JP3016938B2 - Cleaning equipment for lead frames for photo interrupters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

As shown in FIGS. 1 and 2, the present invention comprises a light emitting device 2 having a pair of two lead terminals 2a and 2b and a light emitting device 2 having a pair of two lead terminals 3a and 3b. The present invention relates to an apparatus for cleaning a lead frame used in manufacturing the photointerrupter 1 in which the light receiving elements 3 are integrated with a synthetic resin molded part 4 so as to face each other. is there.

[0002]

2. Description of the Related Art Generally, when manufacturing a photointerrupter 1 of this type, as shown in FIG. 3, a pair of lead terminals 2a and 2b are formed at appropriate intervals along a longitudinal direction, and each lead terminal 2a and 2b is formed. a light-emitting element lead frame a ₁ obtained by forming a light-emitting element 2 at the tip, a pair of lead terminals 3
a, each to shape the 3b at appropriate intervals along the longitudinal direction the lead terminals 3a, and a light-emitting element lead frame A ₂ obtained by forming a light-receiving element 3 to the distal end of 3b, the light-emitting element 2 and the light receiving element 3 Then, the two lead frames A ₁ and A ₂ are subjected to metal plating such as soldering, and further, washing is performed to remove flux and the like used in the metal plating. After that, each photo interrupter 1 is connected to both lead frames A ₁ ,
Manufacturing method in decouple from A ₂ is applied.

As shown in FIG. 3, when cleaning both integrated lead frames A ₁ and A ₂ ,
Clamping the two lead frames A ₁ and A ₂ or the photointerrupter 1 so as to sandwich them from both sides thereof and immersing them in the cleaning liquid in this state can be performed by the two lead frames A ₁ and A _2. Or each photo interrupter 1
Conventionally, a plurality of both lead frames A ₁ and A ₂ integrated as described above are placed in a net basket and immersed in a cleaning solution in this state because the clamped portion cannot be cleaned. ing.

[0004]

Accordingly, in the conventional method, not only the cleaning process cannot be automated because of the so-called batch system, but also a long time is required for cleaning because of low contact with the cleaning solution. There is a problem. In addition, when a plurality of integrated lead frames A ₁ and A ₂ are put in a net basket, each lead frame is entangled with each other, so that not only deformation of the lead frame and damage to the toilet ruptor 1 occur frequently, After washing,
The above-mentioned entanglement must be solved, and this requires a great deal of trouble.

The present invention focuses on the fact that a lead frame used in manufacturing the photointerrupter is generally made of a thin plate of carbon steel. An object of the present invention is to provide a cleaning device that does not cause a problem.

[0006]

SUMMARY OF THE INVENTION In order to achieve this technical object, the present invention provides a cleaning tank containing a cleaning liquid, in which a rotating body that rotates about a substantially horizontal axis is disposed. The two lead frames integrated in parallel with each other are mounted on the rotating body in a posture substantially parallel to the axis of the rotating body above the rotating body. And while providing a transport means which is lifted from the rotating body, the outer peripheral surface of the rotating body is provided with a supporting portion where the lower end edges of both the lead frames are in contact with each other, and the both lead frames are attached to the supporting portion. Are provided at a plurality of locations along the circumferential direction at appropriate intervals along the circumferential direction, and further, the rotating body is intermittently attached to the rotating body at the pitch interval of the supporting portion. Rotary drive to rotate It was to be provided with a stage.

[0007]

In this configuration, when the rotation of the rotating body is stopped, the two lead frames are placed on the outer peripheral surface of the rotating body by the transport means. Since the rim abuts against the supporting portion on the outer peripheral surface of the rotating body, and is attracted to the supporting portion by the magnet body in this state, the two lead frames are separated from each other on the outer peripheral surface of the rotating body. For each of the supports,
The two lead frames can be mounted in an upright posture with respect to the outer peripheral surface of the rotating body.

The two lead frames mounted on the rotating body as described above are immersed in the cleaning liquid by the rotation of the rotating body in a state of standing upright with respect to the outer peripheral surface of the rotating body. At this time, the two lead frames only cover the portion of the longitudinal lower edge that abuts on the support portion, and most of the other portions are all exposed. Since the movable body is moved by the rotation of the rotating body, the entire surfaces of both the lead frames and the photointerrupters can be quickly cleaned.

On the other hand, since the two lead frames are merely attracted to the rotating body by the attraction force of the magnet, when the two lead frames move to the original positions by the rotation of the rotating body, By lifting the both lead frames by the transporting means, the lead frames can be easily separated from the rotating body.

[0010]

As described above, according to the present invention, the two lead frames can be mounted upright with respect to the rotating body simply by placing them on the rotating body, and the entire surface can be reliably secured by rotating the rotating body. The cleaning process can be easily performed, and the cleaning process can be easily automated since the cleaning process can be easily performed by lifting from the rotating body after cleaning. Can be reliably reduced.

In addition, the entire surface of both the lead frame and the photo interrupter can be quickly and efficiently cleaned to every corner.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Will be described. In the figure, reference numeral 5 denotes a first cleaning tank, and reference numeral 6 denotes a second cleaning tank adjacent to the first cleaning tank 5, and the cleaning liquid supplied into the second cleaning tank 6 is:
The partition plate 7 that divides the two washing tanks 5 and 6 overflows from the upper end thereof, flows into the first washing tank 5, and then flows out of the first washing tank 5.

In the first cleaning tank 5, a drum type first cleaning tank 5 is provided.
The rotating body 8 is set so that the axis of the first rotating body 8 is
While being arranged so as to face, the second cleaning tank 6
Also, the drum-shaped second rotating body 9 is attached to the second rotating body 9.
Are arranged so that the horizontal axis is substantially horizontal and horizontal. this
Above the rotary bodies 8 and 9,
Lead frame A ₁, A_TwoIs the axis of the rotating bodies 8 and 9
Clamped in a substantially parallel position as shown by arrow B
Then, it rises and moves horizontally just above the first rotating body 8.
And then release the clamp after descending,
Both lead frames A₁, A_TwoOutside the first rotating body 8
A first transport unit 11 mounted on a peripheral surface;
Both lead frames A on the outer peripheral surface of one rotating body 8₁, A
_TwoAnd move upward as shown by arrow C,
Horizontally moves to just above the second rotating body 9 and moves down
Release both ramps by releasing the ramp
A₁, A_TwoOn the outer peripheral surface of the second rotating body 9
And the outer peripheral surface of the second rotating body 9
Lead frame A₁, A_TwoClamp the arrow
As shown by D, it rises and moves horizontally just above the discharge table 13.
After moving and descending, release the clamp.
And the two lead frames A₁, A_TwoAnd the discharge table 1
And the third transporting means 14 for sending out to the third
You.

The outer peripheral surface of the first rotating body 8 is provided at one end portion and the other end portion of the rotating body 8 with:
A plurality of support portions 15 provided with a pair of left and right side guide pieces 15a and 15b and formed in an upward U-shape are provided at a plurality of locations at an appropriate pitch along the circumferential direction, and each of the locations of the support portions 15 is provided. Is provided with a magnet body 16. On the other hand, a pair of left and right side guide pieces 17a and 17b are similarly provided on the outer peripheral surface of the second rotating body 9 at one end portion and the other end portion of the rotating body 9 to form an upward U-shape. The supporting portions 17 are provided at a plurality of locations at appropriate intervals along the circumferential direction, and a magnet body 18 is provided at each location of the supporting portions 17.

The two rotating bodies 8, 9 are connected to the motor 1
When the rotary members 8 and 9 are driven to rotate in the direction of the arrow by the power transmission from the belt 9 through the belts 20 and 21,
It is configured to rotate intermittently at the pitch of the support portions 15 and 17 on the outer peripheral surface. In this configuration, both lead frames A ₁ and A ₂ in the supply table 6 are
The first transport unit 11 places the support on the upper surface of the support unit 15 of the first rotating body 8. Then, the two lead frames A ₁ , A ₂ have their longitudinal lower end edges abutting on the support portion 15, and in this state, are attracted by the magnet body 16, so that the outer peripheral surface of the first rotating body 8 is formed. The first rotating body 8 is immersed in the cleaning liquid in the first cleaning tank 5 by the intermittent rotation of the first rotating body 8 and is moved by moving through the cleaning liquid.

Next, the two lead frames A ₁ , A ₂
Is at the original position with the rotation of the first rotating body 8,
After being lifted from the first rotating body 8 by the second transporting means 12, it is sent to the second rotating body 9, where it is again cleaned in the second cleaning tank 6, and then the third transporting means. It is sent out to the discharge table 13 by the means 14.

Each support part 1 of the two rotating bodies 8 and 9
5 and 17, both side guide pieces 15a, 15b, 17
a and 17b, as shown in FIG.
When the central guide pieces 15c and 17c are provided, it is possible to handle small to large ones as shown by the one-dot chain line and the two-dot chain line in FIG. In addition, although the said Example showed the case where a drum-type rotary body was used as a rotary body, the rotary body in this invention is not limited to this drum-type rotary body, but an endless chain or an endless belt type. It goes without saying that a rotating body may be used.

[Brief description of the drawings]

FIG. 1 is a perspective view of a photo interrupter.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of both lead frames including a plurality of photo interrupters.

FIG. 4 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 4;

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

1 photointerrupter second light emitting element 3 receiving element 4 molded portion A _1, A ₂ leadframe 5,6 cleaning tank 8,9 rotator 11, 12, 14 transport means 15 and 17 the support portion 16 and 18 magnet body

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01L 31/12 H01L 21/50

Claims (1)

(57) [Claims] A rotating body that rotates about a substantially horizontal axis is provided in a cleaning tank containing a cleaning liquid so that the rotating body is immersed in the cleaning liquid in the cleaning tank. The two lead frames integrated in parallel with each other are placed on the rotating body in a posture substantially parallel to the axis of the rotating body, and the transport means is provided so as to be lifted from the rotating body. On the outer peripheral surface of the rotating body,
A plurality of support portions, at which the lower end edges of the two lead frames come into contact, and magnet bodies adapted to adsorb the two lead frames to the support portions are arranged at appropriate intervals along the circumferential direction. And a rotation driving means for intermittently rotating the rotating body at the pitch of the support portion. The cleaning apparatus for a lead frame for a photointerrupter.