JP2017114597A - Winding collar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structurally-simple winding collar that enables switching between the stop and restoration of a function of transmission of a rotational force to a winding core from a collar body to be reliably performed in a short period of time by a simple operation.SOLUTION: A female screw 10 is formed in a radial direction of an outer peripheral surface of a collar body. A screw 11 is screwed to the female screw 10. On an outer peripheral surface of a retainer 9, an operation hole 13, which is formed in a shape smaller than a diameter of the screw 11, is formed in a position corresponding to the female screw 10, when a sphere 7 is in a predetermined position at a deep part of an inclined groove 6.SELECTED DRAWING: Figure 6

Description

   The present invention provides a winding shaft for supporting a winding core for each of a plurality of belt-like sheets, and winding the belt-like sheets all around the winding core at the outer peripheral surface of a central drive shaft constituting the winding shaft. It relates to the winding collar to be installed.

Conventionally, as the above-described winding shaft, there is one in which a large number of winding collars 2 are arranged in a line on the outer peripheral surface of the center drive shaft 1 as shown in FIG. The winding core C is mounted on the outer periphery of the winding collar 2, and the center drive shaft 1 is rotationally driven during winding of the belt-like sheet. As shown in FIGS. 13 and 14, the winding collar 2 is an annular collar body that is rotatably attached to the central drive shaft 1 by a bearing 3 and receives rotational force from the central drive shaft 1 through rotational force transmitting means 4. 5 and inclined grooves 6 formed in a plurality of locations in the circumferential direction of the outer peripheral surface of the collar body 5 and extending in the circumferential direction of the collar body 5, and a core disposed on the bottom surface of each inclined groove 6. The spherical body 7 as a movable gripping body for gripping the inner peripheral surface of C, and the spherical body 7 can be moved along the bottom surface between the deep part and the shallow part of the inclined groove 6 at each position corresponding to the spherical body 7 and cannot be dropped off. Some of them have a holding part 8 for holding the ring body and an annular retainer 9 rotatably attached to the outer peripheral surface of the collar body 5.

In the winding collar 2, the rotational force of the center drive shaft 1 acts on the collar body 5 during winding, and the tension of the belt-like sheet acts on the winding core C so as to prevent its rotation. In addition, the retainer 9 rotates with respect to the collar body 5 in the direction of the arrow shown in FIG. 13, and the sphere 7 automatically moves to the shallow portion of the inclined groove 6 so as to largely protrude from the outer peripheral surface of the retainer. The circumferential surface is pressed and gripped, whereby the core C is restrained on the collar body 5, and the core C and the collar body 5 rotate together and are received by the collar body 5 from the central drive shaft 1. The rotational force can be transmitted to the core C.

The means 4 for transmitting the rotational force to the winding collar 2 includes a friction piece 19 held at the central drive shaft 1 so that the upper end of the winding shaft can protrude from the outer peripheral surface of the central drive shaft 1, and the friction piece 19 It consists of an air tube 20 that can be inflated and contracted by compressed air to push it up in contact with the lower end, and can transmit a rotational force according to the frictional force between the friction piece 19 and the inner peripheral surface of the collar body 5. (See Patent Document 1 below).

  In general, the widths of the winding collars 2 are the same, and substantially the same rotational force is transmitted from the central drive shaft 1 to the winding collars 2 via the rotational force transmitting means 4. The rotational force transmitted to C is also substantially constant. The winding core C has the same or substantially the same width as the width of the belt-shaped sheet to be wound. The rotational force, that is, the winding torque generated in the winding core C attached to the winding shaft is proportional to the number of winding collars 2 that hold the inner periphery of the winding core C.

Therefore, on the premise that the winding core is mounted at a normal position with respect to the winding collar, the width of the plurality of belt-like sheets that are simultaneously wound using one winding shaft is equal to the width of the winding collar. When it is an integral multiple, the winding tension per unit width generated in each belt-like sheet is automatically substantially equal regardless of the width. Such a winding shaft is often used for winding a wide strip sheet while dividing it into a plurality of strips with a slitter.

  However, recently, the specifications regarding the number of strips and the width of the belt-like sheet wound at the same time can be variously changed. Further, it is required to deal with such a change in the winding specification with only one winding shaft. Therefore, even if the belt-like sheets that are wound all at once have the same width, the width is often not an integral multiple of the width of one winding collar. Therefore, the belt-like sheet deviates from the normal position with respect to the winding collar group and reaches the winding shaft, and the end surface of the winding core C can be arranged on the sphere 7 of the winding collar 2 as shown in FIG. It may be unavoidable. In that case, if the core is a paper tube, during winding of the belt-like sheet, the pressing force by the sphere 7 concentrates on the corners of the end surface and the inner peripheral surface of the paper tube, and plastic deformation or breakage occurs in that portion. At the same time, since the rotational force of the collar body 5 of the winding collar 2 cannot be transmitted to the core C, the necessary winding tension cannot be obtained, and the belt-type sheet winding roll becomes defective. Is produced. Further, when the winding core is relatively hard such as a plastic tube, the contact portion between the sphere 7 protruding in the radial direction of the winding collar 2 and the winding core C is inclined. The component force in the width direction of the core acts on the core C, so that the core C is easily displaced in the width direction with respect to the winding collar 2 during winding of the belt-like sheet. In particular, when a small winding tension is required, the winding core is liable to be displaced in the width direction, whereby a step is generated on the end face of the winding roll, and the winding roll tends to be defective.

  Here, in order to solve the above-described problems, it is only necessary to make it possible to stop and restore the rotational force transmission function from the color main body of the winding collar to the core. That is, it is only necessary that the rotational force transmitted from the central drive shaft to the collar body cannot be transmitted from the collar body to the core, or can be transmitted from the collar body to the core. That is, when the end surface of the winding core is disposed at an inappropriate position with respect to the winding collar on the winding shaft described above, the winding collar corresponding to the end surface of the winding core is rotated from the collar body to the winding core. Before the winding core is installed, it is impossible to transmit the wire. And, in order to prevent the winding tension per unit width of the belt-like sheet to be wound all at once, the end face of the winding cores that are simultaneously mounted on one winding shaft is in relation to the winding collar. For the cores other than the core disposed at an inappropriate position, select the appropriate winding collar that holds the core, and the rotational force from the collar body of the winding collar to the core. In such a manner that the number of winding collars that can transmit the rotational force to a single core is made in advance.

In this way, as a conventional winding collar that can be switched between stopping and resuming the rotational force transmission function from the collar body to the winding core, the winding collar body is formed with a depressed portion for accommodating the leaf spring. A protrusion in the retainer is inserted by inserting a rod-shaped operating member from an opening formed in the retainer, pushing down the leaf spring against its elasticity, and displacing the free end of the leaf spring below the tip of the protrusion. Is not engaged with the free end of the leaf spring, and in this state, the retainer is rotated clockwise by a predetermined angle with respect to the collar body, so that the protrusion engages with the hole at the tip of the leaf spring. In some cases, the retainer is restrained with respect to the collar body in a state where the sphere is arranged at a predetermined position in the deep part of the inclined groove. (See Patent Document 2 below).

  However, in recent years, the winding width of the belt-like sheet has been diversified, and a narrow belt-like sheet has to be wound, and the movable gripper is used to support the inner peripheral surface of the narrow core of the belt-like sheet with the movable gripper. The space between them must be narrowed, and the width of the recessed portion formed in the winding collar body is also narrowed. If the width of the depressed portion becomes narrow, it is necessary to make a thin plate spring to be accommodated in the depressed portion, and it becomes difficult to provide a hole or a notch for inserting a pin on the leaf spring. There was room for further improvement in the method used.

JP 2001-106397 A JP 2011-213488 A

  Therefore, the present invention stops and restores the winding function to the core even when it is difficult to embed a leaf spring that has been processed to lock the retainer to the winding collar body because the winding collar width is narrow. It is an object of the present invention to provide a winding collar with a simple structure that can be switched in a short time with a simple operation.

  The winding collar of the present invention is rotatably mounted on a central drive shaft that constitutes a winding shaft that supports a core of each of a plurality of belt-like sheets by penetrating and winding the belt-like sheets all around the core. And an annular collar body that receives a rotational force from the central drive shaft via a rotational force transmission means, and a circumferential direction of the collar body formed at a plurality of circumferential positions on the outer peripheral surface of the collar body. A slanting groove extending on the bottom, a movable gripping body disposed on the bottom surface of each slanting groove, and a movable gripping body between the deep part and the shallow part of the slanting groove at each position corresponding to the movable gripping body. An annular retainer rotatably mounted on the outer peripheral surface of the collar body, the movable gripper moving to the shallow portion of the inclined groove. By engaging the inner peripheral surface of the core In the winding collar capable of transmitting the rotational force received by the collar body to the core, a female screw formed in the radial direction of the outer peripheral surface of the collar body, and a screw screwed to the female screw, When the movable gripper is in a predetermined position in the deep part of the inclined groove, an operation hole formed smaller than the diameter of the screw is provided on the outer peripheral surface of the retainer. .

  According to the present invention, since the retainer can be selectively restrained with respect to the collar body and in a rotatable state, the movable gripper cannot grip the inner peripheral surface of the core and can grip it. It can be. In addition, since the screw is screwed into the female screw opened in the collar body inside the retainer and operated from a hole smaller than the diameter of the screw opened outside the retainer, there is no fear of scattering of parts due to centrifugal force. Further, by reducing the number of parts, the structure of the winding collar can be further simplified, processing and assembly can be simplified, and a winding collar that is less likely to fail can be obtained. In addition, even if the seat is loosened by forming a seat on the portion of the retainer where the screw hits, the retainer cannot be rotated because of the seat. Therefore, regardless of the number of movable grippers that grip the inner peripheral surface of the core, switching between stopping and resuming the rotational force transmission function from the collar body to the core is ensured in a short time with a simple operation. Therefore, it is possible to provide a winding collar that is simple in structure and inexpensive. And by using the winding axis | shaft provided with the winding color | collar of this invention, it becomes possible to wind a several strip | belt-shaped sheet | seat simultaneously with sufficient quality, and can aim at the improvement of a yield.

FIG. 1 is a front view of a winding collar according to an embodiment of the present invention. FIG. 2 is a plan view of a winding collar according to an embodiment of the present invention. 3 is a cross-sectional view taken along the line CC of FIG. 1 showing the main part of the winding collar. 4 is a cross-sectional view taken along arrow BB in FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG. 2 showing a state in which the engaging portion is separated from the engaged portion. 6 is a cross-sectional view taken along the line AA in FIG. 2 showing a state where the engaging portion and the engaged portion are engaged. FIG. 7 is a cross-sectional view of a main part of a winding collar as an example of processing according to the present invention. FIG. 8 is a plan view of a winding collar according to another embodiment. 9 is a cross-sectional view taken along line A1-A1 in FIG. 10 is a cross-sectional view taken along the line A2-A2 in FIG. 11 is a cross-sectional view taken along the line DD in FIG. FIG. 12 is a front view showing a part of the friction winding shaft. 13 is a cross-sectional view taken along the line EE in FIG. 14 is a cross-sectional view taken along line FF in FIG.

  FIG. 1 is a front view of a winding collar according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a cross-sectional view taken along the line CC of FIG.

4 is a cross-sectional view taken along arrow BB in FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG. 2 showing a state in which the engaging portion is detached from the engaged portion, and FIG. 6 shows a state in which the engaging portion and the engaged portion are engaged. It is AA arrow sectional drawing in FIG. The illustrated winding collar 2 is adapted to the friction winding shaft shown in FIGS. 12 to 14. In this embodiment, a spherical body 7 as a movable gripping body is formed on the bottom surface of the inclined groove 6 of the collar body 5. The spherical body 7 is arranged along the bottom surface between the deep part and the shallow part of the inclined groove 6 and is held by the holding part 8 of the annular retainer 9 so as not to fall off. When the winding core 2 restrains the core C, the retainer 9 is rotated so that the sphere 7 rolls in the direction in which the bottom surface of the inclined groove 6 gradually becomes shallower. When releasing the winding core C from the restraint of the winding collar 2, the retainer 9 is rotated so that the sphere 7 rolls in the direction of gradually deepening the bottom surface of the inclined groove 6.

Then, in order to enable the switching of the rotational force transmission function from the collar body 5 to the core C to be stopped and restored, when the sphere 7 held by the retainer 9 is at a predetermined position deep in the inclined groove 6, the retainer A female screw 10 is formed in a radial direction at a location where the inclined groove 6 is not formed on the outer peripheral surface of the collar body 5 covered with 9, and the screw 11 is screwed together. The retainer 9 is positioned at a position corresponding to the female screw 10. The operation hole 13 is formed from the outer peripheral surface to the inner peripheral surface.

The operation hole 13 is formed smaller than the diameter of the screw 11 screwed with the female screw 10, and the screw 11 cannot pass through the operation hole 13. In the winding collar 2, the outer periphery of the collar body 5 is arranged along the row of inclined grooves 6 so that the sphere 7 automatically returns to the deep part of the inclined groove 6 when the core C is not covered with the collar body 5. The depression 12 is provided, and a compression coil spring 22 for energizing the retainer 9 with respect to the collar body 5 in a direction in which the inclined groove 6 is gradually deepened is accommodated. The stop member 17 is formed of a protrusion provided on the inner peripheral surface of the retainer 9, and the stop member 17 is inserted into a stop member hole 21 formed on the outer peripheral surface of the retainer 9 so that the tip thereof protrudes from the inner peripheral surface of the retainer 9. It is formed by fitting.

  At this time, the depressed portion 12 is not limited as long as the sphere 7 held by the retainer 9 has a length that is the sum of the moving distance between the deep portion and the shallow portion of the inclined groove 6 and the compression amount of the coil spring 22. For the sake of simplicity, the collar body 5 is formed so as to go around the outer peripheral surface.

One end of the compression coil spring 22 accommodated in the depressed portion 12 abuts on the stop member 17, and the other end abuts on a spring pin 18 formed on the collar body 5 to restrict movement. When the coil spring 22 is rotated counterclockwise to constrain the winding core C, the compression coil spring 22 is compressed. When the restraint is released, the spring expands and the sphere 7 rolls in the direction of gradually deepening the bottom surface of the inclined groove 6. Move.

Next, the operation for stopping and restoring the rotational force transmission function from the collar body 5 to the core C in the winding collar 2 configured as described above will be described. The winding collar 2 shown in FIG. 5 is in a state in which a rotational force can be transmitted from the collar body 5 to the core C, and the retainer 9 is not restrained in the rotational direction with respect to the collar body 5.

In this state, the retainer 9 can rotate with respect to the collar body 5 within a certain rotation angle range for allowing the sphere 7 to move to the shallow portion in the counterclockwise direction from the position shown in FIG. .

  In order to make the winding collar 2 unable to transmit the rotational force from the collar body 5 to the winding core C, the retainer 9 is rotated clockwise as shown in FIG. With the hole 13 and the female screw 10 in the same straight line, an operation tool (hexagonal wrench in this embodiment) is inserted, and the screw 11 (holoset in this embodiment) is rotated in the loosening direction in the case of a right screw. .

The loosened screw 11 comes into contact with the retainer 9 before being detached from the collar body 5, and the retainer 9 is restrained with respect to the collar body 5 in a state where the sphere 7 is disposed at a predetermined position in the deep part of the inclined groove 6.

On the other hand, in order to be able to transmit the rotational force from the collar body 5 to the core C, the screw 11 is tightened to be buried in the collar body 5, and the retainer 9 is rotated in the rotational direction with respect to the collar body 5. What is necessary is just to make it the state which is not restrained by.

The positional relationship between the female screw 10 formed in the collar body and the operation hole 13 formed in the retainer 9 at this time is such that the predetermined position of the deep groove 6 of the spherical body 7 shown in FIG. However, if the spherical body 7 does not restrain the retainer 9, the operation hole 13 may be formed in the retainer 9 at a position corresponding to the female screw 10 of the collar body 5.

Further, when the retainer 9 is restrained by the take-up collar 2, for example, a countersink drill as shown in FIG. If the seat 14 is provided at 23, even if the screw 11 is loosened, the seat 14 or more does not move.

8 to 11 show another embodiment of the present invention.

In this winding collar 2, a plurality of inclined grooves 6 provided on the outer peripheral surface of the collar body 5 at intervals in the circumferential direction are formed so that the central portion becomes deeper in the groove extending direction and gradually becomes shallower as it approaches both ends. Thus, the sphere 7 held by the holding portion 8 of the annular retainer 9 so as not to fall off moves the inclined groove 6 to the shallow part of the groove and is pushed up by the bottom surface of the groove, either forward or backward with respect to the collar body 5. Even if it rotates in the direction, the sphere 7 presses the inner peripheral surface of the core C so that the core C can be firmly held on the collar body 5.

Further, the color main body 5 can be divided into a color main body 5a and a color main body 5b, so that parts can be easily assembled. A collar 5c is formed at one end of the collar body 5a, and a female screw 10a is formed on the outer peripheral surface of the other end of the collar body 5a so as to penetrate the collar body 5a. A set screw 25 is screwed into the female screw 10a, and the collar body 5b is fitted and fastened and fixed by the set screw 25.

In order to tighten and fix the collar body 5a and the collar body 5b by operating the set screw 25, the operation hole 13a and the set screw 25 are aligned, and an operation tool (in this embodiment, a hex wrench) is inserted. In the case of a right screw, the set screw 25 (holoset in this embodiment) rotates in the tightening direction. At that time, the operation hole 13a is formed in the retainer 9 so as to be smaller than the diameter of the set screw 25, and even if the set screw 25 is loosened, it does not fall off and scatter.

In the winding collar 2, the sphere 7 automatically returns to the deep part of the inclined groove 6 in the clockwise direction or in the counterclockwise direction when the collar body 5 does not cover the winding core C. The depressions 12 are formed on the outer peripheral surface of the collar body 5 along the rows of the inclined grooves 6, but the distance at which the sphere 7 moves to the shallow part in the clockwise direction and the counterclockwise direction around the deepest part of the inclined groove 6. The depressed portion 12 is provided with two compression coil springs 22 with the stop member 17 interposed therebetween. At that time, one end comes into contact with the stop member 17 inserted from the pin hole formed in the retainer 9 and protrudes into the recessed portion 12, and the other end is one end of the compression coil spring 22 on the wall surface of the recessed portion 12 formed in the collar body. The pins 18 do not have to be formed on the collar body 5 in contact.

The compression coil spring 22 is compressed even if it is rotated clockwise or counterclockwise to restrain the winding core C. When the restraint is released, the spring expands and the sphere 7 becomes the bottom surface of the inclined groove 6. Rolling in the direction of gradually deepening. In the winding collar 2, the central portion in the circumferential direction of the inclined groove 6 is the deepest portion, and when the sphere 7 held by the retainer 9 is in the central portion of the inclined groove 6, a female screw is formed on the outer periphery of the collar body 5 a. 10 is formed. An operation hole 13 is formed from the outer peripheral surface to the inner peripheral surface of the retainer 9 at a position corresponding to the female screw 10 when the sphere 7 is in the central portion of the inclined groove 6.

In the winding collar 2, when the female screw 10 is formed, there is no object formed other than the recessed portion 12 on the outer periphery where the recessed portion 12 of the collar body 5 is formed, and it is also formed in the radial direction. Since there is no object, a deep female screw can be formed. Therefore, the female screw 10 can be formed on the same circumference as the depressed portion 12 without being affected by the inclined groove 6. Further, the operation hole is formed to be smaller than the diameter of the screw screwed with the female screw 10, and the screw cannot pass through the operation hole 13. Bearings 3 are mounted on the inner periphery of the collar body 5a on the collar side and the inner periphery of the body 5b, respectively, so that the collar body 5 can be rotatably mounted on the central drive shaft 1.

   As mentioned above, although this invention was demonstrated with the few Example, the embodiment of this invention is not limited to the above-mentioned Example, It can change variously based on a well-known technique, without changing the summary of invention as needed. In the present invention, for example, the circumferential positional relationship between the female screw formed in the collar body and the hole formed in the retainer is not limited as long as the sphere 7 does not protrude from the outer peripheral surface of the retainer. Further, the number of insertion holes of the female screw and the retainer is not limited. Further, as the movable gripping body, a sliding body that can slide on the bottom surface of the inclined groove may be employed instead of a rolling body such as a sphere or a roller. In addition, the seat has a cylindrical shape by a counterbore drill, but the shape is not limited to a cylinder, and may be a triangular pyramid, or a half of a circular processing tool such as a leuter. It may be circular.

C winding core 1 central drive shaft 2 winding collar 3 bearing 4 rotational force transmitting means 5 collar body 6 inclined groove 7 sphere 8 holding portion 9 retainer 10 female screw 11 screw 12 depressed portion 13 operation hole 14 seat 15 operation member 16 plate Spring 17 Stop member 18 Spring pin 19 Friction piece 20 Air tube 21 Stop member hole 22 Compression coil spring 23 Counterbore drill 25 Set screw

Claims (5)

  A winding core for each of a plurality of belt-like sheets is supported by being penetrated, and is rotatably mounted on a central drive shaft that constitutes a winding shaft for winding the belt-like sheets all around the winding core, and from the central drive shaft. An annular collar body that receives a rotational force via a rotational force transmitting means; and inclined grooves formed in a plurality of locations in the circumferential direction of the outer peripheral surface of the collar body, each extending in the circumferential direction of the collar body; A movable gripping body disposed on the bottom surface of each inclined groove, and the movable gripping body can be moved along the bottom surface between the deep and shallow portions of the inclined groove at each position corresponding to the movable gripping body and dropped off. An annular retainer rotatably mounted on the outer peripheral surface of the collar body, the movable gripper moving to a shallow portion of the inclined groove and having an inner peripheral surface of the winding core. By engaging the collar body. In a winding collar capable of transmitting a rotational force to the winding core, a female screw formed in a radial direction of the outer peripheral surface of the collar body, a screw screwed to the female screw, and an outer peripheral surface of the retainer, A winding collar comprising an operation hole formed smaller than a diameter of the screw at a position corresponding to the female screw when the movable gripper is at a predetermined position in a deep part of the inclined groove. The winding collar according to claim 1, wherein the retainer has a countersink on an inner peripheral surface through which the operation hole passes. A recessed portion formed along the row of the inclined grooves in a portion of the outer peripheral surface of the collar body covered with the retainer, a first elastic body provided in the recessed portion, and a through hole formed in the retainer. A stop member inserted from the through-hole and projecting into the depressed portion and locked to the retainer; a first contact surface in the depressed portion contacting one end of the first elastic body; and the stop member And the other end of the first elastic body in contact with the collar body, and the movable gripping body moving to the shallow portion of the inclined groove when the core does not cover the collar body The take-up collar according to claim 1, further comprising a retainer urging mechanism that urges the retainer against the collar body so as to return to a deep portion. A recessed portion formed along the row of the inclined grooves in a portion of the outer peripheral surface of the collar body covered with the retainer, a first elastic body provided in the recessed portion, and a through hole formed in the retainer. A stop member inserted from the through-hole and projecting into the depressed portion and locked to the retainer; a first contact surface in the depressed portion contacting one end of the first elastic body; and the stop member The other end of the first elastic body in contact with the second elastic body, the second elastic body provided in the recessed portion, and the second contact surface in the recessed portion in contact with one end of the second elastic body And the other end of the second elastic body in contact with the stop member, and the movable gripping body moving to the shallow portion of the inclined groove when the core is not covered with the collar body, The retainer is attached to the collar book so as to return to the deep part of the inclined groove. Winding collar of claim 2 to claim 1, characterized in that it comprises a retainer biasing mechanism for biasing against. A female screw a penetrating from the outer peripheral surface to the inner peripheral surface of the collar body a in a portion covered with the retainer, a screw a screwed into the female screw a, and the collar body a are engaged by the screw. 5. The winding according to claim 1, further comprising: a collar body b; and an operation hole a formed at a position corresponding to the female screw a at a position corresponding to the female screw a at a position smaller than a diameter of the screw a. Color.

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