JPH0312026B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for spreading cloth and a spreading machine.

In general, fabrics are wound up into large rolls when they come out of the loom, so when cutting or other processing is to be performed on these fabrics, they must first be unrolled and cut to the required length. This requires work such as stacking and folding. For this purpose, a roll-shaped fabric placed on the spreading machine body is spread onto the workbench by a spreading machine body that can reciprocate in the spreading direction on a horizontally installed workbench. Spreading methods and machines have been developed in the past.

As such a spreading machine, Japanese Patent Application Laid-Open No. 58-119550
No. 58-139971. In the latter case, independent servos are used to drive the main body of the spreading machine, rotate the unraveling roller that unravels the rolled fabric, and rotate the unwinding roller that feeds the fabric onto the workbench. This is done by motors, and by appropriately synchronizing the rotations of these servo motors, the spreading is carried out smoothly, and the spread fabric is not dragged or sagged. According to this, even without a catcher,
It is now possible to spread the fabric as described above.

However, in any of the conventional spreading machines, the starting end of the fabric is fed out in a state almost parallel to the fabric that has already been spread and stacked on the workbench, and then the main body of the fabric spreading machine starts running. Therefore, it is possible to spread the fabric in one direction without a catcher, but if you try to spread the fabric in the opposite direction, the fabric will be twisted or wrinkled, and the edges of the stacked fabrics will be uneven. There is a drawback. Also,
Even when performing the conventional fold-folding process, if you cut the fabric at both ends of the fold-fold fabric and try to spread it, the fabric will be twisted or wrinkled, and the edges will be uneven. In either case, it was difficult to perform the spreading completely automatically and unmanned.

The present invention was made in view of the above-mentioned circumstances, and an object thereof is to prevent twisting or wrinkles from occurring at the starting end side of a stretched fabric, and to improve the alignment of the ends. This makes it possible to accurately align the edges even in the conventional folded and both-ends-cut stretched fabric, and to make it possible to substantially prevent the fabric from twisting or wrinkling.

The technical means of the present invention is that at the stop end of the traveling section of the main body of the spreading machine, the end of the fabric is fed out for a certain length almost vertically downward, suspended above the workbench, and moved in the spreading direction above the workbench. The processing is performed by passing a possible processing rod from the center of the traveling section to the outside of the stop end so as to rub the lower surface of the end of the cloth, and then passing through the main body of the cloth spreading machine. A method for spreading a sheet, and
A feed-out roller that feeds out the cloth in a substantially vertical direction downward, and a feed-out roller that is arranged in a direction parallel to the workbench and perpendicularly across the cloth spreading direction, and that reciprocates back and forth in the cloth spreading direction across the feed-out position of the cloth. The paper spreading machine is characterized in that a possible sorting rod is provided on the main body of the paper spreading machine.

Hereinafter, the present invention will be explained based on examples and with reference to the drawings.

Figures 1 and 2 are schematic diagrams of a spreading machine, and
A spreader main body 2 is configured to run in the left-right direction in FIG. 1 on a horizontally installed workbench 1. The spreading machine main body 2 includes wheels 3 for running, an unraveling roller 4 for unraveling the roll-shaped fabric C, a feeding roller 5 for feeding out the fabric C vertically downward, and rotating in synchronization with the feeding roller 5. a conveyor 6 connected to
A pair of guide plates 7 that guide the cloth C fed out by the feed roller 5 so that it hangs directly below the lashes, a cutter unit 8 for cutting the cloth C in the width direction at a predetermined position, and an end portion of the cloth C A sorting device 9 for sorting is provided.

The wheels 3, the unraveling roller 4, and the feeding roller 5
is controlled and driven by a pulse motor, DC servo motor, etc. so that its rotational speed and number of revolutions are closely related to each other. The structure and operation of this part, except for the operation at the starting end of the spreading, are similar to those of the above-mentioned Japanese Patent Application Laid-Open No. 1983-1999.
Since this is a publicly known method as described in Japanese Patent No. 139971, detailed explanation will be omitted.

Referring also to FIG. 3, the sorting device 9 includes two arms 10, 10 that are rotatable about the same horizontal axis as a rotation axis, and are connected between the tips of both arms 10 to rotate in the running direction. It has an angular handling rod 11 extending in the vertical direction, and a gear motor (not shown) is connected to one arm 10. As shown in FIG. It is designed to be rotated within a range of about 100 degrees. Due to the rotational drive of the arm 10, the handling rod 11 is moved to the downwardly feeding position P of the cloth C.
It is designed to perform a rocking motion to the left and right in the direction of spreading the cloth with the two sides in between, and to handle the drooping ends of the cloth C.
For example, as shown by the solid line in FIG. 3, when the fed-out cloth is hanging down with wrinkles and twists on the already spread cloth C1 on the workbench 1, the arm 10 is moved as shown by the solid line in the figure. By moving from the left end shown to the right end shown by the imaginary line, the handling rod 11 passes as if rubbing against the lower surface of the end of the cloth C, and the handling rod 11 moves as shown by the imaginary line. It is spread in different directions to create a natural state with no wrinkles.

Therefore, if the stopping position of the fabric spreading machine main body 2 on the workbench 1 and the rotation speed of the feeding roller 5 are controlled to keep the feeding length of the fabric C constant,
The starting ends of the rolled fabric C1 can be aligned. In this case, in order to keep the length of the feed roller 5 at the end constant, or to adjust it to the length that will allow the best separation and alignment of the edges, the motor that drives the feed roller 5 is set to a timer. Operate only for some regulated time or
Alternatively, the total number of rotations may be controlled.

Now, how the operation of this spreader is controlled will be explained next.

FIG. 4 is a flowchart showing the outline of the operation when performing unidirectional spreading with a spreading machine, in which the main body refers to the spreading machine main body 2, and its direction is shown in FIG. 1. and FIG. 2 as a reference, the left direction in these figures is the forward direction, and the right direction is the backward direction. To add a little explanation to this flowchart, first, while the main body is stopped at the stop end of the traveling section (here, the retreat end), the cloth C is fed out by the rotation of the feeding roller 5, and then Therefore, the cloth C is in the state shown in FIG. Next, the handling rod 11 moves to the right and handles the cloth C, resulting in the state shown by the imaginary line in the figure. after that,
The fabric spreading machine main body 2 moves forward and feeds out the fabric C to spread the fabric, but at the time of starting and stopping the running,
In order to prevent wrinkles from forming on the rolled fabric and to reduce shock, the machine runs at a low speed. At the forward end, the cutter unit 8 is operated to cut the cloth C in the width direction, so that the cloth C is stretched to a constant length and at a constant position. Thereafter, the handling rod 11 moves to the left and returns, and the spreader main body 2 moves backward and returns to the stop position at the backward end. This completes one cycle, and this is repeated to spread the required number of sheets.

When the main body 2 of the fabric spreading machine moves forward and spreads the fabric, the fabric may be blown by the wind depending on its running speed and the material of the fabric. It is possible to achieve even smoother spreading by lightly touching the guide plate to act as a guide, or by designing the guide plate at an appropriate position.

As mentioned above, by grading the fabric with the grading rod 11 at the starting end of the fabric, there are almost no wrinkles in the fabric, and the edges are evenly aligned with an error of less than a centimeter. A satisfactory result was obtained. The above flowchart is for unidirectional spreading, but
In addition, it can also be applied to unidirectional middle-face spreading and folded spreading, and FIG. 6 is an example of a flowchart in which both ends of the folded fabric are cut to perform the spreading.

In the above-described embodiment, the handling rod 11 is swung by the arm 10, but the point is that the handling rod 11 may be moved from side to side to handle the ends of the cloth C. For example, as shown in FIG. 5, both ends of the handling rod 11 may be attached to piston rods 13 of a horizontally provided hydraulic cylinder 12, so that it can reciprocate only in the horizontal direction. The handling rod 11 has an angled shape, but
A square pipe shape, a round pipe shape, a round bar, etc. may also be adopted. By selecting the material of the grading rod 11 or applying an appropriate coating to the surface of the grading rod 11, the friction between the fabric and the grading rod 11 during grading can be adjusted to an appropriate level to prevent wrinkles. It is possible to obtain an optimal state with good repeatability without the occurrence of.

As described above, according to the present invention, it is possible to almost completely eliminate the occurrence of twisting or wrinkles at the starting end of the fabric being stretched. Moreover, since the feeding length of the end of the fabric hanging on the workbench is constant, the handling rod is moved along the bottom surface of the edge of the fabric from the center of the running section of the spreading machine to the outside of its stop end. By passing through and sorting, the ends of the rolled fabric are always located in a fixed position, so that the ends can be reliably aligned with high precision. Therefore, by using the method or apparatus of the present invention, it is possible to fully automate not only the conventional one-way spreading and middle-face spreading, but also the rolling process in which both ends are cut in the folded spreading process. It becomes possible.

[Brief explanation of the drawing]

The drawings are examples of the present invention, and FIG. 1 is a schematic front view of the spreading machine as seen from a direction perpendicular to the running direction;
Fig. 2 is a schematic diagram of the right side with a part omitted, Fig. 3 is an enlarged view of the sorting device, Fig. 4 is a flowchart, and Fig. 5 shows another embodiment of the sorting device. The figure shown in FIG. 6 is a flowchart showing another example. C... Cloth material, P... Feeding position, 1... Work table, 2... Fabric spreading machine body, 5... Feeding roller, 7
...Guide plate, 11...Sabaki rod.

Claims (1)

[Scope of Claims] 1 A roll-shaped fabric placed on the fabric spreading machine body is stretched to a required length by a fabric spreading machine body that can reciprocate in the fabric spreading direction on a horizontally installed workbench. In the method of spreading the fabric by cutting it into lengths and spreading it on the workbench, the end of the fabric is let out for a certain length approximately vertically downward at the stop end of the running section of the spreading machine main body, and the work is carried out. A handling rod that hangs over the table and is movable in the cloth spreading direction above the work table is passed from the center side of the traveling section to the outside of the stopping end side so as to rub the lower surface of the end of the cloth. 1. A method for spreading a web, characterized in that the spreading machine body is run after the spreading machine is moved. 2 The roll-shaped fabric placed on the spreading machine body is cut into the required spreading length by a spreading machine body that can reciprocate in the spreading direction on a horizontally installed workbench. and a feed-out roller for feeding out the cloth in a substantially vertical direction downward, and a feed-out roller disposed parallel to the work table and perpendicularly crossing the cloth spreading direction; A cloth spreading machine, characterized in that the cloth spreading machine main body is provided with a handling rod that can reciprocate back and forth in the cloth spreading direction across the feeding position of the cloth.