Limiting device for feeding of mask ear bands

Abstract

The limiting device comprises a supporting cabinet body, a working platform is arranged at the top of the supporting cabinet body, a supporting sliding rail and a linear driving module are arranged at the top of the working platform, and the supporting sliding rail and the linear driving module are parallel to each other; a second sliding block is slidably arranged on the supporting sliding rail, a pneumatic clamp is arranged at the top of the second sliding block, and a positioning mechanism for modulating and setting the position of the second sliding block is arranged at the top of the second sliding block; a first sliding block is further arranged on the supporting sliding rail in a sliding mode, a pneumatic mechanical arm is arranged on the top of the first sliding block, and the first sliding block is connected with the linear driving module through a connecting frame. When the device is used, the pneumatic clamp and the pneumatic manipulator can be adjusted along the supporting slide rail, that is, when the distance between the first slide block and the second slide block is increased, the side length of the pulled and limited ear belt is long, and when the distance between the first slide block and the second slide block is reduced, the length of the pulled and limited ear belt is reduced, so that the device is simple to operate and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of mask production equipment, in particular to a limiting device for feeding mask ear straps. Background Art

[0002] A mask is a sanitary product that is worn on the mouth and nose to filter the air entering the mouth and nose, thereby protecting against harmful gases and germs.

[0003] like Figure 1 As shown in the figure, with the prevalence of automation, in the automated production of masks, the earband grasping robot 5 picks up the earband and bends it 90°, then places the ends of the earband on the edge of the mask. Then, an ultrasonic welder is used to weld the earband to the mask. However, the existing earband outlet device is not easy to adjust, making it difficult to adjust the earband length when there is an error. To this end, we propose a limiter device for feeding mask earbands. Utility Model Content

[0004] The utility model provides a limiting device for feeding mask ear straps, which has the advantage of allowing both a pneumatic clamp and a pneumatic manipulator to be adjusted along a supporting slide rail, solving the problems raised in the above-mentioned background technology.

[0005] The technical solution of the utility model is achieved as follows: a limiting device for feeding ear straps of masks comprises a supporting cabinet, a working platform is provided on the top of the supporting cabinet, a supporting slide rail and a linear drive module are provided on the top of the working platform, and the two are parallel; a second slider is provided on the supporting slide rail for sliding, a pneumatic clamp is provided on the top of the second slider, and a positioning mechanism for modulating and setting the position of the second slider is provided on the top of the second slider; a first slider is also provided on the supporting slide rail for sliding, a pneumatic manipulator is provided on the top of the first slider, and the first slider is connected to the linear drive module by a connecting frame, so that the first slider reciprocates toward the direction of the pneumatic clamp under the drive of the linear drive module.

[0006] Preferably, the positioning mechanism is threadedly connected to a positioning bolt on the second sliding block, and the positioning bolt is screwed into contact with the surface of the supporting slide rail.

[0007] Preferably, the pneumatic clamp includes a second fixed plate, and a fourth clamping plate is vertically installed on the top of the second fixed plate; a third clamping plate is provided parallel to one side of the fourth clamping plate, and the side of the third clamping plate away from the fourth clamping plate is connected to the second clamping cylinder, and the second clamping cylinder is provided on the second fixed plate; at least one second guide shaft is vertically provided on the side of the third clamping plate close to the fourth clamping plate, the second guide shaft is not coaxial with the second clamping cylinder, and the second guide shaft is movable through the fourth clamping plate.

[0008] Preferably, the pneumatic manipulator includes a first fixed plate, with a first clamping plate vertically installed on the top of the first fixed plate; a second clamping plate is provided parallel to one side of the first clamping plate, and the side of the second clamping plate away from the first clamping plate is connected to the first clamping cylinder, and the first clamping cylinder is arranged on the first fixed plate; the second clamping plate is vertically connected to at least one first guide shaft on the side close to the first clamping plate, the first guide shaft and the first clamping cylinder are not coaxial, and the first guide shaft is movable through the first clamping plate; strip clamping arms are respectively connected to the second clamping plate and the side of the first clamping plate close to the second fixed plate, and the two strip clamping arms are opened and closed under the drive of the first clamping cylinder.

[0009] Preferably, a cutter for cutting the ear strap is provided on one side of the second fixing plate.

[0010] Preferably, the tool includes a mounting plate connected to the second fixed plate; a shear cylinder is provided on the top of the mounting plate, the telescopic shaft of the shear cylinder is located on one side of the third clamping plate, and a cutting knife is installed on the end of the telescopic shaft; a connecting seat is connected to one side of the telescopic shaft, and a guide rod parallel to the telescopic shaft is installed on the connecting seat, the guide rod is movably placed in the guide seat, and the guide seat is installed on the mounting plate.

[0011] Preferably, one end of the strip-shaped clamp arm close to the second fixing plate is bent into an "L" shape, and a rubber pad is provided at the end of the "L".

[0012] Preferably, the cutting blade is an ultrasonic cutting blade.

[0013] Preferably, a controller is provided in the supporting cabinet, and the controller is respectively connected to the linear drive module, the shearing cylinder, the first clamping cylinder, and the second clamping cylinder.

[0014] Compared with the prior art, the present invention can adjust the pneumatic clamp and the pneumatic manipulator along the support rail when in use, that is, when the distance between the first slider and the second slider increases, the side length of the ear strap to be pulled and limited increases, and when the distance between the first slider and the second slider decreases, the length of the ear strap to be pulled and limited decreases;

[0015] Moreover, the length of the ear strap pulled out by the strip clamp arm each time is consistent, which can ensure that the length of the ear strap grasped by the ear strap grasping robot is also consistent, with high work efficiency, simple operation and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0019] Figure 3 This is a schematic diagram of the structure of the pneumatic clamp, pneumatic manipulator and tool of the utility model. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the structure of the pneumatic clamp, pneumatic manipulator and tool of the utility model Figure 2 .

[0021] Figure 5 This is a schematic diagram of the structure of the pneumatic clamp, pneumatic manipulator and tool of the utility model Figure 3 .

[0022] Figure 6 This is a top view of the pneumatic clamp, pneumatic manipulator and tool of the utility model.

[0023] In the figure: 1. Support cabinet; 2. First slider; 3. Support slide rail; 4. Linear drive module; 5. Ear strap grabbing robot; 6. Shearing cylinder; 7. Second slider; 8. Pay-off rack; 9. Working platform; 10. First clamping cylinder; 11. First clamping plate; 12. Second clamping plate; 13. Mounting plate; 14. Guide rod; 15. Cutting knife; 16. Third clamping plate; 17. Fourth clamping plate; 18. Second guide shaft; 19. First fixed plate; 20. Connecting frame; 21. Second clamping cylinder; 22. Strip clamping arm; 23. First guide shaft; 24. Guide seat; 25. Second fixed plate; 26. Connecting seat. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solution of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figures 1 to 6 The utility model provides a technical solution: a limiting device for feeding ear straps of masks, comprising a supporting cabinet 1, a working platform 9 is provided on the top of the supporting cabinet 1, and a supporting slide rail 3 is provided on the top of the working platform 9.

[0026] A second slider 7 is slidably provided on the support rail 3, a pneumatic clamp is provided on the top of the second slider 7, and a positioning mechanism for adjusting and setting the position of the second slider 7 is provided on the top of the second slider 7. The positioning mechanism is threadedly connected to a positioning bolt on the second slider 7, and the positioning bolt is screwed to abut against the surface of the support rail 3;

[0027] like Figure 3 and Figure 4 As shown, the pneumatic clamp includes a second fixing plate 25, a fourth clamping plate 17 is vertically mounted on the top of the second fixing plate 25, a third clamping plate 16 is provided on one side of the fourth clamping plate 17 in parallel, and the side of the third clamping plate 16 away from the fourth clamping plate 17 is connected to the second clamping cylinder 21, and the second clamping cylinder 21 is provided on the second fixing plate 25. When the second clamping cylinder 21 is extended, it can drive the third clamping plate 16 to be tightly attached to the surface of the fourth clamping plate 17. When the second clamping cylinder 21 is shortened, it drives the third clamping plate 16 away from the fourth clamping plate 17, leaving a certain gap between the two.

[0028] At least one second guide shaft 18 is vertically provided on one side of the third clamping plate 16 close to the fourth clamping plate 17. The second guide shaft 18 is not coaxial with the second clamping cylinder 21, that is, the second guide shaft 18 is installed at an eccentric position of the second clamping cylinder 21, and the second guide shaft 18 is movable through the fourth clamping plate 17. The second guide shaft 18 can prevent the third clamping plate 16 from deflecting and avoid the third clamping plate 16 from skewing.

[0029] Next, a first slider 2 is also slidably provided on the supporting slide rail 3, and a pneumatic manipulator is provided on the top of the first slider 2. The pneumatic manipulator includes a first fixed plate 19, and a first clamping plate 11 is vertically installed on the top of the first fixed plate 19. A second clamping plate 12 is provided on one side of the first clamping plate 11 in parallel. The side of the second clamping plate 12 away from the first clamping plate 11 is connected to the first clamping cylinder 10, and the first clamping cylinder 10 is provided on the first fixed plate 19; when the first clamping cylinder 10 is extended, it can drive the second clamping plate 12 to be tightly attached to the surface of the first clamping plate 11, and when the first clamping cylinder 10 is shortened, it drives the second clamping plate 12 away from the first clamping plate 11, so that there is a certain gap between the two;

[0030] At least one first guide shaft 23 is vertically connected to one side of the second clamping plate 12 close to the first clamping plate 11. The first guide shaft 23 and the first clamping cylinder 10 are not coaxial, that is, the first guide shaft 23 is installed at an eccentric position of the first clamping cylinder 10 and the first guide shaft 23 movably passes through the first clamping plate 11. The first guide shaft 23 can prevent the second clamping plate 12 from deflecting and avoid the third clamping plate 16 from skewing.

[0031] A strip clamping arm 22 is connected to the second clamping plate 12 and the first clamping plate 11 on one side close to the second fixed plate 25. When the first clamping cylinder 10 moves, it can drive the second clamping plate 12 and one of the strip clamping arms 22 to reciprocate back and forth, so that the two strip clamping arms 22 are opened and closed under the drive of the first clamping cylinder 10; Figure 6 As shown, one end of the strip-shaped clamping arm 22 close to the second fixing plate 25 is bent into an "L" shape, and a rubber pad is provided at the end of the "L".

[0032] The support cabinet 1 is also provided with a linear drive module 4, which is located on one side of the support rail 3, and the support rail 3 and the linear drive module 4 are parallel. The linear drive module 4 is a linear drive mechanism such as a screw linear drive or a linear motor, an electric telescopic rod, or a linear cylinder. Figure 3 As shown, the first slider 2 is connected to the linear drive module 4 via a connecting frame 20 , so that the first slider 2 moves back and forth toward the pneumatic clamp under the drive of the linear drive module 4 .

[0033] It should be noted that in actual production, Figure 1 and Figure 2 As shown, the limit device proposed in this application is provided with an ear strap grabbing manipulator 5 on one side, and a wire pay-off rack 8 is also provided on one side of the supporting cabinet 1. The rolled ear strap is placed on the wire pay-off rack 8. The specific operation process is as follows:

[0034] 1. If Figure 1 As shown, the free end of the ear strap is pulled out and placed between the third clamping plate 16 and the fourth clamping plate 17 and clamped by the second clamping cylinder 21;

[0035] 2. In the initial state, when the ear strap is first placed between the third and fourth splints 16 and 17, the free end of the ear strap should be outside the third and fourth splints 16 and 17 to facilitate the robot to grab it;

[0036] 3. Control the linear drive module 4 to drive the first slider 2 to move toward the second slider 7. At this time, the two strip clamping arms 22 are in the open state. When the first slider 2 moves toward the second slider 7 to the preset position, the free end of the ear strap is placed within the ends of the two strip clamping arms 22. Control the first clamping cylinder 10 to drive the two strip clamping arms 22 to close, so that the strip clamping arms 22 clamp the free end of the ear strap;

[0037] 4. Then control the linear drive module 4 to drive the first slider 2 back to its initial position. The earband is now stretched, and the stretched length is the length that the earband grasping robot 5 needs to grasp. In other words, the length of the earband at this time is the length welded to the mask. Then control the second clamping cylinder 21 to make the third clamping plate 16 and the fourth clamping plate 17 clamp the earband.

[0038] 5. It should be noted that the bar clamp arm 22 stretches the ear strap to limit it once, that is, the bar clamp arm 22 can pull the ear strap once when it reciprocates once, and the length of the ear strap is consistent each time it limits the ear strap. Figure 1 As shown, the two free ends of the ear strap grasping manipulator 5 are controlled to clamp the straightened ear strap, and then the ear strap near the end of the second slider 7 is cut off by a tool provided on one side of the second fixing plate 25, and then the strip clamping arm 22 releases the end of the ear strap. At this time, the ear strap can be clamped in the ear strap grasping manipulator 5;

[0039] 6. If Figure 2 As shown, the ear strap grabbing manipulator 5 then drives the ear strap to bend 90°, and the ear strap grabbing manipulator 5 places the two free ends of the ear strap on the edge of the mask, and then welds and fixes them by an ultrasonic welding machine.

[0040] It should be noted that there is a gap between the cutter and the third and fourth plates 16 and 17. This gap allows the free end of the ear strap to escape outside the third and fourth plates 16 and 17 when the ear strap is cut off once, making it easier for the strip clamp arm 22 to grab it next time.

[0041] The following is a detailed description of the tool:

[0042] The tool includes a mounting plate 13 connected to the second fixing plate 25. A shearing cylinder 6 is provided on the top of the mounting plate 13. The telescopic shaft of the shearing cylinder 6 is located on one side of the third clamping plate 16. A cutting knife 15 is installed on the end of the telescopic shaft. The cutting knife 15 is an ultrasonic cutting knife, which makes the cutting knife 15 sharper.

[0043] like Figure 4 and Figure 5 As shown, one side of the telescopic shaft is connected to a connecting seat 26, and a guide rod 14 parallel to the telescopic shaft is installed on the connecting seat 26. The guide rod 14 is movably placed in the guide seat 24, and the guide seat 24 is installed on the mounting plate 13. The guide rod 14 can make the cutting knife 15 more stable;

[0044] Specifically, during use, after the ear band grabbing robot 5 clamps the ear band, the cutting knife 15 approaches the ear band under the drive of the shearing cylinder 6, allowing the cutting knife 15 to cut the ear band, and then the cutting knife 15 stays next to the ear band under the drive of the shearing cylinder 6, waiting for the next cutting.

[0045] Based on the above embodiment, further optimization can be performed. A controller is provided in the support cabinet 1. The controller is respectively connected to the linear drive module 4, the shear cylinder 6, the first clamping cylinder 10, and the second clamping cylinder 21. The controller is a PLC logic controller, a host or a PCB control board. The controller can automatically control each actuator, thereby realizing automatic control and automatic operation.

[0046] Finally, the pneumatic clamp and the pneumatic manipulator are both installed on the slider, so that the pneumatic clamp and the pneumatic manipulator can be adjusted along the supporting slide rail 3, that is, when the distance between the first slider 2 and the second slider 7 increases, the side length of the ear strap that is pulled to limit the position increases, and when the distance between the first slider 2 and the second slider 7 decreases, the length of the ear strap that is pulled to limit the position decreases.

[0047] Finally, it should be noted that the ear strap passes through the top of the second guide shaft 18 and the first guide shaft 23, that is, the second guide shaft 18 and the first guide shaft 23 support the ear strap to prevent the ear strap from falling onto the fixed plate, and the second guide shaft 18 and the first guide shaft 23 are always located in the fourth clamping plate 17 and the first clamping plate 11 and will not fall out.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A limiting device for feeding ear straps of masks, comprising a supporting cabinet (1), a working platform (9) being provided on the top of the supporting cabinet (1), characterized in that: A supporting slide rail (3) and a linear drive module (4) are provided on the top of the working platform (9), and the two are parallel; A second slider (7) is slidably provided on the supporting slide rail (3), a pneumatic clamp is provided on the top of the second slider (7), and a positioning mechanism for adjusting and setting the position of the second slider (7) is provided on the top of the second slider (7); A first slider (2) is also slidably provided on the support rail (3), and a pneumatic manipulator is provided on the top of the first slider (2). The first slider (2) is connected to the linear drive module (4) via a connecting frame (20), so that the first slider (2) reciprocates toward the pneumatic clamp under the drive of the linear drive module (4).

2. The limiting device for feeding ear straps of a mask according to claim 1, characterized in that: The positioning mechanism is threadedly connected to a positioning bolt on the second sliding block (7), and the positioning bolt is screwed to abut against the surface of the supporting slide rail (3).

3. The limiting device for feeding ear straps of a mask according to claim 1, characterized in that: The pneumatic clamp comprises a second fixing plate (25), and a fourth clamping plate (17) is vertically mounted on the top of the second fixing plate (25); A third clamping plate (16) is provided in parallel on one side of the fourth clamping plate (17); a side of the third clamping plate (16) away from the fourth clamping plate (17) is connected to a second clamping cylinder (21); and the second clamping cylinder (21) is provided on a second fixed plate (25); At least one second guide shaft (18) is vertically provided on one side of the third clamping plate (16) close to the fourth clamping plate (17). The second guide shaft (18) is not coaxial with the second clamping cylinder (21), and the second guide shaft (18) movably passes through the fourth clamping plate (17).

4. The limiting device for feeding ear straps of a mask according to claim 3, characterized in that: The pneumatic manipulator comprises a first fixing plate (19), and a first clamping plate (11) is vertically mounted on the top of the first fixing plate (19); A second clamping plate (12) is provided in parallel on one side of the first clamping plate (11), and a side of the second clamping plate (12) away from the first clamping plate (11) is connected to a first clamping cylinder (10), and the first clamping cylinder (10) is provided on a first fixing plate (19); At least one first guide shaft (23) is vertically connected to one side of the second clamping plate (12) close to the first clamping plate (11); the first guide shaft (23) and the first clamping cylinder (10) are not coaxial, and the first guide shaft (23) movably passes through the first clamping plate (11); Strip clamping arms (22) are respectively connected to one side of the second clamping plate (12) and the first clamping plate (11) close to the second fixed plate (25). The two strip clamping arms (22) are opened and closed under the drive of the first clamping cylinder (10).

5. The limiting device for feeding ear straps of a mask according to claim 4, characterized in that: A cutter for cutting the ear strap is provided on one side of the second fixing plate (25).

6. The limiting device for feeding ear straps of a mask according to claim 5, characterized in that: The tool includes a mounting plate (13) connected to a second fixing plate (25); A shearing cylinder (6) is provided on the top of the mounting plate (13), a telescopic shaft of the shearing cylinder (6) is located on one side of the third clamping plate (16), and a cutting knife (15) is installed on the end of the telescopic shaft; One side of the telescopic shaft is connected with a connecting seat (26), a guide rod (14) parallel to the telescopic shaft is installed on the connecting seat (26), the guide rod (14) is movably placed in the guide seat (24), and the guide seat (24) is installed on the mounting plate (13).

7. The limiting device for feeding ear straps of a mask according to claim 4, characterized in that: One end of the strip-shaped clamping arm (22) close to the second fixing plate (25) is bent into an "L" shape, and a rubber pad is provided at the end of the "L".

8. The limiting device for feeding ear straps of a mask according to claim 1, characterized in that: The cutting knife (15) is an ultrasonic cutting knife.

9. The limiting device for feeding ear straps of a mask according to claim 6, characterized in that: A controller is provided in the supporting cabinet (1), and the controller is respectively connected to the linear drive module (4), the shearing cylinder (6), the first clamping cylinder (10), and the second clamping cylinder (21).

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