EP0340165B1 - Webmaschine mit mechanischem Leistenleger - Google Patents

Webmaschine mit mechanischem Leistenleger Download PDF

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Publication number
EP0340165B1
EP0340165B1 EP89810273A EP89810273A EP0340165B1 EP 0340165 B1 EP0340165 B1 EP 0340165B1 EP 89810273 A EP89810273 A EP 89810273A EP 89810273 A EP89810273 A EP 89810273A EP 0340165 B1 EP0340165 B1 EP 0340165B1
Authority
EP
European Patent Office
Prior art keywords
needle
tuck
trough
weft
disposed
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
EP89810273A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0340165A1 (de
Inventor
Hans Zollinger
Mario Tamaro
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0340165A1 publication Critical patent/EP0340165A1/de
Application granted granted Critical
Publication of EP0340165B1 publication Critical patent/EP0340165B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D03D47/40—Forming selvedges
    • D03D47/48—Forming selvedges by inserting cut end of weft in next shed, e.g. by tucking, by blowing

Definitions

  • the invention relates to a weaving machine with a mechanical last layer with an insertion needle for inserting the weft thread end into the edge of the fabric bandage, which insertion needle can be inserted into the open shed and from there can be displaced against the weft thread end stretched longitudinally to the fabric edge.
  • Such a mechanical strip layer is known for example from US-PS 3499474. It describes a conventional hook needle for inserting the weft end, which follows a complicated sequence of movements.
  • the drive mechanism for the groin layer must be elaborately designed if a high working frequency is to be achieved with it.
  • a projection with a ramp for guiding and lifting the weft thread end sits on the side of the needle head facing the fabric edge and that a recess is incorporated into the needle head behind the projection, and that the upper end of the ramp has a Edge and a boundary wall of the recess in a catching trough for catching and receiving the weft thread during the insertion process, the boundary wall and the ramp being inclined at acute angles to the direction of movement of the insertion needle against the fabric edge in the same sense.
  • a thread guide is provided on the needle head so that the weft thread cannot slide out of the trough.
  • the ramp for grasping the weft end is located behind the needle tip with which the needle head is passed between the warp threads on a flank of the needle head.
  • the ramp can form part of a catch mouth for the weft thread end, the catch mouth being divided into an entry area and a catch recess located behind it, which is shielded from the entry area by a jaw hook lying in the direction of the catch recess.
  • the jaw is determined on the one hand by the ramp and on the other hand by the boundary wall.
  • the inlet area of the catch mouth can be designed in a funnel shape in order to prevent the weft thread from entering facilitate.
  • the funnel is formed on the one hand by the ramp and on the other hand by a second needle tip, which also serves as a thread guide.
  • a second needle tip which also serves as a thread guide.
  • the weft slides diagonally over the outside of the jaw or ramp until it reaches the inside of the catch, the catch, via the hook tip and is drawn into the shed in this position, whereby the weft can slide out of the catch, which is open at the side .
  • the loom 1 includes, among other things, a drive motor 12, which drives a main drive shaft 13 guided by bearings 15 in the frame 11 via a belt drive 14. From this, for example, a goods tree 52 for winding the fabric 55 or possibly a warp beam 51, which unwinds the warp threads 5, are driven. Furthermore, the main drive shaft 13 drives heald frames 6 for controlling the warp threads 5 and a reed 7 for striking the weft threads which are drawn in between the warp threads along the weft path 8.
  • the weft thread 4 is fed from a weft thread spool 41 to a weft thread store 40 and is introduced into the weaving machine, for example, by means of compressed air.
  • a mechanical selvedge layer 2 can be arranged on both sides of the weaving machine Tissue bandage returns by means of a needle arm 21 attached to a rod 20.
  • This embodiment is shown in Figs. 6 and 7, Fig. 7 is a section through the needle tip 23, the section plane is parallel to the direction of entry 27 '.
  • the catch trough 26 can be enlarged, since the thread 4 during the drawing process into the selvedge is in its position 4 'in the drawing trough 26' in a defined system.
  • the enlargement of the trough 26 has the advantage that the position of the insertion needle 23 does not have to be adapted exactly to the stop line 55 ', which can be shifted depending on the type of yarn and weave.
  • Fig. 2 shows the needle arm 21 and part of the push rod 20, which can be moved parallel to the withdrawal direction 56 of the fabric 55 and pivoted about its axis.
  • the insertion needle 22 On the needle arm 21 is the insertion needle 22 with a Needle tip 23 screwed on.
  • the projection 61 merges with an edge 62 according to FIG. 2a into a recess 62 which has a boundary wall 63 towards the projection 61.
  • a thread guide 67 prevents the thread end 4 'from sliding out of the trough 26th
  • weft thread 4 After the last inserted weft thread 4 according to FIG. 2 has been inserted, it is attached to the edge of the fabric 55 by the reed 7, not shown.
  • a thread clamp 30 To hold the weft end auxiliary warp threads 5 'and a thread clamp 30 are provided, which is stationary or can be moved like scissors 34 according to arrow 33'. After the weft thread 4 is gripped between a clamping plate 31 and a clamping spring 32 of the thread clamp 30, it can be cut off by the scissors 34. Under certain circumstances, it is also sufficient to design the thread clamp as a centering device without a clamping spring 32.
  • the weft end 4 ' which is still held by the thread clamp 30, is detected by the insertion needle 22 in the position 22' after the needle arm 21 has been inserted by a pivoting movement of the push rod 20 into the shed formed by the warp threads 5 and by a Longitudinal movement was brought up to the weft thread 4, whereby the weft thread reaches the inlet area 27 of the catch mouth 24 and comes to rest in the catch recess 26 via the jaws 25.
  • the insertion needle 22 is slightly removed from the fabric edge 55 'and withdrawn in position 22 parallel to the weft 4. In position 22 ′′′ the needle tip 23 is shortly before the end of Insertion process, during which the weft end is pulled laterally through the jaw 24.
  • the special shape of the insertion needle of the groin layer means that the movement sequence of the insertion needle 22 can be kept relatively simple.
  • a further embodiment of the insertion needle 22 is shown, in which during the catching process of the weft end 4 'and the pulling-in process of the weft end only a pivoting movement of the push rod 20 is necessary, since the weft end 4' is positioned obliquely to the needle tip 23 and during the Swivel movement of the groin layer can be detected.
  • the auxiliary edge 54 'in FIG. 3 has a stop line 55' which is offset somewhat to the rear relative to the stop line 55 'of the fabric 55.
  • the weft end between the selvedge 54 and the thread clamp 30 lies obliquely to Direction of movement of the needle tip 23 when it is pivoted into position 22 'for grasping the thread end 4'.
  • the last layer can then move into the shed 53 in a single pivoting movement b and capture the weft end 4 '.
  • the insertion of the weft end 4 'then takes place in one of the immersion movement of the insertion needle 22 opposite pivoting movement e. If the pivoting movement e is large enough so that the needle tip 23 is outside the range of movement of the reed 7 when the weft thread 4 is struck, the push rod 20 does not have to be displaced axially, as is necessary in the embodiment according to FIG. 2.
  • the scissors 34 and the thread clamp 30 are in the embodiment according to FIG. 3 on the line of the weft end 4 'in its active position.
  • 3a and 3b show the formation of the insertion needle 22 necessary in the movement form according to FIG. 3.
  • the insertion needle according to FIG. 3a has a thickening 28 on the flank opposite the catch mouth 24 which forms a lane between the warp threads 5 when immersed the insertion needle 22 facilitated.
  • the warp threads 5 are displaced so that they cannot get into the entry area 27 of the catch mouth 24.
  • the catch mouth 24 is oriented parallel to the length of the weft thread end 4 'when it is grasped according to FIG. 3.
  • the catch mouth 24 thus lies at an obtuse angle to the warp threads 5 while the insertion needle 22 is immersed in the shed 53, so that the warp threads 5 cannot get caught in the catch mouth 24.
  • auxiliary edge 54 ', scissors 34 and thread clamp 30 as shown in Fig. 2 can be maintained with a similar insertion needle 22, with no axial movement of the inguinal shaft 20 is necessary.
  • Fig. 4 the drive and the working position of the last layer are shown schematically for this embodiment.
  • the main drive shaft 13 is continuously driven by the motor 12. It carries a cam drive 16, on which rollers 17 attached to lever arms 17 'run.
  • the lever arms 17 set the lever shaft 17 'in a reciprocating movement, which is transmitted through the bevel gear pair 18 to the strip laying shaft 20.
  • the bearings 19 of the main drive shaft 13, the lever shaft 17 'and the grooved shaft 20 are indicated schematically.
  • FIG. 3c shows the associated insertion needle 22, which is very similar to that according to FIG. 3b.
  • the inserted weft end 4 ' is shown in the top view corresponding to Fig. 4 and Fig. 5 in the associated side view.
  • the needle tip 23 must be slightly raised in relation to the inlet area 27 so that the warp threads 5 do not get into the catch mouth 24 when the insertion needle 22 is immersed.
  • FIG. 2 Another embodiment of the insertion needle is described below, which for certain types of tissue can be exchanged for the insertion needle according to FIG. 2 described above.
  • the movement of the groin layer remains unchanged.
  • Fig. 8a shows the needle head with the weft end 4 in a position between the warp threads 5 within the shed in the area of the selvedge 54.
  • One leg 4d 'of the weft 4 is inserted above the trough 26 in the needle head 66 and leaves it below the needle head in the thread guide 67.
  • the leg 4d '' is above the leg 4d 'and both legs can touch the warp threads. This effect is desirable because it also prevents the weft thread end 4 from dodging the insertion process due to its elasticity due to its more intensive contact with the warp threads 5.
  • FIG. 9 shows the part of an insertion needle for the other selvedge not shown in elevation, FIG. 10 in plan and FIG. 9a in side elevation.
  • FIG. 11 is a section through the needle head 66 along the line XI-XI in FIG. 10.
  • the ramp 60 can be seen as a line, as is the boundary wall 63 as a dashed line.
  • the recess 62 behind the edge 64 can be understood as an oblique opening through the needle head between the ramp 60 and a rear extension 68 on the needle head.
  • the recess extends in FIG. 10 over the area of the dashed lines to the left of the trough 26.
  • Fig. 12 shows a view of the insertion needle according to arrow XII in Fig. 10.
  • the insertion needle 22 is moved according to arrow p to the right against the stop line 55 '.
  • the weft then slides upwards in positions 4b, 4c, 4d via the ramp 60 relative to the needle head 66 until it finally slides over the positions 4e, 4f into the position 4g into the catch recess.
  • the part 4h of the weft thread held by the insertion needle in the direction of the weft thread end is pressed down by the thread guide 67, so that the weft thread 4 can no longer move upward out of the area of the needle head 66.
  • the weft end 4 ' is drawn in between the warp threads 5 in the direction of the arrow k according to FIG. 13, it slides from the side 4k over the needle head 66 and is released again at the point 4h.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP89810273A 1988-04-29 1989-04-10 Webmaschine mit mechanischem Leistenleger Expired - Lifetime EP0340165B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1612/88 1988-04-29
CH161288 1988-04-29

Publications (2)

Publication Number Publication Date
EP0340165A1 EP0340165A1 (de) 1989-11-02
EP0340165B1 true EP0340165B1 (de) 1991-12-11

Family

ID=4214507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810273A Expired - Lifetime EP0340165B1 (de) 1988-04-29 1989-04-10 Webmaschine mit mechanischem Leistenleger

Country Status (4)

Country Link
US (1) US4901769A (ja)
EP (1) EP0340165B1 (ja)
JP (1) JPH01306650A (ja)
DE (1) DE58900551D1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6918411B2 (en) * 1999-12-24 2005-07-19 Johann Berger Ribbon and method for production thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH472519A (de) * 1966-12-29 1969-05-15 Sulzer Ag Verfahren für den Betrieb einer Webmaschine und Maschine zur Durchführung des Verfahrens
FR1522148A (fr) * 1967-05-09 1968-04-19 Sulzer Ag Métier à tisser
CH595491A5 (ja) * 1975-09-02 1978-02-15 Saurer Ag Adolph
EP0134377B1 (de) * 1983-09-01 1986-11-26 Maschinenfabrik Sulzer-Rüti Ag Vorrichtung zum Einschlagen der Schussfadenenden bei einer Webmachine
EP0149969B1 (de) * 1984-01-23 1988-03-30 GebràœDer Sulzer Aktiengesellschaft Webmachine
US4715410A (en) * 1986-09-16 1987-12-29 Sulzer Brothers Limited Weaving loom

Also Published As

Publication number Publication date
DE58900551D1 (de) 1992-01-23
JPH01306650A (ja) 1989-12-11
EP0340165A1 (de) 1989-11-02
US4901769A (en) 1990-02-20

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