JPH0259346A - Screen printing - Google Patents

Abstract

PURPOSE:To shorten a processing time and thereby increase the operating simplicity of a processing mechanism by allowing a moving suction member which holds a material to be printed, to move in parallel by the action of a material push-up member, away from the printed material, after printing. CONSTITUTION:A moving suction member 4 which reaches the specified positions of a position matching table 2 and a printing table 1 retains a positioned material to be printed M1 with its first suction section A. At the same time, the moving suction member 4 ascends so that its second suction member B retains a printed material M2 on a material push-up member 7. When the moving suction member 4 retains the materials to be printed M1, M2 on the position matching table 2 and the material push-up member 7 respectively, the position matching table 2 and the material push-up member 7 descends to specified positions. The moving suction member 4 moves horizontally to the printing table 1 so that it delivers the materials to be printed M1, M2 to the printing table 1 and a transport belt conveyor 3. The material to be printed M1 is deposited securely on the printing table 1 by a negative pressure suction force from a suction hole to wait for printing.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention is characterized in that a position alignment table and a carry-out process are arranged in series before and after a printing table, and a movable suction device with a length that covers the vertical alignment table and the printing table is provided. The present invention relates to an improvement in a printing method in which a printed material that has been aligned with a member is printed on a printing table.

"Prior Art and Problems to be Solved by the Present Invention" Conventionally, a printing medium that has been aligned in a position alignment section is transported to a printing section by a conveying means, and the carrying means holds the printing medium and performs printing processing. Printing methods for this are widely known.

However, the relationship between the printing table and the material conveyance means used in this printing method is such that the conveyance means is usually formed from a flat, relatively wide plate-like body, and the plate-like body is used as a part of the printing table. There are many things to use.

The transport means thus form part of the printing table,
In the case of a device that holds the printing material during the printing process, after the printing process is completed, the conveyance means must separate from the printed material to ensure its movement, and the time required for - printing cycles This has become an important issue in relation to screen printing and structural wholesalers. In other words,
After printing is completed, the conveyance means needs to separate from the printed material and return to the alignment section to hold the aligned printing material again. After the printing process in the print table is finished,
A generally adopted method is for the conveying means to move below the printing table, but in this method, when the position alignment section and the printing table are taken as a reference, the conveying means protrudes from, is parallel to, or parallel to the upper surfaces of the alignment section and the printing table. This method performs three-step immersion movement, and there is a problem in terms of the time required for - printing cycles, and furthermore, the necessity of an actuation mechanism for three-step movement goes against the idea of simplifying the structure. There is a risk.

In addition, recently there has been a method in which the conveying means is fixed and the printing table is moved up and down in the vertical direction as a means of separating the printed material, but in this method, the conveying means is moved immediately after the printing process is completed. Although it is possible to move the printing table in parallel, it is absolutely necessary to move the printing table up and down in parallel, and this also involves the problem of complicating the operating mechanism of the printing table due to the need for an appropriate distance from the screen plate. I'm here.

"Means for Solving Problems" The present invention has been made in view of the state of the prior art, and the distance between the movable suction member as a conveying means and the printed printing material is arranged below the printing table. The movable suction member remains in the state it was in during printing, and as soon as the printed material is separated from the printed material while keeping its top surface parallel to the top surface of the printing table, it moves toward the alignment table. The printing material, which can be translated in parallel to
At the same time, the second suction section sucks the printed material on the material push-up member, and again places the aligned printing material in a predetermined position above the printing table. To solve this problem, the printing materials are moved parallel to each other so that they are positioned above the carrying-out process, and the printing materials are held by the first suction section of the movable suction member during the printing process. It is used as a means.

``Function'' According to the present invention, the lifting part (O) may be of any type as long as it can protrude from the top surface of the printing table. After finishing, the screen plate can be immediately moved in parallel, and there is no need for the movable suction member to move in three steps, and there is no need to move the printing table. This eliminates the need to adjust the spacing between the two, making it possible to realize a screen printing method that is simple and allows for quick processing.

"Example" Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic top view illustrating an apparatus used in carrying out the present invention, in which a position alignment table 2 is arranged and installed in the preceding process with a printing table l as the center, and a belt is disposed in the subsequent process as a conveyance process. Conveyors 3 are arranged in series.

The movable suction member 4 is connected to the position alignment table 2 and the printing table 1.
The first suction portion B has a length that covers the first suction portion B, and the second suction portion B suctions and holds the printing medium M by the negative pressure suction force from the suction hole 4b. Furthermore, the movable suction member 4 spans three processes: the position alignment table 2 and the belt conveyor 3 for outputting the printing table 11112, and one guide rail 5 installed approximately in the center of these processes 1, 2.3. As will be described in detail later, during printing, the upper surface 4a of the printing table 1 is maintained in a horizontal state, at least not with the upper surface 1a of the printing table 1, and after the printing process is finished, it remains as it is. In other words, the position alignment table 2 is moved in parallel with the top surface 1a of the printing table and its top surface 4a kept in a horizontal state. Reference numeral 6 denotes a roller member fixed to the movable suction member 4, which holds the guide rail 5 and moves on the guide rail 5 by receiving power from a separately installed drive source (not shown).

Further, the movable suction member 4 moves up and down in the vertical direction with respect to the printing table 1, position alignment table 2, and delivery belt conveyor 3, but this operating mechanism may be determined as appropriate, for example, using power from a drive source. Therefore, the guide rail 5 itself may be configured to be movable up and down.

In the figure, reference numeral 7 denotes a material pushing-up member provided below the printing table 1, which is capable of moving in and out of the table top surface 1a in the vertical direction. Reference numeral 8 denotes an alignment member disposed on the position alignment table 2, which is provided on one side of the printing medium M in the forward, backward, and perpendicular directions in the traveling direction of the printing medium. It is a moving structure.

Reference numeral 9 denotes a guide plate that guides the loading of the printing medium M onto the alignment table 2, and 10 indicates a camera device for checking whether the alignment state is appropriate. Furthermore, reference numeral 11 denotes a backing plate for a squeegee member (not shown) provided on the printing table 1, which can be adjusted according to the surface area and thickness of the printing medium M. Reference numeral 12 designates a screen plate having a predetermined pattern formed therein, 13 represents a negative pressure suction hole formed in the printing table 1, and 14 represents a negative pressure suction hole formed in the position alignment table 2.

Next, a series of printing processes from position alignment to printing processing and delivery according to the present invention will be explained in Figs. 2 (1) to (7).
).

When the printing material M as a material is carried above the position alignment table 2 by the conveyance belt v, the position alignment table 2 moves upward, and the printing medium M is transferred from the conveyance belt V to the position alignment table 2. The delivery will take place. At this time, the movable suction member 4, which is the material conveying means, is already in its first suction section A.
The printing material M2, which has been aligned, is placed on the printing table 10 at a predetermined position, and the second suction section B transfers the printed material M2, which has undergone printing, to the conveyor belt 3 for carrying out the printing process, and transfers the printing material M2 to the printing tape 1. It is located below the conveyor belt 3 for carrying out (see FIG. 2 (1)).

The printing material M on the position alignment table 2 is subjected to printing processing on the printing material gate whose alignment section is held by the first suction section by the action of the roller 8 and the camera 10 (Fig. 2 (2)). reference).

When the alignment process is completely completed on the position alignment table 2, the printing process on the printing medium M1 on the printing table 1 is also finished, and the screen plate 12 is raised, and the material located below the printing table 1 is removed. The push-up member 7 separates the printed material M2 from the first suction section A of the movable suction member 4. When the movable suction member 4 detects the separation of the printed material M2, it immediately moves in parallel toward the alignment table 2 (see (3) and (4) in FIG. 2).

The movable suction member 4 that has reached the predetermined positions of the position alignment table 2 and the printing table l moves the aligned printing medium M1 to the first position.
At the same time, the second suction section B moves upward to hold the printed material M2 on the material pushing-up member 7, and the moving suction section T4
and the material uplifting part on each printing medium Mt+
When M2 is held, the position alignment table 2 and material pushing-up member 7 descend to a predetermined position (see (5) and (6) in Figure 2).
)reference).

Aligned printing substrate gate and printed printing substrate M2
The movable suction member 4 holding the respective printing materials Mt
+ M2 printing table 1 and unloading belt conveyor 3
When the printing table 1 moves in parallel to reach a predetermined position in order to be delivered to the print table 1, the printed material M2, which is already printed and is held by the second suction section B, is lowered and carried out by the carrying-out belt conveyor 3. Further, the aligned printing material held by the first suction unit A is fixedly placed on the printing table l by the negative pressure suction force from the suction hole 13, and waits for printing processing. (See Figure 2 (7) and (1)).

The means for fixing the printing medium M between the position alignment table 2 and the printing table 1 here is a method that utilizes the suction force from the negative pressure suction holes 13, 14, but it is of course possible to use other appropriate methods. It is.

Note that the position alignment table 2 of the movable suction member 4 and the printing medium M9M on the printing table 1.

As mentioned above, the holding is also performed using negative pressure suction means.

The interlocking adjustment of the operation of the position alignment table 2, the screen plate 12, or the material thrusting member 7 and the movement of the movable suction member 4 is performed using a sensor that detects the start and end of the operation in each section and a sensor that instructs the operation. Of course, it is properly controlled by the action of a computer (none of which is shown).

"Effects of the Invention" The present invention is configured as described above, and the movable suction member that holds the printing material while maintaining the same surface as the top surface of the printing table during the printing process on the printing table is After finishing, the printed material is separated from the printed material by the action of the material push-up member, so it can be moved in parallel immediately at the same time as it is separated. Compared to the conventional printing method, which required movement in three stages: protrusion, parallelism, and retraction, this has made it possible to realize a printing method that is more advantageous in terms of shorter processing time and simpler processing machine grooves.

[Brief explanation of the drawing]

FIG. 1 is a schematic top view illustrating a printing apparatus related to the present invention, and FIGS. 2 (1) to 2 (7) are schematic explanatory diagrams illustrating the printing process according to the present invention. l... Printing table , 1a...Top surface, 2...Position alignment table, 2a...Top surface, 3...Export belt conveyor 3a...Top surface, 4...Moving suction member, 4a...
Upper surface, 4b... Negative pressure suction hole, 5... Guide rail, 7...) Material push-up member, 8... Position adjustment member, M... Printing material, h...
Aligned printing material, M2...printed printing material, A...first suction part of the movable suction member, B...second suction part of the movable suction member.

Claims (1)

[Claims] In a screen printing method in which a position adjustment process and a material unloading process are arranged in series before and after the printing process, and the printing material carried in by a material conveying means is subjected to negative pressure suction in the printing process and printed, a position alignment table and a A movable suction member having a length that covers the printing table and having a first suction part and a second suction part is disposed so as to be reciprocated in the longitudinal direction,
The printing material aligned on the position alignment table is sucked by the first suction part of the movable suction member and transferred to the upper part of the printing table, and then lowered until the upper surface of the movable suction member is parallel to the upper surface of the printing table. After the printing process is performed while the printing material is held by the movable suction member, the printed material is separated from the movable suction member by a material pushing up member disposed below the printing table, and the movable suction member is used for printing. The first suction unit is moved in parallel until it is positioned below the position alignment table in the state at the time of processing, and the aligned printing material on the position alignment table is again sucked by the first suction unit of the movable suction member. After separating the printed material from the position alignment table and sucking and separating the printed material on the material push-up member using the second suction section of the movable suction member, the first suction section adsorbs the aligned printing material. A screen printing method characterized by moving a movable suction member until it is positioned above a printing table.