JP2011042415A - Continuous sheet winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a continuous sheet from being jammed when switching a core of a continuous sheet winding device. <P>SOLUTION: This continuous sheet winding device includes a nip roller 12 for pressing the continuous sheet a traveling to a pre-winding core by passing through the vicinity of a post-winding core 4 to the post-winding core, a cutting blade 13 for cutting the continuous sheet passing through between the nip roller and the post-winding core, a brush 14 for pressing and sticking a tip part a1 of the continuous sheet cut by the cutting blade to a peripheral surface of the post-winding core, and a turning arm 15 holding the cutting blade and the brush. An air cylinder device 16 for quickly operating a place of reaching the rotary arm from a piston rod 16a, is arranged as a turning arm driving means. When switching the core, the continuous sheet can be cut by the cutting blade substantially simultaneously when pressing the continuous sheet to the core by the nip roller. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an apparatus for winding a continuous sheet flowing from a gravure printing machine, a laminator, a coater or the like.

  A continuous sheet of paper, synthetic resin, metal foil, or the like that is output from a gravure printing machine or the like is wound around a core by a continuous sheet winding device.

  This continuous sheet winding device has two winding cores for pre-winding and post-winding for winding a predetermined length on the downstream side and a predetermined length on the upstream side of the continuous sheet, respectively, from a gravure printing machine, etc. When the continuous sheet that has come out is wound around the pre-winding core by a predetermined amount, the continuous sheet is once cut, and the leading end of the continuous sheet after cutting is connected to a new post-winding core. .

  The continuous sheet winding device automatically performs such a switching operation of the winding core. The continuous sheet winding device passes the vicinity of the winding core for the subsequent winding to the winding core for the previous winding. A nip roller that presses against the peripheral surface of the sheet, a cutter that cuts the continuous sheet that has passed between the nip roller and the core for post winding, and the tip of the continuous sheet that is cut by the cutter on the peripheral surface of the core for post winding A brush that is pressed and adhered to a pre-formed adhesive layer, a rotating arm that holds and rotates the cutter and the brush when the continuous sheet is cut, and a fluid pressure cylinder that drives the rotating arm. (For example, refer to Patent Document 1).

  According to this conventional continuous sheet winding device, when a continuous sheet traveling to the pre-winding core approaches the post-winding core at the time of cutting the continuous sheet, the continuous winding core approaches the post-winding core. The sheet is pressed against the peripheral surface of the core for subsequent winding by a nip roller. Thereby, a continuous sheet adheres to the adhesive bond layer of the surrounding surface of the winding core for after winding. Subsequently, the rotating arm is driven by the fluid pressure cylinder, and the continuous sheet is cut by the cutter held by the rotating arm. Simultaneously with the cutting, the stump of the subsequent continuous sheet is pressed against the adhesive layer on the surface of the post-winding core by the brush. Thus, the continuous sheet coming out of the gravure printing machine or the like is continuously wound around a new post winding core, and the continuous sheet wound around the leading winding core is taken out from the continuous sheet winding device as a roll product. It is.

  When the conventional continuous sheet winding device switches the core from the pre-winding core to the post-winding core, the continuous sheet is first adhered to the peripheral surface of the post-winding core with a nip roller. The continuous sheet is cut with a cutter, and the upstream edge is pressed against the peripheral surface of the core for subsequent winding with a brush. When it takes a long time to cut, the stump of the continuous sheet is jammed on the peripheral surface of the winding core for the subsequent winding, and the upstream continuous sheet is wound on the jammed stump. Become. The continuous sheet overlying the jammed portion is wrinkled, deformed, or creased, and cannot be used as a product.

  In the conventional continuous sheet winding device, a speed increasing mechanism is provided in the transmission system from the fluid pressure cylinder to the cutter in order to prevent such a problem.

  However, since this speed increasing mechanism uses a gear train, there is a problem that the structure of the continuous sheet winding device becomes complicated and large. In addition, the moment of inertia of the rotating part increases accordingly, and the inertial force increases. Therefore, the rotating arm and the cutter are difficult to stop, the transmission system such as a gear is easily broken, and the rotating arm and the shock absorber for stopping the rotating arm are likely to break down.

  The inventors of the present application disclosed in Japanese Patent Application No. 2008-298306 about means for solving such conventional problems. This is because, as a means for driving the rotating arm in the conventional continuous sheet winding device, air is stored and accumulated in one cylinder chamber when the continuous sheet is cut, and the other cylinder chamber is stored in the atmosphere. By adopting an air cylinder device that rapidly moves the part from the piston rod to the rotating arm by opening the side, the rotating arm is constrained to the standby position by the restraining means until the continuous sheet is cut.

Japanese Patent No. 3327727

  However, since the invention disclosed in Japanese Patent Application No. 2008-298306 tries to transmit the thrust of the air cylinder device to the rotating arm by the crank mechanism, the thrust cannot be transmitted 100% depending on the angle of the rotating arm. When cutting a sheet, the cutter may not always be moved at the maximum speed. For this reason, the jamming may not be completely eliminated. Further, even if the cutter speed increases, the cutting force tends to decrease due to the inversely proportional relationship between the speed and torque, so that the sheet tends to be difficult to cut.

  Further, when the rotating arm after cutting the sheet contacts the shock absorber, the rotating arm performs a circular motion, so that the direction of the force applied to the shock absorber varies. Therefore, the shock absorber is likely to break down.

  Therefore, the present invention can increase the speed of the cutter at the time of cutting the sheet without reducing the cutting force, and can reduce the load applied to the rotating arm stop means such as a shock absorber. It is an issue to provide.

  In order to solve the above problems, the present invention employs the following configuration.

  In order to facilitate understanding of the present invention, reference numerals in the drawings are given in parentheses, but the present invention is not limited thereto.

  The invention according to claim 1 includes at least two winding cores (3, 4) for parallel winding and winding for winding the downstream side and the upstream side of the continuous sheet (a). A nip roller (12) that presses the continuous sheet (a) that travels through the vicinity of the winding core (4) to the leading winding core (3) against the peripheral surface of the trailing winding core (4); A cutting blade (13) for cutting the continuous sheet (a) that has passed between the nip roller (12) and the post-winding core (4), and a continuous sheet (a) cut by the cutting blade (13). Holding the pressing member (14) for pressing and adhering the tip (a1) to the peripheral surface of the post-winding core (4), the cutting blade (13) and the pressing member (14), In a continuous sheet winding device including a rotating arm (15) that rotates when cutting a continuous sheet (a). Then, as means for driving the rotating arm (15), when cutting the continuous sheet (a), air is stored in one cylinder chamber side and accumulated, and the other cylinder chamber is opened to the atmosphere side. As a result, an air cylinder device (16) that rapidly moves a portion from the piston rod (16a) to the rotating arm (15) is provided, and a pinion (31) is provided on the support shaft (31) of the rotating arm (15). 33) is fixed, and a rack (32) meshing with the pinion (33) is attached to the piston rod (16a), and the piston rod (16a) is restrained to a standby position until the continuous sheet (a) is cut. The restraint means (28) is provided.

  As described in claim 2, in the continuous sheet winding device according to claim 1, the restraining means is a trigger (28) that restrains the piston rod (16a) to a standby position, and the continuous sheet ( When the restraint by the trigger (28) is released at the time of cutting a), the rotating arm (15) can be driven by the air cylinder device (16).

  As described in claim 3, in the continuous sheet winding device according to claim 1, the shock absorber (30) for stopping the piston rod (16a) after the cutting of the continuous sheet (a) is completed. It can be provided in parallel with the piston rod (16a).

  According to a fourth aspect of the present invention, in the continuous sheet winding device according to the first aspect, the nip roller (12), the rotating arm (15), and the air cylinder device (16) are rotated. It is attached to the moving frame (17), and the rotating frame (17) can be moved toward the continuous sheet (a) when the continuous sheet (a) is cut.

  As described in claim 5, in the continuous sheet winding device according to claim 1, an adhesive layer may be formed on the peripheral surface of the core (3, 4).

  According to the present invention, at least two cores (3, 4) for the front winding and the rear winding, which are arranged in parallel to wind up the downstream side and the upstream side of the continuous sheet (a), respectively, and the rear winding A nip roller (12) that presses the continuous sheet (a) that passes through the vicinity of the core (4) to the pre-winding core (3) against the peripheral surface of the post-winding core (4); 12) and the cutting blade (13) that cuts the continuous sheet (a) that has passed between the winding core (4) and the leading edge of the continuous sheet (a) that is cut by the cutting blade (13) Holding the pressing member (14) to which (a1) is pressed and adhered to the peripheral surface of the post-winding core (4), the cutting blade (13) and the pressing member (14), the continuous sheet (A) a continuous sheet winding device including a rotating arm (15) that rotates at the time of cutting; As means for driving the rotating arm (15), when cutting the continuous sheet (a), air is stored in one cylinder chamber side and accumulated, and the other cylinder chamber is opened to the atmosphere side. Is provided with an air cylinder device (16) that rapidly moves a portion from the piston rod (16a) to the rotating arm (15), and a pinion (33) is provided on the support shaft (31) of the rotating arm (15). And a rack (32) meshing with the pinion (33) is attached to the piston rod (16a), and restraining means for restraining the piston rod (16a) in the standby position until the continuous sheet (a) is cut. Since (28) is provided, when the core (3, 4) is switched, the continuous sheet (a) is pressed against the core (4) by the nip roller (12). It is possible to cut the continuous sheet (a) by simultaneously cutting blade (13). That is, since the conventional crank mechanism is not interposed, the linear motion of the rack (32) is immediately converted into the circular motion of the pinion (33), and therefore, when the winding cores (3, 4) are switched, the continuous sheet (a) As soon as the nip roller (12) is pressed against the core (4), the continuous sheet (a) is cut by the cutting blade (13). The rotating arm (15) is rotated at a substantially constant high speed by the engagement of the rack (32) and the pinion (33), and the cutting blade (13) pulls the continuous sheet (a) with a substantially constant large moment force. Disconnect. Therefore, the leading end (a1), which is the upstream stump of the continuous sheet (a), is prevented from jamming on the peripheral surface of the post-winding core (4), and is stacked on the jammed portion. It is possible to prevent the occurrence of defective products.

  In the present invention, when the shock absorber (30) for stopping the piston rod (16a) after the cutting of the continuous sheet (a) is completed is provided in parallel with the piston rod (16a), The direction of the force applied to the shock absorber (30) can be matched to the direction of the piston rod (16a), so that excessive force is not applied to the shock absorber (30) and the failure of the shock absorber (30) is avoided. can do.

It is a schematic perspective view of the core switching part of the continuous sheet winding apparatus which concerns on this invention. It is a schematic longitudinal cross-sectional view at the time of core switching of a continuous sheet winding apparatus. It is a schematic longitudinal cross-sectional view at the time of winding of a continuous sheet winding apparatus. It is a figure explaining the effect | action of a core switching part, (A) shows at the time of start of core switching, (B) at the time of the cutting | disconnection of a continuous sheet, (C) shows the time of stapling of a continuous sheet respectively.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  As shown in FIGS. 2 and 3, the continuous sheet winding device has a reel unit 1, and is used for pre-winding and post-winding that winds the downstream side and the upstream side of the continuous sheet a on the reel unit 1, respectively. At least two winding cores 3 and 4 are provided in parallel.

  The continuous sheet a is paper, a synthetic resin, a metal foil, or the like discharged from a delivery unit such as a gravure printing machine (not shown), or a laminate of these.

  The reel unit 1 has a reel stand 5 that stands up from the floor on which the continuous sheet winding device is installed. A rotary shaft 7 is horizontally supported at the upper end of the reel stand 5 via a bracket 6, and a pair of left and right reel arms 8 and 9 project from the rotary shaft 7 outward in the radial direction in opposite directions. To do. The winding cores 3 and 4 are pivotally supported on each pair of the reel arms 8 and 9, respectively.

  Each of the winding cores 3 and 4 can be rotated by an electric motor (not shown) held by the reel arms 8 and 9. When the winding core 3 or 4 is rotated by driving the electric motor, the continuous sheet a is wound around the winding core 3 or 4. An electric motor (not shown) is also connected to the rotary shaft 7 in a power manner. When the winding cores 3 and 4 are switched, the latter electric motor is driven so that the winding cores 3 and 4 revolve around the rotary shaft 7. Thereby, as shown in FIG.2 and FIG.3, the position of the core 3 for pre-winding and the core 4 for post-winding interchanges.

  Although not shown, an adhesive layer is formed in advance on the peripheral surfaces of the cores 3 and 4. The adhesive layer is provided by applying an adhesive, sticking a double-sided tape, or the like. When the continuous sheet a can be attached to the surface of the cores 3 and 4 without using an adhesive layer, for example, when it can be attached by static electricity, the adhesive layer can be omitted.

  Further, a pair of left and right guide arms 10 and 11 protrude from the rotary shaft 7 in opposite directions at right angles to the reel arms 8 and 9, respectively. The guide rollers 10a and 11a of the continuous sheet a are pivotally supported on each pair of the guide arms 10 and 11 in parallel with the winding cores 3 and 4, respectively.

  As shown in FIGS. 1 to 3, the continuous sheet winding device has a winding core switching unit 2 adjacent to the reel unit 1. As will be described later, the winding of the continuous sheet a can be changed from the first winding core 3 to the second winding core 4 by the winding core switching unit 2.

  As shown in FIGS. 1, 2, and 4 (A), (B), and (C), the winding core switching unit 2 travels to the first winding core 3 through the vicinity of the second winding core 4. A nip roller 12 that presses the continuous sheet a against the peripheral surface of the winding core 4 for the subsequent winding, a cutting blade 13 that cuts the continuous sheet a that has passed between the nip roller 12 and the winding core 4 for the subsequent winding, The brush 14 which is a pressing member that presses and attaches the leading end a1 which is the cut end of the cut continuous sheet a to the peripheral surface of the winding core 4 for the rear winding, and the cutting blade 13 and the brush 14 are held continuously. The rotating arm 15 that rotates when the sheet a is cut and the air cylinder device 16 that drives the rotating arm 15 are included.

  As shown in FIGS. 1 to 4A, 4B, and 4C, the nip roller 12, the rotating arm 15, and the air cylinder device 16 of the winding core switching unit 2 are rotated together with the cutting blade 13 and the brush 14 in the left and right directions. It is held by the moving frame 17. In the vicinity of the reel stand 5, left and right struts 18 stand up from the floor, and a rotating frame 17 is supported between the left and right struts 18 so as to be pivotable in the vertical direction via a horizontal pivot 19. Piston cylinder devices 20 are spanned between the left and right rotating frames 17 and the left and right support columns 18, respectively.

  As shown in FIG. 3, when winding the downstream side of the continuous sheet a with the pre-winding core 3, the core switching unit 2 is moved to the inoperative position together with the rotating frame 17 by the contraction operation of the piston cylinder device 20. Ascend and wait. As shown in FIG. 1 and FIG. 2, when the winding of the continuous sheet a is changed from the first winding core 3 to the second winding core 4 by the winding core switching unit 2, the extension operation of the piston cylinder device 20 is performed. As a result, the core switching unit 2 is lowered to the operating position together with the rotating frame 17 to cut the continuous sheet a and attach it to the post-winding core 4, that is, the cores 3 and 4 are switched.

  As shown in FIGS. 2 and 3, various rotatable guide rollers 21 are horizontally stretched between the right and left columns 18 (perpendicular to the paper surface). A gravure printing machine or the like (not shown) is installed on the left side of the support 18 in FIGS. 2 and 3, and the continuous sheet a discharged from the delivery unit of the gravure printing machine or the like is being guided by these guide rollers 21. It goes to the cores 3 and 4 through the core switching unit 2. As shown in FIGS. 1 to 3, a guide roller 22 for introduction is also provided between the left and right rotating frames 17, and the continuous sheet a flowing through the guide roller 21 on the support column 18 side is introduced to this continuous sheet a. Enters the core switching section 2 while being guided by the guide roller 22 for use.

  As shown in FIGS. 1 and 4A, 4B, and 4C, the nip roller 12 of the winding core switching unit 2 is horizontally inserted between the left and right rotating frames 17 and is respectively inserted into the left and right rotating frames 17. It is rotatably supported between the tip ends of the left and right pivot levers 23 that are pivotally supported. The rotation lever 23 is pivotally supported by the rotation frame 17 on the upstream side when viewed in the traveling direction of the continuous sheet a, and the nip roller 12 is rotatably supported at the downstream end.

  A guide roller 24 is rotatably attached to the support shaft of the left and right turning levers 23 attached to the left and right turning frames 17 in parallel with the nip roller 12. The continuous sheet a travels between the guide roller 24 and the nip roller 12, and as shown in FIG. 3, the continuous sheet a is guided by the guide roller 24 when the core switching unit 2 is in the raised position.

  A piston cylinder device 25 is interposed between an intermediate portion of each of the left and right rotation levers 23 and each of the left and right rotation frames 17. As shown in FIGS. 2 and 4A, 4B, and 4C, when the piston cylinder device 25 is extended when the core switching unit 2 is in the lowered state, the rotating lever 23 is moved downward. The nip roller 12 that is rotated and supported by the rotation lever 23 passes through the vicinity of the winding core 4 for the last winding and travels to the winding core 3 for the previous winding. Press on. Thereby, the continuous sheet a adheres to the peripheral surface of the core 4 for back winding.

  As shown in FIGS. 1 and 4A, 4B, and 4C, the rotating arms 15 are respectively arranged with respect to the left and right rotating frames 17, and the cutting blade 13 is disposed between the tips of the left and right rotating arms 15. And the brush 14 are held. The left and right rotating arms 15 are fixed in a cantilever manner to a support shaft 31 spanned between the left and right rotating frames 17. The distal end of the rotating arm 15 protrudes to a position where it does not come into contact with the peripheral surface of the winding core 4 for the rear winding when the rotating arm 15 rotates about the support shaft 31.

  A guide roller 26 is also attached to the support shaft 31 passed between the left and right rotating arms 15, and the continuous sheet a passing through the guide roller 24 on the rotating lever 23 passes through the guide roller 26. To the outside of the core switching part 2.

  As shown in FIGS. 1 and 4A, 4B, and 4C, the cutting blade 13 includes the nip roller 12 and the guide roller 26 when the rotating arm 15 rotates counterclockwise about the support shaft 31. Between the tips of the left and right turning arms 15 so that the cutting edge faces the continuous sheet a between the two. The cutting blade 13 is formed in, for example, a sawtooth shape to facilitate cutting of the continuous sheet a.

  As shown in FIG. 4B, when the rotating arm 15 rotates from the upper side to the lower side with the support shaft 31 as a fulcrum, it is between the nip roller 12 and the trailing winding core 4 in the running continuous sheet a. A slightly downstream side from the sandwiched portion is cut by the cutting blade 13.

  As shown in FIGS. 1 and 4A, 4B, and 4C, the brush 14 extends substantially at right angles to the cutting edge of the cutting blade 13 and faces toward the nip roller 12 and the rear winding core 4. So that it protrudes between the ends of the left and right turning arms 15. Further, the brush 14 is implanted slightly behind the cutting edge of the cutting blade 13 when viewed in the descending direction of the cutting blade 13.

  Note that a cushion material such as a sponge may be provided instead of the brush 14.

  As shown in FIGS. 4B and 4C, when the rotating arm 15 rotates from the upper side to the lower side with the support shaft 31 as a fulcrum, it is the downstream side that is the stump of the continuous sheet a cut by the cutting blade 13. The front end a1 is pressed against the peripheral surface of the post-winding core 4 and adheres to the peripheral surface of the post-winding core 4.

  As shown in FIGS. 1, 2, and 4 (A), (B), and (C), the rotating arm 15 can be driven by an air cylinder device 16. The air cylinder device 16 is disposed with respect to the left and right rotating frames 17, and the cylinder is fixed to each rotating frame 17. The cylinder is fixed to each rotary frame 17 so that its axis extends in the longitudinal direction of each of the left and right rotary frames 17. Then, the piston rod 16a protrudes from the cylinder toward the support shaft 31 of the rotating arm 15. A substantially rod-shaped sliding body 27 is integrally connected to the tip of the piston rod 16a, and a rack 32 is provided on the sliding body 27 in parallel with the axis of the piston rod 16a. A pinion 33 that meshes with the rack 32 is fixed to the support shaft 31.

  As a result, when the piston rod 16a of the air cylinder device 16 expands and contracts and reciprocates linearly, the revolving arm 15 reciprocates as shown in FIGS. 4A, 4B, and 4C due to the engagement of the rack 32 and the pinion 33. With this rotation, the cutting blade 13 cuts the continuous sheet a, and the brush 14 presses the upstream end a1 that is the cut end of the continuous sheet a against the peripheral surface of the winding core 4 for the rear winding. That is, since the conventional crank mechanism is not interposed, the linear motion of the piston rod 16a and the rack 32 is immediately converted into the circular motion of the pinion 33. Therefore, when the winding cores 3 and 4 are switched, the continuous sheet a is moved by the nip roller 12. When pressed against the core 4, the continuous sheet a is quickly cut by the cutting blade 13. Further, the rotation arm rotates at a substantially constant high speed by the meshing of the rack and the pinion, and the cutting blade cuts the continuous sheet with a substantially constant large moment force.

  Therefore, the upstream side edge a1 of the continuous sheet a is prevented from jamming on the peripheral surface of the post-winding core 4, and the generation of defective products due to stacking on the jammed portion is prevented. Can do.

  Further, when the continuous sheet a is cut, the air cylinder device 16 stores air in one cylinder chamber side to accumulate pressure, and opens the other cylinder chamber to the atmosphere side, thereby releasing the piston rod 16a. Control is performed so as to rapidly move the portion reaching the rotating arm 15.

  More specifically, when cutting the continuous sheet a, a flow path switching valve, which is an electromagnetic valve (not shown), is operated to supply compressed air to one cylinder chamber side of the air cylinder device 16, and the other cylinder The room side is opened to the atmosphere side. That is, when the continuous sheet a is cut, the flow path switching valve operates, so that compressed air is supplied from the compressed air supply source (not shown) to the inside of the air pipe and one cylinder chamber, and at the same time, the other cylinder chamber Is released into the atmosphere. One flow path switching valve is desirably provided for one air cylinder device 16, and pressurization and release to the atmosphere are simultaneously performed by one flow path switching valve, but electromagnetic valves are provided for both cylinder chambers. You may do it.

  As a result, the rotating arm 15 rotates at a high speed from the top to the bottom in FIG. 4A, and the cutting blade 13 and the brush 14 are moved at a speed higher than the peripheral speed of the nip roller 12 and the winding core 4 for the rear winding. Descend. As a result, as shown in FIG. 4 (C), the upstream end a1 which is the cut end of the continuous sheet a adheres smoothly to the peripheral surface of the core 4 for subsequent winding without jamming. The continuous sheets a are also stacked on the leading end a1 in a smooth surface.

  As shown in FIGS. 1, 2, and 4A, 4B, and 4C, a trigger 28 is provided as a restraining means for restraining the rotating arm 15 to the standby position until the continuous sheet a is cut. It is done. The triggers 28 are respectively arranged with respect to the left and right rotating frames 17 and are pivotally supported by the rotating frames 17 so as to be rotatable up and down. A flange is provided at the tip of the trigger 28, and a roller 27a is provided on the sliding body 27 corresponding to the flange. In addition, a piston cylinder device 29 is interposed between the rotating frame 17 and the trigger 28, and the trigger 28 is reciprocally rotated by the expansion and contraction operation of the piston cylinder device 29, so that the collar portion is a sliding body. The 27 rollers 27a are engaged and disengaged.

  As shown in FIG. 4A, before the continuous sheet a is cut by the cutting blade 13, the flange portion of the trigger 28 is locked to the roller 27a of the sliding body 27, and the sliding body 27 is restrained to its standby position. In this restrained state, air is supplied into the cylinder of the air cylinder device 16 and accumulated.

  As shown in FIG. 4B, when the continuous cylinder a is cut, the other cylinder chamber in the air cylinder device 16 is opened to the atmosphere side, and at the same time, the piston rod of the piston cylinder device 29 is extended. 28 rotates and the collar part comes off the roller 27a of the sliding body 27.

  As described above, since air is constantly supplied and accumulated in the cylinder of the air cylinder device 16, when the trigger 28 is rotated and the collar portion is disengaged from the roller 15 a of the rotating arm 15, the piston rod 16a is contracted at a high speed with the rack 32, the pinion 33 rotates at a high speed, and the rotating arm 15 descends at a high speed downward.

  At this time, the distal end of the rotating arm 15 moves at a peripheral speed larger than the peripheral speed of the core 4 that rotates, and the continuous sheet a has a cutting blade 13 at the distal end of the rotating arm 15 as shown in FIG. Will be cut quickly. Further, as shown in FIG. 4C, at the same time as cutting, the tip end a1 which is a stump of the continuous sheet a is brushed on the peripheral surface of the post-winding core 4 by the brush 14 so as to present a smooth surface. It adheres to the peripheral surface of the core 4 for the rear winding. Thereafter, the upstream side of the continuous sheet a is wound around the winding core 4 for the rear winding.

  Since it is the pinion 33 and the rotating arm 15 that are rotated along with the cutting of the continuous sheet a, the inertial moment of the rotating part is generally small and the inertial force is also small. Accordingly, the air cylinder device 16 and the rotating portion are not easily damaged or damaged, and durability is imparted to the winding device.

  As shown in FIGS. 4A, 4B, and 4C, the shock absorber 30 that stops the piston rod 15a, the sliding body 27, the rack 32, and the like after the cutting of the continuous sheet a is completed is rotated left and right. It is attached to the frame 17. The shock absorber 30 is provided in parallel with the piston rod 16a. Further, the sliding body 27 is provided with a protrusion 27b capable of coming into contact with the shock absorber 30 in a direction substantially perpendicular to the piston rod 16a.

  Thus, as shown in FIG. 4C, after the cutting of the continuous sheet a is completed, the protrusion 27b of the sliding body 27 recedes linearly together with the piston rod 15a and comes into contact with the shock absorber 30. Therefore, as compared with the conventional method in which the rotation link is applied to the shock absorber, the shock absorbing direction of the shock absorber 30 and the moving direction of the piston rod 15a match, and the load on the shock absorber can be reduced. Failure of the shock absorber 30 can be avoided.

  As the shock absorber 30, for example, a dashpot can be used.

  Next, the operation of the continuous sheet winding device having the above-described configuration will be described.

  (1) As shown in FIG. 3, the continuous sheet “a” discharged from a gravure printing machine or the like is wound up in a roll shape on a pre-winding core 3 attached to a reel arm 8 on a reel stand 5.

  At this time, the core switching unit 2 of the continuous sheet take-up device stops at the raised position and stands by. The continuous sheet a discharged from the gravure printing machine or the like is guided by various guide rollers 21 supported by the support column 18 and further travels in the direction of the arrow while being guided by the guide rollers 22 and 24 in the rotating frame 17. It is wound up by the pre-winding core 3 that rotates in the direction of the arrow by the motor that does not.

  (2) When the downstream side of the continuous sheet a is wound into a roll by a predetermined length around the winding core 3 for the pre-winding, the reel arms 8 and 9 are rotated clockwise around the rotary shaft 7 in FIG. Turn 180 degrees. As a result, the pre-winding core 3 revolves while rotating from the position shown in FIG. 3 to the position shown in FIG. Accordingly, the continuous sheet a passes through the guide rollers 22 and 24 in the rotating frame 17 and then passes through the guide rollers 10a of the guide arm 10 as shown by a two-dot chain line in FIG. The core 3 is wound up.

  (3) During this period, the post-winding core 4 is attached to the reel arm 9 on the reel stand 5 by the operator. The post-winding core 4 starts to rotate by an electric motor (not shown). The post-winding core 4 can be attached when the pre-winding core 3 is attached.

  (4) When the continuous sheet a is fully wound on the pre-winding core 3, the piston cylinder device 20 is extended, and the rotating frame 17 of the core switching unit 2 is moved from the position indicated by the two-dot chain line in FIG. Descent to the position of the solid line.

  (5) When the winding core switching unit 2 is lowered, the nip roller 12 stops at a position approaching the trailing winding core 4 as shown in FIGS. 1 and 4A. At this time, the continuous sheet a enters the winding core switching unit 2 and flows to the first winding core 3 through the upstream guide roller 22, the nip roller 12, and the guide roller 26 on the support shaft 31 of the rotating arm 15 in order.

  (6) As shown in FIG. 4 (B), the piston cylinder device 25 is extended, the turning lever 23 is turned downward, and the nip roller 12 supported by the turning lever 23 passes therearound. The continuous sheet a traveling to the first winding core 3 is pressed against the peripheral surface of the second winding core 4. Thereby, the continuous sheet a adheres to the peripheral surface of the core 4 for back winding.

  Note that an adhesive layer is formed in advance on the circumferential surface of each of the winding cores 3 and 4 for the first winding and the second winding.

  (6) As shown in FIG. 4B, the piston cylinder device 25 that drives the rotating lever 23 extends, and at the same time, the piston rod of the piston cylinder device 29 that drives the trigger 28 extends, Turn clockwise. Thereby, the collar part of the trigger 28 comes off from the roller 27a of the sliding part 27, and the restriction of the sliding part 27 is released.

  (7) The air cylinder device 16 stores air in the cylinder and accumulates pressure in the state shown in FIG. As shown in FIG. 4B, when the trigger 28 releases the sliding portion 27, the portion from the piston rod 16a to the sliding portion 27 is rapidly rotated at a large initial speed due to the accumulated pressure of air in the cylinder.

  In the air cylinder device 16, before the state shown in FIG. 4A, the solenoid valve on one cylinder chamber side is opened and compressed air is supplied to one cylinder chamber, and the solenoid valve on the other cylinder chamber side. Is closed. Therefore, as shown in FIG. 4B, the piston cylinder device 25 on the nip roller 12 side extends, and at the same time, the piston cylinder device 29 on the trigger 28 side extends, and the other cylinder chamber side electromagnetic valve in the air cylinder device 16 moves. Open to the atmosphere.

  As a result, the piston (not shown) of the piston rod 16a of the air cylinder device 16 moves rapidly toward the other cylinder chamber, and the piston rod 16a moves from the position shown in FIG. 4 (A) to the position shown in FIG. The sliding portion 27 integrated with the piston rod 16a also moves linearly at a high speed. Further, the pinion 33 that meshes with the rack 32 of the sliding portion 27 performs a rotational motion with a substantially constant angular acceleration, and the rotational arm 15 integrated with the pinion 33 also performs the same rotational motion.

  By the high-speed rotation of the rotation arm 15, the cutting blade 13 and the brush 14 are lowered at a speed larger than the peripheral speed of the nip roller 12 and the trailing winding core 4, and the continuous sheet a is nip roller as shown in FIG. As soon as it is pasted around the winding core 4 by 12, the cutting blade 13 cuts the downstream side slightly from the sandwiched portion between the nip roller 12 and the winding core 4. At the same time as the continuous sheet a is cut, as shown in FIG. 4C, the tip end a <b> 1, which is the upstream end, is pressed against the circumferential surface of the post-winding core 4 by the brush 14. It adheres to the peripheral surface of. As a result, the upstream side edge a1 of the continuous sheet a is in close contact with the circumferential surface of the post-winding core 4 without jamming, and the subsequent continuous sheet a is also a smooth edge. It is wound up so as to be stacked on the part a1.

  Except for the cutting blade 13 and the brush 14, the pinion 33 and the rotating arm 15 are rotated along with the cutting of the continuous sheet a. The inertia moment of these rotating portions is generally small and the inertial force is also small. Therefore, an excessive force does not act on the air cylinder device 16 and the rotating portion.

  (8) As shown in FIG. 4 (C), after the rotating arm 15 is rotated downward and the brush 14 passes through the peripheral surface of the winding core 4 for the rear winding, the protrusion 27b of the sliding body becomes the piston rod. It recedes linearly with 15a and hits the shock absorber 30 to stop.

  (9) Thus, the switching of the cores 3 and 4 is completed, and as shown in FIG. 3, the core switching unit 2 moves up to the standby position together with the rotating frame 17 by the contraction operation of the piston cylinder device 20. Also, the various piston cylinder devices 16, 25, 29 in the core switching unit 2 operate, and the rotating arm 15, the nip roller 12, and the trigger 28 are moved from the position of FIG. 4C to the original of FIG. Return to position.

  (10) Thereafter, as shown in FIG. 3, the post-winding core 4 continues to rotate, and the upstream side of the continuous sheet a is wound into a roll. Further, the downstream side of the continuous sheet a wound around the pre-winding core 3 is removed from the reel arm 8, and a new core 4 is attached to the trace.

  In addition, this invention is not limited to the said embodiment, A various change is possible within the range of the summary of this invention. For example, in the above embodiment, the rotating frame is provided so as to descend from the upper standby position, but the entire continuous sheet winding device including the rotating frame is configured upside down, It is also possible to raise the rotating frame from the bottom to the top when switching the winding core.

a ... continuous sheet a1 ... tip of continuous sheet 3 ... winding core 4 ... rewinding core 12 ... nip roller 13 ... cutting blade 14 ... pressing member 15 ... rotating arm 16 ... air cylinder device 16a ... piston rod 17 ... Rotating frame 28 ... Trigger 30 ... Shock absorber 31 ... Support shaft 33 ... Pinion 32 ... Rack

Claims (5)

  At least two cores for the front winding and the rear winding arranged in parallel to wind up the downstream side and the upstream side of the continuous sheet respectively, and through the vicinity of the core for the rear winding to the core for the front winding A nip roller that presses the traveling continuous sheet against the peripheral surface of the winding core for the subsequent winding, a cutting blade that cuts the continuous sheet that passes between the nip roller and the winding core for the subsequent winding, and a continuous sheet that is cut by the cutting blade A pressing member that presses and attaches the leading end portion to the peripheral surface of the winding core for the subsequent winding, and a rotating arm that holds the cutting blade and the pressing member and rotates when the continuous sheet is cut. In the continuous sheet winding device, as a means for driving the rotating arm, when cutting the continuous sheet, air is stored and accumulated in one cylinder chamber side, and the other cylinder chamber is connected to the atmosphere side. Fixie by opening to An air cylinder device is provided for rapidly operating a portion from the rod to the rotating arm, a pinion is fixed to a support shaft of the rotating arm, a rack meshing with the pinion is attached to the piston rod, and the continuous seat A continuous sheet winder comprising a restraining means for restraining the piston rod at the standby position until the time of cutting.   2. The continuous sheet winding apparatus according to claim 1, wherein the restraining means is a trigger for restraining the piston rod at a standby position, and when the restraint by the trigger is released when the continuous sheet is cut, the air cylinder device causes the A continuous sheet take-up device, wherein a rotating arm is driven.   2. The continuous sheet winding apparatus according to claim 1, wherein a shock absorber for stopping the piston rod after the cutting of the continuous sheet is completed is provided in parallel with the piston rod. .   2. The continuous sheet winding apparatus according to claim 1, wherein the nip roller, the rotating arm, and the air cylinder device are attached to a rotating frame, and the rotating frame is continuous when the continuous sheet is cut. A continuous sheet take-up device characterized by being moved to the sheet side.   2. The continuous sheet winding apparatus according to claim 1, wherein an adhesive layer is formed on a peripheral surface of the core.

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