A mask ear strap welding device

Abstract

A mask ear strap welding device relates to the technical field of mask production equipment, comprising a welding table, a vertically lifting lifting plate provided on the top of the welding table, a detachable middle pressure plate provided at the bottom of the lifting plate, a detachable first transverse cylindrical linear slide provided on the top of the middle pressure plate, two first transverse sliders provided on the sliding sleeve of the first transverse cylindrical linear slide, opposite ends of the first transverse sliders provided with detachably arranged first longitudinal cylindrical linear slides, a first longitudinal cylindrical linear slide provided on the sliding sleeve of the first longitudinal cylindrical linear slide, a detachable corner pressure plate provided on the end of the first longitudinal slider, one corner of the corner pressure plate being an arc-shaped structure, the bottom surface of the corner pressure plate being flush with the bottom surface of the middle pressure plate, and a connecting groove provided inside the corner pressure plate. The present invention solves the problems of low accuracy of ear strap welding position of the existing mask ear strap welding device; the problem of multiple derivative processes; the problem of low welding efficiency; and the problem of poor versatility.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production equipment, in particular to a mask ear strap welding device. Background Art

[0002] When respiratory infectious diseases are prevalent or when working in an environment polluted by dust, germs, dust, etc. in the air can enter the human lungs through breathing and cause serious damage to the body. Wearing a mask can play a certain filtering role. The mask fits tightly to the face, so that germs, dust, etc. cannot easily leak in. There are two ear straps on the mask, which can be fixed to the head by putting the ear straps on the ears.

[0003] When welding ear straps to masks, single-point welding and double-point welding are commonly used. Single-point welding involves welding the four points where the ear strap contacts the mask in sequence. Double-point welding involves welding the two points where the ear strap contacts the mask in one pass, completing all four weld points in two passes.

[0004] The existing mask ear strap welding device gradually exposed its shortcomings during use, mainly in the following aspects:

[0005] First, the accuracy of the ear strap welding position is low. Specifically, when welding the ear strap, the operator first places one side of the mask under the ultrasonic welding head assembly, then lowers the cut ear strap until its two ends contact the mask, and then the ultrasonic welding head assembly drops and welds the ear strap to the mask. Finally, the operator rotates the mask and welds the ear strap on the other side. When placing the mask, the staff adjusts the position of the mask by the relative position of the welding head of the ultrasonic welding head assembly and the edge of the mask. The placement of the mask can easily lead to deviations in the welding position, that is, the welding positions of the ear straps on both sides of the same mask and the ear straps of different masks are different, which affects the consistency and yield of the product.

[0006] Second, there are many derivative processes. Specifically, after the ultrasonic welding head assembly welds the ear strap line to the mask, the welding head of the ultrasonic welding head assembly often sticks to the mask. When the ultrasonic welding head assembly is reset, the operator needs to press the mask to separate it from the welding head. In order to prevent the lifting of the ultrasonic welding head assembly from causing damage to the operator's palm, the operator needs to press the middle position of the mask. Therefore, when the ultrasonic welding head assembly is reset, one side of the mask is lifted up, and the nose bridge in the mask will bend, which will cause the entire mask to bend. After the mask is welded to the ear strap line, the mask needs to be leveled. Therefore, the existing ear strap line welding equipment has many derivative processes, which not only increases production costs, but also reduces production efficiency.

[0007] Third, the welding efficiency is low. Specifically, when welding the ear strap line, one side of the mask is welded first, and then the position of the mask is adjusted to weld the other side. The welding operation is complicated, which leads to low welding efficiency.

[0008] Fourth, welding equipment has poor versatility. Specifically, the sizes of masks are divided into adult sizes and children's sizes, and the children's sizes are divided into multiple types according to the applicable age, and the adult sizes are divided into multiple types according to the face shape. The fixed positions of the ear straps of masks of different sizes are different, and the existing ear strap welding equipment cannot be flexibly adjusted to adapt to masks of different specifications, resulting in the need to replace the corresponding welding equipment when switching production. This limitation increases the equipment investment cost.

[0009] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Summary of the Invention

[0010] In response to the shortcomings of the prior art, the present invention aims to provide a mask ear strap welding device, which can quickly and accurately position the mask, with minimal deviation in the relative position of the mask and the ear strap, effectively avoiding common problems such as offset and misalignment in traditional welding, improving the accuracy of the ear strap welding position, and significantly improving the consistency and yield rate of the product.

[0011] After completing the welding of the ear strap line, this device can effectively prevent the mask from being lifted by the welding head and causing the nose bridge to bend. During the welding process, the mask remains flat and does not require subsequent leveling treatment, reducing the derivative processes caused by deformation. This improvement not only reduces production costs but also improves production efficiency.

[0012] The device can complete the precise welding of two ear straps at one time while changing the mask, greatly improving the welding efficiency.

[0013] The device can weld ear straps for masks of different sizes. Through adjustable components, key parameters such as positioning position, welding position, and pulling (cutting) wire length can be adjusted to ensure that masks of various sizes can be accurately welded to the ear straps, greatly improving the versatility of the equipment.

[0014] In order to solve the above problems, the present invention provides the following technical solutions:

[0015] A mask ear strap line welding device comprises a welding table, the top of the welding table is vertically lifted and provided with a lifting plate, the bottom of the lifting plate is detachably provided with a middle pressure plate, the top of the middle pressure plate is detachably provided with a first transverse cylindrical linear slide, the first transverse cylindrical linear slide is slidingly sleeved with two first transverse sliders, the opposite ends of the first transverse slider are provided with a detachably arranged first longitudinal cylindrical linear slide, the sliding sleeve of the first longitudinal cylindrical linear slide is provided with a first longitudinal slider, the end of the first longitudinal slider is detachably provided with a corner pressure plate, one corner of the corner pressure plate is an arc structure, the bottom surface of the corner pressure plate is flush with the bottom surface of the middle pressure plate, a connecting groove is provided inside the corner pressure plate, and a plurality of through holes connected to the connecting groove are provided at the bottom of the corner pressure plate, and the connecting groove is connected to an external negative pressure air source. The top of the welding table is provided with welding components and wire pulling components at positions on both sides of the lifting plate.

[0016] As an optimized solution, the welding assembly includes an adjustment plate that is vertically lifted and lowered, and a second horizontal cylindrical linear slide is detachably provided at the bottom of the adjustment plate. A second horizontal slider is slidingly sleeved on the second horizontal cylindrical linear slide, and the opposite ends of the second horizontal slider are each provided with a detachably provided second longitudinal cylindrical linear slide, and a second longitudinal slider is slidingly sleeved on the second longitudinal cylindrical linear slide. A welding plate and a tangent plate are detachably provided at the end of the second longitudinal slider, and an ultrasonic welding head assembly that is vertically lifted and lowered and a welding pneumatic clamp that is rotated along a plumb line are provided at the bottom of the welding plate, and a cutting knife is vertically lifted and lowered at the bottom of the tangent plate.

[0017] As an optimized solution, the wire pulling assembly includes two third transverse cylindrical linear slides that are detachably connected to the welding table, the two third transverse cylindrical linear slides are respectively located on both sides of the adjustment plate, the sliding sleeve on the third transverse cylindrical linear slide is provided with a third transverse slider, the top of the two third transverse sliders are respectively provided with a detachable first mounting plate and a second mounting plate, the end of the first mounting plate is provided with a wire pulling pneumatic clamp for horizontal movement, the end of the second mounting plate is provided with an L-shaped plate for horizontal movement, the top of the L-shaped plate is provided with a detachable wire clamping pneumatic clamp and a fixed wire threading tube, and the end of the second mounting plate is penetrated by a wire threading hole.

[0018] As an optimized solution, the first transverse cylindrical linear slide, the first longitudinal cylindrical linear slide, the second transverse cylindrical linear slide, the second longitudinal cylindrical linear slide and the third transverse cylindrical linear slide are all engraved with scale lines, and the first transverse slider, the first longitudinal slider, the second transverse slider, the second longitudinal slider and the third transverse slider are all provided with stop bolts threadedly connected to them.

[0019] As an optimized solution, a first vertical plate and two second vertical plates are fixedly provided on the top of the welding table, and the lifting plate and the adjustment plate are vertically slidably connected to the first vertical plate and the second vertical plate respectively. A first lifting and telescopic cylinder and two second lifting and telescopic cylinders are fixedly provided on the top of the welding table, and the telescopic ends of the first lifting and telescopic cylinder and the second lifting and telescopic cylinder are fixedly connected to the lifting plate and the adjustment plate respectively.

[0020] As an optimized solution, the first longitudinal cylindrical linear slide rail and the second longitudinal cylindrical linear slide rail are detachably connected to the first transverse slider and the second transverse slider via the first support plate and the second support plate, respectively.

[0021] As an optimized solution, the middle pressure plate is detachably connected to the lifting plate through two connecting plates, and the corner pressure plates are detachably connected to the first longitudinal slider through a positioning plate.

[0022] As an optimized solution, a multi-pipeline air exhaust is fixedly provided at the bottom of the lifting plate, one of the ports of the multi-pipeline air exhaust is connected to the external negative pressure air source, and the remaining ports of the multi-pipeline air exhaust are connected to the connecting groove in the corner pressure plate through a ventilation pipe.

[0023] As an optimized solution, a driving motor and an electric telescopic cylinder are fixedly provided on the top of the welding plate. The output end of the driving motor and the telescopic end of the electric telescopic cylinder both pass through the welding plate and are detachably connected to the welding pneumatic clamp and the ultrasonic welding head assembly respectively. A driving telescopic cylinder is fixedly provided on the top of the tangent plate. The telescopic end of the driving telescopic cylinder passes through the tangent plate and is detachably connected to the cutting knife.

[0024] As an optimized solution, a control telescopic cylinder and a pneumatic telescopic cylinder are fixed to the ends of the first mounting plate and the second mounting plate respectively. The telescopic ends of the control telescopic cylinder and the pneumatic telescopic cylinder pass through the first mounting plate and the second mounting plate respectively and are fixedly connected to the pull wire pneumatic clamp and the L-shaped plate respectively.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. When welding the ear strap line, the first lifting and telescopic cylinder drives the lifting plate to slide upward until the middle pressure plate and the corner pressure plate rise to the preset height. The operator places the mask on the bottom of the middle pressure plate. Under negative pressure, the four corners of the mask are respectively adsorbed on the bottom of the four corner pressure plates. The position of the mask is adjusted so that its two sides are flush with the side walls on the left and right sides of the arc-shaped structure of one of the corner pressure plates. Then the lifting plate is reset, and the middle pressure plate and the corner pressure plate press the mask on the top of the welding table. The positioning of the mask is completed. In the process of positioning the mask, the telescopic cylinder is controlled to drive the wire pulling pneumatic clamp to move to a position close to the wire clamping pneumatic clamp. The wire pulling pneumatic clamp clamps the end of the ear strap line, and the wire clamping pneumatic clamp releases the restriction on the ear strap line. The wire pulling pneumatic clamp resets one end of the ear strap line, and the wire clamping pneumatic clamp again clamps the ear strap line. The second lifting and telescopic cylinder drives the adjustment plate to slide downward until it is pulled out The ear strap line enters the clamping range of the welding pneumatic clamps, and the two welding pneumatic clamps clamp the ear strap line. The telescopic cylinder is driven to drive the cutting knife to move downward and cut the ear strap line. Then the two drive motors respectively drive the two welding pneumatic clamps to rotate until both ends of the ear strap line are located under the ultrasonic welding head assembly. The adjustment plate moves downward until the end of the ear strap line enters the arc structure of the corner pressure plate and is close to the mask. The electric telescopic cylinder drives the ultrasonic welding head assembly to move downward, and the welding head of the ultrasonic welding head assembly enters the arc structure of the corner pressure plate and welds the ear strap line to the mask. The mask can be quickly and accurately positioned through the corner pressure plate and the middle pressure plate. The relative position deviation between the mask and the ear strap line is extremely small, which effectively avoids the common problems of offset and misalignment in traditional welding, improves the accuracy of the welding position of the ear strap line, and greatly improves the consistency and yield rate of the product.

[0027] 2. After welding is completed, the adjustment plate is reset. Under the pressure of the middle pressure plate and the corner pressure plate, the ultrasonic welding head assembly moves upward, and when the welding head separates from the position where the mask is adhered, only a small part of the mask corner is lifted up. Therefore, after completing the welding of the ear strap line, the device can effectively avoid the problem of the mask being lifted by the welding head and causing the nose bridge to bend. During the welding process, the mask remains flat and does not require subsequent leveling treatment, reducing the derivative processes caused by mask deformation. This improvement not only reduces production costs, but also improves production efficiency;

[0028] 3. The device can complete the precise welding of two ear strap lines at one time, reducing the operation of changing masks and greatly improving welding efficiency;

[0029] 4. When welding masks of different sizes, turn the stop bolt to release the fixation, move the first transverse slider, the first longitudinal slider, the second transverse slider, the second longitudinal slider and the third transverse slider to the corresponding scale line position, and turn the stop bolt to fix it. By adjusting the position of the first transverse slider and the first longitudinal slider, the position of the four corner pressure plates can be adjusted, so that masks of different sizes can be positioned. By adjusting the second transverse slider and the second longitudinal slider, the position of the cutting knife and the ultrasonic welding head assembly can be adjusted, so that ear straps of different lengths can be cut and masks of different sizes can be welded. By adjusting the position of the third transverse slider, the position of the ear strap line can be adaptively adjusted. By adjusting the pneumatic telescopic cylinder and controlling the telescopic amount of the telescopic cylinder, the pulling length of the ear strap line can be adjusted. The device can weld ear strap lines for masks of different sizes. The key parameters such as positioning position, welding position, and pulling (cutting) line length can be adjusted through adjustable components to ensure that masks of various sizes can be accurately welded with ear strap lines, greatly improving the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure between the middle pressing plate and the lifting plate of the present invention;

[0033] Figure 3 This is a structural schematic diagram of the top of the middle pressure plate of the present invention;

[0034] Figure 4 Schematic diagram of the structure of the corner pressing plate of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the welding assembly of the present invention;

[0036] Figure 6 This is a schematic structural diagram of the top and bottom of the welding plate of the present invention;

[0037] Figure 7 This is a schematic structural diagram of the top and bottom of the tangent plate of the present invention;

[0038] Figure 8 This is a schematic structural diagram of the bottom of the adjustment plate of the present invention;

[0039] Figure 9It is a structural schematic diagram of the two ends of the first mounting plate of the present invention;

[0040] Figure 10 It is a structural schematic diagram of the two ends of the second mounting plate of the present invention;

[0041] Figure 11 It is a structural schematic diagram of the stop bolt of the present invention;

[0042] Figure 12 It is a structural schematic diagram of the bottom of the lifting plate of the present invention.

[0043] In the figure: 1-welding table; 2-welding assembly; 3-lifting plate; 4-wire assembly; 5-first vertical plate; 6-ventilation pipe; 7-first lifting and telescopic cylinder; 8-first horizontal cylindrical linear slide; 9-first horizontal slider; 10-corner pressure plate; 11-positioning plate; 12-first longitudinal slider; 13-first longitudinal cylindrical linear slide; 14-first support plate; 15-middle pressure plate; 16-scale line; 17-connecting plate; 18-multi-pipeline air exhaust; 19-through hole; 20-connecting groove; 21-stop bolt; 22-second support plate; 23-second longitudinal cylindrical linear slide; 24-second longitudinal slider; 25-tangent plate ;26-welding plate;27-second horizontal cylindrical linear slide;28-second horizontal slider;29-adjusting plate;30-second vertical plate;31-second lifting telescopic cylinder;32-cutting knife;33-driving telescopic cylinder;34-welding pneumatic clamp;35-driving motor;36-electrically controlled telescopic cylinder;37-ultrasonic welding head assembly;38-third horizontal cylindrical linear slide;39-third horizontal slider;40-wire pulling pneumatic clamp;41-first mounting plate;42-control telescopic cylinder;43-threading hole;44-pneumatic telescopic cylinder;45-second mounting plate;46-threading tube;47-L-shaped plate;48-wire clamping pneumatic clamp. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0045] like Figures 1 to 12As shown, a mask ear strap line welding device comprises a welding platform 1, a lifting plate 3 is provided on the top of the welding platform 1 for vertical lifting, a middle pressure plate 15 is detachably provided at the bottom of the lifting plate 3, a first transverse cylindrical linear slide 8 is detachably provided on the top of the middle pressure plate 15, and a first transverse cylindrical linear slide 8 is slidably sleeved with two first transverse sliders 9. The opposite ends of the first transverse slider 9 are provided with a detachably arranged first longitudinal cylindrical linear slide 13, a first longitudinal cylindrical linear slide 12 is slidably sleeved on the first longitudinal cylindrical linear slide 13, and a corner pressure plate 10 is detachably provided on the end of the first longitudinal slider 12. One corner of the corner pressure plate 10 is an arc structure, and the bottom surface of the corner pressure plate 10 is flush with the bottom surface of the middle pressure plate 15. A connecting groove 20 is provided inside the corner pressure plate 10, and a plurality of through holes 19 connected to the connecting groove 20 are provided at the bottom of the corner pressure plate 10. The connecting groove 20 is connected to an external negative pressure gas source. A welding assembly 2 and a wire pulling assembly 4 are provided at positions on both sides of the lifting plate 3 on the top of the welding platform 1.

[0046] The welding assembly 2 includes an adjustment plate 29 that is vertically lifted and lowered. A second transverse cylindrical linear slide 27 is detachably provided at the bottom of the adjustment plate 29. A second transverse slider 28 is slidably sleeved on the second transverse cylindrical linear slide 27. The opposite ends of the second transverse slider 28 are each provided with a detachably provided second longitudinal cylindrical linear slide 23. A second longitudinal slider 24 is slidably sleeved on the second longitudinal cylindrical linear slide 23. A welding plate 26 and a tangent plate 25 are detachably provided at the end of the second longitudinal slider 24. An ultrasonic welding head assembly 37 that is vertically lifted and lowered and a welding pneumatic clamp 34 that is rotated along a plumb line are provided at the bottom of the welding plate 26. A cutting knife 32 is vertically lifted and lowered at the bottom of the tangent plate 25.

[0047] The wire pulling assembly 4 includes two third transverse cylindrical linear slides 38 detachably connected to the welding table 1. The two third transverse cylindrical linear slides 38 are respectively located on both sides of the adjustment plate 29. The third transverse cylindrical linear slide 38 is provided with a sliding sleeve with a third transverse slider 39. The tops of the two third transverse sliders 39 are respectively provided with a detachable first mounting plate 41 and a second mounting plate 45. The end of the first mounting plate 41 is provided with a wire pulling pneumatic clamp 40 for horizontal movement, and the end of the second mounting plate 45 is provided with an L-shaped plate 47 for horizontal movement. The top of the L-shaped plate 47 is provided with a detachable wire clamping pneumatic clamp 48 and a fixed wire threading tube 46. The end of the second mounting plate 45 is penetrated by a wire threading hole 43.

[0048] The first transverse cylindrical linear slide 8, the first longitudinal cylindrical linear slide 13, the second transverse cylindrical linear slide 27, the second longitudinal cylindrical linear slide 23 and the third transverse cylindrical linear slide 38 are all engraved with scale lines 16, each scale line 16 corresponds to a mask of a different size, and the first transverse slider 9, the first longitudinal slider 12, the second transverse slider 28, the second longitudinal slider 24 and the third transverse slider 39 are all provided with stop bolts 21 threadedly connected thereto.

[0049] A first vertical plate 5 and two second vertical plates 30 are fixedly provided on the top of the welding table 1. The lifting plate 3 and the adjusting plate 29 are vertically slidably connected to the first vertical plate 5 and the second vertical plate 30 respectively. A first lifting and telescopic cylinder 7 and two second lifting and telescopic cylinders 31 are fixedly provided on the top of the welding table 1. The telescopic ends of the first lifting and telescopic cylinder 7 and the second lifting and telescopic cylinder 31 are fixedly connected to the lifting plate 3 and the adjusting plate 29 respectively.

[0050] The first longitudinal cylindrical linear guide rail 13 and the second longitudinal cylindrical linear guide rail 23 are detachably connected to the first transverse slider 9 and the second transverse slider 28 via the first support plate 14 and the second support plate 22 , respectively.

[0051] The middle pressing plate 15 is detachably connected to the lifting plate 3 via two connecting plates 17 , and the corner pressing plate 10 is detachably connected to the first longitudinal sliding block 12 via the positioning plate 11 .

[0052] A multi-pipeline air exhaust 18 is fixedly provided at the bottom of the lifting plate 3. One port of the multi-pipeline air exhaust 18 is connected to an external negative pressure air source, and the remaining ports of the multi-pipeline air exhaust 18 are connected to the connecting groove 20 in the corner pressure plate 10 through the vent pipe 6.

[0053] A driving motor 35 and an electric telescopic cylinder 36 are fixedly provided on the top of the welding plate 26. The output end of the driving motor 35 and the telescopic end of the electric telescopic cylinder 36 both pass through the welding plate 26 and are detachably connected to the welding pneumatic clamp 34 and the ultrasonic welding head assembly 37. A driving telescopic cylinder 33 is fixedly provided on the top of the tangent plate 25. The telescopic end of the driving telescopic cylinder 33 passes through the tangent plate 25 and is detachably connected to the cutting knife 32.

[0054] The ultrasonic welding head assembly 37 mainly includes a transducer, a horn and a welding head. The transducer is electrically connected to an external ultrasonic generator.

[0055] A control telescopic cylinder 42 and a pneumatic telescopic cylinder 44 are fixed to the ends of the first mounting plate 41 and the second mounting plate 45 respectively. The telescopic ends of the control telescopic cylinder 42 and the pneumatic telescopic cylinder 44 pass through the first mounting plate 41 and the second mounting plate 45 respectively and are fixedly connected to the pull wire pneumatic clamp 40 and the L-shaped plate 47 respectively.

[0056] The working principle of this device is:

[0057] When welding the ear strap line, the first lifting and telescopic cylinder 7 drives the lifting plate 3 to slide upward until the middle pressure plate 15 and the corner pressure plate 10 rise to the preset height. The operator places the mask on the bottom of the middle pressure plate 15. Under negative pressure, the four corners of the mask are respectively adsorbed on the bottom of the four corner pressure plates 10. The position of the mask is adjusted so that its two sides are flush with the side walls on the left and right sides of the arc structure of one of the corner pressure plates 10. After that, the lifting plate 3 is reset, and the middle pressure plate 15 and the corner pressure plates 10 press the mask to the welding At the top of the platform 1, the positioning of the mask is completed. During the positioning of the mask, the telescopic cylinder 42 is controlled to drive the wire-pulling pneumatic clamp 40 to move to a position close to the wire-clamping pneumatic clamp 48. The wire-pulling pneumatic clamp 40 clamps the end of the ear strap line, and the wire-clamping pneumatic clamp 48 releases the restriction on the ear strap line. The wire-pulling pneumatic clamp 40 clamps one end of the ear strap line and resets it. The wire-clamping pneumatic clamp 48 clamps the ear strap line again, and the second lifting telescopic cylinder 31 drives the adjusting plate 29 to slide downward until it is The pulled ear band line enters the clamping range of the welding pneumatic clamp 34, and the two welding pneumatic clamps 34 clamp the ear band line, driving the telescopic cylinder 33 to drive the cutting knife 32 to move downward and cut the ear band line, and then the two driving motors 35 respectively drive the two welding pneumatic clamps 34 to rotate until both ends of the ear band line are located under the ultrasonic welding head assembly 37, and the adjusting plate 29 moves downward until the end of the ear band line enters the arc structure of the corner pressure plate 10 and is close to the mask. The electric telescopic cylinder 36 drives the ultrasonic welding head assembly 37 to move downward, and the welding head of the ultrasonic welding head assembly 37 enters the arc structure of the corner pressure plate 10 and welds the ear band line to the mask. The mask can be quickly and accurately positioned by the corner pressure plate 10 and the middle pressure plate 15. The relative position deviation of the mask and the ear band line is extremely small, which effectively avoids the problems of offset and misalignment common in traditional welding, improves the accuracy of the welding position of the ear band line, and greatly improves the consistency and yield rate of the product.

[0058] After welding is completed, the adjustment plate 29 is reset. Under the pressure of the middle pressure plate 15 and the corner pressure plate 10, the ultrasonic welding head assembly 37 moves upward, and when the welding head separates from the position where the mask is adhered, only a small part of the mask corner is lifted up. Therefore, after completing the welding of the ear strap line, the device can effectively avoid the problem of the mask being lifted by the welding head and causing the nose bridge to bend. During the welding process, the mask remains flat and does not require subsequent leveling treatment, reducing the derivative processes caused by mask deformation. This improvement not only reduces production costs, but also improves production efficiency.

[0059] The device can complete the precise welding of two ear straps at one time, reducing the need to change masks and significantly improving welding efficiency.

[0060] When welding masks of different sizes, rotate the stop bolt 21 to release the fixation, move the first transverse slider 9, the first longitudinal slider 12, the second transverse slider 28, the second longitudinal slider 24 and the third transverse slider 39 to the corresponding scale line 16 position, rotate the stop bolt 21 to fix, and by adjusting the position of the first transverse slider 9 and the first longitudinal slider 12, the position of the four corner pressure plates 10 can be adjusted, thereby positioning masks of different sizes, and by adjusting the second transverse slider 28 and the second longitudinal slider 24, the cutting knife 32 and the ultrasonic welding The position of the head assembly 37 can be adjusted, so that ear straps of different lengths can be intercepted and masks of different sizes can be welded. The position of the ear strap can be adaptively adjusted by adjusting the position of the third horizontal slider 39. The pulling length of the ear strap can be adjusted by adjusting the pneumatic telescopic cylinder 44 and the telescopic amount of the control telescopic cylinder 42. The device can weld ear straps for masks of different sizes. The key parameters such as the positioning position, welding position, and pulling (cutting) line length can be adjusted through the adjustable components to ensure that masks of various sizes can be accurately welded to the ear strap lines, thereby greatly improving the versatility of the equipment.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A mask ear strap welding device, characterized by: The welding table (1) comprises a welding table (1), wherein a lifting plate (3) is provided on the top of the welding table (1) for vertical lifting, a middle pressure plate (15) is detachably provided on the bottom of the lifting plate (3), a first transverse cylindrical linear slide (8) is detachably provided on the top of the middle pressure plate (15), two first transverse sliders (9) are provided on the sliding sleeve of the first transverse cylindrical linear slide (8), opposite ends of the first transverse sliders (9) are provided with a detachably provided first longitudinal cylindrical linear slide (13), and a first longitudinal slider (12) is provided on the sliding sleeve of the first longitudinal cylindrical linear slide (13). The end of the first longitudinal slider (12) is detachably provided with a corner pressure plate (10), one of the corners of the corner pressure plate (10) is an arc-shaped structure, the bottom surface of the corner pressure plate (10) is flush with the bottom surface of the middle pressure plate (15), a connecting groove (20) is provided inside the corner pressure plate (10), and a plurality of through holes (19) connected to the connecting groove (20) are provided at the bottom of the corner pressure plate (10), and the connecting groove (20) is connected to an external negative pressure gas source, and the top of the welding table (1) is provided with welding components (2) and wire drawing components (4) at positions on both sides of the lifting plate (3); The welding assembly (2) includes an adjustment plate (29) arranged to be lifted vertically, a second transverse cylindrical linear slide (27) being detachably provided at the bottom of the adjustment plate (29), a second transverse slider (28) being slidably sleeved on the second transverse cylindrical linear slide (27), opposite ends of the second transverse slider (28) being detachably provided with a second longitudinal cylindrical linear slide (23), a second longitudinal slider (24) being slidably sleeved on the second longitudinal cylindrical linear slide (23), a welding plate (26) and a tangent plate (25) being detachably provided at the end thereof, an ultrasonic welding head assembly (37) being vertically lifted and a welding pneumatic clamp (34) being rotatable along a plumb line being provided at the bottom of the welding plate (26), and a cutting knife (32) being vertically lifted and provided at the bottom of the tangent plate (25); The wire pulling assembly (4) includes two third transverse cylindrical linear slides (38) detachably connected to the welding table (1), the two third transverse cylindrical linear slides (38) are respectively located on both sides of the adjustment plate (29), the third transverse cylindrical linear slides (38) are provided with a third transverse slider (39) on the sliding sleeve, the tops of the two third transverse sliders (39) are respectively provided with a detachably arranged first mounting plate (41) and a second mounting plate (45), the end of the first mounting plate (41) is provided with a wire pulling pneumatic clamp (40) for horizontal movement, the end of the second mounting plate (45) is provided with an L-shaped plate (47) for horizontal movement, the top of the L-shaped plate (47) is provided with a detachably arranged wire clamping pneumatic clamp (48) and a fixedly arranged wire threading tube (46), and the end of the second mounting plate (45) is provided with a wire threading hole (43) through it.

2. A mask ear strap welding device according to claim 1, characterized in that: The first transverse cylindrical linear slide (8), the first longitudinal cylindrical linear slide (13), the second transverse cylindrical linear slide (27), the second longitudinal cylindrical linear slide (23) and the third transverse cylindrical linear slide (38) are all engraved with scale lines (16), and the first transverse slider (9), the first longitudinal slider (12), the second transverse slider (28), the second longitudinal slider (24) and the third transverse slider (39) are all provided with stop bolts (21) threadedly connected thereto.

3. A mask ear strap welding device according to claim 1, characterized in that: A first vertical plate (5) and two second vertical plates (30) are fixedly provided on the top of the welding table (1); the lifting plate (3) and the adjusting plate (29) are correspondingly connected to the first vertical plate (5) and the second vertical plate (30) in a vertical sliding manner; a first lifting and telescopic cylinder (7) and two second lifting and telescopic cylinders (31) are fixedly provided on the top of the welding table (1); the telescopic ends of the first lifting and telescopic cylinder (7) and the second lifting and telescopic cylinder (31) are correspondingly fixedly connected to the lifting plate (3) and the adjusting plate (29).

4. A mask ear strap welding device according to claim 1, characterized in that: The first longitudinal cylindrical linear slide rail (13) and the second longitudinal cylindrical linear slide rail (23) are detachably connected to the first transverse slide block (9) and the second transverse slide block (28) via the first support plate (14) and the second support plate (22), respectively.

5. A mask ear strap welding device according to claim 1, characterized in that: The middle pressing plate (15) is detachably connected to the lifting plate (3) via two connecting plates (17), and the corner pressing plate (10) is detachably connected to the first longitudinal slider (12) via a positioning plate (11).

6. A mask ear strap welding device according to claim 1, characterized in that: A multi-channel air exhaust (18) is fixedly provided at the bottom of the lifting plate (3), one of the ports of the multi-channel air exhaust (18) is connected to an external negative pressure air source, and the remaining ports of the multi-channel air exhaust (18) are connected to the connecting groove (20) in the corner pressure plate (10) through the ventilation pipe (6).

7. A mask ear strap welding device according to claim 1, characterized in that: A driving motor (35) and an electric telescopic cylinder (36) are fixedly provided on the top of the welding plate (26). The output end of the driving motor (35) and the telescopic end of the electric telescopic cylinder (36) both pass through the welding plate (26) and are detachably connected to the welding pneumatic clamp (34) and the ultrasonic welding head assembly (37). A driving telescopic cylinder (33) is fixedly provided on the top of the cutting plate (25). The telescopic end of the driving telescopic cylinder (33) passes through the cutting plate (25) and is detachably connected to the cutting knife (32).

8. A mask ear strap welding device according to claim 1, characterized in that: A control telescopic cylinder (42) and a pneumatic telescopic cylinder (44) are fixedly provided at the ends of the first mounting plate (41) and the second mounting plate (45), respectively. The telescopic ends of the control telescopic cylinder (42) and the pneumatic telescopic cylinder (44) pass through the first mounting plate (41) and the second mounting plate (45), respectively, and are fixedly connected to the wire-pulling pneumatic clamp (40) and the L-shaped plate (47).

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