JP2001071453A - Device for carrying material to be printed for screen printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support four corners of a material to be printed by both mounting sections of respective carrying beds for carrying a material to be printed, carry the material to be printed in the stabilized state without suspending the material to be printed and prevent the damage to the material to be printed, for instance, an electric wiring board or the like. SOLUTION: A device is provided with a mechanism 1 for carrying a material to be printed and working as a winding and suspending mechanism all over a matching section A, a printing section B and an ejecting section C, and a plurality of beds 26 for carrying a plurality of materials to be printed are mounted on the mechanism 1 for carrying the materials to be printed. Respective beds 26 for carrying the materials to be printed are moved on a processing line formed all over from the matching section A to the ejecting section C through the printing section B and a return line formed all over from the ejecting section C to the matching section A through the printing section B following the rotation of transmitting chains 25. Mounting bed sections 29 and 30 positioning both sides of respective materials W to be printed on both sides in the moving direction X on the processing line are provided on respective beds 26 for carrying materials to be printed, and an evasion hole 33 is formed between both placing sections 29 and 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting a printing material in a screen printing machine in which a matching portion on a printing material carry-in side, a discharge portion on a print material carry-out side, and a printing portion therebetween are arranged side by side. Things.

[0002]

2. Description of the Related Art Conventionally, in a printing material transporting apparatus of this type of screen printing machine, a wrapping transmission mechanism is disposed between an alignment section, a printing section and a discharge section, and the wrapping transmission link (a transmission chain or the like) is provided. Are mounted with a plurality of substrates to be printed. Each of the printing material transport tables moves along a processing path from the alignment unit to the discharge unit via the printing unit and a return path from the discharge unit to the alignment unit via the printing unit as the winding transmission link rotates. .

[0003]

Each of the printing material transport tables has an original function of transporting the printing material, and also has an overlapping state with an alignment table of an alignment section and a printing table of a printing section.
Since a function of securely adsorbing the printing material while avoiding collision with the alignment table or the printing table is also required, the holding structure for the printing material is limited in shape, and the printing material is generally held in a cantilever shape. . In particular, when transporting a printed material such as a thick or heavy electric wiring board, a large bending stress or the like is generated in a holding portion for the printed material, and the holding portion may be damaged. You have to be careful.

An object of the present invention is to prevent a printed material such as an electric wiring board from being damaged by transporting the printed material in a stable state without sagging.

[0005]

The present invention will be described with reference to the reference numerals in the drawings (FIGS. 1 to 4) of the embodiments described later. Claim 1
In the screen printing machine according to the present invention, the alignment section (A) to which the printing medium (W) is supplied and positioned, and the printing section for performing printing on the printing medium (W) after positioning by the printing mechanism (15). (B) and the printed material (W) after printing
And a discharge section (C) for carrying out. In this screen printing machine, the printing medium transport device is configured as follows.

A winding transmission mechanism (1) is disposed over the aligning section (A), the printing section (B), and the discharge section (C), and a plurality of printing medium transport tables are provided on the winding transmission link (25). (2
6) is attached. Each of the above-mentioned printing material transport tables (26)
Is a processing path (28a) from the aligning section (A) through the printing section (B) to the discharge section (C) as the winding transmission link (25) rotates, and a processing path from the discharge section (C) to the printing section. (B) and the return path (28b) leading to the matching section (A).
The processing path (27) is provided in the printing material transport table (26).
And mounting platforms (29, 30) for positioning both sides of the printing substrate (W) on both sides in the moving direction (X) in (1), and an avoidance hole (33) between the mounting platforms (29, 30). ing.

According to a second aspect of the present invention, there is provided the printing medium transport table (26) according to the first aspect of the present invention, wherein the processing path (28a)
Connecting portions (31, 3) connecting both sides of one mounting table (29) and both sides of the other mounting table (30) to each other on both sides in the direction (Y) orthogonal to the moving direction (X) in
2), the two mounting tables (29, 30) and the two connecting parts (31, 32) form a frame surrounding the avoiding hole (33).

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a screen printing machine according to an embodiment of the present invention.

In the screen printing machine schematically shown in FIG. 1, a matching section A on the side where a printing material is to be carried in, a discharge section C on the side where the printing material is to be delivered, and a printing section B therebetween are arranged in parallel. . The printing medium transport mechanism 1 is disposed between the alignment section A, the printing section B, and the discharge section C. The printing material W (for example, an electric wiring board) is carried into the matching unit A, and is transferred from the matching unit A to the discharging unit C via the printing unit B by the printing material transport mechanism 1, and then unloaded from the discharging unit C. Is done. The conveyance direction Q of the printing material W is referred to as the front-rear direction X, the printing material loading side is the front side, and the printing material unloading side is the rear side. A direction orthogonal to the assumed horizontal plane including the transport direction Q is defined as a left-right direction Y (see FIG. 2).

<Overview of the alignment unit A shown in FIG. 1> The alignment unit A includes an alignment table 2, a positioning device 3, and a supply device 4.

The matching table 2 is provided with a position adjusting drive unit 5.
As shown in FIG. 2, it is moved in the X direction and the Y direction by the position adjustment drive unit 5,
It rotates in the θ direction on the assumed horizontal plane including the XY directions. In the alignment table 2, avoidance grooves 6 and 7 extend in the left-right direction Y on both front and rear sides of the upper surface.
Suction bases 8 and 9 are formed between the front and rear avoiding grooves 6 and between the and the rear avoiding grooves 7, respectively. A vacuum pump (not shown) is connected to the suction bases 8 and 9. The placement surfaces 8a and 9a on the suction bases 8 and 9 are suction surfaces having a large number of suction holes (not shown), and can be positioned by suction while the printing material W is placed thereon. . The alignment table 2 can be moved up and down together with the position adjustment drive unit 5 by an elevating unit (not shown).

In the positioning device 3, the front and rear CCDs are positioned above the front and rear avoidance grooves 6 and 7 of the alignment table 2.
The camera 10 is installed, and the left and right CCD cameras 11 are installed above the rear avoidance groove 7.

The supply device 4 supplies the printing material W on the supply conveyor 12 to the alignment table 2 by the suction arm 13. <Overview of the printing unit B shown in FIG. 1> The printing unit B includes a printing table 14 and a printing mechanism 15.

In the print table 14, as shown in FIG. 2, avoidance grooves 16 and 17 are provided in the front and rear sides of the upper surface in the left-right direction Y, and the front avoidance groove 16 and the rear avoidance groove 17 are formed. At the front, suction bases 18 and 19 are formed in front of the front avoidance groove 16 and behind the rear avoidance groove 17, respectively. A vacuum pump (not shown) is connected to the suction bases 18 and 19. The mounting surfaces 18a, 19a on the suction bases 18, 19 have a number of suction holes (not shown).
, And can be positioned by suction while the printing material W is placed on the suction surface. This print table 1
4 can be moved up and down by an elevating unit (not shown).

The printing mechanism 15 includes the printing table 1
A screen frame 21 and the like are provided on a machine frame 20 which is installed above and is conventionally known and which can be moved up and down. <Outline of the discharging section C shown in FIG. 1> The discharging section C is provided with a discharging conveyor 22 which can be moved up and down by an elevating section (not shown).

<Overview of Printed Material Transport Mechanism 1 shown in FIG. 1> The printed material transport mechanism 1 is a wrapping transmission mechanism, and includes a front left and right double chain gear 23 and a rear left and right double chain gear 24.
Between the right and left transmission chains 25 (wrapped transmission links)
Has been passed over. Between the left and right transmission chains 25, six printing medium transport tables 26 are attached at equal intervals. The left and right transmission chains 25 are rotated by a drive motor 27. Each of the printing medium transport tables 26 includes a processing path 28a from the aligning section A to the discharging section C via the printing section B as the left and right transmission chains 25 rotate, and an aligning section from the discharging section C via the printing section B. A travels along the return path 28b leading to A while being guided by a guide (not shown).

<Improvement of the Printed Material Conveying Table 26> As shown schematically in FIG. 3, the printed material conveying table 26 is mounted on both sides of the processing path 28a in the moving direction (X direction). Mounting portions 29 and 30 are provided, and connecting portions 3 are provided on both sides in the left-right direction Y.
The right and left connecting portions 31 and 32 are integrally connected to the left and right sides of the front mounting table 29 and the left and right sides of the rear mounting table 30. The front and rear mounting bases 29 and 30 and the left and right connecting parts 31 and 32 form a printing material transport base 26 in a frame shape, and an avoidance hole 33 is provided therebetween.

Each of the printing material transport tables 26 has a mounting surface 29 on the front side of the front and back sides of the front and rear mounting tables 29, 30.
a, 30a, and the front and rear mounting tables 2 in the processing path 28a.
After moving with the front sides of 9, 30 facing upward, the discharge section C
At the boundary between the processing path 28a and the return path 28b, and after moving on the return path 28b with the back sides of the front and rear mounting tables 29 and 30 facing downward, the return path 28b and the processing path 28a Upside down at the boundary with.

The front and rear mounting tables 29 and 30 of each of the printing material transport tables 26 are respectively provided with left and right grippers 35 (positioning members) which can take a locked state for positioning the printing material W and a state for releasing the lock. Is provided. About this positioning means 34,
Although schematically illustrated, both left and right grippers 35 are moved in the left and right direction Y by a driving unit (not shown) so that the left and right grippers 35 approach and separate from each other on the front and rear mounting tables 29 and 30 respectively. The gripping arms (not shown) of this embodiment can be opened and closed with respect to the mounting surfaces 29a and 30a of the front and rear mounting tables 29 and 30 by a driving unit (not shown).
In addition, as the positioning means 34, the matching table 2
Alternatively, the suction function may be used similarly to the case of the printing table 14.

<Conveying Action of the Printed Material W shown in FIG. 4> * State of FIG. 4A (Alignment Section A) One of the printed material transport tables 26 is the alignment table 2 in the lower movement position. Stopped above. In the front and rear mounting tables 29 and 30 of the printing medium transport table 26, the left and right grippers 35 (see FIGS. 2 and 3) are separated from each other and unlocked.

4 (b) (alignment section A) When the alignment table 2 moves upward in the state of FIG. 4 (a), the front and rear mounting table sections 29 and 30 of the printing medium transport table 26 are aligned. The suction table 8 is inserted into the front and rear avoidance grooves 6 and 7 of the table 2, and the central suction table 8 of the suction tables 8 and 9 of the alignment table 2 is connected to the avoidance hole 3 of the printing material transfer table 26.
The mounting surfaces 29a, 30a on the front and rear mounting tables 29, 30 and the mounting surfaces 8a, 9a on the suction tables 8, 9 of the alignment table 2 are flush with each other.

4 (c) (matching section A) When the printing material W is supplied from the supply device 4 onto the matching table 2 in the state of FIG. 4 (b), the printing material W It is supported on the mounting surfaces 8 a, 9 a, 29 a, and 30 a, and is attracted to the alignment table 2. Then, the actual positions of the printing material W and the actual position of the printing material transport table 26 are detected by the CCD cameras 10 and 11 of the positioning device 3. After that, based on the result of comparing the actual position data with the pre-stored normal position data (the storage position data of the printing material W with respect to the printing material transport table 26), the matching table 2 is set in the XYθ direction together with the printing material W based on the result. The movement is adjusted, and the printing material W is set at a fixed position with respect to the printing material transport table 26. Next, the left and right grippers 35 (see FIGS. 2 and 3) approach each other on both the front and rear mounting table portions 29 and 30 of the printing material transport table 26 to lock and position the four corners of the printing material W, The suction of the alignment table 2 is released.

4D (alignment section A) When the alignment table 2 moves downward in the state of FIG. 4C, the front and rear mounting table sections 29 and 30 of the printing medium transport table 26 are aligned. As the suction tables 8 and 9 of the alignment table 2 move away from the printing-substrate transfer table 26, the central suction-table section 8 moves away from the front and rear avoidance grooves 6 and 7 of the table 2, and 26, the printing material W is transferred from the alignment table 2 to the printing material transport table 26.

4 (e) (printing section B) The printing medium transport table 26 having positioned the printing object W in the state of FIG. 4 (d) moves from the alignment section A to the printing section B, and moves downward. It stops above the print table 14 at the position.

4 (f) (printing section B) When the print table 14 moves up in the state of FIG. 4 (e), the front and rear mounting tables 29, 30 of the printing medium transport table 26 The suction table 1 is inserted into the front and rear avoidance grooves 16 and 17 of the table 14, and the suction table 1
8 and 19, the central suction platform 18 is inserted into the avoidance hole 33 of the printing material transport platform 26, and the front and rear mounting platforms 2 are used.
Placement surfaces 29a, 30a on 9, 30 and print table 14
The mounting surfaces 18a and 19a on the suction table portions 18 and 19 are flush with each other. The printing material W is placed on the printing material transport table 26.
Each mounting surface 1 of the printing table 14 is
8a and 19a adsorb. Then, printing is performed on the printing material W by the printing mechanism 15.

4G (printing section B) After printing, when the suction of the printing table 14 is released and the printing table 14 moves downward in the state of FIG. Are separated from the front and rear avoidance grooves 16 and 17 of the print table 14 and the suction table portions 18 and 19 of the print table 14 are separated from the printing material transport table 26. The central suction platform 18 is disengaged from the avoidance hole 33 of the printing material transport table 26, and the printing material W is transferred from the print table 14 to the printing material transport table 26.

4 (h) (discharge unit C) The print-substance transport table 26 in which the print-substance W after printing is positioned in the state of FIG. 4 (g) moves from the printing unit B to the discharge unit C. . Thereafter, both the front and rear mounting table portions 2 of the printing medium transfer table 26
At 9 and 30, the left and right grippers 35 (see FIGS. 2 and 3) are separated from each other and unlocked, and the printed material W after printing is carried out of the printed material transport table 26 by the discharge conveyor 22.

<Features of the present embodiment>
(Other than the other technical ideas described below). * On the printing material transport table 26, the printing material W is supported by the front and rear mounting tables 29, 30 at four front, rear, left and right corners, and is positioned by each gripper 35. Therefore, the printing material W is transported over the alignment portion A, the printing portion B, and the discharging portion C in a stable state without hanging down on the printing material transport base 26. Accordingly, it is possible to prevent damage to the printing object W (for example, the electric wiring board) and perform good printing.

An avoidance hole 33 is provided between the front and rear mounting tables 29 and 30 on the printing medium transport table 26. for that reason,
At the time of transfer of the print material W, the suction table portion 8 of the alignment table 2 and the suction table portion 18 of the print table 14 are inserted into the avoidance holes 33 in a state where the print material transport table 26 is superimposed on the alignment table 2 or the print table 14. Can be inserted. Therefore, the printing substrate W can be reliably attracted to the alignment table 2 and the printing table 14.

* The left and right connecting portions 31 and 32 connecting the front and rear mounting tables 29 and 30 are provided to form the printing material transfer table 26 in a frame shape, and the avoidance holes 33 are provided inside them. For this reason, the rigidity of the printing material transport table 26 can be enhanced, and the left and right connecting portions 31 and 32 can also function to maintain the space between the front and rear mounting table portions 29 and 30.

[Other technical ideas] The technical ideas (other than the claims) that can be grasped from the embodiment will be described. (A) In claim 1 or claim 2, each of the printing material transport tables 26 has a mounting surface 29a, 30a for supporting the printing material W on the front side of both the front and back sides of the mounting table portions 29, 30; In the processing path 28a, both the mounting tables 29 and 30 move upward with their front sides facing upward, and are turned upside down at the boundary between the processing path 28a and the return path 28b in the discharge section C, and the two mounting tables 29 are returned in the return path 28b. , 30 are turned downward, and are turned upside down at the boundary between the return path 28b and the processing path 28a in the alignment section A.

(B) In both the first and second embodiments, or in the above (a), both the mounting table portions 2 of the printing material transfer table 26 are provided.
9 and 30 are provided with positioning means 34 having respective positioning bodies (each gripper 35) capable of taking a locked state for positioning both sides of the printing material W and a state for releasing the lock.

(C) In claim 1 or claim 2 or in (a) or (b), the printing section B is a pair of mounting sections 29 of the printing material transporting table 26 that has reached the printing section B on the processing path 28a. , 30 is provided with a printing table 14 for transferring the printing material W. The printing table 14 moves relative to the mounting table portions 29, 30 of the printing material transport table 26, and with the relative movement, The two avoiding grooves 16 and 17 through which the two mounting tables 29 and 30 enter and exit, and the suction table 18 provided between the two avoiding grooves 16 and 17 and entering and exiting the avoiding hole 33 of the printing material transport table 26. Have. Therefore, in a state where the printing table 14 and the printing material transport table 26 are overlapped, collision between them is prevented, and the printing material W is inserted into the avoidance holes 33.
Can be surely adsorbed to the print table 14.

(D) In claim 1 or claim 2 or (a) or (b) or (c),
The aligning section A includes an aligning table 2 in which the printing material W is transferred between the mounting table sections 29 and 30 of the printing medium transporting table 26 that has reached the aligning section A on the processing path 28a.
Moves relative to the mounting table portions 29, 30 of the printing medium transport table 26, and with the relative movement, the mounting table portions 29, 3
It has two avoiding grooves 6 and 7 into and out of which the zeros enter and a suction table portion 8 provided between the two avoiding grooves 6 and 7 to enter and exit the avoiding hole 33 of the printing medium transport table 26. Therefore, collision between the alignment table 2 and the printing material transport table 26 in the overlapping state is prevented, and the printing material W is inserted into the avoidance holes 33.
Can be surely attracted to the alignment table 2 via.

[0035]

According to the first aspect of the present invention, there is provided a printed matter transport device for a screen printing machine.
6) The printing substrate (W) by the mounting tables (29, 30).
Print material (W)
Is transported in a stable state without sagging, and it is possible to prevent, for example, breakage of a print substrate (W) such as an electric wiring board. In addition, since there is an avoidance hole (33) between the two mounting tables (29, 30), for example, the alignment table (2) or the printing table (14) and the printing medium transport table (2).
6), the printing material (W) is inserted into the avoidance holes (3).
3) the matching table (2) and the printing table (1)
4) can be surely adsorbed.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the rigidity of the printing material transfer table (26) can be increased.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing a screen printing machine and a device for transporting a printed material according to the present embodiment.

FIG. 2 is a plan view schematically showing the printing medium transporting apparatus of FIG. 1;

FIG. 3A is a plan view schematically illustrating a transfer table of the printing medium transfer apparatus, and FIG. 3B is a side view schematically illustrating the transfer table.

FIG. 4 is a diagram illustrating the operation of the printing medium transport device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Printed material conveyance mechanism (wrap transmission mechanism), 15 ... Printing mechanism, 25 ... Transmission chain (wrap transmission link), 26
... Printed object transport table, 28a processing path, 28b return path,
29, 30: mounting table part, 29a, 30a: mounting surface, 3
Reference numerals 1, 32: connecting portion, 33: avoiding hole, A: matching portion, B: printing portion, C: discharging portion, X: front-back direction (moving direction of the printing material transporting table), Y: left-right direction, W: printing material.

Claims (2)

[Claims] An alignment section for supplying and positioning a printing medium, a printing section for performing printing on a printing medium after positioning by a printing mechanism, and a discharge section for discharging the printing medium after printing are arranged side by side. In the screen printing machine, a winding transmission mechanism is arranged over the alignment unit, the printing unit, and the discharge unit, and a plurality of printing material transport tables are attached to the winding transmission link, and each of the printing material transport tables is With the rotation of the winding transmission link, the processing path from the aligning section to the discharging section through the printing section and the return path from the discharging section to the aligning section through the printing section are moved. A printing-material transporting device for a screen printing machine, comprising: a mounting table for positioning both sides of a printing medium on both sides in a movement direction of the processing path; and an avoidance hole provided between the mounting tables. 2. The printing medium transport table has a connecting portion that connects both sides of one mounting table section and both sides of the other mounting table section to each other on both sides in a direction orthogonal to the moving direction in the processing path. 2. The apparatus according to claim 1, wherein the mounting table portion and the connecting portions form a frame surrounding the avoidance hole.