JPH06102376B2 - Cylinder changer for printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to replacement of old and new plate cylinders or impression cylinders of a printing machine.
The present invention relates to a cylinder changer in which a changer loaded with a new cylinder is sent into a printing machine, and the old cylinder is removed and the new cylinder is continuously installed.

[Prior Art] In the case of a gravure printing machine, according to the number of color inks used for printing, a combination of a plate cylinder and an impression cylinder is arranged in a line, and a continuous sheet is placed between the cylinders from one side. Printing is performed by passing them one after another and winding them at the ends of the rows. The plate cylinder and impression cylinder need to be replaced with a new cylinder when the printed matter is changed or when the surface is worn, but the installation conditions of the plate cylinder and impression cylinder in the printing machine are extremely narrow in order to reduce the total length of the printing machine. Is placed inside.

Therefore, in the past, when replacing the cylinder, insert an empty cylinder carrier by the floor rail at a right angle to the center line of the printing machine, remove the old cylinder to be replaced first using a special device, and put it on the cylinder support on the carriage. After pulling out from the printing machine, lower the old cylinder and stack it with the new cylinder, push the bogie again to the same position as before, install the new cylinder in the bearing of the empty cylinder, and pull out the bogie to complete the series of work. Was there.

[Problems to be Solved by the Invention] However, in the conventional device, when the cylinder is replaced, the cylinder transporting carriage is reciprocated with respect to the printing machine in two steps, an old cylinder removing step and a new cylinder incorporating step. There was a problem that the work efficiency was poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cylinder changer capable of improving work efficiency when replacing a plate cylinder or an impression cylinder of a printing machine.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned object, and is a "cylinder changer for a printing machine having a carrying means for carrying a cylinder inside the printing machine, in which the carrying means is provided. A pair of support frames installed, a main shaft rotatably supported by the support frame in parallel with the body of the printing machine, two overhanging portions symmetrically projecting at right angles from the main shaft, and the overhanging portion. An arm shaft that is rotatably supported, a first arm that supports a new cylinder for replacement fixed to the arm shaft, and a second arm that supports the old cylinder, and the main shaft in front of and behind the printing machine. A cylinder of a printing machine having a moving means for moving horizontally and a lifting means for moving up and down the main shaft, wherein the arm end always points in a certain direction and moves circularly, horizontally and vertically. The above-mentioned section Solving the problem.

[Operation] The new replacement cylinder is the first cylinder supporting body provided on the overhang portion.
While being supported by the arm, the carrying means carries it into the printing machine. Subsequently, the overhanging portion provided rotatably with respect to the support frame rotates, moves to the front of the printing machine by the moving means, and rises by the elevating means, whereby the tip end portion of the second arm provided in the overhanging portion. Moves to the cylinder replacement position and the second arm supports the old cylinder. Subsequently, the overhanging portion rotates, is moved to the front of the printing machine by the moving means, and is lowered by the elevating means, so that the first portion provided on the overhanging portion is moved.
A new replacement cylinder supported by the arm of the machine is attached to the printing machine.

After that, the old cylinder is carried out of the printing machine by the carrying means while being supported by the second arm.

Example An example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of this embodiment, showing a printing cylinder changer assembled on a carriage. The floor rail is laid from the outside to the inside of the printing machine at a right angle to the center line of the printing machine. In order to make the arm 5 for supporting the left and right shafts of the plate cylinder 2 or the impression cylinder face each other on the carrier vehicle 1, the exchanger is divided into two blocks, and the support frame 4 is symmetrically installed. The two blocks are connected by the steel material on the upper side and the drive shaft 6.

From the spindle 7 mounted on the support frame 4, two projecting portions 8
Are shown facing each other, and the tip of the
A pair of arms 5 are rotatably mounted via a spacer 15. A notch is provided at the tip of the arm 5 as a shaft support portion 9 of the body. The gear of the shaft of the arm 5 is the main shaft 7
Since the arm 5 meshes with the gear of the same shape via an intermediate gear, the arm 5 always points in a fixed direction regardless of the rotation of the overhanging portion 8. Therefore, if the arm 5 is first assembled in the body direction, that angle is always set. Keep the circular orbit. These main shaft 7 overhanging portion 8,
A main shaft-related portion 10 is composed of the arm 5, the intermediate gear and the like.

Since the length of the arm 5 is limited because the space for changing the body is narrow, even if the arm 5 is short and the overhanging portion 8 rotates around the main shaft 7 and comes closest to the body, the arm 5 is supported axially. The part 9 does not reach the cylinder replacement position of the printing press. Therefore, the main shaft-related portion 10 together with the support frame 4 is perpendicular to the carriage 1 and the traverse rail
A combination of dovetail grooves on the upper part 12 is configured to be pushed out of the carriage by the hydraulic cylinder 11. Further, in order to move the shaft support portion 9 up and down to move it to the cylinder replacement position, the main shaft-related portion 10 is moved to the vertical rail by the hydraulic cylinder 14.
It is configured to move up and down in combination with dovetail groove on 13.

Next, the operation of this embodiment will be described.

When exchanging the printing cylinder, a new cylinder for replacement 16 is provided outside the printing machine in advance on the pair of arms for exchanging the cylinder on the carriage as shown in FIG.
Place it in the highest or lowest position while supporting it (illustrated by the dashed circle). To explain the operation at the time of cylinder replacement, first, the cylinder carrier 1 is advanced on the floor rail and automatically stopped at a predetermined position in the printing machine. At this time, the support frame 4 of the cylinder changer is located on the center line of the carriage 1 rearward (in the direction opposite to X in FIG. 1) with respect to the printing machine by the action of the hydraulic cylinder 11, so that the cylinder changer prints. It won't hit the plane.

Next, as shown in FIG. 3, by rotating the main shaft 7, the empty arm is moved to a height slightly lower than the lower surface of the shaft of the old cylinder 17 (illustrated by a broken line circle) to be replaced, and stopped.

At this time, since gears having the same number of teeth are mounted on the main shaft 7 and the arm rotation shaft and mesh with each other via the intermediate gear, the arm 5 is always held in the same direction regardless of the rotation of the main shaft 7. , Move the arm tip on a circular orbit.

Subsequently, the hydraulic cylinder 11 is operated to horizontally move the main shaft-related portion 10 together with the support frame 4 forward of the printing machine (X direction in FIG. 1).
If the shaft support portion 9 of the arm is positioned right below the shaft of the old body 17, the hydraulic cylinder 14 is operated as shown in FIG. 4 to raise the main shaft-related portion 10 along the vertical rail 13, The old barrel 17 leaves the bearing and is supported by the shaft support portion 9 of the arm 5.

Next, the hydraulic cylinder 11 is operated to horizontally move the main shaft-related portion 10 together with the support frame 4 to the rear of the printing machine and return to the original position. Then, the main shaft 7 is rotated to move the arm 5 supporting the new cylinder 16 as shown in FIG. 5 so that the lower surface of the shaft of the new cylinder 16 is positioned higher than the bearing of the printing machine and stopped. Next, hydraulic cylinder 11
When the shaft of the new cylinder 16 reaches directly above the bearing by moving the main shaft-related part 10 together with the support frame 4 as shown in FIG. Insert 16 into the bearing. Further, after the shaft supporting portion 9 of the arm 5 is lowered until it is separated from the axis of the new cylinder 16, the main shaft-related portion 10 is horizontally moved together with the supporting frame 4 to the center line of the carriage 1 behind the printing machine, and the position shown in FIG. The arm 5 is pulled in and the main shaft 7 is rotated as shown in FIG.
By moving the old cylinder 17 to the lowest position on the circular path, there is no part of the carriage 1 that collides with the printing machine, and the carriage 1
Goes out of the printing machine, and the automatic replacement work of the old and new cylinders of the printing machine is completed.

The space between the opposing arms 5 is made a double cylinder as the spacer 15 so that it can be expanded and contracted, so that it can be set arbitrarily according to the length of the exchange cylinder.

It should be noted that part of the circular movement of the arm end due to the rotation of the main shaft can be used for the short distance up and down movement of the shaft support portion 9 of the arm near the body bearing.

EFFECTS OF THE INVENTION According to the present invention, since the plate cylinder or the impression cylinder of the printing machine is automatically replaced in a short time, the operating rate of the printing machine is improved,
At the same time, since a replacement operator is not required, the number of steps can be reduced, and the printing cost can be reduced.

The cylinder changer according to the present invention is applicable not only to a printing machine but also to a coater, a laminator and the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a cylinder changing machine of a printing machine, and FIGS.
The figure is an illustration of a work process. DESCRIPTION OF SYMBOLS 1 ... Bogie, 2 ... Plate cylinder, 4 ... Support frame, 5 ... Arm, 6 ... Drive shaft, 7 ... Spindle, 8 ... Overhang part, 9 ... Shaft support part, 10 ... Spindle related part, 11 ... Traverse hydraulic cylinder, 12 ... Traverse rail, 13
… Vertical rails, 14… Vertical hydraulic cylinders, 15… Spacers,
16 ... new body, 17 ... old body.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-57756 (JP, A) JP-A-62-294550 (JP, A) JP-A-59-31162 (JP, A) Actual development Sho-61- 111737 (JP, U) Japanese Patent Publication Sho 53-9121 (JP, B2)

Claims (3)

[Claims] 1. A cylinder exchanging machine for a printing machine, comprising a conveying means for conveying the cylinder inside the printing machine, wherein a pair of support frames installed on the conveying means and a cylinder of the printing machine by the supporting frame. A main shaft that is rotatably supported in parallel with the main shaft, two projecting portions that project symmetrically from the main shaft at a right angle, an arm shaft that is rotatably supported by the projecting portion, and the arm shaft is fixed to the arm shaft. A first arm for supporting a new cylinder for replacement and a second arm for supporting an old cylinder, a moving means for horizontally moving the spindle back and forth with respect to the printing machine, and a means for raising and lowering the spindle. A cylinder changer for a printing press, comprising: an elevating means, and an arm end that always points in a certain direction to move in a circle, horizontally, and vertically. 2. A cylinder changer for a printing press according to claim 1, wherein a gear having the same number of teeth as that of the main shaft is attached to said arm shaft, meshes with the gear of the main shaft through an intermediate gear, and the arm is always directed in a fixed direction. . 3. The cylinder changer for a printing press according to claim 1, wherein the movement and the elevation by the moving means and the elevation means are sliding movements by a traverse rail, an elevation rail and a dovetail groove structure, respectively.