JPS58163755A - Rapier loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weaving machine and more particularly to a rapier weaving machine in which the weft threads are introduced into the warp shed as 21 weft threads.

It is a national problem to provide a reliable selvage at each edge of a fabric made with rapier & iso by continuous double weft weft insertion, where the weft feed section is on the familiar side and the loops forming the two wefts are The ends of the fins must be held during the shed change, thus creating fringes on this fin in the final fabric.

In order to prevent the formation of fringes on the hoe that makes the fabric by wefting the double-wire weft thread, it has been proposed to use a catch thread or sewing thread that cooperates with the loop ends and pulls and tensions the double loop, Such a proposal provides a satisfactory solution to this problem.

It is well known in the art that a rapier loom has one or the other of a limited range of nominal dimensions, and that a particular loom is used to produce fabrics of a particular width that is increased to the nominal loom dimension but slightly different from this width. It is standard practice to carry out the flight PF3'''r, and the possible variations are determined by the range of adjustment regarding the warp yarn weight by the catch yarn mechanism.

In the case of wide looms, i.e. for producing fabrics with a width of 2 to 2.25 m, the main market demands or 1 to 1.
Due to the belt-like fabric having a width in the range of 125 m, the utilization of several machines is unfortunately low. A wide range of machines may therefore be out of action for a considerable period of time.

In order to increase the utilization of a wide range of looms, such looms are
Correspondingly, it is used to produce a wide range of fabrics, which are successively cut in the direction of the warp threads and provided with two or more individual supports, each of the required width. However, in such cases the protection of the selvage edges formed by the cutting is quite unsatisfactory and the use of the belt is therefore limited without some kind of edge reinforcement.

It is an object of the invention that the weft threads are inserted as loops, so that a double weft thread is obtained for each weft insertion, and that a considerable variation in the width of the fabrics produced is achieved without having to cut "over-width" fabrics. The objective is to provide such a rapier loom as equipped.

According to the present invention, a rapier loom is provided, which inserts a 2 m weft thread from a continuous weft supply during each loom operation, and has the following features. That is, a rapier action is carried out on each side of the loom, and two selvage systems are provided midway between the sides of the loom. or the loop can be inserted over only part of the 2, and the selvage system can be removed from the intermediate fabrication position on the side of the I/LC machine, and the selvage system can be selectively applied. It can be placed on the side of the loom away from the side of the rapier operation.

The selvage system that can be placed on the side of the loom away from the side of the selectively applicable rapier action may be the same as or different from the selvage system provided in the middle of the loom side.

The invention will now be further described with reference to the appendix, which shows, by way of example only, one embodiment of the invention.

In the drawings, in particular in FIG. 1, the weft yarn loop 11 is introduced into the warp shed 12 by a reciprocating rapier 13, in which case the weft yarn 14 from the yarn package 15 is hooked onto said rapier. and said rapier, by its forward movement, moves the selvage shuttle 16.
Send the weft yarn through the shed until it reaches the position of the road. The nose 17 of the shuttle receives the loop 11 from the rapier 13, passes through the loop 11 around the selvage yarn package 18Y supported by the shuttle 16, threads the selvage yarn 19 through the loop 11, and threads the selvage yarn 19 through the loop 11. In this case, the loops 11 are retained without being pulled out of the shed 12 during the retracting or withdrawing movement of the rapier by reciprocating fingers 2o placed adjacent to the edges 21 of the warp threads 22.

To explain in connection with the withdrawal of the rapier 13 and the change of the warp yarn shed, the sleigh 23 is a
4 is pivoted so as to properly beat the weft thread loop 11, and is retracted out of the movement path of the rapier 13 in preparation for wefting the next weft thread loop.In this case, the selvage shuttle 16 and The fingers 20 are withdrawn 111JK opposite the movement path of the rapier 13, respectively.

The above operations are conventional in the art.

According to the invention, the operating principle schematically illustrated in FIG. This also makes it possible to produce two or more woven fabrics that are essentially narrow in width, the total width of which is narrower than the normal width.

Therefore, as will be explained next with reference to FIGS. 2 to 4, the rapier loom 30 is operated from a creel (not shown) to a feeding device 32.
The warp yarns 31 are fed in sheet form through the loom, and the woven fabric 33 is taken up from the loom by a winding yarn 34.
sent to.

The warp yarns 31 form two spaced apart warp yarn systems 35, 36 (FIGS. 3 and 4), both systems in the illustrated embodiment having approximately the same width and having an mbO They are arranged symmetrically in the width direction.

It is a rapier machine 1137 although the photoelectric is only shown.
are located on the valley side of the loom, and each rapier mechanism 37 cooperates with an associated selvage shuttle and finger arrangement 38 located in the spaces between the individual warp yarn systems to move the selvage yarns (not shown). ) into the weft loop and retaining the selvedge yarn against withdrawal (the shuttle and finger arrangement &38 are similar to those conventionally used in the art; However, it is only a minor point).

When the loom is utilized to weave two fabrics side by side, two warp yarn systems 35, 36 are used to enable non-intermittent movement of the selvage shuttle and fingers of the device 38 under open conditions. In the position where it meets the intervening space 42, the pressed beam angle part 39 of the loom is divided into two parts 40, 41, which parts 4
0.41 is made relatively movable so that the ends are engaged and separated from each other by impacting as schematically shown in Figures 5 and 6 of the drawings. ing.

If necessary, the reed 43 (regarding FIG. 2 9 can be divided and of a similar construction to that described above in order to be able to separate the two parts of the reed if necessary. Parts 2 to 4)
In the manufacturing mode illustrated in FIG. There is. In order to substantially adjust the stroke of a selected one of the plurality of rapiers and thereby enable selective use of the rapier in the production of wide or narrow fabrics, FIG. A drive mechanism as illustrated in FIG. 7 has been proposed.

To explain with reference to Fig. 7, the drive mechanism is a planetary gear system! [, 44, the output side of which is drivingly connected to an outwardly directed wheel 45 meshing with a rack 46 fixed to the underside of the rapier 37; The gear system is driven by a drive shaft 47 through a combination device 48 of a cam and a cam driven member that reciprocates a drive rod 49 connected to an input arm 50 that constitutes an input member. The arm 50 is positionally adjustable in the longitudinal direction so that the angular movement of the planetary gear set &44 and thus the stroke of the rapier 37 can be varied. The cam and cam follower assembly f148 comprises two military service cams 51 (one of which is shown at 4), each of which has an associated follower member 52. It serves to ensure positive and controlled movement in both the drive rod 49 and the rapier 37 in each direction of their movement.The movement of the cam followers 52 is such that they are at an angle with respect to each other. The pivot drive lever 5 is fixedly arranged as shown in FIG.
3 to the drive rod 49, the drive lever 53 being articulated at the lower end of the drive rod 49. In order to provide a restricted rapier movement intended for the production of fabrics that are significantly narrower than the actual width of the loom, the connection between the drive rod and the manual arm must be connected to the remote end of the input arm. In order to move the rapier back and forth over the entire width of the power loom, the connection is brought closer to the planetary gear train.

To describe the use of the above rapier loom where the production of two separate pieces of fabric is required, each side of the loom is operated to weave its own fabric, and the movement of each rapier cooperates with an associated selvage system. forming a fast selvedge on the "inner" edge of the fabric;
The selvage at the "outer J edge" of each fabric is fixed by the crossing of the warp yarns, which is associated with the running of the double-loose, combined with continuous weft feeding during shed formation of the warp yarns.

If a fabric with a width equal to the normal width of the loom is required, only one rapier movement is used;
The sled width momentum is increased accordingly and the double selvage mechanism is shifted from its operating position midway between each side of the loom. The selvage mechanism is adapted to cooperate with the working rapier movement, in which case the selvage mechanism may or may not be part of a double selvage mechanism, for wefting the captured weft yarn and for the double pick. It serves to hold the weft yarn at the remote end.

The structure described makes it possible to make maximum use of a wide rapier loom and to produce or weave fabrics that span the entire width of the loom while providing sufficient selvage to satisfy the valley edges of one or more fabrics. You can choose to purl a fabric with a width that is essentially narrower than your overall width to provide convenience on a single loom.

In the normal case, the individual fabrics will have a similar construction and the warp tension, weave and warp threads will be different when using a jacquard mechanism for warp control rather than a belt frame shed forming mechanism of the construction described above. Since similar weaving conditions are required in terms of width, if a common delivery device and take-up rolls are used, it is possible to obtain different properties, at least in terms of fabric structure, that are compatible, for example, between warp tension and warp yarn utilization of the individual fabrics. The invention makes it possible to weave fabrics with side-by-side.

[Brief explanation of drawings]

Among the accompanying drawings, Figure 1 schematically shows the operation of a rapier loom that double-welds the weft yarn into the warp shaft, and also shows a selvage shuttle that forms a first selvage at the edge of the fabric that is remote from the rapier mechanism. 2 is a schematic side view of a rapier loom constructed according to the present invention; FIG. 3 is a schematic front view of the structure shown in FIG. 1; Figure 4 is a schematic plan view of a rapier loom with various parts omitted for the sake of clarity; Figures 5 and 6 are schematic diagrams illustrating half-width and full-width rapier operations, respectively; Figure 7 is a schematic drawing, on a slightly enlarged scale, of a rapier drive system of the type suitable for substantially adjusting the rapier stroke; This is the figure. Rapier loom ・・・・・・・・・・・・・・・30 Rapier ・・・・・・・・・・・・・・・・・・13
, 37 Two-wheeled selvage system...38 (Selvage shuttle and finger device) Rapier drive device......No specific code, Figure 7 Input arm...・・・・・・・・・50 Speed-up transmission device・・・・・・・・・ 44 (Planetary gear) rack・・・・・・・・・・・・・・・46 Drive rod・・・・・・・・・・・・49 Patent Applicant Spencer, Wright, Industries, Inc. F-G7 Procedural Amendment (Method) % Formula % 1゜Indication of Case Patent Application No. 227819/1989 No. 2 , Name of the invention Rapier loom 3, Person making the amendment Relationship to the case Patent applicant 4/Attorney 103 5, Date of amendment order March 9, 1983 (Shipped on March 29, 1988) 6 Subject of amendment Drawing surface 7, contents of amendment as attached (1 copy of drawing (6)) No changes to the engraving or contents of the drawing

Claims (1)

[Scope of Claims] (υIn a rapier loom adapted to insert a double weft thread from a continuous weft supply during each loom operation, a rapier action is carried out on each side of the loom, and A 21 selvage system is provided in the middle of the side of the loom, the at least one rapier action being capable of selectively inserting a double loop over the whole or only part of the loom width, and The cellvage system is
A rapier loom, removable from an intermediate operating position on the side of the loom, characterized in that the selvage system can be placed on the side of the loom shaded from the side of the selectively applicable rapier operation. (2) Eight drives are provided for each selectively compatible rapier operation, the drive having a pivot input arm driven by a speed-up transmission; an output member operatively coupled to a rack mounted on the rack for reciprocating the rapier; 2. A rapier loom as claimed in claim 1, further comprising a reciprocating drive rod which can be coupled to the input arm at a selected longitudinal position.