JP2018058681A - Raw fabric roll fabric-unrolling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raw fabric roll fabric-unrolling apparatus capable of eliminating looseness of a fabric even after the rotational direction of a raw fabric roll is switched for middle front spreading and outer front spreading.SOLUTION: A raw fabric roll fabric-unrolling apparatus 10 includes a drive supporting part 13 which drives to rotate a raw fabric roll 5R while supporting the roll with two lower supporting parts 11, 12 along the peripheral direction and delivers a fabric 5 unrolled from the raw fabric roll 5R for development. Switching means 16 and drive means 17 are provided for two supporting parts 11, 12 of the drive supporting part 13. The switching means 16 switches a driving direction of the raw fabric roll 5R between a rotational direction which makes delivery of the fabric 5 from the raw fabric roll 5R into middle front spreading as shown in a figure and a rotational direction which provides outer front spreading. The drive means 17 increases a speed for driving to rotate the raw fabric roll 5R so that the speed of the supporting part 11 which is on the downstream side in the peripheral direction of rotation for middle front spreading as shown in a figure is larger than that of the supporting part 12 which is on the upstream side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a roll unwinding apparatus for unwinding and spreading a dough from a roll of roll on which the dough is wound.

  2. Description of the Related Art Conventionally, fabrics for fabric sewing products such as clothes are supplied in a state of a wound raw roll. In many cases, an original roll is unwound by unwinding with a spreader to spread the cloth, and is cut into parts for sewing from the cloth by a cutting machine. The spreader is provided with a raw roll unwinding device for unwinding the fabric. During unwinding, the original roll is supported in a rotatable state.

  When the support roll is supported from the center axis side, the center axis needs to be attached and detached, and there is a problem that it is difficult to make the peripheral speed constant when the fabric is rewound. The rewound dough is once slackened to remove wrapping or the like (for example, see Patent Documents 1 to 3).

  In Patent Documents 1 and 3, the outer periphery of the original fabric roll is supported by two rollers installed at intervals, and the rollers are rotated to drive. In patent document 2, it rotationally drives, supporting the outer periphery of an original fabric roll with the two belts bridged in V shape seeing from the side.

Japanese Utility Model Publication No. 6-066531 JP-A-6-316358 JP-A-2015-212181

  In Patent Document 2, a release area is provided in the middle of the movement path of the fabric unwound from the roll, and the roll is intermittently driven while monitoring the amount of slack in the release area. . In Patent Document 3, the rotational speed of the raw roll and the feed speed in the path for feeding the fabric rewound from the raw fabric roller are controlled, and the fabric is slackened within an appropriate range so that the fabric to be fed out. It prevents wrinkles from occurring. Although the support of the original fabric roll and the rotational driving in Patent Documents 1 to 3 are performed at two places spaced apart in the circumferential direction, the fabric may be loosened at this distance. If the dough spills on the outer circumference of the raw roll, it cannot be sufficiently eliminated even if it is slacked, and the stability of unwinding and the accuracy of spreading are adversely affected.

  In Patent Document 1, it is possible to perform unwinding of the fabric from the raw fabric roll by switching between the inner surface extension where the inner side is the surface and the outer surface extension where the outer side is the surface. A configuration is disclosed. In such a configuration, the winding direction at the time of placing the original fabric roll is different between the middle surface extension and the outer surface extension, so the direction of rotation after placement is also switched. However, if the rotation direction of the raw roll is switched, the direction in which the fabric is fed is also switched, and it is considered that it is more difficult to eliminate the looseness of the fabric in both directions.

  An object of the present invention is to provide a raw roll unwinding device that can eliminate the unevenness of the fabric even if the rotation direction of the raw roll is switched between the middle roll and the outer roll. is there.

The present invention includes a drive support unit that drives a raw roll to rotate while supporting it at two lower locations along the circumferential direction, and unwinds and unfolds the fabric that has been unwound from the raw roll. In the raw roll unwinding device, for the two support parts of the drive support part,
Switching means for switching the driving direction of the original fabric roll between a rotation direction in which the feeding of the fabric from the original fabric roll is in the middle direction and a rotation direction in which the outer direction is the opposite direction;
Driving means for driving the substrate roll so as to rotate while supporting the roll, so that the support portion on the downstream side in the circumferential direction of the rotation of the original roll is larger than the support portion on the upstream side; ,
It is the original fabric roll unwinding device characterized by including.

In the present invention, the two support portions are formed by a rotation mechanism,
The driving means drives the downstream rotation mechanism so that a peripheral speed of rotation is larger than that of the upstream rotation mechanism.
It is characterized by that.

In the present invention, the driving means includes
A single motor that drives one rotation mechanism as a drive source and whose rotation direction is switched by the switching means;
A speed increasing mechanism for transmitting the rotation by increasing the speed from one rotating mechanism receiving the drive of the motor to the other rotating mechanism;
A speed reducing mechanism that transmits the rotation by decelerating from the one rotating mechanism to the other rotating mechanism;
A first clutch and a second clutch respectively provided between the rotation mechanism and the speed increasing mechanism and the speed reducing mechanism;
It is characterized by including.

Also, in the present invention, the first clutch is a one-way clutch that is provided between the one rotation mechanism and the speed increasing mechanism and transmits rotation only in one rotation direction,
The second clutch is an electromagnetic clutch that switches whether to transmit rotation.
It is characterized by that.

Moreover, the present invention provides a guide roller for guiding the dough from the original fabric roll so as to be adjacent to the original fabric roll on one side,
The guide roller is rotationally driven in one direction independently of the drive support portion.
It is characterized by that.

  According to the present invention, the rotation direction of the original roll can be switched by the switching means regardless of whether the dough is fed out from the original roll in the middle or outer direction. The drive means drives the support unit to rotate while supporting the original roll so that the support unit on the downstream side in the circumferential direction of rotation is larger than the support unit on the upstream side. Therefore, the stagnation of the cloth between the support portions on the downstream side and the upstream side can be prevented, and the looseness can be eliminated.

  Further, according to the present invention, the two support portions are formed by the rotation mechanism, and the downstream rotation mechanism is driven so that the peripheral speed of rotation is larger than that of the upstream rotation mechanism. Even if the rotation direction of the raw roll is changed depending on the outer surface extension, the looseness of the fabric can be eliminated.

  According to the invention, the driving means drives the rotation mechanism of one support portion with a motor, and the other rotation mechanism is driven by switching with a clutch so that either the speed increasing mechanism or the speed reducing mechanism is interposed. Can do. A single motor can be used as a drive source for the two support portions, and the configuration can be made compact.

  In addition, according to the present invention, since the one-way clutch and the electromagnetic clutch are used as the clutch, the switching control that is difficult with only the one-way clutch is simplified by the combined use of the electromagnetic clutch, and the cost is lower than when only the electromagnetic clutch is used. can do.

  Moreover, according to this invention, the guide roller which guides so that material | dough may be drawn | feeded out from an original fabric roll may be provided in the position adjacent to the original fabric roller on one side, and it is rotationally driven in one direction independently of a drive support part. Even if the driving support portion switches the driving direction so as to rotate the original roll depending on the inner and outer outer rolls, the fabric can be similarly fed out from the original roll without being affected.

FIG. 1 is a simplified left side view showing a schematic configuration of a sheet spreader 1 including an original roll unwinding device 10 as an embodiment of the present invention. FIG. 2 is a plan view of the raw roll unwinding device 10 of FIG. FIG. 3 is a right side view of the raw roll unwinding device 10 of FIG. 4 is a left side view of the raw roll unwinding device 10 of FIG. FIG. 5 is a simplified left side view showing a state in which the middle roll extension and the outer roll extension are switched in the original roll unwinding apparatus 10 of FIG.

  Hereinafter, with reference to FIG. 1 to FIG. 5, the configuration and operation of an original roll unwinding device 10 included in the spreader 1 as an embodiment of the present invention will be described. For convenience of explanation, portions that are not described in the drawings to be described may be referred to with reference numerals described in other drawings.

  FIG. 1 shows a schematic configuration of a spreader 1 including an original roll unwinding device 10 as an embodiment of the present invention. The spreader machine 1 includes a spreader table 2 and a traveling carriage 3 that reciprocates in the front-rear direction on a pair of left and right traveling rails laid along both side edges of the upper surface of the spreader table 2. The traveling carriage 3 includes a wheel 4 having a drive source, and can feed the fabric 5 from the front end side to the upper surface of the extending table 2.

  The dough 5 is mounted on the traveling carriage 3 as a rolled-up original fabric roll 5 </ b> R. When the dough 5 unwound from the original fabric roll 5 </ b> R is fed onto the roll-up table 2, it is cut by the cutter 6. . A cloth guide plate 7, a feeding belt 8, and a release area 9 are provided in a path between the cutter 6 and the raw fabric roll 5R. The cutter 6 can cut the dough 5 in a direction perpendicular to the paper surface. The cloth guide plate 7 guides the cloth 5 to the cutter 6. The cutter 6 and the cloth guide plate 7 can move up and down in accordance with the number of the cloths 5 because the cloths 5 are stacked on the upper surface of the spread table 2. The fabric 5 fed by the feeding belt 8 is fed into the fabric guide plate 7. The feeding belt 8 draws in the dough 5 that has been slackened in the release region 9 and from which wrapping has been removed.

  The raw roll unwinding device 10 includes a drive support portion 13 that drives the raw roll 5R so as to rotate while being supported by two lower support portions 11 and 12 along the circumferential direction. The unrolled fabric 5 is unwound and unfolded on one side, which is the direction of unwinding to the unfolding table 2, on the left side in the figure. The dough 5 rewound from the original fabric roll 5R is sandwiched between the guide roller 14 and the opening / closing roller 15 and is fed into the release region 9 by the guide by the guide roller 14. The guide roller 14 is provided in the middle of the path for feeding the dough 5 from the original roll 5R in one direction, that is, at a position adjacent to the original roll R5 on one side. A switching means 16 and a driving means 17 are provided for the two support portions 11 and 12 of the drive support portion 13. The switching means 16 is realized by electrical control, and the direction in which the raw roll 5R is driven to rotate is the rotational direction in which the feeding of the dough 5 from the raw roll 5R becomes the middle surface extension as shown in the figure. And the direction of rotation in which the outer surface extends. The driving means 17 drives the original roll 5R to rotate at a speed at which the support portion 11 is located downstream of the support portion 11 in the circumferential direction of rotation in the case of middle surface extension as shown in the figure. Drive to become larger.

  2, 3 and 4 show the configuration of the raw roll unwinding device 10 of this embodiment. As shown in FIG. 2, the main part of the raw roll unwinding device 10 is supported by frames 20 provided on the left and right sides of the traveling carriage 3. A support arm 21 is attached from the front end of the frame 20 so as to protrude forward, and a base end of the opening / closing arm 22 is attached to the vicinity of the front end of the support arm 21 in a swingable state. Near the tip of the opening / closing arm 22, the opening / closing roller 15 is supported in a rotatable state. A guide roller 14 is supported near the front end of the frame 20. When the opening / closing roller 15 is lowered by the swinging of the opening / closing arm 22, the opening / closing roller 15 is closed in a state where the outer periphery of the guide roller 14 and the outer periphery of the opening / closing roller 15 are in contact with each other. The guide roller 14 and the opening / closing roller 15 pass the dough 5 through an open interval, and in the closed state, the dough 5 is unwound from the original roll 5R and pulled out. A pulley 24 is attached to the output shaft of the motor 23 attached to the frame 20, and a pulley 25 is attached to the central shaft of the guide roller 14. A timing belt 26 is bridged between the pulleys 24 and 25. The guide roller 14 is driven to rotate in one direction independently of the drive support portion 13 in order to guide the dough 5 to be fed out from the raw roll 5R. In order to smoothly feed out the dough 5, it is preferable that the guide roller 14 has a higher peripheral speed than the unwinding rollers 11r and 12r.

  The two support portions 11 and 12 of the drive support portion 13 that supports the original roll 5R are formed by unrolling rollers 11r and 12r that are rotation mechanisms. Instead of the unrolling rollers 11r and 12r, a V-shaped belt as disclosed in Patent Document 2 can be used. However, for the lower shaft that supports one belt and the other belt in common, each belt is free to circulate and each belt needs to be driven independently by the upper shaft. There is. If the unrolling rollers 11r and 12r of the rotation mechanism are formed to have the same diameter, the support and drive for the original roll 5R are equivalent even if the rotation direction is switched between the middle surface extension and the outer surface extension. And can be rotated at a peripheral speed corresponding to the rotational speed. Even when switching between the middle surface extension and the outer surface extension is performed, the circumferential speed of the unwinding rollers 11r, 12r on the downstream side in the circumferential direction of rotation is larger than the upstream unwinding rollers 12r, 11r. Since it is driven, the looseness of the fabric 5 can be eliminated. The drive support unit 13 may be driven by intermittently displacing the raw roll by intermittent feeding with a claw or the like.

  The driving means 17 includes a motor 30, a one-way clutch 31, an electromagnetic clutch 32, a speed increasing mechanism 33 and a speed reducing mechanism 34. The motor 30 shown in FIG. 4 serves as a single drive source to drive one unwinding roller 11 r and the rotation direction is switched by the switching means 16. The one-way clutch 31 has a mechanical configuration in which the rotation of the shaft is transmitted so as to rotate in only one direction, and the other rotation is transmitted without transmitting. The electromagnetic clutch 32 transmits rotation through an electromagnetic force by energization, and does not transmit rotation unless energized. The speed increasing mechanism 33 increases the speed from one unwinding roller 11r on the driving side to the other unwinding roller 12r on the driven side and transmits the rotation. The speed reduction mechanism 34 decelerates from one unwinding roller 11r to the other unwinding roller 12r and transmits the rotation.

  As shown in FIG. 4, a sprocket 35 is attached to the output shaft of the motor 30. A sprocket 36 is attached to the shaft of one unwinding roller 11r. A chain 37 is spanned between the sprockets 35 and 36 to transmit the rotation. As shown in FIGS. 4 and 2, the speed increasing mechanism 33 provided between the shaft of one unwinding roller 11r and the shaft of the other unwinding roller 12r is attached to the shafts of the unwinding rollers 11r and 12r, respectively. Sprockets 33a and 33b and a chain 33c bridged between the sprockets 33a and 33b. The sprocket 33a has more teeth than the sprocket 33b, and the rotation between the sprockets 33a and 33b is increased. As shown in FIGS. 2 and 3, a speed reduction mechanism 34 is also provided between the shafts of the unwinding rollers 11r and 12r. The speed reduction mechanism 34 includes sprockets 34a and 34b attached to the shafts of the unrolling rollers 11r and 12r, respectively, and a chain 34c bridged between the sprockets 34a and 34b. The sprocket 34a has fewer teeth than the sprocket 34b, and the rotation between the sprockets 34a and 34b is decelerated.

  As shown in FIG. 2, the one-way clutch 31 is housed between the sprocket 33a of the speed increasing mechanism 33 and the shaft of the unwinding roller 11r. The one-way clutch 31 is used as a first clutch for transmitting the rotation by increasing the speed from one unwinding roller 11r to the other unwinding roller 12r via the speed increasing mechanism 33. An electromagnetic clutch 32 as a second clutch is inserted between the shaft of the other unwinding roller 12r and the sprocket 34b of the speed reduction mechanism 34. The electromagnetic clutch 32 does not act and prevents the rotation from being transmitted to the unwinding roller 12r through the speed reduction mechanism 34 from the unwinding roller 11r. In the middle surface extension, the direction of rotation of the unwinding rollers 11r, 12r is reversed from that of the outer surface extension, and the one-way clutch 31 does not act, so that the rotation is transmitted to the unwinding roller 12r via the speed increasing mechanism 33. Absent. The electromagnetic clutch 32 is actuated to transmit the rotation by decelerating from the unwinding roller 11r to the unwinding roller 12r via the speed reduction mechanism 34. As described above, the driving unit 17 rotates the unrolling rollers 11r and 12r on the downstream side at higher speed than the unwinding rollers 12r and 11r on the upstream side respectively in the middle surface extension and the outer surface extension.

  In the driving means 17 of the present embodiment, the unwinding roller 11r of one support portion 11 is driven by the motor 30, and the other unwinding roller 12r is connected to either the speed increasing mechanism 33 or the speed reducing mechanism 34 with the clutch 31, 32 can be switched and driven. If each unwinding roller 11r, 12r is provided with a drive source, the one-way clutch 31, the electromagnetic clutch 32, the speed increasing mechanism 33, and the speed reducing mechanism 34 may not be provided. However, the configuration can be made more compact by using the driving means 17 including the single motor 30 as the driving source for the two support portions 11 and 12 as in the present embodiment.

  In this embodiment, the one-way clutch 31 and the electromagnetic clutch 32 are used as the clutch. Two electromagnetic clutches 32 may be used without using the one-way clutch 31. If only the one-way clutch 31 is provided on both, mechanical interference occurs and rotation transmission stops. Since the one-way clutch 31 needs to be used on the driving side of the speed increasing mechanism 33, when the other unwinding roller 12 r is driven by the motor 30, the one-way clutch 31 is interposed between the shaft of the unwinding roller 12 r and the speed increasing mechanism 33. It is provided in the same manner as in the example. Since the electromagnetic clutch 32 can be used on either the driving side or the driven side, for example, two electromagnetic clutches 32 can be used on the driving side. Although the one-way clutch 31 is more limited in arrangement than the electromagnetic clutch 32, it can be used between the shaft of the unrolling roller 11 r housed in the sprocket 33 a of the speed increasing mechanism 33 and driven by the motor 30. Further, space saving and cost reduction can be achieved as compared with the case where only the electromagnetic clutch 32 is used.

  Further, the speed increasing mechanism 33 and the speed reducing mechanism 34 use not only the combination of the sprockets 33a, 33b; 34a, 34b and the chains 33c, 34c but also a transmission means such as a combination of a timing belt and a pulley or a combination of gears. May be.

  FIG. 5 shows a state in which the middle roll extension and the outer roll extension are switched in the original roll unwinding apparatus 10 of FIG. In the middle surface extension shown in FIG. 5 (a), while the outer roll 5R supports the outer periphery with the unwinding rollers 11r and 12r so as to rotate in the clockwise direction, the one side of the unwinding is the downstream side. The anti-roller 11r is driven so as to be larger than the other-side unwinding roller 12r. In the outer surface extension shown in FIG. 5B, while the outer roll 5R supports the outer periphery with the unwinding rollers 11r and 12r so as to rotate in the counterclockwise direction, the other side of the unrolling solution whose rotational speed is on the downstream side. The anti-roller 12r is driven so as to be larger than the one-side unwinding roller 11r. Regardless of whether the feeding of the dough according to the winding direction of the original roll 5R placed on the unwinding rollers 11r, 12r is the middle roll or the outer roll, the switching means 16 rotates the original roll 5R. Can be switched to match the spread. Since the drive means 17 drives the unrolling rollers 11r and 12r so that the peripheral speed of the support part on the downstream side in the circumferential direction of rotation is greater than the peripheral speed of the support part on the upstream side, And the stagnation of the cloth 5 between the support portions 11 and 12 on the upstream side can be prevented, and the looseness can be eliminated.

  In addition, regarding the switching between the inner surface extension and the outer surface extension, in Patent Document 1, a configuration in which the path of the fabric in the outer surface extension passes below the original fabric roll and the path of the fabric in the middle extension Have In the present embodiment, such a configuration is not necessary, and the fabric 5 can be drawn directly from the original roll 5R to the guide roller 14 by the middle and outer outer rolls, and the original roll 5R is placed. Thus, it is possible to simplify the work required when switching. Although the rotation direction of the motor 30 of the driving means 17 is switched by the switching means 16 depending on the inner surface extension and the outer surface extension, the guide roller 14 that is rotationally driven by the motor 23 as an independent drive source is unidirectional. The fabric 5 can be guided to the release area 9 stably by rotation.

  In this embodiment, the original roll unwinding device 10 is mounted on the traveling carriage 3 of the spreader 1, but can also be installed on the carry-in side of the cutting machine that cuts the stretched fabric 5. If the cutting table of the cutting machine has a transport function, the unwound fabric 5 can be fed onto the cutting table, transported, and spread.

DESCRIPTION OF SYMBOLS 1 Roller 5 Material | dough 5R Original fabric roll 10 Original fabric roll unwinding device 11,12 Support part 11r One unrolling roller 12r The other unwinding roller 13 Driving support part 14 Guide roller 15 Opening / closing roller 16 Switching means 17 Driving means 20 Frame 21 Support arm 22 Open / close arm 23, 30 Motor 31 One-way clutch 32 Electromagnetic clutch 33 Speed increasing mechanism 34 Speed reducing mechanism

Claims (5)

An unrolled roll solution that is provided with a drive support portion that drives the unrolled roll to rotate while being supported at two locations along the circumferential direction, and unfolds the dough unwound from the unrolled roll to one side. In the opposite device, for the two support parts of the drive support part,
Switching means for switching the driving direction of the original fabric roll between a rotation direction in which the feeding of the fabric from the original fabric roll is in the middle direction and a rotation direction in which the outer direction is the opposite direction;
Driving means for driving the substrate roll so as to rotate while supporting the roll, so that the support portion on the downstream side in the circumferential direction of the rotation of the original roll is larger than the support portion on the upstream side; ,
A raw roll unwinding device characterized by comprising: The two support portions are formed by a rotation mechanism,
The driving means drives the downstream rotation mechanism so that a peripheral speed of rotation is larger than that of the upstream rotation mechanism.
The raw fabric roll unwinding apparatus according to claim 1. The driving means includes
A single motor that drives one rotation mechanism as a drive source and whose rotation direction is switched by the switching means;
A speed increasing mechanism for transmitting the rotation by increasing the speed from one rotating mechanism receiving the drive of the motor to the other rotating mechanism;
A speed reducing mechanism that transmits the rotation by decelerating from the one rotating mechanism to the other rotating mechanism;
A first clutch and a second clutch respectively provided between the rotation mechanism and the speed increasing mechanism and the speed reducing mechanism;
The raw roll unwinding device according to claim 2, wherein The first clutch is a one-way clutch that is provided between the one rotation mechanism and the speed increasing mechanism and transmits rotation only in one rotation direction.
The second clutch is an electromagnetic clutch that switches whether to transmit rotation.
The material roll unwinding device according to claim 3 characterized by things. A guide roller that guides the dough from the original fabric roll is provided at a position adjacent to the original fabric roll on one side,
The guide roller is rotationally driven in one direction independently of the drive support portion.
The raw roll unwinding device according to any one of claims 1 to 4.

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