JP4387916B2 - Parts supply device - Google Patents

Description

  The present invention peels off the cover tape and intermittently feeds the electronic components stored in the component storage portion of the carrier tape to the component extraction position, and the shutter moves to open the upper portion of the component extraction position to mount the electronic component. The present invention relates to a component supply device used for taking out an electronic component by a suction nozzle of the device.

Such a component supply apparatus is disclosed in, for example, Patent Document 1. Generally, when a carrier tape containing electronic components is sent, the carrier tape is pressed by a shutter so that the electronic components are not exposed.
(See Patent Document 1).
JP 2003-142878 A

  However, since the carrier tape is stored in a state of being wound around a reel, the carrier tape has a curl and the carrier tape tends to float up when the pressing by the shutter is weak. That is, when the shutter is opened so that the suction nozzle picks up the electronic component at the component pick-up position, the part of the shutter presses the carrier tape, so that the non-pressed portion is easy to float and the electronic component is likely to be violated. However, there is a problem that the component storage unit sometimes floats obliquely or jumps out from the component storage unit of the carrier tape.

  Accordingly, an object of the present invention is to hold an electronic component in a component extraction position in a stable state when the shutter is opened, so that the electronic component is not exposed.

  For this reason, the first invention peels off the cover tape and intermittently feeds the electronic component stored in the component storage portion of the carrier tape to the component extraction position, and the shutter moves to open the upper portion of the component extraction position. In the component supply device for taking out the electronic component by the suction nozzle of the electronic component mounting device, when the shutter moves and opens above the component take-out position, avoid the component storage portion at the component take-out position. A tape pressing portion for pressing the carrier tape is formed on both ends of the component storage portion at the end of the shutter.

  According to a second aspect of the present invention, the cover tape is peeled off and the electronic component stored in the component storage portion of the carrier tape is intermittently fed to the component extraction position, and the shutter moves to open the electronic component above the component extraction position. In a component supply apparatus for taking out an electronic component by a suction nozzle of a component mounting device, when the shutter moves and opens above the component take-out position, the component avoids the component storage portion at the component take-out position. An end of the shutter is formed in a U shape so as to hold the carrier tape on both sides of the storage portion.

  According to the present invention, when the shutter is opened, the electronic component at the component extraction position can be held in a stable state, and the electronic component can be prevented from being exposed.

  Hereinafter, an embodiment of a component supply apparatus according to the present invention will be described with reference to the drawings. FIG. 1 shows an electronic component mounting apparatus using a component supply apparatus according to the present invention. This electronic component mounting apparatus has an XY table 1 on which a printed circuit board 5 on which a chip-shaped electronic component (hereinafter abbreviated as “chip component”) 4 is mounted is placed. The shaft motor 2 and the Y-axis motor 3 are configured to move in the XY directions by rotation. In addition, this electronic component mounting apparatus includes a supply base 6 on which a number of component supply devices 7 for supplying chip components 4 are detachably attached to the upper surface thereof. A nut (not shown) is fixed to the supply base 6, and a ball screw 9 is fitted to the nut. When the ball screw 9 is rotated by driving the supply table drive motor 8, the supply table 6 is guided by the linear guide 11 through the nut with which the ball screw 9 is fitted and moved in the X direction.

  The electronic component mounting apparatus further includes a rotary table 12. The rotary table 12 is configured to intermittently rotate clockwise as a cam (not shown) is rotated by driving of a drive motor (not shown). Eight mounting heads 14 are arranged at equal intervals according to the intermittent pitch on the outer edge portion of the lower surface side of the rotary table 12, and each mounting head 14 has four suction nozzles 13 for sucking the chip component 4. A book is provided.

  The mounting head 14 is attached to a lower portion of a head lifting / lowering shaft (not shown) penetrating through the rotary table 12 and moved up and down by a head driving shaft (not shown). It is configured to move up and down. The suction nozzle 13 provided in the mounting head 14 is configured to suck and take out the chip component 4 from the component supply device 7.

  A stop position where the mounting head 14 stops in order for the suction nozzle 13 to suck the chip component 4 is a suction station, and the suction nozzle 13 sucks the chip component 4 in this suction station. The position at which the mounting head 14 stops next is the recognition station. In this recognition station, the component recognition camera 15 images the chip component 4 sucked by the suction nozzle 13, and the recognition process is performed based on the captured image. The apparatus recognizes the positional deviation of the chip component 4.

  The position where the mounting head 14 stops next to the recognition station is an angle correction station. Based on the recognition result recognized by the recognition processing device in the angle correction station, the nozzle rotation roller 16 moves the suction nozzle 13 to θ. By rotating in the direction, the positional deviation of the rotation angle of the chip component 4 is corrected.

  The stop position where the mounting head 14 stops after this angle correction station is the mounting station, and the chip component 4 sucked by the suction nozzle 13 stopped in this mounting station is placed on the XY table 1. It is comprised so that 5 may be mounted | worn.

  The component feeding operation of the component feeding device 7 is performed by raising and lowering a tape feed lifting lever 32 (described later) provided above the component feeding device 7 that is stopped at a position where the chip component 4 is attracted by the movement of the feeding table 6 It is comprised so that the parts feeding operation which is.

  Next, the component supply device 7 will be described with reference to FIG. 2. The component supply device 7 includes a tape reel (not shown) wound with a storage tape for storing electronic components at equal intervals, and the tape reel. A tape delivery device 30 that feeds out the storage tape, and a cover tape winding device 31 that winds the cover tape Ca from the carrier tape Cc that constitutes the storage tape. The storage tape stores the chip components 4 in the component storage recesses Cb formed at equal intervals, and has a carrier tape Cc in which tape feed holes (not shown) are formed at equal intervals, and component storage It is comprised from the cover tape Ca which covers the upper surface opening of the recessed part Cb.

  Reference numeral 32 denotes a tape feed raising / lowering lever that moves up and down to move the drive lever 33 of the tape feeding device 30 up and down. The tape feeding raising / lowering lever 32 is driven in synchronization with the rotary table 12 and moves up and down. The storage tape wound in the tape reel is intermittently fed, and the chip component 4 stored in the storage recess Cb of the storage tape is supplied to the component extraction position (suction position) of the suction nozzle 13. Then, the cover tape Ca is peeled immediately before the suction position, and the chip component 4 is sucked and taken out by the suction nozzle 13 descending.

  The tape feeding device 30 is rotatable around the support shaft 41 to feed out the carrier tape Cc, and has tape feed teeth 40A which are sequentially fitted in the tape feed holes of the carrier tape Cc and formed on the outer peripheral portion. A sprocket 40 in which inner teeth 40B are formed on the outer peripheral side surface (step surface) of a circular recess formed around a shaft 41, and a feed that can rotate around the support shaft 41 and fit to the inner teeth 40B An oscillating body 42 that rotates the sprocket 40 via a claw 46, a stopper 43 that engages with the abutting portion 42A of the oscillating body 42 to regulate the rotational angle position, and an oscillating body drive that drives the oscillating body 42. And a mechanism 45.

  The tape feed dog 40A has the same thickness as that of the main body of the sprocket 40 (see FIG. 21). However, as shown in FIG. Tapers 40C are formed on both sides so as to become thinner. Further, as shown in FIGS. 5 and 6, the tape feed dog 40A is chamfered so as to be rounded so as to eliminate the ridgeline as a whole. As a result, when the state of the carrier tape Cc is unstable in the past, the tape feed teeth 40 </ b> A do not enter into the tape feed hole, but the carrier tape Cc is easy to enter.

  The tape delivery device 30 incorporates a one-way clutch torque limiter, and the sprocket 40 can rotate only in the feeding direction of the storage tape.

  The feed claw 46 is rotatably attached to the support shaft 47 to the rocking body 42, but is always urged by a spring (not shown) and pressed against the inner teeth 40B of the sprocket 40.

  The oscillating body driving mechanism 45 will be described. The driving mechanism 45 drives the oscillating body 42 using a tape feed lifting lever 32 and a spring 57 described later as a driving source, and one end portion of the oscillating body 42 via the pin 50 The link lever 51 is pivotally connected to the other end of the link lever 51 via a pin 52, and the central portion is pivotally supported by the support shaft 53. The transmission lever 55 has a shutter opening / closing pin 56 at the other end, and the drive lever 33 is connected to the transmission lever 55 via the pin 54 at one end. The transmission lever 55 is biased counterclockwise in FIG.

  60 is a U-shaped suppressor having a substantially U-shaped cross-section, and the carrier tape Cc after peeling of the storage tape and the cover tape Ca is always pressed against the tape delivery device main body 7A from above so that they do not come off the tape delivery device main body 7A. In particular, the tape feed hole of the carrier tape Cc acts so as not to come off from the tape feed teeth 40A of the sprocket 40.

  The suppressor 60 is rotatably provided on the tape delivery device main body 7A via a rear pin 61, and a locking pin 62 provided on the front end portion of the side surface is a lock claw of the lock device 63 of the tape delivery device main body 7A. The above-mentioned operation is ensured by locking to 64. The locking device 63 is biased in a direction in which one end is fixed to the lower part of the front end of the tape delivery device main body 7A and is made of a leaf spring and a coil spring is inserted into the pin 66 and opened. The lock claw 64 is connected to the support piece 65 through the pin 66 so as to be regulated.

  Further, a locking member 68 is integrally provided at the rear end portion of the suppressor 60, for example, and when the locking of the locking pin 62 and the locking claw 64 is released, the suppressor 60 is rotated about the pin 61 as a fulcrum. be able to.

  Further, an opening is formed in the upper surface intermediate portion of the suppressor 60, and a shutter 70 is provided so as to be movable in the longitudinal direction of the suppressor 60 so as to cover the opening. That is, the guide plate 60B is fixed on the suppressor 60 by two standing screws 60A, and the protrusion on the back surface of the guide plate 60B is fitted into the elongated slot-shaped guide groove 70C opened on the upper surface of the shutter 70. In the combined state, the shutter 70 can reciprocate in the longitudinal direction of the suppressor 60 while the guide groove 70 </ b> C is guided by the guide plate 60 </ b> B on the suppressor 60.

  Therefore, when the drive lever 33 is lowered, the transmission lever 55 swings clockwise in FIG. 2 with the support shaft 53 as a fulcrum, so that the shutter opening / closing pin 56 is fitted in the engagement groove 70B of the side piece 70A of the shutter 70. Therefore, the shutter 70 moves backward. By this movement, a component take-out port 71 (see FIG. 19) is formed, and the suction nozzle 13 can pick up and take out the first chip component 4 in the component storage recess Cb of the carrier tape Cc.

  Conventionally, in order to smoothly swing the transmission lever 55 that swings with the support shaft 53 as a fulcrum by the lowering of the drive lever 33, the gap between the tape feeding device main body 7A and the transmission lever 55 or The grease, which is a lubricant, was applied after being decomposed, and this application work was troublesome. Therefore, as shown in FIGS. 9 and 10, an oil supply hole 49A is formed around the swing fulcrum portion of the transmission lever 55, specifically, at an upper position near the support shaft 53 of the transmission lever 55. Grease is supplied through an oil supply jig such as an injector through 49A. As a result, after refueling, every time the transmission lever 55 swings about the support shaft 53 as the drive lever 33 moves up and down, the fulcrum of the transmission lever 55, that is, the transmission lever 55 and the support shaft 53, gradually and uniformly. The grease reaches the sliding portion between the transmission lever 55 and the transmission lever 55 and the sliding portion between the tape delivery device main body 7A and the transmission lever 55 swings smoothly.

  Further, as shown in FIGS. 11 and 12, the support shaft 53 has a fitting portion 53C that fits into a fitting hole formed in the tape feeder main body 7A, and a transmission lever having a larger diameter than the fitting portion 53C. 55 includes a fitting portion 53B that fits into a fitting hole established in 55, and a head portion 53A having a diameter larger than that of the fitting portion 53B. Is provided with an oil supply hole 49B in the upper part of the head 53A so as to straddle the fitting part 53B of the support shaft 53 of the transmission lever 55 and its fitting hole, and an oil supply treatment such as an injector is provided through the oil supply hole 49B. Use a tool to lubricate the grease. Accordingly, the grease reaches the fulcrum portion of the transmission lever 55 gradually and uniformly every time the transmission lever 55 swings, and the transmission lever 55 swings smoothly.

  Further, as shown in FIGS. 13 and 14, an oil supply hole 49C is opened in the axial direction at the center (central part) of the support shaft 53, and the fitting portion 53B is fitted through the oil supply hole 49C. A diffusion passage 53D extending to the outer periphery of the portion 53B is opened. That is, the diffusion passage 53D is created on a string passing through the center. Accordingly, when grease is supplied through the oil supply hole 49C using an oil supply jig such as an injector, the oil is gradually and evenly distributed every time the transmission lever 55 is swung through the diffusion passage 53D communicating with the oil supply hole 49C. Grease reaches the fulcrum portion of the transmission lever 55, and the transmission lever 55 swings smoothly. Further, as shown in FIG. 15, a recess is formed on the entire outer periphery of the fitting portion 53B to form a grease reservoir portion 53E, and the grease that has come out through the diffusion passage 53D is fitted into the fitting portion. It is easy to turn around the outer periphery of 53B, and the grease collected in the grease reservoir 53E between the transmission lever 55 and the opening surface of the fitting hole can be used effectively.

  Further, as shown in FIGS. 16 and 17, the support lever 55 is supported around the swing fulcrum of the transmission lever 55, specifically, at the upper right position near the support shaft 53 of the transmission lever 55, which is a place where the load load is small. An oil supply recess 49D extending to the fitting portion 53B of the shaft 53 is opened, and grease is supplied through an oil supply hole 49D using an oil supply jig such as an injector. As a result, after refueling, the grease reaches the fulcrum of the transmission lever 55 gradually and uniformly every time the transmission lever 55 swings due to the raising and lowering of the drive lever 33, and the transmission lever 55 swings smoothly. .

  The shutter 70 is moved to open the part take-out position and the part take-out port 71 is formed. However, the part storage part Cb at the part take-out position is sandwiched (avoid the part storage part Cb). A tape pressing portion 70E for pressing the carrier tape Cc is formed at the end of the shutter 70 on both sides of the component storage portion Cb. That is, the end portion of the shutter 70 is formed in a U-shape in plan view, and when the shutter 70 moves to open above the component extraction position, avoid the component storage portion Cb at the component extraction position, The tape pressing part 70E presses the carrier tape Cc on both sides using its elasticity. For this reason, both the tape pressing portions 70E can balance the carrier tape Cc on both sides of the component storage portion Cb, and when the shutter 70 is opened, the chip component 4 at the component extraction position is held in a stable state. The chip component 4 can be prevented from being exposed.

  Further, when feeding the tape, the carrier tape Cc is pressed by the shutter 70 so that the chip component 4 is not violated, and it is formed in a thin plate shape in order to hold the widest possible range. However, in the case of the chip component 4 having magnetism, the shutter 70 is magnetized while being used, so that the chip component 4 is attracted to the back surface of the shutter 70 and moved to open the shutter 70. At this time, there is a problem that the chip component 4 is easily violated, and the chip component 4 sometimes floats obliquely in the component storage portion Cb or jumps out of the component storage portion Cb. Further, in the case where the chip component 4 protrudes from the upper surface of the carrier tape Cc and is stored in the component storage portion Cb, the shutter 70 pushes the chip component 4 from above and damages it or makes the chip component 4 violent. Become.

  Therefore, as a countermeasure against the former chip part 4 having magnetism, as shown in FIG. 7, one line that can contact a part of the chip part 4 corresponding to the position where the chip part 4 passes through the back surface of the shutter 70 is provided. The concave portions 70G are formed on both sides while leaving the component pressing portion 70F, thereby reducing the contact area with the chip component 4 as much as possible to prevent the shutter 70 from being magnetized, and the chip component 4 is attracted to the back surface of the shutter 70 So that the chip component 4 is not violated. Further, as a countermeasure against the chip component 4 protruding from the upper surface of the latter carrier tape Cc and stored in the component storage portion Cb, as shown in FIG. 8, when the chip component 4 passes through the back surface of the shutter 70, this chip component 4 A recess 70H is formed so that the chip 4 does not come into contact with the back surface of the shutter 70 so that the chip part 4 is not damaged or the chip part 4 is not violated. The recess 70H is formed to be recessed above the upper surface level of the carrier tape Cc after the cover tape Ca is peeled off.

  In this embodiment, the component pressing portion 70F and the concave portion 70G shown in FIG. 7 and the concave portion 70H shown in FIG. 8 are provided on the feeding direction side of the shutter 70 from the opening end portion on the component feeding direction side of a slit 72 described later. However, it may be formed only for the moving stroke for opening and closing the shutter 70 from the tip of the shutter 70 in the feed direction side toward the component feed direction. As a result, the above-described effects can be obtained only by the moving distance of the chip component 4 from when the cover tape Cc is peeled off until it is picked up, and by the stroke for opening and closing the shutter 70.

  Further, as shown in FIGS. 2 and 3, the shutter 70 is formed with a slit 72 which becomes a fulcrum when the cover tape Ca is peeled off, and the peeled cover tape Ca is slit 72 from below the shutter 70. Through the guide roller 75, 76, 77 and then taken up by the cover tape take-up device 31. The cover tape take-up device 31 is detachably attached to a mounting plate 67 and can be turned around a take-up reel 78 for taking up the cover tape Ca and a support shaft 81, and one end of the cover tape take-up device 31 via a pin 79. A swing lever 80 that is pivotally connected to the drive lever 33 and whose abutment portion 85 at the other end abuts against a stopper 86 to restrict the rotation, and a latching portion 82 of the swing lever 80 and a latch A take-up lever 84 in which a tension spring 83 is stretched between the pin 87 and a one-way clutch 90 that is integrally formed with the take-up reel 78 and is driven by the take-up lever 84.

  Accordingly, when the swing lever 80 rotates counterclockwise in FIG. 2, the ratchet lever 84 is swung counterclockwise via the tension spring 83, and the ratchet pawl meshes with the ratchet gear, and the take-up reel 78 Is rotated counterclockwise by a predetermined angle, and the cover tape Ca adhered to the upper surface of the carrier tape Cc is peeled off from the carrier tape Cc through the slit 72 of the shutter 70 holding the storage tape, and the take-up reel It will be wound up by 78.

  As shown in FIG. 18, when the drive lever 33 is lowered, the transmission lever 55 swings clockwise with respect to the support shaft 53 as shown in FIG. Since it is fitted in the engaging groove 70 </ b> B of 70 </ b> A, the shutter 70 moves rearward to form a component outlet 71, and the suction nozzle 13 picks up the first chip component 4 in the component storage recess Cb of the carrier tape Cc. Can be adsorbed and removed.

  With the above configuration, the operation will be described below. First, the tape delivery device 30 in the standby state is shown in FIG. 2. In this state, as shown in FIG. 18, when the tape feed raising / lowering lever 32 is lowered by driving in synchronization with the rotary table 12, the drive lever 33 also descends, the transmission lever 55 rotates clockwise against the urging force of the spring 57, and the link lever 51 is moved to the left (front), and the oscillating body 42 is moved to the support shaft. With 41 as a fulcrum, it is rotated in the clockwise direction opposite to the tape feeding direction. Then, due to the rotation of the rocking body 42, the feeding claw 46 gets over by one mountain of the inner teeth 40B of the sprocket 40.

  At this time, due to the clockwise rotation of the transmission lever 55, the shutter opening / closing pin 56 is fitted in the engaging groove 70B of the side piece 70A of the shutter 70, so the shutter 70 moves rearward. By this movement, the component take-out port 71 is opened, and the suction chip 13 can pick up and take out the first chip component 4 in the component storage recess Cb of the carrier tape Cc (see FIG. 19).

  When the shutter 70 is moved and the upper part of the part takeout position is opened to form the part takeout port 71, the carrier tape Cc is taped on both sides to avoid the part storage part Cb at the part takeout position. The holding part 70E holds down. For this reason, both the tape pressing portions 70E can balance the carrier tape Cc on both sides of the component storage portion Cb, and when the shutter 70 is opened, the chip component 4 at the component extraction position is held in a stable state. The chip component 4 can be prevented from being exposed.

  Further, as described above, when the tape feed lift lever 32 is lowered, the swing lever 80 is rotated counterclockwise as shown in FIG. 18, and the ratchet lever 84 is swung counterclockwise via the tension spring 83. Since the ratchet pawl meshes with the ratchet gear, the take-up reel 78 is rotated counterclockwise by a predetermined angle, and the cover tape Ca affixed to the upper surface of the carrier tape Cc is the shutter 70 holding the storage tape. Is wound on the take-up reel 78 while being peeled off from the carrier tape Cc through the slit 72.

  As shown in FIGS. 20 and 2, when the tape feed lift lever 32 is lifted, the drive lever 33 is also lifted by the urging force of the spring 57, and the transmission lever 55 rotates counterclockwise around the support shaft 53 as a fulcrum. Then, the link lever 51 is moved to the right (backward), and the swinging body 42 is rotated counterclockwise with the support shaft 41 as a fulcrum. Then, by the rotation of the rocking body 42 in the counterclockwise direction, the feeding claw 46 meshing with the internal teeth 40B of the sprocket 40 rotates the sprocket 40 in the carrier tape feeding direction (counterclockwise).

  Accordingly, since the tape feed teeth 40A are fitted in the tape feed holes of the carrier tape Cc, the carrier tape Cc is fed by one pitch. At this time, due to the counterclockwise rotation of the transmission lever 55, the shutter opening / closing pin 56 is fitted in the engagement groove 70B of the side piece 70A of the shutter 70. 71 is closed (see FIG. 3).

  As described above, the peeling operation of the cover tape Ca and the feeding operation of the carrier tape Cc are performed, and the chip components 4 are sequentially taken out from the carrier tape Cc by the suction nozzle 13 and mounted on the printed circuit board 5. .

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

  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. It encompasses alternatives, modifications or variations.

It is a top view of an electronic component mounting apparatus. It is a side view in which a part supply device in a standby state is partially broken. It is a top view of a shutter of a suppressor and a closed state. It is a perspective view of the tape feed dog of a sprocket. It is a front view of the tape feed dog of the sprocket which shows other embodiment. It is a right view of the tape feed dog of the sprocket which shows other embodiment similarly. It is a vertical side view in an upstream position from the taking-out position of a chip component. It is a vertical side view in an upstream position from the taking-out position of a chip component. FIG. 5 is an enlarged side view in which a part of a connecting portion between a drive lever and a transmission lever is omitted. It is AA sectional drawing of FIG. It is the expansion side view which abbreviate | omitted a part of connection part of the drive lever and transmission lever which shows other embodiment. It is BB sectional drawing of FIG. It is the expansion side view which abbreviate | omitted a part of connection part of the drive lever and transmission lever which shows other embodiment. It is CC sectional drawing of FIG. It is a side view of the spindle of the transmission lever shown in FIG. It is the expansion side view which abbreviate | omitted a part of connection part of the drive lever and transmission lever which shows other embodiment. It is DD sectional drawing of FIG. It is a side view which can partly fracture | rupture the components supply apparatus of the state which the drive lever fell. It is a top view of a suppressor and an open shutter. It is a side view which can partly fracture | rupture the components supply apparatus of the raising middle state after a drive lever descend | falls. It is a perspective view of the tape feed dog of the conventional sprocket.

Explanation of symbols

4 Chip-shaped electronic component 13 Suction nozzle 70 Shutter 70E Tape pressing portion Ca Cover tape Cb Component storage portion Cc Carrier tape

Claims (2)

  The cover tape is peeled off and the electronic component stored in the component storage part of the carrier tape is intermittently fed to the component pick-up position, and the shutter moves to open the upper portion of the component pick-up position, so that the suction nozzle of the electronic component mounting device In the component supply apparatus for taking out the electronic component by the above, when the shutter is moved and the upper part of the component takeout position is opened, the component takeaway position is avoided on both sides of the component takeaway portion. A component supply apparatus, wherein a tape pressing portion for pressing the carrier tape is formed at an end of the shutter. The cover tape is peeled off and the electronic component stored in the component storage part of the carrier tape is intermittently fed to the component pick-up position, and the shutter moves to open the upper portion of the component pick-up position, so that the suction nozzle of the electronic component mounting device In the component supply apparatus for taking out the electronic component by the above, when the shutter is moved and the upper part of the component takeout position is opened, the component takeaway position is avoided on both sides of the component takeaway portion. The component supply device, wherein an end portion of the shutter is formed in a U shape so as to hold the carrier tape.

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