JPS6363459B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a fabric spreading machine for unwinding and unrolling a rolled fabric (fabric, hereinafter referred to as original fabric), and for spreading the fabric into a stack of multiple sheets. In particular, the present invention relates to a so-called inner-face facing type fabric spreading machine that alternately stacks outer fabrics and inner fabrics (lining fabrics) and spreads them on a spreading table.

A conventional spreading machine of this kind is mounted on a traveling carriage and has a pair of arms at both ends in order to alternately invert the outer material and the inner material of the cloth and spread it on the spreading table. A rotating device is installed, and the unwinding roll is driven to unwind, spread, and cut the original fabric, and then
After unwinding the excess raw fabric and completely rewinding it, the rotation device is operated to raise this raw fabric onto the unwinding roll, and it is repositioned by reversing it 180 degrees. There is a configuration in which the sheet is rolled onto the unraveling roll again to perform the next sheet spreading operation.

However, in the case of such a conventional configuration,
Since the raw material being handled itself has a considerable weight, the configuration of the device for raising, lowering, and reversing this heavy material is inevitably complicated by the addition of unstable mechanical elements. , and requires a considerable degree of weight-bearing strength and operating capacity, which has the disadvantage of increasing the cost of the entire device.
For this purpose, a configuration has been proposed in which only the reversing operation of the original roll is manually performed, but it is extremely inconvenient and has poor work efficiency to manually reverse the original roll every time the web is spread. , is inefficient.

Furthermore, in general, in order to make the end part of the original fabric cut after the initial unrolling and stretching process, the cut edge, that is, the unrolled part of the excess original fabric, is first A method is used in which the raw fabric is completely rolled back to the side and then turned over 180 degrees, but if the cut edge is completely rolled back in this way, the raw fabric itself will be affected by this stretch. Due to the friction caused by handling, etc., a strong static charge may be generated, and the cut edge, which also serves as the discharge edge, may stick tightly to the surface of the fabric due to the electrostatic phenomenon. On the other hand, it is extremely difficult to mechanically find this cut edge from the surface of the roll-shaped material and pull it out again because the adhesion phenomenon caused by the electric charge is also added. It was difficult and troublesome.

In view of the above-mentioned conventional circumstances, this invention supports a pair of unraveling rolls arranged in parallel on a rotating table of a traveling truck, and supports the lower part of the unwinding end of each unwinding roll, that is, the outer side of the unwinding roll. A photoelectric detector is installed at the bottom of the unwinding end and at the bottom of the unwinding end on the mid-fabric side to detect the cut end, and the original fabric is placed between a pair of unraveling rolls and rotated. It is designed to be able to rotate together with the table to facilitate the reversing operation, and when rewinding after cutting each time the fabric is spread, the cut edges are detected by each photoelectric detector, and each cut edge is It is kept pulled out below the feeding side to facilitate the next feeding, thereby simplifying the device configuration and also enabling smooth unwinding operation.

Hereinafter, one embodiment of the facing-type spreading machine according to the present invention will be described in detail with reference to FIGS. 1 to 6.

FIG. 1 is an explanatory side view showing the outline of the device configuration according to this embodiment, FIGS. 2 to 4 are a plan view, front view, and enlarged side view of the main parts showing details of the rotary table, and FIG. FIG. 6 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 device configuration of the center facing facing type spreading machine to which this embodiment is applied will be described.

As shown in FIG. 1, the spreading machine to which this embodiment 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 one 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 The unraveling rolls 8 and 9 are perpendicular to the traveling direction of the traveling trolley 1 and the unraveling direction, and are on the front side or the rear side of the traveling direction,
When each is reversed and positioned, the rotary table 7 is stopped and held at the same position.

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 that transfers the speed to the third speed is 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. The 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 54, 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 fabric 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 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 center facing facing type spreading machine according to the apparatus configuration of this embodiment 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 spread with the lining side facing up, the former will be referred to as the outer fabric 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. In the end, 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 said second and first
The unraveling roll 9 is continued to be rotated in the direction of the arrow b at a rotational speed synchronized with the traveling speed of the traveling truck 1 through the electromagnetic clutch devices 29 and 25, respectively. Place the fabric C on the spreading table 2 with the outer side facing up.
It spreads upward.

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 electromagnetic stopper device 18 is energized again at this point, and at this point, the electromagnetic stopper device 18 is again energized to prevent 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 unrolled end (cut end) is not caught in the surface of the original fabric 73,
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 dough C is fed out onto the conveyor 42 with the lining side facing up.Then, the same operation as before is performed, and as a result, On the spreading table 2, the previous fabric C with the outer side facing up is layered, and the current fabric C with the lining side facing up is spread.

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

In the above embodiments, the spreading operation of the center facing type was described, but this device configuration can also be used for other types of unidirectional spreading and folded spreading, which do not perform reversing operations.

As described in detail above, according to the present invention, the pair of unraveling rolls for placing and holding the cloth are pivotally supported on the rotating table perpendicular to the traveling direction, and the rotating table is rotated on the traveling carriage. In supporting it freely,
Each unraveling roll is placed at a front position in the running direction, in this case a position where the cloth is unraveled with the outer side facing up, and a rear position, here a position where the cloth is unraveled with the lining facing up. Since it is held inverted in the horizontal direction, the reversing operation for each spreading operation is smooth and quick, and is extremely easy when spreading the fabric, especially when spreading with the inner side facing type. This has the advantage that the entire fabric spreading operation can be automated and is effective, and the rotation of each unraveling roll can be performed by feeding the fabric to a predetermined position on the spreading table. Then, after the paper spreading is completed, the cut end is controlled to be rewound, and photoelectric detectors are placed below the unwinding and rewound sides of each of these unwinding rolls to detect the cut end to be rewound and drive the rewound. Since the cutting edge is stopped, when the fabric is rewound after cutting each time the fabric is spread, each photoelectric detector detects the cut edge, and the cut edge can be pulled out and held at the bottom of each unwinding side. As a result, unlike conventional methods, the feeding end does not get caught in the fabric surface during reversal operation.
Therefore, there is no need to be affected by electrostatic phenomena, and the fear of having trouble pulling out the unrolled end is eliminated, making the next unrolling easier, and furthermore, the unwinding and reversing operations of this cloth can be improved. It has excellent features such as the relatively simple configuration of the entire device.

[Brief explanation of drawings]

FIG. 1 is an explanatory side view showing an outline of the device configuration according to an embodiment of the spreading machine according to the present invention, and FIGS. 2 to 4 are a plan view, a front view, and a main part showing the details of the same rotary table. An enlarged side view, FIG. 5 is a perspective view of the conveyor, FIG. 6 is an explanatory diagram of a driven roll of the conveyor and a pneumatic circuit attached thereto, and FIG. 7 is an explanatory diagram of the operation of the apparatus configuration. DESCRIPTION OF SYMBOLS 1... Traveling trolley, 2... Spreading table, 6... Center main shaft, 7... Rotating table, 8, 9... Pair of unraveling rolls, 15... Second part which is the main part of the rotating table driving mechanism
motor, 18... an electromagnetic stopper device that restrains and holds the rotary table, 33... a third motor that becomes the main part of the unraveling roll drive mechanism, 66, 67... a photoelectric detector that detects the unrolled cut end, 73 ...Tannmono, raw fabric.

Claims (1)

[Claims] 1. A fabric spreading machine that spreads a fabric wound into a roll onto a spreading table mainly with the middle surface facing the surface,
A traveling cart that reciprocates on the cloth spreading table, a pair of unwinding rolls arranged parallel to each other at a predetermined distance for placing and holding the cloth, and a rotatable pivot for each of these unwinding rolls. At the same time, each unraveling roll is rotated on the traveling carriage so that it can be reversed and held in a direction perpendicular to the traveling direction of the traveling carriage and to the front side or the rear side of the traveling direction. A freely supported rotary table and at least one of the above-mentioned unraveling rolls are rotated, and the outer fabric side or the lining side of the same fabric is turned up via the unraveling roll located on the front side or the rear side. a reeling roll drive mechanism that is driven and controlled to feed the sheet to a predetermined position on the sheet spreading table to spread the cloth, and to rewind the cut end after the sheet spreading is completed; Each photoelectric detection means is arranged below the unwinding and rewinding side of the roll and detects the cut end to be rewound and stops the rewinding drive. A spreading machine characterized by comprising a rotary table drive mechanism for reversing the position of the paper.