Automatic stacking equipment for turnover baskets

Abstract

The invention relates to the technical field of turnover basket stacking, in particular to turnover basket automatic stacking equipment which comprises a rack and a bearing table arranged on the rack, a driving mechanism is arranged on the rack, and a clamping mechanism controlled by the driving mechanism to move and used for clamping turnover baskets is arranged above the bearing table. A vertical guide rail in sliding fit with the driving mechanism is arranged at the end, away from the bearing table, of the rack, a turnover basket height sensor is arranged on the rack, and a human body height sensor is arranged on the rack. Load-bearing deformation of the turnover basket is monitored in real time through the displacement sensor arranged in the air cylinder, comparison is carried out according to the preset light basket reference weight, so that whether the turnover basket is in the light basket state or the heavy basket state currently is accurately judged, data information is fed back to the electric cylinder control system and used for dynamically adjusting the needed clamping force, and the clamping efficiency is improved. Therefore, the clamping force required by the turnover basket is matched, and the perception capability and the intelligent decision-making level of the equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of turnover basket stacking technology, and more particularly to an automatic turnover basket stacking device. Background Technology

[0002] Turnover crates are plastic containers used in logistics warehousing to facilitate the handling and storage of goods. Stacking these crates can save space; lightweight crates reduce floor space when stacked, while heavy crates can be stacked stably to improve warehousing and transportation efficiency.

[0003] In current stacking operations, turnover crates are often involved in two states: light crates and heavy crates. The actual clamping forces required for the two are different. However, most existing stacking equipment can only provide a single clamping force or rely on manual intervention for adjustment, and cannot achieve automatic adaptation. In addition, some turnover crates may deform or crack due to long-term use. If the original clamping force is still used for operation, it is very easy to cause the clamping to be unstable, which will affect stacking safety and efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that most existing stacking devices in the prior art can only provide a single clamping force or rely on manual intervention for adjustment, and to propose an automatic stacking device for turnover baskets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic stacking device for turnover baskets includes a frame and a support platform mounted on the frame. The support platform is used to support turnover baskets. A drive mechanism is provided on the frame. A clamping mechanism, controlled by the drive mechanism and used to clamp the turnover baskets, is provided above the support platform. A vertical guide rail is provided at the end of the frame away from the support platform, which slides with the drive mechanism. A turnover basket height sensor is provided on the frame to detect the stacking height of the turnover baskets. A human height sensor is provided on the frame to detect the height of the personnel corresponding to the device. The preset height of the turnover basket height sensor corresponds to the preset height of the human height sensor. The drive mechanism and the clamping mechanism are both signal-connected to the turnover basket height sensor.

[0006] Preferably, a conveyor belt is provided on the support platform, and at least two position sensors are arranged at intervals along the conveying direction of the conveyor belt on the frame.

[0007] Preferably, a limit door is installed on the pin at the end of the frame away from the support platform.

[0008] Preferably, the drive mechanism includes: The mounting slot is vertically formed on the frame; A sliding groove is vertically formed on the frame. There are two sliding grooves, and the number of sliding grooves is equal to the number of mounting grooves. Each mounting groove and each sliding groove are located on the same side of the frame. A sliding block, wherein the sliding block is slidably installed in the sliding groove, and the number of sliding grooves is equal to the number of sliding blocks; A first motor is fixedly mounted on the top surface of the frame; A first lead screw is rotatably mounted on the mounting slot and is driven to rotate by the first motor. A first movable slider is mounted on the first lead screw. The first movable slider is slidably connected to the mounting groove. A nut corresponding to the first lead screw is embedded in the first movable slider. Two mounting brackets are fixedly connected between the sliding block and the first movable slider, and between the two sliding blocks on the same side, respectively, and the mounting brackets are horizontally arranged; The second motor is fixedly mounted on the mounting bracket; The second lead screw is rotatably mounted on the mounting bracket; The second movable slider is mounted on the second lead screw, and a nut corresponding to the second lead screw is embedded in the second movable slider.

[0009] Preferably, the second movable slider is fixedly connected to a guide block that slides with the vertical guide rail.

[0010] Preferably, the clamping mechanism includes: An electric cylinder, which is fixedly mounted on the second movable slider; A clamping plate, which is fixedly connected to the output end of the electric cylinder; A sponge layer, which is fixedly connected to the clamping plate; A rubber layer, which is attached to the sponge layer by Velcro; A first pressure sensor is fixedly installed at the center of the clamping plate. A storage groove for accommodating the first pressure sensor is provided at the center of the sponge layer. The vertical end face of the first pressure sensor away from the clamping plate is closer to the clamping plate than the vertical end face of the sponge layer away from the clamping plate. The first pressure sensor is connected to the electric cylinder signal. A reset spring is fixedly connected to the clamping plate, and a spring groove for receiving the reset spring is provided on the sponge layer; A guide post is fixedly connected to the end face of the rubber layer near the sponge layer, and the guide post is correspondingly arranged with the reset spring. An alarm is fixedly mounted on the bottom surface of the clamping plate and is connected to the first pressure sensor.

[0011] Preferably, the clamping plate has a connected mounting cavity and a movable cavity. The movable cavity is located above the mounting cavity. A second pressure sensor is fixedly installed in the mounting cavity and is connected to the alarm signal. A force-bearing rod is movably installed in the movable cavity. The top of the force-bearing rod has a hemispherical structure, and a connecting ring is fixedly connected to the force-bearing rod. A support spring is fixedly connected between the bottom of the mounting cavity and the bottom surface of the connecting ring.

[0012] Preferably, brackets are fixedly connected to both sides of the clamping plate, and cylinders are fixedly installed on the brackets. A longitudinal limiting rod that moves against the bottom surface of the upper edge of the turnover basket is fixedly connected to the output end of the cylinder, and a displacement sensor is installed on the cylinder.

[0013] Preferably, the height sensor of the turnover basket is an ultrasonic sensor.

[0014] Preferably, the human height sensor is a safety laser scanner.

[0015] Compared with the prior art, the present invention has the following advantages: 1. This invention uses a displacement sensor built into the cylinder to monitor the load-bearing deformation of the turnover basket in real time and compares it with the preset light basket benchmark weight to accurately determine whether the turnover basket is currently in a light basket or heavy basket state. This data information is fed back to the electric cylinder control system and used to dynamically adjust the required clamping force, thereby matching the clamping force required by the turnover basket, which helps to improve the equipment's perception capability and intelligent decision-making level.

[0016] 2. This invention monitors the height data of workers through a human height sensor, and then dynamically evaluates whether the stacking height of the turnover baskets is suitable for the operating conditions of each person, thereby ensuring the safety and convenience of handling operations. The turnover basket height sensor monitors the height of the turnover baskets in real time to avoid stacking the turnover baskets too high.

[0017] 3. This invention uses a first pressure sensor to monitor the pressure applied to the rubber layer by the turnover basket in real time, thereby determining the current load on the turnover basket. When the rubber layer is worn, the pressure signal change characteristics collected by the first pressure sensor will show significant differences when the electric cylinder performs the same movement stroke. After the difference occurs, the alarm will sound to remind the staff to replace the rubber layer.

[0018] 4. In the present invention, if the turnover basket is accidentally dropped during the clamping process, the bottom edge of its top surface will first contact the force-bearing rod below. After being impacted, the force-bearing rod moves downward, and the bottom surface of the force-bearing rod will first contact the second pressure sensor. After the second pressure sensor detects the change in pressure signal, the alarm will immediately issue a warning, thereby indicating to the staff that the current clamping state is abnormal. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an automatic stacking device for turnover baskets proposed in this invention; Figure 2 This is a schematic diagram of the clamping mechanism structure of an automatic stacking device for turnover baskets proposed in this invention; Figure 3 This is a schematic diagram of the clamping mechanism of an automatic stacking device for turnover baskets proposed in this invention when the rubber layer is not assembled; Figure 4 This is a schematic diagram of the rubber layer structure of an automatic stacking device for turnover baskets proposed in this invention; Figure 5 This is a schematic diagram of the internal structure of the clamping mechanism of an automatic stacking device for turnover baskets proposed in this invention; Figure 6 This is a schematic diagram of the connection structure between the second moving slider and the guide block of an automatic stacking device for turnover baskets proposed in this invention.

[0020] In the diagram: 1. Frame; 2. Support platform; 3. Vertical guide rail; 4. Turnover basket height sensor; 5. Human height sensor; 6. Mounting slot; 7. Sliding slot; 8. Sliding block; 9. First motor; 10. First lead screw; 11. First moving slider; 12. Mounting bracket; 13. Second motor; 14. Second lead screw; 15. Second moving slider; 16. Electric cylinder; 17. Clamping plate; 18. Sponge layer; 19. Rubber layer; 20. First pressure sensor; 21. Return spring; 22. Guide column; 23. Alarm; 24. Mounting cavity; 25. Movable cavity; 26. Second pressure sensor; 27. Force rod; 28. Connecting ring; 29. ​​Support spring; 30. Bracket; 31. Cylinder; 32. Longitudinal limit rod; 33. Guide block. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] This embodiment relates to an automatic stacking device for turnover baskets, see reference. Figure 1 and Figure 6As shown, the system includes a frame 1 and a support platform 2 mounted on the frame 1. The support platform 2 is used to support turnover baskets. A conveyor belt is installed on the support platform 2. At least two position sensors are arranged at intervals along the conveyor belt direction on the frame 1. The conveyor belt transports the turnover baskets to the clamping station, and the position sensors determine whether the turnover baskets have moved to the clamping station. A limit door is installed on the pin at the end of the frame 1 away from the support platform 2. A drive mechanism is installed on the frame 1. The position sensors are signal-connected to the drive mechanism and the clamping mechanism. A vertical guide rail 3 is provided at the end of the frame 1 away from the support platform 2, which slides with the drive mechanism. The drive mechanism includes a mounting groove 6, a sliding groove 7, a sliding block 8, a first motor 9, a first lead screw 10, a first moving slider 11, two mounting brackets 12, a second motor 13, a second lead screw 14, and a second moving slider 15. The components are arranged as follows: Mounting slot 6 is vertically formed on frame 1. Sliding slot 7 is vertically formed on frame 1. There are two sliding slots 7, the number of which is equal to the number of mounting slots 6. Each mounting slot 6 and each sliding slot 7 is located on the same side of frame 1. A sliding block 8 is slidably mounted in a sliding slot 7. The number of sliding slots 7 is equal to the number of sliding blocks 8. The sliding slots 7 restrict the movement trajectory of the sliding block 8, allowing it to move only vertically. A first motor 9 is fixedly mounted on the top surface of frame 1. A first lead screw 10 is rotatably mounted on mounting slot 6 and driven to rotate by the first motor 9. A first movable slider 11 is fitted onto the first lead screw 10 and slidably connected to mounting slot 6. The first movable slider 11 has a corresponding screw... The nuts corresponding to lever 10, two mounting brackets 12 are respectively fixedly connected between sliding block 8 and first movable slider 11 and between two sliding blocks 8 on the same side. The mounting bracket 12 is set horizontally, and the vertical movement of the mounting bracket 12 is guided and limited by sliding groove 7 and sliding block 8, which helps to ensure the stability of the mounting bracket 12. The second motor 13 is fixedly installed on the mounting bracket 12, the second lead screw 14 is rotatably installed on the mounting bracket 12, and the second movable slider 15 is matched and installed on the second lead screw 14. The second movable slider 15 has a nut corresponding to the second lead screw 14 embedded in it. The second movable slider 15 is fixedly connected to a guide block 33 that slides with the vertical guide rail 3. The vertical guide rail 3 has a guide groove that matches the outer contour of the guide block 33.

[0023] Above the support platform 2 is a clamping mechanism controlled by a drive mechanism to move and clamp the turnover basket. The clamping mechanism includes an electric cylinder 16, a clamping plate 17, a sponge layer 18, a rubber layer 19, a first pressure sensor 20, a return spring 21, a guide post 22, and an alarm 23. The components are arranged as follows: The electric cylinder 16 is fixedly mounted on the second movable slider 15. The clamping plate 17 is fixedly connected to the output end of the electric cylinder 16. The clamping plate 17 is made of a rigid material; the specific rigid material is not limited, as long as it is a rigid material. The sponge layer 18 is fixedly connected to the clamping plate 17. The sponge layer 18 has good elasticity, so when subjected to force, it does not rigidly transmit force, but absorbs the impact through its own compression deformation and transmits the smoothed pressure to the next layer. The rubber layer 19 is connected to the sponge layer 18 via Velcro. The rubber layer 19 directly contacts the turnover basket, utilizing its flexibility to adapt to the slight irregularities on the surface of the turnover basket, and simultaneously utilizing its high friction to prevent slippage during clamping. The reset spring 21 is fixedly connected to the clamping plate 17. A spring groove for housing the reset spring 21 is provided on the sponge layer 18. A guide post 22 is fixedly connected to the end face of the rubber layer 19 near the sponge layer 18. The guide post 22 corresponds to the reset spring 21. The reset spring 21, through its elastic force, buffers the external force transmitted by the rubber layer 19 and promotes rapid reset of the rubber layer 19 when the external force disappears. The guide post 22 constrains the movement trajectory of the reset spring 21, and the position of the guide post 22 on the rubber layer 19 corresponds to the position of the spring groove on the sponge layer 18, thereby achieving rapid positioning and installation of the rubber layer 19 on the sponge layer 18. The first pressure sensor 20 is fixedly installed at the center of the clamping plate 17. 17 provides rigid support, thereby ensuring that the clamping force is not lost due to structural deformation of the rubber layer 19 and the sponge layer 18, and provides a stable mounting base for the first pressure sensor 20. A storage slot for the first pressure sensor 20 is provided at the center of the sponge layer 18. The vertical end face of the first pressure sensor 20 away from the clamping plate 17 is closer to the clamping plate 17 than the vertical end face of the sponge layer 18 away from the clamping plate 17. The first pressure sensor 20 is signal-connected to the electric cylinder 16. The alarm 23 is fixedly mounted on the bottom surface of the clamping plate 17 and is signal-connected to the first pressure sensor 20. When the rubber layer 19 contacts the turnover basket, it first compresses the sponge layer 18, thereby transmitting pressure to the first pressure sensor 20. When the pressure signal monitored by the first pressure sensor 20 changes, the stroke and output power of the electric cylinder 16 are adjusted accordingly. Since the weight of the turnover baskets in a batch is the same, the clamping force required for the turnover baskets in that batch is the same. Therefore, the electric cylinder 16 has a preset stroke and output power before operation, so that the pressure signal change value generated by the first pressure sensor 20 is also the same. When the pressure signal change value monitored by the first pressure sensor 20 is significantly different from the preset pressure signal change value, the alarm 23 will sound an alarm, thereby reminding the staff that an abnormality has occurred during the clamping of the turnover basket. The staff needs to check whether the turnover basket itself has been deformed or cracked, and whether the rubber layer 19 and the sponge layer 18 have been worn.

[0024] In this embodiment, a turnover basket is placed on a support platform 2 and transported to a clamping station using a conveyor belt. A position sensor determines whether the turnover basket has moved to the clamping station. After confirming that the turnover basket has moved to the clamping station, an electric cylinder 16 is activated. The electric cylinder 16 drives the clamping plate 17 to move horizontally. The clamping plate 17 moves against the turnover basket through the rubber layer 19. Since the volume of the turnover basket remains unchanged, and the electric cylinder 16 continues to operate, when the rubber layer 19 contacts the turnover basket, the turnover basket compresses the sponge layer 18 through the rubber layer 19, thereby transmitting pressure to the first pressure sensor 20. This causes a change in the pressure signal monitored by the first pressure sensor 20. After the electric cylinder 16 stops moving, the pressure signal change value monitored by the first pressure sensor 20 during the clamping process is compared with a preset pressure signal change value. When there is a significant difference between the two, the alarm 23 will sound an alarm, thereby reminding the staff that an abnormality has occurred during the clamping of the turnover basket. The staff needs to check whether the turnover basket itself has been deformed or cracked, and whether the rubber layer 19 and the sponge layer 18 have been worn. With the difference between the two within a safe range, the second motor 13 is started, which drives the second lead screw 14 to rotate, causing the second moving slider 15 to move horizontally on the second lead screw 14. The second moving slider 15 drives the turnover basket to move horizontally through the clamping mechanism until the guide block 33 moves to the position above the vertical guide rail 3. Then, the first motor 9 is started, which drives the first lead screw 10 to rotate, causing the first moving slider 11 to move vertically on the first lead screw 10, so that the guide block 33 enters the vertical guide rail 3. At this time, the first moving slider 11 continues to move vertically downward on the first lead screw 10, thereby driving the turnover basket to move downward, so that the turnover basket is transported to the stacking area.

[0025] In one example, the clamping plate 17 has a connected mounting cavity 24 and a movable cavity 25. The movable cavity 25 is located above the mounting cavity 24. A second pressure sensor 26 is fixedly installed in the mounting cavity 24 and is connected to the alarm 23. A force-bearing rod 27 is movably installed in the movable cavity 25. The top of the force-bearing rod 27 has a hemispherical structure. A through hole is provided at the connection between the mounting cavity 24 and the movable cavity 25. The outer contour of the force-bearing rod 27 matches the inner wall contour of the through hole. A connecting ring 28 is fixedly connected to the force-bearing rod 27. The outer contour of the connecting ring 28 matches the inner wall contour of the movable cavity 25. A support spring 29 is fixedly connected between the bottom of the mounting cavity 24 and the bottom surface of the connecting ring 28. The elastic force of the support spring 29 allows the connecting ring 28 to reset when not affected by external force, thereby driving the force-bearing rod 27 to reset.

[0026] In this embodiment, if the turnover basket falls accidentally during the clamping process, the bottom edge of the top surface of the turnover basket will first contact the force-bearing rod 27 below. After being impacted, the force-bearing rod 27 moves downward, and the bottom surface of the force-bearing rod 27 will first contact the second pressure sensor 26. After the second pressure sensor 26 detects the change in pressure signal, the alarm 23 will immediately issue a warning to remind the staff that the current clamping state is abnormal.

[0027] In one example, brackets 30 are fixedly connected to both sides of the clamping plate 17. A cylinder 31 is fixedly installed on the bracket 30. A longitudinal limiting rod 32 is fixedly connected to the output end of the cylinder 31, which moves against the bottom surface of the upper edge of the turnover basket. A force sensor is embedded in the longitudinal limiting rod 32. A displacement sensor is installed on the cylinder 31. When determining whether the turnover basket is a light basket or a heavy basket, a fixed short-term drive signal can be given to the cylinder 31 to extend the piston rod of the cylinder 31 by a stroke that can lift the light basket but not the heavy basket. If the piston rod reaches the predetermined position, it means that the stroke is unobstructed and the turnover basket is lifted, and it is judged to be a light basket. If the piston rod does not reach the predetermined position, it means that it encounters huge resistance and cannot continue to move forward, and it is judged to be a heavy basket. The displacement sensor monitors the movement stroke of the cylinder 31 in real time.

[0028] In this embodiment, when the turnover basket is moved to the clamping station but not yet clamped, the cylinder 31 is activated. The cylinder 31 will perform a fixed stroke and drive the longitudinal limit rod 32 to move vertically upward. After the longitudinal limit rod 32 contacts the turnover basket, the force sensor will sense this pressure signal change. The output power and stroke of the electric cylinder 16 are matched according to the magnitude of the pressure signal change value monitored by the force sensor. When the turnover basket is determined to be a heavy basket, after the clamping plate 17 completes the clamping operation on the turnover basket, the cylinder 31 is activated. The cylinder 31 drives the longitudinal limit rod 32 to move upward, so that the top surface of the longitudinal limit rod 32 moves against the turnover basket.

[0029] In one example, the frame 1 is equipped with a turnover basket height sensor 4, which is used to detect the stacking height of the turnover baskets. The drive mechanism and the clamping mechanism are both connected to the turnover basket height sensor 4. The turnover basket height sensor 4 is an ultrasonic sensor, which monitors the height position of the turnover baskets to determine the stacking height position. The frame 1 is also equipped with a human height sensor 5, which is used to detect the height of the staff corresponding to the equipment. The human height sensor 5 is a safety laser scanner. The preset height of the turnover basket height sensor 4 corresponds to the preset height of the human height sensor 5. By monitoring the height information of the staff through the safety laser scanner, the most suitable stacking height of the turnover baskets can be determined based on the staff's height information, so that the staff can move the turnover baskets without the need for other tools.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pallet automatic stacking apparatus comprising a frame (1) and a carrying table (2) provided on the frame (1), the carrying table (2) being used to carry pallets, characterized in that, The rack (1) is provided with a driving mechanism, the carrying table (2) is provided with a clamping mechanism above the driving mechanism and is used for clamping the turnover basket, the rack (1) is provided with a vertical guide rail (3) which is in sliding fit with the driving mechanism at the end away from the carrying table (2), the rack (1) is provided with a turnover basket height sensor (4), the turnover basket height sensor (4) is used for detecting the stacking height of the turnover basket, the rack (1) is provided with a human height sensor (5), the human height sensor (5) is used for detecting the height of the staff corresponding to the equipment, the preset height of the turnover basket height sensor (4) corresponds to the preset height of the human height sensor (5), and the driving mechanism and the clamping mechanism are in signal connection with the turnover basket height sensor (4).

2. The automatic pallet stacking apparatus according to claim 1, wherein The carrying table (2) is provided with a conveying belt, and the rack (1) is sequentially provided with at least two position sensors which are arranged at intervals along the conveying direction of the conveying belt.

3. The automatic pallet stacking apparatus according to claim 1, wherein The rack (1) is provided with a limiting door which is installed on the pin shaft at the end away from the carrying table (2).

4. The automatic pallet stacking apparatus according to claim 1, wherein The driving mechanism comprises: A mounting groove (6) is vertically formed on the rack (1); A sliding groove (7) is vertically formed on the rack (1), and the sliding groove (7) is provided with two sliding grooves (7), the number of the sliding grooves (7) is equal to the number of the mounting grooves (6), and a single mounting groove (6) and a single sliding groove (7) are located on the same side of the rack (1); A sliding block (8) is slidably installed in the sliding groove (7), and the number of the sliding grooves (7) is equal to the number of the sliding blocks (8); A first motor (9) is fixedly installed on the top surface of the rack (1); A first lead screw (10) is rotatably installed on the mounting groove (6), and the first lead screw (10) is driven to rotate by the first motor (9); A first moving block (11) is installed on the first lead screw (10) in a matched mode, the first moving block (11) is in sliding connection with the mounting groove (6), and the first moving block (11) is embedded with a nut corresponding to the first lead screw (10); Two mounting frames (12) are fixedly connected between the sliding block (8) and the first moving block (11) and between the two sliding blocks (8) on the same side, respectively, and the mounting frame (12) is horizontally arranged; A second motor (13) is fixedly installed on the mounting frame (12); A second lead screw (14) is rotatably installed on the mounting frame (12); A second moving block (15) is installed on the second lead screw (14) in a matched mode, and the second moving block (15) is embedded with a nut corresponding to the second lead screw (14).

5. The automatic pallet stacking apparatus according to claim 4, wherein The second moving block (15) is fixedly connected with a guide block (33) which is in sliding fit with the vertical guide rail (3).

6. The automatic pallet stacking apparatus according to claim 4, wherein The clamping mechanism comprises: An electric cylinder (16) fixedly installed on the second moving slider (15); A clamping plate (17) fixedly connected to the output end of the electric cylinder (16); A sponge layer (18) fixedly connected to the clamping plate (17); A rubber layer (19) connected to the sponge layer (18) by a magic tape; A first pressure sensor (20) fixedly installed at the center of the clamping plate (17), a receiving groove for accommodating the first pressure sensor (20) being formed at the center of the sponge layer (18), the vertical end surface of the first pressure sensor (20) away from the clamping plate (17) being closer to the clamping plate (17) than the vertical end surface of the sponge layer (18) away from the clamping plate (17), and the first pressure sensor (20) being signal-connected with the electric cylinder (16); A reset spring (21) fixedly connected to the clamping plate (17), a spring groove for accommodating the reset spring (21) being formed in the sponge layer (18); A guide column (22) fixedly connected to the end face of the rubber layer (19) close to the sponge layer (18), the guide column (22) being correspondingly arranged with the reset spring (21); An alarm (23) fixedly installed on the bottom surface of the clamping plate (17), the alarm (23) being signal-connected with the first pressure sensor (20).

7. The automatic pallet stacking apparatus according to claim 6, wherein A mounting cavity (24) and a movable cavity (25) are formed in the clamping plate (17) and are in communication, the movable cavity (25) is located above the mounting cavity (24), a second pressure sensor (26) is fixedly installed in the mounting cavity (24), the second pressure sensor (26) is signal-connected with the alarm (23), a force receiving rod (27) is movably installed in the movable cavity (25), the top end of the force receiving rod (27) is in a hemispherical structure, a connecting ring (28) is fixedly connected to the force receiving rod (27), and a supporting spring (29) is fixedly connected between the bottom of the mounting cavity (24) and the bottom surface of the connecting ring (28).

8. The automatic pallet stacking apparatus according to claim 6, wherein Supports (30) are fixedly connected to both sides of the clamping plate (17), a pneumatic cylinder (31) is fixedly installed on the support (30), a longitudinal limiting rod (32) movably abutting against the upper end edge bottom surface of the turnover basket is fixedly connected to the output end of the pneumatic cylinder (31), and a displacement sensor is installed on the pneumatic cylinder (31).

9. The automatic pallet stacking apparatus according to claim 1, wherein The turnover basket height sensor (4) is an ultrasonic sensor.

10. The automatic pallet stacking apparatus according to claim 1, wherein The human body height sensor (5) is a safety laser scanner.

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