CN113276432A - Mask ear belt welding device of mask production line - Google Patents

Mask ear belt welding device of mask production line Download PDF

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Publication number
CN113276432A
CN113276432A CN202110521195.4A CN202110521195A CN113276432A CN 113276432 A CN113276432 A CN 113276432A CN 202110521195 A CN202110521195 A CN 202110521195A CN 113276432 A CN113276432 A CN 113276432A
Authority
CN
China
Prior art keywords
mask
production line
assembly
mounting bracket
welding device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110521195.4A
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Chinese (zh)
Inventor
任涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhangjiagang Zhiyi Medical Health Products Co ltd
Original Assignee
Zhangjiagang Zhiyi Medical Health Products Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhangjiagang Zhiyi Medical Health Products Co ltd filed Critical Zhangjiagang Zhiyi Medical Health Products Co ltd
Priority to CN202110521195.4A priority Critical patent/CN113276432A/en
Publication of CN113276432A publication Critical patent/CN113276432A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means 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
    • B29C65/7858Means 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 characterised by the feeding movement of the parts to be joined
    • B29C65/7861In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41HAPPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00Other methods, machines or appliances
    • A41H43/04Joining garment parts or blanks by gluing or welding ; Gluing presses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/005Detaching the article from the joining tool
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/48Wearing apparel
    • B29L2031/4807Headwear
    • B29L2031/4835Masks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The invention discloses a mask ear belt welding device of a mask production line, which belongs to the field of mask production welding, and comprises a welding assembly and a feeding assembly, wherein the feeding assembly comprises an installation frame, chain wheels are rotatably installed in the middle of the installation frame, two groups of chain wheels are symmetrically installed on the left side and the right side, the two groups of chain wheels are in transmission through chains, a feeding plate is fixedly installed on the surface of each chain, a feeding assembly, a rotating assembly and a first driving assembly are fixedly installed on the front end surface of the installation frame, and the first driving assembly provides power for the chain wheels.

Description

Mask ear belt welding device of mask production line
Technical Field
The invention relates to the field of mask production welding, in particular to a mask ear band welding device of a mask production line.
Background
Traditional gauze mask ear area welding machine all is equipped with manual operation platform, the gauze mask of taking through the workman is manual then stretch into the weld zone territory with the side of gauze mask and weld, need rotate 180 with the gauze mask after the welding, make one side that the gauze mask does not weld the ear area stretch into the weld zone territory and weld, workman manually operation is passed through to whole step, welding speed is very unstable, work efficiency is still very low, and because stretch into the weld zone territory with the gauze mask through the workman is manual, so position during the ear area welding can take place the deviation, will influence wearing of gauze mask when the deviation is great, can't guarantee the whole quality of gauze mask, the practicality is lower. .
Therefore, the invention provides a mask ear band welding device of a mask production line, which aims to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a mask ear band welding device of a mask production line, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a gauze mask ear area welding set of gauze mask production line, includes welding subassembly and pay-off subassembly, the pay-off subassembly includes the installing frame, the middle rotation of installing frame installs the sprocket, the sprocket bilateral symmetry is installed two sets ofly, passes through chain drive between two sets of sprockets, chain fixed surface installs the delivery sheet, the preceding terminal surface fixed mounting of installing frame has feed subassembly, rotating assembly and a drive assembly, a drive assembly provides power for the sprocket.
As a further scheme of the invention: the front side, the left side and the right side fixed mounting of feed plate up end have the bounding wall, and the feed subassembly can give the gauze mask to the up end of feed plate, and the bounding wall can control spacingly to the gauze mask, prevents that the feed plate from taking place the displacement at the in-process gauze mask of action, causes the ear area welding position deviation of gauze mask, influences the quality of gauze mask.
As a still further scheme of the invention: the feed subassembly includes first mounting bracket, the conveyer belt is installed on the middle upper portion of first mounting bracket, the up end fixed mounting of first mounting bracket has the hopper, the discharge gate has been seted up to the rear end face of hopper, the left end face fixed mounting of first mounting bracket has second drive assembly, second drive assembly provides power for the conveyer belt, only needs stack the gauze mask in the hopper, then the conveyer belt will with be in the gauze mask of lower extreme and take place the contact, rotate through the conveyer belt and just can remove the gauze mask towards the delivery sheet, control only a gauze mask at every turn through the high restriction of discharge gate and leave the hopper, realize automatic single pay-off.
As a still further scheme of the invention: the horizontal height of the upper end face of the conveying belt is the same as that of the upper end face of the enclosing plate, so that the mask can be stably moved to the feeding plate from the conveying belt, and the feeding stability of the mask is improved.
As a still further scheme of the invention: the viewing aperture has all been seted up to the left end face and the right-hand member face of hopper, just can observe the inside gauze mask surplus of hopper through the viewing aperture, can be more quick confirm the gauze mask volume in the hopper.
As a still further scheme of the invention: the left end face of the first mounting frame is fixedly provided with a sensor assembly, the sensor assembly faces to the leftmost side of the horizontal part at the upper end of the chain, and the speed of conveying the mask by the conveying belt is not the same at every time, so that the sensor assembly is required to detect the mask, and only when the mask is conveyed to the feeding plate, the first driving assembly can act.
As a still further scheme of the invention: the rotating assembly comprises a second mounting frame, the second mounting frame is fixedly mounted on the front end face of the mounting frame through bolts, an adsorption port is rotatably mounted on the lower end face of the second mounting frame, a first synchronizing wheel is mounted at the upper end of the adsorption port, a third driving assembly is fixedly mounted on the upper end face of the second mounting frame, a second synchronizing wheel is fixedly mounted on an output shaft of the third driving assembly, the first synchronizing wheel and the second synchronizing wheel are in synchronous belt transmission, a negative pressure pipe is fixedly mounted at the upper end of the second mounting frame and is communicated with the adsorption port, when the mask runs to the position under the position of the rotating assembly, the rear end of the mask is positioned at the welding position of the welding assembly, the welding assembly can weld the rear end of the mask and an ear belt, the mask needs to be rotated by 180 degrees after welding, then the negative pressure device is started, and is communicated with the adsorption port through the negative pressure pipe, just so can adsorb the gauze mask through adsorbing the mouth, then the third drive assembly can move and make and adsorb mouthful rotatory 180, and the gauze mask has just accomplished rotatoryly like this, and welding assembly can carry out the ear area welding to the one end that the gauze mask does not have the ear area next.
As a still further scheme of the invention: a plurality of recesses have been seted up to the equidistant lower terminal surface of absorption mouth, when adsorbing the gauze mask through adsorbing the mouth, the gauze mask can be adsorbed at the lower terminal surface that adsorbs the mouth, and at this moment mouthful gas just can follow and get into in the recess that adsorbs mouthful lower extreme and adsorb the mouth, guarantees that the pressure of adsorbing the gauze mask can not be too big, just so can prevent that the gauze mask from being adsorbed in adsorbing mouthful.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
through the place ahead installation pay-off subassembly at welding subassembly, terminal surface installation feed subassembly and rotating assembly before the pay-off subassembly, the feed subassembly can be delivered to the gauze mask on the delivery sheet of pay-off subassembly, then when the gauze mask moves under the rotating assembly, the rear end of gauze mask just stretches into the weld zone territory of welding subassembly, then the welding subassembly welds the rear end and the ear area of gauze mask, rotating assembly can suck up the gauze mask and then rotate 180 after the welding is accomplished, through the pay-off subassembly, full automatic operation has been realized in feed subassembly and rotating assembly cooperation, no longer need artifical manual welding, welding speed is more stable in the manual work, higher efficiency, and the welded quality is more guaranteed, various defects when having solved artifical welding in the past.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a rear view of a portion of the present invention;
FIG. 3 is a schematic view of the feed assembly of the present invention;
FIG. 4 is a schematic left side view of the feed assembly of the present invention;
FIG. 5 is a schematic right side view of the feed assembly of the present invention;
FIG. 6 is a left side view of the rotating assembly of the present invention;
fig. 7 is a bottom view of the rotating assembly of the present invention.
In the figure: 1-welding component, 2-feeding component, 3-mounting frame, 4-chain wheel, 5-chain, 6-feeding plate, 7-feeding component, 8-rotating component, 9-first driving component, 10-enclosing plate, 11-first mounting frame, 12-conveying belt, 13-hopper, 14-discharging port, 15-second driving component, 16-observation port, 17-sensor component, 18-second mounting frame, 19-adsorption port, 20-first synchronous wheel, 21-third driving component, 22-second synchronous wheel, 23-synchronous belt, 24-negative pressure pipe and 25-groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, in the embodiment of the invention, a mask ear band welding device for a mask production line comprises a welding assembly 1 and a feeding assembly 2, wherein the feeding assembly 2 comprises an installation frame 3, chain wheels 4 are rotatably installed in the middle of the installation frame 3, the two groups of chain wheels 4 are symmetrically installed on the left and right sides, the two groups of chain wheels 4 are driven by chains 5, a feeding plate 6 is fixedly installed on the surface of each chain 5, a feeding assembly 7, a rotating assembly 8 and a first driving assembly 9 are fixedly installed on the front end face of the installation frame 3, and the first driving assembly 9 provides power for the chain wheels 4.
In this embodiment, the front side of 6 up end of feed plate, left side and right side fixed mounting have bounding wall 10, and feed subassembly 7 can give the gauze mask to the up end of feed plate 6, and bounding wall 10 can control spacingly to the gauze mask, prevents that feed plate 6 from taking place the displacement at the in-process gauze mask of action, causes the ear area welding position deviation of gauze mask, influences the quality of gauze mask.
In this embodiment, feed subassembly 7 includes first mounting bracket 11, conveyer belt 12 is installed on the middle upper portion of first mounting bracket 11, the up end fixed mounting of first mounting bracket 11 has hopper 13, discharge gate 14 has been seted up to the rear end face of hopper 13, the left end face fixed mounting of first mounting bracket 11 has second drive assembly 15, second drive assembly 15 provides power for conveyer belt 12, only need stack the gauze mask in hopper 13, then conveyer belt 12 will take place the contact with the gauze mask that is in the lower extreme, just can remove the gauze mask towards feed plate 6 through conveyer belt 12 rotation, control only a gauze mask at every turn through the high restriction of discharge gate 14 and leave hopper 13, realize automatic single pay-off.
In this embodiment, the level of conveyer belt 12 up end is the same with the level of bounding wall 10 up end, guarantees that the gauze mask can follow the steady removal of conveyer belt 12 to pay-off board 6 on, has increased the stability of gauze mask feed.
In this embodiment, viewing aperture 16 has all been seted up to the left end face and the right-hand member face of hopper 13, just can observe the inside gauze mask surplus of hopper 13 through viewing aperture 16, can be faster confirm the gauze mask volume in the hopper 13.
In this embodiment, the sensor assembly 17 is fixedly mounted on the left end face of the first mounting frame 11, the sensor assembly 17 faces the leftmost horizontal part of the upper end of the chain 5, and the speed of conveying the mask by the conveyor belt 12 is not the same every time, so that the sensor assembly 17 is required to detect the mask, and the first driving assembly 9 can only act when the mask is conveyed to the feeding plate 6.
In this embodiment, the rotating assembly 8 includes a second mounting frame 18, the second mounting frame 18 is fixedly mounted on the front end surface of the mounting frame 3 through bolts, the lower end surface of the second mounting frame 18 is rotatably mounted with an adsorption port 19, the upper end of the adsorption port 19 is mounted with a first synchronizing wheel 20, the upper end surface of the second mounting frame 18 is fixedly mounted with a third driving assembly 21, the output shaft of the third driving assembly 21 is fixedly mounted with a second synchronizing wheel 22, the first synchronizing wheel 20 and the second synchronizing wheel 22 are driven by a synchronizing belt 23, the upper end of the second mounting frame 18 is fixedly mounted with a negative pressure pipe 24, the negative pressure pipe 24 is communicated with the adsorption port 19, when the mask moves to a position right below the rotating assembly 8, the rear end of the mask is located at the welding position of the welding assembly 1, then the welding assembly 1 welds the rear end and the ear strap of the mask, the mask needs to rotate by 180 ° after the welding is completed, at this time, the negative pressure device is started, negative pressure device passes through negative pressure pipe 24 and adsorbs mouthful 19 intercommunication, just so can adsorb the gauze mask through adsorbing mouthful 19, then third drive assembly 21 can move and make and adsorb mouthful 19 rotatory 180, and the gauze mask has just accomplished rotatoryly like this, and welding subassembly 1 can carry out the ear area welding to the one end that the gauze mask does not have the ear area next.
In this embodiment, adsorb a plurality of recesses 25 that have seted up to the lower terminal surface equidistant of mouthful 19, when adsorbing the gauze mask through adsorbing mouthful 19, the gauze mask can be adsorbed in the lower terminal surface of adsorbing mouthful 19, and at this moment mouthful gas just can follow and get into in the recess 25 of adsorbing mouthful 19 lower extreme and adsorb mouthful 19, guarantees that the pressure of adsorbing mouthful 19 cover can not be too big, just so can prevent that the gauze mask from being adsorbed in adsorbing mouthful 19.
The working principle of the invention is as follows:
firstly, a stacked mask cloth is placed in a hopper 13, then a first driving component 9, a second driving component 15 and a third driving component 21 are started simultaneously, at the moment, a conveyor belt 12 starts to operate, the mask cloth in the hopper 13 is conveyed to a placing plate through the conveyor belt 12 one by one due to the height limitation of a discharge port 14, when the mask cloth falls on the placing plate, a sensor component 17 sends a signal, at the moment, the first driving component 9 acts, a chain wheel 4 drives a chain 5 to rotate, the placing plate provided with the mask cloth is displaced to the right by the distance of the placing plate, when the mask cloth level is displaced to the right front of a welding component 1, the welding component 1 acts to weld the rear end of the mask cloth with an ear band, after the welding component 1 acts, a negative pressure device starts to suck the mask through an adsorption port 19, then third drive assembly 21 can move and drive first synchronizing wheel 20 through second synchronizing wheel 22 and rotate 180, first synchronizing wheel 20 will drive and adsorb mouth 19 and rotate 180, the gauze mask will be rotated 180 like this, the one end that has welded the ear area can be rotated to keeping away from welding assembly 1, welding assembly 1 moves once more next and carries out the ear area welding to the gauze mask one end that does not weld the ear area to this is reciprocal just can realize automatic ear area welding.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The utility model provides a gauze mask ear area welding set of gauze mask production line, includes welding subassembly (1) and pay-off subassembly (2), its characterized in that: pay-off subassembly (2) are including installing frame (3), the centre of installing frame (3) is rotated and is installed sprocket (4), sprocket (4) bilateral symmetry installs two sets ofly, through chain (5) transmission between two sets of sprocket (4), chain (5) fixed surface installs feed plate (6), the preceding terminal surface fixed mounting of installing frame (3) has feed subassembly (7), rotating assembly (8) and first drive assembly (9), first drive assembly (9) provide power for sprocket (4).
2. The mask ear band welding device of a mask production line according to claim 1, characterized in that: and enclosing plates (10) are fixedly arranged on the front side, the left side and the right side of the upper end surface of the feeding plate (6).
3. The mask ear band welding device of a mask production line according to claim 1, characterized in that: feed subassembly (7) include first mounting bracket (11), conveyer belt (12) are installed on the middle upper portion of first mounting bracket (11), the up end fixed mounting of first mounting bracket (11) has hopper (13), discharge gate (14) have been seted up to the rear end face of hopper (13), the left end face fixed mounting of first mounting bracket (11) has second drive assembly (15), second drive assembly (15) provide power for conveyer belt (12).
4. The mask ear band welding device of a mask production line according to claim 3, characterized in that: the horizontal height of the upper end face of the conveyor belt (12) is the same as that of the upper end face of the coaming plate (10).
5. The mask ear band welding device of a mask production line according to claim 3, characterized in that: and the left end surface and the right end surface of the hopper (13) are both provided with observation ports (16).
6. The mask ear band welding device of a mask production line according to claim 3, characterized in that: and a sensor assembly (17) is fixedly mounted on the left end face of the first mounting frame (11), and the sensor assembly (17) faces to the leftmost side of the horizontal part of the upper end of the chain (5).
7. The mask ear band welding device of a mask production line according to claim 1, characterized in that: rotating assembly (8) include second mounting bracket (18), second mounting bracket (18) are through the preceding terminal surface of bolt fixed mounting at installing frame (3), the lower terminal surface of second mounting bracket (18) rotates and installs and adsorbs mouth (19), first synchronizing wheel (20) are installed to the upper end of adsorbing mouth (19), the up end fixed mounting of second mounting bracket (18) has third drive assembly (21), the output shaft fixed mounting of third drive assembly (21) has second synchronizing wheel (22), first synchronizing wheel (20) and second synchronizing wheel (22) pass through hold-in range (23) transmission, the upper end fixed mounting of second mounting bracket (18) has negative pressure pipe (24), negative pressure pipe (24) and adsorption mouth (19) intercommunication.
8. The mask ear band welding device of a mask production line according to claim 7, characterized in that: the lower end face of the adsorption port (19) is provided with a plurality of grooves (25) at equal intervals.
CN202110521195.4A 2021-05-13 2021-05-13 Mask ear belt welding device of mask production line Pending CN113276432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110521195.4A CN113276432A (en) 2021-05-13 2021-05-13 Mask ear belt welding device of mask production line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110521195.4A CN113276432A (en) 2021-05-13 2021-05-13 Mask ear belt welding device of mask production line

Publications (1)

Publication Number Publication Date
CN113276432A true CN113276432A (en) 2021-08-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110521195.4A Pending CN113276432A (en) 2021-05-13 2021-05-13 Mask ear belt welding device of mask production line

Country Status (1)

Country Link
CN (1) CN113276432A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019183341A (en) * 2018-04-13 2019-10-24 花王株式会社 Production method of sheet-state mask
CN212072998U (en) * 2020-05-12 2020-12-04 广东威发激光科技有限公司 Double-station mask ear belt welding platform
CN212288795U (en) * 2020-05-27 2021-01-05 广东省机械研究所有限公司 Welding machine for ear belt of gauze mask
CN112248452A (en) * 2020-10-05 2021-01-22 唐健 Mask ear strap welding equipment
CN212686792U (en) * 2020-03-17 2021-03-12 泉州智造者机械设备有限公司 Output device of mask body machine
KR102237295B1 (en) * 2020-08-25 2021-04-07 주재영 Apparatus for continuously manufacturing face mask

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019183341A (en) * 2018-04-13 2019-10-24 花王株式会社 Production method of sheet-state mask
CN212686792U (en) * 2020-03-17 2021-03-12 泉州智造者机械设备有限公司 Output device of mask body machine
CN212072998U (en) * 2020-05-12 2020-12-04 广东威发激光科技有限公司 Double-station mask ear belt welding platform
CN212288795U (en) * 2020-05-27 2021-01-05 广东省机械研究所有限公司 Welding machine for ear belt of gauze mask
KR102237295B1 (en) * 2020-08-25 2021-04-07 주재영 Apparatus for continuously manufacturing face mask
CN112248452A (en) * 2020-10-05 2021-01-22 唐健 Mask ear strap welding equipment

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Application publication date: 20210820

RJ01 Rejection of invention patent application after publication