JPH021636B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention comprises a cutter device for cutting a running long sheet (for example, paper) in its width direction. This invention relates to a cutter roll gap adjustment device.

[Prior art]

A cutter roll 2 having a knife 1 protruding from its outer peripheral surface as shown in FIGS. 6 and 7;
A cutter device consisting of a combination of this cutter roll 2 and an anvil roll 3 disposed oppositely is already known, and a cutter device consisting of such a combination of two rolls 2 and 3 is shown in the figure. As shown in FIG. 2, a pair of gap adjustment rings 4, 4 are disposed on both sides of the knife 1 of the cutter roll 2, integrally with the cutter roll 2, and the outer peripheral surface of the pair of gap adjustment rings 4, 4 is disposed integrally with the cutter roll 2. By contacting the outer peripheral surface of the anvil roll 3 with pressure, a desired gap α is provided between the cutting edge of the knife 1 and the anvil roll 3, and the cutter roll 2
Adjustment of the gap α between the cutter rolls when the cutting edge of the knife 1 becomes worn is to adjust the gap α between both rolls 2 and 3.
By pressurizing the bearings 5 and 6 that support the bearings in the direction in which they approach each other, and adjusting the rolling contact pressure P between the gap adjustment rings 4 and 4 and the anvil roll 3 (gradually increasing it), the gap between the pair can be adjusted. The elastic strain at the contact surfaces of the rings 4, 4 and the anvil roll 3 was increased. That is, by increasing this elastic strain, the gap α between the cutter rolls was made smaller.

[Problem that the invention seeks to solve]

However, the gap adjustment mechanism of the cutter roll having such a structure is such that when the rolling contact pressure P is applied between the rings 4, 4 and the roll 3, a gap occurs at the contact surface between the gap adjustment rings 4, 4 and the anvil roll 3. Since the gap can only be adjusted within the range of extremely minute elastic deformation, the range of gap adjustment that can be adjusted by this elastic deformation is extremely small, and therefore the life of the cutter roll is extremely short. There was a problem called short. Also,
The cutter roll gap adjustment mechanism having such a structure has a problem in that an excessive contact pressure P is inevitably required in order to widen the gap adjustment range.

Therefore, in a cutter device consisting of a pair of rolls as described above, the gap between the cutter rolls can be changed and adjusted more easily over a larger range in order to extend the life of the knife of the cutter roll. The purpose of the present invention is to provide a cutter roll gap adjustment device that can be used.

[Means to solve the problem]

In order to achieve the above object, the configuration adopted by this invention will be explained with reference to FIGS. 1 to 7.
In this invention, a pair of gap adjustment rings 4, 4 disposed on both sides of either the cutter roll 2 or the anvil roll 3 are rolled into contact with the circumferential surface of the other roll 3 or 2. In a cutter device in which a desired gap is provided between both rolls 2 and 3, the pair of gap adjusting rings 4, 4 are arranged so that the outer ring 7 has a tapered inner circumferential surface 7a and the outer ring 7 has a tapered inner circumferential surface 7a. Inner peripheral surface 7a of outer ring 7
and a wedge ring 8 having a tapered outer circumferential surface 8a fitted to the outer ring 7 of each clearance adjustment ring 4.
and wedge ring 8, a relative axial movement means for relatively changing the outer ring 7 and wedge ring 8 in the axial direction in a state where the outer ring 7 and wedge ring 8 are fitted to each other is disposed. The cutter roll gap adjustment device is characterized by:

[Effect]

The above technical means works as follows. The gap adjustment ring 4 constituting the cutter roll gap adjustment device according to the present invention is composed of an outer ring 7 having a tapered inner circumferential surface 7a and an inner circumferential surface of the outer ring 7. 7a and a wedge ring 8 having a tapered outer circumferential surface 8a that fits into the outer ring 7a. 8a, the gap adjusting ring 4 allows the outer ring 7 and the wedge ring 8 to be moved relative to each other in the axial direction when the outer circumferential surface 8a of the wedge ring 8 is fitted to the inner circumferential surface 7a of the outer ring 7. When the outer ring 7 is displaced symmetrically, the outer diameter of the outer ring 7 can be changed within the range within which elastic deformation is allowed. In order to change the outer diameter of the outer ring 7 by relatively displacing the rings 7 and 8 in the axial direction, a
A pair of gap adjustment rings 4, 4 are provided with relative axial movement means, and are capable of variably adjusting the diameters of their outer circumferential surfaces as described above.
Since they are brought into rolling contact with the inner peripheral surface of the other roll 3 or 2 which is disposed opposite to the one roll 2 or 3 to which it is attached, the cutter roll gap adjustment device of the present invention , a wedge ring 8 that acts to expand the diameter of the outer ring 7 against the inner circumferential surface 7a as if it were a wedge.
By changing the elasticity by the action of the cutter roll, the gap between the cutter rolls can be freely changed and adjusted
The adjustment range is such that the elastic deformation in the diametrical direction in the outer ring 7 is larger than the amount of elastic deformation allowed at the rolling contact surface between the gap adjustment rings 4, 4 and the anvil roll 3 in the conventional device. Therefore, it is larger than that of the conventional device.

〔Example〕

One embodiment will be explained with reference to FIGS. 1 and 2. Like the conventional cutter device shown in FIGS. 6 and 7, the cutter device embodying the present invention has a knife 1 protruding from its circumferential surface. Iru cutter roll 2
and an anvil roll 3 disposed opposite to the cutter roll 2. Similar to the conventional example shown in FIGS. 6 and 7, a pair of gap adjustment rings 4, 4 are arranged on the cutter roll 2 side. However, the pair of gap adjustment rings 4, 4 according to the present invention are particularly constructed as follows.

That is, each spacing adjustment ring 4 is adjusted to the side surface 2a of the cutter roll 2, as shown in FIG.
an outer ring 7 having a tapered inner circumferential surface 7a tapered on the side in contact with the outer ring 7;
A tapered outer peripheral surface 8a that fits into the inner peripheral surface 7a of
The wedge ring 8 has an inner circumferential surface 8b slidably fitted onto a shaft 9 projecting laterally from the cutter roll 2. , the outer ring 7 is externally fitted onto the wedge ring 8, and its one side 7c is connected to the side 2 of the cutter roll 2.
It is brought into contact with a. Moreover, between the wedge ring 8 and the cutter roll 2 of this embodiment, a means for moving the wedge ring in the axial direction as described below is provided. That is, the wedge ring axially moving means of this embodiment has its head 10a.
is engaged with the side surface of the wedge ring 8, and the main body 10b is inserted into the hole 1 formed in the wedge ring 8.
A tightening bolt 10 is inserted into the wedge ring 2 and its male threaded part is screwed into a female threaded hole 21 made in the side surface 2a of the cutter roll 2. The gap adjusting ring 4 of this embodiment is configured by tightening the wedge ring 8 toward the side surface 2a of the cutter roll 2 using the tightening bolt 10. As the tapered outer circumferential surface 8a is fitted into the tapered inner circumferential surface 7a of the outer ring 7, whose movement in the same direction is prevented by contacting the side surface 2a of the cutter roll 2, Since the outer ring 7 is moved in the axial direction in the direction of enlarging its diameter, at this time, the outer diameter of the outer ring 7 is enlarged within the allowable limit of its elastic deformation, and conversely, the tightening bolt 10 is loosened to tighten the bolt. 13, the wedge ring 8 moves away from the side surface 2a of the cutter roll 2, that is, in a direction that restores (reduces) the diameter of the inner peripheral surface 7a of the outer ring 7. When the outer ring 7 is moved a desired amount in this direction and the side surface 7c of the cutter roll 2 is brought into contact with the side surface 2a of the cutter roll 2, the outer diameter of the outer ring 7 is changed between the inner circumferential surface 7a of the outer ring 7 and the outer circumferential surface 8a of the wedge ring 8. In the fitted state, both rings 7, 8 are contracted by the amount of relative axial movement.

Therefore, the clearance adjustment ring 4 of this embodiment
is within the limit of elastic deformation of the outer ring 7,
By tightening or loosening the tightening bolt 10 and jack bolt 13, the outer diameter can be increased or decreased. That is, the gap between the cutter rolls can be adjusted.

When manufacturing the gap adjusting device of this embodiment, the gap is adjusted so that the outer diameter of the outer ring 7 becomes equal to the cutting edge diameter of the cutter roll 2 with the wedge ring 8 of the gap adjusting ring 4 properly tightened. By processing the outer diameter of the ring 4, you can create a gap between the cutting edge of the knife 1 and the anvil roll 3 by tightening or loosening the tightening bolt 10 and the jack bolt 13 in the completed gap adjusting device. Alternatively, the blade edge of the knife can be caused to interfere with the anvil roll 3.

Next, another embodiment will be described with reference to FIG. 3. As shown in FIG. 3, the above-described axial movement means for the wedge ring 8 includes a male threaded portion 9a formed on the outer periphery of the shaft 9. A tightening nut 14 is screwed onto the male threaded portion 9a and brought into contact with the side surface 8d of the wedge ring 8, and a tightening nut 14 is screwed into the female threaded hole 12 drilled in the wedge ring 8 and its tip collides with the hole 15 on the side surface 2c of the cutter roll 2. It may also be configured with a jack bolt 13 that has been adjusted.

Further, in each of the above embodiments, an example was shown in which the relative axial movement means between the cutter roll 2 and the anvil roll 3 is an axial movement means for the wedge ring disposed on the wedge ring 8, but other embodiments may be used. As shown in FIGS. 4 and 5, a wedge ring 8 is integrally provided with the roll 2 and projects from the side surface 2a of the cutter roll 2 to the side thereof, and the wedge ring 8 is provided between the outer ring 7 and the wedge ring 8. The relative axial movement means may also consist of axial movement means of the outer ring as follows. That is, the means for axially moving the outer ring in this embodiment has its head 16a engaged with the side surface of the outer ring 7, its main body 16b inserted into the hole 17 formed in the outer ring 7, and its male threaded portion The tightening bolt 16 is screwed into the female threaded hole 18 made in the side surface 2a of the cutter roll 2, and the screw is inserted into the female threaded hole 19 made in the outer ring 7, so that its tip collides with the side surface 2a of the cutter roll 2. It is also configured with a jack bolt 20. In the case of this embodiment, the inner circumferential portion 7a of the outer ring 7 and the outer circumferential portion 8a of the wedge ring 8,
The outer diameter of the outer ring 7 can be changed by tapering in a direction opposite to that of the embodiment described above, and by moving the outer ring 7 itself in the axial direction.

Further, in each of the above embodiments, an example was shown in which the cutter roll gap adjustment device was configured by disposing a pair of gap adjustment rings 4, 4 on the cutter roll 2 side, but the gap adjustment device of the present invention ,
This may be constructed by disposing a pair of gap adjustment rings 4, 4 as described above on the anvil roll 3 side (not shown).

〔effect〕

The cutter roll gap adjustment device of this invention is
With the above configuration, the diameter of the outer ring fitted onto the wedge ring can be adjusted over a large range by the tapered outer circumferential surface of the wedge ring fitted onto the tapered inner circumferential surface of the outer ring. Therefore, the cutter roll gap adjustment device according to the present invention can increase or decrease the gap only within the range of elastic strain allowed when the gap adjustment ring is pressed between a pair of rolls. Compared to conventional equipment, the gap between a pair of rolls can be adjusted extremely easily over a larger range without applying excessive rolling contact pressure between the pair of rolls. can extend the life of the knife.

Further, since the cutter roll gap adjustment device according to the present invention has the above-described configuration,
At the time of manufacturing, the outer diameter of the clearance adjustment ring is set to the diameter of the cutting edge of the cutter roll or the outer diameter of the anvil roll, with the wedge ring that acts to push and spread the outer ring moderately acting on the outer ring. If you process them at the same time so that they are the same, the finished gap adjustment device will allow you to move the wedge ring or outer ring in the axial direction where the outer circumferential surface of the wedge ring is more strongly pressed against the inner circumferential surface of the outer ring. , or in the opposite direction, it is possible to create a gap between the knife edge and the anvil roll, or to allow the knife edge to interfere with the anvil roll. can adjust this gap.

As described above, the cutter roll gap adjustment device according to the present invention adjusts the outer diameter of the gap adjustment ring to the cutting edge of the cutter knife of the cutter roll on which it is disposed or the anvil roll when manufacturing the cutter roll or anvil roll. By manufacturing it so that it is equal to the outer diameter, high precision can be achieved with a gap that can be easily adjusted.

[Brief explanation of drawings]

Fig. 1 is a partially longitudinal front view showing one embodiment of the cutter roll gap adjustment device according to the present invention, Fig. 2 is a side view of the same, and Fig. 3 is a part of the main part showing another embodiment. 4 is a partially longitudinal sectional front view of the main part showing another embodiment, FIG. 5 is a partially cutaway side view of the same, and FIG. 6 is a front view of the cutter device showing a conventional example. , FIG. 7 is a sectional view taken along the line -- in FIG. 6. 1... knife, 2... cutter roll, 3...
Anvil roll, 4... Gap adjustment ring, 7...
Outer ring, 7a...Tapered inner peripheral surface, 8...
...Wedge ring, 8a...Tapered outer peripheral surface, 9...Shaft, 10...Tightening bolt, 13...Jet bolt, 14...Tightening nut, 16...Tightening bolt, 20...Jet bolt.

Claims (1)

[Claims] 1 A pair of gap adjustment rings disposed on both sides of either the cutter roll or the anvil roll are brought into rolling contact with the circumferential surface of the other roll, so that the gap between the two rolls is adjusted. The pair of gap adjustment rings each include an outer ring having a tapered inner circumferential surface and a tapered outer circumferential surface fitted to the inner circumferential surface of the outer ring. and a wedge ring having A gap adjusting device for a cutter roll, characterized in that a relative axial movement means for displacing the cutter roll is provided. 2 The outer ring is prevented from moving in the axial direction in the direction in which its inner circumferential surface is tapered by having its one side in contact with the side surface of the roll, and the wedge ring is prevented from moving in the axial direction in the direction in which the inner circumferential surface is tapered, and the wedge ring is The wedge ring is slidably fitted onto the shaft portion protruding toward the opposite direction, and the relative axial movement means between the two rings is constituted by a wedge ring axial movement means disposed on the wedge ring. A cutter roll gap adjustment device according to claim 1. 3. The wedge ring axially moving means engages its head with the side surface of the wedge ring, inserts its main body through a hole formed in the wedge ring, and screws its male threaded portion into a female threaded hole formed on the side surface of the roll. The gap between the cutter rolls according to claim 2, wherein the cutter roll gap is constituted by a tightening bolt that is screwed into a wedge ring, and a jack bolt that is screwed into a female screw hole drilled in a wedge ring so that its tip collides with the side surface of the roll. Adjustment device. 4. The means for axially moving the wedge ring includes a tightening nut that is screwed onto a male threaded portion formed on the outer periphery of the shaft and brought into contact with a side surface of the wedge ring, and a tightening nut that is screwed into a female threaded hole drilled in the wedge ring at its tip. The cutter roll gap adjusting device according to claim 2, further comprising a jack bolt whose portion collides with the side surface of the roll. 5. The wedge ring projects from the side of the roll integrally with the roll, and the relative axial movement means between both rings moves in the axial direction of the outer ring disposed on the outer ring. The cutter roll gap adjustment device according to claim 1, further comprising a moving means. 6. The means for axially moving the outer ring engages its head with the side surface of the outer ring, inserts its main body into a hole formed in the outer ring, and inserts its male threaded portion into a female threaded hole formed on the side surface of the roll. Claim 5 is comprised of a tightening bolt screwed together and a jack bolt screwed into a female threaded hole drilled in the outer ring so that its tip collides with the side surface of the roll. Gap adjustment device for cutter rolls.