Production device and method of weft-knitted uniform-stretch jacquard fabric

Abstract

The application relates to a weft-knitted uniform-stretch jacquard fabric production device and method, and relates to the field of single-sided knitted pattern fabric production. The yarn feeding mechanism is reformed on the basis of the structure of an existing single-sided circular weft-knitting machine, single-sided weft-circular-knitted stitches are used as basic stitches, different exchange combinations of ground yarn and face yarn are used to form uniform-stretch, multi-functional knitted jacquard fabrics on the surface and the bottom of the fabric, the functions of the fabrics can be freely changed, the pattern size is not limited, the structure is uniform and stable, only simple washing and setting are needed for post-processing, the method is green and environment-friendly, the post-processing process is reduced, a large amount of post-processing equipment investment is eliminated, the production cost is reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of single-sided knitted patterned fabric production technology, and in particular to a weft-knitted uniformly extended jacquard fabric production apparatus and method. Background Technology

[0002] As modern consumers place increasingly higher demands on the comfort and aesthetics of clothing, the demand for diverse and high-quality patterned fabrics is also constantly growing. Currently, the production of patterned fabrics mainly involves the individual or combined application of jacquard weaving, printing, dyeing, embroidery, and floral embroidery to create different pattern effects. For printed and dyed patterned fabrics, because dyes or pigments are used to form the patterns, the fabric's hand feel, breathability, and durability are relatively poor. Embroidery and floral embroidery are methods of hand or machine embroidery on fabric; their production speed is slow, costs are high, and large-scale mass production is difficult to achieve. Therefore, adopting knitted jacquard technology to produce patterned fabrics not only avoids the pollution caused by subsequent printing and dyeing processes but also enables more efficient large-scale mass production, greatly improving production efficiency and saving production costs.

[0003] However, patterned fabrics produced using jacquard weaving techniques may suffer from uneven stretching and lateral elasticity, and are often limited in function. Existing uniform stretching methods can only be implemented through dyeing and printing, and the use of dyes and chemicals may pollute the environment, failing to meet environmental protection requirements. Uniform stretching jacquard fabrics offer a more comfortable and natural wearing experience, while also making it easier to realize various designs and patterns, enhancing the fabric's aesthetic appeal. Furthermore, using yarns with different functions for jacquard weaving can produce more ergonomic and multifunctional garments.

[0004] In related technologies, machine configuration is essential for achieving diversified and functional clothing. Among existing machines, jacquard circular knitting machines can produce simple patterned fabrics, but their functionality is limited; yarn-adjusting circular knitting machines can only produce horizontal stripe patterns, making it difficult to produce clothing that combines fashion, comfort, and multifunctionality. For example, patent CN104532458B discloses a method and special device for producing weft-knitted single-sided exchange-added jacquard fabrics. Using a plain weave as the basic structure, a device is added to each loop-forming system of a single-sided seamless underwear circular knitting machine. This allows two guide fingers to simultaneously feed two different colored yarns into the loop-forming system, and under the control of the system, the pattern information is combined to transform and form the jacquard fabric. However, the clothing woven by this method has limited functionality and fewer patterns and colors, making it difficult to meet consumers' demands for multifunctional and diversified seamless products.

[0005] Therefore, in order to meet the demand for multifunctional and diversified clothing, and to enhance the diversity and fashionability of clothing, it is of great value and significance to research and develop a production method and device for weft-knitted uniformly extended jacquard fabrics. Summary of the Invention

[0006] The purpose of this application is to provide a weft-knitted uniformly stretched jacquard fabric production apparatus and method to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0008] In a first aspect, this application provides a weft-knitted uniform extension jacquard fabric production apparatus. The apparatus includes a modified yarn feeding mechanism based on the structure of an existing single-sided circular weft knitting machine. The yarn feeding mechanism includes: a yarn feeding housing, a drive assembly located inside the yarn feeding housing and a transmission assembly connected to the drive assembly, a yarn guide plate connected to one side of the top of the yarn feeding housing, a yarn baffle plate connected to one side of the bottom of the yarn feeding housing, and a yarn guiding assembly located between the yarn guide plate and the yarn baffle plate.

[0009] The yarn guide assembly performs a swaying motion up and down under the cooperation of the transmission assembly and the reset assembly. The end of the yarn guide plate away from the yarn feeding housing has a yarn guide hole. The number of yarn guide assemblies is at least two sets, and each set of yarn guide assemblies corresponds to a transmission assembly, a drive assembly, a reset assembly and a yarn guide hole.

[0010] In one possible implementation, the drive assembly includes a drive box containing a reciprocating oscillating motor and an electrically connected solenoid valve thereto, the reciprocating oscillating motor having three operating states: low, medium, and high.

[0011] In one possible implementation, the transmission assembly includes:

[0012] A needle knife connected to the power output end of the reciprocating rocking motor; and

[0013] A cam hinged within the yarn feeding housing;

[0014] The needle knife is connected to the first end of the cam via a transmission connection.

[0015] In one possible implementation, the yarn guiding assembly includes a yarn guiding finger bracket mounted on the yarn baffle plate, an auxiliary lever hinged to the top of the yarn guiding finger bracket, a first end of the auxiliary lever being throttledly connected to a second end of the cam, a yarn guiding finger connected to the second end of the auxiliary lever, and a yarn feeding sleeve mounted on the end of the yarn guiding finger away from the auxiliary lever, the yarn feeding sleeve having a yarn threading hole.

[0016] In one possible implementation, the transmission assembly further includes a cam seat located below the cam, the top of the cam seat having an arc surface that matches the cam to assist in guiding the rotation of the cam.

[0017] In one possible implementation, the reset assembly includes a first reset spring, a second reset spring, and a third reset spring; a first end of the first reset spring is connected to the yarn guide finger, and a second end of the first reset spring is connected to the yarn guide plate; a first end of the second reset spring is connected to the auxiliary lever, and a second end of the second reset spring is connected to the yarn guide plate; a first end of the third reset spring is connected to the auxiliary lever, and a second end of the third reset spring is connected to the cam seat.

[0018] In one possible implementation, the transmission assembly further includes a limiting bolt located above the cam to limit the rotation angle of the cam.

[0019] Secondly, this application provides a method for producing a weft-knitted evenly stretched jacquard fabric, the method being applicable to any of the weft-knitted evenly stretched jacquard fabric production apparatuses described above, the method comprising:

[0020] During weaving, each loop unit has a guide finger that inserts a different type of yarn. The face yarn and ground yarn are positioned at appropriate padding angles according to weaving requirements. At least two types of yarn are used. When the pattern needs to be changed, the control system of the single-sided circular knitting machine sends a signal to the solenoid valve corresponding to each type of yarn according to the pattern file. This controls the corresponding reciprocating oscillating motor to switch between three working states: low, medium, and high. This, in turn, drives the corresponding guide finger to rotate, thereby changing the padding angle of each type of yarn, and finally obtaining the weft-knitted uniform extension jacquard fabric.

[0021] The beneficial effects of the technical solution provided in this application include at least the following:

[0022] This application modifies the yarn feeding mechanism based on the existing single-sided circular knitting machine structure, using a single-sided plain knit weft weave as the basic structure. By utilizing different combinations of ground yarn and face yarn, a uniformly extended, multifunctional knitted jacquard fabric is formed on the surface and bottom of the fabric. This type of fabric has freely changeable functions, unlimited pattern size, uniform and stable structure, and only requires simple water washing and shaping after finishing. It is green and environmentally friendly, reduces the number of finishing processes, eliminates a large investment in finishing equipment, reduces production costs, and greatly improves production efficiency. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This invention provides a three-dimensional structural schematic diagram of a weft-knitted uniformly stretched jacquard fabric production apparatus according to an exemplary embodiment of the present application.

[0025] Figure 2 This invention provides a schematic front view of a weft-knitted uniformly stretched jacquard fabric production apparatus according to an exemplary embodiment of the present application.

[0026] Figure 3 This invention provides a top view of a weft-knitted uniformly stretched jacquard fabric production apparatus according to an exemplary embodiment of this application.

[0027] Figure 4 This illustration shows a schematic diagram of the yarn threading position relationship of a weft-knitted uniformly extended jacquard fabric provided in an exemplary embodiment of this application;

[0028] Figure 5 This illustration shows a schematic diagram of the loop structure of a weft-knitted uniformly extended jacquard fabric provided in an exemplary embodiment of this application;

[0029] In the diagram: 1. Yarn feeding housing; 2. Drive assembly; 21. Drive box; 3. Transmission assembly; 31. Needle knife; 32. Cam; 33. Cam seat; 34. Limit bolt; 4. Yarn guide plate; 41. Yarn guide hole; 5. Yarn baffle plate; 6. Yarn guide assembly; 61. Yarn guide finger bracket; 62. Auxiliary lever; 63. Yarn guide finger; 64. Yarn feeding ceramic sleeve; 65. Yarn threading hole; 7. Reset assembly; 71. First reset spring; 72. Second reset spring; 73. Third reset spring. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "multiple" means two or more.

[0032] First, a brief introduction to the structure of existing single-sided circular knitting machines:

[0033] In existing single-sided circular knitting machines, the yarn bobbins are placed on a floor-mounted yarn rack (in some circular knitting machines, the yarn bobbins and yarn racks are located above the machine). The yarn bobbins are fed to the knitting mechanism via a yarn feeding mechanism. The knitting mechanism mainly includes components such as a cylinder, cylinder needles, cylinder cams, sinker rings, sinkers, sinker cams or a needle plate, needle plate needles, and yarn guides. During the rotation of the cylinder, the knitted fabric is pulled downwards by a traction mechanism below the knitting mechanism, and finally, the take-up mechanism below the traction mechanism winds the fabric into a roll. In addition, the entire circular knitting machine also includes a transmission mechanism, frame, auxiliary devices, etc.

[0034] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0035] Example 1:

[0036] Figures 1 to 3 The following are schematic diagrams of a three-dimensional, front, and top view of a weft-knitted uniformly extended jacquard fabric production apparatus provided in an exemplary embodiment of this application. The apparatus includes a modified yarn feeding mechanism based on the structure of an existing single-sided circular weft knitting machine. The yarn feeding mechanism includes: a yarn feeding housing 1, a drive assembly 2 located inside the yarn feeding housing 1, a transmission assembly 3 connected to the drive assembly 2, a yarn guide plate 4 connected to the top side of the yarn feeding housing 1, a yarn baffle plate 5 connected to the bottom side of the yarn feeding housing 1, and a yarn guiding assembly 6 located between the yarn guide plate 4 and the yarn baffle plate 5. The yarn guiding assembly 6 performs a swaying motion up and down under the cooperation of the transmission assembly 3 and the reset assembly 7. The end of the yarn guide plate 4 away from the yarn feeding housing 1 has a yarn guiding hole 41. The number of yarn guiding assemblies 6 is at least two sets, and each set of yarn guiding assemblies 6 corresponds to a set of transmission assembly 3, a set of drive assembly 2, a set of reset assembly 7, and a set of yarn guiding holes 41.

[0037] Specifically, each drive assembly 2 includes a drive box 21, which contains a reciprocating oscillating motor and an electrically connected solenoid valve. The reciprocating oscillating motor has three working positions: low, medium, and high. Each transmission assembly 3 includes a needle knife 31 connected to the power output end of the reciprocating oscillating motor, and a cam 32 hinged within the yarn feeding housing 1; wherein the needle knife 31 is drive-connected to the first end of the cam 32. The transmission assembly 3 also includes a cam seat 33, located below the cam 32, with a top surface matching the arc surface of the cam 32 for assisting in guiding the rotation of the cam 32. The transmission assembly 3 also includes a limiting bolt 34, located above the cam 32, for limiting the rotation angle of the cam 32.

[0038] In this embodiment, since the reciprocating swing motor has three working states: low, middle and high, the reciprocating swing motor can drive the corresponding needle knife 31 to swing to the low target position, the middle target position or the high target position respectively.

[0039] Furthermore, each yarn guiding assembly 6 includes a yarn guiding finger bracket 61 mounted on the yarn baffle plate 5. An auxiliary lever 62 is hinged to the top of the yarn guiding finger bracket 61. The first end of the auxiliary lever 62 is connected to the second end of the cam 32. A yarn guiding finger 63 is fixed to the second end of the auxiliary lever 62 by screws. A yarn feeding sleeve 64 is mounted on the end of the yarn guiding finger 63 away from the auxiliary lever 62. The yarn feeding sleeve 64 has a yarn threading hole 65. Each reset assembly 7 includes a first reset spring 71, a second reset spring 72, and a third reset spring 73. The first end of the first reset spring 71 is connected to the yarn guiding finger 63, and the second end of the first reset spring 71 is connected to the yarn guiding plate 4. The first end of the second reset spring 72 is connected to the auxiliary lever 62, and the second end of the second reset spring 72 is connected to the yarn guiding plate 4. The first end of the third reset spring 73 is connected to the auxiliary lever 62, and the second end of the third reset spring 73 is connected to the cam seat 33. That is, the three return springs are located in the middle of the yarn guide finger 63, the lower front end and the middle of the auxiliary lever 62, respectively.

[0040] In this embodiment of the application, when the driving component 2 drives the transmission component 3, and the transmission component 3 drives the yarn guide component 6 to move, the yarn guide component 6 can be reset by the reset component 7 (i.e., the first reset spring 71, the second reset spring 72 and the third reset spring 73).

[0041] In this embodiment, the required yarn padding angle for the corresponding yarn can be obtained by adjusting the distance between the end of the yarn baffle 5 away from the yarn feeding housing 1 and the yarn guide finger bracket 61. This allows for flexible adjustment of the installation position of the yarn guide finger bracket 61 or change of the size of the yarn baffle 5. Specifically, the solenoid valve controls the needle knife to swing up and down, thus controlling the movement of the yarn guide finger. It controls the cam to rotate within a certain range, thereby causing the auxiliary lever and the yarn guide finger to rotate. The height and movement of the yarn guide finger are determined by the interaction with the return spring, thereby changing the distance between the yarn threading hole at the front end of the yarn guide finger and the knitting needle, and changing the size of the yarn padding angle. Yarns with a larger yarn padding angle are ground yarns, while yarns with a smaller yarn padding angle are top yarns, i.e., face yarns.

[0042] In this embodiment, the yarn feeding sleeve 64 is made of ceramic, which can reduce yarn breakage during yarn feeding and make yarn guiding smoother. At the same time, the yarn feeding sleeve can be finely adjusted back and forth as needed, thereby increasing the angle of feeding the ground yarn and face yarn, increasing the clarity of the pattern, and meeting actual production needs.

[0043] In this embodiment, a solenoid valve is directly used for driving, which avoids the delay and malfunction of the existing air valve drive, and allows for more effective and flexible control of the height and movement of the yarn guide fingers.

[0044] Example 2:

[0045] Next, a method for producing a weft-knitted evenly stretched jacquard fabric provided in this application will be described. This method is applicable to the weft-knitted evenly stretched jacquard fabric production apparatus as described above, and the method includes:

[0046] During weaving, each loop unit has a guide finger that inserts a different type of yarn. The face yarn and ground yarn are positioned at appropriate padding angles according to weaving requirements. At least two types of yarn are used. When the pattern needs to be changed, the control system of the single-sided circular knitting machine sends a signal to the solenoid valve corresponding to each type of yarn according to the pattern file. This controls the corresponding reciprocating oscillating motor to switch between three working states: low, medium, and high. This, in turn, drives the corresponding guide finger to rotate, thereby changing the padding angle of each type of yarn, ultimately resulting in a weft-knitted evenly extended jacquard fabric.

[0047] In one example, taking three sets of yarn guide components as an example, that is, having three yarn guide fingers (hereinafter referred to as yarn guide fingers L, M, and N respectively), corresponding to the insertion of three types of yarn, specifically:

[0048] Figure 4 This illustration shows a schematic diagram of the yarn threading position relationship of a weft-knitted uniformly extended jacquard fabric provided in an exemplary embodiment of this application. Figure 4 (1) is the yarn threading position before the transformation. Figure 4 (2) For the changed yarn threading positions, the guide fingers L, M, and N corresponding to each loop unit thread three types of yarns, A, B, and C, respectively. Yarns A, B, and C have different padding angles. Among them, the padding angle α of yarn A, which serves as the face yarn, is... A The horizontal angle α of the padding yarn, which is smaller than that of the B yarn used as the ground yarn, is less than that of B The longitudinal angle of the padding yarn is β A Greater than β B When a pattern change is needed, the control system of the single-sided circular knitting machine sends signals to the solenoid valves corresponding to each yarn according to the pattern file. This, in turn, controls the needle knife to swing up and down via a reciprocating oscillating motor, which in turn drives the yarn guide fingers to rotate, changing the padding angle of yarns A and B. This causes the threading hole of yarn B to rotate clockwise, becoming the face yarn, with the padding angle α... B Decrease, size equal to α A The thread hole of yarn A is raised, returning to its non-working state, and the knitting needle cannot hook yarn A. The thread hole of yarn C is in its lowest position, and the padding angle α of yarn C is... C equal to α B It turned into a gauze.

[0049] In detail, when the solenoid valves corresponding to yarn guide fingers L and M are opened, the reciprocating oscillating motor controls the needle to work in the middle and low positions respectively. The corresponding cams rotate clockwise to a specific angle, pushing the auxiliary lever and yarn guide fingers towards the knitting needle. Yarn A from the threading hole on yarn guide finger L is inserted to form the face yarn, and yarn B from the threading hole on yarn guide finger M is inserted to form the ground yarn, creating fabrics with two different functions. When weaving to a special area, the fabric function changes. The solenoid valve corresponding to yarn guide finger L controls the needle to return to the high position, and the solenoid valve corresponding to yarn guide finger M controls the needle to return to the middle position. The solenoid valve corresponding to yarn guide finger N is opened and operates in the low position. The corresponding cam rotates clockwise, pushing the auxiliary lever and yarn guide fingers downward. Yarn B from the threading hole on yarn guide finger M is inserted to form the face yarn, and yarn C from the threading hole on yarn guide finger N is inserted to form the ground yarn, thus performing jacquard weaving. The yarn feeding angle can be finely adjusted by slightly adjusting the distance between the threading hole and the knitting needle as needed.

[0050] In this embodiment of the application, in the design software for weft-knitted uniformly stretched jacquard fabrics, pattern data information is designed as needed, and different color blocks are used to distinguish the areas covered by different colored yarns in the jacquard structure. For example... Figure 5 As shown, the black coil area represents the area where yarn A covers yarn B, and the white coil area represents the area where yarn B covers yarn A. The pattern data is converted into a controllable file for the yarn guide fingers, precisely determining the entry and exit height of each guide finger in each area and changing the yarn padding angle to meet the functional requirements of different areas of the fabric.

[0051] To better understand this application, the following description, in conjunction with the accompanying drawings and three specific embodiments, provides a further explanation. It should be noted that the embodiments described herein are merely some examples of this application and do not limit the scope of protection of this application.

[0052] Example 3:

[0053] This embodiment uses the above-described weft-knitted evenly extended jacquard fabric production device and method to prepare weft-knitted evenly extended jacquard fabric. Taking a three-set yarn guide assembly as an example, that is, having three yarn guide fingers (hereinafter referred to as yarn guide fingers L, M, and N respectively), corresponding to the threading of three types of yarn, specifically:

[0054] Yarn A is a quick-drying yarn (polyester), yarn B is spandex, and yarn C is a more abrasion-resistant yarn (nylon). Yarns A, B, and C pass through the yarn guide holes in the yarn guide plate and then into the yarn threading holes. Yarn A corresponds to guide finger L, yarn B corresponds to guide finger M, and yarn C corresponds to guide finger N. During weaving... Figure 5In rectangular region 1, the yarn guide finger L is controlled by a solenoid valve, causing the needle knife to be in the middle position. This pushes the cam to rotate clockwise, which in turn pushes the auxiliary lever and the yarn guide finger to rotate counterclockwise, thus bringing the yarn guide finger to a specific position. Similarly, the yarn guide finger M is controlled by its corresponding solenoid valve, causing the needle knife to be in the low position. This pushes the cam to rotate clockwise, which in turn pushes the auxiliary lever and the yarn guide finger to rotate counterclockwise, thus bringing the yarn guide finger to the low position. This ensures that the transverse angle of the polyester padding yarn in the threading hole is lower than that of the spandex, making the polyester the face yarn and covering the spandex as the ground yarn, achieving the garment's quick-drying, wrinkle-resistant, and shaping functions. In the weaving process... Figure 5 When the rectangular area 2 is in place, the solenoid valve controlling the rotation of the yarn guide finger L closes, and the needle knife returns to the high position; the solenoid valve controlling the yarn guide finger N pushes the needle knife to the middle position, pushing the corresponding cam to rotate clockwise, causing the yarn guide finger to rotate counterclockwise, and the nylon in the threading hole on the yarn guide finger N is inserted to form the face yarn; the spandex remains unchanged as the ground yarn, thus achieving the function of nylon as the face yarn covering the spandex as the ground yarn, realizing the wear-resistant and shaping function of the garment. The method described in this embodiment realizes the function of changing the face yarn. The yarn used in the embodiment is not limited to the functional yarn described. Technicians can change the color, function, characteristics, etc. of yarns A, B, and C according to needs to meet actual production requirements.

[0055] Example 4:

[0056] This embodiment uses the above-described weft-knitted evenly extended jacquard fabric production device and method to prepare weft-knitted evenly extended jacquard fabric. Taking a three-set yarn guide assembly as an example, that is, having three yarn guide fingers (hereinafter referred to as yarn guide fingers L, M, and N respectively), corresponding to the threading of three types of yarn, specifically:

[0057] The yarn used is ultra-high molecular weight polyethylene filament (A yarn), polypropylene yarn (B yarn), and Coolmax yarn (also known as four-tube profiled polyester fiber) with excellent moisture-wicking properties. For example, in Coolmax yarn, yarns A, B, and C pass through the guide holes in the yarn guide plate into the threading holes. Yarn A corresponds to guide finger L, yarn B to guide finger M, and yarn C to guide finger N. During weaving... Figure 5 In rectangular region 2, the yarn guide finger L is controlled by a solenoid valve, causing the needle knife to be in the middle position. This pushes the cam to rotate clockwise, which in turn pushes the auxiliary lever and the yarn guide finger to rotate counterclockwise, thus bringing the yarn guide finger to a specific position. Similarly, the yarn guide finger M is also controlled by a solenoid valve, causing the needle knife to be in the low position. This pushes the cam to rotate clockwise, which in turn pushes the auxiliary lever and the yarn guide finger to rotate counterclockwise, thus bringing the yarn guide finger to the low position. This ensures that the transverse angle of the polypropylene padding yarn in the threading hole is lower than that of the ultra-high molecular weight polyethylene filament, making the ultra-high molecular weight polyethylene the face yarn, covering the polypropylene as the ground yarn, thus achieving the garment's cut-resistant function. In weaving... Figure 5In rectangular area 3, the solenoid valve controlling the rotation of the yarn guide finger L closes, and the needle knife returns to the high position; the solenoid valve controlling the yarn guide finger M pushes the needle knife to the low position, pushing the corresponding cam to rotate clockwise, causing the yarn guide finger to rotate counterclockwise, and the polypropylene yarn in the threading hole on the yarn guide finger M is inserted to form the face yarn; the solenoid valve controlling the yarn guide finger N opens, pushing the needle knife to the middle position, pushing the corresponding cam to rotate clockwise, causing the yarn guide finger to rotate counterclockwise to the middle position, and the Coolmax yarn in the threading hole on the yarn guide finger N is inserted to form the ground yarn, thus achieving the function of polypropylene as the face yarn covering the Coolmax yarn as the ground yarn, realizing the moisture-wicking function of the garment. The method described in this embodiment realizes the change of ground yarn and face yarn, and introduces a third yarn on the basis of the original two yarns to realize the yarn adjustment function. The yarn used in the embodiment is not limited to the described yarn, nor is it limited to three yarns. Technicians can change the color, function and quantity of the yarn according to the needs to realize the production of multi-color patterned fabrics to meet actual production needs.

[0058] Example 5:

[0059] This embodiment uses the above-described weft-knitted evenly extended jacquard fabric production apparatus and method to prepare weft-knitted evenly extended jacquard fabric. Taking two sets of yarn guide components as an example, that is, having two yarn guide fingers (hereinafter referred to as yarn guide fingers L and M respectively), corresponding to the threading of two types of yarn, specifically:

[0060] Guide finger L feeds yarn A, and guide finger M feeds yarn B. Yarn A is color one, and yarn B is color two. Yarns A and B pass through the guide holes in the guide plate and into the threading hole, respectively. During normal weaving, yarn A serves as the face yarn, and yarn B serves as the ground yarn. Guide finger L is controlled by a solenoid valve, which keeps the needle knife in the neutral position, pushing the cam to rotate clockwise, which in turn pushes the auxiliary lever and guide finger to rotate counterclockwise, thus moving the guide finger to a specific position. Guide finger M is also controlled by a solenoid valve, which keeps the needle knife in the low position, pushing the cam to rotate clockwise, which in turn pushes the auxiliary lever and guide finger to rotate counterclockwise, thus moving the guide finger to the low position. This ensures that the transverse angle of the color one yarn in the threading hole is lower than that of the color two yarn, making color one yarn the face yarn and covering the color two yarn, which serves as the ground yarn. During weaving... Figure 5In rectangular area 4, the yarn guide finger L is controlled by a solenoid valve, causing the needle knife to be in a low position. This pushes the cam to rotate clockwise, which in turn pushes the auxiliary lever and the yarn guide finger to rotate counterclockwise, thus bringing the yarn guide finger to a specific position. Similarly, the yarn guide finger M is also controlled by a solenoid valve, causing the needle knife to be in a middle position. This pushes the cam to rotate clockwise, which in turn pushes the auxiliary lever and the yarn guide finger to rotate counterclockwise, thus bringing the yarn guide finger to a low position. This achieves the effect of color two yarn becoming the face yarn, covering the color one yarn used as the ground yarn, thus realizing the color variation and pattern effect of the garment. The method described in this embodiment realizes the function of changing the face yarn and ground yarn. The yarn used in this embodiment is not limited to the described functional yarn. Technicians can change the functions and characteristics of A and B according to needs to meet actual production requirements.

[0061] In summary, this application modifies the yarn feeding mechanism based on the existing single-sided circular knitting machine structure, using a single-sided plain knit weft weave as the basic structure. By utilizing different combinations of ground yarn and face yarn, a uniformly extended, multifunctional knitted jacquard fabric is formed on the surface and bottom of the fabric. This type of fabric has freely changeable functions, unlimited pattern size, uniform and stable structure, and only requires simple water washing and setting after finishing. It is green and environmentally friendly, reduces the number of finishing processes, eliminates the need for a large investment in finishing equipment, reduces production costs, and greatly improves production efficiency.

[0062] In the embodiments disclosed in this application, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this application according to the specific circumstances.

[0063] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A weft-knitted uniform-length jacquard fabric production device, characterized in that, The device includes a modified yarn feeding mechanism based on the structure of an existing single-sided circular knitting machine. The yarn feeding mechanism includes: a yarn feeding housing, a drive assembly located inside the yarn feeding housing and a transmission assembly connected to the drive assembly, a yarn guide plate connected to the top side of the yarn feeding housing, a yarn baffle plate connected to the bottom side of the yarn feeding housing, and a yarn guiding assembly located between the yarn guide plate and the yarn baffle plate. The yarn guide assembly performs a swaying motion up and down under the cooperation of the transmission assembly and the reset assembly. The yarn guide plate has a yarn guide hole at the end away from the yarn feeding housing. The number of yarn guide assemblies is at least two sets, and each set of yarn guide assemblies corresponds to a transmission assembly, a drive assembly, a reset assembly and a yarn guide hole. The drive assembly includes a drive box, which contains a reciprocating swing motor and an electrically connected solenoid valve. The reciprocating swing motor has three working positions: low, medium, and high. The transmission assembly includes: A needle knife connected to the power output end of the reciprocating rocking motor; and A cam hinged within the yarn feeding housing; The needle knife is connected to the first end of the cam via a transmission connection. The yarn guiding assembly includes a yarn guiding finger bracket mounted on the yarn baffle plate. An auxiliary lever is hinged to the top of the yarn guiding finger bracket. The first end of the auxiliary lever is connected to the second end of the cam. A yarn guiding finger is connected to the second end of the auxiliary lever. A yarn feeding sleeve is installed at the end of the yarn guiding finger away from the auxiliary lever. The yarn feeding sleeve has a yarn threading hole. The transmission assembly also includes a cam seat located below the cam, the top of which has an arc surface that matches the cam to assist in guiding the rotation of the cam.

2. The weft-knitted uniform-length jacquard fabric production apparatus according to claim 1, characterized in that, The reset assembly includes a first reset spring, a second reset spring, and a third reset spring; The first end of the first return spring is connected to the yarn guide finger, and the second end of the first return spring is connected to the yarn guide plate.

3. The weft-knitted uniform-length jacquard fabric production apparatus according to claim 2, characterized in that, The first end of the second return spring is connected to the auxiliary lever, and the second end of the second return spring is connected to the yarn guide plate.

4. The weft-knitted uniform-length jacquard fabric production apparatus according to claim 3, characterized in that, The first end of the third return spring is connected to the auxiliary lever, and the second end of the third return spring is connected to the cam seat.

5. The weft-knitted uniform-length jacquard fabric production apparatus according to claim 1, characterized in that, The transmission assembly also includes a limiting bolt located above the cam to limit the rotation angle of the cam.

6. A method for producing a weft-knitted uniformly stretched jacquard fabric, the method being applicable to the weft-knitted uniformly stretched jacquard fabric production apparatus as described in any one of claims 1 to 5, characterized in that, The method includes: During weaving, each yarn guide finger corresponding to each loop unit inserts a different type of yarn. The face yarn and ground yarn are selected at appropriate padding angles according to weaving requirements. There are at least two types of yarn. When a pattern change is required, the control system of the single-sided circular knitting machine sends a signal to the solenoid valve corresponding to each yarn according to the pattern file, thereby controlling the corresponding reciprocating oscillating motor to switch between three working states: low, medium and high. This, in turn, drives the corresponding yarn guide fingers to rotate, thereby changing the padding angle of each yarn, and finally obtaining the weft-knitted uniform extension jacquard fabric.

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