Mask welding device

Abstract

The utility model discloses a mask welding device, which belongs to the technical field of welding devices and comprises a working table, a boss fixedly connected to the top of the working table, a rotary table rotatably connected to the middle of the boss, a driving assembly arranged on the working table and in transmission connection with the rotary table, a first lifting assembly arranged on the working table, and a connecting rod fixedly connected to the output end of the first lifting assembly. The bottom end of the connecting rod is rotationally connected with a pressing block, and the pressing block is located over the rotary table. A second lifting assembly is arranged on the workbench, two ultrasonic welding heads are arranged at the output end of the second lifting assembly, and the ultrasonic welding heads are located over the boss; an L-shaped sliding groove is formed in the edge side of the boss, an L-shaped positioning plate is slidably connected into the L-shaped sliding groove, a containing groove is formed in the top of the workbench, a plurality of first air cylinders are fixedly connected into the containing groove, and the output ends of the first air cylinders are fixedly connected with the L-shaped positioning plate. Through the L-shaped positioning plate and the pressing block, the accuracy of the placing position of the protective layer can be improved, and the phenomenon of welding dislocation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a mask welding device. Background Art

[0002] Masks are a type of sanitary and epidemic prevention product. Masks include a protective layer and ear straps. During the production process, an ultrasonic welding machine is usually used to weld and fix the protective layer and the ear straps. The principle is to transmit ultrasonic vibrations to the material to be welded, and the vibration energy is converted into heat energy through friction, so that the area to be welded is melted. After the vibration stops, the pressure is maintained to solidify the molten material at the bonding surface, completing the welding process.

[0003] When using the ultrasonic welding machine, the protective layer needs to be placed at the designated position of the workbench, the two ends of the ear straps need to be aligned with one side of the protective layer, and the protective layer and the two ends of the ear straps need to be pressed by the ultrasonic welding head to achieve the welding of the mask. Since a position indicator block is set at the bottom of the workbench, when placing the protective layer, just place the end that needs to be welded at the indicator block, but manual visual alignment is required when placing it. This method cannot accurately guide the position of the protective layer, making the position of the protective layer prone to deviation, reducing the production quality of the mask.

[0004] Therefore, a mask welding device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a mask welding device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme: The utility model provides a mask welding device, comprising a workbench, a boss is fixedly connected to the top of the workbench, a turntable is rotatably connected to the middle of the boss, a driving assembly is arranged on the workbench and is transmission-connected to the turntable, a first lifting assembly is arranged on the workbench, a connecting rod is fixedly connected to the output end of the first lifting assembly, a pressure block is rotatably connected to the bottom end of the connecting rod, and the pressure block is located directly above the turntable; a second lifting assembly is arranged on the workbench, two ultrasonic welding joints are arranged at the output end of the second lifting assembly, and the ultrasonic welding joints are located directly above the boss;

[0007] An L-shaped slide groove is provided at the side of the boss, an L-shaped positioning plate is slidably connected in the L-shaped slide groove, a receiving groove is provided on the top of the workbench, a plurality of first cylinders are fixedly connected in the receiving groove, the output ends of the first cylinders extend into the L-shaped slide groove and are fixedly connected to the L-shaped positioning plate, a feeding mechanism is provided on the workbench, and the ultrasonic welding head is located between the feeding mechanism and the turntable.

[0008] Preferably, a top plate is fixedly connected to the top of the workbench, and the first lifting assembly includes a second cylinder fixedly connected to the top plate, and the output end of the second cylinder is fixedly connected to the connecting rod; the second lifting assembly includes two third cylinders fixedly connected to the top plate, and the output ends of the two third cylinders are respectively fixedly connected to the two ultrasonic welding joints.

[0009] Preferably, the ultrasonic welding joint includes an ultrasonic transducer, the two ultrasonic transducers are respectively fixedly connected to the output ends of the two third cylinders, the ultrasonic transducer is fixedly connected with a variable amplitude rod, the variable amplitude rod is fixedly connected with a welding head, the two welding heads are located directly above the boss, and the welding head is located between the turntable and the feeding mechanism; two ultrasonic generators are fixedly connected to the workbench, and the two ultrasonic generators are respectively electrically connected to the two ultrasonic transducers.

[0010] Preferably, the feeding mechanism includes a stretching assembly, a cutting assembly and a feeding assembly, the stretching assembly includes a fourth cylinder and a fifth cylinder fixedly connected to the workbench, the fourth cylinder is arranged parallel to the workbench, the output end of the fourth cylinder is fixedly connected to the first electric clamp, the fifth cylinder is arranged vertically to the workbench, the output end of the fifth cylinder is fixedly connected to the pressure plate, the top of the workbench is fixedly connected to a bottom plate, the bottom plate is located directly below the pressure plate, and the first electric clamp is located between the fourth cylinder and the pressure plate.

[0011] Preferably, the cutting assembly includes a sixth cylinder fixedly connected to the top of the workbench, the sixth cylinder is vertically arranged to the workbench, and a blade is fixedly connected to the output end of the sixth cylinder, and the blade is located between the fourth cylinder and the pressure plate.

[0012] Preferably, the feeding assembly includes two second motors fixedly connected to the top plate, the output shaft of the second motor is fixedly connected to a seventh cylinder arranged perpendicular to the workbench, the output end of the seventh cylinder is fixedly connected to a second electric clamp, the two clamping jaws of the second electric clamp are respectively fixedly connected to inclined clamping plates, and the two second electric clamps are located between the fourth cylinder and the blade.

[0013] Preferably, a through slot is formed on the boss, the turntable is rotatably connected to the through slot, and the driving assembly includes a first motor fixedly embedded on the workbench, the output shaft of the first motor extends into the through slot and is fixedly connected to the turntable.

[0014] Preferably, a pressing groove is provided on the top of the bottom plate, and the pressing plate is slidably connected to the pressing groove.

[0015] The utility model discloses the following technical effects: the L-shaped positioning plate is extended out of the L-shaped chute by the first cylinder, the two side edges at one corner of the protective layer are aligned with the two inner sides of the L-shaped positioning plate, the first lifting assembly drives the pressing block to descend, presses the protective layer, and then retracts the L-shaped positioning plate into the L-shaped chute, and the two ends of the ear band are placed on one side of the protective layer by the feeding mechanism, the ultrasonic welding head is started to weld the ear band to the protective layer, and then the turntable is started to drive the protective layer to rotate 180 degrees, and the ear band is welded on the other side of the protective layer. The present application can realize the welding of the protective layer and the ear band in the mask, and the L-shaped positioning plate and the pressing block can improve the accuracy of the placement of the protective layer, reduce the welding misalignment phenomenon, and improve the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is an axonometric drawing of the utility model;

[0018] Figure 2 It is an exploded view of the workbench, boss and turntable in the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the ultrasonic welding head, the feeding assembly and the first lifting assembly in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the middle pressure plate and the bottom plate of the utility model.

[0021] In the figure: 1. workbench; 2. boss; 3. turntable; 4. connecting rod; 5. pressure block; 6. L-shaped slide; 7. L-shaped positioning plate; 8. accommodating groove; 9. first cylinder; 10. top plate; 11. second cylinder; 12. third cylinder; 13. ultrasonic transducer; 14. amplitude transformer; 15. welding head; 16. fourth cylinder; 17. fifth cylinder; 18. first electric clamp; 19. pressure plate; 20. bottom plate; 21. sixth cylinder; 22. blade; 23. second motor; 24. seventh cylinder; 25. second electric clamp; 26. clamp; 27. through groove; 28. first motor; 29. ​​pressure groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-Figure 4 The utility model provides a mask welding device, including a workbench 1, a boss 2 is fixedly connected to the top of the workbench 1, a turntable 3 is rotatably connected to the middle of the boss 2, the top of the turntable 3 is flush with the top of the boss 2, a driving assembly connected to the turntable 3 is arranged on the workbench 1, a first lifting assembly is arranged on the workbench 1, a connecting rod 4 is fixedly connected to the output end of the first lifting assembly, a pressing block 5 is rotatably connected to the bottom end of the connecting rod 4, and the pressing block 5 is located directly above the turntable 3; a second lifting assembly is arranged on the workbench 1, and two ultrasonic welding joints are arranged at the output end of the second lifting assembly, and the ultrasonic welding joints are located directly above the boss 2;

[0025] An L-shaped chute 6 is provided at the side of the boss 2, and an L-shaped positioning plate 7 is slidably connected in the L-shaped chute 6. A receiving groove 8 is provided on the top of the workbench 1, and a plurality of first cylinders 9 are fixedly connected in the receiving groove 8. The output end of the first cylinder 9 extends into the L-shaped chute 6 and is fixedly connected to the L-shaped positioning plate 7. A feeding mechanism is provided on the workbench 1, and the ultrasonic welding head is located between the feeding mechanism and the turntable 3.

[0026] The cross-section of the boss 2 is rectangular, and the L-shaped slide groove 6 is opened at a corner of the boss 2. The L-shaped positioning plate 7 is extended out of the L-shaped slide groove 6 by the first cylinder 9, and the two side edges at a corner of the protective layer are aligned with the two inner side edges of the L-shaped positioning plate 7. The pressing block 5 is driven down by the first lifting assembly to press the protective layer. At this time, the pressing block 5 and the turntable 3 are just located in the middle of the protective layer, and then the L-shaped positioning plate 7 is retracted into the L-shaped slide groove 6, and the two ends of the ear band are placed on one side of the protective layer through the feeding mechanism, and the ultrasonic welding head is started to weld the ear band to the protective layer, and then the turntable 3 is started. There is friction between the protective layer and the turntable 3 and the pressing block 5, thereby driving the protective layer to rotate, and at the same time driving the pressing block 5 to rotate, so that it stops after rotating 180 degrees, so that the ear band on the other side of the protective layer can be welded.

[0027] Further optimizing the scheme, a top plate 10 is fixedly connected to the top of the workbench 1, the first lifting assembly includes a second cylinder 11 fixedly connected to the top plate 10, and the output end of the second cylinder 11 is fixedly connected to the connecting rod 4; the second lifting assembly includes two third cylinders 12 fixedly connected to the top plate 10, and the output ends of the two third cylinders 12 are respectively fixedly connected to the two ultrasonic welding joints;

[0028] The second cylinder 11 is started to drive the pressing block 5 on the connecting rod 4 to move up and down, thereby achieving the compression or loosening of the protective layer.

[0029] Further optimization scheme, the ultrasonic welding head includes an ultrasonic transducer 13, two ultrasonic transducers 13 are respectively fixedly connected to the output ends of the two third cylinders 12, a horn 14 is fixedly connected to the ultrasonic transducer 13, a welding head 15 is fixedly connected to the horn 14, the two welding heads 15 are located directly above the boss 2, and the welding head 15 is located between the turntable 3 and the feeding mechanism; two ultrasonic generators (not shown in the figure) are fixedly connected to the workbench 1, and the two ultrasonic generators are respectively electrically connected to the two ultrasonic transducers 13;

[0030] When welding, the welding head 15 is driven down by the third cylinder 12 and pressed on one end of the ear band and the protective layer. The ultrasonic generator generates a high-frequency electrical signal, and the ultrasonic transducer 13 converts the electrical signal into ultrasonic vibration. The vibration is amplified and transmitted to the welding head 15 through the horn 14. The welding head 15 concentrates the ultrasonic energy at the welding position, produces a welding effect through the friction and heat of the materials, and realizes the welding of the ear band and the protective layer.

[0031] Further optimized solution, the feeding mechanism includes a stretching assembly, a cutting assembly and a feeding assembly, the stretching assembly includes a fourth cylinder 16 and a fifth cylinder 17 fixedly connected to the workbench 1, the fourth cylinder 16 is arranged parallel to the workbench 1, the output end of the fourth cylinder 16 is fixedly connected to a first electric clamp 18, the fifth cylinder 17 is arranged vertically to the workbench 1, the output end of the fifth cylinder 17 is fixedly connected to a pressing plate 19, the top of the workbench 1 is fixedly connected to a bottom plate 20, the bottom plate 20 is located directly below the pressing plate 19, and the first electric clamp 18 is located between the fourth cylinder 16 and the pressing plate 19;

[0032] A pressing groove 29 is provided on the top of the bottom plate 20, and the pressing plate 19 is slidably connected to the pressing groove 29;

[0033] The cutting assembly includes a sixth cylinder 21 fixedly connected to the top of the workbench 1. The sixth cylinder 21 is vertically arranged with the workbench 1. A blade 22 is fixedly connected to the output end of the sixth cylinder 21. The blade 22 is located between the fourth cylinder 16 and the pressing plate 19.

[0034] The feeding assembly includes two second motors 23 fixedly connected to the top plate 10, and the output shaft of the second motor 23 is fixedly connected to a seventh cylinder 24 vertically arranged to the workbench 1, and the output end of the seventh cylinder 24 is fixedly connected to a second electric clamp 25, and the two clamping jaws of the second electric clamp 25 are respectively fixedly connected to inclined clamping plates 26, and the two second electric clamps 25 are located between the fourth cylinder 16 and the blade 22.

[0035] To further optimize the solution, a through slot 27 is provided on the boss 2, the turntable 3 is rotatably connected to the through slot 27, and the driving assembly includes a first motor 28 fixedly embedded on the workbench 1, and the output shaft of the first motor 28 extends into the through slot 27 and is fixedly connected to the turntable 3.

[0036] When the utility model is in use, the L-shaped positioning plate 7 is extended out of the L-shaped chute 6 by the first cylinder 9, and the two side edges at one corner of the protective layer are aligned with the two inner side edges of the L-shaped positioning plate 7, and the second cylinder 11 is started to drive the pressing block 5 to descend, and the protective layer is pressed, and then the L-shaped positioning plate 7 is retracted into the L-shaped chute 6, and the ear band is wound on the reel (not shown in the figure) and is transmitted and oriented by the transmission wheel (not shown in the figure), and the ear band first enters the pressing groove 29, and the first electric clamping jaw 18 approaches the pressing plate 19 and clamps the end of the ear band, and then the first electric clamping jaw 18 is driven by the fourth cylinder 16 to move away from the pressing plate 19, so as to stretch the ear band, and stop after stretching to the specified length, and the second electric clamping jaw 25 is driven to descend by the seventh cylinder 24, Then, the second electric clamp 25 is used to clamp the ear band with the clamp plate 26. The fifth cylinder 17 drives the pressing plate 19 to descend to press the ear band in the pressing groove 29. The sixth cylinder 21 drives the blade 22 to descend to cut the ear band. The first electric clamp 18 releases one end of the ear band. Then, the second motor 23 is started to drive the second electric clamp 25 to rotate 90 degrees. The rotation directions of the two second electric clamps 25 are opposite. The end of the clamp plate 26 is rotated to one side of the protective layer. At this time, the two ends of the ear band exposed on the clamp plate 26 are respectively located at the parts of the protective layer to be welded. The third cylinder 12 is started to drive the welding head 15 to descend to achieve welding. After welding one side, the first motor 28 is started to drive the protective layer to rotate 180 degrees to weld the other side of the protective layer.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A mask welding device, characterized in that: The invention comprises a workbench (1), wherein a boss (2) is fixedly connected to the top of the workbench (1), a turntable (3) is rotatably connected to the middle of the boss (2), a driving assembly is arranged on the workbench (1) and is transmission-connected to the turntable (3), a first lifting assembly is arranged on the workbench (1), a connecting rod (4) is fixedly connected to the output end of the first lifting assembly, a pressure block (5) is rotatably connected to the bottom end of the connecting rod (4), and the pressure block (5) is located directly above the turntable (3); a second lifting assembly is arranged on the workbench (1), two ultrasonic welding joints are arranged at the output end of the second lifting assembly, and the ultrasonic welding joints are located directly above the boss (2); An L-shaped slide groove (6) is provided on the side of the boss (2), and an L-shaped positioning plate (7) is slidably connected in the L-shaped slide groove (6). A receiving groove (8) is provided on the top of the workbench (1), and a plurality of first cylinders (9) are fixedly connected in the receiving groove (8). The output ends of the first cylinders (9) extend into the L-shaped slide groove (6) and are fixedly connected to the L-shaped positioning plate (7). A feeding mechanism is provided on the workbench (1), and the ultrasonic welding head is located between the feeding mechanism and the turntable (3).

2. The mask welding device according to claim 1, characterized in that: The top of the workbench (1) is fixedly connected to a top plate (10); the first lifting assembly comprises a second cylinder (11) fixedly connected to the top plate (10); the output end of the second cylinder (11) is fixedly connected to the connecting rod (4); the second lifting assembly comprises two third cylinders (12) fixedly connected to the top plate (10); the output ends of the two third cylinders (12) are respectively fixedly connected to the two ultrasonic welding joints.

3. The mask welding device according to claim 2, characterized in that: The ultrasonic welding head comprises an ultrasonic transducer (13), the two ultrasonic transducers (13) are respectively fixedly connected to the output ends of the two third cylinders (12), the ultrasonic transducer (13) is fixedly connected to a variable amplitude rod (14), the variable amplitude rod (14) is fixedly connected to a welding head (15), the two welding heads (15) are located directly above the boss (2), and the welding head (15) is located between the turntable (3) and the feeding mechanism; the workbench (1) is fixedly connected to two ultrasonic generators, and the two ultrasonic generators are respectively electrically connected to the two ultrasonic transducers (13).

4. The mask welding device according to claim 3, characterized in that: The feeding mechanism comprises a stretching assembly, a cutting assembly and a feeding assembly. The stretching assembly comprises a fourth cylinder (16) and a fifth cylinder (17) fixedly connected to the workbench (1). The fourth cylinder (16) is arranged in parallel with the workbench (1). The output end of the fourth cylinder (16) is fixedly connected to a first electric clamp (18). The fifth cylinder (17) is arranged vertically to the workbench (1). The output end of the fifth cylinder (17) is fixedly connected to a pressing plate (19). The top of the workbench (1) is fixedly connected to a bottom plate (20). The bottom plate (20) is located directly below the pressing plate (19). The first electric clamp (18) is located between the fourth cylinder (16) and the pressing plate (19).

5. The mask welding device according to claim 4, characterized in that: The cutting assembly comprises a sixth cylinder (21) fixedly connected to the top of the workbench (1), the sixth cylinder (21) being arranged vertically to the workbench (1), a blade (22) being fixedly connected to the output end of the sixth cylinder (21), and the blade (22) being located between the fourth cylinder (16) and the pressure plate (19).

6. The mask welding device according to claim 5, characterized in that: The feeding assembly comprises two second motors (23) fixedly connected to the top plate (10); a seventh cylinder (24) vertically arranged to the workbench (1) is fixedly connected to the output shaft of the second motor (23); a second electric clamp (25) is fixedly connected to the output end of the seventh cylinder (24); two clamping jaws of the second electric clamp (25) are respectively fixedly connected to inclined clamping plates (26); the two second electric clamps are located between the fourth cylinder (16) and the blade (22).

7. The mask welding device according to claim 1, characterized in that: The boss (2) is provided with a through slot (27), the turntable (3) is rotatably connected to the through slot (27), and the drive assembly comprises a first motor (28) fixedly embedded on the workbench (1), the output shaft of the first motor (28) extends into the through slot (27) and is fixedly connected to the turntable (3).

8. The mask welding device according to claim 4, characterized in that: A pressing groove (29) is provided on the top of the bottom plate (20), and the pressing plate (19) is slidably connected to the pressing groove (29).

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