JPH0674223U - Slitter shaft support mechanism - Google Patents

Abstract

(57) [Summary] [Object] To provide a slitter shaft support mechanism capable of easily and quickly exchanging a ring-shaped blade and improving the mounting accuracy of the slitter shaft. [Structure] The slitter shaft 2 is provided with a shaft body 6 in which screw holes 20 and 22 extending in the axial direction are formed at both ends, and a ring-shaped blade is fixed to the outer peripheral portion, and a through hole extending in the axial direction in the central portion. In addition, a fitting portion that fits in the axial direction is formed at one end on one of both end portions of the shaft body 6, and a pair of fitting portions are provided by fitting the fitting portions to the respective end portions of the shaft body 6. Shaft members 8 and 10,
A pair of bolt members 12, 1 for fixing the shaft body 6 and the shaft members 8 and 10 by inserting the through holes of the shaft members and screwing the tips of the shaft members into the screw holes of the shaft body 6.
4, and support portions 34 and 36 for supporting the outer peripheral portions of the shaft members 8 and 10 rotatably around the axis are respectively provided. The support portion 34 supports the shaft member 8 so as to be movable in the axial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support mechanism for a slitter shaft that allows easy exchange of a ring-shaped blade.

[0002]

[Prior art and its problems]

 FIG. 2 shows a slitter device in which a conventional slitter shaft support mechanism is used. The lower slitter shaft (hereinafter referred to as “lower shaft”) 2 and the upper slitter shaft (hereinafter referred to as “hereinafter referred to as“ slit shaft ”) shown therein. A conventional slitter shaft support mechanism is used to rotatably support the upper shaft. Since the structure of the portion supporting the upper shaft 4 is the same as the structure of the portion supporting the lower shaft 2, the description thereof will be omitted.

The lower shaft 2 shown in FIG. 1 includes a shaft body 6 having a substantially cylindrical shape, a pair of shaft members 8 and 10 provided on both end sides thereof, and the shaft members 8 and 10 connected to the shaft body 6. It is composed of a pair of bolt members 12 and 14 to be connected.

Both ends of the shaft body 6 are formed as tapered portions 16 and 18 that gradually decrease in diameter toward the outside, and a screw hole 20 extending in the axial direction is provided at the center of each end. 22 are formed respectively. Further, a plurality of ring-shaped blades for cutting the sheet-shaped material are attached and fixed to the outer peripheral portion of the shaft body 6 at predetermined intervals (not shown). The ring-shaped blade may be fixed to the shaft body 6 via a spacer, or a so-called spacerless method in which the ring-shaped blade is attached to a hydraulic fixing flange integrally fixed to the outer peripheral portion. But it is okay.

The shaft member 8 is a substantially cylindrical member having a through hole 24 formed in the center thereof, and a step portion 26 is formed on the outer peripheral portion on one end side thereof. A fitting portion 30 having a tapered hole 28 formed inside is formed at one end of the shaft member 8, and the tapered hole 28 is shaped to fit into the tapered portion 16 of the shaft body 6. . At the other end of the shaft member 8, an engaging portion 32 formed by expanding the diameter of the through hole 24 is formed. The shaft member 10 is exactly the same as the shaft member 8.

The bolt member 12 is shaped so that the head portion 12 a of the bolt member 12 is engaged with the engaging portion 32, and when the shaft member 8 has the fitting portion 30 fitted in the taper portion 16, The shaft member 8 is inserted into the through hole 24 from the other end side, and the tip portion (male screw portion) 12b is screwed into the screw hole 20 to fix the shaft member 8 and the shaft body 6 to each other. There is. The bolt member 14 is exactly the same as the bolt member 12.

In the lower shaft 2, the shaft member 8 is rotatably supported by the support portion 34, and the shaft member 10 is rotatably supported by the support portion 36. The support portion 34 is fixedly provided on the machine body of the slitter device, and includes a base portion 38, a plurality of bearings 40, and a plurality of spacers 42. A nut member 44 having a rotation hole 44a opening to the end face side is provided at a part of the outer peripheral portion of the shaft member 8, and the inner diameter portion thereof is screwed onto the outer peripheral portion of the shaft member 8. By tightening the nut member 44, the bearings 40 and the spacers 42 can be fixed to the outer peripheral portion of the shaft member 8. Oil seals 46 and 48 are provided on both ends of the shaft member 8.

The structure of the support portion 36 is the same as that of the support portion 34. The upper shaft 4 is provided above the lower shaft 2 via spacer portions 52 and 54 that maintain an axial distance, and is rotatably supported by the same supporting mechanism as the lower shaft 2.

In the slitter device using the conventional slitter shaft support mechanism as described above, when replacing the ring-shaped blade supported by the slitter shafts 2 and 4, the upper shaft 4 and the lower shaft 2 are The shaft body and the shaft member are removed from the slitter device in the assembled state, and then the bolt member is removed from each of the shafts 2 and 4 to release the fixation between the shaft body and the shaft member. After that, the ring-shaped blade mounted on the outer peripheral portion of the shaft body is extracted and replaced with another ring-shaped blade, and the shafts 2 and 4 are assembled again and incorporated into the slitter device.

In such a slitter device using the conventional slitter shaft support mechanism, there are many places for disassembling and assembling in order to replace the ring-shaped blade, so that labor and work time required for the ring-shaped blade replacement work are increased. It was a great deal. In addition, since there are many places to disassemble and assemble, it is difficult to maintain accuracy.

The present invention has been made in view of the above circumstances, and provides a slitter shaft support mechanism capable of easily and quickly exchanging a ring-shaped blade and improving the accuracy of mounting a slitter shaft. The purpose is to

[0012]

[Means for Solving the Problems]

 The present invention is a slitter shaft support mechanism for rotatably supporting a slitter shaft having a ring-shaped blade fixed to the outer peripheral portion, wherein the slitter shaft has screw holes extending in the axial direction formed at both end portions of the outer peripheral portion. A shaft main body to which the ring-shaped blade is fixed and a through hole extending in the axial direction at the center are formed, and a fitting portion axially fitted to one of both ends of the shaft main body is provided at one end. A pair of shaft members that are formed and are respectively provided by fitting the fitting portions to the respective end portions of the shaft body, and are inserted into the through holes of the respective shaft members, and the tip portions of the shaft members are attached to the shaft portion. It is composed of a pair of bolt members that are screwed into the screw holes of the main body and fix the shaft main body and the shaft member, and the outer peripheral portion of each shaft member is rotatable around the axis. A pair of supporting portions for supporting is provided respectively, and at least one of the pair of supporting portions movably supports the shaft member in its axial direction, and a movable distance of the shaft member with respect to the supporting portion. Is equal to or more than the sum of the lengths of the overlapping portions of the end portions of the shaft body and the fitting portions of the pair of shaft members in the axial direction.

[0013]

[Action]

 In the slitter shaft support mechanism having the above structure, the shaft body can be easily moved by removing the pair of bolt members that fix the shaft body and the shaft member and moving one of the shaft members in the axial direction by a predetermined amount. To be removed. Then, after replacing the ring-shaped blade with another one, the shaft member is moved to the side closer to the shaft body so that each fitting portion fits into each end portion of the shaft body, and then a pair of When the bolt member is attached, the work of exchanging the ring-shaped blade is completed.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The same components as those shown in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted. The main difference between the slitter device shown in FIG. 1 and the slitter device shown in FIG. 2 is the structure of the support portion that supports the shaft member of the slitter shaft. That is, in FIG. 1, in the support portion 34 that supports the shaft member 8 of the lower shaft 2, a space portion 60 that allows the shaft member 8 to move in the axial direction is formed. It can be moved in the direction by the distance L1.

Further, the taper portions 16 and 18 of the shaft body 6 of the lower shaft 2 are formed to have a small length in the axial direction, and correspondingly, the axial lines of the fitting portions 30 and 31 of the shaft members 8 and 10 are formed. The length in the direction is also small, and the overlapping lengths of the tapered portions 16 and 18 and the fitting portions 30 and 31 in the axial direction are L2 and L3, respectively. The movable distance L1 of the nut member 44 is set to be equal to or more than the sum of the lengths L2 and L3. The same applies to the support portion of the upper shaft 4.

In the slitter device shown in FIG. 1, when replacing the lower shaft 2, the shaft body 6 is held so as not to fall downward, and then the shaft body 6 and the shaft members 8 and 10 are fixed. By removing the bolt members 12 and 14 from the end side and moving the shaft member 8 in the axial direction (right direction in the drawing), the shaft body 6 is easily separated from the shaft members 8 and 10 and removed.

Then, after replacing the ring-shaped blade mounted and fixed on the outer peripheral portion of the shaft body 6 with another one, the shaft members 8 and 10 are moved to the side approaching both ends of the shaft body 6, respectively. When the fitting portions 30 and 31 of the shaft members 8 and 10 are fitted into the taper portions 16 and 18, and then the bolt members 12 and 14 are attached, the ring-shaped blade replacement work is completed. The ring-shaped blade of the upper shaft 4 is replaced in the same manner. Therefore, it is not necessary to remove and install the slitter shaft in the slitter device in the state where the slitter shaft is assembled as in the past, and the replacement work of the ring-shaped blade is easy and quick. Since it is possible to reduce the number of places to perform, it is possible to easily maintain accuracy.

[0018]

[Effect of device]

 As described above, according to the slitter shaft support mechanism of the present invention, the shaft main body can be easily mounted only by the attachment / detachment operation of the pair of bolt members and the movement operation of the one shaft member for the predetermined distance in the axial direction. Since the ring-shaped blade can be removed and replaced, the labor required to replace the ring-shaped blade can be reduced, and the work time can be shortened to improve workability.

[Brief description of drawings]

FIG. 1 is a view showing a slitter shaft support mechanism according to an embodiment of the present invention.

FIG. 2 is a view showing an example of a conventional slitter shaft support mechanism.

[Explanation of symbols]

 2,4 Slitter shaft 6 Shaft body 8,10 Shaft member 12,14 Bolt member 34,36 Support part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ichiro Emajo Ichiro Emajo, Kobe, Gifu Prefecture, Kobe, Osaka 1528, Nakarai, Yokoi, Mitsubishi Materials Corporation Gifu Manufacturing Co., Ltd. (72) Takao Yajima, Kobe, Japan Yokoi character Nakashinda 1528 Mitsubishi Materials Corporation Gifu Works

Claims (1)

[Scope of utility model registration request] 1. A slitter shaft support mechanism for rotatably supporting a slitter shaft having a ring-shaped blade fixed to the outer periphery thereof, wherein the slitter shaft has screw holes extending in the axial direction formed at both ends thereof. A shaft main body to which the ring-shaped cutting tool is fixed, a through hole extending in the axial direction through the central portion, and a fitting portion axially fitted to one of both ends of the shaft main body at one end. A pair of shaft members that are formed and are respectively provided by fitting the fitting portions to the respective end portions of the shaft main body, and are inserted into the through holes of the respective shaft members, and the tip ends of the shaft main body are inserted into the shaft main body. Of a pair of bolt members for fixing the shaft body and the shaft member to each other by screwing them into the screw holes of A pair of supporting parts to be held are respectively provided, and at least one of the pair of supporting parts movably supports the shaft member in the axial direction thereof, and a movable distance of the shaft member with respect to the supporting part is A slitter shaft support mechanism, wherein the length of the slitter shaft is greater than or equal to the sum of the lengths of the overlapping portions of the shaft body and the fitting portions of the pair of shaft members in the axial direction.