JP4887067B2 - Electronic component mounting device - Google Patents

Description

  In the present invention, a plurality of component supply units for supplying electronic components in the storage tape to the component extraction position are arranged side by side on the feeder base, and the suction nozzle takes out the electronic components supplied from the component supply unit and The present invention relates to an electronic component mounting apparatus to be mounted on a machine.

In this type of electronic component mounting device, particularly a high-speed gantry-type mounting device, the component supply unit is fixed and does not move. Therefore, so-called splicing replenishment in which storage tapes are connected and replenished during automatic operation is employed. The number of users is increasing rapidly. A method for connecting the storage tapes of this type is disclosed in, for example, Patent Document 1, but a technique for simplifying the connecting work has been proposed.
JP-A-5-338618

  However, when the storage tapes are connected to each other by the connection tape to cut the electronic parts, a plurality of electronic components fall from the storage part at the connection part, that is, the seam during the connection work, and a plurality of empty storage parts are generated. There is a fear. Then, when this empty storage part is sent to the electronic component take-out part, the suction nozzle also moves up and down with respect to a plurality of empty storage parts, and the electronic component is picked up and taken out from the storage part In other words, a so-called useless adsorption operation is repeated, and a problem arises in that the operating rate of the apparatus decreases.

  Therefore, the present invention avoids useless operation of sucking electronic components to the empty storage portion and maintains the operating rate of the apparatus when a plurality of empty storage portions are generated at the joint. Objective.

Therefore, according to the first aspect of the present invention, a plurality of component supply units that supply the electronic components stored in the storage portion of the storage tape to the component take-out portion by feeding operation of the storage tape are arranged side by side and supplied from the component supply unit. A first presence / absence detecting means for detecting presence / absence of a component taken out by the suction nozzle; and A second presence / absence detecting means for detecting the presence / absence of an electronic component in the storage unit before the electronic component is sucked by the suction nozzle, and a seam provided for each of the component supply units and connecting the storage tapes to each other And when the first presence / absence detecting means detects that there is no electronic component, the joint is detected by the detecting means. When the predetermined seam zone including the first zone reaches the take-out portion and the second presence / absence detecting means detects that there is no electronic component, without performing the suction operation of the electronic component by the suction nozzle, And a controller for controlling the component supply unit to feed the storage tape.
According to a second aspect of the present invention, a plurality of component supply units that supply electronic components stored in a storage portion of the storage tape to a component take-out portion by a feeding operation of the storage tape are arranged in parallel, and the electronic components supplied from the component supply unit are arranged. In an electronic component mounting apparatus in which a suction nozzle picks up a component on a printed circuit board by a suction nozzle, and a first presence / absence detection unit that detects the presence or absence of the component taken out by the suction nozzle; A second presence / absence detecting means for detecting the presence / absence of an electronic component in the storage unit before the electronic component is sucked by the suction nozzle, and a joint formed by connecting the storage tapes provided for each of the component supply units; When the detection means and the first presence / absence detection means detect that there is no electronic component, the seam is detected by the detection means and includes the seam. When the second zone detection means detects that there is no electronic component, the component supply is performed without causing the suction nozzle to suck the electronic component. The unit is controlled so as to feed the storage tape, and it is further determined that the joint is not detected by the detection means and a predetermined joint zone including the joint has not reached the take-out portion. And a controller for stopping the mounting operation when the first presence / absence detecting means continuously detects that there is no electronic component for a predetermined number of times.

  Even when the storage tapes are connected by a connection tape or the like, the present invention avoids useless suction operation with respect to the connection portion, that is, the empty storage portion at the joint, and maintains the operating rate of the apparatus. Can do.

  Hereinafter, an electronic component mounting apparatus including a component supply apparatus and an electronic component mounting apparatus main body will be described with reference to the accompanying drawings. This electronic component mounting apparatus is a so-called multifunctional chip mounter, and various electronic components can be mounted on the printed circuit board P.

  FIG. 1 is a plan view of an electronic component mounting apparatus. An electronic component mounting apparatus main body 1 includes a machine base 2, a conveyor unit 3 extending in the left-right direction at the center of the machine base 2, Two sets of component mounting portions 4 and 4 and two sets of component supply portions 5 and 5 are provided respectively at a portion (lower side in the drawing) and a rear portion (upper side in the drawing). Then, a plurality of component supply units 6 that are electronic component supply devices are detachably incorporated in the component supply unit 5 to constitute an electronic component mounting device.

  The conveyor unit 3 includes a central set table 8, a left supply conveyor 9, and a right discharge conveyor 10. The printed circuit board P is supplied from the supply conveyor 9 to the set table 8, and is set stationary and at a predetermined height in order to receive the mounting of the electronic components by the set table 8. Then, the printed circuit board P on which the mounting of the electronic components is completed is discharged from the set table 8 to the downstream device via the discharge conveyor 10.

  Each component mounting unit 4 is provided with an XY stage (beam) 12 on which a head unit 13 is movably mounted, a component recognition camera 14 (first presence detection means) which is a first recognition camera, and A nozzle stocker 15 is provided. The head unit 13 has two mounting heads 16 and 16 for sucking and mounting electronic components, and a first unit for recognizing the position of the printed circuit board P and the status of an electronic component storage portion of a storage tape described later. A board recognition camera 17 (second presence / absence detection means) which is a second recognition camera is mounted. Normally, the XY stages 12 and 12 of both the component mounting parts 4 and 4 are alternately operated. Further, as the first presence / absence detecting means, for example, a line sensor that detects the suction state of the electronic component after the electronic component is sucked by the suction nozzle may be used.

  In each XY stage 12, the beam 12A is moved in the Y direction by the Y axis drive motor 12Y, and the head unit 13 is moved in the X direction by the X axis drive motor 12X. As a result, the head unit 13 is moved in the XY direction. It becomes.

  As will be described later, each component supply unit 5 includes a number of component supply units 6 on a feeder base 19 that are detachable side by side. Each component supply unit 6 has a storage tape C (described later) in which a large number of electronic components are stored in each storage portion Cc at regular intervals. By intermittently feeding the storage tape C, the component supply unit 6 One electronic component is supplied from the tip to the component mounting portion 4 one by one.

  The operation based on the mounting data stored in the storage unit of the electronic component mounting apparatus main body 1 is performed by first driving the XY stage 12 so that the head unit 13 faces the component supply unit 6 and then the suction nozzle provided on the mounting head 16. A desired electronic component is picked up (taken out) by lowering 18. Subsequently, after the mounting head 16 is raised, the XY stage 12 is driven to move the electronic component to a position directly above the component recognition camera 14 to recognize the suction posture and the positional deviation with respect to the suction nozzle 18. Next, after the mounting head 16 is moved to the position of the board P on the set table 8 and the position of the board P is recognized by the board recognition camera 17, based on the recognition results by the component recognition camera 14 and the board recognition camera 17. The X-axis drive motor 12X, the Y-axis motor 12Y of the XY stage 12 and the θ-axis drive motor 18A of the suction nozzle 18 are corrected and moved to mount electronic components on the printed circuit board P.

  Next, the component supply unit 6 will be described with reference to FIGS. The component supply unit 6 includes a unit frame 21, a storage tape reel (not shown) that is rotatably mounted on the unit frame 21, and a storage tape C that is sequentially wound in a state of being wound around the storage tape reel. A tape feeding mechanism (tape feeding device) 22 that intermittently feeds to the pickup position (suction take-out position), and a cover tape peeling mechanism 20 to be described later for peeling the cover tape Ca of the storage tape C before the pickup position. The

  The storage tape C fed out from the storage tape reel is fed to the pickup position so as to dive under the suppressor 23 disposed in the tape path before the pickup position. The suppressor 23 has an opening for pickup. The suppressor 23 is formed with a slit, and the cover tape Ca of the storage tape C is peeled off from the slit and stored in the storage portion (storage recess) 26. That is, the electronic component mounted on the storage tape C is sent to the pickup opening in a state where the cover tape Ca is peeled off, and is picked up by the suction nozzle 18.

  Next, the tape feeding mechanism 22 will be described with reference to FIG. The tape feeding mechanism 22 includes a servomotor 28 that is a drive source capable of forward and reverse rotation having a gear 27 on its output shaft, and a gear 30 in which a timing belt 29 is stretched between the gear 27 at one end. A feed shaft formed on the storage tape C and having a rotating shaft 33 rotatably supported by a support 31 via a bearing 32 and a worm wheel 35 meshing with a worm gear 34 provided at an intermediate portion of the rotating shaft 33. The sprocket 36 is configured to mesh with the hole Cb and send it. The worm wheel 35 and the support shaft 37 of the sprocket 36 pass through the intermediate partition of the unit frame 21.

  Therefore, when the servo motor 28 is driven and rotated in order to supply the electronic components in the storage tape C in the component supply unit 6, the gear 27 and the gear 30 are rotated via the timing belt 29, thereby rotating the rotating shaft 33. The sprocket 36 rotates only by a predetermined angle in the feed direction via the worm gear 34 and the worm wheel 35, whereby the storage tape C is intermittently fed through the feed hole Cb.

  Next, the cover tape peeling mechanism 20 will be described. The cover tape peeling mechanism 20 includes a drive motor 42 provided with a worm gear 41 on its output shaft, a gear 45 surrounding the gear 45 and a gear 43 that meshes with the gear 41, and a support shaft fixed to a support body 44 fixed to the unit frame 21. A first rotating body 46 rotatably supported through 46A, and a support body that includes a gear 47 that meshes with the contact portion 51 and the gear 45 around the first rotating body 46, and is fixed to the unit frame 21 via the mounting body 48. The unit frame 21 is provided with a second rotating body 50 rotatably supported by a support shaft 49A on a support shaft 49 and an abutting portion 52 that is urged by and abutted by the abutting portion 51 and a spring 55 around the second rotating body 50. A third rotating body 56 rotatably supported via a support shaft 56A by a mounting body 54 that can swing via the support shaft 53, a roller 57 that guides the cover tape Ca, and a unit frame 21 is provided with a roller 60 for guiding the cover tape Ca guided by the roller 57 at the end of a mounting body 59 that can swing through a support shaft 58 and is urged by a spring 61 to be tensioned to the cover tape Ca. It is comprised from the tension application body 62 for adding. Reference numeral 63 denotes a stopper for restricting the swing of the mounting body 59.

  Therefore, when the cover tape Ca is peeled off, when the drive motor 42 is driven, the first rotating body 46 rotates via the gear 41 and the gear 43, and when the first rotating body 46 rotates, the gear 45 is rotated. And the second rotating body 50 rotates via the gear 47, and when the second rotating body 50 rotates, the contact portion 52 and the contact portion 51 urged by the spring 55 sandwich the cover tape Ca. In this state, the third rotating body 56 rotates, and the cover tape Ca of the storage tape C is peeled off by one pitch from the slit of the suppressor 23, and is provided at the end of the component supply unit 6 without being loosened. Stored in the storage unit 26.

  The suppressor 23 has a substantially L-shaped cross section from a vertical piece serving as a support portion and a horizontal piece that holds the storage tape C engaged with the teeth of the sprocket 36 so that the feed hole Cb is not removed. 21, a vertical piece is supported on the inside so as to be rotatable about a support shaft at the rear end portion, and a locking body (not shown) urged by a spring in a locking direction to the front end portion of the horizontal piece. ) Is provided with a vertical locking piece having a locking hole that can be locked.

  In addition, in a state where the suppressor 23 serving as a peeling fulcrum of the cover tape Ca of the storage tape C is rotated upward, the loading that communicates with the tape passage 64 formed in the unit frame 21 from the side of the component supply unit 6. The storage tape C can be loaded into the component supply unit 6 through the opening 65 for use. Reference numeral 66 denotes a prevention member for preventing the storage tape C loaded in the component supply unit 6 from being detached from the loading opening 65, and is provided in the vicinity of the rear end portion of the horizontal passage of the tape passage 64, in the middle portion, or in an oblique passage. In the vicinity of the upper end portion of the tube or at the boundary between the horizontal passage and the oblique passage (see FIG. 2).

  Reference numeral 68 denotes a label attached to the rear surface of the handle 77 of the component supply unit 6, and a bar code indicating the serial number of the component supply unit 6 is written on the label 68. Accordingly, the barcode can be read by a barcode scanner (not shown) even when the plurality of component supply units 6 are attached to the electronic component mounting apparatus main body 1 in close proximity to each other.

  Next, a large number of component supply units 6 are detachably arranged in parallel on the feeder base 19, and the configuration thereof will be described. First, as shown in FIGS. 1, 4, and 5, a pair of guide members 70 having parallel side surfaces 70 </ b> A for guiding each component supply unit 6 are provided on the upper surface of the feeder base 19 via a plurality of mounting pins 101. Provided on the bottom surface of the component supply unit 6 is a guided member 71 having a U-shaped cross section in which a concave portion 71A is formed on each outer surface to which the pair of guide members 70 are fitted and guided. Yes. Further, the front side end portions of the pair of guide members 70 are inclined upward, and opposite side surfaces 70B are formed so that the distance between them becomes farther toward the front.

  A pair of guide members 70 are provided corresponding to the component supply unit 6. However, since a plurality of component supply units 6 are arranged side by side, the guide member 70 is a guide member 70 of the adjacent component supply unit 6. Also used as

  Then, when the guided member 71 is guided by the pair of guide members 70 and moved to attach the component supply unit 6 while sliding the guided member 71 on the feeder base 19. A front-rear restricting member 72 is provided at the end of the feeder base 19 on the depth side to restrict the position of the component supply unit 6 in the front-rear direction by contacting the guided member 71.

  Further, on the feeder base 19 between the side surfaces 70A of the front portion of the guide member 70, a cylindrical shape that fits in the restriction groove 71B of the guided member 71 and restricts the position of the component supply unit 6 in the left-right direction. Rear left and right restricting pins 73 are provided. Further, a cylindrical front left / right restriction pin 74 that fits in a restriction groove 71B of the guided member 71 in the vicinity of the front / rear restriction member 72 where the guide member 70 is not provided and restricts the position in the left / right direction. Is formed.

  However, the regulation groove 71B of the guided member 71 is engaged with the front left / right regulation pin 74 having a larger diameter than the rear left / right regulation pin 73 and regulates the position of the component supply unit 6 in the left / right direction. When the component supply unit 6 is mounted and fixed on the feeder base 19, the width of the restriction groove 71 </ b> B is restricted in order to restrict the position in the left-right direction. It is formed substantially the same as the diameter of the pin 74, and is formed substantially the same as the diameter of the rear left / right regulating pin 73 at a position where the rear left / right regulating pin 73 is fitted.

  Further, a handle 77 is formed at the rear part of the component supply unit 6, and a lock release lever 79 that is rotatable about the support shaft 78 is provided. The lock release member 81 provided with the abutting portion 81A and rotatably supported with the support shaft 80 as a fulcrum, and the lock release lever 79 are connected to the connection plate 84 rotatably supported by the support shafts 82 and 83. Are connected through. The lock release member 81 is urged to rotate counterclockwise by a spring 85, but counterclockwise rotation is restricted by a restriction pin 86.

  A coil spring 90 is stretched between the attachment member 87 of the feeder base 19 and a locking member 89 that can be rotated with the support shaft 88 as a fulcrum, and is locked with the first lock member 92 provided in the component supply unit 6. A locking member 89 having a possible first locking portion 89A is urged to rotate clockwise. The first lock member 92 includes a roller 92A and a support member 92B on which the roller 92A is provided. A release device that releases the lock between the first lock portion 89A of the lock member 89 and the roller 92A of the first lock member 92 is configured from the lock release lever 79, the lock release member 81, the connecting plate 84, and the like. Is done.

  When the component supply unit 6 is attached to the feeder base 19, the operator holds the handle 77 and moves the component supply unit 6 in the depth direction while the guided member 71 is guided by the guide member 70. While the roller 92A is in contact with the guide portion 89C of the locking member 89 provided in the electronic component mounting apparatus main body 1, the roller 92A is rotated counterclockwise while the roller 92A is rotated in the first locking portion 89A. Will be locked.

  Reference numeral 93 denotes a lock cylinder that constitutes an operating member provided in the electronic component mounting apparatus main body 1. One end of a second lock member 95 that can be rotated about a support shaft 94 is biased by a spring 96 to the rod 93 </ b> A. Has been pressed. When the lock cylinder 93 is actuated and the rod 93A is extended, the second lock member 95 provided in the electronic component mounting apparatus body 1 is rotated counterclockwise, and the other end of the second lock member 95 is rotated. The lock lever 95 </ b> A is in contact with the second locking portion 89 </ b> B of the locking member 89 and restricts the rotation of the locking member 89 in the counterclockwise direction.

  The locking member 89 is provided corresponding to each component supply unit 6, but the locking cylinder 93 and the second lock member 95 are provided corresponding to a plurality of component supply units 6. Therefore, the lock lever 95 </ b> A extends in the direction in which the component supply units 6 are arranged.

  6 and 7, reference numeral 102 denotes a seam detection device for the storage tape C, which is provided on the attachment member 103 attached to the rear end portion of the component supply unit 6. The seam detection device 102 is a device main body 104 in which the light emitting element 102A and the light receiving element 102B are provided at a distance of 8 millimeters, a prism 105 is provided at the upper end, and the cross section has a U-shaped cross section. The section is composed of a passage forming body 107 provided with a tape passage opening 106 so that the storage tape C can pass therethrough.

  That is, as the storage tape C is fed, in the case of the seamless storage tape C, the light from the light emitting element 102A is recursively reflected by the prism 105 via the feed holes (opened at intervals of 4 millimeters) Cb. Since the light is received by the light receiving element 102B, the joint detection device 102 can detect the absence of a joint, and in the case of the storage tape C having a joint, the light from the light emitting element 102A covers the feed hole Cb in accordance with the feeding operation. And is not received by the light receiving element 102B, and the presence of a seam is detected (see FIGS. 8 and 9).

  The connecting tape 108A is for connecting the old storage tape C and the new storage tape C, which have a reduced number of electronic components together with the connection tapes 108B and 108C, and the portion where the connection tape 108A is affixed is a joint. It is.

  Next, a control block diagram of the electronic component mounting apparatus shown in FIG. 10 will be described. 110 is a CPU as a control unit that performs overall control of operations related to electronic component mounting of the electronic component mounting apparatus, 111 is a RAM (random access memory) as a storage device, and 112 is a ROM (read-only memory). ).

  The RAM 111 is mounted for each type of printed circuit board P such as X direction, Y direction and angle information in the printed circuit board P, and arrangement number information of each component supply unit 6 for each mounting order (for each step number). Data is stored, and information on the type (component ID) of each electronic component corresponding to the arrangement number (lane number) of each component supply unit 6, that is, component arrangement information, is stored for each type of electronic component. The recognition interval and the number of times of recognition of the storage portion (storage recess) Cc performed when detecting a seam described later are stored. In addition, as shown in FIG. 8, the RAM 111 includes a splicing seam zone (a seam zone) including a seam (a portion where the connecting tape 108 </ b> A is pasted) set in advance by an operator and storage tapes before and after the seam. ) Z dimension L1 (the old storage tape and the new storage tape are continuous before and after the splicing seam zone), before the seam in this splicing seam zone (the upstream part, hereinafter the upstream side) Zone L), the number of storage parts Cc located in this upstream zone (determined by dividing the dimension L2 by the pitch of the storage parts Cc), and the number of storage parts Cc located in the splicing seam zone (refer to FIG. This is obtained by dividing the dimension L1 by the pitch of the storage portion Cc). Component library data composed of items that represent the characteristics of the electronic component for each D are also stored.

  Based on the data stored in the RAM 111, the CPU 110 controls the operation related to the component mounting operation of the electronic component mounting apparatus according to the program stored in the ROM 112. That is, the CPU 110 rotates the X-axis drive motor 12X through the drive circuit 113, drives the Y-axis drive motor 12Y through the drive circuit 114, and rotates the suction nozzle 18 by θ through the drive circuit 115. The driving of the θ-axis motor 18A is controlled, and the driving of the vertical-axis motor 16A for moving the mounting head 16 up and down is further controlled via the drive circuit 116.

  A recognition processing device 117 is connected to the CPU 110 via the interface 118. The recognition processing device 117 performs recognition processing of an image captured by the component recognition camera 14 or the board recognition camera 17. The processing result is sent to the CPU 110. That is, the CPU 110 outputs an instruction to the recognition processing device 117 so as to perform recognition processing (calculation of misalignment amount, etc.) on the image captured by the component recognition camera 14 or the board recognition camera 17 and recognizes the recognition processing result. It is received from the device 117.

  That is, when the amount of positional deviation is grasped by the recognition processing of the recognition processing device 117, the result is sent to the CPU 110, and the CPU 110 detects the X axis drive motor 12X, the Y axis motor 12Y and the suction nozzle 18 of the XY stage 12. The θ-axis motor 18A is corrected and moved so that the electronic component is mounted on the printed circuit board P.

  The monitor 119A as a display device is provided with various touch panel switches 119B as input means for data setting. The operator can perform various settings by operating the touch panel switch 119B. Stored in 109A is a counter provided for each component supply unit 6, and counts the number of times of feeding of the storage tape C (the number of feed commands by the CPU 110) since the joint detection device 102 first detects the connecting tape 108A (seam). It should be noted that after the joint is detected by the joint detection device 102, the number of feeds required until the head of the splicing joint zone Z, that is, the component storage portion at the most upstream reaches the suction / extraction position of the electronic component is required N times. is there. The N times, which is the number of times, is the above-described tape that is obtained by subtracting the upstream zone dimension L2 (see FIG. 8) from the transport distance of the storage tape C from the joint detection position by the joint detection device 102 to the suction / removal position of the electronic component. It is the number of times divided by the feed pitch (the transport distance by one tape feed, for example, equal to the interval of each component storage unit Cc). A counter 109B is provided for each component supply unit 6 and counts the number of suction mistakes. The presence or absence of electronic components sucked and held by the suction nozzle 18 is detected by the line sensor 109C provided on the mounting head 16 or by component recognition processing. Then, the number of times that there is no continuous part or a suction failure state is counted. Although the counters 109A and 109B are provided for each component supply unit 6, only one is shown in FIG. 10 for convenience.

  A connector 130 is connected to the CPU 110 via an interface 118, and includes an electronic component mounting device side connector 130A and a component supply unit side connector 130B that can be attached to and detached from the electronic component mounting device side connector 130B. The servo motor 28 and the drive motor 42 are connected via 131. The connector 130, the drive circuit 131, the servo motor 28, and the drive motor 42 are provided for each component supply unit 6, but only one is shown in FIG. 10 for convenience.

  Next, electronic component suction and mounting operations will be described. First, the CPU 110 sends a command to the component supply unit 6 that supplies the electronic component having the first step number in the mounting order of the mounting data (data on which position on the printed circuit board, in which direction and which electronic component is mounted). The CPU 110 drives the servo motor 28 and the drive motor 42 of the component supply unit 6 to perform the component feeding operation and the cover tape Ca peeling operation.

  Thereafter, the CPU 110 determines whether the component supply unit 6 has been inserted or removed from the feeder base 19 regardless of the reason.

  That is, when an operator first operates an operation unit (not shown) of the electronic component mounting apparatus, the CPU 110 operates the lock cylinder 93 to pull in the rod 93A, and the second lock member 95 is used as the fulcrum 94 as a fulcrum. The lock lever 95A at the other end of the second lock member 95 is separated from the second lock portion 89B of the lock member 89, and the lock member 89 is rotated counterclockwise. Ready for Therefore, for example, when the operator puts the thumb on the rotatable unlocking lever 79 and puts another finger in the handle 77 and pulls the thumb, the unlocking lever 79 rotates clockwise with the support shaft 78 as a fulcrum. Then, the unlocking member 81 rotates clockwise, and the contact portion 81A pushes up the guide portion 89C of the locking member 89 against the urging force of the coil spring 90, and rotates the locking member 89 counterclockwise. Since the roller 92A is released from the first locking portion 89A (the locking is released), the operator pulls the component supply unit 6 in the forward direction with the handle 77, so that the guide member 70 is covered. The guide member 71 can move forward while being guided, and the component supply unit 6 can be removed from the feeder base 19. Then, the operator can attach the component supply unit 6 to the feeder base 19 by holding the handle 77 and moving the component supply unit 6 in the depth direction while the guided member 71 is guided by the guide member 70.

  At this time, when removing the component supply unit 6 from the feeder base 19, the electronic component mounting device side connector 130A and the component supply unit side connector 130B are disconnected, and when mounting the component supply unit 6 to the feeder base 19, the electronic component mounting is performed. The device-side connector 130A and the component supply unit-side connector 130B need to be coupled. However, since the CPU 110 constantly monitors the component supply unit 6, depending on the state of signals input from the component supply unit 6 via the interface 118 The CPU 110 can determine whether the component supply unit 6 has been inserted or removed from the feeder base 19.

  Accordingly, when the CPU 110 determines that the component is inserted and removed, the substrate recognition camera 14 is moved by driving the X-axis drive motor 12X and the Y-axis drive motor 12Y to the suction / removal position of the component supply unit 6 that has been removed and inserted, and the storage tape C is stored. The part Cc is imaged, and the recognition processing device 117 performs recognition processing. When this recognition process is performed, the size data of the storage unit Cc having a rectangular shape in plan view is stored in the RAM 111. Therefore, the edge of the storage unit Cc subjected to the recognition process and the electronic components stored in the storage unit Cc are included. In this case, since the size closest to the size data among the sizes of the edges of the electronic component is recognized as the component storage unit Cc, the storage unit Cc and the electronic component stored in the storage unit Cc can be distinguished.

  Then, based on the recognition processing result, the correction value is stored in the RAM 111, the X-axis drive motor 12X and the Y-axis drive motor 12Y are driven in consideration of the correction value, and then the vertical axis drive motor 16A is driven. Then, the suction nozzle 18 descends and picks up the electronic component.

  Further, it is determined whether or not the corresponding component supply unit 6 has been inserted / removed from / from the feeder base 19, and if it is determined that the component supply unit 6 has not been inserted / removed, the joint detection of the storage tape C is detected by the joint detection device 102, and then a feed command The CPU 110 determines whether the count value of the counter 109A, which is the number of times, reaches N times.

  Hereinafter, based on the flowchart of FIG. 11, an operation when sucking an electronic component, in particular, an operation when determining the suction state, that is, the presence / absence of the component when the electronic component is sucked by the suction nozzle will be described. .

  The suction nozzle 18 descends to the storage portion Cc of the storage tape C to perform a suction operation. After the suction nozzle 18 is lifted, an image is picked up by the component recognition camera 14 to recognize the presence / absence of electronic components, the suction posture, and the positional deviation with respect to the suction nozzle 18.

  Here, the image picked up by the component recognition camera 14 is captured and recognized by the recognition processing device 117, and the CPU 110 determines whether there is no component based on the recognition result. If there is a component, the CPU 110 clears the count of the continuous component absence counter in the lane on which the component supply unit 6 that supplies the component is placed, and continues the mounting operation to absorb the component. The mounting operation of the electronic component on the board is started.

  Further, when the CPU 110 determines whether there is no component based on the recognition result, if there is no component (see FIG. 12), the CPU 110 further selects the component supply unit 6 in the lane to which the electronic component is to be sucked. Whether or not the storage tape at the component extraction position (suction pocket position) is the splicing joint zone Z including the portion where the connecting tape 108A is affixed and the front and rear portions thereof, that is, the component extraction position at the component supply unit 6 It is determined whether or not the joint zone has reached.

  That is, the RAM 111 stores N times, which is the number of feeds from the detection of the seam by the seam detection device 102 until the splicing seam zone reaches the part removal position, and the splicing seam portion as described above. The number of feeds required for the splicing seam zone, which is equal to the number of the storage parts Cc located in the splicing seam zone, to pass through the part picking position, for example, the number obtained by dividing the length L1 of the zone Z by the pitch. M is stored, and the counter 109A counts the number of feeding times of the storage tape C after the joint detection device 102 first detects the connecting tape 108A (seam), and when the count is N times or more and less than N + M times, The CPU 110 has a splicing seam zone at the part removal position. Paid tape is determined to be a splice joint part zone.

  As described above, when the CPU 110 determines that the storage tape at the component removal position is the splicing joint zone, the CPU 110 moves the board recognition camera 17 above the component removal position (suction pocket position). The board recognition camera 17 captures an image of the storage unit Cc at the component removal position, and the recognition processing device 117 captures and recognizes the image. Based on the recognition result, the CPU 110 determines whether or not the storage unit Cc has an electronic component. to decide.

  At this time, there is an electronic component 150 in the storage unit Cc (see FIG. 13). When the CPU 110 determines that there is an electronic component in the storage unit Cc, the mounting operation is continued and the mounting operation of the adsorbed electronic component to the board is continued. To start.

  When the CPU 110 determines that there is no electronic component in the storage unit Cc (see FIG. 12), the CPU 110 outputs a storage tape feed signal to the target component supply unit 6, and the servo motor 28 of the component supply unit 6 In operation, the storage tape C is fed by one pitch, and at this time, the suction nozzle 18 does not perform the lifting / lowering operation, which is a component suction operation. Thereafter, again, the board recognition camera 17 captures an image of the storage unit Cc at the component removal position, and the recognition processing device 117 captures and recognizes the image. Based on the recognition result, the CPU 110 determines whether there is an electronic component in the storage unit Cc. Determine whether. When the CPU 110 determines that there is no electronic component in the storage unit Cc, the CPU 110 again outputs a storage tape feed signal to the target component supply unit 6, and the servo motor 28 of the component supply unit 6 operates to store the electronic component. Tape C is fed by one pitch.

  Thereafter, similarly, when it is determined that there is no electronic component in the storage portion Cc, the storage tape C is fed by one pitch, and when it is determined that there is an electronic component in the storage portion Cc, the suction nozzle 18 is sucked. The electronic component is mounted on the board.

  As described above, when the storage tape C at the component take-out position is the splicing joint zone, and the CPU 110 determines that there is no electronic component in the storage unit Cc, the suction nozzle 18 is not moved up and down as the component suction operation. The determination of the presence / absence of an electronic component in the storage unit Cc based on the pitch feed of the storage tape C and the imaging of the storage unit Cc at the component take-out position is performed until the CPU 110 determines that there is an electronic component in the storage unit Cc. That is, the electronic component is dropped at the joint and no electronic component is in the storage portion Cc, that is, the automatic feeding of the toothless storage portion Cc and the automatic head of the storage portion Cc at the top of the component loading with the storage tape to be added Since the take-out operation is performed, even when the storage tapes C are connected to each other by a connecting tape or the like, useless component suction operation (removal operation) to the empty storage portion Cc at the connection portion, that is, the joint is avoided. Thus, the operating rate of the apparatus can be maintained.

  Further, if there is no part in the suction nozzle 18 and the CPU 110 is in the splicing seam zone at the part take-out position (suction pocket position) in the part supply unit 6 of the lane where the electronic part is to be picked up, that is, the part When it is determined in the supply unit 6 whether or not the seam has reached the part removal position, if the storage tape at the part removal position is not in the splicing seam zone, the target part supply unit is placed. The counter 109B for counting the absence of continuous parts in the suction lane is incremented.

  Then, in the suction operation from the component supply unit placed in the same lane, when it is determined that there is no component for a predetermined number of times, for example, twice in succession, sounding by a buzzer or lighting of an unillustrated indicator light, etc. Is notified of the abnormality, and the electronic component mounting apparatus is stopped.

  When the joint detection unit 102 detects the joint, the electronic component in the component storage portion Cc on the most downstream side at the portion where the connecting tape 108A, which is the joint, is affixed, reaches the electronic component suction extraction position. As described above, the number of times of feeding is required N times, and this N times, the tip of the joint, that is, the tip on the upstream side of the connecting tape 108A passes through the suction take-out position, and is the same position (joint) as the connecting tape 108A. It is preferable to set the number of times slightly larger with a margin so that the storage portion Cc positioned on the upstream side of the storage tape C is surely positioned at the suction extraction position.

  In addition, after splicing is performed and the predetermined number of electronic components are supplied (to ensure that the new storage tape reaches the component take-out position, a slightly larger number than the predetermined number is supplied. As described above, the board recognition camera 17 is moved above the component take-out position (suction pocket position), and the board recognition camera 17 takes an image of the storage portion Cc at the part take-out position. Based on the recognition result by the device 117, the CPU 110 may determine whether or not there is an electronic component in the storage unit Cc.

  Further, a predetermined range before and after the connecting tape 108A passes through the suction extraction position, for example, a range of 20 mm before and after the connecting tape 108A (a range located on the left and right sides of the connecting tape 108A shown in FIG. When a splicing seam zone is set including the touch panel switch 119B and stored in the RAM 111, and it is determined that there is no part, the splicing seam zone has reached the part takeout position. As described above, when the CPU 110 determines that there is no electronic component in the storage unit Cc based on the recognition result obtained by the recognition processing device 117 by imaging the storage unit Cc at the component extraction position, the component by the suction nozzle 18 is used. You may make it perform the pitch feed of the storage tape C, without performing an adsorption | suction operation. Thus, when there are a large number of storage parts Cc where no parts are stored on the rear end side of the old storage tape, or there are storage parts Cc where no parts are stored on the front side of the new connected storage tape. Even when there are a large number, it is possible to avoid a wasteful component suction operation (removal operation) with respect to the empty storage portion Cc and maintain the operating rate of the apparatus.

  Further, as the electronic component mounting apparatus, a so-called multi-function chip mounter has been described as an example. However, the electronic component mounting apparatus is not limited to this and may be applied to a high-speed chip mounter such as a rotary table type.

  The component supply unit may be mounted on a cart that is detachably connected to the main body, and the feeder base may be provided on the cart.

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

It is a top view of an electronic component mounting apparatus. It is a side view of the component supply unit of the state fixed on the feeder base. It is a longitudinal cross-sectional view of the cover tape peeling mechanism of FIG. FIG. 3 is a diagram illustrating a relationship between a component supply unit and a feeder base, as viewed from an arrow X direction in FIG. 2. FIG. 3 is a cross-sectional view illustrating a relationship between a component supply unit and a feeder base at a position of a front left / right regulating pin in FIG. 2. It is a side view of a seam detection device. It is the figure which looked at the joint detection apparatus in FIG. 6 from the arrow direction. It is a top view of the storage tape containing the splicing seam part zone connected with the connection tape. It is a side view of the storage tape connected with the connection tape. It is a control block diagram. It is a flowchart figure. It is a figure of the taken-in image of the state without components in a storage part. It is a figure of the taken-in image of the state with components in a storage part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus main body 6 Component supply unit 14 Component recognition means (1st presence detection means)
17 Substrate recognition camera (second presence / absence detection means)
18 Suction nozzle 28 Servo motor 110 CPU
102 Seam Detection Device 108A Connecting Tape 109A, 109B Counter 110 CPU
111 RAM
117 Recognition processing device C Storage tape Cc Storage unit Z Splicing seam zone

Claims (2)

  A plurality of component supply units that supply electronic components stored in the storage portion of the storage tape to the component take-out portion by feeding operation of the storage tape are arranged side by side, and the suction nozzle receives the electronic components supplied from the component supply unit. In an electronic component mounting apparatus that is picked up by a pick-up unit and mounted on a printed circuit board, a first presence / absence detecting unit that detects the presence / absence of a component picked up by the pick-up nozzle, and an electron by the pick-up nozzle in the pick-up unit A second presence / absence detecting unit for detecting presence / absence of an electronic component in the storage unit before a component suction operation; a detecting unit for detecting a joint provided for each component supply unit and connecting the storage tapes; When the first presence / absence detecting means detects that no electronic component is present, the joint is detected by the detecting means, and a predetermined seam portion including the joint The component supply unit does not perform the suction operation of the electronic component by the suction nozzle when the second detection unit detects that there is no electronic component. An electronic component mounting apparatus, comprising: a control device that controls the feeding operation of the storage tape.   A plurality of component supply units that supply electronic components stored in the storage portion of the storage tape to the component take-out portion by feeding operation of the storage tape are arranged side by side, and the suction nozzle receives the electronic components supplied from the component supply unit. In an electronic component mounting apparatus that is picked up by a pick-up unit and mounted on a printed circuit board, a first presence / absence detecting unit that detects the presence / absence of a component picked up by the pick-up nozzle, and an electron by the pick-up nozzle in the pick-up unit A second presence / absence detecting unit for detecting presence / absence of an electronic component in the storage unit before a component suction operation; a detecting unit for detecting a joint provided for each component supply unit and connecting the storage tapes; When the first presence / absence detecting means detects that no electronic component is present, the joint is detected by the detecting means, and a predetermined seam portion including the joint The component supply unit does not perform the suction operation of the electronic component by the suction nozzle when the second detection unit detects that there is no electronic component. When the storage tape is controlled to feed, and the joint is not detected by the detection means, and it is determined that the predetermined joint zone including the joint has not reached the take-out portion. An electronic component mounting apparatus comprising: a control device that stops the mounting operation when the first presence / absence detecting means continuously detects that there is no electronic component for a predetermined number of times.

Images