CN112537097B - Production method of multi-layer fabric laminated piece - Google Patents
Production method of multi-layer fabric laminated piece Download PDFInfo
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- CN112537097B CN112537097B CN202011134876.7A CN202011134876A CN112537097B CN 112537097 B CN112537097 B CN 112537097B CN 202011134876 A CN202011134876 A CN 202011134876A CN 112537097 B CN112537097 B CN 112537097B
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- 239000004744 fabric Substances 0.000 title claims abstract description 129
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 70
- 238000003466 welding Methods 0.000 claims abstract description 127
- 238000000227 grinding Methods 0.000 claims abstract description 90
- 238000005520 cutting process Methods 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 23
- 238000013461 design Methods 0.000 claims abstract description 19
- 238000003892 spreading Methods 0.000 claims abstract description 16
- 230000007480 spreading Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000010410 dusting Methods 0.000 claims description 38
- 238000010586 diagram Methods 0.000 claims description 27
- 239000000843 powder Substances 0.000 claims description 26
- 238000007689 inspection Methods 0.000 claims description 14
- 238000005485 electric heating Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 66
- 238000012795 verification Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000004513 sizing Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000012942 design verification Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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- 230000008018 melting Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
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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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
- B32B37/0084—Point bonding
-
- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
- B32B2038/045—Slitting
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
Landscapes
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
Abstract
The invention provides a production method of a multilayer fabric laminate, which is used for solving the problems of low production efficiency, unstable quality and high cost of the multilayer fabric laminate in the prior art. The production method comprises the following steps: designing an uncoiling spreading direction, a blanking cloth cutting size, welding spot positions and numbers, a powdering layer number, a powdering direction and a local powdering area according to a laminated structure of the laminated piece and fixing requirements, and outputting a blanking cloth cutting graph, a welding spot graph and a local powdering area graph; and verifying and optimizing design parameters according to the blanking cutting patterns, the welding spot patterns and the local powdering area patterns, and laying production lines according to the optimized blanking cutting patterns, the welding spot patterns and the powdering area patterns, the optimized production process parameters and the production requirements to finish the production of the multi-layer fabric laminated piece. The production line has designability, improves the material utilization rate to the optimal through the front design and the local powdering process, reduces the cost and improves the quality and the production efficiency through optimizing the fixing and cutting parameters of the multi-layer fabric.
Description
Technical Field
The invention belongs to the field of continuous fiber reinforced resin matrix composite material molding processing, and particularly relates to a production method of a multilayer fabric lamination.
Background
The multi-layer fabric laminate is generally used for preparing a continuous fiber reinforced resin matrix composite, and is widely applied to the fields of large structural members, weather-resistant structural members, aerospace and the like due to excellent mechanical properties, chemical corrosion resistance, recycling processability, excellent weight reduction performance and environmental suitability. According to different use environments and use requirements, each layer of fabric jointly forms a laminated piece in different angles and different weaving forms, for example, a certain laminated piece is formed by four continuous fiber fabrics of 0 DEG, 45 DEG, -45 DEG and 90 DEG which are paved in sequence and a sizing agent among the fabrics.
In the prior art, a manual or mechanized method is adopted in the production of the laminated piece to carry out layer-by-layer coverage of the fabrics, a sizing agent is sprayed between the fabric layers to fix the interlayer fibers, and finally the fixed multi-layer fabrics are cut to obtain the required laminated piece. However, the manual layer-by-layer laying production method has long operation time and cannot meet the requirement of mass production; the sizing agent such as spray glue is sprayed, the sizing agent such as spray glue is not uniform under the influence of manual operation, and the quality problems such as poor appearance, performance reduction and the like of the fabric are easily caused; the mechanical automation layering and continuous blanking are carried out, and each lamination piece needs to be subjected to special process setting during production, so that the method is not systematic and inflexible, the process is still immature, the cost is high, the implementation is difficult, and the industrial production and popularization are not facilitated.
Disclosure of Invention
In view of the above-mentioned drawbacks or shortcomings in the prior art, the present invention aims to provide a method for producing a multi-layer fabric laminate, which realizes flexible production of the laminate by arranging a front design link, and ensures sufficient fixation of the fabric and reduces cost by cooperation of local powdering and welding; meanwhile, the design is optimized through an experimental process, the production efficiency of the laminated piece is improved, and the production cost is reduced.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:
The embodiment of the invention provides a production method of a multi-layer fabric laminated piece, which comprises the following steps:
step S1, designing uncoiling spreading and blanking cloth cutting sizes according to the layering structure and the sizes of the laminated pieces, and outputting blanking cloth cutting patterns;
step S2, designing the positions and the number of welding spots according to the blanking cutting pattern and the fixing requirement, and outputting a welding spot diagram;
Step S3, designing the number of dusting layers, the dusting direction and a local dusting area according to the layering structure, the blanking cutting pattern and the welding spot pattern, and outputting a local dusting area pattern;
Step S4, verifying and optimizing design parameters according to the blanking cutting pattern, the welding spot pattern and the local powder scattering area pattern to obtain an optimized blanking cutting pattern, an optimized welding spot pattern, an optimized powder scattering area pattern and optimized production process parameters;
and S5, laying a production line according to the optimized blanking cutting pattern, the optimized welding point pattern, the optimized powdering area pattern, the optimized production process parameters and the production requirements to finish the production of the multi-layer fabric laminated piece.
As a preferred embodiment of the present invention, the step S4 further includes:
step S41, powdering the multi-layer fabric according to the local powdering area diagram;
Step S42, feeding and uncoiling the spreading material according to the layering structure and the blanking cutting pattern, and layering on the premise of ensuring the type, angle and powdering surface of the fabric to be correct;
S43, drawing the uncoiled fabric after layering to a welding area, and welding the local powdering area of the multi-layer fabric according to the welding spot position;
Step S44, transferring the welded multi-layer fabric, testing the firmness between the local powdering area and the paving layer in the transferring process, adjusting the welding point diagram and the local powdering area diagram when the firmness cannot meet the requirement, increasing the welding point density and the safety margin, adjusting the local powdering area, and returning to the step S41; when the firmness meets the requirement, the step S45 is carried out;
Step S45, transferring the welded multi-layer fabric to a cutting area, and cutting according to a blanking cutting pattern;
step S46, inspecting the cut multi-layer fabric laminated piece, simultaneously, performing application inspection on the multi-layer fabric laminated piece, and when the inspection result does not meet the inspection standard, adjusting the size, the welding spot position and number, the dusting layer number, the dusting direction and the local dusting area of the blanking cloth again, and returning to the step S41; and outputting an optimized blanking cutting pattern, an optimized welding point pattern and an optimized local dusting area pattern when the inspection standard is met.
As a preferred embodiment of the present invention, the multi-layer fabric is dusted in step S41, which is on-line or off-line, and the local area and the amount of the powder are checked during the process of the powder to ensure that the amount and the position of the powder are in the acceptable range.
As a preferred embodiment of the present invention, the welding is performed using ultrasonic welding or electric heating rod welding, with the welding temperature, welding pressure, and welding time being determined according to the kind of dusting.
As a preferred embodiment of the invention, the cutting is performed manually or automatically.
As a preferred embodiment of the invention, the tests include size, appearance, ply sequence, fiber orientation, spot weld location, and spot weld firmness tests.
As a preferred embodiment of the present invention, the ply structure comprises a fabric type, a ply number and a sequence; when uncoiling and spreading are performed, the widths of the multi-layer fabrics are the same, the length of the fabric coil has complete cutting cycle number, and edges in the width direction are aligned when feeding is performed; the blanking fabric cutting size is the unfolding size of the laminated piece and the cutting allowance is added.
As a preferred embodiment of the present invention, the molding cutting allowance is 15-30 mm.
As a preferred embodiment of the present invention, the fixing requirement in step S2 ensures that the fixed positional relationship of the multi-layered fabric is not affected when the laminate is transferred during the production process, thereby ensuring the continuity and stability of the automated production process.
As a preferred embodiment of the present invention, the powdering in the step S3 is local powdering; the local powdering area covers all welding spot areas and leaves a safety margin according to the precision of powdering equipment; when a plurality of products are produced simultaneously, the local powdering area is designed to be stacked and nested according to the welding spot position diagrams of the products, so that the welding spots of all the products are enabled to be powered and the safety margin is reserved in the powdering area.
The invention has the following beneficial effects:
According to the multilayer fabric laminate production method provided by the embodiment of the invention, firstly, uncoiling spreading materials and blanking cloth cutting sizes are designed according to the laminate layer structure of the laminate in the design stage, a blanking cloth cutting diagram is output, welding spot positions and numbers are designed according to the blanking cloth cutting diagram and fixing requirements, welding spot diagrams are output, and then, according to the laminate layer structure, the blanking cloth cutting diagram and the welding spot diagrams, local powdering is combined, the powdering layer number, powdering direction and local powdering area are designed, and a local powdering area diagram is output; secondly, verifying and optimizing design parameters according to the blanking cutting pattern, the welding spot pattern and the local powder scattering area pattern in a verification stage to obtain an optimized blanking cutting pattern, an optimized welding spot pattern, an optimized powder scattering area pattern and optimized production process parameters; and finally, in the production implementation stage, laying a production line according to the optimized blanking cutting pattern, the optimized welding point pattern, the optimized powdering area pattern, the optimized production process parameters and production requirements to finish the production of the multi-layer fabric laminated piece. When the method is applied to an actual production line, the production line has designability, and meanwhile, the multi-layer fabric fixing and cutting modes related to the product have designability; the production method of the multilayer fabric laminated piece continuously develops, verifies and optimizes the improvement to realize the optimal cost and efficiency in the design, verifies and implements the stages, simultaneously, the production efficiency and the material utilization rate can be improved to be optimal through the manual, semiautomatic and automatic selection of the layout of the production line planning through the front-end design, and simultaneously, the mutual support verification and the continuous optimization of each link from the design verification to the implementation stage are matched with the local powdering process, so that the low cost of the multilayer fabric fixation and cutting is realized.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of a method of producing a multilayer fabric laminate according to an embodiment of the present invention;
FIG. 2 is an exemplary view of a multilayer fabric in accordance with an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a multi-layer fabric spread and dusting according to an embodiment of the present invention;
FIG. 4 is an illustration of a blanking cloth cutting diagram in an embodiment of the present invention;
FIG. 5 is an illustration of a diagram of a solder joint in an embodiment of the present invention;
FIG. 6 is an exemplary view of a localized dusting region in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of the ultrasonic welding principle in an embodiment of the present invention;
Fig. 8 is a schematic diagram of a heating welding principle of an electric heating rod in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The embodiment of the invention provides a production method of a multi-layer fabric laminated piece, which comprises the steps of dividing the production process of the multi-layer fabric laminated piece into a design stage, a verification stage and an implementation stage, and outputting a blanking cutting pattern, a welding spot pattern, a local powder scattering area pattern, the number of powder scattering layers and the powder scattering direction in the design stage; the verification stage verifies the operability and correctness of the output result of the design stage, and meanwhile, the verification stage performs leak detection and deficiency repair on the design stage and performs optimization improvement; and (3) executing the output result after the design stage optimization in the implementation stage, carrying out production layout, planning and distributing production lines according to production requirements, and completing production.
As shown in fig. 1, the method for producing the multi-layer fabric laminate comprises the following steps:
step S1, designing uncoiling spreading and blanking cloth cutting sizes according to the layering structure and the sizes of the laminated pieces, and outputting blanking cloth cutting patterns;
step S2, designing the positions and the number of welding spots according to the blanking cutting pattern and the fixing requirement, and outputting a welding spot diagram;
Step S3, designing the number of dusting layers, the dusting direction and a local dusting area according to the layering structure, the blanking cutting pattern and the welding spot pattern, and outputting a local dusting area pattern;
Step S4, verifying and optimizing design parameters according to the blanking cutting pattern, the welding spot pattern and the local powder scattering area pattern to obtain an optimized blanking cutting pattern, an optimized welding spot pattern, an optimized powder scattering area pattern and optimized production process parameters;
and S5, laying a production line according to the optimized blanking cutting pattern, the optimized welding point pattern, the optimized powdering area pattern, the optimized production process parameters and the production requirements to finish the production of the multi-layer fabric laminated piece.
As described above, in step S1, the ply structure includes the fabric type, the ply number and the order. The fabric types include fabric materials, grammage and size. When the material is uncoiled and spread, the widths of the multi-layer fabrics are the same, the length of the fabric coil has complete cutting cycle number, and the edges in the width direction are aligned when the material is arranged. Taking a seven-layer fabric laminated piece as an example, as shown in fig. 2, the uncoiling and spreading directions of the seven-layer fabric are ensured to be 0 degree, 90 degrees, 45 degrees, 90 degrees, 0 degree unidirectional fabric fiber directions, powder scattering surfaces (upward) and the appearance surface of the laminated piece meet the product requirements (fiber textures); while ensuring the width direction edge alignment. Table 1 shows the lay-up of a product of 1180mm by 360 mm.
TABLE 1
As shown in Table 1, the widths of the seven layers of fabrics are 2.54m, and the uncoiling and spreading directions are carried out according to the requirements; the first to sixth layers of fabrics are enabled to be dusted and the dusted surface is enabled to be upward, the seventh layer of fabrics are enabled not to be dusted, the fiber angle and the appearance surface meet the design requirement of the product, the materials and the specifications of the fabrics are selected according to the mechanical property requirement of the product, and the materials and the specifications are respectively and sequentially selected as SA-KU-1-300, SA-KU-4-150, SA-KU-2-150, SA-KU-3-300, SA-KU-2-150, SA-KU-4-150 and KU-1-300.
The blanking fabric cutting size is the addition type cutting allowance of the unfolding size of the laminated piece, so that the forming cutting allowance is reserved in the width direction and the length direction of each roll on the premise that the edges of the width direction are aligned when each roll is unfolded. Preferably, the cutting allowance is 15-30 mm. As shown in fig. 4, for the illustration of the blanking fabric cutting, the spreading size of the laminated piece is 1180mm×360mm, and the safety margin is 30mm, then based on the fabric width of 2540mm, the length of the long sides of the two laminated pieces plus the safety margin (forming cutting margin) is set in the width direction, namely (1180+30) ×2, and the leftover materials in the production process are left at two ends of the fabric in the width direction of 60mm (including the process margin which is generally 10-20mm in the width direction because of the alignment difficulty of the multi-layer fabric); in the fabric-spreading direction, the cut width was determined to be 360+30=390 mm from the laminate width of 360 mm. In the spreading process, a safety margin of 10mm or 20mm is reserved at the edge in the length direction of the roll according to the situation of the rolled edge of the material, the transfer clamping of a blanking cutting device and the like.
And in the step S2, the welding spots are designed according to the fixed requirement. The fixing requirements are related to the manner in which the laminate is transferred during production, such as manual transfer, robotic gripper transfer. The fixing requirement ensures that the fixing position relationship of the multi-layer fabric is not influenced when the laminated piece is transferred in the production process, thereby ensuring the continuity and stability of the automatic production process.
Preferably, the welding spot positions are positioned at the edges of the product and avoid the hand grip needling system as much as possible, the welding spot distance is controlled to be 200-500 mm, the positions and the number of the welding spots ensure firm welding spots, and each layer of fabric of the laminated piece is firmly fixed and does not delaminate in the transferring and processing processes. As shown in FIG. 5, the welding spot diagram is an illustration of welding spots, according to the blanking cutting diagram with the size of 1210mm multiplied by 390mm and the fixing requirement, the welding spots are designed to be one at each of four corners of the laminated piece and 130mm positions at two sides of the midpoint of the long side, eight welding spots are symmetrically distributed, the radius of each welding spot is 15mm, and the outer side edge of each welding spot is 15mm away from the edge of the cutting diagram.
As described above, in step S3, the number of dusting layers is related to the layering structure, and dusting is performed on one of the layers in contact with each other, the number of dusting layers being one less than the number of layering layers. For example, when the number of layering layers is seven, the number of dusting layers is six. As shown in fig. 2, 3 and table 1, the product was layered with 7 layers, the number of dusting layers being 1, 2, 3, 4, 5, 6, and no dusting of layer 7. The powdering direction is the non-appearance surface of the layering.
In this step, local powdering is used, and therefore, a local powdering area is designed, and a local powdering area map is output. The local dusting area covers all the welding spot areas and leaves a safety margin according to the precision of the dusting equipment. Preferably, the safety margin is +15- +25mm. Preferably, when a plurality of products are simultaneously produced, the local powdering area is designed to be stacked and nested according to the welding spot position diagram of each product, so that welding spots of all the products are enabled to be powered and the powdering area is enabled to leave a safety margin, for example, a safety margin of +15 to +25mm. Through reasonable stacking of the powdering areas of a plurality of products, the powdering areas are correspondingly enlarged, and the local powdering tool is convenient to install and position at one time. The local powdering replaces full powdering, so that the consumption of sizing agent powder is saved, and the fixity of the laminated piece is ensured. The powdering is carried out in the usual sense of full-face (full width) powdering subject to powdering equipment and processes, whereas local powdering can be achieved by retrofitting the equipment with the aid of local powdering tools.
Fig. 6 is an exemplary view of the localized dusting region. As shown in fig. 6, for the local powdering area of the single-layer fabric (the powdering area of each layer of fabric is the same), the welding spots are connected in a certain direction (for example, the winding direction) according to the principle of the powdering equipment, and the connecting direction is designed as the powdering area to cover the welding spots and leave a corresponding safety margin, for example, 15mm or 20mm outside the edges of the welding spots.
As described above, step S4 specifically includes the steps of:
And S41, powdering the multi-layer fabric according to the local powdering area diagram. In the step, the powdering can be performed on line, namely, powdering is performed in the weaving process; or offline powdering, namely powdering the coiled and woven fabric, and winding the fabric for standby after powdering. And in the powdering process, checking the position and the powdering quantity of the local powdering area to ensure that the powdering quantity and the powdering position are in a qualified range.
And S42, feeding and uncoiling the spreading material according to the layering structure and the blanking cutting pattern, and layering on the premise of ensuring the type, angle and powdering surface of the fabric. In the step, the cloth rolls are reasonably placed according to the layout (horizontal or vertical) of the loading shaft of the loading end during loading, so that the type of each layer of fabric and the powder scattering surface are ensured to be correct, the cloth rolls are paved after uncoiling and spreading, and the semi-automatic paving or automatic paving by using automatic equipment can be realized.
And S43, drawing the uncoiled fabric after layering to a welding area, and welding the local powdering area of the multi-layer fabric according to the welding spot position. The welding can be ultrasonic welding or electric heating rod welding. In the step, the welding process can be semi-automated or automated by ensuring the welding temperature, welding pressure, welding time and other technological parameters during welding. The welding temperature, the welding pressure and the welding time are determined according to the type of scattered sizing agent powder (Binder powder) and the fixing requirement of the laminated piece, for example, the melting point of the epoxy resin type Binder powder of a certain model is 160 ℃, the welding temperature is more than or equal to 160 ℃, and the welding pressure (in bar) and the time (in s) are required to be adjusted according to actual conditions.
In the step, the fabric welding mode is classified into ultrasonic welding or electric heating welding. The ultrasonic welding is converted into heat energy through ultrasonic energy to melt the Binder powder. As shown in fig. 7, the welding head is mounted on a robot for use with a welding robot, and welds the dusting fabric on the welding platform under the control of the welding robot control system. The welding position and the welding sequence are adjusted through the adjustment of the robot track, and meanwhile, the control system integrally controls welding process parameters. And the electric heating welding adopts electric energy to be converted into heat energy to melt Binder powder for welding. As shown in fig. 8, after the fabric is drawn to the welding platform, the electric heating control system controls the electric heating device to heat the fabric, and preferably, the electric heating device is matched with an electric heating rod; meanwhile, the electric heating control system controls the fabric lifting device of the welding platform to control the vertical distance between the fabric and the welding platform, and the electric heating control system is matched with the electric heating device to adjust the fabric welding parameters including welding temperature, welding pressure and the like. Through the welding process, adhesion between the layers of the multi-layer fabric is realized.
Step S44, transferring the welded multi-layer fabric, testing the firmness between the local powdering area and the paving layer in the transferring process, adjusting a welding point diagram and the local powdering area diagram when the firmness cannot meet the requirement, increasing the welding point density and the safety margin, optimizing the local powdering area, and returning to the step S41; when the firmness satisfies the requirement, the process advances to step S45.
In this step, the firmness requirements are determined according to the state of the multilayer fabric during the transfer process. The firmness test standard is usually determined from empirical values in actual production. For example, the multi-layer fabric weld locations are free of delamination and relative displacement at edge tangents.
And S45, transferring the welded multi-layer fabric to a cutting area, and cutting according to a blanking cutting pattern. And the cutting is performed manually or automatically. Wherein, the manual cutting firstly makes a blanking template according to a blanking cutting pattern; the automatic cutting is firstly carried out by inputting a blanking cutting pattern, and the cloth cutting machine carries out automatic cutting and blanking according to the cutting pattern.
Step S46, checking the cut multi-layer fabric laminate, including checking the size, appearance, layering sequence, fiber direction, welding spot position and welding spot firmness; meanwhile, application inspection is carried out on the multi-layer fabric laminated piece, and when the inspection result does not meet the inspection standard, the size, the welding spot position and number, the powder spraying layer number, the powder spraying direction and the local powder spraying area of the blanking cloth are adjusted again, and the step S41 is returned; and outputting an optimized blanking cutting pattern, an optimized welding point pattern and an optimized local dusting area pattern when the inspection standard is met.
In this step, the test criteria are usually determined in actual production based on empirical values. For example, whether the cut size safety margin meets the application requirements, whether the multi-layer fabric has delamination or interlaminar displacement during transportation, whether the product performance in the application field is affected after application, and the like.
In step S5, the production line is planned and laid out according to the capacity requirement, and the process in the design stage and the verification stage can be continuously improved and optimized in the production process. The production efficiency and the material utilization rate can be improved to be optimal through the manual, semi-automatic and automatic selection of the front design and the production line planning layout, and meanwhile, the mutual support verification and optimization of each link from the design verification to the implementation stage are matched with the local powdering process, so that the low-cost production of the multi-layer fabric laminated piece is realized.
The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present invention (but not limited to) having similar functions are replaced with each other.
Claims (10)
1. A method of producing a multilayer fabric laminate, the method comprising the steps of:
step S1, designing uncoiling spreading and blanking cloth cutting sizes according to the layering structure and the sizes of the laminated pieces, and outputting blanking cloth cutting patterns;
step S2, designing the positions and the number of welding spots according to the blanking cutting pattern and the fixing requirement, and outputting a welding spot diagram;
Step S3, designing the number of dusting layers, the dusting direction and a local dusting area according to the layering structure, the blanking cutting pattern and the welding spot pattern, and outputting a local dusting area pattern;
the local dusting area is a connecting line in the rolling direction of welding points, the connecting line direction is designed to be a dusting area, and the dusting area covers all welding points and leaves corresponding safety allowance;
Step S4, verifying and optimizing design parameters according to the blanking cutting graph, the welding spot graph and the local powder scattering area graph to obtain an optimized blanking cutting graph, an optimized welding spot graph, an optimized powder scattering area graph and optimized production process parameters, and welding the local powder scattering area of the multilayer fabric according to the welding spot position;
and S5, laying a production line according to the optimized blanking cutting pattern, the optimized welding point pattern, the optimized powdering area pattern, the optimized production process parameters and the production requirements to finish the production of the multi-layer fabric laminated piece.
2. The method of producing a multilayer fabric laminate according to claim 1, characterized in that said step S4 further comprises:
step S41, powdering the multi-layer fabric according to the local powdering area diagram;
Step S42, feeding and uncoiling the spreading material according to the layering structure and the blanking cutting pattern, and layering on the premise of ensuring the type, angle and powdering surface of the fabric to be correct;
S43, drawing the uncoiled fabric after layering to a welding area, and welding the local powdering area of the multi-layer fabric according to the welding spot position;
step S44, transferring the welded multi-layer fabric, testing the firmness between the local powdering area and the paving layer in the transferring process, adjusting a welding point diagram and a local powdering area diagram when the firmness cannot meet the requirement, increasing the welding point density and the safety margin, adjusting the local powdering area, and returning to the step S41;
Step S45, transferring the welded multi-layer fabric to a cutting area, and cutting according to a blanking cutting pattern;
step S46, inspecting the cut multi-layer fabric laminated piece, simultaneously, performing application inspection on the multi-layer fabric laminated piece, and when the inspection result does not meet the inspection standard, adjusting the size, the welding spot position and number, the dusting layer number, the dusting direction and the local dusting area of the blanking cloth again, and returning to the step S41; and outputting an optimized blanking cutting pattern, an optimized welding point pattern and an optimized local dusting area pattern when the inspection standard is met.
3. The method according to claim 2, wherein the step S41 of powdering the multi-layered fabric is on-line powdering or off-line powdering, and the local powdering area position and the powdering amount are checked during the powdering process to ensure that the powdering amount and the powdering position are within acceptable ranges.
4. The method of producing a multi-layered fabric laminate according to claim 2, wherein the welding is performed by ultrasonic welding or electric heating rod welding, and the welding temperature, the welding pressure, and the welding time are determined according to the kind of dusting.
5. The method of claim 2, wherein the cutting is performed manually or automatically.
6. The method of claim 2, wherein the inspection includes dimensional, appearance, layering sequence, fiber orientation, weld location, and weld firmness inspection.
7. The method of producing a multilayer fabric laminate according to any one of claims 1 to 6, wherein the lay-up structure comprises a fabric type, a number of lay-up layers and a sequence; when uncoiling and spreading are performed, the widths of the multi-layer fabrics are the same, the winding length of the fabrics has complete cutting cycle number, and edges in the width direction are aligned when the fabrics are arranged; the blanking fabric cutting size is the unfolding size of the laminated piece and the cutting allowance is added.
8. The method of claim 7, wherein the forming cut margin is 15 to 30mm.
9. The method according to any one of claims 1 to 6, wherein the fixing requirements in step S2 ensure that the fixing positional relationship of the multilayer fabric is not affected when the laminate is transferred during the production process, thereby ensuring the continuity and stability of the automated production process.
10. The method of producing a multilayer fabric laminate according to any one of claims 1 to 6, wherein the powdering in step S3 is performed by local powdering; the local powdering area covers all welding spot areas and leaves a safety margin according to the precision of powdering equipment; when a plurality of products are produced simultaneously, the local powdering area is designed to be stacked and nested according to the welding spot position diagrams of the products, so that the welding spots of all the products are enabled to be powered and the safety margin is reserved in the powdering area.
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| CN101143038A (en) * | 2007-09-11 | 2008-03-19 | 东华大学 | Disposable powder point coating nonwoven shoe cover material and its manufacturing method |
| CN108673996A (en) * | 2018-07-17 | 2018-10-19 | 宁波伯骏智能科技有限公司 | A kind of fabric enhancing composite board production equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101143038A (en) * | 2007-09-11 | 2008-03-19 | 东华大学 | Disposable powder point coating nonwoven shoe cover material and its manufacturing method |
| CN108673996A (en) * | 2018-07-17 | 2018-10-19 | 宁波伯骏智能科技有限公司 | A kind of fabric enhancing composite board production equipment and method |
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