JPS60204557A - Method and machine for unwinding cloth - Google Patents

Abstract

PURPOSE:To make almost zero the occurrence of a backward bend or a wrinkle in the front end portion of a wound cloth and accurately true up the side edges of the cloth, by jerking the front end of the wound cloth to be unwound. CONSTITUTION:The front end portion of a wound cloth C is hung almost vertically by a prescribed length down onto a worktable 1, at the stop end of the travel path of the body 2 of a cloth unwinder. The front end portion of the wound cloth C is jerked in the direction from the center of the travel path toward the stop end thereof, by a jerking rod 11 movable in the direction of unwinding of the cloth, over the worktable 1. After that, the cloth unwinder body 2 is caused to travel. According to this constitution, the occurrence of a backward bend or a wrinkle in the front end portion of the wound cloth C is made almost zero, and the side edges of the cloth are accurately trued up, so that the complete automation of the unwinding of the wound cloth C is enabled.

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 off the loom, so when cutting or other processing is to be performed on these fabrics, they must be unwound and cut to the required length in advance. This requires work such as stacking and folding. For this purpose, a roll-shaped fabric placed on the spreading machine body is spread on the workbench by a spreading machine body that can reciprocate in the spreading direction on a horizontally installed workbench. Reversing methods and spreading machines have been developed in the past.

As such a spreading machine, Japanese Patent Application Laid-Open No. 58-119550
There is a method described in Japanese Patent Application Laid-open No. 58-139971. Among these, the latter includes driving the main body of the spreading machine, rotational driving of the unraveling roller that unravels the roll-shaped cloth,
The rotation of the feed-out roller that feeds out the cloth onto the work table is driven by independent servo motors, and by appropriately synchronizing the rotations of these servo motors, the spreading of the cloth is smooth and the rolled cloth is This prevents it from pulling or sagging. Moreover, according to this, the above-mentioned spreading can be performed without providing a catcher.

However, in any of the conventional spreading machines, the main body of the spreading machine runs immediately after the starting end side of the spread fabric is properly fed out, so that the starting end side of the spreading fabric is However, it is difficult to completely eliminate the occurrence of folding or wrinkles, and therefore it is difficult to completely eliminate the occurrence of folds or wrinkles. The problem was that it was not possible to do so.

For this reason, although it has been possible to automate the spreading process, it has not yet reached the point where it is completely unmanned.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to almost completely eliminate the occurrence of folding or wrinkles at the end of the stretched fabric on the starting end side.

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. A method for spreading cloth, characterized in that the ends of the cloth are separated from the center side of the traveling section to the stop end side using a flexible separating rod, and then the main body of the cloth spreading machine is made to travel.
and a feed-out roller that feeds out the cloth in a substantially vertical direction downward, which is arranged parallel to the workbench and perpendicular to the cloth spreading direction, and is capable of reciprocating in the cloth spreading direction across the feed-out position of the cloth. The paper spreading machine is characterized in that a cutting 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.

FIGS. 1 and 2 are schematic diagrams of a spreading machine, in which a main body 2 of the spreading machine runs in the left-right direction in FIG. 1 on a horizontally installed workbench l. The spreading machine main body 2 includes wheels 3 for running, and an unraveling roller 4 for unraveling the roll-shaped cloth C.
, a feed-out roller 5 that feeds out the fabric C vertically downward, a conveyor 6 connected to rotate in synchronization with the feed-out roller 5, and a pair that guides the fabric C fed out by the feed-out roller 5 so that it hangs straight downward. guide plate 7,
A cutter unit 8 for cutting the cloth C in the width direction at a predetermined position, and a separating device 9 for handling the ends of the cloth C are provided.

The wheels 3, the unraveling roller 4, and the feeding roller 5 are controlled and driven by a pulse motor, a DC servo motor, etc. so that their rotational speeds and rotational speeds maintain a close relationship with each other. The fabric is sequentially spread on a table L and many sheets are stacked one on top of the other, and the structure and operation of this part, except for the operation at the starting end of the fabric, are as described in the above-mentioned Japanese Patent Application Laid-Open No. 139971/1983. Since it is a well-known method as described above, a detailed explanation will be omitted.

Referring also to FIG. 3, the sorting device 9 has two arms 10 and 10 that can rotate about the same horizontal axis as a rotating wheel, and an arm that is connected between the tips of both arms 10 and is perpendicular to the running direction. It has an angled handling rod 11 extending in the direction, and one arm 10 is equipped with a gear motor (not shown).
are connected to each other, and as shown in FIG. 3, they are rotatably driven to the left and right within a range of about 5 degrees each about a vertical line. By rotationally driving the arm 10, the handling rod 1
1 is a cloth C that swings left and right in the spreading direction across the downwardly fed out position P of the cloth 5C, and the cloth C hangs down.
It is designed to handle the edges of the For example, as shown by the solid line in FIG. 3, when the fed-out cloth is hanging down with wrinkles and folds on the already spread cloth CI on the workbench 1, the arm 10 is moved as shown by the solid line in the figure. By moving from the left end to the right end indicated by the imaginary line, the processing rod 1
1 passes by scooping up the lower surface of the end of the cloth C, and the cloth C is divided in the direction in which the separating rod 11 moves as shown by the imaginary line, so that the cloth C is in a natural state without wrinkles.

Therefore, if the stopping position of the fabric spreading machine 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 end of the fabric C1 that has been spread can be The ears can be aligned. In this case, in order to keep the length of the feed by the feed roller 5 at the end constant, or to adjust it to the length that will allow the best separation and alignment, the motor that drives the feed roller 5 may be adjusted by a timer. It is only necessary to operate the motor for a specified period of time, or to control the total number of revolutions.

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 the direction is as shown in FIG. Based on FIG. 2, the left direction in these figures is the forward direction, and the right direction is the backward direction. To add some 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 feed roller 5. The state shown in FIG. 3 is reached. 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 running, it is necessary to prevent wrinkles from occurring in the spread fabric and to reduce shock. The vehicle is now driven at low speed. At the forward end, the cutter unit 8 is operated to cut the cloth C in the width direction, and as a result, the cloth is stretched to a constant length and at a constant position. Thereafter, the sorting rod 11 moves leftward and returns, and the spreader main body 2 moves backward and returns to the stop position at the backward end. This completes the cycle, which is repeated to spread the required number of sheets.

When the fabric spreading machine body 2 is moving forward and spreading the fabric, the fabric may be blown by the wind depending on its running speed and the material of the fabric. By designing the guide plate at an appropriate position, it is possible to perform the spreading with even more force (force).
can.

As mentioned above, by subjecting the starting end of the rolled fabric to one treatment using the handling rod 11, there are almost no wrinkles on the rolled fabric, and the edges of the fabric are completely removed. Satisfactory results were obtained with an error of less than a centimeter in alignment.The above flowchart is for the case of one-way spreading; It can also be applied.

In the above-mentioned embodiment, the rotation rod 11 is swung by the arm 10, and the rotation rod 11 is moved from side to side to shift the end of the cloth C by a distance Lf.

For example, as shown in Fig. 5, both ends of the rod 11 with the number f are attached to the piston mouth/nod 13 of the hydraulic cylinder IJ cylinder 12 provided in the horizontal direction, so that the main movement is performed only in the horizontal direction. Even if it's good, it's good. If the mouth and throat are 11-degree angle-shaped, a four-sized vibrator, a round vibrator, or a round rod may be used. By selecting the material of the sorting rod 11 or applying an appropriate coating to the surface of the sorting rod 11, the friction between the cloth and the sorting rod 11 during sorting can be made appropriate, and wrinkles can be prevented. It is possible to obtain an optimal state with good repeatability.

As described above, according to the present invention, by handling the starting end of the fabric to be rolled, it is possible to almost completely eliminate the occurrence of folding or wrinkles in this part.
Furthermore, it is possible to perform ear alignment with high precision. Therefore, by using the method or apparatus of the present invention, it becomes possible to completely automate the spreading.

[Brief explanation of drawings]

The drawings show examples of the present invention, in which 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 right side view with a portion omitted, and FIG. The figure is an enlarged view of the processing device, and Figure 4 is a flowchart.
FIG. 5 is a diagram showing another embodiment of the sorting device. C...cloth, P...feeding position, 1...workbench,
2. Spreading machine main body, 5. Feeding roller, 7. Guide plate, 11. Sorting rod. Applicant NCA Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Procedure Amendment (voluntary) October 7, 1981 (Patent Office Examiner) 1. Indication of the case 1988 Patent Application No. 64538 2, Title of the invention: Spreading method and machine 3; Relationship with the case of the person making the amendment: Applicant: Place of residence: Name: NCA Co., Ltd. (2) Figure 6 of the drawing is attached. Add as follows. - Full text corrected specification 1, title of the invention: method and spreading machine 2, claim 1, the spreading machine is formed by a main body of the spreading machine that can reciprocate in the spreading direction on a horizontally installed workbench. In the method of spreading a roll-shaped cloth placed on a main body onto the workbench, the end of the cloth is moved downward in a substantially vertical direction by a certain length at the stop end of the traveling section of the cloth spreading machine main body. It is fed out and hung onto the workbench, and the end portion of the cloth is sorted toward the center side of the traveling section or the end end side of the running section by a sorting rod that is movable in the forward and unrolling direction above the workbench; A spreading method characterized in that the spreading seven main body is then run. In the spreading machine, a roll-shaped fabric placed on the spreading machine is spread on a horizontally installed workbench in the spreading direction by the main body of the spreading machine, which is readable in the spreading direction. a feed-out roller that feeds out the cloth in a substantially vertical direction downward; and a feed-out roller that is disposed parallel to the workbench and perpendicular to the cloth spreading direction and is movable back and forth in the cloth spreading direction across the feeding position of the cloth. A spreading machine characterized in that a separating rod is provided on the main body of the spreading machine. 3. 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 carried out on these fabrics, they must be unrolled and cut to the required length in advance. It requires cutting, stacking, and folding. For this purpose, a roll-shaped fabric placed on the spreading machine body is spread on the workbench by a spreading machine body that can reciprocate in the spreading direction on a horizontally installed workbench. Reversing methods and spreading machines have been developed in the past. As such a spreading machine, Japanese Patent Application Laid-Open No. 58-119550
be. In the latter, independent servo drives 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 rolled fabric is prevented from being pulled or sagging. Moreover, according to this, the above-mentioned spreading can be performed without providing a catcher. However, in all 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 runs. 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 folding process, creases occur at both ends, so if the fabric is hard, creases are difficult to form, and it is not possible to align the folds at both ends vertically. If you try to cut and spread the fabric, it will be twisted or wrinkled, and the edges will be uneven, resulting in loss of fabric. It was difficult to make it 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. year,
To make it possible to align the edges even if the folded fabric is cut and rolled without making a wavy part in the folded fabric in conventional folded fabric, and to hardly cause any twisting or wrinkles in the fabric. This is what makes it possible. 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. A method for spreading cloth, characterized in that the ends of the cloth are separated from the center side of the traveling section to the stop end side using a flexible separating rod, and then the main body of the cloth spreading machine is made to travel.
and a feed-out roller that feeds out the cloth in a substantially vertical direction downward, which is arranged parallel to the workbench and perpendicular to the cloth spreading direction, and is capable of reciprocating in the cloth spreading direction while sandwiching the cloth feeding position. The paper spreading machine is characterized in that a cutting 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. FIGS. 1 and 2 are schematic diagrams of a spreading machine, in which a main body 2 of the spreading machine runs 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, and an unraveling roller 4 for unraveling the roll-shaped cloth C.
, a feed-out roller 5 that feeds out the fabric C vertically downward, a conveyor 6 connected to rotate in synchronization with the feed-out roller 5, and a pair that guides the fabric C fed out by the feed-out roller 5 so that it hangs straight downward. guide plate 7,
A cutter unit 8 for cutting the cloth C in the width direction at a predetermined position, and a separating device 9 for handling the ends of the cloth C are provided. The wheels 3, the unraveling roller 4, and the feeding roller 5 are controlled and driven by a pulse motor, a DC servo motor, etc. so that their rotational speeds and rotational speeds maintain a close relationship with each other. The fabric is sequentially spread on a table L and many sheets are stacked one on top of the other, and the structure and operation of this part, except for the operation at the starting end of the fabric, are as described in the above-mentioned Japanese Patent Application Laid-Open No. 139971/1983. Since it is a well-known method as described above, a detailed explanation will be omitted. Referring also to FIG. 3, the sorting device 9 has two arms 10 and 10 that can rotate about the same horizontal axis as a rotating wheel, and an arm that is connected between the tips of both arms 10 and is perpendicular to the running direction. It has an angled handling rod 11 extending in the direction, and one arm 10 is equipped with a gear motor (not shown).
As shown in FIG. 3, they are rotatably driven left and right about a vertical line within a range of about 100 degrees. It performs rocking motion to the left and right in the spreading direction across the downwardly drawn out position P of the cloth C, and handles the hanging 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 1o is moved as shown by the solid line in the figure. By moving from the left end to the right end indicated by the imaginary line, the processing rod 11 passes as if scooping the bottom surface of the end of the cloth C, and cuts the cloth C in the direction in which the processing rod 11 moves as shown by the imaginary line. It will be in a natural state without peeling and wrinkles. Therefore, if the stopping position of the fabric spreading machine 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 end of the fabric C1 that has been spread can be can be arranged. 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. It may be operated only for a certain adjusted time, or 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 the direction is as shown in FIG. Based on FIG. 2, the left direction in these figures is the forward direction, and the right direction is the backward direction. To add some 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 feed roller 5. The zero-order sorting rod 11 moves to the right and sorts the cloth C, resulting in the state shown in FIG. 3 as 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 running, it is necessary to prevent wrinkles from occurring in the spread fabric and to reduce shock. The vehicle is now driven at low speed. At the forward end, the cutter unit 8 is operated to cut the cloth C in the width direction, and as a result, the cloth is stretched to a constant length and at a constant position. Thereafter, the sorting rod 11 moves leftward and returns, and the spreader main body 2 moves backward and returns to the stop position at the backward end. This completes the cycle, which is repeated to spread the required number of sheets. When the fabric spreading machine body 2 is moving forward and spreading 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 having the guide plate lightly hit against the guide plate to act as a guide, or by designing the guide plate at an appropriate position. As mentioned above, by using the cutting rod 11 to judge the starting end of the spreading process, the spread fabric is almost completely free of wrinkles, and the edges are evenly aligned with a difference of less than a centimeter. A satisfactory result was obtained. The above flowchart is for the case of one-way spreading, but it can also be applied to one-way middle-face spreading and folded spreading. This is an example of a flowchart when spreading is performed. In the above embodiment, the handling rod 11 is connected to the arm 1.
0, but the point is that the ends of the cloth C can be handled by moving left and right.For example, as shown in FIG. The handling rod 11 may be attached to the piston rod 13 of the fluid pressure cylinder 12 to perform reciprocating motion only in the horizontal direction.Although the handling rod 11 has an angle shape, it may also have a square pipe shape, a round pipe shape, or A round bar, etc. may be adopted.By selecting the material of the sorting rod 11 or by applying an appropriate coating to the surface of the sorting rod 11, the friction between the cloth and the sorting rod 11 during sorting can be reduced. It is possible to obtain an optimal condition with no wrinkles and good repeatability by selecting a suitable material.As described above, according to the present invention, by performing the handling at the starting end of the cloth to be stretched, this can be achieved. By using the method or device of the present invention, it is possible to almost completely eliminate the occurrence of twisting or wrinkling of parts, and also to align the edges with high precision.Therefore, by using the method or device of the present invention, It will become possible to fully automate not only one-way spreading and mid-face spreading, but also the spreading process in which both ends are cut during folded spreading. 4. Brief explanation of drawings The drawings are in this book. An embodiment of the invention, 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 right side view with 7 parts omitted, and Fig. 3 is a side view of the spreading machine. A diagram showing an enlarged view of the device part, FIG. 4 is a flowchart,
FIG. 5 is a diagram showing an embodiment of the sorting device, and FIG. 6 is a flowchart showing another example. C...cloth, P...feeding position, 1...workbench,
2... Spreading machine main body, 5... Feeding roller, 7...
Guide slope, II...Sabaki rod.

Claims (1)

[Scope of Claims] / A roll-shaped fabric placed on the spreader body is moved onto the workbench by a spreader body that can reciprocate in the spreading direction on a horizontally installed workbench. In the method for spreading the cloth, the end of the cloth is let out for a certain length substantially vertically downward at the stop end of the running section of the cloth spreading machine main body, and is suspended over the workbench. The cloth spreading machine is characterized in that the end portion of the cloth is divided from the center side of the traveling section to the stop end side by a handling iron movable in the cloth spreading direction, and then the cloth spreading machine main body is made to travel. Method. 2. A spreading machine that spreads a roll-shaped cloth placed on the spreading machine body onto the workbench by a spreading machine body that can reciprocate in the spreading direction on a horizontally installed workbench. , a feed-out roller that feeds out the cloth in a substantially vertical direction downward; and a feed-out roller that is arranged parallel to the workbench and perpendicular to the cloth-spreading direction and that reciprocates in the cloth-spreading direction across the feed-out position of the cloth. 1. A spreading machine, characterized in that a cutting iron capable of sorting is provided on the main body of the spreading machine.