CN115739690A

CN115739690A - LED patch detection device and detection method

Info

Publication number: CN115739690A
Application number: CN202211482756.5A
Authority: CN
Inventors: 吴枝任
Original assignee: Shenzhen Anzetong Technology Development Co ltd
Current assignee: Shenzhen Anzetong Technology Development Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-03-07
Anticipated expiration: 2042-11-24
Also published as: CN115739690B

Abstract

The invention discloses LED patch detection equipment and a detection method, the detection equipment comprises a rack, a seat stand and a detection unit, the detection unit comprises a material loading mechanism, a feeding group, a discharging group, a CCD detection group and an unqualified transfer group, the CCD detection group is provided with a CCD image sensing module and a pressure sensor module, the CCD image sensing module is provided with an orthographic projection image capturing module and a side projection image capturing module, images are respectively captured by the orthographic projection image capturing module and the side projection image capturing module and are transmitted to a processing center, the captured images are analyzed by the processing center and qualified products and unqualified products are judged, the unqualified products give coordinate values, and the unqualified products on a test disc are taken out by an unqualified product taking manipulator. The LED patch detection equipment is full-automatic detection equipment, is automatically fed and detected, can separate qualified products from unqualified products after detection, and improves the detection efficiency.

Description

LED patch detection device and detection method

Technical Field

The invention relates to LED patch detection equipment, in particular to LED patch detection equipment and a detection method.

Background

In the field of LED chip manufacturing, it is necessary to perform batch production detection on manufactured LED chips, and detect electrical performance, functional parameters, appearance, and the like of the LED chips.

For the LED patch, besides the above-mentioned properties, the light-emitting property of the LED patch needs to be detected to confirm that the LED patch can emit light normally, thereby ensuring the quality of leaving factory.

The following are the defects of the existing LED patch detection technology:

1. in the conventional art, generally, carry out luminous performance to the LED paster through the manual work and detect, operating personnel utilizes the naked eye to observe, confirms that the LED paster can normally produce light, however, produces fatigue easily when the naked eye observes LED light, and looks at LED light directly for a long time and can cause the harm to eyesight, is unfavorable for the high-efficient detection of LED paster and ensures operating personnel's health.

2. When the appearance of the LED patch is detected, the height and the circumference of the LED patch need to be detected, if the height of the LED patch is different from the set height, the light emitting effect of the LED patch is influenced, if the circumference of the LED patch is different from the set value, the light emitting range of the LED patch is influenced, and the height and the circumference of the LED patch are determined to be difficult to distinguish by naked eyes.

Therefore, it is necessary to develop an LED patch testing device to solve the above technical problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the LED patch detection device and the detection method, and aims to improve the detection efficiency and solve the problems that the height detection of the LED patch and the perimeter detection of the LED patch cannot be completed by manual detection.

In order to solve the technical problem, the invention is realized by the following scheme: the invention relates to LED patch detection equipment, which comprises a rack, a seat stand arranged on the rack and a detection unit arranged on the seat stand, wherein the detection unit comprises:

the material loading mechanism is provided with a first Y-axis moving module and a detection platform set which is in driving connection with the first Y-axis moving module and is driven by the first Y-axis moving module to do Y-axis movement, the detection platform set is provided with a lifting mechanism and a test platform in driving connection with the lifting mechanism, and the test platform is provided with an array circuit module for supplying power to and detecting each LED patch;

the feeding set is provided with a feeding mechanism and a first X-axis moving module which drives the feeding mechanism to reciprocate between the feeding platform and the testing platform, the first X-axis moving module is provided with a first vacuum negative pressure system, and the first vacuum negative pressure system forms negative pressure through vacuumizing to adsorb and send a testing disc on the feeding platform to the testing platform;

the discharging group is provided with a discharging mechanism and a second X-axis moving module which drives the discharging mechanism to reciprocate between the testing platform and the discharging platform, the second X-axis moving module is provided with a second vacuum negative pressure system, the second vacuum negative pressure system forms negative pressure through vacuumizing to adsorb a testing disc on the testing platform and send the testing disc to the discharging platform, and the discharging group is also provided with a defective product taking manipulator;

the CCD detection group is provided with a portal frame arranged on the seat stand, a third X-axis moving module arranged on the portal frame, a CCD image sensing module in driving connection with the third X-axis moving module and a pressure sensor module, the range of a shot image of the CCD image sensing module covers the test platform, the CCD image sensing module is provided with two groups of CCD image sensors and two groups of light sources, one group of CCD image sensors and one group of light sources form a front projection image-taking module, the other group of CCD image sensors and the other group of light sources form a side projection image-taking module, the front projection image-taking module and the side projection module respectively take images and transmit the images to a processing center, the processing center analyzes and judges the shot images to obtain qualified products and unqualified products, the unqualified products give coordinate values, the unqualified products on the test disk are taken out by the unqualified product taking manipulator, and the pressure sensor module can apply pressure to the test disk on the test platform;

and the unqualified transfer group is arranged on the seat stand and is provided with a second Y-axis moving module and an unqualified product receiving tray which is driven by the second Y-axis moving module to move in the Y-axis direction, and the second Y-axis moving module can drive the unqualified product receiving tray to be positioned below the unqualified product taking manipulator to receive materials.

Further, in the material loading mechanism, the first Y-axis moving module includes:

the first Y-axis motor is fixed on the seat stand through a first motor base, and two parallel first Y-axis guide rail seats are further arranged on the seat stand;

the two first Y-axis guide rails are respectively arranged on the two first Y-axis guide rail seats;

the first screw rod is positioned between the two first Y-axis guide rail seats and is in driving connection with the first Y-axis motor, and the outer end of the first screw rod is fixed on the seat platform through a first screw rod seat;

the first sliding seat is connected to the two first Y-axis guide rail seats in a sliding mode and is in threaded connection with the first lead screw, and the first sliding seat is driven to move in the Y-axis direction by the rotation of the first lead screw.

Furthermore, elevating system's power supply is first voice coil motor, and this first voice coil motor passes through the voice coil motor seat to be fixed in on the first slide, its drive end connecting platform seat.

Further, divide into matrix groove face on test platform's the mesa, all be equipped with elasticity on each groove face and detect the syringe needle, the bottom surface of test panel have with elasticity detects the syringe needle and corresponds complex contact terminal.

Furthermore, the first X-axis moving module drives the feeding mechanism to move in the X-axis direction through a first belt set.

Furthermore, the second X-axis moving module drives the discharging mechanism to move in the X-axis direction through a second belt set.

Further, the feeding mechanism comprises:

the first support seat is fixed on the first X-axis moving module through a first vertical support;

the first Z-axis motor is arranged on one side of the first supporting seat in a Z-axis direction and is in driving connection with a first Z-axis sliding plate, and the first Z-axis motor drives the first Z-axis sliding plate to lift;

the second voice coil motor base is arranged on the first Z-axis sliding plate;

the second voice coil motor is arranged on the second voice coil motor seat;

the material taking connecting seat is in driving connection with the second voice coil motor and is driven by the second voice coil motor to do lifting motion, and the lower end of the material taking connecting seat is connected with a first vacuum adsorption plate;

the first pressure sensor module is arranged on the material taking connecting seat and senses the pressure applied to the material taking connecting seat.

Further, the discharge mechanism comprises:

the second supporting seat is fixed on the second X-axis moving module through a second vertical support;

the second Z-axis motor is arranged on one side of the second supporting seat in the Z-axis direction and is in driving connection with a second Z-axis sliding plate, and the second Z-axis motor drives the second Z-axis sliding plate to lift;

a third voice coil motor seat arranged on the second Z-axis sliding plate;

a third voice coil motor installed on the third voice coil motor base;

the discharging connecting base is in driving connection with the third voice coil motor and is driven by the third voice coil motor to do lifting motion, the lower end of the discharging connecting base is connected with a second vacuum adsorption plate, and the second vacuum adsorption plate is provided with a avoidance hole for the unqualified product taking manipulator to pass through;

and the second pressure sensor module is arranged on the discharging connecting seat and senses the pressure applied to the discharging connecting seat.

Further, the reject picking manipulator includes:

the fixing plate is horizontally arranged on the second supporting seat and is provided with a through hole;

the material taking motor is arranged on the fixing plate and is in driving connection with a gear;

the supporting roller is fixed on the plate surface of the fixing plate through a support, the rolling surface of the supporting roller is opposite to the wheel surface of the gear, and a gap is reserved between the supporting roller and the gear;

the rack is arranged in the gap in a penetrating manner, the insection side of the rack is meshed with the gear, and the opposite side of the insection of the rack is abutted against the rolling surface of the supporting roller;

the negative pressure device is installed at the lower end of the rack and connected with a downward suction nozzle, and the lifting path of the suction nozzle can pass through the avoidance hole.

Furthermore, the third X-axis moving module comprises an X-axis template arranged on one side of the portal frame beam, double X-axis guide rails arranged on the X-axis template, an X-axis stepping motor arranged on the X-axis template, a second lead screw in driving connection with the X-axis stepping motor, and an X-axis moving sliding plate in sliding connection with the double X-axis guide rails and in threaded connection with the second lead screw.

Furthermore, the front projection image capturing module comprises:

the first CCD image sensor is installed on the upper side of the position of the vertical central line of the X-axis movable sliding plate through a height adjustable seat;

the first light source is arranged on the lower side of the vertical center line of the X-axis movable sliding plate and is provided with a through hole for the first CCD image sensor to avoid the first CCD image sensor lens;

the side projection image capturing module comprises:

the second CCD image sensor is installed on the right side of the position of the vertical central line of the X-axis movable sliding plate through a second height adjusting seat and is lower than the first CCD image sensor;

and the second light source is arranged on the left side of the vertical center line position of the X-axis movable sliding plate.

Furthermore, the pressure sensor module is installed on a cover body, the box body covers the X-axis movable sliding plate and covers the orthographic projection image capturing module and the side projection image capturing module, the lower end of the cover body is open, and the pressure sensor module comprises:

the linear cylinder seat is arranged on the front side surface of the cover body;

the linear cylinder is arranged on the linear cylinder seat;

the L-shaped bracket is in driving connection with the linear cylinder;

the pressure sensor is arranged on the L-shaped bracket, and the sensing head of the pressure sensor faces downwards;

and the guide post is arranged on the L-shaped bracket and penetrates through the linear cylinder seat.

Furthermore, in the unqualified transfer group, the second Y-axis moving module comprises a ' 20866mounted type bracket, a double-row Y-axis guide rail mounted on the ' 20866, a second Y-axis motor mounted on the ' 20866type bracket, a second belt group in driving connection with the second Y-axis motor, and a second slide seat in sliding connection with the double-row Y-axis guide rail, wherein the second slide seat is also fixed with an uplink belt of the second belt group;

the lower disc surface of the unqualified product take-up disc is fixed with the second sliding seat and is also supported by the two groups of roller wheel brackets;

the roller bracket comprises a supporting plate and a roller, wherein the supporting plate is laterally arranged on the 20866of the bracket, the roller is rotatably arranged on the supporting plate, and the lower disc surface of the unqualified product take-up pan is arranged on the two rollers.

A detection method of LED patch detection equipment comprises the following detection steps:

firstly, a test disc filled with LED patches is sent to a feeding platform by an external automatic feeding vehicle, the feeding platform is provided with a positioning structure to accurately position the test disc, and a first X-axis moving module drives a feeding mechanism to reach the upper part of the test disc;

step two, a first Z-axis motor on the feeding mechanism drives a second voice coil motor to reach a preset height, the second voice coil motor drives a first vacuum adsorption plate to descend, an adsorption head on the first voice coil motor is made to be tightly attached to the edge of the test disc, the first pressure sensor module senses pressure, when the pressure reaches the preset value, the second voice coil motor stops working, and a first vacuum negative pressure system is started, so that the first vacuum adsorption plate tightly adsorbs the test disc;

step three, a second voice coil motor drives a first vacuum adsorption plate to ascend, a first X-axis moving module drives a feeding mechanism to reach the position above a detection platform, a first Z-axis motor drives a second voice coil motor to descend and reach a preset height, the second voice coil motor drives the first vacuum adsorption plate to descend so that a test disc is placed on the detection platform, meanwhile, a first pressure sensor module senses pressure, when the pressure reaches the preset value, the second voice coil motor stops working, and the first vacuum adsorption plate keeps the pressure;

step four, in the step three, the second voice coil motor drives the first vacuum adsorption plate to descend, and simultaneously, the linear air cylinder driving pressure sensor supports against the first vacuum adsorption plate and applies pressure;

step five, electrifying the array circuit module on the detection platform to enable each LED patch to conduct a circuit, reading the coordinates of the LED patches which are not bright by the processing center when one or more LED patches are not bright, recording all the coordinates to form defective product coordinate signals, transmitting the defective product coordinate signals to the defective product taking manipulator, and receiving all the defective product coordinate signals by the defective product taking manipulator and waiting;

step six, after the power-on detection of the LED patches is finished, the array circuit module is powered off, the pressure sensor is driven to ascend by the linear cylinder, the second voice coil motor drives the first vacuum adsorption plate to ascend, the first Z-axis motor drives the second voice coil motor to ascend to a preset height, and the first X-axis moving module resets the feeding mechanism;

step seven, exposing an LED patch array on the test disc, starting a CCD detection group at the moment, firstly, electrifying an orthographic projection image capturing module to work, and through the cooperation of a first Y-axis moving module and a third X-axis moving module, enabling the orthographic projection image capturing module to capture all images of the test disc and transmit the images to a processing center, judging whether the LED patches are in the right position or not by comparing orthographic projection images of the LED patches with preset orthographic projection images by the processing center, when one or more LED patches in the orthographic projection images and the preset orthographic projection images exceed an error value, judging that the LED patches corresponding to the error value are unqualified products by the processing center, generating unqualified product LED coordinates and sending the unqualified product LED coordinates to an unqualified product taking manipulator, and the unqualified product taking manipulator receives all unqualified product coordinate signals and continues to wait;

step eight, the orthographic projection image capturing module is powered off after image capturing is finished, the side projection image capturing module is started and is consistent with the process of the step seven, the side projection image capturing module laterally projects the LED patch through a second light source, so that a shadow area of the LED patch and an image of the LED patch are shot by a second CCD image sensor together, the second CCD image sensor transmits the image of the LED patch and the image of the shadow area to a processing center, the processing center judges whether the height of the LED patch meets the requirement or not by judging the projection length of the shadow area, the unqualified LED patch is judged by the processing center, the unqualified LED patch coordinate is recorded, and the unqualified LED patch coordinate is sent to an unqualified product taking manipulator;

step eight, the side projection image capturing module finishes image capturing and is powered off, the second X-axis moving module drives the discharging mechanism to reach the position above the detection platform, the unqualified product material taking manipulator accurately finds the coordinate positions of all unqualified LED patches through the second X-axis moving module and the first Y-axis moving module and captures the LED patches one by one, and the second X-axis moving module drives the discharging mechanism to move the unqualified LED patches one by one above the discharging platform;

step nine, the unqualified transfer group synchronously receives a coordinate quantity signal of an unqualified LED patch, the second Y-axis moving module drives the unqualified LED patch receiving tray to reach the position below an unqualified product taking manipulator, the unqualified product taking manipulator cancels negative pressure to enable the unqualified LED patch to fall into the unqualified product patch receiving tray, and the unqualified transfer group resets after all unqualified LED patches are transferred to the unqualified product patch receiving tray;

step ten, the second X-axis moving module drives the discharging mechanism to the detection platform, the discharging mechanism enables the second vacuum adsorption plate to take out the test disc with the qualified LED patches, then the second X-axis moving module drives the discharging mechanism to the discharging platform, the discharging mechanism cancels negative pressure, and the test disc with the qualified LED patches is placed on the discharging platform;

and step eleven, taking down the test disc placed on the discharging platform by the external automatic discharging vehicle for storage.

Compared with the prior art, the invention has the beneficial effects that:

1. the LED patch detection equipment is full-automatic detection equipment, is automatically fed and detected, can separate qualified products from unqualified products after detection, and improves the detection efficiency.

2. According to the invention, each LED patch is positioned in a coordinate mode, the array circuit module is arranged on the test platform (24) for power supply detection of each LED patch, the coordinate of the LED patch which is not bright is judged by the processing center, the coordinate forms a defective product coordinate, the defective product coordinate is sent to a defective product taking manipulator for taking materials, and the defective LED patch is accurately taken out.

3. The invention adopts two groups of CCD image capturing modules which are respectively an orthographic projection image capturing module and a side projection image capturing module, the orthographic projection image capturing module is used for shooting the front side of an LED patch, the formed pattern is compared with a set pattern, the unqualified LED patch is judged to be unqualified when the error of the perimeter size is larger, unqualified coordinates are formed, the unqualified coordinates are sent to an unqualified product material taking mechanical arm to take materials, the unqualified LED patch is accurately taken out, the length of a shadow area of the LED patch is judged through the side projection image capturing module, if the shadow area is larger than the size of the shadow area of a preset image, the thickness of the LED patch is large, if the shadow area is shorter than the size of the shadow area of the preset image, the LED patch is thin, therefore, the unqualified LED patch is judged by a processing center, unqualified coordinates are given, the unqualified coordinates are sent to the unqualified product material taking mechanical arm to take materials, and the unqualified LED patch is accurately taken out.

4. The discharging group of the invention adopts a mode of avoiding the opening to install two groups of mechanisms, so that the unqualified product taking manipulator does not occupy space.

Drawings

Fig. 1 is a perspective view of an LED patch detection device of the present invention.

Fig. 2 is a perspective view of the LED chip inspection apparatus with the body cover removed.

FIG. 3 is another perspective view of the LED patch testing device with the housing removed.

Fig. 4 is a structural view of the loading mechanism of the present invention.

Fig. 5 is a structural view of the feed mechanism of the present invention.

Fig. 6 is a structural view of the discharging mechanism of the present invention.

Fig. 7 is a block diagram of the reject take-out robot of the present invention.

Fig. 8 is a structural view of a test tray according to the present invention.

FIG. 9 is a schematic diagram of a CCD detection group according to the present invention.

Fig. 10 is a structural diagram of the CCD image sensor module according to the present invention.

Fig. 11 is a structural view of a defective transfer group according to the present invention.

Fig. 12 is a structural view of another loading mechanism of the present invention.

In the drawings, the reference numbers: the device comprises a frame 1, a detection unit 2, a machine body outer cover 3, an alarm lamp 4, an exhaust fan 5, an industrial personal computer 6, a silencing device 7, a seat stand 8, a test disc 9, a first Y-axis moving module 21, a CCD detection group 22, a feeding mechanism 23, a test platform 24, a discharging mechanism 25, a discharging platform 26, a unqualified product receiving disc 27, a second Y-axis moving module 28, a second X-axis moving module 29, a first X-axis moving module 210, a feeding platform 211, a first vacuum adsorption plate 212, a second vacuum adsorption plate 213, a first Y-axis guide rail seat 2101, a first Y-axis guide rail 2102, a lifting mechanism 2103, a first Y-axis motor 2104, a first lead screw 2105, a first supporting seat 231, a first Z-axis motor 232, a first Z-axis sliding plate 233, a second voice coil motor seat 234, a second voice coil motor seat 235, a material taking seat 236, a first pressure sensor 237 and a second supporting seat 251, a second Z-axis motor 252, a second Z-axis sliding plate 253, a third voice coil motor 254, a third voice coil motor base 255, a discharge connection base 256, a second pressure sensor module 257, a rack 258, a gear 259, a material taking motor 2510, a supporting roller 2511, a negative pressure device 2512, a suction nozzle 2513, a fixing plate 2514, a pressure sensor 222, a double-row X-axis guide rail 225, an X-axis stepping motor 226, a portal frame 227, a second screw 228, a cover 229, an X-axis moving sliding plate 2210, a first CCD image sensor 2211, a second CCD image sensor 2212, a first light source 2213, a second light source 2214, a height adjustable base 2215, a roller 271, a supporting plate 272, a second Y-axis motor 281, a "type bracket 282, a double-row Y-axis guide rail 283, a second belt group 284, a second sliding base 285, a second material loading mechanism 10, a platform bracket 101, an adsorption platform 102 and a positioning head 103.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and thus the protection scope of the present invention is more clearly and clearly defined. It should be apparent that the described embodiments of the present invention are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1: the concrete structure of the invention is as follows:

referring to fig. 1-11, the LED chip detection apparatus of the present invention includes a frame 1, a seat 8 disposed on the frame 1, and a detection unit 2 mounted on the seat 8, where the detection unit 2 includes:

the material loading mechanism is provided with a first Y-axis moving module 21 and a detection platform set which is in driving connection with the first Y-axis moving module 21 and is driven by the first Y-axis moving module 21 to do Y-axis movement, the detection platform set is provided with a lifting mechanism 2103 and a test platform 24 in driving connection with the lifting mechanism 2103, and the test platform 24 is provided with an array circuit module for supplying power to and detecting each LED patch;

the feeding set is provided with a feeding mechanism 23 and a first X-axis moving module 210 for driving the feeding mechanism 23 to reciprocate between a feeding platform 211 and a testing platform 24, the first X-axis moving module 210 is provided with a first vacuum negative pressure system, and the first vacuum negative pressure system forms negative pressure through vacuumizing to adsorb the testing disk 9 on the feeding platform 211 and send the testing disk to the testing platform 24;

the discharging group is provided with a discharging mechanism 25 and a second X-axis moving module 29 for driving the discharging mechanism 25 to reciprocate between the test platform 24 and the discharging platform 26, the second X-axis moving module 29 is provided with a second vacuum negative pressure system, the second vacuum negative pressure system forms negative pressure through vacuumizing to adsorb the test disc 9 on the test platform 24 and send the test disc to the discharging platform 26, and the discharging group is also provided with a defective product taking manipulator;

the CCD detection group 22 is provided with a portal frame 227 arranged on the seat stand 8, a third X-axis moving module arranged on the portal frame 227, a CCD image sensing module in driving connection with the third X-axis moving module and a pressure sensor module, the range of the shot image of the CCD image sensing module covers the test platform 24, the CCD image sensing module is provided with two groups of CCD image sensors and two groups of light sources, one group of CCD image sensors and one group of light sources form a front projection image capturing module, the other group of CCD image sensors and the other group of light sources form a side projection image capturing module, the images are respectively shot by the front projection module and the side projection image capturing module and transmitted to a processing center, the shot images are analyzed and judged to be qualified products and unqualified products by the processing center, the unqualified products give coordinate values, the unqualified products on the test disk 9 are taken out by the unqualified product taking manipulator, and the pressure sensor module can apply pressure to the test disk 9 on the test platform 24;

and the unqualified transferring group is arranged on the seat stand 8 and is provided with a second Y-axis moving module 28 and an unqualified product receiving tray 27 which is driven by the second Y-axis moving module 28 to move in the Y-axis direction, and the second Y-axis moving module 28 can drive the unqualified product receiving tray 27 to be received below the unqualified product material taking manipulator.

A preferred technical solution of this embodiment: as shown in fig. 4, in the loading mechanism, the first Y-axis moving module 21 includes:

the first Y-axis motor 2104 is fixed on the base 8 through a first motor base, and the base 8 is further provided with two parallel first Y-axis guide rail bases 2101;

two first Y-axis guide rails 2102 which are respectively installed on the two first Y-axis guide rail holders 2101;

a first screw 2105, which is located between the two first Y-axis guide rail seats 2101 and is in driving connection with the first Y-axis motor 2104, and the outer end of the first screw 2105 is fixed on the seat stand 8 through a first screw seat;

the first sliding base is connected to the two first Y-axis guide rail bases 2101 in a sliding manner and is in threaded connection with the first lead screw 2105, and the first lead screw 2105 rotates to drive the first sliding base to move in the Y-axis direction.

A preferred technical solution of this embodiment: elevating system 2103's power supply is first voice coil motor, and this first voice coil motor is fixed in through the voice coil motor seat on the first slide, its drive end connection platform seat.

A preferred technical solution of this embodiment: divide into matrix groove face on test platform 24's the mesa, all be equipped with elasticity on each groove face and detect the syringe needle, the bottom surface of test tray 9 have with elasticity detects the syringe needle and corresponds complex contact terminal.

A preferred technical solution of this embodiment: the first X-axis moving module 210 drives the feeding mechanism 23 to move in the X-axis direction through the first belt set.

A preferred technical solution of this embodiment: the second X-axis moving module 29 drives the discharging mechanism 25 to move in the X-axis direction through the second belt set.

A preferred technical solution of this embodiment: as shown in fig. 5, the feeding mechanism 23 includes:

a first supporting seat 231 fixed to the first X-axis moving module 210 by a first vertical bracket;

a first Z-axis motor 232, which is installed on one side of the first supporting seat 231 in the Z-axis direction and is connected to the first Z-axis sliding plate 233 in a driving manner, wherein the first Z-axis motor 232 drives the first Z-axis sliding plate 233 to lift;

a second voice coil motor mount 235 mounted on the first Z-axis slide plate 233;

a second voice coil motor 234 mounted on the second voice coil motor mount 235;

a material taking connecting seat 236 which is in driving connection with the second voice coil motor 234 and is driven by the second voice coil motor 234 to do lifting motion, wherein the lower end of the material taking connecting seat 236 is connected with a first vacuum adsorption plate 212;

the first pressure sensor module 237 is installed on the material taking connection seat 236 and senses the pressure applied to the material taking connection seat 236.

A preferred technical solution of this embodiment: as shown in fig. 6, the discharging mechanism 25 includes:

a second supporting seat 251 fixed to the second X-axis moving module 29 by a second vertical bracket;

a second Z-axis motor 252, which is installed at one side of the second support seat 251 in the Z-axis direction and is connected to a second Z-axis sliding plate 253 in a driving manner, and the second Z-axis motor 252 drives the second Z-axis sliding plate 253 to move up and down;

a third voice coil motor mount 255 mounted on the second Z-axis sliding plate 253;

a third voice coil motor 254 mounted on the third voice coil motor mount 255;

the discharge connecting seat 256 is in driving connection with the third voice coil motor 254 and is driven by the third voice coil motor 254 to perform lifting motion, the lower end of the discharge connecting seat 256 is connected with a second vacuum adsorption plate 213, and the second vacuum adsorption plate 213 is provided with a avoiding hole for the unqualified product taking manipulator to pass through;

and the second pressure sensor module 257 is installed on the discharge connecting seat 256 and senses the pressure applied to the discharge connecting seat 256.

A preferred technical solution of this embodiment: as shown in fig. 7, the reject picking manipulator includes:

a fixing plate 2514 horizontally installed on the second supporting seat 251, wherein a through hole is formed in the fixing plate 2514;

a material taking motor 2510 arranged on the fixing plate, wherein the material taking motor 2510 is in driving connection with a gear 259;

a supporting roller 2511 fixed to the plate surface of the fixing plate 2514 via a holder, wherein a rolling surface of the supporting roller 2511 faces the wheel surface of the gear 259, and a gap is left between the supporting roller 2511 and the gear 259;

the rack 258 is arranged in the gap in a penetrating way, the side of the insection of the rack is meshed with the gear 259, and the opposite side of the insection of the rack is abutted against the rolling surface of the supporting roller 2511;

and a negative pressure device 2512 installed at the lower end of the rack 258, wherein the negative pressure device 2512 is connected with a downward suction nozzle 2513, and the lifting path of the suction nozzle 2513 can pass through the avoidance hole.

A preferred technical solution of this embodiment: as shown in fig. 9-10, the third X-axis moving module includes an X-axis template installed on one side of the gantry 227 beam, a double-row X-axis guide rail 225 installed on the X-axis template, an X-axis stepping motor 226 installed on the X-axis template, a second lead screw 228 in driving connection with the X-axis stepping motor 226, and an X-axis moving slide 2210 slidably connected to the double-row X-axis guide rail 225 and screwed with the second lead screw 228.

A preferred technical solution of this embodiment: the orthographic projection image capturing module comprises:

a first CCD image sensor 2211 with a lens installed downward, the first CCD image sensor 2211 being installed on the upper side of the vertical center line position of the X-axis moving slide 2210 by a height adjustable base 2215;

a first light source 2213 installed at a lower side of a vertical center line of the X-axis moving slide 2210, the first light source 2213 having a through hole for the first CCD image sensor 2211 to escape from a lens of the first CCD image sensor 2211;

the side projection image capturing module comprises:

a second CCD image sensor 2212 with a lens installed downward, the second CCD image sensor 2212 being installed at a position right of the vertical center line position of the X-axis moving slide 2210 and lower than the first CCD image sensor 2211 through a second height adjusting base;

a second light source 2214 mounted to the left of the vertical center line position of the X-axis moving slide 2210.

A preferred technical solution of this embodiment: the pressure sensor module is mounted on a housing 229, the housing 229 is covered on the X-axis moving slide 2210 and covers the front projection image capturing module and the side projection image capturing module, the lower end of the housing 229 is opened, and the pressure sensor module comprises:

a linear cylinder block mounted on the front side of the housing 229;

a linear cylinder 223 mounted on the linear cylinder block;

an L-shaped bracket in driving connection with the linear cylinder 223;

a pressure sensor 222 mounted on the L-shaped bracket and having a sensor head facing downward;

and the guide post 224 is arranged on the L-shaped bracket, and the guide post 224 penetrates through the linear cylinder block.

A preferred technical solution of this embodiment: as shown in fig. 11, in the rejected transfer group, the second Y-axis moving module 28 includes a bracket 282 of "20866mounted on the pedestal 8, a double row Y-axis guide track 283 mounted on the bracket 282 of" 20866, a second Y-axis motor 281 mounted on the bracket 282 of "20866, a second belt group 284 drivingly connected to the second Y-axis motor 281, and a second slide carriage 285 slidably connected to the double row Y-axis guide track 283, and the second slide carriage 285 is further fixed to the upper belt of the second belt group 284;

the lower disc surface of the unqualified product take-up disc 27 is fixed with the second slide carriage 285 and is also supported by two groups of roller supports;

the roller bracket comprises a supporting plate 272 which is laterally arranged on the bracket 282 of the' 20866, and a roller 271 which is rotatably arranged on the supporting plate 272, wherein the lower disc surface of the rejected material receiving disc 27 is arranged on the two rollers 271.

Example 2:

the invention discloses a detection method of LED patch detection equipment, which comprises the following detection steps:

firstly, an external automatic feeding vehicle sends a test tray 9 filled with LED patches to a feeding platform 211, the feeding platform 211 is provided with a positioning structure to accurately position the test tray 9, and a first X-axis moving module 210 drives a feeding mechanism 23 to reach the upper part of the test tray 9;

step two, the first Z-axis motor 232 on the feeding mechanism 23 drives the second voice coil motor 234 to reach a preset height, the second voice coil motor 234 drives the first vacuum adsorption plate 212 to descend again, so that the adsorption head on the first vacuum adsorption plate is tightly attached to the edge of the test disc 9, the first pressure sensor module 237 senses pressure, and when the pressure reaches the preset value, the second voice coil motor 234 stops working, and the first vacuum negative pressure system is started, so that the first vacuum adsorption plate 212 tightly adsorbs the test disc 9;

step three, the second voice coil motor 234 drives the first vacuum adsorption plate 212 to ascend, the first X-axis moving module 210 drives the feeding mechanism 23 to reach the position above the detection platform 24, the first Z-axis motor 232 drives the second voice coil motor 234 to descend and reach a preset height, the second voice coil motor 234 drives the first vacuum adsorption plate 212 to descend, so that the test disc 9 is placed on the detection platform 24, meanwhile, the first pressure sensor module 237 senses pressure, when the pressure reaches the preset value, the second voice coil motor 234 stops working, and the first vacuum adsorption plate 212 keeps the pressure;

step four, in step three, while the second voice coil motor 234 drives the first vacuum suction plate 212 to descend, the linear air cylinder 223 drives the pressure sensor 222 to abut against the first vacuum suction plate 212 and apply pressure;

step five, the array circuit module on the detection platform 24 is powered on to enable each LED patch to conduct a circuit, when one or more LED patches are not bright, the processing center reads the coordinates of the non-bright LED patches and records all the coordinates to form defective product coordinate signals to be transmitted to the defective product taking manipulator, and the defective product taking manipulator receives all the defective product coordinate signals and waits;

step six, after the power-on detection of the LED patches is completed, the array circuit module is powered off, the pressure sensor 222 is driven to rise by the linear cylinder 223, the second voice coil motor 234 drives the first vacuum adsorption plate 212 to rise, the first Z-axis motor 232 drives the second voice coil motor 234 to rise to a preset height, and the first X-axis moving module 210 resets the feeding mechanism 23;

step seven, exposing an LED patch array on the test disc 9, starting a CCD detection group 22 at the moment, firstly, electrifying an orthographic projection image capturing module to work, and enabling the orthographic projection image capturing module to capture and transmit all images of the test disc 9 to a processing center through the cooperation of a first Y-axis moving module 21 and a third X-axis moving module, wherein the processing center judges whether the LED patches are in the normal position or not through comparing orthographic projection images of the LED patches with preset orthographic projection images, when one or more LED patches in the orthographic projection images and the preset orthographic projection images exceed an error value, the processing center judges that the LED patches corresponding to the error value are unqualified products, generates unqualified product LED coordinates and sends the unqualified product LED coordinates to an unqualified product taking manipulator, and the unqualified product taking manipulator receives all unqualified product coordinate signals and continues to wait;

step eight, the orthographic projection image capturing module is powered off after image capturing is finished, the side projection image capturing module is started, the process is consistent with the process of the step seven, the side projection image capturing module laterally projects an LED patch through a second light source 2214, so that a shadow area of the LED patch and an image of the LED patch are shot by a second CCD image sensor 2212, the second CCD image sensor 2212 transmits the image of the LED patch and the image of the shadow area to a processing center, the processing center judges whether the height of the LED patch meets the requirement or not by judging the projection length of the shadow area, the unqualified LED patches are judged by the processing center and recorded as the coordinates of the unqualified LED patches, and the unqualified LED patches are sent to an unqualified product taking manipulator;

step eight, the side projection image capturing module finishes image capturing and is powered off, the second X-axis moving module 29 drives the discharging mechanism 25 to reach the position above the detection platform 24, the unqualified product material taking manipulator accurately finds the coordinate positions of all unqualified LED patches through the second X-axis moving module 29 and the first Y-axis moving module 21 and grasps the unqualified LED patches one by one, and the second X-axis moving module 29 drives the discharging mechanism 25 to move the unqualified LED patches one by one above the discharging platform 26;

step nine, the unqualified transfer group synchronously receives a coordinate quantity signal of the unqualified LED patches, the second Y-axis moving module 28 drives the unqualified LED patch receiving tray 27 to reach the position below an unqualified product taking manipulator, the unqualified product taking manipulator cancels negative pressure to enable the unqualified LED patches to fall into the unqualified product receiving tray 27, and the unqualified transfer group is reset after all the unqualified LED patches are transferred to the unqualified product receiving tray 27;

step ten, the second X-axis moving module 29 drives the unloading mechanism 25 to the detection platform 24, the unloading mechanism 25 enables the second vacuum adsorption plate 213 to take out the test tray 9 with the qualified LED patches, the second X-axis moving module 29 drives the unloading mechanism 25 to the discharge platform 26, the unloading mechanism 25 cancels the negative pressure, and the test tray 9 with the qualified LED patches is placed on the discharge platform 26;

step eleven, the external automatic discharging vehicle takes down the test disc 9 placed on the discharging platform 26 for storage.

Example 3:

the body outer cover 3 of the LED patch detection equipment is also provided with an alarm lamp 4, and the alarm lamp 4 has an alarm function and prompts machine faults and needs to be maintained.

Example 4:

the bottom of the rack of the LED patch detection equipment is also provided with an exhaust fan 5, an industrial personal computer 6 and a silencing device 7. The exhaust fan 5 is used for radiating heat, the industrial personal computer 6 is used for controlling the operation of the whole mechanism, and the silencing device 7 is used for reducing noise.

Example 5:

as shown in fig. 12, fig. 12 is a structural diagram of another material loading mechanism according to the present invention, a second material loading mechanism 10 replaces the material loading mechanism in fig. 4, the second material loading mechanism 10 includes a platform support 101, an adsorption platform 102, and a positioning head 103, the platform support 101 is mounted on an original first Y-axis moving module 21, the adsorption platform 102 is mounted on the platform support 101, the positioning head 103 is mounted on an edge of one side of the adsorption platform 102, a plurality of detection pins are disposed beside the positioning head 103, a linear negative pressure hole is disposed on the adsorption platform 102, the thin LED module can be adsorbed through the linear negative pressure hole, the thin LED module is positioned by the positioning head 103, and the thin LED module is automatically abutted with the plurality of detection pins after being positioned to form an abutting type electrical connection structure. After the detection pins are powered on, the thin LED module is good if emitting light, and is defective if not emitting light, and then the thin LED module is charged and discharged through the feeding mechanism 23 and the discharging mechanism 25.

In conclusion, the LED patch detection equipment is full-automatic detection equipment, is automatically fed and detected, can separate qualified products from unqualified products after detection, and improves the detection efficiency. According to the invention, each LED patch is positioned in a coordinate mode, the array circuit module is arranged on the test platform (24) for power supply detection of each LED patch, the coordinate of the LED patch which is not bright is judged by the processing center, the coordinate forms a defective product coordinate, the defective product coordinate is sent to a defective product taking manipulator for taking materials, and the defective LED patch is accurately taken out. The invention adopts two groups of CCD image capturing modules which are respectively an orthographic projection image capturing module and a side projection image capturing module, the orthographic projection image capturing module is used for shooting the front side of an LED patch, the formed pattern is compared with a set pattern, the unqualified LED patch is judged to be unqualified when the error of the perimeter size is larger, unqualified coordinates are formed, the unqualified coordinates are sent to an unqualified product material taking mechanical arm to take materials, the unqualified LED patch is accurately taken out, the length of a shadow area of the LED patch is judged through the side projection image capturing module, if the shadow area is larger than the size of the shadow area of a preset image, the thickness of the LED patch is large, if the shadow area is shorter than the size of the shadow area of the preset image, the LED patch is thin, therefore, the unqualified LED patch is judged by a processing center, unqualified coordinates are given, the unqualified coordinates are sent to the unqualified product material taking mechanical arm to take materials, and the unqualified LED patch is accurately taken out. The discharging group of the invention adopts a mode of avoiding the opening to install two groups of mechanisms, so that the unqualified product taking manipulator does not occupy space.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

LED paster check out test set, include frame (1), locate seat (8) in frame (1), install in detection unit (2) on seat (8), its characterized in that, detection unit (2) include:

the material loading mechanism is provided with a first Y-axis moving module (21) and a detection platform set which is in driving connection with the first Y-axis moving module (21) and is driven by the first Y-axis moving module (21) to do Y-axis movement, the detection platform set is provided with a lifting mechanism (2103) and a test platform (24) which is in driving connection with the lifting mechanism (2103), and the test platform (24) is provided with an array circuit module for power supply detection of each LED patch;

the feeding set is provided with a feeding mechanism (23) and a first X-axis moving module (210) for driving the feeding mechanism (23) to reciprocate between a feeding platform (211) and a testing platform (24), the first X-axis moving module (210) is provided with a first vacuum negative pressure system, and the first vacuum negative pressure system forms negative pressure through vacuumizing to adsorb a testing disc (9) on the feeding platform (211) and send the testing disc to the testing platform (24);

the discharging group is provided with a discharging mechanism (25) and a second X-axis moving module (29) for driving the discharging mechanism (25) to reciprocate between the testing platform (24) and the discharging platform (26), the second X-axis moving module (29) is provided with a second vacuum negative pressure system, the second vacuum negative pressure system forms negative pressure through vacuumizing to adsorb a testing disc (9) on the testing platform (24) and send the testing disc to the discharging platform (26), and the discharging group is also provided with a defective product taking manipulator;

the CCD detection group (22) is provided with a portal frame (227) arranged on the seat stand (8), a third X-axis moving module arranged on the portal frame (227), a CCD image sensing module in driving connection with the third X-axis moving module and a pressure sensor module, the range of a shot image of the CCD image sensing module covers the test platform (24), the CCD image sensing module is provided with two groups of CCD image sensors and two groups of light sources, one group of CCD image sensors and one group of light sources form an orthographic projection image capturing module, the other group of CCD image sensors and the other group of light sources form a side projection image capturing module, the orthographic projection image capturing module and the side projection image capturing module respectively capture images and transmit the images to a processing center, the shot images are analyzed and judged to be qualified products and unqualified products by the processing center, the unqualified products give coordinate values, the unqualified products on the test disk (9) are taken out by the unqualified product taking manipulator, and the pressure sensor module can apply pressure to the test disk (9) on the test platform (24);

and the unqualified transferring group is arranged on the seat stand (8) and is provided with a second Y-axis moving module (28) and an unqualified product receiving tray (27) which is driven by the second Y-axis moving module (28) to move in the Y axial direction, and the second Y-axis moving module (28) can drive the unqualified product receiving tray (27) to be received below the unqualified product taking manipulator.
2. The LED patch detection device according to claim 1, wherein the first Y-axis moving module (21) in the loading mechanism comprises:

the first Y-axis motor (2104) is fixed on the seat stand (8) through a first motor base, and two parallel first Y-axis guide rail seats (2101) are further arranged on the seat stand (8);

the two first Y-axis guide rails (2102) are respectively arranged on the two first Y-axis guide rail seats (2101);

the first lead screw (2105) is positioned between the two first Y-axis guide rail seats (2101) and is in driving connection with the first Y-axis motor (2104), and the outer end of the first lead screw (2105) is fixed on the seat stand (8) through the first lead screw seat;

the first sliding seat is connected to the two first Y-axis guide rail seats (2101) in a sliding mode and is in threaded connection with the first lead screw (2105), and the first sliding seat is driven to move in the Y-axis direction by the rotation of the first lead screw (2105).
3. The LED patch detection device according to claim 2, wherein the power source of the lifting mechanism (2103) is a first voice coil motor, the first voice coil motor is fixed on the first sliding base through a voice coil motor base, and the driving end of the first voice coil motor is connected with a platform base.
4. The LED patch testing device according to claim 1, wherein the testing platform (24) has a matrix-type slot surface, each slot surface is provided with an elastic testing pin, and the bottom surface of the testing tray (9) has a contact terminal corresponding to the elastic testing pin.
5. The LED patch detection device according to claim 1, wherein the first X-axis moving module (210) drives the feeding mechanism (23) to move in the X-axis direction through a first belt set.
6. The LED patch detection device according to claim 1, wherein the second X-axis moving module (29) drives the discharging mechanism (25) to move in the X-axis direction through a second belt set.
7. The LED patch detection device according to claim 1, wherein the feeding mechanism (23) comprises:

the first supporting seat (231) is fixed on the first X-axis moving module (210) through a first vertical bracket;

the first Z-axis motor (232) is arranged on one side of the first supporting seat (231) in the Z-axis direction and is in driving connection with a first Z-axis sliding plate (233), and the first Z-axis motor (232) drives the first Z-axis sliding plate (233) to lift;

a second voice coil motor mount (235) mounted on the first Z-axis slide plate (233);

a second voice coil motor (234) mounted to the second voice coil motor mount (235);

the material taking connecting seat (236) is in driving connection with the second voice coil motor (234) and is driven by the second voice coil motor (234) to do lifting motion, and the lower end of the material taking connecting seat (236) is connected with a first vacuum adsorption plate (212);

the first pressure sensor module (237) is installed on the material taking connecting seat (236) and senses the pressure applied to the material taking connecting seat (236).
8. LED patch detection device according to claim 1, wherein said discharge mechanism (25) comprises:

the second supporting seat (251) is fixed on the second X-axis moving module (29) through a second vertical support;

the second Z-axis motor (252) is arranged on one side of the second supporting seat (251) in the Z-axis direction and is in driving connection with a second Z-axis sliding plate (253), and the second Z-axis motor (252) drives the second Z-axis sliding plate (253) to lift;

a third voice coil motor base (255) mounted on the second Z-axis sliding plate (253);

a third voice coil motor (254) mounted on the third voice coil motor base (255);

the discharging connecting seat (256) is in driving connection with the third voice coil motor (254) and is driven by the third voice coil motor (254) to do lifting movement, the lower end of the discharging connecting seat (256) is connected with a second vacuum adsorption plate (213), and the second vacuum adsorption plate (213) is provided with a avoiding hole for the unqualified product taking manipulator to pass through;

and the second pressure sensor module (257) is arranged on the discharging connecting seat (256) and senses the pressure applied to the discharging connecting seat (256).
9. The LED patch detection device of claim 8, wherein the reject picking manipulator comprises:

a fixing plate (2514) horizontally installed on the second supporting seat (251), wherein a through hole is formed in the fixing plate (2514);

the material taking motor (2510) is mounted on the fixing plate, and the material taking motor (2510) is connected with a gear (259) in a driving manner;

the supporting roller (2511) is fixed on the plate surface of the fixing plate (2514) through a support, the rolling surface of the supporting roller (2511) is opposite to the wheel surface of the gear (259), and a gap is reserved between the supporting roller (2511) and the gear (259);

the rack (258) is arranged in the gap in a penetrating way, the side of the insection of the rack is meshed with the gear (259), and the opposite side of the insection of the rack is abutted against the rolling surface of the supporting roller (2511);

the negative pressure device (2512) is installed at the lower end of the rack (258), the negative pressure device (2512) is connected with a downward suction nozzle (2513), and the lifting path of the suction nozzle (2513) can pass through the avoidance hole.
10. The LED patch detection device according to claim 1, wherein the third X-axis moving module comprises an X-axis template mounted on one side of a beam of the portal frame (227), a double-row X-axis guide rail (225) mounted on the X-axis template, an X-axis stepping motor (226) mounted on the X-axis template, a second lead screw (228) in driving connection with the X-axis stepping motor (226), and an X-axis moving slide plate (2210) slidably connected to the double-row X-axis guide rail (225) and in threaded connection with the second lead screw (228).
11. The LED patch testing device of claim 10, wherein said orthographic projection image capturing module comprises:

a first CCD image sensor (2211) with a downward lens, wherein the first CCD image sensor (2211) is arranged on the upper side of the vertical central line position of the X-axis moving sliding plate (2210) through a height adjustable seat (2215);

a first light source (2213) installed at the lower side of the vertical center line of the X-axis moving slide plate (2210), wherein the first light source (2213) is provided with a through hole for the first CCD image sensor (2211) to avoid the lens of the first CCD image sensor (2211);

the side projection image capturing module comprises:

a second CCD image sensor (2212) with a downward lens, wherein the second CCD image sensor (2212) is arranged at the right side of the position of the vertical central line of the X-axis movable sliding plate (2210) and at a position lower than the position of the first CCD image sensor (2211) through a second height adjusting base;

and a second light source (2214) arranged on the left side of the vertical central line position of the X-axis moving sliding plate (2210).
12. The LED patch detection device according to claim 11, wherein the pressure sensor module is mounted on a housing (229), the housing (229) is covered on the X-axis moving slide (2210) and covers the front projection image capture module and the side projection image capture module, the housing (229) is open at a lower end, the pressure sensor module comprises:

a linear cylinder block mounted on the front side of the housing (229);

a linear cylinder (223) mounted on the linear cylinder block;

the L-shaped bracket is in driving connection with the linear cylinder (223);

a pressure sensor (222) mounted on the L-shaped bracket and having a downward sensor head;

and the guide post (224) is arranged on the L-shaped bracket, and the guide post (224) penetrates through the linear cylinder block.
13. The LED patch detection device according to claim 1, wherein in the unqualified transfer group, the second Y-axis moving module (28) comprises a bracket (282) of a ' 20866type mounted on the seat stand (8), a double-row Y-axis guide rail (283) mounted on the bracket (282) of the ' 20866type, a second Y-axis motor (281) mounted on the bracket (282) of the ' 20866type, and a second belt group (284) in driving connection with the second Y-axis motor (281), a second slide carriage (285) in sliding connection with the double-row Y-axis guide rail (283), wherein the second slide carriage (285) is also fixed with an upper belt of the second belt group (284);

the lower disc surface of the unqualified product take-up disc (27) is fixed with the second sliding seat (285) and is also supported by two groups of roller supports;

the roller bracket comprises a supporting plate (272) which is laterally arranged on the bracket (282) of the' 20866, and a roller (271) which is rotatably arranged on the supporting plate (272), and the lower disc surface of the unqualified product take-up pan (27) is arranged on the two rollers (271).
14. A method for detecting an LED patch detection device, comprising the LED patch detection device of any one of claims 1 to 13.
15. The detection method according to claim 14, characterized in that it comprises the following detection steps:

firstly, a test disc (9) filled with LED patches is conveyed into a feeding platform (211) by an external automatic feeding vehicle, the feeding platform (211) is provided with a positioning structure to accurately position the test disc (9), and a first X-axis moving module (210) drives a feeding mechanism (23) to reach the upper part of the test disc (9);

secondly, a first Z-axis motor (232) on the feeding mechanism (23) drives a second voice coil motor (234) to reach a preset height, the second voice coil motor (234) drives a first vacuum adsorption plate (212) to descend, an adsorption head on the first vacuum adsorption plate is made to be tightly attached to the edge of the test disc (9), a first pressure sensor module (237) senses pressure, when the pressure reaches a preset value, the second voice coil motor (234) stops working, a first vacuum negative pressure system is started, and the first vacuum adsorption plate (212) is made to tightly adsorb the test disc (9);

step three, a second voice coil motor (234) drives a first vacuum adsorption plate (212) to ascend, a first X-axis moving module (210) drives a feeding mechanism (23) to reach the position above a detection platform (24), a first Z-axis motor (232) drives a second voice coil motor (234) to descend and reach a preset height, the second voice coil motor (234) drives the first vacuum adsorption plate (212) to descend to enable a test disc (9) to be placed on the detection platform (24), meanwhile, a first pressure sensor module (237) senses pressure, when the pressure reaches the preset value, the second voice coil motor (234) stops working, and the first vacuum adsorption plate (212) keeps the pressure;

step four, in the step three, the second voice coil motor (234) drives the first vacuum adsorption plate (212) to descend, and simultaneously, the linear air cylinder (223) drives the pressure sensor (222) to abut against the first vacuum adsorption plate (212) and apply pressure;

fifthly, electrifying the array circuit module on the detection platform (24) to enable each LED patch to conduct a circuit, reading the coordinates of the unlighted LED patches when one or more LED patches are unlighted by the processing center, recording all the coordinates to form defective product coordinate signals and transmitting the defective product coordinate signals to the defective product taking manipulator, and receiving all the defective product coordinate signals by the defective product taking manipulator and waiting;

step six, after the power-on detection of the LED patches is finished, the array circuit module is powered off, the pressure sensor (222) is driven to ascend by the linear cylinder (223), the second voice coil motor (234) drives the first vacuum adsorption plate (212) to ascend, the first Z-axis motor (232) drives the second voice coil motor (234) to ascend to a preset height, and the first X-axis moving module (210) resets the feeding mechanism (23);

seventhly, exposing an LED patch array on the test disc (9), starting a CCD detection group (22) at the moment, firstly, electrifying the orthographic projection image capturing module to work, enabling the orthographic projection image capturing module to capture and transmit all images of the test disc (9) to a processing center through the cooperation of the first Y-axis moving module (21) and the third X-axis moving module, comparing an orthographic projection image of the LED patch with a preset orthographic projection image by the processing center, judging whether the LED patch is in an orthographic position, when one or more LED patches in the orthographic projection image and the preset orthographic projection image exceed an error value, judging that the LED patch corresponding to the error value is a defective product by the processing center, generating LED coordinates of the defective product, sending the LED coordinates of the defective product to a defective product taking manipulator, and receiving all defective product coordinate signals by the defective product taking manipulator and continuously waiting;

step eight, the orthographic projection image capturing module is powered off after image capturing is finished, the side projection image capturing module is started, the process is consistent with the process in the step seven, the side projection image capturing module laterally projects an LED patch through a second light source (2214), so that a shadow area of the LED patch and an LED patch image are shot by a second CCD image sensor (2212), the second CCD image sensor (2212) transmits the LED patch image and the shadow area image to a processing center, the processing center judges whether the height of the LED patch meets the requirement or not by judging the projection length of the shadow area, the unqualified LED patch is judged by the processing center, the unqualified LED patch coordinate is recorded, and the unqualified LED patch coordinate is sent to an unqualified product taking manipulator;

step eight, the side projection image capturing module finishes image capturing and is powered off, the second X-axis moving module (29) drives the discharging mechanism (25) to reach the position above the detection platform (24), the unqualified product material taking manipulator accurately finds the coordinate positions of all unqualified LED patches through the second X-axis moving module (29) and the first Y-axis moving module (21) and grasps the unqualified LED patches one by one, and the second X-axis moving module (29) drives the discharging mechanism (25) to move the unqualified LED patches one by one to the position above the discharging platform (26);

step nine, the unqualified transfer group synchronously receives a coordinate quantity signal of the unqualified LED patches, the second Y-axis moving module (28) drives the unqualified LED patch receiving tray (27) to reach the position below the unqualified LED patch taking manipulator, the unqualified LED patch taking manipulator cancels negative pressure to enable the unqualified LED patches to fall into the unqualified LED patch receiving tray (27), and the unqualified transfer group resets after all the unqualified LED patches are transferred to the unqualified LED patch receiving tray (27);

step ten, the second X-axis moving module (29) drives the discharging mechanism (25) to the detection platform (24), the discharging mechanism (25) enables the second vacuum adsorption plate (213) to take out the test disc (9) with the qualified LED patches, the second X-axis moving module (29) drives the discharging mechanism (25) to the discharging platform (26), the discharging mechanism (25) cancels negative pressure, and the test disc (9) with the qualified LED patches is placed on the discharging platform (26);

step eleven, the external automatic discharging vehicle takes down the test disc (9) placed on the discharging platform (26) for storage.