JP2594669Y2 - Washing web roller support for printing press - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] The present invention is applicable to various printing presses.
The present invention relates to a cleaning web roller supporting device provided in a cleaning device for cleaning a printing cylinder such as a blanket cylinder and an impression cylinder, and a roller such as a setting roller and a swing roller, and supporting a cleaning web roller.

[0002]

2. Description of the Related Art Various printing presses such as offset printing presses and intaglio printing presses are provided with printing cylinders such as plate cylinders, blanket cylinders and impression cylinders, and rollers such as forming rollers and swing rollers. Since a foreign substance such as ink residue or paper dust adheres to the peripheral surface of the printing medium and deteriorates the quality of a printed matter, a cleaning device for removing the foreign substance is provided.

[0003] A cleaning device of this type is, for example, for cleaning a blanket cylinder, a cleaning web roller extending in the axial direction near the peripheral surface of the blanket cylinder and having both ends rotatably supported by bearings of a device frame. And a take-up roller, and a belt-like cleaning web (hereinafter simply referred to as a web) made of nonwoven fabric or the like is wound on the supply roller in a separate step. Then, the web is pressed against the peripheral surface of the ink roller by a guide roller or a pad provided between the supply roller and the winding roller, and then wound around the winding roller.

[0004] With this configuration, when the blanket cylinder is rotated and the take-up roller is rotated intermittently, the web intermittently travels, and foreign matters adhering to the peripheral surface of the blanket cylinder are removed by the web. The web is wiped off and transferred to the web, and the web is wound on a wind-up roller while foreign matters are adhered.

When cleaning the ink roller,
For example, a device that scrapes foreign matter attached to the peripheral surface of an ink roller with a doctor is used. That is, in this apparatus, the web that is unwound from the supply roller and faces the take-up roller is separated from the peripheral surface of the ink roller, and the rear end of the web comes into contact with the web between the supply roller and the take-up roller. There is provided a doctor whose tip is in contact with the peripheral surface of the ink roller.

With this configuration, after the tip of the doctor is brought into contact with the peripheral surface of the ink roller, the blanket cylinder is rotated and the winding roller is rotated intermittently.
The foreign matter adhering to the peripheral surface of the ink roller travels intermittently, and is scraped off by a doctor, moves on the plane of the doctor, and is transferred to the web. It is wound on a take-up roller.

In each of these two types of cleaning apparatuses, when the web on the supply roller runs out, the empty supply roller is removed from the supporting member on the apparatus frame side, and the web is fully wound instead. A roller is mounted, and in the same manner, an operation is performed in which the winding roller on which the web is fully wound is replaced with an empty winding roller. When cleaning is not performed, the entire cleaning device is removed from the main unit and stored.

As described above, in the web cleaning apparatus attached to the printing press, the supply roller and the take-up roller must be replaced each time the supply roller becomes empty. Since the entire device must be removed from the machine, the device frame
A cleaning web roller supporting device that detachably supports a supply roller and a take-up roller serving as the cleaning web rollers is provided.

[0009]

However, in the conventional cleaning web roller supporting apparatus, the web is fixed by sandwiching the hollow core material of the web roller around which the web is wound from both ends with fixing metal fittings. In order to hold it, wrinkles can be formed at both ends of the web, and when removing the web roller, the fixing metal bites into the hollow core material of the web roller, making it difficult to remove and the workability is poor, There is a problem that the width of the entire cleaning device is increased by the amount of the fixing bracket, and the machine becomes larger.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a cleaning web roller support device for a printing press, in which a web roller can be easily attached and detached and the size of the machine can be reduced.

[0011]

According to the present invention, a cleaning web roller supporting device for a printing press, which supports a hollow web roller around which a cleaning web is wound, is provided in a radial direction. A fixing member formed so as to be able to expand and contract and fitted into the inner hole of the web roller, and formed so as to be movable in the axial direction by being engaged with the fixing member and to press the fixing member in the axial direction by the movement; A pressing member that expands the fixing member in the radial direction to fix the web roller and the fixing member, and supports the web roller on the frame side.
A support member, wherein the web roller serves as the fixing member.
It is almost perpendicular to the axis of the web roller when fixed
And a supporting member that is detachably supported from the direction .

[0012]

For example, when assembling a supply roller as a web roller around which a cleaning web is wound and mounting it on an apparatus frame, first, for example, a center shaft constituting a pressing member is inserted into an inner hole of the supply roller. After inserting and inserting a fixing member made of an elastic material at both ends thereof in a state of being fitted into the inner hole of the supply roller, when a part of the pressing member is moved in the axial direction to press the fixing member, The fixing member expands in the radial direction, and the web roller and the fixing member are fixed. Thereafter, when the pressing member is fitted to the holder on the device frame side, the supply roller is mounted on the device frame. Web roller device frame
When attaching and detaching the web
Can be performed from a direction substantially perpendicular to the axis of the roller.

[0013]

1 to 7 show an embodiment of a cleaning web roller supporting device for a printing press according to the present invention for cleaning an ink roller. FIG. 1 is a longitudinal sectional view of an end portion of a winding roller.
Is a schematic exploded front view showing the winding roller and its supporting device partially expanded, FIG. 3 is a side view of the ink roller cleaning device,
4 is a side view of the cleaning unit, FIG. 5 is a side view of the apparatus frame, FIG. 6 is a side view of the ink roller cleaning apparatus, and FIG. 7 is a front view of the apparatus frame.

In the drawing, reference numerals 1 and 2 denote ink rollers which have their peripheral surfaces in contact with each other and whose both end shafts are supported by bearings of a machine frame 6 shown in FIG. An ink roller cleaning device indicated by reference numeral 3 is provided on the side of the ink rollers 1 and 2, and the ink roller cleaning device 3 includes an apparatus frame 4 shown in FIGS. And a cleaning unit 5 detachably provided on the apparatus frame 4.

The pair of left and right device frames 4 includes:
As shown in FIG. 7, an L-shaped front view is formed, fixed to the machine frame 6 by bolts 7 and the like, and protrudes inward from the machine frame 6. A doctor 9 extending in the axial direction of the ink roller 1 is fixed to a long support bar 8 having both end shafts 8a rotatably supported at one side edge by a pressing plate 10.

As shown in FIG. 3, below one end shaft 8a of the support bar 8, a gear shaft 11 is provided with left and right device frames 4.
A segment gear 13 meshing with the gear 12 on the end shaft 8a is fixed to the gear shaft 11, and is driven by a driving device (not shown) on the machine frame 6 side. 11 rotates in a forward direction and a reverse direction by a predetermined angle, so that the doctor 9 moves the segment gear 13 and the gear 1.
2, it is configured to rotate between a use position where the front end contacts the peripheral surface of the ink roller 1 and a storage position where the front end is separated from the peripheral surface of the ink roller 1.

On the apparatus frame 4 on which such a doctor 9 and the like are mounted, a long plate-shaped stay 14, upper and lower round stays 15, 16 and a pair of right and left connected by these stays 14, 15, 16 are provided. The cleaning unit 5 having a bracket 17 is detachably supported.

As shown in FIG. 6, the cleaning unit 5 at the time of mounting is
a is supported on a bearing surface 4 a of the device frame 4,
Further, a laterally projecting portion 14a of the stay 14 is supported on a vertical surface of the device frame 4 and is locked from falling off by a locking member 18 at the upper end of the device frame 4.

That is, on the apparatus frame 4 side, a rotatable stopper 19 is supported by a set screw 20 with a knob screwed into a screw hole of the apparatus frame 4. The state shown in FIG. 7 is rotated from the state shown in FIG. 6 to the state shown in FIG. 6 to engage with the stay 14, and then the set screw 20 is tightened.

In this manner, the bracket 17 which is detachably supported by the apparatus frame 4 and constitutes the cleaning unit 5
Supply rollers 2 as web rollers
Both ends of a pressing member (described later) that penetrates the center of the take-up roller 22 and the take-up roller 22 are detachably supported.
The supply roller 21 includes a web 23 and a hollow core 24 around which the web 23 is wound in a previous step. Further, the winding roller 22 is provided with a web 23.
And a hollow core 24 around which a web 23 unwound from the supply roller 21 is wound.

The winding roller 22 and its supporting device will be described in more detail with reference to FIG. 1. The supporting device has a center shaft 25 engaged with an inner hole 24a of a core member 24. At the small-diameter step portions at both ends of the shaft 25, pads 26 serving as fixing members formed in an annular shape of an elastic material such as rubber and capable of expanding and contracting in the radial and axial directions are provided.
7, 28 are fitted and fitted.

Further, in a screw hole 25a formed at the center of both ends of the central shaft 25, a push screw 29 constituting a pressing member together with the central shaft 25 is provided with a pad 2 in the plane of the flange 29a.
The screw portion 29b is screwed in so as to compress the shaft 6 in the axial direction. As a result, the pad 26 is expanded in the radial direction and the center shaft 25 and the core member 24 are fixed. .

Although the winding roller 22 has been described above, the supply roller 21 has exactly the same configuration as the winding roller 22, and the pad 26 is formed by the flat surface of the flange 29 a of the push screw 29.
Is compressed in the axial direction to expand the pad 26 in the radial direction so that the center shaft 25 and the core member 24 are fixed.

Further, the supply roller 21 and the winding roller 2
2 means that the ridge 29c of the push screw 29 is
7, holders 30 and 3 rotatably provided at both upper and lower ends.
And the holder 30 is engaged with the first grooves 30a and 31a.
The lever 32 is fitted to the shaft portion via a one-way clutch.

Further, a collar 33 having a concave groove 33a at one location in the circumferential direction is fitted to the holders 30 and 31, and is fixed with a set screw.
3 and the concave groove 33a and the concave grooves 3 of the holders 30 and 31 are rotated.
0a and 31a, the supply roller 2
1 and the take-up roller 22 are configured to be detachable.

Then, the end of the web 23 wound around the core member 24 of the supply roller 21 is guided to the winding roller 22 and wound around the core member 24. Thereafter, the winding roller 22 is rotated by the rotation driving device described later. By rotating the web 23
Is wound off from the core 24 of the supply roller 21, comes into contact with the holding plate 10, and is wound on the core 24 of the winding roller 22.

A description will now be given of a rotation driving device for the winding roller 22. Lever 3 fixed to holder 29
A pin 34 is implanted at the free end of the cylinder 2, and the pin 34 is in contact with a piston rod 36 of an air cylinder 35 as a driving device supported by the device frame 4. A tension coil spring 37 for urging the lever 32 to rotate clockwise in FIG. 3 is stretched between the pin 34 and the pin 36a on the bracket 17 side. Reference numeral 38 denotes a stopper that regulates the rotation end of the lever 31.

By doing so, when the piston rod 36 of the air cylinder 35 is reciprocated at a predetermined cycle, the lever 32 swings so as to reciprocate in the forward and reverse directions, and is actuated via the holder 30 by the action of the one-way clutch. The take-up roller 22 is configured to take up the web 23 by intermittently rotating in one direction.

The operation of the web cleaning apparatus configured as described above will be described. When cleaning the ink roller 1, the center shaft 25 of the supply roller 21 having the pad 26 or the like prepared outside the machine is attached to the web 2 in a separate process.
3 is inserted into the inner hole 24a of the wound core material 24, and the push screw 29 is tightened. As a result, the pad 26 expands in the radial direction by being compressed in the axial direction. Fixed. Similarly, the center shaft 25 of the winding roller 22 and the empty core 24 are fixed. In this manner, the fixing between the center shaft 25 and the core member 24 can be easily performed by a simple operation of merely rotating the push screw 29, and the pad 26 and the push screw 29 are not separated easily. .

Then, the set screw of the collar 33 is loosened and rotated, so that the concave groove 33a of the collar 33 and the holder 3 are rotated.
The concave grooves 30a and 31a of the 0 and 31 are made to coincide with each other, and the ridge 29a of the push screw 29 is inserted into the coincident concave grooves 33a and 31a. Then, after the collar 33 is rotated to shift the concave groove 33a and the concave grooves 30a and 31a in the circumferential direction, the collar 33 is fixed with a set screw, whereby the supply roller 21 is rotated.
And the take-up roller 22 are mounted.

After the mounting, the web 23 is rewound from the supply roller 21, guided to the winding roller 22, and the end thereof is fixed to the winding roller 22. Thus, the supply roller 2
Cleaning unit 5 equipped with 1 and winding roller 22
Is supported by the device frame 4 while supporting the lower end surface of the bracket 17 with the support surface 4 a of the device frame 4, and the side projection of the stay 14 is supported by the vertical surface of the device frame 4. Then, when the stopper 19 is rotated from the state shown in FIG. 5 to the state shown in FIG. 6 to engage with the stay 14 and then the set screw 20 is tightened, the cleaning unit 5 is fixed and supported on the apparatus frame 4.

Next, when the gear shaft 11 is rotated by a driving device (not shown), the doctor 9 rotates by meshing of the segment gear 13 and the gear 12, and the distal end thereof comes into contact with the peripheral surface of the blanket cylinder 1.

After the preparation as described above, the air cylinder 3
5 is operated to reciprocate the piston rod 36 at a predetermined timing, the lever 32 swings and the winding roller 22 rotates intermittently by the action of the one-way clutch, and the web 23 runs intermittently. In this state, the ink roller 1
Is rotated, the foreign matter adhering to the peripheral surface of the ink roller 1 is scraped off by the doctor 9, moves on the plane of the doctor 9, and is transferred to the web 23, and the web 23 keeps the foreign matter adhered.ゝ It is wound by the winding roller 22.

When the cleaning operation is completed, the gear shaft 11
To rotate the doctor 9 so that the leading end is separated from the peripheral surface of the ink roller 1, then loosen the set screw 20 to rotate the stopper 19 to the position shown in FIGS. Since the fixing between the cleaning unit 5 and the apparatus frame 4 is released, the entire cleaning unit 5 is removed from the apparatus frame 4 to the outside of the machine.

During the cleaning operation, the web 2 on the supply roller 21 side
In the case where the supply roller 3 is replaced with the new one, the set screw is loosened to rotate the collar 33 so that the concave groove 33a on the collar 33 and the concave groove 30a on the cleaning unit 5 coincide with each other. And the take-up roller 22 can be taken out of the machine, so that the empty core material 24 and the core material 24 on which the web 23 is wound can be easily exchanged by the reverse operation of the mounting operation described above.

FIG. 8 is a longitudinal sectional view of an end portion of a take-up roller showing another embodiment of the present invention corresponding to FIG. 1, and members having the same configuration as in the above-mentioned embodiment are denoted by the same reference numerals. The detailed description is omitted. In this embodiment, the inner hole 24 of the core material 24 is used.
A push screw 40 as a pressing member having a flange 40a is engaged with both end portions, and the push screw 40 and the core 2
An annular rubber pad 26 and metal rings 27 and 28 are interposed between the inner hole 24a and the inner hole 24a. further,
Nut 41 to the threaded portion 40 b of the screw 40 pushing is screwed. Reference numeral 40c denotes a ridge protruding from the push screw 40.

With this configuration, the pad 26 is compressed by rotating the nut 41 while the flange 40a is in contact with the ring 28, so that the pad 26 expands in the radial direction, The push screw 40 and the core member 24 are fixed. In this manner, the fixing of the push screw 40 and the core member 24 can be easily performed by a simple operation, and the pad 26 and the push screw 29 are not easily separated.

FIG. 9 is a longitudinal sectional view of a winding roller end portion showing another embodiment of the present invention corresponding to FIG. 1, and members having the same constitutions as those of the above embodiment are denoted by the same reference numerals. And a detailed description thereof will be omitted. In this embodiment, a push screw 42 as a pressing member having a flange 42a is engaged with both ends of the inner hole 24a of the core member 24, and the push screw 42 is provided with a tapered portion 42b. ing. A rubber pad 26 and a plurality of circumferentially divided taper rings 43 are interposed between the tapered portion 42b of the push screw 42 and the core material inner hole 24a. A metal ring 44 is interposed between the straight portion 42c and the straight portion 42c. Reference numeral 42d denotes a ridge protruding from the push screw 42.

With such a configuration, by rotating the nut 41, the tapered portion 42b
The pad 26 is radially expanded by the action of
2 and the core member 24 are fixed. Thus, the push screw 42
The core 26 and the core member 24 can be easily fixed by a simple operation, and the pad 26 and the push screw 42 are not easily separated from each other.

FIG. 10 shows another embodiment of the present invention.
And FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. In this embodiment, the core material 24
Screw holes 4 are provided at both end surfaces of the core shaft 45 engaged with the inner hole 24a of
5a, and the screw hole 45a has a flange 4
6a is fitted with the inner hole 24a of the core material 24.
Screw portion 46b is screwed. In addition, the push screw 46
Between the tapered portion 46c and the inner hole 24a of the core member 24, a metal taper ring 47 divided into four in the circumferential direction.
And an annular pad 48 made of an elastic material. Further, a metal washer 49 is interposed between the end face of the taper ring 47 and the pad 48 and the end face of the core shaft 45. 5
Reference numeral 0 denotes a ridge protruding from the flange 46a of the push screw 46.

With this configuration, the push screw 46 is rotated, and the screw portion 46b is screwed into the screw hole 45a of the core shaft 45, so that the tapered portion 46 is formed.
The pad 48 is radially expanded by the action of c, and the push screw 46 and the core member 24 are fixed. Thus, the push screw 4
The fixing of the core 6 to the core member 24 can be easily performed by a simple operation, and the pad 48 and the push screw 46 are not easily separated from each other.

FIGS. 12, 13, 14, and 15 are cross-sectional views of an annular pad showing an embodiment of the annular pad. The pad 51 shown in FIG. 12 has a circular cross section, and the pad 52 shown in FIG. The pad 53 shown in FIG. 14 has a rectangular cross section, and the pad 54 shown in FIG. 13 has a rectangular tube cross section. As described above, the pad may have an annular shape, and does not limit the cross-sectional shape.

FIG. 16 is a perspective view of the tapered rings 43 and 47 in the embodiment shown in FIGS. 9, 10 and 11, and the pads 26 and 4 are divided by a plurality in the circumferential direction.
8 has the effect of smoothing the expansion and contraction in the radial direction.

In each of the above embodiments, a rubber ring is exemplified as the fixing member for fixing the web roller core material. However, the present invention is not limited to this. For example, an elastic member which can be expanded and contracted in the radial direction, A spanning ring or the like in which the tapered surfaces are in contact with each other may be used.

In each of the above embodiments, the ink roller is exemplified as the object to be cleaned. However, the present invention is not limited to this, and a printing cylinder such as a rubber cylinder or an impression cylinder may be used. Further, in each of the above embodiments, an example in which a doctor for scraping foreign matter is provided is shown. However, it is not always necessary to provide a doctor, and the foreign matter may be wiped off by directly pressing the web against the peripheral surface of the drum or roller. .

Further, in each of the above embodiments, a screw is exemplified as a means for moving the pressing member in the axial direction of the web roller. However, the present invention is not limited to this. For example, an air cylinder or a rack may be used.

[0047]

As is apparent from the above description, according to the present invention, a cleaning web roller supporting device for a printing press that supports a hollow web roller around which a cleaning web is wound is provided.
A fixing member formed so as to be able to expand and contract in the radial direction and fitted in the inner hole of the web roller, and formed so as to be movable in the axial direction by being engaged with the fixing member and moving the fixing member in the axial direction by the movement; A pressing member that presses to expand the fixing member in the radial direction to fix the web roller and the fixing member, and a support member that supports the web roller on the frame side
Wherein the web roller was fixed to the fixing member
From a direction substantially perpendicular to the axis of the web roller
By having a support member that detachably supports ,
Since the fixing between the web roller and the fixing member is facilitated, the workability is improved, the cleaning time is reduced, and the operation rate of the printing press is improved. Further, since the fixing member of the web roller is located inside the core material for the web roller, the space occupied by the apparatus can be reduced, and the size of the machine can be reduced. Further, the web roller core material does not collapse when the web roller is fixed, and the mounting position of the web roller does not shift. In addition, since there is no restriction on both ends of the web, wrinkles are not formed on both ends of the web, and the quality of the web is improved. Web roller exchange
Exchange becomes easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a winding roller end.

FIG. 2 is a schematic exploded front view showing a winding roller and a supporting member thereof in a partially developed state.

FIG. 3 is a side view of the web cleaning device.

FIG. 4 is a side view of the cleaning unit.

FIG. 5 is a side view of the device frame.

FIG. 6 is a side view of the web cleaning device.

FIG. 7 is a front view of the device frame.

FIG. 8 is a longitudinal sectional view of a winding roller end showing another embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a winding roller end showing another embodiment of the present invention.

FIG. 10 is a longitudinal sectional view of a winding roller end showing another embodiment of the present invention.

11 is a sectional view taken along the line XI-XI in FIG.

FIG. 12 is a sectional view of an annular pad showing an embodiment of the annular pad.

FIG. 13 is a sectional view of an annular pad showing an embodiment of the annular pad.

FIG. 14 is a sectional view of an annular pad showing an embodiment of the annular pad.

FIG. 15 is a sectional view of an annular pad showing an embodiment of the annular pad.

FIG. 16 is a perspective view of a tapered ring according to another embodiment of the present invention shown in FIGS. 9, 10, and 11;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ink roller 3 Web cleaning device 4 Device frame 5 Cleaning unit 21 Supply roller 22 Winding roller 23 Web 24 Core material 24a Inner hole 25 Center shaft 25a Screw hole 26 Pad 29 Push screw 29b Screw portion 40 Push screw 40a Flange 41 Nut 42 Push screw 42b Tapered portion 43 Tapered ring 45 Core shaft 45a Screw hole 46 Push screw 46b Screw portion 46c Tapered portion 47 Tapered ring 48 Pad 51 Pad 52 Pad 53 Pad 54 Pad

Claims (1)

(57) [Scope of request for utility model registration] 1. A cleaning web roller supporting device for a printing press that supports a hollow web roller around which a cleaning web is wound, the cleaning web roller supporting device being formed so as to be able to expand and contract in a radial direction and fitted into an inner hole of the web roller. A fixing member, which is engaged with the fixing member and is formed so as to be movable in the axial direction, and by the movement, presses the fixing member in the axial direction to expand the fixing member in the radial direction, thereby forming the web roller and the fixing member. Pressing member to be fixed and supporting the web roller on the frame side
A support member, wherein the web roller serves as the fixing member.
It is almost perpendicular to the axis of the web roller when fixed
A cleaning web roller support device for a printing press, comprising: a support member that is detachably supported from a direction .