JPH0781810A - Method and device for installing roll sheet - Google Patents

Abstract

PURPOSE:To prevent the generation of deformation and collapse of form of a roll sheet by facing one end of a rod to an installation shaft of a roll sheet, which has a lateral core, and thereafter, pushing out the roll sheet from the one end of the rod to install the roll sheet in the installation shaft through a core tube. CONSTITUTION:A worker W operates so that a roll sheet 15 is held by a rod 6 through a core tube 14. Next, a carriage 2 is moved to position a base 3 in relation to an installation shaft 31. A starting switch 77 is turned on to input the starting signal to a control device 44, and an actuator 22 operates a pusher 21 so as to push out one roll sheet 15 from one end of the rod 6 till the end surface of the roll sheet 15 abuts on a flange 33a. An installation shaft 31 is inserted to the core tube 14 of the pushed-out roll sheet 15 to finish the installation of the roll sheet 15 in the installation shaft 31. Deformation of the roll sheet 15 due to self-weight thereof and a collapse of form thereof at the time of pushing the roll sheet 15 from one end of the rod 15 are thereby prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for mounting a roll sheet formed by winding a sheet of paper, non-woven fabric, aluminum foil, film or the like on a roll sheet mounting shaft. It can be used in a packaging line in which a sheet is unrolled from a roll sheet mounted on a sheet mounting shaft and the sheet is used as a packaging material for soap, food or the like.

[0002]

2. Description of the Related Art FIG. 4 shows a pallet 102 on a base 101.
The roll sheet 103 placed on the upper and lower sides with the axial direction being up and down
Shows a multi-indirect type robot 106 that is rotatably mounted on a roll sheet mounting shaft 104 whose axis direction is horizontal. The sheet constituting the roll sheet 103 mounted on the mounting shaft 104 is unrolled from the outer peripheral end and used as, for example, wrapping paper. The mounting shaft 104 is attached to, for example, the automatic paper splicing machine 105 with its axis centered laterally. When the unrolling of the sheet from one roll sheet 103 mounted on the mounting shaft 104 is completed, the automatic paper splicing machine 105 has an inner peripheral end portion of the sheet that constitutes the unrolled roll sheet 103. Is automatically joined to the outer peripheral end of the sheet fed from the roll sheet 103 newly mounted on the mounting shaft 104.

The robot 106 has a chuck 10 at the tip.
The roll sheet 103 is releasably held via the roll sheet 103 and the roll sheet 103 on the pallet 102 is attached to the mounting shaft 104.
It can be attached to. As shown in (1) of FIG.
The chuck 107 has a tubular bladder 108, and pressure air can be supplied to and discharged from the bladder 108 from a pressure air source (not shown) via an air passage 109. After inserting the bladder 108 into the center hole of the roll sheet 103 and expanding the bladder 108 with pressurized air, the chuck 1
07 holds the roll sheet 103. The robot 1
06 is moved by the movement indicated by the arrow in FIG.
Mounted in the center hole of the roll sheet 103 held by
04 is inserted, and then the pressure air is released from the bladder 108 to pull out the chuck 107 from the center hole of the roll sheet 103.

[0004]

In the configuration shown in FIG. 4,
As shown in (2) of FIG. 5, when the roll sheet 103 held by the chuck 107 is lifted from the pallet 102, the sheets forming the roll sheet 103 are relatively displaced in the axial direction of the roll sheet 103. The roll sheet 103 may lose its shape, causing wrinkles and tears in the sheet. In particular, in the case of a sheet used as a packaging material, hot melt may be applied after the packaging to adhere the sheets to each other. In such a case, the sheet cannot be strongly wound. The roll sheet 103 is likely to lose its shape as shown. Therefore,
The roll sheet 103 may be placed on the axis A as shown in (1) of FIG. 6 or on a plane as shown in (2) of FIG. The sheet 103 is deformed by its own weight as shown in the drawing, and the sheet cannot be smoothly fed out, and causes wrinkles and tears of the roll sheet 103. Further, when the weight of the roll sheet 103 becomes large, the robot 106 becomes large, and a safety fence 111 and a large control panel 112 for the robot 106 are required, which requires a large space and equipment cost. Further, since the structure is complicated, frequent maintenance and inspection are required, and since the operation is complicated, it requires skill in handling.

Therefore, as shown in FIG. 7, the roll sheet 103 is placed on the conveying surface of the belt conveyor 121 with the axial direction being horizontal, and the roll sheet 103 is conveyed in the axial direction, whereby the axial center is conveyed. It is conceivable to rotatably mount the roll sheet mounting shaft 104 in the lateral direction.

However, in the configuration shown in FIG. 7, when the worker W supplies the roll sheet 103 onto the transport surface of the belt conveyor 121, the supply is delayed and the roll sheet 103 is fed between the plurality of roll sheets 103 on the transport surface. If a gap is created, the roll sheet 103 is unstablely supported and falls as shown by the chain line in the figure, and the number of roll sheets 103 that can be placed on the transport surface is reduced by the gap. Further, when the roll sheet 103 is placed on the conveying surface with the axial direction thereof being horizontal, there is a problem that the roll sheet 103 is deformed by its own weight as described above.

Therefore, as shown in FIG. 8, a plurality of roll sheets 103 are arranged side by side with the axial direction of the roller table 131 in a horizontal direction with no gap between them, and the pusher 1 is used.
It is conceivable that the roll sheet 103 is pushed out from the roller table 131 by the movement of 33 and is rotatably mounted on the roll sheet mounting shaft 104 whose axial center direction is horizontal. In the roller table 131, a plurality of rotating rollers 132 are arranged in parallel in two rows, the rotation axes of the rollers 132 in each row are along the radial direction of the roll sheet 103, and the roller table 131 is directed downward toward the center of the roll sheet 103. There is. The pusher 133 is arranged between the two rows of rollers 132, and the actuator 134 that drives the pusher 133 in the axial direction of the roll sheet 103.
Is provided. The actuator 134 is a rodless double-acting air cylinder. A magnet is attached to a piston 134b that reciprocates in a rectangular cylinder 134a, and a slider 134c attracted to the magnet is a rectangular cylinder 13.
4a is attached to the outer periphery of 4a so as to be able to reciprocate
The pusher 133 is connected to 34c.

However, in the structure shown in FIG. 8, the weight of the roll sheet 103 acts on the roller 132, so that the friction between the outer peripheral bottom surface of the roll sheet 103 and the roller 132 increases. Therefore, when the roll sheet 103 is pushed by the pusher 133, as shown in FIG. 9, the sheets forming the roll sheet 103 are relatively displaced in the axial direction, and the shape is lost. Further, when the roll sheet 103 is placed on the roller 132 with the axial direction being horizontal,
As described above, there is a problem that the roll sheet 103 is deformed by its own weight.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roll sheet mounting method and mounting device which can solve the above problems.

[0010]

According to a method of mounting a roll sheet of the present invention, a roll supported by a base holds a roll sheet with its axis oriented horizontally and a core tube, and one end of the rod is oriented laterally. The roll sheet is mounted on the mounting shaft via the core tube by facing the roll sheet mounting shaft and then extruding the roll sheet from one end of the rod.

The roll sheet mounting apparatus of the present invention comprises:
A base, a rod supported by the base and capable of holding the roll sheet with the axis of the sideways through a core tube, a pusher movable along the longitudinal direction of the rod, and an actuator for driving the pusher. The roll sheet held by the rod can be pushed out from one end of the rod by the movement of the pusher. The base is movable, and there is a means for positioning the base with respect to the mounting shaft so that the roll sheet extruded from one end of the rod can be mounted on the roll sheet mounting shaft with the axis laterally oriented through the core tube. It is preferably provided.

[0012]

According to the structure of the present invention, since the roll sheet is held by the rod via the core tube, the roll sheet is not subjected to its own weight from the outer periphery. This makes it possible to prevent the roll sheet from being deformed by its own weight and from losing its shape when it is pushed out from one end of the rod, even if the roll sheet is held with its axis centered laterally. By making the base supporting the rod for holding the roll sheet movable, the roll sheet is held by the rod at a position where there is no obstacle around the rod, and a means for positioning the base with respect to the mounting axis is provided. Can improve work efficiency. In addition, the base does not interfere with the maintenance and inspection around the mounting axis.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

The roll sheet mounting apparatus 1 shown in FIGS. 1 to 3 has a carriage 2. The carriage 2 has a base 3, wheels 4 and a handle 5 attached to the base 3, and can be moved by a worker W having the handle 5.

A rod 6 is supported by the base 3. The rod 6 includes a rod main body 7 supported in a cantilever shape by the base 3, and a plurality of balls 9 rotatably juxtaposed on the rod main body 7 along a longitudinal direction of the rod 6 via a ball holder 8. And a stopper 10 attached to the free end of the rod body 7, one end of which is a free end. A roll sheet 15 formed by winding a sheet of paper, non-woven fabric, aluminum foil or the like around the core tube 14 made of paper, plastic or the like by the rod 6.
However, a plurality of them are held with their axes centered laterally. This holding is performed by inserting the rod 6 into the core tube 14 and supporting the inner peripheral surface of the core tube 14 with the balls 9. The stopper 10 rolls the roll sheet 15 when the carriage 2 is stopped.
Is prevented from jumping out of the rod 6 due to inertia, and is directed upward as it goes to the tip. The core tube 14 has such strength that it does not deform due to the weight of the roll sheet 15 when the roll sheet 15 is held via the core tube 14.

A pusher 21 is arranged below the rod 6. This pusher 21 is L-shaped when viewed from the side,
It can be brought into contact with the end surface of the roll sheet 15 held by the rod 6, and can be reciprocated along the longitudinal direction of the rod 6 by being driven by the actuator 22. The actuator 22 is a rodless double-acting air cylinder, and a piston 22b that reciprocates in a rectangular cylinder 22a.
A magnet is attached to the magnet and is attracted to the magnet 2
2c is reciprocally attached to the outer periphery of the rectangular cylinder 22a, and the pusher 21 is connected to the mover 22c. By moving the pusher 21, the roll sheet 15 held by the rod 6 can be pushed out from one end of the rod 6.

The roll sheet 15 pushed out from one end of the rod 6 has a roll sheet mounting shaft 31 through the core tube 14.
Be attached to. The mounting shaft 31 is attached to, for example, a known automatic paper splicer or the like with its axis centered laterally. This attachment is performed by attaching a tubular member 33 with a lateral axis to the housing 32 of the automatic paper splicer or the like (core tube attachment body), and inserting the mounting shaft 31 into the tubular member 33 so as to be movable in the axial direction. It A flange 33a for receiving the end surface of the roll sheet 15 is provided at the outer end of the cylindrical member 33, and the mounting shaft 31 moves axially to project from the flange 33a to the mounting position outward from the flange 33a. Also, the position can be changed to the core tube excluding position which is immersed inward.

The mounting shaft 31 is displaced to the core tube removing position at the time of replacement of the roll sheet 15 mounted on the mounting shaft 31, whereby the core tube 14 of the roll sheet 15 is replaced.
Falls from the mounting shaft 31. In order to automatically perform the displacement to the core tube removing position, the sheet forming the roll sheet 15 is colored in the vicinity of the inner peripheral edge thereof, and the optical sensor 41 for detecting the color change of the sheet and the core tube 14 are provided. A drop confirmation optical sensor 45, a double-acting air cylinder 42 that axially reciprocates the mounting shaft 31, and two air chambers partitioned by the piston of the air cylinder 42 are selectively used as a pressure air supply source (not shown). There is provided an electromagnetic valve 43 which is connected to the control valve 44 and a control device 44 which controls the electromagnetic valve 43 according to signals from the sensors 41 and 45. That is, the control device 44 switches the electromagnetic valve 43 to the contraction side of the air cylinder 42 in response to the color change detection signal from the sensor 41, and switches the electromagnetic valve 43 to the expansion side of the air cylinder 42 in response to the drop confirmation signal of the core tube 14 from the sensor 45. Switch to. Further, a double-acting air cylinder (not shown) is provided which drives the air cylinder 42, the tubular member 33, the flange 33a and the mounting shaft 31 to reciprocate in the axial direction as a whole.

A means for positioning the base 3 with respect to the mounting shaft 31 is provided so that the roll sheet 15 pushed out from one end of the rod 6 can be mounted on the mounting shaft 31. That is, as shown in FIG. 3, in the housing 32 of the core tube mounting body, a pair of receiving members 51 and 52, whose widths widen toward the outside, correspond to the height of the base 3 from the floor F. Installed in. Both sides of the front part of the base 3 become narrower toward the front ends along the inner surfaces of the receiving members 51, 52 which face each other, and the both sides of the front part are rotatable about the vertical axis. A plurality of rollers 53 are attached. As a result, the carriage 2 is moved until the front part of the base 3 enters between the receiving members 51, 52, and the rollers 53 are brought into contact with the inner surfaces of the receiving members 51, 52 that face each other. One end of the rod 6 and the mounting shaft 31 can face each other with a slight gap so that the roll sheet 15 pushed out from one end of the rod 6 can be mounted on the mounting shaft 31.

In order to prevent the carriage 2 from moving after the positioning, a protrusion 55 is provided on the lower surface of the base 3, and a pawl 56 is mounted on the floor F so as to be swingable about a horizontal shaft 57. A telescopic rod of an air cylinder 58 is attached to 56 so as to be rotatable relative to the center of the horizontal axis 59, and the cylinder tube of the air cylinder 58 is attached to the housing 32 by the horizontal axis 6.
An electromagnetic valve 61 is provided which is rotatably attached to the zero center and selectively connects two air chambers partitioned by the piston of the air cylinder 58 to a pressurized air supply source (not shown). Further, when the positioning is performed, the sensor 62 for detecting the carriage 2 is operated by the control device 4
4 is connected. The control device 44 includes a sensor 62
The electromagnetic valve 61 is switched to the extension side of the air cylinder 58 in response to a truck detection signal from the claw 56, and the pawl 56 swings and engages with the protrusion 55 to prevent the truck 2 from moving. Further, a release switch 65 connected to the control device 44 is provided, and when the operator W operates the release switch 65, the control device 44 switches the electromagnetic valve 61 to the reduction side of the air cylinder 58. The claw 56 swings to release the engagement with the protrusion 55, and the carriage 2 becomes movable.

When the positioning is done, the actuator 22 for driving the pusher 21 is connected to the pressurized air supply source. That is, the two air chambers partitioned by the piston 22b of the actuator 22 are the quick coupler 71 attached to the carriage 2 via the pipe.
Of the quick coupler 7 connected to the female member 71a of
The male member 71b of No. 1 is attached to the housing 32, and the female member 71a and the male member 71b thereof are the base 3 and the mounting shaft 31.
The relative positional relationship is such that they are connected if they are positioned. The actuator 2 is attached to the male member 71b.
An electromagnetic valve 72 that selectively connects two air chambers partitioned by two pistons 22b to a pressure air supply source (not shown) is connected, and this electromagnetic valve 72 is connected to the control device 4
4 is controlled by the controller 44 in response to a start switch 77 connected to the No. 4 and a drop confirmation signal of the core tube 14 from the sensor 45. That is, the control device 44 uses the start switch 7
7 from the start signal or the core tube 14 from the sensor 45
Signal from the solenoid valve 43 to the air cylinder 4
2 is switched to the extension side and the mounting shaft 31 is set to the mounting position, the actuator electromagnetic valve 72 is set to the pusher 2
When the roll sheet 15 is pushed out, the actuator electromagnetic valve 72 is moved to the side where the pusher 21 moves in the direction opposite to the direction in which the pusher 21 pushes out the roll sheet 15. Switch.

In order to mount the roll sheet 15 on the mounting shaft 31 with the above structure, first, as shown in FIG. 2, an operator W holds the roll sheet 15 by the rod 6 via the core tube 14. Next, the carriage 2 is moved to position the base 3 with respect to the mounting shaft 31. As a result, the pawl 56 swings and engages with the projection 55, and the movement of the carriage 2 is blocked.
Further, the actuator 22 for driving the pusher 21 is connected to the pressurized air supply source via the quick coupler 71. Next, the start switch 77 is turned on to input a start signal to the control device 44. As a result, the pusher 21 moves one roll sheet 15 from one end of the rod 6 to the flange 33a from the end surface of the roll sheet 15 by the actuator 22.
The roll shaft 15 is pushed out until it hits, and the mounting shaft 31 is inserted into the core tube 14 of the roll sheet 15 thus pushed out, so that the roll sheet 15 is mounted on the mounting shaft 31. After that, the actuator 22 returns the pusher 21 to the position where the pressing of the roll sheet 15 is released. Next, the tubular member 33, the flange 33a, the mounting shaft 31, and the air cylinder 42 are moved to the trolley 2 side as a whole by an air cylinder (not shown), and the roll sheet 15 mounted on the mounting shaft 31 holds the rod 6 on the rod 6. When the roll sheet 15 is pushed back, the cylinder member 33, the flange 33a, the mounting shaft 31
The air cylinder 42 is returned to the original position, and a gap is provided between the roll sheet 15 mounted on the mounting shaft 31 and the roll sheet 15 held by the rod 6. When the sheet is unwound from the roll sheet 15 mounted on the mounting shaft 31 and it is time to replace the roll sheet 15, the mounting shaft 31 is displaced to the core tube removing position, and the core tube 14 into which the mounting shaft 31 is inserted is moved. Falls. After the core tube 14 is removed, the mounting shaft returns to the mounting position, and after this return, the actuator 22 moves the pusher 21 to push the next roll sheet 15 out from one end of the rod 6 and the mounting shaft 31.
Attach to. When all the roll sheets 15 held by the rod 6 are pushed out by repeating the above-mentioned operation, the release switch 65 is turned on to release the engagement between the claw 56 and the projection 55, thereby making the carriage 2 movable. New roll sheet 15
Is held by the rod 6 via the core tube 14. It should be noted that two identical trolleys 2 are prepared, and one trolley 2 is used to mount the shaft 3
While the roll sheet 15 is being mounted on the first roll sheet 1, the roll sheet 15 may be preliminarily supplied to the rod 6 of the other trolley to stand by.

According to the above structure, since the roll sheet 15 is held by the rod 6 via the core tube 14, the roll sheet 15 is not subjected to its own weight from the outer periphery. Accordingly, even if the roll sheet 15 is held with its axis centered laterally, it is possible to prevent the roll sheet 15 from being deformed by its own weight and from losing its shape when it is pushed out from one end of the rod 15. By making the base 3 supporting the holding rod 6 of the roll sheet 15 movable, the roll sheet 15 is held by the rod 6 at a position where there is no obstacle around, and the base 3 is attached to the mounting shaft 31. Work efficiency can be improved by providing a means for positioning with respect to each other. Further, since the base 3 is movable, it does not interfere with the maintenance and inspection of the peripheral portion of the mounting shaft 31.

The present invention is not limited to the above embodiment. For example, the base 3 may be moved by an automated guided vehicle. Further, although the rod 6 is shown as supporting the roll sheet 15 via the plurality of balls 9, it may be supported via a rotating roller or may be directly supported by the rod body 7. Although a rodless double-acting air cylinder, which is advantageous in terms of space, is used as the actuator 22, the pusher 21 is driven to drive the rod 6
The structure is not particularly limited as long as the roll sheet 15 can be extruded from one end of the rod, and the method of the present invention can be carried out by manually extruding the roll sheet from one end of the rod without using an actuator.

[0025]

According to the method of the present invention, the deformation and deformation of the roll sheet can be prevented, the method of the present invention can be carried out by the apparatus of the present invention, and the structure is simple and maintenance and inspection can be performed easily and easily. It is easy to operate and requires no skill to handle, improving work efficiency.

[Brief description of drawings]

FIG. 1 is a side view of a roll sheet mounting apparatus according to an embodiment of the present invention in a use state.

FIG. 2 is a side view of the roll sheet mounting apparatus according to the embodiment of the present invention.

FIG. 3 is a plan view of a roll sheet mounting device according to an embodiment of the present invention.

FIG. 4 is a perspective view of a roll sheet mounting device according to a first conventional example.

FIG. 5 is a sectional view of a chuck of a roll sheet mounting apparatus of a first conventional example, and FIG.

6A and 6B are diagrams showing problems of the conventional example.

FIG. 7 is a side view of a roll sheet mounting device according to a second conventional example.

8A and 8B are a side view and a partial front view of a roll sheet mounting device of a third conventional example.

FIG. 9 is a diagram showing a problem of the third conventional example.

[Explanation of symbols]

 3 Base 6 Rod 14 Core tube 15 Roll sheet 21 Pusher 22 Actuator 31 Mounting axis

Claims (3)

[Claims] 1. A rod supported on a base holds a roll sheet with its axis centered laterally via a core tube, and one end of the rod is made to face a roll sheet mounting shaft whose axis is laterally oriented, and then one end of the rod. A method for mounting a roll sheet, comprising: extruding the roll sheet from the core to mount the roll sheet on a mounting shaft via a core tube. 2. A base, a rod supported by the base and capable of holding a roll sheet with the axis of the roll sideways through a core tube, a pusher movable along the longitudinal direction of the rod, and An apparatus for mounting a roll sheet, comprising: an actuator that drives the pusher, and the roll sheet held by the rod can be pushed out from one end of the rod by the movement of the pusher. 3. The base is movable so that the roll sheet extruded from one end of the rod can be mounted on a roll sheet mounting shaft having an axis laterally oriented through a core tube. The apparatus for mounting a roll sheet according to claim 2, further comprising means for positioning the roll sheet.