Winding device

Abstract

To provide a winding device capable of directly and precisely measuring a chucking pressure when chucking a winding core with a pair of right and left chucking members.SOLUTION: There is provided a winding device comprising a pair of a right chuck member 22 and a left chuck member 20 for chucking a circularly tubular winding core 1 for winding a web W from both right and left sides, the winding core 1 being chucked between a left taper cone 46 of the left chuck member 20 and a right taper cone 86 of the right chuck member 22. A pressure gauge 52 for measuring a chucking pressure with which the left taper cone 46 presses a left rotary part 34 is provided between the left rotary part 34 and the left taper cone 46.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a winding device for winding and unwinding a web. [Background technology]

[0002] Conventionally, when a web is subjected to a heat treatment or the like, the web is unwound from a core around which the web is wound, and the heat treatment or the like is performed. Then, after the heat treatment or the like has been completed, the web is wound onto the core by a winding device. In a winding device such as an unwound device or a winding device, the cylindrical core around which the web is wound is chucked by a pair of left and right chuck members, and the pair of left and right chuck members is rotated by a motor to unwind or wind the web. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-130528 Summary of the Invention [Problem to be solved by the invention]

[0004] In winding devices such as the winding device and unwinding device described above, the chucking pressure applied to the core held by the pair of left and right chuck members was determined by the pressure of the air cylinder that performed the chucking. However, this pressure was subject to mechanical loss and was different from the chucking pressure that was applied directly to the tapered cone, and there were also problems in that the chucking pressure could not be measured accurately if the left and right chucking members swung left and right during chucking.

[0005] SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a winding device that can directly and accurately measure the chucking pressure when chucking a winding core with a pair of left and right chuck members. [Means for solving the problem]

[0006] The present invention provides a winding device having a pair of left and right chuck members, one for chucking a cylindrical winding core for winding a web from both the left and right sides, wherein the left chuck member on the left side attached to the left mounting part has a left cylindrical portion that is movable left and right relative to the left mounting part and horizontally, a left rotating part that is rotatably housed in the left cylindrical portion, and a truncated conical left tapered cone provided at the right tip of the left rotating part; the right chuck member on the right side attached to the right mounting part has a right cylindrical portion that is movable left and right relative to the right mounting part and horizontally, a right rotating part that is rotatably housed in the right cylindrical portion, and a truncated conical right tapered cone provided at the left tip of the right rotating part; the winding core is chucked between the left tapered cone and the right tapered cone; and a pressure gauge that measures the chucking pressure with which the left tapered cone presses the left rotating part is provided between the left rotating part and the left tapered cone. [Effects of the Invention]

[0007] According to the above embodiment, the chucking pressure for chucking the winding core can be measured directly and accurately by the pressure gauge provided between the left rotating part and the left tapered cone. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a partially cutaway rear view of a winding device showing an embodiment of the present invention. [Figure 2] FIG. 10 is a vertical cross-sectional view of the left frame and base as viewed from the right side with the web wound around the core. [Figure 3] FIG. 10 is an enlarged vertical cross-sectional view of the left cylinder portion, the left rotating portion, the pressing portion, the left tapered cone, and the winding core. [Figure 4] FIG. 10 is a right vertical cross-sectional view of the left cylindrical portion, the pressing portion, the left tapered cone, and the pressure gauge as viewed from the right side. [Figure 5]FIG. 10 is an enlarged front view of the left cylindrical portion and the left rotating portion with the left tapered cone for work attached. [Figure 6] FIG. 10 is an overall view of a winding device according to a first modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] A winding device according to one embodiment of the present invention will be described. In this embodiment, a winding device 10 is used as the winding device and will be described with reference to Figs. 1 to 5. The winding device 10 of this embodiment winds a long web W around a cylindrical winding core 1. The web W may be, for example, a film, a metal foil, paper, or a fabric.

[0010] (1) Overall structure of the winding device 10 The overall structure of the winding device 10 will be described with reference to Figures 1 and 2. In this specification, the web W is transported in the front-rear direction from rear to front, and the left-right direction is the direction when viewed from rear to front.

[0011] A pair of left and right frames 14 and 16, each made of a thick metal plate, are erected vertically and facing each other on a base 12 placed on a horizontal floor. A metal plate mounting member 18 is installed horizontally and in the left-right direction between the upper ends of the left and right frames 14 and 16. A left chuck member 20 is provided on the left frame 14, and a right chuck member 22 is provided on the right frame 16.

[0012] (2) Left chuck member 20 Next, the left chuck member 20 provided on the left frame (left mounting member) 14 will be described with reference to FIGS.

[0013] A circular left support hole 24 opens in approximately the center of the left frame 14 in the up-down direction, and a cylindrical left support part 26 penetrates the inner periphery of this left support hole 24 horizontally in the left-right direction. A left flange part 27 protrudes from the outer periphery of the cylindrical left support part 26, and this left flange part 27 is fixed to the left surface of the left frame 14 at the edge of the left support hole 24. A left protrusion 28 protrudes inward from the lower part of the inner periphery of the left support part 26.

[0014] A cylindrical left cylinder portion 30 is further housed within the cylindrical left support portion 26. The left cylinder portion 30 is also housed horizontally in the left-right direction and is movable left and right within the left support portion 26. A left groove 32 is carved in the left-right direction on the lower peripheral surface of the left cylinder portion 30, and the left protrusion 28 described above is engaged with this left groove 32. As a result, by sliding the left groove 32 relative to the fixed left protrusion 28, the left cylinder portion 30 can move left and right without rotating.

[0015] A cylindrical left rotating part 34 is housed inside the left cylindrical part 30. A bearing 36 is provided between the inner periphery of the left end of the left cylindrical part 30 and the outer periphery of the left end of the left rotating part 34, and a bearing 38 is provided between the inner periphery of the right end of the left cylindrical part 30 and the outer periphery of the right end of the left rotating part 34. This allows the left rotating part 34 to rotate freely with respect to the left cylindrical part 30, but prevents it from moving left and right.

[0016] A cylindrical left protruding portion 40 having a smaller diameter than the left rotating portion 34 protrudes from the right end of the left rotating portion 34. A cylindrical pressing portion 42 is attached to this left protruding portion 40. That is, a circular recess 44 is provided on the left surface of the pressing portion 42, and the left protruding portion 40 is fitted into this recess 44 and fixed. A truncated cone-shaped left tapered cone 46 is provided on the right side of the pressing portion 42, spaced a predetermined distance apart. Four sliding holes 48 penetrate the left tapered cone 46 in the axial direction. Bolts 50 having an outer diameter slightly smaller than the inner diameter of the sliding holes 48 are fitted into these four sliding holes 48. The bolt heads at the right ends of the bolts 50 protrude from the right surface of the left tapered cone 46, and the male threads at the left ends of the bolts 50 are threaded into the pressing portion 42. As a result, the left tapered cone 46 is spaced a predetermined distance from the pressing portion 42, and since the outer diameter of the bolt 50 is smaller than the inner diameter of the slide hole 48, the left tapered cone 46 is movable left and right.

[0017] A pressure gauge 52 consisting of a disk-shaped diaphragm-type load cell is provided on the right surface of the pressing part 42, between it and the left tapered cone 46. This pressure gauge 52 can measure pressure on the circular surface of the disk. Therefore, the force (chucking pressure) pressing the pressure gauge 52 when the left tapered cone 46 moves leftward can be measured.

[0018] An inclination angle measuring device 54 is provided on the top of the cylindrical pressing portion 42. This inclination angle measuring device 54 can measure the inclination angle of the left cylinder portion 30 and the left rotating portion 34 relative to the horizontal.

[0019] A left air cylinder 56 is provided on the left frame 14, which is positioned above the left support part 26. A left cylinder body 58 of this left air cylinder 56 is fixed to the left frame 14, and a left piston rod can extend and retract in the left-right direction and horizontally from the left cylinder body 58. The upper part of a left connecting member 62 is attached to the tip of a left piston rod 60, and the lower part of the left connecting member 62 is attached to the left end of the left cylindrical part 30. As a result, when the left air cylinder 56 extends and retracts the left piston rod 60, the left cylindrical part 30 and the left rotating part 34 inside the left cylindrical part 30 move left and right together.

[0020] (3) Right chuck member 22 Next, the structure of the right chuck member 22 provided on the right frame (right mounting member) 16 will be described with reference to FIG.

[0021] A circular right support hole 64 opens in the vertical center of the right frame 16, and a cylindrical right support part 66 penetrates the inner periphery of this right support hole 64 horizontally in the left-right direction. The position of the right support part 66 is symmetrical to the left support part 26. A right flange part 67 protrudes from the outer periphery of the cylindrical right support part 66, and this right flange part 67 is fixed to the right surface of the right frame 16 at the edge of the right support hole 64. A right protrusion 68 protrudes from the lower part of the inner periphery of the right support part 66.

[0022] A cylindrical right cylindrical portion 70 is further housed within the inner periphery of the cylindrical right support portion 66. A right groove 72 is carved in the left-right direction at the bottom of the outer periphery of the right cylindrical portion 70, and the right protrusion 68 described above is engaged with the right groove 72. As a result, by sliding the right groove 72 relative to the fixed right protrusion 68, the right cylindrical portion 70 can move left-right without rotating.

[0023] A cylindrical right-handed rotating part 74 is housed inside the right cylindrical part 70. A bearing 76 is provided between the inner periphery of the left end of the right cylindrical part 70 and the outer periphery of the left end of the right-handed rotating part 74, and a bearing 78 is provided between the inner periphery of the right end of the right cylindrical part 70 and the outer periphery of the right end of the right-handed rotating part 74. This allows the right-handed rotating part 74 to rotate freely relative to the right cylindrical part 70, but prevents it from moving left or right. The left chuck member 20 and the right chuck member 22 are attached to the left frame 14 and the right frame 16 so that the rotation axis of the left rotating part 34 and the rotation axis of the right-handed rotating part 74 are aligned in a horizontal position.

[0024] A cylindrical right protrusion 80 protrudes from the left end of the right rotating portion 74. A truncated right tapered cone 86 is attached to this right protrusion 80.

[0025] A rotary shaft 88 protrudes horizontally in the left-right direction from the right end of the right rotating unit 74. A sprocket 90 is attached to the right end of this rotary shaft 88. A motor 92 is provided on the right side of the top surface of the base 12, and a reducer 94 is attached to the rotary shaft of the motor 92. A sprocket 98 is attached to the end of an output shaft 96 protruding from the reducer 94. An endless belt 82 is stretched between the sprocket 90 and the sprocket 98. As a result, when the motor 92 rotates, the sprocket 90 rotates via the belt 82, and the right rotating unit 74 rotates.

[0026] A right air cylinder 100 is provided above the right cylindrical portion 70. A right cylinder body 102 of the right air cylinder 100 is integrally connected to the upper part of the right cylindrical portion 70 via a right connecting member 104 and is supported by the right cylindrical portion 70. A right piston rod 106 protrudes telescopically from the left side of the right cylinder body 102. Meanwhile, a jack 108 is attached to the right support portion 66 fixed to the right frame 16. The right piston rod 106 is attached to the jack 108, and by rotating a handle 110 of the jack 108, the right piston rod 106, the right cylinder body 102, and the right cylindrical portion 70 move horizontally and leftward together. The jack 108 then moves the right cylindrical portion 70 leftward and rightward until the right tapered cone 86 reaches a chucking position near the right end of the winding core 1. When the right tapered cone 86 chucks the cylindrical winding core 1 from this chucking position, the right air cylinder 100 is operated. In this case, with the left end of the right piston rod 106 fixed by the jack 108, the right cylinder body 102 is moved by air pressure, which moves the right cylindrical portion 70, allowing the right tapered cone 86 to chuck the left end of the winding core 1.

[0027] (4) Measurement operation state of the winding device 10 Next, a description will be given of the measurement operation state in which the state of the winding device 10 is measured before the winding operation is performed. In this measurement operation state, the chucking pressure with which the winding core 1 is chucked (sandwiched) by the pair of left and right chuck members 20 and 22, and the tilt state of the left rotating part 34 when the winding core 1 is chucked, are measured.

[0028] First, an empty core 1 for winding the web W is placed horizontally in the left-right direction on a core support base (not shown). As a result, the empty core 1 is disposed between the pair of left and right tapered cones 46 and 86.

[0029] Next, the operator rotates the handle 110 of the jack 108 to move the right cylinder body 102, the right connecting member 104, the right cylindrical portion 70, and the right rotating portion 74 leftward, and moves the right tapered cone 86 to a chucking position for chucking the winding core 1. In this case, what is characteristic is that the left end of the right piston rod 106 is fixed to the jack 108, and when the operator rotates the handle 110, the right piston rod 106 moves leftward, which moves the right cylinder body 102 and, based on this, moves the right rotating portion 74.

[0030] Next, the pair of left and right air cylinders 56 and 100 are operated simultaneously, and the pair of left and right tapered cones 46 and 86 chuck both left and right ends of the core 1. At this time, the left air cylinder 56 operates, and the left tapered cone 46 moves in the direction in which the left piston rod 60 contracts (to the right), causing the left cylindrical portion 30, the left rotating portion 34, and the left tapered cone 46 to move to the right. Furthermore, when the right air cylinder 100 operates, the left end of the right piston rod 106 is fixed by the jack 108, and therefore the right cylinder body 102 moves leftward, unlike the left side, causing the right cylindrical portion 70, the right rotating portion 74, and the right tapered cone 86 to move leftward. When the right tapered cone 86 chucks the winding core 1, it is moved leftward by the right air cylinder 100, but in this state the air pressure of the right air cylinder 100 is set stronger than the air pressure of the left air cylinder 56 so that the winding core 1 does not move even when it is pressed rightward from the left side to chuck it. In particular, when chucking, the left end of the right piston rod 106 is fixed by the jack 108 and the right cylinder body 102 is in a moved state, so when chucking, the winding core 1 is less likely to swing left and right by the amount of the thrust of the right cylinder body 102.

[0031] Next, when the winding core 1 is chucked, a pressing force is applied to the left tapered cone 46 from the left end of the winding core 1, causing the left tapered cone 46 to move leftward and press against the pressure gauge 52. As a result, the pressure gauge 52 can directly measure the pressing force (chucking pressure) of the winding core 1. The left tapered cone 46 is able to move freely left and right because the slide hole 48 formed in the left tapered cone 46 has a larger inner diameter than the bolt 50. If this chucking pressure is a preset chucking pressure, the winding operation can proceed as is. However, if it is outside the set range, the air pressure supplied to the left air cylinder 56 is adjusted to adjust the chucking pressure.

[0032] Next, with the winding core 1 chucked between the pair of left and right tapered cones 46 and 86, the tilt angle measuring device 54 is used to check the tilt state of the pressing portion 42, i.e., the left cylindrical portion 30. If the measured tilt angle is horizontal, winding work can be carried out as is. On the other hand, if the left cylindrical portion 30 is tilted, the assembly of the left frame 14, right frame 16 and other components of the winding device 10 and the fit of the machined shafts, bosses, etc. are checked again to ensure there are no gaps or rattles.

[0033] As described above, the chucking pressure acting on the left tapered cone 46 is measured directly, rather than indirectly using the left air cylinder 56, so that the pure chucking pressure can be measured with mechanical loss and the like removed.

[0034] (5) Operating state of the winding operation of the winding device 10 Next, the operating state of the winding operation in which the web W is wound around the core 1 by the winding device 10 will be described.

[0035] First, the left tapered cone 46 and the pressing portion 42 used in the above measurement are removed from the left protruding portion 40.

[0036] Next, after removing the left tapered cone 46, a left tapered cone 146 for work is fitted into the left protruding part 40. This left tapered cone 146 for work is also frustum-shaped, and a recess 148 with a circular opening is provided on its left surface. Then, the left protruding part 40 is fitted into this recess 148, and the left tapered cone 146 for work is fixed to the left rotating part 34.

[0037] Next, the empty winding core 1 onto which the web W is wound is chucked from both the left and right sides by the pair of left and right chuck members 20 and 22. At this time, as in the measurement operation, the right cylindrical portion 70 is moved to the chucking position by the jack 108, and then the pair of left and right air cylinders 56 and 100 is used to chuck the winding core 1 with the working left tapered cone 146 and right tapered cone 86.

[0038] Next, the motor 92 is rotated, which rotates the right rotating part 74, which in turn rotates the winding core 1 and the left rotating part 34. Then, the web W being conveyed is wound onto the winding core 1.

[0039] (6) Effects According to the above embodiment, when the winding core 1 is chucked by the left tapered cone 46 and the right tapered cone 86, the left tapered cone 46 moves in the left direction due to pressure from the left end of the winding core 1 and presses the pressure gauge 52, thereby making it possible to directly measure the chucking pressure. Then, the air pressure of the left air cylinder 56 can be adjusted by this chucking pressure, and can be accurately adjusted to a predetermined chucking pressure.

[0040] Furthermore, when the winding core 1 is chucked between the left tapered cone 46 and the right tapered cone 86, the tilt angle measuring device 54 can measure whether the left rotating part 34, i.e., the winding core 1, is horizontal, and if it is not horizontal, the assembly of the entire winding device 10 can be checked to make it horizontal.

[0041] Furthermore, the right air cylinder 100 can be moved left and right by a jack 108 fixed to the right piston rod 106, and based on this, the right cylindrical portion 70 can be moved to a chucking position for chucking. When chucking the winding core 1, it is not the right piston rod 106 fixed to the jack 108 that moves, but the right cylinder body 102 that moves in response to the extension and contraction of the right piston rod 106. This allows accurate movement to the chucking position, and since the left end of the right piston rod 106 is fixed by the jack 108 and the right cylinder body 102 is in a moved state when chucking, the right cylinder body 102 has a greater thrust than the left air cylinder 56 when chucking, making it difficult for the winding core 1 to swing left and right, and allowing accurate measurement of the chucking pressure. Modified Example

[0042] Next, a modification of the above embodiment will be described.

[0043] (1) Change example 1 In the above embodiment, a winding device 10 in which only one winding core 1 is attached has been described, but instead, the above embodiment may be applied to a turret-type winding device 200 in which two winding cores 1 are attached, as shown in FIG. 6.

[0044] 6, the turret-type winding device 200 has a pair of left and right support legs 204 standing upright from a base 202. A main rotation shaft 206 is horizontally suspended between the pair of left and right support legs 204 so as to be rotatable.

[0045] A pair of left and right first arms (first attachment portions) 208 protrude from the main rotary shaft 206. A left chuck member 20 is provided on the left first arm 208, and a right chuck member 22 is provided on the right first arm 208. The first winding core 1 is chucked between the left chuck member 20 and the right chuck member 22.

[0046] Another pair of left and right second arms (second attachment portions) 210 protrudes at a position 180° away from the pair of left and right first arms 208 around the main rotation shaft 206. A left chuck member 20 is provided on the left second arm 210, and a right chuck member 22 is provided on the right second arm 210. A second winding core 1 is chucked between the left chuck member 20 and the right chuck member 22.

[0047] Two pairs of left and right auxiliary arms 212 protrude from the main rotation shaft 206 at positions 90° apart between a pair of left and right first arm 208 and second arm 210, and guide rollers 214 are rotatably attached to the pair of left and right auxiliary arms 212.

[0048] The web W passes through a guide roller 214 and is wound onto the first winding core 1. Then, when the first winding core 1 is full, the main rotary shaft 206 rotates clockwise in FIG. 6, and the web W is wound onto the empty second winding core 1.

[0049] In such a winding device 200, the chucking pressure and tilt angle may be measured before operation by attaching a left tapered cone 46 having a pressure gauge 52 and an inclination angle measuring device 54 to the left chuck member 20 provided on the first arm 208 and the second arm 210.

[0050] (2) Change example 2 In the above embodiment and modified example 1, the winding device has been described as the winding device 10, 200, but instead, a pressure gauge 52 and an inclination angle measuring device 54 may also be provided on the left chuck member 20 in an unwinding device that unwinds the web W from the winding core 1.

[0051] Also, in the unwinding device, a jack 108 may be provided on the right chuck member 22 to move the right cylinder body 102 of the right air cylinder 100.

[0052] (3) Change example 3 In the above embodiment, the jack 108 is operated by rotating the handle 110, but instead, it may be operated by manually moving a lever up and down or by a motor.

[0053] (4) Other Although one embodiment of the present invention has been described above, this embodiment is presented by way of example and is not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0054] 1 winding core, 10 winding device, 12 base, 14 left frame, 16 right frame, 20 left chuck member, 22 right chuck member, 30 left cylindrical portion, 34 left rotating portion, 42 pressing portion, 46 left tapered cone, 52 pressure gauge, 54 tilt angle measuring device, 56 left air cylinder, 70 right cylindrical portion, 74 right rotating portion, 86 right tapered cone, 92 motor, 100 right air cylinder, 102 right cylinder body, 106 right piston rod, 108 jack

Claims

1. A winding device having a pair of left and right chuck members, a left chuck member and a right chuck member, which chuck a cylindrical winding core for winding a web from both the left and right sides, The left chuck member attached to the left mounting part is a left cylinder portion that is movable left and right and horizontally relative to the left attachment portion; a left rotating portion rotatably housed in the left cylindrical portion; a left tapered cone having a truncated cone shape provided at a right tip of the left rotating part; and The right chuck member attached to the right mounting part is a right cylindrical portion that is movable left and right and horizontally relative to the right mounting portion; a right rotating portion rotatably housed in the right cylindrical portion; a right tapered cone having a truncated cone shape provided at a left tip of the right rotating part; and The winding core is chucked between the left tapered cone and the right tapered cone, a pressure gauge for measuring a chucking pressure with which the left tapered cone presses the left rotating part is provided between the left rotating part and the left tapered cone; A winding device characterized by:

2. a cylindrical left protruding portion protruding from the right end of the left rotating portion; a pressing portion fitted into the left protruding portion; the left tapered cone is attached to the pressing portion so as to be movable in the left-right direction, a load cell serving as the pressure gauge is provided between the pressing portion and the left tapered cone; The winding device according to claim 1 .

3. A tilt angle measuring device is provided on the upper part of the pressing part. The winding device according to claim 2 .

4. A motor that rotates the right rotating unit is connected to the right rotating unit. The winding device according to claim 1 .

5. a left cylinder body of a left air cylinder is provided on the left mounting portion, the left cylinder portion is attached to a left piston rod that protrudes leftward from the left cylinder body and expands and contracts in the left-right direction; the left air cylinder moves the left cylindrical portion rightward, and the left end of the winding core is chucked by the left tapered cone; The winding device according to claim 1 .

6. a right cylinder body of a right air cylinder is provided in the right cylindrical portion, a right piston rod that protrudes leftward from the right cylinder body and extends and contracts in the left-right direction; A jack is provided on the right mounting portion, the right piston rod is attached to the jack; The right piston rod, the right cylinder body, and the right cylindrical portion are moved together in the left-right direction to a chucking position by the jack; With the right piston rod fixed to the jack, the right cylinder body is moved by air pressure, thereby moving the right cylindrical portion leftward from the chucking position and chucking the right end portion of the winding core with the right tapered cone. The winding device according to claim 1 .

7. The winding device winds the web around the empty winding core. The winding device according to claim 1 .

8. The winding device unwinds the web from the winding core on which the web is wound. The winding device according to claim 1 .

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