JPH0442126Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a plate cylinder adjustment device that can adjust vertical and axial registers of a rotary printing press while the plate cylinder is in operation.

Prior Art In conventional rotary printing presses, in order to adjust the vertical and axial registration of the plate cylinder during operation,
Needless to exemplify, a plate cylinder adjusting device is known in which a plate cylinder and a transfer cylinder are fitted with helical gears that mesh with each other, and the helical gear fitted to the plate cylinder is movable only in the axial direction.

Problems to be Solved by the Invention However, the above-mentioned known plate cylinder adjustment devices all have a complicated structure and high manufacturing costs, and are difficult to center during assembly. There were drawbacks such as inaccurate adjustment due to insufficient locking of the other register adjustment mechanism.

Therefore, this invention eliminates the drawbacks of the known plate cylinder adjustment devices as described above, has a small, simple, and inexpensive structure, is easy to center during assembly, and is capable of accurate register adjustment. The object of the present invention is to provide a plate cylinder adjustment device.

Means for Solving the Problems In order to achieve the above-mentioned purpose, this invention connects a male screw to the known plate cylinder shaft as described above so that only rotation is possible, and this male screw is movable. a first internally threaded member and a movable second internally threaded member, respectively, and the first internally threaded member is connected to the main helical gear so that only the rotational direction is possible;
The present invention is characterized in that first and second actuating members are provided for rotating the first female screw member and the plate cylinder shaft, respectively.

Function In the above-mentioned device, when adjusting the register in the vertical direction, if the first female screw member is rotated by the first actuating member while the male screw shaft is kept immobile by the second actuating member, This first female screw member moves in the axial direction together with the main helical gear, and vertical registration adjustment is performed by meshing this with the sub helical gear. Next, when adjusting the axial register, the male threaded shaft is rotated by the second actuating member, and the male threaded shaft moves in the axial direction within the second female threaded member, thereby adjusting the axial register.

Embodiments Hereinafter, this invention will be explained in detail based on embodiments shown in the drawings.

1 indicates the plate cylinder axis, and the spline 2 provided on this
A main helical gear 3 is spline-coupled to the helical gear 3, and an auxiliary helical gear 4 provided on a transfer cylinder (not shown) is screwed to the helical gear 3.

Bearing 1 provided in a recess provided at the end of the plate cylinder shaft 1
The male threaded shaft 5 is connected through the shaft 2 in such a manner that it can rotate but cannot be relatively moved in the axial direction.

A first female screw member 6 is screwed onto this screw shaft 5, and a lid member 14 is attached to this screw member 6 via a bearing 13 so that it can rotate but cannot move in the axial direction. The lid member 14 is attached to the helical gear 3 with bolts 15, and a gear 6 is attached to the tip.

A second female screw member 8 is fixed to the machine frame 9, a screw shaft 5 is screwed onto the female screw member 8, and a gear 7 is attached to the tip of the screw shaft 5.

Guide rollers 16, 17 are provided on the inside and outside of the machine frame 9, and first and second racks 10, 11 that mesh with the gears 6, 7 are movably supported on the rollers 16, 17. These easy steps 1
0,11 are adapted to be actuated by cylinders 18, only 11 of which is shown.

The effects of the above will be explained.

When adjusting the register in the vertical direction in the above-mentioned device, after locking the male threaded shaft 5 so that it does not rotate by the cylinder 18, the second rack 11, and the gear 7, the first rack 10 is moved by a cylinder (not shown). As a result of this movement, the first female screw member 6 rotates and moves in the axial direction via the gear 6. Due to this movement, the main helical gear 3 also moves in the axial direction,
By meshing with the auxiliary helical gear 4, movement in the vertical direction is performed, and register adjustment in the same direction is performed.

Next, when adjusting the register in the axial direction, the second rack 11 is moved by the cylinder 18, and the gear 7 is rotated by this movement. Due to this rotation, the screw shaft 5 screwed into the second female threaded member 8 moves in the axial direction, and register adjustment in the same direction is performed.

Effects of the invention This invention is as described above, in which the main helical gear is rotated by the rotation of the first female threaded member, thereby adjusting the register in the vertical direction, and by the rotation of the male threaded shaft. By screwing the second female threaded member and this male threaded shaft, the axial register adjustment is performed smoothly and easily in response to the operation quickly, and the work for this is simply by operating the first and second actuating members. Therefore, the operability is good, and since the structure as a whole is extremely small and simple, the number of components is small, processing and assembly are easy, and it can be provided at low cost. The other register adjustment mechanism in the middle is reliably locked and has the effect of allowing accurate register adjustment.

[Brief explanation of the drawing]

Figure 1 is a partially vertical front view of an embodiment of this invention;
FIG. 2 is a right side view of the same as above. 1... Plate cylinder shaft, 3... Main helical gear, 4...
Sub-helical gear, 5... Male threaded shaft, 6... First female threaded member, 8... Second female threaded member, 9... Machine frame,
10...first rack, 11...second rack.

Claims (1)

[Scope of utility model registration request] A main helical gear is attached to the plate cylinder of a rotary printing press so that it can only move in the axial direction, and this helical gear meshes with a sub-helical gear fixed to the transfer cylinder, making it possible to adjust the register in the vertical and axial directions during operation. In a plate cylinder adjusting device for a rotary printing press, a male threaded shaft is coupled to the plate cylinder shaft so as to be rotatable only, and a movable first female threaded member and an immovable second female threaded member are respectively connected to the male threaded shaft. Screw on the first
A plate for a rotary printing press, characterized in that a female threaded member is rotatably connected to the main helical gear, and first and second operating members are provided for rotating the first female threaded member and the male threaded shaft, respectively. Torso adjustment device.