JP2010232489A - Bulk feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bulk feeder, capable of surely feeding only the parts in a proper direction to an outlet port, without having to use conventional direction changing means, even if parts defined by the length, width and height having the directional property are fed. <P>SOLUTION: The bulk feeder determines whether a chip resistor CR is a proper direction on the way of movement along a longitudinal direction in a feeding path 17, when in a proper direction; a rotation of a rotor 40 is stopped such that a permanent magnet 40d for sucking the chip resistor CR stops on the right side of the outlet port 19; and the chip resistor CR is fed to the outlet port 19, while when in not a proper direction, the rotation of the rotor 40 is continued, such that the permanent magnet 40d sucking the chip resistor CR passes through the right side of the outlet port 19 and the chip resistor CR is transferred from the feeding path 17 to a recovery path 18 and is returned to a storage chamber 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a bulk feeder that supplies separated parts aligned in a predetermined direction.

  A bulk feeder is optimal as a component supply means of a mounter (component mounting apparatus), and when used, a plurality of bulk feeders with different supply targets are arranged in parallel in the feeder mounting area of the mounter. The mounter selectively picks up the components from the outlets of the bulk feeders by the suction nozzle, and mounts the picked-up components on a mounting object such as a circuit board.

  FIGS. 1A to 1C show examples of the shape of a part to be supplied with a bulk feeder. The part EC1 shown in FIG. 1A has a length L1> width W1> height H1. A cuboid shape having a dimensional relationship is formed, and the component EC2 shown in FIG. 1 (B) has a cuboid shape having a dimensional relationship of length L2> width W2 = height H2, and is shown in FIG. 1 (C). The component EC3 has a cylindrical shape having a dimensional relationship of length L3> diameter R3. Typical examples of these components EC1 to EC3 are small chip capacitors and chip registers having lengths L1 to L3 of 1.6 mm, 1.0 mm, 0.6 mm, 0.4 mm, and the like.

  The component EC1 has a length L1 greater than a width W1 and a height H1, the component EC2 has a length L2 greater than a width W2 and a height H2, and the component E3 has a length greater than a diameter R3. Therefore, in the bulk feeder for supplying any one of the components EC1 to EC3, the components EC1 to EC3 are in the length direction (the length is parallel to the traveling direction in the components EC1 and EC2). In addition, the two outlets that define the width and the two surfaces that define the height are aligned in a direction perpendicular to the traveling direction, and in the component EC3, the length is parallel to the traveling direction). It is common to supply to.

  Patent Documents 1 and 2 disclose examples of the structure of the bulk feeder. This bulk feeder is intended to supply components that can be attracted by magnetic force, and includes a storage chamber having a rear wall surface and an arcuate guide surface on the outer periphery, and an intake port (hereinafter, referred to as the upper end of the guide surface). An intake port), a passage provided downstream from the intake port, a rotating plate provided behind the wall surface of the storage chamber, and a magnet provided on the rotating plate. The bulk feeder moves a plurality of parts attracted by the magnet upward along the wall surface and the guide surface by rotating the rotating plate in a predetermined direction, and has a length direction aligned by the wall surface and the guide surface. Only the parts are taken into the inlet, and the introduced parts are moved downstream using the passage. In addition, since this bulk feeder employs a system in which the parts flowing into the intake port are moved downstream using the passage, there is another passage at the end of the passage, and the tip of the separate passage. There is a top opening.

  By the way, a part having a rectangular parallelepiped shape such as the parts EC1 and EC2 has two surfaces that define the lengths L1 and L2, two surfaces that define the widths W1 and W2, and two surfaces that define the heights H1 and H2. There is at least one having directionality, and there are components having a directionality on two surfaces defining the length L3 in the cylindrical part such as the component EC3.

  FIG. 2A shows a chip register CR as an example. The chip register CR belongs to the shape of the component EC1, and has a dimensional relationship of length Lcr> width Wcr> height Hcr. The chip register CR has external electrodes CRa at both ends in the length direction of the main body CRb, and has a resistance film CRc and a protective film CRd covering the resistance film CRc on one of the two surfaces defining the height Hcr. In short, since this chip register CR has directionality on two surfaces that define the height Hcr depending on the presence or absence of the resistance film CRc and the protection film CRd, as shown in FIG. 2B, the resistance film CRc and the protection film CRc. As shown in FIG. 2A, each external electrode CRa is mounted on the pad PD of the substrate SB with the CRd facing downward, and the resistance film CRc and the protective film CRd are facing upward. It is desirable that the external electrode CRa be mounted on the pad PD of the substrate SB.

  The bulk feeders disclosed in Patent Documents 1 and 2 have a function of aligning the chip registers CR in the length direction and supplying the chip registers CR to the outlet. However, all of the chip registers CR supplied to the outlet are the resistive film. Since there is no function to control the CRc and the protective film CRd to face upward, the chip register CR supplied to the outlet has a probability of 1/2 of the resistance film CRc and the protective film CRd downward from the probability theory. It will be in a state.

  Therefore, when the chip register CR is to be supplied by the bulk feeder disclosed in Patent Documents 1 and 2, the chip register CR in a state in which the resistance film CRc and the protective film CRd face downward is referred to as the resistance film CRc and the resistance film CRc. It is necessary to provide directionality conversion means for converting to a state in which the protective film CRd faces upward.

  This direction conversion means is disclosed in Patent Documents 3 to 5. The direction conversion means disclosed in Patent Document 3 includes a front / back detection sensor, a concave groove for taking in components at the tip, and a rotation shaft that is rotatably provided at the boundary between the upper and lower pipes and the horizontal pipe And a rotor having magnetic poles at both ends and fixed to the rotating shaft, and an electromagnet for rotating the rotor forward and backward by 90 degrees. This directivity converting means detects the front and back of a part taken into the groove of the rotating shaft with a front and back detection sensor, and rotates the rotating shaft forward and reverse by 90 degrees based on the detection result. The directionality is changed, and the part is fed to the horizontal pipe line by compressed air.

  Further, the directionality conversion means disclosed in Patent Document 4 includes a front / back detection sensor, a rotor in which four concave portions for accommodating parts are formed at intervals of 90 degrees, and a horizontal concave portion communicates with a horizontal conveyance path; A shaft body that has a passage communicating with the concave portion at the upper and lower positions of the rotor and that rotatably supports the rotor, a pulse motor that rotates the rotor forward and backward by 90 degrees, and a shooter that communicates with the downward concave portion of the rotor It has. This direction conversion means detects the front and back of the component housed in the laterally recessed portion of the rotor by the front and back detection sensor, and rotates the rotor 90 degrees forward and backward based on the detection result, thereby the direction of the component housed in the recessed portion The parts are transferred to the shooter via the shaft passage by the dead weight and air discharge pressure, or transferred to the shooter without passing through the shaft passage.

  Further, the directionality conversion means disclosed in Patent Document 5 includes a front and back detection sensor, a ring portion having eight slits for storing components at 45 ° intervals, and an upward slit communicating with the vertical transfer path. A disk portion that communicates with the slits at the left and right positions of the ring portion, and that rotatably supports the ring portion, a pulse motor that rotates the ring portion 90 degrees forward and backward, and a lateral direction of the ring portion And a horizontal transfer path communicating with the slit. This directivity conversion means detects the front and back of a part taken into the upward slit of the ring part by a front and back detection sensor, and rotates the ring part forward and reverse by 90 degrees based on the detection result, thereby detecting the part stored in the slit. The directionality is changed, and the component is sent out to the horizontal transfer path through the passage of the disk part by the supply air, or is sent out to the horizontal transfer path without passing through the path of the disk part.

  However, the directivity conversion means disclosed in Patent Documents 3 to 5 all convert the directionality by rotating the moving part forward and backward at a predetermined position. The part may be damaged due to the force applied to the part, and the speed at which the part is supplied to the outlet is reduced because it takes time to change the direction of the part. There is a fear.

Japanese Patent No. 3482324 Japanese Patent No. 3796971 JP 10-65393 A JP-A-11-348904 JP 2001-332893 A

  The object of the present invention is to provide a component having an appropriate direction without using a conventional direction conversion means, even when a component having directionality in the length, width, height, etc. that defines the component dimensions is targeted. It is to provide a bulk feeder that can reliably supply only the outlet to the outlet.

  In order to achieve the above object, the present invention is a bulk feeder that supplies separated parts aligned in a predetermined direction, and has directionality in the length, width, height, etc. that define the dimensions of the parts, In addition, it has a storage chamber for storing a large number of parts that can be attracted by magnetic force in a loose state, and a plurality of permanent magnets that can be moved in a predetermined circular orbit, and the magnetic force of the permanent magnets on the parts in the storage chamber A rotor that is rotatably arranged outside one side surface of the storage chamber, a rotor driving mechanism for rotating the rotor in a predetermined direction and stopping the rotation, and the rotor rotating in a predetermined direction A supply passage for moving in the same direction a part in a predetermined direction that has flowed through the intake port while being attracted by the permanent magnet, and the upper end of the supply passage is provided continuously, and the rotor rotates in a predetermined direction. When attracted to permanent magnet A recovery passage for moving a part in a predetermined direction fed from the supply passage and returning it to the storage chamber through the discharge port; and a rotor rotating in a predetermined direction provided on the boundary between the supply passage and the discharge passage. An outlet of the upper surface opening for taking out the electronic component of a predetermined direction supplied from the supply passage while being attracted by the permanent magnet, and detecting the directionality of the component while the component moves in the predetermined direction in the supply passage The directionality detection means for determining the directionality of the component in the predetermined direction based on the detection signal of the directionality detection means, the directionality determination means for determining whether the directionality of the component is appropriate, and the directionality determination means When it is determined that the directivity of the rotor is appropriate, the rotation of the rotor is stopped so that the permanent magnet attracting the part stops at the side position of the outlet, and the part is moved from the supply passage to the outlet. To supply Rotor so that the permanent magnet attracting the part passes through the side position of the outlet when it is determined that the directionality of the part is inappropriate by the supply control means and the directionality determination means Recovery control means for continuing the rotation and feeding the parts from the supply passage to the recovery passage.

  According to this bulk feeder, while the part is moving in a predetermined direction in the supply passage, it is determined whether the part is in an appropriate direction or an incorrect direction, and is determined to be in an appropriate direction. Sometimes, the rotor is stopped so that the permanent magnet attracting the part stops at the side position of the outlet, and the part is supplied to the outlet. The rotor can continue to rotate so that the permanent magnet that attracts the magnet passes through the side position of the outlet, and the parts can be sent from the supply passage to the recovery passage and returned to the storage chamber.

  In short, only parts with proper directionality can be supplied from the supply passage to the outlet, and parts with inappropriate directionality can be sent from the supply passage to the collection passage and returned to the storage chamber, eliminating the problems caused by previous direction conversion means. Thus, it is possible to supply the component with the appropriate direction to the take-out port at a high speed while avoiding damage to the component. In addition, since the components with the inappropriate orientation can be returned to the storage chamber and reused, the components stored in the storage chamber can be supplied to the outlet without leaving any excess.

  According to the present invention, even when a component having directionality in the length, width, height, etc. that defines the component dimensions is to be supplied, a component having an appropriate directionality without using a conventional direction conversion means. It is possible to provide a bulk feeder that can reliably supply only the outlet to the outlet.

  The above object and other objects, structural features, and operational effects of the present invention will become apparent from the following description and the accompanying drawings.

FIG. 1A to FIG. 1C are diagrams illustrating examples of shapes of parts to be supplied by the bulk feeder. It is a figure which shows the chip register which belongs to the shape of the components shown to FIG. 1 (A). 3A is a left side view of the bulk feeder according to the first embodiment of the present invention, FIG. 3B is a right side view thereof, and FIG. 3C is a top view thereof. 4A is a left side view of the left plate constituting the case shown in FIG. 3, FIG. 4B is a left side view of the central plate, FIG. 4C is a left side view of the right plate, and FIG. ) Is a partially enlarged cross-sectional view of FIG. 5A is a left side view of the rotor shown in FIG. 3, FIG. 5B is a top view thereof, and FIG. 5C is a sectional view taken along line S3-S3 in FIG. 5A. 6 (A) and 6 (B) are explanatory views of the attraction action of the chip register by the permanent magnet. FIG. 7 is a partially enlarged view of FIG. FIG. 8 is an enlarged cross-sectional view taken along line S1-S1 in FIG. FIG. 9 is an enlarged cross-sectional view taken along line S2-S2 of FIG. FIG. 10 is a diagram showing a positional relationship between the case and the rotor. FIG. 11 is a diagram showing a control system related to the supply operation of the bulk feeder shown in FIG. FIGS. 12A and 12B are diagrams showing a control flow relating to the supply operation of the bulk feeder shown in FIG. FIG. 13 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 14 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 15 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 16 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 17 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 18 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 19 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 20 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 21 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. 22 (A) to 22 (C) are left side views of a rotor that can be used in place of the rotor shown in FIG. 23 (A) to 23 (C) are cross-sectional views of the arc groove when the parts having the shapes shown in FIGS. 1 (B) and 1 (C) are supplied. 24A is a left side view of the bulk feeder according to the second embodiment of the present invention, FIG. 24B is a right side view thereof, and FIG. 24C is a top view thereof. 25A is a left side view of the left plate constituting the case shown in FIG. 24, FIG. 25B is a left side view of the center plate, FIG. 25C is a left side view of the right plate, and FIG. ) Is a partial enlarged cross-sectional view of FIG. 26A is a left side view of the rotor shown in FIG. 24, FIG. 26B is a top view thereof, and FIG. 26C is a sectional view taken along line S6-S6 of FIG. It is. FIG. 27 is a partially enlarged view of FIG. FIG. 28 is an enlarged sectional view taken along line S4-S4 of FIG. FIG. 29 is an enlarged cross-sectional view taken along line S5-S5 of FIG. FIG. 30 shows the positional relationship between the case and the rotor. FIG. 31 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 32 is an explanatory view of the supply operation of the bulk feeder shown in FIG. FIG. 33 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 34 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 35 is an explanatory view of the supply operation of the bulk feeder shown in FIG. FIG. 36 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. FIG. 37 is an explanatory diagram of the supply operation of the bulk feeder shown in FIG. 38A to 38C are left side views of a rotor that can be used instead of the rotor shown in FIG. 39 (A) to 39 (C) are cross-sectional views of the circular arc holes when the parts having the shapes shown in FIGS. 1 (B) and 1 (C) are to be supplied.

  Embodiments of the present invention will be described below, but the terms “match” and “identical” used in the description include dimensional tolerances, and do not imply perfect match or complete identity. Further, in the following description, the left, right, front and back in FIG. 3A and the directions corresponding to these in the other figures are referred to as front, back, left and right, respectively.

[First Embodiment]
3 to 23 show a first embodiment of the present invention.

  First, the mechanism of the bulk feeder that supplies the chip register CR shown in FIG. 2A will be described with reference to FIGS.

  As shown in FIGS. 3A to 3C, the bulk feeder includes a case 10, a support shaft 20, a bearing 30, a rotor 40, a reflective photosensor 50, and a rotor drive (not shown). Mechanism.

  The case 10 is configured by combining a left plate 11 shown in FIG. 4 (A), a center plate 12 shown in FIG. 4 (B), and a right plate 13 shown in FIG. 4 (C). It has a substantially rectangular parallelepiped shape that is smaller than the dimensions and the front and rear dimensions.

  As shown in FIG. 4A, the left plate 11 has a left-side outline that is substantially rectangular and has a predetermined thickness, and is made of metal or plastic. The left plate 11 has screw insertion holes 11a at four corners.

  As shown in FIG. 4B, the center plate 12 has the same left side view outline as the left plate 11 and has a larger thickness than the left plate 11, and is made of metal or plastic. The central plate 12 has screw holes 12a at four corners and a through hole 12b in the left-right direction at the center.

  The through-hole 12b includes a first arc surface 12b1 having a predetermined radius of curvature, a second arc surface 12b2 having a radius of curvature smaller than that of the first arc surface 12b1, and matching the center of curvature with the first arc surface 12b1, A plane 12b3 connecting the lower end of the first arcuate surface 12b1 and the lower end of the second arcuate surface 12b2, and a U-shaped part 12b4 formed between the upper end of the first arcuate surface 12b1 and the upper end of the second arcuate surface 12b2. Have. The radius of curvature of the first arc surface 12b1 is larger than the radius of curvature of the outer arc of the first arc groove 13b described later, and the radius of curvature of the second arc surface 12b2 is the radius of curvature of the inner arc of the first arc groove 13b described later. Smaller than.

  As shown in FIG. 4C, the right plate 13 has a left-side outline that is the same as the left plate 11 and has a smaller thickness than the center plate 12, and is made of aluminum or the like that can transmit the magnetic force of the permanent magnet. It is made of metal or plastic. The right plate 13 has screw insertion holes 13a at four corners, a first arc groove 13b on the left rear side, and a second arc groove 13c continuous with the upper end of the first arc groove 13b on the left front side. Having a third arc groove 13d continuous with the front end of the second arc groove 13c on the left side front side, a downward linear groove 13e continuous with the lower end of the third arc groove 13d on the left side front side, A recovery groove 13f continuous with the lower end of the groove 13e is provided on the front side of the left surface. Further, the right plate 13 has an outlet forming recess 13g on the upper surface, and a screw hole 13h used for screwing an inlet forming member 14 to be described later on the upper left side of the left surface. A groove 13i is provided at the upper rear side of the left surface, and a plurality (four in the figure) of screw holes 13J used for screwing the support shaft 20 are provided at the center of the right surface.

  The first arc groove 13b is formed in an angle range of about 180 degrees from the bottom to the top. Further, the centers of curvature of the outer arc and the inner arc of the first arc groove 13b coincide with each other, and the difference in the radius of curvature between the outer arc and the inner arc defines a width Wg described later. As shown in FIG. 4D, the first arc groove 13b is slightly larger than the height Hcr of the chip register CR and smaller than the width Wcr, and more than the width Wcr of the chip register CR. As shown by the broken line in the figure, the chip register CR is oriented in the length direction (the length Lcr is parallel to the traveling direction and the two surfaces defining the width Wcr are deep). It can be accommodated movably in two planes that define the height Dg (the opening side is parallel to the virtual plane), and the two planes that define the height Hcr are parallel to the two planes that define the width Wg.

  The second arc groove 13c is formed in an angle range of about 25 degrees from top to bottom continuously with the upper end of the first arc groove 13b. Further, the curvature radii of the outer arc and the inner arc of the second arc groove 13c coincide with the curvature radii of the outer arc and the inner arc of the first arc groove 13b, respectively, and the outer arc and the inner arc of the second arc groove 13c. The center of curvature coincides with the center of curvature of the outer arc and the inner arc of the first arc groove 13b. Further, the second arc groove 13c has the same width Wg and depth Dg as the first arc groove 13b, and the chip register CR can be movably accommodated in the length direction like the first arc groove 13b. .

  The third arc groove 13d is formed in an angle range of about 15 degrees from top to bottom continuously with the front end of the second arc groove 13c. The curvature radii of the outer arc and the inner arc of the third arc groove 13d are smaller than the curvature radii of the outer arc and the inner arc of the first and second arc grooves 13b and 13c, respectively, and the outer radius of the third arc groove 13d. The centers of curvature of the arc and the inner arc coincide with each other. Further, the third arc groove 13d has the same width Wg and depth Dg as the first arc groove 13b, and the chip register CR can be movably accommodated in the length direction like the first arc groove 13b. .

  The straight groove 13e is formed continuously downward with the lower end of the third arc groove 13d. Further, the linear groove 13e has the same width Wg and depth Dg as the first arc groove 13b, and the chip register CR can be movably accommodated in the length direction like the first arc groove 13b.

  The collection groove 13f is formed continuously downward with the lower end of the linear groove 13e. The collection groove 13f has the same depth Dg as the first arcuate groove 13b, and the front-rear interval gradually increases from top to bottom. Further, an inclined surface 13f1 is provided at the lower end of the recovery groove 13f. The inclined surface 13f1 is inclined downward from the bottom surface of the recovery groove 13f toward the left surface of the right plate 13.

  The outlet forming recess 13g is formed by cutting out a part of the upper surface of the right plate 13, specifically, on the boundary between the first arc groove 13b and the second arc groove 13c in the left-right direction with a predetermined longitudinal dimension. And has a predetermined depth reaching the first and second arc grooves 13b and 13c. In short, the uppermost point of the first arc groove 13b and the front and rear portions thereof are open upward through the outlet forming recess 13g.

  The detection groove 13i is formed so as to reach from the upper surface of the right plate 13 to the first arcuate groove 13b. The detection groove 13i has a depth smaller than the depth Dg of the first arcuate groove 13b and smaller than the width Wcr of the chip register CR.

  An intake port forming member 14 formed of metal or plastic is detachably attached to the left surface of the right plate 13 using a set screw FS. A screw insertion hole 14c is formed in the intake port forming member 14, and the set screw FS is screwed into the screw hole 13h of the right plate 13 through the screw insertion hole 14c. The intake port forming member 14 has an outer shape that matches the inner shape of the U-shaped portion 12b4 of the central plate 14, and has a narrow portion 14b that is narrowed by the arc surface 14a. Further, the thickness of the intake port forming member 14 matches the thickness of the central plate 12. Further, the radius of curvature of the arc surface 14a is larger than the radius of curvature of the outer arc of the first arc groove 13b of the right plate 13, and is the same as or slightly larger than the radius of curvature of the first arc surface 12b1 of the through hole 12b.

  To assemble the case 10 shown in FIG. 3, first, the center plate 12 shown in FIG. 4B is overlaid on the left surface of the right plate 13 shown in FIG. A set screw FS is inserted into the hole 13a, and each set screw FS is screwed into the screw hole 12a of the center plate 12 to couple them together. When the central plate 12 is superimposed on the left surface of the right plate 13, the intake port forming member 14 is fitted into the U-shaped portion 12 b 4 of the central plate 12.

  Then, the left plate 11 shown in FIG. 4A is overlaid on the left surface of the center plate 12, the set screws FS are inserted into the screw insertion holes 11 a of the left plate 11, and the set screws FS are attached to the center plate 12. Both are coupled by screwing into the screw holes 12a. Although not described, the case 10 can be assembled by a method other than the above.

  7 to 9, the right opening of the through hole 12b of the center plate 12 is closed by the right plate 13, and the left opening of the through hole 12b is closed by the left plate 11, as shown in FIGS. Further, the upper part of the left opening of the first arc groove 13 b of the right plate 13 is closed by the through hole non-forming portion of the central plate 12 and the narrow width portion 14 b of the intake port forming member 14. Further, the left opening of the second arc groove 13c of the right plate 13, the left opening of the third arc groove 13d of the right plate 13, the left opening of the straight groove 13e of the right plate 13, and the outlet forming recess of the right plate 13 The left side opening of 13 g and the left side opening of the detection groove 13 i of the right plate 13 are closed by the through hole non-forming portion of the central plate 12.

  That is, in the case 10, the first arc surface 12 b 1, the second arc surface 12 b 2 and the flat surface 12 b 3 of the through hole 12 b, the arc surface 14 a and the narrow surface portion 14 b of the intake port forming member 14, A storage chamber 15 is defined which is surrounded by a part of the right surface of the plate 11 and a part of the left surface of the right plate 13 and has a substantially circular outline when viewed from the left. Further, in the case 10, an arc-shaped guide groove 16 is formed by a portion (an angle range portion of about 150 degrees) where the left opening of the first arc groove 13b is not closed. Since the center of curvature of the outer arc and the inner arc of the guide groove 16 coincides with the center of curvature of the first arc surface 12b1 of the through hole 12b, the outer arc of the guide groove 16 and the first arc surface 12b1 of the through hole 12b The interval is constant along the guide groove 16. Further, an arc-shaped supply passage 17 is formed in the case 10 by a portion (an angle range portion of about 30 degrees) where the left opening of the first arc groove 13b is closed, and the rear end of the supply passage 17 An intake port 17a is formed as an inlet. Further, in the case 10, a recovery passageway 18 that curves forward and downward by the second arc groove 13c, the third arc groove 13d, and the linear groove 13e, and gradually moves inward from the track of a permanent magnet 40d described later. Is formed continuously with the upper end of the supply passage 17, and a discharge port 18 a serving as an outlet is formed at the lower end of the recovery passage 18. Since the left opening of the collection groove 13 f communicating with the discharge port 18 a of the collection passage 18 is not blocked by the through hole non-forming portion of the central plate 12, the left opening opens into the storage chamber 15. Furthermore, the upper surface of the case 10 is provided on the boundary between the supply passage 17 and the recovery passage 18 and has an opening 19 having an upper surface opening and a left and right size sufficient to take out the chip register CR to the outside. Is formed. Further, a detection port (hereinafter referred to as a detection port 13i using the same reference numeral as the detection groove 13i) is formed on the upper surface of the case 10 from the upper surface to the supply passage 17.

  As shown in FIG. 9, the support shaft 20 has a shaft body 20a and a flange 20b provided at the left end of the shaft body 20a, and is made of metal or plastic. The support shaft 20 has a set screw (not shown) inserted into a plurality (four in the drawing) of screw insertion holes (not shown) provided in the flange portion 20b. It is attached to the center of the right surface of the right plate 13 by screwing it into the hole 13j and connecting both. The center of the shaft main body 20a of the support shaft 20 after attachment coincides with the center of curvature of the outer arc and the inner arc of the first arc groove 13b of the right plate 13.

  The bearing 30 is composed of a radial type ball bearing, and as shown in FIG. 9, the inner ring is fitted and attached to the shaft body 20 a of the support shaft 20.

  As shown in FIGS. 5A to 5C, the rotor 40 includes a cylindrical portion 40a, a flange portion 40b provided at the left end of the cylindrical portion 40a, and the cylindrical portion 40a and the flange portion 40b in the left-right direction. A center hole 40a1 penetrating through and a ring-shaped overhanging portion 40c provided on the outer periphery of the left surface of the flange portion 40b, and is formed of a metal such as aluminum or plastic that can transmit the magnetic force of the permanent magnet. .

  The annular projecting portion 40c of the rotor 40 has a columnar shape and a total of eight permanent magnets 40d having magnetic poles on the circular surfaces at both ends, each center being concentric with the rotation center of the rotor 40. They are provided at equiangular intervals (angular interval θ = 45 degrees) so as to be positioned on the virtual circle VC. Each permanent magnet 40d is fitted in and attached to a hole having a predetermined depth formed in the left surface of the annular projecting portion 40c, and one magnetic pole surface is exposed in a substantially flush state on the left surface of the rotor 40. In short, in this rotor 40, a total of eight permanent magnets 40d are arranged in a form in which a single permanent magnet 40d is arranged at equal angular intervals (angular interval θ = 45 degrees) along the virtual circle VC. A region where the permanent magnet 40d is not provided exists between the adjacent permanent magnets 40d. The polarities of the magnetic pole surfaces on the left surface side of the rotor 40 of each permanent magnet 40d may all be the same, or may be alternately different along the virtual circle VC. Each permanent magnet 40d has a magnetic force sufficient to attract the chip register CR in the storage chamber 15 toward the guide groove 16, for example, a surface magnetic force of 2000 to 4000 gauss.

  As shown in FIGS. 6 (A) and 6 (B), each permanent magnet 40d has magnetic poles on the circular surfaces at the left and right ends, so that the magnetic field lines are the most dense, in other words, the magnetic field is the strongest. (Hereinafter referred to as magnetic center MFC) is the center of the magnetic pole surface. When a chip resistor CR having a dimensional relationship of length Lcr> width Wcr> height Hcr is directly attracted to the permanent magnet 40d, the chip resistor CR has a direction in which one side surface in the width direction is in contact with the magnetic pole surface, in other words, the length Tends to be adsorbed in a direction parallel to the magnetic pole surface. In addition, since the magnetic center MFC is at the center of the magnetic pole surface, the longitudinal center of the chip resistor CR attracted to the magnetic pole surface substantially coincides with the magnetic force center MFC. In order to positively obtain such an adsorption action, it is preferable to make the diameter Rpm of the magnetic pole face of the permanent magnet 40d smaller than the length Lcr of the chip resistor CR. However, the permanent magnet 40d having a diameter Rpm of the length Lcr or more is preferably used. Even if it is used, specifically, the same adsorption action as described above can be sufficiently obtained even if the permanent magnet 40d having the diameter Rpm of about 10 times the length Lcr is used.

  As shown in FIG. 9, the rotor 40 is attached by fitting the center hole 40 a 1 into the outer ring of the bearing 30. In this attached state, the center of the virtual circle VC where the center of the left magnetic pole surface of each permanent magnet 40d is located coincides with the center of curvature of the outer arc and inner arc of the first arc groove 13b of the right plate 13. Further, the left surface of the rotor 40 faces the right surface of the right plate 13 in parallel through a gap CL (see FIG. 10) that is as small as possible that allows the rotor 40 to rotate.

  That is, the rotor 40 can rotate about the shaft body 20a of the support shaft 20, and each permanent magnet 40d is rotated along the circular orbit corresponding to the virtual circle VC as the rotor 40 rotates. The recovery passage 18 can move along the portion corresponding to the second arc groove 13c.

  As can be seen from FIG. 10, the positional relationship between each permanent magnet 40 d and the guide groove 16 when the rotor 40 rotates is preferably such that the center of the magnetic pole face facing the guide groove 16 faces into the guide groove 16. Is set so that the center of the magnetic pole surface coincides with the center of the width Wg of the guide groove 16. Of course, the positional relationship between each permanent magnet 40d and the guide groove 16 is such that if the center of the magnetic pole face facing the guide groove 16 faces into the guide groove 16, the center of the magnetic pole face is the center of the width Wg of the guide groove 16. It may be set so as to be slightly deviated from the inside to the outside. Each permanent magnet 40d during rotation of the rotor 40, even in a part of the supply passage 17 formed from the first arc groove 13b common to the guide groove 16 and the recovery passage 18 formed from the second arc groove 13c. The positional relationship between the supply passage 17 and a part of the recovery passage 18 is the same as described above. This position can be set by changing the radius of curvature of the virtual circle VC in which the center of the magnetic pole surface of each permanent magnet 40d is located, as well as the outer and inner arcs of the first and second arc grooves 13b and 13c of the right plate 13. This can be done by changing the radius of curvature of the arc.

  Further, as can be seen from FIG. 8, the positional relationship between each permanent magnet 40 d and the storage chamber 15 during rotation of the rotor 40 is such that the magnetic pole surface facing the guide groove 16 is on the guide groove 16 on the right side of the storage chamber 15 and both sides thereof. Preferably, all of the surfaces of the permanent magnet 40d facing the guide groove 16 are the right surface of the storage chamber 15 so that all of the magnetic pole surfaces are opposed to the guide groove 16 on the right surface of the storage chamber 15 and both sides thereof. Is set so as to oppose the guide groove 16 and both sides thereof. Of course, the positional relationship between each permanent magnet 40d and the storage chamber 15 is such that the magnetic pole surface facing the guide groove 16 faces the guide groove 16 on the right side of the storage chamber 15 and both sides thereof. The portions except for the outer edge portions of the facing magnetic pole surfaces may be set to face the guide groove 16 on the right surface of the storage chamber 15 and both sides thereof. This position can be set by changing the radius of curvature of the first circular arc surface 12b1 of the through hole 12b of the central plate 12, and also changing the radius of curvature of the virtual circle VC where the center of the magnetic pole surface of each permanent magnet 40d is located. Or by changing the radius of curvature of the outer arc and the inner arc of the first arc groove 13b of the right plate 13.

  The reflective photosensor 50 includes a light emitting element such as a light emitting diode (not shown), a light receiving element such as a phototransistor (not shown), and an input / output terminal (not shown) connected thereto. The light emitting element and the light receiving element are arranged such that the light emitting part and the light receiving part are exposed on the lower surface of the sensor body. As shown in FIG. 16, the photosensor 50 is attached to the upper surface of the case 10 so that the light emitting part and the light receiving part are located above the detection opening 13i, and the light F1 emitted from the light emitting part is detected by the detection opening. 13i is guided to the supply passage 17, and the reflected light F2 is guided to the light receiving unit through the detection port 13i.

  The rotor drive mechanism (not shown) is for rotating the rotor 40 in a predetermined direction and stopping the rotation, and has at least a motor 62 (see FIG. 11) and a drive gear attached to the motor shaft. is doing. If a substitute part of a gear is formed on the outer peripheral surface of the rotor 40, or another gear is fixed to the rotor 40 and the drive gear is engaged with the gear, the rotor 40 is rotated in a desired direction by motor operation. The rotation of the rotor 40 can be stopped by stopping the motor operation.

  Next, referring to FIG. 11, the control system related to the supply operation of the bulk feeder shown in FIG. 3 will be described.

  This control system includes the photosensor 50 described above, the detector 61 for the photosensor 50, the motor 62 of the rotor drive mechanism described above, the driver 63 for the motor 62, and the controller 64.

  The detector 61 supplies electric power necessary for the operation of the photosensor 50 and sends a detection signal obtained by amplifying or processing the received light signal from the light receiving element as necessary to the controller. The driver 63 controls the rotation of the motor 62 based on the drive signal from the controller 64. The controller 62 is composed of, for example, a microcomputer, and sends a drive signal related to rotation control of the motor 62 to the driver 63 in accordance with a supply operation control program (see FIG. 12) based on the detection signal from the detector 61.

  Next, the supply operation of the bulk feeder shown in FIG. 3 will be described with reference to FIGS.

  When supplying the components, as shown in FIG. 13, a large number of chip registers CR are stored in the storage chamber 15 of the case 10 in a loose state. This storage is performed through a replenishing port (not shown) with an open / close lid provided in the case 10. If the chip register CR is stored too much, the probability that the chip register CR is taken into the take-in port 17a is lowered. Therefore, the maximum storage level of the chip register CR is about ½ of the height of the storage chamber 15. It is preferable. For example, in the case of a chip register CR having a length Lcr of 1.0 mm, a case having the same size as that of FIG. 3 is formed, and the maximum storage level is about ½ of the height dimension of the storage chamber 15. About 10,000 chip registers CR can be stored.

  After the chip register CR is stored in the storage chamber 15, the rotor 40 is rotated counterclockwise by the motor 62 as indicated by a broken line arrow in FIG. 13. At the same time as the rotation of the rotor 40 is started, the operation of the photosensor 50, that is, light emission from the light emitting element and light reception by the light receiving element are started.

  In the process in which the permanent magnet 40d moves upward along the guide groove 16 with the rotation of the rotor 40, a plurality of chip registers among the chip registers CR stored in the storage chamber 15 are shown in FIG. The CR is attracted toward the guide groove 16 by the permanent magnet 40d, and the plurality of chip registers CR move upward along the guide groove 16 while being attracted to the permanent magnet 40d.

  As described above, the positional relationship between each permanent magnet 40d and the guide groove 16 during rotation of the rotor 40 is set so that the center of the magnetic pole face facing the guide groove 16 faces the guide groove 16, and The positional relationship between each permanent magnet 40d and the storage chamber 15 during rotation of the rotor 40 is set so that the magnetic pole surface facing the guide groove 16 faces the guide groove 16 on the right surface of the storage chamber 15 and both sides thereof. Therefore, the plurality of chip resistors CR attracted in the direction of the guide groove 16 by the permanent magnet 40d are attracted with an outline that covers the opposing region of the magnetic pole surface of the permanent magnet 40d facing the guide groove 16, and the plurality of chip resistors CR are attracted. The chip register CR is strongly attracted into the guide groove 16, and several chip registers CR are accommodated in the guide groove 16 by this action. Since the guide groove 16 here is formed by a part of the first arc groove 13 b, the chip register CR accommodated in the guide groove 16 is configured to be adsorbed on the bottom surface of the guide groove 16. Become.

  In other words, more chip registers CR can be attracted toward the guide groove 16 by the permanent magnet 40d, and a plurality of attracted chip registers CR can be accommodated in the guide groove 16 with high probability. The probability of taking a chip register CR into a later-described take-in port 17a can be increased. The direction of the chip register CR accommodated in the guide groove 16 is two patterns, that is, the length direction (see FIG. 14) and the direction different from the length direction by 90 degrees (see FIG. 15), and is not accommodated in the guide groove 16. The direction of the chip register CR is random (meaning that the directions are different).

  The plurality of chip registers CR including the chip register CR accommodated in the guide groove 16 move further upward along the guide groove 16 as the permanent magnet 40d moves upward to reach the intake port 17a. At this time, when the foremost side of the several chip registers CR accommodated in the guide groove 16 is the “chip register CR accommodated in the length direction in the guide groove 16”, as shown in FIG. The chip register CR flows in the same direction into the intake port 17a. Further, “the chip register CR housed in the guide groove 16 in a direction different from the length direction in the guide groove 16” and “the guide groove” located behind the “chip register CR housed in the guide groove 16 in the length direction”. As shown in FIG. 15, the chip register CR which is not accommodated in 16 is in contact with the rear surface of the narrow portion 14b of the intake port forming member 14 on the left side of the intake port 17a and the right side of the intake port 17a. When the permanent magnet 40d passes and the attractive force decreases, it falls downward.

  On the other hand, when the foremost side of several chip registers CR accommodated in the guide groove 16 is “the chip register CR accommodated in the guide groove 16 in a direction different from the length direction by 90 degrees”, the rear side Even if there is a “chip register CR accommodated in the length direction in the guide groove 16”, the flow of the chip register CR into the intake port 17 a is “a direction that is 90 degrees different from the length direction in the guide groove 16. Is basically blocked by the chip register CR ". Further, the “chip register CR accommodated in the guide groove 16 in a direction different from the length direction by 90 degrees” and the “chip register CR not accommodated in the guide groove 16” include an intake port 17a as shown in FIG. It comes into contact with the rear surface of the narrow portion 14b of the intake port forming member 14 on the left side, and drops downward when the permanent magnet 40d passes through the right side of the intake port 17a and the attractive force is reduced. However, “the chip register CR accommodated in the guide groove 16 in the length direction” exists behind the “chip register CR accommodated in the guide groove 16 in a direction different from the length direction by 90 degrees”, and When the “chip register CR accommodated in the guide groove 16 in a direction different from the length direction by 90 degrees” falls, the direction of the “chip register CR accommodated in the length direction in the guide groove 16” changes. When it does not occur, the “chip register CR accommodated in the length direction in the guide groove 16” flows into the intake port 17a.

  In the process in which the permanent magnet 40d moves upward along the supply passage 17 as the rotor 40 rotates, as shown in FIG. 16, the length-oriented chip resistor CR that has flowed into the supply passage 17 through the intake port 17a. Is moved further upward in the same direction in the supply passage 17 while being attracted by the permanent magnet 40d, and passes below the detection port 13i in the middle of the movement.

  As described above, the positional relationship between each permanent magnet 40d and the supply passage 17 during rotation of the rotor 40 is set so that the center of the magnetic pole face facing the supply passage 17 is directed into the supply passage 17. Since the chip register CR is attracted so that the center in the length direction thereof substantially coincides with the center of the magnetic pole surface of the permanent magnet 40d (magnetic center MFC), the chip register CR moving upward in the supply passage 17 is moved from the left side. When viewed, the chip resistor CR moves upward in the supply passage 17 while maintaining a suction state in which the center in the length direction substantially coincides with the center of the magnetic pole surface of the permanent magnet 40d (magnetic center MFC). Become. Further, since the depth of the detection port 13i is smaller than the width Wcr of the chip register CR, the movement of the chip resistor CR in the length direction is obstructed by the lower end opening of the detection port 13i when moving upward in the supply passage 17. It is never done.

  Further, when the chip register CR moving in the supply passage 17 passes below the detection port 13i, the light F1 emitted from the light emitting portion of the photosensor 50 is irradiated to the upper surface of the chip register CR through the detection port 13i, And the reflected light F2 is received by the light-receiving part of the photosensor 50 through the detection port 13i.

  Whether or not the chip register CR moving in the supply passage 17 has passed below the detection port 13i can be determined based on the detection signal of the detector 61 for the photosensor 50. Based on the signal, the directionality of the two surfaces that define the height Hcr of the chip register CR, that is, whether the resistance film CRc and the protective film CRd are facing upward or downward is determined (FIG. 12A). (See steps ST11 and ST12). The discrimination result here is stored in correspondence with the permanent magnet 40d attracting the chip register CR.

  Since the chip register CR includes the resistance film CRc and the protective film CRd covering the resistance film CRc on one of the two surfaces defining the height Hcr, the surface on which the resistance film CRc and the protection film CRd exist and the other surface are external electrode CRa. The color of the area except for is different. As an example, a chip resistor in which the protective film CRd is transparent or translucent and the main body CRb is made of alumina and the resistance film CRc is made of ruthenium oxide is outside the surface where the resistance film CRc and the protection film CRd exist. The color of the region excluding the electrode CRa is blackish, and the color of the region excluding the external electrode CRa on the other surface is whitish.

  Therefore, when the reflectance of the external electrode CRa is the same as that of the resistance film CRc and the protection film CRd, the change in the amount of light received by the photosensor 50 when the resistance film CRc and the protection film CRd are facing upward is shown in FIG. The change in the amount of light received by the photosensor 50 when the resistance film CRc and the protective film CRd face downward is as shown in FIG. Depending on the reflectivity of the external electrode CRa, the reflectivity of the resistance film CRc and the protective film CRd, and the reflectivity of the main body CRb, a change in the amount of received light different from that in FIGS. Whether the directionality is appropriate (the state in which the resistance film CRc and the protective film CRd are facing up) or the directionality is incorrect (in the state in which the resistance film CRc and the protective film CRd are facing downward) is the resistance film CRc and This can be sufficiently determined by the change in the amount of received light depending on the presence or absence of the protective film CRd.

  When it is determined that the chip resistor CR that has passed through the lower side of the detection port 13i is in the appropriate direction (the resistance film CRc and the protective film CRd are facing upward), as shown in FIGS. In order to supply the chip resistor CR from the supply passage 17 to the outlet 19, the permanent magnet 40d attracting the chip resistor CR is taken to the right side of the outlet 19, preferably the center of the magnetic pole surface of the permanent magnet 40d is the outlet. The rotation of the rotor 40 is stopped so as to stop at a position coinciding with the center of the front-rear direction 19 (see steps ST21 and ST22 in FIG. 12B).

  As described above, the positional relationship between each permanent magnet 40d and a part of the supply passage 17 and the recovery passage 18 during rotation of the rotor 40 is such that the center of the magnetic pole surface facing the supply passage 17 and a part of the recovery passage 18 is located. It is set so as to face the supply passage 17 and a part of the recovery passage 18, and the outlet 19 is provided on the boundary between the supply passage 17 and the recovery passage 18. When the attracted permanent magnet 40 d is stopped at the right position of the outlet 19, the chip register CR stops at the lower side of the outlet 19.

  If the tip register CR is displaced forward from the lower side of the outlet 19 due to inertia when the rotation of the rotor 40 is stopped, the rotation speed is gradually or stepwise reduced before the rotation of the rotor 40 is stopped. Processing may be performed. By performing such processing, it is possible to prevent the position of the chip register CR supplied to the outlet 19 from being shifted.

  The chip register CR is taken out from the bulk feeder in the state shown in FIGS. 18 and 19, that is, in the state where the rotation of the rotor 40 is stopped. Specifically, after the suction nozzle (not shown) of the mounter (electronic component mounting device) is lowered toward the outlet 19 and the chip register CR that is stationary below is sucked through the outlet 19, This is done by raising the suction nozzle.

  After the chip register CR supplied to the outlet 19 is taken out, the rotation of the rotor 40 is resumed. The removal of the chip register CR from the outlet 19 can be detected by sensing whether or not the chip register CR is attracted by the suction nozzle, whether or not the chip register CR remains in the outlet 19, and the rotor 40 based on the sensing result. The rotation can be easily resumed.

  On the other hand, when it is determined that the chip resistor CR that has passed through the lower side of the detection port 13i has an inappropriate directionality (a state in which the resistance film CRc and the protective film CRd face downward), as shown in FIG. In order to send the chip register CR from the supply passage 17 to the recovery passage 18, the rotation of the rotor 140 is continued so that the permanent magnet 40d attracting the chip register CR passes through the right side position of the outlet 19 (FIG. 12). (See steps ST21 and ST23 of (B)).

  In the process in which the permanent magnet 40d moves downward along the portion corresponding to the second arc groove 13c of the recovery passage 18 with the rotation of the rotor 40, as shown in FIG. Is fed into the recovery passage 18 and moves downward in the same direction in the portion corresponding to the second arc groove 13c of the recovery passage 18 while the chip register CR is attracted to the permanent magnet 40d.

  Further, in the process in which the permanent magnet 40d moves further downward as the rotor 40 rotates, the permanent magnet 40d moves from the portion corresponding to the third arc groove 13d and the portion corresponding to the linear groove 13e of the recovery passageway 18, as shown in FIG. The suction force with respect to the chip register CR decreases gradually and the chip register CR moves downward by its own weight in the portion corresponding to the third arc groove 13d and the portion corresponding to the linear groove 13e of the recovery passage 18 as the suction force decreases. Then, it falls into the collection groove 13f from the discharge port 18a at the lower end of the collection passage 18. Since the front-rear interval of the collection groove 13f is wider than the length Lcr of the chip register CR, the chip register CR that has fallen into the collection groove 13f from the discharge port 18a has a random posture in the collection groove 13f. Then, it is returned into the storage chamber 15 directly from the collection groove 13f or while being guided by the inclination of the inclined surface 13f1.

  Since the rotor 40 of the bulk feeder is provided with a total of eight permanent magnets 40d at equal angular intervals (angular interval θ = 45 degrees), the permanent magnets 40d moving along the supply passage 17 must always have chip resistors. If the CR is sucked in the length direction, the probability register indicates that the chip register CR having the proper direction can be supplied to the outlet 19 every time the rotor 40 rotates 90 degrees.

  Thus, according to the above-described bulk feeder, the chip register CR is in the proper direction (the resistance film CRc and the protective film CRd face upward while the chip register CR moves in the length direction in the supply passage 17. Or the inappropriate direction (the state where the resistance film CRc and the protective film CRd are facing downward), and if the direction is determined to be appropriate, the chip register CR is sucked. The rotation of the rotor 40 is stopped so that the permanent magnet 40d is stopped at the right position of the outlet 19, and the chip register CR is supplied to the outlet 19. On the other hand, when it is determined that the directionality is inappropriate, the tip The rotation of the rotor 40 is continued so that the permanent magnet 40d attracting the resistor CR passes through the right side position of the outlet 19, and the chip resistor CR is recovered from the supply passage 17. By feeding 18 can be returned to storage chamber 15.

  In short, only the chip register CR having the proper direction can be supplied from the supply passage 17 to the outlet 19, and the chip register CR having the wrong direction can be sent from the supply passage 17 to the recovery passage 18 and returned to the storage chamber 15. Therefore, it is possible to eliminate the problem caused by the directivity conversion means and supply the chip register CR having the proper direction to the take-out port 19 at a high speed while avoiding damage to the chip register CR. In addition, since the chip register CR having an inappropriate direction can be returned to the storage chamber 15 and reused, the chip register CR stored in the storage chamber 15 can be supplied to the outlet 19 without leaving any excess.

  Further, according to the above-described bulk feeder, the supply passage 18 is provided with a configuration in which the discharge port 18a side (corresponding to the third arc groove 13d and the straight groove 13e) is separated from the track of the permanent magnet 40d. Since the chip register CR having an improper direction sent from the passage 17 to the recovery passage 18 can be moved downward by its own weight, the chip register CR having an improper direction sent from the supply path 17 to the recovery passage 18 is provided. Can be prevented from stopping in the collection passage 18 by the attractive force of the permanent magnet 40d, and can be smoothly returned to the storage chamber 15.

  Further, according to the above-described bulk feeder, the positional relationship between each permanent magnet 40d and the supply passage 17 and a part of the recovery passage 18 during rotation of the rotor 40 is a magnetic pole surface facing the supply passage 17 and a part of the recovery passage 18. Is set so that the center thereof is directed into the supply passage 17 and a part of the recovery passage 18, and the outlet 19 is provided on the boundary between the supply passage 17 and the recovery passage 18. When the permanent magnet 40d attracting the resistor CR is stopped at the right position of the outlet 19, the chip resistor CR is stopped at the lower side of the outlet 19 and the chip from the outlet 19 by the suction nozzle of the mounter is used. The register CR can be taken out satisfactorily.

  In the above description, the rotor 40 having a total of eight permanent magnets 40d at equal angular intervals is shown. However, instead of the rotor 40, the rotor 40-1 shown in FIGS. The same supply operation as described above can be realized even with ˜40-3.

  In the rotor 40-1 shown in FIG. 22A, a total of 16 permanent magnets 40d are arranged at equal angular intervals (angular interval θ = 22.5 degrees) along the virtual circle VC. The permanent magnets 40d are arranged, and there are areas where the permanent magnets 40d are not provided between the adjacent permanent magnets 40d. The polarities of the magnetic pole surfaces on the left surface side of the rotor 40-1 of each permanent magnet 40d may all be the same, or may be alternately different along the virtual circle VC.

  In the rotor 40-2 shown in FIG. 22 (B), a permanent magnet group PMG formed by arranging five permanent magnets 40d in an arc shape is equiangularly spaced along the virtual circle VC (angular spacing θ = Forty permanent magnets 40d are arranged in a form of being arranged at 45 degrees, and there are regions where the permanent magnets 40d are not provided between the adjacent permanent magnet groups PMG. The five permanent magnets 40d constituting each permanent magnet group PMG are arranged such that adjacent permanent magnets 40d are in a contact state or a non-contact state. Further, the polarities of the magnetic pole surfaces on the left surface side of the rotor 40-2 of each permanent magnet 40d may all be the same, or may be alternately different along the virtual circle VC.

  In the rotor 40-3 shown in FIG. 22C, a permanent magnet group PMG formed by arranging 17 permanent magnets 40d in an arc shape is equiangularly spaced along the virtual circle VC (angular spacing θ = A total of 68 permanent magnets 40d are arranged in the form of being arranged at 90 degrees, and there are regions where the permanent magnets 40d are not provided between the adjacent permanent magnet groups PMG. The angle range θ1 of each permanent magnet group PMG is about 22.5 degrees, and the 17 permanent magnets 40d constituting each permanent magnet group PMG are arranged such that adjacent permanent magnets 40d are in a contact state or a non-contact state. Yes. Moreover, the polarities of the magnetic pole surfaces on the left surface side of the rotor 40-3 of each permanent magnet 40d may all be the same, or may be alternately different along the virtual circle VC.

  The rotors 40 and 40-1 and the rotors 40-2 and 40-3 are different in the arrangement of the permanent magnets 40d, but the speed at which the chip register CR having the proper direction is supplied to the outlet 19 is basically the same. It depends on at least one of the rotor rotational speed and the number of permanent magnets. In other words, in any arrangement, if the number of permanent magnets is selected in accordance with the rotor rotation speed or the rotor rotation speed is selected in accordance with the number of permanent magnets, a chip having a proper direction at a desired speed is obtained. A register CR can be supplied to the outlet 19.

  In the above description, the permanent magnet 40d has a cylindrical shape, but other shape permanent magnets, for example, a quadrangular prism shape and a rectangular magnetic pole on both ends, etc. Even if the permanent magnet 40d is used instead of the permanent magnet 40d, the same supply operation as described above can be realized.

  Further, in the above description, the chip register CR belonging to the shape of the component EC1 shown in FIG. 1A is shown as the supply target. However, the length, width, height, and the like that define the component dimensions are directed. As long as it is a component that can be attracted by magnetic force, other components belonging to the shape of the component EC1 can be supplied, as shown in FIGS. 1B and 1C. Parts that belong to the shapes of the shown parts EC2 and EC3 can be supplied.

  FIG. 23A and FIG. 23B show the first arc grooves 13b-1 and 13b-2 when a part belonging to the shape of the part EC2 shown in FIG. The first circular groove 13b-1 shown in FIG. 23A has a width Wg and a depth Dg that are slightly larger than the width W2 or height H2 of the component EC2 and smaller than the end face diagonal dimension D2. As shown by the broken line in the figure, the component EC2 is oriented in the length direction (the length L2 is parallel to the traveling direction, the two surfaces defining the width W2 and the two surfaces defining the height H2 are the depth Dg. Can be accommodated movably on two surfaces (the opening side is a virtual surface) and a direction parallel to the two surfaces defining the width Wg. Although not shown, the cross-sectional shapes of the second arc groove, the third arc groove, and the straight groove when the first arc groove 13b-1 is used are the same as those of the first arc groove 13b-1.

  On the other hand, the first circular groove 13b-2 shown in FIG. 23B has a width Wg and a depth Dg that are slightly larger than the end face diagonal dimension D2 of the component EC2 and smaller than the length L2. As shown by a broken line in the drawing, the component EC2 is oriented in the length direction (the length L2 is parallel to the traveling direction, the two surfaces defining the width W2 and the two surfaces defining the height H2 have a depth Dg. It can be accommodated movably on two defined surfaces (the opening side is a virtual surface) and two surfaces defining the width Wg. Although not shown, the cross-sectional shapes of the second arc groove, the third arc groove, and the straight groove when the first arc groove 13b-2 is used are the same as those of the first arc groove 13b-2. When this first arc groove 13b-2 is used, two surfaces defining the width W2 and two surfaces defining the height H2 of the component EC2 are two surfaces defining the depth Dg (the opening side is a virtual surface). And can be accommodated in the guide groove 16 in a direction non-parallel to the two surfaces defining the width Wg. However, the component EC2 itself takes a posture in the process of moving in the guide groove 16 or the process of moving in the supply passage 17. Since the displacement to be stabilized occurs, the component EC2 defines two surfaces defining the width W2 and two surfaces defining the height H2 defining two surfaces (the imaginary surface on the opening side) and the width Wg. It passes under the detection port 13i in a direction parallel to the two surfaces.

  FIG. 23C shows the first arc groove 13b-3 in the case where a part belonging to the shape of the part EC3 shown in FIG. The first arcuate groove 13b-3 has a width Wg and a depth Dg that are slightly larger than the diameter R3 of the component EC and smaller than the length L3. The component EC3 can be accommodated so as to be movable in the length direction (the length L3 is parallel to the traveling direction). Although not shown, the cross-sectional shapes of the second arc groove, the third arc groove, and the linear groove when the first arc groove 13b-3 is used are the same as those of the first arc groove 13b-3.

  Further, in the above description, the guide groove 16 is formed in an angle range of about 150 degrees. However, even if the angle range of the guide groove 16 is slightly increased or decreased without changing the upper end position, the same supply operation as described above is performed. Can be realized. Further, although the supply passage 17 is formed in an angle range of about 30 degrees, the same supply operation as described above is realized even if the angle range of the supply passage 17 is slightly increased or decreased without changing the position of the outlet 19. it can. Further, although a recovery passage 18 having a shape that curves forward and downward is shown, the recovery passage 18 is provided as long as the chip register CR having an inappropriate direction sent from the supply passage 17 can be returned to the storage chamber 15. Even if the left side view shape is appropriately changed, the same supply operation as described above can be realized. In addition, a recovery groove 13f that communicates with the discharge port 18a is formed below the discharge port 18a of the recovery passage 18, but the left opening is open in the storage chamber 15 in the storage chamber 15. Then, even if the left view shape of the recovery groove 13f is appropriately changed, the same supply operation as described above can be realized, and the configuration excluding the recovery groove 13f, for example, the lower end of the linear groove 13e constituting the recovery passage 18 is provided. The same supply operation as described above can be realized by adopting a configuration that extends into the storage chamber 15 and returns the chip register CR from the extended portion into the storage chamber 15.

[Second Embodiment]
24 to 39 show a second embodiment of the present invention.

  First, the mechanism of the bulk feeder that supplies the chip register CR shown in FIG. 2A will be described with reference to FIGS. Note that FIG. 6 and FIG. 16 used in the description of the first embodiment are appropriately referred to in this description.

  As shown in FIGS. 24A to 24C, the bulk feeder includes a case 110, a support shaft 120, a bearing 130, a rotor 140, a reflective photosensor 150, and a rotor drive (not shown). Mechanism.

  The case 110 is configured by combining a left plate 111 shown in FIG. 25 (A), a center plate 112 shown in FIG. 25 (B), and a right plate 113 shown in FIG. 25 (C). It has a substantially rectangular parallelepiped shape that is smaller than the dimensions and the front and rear dimensions.

  As shown in FIG. 25A, the left plate 111 has a predetermined rectangular thickness as a left-side view outline, and is made of metal or plastic. The left plate 111 has screw insertion holes 111a at four corners.

  As shown in FIG. 25 (B), the center plate 112 has a left-side outline that is the same as the left plate 111 and has a larger thickness than the left plate 111, and is made of metal or plastic. The central plate 112 has screw holes 112a at four corners and left and right through holes 112b on the rear side, and a plurality (four in the figure) of screw holes 112c used for screwing the support shaft 120. In the center.

  The through-hole 112b includes a first arc surface 112b1 having a predetermined radius of curvature, a second arc surface 112b2 having a radius of curvature smaller than that of the first arc surface 112b1, and matching the center of curvature with the first arc surface 112b1, A first plane 112b extending upward from the lower end of the first arc surface 112b1, a second plane 112b4 connecting the front end of the second arc surface 112b2 and the upper end of the first arc surface 112b3, and obliquely from the upper end of the second arc surface 112b2 It has the 3rd plane 112b5 extended upwards, and the U-shaped part 112b6 formed between the upper end of the 1st circular arc surface 112b1, and the upper end of the 3rd plane 112b5. The radius of curvature of the first arc surface 112b1 is larger than the radius of curvature of the outer arc of the first arc hole 113b described later, and the radius of curvature of the second arc surface 112b2 is the radius of curvature of the inner arc of the first arc hole 113b described later. Smaller than.

  As shown in FIG. 25C, the right plate 113 is made of a metal such as aluminum or plastic that has the same left side outline as the left plate 111 and can transmit the magnetic force of the permanent magnet. The right plate 113 has screw insertion holes 113a at four corners, a first arc hole 113b penetrating in the left-right direction on the rear side, and a second arc hole 113c continuous with the upper end of the first arc hole 113b. The front side has a third arc hole 113d that is continuous with the front end of the second arc hole 113c, the front side has a downward linear hole 113e that is continuous with the lower end of the third arc hole 113d, and the straight hole 113e. The recovery hole 113f that is continuous with the lower end of the front is provided on the front side. The right plate 113 has an outlet forming recess 113g on the upper surface, a screw insertion hole 113h used for screwing an inlet port forming member 114, which will be described later, on the upper rear side, and the first arc hole from the upper surface. A detection groove 113i for the photosensor 150 reaching 113b is provided on the upper left rear side, and a plurality (four in the figure) of screw insertion holes 113j used for screwing the support shaft 120 are provided in the center.

  The first arc hole 113b is formed in an angle range of about 180 degrees from the bottom to the top. Further, the centers of curvature of the outer arc and the inner arc of the first arc hole 113b coincide with each other, and the difference in the radius of curvature between the outer arc and the inner arc defines a width Wg described later. As shown in FIG. 25D, the first arc hole 113b is slightly larger than the height Hcr of the chip register CR and smaller than the width Wcr, and more than the width Wcr of the chip register CR. The chip resistor CR is oriented in the length direction (the length Lcr is parallel to the traveling direction, and two surfaces defining the width Wcr and two surfaces defining the height Hcr). Can be accommodated movably in the direction perpendicular to the traveling direction.

  The second arc hole 113c is formed in an angle range of about 25 degrees from top to bottom continuously with the upper end of the first arc hole 113b. Further, the curvature radii of the outer arc and the inner arc of the second arc hole 113c coincide with the curvature radii of the outer arc and the inner arc of the first arc hole 113b, respectively, and the outer arc and the inner arc of the second arc hole 113c. The center of curvature coincides with the center of curvature of the outer arc and the inner arc of the first arc hole 113b. Further, the second arc hole 113c has the same width Wg and depth Dg as the first arc hole 113b, and the chip register CR can be movably accommodated in the length direction like the first arc hole 113b. .

  The third arc hole 113d is formed in an angle range of about 15 degrees from top to bottom continuously with the front end of the second arc hole 113c. The curvature radii of the outer arc and the inner arc of the third arc hole 113d are smaller than the curvature radii of the outer arc and the inner arc of the first and second arc holes 113b and 113c, respectively, and are outside the third arc hole 113d. The centers of curvature of the arc and the inner arc coincide with each other. Further, the third arc hole 113d has the same width Wg and depth Dg as the first arc hole 113b, and the chip register CR can be movably accommodated in the length direction like the first arc hole 113b. .

  The straight hole 113e is formed continuously downward with the lower end of the third arc hole 113d. Further, the straight hole 113e has the same width Wg and depth Dg as the first arc hole 113b, and the chip register CR can be movably accommodated in the length direction like the first arc hole 113b.

  The recovery hole 113f is formed continuously downward with the lower end of the straight hole 113e. The recovery hole 113f has the same depth Dg as that of the first arc hole 113b, and the front-rear interval gradually increases from top to bottom. Further, an inclined surface 113f1 is provided at the lower end of the recovery hole 113f. The inclined surface 113f1 is inclined downwardly from the bottom surface of the recovery hole 113f toward the left surface of the right plate 113.

  The outlet forming recess 113g is formed so as to cut out a part of the upper surface of the right plate 113, specifically, the boundary between the first arc hole 113b and the second arc hole 113c in the left-right direction with a predetermined front-rear dimension. And has a predetermined depth reaching the first and second arc holes 113b and 113c. In short, the uppermost point of the first arc hole 113b and its front and rear portions are opened upward through the outlet forming recess 113g.

  The detection groove 113i is formed so as to extend from the upper surface of the right plate 113 to the first arc hole 113b. The detection groove 113i has a depth smaller than the depth Dg of the first arc hole 113b and smaller than the width Wcr of the chip register CR.

  To assemble the case 110 shown in FIG. 24, first, the center plate 112 shown in FIG. 25B is overlaid on the left surface of the right plate 113 shown in FIG. A set screw FS is inserted into the hole 113a, and each set screw FS is screwed into the screw hole 112a of the center plate 112 to couple them together.

  Then, the intake port forming member 114 (see FIG. 28) is fitted into the U-shaped portion 112b6 of the central plate 112, the set screw FS is inserted into the screw insertion hole 113h of the right plate 113, and the set screw FS is formed into the intake port. They are screwed into the screw holes 114c of the member 114 to couple them together. The intake port forming member 114 is made of metal or plastic, has an outer shape that matches the inner shape of the U-shaped portion 112b6 of the center plate 114, and has a narrow width portion 114b that is narrowed by the arc surface 114a. Have. Further, the thickness of the intake port forming member 114 matches the thickness of the central plate 114. Further, the radius of curvature of the arc surface 114a is larger than the radius of curvature of the outer arc of the first arc hole 113b of the right plate 113, and is the same as or slightly larger than the radius of curvature of the first arc surface 112b1 of the center plate 112.

  Then, the left plate 111 shown in FIG. 25A is overlaid on the left surface of the center plate 112, the set screws FS are inserted into the screw insertion holes 111 a of the left plate 111, and the set screws FS are attached to the center plate 112. Both are coupled by screwing into the screw holes 112a. Although not described, the case 110 can be assembled by a method other than the above.

  By this assembly, as shown in FIGS. 27 to 29, the right opening of the through hole 112 b of the center plate 112 is closed by the right plate 113 and the left opening of the through hole 112 b is closed by the left plate 111. Further, the upper part of the left opening of the first arc hole 113 b of the right plate 113 is closed by the through hole non-forming portion of the central plate 112 and the narrow width portion 114 b of the intake port forming member 114. Furthermore, the left opening of the second arc hole 113c of the right plate 113, the left opening of the third arc hole 113d of the right plate 113, the left opening of the straight hole 113e of the right plate 113, and the outlet forming recess of the right plate 113 The left opening of 113 g and the left opening of the detection groove 113 i of the right plate 113 are closed by the through hole non-forming portion of the central plate 112.

  That is, in the case 110, the first arc surface 112b1, the second arc surface 112b2, the first plane 112b3, the second plane 112b4, and the third plane 112b5 of the through hole 112b, and the arc surface 114a of the intake port forming member 114 are provided. And the rear and lower surfaces of the narrow portion 114b, a part of the right side of the left plate 111, and a part of the left side of the right plate 113, a storage chamber 115 having a substantially semicircular left-side outline is defined. The Further, a detection port (hereinafter referred to as a detection port 113i using the same reference numeral as the detection groove 113i) is formed on the upper surface of the case 10 from the upper surface to the upper part of the first arc hole 113b (a supply passage 117 described later). Is done.

  As shown in FIG. 29, the support shaft 120 has a shaft main body 120a and a flange 120b provided at the left end of the shaft main body 120a, and is made of metal or plastic. The support shaft 120 has a plurality of (four in the drawing) screw insertion holes (not shown) provided in the flange portion 120b and a screw insertion hole 113j of the right plate 113 with a set screw (not shown). Each set screw is screwed into the screw hole 112c of the center plate 112 to connect the three members, thereby being attached to the center of the right surface of the right plate 113. The center of the shaft main body 120a of the support shaft 120 after the attachment coincides with the center of curvature of the outer arc and the inner arc of the first arc hole 113b of the right plate 113.

  The bearing 130 is formed of a radial type ball bearing, and as shown in FIG. 29, the inner ring is fitted and attached to the shaft main body 120 a of the support shaft 120.

  As shown in FIGS. 26A to 26C, the rotor 140 includes a cylindrical portion 140a, a flange portion 140b provided at the left end of the cylindrical portion 140a, and the cylindrical portion 140a and the flange portion 140b in the left-right direction. And a central hole 140c penetrating through and formed of a metal such as aluminum or plastic that can transmit the magnetic force of the permanent magnet.

  The flange 140b of the rotor 140 has a cylindrical shape and a total of eight permanent magnets 140d having magnetic poles on the circular surfaces at both ends. Each virtual center is concentric with the rotation center of the rotor 140. They are provided at equiangular intervals (angular interval θ = 45 degrees) so as to be positioned on the VC. Each permanent magnet 140d is attached by being fitted into a hole having a predetermined depth formed on the right surface of the flange 140b, and one magnetic pole surface is exposed in a substantially flush state on the right surface of the flange 140b. The other magnetic pole surface is not exposed from the left surface of the rotor 140. In short, a total of eight permanent magnets 140d are arranged on the rotor 140 in a form in which the single permanent magnets 140d are arranged at equal angular intervals (angular intervals θ = 45 degrees) along the virtual circle VC and are adjacent to each other. Between each permanent magnet 140d, there is a region where the permanent magnet 140d is not provided. The polarities of the magnetic pole surfaces on the left surface side of the rotor 140 of each permanent magnet 140d may all be the same, or may be alternately different along the virtual circle VC. Each permanent magnet 140d has a magnetic force sufficient to attract the chip register CR in the storage chamber 115 in the direction of a guide groove 116 described later, for example, a surface magnetic force of 2000 to 4000 gauss.

  Similarly to FIGS. 6A and 6B, each permanent magnet 140d has magnetic poles on the circular surfaces at the left and right ends, so that the magnetic field lines are most dense, in other words, the magnetic field is the strongest ( Hereinafter, the center of magnetic force MFC) is the center of the magnetic pole surface. When a chip resistor CR having a dimensional relationship of length Lcr> width Wcr> height Hcr is directly attracted to the permanent magnet 140d, the chip resistor CR has a direction in which one side surface in the width direction is in contact with the magnetic pole surface, in other words, the length Tends to be adsorbed in a direction parallel to the magnetic pole surface. In addition, since the magnetic center MFC is at the center of the magnetic pole surface, the longitudinal center of the chip resistor CR attracted to the magnetic pole surface substantially coincides with the magnetic force center MFC. In order to positively obtain such an attracting action, it is preferable to make the diameter Rpm of the magnetic pole face of the permanent magnet 140d smaller than the length Lcr of the chip resistor CR. However, the permanent magnet 140d having a diameter Rpm of the length Lcr or more is preferably used. Even if it is used, specifically, it is possible to obtain the same adsorption action as described above even if a permanent magnet 140d having a diameter Rpm of about 10 times the length Lcr is used.

  As shown in FIG. 29, the rotor 140 is attached by fitting the center hole 140c into the outer ring of the bearing 130. In this attached state, the center of the virtual circle VC where the center of the left magnetic pole face of each permanent magnet 140d is located coincides with the center of curvature of the outer arc and inner arc of the first arc hole 113b of the right plate 113. Further, the left surface of the rotor 140 faces the right surface of the right plate 113 in parallel through a gap CL (see FIG. 30) that is as small as possible that allows the rotor 140 to rotate. Further, as shown in FIGS. 27 to 29, the right opening of the first arc hole 113b of the right plate 113, the right opening of the second arc hole 113c of the right plate 113, and the third arc hole 113d of the right plate 113 The right opening, the right opening of the straight hole 113e of the right plate 113, the right opening of the recovery hole 113f of the right plate 113, and the right opening of the outlet forming recess 113g of the right plate 113 are covered by the left surface of the rotor 140.

  That is, in the case 110, the arc-shaped guide groove 116 is formed by a portion where the left opening of the first arc groove 113b is not blocked (an angle range portion of about 150 degrees). Since the center of curvature of the outer arc and the inner arc of the guide groove 116 coincides with the center of curvature of the first arc surface 112b1 of the through hole 112b, the outer arc of the guide groove 116 and the first arc surface 112b1 of the through hole 112b The interval is constant along the guide groove 16. Further, in the case 110, an arc-shaped supply passage 117 is formed by a portion where the left opening and the right opening of the first arc groove 113b are closed (angle range portion of about 30 degrees), and the supply passage 117 is formed. An intake port 117a serving as the entrance is formed at the rear end. Further, in the case 110, a recovery passageway 118 that curves forward and downward by the second arc hole 113c, the third arc hole 113d, and the straight hole 113e and gradually moves inward from the track of a permanent magnet 140d described later. Is formed continuously with the upper end of the supply passage 117, and a discharge port 118a serving as an outlet thereof is formed at the lower end of the recovery passage 118. Further, a recovery groove (hereinafter referred to as a recovery groove 113f using the same reference numeral as the recovery hole 113f) is formed in the case 110 so as to communicate with the discharge port 118a of the recovery passage 118. Since the left side opening of the collection groove 113 f is not blocked by the through hole non-forming portion of the central plate 112, the left side opening opens into the storage chamber 115. Further, the upper surface of the case 110 is provided on the boundary between the supply passage 117 and the recovery passage 118, and has a top opening opening 119 having front and rear dimensions and right and left dimensions sufficient for taking out the chip register CR to the outside. Is formed.

  The rotor 140 can rotate about the shaft main body 120a of the support shaft 120. As the rotor 140 rotates, each permanent magnet 140d has a guide groove 116, a supply passage 117, and a circular path corresponding to the virtual circle VC. The recovery passage 118 can move along a portion corresponding to the second arc groove 113c.

  The clearance CL existing between the left surface of the rotor 140 and the right surface of the right plate 53 is a chip register from the right opening of the first arc hole 113b, the second arc hole 113c, the third arc hole 113d, the straight hole 113e, and the recovery hole 113f. It is possible to increase the value so that the CR does not fall out, specifically, to a value corresponding to ½ of the width Wcr of the chip register CR. Even if the gap CL is increased in this way, the same supply as described later is possible. Operation can be realized.

  Further, as can be seen from FIG. 30, the positional relationship between each permanent magnet 140d and the guide groove 116 during rotation of the rotor 140 is preferably such that the center of the magnetic pole surface facing the guide groove 116 faces into the guide groove 116. Is set so that the center of the magnetic pole surface coincides with the center of the width Wg of the guide groove 116. Of course, the positional relationship between each permanent magnet 140d and the guide groove 116 is such that if the center of the magnetic pole face facing the guide groove 116 is directed into the guide groove 116, the center of the magnetic pole face is the center of the width Wg of the guide groove 116. It may be set so as to be slightly deviated from the inside to the outside. Even in a part of the supply passage 117 formed by the first arc hole 113b shared with the guide groove 116 and the recovery passage 118 formed by the second arc groove 113c, each permanent magnet 140d during rotation of the rotor 140 is provided. The positional relationship between the supply passage 117 and a part of the recovery passage 118 is the same as described above. This position can be set by changing the radius of curvature of the virtual circle VC in which the center of the magnetic pole surface of each permanent magnet 140d is located, as well as the outer and inner arcs of the first and second arc holes 113b and 113c of the right plate 113. This can be done by changing the radius of curvature of the arc.

  Further, as can be seen from FIG. 28, the positional relationship between each permanent magnet 140 d and the storage chamber 115 when the rotor 140 rotates is such that the magnetic pole surface facing the guide groove 116 is on the guide groove 116 on the right side of the storage chamber 115 and both sides thereof. Preferably, all of the magnetic pole faces are set to face the guide groove 116 on the right face of the storage chamber 115 and both sides thereof so as to face each other. Of course, the positional relationship between each permanent magnet 140d and the storage chamber 115 is such that the magnetic pole surface facing the guide groove 116 faces the guide groove 116 on the right side of the storage chamber 115 and both sides thereof. The part except the outer edge part of the opposing magnetic pole surface may be set so as to face the guide groove 116 on the right surface of the storage chamber 115 and both sides thereof. This position can be set by changing the radius of curvature of the first arc surface 112b1 of the through hole 112b of the central plate 112, and also changing the radius of curvature of the virtual circle VC where the center of the magnetic pole surface of each permanent magnet 140d is located. Or by changing the curvature radius of the outer arc and the inner arc of the first arc hole 113b of the right plate 113.

  The reflective photosensor 150 has a light emitting element such as a light emitting diode (not shown), a light receiving element such as a phototransistor (not shown), and an input / output terminal (not shown) connected thereto. The light emitting element and the light receiving element are arranged such that the light emitting part and the light receiving part are exposed on the lower surface of the sensor body. As in FIG. 16, the photosensor 150 is attached to the upper surface of the case 110 so that the light emitting part and the light receiving part are located above the detection opening 113i, and the light F1 emitted from the light emitting part is detected by the detection opening 113i. The reflected light F2 is guided to the light receiving section through the detection port 113i.

  The rotor drive mechanism (not shown) is for rotating the rotor 140 in a desired direction and stopping the rotation, and includes at least a motor 62 (see FIG. 11) and a drive gear attached to the motor shaft. Have. If a substitute part of a gear is formed on the outer peripheral surface of the rotor 140 or another gear is fixed to the rotor 140 and the drive gear is engaged with the gear, the rotor 140 is rotated in a desired direction by motor operation. The rotation of the rotor 140 can be stopped by stopping the motor operation.

  Since the control system according to the bulk feeder shown in FIG. 24 is the same as that described in the first embodiment with reference to FIG. 11, the description thereof is omitted here.

  Next, the supply operation of the bulk feeder shown in FIG. 24 will be described with reference to FIGS. In this description, FIGS. 11, 12, 16, and 17 used in the description of the first embodiment are appropriately cited.

  When supplying the components, as shown in FIG. 31, a large number of chip registers CR are stored in the storage chamber 115 of the case 110 in a loose state. This storage is performed through a replenishing port (not shown) with an open / close lid provided in the case 110. If the chip register CR is stored too much, the probability of the chip register CR being taken into the take-in port 117a is lowered, so that the maximum storage level of the chip register CR is about ½ of the height of the storage chamber 115. It is preferable. For example, in the case of a chip register CR having a length Lcr of 1.0 mm, a case having the same size as that of FIG. 24 is formed, and the maximum storage level is about ½ of the height dimension of the storage chamber 115. About 10,000 chip registers CR can be stored.

  After the chip register CR is stored in the storage chamber 115, the rotor 140 is rotated in the counterclockwise direction as indicated by the broken line arrow in FIG. At the same time as the rotation of the rotor 140 is started, the operation of the photosensor 150, that is, light emission from the light emitting element and light reception by the light receiving element are started.

  In the process in which the permanent magnet 140d moves upward along the guide groove 116 as the rotor 140 rotates, as shown in FIG. 31, a plurality of chip registers among the chip registers CR stored in the storage chamber 115 are used. The CR is attracted toward the guide groove 116 by the permanent magnet 140d, and the plurality of chip registers CR move upward along the guide groove 116 while being attracted to the permanent magnet 140d.

  As described above, the positional relationship between each permanent magnet 140d and the guide groove 116 during the rotation of the rotor 140 is set so that the center of the magnetic pole face facing the guide groove 116 faces the guide groove 116, and The positional relationship between each permanent magnet 40d and the storage chamber 115 during rotation of the rotor 140 is set so that the magnetic pole surface facing the guide groove 116 faces the guide groove 116 on the right surface of the storage chamber 115 and both sides thereof. Therefore, the plurality of chip resistors CR attracted in the direction of the guide groove 116 by the permanent magnet 140d are attracted with an outline that covers the opposing region of the magnetic pole surface of the permanent magnet 140d facing the guide groove 116, and the plurality of chip resistors CR are attracted. The chip register CR is strongly attracted to the guide groove 116, and several chip registers CR are accommodated in the guide groove 116 by this action. Since the guide groove 116 here is formed by a part of the first arc hole 113 b, the chip register CR housed in the guide groove 116 is in a form that is attracted to the left surface of the rotor 140.

  That is, more chip registers CR can be attracted toward the guide groove 116 by the permanent magnet 140d, and a plurality of attracted chip registers CR can be accommodated in the guide groove 116 with high probability. The probability of taking a chip register CR into a later-described take-in port 117a can be increased. The direction of the chip register CR accommodated in the guide groove 116 is two patterns, that is, the length direction (see FIG. 32) and the direction different from the length direction by 90 degrees (see FIG. 33), and is not accommodated in the guide groove 116. The direction of the chip register CR is random (meaning that the directions are different).

  The plurality of chip registers CR including the chip register CR accommodated in the guide groove 116 move further upward along the guide groove 116 with the upward movement of the permanent magnet 140d and reach the intake port 117a. At this time, when the foremost side of the several chip registers CR accommodated in the guide groove 116 is “the chip register CR accommodated in the length direction in the guide groove 116”, as shown in FIG. The chip register CR flows in the same direction into the intake port 117a. Further, “the chip register CR accommodated in the guide groove 116 in a direction different from the length direction in the guide groove 116” existing behind the “chip register CR accommodated in the length direction in the guide groove 116” and “the guide groove As shown in FIG. 33, the chip register CR which is not accommodated in 116 contacts the rear surface of the narrow portion 114b of the intake port forming member 114 located on the left side of the intake port 117a, and the right side of the intake port 117a. When the permanent magnet 140d passes and the attractive force decreases, it falls downward.

  On the other hand, when the foremost side of several chip registers CR accommodated in the guide groove 116 is “the chip register CR accommodated in the guide groove 116 in a direction different from the length direction by 90 degrees”, the rear side Even if there is a “chip register CR accommodated in the length direction in the guide groove 116”, the inflow of the chip register CR into the intake port 117a is “a direction different from the length direction in the guide groove 116 by 90 degrees”. Is basically blocked by the chip register CR ". Further, “the chip register CR accommodated in the guide groove 116 in a direction different from the length direction by 90 degrees” and “the chip register CR not accommodated in the guide groove 116” are, as shown in FIG. It comes into contact with the rear surface of the narrow portion 114b of the intake port forming member 114 on the left side, and drops downward when the permanent magnet 140d passes through the right side of the intake port 117a and the attractive force is reduced. However, “the chip register CR accommodated in the length direction in the guide groove 116” exists behind the “chip register CR accommodated in the guide groove 116 in a direction different from the length direction by 90 degrees”, and When the “chip register CR accommodated in the guide groove 116 in a direction different from the length direction by 90 degrees” falls, the direction of the “chip register CR accommodated in the length direction in the guide groove 16” changes. When it does not occur, the “chip register CR accommodated in the length direction in the guide groove 16” flows into the intake port 117a.

  In the process in which the permanent magnet 140d moves upward along the supply passage 117 along with the rotation of the rotor 140, the length-oriented chip register CR that has flowed into the supply passage 117 through the intake port 117a is similar to FIG. While being attracted by the permanent magnet 140d, the supply passage 117 moves further upward in the same direction, and passes below the detection port 113i in the middle of the movement.

  As described above, the positional relationship between each permanent magnet 140d and the supply passage 117 during rotation of the rotor 140 is set so that the center of the magnetic pole surface facing the supply passage 117 faces the supply passage 117, and Since the chip register CR is attracted so that the center in the length direction thereof substantially coincides with the center of the magnetic pole surface of the permanent magnet 140d (magnetic center MFC), the chip register CR moving upward in the supply passage 117 is moved from the left side. When viewed, the chip resistor CR moves upward in the supply passage 117 while maintaining a suction state in which the center in the length direction substantially coincides with the center of the magnetic pole surface of the permanent magnet 140d (magnetic center MFC). Become. Further, since the depth of the detection port 113i is smaller than the width Wcr of the chip register CR, the movement of the chip resistor CR in the length direction is obstructed by the lower end opening of the detection port 113i when moving upward in the supply passage 117. It is never done.

  Further, when the chip register CR moving in the supply passage 117 passes below the detection port 113i, the light F1 emitted from the light emitting portion of the photosensor 150 is irradiated to the upper surface of the chip register CR through the detection port 113i, The reflected light F2 is received by the light receiving portion of the photosensor 150 through the detection port 113i.

  Whether or not the chip register CR moving in the supply passage 117 has passed under the detection port 113i can be determined based on the detection signal of the detector 61 for the photosensor 150 (see FIG. 11). Then, based on the detection signal, the direction of the chip register CR, that is, whether the resistance film CRc and the protective film CRd are facing upward or downward is determined (step ST11 in FIG. 12A). And ST12). The discrimination result here is stored in correspondence with the permanent magnet 40d attracting the chip register CR.

  Since the chip register CR includes the resistance film CRc and the protective film CRd covering the resistance film CRc on one of the two surfaces defining the height Hcr, the surface on which the resistance film CRc and the protection film CRd exist and the other surface are external electrode CRa. The color of the area except for is different. As an example, a chip resistor in which the protective film CRd is transparent or translucent and the main body CRb is made of alumina and the resistance film CRc is made of ruthenium oxide is outside the surface where the resistance film CRc and the protection film CRd exist. The color of the region excluding the electrode CRa is blackish, and the color of the region excluding the external electrode CRa on the other surface is whitish.

  Therefore, when the reflectance of the external electrode CRa is the same as that of the resistance film CRc and the protection film CRd, the change in the amount of light received by the photosensor 50 when the resistance film CRc and the protection film CRd are facing upward is shown in FIG. FIG. 17B shows the change in the amount of light received by the photosensor 50 when the resistance film CRc and the protective film CRd face downward as shown in FIG. Depending on the reflectivity of the external electrode CRa, the reflectivity of the resistance film CRc and the protective film CRd, and the reflectivity of the main body CRb, a change in the amount of received light different from that in FIGS. 17A and 17B may occur. Whether the directionality is appropriate (the state in which the resistance film CRc and the protective film CRd are facing up) or the directionality is incorrect (in the state in which the resistance film CRc and the protective film CRd are facing downward) is the resistance film CRc and This can be sufficiently determined by the change in the amount of received light caused by the presence or absence of the protective film CRd.

  When it is determined that the chip resistor CR that has passed through the lower side of the detection port 113i has proper squareness (a state in which the resistance film CRc and the protective film CRd are facing upward), as shown in FIGS. In order to supply the chip resistor CR from the supply passage 117 to the outlet 119, the permanent magnet 140d attracting the chip resistor CR is taken to the right side of the outlet 119, preferably the center of the magnetic pole surface of the permanent magnet 140d is the outlet. The rotation of the rotor 140 is stopped so as to stop at a position coinciding with the center in the front-rear direction of 119 (see steps ST21 and ST22 in FIG. 12B).

  As described above, the positional relationship between each permanent magnet 140d and the supply passage 117 and a part of the recovery passage 118 during rotation of the rotor 140 is such that the center of the magnetic pole surface facing the supply passage 117 and a part of the recovery passage 118 is located. It is set so as to face the supply passage 117 and a part of the recovery passage 118, and the outlet 119 is provided on the boundary between the supply passage 117 and the recovery passage 118. When the attracting permanent magnet 140d is stopped at the right position of the outlet 119, the chip resistor CR stops at the lower side of the outlet 119.

  If the tip register CR is displaced forward under the outlet 119 due to inertia when the rotation of the rotor 140 is stopped, the rotation speed is gradually or stepwise reduced before the rotation of the rotor 140 is stopped. Processing may be performed. By performing such processing, it is possible to prevent the position of the chip register CR supplied to the outlet 119 from being shifted.

  The chip register CR is taken out from the bulk feeder in the state shown in FIGS. 34 and 35, that is, in a state where the rotation of the rotor 140 is stopped. Specifically, after the suction nozzle (not shown) of the mounter (electronic component mounting apparatus) is lowered toward the outlet 119 and the chip register CR stationary on the lower side through the outlet 119 is sucked, This is done by raising the suction nozzle.

  After the chip register CR supplied to the outlet 119 is taken out, the rotation of the rotor 140 is resumed. The removal of the chip register CR from the outlet 119 can be detected by sensing whether or not the chip register CR is sucked by the suction nozzle, whether or not the chip register CR remains in the outlet 119, and the rotor 140 based on the sensing result. The rotation can be easily resumed.

  On the other hand, when it is determined that the chip resistor CR that has passed through the lower side of the detection port 113i has an inappropriate directionality (a state in which the resistance film CRc and the protective film CRd face downward), as shown in FIG. In order to send the chip register CR from the supply passage 117 to the recovery passage 118, the rotation of the rotor 140 is continued so that the permanent magnet 140d attracting the chip register CR passes through the right side position of the outlet 119 (FIG. 12). (See steps ST21 and ST23 of (B)).

  In the process in which the permanent magnet 140d moves downward along the portion corresponding to the second arc groove 113c of the recovery passage 118 as the rotor 140 rotates, as shown in FIG. Is fed into the collection passage 118 and moves downward in the same direction in the portion corresponding to the second arc groove 113c of the collection passage 118 while the chip register CR is attracted to the permanent magnet 140d.

  In the process in which the permanent magnet 140d further moves downward as the rotor 140 rotates, the permanent magnet 140d is moved from the portion corresponding to the third arc groove 113d and the portion corresponding to the linear groove 113e of the recovery passage 118 as shown in FIG. The suction force with respect to the chip register CR gradually decreases and the chip register CR moves downward in the portion corresponding to the third arc groove 113d and the portion corresponding to the straight groove 113e of the recovery passage 118 by its own weight as the suction force decreases. Then, it falls into the recovery groove 113f from the discharge port 118a at the lower end of the recovery passageway 118. Since the front-rear interval of the recovery groove 113f is wider than the length Lcr of the chip register CR, the chip register CR that has fallen into the recovery groove 113f from the discharge port 118a has a random posture in the recovery groove 113f. Then, it is returned into the storage chamber 115 directly from the recovery groove 113f or while being guided by the inclination of the inclined surface 113f1.

  Since a total of eight permanent magnets 140d are provided at equiangular intervals (angular interval θ = 45 degrees) on the rotor 140 of the bulk feeder described above, a chip resistor must be attached to the permanent magnet 140d moving along the supply passage 117. If the CR is sucked in the length direction, the probability register indicates that the chip register CR having the proper direction can be supplied to the outlet 119 every time the rotor 140 rotates 90 degrees.

  Thus, according to the above-described bulk feeder, the chip register CR is in the proper direction (the resistance film CRc and the protective film CRd face upward while the chip register CR moves in the length direction in the supply passage 117. Or the inappropriate direction (the state where the resistance film CRc and the protective film CRd are facing downward), and if the direction is determined to be appropriate, the chip register CR is sucked. The rotation of the rotor 40 is stopped so that the permanent magnet 140d is stopped at the right position of the outlet 119, and the chip register CR is supplied to the outlet 119. The rotation of the rotor 140 is continued so that the permanent magnet 140d attracting the resistor CR passes through the right side position of the outlet 119, and the chip resistor CR is supplied to the supply passage. By feeding from 17 to collection path 118 can be returned to storage chamber 115.

  In short, only the chip register CR having the proper direction can be supplied from the supply passage 117 to the outlet 119, and the chip register CR having the wrong direction can be sent from the supply passage 117 to the collection passage 118 and returned to the storage chamber 115. Therefore, it is possible to eliminate the problem caused by the directivity conversion means and to supply the chip register CR having the proper direction to the take-out port 119 at a high speed while avoiding damage to the chip register CR. In addition, since the chip register CR having an inappropriate direction can be returned to the storage chamber 115 and reused, the chip register CR stored in the storage chamber 115 can be supplied to the outlet 119 without leaving any excess.

  Further, according to the above-described bulk feeder, the supply passage 118 is provided with the discharge port 118a side (the portion corresponding to the third arc groove 113d and the portion corresponding to the linear groove 113e) separated from the track of the permanent magnet 140d. Since the chip register CR having an improper direction sent from the passage 117 to the recovery passage 118 can be moved downward by its own weight, the chip register CR having an improper direction sent from the supply passage 117 to the recovery passage 118 is provided. Can be prevented from stopping in the collection passage 118 due to the attractive force of the permanent magnet 140d, and can be smoothly returned to the storage chamber 115.

  Furthermore, according to the above-described bulk feeder, the positional relationship between each permanent magnet 140d and the supply passage 117 and a part of the recovery passage 118 during rotation of the rotor 140 is a magnetic pole surface facing the supply passage 117 and a part of the recovery passage 118. Is set so that the center thereof is directed into the supply passage 117 and a part of the recovery passage 118, and the outlet 119 is provided on the boundary between the supply passage 117 and the recovery passage 118. When the permanent magnet 140d attracting the resistor CR is stopped at the right position of the outlet 119, the chip resistor CR is stopped at the lower side of the outlet 119, and the tip from the outlet 119 by the adsorption nozzle of the mounter is used. The register CR can be taken out satisfactorily.

  In the above description, the rotor 140 having a total of eight permanent magnets 140d at equal angular intervals is shown. However, instead of the rotor 140, the rotor 140-1 shown in FIGS. ~ 140-3 can be used to achieve the same supply operation as described above.

  In the rotor 140-1 shown in FIG. 38A, a total of 16 permanent magnets 140d are arranged along the virtual circle VC at equiangular intervals (angular interval θ = 22.5 degrees). The permanent magnets 140d are arranged, and there are regions where the permanent magnets 140d are not provided between the adjacent permanent magnets 140d. The polarities of the magnetic pole surfaces on the left surface side of the rotor 140-1 of each permanent magnet 140d may all be the same, or may be alternately different along the virtual circle VC.

  In the rotor 140-2 shown in FIG. 38 (B), a permanent magnet group PMG formed by arranging five permanent magnets 140d in an arc shape is equiangularly spaced along the virtual circle VC (angular spacing θ = A total of 40 permanent magnets 140d are arranged in a form of being arranged at 45 degrees, and there are regions where the permanent magnets 140d are not provided between the adjacent permanent magnet groups PMG. The five permanent magnets 140d constituting each permanent magnet group PMG are arranged such that adjacent permanent magnets 140d are in a contact state or a non-contact state. Further, the polarities of the magnetic pole surfaces on the left surface side of the rotor 140-2 of each permanent magnet 140d may all be the same, or may be alternately different along the virtual circle VC.

  In the rotor 140-3 shown in FIG. 22C, a permanent magnet group PMG formed by arranging 17 permanent magnets 140d in an arc shape is equiangularly spaced along the virtual circle VC (angle spacing θ = A total of 68 permanent magnets 140d are arranged in the form of being arranged at 90 degrees, and there are regions where the permanent magnets 140d are not provided between the adjacent permanent magnet groups PMG. The angle range θ1 of each permanent magnet group PMG is about 22.5 degrees, and the 17 permanent magnets 140d constituting each permanent magnet group PMG are arranged such that adjacent permanent magnets 140d are in a contact state or a non-contact state. Yes. Further, the polarities of the magnetic pole surfaces on the left surface side of the rotor 140-3 of each permanent magnet 140d may all be the same, or may be alternately different along the virtual circle VC.

  The rotors 140 and 140-1 and the rotors 140-2 and 140-3 are different in the arrangement of the permanent magnets 140d, but the speed at which the chip register CR having the proper direction is supplied to the outlet 119 is basically the same. It depends on at least one of the rotor rotational speed and the number of permanent magnets. In other words, in any arrangement, if the number of permanent magnets is selected in accordance with the rotor rotation speed or the rotor rotation speed is selected in accordance with the number of permanent magnets, a chip having a proper direction at a desired speed is obtained. A register CR can be supplied to the outlet 119.

  In the above description, the permanent magnet 140d has a cylindrical shape, but other shape permanent magnets, for example, a quadrangular prism shape and a magnetic pole with a rectangular surface at both ends, etc. Even if the permanent magnet 140d is used instead of the permanent magnet 140d, the same supply operation as described above can be realized.

  Further, in the above description, the chip register CR belonging to the shape of the component EC1 shown in FIG. 1A is shown as the supply target. However, the length, width, height, and the like that define the component dimensions are directed. As long as it is a component that can be attracted by magnetic force, other components belonging to the shape of the component EC1 can be supplied, as shown in FIGS. 1B and 1C. Parts that belong to the shapes of the shown parts EC2 and EC3 can be supplied.

  39A and 39B show the first arc grooves 113b-1 and 113b-2 in the case where a part belonging to the shape of the part EC2 shown in FIG. The first arc groove 113b-1 shown in FIG. 39A has a width Wg and a depth Dg that are slightly larger than the width W2 or height H2 of the component EC2 and smaller than the end face diagonal dimension D2. As shown by the broken line in the figure, the component EC2 is oriented in the length direction (the length L2 is parallel to the traveling direction, the two surfaces defining the width W2 and the two surfaces defining the height H2 are the depth Dg. Can be accommodated movably on two surfaces (the opening side is a virtual surface) and a direction parallel to the two surfaces defining the width Wg. Although not shown, the cross-sectional shapes of the second arc groove, the third arc groove, and the straight groove when the first arc groove 113b-1 is used are the same as those of the first arc groove 113b-1.

  On the other hand, the first arc groove 113b-2 shown in FIG. 39B has a width Wg and a depth Dg that are slightly larger than the end face diagonal dimension D2 of the component EC2 and smaller than the length L2. As shown by a broken line in the drawing, the component EC2 is oriented in the length direction (the length L2 is parallel to the traveling direction, the two surfaces defining the width W2 and the two surfaces defining the height H2 have a depth Dg. It can be accommodated movably on two defined surfaces (the opening side is a virtual surface) and two surfaces defining the width Wg. Although not shown, the cross-sectional shapes of the second arc groove, the third arc groove, and the straight groove when the first arc groove 113b-2 is used are the same as those of the first arc groove 113b-2. When the first arc groove 113b-2 is used, two surfaces defining the width W2 and two surfaces defining the height H2 of the component EC2 are two surfaces (the opening side is a virtual surface). And can be accommodated in the guide groove 116 in a direction non-parallel to the two surfaces defining the width Wg. However, the component EC2 itself takes an attitude in the process of moving in the guide groove 116 or in the process of moving in the supply passage 117. Since the displacement to be stabilized occurs, the component EC2 defines two surfaces defining the width W2 and two surfaces defining the height H2 defining two surfaces (the imaginary surface on the opening side) and the width Wg. It passes under the detection port 113i in a direction parallel to the two surfaces.

  FIG. 39C shows the first arc groove 113b-3 in the case where a part belonging to the shape of the part EC3 shown in FIG. The first arc groove 113b-3 has a width Wg and a depth Dg that are slightly larger than the diameter R3 of the component EC and smaller than the length L3. As shown by a broken line in FIG. The component EC3 can be accommodated so as to be movable in the length direction (the length L3 is parallel to the traveling direction). Although not shown, the cross-sectional shapes of the second arc groove, the third arc groove, and the straight groove when the first arc groove 113b-3 is used are the same as those of the first arc groove 113b-3.

  Further, in the above description, the guide groove 116 is formed in an angle range of about 150 degrees. However, even if the angle range of the guide groove 116 is slightly increased and decreased without changing the upper end position, the same supply operation as described above is performed. Can be realized. Further, although the supply passage 117 is formed in an angle range of about 30 degrees, the same supply operation as described above can be realized even if the angle range of the supply passage 117 is slightly increased or decreased without changing the position of the outlet 119. it can. Further, although the recovery passage 118 having a shape that curves forward and downward is shown, the recovery passage 118 is provided as long as the chip register CR having an inappropriate direction sent from the supply passage 117 can be returned to the storage chamber 115. Even if the left side view shape is appropriately changed, the same supply operation as described above can be realized. Further, a recovery groove 113f communicating with the discharge port 118a is formed below the discharge port 118a of the recovery passage 118, but the left side opening is open into the storage chamber 15 in the storage chamber 115. Then, even if the left view shape of the recovery groove 113f is appropriately changed, the same supply operation as described above can be realized, and a configuration excluding the recovery groove 113f, for example, the lower end of the linear groove 113e constituting the recovery passage 118 is provided. The same supply operation as described above can be realized by adopting a configuration that extends into the storage chamber 115 and returns the chip register CR from the extended portion into the storage chamber 15.

  EC1 to EC3 ... Parts, CR ... Chip register, 10 ... Case, 15 ... Storage chamber, 16 ... Guide groove, 17 ... Supply passage, 17a ... Intake port, 18 ... Recovery passage, 18a ... Discharge port, 19 ... Outlet 40, 40-1, 40-2, 40-3 ... rotor, 40d ... permanent magnet, 50 ... reflection type photosensor, 61 ... detector for photosensor, 62 ... motor, 63 ... driver for motor, 64 ... controller, DESCRIPTION OF SYMBOLS 110 ... Case, 115 ... Storage chamber, 116 ... Guide groove, 117 ... Supply passage, 117a ... Intake port, 118 ... Collection passage, 18a ... Discharge port, 19 ... Outlet, 140, 140-1, 140-2, 140-3 ... rotor, 140d ... permanent magnet, 150 ... reflection type photosensor.

Claims (6)

A bulk feeder that supplies loosely aligned parts in a predetermined direction,
A storage chamber for storing a large number of parts that have directionality in the length, width, height, etc. that define the part dimensions and can be attracted by magnetic force in a loose state;
A rotor having a plurality of permanent magnets movable in a predetermined circular orbit, and rotatably disposed on the outer side of one side of the storage chamber so that the magnetic force of the permanent magnets reaches parts in the storage chamber;
A rotor driving mechanism for rotating the rotor in a predetermined direction and stopping the rotation;
A supply passage for moving in the same direction a component in a predetermined direction that has been attracted to the permanent magnet and flowed through the intake when the rotor rotates in a predetermined direction;
A part that is provided continuously with the upper end of the supply passage and is attracted to the permanent magnet when the rotor rotates in a predetermined direction and is moved in a predetermined direction and returned to the storage chamber through the discharge port. A recovery passageway,
An outlet opening on the upper surface provided on the boundary between the supply passage and the discharge passage and for taking out the electronic component in a predetermined direction supplied from the supply passage while being attracted by the permanent magnet when the rotor rotates in a predetermined direction. When,
Directionality detecting means for detecting the directionality of the part while the part is moving in a predetermined direction in the supply passage;
Directionality determining means for determining whether or not the directionality of a component in a predetermined direction is appropriate based on the detection signal of the directionality detection means;
When the directionality determining means determines that the directionality of the component is appropriate, the rotation of the rotor is stopped so that the permanent magnet attracting the component stops at the side position of the take-out port. Supply control means for supplying from the supply passage to the outlet;
When it is determined by the direction determining means that the directionality of the component is inappropriate, the rotation of the rotor is continued so that the permanent magnet attracting the component passes through the side position of the outlet. Recovery control means for sending the parts from the supply passage to the recovery passage; The bulk feeder according to claim 1,
The recovery passage has a form in which the discharge port side is separated from the track of the permanent magnet so that a component in a predetermined direction fed into the recovery passage moves downward due to its own weight. The bulk feeder according to claim 1 or 2,
The plurality of permanent magnets are arranged on the rotor in a form in which single permanent magnets are arranged at equiangular intervals along a virtual circle, and there is an area where no permanent magnet is provided between adjacent permanent magnets. Exists. The bulk feeder according to claim 1 or 2,
The plurality of permanent magnets are arranged on the rotor in such a manner that a group of permanent magnets arranged in an arc shape is arranged at equal angular intervals along a virtual circle, and a permanent magnet is provided between each adjacent permanent magnet group. There are no areas. In the bulk feeder of any one of Claims 1-4,
Each permanent magnet is arranged on the rotor so that the center of the magnetic pole face facing the supply passage faces the supply passage. In the bulk feeder of any one of Claims 1-5,
One side of the storage chamber is provided so that its upper end is continuous with the intake port, and the components in the storage chamber attracted by the permanent magnet when the rotor rotates in a predetermined direction are stored in the same direction. Further, a guide groove is provided for moving in the above.

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