CN210260699U - Silk rewinding machine for artificial turf production - Google Patents

Silk rewinding machine for artificial turf production Download PDF

Info

Publication number
CN210260699U
CN210260699U CN201921079551.6U CN201921079551U CN210260699U CN 210260699 U CN210260699 U CN 210260699U CN 201921079551 U CN201921079551 U CN 201921079551U CN 210260699 U CN210260699 U CN 210260699U
Authority
CN
China
Prior art keywords
base
silk
supporting
motor
artificial turf
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.)
Active
Application number
CN201921079551.6U
Other languages
Chinese (zh)
Inventor
陈晨
吴国顺
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 Jinli Nanometer High Elastic Material Co ltd
Original Assignee
Zhangjiagang Jinli Nanometer High Elastic Material 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 Jinli Nanometer High Elastic Material Co ltd filed Critical Zhangjiagang Jinli Nanometer High Elastic Material Co ltd
Priority to CN201921079551.6U priority Critical patent/CN210260699U/en
Application granted granted Critical
Publication of CN210260699U publication Critical patent/CN210260699U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Road Paving Structures (AREA)

Abstract

The utility model discloses a silk machine that falls of artificial turf production usefulness, including the base, the positive right side of base is inlayed and is equipped with PLC controller and control switch, and the fixed mounting at base top has supporting mechanism, and supporting mechanism's middle part is provided with raw material cylinder, and the winding has artificial grass silk on the raw material cylinder, and the right side fixed mounting at base top has the backup pad, and the positive left side of backup pad is provided with tension sensor, and the positive right side of backup pad is provided with winding mechanism. The utility model discloses a set up tension sensor and detect the tension that artificial grass silk received, when tension is too big or undersize, the PLC controller passes through motor controller and motor driver to step motor signals, drives first lead screw through step motor and rotates, drives second stay tube and regulating wheel through first lead screw and rises or descend to change the tension that artificial grass silk fell silk and receive, and then prevent that tension is too big or undersize from influencing the effect of falling silk of artificial grass silk.

Description

Silk rewinding machine for artificial turf production
Technical Field
The utility model relates to a silk machine, specifically be a silk machine of falling of artificial turf production usefulness.
Background
With the continuous expansion of the application range of the artificial turf, people also put forward higher and higher requirements on the performance, the quality and the like of the artificial turf, and as a core material of the artificial turf, the performance of the artificial turf is directly influenced by the performance of the artificial turf.
The artificial turf needs to use the silk machine of falling to wind the artificial grass silk of big section of thick bamboo on a little section of thick bamboo in process of production, and current silk machine of falling when producing different varieties, has brought the difference of tension because of the gram weight difference of artificial grass silk, so can cause the size elasticity of bobbin inconsistent to can bring certain problem to the packing of grass silk. Therefore, the silk pouring machine for producing the artificial turf is provided by improving the silk pouring machine.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a silk machine that falls of artificial turf production usefulness, the on-line screen storage device comprises a base, PLC controller and control switch are inlayed on the right side of base front, the fixed mounting at base top has supporting mechanism, the middle part of supporting mechanism is provided with raw material cylinder, artificial grass silk has been twined on the raw material cylinder, the right side of base top is fixed mounting has the backup pad, the positive left side of backup pad is provided with tension sensor, the positive right side of backup pad is provided with winding mechanism, the top of base is provided with two auxiliary mechanism and a tension adjustment mechanism that are located between tension sensor and winding mechanism;
the tension adjusting mechanism comprises an adjusting wheel, a first supporting pipe, a stepping motor, a first screw rod and a second supporting pipe, wherein the top end of the second supporting pipe is fixedly connected with the adjusting wheel, the bottom end of the second supporting pipe is connected with the first supporting pipe in an inserting manner, the bottom of the first supporting pipe is fixedly connected with the top of the base, the stepping motor is fixedly arranged in the base, the top end of the stepping motor is fixedly connected with the first screw rod, and the top end of the first screw rod sequentially penetrates through the base and the second supporting pipe and extends into the second supporting pipe;
winding mechanism comprises fixing base, second lead screw, handle, fixture block, reel, protection casing and driving motor, protection casing fixed mounting is at the back of backup pad, driving motor fixed mounting is in the inside of protection casing, driving motor's output shaft fixedly connected with pivot, the other end of pivot run through the backup pad and extend to the front of backup pad and with the middle part fixed connection of fixing base, the both ends of second lead screw link to each other with the inner wall of fixing base both sides through the bearing respectively, the quantity of fixture block is two, two the one end of fixture block all with second lead screw threaded connection, two the other end of fixture block all runs through the fixing base and extends to the positive outside of fixing base.
As a preferred technical scheme of the utility model, supporting mechanism comprises two support frames, two cassettes and a connecting seat, two the bottom of support frame all with the top fixed connection of base, two the cassette is installed at the top of two support frames through the bolt respectively, the both ends of connecting seat are passed through the bearing and are linked to each other with two cassettes, the reel sets up on two fixture blocks, and the one side contact that the inner wall of reel and two fixture blocks kept away from mutually.
As a preferred technical scheme of the utility model, the bottom of first stay tube and the top fixed connection of base, the shape of second stay tube cross section is square, first lead screw is located the square of the inside one end fixedly connected with of second stay tube and second stay tube inside diameter looks adaptation.
As a preferred technical scheme of the utility model, the one end of second lead screw extend to the outside of fixing base one side and with handle fixed connection, the surface of handle is provided with anti-skidding line.
As an optimized technical scheme of the utility model, the divide into two parts of second lead screw, and the screw thread of second lead screw two parts revolves to the opposite direction.
As a preferred technical scheme of the utility model, complementary unit comprises support column and auxiliary wheel, the bottom of support column and the top fixed connection of base, the auxiliary wheel passes through the bearing setting on the top of support column.
As a preferred technical scheme of the utility model, driving motor and control switch electric connection, driving motor passes through control switch and external power supply electric connection.
As a preferred technical scheme of the utility model, step motor is external to have motor driver and machine controller, motor driver and machine controller electric connection, machine controller and PLC controller electric connection, PLC controller and tension sensor electric connection.
The utility model has the advantages that: the silk rewinding machine for the artificial turf production detects tension on the artificial turf by arranging the tension sensor, transmits the detected signal to the PLC, when the detected tension is overlarge, the PLC sends a signal to the stepping motor through the motor controller and the motor driver, the stepping motor drives the first screw rod to rotate, the second support pipe and the regulating wheel are driven to ascend through the first screw rod, so that the tension on the artificial turf is relieved, when the tension detected by the tension sensor is overlarge, the stepping motor drives the first screw rod to rotate, the second support pipe and the regulating wheel are driven to descend through the first screw rod, so that the tension on the artificial turf is increased, the silk rewinding effect of the artificial turf is prevented from being influenced by the overlarge tension or the undersize tension, the two clamping blocks are driven to be close to or far away from each other through the second screw rod, so that winding drums with different sizes can be fixed, thereby enabling the silk rewinding machine to be suitable for the silk rewinding requirements of winding drums with different sizes.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a filament winding machine for artificial turf production according to the present invention;
fig. 2 is a schematic top view of the filament winding machine for artificial turf production according to the present invention;
fig. 3 is a schematic view of a supporting plate of a thread rewinding machine for artificial turf production according to the present invention;
FIG. 4 is an enlarged schematic structural view of the yarn rewinding machine for artificial turf production according to the present invention at the position A;
fig. 5 is a schematic view of a system flow structure of the filament rewinding machine for artificial turf production according to the present invention.
In the figure: 1. a base; 2. a support frame; 3. a card holder; 4. a connecting seat; 5. a raw material barrel; 6. a support plate; 7. a tension sensor; 8. a support pillar; 9. an auxiliary wheel; 10. an adjustment wheel; 11. a first support tube; 12. a stepping motor; 13. a first lead screw; 14. a second support tube; 15. a fixed seat; 16. a second lead screw; 17. a handle; 18. a clamping block; 19. a reel; 20. a PLC controller; 21. a control switch; 22. a protective cover; 23. the motor is driven.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example (b): as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the utility model relates to a silk rewinding machine for artificial turf production, which comprises a base 1, wherein a PLC controller 20 and a control switch 21 are embedded on the right side of the front surface of the base 1, a supporting mechanism is fixedly installed on the top of the base 1, a raw material cylinder 5 is arranged in the middle of the supporting mechanism, artificial grass silk is wound on the raw material cylinder 5, a supporting plate 6 is fixedly installed on the right side of the top of the base 1, a tension sensor 7 is arranged on the left side of the front surface of the supporting plate 6, a winding mechanism is arranged on the right side of the front surface of the supporting plate 6, and two auxiliary mechanisms and a tension adjusting mechanism are arranged on the top of;
the tension adjusting mechanism comprises an adjusting wheel 10, a first supporting pipe 11, a stepping motor 12, a first screw rod 13 and a second supporting pipe 14, the top end of the second supporting pipe 14 is fixedly connected with the adjusting wheel 10, the bottom end of the second supporting pipe 14 is connected with the first supporting pipe 11 in an inserting manner, the bottom of the first supporting pipe 11 is fixedly connected with the top of the base 1, the stepping motor 12 is fixedly installed inside the base 1, the top end of the stepping motor 12 is fixedly connected with the first screw rod 13, and the top end of the first screw rod 13 sequentially penetrates through the base 1 and the second supporting pipe 14 and extends to the inside of the second supporting pipe 14;
winding mechanism is by fixing base 15, second lead screw 16, handle 17, fixture block 18, reel 19, protection casing 22 and driving motor 23 are constituteed, protection casing 22 fixed mounting is at the back of backup pad 6, driving motor 23 fixed mounting is in the inside of protection casing 22, driving motor 23's output shaft fixedly connected with pivot, the other end of pivot run through backup pad 6 and extend to backup pad 6 openly and with fixing base 15's middle part fixed connection, the both ends of second lead screw 16 link to each other with the inner wall of fixing base 15 both sides through the bearing respectively, fixture block 18's quantity is two, two fixture block 18's one end all with second lead screw 16 threaded connection, two fixture block 18's the other end all runs through fixing base 15 and extends to fixing base 15's the positive outside.
Wherein, supporting mechanism is by two support frames 2, two cassette 3 and a connecting seat 4 are constituteed, the bottom of two support frames 2 all with base 1's top fixed connection, two cassette 3 are respectively through the bolt mounting at the top of two support frames 2, the both ends of connecting seat 4 are passed through the bearing and are linked to each other with two cassette 3, reel 19 sets up on two fixture blocks 18, and the inner wall of reel 19 contacts with the one side that two fixture blocks 18 kept away from mutually, cartridge 5 sets up the surface at connecting seat 4, and be located between two support frames 2, when needs are dismantled cartridge 5, twist off the bolt of connecting cassette 3 and support frame 2 and can dismantle cartridge 5, thereby can change cartridge 5.
The bottom end of the first support pipe 11 is fixedly connected with the top of the base 1, the cross section of the second support pipe 14 is square, and one end, located inside the second support pipe 14, of the first screw rod 13 is fixedly connected with a square block matched with the inner diameter of the second support pipe 14, so that the second support pipe 14 can be prevented from rotating along with the first screw rod 13 and being incapable of rising.
Wherein, the one end of second lead screw 16 extend to the outside of fixing base 15 one side and with handle 17 fixed connection, the surface of handle 17 is provided with anti-skidding line, can make things convenient for the staff to rotate second lead screw 16 through setting up handle 17, and anti-skidding line can increase the frictional force between staff and the handle 17, reduces the condition that takes place the hand cunning when rotating handle 17.
The second screw rod 16 is divided into two parts, the thread turning directions of the two parts of the second screw rod 16 are opposite, and the two clamping blocks 18 can be close to or far away from each other when the second screw rod 16 rotates through the threads with the opposite turning directions of the two parts of the second screw rod 16.
Wherein, complementary unit comprises support column 8 and auxiliary wheel 9, and the bottom of support column 8 and base 1's top fixed connection, auxiliary wheel 9 pass through the bearing setting on the top of support column 8, and more steady when can make artificial grass silk process regulating wheel 10 through setting up support column 8 and auxiliary wheel 9, and then improve this rewinder's practicality.
The driving motor 23 is electrically connected with the control switch 21, the driving motor 23 is electrically connected with the external power supply through the control switch 21, the model applicable to the driving motor 23 is a 5IK120RGN-CF type driving motor, and the start and stop of the driving motor 23 can be controlled by setting the control switch 21.
The stepping motor 12 is externally connected with a motor driver and a motor controller, the motor driver is electrically connected with the motor controller, the motor controller is electrically connected with the PLC 20, the PLC 20 is electrically connected with the tension sensor 7, the applicable model of the stepping motor 12 is 110HCY160AL3S type, the applicable model of the motor controller is TPC8-8TD type controller, the applicable model of the motor driver is 8594 type driver, the applicable model of the tension sensor 7 is JZLH-3 type tension sensor, and the applicable model of the PLC 20 is LK3U-14MR type PLC controller.
When the automatic winding machine works, firstly, the winding drum 19 is placed on the two clamping blocks 18, then the handle 17 is rotated, the second screw rod 16 is driven to rotate by the handle 17, the two clamping blocks 18 are driven to rotate by the second screw rod 16, the surfaces, far away from each other, of the two clamping blocks 18 are in contact with the inner wall of the winding drum 19, so that the winding drum 19 is fixed, one end of the artificial grass filament on the raw material drum 5 is led out and penetrates through the tension sensor 7, the two auxiliary wheels 9 and the adjusting wheel 10 from left to right according to the figure 1, then the artificial grass filament is fixed on the winding drum 19, the external power supply of the winding machine is switched on, the driving motor 23 is driven to rotate by the control switch 21, at the moment, the driving motor 23 drives the fixing seat 15 to rotate by the rotating shaft, the winding drum 19 is driven to rotate by the fixing seat 15, the artificial grass filament is dragged and wound, when the artificial grass, and transmits the detected signal to the PLC controller 20, when the detected tension is too large, the PLC controller 20 sends a signal to the stepping motor 12 through the motor controller and the motor driver, the first screw rod 13 is driven to rotate through the stepping motor 12, the second support tube 14 and the adjusting wheel 10 are driven to ascend through the first screw rod 13, so as to slow down the tension applied to the artificial grass filaments when the detected tension is too small, the PLC controller 20 sends a signal to the stepping motor 12 through the motor controller and the motor driver, the first screw rod 13 is driven to rotate through the stepping motor 12, the second support tube 14 and the adjusting wheel 10 are driven to descend through the first screw rod 13, so as to slow down the tension applied to the artificial grass filaments when the detected tension is too small, thereby preventing the artificial grass filaments from being rewound due to being influenced by too large tension or too small tension, the power supply of the filament rewinding machine is disconnected after the completion of the filament rewinding, the handle 17 is rotated to separate the fixture block 18 from the, and then the reel 19 is removed.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The silk rewinding machine for artificial turf production comprises a base (1) and is characterized in that a PLC (programmable logic controller) and a control switch (21) are embedded in the right side of the front of the base (1), a supporting mechanism is fixedly mounted at the top of the base (1), a raw material barrel (5) is arranged in the middle of the supporting mechanism, artificial grass silk is wound on the raw material barrel (5), a supporting plate (6) is fixedly mounted on the right side of the top of the base (1), a tension sensor (7) is arranged on the left side of the front of the supporting plate (6), a winding mechanism is arranged on the right side of the front of the supporting plate (6), and two auxiliary mechanisms and a tension adjusting mechanism which are located between the tension sensor (7) and the winding mechanism are arranged at the top of the base (1);
the tension adjusting mechanism comprises an adjusting wheel (10), a first supporting pipe (11), a stepping motor (12), a first screw rod (13) and a second supporting pipe (14), the top end of the second supporting pipe (14) is fixedly connected with the adjusting wheel (10), the bottom end of the second supporting pipe (14) is connected with the first supporting pipe (11) in an inserting mode, the bottom of the first supporting pipe (11) is fixedly connected with the top of the base (1), the stepping motor (12) is fixedly installed inside the base (1), the top end of the stepping motor (12) is fixedly connected with the first screw rod (13), and the top end of the first screw rod (13) sequentially penetrates through the base (1) and the second supporting pipe (14) and extends into the second supporting pipe (14);
the winding mechanism consists of a fixed seat (15), a second screw rod (16), a handle (17), a fixture block (18), a winding drum (19), a protective cover (22) and a driving motor (23), the protective cover (22) is fixedly arranged on the back of the supporting plate (6), the driving motor (23) is fixedly arranged in the protective cover (22), the output shaft of the driving motor (23) is fixedly connected with a rotating shaft, the other end of the rotating shaft penetrates through the supporting plate (6), extends to the front of the supporting plate (6) and is fixedly connected with the middle part of the fixed seat (15), two ends of the second screw rod (16) are respectively connected with the inner walls of two sides of the fixed seat (15) through bearings, the number of the clamping blocks (18) is two, one end of each clamping block (18) is in threaded connection with the second screw rod (16), and the other end of each clamping block (18) penetrates through the fixed seat (15) and extends to the outside of the front face of the fixed seat (15).
2. The artificial turf production silk rewinding machine as claimed in claim 1, wherein the supporting mechanism is composed of two supporting frames (2), two clamping seats (3) and a connecting seat (4), the bottoms of the two supporting frames (2) are fixedly connected with the top of the base (1), the two clamping seats (3) are respectively mounted on the tops of the two supporting frames (2) through bolts, two ends of the connecting seat (4) are connected with the two clamping seats (3) through bearings, the winding drum (19) is arranged on the two clamping blocks (18), and the inner wall of the winding drum (19) is in contact with the surface, away from the two clamping blocks (18).
3. The artificial turf production used silk rewinding machine according to claim 1, characterized in that the bottom end of the first support tube (11) is fixedly connected with the top of the base (1), the cross section of the second support tube (14) is square, and the end of the first screw rod (13) inside the second support tube (14) is fixedly connected with a square block which is matched with the inner diameter of the second support tube (14).
4. The artificial turf production used silk rewinding machine as claimed in claim 1, characterized in that one end of said second screw (16) extends outside one side of the fixed base (15) and is fixedly connected with a handle (17), and the outer surface of said handle (17) is provided with anti-skid threads.
5. The machine for rewinding an artificial lawn production according to claim 1, characterized in that said second screw (16) is divided into two parts and the threads of the two parts of the second screw (16) are of opposite direction.
6. The artificial turf production used silk rewinding machine according to claim 1, characterized in that the auxiliary mechanism consists of a support column (8) and an auxiliary wheel (9), the bottom of the support column (8) is fixedly connected with the top of the base (1), and the auxiliary wheel (9) is arranged at the top end of the support column (8) through a bearing.
7. The filament rewinding machine for artificial turf production as claimed in claim 1, wherein said drive motor (23) is electrically connected to a control switch (21), and said drive motor (23) is electrically connected to an external power source through said control switch (21).
8. The silk rewinding machine for artificial turf production as claimed in claim 1, wherein said stepping motor (12) is externally connected with a motor driver and a motor controller, said motor driver is electrically connected with said motor controller, said motor controller is electrically connected with a PLC controller (20), and said PLC controller (20) is electrically connected with said tension sensor (7).
CN201921079551.6U 2019-07-11 2019-07-11 Silk rewinding machine for artificial turf production Active CN210260699U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921079551.6U CN210260699U (en) 2019-07-11 2019-07-11 Silk rewinding machine for artificial turf production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921079551.6U CN210260699U (en) 2019-07-11 2019-07-11 Silk rewinding machine for artificial turf production

Publications (1)

Publication Number Publication Date
CN210260699U true CN210260699U (en) 2020-04-07

Family

ID=70048550

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921079551.6U Active CN210260699U (en) 2019-07-11 2019-07-11 Silk rewinding machine for artificial turf production

Country Status (1)

Country Link
CN (1) CN210260699U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111573414A (en) * 2020-04-10 2020-08-25 江苏同欣化纤有限公司 Yarn guide device for spinning machine
CN112030327A (en) * 2020-09-14 2020-12-04 黄晶 Yarn tension regulating and controlling device of loom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111573414A (en) * 2020-04-10 2020-08-25 江苏同欣化纤有限公司 Yarn guide device for spinning machine
CN112030327A (en) * 2020-09-14 2020-12-04 黄晶 Yarn tension regulating and controlling device of loom
CN112030327B (en) * 2020-09-14 2021-11-16 丹阳市益讯机械有限公司 Yarn tension regulating and controlling device of loom

Similar Documents

Publication Publication Date Title
CN210260699U (en) Silk rewinding machine for artificial turf production
CN210657291U (en) Twisting frame of weaving usefulness
CN209427855U (en) A kind of automatic rewinder of more cylinder yarns
CN210655663U (en) Tightness adjusting mechanism of wire doubling machine
CN117088190A (en) Yarn winding system for blended cotton yarn and operation method thereof
CN208666657U (en) A kind of Macromolecular self-adhesive membrane waterproof roll wrap-up
CN219260443U (en) Yarn tension regulator for embroidery machine
CN106586695A (en) Density digital winding bobbin winder and application method thereof
CN210393103U (en) Winding device for warp knitting cloth production
CN212953467U (en) Conveniently-adjusted winding balloon fixing seat
CN212449837U (en) Servo motor deviation rectifying mechanism in rewinding device
CN206486107U (en) A kind of density big tube dyes bobbin-winding machine
CN109671535A (en) Automatic twisted wire cabling device and for its twisted wire stranding distance calculation method
CN209923530U (en) Top disc for two-for-one twister
CN217972039U (en) Pay-off device for flying weaving vamp production equipment
CN215666356U (en) Composite yarn tension adjusting device for automatic textile machinery
CN220617945U (en) Wire breakage preventing mechanism for rewinding machine
CN109834995A (en) A kind of angle adjustment device of paper tube shaper
CN216235277U (en) Automatic bobbin winder for spinning
CN219156161U (en) Tensioning degree auxiliary adjusting device
CN220519813U (en) Silk winder capable of giving alarm when wire breakage occurs
CN210824817U (en) Inverted take-up device for online replacement of take-up stand
CN212639295U (en) Eye-shade cloth blanking machine
CN217104236U (en) Mat grass handicraft jacquard device
CN218642029U (en) Automatic film rewinding tension adjusting device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant