3D Printing-Based Knitted Fabric Forming Method and Knitted Fabric

Abstract

The present disclosure relates to the technical field of knitted fabric forming, and particularly to a 3D printing-based knitted fabric forming method and a knitted fabric. The method includes the following steps: determining the connection area between the knitted fabric raw material and the 3D printing consumable; knitting the knitted fabric raw material and adjusting the knitting characteristics of the yarns in the connection area; performing 3D printing through a 3D printer to connect the connection area of the knitted fabric raw material with the 3D printing consumable; and performing a deformation treatment on the connection area of the knitted fabric raw material after 3D printing is completed to obtain a formed knitted fabric. In the embodiments of the present disclosure, the knitting characteristics of the yarns in the connection area of the knitted fabric raw material are adjusted, the 3D printing consumable is directly added to the surface of the knitted fabric, and the bonding effect between the 3D printing consumable and the knitted fabric is improved. Moreover, by performing a deformation treatment on the connection area, a knitted fabric with the desired shape is obtained, thereby achieving rich visual effects and high-precision functionality.

Description

Technical Field

[0001] The present disclosure relates to the technical field of knitted fabric forming, and particularly to a method for forming a knitted fabric based on 3D printing and a knitted fabric. Background Art

[0002] The combination technology of fused deposition modeling 3D printing and fabrics has been studied in the academic field. Generally, it focuses on how to improve the adhesion between the printing consumables and the fabric, and on achieving 4D printing (i.e., the deformation effect after 3D printing) using elastic fabrics and flexible TPU consumables.

[0003] Among them, during the fused deposition modeling 3D printing process, it pauses first, then places the fabric on the printing platform, and then continues the printing step to bond the consumables to the fabric surface. However, in the prior art, there are still the following defects:

[0004] The fabric uses ordinary fabrics that can be purchased on the market, such as cotton linen, mesh, stretch fabric, etc., and is not designed for 3D printing. Therefore, in the existing 3D printing, there is a poor combination between the consumables and the fabric, and thus the required fabric cannot be obtained. Summary of the Invention

[0005] To solve at least the above technical problems in the prior art, the embodiments of the present disclosure provide a method for forming a knitted fabric based on 3D printing and a knitted fabric.

[0006] On the one hand, the embodiments of the present disclosure provide a method for forming a knitted fabric based on 3D printing. The method includes the following steps: determining the connection area between the raw material of the knitted fabric and the 3D printing consumables; knitting the raw material of the knitted fabric and adjusting the knitting characteristics of the yarns in the connection area; performing 3D printing by a 3D printer to connect the connection area of the raw material of the knitted fabric with the 3D printing consumables; and performing a deformation treatment on the connection area of the raw material of the knitted fabric after 3D printing is completed to obtain a formed knitted fabric.

[0007] In some embodiments, before the step of knitting the raw material of the knitted fabric, the method further includes: obtaining parameter information of the yarn used for the knitted fabric; the parameter information includes one or more of yarn composition, melting point or yarn count.

[0008] In some embodiments, knitting the raw material of the knitted fabric and adjusting the knitting characteristics of the yarns in the connection area includes: mixing materials with a melting point different from that of the current yarn for the yarns in the connection area to adjust the melting point of the yarns in the connection area.

[0009] In some embodiments, knitting the raw material of the knitted fabric and adjusting the knitting characteristics of the yarns in the connection area include: adjusting the diameter of the yarns in the connection area.

[0010] In some embodiments, knitting the raw material of the knitted fabric and adjusting the knitting characteristics of the yarns in the connection area include: mixing elastic materials into the yarns in the connection area to adjust the elasticity of the yarns in the connection area.

[0011] In some embodiments, knitting the raw material of the knitted fabric further includes: when the 3D printing consumable needs to penetrate the knitted fabric or has a set viscosity, adjusting the knitting density of the yarns in the connection area.

[0012] In some embodiments, before 3D printing, the method includes: performing 3D modeling and obtaining a print file, and performing slicing processing according to the print file; performing slicing processing on the print file includes: determining the number of layers where the fabric needs to be paused and placed, and when the 3D printing consumable does not need to be connected to the printed part, setting a grid-like printing path, and when the 3D printing consumable needs to be connected to the printed part, setting a tiled printing path.

[0013] In some embodiments, performing 3D printing further includes: installing the knitted fabric in the initial state of 3D printing and / or installing the knitted fabric at a specified position during 3D printing.

[0014] In some embodiments, deforming the connection area of the knitted fabric raw material after 3D printing includes: heating, water-soluble or washing the connection area of the knitted fabric raw material to deform the connection area and drive the 3D printing consumable to deform synchronously.

[0015] Another aspect of the embodiments of the present disclosure provides a 3D printing-based knitted fabric, including a knitted fabric and a 3D printing structure, the knitted fabric including a connection area; the 3D printing structure is connected and formed with the connection area of the knitted fabric by the above method.

[0016] A 3D printing-based knitted fabric forming method and a knitted fabric provided by the embodiments of the present disclosure include operations such as the selection and matching of yarns and 3D printing consumables, the design of the knitting structure of the knitted fabric, the setting of printer parameters, and the deformation processing after 3D printing. During 3D printing operation, the knitting characteristics of the knitted fabric itself, especially the yarns in the connection area of the knitted fabric, are adjusted, so that the printing nozzle directly adds the 3D printing consumable to the surface of the knitted fabric, improving the bonding effect between the 3D printing consumable and the knitted fabric, and through the deformation processing of the connection area, a knitted fabric with the desired shape is obtained, thus achieving rich visual effects and high-precision functionality. Description of the Drawings

[0017] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown by way of example and not limitation, wherein:

[0018] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0019] Figure 1 is the flowchart of a 3D printing-based knitting fabric forming method according to an embodiment of the present disclosure Figure 1 ;

[0020] Figure 2 is the flowchart of a 3D printing-based knitting fabric forming method according to an embodiment of the present disclosure Figure 2 ;

[0021] Figure 3 is the flowchart of a 3D printing-based knitting fabric forming method according to an embodiment of the present disclosure Figure 3 ;

[0022] Figure 4 is the flowchart of a 3D printing-based knitting fabric forming method according to an embodiment of the present disclosure Figure 4 ;

[0023] Figure 5 is the flowchart of a 3D printing-based knitting fabric forming method according to an embodiment of the present disclosure Figure 5 . Detailed Description of the Specific Embodiments

[0024] To make the objects, features, and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present disclosure.

[0025] As Figure 1 shown, an embodiment of the present disclosure provides a 3D printing-based knitting fabric forming method, and the method includes the following steps:

[0026] Step S20: Determine the connection area between the knitting fabric raw material and the 3D printing consumable. According to the application scenario requirements of the product and the visual effect or functionality to be achieved, first perform the overall appearance and shape design, and then, according to the design result, the connection area between the knitting fabric raw material and the 3D printing consumable can be determined. For example, the knitting fabric raw material includes one or more connection areas for connecting with the 3D printing consumable.

[0027] For example, when using the original knitted fabric material as clothing, 3D printing consumables can be added at specific positions of the clothing, such as the knee position or the elbow position, and the connection area between the specific position and the 3D printing consumables is the connection area of the original knitted fabric material. Or, for example, by combining the 3D printing consumables with the original knitted fabric material, styles such as specific shapes can be achieved.

[0028] Step S30: Weave the original knitted fabric material and adjust the knitting characteristics of the yarns in the connection area. Perform knitting programming according to the pre-designed pattern, and use a knitting machine to weave the original knitted fabric material. During the weaving process, the knitting characteristics of the yarns in the connection area of the original knitted fabric material need to be adjusted accordingly. Adjust according to the actual application environment, scenario, etc. of the connection area, so as to make the original knitted fabric material meet various usage requirements. The knitting characteristics can be interpreted as the characteristic properties of the yarns involved in the weaving of the original knitted fabric material, including but not limited to yarn material, yarn performance, knitting density, etc.

[0029] For example, when the melting point of the yarns in the connection area is lower than the first set value, for example, lower than 220 degrees Celsius, mix high-melting-point materials into the yarns in the connection area to make the melting point of the yarns in the connection area higher than the first preset value.

[0030] For example, if the yarn used in the original knitted fabric material is a material with a relatively low melting point, such as artificial fiber, the melting point of the yarns in the corresponding connection area of the original knitted fabric material is also relatively low. To avoid damage to the yarns in the connection area by the nozzle of 3D printing, at least the melting point of the yarns in the connection area needs to be increased. For example, add high-melting-point fiber materials such as natural fiber into the artificial fiber yarns, and mix and weave them with the original artificial fiber to increase the melting point of the yarns in the connection area. For example, the ratio of natural fiber and artificial fiber can be selected according to the amount of increase in the melting point.

[0031] For example, when the diameter of the yarns in the connection area is greater than the second preset value and / or the roughness is greater than the third preset value, adjust the knitting density and / or diameter of the yarns in the connection area to make the diameter of the yarns in the connection area less than the second preset value and / or the roughness less than the third preset value. For example, when the yarns in the original knitted fabric material / connection area are thicker or rougher, at least lower the knitting density of the yarns in the connection area, weave them into a relatively loose structure, or replace them with finer and smoother yarns.

[0032] For example, when the 3D printing consumable is a set elastic material, the yarn in the connection area is mixed with the elastic material so that the elasticity of the yarn in the connection area is higher than the fourth preset value. For example, when the 3D printing consumable uses thermoplastic polyurethane elastomer rubber and a twisted 3D effect is required for the printed product, elastic fibers containing spandex or a shrinkable ribbed structure can be used to improve the plasticity of the raw material / connection part of the knitted fabric. For example, the amount of elastic fibers containing spandex mixed in is determined according to the required elasticity value.

[0033] For example, when the 3D printing consumable needs to penetrate the raw material of the knitted fabric or has a set viscosity, the knitting density of the yarn in the connection area is adjusted. For example, when the 3D printing consumable needs to have a good bonding effect through the connection area, such as when the product needs to meet the washing requirement or the product shape needs to be precisely matched, the knitting density of the yarn in the connection area can be adjusted, that is, at least the knitting density in the connection area is lowered. Based on this, during 3D printing, since the aperture of the mesh holes in the connection area is large, it is beneficial for the penetration of the 3D printing consumable, thereby improving the permeability and bonding effect.

[0034] Step S50: Perform 3D printing through a 3D printer to connect the connection area of the raw material of the knitted fabric with the 3D printing consumable. For example, performing 3D printing through a 3D printer further includes: installing the raw material of the knitted fabric in the initial state of 3D printing and / or installing the raw material of the knitted fabric at a specified position during 3D printing, and finally realizing the combination between the 3D printing consumable and the specified position of the raw material of the knitted fabric.

[0035] Step S60: Perform a deformation treatment on the connection area of the knitted fabric raw material after 3D printing is completed to obtain a formed knitted fabric. Through 3D printing operations, the connection between the 3D printing consumable and the knitted fabric raw material can be realized. Then, in Step S60, a deformation treatment is performed again to obtain a further deformed product.

[0036] For example, heat the connection area of the knitted fabric raw material, where the heat source for heating is a heat gun, an iron or other heating equipment. For example, the knitted fabric raw material is made of artificial fiber with a relatively low melting point. After heat treatment, the artificial fiber in the connection area shrinks. When the connection area shrinks, the shrinkage force drives the 3D printing consumable to deform synchronously, further achieving the purpose of the deformation treatment.

[0037] For example, during the heating operation, uniform and continuous heating of the connection part is required. At the same time, it is also necessary to pay attention to avoiding the situation of excessive local heat shrinkage or melting. The higher the temperature, the shorter the heating time. For example, when heating at 350 degrees, it takes about 3 minutes, and when at 300 degrees, it takes about 5 minutes; in addition, it can also be adjusted accordingly according to the melting point of the artificial fiber.

[0038] For example, a water-soluble operation is performed on the connection area of the original knitted fabric material. The connection area contains water-soluble yarn. The printed fabric is immersed in water to dissolve the water-soluble yarn in the connection area, relax the knitting structure of this part (connection area). After there is no yarn constraint in the connection area, it can drive the 3D printing consumables to deform synchronously, further achieving the purpose of deformation treatment.

[0039] For example, the temperature of the water used is adjusted according to the specification of the water-soluble yarn. When using low-temperature water-soluble yarn, it is immersed in water with a temperature higher than 20 degrees. When using conventional water-soluble yarn, it is immersed in water with a temperature higher than 40 degrees.

[0040] To achieve the subsequent deformation effect by using the water-soluble yarn as described above, when performing the knitting operation on the original knitted fabric material, it is necessary to set the way of yarn feeding, knitting, and yarn output, that is, change the knitting of the water-soluble yarn in the connection area. To ensure that the rest will not be damaged and fall off after the water-soluble yarn is dissolved in water.

[0041] For example, determine the part that needs to form a loop-off effect after dissolution. One or more rows before entering the knitting of this part, transfer the loops that are about to loop off to the non-loop-off loops, so that the part that is about to loop off subsequently is a newly formed loop in the knitting of the next row. In the last row before the knitting of the loop-off part is completed, bring in the water-soluble yarn and only knit the loops that need to loop off, and then switch back to the main yarn to continue knitting until the entire fabric is completed, so that the loop-off action starts from the row of knitting with the water-soluble yarn without affecting the subsequent knitted part.

[0042] For example, a washing treatment is performed on the connection area of the original knitted fabric material. Combining the characteristics of the original knitted fabric material, the yarn in the connection area deforms after the washing treatment, which can drive the 3D printing consumables to deform synchronously, further achieving the purpose of deformation treatment.

[0043] For example, the consumable of the yarn in the connection area contains natural animal fibers such as wool. When the knitting structure is looser and the content of natural animal fibers in the yarn composition is higher, the shrinkage of the yarn is higher. When performing washing and felting, the water temperature, detergent, rubbing, and drying of the washing water will all affect the shrinkage. When a better shrinkage effect is required, warm water (30 degrees and above), conventional washing (rubbing and drying for more than 30 minutes) and adding detergent (the dosage of the detergent is determined according to the amount of the knitted fabric) should be selected.

[0044] As Figure 2 shown, the embodiment of the present disclosure provides a method for forming a knitted fabric based on 3D printing. The method further includes the following steps:

[0045] Step S40: Perform 3D modeling and obtain a printing file, and perform slicing processing according to the printing file. After the production of the knitted fabric is completed, 3D modeling and slicing processing operations need to be performed to complete the subsequent 3D printing operation.

[0046] In some embodiments, the slicing process of the printed file includes: determining the number of layers where the fabric placement needs to be paused, and when the 3D printing consumable does not need to be connected to the printed part, setting it to a grid-like printing path, and when the 3D printing consumable needs to be connected to the printed part, setting it to a tiled printing path.

[0047] During 3D printing operations, the knitted panel raw material can be placed at the printing position first, or after 3D printing for a period of time, the knitted panel raw material can be placed on the printed 3D printing consumable. When the subsequent 3D printing consumable does not need to be connected to the printed 3D printing consumable, it is set to a grid-like printing path, that is, there is no penetration requirement for the 3D printing consumable during printing. When continuing to print, grid-like 3D printing can be used, thereby reducing the connection strength and making the connection part easy to separate; on the contrary, when it needs to be connected to the printed 3D printing consumable, it is set to a tiled printing path, that is, when continuing to print, the 3D printing consumable needs to penetrate through the connection area, which can improve the connection strength between the 3D printing consumables.

[0048] In the embodiments of the present disclosure, product forming in step S60 can also be achieved through shrinkage deformation. For example, it is necessary to adjust the model shape, layout composition, thickness, etc. according to topological principles and fabric stretchability. The degree of deformation of the 3D printed part is related to the stretchability of the knitted fabric and the printing thickness of the model. Among them, the stronger the shrinkage of the knitted fabric, the more obvious the deformation effect, and the thinner the printing thickness of the model, the more obvious the deformation effect. When using a combined shape to form a deformation effect, the pattern needs to be designed in a form that converges from the surrounding to the center, and a gap of 0.5 cm to 1 cm should be left between the pattern units to facilitate the shrinkage of the knitted fabric.

[0049] For example, before the knitted fabric raw material is connected to the 3D printing consumable, a pre-stretching treatment is performed, that is, the knitted fabric is unfolded outward relative to its natural state, and the 3D printing consumable is connected to the unfolded knitted fabric. When 3D printing is completed, the knitted fabric is released, and the knitted fabric shrinks back to its natural state, and the shrinkage causes the 3D printed part to deform at the same time.

[0050] As Figure 3 shown, the embodiments of the present disclosure provide a method for forming a knitted fabric based on 3D printing, and the method further includes the following steps:

[0051] Step S10: Obtain parameter information of the yarn used for the knitted fabric raw material; the parameter information includes one or more of yarn material, melting point, outer diameter, roughness, or knitting density.

[0052] When producing the raw materials of knitted fabrics, it is necessary to adjust the knitting characteristics in the connection area to meet the usage requirements of different 3D printing scenarios. Therefore, the parameter information of the yarns in the knitted fabric is obtained in advance to facilitate the adjustment of the knitting characteristics of the yarns in the connection area.

[0053] As Figure 4 shown, an embodiment of the present disclosure provides a method for forming a knitted fabric based on 3D printing. The method further includes the following steps:

[0054] Step S21: Knit a sample and test the parameter information of the sample. Determine to complete knitting or adjust knitting according to the test results.

[0055] That is, before the production of the knitted fabric, in order to avoid knitting errors and to facilitate the timely adjustment of the knitted fabric. For example, the tests on the knitted sample include one or more of yarn material, melting point, outer diameter, roughness or knitting density. Or, it is also possible to test the visual effect of the knitted fabric, whether the knitting structure is feasible, the overall hand feeling and thickness, etc., and measure and calculate the length-width ratio of the coils (i.e., n needles = n centimeters, n rows = n centimeters). Calculate the number of coils of the knitted fabric and the actions of adding or subtracting needles according to the ratio data, adjust the final knitting programming file and complete the knitting.

[0056] As Figure 5 shown, an embodiment of the present disclosure provides a method for forming a knitted fabric based on 3D printing. The method further includes the following steps:

[0057] Step S51: 3D printing by a 3D printer further includes: fixedly installing the knitted fabric through a fixing device to prevent the knitted fabric from generating printing displacement.

[0058] When performing 3D printing, the product printed by the 3D printing consumables is always static. Therefore, correspondingly, the knitted fabric also needs to be fixed, and the knitted fabric needs to be fixed so that it cannot slide. For example, the knitted fabric is fixed by using an auxiliary fixing device. For example, the fixing device is a clip, and the knitted fabric is fixed on the mounting plate of the 3D printer by the clip.

[0059] An embodiment of the present disclosure provides a knitted fabric based on 3D printing, including a knitted fabric and a 3D printing structure. The knitted fabric includes a connection area; the 3D printing structure is connected and formed with the connection area of the knitted fabric through the above-mentioned method for forming a knitted fabric based on 3D printing. This knitted fabric selects and uses the knitted fabric and 3D printing consumables based on the above-mentioned method for forming a knitted fabric based on 3D printing.

[0060] The knitting fabric forming method based on 3D printing provided by the embodiments of the present disclosure can combine knitting fabrics with 3D printing consumables. This method mainly includes five stages: product design, knitting production, 3D modeling and slicing processing, 3D printing, and post-processing (deformation). The following will describe these four stages in combination with clothing production.

[0061] Product design stage: Design the appearance of the clothing, including but not limited to visual effects or functionality, etc. Determine the materials to be used, including the materials of the yarns in the knitting fabric and the materials of the paired 3D printing consumables; at the same time, confirm the 3D printing effects, such as the size, range, and quantity of the clothing, and confirm the effects of the knitting fabric, such as the connection method with the printing consumables, the knitting structure at the connection, and thickness adjustment, etc.

[0062] Knitting production stage: Perform knitting programming according to the product design, convert the effects of the knitting fabric into the knitting actions of each loop (such as knitting, hanging stitches, floats, or purling, etc.), parameter settings (such as stitch density, knitting speed, etc.), and hardware settings (such as yarn feeders, tension, etc.). Execute the programming file through a knitting machine. For example, the knitting machine is a hand-operated flat knitting machine, a computerized flat knitting machine, or a circular knitting machine. First, knit a small sample piece containing the 3D printing connection area and test the sample. Calculate the final number of loops and the increase or decrease of stitches of the knitting fabric according to the proportional data, adjust the final knitting programming file, and complete the knitting.

[0063] 3D modeling and slicing processing stage: According to the completed knitting fabric, determine the size of the part in contact with 3D printing. If pre-stretching of the elastic fabric is required during the printing process, measure the size after stretching and perform 3D modeling or adjust the final printing size of the existing model. Open the 3D modeling file in the printer slicing software and set the basic parameters according to the structure of the fabric connection area, such as consumable size, nozzle and platform heating temperature, filling structure, printing speed, etc., for printing slicing.

[0064] 3D printing stage: First, perform normal printing to test whether the printing effect of the consumables and the parameter settings of the slicing file need to be adjusted. If the printing is smooth, execute the preset pause action. Place the knitted test small sample on the printing platform and fix it to the extent that it cannot slide on the fabric surface. Then, continue the printing action to test the distance between the nozzle and the fabric and the adhesion degree of the consumables. The knitting fabric can be fixed with clips, double-sided tape, etc. It is necessary to evenly pull and fix at all angles to avoid printing displacement caused by fabric pulling and deformation. If clips are to be used, test the fixing position during the sample printing stage to ensure that it will not affect the movement path of the printing nozzle and cause printing displacement.

[0065] Post - processing and shaping stage: Determine the shaping method of the 3D - printed finished product according to the material of the knitted fabric raw material. For example, by using heating, water - soluble or washing treatment methods, the finished product is deformed into the final required shape, that is, 4D shaping of the product is achieved on the basis of 3D printing.

[0066] In the embodiments of the present disclosure, the knitted fabric is a raw material designed according to usage requirements. During 3D printing, the knitted fabric is fixed on the printing platform of the 3D printer, and the printing nozzle directly adds 3D - printing consumables to the surface of the knitted fabric, thereby achieving rich visual effects and high - precision functionality. And it enables the knitted fabric to evolve from a 2D plane to a 3D solid and even have a 4D interactive feeling, which also improves the practical wearability of 3D printing itself.

[0067] The shaping of the knitted fabric and the 3D - printed shaping both belong to an integral - shaping structure. In the embodiments of the present disclosure, the combination of the two integral - shaping structures is realized, which minimizes the material waste existing in the production process and provides a new sustainable solution for traditional industries.

[0068] In the embodiments of the present disclosure, through the use of software such as knitting programming, 3D modeling, and slicing, the digitalization of the product research and development to the proof - of - concept / s production process is completed, and then the large - scale intelligent manufacturing is realized. And by introducing the use of knitted fabrics, the advantages of yarn composition, knitting structure, computer programming, industrial production, etc. are empowered to 3D printing, enriching the functionality of the composite material, optimizing the existing technical process, and broadening the application scenarios.

[0069] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specifically defined.

[0071] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A method for forming a knitted fabric based on 3D printing, characterized in that, The method includes the following steps: Determine the connection area between the knitted fabric raw material and the 3D printing consumable; Weave the knitted fabric raw material and adjust the knitting characteristics of the yarn in the connection area, where the knitting characteristics of the yarn include the melting point of the yarn, the diameter of the yarn, and the elasticity of the yarn; Perform 3D printing through a 3D printer to connect the connection area of the knitted fabric raw material with the 3D printing consumable; Perform a deformation treatment on the connection area of the knitted fabric raw material after 3D printing is completed to obtain a formed knitted fabric.

2. The 3D printing-based knitting fabric forming method according to claim 1, wherein Before the step of weaving the knitted fabric raw material, the method further includes: Obtain the parameter information of the yarn used for the knitted fabric; The parameter information includes one or more of yarn composition, melting point, or count.

3. The 3D printing-based knitting fabric forming method according to claim 2, characterized in that, The step of weaving the knitted fabric raw material and adjusting the knitting characteristics of the yarn in the connection area includes: Mix the yarn in the connection area with a material having a melting point different from that of the current yarn to adjust the melting point of the yarn in the connection area.

4. The method for forming a knitted fabric based on 3D printing according to claim 2, characterized in that, The step of weaving the knitted fabric raw material and adjusting the knitting characteristics of the yarn in the connection area includes: Adjust the diameter of the yarn in the connection area.

5. The method for forming a knitted fabric based on 3D printing according to claim 2, wherein The step of weaving the knitted fabric raw material and adjusting the knitting characteristics of the yarn in the connection area includes: Mix the yarn in the connection area with an elastic material to adjust the elasticity of the yarn in the connection area.

6. The method for forming a knitted fabric based on 3D printing according to claim 2, wherein, The step of weaving the knitted fabric raw material further includes: When the 3D printing consumable needs to penetrate the knitted fabric or has a set viscosity, adjust the knitting density of the yarn in the connection area.

7. The 3D printing-based knitting fabric forming method according to any one of claims 2 to 6, characterized in that, Before the 3D printing, the method includes: Perform 3D modeling and obtain a print file, and perform slicing processing according to the print file; the slicing processing of the print file includes: Determine the layers where the fabric needs to be paused and placed, and when the 3D printing consumable does not need to be connected to the printed part, set it as a grid-type printing path, and when the 3D printing consumable needs to be connected to the printed part, set it as a tiled printing path.

8. The 3D printing-based knitting fabric forming method according to any one of claims 2 to 6, characterized in that, The step of performing 3D printing further includes: Install the knitted fabric in the initial state of 3D printing and / or install the knitted fabric at a specified position during 3D printing.

9. The method for forming a knitted fabric based on 3D printing according to claim 8, characterized in that: The step of performing a deformation treatment on the connection area of the knitted fabric raw material after 3D printing is completed includes: Perform heating, water-soluble, or washing treatment on the connection area of the knitted fabric raw material to deform the connection area and drive the 3D printing consumable to deform synchronously.

10. A knitted fabric based on 3D printing, characterized in that, It includes a knitted fabric and a 3D printing structure, and the knitted fabric includes a connection area; The 3D printing structure is connected and formed with the connection area of the knitted fabric by the 3D printing-based knitted fabric forming method as described in any one of claims 1 to 9.

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