JPH0811280A - Doctor holder for printing press - Google Patents

Abstract

PURPOSE:To obtain a doctor holder for a printing press wherein a projected amount of an edge of a blade can be adjusted, the blade can be easily changed, and a fixing mechanism for the blade is simple. CONSTITUTION:A pair of guide grooves 10, 10 are formed at both end parts of a blade 9. A slider 11 is, in a freely slidable manner, fitted to the guide grooves 10, 10. A rack 12 is formed to the slider 11. Besides, a positioning plate 13 which positions a blade 9 and a blade presser 16 is formed to the slider 11. Then, a pinion 18 engaging with the rack 12 is provided to the plate 9 side. A height of the slider 11 is adjusted by adjusting rotation of the pinion 18. Besides, a cam 14 holding the blade presser 16 is provided to the plate 9 side. The positioning plate 13, the blade presser 16, and the blade 15 are pinched between the cam 14 and the plate 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doctor support device of a printing machine for a doctor blade for evenly distributing ink on a plate.

[0002]

2. Description of the Related Art Conventionally, a doctor supporting device of a printing machine, which uniformly distributes ink placed on a plate by a blade, is provided with a blade holding mechanism for holding a blade arranged above the plate. This blade holding mechanism has a first plate that supports the blade and a second plate that supports the blade retainer. The blade and the blade retainer are sandwiched between the first plate and the second plate, and these are fastened together with a nut. It is fixed.

In order to evenly distribute the ink on the plate, the blade is erected diagonally with respect to the plate on which the ink is placed so that the blade retainer is located on the upper side, and the plate is moved horizontally with respect to the blade. It is like this.

[0004]

However, in the case of the doctor supporting device of the conventional printing machine, the first plate and the second plate are used.
Since the blade and the blade retainer are fastened together with the plate by bolts and nuts, it is troublesome to replace the blade during polishing, and it is difficult to adjust the protrusion amount of the blade edge after polishing the blade. was there.

Therefore, in the doctor supporting device of the printing machine according to the present invention, the amount of protrusion of the blade tip can be adjusted, the blade can be easily replaced, and the blade fixing mechanism can be made simple. To aim.

[0006]

In order to solve such a problem, a doctor supporting device of a printing machine according to the present invention is provided.
A doctor support device for a printing machine, which is equipped with a doctor blade that stands up in an inclined state with respect to the plate in order to evenly distribute the ink placed on the plate, and a doctor retainer that supports the upper surface side of the blade. A pair of guide mechanisms extending in the vertical direction are formed on both end sides of the plate disposed above the plate, and a slider is mounted on each of the pair of guide mechanisms. A positioning unit for positioning the upper end portion is provided, a gear mechanism for adjusting the height of the slider is provided for the plate-side portion and the slider, and the positioning unit is provided at the plate-side portion in cooperation with the plate itself. And a clamping mechanism for clamping the blade and the blade retainer.

[0007]

According to the doctor support device of the printing machine of the present invention, the sliders on both sides of the plate are vertically slid by the pair of guide mechanisms, and the vertical height is adjusted by the gear mechanism. The upper part of the blade and the blade retainer is positioned by the part, and the blade and the blade retainer are fixed by the plate itself and the pinching mechanism on the plate side, so that the blade can be easily replaced and the protrusion amount of the blade edge can be reduced. The adjustment is accurate and easy.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A doctor support device for a printing press according to an embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic perspective view of a main part of a doctor support device according to an embodiment of the present invention, FIG. 2 is a schematic configuration diagram according to the present embodiment, and FIG. 3 is a configuration of a slider, a rack, and a support plate according to the present embodiment. FIG.

In general, referring to FIG. 2, an air cylinder 2 and a guide bush 3 are provided on the stationary frame 1.
3 is provided, and a base 5 is fixed to the lower end of the air cylinder 2. The lower ends of the guide rods 4, 4 guided by the guide bushes 3, 3 are fixed to the upper surface of the base 5. The base 5 is guided by the guide bush by the extension operation of the air cylinder 2 and is displaced in the vertical direction. Support plates 6 are fixed to the lower surfaces of both ends of the base 5 by screws, and the rotation pins 7 are attached to the support plates 6 and 6, respectively.
The doctor unit D is held via 7. The rotating pins 7, 7 can be attached to and detached from the support plates 6, 6. If the support plate 6 is provided with a notch 6a extending in the lateral direction, the rotary pin 7 is inserted in the notch 6a, and the notch 6a is sealed and fixed by the retaining block 6b, the doctor unit D can be easily attached and detached. Will be things.

FIG. 1 shows the main structure of the doctor unit D. This doctor unit D has a plate 9 having a support plate 8 from which a rotary pin 7 is projected, and a plate 9
A slider 11 held in the guide groove 10 of the slider 11, a rack 12 fixed integrally with the slider 11, and a positioning plate 13 that is in contact with the side surface of the slider 11 and the lower surface of the rack 12 so that the wall surface of the plate 9 can slide. , An elliptical cam 14 that cooperates with the positioning plate 13 to hold the blade 15 and the blade retainer 16 therebetween.

A shaft 19 of a pinion 18 that meshes with the rack 12 is rotatably held on the support plate 8. Axis 19
A dial 20 is fixed to the outer end of the slider 20, and the vertical movement of the slider 11 is adjusted by rotating the dial 20. Also, the support plate 8 has an elliptical cam 1
4 so that the shafts 21 projecting from both ends are screwed together.
A screw is formed, and the screw of the shaft portion 21 is screwed by rotating the notch 22 formed in the end portion of the shaft portion 21 with a nut. The shaft portion 21 is fixed to the support plate 8 by rotating a nut 23 screwed into a screw thread.

Guide grooves 10, 10 as guide mechanisms formed on the left and right ends of the plate 9 extend in the width direction of the plate 9. Slider 11 fitted in the guide groove 10
The rack 12 and the rack 12 are integrally joined by, for example, welding or the like, and are slidable up and down in the guide groove 10. The slider 11 is formed higher than the depth of the guide groove 10,
Moreover, it is formed longer than the rack 12. this is,
This is for positioning the corners of the positioning plate 13, and the corners of the positioning plate 13 are the lower end of the rack 12 and the slider 11.
Abut the side surface of. The slider 11 is provided with a ball plunger 17 that penetrates the slider 11 in the thickness direction. The tip of the ball plunger 17 projects toward the side surface of the positioning plate 13 while being biased. On the side surface of the positioning plate 13 that is in contact with the slider 11, a positioning hole into which the tip of the ball plunger 17 is fitted is formed. The positioning plate 13 is a blade 15
The blade retainer 16 is for fixing the upper and left corners of the blade retainer in alignment, and can be detached from the slider 11 and the rack 12. The upper corners of the blade 15 and the blade retainer 16 penetrate the blade 15 and the blade retainer 16 in the thickness direction of the blade 15 and the blade retainer 16, and are fixed to the positioning plate 13 by positioning pins or the like. An elliptical cam 14 supported by a pair of left and right support plates 8 is disposed at a position facing the positioning plate 13. As shown in FIG. 4, the elliptical cam 14 cooperates with the plate 9 to clamp the blade retainer 16, the blade 15, and the positioning plate 13.

The doctor support device of the printing machine according to the present invention comprises a pair of guide grooves 10 and 10 on both end sides of the plate 9.
The slider 11 is slidably mounted in the guide grooves 10 and 10, the rack 12 is formed on the slider 11, the positioning plate 13 for supporting the blade 15 is formed on the slider 11, and the rack 12 is formed on the plate 9 side. A pinion 18 that meshes with the pinion 18 is provided, the height of the slider 11 is adjusted by adjusting the rotation of the pinion 18, and a cam 14 that supports the blade retainer 16 is provided on the plate 9 side.
Since the blade retainer 16, the blade 15 and the positioning plate 13 are pressed by the 4 and the plate 9,
By loosening the elliptical cam 14, the blade retainer 16, the blade 15, and the positioning plate 13 can be easily removed.

When the blade 15 and the blade retainer 16 are to be replaced with different ones, the positioning plate 13 aligns the upper left and right corners of the blade 15 and the blade retainer 16, and the elliptical cam 14 is left open. The blade 15 is provided between the pair of sliders 11 on the left and right of the blade 9.
When the positioning plate 13 to which the blade pressing member 16 is fixed is inserted, the head of the ball plunger 17 is fitted into the positioning hole of the positioning plate 13 and the positioning plate 13 is fixed.

A blade 15 having a different protrusion amount with respect to the plate P
When mounting, the height of the slider 11 can be adjusted by rotating the dial 20. If the height of the slider 11 is adjusted before the positioning plate 13 is fixed, the blade 15 and the blade retainer 16 can be mounted very easily.
After the replacement of the blade 15, if the elliptical cam 14 is rotated, the blade 1 is inserted between the elliptical cam 14 and the plate 9.
5, the blade retainer 16 and the positioning plate 13 can be fixed.

In this embodiment, the positioning plate 13 is attached to and detached from the slider 11. However, by setting the lower surface of the rack 12 as a positioning portion, the upper ends of the blades 15 and the blade retainer 16 are attached to the rack 12. The positioning plate 13 may be integral with the slider 11 if it can be aligned by abutting against the lower surface, or may be omitted.

[0017]

According to the doctor support device of the printing machine of the present invention, the sliders on both sides of the plate are vertically slid by the pair of guide mechanisms, and the gear mechanism adjusts the vertical height, and then the positioning is performed. The upper part of the blade and the blade presser is positioned by the part, and the blade and the blade presser are fixed by the plate itself and the plate side clamping mechanism, so that the blade can be easily replaced and the amount of protrusion of the blade edge can be reduced. The adjustment is accurate and easy.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a main part of a doctor supporting device according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram according to an embodiment of the present invention.

FIG. 3 is a partial perspective view showing a configuration of a slider, a rack, and a support plate of FIG.

FIG. 4 is a partial cross-sectional view showing a configuration of a slider, a rack, and a support plate of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Air cylinder 3 ... Guide bush 4 ... Guide rod 5 ... Plate 6 ... Support plate 7 ... Rotation shaft 8 ... Support plate 9 ... Plate 10 ... Guide shaft 11 ... Slider 12 ... Rack 13 ... Positioning plate (positioning part) ) 14 ... Elliptical cam 15 ... Blade 16 ... Blade retainer 17 ... Guide bush 18 ... Pinion 19 ... Shaft 20 ... Dial 21 ... Nut 22 ... Notch

Front page continued (72) Inventor Ryuji Kobayashi 1-5-1 Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd.

Claims (1)

[Claims] 1. A printing method comprising a doctor blade for standing up in an inclined state with respect to the plate for evenly distributing the ink placed on the plate, and a doctor presser for supporting the upper surface side of the blade. A doctor support device for a machine, wherein a pair of guide mechanisms extending in the vertical direction is formed on both end sides of a plate disposed above the plate, and a slider is attached to each of the pair of guide mechanisms. The slider is provided with a positioning portion for positioning the upper end portion of the blade, the plate side portion and the slider are provided with a gear mechanism for adjusting the height of the slider, and the plate side portion cooperates with the plate itself. A doctor support device for a printing machine, further comprising a pinching mechanism for pinching the positioning part, the blade, and the blade retainer.