CN219971187U - Automatic material collecting and stacking disc device - Google Patents

Abstract

This application provides an automatic material collecting and stacking device, which includes a frame body, a stacking frame, a conveying mechanism, a lifting mechanism and a supporting block. Among them, the frame body includes two side plates that are opposite and spaced apart; the stacking tray is set up above the two side plates and a tray inlet is provided on the bottom side; the conveying mechanism includes a tray for transporting the material tray to the upper and lower positions corresponding to the tray inlet. Two conveyor belts; the lifting mechanism includes a pushing piece for lifting the material tray into the tray stacking rack through the tray inlet; the supporting block is rotatably installed on the side plate and can be blocked on the third side of the tray inlet. Rotate between one position and a second position avoiding the opening. The automatic collecting and stacking device transports the material trays through the conveying mechanism. Through the cooperation of the lifting mechanism and the supporting block, the material trays are stacked in the tray stacking frame. It has a high degree of automation. The stacking process of the material trays is smooth and efficient, and reduces the workload. Improve the working intensity of workers and improve work and production efficiency.

Description

Automatic stacking device

Technical field

The present application relates to the technical field of automation devices, and in particular, to an automatic collecting and stacking device.

Background technique

In order to improve production efficiency, more and more products are produced using assembly line operations. Between different processing processes, in order to avoid small components moving individually, multiple components required for one processing process are often placed on the material. Centralized feeding is carried out in the tray. In order to facilitate the transportation and storage of trays, whether they are trays containing components or empty trays formed after processing, they are generally stored in stacks. At present, collection and stacking are usually done manually, which is inefficient, has high labor costs, and cannot adapt to the needs of automated production.

Contents of the invention

In order to solve the existing technical problems, this application provides an automatic material collecting and stacking device that can automatically transport and stack material trays.

In order to achieve the above objectives, the technical solutions of the embodiments of the present application are implemented as follows:

An embodiment of the present application provides an automatic material collecting and stacking device, which includes:

The frame body includes two opposite and spaced side panels;

The tray stacking rack is located above the two side plates. The bottom side of the tray stacking rack is provided with a tray inlet. The material trays can enter the tray stacking rack from bottom to top through the tray inlet to form a stack. ;

The conveyor mechanism includes two conveyor belts that rotate reciprocally in the horizontal direction. The two conveyor belts are spaced between the two side plates. The two conveyor belts are used to convey the material tray to the side plate. The upper and lower entry points correspond to each other;

The lifting mechanism includes a pushing piece that can move up and down. The pushing piece is provided between the two conveyor belts and is located below the tray inlet. The pushing piece is used to push up the material tray to pass through. The disk inlet enters the disk stacking rack;

A supporting block is rotatably provided on the side plates, and at least one supporting block is provided on each side plate, and the supporting block is rotatable between the first position and the second position;

When the supporting block rotates to the first position, the supporting block blocks the tray inlet and is arranged to support the material trays in the stacking tray; when the supporting block rotates When reaching the second position, the supporting block is arranged away from the tray inlet so that the material tray can enter the tray stacking rack from the tray inlet.

In one embodiment, the center of gravity of the supporting block when it is in the first position is lower than the center of gravity when it is in the second position, so that the supporting block is in the third position when it is only affected by gravity. One position.

In one embodiment, a mounting seat is installed on the top surface of the side plate, a mounting groove is recessed on one side of the mounting seat, a rotating shaft is provided in the mounting groove, and a mounting block is provided on the supporting block. A connecting hole through which the rotating shaft is disposed so that the supporting block can rotate in the mounting groove.

In one embodiment, the mounting groove has a contact surface parallel to the plane of the side plate, and a first plane and a second plane are formed on a side of the supporting block facing the contact surface, and the third plane A plane is connected to the second plane in an arc-shaped transition and the angle between the two planes is an obtuse angle;

When the supporting block rotates to the first plane and the contact surface, the supporting block is in the first position; when the supporting block rotates to the second plane and the contact surface When the contact surfaces are in contact, the supporting block is in the second position.

In one embodiment, a third plane and a fourth plane are formed on a side of the supporting block away from the contact surface. The angle between the third plane and the fourth plane is an acute angle and the angle between the two planes is an acute angle. The distance between them gradually increases toward the direction of the contact surface;

The third plane is arranged perpendicularly to the first plane, so that when the supporting block is in the first position, the third plane forms a horizontal plane to support the material tray; the fourth plane and The second plane is arranged in parallel, so that when the supporting block rotates to the second position, the fourth plane becomes a vertical plane to avoid the plate inlet.

In one of the embodiments, the stacked disk rack includes two first limiting members and two second limiting members arranged in four corners, and the two first limiting members are opposite and respectively provided at two locations. On the side plates, two of the second limiters are opposite to each other and are respectively provided on the two side plates. The two first limiters and the two second limiters are surrounded to form a In the stacking space for accommodating the material tray, the cross-sectional shape of the stacking space is adapted to the shape of the material tray.

In one embodiment, the first limiting member includes a first connecting plate and a second connecting plate arranged vertically, the first connecting plate is connected to the side plate, and the second connecting plate faces two The space between the side plates extends, the second limiting member includes a vertically arranged third connecting plate and a fourth connecting plate, the third connecting plate is connected to the side plates, and the fourth connecting plate Extending toward the space between the two side plates; the distance between the bottom end of the second connecting plate and the conveyor belt is greater than the height of the material tray, and the bottom end of the fourth connecting plate and the conveyor belt The distance between the belts is less than the height of the tray.

In one embodiment, a height sensor is provided on the tray stacking frame, and the height sensor is used to detect the stacking height of the material trays in the tray stacking frame.

In one embodiment, the lifting mechanism further includes a driving cylinder, the pushing member is connected to the output end of the driving cylinder, and the driving cylinder drives the pushing member to move up and down; and/or, the pushing member is connected to the output end of the driving cylinder. The conveying mechanism also includes a driving motor, both conveyor belts are drivingly connected to the driving motor, and the driving motor drives the two conveying belts to move synchronously.

The automatic collecting and stacking device of the present application has at least the following beneficial effects: The working process of the automatic collecting and stacking device of the present application is: the conveyor belt of the conveying mechanism transports the material trays to be stacked between the two side plates and stacks them with each other. The tray inlets on the bottom side of the tray rack are set up and down correspondingly; the pushing piece moves upward to lift up the trays to be stacked. During the upward movement of the trays to be stacked, the edges of the trays push the supporting blocks upwards. Rotate from the first position to the second position so that the material trays to be stacked can be lifted into the stacking frame. When the material trays to be stacked rise to separate from the supporting block, the supporting block rotates under the action of gravity and returns to the third position. The state of one position; the push piece supports the material tray to be stacked to move downward. When the material tray to be stacked moves to contact with the supporting block, the pushing piece continues to run downward, and the material tray to be stacked is supported by the supporting block. , and then complete the stacking of a material tray; looping the above stacking process in sequence can realize automatic and continuous stacking of material trays. The automatic collecting and stacking device has a high degree of automation, and the stacking process of the material trays is smooth and efficient, reducing the working intensity of the operators and improving work and production efficiency; the overall structure of the device is simple, cleverly designed and reasonably conceived, making it easy to promote and apply in the automated processing industry. .

Description of the drawings

Figure 1 is a schematic structural diagram of an automatic material collecting and stacking device according to an embodiment of the present application;

Figure 2 is a schematic diagram of the disassembled structure of the automatic material collecting and stacking device in Figure 1;

Figure 3 is a schematic diagram of the working state of the automatic material collecting and stacking device in Figure 1;

Figure 4 is a schematic diagram 2 of the working state of the automatic collecting and stacking device in Figure 1;

Figure 5 is a schematic diagram of the installation structure of the supporting block in Figure 1;

Figure 6 is a partial cross-sectional view of the supporting block in Figure 5 when it is in the first position;

Figure 7 is a partial cross-sectional view of the supporting block in Figure 5 when it is in the second position;

Figure 8 is a schematic structural diagram of the jacking mechanism in Figure 1;

Figure 9 is a schematic structural diagram of the conveying mechanism in Figure 1.

The components in the figure are numbered as follows: frame body 10; side plate 11; mounting seat 12; mounting groove 121; contact surface 1211; rotating shaft 122; stacking rack 20; first limiting member 21; first connecting plate 211; second Connecting plate 212; second limiting member 22; third connecting plate 221; fourth connecting plate 222; height sensor 23; conveyor belt 31; drive motor 32; support frame 33; transmission belt 34; first synchronizing wheel 35; second Synchronous wheel 36; synchronized shaft 37; driving wheel 38; driven wheel 39; pusher 41; driving cylinder 42; piston rod 421; supporting block 50; first plane 51; second plane 52; third plane 53; Four flat surfaces 54; connection holes 55; material tray 60.

Detailed ways

The technical solution of the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments of the description.

In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and are not indicated or implied. The devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be directly connected, or indirectly connected through an intermediary, or it can be internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

The embodiment of the present application provides an automatic material collecting and stacking device for automatically stacking material trays 60 . Please refer to FIGS. 1 and 2 . The automatic collecting and stacking device includes a frame body 10 , a stacking frame 20 , a conveying mechanism, a lifting mechanism and a supporting block 50 . Among them, the frame body 10 includes two side plates 11 that are opposite and spaced apart; the tray stacking rack 20 is provided above the two side panels 11 for accommodating the material tray 60, and the bottom side of the tray stacking rack 20 is provided with a tray inlet , the tray inlet is positioned between the two side plates 11 with the tray inlet facing downwards, and the material tray 60 can enter the stacking rack 20 from bottom to top through the tray inlet to form a stack; the conveyor mechanism includes two conveyors that rotate reciprocally in the horizontal direction. Belt 31, two conveyor belts 31 are arranged between the two side plates 11 and are arranged at intervals. The two conveyor belts 31 are used to transport the material tray 60 to the upper and lower positions corresponding to the tray inlet; the lifting mechanism includes an up and down movable The push piece 41 is located between the two conveyor belts 31 and is located below the tray inlet. The push piece 41 is used to push the material tray 60 through the tray inlet into the tray stacking rack 20; the support The block 50 is rotatably provided on the side plate 11 and can rotate between the first position and the second position. Each side plate 11 is provided with at least one supporting block 50. When the supporting block 50 rotates to the first position When, the supporting block 50 blocks the tray inlet to support the material tray 60 in the tray stack 20, when the supporting block 50 rotates to the second position, the supporting block 50 avoids the tray inlet to allow the materials to The disk 60 can enter the disk stacking rack 20 from the disk opening.

Please refer to Figure 3 and Figure 4. The working process of the automatic collecting and stacking device is as follows: the supporting block 50 is in the first position under normal conditions and supports the stack of material trays in the stacking rack 20. The material trays to be stacked 60 is transported on the conveyor mechanism, and the two conveyor belts 31 convey the trays 60 to be stacked between the two side plates 11 and are set up and down correspondingly to the tray inlet on the bottom side of the stacking rack 20; the pusher 41 moves upward to Push up the material tray 60 to be stacked. During the upward movement of the material tray 60 to be stacked, the edge of the material tray 60 pushes the supporting block 50 upward to cause the supporting block 50 to rotate from the first position to the second position. When the block 50 rotates to the second position, the stacking tray 60 contacts the stack of trays in the stacking rack 20 and forms a stack (as shown in Figure 4). The pusher 41 supports the stack of trays and continues to move upward to make the stack The lower material trays 60 to be stacked are separated from the supporting block 50. At this time, the supporting block 50 rotates and returns to the first position under the action of gravity; the pusher 41 supports the stack of material trays to move downward. When the material trays When the pile moves to contact with the supporting block 50, the pushing member 41 continues to run downward, and the pile of material trays is supported by the supporting block 50, thus completing the automatic stacking of a material tray 60 (as shown in Figure 3); The stacking process is circulated in sequence, and automatic and continuous stacking of the material trays 60 can be realized. The stacking process of the material trays 60 is smooth and efficient, which can reduce the working intensity of the operators and improve work efficiency.

In order to keep the supporting block 50 in the first position under normal conditions, that is, only under the action of gravity without interference from external forces, the center of gravity of the supporting block 50 when it is in the first position is lower than the center of gravity when it is in the second position. In this way, the supporting block 50 can rotate under the action of external force. When the external force disappears, the supporting block 50 can rotate back to the first position.

Specifically, please refer to Figure 5. The top surface of the side plate 11 is equipped with a mounting base 12. One side of the mounting base 12 is recessed with a mounting groove 121. The mounting groove 121 is provided with a rotating shaft 122. The supporting block 50 is provided with a The connecting hole 55 is provided with the rotating shaft 122 passing through the connecting hole 55 so that the supporting block 50 can rotate in the mounting groove 121 . The mounting base 12 can be fixed to the top surface of the side plate 11 by welding, bolting, etc. The mounting slot 121 is provided on the side of the side plate 11 where the mounting base 12 is located facing the other side plate 11. The mounting slot 121 is in the vertical direction. Extended, the rotating shaft 122 is horizontal and parallel to the plane where the side plates 11 are located, so that the supporting block 50 can rotate toward the space between the two side plates 11, so that the supporting block 50 blocks or avoids the disk inlet. . There are four supporting blocks 50 in this embodiment, two supporting blocks 50 are provided on each side plate 11 , and the four supporting blocks 50 support the bottom four corners of the material tray 60 . Of course, in other embodiments, there may be other numbers of supporting blocks 50 , for example, there may be two supporting blocks 50 arranged diagonally, or there may be six supporting blocks 50 and three supporting blocks 50 may be provided on each side panel 11 . 50 supporting blocks, etc.

Please refer to FIGS. 6 and 7 . The mounting groove 121 has a contact surface 1211 parallel to the plane of the side plate 11 . A first plane 51 and a second plane 52 are formed on the side of the supporting block 50 facing the contact surface 1211 of the mounting groove 121 . , the angle between the first plane 51 and the second plane 52 is an obtuse angle. When the supporting block 50 rotates to the first plane 51 and the contact surface 1211, the supporting block 50 is in the first position (as shown in FIG. 6); when the supporting block 50 rotates to the second plane 52 and the contact surface 1211 When attached, the supporting block 50 is in the second position (as shown in Figure 7). The first plane 51 and the second plane 52 are connected through an arc-shaped transition, so that the supporting block 50 can and can only rotate between the first position and the second position. A third plane 53 and a fourth plane 54 are formed on the side of the supporting block 50 away from the contact surface 1211 of the mounting groove 121 . The angle between the third plane 53 and the fourth plane 54 is an acute angle and the distance between the two planes is It gradually increases toward the contact surface 1211 . The third plane 53 is arranged perpendicularly to the first plane 51, and the fourth plane 54 is arranged parallel to the second plane 52, so that when the supporting block 50 is in the first position, the third plane 53 is horizontal to support the stack of material trays. When the supporting block 50 rotates to the second position, the fourth flat surface 54 becomes a vertical surface to avoid the opening of the material tray 60 .

The material tray 60 may have a trapezoidal platform structure as a whole, including four side walls and a bottom wall. The side walls and the bottom wall enclose a storage space for accommodating materials. The cross-sectional area of the material tray 60 decreases from top to bottom, so that when multiple material trays 60 are stacked one after another in the vertical direction, the bottom of the previous material tray 60 can be accommodated above the next material tray 60 In the opening, it is ensured that the stacked material trays 60 do not move relative to each other on the horizontal plane and are stacked neatly in the vertical direction. In order to prevent the stack of trays from tipping over, the tray stacking rack 20 includes two first limiting members 21 and two second limiting members 22 arranged at four corners. The two first limiting members 21 are opposite and are respectively provided on two sides. On the plate 11 , two second limiting members 22 are opposite and respectively provided on the two side plates 11 . The first limiting member 21 and the second limiting member 22 may be right-angled plates with an L-shaped cross-section. The two first limiting members 21 and the two second limiting members 22 are jointly surrounded to form a container for containing materials. The cross-sectional shape of the stacking space of the tray 60 is rectangular and matches the shape of the material tray 60. The bottom ends of the two first limiting members 21 and the two second limiting members 22 form a tray inlet. By setting the first limiter 21 and the second limiter 22, the horizontal position of the material tray 60 can be limited. The four corners of the material tray 60 are in sliding contact with the inner side of the limiter, which is beneficial for the material tray 60 to follow the pusher. 41 moves up and down. It should be understood that the shape of the material tray 60 shown is only an example, and the material tray 60 can also adopt other suitable shapes. Correspondingly, the first limiting member 21 and the second limiting member 22 can also be in the same shape as the material tray. 60 contours adapted to other structures.

As shown in FIG. 1 , the first limiting member 21 includes a vertically arranged first connecting plate 211 and a second connecting plate 212 . The first connecting plate 211 is fixedly connected to the side plate 11 , such as bolted, and the second connecting plate 212 faces toward the side plate 11 . The space between the two side plates 11 extends; the second limiting member 22 includes a vertically arranged third connecting plate 221 and a fourth connecting plate 222. The third connecting plate 221 is fixedly connected to the side plate 11, such as bolted connection. The four connecting plates 222 extend toward the space between the two side plates 11 . The distance between the bottom end of the second connecting plate 212 and the conveyor belt 31 is greater than the height of the material tray 60 , and the distance between the bottom end of the fourth connecting plate 222 and the conveyor belt 31 is less than the height of the material tray 60 . In this way, the material tray 60 can be transported by the conveyor belt 31 from below the two second connecting plates 212 into the space between the two side plates 11. When the material tray 60 moves to contact the fourth connecting plate 222, the material tray 60 is The fourth connecting plate 222 blocks the stop movement. At this time, the continuous movement of the conveyor belt 31 does not affect the position of the material tray 60, and the material tray 60 can correspond up and down to the tray inlet. By designing the lengths of the second connecting plate 212 and the fourth connecting plate 222, the material tray 60 can still be fixed at the corresponding position of the inlet when the conveyor belt 31 continues to move, without having to repeatedly open and close the conveyor belt 31 to ensure that the material Tray 60 transport and stacking continuity.

Preferably, the first limiting member 21 is provided with a height sensor 23 for detecting the stacking height of the material trays 60 in the stacking rack 20 to prevent the material trays 60 from being stacked too high and exceeding the height range of the stacking space, thereby causing collapse. When the material trays 60 are stacked to a certain height, the user can take out the material trays 60 upward through the top openings of the first limiting member 21 and the second limiting member 22 .

Please refer to Figure 8. The lifting mechanism also includes a driving cylinder 42. The pushing member 41 is connected to the output end of the driving cylinder 42. The driving cylinder 42 drives the pushing member 41 to move up and down. Specifically, the driving cylinder 42 has a telescopic and sliding piston rod 421, and the pusher 41 is fixedly connected to the end of the piston rod 421. The pusher 41 can be a flat structure, and the pusher 41 is arranged horizontally to communicate with the material tray 60. The bottom is fully contacted, thereby pushing the material tray 60 to move up and down.

Please refer to FIG. 9 . The conveying mechanism also includes a driving motor 32 . Both conveyor belts 31 are drivingly connected to the driving motor 32 . The driving motor 32 drives the two conveyor belts 31 to move synchronously. Specifically, the conveying mechanism also includes a support frame 33 , a transmission belt 34 , a first synchronizing wheel 35 , a second synchronizing wheel 36 , a synchronizing shaft 37 , a driving wheel 38 and a driven wheel 39 . The first synchronizing wheel 35 is arranged at the output end of the driving motor 32 , and the driving motor 32 can drive the first synchronizing wheel 35 to rotate; the second synchronizing wheel 36 is arranged on the transmission shaft, so that the second synchronizing wheel 36 can rotate synchronously with the synchronizing shaft 37 The transmission belt 34 drives the first synchronization wheel 35 and the second synchronization wheel 36, so that the second synchronization wheel 36 can rotate synchronously with the first synchronization wheel 35 under the traction of the transmission belt 34; the synchronization shaft 37 is rotatably provided on the support frame 33 There is a driving wheel 38 on the top and at both ends, so that both driving wheels 38 can rotate synchronously with the synchronization shaft 37; there are two driven wheels 39 and they are respectively installed on both sides of the support frame 33. The two conveyor belts 31 are respectively The transmission connects a driving wheel 38 and a driven wheel 39 located on the same side, so that the driven wheel 39 can rotate synchronously with the driving wheel 38 under the traction of the conveyor belt 31 . When the driving motor 32 drives the first synchronous wheel 35 to rotate, the first synchronous wheel 35 drives the second synchronous wheel 36 to rotate through the transmission belt 34, and then drives the synchronous shaft 37 and the two driving wheels 38 to rotate, thereby realizing the reciprocating rotation of the conveyor belt 31. . The top surfaces of the two conveyor belts 31 can be configured for horizontal conveyance by designing the size and shape of the driving wheel 38 and the driven wheel 39. The two conveyor belts 31 move synchronously to facilitate carrying and conveying the material tray 60.

In summary, the automatic collecting and stacking device of the embodiment of the present application transports the material trays 60 through the conveying mechanism, and the material trays 60 are stacked in the tray stacking frame 20 through the cooperation of the jacking mechanism and the supporting block 50 , with a high degree of automation, the stacking process of the material tray 60 is smooth and efficient, reducing the working intensity of the operators and improving work and production efficiency. The device has a simple structure, ingenious design and reasonable conception, and is convenient for promotion and application in the automated processing industry.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. All are covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (9)

1. An automatic material collecting and stacking device, characterized in that it includes: The frame body includes two opposite and spaced side panels; The tray stacking rack is located above the two side plates. The bottom side of the tray stacking rack is provided with a tray inlet. The material trays can enter the tray stacking rack from bottom to top through the tray inlet to form a stack. ; The conveyor mechanism includes two conveyor belts that rotate reciprocally in the horizontal direction. The two conveyor belts are spaced between the two side plates. The two conveyor belts are used to convey the material tray to the side plate. The upper and lower entry points correspond to each other; The lifting mechanism includes a pushing piece that can move up and down. The pushing piece is provided between the two conveyor belts and is located below the tray inlet. The pushing piece is used to push up the material tray to pass through. The disk inlet enters the disk stacking rack; A supporting block is rotatably provided on the side plates, and at least one supporting block is provided on each side plate, and the supporting block is rotatable between the first position and the second position; When the supporting block rotates to the first position, the supporting block blocks the tray inlet and is arranged to support the material trays in the stacking tray; when the supporting block rotates When reaching the second position, the supporting block is arranged away from the tray inlet so that the material tray can enter the tray stacking rack from the tray inlet. 2. The automatic stacking device according to claim 1, wherein the center of gravity of the supporting block when it is in the first position is lower than the center of gravity when it is in the second position, so that the center of gravity of the supporting block is lower than the center of gravity of the supporting block when it is in the second position. The supporting block is in the first position when acted upon only by gravity. 3. The automatic stacking device according to claim 2, characterized in that a mounting seat is installed on the top surface of the side plate, and a mounting groove is recessed on one side of the mounting seat, and the mounting groove is recessed. A rotating shaft is provided inside, and a connecting hole is provided on the supporting block. The rotating shaft is arranged through the connecting hole so that the supporting block can rotate in the mounting groove. 4. The automatic stacking device according to claim 3, wherein the mounting groove has a contact surface parallel to the plane of the side plate, and the supporting block faces the side of the contact surface. A first plane and a second plane are formed, the first plane and the second plane are connected in an arc-shaped transition and the angle between them is an obtuse angle; When the supporting block rotates to the first plane and the contact surface, the supporting block is in the first position; when the supporting block rotates to the second plane and the contact surface When the contact surfaces are in contact, the supporting block is in the second position. 5. The automatic collecting and stacking device according to claim 4, wherein a third plane and a fourth plane are formed on the side of the supporting block away from the contact surface, and the third plane is connected to the said contact surface. The angle between the fourth plane is an acute angle and the distance between the two planes gradually increases toward the direction of the contact surface; The third plane is arranged perpendicularly to the first plane, so that when the supporting block is in the first position, the third plane forms a horizontal plane to support the material tray; the fourth plane and The second plane is arranged in parallel, so that when the supporting block rotates to the second position, the fourth plane becomes a vertical plane to avoid the plate inlet. 6. The automatic material collecting and stacking device according to any one of claims 2 to 5, characterized in that the stacking frame includes two first limiting parts and two second limiting parts arranged in four corners. , two of the first limiting parts are opposite and are respectively provided on the two side plates, two of the second limiting parts are opposite and are respectively provided on the two side plates, and the two second limiting parts are opposite and are respectively provided on the two side plates. One limiting member and two second limiting members surround a stacking space for accommodating the material tray, and the cross-sectional shape of the stacking space is adapted to the shape of the material tray. 7. The automatic stacking device according to claim 6, wherein the first limiting member includes a first connecting plate and a second connecting plate arranged vertically, and the first connecting plate and the The side plates are connected, the second connecting plate extends toward the space between the two side plates, the second limiting member includes a vertically arranged third connecting plate and a fourth connecting plate, the third connecting plate Connected to the side plates, the fourth connecting plate extends toward the space between the two side plates; the distance between the bottom end of the second connecting plate and the conveyor belt is greater than the height of the material tray, The distance between the bottom end of the fourth connecting plate and the conveyor belt is less than the height of the material tray. 8. The automatic collecting and stacking device according to claim 6, characterized in that a height sensor is provided on the stacking frame, and the height sensor is used to detect the stacking height of the material trays in the stacking frame. . 9. The automatic stacking device according to claim 1, wherein the lifting mechanism further includes a driving cylinder, the pushing member is connected to the output end of the driving cylinder, and the driving cylinder drives The pushing member moves up and down; and/or the conveying mechanism further includes a driving motor, both conveyor belts are drivingly connected to the driving motor, and the driving motor drives the two conveying belts to move synchronously.