EP2069563A1 - Needle bar for a chain drawing frame - Google Patents
Needle bar for a chain drawing frameInfo
- Publication number
- EP2069563A1 EP2069563A1 EP07818429A EP07818429A EP2069563A1 EP 2069563 A1 EP2069563 A1 EP 2069563A1 EP 07818429 A EP07818429 A EP 07818429A EP 07818429 A EP07818429 A EP 07818429A EP 2069563 A1 EP2069563 A1 EP 2069563A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- needle bar
- chain
- bar
- diameter
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/02—Gill boxes or other drafting machines employing fallers or like pinned bars
- D01H5/12—Details
- D01H5/14—Pinned bars
Definitions
- the invention relates to a needle bar for a chain line, in particular a textile tilmaschine. It further relates to a chain link with a number of such needle bars.
- a chain line with a large number of such needle bars is used in machines for combing, post-combing and in spin preparation.
- Such a needle bar which is often referred to as a disposable needle bar, is usually dimensioned in such a way that, when used in chains with chains with a chain pitch of 9.525 mm, a comparatively large distance from the needle bars in the chain is formed relative to its diameter.
- the chain pitch here means the distance between the central longitudinal axes of adjacent needle bars, which are inserted into a chain of a chain length of a textile machine.
- Conventional needle bars bend under the loads occurring in use often relatively strong, resulting in impact-like loads on the chain and the chain driving the drive.
- the invention has for its object to provide a particularly suitable needle bar for a chain line, especially for chains with a chain pitch of 9.525 mm.
- a needle bar according to claim 1 the needle bar on a support rod with a rod diameter of 7.0 mm to 7.7 mm, while the wall thickness of the sheath in the thin-walled region between 0.9 mm and 1, 25 mm.
- the support bar has in particular a bar diameter of 7.1 mm with a wall thickness of the casing in the thin-walled region of 1.2 mm, a bar diameter of 7.4 mm with a wall thickness of the casing in the thin-walled area of 1.0 mm or a rod diameter of 7.4 mm with a wall thickness of the sheath in the thin-walled area of 0.9 mm.
- a particularly advantageous has been a preferred design of the needle bar with a support bar diameter of 7.2 mm and a wall thickness of the sheath in the thin-walled area of 1, 0 mm proved.
- such a needle bar has a spacing between the longitudinal axis of the needles and the longitudinal axis of the carrier bar of in particular 2.75 mm.
- the resulting increased needle offset, d. H. The approach of the longitudinal axis of the needles of the needle bar to a take-off roll of the chain line in the region of the exit of the fiber material to be processed, improves the quality of the sliver.
- a needle bar designed according to the invention has a comparatively high flexural rigidity.
- Fig. 1 in a side view and in a plan view of a needle bar for a
- Fig. 2 shows two needle bars in a representation according to Fig. 2 in their arrangement in a chain
- Fig. 4 shows in a sectional view the end of a chain line with a number of needle bars arranged in chains and a roller arrangement for the transport of a sliver.
- Fig. 1 shows a needle bar 1 for a chain link 8 (Fig. 4) in two different views.
- the needle bar has a support rod 2, which is formed at one end to a crank 2a and at the end facing away from the crank 2a is provided with a bearing bore 2b.
- the support rod 2 is enclosed by a casing 4, which is formed on one side as a rib 4b.
- the sheath 4 consists of a plastic material that is applied in the injection process by inserting the needles 3 on the support rod 2.
- two guide grooves 7 are formed in pairs.
- Fig. 2 shows the sectional view of a needle bar.
- the support rod 2 which is characterized by its diameter d.
- the thin-walled region 4 a of the casing 4 lies opposite the part of the casing 4 designed as rib 4 b.
- This thin-walled region 4 a of the casing 4 extends at least over half the rod circumference of the needle bar 1, d. H. at least over the semicircular arc area of the needle bar 1 lying in the illustration below the center line M of the support bar 2 running through the longitudinal axis 6.
- a needle offset a between the longitudinal axis of each needle 5 and the Stromstablteilsachse 6 results as a difference of the radius 1 D / 2 of the needle bar 1 and half the thickness m / 2 of the rib 4b.
- Fig. 3 shows the arrangement of two needle bars 1 in a chain line 8 with a (not shown) chain.
- the distance designated as t between the Collinsstablticiansachsen 6 corresponds to the so-called chain pitch of the chain used in the chain line 10.
- Fig. 4 shows the arrangement of a number of needle bars 1 in a chain line 8 with two chains 9 of a textile machine.
- A indicates the feed direction of the chain path 8.
- the needles 3 of the needle bars 1 used in the chain section 8 are up to the outlet v before the take-off roll 10 in engagement with the material to be processed. Due to the enlargement of the needle offset a from 2.15 mm to 2.75 mm, the outlet width v in front of the take-off roll 10 is reduced by 0.6 mm. It is thereby achieved that the needles 3 of the needle bars 1 are temporally and / or spatially comparatively long in engagement with the material to be processed, which in turn leads to an improvement in the quality of the material to be fibrillated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202006014832 | 2006-09-28 | ||
PCT/EP2007/008345 WO2008037437A1 (en) | 2006-09-28 | 2007-09-26 | Needle bar for a chain drawing frame |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2069563A1 true EP2069563A1 (en) | 2009-06-17 |
Family
ID=38895745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07818429A Withdrawn EP2069563A1 (en) | 2006-09-28 | 2007-09-26 | Needle bar for a chain drawing frame |
Country Status (3)
Country | Link |
---|---|
US (1) | US7945999B2 (en) |
EP (1) | EP2069563A1 (en) |
WO (1) | WO2008037437A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5999128B2 (en) * | 2014-03-24 | 2016-09-28 | 株式会社豊田自動織機 | Comb top comb equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1176671A (en) * | 1966-08-25 | 1970-01-07 | Hanseatische Motoren Ges M B H | Improvements in or relating to Gill Boxes for Stretching Fibre Webs. |
US7159280B2 (en) | 2003-10-20 | 2007-01-09 | Voshell Sr William E | Disposable faller bar with improved core |
US20080022493A1 (en) * | 2006-07-27 | 2008-01-31 | Drei-S-Werk Prazisionswerkzeuge Gmbh & Co. Fertigungs-Kg | Needle bar for chain drawing frame |
-
2007
- 2007-09-26 EP EP07818429A patent/EP2069563A1/en not_active Withdrawn
- 2007-09-26 WO PCT/EP2007/008345 patent/WO2008037437A1/en active Application Filing
-
2009
- 2009-03-30 US US12/413,930 patent/US7945999B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008037437A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20090241294A1 (en) | 2009-10-01 |
WO2008037437A1 (en) | 2008-04-03 |
US7945999B2 (en) | 2011-05-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20090427 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SCHMAUSER, TILL, M. |
|
17Q | First examination report despatched |
Effective date: 20111122 |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DREI-S-WERK PRAEZISIONSWERKZEUGE GMBH & CO. FERTIG |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20150401 |