JPS6411542B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention unwinds and unwraps a roll of fabric (fabric, hereinafter referred to as raw fabric), and stacks a plurality of fabrics. This article relates to an automatic spreading method for spreading the fabric, particularly a so-called inner facing type automatic spreading method in which the outer fabric and the inner fabric (lining) are stacked alternately and spread on a spreading table. be.

[Conventional technology]

In the conventional method of spreading cloth using the inner and front facing type, the raw fabric wound into a roll is unwound and unrolled, and the outer fabric and the inner fabric are alternately turned over and spread. First, the original fabric is unrolled, the first roll is made, and after cutting, the remaining unrolled original fabric is completely rewound, this original fabric is reversed and replaced, and then the next This operation is then repeated over and over again.

[Problem that the invention seeks to solve]

However, in the case of such conventional methods,
Because the raw material to be handled has a considerable weight, it is extremely troublesome and difficult to manually handle this heavy material. On the other hand, when the raw fabric is completely rewound, the raw fabric itself is often strongly charged with static electricity due to the friction caused by the handling of the rolled fabric, especially the cut edges that also serve as discharge edges.
Due to the electrostatic phenomenon, it may adhere tightly to the surface of the original fabric, making it difficult to tear it off.On the other hand, the cut edge may be mechanically found from the surface of the rolled fabric and the cut edge may be re-cut. Pulling out the end was extremely difficult and troublesome because of the adhesion phenomenon caused by the electrical charge mentioned above.

[Means for solving problems]

This invention was developed in view of the current situation of the conventional method.
The present invention provides an automatic spreading method for fabrics using a center face facing type, which makes it easy to handle the original fabric and automatically performs unwinding, spreading, and reversing operations.
A pair of unraveling rolls arranged parallel to each other at a predetermined distance and controlled to rotate in both forward and reverse directions are installed on a rotary table that is rotatably driven in a horizontal direction and is installed on a traveling cart,
By holding the rotary table with a releasable stopper device that prevents rotation of the rotary table, each of the unraveling rolls can be moved to either the front side or the rear side of the cloth spreading direction in a direction perpendicular to the cloth spreading direction. At the same time, the stopper device is released so that each unraveling roll can be replaced at each web spreading position by horizontal rotation of the rotary table, and A photoelectric detection means is provided below each of the unraveling rolls, and the cloth placed and held between the unraveling rolls is first detected from the spreading position on one side, and then in a certain direction. The fabric is fed out and spread with the fabric facing upward, and after the fabric has been spread, each of the unwinding rolls is reversed and the cut edge is wound back to the photoelectric detection position by the photoelectric detection means, so that the cut edge hangs down below the fabric. , and by controlling the stopper device to release and rotating the rotary table, each unraveling roll is reversed and replaced from the roll spreading position on one side to the rolling position on the other side. The stopper device is operated to hold the rotary table, and then from the other side of the paper spreading position, the paper is fed out in a fixed paper spreading direction with the other side facing upward, and in the same way, after finishing the paper spreading, The cut end is wound back by the unwinding rolls to the photoelectric detection position by the photoelectric detection means, the cut end is held hanging down below the fabric, and the stopper device is again controlled to release and the rotary table is turned. By rotating, each unraveling roll is reversed and returned from the spreading position on the other side to the spreading position on the one side, the rotary table is held by the stopper device, and the above operation is repeated to spread the web. This is how it was done.

〔Example〕

Hereinafter, an embodiment of the automatic spreading method using a fabric with facing sides in the fabric according to the present invention will be described in detail with reference to FIGS. 1 to 6.

Fig. 1 is a side explanatory view showing an overview of the equipment configuration of a spreading machine to which this embodiment method is applied, Figs. 5 is a perspective view of the same conveyor, FIG. 6 is an explanatory diagram of the driven roll of the above conveyor and a pneumatic circuit attached thereto, and FIG. 7 is an explanatory diagram of the operation of the configuration of the above apparatus.

First, the equipment configuration of a facing type spreading machine to which this embodiment method is applied will be described.

As shown in FIG. 1, the spreading machine to which this embodiment method is applied has a traveling cart 1 that can reciprocate along the longitudinal direction on a spreading table 2, and its traveling operation is as follows. This is done by the wheels 3 which are rotationally driven by the first motor 4 via the timing belt 5.

Therefore, a second
As shown in the figures or FIGS. 4A and 4B, a rotary table 7 is pivotally supported by a central main shaft 6, the center of the bottom surface of which is supported on a thrust bearing 6a, and is rotatable in a horizontal plane about this main shaft 6. be. In addition, a pair of unraveling rolls 8 and 9 whose outer peripheral surfaces are wrapped with felt are provided.
are mounted between both end support plates 10, 11 on the rotary table 7 so as to be parallel to each other at a predetermined distance by roll shafts 8a, 8a and 9a, 9a, respectively. And in the center of the bottom of the rotary table 7',
The main gear 12 is fixed with bolts 13, 13, and the drive gear 16 is fixed to the motor shaft 15a of the second motor 15 via the intermediate gear 14.
are engaged with each other, and the rotary table 7 is rotated in the horizontal direction by a second motor 15.

Further, the upper part of the traveling carriage 1 is covered with a cover 17, and an electromagnetic stopper device 18 is provided at one end of the cover 17. The electromagnetic stopper device 18 is configured to energize and retract the actuating rod 18a by controlling the energization of a solenoid (not shown) in response to a control signal from a control device (not shown).
By engaging either of the engagement holes 19, 19 formed at a predetermined angular position on the bottom surface of the rotary table 7, the rotary table 7 is turned over by 180 degrees, that is, in this case, the pair of solutions are rotated. When the anti-rolls 8 and 9 are reversely positioned in a direction orthogonal to the traveling direction of the traveling carriage 1 and further to the unrolling direction, and to the front side or the rear side of the traveling direction, the rotary table 7 is placed at the same position. It is designed to stop and hold.

Furthermore, driven gears 20 and 21 are respectively fixed on opposite end roll shafts 8a and 9a of each unraveling roll 8 and 9 on the rotary table 7 side. On the other hand, interlocking gears 22 and 23, which partially protrude downward from the bottom surface, are meshed with each other. In this case, the drive gear 24 is fixed,
The driving gear 24 is adapted to mesh with either of the interlocking gears 22 and 23 protruding downward at each alternate reversal stop position of the rotary table 7 mentioned above.

Here, the first electromagnetic clutch device 25 is
The driving force transmitted to the input shaft side is temporarily cut off by a control signal from the control device, and the cutoff timing is set when the rotating table 7 is rotated 180 degrees as described above. The timing is set immediately before the driving gear 24 on the traveling carriage 1 meshes with either the interlocking gear 22 or 23 on the rotary table 7, and this cutoff timing is detected by the eccentric cam 26 on the central main shaft 6. , and a limit switch 27 having an operating lever 27a in sliding contact with its cam surface.

As shown in FIG. 1, the pulley 28 on the input shaft side of the first electromagnetic clutch device 25 includes:
A timing belt 31 is stretched between a pulley 30 on the output shaft side of the second electromagnetic clutch device 29, and a third motor 33 is connected to the pulley 32 on the input shaft 29a of the second electromagnetic clutch device 29. A timing belt 35 is stretched between a pulley 34 fixed to a motor shaft 33a.

Further, this second electromagnetic clutch device 29 converts the rotational direction of the driving force transmitted to the input shaft 29a side into a forward rotation or a reverse rotation direction by a control signal from the control device, and operates the input shaft 29a. The interlocking gear 36, which is rotatably loosely fitted on the upper part, is connected and disconnected, and this interlocking gear 36 includes:
An interlocking gear 37 integrally provided with a pulley 38 is meshed with the interlocking gear 37, and a timing belt 41 is stretched between the pulley 38 and a pulley 40 fixed to the motor shaft 4a of the first motor 4. .

Next, the fabric C of the original fabric 73 is fed out from the roll 4
As shown in FIG. 5, the conveyor 42 for conveying the food to the No. 3 has a plurality of endless conveyor belts 46 stretched parallel to each other at a predetermined distance between a driving roll 44 and a driven roll 45. A drive gear 59 fixed to the drive shaft 58 of the conveyor drive roll 44 is connected to the motor shaft 60a of the fourth motor 60.
A hollow tube is used as the conveyor driven roll 45, and rollers are provided at equal angular intervals on the outer periphery of the tube between each belt 46. A large number of compressed air ejection holes 51 are opened, and both ends thereof are rotatably supported by fixed tube shafts 47 and 48 via airtight bearings 49, respectively, and the tubes of each fixed tube shaft 47 and 48 are The ends are closed together.

One fixed tube shaft 48 is connected to the driven shaft 45.
The pneumatic circuit that supplies compressed air through the pipe line 50 is made up of an air tank 52, a solenoid valve 53, an air bleed handle 54, a pressure gauge 55, a safety valve 56, an air compressor 57, etc.
By blowing out compressed air from 1, electrostatic adhesion of the fabric C to the conveyor belt 46 can be prevented, and these are all mounted on the traveling carriage 1, although not shown.

Furthermore, a guide plate 62 is provided at a lower front position of the traveling cart 1, as shown in FIG. 1, for guiding the dough C toward the spreading table 2. At a position close to the front edge of this guide plate 62,
An operating mechanism (not shown) allows the guide rod 6 to
A cutter portion 63 that can reciprocate in the width direction of the fabric C along the lines 4 and 65 is disposed.
The cloth C can be cut in the width direction by the rotating cutter 63a of No. 3.

Furthermore, each unraveling roll 8, 9 on the rotary table 7
Photoelectric detectors 66 and 67 are installed at positions corresponding to the lower part of the unwinding end of the outer fabric side, that is, the lower part of the unwinding edge of the outer material side, and the lower part of the unwinding end of the middle fabric side, respectively, and a photoelectric detector is installed below the guide plate 62. 68 respectively, one photoelectric detector 66,
67, as will be described later, when the cutter section 63 rewinds the original fabric after cutting each time the fabric C is spread, the rewound end, that is, the cut end, of the fabric C is connected to each unwinding end. The other photoelectric detector 68 detects the position where the cut edge of the fabric C is slightly hanging down at the bottom of the guide plate 62 every time the fabric C is spread. It detects whether or not it is being fed out, and outputs a detection signal for each to the control device.

Also, each support plate 10, 1 of the rotary table 7
As shown in FIGS. 2 and 4, a pair of guide rods 69 and 70 are mounted between the two guide rods 69 and 70, and a set of original support arms 71 and 72 are attached to each guide rod 69 and 70, respectively. The original fabric 7 is fitted so as to be movable and rotatable in the axial direction, and is placed at a predetermined position in the axial direction between each of the pair of unwrapping rolls 8 and 9.
3 is placed and held.

Although not shown, the control device controls the motors, electromagnetic stopper devices, limit switches, electromagnetic clutch devices, limit switches for regulating and setting travel distances (not shown), etc., which will be described later. It has a built-in control circuit that operates in sequence.

Next, the operation of the facing-type spreader to which the method of this embodiment is applied will be described.

Initially, at the time of starting, as shown in FIG. First, the end of the raw fabric 73, that is, the unwinding end, is moved downward through the unraveling roll 8 side, which is the front side in this case, and the photoelectric detector 6
Pull it out to position 6. In this case, by energizing the electromagnetic stopper device 18, the rotary table 7 and, by extension, each of the unraveling rolls 8 and 9 are restrained and held in that position, and the unraveling roll 8
is on the front side, the driven gear 2 of the unraveling roll 9
The interlock gear 23 that meshes with the first electromagnetic clutch device 25 will mesh with the drive gear 24 of the first electromagnetic clutch device 25 .

Incidentally, in this case, it is assumed that the raw fabric is fed out from the unraveling roll side, which is the front side, and the fabric is rolled out with the front side facing up, and the raw fabric is fed out from the unraveling roll side, which is the rear side. Assuming that the fabric is stretched with the lining side facing up, the former will be referred to as the outer side unfolded position or posture, and the latter will be referred to as the lining side unfolded position or posture.

When the control device (not shown) is turned on in the state of the outer material side unfolded position, the third and fourth motors 33 and 60 are first driven, and one of the motors 33 is driven. Therefore, the second
Rotating the release roll 9 in the direction of arrow a through the first electromagnetic clutch devices 29 and 25 sequentially,
Along with the driven rotation of the unraveling roll 8 in the direction of arrow c, the raw fabric 73 is rotated in the direction of arrow b, and the fabric C is fed out onto the conveyor 42 with the outer side facing up. Depending on the drive, the conveyor 42 is driven and the dough C fed out is moved to the guide plate 62 by the conveyor 42.
Transfer it in the direction of.

Then, the dough C reaches the lower end of the guide plate 62,
When the tip thereof is detected by the photoelectric detector 68, the detection force of the photoelectric detector 68 causes the third and fourth motors 33 and 60 to be stopped, and the first motor 4 to be stopped. Driven. By driving this motor 4, on the one hand, the traveling trolley 1 is made to travel in the direction of arrow A, and on the other hand, the rotational force of the first motor 4 is applied to the timing belt 41 and the interlocking gear 3.
7, 36, second electromagnetic clutch device 29, timing belt 31, first electromagnetic clutch device 25,
Through the drive gear 24, the interlocking gear 23, and the driven gear 21, the unraveling roll 9 is continued to be rotated in the direction of arrow a at a rotation speed synchronized with the traveling speed of the traveling trolley 1. In this way, fabric C
is spread on the spreading table 2 with the front side facing up.

When the traveling trolley 1 reaches a preset reference position, here a predetermined spread length position, the first motor 4 and, by extension, this traveling trolley 1 are stopped, and at the same time, the moving trolley 1 (not shown) is stopped. The cutter section 63 starts reciprocating movement by the operating mechanism, and the first cutting of the stretched fabric C in the width direction is performed by the rotating cutter 63a of the cutter section 63.

Further, when the first cutting by the cutter section 63 is completed, the third motor 33 is started again, the rotation direction of the second electromagnetic clutch device 29 is switched, and this time the unraveling roll 9 is a
The raw fabric 73 is also rotated in the direction opposite to the arrow c.
It is rotated in the opposite direction, and the portion that has been unrolled to the cut end begins to be rewound. Then, when the cut end is wound back to the position of the photoelectric detector 66 on that side,
The third motor 33 is immediately stopped by the cut end detection signal, and the cut end, which will be the next unrolled end, is detected by the photoelectric detector 66 below the unraveling roll 8. It returns to the state where it hangs down to the installation position, that is, the previous unfolded posture on the outer side.

That is, in this way, the first spreading is done with the outer fabric side facing up.

Subsequently, depending on the cut edge detection signal of the photoelectric detector 66 described above, after returning to the surface side unfolded position, the electromagnetic stopper device 18 is demagnetized and the rotary table 7
At the same time, the second motor 15 is activated, and the rotary table 7 is rotated in the horizontal direction while the original fabric 73 is placed and held between the unraveling rolls 8 and 9. Along with this rotation, the interlocking gear 23 of the disengaging roll 9 disengages from the drive gear 24, and before the rotation angle reaches 180 degrees, the limit switch 27 is turned on and the first electromagnetic clutch is turned on. The excitation coupling of device 25 is released, allowing its drive gear 24 to rotate freely.

In this state, when the rotary table 7 finishes rotating 180 degrees, the unraveling roll 9 is now on the front side, so that the interlocking gear 22 that meshes with the driven gear 20 of the unraveling roll 8 is connected to the first electromagnetic Clutch device 25
The drive gear 24 is easily engaged with the drive gear 24, which is in a completely rotatable state at this time, and at this point, the electromagnetic stopper device 18 is again energized to stop the same rotation. While the platform 7 is restrained and held in this 180 degree rotational position, the first electromagnetic clutch device 25 is also re-energized and the drive gear 24 is coupled.

In this way, the unfolded posture on the outer side shown in FIG. 1 is quickly and easily reversed and converted into the unfolded posture on the lining side shown in FIG. In this state of the lining side unraveling position, as described above, in addition to the restraining and holding of the rotary table 7 and the engagement of the interlocking gear 22 on the unwinding roll 8 side with the drive gear 24 of the first electromagnetic clutch device 25, , the end of the original fabric 73 between the pair of unwinding rolls 8 and 9, in other words, the unrolled end cut in the previous web spreading operation, passes through the unwinding roll 8 side, which is the rear side in this case. It is pulled out downward to the location where the photoelectric detector 66 is installed. In other words, during the reversal operation, the feed end (cut end) is not caught in the original fabric 73 surface,
Therefore, it is not affected by electrostatic phenomena, and it is possible to eliminate the fear that it would be difficult to draw out the extended end.

When the outer fabric side unraveling position is reached, the third and fourth motors 33 and 60 are driven in the same manner as described above following the completion of the previous fabric spreading operation. In this case, one of the third motors 33 is driven to rotate the unraveling roll 8 in the direction of arrow d, and along with the driven rotation of the unraveling roll 9 in the direction of arrow f, Original fabric 73
is rotated in the direction of arrow e, and this time the fabric C is fed out onto the conveyor 42 with the lining side facing up. From here on, the same operation as before is performed, and as a result, On the spreading table 2, the current fabric C with the lining side up is spread over the previous fabric C with the outer fabric side facing up.

Therefore, by repeating the above-mentioned operations, the desired spreading operation of the inner surface facing type can be carried out smoothly and effectively.

〔Effect of the invention〕

As described above, according to the method of the present invention, a pair of unraveling rolls arranged parallel to each other at a predetermined distance and controlled to rotate in both forward and reverse directions are mounted on a traveling cart and driven to rotate in the horizontal direction. By holding the rotary table with a releasable stopper device provided on the table and preventing rotation of the rotary table, each of the unraveling rolls can be moved in a direction perpendicular to the cloth-spreading direction, on the front side and the rear side of the cloth-spreading direction. At the same time, the stopper device is released so that each unraveling roll can be replaced at each web spreading position by rotating the rotary table in the horizontal direction, and A photoelectric detection means is provided below each of the unraveling rolls at the unfolding position, and the fabric placed and held between the unraveling rolls is first detected in a certain direction of unfolding from the unfolding position on one side. The fabric is fed out and spread with one of the front and back sides facing up, and after the spreading is completed, each of the unwinding rolls is reversed and the cut edge is wound back to the photoelectric detection position by the photoelectric detection means, so that the cut edge hangs downward from the fabric. Each unraveling roll is reversed from a web spreading position on one side to a web spreading position on the other side by holding it in a downward position and controlling the stopper device to rotate the rotary table. After the replacement, the stopper device is operated to hold the rotary table,
Next, from the spreading position on the other side, the paper is fed out and spread with the other side facing up in a certain spreading direction, and in the same manner, after the paper spreading is completed, the cut end is moved to the photoelectric detection position by the photoelectric detection means. Each unwinding roll is rewound to hold the cut end hanging down below the cloth, and the stopper device is again controlled to release and the rotary table is rotated to rotate each unwinding roll to the other side. The web is reversed and returned from the web spreading position to the one side web spreading position, the rotary table is held by the stopper device, and the above operations are repeated to spread the web, so the web spreading and reversing operations are automatic. This greatly speeds up the work of spreading the fabric from both sides, and when rewinding the fabric after cutting each time it is spread, the cut ends can be pulled out and held at the bottom of each unwinding side. As a result, unlike conventional methods, the feeding end will not be caught up in the fabric surface during reversal operation, and will therefore not be affected by electrostatic phenomena, and there is no need to worry about difficulty in drawing out the feeding end. It has excellent features such as being able to solve the problem and making the next feeding easier, and furthermore, the structure of the entire device for feeding out and reversing the cloth becomes relatively simple.

[Brief explanation of the drawing]

Fig. 1 is a side explanatory view showing an overview of the equipment configuration of a fabric spreading machine to which an embodiment of the fabric spreading method using the inside-face facing type of fabric according to the present invention is applied, and Figs. 2 to 4 are the same rotary table. FIG. 5 is a perspective view of the same conveyor, FIG. 6 is an explanatory diagram of the driven roll of the above conveyor and the pneumatic circuit attached thereto, and FIG. The figure is an explanatory diagram of the operation of the configuration of the same device. 1... Traveling trolley, 2... Spreading table, 6... Center spindle, 7
...Rotary table, 8, 9...Pair of unraveling rolls, 15...Second motor serving as the main part of the rotary table drive mechanism, 18
...Electromagnetic stopper device for restraining and holding the rotary table, 33
...Third motor which becomes the main part of the unraveling roll drive mechanism, 66, 67... Photoelectric detector for detecting the cut end of unwinding, 73... Fabric, original fabric.

Claims (1)

[Claims] 1. A method of spreading a fabric wound into a roll in a fixed spreading direction and spreading it in a shape with facing sides, which is controlled to rotate in both forward and reverse directions, and is arranged parallel to each other at a predetermined distance. A pair of dissolution rolls to be
By holding the rotary table with a releasable stopper device that is provided on a rotary table that is controlled to rotate in the horizontal direction and that prevents rotation of the rotary table, each of the unraveling rolls can be rotated in the direction of spread. At the same time, the stopper device is released and each unraveling roll is rotated in the horizontal direction of the rotating table. The fabric can be replaced at each fabric spreading position, and a photoelectric detection means is provided below each of the unraveling rolls at each of the fabric spreading positions, and the fabric placed and held between the unraveling rolls is first detected. From the spreading position on one side, let the paper roll out in a certain spreading direction with one side facing up, and after finishing spreading,
Each of the unwinding rolls is reversed, the cut edge is wound back to the photoelectric detection position by the photoelectric detection means, the cut edge is held hanging below the fabric, and the stopper device is controlled to release and rotated. By rotating the stand, each unraveling roll is reversed and replaced from the spreading position on one side to the spreading position on the other side, and then the stopper device is actuated to hold the rotating stand, and then Then, from the spreading position on the other side, the paper is fed out in a certain spreading direction with the other side facing upward, and after the spreading is finished, the cut end is moved to the photoelectric detection position by the photoelectric detection means. The unwinding roll is used to unwind the cloth, and the cut end is held hanging down below the cloth, and the stopper device is again controlled to release and the rotary table is rotated, so that each unwinding roll is rotated on the other side. 1. An automatic method for spreading a fabric, which comprises inverting the fabric from the spreading position to the one side spreading position, holding the turntable by the stopper device, and repeating the above operations to spread the fabric.