Automatic tray taking and placing device

Abstract

The utility model discloses an automatic material tray taking and placing device which comprises a material bin used for storing material trays. The jacking assembly comprises a bottom plate, and the bottom plate can move up and down in the stock bin to bear the material disc; the bearing assemblies are located on the two sides of the upper portion of the stock bin and can be used for supporting the trays; the control assembly is located on one side of the stock bin and used for controlling the bearing assembly to rotate, the bearing assembly is arranged above the stock bin, the adjacent trays in the stock bin are isolated from one another, and the control assembly is used for changing the position of the bearing assembly to be matched with the jacking assembly to automatically place the trays into the stock bin or move the trays out of the stock bin. The automatic material tray taking and placing device is simple in structure, saves space, shortens the moving distance of the mechanical arm, and effectively improves the machining efficiency.

Description

Technical Field

[0001] This application belongs to the field of automation equipment technology, specifically relating to an automatic material tray picking and placing device. Background Technology

[0002] Because semiconductor devices are small in size, numerous in number, and easily damaged, they need to be placed in batches on trays before and after testing and sorting. The trays are then transferred through a tray conveying system to achieve batch transport of semiconductor devices.

[0003] A tray conveying system typically includes a feeding device, a receiving device, and a transport device. The testing and sorting device grabs semiconductor devices loaded on trays from the feeding device for testing and sorting. The receiving device uses its empty trays to receive semiconductor devices that have been tested and sorted by the testing and sorting device. The transport device provides trays loaded with semiconductor devices to be tested to the feeding device, transports empty trays from the feeding device to an empty tray hopper, and transports semiconductor devices that have completed testing and sorting to the receiving device. Both the feeding device and the receiving device can be trays for holding empty trays or full trays loaded with semiconductor devices.

[0004] However, traditional tray conveying systems require trays to be transferred sequentially between the feeding device, the hopper, and the receiving device. This requires the use of robotic arms or manual labor to place the trays in or remove them from the hopper. Currently, when the hopper receives trays, the trays to be recovered are directly pressed onto the trays inside the hopper, resulting in high precision requirements for the hopper and slow collection efficiency. Summary of the Invention

[0005] Purpose of the invention: This application provides an automatic tray picking and placing device, which aims to overcome the technical problem of slow efficiency when receiving or placing trays in a silo.

[0006] An automatic tray loading and unloading device according to an embodiment of this application includes: a hopper for storing trays;

[0007] A lifting assembly, comprising a base plate that can move up and down within the hopper to support the material tray;

[0008] A receiving component, located on both sides above the hopper, is used to receive the material tray;

[0009] A control component, located on one side of the hopper, is used to control the rotation of the receiving component.

[0010] Optionally, in the automatic tray loading and unloading device, the receiving component includes a support plate and a rotating shaft. One end of the support plate is fixed to the rotating shaft and can rotate with the rotating shaft. The other end of the support plate extends towards the center of the hopper. The support plate remains horizontal when not rotating.

[0011] Optionally, in the automatic tray loading and unloading device, the distance between the two rotating shafts is greater than the width of the tray, and when the two support plates are horizontal, the closest distance between the two support plates is less than the width of the tray.

[0012] Optionally, the automatic material handling device further includes a mounting base, which is fixed to the side wall of the hopper for mounting the receiving component, and an elastic element is connected between the mounting base and the support plate.

[0013] Optionally, in the automatic tray loading and unloading device, the control component includes a top block and a pushing component. One end of the top block is fixedly connected to the rotating shaft, and the other end is aligned with the pushing component. The pushing component is used to push one end of the top block so that the top block drives the rotating shaft to rotate.

[0014] Optionally, in the automatic tray loading and unloading device, the pushing component includes a cylinder and a push rod, wherein the cylinder is used to drive the push rod to reciprocate.

[0015] Optionally, in the automatic tray loading and unloading device, the lifting assembly further includes a motor and an electric cylinder, one end of the electric cylinder is connected to the base plate, and the motor is used to drive the electric cylinder to reciprocate in the vertical direction.

[0016] Optionally, the automatic tray loading and unloading device further includes a first sensor, which is used to sense whether there is a tray at the receiving position of the receiving component.

[0017] Optionally, in the automatic tray loading and unloading device, the first sensing element is a through-beam sensor, which is located on both sides of the hopper.

[0018] Optionally, the automatic tray loading and unloading device further includes a second sensor located above the first sensor. When the tray moves to the position of the second sensor, the receiving component rotates to receive the tray or rotates to detach from the tray.

[0019] The automatic tray loading and unloading device of this application adds a receiving component above the hopper, which works in conjunction with the control component to adjust the receiving angle of the receiving component, so that adjacent trays are placed into the hopper with a gap between them. This avoids the risk of chip damage caused by direct stacking, while also reducing the descent distance of the robotic arm and improving processing efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front structural diagram of the automatic material handling device provided in this embodiment;

[0022] Figure 2 This is a side cross-sectional view of the automatic material handling device provided in this embodiment;

[0023] Figure 3 This is a side view of the automatic material handling device provided in this embodiment;

[0024] Figure 4 This is a partially enlarged schematic diagram of the receiving component horizontally receiving the material tray in the automatic material tray receiving device provided in this embodiment;

[0025] Reference numerals in the attached drawings: 10-hopper; 11-pan; 1-support plate; 2-rotating shaft; 20-base plate; 22-motor; 23-electric cylinder; 32-pneumatic cylinder; 33-top rod; 34-top block; 40-mounting seat; 41-elastic element; 51-first sensing element; 52-second sensing element; 60-hopper door. Detailed Implementation

[0026] The automatic tray loading and unloading device proposed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the explanation of the embodiments of the present invention. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different proportions may be used in different drawings to illustrate different aspects.

[0027] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this utility model are used to distinguish similar objects in order to describe embodiments of the invention, and are not used to describe a specific order or sequence. It should be understood that such structures can be used interchangeably where appropriate. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0028] This embodiment provides an automatic tray loading and unloading device, including a hopper 10. The hopper 10 has a storage space inside for accommodating a certain number of trays 11. When the automatic tray loading and unloading device receives materials, the robot arm sequentially places the trays 11 loaded with chips above the hopper 10. The device can automatically place the trays 11 above the hopper 10 into the hopper 10 sequentially. When the automatic tray loading and unloading device supplies materials, all the trays are placed in the hopper 10. The device automatically moves the internal trays sequentially to the top of the hopper 10, and the robot arm sequentially picks up the trays 11 from the top of the hopper 10 and transfers them to the next workstation. The automatic tray loading and unloading device can maintain a gap between adjacent trays 11 and can automatically place the trays 11 with the gap above into the hopper 10 sequentially. It has a high degree of automation, effectively saves the time of loading and unloading trays in the hopper 10, and improves processing efficiency.

[0029] Furthermore, the automatic tray loading and unloading device provided in this embodiment includes a lifting assembly, which includes a base plate 20 that can move up and down within the hopper 10 to support the tray 11; it also includes a receiving assembly located on both sides above the hopper 10, which can be used to support the tray 11, supporting the hopper 11 above the interior of the hopper 10 and isolating it from the tray 11 inside the hopper 10. It also includes a control assembly located on one side of the hopper 10, used to control the rotation of the receiving assembly. The rotation of the receiving assembly causes a change in position, thereby altering its supporting effect on the tray 11. By cooperating with the receiving component and the control component, when the hopper 10 receives material, the tray 11 pauses briefly on the receiving component before being placed into the hopper 10, creating a gap between it and the tray 11 already stored in the hopper 10. Then, the lifting component moves upward to receive the upper tray 11 and then lowers to place the tray 11 into the hopper 10. This avoids direct contact between two sets of trays 11, which could cause damage due to direct squeezing between the two sets of trays 11. At the same time, the robot arm that picks up and puts up the tray 11 only needs to move above the receiving component to put down or remove the tray 11, without having to clamp the tray 11 and move it into the hopper 10. This reduces the robot arm's moving distance and accuracy, speeds up the storage or removal of trays, and improves processing efficiency.

[0030] like Figure 1 and Figure 2 As shown, the receiving component includes a support plate 1 and a rotating shaft 2. One end of the support plate 1 is fixed to the rotating shaft 2, and the other end (support end) of the support plate 1 extends towards the center of the hopper 1 and remains horizontal. Since the support plate 1 and the rotating shaft 2 are fixedly connected, the support plate 1 can rotate together with the rotating shaft 2. Figure 2This is a side cross-sectional view of the material tray 11 located on the support plate 1. Both support plates 1 remain horizontal, and the material tray 11 is located above the support plates 1. When the support plates 1 remain horizontal, the rotating shaft 2 cannot rotate inward. When a certain external force is present, the rotating shaft 2 and the support plates 1 rotate outward together. When the external force disappears or a reverse external force is present, the rotating shaft 2 and the support plates 1 rotate inward together, eventually maintaining a horizontal state.

[0031] Furthermore, the receiving components consist of two sets located on opposite sides of the hopper 10, symmetrically positioned at the same height, with the support plates 1 of both sets of receiving components on the same horizontal plane. To allow the tray 11 to pause above the hopper 10 and smoothly enter the hopper 10, the closest distance between the support plates 1 on both sides is less than the width of the tray 11, while the distance between the two rotating shafts 2 is greater than the width of the tray 11. When the support plates 1 rotate to a certain angle, the horizontal distance between the two sets of support plates 1 becomes greater than the width of the tray 11. The tray 11 can then smoothly enter the hopper 10 from above or move upwards from the hopper 10 via the lifting mechanism.

[0032] Since the structures of the two supporting components are symmetrical, the structure of one of the supporting components will be described. The rotating shaft 2 is cylindrical and located on the side wall of the upper opening of the hopper 10, arranged horizontally. One end of the support plate 1 is fixed to the rotating shaft, and the other end of the support plate 1 abuts against the upper opening of the hopper 10, extending inward from the outside of the side wall opening into the inside of the side wall of the hopper 10, resembling a "triangle". The upper surface of the "triangle" of the support plate 1 remains horizontal when it abuts against the hopper 10, forming a stable horizontal support surface. The support plate 1 can rotate together with the rotating shaft 2 as the axis. In this embodiment, the support plate 1 can only rotate outward, opening like a gripper. The rotation and opening of the support plate 1 is to release the upper space of the hopper 10, allowing the material tray 11 to enter the hopper 10. Of course, the support plate 1 can release space not only by rotating outward. In other embodiments, the support plate can also release the upper space of the hopper 10 by rotating inward or extending and retracting. No specific limitation is made here.

[0033] Furthermore, the automatic material handling device also includes mounting bases 40, which are multiple sets respectively fixed to the two side walls of the hopper 10 for mounting the receiving components. The mounting base 40 has an opening, the diameter of which is not less than the diameter of the rotating shaft 2. The rotating shaft 2 passes laterally through the opening, remaining horizontal, and at least one end extends outward from the opening. The extended portion is connected to a control component, which controls the rotation of the rotating shaft 2. A support plate 1 is installed inside the mounting base 40, one end of which is fixedly connected to the rotating shaft 2, and the other end abuts against the upper side wall of the hopper 10. That is, the rotating shaft 2 and the support plate 1 can move together within the mounting base 40.

[0034] An elastic element 41 connects the mounting base 40 and the support plate 1. The elastic element 41 exerts a force between the mounting base 40 and the support plate 1. When no external force is present, the support plate 1 remains in contact with the upper side wall of the hopper 10, maintaining a horizontal support surface. When an external force is present, the support plate 1 rotates around the pivot 2, opening at a certain angle. At this time, the elastic element is compressed, generating a certain reverse force. After the external force disappears, the elastic element 41 rotates the support plate 1 back to the horizontal position. A space is left between the support plate 1 and the mounting base 40, allowing the support plate 1 to rotate and move within the mounting base 40. The position of the elastic element 41 can be set in different locations depending on the structure. In this embodiment, the elastic element 41 is horizontally positioned between the mounting base 40 and the support plate 1, on the side of the support plate 1 furthest from the center of the hopper 10. Under the action of an external force, the support plate 1 rotates away from the center of the hopper 10, thus compressing the elastic element 41. When the external force disappears, the reverse elastic force of the elastic element 41 rotates the support plate 1 back to the horizontal position. In other embodiments, the elastic element 41 can be vertically disposed between the support plate 1 and the mounting base 40, located on the side of the support plate 1 closer to the hopper 10. When the support plate 1 abuts against the side wall of the hopper 10, the elastic element 41 is in an extended state, forming a tensile force between the support plate 1 and the mounting base 40, holding the support plate 1 against the horizontal position above the side wall of the hopper 10. When an external force is present, the support plate 1 rotates outward, and the elastic element 41 is stretched again. When the external force disappears, the elastic force pulls the support plate 1 back to the horizontal position. The elastic element 41 is a spring.

[0035] The lifting assembly is located below the hopper 10. The lifting assembly includes a base plate 20, which is located at the bottom of the hopper 10 and can move up and down within the hopper 10 to support the material tray 11. The lifting assembly also includes a motor 22 and an electric cylinder 23. The motor 22 is located below the hopper 10 and controls the lifting and lowering of the electric cylinder 23. One end of the electric cylinder 23 is connected to the base plate 20. The motor 22 controls the electric cylinder 23 to drive the base plate 20 to reciprocate vertically within the hopper 10. When the hopper 10 is receiving material, the material tray 11 is placed on the receiving assembly. The motor 22 receives a signal and controls the base plate 20 to rise within the hopper 10 until the base plate 20 contacts the lower end of the material tray 11 on the receiving assembly, thus supporting the material tray 11. In one embodiment, when the base plate 20 rises within the hopper 10, it first contacts the support plate 1. After contacting the support plate 1, the motor 22 controls the base plate 20 to continue rising, while the support plates 1 on both sides rotate outwards respectively. The material tray 11 also moves slightly upwards until the material tray 11 detaches from the support plate 1 and is completely supported by the base plate 20. The control component controls the rotating shaft 2 to rotate at a certain angle and open, releasing the space above the hopper 10. Subsequently, the motor 22 controls the electric cylinder 23 to move downwards, and the material tray 11, located on the base plate 20, moves downwards with the base plate 20 into the hopper 10, completing the storage of the material tray 11. In another embodiment, when the base plate 20 rises in the hopper 10, it only contacts the lower end of the tray 11. After contacting the tray 11, the motor 22 controls the base plate 20 to continue rising until it rises to the point where the support plate 1 opens and no longer contacts the tray 11. The control component controls the rotating shaft 2 to rotate and open the support plates 1 on both sides at a certain angle to release the upper space of the hopper 10. The motor 22 then controls the base plate 20 to descend, and the base plate 20 supports the tray 11 as it descends into the hopper 10 to complete the material collection.

[0036] like Figure 3As shown, the control components consist of two sets located on one of the outer side walls of the hopper 10. These two sets of control components are arranged adjacently and are used to control the rotation of the receiving components on both sides. Each control component includes a top block 34 and a pushing component. One end of the top block 34 is fixedly connected to the rotating shaft 2, and the other end of the top block 34 is aligned with the pushing component. The pushing component pushes one end of the top block 34, causing the top block 34 to drive the rotating shaft 2 to rotate. In this embodiment, the pushing component is located below the top block 34. The pushing component can move up and down to push the top block 34, causing the top block 34 to rotate upwards around the rotating shaft 2, thereby causing the support plate 1 to rotate and open. In other words, the linear motion of the top block 34 pushed by the pushing component can be converted into the rotational motion of the support plate 1. The rotation angle of the support plate 1 can be adjusted by setting the distance the pushing component pushes the top block 34, and the rotation speed of the support plate 1 can be controlled by setting the speed at which the pushing component pushes the top block 34. After the top block 34 is lifted by the pushing component, the base plate 20 can support the material tray 11 to descend and place the material tray 11 into the hopper 10 or move the material tray 11 upward from the hopper 10, thus completing the recycling or removal of the material tray 11. The positional relationship between the top block 34 and the pushing component is not limited to the vertical direction, and the pushing component is not limited to being below the top block 34, as long as the movement of the pushing component can drive the top block 34 to move. If the pushing component is located above the top block 34, a magnetic device can be provided between the pushing component and the top block 34. The opening and closing of the magnetic device can be controlled by a switch to control the movement of the top block 34.

[0037] Furthermore, the pushing assembly includes a cylinder 32 and a push rod 33. Taking the pushing assembly located below the top block 34 as an example, the push rod 33 reciprocates vertically under the action of the cylinder 32. The extended end of the push rod 33 is aligned with the top block 34. The cylinder 32 controls the push rod 33 to move upward and contact the top block 34, lifting the top block 34. The lifting of the top block 34 drives the rotating shaft 2 and the support plate 1 to rotate and open. When the cylinder 32 controls the push rod 33 to move downward, the top block 34 rotates in the opposite direction around the rotating shaft 2 due to gravity, returning to its initial position, and the support plate 1 returns to a horizontal position. When the control assembly receives a signal, both sets of control assemblies start simultaneously to ensure that the support height of the support plates 1 on both sides remains consistent.

[0038] The automatic tray loading and unloading device further includes a first sensor 51. The first sensor 51 is used to sense whether a tray 11 is placed on the support plate 1 when it is in a horizontal state. When the hopper 10 is receiving material, the first sensor 51 senses that there is a tray 11 on the support plate 1, and the motor 22 controls the electric cylinder 23 to move upward. The bottom plate 20 then moves upward in the hopper 10 until it contacts the tray 11 or the bottom of the support plate 1. The bottom plate 20 continues to rise until it moves to the position sensed by the second sensor 52 and sends a sensing signal. After receiving the signal from the second sensor 52, the motor 22 controls the electric cylinder 23 to stop moving. In this embodiment, the first sensor 51 is a through-beam sensor. The through-beam sensors are two sets located on both sides of the hopper 10, at opposite horizontal positions when the tray 11 is placed horizontally on the support plate 1. When a material tray 11 is placed on the support plate 1, the material tray 11 is exactly at the transmission position of the two sets of through-beam sensors. After the through-beam sensors detect that there is a material tray 11 on the support plate 1, they send out a first signal. After the system receives the first signal from the first sensor 51, the motor 22 starts running until it receives the second signal and stops running. After the control component receives the second signal, it pushes the component to lift the top block 34, controls the support plate 1 to remain open, and controls the bottom plate 20 to move downward to move the material tray 11 into the hopper 10. When the hopper 10 is feeding material, the control component keeps the support plate 1 open at all times. The hopper door 60 is opened, and a stack of trays 11 is placed into the hopper 10. The motor 22 controls the electric cylinder 23 to rise, and the base plate 20 lifts the entire stack of trays 11. Because the support plate 1 is fully open, the trays 11 can be directly removed from the hopper 10. When the base plate 20 lifts the trays 11 and rises until the first sensor 51 is at a horizontal position, the first sensor 51 senses the presence of a tray 11 at this position and sends a sensing signal. The system receives the signal and controls the motor 22 to stop running. When the upper tray 11 moves to a position parallel to the first sensor 54, the robot moves above the tray 11 to pick up the tray 11 and move it to the next processing station. When the upper tray 11 is removed, the first sensor 51 loses its sensing signal, and the control motor runs again, controlling the base plate 20 to rise until the next tray 11 moves to a position parallel to the first sensor 51. The first sensor 51 generates a sensing signal again, controlling the motor to stop running and moving the second tray 11 to the receiving position. The robot then picks up the tray, and so on, continuously feeding the tray 11.

[0039] The second sensor 52 is located above the first sensor 51. When the hopper 10 receives material, the bottom plate 20 continues to move upward after contacting the tray 11. When it reaches the position of the second sensor 52, the bottom plate 20 stops moving upward. At this time, the support plate 1 rotates to just receive the tray 11 or rotates to detach from the tray 11. After the second sensor 52 senses the signal, the motor 22 stops running and pushes the component to receive the second signal and move the top rod 33 upward to lift the top block 34. The top block 34 rotates with the rotating shaft 2 as the axis, further opening and fixing the support plate 1. By calculating the rotation speed and rotation angle of the support plate 1, when the support plate 1 rotates to completely detach from the tray 11, the motor 22 controls the bottom plate 20 to move downward, moving the tray 11 into the hopper 10, completing the recycling of the tray 11. During the descent and retraction of the material tray 11, it will pass through the first sensor 51 again, and the system will receive the first sensing signal again. As the base plate 20 descends, the first sensing signal disappears after the material tray 11 passes through the first sensor 51, indicating that the material tray 11 has entered the material bin 10. At this point, the push rod 33 of the pushing component can be controlled to descend, the top block 34 returns to its initial position, and the support plate 1 returns to a horizontal state under the action of the elastic element. The second sensor 52 can be a through-beam sensor or other sensing device.

[0040] Through the cooperation of two sensors, a receiving component, a lifting component, and a control component, the material tray 11 is first picked up by a robotic arm and placed above the material bin 10 before being placed into the bin 10. The device automatically places the material tray 11 into the bin 10. Adjacent material trays 11 are automatically isolated to prevent the upper material tray 11 from directly pressing onto the material tray 11 inside the bin 10. This reduces the positional accuracy required when the robotic arm places the material tray 11 and prevents the lower material tray 11 from being squeezed by the upper material tray 11, which could damage the chips inside. At the same time, it reduces the descent path of the robotic arm. There is no need to lower the robotic arm into the bin 10. The robotic arm only needs to pick up the material tray 11, move it above the bin 10, place the material tray 11 on the receiving component, and then return to pick up the next set of material trays 11. This reduces the movement time of the robotic arm and effectively improves the overall processing efficiency.

[0041] The hopper door 60 is located on one side of the hopper 10, and the entire material tray can be loaded or unloaded through the hopper door 60.

[0042] The automatic material receiving process of the automatic tray receiving and discharging device is described below. When the hopper 10 is waiting for material, the upper surface of the support plate 1 is in a horizontal state. The robot arm moves the tray 11 from the previous station to above the hopper 10. After the robot arm reaches its position, it begins to place the tray 11 into the hopper 10. At this time, the support plate 1 is in a horizontal state, and the tray 11 is lowered until it falls onto the horizontal surface of the support plate 1. Figure 4As shown, at this time, the first sensor 51 senses the presence of material, the motor 22 of the hopper 10 starts, and the control cylinder 23 drives the bottom plate 20 to rise. The bottom plate 20 continues to rise until it reaches the material tray 11. After reaching the material tray 11, the bottom plate 20 continues to rise. Since the support plate 1 is connected to the mounting base 40 by the elastic element 41, the support plate 1 is gradually opened during the rise of the bottom plate 20, and the material tray 11 moves upward until it is sensed by the second sensor 52, at which point the bottom plate 20 stops rising. The system receives the signal from the second sensor 52 and starts the control component. The cylinder 32 drives the top rod 33 to lift the rotating shaft 2, thereby fully opening the support plate 310 fixed to the rotating shaft 2. Subsequently, the bottom plate 20 moves downward until the material tray 11 is fully entered into the hopper 10, and then stops descending, completing the process of receiving the material tray.

[0043] The automatic feeding process of the automatic tray picking and placing device is described as follows: The hopper door 60 is opened, and a manual or robotic arm places a stack of trays onto the base plate 20 of the hopper 10. The hopper door 60 is then closed. The motor 22 controls the electric cylinder 23 to drive the base plate 20 to rise. During feeding, the control component keeps the top rod 32 raised, and the support plate 1 remains open. When the first sensor 51 senses the rising tray 11, the base plate 20 stops rising. After the tray picking and placing robotic arm moves above the tray 11... The material tray 11 is removed and sent to the next processing station; when the first sensor 51 loses its sensing, the motor 22 controls the base plate 20 to rise again until the first sensor 51 senses the rising material tray 11. The motor 22 then controls the base plate 20 to stop rising, and the robot moves to the top of the material tray 11 again, removes the top material tray 11 and sends it to the next processing station. This continues until all the material trays in a stack are removed from the hopper 10. The motor 22 then controls the base plate 10 to descend to the bottom, opens the hopper door 60, and puts the material trays back in.

[0044] The present invention provides an automatic material tray loading and unloading device, which has the characteristics of simple structure and small space occupation. By setting a receiving component above the hopper 10, the material tray 11 is supported above the hopper. The opening and closing angle of the support member 310 cooperates with the control component to vertically place the material tray 11 into the hopper 10 or remove the material tray 11 from the hopper 10 in sequence, thus completing the material loading and feeding process.

[0045] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0046] The above provides a detailed description of an automatic tray loading and unloading device provided in the embodiments of this application, and uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An automatic material tray loading and unloading device, characterized in that, include: A hopper is used to store material trays; A lifting assembly, comprising a base plate that can move up and down within the hopper to support the material tray; A receiving component, located on both sides above the hopper, is used to receive the material tray; A control component, located on one side of the hopper, is used to control the rotation of the receiving component.

2. The automatic material handling device according to claim 1, characterized in that: The receiving component includes a support plate and a rotating shaft. One end of the support plate is fixed to the rotating shaft and can rotate with the rotating shaft. The other end of the support plate extends towards the center of the hopper. The support plate remains horizontal when it is not rotating.

3. The automatic material handling device according to claim 2, characterized in that: The distance between the two rotating shafts is greater than the width of the tray. When the two support plates are horizontal, the closest distance between the two support plates is less than the width of the tray.

4. The automatic material handling device according to claim 2, characterized in that: It also includes a mounting base, which is fixed to the side wall of the silo for mounting the receiving component, and an elastic element is connected between the mounting base and the support plate.

5. The automatic material handling device according to claim 2, characterized in that: The control component includes a top block and a pusher component. One end of the top block is fixedly connected to the rotating shaft, and the other end is aligned with the pusher component. The pusher component is used to push one end of the top block so that the top block drives the rotating shaft to rotate.

6. The automatic material handling device according to claim 5, characterized in that: The pushing assembly includes a cylinder and a push rod, the cylinder being used to drive the push rod to reciprocate.

7. The automatic material handling device according to claim 1, characterized in that: The lifting assembly also includes a motor and an electric cylinder. One end of the electric cylinder is connected to the base plate, and the motor is used to drive the electric cylinder to reciprocate in the vertical direction.

8. The automatic material handling device according to claim 1, characterized in that: It also includes a first sensor, which is used to sense whether there is a material tray at the receiving position of the receiving component.

9. The automatic material handling device according to claim 8, characterized in that: The first sensing element is a through-beam sensor, which is located on both sides of the hopper.

10. The automatic material handling device according to claim 8, characterized in that: It also includes a second sensor located above the first sensor. When the tray moves to the position of the second sensor, the receiving component rotates to receive the tray or rotates to detach from the tray.

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