CN210029569U - Yarn guide with long service life applied to textile machinery - Google Patents
Yarn guide with long service life applied to textile machinery Download PDFInfo
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- CN210029569U CN210029569U CN201920931536.3U CN201920931536U CN210029569U CN 210029569 U CN210029569 U CN 210029569U CN 201920931536 U CN201920931536 U CN 201920931536U CN 210029569 U CN210029569 U CN 210029569U
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- yarn guide
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Abstract
The utility model discloses a yarn guide with long service life applied to textile machinery, which adopts an extrusion spring to ensure that a yarn guide wheel can automatically tension according to the tightness of yarn, and simultaneously, the tension force of the extrusion spring can be adjusted due to the matching of a threaded rod and a movable plate, thereby when the tension force of the yarn exceeds the elastic force range of the currently set extrusion spring, the movable plate is moved by meshing the threaded rod and the movable plate, thereby changing the lifting amount of the extrusion spring and further changing the elastic force range of the extrusion spring, ensuring the uniform stress of the utility model to the yarn, ensuring the tension degree and the quality of textile products, simultaneously, the utility model adopts the yarn guide wheel to avoid the friction between the yarn and the utility model, thereby prolonging the service life of the utility model, and the structures of a rotating block and a top plate to ensure the free rotation of the yarn guide wheel, can be guided by a plurality of angular directions, thereby ensuring the flexibility of the utility model.
Description
Technical Field
The utility model belongs to the technical field of textile machinery equipment; in particular to a yarn guide with long service life applied to textile machinery.
Background
In the field of textile machines, yarn guides are an essential auxiliary device, which is used primarily for guiding the direction of a yarn in order to guide the yarn to a specific processing device along a defined path. Existing yarn guides have tubular, loop and wheel configurations.
Tubular structure is direct promptly with the wire through the body, utilize the shape of body self to realize the guide to the yarn, the loop-type structure is then more nimble relative tubular structure, can the multi-angle direction guide, but no matter ring type or tubular, when the guide angle changes, all there is direct friction with the yarn, the improper easy yarn fracture or the unusual wearing and tearing that lead to of angle control, simultaneously in long-time use, because the friction of yarn makes the feed carrier by contacting the fracture with the yarn, thereby lead to the feed carrier to break and damage, lead to the feed carrier life-span to reduce. The wheel type structure, namely the guide wheel is adopted, compared with tubular type and ring type guide, the yarn is obviously not easy to wear, but the wheel type structure is usually large in size, and the guide wheel is fixed on the support frame and cannot move, so that the guide wheel is not flexible enough.
Meanwhile, the yarn guide needs to tension the yarn in the yarn guide process, so that the tightness of woven products is moderate, and the product quality is guaranteed, however, most of the existing yarn guides adopt support arms, the length of the support arms is fixed, only fixed tension force can be generated, the tension force cannot be changed according to the tightness change of the yarn, the existing yarn guides also adopt elastic steel wires to support and tension, when the tightness of the yarn exceeds the elastic range of the elastic steel wires, the elasticity of the yarn cannot guarantee stable yarn tightness, the yarn is stressed unevenly, the fluctuation range is large, and the tightness of the product is uneven.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applied to spinning machine's feed carrier that has a long service life to solve current feed carrier life-span weak, use dumb and support elastic force inhomogeneous, lead to weaving out the product elasticity inhomogeneous, the relatively poor technical problem of quality.
In order to achieve the purpose, the utility model provides a yarn guide with long service life applied to textile machinery, which comprises a bottom plate, an adjusting knob, a limiting clamping plate, an extrusion spring, a top plate, a rotating block, a connecting ring, a yarn guide wheel, a fixed supporting plate and a threaded rod, wherein two fixed supporting plates which are symmetrically distributed are fixedly arranged on the upper end surface of the bottom plate, the two fixed supporting plates are respectively positioned on two sides of the upper end surface of the fixed bottom plate, the lower end of the threaded rod is rotationally connected with the central position of the upper end surface of the bottom plate, the threaded rod is arranged between the two fixed supporting plates, the upper end of the threaded rod penetrates through a movable plate, the threaded rod is in threaded fit connection with the movable plate, the movable plate is horizontally placed between the two fixed supporting plates, the two end surfaces of the movable plate are both, the other end of the extrusion spring is connected with the lower end face of the top plate, the top plate is horizontally placed between the two fixed supporting plates, the two end faces of the top plate are both contacted with the two fixed supporting plates, the top plate is positioned on the upper side of the movable plate, the upper end face of the top plate is rotationally connected with the rotating block through a rotating shaft, the rotating block is fixedly connected with a connecting ring, a yarn guide wheel is arranged on the connecting ring, the yarn guide wheel is rotationally connected with the connecting ring through a rotating bearing, two sides of the two fixed supporting plates are both provided with limit clamping plates, the two limit clamping plates are symmetrically fixed on the upper end face of the bottom plate, the inner side walls of the two limit clamping plates are respectively contacted with the movable plate and the top plate, the movable plate and the top plate are both slidably connected with the limit clamping plates and the fixed supporting, the adjusting knob is in contact with the threaded rod;
the yarn guide wheel is a ball bearing, a circle of groove is formed in the outer side wall of the ball bearing, and the inner side wall of the ball bearing is fixed on the connecting ring.
Further, adjust knob includes knob, dwang and worm wheel, the worm wheel cover is on the dwang, the knob is fixed in dwang one and serves, on spacing cardboard lateral wall was located to the one end that the dwang did not have the knob, the other end penetrated another spacing cardboard lateral wall and stretched in the spacing cardboard outside, and was connected with adjust knob, the worm wheel is connected with threaded rod worm wheel cooperation.
Furthermore, the limiting clamping plate is a strip-shaped flat plate, a through groove is formed in the side face of the limiting clamping plate, and the through groove is located at one end of the side face.
Furthermore, the top plate comprises a limiting lug, a rotating shaft groove, a square plate and a limiting rod, the limiting lug is symmetrically fixed at the front end and the rear end of the square plate, the limiting rod is symmetrically fixed at the left end and the right end of the square plate, and the rotating shaft groove is formed in the upper end face of the square plate;
the limiting lug is arranged in the through groove on the side face of the limiting clamping plate and is in sliding fit with the through groove on the side face of the limiting clamping plate.
Further, the rotating block is a cube, a rotating shaft is fixed on the lower end face of the rotating block, the rotating shaft is arranged in the rotating shaft groove and is rotatably connected with the top plate, two side walls of the rotating block are fixedly connected with two ends of the connecting ring respectively, and the connecting ring is located at the upper end of the rotating block.
Furthermore, the fixed supporting plate is a strip-shaped flat plate, a limiting sliding groove is formed in the middle of the fixed supporting plate, sliding clamping grooves are symmetrically formed in two sides of the limiting sliding groove, and the limiting sliding groove and the sliding clamping grooves penetrate through the upper end face and the lower end face of the fixed supporting plate;
a limiting rod is connected in the limiting sliding groove in the fixed supporting plate in a sliding mode, and the limiting rod is matched with the limiting sliding groove.
Further, the movable plate includes the spacing lug of movable plate, removes dull and stereotyped and movable plate through-hole, it is flat horizontal square board to remove the dull and stereotyped, the spacing lug symmetry of movable plate is fixed in and removes the dull and stereotyped left and right sides, just respectively be equipped with two spacing lugs of movable plate on the side about removing the dull and stereotyped, the spacing lug of movable plate is located in the sliding groove on the fixed bolster, and is connected with sliding groove sliding fit, the movable plate through-hole is located and is removed dull and stereotyped up end central point and put, just the movable plate through-hole runs through and removes the dull and stereotyped, be equipped with the screw thread on the movable plate.
Further, the utility model discloses a working procedure and principle:
1) the utility model is fixed on the textile machinery through the bottom plate;
2) placing the yarn on a yarn guide wheel, rotating a rotating block so as to change the direction of the yarn guide wheel, and leading the yarn to a spinning head of a spinning machine accurately in a correct direction by the yarn guide wheel;
3) the top plate is pushed outwards by extruding the spring, so that the yarn placed on the yarn guide wheel is tensioned, and the yarn spinning tension degree is guaranteed;
4) when the yarn tension degree changes, the knob on the adjusting knob is twisted, the knob drives the worm wheel to rotate, the worm wheel is meshed with the threaded rod to drive the threaded rod to rotate, so that the movable plate meshed with the threaded rod is driven to move up and down, the compression amount of the extrusion spring fixedly connected with the movable plate is changed, the elastic force applied to the yarn guide wheel is changed, the tension force of the yarn on the yarn guide wheel is changed, the tension degree of the yarn guide wheel to the yarn is kept unchanged, and the tension degree of the yarn textiles is kept unchanged.
The utility model has the advantages that: the utility model adopts the extrusion spring to ensure that the yarn guide wheel can automatically tension according to the tightness of the yarn, meanwhile, the threaded rod is matched with the moving plate, so that the tension of the extrusion spring can be adjusted, so that when the tension of the yarn exceeds the elastic force range of the currently set extrusion spring, the movable plate moves through the meshing of the threaded rod and the movable plate, thereby changing the lifting amount of the extrusion spring, thereby changing the elastic range of the extrusion spring, ensuring the uniform stress of the utility model to the yarn, ensuring the tension degree and the quality of the textile product, simultaneously, the utility model adopts the yarn guide wheel to avoid the friction between the yarn and the utility model, thereby prolong the utility model discloses a life, the structure of rotatory piece and roof makes the yarn guide wheel can the free rotation, can the multi-angle direction guide, thereby guaranteed the utility model discloses a flexibility.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Figure 1 is a schematic view of the general structure of a yarn guide with a long life, applied to textile machines of the present invention;
figure 2 is a schematic structural view of an adjusting knob of a yarn guide with a long service life applied to a textile machine of the present invention;
figure 3 is a schematic structural view of a top plate of a yarn guide with a long service life applied to textile machinery;
figure 4 is a schematic view of the structure of a rotating block of a yarn guide with a long life, applied to textile machines;
figure 5 is a schematic view of the structure of a moving plate of a yarn guide with a long service life for textile machines of the present invention.
Detailed Description
Referring to fig. 1-5, a yarn guide with long service life for textile machinery comprises a bottom plate 1, an adjusting knob 2, a limiting clamping plate 3, an extruding spring 4, a top plate 5, a rotating block 6, a connecting ring 7, a yarn guide wheel 8, a fixed supporting plate 9 and a threaded rod 10, wherein two fixed supporting plates 9 are fixed on the upper end surface of the bottom plate 1 and are symmetrically distributed, the two fixed supporting plates 9 are respectively fixed on two sides of the upper end surface of the bottom plate 1, the lower end of the threaded rod 10 is rotatably connected to the central position of the upper end surface of the bottom plate 1, the threaded rod 10 is arranged between the two fixed supporting plates 9, the upper end of the threaded rod 10 penetrates through a movable plate 11, the threaded rod 10 is in threaded fit connection with the movable plate 11, the movable plate 11 is horizontally placed between the two fixed supporting plates 9, two end surfaces of the movable plate 11 are both contacted with the, the other end of the extrusion spring 4 is connected with the lower end face of the top plate 5, the top plate 5 is horizontally placed between the two fixed supporting plates 9, two end faces of the top plate 5 are in contact with the two fixed supporting plates 9, the top plate 5 is positioned on the upper side of the movable plate 11, the upper end face of the top plate 5 is rotationally connected with the rotating block 6 through a rotating shaft, the rotating block 6 is fixedly connected with a connecting ring 7, a yarn guide wheel 8 is arranged on the connecting ring 7, the yarn guide wheel 8 is rotationally connected with the connecting ring 7 through a rotating bearing, two fixed supporting plates 9 are provided with limit clamping plates 3 on two sides, the two limit clamping plates 3 are symmetrically fixed on the upper end face of the bottom plate 1, the inner side walls of the two limit clamping plates 3 are respectively in contact with the movable plate 11 and the top plate 5, the movable plate 11 and the top plate 5 are both in sliding connection with the limit clamping plates 3 and the, the adjusting knob 2 is in contact with the threaded rod 10.
The yarn guide wheel 8 is a ball bearing, a circle of groove is arranged on the outer side wall of the ball bearing, and the inner side wall of the ball bearing is fixed on the connecting ring 7.
As shown in fig. 2, the adjusting knob 2 includes a knob 21, a rotating rod 22 and a worm wheel 23, the worm wheel 23 is sleeved on the rotating rod 22, the knob 21 is fixed on one end of the rotating rod 22, one end of the rotating rod 22 without the knob 21 is arranged on the side wall of the limiting clamping plate 3, the other end penetrates through the side wall of the other limiting clamping plate 3 and extends to the outside of the limiting clamping plate 3, and is connected with the adjusting knob 2, and the worm wheel 23 is connected with the worm wheel and worm of the threaded rod 10 in.
Spacing cardboard 3 is the flat slab of rectangular shape, is equipped with logical groove on the 3 sides of spacing cardboard, and leads to the groove and be located one of this side and serve.
As shown in fig. 3, the top plate 5 includes a limiting protrusion 51, a rotating shaft groove 52, a square plate 53 and a limiting rod 54, the limiting protrusion 51 is symmetrically fixed at the front and rear ends of the square plate 53, the limiting rod 54 is symmetrically fixed at the left and right ends of the square plate 53, and the rotating shaft groove 52 is arranged on the upper end surface of the square plate 53.
The limiting lug 51 is arranged in the through groove on the side surface of the limiting clamping plate 3, and the limiting lug 51 is in sliding fit with the through groove on the side surface of the limiting clamping plate 3.
As shown in fig. 4, the rotating block 6 is a cube, a rotating shaft is fixed on the lower end surface of the rotating block 6, the rotating shaft is disposed in the rotating shaft groove 52 and is rotatably connected with the top plate 5, two side walls of the rotating block 6 are respectively fixedly connected with two ends of the connecting ring 7, and the connecting ring 7 is located at the upper end of the rotating block 6.
Fixed support plate 9 is the flat slab of rectangular shape, and fixed support plate 9 intermediate position is equipped with spacing spout, and spacing spout bilateral symmetry is equipped with the slip draw-in groove, and spacing spout and slip draw-in groove all run through fixed support plate 9 up-down terminal surface.
A limit rod 54 is slidably connected to the limit sliding groove of the fixed support plate 9, and the limit rod 54 is matched with the limit sliding groove.
As shown in fig. 5, the moving plate 11 includes a moving plate limiting protrusion 111, a moving plate 112 and a moving plate through hole 113, the moving plate 112 is a flat horizontal square plate, the moving plate limiting protrusions 111 are symmetrically fixed on left and right sides of the moving plate 112, two moving plate limiting protrusions 111 are respectively arranged on the left and right sides of the moving plate 112, the moving plate limiting protrusions 111 are arranged in sliding slots on the fixed support plate 9 and are connected with the sliding slots in a sliding fit manner, the moving plate through hole 113 is arranged at a central position of an upper end face of the moving plate 112, the moving plate through hole 113 penetrates through the moving plate 112, threads are arranged on an inner side wall of the moving plate through hole 113, and the.
The utility model discloses a working procedure and principle:
1) the utility model is fixed on the textile machinery through the bottom plate 1;
2) placing the yarn on the yarn guide wheel 8, rotating the rotary block 6, thereby changing the direction of the yarn guide wheel 8, and leading the yarn to the spinning head of the spinning machine accurately in a correct direction by the yarn guide wheel 8;
3) the top plate 5 is pushed outwards by extruding the spring 4, so that the yarn placed on the yarn guide wheel 8 is tensioned, and the yarn spinning tension is guaranteed;
4) when the yarn rate of tension changes, twist knob 21 on the adjust knob 2, knob 21 drives worm wheel 23 and rotates, worm wheel 23 meshes with threaded rod 10, drive threaded rod 10 and rotate, thereby drive the movable plate 11 with the threaded rod 10 meshing and reciprocate, thereby change the compression capacity with movable plate 11 fixed connection's extrusion spring 4, thereby change the elasticity that the guide wheel 8 received, thereby make the tensile force of the yarn on the guide wheel 8 change, thereby make the guide wheel 8 keep unchangeable rate of tension to the yarn, make the rate of tension of yarn fabrics unchangeable.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.
Claims (7)
1. A yarn guide with long service life applied to textile machinery comprises a bottom plate (1), an adjusting knob (2), a limiting clamping plate (3), an extrusion spring (4), a top plate (5), a rotating block (6), a connecting ring (7), a yarn guide wheel (8), fixed supporting plates (9) and a threaded rod (10), and is characterized in that the upper end face of the bottom plate (1) is fixedly provided with two symmetrically distributed fixed supporting plates (9), the two fixed supporting plates (9) are respectively positioned and fixed on two sides of the upper end face of the bottom plate (1), the lower end of the threaded rod (10) is rotatably connected to the central position of the upper end face of the bottom plate (1), the threaded rod (10) is arranged between the two fixed supporting plates (9), the upper end of the threaded rod (10) penetrates through a movable plate (11), and the threaded rod (10) is in threaded fit connection with the movable plate (11), the yarn guide device is characterized in that the movable plate (11) is horizontally placed between two fixed supporting plates (9), two end faces of the movable plate (11) are in contact with the two fixed supporting plates (9), the upper end face of the movable plate (11) is fixedly connected with one end of an extrusion spring (4), the other end of the extrusion spring (4) is connected with the lower end face of the top plate (5), the top plate (5) is horizontally placed between the two fixed supporting plates (9), two end faces of the top plate (5) are in contact with the two fixed supporting plates (9), the top plate (5) is located on the upper side of the movable plate (11), the upper end face of the top plate (5) is rotatably connected with the rotating block (6) through a rotating shaft, a connecting ring (7) is fixedly connected onto the rotating block (6), a yarn guide wheel (8) is arranged on the connecting ring (7), and the yarn guide wheel (8) is rotatably connected with the, the two sides of the two fixed supporting plates (9) are respectively provided with a limiting clamping plate (3), the two limiting clamping plates (3) are symmetrically fixed on the upper end surface of the bottom plate (1), the inner side walls of the two limiting clamping plates (3) are respectively contacted with the movable plate (11) and the top plate (5), the movable plate (11) and the top plate (5) are respectively connected with the limiting clamping plates (3) and the fixed supporting plates (9) in a sliding manner, the adjusting knob (2) is rotatably connected between the two limiting clamping plates (3), one end of the adjusting knob (2) penetrates through the limiting clamping plates (3) and is arranged on the outer sides of the limiting clamping plates (3), and the adjusting knob (2) is contacted with the threaded rod (10);
the yarn guide wheel (8) is a ball bearing, a circle of groove is formed in the outer side wall of the ball bearing, and the inner side wall of the ball bearing is fixed on the connecting ring (7).
2. The yarn guide with the long service life applied to the textile machinery is characterized in that the adjusting knob (2) comprises a knob (21), a rotating rod (22) and a worm wheel (23), the worm wheel (23) is sleeved on the rotating rod (22), the knob (21) is fixed at one end of the rotating rod (22), one end of the rotating rod (22) without the knob (21) is arranged on the side wall of the limiting clamping plate (3), the other end of the rotating rod penetrates through the side wall of the other limiting clamping plate (3) to extend out of the limiting clamping plate (3) and is connected with the adjusting knob (2), and the worm wheel (23) is connected with the worm wheel and the worm of the threaded rod (10) in a matched mode.
3. A yarn carrier with a long life for textile machines according to claim 1, characterized in that the limiting plate (3) is a flat plate with an elongated shape, and the side of the limiting plate (3) is provided with a through slot at one end of the side.
4. The yarn guide with the long service life applied to the textile machinery is characterized in that the top plate (5) comprises a limiting lug (51), a rotating shaft groove (52), a square plate (53) and a limiting rod (54), the limiting lug (51) is symmetrically fixed at the front end and the rear end of the square plate (53), the limiting rod (54) is symmetrically fixed at the left end and the right end of the square plate (53), and the rotating shaft groove (52) is arranged on the upper end face of the square plate (53);
the limiting lug (51) is arranged in the through groove on the side face of the limiting clamping plate (3), and the limiting lug (51) is in sliding fit with the through groove on the side face of the limiting clamping plate (3).
5. The yarn guide with long service life applied to textile machinery according to claim 1, wherein the rotating block (6) is a cube, a rotating shaft is fixed on the lower end face of the rotating block (6), the rotating shaft is arranged in a rotating shaft groove (52) and is rotatably connected with the top plate (5), two side walls of the rotating block (6) are respectively fixedly connected with two ends of the connecting ring (7), and the connecting ring (7) is positioned at the upper end of the rotating block (6).
6. The yarn carrier with long service life applied to textile machinery according to claim 1, wherein the fixed support plate (9) is a long-strip flat plate, a limit sliding chute is arranged in the middle of the fixed support plate (9), sliding clamping grooves are symmetrically arranged on two sides of the limit sliding chute, and the limit sliding chute and the sliding clamping grooves penetrate through the upper end face and the lower end face of the fixed support plate (9);
a limiting rod (54) is connected to the limiting sliding groove in the fixed supporting plate (9) in a sliding mode, and the limiting rod (54) is matched with the limiting sliding groove.
7. The yarn carrier with long service life applied to textile machinery according to claim 1, wherein the moving plate (11) comprises a moving plate limiting lug (111), a moving plate (112) and a moving plate through hole (113), the moving plate (112) is a flat horizontal square plate, the moving plate limiting lugs (111) are symmetrically fixed on the left and right sides of the moving plate (112), two moving plate limiting lugs (111) are respectively arranged on the left and right sides of the moving plate (112), the moving plate limiting lugs (111) are arranged in sliding clamping grooves on the fixed support plate (9) and are connected with the sliding clamping grooves in a sliding fit manner, the moving plate through hole (113) is arranged at the central position of the upper end surface of the moving plate (112), the moving plate through hole (113) penetrates through the moving plate (112), threads are arranged on the inner side wall of the moving plate through hole (113), the threads cooperate with threads on the threaded rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931536.3U CN210029569U (en) | 2019-06-20 | 2019-06-20 | Yarn guide with long service life applied to textile machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931536.3U CN210029569U (en) | 2019-06-20 | 2019-06-20 | Yarn guide with long service life applied to textile machinery |
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| Publication Number | Publication Date |
|---|---|
| CN210029569U true CN210029569U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920931536.3U Expired - Fee Related CN210029569U (en) | 2019-06-20 | 2019-06-20 | Yarn guide with long service life applied to textile machinery |
Country Status (1)
| Country | Link |
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| CN (1) | CN210029569U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112602945A (en) * | 2020-12-16 | 2021-04-06 | 闵军 | Machine of sugarcane is washd to rotation type |
| CN113620113A (en) * | 2021-08-19 | 2021-11-09 | 武汉裕鹏激光科技有限公司 | Quick stable form optical fiber coiling device |
| CN115180456A (en) * | 2022-06-23 | 2022-10-14 | 泰安市港鑫毛纺织有限公司 | Spinning rack for textile production and capable of avoiding yarn winding and knotting |
-
2019
- 2019-06-20 CN CN201920931536.3U patent/CN210029569U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112602945A (en) * | 2020-12-16 | 2021-04-06 | 闵军 | Machine of sugarcane is washd to rotation type |
| CN113620113A (en) * | 2021-08-19 | 2021-11-09 | 武汉裕鹏激光科技有限公司 | Quick stable form optical fiber coiling device |
| CN113620113B (en) * | 2021-08-19 | 2023-02-24 | 武汉裕鹏激光科技有限公司 | Quick and stable type optical fiber winding device |
| CN115180456A (en) * | 2022-06-23 | 2022-10-14 | 泰安市港鑫毛纺织有限公司 | Spinning rack for textile production and capable of avoiding yarn winding and knotting |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210620 |