JPH0647724Y2 - Roller attachment / detachment device for rotary printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a roller attachment / detachment in which a roller for adhering printing ink is brought into contact with or separated from the surface of a printing plate mounted on a plate cylinder in a rotary printing press. It relates to the device.

[Conventional technology]

The rotary printing machine includes a plate cylinder having a plate mounted on its peripheral surface, and a plurality of receiving rollers, which are the most downstream rollers of the inking device, are supported on the surface of the plate by a swingable roller arm. The ink, which is in contact with each other and is stored in the ink fountain of the inking device, is uniformly kneaded in each direction by being transferred between a large number of roller groups, and then is supplied to the plate surface by the fusing roller. Further, a roller attaching / detaching device is attached to this kind of receiving roller so as to interlock with the operation and stop of the printing machine, or to manually bring these receiving rollers into contact with or separate from the plate surface. ing.

5 to 7 show a conventional roller attaching / detaching device of this kind, FIG. 5 is a developed vertical sectional view thereof, FIG. 6 is a side view seen from the outside of the frame, and FIG. 7 is seen from the inside of the frame. It is a side view. In these drawings, a plate body 2 having a plate mounted on the peripheral surface is provided on the left and right frames 1 of the printing unit.
And a blanket cylinder 3 around which a bracket is wound are rotatably supported by eccentric bearings. In FIG. 6, the shaft center of the blanket cylinder 3 is shown by the symbol F, and the rotating shaft center of the eccentric bearing which is eccentric to this is shown by the symbol F ₁ . A stop shaft 4 is axially supported between the left and right frames 1 and is connected to the eccentric bearing of the blanket cylinder 3 by a link (not shown), and is electrically connected to the paper feeding device. It is configured such that the blanket cylinder 3 is attached to and detached from the plate cylinder 2 via an eccentric bearing by rotating in the forward and reverse directions by a predetermined angle in association with the operation and stop of the sheet feeding device. Reference numeral 5 denotes a pair of swing rollers which are located above the plate cylinder 2 and are axially supported between the left and right frames 1. Both ends of the swing rollers are swingable rollers, which are illustrated in a linear form. Arms 6 and 7 are respectively supported, and at the tip of each roller arm 6 and 7, the attachment roller 8 is attached.
Is pivotally supported. And each wearing roller 8 is a roller arm
It is attached to and detached from the surface of the plate with the swinging of 6,7.
It is performed by applying a turning force to 7, and in the releasing direction is performed manually and automatically by a roller attaching / detaching device described below.

That is, a pair of studs 9 projecting from the operation-side frame 1 has a bearing plate 10 formed in a triangular shape centered and supported by a centering device 11, and the bearing plate 10 has a circular shape. The columnar bearing 12 has a bolt 13 that is engaged with the notch.
Is pivotally supported by being rotated by a predetermined angle or more in both directions, and is mounted in the vicinity of the rotary biting portions of the two bodies 2, 3.
A roller raising shaft 14 concentric with the bearing 12 is rotatably supported between the left and right frames 1, and the tip end of the roller raising shaft 14 has a tip shaft hole 12a of the bearing 12. It is rotatably fitted in. Further, the roller raising shaft 14 is provided with a long groove 15 penetrating in the diametrical direction and a shaft hole 16 bored in the axial direction from the shaft end through the long groove 15 to form the shaft hole 16 and the bearing 12.
A shifter shaft 17 is slidably supported in a shaft hole 12b penetrating the shaft core of the. Reference numeral 18 denotes a handle pivotally mounted at one end in a long hole 12c penetrating the bearing 12 in the diameter direction and swingably disposed, and is engaged with a shifter shaft 17 and the shifter shaft 17 has the above-mentioned handle. A rectangular plate-shaped clutch layer 19 is engaged with the long groove 15 and screwed to the portion corresponding to the long groove 15. Further, clutch teeth 21 and 22 are provided so as to face the end surface of the bearing 12 close to the clutch lever 19 and the boss end surface of the lever 20 fitted to the roller raising shaft 14, and the handle 18
5 is in the position shown in FIG. 5, the clutch lever 19 meshes only with the clutch teeth 21, and when the handle 18 is tilted to the right from the position shown in FIG.
It is configured to mesh with both 21,22. On the other hand, two swing ends of the roller lifting lever 23 fixed to the projecting end of the stop shaft 4 and two rods 24 at the lever 20 are connected to the rod 24.
When the clutch lever 19 is engaged with the clutch teeth 22, the stop shaft 4 rotates in the forward and reverse directions by a predetermined angle, and in conjunction with this, the roller raising shaft is linked.
14 is configured to rotate by a predetermined angle. Further, when the clutch lever 19 is engaged only with the clutch teeth 21 and the handle 18 is gripped to rotate the bearing 12,
The roller raising shaft 14 rotates by a predetermined angle. 25 is a click mechanism for fixing the rotation of the bearing 12 at two places.
Reference numeral a is a click mechanism for fixing the movement of the shifter shaft 17 in the axial direction at two positions.

Further, as shown in FIG. 7, a pair of cam levers 26 are fixed to both ends of the roller raising shaft 14 extending to the inside of the frame 1, and are planted from the frame 1 in the vicinity of both outer peripheral ends of the plate cylinder 2. On the provided stud 27, there is provided a roller raising cam 28 formed in an arc shape along the outer peripheral portion of the plate cylinder 2 and provided with roller raising surfaces 28a, 28b, 28c, 28d corresponding to the respective attaching rollers 8 on the outer peripheral portion. A roller 29, which is rotatably supported and pivotally attached to its free end, is in contact with the side surface of the cam lever 26. The roller lifting cam 28 presses the roller 29 against the side surface of the cam lever 26 by its own weight.

With the above configuration, when the handle 18 is tilted from the position shown in FIG. 5 to the right in the drawing, the clutch lever 19 meshes with the clutch shaft 22 and the device moves to the automatic side. It has been switched, and the attachment and detachment of the wearing roller 8 is done by the blanket cylinder 3
It is performed in conjunction with the attachment / detachment operation of. That is, when the roller raising cam 28 and the cam lever 26 are in the position shown by the solid line in FIG. 7 and the feeding roller 8 is in contact with the plate surface, the feeding is stopped due to a feeding failure or the completion of the printing operation. When done,
At the same time as the stopper shaft 4 rotates clockwise in FIG. 6 and the blanket cylinder 3 is released, the roller lifting lever 23 and the rod 2 are released.
4, the roller raising shaft 14 rotates in the counterclockwise direction in FIG. 7 via the lever 20, the clutch teeth 22, and the clutch lever 19, so that the cam lever 26 pushes the roller 29 against the elastic force of the spring member. The roller raising cam 28 is moved to the position indicated by the chain line, and all the receiving rollers 8 are always separated from the plate surface to be in the released state. When the printing operation is restarted, the stop shaft 4 rotates counterclockwise in FIG. 6 to rotate the roller raising cam 28 to the solid line position by the above path, so that the attaching roller 8 causes the roller arm 6 formed of a spring member. By the rotation of 7 and 7, it comes into contact with the printing plate and becomes worn.

Next, when the handle 18 is tilted to the position shown in FIG. 5,
The shifter shaft 17 moves and is locked by the click mechanism 25, the mesh between the clutch lever 19 and the clutch teeth 22 is released, and the present apparatus is switched from automatic to manual. And, for example, the wearing roller 8
When the handle 18 is in the worn state and is pushed from the front side in FIG. 5 toward the paper back side, the bearing 12 and the shifter shaft 14 are locked by the click mechanism 25 in FIG. Since it rotates counterclockwise in FIG. 7, the cam lever 26 pushes up the roller 29 to bring the receiving roller 8 into the released state. Further, when the handle 18 is grasped and pulled toward the front side in FIG. 5, the attaching roller 8 is similarly changed from the detached state to the attached state.

[Problems to be solved by the invention]

However, in the conventional roller attaching / detaching device configured as described above, not only the structure is complicated and the number of parts is large and it is not possible to provide this at low cost, but also the switching between the manual and automatic is made by the clutch lever 19 and the clutch teeth 21, Since it is configured to be performed by switching to and from 22, the clutch teeth 21,22
It is necessary to check the engagement with the hand by hand, and there is a problem that the operability is extremely poor and the engagement is uncertain, and a malfunction is likely to occur.

[Means for solving problems]

In order to solve such a problem, in the present invention, a manual operation handle for attaching and detaching the roller is fixed to the roller raising shaft, and the pin of the lever with a pin fixed to the roller raising shaft and the roller raising lever on the stop shaft side are pivoted. There is provided a spring member that engages the groove of the mounted rod and urges the rod with a rotational force in the direction of engaging the pin and the groove, and the switching handle is rotatably supported on the frame side to perform this switching. A transmission member is provided between the handle and the rod, which engages with the rod when the switching handle is switched to the manual side and rotates the rod in the disengagement direction between the pin and the groove.

[Action]

When the switching lever is turned to the manual side, the engagement between the pin and the groove is released and the rotation transmission between the roller raising shaft and the stop shaft is released.Therefore, when the manual operation handle is turned, only the roller raising shaft turns. The attachment roller is moved and detached. Further, when the switching lever is rotated to the automatic side, the pin and the groove are engaged by the bias of the spring member, and the stop shaft and the roller raising shaft are connected to each other. The roller raising shaft rotates in conjunction with the rotation, and the attachment roller is attached and detached.

〔Example〕

1 to 4 show an embodiment of a roller attaching / detaching device according to the present invention, FIG. 1 is a partially cutaway exploded front view, FIG. 2 is a side view of the same seen from the outside of the frame, and FIG. Similarly, FIG. 4 is a side view seen from the inside of the frame, and FIG. 4 is a side view of a single-color sheet-fed rotary printing press in which the roller attaching / detaching device is implemented. In these figures, the same components as those of the conventional roller attaching / detaching device shown in FIGS. 5 to 7 are designated by the same reference numerals and detailed description thereof will be omitted. In FIG. 4, below the blanket cylinder 3 which is axially supported by the frame 1 via an eccentric bearing and whose peripheral surface is in contact with the plate surface of the plate cylinder 2, an impression cylinder 30 has its peripheral surface in contact with the left and right sides. It is supported on the frame 1, and this impression cylinder 30
A swinging device 32 is provided obliquely above the sheet feeding device, which holds the sheets sent from the sheet feeding device on the difference plate 31 one by one and replaces the sheets with the claws of the impression cylinder 30. Also, below the impression cylinder 30,
A paper output cylinder 33 whose peripheral surface is in contact with this is axially supported by the left and right frames 1, and a pair of sprockets 34 coaxial with the paper output cylinder 33 and a pair of sprockets 35 provided in the paper output portion. A pair of left and right paper ejection chains 36 having paper ejection claws are stretched between and. Then, the image transferred from the plate surface of the plate cylinder 2 to the blanket cylinder 3 is transferred to the paper held between the claws of the impression cylinder 30 and passing through the blanket cylinder 3 for printing, and the paper ejection cylinder. After passing through 33, the paper is changed to the paper ejection nail of the paper ejection chain 36, and then conveyed and ejected.

In the vicinity of the blanket cylinder 3, as in the conventional case, in association with the operation and stop of the paper feeding operation, each of them rotates by a predetermined angle in the forward and reverse directions,
A stop shaft 4 for attaching and detaching the blanket cylinder 3 to and from the plate cylinder 2 is pivotally supported via an eccentric bearing. A roller raising shaft 14 is mounted near the plate cylinder 2 in the same manner as in the conventional case, and the cam lever 26, the roller 29, and the spring member on the same axis are coaxially rotated by rotating the roller raising shaft 14 by a predetermined angle. By the action, the cam 28 rotates in the forward and reverse directions so that the four mounting rollers 8 are always attached to and detached from the plate surface. Up to this point, the apparatus is almost the same as the conventional apparatus shown in FIGS. Incidentally, 37 and 38 are a lever and a rod for transmitting the rotation of the stop shaft 4 to the eccentric bearing of the blanket cylinder 3,
Further, 39 and 40 are adjustable eccentric pin type stoppers that regulate both rotational limits of the cam lever 26.

In this device, the rod 42 is pivotally attached to the free end of the roller raising lever 41 fixed to the stop shaft 4 by the pin 43, and the groove 44 is provided at the upper end thereof.
This groove 44 is detachably engaged with a pin 46 at the tip of a lever 45 with a pin fixed to the roller raising shaft 14. Accordingly, the rotation of the stop shaft 4 is transmitted to the roller raising shaft 14, and the attaching / detaching roller 8 is automatically attached / detached in association with the attaching / detaching operation of the blanket cylinder 3. Reference numeral 47 denotes a switching handle shaft whose one end is axially supported by the operation side frame 1 with its axial movement restricted by a snap ring 48 and a stop lever 49, and the other end protruding outward of the frame 1 is an outer panel 50. Is rotatably supported by a bearing 51, and a switching handle 52 is rotatably mounted on a protrusion from the bearing. Between the switching handle shaft 47 and the bolt 53 on the rod 42, a rotational force in the direction of engaging the groove 44 and the pin 46 is connected to the rod.
A tension coil spring 54 applied to 42 is stretched, and a roller lever 56 as a transmission member having a roller 55 pivotally attached to the tip is pivotally attached to the switching handle shaft 47. When the switching handle 52 is at the position indicated by reference numeral 52A in FIG. 2, the roller 55 is separated from the rod 42 at the solid line position, and the switching handle 52 is rotated from this position to the position indicated by reference numeral 52. Then, the roller 55 moves to the chain line position while pushing the rod 42, the groove 44 of the rod 42 is disengaged from the pin 46, and the roller attachment / detachment is switched from automatic to manual. That is, the roller raising shaft 14 is projected to the outside of the frame 1, one end of which is axially supported by the bearing 57 of the outer panel 50, and the manually operated handle 58 is pivotally attached to the protruding end of the roller raising shaft 14. When it is in the position indicated by reference numeral 58 in FIG.
By rotating 58 to the position indicated by reference numeral 58A, the mounting roller 8 is released. Reference numeral 59 is a stopper which contacts the stopper lever 49 when the switching handle 52 is switched to the automatic side to regulate the rotation limit.

The operation of the roller attaching / detaching device configured as described above will be described. When the switching handle 52 is rotated to the position indicated by the reference numeral 52A in FIG. 2, the groove 44 of the rod 42 and the pin 46 are engaged with each other, so that the present apparatus is switched to the automatic side, and the roller 8 of the receiving roller 8 is switched. The attachment / detachment is performed in conjunction with the attachment / detachment operation of the blanket cylinder 3. That is, when the roller raising cam 28 and the cam lever 26 are at the positions indicated by the solid lines in FIG. 3, and the feeding roller 8 is in contact with the plate surface, the paper feeding is stopped due to a paper feeding failure or the end of the printing work. Then, the stopper shaft 4 is rotated counterclockwise in FIG. 2 to bring the blanket cylinder 3 into the disengaged state, and at the same time, the roller raising shaft 14 is moved through the roller raising lever 41, the rod 42 and the pin lever 45. Since it rotates counterclockwise in FIG. 3, the cam lever 26 pushes the roller 29 upward against the weight of the cam 28, and the roller raising cam 28 moves to the chain line position to move all the receiving rollers 8
Is separated from the printing plate at any time and put into a detached state. When the printing operation is restarted, the stop shaft 4 rotates clockwise in FIG. 2 to rotate the roller raising cam 28 to the solid line position by the above path, so that the mounting roller 8 causes the roller arm 6 formed of a spring member to rotate. By the rotation of 7 and 7, it comes into contact with the printing plate and becomes worn.

Next, when the switching handle 52 is rotated from the position indicated by reference numeral 52A in FIG. 2 to the position indicated by reference numeral 52, the roller lever 56 rotates to the chain line position while sliding the roller 55 in contact with the rod 42. The rod 42 tilts to the chain line position, the engagement between the groove 44 and the pin 46 is released, the rotation transmission between the shafts 4 and 14 is cut, and the attachment / detachment of the receiving roller 8 is switched from automatic to manual. That is,
In this state, when the manual operation handle 58 is at the position indicated by reference numeral 58 in FIG. 2, the roller raising shaft 14 is rotating clockwise in FIG. 3 and the cam lever 26 is in the solid line position. The attachment roller 8 is in the attached state. Then, when the manual operation handle 58 is rotated to the position indicated by reference numeral 58A in FIG. 2, the roller raising shaft 14 is rotated in the counterclockwise direction in FIG. become.

It should be noted that when the landing roller 8 is automatically in the wearing state as shown by the solid line in FIG. 2, the switching handle 52 is switched from automatic to manual,
Furthermore, if the loading roller 8 is released from the manual operation handle 58, the pin 46 will come into contact with the end surface of the rod 42 above the groove 44. After this, the manual release mode is switched to manual release. However, if it gets on, it will automatically pin 46
Since the groove 44 is engaged with the groove 44, there is no problem.

[Effect of device]

As is apparent from the above description, according to the present invention, in the roller attaching / detaching device of the rotary printing press, the manual operation handle for attaching / detaching the roller is fixed to the roller raising shaft and the pin of the lever with a pin fixed to the roller raising shaft. A spring member that engages the groove of the rod pivotally attached to the roller raising lever on the stop shaft side and urges the rod to the rotational force in the direction of engaging the pin and the groove is provided. Transmission for rotatably supporting and engaging between the switching handle and the rod by switching the switching handle to the manual side to rotate the rod in the direction of releasing the engagement between the pin and the groove. By providing a member, it is not necessary to engage the clutch as in the conventional case, and in any condition regardless of whether the printing cylinder is attached or detached and the attachment roller is attached or detached. Also enables the switching operation of the manual and automatic in one operation, the operability is improved, the structure is simple and assembling, makes it easy to adjust, costs can be significantly reduced.

[Brief description of drawings]

1 to 4 show an embodiment of a roller attaching / detaching device of a rotary printing machine according to the present invention, FIG. 1 is a partially cutaway development front view, and FIG. 2 is a side view of the same seen from the outside of the frame. ,
FIG. 3 is a side view of the same as seen from the inside of the frame, FIG. 4 is a side view of a single-color sheet-fed rotary printing press in which this roller attachment / detachment device is implemented, and FIG. 5 is a roller attachment / detachment of a conventional sheet-fed rotary printing press. FIG. 6 is a developed longitudinal sectional view of the apparatus, FIG. 6 is a side view seen from the outside of the frame, and FIG. 7 is a side view seen from the inside of the frame. 2 ... plate cylinder, 3 ... rubber cylinder, 4 ... stop shaft, 8 ...
Wear roller, 14 …… Roller raising shaft, 41 …… Roller raising lever, 42 …… Rod, 44 …… Groove, 45 …… Pin lever,
46 …… Pin, 52 …… Switching handle, 54 …… Tension coil spring, 55 …… Roller, 56 …… Roller lever, 58 …… Manual operation handle.

Claims (1)

[Scope of utility model registration request] 1. A manual attaching / detaching mechanism for manually attaching / detaching a receiving roller to / from a plate surface by rotating a roller raising shaft, and a rotation of a stop shaft for attaching / detaching a printing cylinder are transmitted to the roller raising shaft so as to form a receiving roller. In the roller attaching / detaching device of the rotary printing press equipped with an automatic attaching / detaching mechanism for attaching / detaching to / from the plate surface, these manual and automatic switching mechanisms, while fixing the operation handle for the manual attaching / detaching mechanism to the roller raising shaft, The rotation transmission mechanism between the stopper shaft and the roller raising shaft has a roller raising lever fixed to the stopper shaft, a pin lever fixed to the roller raising shaft, and a groove for engaging with the pin of the pin lever. And a rod pivotally attached to the free end of the roller raising lever, and the manual / automatic switching mechanism is rotatably supported on the frame side; A spring member for imparting a rotational force to the rod in the direction of engaging the pin with a pin, and a rod member supported on the switching handle side and engaged with the rod by pivoting the switching handle to the manual attachment / detachment side, and the groove And a transmission member that rotates in a direction to release the engagement with the pin.