JPS6359443A - Method and apparatus for producing fastener belt by weaving - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to the method of weaving two plastic filament yarns simultaneously in opposite orientations around a cantilevered capture mandrel in a weaving position to form a series of connected fastener elements. The two plastic filament yarns are inserted by means of a plastic filament weft needle into the thread halves at the same height in each case as double weft yarns and at the weaving position in the weaving direction. At the end of the catching mandrel which is located in front and moves up and down, the respective plastic filament is passed between the two legs of the double weft thread, and the support belt base is then passed along with the plastic filament thread into another warp thread. Inserting the weft threads and intertwining them with the warp threads, guiding these support belt base weft threads through a weft thread guide device in the central area of the width of the weft thread track, and in the area between the weft thread guide device and the weaving position. The present invention relates to a method for producing a fastener belt having an array of fastener elements made of plastic filaments and a fabric support belt by weaving, inserted by a base weft needle having an open thread-receiving notch and a deflection projection.

The inverted loops of the supporting belt base weft in the weaving position can then be crocheted into the edge of the fabric. Within the scope of the present invention, a fastener belt is an endlessly woven belt having an array of fastener elements and a textile support belt, so that it can be cut to length, fitted with start and end ends, and with a slider. A fastener is made by attaching the K.

Furthermore, the invention relates to a device for implementing such a method.

2. Prior Art The above-mentioned known procedures (German Patent Application No. 2707946, German Patent Application No. 30)
No. 31,654), a base weft needle having a thread receiving notch at the tip is used. The turning protrusion, which should rather be called a retraction, is used to ensure that the correct 1 trowel thread is inserted into the thread receiving notch (12).The thread receiving notch and the notch bottom are in the plane of movement of the base weft needle. Therefore, if the disturbed warp threads enter the path of movement of the base weft threads, they may collide with the warp threads during the insertion of the support belt base weft threads.
You may be taken away. Obstructed warp yarns are, for example, those that have fallen down into the path of movement of the base weft needles or that have been prevented from changing their course. Entrainment of the faulty warp yarns results in the same JPi weaving errors.

OBJECT OF THE INVENTION The object of the present invention is to improve the method as described at the beginning,
The object of the present invention is to ensure that the faulty warp threads are no longer entrained by the base weft needles and thereby increase the length of the zipper belt that can be erroneously removed.Furthermore, it is desirable to provide a simple device for carrying out this method. Make it.

Structure of the Invention In order to solve this problem, the present invention shows the following points. That is, the support belt base weft thread is bent by the deflection projection in the weft thread guide device and moved into a thread receiving notch which follows the deflection projection in the direction of movement of the base weft needle and is directed towards the diverted support belt base weft thread, and the base weft thread is Obstructed warp threads that have entered the path of movement of the needles are passed through the thread receiving notch by means of correspondingly formed deflection projections.

According to the invention, the base weft threads are deflected by the base weft needles, and the direction of the light path differs significantly from that of the warp threads. This is done by means of deflection projections. The yarn storage notch is retracted and is adapted to receive the turned base weft yarn. The obstructed warp threads are, as it were, repelled by the deflection lug, and are no longer carried away by the thread-receiving notch. This is easily achieved by means of a device as will be explained in more detail below with reference to the drawings which show exemplary embodiments.

Description of examples Embodiments of the present invention will be described below with reference to the drawings.

The illustrated apparatus for carrying out the method according to the invention will be described first in terms of its basic structure and later in its operation.

The illustrated device consists of a loom with a string forming mechanism, a simultaneously operable weft thread insertion device 2 arranged on both sides of the string 1 and a catching axle 5 arranged in the middle of the string 1, with this catching The mandrel is supported by a mandrel holder 4 which is located in front of the weaving station 3 and is movable up and down.

The weft thread insertion device 2 has a plastic filament weft needle 6 for inserting and removing the plastic filament thread 7 of the fastener element row 8, and an additional base weft needle 9 for simultaneously inserting the support belt base weft thread 10. In the weaving direction, in front of the catching mandrel 5 and in the center of the entire length,
At the weaving position 3, there is provided a guide device 11 for the support belt base weft 1°, which is fed substantially in the weaving direction. Support base A/) The base weft thread needle 9 corresponding to the base weft thread LO is
It has a thread receiving notch 12 which is open in the area of the free end.

Specifically, the following will be described regarding the construction and operation of the device and the weaving process.

The thread forming mechanism forms a thread thread 1 and another warp thread thread 13 consisting of warp threads 14. The threads 1 are formed by the warp threads 15 for the connection of the fastener element rows 8. These warp yarns 15 alternate between a high position and a low position. Further warp threads 13 are formed by warp threads 14 for the support belt section 16 which are aligned with the fastener element row 8, these warp threads 14 alternating between a low position and a middle open position. As is clear from Figure 4, Hido 1 is
In plan view it is centered between the two halves of the further warp thread 13. The weaving position 3 is at the beginning of a fastener guide with a thermosetting device, not shown.

On both sides of the thread channel 1 and the further warp thread channel 13, the swingable weft thread insertion device 2, which has already been described, is arranged. Both weft thread insertion devices 2, which can be operated simultaneously, first have a plastic filament weft needle 6 for inserting a plastic filament thread, which is in each case fed from the same outside. The plastic filament weft needle 6 therefore has a closed thread guide hole 17. In addition, both weft thread insertion devices 2 have a base weft needle 9 for simultaneously inserting the preceding support belt base weft thread 10. Since these support belt base weft threads 10 are not inserted from the outside into the further warp threads 13, these base weft needles 9 have the already described open thread receiving notches 12 in the region of their free ends; These thread receiving notches are clearly shown in the enlarged detail of FIG. All weft needles of the weft insertion device 2 6.
9 are arranged in overlapping horizontal planes, so that the weft thread needles do not cross each other during insertion. The plastic filament weft needle 6 then enters the thread 1 above the further warp thread 13 and the base weft needle 9 enters the further trowel thread 13. The supporting belt base weft threads 10 are arranged approximately in the weaving direction between the warp threads 15 for wrapping from both fastener element rows 8K, i.e. like the warp threads at weaving position 3.
, and is also supplied via the guide device 11,
This guide device is arranged in the center of the thread channel 1 between the intruding weft thread needle of the weft thread insertion device 2 and the thread forming mechanism.

The gripping mandrel 5 mentioned at the beginning is a mandrel holder which is bendable and is arranged in the weaving direction in front of the weaving station 3 and after the guide device 11 in the center of the channel 1 and which is movable up and down. 4, the end remote from the weaving position 3 is movable. On the other hand, the mandrel holder 4 has a guide 18
It is cantilevered by a tappet device 19 and is movable between a single high position and a single low position together with an additional retaining device (not shown) (for example a magnet or a shaft of a channel forming mechanism). The guide 18 is cut away in the middle in order to allow deflection of the catching mandrel 5 by the plastic filament thread 7 when the mandrel holder 4 is in the high or low position. In order to prevent them from being pulled together too much, there are spacers 2 for the warp threads 15 located here on both sides of the mandrel holder 4.
o is provided.

In this embodiment, weaving position t3 on the outside of another warp thread path 13
The crochet device 2 is lined up with the zipper guide 21 within the range of
2 are provided so that the support belt base weft 100 inverted loops 23 can be crocheted into tissue edges. After the thread movement, the reeling of the weft threads 7, 1o in the form of a double weft takes place with a reed.

As is clear from a comparative examination of the figures, the tip of the base weft thread 9 has a turning protrusion 24 for the supporting belt base weft thread 1O to be accommodated. Yarn storage notch 1 following the turning protrusion 24
2 is provided in the path of the turned support belt base weft yarn 10. Regarding the turning of the support belt base weft yarn 10, particularly FIG. 4 is referred to, and here, the support belt base weft yarn 1o is shown by a solid line when it is not turned, and by a broken line when it is turned. These threads are, so to speak, bent.

In FIGS. 1, 2 and 3, a faulty warp thread Kfa is shown. As is clear from FIG. 3, the turned base weft thread 1o reliably enters the thread accommodation notch 12 corresponding to this turning, but on the other hand, the obstructed warp thread Kfs enters the turning protrusion 2.
4 and is not carried into the thread receiving notch 12. In FIG. 1, the tip area of the base weft needle 9 on the left side is shown cut away in order to clearly show the important measures of the invention on the right side. For the same reason, only the base weft needle 9 is shown in FIG. The base weft needle 9 at the lower left in FIG. 1 is not shown.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a part of an apparatus constructed for carrying out the method according to the invention, FIG. 2 is an enlarged view of part A of the apparatus shown in FIG. 1, and FIG. , a perspective view of the apparatus of FIG. 2, and FIG. 4 a side view of the apparatus of FIG. DESCRIPTION OF SYMBOLS 1... One path, 2... Weft thread insertion device, 3... Weaving position, 4... Mandrel holder, 5... Capture mandrel, 6...
- Plastic filament weft needle, 7... Plastic filament thread, 8... Fastener element row, 9
... Base weft thread needle, 10... Support belt base weft thread, 11... Guide device, 12... Yarn storage notch, 1
3...Warp thread, 14.15...Warp thread, 16.
...Support belt part, 24...Turning protrusion

Claims (4)

[Claims] (1) Two plastic filament yarns are wrapped around a cantilevered capture mandrel simultaneously in opposite directions in the weaving position to form a connected row of fastener elements, and intertwined with the warp yarns by a threading motion; Both plastic filament threads are inserted by means of a plastic filament weft needle as double weft threads into the thread halves at the same level and at the end of the capture mandrel which is in front of the weaving position in the weaving direction and moves up and down here. thread between both legs of each plastic filament double weft thread, and inserting the preceding supporting belt base weft thread together with the plastic filament thread into another warp thread and intertwining with the warp threads, these supporting belt threads are A base weft needle that guides the base weft threads via a weft thread guide device in the central region of the width of this warp thread channel and that has an open thread receiving notch and a deflection projection in the area between the weft thread guide device and the weaving position. In a method for manufacturing a fastener belt having a row of fastener elements made of plastic filaments and a fabric support belt by weaving, the support belt base weft thread (10) is inserted into a weft thread guide device (
Yarn receiving notch (12) which is bent by the deflecting projection (24) at 11) and directed towards the deflecting support belt base weft thread (10) which follows the deflection projection (24) and is deflected in the direction of movement of the base weft needle (9) Weaving, characterized in that the obstructed warp threads (Kfs) that have moved inward and penetrated into the movement path of the base weft thread needles (9) pass through the thread receiving notches (12) by means of correspondingly formed deflection projections (24). A method of manufacturing a zipper belt. (2) A thread forming mechanism, a weft thread insertion device arranged on both sides of the thread and operable at the same time, and an end in front of the weaving position supported by a vertically movable mandrel holder and placed in the center of the thread. It consists of a loom with arranged catch mandrels, in which the weft thread insertion device inserts and removes the plastic filament threads for the fastener element row, a plastic filament weft needle, and an additional base weft needle, which simultaneously inserts the support belt base weft thread. in the weaving direction, in front of the gripping mandrel and in the center of the thread, a guide device is provided for the support belt base weft thread, which is fed into the weaving position approximately in the weaving direction, and for the support belt base weft thread to be fed into the weaving position approximately in the weaving direction. In a device for producing fastener belts with a row of fastener elements made of plastic filaments and a textile support belt by weaving, the corresponding base weft needles have thread-receiving notches and deflection projections open in the area of their free ends, the base weft needles (9) ) has a wedge-shaped profile with a deflection wedge surface, viewed in the direction of movement of the base weft thread insertion, and the thread receiving notch (12) adjoining the deflection projection (24) has a deflected support. A device for producing fastener belts by weaving, which is adapted to the path of the belt base weft threads (10) and is characterized in that the obstructed warp threads (Kfs) can pass through the thread receiving notches (12) by means of deflection projections (24). (3) The turning protrusion (24) of the base weft thread needle (9), when projected onto the plane of movement of the base weft thread needle (9), is approximately half the width of the needle, and the thread accommodation notch (12) follows this. 3. The device according to claim 2, wherein the bottom surface of the notch extends obliquely to the plane of movement of the base weft needle (9). (4) The device according to claim 2 or 3, wherein the deflecting projection (24) and the thread receiving notch (12) of the base weft thread needle (9) are smoothed by polishing.