JP4938607B2 - Component supply device and method for determining open state of suppressor in component supply device - Google Patents

Description

  The present invention relates to a component supply device for supplying a component to a component take-out position while a suppressor that can be opened and closed with a support shaft as a fulcrum and pressing and guiding a storage tape for storing the component from above to the device main body, and a suppressor in the component supply device It is related with the determination method of the open state of.

This type of component supply device is disclosed in, for example, Japanese Patent Application Laid-Open No. H10-260260. However, when a component breakage occurs, a new storage tape is opened to the component supply device with the suppressor opened with the support shaft as a fulcrum. Load it.
JP-A-2005-228847

  However, there may be a situation where an operator forgets to close the suppressor after a new storage tape is loaded. If the production operation is started with the suppressor kept open, there is a risk that intermittent feeding of parts may be hindered or the suction nozzle provided in the mounting head may collide with the suppressor when taking out the parts.

  Therefore, an object of the present invention is to make it possible to detect a state in which a suppressor is opened after a new storage tape is loaded so that production of a printed circuit board is not hindered.

For this reason, the first invention is a component supply device that supplies a component to a component take-out position while a suppressor that can be opened and closed with a support shaft as a fulcrum presses and guides a storage tape that stores the component from above to the device main body. A mark is attached to the upper surface of the apparatus main body that appears when the suppressor is opened.

According to a second aspect of the present invention, in the component supply apparatus, the suppressor, which can be opened and closed with the support shaft as a fulcrum, presses the storage tape for storing the component against the apparatus main body from above and guides the component to the component extraction position. A mark different from the mark on the upper surface of the suppressor is attached to the upper surface of the apparatus main body that appears when the suppressor is opened.

According to a third aspect of the present invention, there is provided a component supply device for opening a suppressor that supplies a component to a component pick-up position while a suppressor that can be opened and closed with a support shaft as a fulcrum presses and guides a storage tape for storing the component from above. In the state determination method, when the mark on the upper surface of the suppressor cannot be detected or when the mark on the upper surface of the apparatus main body can be detected, it is determined that the suppressor is open.

  The present invention can detect the state in which the suppressor is opened after the loading operation of a new storage tape so that the production of the printed circuit board is not hindered.

  Hereinafter, an electronic component mounting apparatus 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, and a front 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). In the component supply unit 5, a plurality of component supply units 6, which are electronic component supply devices, are incorporated side by side and detachably on the feeder base 19 to constitute an electronic component mounting device. The feeder base 19 may be simply fixed to the electronic component mounting apparatus main body 1 or may be attached to the electronic component mounting apparatus main body 1 in a detachable manner with a carriage.

  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 fixedly set at a predetermined height so as to receive mounting of electronic components on 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 portion 4 is provided with an XY stage 12 on which a head unit 13 is movably mounted, as well as a component recognition camera 14 and a nozzle stocker 15. Mounted on the head unit 13 are a mounting head 16 for attracting and mounting electronic components, and a substrate recognition camera 17 for recognizing the position of the printed circuit board P. Normally, the XY stages 12 and 12 of both the component mounting parts 4 and 4 are alternately operated.

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

  Each component supply unit 6, which is a dual lane feeder, is equipped with a storage tape that covers a large number of electronic components with cover tapes that are stored at regular intervals in each storage portion formed of a concave portion of the carrier tape. By feeding and peeling the cover tape from the carrier tape, the electronic components are supplied one by one to the component extraction position of the component supply unit 6 and are extracted from the respective storage units.

  Note that the component supply unit is not limited to an electronic component supply unit, but a label attached to the printed circuit board P, for example, a label on which a bar code indicating a substrate type is written is a storage tape that is a mount with a predetermined interval. It may be a component supply unit that is attached and intermittently feeds the storage tape, and the label in a partially peeled state from the storage tape is picked up by a suction nozzle at the pick-up position.

  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 raising the suction nozzle 18, the XY stage 12 is driven to move the electronic component to a position directly above the component recognition camera 14, and the suction posture and the positional deviation with respect to the suction nozzle 18 are recognized. 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 result by the component recognition camera 14 and the board recognition camera 17, The X-axis drive motor of the XY stage 12, the Y-axis motor and the θ-axis drive motor of the suction nozzle 18 are corrected and moved to mount the electronic component on the printed circuit board P.

  Next, the component supply unit 6 will be described with reference to FIG. The component supply unit 6 intermittently feeds the unit frame 21 and the storage tape, which is sequentially delivered in a state of being wound around a tape supply reel rotatably mounted on the unit frame 21, to the pickup position (suction extraction position) of the electronic component. And a cover tape peeling mechanism (not shown) for peeling the cover tape of the storage tape before the pickup position.

  The storage tape fed out from the tape supply 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 is provided with a pickup opening 23E. The suppressor 23 is formed with a slit 23D, and the cover tape of the storage tape is peeled off from the slit 23D and stored in the storage section. That is, the electronic component mounted on the storage tape is sent to the pickup opening 23E with the cover tape peeled off, and is picked up by the suction nozzle 18.

  Next, the tape feeding mechanism 22 will be described. 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 in the storage tape and having a rotary shaft 33 rotatably supported by a support 31 via a bearing 32 and a worm wheel 35 meshing with a worm gear 34 provided in an intermediate portion of the rotary shaft 33. And a sprocket 36 which is engaged with each other and sends the same. The worm wheel 35 and the support shaft 37 of the sprocket 36 pass through the intermediate partition of the unit frame 21.

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

  The suppressor 23 has a generally U-shaped cross section from a vertical piece 23A serving as a support portion and a horizontal piece 23B that holds the storage tape meshed with the teeth of the sprocket 36 so as not to come off. When the engagement is released and the engagement is released, the vertical piece 23A is rotatably supported with the pin 43 at the rear as a fulcrum.

  That is, a swinging piece 42 that can be swung in a clockwise direction by a spring 40 that is a biasing body supported at the lower end of the frame 21 via a support shaft 41 supported by the frame 21 and can be swung. The swing piece 42 is connected to the vertical piece 23A of the suppressor 23 via a pin 43 so as to be swingable. Therefore, when the front part of the suppressor 23 is locked, the swing piece 42 swings clockwise through the support shaft 41 by the biasing force of the spring 40, and the suppressor 23 swings clockwise. The rear portion of the suppressor 23 (the right portion in FIG. 3) is swung clockwise via the support shaft 41, that is, urged downward, so that the storage tape in which the feed hole is engaged with the teeth of the sprocket 36 cannot be removed Press like so.

  Then, a torsion spring 39 is wound around the pin 43, and one end 39A (the right end in FIG. 4 is bent to the near side) is formed at the rear end of the vertical piece 23A of the suppressor 23. 23C is locked from below, and the other end (the left end in FIG. 4) is housed in a recess formed in the swing piece 42 and locked to the swing piece 42, thereby closing the suppressor 23 (FIG. 2). (Counterclockwise).

  Further, at the front end portion of the component supply unit 6, the spring 50 whose rear end is supported by the frame 21 is urged and swung clockwise by a support shaft 51 supported by the frame 21. An oscillating piece 52 is provided, and the oscillating piece 52 and an engaging piece 53 having an engaging pin 55 at the upper end are rotatably connected via a pin 54 and wound around the pin 54. One end of the torsion spring (not shown) is engaged with the engagement piece 53 and the other end is engaged with the support shaft 51, and the engagement piece 53 is urged to rotate counterclockwise by the torsion spring. Yes.

  Since the spring 50 urges the swinging piece 52 to rotate clockwise, the locking piece 53 is urged downward, and the front end of the vertical piece 23A of the suppressor 23 is applied to the locking pin 55. When the locking portion 56 is locked, the front portion (left portion in FIG. 2) of the suppressor 23 is biased downward, and the entire suppressor 23 is biased downward at both the front and rear portions together with the rear portion described above. When the operator presses the swing piece 52 against the urging force of the spring 50, the swing piece 52 swings counterclockwise about the support shaft 51 and the locking piece 53 moves obliquely upward. Thus, the locking of the locking pin 55 and the locking portion 56 is released, and the suppressor 23 swings clockwise via the pin 43 by the urging force of the spring 40. In this way, by opening the suppressor 23, it becomes easy to load the storage tape into the component supply unit 6.

  That is, when the suppressor 23 is simply opened, the suppressor 23 swings in the closing direction due to the urging force of the torsion spring 39. Therefore, after releasing the locking of the locking pin 55 and the locking portion 56, the operator It is necessary to swing 23 in the opening direction. When the suppressor 23 is swung in the opening direction, the suppressor 23 presses the rear end of the plate spring 44 fixed to the unit frame 21 via the screw 38, and the rear portion of the plate spring 44 is swung (see FIG. 4). ), When the suppressor 23 is further swung in the opening direction, the suppressor 23 is generally in a vertical state, and the rear end portion of the suppressor 23 is fixed to the locking portion 44A formed by bending the rear end portion of the leaf spring 44. The suppressor 23 is locked and held (locked) in an open state, so that the storage tape can be easily loaded into the component supply unit 6.

  As described above, the loading frame formed on the unit frame 21 from the side of the component supply unit 6 in a state where the suppressor 23 serving as a peeling fulcrum of the cover tape of the storage tape is pivoted upward and held. The storage tape can be loaded into the component supply unit 6 through the opening.

  As shown in FIG. 3, an open / close detection label 60 with a circular mark M is affixed to the upper surface of each openable suppressor 23. After loading the new storage tape into the parts supply unit 6, there may occur a situation where the operator forgets to close the suppressor 23. However, if the production operation is started with the open, the parts may be intermittently fed. Or the suction nozzle 18 provided in the mounting head 16 may collide with the suppressor 23 during movement when the parts are taken out. Therefore, a label 60 for detecting opening / closing of the suppressor 23 is attached to the upper surface of the suppressor 23.

  With the above configuration, the mounting operation of the electronic component on the printed circuit board P will be described. First, the printed circuit board P is supplied from the supply conveyor 9 to the set table 8 and is positioned and fixed by the set table 8. Then, according to the mounting data, the XY stage 12 is driven so that the head unit 13 faces the component supply unit 6, and then the suction nozzle 18 provided on the mounting head 16 is lowered to move a desired electronic component to the component supply unit 6. Pick up (take out) more.

  In this case, the control device sends a feed command to the component supply unit 6 that supplies the electronic component of the first step number in the mounting order according to the mounting data, and the control device controls the servo motor 28 and the cover tape peeling mechanism of the component supply unit 6. The electronic tape is fed to the pickup position so that the storage tape is under the suppressor 23, and the storage tape is moved through the pickup opening 23E of the suppressor 23. It is picked up by the suction nozzle 18.

  Subsequently, after the mounting head 16 is raised, the XY stage 12 is driven to move the electronic component to a position immediately above the component recognition camera 14 and image the electronic component sucked and held by 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 board recognition camera 17 images the position recognition mark of the printed board P, the component recognition camera 14 and the board recognition camera 17 take an image. Based on the result of recognition processing by the recognition processing device, the X-axis drive motor of the XY stage 12, the Y-axis drive motor, and the θ-axis drive motor of the suction nozzle 18 are corrected and moved to drive the vertical axis drive motor. Thus, the suction nozzle 18 is lowered to mount the electronic component on the printed circuit board P.

  Here, when the remaining amount of the electronic component is reduced and the storage tape is loaded into the component supply unit 6, the operator stops the operation of the electronic component mounting device, and the handle and the lock release lever of the component supply unit 6 are stopped. The lock release lever is swung to release the lock mechanism, and the operator holds the handle and moves the component supply unit 6 along the feeder base 19 in the pull-out direction.

  When the operator presses the swing piece 52 against the urging force of the spring 50, the swing piece 52 swings counterclockwise about the support shaft 51 and the locking piece 53 moves obliquely upward. Thus, the locking of the locking pin 55 and the locking portion 56 is released, and the suppressor 23 is slightly swung clockwise through the pin 43 by the urging force of the spring 40. Then, when the suppressor 23 is swung in the opening direction, the suppressor 23 presses the rear end of the plate spring 44 fixed to the unit frame 21 via the screw 38 to swing the rear portion of the plate spring 44, and the suppressor 23 is moved. When it is further swung in the opening direction, the rear end portion of the suppressor 23 is locked to the locking portion 44A formed at the rear end portion of the leaf spring 44, so that the suppressor 23 becomes vertical and is held in an open state. The storage tape is loaded into the component supply unit 6.

  Then, after the storage tape is loaded into the component supply unit 6, when the operator presses the suppressor 23 and swings it counterclockwise, the leaf spring 44 is swung downward to engage the locking portion 44 </ b> A of the leaf spring 44. And the rear end of the suppressor 23 are released. At this time, the suppressor 23 swings in the closing direction automatically by the weight and the urging force of the torsion spring 39 even if the operator does not continue to press the suppressor 23 downward.

  Further, when the operator presses the suppressor 23 from above, the engaging portion 56 of the vertical piece 23A of the suppressor 23 is engaged with the engaging pin 55, and the suppressor 23 is kept closed and locked. The Thereafter, when the operator holds the handle 60 and moves it in the depth direction along the feeder base 19, the component supply unit 6 can be attached to the feeder base 19.

  Then, when the production operation of the printed circuit board P is resumed, the beam 12A is moved in the Y direction by the Y-axis drive motor, the head unit 13 is moved in the X direction by the X-axis drive motor, and the head units 13 are arranged in parallel. After moving above the label 60 of the suppressor 23 of the component supply unit 6 at one end of the component supply unit 6 group, the component supply unit 6 group stops by moving by a predetermined pitch in the X direction, that is, in the parallel arrangement direction of the component supply unit 6 group. However, the board recognition camera 17 images the label 60 attached to the suppressor 23 of each component supply unit 6.

  The recognition processing device recognizes the captured image, and the control device determines whether the suppressor 23 is closed based on the recognition processing result. That is, if the suppressor 23 is closed, the presence of the mark M attached to the label 60 can be confirmed. If the suppressor 23 is opened, the presence of the mark M cannot be confirmed because the mark M does not exist in the imaging field of view. .

  Here, when the control device determines that the suppressor 23 is open, the operation is stopped and the notification device notifies the user visually and / or audibly. Therefore, the operator understands that the suppressor 23 is open and can restart the operation after closing.

  Therefore, it is possible to prevent the suction nozzle 18 that is moving when taking out the electronic component from interfering with the suppressor 23 and to prevent the suppressor 23 from affecting the production operation. In addition to loading the storage tape to the component supply unit due to the decrease in the remaining number of electronic components, the same applies when loading a new storage tape to the component supply unit, for example, due to switching of the production model of the printed circuit board. Advantageous effects can be obtained.

  The label 60 with the mark M is attached to the upper surface of the suppressor 23. However, the present invention is not limited to this, and the unit frame 21 is not the suppressor 23 but a unit main body positioned below the closed suppressor 23 that guides the storage tape. A label 60 may be attached to the upper surface, that is, the upper surface of the unit frame 21 that appears when the suppressor is opened. When the label 60 is recognized, it is determined that the suppressor 23 is open. Furthermore, the suppressor 23 can be made different in shape (such as those having different shapes and sizes) from the mark of the label 60 attached to the upper surface of the suppressor 23 and the mark of the label 60 attached to the unit frame 21. Whether or not 23 is open can be detected.

  Further, the mark described above may be drawn on a label, or may be drawn directly on the upper surface of the suppressor 23 or the upper surface of the unit frame 21.

  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 partial side view of the component supply unit in a state where the suppressor is closed. It is a fragmentary top view of a component supply unit. It is a partial side view of the component supply unit in a state where the suppressor is opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus main body 6 Component supply unit 13 Head unit 17 Board | substrate recognition camera 21 Unit frame 23 Suppressor 60 Label M mark

Claims (3)

  An apparatus main body that appears when the suppressor is opened in a component supply apparatus that supplies a component to a component take-out position while a suppressor that can be opened and closed with a support shaft as a fulcrum presses and guides a storage tape that stores the component from above to the apparatus main body A component supply device having a mark on the upper surface.   In a component supply device that supplies a component to a component take-out position while a suppressor that is openable and closable with a support shaft as a fulcrum and pressing and guiding a storage tape for storing the component from above to the apparatus main body, a mark is attached to the upper surface of the suppressor In addition, the component supply apparatus is characterized in that a mark different from the mark on the upper surface of the suppressor is attached to the upper surface of the apparatus main body that appears when the suppressor is opened.   In the method of determining the open state of the suppressor in the component supply device that supplies the component to the component take-out position while the suppressor that can be opened and closed with the support shaft as a fulcrum is guided to the device main body while holding the storage tape for storing the component from above. A method for determining an open state of a suppressor in a component supply apparatus, wherein the suppressor is determined to be open when the mark on the upper surface of the suppressor cannot be detected or when the mark on the upper surface of the apparatus main body can be detected.