JP2002531305A - Apparatus for alternately cleaning two adjacent cylinders in a printing press with a single cleaner device - Google Patents

Abstract

(57) [Summary] The shoulders (F, F ') of the cleaner device (B, P, T, R1, R2) are arranged between the cylinders to be cleaned and are parallel to the real or virtual axes. It is hingedly mounted on a connecting rod (3, 3 ') which rotates about (A, A', 33) and which are interconnected by torsion means. At least one of the shoulders is provided with a rear wheel (8) which moves in a fixed guide (9) arranged substantially at the same height as the pivot axis and substantially perpendicular thereto. Due to the presence of the guide (9), the cleaner device rotates and pivots simultaneously to act on one of the cylinders to be cleaned or to stand at a distance from the cylinder which is useful as a rest or maintenance position for the apparatus. Means (14, 20, 25, 28) for pivoting the connecting rod are provided so as to also rotate about the axis of movement (A, A ', 33). If there are gripping clamps (Z) or other irregularities on the surface of the torso, the shoulder of the cleaner device should be used to automatically prevent unwanted interference between the cleaner device and the critical area of the torso to be cleaned. At least one of the parts has at least one wheel (22) which can interfere with a cam (D) fixed on the side of the cylinder to be cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a reel-fed or paper-fed rotary printing press with parallel cylinders that need to be cleaned periodically during operation because they get wet with ink and become soiled with pieces of paper.

[0002]

[Prior art]

Known cleaner devices for this purpose include, for example, light alloy bars parallel to the cylinder to be cleaned. The bar is usually fixed, and the surface facing the barrel is usually provided with a straight longitudinal recess, along which a presser with a flexible elastic membrane close to the barrel is guided. You. The bar contains a hydraulic actuator that, in response to a command, presses the presser against the barrel to contact the interposed cloth. The cleaning liquid is sprayed on the cloth from a nozzle mounted on a pedestal that leads to the surface of the bar closest to the cloth. The cleaning cloth is withdrawn from the supply roller and the other end of the cloth is connected to a take-up roller, which, together with its rotating means, rests on a parallel shoulder supporting the bar.

On the other hand, there is also known a cleaner device provided with a brush which is sprayed with a cleaning liquid from a nozzle and comes into contact with a body to be cleaned.

Hereinafter, the term “cleaner device” is used to refer to any device for cleaning the cylinder of a printing press, even if it is different from the above device.

In the prior art, each printing cylinder to be cleaned is usually equipped with a dedicated printing device. This solution is costly and reduces the space available for inspecting the press cylinder. To solve this problem, the cylinders to be cleaned are often close to each other, for example, an impression cylinder and a blanket cylinder, so that one device can be used to alternate one and the other of the two cylinders. Cleaning is also a known practice. For this purpose, the device is mounted on a suitable drive system. A printing machine of the type manufactured by Komori, a Japanese company, has an operating shaft extending in parallel between the two cylinders as described above, so that the cleaner device is moved from one roller to the other. Conventional transfer systems cannot be used to transfer to rollers.

[0006]

[Problems to be solved by the invention]

The present invention provides such a technology by means of a device for moving a cleaner device which is technically reliable, at a standard price and which allows the cleaner device to be quickly and easily detachably mounted from its support means. The purpose is to solve a technical problem.
The device according to the invention also has a printing press with such an operating shaft between the cylinders to be cleaned, which originally does not have such an operating shaft and that the gripping clamp is on one of the cylinders, so that It can also be mounted on a printing press where the device can be usefully used.

[0007]

[Means for Solving the Problems]

The device according to the present invention is characterized in that interference between the cleaner device and the gripping clamp can be automatically prevented. The characteristics of such a device and the advantages derived therefrom will become apparent from the following description of certain preferred embodiments, given purely by way of non-limiting example in the drawings shown in the accompanying drawings.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the drawings, C1 indicates a blanket cylinder, C2 indicates an impression cylinder, C3 indicates a transfer cylinder, and A indicates an operating shaft arranged in parallel between the blanket cylinder C1 and the impression cylinder C2 depending on the device. The device pivots about an axis A, which in a preferred embodiment is a fulcrum. At the end of the shaft A, the large ends of the connecting rods 3, 3 'made of, for example, a suitable material having a low coefficient of friction and aligned with each other are rotatably mounted. An end of a steel half tube 1 is fixed to the connecting rods 3, 3 'coaxially with and not in contact with the axis A. The only function of the half tube is to structurally connect the connecting rods such that when one connecting rod pivots, this pivoting is simultaneously transmitted to the other connecting rod. Rod 3,3
'Can be made of, for example, a bronze alloy plate, etc., and the arc-shaped head pieces 2, 2'
And handle portions 102, 102 '. The fork-like ends of the stems 102, 102 'are mounted on the axis A together with the headpieces 2, 2', the ends of the two parts partially overlapping and being screwed to each other and to the half tube 1. , 4 '. The half tube 1 can be arranged, for example, on the same side of the rod 3, 3 'as the headpiece. Hereinafter, with reference to FIG. 5, a modified example of the connecting rod and the interconnecting means thereof will be described. Reference numerals 5, 5 'denote stop screws fixed vertically to the outer surfaces of the connecting rods 3, 3'. The stop screws 5, 5 '
, 3, 3 'act on the shoulders S, S' of the printing press so that they do not move axially. FIG.
4 to 4 show a cleaner device mounted on the device according to the invention, as an example a bar B carrying a nozzle complex for supporting a presser P and applying a cleaning liquid to a cloth T.
Is provided. The cloth T is pulled out from the roller R1 by a suitable means, wound around the roller R2, and moves around the composites B and P. These rollers and bar B are all mounted on shoulders F, F 'which are hingedly connected to the small ends of connecting rods 3, 3' by pins 6, 6 '. ing. It will be appreciated that any other cleaner device which differs entirely or partially from the cleaner device described above can be mounted on the shoulders F, F '. A protrusion 7 is provided at one of the shoulders F and F ′, for example, at a rear end of the shoulder F, and a wheel 8 that moves in the guide groove 9 is provided on the protrusion 7 side. The guide groove 9 is substantially perpendicular to the axis A and the various surfaces to be cleaned, substantially horizontal or appropriately inclined, and is fixed by a distance piece 110 to the nearest shoulder S of the printing press. It is formed in the plate 10. The plate 10 can be, for example, approximately the same height as the axis A. The composites B, F, F 'can always rotate and rotate about the axis A as needed, with the front face always facing the cylinders C1, C2 and without interfering with the axes (described below). As far as possible, the distance between the imaginary hinge axis formed by the pins 6, 6 'and the nearest point on the outer peripheral surface of the axis A is defined by the imaginary axis and the complex
Must be greater than the distance between the adjacent upper and lower fronts.
In FIG. 4, for example, pins 6, 6 'are combined with springs 12, 12' together with composites F, F '.
, B, B 'can be seen to be axially movable in its stop seat 11, 11' formed in it. The springs 12, 12 'urge the pins outwardly towards the connecting rods 3, 3' so that the narrow ends 106, 106 'of the pins are at the small ends of these connecting rods 3, 3'. Pass through the formed hole. Pressing the pins 6, 6 'into the seats 12, 12' with a sharp tool and moving the cleaner device so that the wheel 8 exits the guide 9 allows the cleaner device to be quickly removed from its support means.
While the narrow end of the pin 6 directly fits into the hole provided in the small end of the connecting rod 3,
The end of the pin 6 'engages the axial gap of a screw 13 fastened to the small end of the rod 3'. The rod end of the double-acting main jack 14 (operated hydraulically or electromechanically) is fixed to the projecting portion of the screw 13. The body of the jack 14 is attached to a pin 15 fixed to a shoulder S ′ of an adjacent printing press, for example, at substantially the same height as the axis A. It can be seen that the pins 6, 6 'can also be moved in the axial direction by means other than the above, for example by using screws for the pins.

The device of the invention is completed by a lever 16 pivoting about a pin 17 fixed below the plate 10 at about the same level as the axis A on the side S of the printing press. The tip of this lever is oriented on the axis A, and its free end is provided with a wheel 18 which is hinged to the rod of a small double-acting auxiliary jack 20 (operated in the same way as the main jack) at an intermediate point 19. Are linked. The body of the jack 20 is hingedly connected to a pin 21 fixed to the shoulder S. When the jack 20 retracts the rod as shown in FIG. 2, the wheel 18 is moved over the projection 10 extending beyond the small end of the connecting rod 3.
3 is outside the trajectory that can be drawn.

The operation of the device described above is straightforward. When the apparatus is in a position to clean the lower torso C2, the connecting rods 3, 3 'are downward, the rod of the main jack 14 is in an extended state, and the bar B is slightly separated from the torso C2. This last condition may be, for example, by the force of the jack 14 or by bringing any part of the device into contact with a suitable stop means, for example by bringing the wheel 8 into contact with the stop 109 of the guide 9 or by connecting the connecting rod 3, 3 'can be secured by abutting a stroke stop (not shown). The required interference between the cloth T pressed by this presser and the cylinder C2 is obtained by the actuator mounted on the bar B and connected to the presser P. To prevent the cleaner cloth from interfering with any of the clamps Z of the cylinder C2, one side of the composites B, P protrudes from the front of the composite by the correct distance to the area of the cylinder C2 with the clamps. A wheel 22 is provided which is acted upon by a cam D of a known type which is fixed laterally. This allows for withdrawal of the complex enough to automatically achieve this non-interference condition.

To bring the apparatus into a state for cleaning the body C1, the main jack 14 is retracted as shown in FIG. The cleaner device goes up, and at the same time the axis A and the axis 6,
Rotate around 6 '. When a sensor (not shown) detects that the jack 14 has reached the end of the retraction stroke, for example, a magnetic sensor that detects the piston position of the jack, the rod of the sub jack 20 is extended. This causes the lever 16 to pivot upward with the wheel 18, the wheel 18 interfering with the projection 103 of the connecting rod 3 and causing the hinge axis of the device to rise above the dead point defined by the leading retraction of the main jack 14. Lift 6,6 '. The main jack 14 is extended at the appropriate time to complete the lifting of the cleaner device and to place the bar B slightly away from the cylinder C1 as shown in FIG. After a short upstroke, the secondary jack 20 can be retracted to return the wheel 18 to the lower standby position. Alternatively, this wheel can remain in an upper position outside the interference trajectory with the projection 103 of the connecting rod 3 (see below). In this case too, the cleaning device is brought by the force of the main jack 14 and any part of the device against a suitable stop means, for example the wheel 8 against the stop end 109 of the guide 9 or is connected. One of the rods abuts against a barrier (not shown) to fix it in the correct position with respect to the cylinder C1 to be cleaned.

If the device is not in use and / or the cleaner device needs to be removed due to maintenance, the device may be in an intermediate position, for example as shown in FIG. 2, and the device may be mechanically locked in this position. Safety measures can be provided for If there are no gripping clamps or other irregularities on the round surface of the cylinder, safety means can also be provided to mechanically lock the cleaner device adjacent to the cylinder to be cleaned. To return the device to the lower position for cleaning the torso C2, the connecting rod 3
, 3 ', the weight of the complex B, P on the connecting rod is sufficient to ensure that the connecting rod passes over the dead center without difficulty, so that the auxiliary jack 20 does not have to be operated and the main jack 14 is extended from the retracted phase. Automatically move to the stage. However, if the weight of the device is insufficient to overcome the friction of the fulcrum and hinge and the device cannot be moved by gravity beyond the position shown in FIG. In some cases, this is maintained in an extended state, and this can be done by means of the retracted secondary jack 20 when the device is in the position of FIG.
It can be seen that it interferes with the projections 103 of the slab from above to below and pushes the complex down below the horizontal dead center.

FIG. 5 shows that in a variant, the connecting rods 3, 3 ′ are identical and made of steel, and the inner diameter curvature of the parts 2, 102, 2 ′, 102 ′ is larger than the radius of the axis A. ,
A rotatable wheel 23 is mounted on these parts of the connecting rod,
The third axis is parallel to the axis A, and it is shown that the wheel 23 is mounted on the axis A so that the connecting rod can pivot with rotational friction. FIG. 5
Has a pair of parallel beams 2 attached to the connecting rod by a pair of screws 4, 4 '.
The connecting rods 3, 3 'can also be connected in another way by means of 4, 24', the screws 4, 4 'also fixing the parts 2, 102, 2', 102 'forming the rod together. It is shown. In another modification shown in FIG.
3 'is pivoted by means different from the jacks 14, 20 described above. A sector gear 25 is fixed outside one of the connecting rods and meshes tangentially with the rack 26. The rack is held on this gear 25 by an idle gear 27 and is attached to a rod of a jack 28. The jack 28 is connected to the shoulder S of the adjacent printing press.
The flange of the support 29 attached at 30 to the plate 10 'attached to the plate. Means (not shown) for operating the jack 28 is provided during an intermediate stroke in which the cleaning bar B is disposed at a position separated from both the cylinders C1 and C2. This is useful in various maintenance operations of the device.

The device according to the invention can also be adapted to a printing machine without the operating axis A described above. In this case, the device can be mounted with such an axis A ′,
Preferably, as shown in FIG. 7, the shaft A 'is mounted on the shoulders S and S' together with the intermediate support 31 having a bearing, and the connecting rods 3 and 3 'of an integral structure are used. This integral connecting rod 3, 3 'is attached to the shaft by a set screw 32 or other suitable means. FIG. 6 shows the configuration of still another modification. In this variant, the connecting rod is mounted on a synchronous axis A 'or, at one end, as shown at 33 in FIG. 6, the shoulder of the printing press, so that the device can rotate about an axis parallel to the roller to be cleaned. Can be hinged to the part. The axes in this case are not physical as in the previous embodiment, but are virtual axes. In this case, means are used for precisely synchronizing the pivoting of the connecting rods 3, 3 '. This is, for example, a synchronous shaft 3 rotatably supported by a connecting rod and having a pinion 35 meshed with a sector gear 36 fitted to an end thereof.
4 can be performed. The sector gear 36 is coaxial with the rotation shaft 33 and is fixed to shoulders S and S ′ of the printing press. Reference numeral 37 denotes one of jacks for operating the connecting rod. In the embodiment shown in FIG. 6, the shaft 34 is fixed to the side surfaces F and F ′ of the cleaner device, and when the sector gear 36 has external teeth as shown by solid lines, while the connecting rod pivots, The cleaner device rotates with its work surface on the track 38. This trajectory is opposite to the trajectory of the previous embodiment. Sector gear 36
If the 'has internal teeth as shown by the dashed line in the same FIG. 6, the cleaner device can be rotated on the same track as the previous embodiment. It will be appreciated that the frame F, F ', B of the device is a rigid part, so that the interconnection by the shaft 34 can be performed by these parts alone.

It is understood that the scope of the present invention includes other methods for rotating the cleaner device about an imaginary axis parallel to the cylinder to be cleaned. This includes, for example, rotatably supporting the same cleaner device at both ends with a carriage having wheels moving on a fixed arcuate guide whose center of curvature is on the same imaginary axis.

[Brief description of the drawings]

FIG. 1 is a side view of the device of the present invention, showing a lower cylinder cleaning position.

FIG. 2 is a side view of the device of the present invention, showing an intermediate position.

FIG. 3 is a side view of the device of the present invention, showing an upper cylinder cleaning position.

FIG. 4 shows another detail of the device according to the invention in a partial sectional view along the line IV-IV in FIG. 2;

FIG. 5 is a side view showing a modified example of the present invention.

FIG. 6 is a side view showing a modification of the present invention.

FIG. 7 is a perspective view showing a modified example of the present invention.

────────────────────────────────────────────────── There is at least one wheel (22) that can interfere with (D).

Claims (18)

[Claims] 1. A pair of shoulders which are arranged, for example, inside a shoulder (S, S ') of a printing press at a slight distance from said two adjacent cylinders (C1, C2) of the printing press. Of a suitable type of cleaning device (R1, R2, B, P,
T) an apparatus for alternately cleaning according to a command, the apparatus comprising, in response to a command, a real or virtual axis (A, A ') parallel to and between the cylinders to be cleaned.
A cleaner device support means (3, 3 ') capable of rotating or pivoting the cleaner device about a longitudinal axis of the device itself, which at the same time passes through the connection point of said support means Means for rotational or pivotal movement about the lower surface (C2)
) To a position where the work surface is facing the upper torso (C1), or vice versa, from a standby position in line with any of the above-mentioned torso, or from a rest or maintenance intermediate position. An apparatus characterized in that: 2. An outer surface of the shoulder (F, F ') of the cleaner device is hingedly connected to a parallel connecting rod (3, 3').
, 3 ') pivot about a real or imaginary axis (A, A') parallel to and between the cylinders (C1, C2) to be cleaned, And means for rotating the cleaner device about the support hinges (6, 6 ') by means of said connecting rod, whereby the cleaner device cleans its working surface. 2. The device according to claim 1, wherein the device is aimed at the cylinder to be locked or the device itself is locked in an intermediate position for rest or maintenance. 3. The connecting rod (3, 3 ') uses as its pivot axis an axis (A) parallel to and between the cylinders to be cleaned, said axis being operative and printing. The connecting rod may be internal to the machine or added, for example, by being attached to the shoulder of a printing press, wherein the connecting rod is rotatably mounted on the shaft and the rods are held together in the pivoting operation. Device according to claim 1, characterized in that they are interconnected by torsion means (1, 24) for moving the torsion. 4. The connecting rods (3, 3 ') are each pivoted (A, A').
) Surrounding at least two parts (2, 102, 2 ', 1) for a collar type assembly
02 ′), and the two connecting rod pieces are fixed to each other by screws (ネ ジ) so that the connecting rods can be used to fix the ends of the torsion means (1, 24). Device according to claim 3, characterized in that 4,4 ') are preferred. 5. The connecting rod (3, 3 ′) is made of a material having a low coefficient of friction,
Device according to claim 3, characterized in that it pivots in contact with said shaft (A). 6. An intermediate wheel (23), wherein said connecting rod (3, 3 ') is made of steel and is rotatably fixed to one side of said connecting rod and projects therefrom.
The apparatus according to claim 2, wherein the apparatus is rotatably mounted on the shaft (A). 7. The torsion means for connecting the connecting rods (3, 3 '),
The device according to claim 3, comprising a half tube (1) arranged parallel to and coaxial with the axis (A) about which the connecting rod is pivoted. 8. The torsion means for connecting the connecting rods (3, 3 '),
The device according to claim 2, comprising a single beam or a pair of beams (24) parallel to the connecting rod support axis (A). 9. If the printing press does not have an operating shaft (A) between the cylinders to be cleaned, such a shaft (A ') which fixes the connecting rod (3, 3') of the device. )
In order to rotatably support both ends of the printing press, a support (31) is provided at the shoulder (S, S ') of the printing press.
3. The device according to claim 2, wherein the device is mounted on a device. 10. At least one of said shoulders (F) of the cleaner device (B, P, T, R1, R2) carries a wheel (8) at the rear and at the side, said wheel comprising: Guide grooves (9) which are arranged at substantially the same height as the supporting shaft (A, A ') and are substantially perpendicular to this shaft and are formed, for example, in a plate fixed to the adjacent shoulder (S) of the printing press. ), The overall arrangement is such that as the connecting rods (3, 3 ') supporting the cleaner device pivot, the cleaner device is moved from a position perpendicular to one barrel to be cleaned to the other to be cleaned. 2. The device according to claim 1, wherein the device is adapted to move to a position perpendicular to the torso by a pivoting movement also about the rear wheel. 11. A printing press having a shoulder (S ') opposite to a shoulder carrying a plate (10) having a guide groove (9), for example a shaft arranged between cylinders to be cleaned.
A, A ') is hingedly mounted with a main jack body (14) substantially at the same height as the main jack body, which is operated with pressurized fluid or electromechanically and is double-acting. To maintain the device in a working position aligned with the lower torso (C2) or with the upper torso (C1), the rod of the jack is the same as one side of the cleaner device is hingedly mounted. The small end of the adjacent connecting rod (3 ') is hingedly attached to the small end of the opposite connecting rod (3'), and the small end of the opposite connecting rod (3) is hingedly attached to the cleaner device with the shaft (6). ), The projections (103) are provided so that when the rod of the jack (14) is retracted in a state where the cleaner device is substantially equidistant from the trunks (C1, C2), the projections become The wheel (18) at the end of the lever (16) follows Disposed on the track to obtain, the lever is a shoulder portion of the printing machine (S)
The rod of the second jack (20), which is pivoted on and is normally retracted, is hinged (
19), said second jack being activated when raising the cleaner device from said position equidistant from the torso to act on the upper torso (C1);
This action allows the lever (18) to interfere with the protrusion (103) at the end of the connecting rod (3) and raise it beyond the dead center,
11. The device according to claim 10, wherein the main jack acts synchronously to press the cleaner device towards the upper torso. 12. Even when moving the cleaner device from the upper to the lower torso, the dead center created by actuating the main jack, for example to overcome any friction at the pivot point of the device. Device according to claim 11, characterized in that the second jack (20) can be actively used for moving the device over. 13. The connecting rod (3, 3 ') is pivoted by a rack-pinion system (25, 26) acting on one of said connecting rods, said rack being actuated by a double-acting jack (28). 3. The device according to claim 2, characterized in that: 14. The connecting rod is hingedly mounted on a pivot (33) rotatably supported on adjacent shoulders (S, S ′) of the printing press,
Aligned on a common virtual axis parallel to the torso to be cleaned, the shoulder of the cleaner device (
F, F ') are fixed to an axis (34) parallel to said virtual axis, said axis (34) being rotatably supported by connecting rods (3, 3') and having an end. Equivalent to a fixed pinion of the same diameter (35) or a fixed toothed ring (36.36 ') coaxial with said imaginary axis, directly or indirectly engaging by active drive. So that the connecting rods (3, 3 ') are jacked (
3. The pivoting device according to claim 3, wherein the cleaner device rotates with or without crossing the imaginary axis in order to assume the required vertical position with respect to the cylinder to be cleaned. Equipment. 15. The cleaning device stops at a position where the cleaning device does not interfere with the body.
Means for stopping the connecting rod (3, 3 ') which is rotating when the cleaning device is in line with one of the cylinders to be cleaned;
, T) is pressed by its own means. 16. In the front of the device, a shoulder (F, F) of the cleaner device is provided.
') On one side there is a wheel (22) which has a gripping clamp (Z) on one side of the cylinder to be cleaned (C2), for example a cam of a known type mounted on the side of the impression cylinder (C2). D) can be actuated so that if the cleaner device is likely to interfere with the clamp, the cylinder can be automatically separated from the cleaner device to prevent interference, and after passing through the clamp, the device is connected. 2. The device according to claim 1, wherein the cleaning device automatically returns to the working position on the to-be-cleaned cylinder by the elastic action of the pivoting means of the rod (3, 3 '). 17. When the connecting rod (3, 3 ′) is rotatably mounted on a support shaft (A), in order to prevent the device from moving in the axial direction,
4. The device according to claim 3, wherein adjustable stops are provided on the outer sides of these connecting rods, preferably acting on adjacent shoulders (S, S ') of the printing press. 18. The shoulder (F, F ′) of the cleaner device is hingedly connected to a connecting rod (3, 3 ′) so that the cleaner device can be quickly and easily attached and detached from its support means. 3. The device according to claim 2, wherein the mounting pins (6, 6 ') are removably mounted on the shoulder.