High-toughness dust cover demoulding structure

Abstract

The application relates to the field of molds, in particular to a high-toughness dustproof sleeve demolding structure which comprises an upper mold, a lower mold, an insert block, a push rod and a material ejecting rod, the upper mold is arranged above the lower mold, the lower end of the upper mold is provided with a mounting port, the upper end of the upper mold is provided with a sliding port, the sliding port is coaxially communicated with the mounting port, the insert block is slidably connected to the inner wall of the mounting port, the insert block is coaxially provided with a fixing port, the push rod is slidably connected to the inner wall of the fixing port and the inner wall of the sliding port, the upper end of the lower mold is provided with a forming groove, when the upper mold and the lower mold are closed, the insert block extends into the forming groove, a forming cavity is formed between the outer wall of the insert block, the outer wall of the push rod and the inner wall of the forming groove, the groove bottom of the forming groove is provided with a material ejecting port, and the material ejecting rod is slidably connected to the inner wall of the material ejecting port. When the upper mold and the lower mold are closed, injection molding is carried out in the forming cavity, the mold is opened after forming, the upper mold moves upwards, the push rod fixes the product, the push rod moves after the insert block is far away from the product, the product is ejected by the material ejecting rod, the product is not easy to be damaged, and the production quality of the product is improved.

Description

Technical Field

[0001] This application relates to the field of molds, and in particular to a high-toughness dust cover release structure. Background Technology

[0002] High-toughness dust covers are protective products with excellent flexibility and durability, widely used in various equipment and scenarios requiring dust protection. They are typically injection molded from materials with excellent abrasion and tear resistance.

[0003] In existing technologies, when using molds to manufacture high-toughness dust covers, the mold core for manufacturing dust covers is generally located in the lower mold. When the product is demolded, a push rod installed on the lower mold is needed to push the product out a second time. Forced demolding can easily cause deformation of the product, resulting in an unsatisfactory appearance or even damage to the product, reducing the production quality and affecting the production qualification rate. Summary of the Invention

[0004] In order to improve the production quality of products, this application provides a high-toughness dust cover demolding structure.

[0005] The high-toughness dust cover demolding structure provided in this application adopts the following technical solution:

[0006] A high-toughness dust cover release structure includes an upper mold, a lower mold, an insert, a push rod, and an ejector rod. The upper mold is located above the lower mold. The lower end of the upper mold has an installation port, and the upper end of the upper mold has a sliding port. The sliding port is coaxially connected to the installation port. The insert is slidably connected to the inner wall of the installation port. The insert is coaxially connected to a fixing port. The push rod is slidably connected to the inner wall of the fixing port and the inner wall of the sliding port. The upper end of the lower mold has a forming groove. When the upper and lower molds are closed, the insert extends into the forming groove. A cavity is formed between the outer wall of the insert, the outer wall of the push rod, and the inner wall of the forming groove. The bottom of the forming groove has an ejector port, and the ejector rod is slidably connected to the inner wall of the ejector port.

[0007] By adopting the above technical solution, when the upper mold and lower mold are closed, the mold is injected into the cavity. After molding, the mold is opened, the upper mold moves upward away from the product, the push rod abuts against the product to fix the product, and after the insert moves away from the product, the push rod moves away from the product, and the ejector rod slides to eject the product, thus completing the product demolding. The product is not easily damaged, and the production quality of the product is improved.

[0008] Preferably, it further includes an anti-detachment ring, wherein the inner wall of the sliding port is coaxially provided with an anti-detachment opening, the anti-detachment opening is connected to the mounting port, the diameter of the anti-detachment opening is larger than the diameter of the mounting port, the anti-detachment ring is coaxially fixedly connected to the outer wall of the insert, and the anti-detachment ring is slidably connected to the inner wall of the anti-detachment opening.

[0009] By adopting the above technical solution, the anti-detachment ring limits the movement of the insert, making it difficult for the insert to come out of the upper mold and improving the stability of the device.

[0010] Preferably, it also includes a compression spring, and the inner wall of the sliding port is coaxially provided with a limiting port. The lower end of the limiting port is connected to the upper end of the anti-disengagement port. The diameter of the limiting port is smaller than the diameter of the anti-disengagement port. The compression spring is sleeved on the outer periphery of the push rod, and the two ends of the compression spring are respectively connected to the inner wall facing downward of the limiting port and the upper end of the insert.

[0011] By adopting the above technical solution, when the upper and lower molds are closed, the compression spring contracts to facilitate the formation of the cavity. When the upper and lower molds are opened, the compression spring returns to its original position, causing the insert to press against the lower mold to fix the product. This allows the upper mold to move away from the product and complete the first demolding. As the upper mold continues to move upward, the push rod fixes the product, and the anti-detachment ring allows the insert to move with the upper mold to complete the second demolding. The upper mold then moves upward again, the push rod moves away from the product, and the ejector rod pushes the product out, completing the demolding process. The product is less prone to damage, thus improving the production quality.

[0012] Preferably, it further includes an upper support block, an upper top plate, a sliding block, and a limiting block. The upper support block is fixedly connected to the upper end of the upper mold. The lower end of the upper support block is provided with a receiving groove, which communicates with the sliding opening. The upper top plate is slidably connected to the groove wall of the receiving groove. The upper end of the push rod is fixedly connected to the upper top plate. The outer wall of the upper support block is provided with a connecting opening, which communicates with the receiving groove. The outer wall of the upper top plate facing the connecting opening is provided with a sliding groove. The sliding block is slidably connected to the inner wall of the sliding groove. The lower end of the limiting block is fixedly connected to the outer wall of the lower mold. The upper end of the limiting block is located on the side of the connecting opening away from the sliding groove. The outer wall of the limiting block facing the upper mold is provided with a clearance groove, which is used for the sliding block to extend into.

[0013] By adopting the above technical solution, when the upper and lower molds open, the sliding block slides into the clearance groove. As the upper mold moves upward, the push rod keeps pressed against the lower mold due to the limitation of the clearance groove on the sliding block. When the insert moves away from the product, the sliding block slides away from the clearance groove. The limiting block does not block the sliding block. The movement of the upper mold drives the push rod away from the lower mold, which facilitates stable demolding of the product. This prevents the upper mold from moving the upper top plate when the insert has not detached from the product, causing the product to move with the insert. This would require manual demolding later, which could easily damage the product.

[0014] Preferably, it further includes a control block and a return spring. The lower end of the upper top plate is provided with a control groove, which is connected to the sliding groove. The control block is fixedly connected to the upper end of the upper mold. The control groove is used for the control block to extend into. One end of the return spring is connected to the bottom of the sliding groove, and the other end of the return spring is connected to the sliding block. The upper end of the control block is provided with a first guide surface, and the lower end of the sliding block is provided with a second guide surface. The distance from the second guide surface to the return spring increases with the increase of height. The second guide surface is used for the first guide surface to abut against.

[0015] By adopting the above technical solution, during the process of the insert detaching from the product, the upper top plate moves closer to the upper mold, the control block extends into the control groove, the second guide surface abuts against the first guide surface, and the sliding block moves away from the limit block. When the insert detaches from the product, the sliding block extends into the sliding groove, and the limit block can no longer obstruct the movement of the upper top plate. The upper mold drives the push rod away from the product, and the return spring causes the upper mold and lower mold to move closer to each other, that is, when the upper top plate moves away from the upper mold, the sliding block automatically resets and embeds into the clearance groove.

[0016] Preferably, it further includes an air bladder and an extrusion column. The lower end of the push rod is provided with an air outlet and a first air passage. The lower end of the upper top plate is provided with a placement groove and a second air passage. The two ends of the first air passage are respectively connected to the air outlet and the second air passage. The end of the second air passage away from the first air passage is connected to the bottom of the placement groove. The air bladder is fixedly connected to the bottom of the placement groove. The opening of the air bladder is connected to the second air passage. The extrusion column is fixedly connected to the upper end of the upper mold and is used to extrude the air bladder.

[0017] By adopting the above technical solution, as the upper plate approaches the upper mold, the extrusion column extends into the placement groove to extrude the air bladder, and the gas pressure in the first air channel increases. When the push rod moves away from the lower mold, the air pressure generates a thrust on the product, making the product less likely to move with the push rod, which facilitates the separation of the push rod from the lower mold and improves demolding efficiency.

[0018] Preferably, the device further includes a ring body and a diaphragm, both of which are coaxially fixed to the inner wall of the air outlet. The diaphragm is located on the side of the ring body away from the first air passage, with one side of the diaphragm adhering to the ring body and the other side of the diaphragm coplanar with the end face of the push rod. The diaphragm has connecting gaps, the length direction of which is parallel to the diameter of the diaphragm. Multiple connecting gaps are provided, and the multiple connecting gaps are evenly spaced along the axis of the diaphragm, with each connecting gap passing through the center of the diaphragm.

[0019] By adopting the above technical solution, the diaphragm blocks the injection molding material from entering the first air passage. The air pressure difference causes the part of the diaphragm near the air outlet axis to move away from the ring body, pushing the product away from the push rod, increasing the connection gap, and facilitating the gas to flow out.

[0020] Preferably, it also includes a one-way valve, the outer wall of the upper top plate is provided with an air inlet, the air inlet is connected to the second air passage, and the one-way valve is fixedly connected to the inner wall of the air inlet.

[0021] By adopting the above technical solution, when the upper plate moves away from the upper mold, the air bladder recovers its deformation, and the air pressure difference allows air to enter through the air inlet, replenishing the gas in the air bladder and facilitating its next use.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. When the upper and lower molds are closed, the mold is injected into the cavity. After molding, the mold is opened and the upper mold moves upward away from the product. The push rod abuts against the product to fix it. After the insert moves away from the product, the push rod moves away from the product, and the ejector rod slides to eject the product, thus completing the product demolding. The product is not easily damaged, and the production quality of the product is improved.

[0024] 2. During the process of the insert detaching from the product, the upper top plate moves closer to the upper mold, the control block extends into the control groove, the second guide surface abuts against the first guide surface, and the sliding block moves away from the limit block. When the insert detaches from the product, the sliding block extends into the sliding groove, and the limit block can no longer obstruct the movement of the upper top plate. The upper mold drives the push rod away from the product, and the return spring causes the upper mold and lower mold to move closer to each other, that is, when the upper top plate moves away from the upper mold, the sliding block automatically returns to its original position and is embedded in the clearance groove.

[0025] 3. As the upper platen approaches the upper mold, the extrusion column extends into the placement groove to extrude the air bladder. The gas pressure in the first air channel increases. When the push rod moves away from the lower mold, the air pressure generates a thrust on the product, making the product less likely to move with the push rod. This facilitates the separation of the push rod from the lower mold and improves demolding efficiency. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of a high-toughness dust cover release structure.

[0027] Figure 2 This is a cross-sectional view of a high-toughness dust cover release structure, mainly used to show auxiliary components.

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Main body; 11. Upper mold; 111. Mounting port; 112. Sliding port; 113. Anti-detachment port; 114. Limiting port; 12. Lower mold; 121. Forming groove; 122. Ejector port; 13. Upper support block; 131. Receiving groove; 132. Connecting port; 14. Lower support block; 141. Ejector groove; 15. Insert; 151. Fixing port; 152. Abutment port; 16. Push rod; 161. Abutment block; 162. Air outlet; 163. First air passage; 17. Upper top plate; 171. 172. Sliding groove; 173. Control groove; 174. Placement groove; 175. Second air passage; 176. Air inlet; 18. Anti-detachment ring; 19. Compression spring; 20. Cavity; 21. Lower top plate; 22. Ejector rod; 3. Auxiliary components; 31. Sliding block; 311. Second guide surface; 32. Limiting block; 321. Clearance groove; 33. Control block; 331. First guide surface; 34. Reset spring; 35. Airbag; 36. Extrusion column; 37. Ring body; 38. Diaphragm; 381. Connecting gap; 39. One-way valve. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a high-toughness dust cover release structure. (Refer to...) Figure 1 The high-toughness dustproof sleeve demolding structure includes a main body 1 and auxiliary components 3. The main body 1 includes an upper mold 11, a lower mold 12, an upper support block 13, a lower support block 14, an insert 15, a push rod 16, an upper top plate 17, an anti-detachment ring 18, a compression spring 19, a lower top plate 21, and an ejector rod 22.

[0032] The upper mold 11 is located above the lower mold 12. The upper support block 13 is fixedly connected to the upper end of the upper mold 11, and the lower support block 14 is fixedly connected to the lower end of the lower mold 12. The lower end of the upper mold 11 is provided with an installation port 111, and the upper end of the upper mold 11 is provided with a sliding port 112. The sliding port 112 is coaxially connected to the installation port 111. The insert 15 is slidably connected to the inner wall of the installation port 111. The insert 15 is coaxially provided with a fixing port 151. The push rod 16 is slidably connected to the inner wall of the fixing port 151 and the inner wall of the sliding port 112.

[0033] Reference Figure 1 The lower end of the upper support block 13 is provided with a receiving groove 131, which is connected to the sliding port 112. The outer wall of the upper top plate 17 is slidably connected to the groove wall of the receiving groove 131. The upper end of the push rod 16 is fixedly connected to the lower end of the upper top plate 17. The inner wall of the fixing port 151 is coaxially provided with an abutment interface 152. The diameter of the abutment interface 152 increases as the height decreases. The outer wall of the push rod 16 is coaxially fixedly connected with an abutment block 161. The abutment interface 152 is used for the abutment block 161 to be embedded.

[0034] The inner wall of the sliding port 112 is coaxially provided with an anti-detachment port 113, which is located above the mounting port 111 and connects to it. The diameter of the anti-detachment port 113 is larger than that of the mounting port 111. An anti-detachment ring 18 is coaxially fixedly connected to the outer wall of the insert 15 and slidably connected to the inner wall of the anti-detachment port 113. The upper end face of the anti-detachment ring 18 is flush with the upper end face of the insert 15. The distance that the anti-detachment ring 18 can move is equal to the difference between the height of the anti-detachment port 113 and the thickness of the anti-detachment ring 18. The distance that the upper top plate 17 can move is equal to the difference between the height of the receiving groove 131 and the thickness of the upper top plate 17. The distance that the anti-detachment ring 18 can move is less than the distance that the upper top plate 17 can move.

[0035] Reference Figure 1 The inner wall of the sliding port 112 is coaxially provided with a limiting port 114. The lower end of the limiting port 114 is connected to the upper end of the anti-disengagement port 113. The diameter of the limiting port 114 is smaller than the diameter of the anti-disengagement port 113. The compression spring 19 is sleeved on the outer periphery of the push rod 16. The two ends of the compression spring 19 are respectively connected to the inner wall of the limiting port 114 facing downward and the upper end of the insert 15.

[0036] The upper end of the lower mold 12 is provided with a forming groove 121. When the upper mold 11 and the lower mold 12 are closed, the insert 15 extends into the forming groove 121, and the lower end of the push rod 16 abuts against the bottom of the forming groove 121. The outer wall of the insert 15, the outer wall of the push rod 16 and the inner wall of the forming groove 121 form a cavity 20. The bottom of the forming groove 121 is provided with a ejector port 122. The ejector port 122 penetrates the lower mold 12 vertically. There are multiple ejector ports 122, and the multiple ejector ports 122 are evenly spaced along the axis of the forming groove 121.

[0037] Reference Figure 1 The upper end of the lower support block 14 is provided with a top material groove 141, which is connected to the top material opening 122. The outer wall of the lower top plate 21 is slidably connected to the groove wall of the top material groove 141. The top material rod 22 is slidably connected to the inner wall of the top material opening 122. There are multiple top material rods 22, and each top material rod 22 is corresponding to a top material opening 122. The lower end of the top material rod 22 is fixedly connected to the upper end of the lower top plate 21.

[0038] Reference Figure 1 and Figure 2 The auxiliary component 3 includes a sliding block 31, a limiting block 32, a control block 33, a reset spring 34, an airbag 35, a squeezing column 36, a ring 37, a diaphragm 38, and a one-way valve 39.

[0039] The outer wall of the upper support block 13 is provided with a connecting port 132, which is connected to the receiving groove 131. The outer wall of the upper top plate 17 facing the connecting port 132 is provided with a sliding groove 171. The sliding block 31 is slidably connected to the groove wall of the sliding groove 171. The lower end of the limiting block 32 is fixedly connected to the outer wall of the lower mold 12. The upper end of the limiting block 32 is located on the side of the connecting port 132 away from the sliding groove 171. The outer wall of the limiting block 32 facing the upper mold 11 is provided with a relief groove 321, which is used for the sliding block 31 to extend into.

[0040] Reference Figure 2 The lower end of the top plate 17 is provided with a control groove 172, which is connected to the sliding groove 171. The control block 33 is fixedly connected to the upper end of the upper mold 11. The control groove 172 is used for the control block 33 to extend into. One end of the return spring 34 is fixedly connected to the bottom of the sliding groove 171, and the other end of the return spring 34 is fixedly connected to the sliding block 31. The upper end of the control block 33 is provided with a first guide surface 331, and the lower end of the sliding block 31 is provided with a second guide surface 311. The distance from the second guide surface 311 to the return spring 34 increases with the increase of height. The first guide surface 331 is parallel to the second guide surface 311, and the second guide surface 311 is used for the first guide surface 331 to abut against.

[0041] Reference Figure 1 and Figure 2 The lower end of the push rod 16 is provided with an air outlet 162. There are multiple air outlets 162, and each air outlet 162 is set in a corresponding manner to the ejector rod 22. The push rod 16 is provided with a first air passage 163. The lower end of the upper top plate 17 is provided with a placement groove 173. The upper top plate 17 is provided with a second air passage 174. The two ends of the first air passage 163 are respectively connected to the air outlet 162 and the second air passage 174. The end of the second air passage 174 away from the first air passage 163 is connected to the bottom of the placement groove 173. The air bag 35 is fixedly connected to the bottom of the placement groove 173. The opening of the air bag 35 is connected to the second air passage 174. The extrusion column 36 is fixedly connected to the upper end of the upper mold 11. The extrusion column 36 is used to extrude the air bag 35.

[0042] Reference Figure 2 and Figure 3 The ring body 37 and the diaphragm 38 are coaxially fixed to the inner wall of the air outlet 162. The diaphragm 38 is located on the side of the ring body 37 away from the first air passage 163. One side of the diaphragm 38 is attached to the ring body 37, and the other side of the diaphragm 38 is coplanar with the end face of the push rod 16. The diaphragm 38 is provided with a connecting gap 381. The length direction of the connecting gap 381 is parallel to the diameter of the diaphragm 38. There are multiple connecting gaps 381. The multiple connecting gaps 381 are evenly spaced along the axis of the diaphragm 38, and all connecting gaps 381 pass through the center of the diaphragm 38.

[0043] Reference Figure 1The lower end of the top plate 17 is provided with an air inlet 175, which is connected to the second air passage 174. A one-way valve 39 is fixedly connected to the inner wall of the air inlet 175, and the one-way valve 39 allows gas to flow into the second air passage 174 from the outside through the air inlet 175.

[0044] The implementation principle of the high-toughness dust cover release structure in this application embodiment is as follows: During the mold closing process of the upper mold 11 and the lower mold 12, the push rod 16 first contacts the bottom of the molding groove 121. The upper mold 11 continues to move downward, the distance between the upper top plate 17 and the upper mold 11 increases, the control block 33 slides into the control groove 172, the return spring 34 causes the sliding block 31 to embed into the avoidance groove 321, the extrusion column 36 moves away from the air bladder 35, air enters through the air inlet 175, the air bladder 35 recovers its deformation, the insert 15 abuts against the bottom of the molding groove 121, the upper mold 11 continues to move downward, the compression spring 19 contracts, and the upper mold 11 and the lower mold 12 finally close to form the cavity 20. After injection molding, during the mold opening process of the upper mold 11 and the lower mold 12, the limiting block 32... The sliding block 31 is limited, thereby limiting the upper top plate 17. The upper mold 11 moves upward, and the compression spring 19 causes the insert 15 to abut against the product. When the anti-detachment ring 18 abuts against the inner wall facing upward of the anti-detachment opening 113, the upper mold 11 continues to move upward, the push rod 16 remains stationary, and the insert 15 moves upward synchronously. When the insert 15 detaches from the product, the control block 33 abuts against the sliding block 31, causing the return spring 34 to contract. The sliding block 31 slides into the sliding groove 171, the extrusion column 36 extrudes the air bladder 35, and the air pressure in the first air passage 163 increases, which tends to push the product away from the push rod 16. The upper mold 11 drives the push rod 16 to move upward, the push rod 16 moves away from the push rod 16, and the lower top plate 21 drives the ejector rod 22 to move upward, completing the product demolding.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-toughness dust cover release structure, characterized in that: The assembly includes an upper mold (11), a lower mold (12), an insert (15), a push rod (16), and an ejector rod (22). The upper mold (11) is located above the lower mold (12). The lower end of the upper mold (11) has an installation port (111), and the upper end of the upper mold (11) has a sliding port (112). The sliding port (112) is coaxially connected to the installation port (111). The insert (15) is slidably connected to the inner wall of the installation port (111). The insert (15) has a fixed port (151) coaxially connected to the inner wall of the installation port (111). The push rod (16) slides... The upper end of the lower mold (12) is provided with a forming groove (121) connected to the inner wall of the fixed opening (151) and the inner wall of the sliding opening (112). When the upper mold (11) and the lower mold (12) are closed, the insert (15) extends into the forming groove (121). The outer wall of the insert (15), the outer wall of the push rod (16) and the inner wall of the forming groove (121) form a cavity (20). The bottom of the forming groove (121) is provided with a top material opening (122). The top material rod (22) is slidably connected to the inner wall of the top material opening (122). It also includes a compression spring (19), and the inner wall of the sliding port (112) is coaxially provided with a limiting port (114). The lower end of the limiting port (114) is connected to the upper end of the anti-disengagement port (113). The diameter of the limiting port (114) is smaller than the diameter of the anti-disengagement port (113). The compression spring (19) is sleeved on the outer periphery of the push rod (16). The two ends of the compression spring (19) are respectively connected to the inner wall facing downward of the limiting port (114) and the upper end of the insert (15). It also includes an upper support block (13), an upper top plate (17), a sliding block (31), and a limiting block (32). The upper support block (13) is fixedly connected to the upper end of the upper mold (11). The lower end of the upper support block (13) is provided with a receiving groove (131), which is connected to the sliding port (112). The upper top plate (17) is slidably connected to the groove wall of the receiving groove (131). The upper end of the push rod (16) is fixedly connected to the upper top plate (17). The outer wall of the upper support block (13) is provided with a connecting port (132). The upper top plate (17) is connected to the receiving groove (131). The outer wall of the upper top plate (17) facing the connecting opening (132) is provided with a sliding groove (171). The sliding block (31) is slidably connected to the inner wall of the sliding groove (171). The lower end of the limiting block (32) is fixedly connected to the outer wall of the lower mold (12). The upper end of the limiting block (32) is located on the side of the connecting opening (132) away from the sliding groove (171). The outer wall of the limiting block (32) facing the upper mold (11) is provided with a relief groove (321). The relief groove (321) is used for the sliding block (31) to extend into. It also includes a control block (33) and a reset spring (34). The lower end of the upper top plate (17) is provided with a control groove (172), which is connected to the sliding groove (171). The control block (33) is fixedly connected to the upper end of the upper mold (11). The control groove (172) is used for the control block (33) to extend into. One end of the reset spring (34) is connected to the bottom of the sliding groove (171), and the other end of the reset spring (34) is connected to the sliding block (31). The upper end of the control block (33) is provided with a first guide surface (331), and the lower end of the sliding block (31) is provided with a second guide surface (311). The distance from the second guide surface (311) to the reset spring (34) increases with the increase of height. The second guide surface (311) is used for the first guide surface (331) to abut. It also includes an airbag (35) and an extrusion column (36). The lower end of the push rod (16) is provided with an air outlet (162). The push rod (16) is provided with a first air passage (163). The lower end of the upper top plate (17) is provided with a placement groove (173). The upper top plate (17) is provided with a second air passage (174). The two ends of the first air passage (163) are respectively connected to the air outlet (162) and the second air passage (174). The end of the second air passage (174) away from the first air passage (163) is connected to the bottom of the placement groove (173). The airbag (35) is fixedly connected to the bottom of the placement groove (173). The opening of the airbag (35) is connected to the second air passage (174). The extrusion column (36) is fixedly connected to the upper end of the upper mold (11). The extrusion column (36) is used to extrude the airbag (35).

2. The high-toughness dustproof sleeve demolding structure according to claim 1, characterized in that: It also includes an anti-detachment ring (18), and the inner wall of the sliding port (112) is coaxially provided with an anti-detachment port (113). The anti-detachment port (113) is connected to the mounting port (111). The diameter of the anti-detachment port (113) is larger than the diameter of the mounting port (111). The anti-detachment ring (18) is coaxially fixedly connected to the outer wall of the insert (15), and the anti-detachment ring (18) is slidably connected to the inner wall of the anti-detachment port (113).

3. The high-toughness dustproof sleeve demolding structure according to claim 1, characterized in that: It also includes a ring (37) and a diaphragm (38), both of which are coaxially fixed to the inner wall of the air outlet (162). The diaphragm (38) is located on the side of the ring (37) away from the first air passage (163). One side of the diaphragm (38) is attached to the ring (37), and the other side of the diaphragm (38) is coplanar with the end face of the push rod (16). The diaphragm (38) is provided with a connecting gap (381). The length direction of the connecting gap (381) is parallel to the diameter of the diaphragm (38). There are multiple connecting gaps (381), which are evenly spaced along the axis of the diaphragm (38). All connecting gaps (381) pass through the center of the diaphragm (38).

4. The high-toughness dust cover release structure according to claim 3, characterized in that: It also includes a one-way valve (39), and the outer wall of the upper top plate (17) is provided with an air inlet (175), the air inlet (175) is connected to the second air passage (174), and the one-way valve (39) is fixedly connected to the inner wall of the air inlet (175).

Images