Plate base material

Abstract

The utility model relates to the technical field of building profiles, in particular to a plate base material which comprises a steel belt bottom plate and a steel belt cover plate, steel belt side plates which are bent upwards are arranged at the two side ends of the steel belt bottom plate in an extending mode, and a steel belt top plate which is bent towards the direction of the center line of the steel belt bottom plate is arranged at the top ends of the steel belt side plates in an extending mode. The two side ends of the steel belt cover plate in the width direction are fixedly connected with the side ends of the steel belt top plate in a lap joint mode, the side ends of the steel belt top plate extend to be provided with steel belt reinforcing plates bent downwards, and the steel belt reinforcing plates are fixedly connected with the upper surface of the steel belt bottom plate. The plate is made of the steel strip base material, the steel strip is bent and formed, and then the lap joint is fixedly connected, so that compared with traditional plates such as an aluminum alloy casting plate or a wood plywood or a steel plate welding plate in the prior art, the plate has the advantages of good weather resistance, good structural strength, low material cost and good heat insulation performance. And the method is suitable for flow line production.

Description

Technical Field

[0001] This utility model relates to the technical field of building profiles, and in particular to a board substrate. Background Technology

[0002] Current profiles and panels (especially flooring and wall panels) use aluminum alloy integral molding as the base material. The cross-section of the base material has multiple cavities, and there are reinforcing ribs between adjacent cavities. The reinforcing ribs connect the top and bottom plates of the base material, and the surface of the base material is covered with a polymer material surface layer.

[0003] Because aluminum alloys are expensive, using cheaper metals such as steel plates to make sheet metal can reduce costs, but this can result in heavier sheet metal and substandard rust resistance. Alternatively, using other non-metallic materials can lead to higher manufacturing costs (more complex forming processes when producing individual sheet metal, and the need for special connectors instead of welding when assembling adjacent sheet metal) and substandard weather resistance (e.g., embrittlement after prolonged outdoor use).

[0004] Therefore, there is an urgent need for a sheet material substrate structure that has good weather resistance, good structural strength, low material and manufacturing costs, and is suitable for assembly line production. Utility Model Content

[0005] In view of this, the present invention provides a substrate material for a sheet material to solve the problem that traditional sheet materials cannot simultaneously possess the advantages of good weather resistance, good structural strength, low material cost, and low manufacturing cost due to assembly line production.

[0006] This utility model provides a sheet material, including a steel strip base plate and a steel strip cover plate. The steel strip base plate has upwardly bent steel strip side plates extending from both ends in the width direction. The top of each steel strip side plate has a steel strip top plate extending towards the centerline of the steel strip base plate. The two ends of the steel strip cover plate in the width direction overlap and are fixed to the side ends of the steel strip top plate. The upper surfaces of both the steel strip cover plate and the steel strip top plate are used to cover a surface layer. A downwardly bent steel strip reinforcing plate extends from the side end of the steel strip top plate. The steel strip reinforcing plate is fixedly connected to the upper surface of the steel strip base plate. The steel strip side plates, the steel strip top plate, the steel strip reinforcing plate, and the upper surface of the steel strip base plate form a cavity.

[0007] Optionally, the steel strip cover plate is provided with a recessed first groove, the interior of the first groove being wider than the opening, and the first groove is used to fill the surface layer.

[0008] Optionally, the lower surface of the steel strip cover plate is provided with a downwardly protruding part corresponding to the first slot, and the inner wall of the protruding part forms the first slot; the steel strip reinforcing plate is provided with a first step for supporting the protruding part.

[0009] Optionally, the protrusion is in the shape of a cylindrical tube with a notch at the top, and the first step fits against the outer wall of the protrusion.

[0010] Optionally, the protrusion is a trapezoidal tube with a notch at the top, and the first step supports the bottom surface of the protrusion.

[0011] Optionally, the steel strip reinforcing plate includes a rib perpendicular to the steel strip base plate, and the first step is located at the top of the rib.

[0012] Optionally, the bottom of the steel strip reinforcing plate is provided with a bent portion, and the lower surface of the bent portion is flatly fixed to the upper surface of the steel strip base plate.

[0013] Optionally, the side end face of the bent portion is welded and fixed to the upper surface of the steel strip base plate.

[0014] Optionally, the top plate of the steel strip is provided with a recessed second step near the cover plate of the steel strip, the lower surface of the cover plate of the steel strip is flatly fixed to the upper surface of the second step, and the upper surface of the cover plate of the steel strip is flush with the upper surface of the top plate of the steel strip.

[0015] Optionally, the side end of the steel strip cover plate is welded and fixed to the top plate of the steel strip; a transition slope is provided between the upper surface of the second step and the upper surface of the top plate of the steel strip, and the side end face of the steel strip cover plate and the slope form a weld filling groove.

[0016] Optionally, the steel strip reinforcing plate is a double-layer plate that is bent and then bonded together, and the bent part is fixedly connected to the upper surface of the steel strip base plate.

[0017] Optionally, the side end of the steel strip cover plate is fixedly connected to the upward-facing end of the steel strip reinforcing plate.

[0018] Optionally, the top of the steel strip reinforcing plate is provided with a first bending portion, and the two edges of the steel strip cover plate in the width direction are provided with second bending portions. The first bending portion and the second bending portion form a second groove. The interior of the second groove is wider than the opening, and the second groove is used to fill the surface layer.

[0019] Optionally, the steel strip side plate includes a vertical part, a first groove and a second groove. The vertical part is used to slide and limit the material when producing the sheet substrate. The first groove is located between the top of the vertical part and the top plate of the steel strip for filling the surface layer. The second groove is located between the bottom of the vertical part and the bottom plate of the steel strip for connecting adjacent sheet substrates.

[0020] Optionally, the sheet substrate is symmetrical about the centerline of the steel strip base plate along its length.

[0021] Optionally, the surface of the substrate is provided with holes, and the surface layer is riveted to the substrate through the holes.

[0022] Optionally, a steel strip formed by punching the hole is left inside the hole, and a portion of the edge of the steel strip is integrated with the substrate of the sheet material, and the steel strip is recessed into the hole.

[0023] Optionally, the steel strip is recessed into the hole in an inclined plate shape, and the higher end of the steel strip is integrally connected to the substrate material.

[0024] Optionally, the steel strip is recessed into the hole in an arc-shaped plate form, and the opposite ends of the steel strip are integrally connected to the substrate material.

[0025] Optionally, the cavity is filled with foam and / or porous lightweight material.

[0026] Optionally, the foam or the porous lightweight material is a sound-absorbing material and / or a sound-absorbing structure.

[0027] Optionally, the foam or the porous lightweight material is a waterproof material and / or a waterproof structure.

[0028] Optionally, the foam and the porous lightweight material are used to prevent the finished board from sinking in water.

[0029] Optionally, the foam is used as a bottom mold to prevent the surface layer material from leaking through the holes when it is used as a composite surface layer on the board substrate.

[0030] Optionally, the substrate is provided with a number of scratches and / or pits on the surface of the cover layer to increase the friction between the surface of the substrate and the cover layer.

[0031] Optionally, the bends of the sheet substrate cover layer are provided with grooves.

[0032] Optionally, the substrate is provided with burr-bearing attachments in the recessed areas of the filling surface layer, and the burrs on the attachments have various directions and shapes.

[0033] In summary, the technical solution of this utility model has the following advantages compared with the prior art:

[0034] 1. This utility model uses a plate made of steel strip substrate, which is bent and then fixedly connected at the joint. Compared with traditional plates such as aluminum alloy cast plates, wood plywood, or steel plate welded plates in the prior art, it has the advantages of good weather resistance, good structural strength, low material cost and low manufacturing cost, as well as being suitable for assembly line production.

[0035] 2. The steel strip substrate has a symmetrical structure and welding positions. After welding, thermal deformation is basically offset, eliminating the need for post-processing to address deformation issues and reducing production costs.

[0036] 3. The recessed design at the overlap of the steel strip top plate and the steel strip cover plate facilitates the location of welding points (the height difference is clearly tactile during manual welding, and visual identification and precision control are easier during automatic welding).

[0037] 4. The slightly protruding bent part at the bottom of the steel strip reinforcing plate increases the welding angle range of the welding torch in confined spaces.

[0038] 5. The design of bending the bottom end of the steel strip reinforcing plate facilitates the end-to-end seam welding of the steel strip reinforcing plate in confined spaces, and improves the reliability of the fixed connection between the steel strip reinforcing plate and the steel strip base plate.

[0039] 6. The bending length of the bottom end of the steel strip reinforcing plate can be used to adjust the width of the steel strip and the error during the bending process. Different batches of steel strips will not have the same yield strength. Therefore, during the bending process, the elongation or elongation rate will be different, and the steel strip will be too wide or too narrow, resulting in material waste. However, by using the excess elongation rate to calculate the width of the steel strip and bending the actual excess part, it can accommodate materials with different strengths and avoid waste.

[0040] 7. A vertical section is formed by bending the side of the substrate to allow the vertical section to slide and limit the movement of the mold groove during substrate production; a first groove is formed by bending the side of the substrate above the vertical section to fill the surface layer; a second groove is formed by bending the side of the substrate below the vertical section to connect adjacent substrates and achieve splicing of multiple substrates.

[0041] 8. Holes are designed on the upper surface of the substrate. After the surface material overflows into the holes and solidifies, the surface layer can be riveted to the substrate.

[0042] 9. In terms of production process, during the welding of the surface layer, an internal block or sliding mold (which can be obtained by foam molding) is added below the punched position on the upper surface of the substrate to prevent material leakage during the surface layer bonding process and to play a role in shaping the surface layer.

[0043] 10. Sound-absorbing materials and / or foamed structures fill the cavities to achieve a noise reduction effect and improve walking comfort.

[0044] 11. Waterproof materials and / or foamed structures fill the cavities to provide waterproofing and extend product lifespan.

[0045] 12. After the cavity is filled with low-density foam and / or porous lightweight material, the board does not sink in water. When installed near fast-flowing water, it is easy to retrieve and not easy to lose.

[0046] 13. The roughening and burning pits on the surface of the substrate increase the friction with the surface layer, making the surface layer less prone to shrinkage and deformation after molding.

[0047] 14. Serrated patterns are machined at the rounded corners of the substrate surface to increase friction with the edge of the surface layer, resist the shrinkage of the composite surface layer (caused by different coefficients of thermal expansion), and prevent the surface layer from being exposed on the substrate surface after shrinkage.

[0048] 15. Burrs are attached to the recesses of the substrate to fill the surface layer. The burrs have various directions and shapes, which increases the friction with the surface layer. Attached Figure Description

[0049] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the cross-sectional structure of the substrate along the width direction in Example 1.

[0051] Figure 2 This is a schematic diagram of the cross-sectional structure of the first type of sheet substrate along the width direction in Example 2.

[0052] Figure 3 This is a schematic diagram of the cross-sectional structure of the second type of board substrate along the width direction in Example 2.

[0053] Figure 4 This is a schematic diagram of the cross-sectional structure of the third type of board substrate in Example 2 along the width direction.

[0054] Figure 5 yes Figure 4 Enlarged view of section A.

[0055] Figure 6 This is a schematic diagram of the composite surface layer of the board substrate in the embodiment.

[0056] Figure 7 This is a schematic diagram showing holes, steel strips, and a bottom mold on the substrate of the sheet material in the embodiment.

[0057] Figure 8 This is a schematic diagram of the cross-sectional structure of the first type of sheet substrate in Example 3 along the width direction.

[0058] Figure 9 This is a schematic diagram of the cross-sectional structure of the second type of board substrate along the width direction in Example 3.

[0059] Figure 10 This is a schematic diagram of the cross-sectional structure of the third type of board substrate in Example 3 along the width direction.

[0060] In the figure: 1. Steel strip bottom plate; 2. Steel strip side plate; 21. First groove; 22. Second groove; 23. Vertical part; 3. Steel strip top plate; 3. Second step; 32. Inclined surface; 33. Weld filler groove; 4. Steel strip reinforcing plate; 41. Arc-shaped step; 42. Rib; 43. Bending part; 5. Cavity; 6. Steel strip cover plate; 61. First slot; 62. Protrusion; 63. Second bending part; 7. Hole; 8. Steel strip sheet; 9. Bottom mold; 10. Surface layer; 11. Second slot. Detailed Implementation

[0061] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0062] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0063] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0064] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0065] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0066] Example 1

[0067] Please refer to Figure 1This utility model embodiment provides a sheet material substrate, including a steel strip base plate 1, steel strip side plates 2, and steel strip top plate 3, which are connected as a single integral steel plate, and another steel plate: a steel strip cover plate 6. The steel strip side plates 2 are located on both sides of the steel strip base plate 1 in the width direction. The steel strip side plates 2 are formed by extending from both ends of the steel strip base plate 1 in the width direction and bending upwards. The top end of the steel strip side plates 2 extends and bends towards the centerline of the steel strip base plate 1 to form the steel strip top plate 3. The upper surface of the steel strip top plate 3 is used to cover the surface layer. The side ends of the steel strip top plate 3 extend and bend downwards to form a steel strip reinforcing plate 4. The bottom end of the steel strip reinforcing plate 4 contacts and is fixedly connected to the upper surface of the steel strip base plate 1 by welding or bonding. The steel strip side plates 2, steel strip top plate 3, and steel strip reinforcing plate 4 together form a cavity 5 with the upper surface of the steel strip base plate 1.

[0068] The two ends of the steel strip cover plate 6 in the width direction are overlapped and fixed to the side ends of the steel strip top plate 3 by welding or bonding. The upper surface of the steel strip cover plate 6 is also used to cover the surface layer. The steel strip cover plate 6, the steel strip reinforcing plates 4 on both sides, and the steel strip bottom plate 1 below also form a cavity 5.

[0069] This utility model uses a plate made of steel strip substrate. The steel strip is bent and then fixedly connected at the joint. Compared with traditional plates such as aluminum alloy cast plates, wood plywood, or steel plate welded plates in the prior art, it has the advantages of good weather resistance, good structural strength, low material cost, low manufacturing cost, and suitability for assembly line production.

[0070] Example 2

[0071] This embodiment provides a sheet substrate based on Embodiment 1. Please refer to... Figure 2 The steel strip cover plate 6 has a downwardly recessed first groove 61 formed by bending. The inside of the first groove 61 is wider than the opening. When the surface layer is laminated onto the steel strip cover plate 6, the surface layer material fills into the first groove 61 and cures, so that the surface layer and the steel strip cover plate 6 are firmly bonded.

[0072] Along with the first slot 61, a downwardly protruding part 62 is formed on the steel strip cover plate 6. The protruding part 62 corresponds to the position of the first slot 61. When the steel strip cover plate 6 is bent to form the concave first slot 61, a downwardly protruding part 62 will be formed on the lower surface of the steel strip cover plate 6. The inner wall of the protruding part 62 forms the first slot 61.

[0073] Furthermore, the steel strip reinforcing plate 4 includes a first step 41, a rib 42, and a bent portion 43 integrally connected, wherein the first step 41 is located at the top of the steel strip reinforcing plate 4, the bent portion 43 is located at the bottom of the steel strip reinforcing plate 4, and the rib 42 is located between the first step 41 and the bent portion 43. The first step 41 is used to support the protrusion 62. The rib 42 is preferably perpendicular to the steel strip bottom plate 1. In other embodiments, the rib 42 may not be perpendicular to the steel strip bottom plate 1, and the rib 42 may be inclined. The lower surface of the bent portion 43 is flat against the upper surface of the steel strip bottom plate 1 and is fixedly connected by welding or bonding. The welding or bonding position is located between the side end face of the bent portion 43 and the upper surface of the steel strip bottom plate 1. The bent portion 43 may be located on the left or right side of the rib 42, and the position is not limited. The steel strip top plate 3 may also be provided with a groove with the same structure as the first slot 61 for engaging the surface layer, but there is no support below the groove.

[0074] Please refer to Figure 2 The protrusion 62 can be a trapezoidal tube with a notch at the top, and the first step 41 supports the bottom surface of the protrusion 62; please refer to Figure 3 The first step 41 can fit not only with the bottom surface of the trapezoidal tubular protrusion 62, but also with the side surface of the protrusion 62.

[0075] Please refer to Figure 4 The protrusion 62 can also be a cylindrical tube with a notch at the top, and the first step 41 has an arc surface that fits against the outer wall of the protrusion 62. The protrusion 62 can also be other shapes, as long as it can hold the surface layer. This embodiment does not impose specific limitations. The slightly protruding bent portion 43 at the bottom of the steel strip reinforcing plate 4 (i.e., the end of the bent portion 43 maintains a certain distance from the rib plate 42) increases the welding angle range of the welding torch in a confined space. The design of the bent end of the steel strip reinforcing plate 4 at the bottom facilitates the end-to-end welding of the steel strip reinforcing plate 4 in a confined space, improving the reliability of the fixed connection between the steel strip reinforcing plate 4 and the steel strip base plate 1. The length of the bent end of the steel strip reinforcing plate 4 at the bottom can be used to adjust the width of the steel strip and the error during the bending process. Different batches of steel strips cannot have the same yield strength, so the elongation or elongation rate will be different during the bending process, resulting in the steel strip being too wide or too narrow, leading to material waste. However, by using the excess elongation rate to calculate the width of the steel strip and bending the actual excess part, it can accommodate materials of all different strengths and avoid waste.

[0076] Further, please refer to Figure 5The top plate 3 of the steel strip is provided with a recessed second step 31 near the cover plate 6 of the steel strip. The cover plate 6 of the steel strip is welded or bonded to the second step 31. The lower surface of the cover plate 6 is flush with the upper surface of the second step 31, and the upper surface of the cover plate 6 is flush with the upper surface of the top plate 3 of the steel strip, so as to facilitate the simultaneous lamination of the surface layer onto the cover plate 6 and the top plate 3 of the steel strip. The side end of the cover plate 6 is preferably fixed to the top plate 3 of the steel strip by welding. There is a transition slope 32 between the upper surface of the second step 31 and the upper surface of the top plate 3 of the steel strip, and the side end of the cover plate 6 and the slope 32 form a weld filling groove 33. The design of the steel strip top plate 3 sinking to form a second step 31 for overlapping the steel strip cover plate 6 facilitates the location of welding points: the high and low position tactile sensation is obvious during manual welding; during automatic welding, it facilitates visual recognition and precision control judgment, because visual recognition finds the nearest straight edge as a reference for the parallel trajectory. The farther the straight edge is from the welding position, the worse the welding accuracy, and vice versa.

[0077] Further, please refer to Figure 4 The steel strip side plate 2 is bent to form a first groove 21 and a second groove 22. The steel strip side plate 2 between the first groove 21 and the second groove 22 is a vertical part 23. The vertical part 23 is used to slide and limit the material against the inner wall of the mold groove when producing the sheet substrate. When the vertical part 23 is in contact with the inner wall of the mold groove, the composite surface layer 10 material will at most stay at the top of the vertical part 23 (see...). Figure 6 The material will not run downwards beyond the vertical section 23; the first groove 21 is located between the top of the vertical section 23 and the top plate 3 of the steel strip, and is used to fill the surface layer. The first groove 21 has a groove structure with the inside larger than the opening. After the surface layer material is cured in the groove, the surface layer can be tightly connected to the side plate 2 of the steel strip; the second groove 22 is located between the bottom of the vertical section 23 and the bottom plate 1 of the steel strip, and is used to connect adjacent plate substrates, thereby realizing the splicing of multiple plate substrates. The second groove 22 can be used with a connector. One side of the connector is engaged with the second groove 22 of one plate substrate, and the other side of the connector is engaged with the second groove 22 of another plate substrate, thereby realizing the splicing of adjacent plate substrates.

[0078] Furthermore, the aforementioned plate substrate is symmetrical about the centerline of the steel strip base plate 1 along its length, and the bent portions 43 of the two steel strip reinforcing plates 4 are either oriented towards or away from the centerline; the two welding positions of the steel strip cover plate 6 and the steel strip top plate 3 are symmetrical about the centerline, and the two welding positions of the steel strip reinforcing plate 4 and the steel strip base plate 1 are also symmetrical about the centerline, so after welding, the thermal deformation of the plate substrate is basically offset.

[0079] Preferably, the substrate material of the above-mentioned sheet is stainless steel, such as 201 stainless steel or 304 stainless steel, which has good weather resistance.

[0080] Further, please refer to Figure 7The substrate material has multiple holes 7 on its surface used for the composite surface layer 10. The surface layer 10 and the substrate material are riveted together through the holes 7. The surface layer is a polymer material that, after being heated and melted onto the surface of the substrate material, flows into the holes 7 and clumps together within the holes 7 to form rivets. The holes 7 are formed by a punching process. The design can be to not completely cut through the substrate material, but leave a steel strip 8 formed by punching the holes 7 inside the holes 7. The edges of the steel strip 8 are partially integrated with the substrate material, and the steel strip 8 is recessed into the holes 7. The steel strip 8 can support the molten surface layer material flowing into the holes 7, preventing the material from dripping directly into the substrate material and failing to form rivets. After being supported by the steel strip 8, the molten surface layer material overflows from both sides of the steel strip 8 to form two rivets, resulting in a better riveting effect.

[0081] Please refer to Figure 7 There are several forms of steel strip 8. Here are two examples: In the first form, the steel strip 8 is recessed into the hole 7 in the shape of an inclined plate, and the higher end of the steel strip 8 is integrated with the substrate of the plate. In the second form, the steel strip 8 is recessed into the hole 7 in the shape of an arc plate, and the opposite ends of the steel strip 8 are integrated with the substrate of the plate.

[0082] Further, please refer to Figure 6 The cavity 5 of the board substrate can also be filled with foam and / or porous lightweight material. The foam or porous lightweight material serves as sound-absorbing material and / or sound-absorbing structure. In other embodiments, it can also serve as waterproof material and / or waterproof structure, or material with a low density so that the finished board does not sink in water. The foam (or porous lightweight material) with sound-absorbing material and / or sound-absorbing structure filling the cavity 5 provides a sound-absorbing effect and improves walking comfort; the foam (or porous lightweight material) with waterproof material and / or waterproof structure filling the cavity 5 provides a waterproof effect and extends the product's lifespan; the low-density foam and / or porous lightweight material filling the cavity 5 prevents the finished board from sinking in water, making it easy to retrieve and less likely to be lost when installed near fast-flowing water.

[0083] Please refer to Figure 6 and Figure 7 During the welding process of the surface layer 10, an internal stop or sliding mold (which can be a traction rope or a high-strength magnetic attraction) is added below the hole 7 as a bottom mold 9 to prevent material leakage during the surface layer lamination process and to play a shaping role. The foam can be used as a bottom mold 9 to prevent the surface layer material from leaking through the hole 7 when laminating the surface layer on the board substrate.

[0084] Furthermore, the surface of the substrate can be roughened to form scratches or burned to form pits, increasing the friction with the surface layer and making it less prone to shrinkage and deformation after the surface layer is formed; the rounded corners of the substrate surface can be burned or engraved with serrated patterns to increase the friction with the edge of the surface layer, resist the shrinkage of the composite surface layer (caused by different coefficients of thermal expansion), and prevent the surface layer from being exposed on the substrate surface after shrinkage; the recessed areas on the substrate to hold the surface layer are provided with burrs, and the burrs have various directions and shapes, increasing the friction with the surface layer.

[0085] Before the steel strip is bent, it can be subjected to a steel strip pretreatment process: specifically, in the first step of the above-mentioned sheet substrate forming process, the steel strip, which is the outer surface of the sheet substrate, is subjected to one or more of the following treatments: hole cutting, roughening, embossing, burning pits, and burning serrations.

[0086] After the substrate is formed, it can be further processed: the rounded corners of the substrate can be burned or engraved, and burr-bearing attachments can be placed in the recesses of the surface of the substrate covering layer.

[0087] Example 3

[0088] Please refer to Figure 8 This embodiment provides a plate substrate based on embodiment 1. The difference from embodiment 1 is that the steel strip reinforcing plate 4 is bent into a double-layer plate structure; the side end of the steel strip cover plate 6 can be overlapped and fixed with the steel strip top plate 3, or overlapped and fixed with the steel strip reinforcing plate 4, or even overlapped and fixed with both the steel strip top plate 3 and the steel strip reinforcing plate 4 at the same time.

[0089] The steel strip reinforcing plate 4 extends downwards a certain distance and then bends upwards to form a double-layer plate. The bent part is fixedly connected to the upper surface of the steel strip base plate 1 by welding or bonding. The end of the steel strip reinforcing plate 4 faces upwards and is welded and fixed to the lower surface of the steel strip cover plate 6.

[0090] Please refer to Figure 9 When the steel strip top plate 3 does not have a recessed step for placing the side end of the steel strip cover plate 6, the side end of the steel strip cover plate 6, the side end of the steel strip top plate 3, and the top end of the steel strip reinforcing plate 4 can be directly welded and fixed.

[0091] Preferably, the double-layer plate is perpendicular to the steel strip base plate 1. In other embodiments, the double-layer plate may not be perpendicular to the steel strip base plate 1, as long as the double-layer plate, the steel strip base plate 1, the steel strip side plate 2, and the steel strip top plate 3 form a cavity 5. Folding the steel strip reinforcing plate 4 into a double-layer plate can improve its bending resistance, thereby improving the compressive strength of the plate substrate. Further, please refer to... Figure 10The top of the steel strip reinforcing plate 4 is provided with a first bending part 44, and the side end of the steel strip cover plate 6 is provided with a second bending part 63. The first bending part 44 and the second bending part 63 form a second groove 11. The interior of the second groove 11 is wider than the opening. When the surface layer is laminated onto the steel strip cover plate 6, the surface layer material fills into the second groove 11 and cures, so that the surface layer and the steel strip cover plate 6 are firmly bonded.

[0092] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A substrate material for a sheet, characterized in that, The device includes a steel strip base plate and a steel strip cover plate. The steel strip base plate has upwardly bent steel strip side plates extending from both ends in the width direction. The top of each steel strip side plate has a steel strip top plate extending towards the centerline of the steel strip base plate. The two ends of the steel strip cover plate overlap and are fixed to the side ends of the steel strip top plate. The upper surfaces of both the steel strip cover plate and the steel strip top plate are used to cover the surface layer. A downwardly bent steel strip reinforcing plate extends from the side end of the steel strip top plate and is fixedly connected to the upper surface of the steel strip base plate. The steel strip side plates, the steel strip top plate, the steel strip reinforcing plate, and the upper surface of the steel strip base plate form a cavity.

2. The substrate material according to claim 1, characterized in that, The steel strip cover plate is provided with a recessed first groove, the inside of which is wider than the opening, and the first groove is used to fill the surface layer.

3. The substrate material according to claim 2, characterized in that, The lower surface of the steel strip cover plate has a downward protrusion corresponding to the first slot, and the inner wall of the protrusion forms the first slot; the steel strip reinforcing plate has a first step for supporting the protrusion.

4. The substrate material according to claim 3, characterized in that, The protrusion is in the shape of a cylindrical tube with a notch at the top, and the first step is attached to the outer wall of the protrusion.

5. The substrate material according to claim 3, characterized in that, The protrusion is a trapezoidal tube with a notch at the top, and the first step supports the bottom surface of the protrusion.

6. The substrate material according to claim 3, characterized in that, The steel strip reinforcing plate includes a rib plate perpendicular to the steel strip base plate, and the first step is located at the top of the rib plate.

7. The substrate material according to claim 3, characterized in that, The bottom of the steel strip reinforcing plate is provided with a bent part, and the lower surface of the bent part is flatly fixed to the upper surface of the steel strip base plate.

8. The substrate material according to claim 7, characterized in that, The side end face of the bent portion is welded and fixed to the upper surface of the steel strip base plate.

9. The substrate material according to claim 1, characterized in that, The top plate of the steel strip is provided with a recessed second step near the cover plate of the steel strip. The lower surface of the cover plate of the steel strip is flatly fixed to the upper surface of the second step, and the upper surface of the cover plate of the steel strip is flush with the upper surface of the top plate of the steel strip.

10. The substrate material according to claim 9, characterized in that, The side end of the steel strip cover plate is welded and fixed to the top plate of the steel strip; a transition slope is provided between the upper surface of the second step and the upper surface of the top plate of the steel strip, and the side end face of the steel strip cover plate and the slope form a weld filling groove.

11. The substrate material according to claim 1, characterized in that, The steel strip reinforcing plate is a double-layer plate that is bent and then bonded together, and the bent part is fixedly connected to the upper surface of the steel strip base plate.

12. The substrate material according to claim 11, characterized in that, The side end of the steel strip cover plate is fixedly connected to the upward-facing end of the steel strip reinforcing plate.

13. The substrate material according to claim 12, characterized in that, The top of the steel strip reinforcing plate is provided with a first bending portion, and the two edges of the steel strip cover plate in the width direction are provided with second bending portions. The first bending portion and the second bending portion form a second slot. The interior of the second slot is wider than the opening. The second slot is used to fill the surface layer.

14. The substrate material according to claim 1, characterized in that, The steel strip side plate includes a vertical part, a first groove and a second groove. The vertical part is used to slide and limit the material when producing the substrate. The first groove is located between the top of the vertical part and the top plate of the steel strip and is used to fill the surface layer. The second groove is located between the bottom of the vertical part and the bottom plate of the steel strip and is used to connect adjacent substrates.

15. The sheet substrate according to any one of claims 1-14, characterized in that, The substrate material is symmetrical about the centerline of the steel strip base plate along its length.

16. The substrate material according to claim 15, characterized in that, Holes are provided on the surface of the substrate, and the surface layer is riveted to the substrate through the holes.

17. The substrate material according to claim 16, characterized in that, The hole contains a steel strip formed by punching the hole, and a portion of the edge of the steel strip is integrated with the substrate material. The steel strip is recessed into the hole.

18. The substrate material according to claim 17, characterized in that, The steel strip is recessed into the hole in an inclined plate shape, and the higher end of the steel strip is integrally connected to the substrate material.

19. The substrate material according to claim 17, characterized in that, The steel strip is recessed into the hole in an arc-shaped plate, and the two opposite ends of the steel strip are integrally connected to the substrate material.

20. The substrate material according to claim 16, characterized in that, The cavity is filled with foam and / or porous lightweight material.

21. The substrate material according to claim 20, characterized in that, The foam or the porous lightweight material is a sound-absorbing material and / or a sound-absorbing structure.

22. The substrate material according to claim 20, characterized in that, The foam or the porous lightweight material is a waterproof material and / or a waterproof structure.

23. The substrate material according to claim 20, characterized in that, When the foam is used as a composite surface layer on the substrate, it serves as a bottom mold to prevent the surface layer material from leaking through the holes.

24. The substrate material according to claim 15, characterized in that, The substrate material is provided with several scratches and / or pits on the surface of the cover layer to increase the friction between the surface of the substrate material and the cover layer.

25. The substrate material according to claim 15, characterized in that, The bends in the surface layer of the substrate are engraved.

26. The substrate material according to claim 15, characterized in that, The substrate material is provided with burr-like attachments in the recessed areas used to fill the surface layer. The burrs on the attachments have various directions and shapes.

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