Method and device for cutting one-piece front part of traditional clothes based on parametric modeling

Abstract

The invention discloses a parametric modeling-based traditional garment one-piece type front fly cutting method and device, the cutting device comprises a rack, a numerical control moving part, a cutting execution part and a conveying part, the numerical control moving part is arranged on the rack and reciprocates along a first direction, and the cutting execution part is arranged on the rack and reciprocates along a second direction; the numerical control moving part is used for displacing the cutting execution part arranged on the numerical control moving part in the three-dimensional direction, the cutting execution part is used for cutting the fabric conveyed by the conveying part and carrying out fusion overlock on the edge of the cut fabric, and a fabric mechanical model is established based on finite element analysis through human body model construction to optimize the boundary form of a cutting piece; cutting piece contours are output, then cutting piece segmentation and path planning are conducted, and cutting is achieved through two-dimensional cutting piece unfolding and typesetting optimization and execution of a numerical control cutting device; according to the method, parametric modeling is matched with three-dimensional human body data, accurate cutting piece generation of a traditional front fly structure is achieved, fabric waste is reduced, the cutting efficiency is improved, and the cutting piece form is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing manufacturing, and particularly to a one-piece front-opening cutting method and device for traditional clothing based on parametric modeling. Background Art

[0002] Traditional Hanfu front-opening structures mostly adopt the flat cutting method, relying on manual experience to complete the cutting and sewing of pieces. There are problems such as high fabric waste rate, cutting accuracy limited by manual operation, and inability to accurately fit the three-dimensional human body shape. In the prior art, some improved methods attempt to reduce fabric consumption by piecewise cutting (such as dividing the front piece, back piece, and sleeve piece), but still lack the three-dimensional modeling support based on human parameters, and it is difficult to achieve automatic optimization and accurate adaptation of the piece structure. Traditional one-piece front-opening cutting relies on manual measurement and empirical formulas, resulting in problems such as low pattern standardization degree and high material waste rate. Existing parametric clothing modeling technologies mostly target modern clothing and lack a quantitative modeling system for the structural characteristics of traditional clothing, such as the curve of the curved front and the amount of gathering under the armpit. Although three-dimensional human scanning technology has been popularized, it has not been linked with the intangible cultural heritage clothing technology database, and it is impossible to achieve intelligent adaptation of traditional patterns and body shapes. Summary of the Invention

[0003] The purpose of the present invention is to provide a one-piece front-opening cutting method and device for traditional clothing based on parametric modeling to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention is realized by the following technical means:

[0005] A one-piece front-opening cutting method for traditional clothing based on parametric modeling includes the following steps:

[0006] Step 1: Construct a parametric human model by three-dimensional scanning or inputting key human body dimension parameters, and generate a three-dimensional clothing surface in combination with the structural characteristics of the traditional front-opening;

[0007] Step 2: Use a mechanical energy model to simulate the natural hanging state of the fabric after fitting the human body, and optimize the boundary shape of the cutting piece;

[0008] Step 3: Based on the parametric model, automatically mark the cutting points in the three-dimensional surface, and generate the cutting lines for the front piece, back piece, and sleeve piece to ensure that the cutting piece division conforms to the structural characteristics of the traditional one-piece structure;

[0009] Step 4: Unfold the three-dimensional surface into two-dimensional cutting pieces, and optimize the cutting piece layout through an algorithm to reduce fabric waste;

[0010] Step 5: Through a cutting device, control the movement of the cutting knife according to the cutting piece path planning, and at the same time combine a high-temperature contact head to perform edge locking treatment on the cutting edge to avoid fabric fraying.

[0011] Furthermore, the traditional one-piece front-opening cutting method for clothing includes the following steps:

[0012] Step 1: Human body model construction; Obtain point cloud data through a three-dimensional human body scanning device, or manually input key dimension parameters, generate a parametric human body model through the B-spline surface algorithm, embed the traditional front-opening structural features in the model, and adjust the curvature of the front and back pieces through non-uniform rational B-spline surfaces to ensure fitting with the human body surface;

[0013] Step 2: Establish a fabric mechanical model based on finite element analysis, simulate the deformation state of the fabric under the action of gravity and tension, optimize the boundary shape of the cut piece by minimizing the system energy, adjust the model parameters according to the physical properties of the fabric, and output the cut piece contour that fits the human body and conforms to the natural draping effect of the traditional front-opening;

[0014] Step 3: Cut piece segmentation and path planning; On the three-dimensional clothing surface, based on the geometric features of the parametric human body model, automatically locate the dividing points of the armhole line. The arc length ratio of the dividing point on the front armhole line to the underarm point is 2:1, and the same applies to the rear armhole line, ensuring that the cut piece segmentation conforms to the traditional one-piece structural features. Connect the dividing points through cubic Bezier curves to generate the dividing lines of the front piece, rear piece, and sleeve piece, while retaining the integrated features of the raglan sleeve structure;

[0015] Step 4: Two-dimensional cut piece unfolding and layout optimization; Use conformal mapping technology to unfold the three-dimensional surface into two-dimensional cut pieces, reduce the stretching deformation error, optimize the cut piece layout based on the genetic algorithm, and optimize the cut piece layout in combination with the fabric width and texture direction;

[0016] Step 5: Execution by the numerical control cutting device; Generate G-code according to the two-dimensional cut piece contour, control the movement trajectory of the cutting tool of the numerical control cutting bed, integrate a high-temperature contact head behind the cutting tool head, and perform instantaneous hot pressing treatment on the cut piece edge to achieve seamless edge locking.

[0017] A cutting device includes a machine frame, a numerical control moving component, a cutting execution component, and a conveying component. The numerical control moving component is installed on the machine frame and reciprocates along the first direction. The numerical control moving component is used to displace the cutting execution component installed thereon in three dimensions. The cutting execution component cuts the fabric conveyed by the conveying component and performs melting edge locking on the edge of the cut fabric.

[0018] Furthermore, the numerical control moving component includes a first-direction moving unit that cooperates with the machine frame. A second moving unit that moves along the second direction is provided on the first-direction moving unit. An auxiliary lifting unit is cooperatively connected to the second moving unit. The auxiliary lifting unit is equipped with a first-direction driving motor through a connecting seat. A displacement adjusting unit that drives the cutting execution component to move in the first direction and the third direction is installed at the end of the connecting seat;

[0019] Specifically, the first-direction moving unit includes two sets of first slider rails that are distributed along the first direction and are cooperatively installed on the frame. The tops of the two first slider rails are cooperatively connected with a moving base that extends along the second direction. A driving plate is installed on the lower surface of the moving base. A first driving motor that is distributed along the second direction is installed on the driving plate. The first driving motor is connected to a first gear at its end and is in transmission connection with a first rack installed on the frame. Thus, under the driving condition of the first driving motor, through the transmission cooperation of the first gear and the first rack, the moving base cooperates with the first slider rails and moves in the first direction, thereby driving the components installed on the moving base to move in the first direction.

[0020] Specifically, the second moving unit includes two sets of second slider rails that are distributed along the second direction and are cooperatively installed on the top of the moving base. The tops of the two second slider rails are cooperatively connected with a moving plate. A second driving motor that is arranged along the third direction is installed at one end of the moving plate. The output end of the second driving motor is connected to a second gear. The second gear is in transmission cooperation with a second rack that is installed on the moving base along the second direction. Through the transmission output of the second driving motor, the moving plate is enabled to move along the second direction on the two second slider rails.

[0021] Specifically, the auxiliary lifting unit is used for double-redundancy displacement protection of the cutting execution component, and can drive the cutting execution component to move in the first direction and the third direction. The auxiliary lifting unit includes two sets of third slider rails that are distributed along the first direction and are cooperatively installed on the moving plate. The tops of the two third slider rails are cooperatively installed on a lifting component seat. A lifting cylinder for driving a connecting seat to perform displacement in the third direction is installed in the lifting component seat. A pushing cylinder that extends and is connected to the outside of the lifting component seat along the first direction is provided. The pushing cylinder is installed on the top of the moving plate, and the telescopic movement of the pushing cylinder drives the lifting component seat to perform displacement in the first direction, and the lifting cylinder arranged in the lifting component seat drives the connecting seat to perform displacement in the third direction, and cooperates with the displacement adjustment unit to realize double displacement adjustment, and can realize double-redundancy displacement protection to ensure the orderly progress of fabric cutting.

[0022] Specifically, the displacement adjustment unit includes a fixing plate installed at the end of the connecting seat. On the other side of the fixing plate, a displacement cylinder seat that is driven to perform displacement in the first direction by a first displacement component is cooperatively provided. On the side of the displacement cylinder seat, a displacement mounting plate that is driven to perform displacement in the third direction by a second displacement component is cooperatively provided. A cutting execution component is cooperatively installed on the displacement mounting plate.

[0023] Further, the cutting execution component includes a rotary cutting member and a edge-locking member mounted on the displacement mounting plate. The rotary cutting member includes a cutting linear motor mounted on the displacement mounting plate. The output end of the cutting linear motor is snap-connected with a modular blade and a high-temperature contact head. The edge-locking member includes a heating element mounted on one side of the cutting linear motor. The heating element transfers heat to the edge of the blade and the high-temperature contact head through a copper heat conduction pipe. A ceramic heating element can also be arranged inside the high-temperature contact head, which is connected to the temperature control module to achieve PID regulation.

[0024] Further, a pneumatic pressing component is also included. The pneumatic pressing component is arranged on the conveyor belt of the conveying component and is used to fix the fabric and eliminate the deformation during the cutting process. Specifically, a vacuum adsorption element and an electromagnetic pressing plate can be used in cooperation. The vacuum adsorption element and the electromagnetic pressing plate are conventional components in the field and will not be described in this invention.

[0025] Further, a control component is also included. The control component includes a control cabinet. A numerical control unit is arranged inside the control cabinet. The numerical control unit includes an industrial PC and a motion control card, which can parse the cutting path data in real time and generate G-code instructions. A touch screen, an emergency stop button, an input button, etc. are arranged on the outer surface of the control cabinet, which support parameter input and status monitoring.

[0026] Further, it also includes a visual detection component, which includes a first visual displacement unit, a second visual displacement unit, and a visual unit. The first visual displacement unit includes a first visual fixing plate. At the top of the first visual fixing plate, two groups of fourth slide rails distributed along the first direction are fitted. At the center position of the upper surface of the first visual fixing plate, a bearing seat is installed. The bearing seat is threadedly connected to a threaded rod that is cooperatively connected to a first-direction driving motor. By driving the threaded rod through the first-direction driving motor, the first visual fixing plate is driven to reciprocate in the first direction. The second visual displacement unit includes two groups of fifth slide rails distributed along the second direction and installed on the lower surface of the first visual fixing plate. The lower surfaces of the two fifth slide rails are cooperatively connected to a second visual fixing plate. The upper surface of the second visual fixing plate is connected to a visual displacement pushing cylinder installed on the lower surface of the first visual fixing plate and distributed along the second direction through a fixed cylinder seat. By the telescopic movement of the visual displacement pushing cylinder, the second visual fixing plate is pushed, so as to drive the visual unit installed on the lower surface of the second visual fixing plate to move in the second direction. The visual unit includes a number of uniformly distributed light sources and industrial cameras installed on the lower surface of the second visual fixing plate. By pre-collecting images of the fabric to be cut, it is possible to pre-generate a reference path for the actual cut piece boundary and the parametric model through an algorithm, effectively improving the cutting efficiency. It cooperates with the image acquisition unit arranged above the cutting execution component to perform real-time error correction and deviation correction, improve the fabric utilization rate, effectively reduce the single-piece cutting cycle, and be able to adapt to the texture recognition of various fabric materials (silk, cotton and linen, chemical fiber) and meet the cutting requirements of the complex curves of traditional large fronts.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] Through the adaptation of parametric modeling and three-dimensional human body data, the present invention realizes the accurate generation of cut pieces for the traditional large front structure, optimizes the cut piece segmentation path and layout algorithm, reduces fabric waste by 15%-20%, improves the cutting efficiency and the qualified rate of edge treatment >99%, ensures that the conformity rate of the cut piece shape ≥98%, and comprehensively realizes the digital upgrade of traditional processes and the improvement of production quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an axonometric structural schematic diagram of the product in the embodiment of the present invention;

[0030] Figure 2 It is a front view structural schematic diagram of the product in the embodiment of the present invention;

[0031] Figure 3 It is a partial structural schematic diagram of the product in the embodiment of the present invention;

[0032] Figure 4 It is a partial structural schematic diagram of the product in the embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of a partial structure of the product according to an embodiment of the present invention;

[0034] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of the structure of part A;

[0035] Figure 7 This is a schematic diagram of a partial structure of the product according to an embodiment of the present invention;

[0036] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of the structure of part B;

[0037] Figure 9 This is a schematic diagram of a partial structure of the product according to an embodiment of the present invention;

[0038] Figure 10 For the present invention Figure 9 An enlarged schematic diagram of the structure of part C;

[0039] Figure 11 This is a schematic diagram of a partial structure of the product according to an embodiment of the present invention;

[0040] Figure 12 This is a schematic diagram of a partial structure of the product according to an embodiment of the present invention. Detailed implementation manners

[0041] Hereinafter, embodiments of the technical solutions of the present application will be described in detail with reference to the accompanying drawings. The following embodiments and the accompanying drawings are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application. Only the parts related to the technical solutions of the present application are schematically shown in the accompanying drawings, and they do not represent the actual structure of the product.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the term "plural" means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0044] As used herein, the mention of "embodiments" means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0048] In this embodiment, a traditional one-piece front-opening three-dimensional cutting method for clothing based on parametric modeling includes the following steps:

[0049] Step 1: Construct a parametric human body model by three-dimensional scanning or inputting key human body dimension parameters, and generate a three-dimensional clothing surface in combination with the structural characteristics of the traditional front-opening.

[0050] Step 2: Use a mechanical energy model to simulate the natural hanging state of the fabric after fitting the human body, and optimize the boundary shape of the cut piece.

[0051] Step 3: Based on the parametric model, automatically label the segmentation points on the three-dimensional surface, generate the segmentation lines for the front piece, back piece, and sleeve piece, and ensure that the cut piece segmentation conforms to the characteristics of the traditional one-piece structure;

[0052] Step 4: Unfold the three-dimensional surface into two-dimensional cut pieces, optimize the cut piece layout through an algorithm, and reduce fabric waste;

[0053] Step 5: Through the cutting device, control the movement of the cutting knife according to the cut piece path planning, and at the same time combine the high-temperature contact head 313 to perform edge locking treatment on the cutting edge to avoid fabric fraying.

[0054] In the above technical solution of the present invention, through the dynamic adaptation of parametric three-dimensional modeling and human body data, the accurate surface reconstruction of the traditional front-opening structure is realized. It can combine fabric mechanics simulation and optimize the cut piece shape, making the cut piece segmentation error less than 0.5 mm. Moreover, intelligent layout algorithms such as the heuristic nesting algorithm and the discrete particle swarm optimization algorithm are adopted, which improves the fabric utilization rate by 15%-20%. It can integrate a numerical control cutting device to achieve high-speed cutting at 5 m / min, and the synchronous high-temperature edge locking process increases the edge tensile strength by more than 30%.

[0055] In one or more possible embodiments of the present invention, the traditional one-piece front-opening cutting method for clothing includes the following steps:

[0056] Step 1: Human body model construction; Obtain point cloud data through a three-dimensional human body scanning device, or manually input key dimension parameters, generate a parametric human body model through the B-spline surface algorithm, embed the traditional front-opening structure characteristics in the model, and adjust the curvature of the front and back pieces through non-uniform rational B-spline surfaces to ensure fitting with the human body surface;

[0057] Step 2: Establish a fabric mechanics model based on finite element analysis, simulate the deformation state of the fabric under the action of gravity and tension, optimize the cut piece boundary shape by minimizing the system energy, adjust the model parameters according to the physical properties of the fabric, and output the cut piece contour that fits the human body and conforms to the natural draping effect of the traditional front-opening;

[0058] Step 3: Cut piece segmentation and path planning; On the three-dimensional clothing surface, based on the geometric characteristics of the parametric human body model, automatically locate the segmentation points of the armhole line. The arc length ratio of the segmentation point on the front armhole line to the underarm point is 2:1, and the same is true for the back armhole line. Ensure that the cut piece segmentation conforms to the characteristics of the traditional one-piece structure. Connect the segmentation points through cubic Bezier curves to generate the segmentation lines for the front piece, back piece, and sleeve piece, while retaining the integrated characteristics of the raglan sleeve structure;

[0059] Step 4: Two-dimensional cut piece unfolding and layout optimization; Use the conformal mapping technology to unfold the three-dimensional surface into two-dimensional cut pieces, reduce the stretching deformation error, optimize the cut piece arrangement based on the genetic algorithm, and optimize the cut piece arrangement in combination with the fabric width and texture direction;

[0060] Step 5: The numerical control cutting device executes; generates G-code according to the two-dimensional piece contour, controls the movement track of the tool of the numerical control cutting machine, integrates a high-temperature contact head 313 behind the cutting tool head, and performs instantaneous hot pressing treatment on the edge of the piece to achieve seamless edge locking.

[0061] A cutting device includes a machine frame 100, a numerical control moving component 200, a cutting execution component 300, and a conveying component 400. The numerical control moving component 200 is installed on the machine frame 100 and reciprocates along a first direction. The numerical control moving component 200 is used to displace the cutting execution component 300 installed thereon in three-dimensional directions. The cutting execution component 300 cuts the fabric conveyed by the conveying component 400 and performs melting edge locking on the edge of the cut fabric. During the application of the present invention, the numerical control moving component 200 can displace the cutting execution component 300 in three-dimensional directions, and can flexibly adjust the cutting position in all directions of space according to different cutting requirements, greatly improving the cutting accuracy. For example, when cutting fabrics with complex patterns or irregular shapes, it can accurately locate each detailed part to ensure that the cut finished product meets the design requirements. Moreover, by reciprocating along the first direction, the movement of the numerical control moving component 200 in this direction is more stable and accurate. During multiple reciprocating movements, it can effectively reduce the error accumulation caused by movement deviation and ensure the accuracy consistency of each cutting. The reciprocating movement speed of the numerical control moving component 200 along the first direction is fast, and it can quickly adjust the position in three-dimensional directions, enabling the cutting execution component 300 to quickly reach the specified cutting position, greatly shortening the single cutting time and improving the overall production efficiency. In addition, the cutting execution component 300 can not only cut the conveyed fabric, but also perform melting edge locking on the edge of the cut fabric at the same time. This design reduces the subsequent separate edge locking process, improves the production efficiency, can effectively prevent the fabric edge from fraying and fuzzing, and improves the quality and durability of the product. For fabrics with different materials and thicknesses, through the precise control of the numerical control moving component 200 and the reasonable operation of the cutting execution component 300, good cutting and edge locking effects can be achieved, it can adapt to different fabrics, can reduce the fabric waste caused by cutting errors, improve the fabric utilization rate, reduce the raw material cost, reduce the links and workload of manual operations, and thus reduce the labor cost.

[0062] In one or more possible embodiments of the present invention, the numerically controlled moving member 200 includes a first-direction moving unit 210 that cooperates with the frame 100. A second moving unit 220 that moves in the second direction is provided on the first-direction moving unit 210. An auxiliary lifting unit 230 is cooperatively connected to the second moving unit 220. A first-direction driving motor 250 is installed on the auxiliary lifting unit 230 through a connecting seat 240. A displacement adjusting unit 260 that drives the cutting execution member 300 to move in the first direction and the third direction is installed at the end of the connecting seat 240. The first-direction moving unit 210, the second moving unit 220, and the auxiliary lifting unit 230 cooperate with each other to achieve precise displacement control in the X, Y, and Z directions. The displacement adjusting unit 260 can perform fine adjustment in the first direction and the third direction, further ensuring the cutting accuracy.

[0063] In one or more possible embodiments of the present invention, the first-direction moving unit 210 includes two sets of first slider rails 211 that are distributed along the first direction and are cooperatively installed on the frame 100. A moving base 212 that extends in the second direction is cooperatively connected to the tops of the two first slider rails 211. A driving plate 213 is installed on the lower surface of the moving base 212. A first driving motor 214 that is distributed along the second direction is installed on the driving plate 213. The first driving motor 214 is connected to a first gear 215 at its end and is in transmission connection with a first rack 216 installed on the frame 100. Thus, under the driving condition of the first driving motor 214, through the transmission cooperation of the first gear 215 and the first rack 216, the moving base 212 is matched with the first slider rails 211 and moves in the first direction, thereby driving the components installed on the moving base 212 to move in the first direction. The present invention adopts gear-rack transmission and slider-rail guidance, resulting in extremely small positioning errors and being able to meet the high-precision cutting requirements of various fabrics such as silk, cotton, and linen.

[0064] In one or more possible embodiments of the present invention, the second moving unit 220 includes two sets of second slider rails 221 that are distributed along the second direction and are cooperatively installed on the top of the moving base 212. A moving plate 222 is cooperatively connected to the tops of the two second slider rails 221. A second driving motor 223 that is arranged in the third direction is installed at one end of the moving plate 222. The output end of the second driving motor 223 is connected to a second gear 224. The second gear 224 is in transmission cooperation with a second rack 225 that is installed on the moving base 212 along the second direction. Through the transmission output of the second driving motor 223, the moving plate 222 is enabled to move along the second direction on the two second slider rails 221.

[0065] In one or more possible embodiments of the present invention, the auxiliary lifting unit 230 is used for double-redundancy displacement protection of the cutting execution component 300, and can drive the cutting execution component 300 to move in the first direction and the third direction. The auxiliary lifting unit 230 includes two sets of third slider rails 231 distributed along the first direction and cooperatively installed on the moving plate 222. The tops of the two third slider rails 231 are cooperatively installed on the lifting component seat 232. An air cylinder for driving the connecting seat 240 to displace in the third direction (not shown in the figure) is installed in the lifting component seat 232. A pushing air cylinder 233 that extends and retracts along the first direction and is connected to the outside of the lifting component seat 232 is provided. The pushing air cylinder 233 is installed on the top of the moving plate 222, and the telescopic movement of the pushing air cylinder 233 drives the lifting component seat 232 to displace in the first direction. The air cylinder installed in the lifting component seat 232 drives the connecting seat 240 to displace in the third direction, and cooperates with the displacement adjustment unit 260 to achieve double displacement adjustment, which can achieve double-redundancy displacement protection and ensure the orderly progress of fabric cutting. As can be seen from the above, the auxiliary lifting unit 230 is equipped with a pushing air cylinder 233 and an air cylinder for lifting. Displacement control is achieved through double driving, avoiding the risk of failure that may occur in single driving, enhancing the stability of the device during the cutting process, and ensuring the continuity of complex curve cutting, such as the complex curve of a traditional large front.

[0066] In one or more possible embodiments of the present invention, the displacement adjustment unit 260 includes a fixing plate 261 installed at the end of the connecting seat 240. On the other side of the fixing plate 261, a displacement cylinder seat 263 that is driven to displace in the first direction by a first displacement component 262 is cooperatively provided. On the side of the displacement cylinder seat 263, a displacement mounting plate 265 that is driven to displace in the third direction by a second displacement component 264 is cooperatively provided. The cutting execution component 300 is cooperatively installed on the displacement mounting plate 265. In the present invention, the displacement adjustment unit 260 can achieve flexible displacement in multiple directions, adapt to complex cutting requirements, achieve precise control of displacement, improve cutting accuracy and compensate for errors, and has a solid structure, can effectively disperse stress, extend the service life of the equipment, is convenient for disassembly, maintenance and component upgrade, can adapt to different tasks, and has strong compatibility.

[0067] In one or more possible embodiments of the present invention, the cutting execution component 300 includes a rotary cutting member 310 and a hemming member 320 mounted on the displacement mounting plate 265. The rotary cutting member 310 includes a cutting linear motor 311 mounted on the displacement mounting plate 265. The output end of the cutting linear motor 311 is snap-connected with a modular blade 312 and a high-temperature contact 313. The hemming member 320 includes a heating element 321 mounted on one side of the cutting linear motor 311. The heating element 321 transfers heat to the edge of the blade 312 and the high-temperature contact 313 through a copper heat-conducting pipe. A ceramic heating element can also be arranged inside the high-temperature contact 313 and connected to a temperature control module to achieve PID regulation. In the present invention, the cutting execution component 300 is integrally arranged by the rotary cutting member 310 and the hemming member 320. While cutting the fabric, the high-temperature contact 313 can be used to melt and hem the edge, reducing the process of separately hemming after cutting in the traditional process, significantly improving production efficiency. Moreover, the blade 312 and the high-temperature contact 313 are connected in a snap-type modular manner, and different specifications of cutting tools or heating modules can be quickly replaced according to the fabric material, adapting to diverse production requirements. Through the three-dimensional displacement adjustment of the numerical control moving component 200, complex curve cutting such as traditional large fronts can be flexibly processed, and the high-temperature contact 313 is used to hem synchronously to avoid edge deformation and ensure the processing accuracy of complex patterns.

[0068] In one or more possible embodiments of the present invention, a pneumatic pressing component is further included. The pneumatic pressing component is arranged on the conveyor belt of the conveying component 400 and is used to fix the fabric and eliminate the deformation during the cutting process. Specifically, a vacuum adsorption element and an electromagnetic pressing plate can be used in cooperation. The vacuum adsorption element and the electromagnetic pressing plate are conventional components in the field and will not be described in detail in the present invention.

[0069] In one or more possible embodiments of the present invention, a control component 500 is further included. The control component 500 includes a control cabinet 510. A numerical control unit is arranged inside the control cabinet 510. The numerical control unit includes an industrial PC and a motion control card, which can parse the cutting path data in real time and generate G-code instructions. A touch screen, an emergency stop button, input keys, etc. are arranged on the outer surface of the control cabinet 510, supporting parameter input and status monitoring.

[0070] In one or more possible embodiments of the present invention, it further includes a visual detection component 600. The visual detection component 600 includes a first visual displacement unit 610, a second visual displacement unit 620, and a visual unit 630. The first visual displacement unit 610 includes a first visual fixing plate 611. At the top of the first visual fixing plate 611, two groups of fourth slider rails 612 distributed along the first direction are fitted. At the center position of the upper surface of the first visual fixing plate 611, a bearing seat 613 is installed. The bearing seat 613 is threadedly connected to a threaded rod 614 that is cooperatively connected to the first-direction driving motor 250. By driving the threaded rod 614 with the first-direction driving motor 250, the first visual fixing plate 611 is driven to reciprocate in the first direction. The second visual displacement unit 620 includes two groups of fifth slider rails 624 distributed along the second direction and installed on the lower surface of the first visual fixing plate 611. The lower surfaces of the two fifth slider rails 624 are cooperatively connected to a second visual fixing plate 261. The upper surface of the second visual fixing plate 261 is connected to a visual displacement pushing cylinder 623 installed on the lower surface of the first visual fixing plate 611 and distributed along the second direction through a fixed cylinder seat 622. By extending and retracting the visual displacement pushing cylinder 623, the second visual fixing plate 261 is pushed, thereby driving the visual unit 630 installed on the lower surface of the second visual fixing plate 261 to move in the second direction. The visual unit 630 includes a number of uniformly distributed lighting lamps 631 and industrial cameras 632 installed on the lower surface of the second visual fixing plate 261. By performing image acquisition on the fabric to be cut in advance, a reference path can be generated in advance through an algorithm for the actual cut piece boundary and the parametric model, effectively improving the cutting efficiency. It cooperates with the image acquisition unit arranged above the cutting execution component 300 to perform real-time error correction and deviation correction, improve the fabric utilization rate, effectively reduce the single-piece cutting cycle, and can adapt to the texture recognition of various fabric materials (silk, cotton and linen, chemical fiber) and meet the cutting requirements of the complex curves of traditional large fronts.

[0071] When the cutting device of the present invention specifically cuts the fabric, it has the following steps:

[0072] In the preparation stage, the fabric to be cut is placed on the conveyor belt of the conveying component 400, and the pneumatic pressing component is started to fix the fabric by using vacuum adsorption elements, electromagnetic pressing plates, etc., to eliminate the deformation that may occur to the fabric during subsequent cutting.

[0073] Parameter setting: The operator inputs relevant parameters such as cut piece path data, cutting speed, and edge-locking temperature through the touch screen, input keys, etc. on the outer surface of the control cabinet 510 of the control component 500. The numerical control unit (industrial PC, motion control card) in the control cabinet 510 analyzes these data in real time and generates G-code instructions.

[0074] Visual inspection preparation: The visual inspection component 600 is activated. The first-direction drive motor 250 drives the threaded rod 614 to drive the first visual fixing plate 611 to reciprocate in the first direction. The visual displacement pushing cylinder 623 expands and contracts to push the second visual fixing plate 261, thereby driving the visual unit 630 installed on the lower surface of the second visual fixing plate 261 to move in the second direction. The lighting fixture 631 of the visual unit 630 illuminates the fabric to be cut, and the industrial camera 632 captures images of the fabric to be cut in advance;

[0075] Generating a reference path: The image data collected by the visual unit 630 is transmitted to the numerical control unit. The numerical control unit analyzes the actual cut piece boundary and the parametric model through an algorithm to generate a reference path, which will be used as the basis for the subsequent movement of the cutting execution component 300;

[0076] Positioning of the numerical control moving component 200: According to the generated reference path, the first drive motor 214 of the first-direction moving unit 210 is activated. Through the transmission cooperation between the first gear 215 connected to the end and the first rack 216 installed on the frame 100, the moving base 212 cooperates with the first slider rail 211 and moves in the first direction. At the same time, the second drive motor 223 of the second moving unit 220 transmits power output, and through the transmission cooperation between the second gear 224 and the second rack 225 installed on the moving base 212 along the second direction, the moving plate 222 moves along the second direction on the two second slider rails 221. The pushing cylinder 233 of the auxiliary lifting unit 230 expands and contracts to drive the lifting component seat 232 to displace in the first direction. The lifting cylinder in the lifting component seat 232 drives the connecting seat 240 to displace in the third direction. The displacement adjustment unit 260 further finely adjusts the positions of the cutting execution component 300 in the first direction and the third direction, so as to accurately move the cutting execution component 300 to the position to be cut;

[0077] Cutting and edge locking; When the cutting execution component 300 reaches the designated position, the cutting linear motor 311 of the rotary cutting component 310 of the cutting execution component 300 is activated, and the blade 312 at its output end cuts the fabric conveyed by the conveying component 400. At the same time, the heating element 321 of the edge locking component 320 transfers heat to the edge of the blade 312 and the high-temperature contact 313 through the copper heat conduction tube. The high-temperature contact 313 melts and locks the edge of the cut fabric. The ceramic heating element inside the high-temperature contact 313 is connected to the temperature control module to achieve PID adjustment and ensure the stability of the edge locking temperature;

[0078] Image acquisition and comparison: The image acquisition unit set above the cutting execution component 300 collects the image data during the cutting process in real time and transmits it to the numerical control unit. The numerical control unit compares the real-time collected image with the pre-generated reference path. If it is found that there is a deviation between the actual cutting path and the reference path, the numerical control unit will promptly adjust the motion parameters of the numerical control moving component 200 to correct the position of the cutting execution component 300 in real time, ensuring the cutting accuracy.

[0079] Completion of cutting: When the cutting and hemming operations of the fabric are completed according to the preset cutting path of the cut piece, the cutting execution component 300 stops working, the pneumatic pressing component releases the fixation of the fabric, and the conveying component 400 conveys the cut fabric to the specified position, completing the entire cutting process. At the same time, the device can enter the next round of cutting preparation work.

[0080] The specific embodiments disclosed in the present invention fall within the protection scope of the claims of the present invention, which is the specific subordinate implementation scope of the characteristic part of the present invention. The protection content of the specific embodiments is only an explanation of the protection scope of the claims of the present invention. The protection scope of the present invention is not limited to the protection content of the specific embodiments, and the protection content of the specific embodiments should not be construed as a limitation on the protection scope of the claims of the present invention.

[0081] Regarding other components not disclosed in the specification and drawings of the present invention, it does not prevent those skilled in the art from understanding the present invention. Other conventional components of the present invention are not disclosed in the specification, which does not prevent those skilled in the art from understanding the present invention.

[0082] The structural connection relationships of the products falling within the protection scope of the present invention all fall within the protection content of the present invention; without departing from the essence of the protection of the present invention, making conventional technical improvements to the structure of the product components, such as the improvements to the partial structure of the product in the specific embodiments of the present invention, will also fall within the essence of the protection of the present invention.

[0083] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above description is illustrative in nature and should not be construed as a limitation on the protection scope of the claims of the present invention.

[0084] Unless otherwise defined, all academic and scientific terms used herein have the same meaning as understood by those of ordinary skill in the technical field to which the present invention belongs.

[0085] In case of conflict, the definitions in this specification shall prevail.

[0086] Unless otherwise specified, all percentages, parts, ratios, etc. are by weight.

[0087] When a numerical value or numerical range, a preferred range, or a series of lower preferred values and upper preferred values are given, it should be understood that any range formed by any pair of numerical values of any smaller range limit value or preferred value and any larger range limit value or preferred value is specifically disclosed, regardless of whether the ranges are separately disclosed. Unless otherwise specified, where a numerical range is described in this specification, the range is intended to include the end values of the range and all integers and fractions within the range.

[0088] When the terms "about" or "approximate" are used to describe a numerical value or an end value of a range, the disclosure should include that specific numerical value or the end value involved.

[0089] The use of the articles "a" and "one" to describe the elements of the present invention is for convenience only and to give a general context of the present invention. Unless otherwise clearly stated, the description should be understood to include one or at least one.

Claims

1. A traditional one-piece front-opening cutting method for clothing based on parametric modeling, characterized in that: It includes the following steps: Step (1): Construct a parametric human body model by three-dimensional scanning or inputting key human body dimension parameters, and generate a three-dimensional clothing surface by combining the characteristics of the traditional front-fastening structure. Step (2): Adopt a mechanical energy model to simulate the natural draping state of the fabric after fitting the human body, and optimize the boundary shape of the cut pieces. Step (3): Based on the parametric model, automatically mark the segmentation points on the three-dimensional surface, generate the dividing lines of the front piece, back piece and sleeve piece, and ensure that the cut piece segmentation conforms to the characteristics of the traditional one-piece structure. Step (4): Unfold the three-dimensional surface into two-dimensional cut pieces, and optimize the cut piece layout through an algorithm to reduce fabric waste. Step (5): Through a cutting device, control the movement of the cutting knife according to the cut piece path planning, and at the same time combine the high-temperature contact head (313) to perform edge binding on the cutting edge to avoid fabric fraying.

2. A one-piece front-opening cutting method for traditional clothing based on parametric modeling according to the claim, characterized in that: It includes the following steps: Step (1): Human body model construction; Obtain point cloud data through a three-dimensional human body scanning device or manually input key dimension parameters, generate a parametric human body model through the B-spline surface algorithm, embed the characteristics of the traditional front-fastening structure in the model, and adjust the curvature of the front and back pieces through non-uniform rational B-spline surfaces to ensure fitting with the human body surface. Step (2): Establish a fabric mechanical model based on finite element analysis, simulate the deformation state of the fabric under the action of gravity and tension, optimize the boundary shape of the cut pieces by minimizing the system energy, adjust the model parameters according to the physical properties of the fabric, and output the cut piece contour that fits the human body and conforms to the natural draping effect of the traditional front-fastening. Step (3): Cut piece segmentation and path planning; On the three-dimensional clothing surface, based on the geometric characteristics of the parametric human body model, automatically locate the segmentation points of the armhole line. The arc length ratio of the segmentation point on the front armhole line to the axilla point is 2:1, and the same is true for the back armhole line. Ensure that the cut piece segmentation conforms to the characteristics of the traditional one-piece structure. Connect the segmentation points through cubic Bezier curves to generate the dividing lines of the front piece, back piece and sleeve piece, and at the same time retain the integrated characteristics of the raglan sleeve structure. Step (4): Two-dimensional cut piece unfolding and layout optimization; Adopt conformal mapping technology to unfold the three-dimensional surface into two-dimensional cut pieces, reduce the stretching deformation error, optimize the cut piece arrangement based on the genetic algorithm, and optimize the cut piece arrangement in combination with the fabric width and texture direction. Step (5): Execution of the numerical control cutting device; Generate G-code according to the two-dimensional cut piece contour, control the movement trajectory of the cutting tool of the numerical control cutting machine, integrate a high-temperature contact head (313) behind the cutting tool head, and perform instantaneous hot pressing treatment on the cut piece edge to achieve seamless edge binding; The specific cutting steps are as follows: Preparation stage, place the fabric to be cut on the conveyor belt of the conveying component (400), start the pneumatic pressing component, and fix the fabric by using vacuum adsorption elements, electromagnetic pressing plates, etc. to eliminate the deformation that may occur to the fabric during subsequent cutting. Parameter setting: The operator inputs relevant parameters such as cut piece path data, cutting speed, edge binding temperature, etc. through the touch screen, input keys, etc. on the outer surface of the control cabinet (510) of the control component (500). The numerical control unit (industrial PC, motion control card) in the control cabinet (510) parses these data in real time and generates G-code instructions. Visual inspection preparation: The visual inspection component (600) is activated. The first-direction drive motor (250) drives the threaded rod (614), driving the first visual fixing plate (611) to reciprocate in the first direction. The visual displacement push cylinder (623) expands and contracts to push the second visual fixing plate (261), thereby driving the visual unit (630) installed on the lower surface of the second visual fixing plate (261) to move in the second direction. The lighting fixture (631) of the visual unit (630) illuminates the fabric to be cut, and the industrial camera (632) pre-collects images of the fabric to be cut; Generate a reference path: The image data collected by the visual unit (630) is transmitted to the numerical control unit. The numerical control unit analyzes the actual cutting boundary and the parametric model through algorithms to generate a reference path, which will be used as the basis for the subsequent movement of the cutting execution component (300); Positioning of the numerical control moving component (200): According to the generated reference path, the first drive motor (214) of the first-direction moving unit (210) is activated. Through the transmission cooperation between the first gear (215) connected to the end and the first rack (216) installed on the frame (100), the moving base (212) cooperates with the first slider rail (211) and moves in the first direction. At the same time, the second drive motor (223) of the second moving unit (220) transmits power output, and through the transmission cooperation between the second gear (224) and the second rack (225) installed on the moving base (212) along the second direction, the moving plate (222) moves along the second direction on the two second slider rails (221). The push cylinder (233) of the auxiliary lifting unit (230) expands and contracts to drive the lifting component seat (232) to displace in the first direction. The lifting cylinder in the lifting component seat (232) drives the connecting seat (240) to displace in the third direction. The displacement adjustment unit (260) further finely adjusts the positions of the cutting execution component (300) in the first direction and the third direction, thereby accurately moving the cutting execution component (300) to the position to be cut; Cutting and edge locking; When the cutting execution component (300) reaches the specified position, the cutting linear motor (311) of the rotary cutting member (310) of the cutting execution component (300) is activated, and the blade (312) at its output end cuts the fabric conveyed by the conveying component (400). At the same time, the heating element (321) of the edge locking member (320) transfers heat to the edge of the blade (312) and the high-temperature contact (313) through a copper heat conduction tube. The high-temperature contact (313) melts and locks the edge of the cut fabric. The ceramic heating element inside the high-temperature contact (313) is connected to the temperature control module to achieve PID adjustment and ensure the stability of the edge locking temperature; Image acquisition and comparison: The image acquisition unit set above the cutting execution component (300) acquires the image data during the cutting process in real time and transmits it to the numerical control unit. The numerical control unit compares the real-time acquired image with the pre-generated reference path. If it is found that there is a deviation between the actual cutting path and the reference path, the numerical control unit will promptly adjust the motion parameters of the numerical control moving component (200) to correct the position of the cutting execution component (300) in real time to ensure the cutting accuracy. Completion of cutting: When the cutting and edge-locking operations of the fabric are completed according to the preset cutting path of the piece, the cutting execution component (300) stops working, the pneumatic pressing component releases the fixation of the fabric, and the conveying component (400) conveys the cut fabric to the designated position to complete the entire cutting process. At the same time, the device can enter the preparation work for the next round of cutting.

3. A cutting device, characterized in that: It includes a frame (100), a numerical control moving component (200), a cutting execution component (300), and a conveying component (400). The numerical control moving component (200) is installed on the frame (100) and reciprocates in the first direction. The numerical control moving component (200) is used to displace the cutting execution component (300) installed on it in three-dimensional directions. The cutting execution component (300) cuts the fabric conveyed by the conveying component (400) and melts and locks the edges of the cut fabric.

4. A cutting device according to claim 3, characterized in that: The numerical control moving component (200) includes a first-direction moving unit (210) cooperating with the frame (100). A second moving unit (220) moving in the second direction is arranged on the first-direction moving unit (210). An auxiliary lifting unit (230) is connected and cooperated with the second moving unit (220). The auxiliary lifting unit (230) is installed with a first-direction driving motor (250) through a connecting seat (240). The end of the connecting seat (240) is installed with a displacement adjusting unit (260) driving the cutting execution component (300) to move in the first direction and the third direction.

5. The cutting device according to claim 4, characterized in that: The first-direction moving unit (210) includes two groups of first slider rails (211) distributed along the first direction and cooperatively installed on the frame (100). The tops of the two first slider rails (211) are cooperatively connected with a moving base (212) extending in the second direction. A driving plate (213) is installed on the lower surface of the moving base (212). A first driving motor (214) distributed along the second direction is installed on the driving plate (213). The first driving motor (214) is connected to a first gear (215) at its end and is in transmission connection with a first rack (216) installed on the frame (100).

6. The cutting device according to claim 4, characterized in that: The second moving unit (220) includes two sets of second slide rails (221) distributed along the second direction and fitted on the top of the moving base (212). A moving plate (222) is connected to the tops of the two second slide rails (221). One end of the moving plate (222) is provided with a second driving motor (223) arranged along the third direction. The output end of the second driving motor (223) is connected to a second gear (224), and the second gear (224) is in driving cooperation with a second rack (225) arranged along the second direction on the moving base (212).

7. A cutting device according to claim 4, characterized in that: The auxiliary lifting unit (230) is used for double-redundancy displacement protection of the cutting execution component (300), and can drive the cutting execution component (300) to move in the first direction and the third direction. The auxiliary lifting unit (230) includes two sets of third slide rails (231) distributed along the first direction and fitted on the moving plate (222). The tops of the two third slide rails (231) are fitted with a lifting component seat (232). A lifting cylinder for driving the connecting seat (240) to displace in the third direction is installed in the lifting component seat (232). A pushing cylinder (233) that extends and retracts along the first direction and is connected to the outside of the lifting component seat (232) is provided.

8. The cutting device according to claim 4, characterized in that: The displacement adjustment unit (260) includes a fixing plate (261) installed at the end of the connecting seat (240). On the other side of the fixing plate (261), a displacement cylinder seat (263) driven to displace in the first direction by a first displacement component (262) is arranged. On the side of the displacement cylinder seat (263), a displacement mounting plate (265) driven to displace in the third direction by a second displacement component (264) is arranged. A cutting execution component (300) is fitted on the displacement mounting plate (265).

9. The cutting device according to claim 3, characterized in that: The cutting execution component (300) includes a rotary cutting member (310) and a hemming member (320) installed on the displacement mounting plate (265). The rotary cutting member (310) includes a cutting linear motor (311) installed on the displacement mounting plate (265). The output end of the cutting linear motor (311) is snap-connected with a modular blade (312) and a high-temperature contact (313). The hemming member (320) includes a heating element (321) installed on one side of the cutting linear motor (311). The heating element (321) transfers heat to the edge of the blade (312) and the high-temperature contact (313) through a copper heat conduction pipe.

10. A cutting device according to claim 3, wherein: It further includes a visual detection component (600). The visual detection component (600) includes a first visual displacement unit (610), a second visual displacement unit (620), and a visual unit (630). The first visual displacement unit (610) includes a first visual fixing plate (611). At the top of the first visual fixing plate (611), two sets of fourth slider rails (612) distributed along the first direction are fitted. At the center position of the upper surface of the first visual fixing plate (611), a bearing seat (613) is installed. The bearing seat (613) is threadedly connected to a threaded rod (614) that is cooperatively connected to a first-direction driving motor (250). The second visual displacement unit (620) includes two sets of fifth slider rails (624) distributed along the second direction and installed on the lower surface of the first visual fixing plate (611). The lower surfaces of the two fifth slider rails (624) are cooperatively connected to a second visual fixing plate (261). The upper surface of the second visual fixing plate (261) is connected to a visual displacement pushing cylinder (623) installed on the lower surface of the first visual fixing plate (611) and distributed along the second direction through a fixed cylinder seat (622). The visual unit (630) includes a number of uniformly distributed lighting lamps (631) and an industrial camera (632) installed on the lower surface of the second visual fixing plate (261).

Images