Large circular knitting machine and laminated suede fabric processing technology

Abstract

The present invention discloses a large circular knitting machine and a process for processing laminated suede fabrics, which comprises a machine body and a winding mechanism arranged inside the machine body, wherein the machine body is an annular cavity structure, an outer ring knitting mechanism is arranged in a ring shape on the top of the machine body, an inner ring knitting mechanism is arranged inside the outer ring knitting mechanism, and the inner ring knitting mechanism is hoisted and installed through a door frame component, and the outer ring knitting mechanism and the inner ring knitting mechanism are arranged in a concentric circle structure with an annular gap between the two, and the gap is used to transport the woven fabric downward and be received and stored by the winding mechanism; the outer ring knitting mechanism and the inner ring knitting mechanism both comprise a plurality of knitting needles arranged in a ring array, the number of knitting needles of the inner ring knitting mechanism is half of the number of knitting needles of the outer ring knitting mechanism, and are in an orderly and uniformly aligned state.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent textile technology, and in particular relates to a large circular knitting machine and a processing technology for laminated suede fabrics. Background Art

[0002] Circular knitting machines, also known as circular weft knitting machines (or circular weft knitting machines), have experienced rapid growth due to their multiple loop-forming systems (referred to in the industry as the number of yarn feed paths or loop-forming paths, or simply paths), high speeds, high production output, rapid pattern changes, high fabric quality, minimal process steps, and strong product adaptability.

[0003] With the development of the textile industry and the advancement of technology, the demand for improving fabric quality and production efficiency is increasing. The existing circular knitting machines use a circular arrangement of reciprocating knitting needles for knitting operations. When processing complex knitting patterns and multi-yarn mixed knitting, there is a lack of flexibility. At the same time, when producing suede fabrics, subsequent operations such as napping or flocking are usually required, which reduces production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a circular knitting machine and a process for processing laminated suede fabrics, so as to improve the weaving flexibility of the circular knitting machine when processing complex fabrics and improve the production efficiency of suede fabrics.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] A circular knitting machine comprises a body and a winding mechanism arranged inside the body. The body main body is an annular cavity structure. An outer knitting mechanism is arranged in an annular shape on the top of the body. An inner knitting mechanism is arranged inside the outer knitting mechanism. The inner knitting mechanism is hoisted and installed via a gantry component. The outer knitting mechanism and the inner knitting mechanism are arranged in a concentric circle structure with an annular gap between them. The gap is used to convey the woven fabric downward and to be stored by the winding mechanism.

[0007] The outer ring knitting mechanism and the inner ring knitting mechanism both include a plurality of knitting needles arranged in a ring array, the number of knitting needles of the inner ring knitting mechanism is half the number of knitting needles of the outer ring knitting mechanism, and the knitting needles are in an orderly and uniformly aligned state;

[0008] An inner layer wire feeding mechanism and an outer layer wire feeding mechanism are arranged on the portal component. The outer layer wire feeding mechanism is used to transport the yarn to the knitting needles of the outer circle knitting mechanism, and the inner layer wire feeding mechanism is used to transport the yarn to the knitting needles of the inner circle knitting mechanism.

[0009] Furthermore, the main bodies of the inner layer wire feeding mechanism and the outer layer wire feeding mechanism are both circular ring structures, wherein the inner layer wire feeding mechanism is arranged on the outer ring of the outer layer wire feeding mechanism and is located below the outer layer wire feeding mechanism.

[0010] Furthermore, the inner circle knitting mechanism includes a needle guide frame and a needle disk, and the multiple knitting needles are arranged in a central column on the needle guide frame, and the front ends of the knitting needles are arranged in an inclined outward state.

[0011] Furthermore, the knitting needles of the inner loop knitting mechanism are arranged at a 45-degree inclination, and the hooks of the knitting needles are arranged in a downwardly open state.

[0012] Furthermore, the needle disk of the inner circle knitting mechanism is a beveled disk structure, with a slide groove arranged in a circle on the outer periphery, and the handle at the rear end of the knitting needle is embedded in the slide groove.

[0013] Furthermore, the inner layer yarn feeding mechanism has an automatic yarn changing function.

[0014] Furthermore, an inner ring motor is arranged on the gantry component, which is used to drive the needle disk of the inner ring knitting mechanism to rotate. Hall sensors are arranged on the needle disk of the inner ring knitting mechanism and the needle disk of the outer ring knitting mechanism, and ensure that the two needle disks are in a synchronous rotation working state.

[0015] A process for processing laminated suede fabrics, using the aforementioned large circular knitting machine, comprises:

[0016] The fibers, elastane and modal, are blended to produce a yarn in which modal accounts for 65% and elastane 35%;

[0017] The yarn is treated with empty packages, with the spacing between the empty packages maintained at 2-3.5 mm, to produce finished yarn;

[0018] The finished yarn is arranged at the inner layer yarn feeding mechanism of the circular knitting machine;

[0019] At the outer knitting mechanism, expanded acrylic yarn is used to weave the fabric body. During the knitting process, the knitting needles of the inner knitting mechanism synchronously and obliquely penetrate the fabric body, and the finished yarn is pulled and rotated in a manner that two outer needles correspond to one inner needle. The upper and lower layers are staggered to perform the knitting operation, so that the finished yarn and the expanded acrylic yarn are fused and knitted, and the finished yarn protrudes from the surface of the inner layer of the fabric body by at least 2 mm. The finished yarn connected between the two needles naturally bends downward to form a stacked pile structure that is staggered up and down;

[0020] The above-mentioned weaving operation is continued, and the processing operation of the laminated suede fabric is completed under the synchronous winding operation of the winding mechanism.

[0021] Furthermore, in the yarn production process, 55% functional polyester fiber, 25% modal fiber, and 20% elastic fiber are used to knit the yarn. The functional polyester fiber and elastic fiber are mixed with cotton bales, and then the functional polyester fiber and modal fiber are spun into strips. Typical functional polyester fibers include moisture-conducting and antibacterial polyester yarns, which increase the capillary effect of the polyester yarn and improve its breathability and moisture-conducting properties.

[0022] Furthermore, when the finished yarn is transported at the inner layer yarn feeding mechanism, the empty package of the yarn is transported to the knitting needle for cooperation, and the laminated suede structure of the finished yarn at the inner layer of the fabric body is an empty package structure.

[0023] Compared with existing technologies, this solution has the following advantages:

[0024] This scheme is a large circular knitting machine. An inner knitting component is arranged in the knitting component of a traditional large circular knitting machine to achieve the synchronous knitting operation of another set of functional yarns. The inner knitting component of this scheme penetrates the fabric obliquely outward and obtains the corresponding finished yarn from the inner layer yarn feeding mechanism. The finished yarn is supplemented and woven into the fabric to achieve special functionalization of the fabric. This scheme implements the synchronous knitting operation. While knitting and integrating the finished yarn, it does not interfere with the original fabric knitting operation and does not reduce the knitting efficiency.

[0025] By performing functional operations on the finished yarn, this invention can achieve the integration of different functions or feel on the fabric, such as the single-sided suede effect of this solution. At the same time, this solution adopts a 45-degree inclined knitting needle operation, which can make the suede produce an inclined soft feel and thermal insulation effect, and adopts a two-needle combined with one-needle knitting structure to achieve a staggered laminated suede fabric. Since the finished yarn is combined with the empty bag treatment, the suede feel can be greatly improved, and the subsequent operations such as napping or flocking are reduced, which greatly improves production efficiency.

[0026] The present invention relates to a process for processing laminated suede fabrics. By adopting yarns blended with elastic fibers and modal fibers and subjecting the yarns to an air bag treatment, the finished yarns are made to have a specific skin-friendly and soft feel. During the processing, a bevel puncture process is adopted. At the same time, since the length stroke of the knitting needles can be adjusted accordingly, the outward extension length of the finished yarn in the fabric can be controlled, thereby realizing the knitting operation of laminated suede fabrics with upper and lower dislocations of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the circular knitting machine of the preferred embodiment.

[0028] Figure 2 Schematic diagram of the internal winding mechanism of the circular knitting machine

[0029] Figure 3 This is a schematic diagram of the layout of the top wire feeding structure of the circular knitting machine.

[0030] Figure 4 This is a schematic diagram of the knitting mechanism layout of the circular knitting machine.

[0031] Figure 5 Schematic diagram of local weaving operation of the weaving structure.

[0032] Figure 6 This is a schematic diagram of another state operation of the weaving mechanism for partial weaving.

[0033] Figure 7 Schematic diagram of the fabric weaving structure.

[0034] Figure 8 This is a detailed diagram of the finished product of the laminated suede fabric in this solution. DETAILED DESCRIPTION

[0035] refer to Figures 1 to 4 A large circular knitting machine includes a fuselage 1 and a winding mechanism 11 arranged inside the fuselage 1. The main body of the fuselage 1 is a ring-shaped cavity structure. A control unit, a power supply, and power components are arranged on the side walls of the fuselage 1 for controlling the operation of the equipment. An annular outer ring knitting mechanism 21 is arranged on the top of the fuselage 1, and an inner ring knitting mechanism 22 is arranged inside the outer ring knitting mechanism 21. The inner ring knitting mechanism 22 is hoisted and installed through a door frame component 12. The outer ring knitting mechanism 21 and the inner ring knitting mechanism 22 are arranged in a concentric circle structure, with an annular gap left between the two. The gap is used to transport the woven fabric downward and be stored by the winding mechanism 11.

[0036] The winding mechanism 11 is arranged at the bottom of the interior of the machine body 1, and includes a V-shaped guide groove 13. A clamping and conveying component 14 is arranged below the guide groove 13, and a collecting roller 15 is arranged on the side of the clamping and conveying component. The guide groove 13, the clamping and conveying component 14 and the collecting roller 15 are connected through a winding motor 16 at the bottom of the frame, and rotate accordingly under the synchronous operation of the winding motor 16, thereby realizing the winding of the fabric and ensuring that the fabric maintains appropriate tension during the winding operation, making the fabric more stable and reliable during the weaving operation.

[0037] An inner wire feeding mechanism 33 and an outer wire feeding mechanism 34 are arranged on the gantry component 12. The outer wire feeding mechanism 34 is used to deliver the yarn to the knitting needles of the outer knitting mechanism 21, and the inner wire feeding mechanism 33 is used to deliver the yarn to the knitting needles of the inner knitting mechanism 22. The inner wire feeding mechanism 33 and the outer wire feeding mechanism 34 can feed different types of yarns simultaneously, increasing the diversity of the fabric, and by precisely controlling the yarn tension, ensure the stability of the yarn before entering the knitting mechanism. The inner wire feeding mechanism 33 can cooperate with the outer wire feeding mechanism 34 to provide additional yarn input, support the knitting of complex patterns, and can also process thicker or thinner yarns or yarns with complex structural combinations.

[0038] The main bodies of the inner and outer yarn feeding mechanisms 33 and 34 are both circular ring structures, with their exteriors connected to the yarn rack and yarn selection device. They can transport and select yarn according to the set knitting requirements and procedures, and connect the head and tail yarns during yarn changes. Because the inner ring knitting mechanism 22 knits obliquely, the inner yarn feeding mechanism 33 is arranged on the outer ring of the outer yarn feeding mechanism 34 and is positioned below the outer yarn feeding mechanism 34 to ensure stable and non-interfering yarn transportation.

[0039] refer to Figure 5 Figure 6 Figure 7 The outer ring knitting mechanism 21 is used to knit the main body of the fabric. It is similar to the structure of a traditional circular knitting machine and includes a ring-shaped needle disk and a plurality of knitting needles arranged on the needle disk. The knitting needles are controlled by the needle disk to perform orderly up and down knitting operations. Figure 7 A typical weaving operation is shown from left to right.

[0040] The main body of the inner circle knitting mechanism 22 is installed on the door frame component 12 by hoisting through structural parts and inner circle motors, and includes a guide needle frame 23 and a needle disk 24. Hall sensors are arranged on the needle disk 24 of the inner circle knitting mechanism 22 and the needle disk of the outer circle knitting mechanism 21, and ensure that the two needle disks are in a synchronous rotation working state. A plurality of knitting needles 25 corresponding to the outer circle knitting mechanism are arranged on the needle disk 24, which are arranged in a central column on the guide needle frame 23, and the knitting needles 25 are arranged at a 45-degree tilt. The control of the tilt is limited by the opening direction of the guide needle frame 23, and the knitting needles 25 are translated in the direction of the 45-degree angle. The knitting needles 25 pass through the weaving area of ​​the outer circle knitting mechanism 21 at the front end of the stroke, and receive the wire feeding operation of the inner layer wire feeding mechanism 33 on its outside, so that the fabrics are blended and woven with each other.

[0041] In order to realize the processing of laminated suede fabric, the outer circle knitting mechanism 21 and the inner circle knitting mechanism 22 both include a plurality of knitting needles arranged in a ring array. The number of knitting needles 25 of the inner circle knitting mechanism 22 is half the number of knitting needles of the outer circle knitting mechanism, and they are in an orderly and evenly aligned state to ensure that there is no interference when they are interlaced knitting.

[0042] In order to ensure the stable operation of knitting, the hook of the knitting needle 25 is arranged in a downward opening state, and the needle disk 24 of the inner knitting mechanism is a beveled disk structure, with a slide groove arranged on the outer circle, and the handle of the rear end of the knitting needle 25 is embedded in the slide groove. Figure 5 and Figure 6 Respectively represent Figure 7 The operating status of the first and ninth knitting needles from left to right.

[0043] refer to Figure 8 The present invention also includes a process for processing laminated suede fabrics, which is applied to the above-mentioned circular knitting machine and includes:

[0044] The fibers, elastane and modal, are blended to produce a yarn in which modal accounts for 65% and elastane 35%;

[0045] The yarn is treated with empty packages, with the spacing between the empty packages maintained at 2-3.5 mm, to produce the finished yarn. During the empty package treatment, the yarn is subjected to an orderly interval impact treatment with compressed air, so that the yarn at the impacted position becomes spherical and expands, which can improve the softness and fluffiness of the yarn;

[0046] The finished yarn is arranged at the inner layer yarn feeding mechanism of the circular knitting machine;

[0047] At the outer ring knitting mechanism, the fabric body is woven with expanded acrylic yarn. During the knitting process, the knitting needles of the inner ring knitting mechanism synchronously and obliquely penetrate the fabric body, and the finished yarn is pulled back and forth in a manner that the two outer ring needles correspond to the one inner ring needle. The upper and lower layers are staggered to perform the knitting operation, so that the finished yarn and the expanded acrylic yarn are fused and woven, and the finished yarn is made to protrude from the surface of the inner layer of the fabric body by at least 2 mm. The finished yarn connected between the two needles is naturally bent downward to construct a laminated pile structure that is staggered up and down. Figure 8 In the figure, the black lines represent the bulky acrylic yarn woven into the fabric body, and the red lines represent the upper and lower staggered laminated pile structure woven by the finished yarn;

[0048] The above-mentioned weaving operation is continued, and the processing operation of the laminated suede fabric is completed under the synchronous winding operation of the winding mechanism.

[0049] In some embodiments, the yarn production process uses 55% functional polyester fiber, 25% modal fiber, and 20% elastane fiber to knit the yarn. The functional polyester fiber and elastane fiber are mixed in cotton bales, and then the functional polyester fiber and modal fiber are separately spun into strips. Typical functional polyester fibers may include moisture-conducting and antibacterial polyester yarns, which enhance the capillary effect of the polyester yarns and improve their breathability and moisture-conducting properties.

[0050] In some embodiments, when the finished yarn is transported at the inner layer yarn feeding mechanism, the empty package of the yarn is transported to the knitting needle for cooperation, and the laminated suede structure of the finished yarn at the inner layer of the fabric body is made into an empty package structure.

[0051] In summary, the present invention provides a large circular knitting machine that arranges an inner knitting component within the knitting component of a conventional large circular knitting machine to achieve a synchronous knitting operation of another set of functional yarns. The inner knitting component of the present invention obliquely penetrates the fabric outward and obtains the corresponding finished yarn from the inner layer yarn feeding mechanism, thereby supplementing the knitting and fusing the finished yarn into the fabric, thereby achieving special functionalization of the fabric. The present invention implements a synchronous knitting operation, and while knitting and fusing the finished yarn, it does not interfere with the original fabric knitting operation and does not reduce the knitting efficiency.

[0052] By performing functional operations on the finished yarn, this invention can achieve the integration of different functions or feel on the fabric, such as the single-sided suede effect of this solution. At the same time, this solution adopts a 45-degree inclined knitting needle operation, which can make the suede produce an inclined soft feel and thermal insulation effect, and adopts a two-needle combined with one-needle knitting structure to achieve a staggered laminated suede fabric. Since the finished yarn is combined with the empty bag treatment, the suede feel can be greatly improved, and the subsequent operations such as napping or flocking are reduced, which greatly improves production efficiency.

[0053] The present invention relates to a process for processing laminated suede fabrics. By adopting yarns blended with elastic fibers and modal fibers and subjecting the yarns to an air bag treatment, the finished yarns are made to have a specific skin-friendly and soft feel. During the processing, a bevel puncture process is adopted. At the same time, since the length stroke of the knitting needles can be adjusted accordingly, the outward extension length of the finished yarn in the fabric can be controlled, thereby realizing the knitting operation of laminated suede fabrics with upper and lower dislocations of the components.

Claims

1. A circular knitting machine, characterized in that: The knitting machine comprises a body and a winding mechanism arranged inside the body. The body is an annular cavity structure. An outer knitting mechanism is arranged in an annular shape on the top of the body. An inner knitting mechanism is arranged inside the outer knitting mechanism. The inner knitting mechanism is hoisted and installed via a gantry component. The outer knitting mechanism and the inner knitting mechanism are arranged in a concentric circle structure with an annular gap between them. The gap is used to transport the woven fabric downward and to be stored by the winding mechanism. The outer ring knitting mechanism and the inner ring knitting mechanism both include a plurality of knitting needles arranged in a ring array, the number of knitting needles of the inner ring knitting mechanism is half the number of knitting needles of the outer ring knitting mechanism, and the knitting needles are in an orderly and uniformly aligned state; An inner layer wire feeding mechanism and an outer layer wire feeding mechanism are arranged on the gantry component. The outer layer wire feeding mechanism is used to convey the yarn to the knitting needles of the outer circle knitting mechanism, and the inner layer wire feeding mechanism is used to convey the yarn to the knitting needles of the inner circle knitting mechanism. The inner loop knitting mechanism includes a needle guide frame and a needle disk, wherein the plurality of knitting needles are arranged in a central row on the needle guide frame, and the front ends of the knitting needles are arranged in an inclined outward state; The knitting needles of the inner circle knitting mechanism are arranged at an angle of 45 degrees, and the hooks of the knitting needles are arranged in a downwardly open state.

2. A circular knitting machine according to claim 1, characterized in that: The main bodies of the inner layer wire feeding mechanism and the outer layer wire feeding mechanism are both circular ring structures, wherein the inner layer wire feeding mechanism is arranged on the outer ring of the outer layer wire feeding mechanism and is located below the outer layer wire feeding mechanism.

3. A circular knitting machine according to claim 1, characterized in that: The needle disc of the inner circle knitting mechanism is a beveled disc structure, with a slide groove arranged on the outer circle, and the handle at the rear end of the knitting needle is embedded in the slide groove.

4. A circular knitting machine according to claim 1, characterized in that: The inner layer yarn feeding mechanism has an automatic yarn changing function.

5. A circular knitting machine according to claim 1, characterized in that: An inner ring motor is arranged on the gantry component, which is used to drive the needle disk of the inner ring knitting mechanism to rotate. Hall sensors are arranged on the needle disk of the inner ring knitting mechanism and the needle disk of the outer ring knitting mechanism to ensure that the two needle disks are in a synchronous rotation working state.

6. A process for processing laminated suede fabrics, using a circular knitting machine according to any one of claims 1 to 5, characterized in that: include: The fibers, elastane and modal, are blended to produce a yarn in which modal accounts for 65% and elastane 35%; The yarn is treated with empty packages, with the spacing between the empty packages maintained at 2-3.5 mm, to produce finished yarn; The finished yarn is arranged at the inner layer yarn feeding mechanism of the circular knitting machine; At the outer knitting mechanism, expanded acrylic yarn is used to weave the fabric body. During the knitting process, the knitting needles of the inner knitting mechanism synchronously and obliquely penetrate the fabric body, and the finished yarn is pulled and rotated in a manner that two outer needles correspond to one inner needle. The upper and lower layers are staggered to perform the knitting operation, so that the finished yarn and the expanded acrylic yarn are fused and knitted, and the finished yarn protrudes from the surface of the inner layer of the fabric body by at least 2 mm. The finished yarn connected between the two needles naturally bends downward to form a stacked pile structure that is staggered up and down; The above-mentioned weaving operation is continued, and the processing operation of the laminated suede fabric is completed under the synchronous winding operation of the winding mechanism.

7. The process for processing laminated suede fabric according to claim 6, characterized in that: In the yarn making process, 55% functional polyester fiber, 25% modal fiber and 20% elastic fiber are used to knit the yarn, and the functional polyester fiber and elastic fiber cotton bale are mixed, and then the functional polyester fiber and modal fiber are spun into strips separately.

8. The process for processing laminated suede fabric according to claim 6, characterized in that: When the finished yarn is transported at the inner layer yarn feeding mechanism, the empty package of the yarn is transported to the knitting needle for matching, and the laminated suede structure of the finished yarn at the inner layer of the fabric body is an empty package structure.

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