JPH0811398B2 - Cutting interruption device in rotary cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention is designed to pass an object to be cut between a die-cut roller and a backup roller and to cut the object to be cut into a desired shape by the die-cut roller. The present invention relates to a rotary cutting device, and more particularly to a cutting interrupting device that interrupts the cutting of an object to be cut by the die cutting roller.

"Prior Art" Conventionally, as a rotary cutting device used for a roll labeler, a die-cut roller and a backup roller that are rotatably supported respectively, and a press-contact means for pressing the die-cut roller and the backup roller against each other are provided.
It is known that a roll label is passed between a die-cut roller and a backup roller, which are pressed against each other, and the roll label is cut out into a label of a required shape by the die-cut roller.

In the roll label, the labels cut out in the required shape are sequentially attached to the container, and the remaining roll labels with the labels cut out are wound around a winding roller or finely cut by a cutting device to be collected.

By the way, in the case where only one container is successively supplied in a chipped manner, conventionally, after the operation of the rotary cutout device is continued to cut out a label to be attached to the absent container, The label is collected by a label collecting mechanism provided on the downstream side of the rotary cutting device.

In addition, as another means, when it is detected that there is no container, the die cut roller and the backup roller are separated while continuing the supply of the roll label to interrupt the cutting of the label that should not be attached to the absent container. Then, when the label portion is passed, the die cutting roller and the backup roller are again brought into pressure contact with each other to restart the cutting of the label.

"Problems to be Solved by the Invention" However, the former means requires a label collecting mechanism separately from the rotary cutting device, which requires a space for it and is expensive, and the latter means Since it is difficult to momentarily separate the die-cut roller and backup roller from the roll label that is conveyed at high speed, if the detector detects that there is no container, the roll labeler is required It is necessary to separate and re-contact the die-cut roller and the backup roller in the state of shifting to the low speed operation state, resulting in a decrease in processing speed.

[Means for Solving the Problems] In view of such circumstances, the present invention is configured such that, in the rotary cutting device, the pressure contact means is composed of one or more cylinder devices, and pressure fluid to the cylinder devices is used. Of the die-cut roller and the backup roller by pressurizing the die-cut roller and the backup roller to press the die-cut roller and the backup roller against each other. Is a pressure fluid supply circuit for changing the contact pressure of the object to be cut into a small pressure contact force that allows the object to pass without being cut out.

[Operation] According to the above configuration, in order to interrupt the cutting of the object to be cut,
Since it is sufficient to reduce the pressure contact force between the die-cut roller and the backup roller without separating them from each other, it can be performed in an extremely short time as compared with separating them. As a result, the cutting of the object to be cut can be interrupted momentarily without lowering the operating speed of the rotary cutting device, so that the processing speed is not lowered and the pressure contact force having the above-mentioned function is lowered. The means can be manufactured at a sufficiently lower cost than the above label collecting mechanism.

[Example] An example in which the present invention is applied to a roll labeler will be described below. In FIG. 3, a strip-shaped roll label 2 pulled out from a supply reel 1 is fed through a plurality of rollers including a tension roller 3 and a feed roller. Guided by 4,
Further, the feed roller 4 feeds between the die cutting roller 6 and the backup roller 7 which constitute the rotary cutting device 5.

Although not shown, the die-cutting roller 6 is formed with a cutting blade along the contour of the label for cutting out, for example, an elliptical label from the roll label 2, and the die-cutting roller 6 forms one sheet of a required shape. When the label L is cut out, the cut-out label L is adsorbed to the vacuum drum 8 and conveyed, and then glue is applied to the back surface of the label L by the gluing device 9.

On the other hand, the container 10 is conveyed in a front-back contact state by the conveyor 11, and is passed to the star wheel 13 with a required front-back interval formed by the dimming wheel 12.
The star wheel 13 is rotated in synchronization with the vacuum drum 8, and the label L conveyed by the vacuum drum 8 is adhered to the container 10 conveyed by the star wheel 13 by the adhesive force of the glue. And container 10
The label L attached to the container 10 is completely attached to the container 10 by a pair of wiping rollers 14 and a wiping belt 15 provided on the downstream side of the star wheel 13.

The remaining roll label 2a obtained by sequentially cutting out the label L is supplied to the cutting device 17 via the plurality of rollers 16. The cutting device 17 cuts the roll label 2a into small pieces, and for example, a known cutting device such as a shredder is used as it is.

However, as shown in FIG. 1, the rotary cutting device 5 is provided with a box-shaped base frame 21 which is open on both side surfaces. The upper and lower surfaces of the base frame 21 are, as shown in FIG. A rectangular opening from its center to one end
22 are formed respectively, and the die-cut roller 6 is vertically arranged at the central portion on the other end side and rotatably supported.

A U-shaped movable frame 23 is fitted in the opening 22 of the base frame 21 so as to be movable back and forth along the longitudinal direction of the opening 22, and the backup is provided on the free end side of the U-shaped movable frame 23. The backup roller 7 is pressed against the die-cut roller 6 by arranging the roller 7 in the vertical direction and rotatably supporting the roller 7 and pressing the movable frame 23 toward the die-cut roller 6.

The die-cut roller 6 is interlocked with a motor (not shown) via a drive shaft 24, and the backup roller 7
Gears 25, 26 provided on the die-cut roller 6 and the backup roller 7, respectively, are meshed with each other, thereby interlocking with the motor.

The movable frame 23 is configured in a U-shape with upper and lower support plates 30 arranged in the horizontal direction and a vertical connecting member 31 that connects between one side ends of both support plates 30. Board 30
Is slidably fitted in the opening 22 of the base frame 21, and the lower support plate 30 is supported by a support member 32 attached to the lower surface of the base frame 21, whereby the movable frame 23 is moved from the base frame 21. I try not to drop it.

Further, two adjusting screws 33 are respectively screwed to the upper and lower positions on the side wall of the base frame 21, and the tips of the adjusting screws 33 are brought into contact with the connecting member 31 to rotate the adjusting screws 33. By doing so, the pressure contact force between the die-cut roller 6 and the backup roller 7 can be adjusted.

Further, the backup roller 7 is rotatably supported on an eccentric shaft 34 which is rotatably supported on the movable frame 23, and is mounted on the movable frame 23 and a swing arm 35 fixed to the upper end of the eccentric shaft 34. The oscillating arm 35 is rotated by a cylinder device 37 provided between the bracket 36 and the eccentric shaft.
Rotate 34, and thereby the backup roller 7
Can be separated from the die-cut roller 6.

The rocking arm 35 and the eccentric shaft 34 integrated with the rocking arm 35 are rotated clockwise in FIG. 2 by the cylinder device 37 constituting the pressure contact means, and the rocking arm 35 is normally a movable frame.
The backup roller 7 is held at a contact position where it comes into contact with the screw stopper 38 provided at 23, that is, at the position where the backup roller 7 is displaced toward the die-cut roller 6 side. It is supposed to be done in the state.

However, as shown in FIG. 2, a pressure fluid can be supplied to the cylinder device 7 from a pressure fluid supply circuit.
The pressure fluid from the pressure source 41 can be introduced into one pressure chamber 46 in the cylinder device 37 via the first electromagnetically biasing valve 42 and the sequence valve 43 connected in series. Then, in this state, the swinging arm 35 is held in contact with the screw stopper 38 so that the backup roller 7
Is brought into pressure contact with the die-cut roller 6 with a predetermined large pressure contact force, and the label L having a desired shape can be cut out from the roll label 2 supplied between the two by the die-cut roller 6.

The pressure fluid from the pressure source 41 passes through the electromagnetic isolation valve 45 connected in parallel with the first electromagnetic urging valve 42 and the sequence valve 43, and the other pressure chamber 44 in the cylinder device 37.
In this case, the swing arm 35 is rotated to a position away from the screw stopper 38,
The backup roller 7 can be separated from the die cut roller 6.

Further, in the present invention, the pressure contact force lowering means 48 for lowering the pressure contact force between the die-cut roller 6 and the backup roller 7 to the pressure contact force for passing the roll label 2 without cutting them while keeping contact with the roll label 2 is provided. ing.
The pressure contact force reducing means 48 includes a second electromagnetic urging valve 49 connected in series with each other and a pressure control valve 50 for reducing the fluid pressure from the pressure source 41 to a predetermined pressure. A means 48 is connected between the pressure source 41 and the sequence valve 43 in parallel with the first electromagnetically biasing valve 42.

The sequence valve 43 includes the first electromagnetic energizing valve 42 and the second electromagnetic energizing valve 42.
When the pressure fluid is supplied from either one of the electromagnetic biasing valve 49, the pressure fluid is supplied to the pressure chamber of the cylinder device 37.
The pressure fluid can be prevented from leaking to the other electromagnetically actuated valve side.

In the above configuration, the first electromagnetically biasing valve 42 is excited in the normal operating state, and the second electromagnetically biasing valve 49 and the electromagnetic isolation valve 45 are demagnetized. In this state, the pressure fluid from the pressure source 41 is discharged. Is introduced into one of the pressure chambers 46 in the cylinder device 37 via the first electromagnetic biasing valve 42 and the sequence valve 43,
The other pressure chamber 44 is open to the atmosphere via an electromagnetic isolation valve 45.

In this state, as described above, the swing arm 35 is held at the position where it abuts on the screw stopper 38 to bring the backup roller 7 into pressure contact with the die-cut roller 6 with a predetermined large pressure contact force. The label L having a required shape is cut out from the roll label 2 supplied to the die by the die-cut roller 6.

In this state, for example, when it is detected by a detector (not shown) that only one container to which the label L is to be attached does not exist, the first electromagnetic bias valve is synchronized with the movement of the container that does not exist. 42 is demagnetized and the second electromagnetically actuated valve
49 is excited, and the pressure introduced into the pressure chamber 46 is reduced to a predetermined pressure by the pressure control valve 50.

As a result, the pressure contact force between the die-cut roller 6 and the backup roller 7 is reduced to the pressure contact force that allows the die-cut roller 6 and the backup roller 7 to pass through the roll label 2 without being cut out. The label L passes between the die-cut roller 6 and the backup roller 7 without being cut out.

When the cutout of one label L is interrupted in this way, the first electromagnetically biasing valve 42 is illustrated again, and the second electromagnetically biasing valve 49 is demagnetized to cause a large fluid in the pressure chamber 46. The pressure is introduced, and the label L having a required shape is cut out from the roll label 2.

As described above, in this embodiment, only by lowering the pressure introduced into the pressure chamber 46, the cutting of the label L having the required shape from the roll label 2 is interrupted without separating the die cutting roller 6 and the backup roller 7. Therefore, the interruption and resumption can be performed very instantaneously as compared with the case where the die cutting roller 6 and the backup roller 7 are separated from each other to interrupt the cutting.
Furthermore, as compared with the case where the die-cut roller 6 is separated from the roll label 2 and comes into contact with the roll label 2 again, it is possible to prevent the cutting blade of the die-cut roller 6 from being damaged.

Further, when the roll label 2 is set between the die-cut roller 6 and the backup roller 7 while the roll label operation is stopped, the first electromagnetic energizing valve 42 and the second electromagnetic energizing valve 42 are provided. It suffices to demagnetize the energizing valve 49 and excite the electromagnetic isolation valve 45. In this case, the pressure fluid from the pressure source 41 is introduced into the pressure chamber 44, and the pressure in the pressure chamber 46 is discharged to the outside from the first electromagnetic bias valve 42 or the second electromagnetic bias valve 49. , Above swing arm
35 is separated from the screw stopper 38, and the backup roller 7 is separated from the die cut roller 6.

In the roll labeler, when the preceding roll label is consumed, the leading end of the new roll label is connected to the end of the roll label, so that the connection portion is the die-cut roller 6 and the backup roller 7. The cutout in that part can be interrupted even when it is supplied in between.

Further, it goes without saying that the positions of the die cut roller 6 and the backup roller 7 may be reversed.

On the other hand, as another embodiment of the pressure contact force lowering means 48, the second electromagnetic urging valve 49 may be omitted and a low pressure may be constantly introduced into the pressure chamber 46, or the low pressure may be introduced into the pressure chamber 46. A pressure control valve 50 that accommodates a spring having a biasing force equivalent to low pressure
May be omitted. Alternatively, a high pressure may be constantly introduced to the pressure chamber 46 side, and the pressure on the pressure chamber 44 side may be controlled by pressure control to obtain a pressure relationship equivalent to the above.

Further, the high-pressure cylinder device and the low-pressure cylinder device are arranged in parallel and connected to the swing arm 35, and during normal operation, high pressure is supplied to the high-pressure cylinder device to obtain a large pressure contact force, while low pressure A low pressure may be constantly supplied to the working cylinder device, and the supply to the high pressure cylinder device may be stopped when cutting is interrupted. The high-pressure cylinder device and the low-pressure cylinder device are arranged at opposite positions so that high pressure is supplied only to the high-pressure cylinder device during normal operation to obtain a large pressure contact force. A low pressure may be supplied to reduce the pressure contact force.

In short, the pressure contact force lowering means 48 may have any structure as long as it can lower the pressure contact force between the die-cut roller 6 and the backup roller 7 as compared with the normal operation.

[Advantages of the Invention] As described above, in the present invention, since the die-cut roller and the backup roller are not separated from each other and the press contact force is simply reduced to interrupt the cutting of the object to be cut,
The responsiveness of the interruption can be remarkably improved as compared with the conventional one, and therefore, there is an effect that the processing speed of the entire apparatus is not lowered and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG.
FIG. 3 is a schematic plan view of a roll labeler incorporating the device of the present invention shown in FIG. 1 and a fluid circuit diagram including a partial sectional plan view of the figure. 2 …… Roll labeler (cutting object) 5 …… Rotary cutting device 6 …… Die cutting roller 7 …… Backup roller 10 …… Container 33 …… Adjusting screw 37 …… Cylinder device 38 …… Screw stopper 41 …… Pressure source 42 …… First electromagnetic bias valve 44,46 …… Pressure chamber 45 …… Electromagnetic isolation valve 48 …… Pressure contact force reduction means 49 …… Second electromagnetic bias valve 50 …… Pressure control valve

Claims (1)

[Claims] 1. A die-cut roller and a backup roller, each of which is rotatably supported, and a press-contact means for pressing the die-cut roller and the backup roller against each other, and between the die-cut roller and the backup roller pressed against each other. In a rotary cutting device in which an object to be cut is passed through and a die-cut roller cuts the object to be cut into a desired shape, the press-contacting means is composed of one or more cylinder devices and is connected to the cylinder device. By controlling the supply of the pressure fluid, a large pressure contact force between the die-cut roller and the backup roller, a large pressure contact force capable of cutting an object to be cut into a desired shape by the die-cut roller, and the die-cut roller and the backup roller. Keeps in contact with the object to be cut and allows it to pass without being cut out. A cutout interruption device in a rotary cutout device, characterized in that a pressure fluid supply circuit for changing the pressure contact force is provided.