AU741911C - Entangling protection arrangement for a thread feeding buffer - Google Patents
Entangling protection arrangement for a thread feeding bufferInfo
- Publication number
- AU741911C AU741911C AU27567/99A AU2756799A AU741911C AU 741911 C AU741911 C AU 741911C AU 27567/99 A AU27567/99 A AU 27567/99A AU 2756799 A AU2756799 A AU 2756799A AU 741911 C AU741911 C AU 741911C
- Authority
- AU
- Australia
- Prior art keywords
- thread
- guide
- movable
- thread guide
- path
- 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.)
- Expired
Links
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
- B65H51/00—Forwarding filamentary material
- B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
-
- 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
Landscapes
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Moulding By Coating Moulds (AREA)
- Paper (AREA)
- Nonwoven Fabrics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Wrappers (AREA)
- Packages (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Buffer Packaging (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Polarising Elements (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Communication Cables (AREA)
- Details Of Indoor Wiring (AREA)
- Filtration Of Liquid (AREA)
Abstract
A thread feeding buffer for feeding a fibre thread (15) from a magazine roll (14) to a feed apparatus at a robot arm which is freely movable in the room. The thread feeding buffer comprises thread brake means (16, 19, 20) and at least one movable thread guide (17), on which a thrust force is acting. The thread is running from the magazine roll (14), via the brake means (16, 19, 20), through the thread guide (17) and further on towards the feed apparatus in such a way, that the thrust force acts for creation of a thread buffer between the brake means and the feed apparatus, which buffer is variable in length. At least one guide rod for guiding the movable thread guide is provided with means arranged to cause a braking effect on downward movement of the movable thread guide for preventing entanglement of the thread fed through the movable thread guide following a rapid fall of said movable thread guide.
Description
TITLE
Entangling protection arrangement for a thread feeding buffer
FIELD OF THE INVENTION
The present invention is related to a thread feeding buffer for feeding a fibre thread from a magazine roll to a feed apparatus at a robot arm which is freely movable in the room, and of the type, which is described in US patent application No 08/693,155.
BACKGROUND OF THE INVENTION
The production of fibre reinforced thermosetting plastic products can be automatized by the use of an industrial robot, by means of which a fibre feed apparatus can be controlled, so that precise amounts of fibers are fed out which are oriented for maximum strength, without the fibers projecting out through the outer plastic layer of the product. Owing to the repeatability of the robot, the quality of these products can be increased considerably, simultaneously as problems related to bad work environment and labor fatigue can be solved.
The fibre feeding apparatus is preferably located in a feedout head which can be mounted upon a movable robot arm. One or more fibre threads are supplied to the feedout head, which cuts the threads in suitable lengths. The feeding speed of the fibre thread can be in the range of about 10 meters per second. At such a feeding speed, it is difficult to stop the feeding of thread without any risk of getting the thread tangled.
The features defined in the above mentioned older application solve in an efficient manner the problems defined above.
CONFIRMATION COPY
However it has proven itself that there can still occur some risk for entanglement when the yoke provided with the movable thread guide moves downwards at a high speed. When the yoke then reaches its lower position there might be a bounce making the fed fibre thread slacken and become tangled.
THE TECHNICAL PROBLEM
The object of the invention is therefore to provide an arrangement at a thread feeding buffer which solves the above described problem.
THE SOLUTION
For this purpose the entangling protection arrangement for a thread feeding buffer for a fibre thread fed from a supply and along a path comprising a first guide for the thread, for receiving the thread from the supply, a contactable brake surface over which the thread is fed from the first guide; a brake element movement into control with the brake surface for braking movement of the thread past the brake surface; a movable thread guide in the path of the thread past the brake surface, a support comprising two substantially vertically arranged guide rods supporting the movable thread guide for movement; a further guide following the movable thread guide in the path of the thread and past which the thread is draw; the support enabling the movable thread guide to be moved by the thread to reduce the length of the thread path between the brake element engaging the brake surface and also permitting the movable thread guide to move to lengthen the distance between the brake surface and the further thread guide to absorb slack in the thread on the path between the brake surface and the further thread guide, is characterized in that at least one of said guide rods is provided with means arranged to cause a braking effect on downward movement of the movable thread guide for preventing entanglement of
the thread fed through the movable tread guide following a rapid fall of said movable thread guide.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will hereinafter be described with reference to an embodiment schematically shown in the accompanying drawing, in which Fig. 1 is a plane view of a thread feeding buffer according to the invention, with the movable thread guide moving upwards, and
Fig. 2 a corresponding view showing the movable thread guide according to Fig. 1 moving downwards.
DESCRIPTION OF PREFERRED EMBODIMENTS
The thread feeding buffer according to the drawing comprises a stand 10 with two vertical guide rods 11. The stand 10 carries an elbow arm 12 with a thread eyelet 13 for a thread 15 which is wound off from a roll 14. The thread can consist of a multiple fibre thread of glass, carbon fibre or synthetic fibre. The thread eyelet 13 provides for a substantially friction free passage of the thread.
The thread runs upwards from the roll 14 which is located at ground level, through the thread eyelet 13 and further over a bar 16 which changes the direction of pull back vertically down between the guide rods 11. A thread guide 17 is movably guided by the guide rods and is provided with further thread eyelets 13, through which the thread 15 runs. Then the thread runs on from the thread guide 17 in the direction upwards to a thread guide channel 18, which guides the thread further to a not shown robot arm.
A thread brake cooperates with the bar 16 and is composed of a clamp plate 19, which is mounted at the outer end of a
pneumatic cylinder 20 which is connected to the stand 10. The clamp plate can be brought in or out of engagement with the bar 16 by operation of the cylinder 20, whereby the feeding of the thread will be stopped.
The thread feeding buffer operates in the following way: During normal thread feeding, the pulling of the thread, via the thread eyelets 13 and the bar 16, creates an even resistance in the thread which results in an advantageous even outfeed. If the robot arm is moving in the room, so that more or less thread has to be fed out momentarily, the thread guide 17 will be able to move up and down respectively along the guide rods, wherein the thread will receive a rapid compensation in length.
If the feeding of the thread is to be stopped, this is made by activation of pneumatic cylinder 20 which then presses the clamp plate 19 against the bar 16. Now the feeding of thread at the end of the robot arm will continue for s short moment while the thread guide 17 moves upwards along the guide rods 11, until the pull in the thread is stopped. When it will be time for restarting the feeding, this will be commenced with a correctly pretensioned thread without the risk of loops or kinks on the thread.
A first one of the vertical guide rods 11 of the stand 10 at its lower end is movable by being supported in a direction to and from the opposite vertical guide rod by means of a ball 21 or the like being movable in a transverse groove 22. In normal operation the lower end of the said first vertical guide rod 11 is in its neutral position, as shown in Fig. 1, where the yoke provided with the movable thread guide 17 is moving upwards .
A means causing motion of the said movably supported lower end of the first guide rod, preferably a force piston 23 is
provided for causing such transverse movement at a rapid downward movement of the yoke a force piston 23 in order to cause that the space between the two vertical guide rods is reduced so much that the yoke with the movable thread guide 17 is clamped in wedge-form and thereby will not make any bounce .
The movement of the yoke is preferably monitored by a sensor 24 thus that a rapid downward movement of the yoke makes the sensor emit a signal for activating the force piston 23. This sensor is preferably connected to a central unit 25 receiving a signal from the sensor 24, representing the current speed of the yoke, whereby the signal is compared to a threshold value in said central unit, whereby the central unit is arranged to emit an output activating the force piston 23 when the sensed downward speed of the yoke exceeds said threshold value.
The invention is not limited to the above described embodiment, but several variations are possible within the frame of the accompanying claims. For example, the guide rods can be exchanged for other means for controlling a buffer of fibre thread. Further, a spring means can replace the action of gravity upon the thread guide means 17.
Claims (6)
1. An entangling protection arrangement for a thread feeding buffer for a fibre thread fed from a supply and along a path comprising a first guide for the thread, for receiving the thread from the supply, a contactable brake surface over which the thread is fed from the first guide; a brake element movement into control with the brake surface for braking movement of the thread past the brake surface; a movable thread guide in the path of the thread past the brake surface, a support comprising two substantially vertically arranged guide rods supporting the movable thread guide for movement; a further guide following the movable thread guide in the path of the thread and past which the thread is draw; the support enabling the movable thread guide to be moved by the thread to reduce the length of the thread path between the brake element engaging the brake surface and also permitting the movable thread guide to move to lengthen the distance between the brake surface and the further thread guide to absorb slack in the thread on the path between the brake surface and the further thread guide, c h a r a c t e r i z e d t h e r e i n that at least one of said guide rods is provided with means arranged to cause a braking effect on downward movement of the movable thread guide for preventing entanglement of the thread fed through the movable tread guide following a rapid fall of said movable thread guide.
2. An arrangement as claimed in claim 1, c h a r a c t e r i z e d t h e r e i n that the means arranged to cause a braking effect on the movable thread guide is constituted by a motion path for the lower end of a first one of said vertical guide rods, allowing the lower end of that guide rod to be moved slightly towards the other guide rod, thereby shortening the distance between the two guide rods at the lower ends thereof, and thereby causing a clamping braking effect on said movable thread guide when moving downwards .
3. An arrangement as claimed in claim 2, c h a r a c t e r i z e d t h e r e i n, that the motion path for the lower end of the first one of the two vertical guide rods is constituted by a ball rolling track .
4. An arrangement as claimed in claim 2, c h a r a c t e r i z e d t h e r e i n, that a force piston is provided adjacent the lower end of the first one of said vertical guide rods, for enabling that said lower end of the first guide rod being pushed towards the other guide rod for causing a clamping braking effect on said movable thread guide .
5. An arrangement as claimed in claim 4, c h a r a c t e r i z e d t h e r e i n, that a sensor is provided for sensing a rapid downwards movement of said movable thread guide, said sensor being arranged to cause the force piston to make a stroke causing the lower end of the first one of the vertical guide rods to move towards the other guide rod, when the sensor senses a rapid downward movement of the movable thread guide .
6. An arrangement as claimed in claim 5, c h a r a c t e r i z e d t h e r e i n, that a central unit is provided which is adapted to receive a signal representative of the speed of the downward movement of the movable thread guide from the sensor, comparing it to a threshold value and giving an output for activating the force piston, when the sensed speed exceeds the threshold value .
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/033,817 US5988553A (en) | 1994-02-02 | 1998-03-03 | Entangling protection arrangement for a thread feeding buffer |
| US09/033817 | 1998-03-03 | ||
| PCT/SE1999/000309 WO1999044933A1 (en) | 1998-03-03 | 1999-03-03 | Entangling protection arrangement for a thread feeding buffer |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AU2756799A AU2756799A (en) | 1999-09-20 |
| AU741911B2 AU741911B2 (en) | 2001-12-13 |
| AU741911C true AU741911C (en) | 2002-09-19 |
Family
ID=21872615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU27567/99A Expired AU741911C (en) | 1998-03-03 | 1999-03-03 | Entangling protection arrangement for a thread feeding buffer |
Country Status (17)
| Country | Link |
|---|---|
| EP (1) | EP1098832B1 (en) |
| JP (1) | JP4208416B2 (en) |
| KR (1) | KR100585974B1 (en) |
| CN (1) | CN1094884C (en) |
| AT (1) | ATE249388T1 (en) |
| AU (1) | AU741911C (en) |
| BG (1) | BG63660B1 (en) |
| CA (1) | CA2322259C (en) |
| DE (1) | DE69911214T2 (en) |
| DK (1) | DK1098832T3 (en) |
| EE (1) | EE04395B1 (en) |
| ES (1) | ES2207933T3 (en) |
| HU (1) | HU227895B1 (en) |
| NO (1) | NO314449B1 (en) |
| PT (1) | PT1098832E (en) |
| RU (1) | RU2203847C2 (en) |
| WO (1) | WO1999044933A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879808B (en) * | 2014-03-28 | 2016-06-22 | 福建闽光电机制造有限公司 | A kind of enamel-covered wire unwinding device |
| CN104085732A (en) * | 2014-06-20 | 2014-10-08 | 江苏佳成科技股份有限公司 | Line storage device on audio line continuous production line |
| CN106586673B (en) * | 2016-12-22 | 2018-12-28 | 中宁县鑫杞航农业发展有限公司 | A kind of device for pre- take-up |
| CN108907041B (en) * | 2018-06-29 | 2024-02-06 | 福建源光电装有限公司 | Wire conveying mechanism of binding post cutting press and working method |
| EP3766814A1 (en) * | 2019-07-16 | 2021-01-20 | Komax Holding Ag | Cable supply device, cable processing system and method for feeding a cable to a cable processing machine |
| CN113844952B (en) * | 2021-10-13 | 2023-04-14 | 安徽顺源智纺有限公司 | Yarn feeding device and method for blended yarn textile production line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477978A1 (en) * | 1990-09-28 | 1992-04-01 | Tsudakoma Kogyo Kabushiki Kaisha | Unwinding tension applying device for package |
| US5139206A (en) * | 1991-02-28 | 1992-08-18 | Mechtrix Corporation | Wire prefeeder |
| WO1995021787A1 (en) * | 1994-02-14 | 1995-08-17 | Aplicator System Ab | Thread feeding buffer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1785153C3 (en) * | 1968-08-16 | 1978-06-22 | Reiners, Walter, Dr.-Ing., 4050 Moenchengladbach | Device for balancing the thread tension on winding devices |
| DE3336729A1 (en) * | 1983-10-08 | 1985-04-25 | Reinking Maschinenbau GmbH, 4993 Rahden | Overhead wire drawing-off device |
| NL8503373A (en) * | 1985-12-06 | 1987-07-01 | Endra Bv | METHOD AND APPARATUS FOR APPLYING A WIRE, STRAP, FOIL OR OTHER BENDING STRAP ELEMENT TO AN OBJECT OR A RANGE ON OR NEXT TO ITS OBJECTS |
| DE58908655D1 (en) * | 1988-08-25 | 1995-01-05 | Rueti Ag Maschf | Method for avoiding tension peaks of a weft thread during weft insertion during the braking process. |
| DE4104087A1 (en) * | 1991-02-11 | 1991-08-29 | Dirk Mankowski | Electronic wire tension regulator for coil winding device - has successive tensioning braking and dynamic regulation stages |
-
1999
- 1999-03-03 ES ES99908053T patent/ES2207933T3/en not_active Expired - Lifetime
- 1999-03-03 DK DK99908053T patent/DK1098832T3/en active
- 1999-03-03 DE DE69911214T patent/DE69911214T2/en not_active Expired - Lifetime
- 1999-03-03 JP JP2000534488A patent/JP4208416B2/en not_active Expired - Lifetime
- 1999-03-03 RU RU2000124940/12A patent/RU2203847C2/en active
- 1999-03-03 KR KR1020007009617A patent/KR100585974B1/en not_active IP Right Cessation
- 1999-03-03 CN CN99805178A patent/CN1094884C/en not_active Expired - Lifetime
- 1999-03-03 CA CA002322259A patent/CA2322259C/en not_active Expired - Lifetime
- 1999-03-03 PT PT99908053T patent/PT1098832E/en unknown
- 1999-03-03 HU HU0101091A patent/HU227895B1/en unknown
- 1999-03-03 AT AT99908053T patent/ATE249388T1/en active
- 1999-03-03 AU AU27567/99A patent/AU741911C/en not_active Expired
- 1999-03-03 EP EP99908053A patent/EP1098832B1/en not_active Expired - Lifetime
- 1999-03-03 WO PCT/SE1999/000309 patent/WO1999044933A1/en active IP Right Grant
- 1999-03-03 EE EEP200000502A patent/EE04395B1/en unknown
-
2000
- 2000-08-30 NO NO20004321A patent/NO314449B1/en not_active IP Right Cessation
- 2000-09-28 BG BG104806A patent/BG63660B1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477978A1 (en) * | 1990-09-28 | 1992-04-01 | Tsudakoma Kogyo Kabushiki Kaisha | Unwinding tension applying device for package |
| US5139206A (en) * | 1991-02-28 | 1992-08-18 | Mechtrix Corporation | Wire prefeeder |
| WO1995021787A1 (en) * | 1994-02-14 | 1995-08-17 | Aplicator System Ab | Thread feeding buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2203847C2 (en) | 2003-05-10 |
| ATE249388T1 (en) | 2003-09-15 |
| ES2207933T3 (en) | 2004-06-01 |
| EE04395B1 (en) | 2004-12-15 |
| BG63660B1 (en) | 2002-08-30 |
| HU227895B1 (en) | 2012-05-29 |
| PT1098832E (en) | 2004-02-27 |
| NO20004321L (en) | 2000-10-25 |
| AU741911B2 (en) | 2001-12-13 |
| CN1297418A (en) | 2001-05-30 |
| KR100585974B1 (en) | 2006-06-07 |
| DE69911214D1 (en) | 2003-10-16 |
| EP1098832B1 (en) | 2003-09-10 |
| NO20004321D0 (en) | 2000-08-30 |
| JP2002505245A (en) | 2002-02-19 |
| EE200000502A (en) | 2002-02-15 |
| CA2322259A1 (en) | 1999-09-10 |
| CA2322259C (en) | 2007-06-26 |
| DE69911214T2 (en) | 2004-07-01 |
| KR20010041462A (en) | 2001-05-25 |
| JP4208416B2 (en) | 2009-01-14 |
| AU2756799A (en) | 1999-09-20 |
| HUP0101091A2 (en) | 2001-07-30 |
| BG104806A (en) | 2001-04-30 |
| NO314449B1 (en) | 2003-03-24 |
| HUP0101091A3 (en) | 2007-10-29 |
| DK1098832T3 (en) | 2004-01-26 |
| CN1094884C (en) | 2002-11-27 |
| WO1999044933A1 (en) | 1999-09-10 |
| EP1098832A1 (en) | 2001-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DA2 | Applications for amendment section 104 |
Free format text: THE NATURE OF THE PROPOSED AMENDMENT IS AS SHOWN IN THE STATEMENT(S) FILED 20020312 |
|
| FGA | Letters patent sealed or granted (standard patent) | ||
| DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS AS WAS NOTIFIED IN THE OFFICIAL JOURNAL DATED 20020411 |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |