KR100956085B1 - Apparatus for cleaning ink head nozzles - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus for an ink head nozzle, the apparatus for cleaning a nozzle of an ink head provided in a labeling apparatus for steel, comprising: a main body having an accommodating space in which an ink head is positioned on an upper side and an upper portion thereof is opened; It is located below the head, and the solvent injection means for injecting an organic solvent toward the nozzle provided on the bottom surface of the ink head, and provided in contact with the bottom surface of the ink head, brushing means for brushing the nozzle. Therefore, the present invention not only minimizes the number of people required for cleaning the nozzle by automating the cleaning operation of the nozzle of the ink head, but also blocks the harm to the operator due to the use of an organic solvent such as thinner, and the ink head. To make the cleaning of the nozzles easy and quick, improving the operating rate of the steel labeling device, and excellent cleaning effect on the nozzles of the ink heads, which reduces the purging cycle of the nozzles and improves the print quality of the ink heads. It is possible to increase the efficiency of the labeling process by stabilizing the labeling device of the steel by increasing the cleaning periods for the nozzles of the ink head on a regular basis.

Ink head, nozzle, organic solvent, solvent jetting means, brushing means

Description

Apparatus for cleaning ink head nozzles

The present invention minimizes the number of people required to clean the nozzle of the ink head by automating the cleaning operation of the nozzle of the ink head, makes it easy and quick to clean the nozzle of the ink head, and has an excellent cleaning effect. It relates to a cleaning device of an ink head nozzle for making.

In general, in shipyards using steel, rust and foreign substances are removed by shorting work and then primers are applied to the steel. A labeling process is performed to mark the identification so as to confirm the information.

The labeling process of such steels has been performed by hand in the past, and in order to make it easier, an automatic labeling device for steels has been developed. As a related art related to the automatic labeling device for such steels, Korean Patent No. 1996-040572, Tree robot ”, Korean Patent Application Publication No. 1996-040657,“ Tool assembly for multihead of capital letter inkjet printer ”, and such conventional steel automatic labeling device moves steel phase to mark characters or symbols on steel materials. An ink head is provided.

Referring to the accompanying drawings, a labeling apparatus for a steel material having an ink head in order to perform a steel labeling process is as follows.

1 is a perspective view showing a labeling apparatus for steel according to the prior art. As shown, the labeling device 10 of the steel according to the prior art moves and rotates on the conveying means 20 for conveying the steel 1 and the steel 1 conveyed by the conveying means 20. And marking means 30 for marking with ink head 32.

On the other hand, the steel labeling device 10 is a measuring means for detecting the conveying speed of the steel (1), and receives the detection signal output from the measuring means receives the ink head 32 in accordance with the conveying speed of the steel (1) It may further include a control unit for controlling the marking means 30 to mark by moving and rotating.

The conveying means 20 can have various configurations for conveying the steel 1, preferably a conveyor system is used.

The marking means 30 includes a gantry 31 installed to intersect the conveying direction of the steel material 1, an ink head 32 installed on the gantry 31, and an ink head 32 along the gantry 31. The first head transfer means 33 for transferring, the second head transfer means 34 for transferring the ink head 32 from the gantry 31 along the transfer direction of the steel material 1, and the ink head 32. And a head lifting means 35 for raising and lowering, and a head rotating means 36 for rotating the ink head 32.

The marking means 30 moves the ink head 32 along the X, Y and Z axes by the first and second head transfer means 33 and 34, the head lifting means 35 and the head rotating means 36. And also rotate.

As shown in FIG. 2, the ink head 32 is provided with a plurality of nozzles 32a on the lower surface of the body 32b of the rectangular parallelepiped, which can represent the grade of the steel 1 in color, thereby opening the nozzle 32a. By marking the surface of the steel 1 with ink, it consists of two rows so as to superimpose information such as letters and numbers.

On the other hand, the nozzle 32a of the ink head 32 is prevented from clogging and the nozzle 32a is periodically purged to improve the print quality due to the cleanliness of the nozzle 32a. After stopping the head 32 at a predetermined position, ink is ejected by opening the nozzle 32a, and further, the nozzle 32a is cleaned using an organic solvent such as a thinner.

As described above, additional personnel are required by manually cleaning the nozzle of the ink head provided in the steel labeling apparatus according to the prior art, and an operator who manages the steel labeling apparatus leaves the work place for cleaning the nozzle. By moving the head to the position where the nozzle is cleaned, the stop time of the labeling device of the steel is not only long but also very troublesome, and has a problem that it is harmful to the human body due to the cleaning operation using volatile organic compounds such as thinner.

The present invention not only minimizes the number of people required for the cleaning operation of the nozzle of the ink head, but also blocks the harm to the operator due to the use of an organic solvent such as a thinner, and facilitates the operation of cleaning the nozzle of the ink head. It is also made quickly and has an excellent cleaning effect.

An apparatus for cleaning an ink head nozzle according to the present invention is an apparatus for cleaning an ink head nozzle provided in a steel labeling apparatus, the main body having an accommodating space formed so that an ink head is located on an upper side and an upper portion thereof is opened, and Located below, solvent injection means for injecting an organic solvent toward the nozzle provided on the bottom surface of the ink head, and contacting the bottom surface of the ink head, and brushing means for brushing the nozzle.

The cleaning apparatus of the ink head nozzle according to the present invention has the following effects.

First, by automating the cleaning of the nozzles of the ink head to minimize the number of people required to clean the nozzles, and also to block the harm to the operator due to the use of organic solvents such as thinner,

Secondly, the operation of cleaning the nozzle of the ink head can be made easily and quickly, thereby improving the operation rate of the steel labeling device.

Third, the cleaning effect of the nozzle of the ink head is excellent, which reduces the purging cycle of the nozzle and increases the print quality of the ink head.

Fourth, the cleaning cycle for the nozzle of the ink head can be carried out regularly to stabilize the labeling device of the steel material has the effect of increasing the efficiency of the labeling process.

In the present invention, the solvent jetting means injects an organic solvent to the bottom of the ink head located above the main body having the accommodation space, and the nozzle of the ink head is cleaned by brushing the nozzle provided on the bottom of the ink head by the brushing means.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

3 is a perspective view showing a cleaning apparatus of the ink head nozzle according to the present invention, and FIG. 4 is a perspective view showing a moving plate of the cleaning apparatus of the ink head nozzle according to the present invention. As shown, the cleaning apparatus 100 of the ink head nozzle according to the present invention includes a main body 110 on which the ink head 32 (shown in FIG. 6) is located above and a nozzle provided on the bottom surface of the ink head 32. As shown in FIG. 6, solvent injection means 120 for injecting an organic solvent toward 32a and brushing means 130 for brushing the nozzle 32a of the ink head 32.

The main body 110 is open at the top toward the ink head 32 to receive ink sprayed for purging from the nozzle 32a of the ink head 32 or organic solvent sprayed from the solvent spraying means 120. In order to easily discharge the ink or organic solvent contained in the accommodation space 111 to the outside, the outlet 113 is formed on the bottom 112 and the bottom 112 is discharged. It is formed to be inclined downward toward 113.

The body 110 may be provided with a valve for opening and closing the outlet 113, a recovery tank (not shown) for recovering the organic solvent or ink discharged through the outlet 113 may be provided as necessary. .

 The main body 110 is installed so as to be spaced apart from the ground by being supported by the frame 160 installed within the moving range of the ink head 32 (shown in FIG. 6), and the height adjusting means 162 provided in the frame 160. The height is adjusted from the ground by

Height adjusting means 162 may be made of a single, but preferably made of a plurality to easily adjust the tilting or horizontality of the frame 160, each of the adjustment bolt 162a to the pedestal 163 is installed on the ground ) Is installed vertically, the top of the adjustment bolt (162a) is fixed to the bottom of the frame 160 by a plurality of adjustment nuts (162b), depending on the screw fastening position of the adjustment nut (162b) on the adjustment bolt (162a) The height will be adjusted.

The solvent jetting means 120 is installed below the ink head 32, and receives an organic solvent such as a thinner for dissolving ink from an external organic solvent supply part (not shown), and thus the bottom surface of the ink head 32. The organic solvent is sprayed toward the nozzle 32a installed in the nozzle.

The solvent jetting means 120 is composed of a plurality of jetting nozzles 121 arranged in the width direction of the bottom of the ink head 32 (shown in FIG. 6) to jet organic solvents respectively.

The injection nozzle 121 has an inner diameter such that the organic solvent to be injected is not excessively diffused, preferably has an inner diameter of 0.3 to 0.7 mm, more preferably has an inner diameter of 0.5 mm.

The injection nozzle 121 is sprayed by receiving an organic solvent from the outside, for this purpose, a regulator (182) supplies a pneumatic pressure to the organic solvent supply, that is, the organic solvent container, through which the organic solvent is delivered to the solenoid valve 122 To be supplied to each spray nozzle 121 through the manifold 184.

The brushing means 130 is provided in contact with the bottom surface of the ink head 32 (shown in FIG. 6) to brush the nozzles 32a (shown in FIG. 6) to separate the ink dissolved by the organic solvent from the nozzle 32a. .

On the other hand, the solvent jetting means 120 and the brushing means 130 may be configured to clean the nozzle 32a of the ink head 32 by reciprocating at the bottom of the stationary ink head 32, as in the embodiment, the ink head It is preferable to spray the organic solvent on the bottom surface of the ink head 32 moving along the upper side by being fixed within the movement range of 32, and to remove foreign substances from the nozzle 32a.

The cleaning apparatus 100 of the ink head nozzle according to the present invention includes the moving plate 140 for installing the solvent jetting means 120 and the brushing means 130, and the moving plate 140 for cleaning the nozzle 32a. And moving means 150 for reciprocating between the working position for and the standby position for ejecting ink for purging from the nozzle 32a.

Moving plate 140 is made of one or two or more, when made of two or more are installed so as to be arranged horizontally on the upper surface of the main body 110, and each of the solvent injection means 120 and brushing means 130 is installed In this embodiment, in the case of the solvent injection means 120, three injection nozzles 121 are installed in the width direction of the ink head 32 for each of the moving plates 140. At this time, the solenoid valve 122 corresponding to the number of the moving plate 140 is provided to control the injection of the injection nozzles 121 each of the solenoid valve 122 is installed on one moving plate 140.

On the other hand, the brushing means 130 may be made of one or two or more brushes of various forms, in this embodiment, the bottom surface of the ink head 32 passing through the solvent jetting means 120 is sequentially in contact with the organic solvent And the straight brush 131 and the roller brush 132 which separate the dissolved ink from the nozzle 32a.

The straight brush 131 is fixed to the body 131a such that the brushes 131b are arranged upward in a straight line, and the body 131a is fixed on the moving plate 140 by the first bracket 141.

The roller brush 132 is provided with a brush 132b on an outer circumferential surface of a rotating body (not shown) having a rotating shaft 132a, and the second bracket 142 having both ends of the rotating shaft 132a installed on the moving plate 140. It is installed by being rotatably fixed by).

The roller brush 132 is elastically supported by the elastic member 143 to be in close contact with the bottom of the ink head 32 by an elastic force. For this purpose, the second bracket 142 rotatably fixing the roller brush 132 is provided. Installed by the stripper bolt (143a) to move in the upper and lower limited range from the upper surface of the moving plate 140, the coil spring type elastic member 143 is fitted to the stripper bolt (143a) to be mounted to the second The bracket 142 is elastically supported together with the roller brush 132.

The brushes 131b and 132b of the straight brush 131 and the roller brush 132 are made of a material that is excellent in removing foreign matter attached to the nozzle 32a even when the load is less applied when the ink head 32 is in contact with the ink head 32. For example, a brush may be used, and the present invention is not limited thereto, and may have a material or a structure excellent in absorption and adhesion to foreign substances such as ink separated by brushing.

The moving plate 140 is provided with a scattering preventing plate 144 around the solvent spraying means 120 to prevent the organic solvent sprayed from the solvent spraying means 120 from scattering.

The scattering prevention plate 144 has a "c" shape in which one side is opened so that the organic solvent on the moving plate 140 moves in order to flow into the accommodation space 111 of the main body 110 in the present embodiment, and the moving plate A sealing member (not shown) made of a material such as rubber for preventing passage of the organic solvent is provided between the 140 and 140.

The moving plate 140 is formed with a collecting groove 145 for collecting organic solvent along the edge, and the discharge hole 146 at a position adjacent to the side on which the shatterproof plate 144 is opened on the collecting groove 145. By forming a to discharge the organic solvent collected in the collection groove 145 through the discharge hole 146 to the receiving space 111 of the main body 110 located below.

The moving plate 140 is provided with air injection means 170 for preventing the organic solvent from scattering or injecting air so that the organic solvent flows into the accommodation space 111 of the main body 110.

The air injection means 170 is composed of first and second air injection pipes 171 and 172 having a plurality of injection holes 171a and 172a along the longitudinal direction while supplying air to one side through an external pneumatic supply part, As the first and second air injection pipes 171 and 172 are installed side by side up and down inside the shatterproof plate 144, as shown in FIG. 5, the injection pressure of the air injected from the first air injection pipe 171. By forming an air curtain to block the organic solvent scattered to the outside of the scattering prevention plate 144, the organic solvent on the moving plate 140 by the injection pressure of the air injected from the second air injection pipe 172 It moves to the discharge hole (146) side.

The moving means 150 reciprocates the moving plate 140 between the working position on the upper side of the main body 110 and the standby position deviating from the upper side of the main body 110.

The moving means 150 may have a configuration for linearly moving the moving plate 140 when moving. In this embodiment, the moving plate 140 is rotated at a predetermined angle, for example, 90 degrees. The rotating shaft 151 is fixed vertically, the rotating body 152 is fixed horizontally to the rotating shaft 151, the piston rod (not shown) of the pneumatic cylinder 153 to the rotating body 152, one or more links The rotating shaft 151 is connected to the members 154 and 155 so that the moving plate 140 stopped at the working position as shown in FIG. 3 by the driving of the pneumatic cylinder 153 reaches the standby position as shown in FIG. 7. Rotate it at an angle of 90 degrees around it.

The rotation shaft 151 is rotatably supported by the rotation support part 161 provided in the frame 160 supporting the main body 110 in this embodiment.

The rotating body 152 is fixed to the rotating shaft 151, one side of which extends horizontally from the side of the rotating shaft 151 is hinged to the link members (154, 155).

The pneumatic cylinder 153 is supplied with air pressure from an external pneumatic supply unit (not shown), so that the water is removed by the water removal means 181 installed on the supply path of the pneumatic pressure, and the supply of the drive valve 183 By operation, the supply of pneumatic pressure is controlled.

On the other hand, the drive valve 183 is composed of a solenoid valve installed in the frame 160, for example, to not only control the supply of pneumatic pressure supplied to the pneumatic cylinder 153, but also to inject air from the air injection means 170 The air injection means 170 controls the supply of pneumatic pressure together. At this time, the air injection means 170 is supplied with air pressure in a state where water is removed by passing through the water removal means 181, and a pneumatic adjustment valve (not shown) is installed on the pneumatic supply path to control the injection pressure. do.

The link members 154 and 155 consist of the first and second link members 154 and 155 in this embodiment, such that the first link member 154 is hinged to the piston rod of the pneumatic cylinder 153 and any one rotating body 152. In addition, the second link member 155 is connected between the rotating body 152 by a hinge coupling, thereby simultaneously rotating the pair of moving plates 140 by the driving of a single pneumatic cylinder 153. Let's do it.

The operation and action of the cleaning apparatus 100 of the ink head nozzle according to the present invention having such a configuration are as follows.

As shown in FIG. 6, the ink head 32 has a first and second head transfer means 33, 34 (shown in FIG. 1), a head lift means 35 (shown in FIG. 1), and head rotation for cleaning. When the means 36 (shown in FIG. 1) enter the upper side of the main body 110, the moving plate 140 is driven by the moving means 150 and the solvent dispensing means 120 and the brushing means 130. It rotates together and is located above the main body 110, which is a working position for cleaning the nozzle 32a, and the ink head 32 passes through the solvent jetting means 120 for jetting the organic solvent, thereby removing the brushing means 130. The nozzle 32a of the ink head 32 is cleaned by moving in a pressed state about 5 mm, and the ink head 32 rises after passing through the brushing means 130 and returns to the position to enter the main body 110 again. After that, the cleaning is repeated three times.

An organic solvent, such as a thinner or the like, sprayed from the solvent ejection means 120 by opening the solenoid valve 122 for cleaning the nozzle 32a of the ink head 32 to the nozzle 32a of the ink head 32. Sprayed to dissolve the ink attached to the nozzle 32a and its surroundings, and the bottom surface of the ink head 32 passing through the solvent jetting means 120 is the straight brush 131 and the roller brush 132 of the brushing means 130. ) By being in close contact with and brushing sequentially to separate foreign matters such as ink attached to the bottom surface of the ink head 32 including the nozzle 32a by the straight brush 131, the roller brush 132 is attached to such foreign matters Absorb and wipe off.

The roller brush 132 presses the bottom surface of the ink head 32 by the elastic force of the elastic member 143 to reduce the load caused by the pressurization of the ink head 32 while maintaining excellent brushing efficiency with the ink head 32. Raised.

On the other hand, the foreign matter including the ink separated from the ink head 32 and the organic solvent injected from the solvent injection means 120 is introduced into the receiving space 111 of the main body 110 is accommodated, the opening of the discharge port 113 It is discharged to the outside through the discharge port 113 along the inclined bottom surface 112.

On the other hand, the organic solvent injected from the solvent injecting means 120 is not only prevented from being scattered to the outside by the scattering prevention plate 144, but also collected in the collecting groove 145 of the moving plate 140 is discharged hole 146 It is discharged to the receiving space 111 of the main body 110 located below through the organic solvent by the injection pressure of the air injected from the injection holes (171a, 172a) of the first and second injection pipes (171, 172) It not only prevents the scattering beyond the scattering prevention plate 144 but also allows the organic solvent on the moving plate 140 to flow to the outlet hole 146 to reduce the organic solvent that goes out of the apparatus, thereby ultimately increasing the recovery rate of the organic solvent. .

In addition, the height adjusting means 162 of the frame 160 together with the main body 110 to clean the nozzle 32a of the ink head 32 together with the height of the solvent jetting means 120 and the brushing means 130. In addition, the height adjustment means 162 may be adjusted to suitably adjust the inclination of the moving plate 140 by controlling them differently so that the organic solvent on the moving plate 140 may be collected. .

When the cleaning of the nozzle 32a of the ink head 32 is finished, the moving plate 140 is driven to the standby position deviating from the upper side of the main body 110 by the driving means 150 as shown in FIG. Rotate 90 degrees to reach, so that the ink head 32 is moved above the main body 110 for purging so as not to cause interference when spraying ink through the nozzle 32a.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. And will be included in the described technical idea.

1 is a perspective view showing a labeling device for steel according to the prior art,

Figure 2 is a bottom view showing the ink head provided in the labeling device for steel according to the prior art,

3 is a perspective view showing a cleaning apparatus of an ink head nozzle according to the present invention;

4 is a perspective view showing a moving plate of the cleaning apparatus of the ink head nozzle according to the present invention;

5 is a cross-sectional view showing the action of the air ejecting means of the cleaning apparatus of the ink head nozzle according to the present invention;

6 is a perspective view showing the action of the cleaning apparatus of the ink head nozzle according to the present invention;

7 is a perspective view showing a state in which the moving plate of the cleaning apparatus of the ink head nozzle according to the present invention is stopped at the standby position.

<Explanation of symbols for the main parts of the drawings>

110: body 111: accommodation space

112: bottom 113: outlet

120: solvent injection means 121: injection nozzle

122: solenoid valve 130: brushing means

131: straight brush 131a: body

131b: Brush 132: Roller Brush

132a: axis of rotation 132b: brush

140: moving plate 141: first bracket

142: second bracket 143: elastic member

143a: stripper bolt 144: shatterproof plate

145: collecting groove 146: discharge hole

150: movement means 151: rotation axis

152: rotating body 153: pneumatic cylinder

154: first link member 155: second link member

160: frame 161: rotation support

162: height adjustment means 162a: adjustment bolt

162b: adjusting nut 163: stand

170: air injection means 171: first injection pipe

171a: injection hole 172: second injection pipe

172a: injection hole 181: water removal means

182 regulator 183 drive valve

184: manifold

Claims (11)

An apparatus for cleaning a nozzle of an ink head provided in a steel labeling device, A main body having an accommodation space in which the ink head is located on an upper side, and an upper portion thereof is opened; Solvent spraying means located below the ink head and spraying an organic solvent toward a nozzle provided on a bottom surface of the ink head; Brushing means for contacting the bottom surface of the ink head, for brushing the nozzle Cleaning apparatus of the ink head nozzle comprising a. The method of claim 1, The main body, The outlet is formed on the bottom surface to discharge the organic solvent or ink contained in the accommodation space to the outside, the bottom surface is formed to be inclined downward toward the outlet A cleaning device for an ink head nozzle, characterized in that. The method of claim 1, One or more moving plates on which the solvent ejecting means and the brushing means are installed; Moving means for reciprocating the moving plate between a working position above the main body and a standby position deviating from the upper main body Cleaning apparatus of the ink head nozzle comprising a. The method of claim 3, wherein The means for moving, The rotating shaft is fixed to the moving plate perpendicular to the moving plate, the rotating body is fixed horizontally to the rotating shaft, the piston rod of the pneumatic cylinder is connected to the rotating body by one or more link members, the movement by the drive of the pneumatic cylinder For rotating plates A cleaning device for an ink head nozzle, characterized in that. The method according to claim 1 or 3, The brushing means, A straight brush with the brushes lined up, Roller brushes are provided on the outer circumference and are rotatably installed Cleaning apparatus of the ink head nozzle comprising a. The method of claim 5, The roller brush, Elastically supported by an elastic member to be in close contact with the bottom of the ink head by elastic force A cleaning device for an ink head nozzle, characterized in that. The method according to claim 3 or 4, The moving plate, A scattering prevention plate is provided around the solvent ejecting means to prevent the organic solvent sprayed from the solvent ejecting means from scattering. A cleaning device for an ink head nozzle, characterized in that. The method of claim 7, wherein The moving plate, Collection grooves for collecting organic solvents are formed along the edges, and discharge holes for discharging organic solvents downward are formed at positions adjacent to the side where the scattering prevention plate is opened on the collection grooves. A cleaning device for an ink head nozzle, characterized in that. The method according to claim 3 or 4, The moving plate, Air spraying means is provided for preventing the organic solvent from scattering or for injecting air so that the organic solvent flows into the receiving space of the main body. A cleaning device for an ink head nozzle, characterized in that. The method of claim 9, The air injection means, Comprising a first and a second air injection pipe is formed with a plurality of injection holes along the longitudinal direction, the first and second air injection pipe is installed side by side up and down A cleaning device for an ink head nozzle, characterized in that. The method of claim 1, The main body is installed, the frame is provided with one or two or more height adjusting means for adjusting the height of the main body The cleaning device of the ink head nozzle further comprising.

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