CN111846856A

CN111846856A - Tray cleaning device

Info

Publication number: CN111846856A
Application number: CN202010682360.XA
Authority: CN
Inventors: 周文健; 王莹; 孙建军; 李鹏; 王瑞; 王博
Original assignee: Beijing Yunhui Intelligent Technology Co ltd
Current assignee: Beijing Yunhui Intelligent Technology Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-10-30

Abstract

The embodiment of the invention discloses a tray cleaning device, which comprises: the device comprises a tray conveying mechanism, a tray taking and placing mechanism, a cleaning mechanism, a pressing conveying mechanism and a controller; the tray conveying mechanism is provided with an inlet end and an outlet end and is used for conveying the tray from the inlet end to the outlet end; the tray taking and placing mechanism is provided with two inlet ends and two outlet ends which are respectively arranged at the tray conveying mechanism; the cleaning mechanism is arranged in the middle of the tray conveying mechanism; the pressing conveying mechanism is arranged on the tray conveying mechanism and is positioned above the cleaning mechanism; the controller is electrically connected with the tray conveying mechanism, the tray taking and placing mechanism, the cleaning mechanism and the pressing conveying mechanism. The operation of each electric connecting part is controlled through the controller, the automatic cleaning process of the tray is completed, the whole process does not need manual participation, the cleaning effect is guaranteed, human resources are saved, and the tray cleaning speed is improved.

Description

Tray cleaning device

Technical Field

The invention belongs to the technical field of mechanical automation, and particularly relates to a tray cleaning device.

Background

Need use the tray to transport the material with the splendid attire in some industrial production, the material has remained on the tray after being carried the completion, in order to avoid the influence of remaining material, needs clear up the tray, clears away the residue in the tray.

However, the current process of cleaning the trays is generally full-manual or semi-manual cleaning, so that when the number of the trays needing to be cleaned is large, the cleaned trays cannot be supplied due to the slow manual speed.

Therefore, how to fully automatically clean the tray becomes a technical problem to be solved urgently at present.

Disclosure of Invention

In view of the above, the present invention proposes a tray cleaning apparatus to overcome or at least partially solve the above problems.

According to an aspect of an embodiment of the present invention, there is provided a tray cleaning apparatus including: the device comprises a tray conveying mechanism, a tray taking and placing mechanism, a cleaning mechanism, a pressing conveying mechanism and a controller;

the tray conveying mechanism is provided with an inlet end and an outlet end, and a tray conveying channel is formed from the inlet end to the outlet end;

the tray taking and placing mechanism is provided with two inlet ends and two outlet ends which are respectively arranged at the inlet end and the outlet end of the tray conveying mechanism and used for placing the tray at the inlet end or taking the tray from the outlet end;

the cleaning mechanism is arranged on the conveying channel of the tray conveying mechanism and used for cleaning the tray;

the pressing conveying mechanism is arranged on the tray conveying mechanism, is positioned above the cleaning mechanism and is used for pressing the tray on the cleaning mechanism;

The controller is electrically connected with the tray conveying mechanism, the tray taking and placing mechanism, the cleaning mechanism and the pressing conveying mechanism and is used for controlling the operation of each electrical connecting part to clean the tray.

Further, the tray conveying mechanism includes: the device comprises a carrier roller, a conveying bracket, a conveying motor and a conveying chain;

the carrier roller is mounted at the top of the conveying support to form a conveying channel, and a carrier roller scraper is mounted at the bottom of the carrier roller;

installing baffles at the inlet of the conveying bracket and the outlet of the conveying bracket;

the conveying motor is arranged on the conveying support through a conveying motor support, is electrically connected with the controller and is positioned at the bottom of the carrier roller, and a conveying driving chain wheel is arranged on the conveying motor;

the conveying chain is arranged on one side of the carrier roller and connected with the conveying driving chain wheel, a chain cover plate is arranged above the conveying chain, and a guide plate is arranged on the other side of the carrier roller.

Further, the tray pick and place mechanism includes: the tray conveying mechanism comprises a tray overturning mechanism and a tray lifting mechanism, wherein the tray lifting mechanism is arranged on one side of the tray conveying mechanism, and the tray overturning mechanism is arranged at the top end of the tray lifting mechanism.

Further, the tray overturning mechanism includes: the vacuum chuck comprises a chuck mounting plate, a turnover arm, a turnover motor, a vacuum chuck and a vacuum generator;

the sucker mounting plate is mounted at the free end of the turnover arm, and the turnover arm is rotatably mounted at the top end of the tray lifting mechanism through a turnover shaft;

the overturning motor is connected with the overturning shaft and used for driving the overturning shaft to drive the sucker mounting plate to overturn through the overturning arm;

the vacuum sucker is arranged on the sucker mounting plate, and the vacuum generator is arranged on the turnover arm through a vacuum device mounting frame and is communicated with the vacuum sucker through an air pipe;

the turnover motor and the vacuum generator are electrically connected with the controller.

Further, the tray overturning mechanism further comprises: the bottom of the overturning mounting plate is fixed with the tray lifting mechanism, and the overturning arm is rotatably mounted on the overturning mounting plate through an overturning shaft;

a bearing seat plate is arranged on one side of the turnover shaft, a coupler is arranged on the other side of the turnover shaft, a turnover motor mounting plate is arranged on the coupler, and the turnover motor is arranged on the turnover motor mounting plate;

The overturning mounting plate is provided with a limiting plate, and the overturning arm is rotatably connected with the limiting plate through an overturning shaft.

Further, the tray lift mechanism includes: the lifting mechanism comprises a driving mounting plate, a lifting drive, a guide rod and a linear bearing;

the driving mounting plate is fixed on the tray conveying mechanism;

the lifting drive is fixed in the center of the drive mounting plate and is electrically connected with the controller, a telescopic rod is arranged on the lifting drive, the telescopic rod penetrates through the drive mounting plate and is connected with the tray turnover mechanism, and the lifting drive drives the telescopic rod to drive the tray turnover mechanism to lift;

the linear bearing is provided with two guide rods which are respectively arranged at two ends of the driving mounting plate, and the two guide rods penetrate through the linear bearing and are connected with the tray turnover mechanism.

Further, the cleaning mechanism includes: the cleaning roller, the cleaning motor mounting plate, the cleaning motor and the cleaning chain wheel;

the cleaning roller is arranged in the middle of the tray conveying mechanism through a bearing seat;

the cleaning motor mounting plate is fixed at the bottom of the tray conveying mechanism;

the cleaning motor is arranged on the cleaning motor mounting plate through a cleaning motor bracket and is electrically connected with the controller, and a cleaning driving chain wheel is arranged at one end of the cleaning motor;

The cleaning chain wheel is arranged at one end of the cleaning roller and is connected with the cleaning driving chain wheel through a cleaning chain.

Further, the pressing conveying mechanism includes: the device comprises a frame, a roller, a compaction motor bracket and a compaction motor;

the frame is provided with two brackets which are respectively fixed on two sides of the top of the tray conveying mechanism and positioned above the cleaning mechanism;

the two ends of the roller are arranged on the frame through roller bearing seats;

the pressing motor support is erected on the frame and located above the roller, the pressing motor is arranged on the pressing motor support and electrically connected with the controller, a pressing driving chain wheel is arranged at one end of the pressing motor, and the pressing driving chain wheel is connected with the roller through a pressing chain.

Further, the frame includes: the guide post, the cross beam, the guide post bearing and the pressing plate;

the bottom of the guide post is fixed on the tray conveying mechanism through the guide post mounting seat;

two ends of the cross beam are fixed with the guide pillar bearing bracket;

the guide post bearing is sleeved outside the guide post, and the bottom of the guide post bearing is fixed on the top of the guide post bearing bracket;

the pressing plate is fixed to the top of the guide pillar, and the top of the guide pillar bearing is connected with the pressing plate through a spring.

Further, still include: a dust cover and a dust collection cover;

the dust cover is arranged at the top of the inlet end of the tray conveying mechanism, an opening is formed in the dust cover, a brush strip is arranged on the opening, a dust-proof suction port is formed in the side face of the dust cover, and the dust-proof suction port is communicated with a dust removal system;

the dust collecting cover is arranged at the bottom of the inlet end of the tray conveying mechanism, a dust collecting suction port is arranged on one side of the dust collecting cover and communicated with a dust removing system, and a cleaning port is arranged on the other side of the dust collecting cover.

The tray cleaning device provided by the embodiment of the invention has the following beneficial effects:

according to the technical scheme, after the controller receives a tray placing command, the tray taking and placing mechanism is controlled to place the tray at the inlet end of the tray conveying mechanism, after the tray conveying mechanism is controlled to convey the tray onto the cleaning mechanism, the pressing conveying mechanism and the cleaning mechanism are started to operate simultaneously, the pressing conveying mechanism presses the tray and the cleaning mechanism tightly, the tray is enabled to be attached to the cleaning mechanism more closely, the tray is enabled to be cleaner, after cleaning is finished, the tray is conveyed to the outlet end through the tray conveying mechanism continuously, and the tray taking and placing mechanism is started by the controller to take the cleaned tray from the tray conveying mechanism and place the cleaned tray in the tray placing box. Therefore, the process of automatically cleaning the tray is completed, the whole process does not need manual participation, the cleaning effect is guaranteed, human resources are saved, and the cleaning speed of the tray is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

The invention will be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of a tray cleaning apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a tray conveying mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic view of a portion of a tray conveying mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a tray pick and place mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the operation of the tray pick and place mechanism according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a cleaning mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a pressing and conveying mechanism in an embodiment of the invention.

Description of reference numerals: 1, a tray conveying mechanism, 11 carrier rollers, 12 conveying supports, 13 conveying motors, 131 conveying motor supports, 14 conveying chains, 141 chain cover plates, 15 carrier roller scrapers, 16 baffles, 17 conveying driving sprockets and 18 guide plates;

2, a tray taking and placing mechanism, 21 a tray turning mechanism, 211 a sucker mounting plate, 212 a turning arm, 2121 a turning shaft, 213 a turning motor, 2131 a turning motor mounting plate, 214 a vacuum sucker, 215 a vacuum generator, 2151 a vacuum device mounting frame, 216 a turning mounting plate, 2161 a limiting plate, 217 a bearing seat plate and 218 a coupler;

22 tray lifting mechanism, 221 driving mounting plate, 222 lifting driving, 223 guide rod and 224 linear bearing;

3, cleaning mechanisms, 31 cleaning rollers, 32 cleaning motor mounting plates, 33 cleaning motors, 34 cleaning motor supports, 35 cleaning chain wheels, 36 bearing seats, 37 cleaning driving chain wheels and 38 cleaning chains;

4, pressing and conveying mechanisms, 41 frames, 411 guide columns, 412 cross beams, 413 guide column bearings, 414 pressing plates, 415 guide column mounting seats, 416 guide column bearing supports, 417 springs, 42 rollers, 43 pressing motor supports, 44 pressing motors, 45 roller bearing seats, 46 pressing driving chain wheels and 47 pressing chains;

5, a controller;

6 dust cover, 61 brush strip, 62 dust-proof suction port;

7 dust collecting cover, 71 dust collecting suction port.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, a tray cleaning apparatus includes: the device comprises a tray conveying mechanism 1, a tray taking and placing mechanism 2, a cleaning mechanism 3, a pressing conveying mechanism 4 and a controller 5; the tray conveying mechanism 1 is provided with an inlet end and an outlet end and is used for conveying the tray from the inlet end to the outlet end; the tray taking and placing mechanism 2 is provided with two trays which are respectively arranged at the inlet end and the outlet end of the tray conveying mechanism 1 and used for placing the trays at the inlet end or taking the trays away from the outlet end; the cleaning mechanism 3 is arranged in the middle of the tray conveying mechanism 1 and used for cleaning the tray; the pressing conveying mechanism 4 is arranged on the tray conveying mechanism 1, is positioned above the cleaning mechanism 3 and is used for pressing the tray on the cleaning mechanism 3; the controller 5 is electrically connected with the tray conveying mechanism 1, the tray taking and placing mechanism 2, the cleaning mechanism 3 and the pressing conveying mechanism 4 and is used for controlling the operation of each electric connecting part to clean the tray.

In the scheme, the tray contains materials such as coal materials, stone materials and grains which can remain residues on the tray. Connecting wires of the tray conveying mechanism 1, the tray taking and placing mechanism 2, the cleaning mechanism 3 and the pressing conveying mechanism 4 are concentrated at the bottom of the tray conveying mechanism 1, sleeved with insulating materials and then electrically connected with a controller 5. The controller 5 is a PLC controller, and the connection wires of the mechanisms are connected to the ports of the PLC controller, so that the PLC controller can control the operation of the mechanisms.

The specific control process is as follows:

after controller 5 received the tray and placed the order, control tray pick and place mechanism 2 and place the tray at tray conveying mechanism 1's entry end, control tray conveying mechanism 1 after carrying the tray on clearance mechanism 3, start simultaneously and compress tightly conveying mechanism 4 and clearance mechanism 3 operation, compress tightly conveying mechanism 4 and compress tightly the tray with clearance mechanism 3, make the tray paste more and lean on clearance mechanism 3, guarantee that the tray is clear cleaner, continue to carry to the exit end through tray conveying mechanism 1 again after the clearance is accomplished, controller 5 starts tray pick and place mechanism 2 and take off the tray after the clearance from tray conveying mechanism 1 and place in the tray is placed the case.

Through the scheme, the process of automatically cleaning the tray can be completed, the whole process does not need manual participation, the cleaning effect is guaranteed, human resources are saved, and the cleaning speed of the tray is improved.

In the specific embodiment, as shown in fig. 2 and 3, the tray conveying mechanism 1 includes: the device comprises a carrier roller 11, a conveying bracket 12, a conveying motor 13 and a conveying chain 14; the carrier roller 11 is arranged at the top of the conveying bracket 12, and the carrier roller scraper 15 is arranged at the bottom of the carrier roller 11; installing baffles 16 at the inlet of the conveying bracket 12 and the outlet of the conveying bracket 12; the conveying motor 13 is arranged on the conveying support 12 through a conveying motor support 131, is electrically connected with the controller 5 and is positioned at the bottom of the carrier roller 11, and a conveying driving chain wheel 17 is arranged on the conveying motor 13; the conveying chain 14 is arranged on one side of the carrier roller 11 and connected with the conveying driving chain wheel 17, a chain cover plate 141 is arranged above the conveying chain 14, and a guide plate 18 is arranged on the other side of the carrier roller 11.

In above-mentioned scheme, the top of conveying bracket 12 is equipped with two crossbeams, and bearing roller 11 sets up between two crossbeams to at 11 bottom installation bearing roller scraper blades 15 of bearing roller for scrape the material powder that bonds on the bearing roller 11, prevent to accumulate gradually through long-term operation material powder and lead to bearing roller 11 to become thick, make the height on bearing roller 11 surface highly uprise, influence the steady transportation of tray. Baffles 16 are provided at the inlet and outlet of the conveyor stand 12, the baffles 16 being at a height above the surface of the idler 11 to prevent the pallet from falling out. The end of one side of the carrier roller 11 is provided with double-row chain wheels, the conveying chain 14 is connected with each double-row chain wheel in sequence and then is finally connected with the conveying driving chain wheel 17, and in order to prevent material powder from falling into the conveying chain 14, a chain cover plate 141 is arranged above the conveying chain 14. A guide plate 18 mounted on the other side of the idler 11 serves to guide the roll of the idler 11 in direction.

The working process of the tray conveying mechanism 1 is as follows: the controller 5 controls the conveying motor 13 to start, drives the conveying driving chain wheel 17 to rotate, the conveying driving chain wheel 17 drives the conveying chain 14 to move, the conveying chain 14 drives the double-row chain wheel at the end of the carrier roller 11 to rotate, the carrier roller 11 further rotates, and under the rotating action of the carrier roller 11, the tray is conveyed from the inlet of the conveying support 12 to the outlet of the conveying support 12 after being cleaned by the cleaning mechanism 3. And under the action of the baffle 16, the tray stays at the outlet of the conveying bracket 12 to wait for the tray taking and placing mechanism 2 to take the tray and place the tray in the corresponding storage box.

Through above-mentioned scheme, can guarantee the normal transportation process of tray in the clearance process, need not artifical the participation.

In a specific embodiment, as shown in fig. 4 and 5, the tray pick and place mechanism 2 includes: a tray turnover mechanism 21 and a tray lifting mechanism 22, wherein the tray lifting mechanism 22 is arranged at one side of the tray conveying mechanism 1, and the tray turnover mechanism 21 is arranged at the top end of the tray lifting mechanism 22.

In the above solution, the tray lifting mechanism 22 needs to be adjusted to a proper height to pick and place the tray, and the tray turning mechanism 21 is arranged at the top of the tray lifting mechanism 22 to turn the tray.

The method specifically comprises the following steps: when the tray reaches the inlet end of the tray conveying mechanism 1, the controller 5 controls the tray lifting mechanism 22 arranged at the inlet end of the tray conveying mechanism 1 to lift to the placing height of the tray, the tray overturning mechanism 21 is started to suck the tray, the tray lifting mechanism 22 is controlled to lift to the corresponding height of the tray conveying mechanism 1, the tray overturning mechanism 21 overturns the tray to enable the tray opening to be placed downwards on the tray conveying mechanism 1, and the tray conveying mechanism 1 conveys the tray and the cleaning mechanism 3 cleans the tray. Then, a tray overturning mechanism 21 and a tray lifting mechanism 22 which are arranged at the outlet end of the tray conveying mechanism 1 are started to cooperate to overturn the tray, so that the opening of the tray faces upwards and is placed in the tray storage box.

In the specific embodiment, the tray turnover mechanism 21 includes: a suction cup mounting plate 211, a flipping arm 212, a flipping motor 213, a vacuum suction cup 214, and a vacuum generator 215; the sucker mounting plate 211 is arranged at the free end of the turning arm 212, and the turning arm 212 is rotatably arranged at the top end of the tray lifting mechanism 22 through a turning shaft 2121; the overturning motor 213 is connected with the overturning shaft 2121 and is used for driving the overturning shaft 2121 to drive the sucking disc mounting plate 211 to overturn through the overturning arm 212; the vacuum chuck 214 is arranged on the chuck mounting plate 211, the vacuum generator 215 is arranged on the turnover arm 212 through a vacuum mounting bracket 2151 and is communicated with the vacuum chuck 214 through an air pipe; the flipping motor 213 and the vacuum generator 215 are electrically connected to the controller 5.

In the above-described aspect, the number of the vacuum chucks 214 may be one or more, preferably 4, and the vacuum chucks are respectively disposed at four corners of the chuck mounting plate 211.

The process of taking and placing the tray by the tray turnover mechanism 21 is as follows:

first, after the controller 5 controls the tray lifting mechanism 22 to adjust to the corresponding height for placing the tray (wherein, at the inlet end, the height of the box for placing the tray is adjusted, and at the outlet end, the height of the tray conveying mechanism 1 is adjusted), the turning motor 213 is controlled to operate to drive the turning arm 212 to align the vacuum chuck 214 on the chuck mounting plate 211 with the tray through the turning shaft 2121.

Then, the controller 5 controls the vacuum generator 215 to be activated, and the vacuum chuck 214 is evacuated through the air pipe, so that the vacuum chuck 214 holds the tray.

Then, after the tray lifting mechanism 22 with the tray turning structure sucking the tray is lifted to the tray placing height (wherein, at the inlet end, the height is adjusted to the height of the tray conveying mechanism 1, and at the outlet end, the height is adjusted to the tray placing height corresponding to the storage box), the turning motor 213 is started to operate to drive the turning arm 212 to turn the tray downward through the turning shaft 2121, and the tray is placed on the tray conveying mechanism 1.

Finally, the controller 5 controls the vacuum generator 215 to blow air to the vacuum chuck 214 through the air tube so that the tray is released from the vacuum chuck 214.

Through the scheme, manual operation is not needed, and the process of taking and placing the tray can be conveniently and quickly completed automatically.

In a specific embodiment, the tray overturning mechanism 21 further includes: the bottom of the turnover mounting plate 216 is fixed with the tray lifting mechanism 22, and the turnover arm 212 is rotatably mounted on the turnover mounting plate 216 through a turnover shaft 2121; a bearing seat plate 217 is arranged on one side of the overturning shaft 2121, a coupler 218 is arranged on the other side of the overturning shaft 2121, an overturning motor mounting plate 2131 is arranged on the coupler 218, and an overturning motor 213 is arranged on the overturning motor mounting plate 2131; a limiting plate 2161 is arranged on the turnover mounting plate 216, and the turnover arm 212 is rotatably connected with the limiting plate 2161 through a turnover shaft 2121.

In the above scheme, the bearing seat plate 217 and the two sides of the turnover motor mounting plate 2131 are connected to the turnover mounting plate 216 through rib plates, so that the stability of the whole mechanism in the turnover action is ensured. The function of the mounting limit plate 2161 is to ensure that the bottom surface of the tray is vertically upwards taken as the starting point of tray turning and the bottom surface of the tray is downwards attached to the carrier roller 11 of the conveyor as the terminal point.

Through the scheme, the tray overturning mechanism 21 can work more stably.

In a particular embodiment, the tray lift mechanism 22 includes: a driving mounting plate 221, a lifting driver 222, a guide rod 223 and a linear bearing 224; the driving mounting plate 221 is fixed on the tray conveying mechanism 1; the lifting drive 222 is fixed at the center of the drive mounting plate 221 and is electrically connected with the controller 5, a telescopic rod is arranged on the lifting drive, the telescopic rod penetrates through the drive mounting plate 221 and is connected with the tray overturning mechanism 21, and the lifting drive 222 drives the tray overturning mechanism 21 to lift through driving the telescopic rod; the linear bearings 224 are provided at both ends of the driving mounting plate 221, and the guide rods 223 are provided with two connecting rods passing through the linear bearings 224 and connected to the tray-overturning mechanism 21.

In the above-described aspect, the lifting drive 222 is preferably an air cylinder.

The ascending process of the tray lifting mechanism 22 is: controller 5 controller control lift drive 222 moves, and the telescopic link stretches out and drives tray tilting mechanism 21 and rise, and the guide arm 223 of both sides rises along with tray tilting mechanism 21 under the drive of telescopic link simultaneously, and after rising to corresponding height, controller 5 control lift drive 222 stall.

The descending process is as follows: controller 5 controls lift drive 222 operation, and the telescopic link withdrawal drives tray tilting mechanism 21 and descends, and the guide arm 223 of both sides descends along with tray tilting mechanism 21 together under the drive of telescopic link simultaneously, when descending to corresponding high back, controller 5 control lift drive 222 stop the operation.

The guide rods 223 are used for ensuring the stability of the tray turnover mechanism 21 in the ascending and descending processes, and the shaking condition can not occur.

In a particular embodiment, as shown in fig. 6, the cleaning mechanism 3 comprises: a cleaning roller 31, a cleaning motor mounting plate 32, a cleaning motor 33 and a cleaning chain wheel 35; the cleaning roller 31 is arranged in the middle of the tray conveying mechanism 1 through a bearing seat 36; the cleaning motor mounting plate 32 is fixed at the bottom of the tray conveying mechanism 1; the cleaning motor 33 is arranged on the cleaning motor mounting plate 32 through a cleaning motor bracket 34 and is electrically connected with the controller 5, and one end of the cleaning motor 33 is provided with a cleaning driving chain wheel 37; the cleaning sprocket 35 is disposed at one end of the cleaning roller 31, and the cleaning sprocket 35 is connected to the cleaning driving sprocket 37 via a cleaning chain 38.

In above-mentioned scheme, the brush roller is preferably adopted to cleaning roller 31 to carry out the clearance in-process, the rotation direction of brush roller and the opposite direction that the tray carried, so that can carry out better clearance to the tray, and the number of teeth of the clearance sprocket 35 of every brush roller one end is all inequality, guarantees that the brush roller moves with different rotational speeds under the drive of clearance chain 38, carries out crisscross no dead angle clearance to the tray. The cleaning motor 33 is a speed-adjustable motor, and the controller 5 can adjust the running speed of the speed-adjustable motor according to actual needs, so as to adjust the rotating speed of the cleaning roller 31.

The specific cleaning process is as follows: controller 5 control clearance motor 33 starts, drive clearance drive sprocket 37 and rotate, clearance drive sprocket 37 drives clearance sprocket 35 through clearance chain 38 and rotates, clearance sprocket 35 drives clearance roller 31 and rotates, clearance roller 31 pivoted direction is opposite with tray direction of delivery, the tray is after the process on clearance roller 31 like this, the residue in the tray will be cleaned away to the brush on the clearance roller 31, and then the automatic cleaning process to the tray of accomplishing.

In a specific embodiment, as shown in fig. 7, the pressing and conveying mechanism 4 includes: a frame 41, a roller 42, a pressing motor bracket 43 and a pressing motor 44; the frame 41 is provided with two brackets which are respectively fixed on the two sides of the top of the tray conveying mechanism 1 and positioned above the cleaning mechanism 3; the two ends of the roller 42 are mounted on the frame 41 through roller bearing seats 4536; the pressing motor bracket 43 is erected on the frame 41 and located above the roller 42, the pressing motor 44 is arranged on the pressing motor bracket 43 and electrically connected with the controller 5, one end of the pressing motor 44 is provided with a pressing driving chain wheel 46, and the pressing driving chain wheel 46 is connected with the roller 42 through a pressing chain 47.

In the above scheme, when the tray is conveyed to the lower part of the frame 41, the tray is pressed under the gravity action of the pressing and conveying mechanism 4, so that the tray can be tightly attached to the cleaning mechanism 3 in the cleaning process. The controller 5 controls the pressing motor 44 to start, and drives the pressing driving sprocket 46 to rotate, and the pressing driving sprocket 46 drives the roller 42 sprocket arranged at the end of the roller 42 to rotate through the pressing chain 47, so as to drive the roller 42 to rotate. The rotation direction of the roller 42 is opposite to that of the tray roller on the tray conveying mechanism 1, and the tray is assisted to be conveyed forwards through a certain degree of friction force, so that the tray is prevented from retreating or tilting.

Wherein cylinder 42 is the rubber coating cylinder, and the outer lane sets up the elastomer, can increase cylinder 42's frictional force like this for the tray can better forward motion, can also reduce the wearing and tearing of tray surface in the clearance process simultaneously.

Through above-mentioned scheme, can clear up the in-process at clearance mechanism 3 to the tray, compress tightly the messenger tray and can hug closely clearance mechanism 3 to the tray, prevent the tray perk, simultaneously, can also assist the tray and move forward, prevent that the condition that the tray from appearing backing off when clearance mechanism 3 clears up in the opposite direction.

In a particular embodiment, the frame 41 comprises: a cross beam 412, a guide column 411, a guide column bearing 413 and a pressing plate 414; two ends of the beam 412 are arranged on the guide column 411 in a lifting way through a guide column bearing bracket 416; the bottom of the guide column 411 is fixed on the tray conveying mechanism 1 through a guide column mounting seat 415; the guide post bearing 413 is sleeved outside the guide post 411, and the bottom of the guide post bearing 413 sleeve is fixed at the top of the guide post bearing bracket 416; the pressing plate 414 is fixed on the top of the guide column 411, and the top of the guide column bearing 413 is connected with the pressing plate 414 through a spring 417.

In the above solution, the guide pillar bearing 413 is a linear bearing, and the linear bearing is fixed with the cross beam 412 through a bearing bracket. The height of the pallet is typically slightly greater than the height of the rollers 42 on the cross member 412 after the pallet has been moved to the bottom of the frame 41. Thus, the tray is pressed downwards by the rollers 42 on the beam 412 after moving to the bottom of the frame 41, and an upward force is applied to the beam 412, so that the beam 412 carrying the guide post bearing 413 can be jacked up. Roller 42 on crossbeam 412 has a decurrent extrusion force to the tray simultaneously under the spring action of spring 417 for the tray can also be compressed tightly when guaranteeing to pass through hold-down mechanism smoothly, makes tray and clearance mechanism 3 paste more tightly, and the clearance effect is better.

In a specific embodiment, the method further comprises: a dust cover 6 and a dust collection cover 7; the dust cover 6 is arranged at the top of the inlet end of the tray conveying mechanism 1, an opening is arranged on the dust cover 6, a brush strip 61 is arranged on the opening, a dust-proof suction port 62 is arranged on the side surface of the dust cover 6, and the dust-proof suction port 62 is communicated with a dust removal system; the dust collecting cover 7 is arranged at the bottom of the inlet end of the tray conveying mechanism 1, one side of the dust collecting cover 7 is provided with a dust collecting suction port 71, the dust collecting suction port 71 is communicated with a dust removing system, and the other side of the dust collecting cover 7 is provided with a cleaning port.

In above-mentioned scheme, the open end of dust cover 6 sets up brush strip 61, and when the tray was put into the bearing roller 11 of dust cover 6 below from the opening by the upset like this, the material remained and can drop and slide along the bearing roller 11 clearance from the tray, and when the tray reseed, brush strip 61 resets under the elastic action, prevents that the material residue from dropping outside dust cover 6. In addition, dust can be produced in the process of placing the tray, so that the dust removal system can exhaust the dust cover 6, and the dust in the dust cover 6 enters the dust removal system through the dust-proof suction port 62 under the negative pressure effect to be subjected to dust removal treatment.

The dust hood 7 is arranged at the bottom of the tray conveying mechanism 1 and used for collecting material residues falling down from the tray through the gap of the carrier roller 11, and dust is generated in the falling process, so that the dust hood 7 needs to be pumped by a dust removal system, and the dust in the dust hood 7 enters the dust removal system through the dust collection suction port 71 under the negative pressure effect to be subjected to dust removal treatment. The other side of the dust hood 7 is provided with a cleaning opening, and when a certain amount of dust in the dust hood 7 is accumulated, the dust in the dust hood 7 needs to be cleaned out through the cleaning opening.

Through the above-mentioned scheme of this embodiment, can accomplish the automatic process of clearing up of tray, whole process need not artifical the participation, when guaranteeing the clearance effect, has saved manpower resources, has improved the clean rate of tray.

A tray cleaning apparatus according to another embodiment of the present application, as shown in fig. 1 to 7, includes:

firstly, a tray conveying mechanism:

1. the tray conveying mechanism is composed of a support (namely, a conveying support 12), a carrier roller 11, a chain, a carrier roller scraper 15, a speed reducing motor (namely, a conveying motor 13), a motor support (namely, a conveying motor support 131), a driving chain wheel, a guide plate 18, a baffle 16, a chain cover plate 141 and the like, and is mainly used for conveying trays.

2. The carrier rollers 11 are mounted on the conveying support 12, double rows of chain wheels are arranged at the ends of the carrier rollers 11, a chain is sequentially connected with the chain wheels of each carrier roller 11 and finally connected to the driving chain wheel at the terminal of the speed reducing motor, the carrier rollers 11 are driven to rotate through the speed reducing motor, and a tray above the carrier rollers 11 is conveyed in a certain direction.

3. A guide plate 18 is arranged on one side above the carrier roller 11, and a chain cover plate 141 is arranged on the other side, and is mainly used for guiding the tray in the conveying process. Meanwhile, the chain cover plate 141 can play a role in protection, and coal dust is prevented from falling into parts such as a chain, a chain wheel and the like to cause abrasion.

4. The carrier roller scraper 15 is installed below the carrier roller 11 and used for dropping the coal powder adhered to the carrier roller 11, so that the problem that the stable conveying process of the tray is influenced by the surface height change of the carrier roller 11 due to the gradual accumulation of the coal powder in the long-term operation process is avoided.

5. The baffle 16 is installed at the both ends of tray conveying mechanism, prevents that the tray from breaking away from tray conveying mechanism.

Second, cleaning mechanism

1. The cleaning mechanism mainly comprises structures such as a brush roller (namely, a cleaning roller 31), a bearing seat 36, a chain wheel (namely, a cleaning chain wheel 35), a chain (namely, a cleaning chain 38), a speed regulating motor (namely, a cleaning motor 33), a motor support (namely, a cleaning motor support 34), a driving chain wheel (namely, a cleaning driving chain wheel 37), a motor mounting plate (cleaning motor mounting plate 32) and the like, and is mainly used for cleaning the tray.

2. Cleaning mechanism installs in tray conveying mechanism middle section, and the brush roller passes tray conveying mechanism's conveying support 12 and passes through bearing frame 36 fixed mounting on conveying support 12, the double sprocket of one end installation, every sprocket is connected gradually to the chain, finally is connected to the drive sprocket of buncher end, rotate through buncher drive brush roller, be provided with a plurality of brush strips 61 that are the spiral distribution on the brush roller, brush roller direction of rotation is opposite with tray direction of delivery, in the tray is the transportation process forward, to the inside clearance of tray.

3. The chain wheel tooth number of each brush roller end is different, and the chain drives the lower rotation speed operation with the difference respectively, forms crisscross clearance structure, carries out the clearance at no dead angle to tray inside.

Thirdly, pressing the conveying mechanism:

1. the pinch conveyor mechanism is comprised of a cross beam 412, a rubber covered drum, a bearing housing 36 (i.e., a drum bearing housing 4536), a chain (i.e., a pinch chain 47), a speed regulating motor (i.e., a pinch motor 44), a drive sprocket (i.e., a pinch drive sprocket 46), a motor bracket (i.e., a pinch motor bracket 43), a bearing bracket (i.e., a guide post bearing bracket 416), a linear bearing 224 (i.e., a guide post bearing 413), a guide post 411 mounting plate (i.e., a guide post mounting housing 415), a spring 417, a pressure plate 414, and the like.

2. Hold down conveying mechanism and install in tray conveying mechanism top, and just to clearance mechanism, the main role is to play the effect of compressing tightly to the tray in the tray clearance process for the tray hugs closely bearing roller 11 at brush clearance in-process, and supplementary tray moves forward, prevents that the tray from retreating or perk.

3. The two ends of the rubber coating roller are fixedly mounted on the conveying support 12 of the tray conveying mechanism through the bearing seats 36, the chain wheels are mounted at one ends of the rubber coating roller and are sequentially connected through chains, the rubber coating roller is finally connected onto the driving chain wheel at the terminal of the speed regulating motor and is driven to rotate through the speed regulating motor, the rotating direction of the rubber coating roller is opposite to the rotating direction of the carrier roller 11, the outer circle of the rubber coating roller is an elastic body, the tray is pushed to convey forwards through friction force to a certain degree, and meanwhile the bottom surface of the.

4. One end of the guide column 411 is mounted on a guide column mounting plate, the other end of the guide column penetrates through a spring 417, a linear bearing, a spring 417 and a pressing plate 414 in sequence, the guide column mounting plate is mounted on a conveying support 12 of the tray conveying mechanism, and the linear bearing is mounted on a bearing support mounted at four corners of the conveying support 12. Due to the height deviation of the tray, the tray is ensured to be assisted to enter the cleaning mechanism by a certain pressing force under the adjusting action of the spring 417. The pressing and conveying mechanism can move up and down through the relative sliding of the linear bearing 224 and the guide pillar 411, and the trays with different heights can smoothly enter the cleaning mechanism for cleaning.

Fourthly, the tray overturning mechanism: two sets of the conveying devices are respectively arranged at two ends of the tray conveying mechanism.

1. The tray turnover mechanism mainly comprises a sucker mounting plate 211, a turnover arm 212, a generator mounting frame (namely, a vacuum device mounting frame 2151), a vacuum generator 215, a vacuum sucker 214, a five-way joint, an air pipe, a turnover shaft 2121, a limiting plate 2161, a motor mounting plate (namely, a turnover motor mounting plate 2131), a bearing seat 36 plate 217, a bearing, a coupler 218, a turnover mechanism mounting plate (namely, a turnover mounting plate 216), a rib plate, a turnover motor 213 and the like.

2. Vacuum chuck 214 is installed respectively in sucking disc mounting panel 211 four corners, and the sucking disc top is connected to vacuum generator 215 through trachea, five-way joint, and vacuum generator 215 installs on the generator mounting bracket of upset arm 212 one end, snatchs the tray under the negative pressure adsorption.

3. The other end of the turning arm 212 is provided with a turning shaft 2121, one end of the turning shaft 2121 is provided with a bearing and is fixed on the turning mechanism mounting plate through a bearing seat 36 plate 217, the other end of the turning arm is connected with a turning motor 213 through a coupler 218 and is fixed on the turning mechanism mounting plate through a motor mounting plate, and the turning arm 212 is driven by a motor to rotate so as to realize the turning action of the tray.

4. A limiting plate 2161 is arranged below the turnover arm 212 and fixed on the turnover mechanism mounting plate, so that the bottom surface of the tray is ensured to vertically and upwards serve as a starting point for turning the tray, and the bottom surface of the tray downwards clings to the carrier roller 11 of the conveyor as a terminal point.

5. The bearing mounting plate and the two sides of the motor mounting plate are connected to the turnover mechanism mounting plate through rib plates, and the stability of the whole mechanism in the turnover action is guaranteed.

Fifthly, a tray lifting mechanism: two sets of the conveying devices are respectively arranged at two ends of the tray conveying mechanism.

1. The tray lifting mechanism mainly comprises a guide rod 223, a linear bearing 224, a cylinder (i.e., a lifting drive 222), a cylinder mounting plate (i.e., a drive mounting plate 221), and the like.

2. The tray lifting mechanism is fixed on the tray conveying mechanism cross beam 412 through the cylinder mounting plate.

3. The cylinder is fixed on the cylinder mounting panel with linear bearing 224, and the cylinder end is connected to the tilting mechanism mounting panel, and guide arm 223 is installed respectively to both sides, realizes driving tilting mechanism's lift under linear bearing 224's auxiliary action when the cylinder is flexible.

Sixthly, a dustproof cover: install at tray conveying mechanism initiating terminal, the entrance side sets up the opening, and the opening both sides are pasted and are had brush strip 61, realize that the buggy is smooth from the landing in bearing roller 11 clearance when the tray upset gets into, and the brush resets under the elastic action when the tray resets, prevents that the buggy from dropping outside the dust cover. The dust cover on the same side is provided with a dust suction opening (namely, a dust suction opening 62), and under the action of negative pressure, the dust generated by the coal dust during the turnover and dumping of the tray is adsorbed to a dust removal system. The dust cover export is provided with brush strip 61, prevents that the buggy raise dust from passing through.

Seventhly, a dust collecting groove: install in tray conveying mechanism below, the main effect is the buggy of collecting in the material process is expected in the tray upset and the tray clearance in-process, and one side is provided with the dust absorption mouth (promptly, collection dirt suction inlet 71), and under the negative pressure effect, the buggy raise dust when expecting or when clearing up the tray upset adsorbs to dust pelletizing system, and the opposite side is provided with the mouth that cleans, makes things convenient for the clearance of later stage dust.

Based on the tray cleaning device, the execution process is as follows:

firstly, after the coal full water test is finished, the tray is required to be cleaned as an initial state, a turnover motor 213 fixed on a motor mounting plate acts in an inlet end tray turnover mechanism of a tray conveying mechanism, a turnover shaft 2121 is driven to rotate through a coupler 218, and a turnover arm 212 is driven to turn over at the same time, so that a vacuum sucker 214 mounted on a sucker mounting plate 211 is turned over to the end position of a limiting plate 2161, and the direction is upward;

After the tray is turned in place, a cylinder fixed on a cylinder mounting plate in the tray lifting mechanism extends out, and in the extending process, a guide rod 223 mounted below the turning mechanism mounting plate assists the cylinder to vertically move the tray turning mechanism upwards to the highest position under the action of a bearing;

thirdly, the tray is placed above the vacuum chuck 214 under the action of relevant mechanisms of the workstation, a vacuum generator 215 arranged on a generator mounting frame in the tray overturning mechanism acts to generate negative pressure suction, and then the tray is adsorbed by the vacuum chuck 214;

and fourthly, after the adsorption is finished, the air cylinder of the tray lifting mechanism returns to drive the tray turnover mechanism to vertically move downwards to the lowest position, then the turnover motor 213 moves, the turnover arm 212 drives the vacuum chuck 214 to rotate, so that the tray slowly enters the dust cover, and the brush strip 61 at the opening of the dust cover opens along with the turnover arm 212 and then closes.

When the tray enters the dust cover, the pulverized coal falls into the dust collection cover along the gap of the carrier roller 11 of the tray conveyor and is accompanied with dust raising, and at the moment, the dust collection cover is connected to an external dust collection system through a dust collection port on the side wall of the dust cover and a dust collection port on the side wall of the dust collection cover 7 to work so as to absorb the dust raising.

Sixthly, when the overturning arm 212 rotates to the initial position of the limiting plate 2161, the speed reduction motor of the tray conveying mechanism starts to work, the driving chain wheel drives the carrier roller 11 to start to rotate under the action of the chain, meanwhile, the carrier roller scraper 15 scrapes the pulverized coal on the surface of the carrier roller 11 into the dust collection cover, then the vacuum generator 215 stops working, the vacuum sucker 214 loses the action, and the tray falls onto the carrier roller 11 of the tray conveyor. Then the tray reversing mechanism 21 returns to the initial state to wait for the next tray.

The tray moves forwards along with the rotation of the carrier roller 11 and is simultaneously acted by the guide plate 18 and the chain cover plate 141, so that the tray cannot deviate when moving;

after the tray conveying mechanism starts to act, a speed regulating motor is started, the rubber coating roller is driven to rotate through a chain wheel, the speed regulating motor is started at the same time, a brush roller is driven to rotate through the chain wheel, and the rotating direction of the brush roller is opposite to that of the carrier roller 11;

ninthly, when the tray moves forwards, the tray firstly enters a working area of the pressing conveying mechanism, and because the tray has certain height deviation, in order to guarantee the smooth entering of the cleaning section, the height of the lower edge of the rubber coating roller is lower than that of the tray, and along with the rotation of the rubber coating roller, the tray drives the whole pressing conveying mechanism to move upwards under the assistance of the guide rod 223 and the bearing when entering and jacking, and the pressing spring 417.

Well brush roller is under the frictional force and the spring 417 effect of rubber coating cylinder excircle, form the butt clamp effect with bearing roller 11, it moves along with conveying mechanism to compress tightly the tray, speed governing motor drives sprocket drive brush roller reverse rotation simultaneously, be provided with a plurality of brush strips 61 that are the spiral and distribute on the brush roller, and the sprocket number of teeth of every brush roller end is all inequality, operate with different rotational speeds respectively, form the clearance effect that interlocks each other, in the tray in the transport process forward, carry out no dead angle clearance to the inside buggy of tray, collect the raise dust through the dust absorption mouth of dust cage lateral wall.

Under the initial state, the tray tilting mechanism of tray conveying mechanism's exit end installation, vacuum chuck 214 overturns to limiting plate 2161 termination position, and the direction is upwards, when the tray passes through the clearance mechanism after continuing to carry forward to the baffle 16 department of exit end by the tray conveyer, move by the upset motor 213 who fixes on upset motor mounting panel 2131 in the tray tilting mechanism, drive trip shaft 2121 through shaft coupling 218 and rotate, drive upset arm 212 simultaneously and rotate to limiting plate 2161 starting position for vacuum chuck 214 direction installed on sucking disc mounting panel 211 contacts the tray bottom downwards.

The vacuum generator 215 acts to generate negative pressure to adsorb the tray, and then the turnover motor 213 acts to drive the turnover arm 212 to rotate to the end position of the limiting plate 2161, at this time, the direction of the tray is upward.

After the upset targetting in place, among the tray elevating system, fix the cylinder on the cylinder mounting panel and stretch out, stretch out the in-process, install guide arm 223 in tilting mechanism mounting panel below supplementary cylinder under the bearing effect with the vertical upwards action of tray tilting mechanism to highest position, then take away the tray under the action of workstation relevant mechanism, carry out chemical examination work on next step. And then the air cylinder drives the tray turnover mechanism to return to the lowest position to wait for the next tray after cleaning.

To sum up, can accomplish the automatic process of clearing up of tray, whole process need not artifical the participation, when guaranteeing the clearance effect, has saved manpower resources, has improved the clean speed of tray.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A tray cleaning apparatus, comprising: the device comprises a tray conveying mechanism (1), a tray taking and placing mechanism (2), a cleaning mechanism (3), a pressing conveying mechanism (4) and a controller (5);

an inlet end and an outlet end are arranged on the tray conveying mechanism (1), and a tray conveying channel is formed from the inlet end to the outlet end;

the tray taking and placing mechanism (2) is provided with two inlet ends and two outlet ends which are respectively arranged at the inlet end and the outlet end of the tray conveying mechanism (1) and used for placing trays at the inlet ends or taking the trays from the outlet ends;

the cleaning mechanism (3) is arranged on a conveying channel of the tray conveying mechanism (1) and is used for cleaning the tray;

the pressing conveying mechanism (4) is arranged on the tray conveying mechanism (1), is positioned above the cleaning mechanism (3), and is used for pressing the tray on the cleaning mechanism (3);

the controller (5) is electrically connected with the tray conveying mechanism (1), the tray taking and placing mechanism (2), the cleaning mechanism (3) and the pressing conveying mechanism (4) and is used for controlling the operation of each electric connecting part to clean the tray.

2. The tray cleaning apparatus according to claim 1, wherein the tray conveying mechanism (1) includes: the device comprises a carrier roller (11), a conveying bracket (12), a conveying motor (13) and a conveying chain (14);

The carrier roller (11) is mounted at the top of the conveying support (12) to form a conveying channel, and a carrier roller scraper (15) is mounted at the bottom of the carrier roller (11);

installing baffles (16) at the inlet of the conveying bracket (12) and the outlet of the conveying bracket (12);

the conveying motor (13) is arranged on the conveying support (12) through a conveying motor support (131), is electrically connected with the controller (5) and is positioned at the bottom of the carrier roller (11), and a conveying driving chain wheel (17) is arranged on the conveying motor (13);

the conveying chain (14) is arranged on one side of the carrier roller (11) and connected with the conveying driving chain wheel (17), a chain cover plate (141) is arranged above the conveying chain (14), and a guide plate (18) is arranged on the other side of the carrier roller (11).

3. The pallet cleaning apparatus according to claim 1, characterized in that the pallet pick and place mechanism (2) comprises: the tray conveying mechanism comprises a tray overturning mechanism (21) and a tray lifting mechanism (22), wherein the tray lifting mechanism (22) is arranged on one side of the tray conveying mechanism (1), and the tray overturning mechanism (21) is arranged at the top end of the tray lifting mechanism (22).

4. The tray cleaning apparatus according to claim 3, wherein the tray overturning mechanism (21) comprises: the vacuum cup turning device comprises a sucker mounting plate (211), a turning arm (212), a turning motor (213), a vacuum sucker (214) and a vacuum generator (215);

The sucker mounting plate (211) is mounted at the free end of the turnover arm (212), and the turnover arm (212) is rotatably mounted at the top end of the tray lifting mechanism (22) through a turnover shaft (2121);

the overturning motor (213) is connected with the overturning shaft (2121) and is used for driving the overturning shaft (2121) to drive the sucker mounting plate (211) to overturn through the overturning arm (212);

the vacuum chuck (214) is arranged on the chuck mounting plate (211), and the vacuum generator (215) is arranged on the turnover arm (212) through a vacuum device mounting frame (2151) and is communicated with the vacuum chuck (214) through an air pipe;

the turnover motor (213) and the vacuum generator (215) are electrically connected with the controller (5).

5. The tray cleaning apparatus according to claim 4, wherein the tray overturning mechanism (21) further comprises: the bottom of the overturning mounting plate (216) is fixed with the tray lifting mechanism (22), and the overturning arm (212) is rotatably mounted on the overturning mounting plate (216) through an overturning shaft (2121);

a bearing seat plate (217) is arranged on one side of the overturning shaft (2121), a coupler (218) is arranged on the other side of the overturning shaft, an overturning motor mounting plate (2131) is arranged on the coupler (218), and the overturning motor (213) is arranged on the overturning motor mounting plate (2131);

A limiting plate (2161) is arranged on the overturning mounting plate (216), and the overturning arm (212) is rotatably connected with the limiting plate (2161) through an overturning shaft (2121).

6. The tray cleaning apparatus according to any one of claims 3 to 5, wherein the tray lifting mechanism (22) comprises: a driving mounting plate (221), a lifting drive (222), a guide rod (223) and a linear bearing (224);

the driving mounting plate (221) is fixed on the tray conveying mechanism (1);

the lifting drive (222) is fixed at the center of the drive mounting plate (221) and is electrically connected with the controller (5), a telescopic rod is arranged on the lifting drive, the telescopic rod penetrates through the drive mounting plate (221) to be connected with the tray turnover mechanism (21), and the lifting drive (222) drives the telescopic rod to drive the tray turnover mechanism (21) to lift;

the linear bearings (224) are arranged at two ends of the driving installation plate (221) respectively, and the guide rods (223) are arranged to penetrate through the linear bearings (224) to be connected with the tray turnover mechanism (21).

7. The tray cleaning apparatus according to claim 1, wherein the cleaning mechanism (3) comprises: a cleaning roller (31), a cleaning motor mounting plate (32), a cleaning motor (33) and a cleaning chain wheel (35);

The cleaning roller (31) is arranged in the middle of the tray conveying mechanism (1) through a bearing seat (36);

the cleaning motor mounting plate (32) is fixed at the bottom of the tray conveying mechanism (1);

the cleaning motor (33) is mounted on the cleaning motor mounting plate (32) through a cleaning motor support (34) and is electrically connected with the controller (5), and a cleaning driving chain wheel (37) is mounted at one end of the cleaning motor (33);

the cleaning chain wheel (35) is arranged at one end of the cleaning roller (31), and the cleaning chain wheel (35) is connected with the cleaning driving chain wheel (37) through a cleaning chain (38).

8. The tray cleaning apparatus according to claim 1, wherein the pressing conveyance mechanism (4) includes: the device comprises a frame (41), a roller (42), a pressing motor bracket (43) and a pressing motor (44);

the frame (41) is provided with two brackets which are respectively fixed on two sides of the top of the tray conveying mechanism (1) and positioned above the cleaning mechanism (3);

the two ends of the roller (42) are arranged on the frame (41) through roller bearing seats (45);

the pressing motor support (43) is erected on the frame (41) and located above the roller (42), the pressing motor (44) is arranged on the pressing motor support (43) and electrically connected with the controller (5), a pressing driving chain wheel (46) is arranged at one end of the pressing motor (44), and the pressing driving chain wheel (46) is connected with the roller (42) through a pressing chain (47).

9. The tray cleaning apparatus according to claim 8, wherein the frame (41) includes: a guide post (411), a cross beam (417), a guide post bearing (413) and a pressure plate (414);

the bottom of the guide post (411) is fixed on the tray conveying mechanism (1) through a guide post mounting seat (415);

two ends of the cross beam (417) are fixed with the guide post bearing bracket (416);

the guide post bearing (413) is sleeved on the outer side of the guide post (411), and the bottom of the guide post bearing (413) is fixed to the top of the guide post bearing bracket (416);

the pressing plate (414) is fixed on the top of the guide pillar (411), and the top of the guide pillar bearing (413) is connected with the pressing plate (414) through a spring.

10. The tray cleaning apparatus according to claim 1, further comprising: a dust cover (6) and a dust collection cover (7);

the dust cover (6) is arranged at the top of the inlet end of the tray conveying mechanism (1), an opening is formed in the dust cover (6), a brush strip (61) is arranged on the opening, a dust-proof suction port (62) is formed in the side face of the dust cover (6), and the dust-proof suction port (62) is communicated with a dust removal system;

the dust collection cover (7) is arranged at the bottom of the inlet end of the tray conveying mechanism (1), a dust collection suction port (71) is arranged on one side of the dust collection cover (7), the dust collection suction port (71) is communicated with a dust removal system, and a cleaning port is arranged on the other side of the dust collection cover (7).