CN111438947B - High-speed ear belt machine - Google Patents

High-speed ear belt machine Download PDF

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Publication number
CN111438947B
CN111438947B CN202010268212.3A CN202010268212A CN111438947B CN 111438947 B CN111438947 B CN 111438947B CN 202010268212 A CN202010268212 A CN 202010268212A CN 111438947 B CN111438947 B CN 111438947B
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China
Prior art keywords
station
wire
ear
seat
winding
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CN202010268212.3A
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Chinese (zh)
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CN111438947A (en
Inventor
李永付
李峥博
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Shaoxing Hengyan Electromechanical Technology Co ltd
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Shaoxing Hengyan Electromechanical Technology Co ltd
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Publication of CN111438947A publication Critical patent/CN111438947A/en
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Publication of CN111438947B publication Critical patent/CN111438947B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02241—Cutting, e.g. by using waterjets, or sawing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Textile Engineering (AREA)
  • Wire Processing (AREA)

Abstract

The invention relates to the field of mask manufacturing, in particular to a high-speed ear belt machine which comprises a rotatable base and a plurality of wire pulling units arranged on the base, wherein in the circulating rotation process of the wire pulling units, each wire pulling unit at least passes through a winding station, a clamping station, a cutting station and a pressure welding station; the winding station is provided with a wire supply unit, and the lug ropes are continuously wound on the wire pulling unit in a curve shape at the winding station; the clamping station clamps and fixes the winding lug rope on the wire drawing unit; a cutting station, cutting the curved ear rope fixed on the wire pulling unit into an ear belt and keeping the ear belt clamped; and the pressure welding station is used for pressure welding the ear belt on the mask. After adopting above-mentioned scheme, through creative design, very big improvement the pressure welding efficiency of gauze mask ear area.

Description

High-speed ear belt machine
Technical Field
The invention relates to the field of mask manufacturing, in particular to a high-speed ear belt machine.
Background
When the large-scale epidemic situation outbreak occurs, no matter healthy people or infected people wear the mask in order to prevent cross infection, and the daily consumption of the mask is huge due to the large number of people in China, so the production efficiency of the mask is very important.
During the gauze mask is in production, need two ear areas of pressure welding in face guard both sides, in current gauze mask production, ear area pressure welding device sets up at face guard conveyer belt side, and the pressure welding of ear area generally includes following step: the ear rope as the ear belt is pulled beside the conveying belt, is clamped left and right through the two gas claws, is cut off by the cutter mechanism to form the ear belt which accords with the standard size, and then the two gas claws are controlled to rotate towards the conveying belt to enable the ear belt to be in a U-shaped structure, and then the ear belt is pressure-welded on the side edge of the face mask through the two pressure-welding devices.
Namely, after a face mask conveying in place, the connection of one side ear area needs four actions such as centre gripping at least, cut off, the bending, pressure welding, on the semi-automatic production line, the pressure welding device only sets up in conveyer belt one side, need artifical manual pressure welding that rotates 180 to carry out both sides to the gauze mask, and if adopt full-automatic pressure welding device, compared in semi-automatic production efficiency that has improved, but the pressure welding device of both sides needs higher synchronous rate, consequently can produce higher fault rate, need professional to debug the system promptly through a period of production time, and even adopt full-automatic production, the gas claw under controller control is when the action, the response time that each step needs still can not change, the production of gauze mask still receives the pressure welding efficiency of ear area.
Therefore, the present inventors have further studied this and developed a high-speed ear belt machine, which is produced by this invention.
Disclosure of Invention
The invention aims to provide a high-speed ear belt machine which greatly improves the pressure welding efficiency of a mask ear belt through creative design.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a high-speed ear belt machine comprises a rotatable base and a plurality of wire pulling units arranged on the base, wherein in the circulating rotation process of the wire pulling units, each wire pulling unit at least passes through a winding station, a clamping station, a cutting station and a pressure welding station;
the winding station is provided with a wire supply unit, and the lug ropes are continuously wound on the wire pulling unit in a curve shape at the winding station;
the clamping station clamps and fixes the winding lug rope on the wire drawing unit;
a cutting station, cutting the curved ear rope fixed on the wire pulling unit into an ear belt and keeping the ear belt clamped;
and the pressure welding station is used for pressure welding the ear belt on the mask and releasing the clamping of the ear belt.
After the scheme is adopted, through the action of the most basic wire drawing unit at different positions, namely when the ear belt is subjected to pressure welding, only pressure welding is required to be carried out on a pressure welding point (namely a pressure welding station) all the time, and the rest bending, fixing and cutting steps are finished at a front-sequence station without waiting for the response of other steps at the same station.
Furthermore, the wire supply unit pulls the ear rope to do reciprocating linear motion, so that the ear rope is limited by the winding piece of the wire pulling unit to form a curve state in a manner of matching with the movement of the wire pulling unit in the process of swinging back and forth.
The ear ropes pulled by the wire pulling unit sequentially pass through the winding pieces of the wire pulling unit in the linear reciprocating motion process by matching with the circulating rotation of the wire pulling unit to form wave-shaped distribution, so that the ear ropes are conveniently cut in subsequent stations to form bent ear belts; in the prior art, after the ear rope is cut off, the air claws at two sides are controlled to be bent and formed towards the same side; in the scheme, the wire supply unit takes the linear lifting guide rail as a main traction path, the lead wire of the traction lug rope is linked with the main driving mechanism through the connecting rod, the distribution of the lug rope on the winding piece is realized only through purely mechanical linkage, but the wire supply unit in the prior art can also be adopted, the wire supply is realized through electric control, and the synchronism is slightly different from the scheme.
Furthermore, the wire pulling unit comprises at least three wire winding parts, wherein at least two wire winding parts are clamping parts capable of opening and closing to clamp the lug ropes, the clamping parts are positioned on the outer ring of the circulating path of the wire pulling unit, the rest wire winding parts are positioned on the inner ring of the circulating path relatively, and the lug ropes are distributed in a curve shape after passing through each wire winding part.
Because when the ear strap is pressure-welded, two end parts of the ear strap are required to be fixedly connected, at least two clamping pieces are required to fix the ear strap (in the existing design, the clamping of the ear rope is realized by the air claw controlled by the air cylinder), so that the relative distance between two ends of the ear strap is fixed, and the clamping pieces are required to be close to the outer side for convenient pressure welding.
Furthermore, the wire pulling unit comprises a fixed seat and a lifting seat, a lifting guide rail is arranged below the lifting seat, and the lifting seat is lifted relative to the fixed seat through the lifting guide rail; the lifting seat is provided with two movable columns and a fixed column, the movable columns penetrate through the sleeve of the lifting seat, clamping pieces are arranged at the tops of the movable columns, the clamping pieces are matched with the sleeve to clamp the ear ropes, the movable columns are located on the outer ring of the circulating path of the wire pulling unit, and the fixed column is located on the inner ring of the circulating path relatively.
The movable column is matched with the clamping piece to be used as the clamping piece, the mode of clamping the lug rope can be realized through mechanical linkage with the main power source, the clamping of the lug rope by the winding piece and the movement to the pressure welding point are concentrated on the same wire drawing unit, the complexity of the whole structure is simplified, and the synchronism is more reliable.
Further, connect through the connecting block between the activity post, the connecting block sets up in the lift seat below, be provided with the ball between connecting block and the lifting guide, a part of ball is arranged in the recess of connecting block, another part is arranged in lifting guide's hole groove, lifting guide's hole inslot sets up the elastic component, at the in-process that the connecting block atress rises, the ball makes connecting block and lifting guide keep synchronous lift in a section distance, the connecting block rises alone after the lift seat is obstructed, thereby make the clamping piece open for the sleeve.
In the initial stress rising stage of the connecting block, the part of the ball, which is positioned on the connecting block, cannot be separated due to the pressure of the elastic piece on the ball, so that the connecting block drives the lifting guide rail to rise together; when the lifting seat is blocked from rising, the ball retracts into the lifting guide rail under the action of the connecting block, so that the connecting block continues to rise to open the clamping piece; through the design of pure machinery, realize that the clamping piece opens and shuts for the sleeve, replaced the centre gripping of using the gas claw to the ear rope among the prior art.
Furthermore, the side of the lifting guide rail is provided with a sliding seat, the sliding seat is provided with a limiting part, the sliding seat can move horizontally relative to the lifting guide rail, and the limiting part can pull the direction of the two ends of the lug belt when in pressure welding.
The two ends of the cut-off ear belt are opened, and the ear belt is righted through the limiting part to be beneficial to positioning during pressure welding.
Furthermore, a roller is arranged between the sliding seat and the fixed seat, the roller is arranged on the fixed seat or the sliding seat, and the roller rolls on the bevel edge between the sliding seat and the fixed seat to force the sliding seat to translate relative to the lifting guide rail.
The friction between the sliding seat and the fixed seat can be reduced by arranging the roller.
Furthermore, the bases are symmetrically arranged on two sides of the mask conveying belt, and the two bases are driven by a power source to enable the rotation directions of the two bases to be opposite.
The rotation directions of the two bases are opposite through the gear connecting rod mechanism, and the rotation frequencies are synchronous, so that the same mask has synchronism when ear belts on the left side and the right side are welded, and the pressure welding precision is high; in the existing full-automatic pressure welding device, pressure welding at two sides is controlled respectively, response errors can be generated, and debugging is needed after long-term production.
And further, the wire drawing device comprises 6-8 wire drawing units which move circularly, transition stations are arranged among the winding station, the clamping station, the cutting station and the pressure welding station, and the wire drawing units move circularly among the stations.
In consideration of actual production requirements, the size of the ear belt is fixed, so that the space occupied by the wire pulling unit is also larger than the size, the wire pulling unit is set to be 6-8 stations, a plurality of transition stations are reserved among the winding station, the clamping station, the cutting station and the pressure welding station, when mechanical parts are manufactured, more abundant space is reserved in design, transmission parts cannot be influenced mutually, and the pressure welding speed of the ear belt cannot be increased by setting the wire pulling unit in more number, so that the design scheme is most reasonable.
Further, a cutting mechanism is arranged beside the wire pulling unit at the cutting station; and the pressure welding station is used for removing the clamping of the ear belt after the ear belt is pressure welded on the mask.
The cutting mechanism can adopt the means of the prior art, and the ear rope can be cut only by matching with the rotation of the wire pulling unit after the ear rope is clamped and fixed.
After adopting the scheme, compared with the prior art, the invention has the following advantages:
the ear band pressure welding step which is originally completed at the same position is decomposed into a plurality of steps which are distributed on different stations to be completed, so that the production efficiency of the mask is greatly improved; and the circulation of the whole system can be driven by a main power source, so that the response error in full-automatic pressure welding is reduced, and the production efficiency of the mask is also improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the base with a welding gun;
FIG. 3 is a schematic view of the weld gun of FIG. 4 omitted;
FIG. 4 is one of the schematic views of the wire pulling unit;
FIG. 5 is a second schematic view of the wire pulling unit;
FIG. 6 is a third schematic view of the wire pulling unit;
description of the reference symbols
The welding device comprises a fixed seat 11, a lifting seat 12, a sleeve 121, a movable column 13, a clamping piece 131, a fixed column 14, a lifting guide rail 15, a sliding seat 16, a roller 161, a connecting block 17, a ball 18, a limiting piece 19, a wire supply cam 21, a swing rod 22, a wire supply slide rail 23, a cross rod 24, a base 3, an ear rope 4, a top plate 5, a welding gun 6 and a conveyor belt 7.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in the figure, the high-speed ear belt machine comprises 8 wire drawing units which are arranged on a base 3 and move circularly, the wire drawing units pass through a winding station, a clamping station, a cutting station and a pressure welding station when rotating so as to respectively realize different actions during ear belt pressure welding, transition stations which do not perform extra actions can be called among the stations, when mechanical parts are manufactured, the transition stations can leave more abundant design space for processes, transmission parts cannot influence each other, and the wire drawing units which are arranged into more numbers cannot increase the pressure welding speed of the ear belts.
The wire pulling unit comprises a fixed seat 11 and a lifting seat 12, two movable columns 13 and a fixed column 14 are arranged on the lifting seat 12, clamping pieces 131 are arranged at the tops of the movable columns 13, a lifting guide rail 15 is arranged below the lifting seat 12, the movable columns 13 penetrate through a sleeve 121 of the lifting seat 12 and are connected through a connecting block 17, the connecting block 17 is arranged below the lifting seat 12, a ball 18 is arranged between the connecting block 17 and the lifting guide rail 15, one part of the ball 18 is positioned in a groove of the connecting block 17, the other part is positioned in the hole groove of the lifting guide rail 15, an elastic piece is arranged in the hole groove of the lifting guide rail 15, in the process that the connecting block 17 is pushed up by the top plate 5 at the welding gun 6 beside the conveyor belt 7, the balls 18 enable the connecting block 17 to drive the lifting guide rail 15 to keep synchronously lifting within a certain distance, after the lifting base 12 is blocked, the connecting block 17 continues to rise, so that the clamping piece 131 can be opened relative to the sleeve 121.
The clamping piece 131 is matched with the sleeve 121 along with the lifting of the movable column 13, the ear rope 4 can be clamped, the movable column 13 is located on the outer ring of the circulating path of the wire pulling unit, the fixed column 14 is located on the inner ring of the circulating path relatively, two movable columns 13 and one fixed column 14 are distributed in a triangular mode from the angle above the wire pulling unit, and the whole length of the ear rope 4 can be changed by adjusting the fixed column 14.
The side edge of the lifting guide rail 15 is provided with a sliding seat 16, the two sides of the fixed seat 11 are provided with rollers 161, and the rollers 161 can roll along the stepped edge of the side edge of the sliding seat 16, so that the friction force between the fixed seat 11 and the sliding seat 16 is reduced; when the connecting block 17 drives the lifting guide rail 15 to rise, the roller 161 moves on the oblique side of the sliding seat 16 at this time, the sliding seat 16 translates relative to the lifting guide rail 15, so as to drive the limiting part 19 to move outwards, the upper end of the limiting part 19 is the position where the end part of the ear belt is located, and the limiting part 19 can be used for correcting and limiting the end part of the ear belt in the moving process, so that the end part of the ear belt is aligned with the position of the welding gun 6.
The lifting of the movable column 13 can be controlled pneumatically, or a pneumatic claw or the like can be used instead of the movable column 13, but the synchronism between the steps is reduced, and longer response time is required to wait, but the method is still superior to the prior art.
The wire supply unit is arranged at the wire winding station and comprises a swing rod 22 driven by a wire supply cam 21, the swing rod 22 drives a cross rod 24 to move back and forth on a wire supply slide rail 23, the ear ropes 4 input from the outside are pulled by the cross rod 24, and the ear ropes 4 are enabled to pass through a movable column 13 and a fixed column 14 through the movement of the wire drawing unit in the process of swinging back and forth to form a V-shaped distribution state. When the wire pulling unit is positioned at the wire winding station, the clamping piece 131 and the sleeve 121 are in a separated state, at the moment, the ear rope 4 passes through the position between the clamping piece 131 and the sleeve 121 at the movable column 13, and the ear rope 4 is relatively positioned on the inner side of the wire pulling unit so as to be conveniently taken down from the wire pulling unit in the following process.
In a clamping station, the clamping piece 131 is driven to descend by the movable column 13, so that the clamping piece 131 is attached to the sleeve 121, the ear ropes 4 between the clamping piece and the sleeve are clamped, the V-shaped distribution of the ear ropes is fixed, and the ear ropes are cut at a later cutting station through a cutting mechanism arranged beside the wire drawing unit; the cutting mechanism may be by prior art means and is not shown in the figures.
When the wire drawing unit moves to the pressure welding station, namely the welding gun 6 beside the conveyor belt 7, the connecting block 17 drives the lifting seat 12 to ascend relative to the fixed seat 11 under the action of the top plate 5, meanwhile, the sliding seat 16 translates relative to the lifting guide rail 15, so that the limiting part 19 is driven to move outwards to correct the ear belt, after the welding of the welding gun 6 is completed, the clamping piece 131 is separated from the sleeve 121, the lifting seat 12 descends, the ear belt is separated from the wire drawing unit and is transported away by the conveyor belt 7, and the ear belt starts to enter the initial position to perform the next circulation.
The rotation of the base 3, the swinging of the swing rod 22 of the wire supply unit, the lifting of the wire pulling unit and the clamping of the ear rope 4 can be led out from a power source by arranging the linkage among a plurality of cams, gears and connecting rods, or can be independently controlled by arranging a plurality of servo motors and air cylinders, but the invention aims to simplify the transmission mechanism, but is an innovative step-by-step production method provided for ear belt pressure welding.

Claims (5)

1. The utility model provides a high-speed ear tape unit which characterized in that: the wire drawing device comprises a rotatable base and a plurality of wire drawing units arranged on the base, wherein each wire drawing unit at least passes through a winding station, a clamping station, a cutting station and a pressure welding station in the circulating rotation process of the wire drawing units;
the winding station is provided with a wire supply unit, and the lug ropes are continuously wound on the wire pulling unit in a curve shape at the winding station;
the clamping station clamps and fixes the winding lug rope on the wire drawing unit;
a cutting station, cutting the curved ear rope fixed on the wire pulling unit into an ear belt and keeping the ear belt clamped;
a pressure welding station for pressure welding the ear belt on the mask;
the two bases are driven by a power source to enable the rotation directions of the two bases to be opposite;
the wire supply unit pulls the ear rope to do reciprocating linear motion, so that the ear rope is in a curve state by being limited by the winding piece of the wire pulling unit in cooperation with the movement of the wire pulling unit in the process of swinging back and forth;
the wire pulling unit comprises at least three wire winding pieces, wherein at least two wire winding pieces are clamping pieces capable of opening and closing to clamp the lug ropes, the clamping pieces are positioned on the outer ring of the circulating path of the wire pulling unit, the other wire winding pieces are positioned on the inner ring of the circulating path relatively, and the lug ropes are distributed in a curve shape after passing through each wire winding piece;
the wire pulling unit comprises a fixed seat and a lifting seat, a lifting guide rail is arranged below the lifting seat, and the lifting seat is lifted relative to the fixed seat through the lifting guide rail; the lifting seat is provided with two movable columns and a fixed column, the movable columns penetrate through a sleeve of the lifting seat, clamping pieces are arranged at the tops of the movable columns, the clamping pieces are matched with the sleeve to clamp the ear ropes, the movable columns are located on the outer ring of the circulating path of the wire pulling unit, and the fixed column is located on the inner ring of the circulating path relatively; connect through the connecting block between the activity post, the connecting block sets up in the lift seat below, be provided with the ball between connecting block and the lifting guide, a part of ball is arranged in the recess of connecting block, another part is arranged in lifting guide's hole groove, lifting guide's hole inslot sets up the elastic component, at the in-process that the connecting block atress rises, the ball makes connecting block and lifting guide keep synchronous the lift in a section distance, the connecting block rises alone after the lift seat is obstructed to make the clamping piece open for the sleeve.
2. The high-speed ear band machine of claim 1, characterized in that: the side of the lifting guide rail is provided with a sliding seat, the sliding seat is provided with a limiting part, the sliding seat can move horizontally relative to the lifting guide rail, and the limiting part can pull the two ends of the lug belt to point when in pressure welding.
3. A high speed ear band machine according to claim 2, characterized in that: the idler wheel is arranged between the sliding seat and the fixed seat, the idler wheel is arranged on the fixed seat or the sliding seat, and the idler wheel rolls on the bevel edge between the sliding seat and the fixed seat to force the sliding seat to translate relative to the lifting guide rail.
4. The high-speed ear band machine of claim 1, characterized in that: the wire drawing device comprises 6-8 wire drawing units which move circularly, transition stations are arranged among a winding station, a clamping station, a cutting station and a pressure welding station, and the wire drawing units move circularly among the stations.
5. The high-speed ear band machine of claim 1, characterized in that: a cutting mechanism is arranged beside the wire pulling unit at the cutting station; and the pressure welding station is used for removing the clamping of the ear belt after the ear belt is pressure welded on the mask.
CN202010268212.3A 2020-04-08 2020-04-08 High-speed ear belt machine Active CN111438947B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010268212.3A CN111438947B (en) 2020-04-08 2020-04-08 High-speed ear belt machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010268212.3A CN111438947B (en) 2020-04-08 2020-04-08 High-speed ear belt machine

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CN111438947A CN111438947A (en) 2020-07-24
CN111438947B true CN111438947B (en) 2021-11-26

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2472747Y (en) * 2001-03-02 2002-01-23 陈洪和 Improved mask ear wearing machine
US9770058B2 (en) * 2006-07-17 2017-09-26 3M Innovative Properties Company Flat-fold respirator with monocomponent filtration/stiffening monolayer
CN202819719U (en) * 2012-04-20 2013-03-27 仙桃市道琦塑业有限公司 Full-automatic non-edged mouth shad band feeding machine
CN203357892U (en) * 2013-06-28 2013-12-25 东莞市宏祥机械设备有限公司 Ultrasonic respirator ear band welding machine
CN204076819U (en) * 2014-08-28 2015-01-07 东莞市宏祥机械设备有限公司 A kind of arcwall face mouth mask head hanging wire bonding machine

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