Yarn untwisting device

Abstract

The utility model provides a yarn untwisting device which comprises an untwisting pipe, a fixed seat and a base which are sequentially connected, an air inlet hole and an air outlet hole are arranged on the base, and the yarn untwisting device is characterized in that the fixed seat is arranged in a fixed seat shell, the fixed seat shell and the fixed seat shell are tightly connected to form a semicircular or annular air channel, and the semicircular or annular air channel is provided with an air channel through hole I and an air channel through hole II. An inclined through hole is formed in the side wall of one end of the untwisting pipe, the untwisting pipe is connected with the fixing base in a rotating and adjustable mode, and the inclined through hole is communicated with the air path through hole I or the air path through hole II and used for untwisting Z-twist or S-twist yarn. The fixing seat is connected with the base, and the air outlet hole in the base is communicated with the semicircular or annular air channel. Bending points in an air channel of untwisting air flow can be reduced, the air flow in the air channel can run smoothly, the stability of yarn processing and the untwisting effect are guaranteed, the variety adaptability is high, Z-twist yarn and S-twist yarn can share the same device, assembly is easy, and operation and use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of textile equipment manufacturing, relates to the improvement of twisting technology, and is specifically a yarn untwisting device. Background Art

[0002] In the field of splicing technology, the quality of the splicing directly affects the production efficiency of the current and next processes and the final fabric quality. Therefore, splicing technology is a key technology in the textile field.

[0003] This utility model specifically relates to a component on a splicer that adjusts the direction of the yarn twist before the yarn is spliced ​​together. This allows the compressed airflow, when passing through the splicer, to form an airflow in the opposite direction acting on the yarn, untwisting the yarns at both ends to eliminate the yarn twist and prepare for subsequent splicing. The splicer uses airflow to act on the yarn, and the quality of the yarn untwisting directly affects the quality of the splice.

[0004] At present, the main device for untwisting yarns by splicers in the textile market is the preparation device produced by Meisdan (Italy), and the company's related technology has been granted a Chinese patent with the patent number CN201921571510.9. It is a preparation device for preparing thread ends for splicing using a knotless pneumatic splicing device for spinning, wherein the preparation device includes a base body, the base body includes a pipe with an inlet hole, the inlet hole is used to introduce a fluid under pressure, and the base body includes an outlet hole for discharging the fluid under pressure; the preparation device also includes a The tube base body is used to support the preparation tube. The tube base body is detachably assembled to the base body and includes a connection base for connecting to the preparation tube and a conduit with openings at opposite ends. The opposite ends define an inlet end for introducing a fluid under pressure and an outlet end for discharging the fluid under pressure. The preparation tube, which is connectable to the connection base and includes an internal hollow tubular element, has openings at opposite ends. The wall of the tubular element has a through hole that communicates with the outlet end of the conduit in the tube base body. The opposite ends of the tubular element define a first end for inserting a prepared thread adjacent to the through hole and a second end for discharging the fluid under pressure. This device allows airflow to act on the yarn, causing the yarn to be untwisted.

[0005] The patented technology mainly has the following problems:

[0006] 1. There are too many bending points in the air passage of the untwisting airflow in the preparation device, which has a great impact on the smoothness of the untwisting airflow, causing great loss of airflow and making the untwisting effect unstable.

[0007] 2. The preparation device is fixed in position and cannot be adjusted specifically according to the characteristics of the yarn variety. Therefore, the variety adaptability is low. Moreover, Z-twist yarn and S-twist yarn cannot share the same device. Z-twist and S-twist configurations require component replacement, which has low adaptability and adjustability and is more complicated to operate.

[0008] 3. The preparation device is complicated to assemble, the assembly accuracy is difficult to control, and it is difficult to ensure the consistency of the device.

[0009] Therefore, how to design a yarn untwisting device and its use method to reduce the bending points in the air path of the untwisting airflow, make the airflow run smoothly, ensure the stability of the processed yarn and the untwisting effect, and have strong adaptability to varieties. Z-twisted yarn and S-twisted yarn can share the same device, with simple assembly and easy operation and use. This is a technical problem that needs to be solved urgently. Utility Model Content

[0010] In order to solve the above-mentioned problems and shortcomings of the prior art, the utility model provides a yarn untwisting device and a method for using the same, which reduces the bending points in the air path of the untwisting airflow, so that the airflow therein runs smoothly, ensuring the stability of the processed yarn and the untwisting effect, and has strong adaptability to variety. Z-twisted yarn and S-twisted yarn can share the same device, which is simple to assemble and easy to operate.

[0011] The purpose of this utility model is achieved through the following technical solutions:

[0012] A yarn untwisting device comprises an untwisting tube, a fixed seat and a base connected in sequence, an air inlet and an air outlet being provided on the base, and is characterized in that the fixed seat is placed in a fixed seat shell, the two are tightly connected in a detachable manner and form a semicircular air path channel or an annular air path channel, the semicircular air path channel or the annular air path channel is provided with an air path hole I and an air path hole II, an oblique through hole is provided on the side wall at one end of the untwisting tube, the untwisting tube is axially fitted into the fixed seat and is connected to the fixed seat in a rotationally adjustable manner, the oblique through hole is communicated with the air path hole I or the air path hole II, and is used for untwisting Z-twisted or S-twisted yarn, the fixed seat 3 is detachably connected to the base, and the air outlet on the base is communicated with the semicircular air path channel or the annular air path channel.

[0013] The first improvement to the above technical solution: the fixing seat is provided with a semicircular groove, the air path through hole I and the air path through hole II are provided on the bottom surface of the semicircular groove, the fixing seat shell is provided with an accommodating cavity, the fixing seat is placed in the accommodating cavity of the fixing seat shell, and a semicircular air path channel is formed by the semicircular groove and the side wall of the accommodating cavity, and corresponding tightening screw holes are provided on the fixing seat and the fixing seat shell, and a tightening screw is inserted into the tightening screw hole, and the end of the tightening screw is pressed against the outer wall of the untwisting tube in the fixing seat, so as to fix the untwisting tube 1 that is rotated and adjusted to the set position.

[0014] The second improvement to the above technical solution: the fixing seat is cylindrical, and a circular ring groove is provided on the middle side wall of the fixing seat, and the air path through hole I and the air path through hole II are provided on the bottom surface of the circular ring groove. The fixing seat shell is provided with a cylindrical accommodating cavity, and the fixing seat is placed in the cylindrical accommodating cavity of the fixing seat shell. The circular ring groove and the side wall of the cylindrical accommodating cavity form an annular air path channel, and corresponding tightening screw holes are provided on the fixing seat and the fixing seat shell. A tightening screw is inserted into the tightening screw hole, and the end of the tightening screw presses against the outer wall of the untwisting tube inserted in the fixing seat, so as to fix the untwisting tube that is rotated and adjusted to a set position.

[0015] Improvement on the above technical solution: the angle between the axes of the gas path through hole I and the gas path through hole II is 80-100 degrees.

[0016] Further improvement of the above technical solution: a pipe is arranged in the fixed seat 3, and the untwisting tube 1 includes a thin round tube segment and a thick round tube segment, the outer end of the thin round tube segment is the first end, and the outer end of the thick round tube segment is the second end, the oblique through hole is arranged on the side wall of the thin round tube segment, and a scale line is arranged on the inner end side wall of the thick round tube segment corresponding to the oblique through hole, and the end surface of the fixed seat close to the scale line corresponds to the air path through hole I and the air path through hole II, respectively, and the scale area I and the scale area II are respectively provided with scale rulers; a pipe is arranged in the middle of the fixed seat, and the thin round tube segment of the untwisting tube is inserted into the pipe in the middle of the fixed seat to form a rotational fit.

[0017] Further improvement of the above technical solution: a cavity is provided in the base, the bottom of the cavity is open, a base sealing plate is installed on the opening, the air inlet of the base is provided on the base sealing plate, the air outlet is provided on the end face where the base and the fixing seat are connected, the air outlet is communicated with the cavity, a sealing gasket is provided between the fixing seat and the base, a through hole and a screw hole are provided on the sealing gasket, screw holes are provided correspondingly on the base and the fixing seat, the air outlet on the base is aligned with the through hole on the sealing gasket, and the base, the sealing gasket and the fixing seat are connected and fixed as a whole by connecting screws I and connecting screws II.

[0018] The advantages and positive effects of the utility model are:

[0019] 1. Compared with the previous technology, the utility model reduces the bending points in the air channel, so that the air flow of the whole device runs smoothly and the air flow loss is small, thereby ensuring the stability of the yarn processing and the untwisting effect of the device;

[0020] 2. The utility model has flexible adjustment capabilities. The same device can have both Z twist and S twist, two twist directions, which can be achieved by simply rotating the angle without replacing components, making it more economical.

[0021] 3. The utility model has high adaptability and can adjust the air volume and air inlet angle according to the characteristics of the yarn variety, such as strength and twist, etc. The device is engraved with precise scale lines to ensure debugging consistency and reduce workload;

[0022] 4. The assembly of the utility model is simpler, and the assembly accuracy is easier to achieve than the structure of the previous technology, thereby ensuring the consistency of the device;

[0023] 5. The utility model can replace known types of devices without any additional modification. The utility model device is highly modifiable and does not require users to make additional configuration changes, which is more economical and easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an assembly exploded view of Example 1 of a yarn untwisting device of the present invention;

[0025] Figure 2 This is a three-dimensional diagram of an assembled yarn untwisting device embodiment 1 of the present invention;

[0026] Figure 3 This is a top view of a yarn untwisting device embodiment 1 of the present invention;

[0027] Figure 4 for Figure 3 The yarn untwisting device is shown in a CC-direction cross-sectional view in a Z-twist state;

[0028] Figure 5 for Figure 3 The yarn untwisting device is shown in a CC-direction cross-sectional view in S-twist state;

[0029] Figure 6 for Figure 3 DD-direction cross-sectional view of the yarn untwisting device shown;

[0030] Figure 7 This is a side view of a yarn untwisting device embodiment 1 of the present invention in a Z-twisting state;

[0031] Figure 8 This is a side view of a yarn untwisting device embodiment 1 of the utility model in an S-twisting state;

[0032] Figure 9 for Figure 7 The AA section view of the yarn untwisting device shown is in the Z-twisting state;

[0033] Figure 10 for Figure 8 A BB-sectional view of the yarn untwisting device in an S-twisted state;

[0034] Figure 11 This is a cross-sectional view of a yarn untwisting device embodiment 1 of the present invention in a Z-twisting state at a first angle;

[0035] Figure 12 This is a cross-sectional view of a yarn untwisting device embodiment 1 of the utility model in a Z-twisting state at a second angle.

[0036] Figure 13 This is a three-dimensional diagram of a yarn untwisting device embodiment 1 of the present invention in a Z-twisting state at a first angle;

[0037] Figure 14 This is a perspective view of a yarn untwisting device embodiment 1 of the present invention in a Z-twisting state at a second angle;

[0038] Figure 15 This is an assembly exploded view of Example 2 of a yarn untwisting device of the present invention;

[0039] Figure 16 This is a three-dimensional diagram of a yarn untwisting device embodiment 2 of the present invention after assembly;

[0040] Figure 17 This is a top view of Example 2 of a yarn untwisting device of the present invention;

[0041] Figure 18 for Figure 17 The yarn untwisting device is shown in a cross-sectional view taken along the AA direction in a Z-twist state;

[0042] Figure 19 for Figure 17 The yarn untwisting device is shown in an AA-direction cross-sectional view in an S-twist state;

[0043] Figure 20 This is a side view of Example 2 of a yarn untwisting device of the present invention;

[0044] Figure 21 for Figure 17 The yarn untwisting device is shown in a BB cross-sectional view in a Z-twist state;

[0045] Figure 22 for Figure 17 The yarn untwisting device is shown in a BB cross-sectional view of the S-twist state.

[0046] In the figure, 1, untwisting tube; 1a, first end; 1b, oblique through hole; 1c, second end; 1d, scale line; 2, fixing seat shell; 2a, shell air inlet; 3, fixing seat; 3a, semicircular air inlet; 3b, air channel; 3c, air through hole I; 3d, air through hole II; 4, base; 4a, cavity; 4b, air outlet; 5, base sealing plate; 5a, air inlet; 6, sealing gasket; 6a, through hole; 7, connecting screw I; 8, tightening screw; 9, connecting screw II; 10, plug. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0048] See also Figures 1-14 The air inlet 5a and the air outlet 4b are connected to each other in a detachable manner, and the air inlet 5b and the air outlet 4b are connected to each other in a detachable manner.

[0049] Furthermore, the above-mentioned fixing seat 3 is provided with a semicircular groove, and the air path through hole I3c and the air path through hole II3d are provided on the bottom surface of the semicircular groove. The fixing seat shell 2 is provided with an accommodating cavity, and the fixing seat 3 is placed in the accommodating cavity of the fixing seat shell 2. The semicircular groove and the side wall of the accommodating cavity form a semicircular air path channel 3b. The fixing seat 3 and the fixing seat shell 2 are correspondingly provided with tightening screw holes, and the tightening screw 8 is inserted into the tightening screw hole. The end of the tightening screw 8 is pressed against the outer wall of the untwisting tube 1 in the fixing seat 3, so as to fix the untwisting tube 1 that is rotated and adjusted to the set position.

[0050] Preferably, the angle between the axes of the above-mentioned air path through hole I3c and the air path through hole II3d is 80-100 degrees.

[0051] Specifically: a pipe is arranged in the above-mentioned fixed seat 3, and the untwisting tube 1 includes a thin round tube segment and a thick round tube segment. The outer end of the thin round tube segment is the first end 1a, and the outer end of the thick round tube segment is the second end 1c. The oblique through hole 1b is arranged on the side wall of the thin round tube segment, and a scale line 1d is arranged on the inner end side wall of the thick round tube segment corresponding to the oblique through hole 1b. The end face of the fixed seat 3 close to the scale line 1d corresponds to the air path through hole I3c and the air path through hole II3d, respectively, and the scale area I and the scale area II are respectively provided with scale rulers; a pipe is arranged in the middle of the fixed seat 3, and the thin round tube segment of the untwisting tube 1 is inserted into the pipe in the middle of the fixed seat 3 to form a rotational fit.

[0052] A cavity 4a is set in the above-mentioned base 4, and the bottom of the cavity 4a is open. A base sealing plate 5 is installed on the opening, and an air inlet 5a of the base 4 is set on the base sealing plate 5. An air outlet 4b is set on the end surface where the base 4 and the fixing base 3 are connected, and the air outlet 4b is communicated with the cavity 4a. A sealing gasket 6 is set between the fixing base 3 and the base 4, and a through hole 6a and a screw hole are set on the sealing gasket 6. Corresponding screw holes are set on the base 4 and the fixing base 3, and the air outlet 4b on the base 4 is aligned with the through hole 6a on the sealing gasket 6. The base 4, the sealing gasket 6 and the fixing base 3 are connected and fixed as a whole by connecting screws I7 and connecting screws II9.

[0053] See also Figure 15-Figure 22Embodiment 2 of a yarn untwisting device according to the present invention comprises an untwisting tube 1, a fixed seat 3, and a base 4 connected in sequence. The base 4 is provided with an air inlet 5a and an air outlet 4b. The fixed seat 3 is placed in a fixed seat housing 2. The two are tightly connected in a detachable manner to form an annular air passage 3e. An air passage hole I3c and an air passage hole II3d are provided in the annular air passage 3e. An oblique through hole 1b is provided on the side wall at one end of the untwisting tube 1. The untwisting tube 1 is axially fitted into the fixed seat 3 and is connected to the fixed seat 3 in a rotationally adjustable manner. The oblique through hole 1b communicates with the air passage hole I3c or the air passage hole II3d in the annular air passage 3e. The untwisting tube 1 is used for untwisting Z-twisted or S-twisted yarns. The fixed seat 3 is detachably connected to the base 4. The air outlet on the base 4 communicates with the annular air passage 3e.

[0054] Furthermore, the fixing seat 3 is cylindrical, with an annular groove provided on the middle side wall of the fixing seat 3, and air path holes I3c and II3d provided on the bottom surface of the annular groove. The fixing seat housing 2 is provided with a cylindrical accommodating cavity, and the fixing seat 3 is placed within the cylindrical accommodating cavity of the fixing seat housing 2. The annular groove and the side wall of the cylindrical accommodating cavity form an annular air path channel 3e. Tightening screw holes are correspondingly provided on the fixing seat 3 and the fixing seat housing 2, and a tightening screw 8 is inserted into the tightening screw hole. The end of the tightening screw 8 presses against the outer wall of the untwisting tube 1 inserted into the fixing seat 3, and is used to fix the untwisting tube 1 after the rotation is adjusted to the set position.

[0055] like Figure 15 As shown, the tightening screw hole on the fixing seat housing 2 can be blocked with a plug 10 when no adjustment is required.

[0056] Preferably, the angle between the axes of the above-mentioned air path through hole I3c and the air path through hole II3d is 80-100 degrees.

[0057] Specifically, a pipe is provided in the fixing seat 3. The untwisting tube 1 includes a thin circular tube segment and a thick circular tube segment. The outer end of the thin circular tube segment is a first end 1a, and the outer end of the thick circular tube segment is a second end 1c. The oblique through hole 1b is provided on the side wall of the thin circular tube segment. A scale line 1d is provided on the inner side wall of the thick circular tube segment corresponding to the oblique through hole 1b. On the end face of the fixing seat 3 near the scale line 1d, the corresponding air path through hole I3c and air path through hole II3d are scale areas I and II, respectively. Scale rulers are provided in the scale areas I and II, respectively. A pipe is provided in the middle of the fixing seat 3. The thin circular tube segment of the untwisting tube 1 is inserted into the pipe in the middle of the fixing seat 3 to form a rotational fit.

[0058] A cavity 4a is set in the above-mentioned base 4, and the bottom of the cavity 4a is open. A base sealing plate 5 is installed on the opening, and an air inlet 5a of the base 4 is set on the base sealing plate 5. An air outlet 4b is set on the end face where the base 4 and the fixing seat 3 are connected, and the air outlet 4b is communicated with the cavity 4a. A sealing gasket 6 is set between the fixing seat 3 and the base 4, and a through hole 6a and a screw hole are set on the sealing gasket 6. Corresponding screw holes are set on the base 4 and the fixing seat 3. The air outlet 4b on the base 4 is aligned with the through hole 6a on the sealing gasket 6, and the base 4, the sealing gasket 6 and the fixing seat 3 are connected and fixed as a whole through two connecting screws I7 and one connecting screw II9.

[0059] like Figure 18 As shown, a housing air inlet 2a is provided at the lower portion of the fixing base housing 2, through which gas enters.

[0060] Example 2 not only optimizes the air passage, but also changes the effective untwisting length of the yarn on the same carrier, which improves the untwisting effect of high-twist and high-count yarns. Compared with Example 1, Example 2 has fewer parts production, processing, and assembly steps, reducing production costs.

[0061] The device of the utility model has the untwisting capability of both Z twist and S twist, can be adjusted according to actual conditions, does not need to replace configuration parts, and saves costs and labor.

[0062] See also Figures 1-14 The present invention provides a method for using the yarn untwisting device of the first embodiment, the method comprising the following steps:

[0063] Step 1: Compressed air enters the cavity 4a of the base 4 through the air inlet 5a of the base 4, is discharged from the air outlet 4b of the base 4 through the pipe connected thereto, and then enters the semicircular air path 3b from the semicircular air path inlet 3a of the fixing base 3. The gas flows smoothly in the semicircular air path 3b.

[0064] Step 2: According to the twist direction of the yarn, the relative position of the oblique through hole 1b on the side wall of the untwisting tube 1 is adjusted in the semicircular air passage 3b of the fixed seat 3 by rotating the untwisting tube 1; if the twist direction of the yarn is Z twist, the untwisting tube 1 is rotated so that the oblique through hole 1b thereon is connected with the air passage hole 13 in the semicircular air passage 3b, and the compressed air in the fixed seat 3 flows from the air passage 3d into the oblique through hole 1b of the untwisting tube 1, forming a rotating airflow in the channel of the untwisting tube 1. When the compressed air flows into the untwisting tube 1 through the oblique through hole 1b, a negative pressure is formed at the first end 1a of the untwisting tube 1. The yarn end that needs to be untwisted is sucked into the untwisting tube 1 to untwist the yarn; if the twist direction of the yarn is S twist, the untwisting tube 1 is rotated so that the oblique through hole 1b thereon is connected with the air path through hole II3d in the semicircular air path channel 3b, and the compressed air in the fixed seat 3 flows into the oblique through hole 1b of the untwisting tube 1 from the air path channel 3b, forming a rotating airflow in the channel of the untwisting tube 1. When the compressed air flows into the untwisting tube 1 through the oblique through hole 1b, a negative pressure is formed at the first end 1a of the untwisting tube 1, and the yarn end that needs to be untwisted is sucked into the untwisting tube 1 to untwist the yarn.

[0065] In order to better adapt to the inherent characteristics of the yarn: the method of use of the present invention also includes a method for accurately rotating and adjusting the relative position of the oblique through hole 1b on the side wall of the untwisting tube 1 in the semicircular air path 3b of the fixed seat 3 according to the inherent characteristics of the yarn. The specific steps are as follows: first, the scale line 1d of the untwisting tube 1 is turned to the range of the scale area I or the scale area II, and then the scale line 1d of the untwisting tube 1 is fine-tuned to align with a certain scale of the scale in the scale area I or the scale area II, so as to achieve precise adjustment of the overlapping opening size between the oblique through hole 1b of the untwisting tube 1 and the air path through hole I3c or the air path through hole II3d to meet the inherent characteristics of different yarns.

[0066] The method of using the yarn untwisting device in Example 2 of the present invention is similar to that in Example 1, so it will not be described in detail.

[0067] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A yarn untwisting device, comprising an untwisting tube, a fixing seat and a base connected in sequence, wherein an air inlet and an air outlet are provided on the base, characterized in that: The fixing seat is placed in a fixing seat shell, and the two are tightly connected in a detachable manner to form a semicircular air path or an annular air path. The semicircular air path or the annular air path is provided with an air path hole I and an air path hole II. An oblique hole is provided on the side wall of one end of the untwisting tube. The untwisting tube is axially fitted into the fixing seat and connected to the fixing seat in a rotationally adjustable manner. The oblique hole is communicated with the air path hole I or the air path hole II and is used for untwisting Z-twisted or S-twisted yarns. The fixing seat (3) is detachably connected to the base, and the air outlet on the base is communicated with the semicircular air path or the annular air path.

2. The yarn untwisting device according to claim 1, characterized in that The fixing seat is provided with a semicircular groove, and the air path through hole I and the air path through hole II are provided on the bottom surface of the semicircular groove. The fixing seat shell is provided with an accommodating cavity. The fixing seat is placed in the accommodating cavity of the fixing seat shell. The semicircular groove and the side wall of the accommodating cavity form a semicircular air path channel. The fixing seat and the fixing seat shell are correspondingly provided with tightening screw holes, and a tightening screw is inserted into the tightening screw hole. The end of the tightening screw is pressed against the outer wall of the untwisting tube in the fixing seat, so as to fix the untwisting tube 1 that is rotated and adjusted to a set position.

3. The yarn untwisting device according to claim 1, characterized in that: The fixing seat is cylindrical, and a circular ring groove is provided on the middle side wall of the fixing seat. The air path through hole I and the air path through hole II are provided on the bottom surface of the circular ring groove. The fixing seat shell is provided with a cylindrical accommodating cavity. The fixing seat is placed in the cylindrical accommodating cavity of the fixing seat shell. The circular ring groove and the side wall of the cylindrical accommodating cavity form an annular air path channel. The fixing seat and the fixing seat shell are correspondingly provided with tightening screw holes, and a tightening screw is inserted into the tightening screw hole. The end of the tightening screw presses against the outer wall of the untwisting tube inserted in the fixing seat, so as to fix the untwisting tube that is adjusted to a set position.

4. The yarn untwisting device according to any one of claims 1 to 3, characterized in that: The included angle between the axes of the gas path through hole I and the gas path through hole II is 80-100 degrees.

5. The yarn untwisting device according to any one of claims 1 to 3, characterized in that: A pipe is provided in the fixing seat (3), and the untwisting pipe (1) comprises a thin round pipe section and a thick round pipe section, the outer end of the thin round pipe section is a first end, and the outer end of the thick round pipe section is a second end, the oblique through hole is provided on the side wall of the thin round pipe section, and a scale line is provided on the inner end side wall of the thick round pipe section corresponding to the oblique through hole, and the end surface of the fixing seat close to the scale line has scale areas I and scale areas II corresponding to the air path through hole I and the air path through hole II, respectively, and scale rulers are provided on the scale areas I and II; a pipe is provided in the middle of the fixing seat, and the thin round pipe section of the untwisting pipe is inserted into the pipe in the middle of the fixing seat to form a rotational fit.

6. The yarn untwisting device according to claim 4, characterized in that: A pipe is arranged in the fixing seat, and the untwisting tube includes a thin round tube segment and a thick round tube segment. The outer end of the thin round tube segment is the first end, and the outer end of the thick round tube segment is the second end. The oblique through hole is arranged on the side wall of the thin round tube segment, and a scale line is arranged on the inner end side wall of the thick round tube segment corresponding to the oblique through hole. The end surface of the fixing seat close to the scale line has scale area I and scale area II corresponding to the air path through hole I and the air path through hole II respectively, and scale rulers are respectively arranged on the scale area I and the scale area II; a pipe is arranged in the middle of the fixing seat, and the thin round tube segment of the untwisting tube is inserted into the pipe in the middle of the fixing seat to form a rotational fit.

7. The yarn untwisting device according to any one of claims 1 to 3, characterized in that: A cavity is provided in the base, the bottom of the cavity is open, a base sealing plate is installed on the opening, the air inlet of the base is provided on the base sealing plate, the air outlet is provided on the end surface where the base and the fixing seat are connected, the air outlet is communicated with the cavity, a sealing gasket is provided between the fixing seat and the base, a through hole and a screw hole are provided on the sealing gasket, screw holes are provided on the base and the fixing seat accordingly, the air outlet on the base is aligned with the through hole on the sealing gasket, and the base, the sealing gasket and the fixing seat are connected and fixed as a whole by connecting screws I and connecting screws II.

8. The yarn untwisting device according to claim 6, characterized in that: A cavity is provided in the base, the bottom of the cavity is open, a base sealing plate is installed on the opening, the air inlet of the base is provided on the base sealing plate, the air outlet is provided on the end surface where the base and the fixing seat are connected, the air outlet is communicated with the cavity, a sealing gasket is provided between the fixing seat and the base, a through hole and a screw hole are provided on the sealing gasket, screw holes are provided on the base and the fixing seat accordingly, the air outlet on the base is aligned with the through hole on the sealing gasket, and the base, the sealing gasket and the fixing seat are connected and fixed as a whole by connecting screws I and connecting screws II.

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