A vortex spinning slub yarn spinning device and spinning process

Abstract

The present application relates to a vortex spinning slub yarn spinning device and a spinning process, which belongs to the technical field of spinning. The device includes a front roller, a middle roller and a rear roller, and is characterized in that it also includes: a control unit, the control unit includes a controller, an encoder and a servo motor, the encoder is used to detect the rotation speed of the front roller and output an electrical signal, the controller receives the electrical signal and feeds back to the servo motor, the servo motor is used to drive the middle roller to rotate, and the servo motor rhythmically adjusts the rotation speed of the middle roller; a base, the encoder is fixed on the base, and the base is detachably connected to the body of the vortex spinning machine. The present application has the effect of enabling vortex spinning to produce slub yarn.

Description

Technical Field

[0001] The present application relates to the technical field of spinning, and in particular to a vortex spinning slub yarn spinning device and a spinning process. Background Art

[0002] Slub yarn is a special style of yarn that is obtained by making the yarn density change regularly or irregularly in its length direction during the spinning process. The formation of slub is due to overfeeding and weak twisting of the variable speed roller system during spinning.

[0003] Slubby yarn is currently mainly produced by air-end spinning and ring spinning. The production capacity of air-end spinning and ring spinning is limited, while vortex spinning has high production efficiency. However, the existing vortex spinning cannot produce slubby yarn. Summary of the Invention

[0004] In order to enable vortex spinning to produce slub yarn, the present application provides a vortex spinning slub yarn spinning device and spinning process.

[0005] In a first aspect, the present application provides a vortex spinning slub yarn spinning device, which adopts the following technical solution:

[0006] A vortex spinning slub yarn spinning device comprises a front roller, a middle roller and a back roller, and further comprises:

[0007] The control unit includes a controller, an encoder, and a servo motor. The encoder is used to detect the rotation speed of the front roller and output an electrical signal. The controller receives the electrical signal and feeds it back to the servo motor. The servo motor is used to drive the middle roller to rotate, and the servo motor rhythmically adjusts the rotation speed of the middle roller.

[0008] The encoder is fixed on the base, and the base is detachably connected to the body of the vortex spinning machine.

[0009] By adopting the above technical solution, the speed of the middle roller is adjusted by the servo motor. When the speed of the middle roller is less than that of the front roller, the yarn becomes thicker, and when the speed of the middle roller is greater than that of the front roller, the yarn becomes thinner. When the speed of the middle roller is changed rhythmically, the yarn changes thickness regularly, thereby enabling vortex spinning to produce slub yarn.

[0010] Optionally, a mounting bracket is provided on the base, the mounting bracket includes a planar adjustment portion, the planar adjustment portion includes a first adjustment plate and a second adjustment plate, one end of the first adjustment plate overlaps with one end of the second adjustment plate, a rotating shaft passes through the overlap of the first adjustment plate and the second adjustment plate, both ends of the rotating shaft are threaded with locking nuts, the two locking nuts respectively press against the first adjustment plate and the second adjustment plate, the end of the first adjustment plate away from the second adjustment plate is connected to the base, and the end of the second adjustment plate away from the first adjustment plate is connected to the encoder.

[0011] Different vortex spinning machines have different structures, so the distance between the encoder installation position and the front roller is different. By adopting the above technical solution, after loosening the locking nut, the distance between the encoder and the front roller can be adjusted through the first adjustment plate and the second adjustment plate, thereby adapting to a variety of vortex spinning machine models.

[0012] Optionally, one end of the first adjustment plate away from the second adjustment plate is hinged to the base;

[0013] The mounting bracket also includes a vertical adjustment part, which includes an adjusting screw and a fixed rod. The adjusting screw is slidably connected in the fixed rod, and the end of the adjusting screw away from the fixed rod is connected to the first adjustment plate. The end of the fixed rod away from the adjusting screw is hinged to the base, and an adjusting screw sleeve is threadedly connected to the adjusting screw, and the adjusting screw sleeve is rotatably connected to the fixed rod.

[0014] Different vortex spinning machines have different structures, so the space on the vortex spinning machine that can accommodate the encoder may have a height difference with the central axis of the front roller. By adopting the above technical solution, the length of the adjusting screw extending out of the fixed rod is changed by rotating the adjusting screw sleeve, so that the first adjusting plate can be raised and lowered in the vertical plane, thereby further adapting to a variety of vortex spinning machine models.

[0015] Optionally, a sliding cavity is provided in the fixed rod for the adjusting screw to pass through, a limit block is fixedly provided in the sliding cavity of the fixed rod, and a limit groove is provided on the outer wall of the adjusting screw to slide with the limit block.

[0016] By adopting the above technical solution, when the adjusting screw slides, the limit block slides in the limit groove, so that the limit block makes it difficult for the adjusting screw to rotate with the adjusting sleeve, thereby achieving the effect of guiding and limiting the adjusting screw.

[0017] Optionally, a slide is sleeved on the first adjustment plate, and the end of the adjustment screw away from the fixed rod is hinged to the slide. The internal thread of the slide is connected to a locking screw, and the locking screw is used to tighten the first adjustment plate.

[0018] By adopting the above technical solution, after loosening the locking screw, the slide can slide on the first adjustment plate, thereby further expanding the range of the angle between the first adjustment plate and the adjusting screw, and then further expanding the range of the encoder height adjustment, thereby further achieving the effect of adapting to a variety of vortex spinning machine models.

[0019] Optionally, the mounting bracket further includes a clamping portion, a position adjusting portion and a reversing portion;

[0020] The clamping portion includes a mounting tube and a clamping block. The mounting tube is a hollow structure. A plurality of through slots are formed on the outer wall of the mounting tube. The through slots are connected to the inner ring of the mounting tube. The plurality of through slots are arranged around the center of the mounting tube. The clamping block is slidably connected in the through slots.

[0021] The position adjusting portion is used to adjust the position of the clamping block in the through slot;

[0022] The commutating portion is used to adjust the direction of the encoder.

[0023] By adopting the above technical solution, the position of the clamping block is adjusted through the adjustment part, thereby adjusting the diameter of the circle formed by multiple clamping blocks, thereby being able to clamp encoders of different specifications, and the direction of the mounting tube can be adjusted through the reversing part, thereby adjusting the direction of the encoder, thereby making the installation position of the base more flexible.

[0024] Optionally, the adjustment part includes a movable sleeve and a reset block, the movable sleeve is arranged on the mounting tube and the two are threadedly connected, the clamping block is provided with an inclined surface for the movable sleeve to be squeezed, the reset block is fixed on the clamping block, and the inner wall of the mounting tube at the through groove is provided with a reset groove that is slidably adapted to the reset block, and a reset spring is provided in the reset groove, and the two ends of the reset spring are respectively fixedly connected to the reset block and the mounting tube.

[0025] By adopting the above technical solution, the staff rotates the movable sleeve to change the position of the movable sleeve, thereby changing the contact position of the movable sleeve on the clamping block, thereby changing the degree of compression of the clamping block, and cooperating with the reset spring to make the clamping block slide in the through groove, thereby achieving the effect of adjusting the position of the clamping block in the through groove.

[0026] Optionally, the reversing portion includes a reversing roller and a reversing screw;

[0027] The reversing roller is rotatably connected between the second adjustment plate and the mounting cylinder, a ratchet is fixedly connected to the reversing roller, and pawls adapted to the ratchet are provided on both sides of the ratchet, the pawls are rotatably connected to the second adjustment plate, and a torsion spring is installed at the connection between the pawls and the second adjustment plate;

[0028] The reversing screw rod passes through the second adjusting plate and the two are threadedly connected. One end of the reversing screw rod is rotatably connected to the reversing block, and the reversing block is hinged to the mounting cylinder.

[0029] Using the above technical solution, the staff rotates the reversing roller to change the orientation of the mounting tube in the horizontal plane, thereby changing the orientation of the encoder in the horizontal plane. After the horizontal plane orientation of the encoder is adjusted, the two ratchets are simultaneously engaged with a pawl to make the reversing roller remain stable and will not rotate; the staff rotates the reversing screw to change the orientation of the vertical screen of the mounting tube, thereby changing the orientation of the encoder in the vertical plane. The reversing screw and the second adjustment plate are threadedly connected, and the threaded connection is self-locking, so the reversing screw remains stable.

[0030] In a second aspect, the present application provides a vortex spinning slub yarn spinning process, which adopts the following technical solutions:

[0031] A vortex spinning slub yarn spinning process comprises the following steps:

[0032] S1, the front roller and the back roller continue to use the original vortex spinning drive motor, disconnect the middle roller from the original vortex spinning drive motor, keep the original middle roller drive motor running continuously, and install a servo motor to drive the middle roller to rotate;

[0033] S2. An encoder is installed to detect the speed of the front roller. The speed of the middle roller controlled by the servo motor fluctuates rhythmically based on the speed of the front roller.

[0034] By adopting the above technical solution, the original drive motor of the vortex spinning roller keeps running, thereby ensuring the normal operation of the vortex spinning equipment monitoring system and reducing the difficulty of vortex spinning modification.

[0035] Optionally, two groups of rear rollers are provided, and the two groups of rear rollers are driven by a gear set, and the transmission ratio of the gear set is 5:1.

[0036] By adopting the above technical solution, the rear drive traction multiple is 5 times, which makes the slub yarn more obvious, thereby improving the quality of the slub yarn.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. The original drive motor of the middle roller keeps running, thus ensuring the normal operation of the vortex spinning equipment monitoring system and reducing the difficulty of vortex spinning transformation; the speed of the middle roller is adjusted by the servo motor, and the speed of the middle roller is changed rhythmically, so that the yarn thickness changes regularly, thereby enabling vortex spinning to produce slub yarn.

[0039] 2. The distance between the encoder and the front roller is adjusted using the first and second adjustment plates. The length of the adjustment screw extending from the fixed rod is changed by turning the adjustment screw, thereby raising and lowering the first adjustment plate within the vertical plane. The slide is slid across the first adjustment plate to further expand the angle between the first adjustment plate and the adjustment screw. The encoder's orientation is adjusted by rotating the reversing roller and reversing screw. This approach allows for greater flexibility in the base's installation position, reducing constraints imposed by the vortex spinning machine model. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic structural diagram of a vortex spinning slub yarn spinning device according to an embodiment of the present application;

[0041] Figure 2 This is a system guide diagram for reflecting the operation of the servo motor in the embodiment of the present application;

[0042] Figure 3 Schematic diagram of the structure of the plane adjustment part and the vertical adjustment part in the embodiment of the present application;

[0043] Figure 4 It is a partial cross-sectional view showing the positions of the limiting block and the limiting groove in the embodiment of the present application;

[0044] Figure 5 This is a schematic diagram showing the structure of the clamping portion and the reversing portion in the embodiment of the present application;

[0045] Figure 6 yes Figure 5 A partial enlarged schematic diagram of part A;

[0046] Figure 7 This is a cross-sectional view showing the position adjustment portion in the embodiment of the present application;

[0047] Figure 8 yes Figure 7 A partial enlarged schematic diagram of part B.

[0048] Explanation of the accompanying drawings: 1. encoder; 2. base; 3. plane adjustment part; 31. first adjustment plate; 32. second adjustment plate; 4. rotating shaft; 41. locking nut; 5. vertical adjustment part; 51. adjusting screw; 511. adjusting screw sleeve; 512. limiting groove; 52. fixing rod; 521. sliding cavity; 522. limiting block; 6. sliding seat; 61. locking screw; 7. clamping part; 71. mounting cylinder; 711. through groove; 712. reset groove; 713. reset spring; 72. clamping block; 721. inclined surface; 8. adjusting part; 81. movable sleeve; 811. handwheel; 82. reset block; 9. reversing part; 91. reversing roller; 911. ratchet; 912. pawl; 913. torsion spring; 92. reversing screw; 921. reversing block; 922. knob DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-8 This application is described in further detail.

[0050] The embodiments of the present application disclose a vortex spinning slub yarn spinning device and a spinning process.

[0051] refer to Figure 1 A vortex spinning slub yarn spinning device includes a vortex spinning machine, a control unit and a base 2. The vortex spinning machine includes a front roller, a middle roller and a rear roller. The front roller and the rear roller are driven by the driving motor of the vortex spinning machine. The control unit is used to rhythmically adjust the speed of the middle roller. The control unit is installed on the base 2.

[0052] The control unit adjusts the speed of the middle roller according to the speed of the front roller, so that the speed of the middle roller changes from less than the speed of the front roller to greater than the speed of the front roller, and then changes from greater than the speed of the front roller to less than the speed of the front roller, thereby repeatedly and rhythmically adjusting the speed of the middle roller.

[0053] refer to Figure 2 The control unit includes a controller, an encoder 1 and a servo motor. The encoder 1 is used to detect the rotation speed of the front roller and output an electrical signal. The controller receives the electrical signal output by the encoder 1 and feeds it back to the servo motor. The servo motor is used to drive the middle roller to rotate.

[0054] refer to Figure 1 The base 2 can be detachably connected to the body of the vortex spinning vehicle, and can be detachably connected by magnetic attraction or by bolts. A mounting bracket is provided on the base 2, and the mounting bracket includes a plane adjustment part 3 and a vertical adjustment part 5.

[0055] refer to Figure 3 The plane adjustment part 3 includes a first adjustment plate 31 and a second adjustment plate 32. One end of the first adjustment plate 31 is hinged to the base 2, and the other end of the first adjustment plate 31 overlaps with one end of the second adjustment plate 32. The overlapping part of the first adjustment plate 31 and the second adjustment plate 32 is penetrated by a rotating shaft 4, and both ends of the rotating shaft 4 are threadedly connected with locking nuts 41. The two locking nuts 41 are respectively pressed against the first adjustment plate 31 and the second adjustment plate 32.

[0056] refer to Figure 3 The first adjustment plate 31 is sleeved with a slide 6 and the two are slidably fitted therebetween. The slide 6 is internally threaded with a locking screw 61 , which presses against the first adjustment plate 31 .

[0057] refer to Figure 3 and Figure 4 The vertical adjustment part 5 includes an adjusting screw 51 and a fixed rod 52. One end of the fixed rod 52 is hinged to the base 2. The adjusting screw 51 is slidably connected to the fixed rod 52. A sliding cavity 521 is provided in the fixed rod 52 for the adjusting screw 51 to pass through. A limit block 522 is fixed in the sliding cavity 521 of the fixed rod 52. The outer wall of the adjusting screw 51 is provided with a limit groove 512 that is slidably adapted to the limit block 522.

[0058] refer to Figure 3 One end of the adjusting screw 51 away from the fixed rod 52 is hinged to the slide 6, and the adjusting screw 51 is provided with an adjusting screw sleeve 511 and the two are threadedly connected. The adjusting screw sleeve 511 is rotatably connected to the fixed rod 52.

[0059] After loosening the locking nut 41 , the staff can rotate the second adjustment plate 32 , rotate the second adjustment plate 32 to a suitable position, and then tighten the locking nut 41 . At this time, the first adjustment plate 31 and the second adjustment plate 32 remain stable.

[0060] The staff rotates the adjusting screw sleeve 511 to drive the adjusting screw 51 to slide in the sliding cavity 521, thereby controlling the length of the adjusting screw 51 extending out of the fixed rod 52, thereby controlling the angle between the first adjusting plate 31 and the base 2; during the sliding of the adjusting screw 51 in the sliding cavity 521, the limit block 522 slides in the limit groove 512; after loosening the locking screw 61, the staff can slide the slide 6 on the first adjusting plate 31, thereby increasing the adjustment range of the angle between the first adjusting plate 31 and the base 2.

[0061] refer to Figure 5 and Figure 6 The mounting bracket also includes a clamping portion 7 and a reversing portion 9. The clamping portion 7 includes a mounting cylinder 71. The mounting cylinder 71 is a hollow structure. The encoder 1 is mounted in the mounting cylinder 71. The reversing portion 9 includes a reversing roller 91. One end of the reversing roller 91 is rotatably connected to the second adjustment plate 32. The other end of the reversing roller 91 is hinged to the outer wall of the mounting cylinder 71. A ratchet 911 is sleeved on the reversing roller 91 and the two are fixedly connected. Both sides of the ratchet 911 are provided with pawls 912 that are adapted to their own card engagement. The pawl 912 is rotatably connected to the second adjustment plate 32, and a torsion spring 913 is installed at the connection between the pawl 912 and the second adjustment plate 32.

[0062] refer to Figure 5 The reversing part 9 also includes a reversing screw 92, which passes through the second adjusting plate 32 and is threadedly connected to the second adjusting plate 32. One end of the reversing screw 92 is rotatably connected to a reversing block 921, and the reversing block 921 is hinged to the outer wall of the mounting cylinder 71. The other end of the reversing screw 92 is fixed with a knob 922.

[0063] refer to Figure 5 and Figure 7 The outer wall of the mounting tube 71 is provided with a plurality of through grooves 711, which are connected to the inner ring of the mounting tube 71. The plurality of through grooves 711 are evenly spaced around the center of the mounting tube 71. In the embodiment of the present application, three through grooves 711 are provided. The clamping portion 7 also includes a clamping block 72. The number of clamping blocks 72 is the same as the number of through grooves 711 and corresponds one to one. The clamping block 72 is slidably connected in the through groove 711. An inclined surface 721 is provided on one side of the clamping block 72, and the clamping block 72 is pressed against the encoder 1.

[0064] refer to Figure 7 and Figure 8The mounting bracket also includes a positioning portion 8, which includes a reset block 82. The reset block 82 is fixed on the clamping block 72. The inner wall of the mounting tube 71 at the through groove 711 is provided with a reset groove 712 that is slidably adapted to the reset block 82. A reset spring 713 is provided in the reset groove 712, and the two ends of the reset spring 713 are fixedly connected to the reset block 82 and the mounting tube 71 respectively.

[0065] refer to Figure 5 and Figure 7 The adjustment portion 8 further includes a movable sleeve 81 , which is sleeved on the mounting cylinder 71 and threadedly connected therebetween. The movable sleeve 81 squeezes the inclined surface 721 of the clamping block 72 , and a hand wheel 811 is fixed on the movable sleeve 81 .

[0066] The staff selects an encoder 1 of appropriate specifications and places the selected encoder 1 into the mounting tube 71. Then the staff rotates the handwheel 811 to drive the movable sleeve 81 to squeeze the clamping block 72. The clamping block 72 is squeezed and moves toward the direction close to the encoder 1 until the encoder 1 is pressed tightly. During the movement of the clamping block 72, the clamping block 72 drives the reset block 82 to slide in the reset groove 712. The reset block 82 compresses the reset spring 713, and the reset spring 713 accumulates elastic potential energy.

[0067] After the staff separates the pawl 912 from the ratchet 911, they rotate the reversing roller 91. At this time, the torsion spring 913 is compressed and accumulates elastic potential energy. After the reversing roller 91 is rotated, the staff releases the pawl 912. At this time, the torsion spring 913 releases the elastic force to drive the pawl 912 to engage with the ratchet 911, thereby adjusting the angle of the encoder 1 in the horizontal plane.

[0068] The staff turns the knob 922 to drive the reversing screw 92 to rotate. The reversing screw 92 moves in the second adjustment plate 32 during the rotation, so that the reversing screw 92 adjusts the angle of the mounting cylinder 71 in the vertical plane through the reversing block 921, thereby adjusting the angle of the encoder 1 in the vertical plane.

[0069] The implementation principle of the vortex spinning slub yarn spinning device of the embodiment of the present application is as follows: fix the encoder 1 in the mounting tube 71, then fix the base 2 on the vortex spinning original vehicle, and then adjust the position and angle of the encoder 1. Twisting the locking nut 41 can adjust the angle between the first adjustment plate 31 and the second adjustment plate 32; twisting the adjusting screw sleeve 511 to adjust the length of the adjusting screw 51 extending out of the fixed rod 52; loosening the locking screw 61 can adjust the position of the slide 6 on the first adjustment plate 31; rotating the reversing roller 91 and twisting the reversing screw 92 to adjust the angle of the mounting tube 71. In the above manner, the encoder 1 is installed on the vortex spinning original vehicle and the encoder 1 is aligned with the central axis of the front roller, and the speed of the middle roller is adjusted in conjunction with the control unit, so that the vortex spinning can produce slub yarn.

[0070] The embodiments of the present application also disclose a vortex spinning slub yarn spinning process.

[0071] The following steps are involved:

[0072] S1, front roller and back roller continue to use the original drive motor of vortex spinning, disconnect the middle roller from the original drive motor of vortex spinning, keep the original drive motor of the middle roller running continuously, and install a servo motor to drive the middle roller to rotate. There are two groups of back rollers, which are driven by a gear set with a transmission ratio of 5:1. The speed ratio of the group of back rollers close to the middle roller to the middle roller is 1:1.5.

[0073] S2. Encoder 1 is installed to detect the rotation speed of the front roller. The rotation speed of the middle roller controlled by the servo motor fluctuates rhythmically based on the rotation speed of the front roller.

[0074] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A vortex spinning slub yarn spinning device, comprising a front roller, a middle roller and a back roller, characterized in that: Also includes: The control unit includes a controller, an encoder (1) and a servo motor. The encoder (1) is used to detect the rotation speed of the front roller and output an electrical signal. The controller receives the electrical signal and feeds it back to the servo motor. The servo motor is used to drive the middle roller to rotate, and the servo motor rhythmically adjusts the rotation speed of the middle roller. A base (2), the encoder (1) is fixed on the base (2), and the base (2) is detachably connected to the body of the vortex spinning machine; The base (2) is provided with a mounting bracket, the mounting bracket includes a plane adjustment portion (3), the plane adjustment portion (3) includes a first adjustment plate (31) and a second adjustment plate (32), one end of the first adjustment plate (31) overlaps with one end of the second adjustment plate (32), a rotating shaft (4) passes through the overlap of the first adjustment plate (31) and the second adjustment plate (32), both ends of the rotating shaft (4) are threadedly connected with locking nuts (41), the two locking nuts (41) respectively press against the first adjustment plate (31) and the second adjustment plate (32), the end of the first adjustment plate (31) away from the second adjustment plate (32) is connected to the base (2), and the end of the second adjustment plate (32) away from the first adjustment plate (31) is connected to the encoder (1); One end of the first adjustment plate (31) away from the second adjustment plate (32) is hinged to the base (2); The mounting bracket further comprises a vertical adjustment portion (5), the vertical adjustment portion (5) comprising an adjustment screw (51) and a fixed rod (52), the adjustment screw (51) being slidably connected in the fixed rod (52), one end of the adjustment screw (51) away from the fixed rod (52) being connected to the first adjustment plate (31), one end of the fixed rod (52) away from the adjustment screw (51) being hinged to the base (2), an adjustment screw sleeve (511) being threadedly connected to the adjustment screw (51), and the adjustment screw sleeve (511) being rotatably connected to the fixed rod (52).

2. A vortex spinning slub yarn spinning device according to claim 1, characterized in that: The fixed rod (52) is provided with a sliding cavity (521) for the adjusting screw (51) to pass through, the fixed rod (52) is fixed with a limiting block (522) in the sliding cavity (521), and the outer wall of the adjusting screw (51) is provided with a limiting groove (512) that is slidably adapted to the limiting block (522).

3. The vortex spinning slub yarn spinning device according to claim 1, characterized in that: The first adjustment plate (31) is sleeved with a slide seat (6), and one end of the adjustment screw (51) away from the fixed rod (52) is hinged to the slide seat (6). The internal thread of the slide seat (6) is connected to a locking screw (61), and the locking screw (61) is used to tighten the first adjustment plate (31).

4. The vortex spinning slub yarn spinning device according to claim 1, characterized in that: The mounting bracket further comprises a clamping portion (7), a position adjustment portion (8) and a reversing portion (9); The clamping portion (7) comprises a mounting tube (71) and a clamping block (72); the mounting tube (71) is a hollow structure; a plurality of through grooves (711) are provided on the outer wall of the mounting tube (71); the through grooves (711) are communicated with the inner ring of the mounting tube (71); the plurality of through grooves (711) are arranged around the center of the mounting tube (71); and the clamping block (72) is slidably connected in the through grooves (711); The position adjustment portion (8) is used to adjust the position of the clamping block (72) in the through slot (711); The commutation portion (9) is used to adjust the direction of the encoder (1).

5. The vortex spinning slub yarn spinning device according to claim 4, characterized in that: The adjustment portion (8) comprises a movable sleeve (81) and a reset block (82), wherein the movable sleeve (81) is sleeved on the mounting tube (71) and the two are threadedly connected, the clamping block (72) is provided with an inclined surface (721) for the movable sleeve (81) to be squeezed, the reset block (82) is fixed on the clamping block (72), and the inner wall of the mounting tube (71) at the through groove (711) is provided with a reset groove (712) which is slidably adapted to the reset block (82), a reset spring (713) is provided in the reset groove (712), and the two ends of the reset spring (713) are respectively fixedly connected to the reset block (82) and the mounting tube (71).

6. The vortex spinning slub yarn spinning device according to claim 4, characterized in that: The reversing portion (9) includes a reversing roller (91) and a reversing screw (92); The reversing roller (91) is rotatably connected between the second adjustment plate (32) and the mounting cylinder (71); a ratchet (911) is fixedly connected to the reversing roller (91); ratchet pawls (912) adapted to be engaged with the ratchet pawls (911) are provided on both sides of the ratchet pawls (912); the ratchet pawls (912) are rotatably connected to the second adjustment plate (32); and a torsion spring (913) is installed at the connection between the ratchet pawls (912) and the second adjustment plate (32); The reversing screw (92) passes through the second adjusting plate (32) and the two are threadedly connected. One end of the reversing screw is rotatably connected to a reversing block (921), and the reversing block (921) is hinged to the mounting cylinder (71).

7. A vortex spinning slub yarn spinning process, characterized in that: The vortex spinning slub yarn spinning device according to claim 1 comprises the following steps: S1, the front roller and the back roller continue to use the original vortex spinning drive motor, disconnect the middle roller from the original vortex spinning drive motor, keep the original middle roller drive motor running continuously, and install a servo motor to drive the middle roller to rotate; S2. An encoder (1) is installed to detect the rotation speed of the front roller. The rotation speed of the middle roller is controlled by a servo motor and fluctuates rhythmically based on the rotation speed of the front roller.

8. A slub yarn spinning process according to claim 7, characterized in that: There are two groups of rear rollers, which are driven by a gear set with a transmission ratio of 5:1.

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