JPH0418849Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Purpose of the invention [Field of industrial application] The invention is a device that is attached to a replaceable printing unit that is removed outside the machine so as to mesh with the gears of that unit. This relates to the fixation device used.

[Prior Art] In an offset rotary printing press that prints continuous slips, etc., the printing plate cylinder and blanket cylinder, or in addition to these cylinders, the impression cylinder can be removed from the printing press body in order to accommodate changes in the vertical size of the slip. It is a cassette type, and the vertical size can be changed by replacing these.

Further, the plate cylinder in an offset rotary printing machine for printing continuous slips, etc. has a groove in the longitudinal direction of the cylinder and includes a small diameter shaft that can rotate smaller than a plate cylinder having substantially the same groove.

To set the plate, cut a flat plate made of aluminum to an appropriate size, bend a portion of both ends in the vertical direction, hook the plate into the plate cylinder groove, and slowly rotate the plate cylinder while applying pressure to the blanket cylinder. The plate is wrapped around the plate cylinder, and finally, the other end of the plate is inserted into the groove of the plate cylinder and the shaft, and by rotating the shaft, the plate is engaged and fixed.

In addition, when not in use, the replaceable printing unit is removed from the printing machine and placed outside the machine.It is not impossible to set the plate while rotating the cylinder by hand, but in this case, it is possible to set the plate with one hand. It is extremely difficult to work because it is necessary to fix the plate and cylinder.
In particular, as the left and right width of the plate becomes wider, it not only becomes more difficult to set it, but also may cause damage to the plate.

[Problems to be solved by the invention] In order to improve the above-mentioned conventional drawbacks, the present invention attempts to fix the cylinder using an exchangeable printing unit fixing device. There are models that have three cylinders (print cylinder, blanket cylinder, and impression cylinder) as a unit, systems that have two cylinders (print cylinder and blanket cylinder) as a unit, and systems that each can be removed from the machine separately.The device according to the present invention is suitable for the former. This can be applied to two types of units.

(b) Structure of the invention [Means for solving the problem] The invention is a portable and simple printer that is attached to an exchangeable printing unit placed outside the machine so that the gears mesh with each other. The present invention relates to a fixing device that can be attached to and removed from the vehicle, and will be described below with reference to embodiments shown in the drawings.

[Embodiment] FIG. 1 is a front view of a replaceable printing unit fixing device 1 according to the present invention, and FIG. 2 is a side view showing the device shown in FIG. 1 engaged on a replaceable printing unit.
A gear 4 is fixed by a key to the other side of the shaft 3 fixed to the frame 2, and is fixed to the replaceable printing unit by a clamp handle 5 integrated with a screw. Further, a saddle-shaped groove 2a is provided in the lower part of the frame 2 so that the apparatus can be stably placed on the replaceable printing unit.

The position of the fixing gear 4 is such that when this frame 2 is placed on the gear side frame 12 of the exchangeable cylinder type printing unit 11, it engages the gear 13 of the printing plate cylinder, and the position of the fixing gear 4 is such that it engages the gear 13 of the printing plate cylinder. Even if the diameter changes, they are always in the position where they interlock.

This fixing device frame 2 is attached to the replaceable printing unit 1.
In the embodiment, the method of attaching and fixing the printing unit to the gear side frame 12 of the printing unit 11 is to adjust the meshing of the gears using elongated holes 2b provided in the frame 2, etc., and then insert the print unit into the groove at the bottom of the frame 2 and the replaceable printing unit. Put the frames 12 together and place the frames 12 together.
Fix it using the screw 5a with the clamp handle 5 attached. In the embodiment, the replaceable printing unit 11
A gear is used to fix the plate cylinder gear 13, but any shape can be used as long as it can mesh with the gear and be fixed.

The shape of the fixing device frame 2 and the way it is fixed to the replacement printing unit frame 12 are not limited to the above embodiments. You may use any combination of methods such as placing the clamp over the clamp and fixing it from the front with bolts, or pressing only with the clamp handle without using bolts.

(c) Effects of the invention The device of this invention fixes the exchangeable printing unit of a form offset rotary printing press (the shape of the fixing device frame needs to be changed according to the type of the exchangeable printing unit), thereby improving the printing machine. It is possible to change plates outside the machine without having to move the machine, improving the operating rate of the printing machine.

Furthermore, since this device can be made into a small handheld type, it can be easily attached to a printing unit and can be easily handled.

[Brief explanation of the drawing]

FIG. 1 is a side view of the replaceable printing unit fixing device according to the present invention, and FIG. 2 is a front view showing the first illustrated device engaged with the replaceable printing unit. 1... Replaceable printing unit fixing device, 2... Frame, 3 gear shaft, 4... Fixed gear (fixed part),
5...Clamp handle, 11...Replaceable printing unit, 12...Frame, 13...Gear.

Claims (1)

[Scope of utility model registration request] A frame is provided that can be placed on the frame of an exchangeable printing unit consisting of a printing plate cylinder, a blanket cylinder, etc., and the frame is provided with a frame capable of being placed on the frame of an exchangeable printing unit consisting of a printing plate cylinder, a blanket cylinder, etc. A replaceable printing unit fixing device comprising a fixing part having a shape that meshes with one of the gears of a plate cylinder, a blanket cylinder, etc.