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 strip bottom plate, steel strip side plates bent upwards are arranged at the two side ends of the steel strip bottom plate in an extending mode, and a steel strip top plate bent towards the center of the steel strip bottom plate is arranged at the top ends of the steel strip side plates in an extending mode; the steel belt top plates are parallel to the steel belt bottom plate, the upper surfaces of the steel belt top plates are used for covering a surface layer, the side end of at least one steel belt top plate extends to be provided with a steel belt reinforcing plate bent towards the steel belt bottom plate, the steel belt reinforcing plates are fixedly connected with the upper surface of the steel belt bottom plate, and the opposite side ends of the two steel belt top plates are fixedly connected. 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 and low material cost and manufacturing cost; and the method is 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, both side ends of the steel strip bottom plate in the width direction of which are extended with steel strip side plates bent upward, the top end of the steel strip side plates is extended with a steel strip top plate bent toward the center direction of the steel strip bottom plate, the steel strip top plate is parallel to the steel strip bottom plate, the upper surface of the steel strip top plate is used to cover a surface layer, at least one side end of the steel strip top plate is extended with a steel strip reinforcement plate bent toward the steel strip bottom plate, the steel strip reinforcement plate is fixedly connected to the upper surface of the steel strip bottom plate, the facing side ends of the two steel strip top plates are fixedly connected, and the steel strip side plates, the steel strip top plate, the steel strip reinforcement plate and the upper surface of the steel strip bottom plate form a cavity.

[0007] Optionally, a first concave groove is provided on the steel belt top plate to which the steel belt reinforcement plate is not extended, the interior of the first groove is wider than the mouth, and the first groove is used to fill the surface layer.

[0008] Optionally, a downwardly protruding portion is provided on the lower surface of the steel belt top 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 on 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 belt top plate includes a first steel belt top plate and a second steel belt top plate, the side end of the first steel belt top plate is extended with a steel belt reinforcement plate bent toward the steel belt bottom plate, the first steel belt top plate is provided with a sunken second step near the steel belt reinforcement plate, the lower surface of the second steel belt top plate is flatly fixed to the upper surface of the second step, and the upper surface of the first steel belt top plate is flush with the upper surface of the second steel belt top plate.

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

[0016] 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.

[0017] Optionally, the steel belt bottom plate and the steel belt side plates on both sides thereof are symmetrically arranged with respect to a plane bisecting the straight plate portion of the steel belt reinforcement plate.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Optionally, the cavity is filled with foam and / or porous lightweight material.

[0023] Optionally, the foam or the porous lightweight material is a sound absorbing material and / or a sound absorbing structure.

[0024] Optionally, the foamed material or the porous lightweight material is a waterproof material and / or a waterproof structure.

[0025] Optionally, the foamed material and the porous lightweight material are used to make the finished board material non-sinking in water.

[0026] 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.

[0027] Optionally, a plurality of scratches and / or pits are arranged on the surface of the sheet material used for covering the surface layer.

[0028] Optionally, the bending part of the covering surface layer of the plate substrate is provided with engravings.

[0029] 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.

[0030] The second object of the present invention is to provide a sheet material forming process, the steps of which are as follows:

[0031] In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, and the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the unbent portion of the steel strip;

[0032] In the second step, the end of the steel belt reinforcement plate is welded or bonded to the upper surface of the unbent portion of the steel belt, and the end of the second steel belt top plate is welded or bonded to the first steel belt top plate.

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

[0034] In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, respectively, the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a first steel strip reinforcement plate, and the second steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a second steel strip reinforcement plate, until the first steel strip reinforcement plate and the second steel strip reinforcement plate are attached to each other and the ends both contact the upper surface of the unbent portion of the steel strip;

[0035] In the second step, the ends of the first steel strip reinforcement plate and the second steel strip reinforcement plate are welded or bonded to the upper surface of the unbent portion of the steel strip, and the facing side ends of the first steel strip top plate and the second steel strip top plate are welded or bonded to each other. Optionally, in the first step of the above-mentioned sheet substrate forming process, one side of the steel strip 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 before entering the cold-bending forming equipment.

[0036] Optionally, the forming process of the plate substrate further includes:

[0037] 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;

[0038] 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.

[0039] In summary, the technical solution of the present invention has the following advantages compared with the prior art:

[0040] 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.

[0041] 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.

[0042] 3. The sinking design where the top plate of the first steel belt overlaps the top plate of the second steel belt facilitates the search for welding points (the high and low positions are clearly felt during manual welding, and are convenient for visual identification and precision control judgment during automatic welding).

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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

[0055] 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.

[0056] Figure 1 It is a schematic diagram of the cross-sectional structure of the plate substrate along the width direction in Example 1.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0061] Figure 6 Schematic diagram showing holes, steel strips and bottom mold on the plate substrate in the embodiment.

[0062] Figure 7 It is a schematic diagram of the cross-sectional structure of the plate substrate along the width direction in Example 3.

[0063] 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, first steel strip top plate 31, second step 311, inclined surface 312, solder filling groove 313, second steel strip top plate 32, first card groove 321, protrusion 322, steel strip reinforcement plate 4, first step 41, rib plate 42, bending portion 43, cavity 5, hole 6, steel strip sheet 7, bottom mold 8, surface layer 9. DETAILED DESCRIPTION

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] Example 1

[0070] Please refer to Figure 1 An embodiment of the present invention provides a plate substrate, comprising a steel strip bottom plate 1, a steel strip side plate 2 and a steel strip top plate 3 which are connected as one body, wherein 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 then bending upward, and the top end of the steel strip side plate 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 for covering the surface layer.

[0071] Among the steel strip top plates 3 on both sides, the steel strip top plate 3 with the steel strip reinforcing plate 4 extending therefrom is the first steel strip top plate 31, and the steel strip top plate 3 without the steel strip reinforcing plate 4 extending therefrom is the second steel strip top plate 32. In this embodiment, only one side end of the steel strip top plate 3 is extended with the steel strip reinforcing plate 4 bent downward, and the side end of the second steel strip top plate 32 is directly overlapped and fixed with the side end of the first steel strip top plate 31.

[0072] The bottom end of the steel belt reinforcement plate 4 is in contact with and fixedly connected to the upper surface of the steel belt bottom plate 1 by welding or bonding. The steel belt side plate 2, the steel belt top plate 3 and the steel belt reinforcement plate 4 together form a cavity 5 with the upper surface of the steel belt bottom plate 1.

[0073] In addition, this embodiment also relates to a forming process of the above-mentioned sheet material substrate, and the steps are as follows:

[0074] In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, and the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the unbent portion of the steel strip;

[0075] In the second step, the end of the steel belt reinforcement plate is welded or bonded to the upper surface of the unbent portion of the steel belt, and the end of the second steel belt top plate is welded or bonded to the first steel belt top plate.

[0076] 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 adaptable to assembly line production.

[0077] Example 2

[0078] Please refer to Figure 2 This embodiment provides a sheet material substrate based on the embodiment 1, and a first recessed groove 321 is bent and formed on the second steel strip top plate 32. The interior of the first groove 321 is wider than the mouth. When the surface layer is compounded on the steel strip top plate 3, the surface layer material is filled into the first groove 321 and solidified, so that the surface layer and the steel strip top plate 3 can be firmly combined.

[0079] A downwardly convex protrusion 322 is formed on the steel strip top plate 3 together with the first slot 321, and the protrusion 322 corresponds to the position of the first slot 321. When the concave first slot 321 is bent on the second steel strip top plate 32, a protrusion 322 will be formed on the lower surface of the second steel strip top plate 32, and the inner wall of the protrusion 322 surrounds the first slot 321.

[0080] 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 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 322. 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; the first clamping groove 321 may also be provided with a groove with the same structure as the first clamping groove 321, which is used to clamp the surface layer, but there is no support under the groove.

[0081] The shape of the protrusion 322 can 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 322; please refer to Figure 3 The shape of the protrusion 322 can also be a trapezoidal tube with a notch on the top, and the first step 41 supports the bottom surface of the protrusion 322; please refer to Figure 4 In addition to being fitted with the bottom surface of the trapezoidal tubular protrusion 322, the first step 41 can also be fitted with the side surface of the protrusion 322. The protrusion 322 can also be in other shapes as long as it can be stuck to the surface layer, and this embodiment does not make any specific restrictions.

[0082] 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.

[0083] Furthermore, the first steel strip top plate 31 is provided with a sunken second step 311 near the steel strip reinforcing plate 4, and the second steel strip top plate 32 is welded or bonded and fixed in the second step 311; the lower surface of the second steel strip top plate 32 is flatly fixed to the upper surface of the second step 311, and the upper surface of the second steel strip top plate 32 is flush with the upper surface of the first steel strip top plate 31, so that the surface layer is simultaneously composited on the first steel strip top plate 31 and the second steel strip top plate 32. The side end of the second steel strip top plate 32 is preferably fixed to the first steel strip top plate 31 by welding, and there is a transitional inclined surface 312 between the upper surface of the second step 311 and the upper surface of the first steel strip top plate 31, and the side end surface of the second steel strip top plate 32 and the inclined surface 312 form a solder filling groove 313. The design of the first steel strip top plate 31 sinking to form a second step 311 for overlapping the second steel strip top plate 32 facilitates the search for welding points: the high and low positions are clearly felt during manual welding; and 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 precision, and vice versa.

[0084] Furthermore, 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 wall of the mold chute when producing the plate substrate. When the vertical portion 23 is in contact with the inner wall of the mold chute, the composite surface layer material will at most stay at the top of the vertical portion 23 and 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 second groove 23 is used to fill the surface layer. A 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 plate substrates, thereby achieving splicing of multiple plate 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 plate substrate, and the other side of the connecting piece is matched with the second groove 22 of another plate substrate, thereby achieving splicing of adjacent plate substrates.

[0085] Furthermore, the above-mentioned steel belt bottom plate 1 and the steel belt side plates 2 on both sides thereof are symmetrically arranged with respect to the bisecting plane of the straight plate portion (i.e., the rib plate 42) of the steel belt reinforcement plate 4; preferably, the welding position of the bending portion 43 and the steel belt bottom plate 1 is located on the right side of the steel belt reinforcement plate 4, because the welding position of the second steel belt top plate 32 and the first steel belt top plate 31 is located on the left side of the reinforcement plate 4, and the two welding positions are basically centrally symmetrical with respect to the center of the plate substrate, so after the two positions are welded, the thermal deformation is basically offset.

[0086] Preferably, the material of the plate substrate is stainless steel, such as 201 stainless steel or 304 stainless steel, which has good weather resistance.

[0087] For further information, please refer to Figure 5 The sheet substrate has a plurality of holes 6 on its surface for composite surface layer 9, and the surface layer and the sheet substrate are riveted through the holes 6; the surface layer is a polymer material, which will flow into the holes 6 after being heated and melted and composited on the surface of the sheet substrate, and form rivets after agglomerating in the holes 6. The holes 6 are formed by punching and cutting, and can be designed not to completely cut through the sheet substrate, but to leave a steel strip 7 formed by punching the holes 6 in the holes 6, and the edge of the steel strip 7 is partially connected to the sheet substrate, and the steel strip 7 is recessed in the holes 6; the steel strip 7 can hold the molten surface layer material flowing into the holes 6, 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 7 and overflows from both sides of the steel strip 7 to form two rivets, so that the riveting effect is better.

[0088] Please refer to Figure 2 The steel strip 7 can be in various forms, and two examples are given below: in the first form, the steel strip 7 is in the shape of an inclined plate recessed in the hole 6, and the higher end of the steel strip 7 is connected to the plate substrate as a whole; in the second form, the steel strip 7 is in the shape of an arc-shaped plate recessed in the hole 6, and the opposite ends of the steel strip 7 are connected to the plate substrate as a whole.

[0089] For further information, please refer to Figure 1 The cavity 5 below the steel strip top plate 3 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) with a sound-absorbing material and / or a sound-absorbing structure fills the cavity 5 to play a quiet role and improve walking comfort; the foam (or porous light material) with a waterproof material and / or a waterproof structure fills the cavity 5 to play a waterproof role and extend the life of the product; after the low-density foam and / or 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.

[0090] Please refer to Figure 2 and Figure 1 In the process of welding the surface layer 9, 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 6 as a bottom mold 8 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 8 to prevent the surface layer material from leaking through the hole 6 when compounding the surface layer on the board substrate.

[0091] 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.

[0092] In addition, this embodiment also relates to a forming process of the above-mentioned sheet material substrate, and the steps are as follows:

[0093] In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, and the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the unbent portion of the steel strip;

[0094] In the second step, the end of the steel belt reinforcement plate is welded or bonded to the upper surface of the unbent portion of the steel belt, and the end of the second steel belt top plate is welded or bonded to the first steel belt top plate.

[0095] Optionally, the method further includes 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 of the following properties: sound absorption, waterproof, and a property that makes the board substrate non-sinking; and the structure of the foam or the porous light material has one or more of the following properties: sound absorption, waterproof, and a property that makes the board substrate non-sinking;

[0096] 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.

[0097] 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.

[0098] 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.

[0099] Example 3

[0100] Please refer to Figure 6 This embodiment provides a plate substrate based on the embodiment 1, but is different from the embodiment 1 in that: the two steel strip top plates 3 on both sides of this embodiment are both extended with downwardly bent steel strip reinforcing plates 4 at the opposite sides, the two steel strip reinforcing plates 4 are attached to each other without leaving a gap, and the two steel strip top plates 3 are welded or bonded to each other. Furthermore, the two attached steel strip reinforcing plates 4 can also be welded or bonded to each other, thereby improving the overall structural strength.

[0101] Furthermore, the bending portions 43 at the bottom of the two steel strip reinforcement plates 4 are bent toward the left and right sides respectively, and the bisecting plane of the two steel strip reinforcement plates 4 is the symmetry plane of the plate substrate. Since the two welding positions are almost symmetrical about the symmetry plane, the thermal deformation is offset after welding.

[0102] This embodiment also relates to a forming process of a sheet material substrate different from that of Embodiment 1 or Embodiment 2, and the steps are as follows:

[0103] In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, respectively, the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a first steel strip reinforcement plate, and the second steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a second steel strip reinforcement plate, until the first steel strip reinforcement plate and the second steel strip reinforcement plate are attached to each other and the ends both contact the upper surface of the unbent portion of the steel strip;

[0104] In the second step, the ends of the first steel belt reinforcement plate and the second steel belt reinforcement plate are welded or glued to the upper surface of the unbent part of the steel belt, and the facing side ends of the first steel belt top plate and the second steel belt top plate are welded or glued to each other.

[0105] Optionally, the method further includes 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 of the following properties: sound absorption, waterproof, and a property that makes the board substrate non-sinking; and the structure of the foam or the porous light material has one or more of the following properties: sound absorption, waterproof, and a property that makes the board substrate non-sinking;

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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, both side ends in the width direction of the steel belt bottom plate are extended with steel belt side plates bent upwards, the top end of the steel belt side plate is extended with a steel belt top plate bent toward the center direction of the steel belt bottom plate, the steel belt top plate is parallel to the steel belt bottom plate, the upper surface of the steel belt top plate is used to cover the surface layer, at least one side end of the steel belt top plate is extended with a steel belt reinforcement plate bent toward the steel belt bottom plate, the steel belt reinforcement plate is fixedly connected to the upper surface of the steel belt bottom plate, the facing side ends of the two steel belt top plates are fixedly connected, and the steel belt side plates, the steel belt top plate, the steel belt reinforcement plate and the upper surface of the steel belt bottom plate form a cavity.

2. The sheet material according to claim 1, characterized in that: A first concave groove is provided on the steel belt top plate to which the steel belt reinforcement plate is not extended. The interior of the first groove is wider than the mouth. The first groove is used to fill 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 top plate corresponding to the first clamping groove, and the inner wall of the protruding portion surrounds the first clamping groove; 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 material 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 includes a first steel strip top plate and a second steel strip top plate, the side end of the first steel strip top plate is extended with a steel strip reinforcement plate bent toward the steel strip bottom plate, the first steel strip top plate is provided with a sunken second step near the steel strip reinforcement plate, the lower surface of the second steel strip top plate is flatly fixed to the upper surface of the second step, and the upper surface of the first steel strip top plate is flush with the upper surface of the second steel strip top plate.

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

11. 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.

12. The sheet substrate according to any one of claims 1 to 11, characterized in that: The steel belt bottom plate and the steel belt side plates on both sides thereof are symmetrically arranged with respect to the bisecting plane of the straight plate portion of the steel belt reinforcement plate.

13. The sheet substrate according to claim 12, 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.

14. The sheet substrate according to claim 13, 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.

15. The sheet substrate according to claim 14, 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.

16. The sheet substrate according to claim 14, 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.

17. The sheet substrate according to claim 12, characterized in that: The cavity is filled with foam and / or porous lightweight material.

18. The sheet substrate according to claim 17, characterized in that: The foamed material or the porous lightweight material is a sound absorbing material and / or a sound absorbing structure.

19. The sheet substrate according to claim 17, characterized in that: The foamed material or the porous lightweight material is a waterproof material and / or a waterproof structure.

20. The sheet substrate according to claim 17, characterized in that: The foamed material and the porous lightweight material are used to prevent the finished board from sinking in water.

21. The sheet substrate according to claim 17, 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.

22. The sheet substrate according to claim 12, 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.

23. The sheet substrate according to claim 12, characterized in that: The bending part of the covering surface layer of the plate substrate is provided with engravings.

24. The sheet substrate according to claim 12, 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.

25. A forming process for a sheet substrate according to any one of claims 1 to 24, characterized in that: Here are the steps: In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, and the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a steel strip reinforcement plate, until the end of the steel strip reinforcement plate contacts the upper surface of the unbent portion of the steel strip; In the second step, the end of the steel belt reinforcement plate is welded or bonded to the upper surface of the unbent portion of the steel belt, and the end of the second steel belt top plate is welded or bonded to the first steel belt top plate.

26. A forming process for a sheet substrate according to any one of claims 1 to 24, characterized in that: Here are the steps: In the first step, a steel strip of a specified width is fed into a cold-bending forming device, so that both sides of the steel strip in the width direction are continuously rolled and slowly deformed to bend toward the same side of the steel strip to form a steel strip side plate, and the steel strip side plates on both sides are bent toward each other to form a first steel strip top plate and a second steel strip top plate parallel to the unbent portion of the steel strip, respectively, the first steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a first steel strip reinforcement plate, and the second steel strip top plate is bent toward the upper surface of the unbent portion of the steel strip to form a second steel strip reinforcement plate, until the first steel strip reinforcement plate and the second steel strip reinforcement plate are attached to each other and the ends both contact the upper surface of the unbent portion of the steel strip; In the second step, the ends of the first steel belt reinforcement plate and the second steel belt reinforcement plate are welded or glued to the upper surface of the unbent part of the steel belt, and the facing side ends of the first steel belt top plate and the second steel belt top plate are welded or glued to each other.

27. The forming process of the sheet substrate according to claim 25 or 26, characterized in that: In the first step, before entering the cold-bending forming equipment, one side of the outer surface of the 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.

28. The forming process of the sheet substrate according to claim 27, 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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