JP2007189123A - Method for manufacturing resistor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a resistor which can improve the productivity. <P>SOLUTION: The manufacturing method for the resistor includes a process to carry out the cladding joint of a plurality of belt like second metals 15 on the one side of the sheet like first metal 14 in parallel mutually with a constant interval, a process to form a plurality of the belt like first metals 14 equipped with the second metal 15 in the both ends of the one face by cutting lengthwise the center line 16 of the second metal 15, and a process to form an individual piece-like resistor having the second metal 15 used as an electrode 12 in the both ends of the first metal 14 used as the resistor 11 by cutting the sheet like first metal 14 in the lateral direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method of manufacturing a resistor used for detecting a current value of various electronic devices.

  As shown in FIG. 4, a conventional method of manufacturing this type of resistor is to join a strip-like resistor 1 to a strip-like electrode 2 by rolling or clad joining, and cut them one by one in the lateral direction. I was trying to get a piece of resistor.

As prior art document information relating to the invention of this application, for example, Patent Document 1 is known.
Japanese Patent Laid-Open No. 2002-289412

  In the conventional resistor manufacturing method described above, the resistor 1 is continuous only in the vertical direction, and the resistor 1 provided with the electrode 2 is cut only in the horizontal direction to manufacture the resistor. Therefore, there was a problem that productivity was not good.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a method for manufacturing a resistor capable of improving productivity.

  In order to achieve the above object, the present invention has the following configuration.

  According to a first aspect of the present invention, there is provided a step of clad joining a plurality of strip-shaped second metals in parallel to each other at a predetermined interval on one surface of a sheet-like first metal; Cutting a metal metal centerline in a longitudinal direction to form a plurality of strip-shaped first metals each having a second metal at both ends of one surface; and forming the strip-shaped first metal in a lateral direction And a step of forming an individual resistor having a second metal serving as an electrode at both ends of one surface of the first metal serving as a resistor, according to this manufacturing method. For example, since the first metal serving as a resistor is continuous not only in the vertical direction but also in the horizontal direction, it is possible to obtain a large number of resistors at once by cutting in the vertical and horizontal directions. Since the second metal is clad-bonded, many electrodes made of the second metal are easily formed. It can, these by, in which is the action and effect that it is possible to remarkably improve the productivity obtained.

  The invention according to claim 2 of the present invention is particularly characterized in that the longitudinal cutting is performed using a disk, and the width of the disk is determined by the difference between the width of the second metal and the width of the electrode twice. With this manufacturing method, it is possible to obtain the operational effect that the desired product dimensions can be obtained with high accuracy.

  According to the third aspect of the present invention, in particular, a through hole is formed in the first metal between the piece-like resistors adjacent in the longitudinal direction. According to this manufacturing method, the first When the insulating layer is formed on the other surface of the metal, since the insulating layer enters the through hole, the effect of forming the insulating layer also on the side surface of the resistor of the resistor can be obtained.

  According to a fourth aspect of the present invention, a plurality of strip-shaped first metals provided via grooves are fixed to a frame, and a plurality of strip-shaped first metals are provided on one surface of each of the plurality of strip-shaped first metals. A step of clad-bonding the second metal at a predetermined interval, a center line of the second metal is cut in a vertical direction, and electrodes are formed at both ends of one surface of the first metal to be a resistor. Forming a discrete resistor having a second metal, and according to this manufacturing method, when the insulating layer is formed on the other surface of the first metal, the insulating layer is a groove. In order to penetrate, an insulating layer is formed not only on the resistor body of the resistor but also on the side surface of the electrode, thereby preventing the solder fillet from extending to the side surface of the electrode, so that the resistance value can be stabilized. An effect is obtained.

  According to a fifth aspect of the present invention, there is provided a step of clad joining a plurality of strip-shaped second metals in parallel to each other at a predetermined interval on one surface of a sheet-like first metal; Forming a plurality of strip-shaped first metals having a plurality of second metals on a surface at regular intervals by cutting in a transverse direction so as to be orthogonal to the two metals; A step of measuring a resistance value between the second metals in the first metal, and the first metal in the strip shape by cutting a center line of the second metal in a vertical direction to form a first resistor. Forming a piece-shaped resistor having a second metal serving as an electrode at both ends of one surface of the metal, and according to this manufacturing method, a strip having the second metal at regular intervals Because the first metal can be arranged in a row in a horizontal direction, the resistance value between the second metals can be easily measured Effect that wear are those that can be obtained.

  According to the sixth aspect of the present invention, in particular, the first metal is formed with a plurality of recesses at regular intervals, and the second metal is clad-bonded to the recesses. According to this, the effect that the position where the second metal is formed by the recess can be easily defined is obtained.

  As described above, the method of manufacturing a resistor according to the present invention includes a step of clad-bonding a plurality of strip-shaped second metals in parallel to each other at a predetermined interval on one surface of a sheet-like first metal; Cutting a center line of the second metal in a longitudinal direction to form a plurality of strip-shaped first metals each having a second metal at both ends of one surface; and laterally extending the strip-shaped first metal Cutting in the direction, and forming a piece-shaped resistor having a second metal serving as an electrode at both ends of one surface of the first metal serving as a resistor. The first metal is continuous not only in the vertical direction but also in the horizontal direction, whereby a large number of resistors can be obtained at one time by cutting in the vertical direction and the horizontal direction. Since the metal is clad-bonded, many electrodes made of the second metal can be easily formed. Can be, these by, in which an excellent effect that it is possible to greatly improve the productivity.

  FIG. 1 is a perspective view of a resistor according to an embodiment of the present invention. As shown in FIG. 1, the resistor according to an embodiment of the present invention is a resistor 11 made of a metal plate. And a pair of electrodes 12 provided on the lower surface of the resistor 11 so as to be separated from each other, and an insulating layer 13 on the upper surface of the resistor 11 and the lower surface of the resistor 11 positioned between the pair of electrodes 12. It is set as the structure which formed.

  In the above configuration, the resistor 11 is made of a metal plate made of a plate-like metal having good conductivity such as nichrome, copper nickel, manganin, etc., and has a length of 1.0 to 15 mm and a width of 0.5. 10 mm and the thickness is 100 to 1000 μm.

  The pair of electrodes 12 are formed by clad bonding copper or the like to the lower surface of the resistor 11 so as to be separated from each other. And the tin plating is given to the lower surface of this electrode 12, and a resistor is mounted in a mounting board by this. Note that nickel plating or gold plating may be formed between the tin plating and the lower surface of the electrode 12 as necessary.

  In addition, an insulating layer 13 is formed on a portion located between the pair of electrodes 12 on the upper surface of the resistor 11 and the lower surface of the resistor 11, and the insulating layer 13 is made of epoxy resin, polyimide resin, or the like. It is comprised with the insulating material.

  Next, a method for manufacturing a resistor according to an embodiment of the present invention will be described.

  1 and 2, first, a sheet-like first metal 14 is formed by subjecting a plate-like metal made of nichrome, copper nickel, manganin or the like to cutting, punching, pressing, or the like. The first metal 14 becomes the resistor 11 by being divided into individual pieces.

  Next, as shown in FIG. 2, a plurality of strip-like second metals 15 made of copper or the like are clad-bonded to one surface of the first metal 14 in parallel with each other at a predetermined interval. The second metal 15 becomes the electrode 12 by being divided into individual pieces. In addition, one surface of the first metal 14 corresponds to the lower surface of the resistor 11 in the individual resistor.

  The clad bonding is performed by bringing the first metal 14 and the second metal 15 into contact with each other, and then ultrasonically oscillating or heating while applying pressure. As a result, the metal atoms of the first metal 14 and the second metal 15 move to each other and are diffusion-bonded.

  A plurality of recesses (not shown) may be formed in the first metal 14 at regular intervals, and the second metal 15 may be clad-bonded to the recesses (not shown). The position where the second metal 15 is formed can be easily defined by the recess (not shown).

  Next, an insulating layer 13 made of an epoxy resin, a polyimide resin, or the like is formed on the other surface of the first metal 14 and a portion located between the second metal 15 on one surface of the first metal 14. The insulating layer 13 may be formed after the first metal 14 is divided into strips or after being divided into individual pieces.

  In FIG. 2, the insulating layer 13 is omitted for the sake of simplicity.

  Next, the center line 16 of the second metal 15 is cut in the vertical direction to form a plurality of strip-shaped first metals 14 each having the second metal 15 at both end portions of one surface.

  The cutting in this case is performed using a disk. The width of the disk is substantially the same as the difference between the width of the second metal 15 and twice the width of the electrode 12. In this way, the required product dimensions can be obtained with high accuracy. Here, substantially the same thing is considered in consideration of the dimensional tolerance of the width of the disk and the second metal 15.

  The longitudinal cutting of the center line 16 of the second metal 15 may be performed using other methods such as dicing other than the disc.

  Next, the strip-shaped first metal 14 is cut in the horizontal direction by dicing or the like, and the piece having the second metal 15 that becomes the electrode 12 at both ends of one surface of the first metal 14 that becomes the resistor 11. To form a resistor. In this case, it cut | disconnects at equal intervals by the line 17 orthogonal to the center line 16 of the 2nd metal 15 cut | disconnected by the vertical direction.

  Finally, tin plating is formed on the lower surfaces of the pair of electrodes 12. Further, after this, the resistance value of the resistor is measured. In this case, if necessary, the resistance value may be adjusted by forming a notch in the resistor 11.

  As shown in FIG. 3A, if through holes 18 are formed in the first metal 14 between the piece-wise resistors adjacent in the vertical direction, the first metal 14 When the insulating layer 13 is formed on the surface, the insulating layer 13 enters the through hole 18, so that the insulating layer 13 can also be formed on the side surface of the resistor 11 of the resistor.

  Furthermore, as shown in FIG. 3B, a plurality of strip-shaped first metals 14 provided through the grooves 19 may be fixed to the frame 20. With such a configuration, when the insulating layer 13 is formed on the other surface of the first metal 14, the insulating layer 13 enters the groove 19, so that not only the resistor 11 of the resistor but also the side surface of the electrode 12. Since the insulating layer 13 is formed, and thus the solder fillet can be prevented from extending to the side surface of the electrode 12, the resistance value can be stabilized.

  At this time, a plurality of strip-like first metals 14 may be provided by forming the grooves 19 while leaving the both ends of the sheet-like first metal 14 without using the frame 20.

  The groove 19 may be formed by punching the sheet-like first metal 14 by punching or the like, and the clad bonding of the second metal 15 is performed before or after the groove 19 is formed. But you can.

  In one embodiment of the present invention described above, a step of clad joining a plurality of strip-shaped second metals 15 in parallel to each other at a certain interval on one surface of the sheet-like first metal 14; Cutting the center line 16 of the second metal 15 in the longitudinal direction to form a plurality of strip-shaped first metals 14 having the second metal 15 at both end portions of one surface; and strip-shaped first metal A step of cutting the metal 14 in the lateral direction to form a piece-shaped resistor having the second metal 15 to be the electrode 12 at both ends of one surface of the first metal 14 to be the resistor 11. Therefore, the first metal 14 that becomes the resistor 11 is continuous not only in the vertical direction but also in the horizontal direction, so that a large number of resistors can be formed at a time by cutting in the vertical and horizontal directions. It can be obtained. Furthermore, since the second metal 15 is clad-bonded, a large number of electrodes 12 made of the second metal 15 can be easily formed, and the productivity can be remarkably improved thereby. It is obtained.

  In the resistor manufacturing method according to the embodiment of the present invention, the center line 16 of the second metal 15 is cut in the vertical direction, then the first metal 14 is cut in the horizontal direction, and thereafter In the above description, the resistance value is measured. However, after the first metal 14 is cut in the horizontal direction, the resistance value is measured, and then the center line 16 of the second metal 15 is cut in the vertical direction. In this case, the strip-shaped first metal 14 having the second metal 15 can be arranged in series in a row in a row at regular intervals. The resistance value can be easily measured. That is, after measuring the resistance value between the adjacent second metals 15 and adjusting the resistance value as necessary, if the strip-shaped first metal 14 is shifted in the lateral direction, the second second metal 15 is moved in the same position. The resistance value between the metals 15 can be measured. In addition, the resistance value can be measured before dividing into pieces.

  The method for manufacturing a resistor according to the present invention can improve productivity, and is useful in a resistor used for detecting a current value of various electronic devices.

The perspective view of the resistor in one embodiment of this invention Plan view showing a state during the manufacture of the resistor (A) The top view which shows the state in the middle of manufacture of the other example of the resistor, (b) The top view which shows the state in the middle of manufacture of the other example of the resistor A perspective view of a conventional resistor

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Resistor 12 Electrode 14 1st metal 15 2nd metal 16 2nd metal centerline 18 Through-hole 19 Groove 20 Frame

Claims (6)

Clad joining a plurality of strip-like second metals to one surface of the sheet-like first metal in parallel with each other at a constant interval, and longitudinally cutting the center line of the second metal. And forming a plurality of strip-shaped first metals each having a second metal at both ends of the surface, and cutting the strip-shaped first metal in the lateral direction to form the first resistor. Forming a piece-shaped resistor having a second metal serving as an electrode at both ends of one surface of the metal. 2. The method of manufacturing a resistor according to claim 1, wherein the longitudinal cutting is performed using a disk, and the width of the disk is substantially the same as the difference between the width of the second metal and twice the width of the electrode. . The method for manufacturing a resistor according to claim 1, wherein a through hole is formed in the first metal between the piece-like resistors adjacent in the vertical direction. A plurality of strip-shaped first metals provided via a groove are fixed to a frame, and a plurality of second metals are clad on a surface of each of the plurality of strip-shaped first metals at a predetermined interval. A step of joining and a piece-like resistor having a second metal serving as an electrode at both ends of one surface of the first metal serving as a resistor by cutting a center line of the second metal in a longitudinal direction A method of manufacturing a resistor comprising a step of forming a vessel. A step of clad-joining a plurality of strip-shaped second metals in parallel with each other at a predetermined interval on one surface of the sheet-like first metal, and cutting in a lateral direction so as to be orthogonal to the second metal And forming a plurality of strip-shaped first metals having a plurality of second metals on a surface at regular intervals, and a resistance value between the second metals in the strip-shaped first metal. And measuring the first metal strip in a longitudinal direction along the center line of the second metal to form electrodes on both ends of one surface of the first metal to be a resistor. And a step of forming a piece-shaped resistor having a metal. The method for manufacturing a resistor according to claim 1, wherein a plurality of recesses are formed in the first metal at regular intervals, and the second metal is clad-bonded to the recesses.

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