CN108990409B

CN108990409B - Automatic vision detection device

Info

Publication number: CN108990409B
Application number: CN201810810493.3A
Authority: CN
Inventors: 何伟锋; 何楚亮
Original assignee: Zhejiang Kelaishi Technology Co Ltd
Current assignee: Zhejiang kelaishi Technology Co., Ltd
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2020-11-10
Anticipated expiration: 2038-07-23
Also published as: CN108990409A

Abstract

The invention discloses a visual automatic detection device, wherein a test clamping assembly is arranged on the upper end side of a fixed supporting plate of a rack, a robot mounting seat, an oscilloscope and a universal meter are arranged on the upper surface of the fixed supporting plate, a movable mounting seat is screwed on a driving end of a six-axis robot at the upper end part of the robot mounting seat, an insulating mounting block, a camera mounting seat and a light source mounting seat are screwed on the movable mounting seat, a conductive test needle is clamped and fixed by the insulating mounting block, a CCD industrial camera is screwed on the camera mounting seat, and an annular light source is screwed on the light source mounting seat; the test clamping assembly comprises a lower end fixing plate, an upper end fixing plate, a supporting upright post, a front end movable clamping strip, a front end quick clamp, a locking handle screw, a rear end fixing clamping strip, a left side positioning datum strip, a rear side positioning datum strip, a horizontal clamping plate, a follow-up mounting block and a driving screw rod; the automatic visual detection device also comprises a controller and an intermediate relay. Through the structural design, the invention has the advantages of novel design, high automation degree and high test efficiency.

Description

Automatic vision detection device

Technical Field

The invention relates to the technical field of automation equipment, in particular to an automatic visual detection device.

Background

PCBA is the abbreviation of English Printed Circuit Board + Assembly, that is to say PCB blank Board passes SMT to be loaded, passes through the whole process of DIP plug-in components, is called PCBA for short. In the case of a PCB, after the PCB is processed, the IC components of the PCB need to be tested, such as resistance test and capacitance test.

It should be noted that, in the prior art, a manual auxiliary multimeter or oscilloscope is generally adopted to test the PCB, which has low working efficiency and high labor cost.

Disclosure of Invention

The invention aims to provide an automatic visual detection device aiming at the defects of the prior art, which has novel structural design, high automation degree and high test efficiency.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

A visual automatic detection device comprises a rack, wherein a fixed support plate which is horizontally and transversely arranged is screwed at the upper end of the rack, a test clamping assembly is arranged at the upper end side of the fixed support plate, a robot mounting seat is screwed at the side of the test clamping assembly on the upper surface of the fixed support plate, a six-axis robot is screwed at the upper end part of the robot mounting seat, a movable mounting seat is screwed at the driving end of the six-axis robot, an insulating mounting block is screwed at the movable mounting seat, and an inherent conductive test needle is clamped in the insulating mounting block; a camera mounting seat and a light source mounting seat positioned right below the camera mounting seat are screwed on the side of the movable mounting seat, which is positioned on the conductive test needle, a CCD industrial camera is screwed on the camera mounting seat, and an annular light source positioned right below the CCD industrial camera is screwed on the light source mounting seat;

the test clamping assembly comprises a lower end fixing plate arranged on the upper end side of the fixed supporting plate and an upper end fixing plate which is positioned right above the lower end fixing plate and is arranged at intervals with the lower end fixing plate, the lower end fixing plate and the upper end fixing plate are respectively arranged horizontally and transversely, a supporting upright post which is arranged vertically is arranged between the upper end fixing plate and the lower end fixing plate, the upper end part of the supporting upright post is in threaded connection with the upper end fixing plate, and the lower end part of the supporting upright post is in threaded connection; the middle position of the upper surface of the upper end fixing plate is provided with a fixing plate accommodating groove which is upward opened and is rectangular, the fixing plate accommodating groove can be embedded with a front end movable clamping strip in a front-back movable manner relatively, the width value between the left end edge and the right end edge of the front end movable clamping strip is equal to the width value between the left end edge and the right end edge of the fixing plate accommodating groove, the edge part of the rear end of the front end movable clamping strip is provided with a clamping strip bearing surface which is parallel and level with the upper surface of the upper end fixing plate, the upper surface of the front end movable clamping strip is screwed with a front end guide rail horizontally extending along the left-right direction at the rear end side of the clamping strip bearing surface, the upper end side of the front end guide rail is provided with at least two front end quick clamps which are sequentially arranged from left to right at intervals, each front end quick clamp is screwed with a front end slide block corresponding to the front end; the left end part and the right end part of the front end movable clamping strip are respectively provided with locking handle screws in a threaded manner, the left end part and the right end part of the bottom surface of the fixed plate accommodating groove are respectively provided with locking threaded holes which are uniformly distributed at intervals along the front-back direction, and when the front end movable clamping strip moves back and forth to a designated position, the locking handle screws are respectively screwed in the locking threaded holes at corresponding positions so as to realize locking and fixing of the front end movable clamping strip;

the upper surface of the upper end fixing plate is provided with a rear end fixing clamping strip which horizontally extends along the left-right direction at the rear end side of the fixing plate accommodating groove in a screwed manner, the upper surface of the rear end movable clamping strip is provided with a rear end guide rail which horizontally extends along the left-right direction in a screwed manner, the upper end side of the rear end guide rail is provided with at least two rear end quick clamps which are sequentially arranged from left to right at intervals, each rear end quick clamp is respectively provided with a rear end sliding block in a screwed manner corresponding to the rear end guide rail, and each rear end sliding block is respectively matched with the rear end guide rail;

the left end part of the upper end fixing plate is screwed with a left side positioning reference bar horizontally extending along the front-back direction on the left end side of the fixing plate accommodating groove, and the left side positioning reference bar and the left end edge of the fixing plate accommodating groove are arranged at intervals; the rear end part of the upper end fixing plate is screwed with a rear positioning reference bar horizontally extending along the left-right direction on the front end side of the rear end fixing clamping bar, the rear positioning reference bar is positioned on the rear end side of the fixing plate accommodating groove, and the rear positioning reference bar and the rear end edge of the fixing plate accommodating groove are arranged at intervals;

the upper end side of the front end movable clamping strip is provided with a horizontal clamping plate which horizontally extends along the left-right direction and is vertically arranged above a bearing surface of the clamping strip in a front-back movable manner, the front end side of the front end movable clamping strip on the horizontal clamping plate is provided with a follow-up mounting block in a screw manner, the follow-up mounting block is provided with a mounting block threaded hole which completely penetrates in the front-back direction, a driving screw rod horizontally extends along the front-back direction is screwed in the mounting block threaded hole of the follow-up mounting block, the front end part of the driving screw rod extends to the front end side of the follow-up mounting block, and the rear end part of the driving screw rod extends to the rear end side of the follow-; a clamping plate guide rail horizontally extending forwards is arranged on the horizontal clamping plate in a threaded manner, a clamping plate sliding block is arranged on the front end movable clamping strip corresponding to the clamping plate guide rail in a threaded manner, and the clamping plate sliding block is matched with the clamping plate guide rail;

the upper surface of the fixed supporting plate is also provided with an oscilloscope and a universal meter, the rack is provided with a controller, and the six-axis robot, the CCD industrial camera and the annular light source are respectively and electrically connected with the controller; the automatic visual detection device also comprises an intermediate relay, wherein the intermediate relay is provided with an A power connection end, a B power connection end, a C power connection end and a D power connection end, the A power connection end of the intermediate relay is electrically connected with the conductive test pin through a wire, the B power connection end of the intermediate relay is electrically connected with the oscilloscope through a wire, the C power connection end of the intermediate relay is electrically connected with the multimeter through a wire, and the D power connection end of the intermediate relay is electrically connected with the controller through a wire; when the controller does not output a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the B connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the C connection end; when the controller outputs a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the C connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the B connection end.

The middle position of the bottom surface of the fixing plate accommodating groove is provided with a fixing plate through hole which is completely penetrated from top to bottom, the upper surface of the lower end fixing plate is provided with at least two auxiliary push rods which are arranged at intervals and respectively extend vertically, and the upper end of each auxiliary push rod extends into the fixing plate through hole.

The invention has the beneficial effects that: the invention relates to a visual automatic detection device, which comprises a rack, wherein a fixed supporting plate which is horizontally and transversely arranged is screwed at the upper end part of the rack, a test clamping assembly is arranged at the upper end side of the fixed supporting plate, a robot mounting seat is screwed at the side of the test clamping assembly on the upper surface of the fixed supporting plate, a six-axis robot is screwed at the upper end part of the robot mounting seat, a movable mounting seat is screwed at the driving end of the six-axis robot, an insulating mounting block is screwed at the movable mounting seat, and an inherent conductive test needle is clamped in the insulating mounting block; a camera mounting seat and a light source mounting seat positioned right below the camera mounting seat are screwed on the side of the movable mounting seat, which is positioned on the conductive test needle, a CCD industrial camera is screwed on the camera mounting seat, and an annular light source positioned right below the CCD industrial camera is screwed on the light source mounting seat; the test clamping assembly comprises a lower end fixing plate arranged on the upper end side of the fixed supporting plate and an upper end fixing plate which is positioned right above the lower end fixing plate and is arranged at intervals with the lower end fixing plate, the lower end fixing plate and the upper end fixing plate are respectively arranged horizontally and transversely, a supporting upright post which is arranged vertically is arranged between the upper end fixing plate and the lower end fixing plate, the upper end part of the supporting upright post is in threaded connection with the upper end fixing plate, and the lower end part of the supporting upright post is in threaded connection; the middle position of the upper surface of the upper end fixing plate is provided with a fixing plate accommodating groove which is upward opened and is rectangular, the fixing plate accommodating groove can be embedded with a front end movable clamping strip in a front-back movable manner relatively, the width value between the left end edge and the right end edge of the front end movable clamping strip is equal to the width value between the left end edge and the right end edge of the fixing plate accommodating groove, the edge part of the rear end of the front end movable clamping strip is provided with a clamping strip bearing surface which is parallel and level with the upper surface of the upper end fixing plate, the upper surface of the front end movable clamping strip is screwed with a front end guide rail horizontally extending along the left-right direction at the rear end side of the clamping strip bearing surface, the upper end side of the front end guide rail is provided with at least two front end quick clamps which are sequentially arranged from left to right at intervals, each front end quick clamp is screwed with a front end slide block corresponding to the front end; the left end part and the right end part of the front end movable clamping strip are respectively provided with locking handle screws in a threaded manner, the left end part and the right end part of the bottom surface of the fixed plate accommodating groove are respectively provided with locking threaded holes which are uniformly distributed at intervals along the front-back direction, and when the front end movable clamping strip moves back and forth to a designated position, the locking handle screws are respectively screwed in the locking threaded holes at corresponding positions so as to realize locking and fixing of the front end movable clamping strip; the upper surface of the upper end fixing plate is provided with a rear end fixing clamping strip which horizontally extends along the left-right direction at the rear end side of the fixing plate accommodating groove in a screwed manner, the upper surface of the rear end movable clamping strip is provided with a rear end guide rail which horizontally extends along the left-right direction in a screwed manner, the upper end side of the rear end guide rail is provided with at least two rear end quick clamps which are sequentially arranged from left to right at intervals, each rear end quick clamp is respectively provided with a rear end sliding block in a screwed manner corresponding to the rear end guide rail, and each rear end sliding block is respectively matched with the rear end guide rail; the left end part of the upper end fixing plate is screwed with a left side positioning reference bar horizontally extending along the front-back direction on the left end side of the fixing plate accommodating groove, and the left side positioning reference bar and the left end edge of the fixing plate accommodating groove are arranged at intervals; the rear end part of the upper end fixing plate is screwed with a rear positioning reference bar horizontally extending along the left-right direction on the front end side of the rear end fixing clamping bar, the rear positioning reference bar is positioned on the rear end side of the fixing plate accommodating groove, and the rear positioning reference bar and the rear end edge of the fixing plate accommodating groove are arranged at intervals; the upper end side of the front end movable clamping strip is provided with a horizontal clamping plate which horizontally extends along the left-right direction and is vertically arranged above a bearing surface of the clamping strip in a front-back movable manner, the front end side of the front end movable clamping strip on the horizontal clamping plate is provided with a follow-up mounting block in a screw manner, the follow-up mounting block is provided with a mounting block threaded hole which completely penetrates in the front-back direction, a driving screw rod horizontally extends along the front-back direction is screwed in the mounting block threaded hole of the follow-up mounting block, the front end part of the driving screw rod extends to the front end side of the follow-up mounting block, and the rear end part of the driving screw rod extends to the rear end side of the follow-; a clamping plate guide rail horizontally extending forwards is arranged on the horizontal clamping plate in a threaded manner, a clamping plate sliding block is arranged on the front end movable clamping strip corresponding to the clamping plate guide rail in a threaded manner, and the clamping plate sliding block is matched with the clamping plate guide rail; the upper surface of the fixed supporting plate is also provided with an oscilloscope and a universal meter, the rack is provided with a controller, and the six-axis robot, the CCD industrial camera and the annular light source are respectively and electrically connected with the controller; the automatic visual detection device also comprises an intermediate relay, wherein the intermediate relay is provided with an A power connection end, a B power connection end, a C power connection end and a D power connection end, the A power connection end of the intermediate relay is electrically connected with the conductive test pin through a wire, the B power connection end of the intermediate relay is electrically connected with the oscilloscope through a wire, the C power connection end of the intermediate relay is electrically connected with the multimeter through a wire, and the D power connection end of the intermediate relay is electrically connected with the controller through a wire; when the controller does not output a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the B connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the C connection end; when the controller outputs a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the C connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the B connection end. Through the structural design, the invention has the advantages of novel structural design, high automation degree and high test efficiency.

Drawings

The invention will be further described with reference to the drawings to which, however, the embodiments shown in the drawings do not constitute any limitation.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the test clamping assembly of the present invention.

Fig. 3 is a schematic structural view of another view of the test clamping assembly of the present invention.

Fig. 1 to 3 include:

1-frame 11-fixed supporting plate

2-testing clamping component 211-lower end fixing plate

212-upper fixing plate 2121-fixing plate accommodating groove

2122 locking screw hole 2123 fixing plate through hole

22-front end movable clamping strip 221-clamping strip bearing surface

231-front end guide rail 232-front end quick clamp

233 front slide block 24 locking handle screw

25-rear end fixing holding strip 261-rear end guide rail

262-rear end quick clamp 263-rear end slide block

271-left side positioning reference bar 272-right side positioning reference bar

281-horizontal clamping plate 282-follow-up mounting block

283-driving screw 284-clamping plate guide rail

285-clamping plate slide block 29-auxiliary top rod

31-robot mounting base 32-six-axis robot

4-movable mounting seat 51-insulating mounting block

52-conductive test pin 61-camera mounting seat

62-CCD industrial camera 71-light source mounting base

72-annular light source.

Detailed Description

The present invention will be described below with reference to specific embodiments.

As shown in fig. 1 to 3, an automatic visual inspection device includes a frame 1, a fixed support plate 11 horizontally and transversely arranged is screwed on an upper end of the frame 1, a test clamping assembly 2 is screwed on an upper end side of the fixed support plate 11, a robot mounting seat 31 is screwed on an upper surface of the fixed support plate 11 on a side of the test clamping assembly 2, a six-axis robot 32 is screwed on an upper end of the robot mounting seat 31, a movable mounting seat 4 is screwed on a driving end of the six-axis robot 32, an insulating mounting block 51 is screwed on the movable mounting seat 4, and a conductive test pin 52 is fastened on the insulating mounting block 51; the movable mounting seat 4 is provided with a camera mounting seat 61 and a light source mounting seat 71 which is positioned right below the camera mounting seat 61 by a screw at the side of the conductive test needle 52, the camera mounting seat 61 is provided with a CCD industrial camera 62 by a screw, and the light source mounting seat 71 is provided with an annular light source 72 which is positioned right below the CCD industrial camera 62 by a screw.

Further, the test clamping assembly 2 includes a lower end fixing plate 211 installed on the upper end side of the fixed supporting plate 11, and an upper end fixing plate 212 located right above the lower end fixing plate 211 and arranged at an interval with the lower end fixing plate 211, the lower end fixing plate 211 and the upper end fixing plate 212 are respectively arranged horizontally and transversely, a supporting upright column arranged vertically is installed between the upper end fixing plate 212 and the lower end fixing plate 211, the upper end portion of the supporting upright column is screwed with the upper end fixing plate 212, and the lower end portion of the supporting upright column is screwed with the lower end fixing plate 211; a fixing plate accommodating groove 2121 which is opened upwards and is rectangular is formed in the middle of the upper surface of the upper end fixing plate 212, a front end movable clamping strip 22 is movably embedded in the fixing plate accommodating groove in a front-back manner, the width between the left end edge and the right end edge of the front end movable clamping strip 22 is equal to the width between the left end edge and the right end edge of the fixing plate accommodating groove 2121, a clamping strip bearing surface 221 which is flush with the upper surface of the upper end fixing plate 212 is arranged at the rear end edge of the front end movable clamping strip 22, a front end guide rail 231 which horizontally extends along the left-right direction is screwed on the rear end side of the clamping strip bearing surface 221 on the upper surface of the front end movable clamping strip 22, at least two front end quick clamps 232 which are sequentially arranged at intervals from left to right are arranged on the upper end side of the front end guide rail 231, front end sliding blocks 233 are respectively screwed on the front end quick clamps 232 corresponding to the front end guide rail 231, and each front end sliding block 233 is; the left end and the right end of the front movable clamping strip 22 are respectively screwed with locking handle screws 24, the left end and the right end of the bottom surface of the fixing plate accommodating groove 2121 are respectively provided with locking threaded holes 2122 which are uniformly distributed at intervals along the front-back direction, and when the front movable clamping strip 22 moves back and forth to a designated position, the locking handle screws 24 are respectively screwed into the locking threaded holes 2122 at corresponding positions, so that the front movable clamping strip 22 is locked and fixed.

Furthermore, the upper surface of the upper end fixing plate 212 is screwed with a rear end fixing clamping strip 25 horizontally extending along the left-right direction at the rear end side of the fixing plate accommodating groove 2121, the upper surface of the rear end movable clamping strip is screwed with a rear end guide rail 261 horizontally extending along the left-right direction, the upper end side of the rear end guide rail 261 is provided with at least two rear end quick clamps 262 sequentially arranged from left to right at intervals, each rear end quick clamp 262 is screwed with a rear end slider 263 corresponding to the rear end guide rail 261, and each rear end slider 263 is respectively matched with the rear end guide rail 261.

In addition, a left positioning reference bar 271 horizontally extending along the front-rear direction is screwed to the left end side of the fixing plate accommodating groove 2121 at the left end portion of the upper end fixing plate 212, and the left positioning reference bar 271 and the left edge of the fixing plate accommodating groove 2121 are arranged at intervals; a rear positioning reference bar horizontally extending in the left-right direction is screwed to the rear end of the upper end fixing plate 212 at the front end side of the rear end fixing gib 25, the rear positioning reference bar is located at the rear end side of the fixing plate accommodating groove 2121, and the rear positioning reference bar and the rear end edge of the fixing plate accommodating groove 2121 are arranged at an interval.

A horizontal clamping plate 281 which horizontally extends along the left-right direction and is vertically arranged is movably arranged on the upper end side of the front end movable clamping strip 22 right above the clamping strip bearing surface 221 in a front-back manner, a follow-up mounting block 282 is screwed on the front end side of the horizontal clamping plate 281 on the front end movable clamping strip 22, a mounting block threaded hole which completely penetrates through the follow-up mounting block 282 in the front-back direction is formed in the follow-up mounting block 282, a driving screw 283 which horizontally extends along the front-back direction is screwed in the mounting block threaded hole of the follow-up mounting block 282, the front end part of the driving screw 283 extends to the front end side of the follow-up mounting block 282, and the rear end part of the driving screw 283 extends to the rear end side of the follow-up mounting block 282; the horizontal clamping plate 281 is provided with a clamping plate guide rail 284 horizontally extending forwards in a threaded manner, the clamping plate slide block 285 is arranged on the front end movable clamping strip 22 corresponding to the clamping plate guide rail 284 in a threaded manner, and the clamping plate slide block 285 is matched with the clamping plate guide rail 284.

It should be further noted that an oscilloscope and a universal meter are also installed on the upper surface of the fixed supporting plate 11, the frame 1 is equipped with a controller, and the six-axis robot 32, the CCD industrial camera 62 and the annular light source 72 are respectively electrically connected with the controller; the automatic visual detection device also comprises an intermediate relay, wherein the intermediate relay is provided with an A power connection end, a B power connection end, a C power connection end and a D power connection end, the A power connection end of the intermediate relay is electrically connected with the conductive test pin 52 through a wire, the B power connection end of the intermediate relay is electrically connected with an oscilloscope through a wire, the C power connection end of the intermediate relay is electrically connected with a multimeter through a wire, and the D power connection end of the intermediate relay is electrically connected with the controller through a wire; when the controller does not output a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the B connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the C connection end; when the controller outputs a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the C connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the B connection end.

In the process of clamping and fixing the PCB by the test clamping assembly 2, a worker places the test PCB on the upper surface of the upper end fixing plate 212, abuts the left end edge of the PCB against the left side positioning reference bar 271 to position the left end edge of the PCB, and abuts the rear end edge of the PCB against the rear side positioning reference bar to position the rear end edge of the PCB; after the PCB is placed and positioned, the driving screw 283 is rotated, the horizontal clamping plate 281 is pushed forwards through the driving screw 283, the horizontal clamping plate 281 is translated backwards and clamps the PCB tightly, and therefore the horizontal clamping and positioning of the PCB are achieved; after the PCB is horizontally clamped and positioned, the front end of the PCB is rapidly clamped 232 and clamped on the clamping strip bearing surface 221 of the front end movable clamping strip 22, the rear end of the PCB is rapidly clamped 262, the rear end of the PCB is clamped, and the PCB is clamped and fixed.

For the front end movable clamping strip 22 of the present invention, it can move back and forth along the fixing plate accommodating groove 2121, so that the distance between the front end movable clamping strip 22 and the rear end fixed clamping strip 25 is adapted to the front and rear edge width of the PCB, i.e. the present invention can realize the clamping operation of PCB with different dimensions.

It should be explained that a fixing plate through hole 2123 completely penetrating from top to bottom is formed in the middle of the bottom surface of the fixing plate accommodating groove 2121, at least two auxiliary push rods 29 extending vertically and arranged at intervals are screwed on the upper surface of the lower end fixing plate 211, and the upper end of each auxiliary push rod 29 extends into the fixing plate through hole 2123. In the process of clamping and fixing the PCB by the test clamping assembly 2, the auxiliary ejector rod 29 can play a role of auxiliary support.

In the working process of the invention, the controller controls the six-axis robot 32, the CCD industrial camera 62 and the annular light source 72 to act, the six-axis robot 32 moves the CCD industrial camera 62 and the conductive test needle 52 to be right above the PCB, the CCD industrial camera 62 acquires the image data of the PCB and sends the image data to the controller, and the controller processes and analyzes the image data of the PCB to acquire the position of the IC element; after the position of the IC component is determined, the six-axis robot 32 moves the lead test pin to the IC component position and contacts the IC component.

When the IC element needs to be subjected to resistance testing, the controller outputs a control signal to the intermediate relay, the A connection end of the intermediate relay is connected with the C connection end circuit, the A connection end of the intermediate relay is disconnected with the B connection end circuit, and the universal meter is used for carrying out resistance testing on the IC element. When the IC element needs to be subjected to capacitance test, and the controller does not output a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the B connection end, the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the C connection end, and the oscilloscope performs capacitance test on the IC element at the moment.

By combining the above conditions, the invention has the advantages of novel structural design, high automation degree and high test efficiency.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A visual automatic detection device is characterized in that: the test device comprises a rack (1), wherein a fixed support plate (11) which is horizontally and transversely arranged is screwed at the upper end of the rack (1), a test clamping assembly (2) is arranged at the upper end side of the fixed support plate (11), a robot mounting seat (31) is screwed on the upper surface of the fixed support plate (11) at the side of the test clamping assembly (2), a six-axis robot (32) is screwed at the upper end of the robot mounting seat (31), a movable mounting seat (4) is screwed at the driving end of the six-axis robot (32), an insulating mounting block (51) is screwed at the movable mounting seat (4), and a conductive test needle (52) is clamped and fixed on the insulating mounting block (51); a camera mounting seat (61) and a light source mounting seat (71) located right below the camera mounting seat (61) are screwed on the side, located on the conductive test needle (52), of the movable mounting seat (4), a CCD industrial camera (62) is screwed on the camera mounting seat (61), and an annular light source (72) located right below the CCD industrial camera (62) is screwed on the light source mounting seat (71);

the test clamping assembly (2) comprises a lower end fixing plate (211) arranged on the upper end side of the fixed supporting plate (11), and an upper end fixing plate (212) which is positioned right above the lower end fixing plate (211) and is arranged at intervals with the lower end fixing plate (211), wherein the lower end fixing plate (211) and the upper end fixing plate (212) are respectively arranged horizontally and transversely, a supporting upright post which is arranged vertically is arranged between the upper end fixing plate (212) and the lower end fixing plate (211), the upper end part of the supporting upright post is in threaded connection with the upper end fixing plate (212), and the lower end part of the supporting upright post is in threaded connection with the lower; a fixing plate accommodating groove (2121) which is opened upwards and is rectangular is formed in the middle of the upper surface of the upper end fixing plate (212), a front end movable clamping strip (22) is movably embedded in the fixing plate accommodating groove in a front-back manner, the width between the left end edge and the right end edge of the front end movable clamping strip (22) is equal to the width between the left end edge and the right end edge of the fixing plate accommodating groove (2121), a clamping strip bearing surface (221) which is parallel and level to the upper surface of the upper end fixing plate (212) is arranged at the rear end edge part of the front end movable clamping strip (22), a front end guide rail (231) which horizontally extends along the left-right direction is screwed on the upper surface of the front end movable clamping strip (22) at the rear end side of the clamping strip bearing surface (221), at least two front end quick clamps (232) which are sequentially arranged from left to right at intervals are arranged on the upper end side of the front end guide rail (231), and a front end sliding block (233) is respectively screwed on each front end quick clamp (232) corresponding, each front end slide block (233) is respectively matched with the front end guide rail (231); the left end part and the right end part of the front end movable clamping strip (22) are respectively provided with locking handle screws (24), the left end part and the right end part of the bottom surface of the fixing plate accommodating groove (2121) are respectively provided with locking threaded holes (2122) which are uniformly distributed at intervals along the front-back direction, and when the front end movable clamping strip (22) moves back and forth to a specified position, the locking handle screws (24) are respectively screwed in the locking threaded holes (2122) at corresponding positions so as to realize the locking and fixing of the front end movable clamping strip (22);

the upper surface of the upper end fixing plate (212) is provided with a rear end fixing clamping strip (25) horizontally extending along the left-right direction in a screwed manner on the rear end side of the fixing plate accommodating groove (2121), the upper surface of the rear end movable clamping strip is provided with a rear end guide rail (261) horizontally extending along the left-right direction in a screwed manner, the upper end side of the rear end guide rail (261) is provided with at least two rear end quick clamps (262) sequentially arranged at intervals from left to right, each rear end quick clamp (262) is respectively provided with a rear end sliding block (263) in a screwed manner corresponding to the rear end guide rail (261), and each rear end sliding block (263) is respectively matched with the rear end guide rail (261);

a left positioning reference bar (271) horizontally extending along the front-back direction is screwed on the left end side of the fixing plate accommodating groove (2121) at the left end part of the upper end fixing plate (212), and the left positioning reference bar (271) and the left edge of the fixing plate accommodating groove (2121) are arranged at intervals; a rear positioning reference bar horizontally extending along the left-right direction is screwed on the rear end part of the upper end fixing plate (212) at the front end side of the rear end fixing clamping bar (25), the rear positioning reference bar is positioned at the rear end side of the fixing plate accommodating groove (2121), and the rear positioning reference bar and the rear end edge of the fixing plate accommodating groove (2121) are arranged at intervals;

a horizontal clamping plate (281) which horizontally extends along the left-right direction and is vertically arranged is movably arranged on the upper end side of the front-end movable clamping strip (22) right above a clamping strip bearing surface (221) relatively in a front-back manner, a follow-up mounting block (282) is screwed on the front end side of the horizontal clamping plate (281) of the front-end movable clamping strip (22), a mounting block threaded hole which completely penetrates in the front-back direction is formed in the follow-up mounting block (282), a driving screw rod (283) which horizontally extends along the front-back direction is screwed in the mounting block threaded hole of the follow-up mounting block (282), the front end part of the driving screw rod (283) extends to the front end side of the follow-up mounting block (282), and the rear end part of the driving screw rod (283) extends to the rear end side of the follow-up mounting block (282; a clamping plate guide rail (284) horizontally extending forwards is screwed on the horizontal clamping plate (281), a clamping plate sliding block (285) is screwed on the clamping plate guide rail (284) corresponding to the clamping plate guide rail (284) on the front end movable clamping strip (22), and the clamping plate sliding block (285) is matched with the clamping plate guide rail (284);

the upper surface of the fixed supporting plate (11) is also provided with an oscilloscope and a universal meter, the rack (1) is provided with a controller, and the six-axis robot (32), the CCD industrial camera (62) and the annular light source (72) are respectively and electrically connected with the controller; the automatic visual detection device also comprises an intermediate relay, wherein the intermediate relay is provided with an A power connection end, a B power connection end, a C power connection end and a D power connection end, the A power connection end of the intermediate relay is electrically connected with a conductive test needle (52) through a wire, the B power connection end of the intermediate relay is electrically connected with an oscilloscope through a wire, the C power connection end of the intermediate relay is electrically connected with a multimeter through a wire, and the D power connection end of the intermediate relay is electrically connected with a controller through a wire; when the controller does not output a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the B connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the C connection end; when the controller outputs a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the C connection end, and the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the B connection end;

a fixing plate through hole (2123) which completely penetrates through the fixing plate accommodating groove (2121) from top to bottom is formed in the middle of the bottom surface of the fixing plate accommodating groove, at least two auxiliary ejector rods (29) which are arranged at intervals and respectively extend vertically are screwed on the upper surface of the lower end fixing plate (211), and the upper end part of each auxiliary ejector rod (29) extends into the fixing plate through hole (2123);

in the process of clamping and fixing the PCB by the testing clamping assembly (2), placing the testing PCB on the upper surface of the upper end fixing plate (212), abutting the left end edge of the PCB against the left side positioning reference bar (271) to position the left end edge of the PCB, and abutting the rear end edge of the PCB against the rear side positioning reference bar to position the rear end edge of the PCB; after the PCB is placed and positioned, the driving screw (283) is rotated, the horizontal clamping plate (281) is pushed forwards through the driving screw (283), the horizontal clamping plate (281) translates backwards and clamps the PCB tightly, so that the horizontal clamping and positioning of the PCB are realized; after the PCB is horizontally clamped and positioned, closing the front-end quick clamp (232) and clamping the edge part of the front end of the PCB on the clamping strip bearing surface (221) of the front-end movable clamping strip (22), closing the rear-end quick clamp (262) and clamping the edge part of the rear end of the PCB, and further realizing clamping and fixing of the PCB;

in the process of testing the IC element, the controller controls the six-axis robot (32), the CCD industrial camera (62) and the annular light source (72) to act, the six-axis robot (32) moves the CCD industrial camera (62) and the conductive test needle (52) to the position right above the PCB, the CCD industrial camera (62) acquires image data of the PCB and sends the image data to the controller, and the controller processes and analyzes the image data of the PCB to obtain the position of the IC element; after the position of the IC component is determined, the six-axis robot (32) moves the guide test needle to the position of the IC component and contacts the IC component; when the IC element needs to be subjected to resistance testing, the controller outputs a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the C connection end, the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the B connection end, and at the moment, the universal meter performs resistance testing on the IC element; when the IC element needs to be subjected to capacitance test, and the controller does not output a control signal to the intermediate relay, the circuit of the A connection end of the intermediate relay is conducted with the circuit of the B connection end, the circuit of the A connection end of the intermediate relay is disconnected with the circuit of the C connection end, and the oscilloscope performs capacitance test on the IC element at the moment.