Multi-stage finishing device for knitted fabrics

Abstract

The present invention relates to the technical field of textile equipment, and in particular to a multi-stage finishing device for knitted fabrics. The multi-stage finishing device for knitted fabrics of the present invention comprises a pair of double-spread thread rollers, an infrared weft bias line detection device, two pairs of single-spread thread rollers, and an ironing and shaping component that are sequentially arranged along the moving direction of the knitted fabric; it also comprises a driving component for driving the single-spread thread rollers to rotate, and the driving component is electrically connected to the infrared weft bias line detection device; the surface of the double-spread thread rollers has threads extending from the middle section of the roller to both ends; the threads of the two pairs of single-spread thread rollers are in opposite directions. The multi-stage finishing device for knitted fabrics of the present invention combines the functions of fabric extension, weft bias line detection, weft bias elimination, ironing and shaping, and winding into one, which greatly shortens the finishing distance of the knitted fabrics.

Description

Technical Field

[0001] The present invention relates to the technical field of textile equipment, 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 can be made from a wide range of raw materials. They are suitable for making underwear, tights and sportswear, etc., and are also widely used in industry, agriculture, medical and health fields.

[0003] However, knitted fabrics spun by knitting machines often suffer from curling and weft skew, significantly impacting their quality. This necessitates complex finishing processes for the fabrics. However, existing knitted fabric finishing equipment in China still suffers from the following issues: ① Incomplete processes, with no effective solution to the weft skew problem; ② Low automation levels, with existing finishing processes often performed semi-automatically or manually, significantly increasing production costs; and ③ Decreased quality after finishing, as inconsistent processes lead to multiple windings of the fabric, impacting its quality. Therefore, the systematic development of highly automated, continuous, and comprehensive knitted fabric finishing equipment has become an urgent need for factories. Summary of the Invention

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

[0005] The multi-stage finishing device of the present invention comprises a pair of double-open extended thread rollers arranged in sequence along the moving direction of the knitted fabric, 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-threaded roller to rotate, and the driving assembly is electrically connected to the infrared weft bias line detection device;

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

[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 3 unit rollers along its axial direction, and the inner wall of each unit roller is provided with a plurality of teeth 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 3 hollow driving shafts that are sequentially sleeved inside, the driving shafts can move relative to each other along their axial directions and are radially fixed to each other, the driving shafts correspond one to one with each unit roller, 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 axially relative to each other, 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 drive shaft, the planet carrier sleeve is arranged on the drive 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. 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 in driving connection with 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 on the inner wall of each unit roller. The connecting shaft assembly includes a first-level connecting shaft, a second-level connecting shaft and a third-level connecting shaft which are sequentially sleeved.

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

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

[0016] Furthermore, the ironing and shaping component 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. The multi-stage finishing device for knitted fabrics of the present invention uses an infrared weft bias pattern detection device in conjunction with a single-open thread roller, 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 a double-open extended thread roller to stretch the knitted fabric to both sides during operation, thereby solving the problem of curling of the knitted fabric.

[0020] 3. This multi-stage knit fabric finishing device combines fabric stretching, weft skew detection, weft skew elimination, ironing and shaping, and winding functions into one device, significantly shortening the knit fabric finishing process. Therefore, this design not only has a wide range of applications but also effectively controls costs while ensuring effective use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of a multi-stage finishing device for knitted fabrics according to the present invention;

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

[0023] Figure 3 、 4 A schematic diagram of a structure of a single-threaded 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 structural diagram 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 gear; 62. Planet carrier; 63. Planet gear; 7. Output 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 solutions 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 grain detection device 2, two pairs of single-open thread rollers 3, and an ironing and shaping component 4;

[0030] The drive assembly 5 is further included to drive the single-threaded roller 3 to rotate, and the drive assembly 5 is electrically connected to the infrared weft bias detection device 2;

[0031] like Figure 2 As shown, 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 combines fabric stretching, weft skew detection, weft skew elimination, ironing and shaping, and winding functions into one device, significantly shortening the finishing process for knitted fabrics. Therefore, this design not only has a wide range of applications but also effectively controls costs while ensuring effective use.

[0035] The infrared weft twill pattern detection device 2 is divided into two parts, the upper piece and the 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 texture of the knitted fabric to the receiving device, and through photoelectric conversion, an electrical signal is formed to select the thread direction of the single-open thread roller 3 of the next level.

[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, one pair of single-thread rollers 3 have their threads oriented to the left, while the other pair of single-thread rollers 3 have their threads oriented to the right. The directions of these rollers indicate the direction in which the rollers pull the knitted fabric. The single-thread rollers have a single surface, identical to the double-thread extension rollers 1 mentioned above. The single-thread rollers 3 are 1.8m long, 20cm in diameter, with a thread height of 5mm and a pitch of 2cm. During operation, they work in conjunction with the infrared weft bias detection device 2 at the front end. The corresponding single-thread roller 3 is selected to process the weft bias. If the weft bias of the knitted fabric is to the right, one pair of single-thread rollers 3 is selected to pull the entire fabric to the left, correcting the bias. Otherwise, the other pair of single-thread rollers 3 is selected.

[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-threaded roller 3 may include a roller body 31 and a connecting shaft assembly 32. The roller body 31 is hollow inside, and 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, 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 drive shafts 321 that 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 shaft 321 is connected to each unit roller 311. Each drive shaft 321 is equipped with a transmission gear assembly 6, which corresponds to the tooth groove 312. The drive assembly 5 includes a first drive member 51 and a second drive member 52. The first drive member 51 is in transmission connection with the connecting shaft assembly 32 to drive the connecting shaft assembly 32 to rotate as a whole, thereby driving the roller body 31 to rotate. The second drive member 52 is in transmission connection with each drive shaft 321 and drives each drive shaft 321 to move axially relative to each other, so that the transmission gear assembly 6 on the drive shaft 321 corresponds to any tooth groove 312 of the unit roller 311. The single-thread roller 3 is divided into multiple sections, and the speed of each section is independently controlled. This creates speed difference blocks across the entire single-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 a male gear 61 is fixed to the drive shaft 321, a planet carrier 62 is sleeved on the drive shaft 321, and a planetary gear 63 is mounted on the planet carrier 62. The first driving member 51 drives the drive shaft 321 to rotate, and the male gear 61 rotates the planetary gear 63, which in turn rotates the roller body 31.

[0041] The second driving member 52 includes a hydraulic cylinder 521, which has multiple 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, that is, the planetary gear system, corresponds to any tooth groove 312. The number of teeth in 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 being sleeved on the driving end of the motor and the other end being 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 connected.

[0044] For example, the specific plan can be as follows: Figure 6 As shown, the single-screw roller 3 is divided into three sections for differential speed control. The spacing between the two sections of unit rollers 311 is 5 mm. The speed difference between the three sections of unit rollers 311 is set to increase along the thread direction. The initial speed is set to 60 rpm, and the speed is increased by 15 rpm in each subsequent section, 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 may be 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. There are fine holes with a diameter of 2 mm evenly distributed on the shaft body of the working area. When working, hot air flow is injected into the interior of the ironing roller 41 from both ends. When the ironing roller 41 rotates, the hot air flow 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 skew detection, weft skew elimination, ironing and shaping, and winding are integrated, greatly shortening the finishing process of knitted fabrics.

[0048] Example 4:

[0049] The device of the present invention was installed on a TFK-S3F4 circular knitting machine, and a weaving test was carried out. 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, a second group of knitted fabrics was woven using the same process parameters. The results showed that the plain knitted fabrics spun using the device of the present invention did not show curling or width reduction, and the weft slope per unit area of ​​the fabric was below 3%. However, when the device of the present invention was not used, the width of the second group of knitted fabrics was reduced to 1.3m due to the high tension treatment during weaving. After being removed from the machine, the knitted fabrics showed severe 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] Any matters not mentioned above shall be subject to the existing technology.

[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 of the present invention may make various modifications or additions to the described specific embodiments or replace them in similar ways, but they will not deviate from the direction of the present invention or exceed the scope defined by the appended claims. Those skilled in the art should understand that any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention should be included in the scope of protection 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 knitted fabric movement direction, 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-threaded roller (3) to rotate, and the driving assembly (5) is electrically connected to the infrared weft twill detection device (2); The double-open extended thread roller (1) has threads extending from the middle of the roller to both ends on its surface; The threads of the two pairs of single-threaded rollers (3) are in opposite directions; The single-thread roller (3) comprises a roller body (31) and a connecting shaft assembly (32), wherein the roller body (31) is hollow inside and is split into at least three unit rollers (311) along its axial direction, and the inner wall of each unit roller (311) is provided with a plurality of tooth grooves (312) at intervals, and the number of tooth grooves (312) is different; the connecting shaft assembly (32) is arranged in the roller body (31), and the connecting shaft assembly (32) comprises at least three hollow drive shafts (321) which are sequentially sleeved inside, and the drive shafts (321) can move relative to each other along their axial direction and are radially fixed to each other, and the drive shafts (321) correspond to each unit roller (311) one by one, and each drive shaft (321) is provided with a plurality of tooth grooves (312) at intervals, and the number of tooth grooves (312) is different; the connecting shaft assembly (32) is arranged in the roller body (31), and the connecting shaft assembly (32) comprises at least three hollow drive shafts (321) which are sleeved in sequence, and the drive shafts (321) can move relative to each other along their axial direction and are radially fixed to each other, and the drive shafts (321) correspond to each unit roller (311) one by one, and each drive shaft (321) is provided with a plurality of tooth grooves (312) at intervals, and the number of tooth grooves (312) is different; the connecting shaft assembly (32) is provided in the roller body (31), and the connecting shaft assembly (32 ... 1) are 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 in transmission connection 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 respectively in transmission connection with 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 transmission gear assembly (6) is a planetary gear system, wherein 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).

2. A multi-stage finishing device for knitted fabrics according to claim 1, characterized in that: The second driving member (52) includes a hydraulic cylinder (521), the hydraulic cylinder (521) having a plurality of driving rods (522), the other end of each driving rod (522) being provided with a driving block (523), the driving block (523) being axially fixed to the driving shaft (321), and the driving shaft (321) being rotatable relative to the driving block (523).

3. A multi-stage finishing device for knitted fabrics according to claim 1, characterized in that: The first driving member (51) is in transmission connection with the innermost driving shaft (321).

4. A multi-stage finishing device for knitted fabrics according to claim 1, 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) that are sleeved in sequence.

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

6. A multi-stage finishing device for knitted fabrics according to claim 1, characterized in that: The infrared weft twill detection device (2) comprises an infrared light transmitter and an infrared light receiver.

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

8. The multi-stage finishing device for knitted fabrics according to claim 1, characterized in that: It also includes an output 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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