CN1865562A - Carrying gripper for weaving looms with (anti-loop) device to avoid anticipated weft gripping - Google Patents
Carrying gripper for weaving looms with (anti-loop) device to avoid anticipated weft gripping Download PDFInfo
- Publication number
- CN1865562A CN1865562A CNA2006100682561A CN200610068256A CN1865562A CN 1865562 A CN1865562 A CN 1865562A CN A2006100682561 A CNA2006100682561 A CN A2006100682561A CN 200610068256 A CN200610068256 A CN 200610068256A CN 1865562 A CN1865562 A CN 1865562A
- Authority
- CN
- China
- Prior art keywords
- yarn
- weft yarn
- gripper
- weft
- guider
- 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
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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
-
- 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
-
- 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
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Carrying gripper for weaving looms, of the type wherein a channel (5) is formed behind the gripper tip head (4), arranged on a substantially vertical plane parallel to the direction of the waiting weft threads, for weft thread entry in an inner area of the gripper and towards the elastic weft-gripping element (8, 9). The inlet (7) of the elastic gripping element is arranged on the bottom of the channel (5) and immediately downstream thereof, and a weft thread deflector (6) is arranged sideways to the inlet (7), on the opposite side with respect to the weft thread end connected to the fabric being woven. The deflector (6) delays entry of the weft thread in the gripping element (8, 9), thereby preventing advance gripping of thin wefts.
Description
Technical field
The present invention relates to a kind of delivery yarn gripper that is used for loom, relate in particular to a kind of yarn gripper that is used for avoiding pressing from both sides in advance the device of latitude that is equipped with.
Background technology
As known to those skilled in the art, weaving weft yarn (perhaps different weft yarn, under the situation of the weft yarn of weaving dissimilar or color) process in, after inserting weft yarn and this weft yarn being beaten up facing to fabric by reed, described weft yarn can not cut off from same fabric but still remain connected on it, till this weft yarn is selected to be used for new wefting insertion by loom once more.After selecting, according to an oblique line, weft yarn then at its point that is connected to fabric (if many woven weft yarns of wanting are arranged, therefore and some weft yarns remain on a plurality of continuous loom strokes and are not woven, just may have guider (deflector)) and stretch between the weft yarn feed unit accordingly, wherein, described oblique line crosses the wefting insertion path of yarn gripper, passes shed open so that described weft yarn is also carried then by described yarn gripper clamping.
By the yarn gripper clamping and after simultaneously yarn gripper has entered shed open, cutter sweep is got involved, and the weft yarn end-grain cutting that still is connected on the fabric is disconnected at weft yarn, allows that thus this weft yarn correctly introduces in the shed open.Therefore carrying out the definite moment of weft yarn cutting just must extremely accurately adjust; In fact, must cut off weft yarn at weft yarn in correct time during by the abundant clamping of flexible clamping device of yarn gripper, so that prevent its at the first half of shed open from the yarn gripper landing, but be unlikely to exchange at infringement of shed open stage casing and weft yarn between the traction yarn gripper.
Certainly, the instantaneity that the cut-out of the weft yarn of introducing takes place is high more, and the number of the weft yarn of processing is more little.In fact, in this case, if the weft yarn cutting postpones, fine weft just is easy to deeper enter in the flexible clamping device of delivery yarn gripper, and this has just applied high maintenance intensity by flexible clamping device to weft yarn when weft yarn exchanges.Because the tensile strength of fine weft is obviously less relatively, the situation of this intensity less than above-mentioned maintenance intensity just takes place easily, therefore, when carrying out the weft yarn exchange, just cause weft yarn to disconnect inevitably with the traction yarn gripper.
As a result, designed and proposed out to be used in particular for the yarn gripper of fine weft, wherein, elastic retaining device's shape and elastic strength at length design and adjust, so that attempt and above-mentioned inconvenient part be reduced to minimum, yet, the solution that also not have acquisition to be entirely satisfactory.As above summarized, the inconvenient part that detects when weaving fine weft is still taking place, although be reduced to a lesser extent, even under the situation of the yarn gripper that adopts this pattern.This method is returned the textile worker and is caused unfavorablely, and he must change yarn gripper when weaving article with fine weft, and in addition, when weaving the fabric of the weft yarn that comprises different numbers, it is not even allowed and this problem occurs.
Otherwise weft yarn disconnects or by delivering the inconvenient part that yarn gripper can not fully stably clipped weft yarn brings from considering to take place when weft yarn exchange just, occur to a certain degree in the yarn gripper that this inconvenience part also designs being specifically designed to the fine weft wefting insertion, the applicant has furtherd investigate the weft yarn clamping device, to attempt and to determine to cause the essential root of the problems referred to above.
In the ending of research, the applicant can finally determine, determines that one of them main cause of above-mentioned clamping defective is to occur irregular weft patterns once in a while at cutting zone.In fact, when contacting with yarn gripper, weft yarn part between yarn gripper and the fabric (promptly, described weft yarn is being introduced the weft yarn cutting part that takes place before the shed open just) always do not strain well along described oblique line, as its original setting, particularly when weft yarn is thin, but it can form the ring of arbitrary shape and position.
Such fact is depended in the formation of this ring, and promptly weft yarn especially owing to fineness, when contacting for the first time with the delivery yarn gripper, is just wedged rapidly between the flexible clamping device of yarn gripper, and locked between elastic device in advance.Thus with between delivery moment (when this weft yarn is obliquely installed with respect to fabric) of contacting first of yarn gripper and cutting (partly are basically parallel to fabric and so its length when obviously reducing at this weft yarn) constantly, prevent that weft yarn from making appropriateness and sliding on the leading edge of described clamping device, wherein, the slip of described weft yarn is necessary, keeps tensioning state with the part between fabric and delivery yarn gripper.
Therefore the applicant can find, just because of having formed this ring above-mentioned irregular clamping take place.In fact, because the position of ring is fully arbitrarily, and because it depends on that weft yarn acts on the reaction of the impact of described weft yarn to the delivery yarn gripper, compare with calculated value, according to described ring whether weft yarn is placed with respect to calculate cutting constantly institute based on the theoretical linear position of weft yarn for cutter sweep more forward or the position more stepped back, just along with producing the situation that the moment moves forward and backward of cutting.
As a result, if cutting occurs in before the required time, clamping does not have sufficient maintenance intensity, and weft yarn may be lost from the delivery yarn gripper before this yarn gripper arrives the weft yarn exchange area.On the contrary, if cutting took place after the desirable moment that theory is calculated, clamping action produces the excessive wedging of weft yarn, so that determine the maintenance intensity of weft yarn, this weft yarn keeps intensity to surpass the tensile strength of himself, and the disconnection when therefore determining with the exchange of traction yarn gripper.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of yarn gripper, it has solved this problem, eliminated the phenomenon of weft yarn clamping in advance, particularly under the situation of very thin weft yarn, and eliminated the situation that weft yarn in the weft yarn between yarn gripper and the just woven fabric part thus forms a ring.For this reason, in this manual, in brief, device of the present invention is also referred to as " preventing that ring from forming (anti-loop) " device.
Another object of the present invention provides a kind of yarn gripper of above-mentioned pattern, and it allows the thicker and thinner weft yarn of processing simultaneously, has eliminated thus according to the variation of weaving article to change the needs of yarn gripper, and has also allowed and weave the article that weft yarn changes.
According to the present invention, can realize this purpose by the delivery yarn gripper that is used for loom, described yarn gripper is this pattern, promptly, after the yarn gripper tip, form a passage that is used for that weft yarn introduced the yarn gripper interior zone and guides elasticity weft yarn clamping device into, described passage is on vertical substantially plane, described plane parallel is in the direction of waiting for weft yarn, the inlet of described flexible clamping device is located at the bottom of described passage, and directly in its downstream, it is characterized in that, it also comprises the weft yarn guider, this weft yarn guider is arranged on the described inlet next door of flexible clamping device and at the opposite side of the weft yarn end that is connected to just woven fabric, described guider is suitable for making weft yarn to postpone to enter described flexible clamping device.
Description of drawings
From the narration of following preferred embodiment, other characteristics of the present invention and advantage will become clearer, wherein:
Fig. 1 is the side view (weft yarn feed unit side) that is equipped with the delivery yarn gripper that prevents annular apparatus for converting according to of the present invention;
Fig. 2 is the side view (Woven fabric side) of delivery yarn gripper shown in Figure 1;
Fig. 3 is the vertical view of yarn gripper shown in Figure 1;
Fig. 4 is the viewgraph of cross-section shown in the line IV-IV in Fig. 1 or Fig. 2; And
Fig. 5 is the front view of yarn gripper shown in Figure 1.
The specific embodiment
In yarn gripper according to the preferred embodiment shown in here, the weft yarn guider advantageously interrelates with the mobile device of the rear wall that forms the weft yarn admission passage, wherein, this weft yarn guider has constituted the annular apparatus for converting that prevents of the present invention, and described mobile device is formerly developed (EP-A-1956644) by same applicant.This device also has some functions except forming the weft yarn admission passage, allow that particularly this channel width can regulate, and can use same yarn gripper so that allow the weft yarn of different numbers; When preventing that the slip effect of weft yarn on the yarn gripper tip from finishing, further slide at the yarn gripper rear portion, prevented to be clamped in the problem that the weft yarn in the yarn gripper is lost thus; And finally reduced the danger that is wrapped in when warp thread slides at the yarn gripper rear portion on the yarn gripper body.To recall the structure of this device briefly hereinafter,, prevent that annular apparatus for converting from being theme of the present invention so that understand the relevant subsequently narration that prevents annular apparatus for converting.
The known devices that forms the rear wall of weft yarn admission passage is clearly shown that in the accompanying drawings, particularly in Fig. 2 and 3.It is made of elongated hardware 1, and this elongated hardware 1 utilizes screw 2 to be assembled on the sidewall of yarn gripper body, and screw 2 is gone up the eyelet 3 that forms with the rear portion 1p of hardware 1 and cooperated, and rear portion 1p is roughly the plane and is parallel to the longitudinal axis of yarn gripper.The main shaft of eyelet 3 also is parallel to the longitudinal axis of yarn gripper, and therefore, by unscrewing screw 2, the longitudinal axis that can make element 1 be parallel to described yarn gripper moves the distance that equates in fact with the length of eyelet 3.
The anterior 1a of element 1 (from as the plane) tilts with respect to rear portion 1p, so that be parallel to the back edge 4p of yarn gripper tip 4.Thus, between element 1 and yarn gripper tip 4, form the passage 5 of constant width, this passage 5 is positioned at vertical substantially plane, and about the vertical axis tilt of yarn gripper, so that be parallel to the weft yarn of wait.
In above-mentioned known structure, of the present inventionly prevent that annular apparatus for converting from being made of weft yarn guider 6, longitudinally stretch its bottom at weft yarn admission passage 5, near the zone the inlet 7 of elasticity weft yarn clamping device 8,9, extends towards the rear portion of yarn gripper.In other words, guider 6 is provided with like this, that is, in a single day weft yarn arrives the bottom of admission passage 5 and enter the mouth and just began in 7 o'clock to lean against on the surface of this guider 6 near clamping device.Weft yarn leans against on the guider 6, just make described weft yarn postpone to enter clamping device, and therefore in the process that yarn gripper is advanced further, still allow the slip of weft yarn in inlet 7 work appropriateness, so that allow that weft yarn is tightened well, ring forms and remains on fully in the clamping device 8,9 when it arrives cutter sweep.
At accompanying drawing with here in the yarn gripper of described embodiment, guider 6 is integrally formed with the device 1 of the rear wall that forms the weft yarn admission passage, has constituted the part that extends laterally of this weft yarn admission passage rear wall.The end of this extension (in fact it constituted the rest surface that weft yarn slides in the above) is to side and downward-sloping, sees that as knowing from the cross section of Fig. 4 wherein, the angle of inclination is between 0 to 90 °, preferably between 50 ° and 80 °.Guider 6 also forwardly has the rounding zone of broad, it is linked to each other with device anterior 1a of 1, so that provide continuous and stable support for weft yarn.
(postpone when angle is 0 ° is zero by only changing gradient between guider and vertical plane, being 90 ° in angle, to be that the rest surface of guider postpones during substantially for level the longest) and further make more or less level and smooth of the part 1a of device 1 and the junction between the guider 6, can regulate 6 pairs of degree of support that weft yarn provided of guider satisfactorily and thereby regulate described weft yarn and insert delay degree in the clamping device 8,9.
Point out that before guider 6 longitudinally stretches in the bottom of weft yarn admission passage 5.Or rather, the free lower limb of guider 6 (that is discharging the free edge of self when, weft yarn " stop " effect on guider finishes) must be just at the height of the inlet 7 of the flexible clamping device 8,9 of weft yarn.
By with device 1 integrally manufactured guider 6, can obtain significant advantage, promptly move so that when changing the width of weft yarn admission passage 5 at device 1, prevent annular apparatus for converting 6 thereby also preferably move in the mode that is suitable for its function.In fact, because flexible clamping device 8,9 is fixed, obviously as can be seen, move backward so that when weaving the weft yarn of high-count at device 1, the leading edge of guider 6 also moves, thereby will himself be arranged on the position of the inlet 7 of more close clamping device, and therefore " stop " effect of weft yarn shows subsequently, and reach a limited degree.Yet this is corresponding with the clamping demand of the weft yarn of high-count just, and the weft yarn of this high-count must be fastened to by tighter clamping action on the yarn gripper; In this case, it is correct making a little less than the delayed-action that prevents annular apparatus for converting.
From before narration can obviously find out and of the present inventionly prevent how annular apparatus for converting from realize purpose of the present invention fully.In fact, owing to there is guider 6, clamping action is applied the short time delay, this just allows that the weft yarn part of avoiding fully between yarn gripper and the just woven fabric (that is, saying exactly in the zone of cutter sweep operation) forms the phenomenon of encircling and takes place.Thus, can not cause the loss in advance of weft yarn, and weft yarn can not disconnect with traction yarn gripper exchange weft yarn the time yet by the delivery yarn gripper as long as there is correct weft yarn clamping, just can be accurately and the mode that repeats is adjusted the accurate moment that the execution weft yarn cuts.And, by making and device 1 all-in-one-piece guider 6 (it has formed the rear wall of weft yarn admission passage 5), not only can be by mobile device 1 with the size adjusting of passage 5 for adapting to just woven weft yarn number, but also can carry out synchronous effective adjustment to " delay " effect of weft yarn clamping, improved this effect that is used for fine weft, vice versa.
The present invention narrates with particular reference to its preferred embodiment; but can know and find out; protection scope of the present invention be also included within carried out in the scope that those skilled in the art can reach various may modification (for example; so long as be fastened to mode on the yarn gripper about the shape of guider 6 or this guider), as long as it drops in the framework of the present definition that is provided by the appended claims.
Claims (7)
1. delivery yarn gripper that is used for loom, its pattern is, form a passage (5) afterwards at yarn gripper tip (4), weft yarn is introduced in the interior zone of yarn gripper being used for, and guide elasticity weft yarn clamping device (8 into, 9), described passage is positioned at the vertical substantially plane of the weft direction that is parallel to wait, the inlet of described flexible clamping device (7) is arranged on the bottom of described passage (5) also directly in its downstream, it is characterized in that, it also comprises weft yarn guider (6), this weft yarn guider (6) is arranged on described flexible clamping device (8,9) described inlet (7) on one side and be positioned on the opposite side about the weft yarn end that is connected to just woven fabric, described guider (6) is suitable for making weft yarn to postpone to introduce in the described clamping device (8,9).
2. the delivery yarn gripper that is used for loom as claimed in claim 1, it is characterized in that, described guider (6) is by being fixed to yarn gripper or integrally formed with it element constitutes, and this element is at the extending longitudinally of described yarn gripper, and has the rest surface that is used for weft yarn.
3. the delivery yarn gripper that is used for loom as claimed in claim 2 is characterized in that, at the place, front portion of the rear wall of weft yarn admission passage (5), goes up the weft yarn rest surface rounding that forms at described guider (6).
4. the delivery yarn gripper that is used for loom as claimed in claim 2 is characterized in that, the weft yarn rest surface that forms on described guider (6) is between 0 ° and 90 ° with respect to the gradient of vertical plane.
5. the delivery yarn gripper that is used for loom as claimed in claim 2 is characterized in that, the weft yarn rest surface that forms on described guider (6) is between 50 ° and 80 ° with respect to the gradient of vertical plane.
6. the delivery yarn gripper that is used for loom as claimed in claim 2 is characterized in that, it is identical with the height of the inlet (7) of elasticity weft yarn clamping device (8,9) that the free lower limb of described guider (6) is arranged to.
7. the described delivery yarn gripper that is used for loom of arbitrary as described above claim, it is characterized in that, described yarn gripper also comprises mobile device (1), described mobile device forms the rear wall of weft yarn admission passage (5), described guider (6) is integrally formed with described device (1), and moves therewith.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05425330A EP1724383B1 (en) | 2005-05-17 | 2005-05-17 | Carrying gripper for weaving looms with (anti-loop) device to avoid anticipated weft gripping |
| EP05425330.7 | 2005-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865562A true CN1865562A (en) | 2006-11-22 |
| CN1865562B CN1865562B (en) | 2010-09-29 |
Family
ID=35033805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100682561A Active CN1865562B (en) | 2005-05-17 | 2006-03-22 | Carrying gripper for weaving looms with anti-loop device |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20060260709A1 (en) |
| EP (1) | EP1724383B1 (en) |
| KR (1) | KR20060119770A (en) |
| CN (1) | CN1865562B (en) |
| AT (1) | ATE419416T1 (en) |
| DE (1) | DE602005012062D1 (en) |
| ES (1) | ES2318443T3 (en) |
| TW (1) | TWI350864B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451829A (en) * | 2013-09-24 | 2013-12-18 | 虞放河 | Carrier rapier head baseplate of rapier loom |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1468819A (en) * | 1973-06-15 | 1977-03-30 | Mackie & Sons Ltd J | Looms |
| FR2278815A1 (en) * | 1974-07-18 | 1976-02-13 | Etcoma Sarl | Loom weft picker comprises two channel sections pivoted together - forming a clamp to hold the weft yarn |
| IT1290838B1 (en) * | 1996-02-27 | 1998-12-14 | Nuovo Pignone Spa | PERFECTED CONDUCT CLAMP FOR CLAMP TEXTILE FRAME |
| DE59705563D1 (en) * | 1996-06-07 | 2002-01-10 | Picanol Nv | ENCODER GRIPPER FOR A GRIPPER WEAVING MACHINE |
| IT1303764B1 (en) * | 1998-11-17 | 2001-02-23 | S M I T S R L Societa Macchine | CLAMP OF PIPES FOR FRAMES WITHOUT SHUTTLE PARTICULARLY SUITABLE FOR THE CONTEMPORARY INTRODUCTION OF MORE PLOTS INTO THE ORDER MOUTH |
| DE60138999D1 (en) * | 2001-05-08 | 2009-07-30 | Promatech Spa | With regard to the weft thread thickness adjustable straightener for looms |
| ES2289073T3 (en) * | 2002-08-30 | 2008-02-01 | Promatech S.P.A. | IMPROVEMENTS IN THE CONVEYOR CLAMPS OF THE FRAMEWORK FOR FABRIC TELARS AND IN FABRICS FABRICS WITH GUIDE MEANS FOR THEM. |
| EP1540058B1 (en) * | 2002-09-20 | 2009-10-28 | Picanol N.V. | Feed rapier for a rapier loom |
-
2005
- 2005-05-17 ES ES05425330T patent/ES2318443T3/en active Active
- 2005-05-17 AT AT05425330T patent/ATE419416T1/en not_active IP Right Cessation
- 2005-05-17 DE DE602005012062T patent/DE602005012062D1/en active Active
- 2005-05-17 EP EP05425330A patent/EP1724383B1/en active Active
-
2006
- 2006-02-02 US US11/345,377 patent/US20060260709A1/en not_active Abandoned
- 2006-02-20 TW TW095105654A patent/TWI350864B/en not_active IP Right Cessation
- 2006-03-22 CN CN2006100682561A patent/CN1865562B/en active Active
- 2006-05-16 KR KR1020060043622A patent/KR20060119770A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ES2318443T3 (en) | 2009-05-01 |
| EP1724383A1 (en) | 2006-11-22 |
| ATE419416T1 (en) | 2009-01-15 |
| TW200706716A (en) | 2007-02-16 |
| DE602005012062D1 (en) | 2009-02-12 |
| CN1865562B (en) | 2010-09-29 |
| KR20060119770A (en) | 2006-11-24 |
| EP1724383B1 (en) | 2008-12-31 |
| US20060260709A1 (en) | 2006-11-23 |
| TWI350864B (en) | 2011-10-21 |
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| SE01 | Entry into force of request for substantive examination | ||
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Effective date of registration: 20151111 Address after: Italy Coz Patentee after: Itema S. P. A. Address before: Italy Bergamo Patentee before: Promatech SPA |