JP2925545B1 - Winding axis for film etc. - Google Patents

Abstract

A relatively simple mechanism and structure is required for performing a power disconnection operation between a winding shaft and a paper tube using compressed air, and a large load resistance as the winding shaft. To be able to. SOLUTION: A paper tube chuck B is fixed to a shaft main body A so as to be immovable with respect to the axial direction and rotatable in the circumferential direction, and a shaft main body having an outer peripheral surface formed to be inclined toward the fixed ring. A slide ring 2 slidable in the axial direction and rotatable in the circumferential direction; and a chuck ball 3 which is located between the horizontal outer wall 12 of the stationary ring and the inclined outer peripheral surface 21 of the slide ring and protrudes from the horizontal outer wall 12. The shaft body A includes a clutch piece 6 that comes into contact with and separates from the inner peripheral surface of the stationary ring, and a slide operation piece 7 that slides the slide ring in the axial direction by contacting the end of the cone with the end surface of the slide ring. Two air supply passages 8a and 8b for supplying compressed air for allowing the clutch pieces and the slide operation pieces to independently move in and out by air pressure are provided in the axial direction. Formed along.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding shaft for a film or the like for winding paper or film on a paper tube.
The present invention relates to a winding shaft for a film or the like suitable for winding a plurality of paper tubes coaxially in parallel and winding them separately.

[0002]

2. Description of the Related Art A variety of mechanisms and structures have conventionally been proposed as this type of winding shaft. Among them, a power disconnection operation for transmitting and cutting the rotation torque of the winding shaft to and from a paper tube. Is configured to use compressed air, there is a problem that its mechanism and structure become complicated.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and is intended to perform a power disconnection operation between a winding shaft and a paper tube using compressed air. An object of the present invention is to provide a winding shaft of a film or the like which can have a relatively simple mechanism and structure and can have a large load resistance as the winding shaft.

[0004]

In order to achieve the above object, a winding shaft for a film or the like according to the present invention has a plurality of paper tube chucks arranged in the axial direction on the outer periphery of a shaft main body. A stationary ring formed in a substantially L-shaped cross section and provided on the shaft main body so as to be immovable with respect to the axial direction and rotatable in the circumferential direction;
A slide ring having an outer peripheral surface formed to be inclined toward the stationary ring and slidable in the axial direction on the shaft body so as to be rotatable in the circumferential direction; a horizontal outer wall portion of the stationary ring and an inclined outer periphery of the slide ring; And a chuck ball that is provided between the horizontal ring and the outer surface of the stationary ring so as to be able to protrude and retract in the outer peripheral direction. A clutch piece which is engaged with the peripheral surface so as to be able to come and go, and a slide which is formed in a substantially mountain shape and which is moved toward the outer periphery so that the tip of the conical abuts against the end face of the slide ring to slide the slide ring in the axial direction. An operation piece is provided, and compressed air is supplied to the clutch piece and the slide operation piece so as to be independently protruded and retracted by air pressure. The air supply path of the present is obtained by characterized by being formed along the axial direction. At this time, a spring is provided between the stationary ring and the slide ring to bias the slide ring in a direction to push back the slide ring, so that the degree of protrusion of the slide operation piece is reliably and promptly reflected on the degree of slide of the slide ring. Is preferable. The paper tube chuck may be composed of only one stationary ring, one slide ring and a plurality of chuck balls. It is preferable that the ring, the slide ring, and the chucking ball are arranged symmetrically with respect to each other about the slide ring when viewed in the axial direction.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. The winding shaft according to the present invention comprises a plurality of paper tube chucks B coaxially arranged on the outer periphery of a shaft main body A coaxially so as to be immovable with respect to the axial direction and rotatable in the circumferential direction. A paper tube C is removably fitted and mounted on the outer periphery of.

The paper tube chuck B comprises a stationary ring 1, a slide ring 2, and a chucking ball 3. In the illustrated embodiment, one stationary ring 1, one slide ring 2 and a plurality of slide rings are provided. 1 (4) chuck balls 3
The stationary ring 1, the slide ring 2, and the chucking ball 3 are arranged symmetrically with respect to the slide ring 2 when viewed in the axial direction. Are set as a unit, and a plurality of paper tube chuck units are respectively fixed to the shaft main body A so as to be fixed so as not to be shifted laterally by the coloring D.

The stationary ring 1 is formed in a substantially L-shaped cross section by a vertical plate portion 11 and a horizontal outer wall portion 12 so as to hold the chucking ball 3 so as to be able to protrude and retract. A plurality of engagement holes 13 are provided at appropriate intervals so as to be rotatable with respect to the direction, and hold the chucking balls 3 in the horizontal outer wall portion 12 so as to be able to protrude and retract. still,
In the illustrated embodiment, a fixing ring 4 having a bearing 41 is interposed between the stationary ring 1 and the shaft main body A,
Although the stationary ring 1 is integrated with the fixing ring 4 with screws 14, this is a problem in manufacturing and assembling, and the bearing 41 may be directly attached to the stationary ring 1. It should be readily understood that this is actually possible.

The slide ring 2 is formed to have the same diameter as or slightly smaller than the outer diameter of the stationary ring 1, and is moved toward the stationary ring 1 so that the outer peripheral surface 21 of the slide ring 2 extends inside the horizontal outer wall 12 of the stationary ring 1. It is formed so as to be inclined downward toward the main body, and is provided on the shaft main body A so as to slide in the axial direction and to be rotatable in the circumferential direction via the bearing 22.
Further, the slide ring 2 is provided with the inclined outer peripheral surface 21.
The inner peripheral surface on the side is slidably fitted on the outer periphery of the fixing ring 4, and the other end is supported by the bearing 22, and is configured to rotate in the same body as the stationary ring 1.

Further, between the stationary ring 1 and the slide ring 2, more specifically, between the vertical plate portion 11 of the stationary ring 1 and the tip of the inclined outer peripheral surface 21 of the slide ring 2, is slidably provided in the axial direction. A resilient spring 5 such as a coil spring is provided to urge the slide ring 2 in the direction of pushing the slide ring 2 back to the original position. After the operation of the slide operation piece 7 described later is released, the slide ring 2 is returned to the original position. The system is configured to return reliably and quickly.

[0010] The chucking ball 3 is a slide ring 2
More specifically, an engagement hole 13 formed in the horizontal outer wall portion 12 of the stationary ring 1 so as to slide in and out of the horizontal outer wall portion 12 of the stationary ring 1 by sliding in the axial direction.
A plurality (about 2 to 8) are arranged between the inside of the horizontal outer wall portion 12 of the stationary ring 1 and the inclined outer peripheral surface 21 of the slide ring 2 so as to protrude and retract. Incidentally, in the illustrated embodiment, a total of four chuck balls 3 are arranged at intervals of 90 °.

On the other hand, the shaft main body A is provided with a paper tube chuck B which is rotated and stopped when necessary,
A plurality of clutch pieces 6 and slide operation pieces 7 are provided at positions corresponding to the respective paper tube chucks B so as to be able to be adjusted as appropriate so as to be able to appropriately adjust the rotational torque of the paper core chucks B and at the same pitch along the axial direction. Two air supply passages 8a and 8b for supplying compressed air for independently moving the slide operation piece 6 and the slide operation piece 7 by air pressure are formed.

That is, the shaft main body A is provided with a housing chamber 9a for installing the clutch piece 6 so as to be able to move in and out and a housing chamber 9b for installing the slide operation piece 7 so as to be able to move in and out. The clutch piece 6 is formed in a direction orthogonal to the clutch piece 6 and installed in the clutch piece accommodation chamber 9a.
And two air supply passages 8a and 8b are arranged at the axial center from the end to the end so that the slide operation pieces 7 installed in the slide operation piece storage chamber 9b can be separately and independently moved in and out. Rotary joint 1 formed independently and in parallel along the direction and connected to the air supply source
0 is connected to one end and an exhaust hose (not shown) is connected to the other end. It is to be noted that the accommodation rooms 9a, 9 for installing the clutch piece 6 and the slide operation piece 7 so as to be able to come and go.
b is formed by applying two to each of a set of paper core chucks, forming them at 180 ° intervals (both vertically in the drawing) around the axis of the shaft main body A, and A plurality of pieces are formed at the same pitch along the axial direction of the shaft main body A so as to correspond to the paper tube chuck.

The clutch piece 6 is for rotating and stopping the paper tube chuck B with respect to the rotating shaft main body A when necessary, and a housing 9a formed in the shaft main body A. The inner peripheral surface of the stationary ring 1 of the paper tube chuck B (in the illustrated embodiment, the inner peripheral surface of the fixing ring 4; hereinafter the same). ) Are configured to engage with and be freely separated from each other. That is, the clutch piece 6 is housed and installed in the housing chamber 9a so as to be freely protruded and retracted, is pressed by the air pressure of the compressed air sent from the air supply passage 8a, and protrudes toward the outer periphery of the shaft main body A, and the paper is moved. It is pressed into engagement with the inner peripheral surface of the stationary ring 1 of the pipe chuck B, and is immersed by stopping the supply of the compressed air from the air supply passage 8a to make the inside of the accommodation chamber 9a a negative pressure. It is configured to be separated from the peripheral surface and return to the original position. Therefore, by adjusting the air pressure of the compressed air sent from the air supply passage 8a,
The pressing force of the clutch piece 6 against the inner peripheral surface of the stationary ring 1 of the paper tube chuck B can be adjusted, and as a result, the rotational torque of the paper tube chuck B can be arbitrarily adjusted.

The slide operation piece 7 is for rotating and stopping the paper tube C with respect to the rotating paper tube chuck B when necessary, and the tip portion 71 is formed in a substantially conical shape. The conical tip portion 71 of the paper tube chuck B is formed so as to be freely protruded and retracted in the accommodation chamber 9b formed in the shaft main body A, and to move out and out toward the outer periphery of the shaft main body A. The slide ring 2 is configured to slide in the axial direction by freely contacting the end surface of the slide ring 2. That is, the slide operation piece 7
The conical tip 71 is housed and installed in the housing chamber 9b so as to be freely retractable and protruded toward the outer periphery of the shaft main body A by being pressed by the air pressure of the compressed air sent from the air supply passage 8b.
Abuts against the end face of the slide ring 2 of the paper tube chuck B, slides the slide ring 2 in the axial direction, and stops the supply of compressed air from the air supply passage 8b to the storage chamber 9b.
The inside is evacuated by applying a negative pressure, so that the conical tip 71 is separated from the end surface of the slide ring 2 of the paper tube chuck B and returns to the original position. Therefore, by adjusting the air pressure of the compressed air sent from the air supply passage 8b, the portion (height) of the conical tip 71 of the slide operation piece 7 abutting on the end surface of the slide ring 2 of the paper tube chuck B is adjusted. Direction), and as a result, the inside of the horizontal outer wall portion 12 of the stationary ring 1 and the inclined outer peripheral surface of the slide ring 2 so as to protrude and retract from the engagement hole 13 formed in the horizontal outer wall portion 12 of the stationary ring 1. The amount of protrusion of the chucking ball 3 disposed between the upper portion 21 and the upper portion 21 changes, so that the torque for rotating the paper tube C can be arbitrarily adjusted. That is,
The degree of protrusion of the slide operation piece 7 is reflected on the degree of movement of the chuck ball 3 via the slide ring 2, and the paper tube C
Is reflected in the rotational torque of the motor.

Next, the operation of winding a paper or a film using the winding shaft according to the present invention will be described. First, a suitable number of paper tube chucks B are fitted to the shaft body A, and the inner peripheral surface of the stationary ring 1 and the end surface of the slide ring 2 of each of the paper tube chucks B are the clutch piece 6 and the slide operation piece 7 of the shaft body A. The paper tube C is rotatably fitted on the outer periphery of the paper tube chuck B and set. Then, the shaft main body A is rotated. At this time, only the shaft main body A rotates, and no rotational force is transmitted to the paper tube chuck B and the paper tube C.
(State of FIG. 2).

Thereafter, when compressed air is supplied from the air supply passage 8a, the clutch piece 6 is pressed by the air pressure of the compressed air and protrudes toward the outer periphery of the shaft body A as shown in FIG. B is pressed into engagement with the inner peripheral surface of the stationary ring 1, and as a result, the paper tube chuck B starts rotating in the same manner as the shaft main body A. Then, when compressed air is supplied from the air supply passage 8b, the slide operation piece 7 is pressed by the air pressure of the compressed air and protrudes toward the outer periphery of the shaft body A as shown in FIG. Abuts against the end face of the slide ring 2 of the paper tube chuck B,
Slide in the axial direction. Then, the inside of the horizontal outer wall portion 12 of the stationary ring 1 and the inclined outer peripheral surface 2 of the slide ring 2
An engaging hole formed in the horizontal outer wall portion 12 of the stationary ring 1 by the chuck ball 3 disposed between the stationary ring 1 and the chucking ball 3 rolling on the inclined outer peripheral surface 21 with the sliding movement of the slide ring 2. 13, the chucking ball 3 is pressed against the inner peripheral surface of the paper tube C, and the paper tube C rotates in the same manner as the paper tube chuck B. Will be wound up.

[0017]

Since the winding shaft for a film or the like according to the present invention is configured as described above, the following operation and effect can be obtained. The basic constituent members other than the shaft main body are only a paper tube chuck composed of a stationary ring, a slide ring, and a chucking ball, and a clutch piece and a slide operation piece which are installed on the shaft body side so as to be freely retractable. Therefore, a relatively simple mechanism and structure can be used as a winding shaft for performing a power disconnection operation between the winding shaft and the paper tube using compressed air. Since the chucking balls are arranged between the inside of the horizontal outer wall portion of the stationary ring and the inclined outer peripheral surface of the slide ring to constitute the paper tube chuck, the paper tube for transmitting the rotational torque of the shaft body to the paper tube. The chuck can be formed to the minimum necessary thickness. Therefore, when the inner diameter of the paper tube is constant, the outer diameter of the shaft main body can be made thicker by that amount, and the load resistance as the winding shaft can be increased. A clutch piece that serves to transmit the rotational torque of the shaft body to the paper tube chuck and a slide operation piece that serves to transmit the rotational torque of the paper tube chuck to the paper tube can be operated independently of each other. Therefore, work operability when winding paper, film, and the like onto a paper tube is improved. The rotation torque transmitted to the paper tube chuck can be adjusted arbitrarily by adjusting the protrusion of the clutch piece, and the rotation torque transmitted to the paper tube can be adjusted arbitrarily by adjusting the protrusion of the slide operation piece. It is possible to freely adjust the torque at the time of taking, so that the paper, the film and the like can be taken up neatly. Since a spring is provided between the stationary ring and the slide ring to bias the slide ring in the direction of pushing back, the degree of protrusion of the slide operation piece is reliably and promptly reflected on the degree of slide of the slide ring. The paper tube chucks are configured by using two sets of one set including one stationary ring, one slide ring, and a plurality of chuck balls, and symmetrically arranged in the axial direction with respect to each other. For example, the paper tube chuck can be formed compactly, and the slide operation piece for operating the slide ring can be shared by two paper tube chucks.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIGS. 2A and 2B show a state in which neither the paper tube chuck nor the paper tube is rotating. FIG. 2A is a cross-sectional view of a main part, and FIG.
It is a-(X) line sectional view.

3A and 3B show a state in which the paper tube is stopped and the paper tube chuck is rotating, wherein FIG. 3A is a cross-sectional view of a main part, and FIG. 3B is a cross-sectional view taken along line (Y)-(Y) of FIG. is there.

4A and 4B show a state in which the paper tube chuck and the paper tube are rotating, wherein FIG. 4A is a cross-sectional view of a main part, and FIG.
It is a sectional view taken along the line-(Z).

[Explanation of symbols]

A: Shaft body B: Paper tube chuck C: Paper tube 1: Fixed ring 2: Slide ring 3: Ball for chuck 4: Fixing ring 5: Spring 6: Clutch piece 7: Slide operation piece 8a, 8b: Air supply path 9a, 9b: accommodation room 10: rotary joint 12: horizontal outer wall 21: inclined outer peripheral surface 71: conical tip

Claims (3)

(57) [Claims] 1. A plurality of paper tube chucks are arranged in parallel in the axial direction on the outer periphery of a shaft body. The paper tube chucks are formed to have a substantially L-shaped cross section, and are fixed to the shaft body in the circumferential direction while being immovable in the axial direction. A stationary ring rotatably provided, a slide ring having an outer peripheral surface formed to be inclined toward the stationary ring and sliding in the axial direction on the shaft body so as to be rotatable in the peripheral direction, and a horizontal outer wall of the stationary ring And a chucking ball which is provided between the portion and the inclined outer peripheral surface of the slide ring and is provided so as to be able to protrude and retract in the outer peripheral direction from the horizontal outer wall portion of the stationary ring. The clutch piece is engaged with the inner peripheral surface of the stationary ring by moving so as to be able to freely contact with and separate from the inner peripheral surface of the stationary ring. A sliding operation piece for sliding the slide ring in the axial direction, and two air supply paths for supplying compressed air for independently operating the clutch piece and the sliding operation piece by air pressure. A winding shaft for a film or the like, characterized by being formed along the axial direction. 2. A winding shaft for a film or the like according to claim 1, further comprising a spring provided between said stationary ring and said slide ring to urge said slide ring in a direction to push back. 3. The paper tube chuck according to claim 1, wherein the two sets of the stationary ring, the slide ring, and the chuck ball are symmetrically arranged with respect to each other.
A winding shaft for the described film or the like.