which is arranged at the other end of the air cooling core body along the axial direction for sealing the air cooling holes; Among them, the first sealing part and the second sealing part are respectively arranged on both sides of the annular air chamber along the axial direction; The ejection component includes: A thimble sleeve, which is arranged in the ejection hole; A thimble, which is arranged in the thimble sleeve and is slidably connected with the thimble sleeve.

2. The residual gas recycling structure of the runner gate according to claim 1, characterized in that, The air cooling core further includes: A first sealing ring, which is sleeved in the first sealing part and has an interference fit with the air cooling holes; A second sealing ring, which is sleeved in the second sealing part and has an interference fit with the air cooling holes.

3. The exhaust gas recycling structure of the runner gate according to claim 2, wherein The first sealing part, the annular air chamber and the second sealing part are all arranged in an annular groove structure; The first sealing ring and the second sealing ring are both arranged as elastic sealing rings.

4. The residual gas recycling structure of the runner gate according to claim 1, characterized in that The air supply mechanism includes: A three-way solenoid valve, which has a first interface, a second interface and a third interface. Among them, the third interface is communicated with one end of the temperature control air duct; A high-pressure hot gas supply device, which is communicated with the first interface; A high-pressure cold gas supply device, which is communicated with the second interface.

5. The residual gas recycling structure of the runner gate according to any one of claims 1-4, characterized in that The exhaust gas recovery mechanism includes: A high-pressure storage tank, one end of which is communicated with the air outlet of the temperature control component.

6. The residual gas reuse structure of the runner gate according to claim 5, characterized in that, The exhaust gas recovery mechanism further includes: A vacuum generator, which is communicated with the exhaust gas recovery mechanism; A vacuum tank, which is communicated with the vacuum generator.

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