JPH09314797A - Upright printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save on an area for the installation of a printing machine, if a printing material is of a large area size and also easily print both faces of the printing material simultaneously. SOLUTION: This upright printing machine is intended for performing the screen process printing of a plate-like printing material 2 and consists of a supporting member 20 for supporting the printing material 2 in such a manner that its printing face is vertical, a screen fixing member 33 for fixing a screen plate 3 vertically by leaving a small allowable interval spaced in parallel with the printing face of the supported printing material 2, the screen plate 3 fixed by the fixing member 33, a mechanism for applying ink to the screen plate 3 and a squeegee 90 for transferring the applied ink under pressure. Further, a bucket 70 filled with the ink is adapted as a mechanism for applying the ink. In this case, the ink is applied by closely fitting a bucket end 70a to the lower part of an ink application face and tilting and further, causing the bucket end 70a to ascend. The bucket 70 can be used as a excess ink receiver.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing machine for screen-printing on a flat printing material, and more particularly to a vertical printing machine capable of simultaneously performing double-sided printing.

[0002]

2. Description of the Related Art Conventionally, when screen-printing on a plate-shaped printing material, a printing machine that supports the printing material with a printing surface facing upward on a horizontal table and installs a screen plate on the upper surface of the printing surface is known. Was used.

However, in such a structure, when the printing material has a large area, the printing machine also has to be large in size, which may cause a problem of the installation area of the printing machine.

On the other hand, when printing on both sides of a plate-shaped printing material, one side is printed first, then the ink is dried, and then the other side is printed again, so the workability of the printing work is poor. There was a problem.

[0005]

According to the present invention, even when the printing material has a large area, the installation area of the printing machine can be kept small, and both sides of the printing material can be easily printed at the same time. It is to provide a vertical printing machine capable.

[0006]

Means for Solving the Problems In the present invention, a means for solving the above problems is to support a printing material in a printing machine for screen printing on a flat printing material so that the printing surface is vertical. A support member, a screen plate fixing member for vertically fixing the screen plate in parallel with the printing surface of the supported printing material with a small gap, a screen plate fixed by the fixing member, and the screen plate It is characterized by having a mechanism for applying ink and a squeegee for pressing and transferring the applied ink.

In double-sided printing, a screen plate is installed on each of the printing surfaces of a vertically supported printing material, and both surfaces are pressed and transferred at the same time, so that the burden of supporting the printing material at the time of pressing transfer is reduced. Is characterized by.

In the above printing machine, a bucket is provided as a mechanism for applying ink, the upper end of the bucket on the printing surface side is formed into an acute angle, and the upper end of the bucket filled with ink is applied on the screen plate. A drive mechanism for bringing the bucket into close contact with the lower surface, a bucket tilt slider guide having a circular arc shape centered on the upper end of the bucket printing surface for tilting the bucket toward the screen plate, and a bucket tilt slider sliding along the guide. It has a bucket tilt cylinder for driving the slider and a mechanism for lifting the bucket to the upper part of the ink application surface while dropping the ink in a tilted state of the bucket. The feature is that it is also used as a receiver.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is an embodiment of the present invention, in which two screen plates are mounted on a rectangular parallelepiped control unit 10 having a power source section, a control section, an operation switch and a main power section. This is a vertical double-sided printing machine that prints by setting 3 and the printing material 2 so that the printing surface is vertical.

An operating mechanism is provided on the front surface of the control unit 10, and a power cord 11, a pedal switch 12, a timer 13 and the like are provided.

Side columns 15 are installed at four corners of the upper surface of the control unit 10. The four side columns 15 have the same length, and a top plate 16 is horizontally provided at the upper end. Side pillar 1
Although auxiliary plates 17 and 18 are provided for the front and rear side pillars in the central portion of 5, the left auxiliary plate 17 connects the front and rear side pillars, while the right auxiliary plate 18 is It is two separate plates to provide a space in the middle of the side pillar. The space provided between the auxiliary plates 18 on the right side is for taking in and out the printing material 2.

In this embodiment, the slide bar guide 22 is provided so that the right end thereof projects from the central portion of the upper surface of the control unit 10. The slide bar guide 22 has the guide 22
A slide bar 21 that slides on is mounted slidably. Two printing material support plates 2 for holding the printing material 2 on the slide bar 21 so that the printing surface is vertical.
0 is provided. Also, the top plate 15 to the auxiliary plates 17 and 1
Up to 8, four guide rods 30 are provided in parallel with the side pillars 15 in the front, rear, left and right directions, and the guide rods 30 are horizontally movable along the guide rods 30 for fixing the printing material. 23
And the screen plate upper fixing member 31 described later.
Is provided with a grip portion 32. For convenience of reading the set heights of the printing material fixing member 23 and the screen plate upper fixing member 31, the top plate 15 to the auxiliary plate 17,
Two right and left scale plates 19 are provided up to 18, and the grip portions 24 and 32 are fixed so that the mounting height can be selected.

The present embodiment is a double-sided printing machine, and is capable of installing two screen plates. A screen plate lower fixing member 33 is provided above the slide bar guide 22. On the other hand, since the guide bar 30 is provided between the top plate 15 and the auxiliary plates 17 and 18 as described above, the screen plate upper fixing member 31 that can move horizontally along the guide bar 30 is provided. Two screen plate upper fixing members 31 are provided corresponding to the front and rear screen plates 3.

FIG. 1 shows a state in which two screen plates 3 are installed. The screen plate 3 is fixed by fitting the lower part to the screen plate lower fixing member 33 and removably screwing the upper part to the screen plate upper fixing member 31.

An upper drive belt wheel 40 and a lower drive belt wheel 41 are provided on the inner sides of the upper portions of the four side columns 15 and on the lower inner sides thereof, respectively.
A vertical driving belt 42 is hung on the. The lower drive belt wheel 41 is connected to each other by a connecting shaft 43, and the two connecting shafts 43 are provided with a power transmitting belt wheel 44. Further, a power transmission belt 45 is hung on the power transmission belt wheel 44. The power transmission belt 45 is composed of two power transmission belt wheels 44 and a main electric motor 48 in the control unit 10.
Are interlocked with each other, and are hung on an output transmission belt wheel 47 in the control unit 10 via an auxiliary vehicle 46.

FIG. 2 shows a front view of this embodiment. 3 is a sectional view taken along line AA of FIG. 2, FIG. 4 is a sectional view taken along line BB of FIG.
FIG. 5 is a left side view of FIG.

A second guide rod 49 is provided between the upper and lower driving belt wheels 40 and 41 of the four side pillars 15, respectively.
The second guide rod 49 is provided with a vertical drive substrate 51 that moves up and down along the guide rod 49 via a vertical drive bearing 50. The four vertical drive substrates 51 have the same height, and one side surface thereof is connected to the vertical drive belt 42 described above.

A plane U-shaped bucket frame 60 is provided on each of the vertical drive substrates 51 so as to be aligned at the same height.
Inside the facing left and right bucket frames 60, a bucket base 62, which is movable in the horizontal direction, is attached to a bucket base support shaft 61 provided in the bucket frame 60. The bucket frame 60 and the bucket base 62 are the front and rear fine movement cylinders 6 of the bucket.
The bucket base 62 moves in the front-rear direction inside the bucket frame 60 by the operation of the cylinder 63. Further, squeegee vertical drive cylinder mounting bases 64 are provided on the vertical drive base plate 51 so as to be aligned at the same height, and squeegee vertical drive cylinders 65 are mounted on the mounting bases 64, respectively, and the squeegee is horizontally mounted via the cylinders 65. The platform 67 is connected. A squeegee vertical drive cylinder guide 66 is provided on the squeegee vertical drive cylinder mounting base 64 and the squeegee base 67 for smooth vertical drive of the squeegee base 67.

On the bucket table 62, a pair of front and rear bucket driving cylinders 75 are provided in parallel with each other, with a pair of left and right cylinders being outside. A bucket support shaft fixing plate 74 parallel to the bucket base 62 is fixed to the cylinder end of the cylinder 75, and the support shaft fixing plate 74 is also provided.
Two bucket support shafts 73 having fixed ends are provided. Further, the bucket support shaft 73 penetrates the bucket base 62, and a bucket support plate 77 extending vertically downward is fixed to the other end. The through hole of the bucket base 62 serves as a slide guide for the bucket support shaft 73.

A bucket tilt cylinder support plate 78 is provided at the lower end of the bucket support plate 77 so as to face inwardly and is orthogonal to the support plate 77. A bucket tilt cylinder 79 is provided at the center of the support plate 78. Has been. The bucket mounting plate 7 is attached to the cylinder end of the bucket tilt cylinder 79.
1 is provided, and a bucket mounting plate 72 is projectingly provided on the mounting plate 71.

A bucket 70 for applying ink is provided on the bucket mounting plate 71 adjacent to the bucket mounting bar 72.
Is placed. A bucket pressure adjusting screw 76 fixed to the bucket 70 by screwing with a bucket attaching plate 72 is provided at the attaching portion of the bucket.
By rotating 6 the bucket mounting plate 72 and the bucket 7
The bucket pressure is adjusted by adjusting the distance of 0.
The shape of the bucket 70 is box-shaped, and the side wall on the printing surface side is inclined, and the upper end portion 70a on the printing surface side of the bucket has an acute angle.
The tilt on the printing surface side of the bucket is an angle that is substantially horizontal when the bucket is tilted.

On the side surface of the bucket support plate 77, an arcuate bucket tilt slider guide 81 centered on the bucket printing surface side upper end portion 70a is provided, and the guide 81 slides along the guide 81. A tilt slider 80 is provided. Both ends of the bucket mounting plate 72 are mounted on the slider 80. In this embodiment, two rollers are respectively provided on the bucket tilt slider 80 at positions where the rollers 82 contact the arc-shaped inner peripheral edge and the arc-shaped outer peripheral edge of the bucket tilt slider guide 81.
The bucket tilt slider 80 slides along the bucket tilt slider guide 81 due to the rolling of the rollers 82.

A pair of right and left squeegee drive cylinders 96 are provided in parallel to each other on the squeegee bases 66, with the cylinder ends facing outward, and the cylinder ends of the cylinders 96 are parallel to the squeegee base 66 and a squeegee support shaft fixing plate. 95
Is fixed, and two squeegee support shafts 94 whose ends are fixed to the support shaft fixing plate 95 are provided. The squeegee support shaft 94 penetrates the squeegee base 66, and a squeegee mounting bar 91 is provided at the other end. The through hole of the squeegee base 66 serves as a slider guide for the squeegee support shaft 94.

The squeegee mounting bar 91 has a structure for clamping and fixing the squeegee 90 for pressing and transferring the ink, and the squeegee mounting screw 92 clamps and fixes the squeegee. The squeegee mounting bar 91 is provided with a squeegee angle adjusting screw 93 for adjusting the angle of the squeegee 90. Although the squeegee 90 has a rectangular parallelepiped shape made of a rubber material in the present embodiment, the material and shape are not limited to this.

Although each cylinder is connected to the control unit 10 by an air supply tube, it is not shown in FIGS. 1 to 5.

To subsequently use this embodiment, first, the screen plate 3 is attached to the screen plate upper and lower fixing members 31,
It is fixed to the printing machine 1 by 33 and brought into the state shown in FIG. When fitting the screen plate 3, the bucket front-rear drive cylinder 75 positions the bucket 70 outside, and after fixing the screen plate 3, the bucket front-rear drive cylinder 75 positions the bucket 70 inside. The bucket front-back drive cylinder 75 is driven only when the screen plate 3 is attached or detached.

Next, the printing material 2 is vertically sandwiched and held between the two printing material supporting plates 20, and a slide bar 21 that slides integrally with the printing material supporting plate 20 is provided along the slide bar guide 22. The printing material fixing member 23 is slid to lower the printing material fixing member 23 at a position where the ink application portion of the screen plate 3 and the printing surface coincide with each other, and is set to a position where the printing material 2 can be held. In the case of single-sided printing, it is necessary to firmly fix the printing material 2, but in the case of double-sided printing, the force of the pressure transfer is applied from both sides, so the fixing is sufficient to the extent that the sliding of the slide bar 21 is not obstructed. . If the slide bar 21 can slide, the printing material 2 can be quickly replaced. If the size of the printing material 2 is known in advance, the scale plate 19 can be used.

After setting the printing material 2, the bucket 7
Fill 0 with ink and step on the pedal switch 12 to turn it on. The printing press 1 operates according to a control algorithm programmed in the control unit 10.

First, the bucket front / rear fine movement cylinder 61 operates to bring the bucket 70 into close contact with the screen. The degree of the contact pressure can be adjusted by the bucket pressure adjusting screw 76.
Subsequently, the squeegee vertical drive cylinder 64 operates to tilt the bucket and the squeegee 90 avoids upward, and at the same time, the bucket tilt cylinder 79 operates to push the bucket mounting plate 71 upward, and with this, the bucket mounting. The bucket tilt slider 80 fixed to the side surface of the plate 71 causes the bucket tilt slide guide 8 to move by the rolling of the rollers 82.
Slide along 1 and as a result bucket mounting plate 7
1 and the bucket 70 are tilted by rotating around the bucket print surface side upper end portion 70a. Due to this inclination, the ink is dripped from the bucket 70 onto the screen.

In this embodiment, the side wall on the printing surface side of the bucket is
Since the bucket is tilted so as to be substantially horizontal when tilted, ink that does not drip does not remain in the bucket 70. Further, since the inclination is performed around the bucket printing surface side upper end portion 70a, the bucket 70 can be kept in close contact with the screen, and therefore, the ink is prevented from being unnecessarily overflowed.

Depending on the viscosity of the ink, it may take some time before the ink drips from the bucket 70. In this embodiment, however, by measuring the time taken and setting it with the timer 13, an automatic waiting time is provided. It is possible to drive. Further, the bucket 70 can be provided with a mechanism for positively pushing out the ink.

When ink begins to drip due to the inclination of the bucket 70, the main electric motor 48 in the control unit 10 is operated to output the output transmission belt wheel 47, the auxiliary vehicle 46, the power transmission belt 45, the power transmission belt wheel 44, and the upper and lower wheels. Drive belt wheel connecting shaft 43, upper and lower drive belt wheel 40,
41, a vertical drive substrate 51 via a vertical drive belt 42
Rises. Since the four vertical drive substrates 51 rise synchronously, the bucket base 62 and the squeegee base 66 connected to the vertical drive substrates 51 rise together without changing the positional relationship. Accordingly, the bucket printing surface side upper end portion 70
Since “a” rises in close contact with the screen, the dripping ink is applied to the screen by being rubbed against the upper end 70a of the bucket printing surface side. Vertical drive substrate 51
The rising speed of the ink is adjusted according to the viscosity of the ink so that the ink can be applied well.

When the bucket 70 rises to the ink application end point, the main motor 48 stops and the rise stops, and the bucket tilt cylinder 79 drives in the reverse direction to move the bucket 7.
0 returns to horizontal. Here, since the ink drips even after the inclination of the bucket 70 is returned to the original state after the rising is stopped, the ink is thickly deposited at the ink application end point.
Generally, since the ink application end point is set above the uppermost part of the printing surface, there is a problem that a thick ink is not used for printing and is wasted. Therefore, this embodiment
By returning the bucket 70 to the horizontal position and then operating the main motor 48 again to raise the bucket 70 by a minute distance,
Thick ink is removed and collected.

After the excess ink is recovered by raising the bucket 70 which has been returned to the horizontal position, the squeegee vertical drive cylinder 64 and the squeegee front and rear drive cylinder 96 are operated, and the squeegee 90 appears on the screen slightly above the ink application surface. Crimp. On the other hand, the bucket 70 moves away from the minute distance screen by the bucket front and rear fine movement cylinders 61 operating in reverse.

While maintaining the positional relationship between the squeegee 90 and the bucket 70, the main motor 48 rotates in the reverse direction and the vertical drive board 51 descends. As the squeegee 90 descends, the ink applied to the screen is pressed and transferred onto the printing material 2. The pressing strength of the squeegee 90 can be adjusted by the squeegee angle adjusting screw 93 according to the hardness of the printing material 2 and the like. The ink that is not transferred and is peeled off by the squeegee 90 and drips falls into the bucket 70 and is not wasted.

When the squeegee 90 descends to a position slightly lower than the lower part of the ink application surface, the main motor 48 stops and the descending stops, the squeegee front-rear drive cylinder 96 operates, the squeegee 90 moves to the outside, and the bucket 70 again. The traction motor is operated to move up, the bucket is returned to its original position, and one stroke of the control algorithm is completed.

For continuous printing, the above algorithm may be repeated, and the input of the pedal switch 12 may be required for each stroke, or it may be completely automated. After printing is completed, replace the printing material 2 with the squeegee 9
It suffices that the process is performed by the time when the pressing transfer by 0 is started. In this embodiment, the printing material 2 is manually put in and taken out from the right side, but for complete automation, the left auxiliary plate 17 is also separated and a space is provided in the central portion so that the printing material 2 is, for example, the right side. It is good to insert it from the left and put it to the left.

[0038]

According to the present invention, since the printing material is supported so that the printing surface is vertical, the installation area of the printing press can be kept small even when the printing material has a large area. There is.

Further, the present invention is a double-sided printing machine, and by carrying out pressure transfer on both sides at the same time, it is possible to reduce the supporting load of the printing material and to easily print on both sides simultaneously.

Further, according to the present invention, a bucket is provided as a mechanism for applying ink, the upper end of the bucket on the printing surface side is formed into an acute angle, and the upper end of the ink-filled bucket on the printing surface is located below the ink applying section of the screen. A driving mechanism for closely contacting, a bucket tilt slider guide having an arc shape centering on the upper end of the bucket printing surface side for tilting the bucket toward the screen, a bucket tilt slider sliding along the guide, and the slider driving And a mechanism for raising the bucket to the upper part of the ink application part while dripping the ink in a tilted state of the bucket, while using the bucket as a surplus ink receiver at the time of pressure transfer by a squeegee. Therefore, there is a problem regarding the handling of ink that is unique to vertical printers. Is an innovative vertical printing press that overcomes all.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire embodiment of the present invention.

FIG. 2 is a front view of the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG.

5 is a left side view of FIG.

FIG. 6 is a side view showing a state where the bucket is tilted.

[Explanation of symbols]

 1 Vertical double-sided printing machine 2 Printing material 3 Screen board 10 Control unit 11 Power cord 12 Pedal switch 13 Timer 15 Side pillar 16 Top plate 17 Auxiliary plate 18 Auxiliary plate 19 Scale plate 20 Printing material support plate 21 Slide bar 22 Slide bar Guide 23 Printing material fixing member 24 Gripping portion 30 Guide rod 31 Screen plate upper fixing member 32 Gripping portion 33 Screen plate lower fixing member 40 Upper driving belt wheel 41 Lower driving belt wheel 42 Vertical driving belt 43 Connecting shaft 44 Power Transmission belt wheel 45 Power transmission belt 46 Auxiliary vehicle 47 Output transmission belt wheel 48 Main electric motor 49 Second guide rod 50 Vertical drive bearing 51 Vertical drive board 60 Bucket frame 61 Bucket stand support shaft 62 Bucket stand 63 Fine movement before and after bucket Cylinder 4 Squeegee Vertical Drive Cylinder Mount 65 Squeegee Vertical Drive Cylinder 66 Squeegee Vertical Drive Cylinder Guide 67 Squeegee Base 70 Bucket 70a Bucket Printing Surface Upper End 71 Bucket Mount Plate 72 Bucket Mount Plate 73 Bucket Support Shaft 74 Bucket Support Shaft Fixed Plate 75 Bucket longitudinal drive cylinder 76 Bucket pressure adjusting screw 77 Bucket support plate 78 Bucket tilt cylinder support plate 79 Bucket tilt cylinder 80 Bucket tilt slider 81 Bucket tilt slider guide 82 Roll 90 Squeegee 91 Squeegee mounting bar 92 Squeegee mounting screw 93 Squeegee angle adjusting screw 94 Squeegee support shaft 95 Squeegee support shaft fixing plate 96 Squeegee front-rear drive cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoyuki Yokoi 1-35-6 Nishinishie, Edogawa-ku, Tokyo (72) Inventor Yuji Suzuki 1-25-2, Shinzonan, Toda City, Saitama Prefecture

Claims (9)

[Claims] 1. A support member (20) for supporting a printing material (2) such that a printing surface is vertical in a printing machine (1) for screen-printing a flat printing material, and the supporting member (20). Screen plate fixing members (31, 33) for vertically fixing the screen plate (3) at a small interval in parallel with the printing surface of the printing material (2) supported by 20), and the fixing member (31) , 33), a screen plate (3) fixed by the screen plate, a mechanism for applying ink to the screen plate (3), and a squeegee (90) for pressing and transferring the applied ink.
A vertical printing machine, comprising: 2. In order to perform double-sided printing on a flat printing material, screen plates (3) are installed on both printing surfaces of the vertically supported printing material (2), and both printing surfaces are pressed simultaneously. The vertical printing machine according to claim 1, wherein transfer is performed. 3. The vertical printer according to claim 1, wherein a bucket (70) is provided as a mechanism for applying ink. 4. An upper end portion (7) of the bucket (70) on the printing surface side.
The vertical printer according to claim 3, wherein 0 a) has an acute angle due to the inclination of the side wall on the printing surface side. 5. A drive mechanism (63) for bringing the upper end (70a) of the ink-filled bucket (70) on the printing surface side into contact with the lower part of the ink application surface of the screen (3), and the bucket (70). 5. A mechanism for inclining to the screen side, and a mechanism for raising the bucket (70) up to the upper part of the ink application surface while dripping the ink in a state in which the bucket (70) is inclined. Vertical printer described in. 6. An arcuate bucket tilt slider guide (81) having a bucket printing surface side upper end portion (70a) as a center, as a mechanism for tilting the bucket (70) toward the screen side.
The vertical printer according to claim 5, further comprising: a bucket tilt slider (80) that slides along the guide, and a bucket tilt cylinder (79) for driving the slider. 7. A bucket (70) after completion of ink application.
7. The vertical printer according to claim 5 or 6, wherein the inclination is returned to the original value and the bucket (70) is controlled so as to be lifted by a minute distance from the ink application end point. 8. A mechanism (64, 65) for controlling the vertical movement of the squeegee (90) independently of the vertical movement of the bucket (70), according to any one of claims 3 to 7. Vertical printing machine. 9. A bucket (70) is attached to a squeegee (90).
9. The vertical printer according to claim 3, wherein the vertical printer is controlled so as to be used as a surplus ink receiver at the time of pressure transfer by.