CN112537039B

CN112537039B - Ear belt welding device and mask manufacturing equipment

Info

Publication number: CN112537039B
Application number: CN202011293240.7A
Authority: CN
Inventors: 谭治铭; 谭治良; 梁杰
Original assignee: Guangzhou Lianrou Machinery and Equipment Co Ltd
Current assignee: Guangzhou Lianrou Machinery and Equipment Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2022-09-20
Anticipated expiration: 2040-11-18
Also published as: CN112537039A

Abstract

The invention discloses an ear band welding device and mask manufacturing equipment, wherein the ear band welding device comprises a first welding module, a second welding module and a cutting assembly, and the first welding module comprises a first clamping assembly, a first driving assembly and a first welding assembly; the second welding module includes a second clamping assembly and a second welding assembly. The ear band welding device is used for clamping one ends of two mutually spaced ear bands through the first clamping assembly, pulling the two ear bands to move to the positions above the adjacent short edges of two adjacent continuous mask bodies, clamping the other ends of the two ear bands through the second clamping assembly, fixing the ear bands, conveying the ear bands to be in place, welding and fixing the ear bands on the mask bodies through the welding assembly, and subsequently cutting the mask bodies to obtain mask finished products.

Description

Ear band welding device and mask manufacturing equipment

Technical Field

The invention relates to the technical field of mask production and manufacturing, in particular to an ear band welding device and mask manufacturing equipment.

Background

The mask structure comprises a mask body and two ear belts, wherein each ear belt is provided with two ends, and the two ends of each ear belt are fixed on the short edges of the mask body through welding. Among the correlation technique, the gauze mask machine adopts "one to drag two" structural style to arrange, and the gauze mask body forms through a gauze mask body manufacturing installation on upper reaches promptly, then sets up two gauze mask ear area welding set respectively in the low reaches and carries out the welding operation in gauze mask both sides ear area, still is provided with the gauze mask transfer chain between gauze mask body manufacturing installation and two gauze mask ear area welding set. The one-driving-two mask machine has the following problems:

1. the mask body is formed and cut, and the cut mask body is welded with the ear bands, namely the forming of the mask body and the welding of the ear bands are two different processes in sequence, and the mask manufactured by the process mode has poor consistency and affects the quality of the mask;

2. the device is in a slender assembly line layout, and the layout is complicated and is inconvenient for assembly and remote transportation;

3. the production process is complex and needs to be cut for many times;

4. when the ear belt is welded, the welding head of the ear belt is unstable, so that the welding is not firm or the welding surface is incomplete, and the qualification rate of the finished mask product is reduced;

5. the production line is long, the mask production efficiency is not high, and the market demand cannot be met.

Disclosure of Invention

The present invention is directed to solve at least one of the problems of the prior art, and to provide an ear band welding device and mask manufacturing equipment, which can improve the production efficiency.

According to an embodiment of the first aspect of the present invention, there is provided an ear band welding device, including:

the first welding module comprises a first clamping assembly, a first driving assembly and a first welding assembly, wherein the first clamping assembly is used for clamping one ends of two mutually spaced ear belts at the same time, the first driving assembly is used for driving the first clamping assembly to horizontally move so as to pull the two ear belts to move to be above the adjacent short sides of two adjacent and continuous mask bodies, and the first welding assembly is used for welding one ends of the two ear belts;

the second welding module comprises a second clamping assembly and a second welding assembly, wherein the second clamping assembly is used for clamping the other ends of the two ear belts simultaneously, and the second welding assembly is used for welding the other ends of the two ear belts; and

and the cutting component is used for cutting off the ear belt.

The ear band welding device at least has the following beneficial effects: through the one end in two ear areas of first centre gripping subassembly centre gripping alternate, two ear areas of pulling move to the adjacent minor face top of two adjacent continuous gauze mask bodies, the other end in two ear areas of rethread second centre gripping subassembly centre gripping, thereby it is fixed with the ear area, the ear area is carried and is taken one's place, through first welding assembly and second welding assembly with two ear areas while welded fastening on the gauze mask body, follow-up gauze mask body that cuts can obtain the gauze mask finished product, need not set up two ear area welding set in the low reaches of production line, avoid adopting the form of "one drags two" promptly, simplify the production line, improve gauze mask production efficiency.

According to the ear strap welding device provided by the embodiment of the first aspect of the invention, the first clamping component comprises a first limiting block and two first clamping blocks which are opposite at intervals, the first limiting block is arranged between the two first clamping blocks, and the two first clamping blocks can move towards each other to clamp one ends of the two ear straps on two sides of the first limiting block.

According to the ear strap welding device provided by the embodiment of the first aspect of the invention, the second clamping component comprises a second limiting block and two second clamping blocks which are opposite at intervals, the second limiting block is arranged between the two second clamping blocks, and the two second clamping blocks can move oppositely to clamp the other ends of the two ear straps on two sides of the second limiting block.

The ear band welding device according to the embodiment of the first aspect of the invention further comprises a welding die head, the first welding assembly comprises a first welding knife, the second welding assembly comprises a second welding knife, and the first welding knife and the second welding knife are respectively matched with the welding die head to perform welding.

According to the ear strap welding device provided by the embodiment of the first aspect of the invention, the first welding knife and/or the second welding knife comprise a first welding head and a second welding head which are opposite at intervals, and are used for simultaneously welding and fixing two ear straps on the mask body.

According to the ear strap welding device provided by the embodiment of the first aspect of the invention, the first clamping component, the first welding component, the second clamping component and the second welding component form one welding unit, and the ear strap welding device comprises at least two welding units which are distributed at intervals.

According to the ear belt welding device, the first lifting driving component is used for driving the first clamping component to move up and down.

According to the ear belt welding device provided by the embodiment of the first aspect of the invention, the ear belt welding device further comprises a second lifting driving component, and the second lifting driving component is used for driving the second clamping component to move up and down so as to avoid the movement of the first clamping component in the horizontal direction.

The ear band welding device according to the embodiment of the first aspect of the present invention further comprises an ear band shaping component for pulling the ear band to form the ear band into an arc shape.

According to the ear strap welding device provided by the embodiment of the first aspect of the invention, the ear strap shaping assembly comprises a first pull rod, a second pull rod and a second driving assembly, and the second driving assembly is used for driving the first pull rod and the second pull rod to move in opposite directions so as to pull the two ear straps in opposite directions, so that the two ear straps respectively form an arc shape.

According to the ear band welding device of the embodiment of the first aspect of the present invention, the second driving assembly comprises a transmission belt and a transmission wheel in transmission connection with the transmission belt, the transmission belt is oppositely provided with a first belt part and a second belt part by passing through the transmission wheel, the first pull rod is fixedly connected with the first belt part, and the second pull rod is fixedly connected with the second belt part.

According to the ear band welding device provided by the embodiment of the first aspect of the invention, the ear band welding device further comprises a thread end fixing assembly, the thread end fixing assembly comprises a thread end support and a fixing mechanism, a through hole for the ear band to pass through is formed in the thread end support, and the fixing mechanism is used for fixing the ear band.

According to the ear belt welding device provided by the embodiment of the first aspect of the invention, the thread end fixing assembly further comprises a third lifting driving assembly, and the third lifting driving assembly is used for driving the thread end support to move up and down.

According to the ear strip welding device provided by the embodiment of the first aspect of the invention, the cut-off component comprises a heating wire and a fourth lifting driving component, the heating wire is used for fusing the ear strip, and the fourth lifting driving component is used for driving the heating wire to move up and down.

According to an embodiment of a second aspect of the present invention, there is provided a mask manufacturing apparatus, comprising a feeding device, a mask cutting device, and the above ear band welding device, wherein the ear band welding device is arranged before the mask cutting device.

The mask manufacturing equipment at least has the following beneficial effects: mask production line has been simplified to the gauze mask manufacture equipment who contains above-mentioned ear area welding set, improves gauze mask production efficiency.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic view of an ear strap welding device according to an embodiment of the present invention;

FIG. 2 is a side view of an ear strap welding device in a first state in accordance with an embodiment of the present invention;

FIG. 3 is a side view of an ear strap welding apparatus in a second state in accordance with an embodiment of the present invention;

FIG. 4 is a front view of an ear strap welding apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first welding module in accordance with an embodiment of the present invention;

FIG. 6 is an enlarged schematic view of portion A of FIG. 5;

FIG. 7 is a schematic structural diagram of a second welding module in accordance with an embodiment of the present invention;

FIG. 8 is a schematic structural view of a thread end fixing component and a cut-off component according to an embodiment of the invention;

FIG. 9 is a top view of an ear band shaping assembly according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of an ear band shaping assembly in accordance with an embodiment of the present invention;

FIG. 11 is a simplified schematic diagram of a first clamping assembly clamping an ear band in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of the embodiment of the present invention pulling two ear straps to move over the adjacent short sides of two adjacent mask bodies;

FIG. 13 is a simplified schematic illustration of an ear band shaping assembly for shaping an ear band in accordance with an embodiment of the present invention;

FIG. 14 is a schematic view of a completed weld of an ear strap in accordance with an embodiment of the present invention;

fig. 15 is a schematic structural view of a mask manufacturing apparatus according to an embodiment of the present invention;

reference numerals: the first clamping assembly 110, the first limiting block 111, the first clamping block 112, the first cylinder 113, the first driving assembly 120, the gear set 121, the rack 122, the first welding assembly 130, the first welding knife 131, the first welding head 1311, the second welding head 1312, the second cylinder 132, the connecting rod 133, the first mounting plate 140, the first lifting driving assembly 150, the first eccentric transmission unit 151, the first connecting rod 152, the second clamping assembly 210, the second limiting block 211, the second clamping block 212, the third cylinder 213, the second welding assembly 220, the second welding knife 221, the fourth cylinder 222, the second mounting plate 230, the second lifting driving assembly 240, the second eccentric transmission unit 241, the second connecting rod 242, the welding unit 300, the top plate 410, the bottom plate 420, the supporting seat 430, the guide rod 440, the guide rail 450, the slider 460, the welding die head 500, the clearance groove 501, the wire head fixing assembly 600, the wire head bracket 610, the third lifting driving assembly 620, the second eccentric transmission unit 240, the top plate 410, the bottom plate 420, the supporting seat 430, the guide rod 420, the guide rail 450, the slider 460, the welding die head 501, and the clearance groove 501, The cutting component 700, the heating wire 710, the fourth lifting driving component 720, the electrode support 730, the electrode 740, the ear band shaping component 800, the first pull rod 810, the second pull rod 820, the second driving component 830, the driving belt 831, the first belt portion 8311, the second belt portion 8312, the driving wheel 832, the tooth block 833, the guide groove 834, the feeding device 910, the mask cutting device 920, the ear band welding device 930, the plaiting device 940, the nose bridge strip mounting device 950, the seam welding device 960, the ear band 10, the mask body 20 and the short edge 21.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Referring to fig. 1 to 4, an embodiment of the present invention provides an ear band welding apparatus, including a first welding module, a second welding module, and a cutting assembly 700, where the first welding module includes a first clamping assembly 110, a first driving assembly 120, and a first welding assembly 130, the first clamping assembly 110 is configured to simultaneously clamp one end of two ear bands spaced from each other, the first driving assembly 120 is configured to drive the first clamping assembly 110 to horizontally move so as to pull the two ear bands to move above adjacent short sides of two adjacent continuous mask bodies, and the first welding assembly 130 is configured to weld one end of the two ear bands; the second welding module comprises a second clamping assembly 210 and a second welding assembly 220, the second clamping assembly 210 is used for clamping the other ends of the two ear belts simultaneously, and the second welding assembly 220 is used for welding the other ends of the two ear belts; the truncating assembly 700 is for truncating an ear band.

Here, the adjacent continuous means that the mask body is a mask body cloth which is not cut yet. Referring to fig. 11 to 14, each mask body 20 is divided by a dotted line (not cut), which is the position of the short side 21 of the mask body 20, and the adjacent short sides 21 of two adjacent mask bodies 20 are overlapped because they are not cut.

The ear strap welding set of this embodiment, the one end of two ear straps that are parallel to each other through first centre gripping subassembly 110 centre gripping interval, two ear straps of pulling move to the adjacent minor face top of two adjacent continuous gauze mask bodies, make the ear strap be fixed shape through moulding subassembly pulling ear strap in ear strap, the other end of two ear straps of rethread second centre gripping subassembly 210 centre gripping, thereby it is fixed with the ear strap, the ear strap is carried and is taken one's place, cut the ear strap through cutting subassembly 700, and with ear strap welded fastening on the gauze mask body through the welding subassembly, follow-up cutting gauze mask body can obtain the gauze mask finished product, need not set up two ear strap welding set in the low reaches of production line, avoid adopting the form that "one drags two" promptly, simplify the production line, improve gauze mask production efficiency. Two ear areas are welded and fixed simultaneously, improve ear area welding efficiency.

In some embodiments, the first clamping assembly 110, the first welding assembly 130, the second clamping assembly 210 and the second welding assembly 220 form a welding unit 300, and the ear band welding device includes at least two welding units 300 spaced apart from each other along the conveying direction of the mask body. The ear band welding device in this embodiment includes two welding unit 300, first centre gripping subassembly 110, first welding subassembly 130, second centre gripping subassembly 210 and second welding subassembly 220 have two respectively, every welding unit 300 can carry simultaneously and weld two ear bands, thereby four ear bands can be carried simultaneously and welded to the device, can only compare two ear bands welded fastening on the both sides short side of a gauze mask body (the discontinuous gauze mask body that has cut) with welding in traditional gauze mask production, improve production efficiency greatly, refer to fig. 4 and fig. 15.

Referring to fig. 1, in the present embodiment, the ear band welding apparatus further includes a top plate 410, a bottom plate 420, and a support base 430, a first mounting plate 140, and a second mounting plate 230, which are disposed between the top plate 410 and the bottom plate 420, wherein the first clamping assembly 110 and the first welding assembly 130 of the first welding module are fixed on the first mounting plate 140, and the second welding module is fixed on the second mounting plate 230. The first mounting plate 140 is slidably connected to the supporting base 430, a guide rail 450 is disposed at the bottom of the supporting base 430, a slider 460 capable of sliding along the guide rail 450 is disposed on the first mounting plate 140, and the first driving assembly 120 drives the first mounting plate 140 to move along the sliding rail, so as to drive the first clamping assembly 110 to move.

It is understood that the first driving assembly 120 drives the first mounting plate 140 to move, which may adopt different structures, such as a lead screw nut transmission mechanism, a rack and pinion transmission mechanism, or a cylinder assembly. Referring to fig. 5, in the present embodiment, the first driving assembly 120 adopts a rack-and-pinion transmission mechanism, and specifically includes a gear set 121 and a rack 122, wherein one end of the rack 122 is fixedly connected to the first mounting plate 140, the gear set 121 is mounted at the bottom of the supporting seat 430, the motor directly or indirectly drives the gear set 121 to rotate, and the gear set 121 is engaged with the rack 122, so as to drive the rack 122 to reciprocate, and further drive the first mounting plate 140 and the first clamping assembly 110 to move. A matched supporting guide wheel set is installed below the rack 122 and used for guiding the rack 122 to move back and forth.

Referring to fig. 5 and 6, in the present embodiment, the first clamping assembly 110 includes a first stopper 111 and two first clamping blocks 112 spaced and opposite to each other, the first stopper 111 is disposed between the two first clamping blocks 112 and fixed to the bottom of the first mounting plate 140, and the two first clamping blocks 112 are movable towards each other to clamp one end of the two ear straps on two sides of the first stopper 111. Two ear belts contact and attach when avoiding two ear belts of first centre gripping subassembly 110 centre gripping through setting up first stopper 111, make and form predetermined interval between two ear belts, keep parallel accurate removal to the adjacent minor face top of two adjacent gauze mask bodies. The first clamping assembly 110 has two parts, and can simultaneously clamp four ear belts to move.

Specifically, two first clamping blocks 112 are driven to move oppositely to clamp the ear straps, two first cylinders 113 are adopted and fixed at the bottom of the first mounting plate 140, and the first cylinders 113 perform telescopic action to drive the first clamping blocks 112 to move.

In this embodiment, the ear band welding device further includes a welding die head 500, the first welding assembly 130 includes a first welding knife 131, the first welding knife 131 is welded with the welding die head 500 in a matching manner, a space for the first welding knife 131 to move up and down for welding is formed between the two first clamping blocks 112, the structure is compact, and the mask body is conveyed between the first clamping assembly 110 and the welding die head 500.

In some embodiments, the first welding blade 131 is a double-blade structure, and includes a first welding head 1311 and a second welding head 1312 spaced and facing each other for simultaneously welding and fixing one end of the two ear straps to the mask body.

Specifically, first welding sword 131 has two, but the one end of four ear areas of welded fastening simultaneously, and first welding subassembly 130 still includes the second cylinder 132 that drives first welding sword 131 up-and-down motion, and second cylinder 132 has two, is connected with connecting rod 133 between the telescopic link of two second cylinders 132, and first welding sword 131 is fixed in the connecting rod 133 bottom, and the flexible drive connecting rod 133 of second cylinder 132 and first welding sword 131 up-and-down motion.

It will be appreciated that the first clamping assembly 110 and the first welding assembly 130 of the first welding module are secured to the first mounting plate 140, and that the second cylinder 132 is only fixedly secured to the first mounting plate 140.

In this embodiment, the ear band welding device further comprises a first lifting driving assembly 150, and the first lifting driving assembly 150 is used for driving the first clamping assembly 110 to move up and down. Specifically, the first lifting driving assembly 150 drives the supporting seat 430 to move up and down, and then drives the first mounting plate 140, the first clamping assembly 110 and the first welding assembly 130 to move up and down, the first lifting driving assembly 150 includes a first eccentric transmission unit 151 and a first connecting rod 152, the first eccentric transmission unit 151 is fixed on the top plate 410, an output shaft of the first eccentric transmission unit 151 is hinged to one end of the first connecting rod 152, the other end of the first connecting rod 152 is hinged to the supporting seat 430, the output shaft of the first eccentric transmission unit 151 rotates, the supporting seat 430 is driven to move up and down through the first connecting rod 152, a plurality of vertically arranged guide rods 440 are arranged between the top plate 410 and the bottom plate 420, and the supporting seat 430 is slidably connected with the guide rods 440.

It is understood that the first lifting driving assembly 150 may also adopt other structures, such as a linear reciprocating mechanism, for example, a rack and pinion transmission mechanism or a lead screw nut transmission mechanism, as long as it can drive the first clamping assembly 110 to move up and down.

Referring to fig. 7, in the present embodiment, the second clamping assembly 210 includes a second stopper 211 and two second clamping blocks 212 opposite to each other at a distance, the second stopper 211 is disposed between the two second clamping blocks 212 and fixed to the bottom of the second mounting plate 230, and the two second clamping blocks 212 are movable toward each other to clamp the other ends of the two ear straps on two sides of the second stopper 211. After the first clamping assembly 110 clamps one end of the two ear straps and drives the two ear straps to move in place, the second clamping assembly 210 acts to clamp the other end of the two ear straps to fix the ear straps, thereby facilitating subsequent ear strap welding. Likewise, the second stopper 211 can maintain a predetermined spacing between the two ear straps. The second clamping assembly 210 has two parts and can simultaneously clamp four ear straps.

Specifically, the two second clamping blocks 212 are driven to move the clamping ear bands oppositely, and a third air cylinder 213 can be adopted, wherein the third air cylinder 213 is a clamping air cylinder and is fixed at the bottom of the second mounting plate 230.

It will be appreciated that the second weld module is secured to the second mounting plate 230 and is limited to the third cylinder 213 being secured to the second mounting plate 230.

In some embodiments, the second welding assembly 220 includes a second welding blade 221 and a fourth cylinder 222, the second welding blade 221 cooperates with the welding die 500 to perform welding, the fourth cylinder 222 drives the second welding blade 221 to move up and down, and the fourth cylinder 222 is fixed on the second mounting plate 230. Similarly, the second welding blade 221 includes a first welding head and a second welding head spaced apart and opposing each other, and can simultaneously weld the other ends of the two ear straps. The second welding blades 221 are two, and can weld and fix the other ends of the four ear straps to the mask body at the same time.

The welding die head 500 has a certain length, and the first welding knife 131 and the second welding knife 221 are respectively matched with the welding die head 500 to perform welding, so that two ends of the ear band can be welded on the mask body at the same time. Correspondingly, there are two welding dies 500. In this embodiment, ultrasonic welding is specifically adopted for the cooperative welding of the first welding blade 131 and the second welding blade 221 with the welding die head 500.

In some embodiments, the ear strap welding device further comprises a second lifting/lowering driving assembly 240, wherein the second lifting/lowering driving assembly 240 is configured to drive the second clamping assembly 210 to move up and down to avoid the movement of the first clamping assembly 110 in the horizontal direction. Specifically, the second lifting driving assembly 240 drives the second mounting plate 230 to move up and down, and further drives the second clamping assembly 210 and the second welding assembly 220 to move up and down, the second lifting driving assembly 240 includes a second eccentric transmission unit 241 and a second connecting rod 242, the second eccentric transmission unit 241 is fixed on the top plate 410, an output shaft of the second eccentric transmission unit 241 is hinged to one end of the second connecting rod 242, the other end of the second connecting rod 242 is hinged to the second mounting plate 230, the output shaft of the second eccentric transmission unit 241 rotates, the second mounting plate 230 is driven to move up and down by the second connecting rod 242, and the second mounting plate 230 is slidably connected to the guide rod 440. The supporting base 430 is provided with a notch for avoiding the lifting movement of the second mounting plate 230.

It is understood that the second lifting driving assembly 240 may also adopt other structures, such as a rack and pinion transmission mechanism or a linear reciprocating mechanism such as a screw nut transmission mechanism, as long as it can drive the second clamping assembly 210 to move up and down.

Referring to fig. 8, in the present embodiment, the ear band welding apparatus further includes a thread end fixing assembly 600, the thread end fixing assembly 600 includes a thread end support 610 and a fixing mechanism, a through hole for the ear band 10 to pass through is formed on the thread end support 610, and the fixing mechanism is used for fixing the ear band 10. The thread end fixing member 600 serves to fix the thread end position of the ear band 10, and the through hole serves as a guide for the first clamping member 110 to clamp the thread end portion of the ear band 10 and to pull the ear band 10 to move. The fixing mechanism is used for fixing the ear belt 10 before the ear belt 10 is cut off, so that the ear belt 10 keeps the current length and the ear belt is prevented from being elongated. Specifically, the fixing mechanism may be a push rod, a hole for installing the push rod is formed in the inner wall of the through hole of the wire holder 610, and the push rod can be retracted to push or release the ear band. Of course, it is understood that the fixing mechanism may also adopt other structures, for example, fixing the ear strap by clamping, as long as the fixing of the ear strap can be realized to avoid the ear strap falling off.

In some embodiments, the thread end fixing assembly 600 further comprises a third elevating driving assembly 620, and the third elevating driving assembly 620 is used for driving the thread end support 610 to move up and down. Specifically, the third lifting driving assembly 620 includes a fifth cylinder, and an expansion rod of the fifth cylinder is fixedly connected to the thread end support 610.

Referring to fig. 8, in some embodiments, the intercepting member 700 includes a heating wire 710 for fusing the ear band, and a fourth elevating driving member 720 for driving the heating wire 710 to move up and down. Specifically, the fourth lifting driving assembly 720 comprises a sixth air cylinder, an electrode support 730 is fixedly connected to an expansion rod of the sixth air cylinder, an electrode 740 used for heating is installed on the electrode support 730, the heating wire 710 is connected with the electrode 740, the ear band is cut off in a fusing mode, the electrode 740 is electrified, and the heating wire 710 is heated to a temperature higher than 300 ℃. Of course, it is to be understood that the severing assembly 700 may sever the ear band by cutting or shearing, etc.

Referring to fig. 2, 3, 9 and 10, in the present embodiment, the ear band welding device further includes an ear band shaping component 800, and the ear band shaping component 800 is used for further lengthening the length of the ear band for wearing. In some embodiments, the ear band shaping assembly 800 includes a first pull rod 810, a second pull rod 820 and a second driving assembly 830, the first pull rod 810 and the second pull rod 820 are between the two ear bands 10, the second driving assembly 830 is configured to drive the first pull rod 810 and the second pull rod 820 to move in opposite directions so as to pull the two ear bands 10 in opposite directions, and after the welding is completed, the two ear bands 10 of the pull rod reset are both distributed on the mask body in an arc shape.

Specifically, the second driving assembly 830 includes a driving belt 831 and a driving wheel 832 in driving connection with the driving belt 831, the driving belt 831 is provided with a first belt portion 8311 and a second belt portion 8312 at intervals and oppositely around the driving wheel 832, the driving wheel 832 rotates to drive the first belt portion 8311 and the second belt portion 8312 to move in opposite directions, the first pull rod 810 is fixedly connected with the first belt portion 8311, the second pull rod 820 is fixedly connected with the second belt portion 8312, so that the first pull rod 810 and the second pull rod 820 move in opposite directions, and the eared back eared band is on the inner side of the mask body. The transmission belt 831 may be a toothed belt, the transmission wheels 832 are pulleys, and two ends of the toothed belt are respectively provided with one transmission wheel 832, wherein one transmission wheel 832 is used as a driving wheel, the other transmission wheel 832 is used as a driven wheel, the first pull rod 810 and the second pull rod 820 are respectively and fixedly connected with a toothed block 833, and the toothed block 833 is meshed with the transmission belt 831. In order to ensure the accurate moving direction of the first pull rod 810 and the second pull rod 820, guide rails are provided, the guide rails and the first mounting plate 140 are of an integral structure, guide grooves 834 are provided on the guide rails, and the first pull rod 810 and the second pull rod 820 are respectively connected with the corresponding guide grooves 834 in a sliding manner. The first pull rod 810 and the second pull rod 820 are respectively provided with two pull rods, and four ear belts can be shaped simultaneously. The welding die head 500 is provided with a clearance groove 501 for avoiding interference with the first pull rod 810 and the second pull rod 820.

The overall working process of the ear strap welding device of the embodiment is as follows:

s100, enabling four ear belts to penetrate through a through hole in the thread end support 610, and reserving a thread end with a certain length;

s200, referring to fig. 2, 4 and 11, the first driving assembly 120 drives the first mounting plate 140 and the first clamping assembly 110 to move horizontally to the front of the thread end fixing assembly 600, the first clamping assembly 110 clamps the thread end (i.e. one end of the ear belt) of the ear belt 10, and at this time, the second clamping assembly 210 is directly above the first clamping assembly 110, so as to avoid interference with the movement of the first clamping assembly 110, i.e. the two clamping assemblies are on the same vertical plane;

s300, referring to fig. 12, the first driving assembly 120 drives the first mounting plate 140 and the first clamping assembly 110 to move forward, and pulls the two ear straps 10 to float and move above the adjacent short sides 21 of the two adjacent mask bodies 20;

s400, referring to fig. 9 and 13, the ear band shaping assembly 800 is actuated, and the second driving assembly 830 drives the first pull rod 810 and the second pull rod 820 to move in opposite directions, so as to pull the ear band 10 to form an arc shape;

s500, fixing an ear strap by a fixing mechanism of the wire end fixing assembly 600 to avoid the change of the length of the ear strap, driving the first clamping assembly 110 to descend by the first lifting driving assembly 150, driving the wire end support 610 to descend by the third lifting driving assembly 620, enabling the ear strap to descend to be close to the mask body or the welding die head 500 as far as possible, and enabling a 2-5mm gap to be formed between the bottom surface of the first clamping block 112 and the upper surface of the welding die head 500 to facilitate subsequent ear strap welding;

s600, referring to fig. 3, the second lifting driving assembly 240 drives the second clamping assembly 210 to descend to a position having the same height as the first clamping assembly 110, at this time, the first clamping assembly 110 and the second clamping assembly 210 are on the same horizontal plane, and the second clamping assembly 210 clamps the other end of the ear band 10;

s700, the fourth lifting driving component 720 of the truncation component 700 drives the heating wire 710 to lift to fuse the ear belt, and at the moment, the fixing mechanism fixes the ear belt and can prevent the ear belt from falling off;

s800, the first welding knife 131 and the second welding knife 221 descend simultaneously to cooperate with the welding die head 500 to weld the two ends of the ear band 10 on the mask body 20, thereby completing the welding of the ear band 10, as shown in fig. 14.

Referring to fig. 15, an embodiment of the present invention further provides a mask manufacturing apparatus, including a feeding device 910, a mask cutting device 920, and the ear band welding device 930, where the feeding device 910 conveys multiple layers of mask body cloth, the ear band welding device 930 is disposed in front of the mask cutting device 920, and the mask cutting device 920 cuts the mask body to obtain a mask finished product, so that two ear band welding devices do not need to be disposed at the downstream of the production line, i.e., a "one-to-two" form is avoided, the production line is simplified, the mask production efficiency is improved, and the mask body is formed and the ear bands are welded at the same time, so that the mask consistency is improved, and the ear band welding quality and the mask production quality are ensured.

In this embodiment, the mask manufacturing apparatus further includes a plaiting device 940, a nose bridge strip mounting device 950, a seam welding device 960, and the like, which are sequentially disposed along the mask body conveying direction, and the ear band welding device 930 is disposed after the seam welding device 960.

It is understood that the feeding device 910, the plaiting device 940, the nose bridge strip installation device 950, the seam welding device 960, the mask cutting device 920, and the like are all in the prior art, and the specific structures thereof are not described herein again.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. Ear strap welding set, its characterized in that includes:

the first welding module comprises a first clamping assembly, a first driving assembly and a first welding assembly, wherein the first clamping assembly is used for clamping one end of two mutually spaced ear belts at the same time, the first driving assembly is used for driving the first clamping assembly to horizontally move so as to pull the two ear belts to move to the positions above the adjacent short edges of two adjacent and continuous mask bodies, the first welding assembly is used for welding one end of the two ear belts, and the adjacent and continuous mask bodies are mask body cloth which is not cut;

a cutting assembly for cutting the ear band;

first centre gripping subassembly includes first stopper and two first clamp splices that the interval is relative, first stopper sets up two between the first clamp splice, two first clamp splice can move in opposite directions and be used for the one end centre gripping of two ear areas to be in the both sides of first stopper avoid two ear areas contact the laminating during two ear areas of first centre gripping subassembly centre gripping makes and forms predetermined interval between two ear areas, keeps parallel movement to the adjacent minor face top of two adjacent gauze mask bodies.

2. The ear band welding device according to claim 1, characterized in that: the second clamping assembly comprises a second limiting block and two second clamping blocks opposite to each other at intervals, the second limiting block is arranged between the two second clamping blocks, and the second clamping blocks can move oppositely to clamp the other ends of the two ear belts at two sides of the second limiting block.

3. The ear band welding device according to claim 1, characterized in that: the ear belt welding device further comprises a welding die head, the first welding assembly comprises a first welding knife, the second welding assembly comprises a second welding knife, and the first welding knife and the second welding knife are respectively matched with the welding die head to perform welding.

4. The ear band welding device according to claim 3, characterized in that: the first welding knife and/or the second welding knife comprise a first welding head and a second welding head which are opposite at intervals and are used for simultaneously welding and fixing two ear belts on the mask body.

5. The ear band welding device according to any one of claims 1 to 4, characterized in that: the first clamping assembly, the first welding assembly, the second clamping assembly and the second welding assembly form a welding unit, and the ear strap welding device comprises at least two welding units which are distributed at intervals.

6. The ear band welding device according to claim 1, characterized in that: the ear belt welding device further comprises a first lifting driving assembly, and the first lifting driving assembly is used for driving the first clamping assembly to move up and down.

7. The ear band welding device according to claim 1, characterized in that: the ear belt welding device further comprises a second lifting driving assembly, and the second lifting driving assembly is used for driving the second clamping assembly to move in a lifting mode so as to avoid the movement of the first clamping assembly in the horizontal direction.

8. The ear band welding device according to any one of claims 1 to 4, characterized in that: the ear band welding device further comprises an ear band shaping component, and the ear band shaping component is used for pulling the ear band to enable the ear band to form an arc shape.

9. The ear band welding device according to claim 8, characterized in that: moulding subassembly of ear area includes first pull rod, second pull rod and second drive assembly, second drive assembly is used for the drive first pull rod with second pull rod antiport to two ear areas of antiport make two ear areas form the arc respectively.

10. The ear band welding device according to claim 9, characterized in that: the second driving assembly comprises a transmission belt and a transmission wheel in transmission connection with the transmission belt, the transmission belt is provided with a first belt part and a second belt part in a manner of bypassing the transmission wheel, the first pull rod is fixedly connected with the first belt part, and the second pull rod is fixedly connected with the second belt part.

11. The ear band welding device according to claim 1 or 6, characterized in that: ear area welding set still includes the fixed subassembly of end of a thread, the fixed subassembly of end of a thread includes end of a thread support and fixed establishment, be equipped with the through-hole that is used for supplying the ear area to pass on the end of a thread support, fixed establishment is used for fixed ear area.

12. The ear band welding device according to claim 11, characterized in that: the thread end fixing assembly further comprises a third lifting driving assembly, and the third lifting driving assembly is used for driving the thread end support to move in a lifting mode.

13. The ear band welding device according to claim 1, characterized in that: the cutting-off assembly comprises a heating wire and a fourth lifting driving assembly, the heating wire is used for fusing the ear belt, and the fourth lifting driving assembly is used for driving the heating wire to move up and down.

14. Mask manufacture equipment, its characterized in that: comprising a feeding device, a mask cutting device and an ear band welding device according to any one of claims 1 to 13, said ear band welding device being arranged before said mask cutting device.