JPH0733193B2 - Slitter winding arm - Google Patents

Description

TECHNICAL FIELD The present invention relates to a winding arm of a slitter for sheet material,
Particularly, it relates to a winding arm of a slitter having a winding core chuck that supports the winding core from both sides.

[Prior Art] In a slitter for cutting a sheet-like material (for example, a plastic film, a plastic sheet, paper, etc.) from a wide raw material into a plurality of strip-shaped narrow width sheet-like materials and winding the slitter,
The cut strip-shaped sheets are wound on the corresponding winding cores. The take-up core is usually capable of transmitting rotational drive force and has a detaching function for rotational driving and for removing the take-up core in which an empty take-up core is attached and a sheet-like object is taken up for a predetermined length. It is held by the winding core chuck. Since the outer peripheral surface side of the winding core is a portion where the sheet-like material is wound, the winding core chuck is wound in order to avoid interference with the winding sheet-shaped material and not to damage the outer peripheral surface side of the winding core. It is desirable to have a structure that holds the take-up core from the inner peripheral surface side.

As a winding core chuck satisfying such a structure, conventionally, as shown in FIGS. 7 and 8, an arc-shaped piece 2 which is divided into an appropriate number in a circumferential direction on a winding core chuck 1 is used.
Is provided, the arc-shaped piece 2 is moved in the radial direction of the winding core chuck 1, and the winding core 3 is attached to the outer peripheral surface of the arc-shaped piece 2.
There is known a structure for pressing and holding the inner peripheral surface side of the. As a mechanism for moving the arc-shaped piece 2, for example, a support member 5 having a tapered surface 4 and a pressing member 6 for moving the arc-shaped piece 2 in the winding core axial direction A are provided, and the arc-shaped piece 2 is tapered. It is known that the arcuate piece 2 is moved in the inner peripheral surface direction of the winding core 3 by the radial angle component of the tapered surface 4 by moving the winding piece 3 along the radial direction.

[Problems to be Solved by the Invention] However, the chuck structure using the split-type piece as described above has the following problems.

First, in the structure shown in FIG. 7, the arc-shaped piece 2
In order to move the required amount in the radial direction by a necessary amount, the stroke on the tapered surface 4 and the stroke of the pressing member 6 must be expected to be considerably large, so that the width of the winding core chuck 1 in the winding core axial direction A is large to some extent. I have no choice. In the sheet-like material slitter, as shown in FIG. 9 and FIG. 10, the cut strip-shaped sheet-like material 7 is wound around the winding core 3 arranged in a zigzag manner in the winding portion. The winding core chuck 1 is provided on the winding arm 8 and the winding core 3 is provided.
Although it is retracted to the winding arm 8 side at the time of attachment / detachment, the winding arm 8 needs to be set at a position where the winding core 3 can be mounted / removed with a margin when the winding core chuck 1 is retracted. Therefore, when the width of the winding core chuck 1 is increased, the adjacent winding arms 8 interfere with each other, which causes a problem that the narrow band-shaped sheet 7 cannot be slit. Further, when the width of the winding core chuck 1 becomes large,
The required movement stroke of the take-up core chuck for detaching the take-up core 3 becomes large, and when the take-up core 3 is removed, troubles such as the take-up core 3 being caught by the take-up core chuck 1 are likely to occur. There is also the problem of becoming.

In order to prevent the eccentric rotation of the winding core 3, the winding core 3 needs to be accurately centered and held by the winding core chuck 1. However, since there are many sliding portions, there is a high probability that the arcuate pieces 2 will not move in the radial direction in exact synchronization, and there is a possibility that the winding core 3 may not be accurately centered. If the radial expansion of each arc-shaped piece 2 is not sufficient, the winding core 3 may not be held uniformly from the inner peripheral surface, and the rotational driving force from the winding core chuck 1 to the winding core 3 may be increased. There is a problem that the transmission is not sufficiently performed and slip may occur during this period.

Also, when the take-up core chuck is removed with the take-up sheet roll placed on the carriage after the sheet-like material has been wound, the take-up chuck is axially moved by friction between the take-up core chuck and the inside of the take-up core. When the sheet roll moves in the detaching / attaching direction), the sheet roll also moves, and there is a problem that the sheet-like material that has been carefully wound is displaced on the carriage.

Further, in the conventional chucking of the take-up core, the operator chucks the take-up core while supporting it by hand. , And a person who performs the chucking operation is required separately, or his / her hand is placed near the end of the winding core.Therefore, place a hand between the winding core chuck and the winding core that move in the axial direction. There is also the problem of being trapped.

A first object of the present invention is to prevent the winding core and the sheet roll from moving in the axial direction as the winding core chuck moves in the axial direction when the wound sheet roll is placed on a carriage and the winding core chuck is removed. The purpose of this is to prevent the rolled-up sheet-like object from shifting on the trolley.

A second object of the present invention is to enable chucking of the winding core without an operator supporting the winding core, and also to position the winding core in the axial direction, thereby saving labor and improving safety.
The aim is to improve the positioning accuracy.

[Means for Solving the Problem] A winding arm of a slitter according to the present invention which meets the above-mentioned object supports a cylindrical winding core for winding a sheet-like object rotatably at both ends of the core and the core. In a winding arm of a pair of slitters arranged on both sides of the winding core, which comprises a winding core chuck that moves back and forth in the axial direction, (A) Each winding arm has both end surfaces of the winding core, Core pressing means for pressing in opposite directions are provided, and (B) the core pressing means comprises a core pressing member and an air cylinder for fixing the core pressing member to the output rod, and the core pressing member is the winding core. The air cylinder is a separate member independent of the chuck, and the air cylinder is fixed to the winding arm.

Further, desirably, the winding arm is further provided with a core receiving means.

[Operation] In the winding arm having the above-described configuration of the present invention, the core receiving means retracted to the winding arm side is projected,
Place a new winding core on the core receiving means. When the winding core is placed on the core receiving means, the center of the winding core substantially coincides with the center of the winding core chuck.

Next, when the core pressing means for pressing both end surfaces of the winding core are projected, the axial position of the winding core is positioned more accurately. By this positioning, when a new winding core is placed on the core receiving means, it is not necessary to pay much attention to the axial position, and the work is simplified. Then, the winding core chuck is inserted from both end surfaces of the winding core to grip the winding core. At that time, since the centers of the winding core and the winding core chuck are substantially coincident with each other, the winding core chuck is smoothly inserted into the winding core. The core receiving means is
Since the winding core is arranged so that there is a slight gap between the winding core and the core receiving means while being held by the winding core chuck, the core receiving means that has finished its function can be wound without any problem. It is retracted to the take-up arm side.

As described above, the mounting of the new winding core is completed, the core pressing means is retracted to the winding arm side, and then the winding of the sheet-like material is started.

Then, a new winding core is installed through the above process,
After the winding of the sheet-like material, the winding is completed when the winding amount reaches a predetermined amount. Although the rolled roll of sheet material has a considerable weight, the winding arm is moved so that the rolled roll of sheet material is received by the carriage.

Next, after the both ends of the winding core are pressed by the core pressing means, the winding core chuck is released and moved in the axial direction of the winding core, and the winding core chuck is removed from the winding core. At this time,
Since the axial movement of the winding core is restricted by the core pressing means, even if a force is generated in the axial direction of the winding core when the winding core chuck is pulled out from the winding core, the winding core and the winding core The sheet-shaped material wound around the core does not move in the axial direction of the winding core, and the rolled-up sheet-shaped material is prevented from shifting on the carriage.

In this device, the core pressing means is provided on each winding arm, the core pressing is configured as a separate member independent of the winding core chuck, and the air cylinder for operating it is fixed to the winding arm. Therefore, the operation of the core pressing means can be made completely independent of the operation of the winding core chuck, and the target operation as described above can be reliably obtained.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show a winding arm of a slitter according to an embodiment of the present invention. In the figure, reference numeral 10 denotes a winding core made of a cylindrical body, and a strip-shaped sheet-like material (not shown) slit to a predetermined width is wound around the outer peripheral surface side. Reference numeral 11 denotes the entire winding core chuck. The winding core chuck 11 is supported by the winding arm 12 by a cylinder 13 so as to be able to move in and out (move) in the winding core axial direction A.

The winding core chuck 11 is provided with a support member 14 that is inserted into the winding core 10 from the end surface side of the winding core 10. The support member 14 is composed of a disk-shaped member, and as shown in FIG. 4, on the outer peripheral surface side, a pressing surface 16 and a winding core 10 which form a surface perpendicular to the rotation center axis 15 of the support member 14. An outer peripheral surface 50 concentric with the rotation center shaft 15 and an outer peripheral surface 51 to which the ring-shaped rubber body 32 is fitted are formed so as to have an appropriate gap δ with the inner surface of the. The outer peripheral surface 50 is for minimizing the partial deformation when the ring-shaped rubber body 32 is partially deformed due to the weight when a large amount of the sheet-shaped material is wound around the winding core 10 and the concentricity goes wrong. The gap δ is usually 0.1 to 1.0 mm, preferably 0.1 to 0.3 mm. Support member 14
Is configured integrally with the drive shaft 17 in this embodiment (however, it may be configured separately). Pulley 18 on drive shaft 17
Are connected to each other, and the rotational driving force is transmitted via a pulley 18 by an appropriate means such as a timing belt. The drive shaft 17 is rotatably supported by bearings 20 and 21 built in the moving housing 19, and is movable in the winding core axial direction A as the cylinder 13 moves the moving housing 19 in the winding core axial direction A. Has become.

At the tip end side of the support member 14 in the winding core 10 insertion direction, a bolt is
A disc-shaped spring retainer 23 is fixed by 22. A piston 24 is interposed between the spring retainer 23 and the support member 14. On the outer circumference of the piston 24, an O-ring 25 that seals with the inner peripheral surface of the support member 14 is fitted, and the piston 24 is supported by the support member 14 so as to be movable in the winding core axial direction A. There is. The space formed by the piston 24 and the support member 14 is formed in the air cylinder chamber 26. In addition, a spring 27 is provided between the piston 24 and the spring retainer 23.
Is installed. The spring 27 is a disc spring 3 in this embodiment.
It is made up of layers stacked in series and biases the piston 24 toward the drive shaft 17 against the spring retainer 23.

A boss portion 28 of the piston 24 extends through the spring retainer 23, and a disc-shaped pressing member is attached to the tip side of the boss portion 28 by a bolt 29.
30 is installed. The pressing member 30 is provided with a space from the spring retainer 23, and the supporting member is provided on the outer peripheral side thereof.
A pressing surface 31 facing the pressing surface 16 of 14 is formed. A ring-shaped rubber body 32 is interposed between the pressing surfaces 16 and 31. The ring-shaped rubber body 32 is fitted on the outer peripheral surface of the support member 14 over the entire circumference, and the rotation center shaft 15 of the support member 14 is
It is installed concentrically with. The ring-shaped rubber body 32 moves the pressing member 30 in the direction of the drive shaft 17 so that the pressing surfaces 16 and 31 are moved.
Clamping force is applied between the winding core 10 and the outer peripheral surface side of the ring-shaped rubber body 32 by elastic deformation caused by the clamping force.
It is configured so as to project in the direction of the inner peripheral surface, to be in close contact with the inner peripheral surface and to be able to press the inner peripheral surface. This ring-shaped rubber body 32
As shown in FIG. 5 (a), the rubber body 32 is slightly recessed on the inner peripheral surface side of the rubber body 32 in consideration of elastic deformation due to the clamping pressure.
Then, as shown in FIG. 5B, when the ring-shaped rubber body 32 is elastically deformed by being pressed between the pressing surfaces 16 and 31, its inner peripheral surface side is brought into close contact with the outer peripheral surface 51 of the support member 14. It has become. Considering the above-mentioned operation, the material of the ring-shaped rubber body 32 is preferably a rubber-like material having elasticity and a high Poisson's ratio.

The take-up arms 12 are provided on both sides of the take-up core 10 shown in FIG. 6, and the take-up core chucks 11 are provided on both sides of the take-up core 10. The core 10 is supported from both sides.

Next, a mechanism for moving the pressing member 30 with respect to the support member 14 in this embodiment will be described.

A coupler 33 is attached to the movable housing 19, and an appropriate air supply means (not shown) is connected to the coupler 33 so that air supply can be controlled. The coupler 33 communicates with an air chamber 35 between the bearings 20 and 21 via an air passage 34 formed in the moving housing 19. Air chamber 35 is 0
Air is sealed by the seals formed by the rings 36 and 37 and the seal members 48 and 49. Drive shaft 17,
An air passage 38 is formed from the air chamber 35 to the air cylinder chamber 26. Therefore, the movement of the piston 24 and the pressing member 30 can be controlled by the air pressure of the air sent to the air cylinder chamber 26 and the biasing force of the spring 27.

In addition, 39 is an air cylinder, and 40 is a core retainer provided at the tip of the output rod 41 of the air cylinder 39.
When the winding core 10 is attached, the winding core 10
The position in the axial direction A can be restricted to a predetermined position.

Further, as shown in FIGS. 2 and 3, a core receiver 42 is provided on the lower surface side of the winding core 10. The core receiver 42 is
It is formed integrally with a piston portion 44 of the air cylinder 43, and the piston portion 44 is biased by a spring 45 in a direction to retract the core receiver 42. When air is supplied from the coupler 46 to the air cylinder chamber 47, the piston portion 44 and the core receiver 42 are projected to the lower surface side of the winding core 10 against the biasing force of the spring 45, and the winding core is moved to a predetermined position. You can receive it. That is, when the winding core 10 is placed on the core receiver 42, the center of the winding core 10 and the center of the winding core chuck 11 are substantially aligned with each other, and the winding core 10 is supported by the winding core chuck 11. Then, the core receiver 42 is arranged in such a positional relationship that there is a gap between the outer peripheral surface of the winding core 10 and the core receiver 42.

The operation of the embodiment apparatus configured as described above will be described below.

First, the entire take-up core chuck 11 can be easily taken in and out of the take-up core 10 by controlling the operation of the double-acting cylinder 13 and moving it integrally with the moving housing 19.

The empty take-up core 10 is positioned at a substantially predetermined position by being placed on the core receiver 42, and is positioned in the axial direction A by protruding the core retainer 40. In this state, the take-up core chuck 11 is inserted into the take-up core 10, but before insertion, that is, in a state where the take-up core 10 is not mounted, the air cylinder chamber 26 is connected to the coupler from the air supply means.
Air pressure is supplied through 33, the air passage 34, the air chamber 35, and the air passage 38, and the piston 27 resists the biasing force of the spring 27.
24, the pressing member 30 is moved in the direction away from the support member 14 (the direction opposite to the drive shaft 17). Therefore, when the pressing member 30 is moved, the pressing force of the pressing surfaces 16 and 31 on the ring-shaped rubber body 32 is released, and the elastic deformation of the ring-shaped rubber body 32 is released. In this state, there is a gap between the inner circumference of the winding core and the outer circumference of the ring-shaped rubber body 32, and the winding core chuck 11
Can be inserted into the winding core 10.

When the insertion of the winding core chuck 11 is completed, the air supply from the air supply means is stopped and the air pressure in the air cylinder chamber 26 is released. Then, the urging force of the spring 27 causes the piston
24 and the pressing member 30 are again moved to the drive shaft 17 side.
By the movement of the pressing member 30, the ring-shaped rubber body 32 is pressed by the pressing surface 1
It is pressed between 6 and 31, elastically deformed and the outer peripheral surface side is the winding core 1
It projects to the inner peripheral surface side of 0. By this overhang, the winding core 10 is held by the ring-shaped rubber body 32 from the inner peripheral surface side. After this, the core retainer 40 and the core receiver 42 move in the direction of the drive shaft 17, completing the preparation for winding.

In the above operation, it is not necessary to move the ring-shaped rubber body 32 substantially in the axial direction A of the winding core with respect to the support member 14, and the moving amount of the pressing member 30 is also the ring-shaped rubber body 32.
Since a small amount necessary for elastically deforming the winding core chuck 11 is sufficient, the width of the winding core chuck 11 in the winding core axial direction A may be small.

Further, the ring-shaped rubber body 32 extends concentrically with the support member 14 over the entire inner peripheral surface of the winding core 10, and is similarly sandwiched between the pressing surfaces 16 and 31 extending over the entire peripheral surface. Therefore, the protrusion of the outer peripheral surface due to the elastic deformation is uniformly performed over the entire circumference. Therefore, the winding core 10 placed on the core receiver 42 is naturally and accurately centered with respect to the rotation center shaft 15 of the support member 14 as the ring-shaped rubber body 32 is extended. Further, since the ring-shaped rubber body 32 is accurately centered and the ring-shaped rubber body 32 is evenly projected, the outer peripheral surface of the ring-shaped rubber body 32 presses the inner peripheral surface of the winding core 10 to hold the winding core 10 against the winding core 10. A uniform force can be obtained over the entire circumference. Therefore,
It is also possible to transmit a sufficient driving force.

Next, a description will be given of the operation after winding the sheet-like material around the winding core 10, winding a predetermined winding amount, and completing the winding.

When the rotation of the winding core chuck is stopped, the rolled roll of sheet-like material is moved from the winding radius 12 and received by a carriage (not shown) for carrying it to the next step. Next, the core retainer 40 is operated so that the core retainer 40 pushes the end surface of the winding core 10, and the winding core 10 and the rolled roll of the sheet-like material are regulated so as not to move in the axial direction of the winding core. After that, the winding core chuck 11 is pulled out from the winding core 10. At this time,
Since the trolley bears the weight of the roll of the sheet material, the roll of the sheet material does not drop even if the winding core chuck 11 is pulled out.

Further, in order to pull out the winding core chuck 11 from the winding core 10, the reverse operation of the winding preparation may be performed. That is, air pressure is supplied from the air supply means to the air cylinder chamber 26 through the coupler 33, and the piston 24 and the pressing member 30 are moved in the direction away from the support member 14 against the biasing force of the spring 27. The pinching pressure of the ring-shaped rubber body 32 is released so that there is a gap between the inner circumference of the winding core 10 and the outer circumference of the ring-shaped rubber body.
In this way, if there is a gap between the inner circumference of the take-up core 10 and the outer circumference of the ring-shaped rubber body 32, the take-up core chuck 11 can be removed, and the air cylinder 13 operates to take up the take-up core chuck 11. Is moved to the drive shaft 17 side and is withdrawn from the winding core 10. The winding core 10 on which the sheet-shaped material is wound, from which the winding core chuck 11 has been removed, remains on the carriage and is transported to the next step. By the series of operations and operations described above, mounting of a new winding core, winding of a sheet-like material, removal of a winding sheet roll, and transportation are sequentially repeated.

Further, in the apparatus of the present embodiment, the core pressing means including the core pressing member 40, the air cylinder 39, and the output rod 41 thereof is provided in each winding arm 12, and the core pressing member 40 is independent of the winding core chuck 11. Since the air cylinder 39, which is configured as a separate member and which operates the same, is fixed to the winding arm 12, the operation of the core pressing means can be made completely independent of the operation of the winding core chuck 11, and Such a target operation is surely obtained.

[Effects of the Invention] With the winding arm of the slitter of the present invention, the following effects can be obtained.

Since both ends of the winding core are pressed by the core pressing means to regulate the axial position, when removing the winding core chuck,
It is possible to prevent the take-up core from moving together in the axial direction due to being caught by the chuck, and to prevent the sheet-like object from shifting.

Also, when setting a new winding core, it is possible to position it with the core pressing means, so it is possible to set roughly without paying too much attention to the axial position, and it is possible to shorten the working time. Become.

Further, if a new winding core is supported by the core receiving means in addition to the above core pressing means, even in the case of a long and heavy winding core, the operator simply places the winding core on the core receiving means. You only have to put it on, and you can support it for a long time as in the past, or you need to support it with both hands, so it is not only possible to eliminate the waste of having to perform a chucking operation by another person, but also near the winding core chuck Since it is not necessary to support the take-up core with a hand, there is an excellent effect that it is possible to eliminate the possibility that the hand is caught between the chuck and the end surface of the core.

Furthermore, by configuring the core retainer as a separate member independent of the take-up core chuck and fixing the air cylinder that operates it to the take-up arm, the core retainer can be reliably operated. it can.

[Brief description of drawings]

1 is a longitudinal sectional view of a winding arm of a slitter according to an embodiment of the present invention, FIG. 2 is a front view of the device shown in FIG. 1, and FIG. 3 is a portion taken along line III-III in FIG. Sectional drawing, FIG. 4 is a partially enlarged sectional view of the apparatus of FIG. 1, FIG. 5 (a) and (b) is a partially enlarged sectional view around the ring-shaped rubber body of the apparatus of FIG. 1, and FIG. 1 is a schematic configuration diagram showing a state of a winding core chuck in the apparatus of FIG. 1, FIG. 7 is a schematic partial vertical sectional view of a core chuck portion of a conventional winding arm, and FIG. 8 is a split-type piece portion of the apparatus of FIG. FIG. 9 is a perspective view of a winding portion of a general slitter, and FIG. 10 is a plan view of the device shown in FIG. 10 …… Winding core 11 …… Winding core chuck 12 …… Winding arm 13 …… Cylinder 14 …… Supporting member 15 …… Rotation center shaft 16, 31 …… Pressing surface 17 …… Drive shaft 19 …… Movement Housing 23 …… Spring retainer 24 …… Piston 26 …… Air cylinder chamber 27 …… Spring 30 …… Pressing member 32 …… Ring-shaped rubber body 34,38 …… Air passage 40 …… Core retainer 42 …… Core receiver A ...... Winding core axial direction

Claims (2)

[Claims] 1. Both sides of a winding core, which comprises a winding core chuck that rotatably supports a cylindrical winding core that winds a sheet-like object at both ends of the core and that moves forward and backward in the axial direction of the core. (A) each of the winding arms of the pair of slitters is provided with core pressing means for pressing both end faces of the winding core in directions opposite to each other, (B) the core pressing The means includes a core retainer and an air cylinder that fixes the core retainer to the output rod, and the core retainer is a separate member independent of the winding core chuck. The winding arm of the slitter, which is fixed to the winding arm. 2. The winding arm further comprises core receiving means for supporting both ends of the winding core from below.
Take-up arm of the described slitter.