JPH0551524U - Cutter fine adjustment spacer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a spacer that can correct the tilting of the slitter cutter and finely adjust the interval of several μm with high accuracy. [Structure] A spacer, which is mounted on a cutter shaft with a space, and has an annular spacer body 2, a screw 3 screwed into the spacer body 2 in a radial direction of a cutter shaft 4, and a screw 3 which is externally fitted to a shaft portion of the screw 3. The wedge-shaped piece 6 that moves along the screw axis as the blade rotates, and the piston 1 that comes in and out of the spacer body in the cutter axis direction from the side surface of the spacer body while contacting the inclined surface of the piece 6. It is characterized in that it is placed in the place. [Effect] It is possible to correct the tilt of the cutter and finely adjust the interval with high accuracy of about several μm. Further, the working time can be shortened from 1.5 to 2 hours to 0.5 to 1 hour, and the work can be automated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an annular spacer that is fitted onto the cutter shaft of a slitter.

[0002]

[Prior Art]

 A slitter that divides the strip into multiple strips in the width direction generally adjusts the spacing between the multiple cutters that are fitted onto the cutter shaft using various annular spacers, as appropriate, according to the specified processing width and number of strips. To do.

Fine adjustment using shims such as ultra-thin paper or metal foil is used to prevent the cutters from collapsing due to dimensional errors when manufacturing the cutters and annular spacers, and the gaps between the cutters being inadequate. Is going. However, in the conventional technique as described above, even if the working width is slightly changed, it is necessary to replace the spacer or the like. Further, the fine adjustment work using a shim such as the correction of the tilt of the cutter requires the skill of the operator and sufficient adjustment time, and it is extremely difficult to perform high precision blade assembly.

From such a background, in order to simplify the adjustment at the time of using the spacer, proposals regarding the structure of the spacer have been made so far. For example, a spacer having a structure in which a pair of spacer frames are screwed in the axial direction of the cutter with a plurality of screws for adjusting the spacing and which is divided into two by using a hinge is proposed in Japanese Utility Model Publication No. 57-177618. Has been done.

[0005]

[Problems to be solved by the device]

 By using the above spacers, it is possible to correct the cutter spacing and also to change the cutter spacing without removing the cutter and other spacers.

However, with the above-mentioned method, it is extremely difficult to correct the tilt angle of the cutter and adjust the interval of about several μm, and it has not yet been possible to sufficiently simplify the work of the blade assembly work and improve the accuracy. .. In view of the above, the present invention has an object to provide a spacer that can correct the tilt of the cutter and finely adjust the interval of several μm with high accuracy and in a short time.

[0007]

[Means for Solving the Problems]

 The present invention was obtained as a result of examining various aspects of how to accurately correct the tilt of the cutter and finely adjust the interval of several μm, and the gist of the invention is that it can be moved by a screw shaft. This spacer is equipped with a fine adjustment mechanism that allows the piston axial movement to be adjusted minutely by a relatively large rotation of the screw shaft by moving a wedge-shaped piece in and out.

[0008]

【Example】

 The present invention will be described below with reference to the drawings. A schematic diagram of the present invention is shown in FIG. FIG. 2 shows an AA cross section when the present invention is set on the cutter shaft 4. The fine adjustment spacer of the present invention is used by being sandwiched between the respective cutters 5 fitted onto the cutter shaft 4 of the slitter. The fine adjustment spacer includes an annular spacer main body 2, a screw 3 screwed into the spacer main body 2 in the radial direction of the cutter shaft 4, and an external fitting on the shaft portion of the screw 3, and the screw shaft rotates as the screw 3 rotates. It is composed of a wedge-shaped piece 6 that moves along with, and a piston 1 that contacts the sloped surface of the piece 6 and that moves in and out in the cutter axial direction from the side surface of the spacer body.

By rotating the screw shaft 3, the piston 1 moves in the axial direction at a ratio of the gradient with which the piston 1 contacts, and the interval between the cutters 5 can be finely adjusted. When the screw shaft 3 is rotated in the opposite direction to the above, the spring 6 returns the bridge 6 to its original position. Further, even when the cutter 5 is tilted by providing the fine adjustment mechanism sections at three or four locations in the circumferential direction of the spacer body 2, the tilt is corrected by operating each fine adjustment mechanism section. Can be done easily.

FIG. 3 illustrates an application example of the present invention based on an example in which the conventional type spacer 8 and the spacer 9 of the present invention are used together. The spacer 8 and the cutter 5 are set in order from the driving side. The fine adjustment spacer 9 according to the present invention is attached to the shaded portion in this figure. This spacer 9 does not necessarily have to be placed at all cutter positions. Upper and lower cutters may be alternately inserted like the second to fifth cutters from the driving side, or if the slit width is narrow like the fifth to thirteenth cutters from the driving side, further intervals may be opened. After the spacer 8, the cutter 5, and the fine adjustment spacer 9 are attached to the cutter shaft, the screw shaft 3 is adjusted to adjust the gap between the cutters and correct the tilt of the cutter.

[0011]

[Effects of the Invention] The spacer of the present invention can correct the tilt of the cutter and finely adjust the gap by several μm without using shims such as ultra-thin paper or metal foil, and the correction amount can be quantitatively grasped. Since it can be done, the skill of the operator is not required, the cutter reassembling work time which was conventionally 1.5 to 2 hours can be shortened to 0.5 to 1 hour, and the slit quality can be greatly improved. .. It can be adjusted without changing the spacer when the machining width is changed by several mm. Since shims are not used, there is a possibility of automating the cutter replacement work.

[Brief description of drawings]

FIG. 1 is a schematic view of a fine adjustment spacer.

FIG. 2 is a sectional view of a fine adjustment spacer when set.

[Figure 3] Usage example of fine adjustment spacer

[Explanation of symbols]

 1 Piston 2 Spacer body 3 Screw 4 Cutter shaft 5 Cutter 6 Piece 7 Spring 8 Conventional type spacer 9 Fine adjustment spacer

Claims (1)

[Scope of utility model registration request] 1. A spacer interposed between cutters mounted on a cutter shaft with a space, the spacer body being an annular spacer body, and the spacer body being screwed in the spacer body in the radial direction of the cutter shaft. The screw (3) and a wedge-shaped piece (6) and an inclination of the piece (6) which are externally fitted to the shaft portion of the screw (3) and move along the screw axis as the screw (3) rotates. A spacer for fine adjustment of a cutter, which comprises a piston (1) coming into and out of a side surface of a spacer body in contact with a surface in the axial direction of the cutter, and arranging these at a plurality of positions of an annular spacer.