A device and method for rapidly detecting the quality of SMT patches

Abstract

The application discloses a kind of fast detection SMT patch quality device and method, including conveying line, and the top side of conveying line rear end is provided with sorting mechanism, and the outer wall on the top side of conveying line is welded with stand, and drive mechanism is arranged on the stand, and drive mechanism is installed with echo detector above conveying line, drive mechanism includes the rotating shaft installed on stand, and one end of rotating shaft is fixedly installed with crankshaft, and the end away from rotating shaft of crankshaft is fixedly provided with bearing seat, bearing seat is inserted with transmission rod in its inside, and one end of transmission rod is welded with fixed plate.The application mainly generates multidimensional echo signal by echo detector, the form of SMT patch on conveying line is shot by echo detector and transmitted to controller, and displayed on display, while it can be compared with reference picture or data input in storage module, SMT patch exceeding specified range will be marked, greatly shorten the inspection time and improve the inspection qualified rate of product.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of SMT patch technology, and particularly relates to a device and method for rapidly detecting SMT patch quality. BACKGROUND

[0002] SMT patch refers to a series of process flow for processing on the basis of PCB, and PCB refers to printed circuit board. SMT is surface mount technology, which is the most popular process and technology in the electronic assembly industry. Electronic circuit surface mount technology is referred to as surface mount or surface mount technology. It is a circuit connection technology that installs a pinless or short lead surface mount component (referred to as SMC / SMD, referred to as a sheet-shaped component in Chinese) on the surface of a printed circuit board or the surface of other substrates, and is welded and assembled through reflow soldering or immersion soldering.

[0003] Compared with the traditional through-hole insertion technology, SMT has the advantages of compact structure, high assembly density, small size, small quality, good high-frequency characteristics, good anti-vibration and impact resistance, which is beneficial to improve the reliability of products. In addition, SMT process is simple, has fewer welding defects, is suitable for automatic production, has high production efficiency, low labor intensity, and reduces production cost. Therefore, in recent years, SMT has developed rapidly and has become the mainstream of the world's electronic complete machine assembly technology.

[0004] In the SMT patch process, defects such as virtual welding and missing welding may occur. For slight virtual welding, manual inspection cannot avoid missed detection, and the inspection efficiency is low. There may also be defects in the internal components of the incoming materials, which must be inspected by equipment. The existing ultrasonic detection equipment on the market can solve such problems to a certain extent, but the scanning speed is slow and the detection environment is high. Therefore, it is urgent to design a device and method for rapidly detecting SMT patch quality to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a device and method for rapidly detecting SMT patch quality to solve the above problems in the prior art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] The utility model provides a device for detecting SMT patch quality fast, including conveying line, the top one side of conveying line rear end is provided with sorting mechanism, the outer wall of top one side of conveying line is welded with stand, and is provided with transmission mechanism on stand, the transmission mechanism is installed with the echo detector above conveying line, the transmission mechanism includes the pivot that is installed on the stand, and one end of pivot is fixedly installed with the crankshaft, the one end away from pivot of crankshaft is fixedly installed with bearing seat, the inside insertion of bearing seat has transmission rod, one end of transmission rod is welded with fixed plate, the echo detector is fixedly installed on the outer wall of fixed portion bottom through bolt, the outer wall on one side of crankshaft is fixed with motor through frame, and the output shaft of motor is installed with driving gear, the outer wall on one end of transmission rod is fixedly installed with the driven gear that is engaged with driving gear, the outer wall on one side of stand is fixedly installed with positive and negative rotation motor, the output shaft of positive and negative rotation motor is installed with transmission chain through gear, the outer wall on one end of pivot is fixedly installed with transmission wheel that is transmission connection with transmission chain, the outer wall on one side of top of conveying line is welded with fixed rod, and the fixed rod is fixed with display and controller through bolt.

[0008] Further, the conveying line includes two symmetrically distributed side plates, the outer wall of the bottom end of the side plate is welded with a support leg, and the outer wall of the bottom end of the support leg is welded with a pad, the outer wall of one side of the side plate is fixedly provided with a mounting seat through a bolt, and a servo motor is fixedly provided on the mounting seat, a speed reducer is fixedly installed on the outer wall of one side of the side plate and is in transmission connection with the servo motor, rollers are arranged at both ends of the two side plates, and the rollers are in transmission connection with the conveying belt outside.

[0009] Further, the outer walls of both ends of the side plate are welded with end plates, and the end plates are semicircular structures.

[0010] Further, the outer surface of the conveying belt is provided with a region line, and the conveying belt is divided into two sorting areas and one conveying area by the region line.

[0011] Further, the outer walls of both sides of the top of the conveying line are fixedly provided with infrared position sensors through bolts, and the bottom of the infrared position sensor is provided with a lifting adjusting device.

[0012] Further, the sorting mechanism includes a fixed seat fixed to the outer wall on one side of the top of the conveying line, and a driving member is fixed to one side of the fixed seat through a bolt, one end of the driving member is provided with an extension rod, and the outer wall of one end of the extension rod is welded with a push plate.

[0013] Further, the extension rod is of a bent structure, and the gap between the push plate and the conveying line is 1-3 cm.

[0014] Further, the front end of the controller is electrically connected with the echo detector, a storage module is connected to the controller, the rear end of the controller is electrically connected with a comparison module, and the controller is electrically connected with a display.

[0015] Further, an image processing module is arranged between the controller and the echo detector, and a reference picture is stored in the storage module.

[0016] A method for rapidly detecting SMT patch quality comprises the following steps.

[0017] S1, start the conveying line and the echo detector, and place the SMT patches on the conveying line for conveying.

[0018] S2, when the infrared position sensor detects that the SMT patch is about to approach the echo detector, the transmission mechanism on the echo detector triggers movement, the positive and negative rotation motor drives the transmission chain and the rotating shaft to rotate, and the rotating shaft drives the crankshaft to swing, which can drive the transmission rod to swing greatly, realize tracking detection of the SMT patch on the conveying line, and at the same time, the motor is started, the motor drives the driving gear and the driven gear to move synchronously, drives the transmission rod to rotate, and thus the shooting angle of the echo detector is adjusted well until the echo detector moves from the front of the conveying line to the rear of the conveying line for shooting, and at the same time, the servo motor of the conveying line is stopped, the echo detector is reset, and then the conveying line is started again to realize detection of the SMT patch, and the above actions are repeated.

[0019] S3, the data image detected by the echo detector is transmitted to the controller, after being processed by the image processing module, the controller retrieves the picture of the normal SMT patch from the storage module, and compares in the comparison module, and the picture shot by the echo detector can be displayed in the display, after comparison by the comparison module, the good and the defective SMT patches are distinguished, and the defective SMT patches are marked.

[0020] S4, the marked defective SMT patches continue to be conveyed along with the conveying line until the defective SMT patches enter the sorting mechanism, the driving piece of the sorting mechanism is started to drive the telescopic rod to move, so that the push plate moves the defective SMT patches from the conveying area on the conveying line to the sorting area, that is, the automatic detection of the SMT patches is completed.

[0021] In the above technical solution, the SMT patch on the conveying line is shot by the echo detector and transmitted to the controller, and displayed on the display, and at the same time, the reference picture or data input in the storage module is compared, the SMT patch exceeding the specified range is marked, the inspection time is greatly shortened, and the product inspection qualified rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0023] Figure 1 The structural schematic diagram provided for the device and method for quickly detecting SMT patch quality.

[0024] Figure 2 The sorting mechanism structural schematic diagram provided for the device and method for quickly detecting SMT patch quality.

[0025] Figure 3 The transmission mechanism structural schematic diagram provided for the device and method for quickly detecting SMT patch quality.

[0026] Figure 4 The left view of the transmission mechanism structural schematic diagram provided for the device and method for quickly detecting SMT patch quality.

[0027] Figure 5 The control flow chart provided for the device and method for quickly detecting SMT patch quality.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1 conveying line, 2 side plate, 3 supporting leg, 4 mounting seat, 5 servo motor, 6 speed reducer, 7 end plate, 8 roller shaft, 9 conveying belt, 10 area line, 11 conveying area, 12 sorting area, 13 infrared position sensor, 14 sorting mechanism, 15 stand column, 16 transmission mechanism, 17 echo detector, 18 fixed rod, 19 display, 20 controller, 21 fixed seat, 22 driving piece, 23 telescopic rod, 24 push plate, 25 rotating shaft, 26 crankshaft, 27 transmission rod, 28 fixed plate, 29 motor, 30 driving gear, 31 driven gear, 32 bearing seat, 33 forward and reverse motor, 34 transmission wheel, 35 transmission chain, 36 image processing module, 37 storage module, 38 reference picture, 39 comparison module. DETAILED DESCRIPTION

[0030] In order to make those skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail with reference to the drawings.

[0031] As Figures 1-5As shown, the device for quickly detecting SMT patch quality provided by the embodiment of the application comprises a conveying line 1, a sorting mechanism 14 arranged on the top side of the rear end of the conveying line 1, a stand column 15 welded on the outer wall of the top side of the conveying line 1, a transmission mechanism 16 arranged on the stand column 15, a back wave detector 17 installed above the conveying line 1 and on the transmission mechanism 16, the transmission mechanism 16 comprising a rotating shaft 25 installed on the stand column 15, a crankshaft 26 fixedly installed on one end of the rotating shaft 25, a bearing seat 32 fixedly arranged on the end of the crankshaft 26 away from the rotating shaft 25, a transmission rod 27 inserted into the bearing seat 32, a fixed plate 28 welded on one end of the transmission rod 27, the back wave detector 17 fixedly installed on the outer wall at the bottom of the fixed plate 28 through bolts, a motor 29 fixed on the outer wall on one side of the crankshaft 26 through a rack, a driving gear 30 installed on the output shaft of the motor 29, a driven gear 31 fixedly installed on the outer wall of one end of the transmission rod 27 and engaged with the driving gear 30, a forward-reverse motor 33 fixedly installed on the outer wall on one side of the stand column 15, a transmission chain 35 installed on the output shaft of the forward-reverse motor 33 through a gear, a transmission wheel 34 fixedly installed on the outer wall of one end of the rotating shaft 25 and in transmission connection with the transmission chain 35, a fixed rod 18 welded on the outer wall of one side of the top of the conveying line 1, and a display 19 and a controller 20 fixedly arranged on the fixed rod 18 through bolts.

[0032] Specifically, in the embodiment, the conveying line 1 is provided, uniform and stable conveying of SMT patches is realized through the conveying line 1, a sorting mechanism 14 is arranged on the top side of the rear end of the conveying line 1, through the sorting mechanism 14, the good and defective SMT patches can be sorted, a stand 15 is welded on the outer wall of the top side of the conveying line 1, a transmission mechanism 16 is arranged on the stand 15, a back wave detector 17 is installed above the conveying line 1, the transmission mechanism 16 drives the back wave detector 17 to move, realizes omnibearing shooting detection of the SMT patches on the conveying line 1, ensures the detection precision of the SMT patches, the transmission mechanism 16 comprises a rotating shaft 25 installed on the stand 15, a crankshaft 26 is fixedly installed at one end of the rotating shaft 25, a bearing seat 32 is fixedly arranged at the end, away from the rotating shaft 25, of the crankshaft 26, a transmission rod 27 is inserted into the bearing seat 32, a fixed plate 28 is welded at one end of the transmission rod 27, the back wave detector 17 is fixedly installed on the outer wall at the bottom of the fixed plate 28 through bolts, a motor 29 is fixed on the outer wall of one side of the crankshaft 26 through a rack, a driving gear 30 is installed on the output shaft of the motor 29, a driven gear 31 meshing with the driving gear 30 is fixedly installed on the outer wall of one end of the transmission rod 27, a reversible motor 33 is fixedly installed on the outer wall of one side of the stand 15, a transmission chain 35 is installed on the output shaft of the reversible motor 33 through a gear, a transmission wheel 34 drivingly connected with the transmission chain 35 is fixedly installed on the outer wall of one end of the rotating shaft 25, a fixed rod 18 is welded on the outer wall of one side of the top of the conveying line 1, and a display 19 and a controller 20 are fixedly arranged on the fixed rod 18 through bolts.

[0033] The device and method for rapidly detecting the quality of SMT patches provided by the application mainly generate multi-dimensional echo signals through the back wave detector 17, shoot the form of the SMT patches on the conveying line 1 through the back wave detector 17, transmit the form to the controller 20, display the form on the display 19, compare the form with the reference pictures or data input in the storage module 37, and mark the SMT patches exceeding the specified range, so that the detection time is greatly shortened and the detection qualified rate of products is improved.

[0034] In an embodiment of the application, the conveying line 1 comprises two symmetrically distributed side plates 2, support legs 3 are welded on the outer walls of the bottom ends of the side plates 2, and cushion blocks are welded on the outer walls of the bottom ends of the support legs 3, mounting seats 4 are fixedly arranged on the outer walls of one side of the side plates 2 through bolts, and servo motors 5 are fixedly arranged on the mounting seats 4, speed reducers 6 drivingly connected with the servo motors 5 are fixedly installed on the outer walls of one side of the side plates 2, roller shafts 8 are arranged at the two ends of the two side plates 2, and conveying belts 9 are drivingly connected with the roller shafts 8, the servo motors 5 drive the speed reducers 6 to move, and the roller shafts 8 drive the conveying belts 9 to rotate, so that the SMT patches are conveyed, and the servo motors 5 facilitate the control of the speed and movement of the conveying line 1.

[0035] The end plate 7 is welded on the outer wall of both ends of the side plate 2 and has a semicircular structure, is installed on both ends of the side plate 2 through the end plate 7, and guarantees the stability and safety of the whole conveying line 1.

[0036] The outer surface of the conveying belt 9 is provided with a region line 10, the conveying belt 9 is divided into two sorting areas 12 and one conveying area 11 through the region line 10, the SMT patch is placed in the conveying area 11 for conveying, and the defective product picked out by the sorting mechanism enters the inside of the sorting area 12 for conveying, so that the purpose of quickly sorting the SMT patch is achieved.

[0037] As another embodiment provided by the application, the outer wall on both sides of the top of the conveying line 1 is fixedly installed with an infrared position sensor 13 through a bolt, the bottom of the infrared position sensor 13 is provided with a lifting adjusting device, the height of the infrared position sensor 13 can be adjusted through the lifting adjusting device, the use of SMT patch detection of different specifications is met, and the lifting adjusting mechanism can be a lead screw transmission mechanism.

[0038] As another embodiment provided by the application, the sorting mechanism 14 includes a fixed seat 21 fixed on the outer wall on one side of the top of the conveying line 1, one side of the fixed seat 21 is fixedly provided with a driving piece 22 through a bolt, one end of the driving piece 22 is provided with a telescopic rod 23, and the outer wall of one end of the telescopic rod 23 is welded with a push plate 24, the driving piece 22 is started, the driving motor 22 drives the telescopic rod 23 to move, so that the push plate 24 conveys the defective product from the conveying area 11 into the inside of the sorting area 12;

[0039] The telescopic rod 23 has a bending type structure, the gap between the push plate 24 and the conveying line 1 is 1 cm, and the gap between the push plate 24 and the conveying belt 9 is 1 cm, so that the sorting mechanism can stably sort the SMT patch.

[0040] As another embodiment provided by the application, the front end of the controller 20 is electrically connected with the echo detector 17, the controller 20 is connected with a storage module 37, the rear end of the controller 20 is electrically connected with a comparison module 39, and the controller 20 is electrically connected with the display 19.

[0041] The image processing module 36 is arranged between the controller 20 and the echo detector 17, the storage module 37 has a reference picture 38 stored in the inside, and the reference picture 38 is a good product picture of the SMT patch when normally welded, that is, when the image detected by the echo detector 17 is different from the reference picture 38, the SMT patch is defined as a defective product.

[0042] A method for quickly detecting the quality of an SMT patch comprises the following steps:

[0043] S1, start the conveying line 1 and the echo detector 17, and place the SMT patches on the conveying line 1 for conveying;

[0044] S2, when the infrared position sensor 13 detects that the SMT patch is about to approach the echo detector 17, the transmission mechanism 16 on the echo detector 17 triggers movement at this time, rotates the transmission chain 35 and the rotating shaft 25 through the forward and reverse motor 33, and swings the crankshaft 26 through the rotating shaft 25, which can drive the transmission rod 27 to swing greatly, realize tracking detection of the SMT patch on the conveying line 1, and at the same time, the motor 29 is started, the driving gear 30 and the driven gear 31 are synchronously moved by the motor 29, and the transmission rod 28 is rotated, so that the shooting angle of the echo detector 17 is well adjusted until the echo detector 17 is moved from the front of the conveying line 1 to the rear of the conveying line 1 for shooting, and after shooting is completed, the servo motor 5 of the conveying line 1 is stopped, and then the echo detector 17 is reset, and then the conveying line 1 is started again to realize detection of the SMT patch, and the above-mentioned actions are cycled;

[0045] S3, the data image detected by the echo detector 17 is transmitted to the controller 20, after being processed by the image processing module 36, the normal SMT patch picture is called from the storage module 37 by the controller 20, and compared in the comparison module 39, and the picture shot by the echo detector 17 can be displayed in the display 19, after comparison by the comparison module 39, the good and the defective SMT patches are distinguished, and the defective SMT patches are well marked;

[0046] S4, the marked defective SMT patches continue to be conveyed along with the conveying line 1 until the defective SMT patches enter the sorting mechanism 14, the driving piece 22 of the sorting mechanism 14 is started to drive the telescopic rod 23 to move, so that the push plate 24 moves the defective SMT patches from the conveying area 11 on the conveying line 1 to the sorting area 12, that is, the automatic detection work of the SMT patch is completed.

[0047] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A kind of method for rapidly detecting SMT patch quality, the device for rapidly detecting SMT patch quality is adopted, including conveying line (1), the top side of the rear end of conveying line (1) is provided with sorting mechanism (14), the outer wall of the top side of conveying line (1) is welded with stand (15), and transmission mechanism (16) is arranged on stand (15), transmission mechanism (16) is installed with echo detector (17) located above conveying line (1), transmission mechanism (16) includes the rotating shaft (25) installed on stand (15), and one end of rotating shaft (25) is fixedly installed with crankshaft (26), the end away from rotating shaft (25) of crankshaft (26) is fixedly provided with bearing seat (32), the inside of bearing seat (32) is inserted with transmission rod (27), one end of transmission rod (27) is welded with fixed plate (28), echo detector (17) is fixedly installed on the outer wall at the bottom of fixed plate (28) by bolt, the outer wall on one side of crankshaft (26) is fixed with motor (29) by rack, and the output shaft of motor (29) is installed with driving gear (30), the outer wall on one end of transmission rod (27) is fixedly installed with driven gear (31) meshing with driving gear (30), the outer wall on one side of stand (15) is fixedly installed with forward and reverse motor (33), the output shaft of forward and reverse motor (33) is installed with transmission chain (35) by gear, the outer wall on one end of rotating shaft (25) is fixedly installed with transmission wheel (34) driving connection with transmission chain (35), the outer wall on one side of the top of conveying line (1) is welded with fixed rod (18), and display (19) and controller (20) are fixed on fixed rod (18) by bolt; characterized in that Including the following steps: S1, start conveying line (1) and echo detector (17), and place SMT patch evenly on conveying line (1) and convey; S2, when infrared position sensor (13) detects that SMT patch will be close to echo detector (17), transmission mechanism (16) on echo detector (17) triggers motion at this time, rotates transmission chain (35) and rotating shaft (25) by forward and reverse motor (33), and swings crankshaft (26) by rotating shaft (25), can drive transmission rod (27) to swing greatly, realizes the tracking detection of SMT patch on conveying line (1), while motor (29) starts, driving gear (30) and driven gear (31) synchronous motion by motor (29), drive transmission rod (27) to rotate, so as to adjust the shooting angle of echo detector (17) well, until echo detector (17) moves from the front of conveying line (1) to the back of conveying line (1) and completes shooting, while the servo motor (5) of conveying line (1) stops, then reset echo detector (17), then start conveying line (1) and realize the detection of SMT patch, according to the above action cycle is carried out; S3, the data detected by the echo detector (17) is transmitted to the controller (20), and after being processed by the image processing module (36), the normal SMT patch picture is retrieved from the storage module (37) by the controller (20), and compared in the comparison module (39), and the picture taken by the echo detector (17) can be displayed in the display (19), and after the comparison of the comparison module (39) is completed, the good and bad products of the SMT patch are distinguished, and the bad products are marked; S4, the marked substandard products continue to be conveyed along with the conveying line (1) until the substandard products enter the sorting mechanism (14), the driving part (22) of the sorting mechanism (14) is started to drive the telescopic rod (23) to move, so that the push plate (24) moves the substandard products from the conveying area (11) on the conveying line (1) to the sorting area (12), that is, the automatic detection work of the SMT patch is completed.

2. The method for quickly detecting SMT patch quality according to claim 1, characterized in that, The conveying line (1) comprises two symmetrically distributed side plates (2), the outer wall of the bottom end of the side plate (2) is welded with a supporting leg (3), and the outer wall of the bottom end of the supporting leg (3) is welded with a pad, the outer wall of one side of the side plate (2) is fixed with a mounting seat (4) through bolts, and the mounting seat (4) is fixedly provided with a servo motor (5), the outer wall of one side of the side plate (2) is fixedly provided with a speed reducer (6) in transmission connection with the servo motor (5), both ends of the two side plates (2) are provided with roller shafts (8), and the outer transmission connection of the roller shafts (8) is provided with a conveying belt (9).

3. The method for quickly detecting SMT patch quality according to claim 2, characterized in that, The outer wall of both ends of the side plate (2) is welded with an end plate (7), and the end plate (7) is a semicircular structure.

4. The method for rapidly detecting SMT patch quality according to claim 2, characterized in that, The outer surface of the conveying belt (9) is provided with a region line (10), and the conveying belt (9) is divided into two sorting areas (12) and one conveying area (11) by the region line (10).

5. The method for quickly detecting SMT patch quality according to claim 1, characterized in that, The outer wall of both sides of the top of the conveying line (1) is fixedly installed with an infrared position sensor (13) through bolts, and the bottom of the infrared position sensor (13) is provided with a lifting adjusting device.

6. The method for quickly detecting SMT patch quality according to claim 1, characterized in that, The sorting mechanism (14) comprises a fixed seat (21) fixed on one side of the top of the conveying line (1), and the fixed seat (21) is fixed with a driving part (22) on one side through bolts, one end of the driving part (22) is provided with a telescopic rod (23), and the outer wall of one end of the telescopic rod (23) is welded with a push plate (24).

7. The method for quickly detecting SMT patch quality according to claim 6, characterized in that, The telescopic rod (23) is a bending type structure, and the gap between the push plate (24) and the conveying line (1) is 1-3cm.

8. The method for quickly detecting SMT patch quality according to claim 1, characterized in that, The front end of the controller (20) is electrically connected with the echo detector (17), the controller (20) is connected with a storage module (37), the rear end of the controller (20) is electrically connected with a comparison module (39), and the controller (20) is electrically connected with a display (19).

9. The method for quickly detecting SMT patch quality according to claim 8, characterized in that, The image processing module (36) is arranged between the controller (20) and the echo detector (17), and the storage module (37) has a reference picture (38) stored therein.

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