JPH0230493A - Slitter - Google Patents

Abstract

PURPOSE:To reduce the cost of positioning device of an upper and lower blades by screwing the cutting tool stand for an upper blade and that for a lower blade to respective 1st, 2nd thread shaft, the respective thread shaft are linked via a power transmitting means and providing a single motor of rotating these thread shafts. CONSTITUTION:A single motor 78 is driven, one part of thread shafts 72 is rotated and the other part of thread shafts 74 is rotated via a power transmission means 75. The 1st, 2nd cutting tool stands 60, 68 screwed with these thread shafts 72, 74 are moved, the peripheral edges of the upper blade 58 and lower blade 66 freely rotatably supported on these cutting tool stands 60, 68 are joined and a web is cut by these upper/lower blades 58, 66. Consequently, the cost of the control device of the upper/lower blades 58, 66 can be reduced.

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a slitter that divides a wide web into a plurality of narrow widths, and has a frame with slick upper and lower blades that move in the width direction of the web. The present invention relates to a slitter that can change the dividing width size of a web.

[Conventional technology]

Conventionally, in a slitter, the rotation of a screw shaft screwed into a tool rest of a lower blade is controlled by NC to move this tool rest in the direction of the screw shaft, thereby moving the lower blade to a web cutting position. Next, the upper blade's turret was moved manually to bring the upper blade into contact with the lower blade, and then both blades were rotated to divide the web into multiple narrow widths.

However, this method has poor productivity because the upper blade is moved manually, and in order to improve this, a slick has been developed in which the movement of the upper blade can be controlled by NC in the same way as the lower blade. Furthermore, in Japanese Patent Application Laid-Open No. 61-142097, position detectors are provided in the upper blade turret and the lower blade turret,
A method is disclosed in which a pulse signal output from a position detector is fed back to a control device, a signal is output from the control device based on the pulse signal, and each tool post is moved to a predetermined position.

[Problem that the invention seeks to solve]

However, an NC control device or JP-A-61-1.42097
When using the foot bank control device described in the publication,
The drawback is that the control device has a complicated configuration and the cost of the device is high. Further, since the NC control device mainly includes a servo motor built into each tool post, there is a drawback that it is difficult to design the tool post compactly.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a slick that can reduce the cost of a positioning device for upper and lower blades, and also make the device more compact.

[Means for solving problems]

In order to achieve the above object, the present invention has a first screw shaft screwed into a first tool rest that rotatably supports an upper blade, and a second tool rest that rotatably supports a lower blade. , by screwing together the second A and J shafts and rotating the first screw shaft and the second screw shaft, the first tool rest and the second tool rest are moved synchronously, and a predetermined position is moved. In the slick that cuts the web by joining the peripheral edges of the upper blade and the lower blade at the position, the first screw shaft and the second screw shaft are connected via a power transmission means, and one motor is used to connect the first screw shaft and the second screw shaft. It is characterized in that the first and second tool rests are moved by rotating the first screw shaft and the second screw shaft.

[Effect]

According to the present invention, since the first screw shaft and the second screw shaft are connected, simply by rotating either one of the screw shafts, the upper blade and the lower blade can be raised while maintaining an equal distance. It can be moved in the width direction of the blade.

Therefore, it is possible to reduce the cost of the control device for the upper blade and the lower blade.

〔Example〕

Preferred embodiments of the slitter according to the present invention will be described in detail below with reference to the accompanying drawings.

The slick 50 shown in FIG. 1 mainly includes an upper blade slitter unit 52, a lower blade slitter unit 54, and a moving mechanism 5.
It consists of 6.

The upper blade slitter unit 52 includes an upper blade 58, a first tool rest 60, a drive shaft 62, a support member 64, etc.
is rotatably supported by the first tool rest 6o. A drive shaft 62 is rotatably mounted on the first tool rest 6o, and
Supported in a slidable manner. This drive shaft 62 is mechanically connected to the upper blade 58 via a power transmission means (not shown) provided inside the first tool rest 6o, and is further connected to a motor (not shown). Further, a support member 64 is rotatably attached to the tool rest 62 via a drive shaft 62, and the support member 64 is slidably supported by a second rule of the main body (not shown).

Therefore, the first tool rest 6o is rotated about the drive shaft 62 (this rotation is performed by an actuator not shown).

The lower blade slitter unit 54 includes a lower blade 66, a second tool rest 68, a drive shaft 70, etc., and the lower blade 66 is rotatably supported by the second tool rest 68. Second tool rest 68
A drive shaft 7o is rotatably and slidably supported. This drive shaft 70 is mechanically connected to the lower blade 66 via a power transmission mechanism (not shown) provided inside the second tool rest 68, and is further connected to a motor (not shown). Further, the second tool rest 68 is slidably supported by a second rail of the main body (not shown).

The moving mechanism 56 includes a first screw shaft 72 and a second screw shaft 74.
, power transmission means 75, etc., and the power transmission means 75 is
It is composed of a belt 76, a motor 78, etc. The first screw shaft 72 is screwed into the support member 64 , and a drive shaft of a motor 78 is connected to the end thereof.
A pulley 72A is fixed to the. Further, a block 84 is screwed onto the first screw shaft 72.
A contact pressure cylinder 84A is fixed to. The end of the rod portion 84B of the contact pressure cylinder 84A is attached to the support member 64. The second screw shaft 74 is connected to the second tool rest 6
8, and a gear 74Δ is fixed to its end. A gear 80 is meshed with the gear 74A, a boo IJ 80 B is fixed to the shaft 80B of the gear 80, and a rotating shaft of a rotary encoder 82 is attached (-1). A belt 76 is stretched around the pulley 80B.

The operation of the slick according to the present invention constructed as described above will be explained.

First, the position of the lower blade 66 is set using a high-speed counter (not shown), and the rond portion 84B of the contact pressure cylinder 84Δ is contracted to release the upper blade 58 from the contact pressure state with the lower blade 6B. next,
The fixation of the first tool rest 60 is released and the upper blade 5 is rotated upward (the actuator for rotating it is not shown).
8 and the lower blade 66 are released from the wrapped state. In this state, when the motor 78 is operated to rotate the screw shaft 72, the gear 80 is rotated via the belt 76, and the I/J axis 74 is rotated via the gear 74A meshing with the gear 80. Ru. As a result, the first tool rest 60, the second tool rest 68, and the book 84 move in the axial direction of the screw shaft while maintaining equal intervals from each other. This amount of movement is detected by the low-return encoder 82, and when the set position of the high speed counter is reached, the rotation of the motor 78 is stopped by the counter. Next, the first tool rest 60 is rotated downward to bring the upper blade 58 and the lower blade 66 into a lap state, and the rond part 84B of the contact pressure cylinder 84 is extended to move the upper blade 58 in the direction of the lower blade 66. The ramp portion of the upper blade 58 and lower blade 66 is pressed to a state where the web can be cut. next,
A motor (not shown) is rotated to rotate the upper blade 58 and the lower blade 66 via the drive shaft 62.70. As a result, the web can be cut into any narrow width.

FIG. 2 shows a slitter 100 in which the configuration of the moving mechanism 56 of the previous embodiment is changed. Slitter 1 based on Figure 2 below.
The configuration of 00 will be explained. Incidentally, the same members as those in the above embodiment are given the same reference numerals, and the explanation thereof will be omitted.

Support member 64 of upper blade slinter unit 52 and block 8
4 refers to the second tool rest 6 of the lower blade slitter unit 54, which is slidably supported on the second rail 102B of the main body 102.
8 is slidably supported on the second rail 102B of the main body 102. Further, the drive shaft 62, the drive shaft 70, the screw shaft 72, and the screw shaft 74 are rotatably supported by the main body 102.

In FIG. 2, at the left end of the drive shaft 62 and drive shaft 70,
Pulleys 105.106 are installed via bearings 104.104. Power is supplied to the pulleys 105, 106 via a belt from a motor (not shown). The motor 78 is fixed to the main body 102, and its rotation axis is
It is connected to the shaft 114 via gears 106, 108, 110, and 112. The shaft 114 is also connected to the threaded shaft 72 via gears 116, 118. On the other hand, in FIG. 2, there is a boo U 120 fixed to the left end of the shaft 114 and a pulley 122 above it.
A first belt 124 is stretched over the pulley 122, and a second belt 130 is stretched around a pulley 126 coaxial with the pulley 122 and a pulley 128 above the pulley 126. Therefore, the drive shaft of motor 78 is mechanically coupled to threaded shaft 72 and threaded shaft 74. Note that the shaft of the rotary encoder 82 is connected to the screw shaft 74.

The slitter 100 configured in this way has a motor 7
8, the slick 50 shown in FIG.
Similarly, the upper blade slitter unit 52 and the lower blade slick unit 54 can be moved. Further, the upper blade 58 and the lower blade 66 can be rotated by driving the pulleys 105 and 106 from an external motor.

Although the above embodiment has been described with reference to one set of tool rests, the present invention is not limited to this, and can be applied to cases where there are two or more sets of tool rests by arranging the screw shafts in parallel. In this case, by providing a contact pressure release device on the upper blade turret and the lower blade turret, the number of slits can be changed and the combination of slits can be freely selected. It is possible to create a size change slitter with a high degree of freedom.

〔Effect of the invention〕

As explained above, according to the slitter according to the present invention, the control device for the upper blade and the lower blade can be simplified.
It is possible to reduce the cost of the control device.

In addition, in the conventional system, it was necessary to incorporate one servo motor or a rotation detector and a clutch in each tool post, but the tool post of the present invention can be simply screwed onto the screw shaft. Therefore, since the motor and the movement detector can be mounted outside the turret, the control device can be made more compact, and maintainability is also improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a slitter according to the present invention, and FIG. 2 is a plan view of another embodiment of the slitter according to the present invention. 50.100... Slitter, 56... Moving mechanism,
58...Upper blade, 60.68...Turret, 66
... lower blade, 75 ... power transmission means, 78.
・Rotary drive source.

Claims (1)

[Claims] a first screw shaft is screwed into a first tool rest that rotatably supports an upper blade; a second screw shaft is screwed into a second tool rest that rotatably supports a lower blade; By rotating the first screw shaft and the second screw shaft, the first tool rest and the second tool rest are moved synchronously, and the peripheral edges of the upper and lower blades are joined at a predetermined position. In a slitter that cuts a web by cutting a web, a first screw shaft and a second screw shaft are connected via a power transmission means, and a single motor is used to connect the first screw shaft and the second screw shaft. A slitter characterized in that the first and second tool rests are moved by rotation.