CN111547577B - Cord constant force supply device of V-belt - Google Patents
Cord constant force supply device of V-belt Download PDFInfo
- Publication number
- CN111547577B CN111547577B CN202010313095.8A CN202010313095A CN111547577B CN 111547577 B CN111547577 B CN 111547577B CN 202010313095 A CN202010313095 A CN 202010313095A CN 111547577 B CN111547577 B CN 111547577B
- Authority
- CN
- China
- Prior art keywords
- pulley
- fixed pulley
- clamping
- swing arm
- clamping plates
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
- B65H59/06—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on material leaving the package
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/04—Carriers or supports for textile materials to be treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/35—Ropes, lines
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
The invention provides a constant-force wire rope supply device for a triangular belt, and belongs to the technical field of triangular belts. The triangular belt solves the problem that the tensile force of the thread rope is difficult to keep consistent in the production process of the existing strong layer of the triangular belt. The rope constant force supply device of the V-belt comprises a rack, a storage drum, a first fixed pulley, a second fixed pulley, a movable pulley and a self-adjusting swing arm, wherein the movable pulley is rotatably arranged at one end of the self-adjusting swing arm, an unlocking plate is fixedly arranged at the other end of the self-adjusting swing arm, a clamping device is arranged between the first fixed pulley and the storage drum, the clamping device comprises two clamp plates and a reset device for controlling the two clamp plates to be closed, the rope penetrates through a gap between the two clamp plates and can be clamped tightly by the two clamp plates, and the unlocking plate is inserted between the two clamp plates. The cotton rope constant force supply device of the V-belt can provide constant stretching force by utilizing the movable pulley and the balancing weight, and the consistency of the product quality of the strong layer is ensured.
Description
Technical Field
The invention belongs to the technical field of V-belts, and relates to a constant-force wire rope supply device of a V-belt.
Background
The ordinary rubber triangular belt is generally composed of a cloth wrapping layer, a stretching layer (top rubber), a strength layer (tensile layer), a compression layer (bottom rubber) and the like. The strength layer is a framework of the V-belt, the main types of the strength layer at present comprise polyester cords, polyester toughened palm fibers, aramid cords, gum-dipped cord fabrics and the like, the strength layer is used for bearing tensile stress and the like generated in the running process of the V-belt and is a main stress part in the transmission process of the V-belt.
The production process of the strength layer comprises the following steps: the cords pass through a rubber pool filled with liquid rubber and are sequentially rolled onto a front forming roller and a rear forming roller, so that the adjacent cords are mutually bonded by the liquid rubber in the rubber pool to form a cylindrical gumming strong line layer. The stable tensile strength of the wire rope needs to be kept when the wire rope is supplied so as to ensure the consistency of the tensile stress which can be borne by the whole rope, but the wire rope is difficult to realize at present and causes unstable product quality.
Disclosure of Invention
The invention aims to provide a supply device capable of providing constant stretching force when a reinforcing layer is remanufactured, aiming at the problem that the stretching force of a thread rope is difficult to keep consistent in the production process of the conventional reinforcing layer of a V-belt.
The purpose of the invention can be realized by the following technical scheme:
a cord constant force supply device of a triangular belt is characterized by comprising a rack, a storage reel, a first fixed pulley, a second fixed pulley, a movable pulley and a self-adjusting swing arm, wherein the first fixed pulley and the second fixed pulley are rotatably connected with the rack through a rotating shaft, a plurality of first pulley grooves which are arranged in parallel are formed in the periphery of the first fixed pulley, a plurality of second pulley grooves are formed in the periphery of the second fixed pulley, the number and the position of the first pulley grooves correspond to the second pulley grooves one by one, an extending section is arranged in the axial direction of the rotating shaft of the second fixed pulley, a third fixed pulley is rotatably arranged on the extending section, a plurality of third pulley grooves are formed in the periphery of the third fixed pulley, the middle part of the self-adjusting swing arm is rotatably connected with the rack through a swing arm shaft and is positioned below the first fixed pulley and the second fixed pulley, the movable pulley is rotatably arranged at one end of the self-adjusting swing arm, the other end of self-interacting swing arm is fixed with the unlocking plate, a plurality of fourth pulley grooves are formed in the periphery of the movable pulley, the number and the position of the fourth pulley grooves correspond to those of the third pulley grooves one by one, the cotton rope on the storage drum is led out after sequentially bypassing the first fixed pulley, the second fixed pulley, the movable pulley and the third fixed pulley, a clamping device is arranged between the first fixed pulley and the storage drum and comprises two clamping plates and a reset device for controlling the two clamping plates to close, the cotton rope penetrates through the gap between the two clamping plates and can be clamped by the two clamping plates, the unlocking plate is inserted between the two clamping plates, the thin section and the thick section with different thicknesses are arranged on the unlocking plate, and the clamping gap between the two clamping plates can be adjusted according to the different thicknesses of each part of the unlocking plate when the unlocking plate acts along with the self-interacting swing arm.
In the cord constant force supply device of the V-belt, the opposite surfaces of the inner sides of the two clamping plates are respectively provided with the clamping head, the clamping heads are provided with the plurality of U-shaped clamping strips, the plurality of clamping strips are arranged in a straight line at intervals, the clamping strips on the same clamping head face the same direction, the clamping strips on the two clamping heads face the opposite direction and are staggered in sequence, and a cord clamping channel for a cord to pass through is formed between the two clamping heads.
In the cord constant force supply device for the V-belt, the reset device is a torsion spring, one end of each of the two clamping plates is hinged, the torsion spring is arranged at the hinged point, and the other end of each of the two clamping plates has a tendency of being close to the joint under the elastic action of the torsion spring.
In the above cord constant force supplying apparatus for the v-belt, the unlocking plate is formed in a circular arc shape, and the thickness thereof gradually becomes thicker.
In the above constant-force cord feeding device for a triangular belt, the first pulley grooves and the second pulley grooves are four in number, and the third pulley grooves and the fourth pulley grooves are three in number.
In the above cord constant force supplying apparatus for the v-belt, the movable pulley is provided with a weight.
In the above cord constant force supplying apparatus of the v-belt, the weight block is connected to the movable pulley by the lifting cord.
In the above-described constant-force feeding apparatus for a cord of a v-belt, the size of the third fixed sheave is 1.2 to 3 times the size of the movable sheave.
Compared with the prior art, the cotton rope constant force feeding device of the V-belt can provide constant stretching force by utilizing the movable pulleys and the balancing weight, and the consistency of the product quality of the strong layer is ensured. The clamping device can cut off the supply in time when the wire rope is stopped, and the winding is prevented from being disordered. The plurality of pulley grooves provide enough friction resistance for the thread rope, and the tension of the thread rope is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the fitting of the cleat and the cord.
Fig. 3 is a schematic view of a cord passing through the chuck.
Fig. 4 is a schematic view of the structure of the chuck.
In the figure, 1, a frame; 2. a storage reel; 3. a first fixed pulley; 4. a second fixed pulley; 5. a third fixed pulley; 6. a movable pulley; 7. self-adjusting swing arms; 8. a first pulley groove; 9. a second pulley groove; 10. a third pulley groove; 11. a fourth pulley groove; 12. a cord; 13. a splint; 14. a chuck; 15. clamping strips; 16. an unlocking plate; 17. a balancing weight; 18. a lifting rope; 19. a limiting plate; 20. and a limiting baffle.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in figure 1, the constant-force wire rope supply device of the V-belt comprises a frame 1, a storage drum 2, a first fixed pulley 3, a second fixed pulley 4, a movable pulley 6 and a self-adjusting swing arm 7, wherein the storage drum 2, the first fixed pulley 3 and the second fixed pulley 4 are rotatably connected with the frame 1 through rotating shafts, the storage drum 2 is positioned at the lower part, and the first fixed pulley 3 and the second fixed pulley 4 are positioned at the upper part.
Four first pulley grooves 8 arranged in parallel are formed in the periphery of the first fixed pulley 3, four second pulley grooves 9 arranged in the same parallel are formed in the periphery of the second fixed pulley 4, and the number and the positions of the first pulley grooves 8 correspond to the second pulley grooves 9 one by one. The axis direction of the rotating shaft of the second fixed pulley 4 is outwards provided with an extending section, the extending section is rotatably provided with a third fixed pulley 5, and the periphery of the third fixed pulley 5 is provided with three third pulley grooves 10.
The middle part of self-interacting swing arm 7 is rotated through swing arm axle and frame 1 and is connected and be located the below of above-mentioned first fixed pulley 3 and second fixed pulley 4, and above-mentioned movable pulley 6 rotates the one end that sets up at self-interacting swing arm 7, is provided with balancing weight 17 on the movable pulley 6, and balancing weight 17 passes through lifting rope 18 and is connected with movable pulley 6. An unlocking plate 16 is fixedly arranged at the other end of the self-adjusting swing arm 7, three fourth pulley grooves 11 are formed in the periphery of the movable pulley 6, and the number and the positions of the fourth pulley grooves 11 correspond to those of the third pulley grooves 10 one by one. The size of the third fixed pulley 5 is 1.2 to 3 times that of the movable pulley 6.
The wire rope 12 on the storage drum 2 is led to the first fixed pulley 3, then alternately wound around the first fixed pulley 3 and a plurality of first pulley grooves 8 and second pulley grooves 9 on the second fixed pulley 4 in sequence and led to the movable pulley 6. Next, the wire rope 12 alternately passes through the plurality of third pulley grooves 10 and fourth pulley grooves 11 on the movable pulley 6 and the third fixed pulley 5, and finally is led out from one third pulley groove 10 on the outermost side of the third fixed pulley 5 for use by subsequent equipment.
A clamping device is arranged between the first fixed pulley 3 and the storage drum 2, the clamping device comprises two clamping plates 13 and a reset device for controlling the two clamping plates 13 to be closed, and the reset device is a torsion spring.
As shown in fig. 2, one end of each of the two clamping plates 13 is hinged, the torsion spring is arranged at the hinged point, and the other end of each of the two clamping plates 13 has a tendency of being close to the joint under the action of the elasticity of the torsion spring. The cord 12 passes through the gap between the two clamping plates 13 and can be clamped by the two clamping plates 13, the unlocking plate 16 is inserted between the two clamping plates 13, the unlocking plate 16 is provided with a thin section and a thick section with different thicknesses, and the clamping gap between the two clamping plates 13 can be adjusted according to the different thicknesses of each part of the unlocking plate 16 when the unlocking plate 16 moves along with the self-adjusting swing arm 7. The unlocking plate 16 is arc-shaped, the thickness of the unlocking plate is gradually increased, and the thinner end of the unlocking plate is always inserted between the two clamping plates 13.
As shown in fig. 3 and 4, the opposite surfaces of the inner sides of the two clamping plates 13 are respectively provided with a clamping head 14, the clamping head 14 is provided with a plurality of U-shaped clamping strips 15, the plurality of clamping strips 15 are arranged in a straight line at intervals, the clamping strips 15 on the same clamping head 14 face the same direction, the clamping strips 15 on the two clamping heads 14 face the opposite direction and are staggered in sequence, and a wire clamping channel for the wire rope 12 to pass through is formed between the two clamping heads 14.
The frame 1 is also provided with a limit plate 19, the upper end and the lower end of the limit plate 19 are respectively provided with a limit baffle 20, and the self-adjusting swing arm 7 is limited to swing between the two limit baffles 20.
When the wire rope winding machine is used, the wire rope 12 is manually led out, wound around the first fixed pulley 3, the second fixed pulley 4, the third fixed pulley 5 and the movable pulley 6 according to the winding mode and then led out, and is fixed with subsequent processing equipment, and the wire rope 12 is in a straightening state. At the moment, the tension force is insufficient, the movable pulley 6 is positioned at the lowest position under the action of self gravity and the configuration block, and the self-adjusting swing arm 7 is erected on the limiting baffle 20 at the lower end. After the processing equipment is started, the wire 12 is extracted, the pulling force on the wire 12 is increased, the initial feeding speed of the storage reel 2 is slower than the extraction speed of the terminal of the wire 12, the movable pulley 6 is pulled high, the distance between the movable pulley and the third fixed pulley 5 is shortened, and the original wire 12 between the movable pulley and the third fixed pulley compensates the feeding difference of the wire 12. As the movable pulley 6 is raised, since the size of the movable pulley 6 is significantly smaller than that of the third fixed pulley 5, the tension of the wire 12 is gradually increased in the case of the same weight, and is finally maintained at a stable equilibrium position, and the wire 12 is continuously supplied under constant tension. In the process, the self-adjusting swing arm 7 rotates anticlockwise as shown in the drawing, the unlocking plate 16 extends into the space between the clamping plates 13, the gap between the two clamping plates 13 is enlarged, and the wire rope 12 is ensured not to be clamped by the clamping plates 13 and the clamping heads 14.
When the processing equipment is stopped, the wire rope 12 is stopped being extracted, the storage reel 2 continues to supply for a period of time under the action of inertia, and the supply amount is larger than the taking amount, so that the wire rope 12 among the pulleys is loosened, and the tensile force is reduced. At this time, the movable pulley 6 and the counter weight 17 descend under the action of the self-weight, the redundant thread rope 12 is consumed, the certain tension of the thread rope 12 wound on the pulleys is kept, and the winding disorder is prevented. When the movable pulley 6 descends, the self-adjusting swing arm 7 rotates clockwise as shown in the figure, the unlocking plate 16 is pulled away from the clamping plates 13, the two clamping plates 13 are close to each other under the action of the resetting device, the clamping heads 14 are used for clamping the threaded rope 12, and the rope 12 is prevented from being continuously supplied to the pulley part.
Preferably, a position sensing switch is provided on the position limiting plate 19, so that when the self-adjusting swing arm 7 swings, a monitoring sensing is performed, and when the self-adjusting swing arm 7 moves along the pointer, a braking mechanism, such as a drum brake or a clutch brake, at the storage reel 2 controls the storage reel 2 to stop rotating, and the supply of the cord 12 to the subsequent pulley is stopped.
After restarting, the brake mechanism releases the brake and repeats the above process.
It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …".
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A cord constant force supply device of a triangular belt is characterized by comprising a rack, a storage reel, a first fixed pulley, a second fixed pulley, a movable pulley and a self-adjusting swing arm, wherein the first fixed pulley and the second fixed pulley are rotatably connected with the rack through a rotating shaft, a plurality of first pulley grooves which are arranged in parallel are formed in the periphery of the first fixed pulley, a plurality of second pulley grooves are formed in the periphery of the second fixed pulley, the number and the position of the first pulley grooves correspond to the second pulley grooves one by one, an extending section is arranged in the axial direction of the rotating shaft of the second fixed pulley, a third fixed pulley is rotatably arranged on the extending section, a plurality of third pulley grooves are formed in the periphery of the third fixed pulley, the middle part of the self-adjusting swing arm is rotatably connected with the rack through a swing arm shaft and is positioned below the first fixed pulley and the second fixed pulley, the movable pulley is rotatably arranged at one end of the self-adjusting swing arm, the other end of self-interacting swing arm is fixed with the unlocking plate, a plurality of fourth pulley grooves are formed in the periphery of the movable pulley, the number and the position of the fourth pulley grooves correspond to those of the third pulley grooves one by one, the cotton rope on the storage drum is led out after sequentially bypassing the first fixed pulley, the second fixed pulley, the movable pulley and the third fixed pulley, a clamping device is arranged between the first fixed pulley and the storage drum and comprises two clamping plates and a reset device for controlling the two clamping plates to close, the cotton rope penetrates through the gap between the two clamping plates and can be clamped by the two clamping plates, the unlocking plate is inserted between the two clamping plates, the thin section and the thick section with different thicknesses are arranged on the unlocking plate, and the clamping gap between the two clamping plates can be adjusted according to the different thicknesses of each part of the unlocking plate when the unlocking plate acts along with the self-interacting swing arm.
2. The constant force supply device for the cord of the v-belt as claimed in claim 1, wherein a chuck is provided on each of the opposite inner sides of the two clamping plates, the chuck is provided with a plurality of U-shaped clamping strips, the plurality of clamping strips are arranged in a straight line at intervals, the clamping strips on the same chuck face the same direction, the clamping strips on the two chucks face the opposite directions and are sequentially staggered, and a cord clamping passage for the cord to pass through is formed between the two chucks.
3. The constant force supply device for the triangular belt cord as claimed in claim 1 or 2, wherein the return device is a torsion spring, one end of each of the two clamping plates is hinged, the torsion spring is arranged at the hinged point, and the other end of each of the two clamping plates has a tendency to close under the elastic force of the torsion spring.
4. The constant-force feeder for the triangular belt according to claim 1 or 2, wherein the first pulley groove and the second pulley groove are four, and the third pulley groove and the fourth pulley groove are three.
5. The constant force supply device for the triangular belt cord according to claim 1 or 2, wherein a weight is provided on the movable pulley.
6. The constant force supply apparatus for a triangular belt cord as claimed in claim 5, wherein the weight block is connected to the movable pulley by a lifting rope.
7. The constant-force feeding apparatus for the triangular belt according to claim 1 or 2, wherein the size of the third fixed sheave is 1.2 to 3 times the size of the movable sheave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313095.8A CN111547577B (en) | 2020-04-20 | 2020-04-20 | Cord constant force supply device of V-belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313095.8A CN111547577B (en) | 2020-04-20 | 2020-04-20 | Cord constant force supply device of V-belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111547577A CN111547577A (en) | 2020-08-18 |
| CN111547577B true CN111547577B (en) | 2022-01-18 |
Family
ID=71998500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010313095.8A Active CN111547577B (en) | 2020-04-20 | 2020-04-20 | Cord constant force supply device of V-belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111547577B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972065A (en) * | 2021-10-15 | 2022-01-25 | 南通大学 | Transformer wire winding straining device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780905B (en) * | 2010-02-01 | 2012-01-11 | 领亚电子科技股份有限公司 | Cable conveyance tension adjustment method and device implementing same |
| JP5408098B2 (en) * | 2010-10-07 | 2014-02-05 | 住友電装株式会社 | Accumulator for wire |
| CN203487384U (en) * | 2013-07-29 | 2014-03-19 | 李光胜 | Clip |
| CN103832886B (en) * | 2014-03-25 | 2016-08-31 | 吴江汉通纺织有限公司 | A kind of automobile-used tensioner of reeling |
| CN105256456A (en) * | 2014-07-15 | 2016-01-20 | 池州市安东针织有限公司 | Line pressing device |
| CN204156136U (en) * | 2014-10-31 | 2015-02-11 | 徐亚珍 | A kind of can the ground clamp of detection streamer break-make |
| CN104401796A (en) * | 2014-11-30 | 2015-03-11 | 浙江德清浙北线缆有限公司 | Line storing device |
| CN106158159B (en) * | 2016-08-26 | 2017-11-17 | 国网青海省电力公司海西供电公司 | Intelligent remaining cable recovery sorter |
| CN206916356U (en) * | 2017-05-31 | 2018-01-23 | 宁波经纬线业有限公司 | A kind of Thread-feeding device device |
| CN107826892A (en) * | 2017-11-20 | 2018-03-23 | 湖州市练市聚丰线缆厂 | A kind of enamel-covered wire wire-winding tension device |
| CN108750814A (en) * | 2018-08-29 | 2018-11-06 | 浙江中兴电缆有限公司 | Upper blanking subsystem in wire coiling system |
-
2020
- 2020-04-20 CN CN202010313095.8A patent/CN111547577B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111547577A (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH09510169A (en) | Method and apparatus for reducing catenary during winding of fiber bundles | |
| CN111547577B (en) | Cord constant force supply device of V-belt | |
| CN211521073U (en) | Fire hose coiling mechanism | |
| CN112877837A (en) | Yarn mixing and twisting device | |
| US2306660A (en) | Process for handling materials | |
| CN115535710A (en) | Winding and conveying device for polyester yarns | |
| CN212147595U (en) | Cord constant force supply device of V-belt | |
| CN106348087A (en) | Stable type doubling device | |
| CN106364975A (en) | Doubling device | |
| CN115772814A (en) | Rope beating machine | |
| US2218504A (en) | Apparatus for preparing cord for making articles such as pneumatic tires, belts, andthe like | |
| IL24788A (en) | Manufacture of wire strands | |
| US3172247A (en) | Double twist cabling apparatus | |
| CN211594539U (en) | Wire turning machine | |
| US20080272221A1 (en) | Fiber tensioning device | |
| CN113699813A (en) | Automatic hemp rope braiding machine for braiding hemp ropes | |
| US2172497A (en) | Cord for making articles, such as pneumatic tires, belts, and the like and method of preparing the same | |
| CN102449213A (en) | Twisting machine provided with an automatic tensioning machine | |
| US2250334A (en) | Strand wrapping machine | |
| US20110068208A1 (en) | Fiber tensioning device and method of making prestressed structures | |
| CN214243277U (en) | Yarn backing-off and winding device | |
| US2148162A (en) | Apparatus for stretching cords | |
| CN219688816U (en) | Brake ribbon feeding frame | |
| CN215557922U (en) | Polyester yarn winding device for polyethylene continuous composite pipe | |
| CN215800110U (en) | One-step unreeling and twisting tube forming machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |