JP2011073870A - Winding core support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the jumping-out of a rolling element according to high speed and to cope with high speeding in a winding core support device for externally inserting a hollow winding core and transmitting rotation from a rotary drive shaft. <P>SOLUTION: The hollow winding core A such as a paper pipe is externally inserted. An annular groove 5 is provided in the outer peripheral part width direction center of a collar body 3 provided rotatably and transmittable in relation to the rotary drive shaft 2. In the annular groove 5, a plurality of recessed parts 6 having bottom surfaces inclined so that each one end side or both side end sides may be shallow are formed at required intervals in a peripheral direction via a partition part. Magnets are provided in each long groove 13 corresponding to each of the inclined bottom surfaces and the partition part on the deeper side of the bottom surfaces on an inside wall in each of the recessed parts 6. A slip ring 7 is rotatably fitted to be flush without clearance on the whole width of the annular groove 5. In the ring 7, the rolling element 8 which is moved along the inclined bottom surface of each recessed part 6 and is engaged to the externally inserted winding core by projecting the part in the radial direction at a shallow position is disposed to be journaled to each long groove 13 on the inside wall in each of the recessed parts 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a core support device, and more specifically, a winding device for winding a sheet band such as a sheet of paper, cloth, a synthetic resin film or a metal foil as it is or slitting it to an arbitrary width, or The present invention relates to a core support device for an unwinding device.

Conventionally, as this type of core support device, a collar provided so as to be able to rotate integrally with a rotary drive shaft for winding by frictional coupling and the like, and a hollow core such as a paper tube extrapolated to this collar It is common to have a means for transmitting the rotation of the collar and to rotate the extrapolated core in one rotation direction. (For example, see Patent Document 1)
One example of the structure will be described with reference to FIGS. 5 to 8 showing a known core support device A. Continuously in the circumferential direction at the center in the width direction on the outer periphery of the collar body 3 provided to be able to transmit the rotation to the rotary drive shaft 2. A plurality of recesses having bottom surfaces inclined so that one end side in the circumferential direction is shallow on both sides of the ring 7. 6, for example, as shown in FIG. 7, are provided at three equiangular intervals. Each concave portion 6 can move in the circumferential direction along the inclined bottom surface, and a part of the diameter of the collar main body is shallow at the bottom surface. Rolling elements 8 are arranged so as to protrude outward in the direction and sink from the outer peripheral surface of the collar body at a deep position on the bottom surface, and these rolling elements 8 are held by magnets 12 so that they can be displaced in the radial direction without being separated from each other. Have the structure and pressure Controlled air is supplied from the axial center hole of the rotary drive shaft in the direction indicated by the arrow in FIG. 8 to push up the piston 9, transmitting torque while the piston 9 slips on the inner periphery of the slip ring, and rotation of the collar body Is transferred to a hollow core such as a paper tube extrapolated via the rolling element 8 to wind or unwind.

  However, in the above-described core support device A, when the rolling element 8 is in the deep position b of the inclined bottom surface, a slide roller (wheel-shaped rotating body) in which a hollow core is extrapolated and fixed by a fixing bolt 11 is provided. 10 rotation guides the winding core in the insertion direction, facilitating the extrapolation of the winding core, and when the collar body is rotated together with the rotary drive shaft 2, the friction with the slide roller that does not rotate in the rotation direction of the slip ring 7. The collar body rotates relatively without the slip ring 7 rotating, and the rolling element 8 moves to the shallow position a of the inclined bottom surface and partially projects in the radial direction, and is strongly pressed against the inner surface of the core and frictionally coupled to the inner surface of the core. Thereafter, the winding core is rotated and wound in synchronization with the collar body together with the slip ring. However, as described above, the position of the rolling element is moved and the winding is frictionally coupled to the inner surface of the winding core. When compared to the annular groove, slip ring Since the width is small, a recessed space by the recessed portion 6 remains between the inner surface of the annular groove 5 and the side surface of the slip ring 7, and scrap dust is generated by the sliding contact between the inner surface of the paper tube or the like and the corners at both upper ends of the recessed portion 6. It was found that this accumulated in the recesses 6 on both sides of the slip ring in the central portion of the outer periphery of the collar body, impairing the normal core support function.

  Therefore, the present inventor slips the slip ring 7 with the full width of the annular groove 5 in order to eliminate the generation of dust due to frictional contact with the core in the use of the core support device and to ensure smooth rotation. The outer peripheral surface of the ring 7 and the outer peripheral surface of the collar body 3 are formed flush with each other, and the clearance between the inner surface of the annular groove 5 and the both side surfaces of the slip ring 7 on the outer periphery of the collar body 3 is not hindered. An improved core support device was proposed. (For example, see Patent Document 2)

JP 2001-187656 A Utility Model Registration No. 3124484

  However, when the improved core support device continued to be used, 1000 r. p. In the rotational drive of m or less, smooth radial displacement of the rolling element was performed, but 1000 r. p. It has been found that at high speed rotation exceeding m, the rolling element pops out due to centrifugal force, and reliable displacement cannot be obtained.

  Therefore, the present inventor has further studied, and as a result, by finding the formation of a long groove that holds the rolling element particularly in response to the displacement of the rolling element by the inclined bottom surface, the rolling along the recessed portion having the inclined bottom surface of the collar body is achieved. While holding the moving body and ensuring the displacement, 1000 r. p. The purpose is to eliminate the rolling out of the rolling element at high speed rotation exceeding m, to ensure smooth rotation in recent high-speed winding and unwinding, and to improve the efficiency of winding and unwinding. To do.

  That is, the feature of the core support device of the present invention suitable for the above object is that an annular groove is formed in the central portion in the width direction of the outer peripheral portion of the collar body, in which a hollow core is extrapolated and is provided so as to be able to transmit rotation to the rotation drive shaft. A plurality of recesses having bottom surfaces that are inclined so that one end side in the circumferential direction becomes shallow at a required interval in the circumferential direction in the annular groove, and the above-mentioned side wall of the recess is formed on the side wall of the recess A long groove having an inclination corresponding to the inclined bottom surface of the recessed portion is provided, and a magnet is disposed in a partition portion on a deep position side of the long groove. Fitted to the outer peripheral surface of the main body and without a gap between the inner surface of the annular groove and both sides of the slip ring, moved to the slip ring along the inclined bottom surface of the recess, and at a shallow position of the bottom surface inclination Part protrudes radially outward Restraining the take-core engages the extrapolated core by Rukoto is a rolling element for rotating the arrangement formed by disposed allowed pivotally supported on the elongated groove of the recess sidewalls.

  Here, it is needless to say that eliminating the gap between the inner surface of the annular groove and both sides of the slip ring is not complete contact and does not hinder the rotation of the slip ring. In addition, when winding, the unwinding mode from the raw roll usually has two modes of lower unwinding where the sheet back side is unrolled as the upper surface and upper unwinding where the sheet surface is unrolled as the upper surface. The inclined bottom surface of the recessed portion is one direction, and is used for unwinding of either the above-described upper unwinding or lower unwinding.

  On the other hand, a second aspect of the present invention is a core support device that can be used for both the upper unwinding and the lower unwinding, in which a hollow core is extrapolated, and a hollow core is extrapolated with respect to the rotary drive shaft. An annular groove is provided in the center of the collar body in the width direction of the collar body that is capable of rotating transmission with respect to the drive shaft, and the annular groove is shallow at the middle height in the circumferential direction at a required interval in the circumferential direction, and both side ends become deep. A plurality of recessed portions having inclined bottom surfaces are formed via partitioning portions, and a long groove having a medium-high inclination is provided on the side wall of the recessed portion corresponding to the inclined bottom surface of the recessed portion, and both side ends of the long grooves are provided. While the magnets are respectively arranged in the partition portions on the deep position side, the slip ring is rotated with the full width of the annular groove on the outer peripheral surface of the collar body, and the gap between the inner surface of the annular groove and both sides of the slip ring And remove the recess in the ring. A rolling element that moves along an inclined bottom surface, engages with an externally inserted core at a middle and high position where the bottom surface is shallow, and protrudes radially outward to restrain and rotate the core. Are configured so as to be pivotally supported in the long groove on the side wall of the recessed portion.

  Since the core support device of the present invention is provided with the inclined bottom surface in the recessed portion as described above, and the long groove for supporting the rolling element corresponding to the inclined bottom surface is provided on the sidewall of the recessed portion with the corresponding inclination, 1000r. p. The rolling element is retained in the long groove even for rotations exceeding m and does not pop out due to centrifugal force, ensuring smooth and reliable movement along the inclined bottom surface and the long groove, and is prominent in response to recent high speeds. Expected. Moreover, it has the effect which stabilizes holding | maintenance of the rolling element in a recessed part by providing a magnet in the partition part of the deep position side of a recessed part.

  In addition, when the long groove in the concave portion is only the bottom surface inclined so as to become shallow toward one end by the partition portion, it is used for so-called upper unwinding or lower unwinding, but the central portion is shallow and both end sides are gradually deepened. In the case of a series of middle and high-level inclined bottom surfaces, it has the utility that it can be changed and used as needed for both upper unwinding and lower unwinding.

  Of course, the core support device of the present invention covers the entire recess space by the recesses on both sides of the conventional slip ring, so that when the inner surface of the core is in frictional contact with the outer periphery of the collar body during conventional rotation, Is a paper tube or the like, the friction contact causes the inner surface to be rubbed particularly by the upper corners of the recessed wall portion to generate dust and the like, which accumulates in the recessed portion and inhibits rotation. Since the slip ring has the full width of the annular groove and no recessed portion is formed, the inner surface of the paper tube or the like is not rubbed by the upper corner of the recessed portion, and no dust is generated. There is also an effect that a suitable rotation transmission can be achieved.

1 is an external perspective view of a core support device according to the present invention. It is a radial direction partial abbreviation cross-sectional schematic diagram of the winding core apparatus. It is PP sectional drawing in FIG. It is a color main body side view which shows the other long groove shape of a recessed part side wall. It is an external appearance perspective view which shows a known core support apparatus. It is an axial sectional view of a collar body of a known core support device. FIG. 7 is an operation explanatory diagram of a radial cross section of the color main body of FIG. 6. It is structure explanatory drawing which shows the paper tube holding | maintenance state of a known apparatus.

  Hereinafter, specific embodiments of the core support device of the present invention will be described with reference to the accompanying drawings. 1 to 3 show an example of the core support device of the present invention, FIG. 1 is an external view, FIG. 2 is a schematic cross-sectional view of a main portion in the radial direction, and FIG. 3 is a main portion in the axial direction along line P-P in FIG. It is a cross-sectional schematic diagram.

  In these drawings, reference numeral 1 denotes a winding core support device that is fitted to the outer periphery of the rotary drive shaft 2 via a bearing 4 and rotates freely with respect to the shaft core. An annular groove 5 is formed on the outer periphery in the center in the width direction, and a slip ring 7 has a width over the entire width of the annular groove between the annular groove inner surface and both sides of the slip ring, as shown in FIGS. The slip ring outer peripheral surface and the collar main body outer peripheral surface are flush with each other without any gap.

  The bottom surface of the annular groove of the collar body 3 is shallow at one end side in the circumferential direction as shown in FIG. 2, and has a plurality of recessed portions 6 having bottom surfaces that are inclined so as to become deeper in the other direction. A partition portion 6 ′ is provided between each recessed portion 6, and at a required circumferential position with respect to each recessed portion 6 in the slip ring 7, respectively, along the inclined bottom surface in the circumferential direction. In order to stabilize the holding at the deep position of the bottom surface, each one rolling element 8 that is movable and partly protrudes radially outward of the collar body 3 at the shallow position of the bottom surface is disposed. The magnet 14 is disposed in the partition 6 facing the position to stabilize the movement, and the long groove 13 has an inclination corresponding to the degree of inclination of the inclined bottom surface of the recessed portion on both side walls of the recessed portion 6. Is provided, and Axially supports the shaft 8a projecting body 8 on both sides holding the rolling elements.

  In addition, in order to raise frictional resistance, the outer periphery of the said rolling element 8 is given the process which gives minute unevenness | corrugations, such as a knurling process. Here, the width of the slip ring 7 is smaller than the width of the annular groove in the slip ring 7 in the conventional apparatus shown in FIG. In the present invention, the slip ring 7 covers the recessed space formed by the recessed portion and covers the outer peripheral surface of the slip ring over the entire width of the annular groove at the center in the width direction of the outer periphery of the collar body 3. The outer peripheral surface of the collar body is fitted to the same level without any step, and there is no gap between the inner surface of the annular groove and both sides of the slip ring on the outer periphery of the collar body. Therefore, due to the recesses seen on the outer periphery of the conventional collar body There is no space.

  In the figure, reference numeral 10 denotes a wheel shape that is provided on the outer peripheral portion of the slip ring 5 at a predetermined interval, ensures engagement force with respect to the initial winding core of the slip ring 7, and facilitates insertion and removal of the winding core. This is a rotating body, and is formed by a pressing mechanism that is fixed by a fixing bolt 11 and urges and presses against the inner surface of the core, and can rotate only in the axial direction of the slip ring.

  The present invention is configured as described above, and when winding the sheet by extrapolating the core 1 such as a paper tube to the outside of the core support device, first, the rolling element 8 is at a deep position b in the recessed portion 6. In this case, the core 1 is supported by the long groove 13 on the inner wall of the recessed portion and does not protrude outward in the radial direction from the collar body 3, or even if it protrudes, the core 1 is easily extrapolated. be able to. At this time, the wheel-shaped rotating body 10 which is a pressing means using the elastic means is elastically retracted against the elastic means by the pressing force due to the extrapolation of the winding core, and accompanying the insertion of the winding core. Thus, it is possible to easily perform the extrapolation of the core without any problem. When the end of the sheet is stopped on the winding core and the collar body 3 is rotated together with the rotary drive shaft 2, the slip ring 7 is rotated by the friction between the winding core and the rolling element 8 or the wheel-shaped rotating body 10 in contact with the winding core. Without rotation, only the collar body 3 rotates, and the rolling element 8 moves to a shallow position a along the inclined bottom surface of the recess and the long groove 13 on the inner wall of the recess, and a part of the rolling element 8 as shown in FIG. Protrudes in the radial direction from the outer peripheral surface 3a of the collar body 3, is pressed strongly against the inner surface of the core 1, and frictionally engages with the inner surface of the core. Thereafter, the core is synchronized with the collar body 3 together with the slip ring 7. Rotate and take up. At this time, the rolling element 8 is securely held by the magnet 14 in the partition portion and does not come off. On the other hand, when the collar body 3 is rotated in the reverse direction, the rolling element 8 moves to a deeper position b of the inclined bottom surface and is submerged inside the outer peripheral surfaces of the collar body 3 and the slip ring 7 so that the core can be easily pulled out. .

  In addition, although the said description described the core support apparatus in winding, it is the same also about an unwinding axis | shaft. The frictional engagement between the inner surface of the core and the slip ring 7 and the collar body 3 during winding and unwinding is strongly performed for accurate winding. When the upper apex portion is present on the side surface of the concave portion, the corner portion of the upper end portion of the concave portion and the inner surface of the core are in frictional contact, and it is inevitable that scrap dust is generated in a state where the inner surface of the core is shaved. In the present invention, the slip ring is provided over the entire width of the annular groove at the central portion in the outer peripheral width direction of the collar body, the outer peripheral surface of the slip ring and the outer peripheral surface of the collar body are flush with each other, and the inner surface of the annular groove and both sides of the slip ring There is no gap between them, so there is no recess space due to the recesses on the outer periphery of the collar body, and therefore there are no corners that generate dust, so there is no hindrance to rotation due to dust, smooth and correct. Can be wound up, the unwinding do. The above is the one direction in which the inclined bottom surface reaches the shallower position than the deep position in the same rotational direction through the partition portion 6 '. Therefore, the upper winding, the upper winding, or the lower winding, the lower winding at the time of winding and unwinding. Limited to either.

In contrast to this, in FIG. 4, in order to enable upper winding, upper winding, or lower winding and lower winding, the inclined bottom surface of the collar body 3 is formed in a middle-high shape with a deeper end and a shallower central portion. Corresponding to the bottom surface, the long groove 13 on the inner surface of the recessed portion is inclined in a middle-high shape so that the central portion is close to the outer periphery. Since the basic configuration other than the formation of the long groove is the same as described above, detailed description thereof is omitted.
According to this configuration, by moving the rolling element beyond the inclined bottom surface and the middle part of the long groove, a reverse rotation drive can be given to the rotating shaft, and not only for upper winding and upper winding, but also for lower winding and lower winding. However, it can be easily handled.

  In the above, the rolling elements are supported by a long groove provided on the inner side surface of the recessed portion and moved, so that 1000 r. p. Even at a high-speed rotation exceeding m, the rolling element does not jump out due to centrifugal force, and a stable rotation is maintained, which can contribute to the improvement of winding and unwinding efficiency.

A: Winding core 1: Winding core support device 2: Rotating drive body 3: Collar body 4: Bearing 5: Annular groove 6: Recessed portion 7: Slip ring 8: Rolling body 8a: Rolling body shaft 9: Piston 10: Wheel Shaped rotating body 12: Magnet 13: Long groove 14: Magnet

Claims (2)

  A hollow core is extrapolated and an annular groove is provided in the central portion in the width direction of the outer periphery of the collar body that is provided so as to be able to transmit rotation with respect to the rotation drive shaft, and in the circumferential direction at a required interval in the circumferential direction. On the other hand, a plurality of concave portions having a bottom surface inclined so as to be shallow at one end side are formed through a partition portion, and a long groove is provided on the side wall of the concave portion with an inclination corresponding to the inclined bottom surface of the concave portion, Further, a magnet is disposed in the partition portion on the deep position side of the long groove, and a slip ring is rotatable with the full width of the annular groove so as to be flush with the outer peripheral surface of the collar body, and slips with the inner surface of the annular groove. Fitted with the gap between the two sides of the ring, moved to the slip ring along the inclined bottom surface of each recess, and a part of it protrudes radially outward at a shallow position on the bottom surface. Engage with the inserted core to restrain the core Core supporting device, characterized in that the rolling elements to rotate allowed pivotally supported on the elongated groove having an inclination of the recess sidewall formed by arranged.   A hollow core is extrapolated, and an annular groove is provided in the central portion in the width direction of the outer periphery of the collar body that is capable of transmitting rotation with respect to the rotation drive shaft. A plurality of concave portions having bottom surfaces inclined so as to be deep at both ends are formed through partition portions, and long grooves are formed on the side walls of the concave portions with inclinations corresponding to the middle and high inclined bottom surfaces of the concave portions. On the other hand, a magnet is disposed in the partition portion on the deep position side of both ends of the long groove, and the slip ring is rotatable with the full width of the annular groove, and the outer peripheral surface thereof is flush with the outer peripheral surface of the collar body. In addition, the gap between the inner surface of the annular groove and both sides of the slip ring is eliminated, and the slip ring moves along the inclined bottom surface of each concave portion, and a part thereof is radially outward at a shallow position of the bottom surface. On the extrapolated core by projecting into Combined to restrain the take-core, core support device, characterized in that the rolling elements rotate formed by disposed allowed pivotally supported on the elongated groove having an inclination of the recess sidewall.

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