JPS6250276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slitter machine for cutting wide roll paper or other sheet materials into narrow widths, and relates to a device for moving and fixing a cutting blade to a desired position.

Slitter machines, especially those that cut paper, resin films, etc., have a receiving blade in which a large number of blades are arranged at regular intervals without gaps, and a blade that moves on a shaft and is fixed at a position facing any receiving blade. As shown in Fig. 1, a wide roll-shaped material A is sequentially rewound and passed between the cutting blade 1 and the receiving blade 2 while being guided by rollers B and B to form a narrow material. There is one that is cut into pieces and then wound up again on a shaft C.

In such devices, when changing the cutting width of roll paper, etc., conventionally, the cutting blades had to be manually operated one by one, which was troublesome because there was a risk of injury from the sharp cutting blades.

In addition, some machines have a cutting blade attached to a movable stage that can be moved independently, but with such machines, the moving parts are large, making it difficult to maintain accuracy, and the size of the moving parts makes it difficult to maintain accuracy. Therefore, the arrangement of the cutting blades was restricted, and the cutting blades could not be arranged at narrow intervals.

In view of these points, the present invention mechanically performs the work of moving only a single cutting blade, which was previously done by hand, without impairing the functions of conventional machines, and allows it to be held firmly in the desired position. We devised a mobile device that can be fixed.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cutting blade moving device in a slitter machine according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view schematically showing the slitter machine of the present invention, and FIG. 2 is a front view schematically showing a cutting blade, a receiving blade, and a moving device for the cutting blade.

The cutting blade 1 is attached to a cutting blade holder 3, which is fixed at an arbitrary position on the cutting blade shaft 4. For example, as shown in FIG. 3, an eccentric groove 6 is carved on the inner circumferential surface of a cylindrical holder body 5 to which the cutting blade 1 is fixed and loosely fitted to the cutting blade shaft 4. A key 7 that can be fitted into the diameter portion is held on the cutting blade shaft 4. By rotating the holder body 5, the key 7 is bitten into the eccentric groove and can be fixed at any position on the cutting blade shaft. In FIG. 3, reference numeral 8 denotes a narrower groove within the eccentric groove 6, and a spring 9 that engages with the key 7 is positioned within this groove 8 to hold the key 7 on the cutting blade shaft 4. .

On the other hand, a large number of receiving blades 2 are arranged (for example, at intervals of 5 m/m) on a receiving blade shaft 10 fixed parallel to the cutting blade axis 4, and the cutting blade 1 can correspond to any receiving blade.

A cutting blade shaft 4 supporting the cutting blade 1 is supported by an arm 11, and the base end of this arm 11 is fixed to a swing shaft 12. Therefore, by rotating the swing shaft 12 with the swing motor 13, the cutting blade shaft 4
When looking down, the cutting blade 1 can be disengaged from the receiving blade 2 when moving the cutting blade 1. (Two-dot chain line in FIG. 2) In addition to these, a means for moving the cutting blade that moves parallel to the cutting blade axis 4 is provided.

This moving means is composed of a spline shaft 15 supported by arms 14, 14 at both ends and arranged parallel to the cutting blade axis, and a gripping device 17 that grips the feed screw 16 and the cutting blade holder 3. .

The gripping device 17 can be slid along the spline shaft 15, and can be raised and lowered by the motor 18 that rotates the spline shaft 15. The gripping device 17 is screwed onto a feed screw 16 rotated by a motor 19, and can be moved left and right.

The gripping device that grips the cutting blade holder can have any structure as long as it can grip the cutting blade holder so that it does not rotate. It can be provided with two gripping means for gripping both sides.

That is, the gripping device shown in FIG.
0, a pair of claws 22, 22 move in the axial direction of the spline shaft by a cylinder 21 and clamp both end surfaces of the cutting blade holder 3, and a pin 23 is fixed to the grip main body 20, and a cylinder 24 It is provided with a pair of claws 25, 25 which open and close vertically and hold the circumferential side of the cutting blade holder. Reference numeral 26 in the drawing indicates a guide shaft of the claw 22.

A gear 30 is loosely fitted to the swing shaft 12 at the left end in FIG. This gear 30 meshes with a gear 28 which is engaged with and disengaged from the cutting blade shaft 4 by a clutch 27, and rotates the cutting blade shaft 4, which is rotated in one direction by a cylinder 29, in a fixed direction. By rotating the cutting blade shaft 4, the cutting blade holder held by the gripping device 17 is released.

On the other hand, a clutch 3 is located at the right end of the swing shaft 12.
1 meshes with a gear 32 that is engaged with and disengaged from the cutting blade shaft 4, and a gear 34 that is rotated in the opposite direction by a cylinder 33 is loosely fitted.
This serves to tighten the cutting blade holder.

Next, the operation of the slitter machine having the above structure will be explained.

Under normal operating conditions, as shown in Figures 1 and 2 (solid lines), the material to be cut, such as a roll paper, passes between the cutting blade 1 and the receiving blade 2, and is cut into narrow pieces. ing.

When changing the cutting width of roll paper, etc., first, the swing shaft 12 is rotated by the swing motor 13 to raise the cutting blade shaft 4 supported by the arm 11 (see Fig. 1). 2), the cutting blade 1 and receiving blade 2 are disengaged.

At this time, the motor 19 of the feed screw 16 is driven to move the gripping device 17 to the position of the cutting blade holder 3 to be moved. [FIG. 5A] Then, the motor 18 of the spline shaft 15 is driven to lower the gripping device 17, which is located at the dotted line position in FIG. [FIG. 5B] Next, the cylinder 24 of the gripping device 17 is activated, and the claws 25, 25 grip the circumferential side of the cutting blade holder 3 and hold it so that it does not rotate. [5th
Figure C] In this state, actuate the clutch 27 to remove the cutting blade shaft 4.
When the gear 28 is connected to the cylinder 29 and the gear 30 is rotated, the cutting blade shaft 4 rotates, and the cutting blade holder 3 held by the claws 25, 25 of the gripping device 17 and the cutting blade holder 3 are rotated. A relative rotational movement occurs between the cutting blade axes, and the cutting blade holder is unfastened. [FIG. 5D] At this time, the cutting blade holder 3 can freely slide along the cutting blade axis.

Next, the grip between the claws 25 and 25 is released, and the cylinder 21 of the gripping device 17 is activated.
Both ends of the cutting blade holder 3 are held between the claws 22. [Fig. 5 E] When the cutting blade holder 3 is held between the claws 22 and the feed screw 16 is driven by the motor 19 to move the gripping device 17 to any desired position, the cutting blade holder 3 is held in place of the cutting blade. It slides on the shaft 4 and moves together with the gripping device 17. [FIG. 5] After the cutting blade holder 3 has been moved to the desired position, the claws 25 of the gripping device 17 are activated again by the cylinder 24 to firmly clamp the cutting blade holder 3 so that it does not rotate. [Figure 5 G] After that, actuate the clutch 31 and shift the gear 32.
and the cutting blade shaft 4, the cylinder 33 rotates the gear 34, and the cutting blade shaft 4 is rotated in the opposite direction to that in the case of [Fig. 5 D] through the gear 32 meshing with the gear 34. Then, tighten and fix the cutting blade holder onto the cutting blade shaft 4. [Figure 5 H] Once the cutting blade holder 3 has been tightened,
Release the clamping between the pawls 22 and 25, drive the motor 18 of the spline shaft 15 to raise the gripping device 17 (see Fig. 5), and drive the motor 19 of the feed screw 16 to move the gripping device 17 to the reference position. Bring it back. [Fig. 5 N] By repeating the above operations as many times as necessary for the cutting blades, the entire arrangement of the cutting blades is completed. When the arrangement of the cutting blade is completed, the swing motor 13 is driven to rotate the arm 11, and the cutting blade shaft 4 supported by the arm 11 is aligned with the cutting blade as shown by the solid line in FIG. Return to the working position where the receiving blade is engaged.

At this time, clutches 27 and 31 are disconnected,
For example, the cutting blade shaft 4 is rotationally driven via gears 35 and 36 by another power mechanism.

In the illustrated embodiment, the feed screw 16 is used as a moving means for the gripping device 17, but the gripping device 17 may be indexed from side to side using a chain or wire, for example.

Furthermore, the gripping device 17 grips the cutting blade holder at two places, one at both ends and the other at the circumferential side.
1 if it is possible to securely hold the cutting blade holder in the specified position and firmly hold it so that it does not rotate.
There may be two gripping means.

Furthermore, in order to relatively rotate the cutting blade holder fixed by the gripping device and the cutting blade shaft to tighten and release the cutting blade holder, a release mechanism is attached to the left end of the swing shaft and the cutting blade shaft. Although a tightening mechanism is provided separately at the right end, this mechanism may be replaced by a single rotating mechanism. In that case, there is a possibility that the gripping device, the cutting blade holder, or the clutch may slip, and it would be desirable to provide a means to detect whether the gripping device is securely tightened or released, and to respond accordingly.

Note that the present invention may be a cutting blade holder of a type that is fixed by a relative rotation operation with respect to the cutting blade shaft. For example, as in Patent No. 1170074 (Japanese Patent Publication No. 57-55560) filed by the present applicant, a locking pawl that can slide along a groove carved in the axial direction of the cutting blade shaft is built into the cutting blade holder. However, it can also be applied to a device in which this is biased in the rotational direction by a spring, and the locking pawl is locked in a plurality of circumferential grooves carved at small intervals on the axis of the cutting blade. .

In this case, as soon as the holding device is released, the cutting blade holder is fixed by the action of the spring, so that the tightening means corresponding to the clutch 31 to cylinder 33 in the previously illustrated embodiment are No longer needed.

According to the cutting blade moving device in the slitter machine of the present invention, the cutting blade can be moved without directly touching the cutting blade, which is extremely safe and efficient. Since manual work is eliminated, the positioning of the cutting blade can be performed automatically, accurately, and quickly by program-controlling a series of operations.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the cutting blade moving device in the slitter machine of the present invention, and Fig. 1 is a side view schematically showing the entire slitter machine, and Fig. 2 shows the movement of the cutting blade, receiving blade, and cutting blade. 3 is a sectional view showing an example of a cutting blade holder, FIG. 4 is a side view showing an example of a gripping device,
FIG. 5 is a chart showing the order of moving the cutting blade holder. 1... Cutting blade, 2... Receiving blade, 3... Cutting blade holder, 4... Cutting blade shaft, 10... Receiving blade shaft, 11...
... Arm, 12 ... Swing axis, 13 ... Swing motor, 14 ... Arm, 15 ... Spline shaft, 1
6...Feed screw, 17...Gripping device, 18, 19
... Motor, 27, 31 ... Clutch, 28,
30, 32, 34... Gear, 29, 33... Cylinder.

Claims (1)

[Claims] 1. A cutting blade shaft 4 is disposed parallel to the receiving blade shaft 10 in which a large number of receiving blades 2 are arranged and its distance can be changed, and a cutting blade holder for holding the cutting blade 1 is provided on the cutting blade shaft. 3 are loosely fitted, and the cutting blade holder 3 is connected to the cutting blade shaft 4 by rotating the cutting blade holder 3 relative to the cutting blade shaft 4.
By fixing the cutting blade 1 at an arbitrary position and moving the cutting blade axis close to the receiving blade axis 10, the cutting blade 1 can be attached to a large number of receiving blades 2,
In a slitter machine that cuts a wide sheet material into narrow widths by passing it between the receiving blade 2 and the cutting blade 1, the cutting blade moves parallel to the cutting blade axis 4 and cuts the material into thin pieces. The cutting blade shaft 4 and the receiving blade shaft 1
A gripping device 17 is provided to grip the cutting blade holder 3 on the cutting blade shaft 4 so as not to rotate when the receiving blade 2 and the cutting blade 1 are in a disengaged position. A cutting blade moving device for a slitter machine, characterized in that the cutting blade shaft 4 is rotated while the cutting blade holder 3 is gripped, so that the cutting blade holder 3 and the cutting blade shaft can be freely engaged and disengaged from each other.