JP2012144304A - Scrap winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scrap winder that can wind scraps as a wound roll having proper winding stiffness with a small amount of unevenness so that the scraps is not broken and has a relatively simple structure in a space-saving manner.SOLUTION: The scrap winder includes a compensation roller 10 for performing the compensation so that a travel route length of the scraps T from a fixed guide 8 to a wound roll Rt on a spool 7 is substantially constant independently of the reciprocating movement of the scraps T by a traverse guide 9. The outer circumferential part of the compensation roller 10 is formed so that the outer diameter at an engagement part of the compensation roller 10 with the scraps T is the maximum when the travel route of the scraps T from the fixed guide 8 to the traverse guide 9 is the shortest, and the outer diameter at the engagement part of the compensation roller 10 with the scraps T is gradually decreased so that the travel route length of the scraps T from the traverse guide 9 to the wound roll Rt is decreased in the amount corresponding to an increase in the travel route length of the scraps T from the fixed guide 8 to the traverse guide 9, as the engagement part of the compensation roller 10 with the scraps T gets away from the outer diameter maximum part.

Description

  In the present invention, the strips of the belt-like sheet coming out of the slitter that divides the belt-like sheet of plastic film, paper, metal foil or the like into the belt-like sheets having a plurality of required widths are wound around the body of the reel that is driven to rotate. The present invention relates to a cutting scrap winding device that winds while reciprocating in the width direction of the body portion.

  In general, the slitter has a plurality of cutting blades arranged in a line in the width direction of the belt-like sheet at a predetermined position on the travel path of the belt-like sheet, and the traveling belt-like sheet is moved in the longitudinal direction of the belt-like sheet by each cutting blade. For example, it is provided in a sheet dividing and winding device that divides and winds a wide belt-like sheet from a raw fabric roll into a plurality of belt-like sheets having required widths. When dividing a wide belt-like sheet into a plurality of required belt-like strips with a slitter in a sheet split winding device, it is usual to make a cut on both edges of the wide belt-like sheet with a slitter cutting blade. The edge that has been cut runs out of the slitter as cutting waste. If this cutting waste is not discharged from the travel path of the belt-like sheet, it will be entangled with the slitter, the belt-like sheet guide roller, etc. The take-up device is provided with a cutting waste take-up device on the side of the belt-like sheet travel path, and the cutting waste take-up device winds up the cutting waste coming out of the slitter so as not to loosen or break. Wind it on a frame. At that time, since the cutting waste is reciprocated in the width direction of the reel, the running path length of the cutting scrap from the slitter to the reel changes, and the change in the running path length causes the tension of the cutting waste to fluctuate. become. And since the cutting waste of the belt-like sheet is narrow in width and easily breaks, it is necessary to suppress the fluctuation of the tension acting on the cutting waste as small as possible.

  Conventionally, as a cutting waste winding device, as disclosed in the following Patent Document 1, a winding frame capable of winding cutting waste and driven by a rotary drive mechanism including a winding torque adjusting device, and A touch roller that enters the width of the reel between the two sides of the reel and suppresses the scraps wound around the reel, and feeds new scraps onto the reel. A dancer roller that gives a required tension to the cutting swarf that is running, and a drive mechanism that drives the touch roller so that its peripheral speed is equal to the cutting swarf supply speed by a displacement signal of the dancer roller, There is one that can be wound while suppressing fluctuations in the winding tension of the cutting waste. This cutting waste winding device is effective for a large sheet split winding device in which the width of the cutting waste is relatively wide. However, since the cutting waste winding device includes a dancer roller, a touch roller, and a driving mechanism thereof, the structure is complicated. The occupied space is large and expensive, and it is hardly used as a cutting waste winding device for a small sheet split winding device.

  As a cutting waste winding device for a conventional small sheet split winding device, a dancer roller without a touch roller and a guide that is arranged downstream of the dancer roller and can reciprocate in the width direction of the reel The one provided is proposed (see, for example, Patent Document 2 below). However, in this cutting waste take-up device, since the cutting waste taken up comes out from the slitter of the small sheet split take-up device, it is generally narrower and easier to break than a large size take-up device. The dancer roller continuously changes the running path length of the cutting waste from the slitter to the reel during the winding of the cutting waste, so that the change does not affect the tension of the cutting waste. It must be displaced following the change in the length of the cutting path, but due to the inertia of the dancer roller itself, accurate displacement cannot be obtained. It is not possible to sufficiently suppress the elongation and slack of the cutting waste with respect to the cutting waste which is narrow and easily broken. Therefore, the cutting waste during winding is easily broken or the cutting waste is loosened and easily entangled with the guide roller, and the unevenness of the winding hardness of the winding roll of the cutting waste and the unevenness of the outer peripheral surface of the winding roll Easy to grow.

Japanese Utility Model Publication No. 63-2062 JP 2000-289899 A

  Accordingly, the present invention provides a cutting waste winding device that has a relatively simple structure and a small occupied space, so that the cutting waste is not broken and can be wound as a winding roll with a small unevenness and a proper winding hardness. The challenge is to obtain.

  The present invention provides a cutting waste take-up device that takes up the cutting waste of a belt-like sheet coming out of a slitter while reciprocating in the width direction of the drum portion around the drum portion of a reel frame that is driven to rotate. A fixed guide for guiding the cutting waste to a predetermined position facing the body portion of the frame and at a predetermined distance from the body portion, and cutting waste from the fixed guide toward the winding frame in the width direction of the body portion of the winding frame. A moving traverse guide and cutting scraps reciprocated by the traverse guide are guided to the winding frame, and cutting from the fixed guide to a winding roll formed around the body portion of the winding frame. Provided to be able to rotate around an axis parallel to the rotation center axis of the reel to compensate so that the length of the waste travel path is substantially constant regardless of the reciprocating movement of the cutting waste by the traverse guide. A compensation roller, and the compensation roller When the cutting waste travels from the fixed guide to the traverse guide during the reciprocating movement of the cutting waste by the traverse guide, the compensation roller engages with the cutting waste when the traveling path of the cutting waste becomes the shortest. The path of cutting waste from the fixed guide to the traverse guide as the part of engagement of the compensation roller with the cutting waste moves away from the place where the outer diameter of the compensation roller is maximized. The outer diameter of the engagement portion of the compensation roller with the cutting waste is gradually reduced so that the travel path length of the cutting waste from the traverse guide to the winding roll on the winding frame is reduced by the increase in length. It is characterized by being formed.

  According to the present invention, the compensation roller for guiding the cutting waste reciprocated by the traverse guide to the winding frame is provided to be rotatable around an axis parallel to the rotation center axis of the winding frame, and the outer peripheral portion of the compensation roller is provided. , When the travel path of the cutting waste from the fixed guide to the traverse guide becomes the shortest during the reciprocating movement of the cutting waste by the traverse guide, the outer diameter at the engagement portion with the cutting waste of the compensation roller is maximized, As the point of engagement of the compensation roller with the cutting waste moves away from the point where the outer diameter of the compensation roller is maximized, the guide roller is wound from the traverse guide by an increase in the travel path length of the cutting waste from the fixed guide to the traverse guide. The traverse guide during winding is formed by gradually reducing the outer diameter of the engagement portion of the compensation roller with the cutting waste so that the traveling path length of the cutting waste to the winding roll on the frame is reduced. Reciprocates the cutting waste However, the traveling path length of the cutting waste from the fixed guide to the take-up roll on the reel can always be kept substantially constant, and since the compensation roller rotates, the cutting waste moves on the compensation roller in the width direction. It can move smoothly with a slight force, and the resistance in the reciprocating direction received by the cutting waste from the compensation roller can be kept small. Therefore, it is possible to reduce the tension fluctuation of the cutting waste supplied onto the winding frame, thereby preventing breakage of the cutting waste during winding, and less winding unevenness. A winding roll having relatively small irregularities can be formed on the winding frame. In addition, it is possible to obtain a cutting waste winding device having a relatively simple structure and a small occupation space.

FIG. 1 is an explanatory view of a sheet split winding device including a cutting waste winding device according to an embodiment of the present invention. FIG. 2 is a front view of a cutting waste winding device according to an embodiment of the present invention. 3 is a cross-sectional view taken along arrow AA in FIG. FIG. 4 is a front view of the compensation roller for explaining a change in the engaging portion between the compensation roller and the cutting waste accompanying the reciprocating motion of the cutting waste. FIG. 5 is a cross-sectional view of the compensation roller for explaining the relationship between the engagement portion of the compensation roller with the cutting waste and the outer diameter thereof. FIG. 6 is a side view of a traverse guide according to another embodiment of the present invention.

  1 is an explanatory view of a sheet split winding device provided with a cutting waste winding device according to an embodiment of the present invention, FIG. 2 is a front view of the cutting waste winding device shown in FIG. 1, and FIG. It is -A arrow sectional drawing. The cutting scrap take-up device 1 is attached to the machine side of the sheet split take-up device 2, and the sheet split take-up device 2 is provided with a plurality of requirements by the slitter 3 while rewinding the wide strip sheet S0 from the original roll R0. The strip-shaped sheet S having a width is divided, and the divided strip-shaped sheet S is wound around the winding shaft 4 in a roll shape.

  The slitter 3 includes a plurality of cutting blades 3a arranged in a line in the width direction of the wide strip sheet S0, and each cutting blade 3a cuts the wide strip sheet S0 traveling in the longitudinal direction. In the embodiment shown in FIG. 1, three cutting blades 3a are provided, and the wide strip-shaped sheet S0 is trimmed at both edges, and the remaining trimmed portion is divided into two required widths. Is divided into strip-like sheets S.

  Both edges of the wide sheet S0 that has been trimmed become cutting waste T, and the cutting waste T runs from the slitter 3 at the same speed as the running speed of the belt-like sheet S. The strip sheet S is guided to the side of the travel path of the belt-like sheet S so as not to be wound, and is wound by the cutting waste winding device 1.

  In the case of this embodiment, the cutting waste T on both edges of the wide sheet S0 is guided to the cutting waste winding device 1 by the guide rollers 5 and 6 having the hooks on both sides, and each cutting waste T is common to each other. It is wound on a reel 7. Note that a cutting scrap take-up device may be provided for each cutting scrap T as necessary, and each cutting scrap T may be wound up individually.

  The cutting waste take-up device 1 takes up the cutting waste T while reciprocating in the width direction of the barrel portion 7a (the left-right direction in the drawing in FIG. 1) around the barrel portion 7a of the reel 7 that is driven to rotate. A fixed guide 8 that leads the cutting waste T to a predetermined position facing the body 7a of the winding frame 7 and at a certain distance from the body 7a, and a cutting waste T directed from the fixed guide 8 to the winding frame 7 Is the traverse guide 9 that reciprocates in the width direction of the body portion 7 a of the reel 7, and the center of rotation of the reel 7 for guiding the cutting waste T that is reciprocated by the traverse guide 9 to the reel 7. And a compensation roller 10 rotatably provided about an axis parallel to the axis.

  The traverse guide 9 is mounted on a moving body 12 that reciprocates along a guide shaft 11 fixed in parallel to the rotation center axis of the winding frame 7. The movable body 12 is penetrated by a cylindrical cam 14 that is rotatably mounted on the frame 13 and is parallel to the guide shaft 11, and is engaged with a cam groove of the cylindrical cam 14. The cylindrical cam 14 can be rotationally driven by a variable speed motor 15 via a drive shaft 16, a pulley 17, a belt 18 and a pulley 19. Further, in this embodiment, the traverse guide 9 is composed of a pair of guide rollers 20 provided so as to be rotatable about an axis intersecting with the reciprocating direction of the cutting waste T. The pair of guide rollers 20 are close to each other and guide the cutting waste T passing between them. Accordingly, the pair of guide rollers 10 can reciprocate parallel to the rotation center axis of the winding frame 7 by rotationally driving the cylindrical cam 14 by the variable speed motor 15. One end of the guide roller 20 is attached to a support shaft 21 that is cantilevered in parallel with the rotation center axis of the winding frame 7 and can be fixed by rotating around the support shaft 21. The guide roller 20 can be tilted about the support shaft 21 to change its posture.

  The winding frame 7 includes a body portion 7a and circular side plates 7b and 7c provided on both sides of the body portion 7a. The winding frame 7 is rotatably provided by cantilevering the support shaft 22 of the body portion 7a by the frame 13. is there. The left end portion of the support shaft 22 is coupled to the output shaft of the powder clutch 23. The pulley 24 is provided on the input shaft of the powder clutch 23 that is penetrated by the output shaft, and the pulley 25 is fixed to the drive shaft. Since the belt 26 is hung, the rotational force of the motor 15 can be adjusted to the required rotational force by the powder clutch 23 and transmitted to the reel 7, thereby applying the required winding torque to the reel 7, The winding tension of the cutting waste T can be adjusted.

  The fixed guide 8 is composed of guide rollers having hooks at both ends, and is rotatably provided on a central shaft 29 attached to the tip of an arm 28 extending from the machine frame 27 of the sheet split winding device 2. Further, as shown in FIG. 2, the fixed guide 8 has a cutting path T from the fixed guide 8 to the traverse guide 9 where the running path of the cutting waste T is near the center of the body portion 7 a of the winding frame 7 in the width direction. It arrange | positions so that the part 7a may be orthogonally crossed.

  The cutting waste T supplied from the guide roller 6 to the cutting waste winding device 1 is wound around the trunk portion 7a of the winding frame 7 through the fixed guide 8, the traverse guide 9, and the compensation roller 10. Since the traversing guide 9 reciprocates in parallel with the rotation center axis of the winding frame 7 during winding of the cutting scrap T, the cutting scrap T passing through the traversing guide 9 is in the width direction of the body portion 7a of the winding frame 7. The position where the cutting waste T is wound around the body 7a of the winding frame 7 changes from time to time in the width direction, and the position where the cutting waste T passes over the compensation roller 10 is also the longitudinal center of the compensation roller 10. It changes every moment in the axial direction.

  As shown in FIG. 4, the compensation roller 10 includes a center shaft 10a and a body portion 10c rotatably supported by a bearing 10b at a predetermined position of the center shaft 10a in this embodiment. Support and guide the cutting waste T. That is, the trunk portion 10 c is an outer peripheral portion of the compensation roller 10.

  In FIG. 4, the length of the cutting waste T from the point P8 on the fixed guide 8 to the point P9 on the guide roller 20 of the traversing guide 9 is the traveling length of the cutting waste T from the fixed guide 8 to the traversing guide 9. When the length of the path is set, when the traveling path of the cutting waste T from the fixed guide 8 to the traverse guide 9 is perpendicular to the longitudinal center axis of the compensation roller 10 as shown by a one-dot chain line, the traverse guide from the fixed guide 8 The traveling path of the cutting waste T up to 9 is the shortest. At this time, the cutting waste T that has passed through the guide roller 20 indicated by the alternate long and short dash line travels to the reel 7 through the point P0 on the compensation roller 10. When the traverse guide 9 moves from the position indicated by the alternate long and short dash line to the position indicated by the solid line, the cutting waste T passes through the point Px on the compensation roller 10 and the travel path of the cutting waste T from the fixed guide 8 to the traverse guide 9 is changed. Tilt as shown by the solid line. The engagement location of the compensation roller 10 with the cutting waste T when the cutting waste T passes the point P0 is P0, and the engagement location of the compensation roller 10 with the cutting waste T when the cutting waste T passes the point Px is Px. Then, the length of the travel path of the cutting waste T from the fixed guide 8 to the traverse guide 9 increases as the engagement location Px of the compensation roller 10 with the cutting waste T moves away from the engagement location P0. Further, the traveling path of the cutting waste T indicated by the two-dot chain line is the traveling path of the cutting waste T when the traversing guide 9 moves farthest from the position indicated by the one-dot chain line. At this time, the cutting waste T is compensated for. The point P1 on the roller 10 is passed. Points P8 and P9 are set by selecting locations on the fixed guide 8 and guide roller 20 where the travel path of the cutting waste T does not change even when the traverse guide 9 reciprocates.

  Circles C0 and Cx in FIG. 4 show the circumference of the cross section of the compensation roller 10 at the engagement points P0 and Px, and FIG. 5A shows a cross section of the compensation roller 10 at the engagement point P0 in FIG. FIG. 5B shows a cross section of the compensation roller 10 at the engagement point Px in FIG. A point P9 in FIG. 4 corresponds to the point P9 in FIG. 5. In FIG. 5, the cutting waste T reaches the point Pr on the winding roll Rt from the point P9 through the points Pa and Pb. Point Pa is a contact point between the cutting waste T and the compensation roller 10 from the point P9 to the compensation roller 10, and point Pb is a contact point of the cutting waste T from the compensation roller 10 to the take-up roll Rt with the compensation roller 10. Is a contact point between the cutting waste T toward the winding roll Rt and the winding roll Rt.

  In the compensation roller 10, the traveling path length of the cutting waste T from the fixed guide 8 to the winding roll Rt formed around the body portion 7 a of the winding frame 7 is related to the reciprocating movement of the cutting waste by the traverse guide 9. The compensation roller 10 is compensated so as to be substantially constant, and the outer periphery of the compensation roller 10 travels the cutting waste T from the fixed guide 8 to the traverse guide 9 during the reciprocating movement of the cutting waste T by the traverse guide 9. And the cutting roller T of the compensation roller 10 from the point P0 where the outer diameter of the compensation roller 10 is maximized. As the engagement point Px of the sword moves away, the swarf T from the traverse guide 9 to the take-up roll Rt on the reel 7 is increased by an increase in the travel path length of the swarf T from the fixed guide 8 to the traverse guide 9. The travel route length of As described above, it is formed by gradually decreasing the outer diameter of the engagement portion Px of the cutting debris T of the compensation roller 10.

  When the outer diameter of the winding roll Rt on the winding frame 7 changes during winding, the cutting from the traverse guide 9 to the winding roll Rt is performed at each position of the reciprocating movement of the cutting waste T by the traverse guide 9. Since the travel path length of the waste T slightly changes, the increase in the travel path length of the cutting waste T from the fixed guide 8 to the traverse guide 9 increases from the traverse guide 9 to the reel 7. The decrease in the travel path length of the cutting waste T up to the winding roll Rt can change. Therefore, the travel path length of the cutting waste T from the traverse guide 9 to the take-up roll Rt on the reel 7 according to the increase in the travel path length of the cutting waste T from the fixed guide 8 to the traverse guide 9. Strictly speaking, it is necessary to change the outer diameter of each part of the outer periphery of the compensation roller during winding, but this change amount is extremely small and can be ignored. The traveling path length of the cutting waste T from the swing guide 9 to the winding roll Rt on the winding frame 7 is based on the winding roll Rt having a constant outer diameter as shown in FIG. Is calculated as the sum of the length of the line segment between the points Pa and Pb, and the length of the line segment between the contact point Pr and the contact point Pb. Based on the outer diameter of the body portion 7a of the reel 7, instead of the line segment between the contacts Pr and Pb, May be obtained by using a length of a line indicated by a two-dot chain line (A), a may be calculated based on the winding roll Rt when the maximum diameter.

  The outer diameter of the compensation roller 10 at the engagement point Px is one point from the point P8 on the travel path of the cutting waste T from the point P8 on the fixed guide 8 to the point P9 on the guide roller 20 indicated by a solid line in FIG. A difference with the length of the travel path of the cutting waste T up to the point P9 on the guide roller 20 indicated by a chain line is obtained, and the difference is set as an increase in the travel path length of the cutting waste T, and the increase is shown in FIG. The length obtained by subtracting the length of the line segment between points P9 and Pa in (A), the length of the arc between points Pa and Pb, and the length of the line segment between points Pb and Pt is shown in FIG. It is determined to be equal to the sum of the length of the line segment between points P9 and Pa in B), the length of the arc between points Pa and Pb, and the length of the line segment between points Pb and Pt.

  As shown in FIG. 4, the outer diameter of each of the outer peripheral portions of the compensation roller 10 is a function having the distance x from the point P0 to the point Px as an independent variable and the outer diameter y of the compensation roller 10 at the point Px as a dependent variable. It is desirable to obtain based on this function. Further, several engagement points Px with the cutting waste T are set on the compensation roller 10, and the outer diameter (diameter) of the compensation roller 10 is obtained for each of the set engagement points Px. A line segment having a length equal to the diameter is drawn at a point Px on the longitudinal center axis of the compensation roller 10 so that the midpoint of the line segment is orthogonal to the longitudinal center axis of the compensation roller 10. The outer diameters of the portions of the compensation roller 10 may be obtained approximately by connecting the tips so as to form a smooth curve. In this embodiment, as shown in FIG. 4, since the distance from the fixed guide 8 to the traverse guide 9 is sufficiently long, the difference between the left and right shapes of the outer periphery of the compensation roller 10 can be ignored. The outer peripheral portion 10 obtains the outer diameters of the point P0, the point P1, and several engaging points Px set between the points P0 and P1 in the right part from the engaging point P0, and based on this, the engaging point P0 is the center. It is formed so as to be symmetrical.

  FIG. 6 is a side view of a traverse guide 9 according to another embodiment of the present invention. The traverse guide 9 includes a pair of guide rollers 20 on the upstream side of the compensation roller 10 and a pair of downstream sides of the compensation roller 10. The guide roller 30. The pair of guide rollers 20 on the upstream side is configured similarly to the pair of guide rollers 20 shown in FIG. The pair of downstream guide rollers 30 is mounted on the moving body 12 and can guide the cutting waste T, like the pair of guide rollers 20 on the upstream side of the compensation roller 10. Further, the pair of guide rollers 20 and the pair of guide rollers 30 are lined up and down along the traveling path of the cutting waste T set in a plane perpendicular to the longitudinal central axis of the compensation roller 10 and the cutting waste T. Are arranged so as to sandwich each of the travel routes. As a result, the pair of guide rollers 20 and the pair of guide rollers 30 can reciprocate synchronously, and the traverse guide 9 has the cutting waste T on the upstream side and the cutting waste T on the downstream side of the compensation roller 10. The cutting waste T can be reciprocated so that they do not run out of alignment with each other in the reciprocating direction. Therefore, the traverse guide 9 is effective when, for example, the outer diameter of the central portion of the cutting roll for cutting waste is larger than the outer diameter of both ends, resulting in poor winding.

R0 Raw roll Rt Cutting scrap winding roll 1 Cutting scrap winding device 2 Sheet split winding device 3 Slitter 4 Winding shaft 7 Winding frame 7a Body 8 Fixed guide 9 Traverse guide 10 Compensation roller 11 Guide shaft 12 Moving body 13 Frame 14 Cylindrical cam 15 Motor 16 Drive shaft 18 Belt 20 Guide roller 21 Support shaft 23 Powder clutch 26 Belt 27 Machine frame 30 Guide roller

Claims (1)

  In the cutting scrap take-up device for winding the cutting waste of the belt-like sheet coming out of the slitter while reciprocating in the width direction of the drum portion around the drum portion of the reel frame that is driven to rotate, the drum portion of the reel A fixed guide that guides the cutting waste to a predetermined position at a predetermined distance from the body portion, and a traverse that moves the cutting waste from the fixed guide to the winding frame in the width direction of the body portion of the winding frame. The guide and the cutting waste moving back and forth by the traverse guide are guided to the winding frame, and the cutting waste travel path from the fixed guide to the winding roll formed around the body portion of the winding frame. A compensation roller provided to be rotatable around an axis parallel to the rotation center axis of the reel for compensating the length to be substantially constant regardless of the reciprocating movement of the cutting waste by the traverse guide. An outer peripheral portion of the compensation roller The outer diameter of the compensation roller at the engagement position with the cutting waste when the cutting waste travels from the fixed guide to the traverse guide during the reciprocating movement of the cutting waste by the traverse guide. The maximum length of the cutting waste traveling path from the fixed guide to the traverse guide increases as the portion where the compensation roller engages with the cutting waste moves away from the portion where the outer diameter of the compensation roller is maximized. It is formed by gradually reducing the outer diameter of the engagement portion of the compensation roller with the cutting waste so that the traveling path length of the cutting waste from the traverse guide to the winding roll on the winding frame is reduced by the amount A cutting waste winding device characterized by that.

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