JP5737781B2 - Synthetic resin sheet winding shaft - Google Patents

Description

The present invention includes a synthetic resin sheet (in the present invention, a synthetic resin sheet includes a newly manufactured sheet, a scrap sheet obtained by punching a label from the sheet, and a film thereof. Hereinafter, the synthetic resin sheet is simply referred to as a sheet . It is related with the synthetic resin sheet winding shaft which winds up.

  For manufactured sheets and processed sheets, in order to facilitate handling in the next processing and to improve storage efficiency, the rolled sheet is wound around the outer peripheral surface of the winding shaft and formed into a roll shape. The take-up shaft is extracted from the center of the paper and separated and accumulated.

However, when the sheet is wound around the winding shaft, the sheet is wound in a state where the peripheral speed of the winding shaft is slightly increased with respect to the sheet transfer speed and the sheet is fastened to the winding shaft. For this reason, since the wound sheet roll is in close contact with the winding shaft with high pressure, it is difficult to remove and remove the winding shaft located at the center of the sheet roll. In particular, when the sheet is a synthetic resin sheet, the sheet itself elastically expands greatly due to the winding force of the winding shaft, so that when the sheet is wound around the winding shaft, the sheet extends to the winding shaft. In this state, the sheet itself wound up is elastically restored to increase the tightening force on the winding shaft, and the sheet roll cannot be removed from the winding shaft.

In order to solve the above-mentioned problem, for example, as shown in Patent Document 1, a BOX roll main body configured by connecting a BOX roll to a semi-cylindrical member provided with a through-hole so that the interval can be expanded and contracted, and a slide There has been proposed a winding shaft constituted by a first widening member having a widening portion to be inserted into a groove and a second widening member having the same outer shape as the widening portion and having an insertion hole.

The winding shaft inserts the first and second widening members into the slide groove during winding to increase the outer diameter of the BOX roll body, and after winding, the first and second widening members. Is extracted from the slide groove to reduce the outer diameter of the BOX roll body, thereby facilitating the extraction of the wound sheet roll.

However, in the winding shaft, since the expansion / contraction diameter width of the BOX roll body depends on the protruding height of the widening portion, it is difficult to increase the expansion / contraction diameter width. For this reason, especially when winding a synthetic resin sheet that is elastically easily stretchable, the synthetic resin sheet is elastic with a force corresponding to the difference between the transfer speed and the circumferential speed of the winding shaft. It is necessary to set a large expansion / contraction diameter width because the tightening force is increased by being wound in an extended state. However, in the winding shaft, the expansion / contraction diameter width cannot be set large, and the winding shaft The sheet roll could not be easily extracted from

JP 2006-131344 A

  The problem to be solved is that the expansion / contraction diameter width of the winding shaft is small, and it is difficult to reliably and easily pull out the sheet roll wound from the winding shaft.

The present invention relates to a drive-side rotating body that is connected to a rotation driving member and rotates by winding, and a driven-side rotation that is disposed relative to the driving-side rotating body at an interval of a width in the winding orthogonal direction of the synthetic resin sheet. In the synthetic resin sheet take-up shaft for winding the synthetic resin sheet around a plurality of winding shafts provided at equal intervals around the axis between the bodies, the drive-side rotating body is a rotation drive member A drive-side disk having a plurality of shaft support portions provided at equal intervals around the axis on a surface facing the driven-side rotator, and the driven-side rotator is connected to each winding shaft. A large-diameter enlarged diameter holding member having a long hole that is inserted through the other end of the shaft and movable in the radial direction, and has a tapered guide portion on the side facing the drive-side rotating body is disposed in the hollow portion. Can be attached and detached detachably attached to the bottom of the cylinder One end of each winding shaft is pivotally supported so that the winding shaft swings in the radial direction with respect to each shaft support of the drive rotating body, and the other end of each winding shaft is The winding shaft is fixed in a diameter-expanded state in which the axes of the winding shafts are parallel to each other in cooperation with the large-diameter portion of the diameter-expanding holding member attached to the hollow portion of the driven-side drum and the driven drum. When removing the synthetic resin sheet roll wound up from, the diameter increasing holding member is removed from the driven side rotating body to release the fixed state of the other end of the winding shaft, and the other ends of the winding shafts are connected to each other. The most important feature is to enable the synthetic resin sheet roll wound in the direction of decreasing diameter to be pulled out from each winding shaft .

  In the present invention, the expansion / contraction diameter width can be set large, and the wound sheet roll can be reliably extracted and separated by a simple operation.

It is a whole perspective view of a winding shaft. It is explanatory drawing which shows the drive side of a winding shaft. It is explanatory drawing which shows the driven side of a winding shaft. It is sectional explanatory drawing which shows the attachment state of the diameter expansion holding member with respect to a driven side rotary body. It is sectional explanatory drawing which shows the connection state of the electric motor with respect to a drive side rotary body. It is sectional explanatory drawing which shows the state which removes the diameter expansion holding member from a driven side rotary body. It is sectional explanatory drawing which shows the state which removed the driven rotary body from the winding axis | shaft. It is sectional explanatory drawing which shows the state which removes a sheet roll from a winding axis | shaft.

When removing the synthetic resin sheet roll wound from the winding shaft, remove the expanded diameter holding member from the driven side rotating body to release the fixed state of the other end of the winding shaft, and set each winding shaft to the other end. The best embodiment is to enable the synthetic resin sheet roll wound by winding in the reduced diameter direction where the portions approach each other to be extracted from each winding shaft .

The present invention will be described below with reference to the drawings showing examples.
As shown in FIG. 1 to FIG. 3, the winding shaft 1 winds up various sheets (not shown) such as a synthetic resin sheet , and is relatively disposed with an interval in the width direction perpendicular to the winding of the sheet. The drive-side rotator 5 and the driven-side rotator 7, and the drive-side rotator 5 and the driven-side rotator 7 have an axis in the direction that coincides with the axis of the winding shaft 1, and the like in the circumferential direction. It is composed of three winding shafts 9 spanning the division positions. The number of winding shafts 9 is not limited to the above three, and may be more than that.

  The drive-side rotator 5 includes a drive-side disk 11 located outside and a drive-side drum 13 fixed concentrically inside the drive-side disk 11, and a main body frame 15 of a winding device (not shown). Are rotatably supported on a pair of front and rear support rollers 17 rotatably supported by the shaft. Further, a support member 19 inserted through a through hole 11a formed in the center portion of the drive side disk 11 is supported on the shaft support portion 13a formed in the center portion of the drive side drum 13 so as to slide in the axial direction. In addition, an engaged recess 19 a extending in a direction orthogonal to the axis is formed at the tip of the connected member 19.

  Three shaft support members 21 are fixed to the inner surface of the drive side disk 11 at an equally divided position in the circumferential direction, and the drive side drum 13 has a long hole 13b extending in the radial direction in the shaft support member 21. Correspondingly formed. One shaft end portion of each winding shaft 9 inserted into each long hole 13b of the drive side drum 13 is pivotally supported by the shaft support member 21 so that the winding shaft 9 swings in the radial direction.

In addition, an electric motor 23 as a rotational drive member having an output shaft that extends in the axial direction in alignment with the connected member 19 is fixed to the main body frame 15 on the drive-side rotator 5 side. A connecting member 25 having an engaging projection 25a that engages with the engaged recess 19a is fixed to the output shaft of the electric motor 23.

  The follower-side rotating body 7 is composed of a follower-side disk 27 located outside and a follower-side drum 29 fixed concentrically outside the follower-side disk 27, and a winding device (not shown). The main body frame 15 is rotatably supported on a pair of front and rear support rollers 31 that are rotatably supported. A screw hole 27 a is formed at the center of the driven side disk 27, and a through hole 29 a is formed at the center of the driven side drum 29. Further, three long holes 27b extending in the radial direction are formed on the outer peripheral side of the driven side disk 27 so as to coincide with the long holes 13b of the driving side drum 13, respectively. Each other end of each winding shaft 9 is inserted and supported.

  An enlarged diameter holding member 33 is inserted into the through hole 29a of the follower drum 29 in the screw hole 27a of the follower side disk 27 and screwed to the screw hole 27a. The diameter-expanding holding member 33 is fixed to a rotating shaft 33a having a threaded portion that is screwed into the screw hole 27a at the distal end, and coincides with the support radius of the winding shaft 9 in the driving-side rotating body 5. A large-diameter portion 33b that is inserted into the long hole 27b and supports the other end portion of the winding shaft 9 located in the driven drum 29, and a tapered guide portion that gradually decreases in diameter toward the front end side. 33c has a shape integrally formed. Reference numeral 33d in the drawing is an operating portion for rotating the diameter-enlargement holding member 33.

Next, the sheet winding action and the roll sheet removing action of the wound shaft 1 configured as described above will be described.
At the time of winding the sheet, the diameter-enlargement holding member 33 is inserted into the elongated drum 27 of the driven-side disk 27 in the driven-side rotating body 7 with the other end of each winding shaft 9 inserted into the driven-side drum. The screw portion is screwed into the screw hole 27a while being inserted into the through hole 29a. When the diameter-enlarged holding member 33 is inserted into the through hole 29 a of the driven drum 29, the guide 33 c is inserted into the long hole 27 b to the other end of each winding shaft 9 positioned in the driven drum 29. The other end portion is guided to slide in the diameter-expanding direction by sliding contact, and is positioned on the outer peripheral surface of the large-diameter portion 33b. (See Figure 4)

When the other end of each winding shaft 9 is positioned on the outer peripheral surface of the large-diameter portion 33b, the other end is sandwiched and fixed in cooperation with the outer peripheral end of the long hole 27b. As a result, the winding shafts 9 are set in a state in which the axes of the winding shafts 9 are parallel to each other at a predetermined diameter-enlarged position, and the winding shaft 1 is assembled.

The winding shaft 1 assembled as described above is positioned so that the drive side disk 11 of the drive side rotating body 5 is positioned on the support roller 17 and the driven side drum 29 of the driven side rotating body 7 is positioned on the support roller 31. After the arrangement, the connected member 19 is moved outward in the axial direction with respect to the drive-side disk 11, and the engaging protrusion 25 a of the connecting member 25 fixed to the rotating shaft of the electric motor 23 is engaged with the engaged recess 19 a. Combine. (See Figure 5)

After fixing the front end portion of the sheet to be wound in the above state to the winding shaft 9, the electric motor 23 is driven to rotate and wind the winding shaft 1 supported on the support rollers 17 and 31 in the winding direction. Take up the sheet to be rolled up. At the time of winding the sheet, the sheet is wound in a tension state in which the rotational speed of the electric motor 23 is controlled to apply tension to the sheet so that the peripheral speed of the winding shaft 1 is slightly faster than the sheet transfer speed. take.

When the sheet is a synthetic resin sheet, the sheet is wound around the winding shaft 1 while being elastically extended by the tension. For this reason, the sheet wound on the winding shaft 1 is reduced by its elastic restoring force and wound in a tightened state.

  In order to remove the sheet roll 35 of the sheet wound by the winding operation from the winding shaft 1, first, the connected member 19 is moved inward in the axial direction with respect to the driving side disk 11 of the driving side rotating body 5. Thus, the engagement of the engaging protrusion 25a with respect to the engaged recess 19a is released. Next, after moving the winding shaft 1 to the removal yard of the sheet roll 35 using a crane or the like (not shown) in the above state, the diameter expansion holding member 33 is removed from the driven rotating body 7. (See Figure 6)

  That is, when the operation portion 33d is rotated and the rotation shaft 33a is rotated in a direction in which the screw portion is not screwed into the screw hole 27a, the diameter expansion holding member 33 is moved outward in the axial direction. As a result, the other end portion of each winding shaft 9 held between the outer peripheral surface of the large-diameter portion 33b and one end portion of the long hole 27a is released from the above-described holding state with the movement of the enlarged diameter holding member 33. . Then, after the diameter-enlargement holding member 33 is extracted from the through hole 29a of the driven drum 29 along with the rotation device of the operation unit 33d, the driven rotating body 7 is removed from the other end of each winding shaft 9. (See Figure 7)

  As a result, each winding shaft 9 swings in the direction in which the other ends approach each other around the shaft support member 21 supporting the one shaft end, and thus in the direction in which the diameter of the imaginary line connecting each other end decreases. The support state with respect to the inner surface of the central hollow portion of the roll 35 is released, and the sheet roll 35 can be extracted from each winding shaft 9. (See Figure 8)

  In this embodiment, the inner diameter of the central hollow portion of the sheet roll 35 is reduced by reducing the diameter so that the other end side of each winding shaft 9 approaches each other by detaching the diameter-enlargement holding member 33 from the driven side rotating body 7. A gap is formed between the winding shafts 9 so that the sheet roll 35 can be detached from the winding shaft 1. At this time, a large gap can be formed between the inner surface of the central hollow portion of the sheet roll 35 and the winding shaft 9 by swinging each winding shaft 9 to a position where the other end portions come into contact with each other. The work of removing the sheet roll 35 from the take-off shaft 1 can be facilitated.

  In the above description, the one end of the winding shaft 9 is supported by the shaft support member 21 so as to be swingable with respect to the driving side rotating body 5. One end portion may be fixedly attached, and the sheet roll 35 may be extracted from the take-up shaft 1 by bending the other end portions toward each other due to the rigidity of each winding shaft 9 itself.

DESCRIPTION OF SYMBOLS 1 Winding shaft 5 Drive side rotary body 7 Driven side rotary body 9 Winding shaft 11 Drive side disk 11a Through hole 13 Drive side drum 13a Shaft support part 13b Long hole 15 Main body frame 17 Support roller 19 Connected member 19a Engagement recessed part 21 shaft support member 23 electric motor 25 as rotation drive member coupling member 25a engagement protrusion 27 driven side disk 27a screw hole 27b long hole 29 driven side drum 29a through hole 31 support roller 33 expanded diameter holding member 33a rotation shaft 33b large Diameter portion 33c Guide portion 33d Operation portion 35 Sheet roll

Claims (2)

A drive-side rotator that is connected to a rotation drive member and rotates by winding, and a driven-side rotator that is disposed relative to the drive-side rotator at an interval of a width in the direction perpendicular to the winding of the synthetic resin sheet. In a synthetic resin sheet winding shaft that winds by winding a synthetic resin sheet around a plurality of winding shafts provided at equal intervals around the axis line,
The drive-side rotator includes a drive-side disk that is detachably coupled to the rotation drive member, and has a plurality of shaft support portions provided at equal intervals around the axis on a surface facing the driven-side rotator. The driven-side rotator has a long hole through which the other end of each winding shaft is inserted and is movable in the radial direction, and has a tapered guide portion on the side facing the drive-side rotator. A cylindrically-shaped expanded holding member is attached to the hollow portion so as to be detachable,
One end of each winding shaft is pivotally supported so that the winding shaft swings in the radial direction with respect to each shaft support portion of the drive rotator,
The other end of each winding shaft has an expansion in which the axis of each winding shaft is parallel to each other by the cooperation of the large diameter portion of the enlarged diameter holding member attached to the hollow portion of the driven drum and the driven drum. Fixed in diameter,
When removing the synthetic resin sheet roll wound from the winding shaft, remove the expanded diameter holding member from the driven side rotating body to release the fixed state of the other end of the winding shaft, and set each winding shaft to the other end. A synthetic resin sheet take-up shaft that enables a synthetic resin sheet roll wound up in a reduced diameter direction where the portions approach each other to be taken out from each winding axis . In claim 1,
The driving side rotating body and the driven side rotating body are rotatably supported on a support roller, and the rotation driving member is detachably attached to the driving side rotating body .

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