Feeding device for mask nose bridge strip

Abstract

The feeding device of the mask nose bridge strip comprises a bottom frame and supporting frames, the supporting frames are symmetrically installed at the top end of the bottom frame, lifting frames are symmetrically installed on the side walls of the supporting frames in a sliding mode, upper electric push rods are movably installed on the outer walls of the lifting frames, and lower electric push rods are movably installed on the outer walls of the lifting frames. First shafts are movably mounted on the side walls, on one sides of the upper electric push rods, of the lifting frame, and the upper electric push rods are movably connected with the lifting frame through the first shafts. According to the feeding device, fast and stable conveying of mask nose bridge strips, movable adjustment of the material receiving position and continuous and stable pay-off are achieved, stable clamping and supporting of a nose bridge strip roll by the feeding device are facilitated, and movable adjustment of the material receiving position of cloth at different positions by the feeding device is facilitated; according to the feeding device, stable and continuous pay-off can be conducted at a certain height conveniently, the feeding stability of the mask nose bridge strips is improved, and the operation and use convenience of the feeding device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding devices, in particular to a feeding device for a nose bridge strip of a mask. Background Art

[0002] The nose bridge strip is also called the all-plastic nose bridge strip, nose bridge rib, and nose bridge line. It is a thin rubber strip inside the mouthpiece, which plays the role of fixing the mouthpiece on the bridge of the nose. The materials of the nose bridge strip of the mask are mainly plastic, pure aluminum and polyolefin polymer coated galvanized filament. At present, most manufacturers produce masks using polyolefin polymer coated galvanized filament. Some manufacturers may also use plastic as the nose bridge strip in the production of masks. The advantage is low price and low manufacturing cost, but plastic is fragile. There are also a very small number of manufacturers that use pure aluminum for the nose bridge strips of masks. The advantage is that it is soft and highly plastic, and the disadvantage is high cost.

[0003] For example, a feeding device for a nose bridge strip of a mask disclosed in authorization announcement number CN218859993U includes a chassis, a support rod is fixedly connected to one side of the chassis, one end of the support rod is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is rotatably connected to a limit shaft, a drive box is fixedly connected to one side of the chassis, and the inner walls of the drive box are respectively fixedly connected to a first motor and a second motor;

[0004] Although the third motor drives the motor shaft to drive the gear to rotate, the gear drives the first conveying cylinder to rotate, and under the action of the chain, the second conveying cylinder is driven to rotate simultaneously inside the driving box. The two groups of first conveying cylinders and second conveying cylinders rotate relative to each other to convey the nose bridge strip. When the nose bridge strip passes through the upper and lower guides of the first and second guides, it is not easy to shift or misalign, and the feeding efficiency is high and the feeding is stable.

[0005] However, it does not solve the problem that the existing feeding device is not conducive to the rapid and stable delivery of the nose bridge strip of the mask, the mobile adjustment of the material connection position, and the continuous and stable line release. It is not convenient for the feeding device to stably clamp and support the nose bridge strip roll and to move and adjust the material connection position for fabrics in different positions. It is not convenient to maintain a certain height for stable and continuous line release, which greatly affects the stability of the mask nose bridge strip feeding and the convenience of operation. Utility Model Content

[0006] The purpose of the utility model is to provide a feeding device for a nose bridge strip of a mask, so as to solve the problems proposed in the above background technology that the feeding device is not convenient for the feeding device to quickly and stably convey the nose bridge strip of the mask, movably adjust the material connection position, continuously and stably pay out the line, is not convenient for the feeding device to stably clamp and support the nose bridge strip roll and movably adjust the material connection position for fabrics at different positions, and is not convenient for maintaining a certain height for stable and continuous payout, which affects the stability of the feeding of the nose bridge strip of the mask and the convenience of operation and use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding device for the nose bridge strip of a mask, comprising a base frame and a support frame, the top of the base frame is symmetrically installed with a support frame, the side walls of the support frame are symmetrically slidably installed with a lifting frame, the outer wall of the lifting frame is movably installed with an upper electric push rod, the side wall of the lifting frame on one side of the upper electric push rod is movably installed with a first shaft, and the upper electric push rods are movably connected to the lifting frame through the first shaft, the output end of the upper electric push rod is installed with a linkage rod, the outer wall of the lifting frame on one side of the linkage rod is movably installed with a right clamping shaft, the outer wall of the right clamping shaft is covered with a right gear arm, and the right gear arm is connected to the linkage rod, the outer wall of the lifting frame on one side of the right gear arm is movably installed with a left clamping shaft, the outer wall of the left clamping shaft is covered with a left gear arm, and the left gear arm is meshed with the right gear arm, and the top of the right gear arm and the left gear arm are movably installed with a first wheel.

[0008] Preferably, a fixed rod is movably installed on the top of the base frame on one side of the support frame, and a middle electric push rod is symmetrically installed on the top of the base frame on one side of the fixed rod. The output ends of the middle electric push rods are all equipped with push blocks, and the push blocks are all slidably connected to the fixed rod.

[0009] Preferably, a slide groove is provided at one end of the top of the base frame away from the support frame, and a fixing frame is slidably installed inside the slide groove, and the fixing frame extends to the outside of the slide groove.

[0010] Preferably, a right electric push rod is installed at the center position of the top of the fixed frame, a main slider is installed at the output end of the right electric push rod, and the main slider is slidably connected to the fixed frame, a support block is installed at the bottom end of the main slider, and the support block is slidably connected to the fixed frame, a connecting shaft is movably installed at the center position of the side wall of the support block, and the connecting shaft extends to the outside of the support block.

[0011] Preferably, an upper concave wheel is mounted on the outer wall of the connecting shaft, and two sets of third wheels are symmetrically and movably mounted on the side wall of the fixing frame on one side of the upper concave wheel.

[0012] Preferably, a stepper motor is installed on the side wall of the fixing frame below the support block, a concave wheel is installed at the output end of the stepper motor, a first electric push rod is installed at the top of the base frame below the stepper motor, and the output end of the first electric push rod is connected to the fixing frame.

[0013] Preferably, a reciprocating motor is installed at the top of the support frame, a reciprocating threaded rod is installed at the output end of the reciprocating motor, and the reciprocating threaded rod extends to the interior of the support frame, and a reciprocating threaded sleeve is symmetrically threaded on the side wall of the reciprocating threaded rod, and the reciprocating threaded sleeve is connected to the lifting frame.

[0014] Preferably, a remote controller is installed on the top of the chassis on one side of the slide, and the output end of the remote controller is electrically connected to the input ends of the reciprocating motor, the upper electric push rod, the middle electric push rod, the right electric push rod, the stepping motor, and the first electric push rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the feeding device not only realizes the fast and stable delivery of the nose bridge strip of the mask, the movably adjustable material connection position, and the continuous and stable line release, but also facilitates the stable clamping and support of the nose bridge strip roll by the feeding device, facilitates the movably adjustable material connection position for fabrics at different positions of the feeding device, facilitates the stable and continuous line release while maintaining a certain height, improves the stability of the nose bridge strip of the mask during feeding, and improves the convenience of operation and use of the feeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the right gear arm of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the concave wheel of the present invention;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the first electric push rod of the present invention;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the upper electric push rod of the present utility model;

[0021] Figure 6 It is a front view cross-sectional structural diagram of the reciprocating threaded rod of the present invention.

[0022] In the figure: 1. Base frame; 2. First shaft; 3. Support frame; 4. Lifting frame; 5. Upper electric push rod; 6. Linkage rod; 7. Right gear arm; 8. Right clamping shaft; 9. Left clamping shaft; 10. Left gear arm; 11. First wheel; 12. Fixed rod; 13. Middle electric push rod; 14. Push block; 15. Slide groove; 16. Fixed frame; 17. Right electric push rod; 18. Main slider; 19. Support block; 20. Connecting shaft; 21. Upper concave wheel; 22. Third wheel; 23. Stepping motor; 24. Lower concave wheel; 25. Reciprocating motor; 26. Reciprocating threaded rod; 27. First electric push rod; 28. Remote controller; 29. Reciprocating threaded sleeve. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-6 , the utility model provides an embodiment: a feeding device for the nose bridge strip of a mask, including a base frame 1 and a support frame 3, the top of the base frame 1 is symmetrically installed with the support frame 3, the side walls of the support frame 3 are symmetrically slidably installed with a lifting frame 4, the outer wall of the lifting frame 4 is movably installed with an upper electric push rod 5, the upper electric push rod 5 plays the role of power drive, the side wall of the lifting frame 4 on one side of the upper electric push rod 5 is movably installed with a first shaft 2, and the upper electric push rod 5 is movably connected to the lifting frame 4 through the first shaft 2, the upper electric push rod 5 The output ends of the push rods 5 are all equipped with linkage rods 6. A right card shaft 8 is movably mounted on the outer wall of the lifting frame 4 on one side of the linkage rod 6. A right gear arm 7 is mounted on the outer wall of the right card shaft 8, and the right gear arm 7 is connected to the linkage rod 6. A left card shaft 9 is movably mounted on the outer wall of the lifting frame 4 on one side of the right gear arm 7. A left gear arm 10 is mounted on the outer wall of the left card shaft 9, and the left gear arm 10 is meshed with the right gear arm 7. A first wheel 11 is movably mounted on the top of the right gear arm 7 and the left gear arm 10.

[0025] Move the device to the designated feeding and conveying position of the nose bridge strip of the mask, and hoist the nose bridge strip roll between the two groups of support frames 3 through external hoisting equipment. At this time, the right gear arm 7 and the right card shaft 8 are respectively located on both sides of the nose bridge strip roll. Open the upper electric push rod 5 by operating the remote controller 28, and the support frame 3 supports the lifting frame 4. The lifting frame 4 movably supports the upper electric push rod 5 through the first axis 2. The upper electric push rod 5 drives the right gear arm 7 to rotate with the right card shaft 8 as the axis through the linkage rod 6, and the left card shaft 9 movably supports the left gear arm 10. Under the meshing action of the right gear arm 7 and the left gear arm 10, the right gear arm 7 drives the left gear arm 10 to rotate with the left card shaft 9 as the axis. At the same time, the right gear arm 7 and the left gear arm 10 respectively drive the first wheel 11 above them to rotate synchronously, and the two groups of right gear arms 7 and left gear arms 10 respectively drive the first wheel 11 above them to clamp the nose bridge strip roll. The staff passes one end of the mask nose bridge strip wrapped on the surface of the nose bridge strip roll between the two groups of push blocks 14, passes between the two groups of third wheels 22 on the left again, and then passes between the upper concave wheel 21 and the lower concave wheel 24 to be pulled to the surface of the two groups of third wheels 22 on the right, and finally pulls one end of the mask nose bridge strip to the outside of the device to contact the fabric of the mask nose bridge strip. When the nose bridge strip roll is used up, the upper electric push rod 5 is opened in the reverse direction. At this time, the first wheel 11 clamps the nose bridge strip The roll is changed from a compressed state to a loose state to facilitate the replacement of the nose bridge strip roll. The right electric push rod 17 is opened by operating the remote controller 28. The fixed frame 16 supports the right electric push rod 17. The right electric push rod 17 drives the support block 19 to move downward along the surface of the fixed frame 16 through the main slider 18. The support block 19 drives the upper concave wheel 21 to move downward along the surface of the fixed frame 16 through the connecting shaft 20. The upper concave wheel 21 drops to contact with the top of the pulled mask nose bridge strip. The right electric push rod 17 is closed by operating the remote controller 28 to stop the upper concave wheel 21 from moving downward. The stepper motor 23 is turned on by operating the remote controller 28. The fixed frame 16 drives the stepper motor 23 The stepper motor 23 drives the concave wheel 24 to rotate, and the concave wheel 24 drives the nose bridge strip of the mask on its surface to move. At this time, the pulled nose bridge strip of the mask passes through the surface of the concave wheel 24 and is sequentially transported between the two groups of third wheels 22 on the right side. The two groups of third wheels 22 on the right side transport the nose bridge strip of the mask again, and finally transport it to contact with the external cloth, so as to facilitate the subsequent processing and connection of the transported nose bridge strip of the mask and the cloth, thereby realizing the rapid and stable transportation of the nose bridge strip by the feeding device of the nose bridge strip, facilitating the stable clamping support of the nose bridge strip roll by the feeding device, facilitating the convenient replacement of the nose bridge strip roll, and improving the convenience of operation and use of the feeding device;

[0026] A fixed rod 12 is movably installed at the top of the base frame 1 on one side of the support frame 3, and a middle electric push rod 13 is symmetrically installed at the top of the base frame 1 on the side of the fixed rod 12. The middle electric push rod 13 plays a role of power drive, and the output end of the middle electric push rod 13 is installed with a push block 14, and the push blocks 14 are all slidably connected to the fixed rod 12. A slide groove 15 is provided at the end of the top of the base frame 1 away from the support frame 3, and a fixed frame 16 is slidably installed inside the slide groove 15, and the fixed frame 16 extends to the outside of the slide groove 15;

[0027] A right electric push rod 17 is installed at the center position of the top of the fixed frame 16. The right electric push rod 17 plays a role of power drive. A main slider 18 is installed at the output end of the right electric push rod 17, and the main slider 18 is slidably connected to the fixed frame 16. A support block 19 is installed at the bottom end of the main slider 18, and the support block 19 is slidably connected to the fixed frame 16. A connecting shaft 20 is movably installed at the center position of the side wall of the support block 19, and the connecting shaft 20 extends to the outside of the support block 19. An upper concave wheel 21 is sleeved on the outer wall of the connecting shaft 20, and two sets of third wheels 22 are symmetrically and movably installed on the side wall of the fixed frame 16 on one side of the upper concave wheel 21.

[0028] A stepper motor 23 is mounted on the side wall of the fixed frame 16 below the support block 19. The stepper motor 23 serves as a power drive. A concave wheel 24 is mounted on the output end of the stepper motor 23. A first electric push rod 27 is mounted on the top of the base frame 1 below the stepper motor 23. The output end of the first electric push rod 27 is connected to the fixed frame 16. The first electric push rod 27 serves as a power drive.

[0029] By operating the remote controller 28 to open the middle electric push rod 13, the chassis 1 supports the middle electric push rod 13 and the fixed rod 12, and the middle electric push rod 13 drives the push block 14 to move along the surface of the fixed rod 12. With the cooperation of the two groups of push blocks 14, it is convenient to adjust the longitudinal limit of the nose bridge strip of the conveyed mask. By operating the remote controller 28 to open the first electric push rod 27, the chassis 1 supports the first electric push rod 27. The first electric push rod 27 drives the fixed frame 16 to slide inside the slide groove 15. The fixed frame 16 drives the upper concave wheel 21, the third wheel 22 and the lower concave wheel 24 to move synchronously to facilitate the adjustment of the position of the conveyed nose bridge strip in contact with the cloth, thereby realizing a convenient mobile adjustment of the material connection position of the feeding device of the nose bridge strip of the mask, and facilitating the feeding device to move and adjust the material connection position for cloth at different positions;

[0030] The top of each support frame 3 is equipped with a reciprocating motor 25, which plays the role of power drive. The output end of each reciprocating motor 25 is equipped with a reciprocating threaded rod 26, which extends into the interior of the support frame 3. The side walls of the reciprocating threaded rod 26 are symmetrically threaded with reciprocating threaded sleeves 29, and the reciprocating threaded sleeves 29 are connected to the lifting frame 4.

[0031] A remote controller 28 is installed at the top of the chassis 1 on one side of the chute 15, and the output end of the remote controller 28 is electrically connected to the input ends of the reciprocating motor 25, the upper electric push rod 5, the middle electric push rod 13, the right electric push rod 17, the stepping motor 23, and the first electric push rod 27;

[0032] When the nose bridge strip is unwinding, the remote controller 28 is operated to turn on the reciprocating motor 25, and the support frame 3 supports the reciprocating motor 25. The reciprocating motor 25 drives the reciprocating threaded rod 26 to rotate. Under the thread cooperation between the reciprocating threaded rod 26 and the reciprocating threaded sleeve 29, the reciprocating threaded rod 26 drives the reciprocating threaded sleeve 29 to move back and forth, and the reciprocating threaded sleeve 29 drives the lifting frame 4 to move back and forth. The lifting frame 4 drives the right gear arm 7, the left gear arm 10, the first wheel 11 and the clamped nose bridge strip roll to move back and forth synchronously to facilitate the adjustment of the position of the nose bridge strip roll, to prevent the line from being too high or too low when the nose bridge strip roll is unwinding, to prevent the line from being entangled when it is loose, to facilitate maintaining a certain height for stable and continuous unwinding, and to realize the convenient and continuous stable unwinding of the feeding device of the nose bridge strip of the mask, to prevent the line from being too high or too low when the nose bridge strip roll is unwinding, to facilitate maintaining a certain height for stable and continuous unwinding, and to improve the stability of the nose bridge strip when feeding.

[0033] Working principle: When in use, connect the external power supply, first move the device to the designated feeding and conveying position of the nose bridge strip of the mask, and hoist the nose bridge strip roll between the two sets of support frames 3 through the external hoisting equipment. At this time, the right gear arm 7 and the right card shaft 8 are respectively located on both sides of the nose bridge strip roll, and the upper electric push rod 5 drives the right gear arm 7 through the linkage rod 6 to rotate with the right card shaft 8 as the axis, and the left card shaft 9 movably supports the left gear arm 10, and the right gear arm 7 drives the left gear arm 10 to rotate with the left card shaft 9 as the axis. At the same time, the right gear arm 7 and the left gear arm 10 respectively drive the first wheel 11 above them to rotate synchronously, and the two groups of right gear arms 7 and left gear arms 10 respectively drive the first wheel 11 above them to clamp the nose bridge strip roll, and the staff will clamp the mask nose strip wrapped on the surface of the nose bridge strip roll. One end of the beam passes between the two groups of push blocks 14, passes between the two groups of third wheels 22 on the left again, and then passes between the upper concave wheel 21 and the lower concave wheel 24 to be pulled to the surface of the two groups of third wheels 22 on the right, and finally one end of the nose bridge strip of the mask is pulled to the outside of the device to contact the fabric of the nose bridge strip of the mask. When the nose bridge strip roll is used up, the upper electric push rod 5 is opened in reverse. At this time, the first wheel 11 turns the nose bridge strip roll from a compressed state to a loose state to facilitate the replacement of the nose bridge strip roll. The right electric push rod 17 drives the support block 19 to move downward along the surface of the fixing frame 16 through the main slider 18. The support block 19 drives the upper concave wheel 21 to move downward along the surface of the fixing frame 16 through the connecting shaft 20, and the upper concave wheel 21 drops to contact the top of the pulled nose bridge strip of the mask. , by operating the remote controller 28 to close the right electric push rod 17, the upper concave wheel 21 stops moving downward, the stepping motor 23 drives the lower concave wheel 24 to rotate, and the lower concave wheel 24 drives the mask nose bridge strip on its surface to move. At this time, the pulled mask nose bridge strip passes through the surface of the lower concave wheel 24 and is sequentially transported between the two groups of third wheels 22 on the right. The mask nose bridge strip is transported again by the two groups of third wheels 22 on the right, and finally transported to contact with the external cloth to facilitate the subsequent processing and connection of the transported mask nose bridge strip and the cloth. The middle electric push rod 13 drives the push block 14 to move along the surface of the fixed rod 12. With the cooperation of the two groups of push blocks 14, the longitudinal limit adjustment of the transported mask nose bridge strip is facilitated. The first electric push rod 27 drives The movable fixed frame 16 slides inside the slide 15, and the fixed frame 16 drives the upper concave wheel 21, the third wheel 22 and the lower concave wheel 24 to move synchronously to facilitate the adjustment of the position of the nose bridge strip in contact with the cloth. The reciprocating motor 25 drives the reciprocating threaded rod 26 to rotate, and the reciprocating threaded rod 26 drives the reciprocating threaded sleeve 29 to move back and forth. The reciprocating threaded sleeve 29 drives the lifting frame 4 to move back and forth, and the lifting frame 4 drives the right gear arm 7, the left gear arm 10, the first wheel 11 and the clamped nose bridge strip roll to move back and forth synchronously to facilitate the adjustment of the position of the nose bridge strip roll, to prevent the nose bridge strip roll from being loose due to being too high or too low when the line is paid out, to prevent the line from being entangled when it is loose, and to facilitate maintaining a certain height for stable and continuous payout to complete the use of the feeding device.

Claims

1. A feeding device for a nose bridge strip of a mask, comprising a base frame (1) and a support frame (3), characterized in that: The top of the base frame (1) is symmetrically mounted with a support frame (3), and the side walls of the support frame (3) are symmetrically slidably mounted with a lifting frame (4), and the outer wall of the lifting frame (4) is movably mounted with an upper electric push rod (5), and the side wall of the lifting frame (4) on one side of the upper electric push rod (5) is movably mounted with a first shaft (2), and the upper electric push rod (5) is movably connected to the lifting frame (4) through the first shaft (2), and the output end of the upper electric push rod (5) is mounted with a linkage rod (6), and the lifting on one side of the linkage rod (6) is movably mounted. A right clamping shaft (8) is movably mounted on the outer wall of the frame (4), a right gear arm (7) is mounted on the outer wall of the right clamping shaft (8), and the right gear arm (7) is connected to the linkage rod (6), a left clamping shaft (9) is movably mounted on the outer wall of the lifting frame (4) on one side of the right gear arm (7), a left gear arm (10) is mounted on the outer wall of the left clamping shaft (9), and the left gear arm (10) is meshed with the right gear arm (7), and a first wheel (11) is movably mounted on the top of the right gear arm (7) and the left gear arm (10).

2. A feeding device for a nose bridge strip of a mask according to claim 1, characterized in that: A fixing rod (12) is movably mounted on the top of the base frame (1) on one side of the support frame (3), and a middle electric push rod (13) is symmetrically mounted on the top of the base frame (1) on one side of the fixing rod (12). Push blocks (14) are mounted on the output ends of the middle electric push rods (13), and the push blocks (14) are slidably connected to the fixing rod (12).

3. A feeding device for a nose bridge strip of a mask according to claim 1, characterized in that: A slide groove (15) is provided at one end of the top of the base frame (1) away from the support frame (3), a fixing frame (16) is slidably mounted inside the slide groove (15), and the fixing frame (16) extends to the outside of the slide groove (15).

4. A feeding device for a nose bridge strip of a mask according to claim 3, characterized in that: A right electric push rod (17) is installed at the center position of the top end of the fixed frame (16), a main slider (18) is installed at the output end of the right electric push rod (17), and the main slider (18) is slidably connected to the fixed frame (16), a support block (19) is installed at the bottom end of the main slider (18), and the support block (19) is slidably connected to the fixed frame (16), a connecting shaft (20) is movably installed at the center position of the side wall of the support block (19), and the connecting shaft (20) extends to the outside of the support block (19).

5. A feeding device for a nose bridge strip of a mask according to claim 4, characterized in that: An upper concave wheel (21) is sleeved on the outer wall of the connecting shaft (20), and two sets of third wheels (22) are symmetrically and movably mounted on the side wall of the fixing frame (16) on one side of the upper concave wheel (21).

6. A feeding device for a nose bridge strip of a mask according to claim 4, characterized in that: A stepper motor (23) is mounted on the side wall of the fixed frame (16) below the support block (19), a concave wheel (24) is mounted on the output end of the stepper motor (23), a first electric push rod (27) is mounted on the top of the base frame (1) below the stepper motor (23), and the output end of the first electric push rod (27) is connected to the fixed frame (16).

7. A feeding device for a nose bridge strip of a mask according to claim 1, characterized in that: The top of each support frame (3) is equipped with a reciprocating motor (25), and the output end of each reciprocating motor (25) is equipped with a reciprocating threaded rod (26), and the reciprocating threaded rod (26) extends into the interior of the support frame (3). The side walls of each reciprocating threaded rod (26) are symmetrically threadedly connected with a reciprocating threaded sleeve (29), and the reciprocating threaded sleeve (29) is connected to the lifting frame (4).

8. A feeding device for a nose bridge strip of a mask according to claim 3, characterized in that: A remote controller (28) is installed on the top of the chassis (1) on one side of the slide (15), and the output end of the remote controller (28) is electrically connected to the input ends of the reciprocating motor (25), the upper electric push rod (5), the middle electric push rod (13), the right electric push rod (17), the stepping motor (23), and the first electric push rod (27).

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