JPS62213996A - Clearance regulator for cutter roll - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

[Prior art]

Knife l on its outer circumferential surface as shown in Figures 6 and 7.
A cutter device is already known, which consists of a combination of a cutter roll 2 with a projecting surface and an anvil roll 3 placed opposite to this cutter roll 2. In this cutter device, as shown in the figure, a pair of gap adjustment rings 4 are provided integrally with the cutter roll 2 on both sides of the knife 1 of the cutter roll 2. By bringing the outer circumferential surfaces of the pair of gap adjustment rings 4, 4 into pressure rolling contact with the outer circumferential surface of the anvil roll 3, a desired gap α can be provided between the cutting edge of the knife l and the anvil roll 3. When the cutting edge of the knife 1 of the cutter roll 2 becomes worn out, the gap α between the cutter rolls can be adjusted by pressing the bearings 5 and 6 that support both rolls 2 and 3 in the direction in which they approach each other. Gap adjustment rings 4, 4 and anvil roll 3
By adjusting (gradually increasing) the rolling contact pressure P between the pair of gap adjustment rings 4, 4 and the anvil roll 3,
This was done by increasing the elastic strain at the tangent surface. That is, by increasing this elastic strain, the gap α between the cutter rolls was decreased.

[Problem that the invention seeks to solve]

However, the clearance 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 and the roll 3, the clearance adjustment mechanism that is generated at the contact surface between the clearance adjustment rings 4 and the anvil roll 3 is Since the gap can only be adjusted within the range of very small elastic deformation, the range of gap adjustment that can be adjusted by this elastic deformation is very small, and therefore the life of the cuffter roll is very short. There was a problem. Further, in the cutter roll gap adjustment mechanism having such a structure, there is 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 present invention allows the gap between the cutter rolls to be changed and adjusted more easily over a larger range in order to extend the life of the knife of the cutter roll. It is an object of the present invention to provide a cutter roll gap adjustment device that can adjust the cutter roll gap.

(Means for Solving the Problems) In order to achieve the above object, the configuration adopted by the present invention will be explained with reference to FIGS. 1 to 7. A pair of gap adjustment rings 4, 4 disposed on both sides of one of the rolls (2 or 3) are brought into rolling contact with the circumferential surface of the other roll (3 or 2), so that both rolls 2 - In a cutter device in which a desired gap is provided between the outer ring 7 and the inner circumferential surface of the outer ring 7, the pair of gap adjustment rings 4, 4 have a tapered inner circumferential surface 7a, respectively. 7a and a wedge ring 8 having a tapered outer circumferential surface 8a fitted to the outer ring 7a, and between the outer ring 7 and wedge ring 8 of each gap adjustment ring 4, an outer ring A cutter roll characterized in that a relative axial movement means is provided for relatively displacing the outer ring 7 and the wedge ring 8 in the axial direction in a state in which the outer ring 7 and the wedge ring 8 are fitted together. It is in the gap adjustment device.

[Effect]

The above technical means works as follows. The gap adjusting ring 4 constituting the cutter roll gap adjusting 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 7a of the outer ring 7. The wedge ring 8 has a tapered outer circumferential surface 8a that fits into the outer ring 7, and the other wedge ring 8 is attached to the inner circumferential surface 7a of one outer ring 7. Since the surfaces 8a are fitted together, the clearance adjusting ring 4 allows the outer ring 7 and the wedge ring 8 to be aligned in a state where the outer circumferential surface 8a of the wedge ring 8 is fitted onto the inner circumferential surface 7a of the outer ring 7. When the outer ring 7 is relatively displaced in the direction, 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 both rings 7 and 8 in the axial direction, a relative axial movement means is disposed between both rings 7 and 8, A pair of gap adjustment rings 4, 4, each of which can variably adjust the diameter of its outer circumferential surface as described above, are installed opposite to one of the rolls (2 or 3) to which they are attached. However, since the outer ring 7 is in rolling contact with the inner circumferential surface of the other roll (3 or 2), in the cutter roll gap adjustment device of the present invention, the diameter of the outer ring 7 is adjusted as if it were relative to the inner circumferential surface 7a. When the elasticity is changed by the action of the wedge ring 8 which acts to push and spread like a pattern, the gap between the cutter rolls can be freely changed and adjusted. , is larger than the amount of elastic deformation allowed in the rolling contact surface between the gap adjustment rings 4, 4 and the anvil roll 3 in the conventional device, and is therefore larger than that in the conventional device.

〔Example〕

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

That is, as shown in FIG. 1, each amount adjustment ring 4 includes an outer ring 7 having a tapered inner circumferential surface 7a that is tapered on the side that contacts the side surface 2a of the cutter roll 2, and this outer ring. 7 and a wedge ring 8 having a tapered outer circumferential surface 8 a that fits into the inner circumferential surface 7 a of the cutter roll 2 . The outer ring 7 is fitted onto the wedge ring 8 so that its one side 7C is in contact with the side 2a of the cutter roll 2. ing. 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 axial moving means of this embodiment engages its head 10a with the side surface of the wedge ring 8, and moves its main body lO.
A tightening bolt 10 is inserted into a hole 11 made in the wedge ring 8, and its male threaded portion is screwed into a female threaded hole 21 made in the side surface 2a of the cuffing roll 2. It is screwed into the female screw hole 12 and its tip collides with the side surface 2a of the cutter roll 2.
The gap adjustment ring 4 of this embodiment is constructed with a jack bolt 13, and when the wedge ring 8 is tightened with the tightening bolt 10 in a direction approaching the side surface 2a of the cutter roll 2, its tapered outer periphery Surface 8a
is fitted into the tapered inner circumferential surface 7a of the outer ring 7, which is prevented from moving in the same direction by contacting the side surface 2a of the cutter roll 2. Since the outer ring 7 is moved in this direction, the outer diameter of the outer ring 7 is expanded within the allowable limit of its elastic deformation.On the other hand, when the tightening bolt 10 is loosened and the jack bolt 13 is screwed in, The wedge ring 8 moves in a direction 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 outer ring 7 is brought into contact with the side surface 2a of the cutter roll 2, the outer diameter of the outer ring 7 is equal to the inner circumferential surface 7a of the outer ring 7 and the outer circumference of the wedge ring 8. In the fitted state of the surfaces 8a, both rings 7 and 8 are reduced by the amount of relative movement in the axial direction.

Therefore, the outer diameter of the gap adjustment ring 4 of this embodiment can be increased or decreased by tightening or loosening the tightening bolt 10 and the jack bolt 13, as long as the outer ring 7 is within the elastic deformation limit. You can

That is, the gap between the cutter rolls can be adjusted.

The gap adjustment device of this embodiment is manufactured by:
When the wedge ring 8 of the gap adjustment ring 4 is properly tightened, the outer diameter of the gap adjustment ring 4 is machined so that the outer diameter of the outer ring 7 is equal to the cutting edge diameter of the cutter roll 2. In the gap adjustment device, by tightening or loosening the tightening bolt 10 and the jack bolt 13, a gap is created between the blade edge of the knife 1 and the anvil roll 3, or the blade edge of the knife is caused to interfere with the anvil roll 3. be able to.

Next, another embodiment will be described with reference to FIG. 3. As shown in FIG. 3, the above-mentioned 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 napft 14 is screwed onto this male threaded portion 9a and brought into contact with the side surface 8d of the wedge ring 8, and a tightening napft 14 is screwed into the female threaded hole 12 drilled in the wedge ring 8 and its tip is attached to the side surface 2C of the cutter roll 2. It may also be configured with a jack bolt 13 that collides with the hole 15 of the hole 15.

Further, in each of the above embodiments, the relative axial movement means between the cutter roll 2 and the anvil roll 3 is the axial movement means of the wedge ring disposed on the wedge ring 8, but other In the example of 4th and 5th
As shown in the figure, 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 relative axis between the outer ring 7 and the wedge ring 8 is The directional movement means may be constituted by 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 a tightening bolt 16 screwed into a female threaded hole 18 formed in the side surface 2a of the cutter roll 2;
It is screwed into a female threaded hole 19 bored in the outer ring 7 and its tip collides with the side surface 2a of the cutter roll 2.
It is composed of a jack bolt 20. In the case of this embodiment, the inner circumferential surface 7a of the outer ring 7 and the outer circumferential surface 8a of the wedge ring 8 are tapered in a direction opposite to that of the previous embodiment, so that the outer ring 7 itself can be moved in the axial direction. This allows the outer diameter of the outer ring 7 to be changed and adjusted.

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 on the cutter roll 2 side, but the gap 31 of the present invention ! The adjustment device may be constructed by disposing a pair of gap adjustment rings 4 as described above on the anvil roll 3 side (not shown).

〔effect〕

The cutter roll gap adjustment device of the present invention has the above-described configuration, and has a tapered wedge ring in which the diameter of the outer ring fitted onto the wedge ring is fitted to the tapered inner circumferential surface of the outer ring. Because it can be adjusted over a large range on the outer circumferential surface of
The cutter roll gap adjustment device according to the present invention has the following advantages when compared to conventional devices in which the gap can only be increased or decreased within the range of allowable elastic strain when the gap adjustment ring is pressed between a pair of rolls. The gap between the pair of rolls can be easily adjusted to 3A over a larger range without applying excessive contact pressure between the pair of rolls, thus extending the life of the knife of the cutter roll. Can be made longer.

Further, since the cutter roll gap adjusting device according to the present invention has the above-described configuration, when manufacturing the device, the wedge ring that acts to push and spread the outer ring is adjusted to have an appropriate effect on the outer ring. In this state, if the outer diameter of the gap adjustment ring is processed at the same time so that it is the same as the cutting edge diameter of the cutter roll or the outer diameter of the anvil roll, the wedge ring or By moving the outer ring in the axial direction where the outer circumferential surface of the wedge ring is pressed more firmly against the inner circumferential surface of the outer ring, or in the opposite direction, a gap can be created between the knife edge and the anvil roll. , the blade edge of the knife can be made to interfere with the anvil roll, and when the blade edge of the knife of the cutter roll is worn out, this gap can be adjusted.

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 when manufacturing the cutter roll or anvil roll. By making it equal to the outside diameter of the anvil roll, W! J simply allows for a high degree of precision in the adjustable gap.

[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 main part showing another embodiment. Sectional front view,
FIG. 4 is a partially longitudinal front view of the main part showing still another embodiment, FIG. 5 is a partially cutaway side view of the same part, and FIG. Figure 7 shows nv-yn in Figure 6.
It is a v-line sectional view. DESCRIPTION OF SYMBOLS 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... Jacket bolt, 14... Tightening nut, 16... Tightening bolt, 20 ... Jatsuki Boruto. Patent distributor Kawanoe Zoki Co., Ltd. agent (6370) Patent attorney Art supplies Takemi Figure 6 Figure 7 Figure 3 AZ-Billery

Claims (1)

[Claims] 1. A pair of gap adjustment rings disposed on both sides of either the cutter roll or the anvil roll,
The pair of gap adjusting rings should be in rolling contact with the circumferential surface of the other roll to provide a desired gap between the two rolls; a wedge ring having a tapered outer circumferential surface that is fitted onto the inner circumferential surface of the outer ring; A cutter roll gap adjustment device, characterized in that a relative axial movement means is provided for relatively displacing the outer ring and the wedge ring in the axial direction when the wedge rings are fitted together. . 2. By having one side of the outer ring in contact with the side surface of the roll, the inner peripheral surface is prevented from moving in the axial direction in the direction in which it becomes narrower, and the wedge ring is prevented from moving in the axial direction in the direction in which the inner circumferential surface is tapered. The relative axial movement means between the two rings is a wedge ring axial movement means disposed on the wedge ring. A cutter roll gap adjustment device as set forth in claim 1, which is comprised of: 3. The wedge ring axial moving means engages its head with the side surface of the wedge ring, inserts its main body into a hole drilled in the wedge ring, and inserts its male threaded portion into a female screw hole drilled in the side surface of the roll. Claim 2, comprising a tightening bolt screwed into the wedge ring, and a jack bolt screwed into a female threaded hole drilled in the wedge ring so that its tip collides with the side surface of the roll. The cutter roll gap adjustment device described in . 4. The means for axially moving the wedge ring includes a tightening nut screwed into a male thread formed on the outer periphery of the shaft and brought into contact with a side surface of the wedge ring, and a female threaded hole drilled in the wedge ring. The cutter roll gap adjustment device according to claim 2, comprising a jack bolt inserted into the jack bolt so that its tip collides with the side surface of the roll. 5. The wedge ring protrudes from the side of the roll integrally with the roll, and the relative axial movement means between the two rings is arranged on the outer ring. The cutter roll gap adjustment device according to claim 1, comprising an axial 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 in the side surface of the roll. Claim 5, comprising a tightening bolt screwed into the outer ring, 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. The cutter roll gap adjustment device described in .