Plastic molded tray with one-step molded bottom surface

Abstract

The utility model provides a molded plastic pallet with a one-step molded bottom surface, which relates to the technical field of molded plastic pallets and comprises an integrally molded pallet body, the top surface of the pallet body is provided with a projection array for increasing friction, and the bottom surface of the pallet body is provided with support feet distributed in a matrix; weight reduction cavities are formed in the supporting ground feet, and the adjacent supporting ground feet are connected through transverse reinforcing ribs. The tray surface of the tray body is provided with uniformly distributed weight-reducing grooves, so as to solve the problems that the bearing capacity of the tray is obviously reduced due to simple hollowing of the plastic tray at present, and the overall strength is sacrificed although the weight is reduced if a split type assembly process is adopted; and the assembly process increases the labor cost and restricts the large-scale application of the molded tray.

Description

One-piece molded plastic tray with bottom surface Technical Field

[0001] This utility model mainly relates to the field of plastic molded pallet technology, specifically to a plastic molded pallet with a one-time molding bottom surface. Background Technology

[0002] Traditional molded pallets often use solid legs, requiring multiple injection molding or pressing processes to form the desired shape. This results in low production efficiency, high material consumption, and excessive weight. This solid design is prone to stress concentration during transportation, leading to leg cracking, especially under dynamic loads. Furthermore, current processes struggle to achieve integral molding of complex structures, often requiring subsequent processing and increasing manufacturing costs.

[0003] Existing technologies have attempted to address the weight issue by employing hollow designs, but simple hollowing significantly reduces the pallet's load-bearing capacity. Some solutions utilize a modular assembly process, which reduces weight but sacrifices overall strength, and the assembly process increases labor costs. More importantly, these improvements have failed to effectively resolve the conflict between one-piece molding and structural strength, thus hindering the large-scale application of molded pallets.

[0004] It should be noted that the above content falls within the scope of technical knowledge of those skilled in the art. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0005] 1. The technical problem to be solved by the utility model:

[0006] This utility model provides a one-time molded plastic tray with a bottom surface to solve the technical problems existing in the background art.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows: a one-piece molded plastic tray, comprising an integrally molded tray body, wherein the top surface of the tray body is provided with an array of protrusions for increasing friction, and the bottom surface is provided with support feet arranged in a matrix; the support feet are provided with weight-reducing cavities, and adjacent support feet are connected by transverse reinforcing ribs; the tray surface of the tray body is provided with uniformly distributed weight-reducing grooves. In this embodiment, the device is integrally molded by a molding machine. The array of protrusions is used to improve the friction of the top-supported items, and the rectangularly distributed support feet can provide good support force. The weight-reducing grooves and weight-reducing cavities are used to save the material used for the support feet and can also reduce the overall weight of the tray. Furthermore, the weight-reducing cavities can also ensure the support force of the support feet. Through the above structural design, this device can reduce the material usage of the molded tray while ensuring a certain structural strength.

[0009] Furthermore, the protrusion array consists of hemispherical protrusions with a height of 2-5mm, evenly distributed on the top surface of the tray at a spacing of 3×3cm.

[0010] Furthermore, the transverse reinforcing rib is located at the bottom of the supporting foot, and its thickness is 1 / 5 to 1 / 3 of the height of the supporting foot.

[0011] Furthermore, the supporting feet are evenly distributed at the bottom of the pallet body in a 3*3 structure.

[0012] Furthermore, the weight-reducing cavities are located at both ends of the supporting feet. The weight-reducing cavities at the top of the four corner supporting feet are L-shaped, while the weight-reducing cavities at the top of the four bottom supporting feet are shaped like a grid. The L-shaped and shaped weight-reducing cavities together form a square structural cavity.

[0013] Furthermore, the weight-reducing cavities at the top of the four sides of the pallet body are concave, and the corresponding weight-reducing cavities at the bottom are convex, forming a rectangular weight-reducing cavity; the concave and convex weight-reducing cavities are symmetrically arranged on both sides of the same supporting foot, forming a stable mechanical support frame.

[0014] Furthermore, the weight-reducing cavity in the middle of the tray body is set at the bottom in a nine-square grid structure, including mutually perpendicular intersecting transverse reinforcing ribs and longitudinal reinforcing ribs.

[0015] Furthermore, the bottom surface of the tray body and the transverse reinforcing ribs are provided with arrayed concave structural grooves, and the concave structural grooves are interconnected by reinforcing ribs with a thickness of 2-5mm.

[0016] Furthermore, the weight-reducing grooves are square through grooves of uniform size, evenly distributed on the surface of the pallet body in a 2×3 matrix.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0019] This utility model features a rational design. Through the design of weight-reducing cavities, weight-reducing grooves, and concave structural grooves, it reduces material usage and overall weight while maintaining structural strength, saving production costs. Lateral reinforcing ribs, a grid-like support system, and square through-holes enhance compressive strength and distribute stress, making it suitable for forklift and AGV handling and ensuring pallet stability under load. The raised array provides anti-slip properties, the matrix distribution of support feet adapts to different load requirements, and the square through-holes facilitate mechanized operation. The overall design balances efficient handling with applicability to various scenarios.

[0020] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the structure of this utility model;

[0022] Figure 2 is a schematic diagram of the bottom structure of this utility model.

[0023] Figure label:

[0024] 1. Pallet body; 2. Raised array; 3. Support feet; 4. Weight-reducing cavity; 5. Lateral reinforcing ribs; 6. Weight-reducing groove; 7. Concave structural groove. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] It should be noted that structures not described in this invention do not involve the design points and improvement directions of this invention, and can all be achieved using existing technologies known to those skilled in the art.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] Referring to Figures 1-2, the bottom surface of the one-piece molded plastic tray includes an integrally molded tray body 1. The top surface of the tray body 1 is provided with a protrusion array 2 for increasing friction, and the bottom surface is provided with support feet 3 arranged in a matrix. The support feet 3 are provided with weight-reducing cavities 4, and adjacent support feet 3 are connected by transverse reinforcing ribs 5. The tray surface of the tray body 1 is provided with uniformly distributed weight-reducing grooves 6. In this embodiment, the device is integrally molded by a molding machine. The protrusion array 2 is used to improve the friction of the top supporting the item, and the rectangularly distributed support feet 3 can provide good support force. The weight-reducing grooves 6 and weight-reducing cavities 4 are used to save the material used for the support feet 3 and can also reduce the overall weight of the tray. The weight-reducing cavities 4 can also ensure the support force of the support feet 3. Through the above structural design, the device can reduce the material usage of the molded tray, ensure a certain structural strength, solve the problem of the difficulty of one-piece molding process, and change the technical barrier that previously only injection molding could produce plastic trays.

[0032] The raised array 2 consists of hemispherical raised dots with a height of 2-5mm, evenly distributed on the top surface of the pallet at a spacing of 3×3cm. It should be noted that the raised array 2 in this embodiment can be designed with hemispherical raised dots at different spacings according to the size of the pallet, such as a spacing of 5×5cm or 10×10cm. The raised array 2 can be dot-shaped, circular, square, rectangular, triangular, etc., and can be designed according to the specific situation of the goods.

[0033] The transverse reinforcing rib 5 is located at the bottom of the supporting foot 3, and its thickness is 1 / 5 to 1 / 3 of the height of the supporting foot 3. In this embodiment, the transverse reinforcing rib 5 is used to increase the contact area between the supporting foot 3 and the ground, and at the same time, the transverse reinforcing rib 5 is connected into a whole to improve the supporting force.

[0034] The supporting feet 3 are evenly distributed at the bottom of the pallet body 1 in a 3*3 structure. It should be noted that, depending on the purpose of the pallet and the load, the supporting feet 3 can be set to other quantities, such as 4*4, 6*6, etc.

[0035] The weight-reducing cavities 4 are located at both ends of the supporting feet 3. The weight-reducing cavities 4 at the top of the four corners of the supporting feet 3 are L-shaped, while those at the bottom four corners are shaped like a grid. The L-shaped and grid-shaped weight-reducing cavities 4 form a square structure cavity. By creating weight-reducing cavities 4 with different structures at both ends of the supporting feet 3 to form a square structure cavity, the weight of the supporting feet 3 can be reduced by mutual staggering, while maintaining a certain structural strength. The weight-reducing cavities 4 can also be shaped like a grid at the top and L-shaped at the bottom, depending on the specific situation. The combination method provided in this embodiment facilitates one-time forming of plastic pallets on the production line. It should be noted that in this embodiment, the common combination of L-shaped and grid-shaped weight-reducing cavities 4 to form a square structure cavity is exemplified. In actual applications, the arrangement of the weight-reducing cavities 4 at both ends of the supporting feet 3 can be made into different shapes according to the actual situation, all of which fall within the protection scope of this application.

[0036] The weight-reducing cavities 4 at the top of the four sides of the pallet body 1 are concave, and the corresponding bottom weight-reducing cavities 4 are convex, forming a rectangular weight-reducing cavity 4. The concave and convex weight-reducing cavities 4 are symmetrically arranged on both sides of the same supporting foot 3, forming a stable mechanical support frame. Please refer to Figures 1 and 2. In this embodiment, the concave and convex weight-reducing cavities 4 are opened on both sides of the same supporting foot 3 to form a rectangular cavity structure, which reduces the overall weight while ensuring structural strength. The combination method provided in this embodiment facilitates one-time forming of plastic pallets on the production line. It should be noted that the weight-reducing cavities 4 at the top of the four sides of the pallet body 1 can also be convex, and the corresponding bottom weight-reducing cavities 4 can be concave, depending on the specific situation.

[0037] The weight-reducing cavity 4 in the middle of the pallet body 1 is set at the bottom in a nine-square grid structure, including mutually perpendicular horizontal reinforcing ribs and vertical reinforcing ribs. The horizontal and vertical reinforcing ribs form a grid-like support system, which ensures structural strength while reducing overall weight.

[0038] The bottom surface of the tray body 1 and the transverse reinforcing rib 5 is provided with an array of concave structural grooves 7. The concave structural grooves 7 are connected to each other by reinforcing ribs with a thickness of 2-5mm, which ensures structural strength while reducing overall weight.

[0039] The weight-reducing groove 6 is a square through groove of uniform size, evenly distributed on the surface of the pallet body 1 in a 2×3 matrix. Square holes are simpler to process than irregular holes, making them suitable for mass production. They reduce the overall weight while ensuring structural strength. At the same time, the right-angled edges of the square holes can disperse stress, reducing local stress concentration compared to round holes. They are especially suitable for withstanding the longitudinal pressure of forklift forks. The grippers of automated equipment such as AGV robots are mostly designed with right angles, and square holes facilitate precise gripping and transportation.

[0040] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A molded plastic tray with a bottom surface formed in one piece, characterized in that: The pallet includes an integrally formed pallet body (1), the top surface of which is provided with a protrusion array (2) for increasing friction, and the bottom surface is provided with support feet (3) arranged in a matrix; the support feet (3) are provided with weight-reducing cavities (4), and adjacent support feet (3) are connected by transverse reinforcing ribs (5); the pallet surface of the pallet body (1) is provided with uniformly distributed weight-reducing grooves (6); the transverse reinforcing ribs (5) are located at the bottom of the support feet (3), and the thickness is 1 / 5 to 1 / 3 of the height of the support feet (3).

2. The one-piece molded plastic tray with bottom surface as described in claim 1, characterized in that: The protrusion array (2) consists of hemispherical protrusions with a height of 2-5mm, evenly distributed on the top surface of the tray at a spacing of 3×3cm.

3. The one-piece molded plastic tray with bottom surface as described in claim 1, characterized in that: The supporting feet (3) are evenly distributed at the bottom of the pallet body (1) in a 3*3 structure.

4. The one-piece molded plastic tray with bottom surface as described in claim 1, characterized in that: The weight-reducing cavity (4) is located at both ends of the supporting foot (3). The weight-reducing cavity (4) at the top of the supporting foot (3) at the four corners is L-shaped, and the weight-reducing cavity (4) at the top of the supporting foot (3) at the bottom corners is shaped like a grid. The L-shaped and the shaped weight-reducing cavity (4) form a square structure cavity.

5. The one-piece molded plastic tray with bottom surface as described in claim 1, characterized in that: The weight-reducing cavities (4) at the top of the four sides of the pallet body (1) are concave, and the corresponding bottom weight-reducing cavities (4) are convex, forming a rectangular weight-reducing cavity (4) when they are joined together. The concave and convex weight-reducing cavities (4) are symmetrically arranged on both sides of the same support foot (3) to form a stable mechanical support frame.

6. The one-piece molded plastic tray with bottom surface as described in claim 1, characterized in that: The weight-reducing cavity (4) in the middle of the tray body (1) is set at the bottom in a nine-square grid structure, including mutually perpendicular horizontal reinforcing ribs and longitudinal reinforcing ribs.

7. The one-piece molded plastic tray with bottom surface as described in claim 3, characterized in that: The bottom surface of the tray body (1) and the transverse reinforcing rib (5) is provided with an array of concave structural grooves (7), and the concave structural grooves (7) are connected to each other by reinforcing ribs with a thickness of 2-5mm.

8. The one-piece molded plastic tray with bottom surface as described in claim 3, characterized in that: The weight-reducing groove (6) is a square through groove of uniform size, which is evenly distributed on the surface of the pallet body (1) in a 2×3 matrix.

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