CN110641098B - Device and method capable of continuously producing honeycomb sandwich and sandwich composite plate - Google Patents

Device and method capable of continuously producing honeycomb sandwich and sandwich composite plate Download PDF

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Publication number
CN110641098B
CN110641098B CN201910930184.4A CN201910930184A CN110641098B CN 110641098 B CN110641098 B CN 110641098B CN 201910930184 A CN201910930184 A CN 201910930184A CN 110641098 B CN110641098 B CN 110641098B
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Prior art keywords
sandwich
sheet
honeycomb
corrugated
forming roller
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CN110641098A (en
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袁瑞建
元吉玉
杨正高
陈钢
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Guangdong Jushi Composite Material Co ltd
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Guangdong Jushi Composite Material Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B32B2037/1223—Hot-melt adhesive film-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres

Abstract

The invention discloses a device and a method for continuously producing honeycomb sandwich and sandwich composite board, relating to the technical field of sandwich board manufacturing, wherein the device for continuously producing honeycomb sandwich and sandwich composite board comprises a feeding mechanism; the forming roller mechanism is connected with the feeding end of the feeding mechanism at the feeding end and comprises two forming rollers which are oppositely arranged, and a sheet forming space is formed between the two forming rollers; a cutting mechanism comprising at least one upper blade and at least one lower blade, the upper blade alternating with the lower blade, the upper blade being disposed parallel to the adjacent lower blade; the folding mechanism comprises at least two folding brush rollers, and the rotating speeds of the two folding brush rollers are different; and a baking mechanism comprising a crawler compound machine. The invention can realize continuous production, has high production efficiency, and the produced honeycomb sandwich and sandwich composite board have uniform thickness, no deformation of the structure and high compression and bending strength.

Description

Device and method capable of continuously producing honeycomb sandwich and sandwich composite board
Technical Field
The invention relates to the technical field of sandwich panel manufacturing, in particular to a device capable of continuously producing honeycomb sandwich and sandwich composite boards, and further relates to a method capable of continuously producing the honeycomb sandwich and the sandwich composite boards.
Background
Honeycomb sandwich panels are typically panels made of upper and lower face sheets bonded to opposite sides of a honeycomb core. It is widely applied to various fields with the advantages of light weight, heat preservation, low price, high strength, recoverability and the like. At present, honeycomb sandwich products in the market mainly comprise paper honeycombs, plastic honeycomb cores and metal aluminum honeycombs. The paper honeycomb is in a regular hexagon and corrugated structure formed by gluing, cutting, bonding and processing kraft paper, and odor and VOC exceed standards due to the use of an adhesive; when the honeycomb plate is used, stretching, baking and shaping are needed, uncertainty of the shape of the core which is not stretched properly occurs, and the compression resistance of the honeycomb plate is reduced. The plastic honeycomb solves the problems of easy wetting and damp of the paper honeycomb, and solves the problems of high price, poor sound insulation effect and poor corrosivity of the aluminum honeycomb, and is widely applied to the fields of automobiles, buildings, transportation, logistics packaging, furniture manufacturing and the like.
In the course of implementing the present invention, the inventor found that at least the following problems exist in the prior art, and at present, the plastic honeycomb core is formed by a main circular hole array-indirect method, a hexagonal folding-continuous method, and the like. The circular hole display-indirect method process is complex, comprises the procedures of plasticizing and extruding a thin tube, cutting to a fixed length, manually typesetting, baking and bonding, cooling and shaping, slicing and the like, cannot realize continuity in the production of composite boards, has low mass production efficiency, leads to high cost, and needs the splicing of core materials to reduce the bending strength of the sandwich board; the hexagonal folding continuous method relates to a series of hot plastic molding, folding and bonding operations, but the vacuum plastic molding precision is poor, the molding speed is lower than 3m/min, and the uniformity of the wall thickness of the honeycomb and the consistency of the size are difficult to ensure; the bending strength and the compression strength of the sandwich panel are influenced by the phenomena of hole breaking or incapability of forming of the low-gram-weight thin-wall or glass fiber reinforced thermoplastic resin.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the invention provides a device capable of continuously producing honeycomb sandwich and sandwich composite plates, which can continuously produce the honeycomb sandwich and the sandwich composite plates and improve the production efficiency.
The embodiment of the invention also provides a method for continuously producing the honeycomb sandwich and the sandwich composite plate.
According to the embodiment of the first aspect of the invention, the device capable of continuously producing the honeycomb sandwich and the sandwich composite plate comprises a feeding mechanism; the forming roller mechanism is connected with the feeding end of the feeding mechanism at the feeding end and comprises two forming rollers which are oppositely arranged, and a sheet forming space is formed between the two forming rollers; a cutting mechanism comprising at least one upper blade and at least one lower blade, the upper blade alternating with the lower blade, the upper blade being disposed parallel to the adjacent lower blade; the folding mechanism comprises at least two folding brush rollers, and the rotating speeds of the two folding brush rollers are different; and a baking mechanism comprising a crawler compound machine.
The device capable of continuously producing the honeycomb sandwich and the sandwich composite board at least has the following beneficial effects: the casting sheet is extruded through the feeding mechanism, the forming roller mechanism can press the casting sheet into a corrugated sheet, the upper blade and the lower blade cut the corrugated sheet into a foldable corrugated array, the folding mechanism further performs N-type folding arrangement on the corrugated array to form a honeycomb grid, the baking mechanism bakes the honeycomb grid, the honeycomb grid is cooled and bonded to form a honeycomb sandwich, and the upper end face and the lower end face of the honeycomb sandwich are covered and bonded with the upper surface skin and the lower surface skin to form the sandwich composite board. The device for continuously producing the honeycomb sandwich and the sandwich composite plate can be used for continuous production, has high production efficiency, and the produced honeycomb sandwich and the sandwich composite plate have uniform thickness, no deformation of the structure and high compression and bending strength.
According to the embodiment of the first aspect of the invention, the forming rollers are respectively provided with the forming roller convex grooves and the forming roller concave grooves in a staggered manner, and the forming roller convex grooves of one forming roller are matched with the corresponding forming roller concave grooves of the other forming roller.
According to an embodiment of the first aspect of the present invention, the forming roll groove has a cross section in one of a trapezoid shape, a rectangular shape, and a triangular shape.
According to an embodiment of the first aspect of the present invention, an air cooling device and a transverse trimming cutter assembly are sequentially disposed between the forming roller mechanism and the cutting mechanism, and the transverse trimming cutter assembly includes trimming cutters distributed on the left and right sides.
According to an embodiment of the first aspect of the invention, the track compounding machine further comprises a size cutter at the output end of the track compounding machine.
According to the embodiment of the second aspect of the invention, a method for continuously producing honeycomb core and core composite board is provided, which is characterized in that: the device for continuously producing the honeycomb sandwich and the sandwich composite plate as claimed in any one of claims 1 to 4 is used for extruding the casting sheet, pressing the casting sheet into the corrugated sheet, cutting, N-folding, baking, cooling, shaping and cutting the corrugated sheet to form the honeycomb sandwich with the honeycomb net structure, and then covering and pasting the upper and lower surface skins on the upper and lower end faces of the honeycomb sandwich to form the sandwich composite plate.
According to an embodiment of the second aspect of the invention, the method comprises the following steps: s1, extruding the cast sheet of thermoplastic resin on line through a feeding mechanism; s2, receiving the casting sheet by the forming roller mechanism, and pressing the casting sheet into a corrugated sheet by the forming roller; s3, the corrugated sheet comprises an upper plane, a lower plane and a slope surface which are connected in series, the upper blade edge cuts the upper plane and the slope surface, the lower blade edge cuts the lower plane and the slope surface, and therefore the corrugated sheet is cut into a corrugated array, and the corrugated array is provided with upper cuts and lower cuts which are distributed continuously and alternately up and down; s4, changing each mutually connected corrugated array from horizontal to vertical through mutually interfered folding brush rollers, folding and arranging the corrugated arrays according to an N shape, and forming the corrugated arrays into a tightly arranged honeycomb grid through a crawler; s5, baking the honeycomb grids through a crawler-type compound machine to form an integrated honeycomb sandwich; s6, covering and sticking upper and lower skins on the upper and lower end surfaces of the honeycomb sandwich by a crawler-type compound machine to form a sandwich composite board; and S7, cutting the sandwich composite board.
According to the embodiment of the second aspect of the invention, in step S2, cooling water channels or heating elements are arranged inside the forming rollers, and the distance between the two forming rollers is adjustable.
According to the embodiment of the second aspect of the present invention, between step S2 and step S3, both sides of the corrugated sheet are cut respectively using the trimming cutters distributed on the left and right sides to remove the laterally unnecessary burrs.
According to an embodiment of the second aspect of the present invention, the upper and lower skin includes an upper skin and a lower skin, and the upper and lower skin is one of a thermoplastic resin sheet, a thermoplastic resin coil, a glass fiber reinforced sheet, a glass fiber reinforced coil, a metal sheet, and a metal coil.
The method for continuously producing the honeycomb sandwich and the sandwich composite board at least has the following beneficial effects: the honeycomb sandwich and the sandwich composite board can be continuously produced by pressing the casting sheet into the corrugated sheet, and cutting, N-folding, baking, cooling, shaping and cutting the corrugated sheet, and the efficiency is high.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the construction of a form roll mechanism in an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a structure of a corrugated sheet in an embodiment of the present invention;
FIG. 4 is a schematic cut view of a corrugated sheet in an embodiment of the present invention;
FIG. 5 is an N-folded side view of a corrugated array in an embodiment of the present invention;
FIG. 6 is an N-fold perspective view of a corrugated array in an embodiment of the present invention;
FIG. 7 is a schematic top view of a structural variation of a sandwich composite panel in accordance with an embodiment of the present invention;
FIG. 8 is a schematic diagram of a three-phase corresponding change of a square honeycomb sandwich structure according to an embodiment of the present invention;
fig. 9 is a partially enlarged view of a circle a in fig. 6.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it is to be understood that directional descriptions, such as terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., refer to the directional or positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, if the terms "first" and "second" are used, they are used for distinguishing technical features, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, "a plurality" means one or more, "a plurality" means two or more, "more than", "less than", "more than" and the like are understood as excluding the present number, "more than", "less than", "more than" and the like are understood as including the present number, unless specifically limited otherwise.
In the description of the present invention, unless otherwise explicitly limited, terms such as "disposed," "mounted," "connected," and "fixed" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention by combining the specific contents of the technical solutions.
In the description of the present invention, unless otherwise expressly limited, a first feature "on" or "under" a second feature may be directly contacting the first feature or indirectly contacting the second feature through intervening media. Also, a first feature may be "on" or "over" or "on" a second feature, and may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under" or "beneath" a second feature may be directly under or obliquely under the second feature, or simply indicate that the first feature is at a lesser level than the second feature.
Referring to fig. 1 to 9, the apparatus for continuously producing honeycomb core and core composite board of the present invention comprises a feeding mechanism, a forming roller mechanism 12, an air cooling device 13, a transverse trimming cutter assembly 14, a cutting mechanism 15, a folding mechanism 16, a baking mechanism 17 and a size cutter 18.
Wherein the feeding mechanism comprises an extruder head 11, and the feeding mechanism further comprises a coil feeding system, which is not shown in the figure.
The feeding end of the forming roller mechanism 12 is connected with the extruding end of the feeding mechanism, the forming roller mechanism 12 comprises two opposite forming rollers, a sheet forming space is arranged between the two forming rollers, as shown in fig. 1, the extruding machine head 11 extrudes a casting sheet 21 of continuous thermoplastic resin, and the casting sheet 21 enters the forming roller mechanism 12 for forming. In addition, specifically referring to fig. 2, each of the forming rollers is staggered with forming roller convex grooves 121 and forming roller concave grooves 122, wherein the forming roller convex grooves 121 of one forming roller are matched with the corresponding forming roller concave grooves 122 of the other forming roller. Further, the section of the forming roller groove 122 is one of trapezoid, rectangle and triangle, and similarly, the forming roller convex groove 121 of the other forming roller is matched with the forming roller groove. Each forming roller convex groove 121 and each forming roller concave groove 122 are distributed along the circumference of the corresponding forming roller in a staggered way. Wherein the spacing between the two forming rollers is defined as T1, and the spacing between the forming roller groove 121 of one forming roller and the corresponding forming roller groove 122 of the other forming roller is also T1, as shown in fig. 2. The corrugated sheet 22 is extruded by the forming roller mechanism 12, and the thickness of the corrugated sheet 22 is defined as T2, T2 is T1. As shown in fig. 3, the corrugated sheet 22 includes an upper flat surface 221, a lower flat surface 222, and a slope surface 223 that are continuously connected.
The air-cooling device 13 can cool the corrugated sheet 22.
The transverse trim cutter assembly 14 includes trim cutters distributed on left and right sides, which in this embodiment are referenced only to the corrugated sheet material 22 and should not be construed as limiting the present invention. Because the casting sheet 21 is extruded into the corrugated sheet 22 through the forming roller mechanism 12, redundant flashes are generated on the left side and the right side of the corrugated sheet 22, the flashes can be removed through the edge cutting cutter, the cutting edge of the edge cutting cutter is opposite to the running direction of the corrugated sheet 22, cut edges can be crushed and then are recycled to the production line on line and conveyed to the extruder head 11 again, and the crushing equipment is the prior art and is not described any more. In this case, the width of the corrugated sheet 22 is defined as W, and the size of W is determined by the distance between the two trim cutters.
The cutting mechanism 15 includes at least one upper blade 152 and at least one lower blade 151, and as shown in fig. 4, in the present embodiment, two upper blades 152 and two lower blades 151 are provided, wherein the upper blades 152 are alternately arranged with the lower blades 151, and the upper blades 152 are provided in parallel with the adjacent lower blades 151. The cutting heights of the upper blade 152 and the lower blade 151 are adjustable, and the distance between the upper blade 152 and the adjacent lower blade 151 is also adjustable, in this embodiment, the distance between the upper blade 152 and the adjacent lower blade 151 refers to the distance between the cutting edge of the upper blade 152 and the cutting edge of the adjacent lower blade 151 in the horizontal direction. Specifically, the upper blade 152 cuts the upper plane 221 and the slope surface 223 of the corrugated sheet 22, forming the upper cut 231 of the corrugated sheet 22, leaving the lower plane 222 as the second folded connection 246 of the corrugated sheet 22, and the lower blade 151 cuts the lower plane 222 and the slope surface 223 of the corrugated sheet 22, forming the lower cut 232 of the corrugated sheet 22, leaving the upper plane 221 as the first folded connection 245 of the corrugated sheet 22, as shown in fig. 5. The corrugated sheet 22 is cut by the cutting mechanism 15 and formed into a corrugated array 23. The spacing between an upper cutout 231 and an adjacent lower cutout 232 is defined as H.
The folding mechanism 16 includes at least two folding brush rollers, the two folding brush rollers have different rotating speeds, and the corrugated array 23 is N-folded and arranged by using the speed difference between the upper and lower folding brush rollers, as shown in fig. 5 and 6, and in addition, as shown in fig. 9, after the corrugated array 23 is N-folded and arranged, a honeycomb grid 24 is formed, the honeycomb grid includes a plurality of rows of corrugated core walls 241 arranged in sequence, the corrugated core wall 241 includes a first core wall 242, a connecting core wall 243 and a second core wall 244 connected in series, the first core wall 242 in the corrugated core wall 241 is connected with the first core wall 242 in the adjacent corrugated core wall 241 on one side, and the connection is a first folding connection portion 245 of the corrugated sheet 22; the second core wall 244 of a corrugated core wall 241 is connected to the second core wall 244 of an adjacent corrugated core wall 241 on the other side by a second folded connection 246 of the corrugated sheet 22.
The baking mechanism 17 comprises a crawler compound machine, the honeycomb grids 24 can be baked, cooled and shaped by the crawler compound machine, the corrugated core walls 241 are bonded and shaped by the crawler contact baking under the control of oil temperature to form an integrated honeycomb sandwich 25, and meanwhile, the upper surface skin 31 and the lower surface skin are respectively bonded and adhered to the upper end surface and the lower end surface of the honeycomb sandwich to form the sandwich composite plate 26.
Finally, the sandwich composite panel 26 is sawed using the size cutter 18 to meet the required size.
When the device capable of continuously producing the honeycomb sandwich and the sandwich composite plate is used, in order to meet the mutual connection of all the working procedures in the production of the honeycomb sandwich 25, the equipment parameter settings such as raw material extrusion amount, sheet rolling or traction speed, folding brush roller speed, crawler belt and plate discharging speed and the like are related and matched.
The extrusion amount Q is the extrusion speed V1 × width W × area density. The sheet rolling or drawing speed V2 is 2 multiplied by the honeycomb sandwich thickness H/aperture R multiplied by the sheet discharging speed V1; the speed of the folding brush rollers is adjusted according to different materials of the sheets, and the linear speed difference value of the upper folding brush roller and the lower folding brush roller is adjusted; the linear speed of the upper end folding brush roller is greater than that of the lower end folding brush roller; the hard material needs to increase the speed difference value to provide larger folding force; the linear speed of the lower end folding brush roller is more than three times of the plate discharging speed V1, so that the speed difference formed by the rolling or drawing speed V2 of the sheet and the plate discharging speed V1 provides the transverse force for the rising or falling of each corrugated array along the end-to-end connection position of each corrugated array, and the mutually interfered upper and lower folding brush rollers provide the longitudinal force along the folding line direction, so that the folding is smoother; the speed differential also allows for tighter cell to cell alignment. In addition, the upper blade 152, the lower blade 151 and the size cutter 18 are superior to a common blade in hot cutting, so that deformation caused by cutting the blade into a convex groove or a concave groove of a sheet can be avoided; the crawler belt contact type baking is controlled through the oil temperature, so that the honeycomb wall is prevented from deforming and bending, the structural integrity is kept, and the compression resistance is enhanced; for the honeycomb sandwich board, materials with flame retardance, heat absorption, formaldehyde removal and the like can be implanted into honeycomb holes before the upper and lower skins are compounded, so that the honeycomb sandwich board is functionalized.
In addition, the method for continuously producing the honeycomb sandwich and the sandwich composite plate of the embodiment of the invention uses the device for continuously producing the honeycomb sandwich and the sandwich composite plate to extrude the casting sheet 21, presses the casting sheet 21 into the corrugated sheet 22, cuts, folds in an N shape, bakes, cools and shapes the corrugated sheet 22, thereby forming the honeycomb sandwich 25 with a honeycomb net structure, and then covers and sticks the upper and lower surface skin on the upper and lower end surfaces of the honeycomb sandwich to form the sandwich composite plate 26.
Specifically, the method comprises the following steps:
s1, the cast sheet 21 of thermoplastic resin is extruded on-line by the feeding mechanism.
S2, the forming roller mechanism 12 receives the casting sheet 21, and the forming roller presses the casting sheet into a corrugated sheet 22; the inside of the forming roller is provided with a cooling water passage or a heating member, and the cast sheet 21 of the thermoplastic resin can be rolled by using the cooled forming roller, or the pre-extruded coil can be directly rolled by using the heated forming roller. The distance between the two forming rollers is adjustable.
S3, the corrugated sheet includes an upper plane, a lower plane and a slope surface connected in series, the upper blade 152 edge cuts the upper plane 221 and the slope surface 223, the lower blade 151 edge cuts the lower plane 222 and the slope surface 223, thereby cutting the corrugated sheet 22 into the corrugated array 23, the corrugated array 23 having upper cuts 231 and lower cuts 232 alternately distributed up and down in series.
S4, changing each of the corrugated arrays 23 connected to each other from horizontal to vertical by the mutually interfering folding brush rollers, the caterpillar tracks make up the corrugated arrays 23 into a closely arranged honeycomb grid 24 in an N-folded arrangement.
And S5, baking the honeycomb grids 24 by a crawler-type compound machine to form the integrated honeycomb sandwich 25.
And S6, adhering upper and lower skins to the upper and lower end surfaces of the honeycomb sandwich by a crawler-type compound machine to form the sandwich composite plate 26. The upper and lower surface skin includes upper surface skin 31 and lower surface skin, and the upper and lower surface skin is one of thermoplastic resin sheet, thermoplastic resin coiled material, glass fiber reinforced sheet, glass fiber reinforced coiled material, metal sheet and metal coiled material.
S7, cutting the sandwich composite board 26.
More preferably, between step S2 and step S3, both sides of the corrugated sheet are cut with trim cutters distributed on both left and right sides, respectively, to remove excess burrs in the transverse direction.
In particular, the device and the method for continuously producing the honeycomb core and the core composite board are described in the following by three specific examples.
Example one
PP hexagonalHoneycomb core and honeycomb battenboard, hexagonal honeycomb core: the aperture is 8mm, the thickness is 10mm, and the gram weight is 1000g/m 2The gram weight of the glass fiber felt with the upper and lower surface skin is 600g/m2The gram weight of the adhesive film is 100g/m2The product has a width of 1200mm, a length of 1000mm, a thickness of 10mm and a gram weight of 2400g/m2A honeycomb sandwich panel. The honeycomb sandwich glass fiber board is widely used for the cover plate of the automobile trunk, and has the advantages of light weight, sound insulation, noise reduction, moisture resistance, mildew resistance, high compression strength and bending strength and low cost; the preparation method comprises the following steps:
s1, adopting a 90# single screw extruder, setting the productivity to be about 100kg/h, extruding and casting the thermoplastic polypropylene resin sheet with the width of 1300mm and the thickness of 0.35mm, and conveying the sheet between two forming rollers;
s2, carrying out thermoforming on the cast sheet of the thermoplastic resin by a half-hexagonal forming roller with cooling water, wherein the length of the side of a groove of the forming roller and the side of a convex groove of the forming roller is 4.62mm, and the traction speed of the corrugated sheet and the linear speed of the forming roller are set to be about 25 m/min;
s3, removing the transverse redundant unformed flash from the corrugated sheet, wherein the transverse cutter spacing is 1250mm, and the corrugated sheet can be recycled to an extrusion production line on line after being crushed;
s4, cutting the upper blade and the lower blade into the corrugated sheet from the upper surface and the lower surface respectively, wherein the depth of the hot knife is 3.8mm, the positions of the upper cut and the lower cut are circularly alternated, the upper cut is connected with the lower plane correspondingly, the lower cut is connected with the upper plane correspondingly, and each corrugated array is ensured to be connected end to end; the horizontal distance between the upper blade and the lower blade is 10 mm;
S5, changing each mutually connected corrugated array from horizontal to vertical through mutually interfered folding brush rollers with different rotating speeds, and forming the corrugated arrays into a tightly arranged honeycomb grid through a crawler belt according to N-shaped folding arrangement; the linear speed of the upper end folding brush roller is 70m/min, the linear speed of the lower end folding brush roller is 50m/min, and the linear speed of the crawler belt is 10 m/min;
s6, controlling the contact baking of the crawler belts by the oil temperature of each corrugated array in the honeycomb grid, cooling and bonding the corrugated arrays to form an integral honeycomb sandwich; the baking temperature is 200 ℃, the pressure is 8MPa, and the plate discharging speed is 10 m/min;
s7, g weight 600g/m2Glass fiber felt with gram weight of 100g/m2The adhesive film and the honeycomb sandwich five layers of the middle layer are respectively laminated and baked, cooled and shaped by a crawler-type compounding machine; the baking temperature is 200 ℃, the pressure is 8MPa, and the plate discharging speed is 10 m/min;
s8, pressing and sawing the plate to produce the hexagonal honeycomb sandwich composite plate with the width of 1200mm and the length of 1000 mm.
Example two
A glass fiber modified PP hexagonal honeycomb core and a honeycomb sandwich board, the hexagonal honeycomb core: the aperture is 8mm, the thickness is 15mm, and the gram weight is 1800g/m2The gram weight of the upper and lower epidermis prepreg tapes is 1000g/m2The gram weight of the adhesive film is 100g/m2The production width is 1000mm, the length is 2400mm, the thickness is 15mm, and the gram weight is 4000g/m 2A honeycomb sandwich panel. The honeycomb sandwich glass fiber board is widely used for the box body of a logistics transport vehicle, and compared with the original iron plate, the honeycomb sandwich glass fiber board has the advantages of light weight, corrosion resistance, high compression and bending strength and low cost; the preparation method comprises the following steps:
s1, adopting a 90# single screw extruder, setting the productivity to be about 100kg/h, extruding and casting the thermoplastic glass fiber modified PP resin sheet with the width of 1100mm and the thickness of 0.35mm, and conveying the sheet between two forming rollers;
s2, carrying out thermoforming on the cast sheet of the thermoplastic resin by a half-hexagonal forming roller with cooling water, wherein the side length of a groove of the forming roller and a convex groove of the forming roller is 4.62mm, and the drawing speed of the corrugated sheet and the linear speed of the forming roller are set to be about 30 m/min;
s3, removing the transverse redundant unformed flash from the corrugated sheet, and recycling the corrugated sheet to an extrusion production line on line after crushing, wherein the distance between the trimming and cutting knives is 1050 mm;
s4, cutting the upper blade and the lower blade into the corrugated sheet from the upper surface and the lower surface respectively, wherein the depth of the hot knife is 3.8mm, the positions of the upper cut and the lower cut are circularly alternated, the upper cut is connected with the lower plane correspondingly, the lower cut is connected with the upper plane correspondingly, and each corrugated array is ensured to be connected end to end; the horizontal distance between the upper blade and the lower blade is 15 mm;
S5, changing each mutually connected corrugated array from horizontal to vertical through mutually interfered folding brush rollers with different rotating speeds, arranging the corrugated arrays in an N-shaped folding way, and forming a tightly arranged honeycomb grid through a crawler belt; the linear speed of the upper end folding brush roller is 90m/min, the linear speed of the lower end folding brush roller is 60m/min, and the linear speed of the crawler belt is 8 m/min;
s6, controlling the crawler belt contact type baking through the oil temperature of each corrugated array in the honeycomb grid, cooling, and bonding and shaping each other to form an integral honeycomb sandwich; the baking temperature is 210 ℃, the pressure is 10MPa, and the plate discharging speed is 8 m/min;
s7, gram weight 1000g/m2Prepreg tape, gram weight 100g/m2The adhesive film is respectively laminated with the honeycomb sandwich of the middle layer by five layers and is baked, cooled and shaped by a crawler-type compound machine; the baking temperature is 220 ℃, the pressure is 10MPa, and the plate discharging speed is 8 m/min;
s8, pressing and sawing to produce the hexagonal honeycomb sandwich composite board with the width of 1000mm and the length of 2400 mm.
EXAMPLE III
A modified PP square honeycomb core and honeycomb sandwich board, square honeycomb core: the aperture is 10mm, the thickness is 20mm, and the gram weight is 1800g/m2The gram weight of the upper and lower epidermis modified PP sheet is 500g/m2The production width is 1000mm, the length is 1000mm, the thickness is 20mm, and the gram weight is 2800g/m 2A honeycomb sandwich panel. The honeycomb sandwich board is widely used for logistics containers, and has the advantages of light weight, moisture resistance, mildew resistance, high compression strength, high bending strength, recyclability, easy forming and turning, and low cost; the preparation method comprises the following steps:
s1, adopting a 90# single screw extruder, setting the productivity to be about 60kg/h, extruding and casting the thermoplastic modified polypropylene resin sheet with the width of 1100mm and the thickness of 0.35mm, and conveying the sheet between two forming rollers;
s2, thermoforming the thermoplastic resin sheet by a half-square forming roller filled with cooling water to obtain a half-square corrugated sheet, wherein the side length of the forming roller groove and the forming roller convex groove is 10mm, and the linear speed is 20 m/min;
s3, removing the transverse redundant unformed flash from the corrugated sheet, and recycling the corrugated sheet to an extrusion production line on line after crushing, wherein the transverse cutter spacing is 1050 mm;
s4, cutting the upper blade and the lower blade into the corrugated sheet from the upper surface and the lower surface respectively, wherein the depth of the hot knife is 4.8mm, the positions of the upper cut and the lower cut are circularly alternated, the upper cut is connected with the lower plane correspondingly, the lower cut is connected with the upper plane correspondingly, and each corrugated array is ensured to be connected end to end; the horizontal distance between the upper blade and the lower blade is 20 mm;
s5, changing each mutually connected corrugated array from horizontal to vertical through mutually interfered folding brush rollers with different rotating speeds, and forming the corrugated arrays into a tightly arranged honeycomb grid through a crawler belt according to N-shaped folding arrangement; the linear speed of the upper end folding brush roller is 80m/min, the linear speed of the lower end folding brush roller is 60m/min, and the linear speed of the crawler belt is 5 m/min;
S6, controlling the contact baking of the crawler belts by the oil temperature of each corrugated array in the honeycomb grid, cooling and bonding the corrugated arrays to form an integral honeycomb sandwich; the baking temperature is 180 ℃, the pressure is 6MPa, and the plate discharging speed is 5 m/min;
s7, gram weight 500g/m2The modified PP sheets are respectively laminated with the middle honeycomb sandwich layer for three layers and are baked, cooled and shaped by a crawler compounding machine; the baking temperature is 200 ℃, the pressure is 6MPa, and the plate discharging speed is 5 m/min;
s8, pressing and sawing to produce the square honeycomb sandwich composite board with the width of 1000mm and the length of 1000 mm.
The corresponding schematic diagram of the change of the square honeycomb sandwich structure is shown in figure 8.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A device capable of continuously producing honeycomb sandwich and sandwich composite board is characterized in that: comprises a feeding mechanism;
the forming roller mechanism is connected with the feeding end of the feeding mechanism at the feeding end and comprises two forming rollers which are oppositely arranged, and a sheet forming space is formed between the two forming rollers;
The cutting mechanism comprises at least one upper blade and at least one lower blade, the upper blade and the lower blade are alternately arranged, the upper blade and the adjacent lower blade are arranged in parallel, and the cutting heights of the upper blade and the lower blade are both adjustable;
the folding mechanism comprises at least two folding brush rollers, and the rotating speeds of the two folding brush rollers are different; and
the baking mechanism comprises a crawler-type compound machine.
2. The apparatus of claim 1, wherein the apparatus is adapted for continuous production of cellular core and core composite panels, and comprises: and forming roller convex grooves and forming roller grooves are arranged on the forming rollers in a staggered manner, and the forming roller convex groove of one forming roller is matched with the forming roller groove corresponding to the other forming roller.
3. The apparatus of claim 2, wherein the apparatus is adapted to continuously produce cellular core and core composite panels, and comprises: the section of the groove of the forming roller is in one of a trapezoid shape, a rectangular shape and a triangular shape.
4. The apparatus according to any one of claims 1 to 3, wherein the apparatus is adapted to continuously produce cellular core and core composite panels, and comprises: the forming roller mechanism with air cooling equipment and horizontal trimming cut-off knife subassembly have been arranged in proper order between the cutting mechanism, horizontal trimming cut-off knife subassembly is including the side cut-off knife that distributes in the left and right sides.
5. The apparatus of claim 4, wherein the apparatus is adapted to continuously produce cellular core and core composite panels, and comprises: the crawler-type compound machine is characterized by further comprising a size cutter positioned at the output end of the crawler-type compound machine.
6. A method for continuously producing honeycomb sandwich and sandwich composite board is characterized in that: the device for continuously producing the honeycomb sandwich and the sandwich composite plate as claimed in any one of claims 1 to 4 is used for extruding the casting sheet, pressing the casting sheet into the corrugated sheet, cutting, N-folding, baking, cooling and shaping the corrugated sheet to form the honeycomb sandwich with the honeycomb net structure, and then laminating and adhering the upper and lower surface skins on the upper and lower end faces of the honeycomb sandwich to form the sandwich composite plate.
7. The method for continuously producing cellular core and core composite board as claimed in claim 6, wherein the method comprises the following steps:
s1, extruding the cast sheet of the thermoplastic resin on line through a feeding mechanism;
s2, receiving the casting sheet by the forming roller mechanism, and pressing the casting sheet into a corrugated sheet by the forming roller;
s3, the corrugated sheet comprises an upper plane, a lower plane and a slope surface which are connected in series, the upper blade edge cuts the upper plane and the slope surface, the lower blade edge cuts the lower plane and the slope surface, and therefore the corrugated sheet is cut into a corrugated array, and the corrugated array is provided with upper cuts and lower cuts which are distributed continuously and alternately up and down;
S4, changing each mutually connected corrugated array from horizontal to vertical through mutually interfered folding brush rollers, and forming the corrugated arrays into a tightly arranged honeycomb grid by a crawler belt according to N-shaped folding arrangement;
s5, baking the honeycomb grids through a crawler-type compound machine to form an integrated honeycomb sandwich;
s6, covering and sticking upper and lower skins on the upper and lower end surfaces of the honeycomb sandwich by a crawler-type compound machine to form a sandwich composite board;
and S7, cutting the sandwich composite board.
8. The method for continuously producing cellular core and core composite board as claimed in claim 7, wherein: in step S2, a cooling water passage or a heating member is provided inside the forming rollers, and the distance between the two forming rollers is adjustable.
9. The method for continuously producing cellular core and core composite board as claimed in claim 7, wherein: between step S2 and step S3, both sides of the corrugated sheet are cut using trim cutters distributed on both left and right sides, respectively, to remove laterally unnecessary burrs.
10. The method for continuously producing cellular core and core composite board as claimed in claim 7, wherein: the upper and lower epidermis includes upper epidermis and lower epidermis, upper and lower epidermis be one of thermoplastic resin sheet, thermoplastic resin coiled material, glass fiber reinforced class sheet, glass fiber reinforced class coiled material, sheet metal and metal coil.
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