JP3648234B2 - Winding paper support device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a web support device for a paper feed section of a rotary press. Specifically, the winding paper of the paper feeding unit is configured to support both sides in the axial direction of the core tube of the winding paper so as to be rotatable and rotationally braked in an integrated state by a contact force between the support member and the core tube by opposing support members. The present invention relates to a support device.
[0002]
[Prior art]
Conventionally, as a web support device for supporting a web of a paper feed unit of a rotary press in contact with both sides of the core tube, a device disclosed in Japanese Patent Laid-Open No. 6-115786 (prior art 1) and Japanese Patent Publication No. 6 The device disclosed in JP-74104 (Prior Art 2) is known.
[0003]
Prior art 1 includes a rolling center provided at the distal ends of a plurality of pairs of opposing arms provided on a rotating shaft of a paper feed unit, and rotatably supporting both sides in the axial direction of a core tube of a web. A means for detecting rotation, a means for detecting the travel of the web being pulled out, a means for comparing the signals from the two detection means, a means for determining the presence or absence of slippage between the roll base paper and the rolling center, A means for driving and controlling the pressing of the rolling center based on the result is provided.
[0004]
As a control, a signal that detects the rotation of the rolling center and a signal that detects the running of the roll-shaped base paper are used as a comparison operator, and the slip between the rolling center and the roll-shaped base paper is detected. It increases the tightening force (contact force) on the web and prevents slipping.
[0005]
Prior art 2 is provided in the casing, which holds the core tube of the web from both sides, a pair of rotatable shaft end holders, a casing that holds one of the coaxial end holders so as to be able to move forward and backward. A pinion meshing with the rack, a worm wheel provided on the pinion, an air motor having a worm meshing with the worm wheel on the output shaft, a pressure air supply line on the pressure air supply side, and a pressure air supply side A first pressure reducing valve provided in the pressure air supply line, a shaft end holder forward air supply line and a shaft end holder backward air supply line on the air motor side, and the shaft end holder forward and backward advancement. A first three-way valve for connecting a pressure air supply line; a second three-way valve provided in the middle of the shaft end holder forward pressure air supply line; and the first three-way valve from the second three-way valve. And the first A bypass air line that bypasses the pressure reducing valve and is connected to the pressure air supply line on the pressure air supply source side, and a set pressure that is set lower than the set pressure of the first pressure reducing valve. And a forward / backward drive device for the shaft end holder, which includes two pressure reducing valves, and a braking device for braking the other of the coaxial end holders.
[0006]
In Prior Art 2, when the web is mounted, the air at the set pressure by the first pressure reducing valve is supplied to the air motor to increase the contact force between the web and the shaft end holder. The second three-way valve is switched and air having a set pressure by the second pressure reducing valve is supplied to the air motor to weaken the contact force between the web and the shaft end holder.
[0007]
[Problems to be solved by the present invention]
The apparatus disclosed in Prior Art 1 compares the rotation detection signal of the rolling center and the running speed detection signal of the roll base paper at all speeds, and determines whether or not there is a slip to control the pressing drive of the rolling center. Since the operation of increasing the contact force so as to eliminate the slip of the rolling center after the occurrence of the slip occurs, wear has occurred on the mutual contact surfaces of both the core tube of the roll-shaped base paper and the rolling center. For example, when a roll base paper is pulled out at a high speed and suddenly stops, there is a large time delay from the occurrence of the slip until the slip is eliminated. As a result, the core of the roll base paper Wear occurred on the mutual contact surfaces of both the tube and the rolling center.
[0008]
In Prior Art 2, the force with which the shaft end holder presses both sides of the core tube of the web during operation is performed with a smaller force than when the web is loaded. The pressing force does not change under any circumstances such as operation, sudden stop, and difference in the web diameter.
[0009]
Therefore, the contact force between the core tube of the web and the shaft end holder during the operation of the rotary press is between the core tube that tries to rotate by inertia force during a sudden stop and the shaft end holder that tries to stop after deceleration by braking. When the force is smaller than the large force acting on the sleeve, a slip in the rotational direction occurs between the core tube and the holder during a sudden stop, resulting in wear of these contact portions. If the contact force between the core tube of the web and the shaft end holder during operation of the rotary press is greater than the large force acting between the core tube and the shaft end holder during a sudden stop, the core tube and the shaft end Since a large force acts between the holders, a large load is always applied to the bearing portion that rotatably supports the core tube, shortening its life, resulting in poor durability of the web support device. .
[0010]
The present invention solves the above-mentioned problems of the prior art at once. That is, according to the present invention, the contact force of the supporting member with respect to the core tube of the web when supporting the web is set to a contact force that is sufficiently larger than the contact force during normal operation from rotation to normal stop and the contact force during normal operation. By switching to the contact force at the time of stopping, not only during normal operation, but also at the time of sudden stop, both the core tube of the web and the support member that supports this prevent wear in the rotational direction of the mutual contact portions, An object of the present invention is to prevent a large load from constantly acting on a bearing portion that rotatably supports a support member, and to improve the durability of the web support device.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the web can be supported and rotated and rotationally braked integrally with the web, and in the case of normal stop during normal operation, the web is rotated after a predetermined rotational braking time. In the case of an emergency stop in an emergency, in the web support device of the rotary press set to stop the rotation of the web with a rotation braking time shorter than the rotation braking time determined at the time of normal stop,
A pair of support means capable of supporting both ends of the core tube of the web,
Pressure is applied to at least one support means so as to be able to reciprocate in the direction of the other opposing support means and to reduce the distance between the pair of support means, and the distance between the pair of support means is reduced. Pressure switching application means capable of selectively switching at least two pressures for moving the direction, and reducing the interval between the pair of support means when the rotary press is stopped suddenly. Proposed is a web support device characterized in that the contact force between the support means and the core tube of the web can be increased by switching and increasing the pressure for moving the direction and applying it to the support means. .
[0012]
Furthermore, while supporting the web, it can be rotated and rotationally braked integrally with the web, and in the case of a normal stop during normal operation, the rotation of the web is stopped after a predetermined rotational braking time. In the case of a sudden stop, in the web support device of the rotary press set so that the rotation of the web is stopped by a rotation braking time shorter than the rotation braking time determined at the time of normal stop,
A pair of support means having a pair of support members capable of supporting both ends of the core tube of the winding paper;
Moving positioning means for positioning by moving at least one supporting member toward the other supporting member;
Braking means capable of braking the rotation of the support member;
At least one support member is reciprocally moved in the direction of the other opposing support member, and pressure is applied to move in a direction that reduces the interval between the pair of support members, and the interval between the pair of support members is reduced. Pressing means having pressure switching application means capable of selectively switching at least two of the pressures for moving the direction selectively, and
At least one support member has a contact member provided in each of the plurality of gradient grooves so as to be able to reciprocate, and the outer periphery of the contact member due to the movement of each contact member caused by a change in pressure applied to the support member A support member in which the contact force between the surface and the inner peripheral surface of the core tube of the web is changed,
In the case of a sudden stop of the rotary press, the contact force between the support means and the core tube of the web is provided by switching and increasing the pressure that causes the movement in the direction to reduce the distance between the pair of support means. A web support device characterized in that it can be enlarged is proposed.
[0013]
Further, the pressure switching applying means described in the 0011 column and the 0012 column has a fluid pressure setting means capable of changing at least a small pressure setting among two large and small pressures applied to at least one supporting means. A web support device is proposed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of an entire paper feed unit provided with a web support device according to the present invention. FIG. 2 is a sectional view taken along line XX of FIG. FIG. 3 shows a partial cross section of the web support device shown in FIG. 2, an enlarged partial cross sectional view showing a state of the first support means having one support member before the web is installed, and FIG. 4 shows FIG. FIG. 5 is an enlarged partial cross-sectional view showing a partial cross-section of the web support device, showing a state after the web is mounted on the first support means having one support member, and FIG. 5 is a partial cross-section of the web support device shown in FIG. FIG. 6 is an enlarged partial cross-sectional view showing a state of the second support means having the other support member before the web is mounted, and FIG. 6 is a partial cross-section of the web support device shown in FIG. 2 and has the other support member. FIG. 7 is an enlarged partial cross-sectional view showing a state after the winding paper is mounted on the second support means. Is a diagram showing the tip front, Y arrow view of FIG. 3 and FIG.
[0015]
1 and 2 show a paper feed unit provided with a web support device S according to one embodiment of the present invention. In the sheet feeding unit, an arm rotation shaft H is supported between frames T and T facing each other with a space therebetween, and a rotation driving means (not shown) is connected to the arm rotation shaft H. The arm rotation shaft H is provided with a pair of first arm J1 and second arm J2 facing each other, and both the first arm J1 and the second arm J2 can move in the axial direction of the arm rotation shaft H. The interval can be adjusted according to the width of the two webs R1 and R2 mounted between the first arm J1 and the second arm J2. In FIG. 1, W is a running web paper, and L is a web transport device.
[0016]
The web support device S according to one embodiment of the present invention includes a first support means A for supporting the paper roll R1 provided in the vicinity of the leading ends of both sides of the first arm J1, a moving positioning means B, The brake means C and the second support means D for supporting the web R1 provided near the leading ends of both sides of the second arm J2 and the pressing means E connected to the respective second support means D are provided. is doing.
[0017]
In FIG. 2, the upper web R1 shows a state before being mounted on the web support S, and the lower web R2 shows a state in which the web R2 is mounted on the web support S and during normal operation.
[0018]
In the paper feed unit, the web paper W drawn from the web R2 mounted on the web support device S is run while the running tension is adjusted and controlled, and after being printed in the printing unit (not shown), the folding unit It is cut by (not shown) and folded into a printed matter.
[0019]
Next, the first support means A of the web support device S of the present invention will be described. As shown in FIG. 2, FIG. 3 and FIG. 4, the first support means A is provided in the vicinity of the front ends on both sides of the first arm J1, and the second support device is provided in the vicinity of the front ends on both sides of the second arm J2. It is provided at a position facing the support means D.
[0020]
As shown in FIGS. 3 and 4, the first support means A includes a first support member 1 and a first sleeve 2, and the first support member 1 and the first sleeve 2 have a first support member 1 and a first sleeve 2. A first bearing 20 that rotatably supports the first support member 1 with respect to one sleeve 2 is provided.
[0021]
The first support member 1 includes a first rotating shaft 10, a first stopper 11, a first contact member 12, a first spring receiver 13, a first compression spring 14, a first flange portion 15, and a first insertion portion 16. ing.
[0022]
The first sleeve 2 is fitted so as to be movable in the axial direction of the arm rotation axis H in a first hole 21 provided in the vicinity of the distal end portion of the first arm J1 in parallel with the axis of the arm rotation axis H. Is provided. The first sleeve 2 is provided so as not to rotate with respect to the first hole 21 by a first key member 22 provided between the first sleeve 2 and the inner wall of the first hole 21. The first sleeve 2 is attached so as to be moved in the axial direction of the arm rotation axis H by the movement positioning means B with the first support member 1.
[0023]
In the first support member 1, a substantially central portion of the first rotating shaft 10 is rotatably supported by the inner wall of the first sleeve 2 via the first bearing 20. Both ends of the first rotating shaft 10 of the first support member 1 protrude from the first sleeve 2. The first rotating shaft 10 is provided with a first flange portion 15 in the vicinity of the end surface of the first sleeve 2 that protrudes from the first sleeve 2 to the side where the web R is located. A cylindrical first insertion portion 16 that protrudes in the direction of the side where R is located is formed.
[0024]
A thin truncated cone-shaped first stopper 11 is attached to the distal end of the first insertion portion 16 so that the outer diameter on the distal end side is reduced so that it can be easily inserted into the core tube K of the web R. Further, as shown in FIGS. 3, 4 and 7, the first insertion portion 16 has a first gradient groove 160 at a plurality of locations on its outer peripheral surface, in this embodiment, at four locations with a 90-degree angle interval. Is formed. Each first gradient groove 160 is formed as a groove having a slope that gradually decreases in the radial direction from the tip toward the first flange portion 15 side. Each of the first gradient grooves 160 is formed as a slit-like slit groove 160a on the groove surface side, and a groove 160b that is wider than the slit groove 160a on the groove bottom surface side is formed continuously with the slit groove 160a. Do it.
[0025]
The first contact member 12 is engaged with each first gradient groove 160 so as to be movable in the groove direction of the first gradient groove 160, and the slit groove 160 a on the groove surface side is provided with the first contact member 12. The upper portion (surface side) 12a is engaged, and the dovetail groove 160b on the groove bottom surface side is the base portion (center side) of the first contact member 12 formed in a cross-sectional shape corresponding to the groove shape of the dovetail groove 160b. The dovetail portion 12b is engaged. The first contact member 12 can reciprocate along the first gradient groove 160 while preventing the first contact member 12 from dropping from the first gradient groove 160 by the engagement of the dovetail portion 12b and the dovetail groove 160b.
[0026]
Each first contact member 12 includes a rising portion 120 formed on the first flange portion 15 side and a base 121 formed on the first stopper 11 side, and has a step. Although the distance from the center line of the 1st insertion part 16 changes with the reciprocating movement along the 1st gradient groove | channel 160, the 1st contact member 12 has protruded from the slit groove | channel 160a in any position. The base 121 can be projected and retracted from the slit groove 160a. That is, the base 121 protrudes from the cylindrical surface of the first insertion portion 16 as the first contact member 12 moves toward the first flange portion 15, and conversely sinks into the slit groove 160 a as it moves toward the first stopper 11. To do.
[0027]
Therefore, when the first insertion portion 16 is inserted into the core tube K of the web, and the first contact member 12 is pushed toward the first flange portion 15 by the end surface of the core tube K, the base 121 of the first contact member 12 is moved. The outer peripheral surface protrudes from the first gradient groove 160 and contacts the inner peripheral surface of the core tube K. The contact force between the outer peripheral surface of the base 121 and the inner peripheral surface of the core tube K increases as the first contact member 12 approaches the first flange portion 15 side.
[0028]
The outer peripheral surface of the base 121 of the first contact member 12 is formed with at least one of appropriate surface treatment or shape that increases the frictional force. Each first contact member 12 is in a state of no load between the first spring receiver 13 and the first flange portion 15 fixed to the side surface of the rising portion 120 of the first contact member 12 on the first flange portion 15 side. Due to the action of the provided first compression spring 14, it is pressed against the first stopper 11. In this state, the base 121 of each first contact member 12 is submerged in the slit groove 160 a. .
[0029]
On the other end side of the first rotating shaft 10 that protrudes from the first sleeve 2 to the opposite side of the first contact member 12, a rear shaft portion 100 that is connected to the braking means C is provided.
[0030]
Next, the movement positioning means B of the web support device S of the present invention will be described. As shown in FIGS. 3 and 4, the moving positioning means B includes a rack 30 provided on the first sleeve 2 of the first support means A, a pinion 31, and a motor 32 attached to the first arm J1. Composed.
[0031]
The rack 30 is in a state of being formed on the peripheral surface of the first sleeve 2 in parallel with the axis of the first sleeve 2 and fixed to the first sleeve 2. The pinion 31 is positioned on the inner surface of the first hole 21 so as to mesh with the rack 30 in a rotatable manner, and is attached to the first arm J1. An output shaft of a motor 32 that rotationally drives the pinion 31 is connected to the pinion rotation shaft 310 of the pinion 31 via a speed reduction mechanism.
[0032]
That is, the pinion rotating shaft 310 connected to the output shaft of the motor 32 through the speed reduction mechanism is rotated by the rotational drive of the motor 32. The rotation of the pinion rotating shaft 310 causes the pinion 31 to move the first sleeve 2 in the axial direction via the racks 30 that mesh with each other. By the movement of the first sleeve 2 in the axial direction, the first rotation shaft 10 of the first support member 1 supported by the first sleeve 2 via the first bearing 20 moves. The first support member 1 that moves according to the movement of the first rotation shaft 10 is movable between a support position that supports the web R and a standby position that does not support the web R.
[0033]
The movement positioning means B may not be provided on the first arm J1 where the first support means A is located. In this case, the first support member 1 of the first support means A is fixedly provided at a support position for supporting the web R, and the web R is pushed toward the first support A by the second support D. The first contact member 12 of the first support member 1 comes into contact with the core tube K of the web R and is pressed.
[0034]
Next, the braking means C of the web support device S of the present invention will be described. As shown in FIGS. 3 and 4, the braking means C is provided on the opposite side of the position of the first contact member 12 with respect to the first sleeve 2 at an intermediate position. A rotating sleeve 42 attached to the first arm J1, a rotating disc 43 attached to the outer periphery of the rotating sleeve 42 and rotatable integrally with the rotating sleeve 42, and being pressed against the rotating disc 43 to rotate the rotating disc 43. And a brake pad 44 that can be braked.
[0035]
The rotating sleeve 42 of the braking means C is provided so as to be fitted to the rear shaft portion 100 connected to the first rotating shaft 10 that protrudes from the first sleeve 2 to the opposite side of the first contact member 12, and rotates. The key member 101 provided between the sleeve 42 and the rear shaft portion 100 allows the rear shaft portion 100 to move only in the axial direction of the rotating sleeve 42, and the rotating sleeve 42 is connected to the first support member 1. The rotating shaft 10 is provided so as to be rotatable with respect to the bracket 41 via the braking portion bearing 40 having the same central axis as the rotating shaft 10.
[0036]
In the braking means C, the rotation of the rear shaft portion 100 is braked via the rotating sleeve 42 by the brake pad 44 sandwiching the rotating disk 43 from both sides and contacting both surfaces to brake the rotation of the rotating disk 43. Further, the rotation of the first support member 1 is braked.
[0037]
Next, the 2nd support means D of the web support apparatus S of this invention is demonstrated. As shown in FIG. 2, the second support means D is provided in the vicinity of the front ends on both sides of the second arm J2, and is opposed to the first support means A provided in the vicinity of the front ends on both sides of the first arm J1. It is provided in the position to do.
[0038]
As shown in FIGS. 5 and 6, the second support means D includes the second support member 5 and the second sleeve 6, and the second support member 5 and the second sleeve 6 have a second gap between the second support member 5 and the second sleeve 6. A second bearing 60 that rotatably supports the second support member 5 with respect to the two sleeves 6 is provided.
[0039]
The second support member 5 includes a second rotating shaft 50, a second stopper 51, a second contact member 52, a second spring receiver 53, a second compression spring 54, a second flange portion 55, and a second insertion portion 56. ing.
[0040]
The second sleeve 6 is fitted so as to be movable in the axial direction of the arm rotation axis H in a second hole 61 provided in the vicinity of the distal end portion of the second arm J2 in parallel with the axis of the arm rotation axis H. Is provided. The second sleeve 6 is provided so as not to rotate with respect to the second hole 61 by a second key member 62 provided between the second sleeve 6 and the inner wall of the second hole 61. The second sleeve 6 is attached by the pressing means E so as to be moved in the axial direction of the arm rotation shaft H with the second support member 5.
[0041]
The second support member 5 is supported so that a part of the second rotation shaft 50 can rotate on the inner wall of the second sleeve 6 via the second bearing 60. One end side of the second support member 5 facing the first support member 1 of the second rotating shaft 50 protrudes from the second sleeve 6. The second rotating shaft 50 is provided with a second flange portion 55 in the vicinity of the end surface of the second sleeve 6 that protrudes from the second sleeve 6 to the side where the web R is located. The column-shaped 2nd insertion part 56 which protrudes in the direction of the side in which is located is formed.
[0042]
A thin truncated cone-shaped second stopper 51 having a small outer diameter on the front end side is attached to the distal end of the second insertion portion 56 so as to be easily inserted into the core tube K of the web R. Further, as shown in FIGS. 5, 6, and 7, the second insertion portion 56 has the second gradient grooves 560 at a plurality of locations on the outer peripheral surface, in this embodiment, at four locations with a 90-degree angle interval. Is formed. Each of the second gradient grooves 560 is formed as a groove having a slope that gradually decreases in the radial direction from the tip toward the second flange portion 55 side. Each of the second gradient grooves 560 is formed as a slit-shaped slit groove 560a on the groove surface side, and a dove groove 560b that is wider than the slit groove 560a on the groove bottom surface side is formed continuously to the slit groove 560a. Do it.
[0043]
The second contact member 52 is engaged with each second gradient groove 560 so as to be movable in the groove direction of the second gradient groove 560, and the slit groove 560 a on the groove surface side has the second contact member 52 of the second contact member 52. The upper portion (front surface side) 52a is engaged, and the dovetail groove 560b on the groove bottom surface side is the base portion (center side) of the second contact member 52 formed in a cross-sectional shape corresponding to the groove shape of the dovetail groove 560b. The provided portion 52b is engaged. The second contact member 52 can reciprocate along the second gradient groove 560 while preventing the second contact member 52 from falling off the second gradient groove 560 due to the engagement between the dovetail portion 52b and the dovetail groove 560b.
[0044]
Each second contact member 52 includes a rising portion 520 formed on the second flange portion 55 side and a base portion 521 formed on the second stopper 51 side, and has a step. Although the distance from the center line of the 2nd insertion part 56 changes with the reciprocating movement along the 2nd gradient groove | channel 560, the 2nd contact member 52 protrudes from the slit groove | channel 560a in any position. The base portion 521 can protrude and retract from the slit groove 560a. That is, the base portion 521 protrudes from the cylindrical surface of the second insertion portion 56 as the second contact member 52 moves toward the second flange portion 55, and sinks into the slit groove 560a as it moves toward the second stopper 51.
[0045]
For this reason, when the second insertion portion 56 is inserted into the core tube K of the web R and the second contact member 52 is pushed toward the second flange portion 55 by the end surface of the core tube K, the base 521 of the second contact member 52 is moved. Protrudes from the second gradient groove 560 and the outer peripheral surface is in contact with the inner peripheral surface of the core tube K. The contact force between the outer peripheral surface of the base portion 521 and the inner peripheral surface of the core tube K increases as the second contact member 52 approaches the second flange portion 55 side.
[0046]
The outer peripheral surface of the base 521 of the second contact member 52 is formed to have at least one of an appropriate surface treatment or shape that increases the frictional force. In the no-load state, each second contact member 52 is between the second spring receiver 53 and the second flange portion 55 fixed to the side surface of the rising portion 520 of the second contact member 52 on the second flange portion 55 side. The second compression spring 54 is provided so as to be pressed against the second stopper 51, and in this state, the base 521 of each second contact member 52 is submerged in the slit groove 560a. .
[0047]
On the opposite side of the second sleeve 6 from the second contact member 52, a pressing means E that can move the second sleeve 6 in the axial direction is provided.
[0048]
Next, the pressing means E of the web support device S of the present invention will be described. As shown in FIGS. 2, 5, and 6, the pressing means E includes a sleeve moving means 7, a roll paper attaching / detaching switching means 8, and a pressure switching applying means 9. The pressure switching application unit 9 includes a path switching unit 90, a first fluid pressure setting unit 91, and a second fluid pressure setting unit 92.
[0049]
The sleeve moving means 7 includes a piston 70 and a cylinder 71. The piston 70 is fixed to the end surface opposite to the second contact member 52 of the second sleeve 6, and hermetically contacts the inner wall of the cylinder 71 attached to the second arm J <b> 2 in the axial direction of the second sleeve 6. It is provided so that it can reciprocate. The cylinder 71 is provided with two airtight chambers 72 a and 72 b in the cylinder 71 with the piston 70 as a boundary. The two airtight chambers 72a and 72b are provided with connection ports 73a and 73b for supplying or discharging fluid pressure, respectively.
[0050]
The roll paper attachment / detachment switching means 8 has two fluid discharge ports 80 and 81, and two-to-four movable fluid movement paths 82, 83 and 84 and 85 are provided with an external instruction signal (a mounting signal N, which will be described later). For example, a fluid path switching device such as a 5-port 2-position electromagnetic switching valve that changes the fluid path by being moved by a separation signal Q), and a fluid source M that is a supply source of fluid pressure, It is provided in a fluid path connecting the two airtight chambers 72a and 72b.
[0051]
The winding paper attachment / detachment switching means 8 can support the winding paper R by the second support member 5, and can further move the winding paper R to the working position for pressing the web R toward the first support member 1 via the second support member 5. It is. When moving the web R toward the first support member 1 in the direction of the action position, the fluid from the fluid source M is supplied to the airtight chamber 72a via the web paper attachment / detachment switching means 8 and the path switching means 90. The winding paper attachment / detachment switching means 8 is changed to the fluid movement paths 82 and 83 by the attachment signal N, the fluid source M and the connection port 73a are connected by the fluid movement path 82, and the fluid in the airtight chamber 72b is moved by the moving piston 70. The connection port 73b is connected to the fluid discharge port 80 via a third fluid path 95 provided between the connection port 73b and the web paper attachment / detachment switching means 8 by the fluid movement path 83 whose path has been changed so as to be discharged. To do.
[0052]
When the second support member 5 is moved to a standby position where the web R is not supported and is not pressed, the release signal Q is used to supply the fluid from the fluid source M to the airtight chamber 72b via the web paper attachment / detachment switching means 8. The winding paper attachment / detachment switching means 8 is changed to the fluid movement paths 84 and 85 so that the fluid source M and the connection port 73b are connected by the fluid movement path 85, and the fluid in the airtight chamber 72a is discharged by the moving piston 70. The connection port 73a and the fluid discharge port 81 are connected to the path switching means 90 via the fluid movement path 84 whose path has been changed.
[0053]
The path switching means 90 constituting the pressure switching providing means 9 moves two fluid movement paths that are movable by an external instruction signal (a mounting signal N and a sudden stop signal P described later) to change the fluid path. For example, a fluid path switching device such as a 3-port 2-position electromagnetic switching valve. The path switching means 90 includes a first fluid path 93 provided as a fluid path connected to the fluid source M through the connection port 73a of the airtight chamber 72a of the cylinder 71 and the web paper attachment / detachment switching means 8, and the connection port 73a and the fluid source. M is provided between the second fluid passage 94 and another second fluid passage 94 provided as a fluid passage. The path switching means 90 includes two fluid paths of the fluid supplied from the fluid source M to the connection port 73a, that is, a first fluid path 93 that supplies the fluid from the fluid source M through the web paper attachment / detachment switching means 8 and the web paper. It has a switching action with the second fluid path 94 that does not pass through the attachment / detachment switching means 8.
[0054]
The first fluid pressure setting means 91 constituting the pressure switching applying means 9 is composed of, for example, a pressure adjusting valve provided between the web paper attachment / detachment switching means 8 and the fluid source M in the first fluid path 93, and the first fluid path The pressure used during normal operation is set at 93. This set pressure is between the core tube K of the web R, the first contact member 12, and the second contact member 52 during braking from deceleration to stop, which is performed over a relatively long time by the braking means C during normal stop. It is a pressure that can obtain a normal contact force that does not cause slippage.
[0055]
The second fluid pressure setting means 92 that constitutes the pressure switching application means 9 includes, for example, a pressure adjusting valve provided between the path switching means 90 and the fluid source M of the second fluid path 94, and the second fluid path 94. The pressure to be used at the time of sudden stop is set. This set pressure is a pressure larger than the pressure used during normal operation, and from the deceleration performed in a short time to the stop by the braking means C at the time of sudden stop corresponding to a sudden accident such as running out of web paper while the rotary press is operating. At the time of braking, it is possible to obtain a contact force at the time of a sudden stop sufficiently larger than the normal contact force that does not cause a slip between the core tube K of the web R, the first contact member 12, and the second contact member 52. It is the pressure that can be done.
[0056]
Next, operations and effects in the embodiment of the present invention will be described. The web R to be loaded is placed on the web transport device L and carried into the web support device S. The interval between the first arm J1 and the second arm J2 shown in FIG. 2 is made to wait in advance with an interval larger than the width dimension of the web R. The web R has a center line of the core tube K between the first arm J1 and the second arm J2, and the first support member 1 and the first support member 1 of the first support means A provided at the tip of the first arm J1. The second arm J2 moves to a position substantially coincident with the common axis of the second support member 5 of the second support means D provided at the tip of the two arms J2 and stops. This stop position is confirmed by a detector (not shown).
[0057]
Next, a mounting signal N is output from a web paper attachment / detachment control unit (not shown) automatically or manually. The transmitted mounting signal N is received by the motor 32 of the moving positioning means B for the first support means A, and is received by the roll paper attaching / detaching switching means 8 and the path switching means 90 for the second support means D. By sending and receiving the mounting signal N, the first support means A and the second support means D begin to move toward the operating position almost simultaneously, and the operation of supporting the web R is started.
[0058]
Next, the operation of the first support means A when the mounting signal N is transmitted will be described. The rack which meshes with the pinion 31 by rotating the pinion 31 attached to the pinion rotating shaft 310 connected to the output shaft of the motor 32 through the speed reduction mechanism by the operation of the motor 32 receiving the mounting signal N. The first support member 1 moves in the direction of the web R through the first sleeve 2 and the first sleeve 2 to which the rack 30 and the rack 30 are attached.
[0059]
By this movement, the first support member 1 is stopped at a predetermined support position for supporting the web R, and is positioned by the speed reduction mechanism. That is, as the first support member 1 moves toward the web R, the first insertion portion 16 and the base 121 of the first contact member 12 are sequentially moved from the one end of the core tube K of the web R into the tube. Inserted into. Then, the side surface on the step side of the rising portion 120 of each first contact member 12 is in contact with the end surface of the core tube K, and each first contact member 12 is further pushed by the end surface of the core tube K as it is. The first compression spring 14 moves against the spring force along the first gradient groove 160 of the first insertion portion 16 toward the first flange portion 15. With this movement, each first contact member 12 moves away from the center line of the first insertion portion 16, and the base 121 of the first contact member 12 protrudes from the slit groove 160a. And the outer peripheral surface of each base 121 contacts the inner peripheral surface of the core tube K of the web R. The movement of the first support member 1 in the direction of the web R stops at a predetermined support position. That is, the support position of the first support member 1 is a position where the side end surface of the web R should be when the web R is supported in a correct positional relationship with respect to the printing center of the printing unit (not shown). This is a position determined in advance in terms of design, which is calculated based on factors such as the inner diameter of the core tube K, the inclination angle of the first gradient groove 160, and the outer diameter of the base 121 of the first contact member 12.
[0060]
Next, the operation of the second support means D when the mounting signal N is transmitted will be described. Receiving the mounting signal N, the web paper attachment / detachment switching means 8 and the path switching means 90 each switch the fluid movement path to the state shown in FIG. That is, the fluid supplied from the fluid source M is set to the pressure during normal operation by the first fluid pressure setting means 91 provided in the first fluid path 93, and passes through the web paper attachment / detachment switching means 8 and the path switching means 90. Then, the air is supplied from the connection port 73a into the hermetic chamber 72a.
[0061]
When the fluid is supplied into the airtight chamber 72a, the piston 70 movable in the cylinder 71 is moved to the web R side by the fluid pressure. Due to the movement of the piston 70, the volume of the other airtight chamber 72b in the cylinder 71 is reduced, and the fluid in the airtight chamber 72b passes through the third fluid path 95 from the connection port 73b through the fluid discharge port 80 of the web paper attachment / detachment switching means 8. Discharged.
[0062]
The piston 70 is connected to the second sleeve 6, and the second rotation shaft 50 of the second support member 5 is rotatably supported by the second sleeve 6. Accordingly, when the piston 70 moves in the direction of the web R, the second sleeve 6 and the second support member 5 also move in the direction of the web R, and the second support member 5 presses the core tube K of the web R. The core tube K of the web R is pressed against the first support member 1. That is, as the second support member 5 moves toward the web R, the second insertion portion 56 and the base 521 of the second contact member 52 are sequentially moved from the one end of the core tube K of the web R to the inside of the tube. Inserted into. Then, the side surface on the step side of the rising portion 520 of each second contact member 52 is in contact with the end surface of the core tube K, and each second contact member 52 is pushed by the end surface of the core tube K as it is. The second compression spring 54 moves against the spring force of the second insertion portion 56 along the second gradient groove 560 toward the second flange portion 55. With this movement, each second contact member 52 moves away from the center line of the second insertion portion 56, and the base portion 521 of the second contact member 52 protrudes from the slit groove 560a. The outer peripheral surface of each base portion 521 is in contact with the inner peripheral surface of the core tube K of the web R, and the contact force between both surfaces is determined by the second contact member 52 along the second gradient groove 560 and the second flange. The closer it is to the portion 55, the larger it becomes.
[0063]
Further, when the second support member 5 presses the winding tube R against the first support member 5 of the core tube K, the first support member 1 also has the outer peripheral surface of each base 121 of the first contact member 12 and the winding paper R. The contact force with the inner peripheral surface of the core tube K increases. And if the pressing force in the 2nd supporting member 5 and the reaction force of the 1st supporting member 5 with respect to this pressing force balance, the movement of the 2nd supporting member 5, the 2nd sleeve 6, and the piston 70 will stop.
[0064]
When the movement of the piston 70 stops, the contact forces of the first contact member 12 and the second contact member 52 with respect to the inner peripheral surface of the core tube K become equal. That is, the pressure of the fluid acting on the piston 70 from the side of the airtight chamber 72a acts as a force in which each rising portion 120 of the first contact member 12 moves toward the first flange portion 15 via the core tube K of the web R. Each rising portion 520 of the second contact member 52 acts as a force toward the second flange portion 15. Then, this force presses each of the first contact member 12 and the second contact member 52 with a component force perpendicular to the inclined bottom surfaces of the first gradient groove 160 and the second gradient groove 560 into which the first contact member 12 and the second contact member 52 are inserted. Thus, each of the first contact member 12 and the second contact member 52 has a reaction force component equal to the force pressing the bottom surface from the bottom surfaces of the first gradient groove 160 and the second gradient groove 560, and its The reaction force against the component force interacts as a contact force. Therefore, the greater the pressure of the fluid acting on the piston 70 from the airtight chamber 72a side, the greater the contact force between the first contact member 12 and the second contact member 52 and the core tube K.
[0065]
In the illustrated embodiment of the present invention, when operating in normal operation, the inner peripheral surface of both end portions of the core tube K of the web R, the outer peripheral surface of each base 121 of the first contact member 12, and the second contact member The contact force between the outer peripheral surfaces of the respective base portions 521 of 52 is set to the same contact force as when the web R is mounted. For example, as shown in FIG. 2, when the normal operation is performed with the web R2 attached, the set pressure of the first fluid pressure setting means 91 is from the deceleration performed over a relatively long time by the braking means C during the normal stop. At the time of braking to stop, slip does not occur between the inner peripheral surface of the core tube K of the web R and the outer peripheral surfaces of the base 121 and the base 521 of the first contact member 12 and the second contact member 52, respectively. This is a pressure at which a normal contact force can be obtained.
[0066]
In addition, when suddenly stopping in response to any abnormality occurring during operation, a sudden stop signal P is transmitted to the route switching means 90. By switching the fluid movement path in the path switching means 90 by this sudden stop signal P, during normal operation, the fluid source M passes through the first fluid path 93, that is, the first fluid pressure setting means 91, the web paper attachment / detachment switching means. 8, the fluid supplied to the connection port 73a via the path switching means 90 is stopped. At the same time, from the fluid source M through the second fluid path 94, that is, through the second fluid pressure setting means 92 and the path switching means 90 set to a pressure larger than the set pressure of the first fluid pressure setting means 91, A fluid having a pressure larger than that during normal operation is supplied to the connection port 73a. The piston 70 is further pressed from the airtight chamber 72a side by the fluid pressure larger than that in the normal operation than in the normal operation.
[0067]
The set pressure of the second fluid pressure setting means 92 is such that the inner peripheral surface of the core tube K of the web R2 and the first contact member 12 and the The pressure can obtain a contact force at the time of a sudden stop sufficiently larger than the normal contact force such that no slip occurs between the base 121 of the second contact member 52 and the outer peripheral surface of the base 521.
[0068]
In this manner, the core tube K of the web R2 is supported in the state where the both ends of the core tube K of the web R2 are supported by the first support member 1 of the first support means A and the second support member 5 of the second support means D. The contact force between the first support member 1 and the second support member 5 is obtained by the pressing force of the first support member 1 and the second support member 5 facing each other across the core tube K of the web R2. It is a configuration. Then, switching between the contact force during normal operation and the contact force during a sudden stop larger than that can be easily performed.
[0069]
Further, when the web R is detached from the web support device S, a separation signal Q is transmitted from the web attachment / detachment control unit (not shown) to the web attachment / detachment switching means 8. By switching the inside of the web paper attachment / detachment switching means 8 to the fluid movement paths 84 and 85 by this separation signal Q, the fluid supplied from the fluid source M passes from the connection port 73b to the airtight chamber 72b via the web paper attachment / detachment switching means 8. When a fluid is supplied into the supplied airtight chamber 72b, the piston 70 moves in a direction away from the web R due to the fluid pressure. By the movement of the piston 70, the fluid in the hermetic chamber 72a is discharged from the connection port 73a through the path switching unit 90 and the discharge port 81 of the web paper attachment / detachment switching unit 8. The fluid movement path of the path switching means 90 at this time is in a state position when the web R is mounted. When the piston 70 moves away from the web R, the second sleeve 6 and the second support member 5 also move away from the web R, and the web R is separated from the web support S.
[0070]
【The invention's effect】
(1) The contact force between the contact member of the support member and the core tube of the web is reduced when the rotary press where a large force acts on the contact portion between the core tube of the web and the support member that supports the web is Therefore, when the rotary press is stopped suddenly, slippage in the rotational direction of the core tube of the web and the contact portion of each contact member that supports both ends of the core tube can be reduced. Occurrence can be prevented. Therefore, it has become possible to prevent the contact portion of the contact member from being worn.
[0071]
(2) The contact force between the contact member of the support member and the core tube of the web is also reduced during normal operation of the rotary press where a large force does not act on the contact portion between the core tube of the web and the support member that supports the web. Since it is possible to minimize the rotation without slipping, the bearing portions of the rotating portions of the respective supporting members naturally have improved durability of the entire web support device including the supporting means as a whole.
[0072]
(3) Further, in the invention according to claim 3 of the present application, the pressure switching applying means has a fluid pressure setting means capable of changing at least a small pressure setting among two large and small pressures applied to at least one supporting means. The setting can be changed by adjusting the axial pressure applied to the support member in response to the difference in rotational inertia force accompanying the change in the weight of the web, and the load applied to the web support device can be further reduced. Became possible. Therefore, the durability of the web support device can be further improved.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an entire paper feed unit provided with a web support device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the web support device according to the embodiment of the present invention, taken along line XX of FIG.
FIG. 3 is an enlarged partial cross-sectional view showing a state before the web is mounted on the first support means having one support member, similarly showing a partial cross-section of the web support device shown in FIG. 2;
4 is an enlarged partial cross-sectional view showing a state of the first support means having one support member after the web is mounted, similarly showing a partial cross section of the web support device shown in FIG. 2;
FIG. 5 is an enlarged partial cross-sectional view showing a state before the web is mounted on the second support means having the other support member, showing a partial cross section of the web support device shown in FIG.
FIG. 6 is an enlarged partial cross-sectional view showing a state of the second support unit having the other support member after the web is mounted, similarly showing a partial cross-section of the web support device shown in FIG. 2;
7 is a view similarly showing the front end of the support member, and is a view taken in the direction of arrow Y in FIGS. 3 and 5. FIG.
[Explanation of symbols]
A 1st support means
1 First support member
10 First rotating shaft
100 Rear shaft
101 Key member
11 First stopper
12 First contact member
12a Upper part of first contact member
12b The portion where the first contact member is located
120 Rise
121 Base
13 First spring support
14 First compression spring
15 First flange
16 1st insertion part
160 First slope groove
160a slit groove
160b dovetail
2 First sleeve
20 First bearing
21 1st hole
22 First key member
B Moving positioning means
30 racks
31 Pinion
310 Pinion rotation axis
32 motor
C Braking means
40 Brake bearing
41 Bracket
42 Rotating sleeve
43 Rotating disc
44 Brake pads
D second support means
5 Second support member
50 Second rotation axis
51 Second stopper
52 Second contact member
52a Upper part of second contact member
52b Part of second contact member
520 Rise
521 base
53 Second spring support
54 Second compression spring
55 Second flange
56 2nd insertion part
560 2nd slope groove
560a slit groove
560b Groove
6 Second sleeve
60 Second bearing
61 2nd hole
62 Second key member
E Pushing means
7 Sleeve moving means
70 piston
71 cylinders
72a Airtight room
72b Airtight room
73a Connection port
73b Connection port
8 Winding paper detachment switching means
80 Fluid outlet
81 Fluid outlet
82 Fluid movement path
83 Fluid movement path
84 Fluid movement path
85 Fluid movement path
9 Pressure switching means
90 Route switching means
91 First fluid pressure setting means
92 Second fluid pressure setting means
93 First fluid path
94 Second fluid path
95 Third fluid path
H arm rotation axis
K core tube
J1 1st arm
J2 Second arm
L Rolling paper transport device
M Fluid source
N wearing signal
P Emergency stop signal
Q Exit signal
R Wrapping paper
R1, R2 Wrapping paper
S Rolling paper support device
T frame
W Web paper

Claims (3)

Supports the web, and can rotate and brake in an integrated manner with the web, and in the case of normal stop during normal operation, the roll of paper is stopped after a predetermined rotation braking time, and sudden stop in emergency In this case, in the web support device of the rotary press set to stop the rotation of the web with a rotation braking time shorter than the rotation braking time determined at the time of normal stop,
A pair of support means capable of supporting both ends of the core tube of the web,
Pressure is applied to at least one support means so as to be able to reciprocate in the direction of the other opposing support means and to reduce the distance between the pair of support means, and the distance between the pair of support means is reduced. Pressure switching application means capable of selectively switching at least two pressures that cause the movement of the direction to be selectively applied;
In the case of a sudden stop of the rotary press, the contact force between the support means and the core tube of the web is provided by switching and increasing the pressure that causes the movement in the direction to reduce the distance between the pair of support means. A web support device characterized in that it can be enlarged. Supports the web, and can rotate and brake in an integrated manner with the web, and in the case of normal stop during normal operation, the roll of paper is stopped after a predetermined rotation braking time, and sudden stop in emergency In this case, in the web support device of the rotary press set to stop the rotation of the web with a rotation braking time shorter than the rotation braking time determined at the time of normal stop,
A pair of support means having a pair of support members capable of supporting both ends of the core tube of the winding paper;
Moving positioning means for positioning by moving at least one supporting member toward the other supporting member;
Braking means capable of braking the rotation of the support member;
At least one support member is reciprocally moved in the direction of the other opposing support member, and pressure is applied to move in a direction that reduces the interval between the pair of support members, and the interval between the pair of support members is reduced. Pressing means having pressure switching application means capable of selectively switching at least two of the pressures for moving the direction selectively, and
At least one support member has a contact member provided in each of the plurality of gradient grooves so as to be able to reciprocate, and the outer periphery of the contact member due to the movement of each contact member caused by a change in pressure applied to the support member A support member in which the contact force between the surface and the inner peripheral surface of the core tube of the web is changed,
In the case of a sudden stop of the rotary press, the contact force between the support means and the core tube of the web is provided by switching and increasing the pressure that causes the movement in the direction to reduce the distance between the pair of support means. A web support device characterized in that it can be enlarged. The pressure switching applying means comprises fluid pressure setting means capable of changing at least a small pressure setting among two large and small pressures applied to at least one supporting means. The web support device according to the description.

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