JPH0441116A - slitter stand - 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] This invention has almost no misalignment of the cutter without using a spacer, and can easily fix the cutter (blade set).
This relates to a slitter stand that can perform the work.

[Conventional technology]

Conventional types of slitter stands for fixing blades (round blades) of slitters for trimming both ends of a strip coil or dividing it into several pieces in the width direction are roughly divided into the following two types.

Figure 6 shows the first type of conventional slitter stand.
It is a front view showing an example. As shown in Figure 6, the conventional first
This type of slitter stand has a round blade 9 fitted onto the upper and lower arbor shafts 10, and an arbor shaft l.
In this method, the blade (round blade) 9 is positioned and fixed using a spacer 11 and a shim 12 that are fitted onto the outside of the blade.

Figure 7 shows the second type of conventional slitter stand.
It is a schematic front view showing an example. The second type of slitter stand uses hydraulic pressure 14 inside the arbor shaft 13 to inflate the outer shell of the arbor shaft 13 and cutter 15.
This is a hydraulic arbor type that fixes the cutter using frictional force with the holder 16.

[Problem to be solved by the invention]

The above two types of slitter stands each have the following problems.

(1) The first type of slitter stand ■ Spacer It is troublesome to handle the shims, and it takes too much effort to align the blades and assemble the blades.

■Position setting is difficult.

1211r2 type slitter stand - To utilize frictional force, a holder width that can accommodate the thrust force is required.

■ Due to the expansion of the arbor shaft, it shrinks in the axial direction and the distance between the blades becomes narrower.

Therefore, this invention was made to solve the above-mentioned problems, and it is easy to align the blade and assemble the blade.
[Means for Solving the Problems] In order to solve the above problems, the slitter stand of the present invention has a male screw on the outer peripheral surface. a pair of upper and lower arbor shafts each having a circular cross section and having a groove of a predetermined width cut out along the axial direction in the male screw; It consists of an annular knife holder and an annular lock nut each having a female screw of a predetermined width formed on a part of its inner peripheral surface, and an annular knife fixed to the outside of the knife holder. The female screw of the lock nut is loosely fitted into the groove of the arbor shaft, and in this state, the cutter holder and the lock nut are moved along the axial direction of the arbor shaft without rotation to align the cutter holder. Then, the cutter holder and the lock nut are rotated by a predetermined angle, the female threads of the cutter holder and the lock nut are screwed together with the male threads of the arbor shaft, and the cutter holder is tightened by the lock nut. The feature is that the holder is fixed to the arbor shaft.

Next, the present invention will be explained with reference to the drawings.

Figure 1 is a front view showing one embodiment of this invention, Figure 2 (
a) and (b) are cross-sectional views taken along the line A-A in Fig. 1, and Fig. 2 (a> shows the alignment, and (b) shows the blade fixed state. Fig. 3 is a partially enlarged view of Fig. 1). FIG. 4 is a perspective exploded view illustrating the arbor shaft, cutter holder, and lock nut, and FIG. 5 is a side view showing the lock nut rotating jig.

As shown in the drawings, the slitter stand 1 of the present invention includes a pair of upper and lower arbor shafts 2 each having a circular cross section, an annular cutter holder 3 fitted onto the arbor shaft 2, and an annular lock nut fitted onto the arbor shaft 2. 4 and
The blade holder 3 has an annular blade 5 fixed to the outside thereof.

In the drawings, 6 is a motor, 7 is a herbal gear, and 8 is a jig for rotating a lock nut.

A male thread 2a is formed on the outer peripheral surface of the arbor shaft 2. The male screw 2a has a groove 2 along the axial direction.
b is cut out. The grooves 2b are cut out at two locations at predetermined intervals in the circumferential direction of the arbor shaft 2.

A female screw 3 of a predetermined width is provided on a part of the inner peripheral surface of the blade holder 3.
a are formed at two locations at predetermined intervals in the circumferential direction.

A female screw 4 of a predetermined width is provided on a part of the inner peripheral surface of the lock nut 4.
L is formed at two locations at a predetermined interval in the circumferential direction. The female screws 3a and 4a protrude inward, and their protruding height is smaller than the depth of the groove 2b, and their width is smaller than the depth of the groove 2b.
As a result, the cutter holder 3 and lock nut 4 fitted onto the arbor shaft 2 have female screws 3a and 4a that fit into the groove 2 of the arbor shaft.
a, and in this state, the cutter holder 3 and lock nut 4 are movable along the axial direction of the arbor shaft 2 without rotation.

On the other hand, when the cutter holder 3 is rotated by a predetermined angle from the loosely fitted state, the male thread 2a of the arbor shaft 2 and the female threads 3a and 4a of the cutter holder 3 and lock nut 4 are screwed together. Further, by tightening only the lock nut 4 with a lock nut rotation jig 8 which can be freely fitted into the lock nut 4, the cutter holder 3 is fixed while being screwed onto the arbor shaft 2. The jig 8 is provided with a protrusion 8a, and tightening is performed by fitting the protrusion 8a into a groove (not shown) provided in the lock nut 4 and rotating it in a predetermined direction.

Note that the groove 2b of the arbor shaft 2 only needs to be cut out in at least one place. In this case, the female screws 3a and 4a of the knife holder 3 and lock nut 4 are also formed at one location.

[Effect]

As shown in FIG. 1, four cutter holders 3 and four lock nuts 4 are fitted onto the pair of upper and lower arbor shafts 2. That is, the cutter holder 3, which is integrally fixed to the arbor shaft 2 with the cutter 5, and the lock nut 4 are inserted into the groove 2b.
and female screws 3a, 4a are loosely fitted and moved to their respective predetermined positions.

Next, the blade holder 3 is rotated, and the male screw 2a and the female screw 3a are screwed together and engaged. After aligning the blade in this way, fit the jig 8 into the lock nut 4, lock the protrusion 8a into the lock nut's groove (not shown), and rotate and tighten the lock nut 4 with the jig 8. .

Thereby, the blade holder 3 is securely fixed at a predetermined position on the arbor shaft 2.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the following useful effects.

+11 Since the cutter holder and lock nut can be moved to a predetermined position without rotating, the cutter can be quickly aligned.

(2) The blade can be fixed accurately and reliably by screwing the arbor shaft and the blade holder together and tightening with a lock nut.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of this invention, Figure 2 (
a) and (b) are cross-sectional views taken along the line A-A in Fig. 1, and Fig. 2 (
a) shows alignment, (b) shows the blade fixed state, 3rd
The figure is a partially enlarged view of Fig. 1, Fig. 4 is a perspective exploded view illustrating the arbor shaft, cutter holder, and lock nut, and Fig. 5 is a side view showing the lock nut rotating jig.
The figure is a front view showing an example of the first type of conventional slitter stand, and FIG.
It is a schematic front view showing an example of the type. In the drawings: 1 - Slitter stand 2 - Arbor shaft 2a - Male screw 2b - One groove 3 Cutler holder 3a - One female screw 4 - Lock nut 4a - Female screw 5 - Cutler 6 - Motor 7 Hercal gear 8 - Jig 8a ...-Protrusion 9- Round blade lO-・Arbor shaft 11-Spacer 12・-Shim 13-・Arbor shaft hydraulic pressure-・Cutter 16・-・・・-Holder

Claims (1)

[Scope of Claims] 1. A pair of upper and lower arbor shafts each having a circular cross section and having a male screw formed on the outer peripheral surface and a groove of a predetermined width cut out along the axial direction in the male screw; an annular cutter holder and an annular lock nut each having a female screw of a predetermined width formed on a part of its inner peripheral surface that can be loosely fitted into the groove; and an annular lock nut fixed to the outside of the cutter holder. The blade holder and the female screw of the lock nut are loosely fitted into the groove of the arbor shaft, and in this state, the blade holder and the lock nut are rotated along the axial direction of the arbor shaft. Then, the blade holder and the lock nut are rotated by a predetermined angle to screw the female threads of the blade holder and the lock nut into the male threads of the arbor shaft. The slitter stand is characterized in that the cutter holder is fixed to the arbor shaft by tightening the cutter holder with the lock nut. 2. The groove is cut out at two places at a predetermined interval in the circumferential direction of the arbor shaft, and the cutter holder and the lock nut are cut out at a predetermined interval in the circumferential direction at a position where the female screw can fit loosely into the groove. Claim 1 is formed in two places.
The slitter stand listed.