Molded tray

Abstract

The utility model provides a mould pressing tray which comprises a tray base and foot piers, the foot piers are provided with supporting plates, on one hand, the supporting plates are used for increasing the stress area of the foot piers, reducing pressure and protecting the foot piers, and on the other hand, the supporting plates can fix and support barrel-shaped goods located on the lower layer of the supporting plates when the barrel-shaped goods are stacked. The foot piers are provided with mould pressing foot piers integrated with the tray base, non-mould pressing foot piers are further arranged at the four corners of the lower portion of the tray base, the non-mould pressing foot piers are wood shaving foot piers, the non-mould pressing foot piers and the mould pressing foot piers, and the limit load of the mould pressing tray is further improved through the non-mould pressing foot piers. The tray base is further provided with reinforcing ribs of different types, the reinforcing ribs of different types are distributed on the tray base in a staggered mode, the bearing capacity of the mould pressing tray is improved, and the service life of the mould pressing tray is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of molded trays, and more specifically, relates to a molded tray. Background Technology

[0002] As the most basic container equipment in unitized logistics, pallets are closely related to the development of the logistics industry. In recent years, the logistics industry has grown steadily, and with the nationwide promotion of palletized transportation, the pallet industry has also flourished. As the main body for moving and handling goods, pallets are primarily used to protect goods. They form a moving or handling unit with the goods and are often used in conjunction with forklifts, pallet trucks, cranes, etc., to automate cargo transportation and improve cargo flow efficiency.

[0003] Molded pallets, also known as plant fiber molded flat industrial pallets, are typically made from raw materials such as wood shavings, plant straw, and bamboo. They are integral structures, with the panel and support legs molded in one piece. The upper surface of the pallet is flat and smooth, suitable for transporting various goods, while the lower surface has reinforcing ribs to ensure the pallet's strength and stability.

[0004] Molded pallets are environmentally friendly products made from wood processing residues, waste, and low-grade wood, enabling recycling and reuse with a recycling rate of up to 100%. Compared to traditional wooden pallets, molded pallets cost at least one-third less. They have low moisture content (generally controlled between 6% and 8%), are dimensionally stable, do not twist or warp, are lighter (50% lighter than hardwood pallets), and have high strength and rigidity, with a maximum load capacity of over 5000 kg. Furthermore, using the same number of pallets saves three-quarters of the space compared to ordinary wooden pallets, reducing transportation costs. Therefore, molded pallets are increasingly dominating the pallet market, and research on them is becoming more intensive. Key research directions for molded pallets include how to better utilize environmentally friendly raw materials and how to improve their load-bearing capacity and strength.

[0005] Molded pallets, used to secure barrel-shaped goods, require precise calculations and design of each part of the mold to ensure a tight fit between the barrels and the rest of the pallet. This necessitates high-precision machining techniques and strict quality control to ensure the barrels are stably fixed in the correct position. It also requires consideration of how to effectively absorb the impact energy during loading to prevent slippage, especially when transporting empty barrels, as their light weight makes them prone to sliding and misalignment. To optimize space utilization, molded pallets and barrel-shaped goods often need to be stacked during storage or transport. Except for the base pallet, the remaining molded pallets are stacked on top of the goods. If the molded pallets cannot effectively restrain and secure the goods beneath them, the goods may collapse or be damaged.

[0006] Therefore, in order to solve the above problems, there is an urgent need to find a molded tray. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a molded pallet, comprising a pallet base and foot blocks. The foot blocks are equipped with support plates, which serve two purposes: firstly, to increase the bearing area of ​​the foot blocks, reduce pressure, and protect them; secondly, to fix and support barrel-shaped goods stacked on the support plates. In addition to the molded foot blocks integrated with the pallet base, non-molded foot blocks are also provided at the four corners below the pallet base. These non-molded foot blocks are made of wood shavings. The non-molded and molded foot blocks further enhance the ultimate load capacity of the molded pallet. The pallet base also features different types of reinforcing ribs, which are staggered and distributed across the pallet base, improving the load-bearing capacity and service life of the molded pallet.

[0008] A molded pallet includes a pallet base, foot blocks, and a support plate, wherein the support plate is fixed to the foot blocks and can fix and support the goods located on the lower layer when goods are stacked; the foot blocks include non-molded foot blocks and molded foot blocks.

[0009] The goods are barrel-shaped, and the pallet base can secure four barrels. The support plate not only increases the bearing area of ​​the footrests, reduces pressure, and protects them, but also secures and supports the barrels below the support plate when they are stacked. When the molded pallets and goods are stacked in multiple layers, a structure is formed: bottom molded pallet - bottom barrel-shaped goods - top molded pallet - top barrel-shaped goods. In this case, the lower edge of the bottom barrel-shaped goods is secured by the pallet base of the bottom molded pallet, and the upper edge of the bottom barrel-shaped goods is secured by the support plate of the top molded pallet. That is, except for the topmost layer of goods, the remaining stacked goods have double securing. During transportation, the double securing makes the goods more stable and less prone to slipping, increasing the stability and safety of the transportation process. During loading and unloading, multi-layer stacking improves the efficiency of goods transfer. It should be noted that the molded pallets have a certain load-bearing limit, so the molded pallets and goods cannot be stacked indefinitely.

[0010] The non-molded foot block is a wood shaving foot block, and the wood shavings used to make the foot block include, but are not limited to, wood shavings and bamboo shavings. The wood shaving foot block is manufactured using an advanced hot-pressing process and environmentally friendly adhesives, and features water resistance, heat resistance, corrosion resistance, and high compressive strength.

[0011] Furthermore, the pallet base is rectangular, and the non-molded foot blocks are located at the four corners below the pallet base.

[0012] In some embodiments, the tray base is square.

[0013] In some embodiments, the non-molded foot blocks are not integral with the pallet base, but are fixed to the bottom of the pallet base by means of nails, strong adhesive, etc., and the number of non-molded foot blocks is four.

[0014] Furthermore, the molding foot block includes a first molding foot block and a second molding foot block; the first molding foot block is disposed in the middle of the two parallel sides below the tray base; the second molding foot block is disposed in the middle of the other two parallel sides below the tray base.

[0015] The molded foot blocks are integrated with the pallet base. There are two first molded foot blocks and two second molded foot blocks. There are a total of eight non-molded and molded foot blocks, arranged in three rows below the pallet base. The first and third rows are identical, with three foot blocks per row: non-molded foot block - first molded foot block - non-molded foot block. The second row has two foot blocks per row: second molded foot block - second molded foot block. The spacing between foot blocks in each row is equal, and the spacing between foot blocks within the same row is also equal, facilitating the insertion and removal of goods by a forklift.

[0016] In some methods, ultimate load tests have demonstrated that placing non-molded foot blocks at the four corners below the tray base can significantly improve the ultimate load of the molded tray.

[0017] Furthermore, the size of the first molding foot block is smaller than that of the second molding foot block; the support plate is fixed to the non-molding foot block, the first molding foot block, or the support plate is fixed to the second molding foot block.

[0018] In some configurations, the three support plates are fixed to three rows of foot piers respectively.

[0019] Furthermore, the tray base is also provided with reinforcing ribs, which include a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, a fourth reinforcing rib, and a fifth reinforcing rib.

[0020] In some embodiments, the number of the first reinforcing ribs is four, the number of the second reinforcing ribs is four, the number of the third reinforcing ribs is four, the number of the fourth reinforcing ribs is four, and the number of the fifth reinforcing ribs is two.

[0021] Furthermore, the first reinforcing rib is distributed along the four sides of the tray base and is connected to the first mold pressing foot and the second mold pressing foot.

[0022] In some embodiments, a first reinforcing rib is formed by connecting two arc-shaped reinforcing ribs and two straight reinforcing ribs, forming an arc-shaped reinforcing rib-straight reinforcing rib-straight reinforcing rib-arc-shaped reinforcing rib connection structure, wherein the arc-shaped reinforcing rib-straight reinforcing rib or straight reinforcing rib-straight reinforcing rib or straight reinforcing rib-arc-shaped reinforcing rib is connected at right angles.

[0023] Furthermore, one end of the second reinforcing rib is connected to the first reinforcing rib, and the other end is connected to the second mold pressing foot; one end of the third reinforcing rib is connected to the first reinforcing rib, and the other end is connected to the second mold pressing foot.

[0024] Furthermore, one end of the fourth reinforcing rib is connected to the first mold pressing foot block, and the other end is connected to the second mold pressing foot block.

[0025] Furthermore, the two ends of the fifth reinforcing rib are respectively connected to the second mold pressing foot block.

[0026] Furthermore, the goods are barrel-shaped.

[0027] The barrel-shaped goods include, but are not limited to, chemical barrels made of plastic, steel, composite materials, etc.

[0028] This utility model has the following beneficial effects:

[0029] (1) This utility model provides a molded pallet, including a pallet base and foot blocks. The foot blocks are provided with a support plate. The support plate is used to increase the force-bearing area of ​​the foot blocks, reduce the pressure, and protect the foot blocks. On the other hand, it can fix and support the barrel-shaped goods located on the lower layer of the support plate when the barrel-shaped goods are stacked.

[0030] (2) In addition to the molded foot block that is integrated with the pallet base, the foot block is also provided at the four corners below the pallet base. The non-molded foot block is a shaving foot block. The non-molded foot block and the molded foot block also improve the ultimate load of the molded pallet.

[0031] (3) The pallet base is also provided with different types of reinforcing ribs, which are distributed alternately on the pallet base to improve the load-bearing capacity and service life of the molded pallet. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the molded tray in Example 1;

[0033] Figure 2 This is a schematic diagram of a molded pallet securing barrel-shaped goods in Example 1;

[0034] Figure 3 This is a schematic diagram of the molded pallet foot support structure in Example 1;

[0035] Figure 4 This is a schematic diagram of the support plate structure in Example 1;

[0036] Figure 5 This is a schematic diagram of the stacking structure of the molded pallet and barrel-shaped goods in Example 1;

[0037] Figure 6 This is a schematic diagram of the reinforcing rib structure in Example 1.

[0038] Figure 7 The positions of the different types of foot blocks in Example 2 are numbered. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments described below are intended to facilitate the understanding of the present invention and do not constitute any limitation thereof.

[0040] Example 1: A molded tray

[0041] like Figure 1-2 As shown, this utility model provides a molded pallet, including a pallet base 1, foot blocks 2, and a support plate 3.

[0042] like Figure 3 As shown, the pallet base 1 is square, and the foot blocks 2 include non-molded foot blocks 4, first molded foot blocks 5, and second molded foot blocks 6. There are four non-molded foot blocks 4, which are not integral with the pallet base 1 but are fixed to the four corners of the pallet base 1 using nails, strong adhesive, etc. The non-molded foot blocks 4 are wood shavings foot blocks, and the wood shavings used to make them include, but are not limited to, wood shavings and bamboo shavings. The wood shavings foot blocks are manufactured using advanced hot-pressing technology and environmentally friendly adhesives, and are characterized by water resistance, heat resistance, corrosion resistance, and high compressive strength. There are two first molded foot blocks 5, which are located in the middle of the two parallel sides below the pallet base 1, and the orientation of the first molded foot blocks 5 is parallel to these two sides. There are two second molded foot blocks 6, which are located in the middle of the remaining two parallel sides below the pallet base 1, and the orientation of the second molded foot blocks 6 is perpendicular to these two sides. The first molded pressure foot block 5 is smaller than the second molded pressure foot block 6. Both the first and second molded pressure foot blocks 5 and 6 are integrated with the pallet base 1. There are a total of eight pressure foot blocks: non-molded pressure foot blocks 4, first molded pressure foot blocks 5, and second molded pressure foot blocks 6. These are arranged in three rows below the pallet base 1. The first and third rows are identical, each containing three pressure foot blocks: non-molded pressure foot block 4, first molded pressure foot block 5, and non-molded pressure foot block 4. The second row contains two pressure foot blocks: second molded pressure foot block 6 and second molded pressure foot block 6. The spacing between the pressure foot blocks in each row is equal, and the spacing between pressure foot blocks within the same row is also equal, facilitating the insertion and removal of goods by a forklift.

[0043] like Figure 4-5As shown, the support plate 3 can be fixed to three rows of foot blocks. When the support plate 3 is fixed to the first or third row of foot blocks, it is connected to two non-molded foot blocks 4 and one first molded foot block 5; when the support plate 3 is fixed to the second row of foot blocks, it is connected to two second molded foot blocks 6. The support plate 3 can increase the contact area between the molded pallet foot blocks and the plane, reducing pressure. Especially when the weight of the goods is close to the load limit, it can protect the molded pallet and extend its service life. When goods are stacked, the support plate 3 can also fix and support the goods located on the lower layer of the support plate. The goods are barrel-shaped goods, and the pallet base 1 can fix four barrel-shaped goods. When molded pallets and goods are stacked in multiple layers, a structure is formed: bottom molded pallet 7 - bottom barrel-shaped goods 8 - top molded pallet 9 - top barrel-shaped goods 10. In this case, the lower base edge 11 of the bottom barrel-shaped goods 8 is fixed by the pallet base 1 of the bottom molded pallet 7, and the upper base edge 12 of the bottom barrel-shaped goods 8 is fixed by the support plate 3 of the top molded pallet 9. That is, except for the topmost goods, the remaining stacked goods are doubly secured. During transportation, the double securing makes the goods more stable and less prone to slipping, increasing the stability and safety of the transportation process. During loading and unloading, multi-layer stacking improves the efficiency of goods transfer. It should be noted that molded pallets have a certain load-bearing limit, so molded pallets and goods cannot be stacked indefinitely. The barrel-shaped goods include, but are not limited to, chemical drums made of plastic, steel, composite materials, etc.

[0044] like Figure 6As shown, the tray base 1 is also provided with reinforcing ribs, including a first reinforcing rib 13, a second reinforcing rib 14, a third reinforcing rib 15, a fourth reinforcing rib 16, and a fifth reinforcing rib 17. There are four first reinforcing ribs 13, each of which is formed by connecting two arc-shaped reinforcing ribs and two straight reinforcing ribs, forming an arc-shaped reinforcing rib-straight reinforcing rib-straight reinforcing rib-arc-shaped reinforcing rib connection structure, like an "M". The arc-shaped reinforcing rib-straight reinforcing rib or straight reinforcing rib-straight reinforcing rib or straight reinforcing rib-arc reinforcing rib connection is at right angles; the second reinforcing rib 14 is arc-shaped, the third reinforcing rib 15 and the fourth reinforcing rib 16 are linear, and the fifth reinforcing rib 17 is arc-shaped. The first reinforcing rib 13 is distributed along the four sides of the pallet base 1, with one end connected to the first molding foot block 5 and the other end connected to the second molding foot block 6; there are four second reinforcing ribs 14, one end of which is connected to the first reinforcing rib 13 and the other end connected to the second molding foot block 6; there are four third reinforcing ribs 15, one end of which is connected to the first reinforcing rib 13 and the other end connected to the second molding foot block 6; there are four fourth reinforcing ribs 16, one end of which is connected to the first molding foot block 5 and the other end connected to the second molding foot block 6; there are two fifth reinforcing ribs 17, each end of which is connected to one of the two second molding foot blocks 6. The above five types of reinforcing ribs are distributed alternately on the pallet base 1, effectively dispersing and bearing external pressure, preventing the molded pallet from deforming or being damaged under stress, and improving the load-bearing capacity and service life of the molded pallet.

[0045] Example 2: The Influence of Different Types of Foot Blocks on the Ultimate Load of Molded Pallets

[0046] The difference between this embodiment and Embodiment 1 is that, as Figure 7 As shown, the foot blocks at positions ①-⑧ are transformed into different combinations and quantities of non-molded foot blocks, first molded foot blocks, and second molded foot blocks. The different combinations of foot blocks are shown in Table 1 below.

[0047] Table 1. Different combinations of foot blocks

[0048]

[0049] The above combination 1 is the same as the foot block combination of the molded pallet provided in Example 1. The difference between combination 2 and combination 1 is that the positions of the molded foot blocks and the non-molded foot blocks are swapped. The foot blocks of combination 3 are all molded foot blocks, and the foot blocks of combination 4 are all non-molded foot blocks.

[0050] The molded pallets made from the above four different combinations of foot blocks were subjected to ultimate load testing. The testing method for "Ultimate Load, U" in "Performance Requirements and Test Selection for General-Purpose Flat Pallets for Intermodal Transport" (Standard No.: GB / T 4995-2014) was followed. The test results are shown in Table 2 below. It should be noted that the size of the first molded foot block is slightly smaller than that of the second molded foot block, but this difference can be ignored when testing the ultimate load.

[0051] Table 2. Ultimate load of molded pallets with different combinations of foot blocks

[0052] Footrest combination Combination 1 Combination 2 Combination 3 Combination 4 Ultimate load (t) 1.78 1.65 1.54 1.31

[0053] Analysis of the data in Table 2 shows that the ultimate load of the molded pallet containing combination 1 and combination 2 foot blocks is higher than that of the molded pallet containing combination 3 and combination 4 foot blocks, indicating that combining non-molded and molded foot blocks can improve the ultimate load of the molded pallet. Combination 3 foot blocks are all molded, and their compressive strength is lower than that of non-molded foot blocks, thus resulting in a lower ultimate load. Although combination 4 foot blocks are all non-molded, the non-molded foot blocks are not integral with the pallet base and are not connected to the reinforcing ribs, thus also reducing the ultimate load. Comparing the molded pallets containing combination 1 and combination 2 foot blocks, the molded pallet containing combination 1 foot blocks has a higher ultimate load, indicating that placing the non-molded foot blocks at the four corners of the pallet base is more effective in improving the ultimate load than placing them in the middle of the four sides of the pallet base.

[0054] Preferably, the foot block combination mode of combination 1 is selected.

[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A molded tray, characterized in that, It includes a pallet base, foot blocks, and a support plate, wherein the support plate is fixed to the foot blocks and can fix and support the goods located on the lower layer when goods are stacked; the foot blocks include non-molded foot blocks and molded foot blocks.

2. The molded tray as described in claim 1, characterized in that, The pallet base is rectangular, and the non-molded foot blocks are located at the four corners below the pallet base.

3. The molded tray as described in claim 2, characterized in that, The molding foot block includes a first molding foot block and a second molding foot block; the first molding foot block is located in the middle of the two parallel sides below the tray base; the second molding foot block is located in the middle of the other two parallel sides below the tray base.

4. The molded tray as described in claim 3, characterized in that, The size of the first molding foot block is smaller than that of the second molding foot block; the support plate is fixed to the non-molding foot block, the first molding foot block, or the support plate is fixed to the second molding foot block.

5. The molded tray as described in claim 4, characterized in that, The tray base is also provided with reinforcing ribs, which include a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, a fourth reinforcing rib, and a fifth reinforcing rib.

6. The molded tray as described in claim 5, characterized in that, The first reinforcing rib is distributed along the four sides of the tray base and is connected to the first mold pressing foot block and the second mold pressing foot block.

7. The molded tray as described in claim 6, characterized in that, One end of the second reinforcing rib is connected to the first reinforcing rib, and the other end is connected to the second mold pressing foot block; one end of the third reinforcing rib is connected to the first reinforcing rib, and the other end is connected to the second mold pressing foot block.

8. The molded tray as described in claim 7, characterized in that, One end of the fourth reinforcing rib is connected to the first mold pressing foot block, and the other end is connected to the second mold pressing foot block.

9. The molded tray as described in claim 8, characterized in that, The fifth reinforcing rib is connected to the second mold pressing foot block at both ends.

10. The molded tray as described in claim 9, characterized in that, The goods are barrel-shaped.

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