JPH0459554A - Offset roller device - Google Patents

Abstract

PURPOSE:To prevent a relative slip between a belt like sheet and slide members and to prevent damages to the contact surface of the belt like sheet by arranging plural slide members on the peripheral surface of roller bodies along the shaft directions of the roller bodies so as to be capable of advancing and retreating freely and winding the belt like sheet round the slide members. CONSTITUTION:In the case when a belt like sheet 1 is carried according to the rotations of a roller body 6, slide members 10 in contact with the belt like sheet 1 move in the shaft direction of the roller body 6 so that a relative sideway slip between the belt like sheet 1 and the slide members 10 is not caused. Accordingly, contact surfaces of the belt like sheet with the slide members can be prevented from being damaged. And the slide members 10 moved from one edge to the other edge of the roller body can be restored to their original positions by a restoring means such as a cam mechanism or springs, or in the case of having the roller body arranged in the vertical direction, or in its slant posture, the slide members can be restored in their original positions due to their dead weights.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an offset roller device, and more specifically,
The present invention relates to an offset roller device in which a belt-shaped sheet is wound around the outer circumferential surface of a roller body constituting the offset roller device obliquely with respect to the circumferential direction of the roller body.

``Prior Art'' Conventionally, an offset roller device is well known, which includes a rotatably supported roller body and a belt-shaped sheet is wound around the outer peripheral surface of the roller body diagonally with respect to the circumferential direction. 64-37306).

"Problems to be Solved by the Invention" However, in conventional offset roller devices, the belt-shaped sheet was simply wrapped diagonally around the outer peripheral surface of the roller body, so when the belt-shaped sheet was conveyed as the roller body rotated, In addition, the belt-shaped sheet sometimes skids in the axial direction on the outer circumferential surface of the roller body, and the contact surface of the belt-shaped sheet with the roller body is sometimes damaged.

In view of such circumstances, the present invention provides an offset roller device in which the contact surface of the belt-shaped sheet with the roller body is not damaged even when the belt-shaped sheet is conveyed diagonally around the outer peripheral surface of the roller body. It provides:

"Means for Solving the Problems" That is, the present invention provides an offset roller device comprising a rotatably supported roller body, and in which a band-shaped sheet is wound around the outer peripheral surface of the roller body diagonally with respect to the circumferential direction thereof. In the roller body, a plurality of slide members are provided on the outer circumferential surface of the roller body so as to be movable forward and backward along the axial direction of the roller body, and the belt-shaped sheet is wound around the slide members.

"Function" According to the above configuration, when the belt-shaped sheet is conveyed as the roller body rotates, the slide member that the belt-shaped sheet comes into contact with moves in the axial direction of the roller body, so that the belt-shaped sheet and the slide member There is no relative skidding during this period, and therefore the contact surface of the strip sheet with the sliding member can be prevented from being damaged.

The slide member that has been moved from one end of the roller body to the other by the belt-shaped sheet can be returned to its original position by a returning means such as a cam mechanism or a spring, or the roller body can be moved vertically or tilted. If the slide member is placed in the same position, it can be returned to its original position by the weight of the slide member.

``Example'' The present invention will be described below with reference to an illustrated example. In FIG. 1, a belt-shaped sheet 1 conveyed by a conveyance mechanism (not shown) has a carry-in portion 1a that is conveyed in a horizontal direction, and this carry-in portion 1a is , a first offset roller device 2 disposed horizontally and obliquely with respect to the conveyance direction of the carry-in portion 1a.
The first offset roller assembly M2 is wound around the first offset roller assembly M2 from above, and is pulled out horizontally from below the first offset roller assembly M2 diagonally rearward.

The drawn-out portion 1b of the strip sheet 1a drawn out from the first offset roller device 2 is arranged horizontally and obliquely to the conveying direction of the drawn-out portion 1b, and Wrap it around a second offset roller device 3 arranged parallel to the second offset roller device 3 from below, and then pull it out horizontally from above so as to be parallel to the carry-in portion 1a, and then carry out the drawn-out portion. It is a partial IC.

Since the first offset roller device 2 and the second offset roller device 3 have the same configuration, the configuration of only the first offset roller device 2 will be explained as shown in FIGS. 2 and 3. The first offset roller device 2 includes a rod 5 rotatably supported on a frame (not shown), and a roller body 6 fixed to the rod 5.

The roller main body 6 is provided with flange portions 6a at both ends thereof, and a plurality of grooves 7 along the axial direction of the roller main body 6 are formed in the circumferential direction on the outer periphery of both the flange portions 6a, as shown in FIG. The multi-grooves 7 are formed parallel to each other at equal intervals, and the cross-sectional shape of the multi-grooves 7 is arcuate, so that the opening thereof is narrower than the inner diameter portion. A slide member 10 is provided between the grooves 7 of both flange portions 6a so as to be movable forward and backward along the axial direction of the roller body 6.

Each of the slide members 10 includes a columnar portion 10a having a cross-sectional shape matching the cross-sectional shape of the groove 7, and a contact portion 10b having a substantially rectangular cross section that is integrally provided with the columnar portion and extends in the axial direction. By slidably fitting the columnar portion 10a into the groove 7, the columnar portion 10a is prevented from falling outward from the opening of the groove 7. The contact portions 10b are arranged to protrude outside the roller body 6 through the openings of the grooves 7, and the outer peripheral surface of the first offset roller device 2 is formed by each contact portion lOb. The belt-shaped sheet 1 is wrapped across the belt.

At both ends of the columnar portion 10a of each slide member 10,
As shown in FIG. 2, cam followers 11 are attached to each of them, and the cam followers 11 at both ends are respectively engaged with cam members 12 fixed to a frame (not shown). As shown in FIG. 4, each cam member 12 extends over the range where the strip sheet 1 is obliquely wound around the contact portion 10b, that is, from the 0 degree position shown by arrow A in FIG. 4 to the arrow B. The advancing cam surface 12a advances each slide member 10 as the strip sheet 1 advances in the axial direction over the 180 degree position shown, and the contact portion 10b extends over the range where the contact portion 10b is separated from the strip sheet 1, that is, the first It has a retraction cam surface 12b that returns each slide member 10 to its original retraction position from a position beyond 180 degrees as indicated by arrow B in Figure 4 to a position just before 0 degrees as indicated by arrow A. .

In the above configuration, the slide member 10 is returned to the retracted position at a position before 0 degrees indicated by arrow A by the retracting cam surface 12b. When this slide member 10 reaches the 0 degree position as the roller main body 6 rotates, the belt-shaped sheet 1 wound diagonally around the first offset roller device 2 is placed on the surface of the contact portion 10b of the slide member IO. come into contact.

As the rotation of the roller body 6 progresses from this state, the slide member 10 is advanced by the advancing cam surface 12a as the belt-shaped sheet 1 advances in the axial direction, so that the belt-shaped sheet l does not slide relative to the slide member 10. Instead, it moves forward in the axial direction of the first offset roller device 2.

When the slide member 10 is at the 180 degree position indicated by arrow B, the belt-shaped sheet 1 is moved to the contact portion Jo of the slide member 1o.
b, and in this state, the slide member 0 is retracted by the retracting cam surface 12b, and returned to the retracted position at the 0 degree position just before the strip sheet 1 comes into contact with the slide member lO. Ru. The above-described operation is then repeated.

In the above embodiment, the slide member 10 is moved forward and backward by the cam member 12, but the present invention is not limited to this. For example, the slide member 10 is urged in the backward direction by a spring and brought into contact with the strip sheet 1. When the slide member 10 is moved, the friction force moves the slide member 10 forward against the spring, and when the slide member 10 is separated from the strip sheet 1, the elastic force of the spring allows the slide member 10 to be retreated to the retreat position. In addition, when the offset roller device is inclined from the horizontal direction or arranged vertically and the belt-shaped sheet is wound diagonally from the bottom to the top, the above spring is omitted and the slide member 10 is moved back to the retreat position by its own weight. can be done.

"Effects of the Invention" As described above, according to the present invention, as the belt-shaped sheet is conveyed, the slide member in contact with the belt-shaped sheet is moved in the axial direction, thereby reducing the relative relationship between the belt-shaped sheet and the slide member. Since it is possible to prevent physical slippage, it is possible to obtain the effect that damage to the contact surface of the belt-shaped sheet can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
3 is a sectional view taken along line DI-II in FIG. 2, and FIG. 4 is a developed view of the offset roller device 2. 1... Band-shaped sheet 2.3... Offset roller device 6... Roller body 10... Slide member 12... Cam member

Claims (1)

[Scope of Claims] An offset roller device comprising a rotatably supported roller body and in which a belt-shaped sheet is wound around the outer circumferential surface of the roller body diagonally with respect to the circumferential direction of the roller body, the outer circumferential surface of the roller body An offset roller device characterized in that a plurality of slide members are provided so as to be movable forward and backward along the axial direction of the roller body, and the band-shaped sheet is wound around the slide members.