Circular knitting machine and laminated suede fabric processing technology

Abstract

The circular knitting machine comprises a machine body and a winding mechanism arranged in the machine body, the main body of the machine body is of an annular cavity structure, an outer ring knitting mechanism is annularly arranged at the top of the machine body, an inner ring knitting mechanism is arranged in the outer ring knitting mechanism, and the inner ring knitting mechanism is arranged in the inner ring knitting mechanism. The inner ring knitting mechanism is installed in a hoisting mode through a portal component, the outer ring knitting mechanism and the inner ring knitting mechanism are arranged in a concentric circle structure, an annular gap is reserved between the outer ring knitting mechanism and the inner ring knitting mechanism, and the gap is used for conveying woven fabric downwards and storing the woven fabric by the winding mechanism; each of the outer ring knitting mechanism and the inner ring knitting mechanism comprises a plurality of knitting needles which are arranged in an annular array, the number of the knitting needles of the inner ring knitting mechanism is half of that of the knitting needles of the outer ring knitting mechanism, and the knitting needles are in an orderly and uniformly aligned state.

Description

Technical Field

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

[0002] Circular knitting machine, scientifically known as circular weft knitting machine (or circular weft knitting machine), has developed rapidly because of its multiple loop forming systems (called yarn feeding paths or loop forming paths in enterprises, referred to as paths), high speed, high output, fast pattern change, good fabric quality, few processes 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 circularly arranged up and down reciprocating knitting needles for knitting operations. When processing complex knitting patterns and multi-yarn mixed knitting, the flexibility is insufficient. 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 implement the above purpose, the technical solution of the present invention is as follows: A large circular knitting machine comprises a machine body and a winding mechanism arranged inside the machine body, wherein the machine body main body is an annular cavity structure, an outer ring knitting mechanism is arranged in an annular shape on the top of the machine body, an inner ring knitting mechanism is arranged inside the outer ring knitting mechanism, the inner ring knitting mechanism is hoisted and installed through a door frame component, the outer ring knitting mechanism and the inner ring knitting mechanism are arranged in a concentric circle structure, and an annular gap is left between the two, and the gap is used to convey the woven fabric downward and be stored by the winding mechanism; The outer circle knitting mechanism and the inner circle knitting mechanism both include a plurality of knitting needles arranged in a ring array, the number of the knitting needles of the inner circle knitting mechanism is half the number of the knitting needles of the outer circle knitting mechanism, and 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 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.

[0006] 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.

[0007] Furthermore, the inner circle knitting mechanism includes a needle guide frame and a needle disk, and the plurality of knitting needles are arranged in a central row on the needle guide frame, with the front ends of the knitting needles being arranged in an inclined outward state.

[0008] Furthermore, 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.

[0009] 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.

[0010] Furthermore, the inner layer yarn feeding mechanism has an automatic yarn changing function.

[0011] Furthermore, an inner circle motor is arranged on the gantry component, and the inner circle motor is used to drive the needle disk of the inner circle knitting mechanism to rotate. Hall sensors are arranged at the needle disk of the inner circle knitting mechanism and the needle disk of the outer circle knitting mechanism, and ensure that the two needle disks are in a synchronous rotation working state.

[0012] A process for processing laminated suede fabric, applied to the above circular knitting machine, comprising: The fiber elastic fiber and modal fiber are blended to make a yarn, wherein the modal fiber accounts for 65% and the elastic fiber accounts for 35%; The yarn is treated with empty packages, and the spacing between the empty packages is 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 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 and rotated in a manner that two outer ring needles correspond to 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 knitted, and the finished yarn is protruded 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 fluff structure 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.

[0013] Furthermore, in the yarn making process, 55% of functional polyester fiber, 25% of modal fiber and 20% of elastic fiber are used to knit the yarn, and a method of mixing functional polyester fiber and elastic fiber cotton bales is adopted, 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 increase the capillary effect of polyester yarns and improve the air permeability and moisture-conducting effects of polyester yarns.

[0014] 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 made into an empty package structure.

[0015] Compared with the existing technology, this solution has the following advantages: The present invention relates to a large circular knitting machine, in which an inner ring knitting component is arranged in the knitting component of a traditional large circular knitting machine, so as to realize the synchronous knitting operation of another group of functional yarns, and the inner ring making component of the present invention obliquely penetrates the fabric outward and obtains the corresponding finished yarn from the inner layer yarn feeding mechanism, so as to realize the supplementary knitting and fusing of the finished yarn in the fabric, and realize the special functionality of the fabric, and the present invention implements the synchronous knitting operation, and while knitting and fusing the finished yarn, it will not interfere with the original knitting operation of the fabric, and will not reduce the knitting efficiency; By performing functional operations on the finished yarn, the present invention can achieve the integration of different functions or hand feelings on the fabric, such as the single-sided suede effect of the present invention. At the same time, the present invention adopts a 45-degree inclined knitting needle operation, which can make the suede produce an inclined soft hand feeling and a heat preservation effect, and adopts a knitting structure of two needles with one needle to achieve a dislocated laminated suede fabric. Since the finished yarn is combined with an empty bag treatment, the suede hand feeling can be greatly improved, and the subsequent need for napping or flocking operations can be reduced, which greatly improves the production efficiency; The present invention discloses a processing technology for laminated suede fabrics. By adopting yarns blended with elastic fibers and modal fibers and performing an air bag treatment on the yarns, the finished yarns 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 needle can be adjusted accordingly, the outward extension length of the finished yarn on 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

[0016] Figure 1 It is a schematic diagram of the overall structure of a circular knitting machine according to a preferred embodiment.

[0017] Figure 2 This is a schematic diagram of the internal winding mechanism structure of the circular knitting machine.

[0018] Figure 3 This is a schematic diagram of the layout of the top wire feeding structure of the circular knitting machine.

[0019] Figure 4 This is a schematic diagram of the knitting mechanism layout of the circular knitting machine.

[0020] Figure 5 It is a schematic diagram of the local weaving operation of the weaving structure.

[0021] Figure 6 This is a schematic diagram of another state operation of the weaving mechanism for partial weaving.

[0022] Figure 7 Schematic diagram of the structure of fabric weaving.

[0023] Figure 8 This is a detailed diagram of the finished product of the laminated suede fabric of this solution. DETAILED DESCRIPTION

[0024] refer to Figures 1 to 4 A large circular knitting machine comprises a machine body 1 and a winding mechanism 11 arranged inside the machine body 1. The main body of the machine body 1 is an annular cavity structure. The side walls of the machine body 1 are provided with units such as a control unit, a power supply and a power component for controlling the operation of the equipment. An annular outer ring knitting mechanism 21 is arranged on the top of the machine body 1. 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, and an annular gap is left between the two. The gap is used to convey the woven fabric downward and be received and stored by the winding mechanism 11.

[0025] 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, so as to realize the winding of the fabric and ensure that the fabric maintains appropriate tension during the winding operation, so that the fabric is more stable and reliable during the weaving operation.

[0026] An inner wire feeding mechanism 23 and an outer wire feeding mechanism 24 are arranged on the gantry component 12. The outer wire feeding mechanism 24 is used to deliver the yarn to the knitting needles of the outer knitting mechanism 21, and the inner wire feeding mechanism 23 is used to deliver the yarn to the knitting needles of the inner knitting mechanism 22. The inner wire feeding mechanism 23 and the outer wire feeding mechanism 24 can feed different types of yarns at the same time, increasing the diversity of the fabric, and by accurately controlling the yarn tension, the stability of the yarn before entering the knitting mechanism is ensured, wherein the inner wire feeding mechanism 23 can cooperate with the outer wire feeding mechanism 24 to provide additional yarn input, support the knitting of complex patterns, and can also handle thicker or thinner yarns or yarns with complex structural combinations.

[0027] The main bodies of the inner layer wire feeding mechanism 23 and the outer layer wire feeding mechanism 24 are both circular ring structures, and the yarn rack and the yarn selection device are connected to the outside thereof, and the yarn can be transported and selected according to the set weaving requirements and procedures, and the connection operation of the head and tail yarns can be realized when the yarn is replaced. Since the inner circle weaving mechanism 22 is woven by oblique penetration, the inner layer wire feeding mechanism 23 is arranged on the outer circle of the outer layer wire feeding mechanism 24 and is located below the outer layer wire feeding mechanism 24, so as to realize its stable and non-interfering yarn transport operation.

[0028] 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, including 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 braided hype is shown from left to right.

[0029] The main body of the inner circle knitting mechanism 22 is installed on the door frame component 12 by means of a hoisting method through structural parts and an inner circle motor, 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 row on the guide needle frame 24, and the knitting needles 24 are arranged at a 45-degree inclination. The control of the inclination 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 opening 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 23 on its outside, so that the fabrics are interwoven and woven with each other.

[0030] 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.

[0031] In order to ensure stable knitting operation, the hook of the knitting needle 25 is arranged in a downward opening state, and the needle disk 23 of the inner circle knitting mechanism is a beveled disk structure, with a slide groove arranged in 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.

[0032] refer to Figure 8 The present invention also includes a laminated suede fabric processing technology, which is applied to the above-mentioned large circular knitting machine, including: The fiber elastic fiber and modal fiber are blended to make a yarn, wherein the modal fiber accounts for 65% and the elastic fiber accounts for 35%; The yarn is treated with empty packages, and the spacing between the empty packages is kept at 2-3.5 mm to make the finished yarn. During the empty package treatment, the yarn is subjected to orderly interval impact treatment with compressed air, so that the yarn at the impacted position is spherical and expanded, which can improve the softness and fluffiness of the yarn; The finished yarn is arranged at the inner layer yarn feeding mechanism of the circular knitting machine; At the outer circle knitting mechanism, expanded acrylic yarn is used to weave the fabric body. During the weaving process, the knitting needles of the inner circle knitting mechanism synchronously and obliquely penetrate the fabric body, and the finished yarn is pulled and rotated in a way that the two outer circle needles correspond to the one inner circle needle. The upper and lower layers are staggered to perform the weaving 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 fluff structure that is staggered up and down. Figure 8 In the figure, the black lines represent the fabric body woven from the expanded acrylic yarn, and the red lines represent the stacked pile structure woven from the finished yarn in an interlaced manner; 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.

[0033] In some embodiments, 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 the elastic fiber cotton bale are mixed, and then the functional polyester fiber and the modal fiber are separately spun into strips. Typical functional polyester fibers may include moisture-conducting and antibacterial polyester fibers, which increase the capillary effect of the polyester fibers and improve the air permeability and moisture-conducting effects of the polyester fibers.

[0034] 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.

[0035] In summary, the present invention is a large circular knitting machine, in which an inner ring knitting component is arranged in the knitting component of a traditional large circular knitting machine, so as to realize the synchronous knitting operation of another group of functional yarns, and the inner ring making component of the present invention obliquely penetrates the fabric outward and obtains the corresponding finished yarn from the inner layer yarn feeding mechanism, so as to realize the supplementary knitting and fusing of the finished yarn in the fabric, and realize the special functionality of the fabric, and the present invention implements the synchronous knitting operation, and while knitting and fusing the finished yarn, it will not interfere with the original knitting operation of the fabric, and will not reduce the knitting efficiency; By performing functional operations on the finished yarn, the present invention can achieve the integration of different functions or hand feelings on the fabric, such as the single-sided suede effect of the present invention. At the same time, the present invention adopts a 45-degree inclined knitting needle operation, which can make the suede produce an inclined soft hand feeling and a heat preservation effect, and adopts a knitting structure of two needles with one needle to achieve a dislocated laminated suede fabric. Since the finished yarn is combined with an empty bag treatment, the suede hand feeling can be greatly improved, and the subsequent need for napping or flocking operations can be reduced, which greatly improves the production efficiency; The present invention discloses a processing technology for laminated suede fabrics. By adopting yarns blended with elastic fibers and modal fibers and performing an air bag treatment on the yarns, the finished yarns 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 needle can be adjusted accordingly, the outward extension length of the finished yarn on 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 large circular knitting machine, Features: It comprises a fuselage and a winding mechanism arranged inside the fuselage, wherein the fuselage main body is an annular cavity structure, an outer ring knitting mechanism is arranged in an annular shape on the top of the fuselage, an inner ring knitting mechanism is arranged inside the outer ring knitting mechanism, the inner ring knitting mechanism is hoisted and installed through a door frame component, the outer ring knitting mechanism and the inner ring knitting mechanism are arranged in a concentric circle structure, and an annular gap is left between the two, and the gap is used to transport the woven fabric downward and be stored by the winding mechanism; The outer circle knitting mechanism and the inner circle knitting mechanism both include a plurality of knitting needles arranged in a ring array, the number of the knitting needles of the inner circle knitting mechanism is half the number of the knitting needles of the outer circle knitting mechanism, and 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 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.

2. A circular knitting machine according to claim 1, Features: 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, Features: The inner circle knitting mechanism comprises a needle guide frame and a needle disk. 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.

4. A circular knitting machine according to claim 3, Features: 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.

5. A circular knitting machine according to claim 3, Features: The needle disc of the inner circle knitting mechanism is a beveled disc 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.

6. A circular knitting machine according to claim 1, Features: The inner layer yarn feeding mechanism has an automatic yarn changing function.

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

8. A process for processing laminated suede fabrics, applied to the above-mentioned large circular knitting machine, Features: include: The fiber elastic fiber and modal fiber are blended to make a yarn, wherein the modal fiber accounts for 65% and the elastic fiber accounts for 35%; The yarn is treated with empty packages, and the spacing between the empty packages is kept 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 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 and rotated in a manner that two outer ring needles correspond to 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 knitted, and the finished yarn is protruded 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 fluff structure 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.

9. A process for processing laminated suede fabric according to claim 8, Features: 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.

10. A process for processing laminated suede fabric according to claim 8, Features: 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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