Automatic tray loading and unloading device

Abstract

The utility model relates to automatic production line conveying equipment technical field discloses a kind of automatic feeding and discharging devices of tray, including feeding conveying line, discharging conveying line, transfer mechanism and baffle disc structure. The automatic feeding and discharging device of above-mentioned tray arranges the discharging conveying line and feeding conveying line of tray according to up and down double layer, cooperate the action of transfer mechanism, complete the turnover of tray from tray station, receiving material station to tray station, change traditional lengthy horizontal conveying to stereoscopic type repeated conveying mode, greatly reduce floor area, guarantee the efficient turnover of tray;In addition, by the baffle disc structure that can automatically switch with the action of transfer mechanism and carry out material blocking and discharging operation, control one after another tray on feeding conveying line orderly reach tray station with production rhythm, effectively solve the problem of material blocking, without additional power source, simplify device structure, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of automated production line conveying equipment technology, and in particular to an automatic loading and unloading device for material trays. Background Technology

[0002] On automated production lines, material trays, as the core carriers of materials, need to be continuously transferred via conveyor lines. When connecting to material production lines, a common design is for material trays to flow sequentially between loading stations, buffer stations, receiving stations, and unloading stations, corresponding to the functions of empty tray loading, queuing, offline receiving, and full tray unloading.

[0003] The existing automatic tray conveying device technology has the following problems:

[0004] 1) To simplify the material tray flow path, the conveying device is set on one side of the material production line and mostly adopts a horizontal layout. Each station is arranged in sequence along the conveying line, resulting in a long and cumbersome conveying device structure and a large footprint.

[0005] 2) In order to match the production cycle of the material production line and reduce the storage pressure of buffer stations, it is necessary to adjust the conveying speed of the conveying device, and control it to accelerate, decelerate or stop the conveying, which increases the complexity of the structure and control program of the conveying device and the equipment cost.

[0006] 3) The degree of automation is not high, the material tray turnover efficiency is low, and it cannot meet the needs of high-speed production. Utility Model Content

[0007] Based on the above, the purpose of this utility model is to provide a compact, low-cost, and efficient automatic loading and unloading device for material trays.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An automatic material tray loading and unloading device includes a loading conveyor line, a unloading conveyor line, a transfer mechanism, and a baffle structure, wherein:

[0010] The feeding conveyor line is used to transport empty trays in the first direction, and a tray retrieval station is set on the feeding conveyor line;

[0011] The unloading conveyor is arranged parallel above the loading conveyor and is used to convey the material trays loaded with materials in a second direction opposite to the first direction. The unloading conveyor is equipped with a tray placement station.

[0012] The transfer mechanism is located on one side of the loading and unloading conveyor lines. The transfer mechanism is used to obtain the tray from the tray-taking station, move the tray to the receiving station for receiving materials, and move the tray after loading materials to the unloading station.

[0013] The baffle structure is set on the feeding conveyor line. The baffle structure includes a rotating baffle located in front of the tray picking station. The rotating baffle is driven by the transfer mechanism that enters and exits the tray picking station and is lower or higher than the conveying plane of the feeding conveyor line, so that the tray can be fed smoothly to the tray picking station or blocked and unable to reach the tray picking station.

[0014] As an alternative, the material tray is a rectangular tray with a length dimension greater than its width dimension. The loading conveyor line and the unloading conveyor line each include two synchronously arranged conveyor belts. The two long sides of the material tray are supported by the two synchronously arranged conveyor belts of the loading conveyor line, and the two wide sides of the material tray are supported by the two synchronously arranged conveyor belts of the unloading conveyor line.

[0015] As an alternative, a rotating baffle is installed between two synchronous conveyor belts of the feeding conveyor line. The first end of the rotating baffle extends toward the tray removal station, and the second end of the rotating baffle is equipped with a counterweight.

[0016] When the transfer mechanism is in the tray-retrieving position, the transfer mechanism presses against the first end of the rotating baffle, making the rotating baffle lower than the conveying plane of the feeding conveyor line, thus realizing the material discharge function;

[0017] When the transfer mechanism leaves the tray-retrieving station, the first end of the rotating baffle is raised by the counterweight and rises above the conveying plane of the feeding conveyor line, thus achieving the material blocking function.

[0018] As an alternative, the first end of the rotating baffle is provided with an extension frame, and the extension frame is provided with a contact block that contacts the bottom of the transfer mechanism.

[0019] As an alternative, a first stop is installed on the feeding conveyor line. The first stop is used to create an upper limit on the extension frame, thereby limiting the maximum tilting angle of the rotating baffle.

[0020] As an optional solution, the first stop is provided with a waist-shaped hole, which is used to adjust the fixed position of the first stop on the feeding conveyor line, so that the maximum tilting angle of the rotating baffle is adjustable.

[0021] As an alternative, a stop bolt is provided on the extension frame at the first end of the rotating baffle. The stop bolt is used to prevent the material tray from flipping over the rotating baffle when the first end of the rotating baffle is tilted up.

[0022] As an optional solution, the transfer mechanism includes a vertical frame set on the same side as the tray picking station and the tray placing station. The vertical frame is equipped with a vertically arranged electric slide. The slide part of the electric slide is equipped with a mounting base plate. The mounting base plate is used to apply pressure to the first end of the rotating baffle. The mounting base plate is equipped with a rotating disk. The rotating disk is equipped with a positioning fixture adapted to the tray. The rotating disk is used to rotate the tray taken from the loading conveyor line by 90° to adapt to the unloading conveyor line.

[0023] As an optional solution, the tray picking station, tray placement station, and material receiving station are arranged sequentially from bottom to top and located on the same vertical line. The transfer mechanism is used to first lift the tray from the tray picking station to the material receiving station, then rotate the tray 90° to receive the material, and after receiving the material, lower the tray from the tray picking station to the tray placement station.

[0024] As an alternative, a second stop is provided at the tray retrieval station to limit the movement of the tray. A position sensor is provided on one side of the second stop to detect whether there is a tray at the tray retrieval station.

[0025] The beneficial effects of this utility model are:

[0026] This automatic tray loading and unloading device arranges the tray unloading and loading conveyor lines in a double-layered configuration. In conjunction with the transfer mechanism, it completes the flow of trays from the tray picking station, receiving station, and loading station. This transforms the traditional, lengthy horizontal conveying system into a three-dimensional, repetitive conveying method, significantly reducing the floor space required and ensuring efficient tray turnover. Furthermore, the tray blocking structure, which automatically switches between blocking and loading operations in sync with the transfer mechanism, controls the trays on the loading conveyor line to arrive at the tray picking station in an orderly manner according to the production cycle, effectively solving the problem of material blockage. It requires no additional power source, simplifies the device structure, and reduces costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the automatic loading and unloading device for material trays provided in this embodiment of the present invention when the material tray reaches the tray retrieval station;

[0028] Figure 2 This is a schematic diagram of the automatic tray loading and unloading device provided in this embodiment of the utility model when the tray is moved from the tray picking station to the receiving station and then placed back to the tray placing station.

[0029] Figure 3 This is a schematic diagram of the automatic loading and unloading device for the material tray resetting according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the action of the transfer mechanism of the automatic loading and unloading device for material trays provided in this embodiment of the utility model, which drives the material tray from the tray picking station to the receiving station and then to the tray placing station.

[0031] Figure 5 yes Figure 1 Enlarged view of point A in the middle;

[0032] Figure 6 yes Figure 2 Enlarged view of section B in the middle.

[0033] In the attached image:

[0034] 1. Feeding conveyor line;

[0035] 2. Material feeding conveyor line;

[0036] 3. Transfer mechanism; 31. Erecting frame; 32. Electric slide table; 33. Mounting base plate; 34. Rotary disc;

[0037] 4. Baffle structure; 41. Rotating baffle; 42. Counterweight; 43. Extension frame; 44. Contact block; 45. First stop block; 46. Oval hole; 47. Stop bolt;

[0038] 5. Tray retrieval station; 51. Second stop; 52. Position sensor;

[0039] 6. Tray placement station;

[0040] 7. Material receiving station;

[0041] 8. Material tray. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0047] Please see Figures 1 to 6 As shown, this embodiment provides an automatic loading and unloading device for material trays, including a loading conveyor line 1, a unloading conveyor line 2, a transfer mechanism 3, and a baffle structure 4, wherein:

[0048] The feeding conveyor line 1 is used to convey empty material trays 8 in the first direction, and a tray retrieval station 5 is provided on the feeding conveyor line 1;

[0049] The unloading conveyor line 2 is arranged parallel above the loading conveyor line 1 and is used to convey the loading tray 8 of the material in a second direction opposite to the first direction. The unloading conveyor line 2 is provided with a tray placement station 6.

[0050] The transfer mechanism 3 is located on one side of the loading conveyor line 1 and the unloading conveyor line 2. The transfer mechanism 3 is used to obtain the material tray 8 from the tray picking station 5, move the material tray 8 to the material receiving station 7, and move the material tray 8 after loading the material to the tray unloading station 6.

[0051] The baffle structure 4 is set on the feeding conveyor line 1. The baffle structure 4 includes a rotating baffle 41 located in front of the tray picking station 5. The rotating baffle 41 is driven by the transfer mechanism 3 that enters and exits the tray picking station 5 and is lower or higher than the conveying plane of the feeding conveyor line 1, so that the tray 8 can be smoothly fed to the tray picking station 5 or blocked and unable to reach the tray picking station 5.

[0052] Therefore, by arranging the unloading conveyor line 2 and the loading conveyor line 1 of the material tray 8 in a double-layer configuration, and cooperating with the action of the transfer mechanism 3, the material tray 8 is completed from the tray picking station 5, the receiving station 7, and the tray placement station 6. This transforms the traditional lengthy horizontal conveying into a three-dimensional, repetitive conveying method, greatly reducing the floor space occupied and ensuring the efficient flow of the material tray 8. In addition, through the tray blocking structure 4, which can automatically switch between blocking and releasing operations with the action of the transfer mechanism 3, the material trays 8 on the loading conveyor line 1 are controlled to arrive at the tray picking station 5 in an orderly manner according to the production rhythm, effectively solving the problem of material blockage.

[0053] In this embodiment, the material tray 8 is a rectangular tray with a length dimension greater than its width dimension. The feeding conveyor line 1 and the unloading conveyor line 2 each include two synchronously arranged conveyor belts. The two long sides of the material tray 8 are supported by the two synchronously arranged conveyor belts of the feeding conveyor line 1, and the two wide sides of the material tray 8 are supported by the two synchronously arranged conveyor belts of the unloading conveyor line 2.

[0054] To address this, the stability of the material tray 8 during the conveying process is ensured by double-sided support, preventing deviation or overturning. The gap between the two synchronous conveyor belts facilitates the arrangement of the baffle structure 4 and allows the transfer mechanism 3 to move up and down, making efficient use of space and resulting in a more compact device structure. Furthermore, given that the long side of the material tray 8 is longer than its wide side, the long side is designed to be supported by the loading conveyor line 1 and the short side by the unloading conveyor line 2. Therefore, there is a larger gap between the two synchronous conveyor belts of the unloading conveyor line 2, allowing the transfer mechanism 3 to directly drive the material tray 8 upward and pass through the unloading conveyor line 2 without obstruction. This simplifies the operation of the transfer mechanism 3 and the movement path of the material tray 8, thereby improving overall operational efficiency.

[0055] Optionally, a rotating baffle 41 is disposed between two synchronous conveyor belts of the feeding conveyor line 1. The first end of the rotating baffle 41 extends toward the tray-retrieving station 5, and a counterweight 42 is disposed at the second end of the rotating baffle 41. When the transfer mechanism 3 is at the tray-retrieving station 5, the transfer mechanism 3 presses against the first end of the rotating baffle 41, so that the rotating baffle 41 is lower than the conveying plane of the feeding conveyor line 1, thereby realizing the material unloading function. See details. Figure 1 When the transfer mechanism 3 leaves the tray-retrieving station 5, the first end of the rotating baffle 41 tilts up under the action of the counterweight 42 and rises above the conveying plane of the feeding conveyor line 1, thus achieving the material-blocking function. See details. Figure 2 .

[0056] Therefore, the rotating baffle 41 can automatically switch between blocking and releasing operations as the transfer mechanism 3 moves up and down, thereby controlling the subsequent material trays 8 to arrive at the tray-retrieving station 5 in an orderly manner, effectively solving the material blockage problem, reducing the speed requirements and implementation difficulty of the feeding conveyor line 1, eliminating the need for an additional power source, simplifying the structure, and reducing equipment costs.

[0057] Optionally, the first end of the rotating baffle 41 is provided with an extension frame 43, and the extension frame 43 is provided with a contact block 44 that contacts the bottom of the transfer mechanism 3.

[0058] Therefore, the extension frame 43, as an add-on to the rotating baffle 41, increases the lever arm length of the rotating baffle 41, making it easier and smoother to drive the rotating baffle 41 and reducing jamming. On the other hand, it prevents the transfer mechanism 3 from acting directly on the rotating baffle 41, which can disperse pressure and reduce the risk of deformation of the rotating baffle 41. The contact block 44 serves as the contact element and can be replaced separately, reducing maintenance costs. In addition, the height of the contact block 44 is adjusted according to the lower stroke limit of the transfer mechanism 3 to ensure that the rotating baffle 41 remains horizontal when the transfer mechanism 3 reaches the tray picking station 5, so as to hide under the conveying plane of the feeding conveyor line 1 and avoid interfering with the normal feeding of the tray 8.

[0059] Optionally, a first stop 45 is provided on the feeding conveyor line 1. The first stop 45 is used to form an upper limit position on the extension frame 43, thereby limiting the maximum tilting angle of the rotating baffle 41.

[0060] As the transfer mechanism 3 rises, the first end of the rotating baffle 41 gradually tilts upwards, extending above the conveying plane of the feeding conveyor line 1. This causes the material tray 8 to move from the feeding conveyor line 1 onto the tilted rotating baffle 41, becoming suspended and detached from the driving force of the feeding conveyor line 1. Ideally, the material tray 8, due to its forward inertia, will surge onto the rotating baffle 41, precisely disengaging from the feeding conveyor line 1 and preventing it from sliding down. If the tilt angle is too large, the material tray 8 may easily slide back onto the feeding conveyor line 1, causing repeated upward and downward movement and resulting in significant contact damage. If the tilt angle is too small, the material tray 8 will continue to move forward excessively under the drive of the feeding conveyor line 1. Therefore, the tilt angle of the rotating baffle 41 needs to be reasonable. The tilt angle can be easily adjusted using the first stop block 45 to ensure the normal operation of the material blocking function of the rotating baffle 41.

[0061] Furthermore, the first stop 45 is provided with a waist-shaped hole 46, which is used to adjust the fixed position of the first stop 45 on the feeding conveyor line 1, so that the maximum tilting angle of the rotating baffle 41 is adjustable.

[0062] Therefore, the position of the first stop 45 can be changed simply by tightening or loosening the fixing bolts, thereby enhancing the adaptability of the equipment. It can be quickly adjusted according to different material tray sizes or process requirements, reducing the cost of mechanical modification.

[0063] Optionally, a stop bolt 47 is provided on the extension frame 43 and at the first end of the rotating baffle 41. The stop bolt 47 is used to prevent the material tray 8 from flipping over the rotating baffle 41 when the first end of the rotating baffle 41 is tilted up.

[0064] Therefore, the stop bolt 47 serves as a secondary safety measure to prevent the material tray 8 from tipping over the rotating baffle 41 due to inertia, ensuring the reliable material blocking function. In addition, the extension length of the stop bolt 47 is adjustable, allowing for quick fine-tuning for different material tray 8 sizes. However, it should be noted that when the transfer mechanism 3 presses down on the contact block 44, the stop bolt 47 must be lower than the conveying plane of the feeding conveyor line 1, just like the first end of the rotating baffle 41, so as not to affect the normal feeding of the material tray 8.

[0065] Optionally, the transfer mechanism 3 includes a vertical frame 31 located on the same side as the tray picking station 5 and the tray placing station 6. A vertically arranged electric slide 32 is provided on the vertical frame 31. A mounting base plate 33 is provided on the slide portion of the electric slide 32. The mounting base plate 33 is used to apply pressure to the first end of the rotating baffle 41. A rotating disk 34 is provided on the mounting base plate 33. A positioning fixture adapted to the material tray 8 is provided on the rotating disk 34. The rotating disk 34 is used to rotate the material tray 8 taken from the loading conveyor line 1 by 90° to adapt to the unloading conveyor line 2.

[0066] Based on the movement path of the material tray 8, the electric slide table 32 realizes the vertical lifting function to meet the material tray 8's picking and placing needs. The rotary table 34 realizes the steering function and automatically adapts to the directional difference between the feeding conveyor line 1 and the unloading conveyor line 2. The mounting base plate 33 serves as the linkage of the rotating baffle 41. With the lifting action of the transfer mechanism 3 and the action of the counterweight 42, the rotating baffle 41 is rotated, reducing additional driving components and resulting in a simple and ingenious structure.

[0067] Furthermore, the tray picking station 5, tray placement station 6, and material receiving station 7 are arranged sequentially from bottom to top and located on the same vertical line. The transfer mechanism 3 is used to first lift the material tray 8 of the tray picking station 5 to the material receiving station 7, then rotate the material tray 8 90° to receive the material, and after receiving the material, lower the material tray 8 from the tray picking station 5 to the tray placement station 6.

[0068] Therefore, by adopting a three-station vertical layout, the movement path of the material tray 8 is shortened to the greatest extent. The transfer mechanism 3 only needs to complete the "lifting-rotating-lowering" action once, which has a fast cycle time, high repeatability, and improves the efficiency of continuous operation.

[0069] Optionally, a second stop 51 is provided at the tray picking station 5 to limit the tray 8. A position sensor 52 is provided on one side of the second stop 51. The position sensor 52 is used to detect whether there is a tray 8 at the tray picking station 5.

[0070] Therefore, the second stop 51 accurately positions the tray 8 that has reached the tray picking station 5, ensuring the repeatability accuracy of the transfer mechanism 3, so that subsequent processes can proceed smoothly and help improve the production cycle. When the position sensor 52 detects the tray 8, it promptly triggers the transfer mechanism 3 at the tray picking station 5 to rise, taking away one tray 8 while preventing the next tray 8 from reaching the tray picking station 5, so that the transfer mechanism 3 can return to the tray picking station 5. This reduces waiting time, improves the production cycle, and avoids empty grabbing or tray collision, which is suitable for high-speed production line requirements.

[0071] Specific action process:

[0072] ① An empty tray 8 is fed along the feeding conveyor line 1 to the tray removal station 5. At the same time, the transfer mechanism 3 is located at the tray removal station 5, and its mounting base 33 applies pressure to the first end of the rotating baffle 41. The rotating baffle 41 is in a flat position, as shown. Figure 1 As shown;

[0073] ② A tray 8 smoothly arrives at the tray-retrieving station 5 and is limited by the second stop 51. The arrival sensor 52 senses the tray 8 and sends an action signal to the transfer mechanism 3. The electric slide 32 drives the rotary table 34 to rise, lifting the tray 8, leaving the tray-retrieving station 5, passing through the tray-placing station 6, and arriving at the receiving station 7. At the same time, the first end of the rotating baffle 41 tilts up under the action of the counterweight 42, causing the next tray 8 to stop and wait. Figure 2 As shown;

[0074] ③ The rotary disk 34 drives the material tray 8 of the receiving station 7 to rotate 90°, waiting to receive materials. At the same time, the material tray 8 is adjusted to a position that matches the material feeding conveyor line 2.

[0075] ④ After receiving the material, the electric slide table 32 drives the rotary table 34 to descend, placing the material tray 8 loaded with material directly on the tray placement station 6. The material tray 8 is separated from the transfer mechanism 3 and flows out along the unloading conveyor line 2.

[0076] ⑤ The rotary disk 34 continues to descend, returning to its initial position. The mounting base plate 33 applies pressure again to the first end of the rotating baffle 41, and the rotating baffle 41 is placed in a flat position. At this time, the waiting material tray 8 can continue to be fed to the tray removal station 5. Figure 3 As shown, proceed to the next action cycle.

[0077] In summary, this automatic tray loading and unloading device, through the coordinated design of a double-layer conveyor line layout and a transfer mechanism 3, achieves efficient three-dimensional circulation of the tray 8, and has the following advantages:

[0078] 1) Space optimization: The use of double-layer conveyor lines (the upper conveyor line 1 supports the long side of the material tray 8 and the lower conveyor line 2 supports the wide side of the material tray 8) combined with the lifting and rotating actions of the transfer mechanism 3 transforms the traditional horizontal conveying into a vertical circulation path, greatly reducing the floor space required.

[0079] 2) Improved turnover efficiency: The transfer mechanism 3 uses the action of "lifting-rotating 90°-lowering" to make the material tray 8 quickly flow between the three stations of tray picking station 5, receiving station 7 and tray placing station 6, which improves turnover efficiency and simplifies the action and structure of the transfer mechanism 3.

[0080] 3) Clever solution to the material blockage problem: The non-powered rotating baffle 41 achieves automatic switching under the combined action of the counterweight 42 and the transfer mechanism 3. When the transfer mechanism 3 moves downward, the rotating baffle 41 is hidden under the conveying plane, allowing the material tray 8 to enter the tray picking station 5. When the transfer mechanism 3 moves upward, the rotating baffle 41 tilts up to block the subsequent material tray 8, thereby accurately controlling the feeding cycle.

[0081] 4) Enhanced stability and reliability: The double-sided synchronous conveyor belt design ensures stable conveying of the material tray 8 and enables the unobstructed passage of the baffle structure 4 and the transfer mechanism 3, resulting in a compact overall structure; the position sensor 52 and the second baffle 51 work together to accurately position the material tray 8, triggering the transfer mechanism 3 to drive the material tray 8 accurately and achieve efficient circulation of the material tray 8.

[0082] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An automatic tray loading and unloading device, characterized in that, It includes a feeding conveyor line (1), a discharging conveyor line (2), a transfer mechanism (3), and a baffle structure (4), wherein: The feeding conveyor line (1) is used to convey empty trays (8) in the first direction, and a tray removal station (5) is provided on the feeding conveyor line (1); The unloading conveyor line (2) is arranged parallel above the loading conveyor line (1) and is used to convey the loading tray (8) of the material in a second direction opposite to the first direction. The unloading conveyor line (2) is provided with a tray placement station (6). The transfer mechanism (3) is located on one side of the loading conveyor line (1) and the unloading conveyor line (2). The transfer mechanism (3) is used to obtain the material tray (8) from the tray-taking station (5), move the material tray (8) to the receiving station (7) to receive the material, and move the material tray (8) after loading the material to the tray-releasing station (6). The baffle structure (4) is disposed on the feeding conveyor line (1). The baffle structure (4) includes a rotating baffle (41) located in front of the tray taking station (5). The rotating baffle (41) is driven by the transfer mechanism (3) that enters and exits the tray taking station (5) and is lower or higher than the conveying plane of the feeding conveyor line (1), so that the tray (8) can be smoothly fed to the tray taking station (5) or blocked and unable to reach the tray taking station (5).

2. The automatic tray loading and unloading device according to claim 1, characterized in that, The tray (8) is a rectangular tray with a length dimension greater than its width dimension. The feeding conveyor line (1) and the unloading conveyor line (2) each include two synchronously arranged conveyor belts. The two long sides of the tray (8) are supported by the two synchronously arranged conveyor belts of the feeding conveyor line (1), and the two wide sides of the tray (8) are supported by the two synchronously arranged conveyor belts of the unloading conveyor line (2).

3. The automatic tray loading and unloading device according to claim 2, characterized in that, The rotating baffle (41) is disposed between the two synchronous conveyor belts of the feeding conveyor line (1). The first end of the rotating baffle (41) extends toward the tray taking station (5), and the second end of the rotating baffle (41) is provided with a counterweight (42). When the transfer mechanism (3) is in the tray-retrieving station (5), the transfer mechanism (3) presses against the first end of the rotating baffle (41), so that the rotating baffle (41) is lower than the conveying plane of the feeding conveyor line (1), thereby realizing the material release function; When the transfer mechanism (3) leaves the tray-retrieving station (5), the first end of the rotating baffle (41) is raised by the counterweight (42) and higher than the conveying plane of the feeding conveyor line (1) to realize the material blocking function.

4. The automatic tray loading and unloading device according to claim 3, characterized in that, An extension frame (43) is provided at the first end of the rotating baffle (41), and a contact block (44) is provided on the extension frame (43) to contact the bottom of the transfer mechanism (3).

5. The automatic tray loading and unloading device according to claim 4, characterized in that, The feeding conveyor line (1) is provided with a first stop (45), which is used to form an upper limit position on the extension frame (43) to limit the maximum tilting angle of the rotating baffle (41).

6. The automatic tray loading and unloading device according to claim 5, characterized in that, The first stop (45) is provided with a waist-shaped hole (46), which is used to adjust the fixed position of the first stop (45) on the feeding conveyor line (1) so that the maximum tilting angle of the rotating baffle (41) is adjustable.

7. The automatic tray loading and unloading device according to claim 4, characterized in that, A stop bolt (47) is provided on the extension frame (43) and at the first end of the rotating baffle (41). The stop bolt (47) is used to prevent the material tray (8) from flipping over the rotating baffle (41) when the first end of the rotating baffle (41) is tilted up.

8. The automatic tray loading and unloading device according to claim 3, characterized in that, The transfer mechanism (3) includes a vertical frame (31) set on the same side of the tray picking station (5) and the tray placing station (6). The vertical frame (31) is provided with a vertically arranged electric slide (32). The slide part of the electric slide (32) is provided with a mounting base plate (33). The mounting base plate (33) is used to apply pressure to the first end of the rotating baffle (41). The mounting base plate (33) is provided with a rotating disk (34). The rotating disk (34) is provided with a positioning fixture adapted to the tray (8). The rotating disk (34) is used to rotate the tray (8) taken off the loading conveyor line (1) by 90° to adapt to the unloading conveyor line (2).

9. The automatic tray loading and unloading device according to claim 8, characterized in that, The tray-taking station (5), the tray-placing station (6), and the material-receiving station (7) are arranged sequentially from bottom to top and located on the same vertical line. The transfer mechanism (3) is used to first lift the material tray (8) of the tray-taking station (5) to the material-receiving station (7), then rotate the material tray (8) 90° to receive the material, and after receiving the material, lower the material tray (8) from the tray-taking station (5) to the tray-placing station (6).

10. The automatic tray loading and unloading device according to claim 1, characterized in that, The tray-retrieving station (5) is provided with a second stop (51) to limit the tray (8). A position sensor (52) is provided on one side of the second stop (51). The position sensor (52) is used to detect whether the tray (8) is present at the tray-retrieving station (5).

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