JPH0476793B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic drawing machine that is equipped with a register device that can fixedly drill holes in a workpiece using a pin hole punching device and can arbitrarily set the drilling position of the workpiece.

In the printing process, the role of punch pin holes is extremely important, and regulating the position based on the punch pin holes at the plate-making stage and up to the installation of the plate on the printing machine improves printing quality and work efficiency. However, when using an automatic drawing machine to punch a pin hole in a workpiece such as drawing paper, direct film, or printing plate, and then drawing, one end of the pinhole side of the workpiece is from,
The distance between the holes has an important meaning. That is, it is an extremely important requirement in the printing process to be able to arbitrarily set the distance between the edge of the printing plate, which is the object to be printed, and the punch pin hole (hereinafter referred to as gripping dimension). After the printing pattern is printed on the printing plate, it undergoes a development process to become a printable plate, which is then attached to the plate cylinder of a printing press to perform printing. When attaching the printing plate to the plate cylinder, position the printing plate on the plate cylinder by inserting one pin overlapping the punch pin hole and the pin hole of the plate cylinder, and then place the edge of the plate in the plate vise. Fix the printing plate to the plate cylinder by pressing it down with something like. (Alternatively, use a plate bending machine to bend the edge of the printing plate based on the punch pin holes of the printing plate, and then align the punch pin holes with the pin holes of the plate cylinder and insert one pin to position the printing plate on the plate cylinder.) (In some cases, the edge of the plate is pressed down.) At this time, the edge of the plate to be pressed is the punch pin hole side and the opposite end, but the dimensions of the edge of the plate to be pressed are fixed by the plate cylinder. Since the pin holes are also fixed, the gripper dimensions are constant depending on the plate cylinder. Since the size of the edge of the plate to be pressed differs depending on the pressing mechanism, it is natural that the grip dimensions differ between manufacturers, and even within the same manufacturer, they differ depending on the manufacturing period.
Therefore, if the grip dimensions of the printing plate and the plate cylinder are different, either the grip dimensions of the printing plate are shorter than the grip dimensions of the plate cylinder, or the grip dimensions of the printing plate are shorter than the grip dimensions of the plate cylinder. If it is shorter, the holding down will not be sufficient, and when the plate cylinder rotates at high speed, the printing plate may come off and cause a serious accident.In practice, it will be difficult to attach printing plates with different grip sizes to the plate cylinder. .

In automatic drawing machines equipped with conventional pin hole punching devices, the position of the punch pin hole in relation to the position where the pin hole punching part abuts the workpiece is fixed, so the position of the punch pin hole and one end of the workpiece is always constant. The range of application was limited because the holes were drilled in certain positions.

The present invention further incorporates a registration device that can change the abutting position into an automatic drawing machine having the above-mentioned punch pin hole drilling device, so that the punching pin can be attached to one end of the object to be drawn even though it is a single pin hole punching device. To provide an automatic drawing machine that can reliably drill a hole at an arbitrary position with high accuracy and at an appropriate position.

To briefly describe the outline of the present invention, the present invention includes a pin hole punching device for punching and fixing a workpiece placed on a drawing board of an automatic drawing machine, and the positional relationship between the pinhole punching device and the workpiece is fixed. The gist of the present invention is a drawing board on which an object to be drawn is placed, and a positioning device fixed to a fixed position on the drawing board.
A pair of punching devices, a punching pin mounted on the punching device and punching a punch pin hole in the placed object, and a Y-axis rail installed perpendicular to the X-axis passing through the center of the pair of punching pins. , an X-axis rail that is installed parallel to the X-axis and movable in the Y-axis direction along the Y-axis rail, and an object to be drawn that is installed movably in the X-axis direction on the X-axis rail. In an automatic drawing machine having a pen head for drawing and drawing line drawings, a support stand movable in the Y-axis direction and a pair of butts provided on the support stand so as to be finely adjustable and capable of abutting against the object to be drawn are provided. This automatic drawing machine is characterized in that it has a registration device consisting of a block, and by making the abutment position of the placed object to be drawn variable, it is possible to make a hole at an arbitrary position on the object to be drawn.

One embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view of an automatic drawing machine according to the present invention. Y-axis rails 2 and 3 are installed in parallel on both sides of the drawing board 1, and Y-axis drive units 5 and 6 are mounted on these Y-axis rails 2 and 3. Furthermore, an X-axis rail 4 is spanned over the Y-axis drive units 5 and 6, and a pen head 7 is slidably attached to the X-axis rail 4. A pen support stand 9 is provided protruding from the pen head 7, and the drawing pen 8 is held by this pen support stand 9. 10 is an operation panel, and 26 is an object to be drawn placed on the drawing board 1.

The configuration as described above is no different from a normal automatic drawing machine, and the present invention is used as an abutting part for a pin hole drilling position provided in an automatic drawing machine with such a general configuration. This is achieved by installing a device, which will be explained in detail below.

In FIG. 1, reference numeral 11 denotes a punch pin hole drilling device which is always mounted and fixed in a fixed position, and a punch hole drilling head is exposed on the drawing board 1. 12
a and 12b are a pair of object abutting blocks installed integrally in the X-axis direction, and only these object abutting blocks appear on the drawing board 1;
A registration device 12 is housed below the drawing board 1 and is capable of varying the abutment position of a moving table, a motor, a ball screw, etc., which will be described later. FIG. 2 is a plan view of the register device which can vary the abutment position, and FIG. 3 is a side sectional view of the register device 12 taken along line FF in FIG. 1. In FIGS. 2 and 3, a pair of object abutment blocks 12a and 12b are each attached to an abutment block support base using a screw or a slotted screw, for example, so that the position in the Y-axis direction can be finely adjusted. The abutment block support base 13 is attached and fixed to the movable base 14 by screws or slotted screws.
is fixed to. The movable table 14 is mounted so as to be slidable in the eccentric direction via two slide shafts 16, and can be positioned in the eccentric direction by engaging a ball screw 15. The motor 20 is fixed to the bracket 18 by a motor bracket 19 with screws or the like. Here, the pair of object abutting blocks 12a and 12b are located on a straight line and parallel to the X-axis rail 4.

A pair of left and right abutting blocks 12a and 12b of the registering device 12 of the apparatus of the present invention are each supported by a support stand 13.
However, since fine adjustment is required to make the block parallel to the X-axis direction passing through the center of the drilling pin 11, the block or either the left or right side of the block is It can be adjusted in advance, and the left and right sides of the block can also be adjusted in advance.
The pairs are designed to be able to move together as the support base 13 moves, and the center line of the object to be drawn in the Y-axis direction is always perpendicular to the X-axis that connects the pin holes drilled in the object to be drawn. It is also possible to align the numbers.

The present invention is constructed as described above, and the operation of the present invention will be described next.

When punching a punch pin hole at a position a specified distance a from one end of the object 26 shown in FIG. 1, first input the specified distance a from the operation panel 10. The instruction is electrically converted and transmitted to the pulse motor 20 in FIG. The motor 20 is a ball screw 15
The moving table 14, which is engaged with the ball screw 15, slides on the slide shaft 16 and moves to a designated position. In this position, as shown in Figs.
The side end is located at a distance a from the center of the punching pin 11a of the pin hole punching device 11 in the negative direction of the Y-axis of the drawing machine. After this, the object to be drawn 26 is placed on the drawing board 1,
After one end of the object 26 is fixed against the abutment block, the object 26 is removed by the pin hole punching device 11.
Drill a pin hole in 6. In other words, when drilling a pin hole at a specified distance from one end of the object 26, the position of the pin hole from one end of the object 26 can be easily changed by changing the position of the object abutting block. It will be possible. When the object abutting block is located at position A in FIGS. 4 and 5, the distance from one end of the object 26 to the center of the punch pin 11a is a, and the punch pin hole 22 is punched. When the object abutting blocks 12a and 12b are set at position B, the distance from one end of the object 26 to the center of the punch pin 11a is b, and the punch pin hole 23 is punched. Therefore, when drawing is performed based on the punch pin hole, the drawing pattern 24 in case A and B
In this case, the positional relationship of the drawing pattern 25 with respect to the object 26 to be drawn is as shown in FIG. Note that the above is one embodiment of the present invention, and the present invention is not limited thereto in any way. For example, in the above embodiment, the positioning of the object abutting block is performed electrically using a motor, but pneumatic pressure, hydraulic pressure, etc. may be used in combination, or manual positioning may be used.

As described above, the present invention is convenient when automatically drawing a block copy or a direct printing plate using an automatic drawing machine, and allows the punching pin hole to be placed at an arbitrary position from one end of the workpiece with high accuracy. It is possible to obtain objects such as block plates and printing plates with holes punched in them, and it can also be applied to photoengraving machines in the plate making printing process.In particular, in the printing process, punch pin holes for the plate cylinder of various printing machines can be used as standards. This has a significant effect on improving work efficiency, accuracy, and quality in the plate making and printing process, such as widening the applicable range of plate mounting and improving registration accuracy.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an automatic drawing machine according to the present invention;
Fig. 2 is a plan view of a registering device that can change the abutment position, Fig. 3 is a side sectional view of the registering device taken along line F-F in Fig. 1, and Fig. 4 is a pin hole punching device and a cover for the registering device. FIG. 5 is a plan view of a drawn object drawn by the automatic drawing machine according to the present invention. 1... Drawing board, 2, 3... Y-axis rail, 4... X-axis rail, 5, 6... Y-axis drive unit, 10... Operation panel,
DESCRIPTION OF SYMBOLS 1...Drilling device, 12...Abutting block, 14...Moving table, 20...Motor, 24, 25...Drawing pattern, 26...Drawing object.

Claims (1)

[Scope of Claims] 1. A drawing board on which an object to be drawn is placed, a pair of punching devices mounted and fixed at a fixed position on the drawing board, and a drawing device mounted on the drilling device and placed on the object to be drawn. A punch pin that punches a hole, a Y-axis rail that is installed perpendicular to the X-axis passing through the center of the pair of punch pins, and a Y-axis rail that is installed parallel to the X-axis and can be moved in the Y-axis direction. In an automatic drawing machine that has an X-axis rail and a pen head that is installed on the X-axis rail so as to be movable in the X-axis direction and draws a line drawing on the object placed above, the pen head is movable in the Y-axis direction. It has a support stand, and a registration device that is provided on the support stand so as to be finely adjustable and includes a pair of abutment blocks capable of abutting against the object to be drawn, and the abutment position of the placed object to be drawn. An automatic drawing machine characterized by being able to make a hole at any position on a workpiece by making it variable.