CN114318647B - Method for manufacturing exchange plating yarn feeding device and anti-loose weft knitting exchange plating jacquard fabric - Google Patents

Abstract

The invention relates to an exchange plating yarn feeding device of a weft knitting circular knitting machine looping system, which comprises three air valves, a reset spring and yarn guiding fingers; the air valve and the reset spring are mutually matched to determine the in-out of the yarn guide finger, so that the distance between the yarn guide hole at the front end of the yarn guide finger and the knitting needle is changed, and the size of the yarn filling transverse angle alpha is changed. The invention also discloses a manufacturing method of the anti-drop loose weft-knitted exchange plating jacquard fabric. The invention adopts weft plain as basic structure, adds an exchange plating yarn feeding device in the original weft knitting four-needle-way single-sided large circular knitting machine looping system, three yarns are simultaneously fed into the looping system, and the exchange plating is carried out by controlling the size of the three yarn-guiding finger-pad transverse angles by a control system, so as to realize the preparation of the anti-drop loose weft knitting exchange plating jacquard fabric. The invention overcomes the defect that the existing exchange plating fabric has no elasticity and is easy to break off, and can perfectly solve the phenomena of yarn break, yarn drawing and hemming caused by scraping, cutting or repeated stretching of common spandex.

Description

Exchange Plating Feeding Device and Fabrication Method of Exchange Plating Jacquard Fabric for Weft Knitting

technical field

The invention relates to the technical field of knitted fabric production, in particular to a method for manufacturing a knitted weft-knitted anti-scattering exchange-plating jacquard fabric and an exchange-plating yarn feeding device used in the method.

Background technique

Weft-knitted fabrics are soft in texture, have greater extensibility and elasticity, and are widely used in the production fields of underwear, tights and sportswear. But it still has some defects, its dimensional stability is poor, and it is prone to detachment and curling. At present, the existing technology cannot effectively solve this problem.

There are two types of weft-knitting plated structures: all coils plated and partial coils plated. The patent of the present invention is aimed at all coils plated structures. The feature of all-coil plating is that all the loops in the fabric are overlapped by two loops, and one side of the fabric is exposed by one yarn, and the other side is exposed by the other yarn.

The traditional weft-knitting exchange-plating weave is woven on a weft-knitting four-needle track single-sided circular knitting machine. All loops are composed of two yarns. Although the yarn weave improves the wearing performance of the fabric to a certain extent, the pattern is single, and it needs to be printed and other processes in the post-finishing process to obtain the pattern, which increases the production cost, and the fabric has no elasticity and is easy to fall off.

Contents of the invention

The technical problem to be solved by the present invention is to provide a new exchange plating yarn feeding device for the above-mentioned deficiencies in the prior art, which can realize the production of weft knitting single-side exchange plating on a weft knitting four-needle track single-side circular knitting machine. The jacquard fabric overcomes the defects and deficiencies of the existing single-side jacquard fabrics such as simple pattern structure, little change, and limited design.

Another technical problem to be solved by the present invention is to provide a knitting system of a weft knitting four-needle track single-sided large circular knitting machine using the aforementioned exchange plating yarn feeding device.

Another technical problem to be solved by the present invention is to provide a manufacturing method for weft knitting exchange plating jacquard fabrics using the aforementioned exchange plating yarn feeding device and weft knitting four-needle single-sided circular knitting system.

The technical problem to be solved by the present invention is achieved through the following technical solutions. The present invention is an exchanging plaiting and feeding device for the knitting system of a large circular knitting machine, which is characterized in that it includes three air valves, a guide finger support, and the right ends of three return springs are respectively fixed on the three guide fingers. At the front end, the left ends of the three return springs are respectively fixed on the right end of the yarn guide finger bracket, and the three yarn guide fingers are respectively inserted in the yarn guide finger bracket. The distance between the yarn guide hole and the knitting needle changes, thereby changing the size of the transverse angle α of the lapping yarn; the base of the exchange plating yarn feeding device is fixed on the sinker bed of the machine, and the anti-needle backlash baffle is fixed on the exchange plating Yarn special device base.

The exchange plating yarn feeding device described in the present invention, its further preferred technical scheme is: the colored yarn A, the colored yarn B, and the low-temperature thermally bonded spandex C are respectively worn in the corresponding yarn guide holes of the three yarn guide fingers; One air valve is closed, the yarn guide finger at the corresponding position is far away from the knitting needle, and the low-temperature thermally bonded spandex C worn in the corresponding yarn guide hole is inserted into the knitting needle to form a ground yarn, which is fixed; at this time, the other two air valves are opened to push The guide finger at the corresponding position moves radially toward the inner side of the needle cylinder, so that the return spring is tensioned, the guide finger approaches the knitting needle, and the colored yarn A and colored yarn B in the corresponding guide hole are inserted into the knitting needle to form veil 1 and yarn B respectively. veil2.

The exchange plating yarn feeding device of the present invention, its further preferred technical scheme is: when pattern data is designed pattern diagram, ground yarn is low-temperature heat-bonded spandex C, and veil is in colored yarn A and B according to pattern requirement Arbitrary transformation, using different color blocks to distinguish and exchange the coverage areas of different colored yarns in the plating weave.

The further preferable technical solution of the exchange plating yarn feeding device of the present invention is: control the opening and closing of the air valve according to the pattern data file, thereby changing the laying angles α _A , α _B and α _C of the colored yarns , A color yarn is used as veil 1, B color yarn is used as veil 2, and the corresponding air valve is opened, and low-temperature thermally bonded spandex C is used as the ground yarn, and the corresponding air valve is closed; otherwise, B color yarn is used as veil 1, and A color yarn is used as veil 2. Then the corresponding air valve is opened, and the low-temperature thermally bonded spandex C is used as the ground yarn, and the corresponding air valve is closed to realize the exchange plating operation.

The invention also discloses a weft knitting system with four needle tracks and a single-sided circular knitting machine, which is characterized in that: the knitting system includes the exchange plating yarn feeding device described in any one of the above technical solutions, and also includes a control system The control system includes an encoder connected to the main shaft. After obtaining the synchronous signal of the knitting needle, the encoder sends the signal to the main controller for processing, and the main controller outputs the selection or non-selection of the corresponding air valve according to the pattern file data. Select to generate a control signal, transmit the control signal to the driving circuit, and the driving circuit drives the special device for exchanging yarn plating to execute the jacquard information.

The present invention also discloses a manufacturing method of an anti-loose weft knitting exchange plating jacquard fabric, which is characterized in that the specific steps are as follows:

(1) Yarn threading configuration: each knitting system is fed with two colored yarns A and B and low-temperature thermally bonded spandex C. Yarns A, B, and C have different laying angles, and low-temperature thermally bonded spandex C As the ground yarn, the colored yarn A is used as the veil 1, and the colored yarn B is used as the veil 2 to cover the ground yarn C; The laying angle of the yarn makes the colored yarn B become a veil 1, and the colored yarn A becomes a veil 2 to cover the ground yarn C;

(2) Pattern data: in the design software for exchange plating jacquard fabric, design the pattern data information according to the needs, use different colors to distinguish A color yarn as veil 1 covering ground yarn C area and B color yarn as veil 1 covering ground yarn Area C: convert the pattern data information into a computer file that can control the work of the yarn guide fingers, so as to control the covering relationship of the colored yarn in the actual weaving process;

(3) Weaving on the machine: Import the file on the machine to the control system of the machine, and exchange the plating and feeding device to control the radial movement of the yarn guide finger along the needle cylinder according to the information on the machine file, so as to realize the change of the laying width of the yarn guide finger. Angle so as to achieve the purpose of exchanging plating and weaving the designed jacquard fabric;

(4) Finishing: After the fabric is off the machine, the finished fabric with anti-separation weft knitting and plating jacquard is obtained through the finishing process.

The principle of the present invention is to use the weft flat needle as the basic structure, rely on the triangular needle selection to determine the knitting needle, carry out the transformation on the basis of the original weft knitting four-needle track single-sided circular knitting machine, and install an exchange plating for each knitting system. Yarn feeding device, add a spandex yarn guide finger to the existing exchange plating device with two yarn guide fingers, and insert low-temperature thermally bonded spandex as the ground yarn, which is fixed, and the other two yarn guide fingers Wear two kinds of colored yarns as veil 1 and veil 2 respectively, and feed the three kinds of yarns into the knitting system at the same time, and rely on the control system to control the size of the transverse angle of the three yarn guide fingers to exchange and plate the yarn to realize the exchange of weft knitting to prevent loosening Preparation of Plated Jacquard Fabrics.

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

1. The exchange plating yarn feeding device of the present invention is equipped with three yarn guide fingers. Compared with the existing exchange plating yarn feeding device with two yarn guide fingers, a low temperature thermally bonded spandex yarn guide finger is added , can add low-temperature thermally bonded spandex with excellent thermal stability and elasticity, which overcomes the shortcomings of ordinary spandex that are easy to curl and defilament after being scratched and cut; solves the shortcomings of the original exchange-plating design fabric without elasticity.

2. The present invention installs exchange plating yarn feeding device and control system on each knitting system of weft knitting four-needle track single-sided circular knitting machine, and the control system controls the yarn-guiding fingers according to the pattern data information provided by the jacquard fabric design software. Along the radial movement of the needle cylinder, the weft-knitted single-side exchange plating jacquard fabric is produced on the weft-knitting four-needle track single-side circular knitting machine, which overcomes the defects of the existing single-side jacquard fabrics such as simple structure, small change, and limited design. insufficient. In the weaving process, the low-temperature thermally bonded spandex is used as the ground yarn, which remains unchanged; the two colored yarns are used as the veil 1 and the veil 2 respectively according to the pattern requirements (the veil 1 is covered on the top of the veil 2), and the two can be exchanged according to the pattern requirements. The relative positions of the dyed yarns on the front and back of the fabric, the single-sided jacquard fabric produced has unlimited pattern size, uniform and stable structure, simple finishing process, and reduced production costs.

3. The present invention can realize the preparation of fabrics on a weft knitting four-needle single-sided circular knitting machine without special equipment. It only needs to modify the existing equipment to produce anti-loosening weft knitting exchange plating jacquard fabrics. The modification process Simple and low cost. The pattern can be freely designed according to the pattern requirements, and its formation is not achieved by needle selection but by the mutual exchange of yarns, which overcomes the shortcomings of the limited size of jacquard patterns produced on computerized jacquard single-sided circular knitting machines.

4. The method of the present invention adds low-temperature heat-bonded spandex as the ground yarn, and the fabric has more excellent elasticity and thermal stability, and the structure of the fabric is uniform and stable, and can be cut at will during the sewing process without overlaying, which greatly reduces sewing hem Defects that are too heavy; the prepared fabric has excellent anti-scattering properties, random cutting and non-curling characteristics. In the post-processing process, only simple washing and shaping are required, which improves production efficiency, reduces post-processing procedures, reduces production costs, and reduces environmental pollution. It also overcomes the shortcomings of the existing exchange-plating fabrics, which are inelastic and easy to fall apart, and can perfectly solve the phenomenon of thread falling, spinning and curling caused by scratching, cutting or repeated stretching of ordinary spandex.

Description of drawings

Fig. 1 is the schematic diagram of exchange plating threading position relation;

Fig. 2 Schematic diagram of the front view of the exchange plating yarn feeding device;

Fig. 3 Schematic diagram of the top view of the exchange plating yarn feeding device;

Fig. 4 Schematic diagram of exchanging plating coils;

Fig. 5 The control system and control flow chart of the exchange plating yarn feeding device.

Detailed ways

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the description of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Figure 1 is a schematic diagram of the positional relationship between exchanged plating and threading. Each knitting system is fed with three colored yarns A, B, and C. The colored yarns A, B, and C have different laying angles, and the colored yarn C is The low-temperature heat-bonded spandex is fixed as the ground yarn, and the dyed yarn A is covered as the ground yarn C as the veil 1. When it is necessary to exchange plating and jacquard, the control system controls the guide fingers according to the pattern file to change the lapping angle of A and B yarns so that colored yarn B becomes veil 1 and covers ground yarn C.

Figure 2 and Figure 3 are respectively the front view and top view of the exchange plating yarn feeding device schematic diagram, Figure 4 is the exchange plating coil schematic diagram, the black thick coil area represents A color yarn as veil 1 and B color yarn as veil 2 Cover the ground yarn C area, the black coil area means that the B color yarn is the veil 1, and the A color yarn is the veil 2 covering the ground yarn C area. Fig. 5 is the control system and control flow chart of the exchange plating yarn feeding device.

The exchange plating yarn feeding device includes three air valves 1, 1', 1'', yarn guiding finger support 2, and the right ends of three return springs 3, 3', 3'' are respectively fixed on three yarn guiding fingers 4, The front ends of 4', 4'', the left ends of the three return springs 3, 3', 3'' are respectively fixed on the right end of the guide finger support 2, and the three guide fingers 4, 4', 4'' are respectively inserted in the In the guide finger support 2, the air valves 1, 1', 1'' and the return springs 3, 3', 3'' cooperate with each other to determine the entry and exit of the guide fingers 4, 4', 4'', so that the guide fingers 4 _. The low-temperature thermally bonded spandex in the upper yarn guide hole is the ground yarn, and the dyed yarn on the guide finger of α _A ( α _B ) with a small transverse angle of the laying yarn is the plating yarn, which is the veil 1. The base 10 of the exchange plating and feeding device is fixed on the machine sinker bed table 11 by screws 9, and the anti-latch kickback baffle 7 is fixed on the base 10 of the exchange plating special device by screws 8.

In the exchange plating yarn feeding device: A color yarn is worn in the yarn guide hole 5, a B color yarn is worn in the yarn guide hole 5', and a C color yarn is worn in the yarn guide hole 5''; when the air valve 1 is opened, push the guide The yarn finger 4 moves radially to the inner side of the needle cylinder 12, so that the return spring 3 is tensioned, the yarn guide finger 4 is close to the knitting needle 6, and the colored yarn A in the yarn guide hole 5 is inserted into the knitting needle 6 to form a veil 1 and an air valve 1 The same is true for 'opening, the colored yarn B in the yarn guide hole 5' is inserted into the knitting needle 6 to form the veil 2, at this time the air valve 1'' is closed, and the colored yarn C is inserted into the knitting needle 11 to form the ground yarn; vice versa, Colored yarn B is used as veil 1, colored yarn A is used as veil 2, and colored yarn C is used as ground yarn to form a new decorative pattern. The distance between the exchange plating yarn feeding device base 10 and the yarn guide finger support 2 determines the adjustment range of the transverse angle α of the laying yarn, which can be set as required.

Regarding the pattern data file, when designing the pattern diagram, different color blocks can be used to distinguish the coverage areas of different colored yarns in the exchange plating weave. Control the opening and closing of the air valve according to the pattern data file, thereby changing the laying angles α _A , α _B and α _C of the three colored yarns. The A colored yarn and the B colored yarn are used as veils to open the corresponding air valve, and the C colored yarn As a ground yarn, the corresponding air valve is closed, and vice versa, to achieve the purpose of exchanging plating.

The control system of the knitting system of the weft knitting four-needle track single-sided circular knitting machine includes an encoder 14 connected to the main shaft to obtain the synchronization signal of the knitting needles 6, and the encoder 14 sends the signal to the main controller 15 for processing, and the main controller according to The output of the pattern file data corresponds to the opening or closing of the air valve to generate a control signal, and the control signal is transmitted to the drive circuit 16, and the drive circuit 16 drives the special device for exchanging and plating to execute the jacquard information.

The steps of the production method of the weft-knitted single-side exchange plating jacquard fabric are as follows:

The first step, threading configuration: as shown in Figure 3, each knitting system is fed with three colored yarns A, B, and C, and the A, B, and C yarns have different laying angles, and the colored yarn A is used as the Bit veil 1 covers ground yarn C. When jacquard is required, the computer of the machine controls the guide fingers according to the pattern file to change the laying angle of colored yarn A and colored yarn B so that colored yarn B becomes veil 1 and covers ground yarn C.

The second step, pattern data: In the design software of exchange plating jacquard fabric, design the pattern data information according to the needs, and use different colors to distinguish A color yarn as veil 1 covering ground yarn C area and B color yarn as veil 1 covering ground Yarn C area. As shown in Figure 4, the black thick loop area means that the A color yarn is the veil 1, the B color yarn is the veil 2 covering the ground yarn C area, and the black coil area means that the B color yarn is the veil 1, and the A color yarn is the veil 2 covering the ground yarn C area. Converting the pattern data information into the computer file that can control the work of the yarn guide fingers can control the covering relationship of the colored yarn in the actual weaving process.

The third step, weaving on the machine: import the file on the machine to the control system of the machine, exchange the yarn plating and feeding device to control the radial movement of the yarn guide finger along the needle cylinder according to the information on the machine file, and realize the change of the padding of the yarn guide finger In order to achieve the purpose of exchanging plating at the horizontal angle, weave the designed anti-loosening weft knitting exchange plating jacquard fabric.

The fourth step, after the fabric is off the machine, the fabric is washed and shaped and other simple finishing processes to obtain the anti-scattering exchange plating jacquard finished fabric.

Claims (3)

1. An exchanging plaiting yarn feeding device for the knitting system of a large circular knitting machine, characterized in that: it comprises three air valves, a guide finger support, and the right ends of the three return springs are respectively fixed on the front ends of the three guide fingers , the left ends of the three return springs are respectively fixed on the right end of the yarn guide finger bracket, and the three yarn guide fingers are respectively inserted in the yarn guide finger bracket, the air valve and the return spring cooperate with each other to determine the entry and exit of the yarn guide finger, so that the front end of the yarn guide finger The distance between the yarn guide hole and the knitting needle changes, thereby changing the size of the laying transverse angle α; the base of the exchange plating yarn feeding device is fixed on the sinker bed of the machine, and the anti-latch backlash baffle is fixed on the exchange plating On the base of the special device; the corresponding yarn guide holes of the three yarn guide fingers are threaded with colored yarn A, colored yarn B, and low-temperature thermally bonded spandex C; when designing pattern diagrams based on pattern data, the ground yarn is low-temperature thermally bonded spandex C. The veil is arbitrarily changed between the colored yarns A and B according to the pattern requirements, and different color blocks are used to distinguish and exchange the covered areas of different colored yarns in the plating organization; the opening and closing of the air valve is controlled according to the pattern data file, thereby changing the three colored yarns Laying yarn transverse angles αA, αB and αC; colored yarn A is used as veil 1, and colored yarn B is used as veil 2, which corresponds to the opening of the air valve, and low-temperature thermally bonded spandex C is used as the ground yarn, which corresponds to the closing of the air valve; otherwise, colored yarn B is used as Veil 1 and colored yarn A are used as veil 2, and the corresponding air valve is opened, and low-temperature thermally bonded spandex C is used as the ground yarn, and the corresponding air valve is closed to realize the exchange plating operation. 2. A knitting system of a weft knitting four-needle track single-sided large circular knitting machine, characterized in that: the knitting system comprises the exchanging and plating yarn feeding device described in claim 1, and also includes a control system; the control system includes The encoder connected to the main shaft, after obtaining the synchronous signal of the knitting needle, the encoder sends the signal to the main controller for processing, and the main controller generates a control signal according to the selection or non-selection of the corresponding air valve according to the pattern file data, and will control The signal is transmitted to the driving circuit, and the driving circuit drives the special device for exchanging and plating to execute the jacquard information. 3. A kind of manufacture method of anti-loose weft knitting exchange plating jacquard fabric, it is characterized in that, its concrete steps are: (1) Yarn threading configuration: Each knitting system is fed with two colored yarns A and B and low-temperature thermally bonded spandex C. A, B, and C yarns have different laying angles, and low-temperature thermally bonded spandex C As the ground yarn, the colored yarn A is used as the veil 1, and the colored yarn B is used as the veil 2 to cover the ground yarn C; The laying angle of the yarn makes the colored yarn B become a veil 1, and the colored yarn A becomes a veil 2 to cover the ground yarn C; (2) Pattern data: In the design software for exchange plating jacquard fabrics, design pattern data information according to needs, and use different colors to distinguish A color yarn as veil 1 covering ground yarn C area and B color yarn as veil 1 covering ground yarn Area C: convert the pattern data information into a computer file that can control the work of the yarn guide fingers, so as to control the covering relationship of the colored yarn in the actual weaving process; (3) Weaving on the machine: Import the file on the machine to the control system of the machine, and exchange the plating yarn feeding device to control the radial movement of the yarn guide finger along the needle cylinder according to the information on the machine file, so as to realize the change of the laying width of the yarn guide finger. Angle so as to achieve the purpose of exchanging plating and weaving the designed jacquard fabric; (4) After-finishing: After the fabric is off the machine, the finished fabric with anti-scattering weft-knitted exchange plating jacquard is obtained through the post-finishing process.

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