JP2006237427A - Part supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a part supply device dealing with two or more sorts of storage tapes different in width. <P>SOLUTION: In the case of treating the storage tape Cc of the width 44 mm, a bolt 49 is loosened, in accordance with the width of this storage tape Cc, a guide wall 48 and a sprocket 36B are made to move along with a spindle 37 and a pin in the direction of a sprocket 36A of another side, and then a bolt 49 is fastened. In this case, above the sprocket 36B, there is nothing to hold down the storage tape Cc which engages the feeding holes geared for the teeth of the sprocket 36B for preventing the storage tape Cc from being separated. A holddown piece fixed to a side board 46 is thereby removed by removing a screw. On a horizontal piece 23B of a suppressor 23, the holddown piece is fixed by a screw via a screw hole. Then, the storage tape Cc wherein the feeding holes are engaded with the teeth of the sprocket 36B, cannot come out by the holddown piece. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  According to the present invention, a sprocket having a feed dog fitted into a feed hole of a carrier tape is used as a support shaft after a cover tape of a storage tape formed by a component storage section storing electronic components at a predetermined interval is peeled off. The present invention relates to a component supply device that supplies an electronic component stored in the component storage unit to a component extraction position by rotating as a fulcrum.

This type of component supply apparatus is disclosed in Patent Document 1, for example. According to this component supply device, the guide wall and the sprocket are provided to regulate and guide the width direction of the storage tape according to the width of the storage tape that stores the electronic component.
JP 2004-119680 A

  However, the guide wall and the sprocket are fixed at predetermined positions and cannot move in the width direction of the storage tape, and it has been impossible to handle a plurality of types of storage tapes having different widths.

  Then, an object of this invention is to provide the components supply apparatus which can handle the multiple types of storage tape from which width differs.

  Therefore, according to the first aspect of the present invention, a sprocket having a feed dog fitted to a feed hole of a carrier tape after peeling a cover tape of a storage tape in which a component storage section for storing an electronic component is formed at a predetermined interval. In the component supply device for supplying the electronic component stored in the component storage portion to the component pick-up position by rotating around the support shaft, the sprocket is moved in the width direction of the storage tape guided by the support shaft. It is possible and can be fixed to a frame that supports the support shaft.

  According to a second aspect of the present invention, there is provided a sprocket having a feed dog fitted in a feed hole of a carrier tape after a cover tape of a storage tape having a component storage section for storing an electronic component is formed at a predetermined interval. In a component supply apparatus for supplying an electronic component stored in the component storage unit to a component pick-up position by rotating about a shaft as a fulcrum, the guide is guided by the support shaft to regulate the width direction of the storage tape. The wall is movable in the width direction of the storage tape and can be fixed to a frame that supports the support shaft.

  According to a third aspect of the present invention, there is provided a sprocket having a feed dog fitted into a feed hole of a carrier tape after a cover tape of a storage tape having a component storage section for storing an electronic component is formed at a predetermined interval. In a component supply apparatus for supplying an electronic component stored in the component storage unit to a component pick-up position by rotating about a shaft as a fulcrum, the guide is guided by the support shaft to regulate the width direction of the storage tape. The wall is movable in the width direction of the storage tape together with the sprocket, and can be fixed to a frame that supports the support shaft.

  According to a fourth invention, in the first or third invention, when a pair of the sprockets are provided and one of the sprockets is moved in accordance with the width of the wide storage tape, the teeth of the pair of sprockets are brought into the feed holes. When the suppressor is pressed so that the storage tape does not come off when it is meshed and one sprocket is moved to fit the width of the narrow storage tape, the teeth of one sprocket that does not move mesh with the feed hole and the storage tape The suppressor is pressed so that it does not come off, and the holding member holds down so that the tooth of the other sprocket that has been moved meshes with the feed hole and the storage tape does not come off.

  A fifth invention is characterized in that, in the fourth invention, the pressing member is detachably provided in the supply device main body.

  According to a sixth invention, in the second invention, when the guide wall is moved in accordance with the width of the wide storage tape, the guide wall side of the storage tape and the side where the teeth of the sprocket mesh with the feed hole When the guide wall is moved in accordance with the width of the narrow storage tape, the suppressor presses both of the sprocket teeth so that the non-moving sprocket teeth mesh with the feed holes so that the storage tape does not come off. The suppressor presses and moves the side of the storage tape that is pressed and moved by the suppressor.

  The present invention provides a guide wall that regulates and guides the width direction of the storage tape according to the width of the storage tape to be handled, and a plurality of types of storage tapes having different widths by moving the sprocket in the width direction of the storage tape. Can handle.

  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 multifunctional chip mounter that is a so-called high-speed gantry mounting apparatus, 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). 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 so as to receive the mounting of the electronic component Dd by the set table 8. Then, the printed circuit board P on which the mounting of the electronic component Dd 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. The head unit 13 is equipped with two mounting heads 16 and 16 for sucking and mounting the electronic component Dd, and one 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. .

  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 is equipped with a storage tape Cc, which will be described later, in which a large number of electronic components Dd are stored in each storage portion of the carrier tape at regular intervals. By supplying the storage tape Cc intermittently, component supply is possible. The electronic components Dd are supplied one by one from the tip of the unit 6 to the component mounting portion 4.

  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 result by the component recognition camera 14 and the board recognition camera 17, The X-axis drive motor, the Y-axis motor of the XY stage 12 and the θ-axis 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 FIGS. This component supply unit 6 includes a unit frame 21 and a storage tape Cc that is sequentially drawn out in a state of being wound around a storage tape reel mounted on a cart (not shown). And a cover tape peeling mechanism (not shown) for peeling the cover tape Ca of the storage tape Cc from the carrier tape before the pickup position.

  The storage tape Cc fed out from the storage tape reel is sent to the component extraction position so as to lie under the suppressor 23. The suppressor 23 has an opening 24 for pickup by the suction nozzle 18. A slit 25 is formed in the suppressor 23, and the cover tape Ca of the storage tape Cc is peeled off from the slit 25 and stored in the storage portion 26. That is, the electronic component mounted on the storage tape Cc is sent to the pickup position (component extraction position) with the cover tape Ca peeled off, and is picked up by the suction nozzle 18 through the pickup opening 24. Become.

  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 a storage tape Cc, which includes 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 at an intermediate portion of the rotary shaft 33. The sprockets 36A and 36B are configured to mesh with holes and send them. The worm wheel 35 and the support shafts 37 of the sprockets 36A and 36B pass through the unit frame 21.

  Therefore, when the servo motor 28 is driven to rotate in order to supply the electronic components in the storage tape Cc in the component supply unit 6, the gear 27 and the gear 30 are rotated via the timing belt 29, so that only the rotation shaft 33 is obtained. The sprockets 36A and 36B rotate through the worm gear 34 and the worm wheel 35 and rotate intermittently at a predetermined angle in the feed direction through the bearings 39A and 39B with the support shaft 37 as a fulcrum. Is intermittently fed. In this case, the slidable contact portions 38A and 38B fixed around the support shaft 37 rotate while slidingly contacting the inner surfaces of the bearings 39A and 39B, and the sprockets 36A and 36B rotate intermittently by a predetermined angle.

  That is, the fixing plate 41B to which the sprocket 36B is fixed is fixed to the sliding contact portion 38B fixed around the support shaft 37 by the bolt 44, and the fixing plate 41A to which the sprocket 36A is fixed is fixed to the support by the bolt 44. The sliding contact portions 38A and 38B are fixed to a sliding contact portion 38A fixed around the shaft 37, and the sliding contact portions 38A and 38B rotate while sliding on the inner surfaces of the bearings 39A and 39B together with the support shaft 37, and the sprockets 36A and 36B rotate intermittently by a predetermined angle. .

  Further, 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 Cc engaged with the teeth of the sprockets 36A and 36B so as not to come off. Yes. The suppressor 23 is rotatably provided on the unit frame 21 via a rear pin 40 and is urged so that a locking groove 23C provided at the front end of the vertical piece 23A is locked by a spring. The above-mentioned operation is ensured by engaging with the engaging pin 43 of the engaging member 42.

  The support shaft 37 and the pin 40 pass through a guide wall 48 in which the sprocket 36B is rotatably provided and regulates and guides the width direction of the storage tape Cc. The guide wall 48 and the sprocket 36B are disposed so as to be movable in the width direction of the storage tape Cc.

  In such a state, the side plate 46 is fixed to the unit frame 21 by a plurality of bolts 45 at a predetermined interval via a spacer 47 at the front end portion of the unit frame 21.

  The bottom plate portion 48A of the guide wall 48 and the bottom plate portion 21A of the unit frame 21 are fixed by bolts 49. That is, a recess 21B is formed on the bottom surface of the bottom plate portion 21A of the unit frame 21, and a long hole 21C is formed on the surface forming the recess 21B. As described above, the guide wall 48 and sprocket 36B are Although it can move in the width direction of the storage tape Cc, the bottom plate portion 48A of the guide wall 48 and the bottom plate portion 21A of the unit frame 21 can be fixed by a bolt 49 in any state before and after the movement. In this case, the side surface of the fixed plate 41B hits the inner surface of the bearing 60, the portion of the guide wall 48 on the support shaft 37 side is positioned, and each sprocket interval can be set to a set value. Then, the outer surface of the guide wall 48 hits the inner surface of the side plate 46 and is positioned.

  Note that the feed holes opened at predetermined pitches in the storage tape are provided at both ends in the width direction. When the width of the storage tape is 56 mm, for example, some of the teeth of the sprockets 36A and 36B In the case of 44 mm, the bolt 49 is loosened, the guide wall 48 and the sprocket 36B are moved in the direction of the other sprocket 36A, and the bolt 49 is tightened again. In this case, there is no need to hold the storage tape Cc above the sprocket 36B so that the storage tape Cc meshed with the teeth of the sprocket 36B does not come off. Therefore, in a state where the holding piece 52 having the opening 51 is accommodated in the recess 46A of the side plate 46, the holding piece 52 is fixed to the side plate 46 by the screw 53. By fixing the pressing piece 52 with the screw 53 via the screw hole 54 on the horizontal piece 23B, the pressing piece 52 can be pressed so that the storage tape Cc engaged with the teeth of the sprocket 36B does not come off. .

  With the above configuration, the width of the storage tape Cc used for the component supply unit 6 is 56 mm, and the guide wall 48 and the sprocket 36B are far away from the unit frame 21 and the sprocket 36A as shown in FIGS. The mounting operation of the electronic component Dd of the electronic component mounting apparatus will be described below.

  First, the control device (not shown) of the electronic component mounting apparatus main body 1 follows the mounting data stored in the storage device (data on which electronic component is mounted in which position on which direction on the printed circuit board). The tape feeding mechanism 22 of the corresponding predetermined component supply unit 6 is driven to intermittently feed the storage tape Cc that stores the predetermined electronic component once. That is, when the servo motor 28 is driven to rotate forward, the gear 27 and the gear 30 are rotated to rotate the rotating shaft 33, and the sprockets 36A and 36B are intermittently moved by a predetermined angle in the feed direction via the worm gear 34 and the worm wheel 35. By rotating, the storage tape Cc is intermittently fed through the feed hole.

  When this tape feed mechanism 22 is driven, the cover tape peeling mechanism peels (peels) the cover tape for one intermittent feed in synchronism with this. Subsequently, when the tape feeding mechanism 22 and the cover tape peeling mechanism are stopped, the electronic component Dd sent to the component takeout position is stopped. Then, the electronic component Dd is picked up through the pickup opening 24 by the suction nozzle 18, and the next intermittent feeding of the storage tape Cc and the peeling of the cover tape Ca are performed again.

  The electronic component Dd sucked and held by the suction nozzle 18 is mounted on the printed circuit board P, but the details are omitted here.

  In this way, the feeding operation and the taking-out operation of the electronic components are performed, but the storage tape Cc enters the lower side of the suppressor 23 and the sprocket 36A, 36B teeth are engaged with the feeding hole of the storage tape Cc. The suppressor 23 can hold down so that a part of the teeth of 36A and 36B face the openings 50A and 50B and do not come off.

  Next, as shown in FIGS. 7 to 9, when handling a tape having a storage tape Cc width of 44 mm, the bolt 49 is loosened, and the guide wall 48 and sprocket 36B are adjusted in accordance with the width of the storage tape Cc. Is moved along the support shaft 37 and the pin 40 in the direction of the other sprocket 36A, and the bolt 49 is tightened. In this case, at the portion of the guide wall 48 on the support shaft 37 side, the inner end surface of the sliding contact portion 38B hits the inner end surface of the slide contact portion 38A, and the portion of the guide wall 48 on the support shaft 37 side is positioned, and each sprocket spacing is increased. The set value can be set, and on the pin 40 side, the guide wall 48 hits the inner projecting portion 21A of the unit frame 41 and is positioned. However, the opening 24 is positioned above the sprocket 36B, and there is no need to hold down the storage tape Cc in which the feed hole meshes with the teeth of the sprocket 36B.

  Therefore, by removing the screw 53, the pressing piece 52 fixed to the side plate 46 is removed, and the pressing piece 52 is fixed on the horizontal piece 23B of the suppressor 23 by the screw 53 via the screw hole 54, thereby the sprocket 36B. The holding piece 52 can be pressed so that the storage tape Cc in which the feed hole is meshed with the teeth of the tooth is not removed.

  Further, one type of component supply unit 6 can handle different types of storage tapes having different tape widths, and as a result, an increase in the type (model) of the component supply unit 6 can be suppressed. Further, the operator can easily cope with the change of the tape width. For example, when switching from supply using a wide storage tape to supply using a narrow storage tape, it is not necessary to prepare another component supply unit, and only replacement of the storage tape is required.

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

  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 a component supply unit. It is CC sectional drawing of FIG. It is a principal part top view of the components supply unit in the case of handling the storage tape with a width of 56 mm. It is AA sectional drawing of FIG. 2 in the case of handling the storage tape whose width is 56 mm. It is BB sectional drawing of FIG. 2 in the case of handling the storage tape whose width is 56 mm. It is a principal part top view of the components supply unit in the case of handling the storage tape with a width of 44 mm. It is AA sectional drawing of FIG. 2 in the case of handling the storage tape whose width is 44 mm. It is BB sectional drawing of FIG. 2 in the case of handling the storage tape whose width is 44 mm.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus main body 6 Component supply unit 21 Unit frame 23 Suppressor 36A, 36B Sprocket 37 Support shaft 40 Pin 48 Guide wall 52 Holding piece

Claims (6)

  After the component storage section for storing the electronic components peels off the cover tape of the storage tape formed at a predetermined interval, the sprocket having the feed dog fitted in the feed hole of the carrier tape rotates around the support shaft. Accordingly, in the component supply apparatus that supplies the electronic component stored in the component storage unit to the component take-out position, the sprocket is guided by the support shaft and is movable in the width direction of the storage tape and supports the support shaft. A component supply device that can be fixed to a frame.   After the component storage section for storing the electronic components peels off the cover tape of the storage tape formed at a predetermined interval, the sprocket having the feed dog fitted in the feed hole of the carrier tape rotates around the support shaft. Thus, in the component supply apparatus that supplies the electronic component stored in the component storage unit to the component take-out position, a guide wall that is guided by the support shaft and regulates the width direction of the storage tape is provided on the storage tape. A component supply device that is movable in the width direction and can be fixed to a frame that supports the support shaft.   After the component storage section for storing the electronic components peels off the cover tape of the storage tape formed at a predetermined interval, the sprocket having the feed dog fitted in the feed hole of the carrier tape rotates around the support shaft. Thus, in the component supply apparatus that supplies the electronic component stored in the component storage unit to the component take-out position, a guide wall that is guided by the support shaft to regulate and guide the width direction of the storage tape together with the sprocket is provided. A component supply device that is movable in the width direction of a storage tape and can be fixed to a frame that supports the support shaft.   A pair of sprockets is provided, and when one sprocket is moved according to the width of the wide storage tape, the suppressor presses and holds the storage tape so that the teeth of the pair of sprockets engage with the feed holes and the storage tape does not come off. When one of the sprockets is moved in accordance with the width of the storage tape, the suppressor presses and moves the other sprocket so that the teeth of the one sprocket that does not move engage with the feed hole and the storage tape does not come off. The component supply device according to claim 1, wherein the pressing member presses the housing tape so that the teeth do not engage with the feed hole and the storage tape does not come off.   The component supply device according to claim 4, wherein the pressing member is detachably provided on the supply device main body.   When the guide wall is moved according to the width of the wide storage tape, the suppressor presses both the guide wall side of the storage tape and the side where the teeth of the sprocket mesh with the feed hole, and the narrow storage When the guide wall is moved in accordance with the width of the tape, the side of the storage tape on which the suppressor is pressed and moved so that the teeth of the sprocket on the non-moving side mesh with the feed hole and the storage tape does not come off. The component supply device according to claim 2, wherein a pressing member presses the portion.

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