JP2006027030A - Screen vertical printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen vertical printing machine which simplifies recovery of residual ink and supply and cleaning of ink by a minimal number of components without providing an ink supply mechanism. <P>SOLUTION: The printing machine has a horizontal table 4 which supports a box object 15 such as a fish box so that a printing surface thereof is vertical, a printing screen plate 5 which is fitted vertically to the front of a moving body 3 moves to come into contact with and to detach from the outer surface of the box object 15 supported by the horizontal table 4, a flooding doctor 6 which moves slidably and applies ink to the screen plate 5 and a squeegee 7 which presses the applied ink to transfer, and conducts screen printing on the outside of the box object. Herein ink lateral leak preventing plates 13 are provided at the opposite ends of the squeegee 7 and the machine is so constituted that the tip of the squeegee 7 and the tips of the ink lateral leak preventing plates 13 always come into contact with the vertical surface of the screen plate 5 together and that the flooding doctor 6 and the squeegee 7 slide from below upward. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a printing machine for screen-printing a predetermined mark or the like on the side of a box made of foamed polystyrene widely used for boxes such as fish boxes and vegetable boxes. Specifically, it is a vertical type printing machine capable of simultaneously printing on both sides.

Conventionally, when screen printing is performed on the side of a box such as a foam box made of foamed polystyrene, it is supported on a horizontal table with the printed side of the box made of foam facing up, and the upper surface of the printed side. In general, a printing machine in which a screen plate is mounted horizontally is widely used.

However, such a configuration has a problem in that workability is poor because one side is first printed and then reversed by 180 degrees to print the other side again.

As an improvement measure, as shown in Patent Document 1, a method has been proposed in which a screen plate is mounted vertically and printing can be performed simultaneously on both sides so as to sandwich a box. The main part of this proposal is shown in FIG. However, in this method, since the spatula part 14 is provided with an ink supply mechanism (described in FIG. 6) in which the ink tank 26 and the ink supply pipe 27 are combined, the replenishment of the ink is performed by adjusting the pressure of the ink tank 26 and the sealing lid. Is required to open and close each time, and a solvent is put into the ink tank 26 and compressed air is fed into the compressed air connection port 25 while leaving a little ink in the ink tank 26 and the ink supply pipe 27 at the end. This method, which is actually washed, causes a loss of ink recovery, and the ink is sprayed together with the solvent, which is not preferable in the occupational safety and health law.
JP 7-171945 A

The present invention provides a printing function with a minimum number of parts without providing an ink supply mechanism that combines an ink tank 26 and an ink supply pipe 27 in the spatula portion 14 as shown in Patent Document 1 (described in FIG. 6). A screen vertical printing machine that can recover 100% of the residual ink without damaging the ink, and can be easily refilled with ink, so that it can be easily cleaned. Is to provide.

The screen vertical printing machine according to claim 1 (hereinafter referred to as "1") is provided with an ink side leakage prevention plate 13 at both ends of the squeegee 7, and the tip of the squeegee 7 and the ink Both ends of the side leakage prevention plate 13 are always in contact with the vertical surface of the screen plate 5, and when the ink is pressed and transferred, the ink returning doctor 6 and the squeegee 7 are moved from the bottom to the top. It is characterized by being made to slide.

The screen vertical printing machine according to claim 2 (hereinafter referred to as “the present invention 2”) is a squeegee 7 as a method of providing the side leakage prevention plate 13 on the squeegee 7 according to the present invention 1. The permanent magnets 16 are respectively embedded in both side surfaces of the ink, and the ink side leakage prevention plate 13 is made of iron.

The screen vertical printing machine according to claim 3 (hereinafter referred to as “3”) is provided with an air cylinder 20 for squeegee 7 printing pressure behind the squeegee 7 according to the present invention 1 and 2. The squeegee 7 printing pressure air cylinder 20 is provided with a pressing spring 21, and the tip of the squeegee 7 and the tip of the ink side leakage prevention plate 13 are both relative to the vertical surface of the screen plate 5. It is characterized in that it is always in contact with the force of the push spring 21 at the time of a power failure or air-leakage due to the force of the air cylinder.

In the first aspect of the invention, the squeegee 7 is provided with the ink side leakage prevention plate 13, and the tip of the squeegee 7 and the tip of the ink side leakage prevention plate 13 are both on the vertical surface of the screen plate 5. Since it is always in contact with the ink, it is not necessary to provide a separate ink supply device or device, and it is only necessary to place the ink directly on the squeegee, making it easy to replenish ink during printing. Thus, after the operation is completed, the residual ink on the squeegee can be collected 100%.

In the present invention 2, as a method of providing the side leakage prevention plate 13 on the squeegee 7, permanent magnets 16 are embedded in both side surfaces of the squeegee 7, and the side leakage prevention plate 13 is made of iron. Therefore, the squeegee 7 and the side leakage prevention plate 13 can be attached and detached with one touch, which is very convenient for cleaning.

In the third aspect of the present invention, the push spring 21 is provided in the lot of the air cylinder 20 for squeegee printing pressure, so that the tip of the squeegee 7 and the tip of the ink side leakage prevention plate 13 are both perpendicular to the screen plate 5. Since the surface is always kept in contact with the surface, there is no fear of ink leakage even in the event of a power failure or air leak.

A squeegee 7 in which the screen plate 5 is fixed to the moving body 3 shown in FIG. 2 with the air cylinder 10 for mounting the screen plate 5 and the side leakage prevention plate 13 shown in FIG. The squeegee 7 mounting holder 18 is fixed with a one-touch fitting 24. Next, the ink return doctor 6 shown in FIG. 5 is fixed to the ink return doctor 6 mounting holder 12 with the one-touch fitting 24. Next, hold the holder 12 for installing the ink return doctor 6 with the left hand, pull it away from the screen plate 5 along the slider 17 for the ink return doctor 6, and hold the spear containing ink (shucream) with the right hand. Then, the ink is put on the surface of the squeegee 7 with a scissors. Next, the left hand is separated from the holder 12, and the tip of the ink return doctor 6 comes into contact with the screen plate 5 due to the weight of the ink return doctor 6, and the printing surface of the box 15 such as a fish box is next. When it is stacked on the horizontal table 4 so as to be vertical and the operation switch is turned on, the opposing moving body 3 is activated and comes into contact with the side surface of the stacked box 15. Next, the squeegee 7 is applied with printing pressure, slides from bottom to top, presses and transfers ink, and automatically stops sliding at the upper limit. The top of the squeegee slides from top to bottom together with the ink return doctor 6 with the tip of the squeegee lightly in contact with the screen plate 5 and stops at the lower limit. finish. Next, the stacked box 15 is replaced and the operation switch is turned ON again.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a side view of the printing press of the present invention. The screen vertical printing machine 1 shown in FIG. 2 includes a stand 2, a moving body 3, a horizontal table 4, a screen plate 5, an ink returning doctor 6, a squeegee 7, The lifting device 8 shown in FIG. 3, the air cylinder 9 for driving the moving body 3 shown in FIG. 2, the air cylinder 10 for installing the screen plate 5, the base 11, and the ink returning doctor 6 are installed. Holder 12, ink side leakage prevention plate 13, spatula 14 shown in FIG. 5, box 15 shown in FIG. 2, permanent magnet 16 shown in FIG. 1, and ink return doctor 6 shown in FIG. Slider 17, squeegee 7 mounting holder 18, squeegee 7 slider 19, squeegee 7 printing pressure air cylinder 20, pressing spring 21, width adjustment handle 22 shown in FIG. 2, elevating mechanism 23, It is comprised with the one-touch metal fitting 24 of FIG.

Reference numeral 1 in FIG. 2 denotes a screen vertical printer.

  The gantry 2 shown in FIG. 2 has a power supply unit, an operation unit, a control unit, and a main power unit. When a box 15 is placed on the horizontal table 4 and an operation switch is pressed, the control unit program automatically One screen printing process is performed.

The moving body 3 shown in FIG. 2 is provided with a screen plate 5, and an air cylinder 9 for driving the moving body 3 for making the screen plate 5 contact and separate from the printing surface of the box 15. 3 is installed to slide the squeegee 7 up and down.

The horizontal table 4 shown in FIG. 2 is provided at an intermediate position between the opposed moving bodies 3 and is used for stacking the boxes 15, which is narrower than the width of the boxes 15 and changes the printing position in the vertical direction. In this case, an elevating mechanism 23 is attached below the horizontal table 4.

The screen plate 5 shown in FIG. 2 is detachably mounted on the moving body 3 vertically by an air cylinder 10 for mounting the screen plate 5 attached to the moving body 3.

The ink repellant doctor 6 shown in FIG. 5 is detachably mounted on the ink repellant doctor 6 mounting holder 12, and the ink repellant doctor 6 mounting holder 12 is inclined at about 45 degrees with respect to the horizontal. The tip of the ink return doctor 6 is attached to the slider 17 for the ink return doctor 6 and the weight of the ink return doctor 6 and the weight of the ink return doctor mounting holder 12 are as follows. Always contact the vertical surface of the screen plate 5, and after the squeegee 7 has been slid and transferred from bottom to top, the ink is applied to the vertical surface of the screen plate 5 while applying the ink in a thin film. Return to the position.

The squeegee 7 shown in FIG. 1 is provided with ink side leakage prevention plates 13 at both ends of the squeegee 7 and is detachably attached to the squeegee 7 attachment holder 18 shown in FIGS. ,
The tip of the squeegee 7 and the tip of the ink side leakage prevention plate 13 are always in contact with the vertical surface of the screen plate 5, and when the ink is pressed and transferred, the ink returning doctor 6 and the scanner are scanned. The screw 7 is configured to slide from the bottom to the top.

The up-and-down device 8 shown in FIG. 3 is attached to the moving body 3 and is provided with a drive mechanism that moves the spatula portion 14 shown in FIG.

A moving body 3 driving air cylinder 9 shown in FIG. 2 is mounted on the base 11 and moves the moving body 3 to and from the box 15.

The air cylinder 10 for mounting the screen plate 5 shown in FIG. 2 is attached to the moving body 3 and the screen plate 5 is mounted on the front surface of the moving body 3 with one touch.

The base 11 shown in FIG. 2 is provided on the mount 2 and is provided with a width adjusting handle 22 between the movable bodies 3 facing when the width of the box 15 is changed.

The ink repellant doctor 6 mounting holder 12 shown in FIG. 5 is stretched horizontally on each of the ink repellant doctor 6 sliders 17 provided at an angle of about 45 degrees with respect to the horizontal, and is mounted vertically. The ink return doctor 6 is attached so as to be parallel to the screen plate 5 and is detachably mounted by the one-touch fitting 24 shown in FIGS.

The ink side leakage prevention plate 13 shown in FIG. 1 is made of iron and can be attached to and detached from the permanent magnet 16 embedded in both side surfaces of the squeegee 7 with a single touch. This prevents the side leakage of the ink placed on the surface of 7 and dismantles it during cleaning so that the corner portion shown in FIG. 1 disappears and cleaning becomes easy.

  The spatula portion 14 shown in FIG. 5 is composed of three points: a squeegee 7, an ink side leakage prevention plate 13 attached to the squeegee 7, and an ink return doctor 6.

A box 15 shown in FIG. 2 is a printing material on which both sides are simultaneously screen-printed.

The permanent magnet 16 shown in FIG. 1 is for making it possible to attach and detach the iron ink side leakage prevention plate 13 to the surface of the squeegee 7 with one touch.

The slider 17 for the ink return doctor 6 shown in FIG. 5 is attached to the upper and lower substrates 8e at an angle of about 45 degrees with respect to the horizontal, and the weight of the ink return doctor 6 and the holder 12 for mounting the ink return doctor 6 are fixed. The weight is what works smoothly.

The squeegee 7 mounting holder 18 shown in FIG. 5 is attached in parallel to the vertically mounted screen plate 5 and horizontally spanning each of the squeegee 7 sliders 19. A holder for detachable attachment.

The slider 19 for the squeegee 7 shown in FIG. 5 is attached to the upper and lower substrates 8e to hang the squeegee mounting holder 18.

The squeegee 7 printing pressure air cylinder 20 shown in FIG. 5 applies printing pressure to the squeegee when the ink is slid and transferred from the bottom to the top through the screen plate 5.

The push spring 21 shown in FIG. 5 has both the tip of the squeegee 7 and the tip of the ink side leakage prevention plate 13 both at the same time with the force of the air cylinder against the vertical surface of the screen plate 5, and the power failure. At the time of air or air-leakage, it is always in contact with the force of the push spring 21.

The width adjusting handle 22 shown in FIG. 2 is for adjusting the width size of the box 15.

The lifting mechanism 23 shown in FIG. 2 is for adjusting when changing the height size of the box 15 or changing the printing position in the height direction.

The one-touch metal fitting 24 shown in FIG. 5 is used to easily attach and detach the squeegee 7 to the holder 18 for mounting the squeegee 7 and the ink returning doctor 6 to the holder 12 for installing the ink returning doctor 6. Is.

It is detail drawing of the squeegee of a screen vertical type printing press. It is a side view of a screen vertical printer. It is a front view of a screen vertical printer. It is a top view of a screen vertical printer. It is sectional drawing of the spatula part of a screen vertical printing machine. Japanese Unexamined Patent Publication No. 7-171945 (Excerpt from Ink Supply Mechanism)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen vertical printing machine 2 Base 3 Moving body 4 Horizontal table 5 Screen plate 6 Ink returning doctor
7 Squeegee 8 Elevator 8a Vertical drive motor
8b Vertical drive counter shaft 8c Vertical drive chain wheel 8d Vertical chain 8e Vertical substrate 9 Air cylinder for moving body 3 drive
10 Air cylinder for installing screen plate 5
11 Base 12 Ink-Return Doctor-6 Holder
13 Ink Side Leakage Prevention Plate 14 Spatula Part 15 Box 16 Permanent Magnet 17 Slider for Ink Return Doctor 6
18 Holder for mounting squeegee 7
19 Slider for squeegee 7
20 Air cylinder for squeegee 7 printing pressure
21 Pressing Spring 22 Width Adjustment Handle 23 Elevating Mechanism 24 One-touch Bracket 25 Compressed Air Connection Port 26 Ink Tank 27 Ink Supply Pipe

Claims (3)

The horizontal table 4 that supports the printing surface of the box 15 such as a fish box so that it is vertical, and the outer surface of the box 15 supported by the horizontal table 4 are brought into contact with and separated from each other. A printing screen plate 5 is mounted vertically on the front surface of the moving body 3, an ink returning doctor 6 for slidingly applying ink to the screen plate 5, and a squeegee 7 for pressing and transferring the applied ink. In the printing machine that performs screen printing on the outside of the box, an ink lateral leakage prevention plate 13 is provided at both ends of the squeegee 7, and the tip of the squeegee 7 and the lateral ink leakage Both of the leading ends of the prevention plate 13 are always in contact with the vertical surface of the screen plate 5, and when the ink is pressed and transferred, the ink returning doctor 6 and the squeegee 7 slide upward from the bottom. A screen type vertical printing machine characterized by the above. As a method of providing the ink lateral leakage prevention plate 13 on the squeegee 7, the permanent magnets 16 are embedded in both side surfaces of the squeegee 7, and the lateral ink leakage prevention plate 13 is made of iron. The screen vertical printing machine according to claim 1. An air cylinder 20 is provided at the rear of the squeegee 7, a push spring 21 is provided in the lot of the air cylinder 20, and the tip of the squeegee 7 and the tip of the ink side leakage preventing plate 13 are In both cases, the vertical surface of the screen plate 5 is always in contact with the force of the air cylinder, and is always in contact with the force of the push spring 21 in the event of a power failure or air leakage. Item 3. The screen vertical printing machine according to Item 1 or 2.

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