CN109680389A - A kind of safe automobile air bag flicks the reinforcing rib fabric weaving machine in flip lid - Google Patents
A kind of safe automobile air bag flicks the reinforcing rib fabric weaving machine in flip lid Download PDFInfo
- Publication number
- CN109680389A CN109680389A CN201910053057.0A CN201910053057A CN109680389A CN 109680389 A CN109680389 A CN 109680389A CN 201910053057 A CN201910053057 A CN 201910053057A CN 109680389 A CN109680389 A CN 109680389A
- Authority
- CN
- China
- Prior art keywords
- numerical control
- heald frame
- electronic box
- servo motor
- reinforcing rib
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C1/00—Dobbies
- D03C1/14—Features common to dobbies of different types
- D03C1/16—Arrangements of dobby in relation to loom
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D39/00—Pile-fabric looms
- D03D39/22—Terry looms
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/02—General arrangements of driving mechanism
Abstract
The present invention relates to safe automobile air bags to flick the reinforcing rib fabric weaving machine in flip lid, including electronic box, rack, numerical control twists loom structure, numerical control reed moves looping beating-up mechanism, electronic dobby shedding mechanism, picking motion, electronic weft selection mechanism, Wei Jian mechanism, Zhao Wei mechanism, spooler, numerical control bottom warp feeding mechanism, numerical control doup end let-off mechanism, numerical control through let-off mechanism, active force mechanism, it twists and knits on the inside of the loom frame that guide rail is set between shedding mechanism and the dynamic looping beating-up mechanism of numerical control reed, it twists to knit heald frame and be individually directed to be limited in twist and knit in the parallel conductive track slot of guide rail, heald frame translates numerical control servo motor and couples eccentric rotor axis one end after the deceleration of deceleration mechanism, the eccentric rotor axis other end passes through the vertical waist hole on the limit sliding chutes plate being arranged on heald frame, limit sliding chutes plate is pushed to move left and right in bias；The movement of heald frame in loom real time execution, and then realizes that the strand of warp thread is knitted by numerical control servo motor.The present invention can meet simultaneously different modes and weave, and use scope is wide.
Description
Technical field
The present invention relates to a kind of multifunctional numerical control looms, specifically a kind of to turn over for weaving when safe automobile air bag flicks
The numerical control loom of reinforcing rib fabric in lid.
Background technique
Safe automobile air bag is usually embedded in below automotive plastic parts, and can explode pop-up when safety accident occurs, at this time gas
Plastic closure above capsule all explodes with air bag and is popped up at a high speed, is hurted sb.'s feelings due to prevent covering here not popping up, just must be
There is software reinforcing rib connection buffering to hold between this plastic lid and automotive plastic parts ontology, it is all the time this that there is function
Complex organization fabric weaving technology it is very backward, inefficiency, recruitment are more, while some particular tissues structures cannot
It realizes simultaneously.
Summary of the invention
The present invention solve disadvantages mentioned above, and devise it is a kind of meet it is a variety of knitted through skein, plain weave, looping height can be changed, change
Become filling density requirements of weaving process, take into account the weaving of various weft yarns, extraordinary tissue, special fibre, efficiently, safety, saves artificial automobile
Air bag flicks the reinforcing rib fabric weaving machine in flip lid.
The technical solution adopted by the present invention is that: a kind of safe automobile air bag flicks the reinforcing rib fabric weaving machine in flip lid, packet
It includes electronic box, rack, numerical control strand loom structure, numerical control reed and moves looping beating-up mechanism, electronic dobby shedding mechanism, picking motion, electronics
Weft selecting mechanism, Wei Jian mechanism, Zhao Wei mechanism, spooler, numerical control bottom warp feeding mechanism, numerical control doup end let-off mechanism, numerical control
Through let-off mechanism, active force mechanism, it is characterised in that: the numerical control twists loom structure, including twists and knit guide rail, twists and knit heald frame, heald frame
Translate numerical control servomotor, gear reducer structure, eccentric rotor axis, limit sliding chutes plate, strand knit guide rail be relatively arranged on shedding mechanism and
Numerical control reed moves on the inside of the loom frame between looping beating-up mechanism, and two or more twist to knit heald frame and be individually directed and are limited in strand and knit guide rail
Parallel conductive track slot more than two in, strand knits heald frame two sides and guide-track groove slot bottom there are translational gap, and every strand is knitted under heald frame
Portion borrows support mandrel at left and right sides of one group of electronic dobby shedding mechanism heald frame respectively and passes through the elevating lever knot in respective swing arm
Structure, which supports and borrows electronic dobby shedding mechanism and socket swing arm by broaching tool, drives elevating lever in jacking condition, through attachment base in rack
Heald frame is set and translates numerical control servo motor, heald frame translates numerical control servo motor and couples eccentric rotor axis one after the deceleration of deceleration mechanism
End, strand, which is knitted, to be fixed with limit sliding chutes plate or knits transverse direction hinged between two support elevating levers at left and right sides of heald frame with hank on heald frame
Limit sliding chutes plate is fixed on pull rod, limit sliding chutes plate is equipped with vertical waist hole up and down, and the eccentric rotor axis other end, which passes through, to hang down
Straight waist hole moves left and right state in eccentric promotion limit sliding chutes plate, and then drives hinged heald frame in lifting support while left and right shifting
It is dynamic；Numerical control twists heald frame translation numerical control servo motor in loom structure and couples electronic box, by electronic box according to setting technology controlling and process electronic dobby
Shedding mechanism twists through broaching tool, swing arm, elevating lever driving and knits heald frame up and down motion, while controlling heald frame translation numerical control servo motor and existing
Loom real time execution synchronous operation driving strand is knitted heald frame and is moved left and right, and then realizes the strand weaving of warp thread.
Further, encoder is set on loom main shaft or on synchronously driven axis, and electronic box control heald frame translation numerical control is watched
It takes motor and with or not with decoders-Synchronous runs driving in each latitude of loom real time execution and twist and knit heald frame and move left and right, Jin Ershi
The strand of existing warp thread or not the weaving knitted.
Further, the electro-magnetic signal portions of the electronic dobby shedding mechanism connect electronic box and by electronic box control broaching tools
Output sequence and then control twist the up and down motion sequence for knitting heald frame and common heald frame.
Further, the weft selecting mechanism connects electronic box, selects latitude to refer in the process output control weft selecting mechanism in electronic box
It is flexible so by be through at select latitude refer in different wefts feeding sword heads in.
Further, numerical control reed moves looping beating-up mechanism using numerical control fluffing servo motor connection electronic box control reed looping
Number and looping hair Gao great little.
Further, the spooler batches servo electricity using servo motor is batched through deceleration mechanism driving work beam
Machine connection electronic box simultaneously realizes change filling density by the coefficient operation set in technique in real time with encoder on loom main shaft by electronic box control
Weaving.
Further, numerical control bottom warp feeding mechanism, numerical control doup end let-off mechanism, include through let-off mechanism to numerical control
Numerical control servo motor, deceleration mechanism tension sensor, tension sense answer roller, elastic return mechanism, warp beam, and respective numerical control servo
Motor is all connected with electronic box and controls respective numerical control servo motor through each compared with setting value according to the measured value of tension sensor
Respective warp beam constant tension unwinding is driven from deceleration mechanism, to realize identical tension bottom warp feeding, the doup end warp let-off, the ground diameter warp let-off.
Further, the main motor that the active force mechanism is controlled by electronic box is set again through deceleration mechanism driving spindle, or separately
There is the clutch-brake biography by electronic box connection control to connect, active force motor, which is controlled by electronic box according to process output, realizes real-time speed change
Weaving.
Further, the picking motion is using conjugate cam driving or four-bar linkage driving or six drive links or space four
The sword head sword belt of drive links moves back and forth wefting insertion and realizes weft transfer.
Still further, the strand, which knits heald frame, borrows general heald frame.
When work, loom main shaft rotates synchronization encoders operation monitoring, and electronic dobby shedding mechanism separates more than two
It supports two or more to twist for oscilaltion and knits heald frame, every strand knits heald frame lower part through left and right sides support mandrel by respectively putting
Lifting rod structure support on arm, electronic dobby shedding mechanism socket swing arm by broaching tool and drive elevating lever in jacking condition, electronic box
Controlling heald frame translation numerical control servo motor drives the eccentric rotor axis other end is eccentric in vertical waist hole to push limit sliding chutes plate left
It moves or moves to right, and then drive hinged heald frame in lifting support while moving to left or moving to right, adjacent two in two or more hinged heald frames
Strand knits that heald frame is moved right relative to a first from left or a first from left moves right or mobile formed twists fell in the same direction, and then realizes the strand of warp thread
Or do not twist the weaving knitted.
Loom of the present invention can export the technique for executing and being arranged be stored in electronic box in advance and twist loom structure, electricity to control numerical control
Sub- type dobby shedding mechanism, numerical control reed have moved loop mechanism, picking motion, electronic weft selection mechanism, Wei Jian mechanism, spooler, numerical control
Bottom warp feeding mechanism, numerical control doup end let-off mechanism, numerical control ground diameter let-off mechanism, power mechanism are realizing the same of different weft weavings
When make different warp thread by twist knit, plain weave, looping, change filling density in the way of realize weaving, so that producing satisfaction is installed on difference
The air bag of car model different location is renovated when flicking while capable of opening in time, is passed through by the looping in the fabric functional area
Yarn buffering release pulling flip lid does not fly away from ontology and does not injure passenger inside the vehicle.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is A direction view in Fig. 1；
Fig. 3 is Fig. 2 top view；,
Fig. 4 is enlarged drawing at B in Fig. 2
Fig. 5 is C direction view in Fig. 2.
In figure: electronic box 1, rack 2, numerical control twists loom structure 3, numerical control reed moves looping beating-up mechanism 4, electronic dobby shedding mechanism
5, picking motion 6, spooler 7, numerical control bottom warp feeding mechanism 8, numerical control doup end let-off mechanism 9, numerical control through let-off mechanism 10,
Active force mechanism 11, encoder 13, twists and knits guide rail 14, twists and knit heald frame 15, heald frame translation numerical control servo motor 16, subtract main shaft 12
Fast mechanism 17, eccentric rotor axis 18, limit sliding chutes plate 19, kidney slot 20, mandrel 21, swing arm 22, elevating lever 23, cross-tie
24。
Specific embodiment
It is described further below in conjunction with drawings and examples.
Shown in Fig. 1-5: a kind of safe automobile air bag flick the reinforcing rib fabric weaving machine in flip lid include electronic box 1, rack 2,
Numerical control twists loom structure 3, numerical control reed moves looping beating-up mechanism 4, electronic dobby shedding mechanism 5, picking motion 6, spooler 7, number
Control bottom warp feeding mechanism 8, numerical control doup end let-off mechanism 9, numerical control through let-off mechanism 10, active force mechanism 11.Numerical control twists loom
Structure is set to numerical control reed and moves between looping beating-up mechanism 4, electronic dobby shedding mechanism 5, and it includes twisting to knit guide rail that numerical control, which twists loom structure 3,
14, it twists and knits heald frame 15, heald frame translation numerical control servo motor 16, deceleration mechanism 17, eccentric rotor axis 18, limit sliding chutes plate 19, twist
It knits on the inside of the loom frame 2 that guide rail 14 is relatively arranged between shedding mechanism and the dynamic looping beating-up mechanism of numerical control reed, two or more
It twists to knit heald frame 15 and be individually directed to be limited in twist and knit in the parallel conductive track slot more than two of guide rail, strand knits heald frame two sides and guide-track groove
There are translational gap, every strands to knit 15 lower part of heald frame and borrow respectively at left and right sides of one group of electronic dobby shedding mechanism heald frame for slot bottom
Support mandrel 21 passes through 23 structural support of elevating lever in respective swing arm 22 and borrows electronic dobby shedding mechanism to be socketed by broaching tool
It is in jacking condition that swing arm, which drives elevating lever, knits cross-tie hinged between two support elevating levers 23 at left and right sides of heald frame with hank
24, numerical control servo motor 16 is translated through attachment base setting heald frame in rack 2, and heald frame translates numerical control servo motor 16 through deceleration mechanism
Couple 18 one end of eccentric rotor axis after 17 decelerations, strand, which is knitted, to be fixed with limit sliding chutes plate 19 or knit a heald frame left side with hank on heald frame 15
It is fixed with limit sliding chutes plate on hinged cross-tie between the right support of two sides two elevating lever, limit sliding chutes plate 19 is equipped with up and down
Vertical waist hole 20,18 other end of eccentric rotor axis pass through vertical waist hole 20 and push limit sliding chutes plate to move left and right state in eccentric,
And then hinged heald frame is driven in lifting support while being moved left and right；Numerical control twists heald frame translation numerical control servo motor connection in loom structure
Electronic box 1 is twisted and is knitted on heald frame through broaching tool, swing arm, elevating lever driving according to setting technology controlling and process electronic dobby shedding mechanism by electronic box
Lower movement, while controlling heald frame translation numerical control servo motor and knitting heald frame or so shifting in loom real time execution synchronous operation driving strand
It is dynamic, and then realize the strand weaving of warp thread.
Encoder 13 is set on loom main shaft 12 or on synchronously driven axis, and electronic box 2 controls heald frame translation numerical control servo electricity
Machine is knitted heald frame with or not with decoders-Synchronous operation driving strand in each latitude of loom real time execution and is moved left and right, and then realizes warp
The strand of yarn or not the weaving knitted.
Electronic dobby shedding mechanism 5 electro-magnetic signal portions connection electronic box and by electronic box 2 control broaching tool output sequence into
And it controls and twists the up and down motion sequence for knitting heald frame and common heald frame.
Picking motion 6 includes electronic weft selection mechanism, Wei Jian mechanism, Zhao Wei mechanism, and weft selecting mechanism connects electronic box 2, in electronic box
Process output control weft selecting mechanism on select that latitude refers to flexible so that by be through at select latitude refer in different wefts feeding sword heads in.
Picking motion is driven using the conjugate cam driving or four-bar linkage driving of the prior art or six drive links or space four-bar linkage
Sword head sword belt moves back and forth wefting insertion and realizes weft transfer.
Numerical control reed move looping beating-up mechanism 4 using numerical control fluffing servo motor connection electronic box control reed looping number and
Looping hair Gao great little.Numerical control reed moves looping beating-up mechanism 4 using the patented technology drop reed mechanism of towel machine of applicant's earlier application
(patent No.: ZL200910025654.9) or numerical control fly reed mechanism of towel machine (patent No.: ZL200910217131.4) or numerical control
Cam control fulcrum sliding slot fluff mechanism (patent No.: ZL201210559088.1) is rotated, or is beaten using the looping of the prior art
The replacement of latitude structure.
Spooler 7 batches servo motor connection electronic box simultaneously using servo motor is batched through deceleration mechanism driving work beam
It is realized in real time by the coefficient operation set in technique by electronic box control with encoder on loom main shaft and becomes filling density weaving.
Numerical control bottom warp feeding mechanism 8, numerical control doup end let-off mechanism 9, numerical control through let-off mechanism 10 include numerical control servo
Motor, deceleration mechanism tension sensor, tension sense answer roller, elastic return mechanism, warp beam, and respective numerical control servo motor connects
Power-on box controls respective numerical control servo motor through respective speed reducer according to the measured value of tension sensor compared with setting value
Structure drives respective warp beam constant tension unwinding, to realize identical tension bottom warp feeding, the doup end warp let-off, the ground diameter warp let-off.Such warp let-off
Structure is referring to a kind of velveteen air-jet loom of applicant's earlier application patented technology (patent No.: warp let-off machine in 201710337670.6)
Structure or a kind of sheared towel loom (patent No.: let-off mechanism in 201711214769.3), or the identical tension using the prior art
The replacement of warp let-off structure.
The main motor that active force mechanism 11 is controlled by electronic box 2 is through deceleration mechanism driving spindle, or another be equipped with again is joined by electronic box
The clutch-brake biography for connecing control connects, and active force motor, which is controlled by electronic box according to process output, realizes that real-time speed change is weaved.
Strand, which knits heald frame, in the present invention can borrow general heald frame.
Claims (10)
1. a kind of safe automobile air bag flick flip lid in reinforcing rib fabric weaving machine, including electronic box, rack, numerical control twist loom structure,
Numerical control reed moves looping beating-up mechanism, electronic dobby shedding mechanism, picking motion, electronic weft selection mechanism, Wei Jian mechanism, looks for latitude machine
Structure, spooler, numerical control bottom warp feeding mechanism, numerical control doup end let-off mechanism, numerical control through let-off mechanism, active force mechanism,
Be characterized in that: the numerical control twists loom structure, including twists and knit guide rail, twists and knit heald frame, heald frame translation numerical control servomotor, gear reducer
Structure, eccentric rotor axis, limit sliding chutes plate, strand are knitted guide rail and are relatively arranged between shedding mechanism and the dynamic looping beating-up mechanism of numerical control reed
Loom frame on the inside of, two or more twist to knit heald frame and be individually directed to be limited in twist and knit in the parallel conductive track slot more than two of guide rail,
Strand knits heald frame two sides and guide-track groove slot bottom there are translational gap, and every strand knits heald frame lower part and borrows one group of electronic dobby respectively
Support mandrel is supported by the lifting rod structure in respective swing arm and borrows electronic dobby opening at left and right sides of shedding mechanism heald frame
It is in jacking condition that mechanism is socketed swing arm to drive elevating lever by broaching tool, and heald frame is arranged through attachment base in rack and translates numerical control servo electricity
Machine, heald frame translate numerical control servo motor and couple eccentric rotor axis one end after the deceleration of deceleration mechanism, and strand is knitted to be fixed on heald frame
Limit sliding chutes plate is knitted at left and right sides of heald frame two with hank and is supported and is fixed with limit on hinged cross-tie between elevating levers and slides
Frid, limit sliding chutes plate are equipped with vertical waist hole up and down, and the eccentric rotor axis other end passes through vertical waist hole and pushes limit in eccentric
Coulisse moves left and right state, and then drives hinged heald frame in lifting support while moving left and right；Numerical control twists heald frame in loom structure
It translates numerical control servo motor and couples electronic box, by electronic box according to setting technology controlling and process electronic dobby shedding mechanism through broaching tool, swing arm, liter
Drop bar, which drives to twist, knits heald frame up and down motion, while controlling heald frame translation numerical control servo motor and running simultaneously drive in loom real time execution
Dynamic strand is knitted heald frame and is moved left and right, and then realizes the strand weaving of warp thread.
2. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
Encoder is set on loom main shaft or on synchronously driven axis, and electronic box control heald frame translation numerical control servo motor is transported in real time in loom
Capable each latitude is knitted heald frame with or not with decoders-Synchronous operation driving strand and is moved left and right, and then realizes the strand of warp thread or do not twist and knit
Weaving.
3. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
The electro-magnetic signal portions connection electronic box of the electronic dobby shedding mechanism is simultaneously controlled by the output sequence of electronic box control broaching tool in turn
Twist the up and down motion sequence for knitting heald frame and common heald frame.
4. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
The weft selecting mechanism connects electronic box, select that latitude refers in the process output control weft selecting mechanism in electronic box flexible and then will be through at and select latitude
In different weft feeding sword heads in finger.
5. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
It is high using numerical control fluffing servo motor connection electronic box control reed looping number and looping hair that numerical control reed moves looping beating-up mechanism
Size.
6. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
The spooler batches servo motor connection electronic box and by electronic box using servo motor is batched through deceleration mechanism driving work beam
Control is realized by the coefficient operation set in technique in real time with encoder on loom main shaft becomes filling density weaving.
7. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
Numerical control bottom warp feeding mechanism, numerical control doup end let-off mechanism include to numerical control numerical control servo motor, deceleration through let-off mechanism
Mechanism tension sensor, tension sense answer roller, elastic return mechanism, warp beam, and respective numerical control servo motor is all connected with electronic box root
Respective numerical control servo motor is controlled compared with setting value according to the measured value of tension sensor to drive respectively through respective deceleration mechanism
From warp beam constant tension unwinding, to realize identical tension bottom warp feeding, the doup end warp let-off, the ground diameter warp let-off.
8. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
The main motor that the active force mechanism is controlled by electronic box is through deceleration mechanism driving spindle, or another be equipped with again is coupled control by electronic box
Clutch-brake biography connects, and active force motor, which is controlled by electronic box according to process output, realizes that real-time speed change is weaved.
9. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, it is characterized in that:
The sword head sword that the picking motion is driven using conjugate cam or four-bar linkage drives or six drive links or space four-bar linkage drive
Band moves back and forth wefting insertion and realizes weft transfer.
10. a kind of safe automobile air bag according to claim 1 flicks the reinforcing rib fabric weaving machine in flip lid, feature
Be: the strand knits heald frame and borrows general heald frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053057.0A CN109680389A (en) | 2019-01-21 | 2019-01-21 | A kind of safe automobile air bag flicks the reinforcing rib fabric weaving machine in flip lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053057.0A CN109680389A (en) | 2019-01-21 | 2019-01-21 | A kind of safe automobile air bag flicks the reinforcing rib fabric weaving machine in flip lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109680389A true CN109680389A (en) | 2019-04-26 |
Family
ID=66193497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910053057.0A Pending CN109680389A (en) | 2019-01-21 | 2019-01-21 | A kind of safe automobile air bag flicks the reinforcing rib fabric weaving machine in flip lid |
Country Status (1)
| Country | Link |
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| CN (1) | CN109680389A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717728A (en) * | 2022-05-20 | 2022-07-08 | 常州市赛嘉机械有限公司 | Full-automatic intelligent control system and control method for double-rapier loom |
| CN115074888A (en) * | 2022-07-14 | 2022-09-20 | 嘉兴市牛大科技有限公司 | Forming method for safety air bag mesh cloth |
| CN115074888B (en) * | 2022-07-14 | 2024-04-30 | 嘉兴市牛大科技有限公司 | Forming method for safety airbag mesh cloth |
-
2019
- 2019-01-21 CN CN201910053057.0A patent/CN109680389A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717728A (en) * | 2022-05-20 | 2022-07-08 | 常州市赛嘉机械有限公司 | Full-automatic intelligent control system and control method for double-rapier loom |
| CN115074888A (en) * | 2022-07-14 | 2022-09-20 | 嘉兴市牛大科技有限公司 | Forming method for safety air bag mesh cloth |
| CN115074888B (en) * | 2022-07-14 | 2024-04-30 | 嘉兴市牛大科技有限公司 | Forming method for safety airbag mesh cloth |
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