Multi-stage after-finishing device for knitted fabric

Abstract

The invention relates to the technical field of textile equipment, in particular to a multi-stage after-finishing device for knitted fabric. The multi-stage after-finishing device comprises a pair of double-opening extension threaded rollers, an infrared weft twill road detection device, two pairs of single-opening threaded rollers and an ironing and shaping assembly which are sequentially arranged in the motion direction of the knitted fabric at intervals. The driving assembly is used for driving the single thread roller to rotate and is electrically connected with the infrared weft twill road detection device; threads emitted from the middle section of the rolling shaft to the two ends are arranged on the surface of the double-opening extension threaded roller; and the thread directions of the two pairs of single thread rollers are opposite. According to the multi-stage after-finishing device for the knitted fabric, the functions of cloth cover extension, weft twill road detection, weft skew elimination, ironing and shaping and winding are integrated, and the after-finishing path of the knitted fabric is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of textile equipment, and in particular to a multi-stage finishing device for knitted fabrics. Background Art

[0002] Knitted fabrics have good moisture absorption and breathability, soft feel, soft luster, good warmth retention, good dyeability, low price, wide applicability, and a wide range of raw materials that can be used. They are suitable for making underwear, tights, sportswear, etc., and are also widely used in industry, agriculture, medical and health care and other fields.

[0003] However, knitted fabrics spun by knitting machines are often accompanied by curling and weft problems, which greatly affect the quality of knitted fabrics. This requires factories to perform complex finishing on knitted fabrics. However, the existing knitted fabric finishing equipment in China still has the following problems: ① The process is not comprehensive, and there is no good solution to the weft problem of knitted fabrics; ② The degree of automation is not high, and the existing finishing process is often implemented semi-automatically or manually, which greatly increases the production cost; ③ The quality of knitted fabrics decreases after finishing, and the discontinuity of the process leads to multiple windings of knitted fabrics, which affects the quality of knitted fabrics. Therefore, the systematic development of highly automated, continuous and complete knitted fabric finishing equipment has become an urgent need for current factories. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-stage finishing device for knitted fabrics in view of the above-mentioned deficiencies in the prior art.

[0005] A multi-stage finishing device for knitted fabrics of the present invention comprises a pair of double-open extended thread rollers arranged in sequence along the knitted fabric movement direction, an infrared weft bias line detection device, two pairs of single-open thread rollers, and an ironing and shaping component;

[0006] It also includes a driving assembly for driving the single-open thread roller to rotate, and the driving assembly is electrically connected to the infrared weft twill pattern detection device;

[0007] The surface of the double-open extended thread roller has threads extending from the middle section of the roller to both ends;

[0008] The thread directions of the two pairs of single-threaded rollers are opposite.

[0009] Furthermore, the single-open thread roller includes a roller body and a connecting shaft assembly, the roller body is hollow inside, and the roller body is divided into at least three unit rollers along its axial direction, and the inner wall of each unit roller is provided with a plurality of tooth grooves at intervals, and the number of each tooth groove is different; the connecting shaft assembly is arranged in the roller body, and the connecting shaft assembly includes at least three hollow driving shafts which are sequentially sleeved inside, the driving shafts can move relative to each other along their axial direction and are radially fixed to each other, the driving shafts correspond to each unit roller one by one, and each connecting shaft is provided with a transmission gear assembly, the transmission gear assembly corresponds to the tooth groove, the driving assembly includes a first driving member and a second driving member, the first driving member is transmission-connected to the connecting shaft assembly to drive the connecting shaft assembly to rotate as a whole, so that the connecting shaft assembly drives the roller body to rotate; the second driving member is transmission-connected to each driving shaft respectively, and drives each driving shaft to move relative to each other along the axial direction, so that the transmission gear assembly on the driving shaft corresponds to any tooth groove of the unit roller.

[0010] Furthermore, the transmission gear assembly is a planetary gear system, the male gear of the planetary gear system is fixed on the driving shaft, the planet carrier sleeve is arranged on the driving shaft, and the planetary gear is arranged on the planet carrier.

[0011] Furthermore, the second driving member includes a hydraulic cylinder having a plurality of driving rods, and the other end of each driving rod is provided with a driving block, the driving block is axially fixed to the driving shaft, and the driving shaft can rotate relative to the driving block.

[0012] Furthermore, the first driving member is drivingly connected to the innermost driving shaft.

[0013] Furthermore, the roller body is split into three unit rollers along its axial direction, and three tooth grooves are arranged at intervals on the inner wall of each unit roller. The connecting shaft assembly includes a primary connecting shaft, a secondary connecting shaft and a tertiary connecting shaft which are sleeved in sequence.

[0014] Furthermore, the roller surface of the single-threaded roller is integral.

[0015] Furthermore, the infrared weft twill pattern detection device includes an infrared light transmitter and an infrared light receiver.

[0016] Furthermore, the ironing and shaping assembly includes a pair of ironing rollers.

[0017] Furthermore, it also includes an output roller arranged at the front end of the double-open extended thread roller and a winding mechanism arranged at the rear end of the ironing and shaping component.

[0018] 1. A multi-stage finishing device for knitted fabrics of the present invention uses an infrared weft bias pattern detection device and a single-open thread roller in combination, which can automatically identify the weft bias direction of the knitted fabric, thereby calling the corresponding single-open thread roller to solve the weft bias problem.

[0019] 2. The multi-stage finishing device for knitted fabrics of the present invention uses double-open extended thread rollers to stretch the knitted fabric to both sides during operation, thereby solving the problem of curling of the knitted fabrics.

[0020] 3. The multi-stage finishing device for knitted fabrics of the present invention integrates the functions of fabric extension, weft bias detection, weft bias elimination, ironing and shaping, and winding, which greatly shortens the finishing process of knitted fabrics. Therefore, the design is not only widely applicable, but also can effectively control costs while ensuring the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a multi-stage finishing device for knitted fabrics of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a double-open extended thread roller;

[0023] Figure 3 , 4 A schematic diagram of a structure of a single-open thread roller;

[0024] Figure 5 A schematic diagram of another structure of a single-threaded roller;

[0025] Figure 6 It is a schematic diagram of the structure of a single thread roller and a drive assembly;

[0026] Figure 7 It is a schematic diagram of the structure of the ironing roller.

[0027] 1. Double-open extended thread roller; 2. Infrared weft twill detection device; 3. Single-open thread roller; 31. Roller body; 311. Unit roller; 312. Tooth groove; 32. Connecting shaft assembly; 321. Drive shaft; 4. Ironing and shaping assembly; 41. Ironing roller; 5. Drive assembly; 51. First drive member; 52. Second drive member; 521. Hydraulic cylinder; 522. Drive rod; 523. Drive block; 6. Transmission gear assembly; 61. Yang wheel; 62. Planet carrier; 63. Planet gear; 7. Output leather roller; 8. Winding mechanism. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] like Figure 1As shown, a multi-stage finishing device for knitted fabrics of the present invention comprises a pair of double-open extended thread rollers 1 arranged in sequence along the moving direction of the knitted fabric, an infrared weft bias line detection device 2, two pairs of single-open thread rollers 3, and an ironing and shaping component 4;

[0030] It also includes a driving assembly 5 for driving the single-open thread roller 3 to rotate, and the driving assembly 5 is electrically connected to the infrared weft twill pattern detection device 2;

[0031] like Figure 2 As shown, the surface of the double-open extended thread roller 1 has threads extending from the middle section of the roller to both ends; when working, the knitted fabric is stretched to both sides to solve the curling problem of the knitted fabric.

[0032] The thread directions of the two pairs of single-threaded rollers 3 are opposite.

[0033] A multi-stage finishing device for knitted fabrics of the present invention uses an infrared weft bias pattern detection device 2 and a single-open thread roller 3 in combination, which can automatically identify the weft bias direction of the knitted fabric, thereby calling the corresponding single-open thread roller 3 to solve the weft bias problem.

[0034] The multi-stage finishing device for knitted fabrics of the present invention integrates the functions of fabric surface extension, weft bias detection, weft bias elimination, ironing and shaping, and winding, which greatly shortens the finishing process of knitted fabrics. Therefore, the design is not only widely applicable, but also can effectively control costs while ensuring the use effect.

[0035] The infrared weft twill grain detection device 2 is divided into two parts, an upper piece and a lower piece. The upper piece is equipped with an infrared light transmitter, and the lower piece is equipped with an infrared light receiver. A 1 cm gap is left in the middle for the knitted fabric to pass through. When the stretched knitted fabric passes through, the infrared light will send the grain of the knitted fabric to the receiving device, and through photoelectric conversion, an electrical signal is formed, and then the thread direction of the single-open thread roller 3 of the next level is selected.

[0036] Example 1

[0037] The single thread roller 3 includes two pairs of thread rollers with different thread directions. Figure 3 and Figure 4 As shown, the thread direction of a pair of single-open thread rollers 3 is to the left, and the thread direction of another pair of single-open thread rollers 3 is to the right. The thread roller directions here are the directions in which the thread rollers pull the knitted fabric to move when the thread rollers are working. The roller surface of the single-open thread roller is an integral body, which is the same as the double-open extended thread roller 1 in front. The length of the single-open thread roller 3 is 1.8m, the diameter is 20cm, the thread height is 5mm, and the pitch is 2cm. When working, it is used in conjunction with the infrared weft bias grain detection device 2 at the front end, and the corresponding single-open thread roller 3 is selected to process the weft bias grain: when the weft bias grain of the knitted fabric is to the right, select a pair of single-open thread rollers 3 to pull the knitted fabric as a whole to the left to correct the grain of the knitted fabric. Otherwise, select another pair of single-open thread rollers 3 to work.

[0038] Example 2

[0039] like Figure 5 and Figure 6 As shown, in order to more conveniently and better solve the weft problem of the whole knitted fabric, the single open thread roller 3 may include a roller body 31 and a connecting shaft assembly 32. The roller body 31 is hollow inside. The roller body 31 is divided into at least three unit rollers 311 along its axial direction. The inner wall of each unit roller 311 is provided with a plurality of tooth grooves 312 at intervals, and the number of each tooth groove 312 is different; the connecting shaft assembly 32 is arranged in the roller body 31, and the connecting shaft assembly 32 includes at least three hollow driving shafts 321 which are sequentially sleeved inside. The driving shafts 321 can move relative to each other along their axial direction and are radially fixed to each other. The driving shaft 321 is connected to each unit roller 311. 1 one-to-one correspondence, each driving shaft 321 is provided with a transmission gear assembly 6, the transmission gear assembly 6 corresponds to the tooth groove 312, the driving assembly 5 includes a first driving member 51 and a second driving member 52, the first driving member 51 is connected to the connecting shaft assembly 32, so as to drive the connecting shaft assembly 32 to rotate as a whole, so that the connecting shaft assembly 32 drives the roller body 31 to rotate; the second driving member 52 is connected to each driving shaft 321, and drives each driving shaft 321 to move axially relative to each other, so that the transmission gear assembly 6 on the driving shaft 321 corresponds to any tooth groove 312 of the unit roller 311. The single-open thread roller 3 is cut into multiple sections, and the rotation speed of each section of the thread roller is adjusted separately, so as to form a speed difference block on the entire single-open thread roller 3, thereby improving the lateral pulling effect on the knitted fabric.

[0040] The transmission gear assembly 6 can be a planetary gear system, in which the male gear 61 is fixed on the driving shaft 321, the planet carrier 62 is sleeved on the driving shaft 321, and the planetary gear 63 is arranged on the planet carrier 62. The first driving member 51 drives the driving shaft 321 to rotate, the male gear 61 rotates to drive the planetary gear 63 to rotate, and the planetary gear 63 drives the roller body 31 to rotate.

[0041] The second driving member 52 includes a hydraulic cylinder 521, which has a plurality of driving rods 522. The other end of each driving rod 522 is provided with a driving block 523. The driving block 523 is axially fixed to the driving shaft 321, and the driving shaft 321 can rotate relative to the driving block 523. The hydraulic cylinder 521 drives the driving rod 522 to drive the driving shaft 321 to move axially to a preset position, so that the transmission gear assembly 6, i.e., the planetary gear system, corresponds to any tooth groove 312. The number of teeth of each tooth groove 312 is different, so the same driving shaft 321 rotates one circle, but the rotation angle of each roller body 31 is indeed different, so as to control the rotation speed of each roller body 31.

[0042] The first driving member 51 is in transmission connection with the innermost drive shaft 321, driving all the drive shafts 321 to rotate together. The first driving member 51 may include a motor and a belt, one end of the belt is sleeved on the driving end of the motor, and the other end is sleeved on the innermost drive shaft 321.

[0043] Specifically, the roller body 31 can be split into three unit rollers 311 along its axial direction, and the inner wall of each unit roller 311 is provided with three tooth grooves 312 at intervals. The connecting shaft assembly 32 includes a primary drive shaft 321, a secondary drive shaft 321 and a tertiary drive shaft 321 which are sequentially sleeved.

[0044] For example, the specific scheme may be as follows: Figure 6 As shown, the single-open thread roller 3 is divided into three sections for differential speed control, and the spacing between the two-section unit rollers 311 is 5 mm. The speed difference of the three-section unit rollers 311 is set to increase along the thread direction, the initial section speed is set to 60 rpm, and then each section speed increases by 15 rpm, forming differential speed blocks of 60, 75, and 90 rpm.

[0045] Example 3

[0046] The ironing and shaping assembly 4 may include a pair of ironing rollers 41. The ironing rollers 41 are as follows: Figure 7 As shown, it is a hollow shaft roller with a diameter of 30 cm, a shaft length of 2 m, and a middle working area shaft length of 1.8 m. The shaft body of the working area is evenly distributed with fine holes of 2 mm in diameter. When working, hot air is injected into the ironing roller 41 from both ends. When the ironing roller 41 rotates, the hot air heats the shaft body and is ejected from the fine holes on the working area to heat-set the knitted fabric passing through, and finally is formed into a package by the winding mechanism 8.

[0047] The device can also include an output roller 7 arranged at the front end of the double-open extension thread roller 1 and a winding mechanism 8 arranged at the rear end of the ironing and shaping component 4. The functions of fabric extension, weft bias detection, weft bias elimination, ironing and shaping and winding are integrated, which greatly shortens the finishing distance of knitted fabrics.

[0048] Embodiment 4:

[0049] The device of the present invention was installed on a TFK-S3F4 circular knitting machine to conduct a weaving test. The knitted fabric structure type was set to plain weave, the width was set to 1.4m, and the speed was 16m / min. The yarn raw material selected was 30tex cotton yarn. In addition, without using the device of the present invention, the second group of knitted fabrics was woven with the same process parameters. The results showed that the plain knitted fabric spun using the device of the present invention did not have curling and width reduction, and the weft slope per unit area of ​​the fabric was below 3%. However, when the second group of knitted fabrics were not spun using the device of the present invention, the width was reduced to 1.3m due to the high tension treatment during weaving. The knitted fabrics after being removed from the machine had serious curling, and the weft slope per unit area of ​​the fabric was 7%. This shows that the device of the present invention has indeed solved the problem of curling of weft knitted fabrics, and reduced the weft slope per unit area of ​​the fabric by 43%.

[0050] For matters not mentioned above, the prior art applies.

[0051] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art to which the present invention belongs may make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the present invention or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc. made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage finishing device for knitted fabrics, characterized in that: It comprises a pair of double-open extended thread rollers (1) arranged in sequence along the moving direction of the knitted fabric, an infrared weft bias line detection device (2), two pairs of single-open thread rollers (3) and an ironing and shaping component (4); It also includes a driving assembly (5) for driving the single-open thread roller (3) to rotate, and the driving assembly (5) is electrically connected to the infrared weft twill pattern detection device (2); The double-open extended thread roller (1) has threads extending from the middle section of the roller to both ends on its surface; The thread directions of the two pairs of single-threaded rollers (3) are opposite.

2. A multi-stage finishing device for knitted fabrics as claimed in claim 1, characterized in that: The single-open thread roller (3) comprises a roller body (31) and a connecting shaft assembly (32); the roller body (31) is hollow inside; the roller body (31) is split into at least three unit rollers (311) along its axial direction; the inner wall of each unit roller (311) is provided with a plurality of tooth grooves (312) at intervals; the number of tooth grooves (312) is different; the connecting shaft assembly (32) is arranged in the roller body (31); the connecting shaft assembly (32) comprises at least three hollow drive shafts (321) which are sequentially sleeved inside; the drive shafts (321) can move relative to each other along their axial direction and are radially fixed to each other; the drive shafts (321) correspond one to one with each unit roller (311); each drive shaft (321) is provided with a plurality of tooth grooves (312) at intervals; the number of tooth grooves (312) is different; the connecting shaft assembly (32) is arranged in the roller body (31); the connecting shaft assembly (32) comprises at least three hollow drive shafts (321) which are sleeved in sequence; the drive shafts (321) can move relative to each other along their axial direction and are radially fixed to each other; the drive shafts (321) correspond one to one with each unit roller (311); each drive shaft (321) is provided with a plurality of tooth grooves (312) at intervals; 1) are provided with a transmission gear assembly (6), the transmission gear assembly (6) corresponds to the tooth groove (312), the driving assembly (5) comprises a first driving member (51) and a second driving member (52), the first driving member (51) is transmission-connected with the connecting shaft assembly (32) to drive the connecting shaft assembly (32) to rotate as a whole, so that the connecting shaft assembly (32) drives the roller body (31) to rotate; the second driving member (52) is transmission-connected with each driving shaft (321) respectively, and drives each driving shaft (321) to move axially relative to each other, so that the transmission gear assembly (6) on the driving shaft (321) corresponds to any tooth groove (312) of the unit roller (311).

3. A multi-stage finishing device for knitted fabrics as claimed in claim 2, characterized in that: The transmission gear assembly (6) is a planetary gear system, the male gear (61) of the planetary gear system is fixed on the drive shaft (321), the planet carrier (62) is sleeved on the drive shaft (321), and the planetary gear (63) is arranged on the planet carrier (62).

4. A multi-stage finishing device for knitted fabrics as claimed in claim 2, characterized in that: The second driving member (52) comprises a hydraulic cylinder (521), wherein the hydraulic cylinder (521) has a plurality of driving rods (522), and each driving rod (522) is provided with a driving block (523) at the other end, wherein the driving block (523) is axially fixed on the driving shaft (321), and the driving shaft (321) can rotate relative to the driving block (523).

5. A multi-stage finishing device for knitted fabrics as claimed in claim 2, characterized in that: The first driving member (51) is in driving connection with the innermost driving shaft (321).

6. A multi-stage finishing device for knitted fabrics as claimed in claim 2, characterized in that: The roller body (31) is split into three unit rollers (311) along its axial direction, and the inner wall of each unit roller (311) is provided with three tooth grooves (312) at intervals. The connecting shaft assembly (32) comprises a primary drive shaft (321), a secondary drive shaft (321) and a tertiary drive shaft (321) which are sleeved in sequence.

7. A multi-stage finishing device for knitted fabrics according to claim 1, characterized in that: The roller surface of the single-open thread roller (3) is an integral whole.

8. A multi-stage finishing device for knitted fabrics as claimed in claim 1, characterized in that: The infrared weft diagonal pattern detection device (2) comprises an infrared light transmitter and an infrared light receiver.

9. A multi-stage finishing device for knitted fabrics as claimed in claim 1, characterized in that: The ironing and shaping component (4) comprises a pair of ironing rollers (41).

10. A multi-stage finishing device for knitted fabrics according to claim 1, characterized in that: It also comprises an output leather roller (7) arranged at the front end of the double-open extended thread roller (1) and a winding mechanism (8) arranged at the rear end of the ironing and shaping component (4).

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