JP2010161347A - Bulk feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bulk feeder for exhibiting capability of supplying components through an outlet at short time intervals. <P>SOLUTION: The bulk feeder includes: a case 10 including a storage chamber 14, a guide groove 13b, an inlet 15a, a supply passage 15, a stopper rod 13e, and an outlet 16; and a rotor 40 having a plurality of permanent magnets 40d. The stopper rod 13e is magnetized by means of the magnetic force of the permanent magnets 40d, and the rotor 40 has a standby position at which a magnetic pole of the permanent magnets 40d passes through the right side of the outlet 16 and stops, so as to eject a component. The stopper rod 13e is magnetized by means of the magnetic force of the permanent magnet 40d stopped at the standby position, and a component EC1 contacting the stopper rod 13e is absorbed by means of the magnetic force of the magnetized stopper rod 13e. <P>COPYRIGHT: (C)2010,JPO&INPIT

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, when a part is moved by its own weight downward through a passage, the cross-sectional shape of the passage is usually determined so that a part of the maximum size can pass within a dimensional tolerance. However, in the bulk feeder, along with the fact that the length of the passage is very long compared to the length of the part, the part of the smallest size within the dimensional tolerance is inclined in the process of moving in the passage and clogs the part. In addition, since the weight per part is light, it is difficult to move the part smoothly by its own weight, and as a result, the efficiency with which the part is supplied to the portion corresponding to the outlet is reduced. End up.

  In addition, this type of bulk feeder is frequently used as a component supply means for a mounter (component mounting apparatus), and there is a high-speed mounter with a short mounting time per component. There is a need for bulk feeders that have the ability to adapt, i.e., the ability to supply parts to the outlet in a short time interval, e.g., less than 50 msec. 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 stopper bar with which a part oriented in a predetermined direction that moves in the supply passage comes into contact, and a take-out opening in the top surface for taking out the component that has come into contact with the stopper bar and stopped from the supply passage. The stopper rod is a magnet that can be magnetized by the magnetic force of the permanent magnet, and the rotor is positioned at the position where one magnetic pole of the permanent magnet has stopped after passing outside the take-out port as a standby position for picking up parts. In the standby position, the stopper bar is magnetized by the magnetic force of the stopped permanent magnet, and the components that are in contact with the stopper bar are attracted by the magnetic force of the magnetized stopper bar. .

  In this bulk feeder, a plurality of parts out of loose parts housed in the storage chamber are sucked in the direction of the guide groove by the magnetic force of the permanent magnet, and the sucked parts are moved along the guide groove. The function of accommodating one or a plurality of parts in a predetermined direction in the guide groove by moving them upward and the one or more parts accommodated in the guide groove in a predetermined direction by the magnetic force of the permanent magnet A function of feeding upward into the supply passage through the intake port by moving upward along the guide groove while sucking, and the supply passage while sucking a predetermined-direction component fed into the supply passage by the magnetic force of the permanent magnet The top part in the supply passage is brought into contact with the stopper bar and stopped so as to be taken out from the outlet of the upper surface opening.

  In other words, the supply passage is provided from the upper end of the guide groove toward the upper side of the storage chamber, and the outlet of the upper surface opening is provided at the front end of the supply passage. It is much shorter than the feeder. In addition, since the component in a predetermined direction fed into the supply passage moves upward along the supply passage while being attracted by the magnetic force of the permanent magnet, the component may not be inclined to cause component clogging. In addition, even if the weight per part is light, the part can be reliably moved upward. As a result, the efficiency with which the parts are supplied to the take-out port in a predetermined direction can be increased. Therefore, even if the time interval at which the part is taken out from the take-out port is shortened, for example, 50 msec or less, the time interval is sufficient. The supply capability corresponding to can be demonstrated.

  In addition, as the stopper bar, a magnet that can be magnetized by the magnetic force of the permanent magnet is used, and the rotor has a position where one magnetic pole of the permanent magnet has stopped after passing outside the take-out port as a standby position for parts removal, In the standby position, the stopper bar is magnetized by the magnetic force of the stopped permanent magnet, and the leading part that contacts the stopper bar is attracted by the magnetic force of the magnetized stopper bar. .

  In other words, at the standby position, the leading part abutting against the stopper bar can be adsorbed by the magnetic force of the magnetized stopper bar, and the position and posture of the leading part can be maintained. Even if the time interval at which the parts are taken out from the machine becomes shorter, the work of taking out the first part from the take-out port can be performed well.

  Furthermore, since the stopper bar is magnetized by the magnetic force of the permanent magnet stopped at the standby position, the magnetic force (attraction force) generated in the stopper bar can be adjusted to an appropriate level by changing the standby position.

  That is, if a permanent magnet stopper having the same size as the stopper bar is used instead of the stopper bar, the position and posture of the leading part can be maintained by magnetic force. However, when such a permanent magnet stopper is used, the stopper bar Compared with the case of using, the cost of parts increases. Further, since the permanent magnet stopper has a unique surface magnetic force, the magnetic force adjustment (adsorption force adjustment) cannot be performed as described above. In other words, in order to solve such a problem, a method is adopted in which the stopper rod is magnetized by the magnetic force of the permanent magnet stopped at the standby position.

  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 cross-sectional view of the right plate showing the arc groove of the right 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 right board which shows the modification of a slot. 5A is a perspective view of the stopper rod shown in FIG. 3C, and FIG. 5B is a perspective view of the stopper rod showing a modification of the stopper rod shown in FIG. 5A. FIG. 6 is a partially enlarged top view of the right plate shown in FIG. 7A is a partially enlarged cross-sectional view of the right plate showing the positional relationship between the circular arc groove and the intake port forming member shown in FIG. 4A, and FIGS. 7B to 7D are FIGS. It is the elements on larger scale of the right board which show the positional relationship of the circular-arc groove | channel shown in (B)-FIG.4 (D), and the intake port formation member. 8A is a left side view of the rotor shown in FIGS. 2A to 2C, FIG. 8B is a top view thereof, and FIG. 8C is S3-S3 in FIG. 8A. It is sectional drawing which follows a line. 9 (A) to 9 (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. 10 is a partially enlarged top view of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 11 is a cross-sectional view taken along line S1-S1 of FIG. FIG. 12 is a cross-sectional view taken along line S2-S2 of FIG. 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 an operation explanatory diagram of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 20 is a diagram for explaining the operation of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 21 is an operation explanatory diagram of the bulk feeder shown in FIGS. 2 (A) to 2 (C). 22A is a partially enlarged top view corresponding to FIG. 19 showing a modification of the stopper rod and its mounting structure, and FIG. 22B is a cross-sectional view taken along line S4-S4 of FIG. 22A. FIG. 23 is a partially enlarged top view corresponding to FIG. 22 (A) showing a modification of the stopper rod shown in FIG. 22 (A). FIG. 24A is a partially enlarged top view corresponding to FIG. 19 showing another modification of the stopper rod and its mounting structure, and FIG. 24B is a cross-sectional view taken along the line S5-S5 in FIG. . FIG. 25 is a partially enlarged top view corresponding to FIG. 24A showing a modification of the stopper rod shown in FIG. FIG. 26 is a cross-sectional view corresponding to FIG. 27A is a right side view of the left plate constituting the case shown in FIG. 26, and FIG. 27B is a left side view of the right plate. 28A is a cross-sectional view corresponding to FIG. 12 showing another modification of the case, and FIG. 28B is a cross-sectional view corresponding to FIG. 26 showing another modification of the case. 29A is a left side view corresponding to FIG. 8A showing a modification of the rotor, and FIG. 29B is a left side view corresponding to FIG. 8A showing another modification of the rotor. FIG. 30 is a left side view corresponding to FIG. 8A showing another modification of the rotor.

  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 12, 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 12 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. 11).

  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)). The 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 drawing to the top. Further, a straight groove GR (see FIG. 6) having the same cross-sectional shape as that of the arc groove 13b is provided on the front side from the uppermost point of the arc groove 13b, and three surfaces defining the width and depth thereof are the width of the arc groove 13b. It is provided to be continuous with the three surfaces that define Wg and depth Dg.

  Further, as shown in FIG. 4A, the cross-sectional shape of the arc groove 13b is slightly larger than the width W1 or the height H1 of the component EC1, and smaller than the end face diagonal dimension D1 and the length L1. A rectangle having a width Wg and a depth Dg. That is, the arc groove 13b shown in FIG. 4 (A) can accommodate the component EC1 so as to be movable in a length direction in which the surfaces of the widths or heights are substantially aligned, as indicated by the broken line in FIG.

  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, as shown by the broken line in FIG. 4B, the arc groove 13b shown in FIG. 4B can accommodate the component EC1 so as to be movable in the length direction regardless of the direction of the surface of the width and height. 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 circular arc groove 13b shown in FIG. 4C can accommodate the component EC2 so as to be movable in the length direction in which the surfaces of the width and the height are substantially aligned, as shown by the broken line in FIG. 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 so as to be movable in the length direction, as indicated by a broken line in FIG.

  As shown in FIGS. 3C and 6, the outlet recess 13c is formed by cutting a part of the upper surface of the right plate 13, specifically, the uppermost point of the arc groove 13b and the upper side of the front and rear parts thereof in the left-right direction. It is formed so as to lack, and has a predetermined depth reaching the circular arc groove 13b and the linear groove GR. That is, the uppermost point and the rear part of the arc groove 13b and the rear end and the front part of the linear groove GR are partially opened 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. 7A, the left 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.

  7 (B) to 7 (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. 7A, 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.

  Further, the linear groove GR formed on the front side from the uppermost point of the arc groove 13b has a cylindrical stopper bar 13e shown in FIG. 5 (A), as shown in FIGS. 3 (C) and 6, or A quadrangular prism-shaped stopper bar 13e shown in FIG. 5B is attached by press-fitting or bonding. This stopper bar 13e is used which can be magnetized by the magnetic force of a permanent magnet 40d to be described later. Specifically, a stopper rod 13e formed of a material such as iron or nickel belonging to a ferromagnetic material, or a layer made of another material belonging to a ferromagnetic material over the entire surface of a base material made of a material belonging to a ferromagnetic material. A stopper rod 13e formed by plating or the like, or a stopper rod 13e formed by plating or the like on the entire surface of a base material made of a material (metal or plastic) that does not belong to a ferromagnetic material. It is used.

  As described above, since the cross-sectional shape of the linear groove GR is the same as that of the arc groove 13b, that is, a rectangle having the same width Wg and depth Dg as the arc groove 13b (see FIG. 4A), it is cylindrical. The diameter R4 of the stopper rod 13e (see FIG. 5A) and the width W4 and height H4 (see FIG. 5B) of the quadrangular prism-shaped stopper rod 13e are the width and depth of the linear groove GR. Is set accordingly. Further, since the rear end of the straight groove GR and the front portion thereof are partially opened upward through the outlet recess 13c, as shown in FIG. 6, the cylinder attached in the straight groove GR. The rear part of the rectangular or quadrangular prism-shaped stopper bar 13e protrudes toward the outlet recess 13c and is exposed through the outlet recess 13c. That is, the rear portion of the stopper bar 13e enters the open portion formed by the recess 13c for the outlet, and the region of the open portion where the stopper bar 13e does not exist is the post-outlet port 16 described later.

  Although not shown, 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), the highest point of each arc groove 13b. If a similar straight groove is formed on the front side from the front, a cylindrical or quadrangular prism-shaped stopper bar 13e corresponding to the cross-sectional shape of the straight groove can be attached, and a post-outlet outlet 16 can also be formed.

  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 a through hole in the three parties, the three members are overlapped, and then the plastic pins are inserted into the three through holes and both ends thereof are thermally melted so that the three members are joined. good. Further, 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 central plate 12, and the three contact surfaces are partially bonded by heat welding or the like. It is also possible to perform a three-way combination.

  With this assembly, as shown in FIG. 12, the left opening of the through hole 12 b of the central plate 12 is closed by the right surface of the left plate 11, and the right opening of the through hole 12 b of the central plate 12 is the left surface of the right plate 13. It is blocked by. Further, the intake port forming member 13 d attached to 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, as shown in FIG. 11, the upper part of the left opening of the arc groove 13 b of the right plate 13 is closed by the right surface portion of the central plate 12 where the through hole 12 b does not exist. Furthermore, as shown in FIG. 10, the left opening of the outlet recess 13 c of the right plate 13 is closed by the right surface portion of the central plate 12 where the through hole 12 b 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 FIG. 11 and FIG. 12) 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 in left view. In this storage chamber 14, a part of the left plate 11 is the left side wall of the storage chamber 14, and a part of the right plate 13 is the right side wall of the storage chamber 14 (the “storage” in the claims) Corresponding to the side wall of the 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. 11) is formed. As can be seen from FIG. 11, the starting point of the guide groove 13b is located immediately 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. 10 to 12) directed upward is formed, and an intake port 15a (see FIG. 11) serving as an inlet is formed at the rear end of the supply passage 15. As can be seen from FIG. 11, the end point (tip) of the supply passage 15 is located immediately above the + mark in FIG. The stopper bar 13e is disposed laterally from the front end to the front side of the supply passage 15.

  Further, on the upper surface of the case 10, an outlet 16 (FIG. 10) having an upper surface opening for taking out the component EC1 which has moved in the supply passage 15 and stopped by contacting the rear surface of the stopper bar 13e from the supply passage 15. To FIG. 12). As can be seen from FIG. 11, the outlet 16 is located immediately above the + mark in the figure.

  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. 9A to 9C and FIG. 11). 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. A guide groove 13b, a supply passage 15, an intake port 15a, an outlet port 16, and two flat surfaces FP1 and FP2 are formed together with the storage chamber 14.

  As shown in FIG. 12, the support shaft 20 has a shaft main body 20a and a flange 20b provided at the left end of the shaft main 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. 12, the bearing 30 is composed of 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. 8A to 8C, 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 outer surface 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. 12, 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. Has been. Therefore, the one magnetic pole of each permanent magnet 40d that moves 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.

  In FIG. 9A to FIG. 9C, the radius of curvature of the condition (virtual circle VC (circular orbit)) is equal to or less than the curvature radius 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. 9A shows a 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”, and FIG. FIG. 9C 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. 8A is most preferable, and then the positional relationships of FIG. 8B and FIG. 8C are preferable. Even in the positional relationship of “radius = curvature radius of outer arc surface 13b1” or “curvature radius of circular orbit = curvature radius of outer arc surface 13b1”, components (EC1 to EC3) are accommodated in guide grooves 13b described later. It is possible to do with high probability.

  FIG. 11 shows that the radius of curvature of the virtual circle (not shown) surrounding the outside of the total eight permanent magnets 40d substantially coincides with the radius of curvature of the first arcuate surface 12b1, but the outer flat surface FP1 If the width is increased or the permanent magnet 40d having a small diameter is used, the virtual circle comes to be located inside the first arcuate surface 12b1, and if the permanent magnet 40d having a large diameter is used, The virtual circle is located outside the first arc 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. 13 to FIG. 21, operations related to the component supply of the bulk feeder to which the component EC1 shown in FIG. 1A is supplied are shown in FIG. 1B and FIG. 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. 13 to 21 indicates the rotation center of the rotor 40.

  When supplying the components, as shown in FIG. 13, 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. 13, the rotor 40 is rotated several times in the direction of the broken line arrow by the rotor drive mechanism, so that the preliminary supply of the component EC1 (so-called so-called stuffing) is performed. )I do.

  As shown in FIG. 13, the rotation of the rotor 40 causes each permanent magnet 40 d to move in a state where one magnetic pole of the permanent magnet 40 d faces the storage chamber 14 and faces the guide groove 13 b (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. 14, the mass of the plurality of parts 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. 15) and the direction of 90 degrees different from the length direction (see FIG. 16), and the component EC1 that is not accommodated in the guide groove 13b is in a loose state (see FIG. 14).

  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 there is “the component EC1 accommodated in the guide groove 13b in a direction different from the length direction by 90 degrees” on the rear side of 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 length-oriented component EC1 flowing into the intake port 15a from the guide groove 13b is drawn along the supply passage 15 while being attracted by the magnetic force of the permanent magnet 40d as shown in FIG. 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 surface 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 stopped by contacting the rear surface of the stopper bar 13e. Become.

  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. 18 and 19, the permanent magnet 40d is located at the position where one magnetic pole of the permanent magnet 40d passes 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 position where the one magnetic pole of the permanent magnet 40d has stopped after passing the right side of the outlet 16 is set as the standby position is that when the leading part EC1 is taken out from the outlet 16 to the outside, the part EC1 is removed from the permanent magnet 40d. This is to avoid being attracted by the magnetic force. The reason why the standby position is the position where the one magnetic pole of the rear permanent magnet 40d enters the right side of the supply passage 15 is that the plurality of parts EC1 fed into the supply passage 15 by the preliminary supply are in the supply passage 15 This is to prevent the inner circular arc surface 13b2 constituting 15 from slipping down and dropping from the intake port 15a.

  The standby position is a position where the stopper bar 13e can be magnetized by the magnetic force of the permanent magnet 40d (see FIGS. 18 and 19) that has stopped after passing through the right side of the outlet 16, and more specifically, past the right side of the outlet 16. The permanent magnet 40d stopped in this manner reaches the front end of the stopper bar 13e, and the stopper bar 13e can be magnetized by the magnetic force. That is, in the standby position, the magnetic force based on the one magnetic pole of the stopped permanent magnet 40d reaches the front end of the stopper bar 13e, the stopper bar 13e is magnetized, and the one magnetic pole is formed at the rear end of the magnetized stopper bar 13e. The leading component EC1 abutting against the rear surface of the stopper bar 13e is attracted by the magnetic force based on the polarity, and the position and orientation of the leading component EC1 are maintained by the attraction.

  Since the magnetic force (attraction force) generated at the rear end of the stopper bar 13e is obtained by magnetizing the stopper bar 13e by the magnetic force of the permanent magnet 40d, it is much smaller than the surface magnetic force of the permanent magnet 40d. In other words, the magnetic force generated at the rear end of the stopper bar 13e is weak enough to maintain the leading part EC1 in contact with the rear surface of the stopper bar 13e in a contact state, for example, about several gauss to several tens of gauss. Then, the position and posture can be sufficiently maintained.

  Further, when the stopper bar 13e is magnetized by the magnetic force of the permanent magnet 40d stopped at the standby position, the adjustment of the magnetic force generated at the rear end of the stopper bar 13e (adjustment of the attractive force) can be performed by changing the standby position. Specifically, the center of the one magnetic pole of the permanent magnet 40d (see FIG. 19) stopped at the reference and the standby position is based on the center of the one magnetic pole of the permanent magnet 40d (see FIG. 17) located on the right side of the outlet 16. Is performed by changing the angle difference θ (see FIG. 18). For example, if the attractive force is too strong at the standby position shown in FIG. 19, the standby position may be shifted forward as shown in FIG. 20 so that the permanent magnet 40d is separated from the stopper bar 13e. If the attractive force is too weak at the standby position shown in FIG. 19, the standby position may be shifted rearward as shown in FIG. 21 so that the permanent magnet 40d approaches the stopper bar 13e. Incidentally, “when the suction force is too strong” means a case where the suction force of the leading component EC1 with respect to the rear surface of the stopper bar 13e hinders removal of the component EC1, and “when the suction force is too weak”. It means a case where the position and posture of the leading component EC1 cannot be sufficiently held by magnetic force.

  If a permanent magnet stopper having the same size as that of the stopper bar 13e is used instead of the stopper bar 13e, the position and posture of the leading component EC1 can be held by magnetic force. Compared with the case where the rod 13e is used, the cost of parts increases. Further, since the permanent magnet stopper has an inherent surface magnetic force, the magnetic force adjustment (adsorption force adjustment) cannot be performed as described above. In other words, in order to eliminate such a problem, a method is adopted in which the stopper bar 13e is magnetized by the magnetic force of the permanent magnet 40d stopped at the standby position.

  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. Further, since the suction force of the leading component EC1 with respect to the rear surface of the magnetized stopper bar 13e is adjusted so as not to hinder the removal of the component EC1, the leading component EC1 can be satisfactorily removed by the suction nozzle.

  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) The bulk feeder described above attracts and sucks a plurality of components (EC1 to EC3) among the loose components EC1 stored in the storage chamber 14 in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d. A function of accommodating one or a plurality of parts (EC1 to EC3) in the guide groove 13b in the length direction by moving the plurality of parts (EC1 to EC3) upward along the guide groove 13b. Taking in one or a plurality of parts (EC1 to EC3) housed in the length direction in the guide groove 13b by moving upward along the guide groove 13b while attracting them by the magnetic force of the permanent magnet 40d The function of feeding into the supply passage 15 through the opening 15a and the length-oriented components (EC1 to EC3) fed into the supply passage 15 are attracted by the magnetic force of the permanent magnet 40d. By moving upward along the supply passage 15, the leading parts (EC1 to EC3) in the supply passage 15 are brought into contact with the rear end of the stopper bar 13e and stopped so that they can be taken out from the outlet 16 in the upper surface opening. It has the function to do.

  That is, the supply passage 15 is provided from the upper end of the guide groove 13b toward the upper side of the storage chamber 14, and the outlet 16 of the upper surface opening is provided at the tip of the supply passage 15. The length is much shorter than conventional bulk feeders. Further, since the components (EC1 to EC3) in the length direction fed into the supply passage 15 move upward along the supply passage 15 while being attracted by the magnetic force of the permanent magnet 40d, the components (EC1 to EC3) In such a case, the component (EC1 to EC3) is surely moved upward even if the weight per component (EC1 to EC3) is light. Can do. Thereby, since the efficiency with which the parts (EC1 to EC3) are supplied to the outlet 16 in the length direction can be increased, even if the time interval at which the parts (EC1 to EC3) are taken out from the outlet 16 is shortened, For example, even if it is 50 msec or less, the supply capability sufficiently corresponding to the time interval can be exhibited.

  (2) The above-described bulk feeder uses a stopper bar 13e that can be magnetized by the magnetic force of the permanent magnet 40d, and the rotor 40 stops with one magnetic pole of the permanent magnet 40d passing the right side of the outlet 16. In this standby position, the stopper bar 13e is magnetized by the magnetic force of the stopped permanent magnet 40d, and the stopper bar 13e is magnetized by the magnetized stopper bar 13e. The leading parts (EC1 to EC3) that are in contact with the head have a function of being sucked.

  That is, at the standby position, the leading parts (EC1 to EC3) that are in contact with the stopper bar 13e are attracted by the magnetic force of the magnetized stopper bar 13e, and the positions of the leading parts (EC1 to EC3) are absorbed. In addition, since the posture can be maintained, even if the time interval at which the parts (EC1 to EC3) are taken out from the takeout port 16 becomes short, the work of taking out the first part (EC1 to EC3) from the takeout port 16 to the outside is good. Can be done.

  (3) Since the above-described bulk feeder magnetizes the stopper bar 13e by the magnetic force of the permanent magnet 40d stopped at the standby position, the magnetic force (attraction force) generated at the rear end of the stopper bar 13e by changing the standby position. ) Can be adjusted to an appropriate level.

  That is, if a stopper made of a permanent magnet having the same size as the stopper bar 13e is used instead of the stopper bar 13e, the position and posture of the leading component (EC1 to EC3) can be maintained by magnetic force. When the stopper is used, the cost of parts increases as compared with the case where the stopper bar 13e is used. Further, since the permanent magnet stopper has a unique surface magnetic force, the magnetic force adjustment (adsorption force adjustment) cannot be performed as described above. In other words, in order to eliminate such a problem, a method is adopted in which the stopper bar 13e is magnetized by the magnetic force of the permanent magnet 40d stopped at the standby position.

  (4) In the aforementioned bulk feeder, the stopper bar 13e is formed in a columnar shape or a quadrangular prism shape, and is disposed sideways so that the leading parts (EC1 to EC3) are in contact with the rear surface thereof. Is a position where the magnetic force of the stopped permanent magnet 40d reaches the front end of the stopper bar 13e.

  That is, in the standby position, the magnetic force based on the one magnetic pole of the stopped permanent magnet 40d reaches the front end of the stopper bar 13e, and the stopper bar 13e is magnetized. The same polarity appears. In short, the stopper bar 13e can be accurately magnetized by the magnetic force of the permanent magnet 40d stopped at the standby position, and the magnetic force (adsorption force) for maintaining the position and posture of the leading component EC1 is applied to the stopper bar 13e. Can be reliably generated on the rear surface.

  (5) In the bulk feeder 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 sandwiched between the outside and inside of the guide groove 13b. In this way, the two flat surfaces FP1 and FP2 exist in a flush state.

  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, in combination with the fact that as many components (EC1 to EC3) as possible are attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d, a plurality of components 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 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 further increased.

  (6) In the above bulk feeder, 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 13 The left side opening of the circular arc groove 13b is formed by a closed portion.

  That is, since the guide groove 13b and the supply passage 15 can be formed 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.

  (7) In the bulk feeder described above, the arc groove 13b of the right plate 13 is formed from directly below the position corresponding to the rotation center of the rotor 40, and the take-out port 16 is formed on the rotor 40. It is located directly above the position corresponding to the center of rotation.

  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 length of the supply passage 15 is made as short as possible, and the case 10, and thus the bulk feeder itself, is made compact. Can do.

  (8) In the above bulk feeder, 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 to FIG. 4). (See FIG. 4D).

  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.

  (9) In the bulk feeder 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 radius of curvature of the outer arcuate surface 13b1 constituting the guide groove 13b and the supply passage 15. Below, it is set more than the curvature radius of inner side arc surface 13b2.

  That is, by setting the conditions, 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 to 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.

  (10) In the bulk feeder described above, the annular portion 40c of the rotor 40 has a total of eight permanent magnets 40d, each of which has one magnetic pole concentric with the center of the cylindrical portion 40a (corresponding to the rotation center of the rotor 40). It arrange | positions at 45 degree intervals so that VC (equivalent to a circular track mentioned later) may be followed.

  That is, since the plurality of permanent magnets 40d are arranged at equiangular intervals, the rotor 40 at 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 stopper bar and its mounting structure]
The cylindrical or quadrangular prism-shaped stopper bar 13e has a diameter R4 (see FIG. 5A) or a width W4 and a height H4 (see FIG. 5B) corresponding to the cross-sectional shape of the linear groove GR. However, the diameter R4 or the width W4 and the height H4 of the stopper rod GR may be changed according to the shape of the parts (EC1 to EC3) to be supplied.

  (1) FIGS. 22 (A) and 22 (B) show an example of a stopper bar 13e1 and its mounting structure suitable for the case where parts EC1 and EC3 are to be supplied. When a cylindrical rod (see FIG. 5A) is used as the stopper bar 13e1, the diameter R4 of the stopper bar 13e1 coincides with the width W1 or height H1 of the part EC1 or the diameter R3 of the part EC3. . In addition, when a quadrangular prism shape (see FIG. 5B) is used as the stopper bar 13e1, the width W4 and the height H4 of the stopper bar 13e1 are the width W1 or the height H1 of the part EC1, or the part EC3. Is equal to the diameter R3.

  Further, a linear groove GR1 having “a rear part having the same cross-sectional shape as the arc groove 13b” and “a front part having a smaller cross-sectional shape than the arc groove 13b” in order from the uppermost point of the arc groove 13b is provided. ing. The three surfaces that define the width and depth of the “rear portion having the same cross-sectional shape as the arc groove 13b” of the linear groove GR1 are continuous with the three surfaces that define the width Wg and the depth Dg of the arc groove 13b. . On the other hand, two surfaces excluding one surface (upper surface in the drawing) that defines the width of the three surfaces that define the width and depth of the "front portion having a smaller cross-sectional shape than the circular arc groove 13b" of the linear groove GR1, It is continuous with two surfaces excluding one surface (upper surface in the drawing) that defines the width among the three surfaces that define the width and depth of the “back portion having the same cross-sectional shape as the arc groove 13b”. Further, the “rear portion having the same cross-sectional shape as the circular arc groove 13b” of the linear groove GR1 is opened upward through the outlet recess 13c, and the rear portion of the stopper bar 13e1 protrudes toward the outlet recess 13c. And is exposed through the outlet recess 13c.

  In this mounting structure, as shown in FIGS. 22A and 22B, the center of the front surface of the leading parts EC1 and EC3 contacting the rear surface of the stopper bar 13e1 is the center of the rear surface. They are arranged to match. In other words, when the front surfaces of the leading parts EC1 and EC3 come into contact with the rear surface of the stopper bar 13e1, the centers of the front surfaces of the leading parts EC1 and EC3 coincide with the center of the rear surface of the stopper bar 13e1.

  Since the center of the rear surface of the magnetized stopper bar 13e1 corresponds to the magnetic force center where the magnetic lines of force are most dense, it is possible to prevent the leading parts EC1 and EC3 contacting the rear surface of the stopper bar 13e1 from being displaced due to the magnetic force. At the same time, the positions and postures of the leading components EC1 and EC3 based on the magnetic attraction can be accurately maintained.

  22A and 22B show a stopper bar 13e1 having a flat surface at the rear end, but as shown in FIG. 23, a stopper bar 13e1 ′ having a curved surface such as a hemispherical surface at the rear end. May be used instead of the stopper bar 13e1. The same effect as described above can be obtained by making the curved surface vertex of the rear end of the stopper bar 13e1 'the magnetic force center and matching the curved surface vertex with the center of the front surface of the leading parts EC1 and EC3. be able to. In this case, the contact between the stopper bar 13e1 ′ and the leading parts EC1 and EC3 is point contact or close to this, so that the leading parts EC1 and EC3 when the leading parts EC1 and EC3 are taken out by the suction nozzle are used. In addition, an advantage that the contact resistance between EC3 and the stopper rod 13e1 ′ can be reduced is also obtained.

  Of course, even if the bulk feeder uses the stopper bar and its mounting structure shown in FIGS. 22 (A), 22 (B), and 23 instead of the stopper bar 13e and its mounting structure, the same supply as above. The operation can be realized and the same effect as described above can be obtained.

  (2) FIGS. 24 (A) and 24 (B) show an example of a stopper bar 13e2 suitable for the case where the component EC2 is to be supplied and its mounting structure. When a cylindrical rod (see FIG. 5A) is used as the stopper bar 13e2, the diameter R4 of the stopper bar 13e2 coincides with the height H2 of the component EC2. Further, when the stopper rod 13e2 having a quadrangular prism shape (see FIG. 5B) is used, the width W4 and the height H4 of the stopper rod 13e2 coincide with the height H2 of the component EC2.

  Further, a linear groove GR2 having “a rear part having the same cross-sectional shape as the arc groove 13b” and “a front part having a smaller cross-sectional shape than the arc groove 13b” in order from the uppermost point of the arc groove 13b is provided. ing. The three surfaces that define the width and depth of the “rear portion having the same cross-sectional shape as the arc groove 13b” of the linear groove GR2 are continuous with the three surfaces that define the width Wg and the depth Dg of the arc groove 13b. . On the other hand, one of the three surfaces that defines the width and depth of the “front portion having a smaller cross-sectional shape than the circular arc groove 13b” of the linear groove GR2 (the upper surface in the drawing) and the depth are defined. One surface excluding one surface has the same depth as one surface (upper surface in the drawing) that defines the width of the three surfaces that define the width and depth of the “back portion having the same cross-sectional shape as the circular arc groove 13b”. It is continuous with one surface excluding one specified surface. Furthermore, the “rear portion having the same cross-sectional shape as the circular arc groove 13b” of the linear groove GR2 is opened upward through the outlet recess 13c, and the rear portion of the stopper bar 13e2 protrudes toward the outlet recess 13c. And is exposed through the outlet recess 13c.

  In this mounting structure, as shown in FIGS. 24A and 24B, the stopper bar 13e2 has the center of the front surface of the leading component EC2 that contacts the rear surface thereof coincides with the center of the rear surface. Are arranged as follows. In other words, when the front surface of the leading part EC2 comes into contact with the rear surface of the stopper bar 13e2, the center of the front surface of the leading part EC2 coincides with the center of the rear surface of the stopper bar 13e2.

  Since the center of the rear surface of the magnetized stopper bar 13e2 corresponds to the magnetic force center where the magnetic field lines are most densely packed, it is possible to prevent the leading component EC2 contacting the rear surface of the stopper bar 13e2 from being displaced due to the magnetic force, It is possible to accurately hold the position and posture of the leading component EC2 based on magnetic attraction.

  23A and 23B show a stopper bar 13e2 having a flat surface at the rear end, but as shown in FIG. 25, a stopper bar 13e2 ′ having a curved surface such as a hemispherical surface at the rear end. May be used instead of the stopper bar 13e2. If the curved surface vertex at the rear end of the stopper bar 13e2 ′ is the center of magnetic force, and the curved surface vertex and the center of the front surface of the leading component EC2 are aligned, the same effect as described above can be obtained. it can. In this case, since the contact between the stopper bar 13e2 ′ and the leading part EC2 is in point contact or close to this, the leading part EC2 and the stopper bar 13e2 when the leading part EC2 is taken out by the suction nozzle. There is also an advantage that the contact resistance can be reduced.

  Needless to say, even if the bulk feeder uses the stopper bar and its mounting structure shown in FIGS. 24 (A), 24 (B) and 25 instead of the stopper bar 13e and its mounting structure, the same supply as described above. The operation can be realized and the same effect as described above can be obtained.

[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. 26, FIG. 27 (A) and FIG. 27 (B) is configured by combining the left plate 11-1 and the right plate 13-1, and the intake port forming member. Does not have 13d.

  As shown in FIG. 27 (A), the left plate 11-1 has a predetermined rectangular thickness when viewed from the left, 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. 27 (B), the right plate 13-1 has the same left side view outline as the left plate 11-1 and 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). . The 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 drawing to the top. Further, the arc groove 13b and the linear grooves GR, GR1, or GR3 are provided on the front side from the uppermost point of the arc groove 13b. 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 out a part of the upper surface of the right plate 13-1, specifically, the uppermost point of the arc groove 13b and the upper side of the front and rear portions thereof in the left-right direction. And a predetermined depth reaching the straight groove (GR, GR1 or GR2). That is, the uppermost point and the rear portion of the arc groove 13b and the rear end and the front portion of the linear groove (GR, GR1, or GR2) are partially opened upward through the outlet recess 13c.

  Further, the cylindrical or quadrangular prism-shaped stopper rods 13e, 13e1, 13e1 ', 13e2 or 13e2' are press-fitted into the linear grooves (GR, GR1 or GR2) formed on the front side from the uppermost point of the arc groove 13b. Or it is attached by gluing. Since the stopper rods 13e, 13e1, 13e1 ', 13e2 and 13e2' and their mounting structures are the same as those described above, description thereof is omitted here.

  To assemble the case 10-1 shown in FIG. 26, the left side of the right plate 13-1 shown in FIG. 27B 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. You just have to combine them

  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 both contact surfaces are partially adhered by heat welding or the like. You may make it combine.

  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 outline when viewed from the left (see FIG. 26). In this storage chamber 14, the left inner surface 11b5 of the left plate 11-1 is the left side wall of the storage chamber 14, and a part of the right plate 13-1 is the right side wall of the storage chamber (in the claims) It corresponds to the “side wall of the storage room”.

  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. The stopper bar is disposed laterally from the front end of the supply passage 15 to the front side.

  Further, on the upper surface of the case 10-1, as in the case 10, the parts (EC1 to EC3) that have moved in the supply passage 15 and stopped by coming into contact with the rear surface of the stopper bar are brought out of the supply passage 15 to the outside. An outlet 16 having an upper surface opening for taking out 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) In the case 10 and the case 10-1, the first arcuate surfaces 12b1 and 11b1 constituting the respective storage chambers 14 form a right angle with 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. 28A 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. 28B corresponds to the case 10-1, and the cross section of the first arcuate 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 enlarged 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.

  FIG. 28A and FIG. 28B show the first arcuate surfaces 12b1 ′ 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. 28A 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. 29A has a total of 16 permanent magnets 40d at intervals of 22.5 degrees. Further, the rotor 40-2 shown in FIG. 29B 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.

  A rotor 40-3 shown in FIG. 30 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, GR, GR1, GR2 ... Straight groove, 13e, 13e1, 13e1 ', 13e2, 13e2' ... stopper rod, 14 ... storage chamber, 15 ... supply passage, 15a ... intake port, 16 ... take-out port, 40, 40-1, 40-2, 40 -3 ... rotor, 40d, 40d '... permanent magnet, VC ... circular orbit (virtual circle), EC1-EC3 ... parts.

Claims (9)

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 stopper rod provided at the tip of the supply passage and in contact with a predetermined-oriented component moving in the supply passage;
A top opening opening for taking out the parts stopped by contacting the stopper bar from the supply passage;
A stopper bar that can be magnetized by the magnetic force of a permanent magnet is used, and the rotor has a position where one magnetic pole of the permanent magnet stops after passing outside the take-out port as a standby position for picking up parts. In the standby position, the stopper bar is magnetized by the magnetic force of the stopped permanent magnet, and the components that are in contact with the stopper bar are attracted by the magnetic force of the magnetized stopper bar. The bulk feeder according to claim 1,
The stopper bar is arranged so that the component abuts on one end thereof, and the standby position is a position where the magnetic force of the stopped permanent magnet reaches the other end of the stopper bar. The bulk feeder according to claim 2,
The stopper bar is arranged so that the center of the part contacting the one end coincides with the center of the one end. The bulk feeder according to claim 1,
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 according to claim 5,
The arc groove is formed from directly under the position corresponding to the rotation center of the rotor to directly above, and the outlet is positioned directly above the position corresponding to the rotation center of the rotor. The bulk feeder according to claim 5,
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 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 8.
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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