A base feeding and discharging device

By designing a base loading and unloading device and using vacuum suction cup clamps to automate the transfer of the base and tray, the problem of manual operation in the wine bottle packaging process is solved, improving efficiency and environmental cleanliness.

CN224336633UActive Publication Date: 2026-06-09YIBIN PUSH ASSET MANAGEMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YIBIN PUSH ASSET MANAGEMENT CO LTD
Filing Date
2025-08-19
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing technologies, the loading and unloading of the base during the wine bottle packaging process requires manual operation, resulting in high labor intensity and an unorganized packaging environment.

Method used

Design a base loading and unloading device, including a loading conveyor, an unloading conveyor, a discharging conveyor and a robotic arm, and use a vacuum suction cup clamp to realize the automated transfer and recycling of bases and pallets.

Benefits of technology

It enables automatic feeding of the base and automatic unloading of the pallet, reducing the labor intensity of workers, improving packaging efficiency, and making the packaging environment orderly.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a base feeding and discharging device relates to automatic feeding technical field, including feeding conveyor, discharging conveyor, discharge conveyor and machine arm, and feeding conveyor is used for conveying the tray with base, and discharging conveyor is used for collecting and outputting the tray, and discharge conveyor is used for conveying base to packaging station, and the output end of mechanical arm is equipped with the clamp that can clamp base and tray. The utility model not only can take out base in the tray in the racking state and transfer to the packaging station, but also can recycle the tray, make the whole packaging environment well-ordered.
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Description

Technical Field

[0001] This utility model relates to the field of automatic feeding technology, and more specifically, to a base loading and unloading device. Background Technology

[0002] Wine bottle packaging boxes serve as an important form of packaging for protecting and displaying wine bottles, and are widely used in the sales and transportation of alcoholic beverages. The design of wine bottle packaging boxes must not only consider aesthetics and practicality, but also the convenience and safety for users during use.

[0003] Current wine packaging boxes typically consist of a box body, a base, and clips / structures. During bottle packaging, the base is installed at the bottom of the box, supporting the bottle and limiting its position at the bottom. The clips / structures are located at the top or neck of the bottle, limiting its upper portion. This packaging method not only keeps the bottle in a fixed position within the box but also creates a gap between the bottle and the box's inner wall, effectively protecting the bottle during transport. However, during the bottle packaging process, the base supplier usually places it on a pallet, which is then stacked and provided to the manufacturer. Therefore, the manufacturer must manually remove the pallets and then take the bottle holders from the pallets to place them on the packaging production line.

[0004] Therefore, there is an urgent need for a loading and unloading device that can replace manual labor in removing the base from the pallet and placing it on the packaging production line. Utility Model Content

[0005] The purpose of this utility model is to provide a base loading and unloading device, which can not only remove the base from the pallet in the stacked state and transfer it to the packaging station, but also recycle the pallet, making the entire packaging environment orderly.

[0006] To achieve the purpose of this utility model, the technical solution adopted is: a base loading and unloading device, comprising:

[0007] A feeding conveyor, used to transport pallets with bases attached;

[0008] A material conveyor for collecting and outputting pallets;

[0009] The discharge conveyor is used to transport the base to the packaging station;

[0010] The robotic arm has a gripper at its output end that can grasp the base and the tray.

[0011] Furthermore, the fixture includes a fixed plate that is fixedly installed at the output end of the robotic arm, and the fixed plate is also equipped with multiple sets of vacuum suction cups that correspond one-to-one with multiple bases on the tray.

[0012] Furthermore, the two vacuum suction cups on the fixed plate are a group, and the two vacuum suction cups in the same group are arranged symmetrically with respect to the center of the base.

[0013] Furthermore, the feeding conveyor and the unloading conveyor are located on the same side of the discharge conveyor, and the robotic arm is installed between the feeding conveyor and the unloading conveyor.

[0014] Furthermore, both the feeding conveyor and the unloading conveyor are roller conveyors, and multiple detection sensors arranged at intervals along their conveying direction are installed on one side of the feeding conveyor and one side of the unloading conveyor.

[0015] Furthermore, the discharge conveyor is a belt conveyor.

[0016] Furthermore, baffles are installed on both the end face of the output end of the feeding conveyor and on both sides of the output end of the feeding conveyor.

[0017] Furthermore, guide plates extending to baffles are installed on both sides of the input end of the feeding conveyor, and the ends of the two guide plates away from baffles have guide slopes that gradually slope outward.

[0018] Furthermore, baffles are installed on both sides of the input end of the unloading conveyor and the input end of the loading conveyor, with the upper ends of the baffles bending outward.

[0019] Furthermore, corresponding telescopic rods are installed on both sides of the feeding conveyor. Limiting baffles are installed at the output ends of both telescopic rods, and the distance between the limiting baffles and the baffles on the input end face of the feeding conveyor is adapted to the size of the pallet.

[0020] Furthermore, guide plates are installed on both sides of the feeding conveyor, and the two guide plates have a gradually inwardly inclined guide slope at the end near the baffle plate.

[0021] Furthermore, the output end of the feeding conveyor is also equipped with a limiting block to restrict the output of the pallet.

[0022] Furthermore, there are multiple discharge conveyors, which are connected in sequence. A rotatable conveyor shaft is also supported between the output end of the previous discharge conveyor and the input end of the next discharge conveyor. The conveyor shaft is connected to the previous or the next discharge conveyor in a driving connection.

[0023] The beneficial effects of this utility model are:

[0024] By cooperating with the feeding conveyor, unloading conveyor, discharge conveyor and robotic arm, the system allows workers to simply place pallets with bases on the feeding conveyor. The rolling conveyor then transfers the pallets to its output end. At this point, the grippers on the robotic arm first pick up the bases from the pallets and transfer them to the discharge conveyor. Then, the grippers on the robotic arm pick up the pallets and transfer them to the unloading conveyor. This achieves automatic base feeding and automatic pallet unloading, which not only reduces the labor intensity of workers but also improves the efficiency of base feeding, making the entire packaging environment orderly. Attached Figure Description

[0025] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0026] Figure 1 This is a structural diagram of the base loading and unloading device;

[0027] Figure 2 This is a structural diagram of the feeding conveyor;

[0028] Figure 3 This is a structural diagram of the fixture;

[0029] Figure 4 This is a structural diagram of the discharge conveyor;

[0030] Figure 5 This is a structural diagram of the material feeding conveyor.

[0031] The attached diagram shows the markings and corresponding component names:

[0032] 1. Feeding conveyor; 2. Unloading conveyor; 3. Discharge conveyor; 4. Robotic arm; 5. Gripper; 6. Conveyor shaft;

[0033] 11. Baffle 1; 12. Guide plate 1; 13. Guide ramp 1; 14. Detection sensor;

[0034] 21. Second baffle; 22. Second guide plate; 23. Second guide ramp; 24. Telescopic rod; 25. Limiting baffle; 26. Limiting block;

[0035] 51. Fixing plate; 52. Vacuum suction cup. Detailed Implementation

[0036] 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 for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0037] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figures 1 to 5 As shown, the present invention provides a base loading and unloading device, including a loading conveyor 1, a unloading conveyor 2, a discharging conveyor 3, and a robotic arm 4; wherein, the loading conveyor 1 is used to carry pallets in a stacked state and equipped with bases, and to transport the stacked pallets equipped with bases to the output end of the loading conveyor 1; the unloading conveyor 2 is used to collect and stack the pallets, and to transport the collected and stacked pallets to the output end of the unloading conveyor 2; the discharging conveyor 3 is used to transport the bases removed from the pallets, so that the pallets are transferred to the subsequent packaging station; the robotic arm 4 is used to transfer the pallets and bases, and to stack the transferred pallets on the unloading conveyor 2 in a stacking manner.

[0039] To ensure the transfer of the base and the pallet, the output end of the robotic arm 4 is also equipped with a clamp 5. The clamp 5 can not only clamp the pallet, but also the base, and place the clamped pallet or base on the unloading conveyor 2 or the unloading conveyor 3.

[0040] By using the base loading and unloading device provided by this utility model, not only can the base be removed from the pallet in the stacked state and transferred to the packaging station, but the pallet can also be stacked and recycled, reducing the labor intensity of workers and making the entire packaging environment orderly.

[0041] In this invention, to ensure the gripping of the base and the tray, such as Figure 3 As shown, the clamp 5 includes a fixed plate 51 fixedly mounted on the output end of the robotic arm 4, and multiple sets of vacuum suction cups 52 are fixed on the fixed plate 51. The arrangement of the multiple sets of vacuum suction cups 52 on the fixed plate 51 is the same as the arrangement of the multiple bases in the tray, so that when the clamp 5 needs to clamp and transfer multiple bases in the tray, the multiple sets of vacuum suction cups 52 can correspond one-to-one with the multiple bases in the tray, so that the multiple bases in the tray can be transferred at one time. In this utility model, in order to reduce the weight of the clamp 5, the fixed plate 51 can also be a frame structure.

[0042] Since the base installed in the box to limit and lift the lower end of the bottle is generally rectangular in shape, and has a groove to accommodate the bottom of the bottle, the clamp 5 can be designed with two vacuum suction cups 52 in the same group. When the two vacuum suction cups 52 in the same group are picking up the base, they are arranged symmetrically around the center of the base. Of course, in this invention, each base can also correspond to only one vacuum suction cup 52, and the number of vacuum suction cups 52 in the same group can be one; each base can also correspond to four vacuum suction cups 52, in which case the four vacuum suction cups 52 can be arranged in a ring array around the center of the base. Therefore, in this invention, the number of vacuum suction cups 52 in the same group can be adjusted according to the actual situation.

[0043] To facilitate the transfer of the base and pallet by the robotic arm 4, the loading conveyor 1 and unloading conveyor 2 can be arranged on the same side of the unloading conveyor 3, with the robotic arm 4 positioned between them. This makes the transfer distance of the pallet and base via the robotic arm 4 more reasonable, and the transfer of the pallet and base more convenient and faster. Additionally, to increase the installation height of the robotic arm 4, a support can be installed on the ground, and the robotic arm 4 can be mounted on the support.

[0044] In this utility model, such as Figure 2 , Figure 5 As shown, both the feeding conveyor 1 and the unloading conveyor 2 are roller conveyors, providing sufficient support for the pallets in a stacked state for their support and transfer. To detect whether there are stacked pallets on the feeding conveyor 1 and the unloading conveyor 2, multiple detection sensors 14 are installed on one side of the feeding conveyor 1 and the unloading conveyor 2, and these sensors 14 are evenly spaced along the axial direction of the feeding conveyor 1 and the unloading conveyor 2, thereby detecting whether the pallets in a stacked state with bases on the feeding conveyor 1 are saturated, and detecting whether the pallets in a stacked state on the unloading conveyor 2 are excessively piled up. To ensure the feeding of bases and the unloading of pallets, a detection sensor 14 is located on the outside of the feeding station where the clamp 5 picks up the bases or pallets at the output end of the feeding conveyor 1; to prevent the pallets in a stacked state from overflowing the unloading conveyor 2 after unloading, a detection sensor 14 is located on the outside of the output end of the unloading conveyor 2. In this invention, the detection sensor 14 is an infrared sensor, a common type of sensor used on conveyors, which will not be described in detail here. In this invention, a belt conveyor is used for material output, thus meeting the long-distance conveying requirements of the base.

[0045] To prevent pallets with bases in a stacked state from being directly discharged from the output end of the feeding conveyor 1 during transportation, such as... Figure 2As shown, baffles 11 are installed on both sides of the output end of the feeding conveyor 1. When a pallet with a base in a stacked state enters the output end of the feeding conveyor 1, the three baffles 11 work together to limit the position of the pallet, thereby restricting the position of the base or pallet to be gripped. This facilitates the precise gripping of the base or pallet by the clamp 5, making the transfer of the base and pallet more accurate. Since a detection sensor 14 needs to be installed at the output end of the feeding conveyor 1, a notch is provided on the baffle 11 at the position corresponding to the detection sensor 14 to avoid the baffle 11 blocking the detection sensor 14. This allows the detection sensor 14 to detect whether a pallet with a base in a stacked state is present at the output end of the feeding conveyor 1, thereby further controlling the conveying or stopping of the feeding conveyor 1.

[0046] To ensure that pallets with bases, stacked on the feeding conveyor 1, can be accurately conveyed into the feeding station formed by the three baffles 11, guide plates 12 are installed on both sides of the input end of the feeding conveyor 1. The axis of the guide plates 12 is consistent with the conveying direction of the feeding conveyor 1, and the ends of the two guide plates 12 near the feeding station are respectively connected to the baffles 11 on both sides of the output end of the feeding conveyor 1. In order to allow the pallets with bases to smoothly enter between the two guide plates 12, the ends of the two guide plates 12 away from the baffles 11 have guide slopes 13 that gradually tilt outward while extending to the input end of the feeding conveyor 1, so that the conveying channel formed between the two guide plates 22 has a funnel-shaped inlet end, so that the pallets with bases can smoothly enter the conveying channel and enter the feeding station through the conveying channel.

[0047] To prevent the pallets transferred from robotic arm 4 to unloading conveyor 2 from shifting during the stacking process, such as... Figure 5 As shown, baffles 21 are installed on both sides of the input end of the unloading conveyor 2 and the input end of the loading conveyor 1. The three baffles 21 work together to form an unloading station at the output end of the unloading conveyor 2. The dimensions of the three sides of the unloading station corresponding to the three baffles 21 are adapted to the dimensions of three sides of the pallet. At this time, one side of the unloading station is open, so that when the pallet is transferred to the unloading station by the robotic arm 4 and stacked, the three sides of the pallet can be restricted by the baffles 21, which facilitates the stacking of the pallet. In order to ensure that the pallet can accurately enter the unloading station during the transfer by the robotic arm 4, the upper end of the baffles 21 can be bent outward at a certain angle, so that the opening size of the upper end of the unloading station formed by the three baffles 21 is larger than the opening size of the lower end. This not only makes it easier for the pallet to enter the unloading station smoothly, but also makes it easier to stack the pallet after it is placed in the unloading station due to the restricted position.

[0048] Furthermore, in order to prevent the pallets from shifting at the output end of the feeding conveyor 2 during the stacking process, corresponding telescopic rods 24 are installed on both sides of the feeding conveyor 2. The output ends of the telescopic rods 24 can extend to the center of the feeding conveyor 2, and the output ends of both telescopic rods 24 are equipped with limit baffles 25, which are parallel to the baffle 21 on the end face of the output end of the feeding conveyor 2. When the telescopic rod 24 extends, the two limiting baffles 25 and the three baffles 21 work together to restrict the material unloading station in four directions. At this time, the size of the material unloading station corresponds to the size of the pallet, so that after the pallet is placed in the material unloading station, the pallet is restricted on all four sides, thereby effectively preventing the pallet from shifting in the material unloading station and ensuring that the pallet is accurately aligned during the stacking process. When the telescopic rod 24 retracts, the telescopic rod 24 drives the limiting baffles 25 to retract synchronously. The limiting baffles 25 lose their restriction on the pallet, making the side of the material unloading station near the output end of the material unloading conveyor 2 open. The pallets stacked in the material unloading station can be moved out of the material unloading station by the operation of the material unloading conveyor 2. In this utility model, the telescopic rod 24 can be selected from one of the following: a pneumatic cylinder, a hydraulic cylinder, or an electronic telescopic rod 24.

[0049] Furthermore, in order to ensure that the pallets being stacked can be smoothly transported to the output end of the unloading conveyor 2, guide plates 22 are installed on both sides of the unloading conveyor 2. The axial direction of the guide plates 22 is consistent with the conveying direction of the unloading conveyor 2, and one end of each guide plate 22 corresponds to the baffle 21 located on both sides of the unloading conveyor 2. However, in order to avoid the guide plates 22 from obstructing the movement of the limiting baffle 25, the guide plates 22 should avoid the limiting baffle 25 when they are set. At the same time, the end of the guide plate 22 near the baffle 21 has a guide slope 23 that gradually tilts outward as it extends to the unloading station. This makes the width of the inlet end of the conveying channel formed between the two guide plates 22 greater than the width of its outlet end, making the inlet end of the conveying channel funnel-shaped. This allows the pallets at the unloading station to smoothly enter the conveying channel and proceed along the conveying channel to the output end of the unloading conveyor 2.

[0050] To prevent pallets stacked on the unloading conveyor 2 from being directly sent out from the output end of the unloading conveyor 2 during the conveying process, causing the stacked pallets to fall off the unloading conveyor 2, a limit block 26 is also installed at the output end of the unloading conveyor 2. The limit block 26 is L-shaped, with one end aligned with the axis of the unloading conveyor 2 and the other end extending to the central axis of the unloading conveyor 2. This allows the stacked pallets to be restrained by the limit block 26 when they are transferred to the output end of the unloading conveyor 2, preventing the stacked pallets from being directly sent out from the output end of the unloading conveyor 2, and also facilitating the subsequent transfer of the stacked pallets.

[0051] In this utility model, such as Figure 4 As shown, there are multiple discharge conveyors 3, which are sequentially connected and their conveying surfaces are on the same plane. A rotatable conveyor shaft 6 is supported between the output end of one discharge conveyor 3 and the input end of the next. To facilitate the installation of the conveyor shaft 6, the frame of either the previous or next discharge conveyor 3 can be slightly extended, and both ends of the conveyor shaft 6 can be mounted on the extended end of the frame via bearings. To drive the conveyor shaft 6, one end can be connected to the power mechanism of either the previous or next discharge conveyor 3 via chain drive, eliminating the need for an additional transmission mechanism. By placing the conveyor shaft 6 between two discharge conveyors 3, the large gap between them prevents the base from being unable to smoothly transition from one discharge conveyor 3 to the next, thus ensuring the smooth conveying of the base.

[0052] In use, the staff will move the pallets in a stacked state with bases to the input end of the feeding conveyor 1. The feeding conveyor 1 will run, and the pallets in a stacked state with bases placed on the feeding conveyor 1 will enter the output end of the feeding conveyor 1 under the guidance of two guide plates 12. The pallets in a stacked state with bases entering the output end of the feeding conveyor 1 will be restricted by three baffles 11.

[0053] Next, the robotic arm 4 operates, bringing the fixed plate 51 and vacuum suction cup 52 above the feeding station at the output end of the feeding conveyor 1. The vacuum suction cup 52 is pressed against the base in the tray, and negative pressure is drawn into the vacuum suction cup 52. The vacuum suction cup 52 uses negative pressure to suck up the base in the tray. After the base is sucked up by the vacuum suction cup 52, the robotic arm transfers the fixed plate 51, vacuum suction cup 52 and the sucked base together to the conveying surface of the discharge conveyor 3. Then, air is blown into the vacuum suction cup 52, and the vacuum suction cup 52 releases its grip on the base. The base detaches from the vacuum suction cup 52 and is placed on the conveying surface of the discharge conveyor 3. The base is then transported to the subsequent packaging station by the operation of the discharge conveyor 3 and the rotation of the conveyor shaft 6.

[0054] Next, the telescopic rod 24 extends, and the telescopic rod 24 drives the limiting baffle 25 to move towards the central axis of the lower conveyor 2, so that the lowering station at the input end of the lower conveyor 2 is restricted by the baffle 21 and the limiting baffle 25. The robotic arm 4 operates, and the robotic arm 4 drives the fixed plate 51 and the vacuum suction cup 52 to enter above the upper feeding station at the output end of the upper feeding conveyor 1, so that the vacuum suction cup 52 is pressed against the tray. The vacuum suction cup 52 is drawn with negative pressure, and the vacuum suction cup 52 sucks up the tray through the negative pressure. After the tray is sucked up by the vacuum suction cup 52, the robotic arm transfers the fixed plate 51, the vacuum suction cup 52 and the sucked tray together to the lower feeding station of the lower conveyor 2. Then, air is blown into the vacuum suction cup 52, and the vacuum suction cup 52 releases its grip on the tray, thereby placing the tray in the lower feeding station. At this time, the tray is restricted by the baffle 21 and the limiting baffle 25, so that the tray will not have horizontal displacement at the upper feeding station.

[0055] Repeat the above steps to send the base on the pallet onto the conveying surface of the discharge conveyor 3. Repeat the above steps without moving the telescopic rod 24 to transfer the pallet to the top of the loading fixture at the output end of the loading conveyor 1. At this time, the robotic arm 4 moves to stack the pallet picked up by the vacuum suction cup 52 onto the original pallet at the loading station. When the pallet picked up by the vacuum suction cup 52 comes into contact with the original pallet at the loading station, air is blown into the vacuum suction cup 52, and the vacuum suction cup 52 releases its grip on the pallet, thereby placing the pallet on the original pallet at the unloading station.

[0056] During the above process, after all the pallets with bases in the stacked state at the loading station have been transferred by the robotic arm 4, the loading conveyor 1 starts running and transports the pallets with bases in the stacked state on the loading conveyor 1 to the input end of the loading conveyor 1, thereby continuing the transfer of pallets and bases.

[0057] During the above process, when the number of pallets in the unloading station reaches the preset number, the telescopic rod 24 retracts, and the telescopic rod 24 drives the limit baffle 25 to move backward, so that the side of the unloading station near the output end of the unloading conveyor 2 is open. Then the unloading conveyor 2 runs, and the unloading conveyor 2 transfers the pallets in the unloading station in a stacked manner to the output end of the unloading conveyor 2. During this process, the stacked pallets are guided into the output end of the unloading conveyor 2 by the two guide plates 22, and are blocked by the limit block 26 after entering the output end of the unloading conveyor 2. At this time, the staff can transfer the pallets located at the output end of the unloading conveyor 2.

[0058] In this invention, the vacuum suction cup 52 is connected to a vacuum generator via a piping system during use. The vacuum generator is connected to a vacuum pump, and the vacuum generator creates negative or positive pressure on the vacuum suction cup 52, thereby controlling the suction or release of the vacuum suction cup 52 onto the tray or base. This part of the structure is a direct use of existing technology and will not be described in detail here.

[0059] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A base loading and unloading device, characterized in that, include: Feeding conveyor (1), used to convey pallets with bases; A feeding conveyor (2) is used to collect and output pallets; The discharge conveyor (3) is used to transport the base to the packaging station; The robotic arm (4) has a gripper (5) installed at its output end, which can grip the base and the tray.

2. The base loading and unloading device according to claim 1, characterized in that, The clamp (5) includes a fixed plate (51) fixedly installed at the output end of the robotic arm (4), and the fixed plate (51) is also equipped with a number of vacuum suction cups (52) that correspond one-to-one with multiple bases on the tray.

3. The base loading and unloading device according to claim 2, characterized in that, The two vacuum suction cups (52) on the fixed plate (51) are a group, and the two vacuum suction cups (52) in the same group are arranged symmetrically with respect to the center of the base.

4. The base loading and unloading device according to claim 1, characterized in that, Both the feeding conveyor (1) and the unloading conveyor (2) are roller conveyors, and multiple detection sensors (14) are installed on one side of the feeding conveyor (1) and one side of the unloading conveyor (2) at intervals along their conveying direction.

5. The base loading and unloading device according to claim 1, characterized in that, Baffles (11) are installed on the end face of the output end of the feeding conveyor (1) and on both sides of the output end of the feeding conveyor (1).

6. The base loading and unloading device according to claim 5, characterized in that, The feeding conveyor (1) has guide plates (12) extending to the baffle (11) on both sides of its input end, and the two guide plates (12) have guide slopes (13) that gradually slope outward at the ends away from the baffle (11).

7. The base loading and unloading device according to claim 1, characterized in that, Both the end face of the input end of the unloading conveyor (2) and both sides of the input end of the loading conveyor (1) are equipped with baffles (21), and the upper ends of the multiple baffles (21) are bent outward.

8. The base loading and unloading device according to claim 7, characterized in that, The feeding conveyor (2) is also equipped with corresponding telescopic rods (24) on both sides. The output ends of the two telescopic rods (24) are equipped with limit baffles (25), and the distance between the limit baffles (25) and the baffles (21) on the input end face of the feeding conveyor (2) is adapted to the size of the tray.

9. The base loading and unloading device according to claim 7, characterized in that, The feeding conveyor (2) is equipped with guide plates (22) on both sides. The two guide plates (22) have a guide slope (23) that gradually slopes inward at the end near the baffle (21). The output end of the feeding conveyor (2) is also equipped with a limiting block (26) to restrict the output of the pallet.

10. The base loading and unloading device according to claim 1, characterized in that, There are multiple discharge conveyors (3), which are connected in sequence. A rotatable conveying shaft (6) is also supported between the output end of the previous discharge conveyor (3) and the input end of the next discharge conveyor (3). The conveying shaft (6) is connected to the previous discharge conveyor (3) or the next discharge conveyor (3) in a transmission connection.