JPS5846153A - Production of fabric and 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 A loom, in which the strips follow each other periodically for a given distance, and then the rolls of fabric are separated at their plugging locations, In particular, it relates to the production of fabrics on circular looms, especially bag fabrics.

For example, the manufacturing method of bag fabric as described above for manufacturing bags is such that a suitable percentage of special weft filling is obtained for both the edge of the bag and the bottom of the bag. A fundamental drawback is that it is difficult to cut a roll of fabric precisely at the location of the weft blockage at any time. Therefore, in the past, cutting machines had to be adjusted and used by the operator at certain selected and specific cutting locations, which could not meet today's demands for rational manufacturing.

In order to effectively improve this situation, in the method according to the invention □ the fabric is provided with readable or scannable registration markings, each corresponding to the longitudinal distance between the fillings of the weft threads. The roll of fabric is then cut according to the alignment markings and then allowed to advance.

According to another possible feature of the method according to the invention, the alignment markings are applied to the fabric synchronously with the periodic clogging of the fabric.

Other possible features include matching markings, colored markings and/or
Formed by an electromagnetically readable printed indicia.

Clearly, in this case, the roll of fabric prepared according to the method described above is suitable for use on a conventional cutting machine for the cutting machine to scan or read the alignment markings on the roll of fabric. As long as known means are provided, the separation can be performed accurately and completely automatically.

The invention also provides for carrying out the method according to the invention,
The present invention also relates to a weaving machine having a device for controlling the sequence of weft thread insertions to form a blockage of weft threads that periodically follow each other at a given distance.

In the loom according to the invention, the fabrics are arranged on the loom in the area of one turn of the fabric and are aligned on one fabric at a distance corresponding to the longitudinal distance between the blocks of weft threads. There is a marking device for marking.

In another possible feature of the loom, the indicating device is synchronously connected to a control device for the wefting sequence of the weft threads.

Alternatively, the structure on the circular loom is such that the marking device is arranged within the area of the place where the tubular fabric is laid flat, and also at least one of the folded greens of the laid flat fabric. and at least one marking mechanism for applying alignment markings along the markings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus of the present invention will be explained below based on drawings showing embodiments thereof.

The figure shows a circular loom with a warp thread (upper hole) and a warp thread 3.
It is shown by a part of the fabric woven together with a lower part of the fabric formed by the lower part of the part. The weft passes through Hiro and is inserted by Shirttle J0, but
The shirt torque 0 is guided along a horizontal circular path.
It is inserted horizontally in the area between l and the lower guide ring here, but in the nearby area, the shirttle λ0
The weft thread positioning ring-23 above is immersed. The upper and lower shields are formed in a known manner by means of a belt.

The cylindrical fabric l woven in this way is pulled up ten thousand times, capped flat in the area of the pulling row wefts 5 (only one is shown) and then flattened. It is transported forward in the direction indicated by the arrow 6 for further processing in the shape it is placed in.

In this way, the fabric laid flat is fed into a cutting machine (not shown) and subsequently fed into a cutting machine to form a reinforced edge on the finished product. In order to produce a weft block formed by transverse strips following each other periodically at a distance of It has a suitable control device 10. In the illustrated embodiment, the controller IO
is simply indicated by the camshaft.

According to the invention, - the turns of fabric I can each be cut in the transverse direction so that the turns of fabric I can be cut precisely with respect to the weft thread density formed by the strips in the transverse direction. The longitudinal distance of the weft threads 9 extending is provided with readable or scannable registration markings, and the rolls of fabric are separated according to the registration markings; Steps are being taken that can be taken forward. In other words, the continuous distance in the transverse direction (between the extending weft threads and the individual markings 15) should be kept constant.

For this purpose, a suitable marking device arranged on the loom in a manner not shown in detail is shown in the figure.
As indicated by 1114, it is advantageous to be activated by the control device lOK for the wefting sequence of the weft threads. ), this printing mechanism places registration marks lj along one folded edge of the fabric, or along both of the folded edges.

Preferably, the marking device/J (see figure) is arranged in the area where the tubular fabric is laid flat, at the location of the rollerco S shown.

The thermal theory, the nature of the marking device/-, the location on which it is used on the fabric and its control device synchronized to the filling of the weft threads can be selected as required according to the invention. ◎For example, the method according to the present invention can be easily installed on a flat loom.

Similarly, alignment markings to be applied l! can be of any desired kind. For example, the alignment mark IS is
Colored signs and/or signs that can be read electronically are also acceptable. In this case, the thermally subsequent cutting machine must be equipped with a suitable device for scanning or reading the alignment markings on the roll of fabric.

These steps according to the invention therefore ensure that a roll of fabric having a filling of weft threads following each other periodically at a given distance is cut precisely and completely automatically. to be able to be

[Brief explanation of the drawing]

The figure is a schematic representation of an embodiment of the invention.

Claims (1)

[Claims] / Transverse slips forming a blockage of the weft threads) The lips periodically follow each other at a given distance, - such that the turns of fabric are separated at those places. Weaving on looms, especially circular looms,
In particular, in the method of manufacturing bagging fabrics, the fabric is provided with readable or scannable registration markings, each corresponding to the longitudinal distance between fills of weft threads, and - turns of the fabric are marked with registration markings. A method characterized in that the method is characterized in that the method is characterized in that: 2. A special feature in which the alignment mark is applied to the fabric in synchronization with the periodic clogging of the weft threads! 3. The method according to claim 1 or 2, wherein the matching mark is formed by a colored mark and/or a printed mark that can be electromagnetically removed. even In a loom equipped with a device for controlling the sequence of weft insertion of one weft thread in order to form a blockage of weft threads that periodically follow each other at a given distance, a marking device for marking a registration mark on the roll of fabric at a distance corresponding to the longitudinal distance between the fills of the weft threads arranged within the web of the fabric; A loom characterized by: A loom according to claim 9, wherein the indicating device is synchronously connected to a control device for the weft insertion sequence of the weft threads. The marking device is arranged in the box at the place where the tubular fabric is laid flat, and the marking device is arranged to place an alignment mark on at least one of the folded edges of the laid flat fabric. A loom as claimed in claim 1 or jrJi, consisting of at least seven printing mechanisms for applying along the fabric.