EP1373619A1 - Nehmergreifer für eine greiferwebmaschine - Google Patents
Nehmergreifer für eine greiferwebmaschineInfo
- Publication number
- EP1373619A1 EP1373619A1 EP02716744A EP02716744A EP1373619A1 EP 1373619 A1 EP1373619 A1 EP 1373619A1 EP 02716744 A EP02716744 A EP 02716744A EP 02716744 A EP02716744 A EP 02716744A EP 1373619 A1 EP1373619 A1 EP 1373619A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping surface
- component
- clamping
- counter
- ceramic material
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
- D03D47/236—Drawing grippers
Definitions
- the invention relates to a slave rapier for a rapier weaving machine with a component that has a clamping hook with a clamping surface, and with a movable component that has a counter clamping surface assigned to the clamping surface of the clamping hook.
- the component having the clamping hook is fixedly attached to a gripper belt or to a guide part which extends a gripper belt.
- the movable component is movable in such a way that its counter-clamping surface is moved to the clamping surface of the clamping hook by means of a loading spring and can be moved against the force of the loading spring in such a way that the counter-clamping surface is lifted off the clamping surface of the clamping hook.
- the movable component as an element movable in the direction of movement or longitudinal direction of the gripper (US Pat. Nos.
- the movable component be it displaceable in the longitudinal direction or pivotable about a pivot axis, is usually made of a metal.
- the invention has for its object to improve the functional reliability of a slave gripper of the type mentioned.
- the movable component is made of ceramic material.
- the ceramic material leads to a relatively high rigidity and strength of the movable component, which nevertheless has a relatively small mass and a correspondingly small mass moment of inertia due to the relatively low specific weight of the ceramic material.
- this movable element is relatively insensitive to vibrations or oscillations, which could lead to the counter clamping surface becoming detached from the clamping surface of the clamping hook, so that the gripper opens unintentionally and loses the weft thread.
- the wear in the area of the counter-adhesive surface and / or in the area of a bearing and / or in the area of the attack of an actuating cam o. the like much less than with metal. Wear resistance or strength-increasing inserts can generally be dispensed with.
- the component with the clamping hook is also made of ceramic material.
- the weight of the gripper can thus be reduced overall, while the wear in the area of the clamping hook is also reduced.
- the drawing shows an exploded view of a component that can be fixedly attached to a gripper belt or a guide part with a clamping hook and a component that is relatively movable in relation to it.
- the slave gripper shown only partially in the drawing has a component 10 which is fixedly attached to a gripper belt or to a guide part which extends a gripper belt.
- the front end of this component 10 is provided with a clamping hook 11, which begins at a tip and has a hook tongue pointing backwards.
- This hook tongue forms a clamping surface 12, which is assigned a counter-clamping surface 13 of a movable component 14.
- the movable component 14 is a two-armed lever, the head 15 facing the clamping hook 11 is provided with the counter-clamping surface 13.
- the front end of the head 15 is provided with a profile 16, which is associated with a profile 17 on the inside of the clamping hook 11.
- the meaning of these profiles 16, 17 is explained in the applicant's parallel patent application (internal file number: P 40197 DE).
- the clamping surface 12 and / or the counter clamping surface 13 can also be smooth or flat.
- the second arm of the lever 14 forms an actuating element 18 which is associated with a stop, not shown.
- the lever 14 is pivoted about its pivot axis, whereby the gripper is opened, ie the counter-clamping surface 13 is lifted off the clamping surface 12.
- the two-armed lever 14 is provided between the two arms with a bearing recess 19 with which it is mounted on a pin or journal 20 which protrudes from the component 10.
- a compression spring acts on this arm of the lever 14, which loads the lever 14 in such a way that the counter-clamping surface 13 is pressed onto the clamping surface 12 of the clamping hook 11.
- the lever 14 is designed that its center of gravity is at least approximately in the pivot axis formed by the bearing recess 19 and the pin or journal 20. The purpose of this measure is explained in a parallel patent application by the applicant (internal file number: P 40198 DE).
- the movable component in the form of the lever 14 is made of a ceramic material.
- the ceramic material in particular in powder form, is brought into the shape of the lever 14 shown and then reduced or fired. With the techniques common today, it is possible to produce the lever 14 in its final form without the need for subsequent processing, i.e. also no processing in the area of the counter clamping surface 13, the guide means 16, the actuating element 18 and the bearing receptacle 19.
- the ceramic material has the advantage that the specific weight is relatively low.
- the ceramic material has a high strength and a high hardness. The wear in the area of the counter clamping surface 13, the actuating element 18 and the bearing receptacle 19 is thus low.
- the risk of vibrations is relatively low, especially if the center of gravity is in the region of the pivot axis 19, 20. This allows the necessary forces of the compression spring to be limited, so that wear can also be significantly reduced in the area of the bearing.
- the component 10 will be made of metal in most cases, the bearing journal 20 being provided with a wear-resistant bushing. However, it is also advantageous to produce this component 10 with the clamping hook 11 and the bearing pin 20 from ceramic material.
- the invention has been explained in the exemplary embodiment with reference to a movable component in the form of a pivotable lever 14.
- the invention is of course also suitable for movable components of slave grippers that are not are pivotable, but rather are moved back and forth in the longitudinal direction, as is known for example from US Patents 4,520,851, 4,736,777 and 4,739,805. It is then expedient if the actuating lever is also made of ceramic material, which is articulated to the longitudinally displaceable component and transmits the longitudinal movement.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Advancing Webs (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10114756A DE10114756A1 (de) | 2001-03-21 | 2001-03-21 | Nehmergreifer für eine Greiferwebmaschine |
DE10114756 | 2001-03-21 | ||
PCT/EP2002/001305 WO2002077342A1 (de) | 2001-03-21 | 2002-02-08 | Nehmergreifer für eine greiferwebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1373619A1 true EP1373619A1 (de) | 2004-01-02 |
EP1373619B1 EP1373619B1 (de) | 2006-12-27 |
Family
ID=7679051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02716744A Expired - Lifetime EP1373619B1 (de) | 2001-03-21 | 2002-02-08 | Nehmergreifer für eine greiferwebmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US7114530B2 (de) |
EP (1) | EP1373619B1 (de) |
CN (1) | CN1260414C (de) |
AT (1) | ATE349560T1 (de) |
DE (2) | DE10114756A1 (de) |
WO (1) | WO2002077342A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1024494B1 (nl) * | 2016-08-11 | 2018-03-12 | Picanol Naamloze Vennootschap | Grijperband en grijpereenheid voor een grijperweefmachine |
EP4101961A1 (de) | 2021-06-10 | 2022-12-14 | Picanol | Klemmzunge und verfahren zur herstellung einer klemmzunge |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1598258A (de) * | 1968-12-03 | 1970-07-06 | ||
US3986532A (en) * | 1975-09-23 | 1976-10-19 | Rockwell International Corporation | Weft extending carrier |
CH670262A5 (de) * | 1986-02-13 | 1989-05-31 | Sulzer Ag | |
CH669220A5 (de) * | 1986-02-13 | 1989-02-28 | Sulzer Ag | Greifer fuer den schussfadeneintrag bei einer greiferwebmaschine. |
JPH0390657A (ja) * | 1989-06-22 | 1991-04-16 | Iwao Yamaji | グリッパー織機 |
DE10114755A1 (de) * | 2001-03-21 | 2002-09-26 | Picanol Nv | Nehmergreifer für eine Greiferwebmaschine |
-
2001
- 2001-03-21 DE DE10114756A patent/DE10114756A1/de not_active Withdrawn
-
2002
- 2002-02-08 AT AT02716744T patent/ATE349560T1/de not_active IP Right Cessation
- 2002-02-08 CN CNB02806884XA patent/CN1260414C/zh not_active Expired - Lifetime
- 2002-02-08 DE DE50209083T patent/DE50209083D1/de not_active Expired - Lifetime
- 2002-02-08 US US10/471,294 patent/US7114530B2/en not_active Expired - Fee Related
- 2002-02-08 WO PCT/EP2002/001305 patent/WO2002077342A1/de active IP Right Grant
- 2002-02-08 EP EP02716744A patent/EP1373619B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO02077342A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1498293A (zh) | 2004-05-19 |
ATE349560T1 (de) | 2007-01-15 |
EP1373619B1 (de) | 2006-12-27 |
CN1260414C (zh) | 2006-06-21 |
WO2002077342A1 (de) | 2002-10-03 |
US7114530B2 (en) | 2006-10-03 |
DE50209083D1 (de) | 2007-02-08 |
DE10114756A1 (de) | 2002-09-26 |
US20040089366A1 (en) | 2004-05-13 |
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