A plastic product stacking device

Abstract

The application relates to the technical field of stacking devices, in particular to a plastic product stacking device which comprises a bottom disc rack, the bottom disc rack is fixedly installed with symmetrical bottom disc main racks at lower ends, lifting side guide supports are fixedly installed with lifting frame selecting mechanisms at lower ends, the outer surfaces of lifting vertical columns on one side are fixedly installed with control cabinet brackets, the control cabinet brackets are fixedly installed with cabinet body mounting racks at upper ends, the cabinet body mounting racks are fixedly installed with electrical control cabinets at upper ends, the front ends of the butt joint surfaces of each vehicle body are fixedly installed with anti-collision plates, and the front ends of the opposite inner surfaces of the butt joint surfaces of each vehicle body are fixedly installed with guide plates. When the bottom plate is arranged downwards and extrudes the products, even if the plastic products have a tendency to escape outwardly due to stress, the low-position cross beams and the slide rail frames on the two sides can tightly block the products, the products are effectively prevented from flying out of the equipment and being clamped into the equipment or from hurting people, and the overall safety and stability of equipment operation are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of palletizing equipment technology, and more particularly to a palletizing equipment for plastic products. Background Technology

[0002] A palletizing device is an industrial automation equipment that automatically stacks finished production materials into a specified stack according to a predetermined arrangement. It is widely used at the end of the production line to achieve centralized storage, transportation and management of materials.

[0003] Currently, automated palletizing methods for plastic products mainly include the following technical approaches. First, a multi-axis industrial robot or robotic arm combined with an end effector is used to grasp and stack plastic products via vacuum suction cups or mechanical grippers. This method offers high flexibility, but the equipment structure is complex, and the purchase, installation, and commissioning costs are high. Second, dedicated palletizing equipment with visual recognition capabilities is used. A CCD camera is used to locate scattered materials, and then the gripping mechanism is driven to complete the stacking.

[0004] The existing technology has the following shortcomings: 1. In existing technologies, automated palletizing of plastic products mainly relies on multi-axis industrial robots combined with machine vision systems, or the use of complex specialized palletizing machinery. While this approach offers a high degree of automation, it involves substantial equipment investment and requires highly sophisticated technical expertise for installation and commissioning. It also demands stringent environmental conditions, including lighting and dust levels. Furthermore, the identification and handling of scattered materials often necessitates high-precision vision systems, further increasing the overall cost. This forces many small and medium-sized injection molding enterprises to continue using manual palletizing due to the prohibitive costs, resulting in low efficiency and persistently high labor costs.

[0005] 2. Existing technologies mostly rely on rigid robotic arms for gripping or simple top-to-bottom stacking. When handling smooth, easily slippery, and relatively soft plastic drums, problems such as slippage during gripping, unstable stacking, and stack distortion easily occur. Especially when the plastic drums have a shifted center of gravity or the stacking height increases, accidents such as overall tipping over or scattering are highly likely. In addition, automated equipment often experiences violent shaking due to an unstable center of gravity during high-speed operation, posing a threat to the safety of personnel and equipment in the work area. Traditional solutions often lack comprehensive physical constraints to prevent material escape and dynamic anti-swaying. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a plastic product palletizing device.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a plastic product palletizing device, comprising a chassis frame, symmetrical chassis main frames fixedly installed at the lower end of the chassis frame, mounting brackets fixedly installed on the relatively inner sides of the two chassis main frames, control cabinet brackets fixedly installed on the upper ends of the two mounting brackets, lifting columns fixedly installed on the upper ends of each control cabinet bracket, top connecting beams fixedly installed on the upper ends of the two lifting columns, and lifting guide rails fixedly installed on the relatively inner sides of the two lifting columns, lifting side guide brackets slidably installed between the lifting guide rails, lifting frame selection mechanisms fixedly installed at the lower ends of the lifting side guide brackets, cabinet mounting brackets fixedly installed on the upper ends of one control cabinet bracket, electrical control cabinets fixedly installed on the upper ends of the cabinet mounting brackets, two symmetrically arranged vehicle body mating surfaces fixedly installed on the front surface of the chassis main frame, and anti-collision plates fixedly installed at the front ends of each vehicle body mating surface.

[0008] As a preferred technical solution of the present invention, three driving motors are fixedly installed at the lower end of each of the vehicle body docking surfaces, symmetrical driving motors are fixedly installed at the lower end of the chassis frame, driving wheels are fixedly installed at the output end of each driving motor, and guide plates are fixedly installed at the front end of the opposite inner surface of each of the vehicle body docking surfaces.

[0009] As a preferred technical solution of the present invention, a hydraulic support leg is fixedly installed on the vehicle body docking surface between two adjacent driving wheels, and an obstacle avoidance radar is fixedly installed on the upper end of the rear surface of the chassis frame.

[0010] As a preferred technical solution of the present invention, the lifting frame selection mechanism further includes a limiting frame fixedly installed at the lower end of the two lifting side guide brackets. The front end of the two limiting frames is fixedly installed with the main frame of the loading platform, and the rear end of the two limiting frames is fixedly installed with a transverse reinforcing connecting beam, and the position of the transverse reinforcing connecting beam is lower than the main frame of the loading platform.

[0011] As a preferred technical solution of the present invention, side fixing plates are fixedly installed on the relative inner surfaces of the two limiting frames. Three sets of equidistant guide grooves are opened on the relative inner surfaces of the side fixing plates, with three guide grooves forming a set. Flexible guide blocks are slidably installed in the guide grooves.

[0012] As a preferred technical solution of the present invention, a cargo platform beam is fixedly installed between the two lifting side guide supports. A lifting drive hydraulic pump is fixedly installed at the upper end of the cargo platform beam. A base plate is fixedly installed through the output end of the lifting drive hydraulic pump through the cargo platform beam. Several equidistantly arranged cross guide members are fixedly installed on the lower surface of the base plate.

[0013] As a preferred technical solution of the present invention, the plurality of cross guide members on the lower surface of the base plate are distributed in an equidistant array, the lateral spacing of the cross guide members is the same as the arrangement spacing of the flexible guide blocks, and the positions of the cross guide members and the flexible guide blocks are arranged in a one-to-one correspondence.

[0014] As a preferred technical solution of the present invention, a top drive pulley and a bottom guide pulley are fixedly installed on the opposite outer surfaces of the two lifting side guide brackets, and the top drive pulley and the bottom guide pulley are slidably engaged on the lifting guide rail. A lifting drive component is fixedly installed on the opposite inner surfaces of the two lifting side guide brackets.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In existing technologies, accurately grasping and palletizing randomly positioned plastic products on production lines often relies on expensive 3D vision recognition systems and multi-axis servo robots. This not only significantly increases equipment investment costs but also has extremely high requirements for ambient light and dust levels, making it prone to recognition errors. This solution abandons traditional vision guidance, utilizing a lifting side guide bracket to control the base plate to press down along the lifting guide rail. A cross-shaped guide fixed to the lower surface of the base plate performs initial forced alignment of misaligned products. This is further enhanced by flexible guide blocks sliding along guide grooves on both sides, and the elastic compression of the flexible guide blocks provides secondary horizontal positioning of the products. This purely mechanical alignment method offers extremely high reliability even under harsh injection molding workshop conditions. Furthermore, because the flexible guide blocks have a flexible buffering effect, they can adaptively absorb the dimensional tolerances of the plastic products. Compared to traditional rigid clamps, this completely avoids the problem of scratches or flattening of plastic buckets due to rigid pushing, achieving low-cost, high-tolerance, and non-destructive processing.

[0016] 2. Existing stacking or sorting equipment often suffers from slippery surfaces of plastic products and sloshing liquids inside containers, leading to a shift in the center of gravity and a high risk of product falls or equipment overturning, posing significant safety hazards. This solution addresses these issues by using hydraulic support legs 11 on both sides to extend downwards and firmly anchor the chassis frame, ensuring absolute rigidity and locking during operation and effectively mitigating the swaying load during lifting and sorting. The solution utilizes a "pit-type" frame formed by the main loading platform frame, side sliding rail frames, and transverse reinforcing beams. The horizontal position of the transverse reinforcing beams is designed to be lower than the main loading platform frame, creating a physical barrier. When the base plate sorts and compresses the products, even if the plastic products tend to escape due to the force, they are firmly blocked by the low-level beams and side sliding rail frames, effectively preventing products from flying out and getting stuck inside the equipment or injuring personnel, greatly improving the overall safety and stability of the equipment. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a plastic product palletizing device according to the present invention; Figure 2 This is a schematic diagram of the walking drive motor structure of a plastic product palletizing device according to the present invention; Figure 3 This is a schematic diagram of the chassis frame structure of a plastic product palletizing device according to the present invention; Figure 4 This is a schematic diagram of the chassis main frame structure of a plastic product palletizing device according to the present invention; Figure 5 This is a schematic diagram of the control cabinet bracket structure of a plastic product palletizing device according to the present invention; Figure 6 This is a schematic diagram of the lifting frame selection mechanism of a plastic product palletizing device according to the present invention; Figure 7 This is a schematic diagram of the flexible guide block structure of a plastic product palletizing device according to the present invention; Figure 8 This is a schematic diagram of the base plate structure of a plastic product palletizing device according to the present invention; Figure 9 This invention relates to a plastic product palletizing device. Figure 8 Enlarged view of point A in the middle.

[0018] The attached diagram lists the components represented by each number as follows: 1. Chassis frame; 2. Electrical control cabinet; 3. Lifting column; 4. Vehicle body docking surface; 5. Top connecting beam; 6. Obstacle avoidance radar; 7. Drive motor; 8. Drive wheel; 9. Anti-collision plate; 10. Guide plate; 11. Hydraulic support leg; 12. Chassis main frame; 13. Mounting bracket; 14. Control cabinet bracket; 15. Cargo platform main frame; 16. Base plate; 17. Lifting side guide bracket; 18. Lifting drive hydraulic pump; 19. Cargo platform crossbeam; 20. Lifting drive component; 21. Top drive pulley; 22. Bottom guide pulley; 23. Side fixing plate; 24. Flexible guide block; 25. Transverse reinforcing connecting beam; 26. Guide groove; 27. Cross guide component; 28. Lifting guide rail; 29. ​​Cabinet mounting bracket; 30. Limiting frame. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figures 1-9The illustrated plastic product palletizing device includes a chassis frame 1. Symmetrical chassis main frames 12 are fixedly installed at the lower end of the chassis frame 1. Mounting brackets 13 are fixedly installed on the inner sides of the two chassis main frames 12. Control cabinet brackets 14 are fixedly installed on the upper ends of the two mounting brackets 13. Lifting columns 3 are fixedly installed on the upper ends of each control cabinet bracket 14. Top connecting beams 5 are fixedly installed on the upper ends of the two lifting columns 3. Lifting guide rails 28 are fixedly installed on the inner sides of the two lifting columns 3. Lifting side guide brackets 17 are slidably installed between the lifting guide rails 28. Lifting frame selection mechanisms are fixedly installed at the lower ends of the lifting side guide brackets 17. Cabinet mounting brackets 29 are fixedly installed on the upper ends of one side control cabinet bracket 14. Electrical control cabinets 2 are fixedly installed on the upper ends of the cabinet mounting brackets 29. Two symmetrical vehicle body mating surfaces 4 are fixedly installed on the front surface of the chassis main frames 12. Anti-collision plates 9 are fixedly installed at the front end of each vehicle body mating surface 4.

[0021] Three drive motors 7 are fixedly installed at the lower end of each vehicle body docking surface 4. Symmetrical drive motors 7 are fixedly installed at the lower end of the chassis frame 1. Drive wheels 8 are fixedly installed at the output end of each drive motor 7. Guide plates 10 are fixedly installed at the front end of the opposite inner surface of each vehicle body docking surface 4.

[0022] A hydraulic support leg 11 is fixedly installed on the vehicle body docking surface 4 between two adjacent driving wheels 8, and an obstacle avoidance radar 6 is fixedly installed on the upper part of the rear surface of the chassis frame 1.

[0023] The lifting frame selection mechanism also includes a limiting frame 30 fixedly installed at the lower end of the two lifting side guide brackets 17. The front end of the two limiting frames 30 is fixedly installed with the main frame 15 of the loading platform, and the rear end of the two limiting frames 30 is fixedly installed with a transverse reinforcing connecting beam 25. The position of the transverse reinforcing connecting beam 25 is lower than that of the main frame 15 of the loading platform.

[0024] Side fixing plates 23 are fixedly installed on the relative inner surfaces of the two limiting frames 30. Three sets of equidistant guide grooves 26 are opened on the relative inner surfaces of the side fixing plates 23. Each set consists of three guide grooves 26. Flexible guide blocks 24 are slidably installed in the guide grooves 26.

[0025] A cargo platform beam 19 is fixedly installed between two lifting side guide brackets 17. A lifting drive hydraulic pump 18 is fixedly installed at the upper end of the cargo platform beam 19. A base plate 16 is fixedly installed through the output end of the lifting drive hydraulic pump 18 through the cargo platform beam 19. Several equidistantly arranged cross guide pieces 27 are fixedly installed on the lower surface of the base plate 16.

[0026] Multiple cross guide members 27 on the lower surface of the base plate 16 are arranged in an equidistant array. The lateral spacing of the cross guide members 27 is the same as the arrangement spacing of the flexible guide blocks 24, and the positions of the cross guide members 27 and the flexible guide blocks 24 are set in a one-to-one correspondence.

[0027] Top drive pulley 21 and bottom guide pulley 22 are fixedly installed on the opposite outer surfaces of the two lifting side guide brackets 17. The top drive pulley 21 and bottom guide pulley 22 are slidably engaged on the lifting guide rail 28. Lifting drive components 20 are fixedly installed on the opposite inner surfaces of the two lifting side guide brackets 17.

[0028] Working Principle: The control system sends work instructions to the electrical control cabinet 2, which then starts the travel drive motor 7, causing the travel drive wheels 8 to rotate and drive the equipment to move in multiple directions along a preset track or on the ground. During travel, the obstacle avoidance radar 6, fixedly installed at the rear of the chassis frame 1, continuously emits distance measurement signals to measure the distance between the equipment and obstacles or production line equipment in the factory area in real time, and feeds the distance data back to the electrical control cabinet 2. The electrical control cabinet 2 adjusts the speed of the travel drive motor 7 in real time according to the preset safety threshold to achieve deceleration and avoidance or precise stopping. When the equipment reaches the designated production line station, the hydraulic support legs 11 on both sides extend downwards until the support base is fully pressed against the ground, making the equipment position rigidly fixed and providing stable reverse support force to eliminate the shaking generated during the alignment process. At this stage, the chassis main frame 12 bears the overall load. The guide plate 10 located at the front end of the vehicle body docking surface 4 is used to guide the equipment to pass smoothly through the ground joint or track docking point. The anti-collision plate 9, firmly installed at the front end of the vehicle body docking surface 4, is used to absorb impact energy in the event of an accidental collision and protect the internal components. Once in place, the vehicle body docking surface 4 completes physical or signal docking with the production line conveyor mechanism, ready to receive plastic products.

[0029] The equipment's operating status is uniformly scheduled by the electrical control cabinet 2. The electrical control cabinet 2 is securely mounted on the cabinet mounting frame 29, which is mounted on the control cabinet bracket 14. The control cabinet bracket 14 is securely connected to the chassis frame 1 via the mounting bracket 13 to ensure that the internal electrical components are protected from vibration and impact during equipment translation or lifting, thus ensuring the stable operation of the control system.

[0030] After the production line transports the plastic drums to the sorting area, the lifting drive hydraulic pump 18 starts, controlling the base plate 16 to move downwards along the lifting guide rail 28, approaching the plastic drums. During the lifting process, the lifting side guide brackets 17 on both sides slide closely against the lifting column 3 to ensure the running trajectory is vertical; the lifting drive component 20 located on the inner side of the lifting side guide brackets 17 and the loading platform beam 19 provide the necessary structural rigidity and top positioning to prevent jamming during the lifting process.

[0031] As the base plate 16 continues to descend, multiple cross-shaped guide members 27 fixedly installed on the lower surface of the base plate 16 first contact the arc-shaped outer wall of the plastic cylinder. The cross-shaped guide members 27, utilizing their multi-faceted guide structure, perform an initial forced alignment of the misaligned plastic cylinder. Subsequently, the flexible guide blocks 24 within the guide grooves 26 on the side fixing plate 23 slide inward, causing the side fixing plate 23 to adhere to the side wall of the plastic cylinder, applying lateral constraint force. This, in conjunction with the base plate 16, forces the plastic cylinder into and neatly arranges it within the array area below the base plate 16. Because the lateral spacing of the cross-shaped guide members 27 is the same as the arrangement spacing of the flexible guide blocks 24, and their positions correspond one-to-one, the three-dimensional enclosure structure formed by the two precisely constrains the position of the plastic cylinder. To prevent the plastic cylinder from scattering outward or being squeezed out, the entire arrangement process is confined within a closed frame formed by the main frame 15 of the loading platform, the limiting frames 30 on both sides, and the lateral reinforcing connecting beams 25. Among them, the transverse reinforcing connecting beam 25 is located below the horizontal plane of the main frame 15 of the loading platform, forming a low-position obstruction, which effectively prevents the plastic barrel from sliding and escaping when it is pressed and pushed down.

[0032] After the plastic drums are neatly arranged, an external robotic arm or external handling mechanism picks up the arranged plastic drums from inside the frame and removes them. After picking, the lifting drive hydraulic pump 18 reverses its action, driving the base plate 16 to move upwards along the lifting guide rail 28 to a high position. The hydraulic support legs 11 retract and lift off the ground, and the equipment moves to the next workstation or returns to the standby area via the walking drive wheels 8, completing a full cycle of operation. Through the precise coordination of the above components, the equipment achieves safe, accurate, and fully automated sorting and stacking operations for easily slipping and deformable plastic drums.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A plastic product palletizing device, comprising a chassis frame (1), characterized in that: The chassis frame (1) is fixedly mounted with symmetrical chassis main frames (12) at its lower end. Mounting brackets (13) are fixedly mounted on the inner sides of both chassis main frames (12). Control cabinet brackets (14) are fixedly mounted on the upper ends of both mounting brackets (13). A lifting column (3) is fixedly mounted on the upper end of each control cabinet bracket (14). A top connecting beam (5) is fixedly mounted on the upper ends of both lifting columns (3), and lifting guide rails (2) are fixedly mounted on the inner sides of both lifting columns (3). 8) A lifting side guide bracket (17) is slidably installed between the lifting guide rails (28). A lifting frame selection mechanism is fixedly installed at the lower end of the lifting side guide bracket (17). A cabinet mounting bracket (29) is fixedly installed at the upper end of the control cabinet bracket (14) on one side. An electrical control cabinet (2) is fixedly installed at the upper end of the cabinet mounting bracket (29). Two symmetrically arranged vehicle body docking surfaces (4) are fixedly installed on the front surface of the chassis main frame (12). A crash plate (9) is fixedly installed at the front end of each vehicle body docking surface (4).

2. The plastic product palletizing device according to claim 1, characterized in that: Three drive motors (7) are fixedly installed at the lower end of each of the vehicle body docking surfaces (4), and symmetrical drive motors (7) are fixedly installed at the lower end of the chassis frame (1). Each drive motor (7) has a drive wheel (8) fixedly installed at its output end, and a guide plate (10) is fixedly installed at the front end of the relative inner surface of each of the vehicle body docking surfaces (4).

3. A plastic product palletizing device according to claim 2, characterized in that: The vehicle body docking surface (4) is located between two adjacent walking drive wheels (8) and a hydraulic support leg (11) is fixedly installed thereon, and an obstacle avoidance radar (6) is fixedly installed on the upper end of the rear surface of the chassis frame (1).

4. A plastic product palletizing device according to claim 1, characterized in that: The lifting frame selection mechanism also includes a limiting frame (30) fixedly installed at the lower end of the two lifting side guide brackets (17). The front end of the two limiting frames (30) is fixedly installed with the main frame of the loading platform (15), and the rear end of the two limiting frames (30) is fixedly installed with a transverse reinforcing connecting beam (25). The position of the transverse reinforcing connecting beam (25) is lower than that of the main frame of the loading platform (15).

5. A plastic product palletizing device according to claim 4, characterized in that: Side fixing plates (23) are fixedly installed on the relative inner surfaces of the two limiting frames (30). Three sets of guide grooves (26) are opened on the relative inner surfaces of the side fixing plates (23). Each set consists of three guide grooves (26). Flexible guide blocks (24) are slidably installed in the guide grooves (26).

6. A plastic product palletizing device according to claim 5, characterized in that: A cargo platform beam (19) is fixedly installed between the two lifting side guide brackets (17). A lifting drive hydraulic pump (18) is fixedly installed at the upper end of the cargo platform beam (19). A base plate (16) is fixedly installed through the output end of the lifting drive hydraulic pump (18) through the cargo platform beam (19). Several equidistant cross guide pieces (27) are fixedly installed on the lower surface of the base plate (16).

7. A plastic product palletizing device according to claim 6, characterized in that: The multiple cross guides (27) on the lower surface of the base plate (16) are arranged in an equidistant array. The lateral spacing of the cross guides (27) is the same as the arrangement spacing of the flexible guide blocks (24), and the positions of the cross guides (27) and the flexible guide blocks (24) are arranged in a one-to-one correspondence.

8. A plastic product palletizing device according to claim 1, characterized in that: A top drive pulley (21) and a bottom guide pulley (22) are fixedly installed on the opposite outer surfaces of the two lifting side guide brackets (17). The top drive pulley (21) and the bottom guide pulley (22) are slidably engaged on the lifting guide rail (28). A lifting drive component (20) is fixedly installed on the opposite inner surfaces of the two lifting side guide brackets (17).

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