JP2009076617A - Substrate conveying device of electronic component mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate conveying device of an electronic component mounting device serving to confirm the position of a guide rail and to confirm the position of a press plate using one position confirmation mark. <P>SOLUTION: The substrate conveying device of the electronic component mounting device is provided with an imaging means 21 of imaging the position confirmation mark 47 comprising a circular portion 48 provided with a reference mark 49 at its center portion through a through hole 51 bored in the press plate 43 to nearly the same diameter as the circular portion of the position confirmation mark while the position confirmation mark 47 is provided on top surfaces of guide rails 64a and 64b and the through hole 51 is formed matching the circular portion when the press plate is positioned at a substrate clamp position, and further provided with a guide rail position confirmation means 95 of confirming the positions of the guide rails based upon image processing on the reference mark of the position confirmation mark imaged by the imaging means, and a press plate position confirmation means 96 of confirming the position of the press plate based upon image processing on the circular portion of the position confirmation mark imaged by the imaging means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a board conveying device in an electronic component mounting apparatus in which a position confirmation mark is provided on a guide rail whose position can be adjusted according to the width of a printed board.

  A board transport device that transports printed circuit boards on which electronic components are to be mounted along a guide rail by a belt conveyor, lifts the printed circuit board at a predetermined position, and positions and clamps the printed circuit board at the component mounting position. For example, Patent Document 1 discloses a module type electronic component mounting apparatus in which a plurality of printed circuit boards can be taken out from above guide rails for maintenance or the like.

  In this type of electronic component mounting apparatus, a holding plate on which the printed board is pressed by the positioning clamp is provided so as to be slidable in a direction perpendicular to the conveyance direction of the printed board with respect to the guide rail, and the holding plate protrudes to the printed board side. It is possible to move horizontally between the substrate clamp position to be retracted and the retracted position to retract from the printed circuit board. Then, after completion of maintenance, etc., confirmation means for confirming whether the holding plate is in the substrate clamping position or the retracted position in order to check that the holding plate has been returned to the original position (substrate clamping position). (Opening / closing switch 37, proximity switch 47, or confirmation mark M imaged by the substrate mark imaging camera).

By the way, in many of this kind of electronic component mounting apparatuses, as described in Patent Document 2, for example, the conveyance width of the board conveyance device can be changed according to the width of the printed board. In other words, the pair of guide rails for transporting the printed circuit board is composed of a fixed guide rail and a movable guide rail that can be moved toward and away from the fixed guide rail, and the position of the movable guide rail can be adjusted according to the width of the printed circuit board. I am doing so.
Japanese Patent Laying-Open No. 2006-73864 (paragraph numbers 0028 and 0037, FIGS. 3 and 12) Japanese Patent Laying-Open No. 2004-31613 (paragraph number 0039, FIG. 2)

  In the electronic component mounting apparatus with variable conveyance width described in Patent Document 2, a pair of guide rails is usually provided with a reference mark for confirming the position of the guide rail, and the reference mark is provided on the printed circuit board. An image is captured using a board mark imaging camera that images the reference mark, and it is confirmed whether the distance between the movable guide rail with respect to the fixed guide rail, that is, the board conveyance width matches the printed board width.

  On the other hand, as described in Patent Document 1, an electronic component mounting apparatus in which a holding plate can be slid between a board clamp position and a retracted position with respect to a guide rail so that a printed board can be taken out from above. In order to confirm whether or not the restraining plate has been returned to the original position (substrate clamp position) after completion of maintenance or the like, it is necessary to provide confirmation means such as a confirmation mark on the restraining plate as described above.

  Therefore, in an electronic component mounting apparatus with a variable board conveyance width and a structure that moves the holding plate for maintenance, etc., the position of the guide rail and the holding plate is checked using the board mark imaging camera. When trying to do so, it is necessary to provide fiducial marks at predetermined positions on the guide rail and the holding plate. Therefore, it is necessary to position the board mark imaging camera at the position where the reference mark of the guide rail is imaged and the position where the reference mark of the holding plate is imaged, and the calculation processing for position confirmation becomes complicated was there.

  The present invention has been made in view of such conventional problems, and an electronic component mounting apparatus that can be used for both confirmation of the position of the guide rail and confirmation of the position of the holding plate using a single position confirmation mark. An object of the present invention is to provide a substrate transfer apparatus.

  In order to solve the above-described problem, the structural feature of the invention according to claim 1 is that the board conveyance width is such that at least one of the pair of guide rails that guides the printed board on which the electronic component is mounted is movable. And a holding plate attached to the guide rail can be moved between a board clamp position and a retracted position with respect to the guide rail so that the printed board can be taken out from above. A position confirmation mark comprising a circular portion having a reference mark at the center on the upper surface of the guide rail, and a through hole having substantially the same diameter as the circular portion of the position confirmation mark is provided on the restraining plate. Is formed so as to match the circular portion when positioned at the substrate clamp position, and the position confirmation mark is imaged through the through hole of the holding plate. An image means is provided, and a guide rail position confirmation means for confirming the position of the guide rail based on image processing of the reference mark of the position confirmation mark imaged by the imaging means, and the position imaged by the imaging means A presser plate position check means for checking the position of the presser plate based on image processing of the circular portion of the check mark is provided.

  The structural feature of the invention according to claim 2 is that, in claim 1, the restraint plate position confirmation means is configured to perform the restraint based on the roundness of the circular portion of the position confirmation mark imaged by the imaging means. The position of the board is confirmed.

  According to a third aspect of the present invention, there is provided a structural feature of the first aspect of the present invention, in the first aspect, based on the shape of the circular portion and the reference mark of the position confirmation mark imaged by the imaging unit, A foreign object is detected and a warning is issued.

  According to the invention according to claim 1 configured as described above, a position confirmation mark including a circular portion having a reference mark at the center is provided on the upper surface of the guide rail, and the circular plate of the position confirmation mark is substantially provided on the holding plate. A through hole of the same diameter was formed so as to match the circular part when the holding plate was positioned at the board clamp position, so using one position check mark, the position of the guide rail and the position of the holding plate This can also be used for confirmation. Therefore, there is no need to provide separate position confirmation marks for confirming the position of the guide rail and confirming the position of the holding plate. Therefore, the two types of marks (circular portion and reference mark) described above are occupied by the area occupied by the guide rail. In addition, since it is not necessary to read separate position confirmation marks, it is possible to reduce the man-hours required for position confirmation and shorten the time required for position confirmation.

  According to the invention according to claim 2 configured as described above, the restraint plate position confirmation unit confirms the position of the restraint plate based on the roundness of the circular portion of the position confirmation mark imaged by the imaging unit. Therefore, it is possible to confirm that the restraining plate has been returned to the normal position by simple image processing.

  According to the invention according to claim 3 configured as described above, contamination and foreign matter of the position confirmation mark are detected and cleaned based on the circular shape of the position confirmation mark and the shape of the reference mark imaged by the imaging unit. A warning such as a prompt is issued so that the position confirmation mark can always be kept in a normal state free from dirt and foreign matter, and the position of the guide rail and the position of the holding plate can be confirmed accurately. be able to.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an electronic component mounting apparatus provided with a substrate transfer apparatus according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, the electronic component mounting apparatus according to the embodiment includes a component supply device 10, a board transfer device 11, and a component transfer mounting 12.

  The component supply apparatus 10 is configured by arranging a plurality of cassette type feeders 71 in parallel on a base frame 70. The feeder 71 includes a main body frame 72 that is detachably attached to the base frame 70, a supply reel 73 that can be detachably attached to the rear portion of the main body frame 72, and a component extraction portion 74 provided at the tip of the main body frame 72. Yes. An unillustrated elongate tape in which electronic components are enclosed at a predetermined pitch is wound and held on the supply reel 73, and this tape is fed out by a predetermined pitch by an unillustrated sprocket, and the electronic component is released from the encapsulated state and is taken out. The data are sequentially sent to the unit 74.

  A component camera 75 is provided between the component supply device 10 and the substrate transport device 11 as an imaging unit that detects the holding position of the electronic component held by the component transfer mounting 12. Although the component transfer device 12 is retracted backward in FIG. 1, the component transfer device 12 is moved above the component camera 75 when detecting the holding position of the electronic component.

  The substrate transport device 11 transports a printed circuit board in the X-axis direction, and is shown as a so-called double conveyor type device in which transporting means 61 and 62 are arranged in parallel. Each transport means 61, 62 has a pair of guide rails 64a, 64b arranged in parallel on the base 63, facing each other in parallel. As shown in FIG. 3, a pair of conveyor belts 66a and 66b for supporting and transporting the printed circuit board S guided by the guide rails 64a and 64b are arranged in parallel on the transport means 61 and 62, respectively. Yes.

  The component transfer device 12 is of the XY robot type, is mounted on the base frame 70, is disposed above the substrate transfer device 11 and the component supply device 10, and moves in the Y-axis direction along the guide rail 15a. A possible Y-axis slide 15 is provided. The Y-axis slide 15 is moved in the Y-axis direction by a ball screw mechanism including a ball screw 16 a connected to the output shaft of the Y-axis servomotor 16. As shown in FIG. 4, an X-axis slide 17 is guided by the Y-axis slide 15 so as to be movable in the X-axis direction orthogonal to the Y-axis direction. An X-axis servomotor 18 (see FIG. 8) is installed on the Y-axis slide 15, and the X-axis slide 17 is moved in the X-axis direction by an unillustrated ball screw mechanism connected to the output shaft of the X-axis servomotor 18. Is done.

  On the X-axis slide 17, an electronic component mounting head 20 that sucks and mounts the electronic component on the printed circuit board S, and a position confirmation mark 47 (described later) attached to the guide rails 64 a and 64 b of the substrate transport apparatus 11. A reference mark camera 21 is attached. The electronic component mounting head 20 includes a rotatable revolver head 23 having a plurality of nozzle spindles that can rotate and move up and down, and an electronic component is adsorbed to the tip of each nozzle spindle of the revolver head 23 (not shown). A suction nozzle is mounted for transport.

  As shown in FIG. 2 and FIG. 3, the substrate transport device 11 has a reference support member 31 fixed on the base 30 and a reference support member 31 along a guide rail 33 installed on the base 30. A movable support member 35 is provided that is fixed to a slider 34 that can move in the approaching and separating direction. A first guide rail 64a that extends along the transport direction and a second guide rail 64b that faces in parallel with the first guide rail 64b are mounted on the support members 31 and 35, respectively. Further, a first conveyor belt 66a extending along the transport direction and a second conveyor belt 66b facing in parallel to the first conveyor belt 66a are stretched between the support members 31 and 35, respectively.

  In addition, the substrate transport device 11 is provided with a drive device 37 that moves the movable support member 35 along the guide rail 33 in a direction orthogonal to the longitudinal direction of the guide rails 64a and 64b. The drive device 37 is installed on the support frame 38, which is rotatably supported between the support frame 38 installed on the base 30 and the reference support member 31, and rotationally drives the feed screw 39. It is comprised from the drive motor 40 which carries out. A feed nut 41 fixed to the movable support member 35 is screwed onto the feed screw 39, and the movable support member 35 is moved along the guide rail 33 by the rotation of the feed screw 39 by the drive motor 40. ing.

  As described above, the movable support member 35 is moved to a desired position orthogonal to the longitudinal direction of the guide rails 64a and 64b in accordance with the width S1 of the printed board S to be transported by the substrate transporting device 11, and the guide rails 64a and 64b are moved. The conveyance width can be changed freely.

  On the first and second guide rails 64a and 64b, holding plates 43a and 43b are provided along the longitudinal direction of the guide rails 64a and 64b, respectively, as contact members when the printed circuit board S is clamped at the component mounting position. ing. At least one of the holding plates 43a and 43b, in the embodiment, the holding plate 43a provided on the first guide rail 64a mounted on the fixed support member 31 is a direction orthogonal to the longitudinal direction of the first guide rail 64a. In addition, it is possible to move a predetermined amount in the horizontal direction between a board clamp position (position shown in FIG. 6) protruding to the printed board S side and a retreat position (position shown in FIG. 7) retracted from the printed board S. Yes. The holding plate 43b provided on the second guide rail 64b mounted on the movable support member 35 is fixed so as not to move at the board clamp position protruding to the printed board S side.

  In order to enable movement adjustment of the holding plate 43a on the first guide rail 64a side, the holding plate 43a has an interval in the longitudinal direction of the first guide rail 64a as shown in FIGS. A plurality of elongated holes 44 extending in a direction perpendicular to the longitudinal direction of the guide rail 64a are formed, and a fastening bolt 45 penetrating the elongated holes 44 is screwed to the first guide rail 64a so as to be tightened and loosened. . Thus, in a state where the tightening bolt 45 is loosened, the restraining plate 43a is retracted to a position where one end of the elongated hole 44 comes into contact with the tightening bolt 45, whereby the restraining plate 43a is viewed from the board clamp position shown in FIG. 7 so that the printed board S can be taken out above the board transfer device 11 at the retracted position. The holding plate 43a is returned to the substrate clamp position from the retracted position, and is then fixed again to the substrate clamp position by tightening the tightening bolts 35.

  As shown in FIGS. 2, 3, and 5, the first guide rail 64a is provided with a pair of position confirmation marks 47 at both ends in the longitudinal direction of the first guide rail 64a. The position confirmation mark 47 includes a cylindrical body 48 and a rod-like reference mark 49 that is driven into the center of the cylindrical body 48. The cylindrical body 48 into which the reference mark 49 is driven is embedded and fixed in mounting holes 50 formed at both ends of the steel first guide rail 64a. The cylindrical body 48 of the position confirmation mark 47 is made of, for example, silver or white, while the reference mark 49 is made of, for example, black. Therefore, when the position confirmation mark 47 is viewed from above the first guide rail 64a, a black dot is arranged at the center of the circular silver or white portion.

  On the other hand, in the holding plate 43a provided on the first guide rail 64a so as to be movable, there are a pair of through holes 51 for reading the position confirmation marks 47 at both ends in the longitudinal direction of the holding plate 43a. Is formed. The inner diameter of the through hole 51 is set to be the same as or slightly larger than the outer diameter of the cylindrical body 48 of the position confirmation mark 47, and the through holes 51 are formed at the same pitch interval as the position confirmation mark 47. .

  As shown in FIG. 9A, the pair of through-holes 51 formed in the holding plate 43a are arranged in a state where the holding plate 43a is positioned at a regular board clamp position with respect to the first guide rail 64a. The position confirmation mark 47 on the one guide rail 64a substantially coincides with the outer edge 48a of the cylindrical body 48. In other words, the outer edge 48a of the cylindrical body 48, that is, the guide rail 64a is passed through the through hole 51 of the holding plate 43a only when the holding plate 43a is positioned at a normal board clamp position with respect to the first guide rail 64a. The boundary line with the inner edge of the mounting hole 50 can be recognized as a perfect circle, and when the holding plate 43a is not positioned at the proper board clamp position with respect to the first guide rail 64a. The cylindrical body 48 seen through the through-hole 51 of the holding plate 43a becomes a non-perfect circle with a part of the outer edge 48a missing.

  A position confirmation mark 47 similar to that described above is also embedded in the second guide rail 64b mounted on the movable support member 35, and a position confirmation mark 43b is fixed to the holding plate 43b fixed to the second guide rail 64b. A through hole 51 for reading 47 is formed. Since the holding plate 43b on the movable support member 35 side is fixed to the second guide rail 64b so as not to be adjusted, only the reference mark 49 of the position confirmation mark 47 is necessary, and the cylindrical body 48 is unnecessary. In the embodiment, the position confirmation mark 47 common to the reference support member 31 side is used.

  At the component mounting position, the printed board S transported by the board transport device 11 is raised and brought into contact with the lower surfaces of the holding plates 43a and 43b to clamp the printed board S, and the printed circuit board S during component mounting. A backup plate 55 in which a large number of backup pins 54 for backing up are planted is provided so as to be movable up and down. The lift member 53 and the backup plate 55 are moved up and down by lift means and lifting means (not shown). The electronic component mounting apparatus includes a control device 80 illustrated in FIG. 8, and the control device 80 is mainly configured by a CPU 81, a ROM 82, a RAM 83, and a computer 84 having a bus connecting them. Further, an input / output interface 85 is connected to the bus, and a head operating device 91 for operating the X-axis servomotor 18, the Y-axis servomotor 16, and the revolver head 23 is connected via drive circuits 86-88. ing. The control device 80 is connected to an image processing computer 93, a reference mark camera 21, and a component camera 75 that constitute image processing means. The control device 80 is further connected to an input device 94 having a keyboard for inputting data and a display device for displaying data, and various signals including a warning signal are displayed on the display device of the input device 94. It has become so.

  The above-described reference mark camera 21, the reference mark 49 of the position confirmation mark 47, the image processing computer 93, and the like constitute guide rail position confirmation means 95 for confirming the positions of the guide rails 64a and 64b. Further, the above-described reference mark camera 21, the cylindrical body 48 of the position confirmation mark 47, the image processing computer 93, and the like constitute a restraining plate position confirming means 96 for confirming the position of the restraining plate 43a.

  Next, the operation in the above embodiment will be described. The printed circuit board S on which the electronic components are mounted is placed on the conveyor belts 66a and 66b of the substrate transport device 11 and transported to the component mounting position. The printed circuit board S transported to the component mounting position is lifted by the lift member 53 that is lifted and lowered by the lift means, pressed against the lower surfaces of the holding plates 43a and 43b, and clamped by positioning.

  In this state, the electronic component supplied to the component extraction unit 74 by the component supply device 10 is sucked by the suction nozzle of the revolver head 23 and transferred to the component mounting position, and the electronic component is mounted at the required position on the printed circuit board S. Is done. At this time, the printed circuit board S is backed up by a number of backup pins 54 implanted in the backup plate 55.

  By the way, when changing the conveyance width of the first and second guide rails 64a and 64b in accordance with the width of the printed board S to be conveyed, the movable support member 35 is positioned at a desired position with reference to the reference support member 31. Adjust and fix. Specifically, the drive motor 40 is rotated by a predetermined amount in a predetermined direction according to the change amount of the width S1 of the printed board S to be transported, and the position of the movable support member 35 is adjusted by the feed screw 39 and the feed nut 41. adjust.

  Subsequently, in order to confirm that the movable support member 35 has been adjusted to a predetermined position with respect to the reference support member 31, position confirmation marks 47 provided on the first and second guide rails 64a and 64b are placed on the X axis. The position of the first guide rail 64a and the second guide rail 64b is acquired by image processing by the reference mark camera 21 provided on the slide 17 and image processing by the image processing computer 93, and the second guide rail with respect to the first guide rail 64a. A distance of 64b is calculated. Accordingly, it can be confirmed that the conveyance width of the first and second guide rails 64a and 64b has been adjusted to a predetermined position.

  On the other hand, when the printed circuit board S can be taken out for maintenance or the like, the tightening bolt 45 fixing the holding plate 43a on the first guide rail 64a is loosened, and the holding plate 43a is extended. It retracts along the hole 44 to the retracted position shown in FIG. In this state, as shown by a two-dot chain line in FIG. 7, one end of the printed board S on the first guide rail 64a side is lifted, and the printed board S is taken out between the conveyor belts 66a and 66b and the holding plates 43a and 43b. .

  Thereby, even if the printed circuit board S is large in size across the adjacent mounting modules in the line configuration of the plurality of connection modules, the printed circuit board S is removed in advance, so that it does not interfere with the adjacent mounting modules. As a result, only necessary mounting modules can be pulled forward to perform necessary maintenance, and it is not necessary to pull out all mounting modules straddled by the printed circuit board S, so that the work load can be reduced and work efficiency can be improved. it can.

  When the necessary maintenance is completed, the mounting module is returned to the original position, the holding plate 43a on the first guide rail 64a is slid again along the elongated hole 44, and advanced to the board clamp position shown in FIG. At that position, the clamping bolt 45 is tightened to fix the holding plate 43a to the first guide rail 64a.

  Thereafter, in order to confirm that the holding plate 43a is returned to the normal board clamp position with respect to the first guide rail 64a, the position on the first guide rail 64a is confirmed through the through hole 51 formed in the holding plate 43a. The cylindrical body 48 of the mark 47 is imaged by the reference mark camera 21, and the position of the holding plate 43a with respect to the first guide rail 64a is acquired by image processing by the image processing computer 93, and the holding plate 43a is returned to the predetermined position. Confirm that it was done.

  That is, by imaging the cylindrical body 48 on the first guide rail 64a through the through hole 51 with the reference mark camera 21, the outer edge 48a of the cylindrical body 48 is a perfect circle as shown in FIG. If it can be obtained, it can be confirmed that the holding plate 43a has been returned to the normal position. On the other hand, when the outer edge 48a of the cylindrical body 48 is a non-perfect circle as shown in FIG. 9B, it can be confirmed that the holding plate 43a has not been returned to the normal position, and an alarm signal or the like is sent. To inform the worker.

  By the way, the upper surfaces of the position confirmation marks 47 embedded in the first and second guide rails 64a and 64b are exposed to the outside through the through holes 51 formed in the holding plates 43a and 43b. The upper surface of the position confirmation mark 47 may be dirty, dust may accumulate on the upper surface, or an electronic component that has dropped from the suction nozzle may adhere during the mounting operation. As a result, the position confirmation mark 47 described above may not be accurately confirmed.

  Therefore, in the present embodiment, the fiducial mark camera 21 captures images including the peripheral portion of the cylindrical body 48 of the position confirmation mark 47 through the through hole 51, and performs image processing, thereby causing contamination and foreign matter to cause the image of FIG. As shown in FIG. 10B, when the outer edge 48a of the cylindrical body 48 becomes unclear and the roundness cannot be detected as shown in FIG. Even when the roundness of 49 cannot be detected, an alarm signal or the like is issued to prompt the operator to clean the position confirmation mark 47.

  According to the above-described embodiment, it is possible to use both the confirmation of the position of the guide rails 64a and 64b and the confirmation of the position of the holding plate 43a by using one position confirmation mark 47. Accordingly, it is not necessary to provide separate position confirmation marks for confirming the positions of the guide rails 64a and 64b and confirming the position of the holding plate 43a, so two kinds of marks (the cylindrical body 48 and the reference mark 49) are used as guides. It is possible to configure the area within the area occupied by the rails 64a and 64b, and it is not necessary to read separate position confirmation marks, so that the number of man-hours required for position confirmation can be reduced and the time required for position confirmation. Can be shortened.

  According to the embodiment described above, the restraining plate position confirming means 96 confirms the position of the restraining plate 43 a based on the roundness of the cylindrical body 48 of the position confirmation mark 47 imaged by the reference mark camera 21. Therefore, it can be confirmed that the restraining plate 43a has been returned to the normal position by simple image processing.

  According to the above-described embodiment, based on the shapes of the cylindrical body 48 and the reference mark 49 of the position confirmation mark 47 imaged by the reference mark camera 21, dirt and foreign matter on the position confirmation mark 47 are detected to promote cleaning. The position confirmation mark 47 can always be kept in a normal state free from dirt and foreign matter, and the position of the guide rails 64a and 64b and the position of the holding plate 43a can be confirmed. Can be done accurately.

  In the above-described embodiment, the example in which the position confirmation mark 47 made up of the cylindrical body 48 and the reference mark 49 driven into the central portion of the cylindrical body 48 is embedded in the mounting hole 50 formed in the guide rail 64a has been described. However, the position confirmation mark 47 is not necessarily a three-dimensional circular portion such as a columnar shape. For example, a flat circular portion (plate or tape or the like) provided with a reference mark at the center is used as a guide. You may make it affix on the rail 64a. Of course, in this case, it is necessary to configure so that the position confirmation mark 47 is not damaged by the holding plate 43a moving on the guide rail 64a. In the above-described embodiment, it is confirmed that the holding plate 43a has been returned to the normal position based on the roundness of the cylindrical body 48 of the position check mark 47. The image processing for confirming that the position has been returned to the normal position is not limited to this, and for example, confirmation based on the concentricity with respect to the reference mark 49 is also possible.

  Furthermore, in the above-described embodiment, the restraining plate 43a is movably provided on the first guide rail 64a mounted on the reference support member 31, but the movable restraint plate is provided on the movable support member 35 side. Alternatively, the holding plates may be movably provided on both sides of the reference support member 31 and the movable support member 35, respectively.

  As described above, the present invention is not limited to the above-described embodiments, and various forms can be adopted without departing from the gist of the present invention described in the claims.

It is a perspective view of the electronic component mounting apparatus which shows embodiment of this invention. It is a top view of the board | substrate conveyance apparatus in an electronic component mounting apparatus. It is sectional drawing of the board | substrate conveyance apparatus cut | disconnected along the 3-3 line of FIG. It is a figure which shows the attachment state of a reference mark camera. It is a disassembled perspective view of the board | substrate conveying apparatus which shows a position confirmation mark. FIG. 6 is a cross-sectional view of a holding plate cut along line 6-6 in FIG. 2. FIG. 7 is an operational state diagram of FIG. 6. It is a block diagram which shows a control apparatus. It is a figure which shows the position confirmation mark seen through the through-hole of a control board, (A) shows the state in which the control board is positioned in the regular position, (B) has not been positioned in the regular position. Indicates the state. It is a figure which shows the dirt state of a position confirmation mark.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Substrate conveyance apparatus, 20 ... Electronic component mounting head, 21 ... Reference mark camera, 30 ... Base, 31 ... Reference support member, 33 ... Guide rail, 34 ... Slider, 35 ... Movable support member, 37 ... Drive device, 43a, 43b ... restraining plate, 44 ... long hole, 45 ... clamping bolt, 47 ... position confirmation mark, 48 ... circular portion (cylindrical body), 49 ... reference mark, 51 ... through hole, 64a, 64b ... guide rail , 66a, 66b ... conveyor belt, 80 ... control device, 93 ... image processing means, 95 ... guide rail position confirmation means, 96 ... pressure plate position confirmation means.

Claims (3)

At least one of a pair of guide rails that guides the printed circuit board on which the electronic component is mounted is movable so that the board conveyance width is variable, and a holding plate attached to the guide rail is mounted on the printed circuit board from above. In the board transport device in the electronic component mounting apparatus, which can move between the board clamp position and the retracted position with respect to the guide rail so that it can be taken out,
A position confirmation mark comprising a circular portion having a reference mark at the center is provided on the upper surface of the guide rail, the through hole having substantially the same diameter as the circular portion of the position confirmation mark is provided in the restraining plate, Formed to match the circular part when positioned at the substrate clamp position,
An image pickup means for picking up an image of the position check mark through the through hole of the holding plate, and a guide rail for checking the position of the guide rail based on image processing of the reference mark of the position check mark picked up by the image pickup means. Electronic component mounting comprising: a position confirmation means; and a restraint plate position confirmation means for confirming a position of the restraint plate based on image processing of the circular portion of the position confirmation mark imaged by the imaging means A substrate transfer device in the apparatus. In Claim 1, The said restraining board position confirmation means confirms the position of the said restraining board based on the roundness of the said circular part of the said position confirmation mark imaged by the said imaging means. A board conveying apparatus in an electronic component mounting apparatus. 2. The apparatus according to claim 1, wherein dirt and foreign matter are detected on the position confirmation mark and a warning is issued based on the shape of the circular portion and the reference mark of the position confirmation mark imaged by the imaging means. The board | substrate conveyance apparatus in the electronic component mounting apparatus characterized by the above-mentioned.

Images