JPS646239Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field of the invention) This invention is a device for punching a plate-shaped object, particularly a device for punching positioning holes in a lithographic printing plate, or a device for punching positioning holes in a lithographic printing plate and for printing. The present invention relates to a device for drawing register marks such as register marks on a printing plate.

(Technical background of the invention and its problems) Devices for drilling holes of a predetermined shape at predetermined positions in a plate-like object have been known.

For example, in the printing field, devices are known that punch two positioning holes along one side of a lithographic printing plate. Since these two holes must be punched at fixed positions on all printing plates, the punching device is equipped with a positioning device.

This positioning device usually performs positioning based on the center, so it has a pair of abutment blocks that can move from both sides of the support plate on which the printing plate is placed toward the center. By moving the block in the above direction, it is possible to move the printing plate placed in a rough position to a fixed position with respect to the center.

By the way, in such a perforating device, the support plate that the back surface of the printing plate comes into contact with is generally inclined;
The printing plate is shaped such that its lower edge is received by the abutment surface of a punch device or a punch hole position variable device. Therefore, the printing plate is moved by the positioning device while the lower edge of the printing plate is sliding against the abutment surface of the punch device or the punch hole position variable device, and such sliding movement is repeated many times. The abutment surface is worn, and if drilling is performed in this state, the position of the punched hole will be shifted in the vertical direction compared to when there is no wear.

Such misalignment of punch holes is a fatal defect that causes misregistration in holes for positioning printing plates, and a solution to this problem is desired.

Furthermore, the same drawbacks as those described above exist in a punching and drawing device that has the function of drilling positioning holes in a printing plate and drawing register marks.

(Purpose of the invention) When moving the printing plate, the lower edge of the printing plate does not rub against the abutting surface of the punch device or the punch hole position variable device so that the punch holes do not shift, and the movement is performed smoothly. There was a need for a plate-shaped material drilling device that could

(Summary of the invention) This invention was made to solve the above-mentioned conventional technology, and a plurality of plates are arranged along the lower edge of the inclined plate-like object support plate, and the plate-like object is pushed against the lower edge of the plate-like object support plate. A plate-shaped object punching device comprising a punching device that punches a hole by receiving it on a contact surface, and a plate-shaped object moving device that moves the plate-shaped object placed on the support plate to a predetermined position. A plurality of guide members for setting the distance from the lower edge of the support plate to the punch hole are protruded along the lower edge of the support plate, and the contact surface of the guide members with the plate-like object rotates as the plate-like object moves. A plate-shaped material drilling device characterized by being configured to allow drilling.

Note that the term "plate-shaped object drilling device" as used herein includes not only devices whose main purpose is to literally punch holes in plate-shaped objects, but also devices that have other functions such as the function of drawing in addition to the function of drilling holes. .

(Embodiment of the invention) An embodiment of the invention will be described in detail with reference to the drawings.

Figure 2 shows an automatic perforation drawing device that punches and fixes positioning holes in a printing plate included in the plate-shaped material perforation device referred to in this specification, and also draws register marks such as register marks on the surface of the printing plate. FIG. 1 is a side view of a guide member that receives the lower edge of the printing plate and sets the distance from the lower edge of the printing plate to the punch hole; FIG. 3 is a side view of a guide member shown in FIG. -A cross-sectional view taken along the line A, and FIG.
It is a sectional view taken along the line BB of the figure.

In FIG. 2, reference numeral 1 denotes a drawing plate, which supports a printing plate P, which is a plate-like object, and is inclined at an angle of 70° or the like. X-axis rails 21 and 22 are laid on the upper and lower sides of this drawing plate 1, and a Y-axis rail 23 is installed on these X-axis rails 21 and 22.
is being passed over. A pen head 24 is provided on the Y-axis rail 23, and a writing instrument such as a ballpoint pen or a scriber is attached to the pen head 24.

The pen head 24 can be moved to any position along the Y-axis rail 23, and the Y-axis rail 23 can slide freely on the X-axis rails 21 and 22, so that the pen head 24 can be moved to any position on the drawing board 1. It can be moved to the position of

2 is a punch device, and two punch devices are provided along the X-axis rail 22. The punch device 2 has a gap between it and the drawing board 1 at its upper part,
Insert the lower edge of the printing plate P into this gap, and
A punch hole is punched in the portion inserted into the gap. Furthermore, two punch hole position variable devices 25 are attached to the punch device 2, and the lower edge of the printing plate P inserted into the gap of the punch device 2 is supported by a guide member 26 of the punch hole variable device 25.

Further, reference numeral 4 denotes a pair of grooves for moving the abutment block 3 formed in the drawing board 1, and a pair of grooves are provided on the same line in the X-axis direction. In the initial state, the abutment blocks 3 are located at both ends of the groove 4 equidistant from the center reference position as shown in FIG. 2, and the two abutment blocks 3 are synchronized by a known moving mechanism. and move toward the center. Even if the printing plate P is placed at an appropriate position due to the movement of the abutting blocks 3, 3, the printing plate P
The printing plate P can be moved to a position where the center of the printing plate P matches the center reference position of the drawing board 1.

The punch hole position varying device 25 and the guide member 26 will be explained below with reference to FIGS. 1, 3, and 4.

27 is a basic member of the punch hole position variable device 25, and is attached to the punch device 2 with screws 32 so that the surface 27-a of the basic member 27 is on the same plane as the surface of the drawing board 1.

Guide members 26-a, 26-b, 26-c, and 26-d are wheel-shaped and are rotatably attached to the fixed shaft 31 for attachment. This fixed shaft 31 is fixed to a rotating block 30 with a screw 37, and a rotating dial 33 is attached to one end of the rotating block 30 via a dial shaft 36 to facilitate manual rotation. Furthermore, lid 3
4 has a cross-shaped groove, and since plunger screws 35 are provided on all sides of the rotary dial 33, the cross-shaped groove of the lid 34 and the plunger screw 3
5 can fix the rotational position of the occlusion guide member. In addition, guide members 26-a, 26-b, 26
-c, 26-d are attached to the rotating block 30 at the guide members 26-a, 26-b, 26-c,
The position of the contact surface with the printing plate P of 26-d is different from each other. Furthermore, the guide member 26-
a, 26-b, 26-c, and 26-d are at a certain position, which is the position of the guide member 26-a in the examples of FIGS. The plate protrudes at least by the thickness of the printing plate P so that the abutting surface has a height that can support the lower edge of the printing plate P. 28 is an auxiliary member for preventing the printing plate P from slipping down, and a screw 29
It is fixed to the basic member 27 by.

Guide members 26-a, 26-b, 26-c, 2
It is preferable that the material 6-d has a smooth surface and is hard and has excellent wear resistance, and carbon steel was used in this example.

Next, when actually operating, turn the rotary dial 33 of the punch hole position variable device 25 to select an appropriate guide member. In this example, the guide member 26-a
shall be. Next, the printing plate P is placed on the drawing board 1.
A part of the lower edge of the printing plate P is placed in close contact with the surface, and a part of the lower edge of the printing plate
It is inserted into the gap between the surface and the auxiliary member 28, and is received by the guide member 26-a.

In this state, it can be said that the printing plate P is at a predetermined position in the vertical direction, but the position in the horizontal direction is at a predetermined position (in this case, the position where the center of the printing plate and the reference center of the drawing plate 1 coincide) ), the left and right positions are often corrected by moving the abutment blocks 3, 3 toward the center. The abutment blocks 3, 3 are moved from both ends toward the center at a constant speed to correct the lateral position of the printing plate P. At this time, the lower edge of the printing plate P rests on the guide member 26-a, and the printing plate P moves smoothly due to the rotation of the guide member 26-a.

When the printing plate P reaches a predetermined position, the abutment blocks 3, 3 stop moving toward the center, then move in the opposite direction and return to their original positions.

Next, the punching device 2 operates to punch a positioning hole in the printing plate P, and fixes the printing plate P by holding it in that state. The desired register mark is drawn.

After drawing is completed, the printing plate P can be removed from the drawing board by releasing the punching state of the punching device 2.

(Effect of the invention) When the plate-like object moves in the left-right direction, the plate-like object moves while being supported by the rotating guide member, so that the movement becomes smooth and the positioning accuracy is improved. Further, since the surface of the guide member that receives the lower edge of the plate-like object rotates, it is not gouged or worn out by sliding of the plate-like object, so that the punching position accuracy can be maintained for a long period of time. Furthermore, by combining the punch hole position variable device and the guide member, the device can be made compact.

[Brief explanation of the drawing]

Fig. 2 is a perspective view of an automatic drafting apparatus having a punch device, Fig. 1 is an enlarged cross-sectional view of the same at a position where the side of the guide member can be seen, Fig. 3 is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 4 is a cross-sectional view taken along line B-B in Fig. 1. 1...Drawing board, 2...Punch device, 2-a...
Printing plate abutment surface, 3... abutment block, 4
...groove, 21, 22...X-axis rail, 23...Y
Axle rail, 24... Pen head, 25... Punch hole position changing device, 26... Guide member, 26-
a, 26-b, 26-c, 26-d ... each guide member, 27 ... basic member, 27-a ... one surface of the basic member, 28 ... auxiliary material for preventing the printing plate from slipping off, 29 ... screw, 30 ... rotating block, 31
......Fixed shaft, 32...Screw, 33...Rear dial, 34...Cover, P...Printing plate, 35...Plunger screw, 36...Dial shaft.

Claims (1)

[Scope of utility model registration request] A plurality of punch devices are arranged along the lower side of the inclined plate-like object support plate, and punch devices that receive the plate-like object on the abutment surface and punch holes, and a punch device that punches the plate-like object placed on the support plate in a predetermined manner. In the plate-like object punching device, which is equipped with a plate-like object moving device that moves the plate-like object to a fixed position, a plurality of guide members for setting the distance from the lower edge of the plate-like object to the punch hole are provided along the lower side of the support plate. 1. A plate-like object drilling device, characterized in that a contact surface of the guide member with the plate-like object is configured to be rotatable as the plate-like object moves.