A support device for a mask with a face seal

Abstract

The application provides a supporting device for a face-seal mask, which comprises a base, a lifting seat, a supporting seat and a lifting head assembly; during the first stage of lifting, the lifting head is inserted into the groove after passing through the lifting seat during the lifting process; during the second stage of lifting, the lifting head drives the lifting seat to ascend relative to the base during the lifting process, so that the two supporting seats enter the internal space of the face-seal mask; during the third stage of lifting, the lifting seat is arranged stationary relative to the base, the height of the lifting seat is in an unchanged state, the lifting head further ascends and drives the two supporting seats to move away from each other during the lifting process, so that the two supporting seats contact the to-be-welded part of the face-seal mask, and the multi-stage lifting of the lifting head is realized, thereby facilitating the movement of the two supporting seats away from each other through the lifting of the lifting head, and the structure of the supporting device for the face-seal mask is simplified.

Description

Technical Field

[0001] This utility model relates to the technical field of support devices for face masks with face seals, and more particularly to a support device for face masks with face seals. Background Technology

[0002] With the development of technology, face-sealed masks are gradually being used in people's lives. Face-sealed masks include a mask body and a face seal. The face seal extends outward along the inner wall of the mask body and can fit the user's face, improving the dust protection effect. The support device of the face-sealed mask is used to open the part of the face-sealed mask to be welded.

[0003] In the existing technology, the existing support device for face-sealed masks includes a base, a lifting seat, a support seat, a lifting head, and multiple power modules. The lifting seat is raised and lowered relative to the base through a corresponding power module. The support seat is slidably connected to the lifting seat. The lifting head is raised and lowered relative to the lifting seat through a corresponding power module. During the rising process, the lifting head drives the two support seats to move away from each other. However, multiple power modules are required to work together to drive the two support seats away from each other, which makes the structure of the existing support device for face-sealed masks relatively complex. Utility Model Content

[0004] The purpose of this utility model is to provide a support device for a face mask with a face seal. A lifting seat is vertically and scalably connected to a base; two support seats are slidably connected to the lifting seat, and the two support seats move closer to each other or further apart during sliding relative to the lifting seat; a first spring connects the two support seats and the support seat is subjected to the elastic force of the first spring; a groove is formed between the two support seats; the lifting head assembly includes a lifting head, which is vertically and scalably connected to the base. During the lifting process, the lifting head can pass through the base and be inserted into the groove; during the first stage of the lifting process, the lifting head passes through the lifting seat and is inserted into the groove; during the second stage of the lifting process, the lifting head... During the initial lifting phase, the lifting head raises the lifting seat relative to the base, allowing the two support seats to enter the internal space of the face-sealed mask. In the third stage of lifting, the lifting seat remains stationary relative to the base, maintaining a constant height. The lifting head then rises further, moving the two support seats away from each other, allowing them to contact the part of the face-sealed mask to be welded. This multi-stage lifting of the lifting head facilitates moving the two support seats away from each other, avoiding the need for multiple power models and simplifying the structure of the support device for the face-sealed mask.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support device for a face mask with a face seal, comprising: Base; A lifting seat is connected to the base in a height-adjustable manner; A support base is slidably connected to the lifting seat. There are two support bases, which move closer to each other or move away from each other during sliding relative to the lifting seat. A first spring is connected between the two support bases and the support base is subjected to the elastic force of the first spring. A groove is formed between the two support bases. A lifting head assembly includes a lifting head that is elliptically connected to the base, the lifting head being able to pass through the base during lifting and being inserted into the groove; During the first stage of the lifting process, the lifting head is inserted into the groove after passing through the lifting seat. During the second stage of the lifting process, the lifting head drives the lifting seat to rise relative to the base, so that the two support seats enter the internal space of the face-sealed mask. During the third stage of the lifting head's ascent, the lifting seat is stationary relative to the base, and the height of the lifting seat remains constant. The lifting head rises further, and during the ascent, it drives the two support seats to move away from each other, so that the two support seats contact the part of the mask with the face seal to be welded.

[0006] Optionally, the lifting head assembly further includes a first lifting module, the connecting end of which is connected to the base; the lifting end of the first lifting module is connected to the lifting head, and drives the lifting head to sequentially pass through the through hole of the lifting seat, the groove and the space between the two support seats; the first lifting module is a cylinder, a hydraulic cylinder or a linear motion module.

[0007] Optionally, both of the support seats are connected to rollers, both of the rollers are close to the groove, and are in contact with each other during the first and second stages of the lifting head's ascent. The lifting head is arranged in an inverted V shape. The two opposite side walls of the lifting head can contact the two rollers. At the same time, the force exerted by the lifting head on the two rollers is less than the rebound force between the two support seats, so that the two rollers maintain contact during the first stage of the lifting process and the second stage of the lifting process. The lifting head can drive the support seats and the lifting seat to rise.

[0008] Optionally, the lifting head is further provided with a vertical part, which is arranged in the vertical direction and can make rolling contact with the corresponding roller.

[0009] Optionally, the base is provided with multiple linear bearings; The lifting seat is connected to a plurality of first cylindrical shafts; the plurality of first cylindrical shafts are arranged relative to the corresponding linear bearings and are threaded through the corresponding linear bearings; At least one of the first cylindrical shafts is connected to a limiting seat, which is fixedly connected to the first cylindrical shaft and located on the lower side of the base; As the lifting seat rises, the limiting seat gradually approaches the base and contacts the base at the beginning of the third stage of the lifting head's upward process. This ensures that the support seat remains at the same height difference with the base during the third stage of the lifting head's upward process. The support seat is stationary relative to the base, while the lifting head continues to rise, causing the two support seats to move away from each other.

[0010] Optionally, the limiting seat restricts the further rise of the lifting seat when it contacts the base; the limiting seat covers the corresponding linear bearing when it contacts the base.

[0011] Optionally, the support base is located above the lifting seat and is slidably connected to the upper side wall of the lifting seat; The support base includes a sliding body and a support portion; the support portion is connected to the sliding body, and the sliding body is slidably connected to the upper side wall of the lifting base; the support portion is connected to a corresponding roller, which is rotatably connected to the support portion; With the two supports facing away from each other, the ends of the supports can contact the part of the face mask to be welded.

[0012] Optionally, the end of the support is arranged at an angle and fits into the part of the mask with a face seal to be welded; The support portion is provided with a clearance groove, which is used to avoid the face seal portion of a mask with a face seal; the clearance groove is located on the lower side of the end of the support portion.

[0013] Optionally, the clearance groove is a rectangular groove arranged in the horizontal direction and capable of accommodating the face seal portion of a face mask in the horizontal direction.

[0014] Optionally, a fixed seat is provided on the lower side of the lifting seat; The lifting seat is connected to a second cylindrical shaft, which passes through the fixed seat. A second spring is sleeved on the second cylindrical shaft, with its two ends contacting the lifting seat and the fixed seat respectively. The second spring applies an elastic force to the lifting seat and supports the lifting seat during its descent.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a support device for a face mask with a face seal. A lifting seat is vertically and vertically connected to a base; two support seats are slidably connected to the lifting seat, and the two support seats move closer to each other or further apart during sliding relative to the lifting seat; a first spring connects the two support seats and the support seat is subjected to the elastic force of the first spring; a groove is formed between the two support seats; the lifting head assembly includes a lifting head, which is vertically and vertically connected to the base. During the lifting process, the lifting head can pass through the base and be inserted into the groove; during the first stage of the lifting process, the lifting head passes through the lifting seat and is inserted into the groove; during the second stage of the lifting process... During the ascent, the lifting head raises the lifting seat relative to the base, allowing the two support seats to enter the internal space of the face-sealed mask. In the third stage of ascent, the lifting seat remains stationary relative to the base, with its height unchanged. The lifting head rises further, moving the two support seats away from each other, so that they contact the part of the face-sealed mask to be welded. This multi-stage ascent of the lifting head facilitates moving the two support seats away from each other, avoiding the need for multiple power models and simplifying the structure of the support device for the face-sealed mask. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0018] Figure 1 A schematic diagram of a support device for a face mask with a face seal according to one embodiment of this application is shown.

[0019] Figure 2 A cross-sectional view of the lifting head of a face mask with a face seal according to an embodiment of this application is shown in the first stage.

[0020] Figure 3 A cross-sectional view of the lifting head of a face mask with a face seal according to an embodiment of this application is shown in the second stage.

[0021] Figure 4 A cross-sectional view of the lifting head of a face mask with a face seal according to an embodiment of this application is shown in the third stage.

[0022] Figure 5 It shows Figure 4 A magnified view of a portion of point A in the middle.

[0023] Figure Labels 100. Support device for face mask with face seal; 10. Base; 11. Linear bearing; 20. Lifting seat; 21. First cylindrical shaft; 211. Limiting seat; 22. Fixed seat; 23. Second cylindrical shaft; 231. Second spring; 30. Support base; 30a. Groove; 31. First spring; 32. Roller; 33. Sliding body; 34. Support part; 34a. Clearance groove; 341. End; 40. Lifting head assembly; 41. Lifting head; 411. Vertical part; 42. First lifting module; 43. Drive seat. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] Please refer to the attached document. Figures 1-5 This application provides a support device 100 for a face-sealed mask, which is used to open up the part of the face-sealed mask to be welded.

[0026] Please refer to the attached document. Figures 1-5In this embodiment, the support device 100 for a face-sealed mask includes a base 10, a lifting seat 20, a support seat 30, and a lifting head assembly 40. The lifting seat 20 is slidably connected to the base 10; the support seat 30 is slidably connected to the lifting seat 20, and there are two support seats 30. The two support seats 30 move closer to each other or further away from each other during sliding relative to the lifting seat 20; a first spring 31 is connected between the two support seats 30 and the support seat 30 is subjected to the elastic force of the first spring 31; a groove 30a is formed between the two support seats 30; the lifting head assembly 40 includes a lifting head 41, which is slidably connected to the base 10. During the lifting process, the lifting head 41 can pass through the base 10 and can be inserted into the groove 30a; during the first stage of the upward movement, the lifting head 41 passes through the lifting seat 20. The seat 20 is inserted into the groove 30a. During the second stage of the lifting process, the lifting head 41 drives the lifting seat 20 to rise relative to the base 10, so that the two support seats 30 enter the internal space of the face-sealed mask. During the third stage of the lifting process, the lifting seat 20 is stationary relative to the base 10, and the height of the lifting seat 20 remains unchanged. The lifting head 41 rises further and drives the two support seats 30 away from each other during the rise, so that the two support seats 30 contact the part of the face-sealed mask to be welded. This achieves multi-stage lifting of the lifting head 41, which facilitates the lifting of the lifting head 41 to drive the two support seats 30 away from each other, avoiding the need for multiple power models to achieve the same effect, and simplifying the structure of the support device 100 for the face-sealed mask.

[0027] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the base 10 serves as a support part 34 of the support device 100 for the face mask with a face seal. The base 10 is used to support the lifting seat 20, the support seat 30, and the lifting head assembly 40.

[0028] The lifting seat 20 is located on the upper side of the base 10 and is connected to the base 10 in a height-adjustable manner to facilitate adjustment of the height position of the lifting seat 20 relative to the base 10.

[0029] A support seat 30 is disposed on the upper side of the lifting seat 20. The support seat 30 is slidably connected to the lifting seat 20 and slides along the length direction of the lifting seat 20 to facilitate adjustment of the length position of the support seat 30 relative to the lifting seat 20. There are two support seats 30, which move closer to each other or away from each other during sliding relative to the lifting seat 20. A first spring 31 is connected between the two support seats 30 and the support seats are subjected to the elastic force of the first spring 31 so that the two support seats 30 move closer to each other under the elastic force of the first spring 31, thereby facilitating the two support seats 30 to fit together when there is no external force. A groove 30a is formed between the two support seats 30.

[0030] The lifting head assembly 40 includes a lifting head 41, which is movably connected to the base 10 to facilitate adjustment of its position relative to the base 10. During lifting, the lifting head 41 passes through the base 10 and is inserted into a groove 30a. In the first stage of lifting, the lifting head 41 passes through the lifting seat 20 and is then inserted into the groove 30a. In the second stage of lifting, the lifting head 41 causes the lifting seat 20 to rise relative to the base 10, allowing the two support seats 30 to enter the interior space of the face-sealed mask. During the third stage of the lifting head 41's ascent, the lifting seat 20 remains stationary relative to the base 10, and the height of the lifting seat 20 remains constant. The lifting head 41 rises further, and during the ascent, it drives the two support seats 30 to move away from each other, so that the two support seats 30 contact the part of the mask with face seal to be welded. This achieves multi-stage ascent of the lifting head 41, which facilitates the lifting of the lifting head 41 to drive the two support seats 30 away from each other, avoiding the need for multiple power models to work together to drive the two support seats 30 away from each other, thus simplifying the structure of the support device 100 for the mask with face seal.

[0031] Please refer to the attached document. Figures 1-4 In this embodiment, the lifting head assembly 40 further includes a first lifting module 42, which is arranged vertically. The connecting end of the first lifting module 42 is connected to the base 10. The lifting end of the first lifting module 42 is connected to the lifting head 41, so that the lifting head 41 can automatically lift and lower relative to the base 10 under the action of the first lifting module 42. The first lifting module 42 drives the lifting head 41 to pass through the through hole, groove 30a and space between the two support seats 30 of the lifting seat 20 in sequence, so as to realize the multi-stage lifting of the lifting head 41. This facilitates the lifting of the two support seats 30 to move away from each other by lifting the lifting head 41, avoiding the need for multiple power models to move the two support seats 30 away from each other, and simplifying the structure of the support device 100 of the face-sealed mask. Optionally, the first lifting module 42 is a cylinder, a hydraulic cylinder or a linear movement module.

[0032] The lifting head assembly 40 also includes a drive seat 43, which is located on the lower side of the lifting head 41 and connected to the lifting end of the first lifting module 42. The lifting end of the first lifting module 42 drives the drive seat 43 to rise and fall. The outer diameter of the drive seat 43 is larger than the diameter of the through hole of the lifting seat 20, so that the lifting head 41 can drive the lifting seat 20 to rise relative to the base 10 through the drive seat 43 during the second stage of rising.

[0033] Please refer to the attached document. Figures 1-5In this embodiment, both support seats 30 are connected to rollers 32. Both rollers 32 are close to the groove 30a and are in contact during the first and second stages of the lifting head 41's ascent. The lifting head 41 is arranged in an inverted V shape so that the outer contour of the lifting head 41 matches the inner contour of the groove 30a. The opposite side walls of the lifting head 41 can contact the two rollers 32. At the same time, the force exerted by the lifting head 41 on the two rollers 32 is less than the rebound force between the two support seats 30, so that the two rollers 32 maintain contact during the first and second stages of the ascent. The lifting head 41 can drive the support seats 30 and the lifting seat 20 to rise, so that the two support seats 30 can enter the internal space of the face-sealed mask. This makes it easier for the lifting head 41 to push the two rollers 32 apart during the third stage of the ascent, so that the two support seats 30 move away from each other and contact the part of the face-sealed mask to be welded.

[0034] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the lifting head 41 is further provided with a vertical part 411, which is arranged in the vertical direction and can roll in contact with the corresponding roller 32. When the roller 32 is arranged relative to the vertical part 411, the distance between the two support seats 30 remains unchanged, which ensures the opening effect of the two support seats 30 on the part of the mask to be welded with the face seal, and avoids that the opening force of the two support seats 30 on the part of the mask to be welded with the face seal is too large.

[0035] Please refer to the attached document. Figures 1-4 In this embodiment, the base 10 is provided with multiple linear bearings 11; the lifting seat 20 is connected to multiple first cylindrical shafts 21; the multiple first cylindrical shafts 21 are arranged relative to the corresponding linear bearings 11 and pass through the corresponding linear bearings 11; so that the lifting seat 20 can move up and down relative to the base 10 through the cooperation of the linear bearings 11 and the first cylindrical shafts 21, ensuring the smoothness of the lifting seat 20 relative to the base 10. Optionally, there are two linear bearings 11, which are arranged at intervals along the length of the base 10 and are located on both sides of the lifting head 41.

[0036] At least one first cylindrical shaft 21 is connected to a limiting seat 211, which is fixedly connected to the first cylindrical shaft 21 and located below the base 10. The limiting seat 211 gradually approaches the base 10 as the lifting seat 20 rises, and contacts the base 10 at the beginning of the third stage of the lifting head 41's ascent. This ensures that the support seat 30 remains at the same height difference from the base 10 during the third stage of the lifting head 41's ascent, and the support seat 30 remains stationary relative to the base 10. This allows the limiting seat 211 to restrict the lifting distance of the lifting seat 20 relative to the base 10, ensuring that the lifting seat 20 stops rising after driving the two support seats 30 into the internal space of the face-sealed mask, while the lifting head 41 continues to rise, driving the two support seats 30 away from each other, so that the two support seats 30 contact the part of the face-sealed mask to be welded. Optionally, there may be one or two limiting seats 211.

[0037] Please refer to the attached document. Figures 1-4 In this embodiment, the limiting seat 211 restricts the further rise of the lifting seat 20 when it contacts the base 10; the limiting seat 211 covers the corresponding linear bearing 11 when it contacts the base 10, so that the limiting seat 211 and the linear bearing 11 are in a fixed state, thereby making it easier to keep the position of the lifting seat 20 relative to the base 10 stationary.

[0038] Please refer to the attached document. Figures 1-4 In this embodiment, the support base 30 is located above the lifting base 20 and is slidably connected to the upper side wall of the lifting base 20. The support base 30 includes a sliding body 33 and a support portion 34. The support portion 34 is connected to the sliding body 33, and the sliding body 33 is slidably connected to the upper side wall of the lifting base 20 to adjust the position of the sliding body 33 relative to the upper side wall of the lifting base 20. This facilitates the sliding of the support base 30 relative to the lifting base 20 via the sliding body 33. Optionally, the sliding body 33 slides relative to the lifting base 20 via a slide rail. The support portion 34 is connected to a corresponding roller 32, which is rotatably connected to the support portion 34. This allows the lifting head 41 to drive the roller 32 to rotate relative to the support portion 34 during the lifting process, thereby facilitating rolling contact between the lifting head 41 and the support portion 34.

[0039] With the two support seats 30 in a back-to-back and far apart state, the end 341 of the support part 34 can contact the part of the mask with face seal to be welded, ensuring the opening effect of the two support seats 30 on the part of the mask with face seal to be welded.

[0040] Please refer to the attached document. Figures 1-5In this embodiment of the application, the end 341 of the support portion 34 is arranged at an angle and fits against the part of the mask to be welded with a face seal; so that the end 341 of the support portion 34 can make angled contact with the part of the mask to be welded with a face seal, avoiding contact between the end 341 of the support portion 34 and the sharp corner of the part of the mask to be welded with a face seal, and preventing the end 341 of the support portion 34 from puncturing the mask with a face seal.

[0041] The support part 34 is provided with a relief groove 34a, which is used to avoid the face seal portion of the mask with face seal; the relief groove 34a is located on the lower side of the end 341 of the support part 34 so that the face seal portion of the mask with face seal can pass through the lower side of the end 341 of the support part 34.

[0042] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the clearance groove 34a is a rectangular groove arranged in the horizontal direction and capable of accommodating the face seal portion of the face-sealed mask in the horizontal direction, so as to separate the face seal portion of the face-sealed mask from the part of the face-sealed mask to be welded, thereby avoiding the face seal portion of the face-sealed mask from being attached to the part of the face-sealed mask to be welded.

[0043] Please refer to the attached document. Figures 1-4 In this embodiment, a fixed seat 22 is provided on the lower side of the lifting seat 20; the lifting seat 20 is connected to a second cylindrical shaft 23, the second cylindrical shaft 23 passes through the fixed seat 22, and a second spring 231 is sleeved on the second cylindrical shaft 23. The two ends of the second spring 231 contact the lifting seat 20 and the fixed seat 22 respectively. The second spring 231 applies an elastic force to the lifting seat 20 and supports the lifting seat 20 during the descent process, so that the second spring 231 can buffer the lifting seat 20 during the descent process and prevent the lifting seat 20 from falling too fast and impacting the base 10.

[0044] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a support device 100 for a face mask with a face seal. A lifting seat 20 is vertically and vertically connected to a base 10. Support seats 30 are slidably connected to the lifting seat 20. There are two support seats 30, which move closer to each other or further away from each other during sliding relative to the lifting seat 20. A first spring 31 connects the two support seats 30 and the support seat 30 is subjected to the elastic force of the first spring 31. A groove 30a is formed between the two support seats 30. A lifting head assembly 40 includes a lifting head 41, which is vertically and vertically connected to the base 10. During lifting, the lifting head 41 can pass through the base 10 and be inserted into the groove 30a. During the first stage of lifting, the lifting head 41 passes through the lifting seat 20 and is then inserted into the groove 30a. During the second stage of the lifting head 41's ascent, the lifting head 41 drives the lifting seat 20 to rise relative to the base 10, allowing the two support seats 30 to enter the internal space of the face-sealed mask. During the third stage of the lifting head 41's ascent, the lifting seat 20 remains stationary relative to the base 10, with its height unchanged. The lifting head 41 rises further, driving the two support seats 30 away from each other during the ascent, so that the two support seats 30 contact the part of the face-sealed mask to be welded. This achieves multi-stage ascent of the lifting head 41, making it easier to drive the two support seats 30 away from each other through the lifting of the lifting head 41. This avoids the need for multiple power models to work together to drive the two support seats 30 away from each other, simplifying the structure of the face-sealed mask support device 100.

[0045] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0046] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0047] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A support device for a face-seal mask, characterized in that, include: Base; A lifting seat is connected to the base in a height-adjustable manner; A support base is slidably connected to the lifting seat. There are two support bases, which move closer to each other or move away from each other during sliding relative to the lifting seat. A first spring connects the two support bases and the support bases are subjected to the elastic force of the first spring. A groove is formed between the two support seats; A lifting head assembly includes a lifting head that is elliptically connected to the base, the lifting head being able to pass through the base during lifting and being inserted into the groove; During the first stage of the lifting process, the lifting head is inserted into the groove after passing through the lifting seat. During the second stage of the lifting process, the lifting head drives the lifting seat to rise relative to the base, so that the two support seats enter the internal space of the face-sealed mask. During the third stage of the lifting head's ascent, the lifting seat is stationary relative to the base, and the height of the lifting seat remains constant. The lifting head rises further, and during the ascent, it drives the two support seats to move away from each other, so that the two support seats contact the part of the mask with the face seal to be welded.

2. The support device for a mask with a face seal according to claim 1, characterized in that The lifting head assembly further includes a first lifting module, the connecting end of which is connected to the base; the lifting end of the first lifting module is connected to the lifting head, and drives the lifting head to pass through the through hole of the lifting seat, the groove and the space between the two support seats in sequence; the first lifting module is a cylinder, a hydraulic cylinder or a linear motion module.

3. The support device for a mask with a face seal according to claim 2, characterized in that Both of the support seats are connected to rollers, both of the rollers are close to the groove, and are in contact with the lifting head during the first stage of the lifting process and the second stage of the lifting process. The lifting head is arranged in an inverted V shape. The two opposite side walls of the lifting head can contact the two rollers. At the same time, the force exerted by the lifting head on the two rollers is less than the rebound force between the two support seats, so that the two rollers maintain contact during the first stage of the lifting process and the second stage of the lifting process. The lifting head can drive the support seats and the lifting seat to rise.

4. The support device for a mask with a face seal according to claim 3, characterized in that The lifting head also has a vertical part, which is arranged in the vertical direction and can roll in contact with the corresponding roller.

5. The support device for a mask with a face seal of claim 3, wherein, The base is equipped with multiple linear bearings; The lifting seat is connected to a plurality of first cylindrical shafts; the plurality of first cylindrical shafts are arranged relative to the corresponding linear bearings and are threaded through the corresponding linear bearings; At least one of the first cylindrical shafts is connected to a limiting seat, which is fixedly connected to the first cylindrical shaft and located on the lower side of the base; As the lifting seat rises, the limiting seat gradually approaches the base and contacts the base at the beginning of the third stage of the lifting head's upward process. This ensures that the support seat remains at the same height difference with the base during the third stage of the lifting head's upward process. The support seat is stationary relative to the base, while the lifting head continues to rise, causing the two support seats to move away from each other.

6. The support device for a face-mask with face seal according to claim 5, characterized in that The limiting seat restricts the further rise of the lifting seat when it contacts the base; the limiting seat covers the corresponding linear bearing when it contacts the base.

7. The support device for a mask with a face seal of claim 3, wherein, The support base is located on the upper side of the lifting base and is slidably connected to the upper side wall of the lifting base; The support base includes a sliding body and a support portion; the support portion is connected to the sliding body, and the sliding body is slidably connected to the upper side wall of the lifting base; the support portion is connected to a corresponding roller, which is rotatably connected to the support portion; With the two supports facing away from each other, the ends of the supports can contact the part of the face mask to be welded.

8. The support device for a face-mask with a face seal according to claim 7, characterized in that The end of the support is arranged at an angle and fits into the part of the mask with a face seal to be welded; The support portion is provided with a clearance groove, which is used to avoid the face seal portion of a mask with a face seal; the clearance groove is located on the lower side of the end of the support portion.

9. The support device for a face-mask with a face seal according to claim 8, characterized in that The clearance groove is a rectangular groove arranged in the horizontal direction and capable of accommodating the face seal portion of a face mask in the horizontal direction.

10. The support device for a mask with face seal of claim 1, wherein, A fixed seat is provided on the lower side of the lifting seat; The lifting seat is connected to a second cylindrical shaft, which passes through the fixed seat. A second spring is sleeved on the second cylindrical shaft, with its two ends contacting the lifting seat and the fixed seat respectively. The second spring applies an elastic force to the lifting seat and supports the lifting seat during its descent.

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