CN110284245B - Yarn tensioning mechanism for jacquard loom - Google Patents
Yarn tensioning mechanism for jacquard loom Download PDFInfo
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- CN110284245B CN110284245B CN201910557493.1A CN201910557493A CN110284245B CN 110284245 B CN110284245 B CN 110284245B CN 201910557493 A CN201910557493 A CN 201910557493A CN 110284245 B CN110284245 B CN 110284245B
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- rod
- connecting rod
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- mounting rod
- warp
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/12—Controlling warp tension by means other than let-off mechanisms
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Abstract
The invention discloses a yarn tensioning mechanism for a jacquard loom, which relates to the technical field of textile equipment and comprises an installation rod arranged on a frame of the jacquard loom, wherein a plurality of limiting pieces are arranged on the installation rod side by side along the axial direction, each limiting piece comprises a hook-shaped limiting part and a connecting rod fixedly connected to one end of the limiting part, the connecting rod is connected with the installation rod in a sliding manner, and the limiting part is positioned above the installation rod. The yarn tensioning mechanism can keep the warp yarns in a tensioning state, and reduces the occurrence of non-broken yarn halt phenomenon.
Description
Technical Field
The invention relates to the technical field of textile equipment, in particular to a yarn tensioning mechanism for a jacquard loom.
Background
When weaving, a loom typically weaves a desired piece of cloth from a wide variety of warp yarns. In the traditional process, especially for yarn weaving, silk weaving and wool weaving, due to the complex fabric structure, large warp density, various varieties and complex drawing-in process, each cycle can reach hundreds of yarns. When the loom works, the warp yarns are fine and are easy to break in the weaving process of the loom. After the warp yarn is broken, the loom is still in continuous weaving, so that the broken part of the warp yarn is not woven, the whole product has flaws, and the yield of the product is greatly reduced.
Patent document CN208533034U discloses a warp stop device of a jacquard, which comprises a warp stop frame, a warp stop strip is fixedly arranged on the warp stop frame, a warp stop sheet is arranged on the warp stop strip in a penetrating manner, warp yarns are arranged on the warp stop strip in a penetrating manner, a control device is connected to the warp stop strip through a lead, and the control device is connected with a conductive device positioned below the warp stop sheet through a lead.
When the jacquard warp stopping device works, the warp supports the dropper to suspend the dropper, when the warp is broken, the dropper falls under the action of self gravity to enable the dropper to be abutted against the dropper, meanwhile, the lower end of the dropper is abutted against the conducting device, the control device, the dropper and the conducting device form a conducting path, the control device sends a signal to stop the jacquard, and then the broken warp is processed.
The stop process of the jacquard machine is realized by mainly depending on a conductive path formed by the control device, the warp stop strip and the conductive device when the warp is broken. In actual work, however, the tension of the warp yarns is changed due to the fact that cop yarns are wound in an empty mode or the yarn feeding amount is changed when the warp yarns are laid; when the warp is loose, the height of the warp stopping sheet supported by the warp is reduced, so that the warp stopping sheet is easy to collide with the conductive device, the non-broken shutdown phenomenon occurs, and the normal production work is influenced.
Disclosure of Invention
The invention aims to provide a yarn tensioning mechanism for a jacquard loom, which can keep warp yarns in a tensioning state and reduce the occurrence of non-broken yarn stop phenomenon.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a yarn straining device for jacquard loom, is including installing the installation pole in the jacquard loom frame, be provided with a plurality of locating parts along the axial side by side on the installation pole, the locating part includes the spacing portion of crotch form and the connecting rod of rigid coupling in spacing portion one end, the connecting rod slides with the installation pole and is connected, spacing position is in the top of installation pole.
By adopting the technical scheme, when the loose warp yarns appear, the warp yarns are wound under the limiting part, and the part of the warp yarns between the limiting roller and the guide roller is pulled downwards by the self weight of the limiting part, so that the warp yarns are still in a tensioning state between the limiting roller and the warp stopping device, the supporting force of the warp yarns on the warp stopping sheet is ensured, and the problem of non-broken yarn stopping is solved.
The invention is further configured to: the lower extreme of connecting rod sets firmly the baffle, still overlaps on the connecting rod to be equipped with compression spring, compression spring upper end supports to press on the installation pole, the lower extreme supports to press on the baffle.
By adopting the technical scheme, the tension and the friction force brought by the warp yarns are overcome by utilizing the elasticity of the compression spring and the gravity of the limiting part, so that the limiting part can stably strain the warp yarns, the stability of the warp yarns during wiring is improved, and the smoothness of the jacquard loom during working is ensured.
The invention is further configured to: the outer surface of the rod body of the connecting rod is provided with adjusting grooves distributed along the axis, one end of each adjusting groove, which is far away from the limiting part, is provided with a fixing groove along the circumferential direction, and the fixing grooves are communicated with the adjusting grooves; the adjusting piece comprises a connecting ring and two pressure rods symmetrically and fixedly connected to the outer ring surface of the connecting ring, the inner diameter of the connecting ring is matched with the outer diameter of the connecting rod, and a sliding block is arranged on the inner ring surface of the connecting ring and is in sliding fit with the adjusting groove; the compression bar is positioned below the mounting rod, and the upper end of the compression spring is pressed on the compression bar.
By adopting the technical scheme, after the limiting piece is hooked on the warp yarns, if the upper end of the adjusting groove is positioned in the through hole of the mounting rod, the adjusting piece is pressed against the lower surface of the mounting rod, the elastic force of the compression spring acts between the adjusting piece and the baffle plate, and at the moment, the limiting piece tensions the warp yarns through the self gravity and the elastic force of the spring; when the sliding block slides downwards in the adjusting groove, the compression spring is pressed by the compression rod of the adjusting piece, and the sliding block horizontally rotates after sliding to the lower end of the adjusting groove, so that the sliding block moves into the fixing groove, the clamping fit of the adjusting piece and the connecting rod is realized, and the compression spring is kept in a pressed state; at the moment, the limiting piece only depends on gravity to tension the warp, so that whether the elastic force of the compression spring acts on the limiting piece can be manually controlled.
The invention is further configured to: the bottom of the adjusting groove gradually rises from one end close to the fixed groove to one end far away from the fixed groove until the bottom of the adjusting groove is in smooth transition with the outer wall of the connecting rod; the slider can slide along the connecting ring in the radial direction.
The invention is further configured to: the whole sliding block is T-shaped and comprises a connecting part and a fixing part vertically arranged in the middle of the connecting part; the spacing ring is inside to be seted up and to supply the chamber that holds that the slider slided, set up on the intrados with hold the opening of chamber intercommunication, the slider is located and holds the intracavity, it orders about the fixed part and wears out open-ended drive spring still to be provided with in the chamber to hold.
By adopting the technical scheme, when the sliding block is in the fixed groove, a gap exists between the sliding block and the outer wall of the connecting rod, the sliding block penetrates out of the opening under the action of the driving spring and is clamped and matched with the fixed groove, and meanwhile, the compression spring is kept in a pressing state; when the limiting piece needs to be matched with a compression spring, the adjusting piece is rotated to transfer the sliding block into the adjusting groove, and then the adjusting piece automatically slides upwards under the action of the compression spring until the adjusting piece slides out of the adjusting groove and is pressed on the lower surface of the mounting rod; the slider is in the regulating part slip in-process, receives the extrusion of connecting rod outer wall to retract gradually to holding in the chamber. So make the conversion process of whether the elasticity of compression spring acts on the locating part more smooth.
The invention is further configured to: the mounting rod is detachably connected with the rack.
The invention is further configured to: two strip-shaped fixing holes are symmetrically formed in the machine frame opposite to the end part of the mounting rod, and the fixing holes are vertically formed; the inner side wall of each fixing hole is obliquely and downwards provided with a plurality of hanging holes which are uniformly distributed along the vertical direction; hanging rods are fixedly arranged at two ends of the mounting rod.
Through adopting above-mentioned technical scheme, when the distance of installation pole and locating part and warp is not matchd, pull down the installation pole, then hang the peg in the hole that articulates of corresponding height, realize the height adjustment of installation pole to coordinate the interval between locating part and the warp.
The invention is further configured to: and a wear-resistant ring is fixedly embedded in the inner arc surface of the limiting part.
Through adopting above-mentioned technical scheme, spacing portion contradicts with the warp, and the removal of warp makes it comparatively serious with the wearing and tearing of spacing portion department of contradicting, and wear-resisting ring can reduce the warp to the wearing and tearing of spacing portion, can reduce the wearing and tearing of spacing portion to the warp simultaneously, improves and weaves the quality, and the reduction warp fracture condition takes place.
In conclusion, the invention has the following beneficial effects:
1. by arranging the yarn tensioning mechanism, the tensioning mechanism acts on the loose warp yarns to keep the warp yarns in a tensioning state, so that the supporting force of the warp yarns on the warp stopping sheet is ensured, and the problem of non-broken yarn shutdown is solved;
2. the compression spring is arranged on the limiting part, so that the limiting part can tension the warp yarns in combination with the elasticity of the spring, the stability of the warp yarns during wiring is improved, and the smoothness of the jacquard loom during working is ensured;
3. the regulating piece is arranged on the limiting piece, so that whether the elastic force of the compression spring acts on the limiting piece or not is manually controlled by the regulating piece, the pulling force of the limiting piece on the warp can be freely switched, and the stability of the warp during wiring is improved;
4. the installation rod is set to be height-adjustable, so that the spacing between the limiting part and the warp yarns can be coordinated, and the applicability of the limiting part is improved.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is a schematic structural view of a yarn tension mechanism in the embodiment;
FIG. 3 is a schematic structural diagram of an embodiment of a position-limiting member;
fig. 4 is a schematic structural view of an adjusting member in the embodiment.
In the figure, 1, a yarn tensioning mechanism; 2. mounting a rod; 21. a hanging rod; 3. a limiting member; 31. a limiting part; 32. a connecting rod; 33. a baffle plate; 34. an adjustment groove; 35. fixing grooves; 4. a compression spring; 5. an adjustment member; 51. a connecting ring; 52. a pressure lever; 53. an accommodating chamber; 54. a drive spring; 6. a slider; 61. a connecting portion; 62. a fixed part; 7. a frame; 71. a fixing hole; 72. hanging holes; 8. a take-up mechanism; 81. a cloth rolling shaft; 82. a limiting roller; 83. a guide roller; 9. a warp stop device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a yarn tensioning mechanism for a jacquard loom is characterized in that a frame 7 of the jacquard loom is provided with a winding mechanism 8 and a warp stop device 9, the winding mechanism 8 comprises a cloth winding shaft 81, the front end of the cloth winding shaft 81 is provided with a limiting roller 82, and a guide roller 83 is arranged below the limiting roller 82 and between the limiting roller 82 and the cloth winding shaft 81. The warp stopping device 9 is positioned at the front end of the limiting roller 82, and warp yarns penetrating through the warp stopping device 9 bypass the limiting roller 82 and the guide roller 83 and are wound on the cloth winding shaft 81; the yarn tensioning mechanism 1 is also mounted on the frame 7.
As shown in fig. 2, the yarn tensioning mechanism 1 includes a mounting bar 2, and the mounting bar 2 is coaxially fixed below the limit roller 82 (see fig. 1) and horizontally located between the limit roller 82 and the guide roller 83. A plurality of limiting parts 3 are arranged on the mounting rod 2 side by side along the axial direction, each limiting part 3 comprises a hook-shaped limiting part 31 and a connecting rod 32 coaxially and fixedly connected to one end of the limiting part 31, and each connecting rod 32 is a round rod. A through hole is formed in the body of the mounting rod 2 in a penetrating manner along the radial direction, and the connecting rod 32 penetrates through the through hole and is in sliding fit with the through hole, so that the limiting part 3 is connected with the mounting rod 2 in a sliding manner; the limiting part 31 is positioned above the mounting rod 2, and a wear-resistant ring is embedded and fixed on the inner cambered surface of the limiting part.
When loose warp yarns occur, the warp yarns bypass below the limiting part 31, the part of the warp yarns, which is positioned between the limiting roller 82 and the guide roller 83, is pulled downwards through the self weight of the limiting part 3, the warp yarns are still in a tensioning state between the limiting roller 82 and the warp stopping device 9, the supporting force of the warp yarns on the warp stopping sheet is ensured, and the problem of non-broken yarn stopping is solved.
Each limiting part 3 is responsible for the tension of the warp in the area above the limiting part, the weight of the limiting part 3 is limited, when the warp hooked by the limiting part 3 reaches a certain amount, the warp can exert an upward pulling force on the limiting part 3, when the warp is wired, the friction force between the warp and the limiting part 3 breaks the balance between the pulling force and the gravity, the limiting part 3 is irregularly shaken, and the stability of the warp in wiring is influenced; as shown in fig. 3, a baffle 33 is horizontally and fixedly connected to the lower end of the connecting rod 32, a compression spring 4 is sleeved on the connecting rod 32, the upper end of the compression spring 4 is pressed against the lower surface of the mounting rod 2, and the lower end of the compression spring is pressed against the upper surface of the baffle 33; the tension and friction force brought by the warp yarns are overcome by utilizing the elasticity of the compression spring 4 and the gravity of the limiting part 3, so that the limiting part 3 can stably tension the warp yarns, the stability of the warp yarns during wiring is improved, and the smoothness of the jacquard loom during working is ensured.
Further, as shown in fig. 2, 3 and 4, an adjusting part 5 is arranged on the connecting rod 32, the adjusting part 5 is connected with the connecting rod 32 in a sliding manner and can be clamped on the connecting rod 32, the compression spring 4 is positioned between the adjusting part 5 and the baffle 33, and the adjusting part 5 can press the compression spring 4, so that whether the elastic force of the compression spring 4 acts on the limiting part 3 or not can be manually controlled; specifically, an adjusting groove 34 and a fixing groove 35 which are distributed in an L shape are formed in the body of the connecting rod 32, wherein the adjusting groove 34 is distributed along the axial direction of the connecting rod 32, the fixing groove 35 is located at one end of the adjusting groove 34 far away from the limiting part 31 and distributed along the circumferential direction of the connecting rod 32, and the fixing groove 35 is communicated with the adjusting groove 34; when the limiting part 31 of the limiting member 3 is pressed against the upper surface of the mounting rod 2, a distance is left between the upper end of the adjusting groove 34 and the lower surface of the mounting rod 2. The adjusting piece 5 comprises a connecting ring 51 and two pressure rods 52 symmetrically fixedly connected to the outer ring surface of the connecting ring 51, and the inner diameter of the connecting ring 51 is matched with the outer diameter of the connecting rod 32; a slider 6 is provided on the inner circumferential surface of the connection ring 51, and the slider 6 can slide arbitrarily in the adjustment groove 34 and the fixing groove 35.
After the limiting piece 3 is hooked on the warp, if the upper end of the adjusting groove 34 is located in the through hole of the mounting rod 2, the adjusting piece 5 is pressed against the lower surface of the mounting rod 2, the elastic force of the compression spring 4 acts between the adjusting piece 5 and the baffle 33, and at the moment, the limiting piece 3 tensions the warp through the self gravity and the elastic force of the spring; when the sliding block 6 slides downwards in the adjusting groove 34, the compression spring 4 is pressed by the compression rod 52 of the adjusting piece 5, and the sliding block 6 horizontally rotates after sliding to the lower end of the adjusting groove 34, so that the sliding block 6 moves into the fixing groove 35, the adjusting piece 5 is clamped and matched with the connecting rod 32, and the compression spring 4 is kept in a pressed state; at this time, the stopper 3 performs the tensioning operation on the warp yarn by gravity alone.
In order to make the elastic force of the compression spring 4 act on the limiting member 3 to be converted more smoothly, the groove bottom of the adjusting groove 34 is gradually raised from the end close to the fixing groove 35 to the end far from the fixing groove 35 until the groove bottom is in smooth transition with the outer wall of the connecting rod 32, and the sliding block 6 is further arranged to be in sliding connection.
An accommodating cavity 53 is formed in the limiting ring, and an opening communicated with the accommodating cavity 53 is formed in the inner arc surface of the limiting ring; the slide block 6 is arranged into a T-shaped block and consists of a connecting part 61 and a fixing part 62 which is vertical to the middle position of the connecting part 61; the fixing portion 62 is disposed toward the opening after the slider 6 is located in the accommodating chamber 53. The accommodating cavity 53 is further provided with a driving spring 54, one end of the driving spring 54 is pressed against the inner wall of the accommodating cavity 53, and the other end is pressed against the side wall of the connecting part 61 departing from the fixing part 62. The elastic force of the drive spring 54 acts on the slider 6, pushing the slider 6 to move toward the opening of the accommodation chamber 53, and holding the fixing portion 62 in a state of passing out of the opening of the accommodation chamber 53.
With the arrangement, when the sliding block 6 is in the fixing groove 35, a gap exists between the sliding block 6 and the outer wall of the connecting rod 32, the sliding block 6 penetrates out of the opening under the action of the driving spring 54 and is in clamping fit with the fixing groove 35, and meanwhile, the compression spring 4 is kept in a pressed state; when the limiting part 3 needs to be matched with the compression spring 4, the adjusting part 5 is rotated, the sliding block 6 is rotated into the adjusting groove 34, then the adjusting part 5 automatically slides upwards under the action of the compression spring 4 until the adjusting groove 34 slides out to be pressed on the lower surface of the mounting rod 2, and the sliding block 6 is gradually retracted into the accommodating cavity 53 under the extrusion of the outer wall of the connecting rod 32 in the sliding process of the adjusting part 5.
In the process of routing, the situation that warp yarns are loosened every time is basically different, and in order to enable the adaptability of the tensioning mechanism to be higher, the mounting rod 2 and the jacquard loom frame 7 are detachably connected; as shown in fig. 1, a long fixing hole 71 is formed through the side wall of the frame 7 opposite to the end of the mounting rod 2, the length direction of the fixing hole 71 is vertically arranged, a plurality of hanging holes 72 are formed in the vertical inner wall of the fixing hole 71 along the vertical direction, one end of each hanging hole 72 far away from the fixing hole 71 is lower than one end close to the fixing hole 71, and the side wall of the frame 7 is penetrated through the hanging holes 72. Hanging rods 21 extend from both ends of the mounting rod 2.
When the distances between the installation rod 2 and the limiting member 3 and the warp are not matched, the installation rod 2 is detached, and then the hanging rod 21 is hung in the hanging hole 72 with the corresponding height, so that the height adjustment of the installation rod 2 is realized, and the interval between the limiting member 3 and the warp is coordinated.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a yarn straining device for jacquard loom which characterized in that: the jacquard weaving machine comprises a mounting rod (2) mounted on a jacquard weaving machine frame (7), wherein a plurality of limiting pieces (3) are arranged on the mounting rod (2) side by side along the axial direction, each limiting piece (3) comprises a hook-shaped limiting part (31) and a connecting rod (32) fixedly connected to one end of the limiting part (31), the connecting rod (32) is connected with the mounting rod (2) in a sliding manner, and the limiting part (31) is positioned above the mounting rod (2);
the lower end of the connecting rod (32) is fixedly provided with a baffle (33), the connecting rod (32) is further sleeved with a compression spring (4), the upper end of the compression spring (4) is pressed on the mounting rod (2), and the lower end of the compression spring is pressed on the baffle (33);
the outer surface of the rod body of the connecting rod (32) is provided with adjusting grooves (34) distributed along the axis, one end, far away from the limiting part (31), of each adjusting groove (34) is provided with a fixing groove (35) along the circumferential direction, and the fixing grooves (35) are communicated with the adjusting grooves (34); the adjusting piece (5) is connected with the connecting rod (32) in a sliding mode, the adjusting piece (5) comprises a connecting ring (51) and two pressure rods (52) symmetrically and fixedly connected to the outer ring surface of the connecting ring (51), the inner diameter of the connecting ring (51) is matched with the outer diameter of the connecting rod (32), a sliding block (6) is arranged on the inner ring surface of the connecting ring (51), and the sliding block (6) is in sliding fit with the adjusting groove (34); the compression rod (52) is positioned below the mounting rod (2), and the upper end of the compression spring (4) is pressed against the compression rod (52).
2. Yarn tensioning mechanism for jacquard loom according to claim 1, characterized in that: the bottom of the adjusting groove (34) gradually rises from one end close to the fixed groove (35) to one end far away from the fixed groove (35) until the bottom of the adjusting groove is in smooth transition with the outer wall of the connecting rod (32); the sliding block (6) can slide along the radial direction of the connecting ring (51).
3. Yarn tensioning mechanism for jacquard looms, according to claim 2, characterized in that: the sliding block (6) is integrally T-shaped and comprises a connecting part (61) and a fixing part (62) vertically arranged in the middle of the connecting part (61); the spacing ring is inside to be seted up and to supply chamber (53) that hold that slider (6) slided, set up on the intrados with hold the opening of chamber (53) intercommunication, slider (6) are located and hold chamber (53), it wears out open-ended drive spring (54) still to be provided with in chamber (53) to order about fixed part (62).
4. Yarn tensioning mechanism for jacquard loom according to claim 1, characterized in that: the mounting rod (2) is detachably connected with the rack (7).
5. Yarn tensioning mechanism for jacquard loom according to claim 4, characterized in that: two strip-shaped fixing holes (71) are symmetrically formed in the rack (7) opposite to the end part of the mounting rod (2), and the fixing holes (71) are vertically arranged; hanging holes (72) are formed in the inner side wall of the fixing hole (71) in an upward and downward mode, and a plurality of hanging holes (72) are uniformly distributed in the vertical direction; and hanging rods (21) are fixedly arranged at two ends of the mounting rod (2).
6. Yarn tensioning mechanism for jacquard loom according to claim 1, characterized in that: and a wear-resistant ring is fixedly embedded in the inner arc surface of the limiting part (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557493.1A CN110284245B (en) | 2019-06-25 | 2019-06-25 | Yarn tensioning mechanism for jacquard loom |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557493.1A CN110284245B (en) | 2019-06-25 | 2019-06-25 | Yarn tensioning mechanism for jacquard loom |
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| CN110284245A CN110284245A (en) | 2019-09-27 |
| CN110284245B true CN110284245B (en) | 2020-10-09 |
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| CN201910557493.1A Active CN110284245B (en) | 2019-06-25 | 2019-06-25 | Yarn tensioning mechanism for jacquard loom |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116219667A (en) * | 2023-05-09 | 2023-06-06 | 常州市广纺纺织品有限公司 | Tensioning device for textile fabric dyeing fabric |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4186549A (en) * | 1978-05-30 | 1980-02-05 | Wwg Industries, Inc. | Packaging of self-twist yarns |
| DE58901019D1 (en) * | 1988-07-08 | 1992-04-30 | Sulzer Ag | METHOD FOR CHAIN TENSION CONTROL AND WEAVING MACHINE WITH CHAIN TENSION ORGANS. |
| JP3202187B2 (en) * | 1997-11-13 | 2001-08-27 | 石川県 | Yarn tension adjusting device of weaving preparation machine |
| IT1308631B1 (en) * | 1999-02-24 | 2002-01-09 | Vamatex Nuova Spa | ADJUSTABLE FABRIC SUPPORT FOR WEAVING FRAMES. |
| CN202430416U (en) * | 2012-02-07 | 2012-09-12 | 澳帕曼织带（昆山）有限公司 | Pre-tensioning device for weaving machine |
| CN204508440U (en) * | 2014-12-26 | 2015-07-29 | 江苏兴达钢帘线股份有限公司 | A kind of outer around take-up arm of force takeup tension control apparatus |
| CN204875009U (en) * | 2015-07-14 | 2015-12-16 | 吴江新劲纺织有限公司 | Yarm for textile overspeed device tensioner |
| CN104975415A (en) * | 2015-07-14 | 2015-10-14 | 吴江新劲纺织有限公司 | Novel yarn tensioner used for textile use |
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