JP2011073350A - Substrate support device and screen printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid a printing delay in a printer by minimizing time required for maintenance such as replacement of a support pin. <P>SOLUTION: A support block 51 for supporting a plurality of support pins 52 is formed with support holes 53 for every support pin. The upper part of each support hole 53 is freely detachably provided with a pin guide 43 having an outer diameter larger than the outer diameter of a sliding part 64 formed at the lower part of the support pin and sliding in the support hole, the pin guide 43 being formed with a guide hole 47 for guiding the support pin at the center. When the support pin 52 is replaced, the pin guide 43 is removed to easily remove the support pin 52, and after the replacement, the pin guide 43 is mounted. Maintenance can thereby be easily performed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a substrate support device having a plurality of support pins for supporting a printed circuit board, and a screen printer for applying a coating agent on a screen onto a printed circuit board supported by the support pins of the substrate support device.

  This type of screen printing machine is disclosed in, for example, Patent Document 1 and the like, and a θ-axis base arranged substantially horizontally and a center of the θ-axis base so that the θ-axis base rotates in a substantially horizontal plane. A bearing that rotatably supports the shaft, a plurality of θ-axis base support mechanisms that support the slidable edges of the lower surface of the θ-axis base, and a substrate support mechanism that is provided on the θ-axis base The backup mechanism (substrate support device) positioned above the support mechanism is composed of a plate and a plurality of pins mounted in any one of holes formed in the plate.

  In the backup mechanism described above, it is necessary to change the position of the pin for each type of substrate to be printed. For example, when an operator performs an insertion / removal operation of the pin with respect to the plate, there is a problem that the operation becomes complicated. In particular, when the number of pins to be worked is large, the work becomes more complicated, and the time required for the work becomes longer, resulting in a problem that the printing operation by the printing press is delayed.

  For example, Patent Document 2 discloses a mechanism for setting a receiving pin that is a support pin for solving the above-described problem of pin insertion / removal work by an operator or work time. In this setting mechanism, prints are made by two-dimensionally arranging lower receiving pins, which are accommodated in a through hole formed in the lower receiving plate so as to move up and down and are urged downward by a spring in the XY directions at predetermined intervals. Substrate receiving means, and selecting means arranged in the X direction, which are driven based on the control signal and raise the receiving pins by the supply of air to protrude.

Further, the setting mechanism is provided between the printed circuit board receiving means and the selecting means, and all setting plates having through holes formed so that the receiving pins and the selecting pins can come into contact with each other are arranged in a line in the X direction. A plurality of setting means arranged in the Y direction so as to correspond to the driving means, a driving means for collectively driving the receiving means and the setting means at predetermined intervals in the Y direction, and a setting plate driving means for driving the setting plate in the X direction. And setting the protrusion and non-protrusion of the receiving pin.
JP 2000-211108 A JP-A-5-335800

  However, in the mechanism for setting the receiving pins of the printed circuit board described in Patent Document 2, maintenance work for the receiving pins or the selection pins, that is, for example, replacement work for bent bent receiving pins themselves is not limited. An exchanging operation of a spring provided on the receiving pin or an exchanging operation of a sealing member provided on the selection pin to prevent air leakage occurs. In order to perform these replacement operations, it is necessary to remove the respective pins. For the removal operation, it is necessary to remove the receiving means, the selection means, and the setting means, which are very complicated. Further, it is necessary to remove the driving means, which causes a problem that the operation becomes more complicated and the time required for the operation becomes longer. In addition, after the replacement work is completed, it is necessary to attach the receiving means, the selection means, the setting means, and the drive means. The time required for this work is increased, the time required for the maintenance work is increased, and the printing is performed. There is also a problem that the start of printing on the machine is delayed.

  Therefore, an object of the present invention is to reduce the time required for maintenance work such as replacement work of support pins (underpins) by an operator as much as possible and to avoid printing delay of a printing press.

Therefore, the first invention is
In a substrate support device comprising a plurality of support pins for supporting a printed circuit board,
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for elevating and lowering the support pins;
A base provided on a support block, the support block is relatively movable in the horizontal direction, and supports the support pin in a raised state from below;
A pushing device that is movable in a horizontal direction and a vertical direction, and that lowers and pushes the desired support pin into the support hole;
A pin guide having an outer diameter formed in a lower portion of the support pin and a guide hole that guides the support pin in the center is larger than an outer diameter of a slide portion that slides in the support hole. Is detachably provided.

The second invention is
In a substrate support device comprising a plurality of support pins for supporting a printed circuit board,
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for elevating a plurality of the support pins;
Provided on the support block, the support pin is moved by the movement of the support block, and a base that supports the support portion of the support pin in the raised state from below, and is movable in the horizontal direction and the vertical direction, and is lowered And a pushing device for pushing the desired support pin into the support hole,
An upper hole having an inner diameter that is formed at a lower portion of the support pin and that is larger than an outer diameter of a slide portion that slides in the support hole is formed in the upper hole, and the slide of the support pin is formed in the upper hole. A pin guide having a guide hole formed in the center for guiding an intermediate portion formed above the portion is detachably provided.

The third invention is
In a substrate support device comprising a plurality of support pins for supporting a printed circuit board,
A plurality of support holes, which are slidable in a horizontal direction, are formed in a vertical direction with a space therebetween, and the support holes are an upper hole formed in an upper part of the support block and the upper hole. A lower hole having a lower cross-sectional area than the upper hole, and a support block having an air supply path communicating with the upper and lower parts of the lower hole,
A space is formed between the slide part provided at the lower part and slides up and down in the lower hole and the side wall of the lower hole formed on the slide part and having a smaller cross-sectional area than the slide part and rising. A lower intermediate portion that slides and fits in the upper hole, and is formed on the lower intermediate portion, a central portion having a cross-sectional area smaller than the lower intermediate portion, and a lower intermediate portion formed on the central portion, A support pin comprising an upper intermediate portion having the same cross-sectional shape, and an extending portion formed on the upper intermediate portion and having a smaller cross-sectional area than the upper intermediate portion;
The upper intermediate portion is provided on the support block, is formed corresponding to the support pin, and is formed continuously from the lift portion corresponding to the upper intermediate portion, and the support pin is raised. A base formed with a plurality of through holes provided with a support portion supporting the lower end;
A pressing head that is movable in a horizontal direction and a vertical direction, and that descends and pushes the support pin into the support hole;
The upper hole is detachably provided with a pin guide in which a guide hole for guiding the lower intermediate portion and the upper intermediate portion is formed in the center with an outer diameter larger than the outer diameter of the slide portion. .

The fourth invention is:
In a screen printing machine comprising a plurality of support pins for supporting a printed circuit board and a screen in which pattern holes are formed, and applying the coating agent on the screen onto the printed circuit board through the pattern holes.
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for elevating and lowering the support pins;
A base provided on the support block, the support block is relatively movable in the horizontal direction, and supports the support pin in a raised state from below;
A substrate support device including a pushing device that is movable in a horizontal direction and a vertical direction, and that is lowered and pushes the desired support pin into the support hole;
A guide hole that is removable at the upper part of the support hole and that has an outer diameter that is formed at the lower part of the support pin and that is larger than the outer diameter of a slide part that slides in the support hole and guides the support pin to the center. It is characterized by comprising a formed pin guide.

The fifth invention is:
A screen printing machine comprising a plurality of support pins for supporting a printed circuit board, a screen in which pattern holes are formed, and a squeegee for applying the coating agent on the screen onto the printed circuit board through the pattern holes by moving. In
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for simultaneously elevating a plurality of the support pins;
A base that is provided on a support block, and that supports the support pin of the support pin in a state where the support pin approaches and rises due to movement of the support block;
A substrate support device including a pushing device that is movable in a horizontal direction and a vertical direction, and that is lowered and pushes the desired support pin into the support hole;
An upper hole having an inner diameter that is formed at a lower portion of the support pin and that is larger than an outer diameter of a slide portion that slides in the support hole is formed in the upper hole, and the slide of the support pin is formed in the upper hole. A pin guide having a guide hole formed in the center for guiding an intermediate portion formed above the portion is detachably provided.

  According to a sixth aspect of the present invention, in the substrate support device or the screen printing machine according to any one of the first to fifth aspects, the upper surface of the pin guide corresponds to a plurality of locking pieces formed on the pin guide attaching / detaching jig. And an insertion hole is formed.

  According to a seventh aspect of the present invention, in the substrate support device or the screen printing machine according to any one of the first to fifth aspects, the slide portion is provided with a packing that contacts a side wall of the support hole, and a lower portion and an upper portion of the support hole are provided. An air supply source for supplying air to either one of the two is provided.

  The present invention can shorten the time required for maintenance such as replacement of the support pins as much as possible, and can avoid a delay in printing on the printing press.

It is a front view of a screen printing machine. It is a right view of the principal part of a screen printer. It is a partial cross section figure of a substrate support device. It is a top view of a board | substrate support apparatus. It is explanatory drawing when a support pin is removed from a board | substrate support apparatus. It is a top view of a pin guide. It is a side view of an attachment / detachment jig. It is a bottom view of an attachment / detachment jig.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of the main part of the screen printer, and FIG. 2 is a right side view of the main part of the screen printer.
As shown in FIG. 1, the screen printer 1 includes a substrate support table 12 installed on a base 11, screen support means 13 disposed above the substrate support table 12, and a substrate support table 12. Above the screen support means 13, a first image pickup means 14 for picking up an image of the substrate recognition mark KM placed at a diagonal position on the printed circuit board P arranged between the screen support means 13 and supported by the substrate support table 12. A second image pickup means 15 for picking up a screen recognition mark attached to the screen S arranged and supported by the screen support means 13; a pair of print heads 16A and 16B (see FIG. 2) arranged above the screen S; , A supply conveyor 17 for supplying the substrate P onto the substrate support table 12, and a discharge for discharging the substrate P from the substrate support table 12. A conveyor 18, and a later monitor 47 (not shown) to project an image captured by the first and second imaging means 14, 15.
The substrate support table 12 has a first moving mechanism 21 for moving in the X-axis direction (see FIG. 2) extending in the horizontal direction, and a rotation provided on the first moving mechanism 21 for rotating in a horizontal plane. A mechanism 22, a second moving mechanism 23 provided on the rotating mechanism 22 for moving in the direction of the Z-axis extending in the vertical direction, and a second moving mechanism (hereinafter referred to as a block base) 23 are provided. A substrate support device 24 provided with a plurality of support pins to be described later and a block for supporting these support pins, and a transport mechanism (not shown) provided on the upper surface of the substrate support device 24 for transporting the substrate P in the X-axis direction. ).
The screen support means 13 includes a screen support frame 25 that supports the peripheral edge of the lower surface of the screen S, cylinders 26 and 26 that are disposed above the screen support frame 25 and press the screen S against the screen support frame 25, and horizontal And a moving mechanism 27 for moving in the direction of the Y axis extending in the direction.
The first imaging means 14 includes a substrate recognition camera 28, a moving mechanism 29 that moves the substrate recognition camera 28 in the X-axis and Y-axis directions, and an illumination device that irradiates light onto the substrate P on the substrate support table 12 ( (Not shown). The second imaging means 15 includes a screen recognition camera 31, a moving mechanism 32 that moves the camera 31 in the X-axis direction, and an illumination device (not shown) that irradiates the substrate P on the substrate support table 12 with light. The camera 31 is moved in the Y-axis direction by the moving mechanism 34 of the print heads 16A and 16B.

As shown in FIG. 2, the print heads 16A and 16B are arranged at intervals in the Y-axis direction, and squeegees 33A and 33B are attached to the lower end portions, respectively, and are simultaneously moved in the Y-axis direction by the moving mechanism 34. While moving, the vertical movement mechanisms 35A and 35B individually move in the Z-axis direction. When the print heads 16A and 16B move to the left in FIG. 2, the right print head 16A descends and the squeegee 33A slides on the screen S and moves to the right in FIG. The left print head 16B descends and the squeegee 33B slides on the screen S. Therefore, two printing processes are performed by one reciprocating movement of the print heads 16A and 16B.
Hereinafter, the substrate support device 24 described above will be described in detail with reference to FIGS. 3, 4, and 5.

  Reference numeral 51 denotes a support block. The support block 51 has a plurality of circular support holes 53 each supporting a circular support pin 52 (52a, 52b, 52c, 52d) each having a circular cross section (see FIG. 1 and 2 in the X direction), a plurality of rows (Y direction in FIG. 2), and the vertical direction. Each support hole 53 includes an upper hole 54 formed in the upper part of the support block 51 and a lower hole 55 formed under the upper hole 54 and having a diameter smaller than that of the upper hole 54 and having a smaller cross-sectional area. The support block 51 communicates with an upper air supply path 56 and a lower air supply path 57 that communicate the upper and lower portions of the lower hole 55 for each row. The upper air supply path 56 and the lower air supply path 57 communicate with the upper suction path 58 and the lower suction path 59, respectively. The air inlets of the upper suction path 58 and the lower suction path 59 are formed on the side surface of the support block 51 with the support holes 53. It is connected to electromagnetic valves 60a to 60g such as, for example, a center open 5-port electromagnetic valve, which are mounted side by side in each row.

  The upper hole 54 includes a lower threaded portion 41 and an upper insertion portion 42 in which a step is formed between the threaded portion 41 and a diameter slightly larger than the threaded portion 41. . The pin guide 43 is detachably inserted into the upper hole 54 from above. The pin guide 43 is formed to correspond to the screwing portion 41 and the insertion portion 42 of the upper hole 54, and a lower screwing portion 44 that is screwed to the screwing portion 41 is formed at the lower portion. Further, the pin guide 43 is formed with an operation portion 45 having a diameter slightly larger than that of the lower screwing portion 44 at an upper portion thereof, and a pin guide attaching / detaching jig, which will be described later, when the pin guide 43 is attached / detached. A plurality of insertion holes 46 into which at least a pair of locking pieces are inserted are formed (see FIG. 6). Furthermore, a guide hole 47 that slides up and down while guiding a constricted portion 65 (to be described later) of the support pin 52 is formed in the center of the pin guide 43.

  Further, a plurality of linear guides 23a are provided between the support block 51 and the block base 23, and the support block 51 is supported on the block base 23 so as to be slidable in the horizontal direction (X direction in FIG. 3). ing. A connection hole 61 is formed in the block base 23 in the vicinity of the electromagnetic valves 60 a to 60 g, and an air supply pipe 62 connected to an air supply source (not shown) is connected to a lower hole of the connection hole 61. Each solenoid valve 60a-60g is connected to the hole by piping.

  A drive cylinder 63 for moving the support block in the X direction (the arrow direction in FIG. 4) is provided on the block base 23, and the rod 63a of the drive cylinder 63 is provided on the support block 51 opposite to the electromagnetic valves 60a to 60g. Connected to the side.

  Hereinafter, the support pin 52 will be described in detail. The support pin 52 has a circular cross section, and a slide portion 64 that has the largest diameter and slides up and down in the lower hole 55 is formed in the lower portion of the support pin 52. A projecting portion 64 a having a diameter smaller than that of the slide portion 64 is formed below the slide portion 64, and a constricted portion 65 that is a pin body having a diameter smaller than that of the slide portion 64 is formed on the slide portion 64. The constricted portion 65 has a diameter slightly smaller than the diameter of the upper hole 54, and is formed on the lower intermediate portion 66 that fits in the upper hole 54 as the support pin 52 rises. A central portion (constriction) 67 smaller than the intermediate portion 66 and an upper intermediate portion 68 formed on the central portion 67 and having the same cross-sectional shape as the lower intermediate portion 66 are provided. A space 70 is formed between the constricted portion 65 and the side wall of the lower hole 55 with the support pin 52 lowered.

  Further, an extended portion 71 is formed on the constricted portion 65, extending further upward and having a diameter equal to that of the central portion 67 and having a cross-sectional area smaller than that of the upper intermediate portion 68. An upper end portion 72 having a diameter larger than that of the existing portion 71 is formed.

  The slide portion 64, the constricted portion 65, the extending portion 71, and the upper end portion 72 are integrally formed, for example, and a groove 75 is formed on the outer peripheral side surface of the slide portion 64, and a packing 76 is attached to the groove 75. It has been. The packing 76 is an X-ring or O-ring having an X-shaped cross-section, for example, or a U-ring having a U-shaped cross-section, for example. Further, by using an X ring for the packing 76, the sealing performance at the slide portion 64 can be improved. In particular, the sealing performance can be improved when the support pin slides upward or downward. Can do. Further, when a U-shaped U-ring whose cross section is opened downward is used for the packing 76, the resistance when the slide portion 64, that is, the support pin 52 is moved upward is smaller than the resistance when the slide pin 64 is moved downward. It is possible to shorten the movement time when moving the plurality of support pins 52 simultaneously upward.

  A support pin base 81 is provided on the support block 51 with a space from the support block 51. A plurality of rows, a plurality of columns, and through holes 82 are formed corresponding to the support pins 52. . Each through-hole 82 has a darling cross section, and has an up-and-down part 83 that has a large diameter and that can move the upper intermediate part 68 up and down, and an upper intermediate part 68 that is formed continuously from the up-and-down part 83 and the support pin 52 is raised. The support part 84 with a small diameter which supports the lower end of the is provided. In FIG. 4, the description of all the through holes is omitted.

  Further, a sheet 85 for preventing dust is provided above the support pin base 81, and a plurality of holes 86 are formed in the sheet 85 corresponding to the support pins 52. The sheet 85 is connected to the support block 51 by a connection mechanism (not shown), and moves simultaneously with the support block 51 as the support block 51 moves. The sheet 85 may be attached to the main body of the screen printing machine without being connected to the support block 51. In this case, when the support pin 52 moves, the hole 86 and the support pin 52 are kept closed. A closing mechanism, for example, a bellows mechanism.

  Further, as shown in FIG. 3, a pushing device that can move in the XY direction, for example, the horizontal direction, is provided above the support block 51. For example, a pushing head 87 that is a cylinder is provided. A rod 88 is provided that is movable downward and pushes the support pin 52 that is lowered and is preset into the support hole 53.

  Hereinafter, the operation when setting each support pin 52 corresponding to the substrate to be printed will be described with reference to FIGS. In FIG. 3, in order to distinguish the illustrated support pins, 52a, 52b, 52c and 52d are sequentially formed from the support pin illustrated on the leftmost side, and in FIGS. The same reference numerals are assigned and detailed description thereof is omitted.

  First, in an initial state before the setting of substrate support by each support pin is started, each support pin 52 is in the lowered position as the pin 52 d in FIG. 3, and the slide portion 64 is positioned below the lower hole 55. The projecting portion 64 a contacts the bottom of the lower hole 55, and the constricted portion 65 is located in the lower hole 55 except for the upper portion of the upper intermediate portion 68, and a space 70 is formed between the support pin 552 d and the side wall of the lower hole 55. Is formed. The upper portion of the intermediate portion 68 is located in the insertion 47 hole. The through hole 82 is located above the insertion hole 47, the extending part 71 passes through the through hole 82, and the upper end part 72 is located in the hole 86 of the sheet 85. In such an initial state, when a control device such as a CPU (not shown) outputs one open signal to the electromagnetic valves 60a to 60g, the electromagnetic valves 60a to 60g operate. Then, as indicated by an arrow through the electromagnetic valve 60a, for example, air is sent from the air supply source to the lower air supply path 57 in the corresponding row, and pressure is applied to the slide portion 64 from below, so that the support pin 52d. Will rise. The other support pins are also raised in the same manner.

  As a result, as shown by the support pins 52a and 52b in FIG. 3, the upper surface of the slide portion 64 comes into contact with the lower surface of the pin guide 43, and the support pins 52a and 52b stop at the most elevated position. At this time, the lower intermediate portion 66 is almost accommodated in the guide hole 47, the support pins 52 a and 52 b are supported by the upper portion of the support block 51 through the pin guide 43, and the central portion 67 corresponds to the through hole 82. In position. And the air leakage in the support hole 53 is prevented by the packing 76 of the slide part 64 of each support pin 52a, 52b, and even if supply of the air from the lower air supply path 57 stops, the packing 76 and the support hole Each of the support pins 52a and 52b is maintained in the raised position by friction with the side wall 53 (see FIG. 3).

  Furthermore, as described above, the cross-sectional shape of the packing 76 is a U shape opened downward, and the resistance when the slide portion 64 moves downward is larger than the resistance when the slide portion 64 moves upward. The air pressure when raising 52b can be reduced as much as possible, and the support pins 52a and 52b can be more reliably maintained in the raised state.

  Next, the supply of air from the lower air supply path 57 is stopped, and as shown above the support pin 52b in FIG. 3, it moves above the support pin 52b that does not need to support a preset printed circuit board. The rod 88 of the pushing head 87 that has been moved down.

  As a result, when the rod 88 is lowered as indicated by a broken line, the lower end thereof comes into contact with the upper end portion 72 of the support pin 52b, and the support pin 52b is lowered to support the support block 51 like the support pin 52d shown in FIG. And pushed into the support pin base 81. Thereafter, the pushing head 87 moves above other support pins that are not required to be supported, and similarly pushes the support pins that are not required to be supported into the support block 51 and the support pin base 81. When the support pin is pushed in, the lower air supply path 57 is opened to the atmosphere via a solenoid valve, and when the support pin is pushed in, the air in the lower hole 55 is pushed out and the support pin can be pushed in smoothly. it can.

  When all the support pins that are not required to be pushed in are pushed, the rod 88 is raised and maintained in this state as indicated by an arrow 90 in FIG. 3, and the push head 87 moves in the horizontal direction to move the substrate support device. Retreat from above 24. Further, the support pins used for supporting the printed circuit board are maintained in the raised state as shown by the support pins 52a. Next, the drive cylinder 63 operates to extend the rod 63a, and the support block 51 gradually moves rightward in FIG. Along with this movement, the central portion 67 of the support pin 52 a, that is, the central portion 67 of the support pin used for supporting the printed circuit board moves from the lifting / lowering portion 83 of the through hole 82 to the support portion 84. Further, for example, the extended portion of the support pin 52 d that is not used is also moved from the lift portion 83 to the support portion 84.

  As described above, the support pin 52a to be used and the support pin 52d not to be used have a small diameter corresponding to the support portion 84 when the support pin 52a is raised or when the support pin 52d is lowered. Since the central portion 67 and the extending portion 71 are formed, the central portion 67 and the extending portion of each support pin are moved by the movement of the support block 51 in any state where each support pin is raised or lowered. The existing portion 71 can be moved from the lift portion 83 to the support portion 84.

  When the movement of the support block 51 and the seat 85 is completed, the electromagnetic valves 60a to 60g are then operated, and the air flows upward from the air supply source through the electromagnetic valves 60a to 60g as indicated by the arrow 93 in FIG. It flows to the air supply path 56. For this reason, the support pin 52a, which is a support pin used due to the pressure of air, is slightly lowered almost simultaneously, and the lower end of the upper intermediate portion 68 is the support portion of the support base 81 as in the support pin 52c shown in FIG. It abuts on the peripheral upper surface of 84 and is supported at that position. At this time, the center portion 67 of the support pin used such as the support pin 52 a may be fitted into the support portion 84.

  As shown in the support pin 52c, the lower end of the upper intermediate portion 68 abuts on the peripheral upper surface of the support portion 84 of the support base 81 and is supported at that position, so that the use pin including the support pin 52a is used. The supporting pins are positioned at the same height by the supporting base 81 at the same time. The unused support pins are slightly lowered, and the protrusions 64a are in contact with and supported by the bottom surface of the lower hole 55 like the support pins 52d.

  In this way, when the support pins 52a to be used are set at the support position of the printed circuit board, that is, when positioning, the support pins are positioned by being lifted or lowered all at once using the driving means. Time required for setting is reduced.

  Moreover, the setting of the support pin mentioned above is performed similarly about each support pin for every line corresponding to each electromagnetic valve 60b-60g. Of the support pins in each row, the support pins used for supporting the printed circuit board are positioned and set.

  As a result, when the support pins to be used such as the support pins 52a are set at the support position of the printed circuit board, the necessary support pins can be set without the operator performing work.

  Thereafter, the printing operation to the printed circuit board is performed as described above in a state where the support pins 52a used for supporting the printed circuit board and the unused support pins are positioned.

  For example, when printing on a plurality of printed boards is completed and the printing operation is finished, a setup change is performed in which support pins are set corresponding to the printed boards to be printed next.

  At the time of this setup change, first, the drive cylinder 63 operates to retract the rod 63a, and the support block 51 gradually moves in the left direction in FIG. With this movement, all the support pins such as the support pin 52a are positioned in the through hole 82. Thereafter, as indicated by an arrow 94, air flows from the lower suction path 59 to the lower air supply path 57 via the electromagnetic valves 60a to 60g. As a result, all of the support pins rise as well as the support pins 52a.

  As a result, as shown by the support pins 52 a and 52 b in FIG. 3, the central portion 67 of all the support pins moves to a position corresponding to the lifting portion 83 of the through hole 82. Thereafter, the support pin to be used is set in the same manner as the above-described support pin setting.

  Further, based on the size of the printed circuit board to be printed, the electromagnetic valves 60a to 60g that are controlled to open and close are controlled, and the electromagnetic valve unrelated to the printed circuit board to be supported can be prevented from operating. It is possible to avoid wasteful supply to the support block 51 or wasteful lifting of the support pins.

  As described above, a setup change or the like for setting a support pin corresponding to a printed circuit board is performed, and a printing operation is performed by the screen printer 1, but when the operation of the screen printer is stopped and the support pin is cleaned. The operation of removing the support pin occurs, an unexpected load is applied to the support pin 52a during the operation of the screen printing machine, or the operator touches the protruding support pin when it is stopped. When the support pin 52a is bent due to the cause, an operation of replacing the support pin 52a occurs, that is, it is necessary to perform a maintenance operation of the support pin.

  Hereinafter, the replacement work including the work of removing the support pins 52a will be described in detail.

  First, the operator removes the sheet 85 from the support block 51 with respect to the screen printing machine 1 that has stopped the printing operation. Further, the support pin base 81 is removed. The sheet 85 and the support pin base 81 are not connected to a slide mechanism such as a drive cylinder like the lower support block 51, the sheet 85 is attached to the support block, and the support pin base 81 is the main body of the screen printing machine 1. For example, since it is only screwed in a plurality of places, it can be easily removed.

  Next, the worker performs the work of removing the pin guide 43 provided at the position of the support pin 52a using the pin guide attaching / detaching jig 36. Hereinafter, the pin guide attaching / detaching jig (hereinafter referred to as attaching / detaching jig) 36 will be described with reference to FIGS. 7 and 8.

  The attachment / detachment jig 36 is a rotation that is inserted into two opposing rotation pin insertion holes 38 among a cylindrical jig main body 37 and four rotation pin insertion holes 38 formed at equal intervals on the upper portion of the jig main body 37. It consists of pins 39. And the locking piece 40 which protruded below is formed in the lower end of the jig | tool main body 37 facing two places. The interval between the locking pieces 40 is substantially equal to the interval between the insertion holes 46 of the pin guide 43, and the cross-sectional shape is approximately equal to the shape of the insertion hole 46, and the insertion hole 46 is slightly smaller.

  The operator lowers the attaching / detaching jig 37 from above the work-target pin guide 43, aligns each locking piece 40 with each insertion hole 46, and inserts it. At this time, the extension part 71 and the upper end part 72 which are the upper part of the support pin 52a protrude upward from the upper end of the pin guide 43, but the upper part of the support pin 52a is stored in the cylindrical attachment / detachment jig 37, The attachment / detachment jig 37 can be lowered. Then, the attaching / detaching jig 37 is rotated while holding the rotating pin 39, the lower screwing portion 44 is removed from the screwing portion 41, and the pin guide 43 is removed from the upper hole 54. In this way, the pin guide 43 can be easily removed using the attachment / detachment jig 37 by inserting the locking piece 40 of the attachment / detachment jig 37 into the insertion hole 46 of the pin guide 43 from above and rotating the attachment / detachment jig 37. Can do.

  Further, as described above, by removing the pin guide 43, the upper hole 53 above the lower hole 54 is opened, and the support pin 52a is easily removed through the slide part 63 into the upper hole 53 having a diameter larger than that of the slide part 64. be able to.

  When the removal work is completed, the new support pin is then lowered from above, the slide part is stored in the lower hole 54 through the upper hole 53, the pin guide 43 is inserted into the upper hole 54, and the attachment / detachment jig 37 is used again. The pin guide 43 is rotated and securely attached. Thereafter, the seat 85 and the support pin base 81 are attached, and the maintenance work is completed.

  In this way, the support pin 52a can be replaced by removing the pin guide 52 located on the support pin to be replaced or the like without removing the support block 51 and removing the pin guide 52. It can be easily performed in as short a time as possible, and after replacing the support pin, the pin guide 52 may be attached to the support block 51, and the operation can be easily performed. As a result, the screen accompanying the maintenance work The operation stop time of the printing press 1 can be shortened as much as possible.

In addition, in order to remove the support pins, when the upper portion of the support block 51 (hereinafter referred to as the upper block) is made detachable and the mechanism is detachable, the upper block is removed and the support pins are cleaned or replaced. When mounting the upper part of the support block again, if there are no pin guides, the stored many support pins are unstable, and the many support pins protruding upward and the insertion holes formed in the upper block are positioned. However, in the present invention described above, the support block 51 remains unchanged, and the pin guide 52 can be attached and detached to easily perform the operation. The work time can be shortened. In addition, when the replacement work and the like are finished and the support pin base 81 is mounted with the support pin lowered from above, the positions of the support pins are almost settled in the support block 51, so that the through holes can be easily positioned above the support pins. And can be easily attached.
Further, for example, as time passes, the sealing function of the support pin 52a by the packing 76 is lowered, and the support pin can be easily removed as described above even when replacing the packing, thereby shortening the maintenance work time. can do.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various embodiments described above without departing from the spirit of the present invention. It encompasses alternatives, modifications or variations.

DESCRIPTION OF SYMBOLS 1 Screen printer 24 Substrate support device 36 Detachment jig 40 Locking piece 43 Pin guide 51 Support block 52a-d Support pin 53 Support hole 54 Upper hole 55 Lower hole 64 Slide part 65 Constriction part 76 Packing 81 Support base 85 Sheet 87 Pushing device

Claims (7)

In a substrate support device comprising a plurality of support pins for supporting a printed circuit board,
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for elevating and lowering the support pins;
A base provided on a support block, the support block is relatively movable in the horizontal direction, and supports the support pin in a raised state from below;
A pushing device that is movable in a horizontal direction and a vertical direction, and that lowers and pushes the desired support pin into the support hole;
A pin guide having an outer diameter formed in a lower portion of the support pin and a guide hole that guides the support pin in the center is larger than an outer diameter of a slide portion that slides in the support hole. A substrate support device characterized in that it is detachably provided. In a substrate support device comprising a plurality of support pins for supporting a printed circuit board,
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for elevating a plurality of the support pins;
Provided on the support block, the support pin is moved by the movement of the support block, and a base that supports the support portion of the support pin in the raised state from below, and is movable in the horizontal direction and the vertical direction, and is lowered And a pushing device for pushing the desired support pin into the support hole,
An upper hole having an inner diameter that is formed at a lower portion of the support pin and that is larger than an outer diameter of a slide portion that slides in the support hole is formed in the upper hole, and the slide of the support pin is formed in the upper hole. A substrate support apparatus comprising a pin guide detachably provided with a guide hole formed in the center for guiding an intermediate portion formed above the portion. In a substrate support device comprising a plurality of support pins for supporting a printed circuit board,
A plurality of support holes, which are slidable in a horizontal direction, are formed in a vertical direction with a space therebetween, and the support holes are an upper hole formed in an upper part of the support block and the upper hole. A lower hole having a lower cross-sectional area than the upper hole, and a support block having an air supply path communicating with the upper and lower parts of the lower hole,
A space is formed between the slide part provided at the lower part and slides up and down in the lower hole and the side wall of the lower hole formed on the slide part and having a smaller cross-sectional area than the slide part and rising. A lower intermediate portion that slides and fits in the upper hole, and is formed on the lower intermediate portion, a central portion having a cross-sectional area smaller than the lower intermediate portion, and a lower intermediate portion formed on the central portion, A support pin comprising an upper intermediate portion having the same cross-sectional shape, and an extending portion formed on the upper intermediate portion and having a smaller cross-sectional area than the upper intermediate portion;
The upper intermediate portion is provided on the support block, is formed corresponding to the support pin, and is formed continuously from the lift portion corresponding to the upper intermediate portion, and the support pin is raised. A base formed with a plurality of through holes provided with a support portion supporting the lower end;
A pressing head that is movable in a horizontal direction and a vertical direction, and that descends and pushes the support pin into the support hole;
The upper hole is detachably provided with a pin guide in which a guide hole for guiding the lower intermediate portion and the upper intermediate portion is formed in the center with an outer diameter larger than the outer diameter of the slide portion. Substrate support device. In a screen printing machine comprising a plurality of support pins for supporting a printed circuit board and a screen in which pattern holes are formed, and applying the coating agent on the screen onto the printed circuit board through the pattern holes.
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for elevating and lowering the support pins;
A base provided on the support block, the support block is relatively movable in the horizontal direction, and supports the support pin in a raised state from below;
A substrate support device including a pushing device that is movable in a horizontal direction and a vertical direction, and that is lowered and pushes the desired support pin into the support hole;
A guide hole that is removable at the upper part of the support hole and that has an outer diameter that is formed at the lower part of the support pin and that is larger than the outer diameter of a slide part that slides in the support hole and guides the support pin to the center. A screen printing machine comprising a formed pin guide. A screen printing machine comprising a plurality of support pins for supporting a printed circuit board, a screen in which pattern holes are formed, and a squeegee for applying the coating agent on the screen onto the printed circuit board through the pattern holes by moving. In
A support block in which a plurality of support holes for supporting the support pins are formed in the vertical direction with a space therebetween;
Elevating means for simultaneously elevating a plurality of the support pins;
A base that is provided on a support block, and that supports the support pin of the support pin in a state where the support pin approaches and rises due to movement of the support block;
A substrate support device including a pushing device that is movable in a horizontal direction and a vertical direction, and that is lowered and pushes the desired support pin into the support hole;
An upper hole having an inner diameter that is formed at a lower portion of the support pin and that is larger than an outer diameter of a slide portion that slides in the support hole is formed in the upper hole, and the slide of the support pin is formed in the upper hole. A screen printing machine, wherein a pin guide having a guide hole formed in the center for guiding an intermediate portion formed above the portion is detachably provided.   6. The substrate support apparatus according to claim 1, wherein an insertion hole is formed on an upper surface of the pin guide so as to correspond to a plurality of locking pieces formed on the pin guide attaching / detaching jig. Or screen printer.   The said slide part is provided with packing which contacts the side wall of the said support hole, and was provided with the air supply source which supplies air to either the lower part of the said support hole, or upper part. 5. The substrate support apparatus or screen printer according to 5.

Images