CA2322259C - Entangling protection arrangement for a thread feeding buffer - Google Patents

Entangling protection arrangement for a thread feeding buffer Download PDF

Info

Publication number
CA2322259C
CA2322259C CA002322259A CA2322259A CA2322259C CA 2322259 C CA2322259 C CA 2322259C CA 002322259 A CA002322259 A CA 002322259A CA 2322259 A CA2322259 A CA 2322259A CA 2322259 C CA2322259 C CA 2322259C
Authority
CA
Canada
Prior art keywords
thread
guide
movable
arrangement
brake
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 - Lifetime
Application number
CA002322259A
Other languages
French (fr)
Other versions
CA2322259A1 (en
Inventor
Peder Jonsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Applicator System AB
Original Assignee
Applicator System AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US09/033,817 external-priority patent/US5988553A/en
Application filed by Applicator System AB filed Critical Applicator System AB
Publication of CA2322259A1 publication Critical patent/CA2322259A1/en
Application granted granted Critical
Publication of CA2322259C publication Critical patent/CA2322259C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00Forwarding filamentary material
    • B65H51/20Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10Adjusting 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
    • B65H59/36Floating 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)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Polarising Elements (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Buffer Packaging (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Filtration Of Liquid (AREA)
  • Communication Cables (AREA)
  • Details Of Indoor Wiring (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 threa d 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 towar ds 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 sa id movable thread guide.

Description

TITLE
Entangling protection arrange.nent for a thread feeding buffer FIELD OF THE INVENTION
The present inventi.on 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.
BACKGROLIND 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.

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 S making the fed fibre thread slacken and become tangled.

THE TECMZCAL PROBLEM
The object of the invention is therefore to provide an arrangement at a thread feeding buffer which solves the above described problem.

THE SOI,VTION

For this purpose the entangling protection arrangement for a !5 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 !0 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 !5 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 "0 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 i5 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.

In another aspect, the invention provides a thread entanglement protection arrangement for a thread feeding buffer for a fiber thread fed from a supply and along a path, the arrangement 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 movable into contact 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 generally parallel, substantially vertically arranged guide rods supporting the movable thread guide for substantially vertical movement along the guide rods, a brake arrangement at the guide rods, the brake arrangement acting on one of the guide rods for moving the one guide rod with reference to the other guide rod changing the distance between the guide rods for selectively braking downward movement of the movable thread guide, a further guide following the movable thread guide in the path of the thread and past which the thread is drawn, the support enabling the movable thread guide to be moved by the thread to reduce the length of the thread path between the brake surface and the further thread guide upon 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.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will hereinafter be described with reference to an embodiment schematically shown in the accompanying drawing, in which 3a 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 F.MBODIMENT6 The thread feeding buffer according to the drawing comprises a stand 10 with two vertical guide rods 11 _ The starid 10 carries an elbow arm 12 with a thread eyelet 13 for a thread 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, 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 !0 moment while the thread guide 1? 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 0 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.

5 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 5 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 i5 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 !0 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 buf f er of fibre thread. Further, a spring means can replace the action of gravity upon the thread guide means 17.
'.5

Claims (14)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A thread entanglement protection arrangement for a thread feeding buffer for a fiber thread fed from a supply and along a path, the arrangement 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 movable into contact 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 generally parallel, substantially vertically arranged guide rods supporting the movable thread guide for substantially vertical movement along the guide rods;
a brake arrangement at the guide rods, the brake arrangement acting on one of the guide rods for moving the one guide rod with reference to the other guide rod changing the distance between the guide rods for selectively braking downward movement of the movable thread guide;

a further guide following the movable thread guide in the path of the thread and past which the thread is drawn;
the support enabling the movable thread guide to be moved by the thread to reduce the length of the thread path between the brake surface and the further thread guide upon 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.
2. The arrangement of claim 1, wherein the brake arrangement comprises the one guide rod having a lower end which is movable toward and away from the other of the guide rods for providing a braking effect on the downward motion of the movable thread guide.
3. The arrangement of claim 2, wherein the lower end of the one rod is movable toward the other rod at the lower end thereof for causing a clamping braking effect on the movable thread guide moving downward.
4. The arrangement of claim 3, further comprising a track engaged by the lower end of the one rod for guiding the movement of the lower end of the one rod.
5. The arrangement of claim 4, wherein the track comprises a ball rolling track for the lower end of the one guide rod.
6. The arrangement of claim 3, wherein the brake arrangement comprises a force piston at the one rod for pushing the lower end of the one rod toward the other rod and for causing the clamping braking effect on the downward motion of the movable thread guide.
7. The arrangement of claim 6, further comprising a sensor for sensing rapid downward motion of the movable thread guide, the sensor being connected with the force piston for operating the force piston to move the lower end of the one rod toward the other rod when the sensor senses rapid downward motion of the movable thread guide.
8. The arrangement of claim 7, further comprising a central unit in communication with the sensor for receiving a signal from the sensor representative of the speed of downward motion of the thread guide, the central unit including means for comparing the sensed downward motion speed with a threshold value and for providing an output for activating the force piston when the downward motion speed sensed by the sensor exceeds the threshold value.
9. The arrangement of claim 3, further comprising a sensor for sensing rapid,downward motion of the movable thread guide, the sensor being connected with the brake arrangement for operating the brake arrangement to move the lower end of the one rod toward the other rod when the sensor senses rapid downward motion of the movable thread guide.
10. The arrangement of claim 9, further comprising a central unit in communication with the sensor for receiving a signal from the sensor representative of the speed of downward motion of the thread guide, the central unit including means for comparing the sensed downward movement speed to a threshold value and for providing an output for activating the brake arrangement when the downward motion speed sensed by the sensor exceeds the threshold value.
11. The arrangement of any one of claims 1 to 10, wherein:
the support supports the movable thread guide for movement in the vertical direction so that the movable thread guide is normally acted upon by gravity; and the first guide and the further guide are both located vertically above the movable thread guide so that the movable thread guide can move up and down to absorb slack in the thread.
12. The arrangement of any one of claims 1 to 11, wherein the brake surface comprises a runner over which the thread runs and the brake element comprises a pneumatic cylinder and a clamp movable with respect to the cylinder for clamping against the brake surface.
13. The arrangement of any one of claims 1 to 12, wherein the first guide and the movable thread guide respectively comprise eyelets through which the thread passes.
14. The arrangement of any one of claims 1 to 12, wherein the first guide and the further guide are stationary, relative to the movement of the movable thread guide.
CA002322259A 1998-03-03 1999-03-03 Entangling protection arrangement for a thread feeding buffer Expired - Lifetime CA2322259C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/033,817 1998-03-03
US09/033,817 US5988553A (en) 1994-02-02 1998-03-03 Entangling protection arrangement for a thread feeding buffer
PCT/SE1999/000309 WO1999044933A1 (en) 1998-03-03 1999-03-03 Entangling protection arrangement for a thread feeding buffer

Publications (2)

Publication Number Publication Date
CA2322259A1 CA2322259A1 (en) 1999-09-10
CA2322259C true CA2322259C (en) 2007-06-26

Family

ID=21872615

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002322259A Expired - Lifetime CA2322259C (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)

* Cited by examiner, † Cited by third party
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 Device for pre-winding wire
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
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.
JP2883710B2 (en) * 1990-09-28 1999-04-19 津田駒工業株式会社 Package unwinding tension applying device
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
US5139206A (en) * 1991-02-28 1992-08-18 Mechtrix Corporation Wire prefeeder
SE503620C2 (en) * 1994-02-14 1996-07-22 Aplicator System Ab Wire feed buffer for feeding wire

Also Published As

Publication number Publication date
NO20004321D0 (en) 2000-08-30
JP4208416B2 (en) 2009-01-14
KR20010041462A (en) 2001-05-25
CN1297418A (en) 2001-05-30
EP1098832A1 (en) 2001-05-16
BG63660B1 (en) 2002-08-30
HUP0101091A3 (en) 2007-10-29
AU2756799A (en) 1999-09-20
ATE249388T1 (en) 2003-09-15
DE69911214D1 (en) 2003-10-16
CA2322259A1 (en) 1999-09-10
EP1098832B1 (en) 2003-09-10
EE200000502A (en) 2002-02-15
RU2203847C2 (en) 2003-05-10
DK1098832T3 (en) 2004-01-26
PT1098832E (en) 2004-02-27
JP2002505245A (en) 2002-02-19
CN1094884C (en) 2002-11-27
HUP0101091A2 (en) 2001-07-30
NO314449B1 (en) 2003-03-24
NO20004321L (en) 2000-10-25
AU741911C (en) 2002-09-19
KR100585974B1 (en) 2006-06-07
EE04395B1 (en) 2004-12-15
AU741911B2 (en) 2001-12-13
BG104806A (en) 2001-04-30
ES2207933T3 (en) 2004-06-01
DE69911214T2 (en) 2004-07-01
HU227895B1 (en) 2012-05-29
WO1999044933A1 (en) 1999-09-10

Similar Documents

Publication Publication Date Title
CA2322259C (en) Entangling protection arrangement for a thread feeding buffer
US3966133A (en) Tension controlling apparatus
US5988553A (en) Entangling protection arrangement for a thread feeding buffer
US5501250A (en) Method for deleting and reintroducing yarns to a textile process
US4224719A (en) Reserve fibre sliver feeding apparatus
MXPA00008578A (en) Entangling protection arrangement for a thread feeding buffer
CA1075095A (en) Method and an apparatus to detect prolonged excessive tension in yarn material
US5775611A (en) Support for a traveling strand of rubber yarn
CN113862858A (en) High-strength glass fiber high-speed warping device and method
KR950005591Y1 (en) Portable brake for draft machine

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20190304