JPH06340358A - Winding device of rubber sheet - Google Patents

Abstract

PURPOSE:To make the cut of a rubber sheet and the fixing of a rubber sheet end to a core pipe simply performable and also a full reel and this core pipe smoothly selectable in an automatic manner. CONSTITUTION:This winding device is featured that two core pipes are rotatably installed at both ends of a rotary arm 1 making the central part a turning center and, after a rubber sheet is fully wound up on the core pipe 5 on one side, the rotary arm is made almost a half turn, cutting this rubber sheet 4 in space between both these core pipes, and then such a cycle as starting a winding motion to the core pipe 5 on the other is performed. Moreover, each of these core pipes 5 consists of such a material as being excellent in adhesion with the rubber sheet 4, and further there is provided such a turn sheave 3 that an initial winding angle of the rubber sheet 4 to the core pipes 5 is set to an acute angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber sheet take-up device equipped with an accumulator, and more particularly, to a sheet such as a rubber sheet, which is filled within a time when the accumulator can store the wire. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber sheet winding device capable of continuously and easily and automatically replacing a winding reel and a core tube.

[0002]

2. Description of the Related Art When continuously winding a sheet such as a rubber sheet around a core tube, in order to control the winding tension to an appropriate value, the sheet is cut, the full reel and the core tube are wound. An accumulator is usually used for the purpose of time adjustment such as replacement of the sheet, fixing the sheet end to the next core tube, and retaining and holding the sheet in the meantime.
As shown in FIG. 5, this accumulator has a stationary side sheave 31 which functions as a guide roll and is called a sheave.
And a moving side sheave 32 in which a similar sheave is movable. When the sheets are wound, the winding speed is controlled so that the moving side sheave 32 is positioned within the tension control range, and when the storage line is required, the moving side sheave 32 is fixed. It is moved in a direction away from 31, and in the meantime, the ends of the sheets and the like are fixed to the core tube, and the core tube and the full-roll reel are exchanged.

[0003]

[Problems to be Solved by the Invention]
In the case of continuously winding the sheets using a sheeter, in order to attach the sheet etc. at the beginning of winding to the core tube, usually the core tube itself is provided with a seat locking portion, or -Requires a separate means of securing the gut etc. to the core tube. In addition, when the full-roll reel and the core tube are exchanged after winding the sheets, the full-roll reel is prevented from reversing and the sheet winding is unwound to prevent the full-roll reel. -Le must always be of length. For this reason
A device for continuously and automatically winding the sheets by switching between the core and the core tube is complicated.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to cut a sheet and end a sheet on a core tube when continuously winding sheets. SUMMARY OF THE INVENTION It is an object of the present invention to provide a winding device for a rubber sheet which can be easily fixed and which can smoothly and automatically switch between a full-roll reel and a core tube.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a rubber sheet take-up device which can be rotated at both ends of a rotary arm whose center is the center of rotation. First and second core tubes are provided on the first core tube, the rubber sheet is fully wound on the first core tube, and then the rotary arm is rotated about half a turn to cut the rubber sheet between the two core tubes. And a winding device for performing a cycle of starting winding on the second core tube, wherein the core tube is made of a material having excellent adhesion to the rubber sheet, and the core sheet of the rubber sheet is attached to the core tube. It is characterized by having a turn sheave having an acute initial winding angle.

Further, the cutting position of the rubber sheet is characterized in that it is at least πr / 2 from the abutting end of the rubber sheet which is in circumferential contact with the core tube having a radius r.

Further, the core tube is detachably provided on a shaft equipped with a clutch having a reverse rotation preventing mechanism which is operated by a spring.

[0008]

The operation when the rubber sheet winding device is used as the above means will be described with reference to the accompanying drawings (FIGS. 1 to 4) and the reference numerals. In the place where the core tube 5 is set to the full-roll reel 6 (FIG. 1), the meshing teeth 1 of the drive side clutch plate 11 of the clutch mechanism 2
1a and the meshing teeth 23c of the collar portion 23b of the sleeve 23 are separated from each other. The sleeve 23 is pushed in the axial direction by the urging force of the spring 24, and the claw C1 of the collar portion 23a of the sleeve 23 is pressed.
And the claw C2 of the lid 21c mesh with each other (the reverse rotation preventing mechanism operates, FIG. 4A). Since the rotary shaft holder 21 is fixed to the rotary arm 1, the sleeve 23 is also fixed, and the rotary shaft 2 is spline-fitted with the sleeve 23.
2 is also fixed. Even if the position of the empty core tube 5 and the empty roll 6 is exchanged by rotating the rotary arm 1 a half turn in this state (FIG. 2), the full roll 6 is reversed and the rubber sheet is moved. It is possible to replace 4 without being loosened and to replace it with stability, remove the full-roll reel 6 and replace it with a new core tube 5. Next, the rubber sheet 4 and the PE tape 8 are cut by the auto cutter 7.
The remaining rubber sheet 4 on the core tube 5 side is likely to be in close contact with the core tube 5 and the distance (L) from the contact end P _{1 to the} auto cutter 7
Has a relationship of “πr / 2> L”, and thus easily adheres to the surface of the core tube 5 (FIG. 3 (B)). Drive side clutch plate 1 again
When the meshing tooth 11a of No. 1 is meshed with the meshing tooth 23c of the collar portion 23b of the sleeve 23, the claws C1 and C2 of the reverse rotation preventing mechanism are disengaged against the biasing force of the spring 24, and the rotary shaft 2
2 can be rotated (FIG. 4 (B). Further, the initial winding angle α is an acute angle (FIG. 2), and the adhesion between the rubber sheet 4 and the surface of the core tube 5 is increased, so that the winding is performed. It is possible to stabilize the fixing of the rubber sheet 4 and the core tube 5 at the start of taking the rubber sheet 4. The rubber sheet 4 is naturally attached to the surface of the core tube 5 mounted on the rotary shaft 22. After closely fixed, the next winding of the rubber sheet around the core tube 5 can be smoothly started.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a layout of the rubber sheet winding device according to the present invention when viewed from the side, showing a state in which the rubber sheet 4 is wound around the core tube 5 to form a fully wound reel. The rubber sheet take-up device has a rotating arm which rotates around the center O _1.
Arm 1, a core tube 5 rotatably attached to both ends of the rotary arm 1, and a clutch mechanism 2 with a reverse rotation preventing mechanism attached to each core tube 5 as described later (see FIG. 4A). )
And a turnout with a collar arranged at the lower part of the rotary arm 1.
It is composed of a hub 3 and an auto cutter 7 described later. This rubber sheet winding device is a turret type winding device so that the full winding reel 6 can be replaced with the core tube 5 within a time when the accumulator can store the wire.

The rubber sheet 4 is supplied from the above-mentioned accumulator (see FIG. 5) and wound around the core tube 5 through the turn sheave 3, and an example of the rubber sheet 4 is as follows. An EP rubber (ethylene propylene synthetic resin) rubber sheet having a thickness of 0.5 to 1.5 mm and a width of 35 mm is wound around a core tube (for example, PVC) 5. That is, the rubber sheet 4 is a sheet having excellent adhesion to the core tube 5 to some extent.
When the rubber sheet 4 is wound, a PE (polyethylene) tape for peeling is placed on the rubber sheet 4 immediately before the rubber sheet 4 enters the turn sheave 3 as shown in the figure. 8 are closely attached to each other so that they are overlapped and wound around the core tube 5.

FIG. 2 is a layout view of the winding apparatus for a rubber sheet according to the present invention as seen from the side, similar to FIG. 1, in which the rotating arm 1 is rotated a half turn (about 180 degrees). -The state immediately after exchanging the full-roll reel 6 which wound the grate 4 and the core tube 5 is shown. In this case, as shown in the figure, the turn sheave 3 is located below the rotation center O ₁ of the rotation arm 1 so that the initial winding angle α becomes an acute angle when the winding is started by replacing the core tube 5. To place. That is, when arranging the turn sheave 3 directly below the rotary arm 1, it is possible at a position where the core tube 5 and the turn sheave 3 do not collide when the rotary arm 1 rotates. As far as the turn sheave 3 is, the rotation center O ₁ of the rotation arm ₁
By setting the position close to, the starting end of the rubber sheet to be wound next can be aligned with the center of the core tube, and there is also an advantage that positioning at the time of cutting becomes easy. In addition, the rotation
The core tube on the side where the rubber sheet 4 is not wound from the rotation center O ₁ of the rotation arm ₁ unless the turn sheave 3 is arranged directly below the rotation center O ₁ of the rotation arm ₁ The initial winding angle α is made as small as possible so as to minimize the initial winding angle α to increase the adhesion between the core tube 5 and the rubber sheet 4 at the start of winding. That is, if the turn sheave 3 is arranged so that it can be moved up and down and left and right to some extent, the rubber sheet 4 and the core tube 5 at the start of winding can be adjusted.
The fixation with and can be made more stable.

FIG. 3A is a layout view of the take-up device for the rubber sheet in the same state as that shown in FIG. 2, in which the rubber sheet 4 and the PE tape 8 are cut by the auto cutter 7. The position is shown in FIG. 3 (B), the rubber sheet 4 and the auto cutter 7 are shown.
It is a partially expanded view of a part. The rubber sheet 4 (with PE tape 8) wound around the full-roll reel 6 is in the state shown in FIG.
The cutter 7 cuts the initial winding angle angle α in contact with the core tube 5 so that the angle α becomes an acute angle. In this case, the position of the auto-cutter 7 is such that the radius of the core tube 5 is r and the rubber sheet 4 circumferentially contacted on the core tube 5 is arranged so that the winding start of the starting end is not disturbed when the winding of the rubber sheet 4 is started. When the distance from the contact end P _{1 to the} auto cutter 7 is L, the following condition is satisfied. 2πr / 4> L If the rubber sheet 4 (PE tape 8 together) is cut under such conditions, the surface of the new core tube 5 in which the rubber sheet 4 and the like are naturally exchanged as shown in FIG. 3B. The rubber sheet 4 is wound around a new core tube 5 while being stably rotated.

Next, FIG. 4A is a view taken in the direction of the arrow Q in FIG. 2, and is a longitudinal sectional view of the clutch mechanism 2 for mounting the core tube 5 at the end of the rotary arm 1. The rotating arm 1 is a full winding reel.
It is fixed without rotating except when the core 6 and the core tube 5 are exchanged. The core tube 5 is rotated in the winding direction only when the rubber sheet 4 is wound, but the core tube 5 is rotationally driven and stopped by rotationally driving the clutch mechanism 2 by a rotary drive device (not shown).

The clutch mechanism 2 is mounted on the rotary arm 1, and a rotary shaft holder having a through hole 21a communicating with a through hole 1a formed in the rotary arm 1 and a recess 21b and having a lid 21c attached thereto. 21 and a through hole 21 of the rotary shaft holder 21.
a and a through hole 1a of the rotary arm, a shaft portion 22a for detachably inserting the core tube 5 is provided at one end portion, and is supported by bearings 25 and 26, and a spline 22c is formed at the end portion. The rotating shaft 22 is provided, and a flange portion 23b is formed on one end portion of which a collar portion 23a is formed and at the other end portion of which a meshing tooth 23c is provided on a surface perpendicular to the axial direction. A sleeve 23 having a spline 23d that meshes with the spline 22c of the rotary shaft 22, and the rotary shaft holder 2
The sleeve 23 disposed in the recess 21b formed in
And a spring 24 arranged to bias the ends.

Further, at the position facing the meshing tooth 23c of the flange portion 23b of the sleeve 23, the meshing tooth 11a is formed.
The drive-side clutch plate 11 is provided, and the meshing teeth 23c and 11a are meshed and separated from each other as necessary. The core tube 5 is removably installed between the flange 22d of the rotary shaft 22 and a fixed nut 22b so that the core tube 5 rotates or stops together with the rotary shaft 22.

A lid 21c attached to the rotary shaft holder 21
Claw C1 is provided on the surface perpendicular to the axial direction of
A claw C2 that meshes with a claw C1 provided on the lid 21c is also provided on a surface of the collar 23a formed on the sleeve 23 at a right angle to the axial direction. A lid 2 provided with these nails C1 and C2
1c and the flange portion 23a of the rotary shaft 22 are the clutch mechanism 2
Reverse rotation prevention mechanism.

The construction of the rubber sheet winding device of the present invention is as described above. Next, its operation will be described.
At the place where the core tube 5 is fully rolled (FIG. 1), the meshing teeth 11a of the driving side clutch plate 11 of the clutch mechanism 2 and the meshing teeth 23c of the collar portion 23b of the sleeve 23 are separated. Then, the sleeve 23 is pushed in the axial direction by the urging force of the spring 24, and the claw C1 of the collar portion 23a of the sleeve 23 and the claw C2 of the lid 21c mesh with each other (the reverse rotation preventing mechanism works,
FIG. 4 (A)). The rotary shaft holder 21 is a rotary arm 1
Since it is fixed to the sleeve 23 is also fixed,
Further, the rotary shaft 22 which is spline-fitted with the sleeve 23 is also fixed. In this state, the rotary arm 1 is rotated by half (about 180 degrees) to empty the core tube 5 and the full-roll reel 6.
Even if the positions are replaced with each other (Fig. 2), the full-roll reel 6 does not reverse and the rubber sheet 4 does not melt, and the rubber roll 4 is stably exchanged, and the full-roll reel 6 is removed and a new core tube 5 is inserted. It is possible to change.

Next, the rubber sheet 4 and the PE tape 8 are cut by the auto cutter 7. The remaining rubber sheet 4 on the side of the core tube 5 (having a radius of r) easily adheres to the core tube 5, and the distance (L) from the contact end P _{1 to the} auto cutter 7 is "π.
Since it has a relationship of r / 2> L ”, it easily adheres to the surface of the core tube 5 (FIG. 3 (B)).

Again, the meshing teeth 1 of the drive side clutch plate 11
When 1a is meshed with the meshing teeth 23c of the collar portion 23b of the sleeve 23, the claws C1 and C2 of the reverse rotation preventing mechanism are disengaged against the biasing force of the spring 24, and the rotation shaft 22 can be rotated. (FIG. 4 (B). At this time, the initial winding angle α is an acute angle (FIG. 2), and since the adhesion between the rubber sheet 4 and the surface of the core tube 5 is increased, the rubber sheet at the start of winding is −
The fixing of the core 4 and the core tube 5 can be made more stable. In this way, the rubber sheet 4 is naturally adhered and fixed to the surface of the core tube 5 mounted on the rotary shaft 22, and the winding of the rubber sheet around the next core tube 5 can be smoothly started. I can.

The rotating shaft 2 is used instead of the reverse rotation preventing mechanism.
Even if a so-called one-way clutch is attached to 2, the unwinding of the rubber sheet 4 can be prevented.

[0021]

Since the rubber sheet winding device of the present invention is constructed as described above in detail, when the sheets are continuously wound, the start end of the sheet is set at the beginning of the sheet winding. A special device for fixing to the core tube is not required, and automatic switching of the core tube can be easily performed. Also, when cutting the sheet or replacing the full roll with the core tube, the full roll does not reverse and the sheet does not unravel, so the start work for winding the next sheet can be started. It becomes smooth and can greatly improve work efficiency.

[Brief description of drawings]

FIG. 1 is a layout view of a rubber sheet winding device of the present invention when viewed from the side, showing a state in which a rubber sheet is wound around a core tube to form a full-roll reel.

FIG. 2 is a layout view of the rubber sheet winding device of the present invention as viewed from the side, in which the rotating arm is rotated by 180 degrees and the rubber sheet is wound around the core and the core. The state immediately after exchanging with a pipe is shown.

FIG. 3 (A) is a layout view of the take-up device for the rubber sheet in the same state as in FIG. 2, showing the cutting position when the rubber sheet and the PE tape are cut by the auto cutter. Show.
FIG. 3B is a partially enlarged view of the rubber sheet and the auto cutter portion.

4 (A) is a view on arrow Q of FIG. 3 (A),
It is a longitudinal cross-sectional view of the clutch mechanism which attaches the core tube of an end of a rotary arm. FIG. 4 (B) is a view showing a state in which the lid side claw of the rotary shaft holder of the clutch and the claw of the collar portion of the sleeve are disengaged.

FIG. 5 is a schematic diagram of the structure of an accumulator that has been conventionally used for time adjustment.

[Explanation of symbols]

1 Rotating Arm 2 Clutch Mechanism 3 Turn Sheave 4 Rubber Sheet 5 Core Tube 6 Full Roll Reel 7 Auto Cutter 11 Drive Side Clutch Plate 11a Interlocking Teeth 21 Rotating Shaft Holder 21a Through Hole 21b Recess 21
c Lid 22 Rotating shaft 22a Collar part 22b Shaft part 22
c Spline 23 Sleeve 23a Collar 23b Collar 23
c meshing teeth 23d spline 24 springs C1, C2 claws

Claims (3)

[Claims] 1. A first and a second core tubes are rotatably provided at both ends of a rotary arm whose center is a center of rotation, and the first core tube is fully wound with a rubber sheet. A winding device for performing a cycle in which the rotating arm is rotated approximately half a turn to cut the rubber sheet between the core tubes and then the winding of the second core tube is started. The tube is made of a material having excellent adhesion to the rubber sheet, and is provided with a turn sheave having an acute initial winding angle with respect to the core tube of the rubber sheet. Device. 2. The cutting position of the rubber sheet is at least πr / 2 from the abutting end of the rubber sheet circumferentially contacting the core tube having a radius r. The winding apparatus for a rubber sheet according to the item. 3. The rubber sheet according to claim 1 or 2, wherein the core tube is removably provided on a shaft equipped with a clutch having a reverse rotation preventing mechanism operated by a spring. Take-up device.