JPH04182129A - Full automatic screen printer - Google Patents

Abstract

PURPOSE:To print a resist at a time when a printed board is manufactured accurately by a method wherein a work charged onto an aligning stage is temporarily fixed and stopped, positional displacement with the position of printing is detected and adjusted, the work is attracted to a carrying-in table, printing is conducted at the position of printing, the table is retreated while leaving the work, and the work is carried out by an carrying-out table. CONSTITUTION:When a work W is charged into an aligner 70, the work is stopped by the front-rear section positioning mechanisms of a spare aligner 30, and set onto the top faces of left and right aligning stages 72 and a carrying-in table 165. Positioning marks on the work are projected onto a monitor TV by cameras 76, and displacement with the position of printing is detected, and adjusted by the aligning stages 72. The work is attracted and lifted by the carrying-in table 165, and made to travel between printing stages 243 divided into two, and printing is conducted. The rear end section of the work is elevated after printing and the carrying-in table is retreated, a carrying-out table 195 is positioned to the lower section of the work while being synchronized with the retreat of the carrying-in table, and the work is lifted and carried out. The movement of the cameras 76 is measured by the number of step pulses of a motor as a moving means.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is mainly applicable to applying a resist or the like to a printed circuit board, etc., by inserting a workpiece such as a printed circuit board, aligning the workpiece corresponding to the coating and printing position, and applying and printing. -Related to a fully automatic screen printing machine that automatically performs a series of operations such as ejection.

(Prior art) Conventionally, when applying resist to a printed circuit board (workpiece), a fully automatic screen printing machine or a one-shot machine equipped with an alignment table that positions the input workpiece in accordance with a predetermined coating and printing position has been used. It is provided. After the workpiece is placed on the alignment table, the alignment mark on the workpiece is read by a camera, and the alignment table is moved in the X direction, which is the transport direction of the workpiece, and in the Y direction, which is almost orthogonal to this. The displacement relative to the normal position is corrected by adjusting the movement in each direction of the θ angle, which is the inclination angle with respect to the direction. After alignment, the work fixed to the vacuum is transported to the printing device by the transport table.

(Problem to be Solved by the Invention) In such a conventional fully automatic screen printing machine, fixing of the aligned workpieces when the workpieces are transported to the printing device position by the transport table is difficult, for example, in accordance with Japanese Patent Publication No. 61-32144. As stated in the publication, a fixed support means of an air suction type vacuum structure is used.

However, in the case of printed circuit boards (industrial circuit boards), since many through holes are drilled in the workpiece, the vacuum may not be able to secure the workpiece sufficiently, resulting in misalignment during transportation.

In this way, if the position of the workpiece is not fixedly performed on the conveyance table, the alignment work that has already been performed by reading the alignment mark on the workpiece will be completely meaningless, and the position of the workpiece will not match the screen printing plate position. This causes printing misalignment. In other words, even if an input workpiece is positioned on an alignment table and supported by a vacuum, on a transport table that moves back and forth, there will be problems when it starts running at the alignment position, when it stops at the printing position, etc. Although subtle, positional deviations occur due to inertial action and other factors. Even if this positional misalignment is slight,
For printed circuit boards etc. that require precision, 11&
In some cases, the drawn circuit pattern was not reproduced accurately.

In addition, the position of the positioning mark displayed on the work may vary after the work is stopped due to differences in size, front and back, left and right positions, and other circumstances of the work being input. Even if the stop position of the workpiece is shifted to some extent in response to this, if the camera position is moved when setting the alignment origin position for detecting the alignment position again by the camera, If the amount of movement could not be calculated accurately, it would not be possible to deal with alignment marks that differ depending on the position, and it would be difficult to achieve accurate alignment work.

Therefore, the present invention has been created in view of the existing circumstances as described above, and is capable of automatically performing a series of operations such as loading a workpiece, aligning the workpiece, coating and printing a resist, etc., and discharging the workpiece. In particular, when detecting the position of a camera on an alignment device, the alignment position origin corresponding to various workpieces can be easily determined by setting parameters according to the amount of movement of the camera. Movement adjustment in the X, Y, and θ directions can be easily performed, and furthermore, when the workpiece after alignment is carried into the printing device, the tl! l The specified position in the printing device without causing any misalignment! The purpose of the present invention is to provide a fully automatic screen printing machine that allows accurate loading.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the fully automatic screen printing machine according to the present invention positions and stops the input workpiece W by the preliminary alignment device 30, and then stops the input workpiece W by the alignment device 70. to the printing position, and then the conveying device 150
It is sent to the printing device 240 by the carry-in table 165 of
It is designed to be carried out to a discharging device 230 by. The preliminary alignment device 30 has a positioning m-ellipse 35.45 for the front, rear, left, and right portions of the workpiece W placed on the alignment stage 72 to temporarily stop and position the front, rear, left, and right edges of the work W. In addition, the alignment device 270 displays the plurality of alignment marks M formed at predetermined positions on the workpiece W on the screen of the monitor television 78 using the camera 76, and detects positional deviations relative to a predetermined printing position. It includes a position detection mechanism 75 for detecting the position, and an alignment mechanism 110 for moving and adjusting the alignment stage 72 in each direction so as to correct this slight deviation. Further, the conveying device 150 moves back and forth between the aligning device 70 and the printing device 240, lifts the workpiece W that has been determined to be aligned onto the aligning stage 72, and also has a suction means 171 that sucks the workpiece W, and a suction device 171 that sucks the workpiece W, and a suction device 171 that sucks the workpiece W, and Carrying table 165 having clamping means 176 for clamping from the front and back
And the printing! 240 and the discharge device 230, and after printing is completed, the unloading table 195 travels backwards below the workpiece W lifted onto the printing stage 243, rises, lifts the workpiece W, and transports it forward. This is what we have in place.

In addition, the alignment stage 72 of the alignment device 70, the printing device 24
The printing stage 243 of No. 0 is configured to be divided into left and right sides along the conveyance direction of the workpiece W, and the carry-in table 165 and the carry-out table 195 of the conveyance device 150 are arranged in the respective central gaps.
It can be configured so that it moves forward and backward.

The matching device 70 includes a loading device 10 for loading the workpiece W.
, a pre-alignment device 30 can be incorporated.

The camera 76 of the position detection mechanism 75 in the alignment device 270 is moved by the camera adjustment mechanism 85 to the X direction motor 96 of the X direction moving means 95 and the The movement is controlled by the Y-direction motor 86 of the Y-direction moving means 85. The amount of movement for the movement control can be determined by calculating and measuring the number of step pulses in each motor 87, 97, and setting it as a parameter.

Further, the alignment mechanism 110 of the alignment device 70 supports the upper table 112 supporting the alignment stage 72 so as to be freely slidable on the lower table 111 that does not move, and moves the alignment mechanism 110 in the X direction along the conveyance direction of the workpiece W. The X-direction slide means 125 for advancing and retracting the upper table 112 and the Y-direction slide means 135 for advancing and retracting the upper table 112 in the Y direction substantially orthogonal to the conveyance direction are connected to the lower table 1.
11, and the tips of the slide hands H125, 135 are linked to the upper table 112, and these slide means 125, 135 are operated by driving separate alignment motors 136 that extend and retract in respective directions. It can be configured as follows.

Furthermore, the printing stage 243 of the printing device 240 can be configured to include a work lift mechanism 220 that lifts up the rear end of the work W in the transport direction after printing is completed. This work lift mechanism 220 includes a work lift 2 that swings in the vertical direction using the front end of the work W in the transport direction as a fulcrum.
21, and the work lift 221 is rocked into and out of the surface of the printing stage 243 by the operation of a lift cylinder 222 disposed directly in front of the printing stage 243.

(Function) In the fully automatic screen printing machine according to the present invention, when the workpiece W is loaded into the alignment device 70 by the loading device 10, the front and rear positioning mechanisms 35 in the preliminary alignment device 30 stop the workpiece W. Then, the left and right alignment stages 72, which do not run, and the carry-in table 165, which moves back and forth between the alignment device 70 and the printing device 240, are set at predetermined positions on the upper surfaces of each of them.

When the setting/separation is stopped, the camera 76 of the position detection mechanism 75 in the alignment device 70 photographs the positioning mark M on the workpiece W and displays it on the monitor television 78 to detect the relative positional deviation from the normal position. . If there is a relative positional deviation between the detected position and the printing position, the alignment mechanism 110
The alignment stage 72 is aligned in each of the X, Y, and θ directions by the operation of
The printer moves and adjusts the printer to accurately position it in correspondence with a predetermined printing position.

This alignment operation is performed by the operation of the alignment motor 136, the X-direction sliding means 125, the Y-direction sliding means 13,
This is done by adjusting the movement in each direction through each of the
The upper table 111 that supports the alignment stage 72 is replaced by the lower table 112 that does not move so that the position is detected by the position detection mechanism 75 and a predetermined accurate printing position is achieved.
Adjust the movement and correct it.

After the alignment is completed, the workpiece W is attracted to the upper surface of the carry-in table 165, and at the same time, the clamping means 176, which operates and protrudes above the carry-in table 165, clamps the workpiece W at the front and back in the conveyance direction, firmly supporting and fixing the workpiece W. and lift it onto the alignment stage 72.

After fixing the workpiece W on the carry-in table 165,
The carry-in table 165 moves forward to the printing position of the printing device 240 to carry the workpiece W therein, and after being stopped, screen printing is performed. The carry-in table 165 at this time is
It is located and stopped within a gap between print stages 243 that are divided into left and right parts in the printing device 240, and supports the workpiece W together with the print stages 243 in an adsorbed state. Further, the forward movement of the carrying-in table 165 is controlled by the carrying-out table 19.
5 is also moved forward in synchronization, and the printed workpiece W on the print stage 243, on which printing was being performed in a parallel process during alignment, is carried out.

When printing on the workpiece W is completed, the workpiece lift mechanism 220 operates to lift the rear end of the printed workpiece W on the aligning device [70 side] onto the print stage 243 in an inclined manner. Then, the workpiece W remains on the printing stage 243 by the backward movement of the carry-in table 165, while the carry-out table 195, which moves backward in synchronization with the backward movement of the carry-in table 165, is positioned below the workpiece W.

Next, at the same time as the alignment performed in the alignment device 1F70 is completed, the carry-out table 195 moves forward again to carry a new work W into the printing device 240.In synchronization with the carry-in table 165, the carry-out table 195 picks up the work W and prints it. device 240
Carry it out completely.

Thus, the alignment origin position by the camera 76 of the position detection mechanism 75 in the alignment device j70 is set in advance in correspondence with the various different positions of the positioning marks M on the work W to be input. That is, the Y direction moving means 85 of the camera adjustment mechanism 80 of the alignment device 70
When the camera 76 in the position detection mechanism 75 is controlled to move in each direction by the X-direction moving means 95, the amount of movement from the origin position is determined by the Y-direction motor 87 of the Y-direction moving means 85 and the X-direction moving means 95. It is calculated and measured by the number of step pulses in each direction motor 97.

By calculating and measuring, the camera 76 position is memorized and recognized, and based on that, the camera coordinate position after movement is detected, and the movable lid corresponding to the drive is input as a parameter to each motor 87, 97. By setting it, it is possible to move again after movement, and furthermore, to return to the origin position.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Overview> As shown in FIGS. 1 and 2, the printing press of the present invention loads a workpiece W, which is a printed circuit board, for example, to be coated and printed, into an alignment device 70 using a loading device 10, and then performs the alignment process. Preliminary alignment is performed by the preliminary alignment device 30 built into the device 70, and then main alignment is performed by the alignment device 70 itself. When the alignment of the six pieces is completed, the conveyor device 15
At the same time, the work W after alignment is sent to the printing device 240 by 0, and the work W after printing is sent to the printing device 240.
These devices 10, 70, 150, 230, and 240 are sequentially arranged along the transport direction of the work W.

Further, each of the alignment stage 72 in the alignment device 70 and the printing stage 243 in the printing device 240
It is divided into left and right parts along the conveyance direction. The loading table 165 and the loading table 195 of the conveying device 150 move forward and backward in synchronization within the center gap between the left and right portions, and the loading table 165 moves forward and backward in synchronization with the alignment device 7.
0 and the printing device 240, one carry-out table 5 reciprocates between the printing device 240 and the discharge device 230 while being raised and lowered in relation to its advance and retreat.

<Insertion device> The input device 10 is incorporated in the alignment device 70,
The left and right alignment stages 72 of the alignment device 70 are arranged in a gap between the left and right alignment stages 72, and the workpieces W input along the left and right work guides 62 of the preliminary alignment device 30, which will be described later, are moved to the alignment stage shift 2 position. It is something that can be brought up to.

As shown in FIGS. 1, 2, and 4 to 6, this loading device 10 itself has an alignment stage mounted on a loading frame 11 that is appropriately fixed and arranged above an alignment frame 71, which will be described later. It is provided with a conveying surface that protrudes above or recesses below 72 surfaces.

That is, the belt under plates 13 are connected to the left and right sides of the joint plate 12 at the rear of the input direction, and the belt under plates 13 are connected with an appropriate interval between them. A charging belt 16, which is stretched under tension so as to circulate on the upper surface of the plate 13, is driven and circulated by a charging motor 17 fixed on an alignment frame 71, for example. On the other hand, the shaft lift plate 1 is connected and fixed to the rear part of the belt under plate 13.
Cylinder rods of a lift cylinder 19 are fixed to the left and right sides of the substantially central portions of the belt under plate 13 and the belt under plate 13, respectively, and the belt under plate 13 can be moved in and out of the upper surface of the alignment stage 72 by operating one of the lift cylinders.

Also, the drive pulley 21 of the closing motor 17 is in a fixed position.
The drive belt 22, which is looped between the drive pulley 15 and the drive pulley 15 that moves up and down, is prevented from loosening by, for example, an idler means 25 disposed on the alignment frame 71, and is always kept under tension. The idler means 25 for this purpose is constructed so that an idler pulley 26 that slides and rolls within the drive belt 22 is pulled by a traction spring 27.

This loading device 10 drives the loading motor 17 and operates the lift cylinder 22 to move the loading belt 16, which is the transport surface, to the alignment stage 72 when loading the workpiece W.
Although the workpiece W is placed in the upwardly protruding position and run, the workpiece W is moved and fed in, but after the feeding is completed, the feeding belt 16 is retracted below the alignment stage 72 and the feeding belt 16 is stopped.

Pre-a matching device> The pre-a matching device 30, as shown in FIG.
0, it is incorporated in the aligning device 70, and includes front, rear, left and right positioning mechanisms 35 and 45 that temporarily stop and position the front, rear, left and right edges of the workpiece W input by the input device 10.

That is, as shown in FIG. 4, FIG. 5, FIG. 7 to FIG. The front and rear positioning mechanisms 35 that set preliminary alignment positions in the
Left and right positioning mechanisms 45 are respectively disposed for setting the alignment position in the Y direction substantially orthogonal to the conveyance direction of the workpiece W.

When the workpiece W is positioned by these positioning mechanisms 35 and 45, it is based on a reference position that is preset according to the size and front and back of the workpiece W, and is based on the front edge or rear edge of the outer shape of the workpiece W in the transport direction. Using two edges that are combined with one of the edges and either the right edge (front) or the left edge (rear) as a reference, move the workpiece W from the other edge side facing this edge that is the reference. This is how it is done.

<Front and rear positioning mechanism in preliminary alignment device> The front and rear positioning mechanism 35 is as shown in FIGS. 4 and 7.
A total of pairs of left and right alignment stages 72 are arranged on the inner edge of each of the alignment stages 72, which are divided into left and right sides.

That is, a feed screw 37 rotated by the drive of a positioning motor 36 placed and fixed at either of the front and rear ends of the inner edge of the alignment stage 72 is disposed along the loading direction and supported on the inner edge of the alignment stage 72. In this case, the screw directions of the first half and the second half are opposite to each other.

In addition, front and rear base plates 39 guided by a linear kite 38 disposed along the feeding direction are screwed to the front and rear parts of the feed screw 37 via feed nuts, and the rotation of the feed screw 37 Each of the base plates 39 is provided with front and rear stopper pins 42 which rise and fall with respect to the surface of the alignment stage 72 along the input direction by the operation of the undulation cylinder 41 so that the base plates 39 approach and move away from each other synchronously.

Further, the running start and end limit positions of the base plate 39, deceleration immediately before stopping, etc. are set by sensor means 43 including sensors for front and rear extreme positions and deceleration (see FIG. 7).

Therefore, when the loading device 10 is in the raised position and the workpiece W is loaded by the loading device 1o with the front stopper pin 42 standing up and protruding above the loading belt 21, the front edge of the workpiece W is stopped by the stopper pin 42. Positioned. Then, the loading device 10 descends and the alignment stage 7
The workpiece W is placed on the upper surface of the workpiece W, and the rear edge of the workpiece W is moved toward the reference position by the rear stopper pin 42 that stands up after the loading is completed, and is set at a predetermined position.

<Positioning mechanism for left and right parts in preliminary alignment device> As shown in FIGS. 4, 5, and 8 to 10, the left and right positioning mechanisms 45 are divided into left and right alignment stages 72, respectively. They are arranged symmetrically in pairs on the left and right sides along the input direction.

That is, on the surface of the alignment stage 72, there are guide elongated holes 46 along a direction substantially perpendicular to the input direction, before and after the input direction.
Open the hole. A feed screw 48 rotated by the drive of a positioning motor 47 arranged and fixed on the back surface of the alignment stage 72 is disposed along a direction substantially perpendicular to the input direction and supported on the back surface of the alignment stage 72. On the other hand, a joint plate 52 connecting and fixing the left and right linear plates 51 guided by a linear kite 49 disposed along the guide elongated hole 46 is screwed to the feed screw 48 via a feed nut. By rotating the feed screw 48, the alignment stage 72 is caused to travel back and forth in the direction of the inner edge. Furthermore, the linear plate 51 is provided with a slide plate 53 that protrudes above the guide elongated hole 46.
A left and right stopper pin 54 is fixed to the front edge of the slide plate 53, and a work holder 55 located on the upper surface of the alignment stage 72 is connected and fixed. This work hold 55 has a clamp base plate 56 fixed to a slide plate 53, and a clamp head 58 that is raised and lowered by the operation of a raising and lowering cylinder 57. When the clamp head 58 is lowered, its tip touches the upper surface of the work W. It is designed to be held under pressure.

In addition, each of these left and right positioning fi mechanisms 45 is configured to be able to operate independently, stopping movement of one of them and causing the other to move and move relative to the stopped reference position. This makes it possible to perform predetermined positioning.

Note that the reference numeral 61 in the figure is a bridge plate that connects the front and rear clamp base plates 56 in the loading direction.
Further, 62 is a workpiece ID fixed to the clamp base plate 57 so as to extend forward toward the starting end side of the alignment stage 72 in order to smoothly guide the workpiece W in the initial stage when it is introduced.

In addition, the running start and end limit positions of the linear plate 51 to slide plate 54, deceleration immediately before stopping, etc.
It is set by sensor means 63 including sensors for front and rear extreme positions and deceleration (see FIG. 5).

Therefore, when either of the left and right positioning mechanisms 45 is at the stop position, the workpiece W is loaded by the loading device 10, and when the front and rear edges are positioned and stopped, the other one moves toward the center of the workpiece W. When the stopper pin 55 comes into contact with the left and right edges of the workpiece W, the workpiece W stops traveling, and the rod 59 is lowered to the clamp to press and hold the workpiece W.

<Aligning Device> The work W that has been preliminarily aligned on the aligning stage 72 is corrected to a predetermined position corresponding to the printing position by the aligning device 70 itself. That is, in this alignment device 70, the work W that has been pre-aligned by the preliminary alignment device 30 and stopped and placed at a predetermined position is transferred to the printing device 2.
In order to accurately correspond to the predetermined printing position at 40, movement adjustment is performed in each of the X, Y, and θ directions with respect to the conveying direction, and the printing position is corrected to the correct position.

Therefore, the alignment device 70 is shown in FIG. 1, FIG. 2, FIG.
As shown in FIGS. 5 and 11 to 16, a plurality of alignment marks M formed at predetermined positions of the workpiece W on the alignment stage 72 are projected on the screen of a monitor television 78 by a CCD camera 76, Position detection mechanism 7 that detects positional deviation relative to a predetermined printing position
5, and an alignment mechanism 110 that moves and adjusts the alignment stage 72 in each direction to correct this positional deviation.

That is, the position detection mechanism 75 is provided above the alignment frame 71, and detects alignment marks M (see FIG. 14) formed on the upper surface of the workpiece W set on the alignment stage 72 stopped at the alignment position. ) The moving camera 76 detects the position of the workpiece W by reading the
A drive control method is adopted in which the position of the robot is recognized and stored based on the amount of movement relative to the origin position. Alignment mechanism 1
Reference numeral 10 has an upper and lower double structure in which an upper table 111 supporting an alignment stage 72 is moved and adjusted in each direction with reference to a lower table 112 disposed below the upper table 111.

Therefore, in the matching device 70, the matching stage 7
2 has an alignment position that is almost the same level as the printing position in the printing device 240, and the alignment stage 72 itself is divided into right and left sides in the transport direction of the workpiece W as shown in the figure. The loading table 16 (described later) in the conveying device 150 is placed between the printing position and the alignment position within the central gap between the alignment stages 72.
5 is reciprocated, the aligned workpiece W is carried into the printing device 240.

<Position detection mechanism in alignment device> As shown in FIGS. 1 to 3 and 14 to 16, the position detection mechanism 75 differs depending on the size of the work W, front and back, difference in left and right position, and other circumstances. Alignment mark M
It is equipped with a plurality of cameras 76 that are moved and adjusted in accordance with the positions and photograph the alignment marks M, and a monitor television 78 that displays the alignment marks M photographed by the cameras 76 in correspondence with the normal position reference line. (See Figure 2).

A monitor television 78 is mounted on a monitor stand 77 that is framed above the alignment frame 73. The cameras 76 are arranged as a pair on the left and right so as to photograph the alignment marks M provided approximately at the center of both the left and right sides along the conveyance direction of the workpiece W, and each camera 76 is attached to the alignment frame 71.
By the camera adjustment mechanism 80 provided above,
The movement is adjusted in the front, back, left and right directions along the conveyance direction of the workpiece W, so that different positions of the alignment marks M can be adjusted depending on the various workpieces W.

The monitor television 78 should be of a black-and-white display type so that it can read the alignment mark M sufficiently, or it should be made to project a colored image together with the camera 76 to obtain an image without any error. Note that the reference numeral 79 in the figure is a ring-shaped camera illumination section.

<Camera Adjustment Mechanism in Aligning Device> As shown in FIGS. 14 to 16, the camera adjustment mechanism 80 includes a first camera 76 located on the back side when the printing press of the present invention is viewed from the front, and a first camera 76 on the front side. The second cameras 76 located at The position of the workpiece W is aligned together with an alignment mechanism 110, which will be described later.

Therefore, an adjustment stand 81 formed above the alignment frame 71 is provided with Y-direction moving means 85 for independently moving the first and second cameras 76 in the Y-direction, and also in the X-direction. An X-direction moving means 95 is also provided.

The Y-direction moving means 85 includes a pair of Y base plates 8 disposed facing each other before and after the input direction of the workpiece W.
6 is mounted on the upper part of the adjustment stand 81, and the Y-direction feed screw 8 is rotated by the drive of a Y-direction motor 87 placed and fixed at either the front or rear end of this Y base plate 86.
8 is disposed along the Y base plate 86 and supported. Then, a pair of linear bases 91 facing each other in the front and back of the feeding direction are screwed into the Y direction feed screw 88 via a feed nut so as to be guided by a linear guide 89 provided on the inner surface of the Y base plate 86. In addition, the pinions 93 at both ends of the counter shaft 92 inserted between the linear bases 91 are engaged with the linear racks 94 attached to the Y base plate 86, and the rotation of the Y direction feed screw 88 causes the linear bases 91 to are configured to move and travel synchronously in a parallel state.

On the other hand, the X direction moving means 95 includes an X base plate 96 installed between the linear bases 91, and an X direction feed screw rotated by the drive of an X direction motor 97 arranged and fixed at either the front or rear ends of the X base plate 96. 98 is disposed along and supported by the X base plate 96. Then, the camera block 101 guided by the linear guide 99 disposed on the X base plate 96 is screwed into the X direction feed screw 98 via the linear nut, and
The camera block 101 is rotated by the direction feed screw 98.
is configured so that it is moved and run.

In each of the camera blocks 101, the first and second cameras 76 are connected to the camera base plate 102.
It is installed in such a way that its vertical position can be adjusted through the holder.

<Setting the camera position in the camera adjustment mechanism> In addition, the camera 76 position can be set in advance on the alignment surface that is the alignment stage 72.
Stepping motors are used as the Y-direction motor 87 and the X-direction motor 97 that are driven to move 6, and by inputting the specified movement amount as the number of step pulses,
Furthermore, since the number of step pulses is fed back, the X and Y coordinates of the camera 76 can be recognized and stored.

The coordinate origin of the camera 76 is
, the Y coordinate is the same as the origin. As shown in FIG. 14, the origin in the Y direction is determined by, for example, a Y direction origin sensor 102 of a proximity switch structure attached to the Y base plate 86.
Y direction sensor plate 1 attached to linear base 91
03 (see Figure 15) approaches, the 15th
As shown in the figure, the origin in the X direction is determined by, for example, an X direction origin sensor 106 with a proximity switch structure attached to the X base plate 96, or an X direction sensor plate 107 attached to the camera block 101 (see FIG. 16). When they approach each other, they are detected. In addition, a limit sensor 108 and a deceleration sensor 109 are also provided, which instruct the linear base 91 and camera block 101 to decelerate when they approach the limit position, origin, or limit position, respectively.

Therefore, the coordinate registration method is to give an instruction to each of the Y-direction motor 87 and the X-direction motor 97 to return to the origin.

When that instruction is given, these motors 87 and 97 are driven to move the camera 76 toward the origin sensors 102 and 106, and stop when the origin position detection signal is turned on. At this time, if an instruction to return to the origin is given while the camera 76 is at the origin position, it moves to the side opposite to the origin sensors 102, 106 by the specified number of step pulses, and then moves to the origin sensor 102, 106 side again. This is so that a return to origin is performed. Then, at the position where the return to origin is performed, the scale of the scale mounted on the alignment stage 72 is displayed on the monitor television 78 using the camera 76, and while viewing this, the X and Y coordinates at the actual position of the camera 76 are determined. After that, the determined X and Y coordinates are memorized, and the coordinates of the camera 76 position at the next time of movement are determined using the coordinates as a reference.6 Note that 82 in the figure indicates the positive and negative This is a switch mechanism consisting of four switches that move the camera 76 in each of the four Y directions (see FIG. 2).

<Alignment mechanism in alignment device> On the other hand, as described above, the alignment mechanism 110 has a double structure of upper and lower tables, and the upper table 11 is aligned with respect to the lower table 111 that does not move and serves as a lower reference.
2 is moved and adjusted in each direction, and the alignment stage 72 supported and fixed in a hierarchical manner is positioned via a table joint 113 erected on an upper table 112.

That is, as shown in FIGS. 5, 11 to 13, the upper table 112 is made to be freely movable on the lower table 111 via the support means 116, and the connecting means 118 is It is placed and supported in such a way that it is prevented from floating up.

The support means 116 is arranged, for example, at the four corners of the upper surface of the lower table 111, and is formed into a spherical washer structure having a free ball 117 that is in contact with the lower surface of the upper table 112 in a freely rotating state (see FIG. 5). reference).

The connecting means 118 are arranged, for example, in pairs on the left and right sides of the lower table along the loading direction of the workpiece W, and have a size corresponding to the adjustable movement range of the upper table 112 itself, as shown in FIG. Upper table 112
A free hole 119 is drilled in itself, and the upper surface of the slide base block 121 fixed on the lower table 111 is brought into contact with the lower surface of the upper table 112. It is fixed by a lock bolt 123 that is inserted through a free hole 119 and screwed into the slide base block 121. Note that the upper surface of the slide base block 121 and the upper table 111
On the upper and lower surfaces and the lower surface of the slide base plate 121,
By interposing and fixing the donut disk-shaped slide metal 124, sliding smoothness on each contact surface is achieved.

The X-direction slide means 125 moves the upper table 112 forward and backward in the X direction along the transport direction of the workpiece W, and the Y-direction slide means 135 moves the upper table 112 back and forth in the Y direction substantially orthogonal to the transport direction.
The slide means 125 and 135 are arranged at 11 and the tips of each slide means 125 and 135 are connected to the upper table 112, and these slide means 125 and 135 are operated by driving separate alignment motors 136 that extend and retract in each direction. be. Note that the X-direction sliding means 125
In addition, the Y-direction slide means 135 uses the front and rear ends of the alignment mechanism 110 in the transport direction as separate application points in a direction perpendicular to the transport direction and at an inclined angle with respect to the transport direction. upper table 11
2 in each direction (see Figure 11 N) 4.
6 rotates the table shaft 126 supported by the lower table 111 in a direction perpendicular to the transport direction. A table ball screw 127 that is coaxial with the table shaft 126 is connected to the table shaft 126, and the bush shaft 128 is moved forward and backward through the table ball screw 127 that is elastically moved forward and backward as the table shirt 81260 rotates. On the other hand, upper table 1
Table slide block 129 fixed at approximately the center of the rear surface of 12 - A table link 131 having a roughly triangular planar shape, whose tip end is connected to the side surface and whose rear end is connected to the bushing shaft 128 is attached to the lower table 111.
It should be pivoted to.

Further, on the other side of the table slide block 129, an adjustment pin 133 of a table adjustment unit 132 with a built-in spring fixed to the lower table 111 along the loading direction is pressed. Therefore, the bushing shaft 128 moves forward and backward by moving the upper table 112 by the elastic force of the table link 131 and the table adjustment unit 132 themselves. It moves forward and backward in the sending direction.

On the other hand, the Y direction sliding means 135 has no table link 131 in the X direction sliding means 125;
The table slide block 129 is the upper table 1
12 is fixed at both front and rear ends in the input direction, respectively.
The other structure is the same as that of <125> except for the X-direction slide means 125, and the same structure is described with the same reference numeral.

The Y-direction slide means 135 are arranged at the front and rear in the input direction, and are moved forward and backward in the same direction to move the Y-direction.
direction, and by being moved forward and backward in different directions, they are tilted at an angle of θ on the matching horizontal plane.

The upper table 112, whose movement is adjusted in each direction by the X-direction slide means 125 and the Y-direction slide means 135, also integrally moves each of the left and right alignment stages 72 through the table joint 113. The movement is adjusted and the workpiece W is set to a precise printing position.

Further, as shown in FIGS. 11 and 13, the alignment motor 136 is connected to the alignment frame 7 located on the side of the lower table 111.
1, and by the linear kite 137,
It is fixed on a motor slide base 138 that slides substantially perpendicular to the input direction of the workpiece W, and follows the table ball screw 127 that moves back and forth. Further, the sliding movement of the alignment motor 136 is controlled by a sensor seat 1 attached to the motor slide base 138.
41 is the origin sensor 1 installed on the alignment frame 73
42. By being detected by the limit position sensor 143, confirmation of the origin position, stopping at the forward/backward limit position, etc. are controlled.

<Transport device> Carrying the workpiece W from the alignment device 70 to the printing device 240,
The workpiece W is carried out from the printing device 240 to the discharge device 230 by the carrying-in table 1, which is reciprocated between these devices.
65, by a transport device 150 having an unloading table 195.

This transport equipment! 150, as shown in FIG. 1, FIG. 2, and FIG.
41, a total of a pair of guide rails 151 are laid across the discharge frame 231 along the left and right sides of the transport direction of the workpiece W;
The carrying-in table 165 is placed on the guide rail 151 by the running guide 152 fixed to the lower surface, and the carrying-out table 195 is placed on the guide rail 151 by the running guide 196 fixed to the lower surface, and the carrying-in table 165 and the carrying-out table are placed on the guide rail 151. The table 195 is constructed by connecting the carry-out table 195 to the front of the carry-in table 165 via an extendable joint means 201.

For example, a conveyor belt 154 circulates by being driven by a conveyor motor 153 installed and fixed on the printing frame 241.
The loading table 165 is fixed to the loading table 165.
This loading table 16
Following the reciprocating movement of step 5, when the loading table 165 retreats toward the aligning device [70] with the operation of the joint means 201, the distance from the loading table 195 widens, and the loading table 165 moves forward toward the printing device. In this case, the distance from the unloading table 195 is narrowed.

Furthermore, when the loading table 165 moves forward, it is in a floating state protruding above the alignment stage 72 and a printing stage 243 (to be described later), and when printing at the printing stage 243 position, it is on the same level as the printing stage 243. ,
When retracting, the printing stage 243 and the alignment stage 72 are recessed downward, and the elevating means 1 is used for this purpose.
There are 66. Furthermore, this loading table 165
, there is a suction means 1 for fixing the workpiece W to be carried in.
71 and clamping means 176 are provided to prevent displacement during transport.

On the other hand, the unloading table 195 itself is in a floating state protruding above the printing stage 243 when it moves forward.
During ejection at the ejection device 230 position and printing device 2, which will be described later.
When retracting to the 40 side, the ejection surface of the ejection device 230 is depressed downward, and the elevating means 216 is used for this purpose.
is provided.

Note that a magnetic plate 156 is attached to the rear end of the carry-in table 165, and is magnetically attracted to magnets 157 placed at the conveyance start position end of the aligning device 70 and the conveyance start position end of the printing device 240, respectively. The stopped state is maintained at the beginning of the m-feed and at the end of the conveyance, and a damper 158 is provided to cushion the impact at the end of forward and backward movement.

<Carry-in table of the transport device> The carry-in table 165 has a predetermined wall thickness and is located on the upper surface of the carry-in table 165, as shown in FIGS. 18 to 21.
5 an elevating cylinder 16 whose main body is fixed to a cylinder base plate 167 that straddles the guide rail 151;
8, the lifting means 166 is adapted to be guided up and down via a lifting kite 169. The elevating cylinders 168 have a tandem structure and are arranged at the front and rear of the main body of the carrying table 165, respectively, and are controlled so that the elevating and lowering intervals are two stages, and the elevating and lowering cylinders 168 are controlled to have two stages of elevating and descending intervals. For example, 2
This is a binding of 3 fights or 5 cities.

The interval between elevations and descents of the carry-in table 165 main body is determined by a combination of the ON-OFF detection states of the sensor plate 192 attached to the back and the two sensors 193 arranged above and below, with only the upper sensor 193 being ON. If only the lower sensor 193 of 5ruI and 20w is ON, the 5ruI will be in the raised position, and if both are ON, the lower sensor 193 will be in the lowered position (see FIG. 21).

In addition, suction means 171 on this carry-in table 165
In this case, a suction pipe 173 is connected to a vacuum pump (not shown) or the like, and the suction pipe 173 communicates with a large number of suction holes 172 drilled in the upper surface of the main body of the carry-in table 165 along the left and right sides of the main body of the carry-in table 165.

Further, the clamping means 176 clamps and fixes the workpiece W on the carry-in table 165 at the alignment position from the front and back in the carry-in direction after the alignment is completed, and is configured symmetrically in the front and back. Therefore, as shown in FIGS. 18 to 21, on the side surface of the linear base plate 177 that is vertically provided on the main body layer surface of the loading table 165 along the conveying direction,
A slide base plate 181 and a clamp base plate 186, which are slid and guided by a linear guide 178 disposed on the side surface of the linear base plate 177, are arranged in front and behind each other. The slide base plate 181 includes
A lock cylinder 184 is attached to advance and retreat a lock rack 183 that engages with a longitudinally long base rack 182 disposed on the side of the linear base plate 177, and the slide base plate 1
81 itself can move forward or retreat! g or maintain the positioning stop. The clamp base plate 186 is moved forward and backward by the operation of a slide cylinder 185 attached to the slide base plate 181. Also,
The clamp base plate 186 has a hook-shaped clamp plate 189 that is moved up and down via a vertical slide guide 188 by the operation of a clamp cylinder 187 attached to the clamp base plate 186. It is made to protrude and retract from the upper surface of the carry-in table 165 main body through a bored long clamp hole 191.

In the past, this clamp plate 189 itself was recessed into the lower surface of the main body of the carry-in table 165 when the carry-in table 165 was positioned on the aligning device 70 side and alignment was in progress, and after the alignment was completed, the clamp plate 189 was recessed into the bottom surface of the carry-in table 165 body. Upon operation, a long clamp hole 1 is formed on the upper surface of the carry-in table 165 main body.
91 , and then slides by the operation of the slide cylinder 185 , and presses and fixes the work W to the upper surface of the table body 166 by the operation of the clamp cylinder 187 . Next, after being conveyed to the printing device 240, the workpiece W is operated in reverse to release it, and then recessed into the lower surface of the main body of the carry-in table 165 so as not to interfere with the printing operation in the printing device 240.

On the other hand, as shown in FIGS. 22 and 23, the carry-out table 195 advances and retreats on the guide rail 151 at the same time as the carry-in table 165, as described above. It is mounted via a traveling guide 196. Therefore, the carry-in table 165 is located in front of and connected to the carry-in table 165 via an extendable joint means 201, and is also connected to the print stage 2 in the printing device 240.
When retreating to the 43 side, the workpiece W on the printing stage 243 is recessed into the printing stage 243 side.
The device is provided with a lifting means 216 that places the device in a raised position when lifting and carrying it out, and lowers it again when the device reaches the ejecting device 230 position.

The joint means 201 connects a slide base plate 203 between the lower ends of lower plates 202 vertically disposed on the left and right sides of the carry-out table 195 main body, and a joint cylinder 205 is fixedly arranged on the slide base plate 203 via a cylinder mount block 204. do. On the other hand, a pair of left and right joint shafts 207 connected to a flat, rectangular-shaped moss block 206 attached to the front end of the loading table 165 are slid by a linear guide 208 provided on the slide base plate 203. The cylinder rod of the joint cylinder 205 is connected to a shaft block 209 surrounding the cylinder rod.

In addition, a cylindrical urethane bumper 211 is fitted into the joint shaft 207 to prevent impact with the lower plate 202, which is vertically installed at the rear of the carry-out table 195 itself, when the joint shaft 207 itself is extended. MIti, and furthermore, the joint cylinder 205 when the joint shaft 207 is reduced by the damper 212 attached to the cylinder mount block 204.
It is designed to buffer the impact.

The elevating means 216 connects the cylinder rod of an elevating cylinder 214 fixed to the slide base plate 203 at the rear position and the cylinder pace plate 217 at the front position to the main body of the carry-out table 195, and connects the cylinder rod of the elevating cylinder 214 fixed to the slide base plate 203 at the rear position and to the cylinder pace plate 217 at the front position, and The slide shaft 219 guided by the kite 218 is moved to the unloading table 195.
It is fixed to the bottom of the main body.

In addition, the code 213 in the figure is a cylinder (205°214)
This is an air pipe for supplying air to operate.

In this conveyance device 150, when the carry-out table 195 also travels following the reciprocating movement of the carry-in table 165,
The distance between the carry-out table 195 and the carry-in table 165 is wide when retreating toward the aligning device 70 side, and narrow when moving forward toward the printing device side 240. You can set the spacing compactly. And again, loading table 1
65. The lifting and lowering operations related to the traveling of the carry-out table 195 are such that when the carry-in table 165 carries the workpiece W into the printing device 240 and when the carry-out table 195 carries out the work W from the printing device 240, each is in the raised position; table 165
When the transfer table 195 retreats to the aligning device 70, and when the carry-out table 195 retreats to the printing device 240, both are in the lowered position, and these operations are performed simultaneously and smoothly.

<Work Lift Mechanism> In addition, in order to smoothly move the carry-in table 165 in the transport device 150 from below the work W placed on the print stage 243 in the printing device 240 and the carry-out table 195 to move backward. , the workpiece W placed on the printing stage 243 after printing is completed
Work lift mechanism 220 or printing device 240 that lifts
It is incorporated in the print stage 243 part (
(See Figures 1 and 20).

This workpiece lift mechanism 220 is installed on the inner surface of each of the printing stages 243, which are divided into left and right sides in the transporting direction of the workpiece W, via stage level bolts 244 erected on the printing frame 241. device 150
They are arranged as a pair on the left and right sides located outside of the carry-in table 165 and the carry-out table 195. As shown in FIG. 24, the work lift 221 is swung up and down with the front end of each of the inner surfaces of the divided printing stage 243 in the transport direction of the work W as a fulcrum.
In addition, a lift cylinder 2 is installed directly in front of the printing stage 243 at the rear of the workpiece W in the transport direction.
22 cylinder rod, the first link plate 223,
Base block 224 attached to the back of the printing stage 243
The workpiece lift 221 is connected to the workpiece lift 221 through a link shaft 225 supported by the print stage 243 and a second link plate 226, and the workpiece lift 221 is oscillated into and out of the printing stage 243 surface by the operation of the lift cylinder 222. .

The workpiece lift mechanism 220 operates after the printing operation in the printing device 240 ends and immediately before the carry-in table 165 and the carry-out table 195 in the transport device 150 move backward, and lifts up the rear side of the workpiece W in the transport direction. As a result, below the work W, the transport device 1
The carrying-in table 165 at 50 retreats toward the aligning device 70 while leaving the workpiece W therein, and the carrying-out table 195 similarly moves backwards downward to carry out the workpiece W. It is possible.

<Discharge Device> The work W carried out from the printing device 240 by the carry-out table 195 of the conveyance device 150 is discharged and stored at a predetermined location by a discharge device 230 disposed on the side of the printing device 240.

That is, the discharge device 230, as shown in FIG.
A belt under plate 233 is connected between the front and rear support members 232 (see FIG. 3) fixedly arranged on the ejection frame 231 in the ejection direction. In between, the discharge belt 23 is stretched around the belt under plate 233 in a tension state so as to circulate on the upper surface of the belt under plate 233.
6 is fixed to the ejection frame 231.
It is configured so that it is driven and circulated by.

Further, the ejection surface of the ejection belt 236 is set to be located below when the ejection table 195 of the conveyance device 150 is in the raised position, and to be located above it when it is in the lowered position. There is.

<Printing device> As described above, the workpiece W is accurately positioned at a predetermined position corresponding to the printing position by the aligning device 270.
Loading table 1 that travels forward in the transport device 150
65 to the printing device 3F240, and the upper surface of the workpiece W is coated with, for example, resist.

As shown in FIG. 1, FIG. 2, and FIG. The squeegee unit 251 applies the resist ink placed on the upper surface of the workpiece W.

Thus, the printing surface on which the workpiece W is placed and set is formed by carrying in the left and right printing stages 243, which are divided into left and right sides in the transport direction of the workpiece W, and the workpiece W, and after carrying the workpiece W, the left and right printing stages 243 and 244 are mutually separated. It is formed by a carry-in table 165 that is stopped at a central position 1 between the two.

The printing stage 243 is provided with a suction means 245 for fixing the workpiece W, and the suction means 245 consists of a large number of perforations arranged on the upper surface of the printing stage 243, substantially orthogonal to the transport direction of the workpiece W. A suction pipe 247 communicated with the suction hole 246 is connected to a vacuum pump (not shown) or the like.

The suction holes 246 are arranged substantially perpendicularly to the conveyance direction of the workpiece W, and communicate with each suction vibrator 247 as a group. By opening and closing,
Care is taken to stop unnecessary suction operation in the suction hole 246 depending on the size of the workpiece W.

The squeegee unit 251 travels in a direction substantially perpendicular to the transport direction of the workpiece W, and a squeegee 254 is mounted on a squeegee pipe 253 installed between carriage blocks 252 disposed on the left and right sides of the travel direction, and a squeegee 254 is mounted on a doctor pipe 2
55, a doctor 256 is fixed respectively. These squeegee 254 and doctor 256 are controlled by a predetermined vertical movement mechanism, and when the running direction is changed to forward or backward while the squeegee 254 and doctor 256 are running, the squeegee 254 is lowered to move the screen printing plate during printing. The work W on the print stage 243 and the carry-in table 165 is rubbed on the print stage 242 and printed on the work W on the loading table 165. When not printing, the doctor 256
is lowered and runs in contact with the screen printing plate 242 to uniformize the density of the resist ink that has shifted during coating printing.

In addition, the reference numeral 257 in the figure is a bias mechanism that adjusts the deviation of the squeegee unit 251 in the running direction, and 258 is a bias mechanism that adjusts the deviation between the screen printing plate 242 and the workpiece W during application printing using the squeegee 254. This is an office computer mechanism that allows you to do this.

<Example of operation> Next, an example of the operation of the printing press of the present invention will be explained.

When resist ink or the like is coated and printed on the workpiece W by the printing device W240, the aligning device 70 and the printing device 240 are used to set accurate positioning on the workpiece W.
The workpiece W is moved back and forth between the two and trial printing is performed.

At this time, the camera 76 of the position detection mechanism 75 in the alignment device 70 is moved and adjusted by the camera adjustment mechanism 80, so that it can be moved to specific positions on the workpiece W that are different due to differences in size, front and back, left and right directions, etc. The position of the projection relative to the displayed positioning mark M is adjusted, and the matching position in the matching device 70 is set to correspond to the printing position in the printing device 240. The camera 76 whose movement has been adjusted is memorized by the amount of movement from its origin position or the number of step pulses in the Y-direction motor 87 and the X-direction motor 97, and by registering the coordinate origin, a matching origin position can be obtained. .

The work W loaded into the alignment device [70 by the loading device 10 is stopped by the front stopper pin 42 of the front and rear positioning device 1aB5 in the preliminary alignment device 30, and placed on the alignment stage 72.

That is, the workpiece W input into the alignment device 70 is transferred to the alignment stages 72 on the left and right portions that do not travel, and to the printing device 240.
The loading table 165 is set and stopped at a predetermined position on the upper surface of each loading table 165, which moves back and forth when the loading table 165 is opened.

At this time, the pre-alignment device 30 sets and stops the two edges of the workpiece W, which are a combination of the front and rear edges in the running direction and the left and right edges, as a reference position, and the alignment device 70, for example, To facilitate correspondence to a reference position for position detection by a position detection mechanism 75 of a positioning mark M attached to a workpiece W without matching on the front and back surfaces or on the left and right surfaces.

When the set is stopped, the positioning mark M is photographed by the camera 76 of the position detection m structure 75, and the positioning mark M is photographed by the camera 76 of the position detection m structure 75.
If there is a positional deviation relative to the printing position, the aligning mechanism 110 operates to detect the positional deviation relative to the normal position. Adjust the movement in each direction of θ to accurately position the printer at a predetermined printing position.

This alignment operation is performed by the operation of the alignment motor 136, the X-direction sliding means 125, the Y-direction sliding means 13,
The upper table 111 is moved and adjusted relative to the lower table 112 which does not move, so that the position is detected by the position detection mechanism 75 and the upper table 111 is moved to a predetermined accurate printing position. This is done by correcting the problem.

As a result, the left and right alignment stages 72 fixedly arranged on the upper table 111 are moved in the X direction, which is the transport direction of the work W, in the Y direction, which is almost orthogonal thereto, and at the θ angle, which is the inclination angle with respect to the transport direction. The movement is adjusted in each direction to correct the position. After straightening, the work W is attracted to the upper surface of the carry-in table 165 by suction operation by the suction means 171 on the carry-in table 165, and at the same time, the clamp means 176 which operates to protrude above the carry-in table 165 moves the work W in the direction of travel. The workpiece W is supported and fixed so as to be sandwiched between the front and back, and the workpiece W is lifted onto the alignment stage 72 by the operation of the lifting means 166.

When alignment and fixation are completed, the carry-in table 165 moves forward to the printing position of the printing device 240 to carry the workpiece W therein, and after being stopped, screen printing is performed. At this time, the carry-in table 165 is stopped within the printing device 240 by being located within the gap between the print stages 243 which are divided into left and right parts, and furthermore, the carry-in table 165
Printing stage 2 where the 65 main body descends and becomes the same level surface
Together with 43, the workpiece W is supported in an adsorbed state. Further, the forward movement of the carry-in table 165 also causes the carry-out table 5 to move forward in synchronization, and the printed workpiece W on the printing stage 243 is carried out.

When the screen printing on the workpiece W is completed, the rear end of the printed workpiece W on the aligning device 70 side is lifted up in an inclined manner by the workpiece lift mechanism 220 on the print stage 243, and the carry-in table 165 is moved back. The workpiece W remains on the printing stage 243 even during the traveling. Then, in synchronization with the carrying-in table 165 moving backward into the alignment device 70, the carrying-out table 195 also moves backward into the printing device 240 at a recessed position relative to the top surface of the printing stage 243, and then the carrying-out table 1
95 rises and lifts the workpiece W.

During this time, in synchronization with the loading table 165, which moves forward again at the same time as the alignment performed by the alignment device 70 ends,
The forward-moving carry-out table 195 carries out the workpiece W from the printing device 240 . At the same time as this unloading, the printing device 24
At 0, a new workpiece W is carried in and printing is prepared.

On the other hand, the unloading table 1 has traveled forward to the unloading device 230.
95 descends and places the work W on the discharge device [230, and the placed work W is discharged and stored at a predetermined storage location by the discharge device 230.

(Effects of the Invention) The fully automatic screen printing machine of the present invention is configured as described above, and therefore can automatically perform a series of operations such as loading the workpiece W, alignment, coating printing of resist, etc., and ejection. For example, it is possible to accurately apply and print a resist when manufacturing a printed circuit board or the like.

Furthermore, the carry-in table 165 that carries the aligned workpiece W into the printing device 240 is equipped with not only a suction means 171 that attracts the workpiece W but also a clamping means 176 that clamps the workpiece W at the front and back in the conveyance direction, so that printing is possible. The work W after alignment corresponding to the position can be carried into the printing apparatus 240 while maintaining its precise alignment position. Therefore, for example, there is no room for positional deviation due to inertial action that occurs during conveyance, and accurate coating printing on the workpiece W is ensured without deviation between the alignment position and printing position 1.

On the other hand, the camera adjustment mechanism 80 in the alignment device 70
can controlly move the camera 76 in the position detection mechanism 75 in each direction by the Y-direction moving means 85 and the X-direction moving means 95, and the amount of movement is determined by setting parameters for calculating and measuring the amount of movement from the origin position. This is made possible by That is, when the Y-direction motor 87 in the Y-direction moving means 85 and the X-direction motor 97 in the X-direction moving means 95 each move with respect to the origin position, the moving lid corresponding to the drive is always input as a parameter, and after the movement It is always possible to re-move, return to the origin position, sweep, etc. For this purpose, the positioning mark is adjusted depending on the size of the workpiece W, the front and back sides, differences in left and right positions, and other circumstances.

- As the M position varies in various ways, when setting the alignment origin position for detecting the alignment position by the camera 76 again in response to this, the alignment origin position is set to correspond to the origin position unique to the camera 76. This increases the versatility of the work W to be processed.

In addition, when initializing alignment positioning for the workpiece W of the printing press of the present invention, the external dimensions of the workpiece W are determined while reciprocating the workpiece W between the stopping position of the workpiece W in the aligning device 70 and the printing position of the printing device 240. By measuring and correspondingly setting the movement amount parameters for controlling the movement of the camera 76 in each direction, it is possible to efficiently perform setup work for workpieces W having different external dimensions before starting printing. .

The conveying device 150 moves forward and backward in synchronization with each other in the gaps between the alignment stages 72 that are divided into left and right sides, and between the printing stages 243 that are also divided into left and right sides, and is moved up and down in relation to the forward and backward movement. Loading table 165
Since it is provided with a carry-out table 195 at the front and rear, the workpiece W can be carried in and carried out smoothly. Further, in the alignment device 70, the loading device 10 and the preliminary alignment device 30 are incorporated, and since the loading table 165 is moved forward and backward by these, loading the work W, stopping after loading, and preliminary alignment after stopping. By performing the main alignment and main alignment at the same place, the overall device combination can be made compact. Furthermore, since the carry-in table 165 is positioned and fixed at the alignment position and the printing position, there is no misalignment during alignment and printing, and the system can be reliably set. Perform proper alignment and printing.

The matching mechanism 110 of the matched wave 3F70 includes a matching stage 72.
The upper table 111 supporting the lower table 11
The lower table 1 of the alignment stage 72 on which the work W is placed is supported so that it can freely slide on the lower table 1.
To facilitate movement position adjustment in each direction from the 12 sides. Furthermore, the X-direction sliding means 125 and the Y-direction sliding means 135 provided on the lower table 112 are operated by respective alignment motors 136 that extend and retract the sliding means 12 and 135 in the respective directions. Therefore, it is possible to reliably control each direction and improve its accuracy.

It should be noted that the fully automatic screen printing machine of the present invention is fully applicable not only to resist printing on printed circuit boards, but also to general printing, and is of course not limited to the embodiments.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view, Fig. 2 is a front view, Fig. 3 is a side view, and Fig. 4 shows an example in which a charging device and a preliminary alignment device are incorporated. 5 is a partially cutaway side view, FIG. 6 is a side view of the loading device, and FIG. 7 is a diagram showing front and rear positioning. 8 is a plan view of the left and right positioning mechanisms, FIG. 9 is a front view, FIG. 10 is a front view of the main parts showing the operation of the clamp mechanism, and FIG. 11 is a diagram of one of the alignment mechanisms. 12 is a sectional view of the connecting means between the upper table and the lower table, FIG. 13 is a front view of the alignment motor section, FIG. 14 is a partially cutaway plan view of the position detection mechanism, and FIG. 15 is also a front view, FIG. 16 is a side view, FIG. 17 is a front view of the conveyance device, FIG. 18 is a partially cutaway plan view of the loading table, FIG. 19 is a front sectional view, and FIG. Similarly, FIG. 21 is a side sectional view of a part of the sensor in the lifting means, FIG. 22 is a partially cutaway plan view of the carry-out table, FIG. 23 is a front sectional view thereof, and FIG. 24 is a side view of the workpiece lift mechanism. , FIG. 25 is a side sectional view of the printing device. M...alignment mark, W...work, 10...
Loading device, 11... Loading frame, 12... Joint plate, 13 River belt under plate, 14.
...Tension pulley, 15...Drive pulley, 1
6... Closing belt, 17... Closing motor, 18...
・Shaft lift plate, 19... Lift cylinder, 21... Drive pulley, 22... Drive belt,
25... Idler means, 26... Idler pulley,
27... Traction spring, 30... Preliminary alignment device, 35... Front and rear positioning mechanism, 36... Positioning motor, 37... Feed screw, 38... Linear guide, 39... Base plate, 41... Lifting cylinder, 42... Front and rear stopper pin, 43... Sensor means, 45... Left and right positioning mechanism, 46...
Guide slot, 47... Positioning motor, 48... Feed screw - 49... Linear guide, 51... Linear plate, 52... Joint plate, 53...
・Slide plate, 54... Left and right stopper pin, 55... Work hold, 56... Clamp base plate, 57... Lifting cylinder, 58... Clamp head, 61... Bridge plate, 62...・・・
Work kite, 63...sensor means, 70...alignment device, 71...alignment frame, 72...
...Alignment stage, 75...Position detection mechanism, 76...Camera, 77...
・TV stand, 78...Monitor TV, 7 pieces・
...Camera lighting unit, 80...Camera adjustment mechanism, 81...Adjust stand, 85...Y direction moving means, 86...Y base plate, 87...Y direction motor, 88...Y Directional feed screw, 89... Linear guide, 91... Linear base, 92... Counter shaft, 93... Binion, 94... Rack, 95... X direction moving means, 96... X base plate, 97... X direction motor, 98... X direction feed screw, 99... Linear kite, 101... Camera block, 102... Y direction origin sensor, 103...
Y direction sensor plate, 106...X direction origin sensor, 107...X direction sensor plate, 108.
... Limit sensor, 109 ... Deceleration sensor, 110 ... Alignment mechanism, 111 ... Upper table, 1
12... Lower table, 113... Table joint, 116... Support means, 117... Free ball, 118... Connection means, 119... Free hole, 121... Slide base plate, 122...
Slide base plate, 123...lock bolt,
124... Slide metal, 125... X direction sliding means, 126... Table shaft, 127... Table-hole screw, 12
8... Bush shaft, 129... Table slide block, 131... Table link, 132...
... Table adjustment unit, 133 ... Adjustment pin, 135 ... Y direction sliding means, 136 ... Alignment motor, 137 ... Linear guide, 138 ... Motor slide base, 141 ... Sensor plate , 14
2... Origin sensor, 143... Extreme position sensor, 150... Transport device, 151... Kite rail,
152... Travel guide, 153... Conveyance motor, 1
54... Conveyance belt, 156... Magnet plate, 157... Magnet, 158... Damper,
165... Carrying table, 166... Lifting means, 1
67... Cylinder base plate, 168... Lifting clamp, 169... Lifting guide, 171... Suction means, 172... Suction port, 173... Suction pipe,
176... Clamping means, 177... Linear base plate, 178... Linear guide, 181... Slide base plate, 182... Base rack, 1
83... Lock rack, 184... Lock clamp, 185... Slide clamp, 186... Clamp base plate, 187... Clamp cylinder, 1
88... Vertical sliding kite, 189... Clamp plate, 191... Clamp long hole, 192... Sensor plate, 193... Sensor, 195... Carrying out table, 196... Traveling kite,
201...Joint means, 202...Lower plate, 203...Slide base plate, 204...
...Cylinder mount block, 205...Joint cylinder, 206...Joint block, 207
... joint shaft, 208 ... linear guide, 209 ... shaft block, 211 ... urethane bread bar, 212 ... damper, 213 ... air pipe, 214 ... lifting cylinder, 216 ...・Lifting means, 217... Cylinder base plate, 218・
...Slide kite, 219...Slide shaft,
220... Work lift mechanism, 221... Work lift, 222... Lift cylinder, 223... First
Lift plate, 224...Base block, 225
. . . Lift shaft, 226 . . . Second lift plate, 230 . , 235...
Drive pulley, 236... Discharge belt, 237...
- Discharge motor, 240... Printing device, 241... Printing frame, 242... Screen printing plate, 243...
・Printing stage, 244...stage level bolt,
245... Suction means, 246... Suction hole, 247...
... Suction pipe, 248 ... Valve, 251 ... Squeegee unit, 252 ... Carriage block, 2
53... Squeegee pipe, 254... Squeegee, 2
55...Doctor pipe, 256...Doctor, 2
57...bias @11! , 258... Office computer mechanism 6 Fig. 9 Fig. 10 hehe

Claims (1)

[Claims] 1. After the input work is positioned and stopped by a preliminary alignment device, it is aligned to the printing position by the alignment device, and then sent to the printing device by the loading table of the conveyance device, and after printing is completed. In a fully automatic screen printing machine that transports the workpiece to the discharge device using the transporting device's unloading table, the preliminary alignment device temporarily stops the front, rear, left, and right edges of the workpiece placed on the alignment stage, and positions the front, rear, left, and right portions of the workpiece. The alignment device has a mechanism that uses a camera to project multiple alignment marks formed at predetermined positions on the workpiece onto a monitor television screen to detect positional deviations in relation to a predetermined printing position. It is equipped with a position detection mechanism and an alignment mechanism that moves and adjusts the alignment stage in each direction to correct this positional deviation. The machine moves back and forth between the loading table, which has a suction device that attracts the workpiece, and a clamping device that clamps it from the front and back in the transport direction, the printing device, and the ejecting device, and lifts it onto the printing stage after printing is completed. A fully automatic screen printing machine characterized by comprising a carry-out table which travels backwards below the workpiece, rises to lift the workpiece, and carries it forward. 2. The alignment stage of the aligning device and the printing stage of the printing device are divided into left and right parts along the workpiece conveyance direction, and the loading table and unloading table of the conveying device move forward and backward within the respective central gaps. 2. A fully automatic screen printing machine according to claim 1. 3. The fully automatic screen printing machine according to claim 1 or 2, wherein the alignment device includes a loading device for loading the workpieces and a preliminary alignment device. 4. The camera of the position detection mechanism in the aligning device uses the camera adjustment mechanism to move the X-direction motor of the X-direction moving means and the Y-direction moving means along the X direction along the transport direction of the workpiece and the Y direction almost perpendicular to the transport direction. The movement is controlled by the Y direction motor, and the movement amount for the movement control is:
4. The fully automatic screen printing machine according to claim 1, wherein the step pulse number in each motor is calculated and measured and set as a parameter. 5. The alignment mechanism of the alignment device supports an upper table that supports the alignment stage so that it can freely slide on a lower table that does not move, and moves the upper table back and forth in the X direction along the workpiece conveyance direction. A direction slide means and a Y direction slide means for advancing and retracting the upper table in the Y direction substantially perpendicular to the conveyance direction are disposed on the lower table, and the tips of the respective slide means are linked to the upper table,
5. A fully automatic screen printing machine according to claim 1, wherein each of these sliding means is driven by a separate alignment motor that extends and retracts in each direction. 6. The printing stage of the printing device is equipped with a work lift mechanism that lifts up the rear end of the work in the transport direction after printing is completed, and this work lift mechanism swings in the vertical direction using the front end of the work in the transport direction as a fulcrum. 6. The fully automatic apparatus according to claim 1, wherein the workpiece lift is supported by a workpiece lift, and the workpiece lift is oscillated into and out of the printing stage surface by the operation of a lift cylinder disposed on the backside of the printing stage. screen printing machine.