COB final inspection equipment

Abstract

The utility model relates to the technical field of camera chip detection, in particular to COB (Chip On Board) final inspection equipment, which comprises a stock bin assembly, a rack, a lower visual camera, a material taking manipulator and a test fixture, the stock bin assembly, the lower visual camera and the test fixture are sequentially arranged on the rack; a material tray for loading chips is arranged on the material bin assembly; and the material taking manipulator is used for sequentially conveying the chips in the material tray to a position right above the lower visual camera and to the test fixture. When the chip detection device is used, automatic feeding, position adjustment and automatic detection of chips can be completed in the structure, the chip detection efficiency is greatly improved, the labor intensity is reduced, and the risk that the chips are damaged by clamping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of camera chip detection, in particular to a COB final inspection device. Background Art

[0002] The COB process is a process of directly fixing the bare chip on the printed circuit board, then performing wire bonding, and then encapsulating and protecting the chip and wires with organic glue, thereby achieving electrical and mechanical connection between the chip and the circuit board electrodes. The COB process flow is: board wiping - solid crystal - drying - binding - pre-testing - sealing - curing - testing; in the COB process, a carrier is usually used as a material tray, and the carrier has a product-shaped hole, and the product is placed in the shaped hole of the material tray.

[0003] During the detection process, it is necessary to manually use tweezers to place the chips one by one into a test fixture with a test circuit and power it on. Then, the camera chip takes a picture of the fixture and transmits it to the computer for comparison to determine whether the chip is a good product. This chip detection method is labor-intensive and has low loading efficiency. In addition, the manual clamping of tweezers has unstable clamping force, which can easily damage the chip and reduce the yield rate. Utility Model Content

[0004] The utility model aims to provide a COB final inspection device in view of the defects and shortcomings of the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model discloses a COB final inspection device, which comprises a silo assembly, a frame, a lower visual camera, a material taking manipulator and a test fixture; the silo assembly, the lower visual camera and the test fixture are arranged on the frame in sequence; a tray for loading chips is provided on the silo assembly;

[0007] The material-retrieving robot is used to transport the chips in the tray in sequence to the top of the lower vision camera and the test fixture.

[0008] Furthermore, the material picking robot includes a hollow motor, a longitudinal linear module connected to a frame at one end, a transverse linear module connected to the other end of the longitudinal linear module at one end, and a translation slide fixed to the other end of the transverse linear module; a nozzle lifting slide is slidably connected to the translation slide; the shell of the hollow motor is fixed to the nozzle lifting slide; a suction nozzle is connected to one end of the hollow motor shaft of the hollow motor; an air pipe is connected to the other end of the hollow motor shaft of the hollow motor; and a first lifting linear module for driving the nozzle lifting slide to perform lifting motion is connected to the translation slide.

[0009] Furthermore, an upper visual camera is slidably connected to the translation slide; and a second lifting module for driving the upper visual camera to perform lifting motion is provided on the translation slide.

[0010] Furthermore, an annular light source coaxially arranged with the upper visual camera is arranged on the translation slide; strip light sources are fixed on both sides of the annular light source.

[0011] Furthermore, the silo assembly includes a pushing tray assembly that can push the tray to slide; a loading tray bin and a return tray bin are provided on the frame; the loading tray bin and the return tray bin are arranged in sequence along the sliding direction of the pushing tray assembly; the loading tray bin and the return tray bin are both provided with a lifting device for driving the tray to perform lifting and lowering movements; and a dividing tray assembly is provided at the top of the loading tray bin and the return tray bin.

[0012] Furthermore, the tray assembly is composed of two symmetrically arranged support and clamping modules; the support and clamping module is composed of a tray telescopic support member and a clamping member arranged in sequence from bottom to top along the height direction;

[0013] The material tray telescopic support comprises a support fixing seat fixed on the frame, a support guide shaft fixed on the support fixing seat and a material tray support plate slidably connected to the support guide shaft; a support spring is connected between the material tray support plate and the support fixing seat; a wedge-shaped surface is arranged between the outer surface and the bottom surface of the material tray support plate.

[0014] Furthermore, the push plate assembly includes a push fixing seat fixed on the frame, a through-screw motor fixed on the push fixing seat, and a push seat slidably connected to the push fixing seat; the screw of the through-screw motor is fixed on the push seat.

[0015] After adopting the above structure, the beneficial effect of the utility model is as follows: a COB final inspection device described in the utility model. When using the utility model, in the first step, the bin assembly fixes the material tray; in the second step, the material picking robot grabs the chip and then moves it to the position of the lower visual camera. The lower visual camera obtains the chip image and then transmits the image to the computer for comparison. If the swing angle of the chip is incorrect, the material picking robot adjusts the angle; in the third step, the chip with the angle adjusted is placed in the test fixture by the material picking robot; after the circuit of the test fixture is connected, the chip is used to shoot the set image; the image can be set inside the fixture, at a certain distance from the chip; in the fourth step, the images taken by the test fixture and the chip are transmitted to the computer for comparison and analysis to determine whether the chip is a good product; the material picking robot transfers the good chip to the good material box; and transfers the defective product to the defective material box; in this structure, the automatic loading, position adjustment and automatic detection of the chip can be completed, which greatly improves the chip detection efficiency, reduces the labor intensity, and reduces the risk of the chip being pinched. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural diagram of the material distribution mechanism;

[0018] Figure 3 It is a structural diagram of the push tray assembly;

[0019] Figure 4 It is a first-person perspective stereogram of the retractable support of the feed tray;

[0020] Figure 5 It is the front view of the telescopic support of the tray;

[0021] Figure 6 is a structural diagram of the clamping member;

[0022] Figure 7 It is a structural diagram of the state before the tray contacts the wedge surface during the rising process;

[0023] Figure 8 This is a structural diagram of the state in which the topmost tray completely passes through the tray support plate during the tray rising process;

[0024] Fig. 9 This is a structural diagram of the topmost tray being clamped and fixed by the clamps on both sides during the tray rising process;

[0025] Fig.10 This is a structural diagram of the state in which the top tray is separated from the other trays by the tray separation assembly;

[0026] Fig.11 It is the structural diagram of the feed tray;

[0027] Fig.12 It is the structural diagram of the reclaiming manipulator;

[0028] Description of reference numerals:

[0029] A, silo assembly; A1, push plate assembly; A101, push screw; A102, through screw motor;

[0030] A103, pusher seat; A104, pusher fixed seat; A2, material tray telescopic support;

[0031] A201, support fixing seat; A202, support guide shaft; A203, support spring;

[0032] A204, tray support plate; A2041, wedge-shaped surface; A2042, rounded surface; A3, clamping piece;

[0033] A301, material dividing cylinder; A302, material dividing fixed plate; A303, material dividing convex block; A4, material loading tray;

[0034] A5, return tray bin; A6, lifting device; B, tray; B1, tray positioning slot; C, frame;

[0035] D, lower vision camera; E, material picking robot; E1, longitudinal linear module; E2, transverse linear module;

[0036] E3, hollow motor; E4, translation slide; E5, nozzle lifting slide;

[0037] E6, the first lifting linear module; E7, the second lifting module; E8, the upper visual camera;

[0038] E9, bar light source; E10, ring light source; E11, nozzle; F, test fixture. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings.

[0040] like Figure 1-Figure 12 As shown, a COB final inspection device described in the utility model includes a silo component A, a rack C, a lower visual camera D, a material picking manipulator E and a test fixture F; the silo component A, the lower visual camera D and the test fixture F are arranged on the rack C in sequence; the silo component A is provided with a tray B for loading chips;

[0041] The material taking robot E is used to sequentially convey the chips in the tray B to the top of the lower visual camera D and the test fixture F;

[0042] The lower visual camera D is essentially the same as the prior art, so it is not described in detail; the lower visual camera D is composed of a camera unit and a light source for fill light; the camera unit can capture the image of the chip on the material picking robot E, and then transmit the image to the computer for comparison to determine whether the position of the chip on the material picking robot E is correct; the test fixture F is essentially the same as the prior art, so it is not described in detail; a circuit is set inside the test fixture F, and when the chip is clamped and fixed by the test fixture F, the circuit is connected.

[0043] In the first step, the silo component A fixes the material tray B;

[0044] In the second step, the retrieving robot E grabs the chip and moves it to the position of the lower visual camera D. The lower visual camera D acquires the chip image and then transmits the image to the computer for comparison. If the chip's swing angle is incorrect, the retrieving robot E adjusts the angle;

[0045] In the third step, the chip with the adjusted angle is placed into the test fixture F by the material taking robot E. After the circuit of the test fixture F is connected, the chip is used to shoot the set image. The image can be set inside or outside the fixture at a certain distance from the chip.

[0046] Step 4: The images taken by the test fixture F and the chip are transmitted to the computer for comparison and analysis to determine whether the chip is a good product; the material picking robot E transfers the good chip to the good material box; and transfers the defective chip to the defective material box;

[0047] In this structure, automatic chip loading, chip position adjustment and automatic detection can be completed, which greatly improves chip detection efficiency, reduces labor intensity, and reduces the risk of chip being clamped.

[0048] As a preferred embodiment of the utility model, the material-retrieving robot E includes a hollow motor E3, a longitudinal linear module E1 connected to a frame C at one end, a transverse linear module E2 connected to the other end of the longitudinal linear module E1 at one end, and a translation slide E4 fixed to the other end of the transverse linear module E2; a suction nozzle lifting slide E5 is slidably connected to the translation slide E4; the shell of the hollow motor E3 is fixed to the suction nozzle lifting slide E5; a suction nozzle E11 is connected to one end of the hollow motor shaft of the hollow motor E3; an air pipe is connected to the other end of the hollow motor shaft of the hollow motor E3; the translation slide E4 is connected to a first lifting linear module E6 for driving the suction nozzle lifting slide E5 to perform lifting motion;

[0049] The longitudinal linear module E1, the transverse linear module E2, and the first lifting linear module E6 are all linear modules, which are essentially the same as the prior art, so they are not described in detail; the hollow motor E3 is essentially the same as the prior art, so it is not described in detail. The hollow motor E3 can drive the hollow motor shaft according to the signal to realize the rotation of the suction nozzle E11; the air pipe connected to the gas pressure device is connected to the suction nozzle E11 through the shaft hole of the hollow motor shaft, and the suction force of the suction nozzle E11 is controlled by the gas pressure device to adsorb and fix the chip; the hollow motor shaft of the hollow motor E3 is cylindrical, and the two ends of the cylinder are respectively connected to the suction nozzle E11 and the air pipe;

[0050] The longitudinal linear module E1 drives the transverse linear module E2 to move longitudinally, and the transverse linear module E2 drives the translation slide E4 to move transversely; the first lifting linear module E6 drives the nozzle lifting slide E5, the hollow motor E3 and the nozzle E11 to move up and down;

[0051] The suction nozzle E11 is moved by the longitudinal linear module E1, the transverse linear module E2 and the first lifting linear module E6 to transfer the chip;

[0052] The hollow motor E3 is used to drive the suction nozzle E11 to rotate to adjust the angle of the chip.

[0053] As a preferred embodiment of the utility model, an upper visual camera E8 is slidably connected to the translation slide E4; a second lifting module E7 for driving the upper visual camera E8 to perform lifting motion is arranged on the translation slide E4; the second lifting module E7 is essentially the same as the prior art, so it is not described in detail, and the lower visual camera D is an image acquisition module. The lifting and lowering of the upper visual camera E8 is controlled by the second lifting module E7; the upper visual camera E8 is used to obtain the chip position information on the tray B, that is, to obtain the position information of the lower visual camera D and to obtain the position information of the test fixture F; the precise position information of the chip on the tray B captured by the upper visual camera E8 is used to accurately control the grabbing position of the suction nozzle E11; similarly, the position information of the test fixture F captured by the upper visual camera E8 is used to accurately control the discharge position of the suction nozzle E11.

[0054] As a preferred embodiment of the utility model, a ring light source E10 is arranged on the translation slide E4 and is coaxially arranged with the upper visual camera E8; strip light sources E9 are fixed on both sides of the ring light source E10; the strip light source E9 and the ring light source E10 are both used to provide fill light for the shooting of the upper visual camera E8.

[0055] As a preferred embodiment of the present invention, the silo assembly A includes a pushing tray assembly A1 that can push the tray B to slide; a loading tray bin A4 and a return tray bin A5 are provided on the frame C; the loading tray bin A4 and the return tray bin A5 are arranged in sequence along the sliding direction of the pushing tray assembly A1; the loading tray bin A4 and the return tray bin A5 are both provided with a lifting device A6 for driving the tray B to perform lifting and lowering movements; the tops of the loading tray bin A4 and the return tray bin A5 are both provided with a dividing tray assembly;

[0056] The loading tray bin A4 and the return tray bin A5 are cavity structures inside the frame C;

[0057] The stacked trays are placed in a drawer structure with a slide rail; a through slot for the lifting part of the lifting device A6 is provided on the drawer; the lifting device A6 is essentially the same as the existing lifting device, so it is not described in detail; the lifting device A6 on the upper tray bin A4 drives the tray to rise to the position directly opposite the tray assembly, and after the tray assembly fixes the upper tray bin A4 and the top tray B, the lifting device A6 drives the remaining trays B in the upper tray bin A4 to descend and separate from the tray B on the tray assembly; the tray pushing assembly A1 pushes the tray B on the tray assembly back to the tray assembly on the tray bin A5 for clamping and fixing. In this state, this position is the loading station; the loading robot takes out the chips from the tray B of the return tray bin A5 and puts them on the inspection fixture for inspection in sequence; the two inspected trays are placed on the external good product tray, and the defective ones are placed on the defective product tray; the empty tray B on the return tray bin A5 is raised by the lifting device A6 on the return tray bin A5 and then stacked with the empty tray B on the lifting device A6; finally, the tray separation assembly on the return tray bin A5 releases the empty tray B; the empty tray B is lowered along with the lifting device A6 on the return tray bin A5 and is placed at a position that does not hinder the next tray B from entering the return tray bin A5 from the loading tray bin A4;

[0058] The material dividing mechanism can separate the material trays, position them on the loading station and automatically unload the empty material trays from the loading station after multiple material trays B are put in at one time, thereby reducing the labor intensity of loading, improving the continuity of loading and improving the efficiency of loading.

[0059] As a preferred embodiment of the present invention, the tray assembly is composed of two symmetrically arranged support and clamping modules; the support and clamping module is composed of a tray telescopic support member A2 and a clamping member A3 arranged in sequence from bottom to top along the height direction;

[0060] The tray telescopic support A2 includes a support fixing seat A201 fixed on the frame C, a support guide shaft A202 fixed on the support fixing seat A201, and a tray support plate A204 slidably connected to the support guide shaft A202; a support spring A203 is connected between the tray support plate A204 and the support fixing seat A201; a wedge surface A2041 is provided between the outer surface and the bottom surface of the tray support plate A204;

[0061] When the tray B of the upper tray bin A4 is raised by the lifting device A6, the top tray B first contacts the wedge surface A2041 and pushes the wedge surface A2041, so that the two tray support plates A204 overcome the elastic force of the spring and slide outward; when the top tray B is pressed against the side surface of the tray support plate A204, the compression amount of the tray support plate A204 is the maximum; after the top tray B completely passes through the tray support plate A204, it passes through the clamping piece A3 The tray B above the tray support plate A204 is clamped and fixed. In this state, the second tray B from top to bottom is pressed by the two tray support plates A204, and the remaining trays B of the upper tray bin A4 are lowered through the lifting device A6. When the tray B on the lifting device A6 is lowered to the position misaligned with the tray support plate A204, the support spring A203 resets the tray support plate A204, the clamp A3 releases the tray B, and the tray support plate A204 supports the tray B to complete the tray separation;

[0062] The stacking process on the return tray bin A5 is as follows: the clamping members A3 on both sides clamp and fix the tray B, the lifting device A6 of the return tray bin A5 rises and pushes the tray support plate A204 outward through the wedge surface A2041, and the top tray B or the lifting platform of the lifting device A6 is stacked with the tray B on the clamping member A3; after the clamping member A3 releases the tray B, the lifting device A6 drives the top stacked tray B to descend; similarly, during the descent of the tray B, the tray support plate A204 is also propped open by the tray B, until the tray B is completely misaligned with the tray support plate A204, and then the tray support plate A204 is completely reset;

[0063] The gap between the tray support plate A204 of the return tray bin A5 and the tray support plate A204 of the upper tray bin A4 is very small, so when the tray B is pushed by the push tray assembly A1, it can slide and transfer through the slideway formed by the tray support plate A204; a rounded surface A2042 is provided between the wedge surface A2041 and the tray support plate A204; since the gap between the trays B is very small, and the tray B is in contact with the rounded surface A2042; therefore, the tray support plate A204 cannot be inserted between the trays B; the clamping member A3 includes a material dividing cylinder A fixed on the frame C. 301, a material distribution fixing plate A302 fixed on the piston rod end of the material distribution cylinder A301 and a material distribution protrusion A303 fixed on the material distribution fixing plate A302; the left and right sides of the material tray B are provided with a material tray positioning groove B1 used in conjunction with the material distribution protrusion A303; the material distribution cylinder A301 can drive the material distribution protrusion A303 on the material distribution fixing plate A302 to perform telescopic movement; when the material distribution protrusion A303 is inserted into the material tray positioning groove B1, the material tray B is fixed on the frame C through the material distribution protrusions A303 on both sides, and the material tray B will not perform lifting and lowering movement with the lifting device A6. When the manipulator takes the material, the positioning of the material distribution protrusion A303 can fix the position of the material tray B; the number of the material distribution protrusion A303 can be multiple.

[0064] As a preferred embodiment of the utility model, the pushing plate assembly A1 includes a pushing plate fixing seat A104 fixed on the frame C, a through-screw motor A102 fixed on the pushing plate fixing seat A104, and a pushing plate A103 slidably connected to the pushing plate fixing seat A104; the screw A101 of the through-screw motor A102 is fixed on the pushing plate fixing seat A103; the through-screw motor A102 has no essential difference from the prior art, so it is not described in detail; the through-screw motor A102 can drive the screw A101 to perform telescopic movement relative to the body of the through-screw motor A102, thereby driving the pushing plate A103 to move, and pushing the material plate B through the pushing plate A103, so that the material plate B slides from the loading plate bin A4 to the return plate bin A5.

[0065] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A COB final inspection equipment, characterized by: The device comprises a silo component (A), a frame (C), a lower visual camera (D), a material-retrieving manipulator (E) and a test fixture (F); the silo component (A), the lower visual camera (D) and the test fixture (F) are arranged on the frame (C) in sequence; a material tray (B) for loading chips is arranged on the silo component (A); The material-retrieving robot (E) is used to sequentially transport the chips in the material tray (B) to the top of the lower vision camera (D) and to the test fixture (F).

2. A COB final inspection device according to claim 1, characterized in that: The material-retrieving robot (E) comprises a hollow motor (E3), a longitudinal linear module (E1) connected to a frame (C) at one end, a transverse linear module (E2) connected to the other end of the longitudinal linear module (E1) at one end, and a translation slide (E4) fixed to the other end of the transverse linear module (E2); a suction nozzle lifting slide (E5) is slidably connected to the translation slide (E4); the housing of the hollow motor (E3) is fixed to the suction nozzle lifting slide (E5); a suction nozzle (E11) is connected to one end of the hollow motor shaft of the hollow motor (E3); an air pipe is connected to the other end of the hollow motor shaft of the hollow motor (E3); and a first lifting linear module (E6) for driving the suction nozzle lifting slide (E5) to perform lifting motion is connected to the translation slide (E4).

3. A COB final inspection device according to claim 2, characterized in that: An upper visual camera (E8) is slidably connected to the translation slide (E4); a second lifting module (E7) for driving the upper visual camera (E8) to perform lifting movement is arranged on the translation slide (E4).

4. A COB final inspection device according to claim 3, characterized in that: An annular light source (E10) coaxially arranged with the upper visual camera (E8) is arranged on the translation slide (E4); strip light sources (E9) are fixed on both sides of the annular light source (E10).

5. The COB final inspection equipment according to claim 1, characterized in that: The material bin assembly (A) comprises a material pushing disk assembly (A1) capable of pushing the material tray (B) to slide; a material loading disk bin (A4) and a material return disk bin (A5) are arranged on the frame (C); the material loading disk bin (A4) and the material return disk bin (A5) are arranged in sequence along the sliding direction of the material pushing disk assembly (A1); the material loading disk bin (A4) and the material return disk bin (A5) are both provided with a lifting device (A6) for driving the material tray (B) to perform lifting and lowering movements; and a tray separation assembly is provided at the top of each of the material loading disk bin (A4) and the material return disk bin (A5).

6. A COB final inspection device according to claim 5, characterized in that: The tray assembly comprises two symmetrically arranged support and clamping modules; the support and clamping modules comprise a tray telescopic support member (A2) and a clamping member (A3) arranged in sequence from bottom to top along the height direction; The material tray telescopic support member (A2) comprises a support fixing seat (A201) fixed on a frame (C), a support guide shaft (A202) fixed on the support fixing seat (A201), and a material tray support plate (A204) slidably connected to the support guide shaft (A202); a support spring (A203) is connected between the material tray support plate (A204) and the support fixing seat (A201); and a wedge-shaped surface (A2041) is provided between the outer surface and the bottom surface of the material tray support plate (A204).

7. The COB final inspection equipment according to claim 5, characterized in that: The push plate assembly (A1) comprises a push fixing seat (A104) fixed on a frame (C), a screw motor (A102) fixed on the push fixing seat (A104), and a push seat (A103) slidably connected to the push fixing seat (A104); the screw (A101) of the screw motor (A102) is fixed on the push seat (A103).

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