JPH0747276B2 - Fixed length cutting machine for cloth - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed-length cloth cutting machine for cutting a long cloth such as curtain cloth into a predetermined length.

[0002]

2. Description of the Related Art Conventionally, when a long curtain material is cut into a predetermined length according to the length of the curtain, a mandrel is conventionally passed through a cloth roll in which the long curtain material is wound into a roll. Is supported on one end of a table that is long in one direction, the cloth roll is turned to pull out the curtain fabric, the curtain fabric that is pulled out is spread on the table, the length is measured with a tape measure, and the predetermined length is sandwiched. Had been cut into.

[0003]

However, since there are long curtains having a length of about 10 meters, a long cutting table is necessary, and therefore a wide table is required for installing the table. Needed a place. Further, since the curtain cloth is pulled out from the cloth roll and the cloth roll is rotated, there is a problem that the tension at the time of pulling out becomes large and the curtain cloth is elongated. In addition, the same problem also occurred during the patterning and cutting of the clothing material.

The present invention is a fixed length cutting machine for cutting a long cloth such as curtain cloth or clothing cloth into a predetermined length, which can greatly save the installation area and can also be a cloth roll. Provided is a constant-length cutting machine capable of keeping the tension applied to a fabric such as a curtain fabric or a clothing fabric drawn from the fabric extremely low and constant. Further, in addition to the above-mentioned performance, the present invention provides a fixed length cutting machine that can take out a large number of cloths cut into a predetermined length in a uniform manner.

[0005]

According to a first aspect of the present invention, there is provided a fixed length cutting machine for a cloth, wherein a cloth roll is brought into contact with a delivery roller and rotated, and a cloth drawn from the fabric roll is placed above the delivery roller in front of the delivery roller. The take-up roller located at this position pulls it through the length measuring roller, and when the running length of the cloth reaches a predetermined length, the cloth is cut by a running cutter running in the width direction below the take-up roller. In a fixed-length cloth cutting machine, a feeding motor is connected to the above-mentioned feeding roller, and a widthwise arm shaft that is driven to rotate substantially in the middle of the feeding roller and the length-measuring roller is fixed to this pair of left and right arms. The tip of the swing arm is located behind the arm shaft between a downward position where the tip of the swing arm is located above the rear side of the feed roller and an upward position where it is located above the rear side of the take-up roller. Is provided so as to swing up and down via a rearward-facing position and can be stopped at the downward position, the rearward-facing position, and the upward-facing position, respectively. When the swing roller is attached to the intermediate feed roller so that it can be moved in and out, and the swing arm is in the rearward position, the fabric pulled back from the fabric roll passes through between the intermediate feed roller and the pressure roller and becomes a take-up roller. It is characterized in that a predetermined amount of looseness of the fabric is formed between the feeding roller and the intermediate feeding roller and between the feeding roller and the intermediate feeding roller.

A fixed length cutting machine for fabric according to a second aspect of the present invention is the fixed length cutting machine according to the first aspect of the present invention, in which a fixed bar extending in the width direction is provided below the traveling cutter, and is movable forward and backward in front of the fixed bar. A take-up clamp including a bar is provided such that the front surface of the movable bar that is in contact with the fixed bar is located on the rear side of the cloth discharged from the take-up roller.

[0007]

In the downward position of the swing arm, when the intermediate feed roller and the press roller at the tip of the swing arm are opened above the delivery roller, the winding end of the cloth is pulled out from the cloth roll and the intermediate feed roller and the press roller are pressed. It is passed between the rollers, and then the pressing roller is brought into pressure contact with the intermediate feeding roller so that the winding end is sandwiched between the intermediate feeding roller and the pressing roller.

Then, the arm shaft is driven to swing the swing arm to the upward position, the intermediate feeding roller and the pressing roller at the tip end are positioned above the rear portion of the pulling roller, and then the pressing roller is separated from the intermediate feeding roller. The end of the fabric is released, the end of the fabric is guided to the length measuring roller and the pull-out roller in order, and the end of the fabric is aligned with the reference line, that is, the traveling line of the traveling cutter. Then, the arm axis is reversed and the swing arm is stopped at the rearward position,
The intermediate feed roller and the pressing roller at the tip are positioned behind the arm shaft, and the pressing roller is brought into pressure contact with the intermediate feeding roller.

Next, when the operation is started, the cloth pulled back from the feeding roller is pulled up to the front upper side through the intermediate feeding roller in the rearward position, the running length is measured by the length measuring roller, and the end portion of the cloth is measured. Descends from the front of the take-off roller. At this time, a predetermined amount of looseness of the fabric is formed between the feed roller and the intermediate feed roller, and between the intermediate feed roller and the take-up roller, so that the tension of the fabric is a low tension determined by the looseness of the fabric. Maintained at.

When the running length of the cloth reaches the set length, the rewinding is stopped, the running cutter runs in the width direction, the above cloth is cut at the position of the reference line, and the cut cloth having the predetermined length is cut. Falls down. Then, when the disconnection ends, the operation is restarted.

When a take-up clamp is provided below the traveling cutter, the operation is started with the movable bar of the take-up clamp opened, and the cloth is passed between the fixed bar and the movable bar. When the running length of the cloth reaches half of the predetermined length, the take-up clamp is closed by setting so that the front half of the cloth is clamped by the take-up clamp. Then, the subsequent portion of the cloth descends along the front surface of the movable bar of the take-up clamp, and when it reaches a predetermined length, the operation is stopped and the traveling cutter is operated, whereby the latter half of the separated cloth is cut off. The portion hangs from the front surface of the movable bar. That is, a cloth having a predetermined length is folded in two and hung on the movable bar. Hereinafter, by repeating this, a large number of cut fabrics are hung on the movable bar.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a delivery device 1 located below has four large-diameter delivery rollers 3 arranged in a circular arc between a pair of front and rear small-diameter support rollers 2 and a rear side (FIG. Is provided on the upper rear side of the support roller 2 (the left side of which is referred to as the front), and the five delivery rollers 3 are connected to a motor capable of forward / reverse rotation. . Then, the fabric F is formed in the recess formed by the support rollers 2 and the delivery roller 3 therebetween.
The fabric roll FR made of is placed, and the winding end end of the fabric F is pulled out rearward. Alternatively, the cloth roll FR may be supported by a shaft passing through the center thereof, and one or a plurality of delivery rollers 3 may be pressed against the cloth roll FR.

Above each of the two support rollers 2 and 2,
Support rods 4 and 4 parallel to this are supported, and circular side plates 6 and 6 are fixed to the front and rear support rods 4 and 4 via a pair of left and right side bars 5 and 5. The distance between the left and right side plates 6, 6 is adjusted by adjusting the fixing position of the side bar 5 with respect to the support rod 4 so that the cloth roll FR is
It is set according to the width of. Alternatively, the fabric roll FR may be supported by a shaft passing through the center thereof, and one or a plurality of the delivery rollers 3 may be pressed against the fabric roll FR.

A take-up roller 11 which rotates in forward and reverse directions by a motor drive is provided above the front side of the feeding device 1, and a length measuring roller 12 is provided above the take-up roller 11 so as to be vertically movable. A guide roller 13 is provided slightly behind.

An arm shaft 21 in the width direction is rotatably supported between the guide roller 13 and the feeding device 1, and a pair of left and right swing arms 22 and 22 bent in a dogleg shape on the arm shaft 21. Is fixed. The arm shaft 21 is rotated by a motor in an angle range of about 180 degrees to swing the swing arm 22 up and down, so that the swing arm 22 has a downward position 22a facing downward and an upward position 22b facing upward. The swing arm 22 reciprocates between the two via the rearward position of the solid line.

An intermediate feed roller 23, which rotates forward and backward by a motor, is attached to the tip side of the swing arm 22, and an air cylinder (not shown) drives the intermediate feed roller 23 at the tip side. Is moved in the length direction of the swing arm 22, and the intermediate feed roller 2 is moved.
A pressing roller 24 that comes into contact with and separates from the 3 is attached. The guide roller 2 is provided on the base side of the swing arm 22.
5 is attached.

A guide plate 3 is provided below the take-up roller 11.
1 and a disc-shaped traveling cutter 32 are provided in order, and a laser marker 33 is provided in front of the traveling cutter 32. When the cloth F hangs down on the front surface of the guide plate 31, the cloth A cutting line by the traveling cutter 32 is marked with a laser beam.

Below the traveling cutter 32, there is provided a cutting clamp including a fixed bar 34 having an L-shaped cross section that is long in the width direction and a movable bar 35 that moves forward and backward in front of the fixed bar 34. Below the cutting clamps 34, 35, there is provided a take-up clamp consisting of a fixed bar 37 fixed via a spring 36 and a movable bar 38 which moves forward and backward in front of the fixed bar 37. The movable bar 35 and the movable bar 38 of the take-up clamp are individually driven by an air cylinder (not shown). Incidentally, the above-mentioned take-up clamp 37,
38 is provided such that when the movable bar 38 is closed, its front surface is located behind the cloth F hanging from the take-up roller 11.

A first photoelectric detector 41 for detecting the presence or absence of the cloth F is provided below the guide roller 25 on the swing arm 22 when the swing arm 22 is in the rearward position. Further, the second photoelectric detector 42 and the third photoelectric detector 43 for detecting the presence or absence of the cloth F below the delivery roller 3 at the rearmost portion of the delivery device 1.
Are installed separately above and below.

In the above structure, the swing arm 22
Is in the downward position 22a shown by the chain double-dashed line in FIG.
The pressing roller 24 at the front end is opened to the position of 24a, and the end portion Fa of the cloth F drawn from the cloth roll FR on the lower sending roller 3 is passed through the gap between the pressing roller 24a and the intermediate feeding roller 23. Then, the pressing roller 24 is closed, and the end portion Fa of the cloth F is sandwiched between the pressing roller 24 and the intermediate feeding roller 23.

Then, the arm shaft 21 is driven, the swing arm 22 turns 180 degrees and moves to the upward position shown by the chain double-dashed line 22b, and the intermediate feed roller 23 and the pressing roller 24 at the tip end of the take-up roller 11 are moved. Stop above the rear. After that, the pressing roller 24 is opened to release the end portion of the cloth F, and the end portion of the cloth F is taken up by the take-up roller 1.
1 to the front of the take-up roller 11 between the length measuring roller 12a and the length measuring roller 12a, and the edge of the cloth F is aligned with the reference line drawn by the laser marker 33, and the length measuring roller 12a is lowered to the position of the solid line 12. Let Then, the arm shaft 2
1 is rotated 90 degrees, the swing arm 22 is stopped at the rearward position of the solid line, and the pressing roller 24 is moved to the intermediate feeding roller 2
Press into contact with 3.

Next, the take-up roller 11, the intermediate feed roller 23, and the feed-out roller 3 are respectively driven to start rotating at a predetermined speed, and the cloth F pulled out rearward from the feed-out roller 3 has the swing arm in the rearward position. Two
The intermediate feed roller 23, the guide roller 25, and the guide roller 13 located above the front side of the frame are taken up by the take-off roller 11, the running length is measured by the length-measuring roller 12, and the end portion of the cloth F is taken-off. It descends from the front surface of the roller 11 in order between the fixed bar 34 and the movable bar 35 forming the cutting clamp, and between the fixed bar 37 and the movable bar 38 forming the take-up clamp.

However, in this embodiment, the intermediate feed roller 23 is rotated at a higher speed than the take-up roller 11 or stopped, so that the slack of the cloth F between the take-up roller 11 and the intermediate feed roller 23 is caused. The amount is controlled within a predetermined range. That is, as shown in the figure, when the cloth F is greatly loosened and the curved portion Fb is located below the first photoelectric detector 41 below the guide roller 25, when the intermediate feed roller 23 stops rotating. As the cloth F runs, the above-mentioned slack is reduced. Due to this decrease, the curved portion F of the cloth F is reduced.
When b is higher than the first photoelectric detector 41, the intermediate feed roller 23 is rotated by a timer (not shown) for a certain period of time to increase the amount of slack of the cloth F, and the bending portion F is bent.
b is made lower than the first photoelectric detector 41.

On the other hand, the amount of looseness of the cloth F between the intermediate feeding roller 23 and the feeding roller 3 located at the rearmost portion of the feeding device 1 is controlled by rotating and stopping the feeding roller 3. That is, when the curved portion Fc due to the looseness of the fabric F rises above the upper second photoelectric detector 42, the feed roller 3 rotates at a higher speed than the intermediate feed roller 23. When the slack becomes large and the curved portion Fc descends below the third photoelectric detector 43 on the lower side, the rotation of the delivery roller 3 is stopped.

When the cloth F runs as described above and the running length reaches half of the set length, the take-up clamps 37, 38 located below the take-up roller 11 are closed to close the clamps 37, 38. The fabric F is sandwiched by 38 (see FIG. 2), and the fabric F continues to run, so that the slack Fd of the fabric F (see FIG. 3) is formed on the front surfaces of the above-mentioned take-up clamps 37, 38.

When the total running length of the cloth F reaches the set length, the take-up roller 11, the intermediate feeding roller 23 and the feeding roller 3 are stopped, and the cutting clamps 34 and 35 are as shown by the two-dot chain line in FIG. Closed to the clamp 3
The fabric F is sandwiched between 7, 38, and then the traveling cutter 3
2 travels in the width direction and cuts the cloth F at the position of the reference line, and the cloth F separated by this is hung on the movable bar 38.

Then, the above-mentioned cutting clamps 34, 35
After the take-up clamps 37 and 38 are opened, the operation is restarted, and the cloth F is placed on the movable bar 38 of the take-up clamp every time the running length of the cloth reaches the set length.
When the number of cloths F cut into a predetermined length reaches a predetermined number by repeating this, the movable bar 3
The fabric F on 8 is carried to the sewing process. On the other hand, the fabric F remaining between the take-up roller 11 and the delivery device 1 is wound around the fabric roll FR by the reverse rotation of the delivery roller 3, the intermediate feed roller 23, and the take-up roller 11. In this case, the swing arm 22 is moved to the upward position 22b so that the intermediate feeding roller 23 and the pressing roller 24 sandwich the end portion of the cloth F, and the swing arm 22 is swung to carry the end portion to the vicinity of the sending roller 3. be able to.

As described above, the invention according to claim 1 is
The cloth roll is placed on the lower feed roller, and the cloth pulled out from the cloth roll is guided to the upper front side via the intermediate feed roller on the upper swing arm, and is taken by the take-up roller. When cutting a long cloth such as a curtain cloth into a predetermined length, a long table unlike the conventional case is not required, and the installation area can be greatly saved. Further, the slack of the cloth is formed between the take-up roller and the intermediate feed roller and between the intermediate feed roller and the feed roller, and the slack amount is controlled within a predetermined range. The tension is small and constant, and therefore, when a plurality of cloths obtained by the above cutting are connected in the width direction to form a curtain having a wide width, uneven length and hanging are not caused. Further, in the invention according to claim 2, since the take-up clamp is provided below the traveling cutter, a plurality of cloths obtained by cutting with the traveling cutter are superposed on the movable bar of the take-up clamp. It is possible to hang it up and hold these fabrics evenly, and the subsequent handling is easy.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view for explaining the operation of the take-up clamp shown in FIG.

FIG. 3 is a vertical cross-sectional view for explaining the next operation of FIG.

[Explanation of symbols]

 1: Feeding device 3: Feeding roller 11: Take-up roller 12: Measuring roller 13: Guide roller 21: Arm shaft 22: Swing arm 23: Intermediate feeding roller 24: Pressing roller 25: Guide roller 32: Traveling cutter 34: Cutting Fixed bar of the clamp for use 35: Movable bar of the cutting clamp 37: Fixed bar of the take-up clamp 38: Movable bar of the take-up clamp 41: First photoelectric detector for detecting looseness of the fabric 42: Looseness of the fabric Second photoelectric detector 43 for detection 43: Third photoelectric detector for slack detection of cloth

Claims (2)

[Claims] 1. A fabric roll is brought into contact with a delivery roller to rotate, and a fabric pulled out from the fabric roll is taken up by a take-up roller located above the front side of the delivery roller via a length-measuring roller to obtain a fabric. When the running length reaches a predetermined length, the cloth is cut by a running cutter that runs in the width direction below the take-up roller. The widthwise arm shaft, which is connected to the feed roller and the length-measuring roller and rotated by driving, is attached to the downward position where the pair of left and right swing arm tips fixed to this arm shaft are located above the rear side of the feed roller. The upper end of the take-up roller is vertically swung between the upward position of the take-up roller and the upward position of the take-up roller via the rearward-facing position of the rear end of the arm shaft. The intermediate drive roller driven by a motor and a presser roller which can be brought into contact with and separated from the intermediate feed roller are mounted between the tips of the pair of left and right swing arms. When the swing arm is in the rearward position, the cloth pulled back from the cloth roll is drawn by the take-up roller through the space between the intermediate feed roller and the pressing roller, and between the feed roller and the intermediate feed roller, and between the intermediate feed roller and the intermediate feed roller. A fixed length cutting machine for a fabric, wherein a predetermined amount of slack of the fabric is formed between the feed roller and the take-up roller. 2. A take-up clamp comprising a fixed bar that is long in the width direction below the traveling cutter and a movable bar that can move forward and backward in front of the fixed bar, and a front surface of the movable bar that is in contact with the fixed bar has a take-up roller. The fixed-length cloth cutting machine according to claim 1, which is provided so as to be located on the rear side of the cloth discharged from the cloth.