JP2832253B2 - Slitter width setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a slitter for adjusting the position of a cutting blade in a slitter for continuously slitting a web of paper, plastic film, or the like in the bus direction with a cutting blade. It relates to a width setting device.

[Prior Art] Conventionally, a slitter is provided on a gantry so that a first and a second moving unit can move in parallel with each other in a direction orthogonal to the web path direction, and a slitter is provided on each of the first and the second moving units. A first and a second pair of cutting blades mounted,
The web is configured to be slit by the first and second cutting blades.

In the conventional slitter, when the width of the web is changed, the first and second moving units are moved in a direction orthogonal to the web path direction, and the cutting blade on each moving unit is moved to the current time. The setting is changed to the slit position.

Here, the conventional slitter enables the stationary electromagnet provided in each of the first and second moving units to be attracted to the stationary plate, and the movable electromagnet provided to each moving unit to be attracted to the movable plate. . Then, when changing the setting of the cutting blade position, the stationary electromagnet is released and the suction electromagnet is released.
By attracting the moving electromagnet to the movable plate and moving the movable plate, the movable plate and the corresponding moving unit are integrally moved in a required direction, and the attracting mode of the stationary and moving electromagnets is changed. By instantaneously switching, the moving unit is positioned at a predetermined position without stopping the movement of the movable plate.

[Problems to be Solved by the Invention] However, the prior art has the following problems.

An electromagnet is used to stop and move the mobile unit. For this reason, in an environment where there is a lot of dust generated due to slits such as paper dust, the attraction force is reduced, and it is difficult to change the setting of the cutting blade position with high accuracy.

The movable plate is moved only by an axial force applied by a driving device provided on one end side. Therefore, for example, when the movable plate moves rightward, a tensile force acts on the movable plate, and when the movable plate moves leftward, a compressive force acts on the movable plate. This is unreasonable in that it means that the movable plate on which the compressive force acts when leftwardly bends and the moving unit cannot be accurately controlled.

The control device that controls the movement of the mobile unit recognizes the home position of the mobile unit only by detecting the unit body with the home setting switch. For this reason, when the relative position changes between a new knife edge of the cutting blade and the unit main body when the cutting blade is worn or replaced, the setting of the cutting blade position cannot be changed with high accuracy.

An object of the present invention is to adjust the position of a moving unit having a cutting blade with high accuracy and change the setting of the cutting blade position with high accuracy.

[Means for Solving the Problems] According to the present invention as set forth in claim 1, the first and second moving units are provided on a gantry so as to be able to move parallel to each other in a direction orthogonal to the web path direction. A first moving unit, wherein the first and second pair of cutting blades are mounted on each of the two moving units and the web is slit by the first and second cutting blades; The first stationary bar and the first movable bar are extended in a direction along the moving direction of the first movable unit, and the lock cylinder for stopping provided on the first movable unit is lockable to the first stationary bar, and is provided on the first movable unit. A lock cylinder for movement is lockable to the first movable bar, and a second stationary bar and a second movable bar are extended in a direction along a moving direction of the second movable unit, and a stationary member provided on the second movable unit is provided. For lock The binder can be locked to the second stationary bar, the lock cylinder for movement provided in the second moving unit can be locked to the second movable bar, and the first and second movable bars can be locked to the first and second movable bars. A driving device for driving the moving units in the moving direction, an origin setting switch for determining an origin position of each moving unit in a direction along a moving direction of the first and second moving units on the gantry, and each moving unit A scale device for detecting the current position of the first and second moving units, and a control device for controlling each of the stationary and moving lock cylinders and the first and second movable bar driving devices provided in the first and second moving units. Device, wherein the control device comprises a first and a second in the travel mode.
Unlock each of the lock cylinders for stopping, first and second
Is locked to the first and second movable bars, and the driving device of each movable bar is operated, so that each movable bar and each corresponding moving unit are integrally required. In the stationary mode, the driving devices of the first and second movable bars are stopped,
And the first and second stationary lock cylinders are connected to the first and second lock cylinders.
Are configured to be locked to each of the stationary bars.

The present invention described in claim 2 is the first invention according to claim 1.
And a second driving device for each movable bar has a main driving device for applying axial force to one end of each movable bar, and an auxiliary driving device for applying axial force to the other end of each movable bar, The movable bar is moved in a required direction while applying a tensile force to each movable bar in cooperation with the main drive unit and the auxiliary drive unit.

According to a third aspect of the present invention, in the first or second aspect, the origin setting switch for at least one of the first and second moving units detects a knife edge of a cutting edge provided in the moving unit. It is designed to work with.

[Operation] According to the present invention described in claim 1, the following operation is provided.

A lock cylinder is used for stopping and moving the mobile unit. The lock cylinder mechanically engages with the corresponding stationary or movable bar to lock strongly. For this reason, even in an environment where there is a lot of dust generated due to slits such as paper dust, the cutting blade position can be set with high accuracy without lowering the locking force.

According to the second aspect of the present invention, the following operations are provided.

The movable bar is moved in cooperation with a main drive provided on one end and an auxiliary drive provided on the other end. At this time,
Since the main drive device and the auxiliary drive device cooperate to always apply a tensile force to the movable bar, there is no possibility that the movable bar is bent and deformed, and the movement of the movable unit can be controlled accurately.

According to the third aspect of the present invention, the following operations are provided.

The control device for controlling the movement of the moving unit detects the knife edge of the cutting edge of the moving unit,
The latest and proper origin position of the mobile unit can always be recognized. That is, since the origin setting switch for at least one of the first and second moving units operates to detect the knife edge of the cutting edge provided in the moving unit, for example, an accidental power failure or artificial movement However, by returning the knife edge position to the origin setting switch, it is possible to easily recognize the memory of the origin again. In addition, in the case of polishing due to wear of the cutting blade during use and replacement with a new cutting blade, the origin is found by actual measurement by a measure or the like as a conventional technique, but such complicated work is omitted in the present invention. Therefore, moving the knife edge position to the origin setting switch and making the new knife edge sensitive only allows the control device to calculate the relative difference from the previously stored origin position. Settings can be changed with high accuracy.

Embodiment FIG. 1 is a front view showing a slitter line to which the present invention is applied, FIG. 2 is a front view showing a slitter according to one embodiment of the present invention, FIG. 3 is a plan view of FIG. 4 is a side view of FIG. 2, FIG. 5 is a front view showing the moving unit, FIG. 6 is a plan view of a main part of FIG. 5, FIG. 7 is a side view of FIG. 5, and FIG. 9 is a cross-sectional view of FIG. 8, FIG. 10 is a plan view of FIG. 8, FIG. 11 is a block diagram showing a control system, and FIG. 12 is another block diagram of the present invention. FIG. 13 is a front view showing the slitter according to the embodiment, FIG. 13 is a plan view of FIG. 12, and FIG.
FIG. 12 is a side view, and FIG. 15 is a schematic view showing a slitter according to still another embodiment of the present invention.

In the case of manufacturing a narrow-width web as a product from a large-diameter base paper, the slitter line winds a large-diameter base paper sheet from a rewind roll 1 to a take-up roll 2 as shown in FIG.
The sheet is slit by a slitter 10 provided between the two rolls 1 and 2 to obtain a small-width web. And slitter 10
Is provided with a width setting device 11 as follows to adjust the slit position according to the width of the sheet this time. In FIG. 1, reference numerals 3 and 4 denote winding drums, and reference numeral 5 denotes a guide roller.

That is, as shown in FIGS. 2 to 7, the slitter 10 can move the first and second moving units 12A and 12B parallel to each other in a direction orthogonal to the web path direction.
First and second paired cutting blades 14A (rotating blades) and 14B (receiving blades) provided on the upper and lower units, respectively.
And slit the sheet with both cutting blades 14A and 14B.

The slitter 10 includes a plurality of sets of moving units 12A and 12B in a direction orthogonal to the sheet path direction, and enables the sheet to be slit in multiple rows by the cutting blades 14A and 14B.

At this time, the gantry 13 is configured by connecting the first and second main beams 15A and 15B with the connecting member 16, and the first main beam
The first moving unit 12A is supported above 15A, and the second moving unit 12B is supported above the second main beam 15B.
As shown in FIG. 5, each of the main beams 15A and 15B includes a linear rail 17 extending in a direction orthogonal to the sheet path direction.
A mounting plate 19 of each of the moving units 12A and 12B is mounted on the linear rail 17 via a linear bearing 18. The cutting blade motor 20A of the cutting blade 14A is mounted on the mounting plate 19 of the first moving unit 12A, and the mounting plate of the second moving unit 12B is mounted.
A cutting blade holder 20B for the cutting blade 14B is attached to 19.

However, the width setting device 11 of the slitter 10 is configured as follows.

First, on the side of the first main beam 15A, the first stationary bar 21A and the first movable bar 22A are extended in the direction along the direction of movement of the first mobile unit 12A, and the stationary bar provided on the first mobile unit 12A is provided. The lock cylinder 23A is lockable to the first stationary bar 21A, and the lock cylinder 24A provided to the first moving unit 12A is lockable to the first movable bar 22A.

On the side of the second main beam 15B, the second stationary bar 21B and the second movable bar 22B are extended in the direction along the moving direction of the second moving unit 12B, and the stationary bar 21B is provided on the second moving unit 12B. The lock cylinder 23B can be locked to the second stationary bar 21B, and the lock cylinder 24B for movement provided in the second moving unit 12B can be locked to the second movable bar 22B.

Further, the width setting device 11 includes first and second movable bars 22.
A main drive device 25 and an auxiliary drive device 26 are provided as drive devices for driving A and 22B in the moving directions of the first and second moving units 12A and 12B. At this time, both movable bars 22A, 22B
Are connected by connecting plates 27 and 28, respectively, and can be simultaneously moved by driving devices 25 and 26.

Here, the two driving devices 25 and 26 include servo motors 31 and 32 fixed to the connecting member 16, ball screws 35 and 36 connected to the servo motors 31 and 32 via couplings 33 and 34, and the connecting member 16. Bearing box 3 that is incorporated in and supports ball screws 35 and 36
7, 38, incorporated in connecting plates 27, 28 and ball screw 3
It is composed of ball nuts 39 and 40 into which the screws 5 and 36 are screwed.

The main drive device 25 applies an axial force to one end of each of the movable bars 22A and 22B by the operation of the servo motor 31.
In addition, the auxiliary driving device 26 is operated by the servo motor 32 to
An axial force is applied to each of the movable bars 22A and 22B and the other end. At this time, the main drive device 25 and the auxiliary drive device 26 cooperate with each other to move the movable bars 22A, 22B in the required direction while applying a tensile force to the movable bars 22A, 22B. For example, in FIG. 3, when the mobile units 12A and 12B are to be moved to the right, the main drive unit 25 located on the right side is required.
Is the combined force of the rightward axial force applied to each movable bar 22A, 22B and the leftward or rightward axial force applied to the movable bar 22A, 22B by the auxiliary drive device 26 located on the left side,
The magnitude and direction of the axial force exerted on the movable bars 22A and 22B by the driving devices 25 and 26 are controlled so that the rightward pulling force is applied to A and 22B.

Further, the width setting device 11 is provided with an origin setting switch for determining the origin position of each of the moving units 12A, 12B in the direction along the moving direction of the first and second moving units 12A, 12B on the main beams 15A, 15B. 41A, 41B and each mobile unit 12
Magnetic scale units 42A and 42B that detect the current position of A and 12B
Is provided.

The above-mentioned origin setting switches 41A and 41B are constituted by magnetic proximity switches.

Further, as shown in FIG. 5, the magnetic scale devices 42A and 42B are provided with a detection head 44 supported by a bracket 43 fixed to the mounting plate 19 of each of the moving units 12A and 12B. You can read the current position of 12B directly.

At this time, the origin setting switch 41A for the first moving unit 12A is configured to operate by detecting the knife edge of the cutting blade 14A provided in the moving unit 12A. The origin setting switch 41B for the second mobile unit 12B is configured to operate by detecting the unit body of the mobile unit 12B.

Further, the width setting device 11 has a control device 45 constituted by a microcomputer. The control device 45 is connected to the eleventh
As shown in the figure, a main drive as a driving device for the stationary lock cylinders 23A and 23B, the movable lock cylinders 24A and 24B, and the movable bars 22A and 22B provided in the first and second movable units 12A and 12B. The device 25 and the auxiliary drive device 26 are controlled.

That is, in the moving mode, the control device 45 unlocks the first and second locking lock cylinders 23A and 23B, and moves the first and second moving lock cylinders 24A and 24B to the first and second lock cylinders. 2 and lock the movable bars 22A and 22B, and operate the driving devices 25 and 26 for the movable bars 22A and 22B, respectively, so that the movable bars 22A and 22B and the corresponding moving units 12A and 12B corresponding thereto. Are moved together in the required direction in the required amount. In the stop mode, the control device 45 stops the driving devices 25 and 26 for the first and second movable bars 22A and 22B, and controls the first and second stop lock cylinders 23.
A and 23B are locked to the first and second stationary bars 21A and 21B, respectively.

The lock cylinders 23A, 23B, 24A and 24B are
It is configured as shown in FIGS. That is, for example, the stationary lock cylinder 23A corresponding to the first stationary bar 21A is
A lever 52 swinging around a support shaft 51; a shoe 53 provided at the distal end of the lever 52 and capable of engaging with the outer peripheral surface of the stationary bar 21A in a press-contact state; and a roller provided at the base end of the lever 52
54 and a piston 55 with a tapered metal fitting that engages the roller 54
A spring 56 pressing the piston 55 toward the roller 54,
An air intake 57 is provided for taking in compressed air and moving the piston 55 away from the roller 54. Accordingly, when compressed air is introduced into the air inlet 57, the piston 55 moves in a direction away from the roller 54, and the shoe 53 of the lever 52 opens so as to be away from the outer peripheral surface of the first stationary bar 21A, so that the lock is released. . When the compressed air is released from the air inlet 57, the piston 55 is moved toward the roller 54 by the spring 56, and the shoe 53 of the lever 52 is closed so as to press against the outer peripheral surface of the first stationary bar 21A, and the locked state is established. Becomes

The width setting device 11 of the slitter 10 operates as follows.

(1) When the current width is set in the setting device 46 of the control device 45, the control device 45 storing the current position of the cutting blades 14A and 14B provided in each of the moving units 12A and 12B is used as the cutting device 14A. , 14B to correspond to the above-mentioned width, each moving unit 12A, 12B
Calculate the moving direction and the moving amount to be given to.

(2) Based on the calculation result of the above (1), the control device 45
The mobile units 12A and 12B are moved in the above-described movement mode, and thereafter, the mobile units 12A and 12B are moved in the stop mode described above.
A and 12B are stopped at the positioning position.

At this time, the moving amount of each moving unit 12A, 12B in one stroke is limited to, for example, 100 mm at the maximum. For this reason, when giving the moving unit 12A, 12B an amount of movement exceeding the above-described one stroke, the locking and unlocking of the locking lock cylinders 23A, 23B and the moving lock cylinders 24A, 24B are repeated, and By repeating the normal rotation and the reverse rotation of each of the servo motors 31 and 32 of 25 and 26, both the moving units 12A and 12B can be moved without limit until reaching the predetermined position.

 Next, the operation of the above embodiment will be described.

For stopping and moving the moving units 12A and 12B, the locking lock cylinders 23A and 23B and the moving lock cylinders 24A and 24A are used.
4B is used. The lock cylinder mechanically engages with the corresponding stationary bar 21A, 21B or movable bar 22A, 22B to lock strongly. Therefore, the position of the cutting blades 14A and 14B can be changed with high accuracy without lowering the locking force even in an environment where there is a lot of dust generated by slits such as paper dust.

The movable bars 22A and 22B are moved under the cooperation of a main drive device 25 provided at one end and an auxiliary drive device 26 provided at the other end. At this time, since the main drive device 25 and the auxiliary drive device 26 cooperate to always apply a tensile force to the movable bars 22A, 22B, there is no possibility that the movable bars 22A, 22B are bent and deformed. The movement of the units 12A and 12B can be controlled accurately.

The control device 45 that controls the movement of the moving unit 12A recognizes the origin position of the moving unit 12A by detecting the knife edge of the cutting edge 14A included in the moving unit 12A. That is, the origin setting switch 41A for the moving unit 12A is provided with the cutting blade 14 of the moving unit 12A.
Since it operates by detecting the knife edge of A, the memory of the origin can be easily re-recognized by returning the knife edge position to the origin setting switch 41A even if there is an unexpected power failure or artificial movement, for example. It is possible to be impatient. In addition, when the polishing is performed by abrasion of the cutting edge 14A during use, and when replacing the cutting edge with a new cutting edge, the origin is found by actual measurement using a measure or the like as a conventional technique. In order to omit this, the knife edge position is shifted to the origin setting switch 41A and the controller 45 calculates the relative difference from the previously stored origin position only by sensing the new knife edge. Can be changed easily and with high accuracy.

Further, since the lock cylinder is used for stopping and moving the moving units 12A and 12B, the magnetic scale devices 42A and 4B are used.
Electromagnetic disturbance is not applied to 2B, and the detection accuracy of the magnetic scale devices 42A and 42B can be maintained.

According to the above-described embodiment, as a method for further strengthening measures against dust such as paper dust, the stationary bars 21A and 21B and the movable
A and 22B are made of high-tensile steel, quenched and polished, and further plated with chrome to eliminate the adhesion of dust.The space between adjacent moving units 12A and 12B is shielded by a square telescope shield plate, and blower blowing is performed. The shielded space is filled with the compressed air thus produced, so that intrusion of dust can be eliminated.

The difference between the embodiment shown in FIGS.
Single bar drive for movable bar 22A, 22B
It consists of only 61. The driving device 61 has substantially the same configuration as the main driving device 25 described above. In addition, each movable bar
The connection plates 27 and 28 of 22A and 22B are connected by a connection beam 62. The connecting beam 62 is supported on a linear rail (not shown) fixed to the gantry 13 via a linear bearing.

In the embodiment of the present invention, the movable bars 22A and 22B may be independent of each other without being connected by the connecting plates 27 and 28, and an independent driving device may be provided for each of the movable bars 22A and 22B. At this time, a main drive device and an auxiliary drive device can be provided for each of the movable bars 22A and 22B.

The embodiment of FIG. 15 differs from the above embodiment in that hydraulic positioning cylinders 71 and 72 are used as a main drive device 25 and an auxiliary drive device 26 for each movable bar 22A and 22B. As the cylinders 71 and 72, for example, an intelligent cylinder ENV series (trade name) manufactured by Horiuchi Kikai can be used.

[Effects of the Invention] As described above, according to the present invention, it is possible to adjust the position of a moving unit including a cutting blade with high precision and change the setting of the cutting blade position with high precision.

[Brief description of the drawings]

FIG. 1 is a front view showing a slitter line to which the present invention is applied, FIG. 2 is a front view showing a slitter according to one embodiment of the present invention, FIG. 3 is a plan view of FIG. 2, and FIG. FIG. 2 is a side view of FIG. 2, FIG. 5 is a front view showing the moving unit, and FIG.
7 is a side view of FIG. 5, FIG. 8 is a sectional view showing a lock cylinder, FIG. 9 is a transverse sectional view of FIG. 8, and FIG. 10 is a plan view of FIG. FIG. 11, FIG. 11 is a block diagram showing a control system, FIG. 12 is a front view showing a slitter according to another embodiment of the present invention, FIG. 13 is a plan view of FIG. 12, and FIG.
FIG. 12 is a side view, and FIG. 15 is a schematic view showing a slitter according to still another embodiment of the present invention. 10… Slitting machine, 11… Width setting device, 12A, 12B… Moving unit, 14A, 14B …… Cutting blade, 21A, 21B …… Standing bar, 22A, 22B …… Movable bar, 23A, 23B …… Lock cylinder for stopping, 24A, 24B… Lock cylinder for movement, 25… Main drive device, 26 …… Auxiliary drive device, 41A, 41B …… Origin setting switch, 42A, 42B …… Magnetic scale device, 45 …… Control device, 61 ... Drive device, 71, 72 ... Positioning cylinder (drive device).

Claims (3)

(57) [Claims] A first and a second moving unit are provided on a gantry so as to be able to move in parallel with each other in a direction orthogonal to the web path direction, and a first and a second moving unit are respectively mounted on the first and the second moving units. In a slitter width setting device equipped with a pair of cutting blades and slitting a web by first and second cutting blades, a first stationary bar and a first stationary bar are arranged in a direction along a moving direction of a first moving unit. A movable bar is extended, and a stationary lock cylinder provided in the first moving unit is lockable to the first stationary bar, and a movable lock cylinder provided in the first moving unit is lockable to the first movable bar. And a second stationary bar and a second movable bar are extended in a direction along a moving direction of the second mobile unit, and a lock cylinder for stopping provided in the second mobile unit can be locked to the second stationary bar, The moving lock cylinder provided in the second mobile unit is lockable relative to the second movable bar, the first
And a driving device for driving each of the second movable bars in the moving directions of the first and second moving units, and in a direction along the moving direction of each of the first and second moving units on the gantry,
An origin setting switch that determines the origin position of each mobile unit,
And a scale device for detecting the current position of each moving unit, and further a driving device for each of the stationary and moving lock cylinders and the first and second movable bars provided in the first and second moving units. Has a control device for controlling, the control device,
In the movement mode, the first and second stationary lock cylinders are unlocked, the first and second movable lock cylinders are locked to the first and second movable bars, and each movable lock cylinder is locked. By operating the driving device of the bar, each movable bar and each moving unit corresponding to the movable bar are integrally moved in a required direction by a required amount. In the stop mode, the driving devices of the first and second movable bars are moved. And the first and second stationary lock cylinders are locked to the first and second stationary bars, respectively. 2. A driving device for a first and a second movable bar according to claim 1, wherein a driving device for applying an axial force to one end of each of the movable bars, and a shaft driving device for applying an axial force to the other end of each of the movable bars. A slitter width setting device having an auxiliary drive device for applying a force, and moving the movable bar in a required direction while applying a tensile force to each movable bar in cooperation with the main drive device and the auxiliary drive device. 3. An apparatus according to claim 1, wherein the origin setting switch for at least one of the first and second moving units is activated by detecting a knife edge of a cutting edge provided in the moving unit. Is a slitter width setting device.