JPH055559Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention provides a reference line for regulating the placement position of the film when placing the film for pattern exposure on the printing plate. A reference hole used for regulating the printing plate position when drawing and exposing;
When attaching the printing plate to the plate cylinder of the printing press after plate making is completed,
This invention relates to a drawing machine with a punch that punches a reference hole for regulating the mounting condition of the drawing machine.

[Prior art] Such a drawing machine with a punch can accurately draw a reference line and ensure the relative relationship between the reference line and each reference hole.
In order to save labor, it has been commonly used in recent years, and after placing the printing plate on the base plate and fixing it by vacuum suction, drawing the reference line with an XY recorder-like drawing mechanism, A group of punch blocks provided on the lower side of the base plate is used to punch reference holes for exposure and for the plate cylinder attachment side.

[Problem that the invention attempts to solve]

However, since the reference hole for the plate cylinder mounting bottom side is also drilled at the same time above the base plate, if a punch block is provided above the base plate, this will protrude above the base plate and downward from the base plate surface, so the drawing mechanism When drawing a reference line on the upper side of the printing plate, the horizontal arm of the drawing mechanism comes into contact with the punch block, making it impossible to draw on the upper side of the printing plate.

Therefore, in the past, it was not possible to drill the reference hole for the buttock side using the same drawing machine, and the reference hole for the buttock side was drilled separately using a separate device, which was time-consuming and required additional work. Problems arise such as the relative relationship between the reference hole and the reference line becomes inaccurate and the equipment investment becomes uneconomical.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

In other words, in the drawing machine with a punch described above, there is a base plate on which a printing plate is placed which has an extra length above the maximum size of the printing plate, and an exposure and plate cylinder mounting mouth arranged on the lower side of this base plate. A group of punch blocks for punching reference holes for each side, a punch block for punching reference holes for the bottom side of the plate cylinder attached to the upper side of the base plate, and a punch block for punching reference holes for the bottom side of the plate cylinder, which are arranged on the upper side of the base plate, and a punch block for moving the printing plate above the base plate. A plurality of removable pins that protrude from the base plate and fit individually into each of the exposure or mouth side reference holes drilled by the punch block group when drilling the reference hole for the buttock side with the punch block, and a plurality of pins that can be moved in and out. A drive mechanism that can be driven freely is provided.

[Effect]

Therefore, if the printing plate is placed below the base plate, the punch block on the upper side will not interfere with the drawing.
After drawing the reference line and drilling the reference holes for exposure and the plate cylinder mounting mouth side, move the printing plate above the base plate, protrude each pin, and connect each reference hole of the printing plate with the hole. By fitting each pin, the position of the printing plate can be regulated, and a reference hole for the plate cylinder mounting bottom side can be punched using a punch block provided on the upper side of the base plate.

〔Example〕

Hereinafter, details of the present invention will be explained with reference to figures showing embodiments.

FIG. 1 shows a plan view, in which X rails 2a and 2b are arranged on both sides of a base plate 1, and a Y rail 4 is stretched between heads 3a and 3b that slide together with the X rails 2a and 2b.
A ballpoint pen 6 is formed by a pen head 5 that slides together with this.
is supported, and the heads 3a and 3b move in the X direction and the pen head 5 moves in the Y direction by drive mechanisms for each of the X and Y directions (not shown in the figure), and
A ballpoint pen 6 is moved up and down by a vertical drive mechanism provided on the pen head 5, and a reference line is drawn on a printing plate 7 placed below the base plate 1.

Further, on the lower side 1a of the base plate 1, a punch block (hereinafter referred to as PUB) 8a for punching a reference hole for exposure,
8b, PUB9a, 9b, and 10a, 10b for drilling a reference hole for the plate cylinder mounting mouth side according to the dimensions of the printing plate 7 are arranged symmetrically as a pair, and the upper side of their base is This coincides with the lower side 1a, and this serves as a position adjustment stopper when the printing plate 7 is placed below the base plate 1.

Furthermore, on the upper side 1b of the base plate 1, a PUB 11 is arranged in the center for drilling a reference hole for the plate cylinder mounting bottom side, and the vertical dimension of the base plate 1 is determined by the size of the printing plate where the printing plate 7 is handled. When the maximum size is assumed, an extra length l is provided above this, and printing plate 7
Even when drawing is performed on the upper side of the pen, the Y rail 4 and pen head 5 do not come into contact with the PUB 11.

The base plate 1 is provided with a plurality of vacuum suction holes (not shown in the figure), and the printing plate 7 is placed below the base plate 1, and its lower side is brought into contact with the base of the PUB group made up of PUBs 8a to 10b. After adjusting the position and starting the vacuum pump, the printing plate 7 is attracted by the vacuum suction hole and becomes fixed, so after drawing in this state, PUB8a, 8b, and PUB9a selected according to the dimensions of the printing plate 7,
By driving 9b or 10a, 10b, the reference holes for exposure and for the plate cylinder mounting mouth side are simultaneously bored.

Next, the vacuum pump is stopped, the printing plate 7 is moved above the base plate 1 as shown by the imaginary line, and the vacuum pump is started again to fix the printing plate by suction. A reference hole for the plate cylinder mounting bottom side is bored on the upper side of the plate 7.

However, in order to adjust the position of the printing plate 7 at this time, a part is spaced upward from the perforation part on the lower side of the base plate 1 by a moving distance L from below to the top.
Pin 1 whose center is aligned with PUB group 8a to 10b
2a, 12b to 14a, 14b are PUB group 8a to
10b, and these are always submerged below the surface of the base plate 1, but are selectively protruded from the surface of the base plate 1 according to a predetermined operation. After protruding in correspondence with the holes formed by the groups 8a to 10b, they are inserted into the respective drilled reference holes of the printing plate 7, thereby regulating the position of the printing plate 7.

In addition, in consideration of handling small-sized printing plates, similar pins 15a to 15a are placed above each pin 12a to 14b.
16b, which can also be moved in and out of the surface of the base plate 1 according to the operation.

FIG. 2 is a judgment diagram of a drive mechanism that drives the pins 12a to 16b so that they can move in and out. (hereinafter referred to as a wire) 24 is fixed to one end, and the other end of the wire 24 is fixed to a movable member 25, so as the wire moves forward and backward, the pin 22 moves in and out of the surface 1c of the base plate 1. ing.

That is, for example, the prismatic movable member 25 has
A shaft 26 is provided with a screw hole 25a, into which a male thread of a motor 26 using a step motor or the like is cut.
a is screwed in, and the movable member 25 is slidably fitted into a rectangular tube-shaped guide 28 fixed on the base 27 together with the motor 26, so that the motor 2
6, the wire 24, which passes through the base 27 and whose other end is fixed to the movable member 25, is driven forward and backward, and the pin 22 moves in and out accordingly.

FIG. 3 is a block diagram of the control circuit, which includes a control unit (hereinafter referred to as CNT) 31 which includes a processor such as a microprocessor and memory, etc., and a punch switch (hereinafter referred to as SPC) 32,
A switch for pin protrusion (hereinafter referred to as SPU) 33, a switch for selecting and specifying PUB9a to 10b and pins 12a to 16b according to the dimensions of the printing plate 7 (hereinafter referred to as SPU)
SSZ) 34, PUB11 drive switch (hereinafter referred to as
SEP) 35 etc. are given, and first,
As shown in Figure 1, the printing plate 7 is placed below the base plate 1,
When SPC32 is operated, CNT31
sends a startup signal PST, and the driver (hereinafter referred to as
In order to start the vacuum pump motor (hereinafter referred to as MV) 37 via the vacuum pump motor (hereinafter referred to as MV) 36, suction and fixation of the printing plate 7 is started, and at the same time, the timer (hereinafter referred to as TIM) is activated.
38 starts, and after a certain period of time required to complete suction and fixation, a time-up occurs and a flip-flop circuit (hereinafter referred to as FEC) 39 is set, and its output drives PUBs 8a and 8b via DRs 40 and 41. Thus, a reference hole for exposure is bored.

In addition, depending on the settings of SSZ34 in advance,
CNT31 controls selector (hereinafter referred to as SEL) 42 to select output A or B, and accordingly the output of FFC39 is set to SEL42 and DR.
PUB9a, via 43, 44 or 45, 46
9b or 10a, 10b, a reference hole for the mouth side corresponding to the size of the printing plate 7 is bored by this.

Then, depending on the completion of drilling, PUB8a to 10
b is supposed to send out a termination signal, these are sent out as termination signals PE ₁ , PE ₂ or PE ₃ via AND gates 47 to 49, and the same signal PE ₁ is sent directly to AND gate 50. , the same signal PE ₂ or PE ₃ is controlled simultaneously with SEL42
is given to the AND gate 50 via SEL51,
After the gate 50 calculates the logical product indicating the completion of all drilling, it is given to the CNT 31 via the OR gate 52 as the completion signal PUE of all drilling.

Therefore, the CNT 31 sends out a reset signal PUR in response to the completion signal PUE and resets the FFC 39, thereby causing the PUB 8a to
10b is restored.

Note that the CNT 31 sends out the control signal PC ₁ simultaneously with the activation signal PST in response to the operation of the SPC 32.
The AND gate 53 is turned on, and the output of the TIM 38 is given to the FFC 39 via this, but in this case, the control signal PC ₂ is not sent out and the AND gate 54 is turned off.
FFC55 does not respond and goes through DR56
PUB11 is not driven.

Furthermore, since the sending of the start signal PST is stopped at the same time as the reset signal PUR is sent, the MV 37 is stopped and the suction fixation of the printing plate 7 is released.

Next, when the SPU 33 is operated, the CNT 31 sends out a pin up signal PUP according to the settings of the SSZ 34, and in order to give this to the encoder (hereinafter referred to as ENC) 57, the pin 12a according to the dimensions of the printing plate 7 is sent out.
~DEC5 output according to the selected combination of 16b
7 sends out, pin 12a via DR58~67
-16b and the motor 26 of FIG.
Pin drive motor (hereinafter referred to as MP) corresponding to 68
a, 68b to 72a, 72b.

Therefore, in the case of the printing plate 7 shown in FIG.
Depending on the setting of SSZ34, ENC57 outputs A and B.
1, the printing plate 7 is moved upward as shown by the phantom lines, and the pre-drilled reference holes are fitted into the pins 12a to 13b, thereby completing position adjustment.

In this state, when the SEP 35 is operated, the CNT 31 responds by sending out the activation signal PST again and also sends out the control signal PC ₂ , so that the printing plate 7 is suctioned and fixed by activation of the MV 37 as described above. , due to the time-up of TIM38, FFC55 is now passed through AND gate 54.
is set, and its output drives the PUB 11 via the DR 56, and a reference hole for the bottom side is bored on the upper side of the printing plate 7.

When drilling is completed, a completion signal is sent from PUB11.
Since PE ₄ is given as a completion signal PUE to CNT 31 via OR gate 52, sending of start signal PST is stopped and reset signal PUR is sent, and vacuum suction is canceled and PUB 11 is restored by resetting FFC 55. Then,
Return to initial state.

The reference line drawing on the printing plate 7 is performed by starting and stopping the MV 37 using a separate switch, and by driving the heads 3a, 3b, the pen head 5, and the ballpoint pen 6 based on command data from the host computer.

Therefore, the same drawing machine with a punch is used to punch all the necessary reference holes and draw the reference lines over almost the entire surface, which improves the accuracy of the relative relationship between the reference lines and each reference hole. Not only can labor savings be achieved, but capital investment can also be made more economical.

However, in Fig. 1, PUB groups 8a to 10
The number of b can be determined according to the conditions of use, and pin 1
The same applies to 2a to 16b, and in FIG.
A single motor 26 may simultaneously drive the pins at symmetrical positions, or an electromagnetic clutch or the like may be used to switch the pins to be driven, or a magnet, air cylinder, hydraulic cylinder, etc. may be used in place of the motor 26. is also optional,
Various modifications can be made, such as selecting the configurations shown in FIGS. 2 and 3 accordingly.

[Effect of idea]

As is clear from the above explanation, according to the present invention, all the reference holes required in the printing plate can be punched using the same drawing machine with a punch, so the relative relationship between each reference hole and the reference line becomes accurate. At the same time, the economy in terms of equipment investment is improved, and great effects can be obtained in the plate making of printing plates.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is a plan view;
FIG. 2 is a sectional view of the pin drive mechanism, and FIG. 3 is a block diagram of the control circuit. 1... Base plate, 2a, 2b... X rail, 3a,
3b...head, 4...Y rail, 5...pen head, 6...ballpoint pen, 7...printing plate, 8a-1
0b, 11...PUB (punch block), 12a
~16b, 22... Pin, 23... Brake wire, 24... Wire (flexible wire), 2
5...Movable member, 25a...Screw hole, 26...Motor, 26a...Shaft, 28...Guide, l...Extra length.

Claims (1)

[Scope of utility model registration request] In a drawing machine with a punch that draws and exposes reference lines on the printing plate and punches reference holes for mounting the plate cylinder, the printing plate with an extra length above the largest size printing plate is placed. A base plate, a group of punch blocks arranged on the lower side of the base plate for individually punching the reference holes for the exposure and plate cylinder mounting mouth side, and a group of punch blocks arranged on the upper side of the base plate for punching the reference holes for the exposure and plate cylinder mounting holes, respectively. a punch block for punching a reference hole for the bottom side; and a punch block for punching a reference hole for the bottom side when the printing plate is moved above the base plate and the reference hole for the bottom side is punched by the punch block that protrudes from the base plate. A drawing machine with a punch, characterized in that it is provided with a plurality of removable pins that are inserted into each reference hole for exposure or mouth side, and a drive mechanism that drives each of the pins so that the pins can be retracted and retracted.