CN212862767U - Conveying mechanism of mask machine - Google Patents

Conveying mechanism of mask machine Download PDF

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Publication number
CN212862767U
CN212862767U CN202020598162.0U CN202020598162U CN212862767U CN 212862767 U CN212862767 U CN 212862767U CN 202020598162 U CN202020598162 U CN 202020598162U CN 212862767 U CN212862767 U CN 212862767U
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CN
China
Prior art keywords
gear
machine body
rotating mechanism
sleeve
gear rotating
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Expired - Fee Related
Application number
CN202020598162.0U
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Chinese (zh)
Inventor
徐金奎
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Dongguan Kuike Automation Equipment Co ltd
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Dongguan Kuike Automation Equipment Co ltd
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Priority to CN202020598162.0U priority Critical patent/CN212862767U/en
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Publication of CN212862767U publication Critical patent/CN212862767U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A conveying mechanism of a mask machine comprises a machine body and a conveying mechanism, wherein the conveying mechanism is arranged on the machine body; the conveying mechanism comprises a first gear rotating mechanism, a second gear rotating mechanism, a driving mechanism and a chain conveyor belt, the first gear rotating mechanism is arranged at the left side position of the upper end of the machine body, the second gear rotating mechanism is arranged at the right side position of the upper end of the machine body, the chain conveyor belt is meshed between the first gear rotating mechanism and the second gear rotating mechanism, the driving mechanism is arranged in the machine body, and the driving mechanism is in transmission fit with the chain conveyor belt; the chain conveyor belt comprises two parallel chains and a plurality of blocking blocks arranged between the two chains; the material pressing mechanism comprises two bridging supports and a pressing support, two ends of the two bridging supports are respectively installed on the machine body and located on two sides of the conveying mechanism, and two ends of the pressing support are respectively installed between the two bridging supports.

Description

Conveying mechanism of mask machine
Technical Field
The utility model belongs to the technical field of the gauze mask machine and specifically relates to a transport mechanism of gauze mask machine is related to.
Background
The mask machine is characterized in that a plurality of layers of non-woven fabrics are subjected to processes of hot pressing, folding forming, ultrasonic welding, waste material cutting, ear band nose bridge strip welding and the like to manufacture various masks with certain filtering performance, mask equipment is not a single machine, and various different processes are completed by matching a plurality of machines.
The plane gauze mask machine production be disposable planar gauze mask also be the machine equipment of production medical gauze mask, the gauze mask pattern of this kind of machine production is simply worn and is made with two-layer non-woven fabrics and filter paper and form, disposable three-layer gauze mask is used for the fibre non-woven fabrics that medical health was used for by the specialty in the middle of two-layer increase one deck filter play fungi-proofing reach more than 99% melt-blown cloth via ultrasonic welding and forms.
At present, a mask body is formed after a mask is subjected to laminated edge sealing and cutting by a mask machine, the mask body enters ear band welding equipment to be installed with an ear band, most of the existing transportation mechanisms for transporting the mask body set a conveyor belt into a plurality of identical isolation positions, the mask is placed in the isolation positions, and then the mask is transported into the welding equipment to be welded so as to keep the position of the mask; however, the existing transportation mechanism is still to be improved, the position of the mask is not reasonable enough only by blocking positions, and the situation that one or two masks deviate from each other is inevitable when the mask body is subjected to air resistance or other external acting force in the transportation process, so that further improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.
A conveying mechanism of a mask machine comprises a machine body and a conveying mechanism, wherein the conveying mechanism is arranged on the machine body; the conveying mechanism comprises a first gear rotating mechanism, a second gear rotating mechanism, a driving mechanism and a chain conveyor belt, the first gear rotating mechanism is arranged at the left side position of the upper end of the machine body, the second gear rotating mechanism is arranged at the right side position of the upper end of the machine body, the chain conveyor belt is meshed between the first gear rotating mechanism and the second gear rotating mechanism, the driving mechanism is arranged in the machine body, and the driving mechanism is in transmission fit with the chain conveyor belt; the chain conveyor belt comprises two parallel chains and a plurality of blocking blocks arranged between the two chains; the pressing mechanism comprises two bridging supports and a pressing support, two ends of the two bridging supports are respectively arranged on the machine body and located at two sides of the conveying mechanism, two ends of the pressing support are respectively arranged between the two bridging supports, the pressing support is located at the upper end of the conveying mechanism, and the pressing support is matched with the blocking blocks; the guide plates perpendicular to the upper end of the rack are further respectively installed on two sides of the transporting mechanism on the machine body, guide strips parallel to the transporting mechanism are respectively installed on the opposite faces of the guide plates, inclined walls are arranged on the upper surfaces of the guide strips towards one end of the head of the transporting mechanism, the bottom ends of the inclined walls are lower than the upper ends of the blocking blocks, and the top ends of the inclined walls are higher than the upper ends of the blocking blocks.
Preferably, the left and right side edges of the separation stop block are respectively formed with a stop strip, the middle position of the stop strip is disconnected, the pressing bracket is arranged at the middle position of the stop strip, the upper end of the stop strip is higher than the upper end of the guide strip, and the two adjacent stop strips opposite to the separation stop block are mutually matched.
Preferably, the right-angle fixing parts are respectively installed at the front position and the rear position of the lower end of the separation stop block, one end of the right-angle fixing part is fixed at the lower end of the separation stop block, the other end of the right-angle fixing part is sleeved on a chain pin of a chain, the right-angle fixing part located at the front end of the separation stop block is sleeved on the chain located at the front side, and the right-angle fixing part located at the rear end is sleeved on the chain located at the rear side.
Preferably, the driving mechanism comprises a third gear rotating mechanism, a fourth gear rotating mechanism, a driving motor, a synchronizing wheel mechanism and a mounting plate, the mounting plate is mounted at the bottom of the machine body, the driving motor is mounted on the mounting plate, the third gear rotating mechanism is mounted at the bottom of the machine body, the third gear rotating mechanism is positioned under the first gear rotating mechanism, the fourth gear rotating mechanism is mounted at the bottom of the machine body, and the fourth gear rotating mechanism is positioned under the second gear rotating mechanism; the synchronous wheel mechanism is connected between the driving motor and the third gear rotating mechanism, the third gear rotating mechanism is in power fit with the driving motor through the synchronous wheel mechanism, and the chain conveyor belt is meshed among the first gear rotating mechanism, the second gear rotating mechanism, the third gear rotating mechanism and the fourth gear rotating mechanism.
Preferably, the first gear rotating mechanism, the second gear rotating mechanism, the third gear rotating mechanism and the fourth gear rotating mechanism have the same structure, the first gear rotating mechanism, the second gear rotating mechanism and the fourth gear rotating mechanism respectively comprise a first rotating shaft, a first rotating shaft mounting seat, a first deep groove bearing, a first bearing fixing sleeve and a first gear sleeve, the first rotating shaft mounting seats are fixed at two ends of the first rotating shaft, the first rotating shaft of the first gear rotating mechanism is fixed at the left position of the upper end of the machine body through the first rotating shaft mounting seat, the first rotating shaft of the second gear rotating mechanism is fixed at the right position of the upper end of the machine body through the first rotating shaft mounting seat, and the first rotating shaft of the fourth gear rotating mechanism is fixed at the right position of the bottom end of the machine body through the first rotating shaft mounting seat; first deep groove bearing cup joints the intermediate position on first rotation axis through the fixed cover slip of first bearing, and first gear sleeve slides and cup joints on first deep groove bearing, and the first gear in the right side is shaped respectively at first gear sleeve's both ends, two chains of chain conveyer belt mesh respectively on the first gear at first gear sleeve both ends.
Preferably, the third gear rotating mechanism comprises a second rotating shaft, a second rotating shaft mounting seat and a second gear sleeve, the second rotating shaft mounting seat is fixed at two ends of the second rotating shaft, the second rotating shaft is fixed at the left position of the bottom of the machine body through the second rotating shaft mounting seat, the second gear sleeve is fixed at the middle position of the second rotating shaft, second gears are formed at two ends of the second gear sleeve respectively, and two chains of the chain conveying belt are meshed with the second gears at two ends of the second gear sleeve respectively.
Preferably, the driving mechanism further comprises an active rotating shaft, a detection shaft sleeve, a sensor mounting piece and a second inductor, wherein one end of the active rotating shaft is axially and fixedly connected with the driving motor, the detection shaft sleeve is fixed at the other end of the active rotating shaft, detection blocks which are uniformly arranged along the side wall are formed on the detection shaft sleeve, the sensor mounting piece is mounted on the mounting plate, the second inductor is mounted on the sensor mounting piece, and the second inductor is in induction butt joint with the detection blocks on the detection shaft sleeve; the guide plate is further provided with a first inductor, and the first inductor is in induction butt joint with the blocking blocks at the head of the conveying mechanism.
Compared with the prior art, the beneficial effects of the utility model are that:
after the mask is placed on the conveying mechanism, the left end and the right end of the mask are propped by the blocking strips at the left end and the right end of the blocking block, the front end and the rear end of the mask are straightened under the action of the guide plate and the guide strips, and then the mask is tightly pressed on the blocking block by the pressing support, so that the position of the mask is ensured to be unchanged; the mask can completely overcome air resistance and other external forces in the transportation process, and the production efficiency and the production quality are improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the connection of the components of the chain conveyor of the present invention.
Fig. 3 is a schematic structural view of the present invention with the lower body removed.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, a transportation mechanism 10 of a mask machine includes a machine body 1, and further includes a transportation mechanism 10, where the transportation mechanism 10 is installed on the machine body 1; the transportation mechanism 10 comprises a first gear rotation mechanism 12, a second gear rotation mechanism 13, a driving mechanism 30 and a chain conveyor belt 11, wherein the first gear rotation mechanism 12 is installed at the left side position of the upper end of the machine body 1, the second gear rotation mechanism 13 is installed at the right side position of the upper end of the machine body 1, the chain conveyor belt 11 is meshed between the first gear rotation mechanism 12 and the second gear rotation mechanism 13, the driving mechanism 30 is installed inside the machine body 1, and the driving mechanism 30 is in transmission fit with the chain conveyor belt 11; the chain conveyor belt 11 comprises two parallel chains 111 and a plurality of blocking blocks 112 arranged between the two chains 111; the pressing mechanism 20 comprises two bridging supports 21 and a pressing support 22, two ends of the two bridging supports 21 are respectively installed on the machine body 1 and located at two sides of the conveying mechanism 10, two ends of the pressing support 22 are respectively installed between the two bridging supports 21, the pressing support 22 is located at the upper end of the conveying mechanism 10, and the pressing support 22 is matched with the blocking block 112; guide plates 23 perpendicular to the upper end of the rack are further respectively installed on two sides of the transportation mechanism 10 on the machine body 1, guide strips 24 parallel to the transportation mechanism 10 are respectively installed on the opposite surfaces of the guide plates 23, an inclined wall 241 is arranged on the upper surface of one end, facing the head of the transportation mechanism 10, of each guide strip 24, the bottom end of each inclined wall 241 is lower than the upper end of the partition block 112, and the top end of each inclined wall 241 is higher than the upper end of the partition block 112.
As further shown in fig. 1 to 3, the left and right side edges of the blocking piece 112 are respectively formed with a blocking strip 113, the middle position of the blocking strip 113 is disconnected, the pressing bracket 22 is located at the middle position of the blocking strip 113, the upper end of the blocking strip 113 is higher than the upper end of the guide strip 24, and the blocking strips 113 opposite to two adjacent blocking pieces 112 are matched with each other.
In the above embodiment, after the mask is placed on the transportation mechanism 10, the barrier strips 113 at the left and right ends of the barrier block 112 support the left and right ends of the mask, the front and rear ends of the mask are aligned under the action of the guide plate 23 and the guide strips 24, and then the mask is pressed against the barrier block 112 by the pressing bracket 22, so as to ensure that the position of the mask is unchanged; the mask can completely overcome air resistance and other external forces in the transportation process, and the production efficiency and the production quality are improved.
As further shown in fig. 2, right-angle fixing pieces 114 are respectively installed at the front and rear positions of the lower end of the partition block 112, one end of each right-angle fixing piece 114 is fixed at the lower end of the partition block 112, the other end of each right-angle fixing piece 114 is sleeved on a chain pin of the chain 111, the right-angle fixing piece 114 at the front end of the partition block 112 is sleeved on the chain 111 at the front side, and the right-angle fixing piece 114 at the rear end is sleeved on the chain 111 at the rear side; the front end and the rear end of the baffle block 112 are fixed on the chain pins of the chain 111 by the right-angle fixing piece 114, so that the baffle block 112 can turn along the chain 111, and the problem that the baffle block 112 is blocked in the operation process is solved.
As further shown in fig. 3, the driving mechanism 30 includes a third gear rotating mechanism 34, a fourth gear rotating mechanism 37, a driving motor 32, a synchronizing gear mechanism 33 and a mounting plate 31, the mounting plate 31 is mounted at the bottom of the machine body 1, the driving motor 32 is mounted on the mounting plate 31, the third gear rotating mechanism 34 is mounted at the bottom of the machine body 1, the third gear rotating mechanism 34 is located right below the first gear rotating mechanism 12, the fourth gear rotating mechanism 37 is mounted at the bottom of the machine body 1, and the fourth gear rotating mechanism 37 is located right below the second gear rotating mechanism 13; the synchronizing gear mechanism 33 is connected between the driving motor 32 and the third gear rotating mechanism 34, the third gear rotating mechanism 34 is in power fit with the driving motor 32 through the synchronizing gear mechanism 33, and the chain transmission belt 11 is engaged between the first gear rotating mechanism 12, the second gear rotating mechanism 13, the third gear rotating mechanism 34 and the fourth gear rotating mechanism 37.
As further shown in fig. 3, the first gear rotating mechanism 12, the second gear rotating mechanism 13, the third gear rotating mechanism 34 and the fourth gear rotating mechanism 37 have the same structure, the first gear rotating mechanism 12, the second gear rotating mechanism 13 and the fourth gear rotating mechanism 37 respectively include a first rotating shaft 41, the first gear rotating mechanism comprises a first rotating shaft mounting seat 42, a first deep groove bearing 43, a first bearing fixing sleeve 44 and a first gear sleeve 45, wherein the first rotating shaft mounting seat 42 is fixed at two ends of a first rotating shaft 41, the first rotating shaft 41 of the first gear rotating mechanism 12 is fixed at the left position of the upper end of the machine body 1 through the first rotating shaft mounting seat 42, the first rotating shaft 41 of the second gear rotating mechanism 13 is fixed at the right position of the upper end of the machine body 1 through the first rotating shaft mounting seat 42, and the first rotating shaft 41 of the fourth gear rotating mechanism 37 is fixed at the right position of the bottom end of the machine body 1 through the first rotating shaft mounting seat 42; the first deep groove bearing 43 is slidably sleeved at the middle position of the first rotating shaft 41 through the first bearing fixing sleeve 44, the first gear sleeve 45 is slidably sleeved on the first deep groove bearing 43, the right first gears are respectively formed at two ends of the first gear sleeve 45, and the two chains 111 of the chain conveyor belt 11 are respectively meshed with the first gears at two ends of the first gear sleeve 45.
As further shown in fig. 3, the third gear rotating mechanism 34 includes a second rotating shaft 342, a second rotating shaft mounting seat 341 and a second gear sleeve 343, the second rotating shaft mounting seat 341 is fixed at two ends of the second rotating shaft 342, the second rotating shaft 342 is fixed at a left position of the bottom of the machine body 1 through the second rotating shaft mounting seat 341, the second gear sleeve 343 is fixed at a middle position on the second rotating shaft 342, second gears are respectively formed at two ends of the second gear sleeve 343, and the two chains 111 of the chain conveyor 11 are respectively engaged with the second gears at two ends of the second gear sleeve 343.
As further shown in fig. 3, the driving mechanism 30 further includes an active rotating shaft 35, a detecting shaft sleeve 36, a sensor mounting member 37 and a second sensor 371, wherein one end of the active rotating shaft 35 is axially fixedly connected to the driving motor 32, the detecting shaft sleeve 36 is fixed to the other end of the active rotating shaft 35, detecting blocks 361 are formed on the detecting shaft sleeve 36 and are uniformly arranged along the side wall, the sensor mounting member 37 is mounted on the mounting plate 31, the second sensor 371 is mounted on the sensor mounting member 37, and the second sensor 371 is in induction butt joint with the detecting blocks 361 on the detecting shaft sleeve 36; passing through a second inductor 371; the guide plate 23 is further provided with a first inductor 372, and the first inductor 372 is in induction butt joint with the blocking block 112 of the head of the transportation mechanism 10; through the response butt joint of first inductor 372 and second inductor 371, after gauze mask entering transport mechanism 10, first inductor 372 response drive driving motor 32 moves, and driving motor 32's rotation drives the epaxial detection axle sleeve 36 of initiative pivot 35, makes the detection piece 361 and the response of second inductor 371 on the detection axle sleeve 36, and control driving motor 32 customization operation to realize that transport mechanism 10 just moves under the condition that has the gauze mask to put into.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. The conveying mechanism of the mask machine comprises a machine body and is characterized by further comprising a conveying mechanism, wherein the conveying mechanism is installed on the machine body; the conveying mechanism comprises a first gear rotating mechanism, a second gear rotating mechanism, a driving mechanism and a chain conveyor belt, the first gear rotating mechanism is arranged at the left side position of the upper end of the machine body, the second gear rotating mechanism is arranged at the right side position of the upper end of the machine body, the chain conveyor belt is meshed between the first gear rotating mechanism and the second gear rotating mechanism, the driving mechanism is arranged in the machine body, and the driving mechanism is in transmission fit with the chain conveyor belt; the chain conveyor belt comprises two parallel chains and a plurality of blocking blocks arranged between the two chains; the pressing mechanism comprises two bridging supports and a pressing support, two ends of the two bridging supports are respectively arranged on the machine body and located at two sides of the conveying mechanism, two ends of the pressing support are respectively arranged between the two bridging supports, the pressing support is located at the upper end of the conveying mechanism, and the pressing support is matched with the blocking blocks; the guide plates perpendicular to the upper end of the rack are further respectively installed on two sides of the transporting mechanism on the machine body, guide strips parallel to the transporting mechanism are respectively installed on the opposite faces of the guide plates, inclined walls are arranged on the upper surfaces of the guide strips towards one end of the head of the transporting mechanism, the bottom ends of the inclined walls are lower than the upper ends of the blocking blocks, and the top ends of the inclined walls are higher than the upper ends of the blocking blocks.
2. The transporting mechanism of mask machine according to claim 1, wherein the left and right side edges of the separating block are respectively formed with a blocking strip, the middle position of the blocking strip is disconnected, the pressing bracket is at the middle position of the blocking strip, the upper end of the blocking strip is higher than the upper end of the guiding strip, and the blocking strips opposite to two adjacent separating blocks are matched with each other.
3. The transportation mechanism of mask machine according to claim 1, wherein the right angle fixing members are respectively installed at the front and rear positions of the lower end of the separation block, one end of the right angle fixing member is fixed at the lower end of the separation block, the other end of the right angle fixing member is sleeved on the chain pin of the chain, the right angle fixing member at the front end of the separation block is sleeved on the chain at the front side, and the right angle fixing member at the rear end is sleeved on the chain at the rear side.
4. The transportation mechanism of mask machine according to claim 1, wherein the driving mechanism comprises a third gear rotation mechanism, a fourth gear rotation mechanism, a driving motor, a synchronous wheel mechanism and a mounting plate, the mounting plate is mounted at the bottom of the machine body, the driving motor is mounted on the mounting plate, the third gear rotation mechanism is mounted at the bottom of the machine body, the third gear rotation mechanism is located right below the first gear rotation mechanism, the fourth gear rotation mechanism is mounted at the bottom of the machine body, and the fourth gear rotation mechanism is located right below the second gear rotation mechanism; the synchronous wheel mechanism is connected between the driving motor and the third gear rotating mechanism, the third gear rotating mechanism is in power fit with the driving motor through the synchronous wheel mechanism, and the chain conveyor belt is meshed among the first gear rotating mechanism, the second gear rotating mechanism, the third gear rotating mechanism and the fourth gear rotating mechanism.
5. The transportation mechanism of mask machine according to claim 4, wherein the first gear rotation mechanism, the second gear rotation mechanism, the third gear rotation mechanism and the fourth gear rotation mechanism have the same structure, the first gear rotation mechanism, the second gear rotation mechanism and the fourth gear rotation mechanism respectively comprise a first rotation shaft, the first rotating shaft mounting seats are fixed at two ends of a first rotating shaft, the first rotating shaft of the first gear rotating mechanism is fixed at the left position of the upper end of the machine body through the first rotating shaft mounting seats, the first rotating shaft of the second gear rotating mechanism is fixed at the right position of the upper end of the machine body through the first rotating shaft mounting seats, and the first rotating shaft of the fourth gear rotating mechanism is fixed at the right position of the bottom end of the machine body through the first rotating shaft mounting seats; first deep groove bearing cup joints the intermediate position on first rotation axis through the fixed cover slip of first bearing, and first gear sleeve slides and cup joints on first deep groove bearing, and the first gear in the right side is shaped respectively at first gear sleeve's both ends, two chains of chain conveyer belt mesh respectively on the first gear at first gear sleeve both ends.
6. The transportation mechanism of mask machine according to claim 4, wherein the third gear rotation mechanism comprises a second rotation shaft, a second rotation shaft mounting seat and a second gear sleeve, the second rotation shaft mounting seat is fixed at two ends of the second rotation shaft, the second rotation shaft is fixed at the left position of the bottom of the machine body through the second rotation shaft mounting seat, the second gear sleeve is fixed at the middle position of the second rotation shaft, the two ends of the second gear sleeve are respectively formed with a second gear, and the two chains of the chain conveyor are respectively engaged with the second gears at two ends of the second gear sleeve.
7. The transportation mechanism of mask machine according to claim 4, wherein the driving mechanism further comprises an active shaft, a detecting shaft sleeve, a sensor mounting member and a second sensor, one end of the active shaft is axially and fixedly connected with the driving motor, the detecting shaft sleeve is fixed on the other end of the active shaft, detecting blocks uniformly arranged along the side wall are formed on the detecting shaft sleeve, the sensor mounting member is mounted on the mounting plate, the second sensor is mounted on the sensor mounting member, and the second sensor is in induction butt joint with the detecting blocks on the detecting shaft sleeve; the guide plate is further provided with a first inductor, and the first inductor is in induction butt joint with the blocking blocks at the head of the conveying mechanism.
CN202020598162.0U 2020-04-21 2020-04-21 Conveying mechanism of mask machine Expired - Fee Related CN212862767U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020598162.0U CN212862767U (en) 2020-04-21 2020-04-21 Conveying mechanism of mask machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020598162.0U CN212862767U (en) 2020-04-21 2020-04-21 Conveying mechanism of mask machine

Publications (1)

Publication Number Publication Date
CN212862767U true CN212862767U (en) 2021-04-02

Family

ID=75186444

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020598162.0U Expired - Fee Related CN212862767U (en) 2020-04-21 2020-04-21 Conveying mechanism of mask machine

Country Status (1)

Country Link
CN (1) CN212862767U (en)

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Granted publication date: 20210402