JP2018137372A - Counter substrate working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a counter substrate working machine which can independently drive an abutting portion for stopping a substrate with respect to a driving mechanism disposed above a substrate carrying surface.SOLUTION: A counter substrate working machine 1 includes: a substrate conveying device 2; and an abutting portion 53 for stopping a substrate B which can be changed by turning to an upper position P1 that intersects with a substrate conveying surface L of the substrate conveying device 2 and a lower position P2 that does not intersect with the substrate conveying surface L.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a substrate working machine capable of stopping a workpiece being transferred.

  The electronic circuit component mounting system disclosed in Patent Document 1 includes a mechanical contact portion. The contact portion is disposed on the XY robot. The XY robot can move in the horizontal direction above the substrate transfer surface. The contact portion can be changed to a lower position that has entered the substrate transfer surface and an upper position that has been retracted from the substrate transfer surface. In the lower position, the contact portion can stop the substrate being transferred. For this reason, the stop position of the substrate can be adjusted by driving the XY robot and adjusting the position of the contact portion on the substrate transfer surface.

International Publication No. 2003/088730 Pamphlet

  In the XY robot, a mounting head for mounting electronic components on a substrate, an imaging device for imaging the substrate, and the like are arranged. In the case of the electronic circuit component mounting system described in this document, the contact portion is disposed on the XY robot. For this reason, the contact portion and the XY robot cannot be moved independently of each other. SUMMARY OF THE INVENTION An object of the present invention is to provide a substrate working machine capable of independently driving a contact portion for stopping a substrate with respect to a drive mechanism disposed above the substrate transfer surface.

  In order to solve the above-mentioned problems, the substrate work machine of the present invention rotates to a substrate transfer device, an upper position that intersects the substrate transfer surface of the substrate transfer device, and a lower position that does not intersect the substrate transfer surface. And an abutting portion for stopping the substrate that can be changed in accordance with the above.

  According to the substrate working machine of the present invention, the contact portion for stopping the substrate rotates from the lower side with respect to the substrate transfer surface. For this reason, a contact part can be independently driven with respect to the drive mechanism arrange | positioned above a board | substrate conveyance surface. The drive mechanism disposed above the substrate transfer surface includes a drive mechanism (including a slider and an arm, and at least one shaft for a predetermined device (for example, a mounting head, a suction nozzle, an imaging device, a squeegee). (A robot having a rotation axis (bending axis, torsion axis), translation axis, etc.)).

It is a perspective view of the electronic component mounting machine of one Embodiment of the substrate working machine of this invention. It is a perspective view near the right end of the movable wall part of the board | substrate conveyance apparatus of the same electronic component mounting machine. It is a front view of the stopper apparatus of the electronic component mounting machine. It is a left-right direction sectional view near the nut member of the stopper device. It is a circumferential development view of the outer peripheral surface of the cylindrical member of the stopper device. It is a front view of the stopper apparatus of the substrate working machine of other embodiment.

  Hereinafter, an embodiment in which the substrate working machine of the present invention is embodied as an electronic component mounting machine will be described. In the following drawings, the left-right direction corresponds to the “axial direction” of the present invention. The direction from the right side to the left side corresponds to the “X + direction” of the present invention. The direction from the left side to the right side corresponds to the “X-direction” of the present invention. The direction of turning from the front side to the upper side around the screw shaft corresponds to the “θ + direction” of the present invention. The direction of turning from the upper side to the front side around the screw shaft corresponds to the “θ-direction” of the present invention.

<Configuration of electronic component mounting machine>
First, the configuration of the electronic component mounting machine of this embodiment will be described. FIG. 1 is a perspective view of the electronic component mounting machine according to the present embodiment. As shown in FIG. 1, the electronic component mounting machine 1 includes a board transfer device 2, a backup device 3, an XY robot 4, and a stopper device 5. The electronic component mounting machine 1 is included in the concept of “to-board working machine” of the present invention.

  The substrate transfer device 2 includes a base 20, a fixed wall portion 21, a movable wall portion 22, and a belt conveyor (substrate transfer body) 23. A pair of left and right guide rails 200 are disposed on the upper surface of the base 20. Each of the pair of left and right guide rails 200 extends in the front-rear direction. The fixed wall portion 21 is disposed on the upper surface of the base portion 20 and on the front side of the pair of left and right guide rails 200. A clamp piece 210 is disposed on the upper edge of the fixed wall portion 21. The movable wall portion 22 is movable in the front-rear direction along the pair of left and right guide rails 200. A clamp piece 220 is disposed on the upper edge of the movable wall portion 22. The belt conveyor 23 includes a pair of front and rear belts 230. The front belt 230 is disposed on the rear surface (inner surface) of the fixed wall portion 21. The rear belt 230 is disposed on the front surface (inner surface) of the movable wall portion 22. Each of the pair of front and rear belts 230 extends in the left-right direction (the conveyance direction of the substrate B). A substrate conveyance surface (conveyance path for the substrate B) L is set between the pair of front and rear belts 230. The altitude of the substrate transport surface L matches the altitude of the upper surface of the belt 230 (the surface on which the substrate B is placed). The substrate B is placed on a pair of front and rear belts 230 and is transported on the substrate transport surface L from the left side (upstream side) to the right side (downstream side).

  The backup device 3 includes a table 30 and a plurality of backup pins 31. The table 30 can be moved in the vertical direction by a ball screw device (not shown). The plurality of backup pins 31 are disposed on the upper surface of the table 30.

  The XY robot 4 is movable in the horizontal direction along an X direction (left and right direction) guide rail (not shown) and a Y direction (front and rear direction) guide rail (not shown). The XY robot 4 is driven in the left-right direction by an X-axis motor (not shown) and in the front-rear direction by a Y-axis motor (not shown). The XY robot 4 includes a mounting head 40 and a mark camera 41. The mark camera 41 is included in the concept of the “imaging device” of the present invention. The mounting head 40 includes a suction nozzle 400. The suction nozzle 400 can mount an electronic component on the substrate B. The mark camera 41 is disposed on the rear side of the suction nozzle 400. The mark camera 41 can capture the reference mark M on the upper surface of the substrate B.

  FIG. 2 is a perspective view of the vicinity of the right end of the movable wall portion of the board transfer device of the electronic component mounting machine according to the present embodiment. FIG. 3 shows a front view of the stopper device of the electronic component mounting machine. FIG. 4 shows a cross-sectional view in the left-right direction near the nut member of the stopper device. In FIG. 2, the substrate B is shown through.

  As shown in FIGS. 2 to 4, the stopper device 5 is disposed on the front surface near the right end (near the downstream end) of the movable wall portion 22. The stopper device 5 is disposed in the ring of the belt 230. The stopper device 5 includes a motor 50, a screw shaft 51, a nut member 52, a pin 53, a protective collar 54, a coil spring 55, and a tubular member 56. The pin 53 is included in the concept of the “contact portion” of the present invention. The coil spring 55 is included in the concept of the “pressure contact portion” of the present invention.

  The motor 50 is a servo motor. The screw shaft 51 is connected to the drive shaft of the motor 50. The screw shaft 51 can rotate around its own axis by the driving force of the motor 50. The screw shaft 51 extends in the left-right direction. A groove 510 is recessed in the outer peripheral surface of the screw shaft 51. The groove 510 extends spirally.

  The nut member 52 includes a first member 520 and a second member 521. The first member 520 has a cylindrical shape. The first member 520 is mounted on the screw shaft 51. A groove 520 a is recessed in the inner peripheral surface of the first member 520. The groove portion 520a extends in a spiral shape. The groove portion 520a of the first member 520 and the groove portion 510 of the screw shaft 51 are screwed together via the ball b. A flange portion 520b is disposed at the right end of the first member 520 (the end opposite to the second member 521). An engaging portion 520 c is disposed at the left end (end on the second member 521 side) of the first member 520. The second member 521 has a cylindrical shape. The second member 521 is mounted on the screw shaft 51. The second member 521 is disposed on the left side of the first member 520. A groove portion 521 a is recessed in the inner peripheral surface of the second member 521. The groove 521a extends in a spiral shape. The groove 521a of the second member 521 and the groove 510 of the screw shaft 51 are screwed together via the ball b. A flange portion 521b is disposed at the left end of the second member 521 (the end opposite to the first member 520). An engaging portion 521c is disposed at the right end (the end on the first member 520 side) of the second member 521. The engaging part 520c and the engaging part 521c are engaged with each other. For this reason, the first member 520 and the second member 521 are not easily displaced from each other in the circumferential direction.

  The pin 53 protrudes from the flange portion 520b of the first member 520 toward the radially outer side. The protective collar 54 is mounted around the radially inner end of the pin 53. The protective collar 54 can rotate around the axis of the pin 53 with respect to the pin 53.

  The coil spring 55 is interposed between the flange portion 520b of the first member 520 and the flange portion 521b of the second member 521. The coil spring 55 urges the first member 520 and the second member 521 in a direction to separate them from each other. Due to the urging force, the groove 520a of the first member 520 is in pressure contact with the groove 510 of the screw shaft 51 via the ball b. Similarly, the groove 521a of the second member 521 is in pressure contact with the groove 510 of the screw shaft 51 via the ball b. For this reason, the frictional force between the nut member 52 and the screw shaft 51 is large. Due to the frictional force, the nut member 52 rotates without rattling as the screw shaft 51 rotates.

  The cylindrical member 56 is disposed on the left side of the motor 50. The cylindrical member 56 has a cylindrical shape extending in the left-right direction. A screw shaft 51 and a nut member 52 are housed inside the cylindrical member 56. An opening 560 is formed in the side wall (side peripheral wall) of the cylindrical member 56. The opening 560 has a long hole shape that is long in the left-right direction. The pin 53 protrudes outside the cylindrical member 56 through the opening 560.

  A first restricting portion G1 is set at the upper edge (θ + direction end) of the opening 560. The restricting part G1 has a linear shape extending in the left-right direction. The restricting part G1 sets the upper position P1 of the pin 53. In the upper position P1, the pin 53 protrudes on the substrate transport surface L. For this reason, the pin 53 can be brought into contact with the substrate B transported on the substrate transport surface L (when the electronic component is mounted on the lower surface of the substrate B, the concept includes the electronic component). . At the upper position P1, the upper surface of the pin 53 can be imaged by the mark camera 41 shown in FIG. For this reason, the control device (not shown) of the electronic component mounting machine 1 can recognize the upper position P1. The upper position P1 corresponds to a component mounting position described later. The nut member 52 is movable along the restricting portion G1 from the right side to the left side (in the X + direction). At the time of movement, the protective collar 54 rolls while being in sliding contact with the restricting portion G1.

  A second restricting portion G2 is set at the front edge (θ-direction end) of the opening 560. The regulating part G2 has a linear shape extending in the left-right direction. The restricting part G2 sets a lower position P2 of the pin 53. The lower position P2 is set below the upper position P1. In the lower position P2, the pin 53 is retracted downward from the substrate transfer surface L. For this reason, the pin 53 cannot contact the substrate B transported on the substrate transport surface L. The nut member 52 is movable along the restricting portion G2 from the left side to the right side (in the X-direction). At the time of movement, the protective collar 54 rolls while being in sliding contact with the restricting portion G2.

<Motion at the time of component installation>
Next, the movement at the time of component mounting of the electronic component mounting machine of this embodiment will be described. The electronic component mounting machine 1 executes a board carry-in process, a component mounting process, and a board carry-out process at the time of mounting the parts. FIG. 5 shows a circumferential development of the outer peripheral surface of the cylindrical member of the stopper device of the electronic component mounting machine according to the present embodiment.

  In the board carrying-in process, the board B is carried into a predetermined component mounting position from a device on the left side (for example, an electronic component mounting machine). If the board B does not stop at a predetermined component mounting position, it becomes difficult to mount an electronic component at a predetermined mounting coordinate of the board B in a component mounting process which is a subsequent process. For this reason, the control device of the electronic component mounting machine 1 first rotates the pin 53 from the lower position P2 to the upper position P1, as shown in FIGS. Specifically, the control device drives the motor 50 shown in FIG. 2 to rotate the screw shaft 51 around its own axis from the front side to the upper side (in the θ + direction). As shown in FIG. 4, the groove portion 520 a of the first member 520 is in pressure contact with the groove portion 510 of the screw shaft 51 via the ball b. For this reason, as the screw shaft 51 rotates, the nut member 52, that is, the pin 53 also rotates. In this way, the control device switches the pin 53 from the lower position P2 to the upper position P1. Next, the control device images the pin 53 with the mark camera 41 shown in FIG. The control device confirms from the image that “the pin 53 is arranged at the upper position P1”. Subsequently, the control device drives the belt conveyor 23 to carry the board B into the component mounting position. After the board | substrate B carried in contact | abuts to the pin 53 of the upper position P1, a control apparatus stops the belt conveyor 23. FIG. The upper position P1 corresponds to the component mounting position. For this reason, the board | substrate B can be accurately stopped at a component mounting position. Then, the control device lifts the substrate B from the belt 230 by the backup device 3 shown in FIG. Thereafter, the substrate B is sandwiched and fixed between the upper and lower pair of clamp pieces 210 and 220 and the lower plurality of backup pins 31.

  In the component mounting process, the control device mounts a desired electronic component at predetermined mounting coordinates on the board B using the suction nozzle 400 shown in FIG. In the substrate unloading process, the control device first places the substrate B on the belt 230 by the backup device 3 shown in FIG. Next, as shown in FIGS. 2 and 5, the control device rotates the screw shaft 51 around its own axis from the upper side to the front side (in the θ− direction). Then, the pin 53 is rotated from the upper position P1 to the lower position P2. Then, the control device drives the belt conveyor 23 to carry out the board B from the component mounting position.

<Operations when changing board type>
Next, the movement of the electronic component mounting machine of this embodiment when changing the type of the board will be described. When the type of the board B to be produced by the electronic component mounting machine 1 is changed (for example, at the time of setup change), the stop position of the board may be changed according to the dimension of the board B after the change. In this case, the control device changes the switching position of the pin 53 (the switching position between the lower position P2 and the upper position P1).

  For example, when changing the position of the pin 53 from the switching position a4 shown in FIG. 5 to the left switching position a2 (in the X + direction), the control device moves the screw shaft 51 around its own axis from the front side to the upper side. Rotate (in the θ + direction). Then, the pin 53 is switched to the upper position P1. Next, the control device continuously rotates the screw shaft 51 around its own axis in the θ + direction. Here, at the upper position P1, as shown in FIG. 2, the protective collar 54 is in contact with the restricting portion G1. For this reason, while the screw shaft 51 continues to rotate, the pin 53, that is, the nut member 52 stops rotating. The groove portion 520a of the first member 520 and the groove portion 510 of the screw shaft 51 are screwed together via the ball b. In addition, the groove 521a of the second member 521 and the groove 510 of the screw shaft 51 are screwed together via the ball b. For this reason, the nut member 52 moves from the right side to the left side (in the X + direction) by the rotation of the screw shaft 51. In this way, the position of the pin 53 is changed from the switching position a4 to the switching position a2.

  On the contrary, when changing the position of the pin 53 from the switching position a4 shown in FIG. 5 to the right switching position a6 (in the X-direction), the control device moves the screw shaft 51 around its own axis from the upper side. Rotate forward (in the θ-direction). Then, the pin 53 is switched to the lower position P2. Next, the control device continuously rotates the screw shaft 51 in the θ-direction around its own axis. Here, at the lower position P2, as shown in FIG. 2, the protective collar 54 is in contact with the restricting portion G2. For this reason, while the screw shaft 51 continues to rotate, the pin 53, that is, the nut member 52 stops rotating. The groove portion 520a of the first member 520 and the groove portion 510 of the screw shaft 51 are screwed together via the ball b. In addition, the groove 521a of the second member 521 and the groove 510 of the screw shaft 51 are screwed together via the ball b. For this reason, the nut member 52 moves from the left side to the right side (in the X-direction) by the rotation of the screw shaft 51. In this way, the position of the pin 53 is changed from the switching position a4 to the switching position a6.

  In this way, when changing the switching positions a1 to a6 from the right side to the left side (in the X + direction), the screw shaft 51 is rotated from the front side to the upper side (in the θ + direction). On the other hand, when changing the switching positions a1 to a6 from the left side to the right side (in the X-direction), the screw shaft 51 is rotated from the upper side to the front side (in the θ-direction).

<Effect>
Next, the effect of the electronic component mounting machine of this embodiment is demonstrated. As shown in FIGS. 2 to 5, according to the electronic component mounting machine 1 of the present embodiment, the pin 53 rotates with respect to the board transfer surface L from below. The pin 53 is disposed independently from the XY robot (drive mechanism disposed above the substrate transfer surface L) 4. For this reason, the pin 53 can be driven independently with respect to the XY robot 4.

  As shown in FIGS. 2 to 5, according to the stopper device 5 of the electronic component mounting machine 1 of the present embodiment, the nut member 52 rotates with the rotation of the screw shaft 51, whereby the position of the pin 53 is changed. The position can be switched between the upper position P1 and the lower position P2. That is, the substrate B being transferred can be stopped and passed. In addition, while allowing the screw shaft 51 to rotate, by restricting the rotation of the nut member 52, the nut member 52, that is, the pin 53 can be moved in the left-right direction. That is, the upper position P1 (stop position of the substrate B) of the pin 53 can be adjusted in the left-right direction. Thus, according to the stopper device 5 of the electronic component mounting machine 1 of the present embodiment, the pin 53 can be moved in the circumferential direction and the left-right direction only by rotating the screw shaft 51. For this reason, the drive mechanism of the pin 53 is simple.

  2 to 5, according to the stopper device 5 of the electronic component mounting machine 1 of the present embodiment, the rotation of the pin 53 is regulated by the first regulating part G1 and the second regulating part G2. can do. Specifically, the upper position P1 of the pin 53 can be set by the first restricting portion G1. In addition, the lower position P2 of the pin 53 can be set by the second restricting portion G2. Further, the pin 53 can be moved from the right side to the left side (in the X + direction) along the first restricting portion G1. In addition, the pin 53 can be moved from the left side to the right side (in the X-direction) along the second restricting portion G2.

  As shown in FIG. 4, the coil spring 55 is interposed between the flange portion 520 b of the first member 520 and the flange portion 521 b of the second member 521. The coil spring 55 urges the first member 520 and the second member 521 in a direction to separate them from each other. Due to the biasing force, the groove portion 520a of the first member 520 is in pressure contact with the groove portion 510 of the screw shaft 51 via the ball b. Similarly, the groove 521a of the second member 521 is in pressure contact with the groove 510 of the screw shaft 51 via the ball b. For this reason, the frictional force between the nut member 52 and the screw shaft 51 is large. The nut member 52 can be reliably rotated by the frictional force as the screw shaft 51 rotates.

  Further, as shown in FIG. 5, the pin 53 is movable over the entire length of the restricting portions G1 and G2 (the entire length in the left-right direction of the opening 560). The full length in the left-right direction of the opening 560 is the axial direction setting area A1 of the upper position P1 and the lower position P2. The axial direction setting area A1 determines the amount of movement of the nut member 52 in the left-right direction. Within the axial direction setting area A1, the axial positions of the upper position P1 and the lower position P2 can be freely set according to the type of the substrate B, the transport direction of the substrate B (left → right, right → left), etc. can do. Moreover, the circumferential direction full length of the opening part 560 is the circumferential direction setting area | region A2 of the upper position P1 and the lower position P2. Within the circumferential direction setting area A2, the circumferential positions of the upper position P1 and the lower position P2 can be freely set according to the type of the substrate B, the transport direction of the substrate B, and the like. Further, as described above, the groove portion 520a of the first member 520 and the groove portion 510 of the screw shaft 51 are screwed together via the ball b. For this reason, the axial position and the circumferential position of the upper position P1 and the lower position P2 can be changed continuously, not in stages.

  As shown in FIGS. 2 and 3, when the nut member 52 moves along the restricting portions G1 and G2, the protective collar 54 rolls while slidingly contacting the restricting portions G1 and G2. For this reason, the pin 53 can be protected from abrasion with the restricting portions G1 and G2.

  By the way, a method of managing the stop position of the substrate B using a non-contact type sensor instead of the mechanical stopper device 5 is also conceivable. For example, a non-contact type sensor is arranged at the left end (upstream end) of the belt conveyor 23 shown in FIG. 1 and the belt conveyor 23 is stopped after a predetermined time has elapsed after the substrate B passes the sensor, whereby the substrate B It is also conceivable to set the at the component mounting position. However, according to this method, when the substrate B is displaced with respect to the belt 230 (for example, when the substrate B bounces on the belt 230 or when the substrate B slips on the belt 230), the substrate B It becomes difficult to accurately set the mounting position. In this regard, according to the stopper device 5 of the electronic component mounting machine 1 of the present embodiment, the substrate B is stopped by physically and forcibly bringing the substrate B being conveyed into contact with the pins 53. For this reason, the board | substrate B can be set to a component mounting position with a sufficient precision. In a single production line, the sensor and the stopper device 5 may be used in combination.

  Further, according to the electronic component mounting machine 1 of the present embodiment, the pin 53 shown in FIG. 2 and the XY robot 4, that is, the mark camera 41 shown in FIG. 1 can be driven independently of each other. For this reason, the control device can confirm from the image of the mark camera 41 that “the pin 53 is disposed at the upper position P1”. That is, the regular upper position stored in the storage unit of the control device can be compared with the actual upper position P1. For this reason, the positioning accuracy of the upper position P1 is increased.

<Others>
The embodiment of the substrate working machine of the present invention has been described above. However, the embodiment is not particularly limited to the above embodiment. Various modifications and improvements that can be made by those skilled in the art are also possible.

  The extending direction of the upper edge, front edge, left edge, and right edge of the opening 560 shown in FIG. 5 is not particularly limited. The upper edge (restricting part G1) and the front edge (restricting part G2) may extend in a direction including the left-right direction (left → right, right → left) and the circumferential direction. The left edge and the right edge may extend in a direction including the circumferential direction and the left-right direction.

  The total circumferential length (circumferential setting region A2) of the opening 560 is not particularly limited. It only needs to include the upper position P1 (position where the pin 53 contacts the substrate B). For example, when the upper position P1 is set right above the screw shaft 51, the opening 560 may be opened in the cylindrical member 56 from the front side to the rear side through the upper side (over 180 °). . In this case, the lower position P2 may be set on at least one of the front side and the rear side of the upper position P1.

  The upper position P <b> 1 may not be set directly above the screw shaft 51. The lower position P2 may not be set on the front side of the screw shaft 51. In the upper position P1, the pin 53 may be in contact with the substrate B. On the contrary, in the lower position P2, the pin 53 may not contact the substrate B.

  The full length in the left-right direction (axial setting region A1) of the opening 560 is not particularly limited. What is necessary is just to change suitably according to the kind of board | substrate B, the conveyance direction of the board | substrate B, etc. FIG. For example, the opening 560 may be disposed over the entire length of the belt conveyor 23 in the left-right direction. Further, a plurality of openings 560 may be juxtaposed on the single cylindrical member 56 in the left-right direction. That is, a plurality of nut members 52 may be arranged on a single screw shaft 51. For example, the component mounting position of the board B may be determined by the pin 53 of one nut member 52, and the standby position of the board B may be determined by the pin 53 of the other nut member 52. The set number and position of the switching positions a1 to a6 shown in FIG. 5 are not particularly limited. What is necessary is just to change suitably according to the kind of board | substrate B, the conveyance direction of the board | substrate B, etc. FIG.

  FIG. 6 shows a front view of a stopper device for a substrate working machine according to another embodiment. In addition, about the site | part corresponding to FIG. 3, it shows with the same code | symbol. As shown in FIG. 6, a pair of beam members 57a and 57b may be arranged instead of the cylindrical member. The beam members 57a and 57b extend in the left-right direction. A restricting portion G1 is set in the upper beam member 57a. A restricting portion G2 is set on the lower beam member 57a. The screw shaft 51 is provided with a pair of stopper rings 58a and 58b spaced apart in the left-right direction. The pair of stopper rings 58a and 58b determines the amount of movement of the nut member 52 in the left-right direction. This simplifies the configuration of the stopper device 5.

  Instead of the mark camera 41 shown in FIG. 1, the control device may check the position of the pin 53 (upper position P1, lower position P2, left-right direction position, etc.) using an encoder of the motor 50. Further, the position of the pin 53 may be confirmed by using the mark camera 41 and the encoder together. That is, the configuration of the “detection unit” for detecting the position of the pin 53 is not particularly limited.

  The type of the pressure contact portion (coil spring 55 shown in FIG. 4) is not particularly limited. The nut member 52 may be brought into pressure contact with the screw shaft 51 from the radially outer side by the press contact portion. For example, the nut member 52 is constituted by a plurality of partial arc-shaped split bodies, and in a direction in which the split bodies are close to each other (a direction in which the diameter of the nut member 52 is reduced) between a pair of split bodies adjacent in the circumferential direction. A coil spring that generates an urging force may be interposed. Further, the nut member 52 may be brought into pressure contact with the screw shaft 51 using a hydraulic mechanism, a pneumatic mechanism, or the like. The kind of contact part (pin 53 shown in FIG. 3) is not specifically limited. The contact portion may be a convex portion formed integrally with the nut member 52.

  The protective collar 54 shown in FIG. 6 may be merely in sliding contact with the restricting portions G1 and G2 (not rolling). In this case, the protective collar 54 may be made of a low friction material such as a fluororesin. Of course, only the sliding contact surface with respect to the restricting portions G1 and G2 in the protective collar 54 may be covered with a low friction material. Further, the protective collar 54 may only roll (do not slide) with respect to the restricting portions G1 and G2. In this case, the protective collar 54 may be made of an elastic material such as an elastomer.

  The extending direction of the screw shaft 51 is not particularly limited. It may be the transport direction (left-right direction) of the substrate B or the width direction (front-rear direction) of the substrate B. When the extending direction of the screw shaft 51 is the width direction of the substrate B, the position of the pin 53 can be adjusted in the width direction of the substrate B. Depending on the type of the substrate B, a notch portion may be arranged at a corner (front right corner, rear right corner) on the downstream side (front side in the traveling direction) of the substrate B. In this case, if the position of the pin 53 can be adjusted in the width direction of the substrate B, the pin 53 does not come into contact with the notch at the upper position P1 (the pin 53 is the downstream edge (right edge) of the substrate B). The position of the pin 53 can be adjusted. For this reason, it can suppress that the stop position of the board | substrate B shifts | deviates.

  The type of actuator that drives the screw shaft 51 is not particularly limited. A stepping motor or the like may be used. Further, the screw shaft 51 may be driven manually (manually). Thus, the position of the pin 53 can be changed even when the electronic component mounting machine 1 is powered off. The configurations of the screw shaft 51 and the nut member 52 shown in FIG. 4 are not particularly limited. Without disposing the ball b, one of the outer peripheral surface of the screw shaft 51 and the inner peripheral surface of the nut member 52 may be provided with a screw thread on one side and a screw groove that engages with the screw thread on the other side. . That is, the structure of the screw shaft 51 and the nut member 52 may not be the same structure as the ball screw.

  The direction from the left side to the right side may correspond to the “X + direction” of the present invention. The direction from the right side to the left side may correspond to the “X-direction” of the present invention. The direction of turning from the upper side to the front side around the screw shaft 51 may correspond to the “θ + direction” of the present invention. The direction of turning from the front side to the upper side around the screw shaft 51 may correspond to the “θ-direction” of the present invention.

  The kind of substrate working machine is not particularly limited. It may be a production line constituent device (for example, a screen printing machine, a board appearance inspection machine, a reflow furnace, etc.) other than the electronic component mounting machine. The stopper device 5 may be used independently of the substrate working machine. For example, the stopper device 5 is a substrate transfer device 2 that does not perform a predetermined operation on the substrate B (a substrate B standby (buffer) that is arranged between a pair of substrate work machines in the production line). You may arrange | position to the board | substrate conveyance apparatus 2). Moreover, you may arrange | position the stopper apparatus 5 in conveyance apparatuses (for example, a roller conveyor, a wheel conveyor, etc.) other than the board | substrate conveyance apparatus 2. FIG. In this case, the type of the workpiece (conveyance target) of the conveyance device is not particularly limited. For example, raw materials, semi-processed products, products, and the like may be used.

  1: electronic component mounting machine (for substrate working machine), 2: board transfer device, 3: backup device, 4: XY robot, 5: stopper device, 20: base, 21: fixed wall, 22: movable wall, 23: belt conveyor, 30: table, 31: backup pin, 40: mounting head, 41: mark camera (imaging device), 50: motor, 51: screw shaft, 52: nut member, 53: pin (contact part) 54: protective collar, 55: coil spring (pressure contact portion), 56: cylindrical member, 57a: beam member, 57b: beam member, 58a: stopper ring, 58b: stopper ring, 200: guide rail, 210: clamp piece, 220: clamp piece, 230: belt, 400: suction nozzle, 510: groove portion, 520: first member, 520a: groove portion, 520b: flange portion, 520c: engagement portion 521: Second member, 521a: groove portion, 521b: flange portion, 521c: engagement portion, 560: opening, A1: axial direction setting region, A2: circumferential direction setting region, B: substrate, G1: regulating portion, G2 : Restriction part, L: substrate transport surface, M: reference mark, P1: upper position, P2: lower position, a1 to a6: switching position, b: ball

Claims (6)

A substrate transfer device;
A contact portion for stopping the substrate that can be changed by rotation to an upper position that intersects the substrate transport surface of the substrate transport apparatus and a lower position that does not intersect the substrate transport surface;
An anti-substrate work machine.   The substrate work machine according to claim 1, further comprising an imaging device capable of imaging the contact portion.   The substrate working machine according to claim 1, further comprising a restricting portion that restricts rotation of the contact portion. A screw shaft that can rotate around its own axis;
A nut member mounted on the screw shaft;
The abutting portion that is arranged on the nut member and is changeable between the upper position and the lower position by rotating the nut member as the screw shaft rotates.
While restricting the rotation of the screw shaft while restricting the rotation of the nut member, the restricting portion for guiding the nut member in a direction including the axial direction;
The substrate working machine according to claim 3, further comprising a stopper device having the following. The stopper device includes a cylindrical member in which the screw shaft and the nut member are accommodated, and an opening extending in the axial direction is opened on a side wall.
The direction from one to the other of the axial directions of the screw shaft is the X + direction, the direction from the other to the one of the axial directions of the screw shaft is the X-direction, and the one of the circumferential directions of the screw shaft is from the one to the other. The direction is the θ + direction, and the direction from the other of the circumferential directions of the screw shaft to the one is the θ− direction.
At the θ + direction end of the opening, the first restricting portion that guides the nut member in a direction including the X + direction and sets the upper position is disposed.
5. The substrate-to-board operation according to claim 4, wherein the second regulating portion that guides the nut member in a direction including the X-direction and sets the lower position is disposed at a θ-direction end of the opening. Machine.   The said stopper apparatus is a board | substrate working machine of Claim 4 or Claim 5 provided with the press-contact part which press-contacts the said nut member to the said screw shaft, when rotating the said contact part.

Images