A plastic tray with stable bearing performance and a preparation method thereof

Abstract

This invention relates to the field of plastic pallet technology, specifically a plastic pallet with stable load-bearing capacity. The pallet includes a pallet body, with multiple grooves on its top surface, each groove connected to a water channel, and a water inlet at the bottom of each groove. Multiple support feet are fixed to the bottom surface of the pallet body. Multiple slots are formed on the pallet body, with steel pipes inserted into each slot. A connecting ball joint is fixed to one end of each steel pipe. Multiple limiting grooves are formed on the pallet body, one of which houses a disassembly component. Multiple anti-slip components are provided on the top surface of the pallet body, with anti-slip pads on each component. This design improves the load-bearing capacity of the pallet body, reduces the risk of deformation and damage, enhances the overall stability and durability of the pallet body, ensures the safety of the loaded goods, facilitates the quick disassembly and use of the steel pipes, and ensures stability and durability over long-term use.

Description

Technical Field

[0001] This invention relates to the field of plastic pallet technology, and in particular to a plastic pallet with stable load-bearing performance and its preparation method. Background Technology

[0002] Plastic pallets are typically made of high-quality plastic materials such as high-density polyethylene, which have excellent mechanical properties and resistance to deformation. The structural design of the pallets is usually carefully calculated and optimized to ensure that the structure can maintain stability and rigidity when bearing heavy loads.

[0003] A search revealed Chinese patent CN219635737U, which provides a high-load-bearing plastic pallet, comprising a plastic carrier plate and a base, and several foot blocks disposed between the base and the carrier plate. The foot blocks elevate the carrier plate relative to the base by a certain height. The foot blocks include rigid metal support members, the bottom of the carrier plate has a protrusion, and the upper wall of the base has a sleeve corresponding to the protrusion. In this solution, the rigid metal support members are used as part of the foot blocks, thus relying on these support members to support the carrier plate. Compared with existing plastic foot blocks, it has higher strength, thereby giving the pallet a better load-bearing capacity.

[0004] However, during use, it was found that simply connecting the base and the carrier plate with support components does not significantly improve the load-bearing capacity of the carrier plate, and the effect on improving the structural strength of the plastic pallet is not good. In long-term use or harsh environments, problems such as cracking and detachment are prone to occur, which limits the weight and volume of goods on the pallet, reduces transportation efficiency, and the pallet is easily damaged during transportation because it cannot withstand excessive impact or vibration, affecting the integrity and safety of the goods, and is not conducive to the carrying and transportation of goods. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a plastic pallet with stable load-bearing performance and its manufacturing method. It solves the problems of insufficient load-bearing capacity improvement for the carrier plate due to simply connecting the base and carrier plate with supporting components, poor structural strength enhancement of the plastic pallet, and susceptibility to cracking and detachment during long-term use or in harsh environments. This limits the weight and volume of goods on the pallet, reduces transportation efficiency, and makes the pallet susceptible to damage during transport due to insufficient impact or vibration, affecting the integrity and safety of goods and hindering the load-bearing and transporting of goods.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plastic pallet with stable load-bearing performance, comprising a pallet body, a plurality of grooves on the top surface of the pallet body, a water inlet channel communicating with the grooves, a water inlet hole communicating with the bottom of the grooves, a plurality of feet fixedly provided on the bottom surface of the pallet body, a plurality of slots on the pallet body, a steel pipe inserted into the slots, a connecting ball head fixedly provided at one end of the steel pipe, a plurality of limiting grooves on the pallet body, a disassembly component provided inside one of the limiting grooves, a plurality of anti-slip components on the top surface of the pallet body, and an anti-slip pad provided on the anti-slip components.

[0007] Preferably, the grooves are arranged in a uniform manner, the water delivery trough is provided in multiple ways, the outer surface of the lower end of the support foot is inserted into the inner surface of the groove, the bottom surface of the tray body is threaded with multiple hexagonal bolts through threaded holes, and one end of the steel pipe is threaded with a hexagonal bolt.

[0008] Using the above technical solution, the steel pipe is inserted into the corresponding slot and fixed with the corresponding hexagonal bolts.

[0009] Preferably, the disassembly assembly includes a disassembly block, which has a sliding groove. The disassembly block is inserted into and engaged with a connecting ball head through the sliding groove. The upper end of the sliding groove is connected to an opening groove, which is slidably connected to the inner outer peripheral wall of the connecting ball head. The top surface of the disassembly block is arc-shaped.

[0010] Preferably, the bottom surface of the disassembly block has two circular grooves, a circular block is slidably connected inside the circular grooves, and a circular rod is fixedly provided on the bottom surface of the circular block.

[0011] Preferably, the bottom surface of the pallet body is provided with multiple positioning grooves, and a positioning block is provided below the disassembly block. The positioning block is inserted into the positioning groove, and the bottom surfaces of the two round rods are fixedly connected to the positioning block.

[0012] Preferably, a tension spring is sleeved on the outer peripheral wall of the lower end of the round rod, the bottom surface of the tension spring is fixedly connected to the top surface of the positioning block, and the top surface of the tension spring is fixedly connected to the bottom surface of the disassembly block.

[0013] Using the above technical solution, the positioning block is pulled down to separate from the positioning groove. At this time, the tension spring is stretched, the round block slides along the round groove, and the round rod slides along the disassembly block. At this time, pulling the positioning block will cause the disassembly block to rotate along the connecting ball head through the round rod and the round block. Pulling the positioning block forward will cause the steel pipe to slide along the slot through the connecting ball head, and the steel pipe will be taken out.

[0014] Preferably, the bottom surface of the support foot is provided with multiple inclined grooves, which are connected to the water inlet. The bottom surface of the support foot is provided with multiple rubber pads in a ring array structure. The top surface of the rubber pads is fixed with connecting bolts, and the bottom surface of the support foot is threadedly connected to the connecting bolts through threaded holes.

[0015] The above technical solution involves installing multiple rubber pads by rotating connecting bolts and threaded connections to the bottom of the support feet, thereby increasing the friction between the support feet of the pallet body and the ground or other storage surfaces.

[0016] Preferably, the anti-slip component includes a triangular groove, which is arranged in a ring array with multiple triangular grooves. The triangular grooves are opened on the top surface of the tray body, and the anti-slip pad is inserted into the triangular groove. Multiple connecting grooves are opened at the bottom of the triangular groove.

[0017] The above technical solution involves inserting the anti-slip mat into the corresponding triangular groove, and then inserting the open connecting post into the connecting groove to fix the anti-slip mat. The anti-slip effect is improved by the frictional contact between the anti-slip mat and the goods on the top surface of the pallet body.

[0018] Preferably, the bottom surface of the anti-slip mat is provided with a plurality of open connecting posts, which are inserted into the connecting groove. A spherical groove is provided in the middle of the top surface of the anti-slip mat, and a lever is fixed inside the spherical groove.

[0019] With the above technical solution, the open connecting post can be removed and replaced by pulling the anti-slip pad with the lever to separate it from the connecting groove.

[0020] A method for preparing a plastic pallet with stable load-bearing performance, wherein the pallet body is made from the following raw materials in parts by weight: 60-75 parts polypropylene, 10-20 parts polyethylene, 4-7 parts polycarbonate, 3-6 parts glass fiber, 2-4 parts nano-calcium carbonate, and 1-3 parts SEBS thermoplastic elastomer.

[0021] The method for preparing a plastic pallet with stable load-bearing performance includes the following steps:

[0022] Mixing: Feed all raw materials into a premixer for mixing. During the mixing process, the mixing temperature is 150-220℃, the mixing speed is 80-500 rpm, and the mixing time is 5-20 min.

[0023] Melting: The mixed raw materials are fed into a twin-screw extruder and heated to a molten state. During this process, the heating temperature is 180-330℃, the pressure is 5-20MPa, and the screw speed is 50-240rpm.

[0024] Injection molding: The molten material is injected into a pre-designed injection mold while pressure and holding time are applied. During the injection process, the temperature is 200-260℃, the injection pressure is 60-230MPa, the holding time is 5-30s, and the injection speed is 70-190mm / s.

[0025] Cooling and curing: The formed pallet body is cooled and cured by water cooling for 20-40 minutes. After curing, the pallet body is post-processed, including trimming and deburring.

[0026] The beneficial effects of this invention are:

[0027] 1. In this invention, rainwater and other water on the top surface of the pallet body are drained into the water inlet through grooves and water channels, and then transported from the water inlet to the inclined channel for discharge to the outside. This reduces the residual moisture on the top surface of the pallet body, reduces the impact of rainwater when the pallet body is used outdoors, and avoids the problem of goods getting damp or damaged due to water stains. Before use, the corresponding anti-slip pads are installed on the top surface of the pallet body and connected to the bottom surface of the support feet by rotating the connecting bolts. Multiple rubber pads are installed, which increases the friction between the support feet of the pallet body and the ground or other storage surfaces, preventing the pallet body from sliding due to wet, uneven ground or vibration during storage or transportation, and improving the stability and safety of the pallet body.

[0028] 2. In this invention, when different load-bearing capacities are required for different usage scenarios, steel pipes are inserted into the corresponding slots and fixed with corresponding hexagonal bolts. Installing an appropriate number of steel pipes in appropriate positions satisfies the different load-bearing requirements of the pallet body, improves the load-bearing capacity of the pallet body, and effectively disperses the load on the pallet body by rationally arranging the steel pipes, reducing the risk of deformation and damage to the pallet body, improving the overall stability and durability of the pallet body, ensuring the safety of the goods carried, thereby extending the service life of the pallet body and reducing replacement costs.

[0029] 3. In this invention, pulling down the positioning block separates it from the positioning groove. At this time, the tension spring is stretched, the round block slides along the round groove, and the round rod slides along the disassembly block. Pulling the positioning block at this time causes the disassembly block to rotate along the connecting ball head through the round rod and the round block, so that the disassembly block and the corresponding steel pipe are horizontal. The groove wall of the opening groove slides with the outer peripheral wall of the rear end of the connecting ball head. Pulling the positioning block forward moves the steel pipe along the slot through the connecting ball head, and the steel pipe can be taken out. When taking different steel pipes out of the pallet body, the disassembly component is taken out from the corresponding limiting groove. After the disassembly block slides upward along the limiting groove and separates from the connecting ball head, it can be taken out. After taking it out, it is moved into the corresponding limiting groove, and the disassembly block is inserted into the corresponding connecting ball head. This makes it convenient to take out steel pipes in different positions. The replaced steel pipe is fixed with an internal hex bolt, which facilitates the quick disassembly and use of the steel pipe, reduces the difficulty of operation, ensures the stability and durability under long-term use, reduces the risk of damage caused by disassembly, and improves the use effect and adaptability of the pallet body.

[0030] 4. In this invention, the anti-slip pad is inserted into the corresponding triangular groove, and the open connecting post is inserted into the connecting groove to fix the anti-slip pad. The anti-slip pad makes frictional contact with the goods on the top surface of the pallet body, which improves the anti-slip effect, reduces the occurrence of goods falling during the use of the pallet body, and ensures the integrity and safety of the goods. This not only reduces economic losses caused by falling goods, but also improves the safety of the working environment. When the anti-slip pad needs to be replaced, it can be removed and replaced by pulling the lever to separate the open connecting post from the connecting groove. This makes it convenient to replace worn or damaged anti-slip pads, improves the convenience and flexibility of use, helps to reduce the direct wear of goods on the surface of the pallet body, and extends the service life of the pallet body.

[0031] 5. In this invention, the synergistic effect of multiple raw materials during preparation results in a pallet body with excellent load-bearing capacity and deformation resistance, ensuring that the pallet body can maintain stable shape and performance under heavy load or long-term use; SEBS thermoplastic elastomer improves the flexibility of the plastic matrix, enhances the impact resistance and fatigue resistance of the material, and the use of antioxidants and ultraviolet absorbers effectively prevents the aging and fading of the material, extending the service life of the pallet body. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the tray body structure of the present invention;

[0034] Figure 3 This is a partial schematic diagram of the tray body structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the support structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the steel pipe structure assembly of the present invention;

[0037] Figure 6 This is a schematic diagram of the positioning groove structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the disassembly block structure of the present invention;

[0039] Figure 8 This is a schematic diagram of the assembly of the connecting ball joint structure of the present invention;

[0040] Figure 9 This is a schematic diagram of the anti-slip mat structure of the present invention;

[0041] Figure 10 This is a schematic diagram of the assembly of the open connecting column structure of the present invention;

[0042] Figure 11 This is an enlarged schematic diagram of the structure at point A of the present invention.

[0043] In the diagram: 1. Tray body; 2. Groove; 3. Water inlet; 4. Water inlet hole; 5. Anti-slip component; 501. Anti-slip mat; 502. Triangular groove; 503. Connecting groove; 504. Open connecting post; 505. Spherical groove; 506. Lever; 6. Support foot; 7. Slot; 8. Steel pipe; 9. Limiting groove; 10. Disassembly component; 1001. Disassembly block; 1002. Slide groove; 1003. Opening groove; 1004. Circular groove; 1005. Circular block; 1006. Circular rod; 1007. Positioning groove; 1008. Positioning block; 1009. Tension spring; 11. Socket head bolt; 12. Connecting ball head; 13. Inclined groove; 14. Rubber pad; 15. Connecting bolt. Detailed Implementation

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] like Figures 1-8As shown, this embodiment provides a plastic pallet with stable load-bearing performance and its preparation method, including a pallet body 1. The top surface of the pallet body 1 has multiple grooves 2, and water inlets 3 are connected to the grooves 2. Water inlets 4 are connected to the bottom of the grooves 2. Multiple support feet 6 are fixed on the bottom surface of the pallet body 1. Multiple slots 7 are opened on the pallet body 1. A steel pipe 8 is inserted into the slot 7. A connecting ball head 12 is fixed at one end of the steel pipe 8. Multiple limiting grooves 9 are opened on the pallet body 1. A disassembly component 10 is provided inside one of the limiting grooves 9. Multiple anti-slip components 5 are provided on the top surface of the pallet body 1. Anti-slip pads 501 are provided on the anti-slip components 5.

[0047] The grooves 2 are arranged in a uniform structure, and there are multiple water supply tanks 3. The outer surface of the lower end of the support foot 6 is inserted into the inner surface of the groove 2. The bottom surface of the tray body 1 is threaded with multiple hexagonal bolts 11 through threaded holes. One end of the steel pipe 8 is threaded through the hexagonal bolt 11. The steel pipe 8 is inserted into the corresponding slot 7 and fixed by the corresponding hexagonal bolt 11.

[0048] The disassembly assembly 10 includes a disassembly block 1001, on which a sliding groove 1002 is provided. The disassembly block 1001 is inserted into and engaged with a connecting ball head 12 through the sliding groove 1002. An opening groove 1003 is connected to the upper end of the sliding groove 1002, and the opening groove 1003 is slidably connected to the inner outer peripheral wall of the connecting ball head 12. The top surface of the disassembly block 1001 is arc-shaped, and two circular grooves 1004 are provided on the bottom surface of the disassembly block 1001. A circular block 1005 is slidably connected inside the circular groove 1004, and a circular rod 1006 is fixedly provided on the bottom surface of the circular block 1005. A plurality of positioning grooves 1007 are provided on the bottom surface of the tray body 1, and a positioning block 1008 is provided below the disassembly block 1001. The positioning block 1008 is inserted into and engaged with the positioning grooves 1007, and the two circular rods 1006 are fixedly provided on the bottom surface of the tray body 1. The bottom surface of 006 is fixedly connected to the positioning block 1008. A tension spring 1009 is sleeved on the outer peripheral wall of the lower end of the round rod 1006. The bottom surface of the tension spring 1009 is fixedly connected to the top surface of the positioning block 1008, and the top surface of the tension spring 1009 is fixedly connected to the bottom surface of the disassembly block 1001. When the positioning block 1008 is pulled down to separate from the positioning groove 1007, the tension spring 1009 is stretched. The round block 1005 slides along the round groove 1004, and the round rod 1006 slides along the disassembly block 1001. At this time, pulling the positioning block 1008 will cause the disassembly block 1001 to rotate along the connecting ball head 12 through the round rod 1006 and the round block 1005. Pulling the positioning block 1008 forward will cause the steel pipe 8 to slide along the slot 7 through the connecting ball head 12, and the steel pipe 8 will be taken out.

[0049] The bottom surface of the support foot 6 is provided with multiple inclined grooves 13, which are connected to the water inlet 4. The bottom surface of the support foot 6 is provided with multiple rubber pads 14 in a ring array structure. The top surface of the rubber pads 14 is fixed with connecting bolts 15. The bottom surface of the support foot 6 is threadedly connected to the connecting bolts 15 through threaded holes. By rotating the connecting bolts 15 to the threaded connection of the bottom surface of the support foot 6, the multiple rubber pads 14 are installed, which improves the friction between the support foot 6 of the pallet body 1 and the ground or other storage surfaces.

[0050] When using the pallet body 1 outdoors, rainwater on the top surface of the pallet body 1 is drained into the water inlet 4 through the groove 2 and water inlet 3, and then transported from the water inlet 4 to the inclined groove 13 and discharged to the outside. This reduces the residual moisture on the top surface of the pallet body 1, reduces the impact of rainwater when using the pallet body 1 outdoors, and avoids the problem of goods getting damp or damaged due to water stains.

[0051] Before use, install the corresponding anti-slip pads 501 on the top surface of the pallet body 1, and connect them to the bottom thread of the support foot 6 by rotating the connecting bolts 15. Install multiple rubber pads 14 to increase the friction between the support foot 6 of the pallet body 1 and the ground or other storage surfaces, and prevent the pallet body 1 from sliding due to factors such as wet, uneven or vibrating ground during storage or transportation, thereby improving the stability and safety of the pallet body 1.

[0052] When different load-bearing capacities are required for different usage scenarios, steel pipes 8 are inserted into the corresponding slots 7 and fixed with corresponding hexagonal bolts 11. Installing an appropriate number of steel pipes 8 in appropriate positions meets the different load-bearing requirements of the pallet body 1, improves the load-bearing capacity of the pallet body 1, and effectively distributes the load on the pallet body 1 by reasonably arranging the steel pipes 8, reducing the risk of deformation and damage to the pallet body 1, improving the overall stability and durability of the pallet body 1, ensuring the safety of the goods carried, thereby extending the service life of the pallet body 1 and reducing replacement costs.

[0053] When the installed steel pipe 8 needs to be disassembled or replaced, pull down the positioning block 1008 to separate it from the positioning groove 1007. At this time, the tension spring 1009 is stretched, the round block 1005 slides along the round groove 1004, and the round rod 1006 slides along the disassembly block 1001. Pulling the positioning block 1008 at this time will cause the disassembly block 1001 to rotate along the connecting ball head 12 through the round rod 1006 and the round block 1005, so that the disassembly block 1001 is horizontal with the corresponding steel pipe 8. The groove wall of the opening groove 1003 slides against the outer peripheral wall of the rear end of the connecting ball head 12. Pulling the positioning block 1008 forward will cause the steel pipe 8 to slide along the slot 7 through the connecting ball head 12, and the steel pipe 8 can then be removed. When removing different steel pipes 8 from the pallet body 1, the disassembly component 10 is removed from the corresponding limiting groove 9. The disassembly block 1001 slides upward along the limiting groove 9 and separates from the connecting ball head 12, allowing it to be removed. After removal, it is moved into the corresponding limiting groove 9, and the disassembly block 1001 is inserted into the corresponding connecting ball head 12, making it convenient to remove steel pipes 8 from different positions. The replaced steel pipe 8 is fixed with hexagonal socket head cap bolts 11, which facilitates the quick disassembly and use of the steel pipe 8, reduces the difficulty of operation, ensures stability and durability under long-term use, reduces the risk of damage caused by disassembly, and improves the use effect and adaptability of the pallet body 1.

[0054] Example 2

[0055] like Figures 9-11 As shown, this embodiment is based on the previous embodiment, but differs in that the anti-slip component 5 includes a triangular groove 502. Multiple triangular grooves 502 are arranged in a circular array structure. The triangular grooves 502 are opened on the top surface of the pallet body 1. The anti-slip pad 501 is inserted into the triangular groove 502. Multiple connecting grooves 503 are opened at the bottom of the triangular groove 502. The anti-slip pad 501 is inserted into the corresponding triangular groove 502, and the open connecting post 504 is inserted into the connecting groove 503 to fix the anti-slip pad 501. The anti-slip effect is improved by the frictional contact between the anti-slip pad 501 and the goods on the top surface of the pallet body 1.

[0056] The bottom surface of the anti-slip mat 501 is fixed with multiple open connecting posts 504, which are inserted into the connecting groove 503. A spherical groove 505 is opened in the middle of the top surface of the anti-slip mat 501, and a lever 506 is fixed inside the spherical groove 505. By pulling the anti-slip mat 501 with the lever 506, the open connecting posts 504 can be separated from the connecting groove 503 and can be removed for replacement.

[0057] Before using the pallet body 1, insert the anti-slip pad 501 into the corresponding triangular groove 502, and insert the open connecting post 504 into the connecting groove 503 to fix the anti-slip pad 501. The anti-slip pad 501 is in frictional contact with the goods on the top surface of the pallet body 1, which improves the anti-slip effect, reduces the occurrence of goods falling during the use of the pallet body 1, and ensures the integrity and safety of the goods. This not only reduces the economic losses caused by the falling of goods, but also improves the safety of the working environment.

[0058] When the anti-slip mat 501 needs to be replaced, the anti-slip mat 501 can be pulled by the lever 506 to separate the open connecting post 504 from the connecting groove 503 and then removed for replacement. This makes it convenient to replace worn or damaged anti-slip mats 501, improves the ease of use and flexibility, helps to reduce the direct wear of goods on the surface of the pallet body 1, and extends the service life of the pallet body 1.

[0059] Example 3

[0060] A method for preparing a plastic pallet with stable load-bearing performance:

[0061] The tray body is made of the following raw materials in parts by weight: 60 parts polypropylene, 10 parts polyethylene, 4 parts polycarbonate, 3 parts glass fiber, 2 parts nano-calcium carbonate, and 1 part SEBS thermoplastic elastomer.

[0062] The method for preparing a plastic pallet with stable load-bearing performance includes the following steps:

[0063] Mixing: Feed all raw materials into a premixer for mixing. During the mixing process, the mixing temperature is 150℃, the mixing speed is 80rpm, and the mixing time is 5min to ensure that the components are evenly distributed and there is no clumping or stratification.

[0064] Melting: The mixed raw materials are fed into a twin-screw extruder and heated to a molten state. During this process, the heating temperature is 180℃, the pressure is 5MPa, and the screw speed is 50rpm to ensure the uniformity and stability of the plastic melt.

[0065] Injection molding: The molten material is injected into a pre-designed injection mold, and pressure and holding time are applied at the same time. During the injection process, the temperature is 200℃, the injection pressure is 60~230MPa, the holding time is 5s, and the injection speed is 70mm / s to avoid the generation of defects such as bubbles and shrinkage cavities.

[0066] Cooling and curing: The formed pallet body is cooled and cured by water cooling for 20 minutes. After curing, the pallet body is post-processed, including trimming and deburring, to improve its appearance quality and performance.

[0067] Example 4

[0068] A method for preparing a plastic pallet with stable load-bearing performance:

[0069] The tray body is made of the following raw materials in parts by weight: 70 parts polypropylene, 15 parts polyethylene, 5 parts polycarbonate, 5 parts glass fiber, 3 parts nano-calcium carbonate, and 2 parts SEBS thermoplastic elastomer.

[0070] The method for preparing a plastic pallet with stable load-bearing performance includes the following steps:

[0071] Mixing: All raw materials are fed into a premixer for mixing. During the mixing process, the mixing temperature is 200℃, the mixing speed is 300rpm, and the mixing time is 10min to ensure that the components are evenly distributed and there is no clumping or stratification.

[0072] Melting: The mixed raw materials are fed into a twin-screw extruder and heated to a molten state. During this process, the heating temperature is 250℃, the pressure is 15MPa, and the screw speed is 150rpm to ensure the uniformity and stability of the plastic melt.

[0073] Injection molding: The molten material is injected into a pre-designed injection mold, and pressure and holding time are applied at the same time. During the injection molding process, the temperature is 240℃, the injection pressure is 180MPa, the holding time is 15s, and the injection speed is 120mm / s to avoid the generation of defects such as bubbles and shrinkage cavities.

[0074] Cooling and curing: The formed pallet body is cooled and cured by water cooling for 30 minutes. After curing, the pallet body is post-processed, including trimming and deburring, to improve its appearance quality and performance.

[0075] Example 5

[0076] A method for preparing a plastic pallet with stable load-bearing performance:

[0077] The tray body is made of the following raw materials in parts by weight: 75 parts polypropylene, 20 parts polyethylene, 7 parts polycarbonate, 6 parts glass fiber, 4 parts nano-calcium carbonate, and 3 parts SEBS thermoplastic elastomer.

[0078] The method for preparing a plastic pallet with stable load-bearing performance includes the following steps:

[0079] Mixing: All raw materials are fed into a premixer for mixing. The mixing temperature is 220℃, the mixing speed is 500rpm, and the mixing time is 20min to ensure that the components are evenly distributed and there is no clumping or stratification.

[0080] Melting: The mixed raw materials are fed into a twin-screw extruder and heated to a molten state. During this process, the heating temperature is 330℃, the pressure is 20MPa, and the screw speed is 240rpm to ensure the uniformity and stability of the plastic melt.

[0081] Injection molding: The molten material is injected into a pre-designed injection mold, and pressure and holding time are applied at the same time. During the injection process, the temperature is 260℃, the injection pressure is 230MPa, the holding time is 30s, and the injection speed is 190mm / s to avoid the generation of defects such as bubbles and shrinkage cavities.

[0082] Cooling and curing: The formed pallet body is cooled and cured by water cooling for 40 minutes. After curing, the pallet body is post-processed, including trimming and deburring, to improve its appearance quality and performance.

[0083] During preparation, the synergistic effect of multiple raw materials enables the prepared pallet body 1 to have excellent load-bearing capacity and deformation resistance, ensuring that the pallet body 1 can maintain stable shape and performance under heavy load or long-term use.

[0084] SEBS thermoplastic elastomer improves the flexibility of the plastic matrix, enhances the material's impact resistance and fatigue resistance, and the use of antioxidants and UV absorbers effectively prevents the material from aging and fading, extending the service life of the pallet body 1.

[0085] 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 plastic pallet with stable load-bearing performance, comprising a pallet body (1), characterized in that: The top surface of the tray body (1) is provided with multiple grooves (2), the grooves (2) are connected to a water supply channel (3), the bottom of the grooves (2) is connected to a water supply hole (4), the bottom surface of the tray body (1) is fixed with multiple feet (6), the tray body (1) is provided with multiple slots (7), a steel pipe (8) is inserted into the slot (7), one end of the steel pipe (8) is fixed with a connecting ball head (12), the tray body (1) is provided with multiple limiting grooves (9), one of the limiting grooves (9) is provided with a disassembly component (10), the top surface of the tray body (1) is provided with multiple anti-slip components (5), and the anti-slip components (5) are provided with anti-slip pads (501). The disassembly assembly (10) includes a disassembly block (1001), on which a sliding groove (1002) is provided. The disassembly block (1001) is inserted into the connecting ball head (12) through the sliding groove (1002). An opening groove (1003) is connected to the upper end of the sliding groove (1002). The opening groove (1003) is slidably connected to the inner outer peripheral wall of the connecting ball head (12). The top surface of the disassembly block (1001) is arc-shaped. The bottom surface of the disassembly block (1001) has two circular grooves (1004), and a circular block (1005) is slidably connected inside the circular grooves (1004). A circular rod (1006) is fixedly provided on the bottom surface of the circular block (1005). The bottom surface of the pallet body (1) is provided with multiple positioning grooves (1007), and a positioning block (1008) is provided below the disassembly block (1001). The positioning block (1008) is inserted into the positioning groove (1007), and the bottom surfaces of the two round rods (1006) are fixedly connected to the positioning block (1008). A tension spring (1009) is sleeved on the outer peripheral wall of the lower end of the round rod (1006). The bottom surface of the tension spring (1009) is fixedly connected to the top surface of the positioning block (1008), and the top surface of the tension spring (1009) is fixedly connected to the bottom surface of the disassembly block (1001).

2. The plastic pallet with stable load-bearing performance as described in claim 1, characterized in that: The grooves (2) are arranged in a uniform structure. The water delivery trough (3) is provided with multiple grooves. The lower outer surface of the support foot (6) is inserted into the inner surface of the groove (2). The bottom surface of the tray body (1) is threaded with multiple hexagonal bolts (11) through threaded holes. One end of the steel pipe (8) is threaded with hexagonal bolts (11).

3. The plastic pallet with stable load-bearing performance as described in claim 1, characterized in that: The bottom surface of the support foot (6) is provided with multiple inclined grooves (13), which are connected to the water inlet (4). The bottom surface of the support foot (6) is provided with multiple rubber pads (14) in a ring array structure. The top surface of the rubber pads (14) is fixed with connecting bolts (15), and the bottom surface of the support foot (6) is threadedly connected to the connecting bolts (15) through threaded holes.

4. The plastic pallet with stable load-bearing performance as described in claim 1, characterized in that: The anti-slip component (5) includes a triangular groove (502), which is arranged in a ring array. The triangular groove (502) is located on the top surface of the tray body (1). The anti-slip pad (501) is inserted into the triangular groove (502). The bottom of the triangular groove (502) is provided with multiple connecting grooves (503).

5. The plastic pallet with stable load-bearing performance as described in claim 4, characterized in that: The bottom surface of the anti-slip pad (501) is fixed with a plurality of open connecting posts (504), the open connecting posts (504) are inserted into the connecting groove (503), and a spherical groove (505) is opened in the middle of the top surface of the anti-slip pad (501), and a lever (506) is fixed inside the spherical groove (505).

6. The method for preparing a plastic pallet with stable load-bearing performance as described in any one of claims 1 to 5, characterized in that: The tray body is made of the following raw materials in parts by weight: 60-75 parts polypropylene, 10-20 parts polyethylene, 4-7 parts polycarbonate, 3-6 parts glass fiber, 2-4 parts nano calcium carbonate, 1-3 parts SEBS thermoplastic elastomer, 0.3-0.6 parts antioxidant, 0.4-0.7 parts ultraviolet absorber, 0.8-1.2 parts lubricant, and 3-5 parts plasticizer; The method for preparing a plastic pallet with stable load-bearing performance includes the following steps: Mixing: Feed all raw materials into a premixer for mixing. During the mixing process, the mixing temperature is 150-220℃, the mixing speed is 80-500 rpm, and the mixing time is 5-20 min. Melting: The mixed raw materials are fed into a twin-screw extruder and heated to a molten state. During this process, the heating temperature is 180-330℃, the pressure is 5-20MPa, and the screw speed is 50-240rpm. Injection molding: The molten material is injected into a pre-designed injection mold while pressure and holding time are applied. During the injection process, the temperature is 200-260℃, the injection pressure is 60-230MPa, the holding time is 5-30s, and the injection speed is 70-190mm / s. Cooling and curing: The formed pallet body is cooled and cured by water cooling for 20-40 minutes. After curing, the pallet body is post-processed, including trimming and deburring.

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