JP2010080805A - Component supplying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an electronic component from being entered into and engaged with the inside of a driving mechanism for rotating sprockets. <P>SOLUTION: An approximately annular first protection cover 60 is arranged between both sprockets 36. The first protection cover 60 is roughly composed of a large upper cover body 60A and a small lower cover body 60B, and an annular shape having a hollowed inside and a circular outer shape having a fixed width is formed by both the upper and lower cover bodies 60A, 60B. Each insertion part 60A2 of the upper cover body 60A of the first protection cover 60 is inserted into grooves 36A, 36B so that a slight gap exists between the outside surface of each insertion part 60A2 and an outer wall forming the grooves 36A, 36B and each insertion part 60B2 of the lower cover body 60B is similarly inserted into the grooves 36A, 36B so that a slight gap exists between the outside surface of each insertion part 60B2 and an outer wall forming the groove 36A, 36B. Further, the upper cover body 60A and the lower cover body 60B surround a rotary shaft 33 with a slight gap through guide grooves 66, 67. <P>COPYRIGHT: (C)2010,JPO&INPIT

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 for supplying an electronic component stored in the component storage unit to a component pick-up position by rotating as a fulcrum, and two storage units in which the component storage unit for storing the electronic component is formed at a predetermined interval After the tape cover tape is peeled off, the two sprockets having feed teeth fitted in the feed holes of the carrier tapes are separately housed in the component housing part by rotating separately with the support shaft as a fulcrum. The present invention relates to a dual lane feeder type component supply device that supplies electronic components.

This type of component supply device is disclosed in, for example, Japanese Patent Application Laid-Open No. H10-228707. For example, a feed dog meshes with a feed hole formed in a storage tape, and the storage tape is intermittently fed by a sprocket that rotates about a support shaft. However, sometimes electronic parts, especially minute electronic parts, fall and bite into the drive mechanism for rotating the sprocket, and when the storage tape is paper tape, the fluff smoothly rotates the sprocket. This oil may get dirty and adhere to the oil. For this reason, in a single lane feeder that intermittently feeds one storage tape using a single drive source so that the electronic components do not fall down or enter the fluff, there is a slight gap between the sprocket and the feeder body. In the dual lane feeder where the cover is provided with a gap and the two storage tapes are separately intermittently fed using two drive sources, the cover is provided with a slight gap between the two sprockets. Was placed and protected.
JP-A-2005-228847

  However, since the amount of change in the thrust direction with respect to the support shaft of the sprocket is large, it is difficult to manage the gap between the cover and the rotating sprocket, and the gap must be made large. There was concern that it would still fall into the drive mechanism for spinning the sprocket.

  Therefore, the present invention makes it easy to manage the gap between the cover and the rotating sprocket, so that electronic parts can enter and bite into the drive mechanism for rotating the sprocket, or in the case of a paper tape storage tape. The purpose of this is to prevent the fuzz from contaminating the oil for smoothly rotating the support shaft of the sprocket.

  For this reason, according to the first aspect of the present invention, a sprocket having a feed dog fitted in a feed hole of a storage tape in which a component storage portion for storing an electronic component is formed at a predetermined interval rotates around a support shaft as a fulcrum. In the component supply apparatus that supplies the electronic component stored in the component storage unit to the component take-out position, a groove is formed concentrically with the rotation center on the side surface of the sprocket, and an outer peripheral edge portion between the sprocket and the feeder body An annular protective cover is provided that is fixed to the feeder body in a state where the insertion portion formed in is inserted in the groove with a slight gap.

  According to a second aspect of the present invention, two sprockets having feed teeth fitted to feed holes of two storage tapes in which electronic component storage parts are formed at predetermined intervals are separated from each other with a support shaft as a fulcrum. In the dual lane feeder type component supply device that supplies the electronic components stored in the component storage unit to the component pick-up position by rotating in the same direction, concentric with the rotation center on the opposite side surfaces of the two sprockets, respectively. A groove is formed, and an annular protective cover is provided to be fixed to the feeder body in a state where each insertion portion formed on the outer peripheral edge between both sprockets is inserted in each groove with a slight gap. It is characterized by that.

  According to a third aspect of the present invention, a sprocket having a feed dog fitted in a feed hole of a storage tape in which a component storage portion for storing an electronic component is formed at a predetermined interval rotates with a support shaft as a fulcrum. In the component supply apparatus for supplying the electronic component stored in the component storage portion to a position, a protective cover is disposed around the drive mechanism of the sprocket.

  According to a fourth aspect of the present invention, two sprockets having feed teeth fitted to feed holes of two storage tapes in which electronic component storage parts are formed at predetermined intervals are separated from each other with a support shaft as a fulcrum. In the dual lane feeder type component supply device that respectively supplies the electronic components stored in the component storage section to the component pick-up position by rotating to a component take-out position, a protective cover is disposed around the drive mechanism of the sprocket. And

  According to a fifth invention, in the first to fourth inventions, the protective cover is divided into a plurality of parts.

  According to a sixth invention, in the first or second invention, the protective cover is divided into an upper cover body and a lower cover body, and the rotation shaft of the rotation direction conversion mechanism for rotating the sprocket is the The upper cover body and the lower cover body are surrounded by a space.

  In the present invention, electronic components do not enter and bite into the drive mechanism for rotating the sprocket, and in the case of a paper tape storage tape, the fluff does not contaminate the oil for smoothly rotating the sprocket spindle. Can be. Further, since the amount of movement change of the sprocket in the radial direction with respect to the rotation axis when the sprocket rotates is small, it is easy to manage the gap between the protective cover and the rotating sprocket.

  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 are 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 sucking 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 along the beam 12 by the X axis drive motor. As a result, the head unit 13 is moved in the XY direction. Will move.

  Each component supply unit 6 which is a dual lane feeder that intermittently feeds two storage tapes separately using two drive sources has a large number of electronic components at regular intervals in each storage portion formed of a concave portion of a carrier tape. The storage tape covered with the stored cover tape is mounted, and by intermittently feeding the storage tape 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, The head unit 13 is taken out from each storage unit.

  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 that is a dual lane feeder will be described with reference to FIG. The component supply unit 6 intermittently feeds a feeder main body 21 and a storage tape that is sequentially delivered while being wound around a tape supply reel rotatably mounted on the feeder main body 21 to a pickup position (suction extraction position) of an electronic component. It is composed of two tape feeding mechanisms (tape feeding devices) 22 and two cover tape peeling mechanisms (not shown) for peeling the cover tape of the storage tape before the pickup position.

  The storage tape CT 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 CT is peeled off from the slit 23D and stored in the storage section. That is, the electronic component mounted on the storage tape CT 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. The rotating shaft 33 rotatably supported by the support 31 via the bearing 32 and the worm gear 34 which is a rotating direction converting gear provided at an intermediate portion of the rotating shaft 33 are engaged with each other to change the rotating direction. A worm wheel 35 that is a rotation direction changing gear, and a sprocket 36 that feeds the worm wheel 35 that is fixed by a screw 35A and that has a feed tooth 36H formed around the feed hole CTH formed in the storage tape CT. Consists of The worm wheel 35 and the support shaft 37 of the sprocket 36 pass through the intermediate partition 21 </ b> A of the feeder main body 21.

  The worm gear 34 provided on the rotating shaft 33 and the worm wheel 35 meshing with the gear constitute a rotation direction changing mechanism (which constitutes a sprocket rotation drive mechanism), but are not limited thereto, and other rotations are also possible. A direction changing mechanism such as a bevel gear may be used.

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

  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 CT engaged with the feed dog 36H of the sprocket 36 so that the storage tape CT does not come off. When the locking is released to the feeder main body 21 and the locking 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, and the storage tape CT in which the feed hole engages with the teeth of the sprocket 36 is released. Press so that there is no.

  Then, a torsion spring 39 is wound around the pin 43, and one end (the right end in FIG. 4 is bent toward the front side) of the restraint 23 is formed at the rear end portion of the vertical piece 23A of the suppressor 23C. The other end (the left end in FIG. 4) is housed inside the recess formed in the swing piece 42 and locked to the swing piece 42, thereby closing the suppressor 23 (in FIG. 2). Energize 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, the storage tape CT can be easily loaded 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 leaf spring 44 fixed to the feeder body 21 via the screw 38, and the rear portion of the leaf 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 in an open state, so that the storage tape CT can be easily loaded into the component supply unit 6.

  Next, when an electronic component, particularly a minute electronic component, falls and enters the drive mechanism for rotating the sprocket 36, and when the storage tape CT is a paper tape, the fluff causes the sprocket to move. Since the oil is attached to the oil for smooth rotation, and the oil is contaminated, the following protective cover is provided.

  That is, a generally annular first protective cover 60 made of a hard synthetic resin is provided between the two sprockets 36, and a substantially annular second protective cover made of a hard synthetic resin is provided between one sprocket 36 and the feeder body 21. 61 is disposed (see FIG. 5).

  As shown in FIGS. 6, 7 and 8, the first protective cover 60 is roughly composed of a large upper cover body 60A and a small lower cover body 60B. The outer shape having a width exhibits a circular ring shape.

  A thin insertion portion 60A2 is formed at both edges of the outer peripheral side surface 60A1 of the upper cover body 60A having a generally H-shaped vertical cross section, and the sprocket 36 has a constant width and a circular shape (sprocket 36) on opposite side surfaces of the two sprockets 36. The insertion portions 60A2 are inserted into the grooves 36A and 36B formed concentrically with each other with a slight gap therebetween.

  Reference numerals 62 and 62 denote support pieces projecting outward from the outer peripheral side surface 60A1 of the upper cover body 60A, in order to maintain the state in which the insertion portions 60A2 are inserted into the grooves 36A and 36B with a slight gap therebetween. The support pieces 62 and 62 are fitted and fixed in fitting grooves (not shown) provided in the feeder main body 21. Reference numeral 63 denotes a connecting body that connects both ends of the upper cover body 60A to prevent deformation of the upper cover body 60A.

  Also, thin insertion portions 60B2 are formed on both edges of the outer peripheral side surface 60B1 of the lower cover body 60B having a generally T-shaped longitudinal section, and in the grooves 36A and 36B formed on the opposite side surfaces of the two sprockets 36, respectively. The insertion portions 60B2 are inserted with a slight gap.

  64 is a support piece projecting downward and outward from the outer peripheral side surface 60B1 of the lower cover body 60B, in order to maintain the state where each insertion portion 60B2 is inserted into the grooves 36A and 36B with a slight gap therebetween. The support convex portion 65 protruding from the support piece 64 is fitted into a fitting groove (not shown) provided in the support 31 and fixed.

  The upper cover body 60A has a semicircular guide groove 66 with a semicircular cross section opened downward at both ends of the upper cover body 60A, and a semicircular shape with a semicircular cross section opened upward at both ends of the lower cover body 60B. When the guide groove 67 is opened and the upper cover body 60A and the lower cover body 60B constituting the first protective cover 60 are disposed and fixed between the sprockets 36, the upper cover body 60A and the lower cover body 60B guide each other. The rotary shaft 33 passes through the upper cover body 60A and the lower cover body 60B connected to each other so as to surround the rotary shaft 33 through the grooves 66 and 67 with a slight gap. Is arranged. At this time, the first protective cover 60 surrounds the entire meshing gears (worm gear 34 and worm wheel 35) of the drive mechanism for rotating the sprocket 36.

  Then, each insertion portion 60A2 of the upper cover body 60A of the first protective cover 60 is placed in the grooves 36A and 36B, and a slight gap (sprocket) between the outer surface of each insertion portion 60A2 and the outer wall forming the grooves 36A and 36B. 36, a radial gap with respect to the rotational axis of 36) SS, for example, a gap equivalent to the thickness of the smallest electronic component of the electronic components to be mounted, or a length slightly longer than the thickness, or a length slightly shorter than the thickness (See FIG. 12), and the insertion portions 60B2 of the lower cover body 60B are similarly inserted into the grooves 36A and 36B, between the outer surface of each insertion portion 60B2 and the outer wall forming the grooves 36A and 36B. A small gap SS, for example, a gap equivalent to the thickness of the smallest electronic component to be mounted, a length slightly longer than the thickness, or a length slightly shorter than the thickness is inserted. But since the sprocket 36 is moved the amount of change in the radial direction of the sprocket 36 with respect to the rotation axis when the rotation is small, management of the clearance SS is easy. For this reason, the gap SS can be made as small as possible, and electronic parts dropped from the suction nozzle 18 and the storage tape CT enter the drive mechanism for rotating the sprocket 36 through the gap SS, and can be bitten. In the case of a storage tape of paper tape, fuzz can be prevented from adhering to oil for smoothly rotating the sprocket 36, and can be prevented from becoming dirty. Further, as described above, since the gap SS is easily managed, it is possible to keep the gap SS smaller than the gap between the side surface 60A3 of each insertion portion 60A2 and the outer wall forming the grooves 36A and 36B. An electronic component enters and bites into the drive mechanism for rotating the sprocket 36 through the gap SS, and in the case of a paper tape storage tape, the fluff adheres to oil for smoothly rotating the sprocket 36. It is possible to prevent the contamination and prevent the contamination.

  In the unlikely event of the small gap SS at the corner SC of the tip of each insertion portion 60A2 of the upper cover body 60A of the first protective cover 60 and each insertion portion 60B2 of the lower cover body 60B and the corner of the grooves 36A, 36B. The entered electronic component is hard to bend and stops (see FIG. 12), and can be prevented from falling from the gap.

  The second protective cover 61 disposed between one sprocket 36 and the feeder main body 21 is roughly divided into a large upper cover body 61A and a small lower cover, as shown in FIGS. The body 61 </ b> B is configured to have a circular outer shape having a certain width with the inside being hollowed out.

  An insertion portion 61A2 protrudes from the side surface of the flat upper cover body 61A, and is slightly in a groove 36C formed in a circular shape (concentric with the sprocket 36) having a constant width on the opposite side surface of the one sprocket 36. The insertion portions 61A2 are inserted with a small gap.

  68 and 68 are support pieces projecting outward from the outer peripheral side surface 61A1 of the upper cover body 61A, in order to maintain the state in which each insertion portion 61A2 is inserted into the groove 36C with a slight gap therebetween. The support pieces 68 and 68 are fitted and fixed in fitting grooves (not shown) provided in the feeder main body 21.

  Further, a thin insertion portion 61B2 is formed on one edge of the outer peripheral side surface 61B1 of the lower cover body 61B, and there is a slight gap in the groove 36C formed on the opposite side surface of the sprocket 36. The insertion part 61B2 is inserted.

  Reference numeral 71 denotes a support piece projecting upward and outward from the outer peripheral side surface 61B1 of the lower cover body 61B. In order to maintain the insertion portion 61B2 inserted in the groove 36C with a slight gap, the support piece A support convex portion 72 protruding from 71 is fitted into a fitting groove (not shown) provided in the feeder main body 21 and fixed.

  The upper cover 61A has a semicircular guide groove 69 with a semicircular cross section opened downward at both ends of the upper cover body 61A, and the upper cover 61B has a semicircular semicircular cross section opened upward with both ends. When the guide groove 70 is opened and the upper cover body 61A and the lower cover body 61B constituting the second protective cover 61 are disposed and fixed between the sprocket 36 and the feeder body 21, the upper cover body 61A and the lower cover The upper cover body 61A and the lower cover body 61B connected to each other so that the body 61B surrounds the rotary shaft 33 via the guide grooves 69 and 70 via a slight gap, in other words, the gap 61B. The rotating shaft 33 is disposed so as to penetrate therethrough. At this time, the second protective cover 61 surrounds the entire meshing gears (worm gear 34 and worm wheel 35) of the drive mechanism for rotating the sprocket 36.

  Then, the insertion portion 61A2 of the upper cover body 61A of the second protective cover 61 is placed in the groove 36C, and a slight gap between the outer surface of the insertion portion 61A2 and the outer wall forming the groove 36C, for example, of electronic components to be mounted The gap is inserted with a gap equivalent to the thickness of the smallest electronic component, a length slightly longer than the thickness, or a length slightly shorter than the thickness, and the insertion portion 61B2 of the lower cover body 61B is also formed in the groove 36C. A slight gap between the outer surface of the insertion portion 61B2 and the outer wall forming the groove 36C, for example, a length equivalent to the thickness of the smallest electronic component of the electronic components to be mounted, or a length slightly longer than the thickness Alternatively, the gap is inserted with a gap slightly shorter than the thickness. However, since the amount of change in the radial direction with respect to the rotation axis when the sprocket 36 rotates is small, it is easy to manage the gap. For this reason, the gap can be made as small as possible, and electronic parts dropped from the suction nozzle 18 or the storage tape CT enter the drive mechanism for rotating the sprocket 36 through the gap, and can be bitten by a paper tape. In the case of the storage tape, the fuzz can be prevented from adhering to oil for smoothly rotating the sprocket 36, and can be prevented from becoming dirty. Further, as described above, since the gap is easily managed, it is possible to keep the gap smaller than the gap with the outer wall that forms the side groove 36C of each insertion portion 61A2. As a result, the electronic component can reduce the gap. In the case of a paper tape storage tape, the fuzz is prevented from adhering to the oil for smoothly rotating the sprocket 36. Can be reliably prevented.

  As in the case of the first protective cover 60 described above, the corners of the distal ends of the insertion portions 61A2 of the upper cover body 61A of the second protective cover 61 and the insertion portions 61B2 of the lower cover body 61B, and the corners of the grooves 36C, In this part, the electronic component that has entered from the slight gap is hard to bend and stops, and thus it can be prevented from falling through the gap.

  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 having 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 component tape feed operation and the cover tape peeling operation are performed, and the storage tape goes under the suppressor 23.
That is, when the servo motor 28 is driven to supply the electronic components in the storage tape CT in the component supply unit 6, only the rotating shaft 33 is rotated by rotating the gear 27 and the gear 30 via the timing belt 29, and the worm The sprocket 36 is intermittently rotated by a predetermined angle in the feed direction through the gear 34 and the worm wheel 35, whereby the storage tape CT is intermittently fed through the feed hole CTH, and the cover tape is peeled off by the cover tape peeling mechanism. The electronic component sent to the position is picked up by the suction nozzle 18 through the opening 23E.

  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.

  Even if an electronic component falls from the suction nozzle 18 or the storage tape CT, the dropped electronic component is not removed from the first protective cover 60 and one of the sprockets 36, the feeder main body 21, and the sprocket 36. The second protective cover 61 disposed between them is inserted into the drive mechanism for rotating the sprocket 36 and bites, and in the case of a paper tape storage tape, the fluff causes the sprocket 36 to rotate smoothly. This prevents the oil from adhering to the oil and prevents it from becoming dirty.

  That is, each insertion portion 60A2 of the upper cover body 60A of the first protective cover 60 is placed in the grooves 36A and 36B, and there is a slight gap between the outer surface of each insertion portion 60A2 and the outer wall forming the grooves 36A and 36B. The insertion portions 60B2 of the lower cover body 60B are similarly inserted into the grooves 36A and 36B, with a slight gap between the outer surface of each insertion portion 60B2 and the outer wall forming the grooves 36A and 36B. Can be inserted. Further, the insertion portion 61A2 of the upper cover body 61A of the second protective cover 61 is inserted into the groove 36C with a slight gap between the outer surface of the insertion portion 61A2 and the outer wall forming the groove 36C, and Similarly, the insertion portion 61B2 of the lower cover body 61B can be inserted into the groove 36C with a slight gap between the outer surface of the insertion portion 61B2 and the outer wall forming the groove 36C. Accordingly, the first protective cover 60 and the second protective cover 61 can prevent the dropped electronic components from entering the drive mechanism for rotating the sprocket 36 through the slight gap described above, and the paper tape In the case of this storage tape, the fuzz can be prevented from adhering to oil for smoothly rotating the sprocket 36, thereby preventing the fouling.

  In addition, since the amount of change in movement of the sprocket 36 in the radial direction relative to the rotational axis when the sprocket 36 rotates is small, the clearance can be easily managed.

  The embodiment of the present invention has been described by taking as an example a dual lane feeder type component supply unit that intermittently feeds two storage tapes separately using two drive sources, but one storage tape is used as one drive source. It can also be applied to a single lane feeder type component supply unit that intermittently feeds using the.

  The worm gear 34 provided on the rotating shaft 33 and the worm wheel 35 meshing with the gear constitute a rotation direction changing mechanism (which constitutes a sprocket rotation drive mechanism), but are not limited thereto, and other rotations are also possible. A direction changing mechanism such as a bevel gear may be used.

  Furthermore, the first protective cover 60 and the second protective cover 61 surround the entire sprocket rotational drive mechanism, but at least the protective cover is above the rotational drive mechanism and does not necessarily extend over the entire circumference. It does not have to be provided.

  Further, the grooves 36A, 36B, 36C formed in both the sprockets 36 are formed in a square shape from the upper wall, the side wall, and the lower wall that are open on one surface, but the present invention is not limited to this, and the one surface and the lower surface are formed. A cut shape may be used.

  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. It is a longitudinal cross-sectional view of a component supply unit. It is a figure which shows the state which the upper cover body and lower cover body of a 1st protective cover have isolate | separated. It is a figure which shows the state which the upper cover body and lower cover body of a 1st protective cover have connected. It is a figure which shows the state which surrounded the rotating shaft of the rotation direction conversion mechanism with the upper cover body and lower cover body of the 1st protective cover. It is a figure which shows the state which the upper cover body and lower cover body of the 2nd protective cover have isolate | separated. It is a figure which shows the state which the upper cover body and lower cover body of a 2nd protective cover have connected. It is a figure which shows the state which surrounded the rotating shaft of the rotation direction conversion mechanism with the upper cover body and lower cover body of the 2nd protective cover. FIG. 6 shows a partially enlarged view of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus main body 6 Component supply unit 13 Head unit 21 Feeder main body 33 Rotating shaft 34 Worm gear 35 Warm wheel 36 Sprocket 36A, B, C Groove 37 Support shaft 60 First protective cover 61 Second step back cover 60A, 61A Upper cover body 60B, 61B Lower cover body 60A2, 60B2 Insertion section 66, 67 Guide groove 69, 70 Guide groove

Claims (6)

  A sprocket having a feed dog fitted in a feed hole of a storage tape in which a component storage section for storing electronic components is formed at a predetermined interval is rotated about a support shaft as a fulcrum, so that the inside of the component storage section In the component supply apparatus for supplying the electronic component housed in the groove, a groove is formed concentrically with the center of rotation on the side surface of the sprocket, and an insertion portion formed on the outer peripheral edge between the sprocket and the feeder body is formed in the groove. A component supply device comprising an annular protective cover fixed to the feeder body in a state of being inserted with a slight gap therebetween.   Two sprockets having feed teeth fitted in feed holes of two storage tapes in which a component storage part for storing electronic components is formed with a predetermined interval are separately rotated with a support shaft as a fulcrum. In the dual lane feeder type component supply device that supplies the electronic components stored in the component storage unit to the take-out position, grooves are formed concentrically with the center of rotation on opposite sides of the two sprockets, An annular protective cover that is fixed to the feeder body in a state where the insertion portions formed on the outer peripheral edge portion between the sprockets are inserted in the grooves with a slight gap between them. Feeding device.   A sprocket having a feed dog fitted in a feed hole of a storage tape in which a component storage section for storing electronic components is formed at a predetermined interval is rotated about a support shaft as a fulcrum, so that the inside of the component storage section A component supply apparatus for supplying an electronic component housed in a device, wherein a protective cover is disposed around the drive mechanism of the sprocket.   Two sprockets having feed teeth fitted in feed holes of two storage tapes in which a component storage part for storing electronic components is formed with a predetermined interval are separately rotated with a support shaft as a fulcrum. In the dual lane feeder type component supply device for supplying each of the electronic components stored in the component storage unit up to the take-out position, a protective cover is disposed around the drive mechanism of the sprocket.   The component supply apparatus according to claim 1, wherein the protective cover is divided into a plurality of parts.   The protective cover is divided into an upper cover body and a lower cover body, and surrounds a rotation axis of a rotation direction conversion mechanism for rotating the sprocket with a gap between the upper cover body and the lower cover body. The component supply apparatus according to claim 1, wherein the component supply apparatus is configured to perform the above-described operation.

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