CN114933213A - Yarn constant tension device based on gravity - Google Patents
Yarn constant tension device based on gravity Download PDFInfo
- Publication number
- CN114933213A CN114933213A CN202210704716.4A CN202210704716A CN114933213A CN 114933213 A CN114933213 A CN 114933213A CN 202210704716 A CN202210704716 A CN 202210704716A CN 114933213 A CN114933213 A CN 114933213A
- Authority
- CN
- China
- Prior art keywords
- yarn
- brake
- vertical rod
- pressing plate
- yarn storage
- 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.)
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- 230000005484 gravity Effects 0.000 title claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 56
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 238000009940 knitting Methods 0.000 claims abstract description 7
- 238000009941 weaving Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003892 spreading Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009954 braiding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B65H59/04—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 package or support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/50—Diminishing, minimizing or reducing
- B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/50—Diminishing, minimizing or reducing
- B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
- B65H2601/525—Cost of application or use, e.g. energy, consumable
-
- 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
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/174—Textile, fibre
Landscapes
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
A yarn constant tension device based on gravity comprises a pressing plate, a yarn storage device and a counterweight device; the pressing plate is positioned above the yarn storage device and can move up and down; the counterweight device is arranged at the bottom of the yarn storage device; the yarn storage device comprises a yarn storage wheel, a brake drum, a brake device, a vertical rod, a crank and a pull rod; yarns are wound on the yarn storage wheel and are output to a yarn inlet of a knitting machine or a yarn laying machine through the top of the vertical rod and the pressing plate; the yarn storage wheel is fixed on the shell of the brake drum, a brake device is arranged in the brake drum, the brake device is connected with a pull rod, the pull rod is hinged with a crank, and the crank is hinged with a vertical rod; the pressing plate can press the top of the vertical rod when moving downwards. The invention adopts the pressing plate, the yarn storage device and the balancing weight, the pressing plate is a flat plate which is arranged at the outer side of the weaving machine or the filament paving machine and can be vertically lifted, the structure is simple, the manufacturing cost is low, and the invention is suitable for being used as the supply of constant tension yarns of a novel circular weaving machine and a cylindrical filament paving machine with large total filament bundles and low monofilament linear velocity.
Description
Technical Field
The invention belongs to the technical field of composite material preparation, and particularly relates to a yarn constant tension device based on gravity.
Background
The high-performance three-dimensional circular weaving machine and the cylindrical silk spreading machine which are required in the production of composite materials need yarns with constant tension, and due to the large quantity of the yarns, if a single-yarn constant tension device used by a traditional fiber winding machine is adopted, the machine cost is very high, the space occupied by the constant tension devices and the power consumption are also very large, and the relatively simple magnetic powder brake type tension device cannot recover the constant tension of the yarns and cannot be used for the cylindrical silk spreading machine.
Disclosure of Invention
The invention aims to provide a yarn constant tension device based on gravity, which aims to solve the problems that the traditional device is high in manufacturing cost, large in occupied space and power consumption and incapable of recovering yarn constant tension.
In order to achieve the purpose, the invention adopts the following technical scheme:
a yarn constant tension device based on gravity comprises a pressing plate, a yarn storage device and a counterweight device; the pressing plate is positioned above the yarn storage device and can move up and down; the counterweight device is arranged at the bottom of the yarn storage device;
the yarn storage device comprises a yarn storage wheel, a brake drum, a brake device, a vertical rod, a crank and a pull rod; yarns are wound on the yarn storage wheel and are output to a yarn inlet of a knitting machine or a yarn laying machine through the top of the vertical rod and the pressing plate; the yarn storage wheel is fixed on the shell of the brake drum, a brake device is arranged in the brake drum, the brake device is connected with a pull rod, the pull rod is hinged with a crank, and the crank is hinged with a vertical rod; the pressing plate can press the top of the vertical rod when moving downwards.
Furthermore, the brake device comprises a brake shoe, a spring, a friction plate, a rotating handle and a rotating shaft; the outer side of the brake shoe is provided with a friction plate, the end part of the brake shoe is provided with a rotating handle, the rotating handle is hinged on the rotating shaft, the inner side of the brake shoe is hinged with the pull rod, and a spring is arranged between the center of the brake shoe and the center of the brake drum.
Furthermore, the pressing plate is arranged on a pressing plate driving device, and the pressing plate driving device is a vertical lifting device.
Furthermore, a plurality of yarn through holes are formed in the pressing plate, and each through hole is provided with a yarn guide.
Furthermore, a vertical rod thread guide is arranged at the position where the top of the vertical rod penetrates through the yarn.
Furthermore, a guide pipe is fixedly arranged on the central shaft of the brake drum, and the vertical rod is inserted into the guide pipe.
Further, the larger the crank comprises a long arm and a short arm, the short arm L2, the long arm L1, L1/L2, the smaller the force required by the pressure plate to push the storage wheel.
Further, the counterweight device comprises a counterweight connecting rod and a counterweight block; one end of the balance weight connecting rod is connected with the central shaft of the brake drum, the other end of the balance weight connecting rod is provided with a balance weight block, and one end of the balance weight block is in a hook shape.
Compared with the prior art, the invention has the following technical effects:
the invention adopts the pressing plate, the yarn storage device and the balancing weight, the pressing plate is a flat plate which is arranged at the outer side of the weaving machine or the filament spreading machine and can be vertically lifted, the structure is simple, the manufacturing cost is low, and the invention is suitable for supplying constant tension yarns of novel circular weaving machines and cylindrical filament spreading machines with large total filament bundles and low monofilament linear speed.
Meanwhile, the whole device is a gravity type constant tension device for storing yarns in a pure mechanical mode without electromagnetic control, the device does not need electric energy consumption, a control computer of a braiding machine or a filament laying machine sends a signal to a servo device for driving a pressing plate to lift, the pressing plate is driven to move downwards to press a vertical rod of the yarn storage device to force a brake device to upwards loosen a brake drum, the yarn storage device releases yarns under the action of gravity, and when the pressing plate reaches a lower end stopping position, the servo device quickly moves upwards to the top; the yarn tension provided outside the storage wheel is equal to the weight of the storage wheel plus the counterweight, and the fluctuation of the yarn tension is very small for a machine with low yarn feeding speed.
The weight of the balancing weight can be freely adjusted, so that the yarn keeps constant tension.
Drawings
FIG. 1 is a side view of a gravity-based yarn constant tension device
FIG. 2 is a front view of a yarn constant tension device based on gravity
Wherein: the device comprises a pressure plate 13, a yarn guide 14, a yarn storage wheel 17, a brake drum 18, a guide pipe 19, a spring 25, a vertical rod yarn guide 15, a vertical rod 16, a crank 21, a long arm 22, a coarse thread 23, a pull rod 24, a brake shoe 26, a friction plate 27, a rotating shaft 28, a rotating handle 29, a counterweight connecting rod 30 and a counterweight 31.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1 to 2, a yarn constant tension device based on gravity includes a pressing plate, a yarn storage device and a weight block. The pressing plate is a flat plate which is arranged on the outer side of the weaving machine or the silk spreading machine and can be vertically lifted, a plurality of yarn through holes are formed in the pressing plate, and each through hole is provided with a silk guide; the yarn storage device comprises a yarn storage wheel, a brake, a spring, a yarn guide, a vertical rod and a connecting rod; the yarn is wound on the yarn storage wheel and is output to a yarn inlet of a knitting machine or a yarn laying machine through the yarn guide and the corresponding yarn guide on the pressing plate; the yarn storage wheel is clamped on a brake drum of a brake drum to rotate, and a group of friction plates in the brake drum are pressed by a spring to contact with the inner wall of the brake drum to generate braking force; the yarn guide above the yarn storage wheel is arranged at the top end of the vertical rod, the vertical rod is inserted into the guide pipe 19 fixedly connected with the brake shaft, the lower portion of the vertical rod is connected with the connecting rod through the hinge, when the top end of the vertical rod is pressed under the pressure of the pressing plate line, the vertical rod can move downwards relative to the brake shaft and drive the connecting rod to enable the friction plate to offset the acting force of the spring to reduce the braking force, and the yarn storage wheel can rotate under the action of gravity to release yarns and enable the whole yarn storage device to be lowered.
The arm L2 of the friction plate is connected to the two sides of the rotating shaft of the connecting rod is smaller than the arm length L1 of the vertical connecting rod. The larger the L1/L2, the less force is required by the pressure plate to push the storage wheel.
The inner hole of the yarn storage wheel and the excircle of the brake drum are provided with coarse threads with large thread pitches, and the screwing-in direction of the threads is consistent with the rotating direction of the yarn storage wheel when releasing the yarn.
Example (b):
referring to fig. 1, the present invention relates to a yarn constant tension device based on gravity, which comprises a pressing plate 13, a yarn storage device and a balancing weight 31.
The pressing plate 13 is a flat plate which is arranged at the outer side of the weaving machine or the silk spreading machine and can be vertically lifted, a plurality of yarn through holes are arranged on the pressing plate 13, and each through hole is provided with a silk guide 14;
the yarn storage device comprises a yarn storage wheel 17, a brake drum 18, a spring 25, a vertical rod yarn guide 15, a vertical rod 16, a crank 21 and a pull rod 24; the yarn storage wheel is wound with yarn, and the yarn 4 is output to a yarn inlet of a knitting machine or a yarn laying machine through a yarn guide 15 and a corresponding yarn guide 14 on a pressing plate 13; an inner hole of the yarn storage wheel 17 and a shell of the brake drum 18 are only provided with left and right coarse threads 23 with large screw pitches, the yarn storage wheel 17 is fixed on the shell of the brake drum 18 and rotates along with the brake drum 18, a shoe brake is arranged in the brake drum 18, a friction plate 27 is arranged on the outer side of a brake shoe 26, a rotating handle 29 of the brake shoe 26 can swing around a rotating shaft 28 connected with a fixed shaft 20, and the inner side of the brake shoe 26 is hinged with a pull rod 24; the brake shoe 26 is pressed by the spring 25 to contact with the inner wall of the brake drum to generate braking force;
the yarn guide above the yarn storage wheel is arranged at the top end of a vertical rod, the vertical rod is inserted into a guide pipe 19 fixedly connected with the brake shaft, and the lower part of the vertical rod is connected with a connecting rod through a hinge; when the pressure plate 13 does not act on the top of the vertical rod 16, the brake shoe 26 is pressed by the spring 25 to rub against the inner side of the brake drum 18, so that the brake drum cannot rotate relative to the fixed shaft 20; when the top end of the vertical rod 16 is pressed by the pressing plate 13, the vertical rod 16 moves downwards relative to the brake shaft 20 and pushes the crank 21, the lower end of the vertical rod 16 directly pushes the long arm 22 of the crank 21, the short arm of the crank 21 pulls the brake shoe 26 to move inwards through the pull rod 24 to counteract the acting force of the spring 25 so as to reduce the braking force, and the yarn storage wheel 17 rotates under the action of gravity to release yarns and enable the whole yarn storage device to descend;
to reduce the control force of the vertical rod 16, the ratio of the long arm to the short arm of the crank 21 is as large as possible.
The specific working mode of the device is that before a new product is ready to be knitted by a knitting machine or before a thread laying head of a thread laying machine is ready to perform a new primary thread laying action, a control computer of the knitting machine or the thread laying machine sends a signal to a servo device for driving a pressing plate 13 to lift, the pressing plate 13 is driven to move downwards to press a vertical rod 16 of a thread storage device to force the thread storage device to release threads, and after the pressing plate 13 reaches a lower end stop position, the servo device quickly moves upwards to the top; the tension of the yarn 4 supplied outside the storage wheel 17 is now equal to half the weight of the storage wheel plus counterweight, and the fluctuations in yarn tension are very small for machines with low yarn feed rates.
The specific brake type can also adopt an electromagnetic type or other mechanical types. In order to improve the control sensitivity and simplify the mechanical structure design, a storage battery can be arranged on the yarn storage wheel, the vertical rod can be made into a fixed type, and a proximity switch or a microswitch is arranged at the top of the vertical rod to control the electromagnet to pull the brake shoe. The example is a gravity type constant tension device for storing yarn in a pure mechanical mode without electromagnetic control.
The above description is only the most typical embodiment of the present invention, but the scope of the present invention is not limited thereto. The data listed are also only intended to describe the working principle of the invention and do not represent necessary values. Any equivalent changes or substitutions which can be easily made by those skilled in the art of fiber winding and weaving and fiber laying, within the technical scope of the present disclosure, should be covered within the scope of the claims of the present invention.
Claims (8)
1. A yarn constant tension device based on gravity is characterized by comprising a pressing plate (13), a yarn storage device and a counterweight device; the pressing plate (13) is positioned above the yarn storage device and can move up and down; the counterweight device is arranged at the bottom of the yarn storage device;
the yarn storage device comprises a yarn storage wheel (17), a brake drum (18), a brake device, a vertical rod (16), a crank (21) and a pull rod (24); the yarn storage wheel (17) is wound with yarns (4), and the yarns are output to a yarn inlet of a knitting machine or a yarn laying machine through the top of the vertical rod (16) and the pressing plate (13); the yarn storage wheel (17) is fixed on the shell of the brake drum (18), a brake device is arranged in the brake drum (18), the brake device is connected with a pull rod (24), the pull rod (24) is hinged with a crank (21), and the crank (21) is hinged with a vertical rod (16); the pressing plate (13) can press the top of the vertical rod (16) when moving downwards.
2. A gravity based yarn constant tension device as claimed in claim 1, characterised in that the braking means comprises a brake shoe (26), a spring (25), a friction plate (27), a lever (29) and a rotating shaft (28); the outer side of the brake shoe (26) is provided with a friction plate (27), the end part of the brake shoe (26) is provided with a rotating handle (29), the rotating handle (29) is hinged on a rotating shaft (28), the inner side of the brake shoe (26) is hinged with a pull rod (24), and a spring (25) is arranged between the center of the brake shoe (26) and the center of the brake drum (18).
3. A gravity based yarn constant tension device according to claim 1, wherein the pressure plate (13) is arranged on a pressure plate driving device, and the pressure plate driving device is a vertical lifting device.
4. A constant yarn tension device based on gravity as claimed in claim 1, characterised in that the pressure plate (13) is provided with a plurality of yarn through holes, each of which is provided with a yarn guide (14).
5. A gravity based yarn constant tension device according to claim 1, characterised in that a vertical rod thread guide (15) is provided at the position where the top of the vertical rod (16) passes through the yarn.
6. A yarn tension device based on gravity as claimed in claim 1, characterized in that the brake drum (18) is provided with a guide tube fixed on the central shaft, and the vertical rod (16) is inserted in the guide tube.
7. A gravity based yarn constant tension device according to claim 1, characterized in that the crank (21) comprises a long arm and a short arm, the short arm is L2, the long arm is L1, the larger L1/L2, the smaller the force required by the pressure plate to push the yarn storage wheel.
8. A gravity based yarn constant tension device according to claim 1, wherein the counterweight device comprises a counterweight connecting rod (30) and a counterweight (31); one end of the counterweight connecting rod (30) is connected with the central shaft of the brake drum (18), the other end is provided with a counterweight block (31), and the end provided with the counterweight block is in a hook shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210704716.4A CN114933213B (en) | 2022-06-21 | 2022-06-21 | Yarn constant tension device based on gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210704716.4A CN114933213B (en) | 2022-06-21 | 2022-06-21 | Yarn constant tension device based on gravity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114933213A true CN114933213A (en) | 2022-08-23 |
| CN114933213B CN114933213B (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210704716.4A Active CN114933213B (en) | 2022-06-21 | 2022-06-21 | Yarn constant tension device based on gravity |
Country Status (1)
| Country | Link |
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| CN (1) | CN114933213B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1133659A (en) * | 1965-10-23 | 1968-11-13 | Vickers Zimmer Ag | Brake device for yarn-like material |
| CN2729017Y (en) * | 2004-04-12 | 2005-09-28 | 许国强 | Yarn winding forming machine |
| CN101160253A (en) * | 2005-03-15 | 2008-04-09 | Iro有限公司 | Yarn processing system and controlled yarn tension device |
| CN203294936U (en) * | 2013-06-13 | 2013-11-20 | 常州市第八纺织机械有限公司 | Mechanism for adjusting tension |
| CN103523591A (en) * | 2013-10-18 | 2014-01-22 | 陕西华燕航空仪表有限公司 | Large-taper bobbin cone forming device |
| CN204416772U (en) * | 2014-12-29 | 2015-06-24 | 巨石集团有限公司 | A kind of straining pulley brake gear for winder |
| CN204624840U (en) * | 2015-03-31 | 2015-09-09 | 如皋市丁堰纺织有限公司 | A kind of influence of winding tension control apparatus |
| CN110040571A (en) * | 2019-05-17 | 2019-07-23 | 常州市新创智能科技有限公司 | A kind of yarn constant tension control device, method and system |
| CN110670234A (en) * | 2019-11-02 | 2020-01-10 | 徐州恒辉编织机械有限公司 | Constant tension pay-off device of multifunctional super-large stroke yarn storage and release device |
| CN110668250A (en) * | 2019-10-28 | 2020-01-10 | 保定天威线材制造有限公司 | Constant-tension pay-off brake device and application method thereof |
-
2022
- 2022-06-21 CN CN202210704716.4A patent/CN114933213B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1133659A (en) * | 1965-10-23 | 1968-11-13 | Vickers Zimmer Ag | Brake device for yarn-like material |
| CN2729017Y (en) * | 2004-04-12 | 2005-09-28 | 许国强 | Yarn winding forming machine |
| CN101160253A (en) * | 2005-03-15 | 2008-04-09 | Iro有限公司 | Yarn processing system and controlled yarn tension device |
| CN203294936U (en) * | 2013-06-13 | 2013-11-20 | 常州市第八纺织机械有限公司 | Mechanism for adjusting tension |
| CN103523591A (en) * | 2013-10-18 | 2014-01-22 | 陕西华燕航空仪表有限公司 | Large-taper bobbin cone forming device |
| CN204416772U (en) * | 2014-12-29 | 2015-06-24 | 巨石集团有限公司 | A kind of straining pulley brake gear for winder |
| CN204624840U (en) * | 2015-03-31 | 2015-09-09 | 如皋市丁堰纺织有限公司 | A kind of influence of winding tension control apparatus |
| CN110040571A (en) * | 2019-05-17 | 2019-07-23 | 常州市新创智能科技有限公司 | A kind of yarn constant tension control device, method and system |
| CN110668250A (en) * | 2019-10-28 | 2020-01-10 | 保定天威线材制造有限公司 | Constant-tension pay-off brake device and application method thereof |
| CN110670234A (en) * | 2019-11-02 | 2020-01-10 | 徐州恒辉编织机械有限公司 | Constant tension pay-off device of multifunctional super-large stroke yarn storage and release device |
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| Publication number | Publication date |
|---|---|
| CN114933213B (en) | 2024-05-31 |
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