JPH0678136B2 - Paper roll drive - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper web drive device, and more particularly, to a new paper web feeding device for rotating a new paper web in a paper feeding section of a rotary press using the paper web. The present invention relates to a driven paper roll drive device.

[Conventional technology]

Generally, in a paper splicing process in a paper feeding section of a rotary press using a web, it is necessary that the traveling speed of the web material that has been pulled out from the old web in advance and the peripheral speed of the new web be equal. Therefore, the paper feed unit is provided with a paper roll drive device that rotationally drives the new paper roll.

Therefore, in the prior art, as such a paper web driving device, for example, "newspaper printing printing edition revised edition" (Showa era)
"Predrive" disclosed on pages 74-75, October 31, 1955, published by The Japan Shimbun Association, JP-B 33-19602, JP-B 48-73002, JP-B 63-48785. There is one disclosed in each of the official gazette and the Japanese Utility Model Publication No. 2-8920.

"Newspaper printing, revised edition" (October 31, 1980, published by The Japan Shimbun Association), pages 74-75 and Jikho Sho 33-19602
What is described in the publication is rotationally driven in a state in which a drive endless belt or a drive wheel that can be brought into contact with and separated from the outer peripheral surface of a new paper roll and is connected to a driving means is pressed against the outer peripheral surface of the new paper roll. The paper roll is directly driven by.

What is disclosed in Japanese Utility Model Laid-Open No. 48-73002 is a support shaft for a paper roll in which a support shaft for the paper roll is provided with a friction ring, and a drive roller or a drive belt which can be pressed into contact with the friction wheel is connected to a drive means. It is rotationally driven in a state of being pressed against a friction wheel provided on the paper, and thereby the paper roll is rotationally driven via a support shaft.

In Japanese Patent Publication No. 63-48785 and Japanese Utility Model Publication No. 2-8920, a gear is provided on a support shaft of a paper roll, and a drive gear which can be meshed with and is connected to a drive means is provided. The drive gear is rotationally driven in a state of being meshed with the gear provided on the support shaft of the paper roll, and the paper roll is rotationally driven via the support shaft.

[Problems to be Solved by the Invention]

Each of the above-mentioned conventional devices has the following drawbacks.

First, “Newspaper Printing, Revised Edition” (October 31, 1980, published by The Japan Newspaper Association), pages 74-75, and Shoko 33-
What is described in the 19602 publication, because the drive endless belt or drive wheel is pressed against the outer peripheral surface of the web,
Since the adhesive for splicing cannot be attached to the end of the rolled paper corresponding to that portion, the adhesive force at splicing is reduced. Further, slippage may occur between the drive endless belt or drive wheel and the outer peripheral surface of the web, the stable peripheral speed of the web cannot be obtained, and the outer peripheral surface of the web may be damaged.

The one described in Japanese Utility Model Publication No. 48-73002 has a slip between the friction wheel and the drive roller or drive belt,
The stable peripheral speed of the paper roll cannot be obtained. Further, the friction wheel, the drive roller and the drive belt are worn out for a long period of time, and the drive transmission cannot be performed at the set peripheral speed.

Since those disclosed in Japanese Examined Patent Publication No. 63-48785 and Japanese Utility Model Publication No. 2-8920 require accurate center distance when the gear provided with the support shaft of the paper roll and the drive gear mesh with each other. Since a special gear with a cylindrical portion is required, it is expensive in price. Further, the cylindrical portion may be worn due to long-term use, the set center distance may not be maintained, and the gear may be damaged. Further, the generation of noise due to the meshing rotation of the gears contributes to the deterioration of the working environment.

The present invention provides a device that overcomes the above-mentioned drawbacks of the conventional devices.

[Means for Solving the Problems]

The paper web drive device according to the present invention is provided with a set of paper web support members facing each other on a rotational shaft that is rotationally driven,
A paper feeding device in which a plurality of support members for supporting the core of the paper roll are rotatably arranged on the respective paper roll support members on the same circumference and on the same axis as the paper roll support members of the opposite paper roll support member. A drive shaft that is rotationally driven by a drive source, a swing arm that is rotatably supported by the drive shaft, a fluid pressure cylinder that swings the swing arm around the drive shaft, and a drive shaft. Drive side toothed pulley mounted so as to rotate integrally, swing side toothed pulley rotatably supported on the swing side of the swing arm, drive side toothed pulley and swing side toothed pulley It is equipped with a double-sided toothed timing belt whose inner side faces are meshed with each other and a driven-side toothed pulley that is attached to the support member of the core of the paper roll so as to rotate integrally and can mesh with the outer side surface of the double-sided toothed timing belt. ing.

[Work]

When splicing the new roll paper from the old roll paper, when the diameter of the old roll reaches the set paper diameter, the fluid pressure cylinder operates and the swing arm moves the drive shaft. Rotate on the axis. Then, the outer side surface of the double-sided toothed timing belt approaches and engages with the driven-side toothed pulley of the support member for the core of the new paper roll. This engagement is performed at any position between the drive-side toothed pulley and the swing-side toothed pulley of the double-sided toothed timing belt. Thus, regardless of the rotational phase of the web support, i.e., regardless of the diameter of the new web, the outer surface of the double-sided toothed timing belt can be engaged with the driven toothed pulley.

Then, when the drive source is activated, the new paper roll is rotated via the drive shaft, the drive-side toothed pulley, the double-sided toothed timing belt, the swing-side toothed pulley, the driven-side toothed pulley, and the support member. The peripheral speed is increased until it reaches the running speed of the web material.

In this way, the splicing is performed by the splicing device in a state where there is no relative speed between the outer peripheral surface of the new web and the web material.

When the paper splicing process ends, the fluid pressure cylinder operates in reverse, and the swing arm rotates in the opposite direction about the drive shaft. Then, the outer side surface of the timing belt with double-sided teeth separates from the driven-side toothed pulley of the support member for the core of the new paper roll, retracts to the standby position, and the drive source, that is, the drive shaft also stops.

〔Example〕

First Embodiment of Roll-up Paper Drive Device of First Embodiment of the Present Invention
It will be described with reference to FIGS. 2, 3 and 4.

In a winding paper drive device of a paper feeding device of a rotary press using a winding paper, a machine frame 1 and a machine frame 2 are installed upright in parallel to face each other, and both ends of a trifurcated shaft 3 orthogonal to the machine frames 1 and 2 are , Machine frame 1,2
It is rotatably supported by bearings. In addition, the trifurcation shaft 3
Can be moved in the axial direction by a moving mechanism (not shown).

The three-pronged arms 4 and 5 are key-coupled to the three-pronged shaft 3 with the three-pronged arms 4 and 5 facing each other with a gap in the axial direction between them.
The opposing arms 4a, 5a; 4b, 5b; 4c, 5c of and are parallel to each other. Center collars 6 and 7, which are supporting members for the paper roll, are rotatably supported at the respective ends of the three-pronged arms 4 and 5 around the axis parallel to the axis of the three-pronged shaft 3, and both ends of the core material of the paper roll are centered. By being supported by being sandwiched between the collars 6 and 7, the paper roll is rotatably supported by the three-pronged arms 4 and 5. Further, a toothed pulley 8 that meshes with a double-sided toothed timing belt of a belt driving means described later is fixed to the outer end portion of the center collar 6 on the machine frame 1 side.

To describe the belt driving means, a downward U-shaped subframe 9 having side wall portions 9a and 9b spaced apart in the axial direction of the trifurcated shaft 3 is attached to the inner surface of the machine frame 1 above the trifurcated shaft 3. Between the side walls 9a and 9b on both sides of the trifurcated shaft 3
Guide rods 10 and 11 that are parallel to and parallel to each other are installed. And the supporting arm portion which is spaced in the axial direction of the trifurcated shaft 3.
The inverted U-shaped arm 12 provided with 12a, 12b is supported so that the guide rods 10, 11 can be slid by being guided by the guide rods 10, 11 by inserting the guide rods 10, 11 into the slide holes. Further, a fluid pressure cylinder 13 attached to one side wall portion 9b of the subframe 9
A piston rod 13a of the above is connected to the inverted U-shaped arm 12.

More specifically, referring to FIG. 3, the rotary shaft 16 rotatably supported by the bearings 14 and 15 at the lower ends of the supporting arms 12a and 12b of the inverted U-shaped arm 12 includes the supporting arms on the machine frame 1 side. The extension 12a is projected and extended outward, and the extended portion serves as a spline shaft portion 16a, and further projects outward from the machine casing 1 through a through hole 17 formed in the machine casing 1.

The base ends of the two bending arms 18 and 19 are rotatable by bearings on the rotary shaft 16 between the two supporting arms 12a and 12b of the inverted U-shaped arm 12 with a gap in the direction of the rotary axis. The toothed pulley 20 is key-connected by being sandwiched between the bending arms 18 and 19. The base end of one of the bending arms 18 becomes an extension 18a, and the supporting arm 12a of the inverted U-shaped arm 12 is formed.
Is pivotally attached to the tip of a piston rod 21a of a fluid pressure cylinder 21 attached to the.

A shaft 22a and a rotatable shaft 23a are provided between the bending arms 18 and 19 at the tips and the bending protrusions of the bending arms 18 and 19, and the toothed pulleys 22 and 23 are rotatably supported, respectively. A double-sided toothed timing belt 24 is wound around the toothed pulleys 20, 22, 23. A swing arm that rotatably supports a tension pulley 25 with teeth at its tip
The bases of 26, 26 are fixed to the shaft 23a, and a hook 27 is planted on the outer peripheral surface of the protruding end of the shaft 23a and a pin 28 is planted on the bending arm 18.
A tension coil spring 29 is stretched between the two, and the spring force causes the swinging arms 26, 26 to be always urged to rotate clockwise in FIG. It engages the surface of belt 24.

The bracket 30 attached to the machine frame 1 has a toothed pulley
31 is rotatably supported, and the center hole of the toothed pulley 31 is splined to the spline shaft portion 16a of the rotary shaft 16. Further, a timing belt 34 is wound between the toothed pulley 31 and a toothed pulley 33a attached to a motor shaft of a motor 33 attached to a bracket 32 attached to the machine frame 1.

On the other hand, in the paper feeding device, the web material paper P which is drawn and runs from the old web X attached to the opposing arms (4a and 5a in FIG. 1) of the three-pronged arms 4 and 5 is provided to the adjacent opposing arm (see FIG. 1). so
4b, 5b), a brush 40 that operates so as to press against the peripheral surface of the new web Y, a cutter 41 that operates so as to cut the web material P immediately upstream thereof, and a web material P at the upstream side thereof. A guide member 42 for guiding is attached, and one end is pivotally attached to a machine frame and a paster arm 43 pivotally attached to the machine frame, and a piston rod is pivotally attached to the paster arm 43 to rotationally displace the paster arm 43. A known paper splicing device having a fluid pressure cylinder 44 is provided. or,
The paper edge of the new winding paper Y is temporarily fixed to the outer circumferential surface of the new winding paper Y so that it cannot be unraveled by the rotation of the new winding paper Y.
At the time of paster, the surface of the edge of the paper is pasted so as to be attached to the web material P.

The paper web drive device according to the second embodiment of the present invention has a fourth and a fifth embodiment.
It will be described with reference to the drawing.

In the paper web drive of the second embodiment, the inverted U-shaped arm 51 has one supporting arm 51a extended, and the boss 53 of the three-pronged arm 52 is loosely fitted in the through hole formed at the end of the arm 51a.
A stop ring 54 fixed to the end face of 53 prevents displacement in the axial direction. In this type, the fluid pressure cylinder 13 in the first embodiment is not provided.

To describe the operation and action of the above-mentioned paper roll drive device,
The splicing process of old and new rolled paper in the paper feeding device is performed as follows.

In FIG. 1, the web material paper P is passed through a printing unit (not shown) on the downstream side of the paper feeding device and is running. Then, when it is detected by a sensor (not shown) that the diameter of the old paper roll X has reached the set first paper diameter,
The fluid pressure cylinder 44 is actuated by the detection signal, the piston rod is extended, the paster arm 43 is rotated clockwise in FIG. 1, and the guide member 42 moves the web material P to the vicinity of the outer peripheral surface of the new winding paper Y. Stretched. At the same time, when the fluid pressure cylinder 21 is actuated and the piston rod 21a is retracted, the bending arm 18 is rotated clockwise about the rotary shaft 16 in FIG.
Then, the double-sided toothed timing belt 24 engages with the toothed pulley 8 of the center collar 6 of the opposing arm 4b on which the new paper roll Y is mounted. This engagement is performed at any position between the toothed pulley 20 and the toothed pulley 22 of the double-sided toothed timing belt 24. Therefore, the trifurcation arm 4,
The double-sided toothed timing belt 24 can be engaged with the toothed pulley 8 regardless of the rotation phase of 5, that is, regardless of the diameter of the new web Y, and therefore, regardless of the diameter of the new web Y, as described below. Paper splicing is performed.

Then, when the motor 33 is started, the new paper roll Y is provided with a toothed pulley 33a, a timing belt 34, a toothed pulley 31, a rotary shaft 16, a toothed pulley 20, a double-sided toothed timing belt 24, a toothed pulley 8 and Center color 6
1 is rotated counterclockwise in FIG. 1 and the peripheral speed thereof is increased until the traveling speed of the web material P is reached.

Subsequently, when a sensor (not shown) detects that the diameter of the old paper roll X has decreased to the set second paper diameter, the brush 40 is activated by the detection signal, and the old paper roll X is removed.
The web stock P from is pressed against the outer peripheral surface of the new web Y,
The web material P is pasted from the old web X on the upstream side of the pasting position by adhering to the paper edge of the new web Y and further operating the cutter 41.
Is disconnected. In this way, the splicing process is completed, and the web stock P is supplied from the new web Y.

When the paper splicing process is completed, the fluid pressure cylinder 21 operates in reverse, and the piston rod 21a extends. As a result, the bending arm 18 rotates counterclockwise about the rotary shaft 16 in FIG. Then, the double-sided toothed timing belt 24 is disengaged from the toothed pulley 8 of the center collar 6 of the opposing arm 4b on which the new paper roll Y is mounted, retracts to the standby position, and the motor 33 also stops.

Further, since the fluid pressure cylinder 44 also operates in the opposite direction and the piston rod retracts, the paster arm 43 rotates counterclockwise in FIG. 1 and retracts to the standby position.

Then, as a result that the trifurcating shaft 3 is rotationally driven in the clockwise direction in FIG. 1 by the driving unit (not shown), the trifurcating arms 4 and 5 pivot, the new winding paper Y revolves, and the new winding paper Y moves to a predetermined position. When reached, the drive stops the trifurcated shaft 3.

When the paper width of the web is changed or the traveling position of the web material P is slightly changed due to the relationship with the downstream printing unit (not shown) for the convenience of desired printing, the movement mechanism (not shown) for the three-pronged arms 4 and 5 is used. Is moved in the axial direction of the trifurcated shaft 3. In that case, the toothed pulley 8 also moves with the center collar 6, which moves according to the trifurcated arm 4. Therefore,
In order to maintain the positional relationship between the double-sided toothed timing belt 24 and the toothed pulley 8 in the moving direction of the trifurcated arm 4, the position of the double-sided toothed timing belt 24 is aligned with the toothed pulley 8.

To adjust the position of the double-sided toothed timing belt 24, the moving positions of the three-pronged arms 4 and 5 and the toothed pulley 8 are detected by a sensor (not shown), and a fluid pressure is detected by a control device (not shown) based on the detection signal. The cylinder 13 is actuated, and the piston rod 13a is expanded and contracted to displace the inverted U-shaped arm 12 along the guide rods 10 and 11 by a predetermined amount. Then,
The double-sided toothed timing belt 24 is displaced by the same amount in the axial direction of the trifurcated shaft 3 via the bending arms 18, 19 and the toothed pulleys 20, 22, 23. Thus, double-sided toothed timing belt
The position of 24 is aligned with the position of the toothed pulley 8.

For adjusting the position of the double-sided toothed timing belt 24, an operating mechanism manually operated by an operator may be used instead of the mechanism including the sensor, the control device and the fluid pressure cylinder.

In the second embodiment (FIGS. 4 and 5), since the inverted U-shaped arm 51 is axially connected to the three-pronged arm 52, the movement of the three-pronged arms 4 and 5 is unchanged.
Since the movement is 1, that is, the double-sided toothed timing belt 24 is moved, the positional relationship between the toothed pulley 8 and the double-sided toothed timing belt 24 is maintained without change. Therefore, the timing belt position adjusting means with double-sided teeth as in the first embodiment is unnecessary.

〔The invention's effect〕

In the paper web drive device according to the present invention, the rotation drive transmission is performed by the engagement of the timing belt and the toothed pulley, so that the rotation is transmitted accurately without slipping. As a result, the peripheral speed of the new paper roll is stabilized, and accurate paper splicing processing is performed.

The engagement between the timing belt and the toothed pulley does not require accurate maintenance of the center distance as in the case where the gears mesh with each other, so there is no risk of tooth damage.

Further, in the rotation drive transmission by the engagement of the timing belt and the toothed pulley, noise is reduced and the working environment is improved. As a result, the mental burden on the worker is reduced and the working efficiency is improved.

Especially in a device such as a printing machine that wants to avoid stains on the paper, the transmission between the double-sided toothed timing belt and the toothed pulley is different from the transmission between the chain and the sprocket.
Since no lubricating oil is used, contamination due to scattering of lubricating oil can be avoided.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic structure of a paper winding drive device according to a first embodiment of the present invention, and FIG. 2 is a partial cross-sectional side view showing a schematic structure of a paper winding drive device according to the first embodiment of the present invention. FIG. 3 is a partial cross-sectional side view of the timing belt drive means with double-sided teeth of the paper web drive device according to the first embodiment of the present invention, and FIG. 4 shows the schematic structure of the paper web drive device according to the second embodiment of the present invention. FIG. 5 is a partial cross-sectional side view showing a schematic configuration of the paper winding drive device according to the second embodiment of the present invention. 1,2: Machine frame, 3: Three-way shaft, 4,5,52: Three-way arm 4a, b, c; 5a, b, c: Opposing arm 6,7: Center collar 8,20,22,23,31, 33a: Toothed pulley 9: Subframe, 9a, 9b: Side wall part 10,11: Guide rod, 12a, 12b, 51a: Support arm part 12,51: Inverted U-shaped arm 13,21,44: Fluid pressure cylinder 13a , 21a: Piston rod, 14, 15: Bearing, 16: Rotating shaft 16a: Spline shaft part, 17: Through hole 18,19: Bending arm, 22a, 23a: Shaft 24: Timing belt with tooth on both sides 25: Tension pulley, 26: Swing arm 27: Hook, 28: Pin, 29: Tensile coil spring 30,32: Bracket, 33: Motor 34: Timing belt, 40: Brush, 41: Cutter 42: Guide member, 43: Paster arm, 53 : Boss 54: Stop ring, P: Web paper, Y: New paper roll X: Old paper roll

Claims (1)

[Claims] 1. A set of paper roll supports facing each other on a rotationally driven rotating shaft, each of the paper roll supports being provided with:
A plurality of support members that support the core of the paper roll on the same circumference,
Further, in a sheet feeding device rotatably arranged on the same axis as the web support member of the opposite web support, a drive shaft rotated by a drive source, and a swing rotatably supported by the drive shaft. Arms, swing cylinders A fluid pressure cylinder that swings the swing arms around the drive shaft, a pulley on the drive side that is mounted to rotate integrally with the drive shaft, and a rotatably supported swing side of the swing arms. The toothed pulley on the swing side, the toothed pulley on the drive side and the toothed pulley on the swing side are meshed with the inner side surface of the toothed timing belt and the core of the paper roll to rotate integrally. Installed,
A paper winding drive device having a toothed pulley capable of meshing with the outer surface of a double-sided toothed timing belt.