JPH10294024A - Electric and electronic parts and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electric and electronic parts in which a coated resin or plating is hardly peeled by irradiating laser beam on a metal surface to form irregularities, then election-molding a resin, a rubber or the like at the irregular site and coating it. SOLUTION: A metal lengthwise coil 1 is plate through a laser printing mechanism 34 from a winding coil 11 and supplied to an injection molding machine 4. The laser printing mechanism 34 has a laser shooting part 341 upwardly and is connected by a high-frequency oscillation power supply and a high-frequency cable 342, and laser beam is continuously or intermittently irradiated from the laser shooting part 341 to the metal lengthwise coil 1. The laser beam reaches a given position on the surface of the metal lengthwise coil 1, the surface of the metal lengthwise coil 1 is roughened in stripe shape, dotted shaped, broken-line shape, roulette-shape, or pear foundation shape. Then, the metal lengthwise coil 1 is supplied to the injection molding machine 4, a molten resin under a high temperature and high pressure is coated with insert-molding, cooled, and cured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electrical and electronic parts such as lead frames for semiconductor devices, connectors, relays, crystal oscillators and lasers. The present invention also relates to a method for manufacturing the electric / electronic component.

[0002]

2. Description of the Related Art Electrical and electronic components such as lead frames for semiconductor devices, connectors, relays, bases for crystal oscillators, caps, CD-ROM reading bases, caps, and the like are made of metal long coils. It is manufactured by punching, bending, crushing, plating coating, and coating with various resins and rubber. conventionally,
Rolled material is often used as it is as a metal long coil made of a material to be plated or coated with various resins or rubber. Rolled materials include glossy materials, semi-glossy materials, hairline materials, and the like, when classified based on surface properties. Each of the rolled materials was coated with a thermosetting resin, a thermoplastic resin, a silicone resin, a rubber, or the like by insert molding using an injection molding machine in the surface state as it was. However, conventional resin and rubber coating processes have insufficient bonding between the resin and the metal and a minute gap at the interface between the metal and the resin, causing the resin to peel off or pulling the metal from the resin or the like. There is a problem of getting out. In the past, plating was performed after washing the rolled material as it was, but the adhesion between the metal and the plating layer of the material was insufficient, and the plating was peeled off, resulting in poor electrical conduction. There is a problem.

Therefore, it is an object of the present invention to solve the above problems.

[0004]

SUMMARY OF THE INVENTION The above problem is solved by claim 1.
In other words, the problem is solved by the electric / electronic component described in (1), that is, the resin / rubber or the like, which is formed by injecting a laser beam into a metal surface of a portion to be covered by injection molding in advance.

[0005] Further, the above-mentioned problem is caused by the method of manufacturing an electric / electronic part according to claim 2, that is, forming irregularities by irradiating a metal surface with a laser beam, and then forming resin and rubber on the irregularity-formed portions. This is solved by a method for manufacturing an electric / electronic component, which is characterized by injection-molding and coating the like.

Further, the above problem is caused by the electric / electronic component according to the third aspect, that is, the electric / electronic component in which irregularities are formed by previously irradiating a laser beam to a metal surface of a portion to be subjected to partial plating. Will be solved.

Further, the above-mentioned problem is caused by a method of manufacturing an electric / electronic component according to claim 4, that is, forming irregularities by irradiating a metal surface with a laser beam, and then forming a base on the entire surface of the metal surface. The problem is solved by a method for manufacturing an electric / electronic component, wherein plating is performed, and a partial plating layer is formed on a surface of a base plating immediately above the concave / convex portion.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an electric and electronic component according to an embodiment of the present invention and a method for manufacturing the same will be described in detail with reference to the accompanying drawings.

Embodiment 1 FIG. 1 is a schematic view of a laser marking machine and a press according to Embodiment 1 of the present invention.

The long metal coil 1 of the material is passed through the unwinding coil 11 in the order of a first laser stamping machine 31, a press machine 2, a second laser stamping machine 32, and a third laser stamping machine 33. , And wound up by the winding coil 12.
Laser emitting units 311, 321 and 331 are provided above each of the laser stamping machines 31, 32 and 33, and can irradiate a laser beam to be irradiated in a direction perpendicular to the plate direction. In addition, each of the laser emitting units 311, 321, 331
Are connected to a high-frequency oscillation power supply (not shown) by high-frequency cables 312, 322, and 332, respectively. Then, laser light is continuously or intermittently applied to a long metal coil of an iron-based alloy such as 42 alloy or stainless steel or a copper-based alloy such as phosphor bronze, beryllium copper, brass, or oxygen-free copper, The surface of the long metal coil is roughened in a stripe shape or a satin shape.

In the first embodiment, since all the laser emitting portions are disposed above the long metal coil, only the upper surface or only one surface of the long metal coil is irradiated with the laser beam to be roughened. On the other hand, as another embodiment, a part of the plurality of laser emitting units may be arranged above the long metal coil, and the rest may be arranged below the long metal coil.
According to the embodiment (not shown), the upper and lower surfaces of the long metal coil can be irradiated with laser light to roughen both surfaces.

In the first embodiment, one laser marking machine is arranged upstream of the press machine and two laser marking machines are arranged downstream. However, in another embodiment, one laser marking machine is arranged only downstream. Alternatively, it may be changed so that only one device is installed upstream.

Embodiment 2 FIG. 2 is a schematic view of a laser marking machine and an injection molding machine according to Embodiment 2 of the present invention.

The metal long coil 1 of the material is passed from the unwinding coil 11 to a fourth laser marking machine 34 and supplied to the injection molding machine 4. The metal long coil made of the material used in the second embodiment may be a pressed product or a press-plated product. The fourth laser marking machine 34 has a laser emitting unit 341 above, and is connected to a high-frequency oscillation power supply (not shown) by a high-frequency cable 342. Laser light is continuously or intermittently irradiated from the laser emitting section 341 to the metal long coil 1, and the laser light is scanned and shaken in a direction perpendicular to the running direction of the metal long coil. Can be. The laser beam hits a predetermined position on the surface of the long metal coil, and the surface of the long metal coil has a stripe shape, a dotted line shape, a wavy line,
Knurled or satin-like. Then,
The long metal coil 1 is supplied to the injection molding machine 4, coated with a resin in a molten state at a high temperature and a high pressure by insert molding, and cooled and solidified.

Since the resin-coated portion is previously roughened with a laser beam, the cross section of the resin-coated metal long coil is as shown in FIGS. 4 and 5. In FIG. 4, the surface of the long metal coil 1 is irradiated with laser light in the form of stripes or stripes to form a stripe-shaped concave portion 101,
102, 103, 104, 105, and 106 are formed, and the resin 41 is coated on the uneven portions. In FIG. 5, laser light is scattered onto the surfaces 100 and 110 of the long metal coil 1 so that
2 is formed, and a resin is coated on the uneven portion.

COMPARATIVE EXAMPLE As a comparative example, rolling was performed using a grooved roll having irregularities on the roll surface to form irregularities on the surface of the long metal coil. Then, similarly to the present embodiment, the resin was coated on the concave / convex portion using an injection molding machine. However, when so-called mechanical engraving is performed, there is a drawback that the metal long coil and the minute punched portion are stretched and the dimensional accuracy is deteriorated in addition to the formation of unevenness. In addition, there is a disadvantage that the resin is peeled off because the uneven portion is too clean and the roughness is insufficient.

On the other hand, in the present embodiment, since the irregularities on the surface are irregular in a fine range, the resin and the metal are well adhered to each other, and no peeling occurs. Also, because of the unevenness, the area of the contact interface between the resin and the metal is large, and the length of the path connecting the outside and the inside becomes long, so that solder, flux and moisture are sealed from the outside along this interface. The effect of hardly getting into the inside was obtained.

Third Embodiment FIG. 3 is a schematic diagram of a laser marking machine, a plating cleaning machine, and a plating machine according to a third embodiment of the present invention.

The long metal coil 1 of the material is fed from the unwinding coil 11 to the fifth laser marking machine 35,
And the plating machine 6. The fifth laser stamping machine 35 has a laser emitting unit 351 above, and is connected to a high-frequency oscillation power supply (not shown) and a high-frequency cable 352.
It is connected. Laser light is continuously or intermittently irradiated from the laser emitting unit 351 to the long metal coil 1, and the laser beam is scanned and shaken in a direction perpendicular to the running direction of the long metal coil. Can be. The laser beam hits a predetermined position on the surface of the metal long coil, and the surface of the metal long coil has a stripe shape, a dotted line shape,
Wavy, knurled or pear-skinned. Thereafter, the long metal coil 1 is supplied to the plating washing machine 5. Then, dirt and oil adhering to the surface of the long metal coil 1 are removed, and if necessary, the surface oxide layer is pickled and removed.

FIG. 6 is a sectional view of a plated connector terminal of the third embodiment. A part of the surface of the metal 1 is irradiated with a laser beam to form the satin-like irregularities 113 in advance. Next, a base Ni plating layer 61 is formed on all surfaces including the metal smooth surface 100 and the uneven portions 113.
Interfaces 610 and 611 between base Ni plating layer 61 and metal 1
Are formed on the surface of the metal 1 without gaps, and particularly, the uneven portions 11
3, the underlying Ni plating layer 61 enters the fine and irregular irregularities. When the thickness of the base Ni plating layer 61 is equal to or larger than a predetermined value, the base N
The surfaces 612 and 620 of the i-plated layer have a smooth planar shape. Subsequently, a portion Au is formed on the surfaces 612 and 620 of the base Ni plating layer 61 in a range immediately above the uneven portion 113 of the metal 1.
A plating layer 62 is formed. The interface of the partial Au plating layer 62 is in close contact with the surface 620 of the base Ni plating layer 61. As a result of a normal repeated sliding test and practical use, the partial Au plating layer is harder to peel off than in the conventional example, electrical continuity is secured, and there is almost no deterioration in electric resistance. Also,
The surface 621 of the partial Au plating layer 62 is extremely smooth.

[0021]

According to the electric / electronic component of the present invention, the metal surface is irradiated with a laser beam in advance to form irregularities.
Because the resin or the like is injection-molded and coated on the irregularity-formed portion, fine irregular irregularities are formed on the metal surface, and the resin or the like penetrates finely into the irregularity, causing an anchor effect and coating the resin or the like. The effect that the layer is hard to peel off is obtained.

In the electric / electronic component according to the present invention, the metal surface is irradiated with a laser beam in advance to form irregularities, and thereafter, the irregularities are coated by injection molding resin or the like. Fine irregular irregularities are formed, and the resin and the like penetrate minutely into the irregularities, and the interface is bent in a complicated manner, so that there is an effect that it is difficult for solder, flux and moisture to pass along the interface.

In the electric / electronic component according to the present invention, the metal surface is irradiated with a laser beam in advance to form irregularities, and thereafter, a plating layer is formed on the irregularity-forming portion, directly or via a base plating layer. Since it is formed, fine and irregular irregularities are formed on the metal surface, and the plating layer penetrates finely into the irregularities, and has an effect that an anchor effect is generated and the plating layer is difficult to peel.

In the electric / electronic component according to the present invention, the metal surface is irradiated with a laser beam in advance to form irregularities, and thereafter, a plating layer is formed on the irregularity-forming portion directly or via a base plating layer. Since it is formed, dirt and oxide films are repelled and removed from the metal surface, the metal surface is activated, and the base Ni plating layer is firmly adhered and has an effect of being hardly peeled off.

In the electric / electronic component according to the present invention, the metal surface is irradiated with a laser beam in advance to form irregularities, and thereafter, a plating layer is formed on the irregularity-forming portion directly or via a base plating layer. Since it is formed, there is an effect that the plating layer is firmly attached, a gap is hardly generated at the interface, and electrical conduction is ensured.

[Brief description of the drawings]

FIG. 1 is a schematic view of a laser stamping machine and a press according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a laser marking machine and an injection molding machine according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram of a laser stamping machine, a plating cleaning machine, and a plating machine according to a third embodiment of the present invention.

FIG. 4 is a cross-sectional view of a long metal coil coated with a resin according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of a long metal coil coated with a resin according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a plated connector terminal according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal long coil 100 Surface 101 Stripe recess 102 Stripe recess 103 Stripe recess 104 Stripe recess 105 Stripe recess 106 Stripe recess 110 Surface 111 Satin texture 112 Satin texture 113 Uneven texture 2 Press machine 31 First laser stamping machine 311 Laser emitting unit 312 High frequency cable 32 Second laser stamping unit 321 Laser emitting unit 322 High frequency cable 33 Third laser marking machine 331 Laser emitting unit 332 High frequency cable 34 Fourth laser Marking machine 341 Laser emitting unit 342 High frequency cable 35 Fifth laser marking machine 351 Laser emitting unit 352 High frequency cable 36 Sixth laser marking machine 361 Laser emitting unit 362 High frequency cable 4 Injection Forms machine 41 resin 5 plated washer 6 plating machine 61 underlying Ni plating layer 610 interface 611 interface 612 surface 620 surface 62 partially Au plating layer 621 surface 11 unwinding coil 12 winding coils

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H01R 13/03 H01R 13/03 D H03H 9/05 H03H 9/05

Claims (4)

[Claims] 1. An electric / electronic component in which a metal surface of a portion to be covered by injection molding of resin, rubber, or the like is previously irradiated with laser light to form irregularities. 2. A method for producing an electric / electronic component, comprising: irradiating a laser beam on a metal surface to form irregularities; and thereafter, injecting and coating a resin, rubber, or the like on the irregularity-formed portion. 3. An electric / electronic component in which a metal surface at a portion where partial plating is to be performed is previously irradiated with laser light to form irregularities. 4. Irradiation of a laser beam on the metal surface to form irregularities, thereafter, undercoating is performed on the entire area of the metal surface, and further, a partial plating layer is formed on the surface of the undercoat immediately above the irregularity forming portion. A method for producing an electric / electronic component, comprising: