A self-ejecting oxygen mask release mold

Abstract

The invention discloses a self-ejection oxygen mask demoulding mold, which relates to the field of injection molds, including a base, a lower mold, an upper mold and an injection port, wherein the lower mold is arranged at the middle and upper part of the base, and an upper mold is arranged above the lower mold, and an injection port is connected to the upper part of the upper mold, a guide rod is passed through the outer side of the upper mold, a nested connection is formed between the guide rod and the upper mold, and the lower end of the guide rod is fixedly connected to the base, a mold closing control mechanism is arranged on the outer side of the upper mold to control the movement of the upper mold, a detachable connection is formed between the lower mold and the base, and a demoulding port is opened at the bottom of the lower mold, and the lower part of the demoulding port is designed in an expanded structure. The self-ejection oxygen mask demoulding mold assists the demoulding of the product by setting the demoulding port and a sealing plug, and the sealing plug descends to open the demoulding port during demoulding, and the product is demoulded by blowing airflow to the demoulding port, which has a better protection effect on the product than the ejection demoulding of the product, and is not easy to damage the product.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to a self-ejection type oxygen mask demoulding mold. Background Art

[0002] When processing the oxygen mask, it can be shaped by the mold, and the product can be taken out by demolding after cooling. For example, the application number is CN202220388784.X, which was disclosed on July 1, 2022, and is easy to demold for the production of oxygen masks. The upper side of the lower mold bracket is slidably connected with the lower mold, and two structurally identical disassembly and assembly fixing mechanisms are symmetrically arranged between the lower mold bracket and the lower mold. An upper mold is arranged directly above the lower mold, and a mold cavity is opened on the upper side of the lower mold, and two air holes are symmetrically opened at the two end positions on the bottom side of the mold cavity. The utility model controls the air cylinder to drive the air hole plug to separate from the air hole, and then uses the high-pressure air pump to draw high-pressure air into the inside of the air hole, and uses the high-pressure gas to apply pressure to the molded part, so as to facilitate the demoulding of the molded part. Compared with the traditional demoulding using a ejector pin, the compressed air will not cause scratches on the surface of the molded part when applying pressure to the molded part. Therefore, when demoulding the molded part with a lower surface hardness, it can better protect the molded part and prevent the molded part from being scratched; the application number is CN201910448298.5, and a mold for a medical nebulizer mask disclosed on July 19, 2019, includes an upper module , lower module, base, control cabinet, an upper mold column is arranged at the upper end of the upper module, a shaping mold is arranged at one side of the upper module, a spring is arranged at the lower end of the shaping mold, a guide column is arranged inside the shaping mold, a telescopic motor is arranged at one side of the shaping mold, a telescopic rod is arranged at the lower end of the telescopic motor, a rotating motor is arranged at the lower end of the telescopic rod, a hook is arranged at the lower end of the rotating motor, a cooler is arranged at the front end of the upper module, the lower module is arranged below the upper module, the base is arranged at the lower end of the lower module, the control cabinet is arranged at the front end of the base, and a control button is arranged at the front end of the control cabinet. Beneficial effects are: the present invention utilizes exhaust holes to discharge gas in the working process, and utilizes hooks to clamp the upper module and the lower module, and utilizes a cooler to improve the working efficiency of the mask;

[0003] At present, when demolding a mask, the use of ejector pins and other methods for demolding can easily cause damage to the product. If gas blowing is used for demolding, a complete blowing control-related structure needs to be set up in a single mold, which increases the difficulty and cost of mold production. In addition, when changing different molds, the entire blowing structure also needs to be replaced, reducing the convenience and flexibility of the product. Summary of the invention

[0004] The purpose of the present invention is to provide a self-ejection oxygen mask demoulding mold to solve the problem proposed in the above background technology that when the current mold is demoulding the mask, it is easy to cause damage to the product by using a demoulding method such as an ejector pin, and when the mold is demoulded by gas blowing, a complete blowing control related structure needs to be set in a single mold, which leads to increased difficulty in mold production and increased production costs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-ejection oxygen mask demoulding mold, comprising a base, a lower mold, an upper mold and an injection port, the lower mold is arranged at the middle and upper part of the base, and the upper mold is arranged above the lower mold, and the upper part of the upper mold is connected with the injection port, the outer side of the upper mold is penetrated by a guide rod, the guide rod and the upper mold are nested, and the lower end of the guide rod is fixedly connected to the base, the outer side of the upper mold is provided with a mold closing control mechanism to control the movement of the upper mold, the lower mold and the base are detachably connected, and a demoulding port is opened at the bottom of the lower mold, and the lower part of the demoulding port is designed in an enlarged structure, a sealing plug is arranged inside the demoulding port, and the upper end of the sealing plug is in contact with the demoulding port to close the demoulding port The upper opening is covered, a magnetic rod is fixed under the sealing plug, and an up-and-down sliding structure is formed between the magnetic rod and the lower mold, and a movable plate is arranged under the magnetic rod, the movable plate is located inside the base, and an adsorption magnet is arranged inside the movable plate, the adsorption magnet and the magnetic rod attract each other to control the movement of the magnetic rod, an automatic control mechanism is arranged on the outer side of the movable plate, and the movable plate is automatically controlled to move upward after the mold is closed, an air blowing pipe is arranged inside the demolding port, and the lower end of the air blowing pipe passes through the lower surface of the lower mold and forms an up-and-down sliding structure between the lower mold, and the lower end of the air blowing pipe is fixedly connected to the base, and the lower end of the air blowing pipe is connected to a connecting groove, and the end of the connecting groove is connected to a connecting pipe for connecting to an external air supply mechanism.

[0006] To further optimize the technical solution, the mold clamping control mechanism includes a clamping block, a rotating shaft, a driving block, a driving mechanism and a fixed block;

[0007] The clamp block is arranged on the left side of the upper die, and the end of the clamp block is designed in an arc-shaped structure;

[0008] A rotating shaft, rotatably mounted on the left side of the clamping block;

[0009] A driving block connected to the rotating shaft to provide support therefor;

[0010] A driving mechanism connected to the driving block to control the movement of the driving block;

[0011] The fixed block is fixed on the left side of the upper die, and the fixed block and the clamping block are slidably connected.

[0012] To further optimize the technical solution, the driving mechanism includes a threaded rod, a mounting block and a motor;

[0013] A threaded rod passes through the drive block and forms a threaded connection between the drive blocks;

[0014] The mounting block is fixed on the top of the base, the driving block is located inside the mounting block and between the mounting block, a vertical sliding structure is formed, and a rotation connection is formed between the mounting block and the threaded rod;

[0015] The motor is connected to the threaded rod to control the rotation of the threaded rod.

[0016] To further optimize the technical solution, the automatic control mechanism includes a first spring, a connecting plate and a trigger mechanism;

[0017] A first spring is arranged above the movable plate to provide a downward thrust for the movable plate, and an up-and-down sliding structure is formed between the movable plate and the base;

[0018] A connecting plate, fixed on the side of the movable plate to control the movement of the movable plate;

[0019] The trigger mechanism triggers the movement of the connecting plate when the mold is closed.

[0020] To further optimize the technical solution, the trigger mechanism includes a transmission gear and a control panel;

[0021] The transmission gear is rotatably mounted inside the base, and a meshing connection is formed between the transmission gear and the connecting plate;

[0022] The control plate is arranged on the outside of the transmission gear, and the control plate and the connecting plate are arranged opposite to each other, and a meshing connection is formed between the control plate and the transmission gear, and the upper end of the control plate passes through the upper surface of the base.

[0023] To further optimize the technical solution, the upper end of the control plate is connected to a second spring, and the upper end of the second spring is fixed with a contact plate to buffer the extrusion of the upper die.

[0024] To further optimize the technical solution, a front-to-back sliding structure is formed between the adsorption magnet and the movable plate, and an operating plate is fixed to the front end of the adsorption magnet, and the movement of the adsorption magnet is controlled by the operating plate.

[0025] To further optimize the technical solution, a limiting groove is provided on the side of the lower mold, and a limiting block is arranged inside the base. A locking structure is formed between the limiting block and the limiting groove, and the upper part of the limiting block is designed with an arc-shaped structure, and a third spring is fixed on the front side of the limiting block to provide thrust for the limiting block, and a release mechanism is connected to the lower part of the limiting block.

[0026] To further optimize the technical solution, the release mechanism includes a linkage rod, the lower end of which is fixed below the limit block, and a front-to-rear sliding structure is formed between the linkage rod and the base, and the linkage rod passes through the operating panel and forms an up-and-down sliding structure between the operating panels.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The demoulding of the product is assisted by the demoulding of the demoulding port and the sealing plug. When demoulding, the sealing plug is lowered to open the demoulding port, and the product is demoulded by blowing air to the demoulding port. Compared with the demoulding by lifting the product, the product has a better protection effect and is not easy to damage the product.

[0029] The demoulding port is set on the lower die, and the mechanism for controlling the movement of the sealing plug is directly arranged inside the base. The disassembly of the lower die does not affect the subsequent use of the mechanism, which reduces the layout of the structure inside the lower die, reduces its cost, and also enables the lower die to be flexibly replaced and adjusted;

[0030] The movement of the sealing plug can be controlled by the movement of the control panel, and the control panel can be controlled by the closing of the upper mold, so that the demoulding port is automatically sealed after the mold is closed, and the demoulding port is automatically opened after the mold is opened, without the need for additional operations, and is more convenient to use;

[0031] The movement of the upper die is guided by the guide rod, and the movement of the upper die can be controlled by the clamp block. The clamp block can release the connection with the fixed block by rotating, so that the upper die can slide directly off the guide rod, which is convenient for the replacement of the upper die.

[0032] By controlling the movement of the magnetic block, its attraction to the magnetic rod can be released, which facilitates the disassembly of the lower mold. When the magnetic block releases its attraction to the magnetic rod, it can simultaneously drive the limit block to move, thereby releasing the connection between the limit block and the limit groove, so that the lower mold can be taken out of the base for replacement, thereby improving the ease of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 It is a side view structural schematic diagram of the present invention;

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower mold of the present invention;

[0036] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper mold of the present invention;

[0037] Figure 5 This is a schematic diagram of the main cross-sectional structure of the installation block of the present invention;

[0038] Figure 6It is a schematic diagram of the top view of the structure of the base of the present invention;

[0039] Figure 7 This is a schematic diagram of the main cross-sectional structure of the base of the present invention;

[0040] Figure 8 It is a schematic diagram of the side section structure of the base of the present invention;

[0041] Fig. 9 This is a schematic diagram of the main cross-sectional structure of the air blowing pipe of the present invention;

[0042] Fig.10 It is a schematic diagram of the top-sectional structure of the movable plate of the present invention.

[0043] In the figure: 1. base; 2. lower mold; 3. upper mold; 4. injection port; 5. guide rod; 6. clamping block; 7. rotating shaft; 8. driving block; 9. threaded rod; 10. mounting block; 11. motor; 12. fixing block; 13. demoulding port; 14. sealing plug; 15. magnetic rod; 16. first spring; 17. movable plate; 18. connecting plate; 19. transmission gear; 20. control board; 21. second spring; 22. contact plate; 23. blowing pipe; 24. connecting groove; 25. connecting pipe; 26. adsorption magnet; 27. operating board; 28. limit groove; 29. ​​limit block; 30. third spring; 31. linkage rod. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-Figure 10 The present invention provides the following technical solution: a self-ejection oxygen mask demoulding mold, comprising a base 1, a lower mold 2, an upper mold 3 and an injection port 4, wherein the lower mold 2 is arranged at the middle and upper part of the base 1, and the upper mold 3 is arranged above the lower mold 2, and the upper part of the upper mold 3 is connected to the injection port 4; Embodiment 1

[0046] The invention provides a technical solution, which discloses that a guide rod 5 runs through the outer side of the upper mold 3, the guide rod 5 and the upper mold 3 form a nested connection, and the lower end of the guide rod 5 is fixedly connected to the base 1, a mold closing control mechanism is arranged on the outer side of the upper mold 3 to control the movement of the upper mold 3, a detachable connection is formed between the lower mold 2 and the base 1, and a demolding port 13 is opened at the bottom of the lower mold 2, and the lower part of the demolding port 13 is designed in an enlarged structure, a sealing plug 14 is arranged inside the demolding port 13, and the upper end of the sealing plug 14 is fitted with the demolding port 13 to cover the upper opening of the demolding port 13, a magnetic rod 15 is fixed below the sealing plug 14, and an up and down sliding structure is formed between the magnetic rod 15 and the lower mold 2, A movable plate 17 is provided below the magnetic rod 15, the movable plate 17 is located inside the base 1, and an adsorption magnet 26 is provided inside the movable plate 17, the adsorption magnet 26 and the magnetic rod 15 attract each other to control the magnetic rod 15 to move, an automatic control mechanism is provided outside the movable plate 17, and the movable plate 17 is automatically controlled to move upward after the mold is closed, and an air blowing pipe 23 is provided inside the demoulding port 13, and the lower end of the air blowing pipe 23 passes through the lower surface of the lower mold 2 and the lower mold 2 to form an up and down sliding structure, and the lower end of the air blowing pipe 23 is fixedly connected to the base 1, and the lower end of the air blowing pipe 23 is connected to a connecting groove 24, and the end of the connecting groove 24 is connected to a connecting pipe 25 for connecting to an external air supply mechanism;

[0047] When in use, the upper mold 3 can be controlled to move downward to close the mold, and raw materials can be added through the injection port 4. At the same time, the connecting pipe 25 can be connected to the external air supply mechanism. After the subsequent product is cooled and formed, the upper mold 3 can be controlled to move upward to open the mold, and the sealing plug 14 can be moved downward to open the demolding port 13. At this time, the air in the connecting pipe 25 can pass through the connecting groove 24 and the blowing pipe 23 to exit the demolding port 13, blow the product above the lower mold 2, assist its demolding, and avoid damage to the product during demolding. Embodiment 2

[0048] On the basis of the first embodiment, a clamping control mechanism is disclosed, which includes a clamping block 6, a rotating shaft 7, a driving block 8, a driving mechanism and a fixed block 12. The clamping block 6 is arranged on the left side of the upper mold 3, and the end of the clamping block 6 is designed in an arc-shaped structure. The rotating shaft 7 is rotatably installed on the left side of the clamping block 6. The driving block 8 is connected to the rotating shaft 7 to provide support for it. The driving mechanism is connected to the driving block 8 to control the movement of the driving block 8. The fixed block 12 is fixed to the left side of the upper mold 3, and the fixed block 12 and the clamping block 6 are slidably connected. The driving mechanism includes a threaded rod 9, a mounting block 10 and a motor 11. The threaded rod 9 passes through the driving block 8 and forms a threaded connection between the driving block 8. The mounting block 10 is fixed above the base 1. The driving block 8 is located inside the mounting block 10 and between the mounting block 10 to form an up and down sliding structure, and the mounting block 10 and the threaded rod 9 form a rotational connection. The motor 11 is connected to the threaded rod 9 to control the rotation of the threaded rod 9.

[0049] When controlling the movement of the upper mold 3, the threaded rod 9 can be controlled to rotate by the motor 11. The threaded rod 9 drives the driving block 8 to move through the threaded connection between the threaded rod 9 and the driving block 8. The driving block 8 drives the fixed block 12 and the upper mold 3 to move through the clamping block 6, thereby providing control over the movement of the upper mold 3. At the same time, the upper mold 3 slides on the outside of the guide rod 5. When the upper mold 3 needs to be replaced, the clamping block 6 can be rotated to release the connection between the clamping block 6 and the fixed block 12. Then the upper mold 3 can be moved and removed from above the guide rod 5. Subsequently, a new upper mold 3 can be replaced and inserted into the guide rod 5 to re-control the clamping block 6 and the fixed block 12 for connection. Embodiment 3

[0050] On the basis of the first embodiment, an automatic control mechanism is disclosed, which includes a first spring 16, a connecting plate 18 and a trigger mechanism. The first spring 16 is arranged above the movable plate 17 to provide a downward thrust for the movable plate 17, and an up and down sliding structure is formed between the movable plate 17 and the base 1. The connecting plate 18 is fixed to the side of the movable plate 17 to control the movement of the movable plate 17. The trigger mechanism triggers the movement of the connecting plate 18 when the mold is closed. The trigger mechanism includes a transmission gear 19 and a control plate 20. The transmission gear 19 is rotatably mounted inside the base 1, and a meshing connection is formed between the transmission gear 19 and the connecting plate 18. The control plate 20 is arranged on the outside of the transmission gear 19, and the control plate 20 and the connecting plate 18 are arranged relative to each other, and a meshing connection is formed between the control plate 20 and the transmission gear 19. The upper end of the control plate 20 passes through the upper surface of the base 1, and the upper end of the control plate 20 is connected to a second spring 21 , and a contact plate 22 is fixed to the upper end of the second spring 21 to buffer the extrusion of the upper mold 3, a front-to-back sliding structure is formed between the adsorption magnet 26 and the movable plate 17, and an operating plate 27 is fixed to the front end of the adsorption magnet 26, and the adsorption magnet 26 is controlled to move by the operating plate 27, a limiting groove 28 is provided on the side of the lower mold 2, and a limiting block 29 is arranged inside the base 1, a clamping structure is formed between the limiting block 29 and the limiting groove 28, and the upper part of the limiting block 29 is designed in an arc shape, and a third spring 30 is fixed to the front side of the limiting block 29 to provide thrust for the limiting block 29, and a release mechanism is connected to the lower part of the limiting block 29, and the release mechanism includes a linkage rod 31, the lower end of the linkage rod 31 is fixed to the lower part of the limiting block 29, and a front-to-back sliding structure is formed between the linkage rod 31 and the base 1, and the linkage rod 31 passes through the operating plate 27 and forms an up and down sliding structure between the operating plate 27;

[0051] When the upper mold 3 is controlled to close the mold downward, the upper mold 3 will press the control plate 20 downward to move, so that the control plate 20 drives the transmission gear 19 to rotate through the meshing between the control plate 20 and the transmission gear 19, and the transmission gear 19 drives the connecting plate 18 and the movable plate 17 to move upward through the meshing between the connecting plate 18. The movable plate 17 will push the sealing plug 14 to move upward through the magnetic rod 15, so that the sealing plug 14 blocks the demoulding port 13, and then injection molding can be performed. After the subsequent product is formed, the upper mold 3 is controlled to move upward. After the upper mold 3 moves, the second spring 21 will push the movable plate 17 to move downward. , so that the adsorption magnet 26 attracts the magnetic rod 15 to move downward, driving the sealing plug 14 to move, opening the demolding port 13, and allowing the air blowing pipe 23 to blow the product to demold. When the lower mold 2 needs to be disassembled later, the operating plate 27 can be pulled to drive the limit block 29 to move through the linkage rod 31, thereby releasing the connection between the limit block 29 and the limit groove 28. At the same time, the adsorption magnet 26 moves and the position of the magnetic rod 15 is staggered, releasing the attraction effect on the magnetic rod 15, and then the lower mold 2 can be removed from the base 1, and the air blowing pipe 23 is disconnected from the demolding port 13.

[0052] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-ejection oxygen mask demoulding mold, comprising a base (1), a lower mold (2), an upper mold (3) and an injection port (4), wherein the lower mold (2) is arranged at the upper middle portion of the base (1), an upper mold (3) is arranged above the lower mold (2), and the upper portion of the upper mold (3) is connected to the injection port (4); Features: A guide rod (5) passes through the outer side of the upper mold (3), and a nested connection is formed between the guide rod (5) and the upper mold (3), and the lower end of the guide rod (5) is fixedly connected to the base (1). A mold closing control mechanism is arranged on the outer side of the upper mold (3) to control the movement of the upper mold (3). A detachable connection is formed between the lower mold (2) and the base (1), and a demoulding opening (13) is provided at the bottom of the lower mold (2), and the lower part of the demoulding opening (13) is designed in an enlarged structure. A sealing plug (14) is arranged inside the demoulding opening (13), and the upper end of the sealing plug (14) is fitted with the demoulding opening (13) to cover the upper opening of the demoulding opening (13). A magnetic rod (15) is fixed below the sealing plug (14), and an up-and-down sliding structure is formed between the magnetic rod (15) and the lower mold (2), and the magnetic rod (15) A movable plate (17) is arranged below the lower mold (15), the movable plate (17) is located inside the base (1), and an adsorption magnet (26) is arranged inside the movable plate (17), the adsorption magnet (26) and the magnetic rod (15) attract each other to control the magnetic rod (15) to move, an automatic control mechanism is arranged outside the movable plate (17), and the movable plate (17) is automatically controlled to move upward after the mold is closed, an air blowing pipe (23) is arranged inside the demoulding port (13), and the lower end of the air blowing pipe (23) passes through the lower surface of the lower mold (2) and forms an up and down sliding structure between the lower mold (2), and the lower end of the air blowing pipe (23) is fixedly connected to the base (1), and the lower end of the air blowing pipe (23) is connected to a connecting groove (24), and the end of the connecting groove (24) is connected to a connecting pipe (25) for connecting to an external air supply mechanism; A front-to-rear sliding structure is formed between the adsorption magnet (26) and the movable plate (17), and an operating plate (27) is fixed to the front end of the adsorption magnet (26), and the movement of the adsorption magnet (26) is controlled by the operating plate (27); A limiting groove (28) is provided on the side of the lower mold (2), a limiting block (29) is provided inside the base (1), a locking structure is formed between the limiting block (29) and the limiting groove (28), and the upper part of the limiting block (29) is designed as an arc-shaped structure, and a third spring (30) is fixed on the front side of the limiting block (29) to provide thrust for the limiting block (29), and a release mechanism is connected to the lower part of the limiting block (29); The release mechanism comprises a linkage rod (31), the lower end of the linkage rod (31) being fixed below the limit block (29), a front-rear sliding structure being formed between the linkage rod (31) and the base (1), and an up-and-down sliding structure being formed between the linkage rod (31) and the operating plate (27).

2. A self-ejection oxygen mask demoulding mold according to claim 1, characterized in that: The mold clamping control mechanism comprises a clamping block (6), a rotating shaft (7), a driving block (8), a driving mechanism and a fixed block (12); A clamping block (6) is arranged on the left side of the upper mold (3), and the end of the clamping block (6) is designed to be an arc-shaped structure; A rotating shaft (7) is rotatably mounted on the left side of the clamping block (6); A driving block (8) is connected to the rotating shaft (7) to provide support therefor; A driving mechanism connected to the driving block (8) to control the movement of the driving block (8); The fixed block (12) is fixed on the left side of the upper mold (3), and the fixed block (12) and the clamping block (6) are slidably connected.

3. A self-ejection oxygen mask demoulding mold according to claim 2, characterized in that: The driving mechanism comprises a threaded rod (9), a mounting block (10) and a motor (11); A threaded rod (9) passes through the driving block (8) and forms a threaded connection between the driving block (8); The mounting block (10) is fixed above the base (1), the driving block (8) is located inside the mounting block (10) and between the mounting block (10) to form an up-and-down sliding structure, and the mounting block (10) and the threaded rod (9) are rotatably connected; The motor (11) is connected to the threaded rod (9) to control the rotation of the threaded rod (9).

4. A self-ejection oxygen mask demoulding mold according to claim 1, characterized in that: The automatic control mechanism comprises a first spring (16), a connecting plate (18) and a trigger mechanism; A first spring (16) is arranged above the movable plate (17) to provide a downward thrust for the movable plate (17), and an up-and-down sliding structure is formed between the movable plate (17) and the base (1); A connecting plate (18) is fixed to the side of the movable plate (17) to control the movement of the movable plate (17); The trigger mechanism triggers the movement of the connecting plate (18) when the mold is closed.

5. A self-ejection oxygen mask demoulding mold according to claim 4, characterized in that: The trigger mechanism comprises a transmission gear (19) and a control panel (20); A transmission gear (19) is rotatably mounted inside the base (1), and a meshing connection is formed between the transmission gear (19) and the connecting plate (18); The control plate (20) is arranged outside the transmission gear (19), and the control plate (20) and the connecting plate (18) are arranged opposite to each other, and a meshing connection is formed between the control plate (20) and the transmission gear (19), and the upper end of the control plate (20) penetrates the upper surface of the base (1).

6. A self-ejection oxygen mask demoulding mold according to claim 5, characterized in that: The upper end of the control plate (20) is connected to a second spring (21), and the upper end of the second spring (21) is fixed with a contact plate (22) to buffer the extrusion of the upper die (3).

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