JP2592738B2 - Multicolor screen printing method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for multicolor screen printing, and more particularly to a method for printing a printing material such as a T-shirt or a trainer (hereinafter, used synonymously with the material) on a transporting truck. Attach to a plurality of orbiting movable printing stands and permutate them, and pass through a printing machine and a dryer at least several times to superimpose and print and print multi-colored patterns continuously and cyclically. The present invention relates to a multicolor screen printing method and apparatus for performing a printing process.

[0002]

2. Description of the Related Art Conventionally, as a multi-color screen printing machine such as a T-shirt or a trainer, a rotary type (turntable type) is used.
And the traveling type or the long type are known.

[0003] In the rotary type, a plate holder and a printing table on which a screen gauze is stretched are arranged radially with respect to the center of the turntable and on the circumference of the turntable. It is said that it requires installation of a dryer separately. Here, the printing press body has the same number or more printing stands as the number of plate holders for the number of colors, and intermittently rotates or rotates to perform printing in the color order. In addition, it includes a drying step and sequentially operates with a waiting time until the color order.

In the traveling type, a printing machine body moves on rails, and a pattern of a screen gauze stretched on a plate holder of the printing press is continuously applied to a long material adhered on a fixed printing table. And is generally known as a machine printing device. Here, every time the printing process of a certain color is completed and the printing press body returns to the printing start position, the mold holder is removed from the printing press body and replaced with a printing plate of the next design. The incorporation of the process and the setting in which the design of the mold holder exactly matches the previously printed design must be considered. Also, for hand-printed printing,
It is also known as a cradle.

[0005] As described above, when printing multiple colors with the printing material fixed on the printing table, the first color must be printed and then naturally or forcibly dried to print the second color. No. The same applies to the case where the third color and the fourth color are printed with the colors superimposed.

[0006]

Under these circumstances, in a printing process for printing a multi-colored pattern in an overlapping manner,
Since it involves the exchange of printing plates, the exchange of materials, and the management of the drying process, which are inevitable in the work, unnecessary intermittent times (dead time) such as interruption of equipment operation or waiting for drying are eliminated. I couldn't do that. In addition, in this case, it is a problem that cannot be ignored that the drying is excessive or insufficient and the printing plate is clogged due to a trouble during running of the printing press.

In terms of assembly,
In multi-color screen printing of a T-shirt or the like that requires such steps or means, it may be necessary to pay attention to the handling of the target material in terms of material, and in the printing mechanism, the material transporting step (means), the printing step ( Means) and the drying step (means) cannot be integrated because intermittent dead time is inevitable, and as a continuous flow operation, assemble a production line including manual labor to produce multi-color printing products without interruption Was difficult.

The present invention has been made in view of such circumstances, and solves the above-mentioned problems. The present invention mounts and arranges materials on a plurality of movable printing tables orbiting around a truck, and provides a printing machine and a printing machine. Multi-color screen printing that enables the assembly of a production line to continuously and cyclically print when printing and printing multi-colored patterns by passing them through a dryer at least several times. It is an object to provide a method and an apparatus thereof.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method of assembling a material transporting step, a printing step and a drying step, in which a set number of movable printing tables are rotated on a transporting track. A multi-color printing process in which the printing process and the drying process are continuously performed at least several times, and a printing object mounted on a movable printing table with a multiple of the number of colors plus one is printed. Multi-color printing by passing the truck around and passing it through the printer body and dryer at least several times, along with updating the transport permutation including extracting completed products and replacing new printing materials,
The multi-color printing process is performed continuously and cyclically based on the color order.

Also, a multiple of the number of colors minus one.
The prints mounted on the movable printing table of several or more colors are rotated around the track in the same permutation as described above, and are passed at least several times through the printer body and the dryer. Color printing, multi-color printing is performed continuously and cyclically based on the reverse of the color order, along with the update of the transport sequence including the extraction of completed products and the replacement of new printed materials. It is.

On the other hand, in assembling the material transporting means, the printing means and the drying means, an elliptical or rectangular transporting truck comprising two sets of independently driven conveyors, and a gantry arranged on this truck together with a gantry, A printing press body having a plurality of plate holders for performing color printing, a drying machine arranged in a downstream direction following a printing process along a material conveying direction, and a mobile printing machine which is conveyed so as to be individually separated on the track. And a mechanism in which a printing medium mounted on the movable printing table orbits around a track in a permutation and passes through the printing press body and the dryer at least several times. is there.

Further, the printing press body has a rotary plate holder and is arranged at one place on the track.

Further, the printing press main body having fixed plate holders of several colors is arranged in series along the material transport line on the track.

[0014]

A continuous printing process is performed by assembling devices and processes for multicolor printing. In particular, the material transport takes place with a moving printing table that circulates on a truck,
Also, the movable printing table can be freely moved without breaking the permutation, and the permutation interval is variable. The standby function and positioning related to the input to the printing process (printing machine main body) are performed by the transport mechanism. Included. In addition, since the material transport in the drying process is performed by a conveyor that is driven independently together with the movable printing table, it is not affected by changes in printing speed and interruptions, etc., whereby the printing carried out from the printing press body is not affected. The finished material can pass through the drying step (dryer) at a constant speed, and is executed according to the drying conditions.

[0015]

Embodiment 1 An embodiment of a multicolor screen printing method according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a conceptual diagram of a printing mechanism when three-color printing is performed.
Here, a printing process in which the printing press body is rotated is illustrated for convenience, but in this process, printing may be performed sequentially based on the color order. The device configuration will be described later. In the figure, 1 is a plate holder for a first color, that is, a screen printing plate, and 2 is a plate holder for a second color (screen printing plate).
And 3 are plate holders (screen printing plates) for the third color, and A, B, C and D are movable printing plates, the permutations of which are ABC
D. It is needless to say that the screen printing plate can be replaced for setting and changing the color order.

In this embodiment, since printing is assumed to be performed in three colors, the number of movable printing tables is set to a multiple of three plus one, so that 4, 7, 10, 13,... Here, the minimum number is 4, each mobile press is A,
B, C and D. The printing by the screen printing plates 1, 2, and 3 of three colors is performed sequentially in the order of colors.

Further, the moving printing tables A to D move on the transporting truck without disturbing the permutation.
(Synonymous with the material A mounted thereon. The same applies to B, C, and D.) The first color (hereinafter, simply abbreviated as the following color) on the screen printing plate 1 by the printing press is synonymously abbreviated. Is printed, and then passes through the dryer and moves behind the movable printing platen D. The processing when the mobile printing presses A to D pass through the printing press main body and the dryer and make a round to the original position is defined as one cycle.

Hereinafter, the printing method will be described. In the first cycle, the color on the printing table A is printed, the printing tables B and C pass, and the color on the printing table D is printed. This ends the first cycle.

In the second cycle, the color on the printing table A is printed, and the printing table B passes. From the next printing table, the color on the printing table C and then the color on the printing table D are printed according to the color order. Here, the second cycle ends.

In the third cycle, the color on the printing table A is printed, and then the color on the printing table B, the color on the printing table C, and the color on the printing table D are printed. At the end of the third cycle, the three colors are printed on the printing table A and the printing table D, and the printing is completed. Therefore, after passing through the dryer, the material is removed from the printing table and a new material is mounted. The former stage of this material exchange work is referred to as extraction, and the latter stage is referred to as updating.

In the fourth cycle, the color of the printing table A is updated, the color of the printing table B is changed, the color of the printing table C is changed, and the color of the printing table D is changed. , Printing table B, printing table C updated, and printing table D become. Thereafter, by repeating this operation sequentially, printing-completed printing tables appear every third printing table in the sequence, that is, completed printing products are completed one by one every third printing table.

FIG. 2 is an explanatory diagram of the processing pattern during this time. In the drawing, the symbol △ means the above-mentioned path (idling). In this way, from the printing table C in the second cycle,
The multi-color printing process is executed continuously and cyclically based on the color order of →→.

[0023]

[Embodiment 2] Next, three-color printing is performed in the same manner as in Embodiment 1 above , but the number of movable printing tables is a multiple of three minus one, and
An example in which the number of colors is three (three) or more will be described. At this time, 5, 8, 11, 14,... Can be adopted as the actual number. Now, the minimum number is 5, and each movable printing table is A, B, C, D and E, and printing by the screen printing plates 1, 2 and 3 of three colors is sequentially executed based on the reverse of the color order. Shall be.

FIG. 3 is an explanatory view of this processing pattern. As shown in FIG. 3, the first cycle is [△△△] and the second cycle is [△] for each printing table of the permutation ABCDE, that is, the pattern for the permutation ABCDEBCDE. It is started up as 1 △△ 1 △ 21 △ 21, and may be cyclically executed from the third cycle of the printing table A based on the color order of →→, that is, the reverse of the color order in the first embodiment. In this manner, the multi-color printing process is performed continuously and cyclically based on the reverse of the color order.

[0025]

Embodiment 3 An embodiment of a multicolor screen printing apparatus according to the present invention will be described below with reference to the accompanying drawings. FIG. 4 is a schematic configuration diagram of an apparatus in which the printing press main body has a rotary plate holder and is arranged at one location on a material transport track. Here, 4 is a conveyor, 5 is a transport truck, 6
Is a plate holder (screen printing plate), 7 is a printing press main body, 8 is a dryer, 9 is a movable printing table and 10 is a substrate (material), and a rotary printing machine for 6-color printing and 13 1 illustrates a mobile printing platform. As shown, the characteristic structure
It consists of two sets of independently driven conveyors (4, 4)
(Or oval) transport truck (5)
And placed on this truck (5) with
Multiple plate holders (6) for color printing
The printing machine (7) and the printing
The dryer (8), which is placed downstream, is
Moving platen that is transported so that it can be separated on the rack (5)
(9..9) and the mobile printing press (9).
The printed substrate (10) is tracked
(5), the printer body (7) and the dryer
(8) having a mechanism for passing the color at least several times
is there.

As shown in the example, when the printing press is provided for six-color printing, for example, it is conceivable to operate the printing press with 13 printing stands set. Here, considering the number of printing tables for changing the number of colors of 2 to 6 colors, 2 × 6 + 1, 3 × 4 + 1, 4 × 3 + 1 and 6 × 2
It becomes +1 and there is no problem under the condition except for the case of five colors. In the present invention, since the movable printing table can be separated, it can be said that the number of units can be easily adjusted. It can be said that it is a number.

[0027]

Embodiment 4 As another embodiment of the apparatus of the present invention, a printing press main body having fixed plate holders of several colors is arranged in series on a truck along a material conveying line. FIG. 5 is a schematic configuration diagram of the device. Here, the reference numerals of the respective components are shown in the same manner as in the third embodiment, but in the figure, the screen printing plate (6) is in the color order starting from the lower side in the transport direction, and in some cases, the color order is reversed. What is necessary is just to arrange in series. That is, when the multiple of the number of colors is multiplied by 1 as the number of movable printing tables, the arrangement is in the order of colors, and when the multiple of the number of colors minus 1 is selected, the order of the colors is reversed.

[0028]

According to the present invention, the material is transported cyclically according to the number of colors, and the drying process is affected by the printing speed and interruption. Since continuous printing processing can be performed under optimum conditions, such as being executed without any processing, the time required for this type of printing can be significantly reduced and the processing capability can be improved.

Further, since the number of printing plates can be adjusted according to the number of colors and working conditions, the time required for the printing plate to make one cycle is minimized, and clogging due to drying of the printing plate ink is eliminated. On the other hand, within this cycle time,
Since the material is appropriately cooled during the transport process after drying, damage to the printing plate due to residual heat of drying can be avoided, and the reliability during running is high in terms of equipment.

Further, the present invention can be applied to all kinds of "flat" multi-color screen printing, and it is possible to assemble a production line including an operator.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a printing mechanism included in a printing method and an apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a processing pattern in a printing method for three-color printing according to one embodiment of the present invention.

FIG. 3 is an explanatory diagram of a processing pattern according to another embodiment.

FIG. 4 is a schematic diagram illustrating a configuration of a printing apparatus according to an embodiment of the invention.

FIG. 5 is a schematic configuration diagram of a printing apparatus according to another embodiment.

[Explanation of symbols]

 1 1st color plate holder (screen printing plate) 2 2nd color plate holder (screen printing plate) 3 3rd color plate holder (screen printing plate) 4 conveyor 5 transporting truck 6 plate holder (screen printing plate) 7 printing press Main body 8 Dryer 9 Moving press table 10 Substrate (material) A, B, C, D Moving press table E Moving press table

Claims (5)

(57) [Claims] In the assembly of a material transporting step, a printing step, and a drying step, a set number of movable printing tables are rotated on a transporting track, and the printing step and the drying step are passed at least several times for colors, A method of continuously performing multi-color printing, in which a printing object mounted on a movable printing table of a multiple of the number of colors plus one is rotated around a track in a permutation order, and the printing machine body is printed at least several times. Multi-color printing by passing through a dryer and updating the transport permutation including extraction of printed products and replacement of a new printing material, and continuous and cyclic multi-color printing based on color order A multicolor screen printing method, characterized in that: 2. A material conveying step, a printing step and a drying step.
Is set on the transport truck during the assembly of
Number of moving presses around the printing press
And continuous multi-color printing
Is a multiple of the number of colors minus one, or
First, multi-color printing is performed by rotating the printing material mounted on the movable printing table of several or more colors by rotating around the track in the permutation order and passing at least several times through the printing press body and the dryer, and printing is completed. A multicolor screen printing method characterized by continuously and cyclically performing a multicolor printing process based on the reverse of the color order while updating the transport permutation including extraction of a product and replacement of a new printing material. 3. In the assembly of the material transporting means, the printing means and the drying means, an elliptical or rectangular transporting truck consisting of two sets of independently driven conveyors, and a gantry arranged on the truck with a gantry are provided. A printing press body having a plurality of plate holders for performing color printing, a drying machine arranged in a downstream direction following a printing process along a material conveying direction, and a mobile printing machine which is conveyed so as to be individually separated on the track. A multi-color printing apparatus, comprising a table, and a mechanism in which a printing medium mounted on a movable printing table circulates around a track in a permutation and passes through the printing press body and the dryer at least several times. Screen printing device. 4. The multicolor screen printing apparatus according to claim 3, wherein the printing press main body has a rotary plate holder and is arranged at one position on the track. 5. A multi-color screen printing apparatus according to claim 3, wherein printing press bodies having fixed plate holders of several colors are arranged in series along said material transport line on said track.