阅读说明：本技术 一种加厚封边一体化的自折叠纸基夹芯板及其成型工艺 (Thickening and edge sealing integrated self-folding paper-based sandwich board and forming process thereof ) 是由 郝景新 于利亚 张海婷 吴新凤 杜俊波 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种加厚封边一体化的自折叠纸基夹芯板及其成型工艺,所述加厚封边一体化的自折叠纸基夹芯板的基材是由至少包含两层覆面材料,一层胞元结构芯层胶合组成的覆面板；根据所需要夹芯板件形状和尺寸确定覆面板开槽点、切割轨迹,在折板边上开设90°V型槽和相邻连续V型槽,保留最底层覆面材料全部或部分不被切割。在断板边上开设135°或90°坡口,切割深度为覆面板本身的厚度。所述加厚封边一体化的自折叠纸基夹芯板展开状态为多连板式结构,通过对角折叠、正反面折叠和双面折叠等方式来达到多种转换。本发明的成型方法使用切割机切割V型槽和坡口,沿槽、坡口将覆面板顺势胶接。成型工艺包括以下步骤：S1：制备覆面板；S2：编写纸板切割机运行程序,确定开槽点；S3：自折叠胶粘压制成型。(The invention discloses a thickening and edge sealing integrated self-folding paper-based sandwich panel and a forming process thereof, wherein a base material of the thickening and edge sealing integrated self-folding paper-based sandwich panel is a covering panel which at least comprises two layers of covering materials and a layer of cellular structure core layer; and (3) determining grooving points and cutting tracks of the covering panel according to the shape and size of the required sandwich plate, forming 90-degree V-shaped grooves and adjacent continuous V-shaped grooves on the edges of the folded plates, and keeping all or part of the covering material at the bottommost layer from being cut. A135-degree or 90-degree groove is formed on the edge of the broken plate, and the cutting depth is the thickness of the cladding plate. The self-folding paper-based sandwich board with the integrated thickened and sealed edges is of a multi-connecting-plate structure in an unfolded state, and achieves multiple conversions through diagonal folding, front and back folding, double-side folding and the like. The forming method of the invention uses a cutting machine to cut the V-shaped groove and the groove, and the cladding panel is glued along the groove and the groove. The molding process comprises the following steps: s1: preparing a covering panel; s2: writing an operation program of a paperboard cutting machine, and determining a slotting point; s3: and (5) self-folding, gluing, pressing and forming.)

1. The utility model provides a thickening banding integration from folding paper base battenboard which characterized in that: the base material of the thickening and edge sealing integrated self-folding paper-based sandwich panel is a covering panel (0) which at least comprises two layers of covering materials (1) and a layer of cellular structure core layer (2) which are glued together; determining a cutting form of the covering panel (0) according to the shape and the size of the plate, and automatically folding and wrapping the covering panel (0) provided with the V-shaped groove (3) and the groove (4) on each section to form the covering panel, wherein the thickness of the folded plate is 2 times that of the original covering panel (0).

2. The thickened edge sealed integrated self-folding paper-based sandwich panel according to claim 1, wherein: and V-shaped grooves are formed in the edges of the folded plates of the covering panels (0), all or part of the covering material (1) at the lowest layer is kept from being cut, the angle (alpha) of the V-shaped grooves on the edges of the folded plates is 90 degrees, adjacent and continuous V-shaped grooves are formed in the connecting edges of the upper panel and the lower panel, and the center lines of the grooves are perpendicular to the covering material at the lowest layer. The bevel (4) is arranged on the edge of the broken plate, the bevel cutting angle (beta) is 135 degrees or 90 degrees, and the edge of the bevel with an obtuse angle cut out is superposed with the bottom cladding material. The grooves corresponding to the glue joint are complementary, and the cutting track is the outer contour of the multi-connecting plate.

3. The thickened edge sealed integrated self-folding paper-based sandwich panel according to claim 1, wherein: the outer contour of the multi-connecting plate is dynamic and various, the positions of the connecting edge (A) and the cutting plate edge (B) of the multi-connecting plate are dynamically changed according to the shape to be formed, and the positions (A) and (B) are the feed tracks of the cutting machine.

4. The thickened edge sealed integrated self-folding paper-based sandwich panel according to claim 1, wherein: the self-folding and unfolding state is a multi-connecting-plate structure, the folding direction of the multi-connecting plates can be freely adjusted, and various conversions can be achieved through modes of diagonal folding, front and back folding, double-side folding and the like. The cross section of the formed plate is quadrilateral, and the plate is in a multi-connection plate type such as a hollow type, a laminated type, an axial symmetry type and the like.

5. The thickened edge sealed integrated self-folding paper-based sandwich panel according to claim 1, wherein: the covering material (1) is a covering material for furniture such as paper boards, kraft paper boards and PVC within 3mm, and the cellular structure core layer (2) is a honeycomb core layer or a corrugated core layer.

6. The molding process of the self-folding paper-based sandwich panel with integrated thickened edge sealing according to claim 1, characterized in that:

s1: preparing a covering panel: the core layer is glued on the standard cladding material by white latex to form the cladding panel, and the cutting form is determined according to the required panel.

S2: writing an operation program of the paperboard cutting machine, and determining a slotting point: fixing the covering panel, compiling a feed track, and cutting transversely and then longitudinally.

S3: self-folding adhesive pressing and forming: and (4) automatically folding and wrapping each section of the grooved covering panel, and uniformly gluing, pressing and shaping for 24 hours.

Technical Field

The invention mainly relates to the technical field of forming and edge sealing of a paper-based sandwich panel, in particular to a thickening and edge sealing integrated self-folding paper-based sandwich panel and a forming process thereof.

Background

At present, all-paper plates and furniture products thereof have the advantages of no aldehyde, degradability, recyclability and the like, and have wide application prospects in the fields of children furniture, display products and the like. However, the cardboard itself has longer and relatively soft fibers, and if a milling edge sealing process or a milling forming process similar to an artificial board is adopted, quality defects such as edge burrs, edge scraping and the like are very serious. Therefore, the development of a sealing and forming process suitable for paper-based panels is the key to solve the above problems. The invention provides a self-folding paper-based sandwich panel integrating thickening and edge sealing and a forming method thereof. The method fully utilizes the characteristic that the paper-based material is easy to cut, innovatively realizes the integrated self-folding forming edge sealing between the paper-based plates through the characteristic that the V-shaped grooves can be bent and the mode that the adjacent continuous V-shaped grooves are folded and thickened. The covering panel is provided with a V-shaped groove and a groove, the covering panel is folded along the groove and the groove, the cutting mode can freely adjust the folding direction according to the preset requirement, and the front side and the back side of the V-shaped groove are folded to achieve multiple conversions. The forming method has the advantages of small joint, beautiful edge sealing, difficult warping, material saving, simple process and contribution to industrial production.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the thickening, edge sealing and self-folding integrated forming method for the paper-based composite board, which is convenient for mechanical production, stable in production quality, high in production efficiency, extremely low in material loss, dense in glued joint and attractive in appearance.

In order to solve the technical problems, the invention adopts the following technical scheme:

the base material of the thickening and edge sealing integrated self-folding paper-based sandwich panel is a covering panel which at least comprises two layers of covering materials and a layer of cellular structure core layer which is glued. And (3) determining a grooving point and a cutting track according to the shape and the size of the required plate, forming a V-shaped groove with a connection angle of 90 degrees on the edge of the folded plate, wherein the central line of the V-shaped groove is vertical to the horizontal plane of the bottommost layer covering material, and keeping all or part of the bottommost layer covering material from being cut. A135-degree or 90-degree groove is formed on the edge of the broken plate, and the cutting depth of the groove is the thickness of the cladding plate. The self-folding paper-based sandwich board with the integrated thickened and sealed edges is of a multi-connecting-plate structure in an unfolded state, and achieves multiple conversions through diagonal folding, front and back folding, double-side folding and the like. The covering panel is glued along the V-shaped groove and the groove, and the thickness of the folded plate is 2 times of that of the original plate. The forming method of the invention uses a cutting machine to cut the V-shaped groove and the groove, and the running track of the cutting machine is determined according to the folding form.

As a further improvement to the above technical solution:

the upper panel and the lower panel are connected by adjacent continuous V-shaped groove folding, the panels and the side plates are connected by V-shaped groove folding, a multi-connecting plate type structure is formed, and the groove is surplus after being spliced. The bottom layer facing material is left uncut and the six faces are connected by the flexibility and internal bonding strength of the bottom layer material. The facing material (1) comprises oily paper, PVC, PP, paperboard and other facing materials for furniture. The thickness of the facing material is within 3 mm. The cellular structure core layer (2) comprises a corrugated core layer, a honeycomb core layer and the like. Compared with the prior art, the invention has the following beneficial effects:

the thickened edge-sealed integrated self-folding paper-based sandwich board is formed by self-folding a plurality of connecting plates provided with V-shaped grooves, so that the edge-sealed quality and efficiency of the paper-based material are improved, burrs and warping at joints are avoided, the material loss is reduced, and the cost is reduced. The molding method is more convenient for mechanized production, stable in production quality and beautiful in appearance. The plate can be bent in multiple angles and any shape.

As a general inventive concept, the invention also provides a forming method of the thickening and edge sealing integrated self-folding paper-based sandwich panel, which comprises the following steps:

s1: preparing a covering panel: the core layer is glued on the standard cladding material by white latex to form the cladding panel, and the cutting form is determined according to the required panel.

S2: writing an operation program of the paperboard cutting machine, and determining a slotting point: fixing the covering panel, compiling a feed track, and cutting transversely and then longitudinally.

S3: self-folding adhesive pressing and forming: and (4) automatically folding and wrapping each section of the grooved covering panel, and uniformly gluing, pressing and shaping for 24 hours.

Compared with the prior art, the technology has the advantages that:

the technology breaks through the difficult problem that the paper-based material can not be milled and sealed, can be used for customized sealing of one side, two sides, three sides or four sides of the paper-based sandwich composite board, realizes the integration of self-folding thickened sealing of the hollow core covering board, and supports the core layer and the substrate to form a stable structure. The technology simultaneously meets the requirements of bearing and direct edge sealing of the paper-based structure, can adopt a multi-connecting-plate preparation process, and has the advantages of simple process, easy industrialization and low cost production. The edge sealing set by the forming method can be customized and orderly regulated and controlled according to the requirements of different products, different plates or different parts, and the purposes of individuation and accurate design are met.

Drawings

FIG. 1 is a schematic structural view of a cover panel in an unfolded state according to embodiment 1 of the present invention;

FIG. 2 is a schematic view of a folded and thickened edge sealing semi-transparent structure of a composite board in an embodiment 1 of the invention;

FIG. 3 is a schematic diagram showing a half-developed structure of example 1 of the present invention;

FIG. 4 is a schematic structural view of a composite sheet according to embodiment 2 of the present invention in a half-unfolded state;

FIG. 5 is a schematic structural view of a cover panel in an unfolded state according to example 2 of the present invention;

FIG. 6 is a schematic view of a folded and thickened edge sealing semi-transparent structure of a composite board in embodiment 2 of the invention;

FIG. 7 is a schematic structural view of a cover panel in an unfolded state according to example 3 of the present invention;

FIG. 8 is a schematic view of a folded and thickened edge banding semi-transparent structure of a composite plate according to embodiment 3 of the invention;

FIG. 9 is a schematic structural view of a cover panel in an unfolded state according to example 4 of the present invention;

FIG. 10 is a schematic view of a folded and thickened edge banding semi-transparent structure of a composite plate according to embodiment 4 of the invention;

the reference numerals in the figures denote: 0. a cover plate; 1. a facing material; 2. a core layer; 3. a V-shaped groove; 4. beveling; angles of the alpha and V-shaped grooves; beta, groove angle; A. a multi-connecting plate connecting edge; B. and (5) cutting the plate edges.

Example 1 was carried out: six-side edge banding of six-connecting plate

Fig. 1 to 4 show an embodiment 1 of the present invention, which relates to a self-folding paper-based sandwich panel with integrated thickened edge sealing, wherein the multiple sheets are six sheets, the self-folding section of the paper-based composite panel is quadrilateral, and 2 upper and lower surfaces and side edges are thickened by self-folding edge sealing. Two pieces of standard 2440mm by 1220mm by 1mm kraft board were glued with a 20mm thick honeycomb core to form a cover sheet, pressed for 24h and shaped. And (3) fixing the covering panel on a cutting machine, cutting the outer contour cutting panel edge (B) of the six-connecting-panel by 135 degrees by using the cutting machine, and cutting a groove. And a V-shaped groove is formed in the connecting edge (A) of the multi-connecting plate, so that the bottom cladding material is not cut, and the cutting angle is 90 degrees. And adjacent continuous V-shaped grooves are formed at the joint of the upper plate and the lower plate, so that the bottommost layer of cladding material is not cut, and the cutting angle is 90 degrees. Glue is coated on the groove opening and the bevel face, and the self-folding paper-based sandwich board is formed by self-folding the groove opening and the bevel face into a cuboid along the connecting edge of the multi-connecting board and the cutting edge of the board.