JPS6040319Y2 - Lower blade mechanism in slitter - Google Patents

Description

[Detailed description of the invention] The present invention relates to a slitter for cutting a sheet-like material in the longitudinal direction to obtain two or more pieces of Sayama sheet-like material, and more specifically, it is used in combination with an upper blade to perform continuous slitting. This relates to the lower blade mechanism of the cutting section.

The cutting section of a conventional slitter has a structure shown in Fig. 3, in which a disc-shaped upper blade 12 and a donut-shaped lower blade 2 are used to cut a traveling sheet-like object at an interval corresponding to the finishing width. On the other hand, the cutting is performed from the top and bottom directions.

The lower blade mechanism in this cutting section includes a lower blade roll 1 that is horizontally mounted, a plurality of lower blades 2, 2, etc. that are arranged in multiple rows and fitted around the roll, and the lower blades 2, 2, etc. Blade 2, 2...
- Spacing members 3', 3', etc. are inserted between the lower blade rolls 1, and the spacing members 3', 3', etc. used in this lower blade mechanism are used for the lower blade roll 1. roll 1
Since it is a tube with a predetermined length that is sized in advance according to the cutting of the sheet-like material, when changing the width, the spacing member 3 of the appropriate size is used each time. ′
This replacement work involves removing the entire lower blade mechanism from the machine, removing all of the lower blade 2 and the spacing member 3' from the lower blade roll 1, and then replacing the spacing member 3 with the It is necessary to replace the slitter and fit it onto the lower blade roll 1, which is time-consuming and results in considerable operation loss time, which is undesirable because it lowers the operating rate of the slitter.

In addition, it is necessary to prepare a large number of spacing members corresponding to various cutting widths, which not only requires a large storage space but also increases the initial cost.

Focusing on the fact that the conventional ones had disadvantages in terms of economics, the present invention uses a type of spacing material to freely adjust the spacing between the lower blades within a certain size range. An important objective is to make it possible to perform the width changing operation easily and quickly.

Therefore, in order to achieve the above-mentioned object, the present invention particularly provides an adjustment nut having a donut-shaped lower blade, an outer peripheral surface having the same outer diameter, and a smooth end surface that abuts against one end surface of the lower blade.
At one end of the cylindrical part that is fitted into the lower blade roll and screwed into the adjustment nut, there is a flange having an outer peripheral surface having the same outer diameter as the lower blade and a smooth end surface that comes into contact with the opposite end surface of the lower blade. The feature of the structure is that the spacing member is formed from a male thread provided with a rim, and thus when changing the cutting width, the threaded length between the adjustment nut and the separating screw can be adjusted appropriately. By adjusting it, it is possible to maintain the desired length of spacing, and there is no need to attach and detach the lower blade and spacing member.
This has led to a reduction in the time required to change the width.

Hereinafter, one embodiment of the mechanism of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a longitudinal cross-sectional view of a cutting section of a slitter, which has a lower blade mechanism and a lower blade mechanism disposed one above the other.

A disc-shaped upper blade 12 is held by an upper blade holder 13 in which the upper blade mechanism is fitted and fixed at a predetermined interval to an upper blade shaft 11 which is rotatably mounted in the direction of travel of the sheet-like object. It is a structure that is supported at a predetermined interval.

On the other hand, the lower blade mechanism is parallel to the upper blade shaft 11 and is mounted on the shaft so that it can rotate in the running direction of the sheet material.
, a plurality of lower blades 2, 2 . Spacing member 3, 3.
It is composed of...

The lower blades 2, 2, .
It is arranged so that the sheet-like object is cut from the top and bottom by the sharp tip of the blade.

The above-mentioned spacing members 3, 3, .
The lower blade roll 1 is formed into a cylindrical body that is loosely fitted to the lower blade roll 1, and has the same outer diameter as the lower blades 2, 2, .

The adjusting nut 4 has an end surface 6 opposite to the side into which the male screw 5 is screwed into a smooth surface that can come into contact with one end surface of the lower blades 2, 2, . . . .

On the other hand, the male thread 5 is formed into a cylindrical body with a flange, and the lower blade roll 1
The cylindrical portion 7 that is fitted into and screwed into the adjustment nut 4 is
A thread groove is carved into the adjustment nut 4 to be screwed into the thread groove, and a lower blade 2 is provided at one end on the opposite side to the side into which the screw is inserted.
, 2 . . . and a flange 8 having a smooth end surface 9 that comes into contact with the opposite end surface of the lower blades 2 , 2 . . . .

The lower blade mechanism according to the present invention has the above-described structure, but in order to continuously cut a traveling sheet-like object with the upper blade 12 and the lower blade 2, the peripheral surface of the lower blade 2 must be cut as shown in the figure. It is necessary to have a structure in which a sufficient gap is maintained between the cutting edge 2a and the end face 9 of the male screw 5 for the upper blade 12 to enter. It is the same as the lower blade structure.

Note that 10 in FIG. 1 is a turning hole provided on the circumferential surface of the adjusting nut 4 for inserting a turning tool.

The lower blade mechanism with the above configuration consists of an adjustment nut 4 and a male screw 5.
The spacing holding members 3, 3... consisting of the lower blades 2, 2...
・It is fixed and integrated by means such as applying collars of the same diameter to the outside of the lower blades 2.2 at both ends with the lower blades 2.2 inserted between them, but the distance between the lower blades 2.2 or To adjust the dimension corresponding to the cutting width of the sheet-like material, use the turning hole 10 to turn the adjustment nut 4, and adjust the degree of screw engagement with the male screw 5, thereby setting any desired spacing. It is possible to change the width without removing the lower blade 2 and the spacing member 3 from the lower blade roll 1, and the time required for changing the width can be greatly shortened compared to the conventional one.

Next, FIG. 2 shows another embodiment of the present invention, in which the peripheral surfaces of the lower blades 2, 2, etc. are parallel to the central axis in the example shown in FIG. While it is a cylindrical surface,
A portion of the circumferential surface 2b connected to the cutting edge 2a is formed into a tapered surface, that is, a conical surface, whose diameter gradually decreases toward the cutting edge 2a side, and the cutting edge 2a has a dimension d slightly larger than the outer periphery of the lower blade mechanism.
It has a sunken shape.

By forming the lower blades 2, 2... in this way,
It is possible to prevent sheet-like objects, especially hard films, from being scratched by the cutting edge of the lower blade 2 when it is not in use.

That is, with the lower blade roll 1 assembled with the maximum number of lower blades 2 and spacing members 3, some of the lower blades 2, such as every other one, are assembled. When using the unused lower blade 2 to cut sheet-like materials,
The sharp cutting edge 2a... is slightly sunken from the outer periphery of the lower blade 2... and the spacing member 3..., so it does not come into contact with the sheet-like object and therefore does not cause damage. It is.

As described above, in the present invention, the spacing member 3...
The adjustment nut 4 and the male thread 5 are formed into a screwing relationship with each other so that the axial length of the lower blade roll 1 can be freely adjusted within a certain range. The distance between the lower blades 2 and 2 can be adjusted simply by changing the degree of engagement between the lower blades 2 and the male screw 5, and therefore the lower blades 2 and the spacing holding member 3 need only be attached to the lower blade roll 1. The width change operation is easy, the processing time required for width change can be greatly shortened, and the operation rate in the original processing is increased, which greatly contributes to improving productivity and reducing production costs.

Furthermore, compared to conventional systems that require a variety of spacing members depending on the type of meat to be processed, this lower blade mechanism for slitter has the advantage of requiring less storage space, making it a highly practical lower blade mechanism.

[Brief explanation of the drawing]

Fig. 1 is a front view partially showing a main part of a slitter according to an embodiment of the present invention, Fig. 2 is a partial front view partially showing an example of the present invention in cross section, and Fig. 3 is a conventional slitter. FIG. 2 is a partially sectional front view of a main part of the FIG. 1...Roll for lower blade, 2...Lower blade, 3
...... Spacing member, 4... Adjustment nut, 5... Male thread, 6... End face, 7...
...Cylinder part, buttock...Tsuba, 9...End face.

Claims (1)

[Scope of utility model registration request] A lower blade roll 1 that is rotatably supported in the running direction of the sheet material, a plurality of lower blades 2 arranged in multiple rows around the roll, and lower blades 2 . .2 spacing retaining members 3, 3 inserted between the two and fitted onto the lower blade roll 1;
The spacing holding members 3, 3... consist of an outer peripheral surface having the same outer diameter as the donut-shaped lower blades 2, 2... and one side of the lower blades 2, 2... An adjustment nut 4 having a smooth end surface 6 that is brought into contact with the end surface, and one end of a cylindrical portion 7 that is fitted onto the lower blade roll 1 and screwed into the adjustment nut 4, are provided with the lower blades 2, 2, .・It is characterized by being formed from a male thread 5 edged with a collar 8 having an outer circumferential surface with an equal outer diameter and a smooth end surface 9 that comes into contact with the opposite end surface of the lower blade 2.2. The lower blade mechanism in the slitter.