JP7393072B1 - Winding device for sheet products onto winding tubes - Google Patents

Abstract

[Problem] A device in which a plurality of cylinder units that rotate integrally with the winding shaft and chuck units that are rotatably attached to the winding shaft and hold the winding tube on the outer circumferential side are alternately arranged in parallel in the axial direction of the winding shaft. Provided is a device that can easily adjust the frictional force between the pistons of a plurality of air cylinders of a cylinder unit and the friction ring of a chuck unit. [Solution] An adjustment ring 18 is slidably mounted on a cylinder unit 16 in the circumferential direction, engaging portions are formed on pistons 30b of a plurality of air cylinders, and a plurality of locking portions 72a are formed on the adjustment ring. 72f is extended, and the locking portion of the adjustment ring is set to engage or disengage from the engagement portion of the piston by changing the rotational angular position of the adjustment ring with respect to the cylinder unit multiple times. By selectively suppressing the operation of the pistons and changing the number of pistons that press against the friction ring of the chuck unit, the contact area between the friction ring and the plurality of pistons can be adjusted. [Selection diagram] Figure 12-1

Description

This invention relates to the winding of sheet-like products used in the process of winding various sheet-like products (webs) such as long strips of plastic film, paper, non-woven fabric, and metal foil onto a winding tube (core). Regarding the removal device.

A winding device for sheet products that winds long strips of plastic film, paper, nonwoven fabric, metal foil, etc. onto a winding tube, is equipped with a hollow winding shaft that is driven to rotate, and is fixed concentrically to the winding shaft. A ring-shaped cylinder unit that rotates integrally with the winding shaft and a ring-shaped chuck unit that is attached concentrically to the winding shaft and can rotate relative to the winding shaft are arranged in parallel in the axial direction of the winding shaft. The chuck unit is provided with a plurality of chuck members around the circumference of its outer periphery, and the winding tube is integrally held by the plurality of chuck members so as to be detachable from its inner circumferential surface side. The cylinder unit has a plurality of cylinder holes arranged around the circumference that are arranged parallel to the axis of the winding shaft and open on the annular side facing the chuck unit, and each cylinder hole has a An air cylinder is formed by inserting a piston whose tip moves forward and backward from an annular side opening by compressed air supplied to the cylinder hole through a hollow part of the winding shaft, an air path formed in the tube wall of the winding shaft, and the cylinder unit. In addition, the chuck unit has a structure in which a friction ring, which the tip of the piston of the cylinder unit presses directly or indirectly, is provided so as to rotate integrally with the chuck unit, and the winding is rotationally driven. The rotational power of the cylinder unit that rotates integrally with the shaft is transmitted to the chuck unit by the frictional force between the tip of the piston of the cylinder unit and the friction ring, and the winding tube is held by the chuck unit via the chuck member. A device is known in which a sheet product is wound around a winding tube by rotating the winding tube.

When winding various sheet products onto a winding tube using a device with the above-mentioned configuration, for example, a long strip of film cut into narrow widths by a shredding slitter is integrated into a chuck unit. When winding a film onto a winding tube that is held in place, in order to wind the film with uniform tension, the rotational power of the cylinder unit, which rotates integrally with the rotationally driven winding shaft, must be applied to the tip of the piston of the cylinder unit. It is necessary to ensure that the torque generated in the chuck unit by being transmitted to the chuck unit due to the frictional force with the friction ring does not vary among the chuck units. In this case, the coefficient of friction between the piston tip and the friction ring of the cylinder unit ([frictional force acting on the contact surface between the piston tip and the friction ring]/[the pressure acting perpendicular to the contact surface between the piston tip and the friction ring] ]) are all the same, it is easy to make the torque generated by the chuck unit uniform. However, since the coefficient of friction varies among individuals, in order to make the torque generated by the chuck unit uniform, it is necessary to adjust the contact area between the piston and the friction ring, and to adjust the pressure of the compressed air supplied to the air cylinder of the cylinder unit. It is necessary to adjust the

For example, in a sheet product winding device having the above-described configuration, a through hole is formed in the radial direction of the cylinder unit, penetrating from the outer circumferential surface of the cylinder unit to the cylinder hole of the air cylinder, and the through hole is formed in the circumferential surface of the piston of the air cylinder. , a locking hole is formed so as to correspond to the formation position of the through hole when the piston is retracted into the cylinder hole, and a suction formed of a permanent magnet or a ferromagnetic material is provided on the inner side of the locking hole. A member is fixedly installed in the through hole and the locking hole, and is formed of a permanent magnet or a ferromagnetic material that is inserted into the through hole and whose tip part fits into the locking hole and magnetically attracts the attracting member. A device has been proposed in which a locking pin is removably inserted. With this configuration, by inserting the locking pin into the through hole and the locking hole, the locking pin is engaged with the locking hole to stop the movement of the piston, while the permanent magnet or strong By using a jig made of a magnetic material and having a shape that allows its tip to be inserted into the through hole, the locking pin is magnetically joined to the tip of the jig and pulled out from the through hole and the locking hole. The piston is allowed to move forward from the hole. For multiple air cylinders, by selectively inhibiting the pistons from advancing from the cylinder holes, the number of pistons whose tips come into contact with the friction ring is changed, and the contact between the friction ring and the multiple pistons is changed. The area can be adjusted (for example, see Patent Document 1).

Patent No. 6710841 (pages 7-8, Figure 6-7)

According to the configuration disclosed in Patent Document 1, the connection between the tip of the piston and the friction ring is achieved by a relatively simple operation of inserting and removing the locking pin into the through hole of the cylinder unit and the locking hole of the piston. It becomes possible to adjust the rotational power transmitted from the cylinder unit to the chuck unit by the frictional force. However, in a device having such a configuration, it is necessary to prepare a special jig for extracting the locking pin from the through hole of the cylinder unit and the locking hole of the piston. Further, it is necessary to store the locking pins extracted from the through holes and the locking holes so that they will not be lost. Furthermore, since it is difficult to visually tell whether the locking pin is inserted into the through hole and the locking hole, there is a problem in that it takes time to adjust the contact area between the piston and the friction ring.

This invention was made in view of the above circumstances, and includes a cylinder unit that is concentrically fixed to a rotatably driven hollow winding shaft and rotates integrally with the winding shaft; A winding device for sheet-like products having a configuration in which a plurality of chuck units are arranged alternately in the axial direction of the winding shaft and a chuck unit is attached to the winding shaft and is rotatable with respect to the winding shaft and integrally holds the winding tube with a chuck member. In order to equalize the winding torque of the sheet product onto the winding tube in multiple chuck units, it is easy to adjust the frictional force between the pistons of the multiple air cylinders of the cylinder unit and the friction ring of the chuck unit. To provide a device that can perform the work without the need to prepare a special jig for the work and without the need for the trouble of storing some parts.

In this invention, as a means for achieving the above object, an adjustment ring is attached to the cylinder unit, and by rotating the adjustment ring with respect to the cylinder unit, the pistons advance from the cylinder holes of the plurality of air cylinders. can now be selectively suppressed.
That is, the invention according to claim 1 includes a ring-shaped cylinder unit that is fixed concentrically to a hollow winding shaft that is rotatably driven and rotates integrally with the winding shaft; A ring-shaped chuck unit that integrally holds the winding tube detachably from the inner peripheral surface side by means of a plurality of chuck members disposed around the circumference of the outer circumferential portion is alternately attached to the winding shaft. A plurality of cylinder holes are arranged in parallel along the axial direction of the winding shaft, and a plurality of cylinder holes are formed around the circumference of the cylinder unit, the cylinder holes being arranged parallel to the axis of the winding shaft and opening on the annular side surface facing the chuck unit, A piston whose tip moves forward and backward from the annular side opening is fitted into each cylinder hole by compressed air supplied to the cylinder hole through the hollow part of the winding shaft and an air path formed in the tube wall of the winding shaft and the cylinder unit. A friction ring is provided on the chuck unit so as to rotate integrally with the chuck unit, and a friction ring is provided on the chuck unit to which the tip of the piston of the cylinder unit presses directly or indirectly. The rotational power of the cylinder unit, which rotates integrally with the driven winding shaft, is transmitted to the chuck unit by the frictional force between the tip of the piston of the cylinder unit and the friction ring. In a winding device for winding a sheet-like product onto a winding tube, the winding tube held through a chuck member is rotated to wind the sheet-like product onto the winding tube, and on the annular side surface side of the cylinder unit, An adjustment ring having an inner diameter dimension that does not inhibit the movement of the pistons of the plurality of air cylinders is attached concentrically to the cylinder unit and slidably in the circumferential direction with respect to the cylinder unit, An engaging portion is formed in each piston by cutting out the outer side facing the outer peripheral surface of the cylinder unit along the axial direction of the piston from the tip end surface of the piston, and the adjusting ring is provided with an engaging portion. A plurality of locking portions respectively corresponding to the pistons of the plurality of air cylinders are provided so as to protrude in the centripetal direction of the adjustment ring, and each locking portion of the adjustment ring extends in the circumferential direction of the adjustment ring. By varying the length dimensions and changing the rotational angle position of the adjusting ring with respect to the cylinder unit multiple times, each locking portion of the adjusting ring is sequentially engaged with the engaging portion of the piston of each air cylinder. The contact area between the friction ring and the plurality of pistons can be adjusted by selectively inhibiting the operation of the pistons and changing the number of pistons whose tips come into contact with the friction ring. The present invention is characterized in that indicators indicating a plurality of rotational angular positions of the adjusting ring relative to the cylinder unit are attached to the outer circumferential surface of the adjusting ring or the outer circumferential surface of the cylinder unit.

The invention according to claim 2 is the winding device according to claim 1, wherein the cylinder unit is provided with six or more air cylinders equally distributed in the circumferential direction, and the adjustment ring is provided with the same number of locking air cylinders as the air cylinders. It is characterized by having a section.

The invention according to claim 3 is the winding device according to claim 2, in which the cylinder unit is provided with six air cylinders, the adjustment ring is provided with six locking parts, and the adjustment ring is connected to the axis of the winding device. Each time the cylinder unit is rotated by 7.5 degrees in one direction with the center position as the center of rotation, the number of air cylinders whose pistons are inhibited increases by one, and the adjustment ring is adjusted to its axial center position. The six locks are configured such that the number of air cylinders whose pistons are inhibited decreases by one each time the cylinder unit is rotated by 7.5 degrees in the opposite direction to the one direction as the center of rotation. It is characterized by forming a part.

The invention according to claim 4 is the winding device according to any one of claims 1 to 3, in which an adjustment ring is interposed in the cylinder unit so that the rotational movement of the adjustment ring is not inhibited, and the axis An annular plate is fixed to allow slight movement of the adjustment ring in the direction, a guide protrusion and a sliding protrusion are formed on an annular side surface of the adjustment ring opposite to the annular plate, and the annular plate A plurality of small holes are arranged in an arc shape into which the guide convex portions are successively fitted in response to changes in the rotational angular position of the adjustment ring with respect to the cylinder unit, and the sliding contact protrusions are arranged in an arc shape. a circular arc-shaped elongated hole is formed into which the guide convex portion is fitted and comes into sliding contact with the plurality of small holes, and the adjusting ring is attached from the cylinder unit toward the annular plate. It is characterized by the provision of a spring for applying force.

In the sheet-like product winding device of the invention according to claim 1, the adjusting ring is slid in the circumferential direction with respect to the cylinder unit, and the locking portion of the adjusting ring adjusts the cylinder hole of the air cylinder of the cylinder unit. The aperture is partially covered or left open. Among the plurality of air cylinders in the cylinder unit, for the air cylinder whose cylinder hole opening is partially shielded by the locking part of the adjustment ring, the hollow part of the winding shaft, the tube wall of the winding shaft, and the cylinder unit are Even if an attempt is made to operate the piston by supplying compressed air to the cylinder hole through the air path, the engaging part formed on the piston engages with the locking part of the adjustment ring, and the operation of the piston is inhibited. As for the air cylinder with the cylinder hole opened, the piston operates without any trouble by supplying compressed air to the cylinder hole, and the tip of the piston presses against the friction ring provided on the chuck unit. In this case, each locking part of the adjustment ring has a different length dimension in the circumferential direction of the adjustment ring, and by changing the rotation angle position of the adjustment ring with respect to the cylinder unit multiple times, each air cylinder The locking portions of the adjustment ring are set to sequentially engage or disengage from the engaging portions of the piston, thereby selectively inhibiting the operation of the piston. Therefore, by changing the number of pistons whose tips come into contact with the friction ring, it is possible to adjust the contact area between the friction ring and the plurality of pistons. The outer peripheral surface of the adjustment ring or the outer peripheral surface of the cylinder unit is marked with indicators that indicate multiple rotational angle positions of the adjustment ring with respect to the cylinder unit, so while visually checking the indicators, the friction ring and piston are Adjustment of the contact area can be easily performed.
Therefore, when the winding device according to the present invention is used, it becomes easier to equalize the winding torque of the sheet product onto the winding tubes in a plurality of chuck units, and a special jig is required for this work. There is no need to prepare any parts, and there is no need to take the trouble of storing some parts.

In the winding device of the invention according to claim 2, by activating and inhibiting the pistons of six or more air cylinders, it is possible to appropriately adjust the contact area between the friction ring and the piston, and It is possible to satisfactorily equalize the winding torque of the sheet-like product onto the winding tube in the unit.

In the winding device of the invention according to claim 3, the operation of the air cylinder is such that the operation of the piston is suppressed each time the adjustment ring is rotated by 7.5 degrees in one direction or in the opposite direction with respect to the cylinder unit. The contact area between the friction ring and the piston can be adjusted in seven steps by increasing or decreasing the number by one.

In the winding device of the invention according to claim 4, when changing the rotation angle position of the adjustment ring with respect to the cylinder unit, the adjustment ring is slightly moved against the elastic force of the spring, and the annular shape fixed to the cylinder unit is moved slightly. The adjustment ring is once separated from the plate, and the guide protrusion of the adjustment ring is removed from the small hole of the annular plate. In this state, the adjusting ring is slightly rotated with respect to the cylinder unit while the sliding protrusion of the adjusting ring is brought into sliding contact with the elongated hole of the annular plate. When the guide protrusion of the adjustment ring is positioned in the small hole adjacent to the small hole of the annular plate, the adjustment ring is pressed against the annular plate by the elastic force of the spring, and the adjustment ring is pressed into contact with the small hole of the annular plate. Fit the guide protrusion of the adjustment ring. By these operations, the rotational angular position of the adjustment ring can be easily changed by one step, making it easier to adjust the contact area between the friction ring and the piston.

FIG. 1 is a partial external front view showing an example of the configuration of a device for winding a sheet-like product onto a winding tube according to the present invention. FIG. 2 is a partially enlarged front view showing an example of an embodiment of the present invention and showing a main part of the winding device shown in FIG. 1 partially in longitudinal section. FIG. 3 is a left side view of a cylinder block in which an adjustment ring and an annular plate are assembled to one cylinder unit, which is a component of the winding device shown in FIG. 2, as viewed from the annular plate side. 4 is a front view of the cylinder block shown in FIG. 3. FIG. FIG. 4 is a front view showing a state in which the cylinder block shown in FIG. 3 is separated into each component, with a part thereof shown in a longitudinal section. 4 is a left side view of a cylinder unit that is a component of the cylinder block shown in FIG. 3. FIG. 7 is a perspective view showing a piston of an air cylinder that is a component of the cylinder unit shown in FIG. 6. FIG. FIG. 4 is a left side view of an adjustment ring that is a component of the cylinder block shown in FIG. 3. FIG. FIG. 4 is a left side view of an annular plate that is a component of the cylinder block shown in FIG. 3. FIG. 9 is a partially enlarged front sectional view for explaining the engagement relationship between the piston shown in FIG. 7 and the adjustment ring shown in FIG. 8. FIG. FIG. 5 is a front view of the cylinder block shown in FIG. 4 in which indicators are displayed in different positions. FIG. 4 is a left side view seen from the adjustment ring side with the annular plate removed from the cylinder block shown in FIG. 3, showing one mode in which the piston of the air cylinder of the cylinder unit and the locking portion of the adjustment ring engage; FIG. It is a left side view similarly, Comprising: It is a figure which shows another aspect in which the piston of the air cylinder of a cylinder unit and the locking part of the adjustment ring engage. FIG. 7 is a left side view showing still another aspect in which the piston of the air cylinder of the cylinder unit and the locking portion of the adjustment ring engage with each other. FIG. 7 is a left side view showing still another aspect in which the piston of the air cylinder of the cylinder unit and the locking portion of the adjustment ring engage with each other. FIG. 7 is a left side view showing still another aspect in which the piston of the air cylinder of the cylinder unit and the locking portion of the adjustment ring engage with each other. FIG. 7 is a left side view showing still another aspect in which the piston of the air cylinder of the cylinder unit and the locking portion of the adjustment ring engage with each other. FIG. 7 is a left side view showing still another aspect in which the piston of the air cylinder of the cylinder unit and the locking portion of the adjustment ring engage with each other.

Hereinafter, the best embodiment of this invention will be described with reference to the drawings.
As shown in FIG. 1, an example of the configuration of the device for winding a sheet-like product onto a winding tube according to the present invention, as shown in FIG. , a cylinder block 14 consisting of a ring-shaped cylinder unit 16, an adjustment ring 18, and an annular plate 20, and a chuck unit 22, which is also ring-shaped and has the same diameter as the cylinder unit 16, are arranged in the axial direction of the winding shaft 12. A plurality of winding shaft portions 10 are arranged alternately in parallel along the winding shaft.

The winding shaft 12 is formed hollow, and the hollow portion serves as an air passage 24 that is connected to a compressed air source (not shown). The cylinder unit 16 is fixed concentrically to the outer peripheral surface of the winding shaft 12, and the adjustment ring 18 is attached to the cylinder unit 16 concentrically and slidably in the circumferential direction with respect to the cylinder unit 16. The annular plate 20 is fixed to the cylinder unit 16 with the adjustment ring 18 interposed therebetween so as not to inhibit the rotational movement of the adjustment ring 18. Further, the adjustment ring 18 is held by the cylinder unit 16 so as to be able to move slightly in the axial direction, as will be described later. The cylinder block 14, which includes the cylinder unit 16, the adjustment ring 18, and the annular plate 20, rotates integrally with the winding shaft 12. Further, the chuck unit 22 is attached to the outer circumferential surface of the winding shaft 12 concentrically therewith, and is rotatably held on the winding shaft 12 via a bearing as described later.

As shown in an enlarged view of a part of the winding shaft section 10 in FIG. , 28b are each provided around the circumference. In addition, in FIG. 2, illustration of the winding shaft 12 is omitted, and the upper half of the winding shaft portion 10 is shown in a vertical cross-sectional view, and the lower half is shown in a partial vertical cross-sectional view. As shown in the left side view of the cylinder block 14 in FIG. 3, in the illustrated example, 12 (2×6) air cylinders 26a and 26b are provided on one annular side surface of the cylinder unit 16, and on the other side. In the illustrated example, six air cylinders 26b are provided on the annular side surface side, and each air cylinder 26b is arranged at an intermediate position between each pair of adjacent air cylinders 26a, 26a. Pistons 30a and 30b are fitted into cylinder holes 28a and 28b of the air cylinders 26a and 26b, and the pistons 30a and 30b are configured to move forward and backward from the openings of the cylinder holes 28a and 28b. These air cylinders 26a and 26b are arranged parallel to the axis of the winding shaft 12, respectively. In addition, in FIG. 2, for convenience of explanation, different operating states of the cylinder unit 16 and the chuck unit 22 are shown together in one drawing.

Although not shown, a ventilation passage communicating with the air passage 24 is bored through the winding shaft 12 in the radial direction, and a long ventilation groove communicating with the ventilation passage is formed on the outer periphery of the winding shaft 12. It is shaped to extend in the axial direction. Further, the cylinder unit 16 has ventilation annular grooves 32 and 34 formed in the circumferential direction on its inner peripheral surface, and ventilation holes 36 and 38 communicating with the ventilation annular grooves 32 and 34 are provided for each of the air cylinders 26a and 26b. are drilled in each. Then, compressed air is supplied from the compressed air source to the air cylinders 26a, 26b through the air passage 24, ventilation passage and long ventilation groove of the winding shaft 12, and the ventilation annular grooves 32, 34 and ventilation holes 36, 38 of the cylinder unit 16. As a result, the air cylinders 26a, 26b are operated to advance the pistons 30a, 30b from the cylinder holes 28a, 28b toward the left and right chuck units 22, 22.

The chuck unit 22 is rotatably held on the outer peripheral surface of the winding shaft 12 via a bearing 40. A friction ring 42 is disposed on the chuck unit 22 so as to face one annular side surface of the cylinder unit 16 on the side where the air cylinder 26a is provided. This friction ring 42 is held slidably in a direction parallel to the axial direction of the winding shaft 12. Further, the chuck unit 22 is provided with a coil spring 44, and the elastic force of the coil spring 44 urges the friction ring 42 toward the air cylinder 26a of the cylinder unit 16. Reference numeral 46 in the figure is a ring-shaped stopper for restricting the friction ring 42 from moving beyond a predetermined distance toward the air cylinder 26a due to the elastic force of the coil spring 44. Further, another friction ring 48 is disposed on the chuck unit 22 so as to face the other annular side surface of the cylinder unit 16 on the side where the air cylinder 26b is provided.

A plurality of circular holes 50, for example, six circular holes 50, are bored around the circumference of the chuck unit 22, and a chuck member 52 is fitted into each of the circular holes 50, respectively. The bottom surface of the chuck member 52 is formed in a tapered shape, and the outer circumference of the friction ring 42 has a housing hole 54 formed in a tapered shape whose bottom surface corresponds to the tapered bottom surface of the chuck member 52. There are 6 pieces. A chuck member 52 is accommodated in each accommodation hole 54 of the friction ring 42, and as the friction ring 42 slides, the chuck member 52 moves in the radial direction from the circular hole 50 on the outer periphery of the chuck unit 22. It is configured to haunt. A thin groove 56 is formed in the chuck member 52, and an outer circumferential groove 58 (see FIG. 1) in the circumferential direction is formed in the center of the outer peripheral surface of the chuck unit 22 so as to be in line with the narrow groove 56. It is set up. A retaining ring 60 is fitted into the narrow groove 56 and the outer circumferential groove 58 to prevent the chuck member 52 from slipping out of the circular hole 50 due to centrifugal force when the chuck unit 22 rotates. Further, a permanent magnet piece 62 for holding the chuck member 52 in a slidable manner on the tapered bottom surface of the accommodation hole 54 of the friction ring 42 is embedded therein.

The operation of attaching and detaching the winding tube to the outer circumference of the chuck unit 22 is performed as follows.
When high-pressure compressed air is supplied from a compressed air source to the air cylinder 26a through the air passage 24, ventilation passage and long ventilation groove of the winding shaft 12, and the ventilation annular groove 32 and ventilation hole 36 of the cylinder unit 16, the upper half of FIG. As shown on the left side of the figure, the piston 30a of the air cylinder 26a advances toward the friction ring 42, and pushes the friction ring 42 against the elastic force of the coil spring 44 to the back of the chuck unit 22 (the back right in the drawing). Push it all the way. As the friction ring 42 slides, the holding position of the chuck member 52 on the tapered bottom surface of the accommodation hole 54 changes from upward to downward while slidingly contacting the tapered bottom surface of the accommodation hole 54 of the friction ring 42. and move in the radial direction (centripetal direction). As a result, the chuck member 52 is retracted into the circular hole 50 on the outer periphery of the chuck unit 22. In this state, after inserting and arranging the winding tube (not shown) on the outer circumferential side of the chuck unit 22, when the supply of compressed air to the air cylinder 26a is stopped, as shown on the right side of the upper half of FIG. , the friction ring 42 moves toward the air cylinder 26a due to the resilient force (restoring force) of the coil spring 44, and the piston 30a retreats. As the friction ring 42 moves in the direction of the air cylinder 26a, the chuck member 52 slides into contact with the tapered bottom surface of the accommodation hole 54 of the friction ring 42, and the holding position on the tapered bottom surface of the accommodation hole 54 moves from below to above. and moves in the radial direction (centrifugal direction). With this operation, the chuck member 52 comes into a state in which its upper part (top) protrudes from inside the circular hole 50 on the outer periphery of the chuck unit 22, and the upper part of the chuck member 52 comes into contact with the inner peripheral surface of the winding tube, and the six The winding tube is integrally held by the chuck unit 22 via the chuck member 52 . When the upper part of the chuck member 52 comes into contact with the inner peripheral surface of the winding tube, the friction ring 42 stops moving toward the air cylinder 26a. When the winding tube is to be removed from the chuck unit 22 after winding up the sheet-like product onto the winding tube, high-pressure compressed air is supplied from the compressed air source to the air cylinder 26a, and the chuck member 52 is moved by the above-described operation. The chuck unit 22 is pulled into the circular hole 50 on the outer periphery.

Note that when winding a sheet product onto the winding tube attached to the chuck unit 22, the winding tube is held integrally with the chuck unit 22 by the chuck member 52 (as shown on the right side of the upper half of FIG. 2). air from the compressed air source to the air cylinder 26a through the air passage 24, ventilation passage and long ventilation groove of the winding shaft 12, as well as the ventilation annular grooves 32, 34 and ventilation holes 36, 38 of the cylinder unit 16, so that the , 26b are supplied with relatively low pressure compressed air. Then, the air cylinders 26a and 26b are operated to press the piston 30a against the friction ring 42 of the chuck unit 22 and the piston 30b against the friction ring 48. In this state, the rotational power of the cylinder unit 16 that rotates integrally with the winding shaft 12 is applied to the frictional force between the tip of the piston 30a of the cylinder unit 16 and the friction ring 42 of the chuck unit 22, and the tip of the piston 30b. The frictional force between the friction ring 48 and the friction ring 48 is transmitted to the left and right chuck units 22, 22, and generates winding torque on the winding tube held by the chuck unit 22.

Next, a configuration for adjusting the contact area between the pistons 30a, 30b of the plurality of air cylinders 26a, 26b and the friction rings 42, 48 in order to equalize the torque generated in the chuck unit 22 will be described. In this embodiment, the adjustment operation is not performed for the 12 air cylinders 26a whose tips of the pistons 30a press against the friction ring 42, and the pistons 30b are removed from the cylinder holes 28b for the other 6 air cylinders 26b. The contact area with the friction ring 48 is adjusted so that advance can be inhibited. This configuration and operation will be described below with reference to FIGS. 3 to 12-7.

The adjustment ring 18 and the annular plate 20 are assembled to the cylinder unit 16, as shown in FIGS. 3, 4, and 5, which show a left side view, a front view, and a front view of the cylinder block 14 in a separated state. As shown, the distal ends of the pistons 30b of the plurality of air cylinders 26b provided in the cylinder unit 16 are formed by processing, thereby making it possible to prevent the pistons 30b from advancing from the cylinder holes 28b.

As shown in FIGS. 5 and 6, the outer periphery of the cylinder unit 16 on the side surface where the cylinder holes 28b of the six air cylinders 26b are opened is formed into a three-stage stepped surface. Further, six screw holes 64 are bored in the side surface of the cylinder unit 16 and are equally spaced in the circumferential direction. As shown in FIG. 7, an engaging portion 66 is formed in the piston 30b of the air cylinder 26b by cutting out the outer side facing the outer circumferential surface of the cylinder unit 16 along the axial direction from the tip surface thereof. There is. This engaging portion 66 is formed such that a notch surface 68 is substantially flush with the second-stage outer circumferential surface 16b of the cylinder unit 16. Further, a notch 70 is formed on the inner side of the piston 30b facing the inner circumferential surface of the cylinder unit 16, and a notch 70 is formed in the flange 71a (see FIG. 2) of the flange collar 71. By engaging, rotation of the piston 30b is inhibited.

The adjustment ring 18 has an inner diameter dimension such that its inner circumferential surface 18a is slidably fitted to the outer circumferential surface 16a of the first stage of the cylinder unit 16. Further, as shown in FIG. 8, the adjustment ring 18 has six arc-shaped locking portions 72a to 72f integrally formed on one side (left side in FIG. 5) so as to protrude in the centripetal direction . It has been extended. The six locking portions 72a to 72f are provided so that their respective arcuate tips are located on one circumference, and the arcuate tips are located on the outer peripheral surface 16b of the second stage of the cylinder unit 16. It is formed with dimensions corresponding to. The arc-shaped locking portions 72a to 72f are equally spaced in the circumferential direction of the adjustment ring 18, and are formed with different lengths in the circumferential direction, as will be described later. The adjusting ring 18 is rotatably attached to the cylinder unit 16 with the arcuate tips of the locking parts 72a to 72f slidingly contacting the second stage outer peripheral surface 16b of the cylinder unit 16. Since the notch surface 68 of the piston 30b of the air cylinder 26b is formed to be substantially flush with the second stage outer circumferential surface 16b of the cylinder unit 16, when the adjustment ring 18 is rotated, The arcuate tips of the stop portions 72a to 72f do not come into contact with the cutout surface 68 of the piston 30b. A very small guide protrusion 74 is formed on the annular side surface of the adjustment ring 18, and a sliding protrusion 76 is formed at a position making an angle of 180° with respect to the guide protrusion 74. Further, a plurality of holding holes 78 into which the coil springs 80 are fitted are formed on the side surface of the adjustment ring 18 facing the cylinder unit 16 .

The annular plate 20 is formed to have an inner diameter such that its inner circumferential portion 20 a fits into the third-stage outer circumferential surface 16 c of the cylinder unit 16 . As shown in FIG. 9, the inner circumferential portion 20a of the annular plate 20 is cut out in a semicircular shape at a portion corresponding to the cylinder hole 28b of the air cylinder 26b of the cylinder unit 16. Six bays 82 are formed so as not to obstruct the advancing movement, and six small through holes are formed between the adjacent bays 82, 82 at positions corresponding to the screw holes 64 of the cylinder unit 16. 84 is drilled. Further, the annular plate 20 has seven small holes 86 arranged in an arc shape into which the guide protrusions 74 fit sequentially in response to changes in the rotational angular position of the adjustment ring 18 with respect to the cylinder unit 16. An arc-shaped elongated hole 88 into which the sliding protrusion 76 fits and makes sliding contact is formed at a position making an angle of 180° with respect to the seven small holes 86 .

When assembling the cylinder block 14, as shown in FIG. At the same time, the sliding protrusion 76 is fitted into the elongated hole 88 and pressed against it, and the coil spring 80 is fitted into the holding hole 78 of the adjustment ring 18. Next, the adjustment ring 18 to which the annular plate 20 is joined is attached to the cylinder unit 16, and the six bay parts 82 of the annular plate 20, the cylinder holes 28b of the six air cylinders 26b of the cylinder unit 16, and the annular The six small through holes 84 of the plate 20 and the six screw holes 64 of the cylinder unit 16 are aligned and assembled, and the screws 90 are inserted into the small through holes 84 of the annular plate 20 and screwed into the screw holes of the cylinder unit 16. 64, the adjustment ring 18 and annular plate 20 are integrated with the cylinder unit 16.

In the cylinder block 14 configured in this way, the adjustment ring 18 is urged from the cylinder unit 16 toward the annular plate 20 by the elastic force of the coil spring 80, and as shown in FIG. A gap 92 is formed between the opposing sides of the cylinder unit 16 and the adjustment ring 18. The size of the gap 92 is greater than the height of the guide protrusion 74 of the adjustment ring 18 and smaller than the height of the sliding protrusion 76. By making a slight movement in the direction of eliminating the gap 92 against the force, the guide protrusion 74 is separated from the annular plate 20 and removed from the small hole 86, and the cylinder is moved while the sliding protrusion 76 is in sliding contact with the elongated hole 88. It can be rotated relative to the unit 16 and the annular plate 20. Then, when the guide protrusion 74 of the adjustment ring 18 is located in another small hole 86 of the annular plate 20, the force applied to the adjustment ring 18 is released, and the elastic force of the coil spring 80 is used. The adjustment ring 18 presses against the annular plate 20, and the guide protrusion 74 of the adjustment ring 18 fits into another small hole 86 of the annular plate 20. Through such a series of operations, the rotational angular position of the adjustment ring 18 with respect to the cylinder unit 16 and the annular plate 20 can be changed. Note that when rotating the adjustment ring 18, the piston 30b of the air cylinder 26b is retreated into the cylinder hole 28b, and in this state, the operation of changing the rotational angular position of the adjustment ring 18 with respect to the cylinder unit 16 is performed. be exposed.

By the above-described operation, the rotation angle position of the adjustment ring 18 with respect to the cylinder unit 16 and the annular plate 20 can be changed, but as shown in FIG. 72f are formed with different length dimensions in the circumferential direction. Therefore, by changing the rotational angular position of the adjustment ring 18 with respect to the cylinder unit 16, the engagement portion of the piston 30b can be adjusted for the six air cylinders 26b of the cylinder unit 16, as shown in FIG. 10(a). 66 of the adjustment ring 18, or as shown in FIG. The operation of the piston 30b can be selectively inhibited or permitted by detaching the piston 30b. When relatively low-pressure compressed air is supplied to the six air cylinders 26b, the operation of the six pistons 30b is selectively inhibited or allowed, so that the friction ring 48 of the chuck unit 22 The number of pistons 30b whose tips come into contact with each other is changed. This makes it possible to adjust the contact area between the friction ring 48 and the tips of the plurality of pistons 30b, and adjust the rotational power transmitted from the cylinder unit 16 to the chuck unit 22 by the frictional force between them. By adjusting the winding torque of the sheet-like product onto the winding tube for each chuck unit 22, it is possible to equalize the winding torque in the plurality of chuck units 22 arranged in parallel on the winding shaft 12.

In this embodiment, the number of actuated pistons 30b can be changed from 6 to 0, and as shown in FIG. 18 indicators 94 indicating a plurality of rotation angle positions are attached, and a marked line 96 is engraved on the outer peripheral surface of the annular plate 20. In the index 96, a scale of "0" indicates a case where the number of actuated pistons 30b is three and the number of pistons 30b whose operation is suppressed is three, and "+1", "+2", " +3” indicates that the number of actuated pistons 30b is 4, 5, and 6, respectively, and “-1”, “-2”, and “-3” indicate that the number of actuated pistons 30b is 4, 5, and 6, respectively. Cases where the number is 2, 1, or 0 are shown. The angular spacing of the scales on the index 94 corresponds to the angular spacing of the seven small holes 86 in the annular plate 20. As shown in FIG. 11, indicators 98 indicating the seven rotation angle positions of the adjustment ring 18 with respect to the cylinder unit 16 are attached to the outer peripheral surface of the cylinder unit 16, and marked lines 100 are attached to the outer peripheral surface of the adjustment ring 18. may be engraved.

Regarding the difference in length dimension in the circumferential direction of the locking portions 72a to 72f in the adjustment ring 18 and the angular spacing of the small holes 86 in the annular plate 20 (the angular spacing of the scales in the index 94), The explanation will be given by illustrating specific numerical values with reference to FIGS. 8 and 9. In this case, the radius of the virtual circle formed by the arcuate tips of the locking parts 72a to 72f of the adjustment ring 18 is r, and the arc of the locking parts 72a to 72f with respect to the center (rotation center) of the adjustment ring 18 is defined as r. If the angle formed is θ°, the arc length of the locking portions 72a to 72f=r×(πθ/180). The length dimensions of the locking portions 72a to 72f in the circumferential direction vary depending on the size of the radius r of the virtual circle and therefore the size of the adjustment ring 18. Therefore, if we replace the difference in the length dimension of the locking parts 72a to 72f with the difference in the angle θ formed by the circular arc with respect to the center of the adjustment ring 18, the angle formed by the circular arc of the locking parts 72a to 72f is a = 5°, b = 7.5°, c = 15°, d = 22.5°, e = 30°, and f = 37.5°. Further, the angles formed by the arcs between the adjacent locking parts 72a to 72f are A=60°, B=52.5°, C=40°, D=37.5°, E=30°, and F=22°. It was set at .5°. The angular spacing of the small holes 86 in the annular plate 20 is set to p=7.5°, and by rotating the adjustment ring 18 by 7.5°, the number of actuated pistons 30b is changed by one. I made it possible. Note that the angles formed by the arcs of the locking portions 72a to 72f in the adjustment ring 18 and the angular spacing of the small holes 86 in the annular plate 20 were determined through trial and error. If the number of 26b changes, it becomes necessary to find the appropriate value again through trial and error.

12-1 to 12-7 show various modes in which the piston 30b of the air cylinder 26b of the cylinder unit 16 and the locking portions 72a to 72f of the adjustment ring 18 engage with each other. In these figures, the annular plate 20 is removed from the cylinder block 14 and viewed from the adjustment ring 18 side, and the seven small holes 86 and elongated holes 88 of the annular plate 20 are shown for reference. is shown by an imaginary line (double-dashed line).

In FIG. 12-1, the engaging portions 66 of the three pistons 30b engage with the locking portions 72b, 72d, and 72e of the adjustment ring 18, and the three pistons 30b operate and the three pistons 30b operate. Indicates a state in which the system is being suppressed. At this time, the scale of the index 96 indicates "0". When the adjusting ring 18 is rotated counterclockwise by 7.5 degrees with respect to the cylinder unit 16 from the state shown in FIG. 12-1, the two pistons 30b are engaged as shown in FIG. 12-2. The portion 66 engages with the locking portions 72e and 72f of the adjustment ring 18, resulting in a state in which four pistons 30b operate and two pistons 30b are inhibited from operating. At this time, the scale of the index 96 indicates "+1". When the adjusting ring 18 is rotated counterclockwise by 7.5 degrees from the state shown in FIG. 12-2, the engaging portion 66 of one piston 30b is rotated by the adjusting ring as shown in FIG. 12-3. 18 locking portions 72f, five pistons 30b operate and one piston 30b is inhibited from operating. At this time, the scale of the index 96 indicates "+2". Further, when the adjustment ring 18 is rotated counterclockwise by 7.5 degrees from the state shown in FIG. 12-3, the locking portions 72a to 72f of the adjustment ring 18 are The piston 30b engaged by the engaging portion 66 is no longer engaged, and all six pistons 30b are in an operating state. At this time, the scale of the index 96 indicates "+3". Furthermore, when the adjusting ring 18 is rotated clockwise by 7.5 degrees with respect to the cylinder unit 16 from the state shown in FIG. 12-1, the engagement of the four pistons 30b is changed as shown in FIG. The mating portions 66 engage with the locking portions 72c, 72d, 72e, and 72f of the adjustment ring 18, resulting in a state in which two pistons 30b operate and four pistons 30b are inhibited from operating. At this time, the scale of the index 96 indicates "-1". When the adjusting ring 18 is rotated clockwise by 7.5 degrees from the state shown in FIG. are engaged with the locking portions 72b, 72c, 72d, 72e, and 72f, so that one piston 30b operates and five pistons 30b are inhibited from operating. At this time, the scale of the index 96 indicates "-2". Furthermore, when the adjusting ring 18 is rotated clockwise by 7.5 degrees from the state shown in FIG. It engages with the locking portions 72a, 72b, 72c, 72d, 72e, and 72f of the ring 18, resulting in a state in which not one piston 30b operates but all six pistons 30b are inhibited from operating. At this time, the scale of the index 96 indicates "-3".

In the embodiment described above, the configuration is such that the operation of the piston 30b of all six air cylinders 26b is suppressed or permitted, but the operation of the piston 30b of only a part of the six air cylinders 26b is inhibited. It may be configured such that it can be suppressed. Further, in the above embodiment, the air cylinder 26b in which the cylinder hole 28b was opened on one annular side surface of the cylinder unit 16 was described, but the air cylinder 26b in which the cylinder hole 28a was opened in the other annular side surface of the cylinder unit 16 was described. A similar configuration can be applied to all or part of 26a.

The device for winding sheet-like products into a winding tube according to the present invention is used by being attached to a shredding slitter that cuts sheet-like products such as long belt-like films into narrow widths, and is used for packaging films, wrappers, etc. It is used in many establishments that handle various sheet products such as films, release films and other films, adhesive tapes and other tapes, and wrapping paper and other papers.

10 Winding shaft part 12 Winding shaft 14 Cylinder block 16 Cylinder unit 18 Adjustment ring 20 Annular plate 22 Chuck unit 24 Hollow part of winding shaft 26a, 26b Air cylinder 28a, 28b Air cylinder cylinder hole 30a, 30b Air cylinder piston 32, 34 Vent annular groove of cylinder unit 36, 38 Vent hole of cylinder unit 40 Bearing 42, 48 Friction ring 44 Coil spring 52 Chuck member 64 Threaded hole 66 Engagement part of piston 72a to 72f Locking part of adjustment ring 74 Guide projection of adjustment ring 76 Sliding protrusion of adjustment ring 80 Coil spring 82 Bay part of annular plate 86 Small hole of annular plate 88 Elongated hole of annular plate 92 Gap between cylinder unit and adjustment ring 94 , 98 index 96, 100 gauge line

Claims (4)

A ring-shaped cylinder unit is fixed concentrically to a rotatably driven hollow winding shaft and rotates integrally with the winding shaft; A plurality of ring-shaped chuck units that integrally hold the winding tube detachably from the inner circumferential surface thereof with a plurality of chuck members disposed on the winding shaft are alternately arranged in parallel along the axial direction of the winding shaft,
A plurality of cylinder holes are formed around the circumference of the cylinder unit and are arranged parallel to the axis of the winding shaft and open on the annular side surface facing the chuck unit. An air cylinder is provided in which a piston is inserted, the tip of which advances and retreats from an annular side opening by compressed air supplied to the cylinder hole through an air path formed in the pipe wall of the winding shaft and the cylinder unit, and A friction ring is provided on the chuck unit so as to rotate integrally with the chuck unit, with which the tip of the piston of the cylinder unit presses directly or indirectly,
The rotational power of the cylinder unit, which rotates integrally with the rotationally driven winding shaft, is transmitted to the chuck unit by the frictional force between the tip of the piston of the cylinder unit and the friction ring, and the rotational power is transmitted to the chuck unit. In a device for winding a sheet-like product onto a winding tube, the winding tube held through the chuck member is rotated to wind the sheet-like product onto the winding tube,
An adjustment ring having an inner diameter dimension that does not inhibit the movement of the pistons of the plurality of air cylinders is provided on the annular side surface of the cylinder unit so as to be slidable concentrically with the cylinder unit and circumferentially with respect to the cylinder unit. Put it on,
An engaging portion is formed in each piston of the plurality of air cylinders by cutting out the outer side facing the outer peripheral surface of the cylinder unit along the axial direction of the piston from the tip end surface of the piston, and A plurality of locking portions corresponding to each piston of the plurality of air cylinders are provided on the adjustment ring so as to protrude in a centripetal direction of the adjustment ring,
Each locking part of the adjustment ring has a different length dimension in the circumferential direction of the adjustment ring, and the rotation angle position of the adjustment ring with respect to the cylinder unit is changed multiple times, thereby adjusting the piston of each air cylinder. The locking portions of the adjustment ring are set to be sequentially engaged with or disengaged from the engaging portion, and the operation of the piston is selectively inhibited. By changing the number, the contact area between the friction ring and multiple pistons can be adjusted.
Winding of a sheet-like product onto a winding tube, characterized in that indicators indicating a plurality of rotational angular positions of the adjustment ring with respect to the cylinder unit are attached to the outer peripheral surface of the adjustment ring or the outer peripheral surface of the cylinder unit. Device. The winding tube according to claim 1, wherein the cylinder unit is provided with six or more air cylinders equally spaced in the circumferential direction, and the adjustment ring is provided with the same number of locking parts as the air cylinders. Winding device for sheet products. The cylinder unit is provided with six air cylinders, the adjustment ring is provided with six locking portions, and the adjustment ring is rotated in one direction with respect to the cylinder unit with the adjustment ring as a rotation center around the axial position of the adjustment ring. Each time the adjustment ring is rotated by 5 degrees, the number of air cylinders whose pistons are inhibited increases by one, and the adjustment ring is moved in the opposite direction to the cylinder unit with its axial center position as the center of rotation. 3. The winding tube according to claim 2, wherein the six locking portions are formed so that the number of air cylinders whose pistons are inhibited decreases by one each time the piston is rotated by 7.5 degrees. Winding device for sheet products. An annular plate is fixed to the cylinder unit so as not to interfere with the rotational movement of the adjustment ring and to allow slight movement of the adjustment ring in the axial direction, and the adjustment ring A guide convex portion and a sliding protrusion are formed on an annular side surface facing the annular plate, and the guide convex portion is formed on the annular plate in response to a change in the rotational angular position of the adjustment ring with respect to the cylinder unit. A plurality of small holes are arranged in an arc shape, and the sliding protrusions fit into the plurality of small holes and slide along with the fitting operation of the guide protrusion into the plurality of small holes. The winding tube according to any one of claims 1 to 3, wherein a contacting arc-shaped elongated hole is formed, and a spring is provided to bias the adjustment ring from the cylinder unit toward the annular plate. Winding device for sheet products.

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