JP5084646B2 - Substrate positioning mechanism and substrate transfer device - Google Patents

Description

  The present invention relates to a board positioning mechanism and a board transfer apparatus, and more particularly to a board positioning mechanism and a board transfer apparatus suitable for use in a component mounting apparatus.

  In a component mounting apparatus for mounting a component on a board, a board transport apparatus for transporting a board is usually provided, and the board is transported to a predetermined position in the component mounting apparatus by the board transport apparatus, and is fixed. Components are mounted on the board.

  FIG. 1A is a plan view schematically showing an example of a board positioning mechanism in a board conveying apparatus of a conventional component mounting apparatus, and FIG. 1B is a cross-sectional view taken along line BB in FIG. FIG. In the substrate positioning mechanism 100, a main part related to conveyance is configured by a conveyance belt 106 being stretched around two pulleys 104 rotatably supported on a conveyance rail 102. When the pulley 104 is rotated by obtaining a rotational driving force from a motor (not shown), the conveyor belt 106 is driven, and the upper surface of the conveyor belt 106 advances in the conveyance direction (arrow direction shown in the drawing). As a result, the substrate 1 placed on the transport belt 106 is transported in the transport direction (the arrow direction in the figure).

  Further, the substrate positioning mechanism 100 includes a stopper device 108 on the downstream side in the transport direction of the substrate 1 in order to stop and position the substrate 1. The stopper device 108 has a role of stopping and positioning the substrate 1 conveyed by the conveying belt 106, and has a stopper block 108A and a cylinder 108B. The stopper block 108A has a rectangular parallelepiped shape and is moved up and down in the vertical direction by the cylinder 108B. By setting the stopper block 108A to the raised position, the conveyed substrate 1 comes into contact with the stopper block 108A and stops. At that position, the substrate 1 is fixed by the clamp mechanism, and the component mounting operation on the substrate 1 is started.

  In addition, the stopper block 108A in FIG. 1 is in a raised state in order to come into contact with the end face of the substrate 1 being conveyed and stop the substrate 1. After the substrate 1 is stopped and the substrate 1 is positioned, the stopper block 108A descends vertically downward to the standby position so as not to obstruct the conveyance of the substrate 1.

  Similar to the conventional example described above, a substrate positioning mechanism and a substrate transport apparatus including a stopper device in which a stopper block moves up and down in the vertical direction are described in, for example, Patent Document 1.

  In addition, unlike the substrate positioning mechanism 200 shown in FIGS. 2A and 2B, the stopper block does not move up and down in the vertical direction, but the stopper block rotates around the fulcrum, and the locus of the arc is changed. A substrate positioning mechanism including a stopper device 208 that moves in a vertical direction is also considered.

  In this substrate positioning mechanism 200, after the end surface of the substrate 1 being conveyed comes into contact with the stopper block 208 </ b> A in the raised position, the substrate block 1 is stopped and positioned, and then the stopper block 208 </ b> A is Rotate about the fulcrum 210 and move downward to draw a circular arc locus. A substrate positioning mechanism and a substrate transport apparatus in which the stopper block draws a circular locus are described in Patent Document 2, for example.

  For convenience of illustration, FIG. 1A shows only the stopper block 108A for the stopper device 108, and FIG. 2A shows only the stopper block 208A for the stopper device 208. 3A, FIG. 4A, and FIG. 5A, which will be described later, only the stopper block is illustrated for the stopper device for the sake of illustration.

Japanese Patent Laid-Open No. 10-200289 JP 2005-93765 A

  However, in the conventional substrate positioning mechanism 100 shown in FIG. 1, when positioning is performed by bringing the substrate 1 into contact with the stopper block 108A, the end surface of the substrate 1 and the stopper block 108A are in surface contact. For this reason, when the stopper block 108A is lowered downward in the vertical direction, rubbing occurs between the end surface of the substrate 1 and the stopper block 108A.

  On the other hand, burrs may exist on the end surface of the substrate 1. If there is a burr on the end surface of the substrate 1, the stopper block 108A is moved downward in the vertical direction, and when rubbing occurs between the end surface of the substrate 1 and the stopper block 108A, the burr is horizontally applied to the substrate 1. May be shocked.

  For this reason, in the conventional substrate positioning mechanism 100, after the substrate 1 is brought into contact with the stopper block 108A and the substrate 1 is positioned, the substrate block 1 is moved downward in the vertical direction to the standby position. In some cases, the parts already mounted on the top may be displaced.

  On the other hand, in the conventional substrate positioning mechanism 200 shown in FIG. 2, the stopper block 208A moves about the arc 210 by rotating around the fulcrum 210, so that the end surface of the substrate 1 and the stopper There is no rubbing with the block 208A, and even if burrs exist on the end surface of the substrate 1, no horizontal force is applied to the substrate 1 through the burrs. The parts already mounted did not get out of position.

  However, when the stopper block 208A is moved downward so as to draw an arc trajectory, the stopper block 208A moves in the transport direction of the substrate 1 by a length corresponding to the radius of the arc. For this reason, the stopper block 208A is moved upward and held at the board stop position unless the board 1 after mounting the component is transported in the transport direction from the board stop position by a length corresponding to the radius of the arc. There is a problem that the waiting time until the board on which the component is mounted next is carried into the component mounting position becomes long.

  The present invention has been made in view of such a problem, and even if the stopper block is lowered vertically from the position for determining the substrate position to the standby position, the components already mounted on the substrate can be obtained. It is an object of the present invention to provide a substrate positioning mechanism and a substrate transfer device that do not shift in position and do not increase the waiting time until a substrate on which a component is mounted next is carried into a component mounting position.

  The substrate positioning mechanism according to the present invention is a substrate positioning mechanism in which a stopper block that can move vertically in the vertical direction comes into contact with a substrate being transported to stop the substrate. The block portion is an upward surface that is inclined to face the transport direction of the substrate, and solves the above problems. Here, the upward surface that is inclined to face the substrate transport direction is an angle formed by an outward normal vector and the substrate transport direction that is greater than 90 ° and less than 180 °, and the method A line vector is a plane parallel to a vertical plane parallel to the substrate transport direction.

  The substrate transfer apparatus according to the present invention includes the substrate positioning mechanism, and solves the problems.

  According to the present invention, the portion of the stopper block that comes into contact with the substrate being transferred is an upward surface that is inclined to face the substrate transfer direction. It becomes a lower corner, and the stopper block and the substrate are in line contact. Therefore, even if the stopper block is lowered downward in the vertical direction from the state in which the stopper block is in contact with the end face of the substrate, no friction is generated between the stopper block and the substrate. For this reason, even if there is a burr on the end surface of the substrate, a horizontal force is not applied to the substrate shockingly when the stopper block descends in the vertical direction.

  For this reason, when the substrate is positioned according to the present invention, when the stopper block is lowered downward in the vertical direction, the components already mounted on the substrate will not be displaced, and a highly accurate product ( Component mounting board) can be manufactured.

  Further, since the stopper block moves up and down in the vertical direction, the waiting time until the board on which the component is mounted next is carried into the component mounting position does not increase.

  Hereinafter, the substrate positioning mechanism of the substrate transport apparatus according to the embodiment of the present invention will be described in detail with reference to the drawings. The same components as those of the conventional substrate positioning mechanism 100 are denoted by the same reference numerals, Description is omitted.

  3A is a plan view schematically showing the substrate positioning mechanism 10 of the substrate transfer apparatus according to the first embodiment of the present invention, and FIG. 3B is a cross-sectional view taken along line BB in FIG. It is line sectional drawing.

  The substrate positioning mechanism 10 includes a stopper device 18 on the downstream side in the transport direction of the substrate 1 in order to stop and position the substrate 1. The stopper device 18 has a role of stopping and positioning the substrate 1 conveyed by the conveying belt 106, and includes a stopper block 18A and a cylinder 18B.

  The stopper block 108A of the conventional substrate positioning mechanism 100 has a rectangular parallelepiped shape, but the stopper block 18A of the stopper device 18 of the substrate positioning mechanism 10 according to the first embodiment has a sector shape with a central angle of 90 °. The shape of the cylinder is divided into four equal parts, and the surface in contact with the substrate 1 is an upward circumferential surface 18A1 that is inclined to face the conveyance direction of the substrate 1. The stopper block 18A is moved up and down in the vertical direction by the cylinder 18B. By setting the stopper block 18A in the raised position, the conveyed substrate 1 comes into contact with the stopper block 18A and stops. At that position, the substrate 1 is fixed by the clamp mechanism, and the component mounting operation on the substrate 1 is started.

  The stopper block 18A has a sector shape with a central angle of 90 ° as described above, and has a shape obtained by dividing a cylinder into four equal parts. The surface in contact with the substrate 1 is inclined upward facing the conveyance direction of the substrate 1. Therefore, when the stopper block 18A comes into contact with the end surface of the substrate 1, the contact portion becomes a corner below the end surface of the substrate 1, and the stopper block 18A and the substrate 1 are separated from each other. It will come in contact with a line. Therefore, even if the stopper block 18A is lowered downward in the vertical direction from the state in which the stopper block 18A is in contact with the end face of the substrate 1, no rubbing occurs between the stopper block 18A and the substrate 1. For this reason, even if there is a burr on the end surface of the substrate 1, when the stopper block 18A descends vertically downward, no horizontal force is applied to the substrate 1 in a shocking manner.

  For this reason, if the board | substrate 1 is positioned using the board | substrate positioning mechanism 10 which concerns on 1st Embodiment, when lowering | stopping the stopper block 18A to a perpendicular direction downward, position shift will be carried out to the components already mounted on the board | substrate 1. It does not occur, and a highly accurate product (component mounting board) can be manufactured.

  Next, the substrate positioning mechanism 30 of the substrate transport apparatus according to the second embodiment of the present invention will be described.

  4A is a plan view schematically showing the substrate positioning mechanism 30 of the substrate transport apparatus according to the second embodiment of the present invention, and FIG. 4B is a cross-sectional view taken along line BB in FIG. It is line sectional drawing.

  Similarly to the stopper device 18 of the substrate positioning mechanism 10 according to the first embodiment of the present invention having the stopper block 18A and the cylinder 18B, the stopper device 38 of the substrate positioning mechanism 30 according to the second embodiment of the present invention. Also includes a stopper block 38A and a cylinder 38B.

  However, in the stopper block 18A of the substrate positioning mechanism 10 according to the first embodiment of the present invention, the portion in contact with the end surface of the substrate 1 is the upward circumferential surface 18A1 that is inclined to face the conveyance direction of the substrate 1. However, in the substrate positioning mechanism 30 of the substrate transport apparatus according to the second embodiment of the present invention, the portion where the stopper block 38A is in contact with the end surface of the substrate 1 is upward facing the substrate 1 transport direction. This point is different from this plane 38A1.

  However, since the flat surface 38A1 is also an upward surface that is inclined to face the conveyance direction of the substrate 1, similarly to the circumferential surface 18A1, the contact portion when the stopper block 38A contacts the end surface of the substrate 1 is the substrate. 1 and the stopper block 38A and the substrate 1 are in contact with each other by a line.

  For this reason, even when the substrate 1 is positioned using the substrate positioning mechanism 30 according to the second embodiment, when the stopper block 38A is lowered downward in the vertical direction, it is positioned on a component already mounted on the substrate 1. There is no deviation, and a highly accurate product (component mounting board) can be manufactured.

  As described above, the first and second embodiments of the present invention have been described. However, if the portion of the stopper block that comes into contact with the end surface of the substrate 1 is an upward surface inclined to face the conveyance direction of the substrate 1, It may not be a circumferential surface or a plane, and may be a surface shape other than a circumferential surface or a plane. As long as the surface is an upward surface that is inclined to face the conveyance direction of the substrate 1, the contact portion when the stopper block contacts the end surface of the substrate 1 is the substrate 1, even if the surface shape is other than the circumferential surface or the plane. This is because the stopper block and the substrate 1 are in line contact with each other.

  Further, by adding well-known motors, sensors, control units, and the like necessary for transporting and stopping the substrate to the substrate positioning mechanisms 10 and 30 described above, the substrate transport apparatus according to the embodiment of the present invention can be configured. it can.

  Further, as a measure for preventing the position of components already mounted on the substrate 1 from being displaced even when the stopper block in contact with the substrate 1 is lowered downward in the vertical direction, the first of the present invention In addition to the measures corresponding to the shape of the stopper block as in the substrate positioning mechanisms 10 and 30 of the second embodiment and the second embodiment, there is a measure corresponding to the locus when the stopper block is moved.

  As an example of the movement trajectory of the stopper block that prevents the position of the components already mounted on the substrate 1 from shifting, as in the conventional substrate positioning mechanism 200 shown in FIGS. There is an arc trajectory for rotating the stopper block 208A around 210. If the stopper block 208A is moved downward so as to draw a circular locus, even if there is a burr on the end surface of the substrate 1, a horizontal force is applied to the substrate 1 shockingly as the stopper block 208A is lowered. There is no.

  However, as described above, when the stopper block is moved up and down so as to draw an arc trajectory, there is a problem that the waiting time until the board on which the component is mounted next is carried into the component mounting position becomes long. is there.

  On the other hand, in the substrate positioning mechanism 50 shown in FIGS. 5A and 5B, the two pins 60 provided on the stopper device 58 are provided on the support member 62, and the ellipse whose major axis is the vertical direction. The stopper device 58 and the stopper block 58A move along the same elliptical trajectory as the groove 62A. ing.

  For this reason, in the board positioning mechanism 50, the stopper block can be moved upward in a state in which the transport distance from the board stop position of the board after component mounting is shorter than that of the board positioning mechanism 200. For this reason, the waiting time until the board on which the component is mounted next is carried into the component mounting position is shorter than that of the board positioning mechanism 200.

  Therefore, when the locus when moving the stopper block is devised so that the horizontal force is not applied to the substrate 1 by shock when the stopper block is lowered, the movement locus of the stopper block is an arc. Instead, it is better that the long axis is an ellipse whose vertical direction is the same as the substrate positioning mechanism 50. Furthermore, it is desirable to be as close to vertical movement as possible.

  Here, in the substrate positioning mechanisms 10 and 30 of the substrate transport apparatus according to the embodiment of the present invention, the stopper blocks 18A and 38A move up and down in the vertical direction, so that the movement locus of the stopper block is an ellipse. Further, the waiting time until the board on which the component is mounted next is carried into the component mounting position is shorter than in the case of 50.

It is a figure which shows typically an example of the board | substrate positioning mechanism in the board | substrate conveyance apparatus of the conventional component mounting apparatus, (A) Top view, (B) BB sectional drawing of FIG. 1 (A) It is a figure which shows typically the other example of the board | substrate positioning mechanism in the board | substrate conveyance apparatus of the conventional component mounting apparatus, (A) Top view, (B) BB sectional drawing of FIG. 2 (A) It is a figure which shows typically the board | substrate positioning mechanism in the board | substrate conveyance apparatus which concerns on 1st Embodiment of this invention, (A) Top view, (B) BB sectional drawing of FIG. 3 (A) It is a figure which shows typically the board | substrate positioning mechanism in the board | substrate conveyance apparatus which concerns on 2nd Embodiment of this invention, (A) Top view, (B) BB sectional drawing of FIG. 4 (A) The figure which shows typically the example of improvement of the other example of the said board | substrate positioning mechanism, (A) Top view, (B) BB sectional drawing of FIG. 5 (A)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Substrate 10, 30 ... Substrate positioning mechanism 18, 38 ... Stopper device 18A, 38A ... Stopper block 18A1 ... Circumferential surface 38A1 ... Plane 18B, 38B ... Cylinder 102 ... Conveying rail 104 ... Pulley 106 ... Conveying belt

Claims (2)

In a substrate positioning mechanism in which a stopper block that can move up and down in the vertical direction comes into contact with a substrate being conveyed and stops the substrate,
A substrate positioning mechanism, wherein a portion of the stopper block that comes into contact with a substrate being conveyed is an upward surface that is inclined to face the substrate conveyance direction.   A substrate transfer apparatus comprising the substrate positioning mechanism according to claim 1.

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