JP2010159166A - Bulk feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bulk feeder capable of exhibiting capacity capable of supplying a part to an outlet at a short time interval. <P>SOLUTION: This bulk feeder has a case 10 having a storage chamber 14, a guide groove 13b, an inlet 15a, a supply passage 15 and the outlet 16, a rotor 40 having a plurality of permanent magnets 40d and a shutter 50 for opening-closing the outlet 16. A plurality of pressing parts 40c2 are arranged at an interval in the rotor 40, and a pressing target part 50c pressable by the pressing part 40c2 is arranged in a shutter 50. The shutter 50 opens the outlet 16 when the pressing target part 50c is pressed by the pressing part 40c2 of the rotor 40, and operates so as to block up the outlet 16 when pressing is released. <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 A top opening opening for moving the inside of the supply passage and taking out a component of a predetermined direction supplied to the tip thereof to the outside, and a shutter for closing or opening the outlet. The rotor is provided with a plurality of pressing portions spaced along a predetermined circular orbit, and the shutter is provided with a pressed portion that can be pressed by the pressing portion of the rotor, and the shutter has a pressed portion. When the pressing portion of the rotor is pressed in a predetermined direction, the outlet is opened, and when the pressing is released, the outlet is closed.

  This bulk feeder sucks a plurality of parts out of loose parts stored in the storage chamber in the direction of the guide groove by the magnetic force of the permanent magnet and moves the sucked parts upward along the guide groove. A function of accommodating one or a plurality of parts in the guide groove in a predetermined direction by moving them, and attracting one or a plurality of parts accommodated in the guide groove in a predetermined direction by the magnetic force of the permanent magnet A function of feeding upward along the guide groove into the supply passage through the intake port, and a part oriented in the predetermined direction fed into the supply passage along the supply passage while being attracted by the magnetic force of the permanent magnet By moving upward, the function of supplying the leading part to the outlet of the upper surface opening can be exhibited.

  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.

  The bulk feeder is provided with a shutter for closing or opening the outlet, and the shutter opens the outlet when the pressed portion is pressed in a predetermined direction by the pressing portion of the rotor. Also, it operates to close the outlet when the pressure is released.

  That is, when the part is supplied to the take-out port, the take-out port can be closed by the shutter, so that the posture of the leading part supplied to the take-out port is disturbed, for example, the leading part is supplied to the take-out port. Stabilize the attitude of the leading part supplied to the outlet by reliably preventing the leading part from tilting and the leading part from tilting due to the magnetic force of the permanent magnet that passes outside the outlet. Can be achieved. Thereby, even if the time interval at which the parts are taken out from the outlet becomes short, the work of taking out the leading part from the outlet can be performed well.

  In addition, since the shutter is made to perform the desired opening / closing operation by the pressing portion provided on the rotor, it is not necessary to provide a dedicated mechanism for the opening / closing operation, and the outlet can be closed or opened with a simple configuration. It can be carried out. In other words, in order to avoid the complexity of the configuration, a method is adopted in which a pressing portion is provided in the rotor provided with the permanent magnet and the shutter is opened and closed by the pressing portion.

  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 by the bulk feeder shown in FIGS. 2A to 2C, and FIGS. 1B and 1C 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. FIG. 4 is a partially enlarged top view of the center plate shown in FIG. 5A 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. 5B to 5D are arcs shown in FIG. 5A. It is a partial expanded sectional view of the right board which shows the modification of a slot. 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. 5A, 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 shown to (B)-FIG.5 (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 an enlarged top view of the shutter shown in FIGS. 2 (A) to 2 (C). FIG. 11 is a partially enlarged top view of the bulk feeder shown in FIGS. 2 (A) to 2 (C). FIG. 12 is a cross-sectional view taken along line S1-S1 of FIG. FIG. 13 is a cross-sectional view taken along line S2-S2 of FIG. 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 a partially enlarged top view corresponding to FIG. 18 showing a first modification of the shutter. FIG. 22 is a diagram for explaining the operation of the shutter shown in FIG. FIG. 23 is a partially enlarged top view corresponding to FIG. 18 showing a second modification of the shutter. FIG. 24 is an explanatory diagram of the operation of the shutter shown in FIG. FIG. 25 is a partially enlarged top view corresponding to FIG. 18 showing a third modification of the shutter. FIG. 26 is a diagram for explaining the operation of the shutter shown in FIG. FIG. 27 is a partially enlarged top view corresponding to FIG. 11 and showing a fourth modification of the shutter. FIG. 28A is a partially enlarged top view of the shutter showing a fifth modified example of the shutter, and FIG. 28B is a cross-sectional view taken along line S4-S4 of FIG. 29 (A) and 29 (B) are left side views corresponding to FIG. 8 (A) showing a first modification of the rotor. 30A is a left side view corresponding to FIG. 8A showing a second modification of the rotor, FIG. 30B is a top view thereof, and FIG. 30C is S5-S5 in FIG. 30A. It is sectional drawing which follows a line. 31 (A) and 31 (B) are left side views corresponding to FIG. 8 (A) showing a third modification of the rotor. FIG. 32 is a left side view corresponding to FIG. 8A showing a fourth modification of the rotor. FIG. 33 is a cross-sectional view corresponding to FIG. 13 showing a first modification of the case. FIG. 34A is a right side view of the left plate constituting the case shown in FIG. 33, and FIG. 34B is a left side view of the right plate. FIG. 35A is a left side view corresponding to FIG. 3C showing a second modification of the case, and FIG. 35B is a left side view corresponding to FIG. 34B showing a third modification of the case. is there. 36A is a cross-sectional view corresponding to FIG. 13 illustrating a fourth modification of the case, and FIG. 36B is a cross-sectional view corresponding to FIG. 33 illustrating a fifth modification of the case.

  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 FIG. 2A to FIG. 13, the structure of the bulk feeder to which the component EC1 shown in FIG. 1A is supplied is shown in FIG. 1B and FIG. 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 13 indicates the rotation center of the rotor 40 described later or a position corresponding to this.

  As shown in FIGS. 2A to 2C, the bulk feeder includes a case 10, a support shaft 20, a bearing 30, a rotor 40, a shutter 50, a rotor drive mechanism (not shown), It has.

  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 center plate 12 has screw holes 12a at four corners, a through hole 12b in the left-right direction at a substantially center, and a shutter recess 12c at the center of the upper surface.

  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 a U-shaped recess 12b4 formed between the two. 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. 12).

  As shown in FIG. 4, the shutter recess 12c is formed by cutting out a part of the upper surface of the central plate 12 in the left-right direction, and the depth thereof coincides with the depth of the post-exit recess 13c. ing. A spring support wall 12c1 is provided on the left side of the front portion of the shutter recess 12c, and a screw hole 12c2 is provided on the rear side of the bottom surface.

  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 The screw hole 13f is provided at the center of the right surface, and the shutter recess 13g is provided at the front side of the upper surface.

  The arc groove 13b has a curvature center smaller than that of the outer arc surface 13b1 (see FIG. 5A), the outer arc surface 13b1 (see FIG. 5A) having the center of curvature at the + mark in the figure and having a predetermined radius of curvature, and The outer arc surface 13b1 and the inner arc surface 13b2 (see FIG. 5A) whose center of curvature coincides with each other. 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. 5 (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 (no reference) having the same cross-sectional shape as 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 Wg and the arc groove 13b. It is provided so as to be continuous with the three surfaces that define the depth Dg.

  Further, as shown in FIG. 5A, 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. 5A can accommodate the component EC1 so as to be movable in the 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. 5B to 5D 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. 5B is slightly larger than the end face diagonal dimension D1 of the component EC1 shown in FIG. 1A, and has a width Wg and a depth smaller than the length L1. A rectangle having a length Dg. That is, the arc groove 13b shown in FIG. 5B 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, as indicated by the broken line in FIG. 5C has a width Wg slightly larger than the height H2 of the component EC2 shown in FIG. 1B and smaller than the width W2, and a width It is a rectangle having a depth Dg slightly larger than W2. That is, the circular arc groove 13b shown in FIG. 5C 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 the drawing. Furthermore, the cross-sectional shape of the circular arc groove 13b shown in FIG. 5D is slightly larger than the diameter R3 of the component EC3 shown in FIG. 1C, and has a width Wg and a depth smaller than the length L3. A rectangle having Dg. That is, the arc groove 13b shown in FIG. 5D 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 arc groove 13b and the straight groove. 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 are partially opened upward through the outlet recess 13c.

  As shown in FIGS. 3C and 6, the shutter recess 13g is formed by cutting out a part of the upper surface of the right plate 13, specifically, a front side portion of the outlet recess 13c in the left-right direction. It is formed, and the depth thereof matches the depth of the outlet recess 13c.

  Further, as shown in FIG. 3C, 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. 5 (A) is replaced with the arc groove 13b shown in FIGS. 5 (B) to 5 (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, as shown in FIGS. 3C and 6, the straight groove on the left surface of the right plate 13 has a stopper bar 13 e that is formed in a columnar or quadrangular prism shape and is made of metal or plastic. It is attached by press fitting or gluing. As described above, the rear end and the front portion of the straight groove are partially opened upward through the outlet recess 13c, so that the straight groove is attached to the straight groove as shown in FIG. The rear part of the 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. 5 (A) is replaced with the arc groove 13b shown in FIGS. 5 (B) to 5 (D), the uppermost point of each arc groove 13b. If a similar straight groove is formed on the front side from the front, a post-drawing port 16 can be formed by attaching a stopper bar 13e to the straight groove.

  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.

  As shown in FIG. 13, 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, as shown in FIG. 12, the intake port forming member 13 d attached to the right plate 13 is fitted into the U-shaped recess 12 b 4 of the through hole 12 b of the center plate 12. Furthermore, as shown in FIG. 12, 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 where the through hole 12 b of the center plate 12 does not exist.

  That is, in the case 10, the first arc surface 12b1, the second arc surface 12b2, and the flat surface 12b3 of the through hole 12b, the arc surface 13d1 and the rear surface and the lower surface of the narrow portion 13d2 of the intake port forming member 13d, A storage chamber 14 (see FIGS. 12 and 13) is defined which is surrounded by a part of the right surface of the plate 11 and a part of the left surface of the right plate 13 and has a substantially circular outline when viewed from the left. 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. 12) is formed. As can be seen from FIG. 12, 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. 11 to 13) heading upward is formed, and an intake port 15 a (see FIG. 12) serving as an inlet is formed at the rear end of the supply passage 15. As can be seen from FIG. 12, the end point (tip) of the supply passage 15 is located immediately above the + mark in the figure. 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. 11) having an upper surface opening for taking out the component EC1 that has moved through the supply passage 15 and stopped against the rear surface of the stopper bar 13e from the supply passage 15 is removed. To 13) are formed. As can be seen from FIG. 12, the outlet 16 is located immediately above the + mark in the figure.

  Further, since the depth of the shutter recess 12c of the central plate 12 is the same as the depth of the outlet recess 13c and the shutter recess 13g of the right plate 13, these recesses 12c, 13c and 13g are one continuous. It becomes a recess.

  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. 12). 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. In addition, the angle range of the supply passage 15 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. 5 (A) is replaced with the arc groove 13b shown in FIGS. 5 (B) to 5 (D), the cross-sectional shape of each arc groove 13b. 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. 13, the support shaft 20 has a shaft body 20a and a flange 20b provided at the left end of the shaft body 20a, and is made of metal or plastic. The support shaft 20 is attached to the center of the right surface of the right plate 13 by inserting a set screw into a plurality of screw insertion holes (not shown) provided in the flange portion 20b and screwing it into the screw hole 13f on the right surface of the right plate 13. ing. In this attached state, the center of the shaft body 20a of the support shaft 20 coincides with the center of curvature of the outer arcuate surface 13b1 and the inner arcuate surface 13b2 constituting the guide groove 13b of the right plate 13.

  As shown in FIG. 13, the bearing 30 is formed 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.

  Further, a total of eight arc-shaped concave portions 40c1 are formed at the left outer peripheral edge of the annular portion 40c of the rotor 40 at intervals of 45 degrees along the left outer peripheral edge, and between the adjacent arc-shaped concave portions 40c1. A total of eight pressing portions 40c2 composed of portions protruding in a mountain shape toward the left side are formed at intervals of 45 degrees. As can be seen from FIG. 11, each pressing portion 40c2 includes two inclined surfaces that rise acutely from the end of the adjacent arcuate recess 40c1 toward the left side, and a plane that is flush with the left surface of the annular portion 40c. However, when viewed from above, the shape is a trapezoid having inclined surfaces on the front side and the rear side. In the drawing, the angular position of each pressing portion 40c2 when the annular portion 40c is viewed from the left is shown to coincide with the angular position of each permanent magnet 40d, but before and after the pressed portion 50c of the shutter 50 described later. The angular position of each pressing portion 40c2 may be shifted from the angular position of each permanent magnet 40d by several degrees in accordance with the direction position, the vertical position, and the like.

  As shown in FIG. 13, the rotor 40 has a permanent magnet 40d in detail so that the left surface of the annular portion 40c faces the right surface of the right plate 13 of the case in a parallel or close state with a slight gap. Each of the pressing portions 40c2 is slightly spaced from the outer surface of the right side wall of the storage chamber 14 so that one of the magnetic poles faces the outer surface of the right side wall of the storage chamber 14 in a parallel or close state. The inner hole 40a1 of the cylindrical portion 40a is fitted into the outer ring of the bearing 30 so as to face each other in a parallel state or a state close thereto. In this attached state, the rotor 40 can rotate around the shaft body 20a of the support shaft 30, and with this rotation, each permanent magnet 40d moves under a circular orbit corresponding to the virtual circle VC, and Each pressing portion 40c2 can also move along the circular orbit outside the circular orbit corresponding to the virtual circle VC.

  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.

  9A is the most preferable under the above conditions, and then the positional relationships of FIG. 9B and FIG. 9C are preferable. If the above conditions are satisfied, “the curvature of the circular orbit” 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. 12 shows that the radius of curvature of the virtual circle (not shown) surrounding the outside of the total of eight permanent magnets 40d substantially coincides with the radius of curvature of the first arc 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. 5A is replaced with the arc groove 13b shown in FIGS. 5B to 5D.

  As shown in FIG. 10, the shutter 50 includes an arm portion 50a having a rectangular top view contour, a supported portion 50b having a substantially circular top view contour provided at the rear end of the arm portion 50a, and an arm portion 50a. The pressed portion 50c having a substantially triangular top view provided on the right side of the front portion and the opening / closing portion 50d having a substantially rectangular top view contour provided on the right side of the intermediate portion of the arm portion 50a are provided with metal or It is made of plastic.

  The arm portion 50a has rigidity that is difficult to elastically deform by adjusting the left and right dimensions thereof. The tip of the pressed part 50c is rounded to reduce the contact resistance with the pressing part 40c2. Furthermore, the opening / closing part 50d is a part that directly closes or opens the outlet 16 and its front-rear dimension is slightly larger than the front-rear dimension of the outlet 16 and smaller than the front-rear dimension of the outlet recess 13c. Moreover, the left-right dimension is slightly larger than the left-right dimension of the outlet 16. Furthermore, a shaft support hole 50b1 for rotatably supporting the shutter 50 is provided in the supported portion 50b.

  The shutter 50 has a thickness equal to or smaller than the depth of the shutter recess 12c of the central plate 12, and the shutter 50 has a support shaft having a threaded portion at the lower end as shown in FIG. SS is inserted into the shaft support hole 50b1, and the screw portion is screwed into the screw hole 12c2 of the shutter recess 12c, and compressed between the front left side of the arm portion 50a and the spring support wall 12c1 of the shutter recess 12c. The spring 10 is disposed in the case 10 by interposing the spring SP.

  The shutter 50 disposed in the case 10 has the pressed portion 50c not pressed by the pressing portion 40c2 of the rotor 40 (see FIG. 11) on the right side of the arm portion 50a based on the biasing force of the compression spring SP. It is in contact with the upper left surface of the right plate 13. The tip of the pressed portion 50c protrudes into the arc-shaped recess 40c1 of the rotor 40 through the shutter recess 13g, and the opening / closing portion 50d enters the outlet recess 13c and closes the outlet 16. In other words, the shutter 50 is disposed in the case 10 in such a positional relationship that the pressed portion 50c can be pressed by each pressing portion 40c2 of the rotor 40, and the compression spring SP causes the pressed portion 50c of the rotatable shutter 50 to move. It is supported by its urging force.

  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. 14 to FIG. 20, operations related to 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. 14 to 20 indicates the rotation center of the rotor 40.

  When supplying the components, as shown in FIG. 14, a large number of components EC <b> 1 are stored in the storage chamber 14 of the case 10 in a loose state (a state where 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. 14, the rotor 40 is rotated several times in the direction of the broken line arrow (counterclockwise direction) by the rotor drive mechanism, so that the spare part EC1 is spared. Supply (so-called stuffing) is performed.

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

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

  Two flat surfaces FP1 and FP2 are present on the outer and inner sides of the guide groove 13b so as to sandwich the guide groove 13b, and the center of one magnetic pole of the permanent magnet 40d faces the guide groove 13b. Therefore, as shown in FIG. 15, the mass of the plurality of components EC1 attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d covers the guide groove 13b and the flat surfaces FP1 and FP2 on both sides thereof. It becomes a mountain-like form (refer to a two-dot chain line) or a form close to this. That is, as many parts EC1 as possible are sucked in the direction of the guide groove 13b using the flat surfaces FP1 and FP2 existing outside and inside the guide groove 13b. The number of the plurality of components EC1 attracted in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d depends on the remaining number of components EC1 in the storage chamber 14, the surface magnetic force of the permanent magnet 40d, and the like, but a sufficient amount of components EC1. Is housed in the storage chamber 14, and the permanent magnet 40d has a surface magnetic force of 2000 to 4000 gauss, and a sufficient magnetic force reaches the component EC1 in the storage chamber 14, the number is 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. 16), and the direction EC differs from the length direction by 90 degrees (see FIG. 17), and the component EC1 that is not accommodated in the guide groove 13b is in a loose state (see FIG. 15).

  When one or a plurality of components EC1 accommodated in the guide groove 13b is “component EC1 accommodated in the length direction in the guide groove 13b” or “in the length direction in the guide groove 13b” When the “component EC1 accommodated in the guide groove 13b in a direction different from the length direction by 90 degrees” exists 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. 16, “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 lengthwise component EC1 flowing into the intake port 15a from the guide groove 13b is attracted by the magnetic force of the permanent magnet 40d as shown in FIG. 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.

  When the rotor 40 rotates several times during the preliminary supply, the pressing of the pressed portion 50c of the shutter 50 by the pressing portion 40c2 of the rotor 40 and the release of the pressing are repeated. Specifically, when the pressed portion 50c of the shutter 50 rides on the pressing portion 40c2 of the rotor 40 and is pressed to the left by the pressing portion 40c2, the shutter 50 resists the urging force of the compression spring SP. Rotational displacement is made counterclockwise around the support hole 50b1, and the opening / closing portion 50d is retracted from the outlet 16 to the left along with the rotational displacement, thereby opening the outlet 16 (see FIG. 20). When the pressed portion 50c of the shutter 50 slides down from the pressing portion 40c2 of the rotor 40 and the pressing is released, the shutter 50 is rotationally displaced clockwise around the shaft support hole 50b1 by the urging force of the compression spring SP. In response to the rotational displacement, the opening / closing part 50d shifts to the right from the retracted position and is positioned on the outlet 16 to close the outlet 16 (see FIG. 18).

  As can be seen from FIG. 18, when the leading part EC1 stops in contact with the rear surface of the stopper bar 13e in the step (2), the outlet 16 is closed by the opening / closing part 50d of the shutter 50. The posture of the leading part EC1 supplied to 16 is disturbed, for example, tilting due to a reaction when the leading part EC1 is supplied to the outlet 16 (a reaction when contacting the rear surface of the stopper bar 13e), It is possible to reliably prevent the leading part EC1 from being inclined due to the influence of the magnetic force of the permanent magnet 40d passing through the right side of the outlet 16.

  After the preliminary supply of the component EC1 is completed, as shown in FIG. 19 and FIG. 20, the one magnetic pole of the permanent magnet 40d is in a position passing the right side of the outlet 16, and the permanent magnet 40d on the rear side is located. The rotor 40 is stopped so that one of the magnetic poles is located at a position where it enters the right side of the supply passage 15 and so that the pressing portion 40c2 of the rotor 40 is located at a position where the pressed portion 50c of the shutter 50 is pressed (hereinafter referred to as "the pressing portion 40c2"). This stop position is called 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.

  At this standby position, the pressed portion 50c of the shutter 50 rides on the pressing portion 40c2 of the rotor 40 and is pressed to the left by the pressing portion 40c2, so that the shutter 50 is attached with the compression spring SP. Against the force, it is rotationally displaced counterclockwise about the shaft support hole 50b1, and with this rotational displacement, the opening / closing part 50d is retracted from the outlet 16 to the left and the outlet 16 is opened. That is, the leading component EC1 existing at the outlet 16 can be taken out through the outlet 16.

  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 positioned at the uppermost point of the arcuate supply passage 15, even if a plurality of components EC are connected to the rear side of the leading component EC1 existing in the take-out port 16, the subsequent component EC1 Thus, no load, such as a pressing force, is generated that causes trouble in the removal of the leading component EC1.

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

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

  Further, in the process in which the rotor 40 at the standby position rotates by a predetermined angle in the counterclockwise direction, the pressed portion 50c of the shutter 50 slides down from the pressing portion 40c2 of the rotor 40 and the pressure is released. Due to the urging force of the compression spring SP, the shaft support hole 50b1 is rotated and displaced clockwise about the shaft support hole 50b1, and the opening / closing part 50d is shifted to the right from the retracted position and positioned on the outlet 16 along with the rotational displacement. Thus, the outlet 16 is closed (see FIG. 18).

  That is, when the component EC1 is supplied to the outlet 16 again, the outlet 16 is closed by the opening / closing part 50d of the shutter 50, so that the posture of the leading part EC1 supplied to the outlet 16 is disturbed, for example, A permanent magnet 40d that tilts due to a reaction when the leading part EC1 is supplied to the outlet 16 (a reaction when it comes into contact with the rear surface of the stopper bar 13e) or the leading part EC1 passes through the right side of the outlet 16 It is possible to reliably prevent tilting due to the magnetic force.

  Although not shown, even when the arc groove 13b shown in FIG. 5A is replaced with the arc groove 13b shown in FIGS. 5B to 5D, 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. 5 (A) is replaced with the guide groove 13b shown in FIG. 5 (B), the component EC1 has a length direction in which the surfaces of the width or height are not aligned (FIG. 5). (See the broken line (B)), but can be accommodated in the guide groove 13b. However, in the process of moving in the guide groove 13b and the process of moving in the supply passage 15, the component EC1 itself undergoes a displacement that stabilizes the 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 above-described bulk feeder moves a plurality of parts (EC1 to EC3) out of the parts (EC1 to EC3) stored in the storage chamber 14 in the direction of the guide groove 13b by the magnetic force of the permanent magnet 40d. By sucking and moving the sucked parts (EC1 to EC3) upward along the guide groove 13b, one or more parts (EC1 to EC3) are placed in the guide groove 13b in the length direction. The function of accommodating, and one or a plurality of components (EC1 to EC3) accommodated in the length direction in the guide groove 13b are moved upward along the guide groove 13b while being attracted by the magnetic force of the permanent magnet 40d. Thus, the function of feeding into the supply passage 15 through the intake port 15a and the length-oriented components (EC1 to EC3) fed into the supply passage 15 are caused by the magnetic force of the permanent magnet 40d. While suction Te can function to supply the top part of the (EC1~EC3) to outlet 16 of the top opening by moving upwardly along the supply path 15.

  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 aforementioned bulk feeder is provided with a shutter 50 for closing or opening the outlet 16, and the pressed portion 50 c of the shutter 50 is pressed to the left by the pressing portion 40 c 2 of the rotor 40. When the pressure is released, the outlet 16 is opened, and when the pressure is released, the outlet 16 is closed.

  That is, when the parts (EC1 to EC3) are supplied to the outlet 16, the outlet 16 can be closed by the shutter 50, so that the posture of the leading part (EC1 to EC3) supplied to the outlet 16 is changed. For example, the head component (EC1 to EC3) may be tilted due to a reaction when the leading part (EC1 to EC3) is supplied to the outlet 16 (a reaction when contacting the rear surface of the stopper bar 13e) or the leading part (EC1 to EC3). Is reliably prevented from tilting due to the magnetic force of the permanent magnet 40d passing through the right side of the outlet 16 and the posture of the leading parts (EC1 to EC3) supplied to the outlet 16 is stabilized. Can do. Thereby, even if the time interval at which the parts (EC1 to EC3) are taken out from the outlet 16 becomes short, the work of taking out the leading parts (EC1 to EC3) from the outlet 16 to the outside can be performed well.

  In addition, since the shutter 50 is provided with the desired opening / closing operation by the pressing portion 50c provided on the rotor 40, there is no need to provide a dedicated mechanism for the opening / closing operation, and the outlet 16 can be configured with a simple configuration. Occlusion or opening can be performed. In other words, in order to avoid complication of the configuration, a method is adopted in which a pressing portion 50c is provided in the rotor 40 provided with the permanent magnet 40d and the shutter 50 is opened and closed by the pressing portion 50c. .

  (3) In the bulk feeder described above, the rotor 40 has a position where one magnetic pole of the permanent magnet 40d stops after passing the outside of the take-out port 16 as a standby position for picking up parts, and the shutter 50 is in the standby position. The pressed portion 50c is pressed to the left by the pressing portion 40c2 of the rotor 40, and the outlet 16 is opened.

  That is, in the standby position, one magnetic pole of the permanent magnet 40d of the rotor 40 passes outside the outlet 16, so that the leading parts (EC1 to EC3) existing in the opened outlet 16 are the permanent magnets. It is possible to avoid the increase in the pick-up resistance by being attracted by the magnetic force of 40d, and to smoothly take out the leading components (EC1 to EC3) from the pick-up port 16.

  (4) In the bulk feeder described above, the plurality of pressing portions 40c2 provided on the rotor 40 are formed of ridged portions (specifically, trapezoidal portions having inclined surfaces on both sides). The pressing portion 50c has a rounded tip, and the pressed portion 50c rides on the pressing portion 40c2 of the rotor 40 and is pressed leftward.

  That is, when the shutter 50 is pressed against the pressed portion 50c and released, the pressed portion 50c rides on the pressing portion 40c2 via one inclined surface, and the pressing portion 40c2 passes through the other inclined surface. It is done under the behavior of sliding down. That is, combined with the fact that the tip of the pressed portion 50c has a rounded shape, the rotor 40 side and the shutter 50 side are worn or damaged even if the outlet 16 is repeatedly closed and opened. This can be avoided as much as possible, and the opening / closing operation of the shutter 40 can be performed stably and smoothly over a long period of time.

  In addition, when the pressing portion 40c2 has a trapezoidal shape, the pressed portion 50c can be pressed while the pressed portion 50c of the shutter 50 is in contact with the plane between the inclined surfaces. 16 can be stably opened, and the desired pressing can be accurately performed even if the stop position of the rotor 40 is slightly shifted.

  (5) In the above bulk feeder, a total of eight pressing portions 40c2 are provided on the rotor 40 at intervals of 45 degrees so as to follow a circular orbit corresponding to the virtual circle VC, and a total of eight permanent magnets 40d. Are provided on the rotor 40 at intervals of 45 degrees so that the centers of the one magnetic poles are located on a circular orbit corresponding to the virtual circle VC.

  That is, after the leading parts (EC1 to EC3) existing at the takeout port 16 are taken out, the operation of rotating the rotor 40 at the standby position by a predetermined angle in the counterclockwise direction and then stopping is performed, for example, 45 degrees, 90 degrees, The motor control circuit can easily control the operation of stopping by rotating 135 degrees or 180 degrees.

  (6) In the above bulk feeder, the shutter 50 has the pressed portion 50b on the arm portion 50a having rigidity that is difficult to be elastically deformed, and the pressed portion 50c is supported by the compression spring SP. Opens the outlet 16 by rotational displacement against the spring biasing force when the pressed portion 50c is pressed by the pressing portion 40c2 of the rotor 40, and by the spring biasing force when the pressing is released The return port 16 is closed by the return.

  That is, since the shutter 50 can be returned when the take-out port 16 is closed by using the urging force of the compression spring SP, the take-out port 16 can be blocked by the shutter 50 accurately and stably.

  (7) 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.

  (8) In the aforementioned 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, It is also easy to obtain the supply passage 15 continuously.

  (9) In the bulk feeder described above, the arc groove 13b of the right plate 13 is formed from directly below to a position directly above the position corresponding to the rotation center of the rotor 40. 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 directly below the position corresponding to the rotation center of the rotor 40, even when the remaining number of parts (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.

  (10) 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. 5A to FIG. 5). (See FIG. 5D).

  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.

  (11) In the bulk feeder described above, the radius of curvature of the circular orbit (corresponding to the virtual circle VC) where the center of one magnetic pole of each permanent magnet 40d is located is that of the outer arc surface 13b1 constituting the guide groove 13b and the supply passage 15. The curvature radius is set to be equal to or smaller than the curvature radius of the inner circular 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 condition, 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. 9A 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. 9B. 9C, it can be said that “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” is preferable. , 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) ) With high probability It is sufficiently possible.

[Modified shutters]
Next, a modified example of the shutter 50 will be described with reference to FIGS.

  (1) FIGS. 21 and 22 show a first modification of the shutter 50. As shown in FIG. 21, this modified example (shutter 51) has an arm 51a whose left-right dimension is smaller than that of the arm 50a, and a profile with a substantially circular top view provided at the rear end of the arm 51a. The supporting portion 51b, the pressed portion 51c having a substantially triangular top view provided on the front right side of the arm portion 51a, and the opening / closing portion 51d having a substantially rectangular top view contour provided on the right side of the intermediate portion of the arm portion 51a. And made of metal or plastic.

  The arm 51a can be deformed and restored based on elasticity by adjusting the left and right dimensions thereof. The tip of the pressed part 51c is rounded to reduce the contact resistance with the pressing part 40c2. Furthermore, the opening / closing part 51d is a part that directly closes or opens the outlet 16, and its front-rear dimension is slightly larger than the front-rear dimension of the outlet 16, and smaller than the front-rear dimension of the outlet recess 13c. Moreover, the left-right dimension is slightly larger than the left-right dimension of the outlet 16. Furthermore, a screw insertion hole 51b1 is provided in the supported portion 51b.

  The shutter 51 has a thickness equal to or smaller than the depth of the shutter recess 12c of the central plate 12, and the shutter 51 has a set screw FS inserted into a screw insertion hole 51b1 as shown in FIG. The screw portion is screwed into the screw hole 12c2 of the shutter concave portion 12c and the supported portion 51b is fixed, thereby being disposed in the case 10.

  The shutter 51 disposed in the case 10 is configured so that the right side of the arm portion 51a is based on the elasticity of the arm portion 51a when the pressed portion 51c is not pressed by the pressing portion 40c2 of the rotor 40 (see FIG. 21). It is in contact with the upper left surface of the right plate 13. Further, the tip of the pressed portion 51c protrudes into the arc-shaped recess 40c1 of the rotor 40 through the shutter recess 13g, and the opening / closing portion 51d enters the outlet recess 13c to close the outlet 16. That is, the shutter 51 is disposed in the case 10 under a positional relationship such that the pressed portion 51 c can be pressed by each pressing portion 40 c 2 of the rotor 40.

  When the rotor 40 is in the standby position, as shown in FIG. 22, the pressed portion 51c of the shutter 51 rides on the pressing portion 40c2 of the rotor 40 and is pressed to the left by the pressing portion 40c2. The base portion of the arm portion 51a is deformed so as to incline to the left against its elasticity, and the opening / closing portion 51d is retreated to the left from above the take-out port 16 and the take-out port 16 is opened. .

  Further, in the process in which the rotor 40 at the standby position rotates by a predetermined angle in the counterclockwise direction after taking out the parts, the pressed portion 51c of the shutter 51 slides down from the pressing portion 40c2 of the rotor 40 as shown in FIG. Since the pressing is released, the base part of the arm part 51a is restored by its elasticity and the arm part 51a is restored, and the opening / closing part 51d is shifted to the right from the retracted position along with the restoration, and is on the outlet 16. In position, the outlet 16 is closed.

  According to the shutter 51, the outlet 16 is opened by the deformation of the arm portion 51a when the pressed portion 51c is pressed by the pressing portion 40c2 of the rotor 40, and the arm portion when the pressing is released. The outlet 16 can be closed by restoring 51a. That is, since the return compression spring SP such as the shutter 50 is not necessary, there is an advantage that the number of parts can be reduced.

  Even a bulk feeder that uses the shutter 51 in place of the shutter 50 can realize the same supply operation as described above, and can obtain the same effect (except for the effect (6)).

  (2) FIGS. 23 and 24 show a second modification of the shutter 50. As shown in FIG. 23, this modified example (shutter 52) has an arm part 52a whose left-right dimension is smaller than that of the arm part 50a, and a top-view outline provided at the rear end of the arm part 52a. 1 Opened part 52b, pressed part 52c provided on the right side of the front part of the arm part 52a having a substantially triangular top view, and open / closed top part provided on the right side of the intermediate part of the arm part 52a having a substantially rectangular shape It has a portion 52d and a second supported portion 52e having a substantially circular top view profile provided at the front end of the arm portion 52a, and is made of metal or plastic.

  The arm portion 52a can be deformed and restored based on elasticity by adjusting its left and right dimensions. Furthermore, the tip of the pressed part 52c is rounded to reduce the contact resistance with the pressing part 40c2. Furthermore, the opening / closing part 52d is a part that directly closes or opens the outlet 16 and its front-rear dimension is slightly larger than the front-rear dimension of the outlet 16 and smaller than the front-rear dimension of the outlet recess 13c. Moreover, the left-right dimension is slightly larger than the left-right dimension of the outlet 16. Further, shaft support holes 52b1 and 52e1 are provided in the supported portions 52b and 52e.

  On the other hand, the shutter recess 12c 'is formed to have a larger front-rear dimension than the shutter recess 12c, and a screw hole 12c3 is provided on the front side of the bottom surface.

  The shutter 52 has a thickness equal to or smaller than the depth of the shutter recess 12c of the central plate 12, and the shutter 52 has a support shaft having a threaded portion at the lower end, as shown in FIG. The SS is disposed in the case 10 by inserting the SS into the respective shaft support holes 52b1 and 52e1 and screwing the respective screw portions into the screw holes 12c2 and 12c3 of the shutter recess 12c ′.

  The shutter 52 disposed in the case 10 is configured so that the right side of the arm portion 52a is based on the elasticity of the arm portion 52a when the pressed portion 52c is not pressed by the pressing portion 40c2 of the rotor 40 (see FIG. 23). It is in contact with the upper left surface of the right plate 13. Further, the tip of the pressed portion 52c protrudes into the arc-shaped recess 40c1 of the rotor 40 through the shutter recess 13g, and the opening / closing portion 52d enters the outlet recess 13c to close the outlet 16. That is, the shutter 52 is disposed in the case 10 under a positional relationship such that the pressed portion 52c can be pressed by each pressing portion 40c2 of the rotor 40.

  When the rotor 40 is in the standby position, as shown in FIG. 24, the pressed portion 52c of the shutter 52 rides on the pressing portion 40c2 of the rotor 40 and is pressed leftward by the pressing portion 40c2. The entire arm portion 52a is deformed so as to bend to the left against its elasticity, and the opening / closing portion 52d is retreated to the left from above the take-out port 16 and the take-out port 16 is opened.

  Further, in the process in which the rotor 40 at the standby position rotates by a predetermined angle in the counterclockwise direction after removing the parts, the pressed portion 52c of the shutter 52 slides down from the pressing portion 40c2 of the rotor 40 as shown in FIG. Since the pressing is released, the entire arm portion 52a is restored by its elasticity and the arm portion 52a is restored, and along with the restoration, the opening / closing portion 52d is shifted to the right from the retracted position and positioned on the outlet 16. Thus, the outlet 16 is closed.

  According to the shutter 52, the outlet 16 is opened by the deformation of the arm portion 52a when the pressed portion 52c is pressed by the pressing portion 40c2 of the rotor 40, and the arm portion when the pressing is released. The outlet 16 can be closed by restoring 52a. That is, since the return compression spring SP is not required unlike the shutter 50, there is an advantage that the number of parts can be reduced.

  Even a bulk feeder that uses the shutter 52 in place of the shutter 50 can achieve the same supply operation as described above, and can obtain the same effect (except for the effect (6)).

  (3) FIGS. 25 and 26 show a third modification of the shutter 50. As shown in FIG. 25, this modified example (shutter 53) includes an arm portion 53a having a J-shaped top view profile, a quadrangular columnar supported portion 53b provided at the left end of the arm portion 53a, and an arm portion. 53a includes a pressed portion 53c having a substantially triangular top view contour provided on the front right side of 53a, and an opening / closing portion 53d having a substantially rectangular top view contour provided on the right side of the intermediate portion of the arm portion 53a. It is made of metal or plastic.

  The arm part 53a has a substantially semicircular elastic part 53a1 between the arm part 53a and the supported part 53b. By adjusting the width of the elastic part 53a1, the arm part 53a can be deformed and restored based on elasticity. The tip of the pressed part 53c is rounded to reduce contact resistance with the pressing part 40c2. Furthermore, the opening / closing part 53d is a part that directly closes or opens the outlet 16 and its front-rear dimension is slightly larger than the front-rear dimension of the outlet 16 and smaller than the front-rear dimension of the outlet recess 13c. Moreover, the left-right dimension is slightly larger than the left-right dimension of the outlet 16. Further, the supported portion 51b has a portion (no symbol) extending forward from the left end of the pressed portion 53c and a portion (no symbol) extending rearward via a step (no symbol) on the left surface side.

  On the other hand, the shutter recess 12c ″ has a shape that closes the upper surface opening of the shutter recess 12c, and opens only on the right side. In other words, the depth of the shutter recess 12c ″ (up and down) The dimension) is smaller than the depth of the recess 12c for the shutter by the thickness of the wall closing the upper surface opening. Further, a support recess 12c2 ″ that is supported by fitting the supported portion 51b of the shutter 53 is provided on the inner left surface of the shutter recess 12c ″ instead of the screw hole 12c2.

  The shutter 53 has a thickness slightly smaller than the depth of the shutter recess 12c ″ of the central plate 12, and the shutter 53 has the right plate 13 attached to the central plate 12 as shown in FIG. By inserting the right plate 13 to the central plate 12 after inserting the supported portion 51b into the support recess 12c2 "after inserting the supported portion 51b into the support recess 12c2" through the right opening of the shutter recess 12c ". 10 is arranged.

  The shutter 53 disposed in the case 10 is configured so that the right side of the arm portion 53a is based on the elasticity of the elastic portion 53a1 when the pressed portion 53c is not pressed by the pressing portion 40c2 of the rotor 40 (see FIG. 25). It is in contact with the upper left surface of the right plate 13. Further, the tip of the pressed portion 53c protrudes into the arc-shaped recess 40c1 of the rotor 40 through the shutter recess 13g, and the opening / closing portion 53d enters the outlet recess 13c to close the outlet 16. That is, the shutter 53 is disposed in the case 10 under a positional relationship such that the pressed portion 53 c can be pressed by each pressing portion 40 c 2 of the rotor 40.

  When the rotor 40 is in the standby position, as shown in FIG. 26, the pressed portion 53c of the shutter 53 rides on the pressing portion 40c2 of the rotor 40 and is pressed leftward by the pressing portion 40c2. The elastic portion 53a1 of the arm portion 53a is deformed so as to bend inward against the elasticity, and the opening / closing portion 53d is retreated to the left from above the takeout port 16 and the takeout port 16 is opened.

  Further, in the process in which the rotor 40 at the standby position rotates by a predetermined angle in the counterclockwise direction after taking out the parts, the pressed portion 53c of the shutter 53 slides down from the pressing portion 40c2 of the rotor 40 as shown in FIG. Since the pressing is released, the elastic portion 53a1 of the arm portion 53a is restored by its elasticity and the arm portion 53a is restored, and along with the restoration, the opening / closing portion 52d is shifted to the right from the retracted position and is on the outlet 16 The outlet 16 is closed at this position.

  According to the shutter 53, the outlet 16 is opened by the deformation of the arm portion 53a when the pressed portion 53c is pressed by the pressing portion 40c2 of the rotor 40, and the arm portion when the pressing is released. The outlet 16 can be closed by restoring 53a. That is, since the return compression spring SP and the support shaft SS such as the shutter 50 are unnecessary, there is an advantage that the number of parts can be further reduced.

  Even a bulk feeder using the shutter 53 in place of the shutter 50 can realize the same supply operation as described above, and can obtain the same effect (except for the effect (6)).

  (4) FIG. 27 shows a fourth modification of the shutter 50. This modified example (shutter 50 ') is configured in the same way as the shutter 50 in that the left and right dimensions of the portion where the opening / closing part 50d is provided are locally reduced by providing a long hole 53e in the middle part of the arm part 50a. Make it different. Since other configurations are the same as those of the shutter 50, description thereof is omitted.

  As described above, the parts (EC1 to EC3) are taken out from the bulk feeder at the standby position shown in FIG. 19 and FIG. 20, but the leading parts (EC1 to EC3) are caused by the failure of taking out. It may remain in a state of protruding from the outlet 16. When the opening / closing part 50d returns from the open position to the closed position in such a state, the parts (EC1 to EC3) are sandwiched by the opening / closing part 50d in the middle of the return, and particularly in the parts (EC1 to EC3) having low rigidity. Will cause damage to the components (EC1 to EC3) due to the impact when sandwiched, for example, damage or loss.

  In the shutter 50 ′, the opening / closing part 50 d is easily displaced to the left due to the presence of the long hole 53 e, so that even when the components (EC 1 to EC 3) are sandwiched by the opening / closing part 50 d during the return, The impact at this time can be reduced by the leftward displacement of the opening / closing part 50d, and damage to the components (EC1 to EC3) can be avoided.

  Even a bulk feeder that uses the shutter 50 'in place of the shutter 50 can realize the same supply operation as described above and can obtain the same effect as described above.

  (5) FIGS. 28A and 28B show a fifth modification of the shutter 50. This modification differs from the shutter 50 in that the elastic member 50d1 made of urethane rubber or the like is provided on the opening / closing portion 50d of the shutter 50 so that the right side thereof slightly protrudes from the right side of the opening / closing portion 50d. To. Since other configurations are the same as those of the shutter 50, description thereof is omitted.

  The elastic body 50d1 is an alternative to the long hole described in the fourth modified example, and even when the parts (EC1 to EC3) are sandwiched by the opening / closing part 50d in the middle of return, the impact when sandwiched is elastic. It can be reduced by the elastic deformation of the body 51d1, and damage to the components (EC1 to EC3) can be avoided.

  Even a bulk feeder using this shutter instead of the shutter 50 can realize the same supply operation as described above and can obtain the same effect as described above. Further, even if the same elastic bodies 51d1 to 53d1 are provided in the opening / closing portions 51d to 53d of the shutters 51 to 53 shown as the first to third modifications, the effect of avoiding damage can be obtained similarly.

[Modification of rotor]
Next, a modification of the rotor 40 will be described with reference to FIGS.

  (1) FIGS. 29A and 29B show a first modification of the rotor 40. FIG. In this modification, the number and the angular interval of the pressing portions 40c2 are changed. The rotor 40-1 shown in FIG. 29A has a total of four pressing portions 40c2 at intervals of 90 degrees. The rotor 40-2 shown in FIG. 29 (B) has a total of two pressing portions 40c2 at intervals of 180 degrees. Of course, a total of three pressing portions 40c2 may be provided at intervals of 135 degrees.

  The number of pressing portions 40c2 depends on the rotation angle when the rotor 40 in the standby position is rotated after the parts are taken out. In short, when the rotation angle is 90 degrees, 180 degrees, or 135 degrees, it is not necessary to cause the shutter 50 to open and close during the rotation. Therefore, if the number of the pressing portions 40c2 is set according to the rotation angle, the shutter It is possible to avoid an unnecessary opening / closing operation in 50. Further, the angular intervals of the pressing portions 40c2 do not have to be equal, but the equal intervals make it easier to control the rotation of the rotor 40 in the supply operation.

  Even a bulk feeder using the rotor 40-1 or 40-2 in place of the rotor 40 can realize the same supply operation as described above, and can obtain the same effect as described above.

  (2) FIGS. 30A to 30C show a second modification of the rotor 40. In this modification, the formation position of the pressing portion 40c2 is changed. In the drawing, a total of eight pressing portions 40c2 'are provided on the outer peripheral surface of the rotor 40-3 at intervals of 45 degrees. Each pressing portion 40c2 'has the same shape as the pressing portion 40c2, and each pressing portion 40c2' can press the pressed portion 50c of the shutter 50 in the same manner as the pressing portion 40c2.

  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.

  (3) FIGS. 31A and 32A show a third modification of the rotor 40. In this modification, the number of permanent magnets 40d and the angular interval are changed, and the rotor 40-4 shown in FIG. 31A has a total of 16 permanent magnets 40d at intervals of 22.5 degrees. The rotor 40-5 shown in FIG. 31 (B) has a total of four permanent magnets 40d at intervals of 90 degrees.

  The number of permanent magnets 40d is basically 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 a bulk feeder using the rotor 40-1 or 40-2 in place of the rotor 40 can realize the same supply operation as described above, and can obtain the same effect as described above.

  (4) FIG. 32 shows a fourth modification of the rotor 40. In this modification, the shape of the permanent magnet 40d is changed, and the rotor 40-6 shown in FIG. 32 uses a quadrangular prism shape as the permanent magnet 40d ′, and one of the permanent magnets 40d ′. The center of the magnetic pole 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 40-6 in place of the rotor 40 can realize the same supply operation as described above and can obtain the same effect as described above.

[Modification of case]
Next, a modification of the case 10 will be described with reference to FIGS. 33 (A) to 36 (B).

  (1) FIGS. 33, 34 (A) and 35 (B) show a first modification of the case 10. In this modification (case 10-1), the number of components is reduced, and the left plate 11-1 shown in FIG. 34 (A) and the right plate 13-1 shown in FIG. 34 (B) are combined. Moreover, it does not have the intake port forming member 13d like the case 10.

  As shown in FIG. 34 (A), the left plate 11-1 has a predetermined rectangular thickness as viewed from the left, and is made of metal or plastic. The left plate 11-1 has screw holes 11a at four corners, a storage chamber recess 11b on the right side, and a shutter recess 11c at the center of the top 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.

  The shutter recess 11c has the same top view shape as the shutter recess 12c, and the depth of the shutter recess 11c coincides with the depth of the post-exit recess 13c. A spring support wall 11c1 is provided on the left side of the front portion of the shutter recess 11c, and a screw hole (not shown) is provided on the rear side of the bottom surface.

  As shown in FIG. 34 (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 curvature radius between the outer arc surface 13b1 and the inner arc surface 13b2 defines the width Wg (see FIGS. 5A to 5D). . 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. In addition, a straight groove (not shown) having the same cross-sectional shape as that of the circular arc groove 13b is defined on the front side from the uppermost point of the circular arc groove 13b and on the front side of the circular arc groove 13b. The three surfaces are provided so as to be continuous with the three surfaces defining the width Wg and the depth Dg of the arc groove 13b. Incidentally, the cross-sectional shape of the circular arc groove 13b shown in FIGS. 5A to 5D is adopted as the cross-sectional shape of the circular 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. 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 are partially opened upward through the outlet recess 13c.

  The shutter recess 13g is formed so as to cut out a part of the upper surface of the right plate 13, specifically, a front side portion of the outlet recess 13c in the left-right direction, and the depth thereof is the shutter of the left plate 11. This matches the depth of the concave portion 11c.

  In addition, a stopper rod 13e which is formed in a cylindrical shape or a quadrangular prism shape and is made of metal or plastic is attached to the straight groove on the left surface of the right plate 13 by press-fitting or bonding. As described above, since the rear end and the front portion of the straight groove are partially opened upward through the outlet recess 13c, FIG. 34 (B) is a stopper bar attached in the straight groove. The rear portion of 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.

  In order to assemble the case 10-1 shown in FIG. 33, the left surface of the right plate 13-1 shown in FIG. 34B is overlapped on the right surface of the left plate 11-1 shown in FIG. A set screw FS is inserted into each screw insertion hole 13a of the plate 13-1, and each set screw FS is screwed into each screw hole 11a of the left plate 11-1, so that the left plate 11-1 and the right plate 13-1 are connected. What is necessary is just to combine.

  Here, the case 10-1 is assembled using the set screw FS, but the screw hole 11a is excluded from the left plate 11-1, and the screw insertion hole 13a is excluded from the right plate 13-1. Instead of forming a through hole on both sides, the left plate 11-1 and the right plate 13-1 are overlapped, and then a resin pin is inserted into both through holes and both ends are thermally melted to bond the two. You may make it do. Further, the screw hole 11a is eliminated from the left plate 11-1 and the screw insertion hole 13a is eliminated from the right plate 13-1, and 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 side of the right plate 13-1 define a storage chamber 14 having a substantially circular left side profile (see FIG. 33). 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 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 10-1, 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) FIGS. 35A and 35B show a second modification and a third modification of the case 10, respectively. These modifications are obtained by removing the stopper bar 13e from the right plate 13, and the right plate 13-2 shown in FIG. 35A corresponds to the right plate 13 of the case 10 and is shown in FIG. The right plate 13-3 corresponds to the right plate 13-1 of the case 10-1.

  The right plate 13-2 shown in FIG. 35 (A) eliminates a straight groove (no symbol) provided in the front part from the uppermost point of the arc groove 13b ', and the wall at the front end (tip) of the arc groove 13b. Is used as a stopper. The right plate 13-3 shown in FIG. 35 (B) excludes a straight groove (no symbol) provided in the front portion from the uppermost point of the arc groove 13b ', and removes the front end (tip) of the arc groove 13b'. The wall is used as a stopper. In any case, there is no problem when the leading parts (EC1 to EC3) contacting the front end (tip) wall of the arc groove 13b ′ are taken out by the suction nozzle (not shown) of the mounter (electronic component mounting device). As described above, the shape of the outlet recess 13c ′ is changed to a shape having a front inclined surface.

  A case where the right plate 13 of the case 10 is changed to the right plate 13-2 shown in FIG. 35A, or the right plate 13-1 of the case 10-1 is a right plate shown in FIG. Even a bulk feeder using a case changed to 13-3 instead of the case 10 can realize the same supply operation as described above and can obtain the same effect as described above.

  (3) FIGS. 36A and 36B show a fourth modification and a fifth modification of the case 10, respectively. In these modified examples, the cross-sectional shape of the surface constituting the bottom of the storage chamber 14 is changed. The right plate 13-2 shown in FIG. 36 (A) corresponds to the case 10 and is shown in FIG. 36 (B). The case 10-3 corresponds to the case 10-1.

  In the case 10-2 shown in FIG. 36A, the cross section of the first circular arc surface 12b1 'constituting the storage chamber 14 is a curved surface forming a substantially ¼ circle. In the case 10-3 shown in FIG. 36B, the cross section of the first circular arc surface 11b1 'constituting the storage chamber 14 is a curved surface forming a substantially ¼ circle. Of course, the cross sections of the first arc surface 12b1 'and the first arc surface 11b1' may be inclined surfaces inclined at an acute angle with respect to the left surfaces of the right plates 13 and 13-1.

  If these cases 10-2 and 10-3 are used, even when the remaining number of components (EC1 to EC3) stored in the storage chamber 14 is reduced, the inclination of the first arcuate surfaces 12b1 ′ and 11b1 ′ is increased. The remaining parts (EC1 to EC3) remaining by use 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.

  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.

  Even a bulk feeder using the case 10-2 or 10-3 instead of the case 10 can realize the same supply operation as described above, and can obtain the same effect as described above.

  10, 10-1, 10-2, 10-3 ... case, 13b ... guide groove (arc groove), 13b1 ... outer arc surface, 13b2 ... inner arc surface, FP1, FP2 ... flat surface, 14 ... storage chamber, 15 ... Supply passageway, 15a ... Intake port, 16 ... Outlet port, 40, 40-1, 40-2, 40-3, 40-4, 40-5, 40-6 ... Rotor, 40c2, 40c2 '... Pressing part 40d, 40d '... permanent magnet, VC ... circular orbit (virtual circle), 50, 50', 51, 52, 53 ... shutter, 50a, 51a, 52a, 53a ... arm part, 50c, 51c, 52c, 53c ... Pressed part, 50d, 51d, 52d, 53d ... Opening / closing part, EC1-EC3 ... Parts.

Claims (17)

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;
An outlet of an upper surface opening provided at the front end of the supply passage, and for moving out of the supply passage and taking out a component in a predetermined direction supplied to the front end;
A shutter for closing or opening the outlet,
The rotor is provided with a plurality of pressing portions spaced along a predetermined circular path,
The shutter is provided with a pressed portion that can be pressed by the pressing portion of the rotor, and the shutter opens the outlet when the pressed portion is pressed in a predetermined direction by the pressing portion of the rotor, and the pressing portion When the is released, the outlet is closed. The bulk feeder according to claim 1,
In the rotor, the position where one magnetic pole of the permanent magnet has stopped after passing the outside of the take-out port is set as a standby position for picking up the parts. In this standby position, the pressed part of the shutter is moved in a predetermined direction by the pressing part of the rotor The outlet is opened by being pressed. The bulk feeder according to claim 1,
The plurality of pressing portions of the rotor are formed of portions protruding in a mountain shape, and the pressed portion of the shutter is pressed in a predetermined direction when the pressed portion rides on the pressing portion of the rotor. The bulk feeder according to claim 3,
The plurality of pressing portions of the rotor have a trapezoidal shape having inclined surfaces on both sides. The bulk feeder according to claim 3,
The plurality of pressing portions of the rotor are provided on a surface of the rotor facing the side wall of the storage chamber. The bulk feeder according to claim 3,
The plurality of pressing portions of the rotor are provided on the outer peripheral surface of the rotor. The bulk feeder according to claim 3.
The plurality of pressing portions of the rotor are provided on the rotor at equiangular intervals so that each of the pressing portions follows a predetermined circular orbit. The bulk feeder according to claim 7,
The number of pressing parts is eight in total, and each angular interval is 45 degrees. The bulk feeder according to claim 1,
The pressed portion of the shutter has a rounded shape at the tip, and the tip is pressed by the pressing portion of the rotor. The bulk feeder according to claim 9,
The shutter has a pressed part on a rigid arm part that is not easily elastically deformed, and the pressed part is supported by a spring,
The shutter opens the outlet by a displacement against the spring biasing force when the pressed portion is pressed by the pressing portion of the rotor, and the shutter is released by the return by the spring biasing force when the pressing is released. Block the exit. The bulk feeder according to claim 9,
The shutter has a pressed part on the arm part that enables deformation and restoration based on elasticity,
The shutter opens the outlet by deforming the arm when the pressed part is pressed by the pressing part of the rotor, and closes the outlet by restoring the arm when the pressing is released. Do. The bulk feeder according to claim 1,
The plurality of permanent magnets are provided on the rotor at equal angular intervals so that the centers of the respective one magnetic poles are located on a predetermined circular orbit. The bulk feeder according to claim 12,
The total number of permanent magnets is eight, and each angular interval is 45 degrees. 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 14,
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 15, wherein
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 15, wherein
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.

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