CN213166961U

CN213166961U - Mask ear belt welding machine

Info

Publication number: CN213166961U
Application number: CN202021543095.9U
Authority: CN
Inventors: 熊海洋
Original assignee: Huizhou Yongli Technology Co ltd
Current assignee: Huizhou Yongli Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-05-11
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a mask ear belt welding machine, which comprises a machine table, a conveying and positioning device and an ultrasonic welding device, wherein the conveying and positioning device is used for conveying a mask body, and the ultrasonic welding device is used for welding an ear belt on the mask body on the conveying and positioning device; the arrangement of the exhaust fan enables the heat accumulated on the welding assembly to be timely dissipated to the external environment, so that the welding assembly is prevented from being burnt due to excessive heat accumulation; due to the arrangement of the positioning mechanism, mask bodies of various specifications can be accurately positioned before ear band welding operation is carried out, so that the mask bodies can be positioned after entering an ear band welding station, the ear bands can be accurately welded to preset positions on the mask bodies, and the ear band welding precision of equipment is improved; simultaneously, positioning mechanism's setting still makes the border position homoenergetic of gauze mask body obtain spacing effectively to prevent that the cover body from appearing rocking in the in-process of conveying, improved the conveying stability of gauze mask body.

Description

Mask ear belt welding machine

Technical Field

The utility model relates to a welding equipment field especially relates to a gauze mask ear strap welding machine.

Background

Mask production facility can be divided into plane gauze mask production facility, N95 gauze mask production facility, folding shape gauze mask production facility, duckbilled type gauze mask production facility according to the difference of gauze mask kind, and different gauze mask finished product is with different gauze mask production facility, and then can divide into gauze mask body production facility and gauze mask ear strap welding machine etc. according to the difference of equipment technology step, to gauze mask ear strap welding machine, its mainly used welds the ear strap to the gauze mask body on.

Admittedly, the mask ear strap welding machine has greatly accelerated the efficiency that the manufacturer produced the processing gauze mask, but, current gauze mask ear strap welding machine still has following technical problem at the practical application in-process:

firstly, various types of masks can be divided into masks with the specification of children and masks with the specification of adults, so that when a mask ear band welding machine is used for welding an ear band to mask bodies with different specifications, the ear band can only be welded to a welding mechanism on the mask body along a preset track, the situation that the ear band cannot be accurately welded to a preset position of the mask body often occurs, and the welding precision of the ear band is low;

secondly, in the process of conveying the mask body, the existing mask ear belt welding machine is easy to shake in the conveying process due to the fact that the whole mass of the mask body is light, and the conveying stability of the mask body is poor;

in addition, current gauze mask ear area welding machine is usually to using ultrasonic bonding mechanism to weld the ear area on the gauze mask body, specifically speaking, the part that needs to weld the ear area on the gauze mask body can move to on ultrasonic bonding mechanism's the processing station, subsequently, ultrasonic bonding mechanism can carry out the centre gripping to ear area and gauze mask body centre gripping jointly, along with the high frequency vibrations of a period of time after, the contact site of ear area and gauze mask body welds to an organic whole promptly, however, along with the continuous accumulation of length of service time, the heat in the ultrasonic bonding mechanism will constantly be saved, after the heat is accumulated to a certain degree, ultrasonic bonding mechanism just directly destroys because of long-pending heat very easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a gauze mask ear area welding machine, this gauze mask ear area welding machine not only can prevent that ultrasonic mechanism from directly burning out because of long-pending too much, still has the high advantage of ear area welding precision and transmission stability.

The purpose of the utility model is realized through the following technical scheme:

a mask ear strap welder comprising:

a machine platform;

the mask body conveying device comprises a machine table, a conveying positioning device and a plurality of positioning mechanisms, wherein the conveying belt is rotatably arranged on the machine table, each positioning mechanism is respectively arranged on the conveying belt, an accommodating gap for accommodating a mask body is arranged between every two adjacent positioning mechanisms, in one positioning mechanism, the positioning mechanism comprises a V-shaped seat, a clamping plate, a spring, an adjusting table, an adjusting sheet, a clamping piece, a limiting piece and a clamping piece, the V-shaped seat is arranged on the conveying belt, a plurality of clamping grooves are formed in the V-shaped seat, the clamping plate is rotatably arranged on the V-shaped seat, one end of the spring is connected with the V-shaped seat, the other end of the spring is connected with the clamping plate, the adjusting table is arranged on the V-shaped seat, the end part of the adjusting sheet is connected with the clamping plate, and the adjusting sheet penetrates through the adjusting table, the adjusting sheet is provided with a plurality of adjusting holes, the clamping piece is used for sequentially penetrating the adjusting table and the adjusting holes, the limiting piece is arranged on the V-shaped seat in a sliding manner, the limiting piece is provided with a through hole, and the clamping piece is used for penetrating the through hole, so that the clamping piece is inserted into one clamping groove; and

ultrasonic welding device, ultrasonic welding device includes welding assembly and exhaust fan, welding assembly set up in on the board, welding assembly is used for carrying out ear area welding operation to the gauze mask body on the conveyer belt, the exhaust fan with welding assembly connects.

In one embodiment, the conveying and positioning device includes two adjusting tables, two adjusting sheets, and two fastening members, each adjusting table is located on the V-shaped seat, an end of each adjusting sheet is connected to the clamping plate, each adjusting sheet is provided with a plurality of adjusting holes, an end of each adjusting sheet is connected to the clamping plate, each adjusting sheet is correspondingly inserted into each adjusting table, each fastening member is correspondingly inserted into each adjusting table, one fastening member is used for inserting the adjusting hole of one adjusting sheet, and the other fastening member is used for inserting the adjusting hole of the other adjusting sheet.

In one embodiment, the conveying and positioning device further comprises a connecting rod, one end of the connecting rod is connected with one of the clamping pieces, and the other end of the connecting rod is connected with the other clamping piece.

In one embodiment, the hole wall of the through hole is provided with a spacing groove, part of the side wall of the fastener protrudes outwards to form an anti-loosening strip, and the spacing groove is used for accommodating the anti-loosening strip.

In one embodiment, the conveying and positioning device further includes a guide rod, the guide rod is slidably disposed on the V-shaped seat, and the guide rod is connected to the limiting member.

In one embodiment, the welding assembly comprises a welding seat, a press riveting cylinder and a press riveting head, the welding seat and the press riveting cylinder are respectively arranged on the machine table, and the press riveting cylinder is used for driving the press riveting head to move towards a direction close to or far away from the welding seat relative to the machine table, so that the mask body and the ear belt are clamped between the welding seat and the press riveting head.

In one embodiment, the mask ear belt welding machine further comprises an ear belt unreeling and cutting device, the ear belt unreeling and cutting device comprises an unreeling wheel, a clamping seat, a clamping block, a pull belt cylinder, a pull belt sliding block, a clamping jaw cylinder, a pull belt clamping jaw and a cutting knife, the unreeling wheel, the clamping seat and the clamping block are respectively arranged on the machine table, the unreeling wheel is used for unreeling the ear belt to a position between the clamping seat and the clamping block, the clamping block is used for moving towards a direction close to or far away from the clamping seat relative to the machine table, so that the ear belt is clamped between the clamping seat and the clamping block, the pull belt cylinder is used for driving the pull belt sliding block to move towards the direction close to or far away from the clamping seat relative to the machine table, the clamping jaw cylinder is arranged on the pull belt sliding block, the pull belt clamping jaw is connected with an output shaft of the clamping jaw cylinder, and the pull belt clamping jaw, the cutting knife is arranged on the machine table and used for cutting the earring.

In one embodiment, the mask ear strap welding machine further comprises an ear strap clamping and reversing device, the ear strap clamping and reversing device comprises a rotary seat, a clamping welding cylinder and a clamping welding clamping jaw, the rotary seat is rotatably arranged on the machine table, the clamping welding cylinder is arranged on the rotary seat, the clamping welding clamping jaw is connected with an output shaft of the clamping welding cylinder, and the clamping welding clamping jaw is used for clamping an ear strap.

In one embodiment, the ear belt clamping and reversing device further comprises a rotary cylinder, the rotary cylinder is arranged on the machine table, and the rotary seat is connected with a rotating shaft of the rotary cylinder.

In one embodiment, a soft rubber pad is arranged on the side surface of the limiting part far away from the V-shaped seat, and the soft rubber pad is used for supporting the edge of the mask body.

Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a mask ear band welding machine according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

fig. 3 is a schematic structural view of an ultrasonic welding apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an ear band unreeling cutting device and an ear band clamping and reversing device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an ear band clamping and reversing device according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the mask ear band welding machine 10 includes a machine 100, a conveying and positioning device 200 and an ultrasonic welding device 300, wherein the conveying and positioning device 200 and the ultrasonic welding device 300 are respectively disposed on the machine 100.

It should be noted that the mask ear belt welding machine 10 is used for manufacturing and processing masks; the machine 100 is used for fixing the transmission positioning device 200 and the ultrasonic welding device 300; the conveying and positioning device 200 is used for conveying the mask body; the ultrasonic welding device 300 is used for welding the ear band to the mask body on the conveying and positioning device 200.

Referring to fig. 1 and 2 together, the conveying and positioning device 200 includes a conveyor belt 210 and a plurality of positioning mechanisms 220, the conveyor belt 210 is rotatably disposed on the machine 100, each positioning mechanism 220 is disposed on the conveyor belt 210, an accommodating gap 230 for accommodating the mask body 20 is disposed between two adjacent positioning mechanisms 220, in one positioning mechanism 220, the positioning mechanism 220 includes a V-shaped seat 221, a clamping plate 222, a spring 223, an adjusting platform 224, an adjusting plate 225, a clamping member 226, a limiting member 227 and a clamping member 228, the V-shaped seat 221 is disposed on the conveyor belt 210, the V-shaped seat 221 is provided with a plurality of clamping grooves 2211, the clamping plate 222 is rotatably disposed on the V-shaped seat 221, one end of the spring 223 is connected with the V-shaped seat 221, the other end of the spring 223 is connected with the clamping plate 222, the adjusting platform 224 is disposed on the V-shaped seat 221, an end of the adjusting plate 225 is connected with the clamping plate 222, and, the adjusting tab 225 has a plurality of adjusting holes 2251, the fastening member 226 is configured to sequentially penetrate through the adjusting platform 224 and the adjusting holes 2251, the limiting member 227 is slidably disposed on the V-shaped seat 221, the limiting member 227 has a through hole 2271, and the fastening member 228 is configured to penetrate through the through hole 2271, so that the fastening member 228 is inserted into one of the fastening grooves 2211.

The conveyor belt 210 is used for conveying the mask body; the positioning mechanism 220 is used for positioning the mask body; the receiving space 230 is used for receiving the mask body; the V-shaped seat 221 is used for supporting the clamping plate 222 to rotate; the clamping plate 222 is used for supporting the edge of the nose bridge mouth of the mask body; the spring 223 is used for applying elastic force to the clamping plate 222, so that the effect of eliminating the fit clearance between the clamping plate 222 and the V-shaped seat 221 is achieved, and the clamping plate 222 can be prevented from shaking on the V-shaped seat 221; the adjusting platform 224, the adjusting sheet 225 and the clamping member 226 are used together to adjust the relative positions of the clamping plate 222 and the V-shaped seat 221; the limiting member 227 is used for supporting the edge of the mask body; the fastener 228 is used for adjusting the relative position of the limiting member 227 and the V-shaped seat 221; the snap-in groove 2211 and the via 2271 are used together to receive and fix the snap-in 228; the adjustment hole 2251 is used to receive the trim piece 226.

In the practical application process, when the masks with different specifications need to be positioned, the clamping plate 222 is rotated, so that the clamping plate 222 drives the adjusting sheet 225 to slide in the adjusting table 224, when the mask is rotated to a preset position, the clamping piece 226 is inserted into the adjusting table 224, so that the clamping piece 226 passes through the adjusting hole 2251 in the adjusting sheet 225, and the adjustment of the relative position between the clamping plate 222 and the V-shaped seat 221 is completed, so that the edges of the nose bridge openings on the mask bodies 20 with different specifications can be attached to the clamping plate 222;

in addition to the above steps, in order to position the mask body more accurately, the position-limiting member 227 is slid on the V-shaped seat 221, so as to adjust the relative position between the position-limiting member 227 and the V-shaped seat 221, when the position-limiting member 227 slides to a predetermined position, the locking member 228 is inserted into the locking groove 2211 through the through hole 2271, so as to complete the adjustment of the relative position of the V-shaped seat 221 of the position-limiting member 227, and thus, the edges of mask bodies of different specifications can be attached to the position-limiting member 227;

after the steps are carried out, mask bodies of different specifications can be reliably and accurately positioned after being placed in the accommodating gap 230, so that the positions of the mask bodies fed into the ear band welding stations are the same as far as possible, the ear bands can be accurately welded to the mask bodies, and the ear band welding precision of equipment is improved; simultaneously, the gauze mask body is at the transfer process, and each edge homoenergetic on the gauze mask body can obtain reliable spacing, has improved the stability of equipment conveying gauze mask body.

Referring to fig. 3, the ultrasonic welding apparatus 300 includes a welding assembly 310 and a fan 320, the welding assembly 310 is disposed on the machine 100, the welding assembly 310 is used for performing an ear band welding operation on the mask body on the conveyor belt 210, and the fan 320 is connected to the welding assembly 310.

It should be noted that the welding assembly 310 is used for welding the ear strap to the mask body; the exhaust fan 320 is used for dissipating heat of the welding assembly 310, and quickens the air flow rate near the welding assembly 310, so that the heat on the welding assembly 310 can be dissipated to the outside rapidly, and the welding assembly 310 is prevented from being burnt due to excessive heat accumulation.

Referring to fig. 2, in one embodiment, the transmission positioning device 200 includes two adjusting platforms 224, two adjusting sheets 225 and two fastening members 226, each adjusting platform 224 is located on the V-shaped seat 221, an end of each adjusting sheet 225 is connected to the clamping plate 222, each adjusting sheet 225 is provided with a plurality of adjusting holes 2251, an end of each adjusting sheet 225 is connected to the clamping plate 222, each adjusting sheet 225 is correspondingly inserted through each adjusting platform 224, each fastening member 226 is correspondingly inserted through each adjusting platform 224, one fastening member 226 is used for inserting through an adjusting hole 2251 on one adjusting sheet 225, and the other fastening member 226 is used for inserting through an adjusting hole 2251 on the other adjusting sheet 225.

It should be noted that, by providing two adjusting tables 224, two adjusting sheets 225 and two clamping members 226, the relative position between the clamping plate 222 and the V-shaped seat 221 can be continuously adjusted when a single component is damaged, so as to improve the operation endurance of the device.

Further, referring to fig. 2, in one embodiment, the transmission positioning device 200 further includes a connecting rod 240, one end of the connecting rod 240 is connected to one of the clamping members 226, and the other end of the connecting rod 240 is connected to the other clamping member 226.

It should be noted that, the two fastening members 226 are connected by the connecting rod 240, so that a processing worker can insert the two fastening members 226 into corresponding positions respectively at the same time, and the convenience of adjusting the relative positions of the clamping plate 222 and the V-shaped seat 221 is improved.

Referring to fig. 2, in one embodiment, the hole wall of the through hole 2271 is provided with an avoiding groove 2272, a part of the sidewall of the fastening member 228 protrudes outward to form a locking bar 2281, and the avoiding groove 2272 is used for accommodating the locking bar 2281.

It should be noted that, after the fastening element 228 is correspondingly inserted into the through hole 2271, the anti-loose strip 2281 is also inserted into the avoiding groove 2272, so that the groove wall of the avoiding groove 2272 and the anti-loose strip 2281 are contacted with each other, and thus, the friction between the fastening element 228 and the limiting element 227 can be increased, and the fastening element 228 is prevented from being disengaged from the limiting element 227.

Referring to fig. 2, in one embodiment, the conveying and positioning device 200 further includes a guide rod 250, the guide rod 250 is slidably disposed on the V-shaped seat 221, and the guide rod 250 is connected to the limiting member 227.

It should be noted that the guide rod 250 plays a role of guiding the stopper 227 to slide; in the process of adjusting the relative position of the limiting part 227 and the V-shaped seat 221, the guide rod 250 is arranged to prevent the limiting part 227 from being in a bad position in the adjusting process, so that the limiting part 227 can be attached to more edges of the mask body as much as possible, and further the mask body is positioned more accurately, and the ear band welding precision of the equipment and the conveying stability of the mask body are improved.

Referring to fig. 3, in one embodiment, the welding assembly 310 includes a welding base 311, a rivet pressing cylinder 312 and a rivet pressing head 313, the welding base 311 and the rivet pressing cylinder 312 are respectively disposed on the machine 100, and the rivet pressing cylinder 312 is used for driving the rivet pressing head 313 to move toward or away from the welding base 311 relative to the machine 100, so that the mask body and the ear strap are clamped between the welding base 311 and the rivet pressing head 313.

The welding seat 311 and the rivet pressing head 313 are used together for welding the ear strap to the mask body; the rivet cylinder 312 is used to provide power to the rivet head 313, so that the ear strap and the mask body are clamped between the welding seat 311 and the rivet head 313.

Referring to fig. 1 and 4 together, in one embodiment, the mask ear strap welding machine 10 further includes an ear strap unwinding cutting device 400, the ear strap unwinding cutting device 400 includes an unwinding wheel 410, a holder 420, a clamp block 430, a strap cylinder 440, a strap slider 450, a jaw cylinder 460, a strap jaw 470 and a cutting knife 480, the unwinding wheel 410, the holder 420 and the clamp block 430 are respectively disposed on the machine 100, the unwinding wheel 410 is configured to unwind the ear strap between the holder 420 and the clamp block 430, the clamp block 430 is configured to move toward or away from the holder 420 relative to the machine 100, so that the ear strap is clamped between the holder 420 and the clamp block 430, the strap cylinder 440 is configured to drive the strap slider 450 to move toward or away from the holder 420 relative to the machine 100, the jaw cylinder 460 is disposed on the strap slider 450, the strap jaw 470 is connected to an output shaft of the jaw cylinder 460, the jaw 470 is configured to clamp the ear strap, the cutting knife 480 is disposed on the machine table 100, and the cutting knife 480 is used for cutting the ear belt.

It should be noted that the ear band unreeling and cutting device 400 is used for unreeling and cutting an ear band; the unwinding wheel 410 is used for unwinding the raw material of the ear belt, for example, the motor drives the unwinding wheel 410 to rotate, so that the raw material of the ear belt sleeved on the unwinding wheel 410 is continuously unwound; the clamping seat 420 and the clamping block 430 are used together for clamping the ear belt unreeled from the unreeling wheel 410, so that the cutting knife 480 can smoothly cut the ear belt; the pull belt cylinder 440 is used for driving the pull belt slider 450 to slide along a preset track; the pull belt slide block 450 is used for driving the clamping jaw air cylinder 460 to move together relative to the machine table 100; the clamping jaw air cylinder 460 is used for driving the pull belt clamping jaw 470 to clamp the ear belt; the pull strip jaw 470 is used to clamp the ear strap that passes out from between the clamp holder 420 and the clamp block 430; the cutting blade 480 is used to cut the ear band.

It should be added that, in the actual working process, after the pull tape clamping jaw 470 clamps the ear tape penetrating from between the clamping seat 420 and the clamping block 430, the pull tape sliding block 450 drives the pull tape clamping jaw 470 to move to the preset position in the same direction, the clamping block 430 moves towards the direction close to the clamping seat 420 so as to clamp the ear tape, and the cutting knife 480 cuts the ear tape to complete the cutting of the ear tape.

Referring to fig. 5, in one embodiment, the mask ear strap welding machine 10 further includes an ear strap clamping and reversing device 500, the ear strap clamping and reversing device 500 includes a rotary base 510, a clamping and welding cylinder 520 and a clamping and welding clamping jaw 530, the rotary base 510 is rotatably disposed on the machine 100, the clamping and welding cylinder 520 is disposed on the rotary base 510, the clamping and welding clamping jaw 530 is connected to an output shaft of the clamping and welding cylinder 520, and the clamping and welding clamping jaw 530 is used for clamping an ear strap.

It should be noted that the ear band clamping and reversing device 500 is used for clamping the ear band and transferring the part of the ear band to be welded to the mask body; the rotary base 510 is used for driving the clamping and welding cylinder 520 and the clamping and welding clamping jaw 530 to rotate together relative to the machine 100; the clamp welding cylinder 520 is used for driving the clamp welding clamping jaws 530 to clamp the ear belt.

Further, referring to fig. 5, in one embodiment, the ear band clamping and reversing device 500 further includes a rotating cylinder 540, the rotating cylinder 540 is disposed on the machine 100, and the rotating base 510 is connected to a rotating shaft of the rotating cylinder 540.

It should be noted that the revolving cylinder 540 is used for providing power to the revolving bed 510, so as to achieve the purpose of rotating the revolving bed 510 relative to the machine 100; in the actual work process, before cutting the ear area, revolving bed 510 can drive to press from both sides and weld clamping jaw 530 and rotate to preset position to make clamp welding clamping jaw 530 can carry out the centre gripping to the ear area, afterwards, treat to accomplish the ear area and cut the back, revolving bed 510 can drive the clamp welding clamping jaw 530 that the centre gripping has the ear area and rotate once more, so that the both ends of the ear area after cutting move to the gauze mask body on, thereby make the ear area can weld to the gauze mask body on.

Referring to fig. 2, in one embodiment, the limiting member 227 is provided with a soft rubber pad 260 on a side surface away from the V-shaped seat 221, and the soft rubber pad 260 is used for supporting an edge of the mask body.

It should be noted that the soft rubber pad 260 increases the friction between the mask body and the conveying and positioning device 200, thereby further improving the conveying stability of the mask body.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A mask ear strap welder, comprising:

a machine platform;

2. The mask ear band welding machine according to claim 1, characterized in that the conveying and positioning device comprises two adjusting tables, two adjusting sheets and two clamping pieces, each adjusting table is located on the V-shaped seat, each adjusting sheet is provided with a plurality of adjusting holes, the end of each adjusting sheet is connected with the clamping plate, each adjusting sheet is correspondingly arranged on each adjusting table in a penetrating manner, each clamping piece is correspondingly arranged on each adjusting table in a penetrating manner, one clamping piece is used for penetrating through the adjusting hole on one adjusting sheet, and the other clamping piece is used for penetrating through the adjusting hole on the other adjusting sheet.

3. The mask ear strap welding machine of claim 2, wherein the conveying and positioning device further comprises a connecting rod, one end of the connecting rod is connected with one of the clamping pieces, and the other end of the connecting rod is connected with the other clamping piece.

4. The mask ear band welding machine of claim 1, wherein a clearance groove is formed in the hole wall of the through hole, a part of the side wall of the buckling piece protrudes outwards to form an anti-loosening strip, and the clearance groove is used for accommodating the anti-loosening strip.

5. The mask ear strap welding machine of claim 1, wherein the conveying and positioning device further comprises a guide rod, the guide rod is slidably disposed on the V-shaped seat, and the guide rod is connected with the limiting member.

6. The mask ear strap welding machine of claim 1, wherein the welding assembly comprises a welding seat, a press riveting cylinder and a press riveting head, the welding seat and the press riveting cylinder are respectively arranged on the machine table, and the press riveting cylinder is used for driving the press riveting head to move towards a direction close to or far away from the welding seat relative to the machine table, so that the mask body and the ear strap are clamped between the welding seat and the press riveting head.

7. The mask ear strap welding machine according to claim 1, characterized in that the mask ear strap welding machine further comprises an ear strap unwinding cutting device, the ear strap unwinding cutting device comprises an unwinding wheel, a clamping seat, a clamping block, a pull strap cylinder, a pull strap slider, a clamping jaw cylinder, a pull strap clamping jaw and a cutting knife, the unwinding wheel, the clamping seat and the clamping block are respectively arranged on the machine table, the unwinding wheel is used for unwinding the ear strap between the clamping seat and the clamping block, the clamping block is used for moving towards the direction close to or away from the clamping seat relative to the machine table, so that the ear strap is clamped between the clamping seat and the clamping block, the pull strap cylinder is used for driving the pull strap slider to move towards the direction close to or away from the clamping seat relative to the machine table, the clamping jaw cylinder is arranged on the pull strap slider, and the clamping jaw is connected with an output shaft of the clamping jaw cylinder, the stretching strap clamping jaw is used for clamping the ear belt, the cutting knife is arranged on the machine table, and the cutting knife is used for cutting the ear belt.

8. The mask ear strap welding machine of claim 1, further comprising an ear strap clamping and reversing device, wherein the ear strap clamping and reversing device comprises a rotary seat, a clamping and welding cylinder and a clamping and welding clamping jaw, the rotary seat is rotatably arranged on the machine table, the clamping and welding cylinder is arranged on the rotary seat, the clamping and welding clamping jaw is connected with an output shaft of the clamping and welding cylinder, and the clamping and welding clamping jaw is used for clamping an ear strap.

9. The mask ear strap welding machine of claim 8, wherein the ear strap clamping and reversing device further comprises a rotary cylinder, the rotary cylinder is arranged on the machine table, and the rotary seat is connected with a rotating shaft of the rotary cylinder.

10. The mask ear band welding machine of claim 1, wherein the limiting member is provided with a soft rubber pad on the side far away from the V-shaped seat, and the soft rubber pad is used for supporting the edge of the mask body.