CN111085463A

CN111085463A - Sorting device

Info

Publication number: CN111085463A
Application number: CN201911373485.8A
Authority: CN
Inventors: 陈东风
Original assignee: Suzhou Hirose Opto Co Ltd
Current assignee: Suzhou Hirose Opto Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-05-01

Abstract

The invention belongs to the technical field of product sorting, and discloses a sorting device which is used for sorting detection objects and comprises a detection mechanism, a carrying mechanism and at least three caching mechanisms, wherein the detection mechanism is used for judging whether the detected detection objects are qualified products or defective products, the carrying mechanism is used for carrying the detection objects between the detection mechanism and the at least three caching mechanisms, and the at least three caching mechanisms comprise: the first buffer mechanism is used for providing trays bearing detection objects to be detected for the carrying mechanism one by one, and can be used for superposing and outputting empty trays; the second buffer memory mechanism is used for supplying empty trays to the conveying mechanism one by one and can superpose and output trays full of qualified products; and a third buffer mechanism for supplying empty trays one by one to the carrying mechanism and stacking and outputting trays full of defective products. The sorting device can efficiently and accurately perform sorting operation.

Description

Sorting device

Technical Field

The invention relates to the technical field of product sorting, in particular to a sorting device.

Background

After the display device (such as a screen applied to an electronic device such as a mobile phone, a notebook computer, a tablet computer, etc.) is processed, the display device needs to be detected to detect whether the display device has appearance defects such as scratches and the like, abnormal brightness, pixel defect, bright/dark spot, broken line, light leakage and other display defect problems, so that the display device is classified into a qualified product or a defective product.

Generally, the turnover of semi-finished products and finished products of display devices requires the display devices to be placed in trays (Tray) to prevent damage, so in the sorting operation of the display devices, the display devices need to be manually taken out one by one from the trays carrying the display devices and placed in a detection device for detection, and after the detection is finished, the qualified or unqualified display devices are manually and distinctively placed in different trays. And after the tray is fully loaded, still need the manual work to put things in good order the tray, select separately the operating efficiency low, and artifical intensity of labour is big in the whole operation of selecting separately, inevitably can cause because of manual operation error to select separately the mistake.

Disclosure of Invention

The invention aims to provide a sorting device which can efficiently and accurately sort detection objects.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a sorting unit for select separately the detection object, includes detection mechanism, transport mechanism and at least three buffer memory mechanism, detection mechanism is used for judging the detection object that is detected and is certified products or defective products, transport mechanism is used for in detection mechanism and at least three buffer memory mechanism between transport the detection object, at least three buffer memory mechanism includes:

the first buffer mechanism is used for providing trays bearing detection objects to be detected for the carrying mechanism one by one, and can be used for stacking and outputting empty trays;

a second buffer mechanism for supplying empty trays one by one to the carrying mechanism and capable of stacking and outputting trays full of the non-defective products; and

and the third buffer mechanism is used for providing empty trays for the carrying mechanism one by one, and can superpose and output the trays fully loaded with the defective products.

Preferably, the cache mechanism comprises a sub-tray part, a transfer part and a storage part located below the sub-tray part, wherein:

the tray dividing part is used for conveying trays to the transfer part one by one;

the transfer part comprises a bracket and a driving unit; the bracket is used for receiving and carrying the tray output by the tray dividing part; the driving unit is capable of descending step by step so that the trays can be received and stacked one by the carriers and the stacked trays can be unloaded to the storage part after the carriers are fully loaded;

the storage part is used for storing and outputting the stacked trays.

Preferably, the sorting device further comprises a fool-proof cylinder, and an output shaft of the fool-proof cylinder can abut against the side wall of the tray to adjust the tray to a preset position.

Preferably, the plate dividing portion includes:

a conveying assembly capable of conveying the stacked trays toward a distal end thereof;

a pair of tray assemblies capable of cooperatively lifting stacked trays at the end of the conveyor assembly and for individually presenting the trays to the conveyor assembly; and

and the pair of transfer components can slide to and fro between the conveying component and the bracket so as to transfer the tray positioned at the tail end of the conveying component to the bracket in a matching way.

Preferably, the buffer mechanism further includes a pair of holders, the transport unit and the storage unit are both provided between the pair of holders, the pair of tray units and the pair of transfer units are each provided on the pair of holders so as to face each other, and the pair of holders are slidable toward each other or away from each other.

Preferably, the pair of transfer units are slidably connected to the pair of racks, respectively, and the pair of tray units are connected to the pair of racks so that the mounting positions thereof are adjustable.

Preferably, the buffer mechanism further comprises an adjusting part, the adjusting part comprises a substrate fixed with the ground, a pair of coaxial lead screws fixedly connected with the shaft ends are rotatably arranged on the substrate, the threads of the pair of lead screws are reversely arranged and are respectively in threaded connection with nuts, and the pair of nuts are respectively and fixedly connected with the pair of brackets.

Preferably, the storage section comprises a pair of spaced conveyors, the spacing between the pair of conveyors being less than the width of the tray, such that stacked trays carried by the carrier can be carried on the pair of conveyors when the carrier is lowered between the pair of conveyors.

Preferably, the sorting device further comprises an identification unit electrically connected to the carrying mechanism, and the identification unit is configured to identify a position of the detection object to be detected on the tray.

Preferably, the first buffer mechanism and the detection mechanism are disposed in close proximity, and the second buffer mechanism and the third buffer mechanism are disposed in close proximity.

The invention has the beneficial effects that:

according to the sorting device provided by the invention, the conveying mechanism can pick up the detection object to be detected from the tray of the first caching mechanism and convey the detection object to the detection mechanism, and convey the detection object with qualified detection result to the tray of the second caching mechanism, or convey the detection object with bad detection result to the tray of the third caching mechanism. The first buffer mechanism can output overlapped empty trays, the second buffer mechanism and the third buffer mechanism can output overlapped trays carrying qualified products and defective products respectively, and in the sorting operation, personnel do not intervene in the detection and sorting links, so that sorting errors caused by manual operation errors are avoided.

Drawings

FIG. 1 is a schematic view of the structure of a sorting apparatus in an embodiment of the present invention;

FIG. 2 is a layout view of a sorting apparatus in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a buffer mechanism with a tray according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a caching mechanism according to an embodiment of the invention when a tray is not loaded;

FIG. 5 is a schematic structural diagram of a panel splitting assembly in an embodiment of the present invention;

FIG. 6 is a schematic view of a mating structure of the conveying assembly, the transfer assembly and the carrier according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a transfer assembly according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a bracket and an adjusting part in an embodiment of the present invention.

In the figure:

100. a tray; 101. a containing groove;

1. a detection mechanism;

2. a carrying device;

3. a caching mechanism; 301. a first caching mechanism; 302. a second cache mechanism; 303. a third caching mechanism;

31. a disc segment; 311. a delivery assembly; 312. a disc separating component; 3121. a splint; 3122. a first cylinder; 3123. a second cylinder; 313. a transfer component; 3131. a first slide rail; 3132. a clamping plate; 3133. a third cylinder; 3134. a fourth cylinder;

32. a transfer section; 321. a bracket; 322. a drive unit;

33. a storage unit; 331. a conveyor belt;

4. a correlation type photoelectric switch; 41. light rays;

5. a fool-proof cylinder;

6. a support;

7. an adjustment part; 71. a substrate; 72. a screw rod; 73. a nut;

8. a second slide rail.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a sorting unit, and this sorting unit can be applied to the product detection link, and it can replace the manual work to select separately the operation to distinguish defective products and certified products in the product, improve sorting efficiency and rate of accuracy. The sorting device can be suitable for detection objects which can be borne in the tray, such as semi-finished products or finished products of display devices, ornaments, electronic and mechanical parts and the like. The tray that its during operation can directly receive the superpose and bear the weight of the detected object to take out the detected object that awaits measuring in the tray or put into and detect the tray of accomplishing the back exportation superpose again, be convenient for transport. The sorting apparatus will be described in detail below with a display device as a specific detection target.

Referring to fig. 1, the sorting apparatus includes a detecting mechanism 1, a conveying mechanism 2, and at least three buffer mechanisms 3. The detection mechanism 1 is used for judging whether the detected display device is a qualified product or a defective product, and the conveying mechanism 2 is used for conveying the display device between the detection mechanism 1 and at least three buffer mechanisms 3, namely conveying the display device to be detected to the detection mechanism 1 and conveying the detected display device to different trays 100 according to the qualified product and the defective product.

In this embodiment, the sorting apparatus includes three buffer mechanisms 3, specifically, a first buffer mechanism 301, a second buffer mechanism 302, and a third buffer mechanism 303. The first buffer mechanism 301 is used to supply the trays 100 carrying the display devices to be inspected to the carrying mechanism 2 one by one, and can stack and output empty trays 100. The second buffer mechanism 302 is used to supply empty trays 100 one by one to the conveyance mechanism 2, and is capable of stacking and outputting trays 100 full of non-defective products. The third buffer mechanism 303 is used to supply empty trays 100 one by one to the conveyance mechanism 2, and is capable of stacking and outputting trays 100 full of defective products.

Referring to fig. 1 in conjunction with fig. 2, during the sorting operation, the transporting mechanism 2 picks up the display device to be detected from the tray 100 of the first buffer mechanism 301 and transports the display device to the detecting mechanism 1, after the detecting mechanism 1 finishes the detecting, the detecting result is fed back to the control unit (such as a PLC controller) of the robot, and then the transporting mechanism 2 transports the display device with a qualified detecting result to the tray 100 of the second buffer mechanism 302, or transports the display device with a bad detecting result to the tray 100 of the third buffer mechanism 303.

The operation of the operator is only directed to placing the stacked (or single) trays 100 carrying the display devices into the first buffer mechanism 301 and taking out the stacked trays 100 from the first buffer mechanism 301, and to placing the empty stacked (or single) second and third trays 100 into the second and

third buffer mechanisms

302 and 303, respectively, and taking out the stacked trays 100 carrying the non-defective products and the non-defective products from the second and

third buffer mechanisms

302 and 303, respectively. The manual operation content is simple, the detection and sorting links are not involved, and the sorting error caused by manual operation errors is avoided. Of course, in other alternative embodiments, the number of the buffer mechanisms 3 may also be four, five or other numbers to match the number or the working cycle of the detection mechanisms 1 and the conveying mechanisms 2, so as to improve the sorting efficiency.

In this embodiment, the detection mechanism 1 may include a clamp for fixing and energizing the display device, a camera for acquiring an appearance and an imaging image of the display device, an auxiliary light source, and the like, so as to specifically detect whether the display device has appearance defects such as scratches and display defects such as water ripples, abnormal brightness, pixel dead spots, bright/dark spots, dead lines, and light leakage. The above-mentioned detection mechanism 1 has been widely used in the prior art, and is not described herein. Of course, in other alternative embodiments, the detection mechanism may be specifically configured as a corresponding detection element according to different detection objects and detection items, such as detecting the contour size of the product by a laser scanner, measuring the coating thickness of the product by an infrared thickness gauge, and the like.

In this embodiment, the carrying mechanism 2 may be a four-axis manipulator, and a vacuum suction nozzle is disposed at the end of the manipulator, so that the carrying mechanism 2 can hold the display device through the vacuum suction nozzle, and then carry the display device accurately and stably. In order to shorten the tact time of the conveying work of the conveying mechanism 2, the first buffer mechanism 301 may be arranged adjacent to the detection mechanism 1, so as to shorten the stroke of the conveying mechanism 2 from the first buffer mechanism 301 to the detection mechanism 1; the second buffer mechanism 302 may be disposed adjacent to the third buffer mechanism 303 to shorten a blanking stroke when the transporting mechanism 2 places qualified parts and defective parts into the second buffer mechanism 302 and the third buffer mechanism, respectively.

Preferably, as shown in fig. 2, the first buffer mechanism 301, the second buffer mechanism 302 and the third buffer mechanism 303 may be disposed in close proximity in sequence, the detection mechanism 1 is located at one side of the first buffer mechanism 301, and the carrying mechanism 2 is located at one side of the second detection mechanism 1 in close proximity to the detection mechanism 1, so as to shorten the maximum stroke during the transferring operation of the robot, shorten the length of the cross arm of the robot, and reduce the equipment configuration cost.

Referring to fig. 3 and 4, in order to fulfill the operation requirement of loading and outputting the trays 100, the buffer mechanism 3 may specifically include a tray part 31, a transferring part 32, and a storage part 33 located below the tray part 31, wherein the tray part 31 is used for conveying the trays 100 to the transferring part 32 one by one; transfer section 32 includes a carriage 321 and a drive unit 322; the bracket 321 is used for receiving and carrying the tray 100 output by the sub-tray part 31; the driving unit 322 can be lowered stepwise so that the carriers 321 can receive and stack the trays 100 one by one, and can unload the stacked trays 100 to the storage part 33 after the carriers 321 are fully loaded; the storage part 33 is used to store and output the stacked trays 100.

With the above structure, the tray separating part 31 can convey the trays 100 to the transfer part 32 one by one to avoid frequent manual work, and the bracket 321 can receive the trays 100 one by one under the step-down driving of the driving unit 322, so that a plurality of trays 100 can be stacked on the bracket 321, frequent lifting is avoided, and time consumption of tray separating work is reduced. It is understood that the distance that the driving unit 322 drives the bracket 321 to step down is the height difference generated when the trays 100 are stacked.

In the present embodiment, the tray part 31 includes a conveying unit 311, a pair of tray units 312, and a pair of transfer units 313. The conveying member 311 may be a conveyor belt or a conveying roller, etc., to convey the stacked trays 100 toward the ends thereof when it is operated. A pair of tray assemblies 312 can cooperate to lift stacked trays 100 at the end of the conveyor assembly 311 and serve to supply trays 100 to the conveyor assembly 311 one by one. The pair of transfer members 313 can slidably move to and from the transport member 311 and the tray 321 to cooperate with transferring the tray 100 located at the end of the transport member 311 to the tray 321.

A pair of plate dividing assemblies 312 are respectively disposed at both sides of the end of the conveying assembly 311, as shown in fig. 4 and 5, the plate dividing assemblies 312 include a clamping plate 3121, a first cylinder 3122, and a second cylinder 3123. The clamping plate 3121 extends in a vertical direction and parallel to the extension direction of the conveyor assembly 311, and the bottom of the clamping plate 3121 is provided with a landing edge extending towards the conveyor assembly 311. An output shaft of the first air cylinder 3122 is fixedly connected with the clamping plate 3121 so as to drive the clamping plate 3121 to lift. An output shaft of the second cylinder 3123 is fixedly connected to the first cylinder 3122, so as to drive the first cylinder 3122 to drive the clamping plate 3121 to move towards or away from the conveying assembly 311 in a reciprocating manner.

The tray dividing operation process of the pair of tray dividing assemblies 312 for supplying the trays 100 to the conveying assembly 311 one by one may be:

the end of the conveyor assembly 311 flows into the stacked trays 100;

the output shafts of the pair of second cylinders 3123 are extended toward the conveying unit 311, so that the overlapping edges of the bottoms of the pair of clamping plates 3121 are inserted into the stacked pallets 100 from the bottom to the bottom below the rim (which extends outward) of the second pallet 100;

the output shafts of the pair of first cylinders 3122 extend upward, and after the remaining pallets 100 except the pallet 100 located at the lowermost position are lifted, one pallet 100 is left at the end of the transport unit 311 for transfer by the transfer unit 313.

The pair of transferring members 313 may be slidably connected to the pair of first sliding rails 3131, and both ends of the first sliding rail 3131 extend to the end of the transporting member 311 and the tray 321, respectively, so that the pair of transferring members 313 can cooperate to transfer the tray 100 at the end of the transporting member 311 to the tray 321.

As shown in fig. 6 and 7, the transfer assembly 313 includes a holding plate 3132, a third air cylinder 3133, and a fourth air cylinder 3134. The catching plate 3132 extends in a horizontal direction, and a side thereof facing the feeding unit 311 is provided with a catch capable of catching an edge of the tray 100. An output shaft of the third cylinder 3133 is fixedly connected to the clamping plate 3132, so as to drive the clamping plate 3132 to move up and down. An output shaft of the fourth cylinder 3134 is fixedly connected to the third cylinder 3133, so as to drive the third cylinder 3133 to drive the clamp plate 3121 to move reciprocally toward or away from the transmission assembly 311, and the fourth cylinder 3134 is slidably connected to the first sliding rail 3131.

With the above-described configuration, the transfer operation process of the pair of transfer units 313 for transferring the tray 100 from the transfer unit 311 to the tray 321 may be:

after the tray separating assembly 312 completes the tray separating operation, the end of the conveying assembly 311 carries a tray 100;

the output shafts of the pair of fourth cylinders 3134 extend toward the conveying assembly 311, so that the bayonets of the pair of clamping plates 3132 are clamped into the edge of the tray 100;

an output shaft of the pair of third cylinders 3133 extends upward to lift the clamping plate 3132 and drive the tray 100 to ascend;

the pair of transfer units 313 slide to the side of the bracket 321 along the first guide rail, so that the tray 100 is positioned above the bracket 321;

the output shafts of the pair of third cylinders 3133 and the pair of fourth cylinders 3134 are sequentially contracted, and the pallet 100 is placed on the bracket 321 or the pallet 100 loaded on the bracket 321, thereby completing the transfer operation.

Alternatively, a plurality of sets of stacked trays 100 may be placed on the conveying unit 311 at the same time, so that after the trays 100 at the end of the conveying unit 311 are all moved onto the tray 321 by the transfer unit 313, the conveying unit 311 can timely convey the tray 100 at the upstream side to the end thereof after rotating, so as to transfer the tray 100 to the tray 321 without interruption. For example, as shown in fig. 5, a correlation photoelectric switch 4 for detecting the tray 100 may be provided above the adjacent lap of the pair of the tray units 312, and when the tray 100 is loaded on the pair of the tray units 312, the light 41 emitted from the light emitting element of the correlation photoelectric switch 4 is blocked by the tray 100 and cannot be received by the light receiving element of the correlation photoelectric switch 4. When all the trays 100 carried on the pair of tray separating units 312 are separated, the light receiving element can receive the light 41 emitted by the light emitting element, so as to form a switch signal, and the control unit of the conveying unit 311 can control the conveying unit 311 to rotate.

In this embodiment, the driving unit 322 of the transferring part 32 may be a vertically disposed linear module, the linear module may include a screw nut pair and a servo motor, and the bracket 321 is fixedly connected to the nut part of the screw nut pair, so that when the servo motor drives the screw part of the screw nut pair to rotate in the forward or reverse direction, the bracket 321 can be lifted along with the nut part.

In the present embodiment, the storage part 33 includes a pair of conveyor belts 331 disposed at intervals, and the interval between the pair of conveyor belts 331 is smaller than the width of the tray 100 and larger than the width of the bracket 321, so that when the bracket 321 descends between the pair of conveyor belts 331, the stacked tray 100 carried by the bracket 321 can be carried on the pair of conveyor belts 331, and after the conveyor belts 331 rotate, the stacked tray 100 carried on the conveyor belts 331 moves along with the conveyor belts 331, so that the bracket 321 can be lifted by the driving unit 322 to receive the tray 100 again.

To protect the display devices in circulation, the tray 100 generally has a receiving groove 101 therein for receiving the display devices. The receiving chamber 101 generally has a shape that is specific to the external shape of the display device so that the display device can be placed in the receiving chamber 101 in a specific posture for the carrying operation of the carrying mechanism 2 and the inspection operation of the inspection apparatus. Since the trays 100 received by the buffer mechanism 3 are manually placed on the conveying assembly 311, there is a wrong posture (e.g. rotated by 180 degrees) of the individual trays 100 due to manual operation error, and the wrong posture of the tray 100 will cause the conveying device 2 not to accurately pick up the display device or damage the display device when the display device with the wrong posture is placed in the fixture of the detection device.

Therefore, referring to fig. 6 in combination with fig. 8, the sorting apparatus further includes a fool-proof cylinder 5, and an output shaft of the fool-proof cylinder 5 can abut against a side wall of the tray 100 to adjust the tray 100 to a predetermined position.

Specifically, the fool-proof cylinder 5 may be disposed near the end of the first sliding rail 3131, and the output shaft thereof is configured to reach the maximum stroke to abut against the side wall of the tray 100 with the correct placement posture, which is the uppermost one of the brackets 231. When the transfer unit 313 performs the transfer operation and transfers a tray 100 to the tray 231 or the tray 100 on the tray, the fool-proof cylinder 5 extends out of the output shaft thereof to move toward the tray 100, if the tray 100 is correctly prevented from being in the correct posture, the fool-proof cylinder 5 extends out of the output shaft thereof to be just abutted against the side wall of the tray 100, and if the tray 100 is incorrectly prevented from being in the wrong posture, the fool-proof cylinder 5 extends out of the output shaft thereof to be abutted against the tray 100, and then the tray 100 is adjusted to the correct posture.

As previously described, the display device is generally placed in the pocket 101 of the tray 100. The size of the tray 100 varies based on the different sizes or types of display devices. In order to facilitate the adaptation to the trays 100 of different sizes, the buffer mechanism 3 further includes a pair of brackets 6, the conveying unit 311 and the storage unit 33 are both disposed between the pair of brackets 6, the pair of tray dividing units 312 and the pair of transfer units 313 are both disposed on the pair of brackets 6 in an opposing manner, and the pair of brackets 6 can slide in the opposite direction or in the opposite direction, so that the distance between the pair of tray dividing units 312 and the pair of transfer units 313 can be adjusted after the brackets 6 slide, thereby facilitating the tray dividing operation and the transfer operation of the pair of tray dividing units 312 and the pair of transfer units 313, respectively.

Specifically, in the present embodiment, the pair of first sliding rails 3131 are fixed to the pair of brackets 6, respectively, so that the pair of transfer units 313 are slidably connected to the pair of brackets 6, respectively. The bracket 6 may be provided with a strip-shaped groove or a plurality of sets of mounting holes for mounting the subdisc assembly 312, so that the mounting positions of the pair of subdisc assemblies 312 are adjustably connected to the pair of brackets 6.

In order to automatically and accurately adjust the distance between the brackets 6, the buffer mechanism 3 further comprises an adjusting part 7, the adjusting part 7 comprises a base plate 71 directly or indirectly fixed with the ground, a pair of coaxial lead screws 72 fixedly connected with the shaft ends are rotatably arranged on the base plate 71, the threads of the pair of lead screws 72 are reversely arranged and are all in threaded connection with nuts 73, and the pair of nuts 73 are respectively connected with the pair of brackets 6.

Specifically, the extending direction of the screw 72 is perpendicular to the extending direction of the buffer mechanism 3 (i.e. the extending direction of the conveying assembly 311 and the moving direction of the transferring assembly 313), the bottoms of the pair of brackets 6 are respectively slidably connected to the second slide rail 8, and the extending direction of the second slide rail 8 is also perpendicular to the extending direction of the buffer mechanism 3, so that when the pair of screws 72 rotate forward or backward, the nuts 73 respectively connected to the pair of screws 72 can move toward or away from each other, thereby driving the pair of brackets 6 to move toward or away from each other.

Not only the size of the tray 100 is different but also the size and type of the receiving slot 101 of the tray 100 for receiving the display device are different based on the display devices of different sizes or types, for example, one receiving slot 101 may receive one display device, or one receiving slot 101 may receive a plurality of display devices that are tiled at intervals.

Therefore, in order to enable the carrying mechanism 2 to accurately pick up the display devices on the tray 100, the sorting apparatus further includes an identification unit (not shown in the drawings) electrically connected to the carrying mechanism 2, the identification unit being configured to identify the positions of the display devices to be inspected on the tray 100.

Alternatively, the identification unit may include a CCD camera or the like disposed above the bracket 321 of the first buffer mechanism 301, so as to identify the specific position of the display device in the cover tray 100 according to the image captured by the CCD camera or the like on the tray 100 carried by the bracket 321, so as to transmit the specific position coordinate to the carrying mechanism 2, so that the carrying mechanism 2 can adjust the motion trajectory to carry each display device to the detection mechanism 1.

The above examples of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The sorting device is used for sorting detection objects and is characterized by comprising a detection mechanism (1), a carrying mechanism (2) and at least three buffer mechanisms (3), wherein the detection mechanism (1) is used for judging whether the detected detection objects are qualified products or defective products, the carrying mechanism (2) is used for carrying the detection objects between the detection mechanism (1) and the at least three buffer mechanisms (3), and the at least three buffer mechanisms (3) comprise:

a first buffer mechanism (301), wherein the first buffer mechanism (301) is used for supplying trays (100) bearing detection objects to be detected to the conveying mechanism (2) one by one, and can be used for stacking and outputting empty trays (100);

a second buffer mechanism (302), wherein the second buffer mechanism (302) is used for supplying the empty trays (100) to the conveying mechanism (2) one by one and stacking and outputting the trays (100) fully loaded with the qualified products; and

a third buffer mechanism (303), wherein the third buffer mechanism (303) is used for supplying empty trays (100) to the conveying mechanism (2) one by one, and can stack and output the trays (100) fully loaded with the defective products.

2. Sorting device according to claim 1, characterised in that the buffer means (3) comprise a tray section (31), a transfer section (32) and a storage section (33) located below the tray section (31), wherein:

the tray part (31) is used for conveying trays (100) to the transfer part (32) one by one;

the transfer section (32) comprises a carriage (321) and a drive unit (322); the bracket (321) is used for receiving and carrying the tray (100) output by the partial tray part (31); the driving unit (322) being capable of descending stepwise so that the carriers (321) can receive and stack the trays (100) one by one and can unload the stacked trays (100) to the storage part (33) after the carriers (321) are fully loaded;

the storage part (33) is used for storing and outputting the stacked trays (100).

3. Sorting device according to claim 2, characterised in that it further comprises a fool-proof cylinder (5), the output shaft of which cylinder (5) can abut against the side wall of the tray (100) to adjust the tray (100) to a preset position.

4. Sorting device according to claim 2, characterised in that the pan section (31) comprises:

a conveying assembly (311), the conveying assembly (311) being capable of conveying the stacked trays (100) towards an end thereof;

a pair of tray assemblies (312), a pair of said tray assemblies (312) being capable of cooperating to lift stacked trays (100) at the end of said conveyor assembly (311) and for supplying said trays (100) one by one to said conveyor assembly (311); and

and the pair of transfer components (313) can slide to and fro between the conveying component (311) and the bracket (321) so as to transfer the tray (100) positioned at the tail end of the conveying component (311) to the bracket (321) in a matching way.

5. The sorting apparatus according to claim 4, wherein the buffer mechanism (3) further includes a pair of supports (6), the transport unit (311) and the storage unit (33) are provided between the pair of supports (6), the pair of tray units (312) and the pair of transfer units (313) are provided on the pair of supports (6) so as to face each other, and the pair of supports (6) are slidable toward or away from each other.

6. The sorting apparatus according to claim 5, wherein a pair of the transfer members (313) are slidably coupled to a pair of the supports (6), respectively, and a pair of the tray members (312) are adjustably coupled to a pair of the supports (6) at their mounting positions.

7. The sorting device according to claim 5, wherein the buffer mechanism (3) further comprises an adjusting portion (7), the adjusting portion (7) comprises a base plate (71) fixed with the ground, a pair of coaxial lead screws (72) fixedly connected with the shaft ends are rotatably arranged on the base plate (71), the threads of the pair of lead screws (72) are oppositely arranged and are respectively and spirally connected with nuts (73), and the pair of nuts (73) are respectively and fixedly connected with the pair of brackets (6).

8. The sorting apparatus according to claim 2, wherein the storage portion (33) includes a pair of conveyor belts (331) disposed at a distance from each other, the distance between the pair of conveyor belts (331) being smaller than the width of the tray (100), so that the stacked trays (100) carried by the carrier (321) can be loaded on the pair of conveyor belts (331) when the carrier (321) is lowered between the pair of conveyor belts (331).

9. The sorting device according to claim 1, further comprising an identification unit electrically connected to the handling mechanism (2) for identifying a position of an inspection object to be inspected on the tray (100).

10. Sorting device according to claim 1, characterised in that the first buffer means (301) and the detection means (1) are arranged in close proximity, and the second buffer means (302) and the third buffer means (303) are arranged in close proximity.