Double-layer hollow plate structure

Abstract

The utility model discloses a double-layer hollow plate structure, and relates to the technical field of packaging materials. Comprising a hollow plate, the hollow plate is of a double-layer wall structure, a cavity is formed between the double-layer walls, a plurality of crisscrossed grooves corresponding in position are regularly formed in the two side walls of the hollow plate in a unit mode, and each unit groove is gradually deepened in an arc shape in the depth direction till the unit groove and the corresponding groove in the opposite side are connected together at the intersection point. The arc-shaped grooves which are distributed in a criss-cross mode in the depth direction have the reinforcing effect on the wall faces, the corresponding intersection points of the grooves in the two side walls are connected together, the two walls can be supported, the intersection points of the grooves in the two side walls are connected into a plurality of supporting points to support the whole two wall faces, the grooves in the two wall faces can be reinforced, and the supporting points between the two wall faces can be supported. The board with the hollow interior has high buffering performance and strength, the strength of the board can be adjusted by adjusting the wall thickness, and the board can replace a foam board, a pearl wool board, a honeycomb paperboard and a corrugated board to be used and is wide in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging materials, in particular to a double-layer hollow plate structure. Background Art

[0002] Household appliances such as refrigerators, washing machines, air conditioners, range hoods, and furniture and cabinets are generally protected by foam boards, pearl cotton boards, honeycomb cardboards, and corrugated cardboards during transportation to prevent damage during transportation and handling. However, foam boards, pearl cotton boards, honeycomb cardboards, and corrugated cardboards have the following serious defects when used:

[0003] Foam boards are environmentally unfriendly and brittle, easily breaking during use. Pearl cotton boards are weak and cannot bear heavy weights. Honeycomb cardboards are easily crushed and not waterproof. Corrugated cardboard consumes a large number of trees, has a complex processing process, produces a large amount of wastewater that pollutes the environment, and is not waterproof. Utility Model Content

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-layer hollow plate structure, comprising a hollow plate, wherein the hollow plate is a double-wall structure and a cavity is provided between the double walls, and a plurality of criss-cross grooves are provided on both side walls of the hollow plate, and the grooves are arc-shaped and deepened toward the interior of the cavity to form an arch shape.

[0005] As a preferred technical solution of the present invention, the positions of the grooves on both sides of the hollow plate correspond to each other.

[0006] As a preferred technical solution of the present invention, a plurality of crisscrossing grooves form a grid shape.

[0007] As a preferred technical solution of the present invention, the cross section of the groove is V-shaped, U-shaped or arc-shaped, or a combination thereof.

[0008] As a preferred technical solution of the present invention, the arch-shaped groove is recessed into the interior of the cavity to the deepest point at the intersection of the vertical and horizontal directions.

[0009] As a preferred technical solution of the present invention, the arched grooves on both sides of the hollow plate gradually deepen toward the interior of the cavity in the direction of the vertical and horizontal intersection, until they intersect and connect together at the vertical and horizontal intersection.

[0010] As a preferred technical solution of the present invention, the crisscrossing grooves divide the two side walls of the hollow plate into a plurality of unit areas.

[0011] As a preferred technical solution of the present invention, the unit area is in the shape of one or a combination of two or more of square, circle, triangle, rhombus, polygon and line.

[0012] As a preferred technical solution of the present invention, the grid-like reinforcement composed of a plurality of crisscrossing grooves can also be replaced by a large number of blind hole grooves.

[0013] As a preferred technical solution of the present invention, the depth of the arch-shaped groove recessed into the interior of the cavity is one of greater than zero, equal to zero, or less than zero.

[0014] Compared with the prior art, the present invention provides a double-layer hollow plate structure with the following features:

[0015] Beneficial effects:

[0016] The double-layer hollow board structure has arc-shaped grooves in the depth direction that are crisscrossed and distributed to strengthen the wall surface. The grooves on both side walls are connected together at the corresponding intersections to support the two walls. The intersections of the numerous grooves on both side walls are connected into numerous support points to support the entire two wall surfaces, which can strengthen the grooves on both wall surfaces. The numerous support points between the two wall surfaces provide support. The hollow board inside has strong cushioning performance and strength, and its strength can be adjusted by adjusting the wall thickness. It can replace foam board, pearl cotton board, honeycomb paperboard, and corrugated paperboard, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure:

[0018] Figure 1 This is a structural schematic diagram of a double-layer hollow plate structure proposed by the utility model;

[0019] Figure 2 This is a structural front view of a double-layer hollow plate structure proposed by the utility model;

[0020] Figure 3 This is a cross-sectional view of the unit area structure of a double-layer hollow plate structure proposed in the present invention;

[0021] Figure 4 This is a cross-sectional view of the groove structure of a double-layer hollow plate structure proposed by the present invention;

[0022] Figure 5 This is a cross-sectional view of a double-layer hollow plate structure proposed in the present invention;

[0023] Figure 6This is a schematic diagram of a double-layer hollow plate structure proposed by the present invention, in which the unit area is surrounded by grooves to form a circle;

[0024] Figure 7 This is a schematic diagram of a double-layer hollow plate structure proposed by the present invention, in which the unit area is surrounded by grooves to form a honeycomb shape;

[0025] Figure 8 This is a structural schematic diagram of a second embodiment of a double-layer hollow plate structure proposed by the present utility model;

[0026] Figure 9 This is a side view of the structure of the second embodiment of a double-layer hollow plate structure proposed by the utility model;

[0027] Figure 10 This is a cross-sectional view of the cavity structure of the second embodiment of a double-layer hollow plate structure proposed by the present invention;

[0028] Figure 11 This is a schematic diagram of the unit area structure of the second embodiment of a double-layer hollow plate structure proposed by the present invention;

[0029] Figure 12 This is a cross-sectional view of the groove structure of the second embodiment of a double-layer hollow plate structure proposed by the present invention;

[0030] Figure 13 This is a cross-sectional view of the unit area structure of Example 2 of a double-layer hollow plate structure proposed by the present invention;

[0031] Figure 14 This is a structural schematic diagram of a third embodiment of a double-layer hollow plate structure proposed by the present utility model;

[0032] Figure 15 This is a rear view of the structure of the third embodiment of a double-layer hollow plate structure proposed by the utility model;

[0033] Figure 16 This is a schematic diagram of the groove structure of a third embodiment of a double-layer hollow plate structure proposed by the present invention;

[0034] Figure 17 This is a cross-sectional view of the unit area structure of Example 3 of a double-layer hollow plate structure proposed by the present invention;

[0035] Figure 18 This is a cross-sectional view of the groove structure of Example 3 of a double-layer hollow plate structure proposed by the present invention;

[0036] Figure 19 This is a cross-sectional view of the cavity structure of Example 3 of a double-layer hollow plate structure proposed by the present invention.

[0037] In the figure: 1, hollow plate; 11, cavity; 12, groove; 13, unit area.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Example 1:

[0041] See also Figure 1-7 A double-layer hollow plate structure includes a hollow plate 1, which is a double-wall structure and a cavity 11 is provided between the double walls. Both side walls of the hollow plate 1 are provided with a plurality of criss-cross grooves 12, and the grooves 12 are arc-shaped and deepened toward the interior of the cavity 11 to form an arch shape.

[0042] As a specific technical solution of this embodiment, the positions of the grooves 12 on both sides of the hollow plate 1 correspond to each other, and the positions of the grooves 12 distributed on the inner and outer walls of the hollow plate 1 correspond to each other. The depression of the grooves 12 makes the distance there the shortest, and the wall thickness is thick at the place with short distance during blow molding. In this way, the wall thickness at the grooves 12 is the thickest and the strength is the strongest, just like a layer of staggered support skeleton connected together in a double-layer plate. When the wall is squeezed, the contact distance between the inner and outer wall grooves 12 is the shortest, thereby generating the shortest impedance time and the strongest impedance to the external force impact. Moreover, this corresponding distribution is easy to process and beautiful, which brings convenience to subsequent processing and use.

[0043] As a specific technical solution of this embodiment, a plurality of crisscrossing grooves 12 form a grid shape, and the cross-section of the grooves 12 is one of V-shaped, U-shaped or arc-shaped or a combination thereof. The grooves 12 are interwoven into a network, dividing the entire large area of ​​the wall into a large number of small units, thereby greatly increasing the wall strength. In this way, the wall thickness can be greatly reduced to achieve the required strength, thereby greatly reducing material, reducing weight, saving material costs, and saving transportation costs.

[0044] As a specific technical solution of this embodiment, the arched groove 12 is recessed into the interior of the cavity 11 to the deepest point at the intersection of the vertical and horizontal directions. The arched grooves 12 on both sides of the hollow plate 1 gradually deepen toward the interior of the cavity 11 in the direction of the vertical and horizontal intersections until they intersect and connect together at the vertical and horizontal intersections. The grooves 12 are wavy or arched in the depth direction. This structure is just like the principle of an arch bridge. When the wall is impacted by external force, the arched groove 12 can transmit the external force to the support point, achieving a good shock absorption effect. At the same time, the arched groove 12 makes the inner and outer walls except for the intersection. Except for the points where the inner and outer walls are connected together, other places are not connected together, so that the blowing gas can pass through, thereby ensuring that the hollow plate 1 can be blow-molded, and ensuring that the inner and outer walls are not bonded together, which greatly increases the strength and makes the molding performance good. The inner and outer walls are connected together at the intersection of the grooves 12, which can play the role of supporting points for the inner and outer walls. The intersections of the numerous inner and outer wall grooves 12 are connected into numerous supporting points to support the entire two wall surfaces, so that the inner and outer walls are supported and strengthened, so as to achieve the required strength. This structure can further reduce the wall thickness, save materials and reduce weight.

[0045] As a specific technical solution of this embodiment, the criss-cross grooves 12 divide the two side walls of the hollow board 1 into several unit areas 13, and the unit areas 13 are one or a combination of two or more of square, circle, triangle, rhombus, polygon, and line shapes. One or a combination of two or more of square, circle, triangle, rhombus, polygon, and line shapes can also be set in the plane of the unit area 13 surrounded by the grooves 12. Different patterns of the grooves 12 will produce different distributions of the grooves 12, so that the density of the grooves 12 and the arrangement direction of the grooves 12 will change to cope with different usage scenarios. For example, when the hollow board 1 needs to be bent, a linear pattern groove 12 can be used. If better surface strength is required, it can be set to a regular hexagonal honeycomb curve that is not easy to bend. Different patterns can be set in the plane of the unit area 13 surrounded by the grooves 12, and the plane can be strengthened or decorated.

[0046] As a specific technical solution of this embodiment, the material of the hollow plate 1 is PP, PE or nylon, etc., and is blow-molded using plastics such as PP, PE, nylon or other materials with equivalent effects and easy to blow-mold. The feed die uses a wall thickness controller to control the uniformity of the wall thickness, and large-scale blow molding equipment (length and width can reach several meters) is used to blow-mold into a double-layer hollow structural plate with uniform wall thickness of commonly used specifications.

[0047] As a specific technical solution of this embodiment, the hollow board 1 is formed by blow molding or rotational molding. By adjusting the blow molding die and controlling the wall thickness of the wall thickness controller, hollow boards 1 with various wall thicknesses and strengths can be obtained without reopening the mold or changing the blow molding mold to cope with scenarios with different strength requirements, which greatly simplifies the processing tooling equipment and processing, and has great economic benefits. During the rotational molding process, plastic particles are first put into the mold cavity of the rotational molding machine, and through heating, rotation, pressurized blowing and stretching, the plastic particles are gradually melted and thinned to fit the mold cavity, and a hollow board 1 is formed after cooling. Rotational molding can produce large-sized hollow boards 1, which can supplement large-sized processing that cannot be completed by blow molding.

[0048] As a specific technical solution of this embodiment, the grid-like reinforcement composed of a plurality of crisscrossing grooves 12 can also be replaced by a large number of blind hole grooves.

[0049] As a specific technical solution of this embodiment, the depth of the arch-shaped groove 12 recessed into the interior of the cavity 11 is greater than zero, equal to zero, or less than zero. Some grooves can be selectively deepened or shallower or cancelled, and the strength and cushioning performance of the hollow board can be adjusted to meet different application requirements of the softness and strength of the hollow board.

[0050] Example 2:

[0051] See Figure 8-13 A double-layer hollow plate structure includes a hollow plate 1, the hollow plate 1 is a double-wall structure and a cavity 11 is provided between the double walls, and a plurality of criss-cross grooves 12 are provided on one side wall of the hollow plate 1, and the grooves 12 are arc-shaped and deepened toward the interior of the cavity 11 to form an arch shape.

[0052] As a specific technical solution of this embodiment, a plurality of crisscrossing grooves 12 form a grid shape.

[0053] In this embodiment, the grooves 12 are interwoven into a network, dividing the entire large area of ​​the wall into numerous small units, thereby greatly increasing the wall strength. In this way, the wall thickness can be greatly reduced to achieve the required strength, thereby greatly reducing material, reducing weight, saving material costs, and saving transportation costs.

[0054] As a specific technical solution of this embodiment, the cross section of the groove 12 is V-shaped, U-shaped or arc-shaped, or a combination thereof.

[0055] As a specific technical solution of this embodiment, the arch-shaped groove 12 is recessed into the cavity 11 to the deepest point at the intersection of the vertical and horizontal directions.

[0056] As a specific technical solution of this embodiment, the arched groove 12 on one side of the hollow plate 1 gradually deepens toward the interior of the cavity 11 in the direction of the vertical and horizontal intersection until it contacts and connects with the other side wall of the hollow plate 1.

[0057] In this embodiment, the groove 12 is arched in the depth direction. This structure is just like the principle of an arch bridge. When the wall is impacted by external force, the arched groove 12 can transmit the external force to the support point, thereby achieving a good shock absorption effect. The two side walls are connected together at the intersection of the groove 12, which can act as support points for the two side walls. The intersections of the grooves 12 on the two side walls are connected into numerous support points to support the entire two wall surfaces, thereby strengthening the support between the two side walls to achieve the required strength. This structure can further reduce the wall thickness, save materials, and reduce weight.

[0058] As a specific technical solution of this embodiment, the crisscrossing grooves 12 divide one side wall of the hollow plate 1 into a plurality of unit areas 13 .

[0059] As a specific technical solution of this embodiment, the unit area 13 is in the shape of a square, a circle, a triangle, a diamond, a polygon, or a line, or a combination of two or more of the above.

[0060] In this embodiment, different patterns of the grooves 12 will produce different distributions of the grooves 12, so that the density of the grooves 12 and the arrangement direction of the grooves 12 will change to cope with different usage scenarios. For example, when the hollow board 1 needs to be bent, a straight pattern groove 12 can be used. If better surface strength is required, it can be set to a regular hexagonal honeycomb curve that is not easy to bend; and different patterns are set in the plane of the unit area 13 surrounded by the grooves 12, so that the plane can be strengthened or decorated. The hollow board 1 is formed by blow molding or rotational molding.

[0061] Compared with the above embodiment, the hollow plate 1 in this embodiment is only provided with a plurality of crisscross grooves 12 on one side wall. Through this structure, the crisscross grooves 12 on one side wall have a reinforcing effect on the wall surface. The grooves 12 deepen in an arc shape toward the inside of the cavity until they are connected together at the intersection of the other side wall to support the two side walls. The intersections of the numerous grooves 12 between the two side walls are connected into numerous support points to support the entire two wall surfaces. The grooves 12 on the two wall surfaces can be strengthened, and the numerous support points between the two wall surfaces support the hollow plate inside, which is light in weight and high in strength, greatly saving materials and reducing manufacturing costs.

[0062] Example 3:

[0063] See also Figure 14-19A double-layer hollow plate structure includes a hollow plate 1. The hollow plate 1 is a double-wall structure and a cavity 11 is provided between the double walls. A plurality of grooves 12 are provided on one side wall of the hollow plate 1. The grooves 12 are segmented and each segment is arc-shaped and deepened toward the interior of the cavity at both ends to form an arch shape.

[0064] As a specific technical solution of this embodiment, the intersection of the two sections of the groove 12 is the deepest and is connected to the other side wall of the hollow plate 1 at the intersection.

[0065] In this embodiment, the groove 12 is arched in the depth direction. This structure is just like the principle of an arch bridge. When the wall is impacted by external force, the arched groove 12 can transmit the external force to the support point, thereby achieving a good shock absorption effect. The two side walls are connected together at the intersection of the groove 12, which can play the role of support points for the two side walls. The intersections of the grooves 12 on the two side walls are connected into a large number of support points to support the entire two wall surfaces, thereby strengthening the support between the two side walls. This structural design strengthens the two side walls while ensuring that the internal hollow forms a cavity, which can meet the gas flow during blow molding and also obtains good cushioning performance. In this way, the required strength is achieved. This structure can further reduce the wall thickness, save materials, and reduce weight.

[0066] As a specific technical solution of this embodiment, the grooves 12 on the wall surface of one side of the hollow plate 1 can be distributed in a straight line, or in a broken line or curve.

[0067] In this embodiment, the distribution shapes of the grooves 12 are different, so that the density of the grooves 12 and the arrangement direction of the grooves 12 change to cope with different usage scenarios. For example, when the hollow plate 4 needs to be bent, a linear distribution groove 12 can be used. If better surface strength is required, it can be set to a broken line or curved distribution that is not easy to bend.

[0068] As a specific technical solution of this embodiment, the cross section of the groove 12 is V-shaped, U-shaped or arc-shaped, or a combination thereof.

[0069] As a specific technical solution of this embodiment, a plurality of grooves 12 divide a side wall of the hollow plate 1 into a plurality of unit areas 13 .

[0070] In this embodiment, a large number of grooves 12 are provided on the wall surface on one side of the hollow plate 1. The grooves 12 divide the entire large area of ​​the wall surface into a large number of small units, thereby greatly increasing the wall strength. In this way, the wall thickness can be greatly reduced to achieve the required strength, thereby greatly reducing the material, reducing the weight, saving material costs, and saving transportation costs. The hollow plate 1 is formed by blow molding or rotational molding, which is the same as the molding process in the above embodiment.

[0071] Compared with the above embodiment, the grooves 12 on one side wall of the hollow plate 1 in this embodiment are arranged longitudinally or transversely. The grooves 12 distributed on one side wall have a reinforcing effect on the wall surface. The grooves 12 deepen in an arc shape toward the inside of the cavity 11 until they are connected together at the other side wall at the intersection, which can support the two side walls. The intersections of the numerous grooves 12 between the two side walls are connected into numerous support points to support the entire two wall surfaces, which can be strengthened by the wall grooves 12. The numerous support points between the two wall surfaces support the internal hollow plate, which is light in weight and strong in strength, and greatly saves materials.

[0072] To sum up, the double-layer hollow board structure and the criss-cross distribution of the grooves 12 have a reinforcing effect on the wall surface. The corresponding intersections of the grooves 12 on the inner and outer side walls of the hollow board 1 are connected together, which can support the inner and outer walls. The intersections of the numerous inner and outer wall grooves 12 are connected into numerous support points to support the entire two wall surfaces, which can be strengthened by the grooves 12 on both walls. The two wall surfaces are supported by numerous support points. The internal hollow board is light in weight and strong in strength, which greatly saves materials and has strong cushioning performance and strength. The wall thickness can be easily adjusted to adjust the cushioning performance and strength without re-opening the mold. It can replace foam board, pearl cotton board, honeycomb cardboard, and can also be used instead of corrugated cardboard. It has a recyclable function, improves economic benefits, and has broad application prospects.

[0073] It should be noted that, in this document, terms such as "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0074] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer hollow plate structure, comprising a hollow plate (1), characterized in that: The hollow plate (1) has a double-wall structure and a cavity (11) is provided between the double walls. A plurality of crisscrossing grooves (12) are provided on both side walls of the hollow plate (1), and the grooves (12) deepen in an arc shape toward the interior of the cavity (11) to form an arch shape.

2. The double-layer hollow plate structure according to claim 1, characterized in that: The grooves (12) on both sides of the hollow plate (1) are positioned correspondingly.

3. The double-layer hollow plate structure according to claim 1, characterized in that: A plurality of crisscross grooves (12) form a grid shape.

4. The double-layer hollow plate structure according to claim 1, characterized in that: The cross section of the groove (12) is V-shaped, U-shaped or arc-shaped, or a combination thereof.

5. The double-layer hollow plate structure according to claim 1, characterized in that: The arched groove (12) is recessed into the cavity (11) to the deepest point at the intersection of the vertical and horizontal directions.

6. The double-layer hollow plate structure according to claim 1, characterized in that: The arched grooves (12) on both sides of the hollow plate (1) gradually deepen towards the vertical and horizontal intersection points and towards the interior of the cavity (11) until they intersect and connect at the vertical and horizontal intersection points.

7. The double-layer hollow plate structure according to claim 1, characterized in that: The crisscross grooves (12) divide the two side walls of the hollow plate (1) into a plurality of unit areas (13).

8. The double-layer hollow plate structure according to claim 7, characterized in that: The unit area (13) is in the shape of a square, a circle, a triangle, a rhombus, a polygon, or a line, or a combination of two or more of the above.

9. The double-layer hollow plate structure according to claim 1, characterized in that: The depth of the arch-shaped groove (12) recessed into the cavity (11) is one of greater than zero, equal to zero, or less than zero.

Images