Direction alignment device

Abstract

Provided is a direction alignment device capable of aligning the orientation of a laminate such that the lamination direction of the laminate becomes a direction perpendicular to the XY plane of a jig. The direction alignment device (100) is characterized by being provided with: a vibration plate (110) having a plane including an X direction and a Y direction as a main surface (112) and having a recess (111) opening in the main surface (112); and a magnet (120) in which a magnetic pole is disposed in a Z direction perpendicular to the X direction and the Y direction, the magnet (120) being moved, the orientation of the laminated body (10) in which the internal electrode layer is embedded and housed in the recess (111) of the vibration plate (110) being aligned by the magnetic force of the magnet (120), and the axis in the lamination direction (T) of the laminated body (10) being offset from the axis (Z) in which the polarity in the magnet (120) faces.

Description

Technical Field

[0001] The present invention relates to a direction alignment device. Background Art

[0002] Patent Document 1 describes a technique for aligning the stacking direction of a stacked body with internal electrodes. In this technique, in order to perform some processing on a surface perpendicular to the stacking direction, mainly the side surface, the stacked body is vibrated into a fixture and then the direction is changed using a magnet so that the side surface faces the Z-axis direction.

[0003] Prior Art Literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-175902 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] In the technology of Patent Document 1, the orientation of the stacked bodies can be made consistent so that the stacking direction of the stacked bodies is the same direction as the XY plane of the fixture. However, it is not possible to make the orientation of the stacked bodies consistent so that the stacking direction of the stacked bodies is perpendicular to the XY plane of the fixture (the same direction as the Z-axis direction of the fixture).

[0008] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a direction alignment device capable of aligning the orientation of stacked bodies so that the stacking direction of the stacked bodies becomes a direction perpendicular to the XY plane of a jig.

[0009] Technical solutions to solve problems

[0010] The directional alignment device of the present invention is characterized in that it comprises: a vibration plate having a plane including an X direction and a Y direction as a main surface and having a recessed portion opening on the main surface; and a magnet having a magnetic pole arranged in a Z direction perpendicular to the X direction and the Y direction, so that the magnet is moved, and the orientation of a stacked body embedded with an internal electrode layer housed in the recessed portion of the vibration plate is aligned through the magnetic force of the magnet, and the axis of the stacking direction of the stacked body deviates from the axis toward which the polarity in the magnet is directed.

[0011] Effects of the Invention

[0012] According to the present invention, it is possible to provide a direction alignment device capable of aligning the orientations of stacked bodies so that the stacking direction of the stacked bodies becomes a direction perpendicular to the XY plane of a jig. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view schematically showing an example of a laminated body.

[0014] Figure 2 FIG. 1 is a perspective view schematically showing an example of a multilayer ceramic capacitor.

[0015] Figure 3 yes Figure 2 LT cross-sectional view (AA line cross-sectional view) of the multilayer ceramic capacitor shown.

[0016] Figure 4 yes Figure 2 WT cross-sectional view (BB line cross-sectional view) of the multilayer ceramic capacitor shown.

[0017] Figure 5 This is a perspective view schematically showing an example of a vibration input plate constituting the direction alignment device.

[0018] Figure 6 It is a perspective view schematically showing a state where the stacked body is accommodated in the recessed portion.

[0019] Figure 7 It is a perspective view schematically showing the entirety of an example of a direction alignment device.

[0020] Fig. 8A This is a process diagram schematically showing how the orientation of the stacked body is changed by magnetic force.

[0021] Figure 8B This is a process diagram schematically showing how the orientation of the stacked body is changed by magnetic force.

[0022] Figure 8C This is a process diagram schematically showing how the orientation of the stacked body is changed by magnetic force.

[0023] Fig. 9 It is a top view schematically showing an example of the moving direction of the magnet.

[0024] Fig.10 It is a plan view schematically showing magnetic force lines directed toward the corners of the recessed portion.

[0025] Fig.11 It is a side view schematically showing a process of mounting a multilayer ceramic capacitor having external electrodes provided on a multilayer body on a substrate-type terminal.

[0026] Description of Reference Numerals

[0027] 1. 1M, 1S multilayer ceramic capacitors (multilayer);

[0028] 10 laminated bodies;

[0029] 10a 1st main side;

[0030] 10b 2nd main side;

[0031] 10c first end surface;

[0032] 10d: second end surface;

[0033] 10e lateral 1;

[0034] 10f 2nd side;

[0035] 16 1st external electrode;

[0036] 17 2nd external electrode;

[0037] 20 dielectric layer;

[0038] 35 first internal electrode layer;

[0039] 36 second internal electrode layer;

[0040] 100 Direction alignment device;

[0041] 110 vibration into the plate;

[0042] 111 recess;

[0043] 111a Corner of recess;

[0044] 112 Main side;

[0045] 113 opening;

[0046] 120 magnets;

[0047] 120N N pole;

[0048] 120S S pole;

[0049] 130 hood;

[0050] 200 substrate type terminals;

[0051] 221 Insulating substrate;

[0052] 221b a second main surface of the insulating substrate;

[0053] 223 Install the electrodes. DETAILED DESCRIPTION

[0054] Hereinafter, the direction alignment device of the present invention will be described.

[0055] However, the present invention is not limited to the following configurations, and can be applied with appropriate changes within the scope of the gist of the present invention. In addition, a configuration obtained by combining two or more of the preferred configurations described below is also the present invention.

[0056] The laminate that is an object to be controlled in its posture using the direction alignment device of the present invention is not particularly limited, but can be suitably used for controlling the posture of a laminate that is an electronic component as a chip component. Examples of the electronic component include a multilayer ceramic capacitor, a multilayer coil, and the like.

[0057] In addition, since electronic components such as the above-mentioned multilayer ceramic capacitor and multilayer coil include a laminate, the electronic component including a laminate is also included in the laminate that is an object to be controlled in its posture using the direction alignment device of the present invention.

[0058] Before the description of the direction alignment device of the present invention, as an example of the laminate that is an object to be controlled in its posture, the laminate constituting the multilayer ceramic capacitor will be described. In addition, the multilayer ceramic capacitor formed by forming external electrodes on the laminate will be described.

[0059] Figure 1 is a perspective view schematically showing an example of the laminate, Figure 2 is a perspective view schematically showing an example of the multilayer ceramic capacitor. In Figure 1 the multilayer ceramic capacitor shown is obtained by forming external electrodes on the laminate shown in Figure 2 The dimensions in the length direction, width direction, and stacking direction of the laminate and the multilayer ceramic capacitor are respectively shown by double-headed arrows L, W, and T. The stacking direction T is also the thickness direction of the laminate and the multilayer ceramic capacitor.

[0060] When the dimension in the stacking direction of the laminate or the multilayer ceramic capacitor is T, the dimension in the width direction is W, and the dimension in the length direction is L, it is preferably T < L and W < L. It may be W = L, or it may be W ≠ L.

[0061] Figure 3 is Figure 2 an LT cross-sectional view (cross-sectional view taken along line A-A) of the multilayer ceramic capacitor shown in Figure 4 is Figure 2 a WT cross-sectional view (cross-sectional view taken along line B-B) of the multilayer ceramic capacitor shown in

[0062] Figure 1 The laminate 10 shown in

[0063] The laminate preferably has rounded corners and ridges. The corners are where three surfaces of the laminate intersect, and the ridges are where two surfaces of the laminate intersect.

[0064] As a dielectric material constituting the dielectric layer 20, for example, BaTiO 3 、CaTiO 3 、SrTiO 3 , or CaZrO 3 In addition, a material in which a component such as a Mn compound, an Fe compound, a Cr compound, a Co compound, or a Ni compound is added to these components in a smaller amount than the main component may be used.

[0065] The dielectric layer includes an outer layer portion and an inner layer portion. The outer layer portion is located on both main surface sides of the laminate and is a dielectric layer located between the main surface and the internal electrode layer closest to the main surface. The area sandwiched by the two outer layer portions is the inner layer portion.

[0066] The thickness of the dielectric layer is preferably 0.4 μm or more and 2.0 μm or less.

[0067] The internal electrode layer preferably contains a ferromagnetic material.

[0068] As the ferromagnetic material, nickel (Ni) can be mentioned. When the internal electrode layer contains the ferromagnetic material, the rotation of the laminated body by magnetic force becomes easy.

[0069] The internal electrode layer may further include dielectric particles having the same composition system as that of the dielectric ceramic included in the dielectric layer.

[0070] The thickness of the internal electrode layer is preferably 0.4 μm or more and 2.0 μm or less.

[0071] The number of internal electrode layers laminated in the laminate is preferably 204 or more and 510 or less.

[0072] The plurality of internal electrode layers include a first internal electrode layer 35 and a second internal electrode layer 36 .

[0073] The first internal electrode layer 35 and the second internal electrode layer 36 include opposing electrode portions facing each other and extraction electrode portions extending from the opposing electrode portions to the end surface of the laminate.

[0074] like Figure 3 As shown, the first internal electrode layer 35 is led out to the first end surface 10c of the laminate 10 and connected to the first external electrode 16. The second internal electrode layer 36 is led out to the second end surface 10d of the laminate 10 and connected to the second external electrode 17.

[0075] In the present embodiment, in each opposing electrode portion, internal electrode layers are opposed to each other via a dielectric layer to form a capacitor, thereby functioning as a multilayer ceramic capacitor.

[0076] The laminated body may be unsintered or sintered at the time when it passes through the direction aligning device to align its orientation.

[0077] The size of the laminate is not particularly limited, but preferably the width (W direction dimension) is 0.33 mm to 1.45 mm, the thickness (T direction dimension) is 0.33 mm to 1.45 mm, and the length (L direction dimension) is 0.63 mm to 2.20 mm.

[0078] In the multilayer ceramic capacitor 1, a first external electrode 16 is connected to a first end surface 10c of the multilayer body 10, and a second external electrode 17 is connected to a second end surface 10d. The first external electrode 16 and the second external electrode 17 are end surface external electrodes. The end surface external electrodes are formed on the end surface of the multilayer body and extend from the end surface to the side surface and the main surface.

[0079] The external electrode may include a base electrode layer and a plating layer disposed on the base electrode layer.

[0080] The base electrode layer may include at least one layer selected from the group consisting of a sintered layer, a resin layer, and a thin film layer.

[0081] The sintered layer is a layer containing glass and metal. The glass contains Si, and as the metal, it is preferred to contain at least one selected from the group consisting of Cu, Ni, Ag, Pd, Ag-Pd alloy, and Au, etc. In addition, the sintered layer may also be a multilayer.

[0082] The sintered layer is formed by applying a conductive paste containing glass and metal to a laminate and sintering the paste, and may be a layer sintered simultaneously with the internal electrode layer or may be a layer sintered after the internal electrode layer is sintered.

[0083] The resin layer may also be a resin layer containing conductive particles and a thermosetting resin. When forming the resin layer, the resin layer may be formed directly on the laminate without forming a sintered layer. In addition, the resin layer may also be multilayered.

[0084] The thin film layer is formed by a thin film forming method such as sputtering or vapor deposition, and is a layer of 1 μm or less in which metal particles are deposited.

[0085] The plating layer preferably includes at least one selected from, for example, Cu, Ni, Sn, Ag, Pd, an Ag-Pd alloy, and AuNi.

[0086] The plating layer may also be a multilayer. Preferably, it is a two-layer structure of a Ni plating layer and a Sn plating layer. The Ni plating layer can prevent the base electrode layer from being corroded by the solder when the electronic components are installed. The Sn plating layer can improve the wettability of the solder when the electronic components are installed, thereby making it easy to install the electronic components.

[0087] In addition, the laminated body to be aligned in the direction alignment device of the present invention is not limited to the laminated body and laminated ceramic capacitor in the manner described above, and may be, for example, a through-type laminated body in which the internal electrode layer is further extended to the side. In the laminated ceramic capacitor including the through-type laminated body, external electrodes are also formed on the side of the laminated body.

[0088] Next, an embodiment of the direction alignment device of the present invention will be described.

[0089] Figure 5 This is a perspective view schematically showing an example of a vibration input plate constituting the direction alignment device.

[0090] exist Figure 5 , the vibration plate 110 is shown, and the X direction, Y direction, and Z direction of the vibration plate are shown. The vibration plate 110 is provided with a recess 111. The plane on the upper surface of the vibration plate 110 and including the X direction and the Y direction is set as the main surface 112, and the recess 111 is opened in the main surface 112. The portion of the recess 111 opened in the main surface 112 is set as the opening 113. The recess 111 is a bottomed hole having the opening 113. The bottom surface of the recess 111 is a part of the vibration plate 110.

[0091] The vibration input plate 110 has a plurality of recesses 111 arranged in a matrix (lattice) shape. The depth of the recesses is preferably greater than the width dimension or thickness dimension of the laminate.

[0092] Preferably, the opening 113 of the recess 111 is a rectangular shape for rotating the stack, and the length in the short side direction is greater than the length of the diagonal line formed by the ridgeline extending in the stacking direction of the stack and the ridgeline extending in the width direction ( Figure 4 The length indicated by the double-headed arrow d) is larger.

[0093] The material of the vibration plate 110 is preferably a material that is not affected by the magnet or a material that is not easily affected by the magnet. The material of the vibration plate 110 is preferably a non-magnetic material, and preferably a resin material.

[0094] The vibration plate 110 is provided on a vibrator (vibration imparting device) etc. A plurality of stacked bodies are placed on the vibration plate 110 , and the stacked bodies are accommodated in the recessed portion 111 of the vibration plate 110 by imparting vibration and inclination.

[0095] Figure 6This is a perspective view schematically showing a state where a laminated ceramic capacitor as a laminated body is accommodated in a recess. In order to show the laminated ceramic capacitor, the vibration input plate is set as a perspective view. In addition, in order to show the stacking direction of the laminated body, the internal electrode layer is shown through the external electrode.

[0096] exist Figure 6 , the state in which the orientations of the multilayer ceramic capacitors 1 accommodated in the recess 111 are inconsistent is shown. In the recess 111, multilayer ceramic capacitors 1M whose stacking direction is the same as the Z direction and multilayer ceramic capacitors 1S whose stacking direction is the same as the X direction are mixed.

[0097] The direction alignment device of the present invention includes a vibration plate and a magnet.

[0098] Figure 7 It is a perspective view schematically showing the entirety of an example of a direction alignment device.

[0099] Figure 7 The illustrated direction alignment device 100 includes a vibration plate 110 and a magnet 120 .

[0100] exist Figure 7 , a state is shown in which the multilayer ceramic capacitor 1M and the multilayer ceramic capacitor 1S are accommodated in the recess 111 of the vibration-injecting plate 110 , and a cover 130 is arranged to cover the recess 111 .

[0101] The magnet 120 has magnetic poles arranged in the Z direction perpendicular to the X and Y directions. With this arrangement of magnetic poles, the axis of polarity in the magnet is in the Z direction. The N pole 120N faces the main surface 112 of the vibration plate 110 , and the S pole 120S is located on the opposite surface of the vibration plate 110 .

[0102] The arrangement of the N pole and the S pole may be reversed. The S pole 120S may face the main surface 112 of the vibration plate 110 , and the N pole 120N may be located on the opposite surface to the vibration plate 110 .

[0103] The shape of the magnet is not particularly limited, but is preferably a circular shape (a disk-shaped magnet) when viewed in plan view on a plane including the X direction and the Y direction.

[0104] The magnets can be permanent magnets or electromagnets.

[0105] The material of the magnet is not particularly limited, but a neodymium magnet is preferred.

[0106] In addition, the magnetic force of the magnet is preferably not less than 0.13 T and not more than 4 T. The strength of the magnetic force of the magnet can be measured by a Tesla meter.

[0107] When the magnet 120 is moved, the orientation of the multilayer ceramic capacitor 1 , which is a multilayer body in which the internal electrode layers are buried and is housed in the recess 111 of the vibration plate 110 , can be aligned by the magnetic force of the magnet 120 .

[0108] In the row direction or column direction, a magnet is arranged in an area away from an area where the concave portion of the stacked body whose orientation is to be aligned is arranged, and the orientation of the stacked body is continuously aligned by moving the magnet in the row direction or column direction, so that the stacking direction of the stacked body becomes a direction (Z direction) perpendicular to the XY plane of the vibration input plate. In addition, for a stacked body whose stacking direction is a direction (Z direction) perpendicular to the XY plane of the vibration input plate, its orientation is maintained.

[0109] In the direction alignment device of the present invention, the stacked body to be aligned in direction is a stacked body whose stacking direction axis deviates from the axis (Z direction) to which the polarity in the magnet is directed. As an example, a stacked body whose stacking direction is in the XY plane. The stacking direction of the stacked body to be aligned in direction may be aligned with the X direction or with the Y direction. In addition, it may not be aligned with either the X direction or the Y direction, and may be tilted at a given angle relative to the X direction or the Y direction.

[0110] Fig. 8A , Figure 8B as well as Figure 8C This is a process diagram schematically showing how the orientation of the stack is changed by magnetic force. Fig. 8A , Figure 8B as well as Figure 8C The direction of the magnetic field lines in FIG. 1 and the double-dotted lines indicate the magnetic field lines.

[0111] Since the magnet 120 has magnetic poles arranged in the Z direction perpendicular to the X direction and the Y direction, the direction of the magnetic lines of force in the concave portion near the region where the magnet 120 passes is in the X direction (or the Y direction).

[0112] Magnet Press Fig. 8A , Figure 8B , Figure 8C The moving direction of the magnet is from the front of the paper to the depth, or from the depth of the paper to the front, that is, the +Y direction or the -Y direction.

[0113] exist Fig. 8A , a state in which a multilayer ceramic capacitor 1S having a stacking direction that is the same as the X direction is arranged in a recess 111 of a vibration-injecting plate 110 is shown.

[0114] The direction of the magnetic force lines in the recess 111 is from left to right (X direction). If the magnet 120 passes near the multilayer ceramic capacitor 1S along with such magnetic force lines, Figure 8B as well as Figure 8C As shown in FIG. 1 , the stack rotates so that the orientation of the internal electrode layers becomes parallel to the orientation of the magnetic field lines. As a result, Figure 8C As shown, the multilayer ceramic capacitor 1 in the recess 111 becomes a multilayer ceramic capacitor 1M in which the stacking direction is the same as the Z direction, and the orientation of the stacked bodies is uniform.

[0115] In addition, a cover 130 covering the recessed portion 111 is provided on the main surface 112 of the vibration-input plate 110 so that the laminated body is not held by the magnet 120 .

[0116] The thickness of the cover 130 is not particularly limited, but is preferably a thickness that allows the magnetic force generated by the magnet 120 to penetrate. For example, it can be set to be greater than 0.1 mm and less than 20 mm. In addition, the cover 130 may be warped depending on the material, so in order to ensure rigidity, it is more preferably greater than 5 mm.

[0117] In order to allow the magnetic force generated by the magnet 120 to pass through, the material of the cover 130 is preferably a material other than metal, which is a ferromagnetic body, and preferably a resin.

[0118] Fig. 9 It is a top view schematically showing an example of the moving direction of the magnet.

[0119] exist Fig. 9 The arrows in the figure show the direction of movement of the magnet. In the figure, the magnet 120 moves in the -Y direction, then slightly moves in the -X direction, then moves in the +Y direction, then slightly moves in the -X direction, and then moves in the -Y direction again. That is, it can be said that the movement in the long side direction (Y direction) of the rectangular top view shape of the concave portion of the vibration input plate and the movement in the short side direction (X direction) of the above-mentioned rectangle are alternately performed.

[0120] Here, the direction in which the magnet moves is defined as the positive direction, and the direction in which the magnet moves back is defined as the negative direction. Fig. 9 The +X direction and -X direction of the X coordinate and the +Y direction and -Y direction of the Y coordinate in the above are different concepts.

[0121] For example, Fig. 9 The magnet 120 at the position shown moves toward the -Y direction, in which case the positive direction is the -Y direction and the negative direction is the +Y direction. Fig. 9 When the middle magnet 120 reaches the lower end position in the figure and moves in the -X direction, the positive direction is the -X direction and the negative direction is the +X direction.

[0122] Then, the magnet is moved in the positive direction of the X direction or the positive direction of the Y direction relative to the main surface of the vibration plate, so that the orientation of the stacked bodies arranged on the negative direction side is aligned.

[0123] The magnet is preferably scanned in a unidirectional manner, and is not preferably scanned multiple times in a reciprocating manner at the same position. If the magnet is reciprocated, the stacked body may rotate at an unintended position.

[0124] Furthermore, the moving speed of the magnet is preferably 50 mm / s or more and 1000 mm / s or less.

[0125] In the alignment device of the present invention, the shape of the recessed portion in a plan view is a rectangle, and the magnetic lines of force generated by the magnet are preferably directed toward the corners of the rectangle.

[0126] Fig.10 It is a plan view schematically showing magnetic force lines directed toward the corners of the recessed portion.

[0127] exist Fig.10 The multilayer ceramic capacitor 1S is accommodated in the recessed portion 111 shown at the right end in FIG. The recessed portion 111 has a rectangular shape in a plan view. Fig.10 The magnet 120 shown is in the shape of a disk, and magnetic lines of force extend radially from the center of the disk. The magnetic lines of force are directed toward the corners 111a of the rectangle in the shape of the concave portion 111 when viewed from above. Fig.10 The double-dashed arrows in FIG. 1 show the directions of the magnetic field lines from the magnet 120 .

[0128] If the magnetic force lines extend in this direction and act on the multilayer ceramic capacitor 1S in the recess 111, the position of the multilayer ceramic capacitor 1S in the recess 111 becomes tilted and the posture becomes disrupted. Since the posture of the multilayer ceramic capacitor 1S is disrupted, it becomes easy for the multilayer ceramic capacitor 1S to rotate in the recess 111, and the direction of the multilayer ceramic capacitor 1 becomes easy to align.

[0129] Furthermore, since the position of the laminate (laminated ceramic capacitor) is movable within the recess, the magnetic lines of force generated by the magnet are preferably directed toward the corners of the rectangle constituting the upper surface when the rectangular parallelepiped constituting the laminate is viewed from above.

[0130] The laminated body whose orientation is aligned by the direction alignment device is mounted on a mounting object such as a substrate after external electrodes are formed. Hereinafter, an example in which a laminated ceramic capacitor is mounted on a substrate-type terminal will be described.

[0131] Fig.11 It is a side view schematically showing a process of mounting a multilayer ceramic capacitor having external electrodes provided on a multilayer body on a substrate-type terminal.

[0132] exist Fig.11 , a side view of the multilayer ceramic capacitor 1 as viewed from the second external electrode 17 side is shown.

[0133] exist Fig.11 FIG. 2 shows a process of mounting the multilayer ceramic capacitor 1 on the substrate-type terminal 200. Fig.11 2 shows a downward arrow which is a direction in which the multilayer ceramic capacitor 1 is mounted on the substrate-type terminal 200 .

[0134] The substrate-type terminal 200 includes an insulating substrate 221 , and the multilayer ceramic capacitor 1 is mounted on the second main surface 221 b side of the insulating substrate 221 .

[0135] The solder paste is applied to the mounting electrode 223 of the substrate-type terminal 200 by, for example, screen printing.

[0136] Next, the multilayer ceramic capacitor 1 is placed on the substrate-type terminal 200 so that the solder paste adheres to the first external electrode 16 (at the Fig.11 The multilayer ceramic capacitor 1 is mounted on the substrate type terminal 200 by soldering the melted solder paste to solidify through the soldering.

[0137] exist Fig.11 , the dotted line in the second external electrode 17 indicates the orientation of the internal electrode layer in the mounted multilayer ceramic capacitor 1. The stacking direction of the internal electrode layer is a direction (Z direction) perpendicular to the main surface of the substrate-type terminal 200, and the main surface of the substrate-type terminal 200 and the main surface of the internal electrode layer are both planes including the X direction and the Y direction.

[0138] As described above, the orientation of the stacked bodies can be aligned by the orientation alignment device so that the stacking direction becomes the same as the Z direction, so that the orientation of the internal electrode layers of the laminated ceramic capacitor after mounting can be adjusted to Fig.11 Direction shown.

[0139] The orientation of the stacked bodies may be aligned by an alignment device so that the stacking direction becomes the same as the Z direction, and the stacked ceramic capacitor may be mounted on the substrate-type terminal while maintaining the orientation.

[0140] If the main surface of the substrate-type terminal and the main surface of the internal electrode layer are both planes including the X direction and the Y direction and their orientations are consistent, the vibration caused by the piezoelectric effect is not easily transmitted, and the audible sound (so-called "chirping") generated by the vibration propagation can be reduced.

[0141] An example of the process of manufacturing a multilayer ceramic capacitor as an electronic component and mounting the multilayer ceramic capacitor on a substrate-type terminal is summarized as follows.

[0142] 1. Form a ceramic green sheet that will become a dielectric layer.

[0143] 2. An internal electrode pattern to become an internal electrode layer is printed on a ceramic green sheet.

[0144] 3. The ceramic green sheets with the internal electrode layers printed thereon are stacked to obtain a laminated body. This is usually a large-sized laminated body (mother block) with patterns of many electronic components printed thereon.

[0145] 4. The mother block is singulated to obtain a plurality of laminated bodies.

[0146] 5. A process of applying and drying a conductive paste for forming external electrodes on the end faces and side faces of the laminate is performed to form external electrodes as a laminated ceramic capacitor.

[0147] 6. Use a vibrating device to vibrate and accommodate the multilayer ceramic capacitor in the recessed portion of the vibrating plate of the alignment device.

[0148] 7. Place a cover covering the opening of the recessed portion.

[0149] 8. Place a magnet having magnetic poles in the Z direction above the cover, and place a magnet in an area away from the area of ​​the recess containing the stacked ceramic capacitor whose orientation is to be aligned, and move the magnet in the row direction or column direction to align the orientation of the stacked ceramic capacitor.

[0150] 9. Pick up the multilayer ceramic capacitors from the vibration input plate and mount them sequentially on the assembly substrate of the substrate type terminal.

[0151] In this specification, the following contents are disclosed.

[0152] <1>

[0153] A direction alignment device, characterized by comprising:

[0154] A vibration input plate having a plane including the X direction and the Y direction as a main surface and having a concave portion opened on the main surface; and

[0155] The magnet has magnetic poles arranged in a Z direction perpendicular to the X direction and the Y direction,

[0156] The magnet is moved to align the orientation of the laminated body in which the internal electrode layer is embedded and accommodated in the recess of the vibration plate by the magnetic force of the magnet.

[0157] The axis of the stacking direction of the stacked body is offset from the axis in which the polarity is oriented in the magnet.

[0158] <2>

[0159] according to <1> In the alignment device described above, the magnet is moved relative to the main surface in the positive direction of the X direction or the positive direction of the Y direction to align the orientations of the stacked bodies disposed on the negative direction side.

[0160] <3>

[0161] according to <1> or <2> The described direction alignment device, wherein:

[0162] The shape of the recessed portion when viewed from above is a rectangle.

[0163] The magnetic lines of force generated from the magnets are directed toward the corners of the rectangle.

[0164] <4>

[0165] according to <1> ~ <3> A direction alignment device as described in any one of the above, wherein the magnet is circular when viewed from above on the plane.

[0166] <5>

[0167] according to <1> ~ <4> The direction alignment device described in any one of the above, wherein the moving speed of the magnet is greater than or equal to 50 mm / s and less than or equal to 1000 mm / s.

[0168] <6>

[0169] according to <1> ~ <5> The direction alignment device described in any one of the above, wherein the magnetic force of the magnet is greater than 0.13T and less than 4T.

[0170] <7>

[0171] according to <1> ~ <6> The direction alignment device described in any one of the above, wherein the stacked body is a stacked ceramic capacitor having a plurality of internal electrode layers containing Ni as a ferromagnetic material.

[0172] Furthermore, in this specification, a method for aligning a stacked body using the aligning device of the present invention is described.

[0173] The method for aligning the direction of a stacked body described in this specification uses the aligning device of the present invention to align the directions of the stacked bodies in which the internal electrode layers are buried, wherein the following steps are performed:

[0174] The laminate is accommodated by vibrating the laminate in a concave portion of a vibrating plate having a plane including the X direction and the Y direction as a main surface and having a concave portion opened on the main surface; and

[0175] In an area away from the area of ​​the recessed portion that accommodates the stacked body whose orientation is to be aligned, a magnet having a magnetic pole arranged in the Z direction perpendicular to the X direction and the Y direction is arranged, and the magnet is moved to align the orientation of the stacked body, whose stacking direction deviates from the Z direction and is accommodated in the recessed portion of the vibration input plate, with the Z direction.

Claims

1. A direction alignment device, characterized in that: have: A vibration input plate having a plane including the X direction and the Y direction as a main surface and having a concave portion opened on the main surface; and The magnet has magnetic poles arranged in a Z direction perpendicular to the X direction and the Y direction, The magnet is moved to align the orientation of the laminated body in which the internal electrode layer is embedded and accommodated in the recess of the vibration plate by the magnetic force of the magnet. The axis of the stacking direction of the stacked body is offset from the axis in which the polarity is oriented in the magnet.

2. The direction alignment device according to claim 1, wherein: The magnet moves in the positive direction of the X direction or the positive direction of the Y direction relative to the main surface to align the orientation of the stacked bodies disposed on the negative direction side.

3. The direction alignment device according to claim 1 or 2, wherein: The shape of the recessed portion when viewed from above is a rectangle. The magnetic lines of force generated from the magnets are directed toward the corners of the rectangle.

4. The direction alignment device according to any one of claims 1 to 3, wherein: The magnet has a circular shape when viewed from above on the plane.

5. The direction alignment device according to any one of claims 1 to 4, wherein: The moving speed of the magnet is greater than or equal to 50 mm / s and less than or equal to 1000 mm / s.

6. The direction alignment device according to any one of claims 1 to 5, wherein: The magnetic force of the magnet is greater than or equal to 0.13 T and less than or equal to 4 T.

7. The direction alignment device according to any one of claims 1 to 6, wherein: The laminated body is a laminated ceramic capacitor and has a plurality of internal electrode layers containing Ni as a ferromagnetic material.

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