JP5067395B2 - Parts feeder - Google Patents

Description

  The present invention relates to a parts feeder that conveys multilayer electronic components.

  Vertical and horizontal alignment as a conventional parts feeder, in which inclined walls and slopes provided in the middle of a spiral track formed inside a bowl attached to a vibrating body, and magnets that generate magnetic lines perpendicular to the track are arranged And a top-and-bottom aligning portion configured by a groove in which a terminal of the electronic component is hooked and a top-and-bottom reversing device for reversing the top and bottom of the electronic component are known (for example, Patent Documents) 1). In this parts feeder, the electronic components are aligned horizontally in the vertical and horizontal alignment section, the vertical alignment of the electronic components aligned horizontally in the vertical alignment section is turned upside down, and inverted by the vertical reversing device. Align.

Japanese Patent Laid-Open No. 11-217115

  In the above-described parts feeder, all of the alignment units that align the electronic components are arranged in a desired posture using the difference in the external shape of the electronic components, and thus the electronic component in which the orientation to be aligned appears as the external shape Alignment can only be performed on. Therefore, when aligning the stacking direction of the internal electrode layers, the electronic components should be aligned or selected so that the difference in the stacking direction does not appear in the external shape (for example, when the cross-sectional shape in the short direction is a square electronic component). There was a problem that could not be done.

  The present invention has been made to solve such problems, and a parts feeder that can easily select the stacking direction of internal electrode layers of stacked electronic components to be transported, regardless of the external shape. The purpose is to provide.

  A parts feeder according to the present invention is a parts feeder for transporting a substantially rectangular parallelepiped multilayer electronic component having a plurality of internal electrode layers containing a ferromagnetic material, and extends along the transport direction of the multilayer electronic component. A first support surface that supports the laminated electronic component against gravity and a second support surface that is arranged to intersect the first support surface and extends along the transport direction together with the first support surface. And a magnetic force generating means for generating magnetic force lines in a direction crossing the second support surface, and the first support surface has an opening formed in a region where the magnetic force lines of the magnetic force generating means act on the multilayer electronic component. The opening is formed so that the stacked electronic component arranged so that the stacking direction intersects the second support surface is dropped when passing.

  In the parts feeder according to the present invention, the stacked electronic component transported in the transport direction passes through the lines of magnetic force generated by the magnetic force generating means. At this time, for the multilayer electronic component arranged so that the lamination direction is parallel to the second support surface, the magnetic field lines pass between the internal electrode layers, so that the internal electrode layer containing the strong electromagnetic body Magnetic force acts on all of the above. As a result, the multilayer electronic component is attracted to the magnetic force generating means side, comes into contact with the second support surface, and moves in the transport direction while being supported by the second support surface. Thus, it is possible to pass through the opening without falling at the opening by avoiding the opening. On the other hand, in the multilayer electronic component arranged so that the lamination direction intersects the second support surface, the magnetic field lines are shielded by the inner electrode layer which is the outermost layer, so that only the outermost internal electrode layer has a magnetic force. Acts and no magnetic force acts on the other internal electrode layers. Thus, the multilayer electronic component is transported without being sufficiently attracted to the magnetic force generating means, and is selected by dropping at the opening. As described above, the stacking direction of the internal electrode layers can be easily selected regardless of the outer shape of the multilayer electronic component with a simple configuration of only the magnet and the opening without applying a complicated device configuration such as an appearance inspection device. be able to.

  Moreover, the parts feeder which concerns on this invention WHEREIN: It is preferable that the edge part by the side of the 2nd support surface of an opening part is extended even to the 2nd support surface. As a result, a step portion is not formed between the second support surface and the opening. Accordingly, when the multilayer electronic component passes over the opening, it is supported only by the magnetic force from the magnet in contact with only the second support surface. For example, if the size of the multilayer electronic component is small, the adhesive force to the second support surface due to the influence of static electricity, moisture, friction, etc. will be relatively large, and the multilayer electronic component that should be dropped at the opening is the second support surface There is a possibility of affecting the sortability by adhering to. However, with this parts feeder, it is possible to reliably sort even small-sized multilayer electronic components.

  Moreover, in the parts feeder according to the present invention, the end portion of the opening on the second support surface side is in contact with the second support surface by the stacked electronic component arranged so that the stacking direction intersects the second support surface. In this case, it is preferable that the horizontal direction extends further to the second support surface side than the position of the center of gravity of the multilayer electronic component. As a result, a stepped portion is formed between the opening and the second support surface, so that not only the magnetic force generated by the magnetic force generating means but also the stepped portion can be supported. Therefore, even a multilayer electronic component having a large size can be reliably passed. In addition, the end of the opening on the second support surface side is located at the center of gravity in the horizontal direction when a stacked electronic component arranged so that the stacking direction intersects the second support surface is in contact with the second support surface. Rather than the second support surface side. Therefore, even if the laminated electronic component to be dropped is caught on the stepped portion, it can be reliably dropped and selected into the opening.

  Regardless of the external shape, the stacking direction of the internal electrode layers of the object to be conveyed can be easily selected.

It is a perspective view which shows the parts feeder which concerns on 1st embodiment of this invention. It is sectional drawing along the II-II line | wire shown in FIG. It is sectional drawing of the sorting mechanism of the parts feeder which concerns on 2nd embodiment of this invention, and is a figure corresponding to FIG. It is a figure which shows the structure of the selection mechanism of the parts feeder which concerns on 3rd embodiment of this invention. It is a figure which shows the structure of the selection mechanism of the parts feeder which concerns on 4th embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

[First embodiment]
With reference to FIG.1 and FIG.2, the parts feeder 1 which concerns on 1st embodiment of this invention is demonstrated in detail. FIG. 1 is a perspective view showing a parts feeder 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG.

  First, a multilayer electronic component that is an object conveyed by the parts feeder 1 according to the present invention will be described. A multilayer electronic component 100 to be transported is a multilayer capacitor, a multilayer chip varistor, or the like, and has a substantially rectangular parallelepiped shape as shown in FIG. The multilayer electronic component 100 is formed by transferring and pasting a plurality of electrode pastes onto a ceramic green sheet and firing, and includes a plurality of internal electrode layers 101 in the stacking direction as shown in FIG. It is configured. The internal electrode layer 101 contains a ferromagnetic material, for example, Ni or an alloy thereof. In particular, in the parts feeder according to the present embodiment, when applying a multilayer electronic component in which the difference in the stacking direction does not appear in the appearance shape by making the cross-sectional shape in the short direction square, the conventional parts feeder As compared with the above, a preferable effect can be obtained. The multilayer electronic component 100 has a short side length of 0.2 to 3.2 mm, a long side length of 0.4 to 4.5 mm, and a thickness in the stacking direction of 0.2 to 3 mm. .2 mm. The distance between the internal electrode layers 101 is 1 to 15 μm.

  Next, the configuration of the parts feeder 1 will be described. As shown in FIG. 1, the parts feeder 1 includes a hopper 2 that supplies the multilayer electronic component 100, a linear feeder 3 that transports and sorts the multilayer electronic component 100, and the multilayer electronic that is sorted and removed. And a return mechanism 4 for supplying the component 100 to the linear feeder 3 again. The parts feeder 1 transports the multilayer electronic component 100 so that the longitudinal direction thereof is along the transport direction FD, and the external inspection apparatus accepts the multilayer electronic component A100 in a posture in which the stacking direction and the vertical direction are parallel to each other. (Not shown) has a function of removing the stacked electronic component E100 in a posture in which the stacking direction and the horizontal direction are parallel to each other as a rejected product, and changing the posture by the return mechanism 4 and selecting again. ing.

  The hopper 2 has a funnel shape, and includes a conical cylindrical storage unit 2a that stores a predetermined amount of the multilayer electronic component 100, and a cylindrical supply unit 2b provided at the bottom of the storage unit 2a. Has been. The lower end of the supply unit 2 b of the hopper 2 is disposed above the linear feeder 3. Moreover, the bottom part of the storage part 2a can be opened and closed, and the stacked electronic component 100 stored by opening the bottom part is supplied to the linear feeder 3. The hopper 2 is supplied with a large number of multilayer electronic components 100 by hand.

  The linear feeder 3 includes a chute (conveying unit) 6 that guides the multilayer electronic component 100 supplied from the hopper 2 and a drive unit 7 that moves the multilayer electronic component 100 by applying vibration to the chute 6. It is configured. The linear feeder 3 is formed with a notch (opening) 8 in the chute 6 and a magnet (magnetic force generating means) 9 attached thereto, thereby accepting a multilayer electronic component A100 and a reject multilayer electronic component E100. A sorting mechanism 11 is provided. The detailed configuration of the sorting mechanism 11 will be described later.

  The chute 6 of the linear feeder 3 is a guide member having a U-shaped cross section that extends along the conveyance direction FD of the multilayer electronic component 100 and is arranged so that the opening faces upward. The chute 6 is made of a resin or nonmagnetic metal that does not act on the magnetic force. The chute 6 supports the multilayer electronic component 100 against gravity by a bottom surface (first support surface) 6a which is the upper surface of the U-shaped bottom wall 6C, and also the inner surface (second surface) of the side wall 6A orthogonal to the bottom surface 6a. A support in the horizontal direction intersecting the conveyance direction FD of the multilayer electronic component 100 is made by the support surface 6b and the inner surface 6c of the side wall 6B. The chute 6 has a bottom surface 6a facing the lower end of the supply portion 2b of the hopper 2 at the upstream end portion 6d in the transport direction FD, and a downstream end portion 6e in the transport direction FD is not shown. It is arranged to be connected with. The width of the bottom surface 6a of the chute 6 is set to be smaller than the length in the long side direction of the multilayer electronic component 100 and larger than the length in the short side direction, and is specifically set to 0.3 to 4 mm. Further, the height of the inner surface 6c of the chute 6 is set to be larger than the thickness in the stacking direction of the multilayer electronic component 100, and is specifically set to 0.8 to 4 mm. The drive unit 7 of the linear feeder 3 is provided on the lower surface side of the chute 6. The drive unit 7 is an electromagnetic type having an electromagnet and a leaf spring (not shown), and vibrates by itself when the vibration of the electromagnet is amplified by the leaf spring.

  The return mechanism 4 includes a collecting plate 12 that receives the rejected stacked electronic component E100 that has been sorted and removed by the sorting mechanism 11 of the linear feeder 3 below, and a rejected stack that is recovered by the collecting plate 12. The electronic component E100 is provided with resupply members 13 and 14 for conveying the electronic component E100 to the end 6d side of the chute 6 and supplying it to the chute 6 again. A drive unit (not shown) is connected to the recovery plate 12 and the resupply members 13 and 14, and a return direction that is a direction opposite to the transport direction FD for the multilayer electronic component E100 that is a rejected product due to vibration of the drive unit. Can be transported to RD. The collection plate 12 is a rectangular plate-like member arranged below the chute 6 and is arranged such that the center position thereof coincides with the notch 8 in the sorting mechanism 11 of the chute 6 when viewed from above. The multilayer electronic component E100 recovered by the recovery plate 12 is conveyed in the return direction on both sides in the width direction.

  The resupply members 13 and 14 of the return mechanism 4 are a pair of guide members disposed on both sides of the chute 6 in the width direction. The resupply members 13 and 14 are right-angled triangular members extending in the return direction RD from the collection plate 12 toward the end 6d of the chute 6. The upper surface 13a of the resupply member 13 has a height on one end side that is the same as the upper surface of the recovery plate 12, and becomes higher as it advances in the return direction RD, and the height on the other end side is the supply portion 2b of the hopper 2. And almost the same height. Further, a part of the upper surface 13a on the other end side of the resupply member 13 is cut to form an inclined surface 13b that is inclined toward the chute 6 side. As a result, the rejected stacked electronic component E100 recovered by the recovery plate 12 goes in the return direction RD along the upper surface 13a of the resupply member 13 and rises in height, and the inclined surface 13b causes the chute 6 side. Is then supplied to the chute 6 again. The upper surface 13a of the resupply member 14 has the same height on one end side as the upper surface of the collection plate 12 and becomes higher as it advances in the return direction RD, and the height on the other end side is the supply portion 2b of the hopper 2. And almost the same height. Further, a part of the upper surface 14a on the other end side of the resupply member 14 is cut to form an inclined surface 14b that is inclined toward the chute 6 side. Accordingly, the rejected stacked electronic component E100 recovered by the recovery plate 12 goes in the return direction RD along the upper surface 14a of the resupply member 14 and increases in height, and the inclined surface 14b causes the chute 6 side. Is then supplied to the chute 6 again.

  Next, the configuration of the sorting mechanism 11 of the linear feeder 3 will be described in detail with reference to FIG. The sorting mechanism 11 of the linear feeder 3 includes a side wall 6A of the chute 6, a bottom wall 6C, a magnet 9 provided on the side wall 6A, and a notch 8 formed by notching the bottom surface 6a. ing. The sorting mechanism 11 passes the multilayer electronic component A100, which is an acceptable product, in the transport direction FD, and drops the multilayer electronic component E100, which is an unacceptable product, at the notch 8 to remove it. It has a function to select products.

  The magnet 9 is a permanent magnet or an electromagnet fixed to the back surface side of the inner surface 6b in the side wall 6A. The magnet 9 is arranged so that the side wall 6A side is an N pole and the opposite side is an S pole, so that the inner surface 6b, 6c intersects between the inner surface 6b and the inner surface 6c through which the multilayer electronic component 100 passes. Magnetic field lines G are generated in such a direction as to go from the inner surface 6b to the inner surface 6c. As the magnet 9, a magnet having a surface magnetic flux density of about 2000 to 2800 gauss is applied. The distance between the magnet 9 and the multilayer electronic component 100, that is, the thickness of the side wall 6A is set to 2 to 3 mm.

  The notch 8 is formed by penetrating the bottom wall 6 </ b> C of the chute 6 in a position adjacent to the magnet 9 through the side wall 6 </ b> A, that is, in a region where the magnetic force line G by the magnet 9 acts on the multilayer electronic component 100. The notch 8 is a rectangular through hole that extends from the inner surface 6c toward the inner surface 6b. The notch 8 is formed in such a size that the rejected multilayer electronic component E100 can be dropped. Specifically, the length in the transport direction FD is 1.5 to 6 mm, and the length in the width direction. Is set to 0.25 to 3.9 mm. The end portion on the inner surface 6c side in the width direction of the notch 8 coincides with the inner surface 6c, but the end portion 8a on the inner surface 6b side extends to the front side of the inner surface 6b, and thereby the inner surface 6b side has an inner surface. A step 15 is formed between 6 b and the notch 8. The step portion 15 has a function of supporting the end of the multilayer electronic component A100 on the inner surface 6b side in the direction of gravity when the acceptable multilayer electronic component A100 is supported on the inner surface 6b by the action of the magnetic lines of force G. is doing. The end 8a of the notch 8 extends to the inner surface 6b side of the center of gravity GP of the multilayer electronic component E100 in the horizontal direction when the rejected multilayer electronic component E100 contacts the inner surface 6b. Yes. With such a configuration, the width of the step portion 15 (indicated by L1 in FIG. 2) is 0.05 to 1 mm. In the figure, the center of gravity GP of the multilayer electronic component A100, which is an acceptable product, is shown. However, since the cross-sectional shape is square, it matches the position of the center of gravity of the multilayer electronic component E100, which is an unacceptable product. The positional relationship with the end 8a of the notch 8 is the same.

  Next, the operation and effect of the parts feeder 1 configured as described above will be described.

  The laminated electronic component 100 transported in the transport direction FD along the bottom surface 6 a of the chute 6 passes through the magnetic force lines G generated by the magnet 9 when passing through the sorting mechanism 11. At this time, with respect to the multilayer electronic component A100 which is an acceptable product arranged so that the lamination direction and the vertical direction are parallel to each other, all the strong magnetic fields G pass between the internal electrode layers 101, so Magnetic force acts on the internal electrode layer containing the electromagnetic body. Thereby, the multilayer electronic component A100 is attracted to the magnet 9 side, contacts the inner surface 6b, moves in the transport direction FD while being supported by the inner surface 6b and the stepped portion 15, and does not fall at the notch portion 8. It can pass through the sorting mechanism 11.

  On the other hand, regarding the multilayer electronic component E100 which is a rejected product arranged so that the lamination direction is orthogonal to the inner surface 6b, the magnetic field lines G are shielded by the internal electrode layer 101A which is the outermost layer, thereby causing the internal electrode layer A magnetic force acts only on 101A and no magnetic force acts on the other internal electrode layers 101. As a result, the multilayer electronic component E100 is transported without being sufficiently attracted to the magnet 9 and dropped at the notch 8 to be selected as an acceptable product.

  As described above, according to the parts feeder 1 according to the present embodiment, the external shape of the multilayer electronic component 100 can be achieved with a simple configuration of only the magnet 9 and the cutout portion 8 without applying a complicated device configuration such as an appearance inspection device. Regardless, the stacking direction of the internal electrode layers 101 can be easily selected.

  In addition, since the parts feeder 1 can perform sorting in the stacking direction while continuously transporting without temporarily interrupting the transport for the sorting process, the processing ability as the parts feeder 1 can be improved. .

  Moreover, according to the parts feeder 1 which concerns on this embodiment, since the level | step-difference part 15 is formed between the notch part 8 and the inner surface 6b, it can support not only the magnetic force by the magnet 9, but the level | step-difference part 15 as well. Therefore, even if it is the multilayer electronic component A100 with a large chip size, it is possible to reliably pass the acceptable product. Further, the end portion 8a on the inner surface 6b side of the notch portion 8 extends to the inner surface 6b side from the gravity center position GP in the horizontal direction when the rejected multilayer electronic component E100 contacts the inner surface 6b. . Therefore, even if the multilayer electronic component E100, which is a rejected product, is caught on the step portion 15, it can be reliably dropped into the notch portion 8 due to the influence of gravity.

[Second Embodiment]
FIG. 3 is a cross-sectional view of the parts feeder sorting mechanism 20 according to the second embodiment of the present invention, and corresponds to FIG. The parts feeder according to the second embodiment is different from the parts feeder 1 according to the first embodiment in that a step portion is not provided between the notch (opening) 21 and the inner surface 6b of the chute 6.

  Specifically, the sorting mechanism 20 includes a side wall 6A of the chute 6, a bottom wall 6C, a magnet 9 provided on the side wall 6A, and a cutout portion 21 formed by cutting out the bottom surface 6a. Has been. The sorting mechanism 20 has the same configuration as that of the sorting mechanism 11 according to the first embodiment except for the notch 21.

  The notch 21 is formed by penetrating the bottom wall 6C of the chute 6 in a position adjacent to the magnet 9 through the side wall 6A, that is, in a region where the magnetic force line G by the magnet 9 acts on the multilayer electronic component 100. The notch 8 is a rectangular through-hole that extends from the inner surface 6c toward the inner surface 6b. The notch 8 is formed to have a size that allows the rejected multilayer electronic component E100 to pass through. Specifically, the length in the transport direction FD is 1.5 to 6 mm, and the length in the width direction. Is set equal to the width of the bottom surface 6a. The end portion on the inner surface 6c side in the width direction of the notch portion 8 coincides with the inner surface 6c, and the end portion 21a on the inner surface 6b side also extends to the inner surface 6b. As a result, a step portion is not provided on the inner surface 6b side.

  Thus, according to the parts feeder which concerns on 2nd embodiment, since the edge part 21a by the side of the inner surface 6b of the notch part 21 has extended to the said inner surface 6b, a level | step-difference part is provided between the inner surface 6b and the notch part 21. The configuration is such that is not formed. As a result, when the multilayer electronic component A100, which is an acceptable product, passes over the cutout portion 21, it contacts only the inner surface 6b and is supported only by the magnetic force from the magnet 9. For example, when the size of the multilayer electronic component 100 is small, the adhesion force to the inner surface 6b due to the influence of static electricity, moisture, friction, etc. is relatively large, and the rejected multilayer electronic component E100 adheres to the inner surface 6b. This may affect the sortability. However, in the parts feeder according to the second embodiment, it is possible to reliably perform the selection for the multilayer electronic component 100 having a small size. The size of the multilayer electronic component 100 suitable as a conveyance object of the parts feeder of this second embodiment has a short side length of 0.2 to 1.2 mm and a long side length of 0.4 to 1.2 mm. 2 mm, and the thickness in the stacking direction is 0.2 to 1.2 mm.

[Third embodiment]
4A and 4B are diagrams showing the configuration of the sorting mechanism 30 of the parts feeder according to the third embodiment of the present invention. FIG. 4A is a cross-sectional view corresponding to FIG. FIG. The parts feeder according to the third embodiment is different from the parts feeder 1 according to the first embodiment in that not only the bottom surface 6a but also the side wall 6B is cut out.

  Specifically, the sorting mechanism 20 includes a side wall 6A of the chute 6, a bottom wall 6C, a magnet 9 provided on the side wall 6A, and a notch (opening) formed by cutting out the bottom wall 6C and the side wall 6B. Part) 31. The sorting mechanism 30 has the same configuration as that of the sorting mechanism 11 according to the first embodiment except for the notch 31.

  The notch 31 is formed by notching the bottom wall 6C and the side wall 6B of the chute 6 in a position adjacent to the magnet 9 through the side wall 6A, that is, in a region where the magnetic force line G by the magnet 9 acts on the multilayer electronic component 100. Is done. This notch 31 is formed by cutting out all the bottom wall 6C and the side wall 6B in the region on the inner surface 6c side from the position separated from the inner surface 6b by a predetermined distance from the inner surface 6b at a position adjacent to the magnet 9. . The length of the notch 31 in the transport direction FD is set to 1.5 to 6 mm. In addition, the step portion 15 is provided between the notch portion 31 and the inner surface 6b. The step portion 15 has a function of supporting the end of the multilayer electronic component A100 on the inner surface 6b side in the direction of gravity when the acceptable multilayer electronic component A100 is supported on the inner surface 6b by the action of the magnetic lines of force G. is doing. The end 31a of the notch 31 extends to the inner surface 6b side of the center of gravity GP of the multilayer electronic component E100 in the horizontal direction when the rejected multilayer electronic component E100 contacts the inner surface 6b. Yes. With such a configuration, the width of the step portion 15 (indicated by L3 in FIG. 4) is 0.05 to 1 mm. In the figure, the center of gravity GP of the multilayer electronic component A100, which is an acceptable product, is shown. However, since the cross-sectional shape is square, it matches the position of the center of gravity of the multilayer electronic component E100, which is an unacceptable product. The positional relationship with the end 31a of the notch 31 is the same.

  Thus, according to the parts feeder which concerns on 3rd embodiment, the bottom wall 6C and the side wall 6B in the area | region of the inner surface 6c side rather than the edge part 31a by the side of the inner surface 6b of the notch part 31 are all notched. Therefore, it is possible to widen the region where the rejected multilayer electronic component E100 falls, and to reliably prevent the multilayer electronic component E100 from being caught between the side wall 6A and the side wall 6B. In particular, when the step portion 15 is provided, it can be prevented from being caught between the step portion 15 and the side wall 6B. Therefore, the space between the side wall 6A and the side wall 6B is narrowed to reduce the size of the apparatus. Even in such a case, it is possible to reliably perform selection.

[Fourth embodiment]
FIG. 5 is a view showing a configuration of a sorting mechanism 40 of a parts feeder according to a fourth embodiment of the present invention, (a) is a sectional view corresponding to FIG. 2, and (b) is a plan view of the sorting mechanism 40. FIG. The parts feeder according to the fourth embodiment is different from the parts feeder 1 according to the first embodiment in that the configuration of the chute is different.

  Specifically, as shown in FIG. 5, the chute (conveying unit) 46 extends to a guide member 47 having an isosceles right triangular shape extending along the conveying direction FD and further along the conveying direction FD. The guide member 48 having an isosceles right triangle shape is attached. The guide member 47 has an inclined surface (second support surface) 47a having a bottom side surface facing upward and 45 ° with respect to the horizontal direction, and one oblique side surface becomes a lower surface 47b spreading in the horizontal direction, Are arranged so that the hypotenuse side of the side surface is a side surface 47c extending in the vertical direction. The guide member 48 has a cross-sectional area that is half that of the guide member 47, the bottom side surface is a side surface 48a that extends in the vertical direction, and one oblique side surface is attached to the inclined surface 47a of the guide member 47, The other hypotenuse side surface is an inclined surface (first support surface) 48b that forms 45 ° with respect to the horizontal direction (90 ° with respect to the inclined surface 47a) while facing upward. In the chute 46 having such a configuration, the inclined surface 47a and the inclined surface 48b support the mutually orthogonal side surfaces of the multilayer electronic component 100, respectively. The chute 46 is provided with a sorting mechanism 40 that sorts the multilayer electronic component 100.

  The sorting mechanism 40 includes a guide member 47 of the chute 46, a guide member 48, a magnet (magnetic force generating means) 49 provided on the guide member 47, and a notch (opening) formed by notching the guide member 48. 50). The sorting mechanism 40 passes the multilayer electronic component A100, which is an acceptable product, in the transport direction, and drops the multilayer electronic component E100, which is an unacceptable product, by dropping it at the notch 50, thereby removing the acceptable product and the rejected product. It has a function to sort. In the fourth embodiment, a product whose lamination direction is parallel to the inclined surface 47a is an acceptable product, and a product whose lamination direction is orthogonal to the inclined surface 47a is a rejected product.

  The magnet 49 is a permanent magnet disposed so that the N-pole surface is parallel to the inclined surface 47a at a position near the corner between the side surface 47c and the lower surface 47b and close to the side surface 47c. Electromagnet. The magnet 49 is arranged such that the inclined surface 47a side is the N pole and the opposite side is the S pole, so that the inclined surface 47a is interposed between the inclined surface 47a and the inclined surface 48b through which the multilayer electronic component 100 passes. Magnetic field lines G are generated so as to go outward in the direction intersecting with. As the magnet 49, a magnet having a surface magnetic flux density of about 2000 to 2800 gauss is applied. The distance between the magnet 49 and the multilayer electronic component 100 is 2 to 3 mm.

  The notch 50 is formed by notching the guide member 48 entirely in a position adjacent to the magnet 49 via the guide member 47, that is, in a region where the magnetic force line G by the magnet 49 acts on the multilayer electronic component 100. The notch 50 is formed in a size that allows the rejected multilayer electronic component E100 to pass through. Specifically, the length in the transport direction FD is set to 1.5 to 6 mm. . The end 50a of the notch 8 coincides with the inclined surface 47a.

  In the parts feeder according to the fourth embodiment configured as described above, when the stacked electronic component 100 transported in the transport direction FD along the inclined surface 48b of the chute 46 passes through the sorting mechanism 40. It passes through the lines of magnetic force G by the magnet 49. At this time, with respect to the multilayer electronic component A100 which is an acceptable product arranged so that the laminating direction is parallel to the inclined surface 47a, all the strong magnetic fields G pass between the internal electrode layers 101, so Magnetic force acts on the internal electrode layer containing the electromagnetic body. Thereby, the multilayer electronic component A100 can be attracted to the magnet 49 side and moved in the transport direction FD while being supported by the inclined surface 47a, and can pass through the sorting mechanism 40 without dropping at the notch 50. .

  On the other hand, for the multilayer electronic component E100 which is a rejected product arranged so that the stacking direction is orthogonal to the inclined surface 47a, the magnetic field lines G are shielded by the internal electrode layer 101A which is the outermost layer, thereby causing the internal electrode A magnetic force acts only on the layer 101A and no magnetic force acts on the other internal electrode layers 101. Accordingly, the multilayer electronic component E100 is conveyed without being sufficiently attracted by the magnet 49, and is selected as an acceptable product by sliding down the inclined surface 47a (that is, the end portion 50a) at the notch 50.

  As described above, according to the parts feeder according to the present embodiment, the external shape of the multilayer electronic component 100 can be obtained with a simple configuration of only the magnet 49 and the notch 50 without applying a complicated device configuration such as an appearance inspection device. Regardless, the stacking direction of the internal electrode layers 101 can be easily selected.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not necessarily limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the summary.

  For example, in the above-described embodiment, the acceptable product is continuously conveyed and the rejected product is dropped, but the dropped product may be processed as the accepted product. Moreover, in the above-mentioned embodiment, the state which supported the acceptable product with the predetermined support surface with magnetic force was hold | maintained and conveyed, However, an acceptable product is moved to another direction along a 2nd support surface with magnetic force. It is good also as a structure which avoids the fall by a notch part and drops only a rejected product.

  In the fourth embodiment, the end portion 50a of the cutout portion coincides with the inclined surface 47a, and the step portion is not provided. However, the inclination angle of the inclined surface 47a is increased and the inclined surface is provided. The center of gravity of the multilayer electronic component 100 in which the end portion 50a of the notch 50 at the position 48b (that is, the corner portion where the inclined surface 48b and the end portion 50a intersect) is supported by the inclined surface 47a and the inclined surface 48b in the horizontal direction. Since the multilayer electronic component E100 can fall by gravity if it extends to the inclined surface 47a side from the position, such a configuration can also be adopted.

  DESCRIPTION OF SYMBOLS 1 ... Parts feeder, 6,46 ... Chute (conveyance part), 6a support ... Bottom face (first support surface), 6b ... Side face (second support surface), 8, 21, 31, 50 ... Notch part (opening part) 8a, 21a, 31a, 50a ... end, 9, 49 ... magnet (magnetic force generating means), 100, A100, E100 ... multilayer electronic component, 101 ... internal electrode layer.

Claims (3)

A parts feeder for transporting a substantially rectangular parallelepiped laminated electronic component having a plurality of internal electrode layers containing a ferromagnetic material,
A first support surface that extends along the conveying direction of the multilayer electronic component and supports the multilayer electronic component against gravity, and the first support surface that is arranged to intersect the first support surface A transport unit having a second support surface extending along the transport direction along with the surface;
Magnetic force generating means for generating magnetic force lines in a direction intersecting with the second support surface,
In the first support surface, an opening is formed in a region where the magnetic field lines of the magnetic force generating means act on the multilayer electronic component,
The opening is arranged such that the stacked electronic component arranged so that the stacking direction intersects the second support surface falls when passing, and the stacking direction is parallel to the second support surface. The multilayer electronic component is attracted to the magnetic force generating means side, comes into contact with the second support surface, and moves in the transport direction while being supported by the second support surface, thereby passing without dropping. is formed so as to,
The end of the opening on the second support surface side is horizontal when the stacked electronic component arranged so that the stacking direction intersects the second support surface is in contact with the second support surface. Extending to the second support surface side of the center of gravity of the multilayer electronic component in the direction,
The parts feeder , wherein the first support surface is a horizontal surface .   The transport unit has an inner surface facing the second support surface across the first support surface,
  2. The parts feeder according to claim 1, wherein the inner surface is cut out in a region where the magnetic lines of force of the magnetic force generating means act on the multilayer electronic component. A parts feeder for transporting a substantially rectangular parallelepiped laminated electronic component having a plurality of internal electrode layers containing a ferromagnetic material,
A first support surface that extends along the conveying direction of the multilayer electronic component and supports the multilayer electronic component against gravity, and the first support surface that is arranged to intersect the first support surface A transport unit having a second support surface extending along the transport direction along with the surface;
Magnetic force generating means for generating magnetic force lines in a direction intersecting with the second support surface,
In the first support surface, an opening is formed in a region where the magnetic field lines of the magnetic force generating means act on the multilayer electronic component,
The opening is arranged such that the stacked electronic component arranged so that the stacking direction intersects the second support surface falls when passing, and the stacking direction is parallel to the second support surface. The multilayer electronic component is attracted to the magnetic force generating means side, comes into contact with the second support surface, and moves in the transport direction while being supported by the second support surface, thereby passing without dropping. is formed so as to,
An end of the opening on the second support surface side extends to the second support surface .

Images