Folding plate, folding method and application

Abstract

The invention discloses a folding plate, a folding method and application, and belongs to the technical field of folding plates. According to the technical scheme, the folding plate comprises a plate body, the plate body is provided with a front face and a back face, a plurality of folding guide parts extending vertically are arranged on the front face and the back face of the plate body in a staggered mode, and the folding guide parts are used for guiding the plate body to be folded into a folding body in a Z shape; a guide folding part is transversely arranged on the plate main body, and a stress relieving assembly is arranged in the area where the guide folding part is connected with the folding guide part so that the folding body can be folded along the guide folding part; accurate Z-shaped folding is achieved through the folding guide structures which are arranged in a staggered mode, stress concentration and stacking interference during thick plate folding are effectively eliminated in combination with the guide folding parts and the flexible stress eliminating areas which are distributed in a staggered mode, and the stability of a folding body is improved in cooperation with a buckling type fixing structure; the method has the advantages that the folding precision is improved, stress concentration is eliminated, stacking interference is avoided, and the fixing reliability is enhanced.

Description

Technical Field

[0001] This invention belongs to the field of folding sheet technology, specifically relating to a folding sheet, a folding method, and its application. Background Technology

[0002] During daily car use, the windshield is susceptible to various environmental factors, causing numerous problems for car owners. For example, in hot summer weather, prolonged direct sunlight on the windshield can cause a rapid increase in interior temperature, affecting not only driving comfort but also potentially accelerating the aging of the interior materials. In cold winter conditions, frost easily condenses on the windshield, requiring drivers to spend time de-icing and impacting travel efficiency. Furthermore, fallen leaves, dust, and other debris easily adhere to the windshield, increasing the difficulty of cleaning. To address these issues, various automotive windshield protectors have emerged on the market. Among them, folding protectors have gained popularity due to their ease of storage and portability. However, existing folding windshield protectors are made of thin and lightweight materials. While this facilitates folding and storage, it sacrifices their protective effect. Increasing the thickness of the protector would inevitably compromise its folding and storage advantages, creating a significant structural design contradiction. Therefore, there is an urgent need to overcome this contradiction and design a folding protector that is both easy to fold and provides enhanced protection.

[0003] Furthermore, with the diverse needs of outdoor sports, home storage, children's play areas, and temporary playground mats, folding boards, due to their portability and support, have become a preferred alternative to traditional fixed boards. Existing folding boards mostly use simple indentations or straight folding seams as folding guides. While this design allows for basic folding with manual adjustments when using thin boards, it has significant limitations when dealing with thicker boards. Thick boards are rigid, and simple indentations cannot provide a clear folding trajectory, easily leading to misalignment of adjacent boards and uneven stacking thickness. Simultaneously, the lack of angle-limiting structures makes it difficult to precisely control the 90° fold angle when folding thick boards. Over-folding can damage the material, while under-folding creates gaps, affecting the fit of subsequent folds.

[0004] During the two-step folding process of thick plates—Z-folding and lateral folding—the area where the vertical folding guide and the lateral folding guide meet generates stress far exceeding that of thin plates. Current technology lacks a dedicated stress-relieving structure for this area. When thick plates are folded, the material at the corners must simultaneously withstand the combined forces of vertical bending and lateral folding, easily leading to localized stress concentration. Over long-term use, this area is prone to cracks, wrinkles, and even irreversible fatigue fracture.

[0005] Existing folding panels often employ a single axis or equally spaced folding lines for their lateral guide structures. When folding thick Z-shaped panels, significant layering interference issues arise. The Z-shaped folding body exhibits a gradient thickness distribution, while the existing guide folding sections maintain a fixed distance between the folding lines and the axis. This results in insufficient rotation space for the outer, thicker panels during folding, leading to compression interference with the inner, thinner panels and preventing a tight fit. Some solutions lack a staggered guide design, causing adjacent panels to misalign during thick panel folding, resulting in gaps or warping. Furthermore, the folded body is prone to collapse in the middle due to its own weight.

[0006] The weight of a thick folded plate is significantly greater than that of a thin plate, and existing fixing methods have obvious defects. Strap-type fixing lacks a precise fastening structure; when a thick plate is handled or subjected to vibration, the straps are easily loosened due to their own weight, causing the edges of the folded plate to become fragmented. Velcro fasteners lose their adhesiveness over time and cannot withstand the continuous tensile force of a thick plate; furthermore, the adhesion between the Velcro and the surface of the thick plate is poor, making it difficult to secure the fragmented folded edges. Summary of the Invention

[0007] The present invention provides a folding plate, a folding method, and an application to solve at least one of the above-mentioned technical problems.

[0008] The technical solution adopted in this invention is as follows: A folding board includes a board body having a front and a back. The front and back of the board body are alternately provided with a plurality of vertically extending folding guides, which are used to guide the board body to fold in a Z-shape to form a folded body. A guide folding part is provided laterally on the board body. The area where the guide folding part and the folding guide part are connected is provided with a stress relief component to realize the folded body folding along the guide folding part.

[0009] Furthermore, this application also proposes that a plurality of the folding guide portions and the guide folding portions divide the main body of the plate into a plurality of plates of equal width, wherein the width of the plates is x, and the guide folding portions include a first folding portion and a second folding portion. The first folding portions are spaced apart along the axis of the main body on the back side of the main body, and the distance between adjacent first folding portions is x. The second folding portions are spaced apart along the axis of the main body on the front side of the main body, and the distance between adjacent second folding portions is x. The first folding portions and the second folding portions are staggered so that the front side of one of two adjacent plates is the first folding portion, and the back side of the other plate is the second folding portion.

[0010] Furthermore, this application also proposes that the first folding portion includes two first folding seams symmetrically arranged along the axis of the main body of the plate. The first folding seam is a folding groove structure with a right-angled triangular cross-section, formed by hot pressing. When the plates on both sides of the first folding seam are folded inward at 90° along the first folding seam, the side of the area between the two first folding seams forms a support structure that abuts against the side of the folding groove structure. The second folding portion includes two second folding seams symmetrically arranged along the axis of the main body of the plate. The second folding seam is a folding groove structure with a right-angled triangular cross-section, formed by hot pressing. When the plates on both sides of the second folding seam are folded inward at 90° along the second folding seam, the side of the area between the two second folding seams forms a support structure that abuts against the side of the folding groove structure.

[0011] Furthermore, this application also proposes that the stress relief component includes a flexible folding area that is thermoformed in the region where the guide folding portion meets the first folding seam and the second folding seam.

[0012] Furthermore, this application also proposes that the distance between the first folding seam and the second folding seam, which are arranged sequentially along the horizontal axis of the arrangement direction of several plates, and the axis increases step by step.

[0013] Furthermore, this application also proposes that the flexible folding area is hot-pressed to create a guide groove on the folding guide portion that communicates with the adjacent first folding seam or second folding seam. The guide groove is used to guide the plates on both sides of the first folding seam or second folding seam to rotate at least 90°.

[0014] Furthermore, this application also proposes that the flexible folding area is pressed into the folding guide portion by a hot pressing process to form a flexible compression plane that penetrates the adjacent first folding seam or second folding seam. The flexible compression plane is used to guide the plates on both sides of the first folding seam or second folding seam to rotate at least 90°.

[0015] Furthermore, this application also proposes that the folding guide portion includes a plurality of vertically extending first folding portions spaced apart on the front side of the main body of the plate, and a plurality of vertically extending second folding portions spaced apart on the back side of the main body of the plate, wherein the first folding portions and the second folding portions are staggered, and the first folding portions and the adjacent second folding portions are spaced at the same distance and the distance between them is x.

[0016] Furthermore, this application also proposes that the first folded part includes a first folding seam, the second folded part includes a second folding seam, the first folding seam and the second folding seam are both trapezoidal grooves whose width gradually decreases from the outside to the inside, and a flange with a right-angled triangle cross-section is provided on the axis of the trapezoidal groove. When the plates located on both sides of the trapezoidal groove rotate 90° around the flange, the right-angled surface of the flange forms an abutting support structure with the inner wall of the trapezoidal groove. It also includes a wrapping assembly disposed outside the two outermost plates of the folding body. The wrapping assembly is used to wrap the discrete folding edges of the folding body away from the guide folding part. The wrapping assembly includes a fixing strap, which is disposed at the end of one of the outermost plates of the folding body. The end of the fixing strap is provided with a male buckle, and the other plate is provided with a female buckle that cooperates with the male buckle.

[0017] A method for folding a folding plate, specifically including the following steps: S1. Structural identification: Confirm the front and back sides of the folding plate body as described in any one of claims 1-9, identify the vertical first folding parts spaced apart on the front side, the vertical second folding parts spaced apart on the back side, and the guide folding parts distributed laterally along the axis of the plate body. The area where the guide folding parts connect with the first and second folding parts is provided with stress relief components, and the plate body has been divided into several plates with a width of x by the first and second folding parts and the guide folding parts. S2, Z-shaped fold: Guide the corresponding plate along the first fold seam of the first fold section to fold it toward the back of the main body of the plate until the plate rotates 90° around the right-angled triangular flange on the axis of the trapezoidal groove, and the right-angled surface of the flange abuts against the inner wall of the trapezoidal groove; then guide the next plate along the second fold seam of the adjacent second fold section to fold it toward the front of the main body of the plate, and rotate it 90° until the flange abuts against the trapezoidal groove; fold all the plates in this alternating pattern to form a long strip Z-shaped folded body; S3, Guided Folding: Align the Z-shaped folding body with the guide folding part along the axis of the main body of the plate, guide the corresponding plate to fold inward along the first folding seam of the first folding part on the back, and guide the adjacent plate to fold inward along the second folding seam of the second folding part on the front. During the folding process, the guide groove or flexible compression plane of the stress relief component releases the stress in the connection area. With the help of the design of the first folding seam, the second folding seam and the axis increasing in stages, each layer of plates can rotate at least 90° without interference until the Z-shaped folding body is folded and attached along the guide folding part to form a double-layer folding structure. S4. Wrapping and fixing: Wrap the fixing strap at the end of one of the outermost plates of the folded body around the discrete folding edge of the folded body away from the guide folding part, so that the female buckle at the end of the fixing strap is fastened to the female buckle of the other outer plate, thus completing the fixing of the folded body.

[0018] A folding board can be used in any application scenario, such as car windshield shading and protection, outdoor mats, and children's crawling mats.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are as follows: 1. By employing alternating forward and reverse folding guides to achieve step-by-step angle control, combined with stress-relief components to handle complex stress distributions, the problem of trajectory deviation and breakage during thick plate folding is effectively solved. The lateral arrangement of the guide folding parts avoids stacking interference, ensuring the structural compactness of the folded body after folding. This application achieves precise angle folding and stress dispersion of thick plates, improving the stability and repeatability of the folding process. The combined design of the folding guides and the guide folding parts solves the challenge of trajectory control during thick plate folding, while the stress-relief components effectively prevent material fatigue at folding corners. This solution allows the folded plate to adapt to more complex folding configurations while maintaining its load-bearing capacity.

[0020] 2. This solution utilizes a staggered layout of the folding sections on both sides, ensuring that the folding fulcrums of adjacent plates are located on different planes, preventing interference between the plates' rotational space during folding. Furthermore, the design of equal-width plates and the matching spacing of the folding sections ensure consistent thickness across all layers of the folded body, resolving the uneven layering problem caused by offset folding in existing technologies. This application achieves precise alignment and folding of adjacent plates during thick plate folding, eliminating interlayer interference. The staggered folding sections provide independent rotational space for each layer of the folded body, preventing stress concentration caused by material accumulation. The matching design of the equal-width plates and the spacing of the folding sections further enhances folding regularity, resulting in a tight fit of the folded structure and providing a stable base shape for subsequent folding operations.

[0021] 3. This solution utilizes a right-angled triangular folding groove formed by hot pressing, which not only provides a clear folding trajectory for thick plates but also achieves precise 90° folding angle control through inclined guidance and right-angle limiting. The symmetrically arranged folding seams form a double-support structure, which can increase the load-bearing capacity by at least twice compared to a single-seam structure. This application effectively solves the problem of folding trajectory deviation caused by the high rigidity of the material when folding thick plates. The mechanical limiting structure ensures precise and controllable folding angle, while the symmetrical support design enhances the compressive stability of the folded body. The inclined guiding characteristics of the folding groove significantly reduce the internal stress of the material during thick plate folding, avoiding the fatigue fracture risk caused by traditional right-angle bending.

[0022] 4. This solution utilizes a hot-press forming process to create a directionally weakened flexible folding zone in the stress concentration area. This allows the material to preferentially undergo controllable deformation during folding, dispersing the stress originally concentrated at the cross-section to a larger area. This application effectively solves the problem of material fatigue fracture caused by stress concentration in the cross-section area when folding thick plates. The flexible folding zone absorbs and disperses bidirectional bending stress, reducing the accumulation rate of micro-damage within the material and extending the service life of the folded plate under repeated folding conditions. The characteristics of the hot-press forming process ensure that the flexible folding zone and the folding seam form an integrated structure, avoiding assembly errors or reliability degradation caused by additional parts.

[0023] 5. This solution utilizes a gradient variation in the folding seam position to provide folding space matching the thickness of different layers of panels, avoiding misalignment or material damage caused by rigid contact. This application solves the stacking interference problem when thick plates are folded laterally, allowing panels of different layers to rotate unimpeded and fit tightly together during the folding process, forming a stable double-layer folding structure, while reducing the impact of folding stress on the material.

[0024] 6. This solution, through the combined design of a through-type guide groove and a flexible folding zone, achieves both stress release and provides a precise rotation path, resolving the contradiction between thick plate folding trajectory control and structural durability. This application effectively reduces stress concentration at folding corners, preventing material fatigue fracture. Simultaneously, the trajectory constraint of the guide groove ensures precise control of the plate rotation angle, making the thick plate folding process smoother and more stable.

[0025] 7. This application utilizes a flexible compression plane that runs through the folding seam, allowing stress to be dispersed and absorbed within the extensible plane. This maintains the accuracy of the folding trajectory while preventing material cracking due to stress concentration. This application effectively solves the problem of material fatigue fracture caused by stress concentration at the cross corners during the folding of thick plates. The flexible compression plane absorbs bidirectional folding stress through extension, extending the service life of the folded plate under repeated folding conditions. Simultaneously, the through-flow design of this plane and the folding seam ensures precise control of the plate's rotation angle, preventing folding offset due to stress interference and improving the regularity and stability of thick plate folding.

[0026] 8. This solution uses the cooperation of trapezoidal groove and flange to form rigid support during folding, ensuring 90° folding accuracy; the staggered front and back folding parts avoid direct contact between the front or back of adjacent plates, reducing interference during folding; the buckle design of the wrapping component replaces the traditional straps, improving the fixing reliability of the thick plate folding body.

[0027] 9. This solution achieves mechanical positioning through the cooperation of trapezoidal groove and flange, which improves folding accuracy compared to traditional straight folding seams; it uses snap fasteners instead of Velcro to avoid fixation failure caused by adhesive decay, and is especially suitable for folding bodies with heavy self-weight.

[0028] This application effectively solves the problem of edge dispersion after folding thick plates, ensuring the structural integrity of the folded body during handling or vibration. The abutment support structure of the flange and trapezoidal groove keeps the folding angle stably controlled at 90°, avoiding interlayer gaps caused by insufficient or excessive folding. The combination of fixing straps and snap fasteners can withstand the self-weight of the folded thick plate and prevent loosening and deformation of the folded edges due to stress release. Attached Figure Description

[0029] Figure 1 This is a perspective structural diagram of a specific embodiment of the present invention; Figure 2 This is a front view of a specific embodiment of the present invention; Figure 3 This is a rear view of a specific embodiment of the present invention; Figure 4 This is one of the three-dimensional structural schematic diagrams of a specific embodiment of the present invention; Figure 5 This is a second three-dimensional structural schematic diagram of a specific embodiment of the present invention.

[0030] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0031] In the attached diagram: 1. Main body of the board; 11. Board; 2. First fold joint; 21. Second fold joint; 3. First folding part; 301. First folding joint; 31. Second folding part; 311. Second folding joint; 4. Fixing strap; 41. Female buckle; 42. Female buckle; 5. Compression plane; 6. Guide groove. Detailed Implementation

[0032] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0034] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," "specific example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] In existing technologies, folding panel technology is mainly designed for thin sheet materials, using simple indentations or straight fold seams as guiding structures. As application scenarios increasingly demand thicker sheet materials, thicker materials exhibit problems such as insufficient guidance, stress concentration, and layer interference during folding. Existing folding structures cannot effectively accommodate the high rigidity of thick sheets, leading to folding trajectory deviation, difficulty in controlling folding angles, and a tendency for cracks or breaks at folding corners, affecting service life. Traditional fixing methods also struggle to address the risk of loosening due to the weight of thick sheets, limiting the application of folding panels in load-bearing scenarios.

[0038] To address the aforementioned issues, the inventors observed that the core causes of thick plate folding failure lie in insufficient folding guidance and stress concentration. Analysis of the mechanical distribution during the folding process revealed that existing straight folding seams cannot constrain the folding angle of thick plates, leading to layer misalignment. Further research revealed bidirectional stress superposition at the intersection of the folding seam and the transverse folding line, necessitating the introduction of a local stress release mechanism. Based on this, they proposed incorporating angle limiting and stress relief components into the folding guidance structure to achieve stable folding of thick plates through step-by-step guidance and stress dispersion.

[0039] Therefore, refer to Figures 1-5 This application proposes a plate body 1, which has a front and a back. The front and back of the plate body 1 are alternately provided with a plurality of vertically extending folding guides. The folding guides are used to guide the plate body 1 to fold in a Z-shape to form a folded body. The plate body 1 is provided with a guide folding part arranged laterally. The area where the guide folding part and the folding guide part are connected is provided with a stress relief component to realize the folded body folding along the guide folding part.

[0040] The folding guide is a linear guiding structure set on the surface of the sheet material. It can be achieved by alternating folding seams or indentations on both sides, forming a Z-shaped folding path through an alternating layout. The guide folding section consists of laterally distributed folding lines, specifically using thermoforming folding grooves perpendicular to the folding guide, used for a second fold of the Z-shaped fold. The stress relief component is a flexible area located at the intersection of folding lines, specifically implemented using localized thinning or a composite structure of elastic materials, used to absorb bidirectional stress generated during the folding process.

[0041] Specifically, the main body 1 forms a step-by-step folding path through alternating folding guides on both sides. When performing a Z-shaped fold along the vertical folding guide, the trapezoidal cross-section structure of the folding seam restricts the rotation angle of the plate 11, ensuring that each fold forms a precise 90° angle. After completing the Z-shaped fold, the transverse guide folding part guides the folded body to fold along the axis. At this time, the stress relief component releases the stress concentration at the intersection through material deformation. The synergistic effect of the folding guide and the guide folding part allows the thick plate to achieve the continuous completion of two folding actions while maintaining structural strength.

[0042] Compared to existing technologies, traditional solutions employ a unidirectional folding line and lack a stress relief mechanism, leading to angular deviations and structural damage during the folding of thick plates. This solution utilizes alternating forward and reverse folding guides to achieve step-by-step angle control, combined with stress relief components to handle complex stress distributions, effectively solving the problems of trajectory deviation and breakage during thick plate folding. The lateral arrangement of the guide folding parts avoids stacking interference, ensuring the structural compactness of the folded body after folding.

[0043] Through the above technical solutions, this application achieves precise angle folding and stress dispersion of thick plates, improving the stability and repeated service life of the folding process. The combined design of the folding guide and the guiding folding part solves the problem of controlling the folding trajectory of thick plates, and the stress relief component effectively prevents material fatigue at the folding corners. This solution enables the folding plate to adapt to more complex folding shape requirements while maintaining its load-bearing capacity.

[0044] The folding panel structure proposed in this application is mainly used in various application scenarios, including but not limited to automotive windshield shading and protection, outdoor mats, and children's crawling mats. When applied to automotive windshield shading and protection, the panel body 1 needs to be adapted to the automotive windshield to ensure its compatibility and fit. For example, an insertion seam is provided in the middle of the upper side of the panel body 1 to avoid the mounting bracket of the rearview mirror in the passenger compartment. A V-shaped reserved opening corresponding to the insertion seam is provided in the middle of the panel body 1. In addition, rearview mirror protectors and side window glass protectors can be added symmetrically on both sides of the panel body 1 to achieve all-round protection for the automotive windshield, rearview mirror, and side window glass.

[0045] Reference Figures 1-5 This application further proposes several folding guides and guide folding parts to divide the main body 1 into several plates 11 of the same width, the width of the plates 11 being x. The guide folding part includes a first folding part 3 and a second folding part 31. The first folding parts 3 are spaced apart along the axis of the main body 1 on the back of the main body 1, and the distance between adjacent first folding parts 3 is x. The second folding parts 31 are spaced apart along the axis of the main body 1 on the front of the main body 1, and the distance between adjacent second folding parts 31 is x. The first folding parts 3 and the second folding parts 31 are staggered so that one of the front sides of two adjacent plates 11 is the first folding part 3, and the back side of the other plate 11 is the second folding part 31.

[0046] The folding guide section is a vertically extending structure located on both sides of the main body 1. It forms folding seams through a hot-pressing process to guide the plate 11 to fold in a Z-shape along a predetermined trajectory. The guide folding section is a folding structure laterally distributed along the axis of the main body 1, containing alternating front and back folding sections for achieving the folding operation. The first folding section 3 is a transverse folding structure located on the back of the main body 1, composed of spaced folding seams with adjacent spacing equal to the width of the plate 11, forming a right-angled triangular folding groove through a hot-pressing process. The second folding section 31 is a transverse folding structure located on the front of the main body 1, with folding seam spacing matching the width of the plate 11, and the folding groove shape symmetrical to the first folding section 3. The staggered arrangement means that the first folding section 3 and the second folding section 31 are alternately distributed on the front and back of the main body 1, so that the front and back sides of adjacent plates 11 correspond to different folding sections.

[0047] Specifically, the main body 1 is divided into equal-width plates 11 by the folding guide and the guide folding section, with the width of each plate 11 matching the spacing between the folding sections. The first folding sections 3 are arranged at intervals of x on the back side, and the second folding sections 31 are arranged at the same intervals on the front side, with their positions offset from each other. During folding, adjacent plates 11 use the first folding section 3 on the front side and the second folding section 31 on the back side as folding fulcrums, respectively, and are guided to rotate by the right-angled triangular structure of the folding groove. Due to the staggered distribution of the folding sections on the front and back sides, adjacent plates 11 form a complementary support structure after folding, avoiding layering interference. For example, when the first plate 11 folds inward along the first folding section 3 on the back side, its adjacent second plate 11 folds in the opposite direction along the second folding section 31 on the front side; their folding trajectories do not interfere with each other, ensuring uniform layer thickness of the folded body.

[0048] Compared to existing technologies, traditional folding plates use a single axis or equally spaced folding lines, causing overlapping folding pivots of adjacent plates 11 during thick plate folding, resulting in compression interference. This solution addresses this by staggering the front and back folding sections, ensuring that the folding pivots of adjacent plates 11 are located on different planes, preventing interference between the rotational spaces of the plates 11 during folding. Furthermore, the design of the equal-width plates 11 matches the spacing of the folding sections, ensuring consistent thickness across all layers of the folded body and resolving the uneven layering problem caused by offset folding in existing technologies.

[0049] Through the above technical solution, this application achieves precise alignment and folding of adjacent plates 11 during the folding process of thick plates, eliminating interlayer interference. The staggered folding section provides each layer of the folded body with independent rotation space, avoiding stress concentration caused by material accumulation. The matching design of the spacing between the equal-width plates 11 and the folding section further improves the folding regularity, making the stacked structure after folding fit tightly together, providing a stable basic shape for subsequent folding operations.

[0050] Reference Figures 1-5 This application further proposes that the first folding part 3 includes two first folding seams 301 symmetrically arranged along the axis of the main body 1. The first folding seam 301 is a folding groove structure with a right-angled triangular cross section formed by hot pressing. When the plates 11 located on both sides of the first folding seam 301 are folded inward at 90° along the first folding seam 301, the side of the area between the two first folding seams 301 forms a support structure that abuts and cooperates with the side of the folding groove structure. The second folding part 31 includes two second folding seams 311 symmetrically arranged along the axis of the main body 1. The second folding seam 311 is a folding groove structure with a right-angled triangular cross section formed by hot pressing. When the plates 11 located on both sides of the second folding seam 311 are folded inward at 90° along the second folding seam 311, the side of the area between the two second folding seams 311 forms a support structure that abuts and cooperates with the side of the folding groove structure.

[0051] The hot-pressed folding groove structure is a recessed structure with a specific cross-sectional shape formed on the surface of the main body 1 through a hot-pressing process. Specifically, a groove of a predetermined depth can be formed on the surface of the sheet material by heating and pressing with a mold. The right-angled triangular cross-section design allows the material to bend naturally along the inclined plane during folding, avoiding stress concentration caused by right-angle bending. The abutting support structure means that after the sheet 11 completes a 90° inward fold, the sidewall of the folding groove forms a surface contact with the side of the adjacent sheet 11. This contact surface can withstand loads perpendicular to the folding direction, thereby improving the overall stability of the folded body.

[0052] Specifically, when plate 11 needs to be folded laterally, the operator can apply bending force along the first folding seam 301 or the second folding seam 311. Because the folding groove has a right-angled triangular cross-section, plate 11 will preferentially deform along the inclined surface of the groove during bending until both plates 11 rotate to a 90° position. At this point, the right-angled side of the folding groove forms a mechanical limit with the side of the adjacent plate 11, preventing the plate 11 from being over-folded. The area between the two symmetrically arranged folding seams forms a mutually abutting support surface after folding. This support surface can disperse the pressure borne by the folded body in the vertical direction, preventing structural deformation caused by excessive local stress.

[0053] Compared to existing technologies, traditional folding seams often use rectangular grooves of equal width or simple indentations, which can easily lead to material accumulation and folding angle deviations when folding thick plates. This solution utilizes right-angled triangular folding grooves formed through a thermoforming process, providing a clear folding trajectory for thick plates and achieving precise 90° folding angle control through inclined guidance and right-angle limiting. The symmetrically arranged folding seams create a double-support structure, increasing the load-bearing capacity by at least double compared to a single-seam structure.

[0054] Through the above technical solution, this application effectively solves the problem of folding trajectory deviation caused by the high rigidity of the material when folding thick plates. A mechanical limiting structure ensures precise and controllable folding angles, while a symmetrical support design enhances the compressive stability of the folded body. The inclined guiding characteristics of the folding groove significantly reduce the internal stress of the material during thick plate folding, avoiding the fatigue fracture risk caused by traditional right-angle bending.

[0055] Reference Figures 1-5 This application further proposes a flexible folding area that is hot-pressed in the area where the guide folding part is connected to the first folding seam 301 and the second folding seam 311.

[0056] The flexible folding zone is a locally weakened area formed on the surface of the folding plate material through a hot-pressing process. Specifically, a hot-pressing roller can be used to apply specific temperature and pressure at a predetermined location to create a deformed area with reduced thickness and oriented molecular chains. This area reduces the rigidity of the material, allowing the stress generated during the folding process to be dispersed and released within the flexible folding zone.

[0057] Specifically, when the folding plate undergoes Z-folding and lateral folding, the cross-shaped area where the vertical folding guide and the lateral guide folding part intersect will bear bidirectional bending stress. The flexible folding area forms a weak zone in the material at this point. By altering the molecular arrangement direction in this area through a hot-pressing process, it preferentially undergoes elastic deformation under stress. During folding, the material ductility of the flexible folding area is higher than that of the surrounding area. The compressive stress generated by the plates 11 on both sides of the fold seam during rotation is absorbed by the elastic deformation of the flexible folding area, preventing stress concentration that could lead to material cracking. The thinning design of the flexible folding area allows the plates 11 to undergo local bending during rotation, providing compensation space for the folding paths of adjacent plates 11.

[0058] Compared to existing technologies, traditional folding panels lack any stress-relieving structures in the cross-shaped intersection area. During folding, the bending stress in this area acts directly on the material itself, leading to cracks or breakage after repeated folding. This solution uses a hot-pressing process to create a directionally weakened, flexible folding zone in the stress concentration area. This allows the material to preferentially undergo controllable deformation during folding, dispersing the stress originally concentrated at the cross-shaped intersection area to a larger region.

[0059] Through the above technical solution, this application effectively solves the problem of material fatigue fracture caused by stress concentration in the cross-shaped area during thick plate folding. The flexible folding area absorbs and disperses bidirectional bending stress, reducing the accumulation rate of microscopic damage inside the material and extending the service life of the folded plate under repeated folding conditions. The hot-pressing process ensures that the flexible folding area and the folding seam form an integrated structure, avoiding assembly errors or reliability degradation caused by additional parts.

[0060] Reference Figures 1-5 This application further proposes that the distance between the first folding seam 301 and the second folding seam 311, which are arranged sequentially along the horizontal axis of the arrangement direction of several plates 11, and the axis increases step by step.

[0061] The horizontal axis is a virtual straight line perpendicular to the arrangement direction of the plates 11 and passing through the geometric center of the plate body 1. It can be implemented using laser markings or mold positioning reference lines to define the symmetrical distribution of the folding seams. The first folding seam 301 and the second folding seam 311 are folding groove structures hot-pressed onto the front and back sides of the plate body 1. They can be formed using a continuous hot-pressing process to create grooves with right-angled triangular cross-sections, with the folding trajectory controlled by the groove depth and angle. The progressively increasing distance means that the spacing between adjacent folding seams relative to the axis increases incrementally. This can be achieved using an arithmetic or geometric sequence spacing arrangement.

[0062] Specifically, in the direction where the plates 11 are arranged along the horizontal axis, the first folding seam 301 and the second folding seam 311 are set at positions with different distances from the axis and gradually increasing in size. When the Z-shaped folded body is folded laterally, the outer plate 11, due to its larger layer thickness, requires more rotation space. At this time, the folding seam farther from the axis provides the outer plate 11 with an additional unfolding radius, avoiding compression with the inner plate 11; while the inner plate 11, due to its smaller layer thickness, achieves compact folding through the folding seam closer to the axis. Thus, each layer of plate 11 adaptively adjusts its rotation path according to its own thickness during the folding process, eliminating interlayer interference.

[0063] Compared to existing technologies, the fixed distance between the folding seam and the axis of traditional folding panels causes the outer thick-layer panel 11 to be compressed and deformed due to the limited space of the inner thin-layer panel when rotating. This solution, by varying the position of the folding seam, allows panels 11 with different numbers of layers to obtain folding space matching their thickness, avoiding folding misalignment or material damage caused by rigid contact.

[0064] Through the above technical solution, this application solves the problem of layer interference when thick plate folding body is folded laterally, so that the plates 11 with different numbers of layers can rotate without obstruction and fit tightly together during the folding process, forming a stable double-layer folding structure, while reducing the impact of folding stress on the material.

[0065] Reference Figures 1-5 This application further proposes that the flexible folding area is hot-pressed to press out a guide groove 6 on the folding guide part, which is connected to the adjacent first folding seam 301 or second folding seam 311. The guide groove 6 is used to guide the plates 11 on both sides of the first folding seam 301 or second folding seam 311 to rotate at least 90°.

[0066] The guide groove 6 is a groove-shaped structure connected to the folding seam. Specifically, it can be achieved by hot-pressing a continuous groove onto the surface of the sheet material. Its function is to provide a clear trajectory guide for the rotation of the plate 11. Specifically, when the folded plate is folded laterally, the flexible folding area, through the connection between the guide groove 6 and the folding seam, allows the stress on the plate 11 to be dispersed and released during rotation. When the plate 11 folds inward around the folding seam, the continuous groove structure of the guide groove 6 forces the plate 11 to rotate along a preset path, avoiding offset or jamming caused by material rigidity. For example, when the plate 11 rotates to 90°, the sidewall of the guide groove 6 forms a contact limit with the inclined surface of the folding seam, further constraining the rotation angle.

[0067] Existing folding plates only have simple indentations or equal-width folding seams at the folding corners, which cannot effectively distribute stress and lack rotation guidance, making thick plates prone to cracking or angular deviations when folded. This solution, however, uses a combination of a through-type guide groove 6 and a flexible folding area to achieve stress release and provide a precise rotation path, resolving the contradiction between thick plate folding trajectory control and structural durability.

[0068] Through the above technical solution, this application effectively reduces stress concentration at the folding corner, prevents material fatigue fracture, and ensures that the rotation angle of plate 11 is precisely controllable through the trajectory constraint of guide groove 6, making the thick plate folding process smoother and more stable.

[0069] Reference Figures 1-5 This application further proposes that a flexible compression plane 5 is pressed into the folding guide part by a hot pressing process in the flexible folding area, which is connected to the adjacent first folding seam 301 or second folding seam 311. The flexible compression plane 5 is used to guide the plates 11 on both sides of the first folding seam 301 or second folding seam 311 to rotate at least 90°.

[0070] The flexible compression plane 5 is a planar structure with extensibility formed in the area where the folding guide and the folding seam are connected by a hot pressing process. Specifically, it can be achieved by pressing a plane with micropores or wavy texture on the surface of the main body 1 using a hot pressing mold. This structure can absorb bending stress through the local material extension during the folding process.

[0071] During the Z-shaped folding and lateral folding of the main plate 1, the flexible compression plane 5 located in the area where the folding guide connects to the folding seam releases the composite stress generated by the bidirectional folding through its extensibility. When the plate 11 rotates 90° around the folding seam, the flexible compression plane 5 compensates for the displacement difference between adjacent plates 11 through material extensibility, preventing stress concentration at the cross corner. At the same time, the through design of the flexible compression plane 5 and the folding seam forms a continuous stress release path, so that the shear force generated during the rotation of the plate 11 is evenly distributed along this path, preventing fatigue cracks in local materials due to repeated folding.

[0072] Existing folding plates only have equal-width folding grooves or straight indentations in the folding seam area. When thick plates are folded, the composite stress in this area cannot be effectively released, leading to irreversible damage to the material. This application, however, by setting a flexible compression plane 5 that runs through the folding seam, allows the stress to be dispersed and absorbed within the ductile plane, maintaining the accuracy of the folding trajectory while preventing the material from cracking due to stress concentration.

[0073] Through the above technical solution, this application effectively solves the problem of material fatigue fracture caused by stress concentration at the cross corners during the folding of thick plates. The flexible compression plane 5 absorbs bidirectional folding stress by extending, thus extending the service life of the folded plate under repeated folding conditions. At the same time, the through design of this plane and the folding seam ensures that the rotation angle of the plate 11 is precisely controllable, avoiding folding offset caused by stress interference, and improving the regularity and stability of thick plate folding.

[0074] Reference Figures 1-5 This application further proposes a folding guide portion including a plurality of vertically extending first folding portions spaced apart on the front side of the main body 1, and a plurality of vertically extending second folding portions spaced apart on the back side of the main body 1. The first folding portions and the second folding portions are staggered, and the first folding portions and the adjacent second folding portions are spaced at the same distance and the distance is x.

[0075] Specifically, the main body 1 forms an alternating folding path through first and second folding sections arranged alternately on opposite sides. For example, the distance between the first folding section and the adjacent second folding section is the same as x, so that each plate 11 rotates along the axis of the trapezoidal groove during folding. The right-angle support surface of the flange can precisely limit the folding angle to 90°, avoiding offset or insufficient angle when folding thick plates. During the folding process, the plate 11 rotates around the flange of the trapezoidal groove, and the gradually narrowing groove structure guides the material to deform evenly, reducing stress concentration. After the fixing strap 4 of the wrapping component is wrapped around the edge of the folded body, the fastening of the snap fastener 42 can withstand the weight of the thick plate and prevent loosening during handling.

[0076] Compared to existing technologies, the folding guide structures of current folding plates are mostly straight-line indentations of equal width, which cannot limit the folding angle of thick plates and are prone to causing stacking misalignment. In contrast, this solution uses the cooperation of trapezoidal grooves and flanges to form rigid support during folding, ensuring 90° folding angle accuracy; the staggered front and back folding parts avoid direct contact between the front or back of adjacent plates 11, reducing interference during folding; and the fastening design of the wrapping component replaces the traditional straps, improving the fixing reliability of the thick plate folding body.

[0077] Through the above technical solution, this application solves the problems of folding offset and angle loss of control caused by high rigidity when folding thick plates. It achieves precise folding through the limiting structure of trapezoidal groove and flange, avoids layer interference by the staggered layout of the folding part, and the fastening and fixing of the wrapping component can withstand the weight of the thick plate and prevent loosening.

[0078] Reference Figures 1-5This application further proposes that the first folding part includes a first folding seam 2, and the second folding part includes a second folding seam 21. Both the first folding seam 2 and the second folding seam 21 are trapezoidal grooves whose width gradually decreases from the outside to the inside. A flange with a right-angled triangle cross-section is provided on the axis of the trapezoidal groove. When the plates 11 located on both sides of the trapezoidal groove rotate 90° around the flange, the right-angled surface of the flange forms an abutting support structure with the inner wall of the trapezoidal groove. It also includes a wrapping assembly provided outside the two outermost plates 11 of the folding body. The wrapping assembly is used to wrap the discrete folding edges of the folding body away from the guide folding part. The wrapping assembly includes a fixing strap 4. The fixing strap 4 is provided at the end of one of the outermost plates 11 of the folding body. The end of the fixing strap 4 is provided with a female buckle 41, and the outer side of the other plate 11 is provided with a female buckle 42 that cooperates with the female buckle 41.

[0079] The trapezoidal groove is a folding seam with a trapezoidal cross-section, specifically achieved by using a hot-pressing process to form a groove with gradually changing width on the surface of plate 11. This structure allows for precise control of the folding angle during plate 11 folding around its axis through the cooperation of the groove wall and the flange. The flange is a triangular protrusion on the axis of the trapezoidal groove, specifically a right-angled triangular prism structure integrally formed with plate 11. When plate 11 rotates around the flange, the right-angled face of the flange contacts the inner wall of the trapezoidal groove, forming a mechanical limit to prevent over-folding. The wrapping assembly is a structure used to constrain the edges of the folded body, specifically achieved by combining flexible strips and fasteners. The fixing strap 4 is a strip-shaped component connecting to the outer layer plate 11 of the folded body, specifically achieved by using nylon webbing or elastic rubber strips. The male buckle 41 and female buckle 42 are reusable connecting components, specifically achieved by using snap fasteners, magnetic snaps, or button fasteners.

[0080] During the folding process of plate 11, the gradual width design of the trapezoidal groove allows the material to deform gradually during folding, avoiding stress concentration. When plate 11 rotates 90° around the flange, the right-angled surface of the flange forms a surface contact with the side wall of the trapezoidal groove. At this point, plate 11 cannot continue to rotate, ensuring accurate folding angle. The fixing strap 4 of the wrapping component wraps around the edge of the folded body after folding, and forms a closed-loop constraint through the engagement of the male buckle 41 and the female buckle 42, preventing the edges of the folded body from loosening due to its own weight or external forces.

[0081] Compared to existing technologies, current folding panels mostly use equal-width folding seams and simple straps for fixation, which leads to problems such as folding angle deviation and fixation failure. This solution achieves mechanical positioning through the cooperation of trapezoidal grooves and flanges, improving folding accuracy compared to traditional straight folding seams; it uses 42 snap fasteners instead of Velcro to avoid fixation failure caused by adhesive decay, making it particularly suitable for folding heavy, thick plates.

[0082] Through the above technical solution, this application effectively solves the problem of edge dispersion after thick plate folding, ensuring the structural integrity of the folded body during handling or vibration. The abutment support structure of the flange and trapezoidal groove keeps the folding angle stably controlled at 90°, avoiding interlayer gaps caused by insufficient or excessive folding. The combined wrapping design of the fixing strap 4 and the snap fastener 42 can withstand the self-weight of the thick plate folded body and prevent loosening and deformation of the folded edge due to stress release.

[0083] This application further proposes a folding method for a folding plate, specifically including the following steps: Structural identification: Identify the front and back sides of the main body 1 of the folding plate, identify the vertically spaced first folding portions on the front side, the vertically spaced second folding portions on the back side, and the guide folding portions distributed laterally along the axis of the main body 1. The area where the guide folding portions connect with the first and second folding portions is provided with stress relief components, and the main body 1 has been divided into several plates 11 with a width of x by the first and second folding portions and the guide folding portions; Z-shaped folding: Guide the corresponding plate 11 to fold towards the back of the main body 1 along the first folding seam 2 of the first folding portion until the plate 11 rotates 90° around the right-angled triangular flange on the axis of the trapezoidal groove, and the right-angled surface of the flange forms abutment support with the inner wall of the trapezoidal groove; then guide the next plate 11 to fold towards the front of the main body 1 along the second folding seam 21 of the adjacent second folding portion, and rotate 90° until the flange abuts support with the trapezoidal groove; repeat this alternating pattern. Fold all the panels 11 in sequence to form a long strip Z-shaped folded body; Guided folding: Align the Z-shaped folded body with the guide folding part along the axis of the main body 1, guide the corresponding panel 11 to fold inward along the first folding seam 301 of the first folding part 3 on the back, and guide the adjacent panel 11 to fold inward along the second folding seam 311 of the second folding part 31 on the front. During the folding process, the guide groove 6 of the stress relief component or the flexible compression plane 5 releases the stress in the connection area. With the help of the design of the first folding seam 301, the second folding seam 311 and the axis increasing step by step, each layer of panel 11 can rotate at least 90° without interference until the Z-shaped folded body is folded and attached along the guide folding part to form a double-layer folded structure; Wrapping and fixing: Wrap the fixing strap 4 at the end of one of the outermost panels 11 of the folded body around the discrete folding edge of the folded body away from the guide folding part, so that the male buckle 41 at the end of the fixing strap 4 is fastened with the female buckle 42 of the other outer panel 11, and the folded body is fixed.

[0084] Structural identification refers to distinguishing the front and back of the main body 1 and the position of the folded parts through visual or tactile markings. This can be achieved using color markings, raised dots, or texture differences to ensure accurate positioning of each structure before folding. Z-shaped folding refers to folding the panels 11 in alternating directions to form continuous folds. This can be achieved by using trapezoidal grooves and flanges to achieve a 90° limit, preventing folding offset or insufficient angle. Guided folding refers to folding the Z-shaped folded body along the axial direction. This is achieved by gradually increasing the spacing of the folding seams through staggered settings, providing rotation space for panels 11 of different thicknesses and preventing squeezing interference. Wrapping and fixing refers to constraining the edges of the folded body through fixing straps 4 and fastening structures. This can be achieved using nylon straps and buckle assemblies to ensure the stability of the thick plate after folding.

[0085] Specifically, during the structural identification stage, the front and back of the main body 1 are clearly distinguished by the differentiated folding layout, for example, a first folding seam 2 is set on the front and a second folding seam 21 is set on the back. During the Z-shaped folding process, each plate 11 rotates along the axis of the trapezoidal groove until the flange abuts against the inner wall of the groove, forming a self-locking support structure to ensure the accuracy of the folding angle. During the guided folding, the stress relief component disperses the stress at the cross corner through the guide groove 6 or the flexible plane, while the progressively increasing folding seam spacing allows the outer thick plate 11 to rotate fully, avoiding contact with the inner thin layer. During the wrapping and fixing stage, the fixing strap 4 is wrapped around the discrete folding edge and then locked by the snap fastener 42 to eliminate the risk of loosening caused by the weight of the thick plate.

[0086] Compared to existing technologies, current folding methods lack a clearly defined step-by-step operation process, leading to confusion during the folding of thick plates. For example, attempting to fold in half without first completing the Z-shaped fold can cause layer misalignment. Furthermore, existing technologies lack stress relief and progressive spacing design, making interlayer interference difficult to avoid during folding. This method, through step-by-step operation and structural adaptation, systematically solves the process control and physical limitations problems of thick plate folding.

[0087] Through the above technical solutions, this application achieves standardized operation of the thick plate folding process, solving problems such as folding offset, angle loss of control, stress concentration, and loose fixation. The Z-shaped folding step ensures folding accuracy and stacking regularity; the guide folding step avoids interference through step-by-step spacing and stress elimination; the wrapping and fixing step provides reliable edge constraints, enabling the thick plate folded body to maintain a stable shape during handling or use.

[0088] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0089] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0090] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A folding board, characterized in that, The plate body (1) has a front surface and a back surface, and a plurality of vertically extending folding guide portions are staggered on the front surface and the back surface of the plate body (1) and are used for guiding the Z-shaped folding of the plate body (1) into a folded body; The plate body (1) is provided with a guide folding portion transversely arranged on the plate body (1), and a stress relieving assembly is arranged at a region where the guide folding portion is connected with the folding guide portion, so as to realize the folding of the folded body along the guide folding portion.

2. A folding board according to claim 1, wherein The folding guide portions and the guide folding portion divide the plate body (1) into a plurality of plate blocks (11) with the same width, the width of the plate block (11) is x, the guide folding portion comprises a first folding portion (3) and a second folding portion (31), the first folding portion (3) is arranged on the back surface of the plate body (1) along the axis of the plate body (1) at intervals, the interval between adjacent first folding portions (3) is x, the second folding portion (31) is arranged on the front surface of the plate body (1) along the axis of the plate body (1) at intervals, the interval between adjacent second folding portions (31) is x, the first folding portion (3) and the second folding portion (31) are arranged in a staggered manner, so that one of the front surfaces of two adjacent plate blocks (11) is the first folding portion (3), and the back surface of the other plate block (11) is the second folding portion (31).

3. A folding board according to claim 2, wherein The first folding portion (3) comprises two first folding seams (301) which are symmetrically arranged along the axis of the plate body (1), the first folding seam (301) is a hot-pressed folding groove structure with a right-angled triangular cross section, when the plate blocks (11) on both sides of the first folding seam (301) are folded inward by 90° along the first folding seam (301), the side edges of the region between the two first folding seams (301) and the side edges of the folding groove structure form a supporting structure in abutting cooperation, the second folding portion (31) comprises two second folding seams (311) which are symmetrically arranged along the axis of the plate body (1), the second folding seam (311) is a hot-pressed folding groove structure with a right-angled triangular cross section, when the plate blocks (11) on both sides of the second folding seam (311) are folded inward by 90° along the second folding seam (311), the side edges of the region between the two second folding seams (311) and the side edges of the folding groove structure form a supporting structure in abutting cooperation.

4. A folding board according to claim 3, wherein The stress relieving assembly comprises a flexible folding area which is hot-pressed at a region where the guide folding portion is connected with the first folding seam (301) and the second folding seam (311).

5. The folding board of claim 3, wherein, The distances between the first folding seam (301) and the second folding seam (311) and the horizontal axis arranged in the arrangement direction of the plate blocks (11) increase gradually.

6. A folding board according to claim 5, wherein The flexible folding area is hot-pressed on the folding guide portion to form a guide groove (6) which penetrates through the adjacent first folding seam (301) or second folding seam (311), the guide groove (6) is used for guiding the plate blocks (11) on both sides of the first folding seam (301) or second folding seam (311) to rotate by at least 90°.

7. A folding board according to claim 4, wherein The flexible folding area adopts a hot pressing process to press a flexible compression plane (5) on the folding guide part, the flexible compression plane (5) is used for guiding the rotation of the plate blocks (11) on both sides of the first folding slot (301) or the second folding slot (311) by at least 90 degrees.

8. The folding board of claim 1, wherein, The folding guide part comprises a plurality of vertically extending first folding parts arranged at intervals on the front surface of the plate body (1), and a plurality of vertically extending second folding parts arranged at intervals on the back surface of the plate body (1), the first folding parts and the second folding parts are arranged in a staggered manner, and the interval between the first folding part and the adjacent second folding part is x.

9. A folding board according to claim 8, wherein, The first folding part comprises a first folding slot (2), and the second folding part comprises a second folding slot (21), the first folding slot (2) and the second folding slot (21) are both trapezoidal grooves with gradually decreasing widths from outside to inside, and a flange with a right-angled triangular cross section is arranged on the axis of the trapezoidal groove, when the plate blocks (11) on both sides of the trapezoidal groove rotate 90 degrees around the flange, the right-angled surface of the flange and the inner wall of the trapezoidal groove form an abutting support structure; It also comprises a wrapping assembly arranged outside the two outermost plate blocks (11) of the folding body, the wrapping assembly is used for wrapping the discrete folding edges on the side of the folding body away from the guide folding part, the wrapping assembly comprises a fixing belt (4), the fixing belt (4) is arranged at the end of one of the two outermost plate blocks (11) of the folding body, and a sub-buckle (41) is arranged at the end of the fixing belt (4), and the other plate block (11) is provided with a female buckle (42) matched with the sub-buckle (41).

10. A folding method of a folding board, characterized by, Specifically comprising the following steps: S1, structure identification: confirming the front and back surfaces of the plate body (1) of the folding plate as claimed in any one of claims 1-9, clearly arranging the vertical first folding parts at intervals on the front surface, arranging the vertical second folding parts at intervals on the back surface, and arranging the guide folding parts transversely distributed at the axis of the plate body (1), the guide folding parts are provided with stress relief assemblies at the connection areas of the first and second folding parts, and the plate body (1) has been separated into a plurality of plate blocks (11) with a width of x by the first, second and guide folding parts; S2, Z-type folding: guiding the corresponding plate block (11) to fold towards the back surface of the plate body (1) along the first folding slot (2) of the first folding part, until the plate block (11) rotates 90 degrees around the right-angled triangular flange on the axis of the trapezoidal groove, and the right-angled surface of the flange abuts and supports the inner wall of the trapezoidal groove; then guiding the next plate block (11) to fold towards the front surface of the plate body (1) along the second folding slot (21) of the adjacent second folding part, and also rotating 90 degrees to abut and support the flange and the trapezoidal groove; fold all the plate blocks (11) in turn according to this alternating rule to form a long strip-shaped Z-type folding body. S3, guide folding: align the Z-shaped folding body along the axis of the plate body (1) to guide the folding part, guide the corresponding plate (11) to fold inward along the first folding seam (301) of the back first folding part (3), guide the adjacent plate (11) to fold inward along the second folding seam (311) of the front second folding part (31), in the folding process, the guide groove (6) or the flexible compression plane (5) of the stress relief assembly releases the stress of the connection area, by the design that the distance between the first folding seam (301), the second folding seam (311) and the axis increases gradually, each layer of plate (11) rotates at least 90° without interference, until the Z-shaped folding body is folded along the guide folding part to form a double-layer folding structure; S4, wrapping and fixing: winding the fixing belt (4) at the end of one of the outermost plate (11) of the folding body around the discrete folding edge away from the guide folding part, so that the sub-buckle (41) at the end of the fixing belt (4) is buckled with the female buckle (42) of the other outer plate (11), and the fixing of the folding body is completed.

11. Use of a folding board according to any one of claims 1-9, characterized in that Any application scene for automobile windshield shielding protection, outdoor mat, children's crawling mat.

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