JPS5920960Y2 - Drive roller in perforation forming machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a perforation forming machine, and more particularly to a drive roller that feeds paper into a cutter portion for forming perforations.

In a perforation forming machine that perforates paper along its side edges, a cutter holter and a cutter are set on upper and lower cutter shafts, and drive rollers for paper holding are set on both sides of the cutter.

These drive rollers must be in contact with the vicinity of both sides of the paper, and play an important role in holding down the paper, preventing it from bending or shifting, and providing feeding force to the paper. There is.

Generally, a roller fitted with a rubber ring is used on the upper side, and a metal roller is used on the lower side.

However, if many cutter holders are installed on the cutter shaft and drive rollers are installed on both sides of the cutter shaft, when perforating narrow paper, there will be extra cutter holders on both sides of the paper. The drive roller no longer holds the paper, resulting in various problems such as perforations being inserted crooked and the paper escaping from the cutter.

In order to change the position of the drive roller each time the width of the paper to be cut and perforated differs, it is necessary to remove the cutter holder and cutter from the drive shaft and then change the position of the drive roller, making the rearrangement work easy. It becomes something that is not.

In view of this, the present invention aims to solve the above problems by creating a structure in which the drive roller is divided into two parts and can be fixed at any position on the cutter shaft.
In particular, the present invention provides a drive roller for a perforation forming machine, which allows the rubber ring to be replaced even if the drive roller has a rubber ring, and also allows sufficient roundness to be obtained even when the drive roller is divided into two parts. .

The present invention will be explained below with reference to embodiments shown in the drawings.

Fig. 1 shows a drive roller 1 with a rubber ring used as an upper side, Fig. 2 shows a metal drive roller 2 used as a lower side in a perspective view, with the drive roller 2 removed from a cutter shaft. The drive roller 1 with rubber ring shown in FIG. 1 is shown exploded.

This drive roller 1 with a rubber ring is composed of a pair of roller parts 3, 4 divided into two along the diameter line, the same rubber ring parts 5, 5, and an intervening plate 6, 6. .

One side of the roller pieces 3 and 4 has a flange surface 7,
7, and the rubber ring pieces 5, 5 are formed on this side.
Semi-cylindrical rubber ring fitting fitting parts 8, 8 are provided protrudingly for creating grooves into which the flange surfaces 7, 7 are fitted.
A plurality of tapped holes 9°9... are bored in the hole.

Also, one roller piece 3 has mounting holes 10.
11 is screwed into screw holes 12, 12 formed on the mating surface of the other roller piece 4, so that the two pieces 3, 4 are joined by sandwiching the cutter shirts 1-13.

In the figure, 14 is a fixing screw for fixing the roller piece 3 to the cutter shaft 13, and the roller piece 3,
The diameter of the inner peripheral surface formed by the combination of cutter shaft 1
If the diameter is made slightly smaller than the diameter of the fixing screw 1,
4 is not necessarily required.

The rubber ring pieces 5, 5 are formed with a radius slightly larger than the radius of the flange surfaces 7, 7 of the roller pieces 3.4, and the screw holes 9, 9, . . .・Through holes 15, 15... are bored at positions corresponding to .

The presser plates 6, 6 have approximately the same size and shape as the flange surfaces 7, 7 of the roller pieces 3, 4, and have the same shape as the flange surfaces 7, 7 of the roller pieces 3, 4, and have the same shape as the flange surfaces 7, 7 of the roller pieces 3, 4, and
Set screw insertion holes 16, 16... at positions corresponding to...
is drilled.

In addition, the through holes 15, 15 of the rubber ring pieces 5, 5...
In order to prevent excessive compressive deformation of the rubber ring pieces 5, 5, collars 17, 17, etc. having dimensions slightly shorter than the thickness of the rubber ring pieces 5, 5 are fitted, and the set screws 18, 1
The amount of tightening by 8... is made constant.

However, if the material of the rubber ring pieces 5, 5 is sufficiently hard, the collars 17, 17, etc. may not be used.

Therefore, after bringing the rubber 97716 pieces 5, 5 into contact with the flange surfaces 7° 7 of each roller piece 3, 4 and bringing the inner peripheral surfaces into close contact with the outer peripheral surfaces of the fitting parts 8, 8, the rubber ring attachment material 5 ,5
Fit the collars 17, 17... into the through holes 15, 15..., then press the retaining plates 6, 6 and tighten the set screws 18°18.
. . , and are screwed into the screw holes 9, 9, .

As shown in the second diagram, the metal drive roller 2 corresponds to the configuration of the drive roller 1 with rubber rings except for the fitting parts 8, 8 of the roller parts 3, 4 and the screw holes 9, 9. 1, and the same reference numerals are given to the parts common to those in FIG. 1, and the description thereof will be omitted.

The drive roller 1 with a rubber ring configured as described above has the inner circumferential surfaces of the roller pieces 3 and 4 fitted into appropriate positions of the cutter shaft 13, as shown in an example in FIG. Both parts 3, 4 are joined with the cutter shaft 13 in between by passing bolts 11, 11 through the mounting holes 10.10 of the other part 4, and screwing them into the tapped holes 12.12 of the other part 4.
It is fixed to the shaft 13 with a fixing screw 14.

As a result, the rubber ring pieces 5, 5 are held in a perfect circle by fitting into the fitting parts 8, 8, and paper can be fed in the same manner as when a single rubber ring is used.

Note that the metal drive roller 2 may also be attached to the cutter shirts 1 to 19 in the same manner as in the above case.

Further, the constituent material of the rubber ring pieces 5, 5 is natural, synthetic rubber, or other elastic material having appropriate frictional force, and the roller pieces 3, 4 and the presser plates 6, 6 are limited to metal materials. good.

As described above, according to the present invention, the drive roller with the rubber ring can be easily attached and detached to the appropriate position on the drive shaft, so it can be easily set at the optimal position according to the width of the paper to be perforated. Therefore, inconveniences such as curling of the paper and bending of perforations are eliminated, and since the rubber ring piece is fixed in half to the roller piece with screws, there is no possibility that the rubber ring piece will wear out. Since the roller parts can be easily replaced and the roller parts can be used repeatedly, various effects such as being economical can be obtained.

[Brief Description of the Drawings] Figure 1 is a perspective view of the drive roller with a rubber ring according to the present invention in a removed state, Figure 2 is a perspective view of the same metal drive roller, and Figure 3 is the rubber ring shown in Figure 1. Cross-sectional view of the drive roller attached to the cutter shaft,
FIG. 4 is an exploded perspective view, and FIG. 5 is a front view of the device attached to the upper and lower cutter shafts. 1... Drive roller with rubber ring, 2...
...Metal drive roller, 3, 4...Roller piece, 5.5...Rubber ring attachment piece, 6,
6...presser foot, 7...flange surface,
8...Mating part, 9, 12...Waji hole,
11...Bolt, 13.19...To cutter shirt 1, 17...Color, 18...
...Set screw.

Claims (1)

[Scope of utility model registration request] In a perforation forming machine that forms perforations in paper using perforation forming cutters attached to upper and lower cutter shafts, a drive roller having at least a rubber ring among a pair of drive rollers provided on the upper and lower cutter shafts. , on the flange surface of one side of each roller part divided into two along the diameter line and on the fitting part protruding to form the rubber ring fitting groove.
The side and inner circumferential surfaces of a rubber ring piece that is divided and has a radius slightly larger than the flange surface are brought into close contact with each other, and a presser plate having approximately the same size and shape as the flange surface is brought into contact with this rubber ring piece. The rubber ring piece is inserted through and fixed by a set screw screwed into the flange surface, and the inner circumferential surfaces of both roller pieces are fitted onto the cutter shaft and joined together by bolts. A drive roller in a perforation forming machine featuring: