Plate base material and forming process thereof

Abstract

The invention relates to the technical field of building profiles, in particular to a plate base material and a forming process thereof.The plate base material comprises a steel belt bottom plate and a steel belt cover plate, and the two side ends of the steel belt bottom plate extend to be provided with steel belt side plates bent upwards; the top ends of the steel belt side plates extend to be provided with steel belt top plates bent towards the center line direction of the steel belt bottom plate, 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 plates in a lap joint mode, the side ends of the steel belt top plates 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. According to the plate made of the steel strip base material, the steel strip is bent and formed, then the lap joint is fixedly connected, and compared with an aluminum alloy casting plate or a wood plywood or a steel plate welding plate and other traditional plates in the prior art, the plate has the advantages of being good in weather resistance, good in structural strength, low in material cost and suitable for flow line production.

Description

Technical Field

[0001] The invention relates to the technical field of building profiles, in particular to a plate substrate and a molding process thereof. Background Art

[0002] Current profile panels (especially floors and wall panels) use aluminum alloy as a base material. The base material has multiple cavities in its cross section, with 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] Due to the high cost of aluminum alloy materials, in order to reduce costs, cheaper metal materials such as steel plates are used to make plates, which will result in problems such as increased weight of the plates and substandard anti-corrosion performance; or other non-metallic materials are used to make plates, which will also result in higher manufacturing costs (the molding process when producing a single plate becomes complicated, and the connection between adjacent plates during assembly cannot be done by welding but requires special connectors) and substandard weather resistance (for example, embrittlement after long-term outdoor use).

[0004] Therefore, there is an urgent need for a plate substrate structure with good weather resistance, good structural strength, low material cost and manufacturing cost and suitable for assembly line production. Summary of the invention

[0005] In view of this, the present invention provides a board substrate to solve the problem that traditional boards cannot have the advantages of good weather resistance, good structural strength, low material cost, assembly line production, and low manufacturing cost.

[0006] The present invention provides a plate substrate, comprising a steel strip bottom plate and a steel strip cover plate, wherein the two side ends in the width direction of the steel strip bottom plate are extended with upwardly bent steel strip side plates, the top end of the steel strip side plates is extended with a steel strip top plate bent toward the center line direction of the steel strip bottom plate, the two side ends in the width direction of the steel strip cover plate are overlapped and fixed with the side ends of the steel strip top plate, the upper surfaces of the steel strip cover plate and the steel strip top plate are both used for covering the surface layer, the side ends of the steel strip top plate are extended with downwardly bent steel strip reinforcement plates, the steel strip reinforcement plates are fixedly connected to the upper surface of the steel strip bottom plate, and the steel strip side plates, the steel strip top plate, the steel strip reinforcement plates and the upper surface of the steel strip bottom plate form a cavity.

[0007] Optionally, a first concave slot is provided on the steel belt cover plate, the interior of the first slot is wider than the mouth, and the first slot is used to fill the surface layer.

[0008] Optionally, a downwardly protruding portion is provided on the lower surface of the steel belt cover plate corresponding to the first slot, and the inner wall of the protruding portion surrounds the first slot; and a first step for supporting the protruding portion is provided on the steel belt reinforcement plate.

[0009] Optionally, the protrusion is in the shape of a circular tube with a notch on the top, and the first step is in contact with the outer wall of the protrusion.

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

[0011] Optionally, the steel belt reinforcement plate includes a rib plate perpendicular to the steel belt bottom plate, and the first step is located on the top of the rib plate.

[0012] Optionally, a bending portion is provided at the bottom of the steel belt reinforcement plate, and the lower surface of the bending portion is flatly fixed to the upper surface of the steel belt bottom plate.

[0013] Optionally, the side end surface of the bending portion is welded and fixed to the upper surface of the steel belt bottom plate.

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

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

[0016] Optionally, the steel belt reinforcement plate is a double-layer plate that is bent and bonded together, and the bending portion is fixedly connected to the upper surface of the steel belt bottom plate.

[0017] Optionally, the side end of the steel belt cover plate is fixedly connected to the upward end of the steel belt reinforcement plate.

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

[0019] Optionally, the steel strip side plate includes a vertical portion, a first groove and a second groove, the vertical portion is used to slide and limit with the inner side wall of the mold slide when producing a plate substrate, the first groove is located between the top end of the vertical portion and the steel strip top plate for filling the surface layer, and the second groove is located between the bottom end of the vertical portion and the steel strip bottom plate for connecting adjacent plate substrates.

[0020] Optionally, the plate substrate is symmetrical about a midline along the length direction of the steel strip bottom plate.

[0021] Optionally, holes are provided on the surface of the sheet material base, and the surface layer and the sheet material base are riveted together through the holes.

[0022] Optionally, a steel strip formed by punching the hole is left in the hole, a portion of the edge of the steel strip is connected to the plate substrate as a whole, and the steel strip is recessed in 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 connected to the plate substrate as a whole.

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

[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 foamed material or the porous lightweight material is a waterproof material and / or a waterproof structure.

[0028] Optionally, the foamed material and the porous lightweight material are used to make the finished board material non-sinking in water.

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

[0030] Optionally, a plurality of scratches and / or pits are arranged on the surface of the sheet material substrate for covering the surface layer, so as to increase the friction between the surface of the sheet material substrate and the surface layer.

[0031] Optionally, the bending part of the covering surface layer of the plate substrate is provided with engravings.

[0032] Optionally, an appendage with burrs is provided at the inner concave portion of the sheet material used to fill the surface layer, and the burrs on the appendages have various directions and shapes.

[0033] The second object of the present invention is to provide a sheet material forming process, the steps of which are as follows:

[0034] In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form a steel strip side plate, and the unbent portion of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the steel strip bottom plate;

[0035] In the second step, the end of the steel belt reinforcement plate is welded or glued to the upper surface of the steel belt bottom plate, and the two sides of the steel belt cover plate in the width direction are welded or glued to the steel belt top plates on both sides.

[0036] The third object of the present invention is to provide another sheet material forming process, the steps of which are as follows:

[0037] In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form the steel strip side plates, and the unbent part of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, and the steel strip reinforcement plate is bent into a structure in which double-layer plates are attached to each other until the bending part of the double-layer plate contacts the upper surface of the steel strip bottom plate;

[0038] The second step is to weld or glue the double-layer plate bending part of the steel belt reinforcement plate to the upper surface of the steel belt bottom plate, and at the same time weld or glue both sides of the steel belt cover plate in the width direction to the steel belt top plates or the steel belt reinforcement plates on both sides.

[0039] Optionally, in the first step above, before entering the cold-bending forming equipment, one side of the outer surface of the first steel strip and / or the second steel strip as the plate substrate is subjected to one or more of the following treatments: cutting holes, roughening, embossing, burning pits, and burning serrations.

[0040] Optionally, the forming process of the plate substrate further includes:

[0041] The third step is to fill the cavity with foam and / or porous light material, wherein the material of the foam or porous light material has one or more properties of sound absorption, waterproof property and property of making the sheet substrate non-sinking, and the structure of the foam or porous light material has one or more properties of sound absorption, waterproof property and property of making the sheet substrate non-sinking;

[0042] The fourth step is to form a bottom mold below the holes on the steel belt using foam or porous lightweight material to prevent a large amount of material from leaking into the cavity through the holes during the composite process of the surface layer material.

[0043] In summary, the technical solution of the present invention has the following advantages compared with the prior art:

[0044] 1. The present invention adopts a plate made of a steel strip substrate, which is bent and formed by the steel strip and then fixed at the overlap. Compared with traditional plates such as aluminum alloy cast plates, wood plywood plates, or steel plate welded plates in the prior art, the present invention has the advantages of good weather resistance, good structural strength, low material cost and low manufacturing cost, and is suitable for assembly line production.

[0045] 2. The structure of the steel strip substrate is symmetrical, and the welding position is also symmetrical. After welding, the thermal deformation is basically offset, and there is no need to deal with the deformation problem later, which reduces the production cost.

[0046] 3. The sinking design where the steel belt top plate overlaps the steel belt cover plate makes it easier to find the welding points (the high and low positions are clearly felt during manual welding, and are easy to visually identify and determine the accuracy during automatic welding).

[0047] 4. The bent portion at the bottom of the steel strip reinforcement plate extends slightly, increasing the angle range of the welding gun in a narrow space.

[0048] 5. The design of the bent end of the bottom of the steel belt reinforcement plate facilitates the end jointing and welding of the steel belt reinforcement plate in a narrow space, and improves the reliability of the fixed connection between the steel belt reinforcement plate and the steel belt bottom plate.

[0049] 6. The length of the bend at the bottom end of the steel belt reinforcement plate can be used to adjust the width of the steel belt and the error in the bending process; the yield strength of different batches of steel belts cannot be exactly the same, so during the bending process, the extension or elongation is different, and the steel belt will eventually be too wide or too narrow, resulting in waste of materials. The steel belt width is calculated using the excess elongation of the belt, and the actual excess part is bent, which can adapt to all materials of different strengths and avoid waste.

[0050] 7. A vertical portion is bent and formed on the side of the sheet substrate so that the vertical portion and the inner side wall of the mold slide can be slidably limited during the production of the substrate; a first groove is bent and formed on the side of the sheet substrate above the vertical portion so as to fill the surface layer; a second groove is bent and formed on the side of the sheet substrate below the vertical portion so as to connect adjacent sheet substrates and realize the splicing of multiple sheets.

[0051] 8. Holes are designed on the upper surface of the sheet substrate. After the surface layer material overflows into the holes and solidifies into shape, the surface layer and the sheet substrate can be riveted.

[0052] 9. In the production process, during the welding of the surface layer, a built-in block or sliding mold is added below the punching position on the upper surface of the board substrate as a bottom mold (which can be obtained by forming a foam material) to prevent material from running or leaking during the surface layer composite process, and to play a role in shaping the surface layer.

[0053] 10. The sound-absorbing material and / or the foamed material of the sound-absorbing structure fill the cavity to achieve a quieting effect and improve walking comfort.

[0054] 11. The foamed material of the waterproof material and / or waterproof structure fills the cavity to play a waterproof role and extend the life of the product.

[0055] 12. After the cavity is filled with low-density foam and / or porous lightweight materials, the board will not sink in water. When installed near water with fast currents, it is easy to salvage and not easy to lose.

[0056] 13. The roughening and burning pits on the surface of the board substrate increase the friction with the surface layer, making it less likely for the surface layer to shrink and deform after forming.

[0057] 14. The curved corners of the surface of the board substrate are processed into serrated patterns to increase the friction with the edge of the surface layer, resist the shrinkage of the composite surface layer (caused by different thermal expansion coefficients), and prevent the surface of the board substrate from being exposed after the surface layer shrinks.

[0058] 15. The burred attachment is placed on the board substrate to fill the concave part of the surface layer. The burrs have various directions and shapes, which increases the friction with the surface layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0060] Figure 1 It is a schematic diagram of the cross-sectional structure of the plate substrate along the width direction in Example 1.

[0061] Figure 2 It is a schematic diagram of the cross-sectional structure of the first type of plate substrate in Example 2 along the width direction.

[0062] Figure 3 It is a schematic diagram of the cross-sectional structure of the second type of plate substrate along the width direction in Example 2.

[0063] Figure 4 It is a schematic diagram of the cross-sectional structure of the third type of plate substrate in Example 2 along the width direction.

[0064] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0065] Figure 6 It is a schematic diagram of the board substrate after being composited with the surface layer in the embodiment.

[0066] Figure 7 Schematic diagram showing holes, steel strips and bottom mold on the plate substrate in the embodiment.

[0067] Figure 8 It is a schematic diagram of the cross-sectional structure of the first type of plate substrate in Example 3 along the width direction.

[0068] Fig. 9 It is a schematic diagram of the cross-sectional structure of the second type of sheet material substrate in Example 3 along the width direction.

[0069] Fig.10 It is a schematic diagram of the cross-sectional structure of the third type of plate substrate along the width direction in Example 3.

[0070] In the figure: steel strip bottom plate 1, steel strip side plate 2, first groove 21, second groove 22, vertical portion 23, steel strip top plate 3, second step 31, inclined surface 32, solder filling groove 33, steel strip reinforcement plate 4, arc step 41, rib plate 42, bending portion 43, cavity 5, steel strip cover plate 6, first slot 61, protrusion 62, second bending portion 63, hole 7, steel strip sheet 8, bottom mold 9, surface layer 10, second slot 11. DETAILED DESCRIPTION

[0071] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0073] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0074] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0075] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0076] Example 1

[0077] Please refer to Figure 1 The embodiment of the present invention provides a plate substrate, including a steel strip bottom plate 1, a steel strip side plate 2 and a steel strip top plate 3 connected as an 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 bottom plate 1 in the width direction, and the steel strip side plates 2 are formed by extending the two side ends of the steel strip bottom plate 1 in the width direction and bending upward, and the top end of the steel strip side plates 2 is extended and bent toward the center line direction of the steel strip bottom plate 1 to form a steel strip top plate 3, and the upper surface of the steel strip top plate 3 is used to cover the surface layer, and the side end of the steel strip top plate 3 is extended and bent downward to form a steel strip reinforcement plate 4, and the bottom end of the steel strip reinforcement plate 4 is in contact with and fixedly connected to the upper surface of the steel strip bottom plate 1, and the connection method is welding or bonding, and the steel strip side plates 2, the steel strip top plate 3 and the steel strip reinforcement plate 4 together form a cavity 5 with the upper surface of the steel strip bottom plate 1.

[0078] The two side ends of the steel belt cover plate 6 in the width direction are overlapped and fixed with the side ends of the steel belt top plate 3 by welding or bonding, and the upper surface of the steel belt cover plate 6 is also used to cover the surface layer. The steel belt cover plate 6 and the steel belt reinforcement plates 4 on both sides and the steel belt bottom plate 1 below also form a cavity 5.

[0079] In addition, this embodiment also relates to a forming process of the above-mentioned sheet material substrate, and the steps are as follows:

[0080] In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form a steel strip side plate, and the unbent portion of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the steel strip bottom plate;

[0081] In the second step, the end of the steel belt reinforcement plate is welded or glued to the upper surface of the steel belt bottom plate, and the two sides of the steel belt cover plate in the width direction are welded or glued to the steel belt top plates on both sides.

[0082] The present invention adopts a plate made of a steel strip base material, which is bent and formed by the steel strip and then fixed and connected at the overlap. Compared with traditional plates such as aluminum alloy cast plates, wood plywood plates, 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 and is suitable for assembly line production.

[0083] Example 2

[0084] This embodiment provides a plate substrate based on the embodiment 1. Figure 2 A downwardly concave first groove 61 is formed on the steel strip cover plate 6 by bending. The interior of the first groove 61 is wider than the mouth. When the surface layer is compounded on the steel strip cover plate 6, the surface layer material is filled into the first groove 61 and solidified, so that the surface layer and the steel strip cover plate 6 can be firmly combined.

[0085] A downward convex protrusion 62 is formed on the steel strip cover plate 6 together with the first slot 61, and the position of the protrusion 62 corresponds to the first slot 61. When the steel strip cover plate 6 is bent to form the concave first slot 61, a downward convex protrusion 62 is formed on the lower surface of the steel strip cover plate 6, and the inner wall of the protrusion 62 surrounds the first slot 61.

[0086] Further, the steel strip reinforcing plate 4 includes a first step 41, a rib 42 and a bent portion 43 which are connected as one body, wherein the first step 41 is located at the top end of the steel strip reinforcing plate 4, the bent portion 43 is located at the bottom end 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, and the welding position or bonding position is located between the side end surface 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; a groove with the same structure as the first clamping groove 61 may also be provided on the steel strip top plate 3, which is used to clamp the surface layer, but there is no support under the groove.

[0087] Please refer to Figure 2 The shape of the protrusion 62 may 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 In addition to being in contact with the bottom surface of the trapezoidal tubular protrusion 62 , the first step 41 may also be in contact with the side surface of the protrusion 62 .

[0088] Please refer to Figure 4 The shape of the protrusion 62 can also be a circular tube with a notch on the top, and the first step 41 has an arc surface that is in contact with the outer wall of the protrusion 62. The protrusion 62 can also be in other shapes as long as it can clamp the surface layer, and this embodiment does not make any specific restrictions. The bent portion 43 at the bottom of the steel strip reinforcement plate 4 extends slightly (that is, the end of the bent portion 43 maintains a certain distance from the rib plate 42), which increases the angle range of welding of the welding gun in a narrow space; the design of the bent end of the bottom end of the steel strip reinforcement plate 4 facilitates the end seam and welding of the steel strip reinforcement plate 4 in a narrow space, and improves the reliability of the fixed connection between the steel strip reinforcement plate 4 and the steel strip bottom plate 1; the length of the bent end of the bottom end of the steel strip reinforcement plate 4 can be used to adjust the steel strip width and the error in the bending process; the yield strength of different batches of steel strips cannot be exactly the same, so during the bending process, the extension or elongation is different, and the steel strip will eventually be too wide or too narrow, resulting in waste of material, and the steel strip width is calculated using the excess elongation of the strip and the actual excess part is bent, which can adapt to all materials of different strengths and avoid waste.

[0089] For further information, please refer to Figure 5The steel strip top plate 3 is provided with a sunken second step 31 near the steel strip cover plate 6, and the steel strip cover plate 6 is welded or bonded to the second step 31; the lower surface of the steel strip cover plate 6 is flatly fixed to the upper surface of the second step 31, and the upper surface of the steel strip cover plate 6 is flush with the upper surface of the steel strip top plate 3, so that the surface layer is simultaneously composited on the steel strip cover plate 6 and the steel strip top plate 3. The side end of the steel strip cover plate 6 and the steel strip top plate 3 are preferably fixed by welding, and there is a transitional inclined surface 32 between the upper surface of the second step 31 and the upper surface of the steel strip top plate 3, and the side end of the steel strip cover plate 6 and the inclined surface 32 surround a solder 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 search for welding points: the high and low positions are clearly felt during manual welding; it is convenient for visual recognition and precision control judgment during automatic welding, because visual recognition is to find 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.

[0090] For further information, 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 portion 23. The vertical portion 23 is used to slide and limit with the inner side wall of the mold chute when producing the plate substrate. When the vertical portion 23 is attached to the inner side wall of the mold chute, the composite surface layer 10 material will only stay at the top of the vertical portion 23 at most (see Figure 6 ), and the material will not run downward over the vertical portion 23; the first groove 21 is located between the top of the vertical portion 23 and the steel strip top plate 3, and is used to fill the surface layer. The first groove 21 is a groove structure with an inner portion larger than the mouth. After the surface layer material is solidified in the groove, a tight connection between the surface layer and the steel strip side plate 2 can be achieved; the second groove 22 is located between the bottom end of the vertical portion 23 and the steel strip bottom plate 1, and is used to connect adjacent sheet substrates, thereby realizing the splicing of multiple sheet substrates. The second groove 22 can be used in conjunction with a connecting piece, and one side of the connecting piece is matched with the second groove 22 of a sheet substrate, and the other side of the connecting piece is matched with the second groove 22 of another sheet substrate, thereby realizing the splicing of adjacent sheet substrates.

[0091] Furthermore, the above-mentioned plate substrate is symmetrical about the center line of the length direction of the steel belt bottom plate 1, and the bending portions 43 of the two steel belt reinforcement plates 4 are both arranged toward the center line or are both arranged away from the center line; the two welding positions of the steel belt cover plate 6 and the steel belt top plate 3 are symmetrical about the center line, and the two welding positions of the steel belt reinforcement plate 4 and the steel belt bottom plate 1 are also symmetrical about the center line, so after welding, the thermal deformation of the plate substrate is basically offset.

[0092] Preferably, the material of the plate substrate is stainless steel, such as 201 stainless steel or 304 stainless steel, which has good weather resistance.

[0093] For further information, please refer to Figure 7The sheet substrate has a plurality of holes 7 on its surface for compounding the surface layer 10, and the surface layer 10 and the sheet substrate are riveted through the holes 7; the surface layer is a polymer material, which will flow into the holes 7 after being heated and melted and compounded on the surface of the sheet substrate, and form rivets after agglomerating in the holes 7. The holes 7 are formed by a punching process, and the sheet substrate may be designed not to completely cut through, but to leave a steel strip 8 formed by punching the holes 7 in the holes 7, and the edge of the steel strip 8 is partially connected to the sheet substrate, and the steel strip 8 is recessed in the holes 7; the steel strip 8 can hold the molten surface layer material flowing into the holes 7, preventing the material from directly dripping into the sheet substrate and failing to form rivets, and the molten surface layer material is held by the steel strip 8 and overflows from both sides of the steel strip 8 to form two rivets, so that the riveting effect is better.

[0094] Please refer to Figure 7 The steel strip 8 can be in various forms, and two examples are given below: in the first form, the steel strip 8 is recessed into the hole 7 in an inclined plate shape, and the higher end of the steel strip 8 is connected to the plate substrate as a whole; in the second form, the steel strip 8 is recessed into the hole 7 in an arc-shaped plate shape, and the opposite ends of the steel strip 8 are connected to the plate substrate as a whole.

[0095] For further information, please refer to Figure 6 The cavity 5 of the board substrate can also be filled with foam and / or porous light material. The foam or porous light material is a sound-absorbing material and / or a sound-absorbing structure. In other embodiments, it can also be a waterproof material and / or a waterproof structure, or a material with a density so low that the finished board does not sink in water. The foam (or porous light material) of the sound-absorbing material and / or the sound-absorbing structure fills the cavity 5, which plays a quiet role and improves walking comfort; the foam (or porous light material) of the waterproof material and / or the waterproof structure fills the cavity 5, which plays a waterproof role and prolongs the life of the product; after the low-density foam and / or the porous light material fills the cavity 5, the finished board does not sink in water, and when it is installed near water with fast currents, it is easy to salvage and not easy to lose.

[0096] Please refer to Figure 6 and Figure 7 In the process of welding the surface layer 10, a built-in block or a 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 the material from running or leaking during the surface layer compounding process, and to play a shaping role. The foamed material can be used as a bottom mold 9 to prevent the surface layer material from leaking through the hole 7 when compounding the surface layer on the board substrate.

[0097] Furthermore, the surface of the sheet substrate can be roughened to form a number of scratches, or burned to form a number of pits, which increases the friction with the surface layer and makes the surface layer less likely to shrink and deform after forming; the rounded corners of the bent surface of the sheet substrate are burned or serrated to increase the friction with the edge of the surface layer, resist the shrinkage of the composite surface layer (caused by different thermal expansion coefficients), and prevent the surface of the sheet substrate from being exposed after the surface layer shrinks; the concave part of the sheet substrate used to clamp the surface layer is provided with a burred attachment, and the burrs have various directions and shapes, which increases the friction with the surface layer.

[0098] In addition, this embodiment also relates to a forming process of the above-mentioned sheet material substrate, and the steps are as follows:

[0099] In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form a steel strip side plate, and the unbent portion of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the steel strip bottom plate;

[0100] The second step is to weld or glue the end of the steel belt reinforcement plate to the upper surface of the steel belt bottom plate, and weld or glue both sides of the steel belt cover plate in the width direction to the steel belt top plates on both sides;

[0101] Optionally, the method further comprises a third step of filling the cavity with a foam and / or a porous light material, wherein the material of the foam or the porous light material has one or more properties of sound absorption, waterproof property, and property that makes the sheet substrate non-sinking, and the structure of the foam or the porous light material has one or more properties of sound absorption, waterproof property, and property that makes the sheet substrate non-sinking;

[0102] Optionally, a fourth step is included, in which a bottom mold is formed below the holes on the steel belt using a foamed material or a porous lightweight material to prevent a large amount of material from leaking into the cavity through the holes during the composite process of the surface layer material.

[0103] Before the steel strip is bent, it can also be subjected to a steel strip pretreatment process: specifically, in the first step of the above-mentioned sheet substrate forming process, one side of the steel strip serving as the outer surface of the sheet substrate is subjected to one or more of the following treatments: cutting holes, roughening, embossing, burning pits, and burning serrations.

[0104] After the sheet substrate is formed, the sheet substrate may be processed: patterns may be burned or carved at the curved corners of the sheet substrate, and burrs may be built into the concave portions of the surface of the sheet substrate covering the surface layer.

[0105] Example 3

[0106] Please refer to Figure 8 This embodiment provides a plate substrate based on Embodiment 1, which is different from Embodiment 1 in that: the steel belt reinforcement plate 4 is bent into a double-layer plate structure; the side end of the steel belt cover plate 6 can be overlapped and fixed with the steel belt top plate 3, or with the steel belt reinforcement plate 4, or even overlapped and fixed with the steel belt top plate 3 and the steel belt reinforcement plate 4 at the same time.

[0107] The steel belt reinforcement plate 4 extends downward for a certain distance and then bends upward to form a double-layer plate. The bending part is fixedly connected to the upper surface of the steel belt bottom plate 1 by welding or bonding. The end of the steel belt reinforcement plate 4 faces upward and is welded and fixed to the lower surface of the steel belt cover plate 6.

[0108] Please refer to Fig. 9 When no sunken step is provided on the steel strip top plate 3 for accommodating 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.

[0109] Preferably, the double-layer plate is perpendicular to the steel belt bottom plate 1. In other embodiments, the double-layer plate may not be perpendicular to the steel belt bottom plate 1. It is only necessary to satisfy that the double-layer plate, the steel belt bottom plate 1, the steel belt side plate 2, and the steel belt top plate 3 form a cavity 5. The steel belt reinforcement plate 4 is folded into a double-layer plate, which can improve its own bending resistance, thereby improving the compressive resistance of the plate substrate. For further information, please refer to Fig.10 A first bending portion 44 is provided at the top end of the steel strip reinforcing plate 4, and a second bending portion 63 is provided at the side end of the steel strip cover plate 6. The first bending portion 44 and the second bending portion 63 form a second slot 11; the interior of the second slot 11 is wider than the mouth. When the surface layer is compounded on the steel strip cover plate 6, the surface layer material is filled into the second slot 11 and solidified, so that the surface layer and the steel strip cover plate 6 can be firmly combined.

[0110] In addition, this embodiment also relates to a forming process of the above-mentioned sheet material substrate, and the steps are as follows:

[0111] In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form the steel strip side plates, and the unbent part of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, and the steel strip reinforcement plate is bent into a structure in which double-layer plates are attached to each other until the bending part of the double-layer plate contacts the upper surface of the steel strip bottom plate;

[0112] The second step is to weld or glue the double-layer plate bending part of the steel belt reinforcement plate to the upper surface of the steel belt bottom plate, and at the same time weld or glue both sides of the steel belt cover plate in the width direction to the steel belt top plates or steel belt reinforcement plates on both sides;

[0113] Optionally, the method further comprises a third step of filling the cavity with a foam and / or a porous light material, wherein the material of the foam or the porous light material has one or more properties of sound absorption, waterproof property, and property that makes the sheet substrate non-sinking, and the structure of the foam or the porous light material has one or more properties of sound absorption, waterproof property, and property that makes the sheet substrate non-sinking;

[0114] Optionally, a fourth step is included, in which a bottom mold is formed below the holes on the steel belt using a foamed material or a porous lightweight material to prevent a large amount of material from leaking into the cavity through the holes during the composite process of the surface layer material.

[0115] Before the steel strip is bent, it can also be subjected to a steel strip pretreatment process: specifically, in the first step of the above-mentioned sheet substrate forming process, one side of the steel strip serving as the outer surface of the sheet substrate is subjected to one or more of the following treatments: cutting holes, roughening, embossing, burning pits, and burning serrations.

[0116] After the sheet substrate is formed, the sheet substrate may be processed: patterns may be burned or carved at the curved corners of the sheet substrate, and burrs may be built into the concave portions of the surface of the sheet substrate covering the surface layer.

[0117] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A sheet substrate, characterized in that: It includes a steel belt bottom plate and a steel belt cover plate, wherein the two side ends in the width direction of the steel belt bottom plate are extended with upward bent steel belt side plates, the top end of the steel belt side plate is extended with a steel belt top plate bent toward the center line direction of the steel belt bottom plate, the two side ends in the width direction of the steel belt cover plate are overlapped and fixed with the side ends of the steel belt top plate, the upper surfaces of the steel belt cover plate and the steel belt top plate are both used for covering the surface layer, the side ends of the steel belt top plate are extended with downward bent steel belt reinforcement plates, the steel belt reinforcement plates are fixedly connected to the upper surface of the steel belt bottom plate, and the steel belt side plates, the steel belt top plate, the steel belt reinforcement plates and the upper surface of the steel belt bottom plate form a cavity.

2. The sheet material according to claim 1, characterized in that: The steel belt cover plate is provided with a first concave slot, the interior of the first slot is wider than the mouth, and the first slot is used for filling the surface layer.

3. The sheet material according to claim 2, characterized in that: A downwardly protruding portion is provided on the lower surface of the steel belt cover plate corresponding to the first slot, and the inner wall of the protruding portion surrounds the first slot; and a first step for supporting the protruding portion is provided on the steel belt reinforcement plate.

4. The sheet material according to claim 3, characterized in that: The protrusion is in the shape of a circular tube with a notch on the top, and the first step is in contact with the outer wall of the protrusion.

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

6. The sheet material according to claim 3, characterized in that: The steel belt reinforcement plate includes a rib plate perpendicular to the steel belt bottom plate, and the first step is located on the top of the rib plate.

7. The sheet substrate according to claim 3, characterized in that: A bending portion is provided at the bottom of the steel belt reinforcement plate, and the lower surface of the bending portion is flatly attached and fixed to the upper surface of the steel belt bottom plate.

8. The sheet substrate according to claim 7, characterized in that: The side end surface of the bent portion is welded and fixed to the upper surface of the steel belt bottom plate.

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

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

11. The sheet substrate according to claim 1, characterized in that: The steel belt reinforcement plate is a double-layer plate that is bent and bonded together, and the bending portion is fixedly connected to the upper surface of the steel belt bottom plate.

12. The sheet substrate according to claim 11, characterized in that: The side end of the steel belt cover plate is fixedly connected to the upward end of the steel belt reinforcement plate.

13. The sheet substrate according to claim 12, characterized in that: A first bending portion is provided at the top end of the steel belt reinforcement plate, and second bending portions are provided at the two edges in the width direction of the steel belt cover plate. The first bending portion and the second bending portion form a second slot, the interior of the second slot is wider than the mouth, and the second slot is used to fill the surface layer.

14. The sheet substrate according to claim 1, characterized in that: The steel strip side plate includes a vertical portion, a first groove and a second groove. The vertical portion is used to slide and limit with the inner side wall of the mold slide when producing a plate substrate. The first groove is located between the top end of the vertical portion and the steel strip top plate for filling the surface layer. The second groove is located between the bottom end of the vertical portion and the steel strip bottom plate for connecting adjacent plate substrates.

15. The sheet substrate according to any one of claims 1 to 14, characterized in that: The plate substrate is symmetrical about a midline in the length direction of the steel strip bottom plate.

16. The sheet substrate according to claim 15, characterized in that: Holes are arranged on the surface of the sheet material base, and the surface layer and the sheet material base are riveted together through the holes.

17. The sheet substrate according to claim 16, characterized in that: A steel strip formed by punching the hole is left in the hole, a portion of the edge of the steel strip is connected to the plate substrate as a whole, and the steel strip is recessed in the hole.

18. The sheet substrate according to claim 17, characterized in that: The steel strip piece is recessed into the hole in an inclined plate shape, and the higher end of the steel strip piece is connected to the plate base material as a whole.

19. The sheet substrate according to claim 17, characterized in that: The steel strip is in the shape of an arc plate and is recessed into the hole. The two opposite ends of the steel strip are connected to the plate substrate as a whole.

20. The sheet substrate according to claim 15, characterized in that: The cavity is filled with foam and / or porous lightweight material.

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

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

23. The sheet substrate according to claim 20, characterized in that: The foamed material and the porous lightweight material are used to prevent the finished board from sinking in water.

24. The sheet substrate according to claim 20, characterized in that: The foamed material is used as a bottom mold to prevent the surface layer material from leaking through the holes when the surface layer is composited on the board substrate.

25. The sheet substrate according to claim 15, characterized in that: The plate substrate is used to provide a plurality of scratches and / or pits on the surface of the covering surface layer, so as to increase the friction between the surface of the plate substrate and the surface layer.

26. The sheet substrate according to claim 15, characterized in that: The bending part of the covering surface layer of the plate substrate is provided with engravings.

27. The sheet substrate according to claim 15, characterized in that: An additional object with burrs is arranged at the inner concave part of the sheet material used for filling the surface layer. The burrs on the additional object have various directions and shapes.

28. A forming process for a sheet substrate according to any one of claims 1 to 27, characterized in that: Here are the steps: In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form a steel strip side plate, and the unbent portion of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the steel strip bottom plate; In the second step, the end of the steel belt reinforcement plate is welded or glued to the upper surface of the steel belt bottom plate, and the two sides of the steel belt cover plate in the width direction are welded or glued to the steel belt top plates on both sides.

29. A forming process for a sheet substrate according to any one of claims 1 to 27, characterized in that: Here are the steps: In the first step, the first steel strip and the second steel strip of different widths are simultaneously fed into the cold bending forming equipment in the form of two parallel layers, wherein the narrower second steel strip is used as the material plate of the steel strip cover plate, and the two sides of the wider first steel strip in the width direction are continuously rolled and slowly deformed to be bent toward the same side of the steel strip to form the steel strip side plates, and the unbent part of the first steel strip is used as the steel strip bottom plate, and the steel strip side plates on both sides are bent toward each other to form a steel strip top plate parallel to the steel strip bottom plate, and the steel strip top plate is bent toward the upper surface of the steel strip bottom plate to form a steel strip reinforcement plate, and the steel strip reinforcement plate is bent into a structure in which double-layer plates are attached to each other until the bending part of the double-layer plate contacts the upper surface of the steel strip bottom plate; The second step is to weld or glue the double-layer plate bending part of the steel belt reinforcement plate to the upper surface of the steel belt bottom plate, and at the same time weld or glue both sides of the steel belt cover plate in the width direction to the steel belt top plates or the steel belt reinforcement plates on both sides.

30. The forming process of the sheet substrate according to claim 28 or 29, characterized in that: In the first step, before entering the cold-bending forming equipment, one side of the outer surface of the first steel strip and / or the second steel strip as the plate substrate is subjected to one or more treatments including cutting holes, roughening, embossing, burning pits, and burning serrations.

31. The forming process of the sheet material substrate according to claim 30, characterized in that: Also includes: The third step is to fill the cavity with foam and / or porous light material, wherein the material of the foam or porous light material has one or more properties of sound absorption, waterproof property and property of making the sheet substrate non-sinking, and the structure of the foam or porous light material has one or more properties of sound absorption, waterproof property and property of making the sheet substrate non-sinking; The fourth step is to form a bottom mold below the holes on the steel belt using foam or porous lightweight material to prevent a large amount of material from leaking into the cavity through the holes during the composite process of the surface layer material.

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