JP4230603B2 - Touch roller mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an attachment device for attaching a touch roller that presses a winding roll wound around a winding shaft in a slitter to a pair of rotatable support arms via a rotating shaft.
[0002]
[Prior art]
The slitter is a device that vertically slits a wide web such as paper or plastic film and takes out the slit narrow web as a winding roll on a winding shaft. 3 and 4 are schematic views of the slitter 101 provided with the touch roller 11. That is, a supply roller 103 for a wide web 102 made of a plastic film, a cutter 104 for slitting the wide web 102 in the vertical direction, and upper and lower take-up rollers for winding the narrow web 105 slit by the cutter 104 106. The wide web 102 and the narrow web 105 pass through these members and a plurality of guide rollers. In this slitter, the cutter 104 slits the wide web 102 into four equal width narrow webs 105. The slit narrow web 105 is divided into upper and lower stages by a guide roller 107, and is wound around the take-up roll 20 by two at intervals. Thus, the structure which distributes to an up-and-down stage and winds up with a space | interval is performed conventionally, since the edge parts of the winding roll 20 are wound up without interfering.
[0003]
At this time, the touch roller 11 is brought into contact with the take-up roll 20 during take-up so that the take-up roll 20 has an appropriate roll-up hardness and to prevent excessive air from being caught between the web layers. To take up. The touch roller 11 applies contact pressure to the take-up roll 20 by adjusting its own weight or load, and the width of the touch roller 11 is taken up so that the width direction of the take-up roll 20 can be uniformly pressed. A roll slightly longer than the width of the roll 20 is used. Therefore, the touch roller 11 is usually used by replacing it with one corresponding to the product width every time the product is different.
[0004]
As a method for attaching the touch roller 11, there are usually many configurations in which the touch roller 11 is attached to the tip of a support arm that rotates about a support shaft via rotation shafts provided at both ends of the touch roller 11.
As a specific method, for example, as shown in FIG. 5, the rotary shaft 12 of the touch roller 11 is inserted into a through-hole 108 provided in the support arm 14 and fixed with the screw 109. In many cases, the one attached to the support arm 14 by fastening with a screw 109 or the like is used to attach the touch roller 11 using a tool or the like every time the touch roller 11 is replaced. The touch roller 11 disassembled from the support arm 14 and replaced again is assembled and used with a tool. In this method, since the disassembly and assembly of the touch roller 11 are complicated operations, the touch roller 11 and the support arm 14 are usually replaced and used together as an integrated unit.
[0005]
In order to solve the above-described complexity, as shown in FIG. 6, the end of the rotary shaft 12 is inserted into a through hole 108 provided in the support arm 14 and the cylinder fitted to the rotary shaft 12. There is also disclosed a touch roller mounting device that can be mounted with a single touch by fitting the knob 110 together with the compression spring 111 into the through hole 108 (Japanese Utility Model Publication No. 4-44518). Usually, there are uneven thickness in the width direction and there is often a difference in height in the width direction of the take-up roll. However, the touch roller 11 attached by pressing with the compression spring 111 is fixed between the touch roller 11 and the support arm 14. When the applied force is insufficient and the winding roll has a height difference, the mounting state of the rotating shaft 12 and the support arm 14 of the touch roller 11 is loosened, and the rotating shaft 12 of the touch roller 11 is pressed in parallel with the winding roller 106. It was a problem that it is difficult.
[0006]
[Problems to be solved by the invention]
In view of the above circumstances, the present invention makes it easy to attach and detach the touch roller to and from the support arm, and can firmly fix the touch roller, and the rotation axis of the touch roller and the take-up roller are kept parallel even if the take-up roll has uneven winding An object of the present invention is to provide a touch roller mounting device that can be pressed in this manner.
[0007]
[Means for Solving the Problems]
As a means for solving the above-described problems, the present invention provides an attachment device for attaching a touch roller that presses a winding roll wound around a winding shaft in a slitter to a pair of rotatable support arms via a rotating shaft. A male screw is engraved at the end of the rotating shaft and the outer periphery engraved with the female screw can be screwed with a nut having a circular convex portion, and a flat portion having a two-sided chamfer shape is provided on the roller side in the axial direction of the male screw, The support arm is provided with an opening having a parallel plane in which the flat portion having the two chamfered shape can be fitted, and the outer periphery of the convex portion of the female screw is fitted around the opening on the outer surface of the pair of support arms. A circular recess that can be mated, a flat portion of a two-chamfered shape of the rotating shaft of the touch roller is fitted into the opening of the support arm, the female screw is screwed to the male screw at the end of the rotating shaft, and the female screw is circular The outer periphery of the convex portion to provide a mounting device of a touch roller, characterized in that to fix the rotary shaft fitted in the circular recess, to solve the above problems.
In addition, a fixed shaft having both ends fixed to both support arms can be attached at an intermediate position between the attachment position of the touch roller of the pair of support arms and the rotation fulcrum of the support arm.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan sectional view showing an outline of a touch roller mounting device 10. The touch roller 11 is a roller having bearings 13 at both ends of a rotating shaft 12 and rotating around the rotating shaft 12 by the bearing 13. Thus, both end portions of the rotating shaft 12 are fitted to the tip portions of the pair of support arms 14, and the male screw 15 engraved on the end portion of the rotating shaft 12 is attached by a nut 17 in which a female screw 16 is engraved. . The support arm 14 is rotatably attached to a support shaft 19 by an attachment member 18 provided at the base end portion of the support arm 14, and the touch roller 11 is disposed on a take-up roll 20 shown in FIG. Thus, the take-up roll 20 is pressed.
[0009]
FIG. 2 shows the details of the mounting apparatus. A male screw 15 is engraved at the end of the rotary shaft 12 of the touch roller 11, and a roller side of the male screw 15 engraved on the rotary shaft 12 is shown on the roller side. A flat portion 21 having a two-chamfered shape is provided. The flat portion 21 is formed such that a pair of planes are parallel with a constant width.
[0010]
On the other hand, a nut 17 engraved with a female screw 16 that can be engaged with a male screw 15 provided at the end of the rotary shaft 12 is prepared, and is provided at the end of the rotary shaft 12 of the touch roller 11 fitted to the tip of the support arm 14. The nut 17 is assembled and tightened or loosened by hand so that it can be easily attached and detached. It is important that the nut 17 has a convex portion 22 having a circular outer periphery, and the nut 17 can be fitted into a circular concave portion 23 provided in the support arm 14 described later. A large diameter portion 24 larger in diameter than the circular convex portion 22 is provided on the top side of the nut 17, and a friction preventing groove is provided on the outer periphery of the large diameter portion 24 so that it can be easily tightened or loosened by hand. Is preferable. The shape of the large diameter portion 24 can be any shape such as a circle or a square.
[0011]
The support arm 14 is formed of a plate-like body, and an opening 25 having a parallel plane into which the flat part 21 having the two chamfered shapes can be fitted is provided at the tip. When the flat portion 21 having the two-chamfered shape of the rotary shaft 12 of the touch roller 11 is fitted into the opening 25, the male screw 15 provided at the end of the rotary shaft 12 protrudes outward and is tightened with the nut 17. It can be fixed to the support arm 14. It is preferable that the parallel plane of the opening 25 of the support arm 14 and the parallel plane of the flat portion 21 of the touch roller 11 are closely contacted with each other with a minimum clearance and are fitted without looseness.
[0012]
A circular recess 23 is bent around the opening 25 located on the outer surface of the pair of support arms 14, and the outer periphery of the circular protrusion 22 of the female screw 16 and the circular recess 23 are fitted without a gap. It is provided as possible.
[0013]
A base end portion of the support arm 14 is attached to a support shaft 19, and a distal end portion is rotatable about the support shaft 19. Therefore, as the winding roll 20 is thickened, the touch roller 11 that comes into contact with the winding roll 20 rotates upward along with the operation of the rotatable support arm 14, and the winding roll 20 is always loaded with a constant load due to its own weight. Pressing. The width of the touch roller 11 is slightly longer than the width of the winding roll 20 so that the width direction of the winding roll 20 can be uniformly pressed. Therefore, it is preferable that the touch roller 11 is used by being replaced with one corresponding to the product width every time the product is different.
[0014]
Further, a fixed shaft 26 having both ends fixed to both support arms 14 is attached at an intermediate position between the attachment position of the touch roller 11 at the distal end portion of the pair of support arms 14 and the attachment position of the proximal end portion to the support shaft 19. Is preferred. The winding roll 20 is usually uneven in thickness in the width direction, and there are many differences in height in the width direction of the winding roll 20, and if the length of the support arm 14 is long, the support arm 14 is attached to the rotating shaft. The touch roller 11 cannot be kept horizontal due to a slight clearance such as a mounting device between the member 18 and the left and right rotating shafts 12 of the touch roller 11 and the support arm 14, and the touch roller 11 is pressed in parallel with the take-up roll 20. Difficult to do. Therefore, by attaching the fixed shaft 26, the touch roller 11 can be prevented from inclining and pressed as horizontally as possible.
[0015]
Next, the operation will be described. A flat portion 21 having a two-sided shape of the rotary shaft 12 of the touch roller 11 is fitted into the opening 25 of the support arm 14, and the female screw 16 is screwed to the male screw 15 at the end of the rotary shaft 12 and the female screw 16 has a circular shape. The rotating shaft 12 is fixed by fitting the outer periphery of the convex portion 22 into the circular concave portion 23.
Since the mounting device is configured as described above, the opening width of the opening 25 is smaller than the diameter of the end of the rotating shaft 12 of the touch roller 11, so that only the flat portion 21 provided on the rotating shaft 12 is fitted. It is possible, and there is no room for mistakes in mounting, etc., and it is excellent in workability.
Further, the rotary shaft 12 of the touch roller 11 is always fixed at a fixed position of the support arm 14 by fitting the outer periphery of the circular convex portion 22 of the female screw 16 to the circular concave portion 23 and fixing the rotary shaft 12. Therefore, it is not necessary to spend time on the centering.
Furthermore, since the touch roller 11 can be firmly attached to the support arm 14 by manually tightening the nut 17 having the large-diameter portion 24, it is not necessary to use a tool or the like, so that the workability is excellent. Compared with a method of pressing with a spring, there is no room for loosening at the connecting portion between the touch roller 11 and the support arm 14, and the touch roller 11 corresponds to the occurrence of a height difference in the width direction of the winding roll 20. Can be pressed without inconvenience such as tilting.
[0016]
【The invention's effect】
As described above, according to the present invention, the touch roller can be easily attached to and detached from the support arm without using a tool, and can be firmly and firmly fixed. This is a touch roller mounting device that can be pressed so that the take-up rollers are kept parallel.
[Brief description of the drawings]
FIG. 1 is a plan sectional view showing an outline of a touch roller mounting apparatus according to the present invention.
FIG. 2 is an explanatory diagram for explaining details of the attachment device according to FIG. 1;
FIG. 3 is an explanatory diagram showing an outline of a slitter.
FIG. 4 is an explanatory diagram showing a state of the touch roller according to FIG. 3;
FIG. 5 is an explanatory diagram for explaining a mounting state of a conventional touch roller.
FIG. 6 is an explanatory diagram for explaining a mounting state of another conventional touch roller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Touch roller mounting apparatus 11 Touch roller 12 Rotating shaft 13 Bearing 14 Support arm 15 Male screw 16 Female screw 17 Nut 18 Support arm mounting member 19 Spindle 20 Winding roll 21 Flat part 22 Convex part 23 Concave part 24 Large diameter part 25 Opening part 26 Fixed shaft

Claims (2)

In an attachment device for attaching a touch roller for holding a winding roll wound around a winding shaft in a slitter to a pair of rotatable support arms via a rotating shaft,
A male screw is engraved at the end of the rotary shaft, and the outer periphery of the female screw engraved can be screwed with a nut having a circular convex portion, and a flat portion having a two-chamfered shape is provided on the roller side in the axial direction of the male screw. The support arm is provided with an opening having a parallel flat surface into which the two chamfered flat part can be fitted, and the outer periphery of the convex part of the female screw is formed around the opening on the outer surface of the pair of support arms. It has a circular recess that can be fitted,
The flat part of the chamfered shape of the rotating shaft of the touch roller is fitted into the opening of the support arm, the female screw is screwed to the male screw at the end of the rotating shaft, and the outer periphery of the circular convex portion of the female screw is formed into the circular concave portion. A touch roller mounting device that is fitted to fix a rotating shaft. 2. The touch roller according to claim 1, wherein a fixed shaft having both ends fixed to both support arms is attached at an intermediate position between the attachment position of the touch roller of the pair of support arms and the rotation fulcrum of the support arm. Mounting device.

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