JPH04135339U - Printing press impression cylinder cleaning device - Google Patents

Abstract

(57) [Summary] [Purpose] The object is to provide an impression cylinder cleaning device that makes it possible to easily adjust the landing timing of the pad. [Configuration] A pair of left and right levers 3 fixed to the support shaft 2,
A pad 1 is pressed against the circumferential surface of the impression cylinder 1 via a cleaning cloth 10.
A cleaning unit 6 equipped with a cleaning unit 6 is supported so as to be swingable around a pin 4. The eccentric tip 31b of the eccentric shaft 31 with the shaft support 31c supported by the lever 3 was fitted into the long groove 7b provided in the device frame 7 of the cleaning unit 6. In this way, when the eccentric shaft 31 is rotated, the cleaning unit 6 swings due to the eccentric action, and the landing timing of the pad 16 changes.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to an impression cylinder cleaning device for a printing press that cleans the surrounding surface of the impression cylinder while rotating it. It is something to do.

0002

[Conventional technology]

At the end of the printing process, the circumferential surface of the impression cylinder will be dirty with ink and paper dust, so please do not For this purpose, the printing units of printing presses have traditionally been equipped with An impression cylinder cleaning device, which will be explained briefly, is attached. In other words, this type of The impression cylinder cleaning device is installed near the circumferential surface of the impression cylinder, and the a frame, and a winding rotatably supported by the device frame and extending in the axial direction of the impression cylinder. The return roller, the take-up roller, and the device frame located between these rollers. and a pad made of elastic material supported on the arm side. And the rewind roller For example, a cleaning cloth is wrapped around the belt, which is formed into a long belt with approximately the same width. The cleaning cloth is rewound and attached to the surface of the pad, and then unwound. Wrapped around the scraping roller.

0003 During the cleaning process, the impression cylinder was removed from the peripheral surface of the impression cylinder during the printing process. The entire cleaning device (hereinafter referred to as the cleaning unit) is moved and the pad is placed on the impression cylinder through the cleaning cloth. When the take-up roller is rotated while the impression cylinder is rotated, the cleaning The cleaning cloth is rewound from the rewind roller and taken up by the take-up roller, and the cleaning As the cloth is pressed against the impression cylinder surface by the pad while it is running, it will not adhere to the impression cylinder surface. Foreign matter is wiped off with a cleaning cloth, and when the cleaning cloth becomes dirty due to foreign matter adhering to it, it is removed. At the same time, the pad is supplied with fresh cleaning cloth rewound from the unwinding roller. In this case, in conventional equipment, the take-up roller is generally driven by an air cylinder. It rotates intermittently. Furthermore, in this type of impression cylinder cleaning device, from the circumferential surface of the impression cylinder, Make sure that the protruding gripping claw device (hereinafter referred to as the claw) does not interfere with the pad. In other words, a cam is installed at the end of the impression cylinder, and the cam is activated only when the pawl passes through the pad due to the rotation of the impression cylinder. Equipped with a claw dodging mechanism that allows the entire cleaning unit to escape from the claw using a cam. There is. In this case, the cleaning unit should be released slightly before the nail passes through the pad, so that the nail can The cleaning unit can be returned to the pad landing state shortly after passing through the pad. However, if the pad lands too early, the pad and the nail will interfere, and the pad will not land properly. If the ground timing is too slow, unwashed residue will occur, so the rotation of the impression cylinder for nail dodging will be delayed. It is necessary to adjust the landing timing so that there is no excess or deficiency in the rotation angle.

0004

[Problem that the idea aims to solve]

However, the pad landing timing adjustment device in conventional impression cylinder cleaning equipment The cam, which is located inside the machine frame and fixed to the end face of the impression cylinder, is connected to the circle of the impression cylinder. A narrow space between the end face of the impression cylinder and the machine frame that moves in the circumferential direction. If you loosen the cam fixing bolt inside the car and move the cam, tighten the fixing bolt. Therefore, there is a problem that the work is difficult and requires a long time and a lot of effort.

[0005] This invention was created in consideration of the above points, and it is based on the adjustment of the landing timing of the pad. The purpose of this invention is to provide an impression cylinder cleaning device for a printing press that makes it possible to easily perform ing.

[0006]

[Means to solve the problem]

In order to achieve this purpose, the present invention uses a rotating impression cylinder attached to the pad. It has a band-shaped body that is pressed against the circumferential surface and moves in the circumferential direction of the impression cylinder, and swings on the support member on the machine base side. When the freely supported cleaning unit and the gripper device on the impression cylinder side pass through the pad, When cleaning, shake the cleaning unit so that the pad moves back and forth in the direction of distance from the circumference of the impression cylinder. An impression cylinder cleaning device for a printing press equipped with a claw dodging mechanism that moves the gripper to escape from the gripping claw device. , a rotation operation in which the cleaning unit side and the support member side are rotatably engaged with each other. A possible pin and a pin receiving part are provided, and the axis of the pin rotation support part, the pin and the pin receiving part are The axial center of the engaging part and the engaging part are made eccentric with respect to each other.

[0007]

[Effect] The cleaning unit, which had been removed from the impression cylinder surface during printing, is swung together with the support member. When the pad is pressed against the circumferential surface of the impression cylinder and the impression cylinder is rotated, the nail dodging position is In other cases, foreign matter on the circumferential surface of the impression cylinder is wiped off with a band-shaped body pressed against the impression cylinder. Claw dodge position In this case, the cleaning unit escapes from the circumferential surface of the impression cylinder together with the support member to avoid the claws. Pads and nails do not interfere. The timing of the pad landing on the impression cylinder surface is too early. If it is too slow, rotate the pin to separate the pin from the pin receiver. so that the cleaning unit that is engaged moves in the circumferential direction of the impression cylinder due to the eccentric action of the pin. Since the pad swings, the landing timing of the pad is adjusted.

[0008]

【Example】

1 to 3 show an embodiment of an impression cylinder cleaning device for a printing press according to the present invention, and FIG. Figure 2 is a side view of the vicinity of the cleaning unit showing the present invention before adjusting the landing timing. A side view of the vicinity of the cleaning unit after adjusting the landing timing. Figure 3 shows the landing tie. FIG. 3 is an exploded front view of the timing adjustment section. In these diagrams, a pair of left and right machine frames are shown. The motor (not shown) is driven from the driving side and rotates in the direction indicated by symbol A in the figure. A cylinder 1 is rotatably supported at both ends, and an impression cylinder 1 is provided near the circumferential surface of the impression cylinder 1. A support shaft 2 extending in the axial direction is rotatably connected to the machine frame via bearings at both ends. It is pivoted. At both ends of the support shaft 2, there are supports that support a cleaning unit 6, which will be described later. A pair of left and right levers 3, which serve as holding members, are fastened and fixed close to the machine frame. A support pin 4 is provided in the pin hole 3a bored at the upper end corner of each lever 3. is inserted so that it can move forward and backward, and is fixed with a fixing screw 5. Cleaning indicated by 6 as a whole In the unit, the pin 4 is inserted into the pin 4 by fitting the hole 7a into the protrusion of the pin 4 from the lever 3. It is equipped with a pair of left and right device frames 7 that are swingably supported. The free end portion of is supported by an adjustment device 30, which will be described later. And these left and right outfits The mounting frame 7 includes a U-shaped bearing 8 and a removable holding plate 9 that closes the opening. is bolted. In the bearing part formed by such a bearing 8 and the holding plate 9, is an unwinding cloth 10 wound with a cleaning cloth 10 in the form of a strip having a width approximately the same as that of the impression cylinder 1. Both ends of the roller 11 are rotatably supported, and by removing the presser plate 9, An empty rewinding roller 11 and a rewinding roller 11 fully wrapped with cleaning cloth 10 It is configured so that it can be exchanged.

[0009] It is located below the rewind roller 11 and is bolted to the left and right device frames 7. An end shaft 13 that is driven by a rotation device to be described later and rotates intermittently is supported by the bearing 12. The grooves formed in the left and right bearings 12 are arranged in the axial direction of the rewinding roller 11. The protrusions at both ends of the winding roller 14 extending from the winding roller 14 are engaged, and the end shaft 13 and winding The roller 14 is configured to rotate integrally with the roller 14. On the other hand, the left and right device frames A support located at the end of the impression cylinder 1 side of the arm 7 and supported between the left and right device frames 7. The bar 15 has a pad made of an elastic material such as rubber and having approximately the same length as the support bar 15. The card 16 is fixed and is rewound from the rewind roller 11 to the take-up roller. The cleaning cloth 10 wound around the pad 14 runs attached to this pad 16. It is configured. Then, the pad 16 is brought into contact with the circumferential surface of the impression cylinder 1 via the cleaning cloth 10. As the impression cylinder 1 rotates in this state, ink and paper powder adhering to the circumferential surface of the impression cylinder 1 are removed. The foreign matter such as 10 are supplied one after another.

0010 The end of the impression cylinder 1 has a peak at one location on the outer periphery and rotates integrally with the impression cylinder 1. A disc-shaped cam is fixed, and a cam follower is placed in contact with the cam surface of this cam. The lever to which the A is pivotally attached and the support shaft 2 are connected by a link mechanism. like this By doing so, the impression cylinder 1 rotates, and the peripheral surface of the impression cylinder 1 is When a gripping claw device 17 (hereinafter referred to as claw 17) protruding from the pad 16 faces the pad 16, When the cam follower passes over the peak of the cam, the support shaft 2 is moved through the lever and link mechanism. It is configured to reciprocate in forward and reverse directions by a predetermined angle. And support shaft 2 Due to the reciprocating rotation of the lever 3 fixed to the lever 3 and the cleaning unit 6, After the pad 16 moves back and forth in the forward and reverse directions and escapes from the claw, the pad 16 returns to its original position. The device is configured so that a so-called nail dodging motion is performed in which the roller moves and lands on the circumferential surface of the impression cylinder 1. Ru. The support shaft 2 is also rotated by a separately provided drive device, and the support shaft 2 is rotated by a separately provided drive device. The bar 3 and the cleaning unit 6 are removed from the circumferential surface of the impression cylinder 1 to be in an unused state. It is composed of

[0011] Therefore, the rotation device for the take-up roller 14 will be explained. with grooves and protrusions The device frame 7 of the end shaft 13 rotates integrally with the take-up roller 14 through engagement. A lever 18 is provided on the protruding portions of the cleaning cloth 10 to control the winding roller 14 to wind up the cleaning cloth 10. It is fitted via a one-way clutch 19 that allows rotation only in the direction of the lever 18. Between the spring hook 20 provided on the device frame 7 and the spring hook 21 provided on the The lever 1 applies rotational force in the direction of bringing the free end into contact with the pin 22 protruding from the base frame. A tension spring 23 attached to 8 is stretched. By doing this, the cleaning unit When the knit 6 moves from the claw dodging position to the washing position, the free end touches the pin 22. The lever 18 that is in contact with the The winding roller 14 is rotated via the one-way clutch 19 to remove the cleaning cloth 1. 1 is wound up intermittently.

0012 Furthermore, this device is provided with an adjustment device that adjusts the landing timing of the pad 16. Therefore, this adjustment device will be explained below. The adjustment device 30 It is equipped with an eccentric shaft 31 as a pin rotatably fitted into the pin hole 3b of No. 3, This eccentric shaft 31 is prevented from moving in the axial direction by its collar 31a and snap ring 32. regulated. Further, on the circumferential surface of the collar 31a, there is a hardware for rotating the eccentric shaft 31. The handle 33 is fixed. The tip end 31b of this eccentric shaft 31 is It is fitted into a long groove 7b as a pin receiving part provided in the frame 7. 7b and the axis of the shaft support 31c that fits with the pin hole 3b. The core is offset by an amount indicated by the symbol t in the figure. By doing this, handle 3 3 and rotate the eccentric shaft 31, the tip 31b rotates eccentrically, and The cleaning unit 6, in which the end portion 31b and the long groove 7b of the device frame 7 are fitted, is attached to the pin 4. Since the pad 16 swings around the center, the pad 16 moves in the circumferential direction of the impression cylinder 1, and the pad 1 The landing timing of No. 6 is adjusted. 34 is engraved on the tsuba 31a The landing timing can be determined by matching the scale 34 and the pointer 35. The adjustment position is displayed. 36, the eccentric shaft 31 is rotated after adjustment. It is a bolt that is fixed so that it does not move, and is threaded so as to engage with the annular groove of the eccentric shaft 31. is included.

[0013] The operation of the impression cylinder cleaning device configured as above will be explained. Pressure between printing jobs When cleaning the cylinder 1, rotating the support shaft 2 with the drive device reduces the pressure during printing. The cleaning unit 6, which had been removed from the circumferential surface of the body 1, rotates and removes the cleaning cloth through the pad 16. 10 is in contact with the circumferential surface of the impression cylinder 1, so when the impression cylinder 1 is rotated, it is attached to the circumferential surface of the impression cylinder 1. Foreign matter such as ink and paper powder that has adhered to the cleaning cloth 10 is wiped off with the cleaning cloth 10. Then, impression cylinder 1 As it rotates further, the camfoil will be moved slightly before the claw 17 of the impression cylinder 1 corresponds to the pad 16. The lower part rises to the top of the cam and the support shaft 2 rotates via the link mechanism, so the lever 3 and the entire cleaning unit 6 are separated from the peripheral surface of the impression cylinder 1 and escape from the claws 17. pressure When the barrel 2 rotates further and the cam follower passes the peak of the cam, the link mechanism As the support shaft 2 rotates, the lever 3 and the entire cleaning unit 6 rotate to remove the pad 1. 6 lands on the circumferential surface of the impression cylinder 1, the nail dodging operation is completed, and the cleaning operation begins. stop When the cleaning unit 6 moves from the pawl avoidance position to the cleaning position, the free end is The lever 18 that is in contact with the spring 22 resists the tensile force of the tension spring 23 and moves in the opposite direction as shown in the figure. It rotates clockwise, and the take-up roller 14 rotates via the one-way clutch 19. The cleaning cloth 10 with foreign matter attached thereto is intermittently wound up, and the wound cloth 10 is wound around the impression cylinder 1. New cleaning cloths 10 rewound from the return roller 11 come into contact with each other one after another. In addition, washing When the cloth 10 is wound up, it travels in the opposite direction to the direction around the circumferential surface of the impression cylinder 1. Foreign matter is also wiped off at this time. Then, the cleaning unit 6 moves away from the cleaning position. When moving to the lower position, the lever 18 is moved by the tensile force of the tension spring 23. However, there is one side between the take-up roller 14 and the end shaft 13. Since the opposite clutch 19 is interposed, the take-up roller 14 does not rotate. Roll When the cleaning cloth 10 wrapped around the return roller 11 is used up, remove the presser plate 9. Then, replace it with a rewind roller fully wrapped with cleaning cloth 10.

[0014] For example, as shown in FIG. The gap T between the pad 16 and the claw 17 of the impression cylinder 1 is too large, resulting in unwashed residue. If possible, after loosening the fixing bolt 36, remove the hanger lying on the support shaft 2 side. If you grip the dollar 33 and rotate the eccentric shaft 31 clockwise as shown in FIG. The tip 31b of the shaft 31 eccentrically rotates within the long groove 7b, and the cleaning unit 6 removes the pin 4. Since it rotates around the center in the circumferential direction of the impression cylinder 1, the gap T is small as shown in Figure 2. This will remove any unwashed residue. Also, if the gap T becomes too small, If the door 16 and the pawl 17 interfere, rotate the eccentric shaft 31 counterclockwise in the figure. This can be resolved by doing this. When adjusting the landing timing in this way, If you make the adjustment while checking the sign of the scale 34 and the pointer 35, it will serve as a guide for the adjustment. Adjustments are made quickly and accurately. After adjustment, tighten the fixing bolt 36 and tighten the eccentric shaft 31. Fix it.

[0015] In addition, although the cleaning cloth 10 is illustrated as a belt-shaped body in this embodiment, the cleaning cloth 10 is A cleaning body made of paper may also be used. In addition, in this embodiment, the eccentric shaft 31 is placed on the lever 3 side. Although the example in which the long groove 7b is provided on the cleaning unit 6 side is shown, this can be reversed to create an eccentric The shaft 31 may be provided on the cleaning unit 6 side, and the long groove 7b may be provided on the lever 3 side. Sara In this embodiment, an example is shown in which one end of the long groove 7b is opened, but the eccentric shaft 31 If it is formed so that it can move forward and backward in the axial direction, it can be made into a blind long hole without opening the long groove 7b. It's okay. Also, these long grooves and long holes do not have to be directly drilled into the device frame 7. In addition, the pin receiving member having long grooves, long holes, semicircular holes, etc. is provided separately from the device frame 7. It may also be provided in the device frame 7 and fixed to the device frame 7. Furthermore, in each of the above examples A pin 4, which is the center of rotation of the cleaning unit 6, is provided at the position of the eccentric shaft 31 in the An eccentric shaft 31 may be provided at the position of the pin 4 in the embodiment.

[0016]

[Effect of the idea]

As is clear from the above explanation, according to the present invention, the impression cylinder cleaning device of the printing press a cleaning unit having a pad to which a cleaning strip is attached; An eccentric pin and a pin receiving portion that engage with each other are respectively mounted on the supporting member that is currently supported. By rotating the eccentric pin, it is possible to prevent the padding on the impression cylinder surface when dodging the nail. By adjusting the landing timing of the card, it is possible to use the cover in a narrow work space. The adjustment time is shortened compared to the conventional method in which the machine was adjusted by rotating, and the operating rate of the machine is improved. Ru. In addition, adjustments can be made easily and reliably, reducing labor and Eliminates unwashed residue and damage to nails, pads, etc.

[Brief explanation of drawings]

FIG. 1 is a side view of the vicinity of a cleaning unit shown in a state before landing timing adjustment.

FIG. 2 is a side view of the cleaning unit and its vicinity, shown after the landing timing has been adjusted.

FIG. 3 is an exploded front view of the landing timing adjustment section.

[Explanation of symbols]

1 Impression cylinder 2 Support shaft 3 Lever 4 pins 6 Cleaning unit 7 Equipment frame 7b long groove 10 Cleaning cloth 16 Pad 17 Grip claw device 30 Adjustment device 31 Eccentric shaft 31b Tip 31c axis support t Eccentricity between the shaft center and the tip

Claims (1)

[Scope of utility model registration request] 1. A cleaning unit comprising a band attached to a pad, pressed against the circumferential surface of a rotary impression cylinder, and movable in the circumferential direction of the impression cylinder, and swingably supported by a support member on the machine base side. a claw dodging mechanism that swings the cleaning unit so that the pad reciprocates in a direction toward and away from the circumferential surface of the impression cylinder when the gripping claw device on the impression cylinder side passes the pad to escape from the gripping claw device; An impression cylinder cleaning device for a printing press comprising: a rotatably operable pin and a pin receiving portion provided on the cleaning unit side and the support member side respectively and rotatably engaged with each other; An impression cylinder cleaning device for a printing press, characterized in that the axis of the support part and the axis of the engagement part with the pin receiving part are eccentric to each other.