JPH0335600Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a unidirectional enlarging/reducing device that is capable of enlarging or reducing a document in only one direction.

[Conventional technology]

For example, in the case of letterpress rotary printing, the letterpress must be manufactured by reducing only the print rotation direction, taking into consideration the plate cylinder diameter and plate thickness, with respect to the printing dimensions for which the letterpress is previously determined.

If the printing size is the same as the printing size, when printing with a rotary printing press, the actual printing size will be printed longer only in the rotational direction. Therefore, it is necessary to reduce the feed width in the rotational direction of the plate cylinder before the plate is manufactured so that it is equal to the printing size determined at the printing completion stage. Moreover, such consideration is not necessary at all in the width direction of the plate cylinder.

There are devices that use optical methods to reduce (enlarge) in only one direction as described above, but their mechanisms are complicated and expensive. Furthermore, when enlarging and reducing the size using a compass and a ruler, measurements and conversions are repeated, which poses a problem in work efficiency.

[Problems that the invention is not intended to solve]

The present invention was devised in view of the above-mentioned current situation, and aims to provide an apparatus that has an extremely simple configuration and is capable of enlarging and reducing in only one direction.

[Means for solving problems]

In order to achieve the above object, the unidirectional enlarging/reducing device according to the present invention includes a first ruler and a second ruler that are movable in directions perpendicular to each other, and the first ruler or the second ruler An enlargement/reduction member having an oblique side that engages with said one ruler at a required angle with respect to the moving direction of said one ruler is integrated with a ruler different from said one ruler. The ruler is movable and is characterized by being provided with means for freely adjusting the angle formed between the oblique side of the enlargement/reduction member and the moving direction of the one ruler.

[Effect]

The unidirectional enlarging/reducing device of the present invention includes a first ruler and a second ruler that are movable in directions orthogonal to each other, and the unidirectional enlargement/reduction device includes a first ruler and a second ruler that are movable in directions orthogonal to each other, and that A magnifying/reducing member having an oblique side that engages with the one ruler at a required angle with respect to the ruler is moved integrally with a ruler other than the one ruler, and the magnifying/reducing member・
The angle between the oblique side of the reduction member and the moving direction of the one ruler is set to an angle that allows the desired reduction or enlargement to be achieved by rotating the enlargement/reduction member about a pivot point, and ,
If the moving direction of the first ruler and the angle of the oblique side of the enlargement/reduction member are set to reduction, and the second ruler is moved so that the first ruler is moved along the document,
The enlargement/reduction member also moves together with the second ruler, and the oblique side of the enlargement/reduction member is engaged with the first ruler, so the first ruler is pressed against the oblique side. If the second ruler is moved in a direction perpendicular to the second ruler, and the first ruler is moved along the document as described above, the second ruler will be moved at the angle described above with respect to the movement of the first ruler. There is a ruler that moves a distance corresponding to a predetermined reduction ratio, and by using this second ruler, it is possible to draw a diagram or the like in which only one direction of the document is reduced.

When changing the reduction ratio, etc., it can be carried out by rotating the enlargement/reduction member about a fulcrum and changing the angle between the oblique side of the enlargement/reduction member and the moving direction of the first constant.

〔Example〕

The present invention will be explained based on embodiments shown in the drawings.

In the figure, 1 is a base plate on which a document or the like is placed having orthogonal side walls 1a and 1b, and 2 is a first slide having the same thickness as the base plate 1 that slides along the side wall 1a of the base plate 1. This is a first constant fixed to the moving member 3. Reference numeral 4 denotes a roller loosely fitted to a shaft 5 implanted at an appropriate location on the first ruler 2, and 6 is a scale provided in the longitudinal direction of the first ruler and on the front side in the moving direction.

7 is a side wall 1b of the base plate 1 in a direction perpendicular to the side wall 1a of the base plate 1 on which the first sliding member 3 slides;
8 is a second ruler fixed to the second sliding member 7, and 9 is a second sliding member having the same thickness as the base plate 1 that slides along the longitudinal direction of the second ruler 8. in,
It is also a scale provided on the front side of the movement of the second ruler.

10 is an enlargement/reduction member rotatably supported 12 on the base end side of the sliding member 7 and provided with an oblique side 11 forming a required angle with respect to the moving direction of the first ruler 2; The oblique side 1 of the enlargement/reduction member 10
1 rotates the enlargement/reduction member 10 about the pivot support 12 so as to form a predetermined angle with the moving direction of the first ruler 2;
Select one of the plurality of angle adjustment holes 13, 13, 13, . The enlargement/reduction member 10 is fixed by inserting a pin 14 between the holes. Since the enlargement or reduction ratio is determined by the angle between the moving direction of the first ruler 2 and the oblique side 11 of the enlargement/reduction member 10, the angle adjustment hole 13,
13, 13, . . . are set according to predetermined enlargement/reduction ratios. Reference numeral 15 denotes a handle erected at an appropriate location on the second sliding member 7.

Since this embodiment is constructed as described above, to explain its operation, the first sliding member 3 is placed on one side of the document A placed and fixed on the base plate 1.
By sliding the first ruler 2 along the side wall 1a, the first ruler 2 fixed to the first sliding member 3 is also moved, and the scale 6 of the first ruler 2 is adjusted. Next, the angle between the oblique side 11 of the enlargement/reduction member 10 and the moving direction of the first ruler 2 is selected from among the predetermined angle adjustment holes 13, 13, 13... and enlarged/reduced.
The reduction member 10 is rotated about the pivot 12 as a fulcrum and fixed with a pin 14, and the handle 15 is gripped to move the second sliding member 7 in a direction perpendicular to the sliding direction of the first sliding member 3. As the second sliding member 7 moves, the enlargement/reduction member 10 fixed to the second sliding member 7 also moves integrally.
The oblique side 11 of the reduction member 10 is engaged with the roller 4 loosely fitted to the shaft 5 implanted in the first ruler 2. and,
The second sliding member 7 moves the first ruler 2 along the line of the document A while maintaining this engaged state.
If it is moved in a direction perpendicular to the direction of movement of the first ruler 2, the enlargement/reduction member 10 will also move at the same time as the second sliding member 7 moves, and the enlargement/reduction member 10 will move at the same time.
As the reduction member 10 moves, the roller 4 provided on the first ruler 2, which is engaged with the oblique side of the member 10, is pushed by the oblique side 11. The member 7 is moved in a direction perpendicular to the second ruler 8 by the first sliding member 3 sliding along the side wall 1a of the base plate 1 which is perpendicular to the side wall 1b of the base plate 1 on which the member 7 is guided.

At this time, due to the angle formed between the oblique side 11 of the enlargement/reduction member 10 and the moving direction of the first ruler, the angle between the enlargement/reduction member 10 and the moving direction of the first ruler 2 is greater than the moving distance of the first ruler 2. The second ruler moves like this 8
Since the moving distance can be reduced by the set ratio, it is possible to draw a drawing that is reduced in one direction from the original by the set ratio at the position of the scale 9 of the second ruler 8. Further, it is also possible to directly engrave a scaled figure or the like on a synthetic resin plate or the like with a knife.

In addition, in the embodiment described above, the first rule 2
The original A was placed on the second ruler 8 side and a reduced draft was drawn on the second ruler 8 side.
It is also possible to place it on the side and draw on the first ruler 2 side.

Further, the handle 15 is fixed to the first sliding member 3,
Place the original A under the first ruler 2, and
Align the scale 6 of the document A with one side A' of the document A, engage the oblique side 11 of the enlargement/reduction member 10 with the roller 4 of the first ruler 2, and move it downward in the figure in the opposite direction to the above-mentioned moving direction. A similar effect can be obtained by moving the first ruler 2 and drawing on the second ruler 8 side.

Furthermore, in the embodiment described above, a plurality of small holes 13, 13, . The enlargement/reduction ruler 10 may be fixed to a bolt provided upright on the second sliding member 7 with a thumbscrew or the like. Furthermore, the ruler that moves the enlarging/reducing member integrally may be the first ruler, and the ruler that engages with the enlarging/reducing member may be the second ruler.

[Effect of idea]

The unidirectional enlarging/reducing device according to the present invention includes a first ruler and a second ruler that are movable in directions orthogonal to each other, and is moved along with the movement of the second ruler, and is moved along with the movement of the second ruler. Enlargement in which an enlargement/reduction member having an oblique side forming a predetermined angle with the movement direction is engaged with the first ruler, and these members move together with the first ruler, the second ruler, and the second ruler. - Since the reduction member is linked, the moving distance of the second ruler is determined by the angle between the moving direction of the first ruler and the oblique side of the enlargement/reduction member. It is possible to reduce or enlarge the moving distance. Since the angle is adjusted by rotating the enlargement/reduction member about the pivot point, the required reduction or enlargement can be easily obtained. Note that the same effect can be obtained even if the ruler that moves integrally with the enlarging/reducing member is the first ruler, and the ruler that engages with the enlarging/reducing member is the second ruler.

In addition, the present invention is constructed with extremely few members, such as a first ruler, a second ruler, and an enlargement/reduction member, and is capable of enlarging or reducing in one direction with a simple operation, making it practical. The effects are significant.

[Brief explanation of drawings]

The drawing shows an embodiment of the present invention, and is an overall perspective view of a unidirectional enlarging/reducing device. 1: Base plate, 2: First ruler, 8: Second ruler, 1
0: Enlargement/reduction member, 11: Oblique side of enlargement/reduction member.

Claims (1)

[Scope of utility model registration request] A first ruler and a second ruler are provided that are movable in directions orthogonal to each other, and the ruler is set at a predetermined angle with respect to the moving direction of either the first ruler or the second ruler. An enlargement/reduction member having an oblique side that engages with a ruler is moved integrally with another ruler different from the one ruler, and the enlargement/reduction member has an oblique side and the one ruler. A unidirectional magnifying device characterized by being configured by providing means for freely adjusting the angle formed with the moving direction of the
Reduction device.