KR101024396B1 - Eccentric cam shaft using support device for doctor knife - Google Patents

Abstract

PURPOSE: A doctor knife supporting apparatus using an eccentric shaft is provided to maintain the horizontal smoothness of a doctor knife evenly, since a doctor knife is evenly pressed by a spring plate. CONSTITUTION: A doctor knife supporting apparatus using an eccentric shaft comprises a support member(10), a fixing plate(30), and an anchoring bolt(40). A support surface(12) through which a first coupling hole(11) passes is formed along the longitudinal direction of the support member. A doctor knife(20) is mounted on the support surface of the support member, and the front side thereof is exposed to the outside of the support surface. The back side of the doctor knife is located on the inner side(10a) of the support member. The fixing plate is placed on the upper side of the doctor knife. A second coupling hole(31) passes through the fixing plate to correspond to the first coupling hole. The anchoring bolt is inserted into the second coupling hole of the fixing plate.

Description

Doctor Knife Supporting Device Using Eccentric Shaft {ECCENTRIC CAM SHAFT USING SUPPORT DEVICE FOR DOCTOR KNIFE}

The present invention relates to a doctor knife supporting apparatus using an eccentric shaft, and more particularly, a doctor knife for removing ink applied to a printing roller by spreading the doctor knife evenly using the eccentric shaft and the spring plate. It is easy to install evenly unfolded without bending, which shortens the working time and makes it easy for general workers who are not installation technicians to install and use the doctor knife. It relates to a support device.

In general, a gravure printing machine which prints by imprinting a groove on a printing roller and applying ink to the surface of the printing roller in which the groove is imprinted is made by using various colors of ink. Continuous printing is performed.

Such a gravure printing machine engraves each of the groove-shaped printing grooves 2 on the surface of the printing roller 1 in the same manner as the entire image of the printed material to be printed before starting printing as shown in FIG. 1. Stamping, the printing groove (2) in which the printing groove (2) is mounted in sequence on each of the printing units installed in a continuous alignment in one direction.

As described above, after a plurality of printing units are mounted in the order of a plurality of printing rollers engraved in different shapes on each of the printing units aligned and aligned continuously in one direction, the rolled sheet is fed to supply the rolled sheet. As the fabric passes through the printing roller, the same overall shape and color as the entire image to be printed is printed on the fabric.

In addition, the printing roller 1 mounted on the gravure printing machine for printing a desired shape or color on the fabric by this operation, the surface of the printing roller (1) of the remaining portion except for the printing groove (2) stamped on the printing roller (1) A doctor knife (3) is installed to remove the ink on the substrate, and ink is applied to the surface of the printing roller (1) immediately before the printing fabric is supplied to the printing unit by the doctor knife (3) and the printing groove (2). The ink applied to the surface of the printing roller 1 except for the ink applied to the ink is removed so that the ink of the printing groove 2 stamped in a predetermined shape on the surface of the printing roller 1 remains filled without being removed. do.

Therefore, the ink applied to the printing groove 2 of the printing roller 1 is transferred to the fabric passing between the printing roller 1 and the rubber roller 4 which is positioned on the upper portion of the printing roller 1. Printing takes place.

Accordingly, the defective state of printing is the ink removal of the doctor knife 3 for removing the ink applied to the surface of the printing roller 1, which is the remaining portion except for the ink applied to the printing groove 2 of the printing roller 1. As determined by the function, a doctor knife for removing the ink applied to the surface of the printing roller 1 except the ink applied to the printing groove 2 is in close contact with the surface of the printing roller 1. It should be spread evenly along the longitudinal direction of the printing roller (1).

For example, when the doctor knife is partially curved with respect to the surface of the printing roller 1, the curved portion of the doctor knife is inferior to the surface of the printing roller 1, and the adhesion of the printing roller 1 is reduced. Since the ink applied to the surface is not completely removed, not only the ink applied to the printing groove 2 but also the ink that is not removed by the doctor knife is transferred to the fabric as it is. There is a problem that a bad print condition occurs.

Therefore, the operation of the doctor knife is spread evenly as a whole and close contact is required, as seen in the doctor knife installed in the conventional printing machine, as shown in Figure 2, the fixing plate 3a and the upper portion of the fixing plate 3a Positioning and supporting plate (3c) having a handle (3b) on the upper surface, and doctor knife (3) located between the fixed plate (3a) and the support plate (3c), the tip is exposed to wipe the surface of the printing roller ), The fixing plate 3a, the support plate 3c, and the plurality of fixing bolts 3d for fixing the doctor knife 3, so that the doctor knife 3 is evenly picked out without bending or bending. There is a problem in that it is difficult to install the doctor knife to maintain horizontal smoothness.

In other words, since the doctor knife 3 is located on the fixed plate 3a and the support plate 3c and is fixed by the pressing force of the fixed plate 3a and the support plate 3c, the support plate ( The force for pressing the doctor knife 3 should be evenly distributed along the longitudinal direction of the doctor knife 3 as a whole, but in the case of the doctor knife positioned in the space between the plurality of fixing bolts 3d, the fixing bolt 3d Since the pressing force of the support plate (3c) is not largely acted by the fixing force by the force), the doctor knife (3) positioned between the fixing bolt (3d) and the fixing bolt (3d) is raised.

On the other hand, in order to prevent the lifting of the doctor knife (3) in this way, the professional installation technician must install the doctor knife (3) so that the doctor knife (3) as a whole to maintain the flatness evenly as a whole through sophisticated work. There is a problem that the working time is delayed due to the installation of the doctor knife, and even if the doctor knife is installed by a professional installation technician, the doctor knife (3) positioned between the fixing bolt (3d) and the fixing bolt (3d) is lifted. The situation is not completely prevented.

As a prior art, a printing cylinder ink removing device for a gravure printing machine, which is published in Korean Patent Publication No. 10-2001-0085042, has been devised, which is provided on the outer circumferential surface of a printing cylinder which is installed in a printing fabric supplied to a printing unit of a gravure printing machine. In the printing cylinder ink removing device for gravure printing machine to scrape off excess ink through the knife, it is installed in the upper surface of the base plate and formed in a number of steps in the front and rear steps on the downward inclined surface of the knife support holder to seat the knife. A stepped knife support jaw supporting step by step and a means for fixing and unlocking the knife seated and supported on the stepped knife support jaw are further configured, and the knife fixation and release means may cover a downward slope including the installation groove. Can be formed in size by screw member A knife fixing plate spaced apart from the upper side of the downward slope, and a knife fixing plate spaced apart from the knife on the lower surface of the knife fixing plate, the tip of which protrudes from the tip of the knife fixing plate, while the knife supported on the stepped support jaw is When bending occurs in the rotational direction due to the rotation of the printing cylinder, the rear end of the knife fixing plate with respect to the screw member is rotated with respect to the screw member while being installed in the reinforcing plate to suppress the bending of the knife and the installation groove of the knife support holder. It consists of a knife fixing / release ball mechanism having a handle for pressing and fixing or releasing the knife by rotating the front end of the knife fixing plate downward by lifting upward.

The prior art of such a configuration is to prevent the bending of the knife by the knife release means, but the knife release means is made by the ball mechanism, the knife of the portion where the ball mechanism is located to prevent the bending (lifting) phenomenon On the other hand, the bending mechanism is prevented only at the position where the ball mechanism is configured, but the lifting or bending of the remaining portion of the knife is not prevented at all, so that the doctor knife closely adheres to the entire surface of the printing roller along the length of the printing roller. It will be somewhat difficult to make.

Furthermore, in the prior art, since the knife is simply lifted by the ball mechanism, it cannot lift the whole doctor knife which is formed long along the length direction of the printing roller, so that the adhesion between the doctor knife and the printing roller surface is reduced. And the doctor knife does not completely prevent the lifting or bending of the situation.

The present invention has been made to solve the problem of the doctor knife to remove the ink applied to the surface of the printing roller of the conventional printing machine, and is positioned along the longitudinal direction of the spring plate and the plate plate for supporting the doctor knife By constructing an eccentric shaft which lifts the entire spring plate with the same force, the doctor plate is supported evenly throughout the spring plate lifted by the same force by the eccentric shaft, so that the operation time of the doctor knife can be easily installed. It is an object of the present invention to provide a docker knife support device using an eccentric shaft that allows the operator to install the docker knife so as to maintain the horizontal smoothness of the docker knife evenly.

A doctor knife supporting apparatus using the eccentric shaft of the present invention as a means for achieving the above object, the support surface is a support surface through which a plurality of first fastening holes are formed along the longitudinal direction; A doctor knife seated on a support surface of the support, the side of which is exposed to the outside of the support of the support, and the rear side of which is located inside the support; A fixing plate seated on an upper surface of the doctor knife and having a second fastening hole therethrough so as to correspond to first fastening holes holed in the support surface of the supporter; The fixing plate is inserted into the second fastening hole side of the fixing plate and screwed to the first fastening hole of the support consists of a plurality of fixing bolts for fixing the support and the doctor knife and the fixing plate, the rear side of the doctor knife is located The inner side of the support is further formed with a shaft seating groove along the longitudinal direction of the support surface, the eccentric shaft is seated in the shaft seating groove formed in the support surface of the support and a rotation lever is formed at one end and the centrifugal portion is formed on the inner peripheral surface and ; A rotation guide seated in the shaft seating groove formed on the support surface of the support and positioned at the lower end of the centrifugal portion formed in the eccentric shaft to support rotation of the centrifugal portion to guide the eccentric shaft to be eccentrically rotated; A spring plate is disposed between the doctor knife and the fixed plate, and further includes a spring plate that transmits tension to the doctor knife during eccentric rotation of the eccentric shaft to prevent the side of the doctor knife from being bent or lifted.

Doctor knife support device using the eccentric shaft of the present invention has the following effects.

First, a spring plate is formed at the upper side of the doctor knife, and an eccentric shaft extending in the longitudinal direction of the spring plate is formed at the lower end of the spring plate, so that the eccentric shaft is eccentrically rotated to lift the rear side of the spring plate. The side of the plate can evenly press the doctor knife as a whole.

Second, as the doctor knife is pressed evenly by the spring plate as a whole, the horizontal smoothness of the doctor knife can be maintained evenly.

Third, since the horizontal smoothness of the doctor knife is eccentrically rotated by the eccentric shaft and the spring plate lifted by the eccentric shaft, a separate work for adjusting the smoothness of the doctor knife is omitted.

Fourth, since the work for adjusting the smoothness of the doctor knife is omitted, general workers who are not professional installation technicians can easily install the doctor knife by adjusting the smoothness of the doctor knife.

Fifth, the ink removal of the printing roller through the doctor knife can be efficiently performed by preventing the doctor knife from being lifted or bent due to the pressing action of the spring plate.

1 is a configuration diagram showing the configuration of a printing machine equipped with a conventional doctor knife.
Figure 2 is a perspective view showing a conventional doctor knife support device.
Figure 3 is an exploded perspective view showing the configuration of a doctor knife support device using the eccentric shaft of the present invention.
Figure 4 is a partially omitted perspective view showing the operating state of the rotary lever of the doctor knife support device using the inventor eccentric shaft.
Figure 5 is a side view showing the configuration of the doctor knife support device using the eccentric shaft of the present invention.
6 and 7 is a configuration diagram showing the working state of the main portion of the doctor knife support device using the eccentric shaft of the present invention.

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, the term or word used in the present specification and claims is based on the principle that the inventor can appropriately define the concept of the term in order to best describe the invention of his or her own. It should be interpreted as meanings and concepts corresponding to the technical idea of

As shown, the doctor knife supporting device using the eccentric shaft of the present invention is used to remove ink applied to the surface of the printing roller R installed in a printing machine such as a gravure printing machine, and includes a plurality of first fastening holes ( The support surface 12 through which the hole 11 is formed is seated on the support 10 formed along the longitudinal direction, and the support surface 12 of the support 10 so that the side is supported by the support surface of the support 10. (12) The doctor knife 20 is exposed to the outside and the rear side is located on the inner side (10a) of the support 10, and the upper surface of the doctor knife 20 is seated on the support surface of the support (10) In order to correspond to the first fastening holes 11 through which the second fastening holes 31 are inserted, the fixed plate 30 through which the second fastening holes 31 are introduced into the second fastening hole 31 side of the fixed plate 30. Screwed to the first fastening hole 11 of the earth 10 to fix the support 10, the doctor knife 20 and the fixing plate 30 It is composed of a plurality of fixing bolts (40).

In addition, a shaft seating groove 50 is further formed on the inner side 10a of the support 10 in which the rear side of the doctor knife 20 is located, and the support surface 12 extends along the length direction. The eccentric shaft 60 is seated in the shaft seating groove 50 formed on the support surface 12 of the 10, and a rotation lever 61 is formed at one end thereof, and a centrifugal portion 62 is formed at the inner circumferential surface thereof. It is seated in the shaft seating groove 50 formed in the support surface 12 of the earth 10 and positioned at the lower end of the centrifugal part 62 formed in the eccentric shaft 60 to support the rotation of the centrifugal part 62. A rotation guide 70 for guiding the eccentric shaft 60 to be eccentrically rotated, and positioned between the doctor knife 20 and the fixed plate 30, and the doctor knife when the eccentric shaft 60 is eccentrically rotated. A spring flap that transmits tension to the 20 to prevent the side of the doctor knife 20 from bending or lifting. Bit 80 is made longer included.

According to the present invention configured as described above, the rear side of the spring plate 80 is lifted by the eccentric shaft 60 so that the side of the spring plate 80 presses the doctor knife 20 strongly, and the doctor knife ( The doctor knife 20 is prevented from being lifted or bent by pressing the film evenly and smoothly along the longitudinal direction of 20 to remove the ink evenly applied to the entire surface of the printing roller R. FIG.

That is, the doctor knife 20 seated on the support surface 12 of the support 10 and fixed by the spring plate 80 and the fixed plate 30 is an inner side 10a of the support 10. The spring plate is located on the rear side of the spring plate 80, that is, the inner side (10a) of the support (10) by the eccentric rotation of the eccentric shaft (60) configured in the shaft seating groove (50) formed in the The rear side of the support 80 is lifted, and at this time, the eccentric shaft 60 is formed long along the longitudinal direction of the support 10, so that the support surface 12 of the support 10 can be As the whole of the spring plate 80 configured along the longitudinal direction is lifted, and as a result, the doctor knife 20 is pressed equally throughout the longitudinal direction of the doctor knife 20 by the spring plate 80, Line of the doctor knife 20 exposed outside the support surface 12 of the support 10 This can unfold uniformly can be in close contact along the length of the doctor knife printing roller (R) that is the side of the contact 20 as a whole.

Therefore, the ink removal work for the remaining portion except for the ink applied to the printing groove (R1) of the printing roller (R) can be carried out neatly and evenly.

The eccentric shaft 60 is eccentrically rotated by an operator turning the rotary lever 61. When the rotary lever 61 is turned, the centrifugal part 62 of the eccentric shaft 60 seats the shaft. The spring plate 80 is centrifugally rotated by the rotation guide 70 which is seated in the groove 50 and supports the lower end of the centrifugal part 62 of the eccentric shaft 60, and the eccentric shaft 60 is eccentrically rotated. It is possible to lift the rear side of.

In addition, since the doctor knife 20 is pressed by the spring plate 80, the force of the spring plate 80 to press the doctor knife 20 by the tension of the spring plate 80 is the doctor knife 20. By evenly and strongly transmitted to the line side of the c), the doctor knife 20 is more easily in close contact with the surface of the printing roller R.

As described above, the present invention has been described with reference to a preferred embodiment of the present invention as being capable of various modifications, but the present invention is not limited to such an embodiment, and the embodiment is simply applied in combination with the known art. Together with the claims and the detailed description of the present invention it will be seen that the technology that can be used by those skilled in the art that the present invention belongs to be included in the technical scope of the present invention.

10: Supporting tool 10a: Supporting tool inner side
11: first fastening hole 12: support surface
20: doctor knife
30: fixed plate 31: the second fastening ball
40: fixing bolt 50: shaft seating groove
60: eccentric shaft 61: rotary lever
62: centrifugal portion 70: rotation guide
80: spring plate 81: third fastening
R: Printing Roller

Claims (1)

A support 10 having a plurality of first fastening holes 11 through which support surfaces 12 are formed along the length direction;
The doctor seated on the support surface 12 of the support 10 so that the side is exposed to the outside of the support surface 12 of the support 10 and the rear side is located on the inner side (10a) of the support 10 A knife 20;
The fixing plate 30 is seated on the upper surface of the doctor knife 20 and the second fastening hole 31 is formed so as to correspond to the first fastening holes 11 through the support surface of the support 10. ;
The fixing plate 30 is inserted into the second fastening hole 31 side and is screwed into the first fastening hole 11 of the support 10 so that the support 10 and the doctor knife 20 and the fixing plate Consists of a plurality of fixing bolts 40 for fixing 30,
A shaft seating groove 50 is further formed at the inner side 10a of the support 10 at which the rear side of the doctor knife 20 is located, the support surface 12 along the longitudinal direction,
An eccentric shaft 60 seated in the shaft seating groove 50 formed in the support surface 12 of the support 10 and having a rotation lever 61 formed at one end thereof, and a centrifugal portion 62 formed at an inner circumferential surface thereof; ;
It is seated in the shaft seating groove 50 formed in the support surface 12 of the support 10 and positioned at the lower end of the centrifugal part 62 formed in the eccentric shaft 60 to rotate the centrifugal part 62. A rotation guide 70 supporting the eccentric shaft 60 so as to be eccentrically rotated;
Positioned between the doctor knife 20 and the fixed plate 30 and transfers the tension to the doctor knife 20 during the eccentric rotation of the eccentric shaft 60 to bend or lifted the side of the doctor knife 20 Docker knife support device using an eccentric shaft, characterized in that further comprises a spring plate to prevent it.

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