JPS63207076A - Manufacture of terminal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method of manufacturing a terminal used in an IC or a terminal used in a ceramic layer package.

"Conventional technology" Conventional terminals for ceramic layer packages are required to have the same coefficient of expansion of the ceramic over a wide temperature range, good adhesion at the contact area between the metal and the ceramic, and good mechanical strength. Therefore, the terminal is formed into a round bar shape with seven flange portions formed at the end using a sealing material such as iron, nickel, and cobalt alloy.

However, when attaching such a terminal for a ceramic layer package to a ceramic layer package, a ceramic jig with a thickness of about 25 #111 is prepared separately, and a hole is drilled into it to accommodate the silver solder and the entire terminal. After doing 5 ooo times, use a jig to attach the silver solder terminal for the ceramic layer package, insert the silver solder chip into this hole, insert the terminal for the ceramic layer package, and weld it in the furnace to attach the ceramic layer package. After applying nickel plating for base plating to each of these as silver soldered terminals for packages,
A portion of the silver from this terminal was melted down again, and this time it was attached to the main body's ceramic layer package.

Therefore, there is a drawback that it takes time and effort to insert a silver solder chip or a terminal for a ceramic layer package.

In addition, in order to perform this work efficiently, it is necessary to either invert the automatically aligned terminals for the ceramic layer package, or to avoid inverting either the ceramic layer package into which the silver solder chip is inserted. There was a drawback that either the ceramic layer package terminal or the silver solder chip would come apart.

Furthermore, after the entire terminal for the ceramic layer package is soaked in a pot, the terminal for the ceramic layer package is installed in the hole, and then fixed by welding as described above. Since the silver solder adheres to the outer surface of the terminal, the sealing performance deteriorates and the ceramics may sometimes be destroyed.

``Object of the present invention'' In view of the above-mentioned conventional drawbacks, the present invention provides a method for extremely easily fixing a welding tip such as silver solder to the head.
It is an object of the present invention to provide a method for manufacturing a terminal that is easy to manufacture and can reduce costs.

[Means for Achieving the Objects of the Invention] The present invention includes a cutting process of cutting a wire rod capable of forming a terminal into a predetermined length dimension, and one end of the wire rod of the predetermined length dimension formed by this cutting step. a head forming step in which a head is formed on the part; and a welding tip fixing step in which a welding tip is crimped and fixed so as to cover the upper, side, and lower outer circumferences of the head, simultaneously or after the head forming step; It is characterized by including.

"Embodiments of the present invention" The present invention will be described in detail below with reference to embodiments shown in the drawings. - In the embodiments shown in Figures 1 to 4, 1 is a cutting process in which a copper alloy wire 2 is cut into a predetermined length, and the copper alloy used in this cutting process 1 contains 60% or more of copper. in,
For example, KIF-1 and KIF-2 manufactured by Kobe Steel Corporation
, K11-4, KLF-5, KIF-7, KLFl 2
5, KLFl 16, KICC-D-ANO19210
, CAC92CDANO172500 and the like are used.

The copper alloy wire used has a diameter of 2 to 0.1#I, and is cut to a length of 5IrIIR to 11 planes.

3 is a wire rod 2 cut to a predetermined length in the cutting step 1.
At one end of a, a head 4 is attached as shown in FIGS. 2 and 3.
This welding tip is fixed in a welding tip fixing step in which a head forming step and a welding tip fixing step are simultaneously performed, in which the welding tip 5 covering the upper, side, and lower outer circumferences of the head 4 is crimped and fixed at the same time. In step 3, a wire rod 2a cut to a predetermined length is set in a mold, a welding tip 5 is placed on top of the wire rod 2a, and a 140 kg
/m" or more, the welding tip 5 is plastically deformed so as to cover the head 4 having a diameter of 0.7 m to 0.75 m, and the upper surface, side surfaces, and outer periphery of the main surface of the head 4. The terminal 6 is crimped and fixed as shown in FIGS. 2 and 3.
is formed.

The welding tip 5 is made of silver solder, silver, solder, tin, or the like.

7, the terminal 6 is formed by rounding the tail portion 8 of the pant 6 formed in the welding tip fixing step 3 by swaging, rolling, barrel polishing, etc., as shown in FIG.
This is the tail part processing step to form A.

The terminal 6A manufactured by the above manufacturing method has a welding tip 5 crimped and fixed to the head 4 so as to cover the upper surface, side surfaces, and outer circumference of the lower surface of the head 4, so that the terminal 6A is suitable for use in ceramic layer packages. After the head is automatically inserted into the terminal fitting fl 4 hole and aligned, the welding tip 5 is melted and fixed by welding by heating in a furnace.

In this embodiment, a copper alloy is used as the wire 2, but the present invention is not limited to this, and wires made of copper or brass may also be used.

"Different Embodiments of the Present Invention" Next, different embodiments of the present invention shown in FIGS. 5 to 15 will be described. In the description of these embodiments, the same components as those of the embodiments of the present invention are designated by the same reference numerals and redundant explanations will be omitted.

The main difference between the embodiment shown in FIG. 5 and the embodiment of the present invention is that the terminal 6 is manufactured in a cutting process 1 and a welding tip fixing process 3. It has similar effects.

In the embodiment shown in FIGS. 6 and 7, the main difference from the embodiment of the present invention is the welding tip fixing step 3A, and this welding tip fixing step 3Δ is cut into a predetermined size with a diameter of 0.75 m. Since the terminal 6B is formed using the wire 2b, by forming the terminal 6B in this manner, the tail portion can be automatically formed into a round shape by forming the tail portion forming portion of the mold into a round shape.

In the embodiments shown in FIGS. 8 and 9, the main difference from the embodiment of the present invention is a welding tip fixing step 3B, in which a flange portion 10 is attached to the approximate center of the terminal body 9. Even if the terminal 6C is manufactured in this manner, similar effects can be obtained in that the head 4 is formed at the same time.

In the embodiment shown in FIGS. 10 and 11, the main difference from the embodiment of the present invention is the welding tip fixing step 3C;
This welding tip fixing process 3C simultaneously forms the head 4 and the seven flange portions 11 in the vicinity of the head 4, and even if the terminal 6D is manufactured in this manner, similar effects can be obtained.

The main difference between the embodiments shown in FIGS. 12 to 14 from the embodiments of the present invention is that the center part is made of a core material 2b made of copper, copper alloy, or brass, and the outer part is made of Kovar or 42Ni. In that the terminal 6F was manufactured using the wire 2A covered with the sealing material 2c, the wire $142A configured in this way may be used.

Note that the sealing material 2C that covers the outer peripheral portion of the core material 2b of the wire rod 2A is set to have a volume that is 45% or less of the volume of the core material 2b.

The main difference between the embodiment shown in FIG. 15 and the embodiment of the present invention is that the welding tip fixing step 3E is replaced by a head forming step 13 of forming a head 4 at one end of the wire 2a, and The terminal 6 may be manufactured in this manner in that the welding tip crimping step 14 is performed in which the welding tip 5 is crimped and fixed to the head 4 formed in step 13.

"Effects of the Present Invention" As is clear from the above description, the present invention has the following effects.

(1) A cutting process in which a wire rod capable of forming a terminal is cut into a predetermined length, and a head forming process in which a head is formed at one end of the piece of predetermined length formed by this cutting process. At the same time as or after the head forming step, the welding tip fixing process involves crimping and fixing the welding tip so as to cover the upper, side, and lower outer peripheries of the head, so it is easy to attach the welding tip using silver solder, etc. can be crimped and fixed to the head so that it does not fall off from the head. Therefore, manufacturing is easy.

(2) According to (1) above, it can be manufactured at low cost.

(3) According to the above (1), no special manufacturing equipment is required, so that it can be manufactured with inexpensive manufacturing equipment.

(4) According to (1) above, it can be manufactured even by non-skilled persons.

[Brief explanation of the drawing]

Fig. 1 is a process diagram showing an embodiment of the present invention, Figs. 2 and 3 are cross-sectional views and side views of a terminal formed in the welding tip fixing process, and Fig. 4 is a terminal formed in the tail part processing process. 5, 6 and 7, 8 and 9, 10 and 11, 12 to 14, and 15 are different cross-sectional views of the terminal, respectively, according to the present invention. It is an explanatory view showing an example. 1: Cutting process, 2.2A: Wire rod, 2a: Wire rod,
2b: core material, 2C: sealing material, 3.3Δ to 3E: welding tip fixing process, 4: head,
5: Liquor appetizer chip, 6.6A-6F: Terminal, 7
: Tail part processing step, 8: Tail part, 9: Terminal body, 10: Flange part, 11: Flange part. Patent application Yoshikatsu Hitoshi No. 6 Figure 3A

Claims (1)

[Claims] 1) A cutting step of cutting a wire rod capable of forming a terminal into a predetermined length dimension, and a head portion of the wire rod of the predetermined length dimension formed by this cutting step. A welding tip fixing step of crimping and fixing a welding tip so as to cover the upper, side, and lower outer circumferences of the head, either simultaneously or after the head forming step. A method for manufacturing terminals. 2) The wire is made of copper, copper alloy, or brass and is 2 mm to 0.1 m.
2. The method for manufacturing a terminal according to claim 1, wherein a terminal formed to have a diameter of m is used. 3) The wire used has a central part made of copper, copper alloy, or brass, and an outer peripheral part covered with a sealing material such as Kovar or 42Ni, with a diameter of 2 mm to 0.1 mm. A method for manufacturing a terminal according to claim 1. 4) The head forming step is characterized by forming a head at one end of a wire of a predetermined size using a welding tip under a pressure of 140 kg/mm^2 or more, and crimping and fixing the welding tip to the head. A method for manufacturing a terminal according to any one of claims 1 to 3. 5) The method for manufacturing a terminal according to any one of claims 1 to 4, wherein the welding tip is formed into a chip shape using silver solder, solder, tin, or the like.