TRANSPORTATION APPARATUS AND TRANSPORTATION METHOD

Abstract

To provide a transport device capable of stabilizing a posture of an electronic component in a transport of the electronic component.SOLUTION: A transport device 1 is a device for transporting a rectangular parallelepiped ceramic lamination body 13 as an electronic component before the completion, having an internal electrode formed by a strong magnetic body, and comprises: a transport part 21 having a groove-like transport path 20; transporting means of transporting the ceramic lamination body 13 in the transport path 20; and an application part 23 that applies a magnetic force to the ceramic lamination body 13 in the transport path 20. A bottom surface 27 of the transport path 20 is a curve concaved to an outer side of the transport path 20 in a cross sectional surface in view from the transport direction. When the electronic component is cut at a position of a center part of a long direction, and a square WT cross section regulated by a width direction of the electronic component and a height direction of the electronic component is viewed, a curvature radius of the curve of the transport path 20 is 100% or more and 200% or less of the curvature radius to which the WT cross section is inscribed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a conveying device and a conveying method, and more particularly to a conveying device and a conveying method for conveying electronic components having internal electrodes made of ferromagnetic material. [Background technology]

[0002] The following Patent Document 1 discloses a chip component positioning device that rotates the chip component so that the arrangement direction of both electrodes of the chip component and the display direction of the chip component are in a fixed direction. In this positioning device, a magnet installed near the throat on the upstream side of the passage rotates the chip component so that the surface of the chip component with iron powder attached faces the side opposite the side where the magnet is installed. Then, an electromagnet installed on the side on the downstream side of the passage and an electromagnet installed below the downstream side of the passage rotate the chip component around an axis along the length direction. This makes it possible to keep the arrangement direction of both electrodes of the chip component and the display direction of the chip component constant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-336090 Summary of the Invention [Problem to be solved by the invention]

[0004] In this way, in the conventional case, the chip components are rotated by magnets or electromagnets to stabilize their positions, but the passage for the chip components does not take into consideration stabilizing the positions of the chip components. Therefore, there are cases where the chip components do not rotate, and there is a risk that the positions of the chip components cannot be stabilized.

[0005] The present invention has been made in view of the above problems, and has an object to provide a transport device and a transport method capable of stabilizing the posture of an electronic component when transporting the electronic component. [Means for solving the problem]

[0006] The conveying device of the present invention is a conveying device for conveying rectangular parallelepiped electronic components having internal electrodes made of a ferromagnetic material, and comprises a conveying section having a groove-shaped conveying path, a conveying means for conveying the electronic components on the conveying path, and an application section for applying a magnetic force to the electronic components in the conveying path, wherein the bottom surface of the conveying path is a curve that is concave outwardly of the conveying path in a longitudinal cross section viewed from the conveying direction, and when the electronic component is cut at the center position in the longitudinal direction and a rectangular WT cross section defined by the width direction and the height direction of the electronic component is viewed, the radius of curvature of the curve is 100% or more and 200% or less of the radius of curvature of a circle inscribed in the WT cross section.

[0007] In addition, the conveying method of the present invention is a method for conveying the electronic component using the above-mentioned conveying device, in which a magnetic force is applied to the electronic component by the application unit, so that the internal electrodes of the electronic component are oriented in a predetermined direction, and the electronic component is conveyed by the conveying means in that state. Effect of the Invention

[0008] According to the present invention, it is possible to provide a transport device and a transport method capable of stabilizing the posture of an electronic component when transporting the electronic component. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view showing a main part of a conveying device according to a first embodiment of the present invention. [Diagram 2] 1 is a schematic plan view showing a main part of a transport device according to a first embodiment of the present invention. [Diagram 3] 1 is a schematic front view showing a main part of a conveying device according to a first embodiment of the present invention. [Figure 4]4 is a schematic front view showing a main part of the conveying device according to the first embodiment of the present invention, illustrating a state in which the electronic components have been moved from the state in FIG. 3 to a predetermined posture. [Diagram 5] FIG. 2 is a schematic perspective view of an electronic component. [Figure 6] 6 is a cross-sectional view taken along line AA in FIG. 5. [Figure 7] FIG. 6 is a schematic front view showing a main part of a conveying device according to a second embodiment of the present invention. [Figure 8] FIG. 11 is a schematic front view showing a main part of a conveying device according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

[0011] The conveying device 1 of the first embodiment is a device for conveying a rectangular parallelepiped electronic component 3 having an internal electrode 2 made of a ferromagnetic material. In this embodiment, the electronic component 3 is, for example, a ceramic electronic component shown in Figs. 5 and 6. The ceramic electronic component 3 has a rectangular parallelepiped ceramic body 4. The ceramic body 4 is formed of an appropriate ceramic material. Inside the ceramic body 4, the first internal electrode 2a and the second internal electrode 2b are arranged such that parts of the adjacent first internal electrode 2a and second internal electrode 2b face each other via a ceramic layer. The first internal electrode 2a and the second internal electrode 2b contain a ferromagnetic metal. Typically, the first internal electrode 2a and the second internal electrode 2b are an alloy mainly composed of Ni.

[0012] In this way, the ceramic body 4 is a hexahedron having a plurality of internal electrodes 2 stacked therein, a first main surface 5 and a second main surface 6 facing each other in the stacking direction of the internal electrodes 2, a first side surface 7 and a second side surface 8 facing each other in a width direction perpendicular to the stacking direction, and a first end surface 9 and a second end surface 10 facing each other in a length direction perpendicular to the stacking direction and the width direction. A first external electrode 11 connected to the first internal electrode 2a is formed on the first end surface 9 of the ceramic body 4. A second external electrode 12 connected to the second internal electrode 2b is formed on the second end surface 10 of the ceramic body 4. The first internal electrode 2a, the second internal electrode 2b, the first external electrode 11 and the second external electrode 12 are formed of an appropriate conductive material.

[0013] When manufacturing such a ceramic electronic component 3, first, a ceramic laminate 13 (FIG. 1) is formed. To form the ceramic laminate 13, a conductive paste for forming internal electrodes is printed in a predetermined pattern on ceramic green sheets by screen printing or the like to form a pattern of internal electrodes. Next, a plurality of ceramic green sheets on which the patterns of the internal electrodes have been formed are stacked to form a mother laminate. Then, a plurality of green ceramic laminates are cut out from the mother laminate. The cut-out green ceramic laminates are fired. As a result, a rectangular parallelepiped ceramic laminate 13 is formed.

[0014] Then, a conductive paste is applied to one longitudinal end surface of the ceramic laminate 13, thereby forming a first conductive paste layer on one longitudinal end surface of the ceramic laminate 13. After the formation of the first conductive paste layer, a conductive paste is applied to the other longitudinal end surface of the ceramic laminate 13, thereby forming a second conductive paste layer on the other longitudinal end surface of the ceramic laminate 13.

[0015] After the second conductive paste layer is formed, the ceramic laminate 13 on which the first conductive paste layer and the second conductive paste layer are formed is fired, thereby producing the ceramic electronic component 3. In the ceramic body 4, the corners between the first main surface 5 and the first side surface 7, the corners between the first main surface 5 and the second side surface 8, the corners between the second main surface 6 and the first side surface 7, and the corners between the second main surface 6 and the second side surface 8 are curved.

[0016] The conveying device 1 of the first embodiment conveys the electronic component 3 as described above. Here, the electronic component 3 includes an electronic component in an unfinished state. The conveying device 1 of the present embodiment conveys the ceramic laminate 13, which is an electronic component in an unfinished state. This rectangular parallelepiped ceramic laminate 13 is in a state before the ceramic body 4 is fired. Therefore, the first main surface 5 of the ceramic body 4 corresponds to the first main surface 14 of the ceramic laminate 13, the second main surface 6 of the ceramic body 4 corresponds to the second main surface 15 of the ceramic laminate 13, the first side surface 7 of the ceramic body 4 corresponds to the first side surface 16 of the ceramic laminate 13, the second side surface 8 of the ceramic body 4 corresponds to the second side surface 17 of the ceramic laminate 13, the first end surface 9 of the ceramic body 4 corresponds to the first end surface 18 of the ceramic laminate 13, and the second end surface 10 of the ceramic body 4 corresponds to the second end surface 19 of the ceramic laminate 13.

[0017] That is, as shown in FIG. 1, the ceramic laminate 13 is a hexahedron having a first main surface 14 and a second main surface 15 facing each other in the stacking direction of the internal electrodes, a first side surface 16 and a second side surface 17 facing each other in the width direction perpendicular to the stacking direction, and a first end surface 18 and a second end surface 19 facing each other in the length direction perpendicular to the stacking direction and the width direction. In the ceramic laminate 13, the corners between the first main surface 14 and the first side surface 16, the corners between the first main surface 14 and the second side surface 17, the corners between the second main surface 15 and the first side surface 16, and the corners between the second main surface 15 and the second side surface 17 are curved. In the ceramic laminate 13, the difference between the width dimension and the length dimension is 120% or more and 220% or less. This is the ratio of the length dimension to the width dimension. That is, it is calculated by (length dimension / width dimension)×100.

[0018] 1 to 4, the conveying device 1 of this embodiment includes a conveying section 21 having a groove-shaped conveying path 20, a conveying means for conveying the ceramic laminate 13 on the conveying path 20, an application section 23 for applying a magnetic force to the ceramic laminate 13 in the conveying path 20, and an air blowing means for blowing air in the conveying direction of the ceramic laminate 13 on the conveying path 20. Note that the conveying means and the air blowing means are omitted from the drawings.

[0019] The transport path 20 is a groove-like shape that is formed on the upper surface of the transport section 21 and opens upward. Specifically, the transport path 20 is a groove-like shape with a substantially V-shaped vertical cross section that is formed along the front-rear direction. Therefore, the transport direction of the ceramic laminate 13 is along the front-rear direction. Here, the transport direction is from the rear to the front as shown in Figs. 1 and 2.

[0020] The conveying path 20 has one side 25 and the other side 26 separated from each other on the left and right, and a bottom surface 27 located between the two side surfaces 25 and 26. The one side surface 25 extends downward toward the other side. The other side surface 26 extends downward toward the one side surface 25. In this manner, the two side surfaces 25 and 26 are inclined with respect to the horizontal direction so that the distance between them increases upward. The bottom surface 27 is a curved surface that bulges downward. Therefore, the bottom surface 27 is a curved surface that is recessed outward from the conveying path 20 in a vertical cross section viewed from the conveying direction. When the ceramic laminate 13 is cut at the center position in the length direction and a rectangular WT cross section defined by the width direction and height direction of the ceramic laminate 13 is viewed, the curvature radius of the curve of the bottom surface 27 of the conveying path 20 is 100% to 200% of the curvature radius of a circle inscribed in the WT cross section. Preferably, the ratio is 120% or more and 180% or less. The bottom surface 27 is flush with both side surfaces 25, and is smoothly continuous with both side surfaces 25, .

[0021] The conveying means is, for example, a vibration source that applies vibration to the conveying unit 21. The vibration source can move the ceramic laminate 13 in the conveying path 20 in the conveying direction by applying vibration to the conveying unit 21. In order to smoothly perform this movement, the conveying path 20 may be inclined downward in the conveying direction. In this embodiment, the vibration source is provided on the lower surface of the conveying unit 21. The installation position of the vibration source is not particularly limited.

[0022] The application unit 23 can generate a magnetic force. The application unit 23 is composed of, for example, a permanent magnet or an electromagnet. The application unit 23 is provided on the side of the transport path 20. In the illustrated example, the application unit 23 is provided on the left side of the transport path 20 and below the transport path 20. In this case, the application unit 23 is disposed at an incline so that the S pole side is above and to the right of the N pole side. As a result, the magnetic field lines are extended from the upper right to the lower left within the transport path 20.

[0023] The air blowing means is, for example, a fan, a compressor, a blower, etc. Air from the air blowing means is blown into the conveying path 20 through the nozzle 28. At this time, the air is blown in the conveying direction.

[0024] As shown in Fig. 1 and Fig. 2, the ceramic laminate 13 is transported in the transport path 20 with its length aligned along the transport direction, as described below. In this case, since the ceramic laminate 13 has a rectangular parallelepiped shape, the WT cross section, which is a vertical cross section viewed from the transport direction, has a rectangular shape as described above. Each corner of the rectangle in the WT cross section is curved as described above. In this embodiment, the radius of curvature of the curve of the bottom surface 27 of the transport path 20 is larger than the radius of curvature of the curve of the corners of the ceramic laminate 13. Also, in this embodiment, the radius of curvature of the curve of the bottom surface 27 of the transport path 20 is larger than the radius of curvature of a circle inscribed in the rectangular cross section of the ceramic laminate 13.

[0025] Next, a method for transporting the ceramic laminate 13 using the transport device 1 of this embodiment will be described. Here, a case will be described in which the transport device 1 is provided at a position where an appearance inspection of the ceramic laminate 13 is performed on a manufacturing line for electronic components 3.

[0026] When the ceramic laminate 13 is transported, first, the ceramic laminate 13 is moved in the transport direction in the transport path 20. The ceramic laminate 13 can be moved in the transport direction by activating a vibration source. The transport speed of the ceramic laminate 13 is, for example, 50 mm / s or more and 300 mm / s or less. When the ceramic laminate 13 is transported, air is blown in the transport direction by an air blowing means in the transport path 20. As described above, the application unit 23 is provided on the side of the transport path 20. Therefore, the ceramic laminate 13 can be brought into a predetermined posture by the application unit 23. Specifically, this is as follows.

[0027] 3, when the stacking direction of the internal electrodes of the ceramic laminate 13 moving along the transport path 20 is parallel to the direction of the magnetic field lines in the transport path 20, the ceramic laminate 13 rotates around an axis along the transport direction while moving in the transport direction, due to the action of the magnetic field lines, so that the stacking direction of the internal electrodes intersects with the direction of the magnetic field lines in the transport path 20. That is, as shown in FIG 4, the ceramic laminate 13 rotates while moving in the transport direction so that the surface direction of the internal electrodes is parallel to the extension direction of the magnetic field lines in the transport path 20.

[0028] On the other hand, when the stacking direction of the internal electrodes of the ceramic laminate 13 moving along the transport path 20 intersects with the direction of the magnetic field lines in the transport path 20, no rotation moment is generated due to the action of the magnetic field lines. Therefore, the ceramic laminate 13 is transported while maintaining a position in which the plane direction of the internal electrodes is parallel to the direction of the magnetic field lines in the transport path 20, as shown in FIG.

[0029] In this manner, in this embodiment, by applying magnetic field lines to the ceramic laminate 13 by the application unit 23, the internal electrode surfaces of the ceramic laminate 13 are oriented in a predetermined direction, and the ceramic laminate 13 can be transported in this state by the transport means. This allows the ceramic laminate 13 in the transport path 20 to be oriented correctly. Therefore, the ceramic laminate 13 moving in the transport path 20 can be held in a predetermined posture, and a plurality of ceramic laminates 13 sequentially discharged from the transport path 20 can be held in the same posture.

[0030] In this embodiment, the length of the application unit 23 in the conveying direction is 20 mm. The length of the application unit 23 in the conveying direction is not limited to the above length, and is preferably 5 mm or more and 35 mm or less. In this embodiment, the magnetic force of the application unit 23, which is a magnet, is preferably 3000 Gauss or more and 6000 Gauss or less. In this embodiment, the distance between the S-pole side surface of the application unit 23 and the first side surface 16 or the second side surface 17 of the ceramic laminate 13 is preferably 10 mm or more and 20 mm or less. When the distance is less than 10 mm, the ceramic laminate 13 is in a floating state in the conveying path 20. When the distance is 10 mm or more, the ceramic laminate 13 is in a contact state with the bottom surface 27 of the conveying path 20. In this embodiment, the length of the ceramic electronic component 3 is preferably 0.4 mm or more and 3.2 mm or less. Typically, when the ceramic electronic component 3 is a multilayer ceramic capacitor, the multilayer ceramic capacitor is of a 1005 size, a 0603 size, a 0402 size, a 0201 size, a 3225 size, or the like.

[0031] In this embodiment, an application unit 29, separate from the application unit 23 described above, is provided on the side of the transport path 20. The application unit 29 can generate a magnetic force. The application unit 29 is composed of, for example, a permanent magnet or an electromagnet. The application unit 29 is provided downstream of the application unit 23. In the illustrated example, the application unit 29 is provided on the right side of the transport path 20, above the transport path 20. In this case, the application unit 29 is disposed at an incline so that the S pole side is above and to the right of the N pole side. As a result, the magnetic field lines are extended from the upper right to the lower left within the transport path 20.

[0032] Therefore, the magnetic field lines from the application unit 29 act on the ceramic laminate 13 that has passed through the application unit 23. This is similar to the action of the magnetic field lines from the application unit 23. That is, the action of the magnetic field lines from the application unit 29 can orient the ceramic laminate 13 in the correct direction. As a result, the ceramic laminate 13 that has been placed in a predetermined position by the application unit 23 is transported reliably downstream while maintaining that position.

[0033] In this embodiment, the radius of curvature of the curve of bottom surface 27 of transport path 20 is 100% or more and 200% or less of the radius of curvature of a circle inscribed with the WT cross section of ceramic laminate 13. In addition, in this embodiment, the radius of curvature of the curve of bottom surface 27 of transport path 20 is greater than the radius of curvature of the curve of each corner of ceramic laminate 13. Therefore, compared to a case where the bottom surface of transport path 20 is not rounded, it is possible to make ceramic laminate 13 rotate more easily in transport path 20. This makes it possible to stabilize the posture of ceramic laminate 13 when it is transported.

[0034] Furthermore, in the case of this embodiment, when the ceramic laminate 13 is transported, air is blown onto the ceramic laminate 13 by the air blowing means. Therefore, according to this embodiment, it is possible to prevent the ceramic laminate 13 in the transport path 20 from rotating around an axis along the vertical direction (the direction perpendicular to the transport direction and the width direction of the transport path 20).

[0035] Next, a conveying device 1a according to a second embodiment will be described. In the second embodiment, the characteristic parts will be described, and the description of the matters described in the first embodiment will be omitted.

[0036] In the first embodiment, the transport path 20 is substantially V-shaped when viewed from the front, but in the second embodiment, as shown in FIG. 7, the transport path 20 is substantially U-shaped when viewed from the front. The transport path 20 is substantially U-shaped when viewed from the front. The transport path 20 has one side 30 and the other side 31 facing each other in the left-right direction, and a bottom surface 32 located between the side surfaces 30, 31. The bottom surface 32 is curved and bulges downward. Therefore, the bottom surface 32 is a curved surface that is recessed outward from the transport path 20 in a vertical cross section viewed from the transport direction. The radius of curvature of this curve is 100% or more and 200% or less of the radius of curvature of a circle inscribed with the WT cross section of the ceramic laminate 13. The bottom surface 32 is flush with the side surfaces 30, 31 and smoothly continues to the side surfaces 30, 31.

[0037] 1 and 2, the ceramic laminate 13 is transported through the transport path 20 as described above with its length aligned along the transport direction. In this case, since the ceramic laminate 13 has a rectangular parallelepiped shape, the WT cross section, which is a vertical cross section as viewed from the transport direction, has a rectangular shape as described above. Each corner of the rectangle in the WT cross section is curved as described above. In this embodiment, the radius of curvature of the curve of the bottom surface 32 of the transport path 20 is larger than the radius of curvature of the curve of the corners of the ceramic laminate 13. Also, in this embodiment, the radius of curvature of the curve of the bottom surface 32 of the transport path 20 is larger than the radius of curvature of a circle inscribed in the rectangular cross section of the ceramic laminate 13.

[0038] In this embodiment, the transport path 20 is generally U-shaped when viewed from the front, and therefore, according to this embodiment, the width of the transport path 20 is smaller than that of the first embodiment. As a result, especially when the length of the ceramic laminate 13 is short, the ceramic laminate 13 in the transport path 20 is less likely to rotate around an axis along the vertical direction (the direction perpendicular to the transport direction and the width direction of the transport path 20).

[0039] Next, a conveying device 1b according to a third embodiment will be described. In the third embodiment, the characteristic parts will be described, and the description of the matters described in the first embodiment will be omitted.

[0040] In the first embodiment, the transport path 20 is generally V-shaped when viewed from the front, but in the third embodiment, as shown in FIG. 8, the transport path 20 is generally semicircular when viewed from the front. In this embodiment, the transport path 20 is generally semicircular when viewed from the front, bulging downward. Therefore, the entire transport path 20 is a curved shape that is concave outwardly of the transport path 20 in a vertical cross section viewed from the transport direction. With this configuration, the radius of curvature of the curve of the bottom surface of the transport path 20 corresponds to the radius of curvature of the curve of the entire arc-shaped transport path 20. The radius of curvature of the curve of the bottom surface of the transport path 20 is 100% or more and 200% or less of the radius of curvature of a circle inscribed with the WT cross section of the ceramic laminate 13.

[0041] 1 and 2, the ceramic laminate 13 is transported in the transport path 20 as described above with its length aligned along the transport direction. In this case, since the ceramic laminate 13 has a rectangular parallelepiped shape, the WT cross section, which is a vertical cross section as viewed from the transport direction, has a rectangular shape as described above. Each corner of the rectangle in the WT cross section is curved as described above. In this embodiment, the radius of curvature of the curve of the corners of the ceramic laminate 13 is larger than the radius of curvature of the curve of the bottom surface of the transport path 20. Also, in this embodiment, the radius of curvature of the curve of the bottom surface of the transport path 20 is larger than the radius of curvature of a circle inscribed in the rectangular cross section of the ceramic laminate 13.

[0042] As shown in FIG. 8, the present embodiment includes a cover 33 that covers the upper side of the conveying path 20. The cover 33 is provided on the upper surface of the conveying section 21. The cover 33 is made of resin. The cover 33 may be transparent. In a vertical cross section viewed from the conveying direction, the cover 33 has an arc shape that bulges outward above the conveying path 20. In the illustrated example, the cover 33 has a substantially semicircular arc shape in a vertical cross section viewed from the conveying direction. In this case, typically, the diameter of the semicircular conveying path 20 and the diameter of the inner surface of the semicircular cover 33 are the same. The radius of the arc of the inner surface of the cover 33 is 100% or more and 200% or less of the radius of curvature of a circle inscribed with the WT cross section of the ceramic laminate 13.

[0043] 1 and 2, the ceramic laminate 13 is transported in the transport path 20 as described above with its length aligned along the transport direction. In this case, since the ceramic laminate 13 has a rectangular parallelepiped shape, the WT cross section, which is a vertical cross section viewed from the transport direction, has a rectangular shape as described above. In this embodiment, the radius of the arc of the inner surface of the cover 33 is larger than the radius of a circle inscribed in the rectangular WT cross section of the ceramic laminate 13. In addition, in this embodiment, the diameter of the arc of the inner surface of the cover 33 is equal to or smaller than the diagonal dimensions of the first main surface 14 and the second main surface 15 of the ceramic laminate 13, or equal to or smaller than the diagonal dimensions of the first side surface 16 and the second side surface 17 of the ceramic laminate 13.

[0044] In this embodiment, a cover 33 is provided to cover the transport path 20. In this case, when magnetic field lines are applied to the ceramic laminate 13 in the transport path 20, at least a part of the ceramic laminate 13 rises up and comes into contact with the cover 33, causing the ceramic laminate 13 to rotate. Therefore, the ceramic laminate 13 can be smoothly rotated.

[0045] The present invention is not limited to the above-described embodiments, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention.

[0046] For example, in each of the above embodiments, the electronic components 3 to be transported are ceramic laminates 13, which are unfinished electronic components, but they may be finished products. In this case, the difference between the width dimension of the electronic components 3 and the length dimension of the electronic components 3 is 120% or more and 220% or less. This is the ratio of the length dimension to the width dimension. In other words, it is calculated by (length dimension / width dimension)×100.

[0047] In the first and second embodiments, a cover may be provided to cover the transport path 20. In this case, the cover has an appropriate shape in a vertical cross section viewed from the transport direction.

[0048] Furthermore, in each of the above embodiments, the conveying devices 1, 1a, 1b are provided at a location on the production line where visual inspection is performed, but this is not limited to this and may be used, for example, when conveying to a location where visual inspection is performed. [Explanation of symbols]

[0049] 1. Transport device 2 Internal electrode 3. Electronic Components 5 First main surface 6 Second main surface 7. First aspect 8. The Second Aspect 9 First end face 10 Second end face 13 Ceramic laminate 14 First main surface 15 Second main surface 16 First aspect 17 The second aspect 18 First end face 19 Second end face 20 Transport Path 21 Conveyor 23 Applicator 27 Bottom 32 Bottom 33 Cover

Claims

1. A conveying device for conveying a rectangular parallelepiped electronic component having an internal electrode made of a ferromagnetic material, comprising: A conveying section having a groove-shaped conveying path; a conveying means for conveying the electronic components along the conveying path; an application unit that applies a magnetic force to the electronic components in the transport path using a magnet; an air blowing means for blowing air in the conveying direction from an opening of a nozzle in the conveying path, a bottom surface of the transport path is curved outwardly of the transport path in a vertical cross section viewed from the transport direction; the magnet is provided on one side of the transport path and below the transport path, and is provided on the other side of the transport path and above the transport path, when the electronic component is cut at a center position in a longitudinal direction and a rectangular WT cross section defined by a width direction of the electronic component and a height direction of the electronic component is viewed, a radius of curvature of the curve is 100% or more and 200% or less of a radius of curvature of a circle inscribed in the WT cross section, The electronic component has curved corners of the rectangle in the WT cross section, A conveying device, wherein the radius of curvature of the curve of the conveying path is larger than the radius of curvature of the curve of the electronic component.

2. A cover for covering the conveying path is provided, the cover has an arc shape that bulges outward from the conveying path in a longitudinal section seen from the conveying direction, The conveying device according to claim 1 , wherein the radius of the arc of the cover is 100% or more and 200% or less of the radius of curvature of a circle inscribed with the WT cross section.

3. The conveying device according to claim 2 , wherein a radius of the arc of the cover is larger than a radius of a circle inscribed with the WT cross section of the electronic component.

4. 4. The conveying device according to claim 1, wherein the conveying speed of the electronic components is 50 mm / s or more and 300 mm / s or less.

5. the electronic component has a plurality of the internal electrodes stacked, and has a first main surface and a second main surface opposed to each other in a stacking direction, a first side surface and a second side surface opposed to each other in a width direction perpendicular to the stacking direction, and a first end surface and a second end surface opposed to each other in a length direction perpendicular to the stacking direction and the width direction, The conveying device according to claim 1 , wherein a difference between the width dimension and the length dimension is 120% or more and 220% or less.

6. A method for transporting electronic components using the transport device according to any one of claims 1 to 5, comprising the steps of: a magnetic force applied to the electronic component by the application unit, so that the internal electrodes of the electronic component are oriented in a predetermined direction, and the electronic component is transported by the transport means in this state.

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