CN2884792Y

CN2884792Y - Structure for replacing bad units in printed circuit board

Info

Publication number: CN2884792Y
Application number: CN 200520147459
Authority: CN
Inventors: 杨合卿
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-30
Filing date: 2005-12-30
Publication date: 2007-03-28
Anticipated expiration: 2015-12-30

Abstract

The utility model relates to a structure for replacing bad units in printed circuit board which cuts out and removes the bad part of a bad unit to leave a blank and cuts out a good part matching the blank from the other bad printed circuit board to fill the blank in the original printed circuit board. To improve the accuracy in aligning, a plurality of embedding slots are arranged at the border of the blank in the original printed circuit board and the match good part has a plurality of tenons while one or more pair of teeth is provided on the coupling surface of the tenons and the embedding slots. Moreover, a smaller frame border is cut around the blank to form an inner margin with unfilled corner on the edge to facilitate the combination. The frame outer border of the good part is cut more to form an outer margin with unfilled corner to form a special combination structure.

Description

The structure that replacing bad element is handled in the printed circuit board (PCB)

Technical field

The utility model relates to the structure that replacing bad element is handled in a kind of printed circuit board (PCB), particularly a kind of structure that engages replacing bad element processing in the higher printed circuit board (PCB) of precision.

Background technology

The recovery of existing common bad printed circuit board (PCB) increases again builds structure, at first propose the circuit board recovery is re-used, because circuit board varies, for convenience on making and saving cost, the circuit board of monoblock counting unit need not be abandoned, that is to lose the greater for less, the mode of common utilization cutting, take out good circuit board from second substrate, and circuit board bad on first original substrate is cut, then good circuit board is located go back to the room of first substrate, this is not any good method in fact, the action of general so-called replacement just; Topmost structure is to be provided with the recessed T groove of number in empty place, and good circuit board has the outstanding T sheet of number, carries out winding with this counter structure; But following shortcoming is arranged in the actual use, because T groove and T sheet are to be distributed in periphery, and be positioned on two assemblies, add after the nargin, on existing equipment,, be impossible reaching of task to little size and precision like this, in fact have very big side-play amount, only can on some large-sized circuit boards, do something once in a while; In addition, little circuit board unit can't use unexpectedly because of the utilization relation of area; And the coordinate offset of winding more has influence on the assembling stability of follow-up electronic building brick plug-in unit.

The utility model content

The purpose of this utility model is to overcome the above-mentioned defective that exists in the prior art, and the structure that replacing bad element is handled in a kind of printed circuit board (PCB) is provided, and improvement is with the bad state of prelocalization.

For achieving the above object, the utility model adopts following technical scheme:

Have when being detected a defective products in the former printed circuit board (PCB) of counting unit when one, to move apart after the cutting of defective products cellular zone, form the dead zone, and then also contain in the printed circuit board (PCB) of defective products in another, the dead zone of inserting former printed circuit board (PCB) is moved in the cutting of non-defective unit unit, the precision that aligns for raising, the structure that replacing bad element is handled in the utility model printed circuit board (PCB), periphery is provided with several caulking grooves in the dead zone of former printed circuit board (PCB), also there is teat the non-defective unit unit of each caulking groove correspondence, and teat is provided with a pair of above dentation with the corresponding end face of caulking groove.

Owing to adopted technique scheme, compared with prior art, the utility model adopts multipoint mode location, single place, allows the space reduce to minimum, has improved the precision of winding, has also improved the permanence of winding, more heat shock resistance, and it is required to conform to the follow-up course of processing.

As further improvement of the utility model, engage for convenient, in week in above-mentioned dead zone periphery is cut less frame shape, interior week forms the unfilled corner inner edge inwardly, and the frame shape periphery of non-defective unit unit is bigger in cutting.Improvement makes the mode combination with overlap joint into, the carrying out of the more convenient course of processing with the bad state of prelocalization.

Description of drawings

Fig. 1 is the schematic top plan view of the utility model after detecting.

Fig. 2 is that the utility model is in the schematic top plan view of getting from defective products.

Fig. 3 is that the utility model is illustrated and the part enlarged drawing in taking out overlooking of non-defective unit.

Fig. 4 is the utility model does not enter the dead zone in non-defective unit a schematic top plan view.

Fig. 5 is that the utility model is in combination back schematic top plan view.

Fig. 6 is the schematic top plan view of another execution mode of the utility model.

Fig. 7 is the cross-sectional figure of the circuit board of the utility model Fig. 6.

Fig. 8 is the non-defective unit unit sectional side elevation of the utility model Fig. 6.

Fig. 9 is the cross-sectional figure in non-defective unit unit of the utility model Fig. 6.

Figure 10 is the cross-sectional figure after the utility model Fig. 6 combination.

Embodiment

Extremely shown in Figure 5 as Fig. 1, the structure that replacing bad element is handled in the utility model printed circuit board (PCB), has counting unit 10a when one, 10b, 10c, 10d, 10e, when being detected a defective products unit 10a in the former printed circuit board (PCB) 10 of 10f, to move apart after the cutting of 10a district, defective products unit, form dead zone 10g, and then also contain defective products (more than at least two in another, among the figure for having three

non-defective unit unit

20a, 20c, 20e, three

defective products unit

20b, 20d, in the printed circuit board (PCB) 20 20f), 20a cutting in non-defective unit unit is moved, insert the dead zone 10g of former printed circuit board (PCB) 10, the precision that aligns for raising, be provided with several caulking grooves 12 at the dead zone of former printed circuit board (PCB) 10 10g periphery, the non-defective unit unit 20a of each caulking groove 12 correspondence also has teat 21, and teat 21 is provided with a pair of above dentation with the corresponding end face of caulking groove 12; Wherein teat and caulking groove are wavy or tip-angled shape or square shape; That is to say that the periphery of each unit of

circuit board

10,20 is equipped with

teat

11,21, the dead zone is equipped with caulking

groove

12,22, to make things convenient for winding.

Each unit to each printed circuit board (PCB) detects (Fig. 1); When wherein being detected a defective products unit in the former printed circuit board (PCB),, form the dead zone with moving apart after the cutting of defective products cell position; Periphery is provided with several caulking grooves in the dead zone of former printed circuit board (PCB), and each caulking groove has the dentation depression (Fig. 2) more than two; Have in the printed circuit board (PCB) of at least one non-defective unit unit in another, will move apart after the cutting of non-defective unit unit; Be provided with several teats at non-defective unit unit periphery also correspondence, each teat has the detent projection (Fig. 3) more than two; This place, dead zone (Fig. 4) is inserted in this non-defective unit unit that moves apart; The corresponding position of teat and caulking groove is carried out a glue and is closed (Fig. 5) admittedly with the high adhesive agent of permeability.

In addition, engage, to another execution mode shown in Figure 10, cut less shape (just the frame shape is less than aforementioned embodiments), also form unfilled corner inner edge 13 under the ring-type inwardly in the bottom surface in interior week at the dead zone of former printed circuit board (PCB) 10 10g as Fig. 6 for convenient; Have in the printed circuit board (PCB) 20 of at least one non-defective unit unit 20a in another, cut big shape (greater than the dead zone), in the end face of periphery and form unfilled corner outer rim 23 on the ring-type inwardly at non-defective unit unit 20a periphery.At this moment can directly non-defective unit unit 20a be pasted the 10g place, district of making the return trip empty, use aforesaid adhesive agent to glue together again, the finished product of being finished is more smooth.And aforementioned two kinds of structures together can be implemented.

In sum, the utility model utilization printed circuit board (PCB) is to form a full sheet (connection sheet panel) by a plurality of unit (monolithic pieces), when monolithic not good (NG person among the figure) will replace with good (OK person among the figure), saving the cost that full sheet is scrapped, and can utilize the continuous production of machinery because of the structure that is adopted, putting multi-multipoint winding precision of being gone with unit is higher than before, and be easy to winding, make lap jointing type into, its chimeric Du Gengjia, evenness is better, so good usability can be provided.

The detailed description of above-mentioned preferred embodiment of the present utility model is not to be used for limiting the utility model, and protection range of the present utility model is as the criterion with claims.

Claims

1. the structure that replacing bad element is handled in the printed circuit board (PCB) has counting unit on each printed circuit board (PCB); It is characterized in that,

One former printed circuit board (PCB) has the dead zone of at least one defective products unit, at the dead zone periphery several caulking grooves is arranged, and each caulking groove has the dentation depression more than two;

Have the separated at least one non-defective unit unit of energy in another printed circuit board (PCB), be provided with several teats at non-defective unit unit periphery also correspondence, each teat has the dentation more than two.

2. the structure that replacing bad element is handled in the printed circuit board (PCB) as claimed in claim 1 is characterized in that described teat and caulking groove are wavy or tip-angled shape or square shape.

3. the structure that replacing bad element is handled in the printed circuit board (PCB) as claimed in claim 1 is characterized in that described former printed circuit board (PCB) has the dead zone of at least one defective products unit, and the bottom surface in week is a unfilled corner inner edge under the ring-type inwardly also in the dead zone.

Have in another printed circuit board (PCB) can be separated at least one non-defective unit unit, at the end face of non-defective unit unit periphery and be unfilled corner outer rim on the ring-type inwardly.