JPH031483Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to racking work in a plating process, and particularly relates to a racking device suitable for gold plating of ceramic packages.

[Conventional technology]

FIG. 6 is a perspective view showing a state in which the rack is hung conventionally by hand, and FIG. 7 is a perspective view of the main body rack. 1 is a plated product such as a ceramic package for a semiconductor integrated circuit, and conductive parts such as leads are plated with gold. 2 is covered product 1
3 is an individual product 1
A plurality of pairs of conductive pins are implanted in the middle assembly rack 2 to establish electrical continuity between the two conductive pins, and each pair of conductive pins locks the lead portion of the product 1. Reference numeral 4 denotes a tie bar notch provided in a tie bar connecting the lead portions of the product 1, which engages with the tip of the conductive pin 3. Reference numeral 5 denotes a main body rack, which suspends a plurality of middle assembly racks 2 and is immersed in a plating bath.

Using the middle assembly rack 2 configured as described above, a ceramic package 1, which is a covered product, is assembled.
When performing gold plating treatment, in order to establish electrical continuity with the plated portion of each ceramic package 1, two of the conductive pins 3 installed in the middle assembly rack 2 are used.
For each pair, the tip of the conductive pin 3 is manually engaged with the tie bar notch 4 of the ceramic package 1 and suspended, and this operation is repeated.
Place a predetermined number of ceramic packages 1 into the middle assembly rack 2.
Attach to. Then, a large number of middle assembly racks 2, each with a ceramic package 1 attached thereto, are transported to a plating factory, where the inner assembly racks 2 are attached to the main body rack 5.
A predetermined number of ceramic packages 1 are attached, and the attached main body rack 5 is hung on a conveying device of a plating line, and gold plating is applied to each surface of the ceramic package 1 to be treated.

[Problem that the invention attempts to solve]

In the conventional racking work as described above, the ceramic packages were manually locked one by one to the conductive pins of the middle assembly rack.
Defects such as lead bending are unavoidable, and in particular, tie bars caused by the worker's easy hooking up of the product specifications require that the product's gold-plated contacts should not peel off anywhere other than the tie bar notches on the side leads. There was a problem that the contacts would peel off due to mistakes such as forgetting to insert them into the notches. In addition, since the racking was done manually one by one, the number of man-hours required for preparation for the plating process increased, leading to high costs and long lead times, which could lead to delays in delivery. .

This idea was created to solve the problems of conventional racking work as described above. It automates the racking work to improve yield, reduce processing costs, and shorten lead time. The purpose is to do so.

[Means for solving problems]

The plating rack hanging device according to this invention has a suction head that picks up the plated products in a supply cassette one row at a time and moves them to a feeding conveyor, and a middle rack that sets a plurality of middle racks and feeds them one by one in pitch order. a rack arranging conveyor, a suction pitch expanding device for widening the pitches of the plated products closely fed by the feeding conveyor to a predetermined interval, and a pair of left and right middle assembly racks by advancing positioning plates with V-shaped notches from both sides. Insert the conductive pin while positioning it with the V-shaped notch, and guide the mated product, which has been released from suction by the suction bit expanding device, on the inclined surfaces of the left and right positioning jigs, and place it on the both positioning plates. and a positioning device that engages and holds the conductive pin with the covered product by moving the product and retracting both the positioning plates.

(Function) In the plating rack hanging device according to this invention, a plurality of product-filled PVC trays containing plated products are set in a supply cassette, and a plurality of medium-sized racks are arranged on a conveyor. .

Then, by turning on the start button, the coated products are picked up one by one from the supply cassette, transferred onto the feed conveyor, and transferred to the positioning device.
A suction pitch expanding device spreads the pitch to a pitch corresponding to the conductive pin spacing of the middle assembly rack. On the other hand, the middle racks are conveyed in pitch by the middle rack arrangement conveyor and are temporarily stopped on the positioning device.
At this point, move the positioning plates on both sides of the positioning device forward so that they approach each other, and while positioning the multiple conductive pins (one pair each on the left and right sides of the middle assembly rack) using the V-shaped notches, insert the left and right conductive pins in between. The gap is shortened, and in this state, the spread product is released from adsorption and dropped, guided by the inclined surface of the positioning jig provided on both positioning plates, and placed on both positioning plates for left and right conduction. It is transferred across the pin. Next, when both positioning plates are moved back away from each other, the left and right conductive pins expand each other by their own elastic restoring force and lock into the tie bar notches of the leads of the mated product. After that, the middle rack holding a predetermined number of coated products is conveyed to the next process by the pitch feed of the middle rack arranging conveyor.
Attach to the main body easily. By repeating each of the above operations, the racking work is automatically and continuously performed.

[Example of idea]

FIG. 1 is a plan view schematically showing a twisting and racking device according to an embodiment of the invention, and FIG. 2 is an enlarged front view showing the operation of the suction pitch expanding device. 3 is an enlarged side view showing the operation of the suction bit expanding device and the middle assembly rack positioning device (an enlarged side view taken along line B-B in FIG. 1), and FIG. 4 is an enlarged side view showing the operation of the positioning device. FIG. 5 is an enlarged side view showing the details, and FIG. 5 is a perspective view showing the rack hanging state.

In the figure, 1 indicates a ceramic package which is a covered product, and 2 indicates an inner rack. 3a, 3
Reference numeral b designates conductive pins which are installed in rows on the left and right sides of the middle assembly rack 2, respectively, and elastically lock and hold the ceramic package 1. 4
are tie bar notches of ceramic package 1, 6
7 is a storage cassette that stores empty PVC trays 62, 8 is a take-out suction head, 9 is a take-out cylinder that reciprocates the take-out suction head 8, and 10 is a feed conveyor. , 11 is a suction pitch expanding device, 12 is a vacuum chuck, and 13 is a link connecting a plurality of vacuum chucks 12 so that the pitch can be changed. The link 13 has an elongated hole 13a that engages with a pin 12a of the vacuum chuck 12 body. 14 is a pitch expanding cylinder; 15 is a guide rod that slidably supports the vacuum chuck 12;
16 is a pitch feeding cylinder that reciprocates the suction pitch expanding device 11 in the horizontal direction by one pitch;
Reference numeral 16a indicates a cylinder for raising and lowering the suction bit expanding device, 17 indicates a middle assembly rack arranging conveyor (endless belt), 20 indicates a positioning device, and 21 indicates a movable member for positioning of the positioning device 20. The positioning movable member 21 includes a pair of left and right movable members 21a and 21b.
Consists of. 22a and 22b are both movable members 21
V-shaped notches 2 that are fixed to the upper ends of a and 21b and engage with conductive pins 3a and 3b, respectively.
It has 2c and 22b. (Fig. 5) 23a and 23b are both positioning plates 22a and 22b.
The positioning jigs projecting upward form inclined guide surfaces 23a- ₁ and 23b- ₁ , respectively.
24 is a rack positioning rotor, 25a and 25b are rack gears, and 26 is a vertical movement cylinder, which moves the positioning device 20 up and down between a rack position and a retracted position.

Next, the operation of the plating and racking device of this invention constructed as described above will be explained, mainly with reference to FIG. 1 and partially with reference to FIGS. 2 to 5.

A product-containing PVC tray 61 in which a large number of ceramic package cages 1, which are coated products, are arranged and stored,
A plurality of stages, for example 20 stages, are set in the supply cassette 6.

Further, a plurality (approximately 10 pieces) of the middle racks 2 are set horizontally on the middle rack arrangement conveyor 17 so that their conductive pins 3a, 3b are facing upward (in FIG. 1, the conductive pins 3a, 3b are omitted, but see Figure 3). Once these preparations have been completed,
When the start button is pressed, as shown in FIG.
The packages 1 are suctioned row by row, horizontally retreated to above the feed conveyor 10 by contraction of the cylinder 9, the suction is released, and the package 1 is transferred onto the feed conveyor 10. The package cage 1 follows the rotation of the feed conveyor 10.
is transferred to the suction pitch expanding device 11 (right end in FIG. 1).

On the other hand, the middle assembly rack arranging conveyor 17 is provided at the right end of the feed conveyor 10, that is, at the position where the suction pitch expanding device 11 is located, directly below the feed conveyor 10. In Figure 1, the lower side is the upstream side.

This suction pitch expanding device 11 is disposed above the middle package rack arranging conveyor 17 upstream of the positioning device 20, and it collects a plurality of rows of packages 1 that are closely conveyed by the feed conveyor 10 as shown in FIG. As shown in FIG.
Adsorb with.

Next, the suction pitch expanding device 11 is lifted to a predetermined height by the operation of the lifting cylinder 16a, and the vacuum chuck 12, which is slidably supported by the guide rod 15, is moved so that its pin 12a is in the elongated hole 13a of the connecting link 13. The middle assembly rack 2 is moved by the pitch expanding cylinder 14 so as to come into contact with the inner part in the longitudinal direction.
The pitch is expanded to match the pitch of the conductive pins 3a, 3b (2, 3a, 3b are not shown in FIG. 2). Pitch feed cylinder 16 (second
(not shown in the figure), the vacuum chuck 1
2 to just above the positioning device 20.

On the other hand, the middle racks 2 are pitch-fed by the middle rack arrangement conveyor 17, and the positioning device 2
When it reaches the 0 position, it stops once. Here, the state in which the package is attached to the conductive pin 3 of the middle assembly rack 2 will be explained with reference to FIGS. 3, 4, and 5. Movable member 2 for left and right positioning
1a and 21b are in the open state, the positioning device 20 is raised so as to sandwich the middle assembly rack 2 by extension of the vertical movement cylinder 26, the rack positioning rotor 24 is rotated clockwise, and the rack gears 25a,
25b, the positioning plates 22a and 22b are moved closer to each other, and the respective V-shaped notches 2
2a- ₁ , 22b- ₁ to the conductive pin 3 of the middle assembly rack 2.
a, 3b are engaged and inserted, and the conductive pins 3a,
3b is elastically deformed and shortened, and the middle assembly rack 2 is positioned.

At this time, the distance between the tips of the inclined guide surfaces 23a- ₁ and 23b- ₁ of the positioning jigs 22a and 23b is approximately equal to the distance between the left and right leads of the ceramic package 1.

In this state, the lifting cylinder 16a is operated as shown in FIG.
By lowering the package 1 to a predetermined position and releasing the suction, the package 1 is transferred onto the positioning device 20 with the tie bars on both sides guided by both inclined surfaces of the positioning jigs 23a and 23b.

Next, when the rack positioning rotor 24 is rotated counterclockwise, both the positioning plates 22a, 22b move away from each other, and both the conductive pins 3a, 3
The grip of b is released, and the positioning device 20 descends and returns to the retracted position. At this time, the freed conductive pins 3a, 3b have their distal ends engaged with the tie bar notches 4 (see FIG. 5) of the package 1 by elastic restoration. With this, package 1
is reliably maintained. Note that the tie bar notch and the notch of the positioning plate are configured to be in the same location, so that positioning can be easily performed.

After that, the suction pitch expanding device 11 rises and returns to the top of the feed conveyor 10, and the plurality of packages 1
The middle assembly racks 2 holding the parts are conveyed in pitches by the sorting conveyor 17, and are sequentially attached to the main body racks in the next process.

By repeating these operations in a predetermined cycle time, for example, 5 seconds, the plating and smoothing work can be performed automatically, and the ceramic package 1 will not be soiled or peeled off due to manual work by an operator. Also, careless bending of the lead can be avoided.

[Effect of idea]

As explained above, this invention is designed to mechanically perform the racking work on the inner assembly rack during the gold plating process of ceramic packages, which greatly reduces the occurrence of defects such as dirt defects, peeling off, and lead bending. This results in an improvement in product yield, a reduction in processing costs, and a reduction in lead time.

[Brief explanation of drawings]

Figures 1 to 5 are diagrams showing one embodiment of this invention. Figure 1 is a plan view showing the outline of the fitting and racking device, and Figure 2 is an enlarged view of the suction pitch expanding device taken along line AA in Figure 1. Front view, Figure 3 is the same as Figure 1.
An enlarged side view of the middle assembly rack positioning device on the BB line, Fig. 4 is an enlarged operation diagram of the positioning device, Fig. 5
The figure is an enlarged perspective view showing the rack hanging state, FIG. 6 is a perspective view showing a conventional rack hanging, and FIG. 7 is a perspective view of the main body rack. In the figure, 1 is a fitted product, 2 is a middle assembly rack, 3, 3a, 3b are conductive pins, 4 is a tie bar notch, 5 is a main body rack, 6 is a supply cassette, 7 is an empty tray storage cassette, and 8 is a Take-out suction head, 9 is a take-out cylinder, 10 is a feed conveyor, 11 is a suction pitch expanding device, 12 is a vacuum chuck, 13 is a link, 14 is a pitch expanding cylinder, 15 is a guide rod, 16 is a pitch feeding cylinder, 16a 17 is a lifting cylinder, 17 is a middle assembly rack arrangement conveyor, 20 is a positioning device, 21
a, 21b are movable members, 21a _-1 , 21b _-1 are V-shaped notches, 22a, 22b are positioning plates with V-shaped notches, 23a, 23b are positioning jigs with inclined guide surfaces, 23a _-1 , 23b _-1 is an inclined guide surface, 24
2 is a rack positioning rotor, 25a and 25b are rack gears, and 26 is an upper and lower cylinder. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A suction head that picks up coated products in a supply cassette one row at a time and transfers them to the feed conveyor, a middle rack arrangement conveyor that sets a plurality of middle racks and feeds them one by one in sequence, and the above-mentioned feed conveyor. A suction pitch expanding device expands the pitch of the closely-fed plated products to a predetermined interval, and a positioning plate with V-shaped notches is advanced from both sides to connect the pair of left and right conductive pins of the middle assembly rack to the V-shape. The mated product, which has been sandwiched while being positioned by the notch and released from suction by the suction pitch expanding device, is guided by the inclined guide surfaces of the left and right positioning jigs and transferred onto the positioning plate, and then placed on the positioning plate. A plating racking device comprising: a positioning device that engages and holds the conductive pin with the plated product by retracting the plate.