CN202667737U

CN202667737U - Broken needle detector of printed circuit board (PCB) drilling machine

Info

Publication number: CN202667737U
Application number: CN 201220261136
Authority: CN
Inventors: 刘新强; 张庭主; 从宝龙; 周京; 胡林贵
Original assignee: Dalian Chongda Circuit Co Ltd
Current assignee: Dalian Chongda Circuit Co Ltd
Priority date: 2012-06-04
Filing date: 2012-06-04
Publication date: 2013-01-16
Anticipated expiration: 2022-06-04

Abstract

The utility model discloses a broken needle detector of a printed circuit board (PCB) drilling machine. The broken needle detector of the PCB drilling machine comprises the drilling machine, a pressure foot mounted on the drilling machine and drilling needles located in the axial lead of a circular ring hole of the pressure foot. A first induction optical fiber and a second induction optical fiber are mounted at the bottom of the pressure foot, an induction end of the first induction optical fiber and an induction end of the second induction optical fiber are located on two sides of the axial lead of the circular ring hole of the pressure foot, and a connection line of the induction end of the first induction optical fiber and the induction end of the second induction optical fiber perpendicularly intersects the axial lead of the circular ring hole of the pressure foot. Compared with the prior art, the broken needle detector of the PCB drilling machine has the advantages of being simple in structure, good in detection effect, high in efficiency, and not prone to erroneous detection.

Description

A kind of PCB drilling machine needle-break detection device

Technical field:

The utility model belongs to the wiring board manufacture technology field, and what be specifically related to is a kind of PCB drilling machine needle-break detection device.

Background technology:

Pcb board must get out onboard aperture and can insert by the stitch of element before plugging element; perhaps make the up and down conducting of circuit of different aspects; and along with the integrated level of pcb board is more and more higher; the quantity of the upper required boring of PCB is more and more, the aperture requires more and more less; therefore when using drilling machine that PCB is holed; the situation that broken needle often can occur, and just needs are in time additional in case broken needle occurs, to avoid quality problem occurring after the drilling holes on circuit board processing.

For the PCB quality problem that prevents from occurring because of broken needle, then must be when drilling machine be holed to PCB, the broken needle situation is detected, and to replenish drill point according to testing result, present detection mode mainly contains two kinds, a kind of is after current boring is finished, drilling machine broken needle situation is detected, then, replenish after the new drill point, the position redrilling that to not get into again, this mode efficient is lower; Another kind is to detect by the dust induction alarm, can correspondingly produce dust after the position boring that drill point is arranged, then can't hole to PCB in the position that broken needle occurs, and correspondence does not have dust yet, this mode is disturbed because near the dust the broken needle can produce the broken needle position, the problem of erroneous judgement occurs easily.

Summary of the invention:

For this reason, the purpose of this utility model is to provide a kind of PCB drilling machine needle-break detection device, with the problem that solves present PCB drilling machine broken pin test weak effect, efficient is low and easy appearance is judged by accident.

For achieving the above object, the utility model is mainly by the following technical solutions:

A kind of PCB drilling machine needle-break detection device, comprise drilling machine, be installed in the pressure foot on the drilling machine and be positioned at drill point on this pressure foot annulus hole axial line, described pressure foot bottom is equipped with the first induction optical fiber and the second induction optical fiber, the induction end of the induction end of described the first induction optical fiber and the second induction optical fiber is positioned at the axial line both sides in pressure foot annulus hole, and the axial line in the connecting line of the two and pressure foot annulus hole intersects vertically.

Also be provided with a passage that is communicated with pressure foot annulus hole on the wherein said pressure foot, this passage is connected with external blower by tracheae.

Wherein this device also comprises an infrared inductor, and this infrared inductor is connected with the first induction optical fiber, the second induction optical fiber by wire.

The utility model is by being arranged on pressure foot bottom and being in induction optical fiber on the same straight line, the boring behavior of drill point in pressure foot annulus hole detected, when broken needle occurring, connect by infrared ray between the two induction optical fiber, can measure accurately broken needle; And the dust that when boring produces can be blown away by the passage that is arranged on the pressure foot wall, avoided causing situation about judging by accident because of dust block induced optical fiber.Compared with prior art, the utlity model has simple in structure, detection is effective, efficient is high, be not prone to the advantage of erroneous judgement.

Description of drawings:

Fig. 1 is the perspective view of the utility model PCB drilling machine pressure foot.

Fig. 2 is the upward view of this Fig. 1.

Identifier declaration among the figure: pressure foot 1, axial line 101, annulus hole 2, passage 3, wire 4, the first induction optical fiber 5, induction end 501, the second induction optical fiber 6, induction end 601.

The specific embodiment:

For setting forth thought of the present utility model and purpose, below in conjunction with the drawings and specific embodiments the utility model is described further.

See also Fig. 1, shown in Figure 2, Fig. 1 is the perspective view of the utility model PCB drilling machine pressure foot; Fig. 2 is the upward view of this Fig. 1.The utility model provides a kind of PCB drilling machine needle-break detection device, the problem that be mainly used in solving present PCB drilling machine broken pin test weak effect, efficient is low and easy appearance is judged by accident.

Wherein this checkout gear comprises drilling machine, infrared inductor and the sense terminals equipment that is connected with infrared inductor, and pressure foot 1 is installed on the drilling machine, and the bottom that is positioned at pressure foot 1 then is pcb board to be holed.

Pressure foot 1 top is an annulus, the bottom is a supporting pad, it is annulus hole 2 in the annulus, drill point is positioned on the axial line 101 in annulus hole 2, the first induction optical fiber 5 and the second induction optical fiber 6 are installed in the bottom of pressure foot 1, the induction end 601 of the induction end 501 of described the first induction optical fiber 5 and the second induction optical fiber is positioned at above-mentioned axial line 101 both sides, and the connecting line of the two and this axial line 101 intersect vertically; Described first the induction optical fiber 5 be connected the induction optical fiber 6 all by wire 4 with the outside infrared inductor be connected, connect by infrared ray between the first induction optical fiber 5 and the second induction optical fiber 6 induction end under normal circumstances, when drill point is holed, infrared ray between the two is cut off, and this moment, infrared inductor was judged herein without broken needle according to the disabling signal that produces; If do not occur the situation of blocking-up between the first induction optical fiber 5 and the second induction optical fiber 6 induction end, then thinking does not have drill point to hole between the two, can judge that by infrared inductor broken needle is arranged herein.

For dust blocking-up the first induction optical fiber 5 and the second infrared connection of responding between the optical fiber 6 that prevents from producing because of boring, also be provided with the passage 3 of diameter a 1 ~ 2mm at the lateral wall of pressure foot 1, this passage 3 is connected with external blower by tracheae, and the dust that produces is blown away.

More than be that a kind of PCB drilling machine needle-break detection device provided by the utility model is described in detail, used specific case herein structural principle of the present utility model and embodiment are set forth, above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. PCB drilling machine needle-break detection device, comprise drilling machine, be installed in the pressure foot on the drilling machine and be positioned at drill point on this pressure foot annulus hole axial line, it is characterized in that described pressure foot bottom is equipped with the first induction optical fiber and the second induction optical fiber, the induction end of the induction end of described the first induction optical fiber and the second induction optical fiber is positioned at the axial line both sides in pressure foot annulus hole, and the axial line in the connecting line of the two and pressure foot annulus hole intersects vertically.

2. PCB drilling machine needle-break detection device according to claim 1 is characterized in that also being provided with on the described pressure foot passage that is communicated with pressure foot annulus hole, and this passage is connected with external blower by tracheae.

3. PCB drilling machine needle-break detection device according to claim 1 characterized by further comprising an infrared inductor, and this infrared inductor is connected with the first induction optical fiber, the second induction optical fiber by wire.