JP5197941B2 - Winding shaft deflection preventing mechanism, winding device and winding method - Google Patents

Description

  The present invention prevents bending that occurs in a winding shaft when winding a web, and in particular, winding shaft bending that prevents torque bending that occurs due to an increase in the amount of torque applied to the winding shaft. The present invention relates to a prevention mechanism, a winding device, and a winding method.

Conventionally, a web is wound around a winding shaft. For example, FIG. 7 shows a side view of a state in which the web W is wound from the raw roll R by the winding shaft S with a constant tension F (N), and (a) shows a certain time t from the start of winding. The winding state after ₁ (s) has elapsed, similarly (b) is the winding state after a certain time t ₂ (s) has elapsed, and t ₁ <t ₂ . Here, the width of the web W is L (m), the unit weight of the web W is m (kg / m ² ), the winding speed is v (m / s), t ₁ = t (s), t ₂ = 2t Assuming (s), the weights M1 (kg) and M2 (kg) of the wound products R1 and R2 are M1 = L × m × v × t ₁ (kg) and M2 = L × m × v. _{× t 2 = L × m ×} v × 2t = 2M1 (kg) , and the winding weight is doubled.

  The increase in the weight of the wound product may cause the winding shaft to bend. Since the bending of the winding shaft affects the winding shape of the wound product, it is necessary to prevent this bending. Conventionally, there is a winding shaft deflection correcting device described in Patent Document 1 (Japanese Utility Model Laid-Open No. 03-116343) as a device for preventing the winding shaft from being bent due to an increase in the weight of the wound product.

  This take-up shaft deflection correction device is configured to be attached as close to the end surface of the web as possible in accordance with the width of the web taken up by a winder. The position correction device (9) is attached between the inner metal (6) and the support metal (4) and between the cylinder frame (8) and the support frame (5), so that the wound web is The deflection of the winding shaft caused by the weight can be reduced. The reference numerals in parentheses above are those used in Patent Document 1, and the same applies to the following.

On the other hand, when the web is wound up, the winding diameter of the wound product increases as shown in FIG. 7, and accordingly, the torque corresponding to the tension applied to the winding shaft S also increases. For example, in FIG. 7, when the tension is F (N), the winding diameter in the case of (a) is r ₁ (m), and the winding diameter of (b) is r ₂ = 2r ₁ (m), (a) In this state, the tension torque T1 (N · m) applied to the winding shaft S is T1 = F × r ₁ (N · m), while the tension torque T2 (N · m) in the case of (b). m) is T2 = F × r ₂ = F × 2r ₁ = 2T1 (N · m), and the tension torque is doubled. Although the take-up shaft S may bend due to the increase in the torque corresponding to the tension, the take-up shaft deflection correcting device described in Patent Document 1 prevents the take-up shaft from being bent due to the tension-related torque. I couldn't.

Japanese Utility Model Publication No. 03-116343

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a winding shaft deflection preventing mechanism and a winding device that prevent torque deflection caused by an increase in torque corresponding to the tension applied to the winding shaft. And providing a winding method.

In order to achieve the above object, the present invention provides a take-up shaft deflection preventing mechanism for preventing the take-up shaft from winding up the web, wherein the bend is generated by winding the take-up product around the web. Torque deflection caused by an increase in the torque corresponding to the tension applied to the winding shaft as the diameter increases, and gravity deflection caused by an increase in the gravity applied to the winding shaft as the weight of the wound product increases. The first urging means for urging the winding shaft from the direction in which the tension is applied in response to the torque corresponding to the tension applied to the winding shaft that increases as the winding diameter of the wound product increases. And a means for biasing the take-up shaft from the direction in which the gravity is applied in response to the gravity applied to the take-up shaft that increases with an increase in the winding diameter of the take-up product. has a preventing means bending for gravity with a biasing means 2, the And wherein the door.

  As the material of the web, various materials can be applied as long as it can be wound in a sheet form such as a film or paper. In addition, as a mode of winding by the winding shaft, the width of the raw roll, such as a rewinding process in which the web is wound from the raw roll without any processing, or a process such as printing is performed in the middle and the winding is performed. And an aspect in which the same width is taken up and an aspect in which winding is performed by applying multiple slits and taking up in the middle are also included. The same applies to the following wound product and winding method.

  As described above, when the web is wound by the winding shaft, the torque and weight of the wound product increase in time series. Therefore, if the winding shaft is biased by the biasing means in accordance with the tension torque and weight increase applied to the winding shaft in time series, the winding shaft can be prevented from being bent. This is more preferable. For example, a spring, an air cylinder, a hydraulic cylinder, etc. can be applied as the biasing means.

  The torque deflection preventing means or the torque deflection preventing means and the gravity deflection preventing means may include a simple attachment / detachment mechanism that can be easily attached to and detached from the take-up shaft.

  In the winding shaft deflection correcting device described in Patent Document 1, cylindrical inner metal (6) is disposed on both sides of the web (2), and these are inserted into the correcting device by the winding shaft (1). It is configured to be mounted, and in order to remove the correction device from the winding shaft (1), it is necessary to pull out the winding shaft (1) from the inner metal (6), which requires a lot of time and labor for the work. It is. Therefore, in the present invention, when removing the torque deflection preventing means or the torque deflection preventing means and the gravity deflection preventing means from the take-up shaft, the take-up shaft is pulled out as in the cited document 1. Without any problem, the prevention means is configured to include a simple attachment / detachment mechanism that can be removed and attached. For example, as this simple attachment / detachment mechanism, a structure capable of advancing and retracting these preventing means in a direction perpendicular to the axial direction of the take-up shaft, for example, a mechanism including an air cylinder, a hydraulic cylinder, or the like is applicable.

The torque deflection preventing means, the torque deflection preventing means, and the gravity deflection preventing means are a torque pad that contacts the winding shaft, a torque pad and a gravity pad, or the winding. You may comprise so that it may have a roll member which can be rotationally supported with respect to an axis | shaft. As this roll member, for example, a roll member that can contact the roll surface with the take-up shaft at the start of take-up and that can rotate in synchronization with the shaft rotation of the take-up shaft at the time of take-up can be applied It is.
Further, the torque deflection preventing means, or the torque deflection preventing means and the gravity deflection preventing means may be configured to have an integral member that comes into contact with the winding shaft.

  Moreover, in order to achieve the said objective, this invention is comprised as a winding device which has an above-described winding axis | shaft deflection prevention mechanism, It is characterized by the above-mentioned.

Further, in order to achieve the above object, a winding method for winding a web by the take-up shaft, it increases with increasing winding diameter of the winding product wound the web in response to tension forces corresponding torque biases in the direction the tension is applied by the first biasing means of the above winding shaft, the tension corresponding torque exerted on the winding shaft with an increase in the winding diameter of the winding product A torque deflection preventing step for preventing torque deflection caused by an increase in the rotation of the winding shaft, and a second winding shaft corresponding to the gravity applied to the winding shaft that increases as the winding diameter of the wound product increases. And a gravity deflection preventing step of preventing gravity deflection generated by increasing the gravity applied to the take-up shaft with the increase in the take-up product. It is characterized by that.

  As described above, according to the present invention, as the winding diameter of the wound product wound with the web increases, the torque deflection caused by the increase in the torque corresponding to the tension applied to the winding shaft is prevented. Thus, the torque deflection that can occur in the winding shaft can be prevented, and a wound product with a good winding shape can be manufactured.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In this embodiment, the case where the present invention is applied in the process of slitting (cutting) a web with a slitter (winding machine) and winding the slit web with a winding shaft will be described. However, it is not limited to this.

  FIG. 1 is a schematic perspective view for explaining a state in which a web is slit and a slit web is taken up by a take-up shaft, FIG. 2 is a cross-sectional view for explaining a schematic configuration of a take-up device, and FIG. FIG. 4 is an operation explanatory view of the take-up shaft deflection preventing device, and FIGS. 5 and 6 are cross-sectional views showing other embodiments of the take-up shaft deflection preventing device.

  First, in this embodiment, as shown in FIG. 1, a wound product is manufactured by a feeding process, a slit process, and a winding process. Specifically, the web W fed out from the raw roll R is slit by a slit blade (not shown), and the slit web W is wound by winding shafts S1 and S2 arranged in two upper and lower stages. In this embodiment, the winding shaft deflection preventing mechanism, winding device and winding method of the present invention are applied to this winding process.

  Next, a schematic configuration of the winding device of the present invention will be described with reference to FIG.

The winding device 100 of the present invention includes a pair of frames 1 and 1 that are arranged to face each other in parallel, and winding shafts S1 and S2 that are horizontally placed on the frames 1 and 1 and are arranged in two stages vertically. Further, a take-up shaft deflection preventing device 3 is provided for each take-up shaft S1 and S2 and is fitted and attached by each mounting rod 2 mounted horizontally on the frames 1 and 1. Further, friction 4 capable of adjusting the winding tension is mounted on the outer peripheral surface of the winding shafts S1 and S2, and a plurality of winding cores 5 are arranged at predetermined positions on the outer periphery. As the friction 4, for example, air friction, mechanical friction, or the like is applicable. On each of the cores 5, the slit webs are wound around the core 5, and wound products R _a-1 , R _a-2 ... R _b-1 , R _b-2 , R _{b- 3}

  Next, the winding shaft deflection preventing device 3 will be described with reference to FIG. FIG. 3 is a cross-sectional view of the take-up shaft deflection preventing device 3 as viewed from the direction of arrow A in FIG. 2, and the web winding direction is the direction of arrow B in the drawing. The take-up shaft deflection preventing device 3 is also a device that realizes the take-up shaft deflection preventing mechanism of the present invention. Hereinafter, the winding shaft S, the winding product R1, and the winding diameter r will be described. In addition, in addition, the following winding shaft bending prevention device shows one embodiment of the present invention, and is not limited to the following configuration.

  The take-up shaft deflection preventing device 3 includes a first cylinder 31 and a slide plate 32, and the first cylinder 31 is mounted on a pedestal 33. The base 33 is provided with a fitting insertion hole 331 into which the mounting rod 2 shown in FIG. 2 is fitted, and when the mounting rod 2 is fitted into the fitting insertion hole 331, the winding shaft deflection preventing device 3 is wound. It attaches to the taking device 100 (refer FIG. 2). The first cylinder 31 is provided with a first piston 311 capable of moving back and forth in the horizontal direction. A slide plate 32 is attached to the tip of the first piston 311, and the slide plate 32 is mounted on the pedestal 33. It is possible to advance and retreat. The slide plate 32 is provided with screw holes (not shown) (four in this embodiment), and torque fine adjustment screws 35 (four in this embodiment) are fitted into the screw holes. It is inserted.

  Further, the torque fine adjustment screw 35... Has the slide plate 32 and the torque pad 34 fixed by screwing, and the slide plate 32 and the torque pad 34 can be screwed through a gap. ing. The torque pad 34 is a direct member that abuts against the winding shaft S, more specifically, the friction 4 and prevents the torque deflection that may occur in the winding shaft S, and prevents the winding shaft deflection of the present invention. One of the mechanisms. The degree of contact between the torque pad 34 and the friction 4 can be finely adjusted by tightening the torque fine adjustment screws 35. The torque pads 34 and the torque fine adjustment screws 35 are members for fine adjustment in the initial setting of the take-up shaft deflection preventing mechanism of the present invention. 32 may directly contact the friction 4.

  In this way, by adjusting the first piston 311 of the first cylinder 31 to fix the torque pad 34 in contact with the friction 4 and starting the winding of the web, the winding shaft S Thus, the torque corresponding to the tension generated in step 1 is absorbed by the torque pad 34, and the torque deflection occurring in the winding shaft S can be prevented.

  In the present embodiment, the pedestal 33 is provided with a second piston 361 that can move up and down in the vertical direction so that the take-up shaft deflection preventing device 3 can be easily detached from the take-up shaft S. Two cylinders 36 are connected. The pedestal 33 is pivotally supported by the mounting rod 2 and rotates about the axis of the mounting rod 2 in accordance with the vertical movement of the second piston 361.

  Here, as described above, the tension torque T applied to the winding shaft S is T = F × r (N · m) when the tension is F (N) and the winding diameter r (m). Since the torque increases proportionally, it is preferable to bias the torque pad 34 against the take-up shaft S in accordance with an increase in the torque T for the tension. The movement amount of the first piston 311 is controlled according to the increase in the winding diameter r.

  That is, in this control device, the radius of the winding core 5, the width of the web W, the unit weight of the web W, the winding speed, the tension, and the like are stored in advance, and the change in the winding diameter r of the wound product R1 over time. It is configured to be computable. Further, from the calculated value of the winding diameter r, the value of the increased torque for the tension is calculated, and the first cylinder 31 has a first force of the first cylinder 31 so as to apply a force against the calculated increase to the winding shaft S. The piston 311 is moved toward the winding shaft S. This movement becomes an urging means for the take-up shaft S, so that torque deflection can be reliably prevented. Note that the timing of this movement may be continuous or intermittent, but either may be used and the timing may be stored in advance in the control device.

  In the present embodiment, the second cylinder 36 functions as a simple attachment / detachment mechanism that allows the take-up shaft deflection preventing device 3 to be easily attached / detached, and also prevents the take-up shaft S from being deflected by gravity. In addition to the second cylinder 36, it also functions as a bending prevention means, and it is possible to prevent gravity winding of the winding shaft S with respect to the winding shaft deflection preventing device 3 by providing the following configuration.

  That is, the take-up shaft deflection preventing device 3 includes a second cylinder 36 having a second piston 361, a fixed plate 37, and a gravity pad 38 as gravity deflection preventing means.

  The second cylinder 36 includes the second piston 361 as described above, and the pedestal 33 is connected to the tip of the second piston 361, and the pedestal 33 moves up and down with respect to the second piston 361. It rotates around the axis of the mounting rod 2 according to the operation. A fixing plate 37 is fixed to the pedestal 33. The fixing plate 37 is provided with unillustrated screw holes (four in this embodiment), and the screw holes are finely adjusted for gravity. Screws 39 (four in this embodiment) are inserted.

  Further, the gravity fine adjustment screws 39... Have the pedestal 33 and the gravity pad 38 fixed by screwing via a fixing plate 37, and the fixing plate 37 and the gravity pad 38 are screwed through a gap. It has become possible. The gravity pad 38 is a direct member that abuts against the winding shaft S, specifically, the friction 4 and prevents the gravity deflection that may occur in the winding shaft S, and prevents the winding shaft deflection of the present invention. One of the mechanisms. The degree of contact between the gravity pad 38 and the friction 4 can be finely adjusted by tightening the gravity fine adjustment screws 39. The gravity pads 38 and the gravity fine adjustment screws 39 are members for fine adjustment in the initial setting of the take-up shaft deflection preventing mechanism of the present invention. 37 may be brought into direct contact with the friction 4.

  Thus, if the gravity pad 38 is fixed in contact with the friction 4 by adjusting the second piston 361 of the second cylinder 36 and the web winding is started, the winding shaft S The gravity is absorbed by the gravity pad 38, so that the gravity deflection that occurs on the winding shaft S can be prevented.

  Here, since the winding weight increases with time as described above, it is preferable to urge the gravity pad 38 against the winding shaft S in accordance with the increase in weight. A control device (not shown) is connected to the second cylinder 36 to control the amount of movement of the second piston 361 in accordance with the increase in the weight of the wound product.

  That is, in this control device, as described above, the radius of the core 5, the width of the web W, the unit weight of the web W, the winding speed, the tension, and the like are stored in advance, and the weight of the wound product R1 over time is stored. The change can be calculated. Further, the calculated increase in the weight of the take-up product is calculated, and the second piston 361 of the second cylinder 36 is applied to the take-up shaft so as to apply a force against the calculated increase to the take-up shaft S. Move each to S. This movement becomes an urging means for the take-up shaft S, so that gravity deflection can be reliably prevented. Note that the timing of this movement may be continuous or intermittent, but either may be used and the timing may be stored in advance in the control device.

  Next, the operation of the take-up shaft deflection preventing device 3 configured as described above will be described with reference to FIGS. 3 and 4.

  First, an operation for preventing gravity deflection will be described with reference to FIG. 4A shows a state before the winding of the web W is started and the winding shaft deflection preventing device 3 is mounted on the winding shaft S, and FIG. 4B shows the second piston 361 of the second cylinder 36. (C) shows a state where the second piston 361 of the second cylinder 36 is moved upward. First, as described above, the mounting rod 2 is fitted into the fitting insertion hole 331 of the winding shaft deflection preventing device 3 and mounted on the winding device 100 shown in FIG. Next, the cylinders 31 and 36 are adjusted so that the gravity pad 38 and the torque pad 34 abut against the friction 4, and then each torque fine adjustment screw 35..., Gravity fine adjustment screw 39. Adjust the tightening degree. This state is the state shown in (a) (hereinafter, this state is referred to as “initial state”).

  When winding of the web W is started from the initial state, the weight of the wound product R1 gradually increases. In response to this increase in weight, the control device controls the second cylinder 36 and lowers the second piston 361. Then, in response to this operation, the pedestal 33 rotates in the direction of arrow X1 in the figure with the mounting rod 2 as the center of rotation and tilts upward to the left, and the second cylinder 36 also moves in the direction of arrow X2 in the figure and tilts backward. To do. This state is the state shown in (b), and by this operation, it is possible to prevent the gravity pad 38 from pushing up the winding shaft S via the friction 4 and bending the winding shaft S.

  On the other hand, when the second piston 361 of the second cylinder 36 is raised from the initial state, the pedestal 33 rotates in the direction of the arrow Y1 in the figure with the mounting rod 2 as the center of rotation in response to this operation. While tilting upward, the second cylinder 36 also moves in the direction of arrow Y2 in the figure and tilts forward. This state is the state shown in (c). This operation works so as to weaken the pushing force of the gravity pad 38 to the take-up shaft S. This operation is mainly performed when the take-up shaft deflection preventing device 3 is removed from the take-up shaft S. is there. More specifically, as described above, when the second piston 361 is raised, the pedestal 33 is inclined to the right as shown in FIG. 4C, and the gravity pad 38 is moved to the winding shaft S. Move away from. On the contrary, the torque pad 34 approaches the winding shaft S due to this movement, and therefore the first piston 311 is retracted by the control device, and the torque pad 34 is separated from the winding shaft S. A simple attachment / detachment mechanism is realized by this series of operations, and the take-up shaft deflection preventing device 3 can be easily attached / detached from the take-up shaft S. In addition, when mounting | wearing, what is necessary is just to perform the operation | movement of said (b), and by this, the winding shaft bending prevention apparatus 3 can be easily mounted | worn with respect to the winding shaft S.

  On the other hand, regarding the operation for preventing torque deflection, independently of the operation for preventing gravity deflection, the control device controls the first cylinder 31 and applies a force against the calculated increase to the winding shaft S. The first piston 311 of the first cylinder 31 is moved toward the take-up shaft S to give. Thereby, torque deflection can be prevented.

  Next, another embodiment of the take-up shaft deflection preventing device 3 will be described with reference to FIGS. 5 and 6.

  5 and 6 show the slide plate 32, the torque pad 34, the torque fine adjustment screw 35, the fixing plate 37, the gravity pad 38, and the gravity plate in the winding shaft deflection preventing device 3 of the above embodiment. The parts of the fine adjustment screws 39... Are transformed into the roll member 6 in FIG. 5 and the integrated member 7 in FIG. 6, and the other parts are the same as in the above embodiment.

  In the other embodiment shown in FIG. 6, the integrated member 7 is configured to be slidable on the pedestal 33.

  With the configuration described above, the take-up shaft deflection preventing device that employs the take-up shaft deflection preventing mechanism of the present invention can be installed at any place on the take-up shaft, and as described above, Even when the take-up shaft is arranged in two upper and lower stages, it can be installed and can be easily attached and detached. In addition, the winding shaft deflection preventing device that can be easily attached and detached as described above can prevent the occurrence of gravity deflection and torque deflection, thereby making it possible to manufacture a wound product having a good winding shape.

The schematic perspective view explaining the state which slits a web and winds up the slit web by a winding shaft. Sectional drawing explaining schematic structure of a winding apparatus. Sectional drawing explaining schematic structure of a winding shaft bending prevention apparatus. Operation | movement explanatory drawing of a winding shaft bending prevention apparatus. Sectional drawing which shows other embodiment of a winding shaft bending prevention apparatus. Sectional drawing which shows other embodiment of a winding shaft bending prevention apparatus. The side view explaining a mode that it winds up with a winding shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Mounting rod 3 Winding shaft bending prevention apparatus 31 1st cylinder 311 1st piston 32 Slide plate 33 Base 331 Insertion hole 34 Torque pad 35 Torque fine adjustment screw 36 2nd cylinder 361 2nd cylinder Piston 37 Fixed plate 38 Gravity pad 39 Gravity fine adjustment screw 4 Friction 5 Winding core 6 Roll member 7 Integrated member 100 Winding device R Original roll W Web S, S1, S2 Winding shaft F Tension R1, R2, R _a-1 , ... R _b-1 ... Winding product r ₁ , r ₂ , r Winding diameter T1, T2 Tension torque

Claims (8)

A take-up shaft bending prevention mechanism for preventing the take-up shaft from winding the web;
The deflection is caused by an increase in the torque corresponding to the tension applied to the take-up shaft with an increase in the winding diameter of the take-up product obtained by winding the web, and the increase in the weight of the take-up product. It is a gravity deflection that occurs when the gravity applied to the winding shaft increases .
First urging means for urging the take- up shaft from the direction in which the tension is applied in response to a torque corresponding to the tension applied to the take-up shaft that increases as the winding diameter of the take-up product increases. A means for preventing torque deflection ;
For gravity using a second urging means for urging the winding shaft from the direction in which the gravity is applied in response to the gravity applied to the winding shaft that increases as the winding diameter of the wound product increases. Bending prevention means,
A winding shaft deflection prevention mechanism characterized by comprising: The torque deflection preventing means, or the torque deflection preventing means and the gravity deflection preventing means,
2. The winding shaft deflection preventing mechanism according to claim 1 , further comprising a torque pad abutting against the winding shaft, or a torque pad and a gravity pad. The torque deflection preventing means, or the torque deflection preventing means and the gravity deflection preventing means,
The winding shaft deflection preventing mechanism according to claim 1 , further comprising a roll member that can be rotatably supported with respect to the winding shaft. The torque deflection preventing means, or the torque deflection preventing means and the gravity deflection preventing means,
The winding shaft deflection preventing mechanism according to claim 1 , further comprising an integral member that abuts against the winding shaft. A pedestal that rotates about a mounting shaft disposed parallel to the winding shaft as a rotation shaft;
The first urging means is
Attached to the pedestal,
The second urging means is
The winding shaft deflection preventing mechanism according to any one of claims 1 to 4 , wherein the winding shaft is biased by applying a turning force to the pedestal.   A simple attachment / detachment mechanism for rotating the pedestal in a direction opposite to the direction in which the gravity deflection occurs by the second urging means, and separating the torque deflection prevention means and the gravity deflection prevention means from the take-up shaft. The winding shaft deflection preventing mechanism according to claim 5, comprising: A winding device comprising the winding shaft deflection preventing mechanism according to any one of claims 1 to 6 . A winding method for winding a web with a winding shaft,
In response to tension forces corresponding torque you increase with increasing winding diameter of the winding product was wound the web is urged in the direction the tension is applied by the first biasing means of the above winding shaft, A torque deflection preventing step for preventing torque deflection caused by an increase in the torque corresponding to the tension applied to the winding shaft with an increase in the winding diameter of the wound product ;
In response to the gravity applied to the winding shaft that increases as the winding diameter of the wound product increases, the winding shaft is urged from the direction in which the gravity is applied by the second urging means, and the winding A gravity-deflection preventing process for preventing gravity-deflection that occurs due to an increase in gravity applied to the winding shaft as the product increases;
The winding method characterized by having.

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