JPWO2014030222A1 - Electronic component mounting machine - Google Patents

Abstract

A bulk feeder, a mounting head (28) for holding an electronic component supplied by the bulk feeder, a moving device for moving the mounting head to an arbitrary position, and a discarding means (102) for discarding the electronic component; In the electronic component mounting machine including the above, the bulk feeder and the discarding unit are connected to the mounting head, and are configured to be movable to an arbitrary position by the moving device together with the mounting head. With such a configuration, it is possible to shorten the moving time of the mounting head at the time of holding the electronic component and at the time of discarding the electronic component, and it is possible to perform an efficient mounting operation.

Description

  The present invention relates to an electronic component mounting machine including a bulk feeder that supplies electronic components, a mounting head that holds electronic components supplied from the bulk feeder, and a moving device that moves the mounting head to an arbitrary position. It is.

  The bulk feeder usually includes a storage unit that stores a plurality of loose electronic components, and a supply passage that leads the electronic components stored in the storage unit to the supply position of the electronic components in a row. The electronic component is supplied at the supply position. The electronic component is held by the mounting head, and the mounting head holding the electronic component moves to the circuit board, so that the electronic component is mounted on the circuit board. In such an electronic component mounting machine, as described in the following patent document, the mounting operation is efficiently performed by mounting electronic components sequentially supplied from the bulk feeder on the circuit board.

JP 2000-22388 A

  In the electronic component mounting machine using the bulk feeder, as described above, efficient mounting work is performed. In recent years, a bulk feeder connected to the mounting head has been developed in order to perform a more efficient mounting operation. Since such a bulk feeder moves together with the mounting head by a moving device, it is possible to shorten the moving time of the mounting head, and a more efficient mounting operation is performed. However, the circuit board supplied by the bulk feeder may be defective. In such a case, it is necessary to discard the electronic component. A disposal means such as a disposal box is usually provided as a disposal part of the electronic component, and the electronic component is discarded in the disposal means. If the time required for the discarding operation can be shortened, a more efficient mounting operation can be performed. The present invention has been made in view of such circumstances, and provides an electronic component mounting machine capable of performing a more efficient mounting operation.

  In order to solve the above-described problem, an electronic component mounting machine according to claim 1 of the present application arranges a storage unit that stores a plurality of loose electronic components and the electronic components stored in the storage unit in a row. A mounting head having a supply path that leads the electronic component to a supply position in a state of being provided, a bulk feeder that supplies the electronic component at the supply position, and a holder for holding the electronic component supplied by the bulk feeder An electronic component mounting machine comprising: a moving device that moves the mounting head to an arbitrary position; and a discarding unit for discarding the electronic component held by the holder. The bulk feeder and the discarding unit include: It is connected to the mounting head, and can be moved to an arbitrary position by the moving device together with the mounting head.

  Moreover, in the electronic component mounting machine according to claim 2, in the electronic component mounting machine according to claim 1, the mounting head includes a plurality of the holding tools, and one of the plurality of holding tools is An electronic component is held at the holding position, and the electronic component held at a position different from the holding position among the plurality of holders is discarded by the discarding means. To do.

  Moreover, in the electronic component mounting machine according to claim 3, in the electronic component mounting machine according to claim 1 or 2, the mounting head includes a plurality of the holding tools, and the plurality of holding tools. At the imaging position where one of them is located, the electronic component is imaged, and the electronic component held at a position different from the imaging position among the plurality of holders is discarded by the discarding means. It is characterized by that.

  According to a fourth aspect of the present invention, in the electronic component mounting machine according to any one of the first to third aspects, the electronic component discarded by the holder is transferred to the bulk feeder. A reuse path for returning is provided.

  Moreover, in the electronic component mounting machine according to claim 5, in the electronic component mounting machine according to claim 4, the reuse path is configured to store the electronic component discarded by the holder in the storage unit of the bulk feeder. It is for returning to (1).

  The electronic component mounting machine according to claim 6 is the electronic component mounting machine according to claim 4 or 5, wherein the number of electronic components returned to the bulk feeder via the reuse path is calculated. A measuring instrument for measuring is provided.

  In the electronic component mounting machine according to the first aspect, the bulk feeder and the discarding unit are fixedly connected to the mounting head, and are moved to an arbitrary position by the moving device together with the mounting head. Thereby, when the mounting head holds the electronic component from the bulk feeder and when the mounting head discards the electronic component in the discarding means, it is possible to shorten the moving time of the mounting head. Therefore, according to the electronic component mounting machine of the first aspect, it is possible to perform an efficient mounting operation.

  In the electronic component mounting machine according to the second aspect, the mounting head has a plurality of holders, and the electronic component holding operation and the electronic component discarding operation are performed at different positions. As a result, the holding operation and the discarding operation can be performed at the same time, and a very high throughput can be realized.

  In the electronic component mounting machine according to claim 3, the mounting head has a plurality of holders, and the imaging operation of the electronic component held by the holder and the disposal operation of the electronic component are at different positions. Done. As a result, the imaging operation and the discarding operation can be performed simultaneously, and a very high throughput can be realized.

  According to a fourth aspect of the present invention, there is provided an electronic component mounting machine including a reuse path for returning a discarded electronic component to the bulk feeder. As a result, reusable electronic components can be supplied again to the mounting head, and wasteful disposal of electronic components can be reduced. Furthermore, the amount of electronic components discarded into the disposal means is limited. For this reason, when the discarding unit is full of electronic components, it is necessary to stop the electronic component mounting machine in order to take out the electronic component from the discarding unit. From this point of view, it is possible to suppress wasteful stopping of the mounting machine by reducing the disposal of the electronic component to the disposal unit.

  In the electronic component mounting machine according to the fifth aspect, the reuse path is connected to the storage unit of the bulk feeder. This makes it possible to simplify the structure of the reuse path.

  According to a sixth aspect of the present invention, there is provided a measuring instrument for measuring the number of electronic components returned to the bulk feeder. This makes it possible to appropriately manage the number of electronic components that can be supplied from the bulk feeder.

It is a perspective view which shows the electronic component mounting machine which is an Example of this invention. It is a perspective view which shows the mounting head which an electronic component mounting machine has. It is a perspective view which shows a mounting head and the bulk feeder attached to the mounting head. It is a bottom view which shows a mounting head in the viewpoint from the downward direction. It is a side view which shows the 2nd parts camera attached to the mounting head and its mounting head. It is a perspective view which shows a bulk feeder. It is a side view which shows a bulk feeder. It is sectional drawing in the AA line shown in FIG. It is sectional drawing in the BB line shown in FIG. It is a side view which shows a disposal box attached to the mounting head and the mounting head. It is a side view which shows a mounting head and the electronic component reuse system attached to the mounting head. It is a block diagram which shows the control apparatus with which an electronic component mounting machine is provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention.

<Configuration of electronic component mounting device>
FIG. 1 shows an electronic component mounting apparatus (hereinafter sometimes abbreviated as “mounting apparatus”) 10. The figure is a perspective view in which a part of the exterior component of the mounting apparatus 10 has been removed. The mounting apparatus 10 includes one system base 12 and two electronic component mounting machines (hereinafter, may be abbreviated as “mounting machines”) 16. These two mounting machines 16 are arranged side by side on the system base 12 and perform an operation of mounting electronic components on the circuit board. In the following description, the direction in which the mounting machines 16 are arranged is referred to as an X-axis direction, and a horizontal direction perpendicular to the direction is referred to as a Y-axis direction.

  Each of the mounting machines 16 mainly includes a mounting machine main body 20, a transport device 22, a mounting head moving device (hereinafter also abbreviated as “moving device”) 24, a supply device 26, and a mounting head 28. The mounting machine main body 20 includes a frame portion 30 and a beam portion 32 that is overlaid on the frame portion 30.

  The transport device 22 includes two conveyor devices 40 and 42. The two conveyor devices 40 and 42 are disposed in the frame portion 30 so as to be parallel to each other and extend in the X-axis direction. Each of the two conveyor devices 40 and 42 conveys the circuit board in the X-axis direction by an electromagnetic motor (see FIG. 12) 46. The circuit board is fixedly held by a board holding device (see FIG. 12) 48 at a predetermined position.

  The moving device 24 is an XY robot type moving device. The moving device 24 includes an electromagnetic motor (see FIG. 12) 52 that slides the slider 50 in the X-axis direction and an electromagnetic motor (see FIG. 12) 54 that slides in the Y-axis direction. A mounting head 28 is attached to the slider 50, and the mounting head 28 is moved to an arbitrary position on the frame unit 30 by the operation of the two electromagnetic motors 52 and 54.

  The supply device 26 is a feeder-type supply device, and is disposed at an end portion on the front side of the frame portion 30. The supply device 26 has a tape feeder 70. The tape feeder 70 accommodates the taped component in a wound state. The taped component is a taped electronic component. Then, the tape feeder 70 sends out the taped parts by a delivery device (see FIG. 12) 76. Thereby, the feeder type supply device 26 supplies the electronic component at the supply position by feeding the taped component.

  The mounting head 28 mounts an electronic component on the circuit board held by the transport device 22. As shown in FIGS. 2 to 4, the mounting head 28 includes twelve mounting units 80, and each of the twelve mounting units 80 holds a suction nozzle 82 at the tip. Incidentally, FIG. 2 is a perspective view showing the mounting head 28 in a state where it is detached from the slider 50. FIG. 3 is a perspective view showing the mounting head 28 with the cover removed. FIG. 4 is a bottom view of the mounting head 28 as seen from the viewpoint of the mounting head 28 from below.

  Each suction nozzle 82 communicates with a positive / negative pressure supply device (see FIG. 12) 84 via negative pressure air and positive pressure air passages. Each suction nozzle 82 sucks and holds the electronic component by negative pressure, and detaches the held electronic component by positive pressure. Further, the mounting unit 80 having a generally axial shape is held at an equal angular pitch on the outer peripheral portion of the unit holder 86. The mounting unit 80 is held in a state where the axial direction is vertical. The suction nozzle 82 held at the tip of the mounting unit 80 extends downward from the lower surface of the unit holder 86. Thereby, as shown in FIG. 4, the 12 suction nozzles 82 are arranged in 12 circles on one circumference.

  Each of the twelve mounting units 80 is simultaneously rotated about its own axis by a unit rotation device 88. Specifically, as shown in FIG. 3, the unit rotation device 88 includes a plurality of gears 90 provided at the upper ends of the plurality of mounting units 80 and one gear (not shown) that meshes with the plurality of gears 90. It is configured. Then, the plurality of gears 90 are rotated by the rotation of the one gear, so that each mounting unit 80 is simultaneously rotated around each axis. Thereby, it is possible to change the holding posture of the electronic component sucked and held by each mounting unit 80.

  The unit holder 86 is supported by the head main body 92 of the mounting head 28 so as to be rotatable about its own axis. The unit holder 86 is rotated at an arbitrary angle by the holder rotating device 94. Accordingly, the plurality of suction nozzles 82 arranged on one circumference are rotated at an arbitrary angle with the center of the one circumference as an axis.

  A plurality of rollers 95 functioning as cam followers are provided at the upper end of each mounting unit 80. Each roller 95 is engaged with a cam surface of a cam (not shown) fixed to the head main body 92, and the height of the cam surface changes in the circumferential direction. Each mounting unit 80 is held by a unit holder 86 so as to be movable in the vertical direction. As a result, the mounting unit 80 moves in the vertical direction as the unit holder 86 rotates.

  Specifically, the mounting unit 80 that is stopped at the mounting station that is the stop position farthest from the head main body 92 among the plurality of stop positions of the mounting unit 80 has moved to the lowest position. That is, when the mounting head 28 is moved onto the circuit board, the suction nozzle 82 of the mounting unit 80 stopped at that station comes closest to the circuit board. The electronic component is mounted on the circuit board by the suction nozzle 82 stopped at the mounting station. Further, the electronic component supplied from the tape feeder 70 is sucked and held by the suction nozzle 82 stopped at the mounting station.

  Further, the mounting unit 80 stopped at the station located directly across the axis of the unit holding body 86 of the mounting station, that is, the first imaging station which is the stop position closest to the head main body 92, and the mounting thereof The four mounting units 80 located two on each of the left and right sides of the unit 80 move upward. That is, the five mounting units 80 move upward most around the mounting unit 80 stopped at the first imaging station.

  As shown in FIG. 2, the lower end portion of the head main body 92 extends downward from the lower end portion of the suction nozzle 82 of the mounting unit 80 stopped at the first imaging station, and is bent toward the suction nozzle 82 side. . A first part camera 96 is disposed in the bent portion, and the lower surface of the electronic component held by the suction nozzle 82 is imaged by the first part camera 96. A mark camera 97 (see FIG. 12) 97 is disposed on the lower surface of the bent portion of the head main body 92 so as to face downward. The mark camera 97 images an arbitrary position on the frame unit 30.

  Further, as shown in FIG. 5, a head main body 92 extends to the side of the second imaging station located next to the first imaging station. A second parts camera 98 is attached to the lower end portion of the head main body 92 so as to face the suction nozzle 82 of the mounting unit 80. Thereby, the side surface of the electronic component held by the suction nozzle 82 is imaged by the second parts camera 98.

  Here, the positional relationship between the stations will be described with reference to FIG. Incidentally, when the unit holder 86 rotates in the forward direction, the unit holder 86 rotates clockwise in FIG. When one mounting unit 80a out of the 12 mounting units 80a to 80l is located at the mounting station, that is, when the mounting unit 80a is moved to the lowermost position, the five mounting units 80e to 80e 80i is moving upward most. The mounting unit 80g located at the center of the five mounting units 80e to 80i is positioned at the first imaging station. Further, a mounting unit 80f located on the upstream side of the mounting unit 80g is positioned in the second imaging station.

  The mounting unit 80e located on the upstream side of the mounting unit 80f sucks and holds electronic components supplied from the bulk feeder (see FIG. 3) 100. That is, the station where the mounting unit 80e is stopped is the suction station for the bulk feeder. Further, the mounting unit 80h located on the downstream side of the mounting unit 80g discards the electronic components in the disposal box (see FIG. 10) 102. That is, the station where the mounting unit 80h is stopped is regarded as a disposal station. Furthermore, the mounting unit 80i located on the downstream side of the mounting unit 80h delivers the electronic component to the electronic component reuse system (see FIG. 11) 104. That is, a station where the mounting unit 80i is stopped is a reuse station. Note that the mounting station and the mounting unit 80 stopped at the suction station are moved up and down by the unit lifting device (see FIG. 12) 106 when mounting or sucking electronic components.

  Here, the bulk feeder 100 will be described in detail. The bulk feeder 100 is attached to the head main body 92 of the mounting head 28. For this reason, the bulk feeder 100 is moved to an arbitrary position on the frame unit 30 together with the mounting head 28 by the moving device 24. As shown in FIGS. 6 to 8, the bulk feeder 100 includes a housing 114 in which two case members 110 and 112 are aligned with each other, and an arm member 116 fixed to a lower end portion of the housing 114.

  The arm member 116 is divided into a first arm part 118, a second arm part 120, and a third arm part 122. The first arm portion 118 reaches below the mounting unit 80 located at the suction station. The second arm part 120 is orthogonal to the first arm part 118 in the same plane. The third arm portion 122 is also orthogonal to the first arm portion 118 in the same plane, and extends in the direction opposite to the second arm portion 120. The arm member 116 is bolted to the head main body 92 at the third arm portion 122, and is bolted to the housing 114 at the second arm portion 120.

  The two case members 110 and 112 are plate-shaped with a plate thickness and are erected with their surfaces aligned. As shown in FIG. 8 which is a cross-sectional view taken along the line AA in FIG. 7, a concave portion 128 is formed on the surface 126 of the case member 110 opposite to the mating surface 124 to be matched with the case member 112. Inside the recess 128, a turntable 130 is disposed.

  The turntable 130 has a disk shape, and is held by the case member 110 so as to be rotatable around its central axis. The rotary disk 130 is provided with a rotation drive device 132. The rotating disk 130 is rotated by driving an electromagnetic motor (see FIG. 12) 134 included in the rotation driving device 132. When the turntable 130 rotates in the forward direction, the turntable 130 shown in FIG. 7 rotates counterclockwise.

  A bottom portion 136 of the recess 128 formed in the case member 110 faces the facing surface 138 of the turntable 130. As shown in FIG. 9, which is a cross-sectional view taken along line BB in FIG. 7, permanent magnets 140 are embedded in the facing surface 138. As shown in FIG. 7, ten permanent magnets 140 are embedded at a location near the outer edge of the turntable 130.

  A groove 142 is formed in the mating surface 124 of the case member 110. As shown in FIG. 7, the groove 142 is divided into an annular groove portion 144 and a vertical groove portion 146. The annular groove 144 has a partial annular shape centering on the rotation axis of the rotating disk 130. The vertical groove portion 146 is continuous from the end of the annular groove portion 144 and extends generally in the vertical direction.

  The annular groove portion 144 is formed at a position along the turning trajectory of the permanent magnet 140 accompanying the rotation of the turntable 130. The annular groove 144 extends from the lowermost end of the turning trajectory of the permanent magnet 140 in the rotational direction of the rotating disk 130 in the forward rotation, and passes through the uppermost end of the turning trajectory of the permanent magnet 140 to the foremost end (arm member 116). To the end of the side). On the other hand, the up-down direction groove part 146 continues from the foremost end that extends downward from the annular groove part 144 and extends downward. And it curves toward the front (direction toward the arm member 116) and opens on the front side surface of the case member 110 in a generally horizontal state.

  An electronic component is accommodated in the groove 142. As shown in FIG. 9, the depth of the groove 142 is slightly deeper than the height of the electronic component 150, and the width of the groove 142 is slightly larger than the width of the electronic component 150. The electronic component 150 is accommodated in the groove 142 in a posture in which the width direction thereof is the width direction of the groove 142.

  Further, as shown in FIG. 8, the case member 112 is aligned with the case member 110 at the alignment surface 152. A concave portion 154 is formed on the mating surface 152. As shown in FIG. 7, the recess 154 has a generally semicircular shape, and extends backward from a part of the annular groove 144, specifically, from the lowermost end of the annular groove 144 to reach the uppermost end. It covers the part. The two case members 110 and 112 are mated with each other at the mating surfaces 124 and 152, and the opening of the recess 154 is closed by the bottom 136. Accordingly, the storage portion 156 is defined by the concave portion 154 of the case member 112 and the bottom portion 136 of the case member 110.

  A portion of the annular groove 144 covered by the recess 154 opens into the storage portion 156. Further, the annular groove portion 144 is formed along the turning trajectory of the permanent magnet 140 as described above. For this reason, the electronic component accommodated in the accommodating part 156 is accommodated in the annular groove part 144 by the magnetic force of the permanent magnet 140. Then, the rotation platen 130 rotates in the forward direction by driving the rotation driving device 132, so that the electronic component housed in the annular groove portion 144 moves in the rotation direction of the turntable 130.

  However, the portion of the annular groove 144 that is not covered by the recess 154 is blocked by the mating surface 152 of the case member 112. That is, a portion of the annular groove 144 that is not covered by the recess 154 has a tunnel shape. For this reason, when the electronic component accommodated in the annular groove portion 144 reaches the tunnel-shaped annular groove portion 144 as the turntable 130 rotates, the electronic component protruding from the annular groove portion 144 is The side wall 158 of 154 prevents entry into the tunnel-shaped annular groove 144.

  Specifically, the side wall 158 located at the diameter portion of the semicircular recess 154 is generally erected in the vertical direction. The upper end portion of the side wall 158 is located near the uppermost end of the annular groove portion 144. The annular groove portion 144 located on the upstream side of the side wall 158 opens into the storage portion 156. On the other hand, the annular groove portion 144 positioned on the downstream side of the side wall 158 has a tunnel shape. For this reason, the electronic component protruding from the annular groove 144 contacts the side wall 158 in the vicinity of the uppermost end of the annular groove 144. As a result, only the electronic components appropriately accommodated in the annular groove portion 144 are sent out from the accommodating portion 156.

  An air groove 160 for supplying air is also formed on the mating surface 124 where the groove 142 is formed. The air groove 160 is formed to extend in the vertical direction, and a lower end portion thereof is connected to a boundary portion between the annular groove portion 144 and the vertical groove portion 146. The air groove 160 communicates with an air passage (not shown) connected to an air supply device (not shown) at the upper end. Thereby, the compressed air is jetted into the vertical groove portion 146 via the air groove 160. In addition, an open / close valve (not shown) is provided in the air passage, and supply and shutoff of compressed air are controlled by operation of a solenoid (see FIG. 12) 164 of the open / close valve.

  Further, a groove 166 is formed on the upper surface of the arm member 116 as shown in FIG. The proximal end portion of the groove 166 is connected to the distal end portion of the vertical groove portion 146 formed in the case member 110. The groove 166 is curved toward the first arm portion 118 and extends to the end surface of the first arm portion 118. A pin 167 is erected in the groove 166 in the vicinity of the end face, and the electronic component sent out in the groove 166 is stopped by the pin 167. That is, the location where the pin 167 is erected is the electronic component supply position of the bulk feeder 100.

  Two air grooves 168 and 170 are further formed on the upper surface of the arm member 116. The air grooves 168 and 170 are continuous with the curved portion of the groove 166. The air passages are also communicated with the air grooves 168 and 170 so that the compressed air is ejected through the groove 166 toward the end face of the first arm portion 118. Air groove 168 is connected to the upstream end of the curved portion of groove 166, and air groove 170 is connected to the downstream end of the curved portion of groove 166. Thereby, the electronic component sent out in the groove | channel 166 is prevented from staying in a curved part.

  In the bulk feeder 100 having the above structure, the electronic components are housed in the housing portion 156 in a disjoint state. Then, a plurality of electronic components in a disassembled state are sent out to the supply position in a state where they are aligned in one row. Specifically, the electronic component housed in the housing portion 156 is housed in the annular groove portion 144 by the magnetic force of the permanent magnet 140. Then, the rotating disk 130 is rotated by driving the rotation driving device 132, so that the electronic components in the annular groove portion 144 move in the rotation direction of the rotating disk 130. At this time, a plurality of electronic components are aligned in one row inside the annular groove portion 144.

  When the electronic component in the annular groove portion 144 reaches the tunnel-shaped annular groove portion 144 as the turntable 130 rotates, the electronic component protruding from the annular groove portion 144 contacts the side wall 158 of the recess 154. . As a result, the electronic component in contact with the side wall 158 falls below the storage unit 156. Only the electronic components appropriately accommodated in the annular groove portion 144 further move in the annular groove portion 144 as the turntable 130 rotates.

  As the turntable 130 rotates, the electronic component moves from the inside of the annular groove 144 to the inside of the vertical groove 146. The electronic component moves downward by gravity inside the vertical groove 146. Further, the electronic component is sent out to the groove 166 through the inside of the vertical groove part 146 by the air jetted from the air groove 160 into the vertical groove part 146.

  The electronic component sent out to the groove 166 is further sent out toward the end surface of the first arm portion 118 by the air blown into the groove 166 from the air grooves 168 and 170. The electronic component comes into contact with a pin 167 provided upright in the groove 166. In this way, in the bulk feeder 100, the plurality of electronic components accommodated in a disassembled state are sent out to the supply position in a state of being aligned in one row. The electronic component sent to the supply position is held by the suction nozzle 82e of the mounting unit 80e stopped at the suction station.

  A disposal box 102 for discarding electronic components held by the suction nozzle 82 is fixed to the mounting head 28. Specifically, as shown in FIG. 10, a head body 92 extends to the side of the suction nozzle 82h of the mounting unit 80h stopped at the disposal station. A disposal box 102 is attached to the lower end of the head main body 92. The disposal box 102 has a box shape with an open top, and the tip of the suction nozzle 82h is located above the opening. As a result, the electronic component held by the suction nozzle 82h is detached, and the detached electronic component is discarded in the disposal box 102.

  Further, the mounting head 28 is provided with an electronic component reuse system 104 for returning the electronic component held by the suction nozzle 82 to the bulk feeder 100 again. Specifically, as shown in FIG. 11, a head main body 92 extends to the side of the suction nozzle 82i of the mounting unit 80i stopped at the reuse station. A storage box 180 is attached to the lower end of the head main body 92. A concave portion 182 is formed inside the storage box 180 so as to incline downward toward the center. That is, the recess 182 has a funnel-like shape.

  The tip of the suction nozzle 82 i is located above the opening of the recess 182. For this reason, when the electronic component held by the suction nozzle 82 i is detached, the detached electronic component falls into the recess 182. A through hole 184 that opens to the lower surface of the storage box 180 is formed at the center of the recess 182, that is, the most recessed portion of the funnel-shaped recess 182. The cross section of the through hole 184 is slightly larger than the outer dimension of the electronic component. As a result, the electronic component that has fallen into the recess 182 enters the through hole 184.

  One end of the communication passage 186 is connected to the lower end of the through hole 184, and the other end of the communication passage 186 is connected to the storage portion 156 of the bulk feeder 100. The cross-sectional shape of the communication path 186 is the same as the cross-sectional shape of the through hole 184. Further, the air passage is connected to the communication passage 186, and the compressed air is ejected through the communication passage 186 toward the storage portion 156. Thereby, the electronic component that has entered the through hole 184 is returned to the storage unit 156 of the bulk feeder 100 by the compressed air. Note that an open / close valve (not shown) is provided in the air passage, and supply and shutoff of compressed air are controlled by operation of a solenoid (see FIG. 12) 187 of the open / close valve. Further, the air passage is provided with a measuring instrument 188 for measuring the number of electronic components passing through the air passage, that is, the number of electronic components returned to the bulk feeder 100.

  Moreover, the mounting machine 16 is provided with the control apparatus 190, as shown in FIG. The control device 190 includes a controller 192 and a plurality of drive circuits 194. The plurality of drive circuits 194 include the electromagnetic motors 46, 52, 54, 134, the substrate holding device 48, the delivery device 76, the positive / negative pressure supply device 84, the unit rotation device 88, the holding body rotation device 94, the unit lifting device 106, and the solenoid. 164,187. The controller 192 includes a CPU, a ROM, a RAM, and the like, mainly a computer, and is connected to a plurality of drive circuits 194. Accordingly, the operations of the transport device 22 and the moving device 24 are controlled by the controller 192. The controller 192 is also connected to an image processing device 196 that processes image data obtained by the first parts camera 96, the mark camera 97, and the second parts camera 98. Thereby, the controller 192 can obtain various information from the image data.

<Working with electronic component mounting machine>
The mounting machine 16 can perform mounting work for mounting electronic components on a circuit board by the above-described configuration. More specifically, first, according to a command from the controller 192, the circuit board is transported to the mounting work position, and the circuit board is fixedly held at that position. Next, the controller 192 moves the mounting head 28 onto the circuit board. Then, the circuit board is imaged by the mark camera 97, and the imaged data is processed by the image processing device 196. Thereby, the controller 192 acquires the holding position error of the circuit board by the conveyor devices 40 and 42.

  Further, the controller 192 supplies electronic components corresponding to the type of the circuit board at each supply position by the tape feeder 70 or the bulk feeder 100. The supplied electronic component is held by the suction nozzle 82 of the mounting head 28. Specifically, the electronic component supplied by the bulk feeder 100 is held by the suction nozzle 82 stopped at the suction station. On the other hand, the electronic component supplied by the tape feeder 70 is held by the suction nozzle 82 stopped at the mounting station. However, when the electronic component supplied by the tape feeder 70 is sucked and held, it is necessary to move the mounting head 28 to a supply position by the tape feeder 70. On the other hand, when the electronic components supplied by the bulk feeder 100 are sucked and held, there is no need to move the mounting head 28. For this reason, it is possible to work efficiently.

  Then, when the electronic component is held by the suction nozzle 82 stopped at the mounting station or the suction station, the controller 192 rotates the unit holding body 86. Incidentally, the unit holding body 86 is intermittently rotated by the holding body rotating device 94 by an angle equal to the arrangement angle pitch of the mounting unit 80. For this reason, every time the unit holder 86 rotates intermittently, the suction nozzle 82 that does not hold electronic components stops at the mounting station or the suction station. As a result, the electronic components are sequentially held every intermittent rotation of the unit holder 86.

  Further, when the suction nozzle 82 holding the electronic component stops at the second imaging station due to the rotation of the unit holding body 86, the electronic component held by the suction nozzle 82 is imaged by the second parts camera 98. . Then, the controller 192 processes the captured image data with the image processing device 196, and determines whether the holding posture of the electromagnetic component by the suction nozzle 82 is appropriate.

  Specifically, since the second parts camera 98 captures an image of the electronic component held by the suction nozzle 82 from the side, the second part camera 98 acquires the vertical dimension, the horizontal dimension, and the like of the held electronic component. On the other hand, the vertical dimension, horizontal dimension, and the like of the electronic component when the electronic component is properly mounted on the circuit board are stored in the controller 192 of the control device 190. For this reason, when the dimension of the electronic component stored in the control device 190 matches the dimension of the electronic component based on the imaging data, the holding posture of the electronic component by the mounting head 28 is considered to be appropriate. However, when the dimension of the electronic component stored in the control device 190 is different from the dimension of the electronic component based on the imaging data, it is considered that the holding posture of the electronic component by the mounting head 28 is not appropriate. As described above, whether or not the holding posture of the electronic component is appropriate is determined in the second imaging station.

  Next, when the determination at the second imaging station is completed, the controller 192 rotates the unit holder 86 intermittently. As a result, the suction nozzle 82 moves from the second imaging station to the first imaging station. In the first imaging station, the electronic parts held by the suction nozzle 82 are imaged by the first parts camera 96. Then, the captured image data is processed by the image processing device 196 to determine whether the electronic component held by the suction nozzle 82 is good, that is, whether the electronic component is normal.

  Specifically, since the first parts camera 96 images the electronic component held by the suction nozzle 82 from below, the controller 192 acquires the shape, area, and the like of the lower surface of the held electronic component. On the other hand, the shape, area, etc. of the actual lower surface of the electronic component are stored in the controller 192 of the control device 190. For this reason, when the shape, area, etc. of the electronic component stored in the control device 190 differ from the shape, area, etc. of the electronic component based on the imaging data, it is considered that a part of the electronic component is missing. It is done. That is, it is considered that the electronic component is not normal. On the other hand, when the shape, area, etc. of the electronic component stored in the control device 190 match the shape, area, etc. of the electronic component based on the imaging data, it is considered that the electronic component is normal. In this way, in the first imaging station, it is determined whether or not the electronic component is normal. It should be noted that the determination at the first imaging station is not performed for an electronic component that is not good at the second imaging station, that is, an electronic component that is not held in an appropriate posture by the suction nozzle 82. This is because an electronic component that is not held in an appropriate posture by the suction nozzle 82 is not mounted on the circuit board.

  Subsequently, when the unit holder 86 is intermittently rotated, the suction nozzle 82 moves from the first imaging station to the disposal station. In this disposal station, electronic components that are not normal are discarded. In other words, electronic components that are not well determined in the first imaging station are discarded. Specifically, when the suction nozzle 82 holding an electronic component that is not normal stops at the disposal station, the supply of negative pressure to the suction nozzle 82 is stopped and a slight positive pressure is supplied to the suction nozzle 82. As a result, the electronic component that is not normal is detached from the suction nozzle 82 and discarded in the disposal box 102.

  Further, when the unit holder 86 is intermittently rotated, the suction nozzle 82 moves from the disposal station to the reuse station. In this reuse station, electronic components that are not held in an appropriate posture by the suction nozzle 82 are detached from the suction nozzle 82 and returned to the bulk feeder 100 again. This is because an electronic component that is not held in an appropriate posture is a normal electronic component and is considered a reusable electronic component.

  Specifically, when the suction nozzle 82 that does not hold the electronic component in an appropriate posture stops at the reuse station, the supply of the negative pressure to the suction nozzle 82 is stopped and a slight positive pressure is supplied to the suction nozzle 82. To do. As a result, the electronic component that is not held in an appropriate posture is detached from the suction nozzle 82 and falls into the recess 182 of the storage box 180. Then, the electronic component is returned to the storage unit 156 of the bulk feeder 100 through the through hole 184 and the communication path 186. Thereby, the reusable electronic component is returned to the bulk feeder 100 again.

  As described above, electronic components that are not normal are discarded at the disposal station, and electronic components that are not held in an appropriate posture are returned to the bulk feeder 100 at the reuse station. For this reason, the suction nozzle 82 that has moved to the suction station by the rotation of the unit holder 86 holds the electronic component in an appropriate posture, and the electronic component is normal. Thereby, in the suction station, normal electronic components are mounted on the circuit board in an appropriate posture.

  Further, in the mounting machine 16, the mounting head 28 is provided with the bulk feeder 100, and there is no need to move the mounting head 28 to the electronic component supply position. The electronic component holding operation from the bulk feeder 100 is performed at the suction station, and the electronic component mounting operation on the circuit board is performed at the mounting station. For this reason, it is possible to perform holding work and mounting work simultaneously. Furthermore, in the mounting machine 16, the suction nozzle 82 holding the electronic component is stopped at the disposal station by intermittently rotating the unit holding body 86. For this reason, it is not necessary to move the mounting head 28 even when the electronic component is discarded. The disposal station where the disposal operation is performed is a position different from the suction station and the mounting station. That is, it is possible to simultaneously perform the discarding operation, the holding operation, and the mounting operation. Thus, in the mounting machine 16, the discarding operation, the holding operation, and the mounting operation are performed simultaneously without moving the mounting head 28. As a result, a very high throughput can be realized.

  In the conventional working machine, electronic components that are not held in an appropriate posture by the suction nozzle 82 are discarded. However, in the mounting machine 16, electronic components that are not held in an appropriate posture are returned to the storage unit 156 of the bulk feeder 100 by the electronic component reuse system 104. As a result, reusable electronic components can be supplied again to the mounting head 28, and wasteful disposal of electronic components can be reduced. Furthermore, the amount of electronic components discarded into the disposal box 102 is limited. For this reason, when the disposal box 102 is filled with electronic components, it is necessary to stop the mounting machine 16 in order to take out the electronic components from the disposal box 102. From this point of view, it is possible to suppress wasteful stopping of the mounting machine 16 by reducing the disposal of the electronic components in the disposal box 102.

  The electronic component reuse system 104 is provided with a measuring instrument 188 for measuring the number of electronic components returned to the bulk feeder 100. As a result, the number of electronic components that can be supplied from the bulk feeder 100 can be appropriately managed. Specifically, the number of electronic components accommodated in advance in the bulk feeder 100 and the number of electronic components supplied from the bulk feeder 100 are managed by the controller of the control device 190. For this reason, by using the number of electronic components measured by the measuring instrument 188, the number of afterimages of the electronic components, that is, the number of electronic components that can be supplied from the bulk feeder 100 is calculated. Thereby, the number of electronic components that can be supplied from the bulk feeder 100 is appropriately managed.

  As shown in FIG. 12, the controller 192 of the control device 190 includes a holding posture determination unit 200, an electronic component pass / fail determination unit 202, an electronic component disposal unit 204, an electronic component reuse unit 206, and a reuse number storage unit 208. I have. The holding posture determination unit 200 is a functional unit for determining whether or not the electronic component is appropriately held by the suction nozzle 82. The electronic component quality determination unit 202 is a functional unit for determining whether or not the electronic component held by the suction nozzle 82 is normal. The electronic component discarding unit 204 is a functional unit for discarding the circuit board when the circuit board held by the suction nozzle 82 is not normal. The electronic component reuse unit 206 is a functional unit for returning the electronic component to the bulk feeder 100 when the electronic component is not properly held by the suction nozzle 82. The reuse number storage unit 208 is a functional unit for storing the number of electronic components returned to the bulk feeder 100 by the electronic component reuse system 104.

  Incidentally, in the above-described embodiment, the electronic component mounting machine 16 is an example of an electronic component mounting machine. The moving device 24, the mounting head 28, the bulk feeder 100, the disposal box 102, the communication path 186, and the measuring device 188 constituting the electronic component mounting machine 16 are the moving device, the mounting head, the bulk feeder, the disposal means, the reuse path, and the measurement. It is an example of a container. The suction nozzle 82 constituting the mounting head 28 is an example of a holder. The storage unit 156 and the grooves 142 and 166 constituting the bulk feeder 100 are examples of a storage unit and a supply passage.

  In addition, this invention is not limited to the said Example, It is possible to implement in the various aspect which gave various change and improvement based on the knowledge of those skilled in the art. For example, in the above embodiment, the electronic component is separated from the suction nozzle 82 using positive pressure, but the electronic component can be detached from the suction nozzle 82 by various methods. Specifically, for example, a suction port may be provided in the disposal box 102 and the electronic component may be sucked from the suction nozzle 82 by the suction port.

  Moreover, in the said Example, although the reusable electronic component was returned to the bulk feeder 100 with compressed air, it is possible to return an electronic component to the bulk feeder 100 with various methods. Specifically, for example, the electronic component can be returned to the bulk feeder 100 using its own weight, magnetic force, or the like.

  Moreover, in the said Example, although the electronic component which can be reused is returned to the accommodating part 156 of the bulk feeder 100, you may return to the supply path.

  In the above-described embodiment, the removal of the electronic component for disposal and the removal of the electronic component for reuse are performed in different stations, but may be performed in one station. Specifically, for example, an electronic component that is not normal and an electronic component that is not held in an appropriate posture by the suction nozzle 82 are separated from the suction nozzle 82 at the disposal station. Then, it is determined whether or not the electronic component is a normal electronic component, and even if the electronic component is sent to either the disposal box 102 or the communication path 186 according to the determination. Good.

  Further, the positions of the disposal station and the reuse station are not specifically limited, and may be set at any position. However, since it is necessary to make various determinations using the imaging data, it is desirable to set the positions of the disposal station and the reuse station downstream of the first imaging station and the second imaging station. Further, it is desirable to set the positions of the disposal station and the reuse station upstream of the suction station so that abnormal electronic components or the like are not mounted on the circuit board.

  16: Electronic component mounting machine 24: Moving device 28: Mounting head 82: Suction nozzle (holding tool) 100: Bulk feeder 102: Disposal box (disposal means) 142: Groove (supply passage) 156: Storage section 166: Groove (supply) Aisle) 186: Communication passage (reuse route) 188: Measuring instrument

Claims (6)

A storage portion for storing a plurality of loose electronic components; and a supply passage for guiding the electronic components stored in the storage portion to a supply position of the electronic components in a row, and at the supply position A bulk feeder for supplying parts;
A mounting head having a holder for holding an electronic component supplied by the bulk feeder;
A moving device for moving the mounting head to an arbitrary position;
In an electronic component mounting machine comprising: a discarding means for discarding an electronic component held by the holder;
The bulk feeder and the disposal means are:
An electronic component mounting machine that is connected to the mounting head and can be moved to an arbitrary position by the moving device together with the mounting head. The mounting head has a plurality of the holding tools,
The electronic component is held at a holding position where one of the plurality of holding tools is located,
The electronic component mounting machine according to claim 1, wherein an electronic component held at a position different from the holding position among the plurality of holding tools is discarded by the discarding unit. The mounting head has a plurality of the holding tools,
An electronic component is imaged at an imaging position where one of the plurality of holders is located,
3. The electronic component mounting machine according to claim 1, wherein an electronic component held in one of the plurality of holders located at a location different from the imaging position is discarded by the discarding unit. The electronic component mounting machine
The electronic component mounting machine according to any one of claims 1 to 3, further comprising a reuse path for returning electronic components discarded by the holder to the bulk feeder. The reuse route is
The electronic component mounting machine according to claim 4, wherein the electronic component discarded by the holder is for returning the electronic component to the storage unit of the bulk feeder. The electronic component mounting machine
The electronic component mounting machine according to claim 4 or 5, further comprising a measuring instrument for measuring the number of electronic components returned to the bulk feeder via the reuse path.

Images