JP2010161342A - Bulk feeder - Google Patents

Abstract

A bulk feeder capable of exhibiting the ability to supply parts to a take-out port at short time intervals is provided.
A bulk feeder includes a storage chamber 14, a rotor 40, a plurality of permanent magnets 40d provided in the rotor 40, and a circle for accommodating a component EC1 in a length direction and moving the component EC1 upward in the same direction. An arcuate guide groove 13b, an arcuate supply passage 15 for taking in the lengthwise component EC1 moving in the guide groove 13b through the intake port 15a and moving it upward in the same direction, and the supply passage 15 A take-out port 16 having an upper surface opening for taking out the component EC1 in the length direction that has been moved and supplied to the tip is provided. In addition, the center of one magnetic pole of each permanent magnet 40d is located on a predetermined circular orbit, and the center of one magnetic pole of each permanent magnet 40 moving under the predetermined circular orbit faces the guide groove 13b and the supply passage 15. In addition, two flat surfaces FP1 and FP2 are present on the outer side and the inner side of the guide groove 13b facing one magnetic pole of each permanent magnet 40d so as to sandwich the guide groove 13b.
[Selection] Figure 12

Description

  The present invention relates to a bulk feeder that supplies parts stored in a loose state (a state in which directions are not aligned) in a storage chamber to a take-out port in a predetermined direction.

  Patent Documents 1 and 2 include a storage chamber having a rear wall surface and an arcuate guide surface on the outer periphery, an intake port (hereinafter referred to as an intake port) provided at the upper end of the guide surface, and an intake port. A passage provided toward the downstream, a component separation part provided at the tip of the passage, a rotating plate provided behind the wall surface of the storage chamber, and a plurality of magnets provided in the rotating plate. A bulk feeder is disclosed.

  Further, Patent Documents 1 and 2 disclose that the components in the storage chamber are rotated by a magnetic force of a magnet by rotating the rotating plate in a predetermined direction with the components stored in the storage chamber in a loose state (a state in which the directions are not aligned). Simultaneously sucking both the wall surface and the arcuate guide surface and aligning them along both surfaces, allowing only the aligned parts to flow into the intake port, and moving the components flowing into the intake port to the component separation section through the passage A function of supplying the part to a portion corresponding to the outlet formed in the part separation part is also disclosed.

  By the way, in the bulk feeder, in order to simultaneously attract components in the storage chamber to both the wall surface and the arcuate guide surface, a magnet having a corresponding magnetic force is required. Therefore, when the rotating plate is rotated in a predetermined direction, a plurality of parts are simultaneously attracted to both the wall surface and the arcuate guide surface by the magnetic force of the magnet, and the mass of the attracted parts moves along both sides. Behaves like reaching the intake.

  That is, in the bulk feeder, in order to allow components to flow into the intake port, the direction of the foremost component of the plurality of component clusters needs to be in a direction that allows flow into the intake port. However, since the parts are stored in the storage chamber in a loose state and the orientation of the plurality of parts that are simultaneously attracted to both the wall surface and the arcuate guide surface by the magnetic force of the magnet is also in a loose state, There is a low probability that the foremost part is in a direction capable of flowing into the intake port. In addition, although the sucked mass of parts moves along both sides, the direction of the parts is controlled by the two surfaces of the wall surface and the arcuate guide surface. There is also a low probability that the direction of the foremost part is changed to a direction that can flow into the intake port. In short, since the number of parts flowing into the intake port is smaller than the amount of rotation of the rotating plate, the efficiency with which the component flows into the intake port, that is, the efficiency with which the component is supplied to the take-out port is low.

  This type of bulk feeder is frequently used as a component supply means for a mounter (component mounting device), and is suitable for the mounter because there is a high-speed mounter with a short mounting time per component. Capacities, that is, the ability to supply parts to the outlet in a short time interval, for example, 50 msec or less, are required for bulk feeders. However, since the bulk feeder is low in the efficiency of supplying parts to the outlet as described above, it exhibits the ability to fit a high-speed mounter, that is, the ability to supply parts to the outlet at short time intervals. Difficult to do.

Japanese Patent No. 3482324 Japanese Patent No. 3796971

  The objective of this invention is providing the bulk feeder which can exhibit the capability which can supply components to a taking-out port in a short time interval.

  In order to achieve the above object, a bulk feeder according to the present invention includes a storage chamber for storing a large number of parts that can be attracted by magnetic force in a loose state, and a rotor that is rotatably disposed outside the side wall of the storage chamber. And a plurality of permanent magnets provided on the rotor at intervals so that the one magnetic pole faces the storage chamber and the one magnetic pole is along a predetermined circular orbit concentric with the rotation center of the rotor, and along the predetermined circular orbit An arcuate guide groove that is provided on the inner surface of the side wall of the storage chamber from the bottom to the top and that accommodates the components in the storage chamber in a predetermined direction and moves them upward in the same direction, and a predetermined circle An arc shape that is provided from the upper end of the guide groove along the track toward the upper side of the storage chamber, and that takes in a part in a predetermined direction that moves in the guide groove through the inlet and moves it upward in the same direction. Supply passage and tip of supply passage And a take-out opening on the upper surface for moving the inside of the supply passage and taking out a component of a predetermined direction supplied to the tip thereof to the outside, and the center of one magnetic pole of each permanent magnet is a predetermined circle The center of one magnetic pole of each permanent magnet that is located on the track and moves under the predetermined circular track is directed to the inside of the guide groove and the supply passage, and the one magnetic pole of each permanent magnet faces the guide. Two flat surfaces are present on the outer side and the inner side of the groove so as to sandwich the guide groove.

  In this bulk feeder, two flat surfaces are formed so that the center of one magnetic pole of the permanent magnet facing the guide groove faces the inside of the guide groove, and the guide groove is sandwiched between the outside and inside of the guide groove. And exist in a flush state. Therefore, when a plurality of parts in the loose state stored in the storage chamber are attracted in the direction of the guide groove by the magnetic force of the permanent magnet, the two flat surfaces existing outside and inside the guide groove are used. As many parts as possible can be sucked in the guide groove direction. Of the plurality of parts attracted in the direction of the guide groove, the force closest to the one magnetic pole of the permanent magnet and facing the center (magnetic force center) is most strongly attracted to the guide groove. . In addition, when the plurality of parts move upward along the guide groove, the part close to the guide groove of the plurality of parts contacts the two arcuate edges on the opening side of the guide groove. The effect of correcting the direction occurs.

  That is, in combination with the fact that as many parts as possible are attracted in the guide groove direction by the magnetic force of the permanent magnet, one or more of the parts attracted in the guide groove direction by the magnetic force of the permanent magnet The parts can be accommodated in a predetermined direction in the guide groove with high probability based on the above action. In addition, the parts accommodated in the guide groove in a predetermined direction move upward along the guide groove while being attracted by the magnetic force of the permanent magnet and flow into the intake port, and further, from the guide groove to the intake port. The inwardly directed parts move upward along the supply passage while being attracted by the magnetic force of the permanent magnet and reach the outlet.

  In short, since the parts attracted in the guide groove direction by the magnetic force of the permanent magnet can be stored in the guide groove in a predetermined direction with a high probability, the number of parts flowing into the intake port in the predetermined direction compared to the rotation amount of the rotor This can increase the efficiency with which the parts flow into the intake port in a predetermined direction, that is, the efficiency with which the parts are supplied to the take-out port in the predetermined direction. Therefore, even if the time interval at which the parts are taken out from the take-out port becomes short, for example, 50 msec or less, it is possible to exhibit the supply capability sufficiently corresponding to the time interval.

  ADVANTAGE OF THE INVENTION According to this invention, the bulk feeder which can exhibit the capability which can supply components to a taking-out port in a short time interval can be provided.

  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.

1A is a perspective view of parts to be supplied to the bulk feeder shown in FIGS. 2A to 2C, and FIGS. 2B and 2C are FIGS. FIG. 3 is a perspective view of components that can be supplied by the bulk feeder shown in FIG. 2A is a left side view of the bulk feeder, FIG. 2B is a right side view thereof, and FIG. 2C is a top view thereof. 3A is a left side view of the left plate constituting the case shown in FIGS. 2A to 2C, FIG. 3B is a left side view of the center plate, and FIG. 3C is the right side. It is a left view of a board. 4A is a partially enlarged sectional view of the left plate showing the arc groove of the left plate shown in FIG. 3C, and FIGS. 4B to 4D are arcs shown in FIG. 4A. It is a partial expanded sectional view of the left board which shows the modification of a slot. FIG. 5 is a partially enlarged top view of the right plate shown in FIG. 6A is a partially enlarged cross-sectional view of the left plate showing the positional relationship between the circular arc groove and the intake port forming member shown in FIG. 4A, and FIGS. 6B to 6D are FIGS. It is the elements on larger scale of the left board which show the positional relationship of the circular arc groove shown to (B)-FIG. 4 (D), and the intake port formation member. 7A is a left side view of the rotor shown in FIGS. 2A to 2C, FIG. 7B is a top view thereof, and FIG. 7C is S3-S3 in FIG. 7A. It is sectional drawing which follows a line. 8 (A) to 8 (C) are partial enlarged sectional views of the bulk feeder shown in FIGS. 2 (A) to 2 (C), showing the positional relationship between the guide groove of the case and the permanent magnet of the rotor. is there. FIG. 9 is a partially enlarged top view of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 10 is a cross-sectional view taken along line S1-S1 of FIG. FIG. 11 is a sectional view taken along line S2-S2 of FIG. FIG. 12 is a diagram for explaining the operation of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 13 is an operation explanatory diagram of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 14 is an operation explanatory diagram of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 15 is an operation explanatory view of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 16 is an operation explanatory diagram of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 17 is an operation explanatory diagram of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 18 is a diagram for explaining the operation of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 19 is a cross-sectional view corresponding to FIG. 11 showing a modification of the case shown in FIGS. 2 (A) to 2 (C). 20A is a right side view of the left plate constituting the case shown in FIG. 19, and FIG. 20B is a left side view of the right plate. 21A is a left side view of a right plate showing a modification of the case shown in FIGS. 2A to 2C, and FIG. 21B is a right showing a modification of the case shown in FIG. It is a left view of a board. 21A is a cross-sectional view corresponding to FIG. 11 showing a modification of the case shown in FIGS. 2A to 2C, and FIG. 21B shows a modification of the case shown in FIG. It is sectional drawing corresponding to FIG. 23 (A) and 23 (B) are left side views of the rotor showing a modification of the rotor shown in FIGS. 2 (A) to 2 (C). FIG. 24 is a left side view of the rotor showing a modification of the rotor shown in FIGS. 2 (A) to 2 (C).

  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. In the following description, the left, right, front, back, and other directions (excluding FIGS. 1A to 1C) in FIG. , Called left and right.

[Parts to be supplied by bulk feeder]
First, with reference to FIG. 1 (A), parts to be supplied to the bulk feeder shown in FIGS. 2 (A) to 2 (C) will be described.

  As shown in FIG. 1A, the component EC1 has a rectangular parallelepiped shape having a dimensional relationship of length L1> width W1 = height H1. A specific example of the component EC1 is an electronic component such as a small chip capacitor or chip register having a length L1 of 1.6 mm, 1.0 mm, 0.6 mm, 0.4 mm, or the like. Each electronic component has an external electrode EC1a containing a material belonging to a ferromagnetic material and, depending on the type, has an internal conductor containing a material belonging to a ferromagnetic material. Is possible. Of course, components other than electronic components can be supplied as long as they have the same shape and can be attracted by the magnetic force of the permanent magnet 40d described later.

  The parts EC2 and EC3 shown in FIGS. 1 (B) and 1 (C) have the bulk feeder shown in FIGS. 2 (A) to 2 (C) by changing the cross-sectional shape of the arc groove 13b described later. Parts that can be supplied. The component EC2 shown in FIG. 1B has a rectangular parallelepiped shape having a dimensional relationship of length L2> width W2> height H2, and the component EC3 shown in FIG. 1C has length L3> diameter R3. A cylindrical shape having a dimensional relationship is formed. Specific examples of these components EC2 and EC3 are electronic components such as small chip capacitors and chip registers having lengths L2 and L3 of 1.6 mm, 1.0 mm, 0.6 mm, 0.4 mm, and the like. Each electronic component has external electrodes EC2a and EC3a containing a material belonging to a ferromagnetic material, and depending on the type, has an internal conductor containing a material belonging to a ferromagnetic material. Suction is possible. Of course, components other than electronic components can be supplied as long as they have the same shape and can be attracted by the magnetic force of the permanent magnet 40d described later.

  1A to 1C show rectangular parallelepiped and columnar parts EC1 to EC3 as parts. However, if the parts can be attracted by the magnetic force of the permanent magnet 40d described later, A part having a shape similar to the shape shown in FIG.

[One Embodiment of Bulk Feeder]
Next, with reference to FIGS. 2A to 11, the structure of the bulk feeder to which the component EC <b> 1 shown in FIG. 1A is supplied is shown in FIGS. 1B and 1C. A description will be given of a modified example in which the parts EC2 and EC3 are supplied. Incidentally, the + mark shown in FIGS. 2A to 11 indicates the rotation center of the rotor 40 described later or a position corresponding thereto.

  As shown in FIGS. 2A to 2C, the bulk feeder includes a case 10, a support shaft 20, a bearing 30, a rotor 40, and a rotor drive mechanism (not shown). .

  As shown in FIGS. 2A to 2C, the case 10 has a substantially rectangular parallelepiped shape in which the left-right dimension is smaller than the vertical dimension and the front-rear dimension. The case 10 is configured by combining the left plate 11 shown in FIG. 3 (A), the center plate 12 shown in FIG. 3 (B), and the right plate 13 shown in FIG. 3 (C). ing.

  As shown in FIG. 3A, 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. 3 (B), the center plate 12 has the same left side 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 a substantially central position.

  The through-hole 12b has a center of curvature at the + mark in the drawing, a first arc surface 12b1 having a predetermined radius of curvature, a smaller radius of curvature than the first arc surface 12b1, and the first arc surface 12b1. , The second arc surface 12b2 having the same center of curvature, the plane 12b3 connecting the lower end of the first arc surface 12b1 and the lower end of the second arc surface 12b2, the upper end of the first arc surface 12b1 and the upper end of the second arc surface 12b2 And an inverted U-shaped recess 12b4 formed therebetween. The radius of curvature of the first arc surface 12b1 is larger than the radius of curvature of the outer arc surface 13b1 of the arc groove 13b described later, and the radius of curvature of the second arc surface 12b2 is larger than the radius of curvature of the inner arc surface 13b2 of the arc groove 13b described later. Small (see FIG. 10).

  As shown in FIG. 3C, the right plate 13 has the same left-side outline as the left plate 11 and the same thickness as the left plate 11, and can transmit the magnetic force of the permanent magnet 40d described later. It is made of a metal such as aluminum or plastic. This right plate 13 has screw insertion holes 13a at four corners, an arc groove 13b at the rear side of the left surface, a recess 13c for the outlet at the center of the upper surface, and a plurality of screws for screwing the support shaft 20 Screw hole 13f at the center of the right surface.

  The arc groove 13b has a curvature center smaller than that of the outer arc surface 13b1 (see FIG. 4A) having the center of curvature at the + mark in the drawing and having a predetermined radius of curvature, and the outer arc surface 13b1. The outer arc surface 13b1 and the inner arc surface (see FIG. 4A) whose center of curvature coincides with each other, and the difference in the radius of curvature between the outer arc surface 13b1 and the inner arc surface 13b2 is a width Wg (see FIG. 4). (See (A)). This arc groove 13b is formed in an angle range of about 180 degrees from the bottom to the top, specifically from directly below the + mark in the figure to the top, and the front side from the uppermost point of the arc groove 13b. This part is a straight groove (no symbol) extending forward with the same width Wg.

  4A, the cross-sectional shape of the arc groove 13b is slightly larger than the width W1 or the height H1, and the width Wg smaller than the end face diagonal dimension D1 and the length L1. A rectangle having a depth Dg. That is, the arc groove 13b shown in FIG. 4A has a length direction in which the parts EC1 shown in FIG. 1A are substantially equal in width or height, as indicated by a broken line in FIG. It can be accommodated movably.

  The cross-sectional shape of the arc groove 13b shown in FIGS. 4B to 4D is a modification of the cross-sectional shape of the arc groove 13b shown in FIG. The cross-sectional shape of the arc groove 13b shown in FIG. 4B is slightly larger than the end face diagonal dimension D1 of the component EC1 shown in FIG. 1A, and has a width Wg and a depth smaller than the length L1. A rectangle having a length Dg. That is, the arc groove 13b shown in FIG. 4B has a length equal to that of the component EC1 shown in FIG. 1A regardless of the direction of the width and height as shown by the broken line in FIG. It can be accommodated in a movable manner. Further, the cross-sectional shape of the arc groove 13b shown in FIG. 4C is slightly larger than the height H2 of the component EC2 shown in FIG. 1B and smaller than the width W2, and a width Wg. It is a rectangle having a depth Dg slightly larger than W2. That is, the arc groove 13b shown in FIG. 4 (C) has a length direction in which the parts EC2 shown in FIG. 1 (B) are substantially aligned in width and height, as indicated by broken lines in FIG. It can be accommodated movably. Furthermore, the cross-sectional shape of the circular arc groove 13b shown in FIG. 4D is slightly larger than the diameter R3 of the component EC3 shown in FIG. 1C and is smaller in width Wg and depth than the length L3. A rectangle having Dg. That is, the arc groove 12b shown in FIG. 4D can accommodate the component EC3 shown in FIG. 1C so as to be movable in the length direction, as indicated by a broken line in FIG.

  As shown in FIGS. 3C and 5, the outlet recess 13c is formed by cutting out a part of the upper surface of the right plate 13 in the left-right direction, and has a predetermined depth reaching the arc groove 13b. Have That is, the uppermost point of the arc groove 13b and the front and rear portions thereof are partially open upward through the outlet recess 13c.

  An intake port forming member 13d made 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 (no symbol) is formed in the intake port forming member 13d, and a screw hole (no symbol) into which the set screw FS is screwed is formed on the left surface of the right plate 13. The intake port forming member 13d has an outer shape that matches the inner shape of the U-shaped recess 12b4 of the central plate 12, and has a narrow portion 13d2 that is narrowed by the arc surface 13d1. Further, the thickness of the intake port forming member 13d matches the thickness of the central plate 12. Further, the radius of curvature of the arc surface 13d1 is the same as or slightly larger than the radius of curvature of the first arc surface 12b1 of the intermediate plate 12, and the center of curvature of the arc surface 13d1 coincides with the center of curvature of the first arc surface 12b1. Yes.

  Since the intake port forming member 13d is attached to the left surface of the right plate 13, as shown in FIG. 6A, the left-side opening of the arc groove 13b is a narrow portion of the intake port forming member 13d. It is partially blocked by 13d2, and the rear end of the blocked portion becomes a postscript inlet 15a.

  6 (B) to 6 (D) show the case where the arc groove 13b shown in FIG. 4 (A) is replaced with the arc groove 13b shown in FIGS. 4 (B) to 4 (D). The positional relationship between the arc groove 13b and the intake port forming member 13d is shown. As in FIG. 6A, the left opening of each arc groove 13b is formed by the narrow width portion 13d2 of the intake port forming member 13d. It is partially blocked, and the rear end of the blocked portion becomes a postscript inlet 15a.

  Furthermore, a rectangular columnar or cylindrical stopper bar 13e formed of metal or plastic is fitted into a linear groove (not indicated) formed on the front side from the uppermost point of the circular arc groove 13b. As shown in FIGS. 3C and 5, the stopper bar 13e has a rear portion protruding toward the outlet recess 13c, and the protruding portion is exposed through the outlet recess 13c. That is, the rear part of the stopper bar 13e enters the open part of the arc groove 13b, and the area of the open part where the stopper bar 13 does not exist serves as a post-outlet port 16.

  To assemble the case 10 shown in FIGS. 2 (A) to 2 (C), the left plate 11 shown in FIG. 3 (A) is superimposed on the left surface of the central plate 12 shown in FIG. 3 (B), and The right plate 13 shown in FIG. 3C is overlaid on the right surface of the central plate 12, and set screws FS are inserted into the screw insertion holes 11a of the left plate 11 and the screw insertion holes 13a of the right plate 13, and Each set screw FS may be screwed into each screw hole 12a of the middle plate 12, and the left plate 11, the central plate 12 and the right plate 13 may be coupled.

  Here, the case 10 is assembled using the set screw FS, but the screw insertion holes 11a and 13a are excluded from the left plate 11 and the right plate 13, and the screw holes 12a are excluded from the center plate 12, Instead of forming three through holes, the three members may be overlapped, and then the three members may be joined by inserting resin pins into the three through holes and thermally melting both ends. . Further, the screw insertion holes 11a and 13a are eliminated from the left plate 11 and the right plate 13, and the screw holes 12a are eliminated from the center plate 12 to bond the three members by heat welding. You may make it do.

  By this assembly, as shown in FIGS. 10 and 11, the left opening of the through hole 12b of the center plate 12 is blocked by the right surface of the left plate 11, and the right opening of the through hole 12b of the center plate 12 is the right plate. 13 is obstructed by the left surface. Further, the intake port forming member 13 d of the right plate 13 is fitted into the inverted U-shaped recess 12 b 4 of the through hole 12 b of the center plate 12. Furthermore, the upper part of the left opening of the arc groove 13b of the right plate 13 is closed by the right surface portion of the central plate 12 where the through hole 12b does not exist. Further, the left-side opening of the outlet recess 13c of the right plate 13 is closed by the right surface portion of the central plate 12 where the through hole 12b does not exist.

  That is, in the case 10, the first arc surface 12b1, the second arc surface 12b2, and the flat surface 12b3 of the through hole 12b, the arc surface 13d1 and the rear surface and the lower surface of the narrow portion 13d2 of the intake port forming member 13d, A storage chamber 14 (see FIGS. 10 and 11) is defined that 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. In this storage chamber 14, a part of the right surface of the left plate 11 is the left side wall of the storage chamber 14, and a part of the left side of the right plate 13 is the right side wall of the storage chamber 14 (referred to in the claims). However, it corresponds to “side wall of storage room”.

  In addition, an arcuate guide groove extending from bottom to top is formed on the inner surface of the right side wall of the storage chamber 14 by a portion where the left-side opening of the arc groove 13b of the right plate 13 is not closed (an angle range portion of about 150 degrees). (Hereinafter referred to as guide groove 13b, see FIG. 10) is formed. As can be seen from FIG. 10, the starting point of the guide groove 13b is located directly below the + mark in the figure.

  Further, the left-side opening of the circular groove 13b of the right plate 13 has the same cross-sectional shape as the guide groove 13b by a portion (angle portion of about 30 degrees), and the storage chamber 14 extends from the upper end of the guide groove 13b. An arcuate supply passage 15 (see FIGS. 9 to 11) directed upward is formed, and an intake port 15a (see FIG. 10) serving as an inlet is formed at the rear end of the supply passage 15. As can be seen from FIG. 10, the end point of the supply passage 15 is located immediately above the + mark in the figure.

  Further, an upper surface opening outlet 16 (see FIGS. 9 to 11) is formed on the upper surface of the case 10 at the front end (tip) of the supply passage 15 and for taking out one component EC1 to the outside. Is done. As can be seen from FIG. 10, the outlet 16 is located immediately above the + mark in FIG.

  Furthermore, since the radius of curvature of the first arc surface 12b1 constituting the storage chamber 14 is larger than the radius of curvature of the outer arc surface 13b1, the outer side of the guide groove 13b has an arc shape having a width according to the difference between the radius of curvature of both. The flat surface FP1 is formed (see FIGS. 8A to 8C and FIG. 10). The width of the flat surface FP1 is generally set to a value that is twice or more the length (L1 to L3) of the components (EC1 to EC3). Further, since the flat surface FP2 is flush with the flat surface FP1 inside the guide groove 13b, the guide groove 13b is positioned so as to be sandwiched between the outer and inner flat surfaces FP1 and FP2. Yes.

  Here, the angle range of the guide groove 13b is about 150 degrees and the angle range of the supply passage 15 is about 30 degrees. However, the angle range of the guide groove 13b may be slightly increased or decreased without changing its lower end position. Further, the angle range of the supply passage 16 may be slightly increased or decreased without changing the upper end position.

  Although illustration is omitted, even when the arc groove 13b shown in FIG. 4A is replaced with the arc groove 13b shown in FIGS. 4B to 4D, the sectional shape of each arc groove 13b is shown. The guide groove 13 b, the supply passage 15, the inlet 15 a, the outlet 16, and two flat surfaces FP 1 and FP 2 are formed together with the storage chamber 14.

  As shown in FIG. 11, 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 is attached to the center of the right surface of the right plate 13 by inserting a set screw into a plurality of screw insertion holes (not shown) provided in the flange portion 20b and screwing it into the screw hole 13f on the right surface of the right plate 13. ing. In this attached state, the center of the shaft body 20a of the support shaft 20 coincides with the center of curvature of the outer arcuate surface 13b1 and the inner arcuate surface 13b2 constituting the guide groove 13b of the right plate 13.

  As shown in FIG. 11, the bearing 30 is a radial type ball bearing, and is attached by fitting an inner ring thereof to the shaft body 20 a of the support shaft 20.

  As shown in FIGS. 7A to 7C, the rotor 40 is provided on the outer periphery of the cylindrical portion 40a, the flange portion 40b provided at the left end of the cylindrical portion 40a, and the left surface outer periphery of the flange portion 40b. And is formed from a metal such as aluminum or plastic that can transmit the magnetic force of the permanent magnet.

  Further, in the annular portion 40c of the rotor 40, a total of eight permanent magnets 40d have respective one magnetic poles that are concentric with the center of the cylindrical portion 40a (corresponding to the rotation center of the rotor 40) (corresponding to a circular orbit described later). ) Are arranged at intervals of 45 degrees. Each permanent magnet 40d has a cylindrical shape having magnetic poles at both end faces, and one magnetic pole is embedded in the annular part 40c so as to be exposed in a substantially flush state with the left face of the annular part 40c. In addition, each permanent magnet 40d has a surface magnetic force sufficient to attract the components (EC1 to EC3) in the storage chamber 14 in the direction of the guide groove 13b. Furthermore, each permanent magnet 40d has the center of one magnetic pole (corresponding to the center of magnetic force where magnetic field lines are most densely located) located on the virtual circle VC. The radius of curvature of the virtual circle VC (circular track described later) is set to be equal to or smaller than the radius of curvature of the outer arcuate surface 13b1 constituting the guide groove 13b and the supply passage 15 of the case 10 and greater than the radius of curvature of the inner arcuate surface 13b2. ing. Incidentally, the polarity of one magnetic pole of each permanent magnet 40d may be all N poles or S poles, or N poles and S poles may be arranged alternately along the virtual circle VC.

  As shown in FIG. 11, the rotor 40 is arranged so that the left surface of the annular portion 40d faces the right surface of the right plate 13 of the case in a state of being parallel or close to the right surface of the case 13 in other words. The inner hole 40a1 of the cylindrical portion 40a is fitted into the outer ring of the bearing 30 so that the one magnetic pole of 40d faces the outer surface of the right side wall of the storage chamber 14 in a parallel or close state with a slight gap. Yes.

  In this attached state, the rotor 40 can rotate around the shaft body 20a of the support shaft 30, and each permanent magnet 40d can move along a circular orbit corresponding to the virtual circle VC along with this rotation. it can.

  The rotation center of the rotor 40 is the center of curvature of the outer arc surface 13b1 and the inner arc surface 13b2 constituting the guide groove 13b and the supply passage 15 of the case 10, and the virtual circle VC where the center of one magnetic pole of each permanent magnet 40d is located. It coincides with the center, and the radius of curvature of the virtual circle VC is set to be equal to or smaller than the radius of curvature of the outer arcuate surface 13b1 constituting the guide groove 13b and the supply passage 15 and greater than the radius of curvature of the inner arcuate surface 13b2. Therefore, one magnetic pole of each permanent magnet 40d moving under a circular orbit corresponding to the virtual circle VC faces the guide groove 13b and the supply passage 15, and the center of each permanent magnet faces the guide groove 13b and the supply passage 15. . Since the right plate 13 of the case 10 can transmit magnetic force, the magnetic force of the permanent magnet 40d facing the guide groove 13b passes through the right plate 13 into the guide groove 13b and the storage chamber 14, and faces the supply passage 15. The magnetic force of the permanent magnet 40 d reaches the supply passage 15 through the right plate 13.

  8A to 8C, the condition (the virtual circle VC (circular orbit) has a radius of curvature equal to or less than the radius of curvature of the outer arcuate surface 13b1 constituting the guide groove 13b and the supply passage 15; and The positional relationship that satisfies the radius of curvature of the inner circular arc surface 13b2) is illustrated.

  FIG. 8A shows a positional relationship in the case of “curvature radius of circular orbit = (curvature radius of outer circular arc surface 13b1 + curvature radius of inner circular arc surface 13b2) / 2”, and FIG. FIG. 8C shows the positional relationship when the radius of curvature of the arc surface 13b1 + the radius of curvature of the inner arc surface 13b2) / 2> the radius of curvature of the circular orbit> the curvature radius of the inner arc surface 13b2. The positional relationship in the case of “the radius of curvature of 13b1> the radius of curvature of the circular orbit> (the radius of curvature of the outer arcuate surface 13b1 + the radius of curvature of the inner arcuate surface 13b2) / 2” is shown.

  Under the above conditions, the positional relationship of FIG. 8 (A) is most preferable, and then the positional relationship of FIGS. 8 (B) and 8 (C) can be said to be preferable. The radius of curvature of the outer arc surface 13b1 "or" the radius of curvature of the circular orbit = the radius of curvature of the outer arc surface 13b1 "is the positional relationship of parts (EC1 to EC3) to the guide groove 13b described later. It is sufficiently possible to perform containment with a high probability.

  FIG. 10 shows a virtual circle (not shown) surrounding the outside of the total of eight permanent magnets 40d substantially matching the first circular arc surface 12b1, but the width of the outer flat surface FP1 is increased, Alternatively, if the permanent magnet 40d having a small diameter is used, the virtual circle is positioned inside the first arc surface 12b1, and if the permanent magnet 40d having a large diameter is used, the virtual circle is the first arc. It comes to be located outside the surface 12b1.

  Although not shown, the conditions are the same even when the arc groove 13b shown in FIG. 4 (A) is replaced with the arc groove 13b shown in FIGS. 4 (B) to 4 (D).

  A rotor drive mechanism (not shown) is for rotating and stopping the rotor 40 in a desired direction. Basically, a motor, a drive gear attached to a motor shaft, a motor control circuit, have. 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 meshed with the gear, the motor 40 moves the rotor 40 in a desired direction. The rotation of the rotor 40 can be stopped by stopping the motor operation.

  Next, with reference to FIG. 12 to FIG. 18, the operation related to the component supply of the bulk feeder to which the component EC1 shown in FIG. 1 (A) is supplied is shown in FIG. 1 (B) and FIG. 1 (C). A description will be given including a modification in the case where the components EC2 and EC3 shown are to be supplied. Incidentally, the + mark shown in FIGS. 12 to 18 indicates the rotation center of the rotor 40.

  When supplying the components, as shown in FIG. 12, a large number of components EC1 are stored in the storage chamber 14 of the case 10 in a loose state (a state in which the directions are not aligned). This storage is performed through a replenishing port (not shown) with an open / close lid provided in the case 10 or a replenishing port (not shown) that can be closed with a seal.

  If the storage amount of the component EC1 is too large, the probability of the component EC1 flowing into the intake port 15a described later decreases, so the maximum storage level of the component EC1 may be about ½ the height of the storage chamber 14. preferable. For example, when the length L1 of the component EC1 is 1.0 mm, even if the case 10 having the same size as that of FIG. 2 is formed and the maximum storage level is about ½ of the height dimension of the storage chamber 14, several tens of thousands. About one part EC1 can be stored.

  After the component EC1 is stored in the storage chamber 14 of the case 10, as shown in FIG. 12, the rotor 40 is rotated several times in the direction of the broken line arrow by the rotor driving mechanism, so )I do.

  As shown in FIG. 12, the rotation of the rotor 40 causes each permanent magnet 40d to move in a state where one magnetic pole of the permanent magnet 40d faces the storage chamber 14 and faces the guide groove 13b (1). The process (2) in which the one magnetic pole of the permanent magnet 40d does not face the storage chamber 14 and moves in a state facing the supply passage 15, and the one magnetic pole of the permanent magnet 40d does not face the storage chamber 14. The moving process (3) is repeated in order.

  In the step (1), the plurality of components EC1 among the loose components EC1 stored in the storage chamber 14 are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d, and the plurality of sucked components EC1 are attracted. Remains in a lump and moves out of the component storage area, moves upward along the guide groove 13b, and reaches the intake port 15a.

  Two flat surfaces FP1 and FP2 are present on the outer and inner sides of the guide groove 13b so as to sandwich the guide groove 13b, and the center of one magnetic pole of the permanent magnet 40d faces the guide groove 13b. Therefore, as shown in FIG. 13, the lump of the plurality of components EC1 attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d covers the guide groove 13b and the flat surfaces FP1 and FP2 on both sides thereof. It becomes a mountain-like form (refer to a two-dot chain line) or a form close to this. That is, as many parts EC1 as possible are sucked in the direction of the guide groove 13b using the flat surfaces FP1 and FP2 existing outside and inside the guide groove 13b. The number of the plurality of components EC1 attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d depends on the remaining number of components EC1 in the storage chamber 14, the surface magnetic force of the permanent magnet 40d, and the like, but a sufficient amount of components EC1. Is housed in the storage chamber 14, and the permanent magnet 40d has a surface magnetic force of 2000 to 4000 gauss, and a sufficient magnetic force reaches the component EC1 in the storage chamber 14, generally several tens to There are hundreds.

  Further, since the center of the one magnetic pole of the permanent magnet 40d faces the guide groove 13b, the component closest to the permanent magnet 40d and facing the center (magnetic force center) of the mass of the plurality of components EC1. The force to be pulled into the guide groove 13b is the strongest on EC1. Moreover, when the mass of the plurality of parts EC1 moves upward along the guide groove 13b, the part EC1 close to the guide groove 13b in the mass of the plurality of parts EC1 has two circles on the opening side of the guide groove 13. An action occurs in which the direction of the arcuate edge is touched and the orientation thereof is corrected.

  That is, in the process (1), as many components EC1 as possible are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d, and are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d. One or a plurality of components EC1 among the plurality of components EC1 can be accommodated in the guide groove 13b in the length direction with high probability based on the above action.

  Incidentally, since the component EC1 has a rectangular parallelepiped shape having a dimensional relationship of length L1> width W1 = height H1, the direction of the component EC1 accommodated in the guide groove 13b is basically the length direction (FIG. 14), and the direction EC differs from the length direction by 90 degrees (see FIG. 15), and the component EC1 not accommodated in the guide groove 13 is in a loose state (see FIG. 13).

  When one or a plurality of components EC1 accommodated in the guide groove 13b is “component EC1 accommodated in the length direction in the guide groove 13b” or “in the length direction in the guide groove 13b” When the “component EC1 accommodated in the guide groove 13b in a direction 90 degrees different from the length direction” is present behind the “component EC1 accommodated in”, as shown in FIG. The component EC1 accommodated in the longitudinal direction moves upward along the guide groove 13b while being attracted by the magnetic force of the permanent magnet 40d, flows into the intake port 15a in the same direction, and enters the supply passage 15. It is captured. At the time of this inflow, “the component EC1 accommodated in the guide groove 13b in a direction different from the length direction by 90 degrees” and “the component EC1 not accommodated in the guide groove 13b” are the narrow portion 13d2 of the intake port forming member 13d. The one magnetic pole of the permanent magnet 40d passes the right side of the intake port 15a and drops downward when the attractive force is reduced.

  Further, from the above action, one or a plurality of components EC1 accommodated in the guide groove 13b are all “component EC1 accommodated in the guide groove 13b in a direction different from the length direction by 90 degrees”. Although the probability is low, in this case, as shown in FIG. 15, “the component EC1 accommodated in the guide groove 13b in a direction different from the length direction by 90 degrees” and “the component EC1 not accommodated in the guide groove 13b”. Is in contact with the rear surface of the narrow portion 13d2 of the intake port forming member 13d, and drops downward when the one magnetic pole of the permanent magnet 40d passes the right side of the intake port 15a and the attractive force is reduced.

  On the other hand, in the process (2), the component EC1 in the length direction flowing into the intake port 15a from the guide groove 13b is attracted by the magnetic force of the permanent magnet 40d as shown in FIG. Then, it moves upward and reaches the take-out port 16, and the component EC1 in the length direction that has reached the take-out port 16 stops when its front end abuts against the rear surface of the stopper bar 13e. Since the rotor 40 rotates several times at the time of preliminary supply, a plurality of components EC1 are connected to each other without or through a gap on the rear side of the leading component EC1 that is in contact with the rear surface of the stopper bar 13e.

  On the other hand, in the process (3), since the magnetic force of the permanent magnet 40d is suppressed from reaching the EC1 in the storage chamber 14, unnecessary fluctuations in the component EC1 in the storage chamber 14 due to the magnetic force of the permanent magnet 40d, for example, Occurrence of fluctuations and the like that are not related to component accommodation in the guide groove 13b and component inflow to the intake port 15a is suppressed.

  After the preliminary supply of the component EC1 is completed, as shown in FIGS. 17 and 18, the one magnetic pole of the permanent magnet 40d is located at the position passing the right side of the outlet 16, and the permanent magnet 40d on the rear side thereof. The rotor 40 is stopped so that one of the magnetic poles is located at the right side of the supply passage 15 (hereinafter, this stop position is referred to as a standby position).

  The reason why the one magnetic pole of the permanent magnet 40d passes the right side of the outlet 16 at the standby position is to prevent the magnetic force of the permanent magnet 40d from affecting the extraction of the component EC1 described later. The reason why one magnetic pole of the rear permanent magnet 40d enters the right side of the supply passage 15 at the standby position is that the plurality of components EC1 fed into the supply passage 15 by the preliminary supply are supplied to the supply passage 15 This is to prevent the inner arcuate surface 13b2 constituting the slide from slipping down and dropping from the intake port 15a.

  The part EC1 is taken out from the bulk feeder at the standby position shown in FIGS. Specifically, the suction nozzle (not shown) of the mounter (electronic component mounting apparatus) is lowered toward the outlet 16 to suck the leading component EC1 existing at the outlet 16, and then the suction nozzle is raised. Is done by. Since the take-out port 16 is located at the uppermost point of the arcuate supply passage 16, even if a plurality of components EC are connected to the rear side of the leading component EC1 existing in the take-out port 16, the subsequent component EC1 Thus, no load, such as a pressing force, is generated that causes trouble in the removal of the leading component EC1.

  After the leading part EC1 existing at the take-out port 16 is taken out, the rotor 40 at the standby position is rotated counterclockwise by a predetermined angle, for example, 45 degrees, 90 degrees, 135 degrees, and 180 degrees, and the rotor 40 Is again stopped at the standby position. Since the removal of the component EC1 can be easily detected by a sensor (not shown), the rotation of the rotor 40 can be started based on the detection signal.

  In the process of rotating the rotor 40 in the standby position by a predetermined angle in the counterclockwise direction, “accommodation of the component EC1 into the guide groove 13b”, “inflow of the component EC1 from the guide groove 13b to the intake port 15a”, and “ The movement of the part EC1 in the supply passage 16 is performed in the same manner as described above, and the part EC1 is again supplied to the outlet 16. Thereafter, the rotor 40 at the standby position rotates counterclockwise by a predetermined angle each time the leading part EC1 existing at the outlet 116 is taken out.

  Although not shown, even when the arc groove 13b shown in FIG. 4A is replaced with the arc groove 13b shown in FIGS. 4B to 4D, the component EC1 shown in FIG. The same supply operation as described above can be realized for EC3. Incidentally, when the guide groove 13b shown in FIG. 4 (A) is replaced with the guide groove 13b shown in FIG. 4 (B), the component EC1 has a length direction in which the surfaces of the width or height are not aligned ( In FIG. 4B, the broken line can be accommodated in the guide groove 13b. However, in the process of moving in the guide groove 13b or the process of moving in the supply passage 15, the component EC1 itself is displaced to stabilize its posture. Therefore, the component EC1 is supplied to the take-out port 16 in a posture where the surfaces of the width or height are aligned.

  Next, the effect obtained by the above bulk feeder will be described.

  (1) As described above, the center of one magnetic pole of the permanent magnet 40d facing the guide groove 13b faces the inside of the guide groove 13b, and the guide groove 13b is provided on the outer side and the inner side of the guide groove 13b. Two flat surfaces FP1 and FP2 exist in a flush state so as to be sandwiched.

  Therefore, when a plurality of components (EC1 to EC3) among the loose components (EC1 to EC3) stored in the storage chamber 14 are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d, the guide groove As many parts (EC1 to EC3) as possible can be sucked in the direction of the guide groove 13b using the two flat surfaces FP1 and FP2 existing outside and inside 13b.

  Of the plurality of components (EC1 to EC3) attracted in the direction of the guide groove 13b, the component (EC1 to EC3) that is closest to the one magnetic pole of the permanent magnet 40d and faces the center (magnetic center). The force to be pulled into the guide groove 13b acts most strongly. In addition, when the mass of the plurality of components (EC1 to EC3) moves upward along the guide groove 13b, the component (EC1 to EC3) close to the guide groove 13b among the mass of the plurality of components (EC1 to EC3). Comes into contact with the two arcuate edges on the opening side of the guide groove 13 and the action is corrected.

  That is, a plurality of components (EC1 to EC3) as much as possible are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d, and a plurality of components are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d. One or a plurality of parts (EC1 to EC3) of (EC1 to EC3) can be accommodated in the guide groove 13b in the length direction with high probability based on the above action. Further, the components (EC1 to EC3) accommodated in the length direction in the guide groove 13b move upward along the guide groove 13b while being attracted by the magnetic force of the permanent magnet 40d, and flow into the intake port 15a. Further, the length-oriented components (EC1 to EC3) that have flowed into the intake port 15a from the guide groove 13b move upward along the supply passage 15 while being attracted by the magnetic force of the permanent magnet 40d, and then to the take-out port 16. Reach.

  In short, the parts (EC1 to EC3) attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d can be accommodated in the guide groove 13b with a high probability in the length direction. The number of parts (EC1 to EC3) flowing into the opening 15a in the length direction can be increased, and thereby the efficiency of the parts (EC1 to EC3) flowing into the intake port 15a in the length direction, that is, the parts ( The efficiency with which EC1 to EC3) are supplied to the outlet 16 in the length direction can be increased. Therefore, even if the time interval at which the components (EC1 to EC3) are taken out from the take-out port 16 is shortened, for example, 50 msec or less, it is possible to exhibit the supply capability sufficiently corresponding to the time interval.

  (2) As described above, the arc-shaped guide groove 13b is formed by a portion where the left-side opening of the arc-shaped groove 13b of the right plate 13 is not closed, and the arc-shaped supply passage 15 is formed by the right plate. The left-side opening of 13 arcuate grooves 13b is formed by a closed portion.

  That is, since the guide groove 13b and the supply passage 15 can be formed by using one arcuate groove 13b, the formation of the guide groove 13b and the supply passage 15 is extremely easy, and the guide groove 13b having the same cross-sectional shape and the supply are provided. It is also easy to obtain the passage 15 continuously.

  (3) As described above, the arc groove 13b of the right plate 13 is formed from directly below to a position directly above the position corresponding to the rotation center of the rotor 40, and is provided at the tip of the supply passage 15. The take-out port 16 is located immediately above the position corresponding to the rotation center of the rotor 40.

  That is, since the starting point of the guide groove 13b is located immediately above the position corresponding to the rotation center of the rotor 40, even when the remaining number of components (EC1 to EC3) stored in the storage chamber 14 is reduced. The components (EC1 to EC3) can be reliably sucked in the direction of the guide groove 13e and supplied to the outlet 16.

  Further, since the outlet 16 is located immediately above the position corresponding to the rotation center of the rotor 40, the case 10, and thus the bulk feeder itself, can be configured compactly. Moreover, since the length of the supply passage 15 from the intake port 15a to the outlet 16 can be shortened, the movement of the parts (EC1 to EC3) in the supply passage 15 and the movement of the parts (EC1 to EC3) to the outlet 16 are performed. Supply can be performed smoothly.

  (4) As described above, the cross-sectional shape of the arc groove 13b of the right plate 13 is appropriately set according to the components (EC1 to EC3) stored in the storage chamber 14 (FIG. 4A). (Refer to FIG.4 (D)).

  That is, the components (EC1 to EC3) to be supplied by the bulk feeder can be easily changed simply by changing the cross-sectional shape of the arc groove 13b.

  (5) As described above, the radius of curvature of the virtual circle VC (circular orbit) where the center of one magnetic pole of each permanent magnet 40d is located is the curvature of the outer arcuate surface 13b1 constituting the guide groove 13b and the supply passage 15. It is set to be equal to or smaller than the radius and larger than the radius of curvature of the inner circular arc surface 13b2.

  That is, with this condition setting, the center of one magnetic pole of each permanent magnet 40d that moves under a circular orbit corresponding to the virtual circle VC can be reliably directed toward the guide groove 13b and the supply passage 15. Within the above conditions, the positional relationship in the case of “curvature radius of circular orbit = (curvature radius of outer arc surface 13b1 + curvature radius of inner arc surface 13b2) / 2” shown in FIG. 8A is most preferable. Next, the position in the case of “(curvature radius of outer arc surface 13b1 + curvature radius of inner arc surface 13b2) / 2> curvature radius of circular path> curvature radius of inner arc surface 13b2” shown in FIG. 8B. It can be said that the relationship and the “radius of curvature of the outer arc surface 13b1> the radius of curvature of the circular orbit> (the radius of curvature of the outer arc surface 13b1 + the radius of curvature of the inner arc surface 13b2) / 2 shown in FIG. , Even if the positional relationship of “the radius of curvature of the circular track = the radius of curvature of the outer circular arc surface 13b1” or “the radius of curvature of the circular track = the radius of curvature of the outer circular arc surface 13b1” is given, the components (EC1 to EC3) to the guide groove 13b ) With high probability It is sufficiently possible.

  (6) As described above, in the annular portion 40c of the rotor 40, a total of eight permanent magnets 40d have virtual poles whose one magnetic pole is concentric with the center of the cylindrical portion 40a (corresponding to the rotation center of the rotor 40). They are arranged at intervals of 45 degrees along a circle VC (corresponding to a circular orbit described later).

  That is, since the plurality of permanent magnets 40d are arranged at equiangular intervals, the rotor 40 in the standby position after the leading parts (EC1 to EC3) existing at the outlet 16 are taken out by a predetermined angle in the counterclockwise direction. The motor control circuit can easily control the operation of stopping after rotating, for example, the operation of rotating 45 °, 90 °, 135 ° or 180 °.

[Modification of case]
(1) The case 10 is constituted by combining three parts (the left plate 11, the center plate 12 and the right plate 13), but the guide groove 13b, the supply passage 15, the intake port 15a and the outlet port are similar. If it has 16, the case of another structure may be used instead.

  The case 10-1 shown in FIG. 19, FIG. 20A and FIG. 20B is configured by combining a left plate 11-1 and a right plate 13-1, and the intake port forming member. Does not have 13d.

  As shown in FIG. 20A, the left plate 11-1 has a predetermined rectangular thickness as a left-side outline, and is made of metal or plastic. The left plate 11-1 has screw holes 11a at four corners and a storage chamber recess 11b on the right surface.

  The concave portion 11b for the storage chamber has a curvature center smaller than that of the first arc surface 11b1 and the first arc surface 11b1 having the center of curvature at the + mark in the figure and having a predetermined radius of curvature, and the first arc. A second arc surface 11b2 having the same center of curvature as the surface 11b1, a first plane 11b3 connecting the lower end of the first arc surface 11b1 and the lower end of the second arc surface 11b2, and an upper end and a second arc of the first arc surface 11b1. It has the 2nd plane 11b4 which connects the upper end of the surface 11b2, and the left side surface 11b5 which hits the bottom of the recessed part 11b for storage chambers. The radius of curvature of the first arc surface 11b1 is larger than the radius of curvature of the outer arc surface 13b1 of the arc groove 13b described later, and the radius of curvature of the second arc surface 11b2 is larger than the radius of curvature of the inner arc surface 13b2 of the arc groove 13b described later. small.

  As shown in FIG. 20 (B), the right plate 13-1 has the same left side view outline as the left plate 11-1 and has a smaller thickness than the left plate 11-1, and the permanent magnet 40d It is made of a metal such as aluminum or plastic that can transmit magnetic force. This right plate 13-1 has screw insertion holes 13a at the four corners, an arc groove 13b at the rear side of the left surface, a recess 13c for the outlet at the center of the upper surface, and for fixing the support shaft 20 with screws. A plurality of screw holes 13f are provided at the center of the right surface.

  The arc groove 13b has a center of curvature at the + mark in the drawing, has an outer arc surface 13b1 having a predetermined radius of curvature, a smaller radius of curvature than the outer arc surface 13b1, and the outer arc surface 13b1 and the center of curvature. And the difference in the radius of curvature between the outer arc surface 13b1 and the inner arc surface 13b2 defines the width Wg (see FIGS. 4A to 4D). . This arc groove 13b is formed in an angle range of about 180 degrees from the bottom to the top, specifically from directly below the + mark in the figure to the top, and the front side from the uppermost point of the arc groove 13b. This part is a straight groove (no symbol) extending forward with the same width Wg. Incidentally, the cross-sectional shape of the arc groove 13b shown in FIGS. 4A to 4D is adopted as the cross-sectional shape of the arc groove 13b.

  The outlet recess 13c is formed by cutting away a part of the upper surface of the right plate 13-1 in the left-right direction, and has a predetermined depth reaching the arc groove 13b. That is, the uppermost point of the arc groove 13b and the front and rear portions thereof are partially open upward through the outlet recess 13c.

  Furthermore, a rectangular columnar or cylindrical stopper bar 13e formed of metal or plastic is fitted into a linear groove (not indicated) formed on the front side from the uppermost point of the circular arc groove 13b. The stopper bar 13e has a rear portion protruding toward the outlet recess 13c, and the protruding portion is exposed through the outlet recess 13c. That is, the rear part of the stopper bar 13e enters the open part of the arc groove 13b, and the area of the open part where the stopper bar 13 does not exist is the take-out port 16.

  To assemble the case 10-1 shown in FIG. 19, the left side of the right plate 13-1 shown in FIG. 20B is overlapped with the right side of the left plate 11-1 shown in FIG. A set screw FS is inserted into each screw insertion hole 13a of the plate 13-1, and each set screw FS is screwed into each screw hole 11a of the left plate 11-1, so that the left plate 11-1 and the right plate 13-1 are connected. What is necessary is just to combine.

  Here, the case 10-1 is assembled using the set screw FS, but the screw hole 11a is excluded from the left plate 11-1, and the screw insertion hole 13a is excluded from the right plate 13-1. Instead of forming a through hole on both sides, the left plate 11-1 and the right plate 13-1 are overlapped, and then a resin pin is inserted into both through holes and both ends are thermally melted to bond the two. You may make it do. Further, the screw hole 11a is eliminated from the left plate 11-1, and the screw insertion hole 13a is eliminated from the right plate 13-1, and the contact surfaces thereof are thermally welded to perform the coupling between them. Also good.

  With this assembly, the right opening of the storage chamber recess 11b of the left plate 11-1 is closed by the left surface of the right plate 13-1. Further, the upper part of the left opening of the arc groove 13b of the right plate 13-1 is closed by the right surface portion where the recess 11b for the storage chamber of the left plate 11-1 does not exist. Further, the left opening of the outlet recess 13c of the right plate 13-1 is blocked by the right surface portion of the left plate 11-1 where the storage chamber recess 11b does not exist.

  That is, in the case 10-1, as in the case 10, the first arc surface 11b1, the second arc surface 11b2, the first plane 11b3, and the second plane 11b4 of the storage chamber recess 11b of the left plate 11-1. The left side inner surface 11b5 and a part of the left surface of the right plate 13-1 define a storage chamber 14 having a substantially circular left side profile (see FIG. 19). In this storage chamber 14, the left inner surface 11b5 of the left plate 11-1 serves as the left side wall of the storage chamber 14, and a part of the left surface of the right plate 13-1 is the right side wall of the storage chamber. This corresponds to the “side wall of the storage room” in terms of the range).

  Further, on the inner surface of the right side wall of the storage chamber 14, similarly to the case 10, the lower left opening of the arc groove 13 b of the right plate 13-1 is not closed by the portion (angle range portion of about 150 degrees). An arcuate guide groove 13b (hereinafter, referred to as a guide groove 13b) is formed.

  Further, the portion having the left opening of the circular arc groove 13b of the right plate 13-1 closed (about 30 degree angle range portion) has the same cross-sectional shape as the guide groove 13b, similar to the case 10, and An arcuate supply passage 15 is formed from the upper end of the guide groove 13b toward the upper side of the storage chamber 14, and an intake port 15a serving as an inlet is formed at the rear end of the supply passage 15.

  Further, similarly to the case 10, the upper surface of the case 10-1 is located at the front end (tip) of the supply passage 15 and has an upper surface opening for taking out one component (EC1 to EC3) to the outside. An outlet 16 is formed.

  Furthermore, since the radius of curvature of the first arc surface 11b1 constituting the storage chamber 14 is larger than the radius of curvature of the outer arc surface 13b1, there is a difference between the curvature radii of the two on the outer side of the guide groove 13b as in the case 10. An arcuate flat surface FP1 having a corresponding width is formed. The width of the flat surface FP1 is generally set to a value that is twice or more the length (L1 to L3) of the components (EC1 to EC3). Since the flat surface FP2 that is flush with the flat surface FP1 exists inside the guide groove 13b, the guide groove 13b is positioned so as to be sandwiched between the two flat surfaces FP1 and FP2.

  Even a bulk feeder using the case 10-1 in place of the case 10 can realize the same supply operation as described above and can obtain the same effect as described above.

  (2) Although the case 10 and the case 10-1 have the stopper bar 13e, the stopper bar 13e may be eliminated if a portion serving as a substitute for the stopper bar 13e is provided.

  The right plate 13-2 shown in FIG. 21 (A) corresponds to the right plate 13 of the case 10 and excludes a straight groove (no symbol) provided in the front portion from the uppermost point of the arc groove 13b ′. The wall at the front end (tip) of the arc groove 13b is used as a stopper. In addition, in order not to interfere with the removal of the leading components (EC1 to EC3) in contact with the front end (tip) wall of the arc groove 13b ′ by the suction nozzle (not shown) of the mounter (electronic component mounting device), The shape of the outlet recess 13c ′ is changed to a shape having a front inclined surface.

  The right plate 13-3 shown in FIG. 21 (B) corresponds to the right plate 13-1 of the case 10-1, and is a straight groove (reference number) provided in the front portion from the uppermost point of the arc groove 13b ′. None) and the wall at the front end (tip) of the arc groove 13b ′ is used as a stopper. In addition, in order not to interfere with the removal of the leading components (EC1 to EC3) in contact with the front end (tip) wall of the arc groove 13b ′ by the suction nozzle (not shown) of the mounter (electronic component mounting device), The shape of the outlet recess 13c ′ is changed to a shape having a front inclined surface.

  A case where the right plate 13 of the case 10 is changed to the right plate 13-2 shown in FIG. 21A, or the right plate 13-1 of the case 10-1 is a right plate shown in FIG. 21B. Even a bulk feeder using the case changed to 13-3 instead of the case 10 can realize the same supply operation as described above, and can obtain the same effect as described above.

  (3) In the case 10 and the case 10-1, the first arcuate surfaces 12b1 and 11b1 constituting the respective storage chambers 14 are perpendicular to the left surfaces of the right plates 13 and 13-1. The arcuate surfaces 12b1 and 11b1 may be inclined at an acute angle with respect to the left surfaces of the right plates 13 and 13-1.

  The case 10-2 shown in FIG. 22A corresponds to the case 10, and the first arcuate surface 12b1 'has a curved surface with a substantially ¼ circle cross section. A case 10-3 shown in FIG. 22B corresponds to the case 10-1, and the cross section of the first arc surface 11b1 'is a curved surface forming a substantially ¼ circle.

  By adopting such first arcuate surfaces 12b1 ′ and 11b1 ′, even when the remaining number of components (EC1 to EC3) stored in the storage chamber 14 is reduced, the first arcuate surfaces 12b1 ′ and 11b1 are used. The remaining parts (EC1 to EC3) can be moved by their own weight toward the left surfaces of the right plates 13 and 13-1, that is, toward the lower end of the guide groove 13b by using the inclination of '.

  In other words, if the left and right dimensions of the storage chamber 14 are increased to increase the number of components (EC1 to EC3) stored, the magnetic force of the permanent magnet 40d will hardly reach the components (EC1 to EC3) away from the permanent magnet 40d. Even in such a case, by moving the remaining parts (EC1 to EC3) by their own weight toward the lower end of the guide groove 13b, the parts (EC1 to EC3) can be reliably attracted by the magnetic force of the permanent magnet 40d. it can.

  FIGS. 22A and 22B show the first arcuate surfaces 11b1 ′ and 11b1 ′ having a curved surface forming a substantially ¼ circle, but the remaining parts (EC1 to EC3) are reduced. If the cross-sectional shape can move by its own weight toward the lower end of the guide groove 13b, for example, the cross-section may be a flat inclined surface inclined acutely with respect to the left surfaces of the right plates 13 and 13-1. The same effect as described above can be obtained.

  Of course, even in the case of a bulk feeder using the case 10-2 shown in FIG. 22A or the case 10-3 shown in FIG. And the same effects as described above can be obtained.

[Modification of rotor]
(1) Although the rotor 40 has a total of eight permanent magnets 40d at intervals of 45 degrees, the number and angular interval of the permanent magnets 40d may be changed as necessary.

  The rotor 40-1 shown in FIG. 23A has a total of 16 permanent magnets 40d at intervals of 22.5 degrees. Further, the rotor 40-2 shown in FIG. 23B has a total of four permanent magnets 40d at intervals of 90 degrees.

  The number of permanent magnets 40d provided in the rotor 40 is related to the rotational speed of the rotor 40, but the number of permanent magnets 40d is preferably 4 to 16 in order to accurately perform the above-described supply operation. Further, the angular intervals of the permanent magnets 40d do not have to be equal, but it is easier to control the rotation of the rotor 40 in the supply operation when the intervals are equal.

  Even with this bulk feeder using the rotor 40-1 or the rotor 40-2 in place of the rotor 40, the same feeding operation as described above can be realized and the same effect as described above can be obtained.

  (2) Although the rotor 40, the rotor 40-1, and the rotor 40-2 use a columnar shape as the permanent magnet 40d, the permanent magnet 40d uses a shape other than the columnar shape. Also good.

  The rotor 40-2 shown in FIG. 23B uses a quadrangular prism as the permanent magnet 40d ', and the center of one magnetic pole of each permanent magnet 40d' coincides with the permanent magnet 40d. Although it is possible to use a triangular prism or a polygonal prism having five or more corners as each permanent magnet, it is preferable to use a cylinder or a quadrangular prism in view of the component cost of the permanent magnet.

  Even a bulk feeder using this rotor 40-3 in place of the rotor 40 can realize the same supply operation as described above and can obtain the same effect as described above.

  10, 10-1, 10-2, 10-3 ... case, 13b ... guide groove (arc groove), 13b1 ... outer arc surface, 13b2 ... inner arc surface, FP1, FP2 ... flat surface, 14 ... storage chamber, 15 ... Supply passage, 15a ... Inlet, 16 ... Outlet, 40, 40-1, 40-2, 40-3 ... Rotor, 40d, 40d '... Permanent magnet, VC ... Circular orbit (virtual circle), EC1 EC3 ... Parts.

Claims (12)

A bulk feeder for supplying loose parts to a take-out port in a predetermined direction, the bulk feeder comprising:
A storage chamber for storing a large number of parts that can be attracted by magnetic force in a loose state;
A rotor rotatably disposed outside the side wall of the storage chamber;
A plurality of permanent magnets provided on the rotor at intervals so that one magnetic pole faces the storage chamber and the one magnetic pole follows a predetermined circular orbit concentric with the rotation center of the rotor;
An arc-shaped guide provided on the inner surface of the side wall of the storage chamber from the bottom to the top so as to follow a predetermined circular trajectory, and for storing the components in the storage chamber in a predetermined direction and moving them upward in the same direction Groove,
It is provided from the upper end of the guide groove to the upper side of the storage chamber so as to follow a predetermined circular orbit, and for taking in a predetermined part moving through the guide groove through the intake port and moving it upward in the same direction An arcuate supply passage;
A top opening opening provided at the tip of the supply passage for moving the inside of the supply passage and taking out a component in a predetermined direction supplied to the tip;
The center of one magnetic pole of each permanent magnet is located on a predetermined circular orbit, and the center of one magnetic pole of each permanent magnet moving under the predetermined circular orbit is directed in the guide groove and the supply passage, In addition, two flat surfaces are present on the outer side and the inner side of the guide groove where one magnetic pole of each permanent magnet faces, so as to sandwich the guide groove. The bulk feeder according to claim 1,
The supply passage is formed by a portion where the upper portion of the opening of the arc groove provided in the predetermined angle range on the inner surface of the side wall of the storage chamber is closed, and the guide groove is formed by a portion where the opening of the arc groove is not closed Has been. The bulk feeder of claim 2,
The arc groove is formed from directly under the position corresponding to the rotation center of the rotor, and directly above, and the outlet provided at the tip of the supply passage is directly above the position corresponding to the rotation center of the rotor. To position. The bulk feeder according to claim 2,
When the component stored in the storage chamber has a rectangular parallelepiped shape having a dimensional relationship of length> width = height, the cross-sectional shape of the arc groove is slightly larger than the width or height of the component, and more than the length. A rectangle with a small width and depth. The bulk feeder according to claim 2,
When the component stored in the storage chamber has a rectangular parallelepiped shape having a dimensional relationship of length>width> height, the cross-sectional shape of the arc groove is slightly larger than the height of the component and smaller than the width. And a rectangle with a depth slightly larger than the width. The bulk feeder according to claim 2,
When the component housed in the storage chamber has a cylindrical shape having a dimensional relationship of length> diameter, the cross-sectional shape of the arc groove is slightly larger than the diameter of the component and has a width and depth smaller than the length. A rectangle with The bulk feeder according to claim 2,
The curvature radius of the predetermined circular orbit is set to be equal to or less than the curvature radius of the outer arc surface of the arc groove and equal to or more than the curvature radius of the inner arc surface. The bulk feeder according to claim 7,
The radius of curvature of the predetermined circular orbit is: curvature radius of the predetermined circular orbit = (curvature radius of the outer arc surface + curvature radius of the inner arc surface) / 2. The bulk feeder according to claim 7,
The curvature radius of the predetermined circular orbit is (the curvature radius of the outer circular arc surface + the curvature radius of the inner circular arc surface) / 2> the curvature radius of the predetermined circular orbit> the curvature radius of the inner circular arc surface. The bulk feeder according to claim 7,
The curvature radius of the predetermined circular orbit is such that the curvature radius of the outer circular arc surface> the curvature radius of the predetermined circular orbit> (the curvature radius of the outer circular arc surface + the curvature radius of the inner circular arc surface) / 2. The bulk feeder according to claim 1,
The plurality of permanent magnets are arranged at equiangular intervals so that the centers of the respective one magnetic poles are located on a predetermined circular orbit. The bulk feeder according to claim 11,
The total number of permanent magnets is eight, and the total of eight permanent magnets are arranged at intervals of 45 degrees.

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