CN113844042B - Mask welding folding mechanism of mask machine - Google Patents

Abstract

The invention discloses a mask welding folding mechanism of a mask machine, which comprises an ear strap, a head strap welding mechanism and a mask folding mechanism, wherein a limit rail is arranged at the head strap welding mechanism and the mask folding mechanism along the mask conveying direction; the ear strap welding mechanism and the head strap welding mechanism are selectively opened for use; the ear strap and the headband welding mechanism are arranged to follow the mask to move back and forth to weld the headband, and the ultrasonic welding mechanism on the mask folding mechanism welds the edge of the mask through rolling, so that the mask conveying is not stopped. The invention enables the headband welding mechanism and the ear band welding mechanism to be cooperatively applied to one production line, thereby realizing the cost control of equipment; the mask does not need to be conveyed and welded in a stopped dynamic mode, and production efficiency is improved.

Description

Mask welding folding mechanism of mask machine

Technical Field

The invention relates to mask production equipment, in particular to a mask welding folding mechanism of a mask machine.

Background

Mask machines are classified into a flat mask machine for processing a flat mask, a vertical folding mask machine for processing an N95 mask, a cup type mask machine for processing a cup type mask, and the like, depending on the type of mask to be processed. The headband welding mechanism is a set of mechanism for welding the headband on the mask body, and if the upper headband and the lower headband are welded on the mask body when the mask body is tiled, the two bands can cross the mask body, so that the processing of the subsequent folding welding mechanism is affected; therefore, the welding of the mask body is finished firstly after the mask body is folded, and then the welding of the mask body is finished by the corresponding mask welding mechanism under the folding state. The ear strap welding is carried out after the ear strap welding mechanism is used for carrying out the folding and welding of the body, so that the headband welding and the ear strap welding production line cannot be integrated and used due to structural difference, and the equipment cost of a producer is improved. On the other hand, for welding the ear belt head belt of the mask and welding the folded rear edge of the subsequent mask, the conveying of the mask is stopped, and the conveying is restarted after the welding is finished, so that the time spent for starting and stopping the welding is recorded in the processing time of the whole procedure, and if the time spent for stopping the conveying process of the mask can be saved, the whole production efficiency of the mask can be improved.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a mask welding folding mechanism of a mask machine, which can integrate and simultaneously arrange an ear strap welding mechanism and a head strap welding mechanism on one production line, is suitable for welding a mask body which is tiled and conveyed with a head strap or an ear strap, is switched to use when a corresponding mask is processed, does not need to purchase two production lines or carry out complicated disassembly and debugging on the corresponding mechanism on one production line, greatly reduces equipment cost, reduces debugging difficulty and improves processing efficiency; the ear strap welding mechanism and the head strap welding mechanism are arranged to be capable of following the movement state of the mask in a reciprocating manner, the head strap and the ear strap are welded in the dynamic state of mask conveying, the welding can be completed when the mask is operated by the mask folding mechanism, the time for stopping and processing the mask is further saved, the processing efficiency of the mask machine production line is improved, and the economic benefit is improved.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a mask welding folding mechanism of mask machine, including the main frame, and the ear area welding mechanism that dock around on the main frame, bandeau welding mechanism and mask folding mechanism, it includes the installing support all to weld mechanism and bandeau welding mechanism, be provided with the slide rail on the main frame, the installing support can slide relative gauze mask direction of delivery through actuating mechanism sets up on the slide rail, the middle part of installing support has the conveying space that is used for carrying the gauze mask body, be provided with the conveying component that is used for carrying ear area or bandeau and be used for welding the welding mechanism on the gauze mask body of aural area or bandeau, welding mechanism includes the upper weldment and the lower weldment of mutually supporting, conveying component and upper weldment set up in the top of conveying space, lower weldment sets up in the below of conveying space, still be provided with a spacing rail along the direction of gauze mask body in bandeau welding mechanism's conveying space, the bandeau that the conveying component of bandeau welding mechanism carried is located the upside of spacing rail, the gauze mask body is located the downside of spacing rail, carry out foling to gauze mask and body when bandeau welding mechanism's upper weldment and lower weldment are relative, carry out the rate and drive the mask with the carrier and carry out the welding with the corresponding mask of bandeau welding mechanism, carry out the speed and drive movement after the welding with the mask by the actuating mechanism, carry out the welding state with the bandeau welding mechanism, and mask is finished after the welding is moved by the actuating mechanism; the mask folding mechanism comprises a plurality of groups of material pulling rollers, an angular folding plate, an ultrasonic welding mechanism and a material cutting roller, wherein the material pulling rollers are arranged at the front and rear positions of the angular folding plate, the ultrasonic welding mechanism and the material cutting roller to provide power for pulling the mask to move, the material pulling rollers in front of the angular folding plate are arranged in a transverse state, the material pulling rollers behind the angular folding plate are arranged in a vertical state, the ultrasonic welding mechanism and the material cutting roller are both arranged in a vertical state, the ultrasonic welding mechanism comprises an ultrasonic generating mechanism, an ultrasonic die and a matching roller, the ultrasonic generating mechanism is connected with the ultrasonic die, the matching roller is vertically and rotatably arranged at one side of the ultrasonic die, the mask is provided between the ultrasonic die and the matching roller for passing through, the matching roller rolls when the mask is pulled and conveyed, and the ultrasonic die and the rolling matching roller extrudes the mask welding part; the limiting rail extends from the head band welding mechanism to the upper part of the mask folding mechanism, limits the head band to the upper part of the mask folding mechanism, and conveys the mask body in the mask folding mechanism; the ear strap welding mechanism and the head strap welding mechanism are alternatively turned on for use, the other one is turned off for use, and when the conveying space of the ear strap welding mechanism and the head strap welding mechanism is conveyed by the mask body, the disabled mechanism is conveyed to pass through, and the enabled mechanism is used for welding.

As an improvement, the ear band welding mechanism and the head band welding mechanism are respectively arranged in a front group and a rear group on the main frame, and respectively correspond to two stations to weld two positions on the mask in the conveying direction.

The mask has the beneficial effects that the functions of ear strap welding and head strap welding are integrated, the ear strap welding mechanism and the head strap welding mechanism are arranged on one production line, the mask is suitable for welding a mask body which is tiled and conveyed with the head strap or the ear strap, the mask is switched to be used when the mask is processed correspondingly, the head strap welding mechanism enables the head strap and the mask body to be respectively positioned at the upper side and the lower side by arranging the limit rail at the conveying space, and after the welding of the head strap and the mask body is completed, the head strap can be hung on the limit rail to be supported, so that the mask body cannot be randomly placed; when the mask body and the head bands are conveyed to the mask folding mechanism backwards, the head bands are suspended above the limiting rails, so that folding and edge welding of the mask body and blanking of the mask folding mechanism are not affected; after integrating ear strap welding and bandeau welded function, just need not to purchase two production lines or carry out the loaded down with trivial details dismouting debugging of corresponding mechanism to a production line, greatly reduced equipment cost to and reduce the debugging degree of difficulty and improve machining efficiency. The earstripe welding mechanism and the headband welding mechanism which move at the same speed as the mask are arranged, so that the earstripe or headband can be welded on the mask under the condition that the mask is not stopped from being conveyed, the earstripe welding mechanism and the headband welding mechanism back to the next mask to be aligned after the mask is welded, and then the earstripe or headband is welded again at the same speed; the ultrasonic die at the ultrasonic welding mechanism and the matched roller are in rolling welding, so that the mask is not required to stop, the stay time of the mask is further saved, the whole mechanism can adapt to a mask production line for continuous conveying, namely, the mask is not required to be stopped like a previous machine, conveying is restarted after welding is completed, the production efficiency is improved, and the economic benefit is improved.

Drawings

Fig. 1 is a schematic perspective view of a mask welding folding mechanism of a mask machine according to the present invention.

Fig. 2 is a schematic perspective view of a mask folding mechanism according to the present invention.

Fig. 3 is a schematic perspective view of another view angle of the mask folding mechanism of the present invention.

Fig. 4 is a schematic perspective view of an ultrasonic welding mechanism according to the present invention.

Fig. 5 is a schematic perspective view of the headband welding mechanism of the present invention when two sets are consecutively arranged.

Fig. 6 is a schematic view of a partial front view of the headband welding mechanism of the present invention.

Fig. 7 is a partial perspective view of the headband welding mechanism of the present invention.

Fig. 8 is a partial perspective view of another orientation of the headband welding mechanism of the present invention.

Fig. 9 is a schematic perspective view of the ear strap welding mechanism of the present invention when two sets are provided in series.

Fig. 10 is a partial perspective view of the ear strap welding mechanism of the present invention.

Fig. 11 is a schematic view of a partial perspective view of an ear strap welding mechanism of the present invention in another orientation.

Fig. 12 is a schematic front view of the spacing rail of the present invention mated with the headband and mask body.

Fig. 13 is a schematic top view of the present invention when the spacing rail is mated with the ear/headband and mask body.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 13, a mask welding and folding mechanism of a mask machine according to the present invention comprises a main frame 0, and an ear strap welding mechanism c, a head strap welding mechanism b and a mask folding mechanism a which are butt-jointed on the main frame 0, wherein the ear strap welding mechanism c and the head strap welding mechanism b each comprise a mounting bracket b0, a slide rail 01 is provided on the main frame 0, the mounting bracket b0 is slidably provided on the slide rail 01 relative to the mask conveying direction through a driving mechanism, a conveying space b01 for conveying the mask body is provided in the middle of the mounting bracket b0, a conveying component b02 for conveying the ear strap or the head strap and a welding mechanism b4 for welding the ear strap or the head strap to the mask body are provided on the mounting bracket b0, the welding mechanism b4 comprises an upper welding member b41 and a lower welding member b42 which are matched with each other, the conveying assembly b02 and the upper welding piece b41 are arranged above the conveying space b01, the lower welding piece b42 is arranged below the conveying space b01, a limiting rail b03 is further arranged in the conveying space b01 of the head band welding mechanism b along the conveying direction of the mask body, the head band to be welded conveyed by the conveying assembly b02 of the head band welding mechanism b is positioned on the upper side of the limiting rail b03, the mask body is positioned on the lower side of the limiting rail b03, when the upper welding piece b41 and the lower welding piece b42 of the head band welding mechanism b are folded, the head band and the mask body are welded, the head band is supported by the limiting rail b03, the mounting bracket b0 is driven by the driving mechanism to move at the same speed as the mask, the head band or the ear band is welded with the mask in a moving state, and the driving mechanism drives the mounting bracket b0 to retreat to correspond to the mask to the next to be welded after the welding is finished; the mask folding mechanism a comprises a plurality of groups of material pulling rollers a1, an angular folding plate a2, an ultrasonic welding mechanism a3 and a material cutting roller a4, the material pulling rollers a1 are arranged at the front and rear positions of the angular folding plate a2, the ultrasonic welding mechanism a3 and the material cutting roller a4 to provide power for pulling the mask to move, the material pulling roller a1 before the angular folding plate a2 is arranged in a transverse state, the material pulling roller a1 after the angular folding plate a2 is arranged in a vertical state, the ultrasonic welding mechanism a3 and the material cutting roller a4 are both arranged in a vertical state, the ultrasonic welding mechanism a3 comprises an ultrasonic generating mechanism a31, an ultrasonic die a32 and a matching roller a33, the ultrasonic generating mechanism a31 is connected with the ultrasonic die a32, the matching roller a33 is vertically and rotatably arranged at one side of the ultrasonic die a32, the ultrasonic die a32 and the matching roller a33 are used for penetrating through, and when the mask is pulled and conveyed, the matching roller a33 rolls, and the ultrasonic die a32 and the rolling matching roller a33 extrudes the mask welding part; the limiting rail b03 extends to the upper part of the mask folding mechanism a from the head band welding mechanism b, limits the head band to the upper part of the mask folding mechanism a, and conveys the mask body in the mask folding mechanism a; the ear strap welding mechanism c and the head strap welding mechanism b are alternatively turned on for use, the other one is turned off for use, and when the conveying space b01 of the ear strap welding mechanism c and the head strap welding mechanism b is conveyed by the mask body, the disabled mechanism is conveyed to pass through, and the enabled mechanism is used for welding.

When the mask is used, the mask is applied to the last several procedures of one production line of a mask machine, and the ear strap welding mechanism c, the head strap welding mechanism b and the mask folding mechanism a are sequentially butted at the end of the whole production line; horizontally placing and conveying the mask on a production line to finish the previous processing procedure; in the prior art, the mask is in a strip shape for conveying, outlet mask bodies are processed on the strip at equal intervals, and a plurality of strip-shaped mask bodies are conveyed along the conveying direction of a conveying space b01; the ear strap welding mechanism c and the head strap welding mechanism b are alternatively started for use, the other mechanism is stopped, the mask body is directly conveyed through the stopped mechanism, and welding is completed at the started mechanism. When the ear band welding mechanism c and the head band welding mechanism b are respectively started, the ear band or the head band is conveyed to a conveying space b01 by a conveying component b 02; after the middle ear strap welding mechanism c is positioned at a welding position of a mask body, the upper and lower welding parts b41 and b42 are movably folded up and down to press the ear strap and the mask for welding and forming, the state of the mask body and the ear strap after welding is shown as the upper mask in fig. 13, the ear strap is folded inwards at two sides and overlapped with the mask in the clamped conveying process, and the welding and trimming at the folding mechanism a of the subsequent mask are not affected. And the head band welding mechanism b is provided with a limit rail b03, the head band stretches across the upper side of the limit rail b03 at the conveying assembly b02, the head band is relatively vertical to the mask body and the limit rail b03, the mask body is positioned on the lower side of the limit rail b03, and after one mask body reaches a welding position, the head band and the mask are pressed by folding the upper welding part b41 and the lower welding part b42 in an up-down moving way to be welded and formed. The state of the mask body and the headband after the welding is finished is shown in fig. 12 and 13, and the headband is supported by the limiting rail b03 to be hung and not placed on the surface of the mask body; the limit rail b03 continues to extend to the upper portion of the mask folding mechanism a, and the headband is suspended in the upper space. When the lower mask reaches the input end of the mask folding mechanism a, a group of material pulling rollers a1 in a transverse state keep the mask to be horizontally stable, the subsequent angular folding plate a2 completes the downward folding of the mask, and then the mask is clamped by a group of material pulling rollers a1 in a vertical state and is continuously conveyed backwards; the material pulling roller a1 can convey the mask in a conventional double-roller clamping mode, and the double-roller external power mechanism rotates; the mask is subjected to ultrasonic welding on the edge of the mask after being folded when reaching the ultrasonic welding mechanism a3, and then the edge of the mask is cut off by the blanking roller a4, so that the mask body in the middle part is separated from external waste materials, and the mask body and the waste materials are respectively collected along with continuous conveying to finish the processing procedure of the mask. The plurality of groups of material pulling rollers a1 are arranged in front and behind the ultrasonic welding mechanism a3 and the material cutting roller a4 according to the requirements, so that the whole line can well pull and convey the mask. After the folding of the mask body is completed in the mask folding mechanism a, the headband is hung on the limiting rail b03 as shown in fig. 12, and the longer headband cannot be pulled downwards, so that the edge of the mask body to be welded and cut cannot be interfered by the headband, the edge of the ear strap, which is welded and cut, cannot be affected by the inner side of the mask body, and the welding and cutting of the folded rear edge of the mask body can be successfully completed. Then, along with the continuous conveying, the mask can be taken off from the outlet end of the limit rail b 03. The mask welding folding mechanism can be applied to a tiled mask conveying and processing production line, two production lines are not required to be purchased or one production line is required to be subjected to complex disassembly and assembly debugging of a corresponding mechanism after integrating the functions of ear strap welding and head strap welding, and a user can directly switch the mask welding folding mechanism for use, so that the equipment cost is greatly reduced, the debugging difficulty is reduced, and the processing efficiency is improved.

On the other hand, when the mask machine production line is used, the mask machine production line is arranged in an integral mask machine production line, all working procedures of the mask machine production line can adopt a mounting bracket mode capable of moving back and forth, and by arranging all mechanisms on all mounting brackets, the mounting brackets move back and forth on the sliding rails, so that all mechanisms can move along with a mask together, and then retreat after finishing processing, and then follow the next mask. Be applied to ear area welding mechanism c and bandeau welding mechanism b, the setting that the installing support b0 of both can slide is on slide rail 01, and actuating mechanism can specifically adopt the mode of motor cooperation lead screw slider, and then drives installing support b0 and advance or retreat. For the correspondence between the mounting bracket b0 and the mask position, the mask can be aligned to the next mask by presetting the distance between the masks and backing back the set distance after the head band of one mask is welded; or the mode that the sensor senses the position of the mask is adopted, and when the mask is retracted to correspond to the next mask, the sensor gives feedback, so that the mounting bracket b0 advances and follows. The ultrasonic welding mechanism a3 can adapt to the mask production line with continuous conveying of the preamble, namely, the mask does not need to be stopped like the prior machine, and conveying is started after welding is finished. When the specific ultrasonic welding mechanism a3 is applied, ultrasonic welding can be carried out without stopping, when the mask is pulled and conveyed by the front and rear material pulling rollers a1, the passing of the mask is ensured by the rolling of the matching roller a33, the edge welding position is pressed by the ultrasonic die a32 and the matching roller a33 along with the advancing sequence, the continuous starting operation of the ultrasonic welding mechanism a31 is carried out, the welding position is smaller than the original condition range of being clamped by the die integrally, namely, the line contact of the whole edge is changed into the point contact of a small range in the rolling process, the energy of the contact position per unit time is larger by the ultrasonic wave generation in the small range, the welding quality of the mask is ensured as a whole, and the mask production line with the adapting pair can meet the welding and blanking in the continuous conveying process of the mask, so that the production efficiency is improved. The mask welding folding mechanism ensures that the conveying of the mask does not need to stop, and each station does not need to stop the whole production line for processing the mask, so that the conveying and processing efficiency can be improved, and the economic benefit is improved.

As an improved embodiment, the ear band welding mechanism c and the head band welding mechanism b are respectively arranged in a front group and a rear group on the main frame 0, and respectively correspond to two stations for welding two positions on the mask in the conveying direction.

As shown in fig. 1, 5 and 9, in order to improve the efficiency of welding the ear bands and the head bands of the mask, the ear band welding mechanism c and the head band welding mechanism b are optimally arranged into a front group and a rear group, and the head bands are provided with a left ear band and a right ear band and a top head band and a bottom ear band, so that the two groups of the ear band welding mechanism c and the head band welding mechanism b can be sequentially arranged on the mask conveying line as shown in the figure, and the feeding welding is carried out corresponding to the positions of the left ear band, the right ear band and the top head band as well as the positions of the top head band and the bottom head band; when the two ear belt welding mechanisms c and the head belt welding mechanism b synchronously follow the mask, the welding work of the two ear belts and the head belt on one mask can be completed once, the first ear belt (the first head belt) is welded on the first position of the front mask by the front ear belt welding mechanism c (the head belt welding mechanism b), the second ear belt (the second head belt) is welded on the second position of the rear mask by the rear ear belt welding mechanism c (the head belt welding mechanism b), so that each mask can complete the welding of the two ear belts and the head belt in the continuous advancing process, the welding positions of the two groups of ear belt welding mechanisms c and the head belt welding mechanism b do not need to be adjusted corresponding to the respective ear belt and head belt positions, the debugging time of the mechanism is further saved, and the efficiency is doubled; the two groups of mechanisms can reasonably utilize the front and rear space of the main frame 0 to carry out mechanism arrangement; and (3) finishing welding processing of the two ear straps and the head straps on the two masks every time, and finishing welding of the two ear straps or the head straps through the masks after passing through the two ear strap welding mechanisms c or the head strap welding mechanism b in sequence.

As an improved specific embodiment, the limit rail b03 extends from the two groups of headband welding mechanisms b to the conveying space b01 of the two groups of ear band welding mechanisms c and is arranged along the conveying direction of the mask body.

As shown in fig. 1, the limiting rail b03 arranged in this way extends and is arranged in each mechanism, and along the mask conveying line of the ear strap welding mechanism c and the head strap welding mechanism b, the inlet end of the limiting rail b03 extends to the inlet end of the ear strap welding mechanism c or is more forward, so that when the mask enters the subsequent welding mechanism, the mask body can be assisted by the good auxiliary limiting rail b03 at the upper part, and the positions of the ear strap welding mechanism c and the head strap welding mechanism b are covered by the limiting rail, so that the auxiliary mask body is conveyed better at each mechanism.

As an improved specific embodiment, the limit rail b03 is a steel wire capable of bending and shaping, and the limit rail b03 at the ear strap welding mechanism c and the head strap welding mechanism b is pressed on the upper part of the mask body by means of self weight.

As shown in fig. 1, 2, 3 and 6, the arrangement route of the limit rail b03 is generally shown in the drawing, in order to facilitate the highly flexible adjustment of the limit rail b03 during arrangement, it is preferable to select a steel wire capable of bending and shaping as the limit rail b03, which is arranged at a lower position against the mask body at the head strap welding mechanism b and the ear strap welding mechanism c, and relies on self weight to press the mask body to assist in limiting the mask body at the upper portion, so as to improve the stability of mask transportation, and after reaching the mask folding mechanism a, the mask is lifted upwards along the angular folding plate a2 by virtue of good plastic effect, and arranged above the subsequent mechanism, without affecting the transportation, welding and blanking of the mask body below.

As an improved specific embodiment, the upper part of the pulling roll a1 is provided with a clamping mechanism a7, the limit rail b03 is clamped by the clamping mechanism a7 along the length direction of the pulling roll a1, and the clamping mechanism a7 can be switched between clamping and loosening, so that when the clamping mechanism a7 is loosened, the upper space of the limit rail b03 is opened for the head belt to pass through.

As shown in fig. 1, 2, 3, 12 and 13, the state of the mask body and the headband after the headband welding mechanism b is welded is shown in fig. 12 and 13, the position limitation of the limiting rail b03 is realized by the clamping mechanism a7, the limiting rail b03 is limited above the conveying position of the mask body by the clamping mechanism a7 at a plurality of positions, and the clamping mechanism a7 is opened for the headband to pass through when the headband of one mask body passes through one clamping mechanism a7 during the conveying process (as shown in the lower diagram of fig. 12), and the plurality of groups of clamping mechanisms a7 at the front and back positions are still in the clamping state, so that the position of the limiting rail b03 can be kept stable.

As an improved embodiment, the clamping mechanism a7 includes a clamping cylinder a71 and a pair of clamping jaws a72 driven by the clamping cylinder a71, and the pair of clamping jaws a72 are closed or opened when driven by the clamping cylinder a 71.

As shown in fig. 1, 2, 3, 12 and 13, the clamping cylinder a71 provides the position adjustment of two stations where the pair of clamping jaws a72 are folded or unfolded, and is simple and practical; the pair of clamping jaws a72 can clamp the limit rail b03 well when being folded, and the peripheral space of the limit rail b03 is opened when being opened, so that the headband can pass smoothly, and the structure is simple and convenient to realize.

As an improved specific embodiment, the inlet end or/and the outlet end of the conveying space b01 is/are provided with a supporting seat b04 and a rolling shaft b05 which are arranged up and down, the lower part of the mask body is supported by the supporting seat b04, the upper part of the mask body is conveyed in a rolling way by the rolling shaft b05, and a limit rail b03 penetrates between the supporting seat b04 and the rolling shaft b 05.

As shown in fig. 7 and 8, a production line with multiple working stations is provided on the mask machine, each working station corresponds to a working procedure for processing the mask, the whole mask is powered by a conveying mechanism provided on the production line to convey forwards, and under the embodiment, a supporting seat b04 and a rolling shaft b05 are provided at a position corresponding to the headband welding mechanism b (and the ear strap welding mechanism c), so that the supporting seat b04 of the headband welding mechanism b (and the ear strap welding mechanism c) provides support for the mask, the conveying of the mask is stable and orderly, the rolling shaft b05 is pressed at the supporting seat b04 to clamp the mask between the supporting seat b04, and the conveying of the mask drives the rolling shaft b05 to roll, so that the mask can be conveyed orderly. The mask at the headband welding mechanism b (and the ear band welding mechanism c) is also enabled to be higher in welding stability by means of the limiting effect of the supporting seat b04 and the rolling shaft b 05. The limit rail b03 passes through the space between the supporting seat b04 and the roller b05, thereby playing a good limit role.

As an improved specific embodiment, the roller b05 comprises an arrangement shaft b051 and a bearing b052 arranged on the arrangement shaft b051, the bearing b052 is in contact fit with the mask body, and a notch b053 for limiting the deflection of the limit rail b03 is formed in the middle of the arrangement shaft b051 by the two bearings b 052.

As shown in fig. 6, 7 and 8, the arrangement shaft b051 is fixedly arranged, and is pressed towards the mask through the arranged bearing b052 to roll with the mask for feeding, so that smooth and orderly mask conveying is maintained; and a plurality of bearings b052 are further arranged and a gap b053 is formed in the middle of the arrangement shaft b051, when the limit rail b03 preferably adopts a structure with certain deformability, such as a steel wire, which passes through between the roller b05 and the supporting seat b04 and is pressed by the bearings b052 to perform certain limit, the position of the limit rail b03 can be centrally accommodated or clamped by the lower gap b053, and the stability and the order of the structure are ensured.

As an improved specific embodiment, a debugging roller set a6 is further arranged between the angular folding plate a2 and the blanking roller a4, the debugging roller set a6 comprises a fixed roller a61 positioned at the front and the rear parts and a debugging roller a62 positioned at the middle part, the debugging roller a62 is arranged on a translation mechanism a63 and is used for vertically translating relative to the mask conveying direction, the mask sequentially bypasses the front fixed roller a61, the debugging roller a62 and the rear fixed roller a61, and when the translation mechanism a63 is used for carrying out translation adjustment on the debugging roller a62, the bypassing length of the mask between the two fixed rollers a61 is changed.

As shown in fig. 1, 2 and 3, when in use, the mask sequentially bypasses the front fixed roller a61, the debugging roller a62 and the rear fixed roller a61, and the bypass length between the two fixed rollers a61 can be adjusted by the debugging roller a 62; the translation mechanism a63 can be realized in a mode of a screw rod sliding block, the adjusted debugging roller a62 vertically translates relative to the mask conveying direction, the outer side of the debugging roller a62 translates, the length of the mask which is required to bypass the debugging roller a62 is larger, otherwise, the length of the mask which is required to bypass is smaller, only the front and rear positions of each mask which reaches the blanking roller a4 can be adjusted, the edge cutting position of the mask body which is accurately corresponding to the blanking roller a4 can be adjusted, and the product cost rate can be further ensured; and the mask can be flexibly debugged according to different types of processed masks, and the applicability is wide. The position of the adjustment roller set a6 in fig. 1 is different from the positions arranged in fig. 2 and 3, that is, the adjustment roller set a6 is arranged before or after the ultrasonic welding mechanism a3, and the normal use of the ultrasonic welding mechanism is not affected, so long as the position adjustment is realized before the arrangement of the blanking roller a 4.

As a modified embodiment, a group of pulling rolls a1 are arranged at the front and rear positions of the adjusting roll group a 6.

As shown in fig. 2 and 3, the material pulling rollers a1 are arranged in front of and behind the regulating roller set a6, so that good front-back power is provided for mask conveying at the regulating roller set a6, flatness of mask conveying at the regulating roller set a6 is ensured, and adjustment of the length position of the mask is more accurate and stable.

As an improved embodiment, the device also comprises a discharging roller a5 arranged behind the blanking roller a4 and a scrap roller a51 arranged on the side edge of the discharging roller a 5.

As shown in fig. 1, 2 and 3, the mask body with the edge cut at the blanking roller a4 and the external waste material are separated, the discharging roller a5 is sequentially abutted against the blanking roller a4, the material pulling roller a1 can be arranged between the mask body and the discharging roller a4 to provide discharging power, the mask body is discharged from the discharging roller a5 along with conveying, one end of the waste material is connected to the waste material roller a51, and the waste material is pulled to the side by the winding of the waste material roller a51 to collect the waste material.

As an improved specific embodiment, the conveying assembly b02 comprises a storage mechanism b1, a pulling mechanism b2 and a clamping mechanism b3; the storage mechanism b1 is arranged at one side of the material pulling mechanism b2 and is used for winding and discharging ear belts or head belts; the material pulling mechanism b2 comprises a first clamping jaw b21 arranged close to the material storing mechanism b1, a second clamping jaw b22 capable of being close to or far away from the first clamping jaw b21, and a scissors member b23 arranged on one side of the first clamping jaw b21 close to the second clamping jaw b22, wherein the first clamping jaw b21 clamps or loosens the ear belt or the head belt output by the material storing mechanism b1, the second clamping jaw b22 clamps the ear belt or the head belt at the first clamping jaw b21 when approaching the first clamping jaw b21 and pulls out a section of the ear belt or the head belt after being far away, and the scissors member b23 is used for cutting a section of the ear belt or the head belt pulled out by the second clamping jaw b 22; the clamping mechanism b3 comprises a third clamping jaw b31 and a fourth clamping jaw b32 which are respectively arranged close to the first clamping jaw b21 and the second clamping jaw b22, wherein the third clamping jaw b31 and the fourth clamping jaw b32 can be horizontally and rotatably arranged, the third clamping jaw b31 and the fourth clamping jaw b32 are used for clamping a drawn-out section of ear band or head band when being respectively rotated to the positions close to the first clamping jaw b21 and the second clamping jaw b22, and rotating after the drawn-out section of ear band or head band is sheared, so that two ends of the section of ear band or head band are rotated to welding positions; the middle position of the upper welding part b41 and the lower welding part b42 is the welding position where the two ends of the ear band or the head band stay.

As shown in fig. 6, 7, 8, 10, and 11, the entire strip of the ear band or the head band which is not cut in a long shape is placed around the storage mechanism b1, and one end of the ear band or the head band is output from the storage mechanism b 1. The first clamping jaw b21 in the material pulling mechanism b2 clamps the ear belt or the head belt at a position close to the output end of the material storing mechanism b1, the second clamping jaw b22 is oppositely arranged on the other side, after the second clamping jaw b22 moves close to the first clamping jaw b21, the ear belt or the head belt is clamped by the second clamping jaw b22, the first clamping jaw b21 loosens the ear belt or the head belt, when the second clamping jaw b22 moves away from the first clamping jaw b21 and returns to the initial position on the other side, the ear belt or the head belt is pulled out for a fixed length, and then the first clamping jaw b21 clamps again, so that two ends of the pulled ear belt or head belt are fixed. When the third clamping jaw b31 and the fourth clamping jaw b32 in the clamping mechanism b3 respectively rotate and move to positions of two sides corresponding to the first clamping jaw b21 and the second clamping jaw b22, the two ends of the ear belt or the head belt are clamped by folding, and then the scissors member b23 can start to cut off the ear belt or the head belt at the first clamping jaw b21, and the section of ear belt or the head belt is a section of ear belt or head belt to be welded on the mask body; then, the ear straps or the head straps are moved to the welding position by the rotational movement of the third clamping jaw b31 and the fourth clamping jaw b 32. The upper welding part b41 and the lower welding part b42 in the welding mechanism b4 are respectively arranged on the upper side and the lower side, a space is reserved in the middle for conveying mask wires, the material storage mechanism b1, the material pulling mechanism b2 and the material clamping mechanism b3 are respectively arranged on the upper side, the mask in the prior art is in a strip shape for conveying, the outlet mask body is processed at equal intervals on the strip, after one mask body reaches a welding position, the upper welding part b41 and the lower welding part b42 are movably folded up and down, the ear bands or the head bands and the mask are pressed for welding forming, then the mechanism is reset, the procedures are repeated, and the welding of the ear bands or the head bands of the mask can be orderly completed. The automatic conveying ear belt or the head belt can be automatically conveyed in place, the ear belt or the head belt and the mask body are welded, manual feeding and discharging are not needed in the whole process, labor force is liberated, machining efficiency is improved, and product quality can be guaranteed. For the feeding of the ear belt or the head belt, the feeding mechanism of the ear belt or the head belt can be further externally connected with the feeding mechanism of the head belt or the head belt through the feeding mechanism b1, so that the automatic feeding of the ear belt or the head belt is realized, and the time of manual participation is reduced. And the headband on the mask is provided with an upper headband and a lower headband, two groups of headband welding mechanisms b and ear band welding mechanisms c can be sequentially arranged on the mask conveying line as shown in fig. 1, 5 and 9, the positions of the upper headband, the lower headband, the left ear band and the right ear band are correspondingly provided with feeding welding, and the angles of the headband welding mechanisms b and the ear band welding mechanisms c are correspondingly different because the positions of the headband, the ear band and the mask body are different.

As an improved specific embodiment, the storage mechanism b1 comprises an upper winding wheel b11, a lifting winding wheel b12 and a lower winding wheel b13, wherein the upper winding wheel b11 is connected with a driving mechanism b14 for providing power for discharging, and the upper winding wheel b11 is wound with an ear belt or a head belt, and the ear belt or the head belt sequentially winds the lifting winding wheel b12 and the lower winding wheel b13 to the first clamping jaw b 21; the lifting winding wheel b12 is arranged on the vertical shaft b15 in a lifting manner, a sensor b16 for detecting the position of the lifting winding wheel b12 is arranged at the lower part of the corresponding vertical shaft b15, the lifting winding wheel b12 is correspondingly positioned at the sensor b16 in the initial position, and when the second clamping jaw b22 pulls materials, the ear belt or the head belt is pulled away from the storage mechanism b1, and the lifting winding wheel b12 rises; when the sensor b16 detects that the lifting winding wheel b12 ascends and leaves, the feedback signal starts the driving mechanism b14 to discharge the ear belt or the head belt, so that the lifting winding wheel b12 descends to the sensor b 16.

As shown in fig. 7, 8, 10, 11, the upper winding wheel b11 can store an ear band or a head band, or is externally connected with an ear band or head band conveying mechanism to wind the ear band or the head band; then the ear belt or the head belt is wound around the lifting winding wheel b12 and the lower winding wheel b13 in turn until reaching the position of the first clamping jaw b 21; of course, the three-part winding wheel is a basic structure, and a wheel structure, a hole structure, a rod structure and the like for winding the ear belt or the head belt can be added between the three-part winding wheels for better guiding and position limiting of the ear belt or the head belt; and the three-part winding wheel can also be arranged into a structure with a plurality of wheels, so that the ear belt or the head belt can be wound more orderly. The lifting winding wheel b12 and the sensor b16 are arranged, so that intermittent feeding of the ear belt or the head belt is realized, namely the material pulling mechanism b2 pulls once material, after the lifting winding wheel b12 is lifted, the driving mechanism b14 is started once to discharge once material by the feedback signal of the sensor b16, and the driving mechanism b14 stops after the material is discharged in place; therefore, the material pulling mechanism b2 can orderly pull materials, the driving mechanism b14 can provide power for timely feeding, so that the feeding of the ear belts or the head belts at the storage mechanism b1 is stable, the ear belts or the head belts are well driven to be conveyed by the power, the whole ear belts or the head belts can be better prevented from being pulled by excessive stress by the aid of the material pulling mechanism b2, and the conveying power can be provided by the driving mechanism b14 at the input end under the condition that the external ear belts or the head belts are conveyed by the external ear belts or the head belts.

As an improved embodiment, the material pulling mechanism b2 further comprises a first cylinder b210 for driving the first clamping jaw b21 to close or separate, a second cylinder b220 for driving the second clamping jaw b22 to close or separate, a sliding rail mechanism b25 for arranging the second clamping jaw b22 and the second cylinder b220, and a translation cylinder b24 for driving the second clamping jaw b22 and the second cylinder b220 to slide on the sliding rail mechanism b 25.

As shown in fig. 7, 8, 10, and 11, the first jaw b21 and the second jaw b22 are respectively closed or opened by the first cylinder b210 and the second cylinder b 220; the sliding rail mechanism b25 is a horizontally arranged rail and a sliding block on the rail, the second cylinder b220 and the second clamping jaw b22 are arranged on the sliding block, the sliding block is connected with the translation cylinder b24, and the sliding block, namely the second clamping jaw b22 on the sliding block, is driven to complete horizontal movement close to or far from the first clamping jaw b 21; each cylinder body can be realized by adopting specific embodiments such as a cylinder, an oil cylinder, an electric cylinder and the like according to requirements such as cost, places and performances.

As an improved embodiment, the first clamping jaw b21 comprises a first left jaw body b211 and a first right jaw body b212 which are horizontally arranged, a horizontal caulking groove b213 is formed in the surface of the first left jaw body b211 opposite to the first right jaw body b212, the first right jaw body b212 is laterally inserted into the caulking groove b213, and openings for a headband to pass through are formed at the front end and the rear end of the caulking groove b 213.

As shown in fig. 7, 8, 10 and 11, the first left jaw b211 and the first right jaw b212 clamp the headband when they are folded, and when they are released, the ear band or headband is located in the caulking groove b213, and the side surface of the caulking groove b213 is blocked by the first right jaw b212, so that the ear band or headband is prevented from falling out from the side surface when being pulled away by the second jaw b22, and the space enclosed by the first left jaw b211 and the first right jaw b212 by the caulking groove b213 can well limit the ear band or headband, so that the ear band or headband can be conveyed in order.

As an improved specific embodiment, the second clamping jaw b22 comprises a second left jaw body b221 and a second right jaw body b222 which are horizontally arranged, the front ends of the second left jaw body b221 and the second right jaw body b222 extend outwards to form a protruding clamping part b223, and the protruding clamping part b223 clamps an ear band or a head band which extends out of the first clamping jaw b21 when the second clamping jaw b22 approaches the first clamping jaw b21 through the position of the scissors member b 23.

As shown in fig. 8 and 10, a pair of protruding clamping portions b223 formed by extending the second left jaw b221 and the second right jaw b222 outwards are specifically used for folding and clamping the ear belt or the head belt, the pair of protruding clamping portions b223 are in a slender state in structure and can penetrate through the space between the opened scissors b23 to clamp the ear belt or the head belt extending out of the first jaw b21, so that structural interference between the structures of the second left jaw b221 and the second right jaw b222, the second cylinder b220, the sliding block and the like and the scissors b23 is well avoided, and the clamping and conveying of the ear belt or the head belt is orderly realized.

As an improved specific embodiment, the clamping mechanism b3 further comprises two third cylinder bodies b310 used for driving the third clamping jaw b31 and the fourth clamping jaw b32 to be folded or separated respectively, two fourth cylinder bodies b320 used for driving the third clamping jaw b31 and the fourth clamping jaw b32 to rotate respectively, a layout frame b33 used for arranging the third cylinder bodies b310 and the fourth cylinder bodies b320, and a lifting cylinder body b34 used for driving the layout frame b33 to lift up and down.

As shown in fig. 7, 8, wherein the third jaw b31 and the fourth jaw b32 illustrate headband clamping positions at the second jaw b22 adjacent to the first jaw b 21; as shown in fig. 10 and 11, wherein the third jaw b31 and the fourth jaw b32 show two rest states in the ear band clamping position as well as in the welding position, i.e. the drawing shows two pairs of jaws, the actual product being a left-right pair of jaws. The two groups of third cylinder bodies b310 respectively realize the folding or separating of the third clamping jaw b31 and the fourth clamping jaw b32, and the two groups of fourth cylinder bodies b320 respectively realize the rotation of the two positions of the third clamping jaw b31 and the fourth clamping jaw b 32; the arrangement frame b33 is used for uniformly arranging the third clamping jaw b31 and the fourth clamping jaw b32, and then the up-down positions of the third clamping jaw b31 and the fourth clamping jaw b32 can be adjusted through the specifically arranged lifting cylinder body b34, so that the lifting device can lift up in the moving process, the lifting device can lower and clamp the ear belt or the head belt in the clamping position of the ear belt or the head belt, interference with the ear belt or the head belt in the moving process is avoided, the lifting device lowers the ear belt or the head belt to enable the ear belt or the head belt to be close to the mask body in the welding position, and the upper welding part b41 and the lower welding part b42 can be beneficial to accurately pressing the ear belt or the head belt and the mask body on the upper side and the lower side, and welding is completed in the accurate position. Each cylinder body can be realized by adopting specific embodiments such as a cylinder, an oil cylinder, an electric cylinder and the like according to requirements such as cost, places and performances.

As a modified embodiment, the third jaw b31 and the fourth jaw b32 each include a third left jaw body b311 and a third right jaw body b312, and the opposed clamping surfaces b313 of the third left jaw body b311 and the third right jaw body b312 are set in an inclined state.

As shown in fig. 7 and 10, the third left jaw b311 and the third right jaw b312 are specifically provided with inclined clamping surfaces b313, one side of the clamping surface b313 is arranged below to provide a certain supporting effect for the ear belt or the head belt, after the ear belt or the head belt is clamped by the two side clamping surfaces b313, the flat side of the ear belt or the head belt is inclined downwards (the cross section of the ear belt or the head belt is approximately rectangular), so that during subsequent welding, the upper welding part b41 can press the flat side towards the mask body better, and the welding position is kept flat.

As an improved embodiment, the welding mechanism b4 further includes an upper welding cylinder b410 for driving the upper welding member b41 to be lifted and a lower welding cylinder b420 for driving the lower welding member b42 to be lifted.

As shown in fig. 7 and 10, the upper welding cylinder b410 and the lower welding cylinder b420 respectively implement lifting of the upper welding member b41 and the lower welding member b42, and each cylinder may be implemented by using a specific embodiment of a cylinder, an oil cylinder, an electric cylinder, etc. according to the requirements of cost, site, performance, etc.

As an improved specific embodiment, the upper welding parts b41 are arranged in a left group and a right group and are used for correspondingly welding the positions of the two ends of the ear belt or the head belt; the lower welding member b42 is provided with a welding bearing surface for supporting the mask and the ear straps or the headband, and the welding bearing surface covers the positions of the two groups of upper welding members b 41.

As shown in fig. 7 and 10, the lower welding part b42 is provided with a welding bearing surface, and can be used for supporting the mask body well at the lower side, so that the mask body is stable during welding, and the upper welding part b41 is arranged to be left and right groups to correspond to the positions of the two ends of the welding ear bands or the head bands, so that the occupied space of the structure is small, the arrangement among the structures is facilitated, and the cost of parts is effectively controlled.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (10)

1. Mask welding folding mechanism of mask machine, its characterized in that: the mask comprises a main frame (0), and an ear band welding mechanism (c), a head band welding mechanism (b) and a mask folding mechanism (a) which are arranged on the main frame (0) in a front-back butt joint mode, wherein the ear band welding mechanism (c) and the head band welding mechanism (b) comprise mounting brackets (b 0), sliding rails (01) are arranged on the main frame (0), the mounting brackets (b 0) can slide relative to the mask conveying direction through driving mechanisms, conveying spaces (b 01) for conveying mask bodies are formed in the middle of the mounting brackets (b 0), conveying components (b 02) for conveying the ear bands or the head bands and welding mechanisms (b 4) for welding the ear bands or the head bands onto the mask bodies are arranged on the mounting brackets (b 0), the welding mechanisms (b 4) comprise upper welding pieces (b 41) and lower welding pieces (b 42) which are matched with each other, the conveying components (b 02) and the upper welding pieces (b 41) are arranged above the conveying spaces (b 01), the lower welding pieces (b 42) are arranged below the conveying spaces (b 01) and are also arranged in the conveying tracks (b 03) of the conveying mechanisms, and the head bands (b 03) are welded on the side of the conveying mechanisms (b 03) along the conveying tracks (b 02) and are welded on the side of the conveying tracks (b 01), the mask body is positioned at the lower side of the limit rail (b 03), when an upper welding piece (b 41) and a lower welding piece (b 42) of the headband welding mechanism (b) are folded, the headband and the mask body are welded, the headband is supported by the limit rail (b 03), the mounting bracket (b 0) is driven by the driving mechanism to move at the same speed as the mask, so that the headband or the ear belt and the mask are welded in a moving state, and after the welding is finished, the driving mechanism drives the mounting bracket (b 0) to retreat to correspond to the mask to be welded;

The mask folding mechanism (a) comprises a plurality of groups of material pulling rollers (a 1), an angular folding plate (a 2), an ultrasonic welding mechanism (a 3) and a material cutting roller (a 4), wherein the material pulling rollers (a 1) are arranged at the front and back positions of the angular folding plate (a 2), the ultrasonic welding mechanism (a 3) and the material cutting roller (a 4), power for pulling the mask to move is provided, the material pulling roller (a 1) in front of the angular folding plate (a 2) is arranged in a transverse state, the material pulling roller (a 1) behind the angular folding plate (a 2) is arranged in a vertical state, the ultrasonic welding mechanism (a 3) and the material cutting roller (a 4) are both arranged in a vertical state, the ultrasonic welding mechanism (a 3) comprises an ultrasonic generating mechanism (a 31), an ultrasonic die (a 32) and a matching roller (a 33), the ultrasonic generating mechanism (a 31) is connected with the ultrasonic die (a 32), the matching roller (a 33) is vertically and rotatably arranged at one side of the ultrasonic die (a 32), and the ultrasonic die (a 32) and the matching roller (a 33) are matched with the ultrasonic die (a 33) in a rolling mode when the ultrasonic die (a 33) is pushed and the ultrasonic die (a 33) is matched, and the ultrasonic die (33) is matched;

the limiting rail (b 03) extends to the upper part of the mask folding mechanism (a) from the head band welding mechanism (b), the head band is limited to the upper part of the mask folding mechanism (a), and the mask body is conveyed in the mask folding mechanism (a);

The ear strap welding mechanism (c) and the head strap welding mechanism (b) are alternatively turned on and used, the other one is turned off and deactivated, and when the ear strap welding mechanism (c) and the head strap welding mechanism (b) are conveyed in the conveying space (b 01), the deactivated mechanism is conveyed to pass through and the activated mechanism is used for welding.

2. The mask welding folding mechanism of a mask machine according to claim 1, wherein: the ear strap welding mechanism (c) and the head strap welding mechanism (b) are respectively arranged on the main frame (0) into a front group and a rear group, and respectively correspond to two stations to weld two positions on the mask in the conveying direction.

3. The mask welding folding mechanism of a mask machine according to claim 2, wherein: the limiting rail (b 03) extends from the two groups of head band welding mechanisms (b) to the conveying space (b 01) of the two groups of ear band welding mechanisms (c) and is arranged along the conveying direction of the mask body.

4. A mask welding folding mechanism of a mask machine according to claim 3, wherein: the limiting rail (b 03) is a steel wire capable of being bent and shaped, and the limiting rail (b 03) at the ear strap welding mechanism (c) and the head strap welding mechanism (b) is pressed on the upper portion of the mask body by means of self weight.

5. The mask welding folding mechanism of a mask machine according to claim 2, wherein: the upper portion of pulling roll (a 1) is provided with fixture (a 7), spacing rail (b 03) is followed its length direction and is carried out the centre gripping by fixture (a 7), and fixture (a 7) can carry out the switching of centre gripping and unclamping, makes the upper portion space of open spacing rail (b 03) when fixture (a 7) unclamped supply the bandeau to pass through.

6. The mask welding folding mechanism of a mask machine according to claim 2, wherein: the inlet end or/and the outlet end of the conveying space (b 01) are provided with a supporting seat (b 04) and a rolling shaft (b 05) which are arranged up and down, the lower part of the mask body is supported by the supporting seat (b 04), the upper part of the mask body is conveyed in a rolling way by the rolling shaft (b 05), and the limiting rail (b 03) penetrates between the supporting seat (b 04) and the rolling shaft (b 05).

7. The mask welding folding mechanism of a mask machine according to claim 6, wherein: the roller (b 05) comprises an arrangement shaft (b 051) and bearings (b 052) arranged on the arrangement shaft (b 051), the bearings (b 052) are in contact fit with the mask body, and a notch (b 053) for limiting the deflection of the limit rail (b 03) is formed in the middle of the arrangement shaft (b 051) by the two bearings (b 052).

8. The mask welding folding mechanism of a mask machine according to claim 2, wherein: the angle folding plate (a 2) and the blanking roller (a 4) are also provided with a debugging roller set (a 6), the debugging roller set (a 6) comprises a fixed roller (a 61) positioned at the front and the rear parts and a debugging roller (a 62) positioned at the middle part, the debugging roller (a 62) is arranged on a translation mechanism (a 63) and carries out vertical translation relative to the mask conveying direction, the mask sequentially bypasses the front fixed roller (a 61), the debugging roller (a 62) and the rear fixed roller (a 61), and when the translation adjustment is carried out on the debugging roller (a 62) through the translation mechanism (a 63), the bypassing length of the mask between the two fixed rollers (a 61) is changed.

9. The mask welding folding mechanism of a mask machine according to claim 2, wherein: the conveying assembly (b 02) comprises a storage mechanism (b 1), a pulling mechanism (b 2) and a clamping mechanism (b 3);

the material storage mechanism (b 1) is arranged at one side of the material pulling mechanism (b 2) and is used for winding and discharging ear belts or head belts;

the material pulling mechanism (b 2) comprises a first clamping jaw (b 21) arranged close to the material storage mechanism (b 1), a second clamping jaw (b 22) capable of being close to or far away from the first clamping jaw (b 21), and a scissors member (b 23) arranged on one side, close to the second clamping jaw (b 22), of the first clamping jaw (b 21), wherein the first clamping jaw (b 21) clamps or loosens an ear band or a head band output by the material storage mechanism (b 1), the second clamping jaw (b 22) clamps the ear band or the head band of the first clamping jaw (b 21) when being close to the first clamping jaw (b 21) and pulls out a section of the ear band or the head band after being far away from the first clamping jaw, and the scissors member (b 23) is used for cutting off the section of the ear band or the head band pulled out by the second clamping jaw (b 22);

The clamping mechanism (b 3) comprises a third clamping jaw (b 31) and a fourth clamping jaw (b 32) which are respectively close to the first clamping jaw (b 21) and the second clamping jaw (b 22), wherein the third clamping jaw (b 31) and the fourth clamping jaw (b 32) can be horizontally and rotatably arranged, and the third clamping jaw (b 31) and the fourth clamping jaw (b 32) are used for clamping a drawn-out section of ear band or head band when being respectively rotated to the positions close to the first clamping jaw (b 21) and the second clamping jaw (b 22), and rotating after the drawn-out section of ear band or head band is cut off, so that two ends of the section of ear band or head band are rotated to a welding position;

the middle position of the upper welding piece (b 41) and the lower welding piece (b 42) is the welding position where two ends of the ear belt or the head belt stay.

10. The mask welding folding mechanism of a mask machine according to claim 9, wherein: the storage mechanism (b 1) comprises an upper winding wheel (b 11), a lifting winding wheel (b 12) and a lower winding wheel (b 13), wherein the upper winding wheel (b 11) is connected with a driving mechanism (b 14) for providing power for discharging, the upper winding wheel (b 11) is wound with an ear belt or a head belt, and the ear belt or the head belt sequentially winds the lifting winding wheel (b 12) and the lower winding wheel (b 13) to the first clamping jaw (b 21); the lifting winding wheel (b 12) is arranged on the vertical shaft (b 15) in a lifting manner, a sensor (b 16) for detecting the position of the lifting winding wheel (b 12) is arranged at the lower part corresponding to the vertical shaft (b 15), the lifting winding wheel (b 12) is correspondingly positioned at the sensor (b 16) in the initial position, and when the second clamping jaw (b 22) pulls materials, the ear belt or the head belt is pulled away from the storage mechanism (b 1), and the position of the lifting winding wheel (b 12) rises; when the sensor (b 16) detects that the lifting winding wheel (b 12) ascends and leaves, the feedback signal starts the driving mechanism (b 14) to discharge the ear belt or the head belt, so that the lifting winding wheel (b 12) descends to the sensor (b 16).

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