Spinning device suitable for automatic splicer rotor spinning machine

Abstract

This invention discloses a spinning device structure suitable for an automatic splicing rotor spinning machine, including a spinning device housing assembly, a shear untwisting assembly, a spinning device locking assembly, a spinning device upper cover, and a rotor brake assembly; the shear untwisting assembly, the spinning device locking assembly, and the spinning device upper cover are all fixedly installed on the spinning device housing assembly, and the rotor brake assembly is hinged to the spinning device housing assembly; the spinning device upper cover also has a groove that cooperates with the shear mechanism, and the groove is used for guiding and limiting the splicing of the yarn.

Description

Technical Field

[0001] This invention relates to the field of spinning equipment technology, and more specifically, to a spinning device structure suitable for an automatic joint type rotor spinning machine. Background Technology

[0002] Rotor spinning machines are multi-spindle machines that operate continuously 24 hours a day. During operation, yarn breaks can occur due to full bobbins, machine shutdowns, or other factors. Traditionally, yarn breakage and splicing are entirely manual, resulting in a significant workload. With the increasing automation of equipment and customers' higher demands for yarn quality, a new approach is needed to address this issue. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a spinning device structure suitable for automatic joint type rotor spinning machines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention discloses a spinning device structure suitable for an automatic splicing rotor spinning machine, including a spinning device housing assembly, a shear untwisting assembly, a spinning device locking assembly, a spinning device upper cover, and a rotor brake assembly; the shear untwisting assembly, the spinning device locking assembly, and the spinning device upper cover are all fixedly installed on the spinning device housing assembly, and the rotor brake assembly is hinged to the spinning device housing assembly; the spinning device upper cover also has a groove that cooperates with the shear mechanism, and the groove is used for guiding and limiting the splicing of the yarn.

[0006] Preferably, the shear untwisting assembly includes a shear mechanism, an untwisting seat, a yarn suction nozzle, a shear cylinder, and an exhaust pipe; the yarn suction nozzle is located at the upper end of the untwisting seat, the shear cylinder is installed on the side of the untwisting seat, the shear mechanism is installed in front of the yarn suction nozzle, the shear mechanism is located at the yarn groove, the shear mechanism is connected to the shear cylinder in a transmission manner, and the shear cylinder is used to drive the shear mechanism to perform fixed-length shearing on the spliced ​​yarn that enters the shearing range.

[0007] Preferably, the untwisting seat is provided with an air inlet, and the inner wall of the yarn suction nozzle is provided with an oblique air hole that communicates with the air inlet. The oblique air hole is located on the side of the yarn suction nozzle away from the air inlet. The air inlet is used to access compressed gas. When the compressed gas flows out through the oblique air hole, it creates a negative pressure at the suction port of the yarn suction nozzle to draw the yarn end into the yarn suction nozzle.

[0008] Preferably, the untwisting seat has an exhaust hole that communicates with the inner cavity of the yarn suction nozzle. The exhaust hole is connected to the exhaust valve through an exhaust pipe. The end face of the exhaust valve is equipped with an openable and closable sealing plate. When the yarn end is sucked into the yarn suction nozzle and passes the position of the exhaust hole, the instantaneous impact of the compressed gas causes the shear end face of the yarn end to form a loose structure, thus completing the untwisting of the yarn end. The short fibers generated by untwisting are discharged after being pushed open by the exhaust pipe and the exhaust valve with the airflow. After the compressed gas supply stops, the sealing plate returns to its original position and adheres to the end face of the exhaust valve to form a seal.

[0009] Preferably, the spinning machine housing assembly is equipped with a yarn guide tube, a yarn guide seat group, and a twist-stopping head. After untwisting, the yarn end enters the rotor of the rotor brake assembly through the yarn guide tube, the yarn guide seat group, and the twist-stopping head in sequence, where it merges with the fibers in the rotor and is twisted to complete the yarn splicing.

[0010] Preferably, the spinning machine locking assembly includes a locking base, a locking leaf spring, a leaf spring pressure plate, a locking pin, and a locking roller; the leaf spring pressure plate and the locking leaf spring are fixed to one end of the locking base from top to bottom, the locking pin is rotatably connected to the end of the locking leaf spring, the locking roller is sleeved on the locking pin, and the locking roller is made of a self-lubricating plastic material.

[0011] Preferably, a fixing nut is press-fitted onto the spinning machine housing assembly, and the upper cover of the spinning machine is fixed to the spinning machine housing assembly by bolts and fixing nuts.

[0012] Preferably, the rotor brake assembly includes a rotor seat, a rotor assembly, a brake lever, a return spring, a brake base, and a brake block; the rotor assembly is installed inside the rotor seat, with the rotor shaft portion of the rotor assembly exposed outside the rotor seat; the brake lever is hinged to the bottom of the rotor seat, a first mounting groove is formed on the upper surface of one end of the brake lever, a second mounting groove is formed at the corresponding position of the rotor seat, and the two ends of the return spring are respectively limited and installed in the first mounting groove and the second mounting groove; a limiting pad is provided below one end of the brake lever, the brake base is fixed to the other end of the brake lever, and the brake block is fixed on the brake base and corresponds to the position of the rotor shaft.

[0013] Preferably, when one end of the brake lever abuts against the limiting pad, the brake block disengages from the rotor shaft, and the rotor assembly operates normally; when one end of the brake lever disengages from the limiting pad, the spring force of the return spring drives the brake lever to rotate around the hinge point, causing the brake block to abut against the rotating rotor shaft, and braking of the rotor shaft is achieved through friction.

[0014] Preferably, the spinning machine housing assembly has threaded mounting holes for fixing the shear untwisting assembly and locking nuts for fixing the spinning machine locking assembly.

[0015] The beneficial effects of this invention are: automatically cutting the yarn at the yarn splicing point ensures consistent end length and untwisting the end length, which greatly improves the quality and consistency of the yarn splicing; replacing the original manual auxiliary braking with automatic braking reduces impact damage to the rotor bearing and improves the service life of the rotor bearing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a spinning device structure applicable to an automatic joint type rotor spinning machine in this embodiment;

[0017] Figure 2 This is an installation diagram of a spinning device structure applicable to an automatic joint type rotor spinning machine in this embodiment;

[0018] Figure 3 This is a schematic diagram of one structure of the spinner housing assembly in this embodiment;

[0019] Figure 4 This is a schematic diagram of one structure of the shear untwisting assembly in this embodiment;

[0020] Figure 5 This is a schematic diagram of one installation of the yarn suction nozzle in this embodiment;

[0021] Figure 6 This is a schematic diagram of one structure of the spinning machine locking assembly in this embodiment;

[0022] Figure 7 This is a schematic diagram of one structure of the rotor brake assembly in this embodiment.

[0023] Reference numerals: 1. Spinner housing assembly; 101. Threaded mounting hole; 102. Locking nut; 103. Cover fixing nut; 2. Scissor untwisting assembly; 201. Yarn untwisting support; 202. Untwisting seat; 203. Yarn suction nozzle; 204. Scissor mechanism; 205. Scissor cylinder; 206. Exhaust pipe; 207. Exhaust valve; 208. Sealing plate; 209. Air inlet; 210. Exhaust port; 211. Angled air hole; 3. Spinner locking assembly; 301. Locking fixing seat; 302. Locking leaf spring; 303. Leaf spring pressure plate; 304. Locking pin; 305. Locking roller; 4. Spinner upper cover; 401. Opening and closing handle groove; 402. Thread groove; 5. Rotor brake assembly; 501. Rotor seat; 502. Rotor assembly; 503. Rotor shaft; 504. Brake lever; 505. Return spring; 506. Brake seat; 507. Brake block. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1-7 As shown, a spinning device structure suitable for an automatic joint type rotor spinning machine includes a spinning device housing assembly 1, a scissor untwisting assembly 2, a spinning device locking assembly 3, a spinning device upper cover 4, and a rotor brake assembly 5.

[0026] The spinning machine housing assembly 1 serves as the mounting base for the entire spinning machine mechanism. It is integrally cast from high-strength aluminum alloy, possessing excellent structural rigidity and dimensional stability. As shown in Figure 3, the spinning machine housing assembly 1 has two sets of threaded mounting holes 101 for fixing the shear untwisting assembly 2, a locking nut 102 for fixing the spinning machine locking assembly 3, and a cover fixing nut 103 for fixing the upper cover 4 of the spinning machine. Both the locking nut 102 and the cover fixing nut 103 are fixed to the spinning machine housing assembly 1 using a press-fitting process, resulting in high connection strength. The shear untwisting assembly 2, the spinning machine locking assembly 3, and the upper cover 4 of the spinning machine are all installed in their respective pre-set mounting positions on the spinning machine housing assembly 1 using fixing bolts. The rotor brake assembly 5 is hinged to the spinning machine housing assembly 1 via a hinge shaft, allowing it to be flipped open and closed around the hinge shaft, facilitating daily maintenance and cleaning.

[0027] The spinning machine mechanism has three main functions: automatic yarn cutting at a fixed length, automatic yarn feeding into the rotor, and automatic untwisting of the yarn. It can be used in conjunction with the automatic yarn feeding and automatic yarn guiding mechanisms of rotor spinning machines to complete the entire automatic splicing process without manual intervention.

[0028] like Figure 4 , 5As shown in Figure 6, the scissor untwisting assembly 2 includes a yarn untwisting support 201, an untwisting seat 202, a yarn suction nozzle 203, a scissor mechanism 204, a scissor cylinder 205, an exhaust pipe 206, an exhaust valve 207, and a sealing plate 208. The yarn untwisting support 201 is installed in the threaded mounting hole 101 of the spinning machine housing assembly 1 by fixing bolts. The untwisting seat 202 is fixed to the yarn untwisting support 201 by self-tapping bolts. The yarn suction nozzle 203 is embedded in the central hole of the untwisting seat 202, and the inner cavity of the yarn suction nozzle 203 communicates with the central hole of the untwisting seat 202. The scissor mechanism 204 is fixed to the upper end of the yarn untwisting support 201, and the cylinder body of the scissor cylinder 205 is fixed to the untwisting seat 202. The piston rod of the scissor cylinder 205 is connected to the moving blade of the scissor mechanism 204. When the splicing yarn is fed to the cutting range of the scissor mechanism 204 by the yarn feeding mechanism at the upper end of the spinning machine, the piston rod of the scissor cylinder 205 extends, driving the moving blade of the scissor mechanism 204 to mesh with the fixed blade, performing fixed-length cutting on the splicing yarn, ensuring that the yarn end length is consistent after each cutting, laying the foundation for the consistency of subsequent splicing quality.

[0029] The untwisting seat 202 has an air inlet 209 on its side wall. The outer end of the air inlet 209 is used to connect to the compressed gas pipeline of the spinning machine. The inner wall of the yarn suction nozzle 203 has an oblique air hole 211 that communicates with the air inlet 209. The outlet direction of the oblique air hole 211 is inclined inward along the axial direction of the yarn suction nozzle 203. The oblique air hole 211 is located on the side of the yarn suction nozzle 203 away from the air inlet 209. When compressed gas enters the oblique air hole 211 through the air inlet 209 and flows out at high speed, a stable negative pressure environment is formed at the suction port of the yarn suction nozzle 203. This automatically sucks the yarn end cut by the scissor mechanism 204 into the inner cavity of the yarn suction nozzle 203, realizing automatic yarn end sucking without manual yarn feeding.

[0030] The side wall of the untwisting seat 202 is also provided with an exhaust hole 210 that communicates with the inner cavity of the yarn suction nozzle 203. The outer end of the exhaust hole 210 is connected to the air inlet end of the exhaust valve 207 through the exhaust pipe 206. The air outlet end face of the exhaust valve 207 is fitted with an openable and closable sealing plate 208. When the yarn end is sucked into the yarn suction nozzle 203 and passes the corresponding position of the exhaust hole 210, the high-speed flowing compressed gas forms an instantaneous airflow impact, which acts on the shearing end face of the yarn end, causing the originally neatly sheared yarn end face fibers to spread out and form a loose structure, thereby completing the automatic untwisting of the yarn end. The untwisted yarn end fibers are fluffy and easier to condense and twist with the fibers in the rotor, greatly improving the strength and stability of the joint. Meanwhile, the short fibers generated during the untwisting process will enter the exhaust valve 207 through the exhaust pipe 206 with the airflow. After the airflow pressure pushes open the sealing plate 208, the short fibers will be discharged outside the spinning machine with the airflow. When the untwisting action is completed, the compressed gas stops supplying to the air inlet 209, the negative pressure in the yarn suction nozzle 203 disappears, the airflow pressure in the exhaust valve 207 returns to zero, the sealing plate 208 resets, and re-adheres to the end face of the exhaust valve 207 to form a seal, preventing external fly waste and impurities from entering the spinning machine.

[0031] The spinning machine housing assembly 1 is also fixed with a yarn guide tube, a yarn guide seat group and a twist-stopping head. The yarn inlet end of the yarn guide tube is connected to the yarn outlet end of the yarn suction nozzle 203. After the yarn end is untwisted, it is pulled by the subsequent yarn guide mechanism and enters the rotor of the rotor brake assembly 5 in sequence through the yarn guide tube, the yarn guide seat group and the twist-stopping head. It merges and twists with the fiber bundle that is condensed at high speed in the rotor, and finally completes the automatic splicing operation.

[0032] As shown in Figure 6, the spinning machine locking assembly 3 includes a locking fixing seat 301, a locking leaf spring 302, a leaf spring pressure plate 303, a locking pin 304, and a locking roller 305. The locking fixing seat 301 is installed in a preset position on the spinning machine housing assembly 1 by fixing bolts. The leaf spring pressure plate 303 and the locking leaf spring 302 are stacked from top to bottom and locked to the locking fixing seat 301 by fixing bolts. The leaf spring pressure plate 303 is used to press and limit the locking leaf spring 302 to ensure the installation stability of the locking leaf spring 302. The locking pin 304 is rotatably connected to the end of the locking leaf spring 302. The locking roller 305 is sleeved on the outer wall of the locking pin 304 and can rotate freely around the locking pin 304. The locking roller 305 is made of self-lubricating plastic material, such as nylon 66 and polytetrafluoroethylene, which has excellent self-lubricating properties, wear resistance and impact resistance. There is no obvious wear during long-term opening and closing operations, and the locking force is stable, effectively avoiding the problems of easy wear and loosening of traditional metal locking structures.

[0033] The upper cover 4 of the spinning machine is fixed to the upper end of the spinning machine housing assembly 1 by bolts engaging with the cover fixing nut 103 pressed onto the spinning machine housing assembly 1, thus protecting the internal mechanisms of the spinning machine. Figure 2 As shown, the upper surface of the upper cover 4 of the spinning machine has an integrated opening and closing handle groove 401. This eliminates the need for a separate opening and closing handle assembly, allowing operators to easily open and close the spinning machine via the handle groove 401, significantly simplifying the equipment structure and assembly process. Simultaneously, the integrated design eliminates the assembly gaps of traditional split handles, greatly improving the sealing performance of the upper cover and providing excellent dustproofing. The side wall of the upper cover 4 of the spinning machine also has a groove 402 that cooperates with the scissor mechanism 204. The groove 402 guides and limits the yarn during splicing, ensuring that the yarn accurately enters the cutting range of the scissor mechanism 204 and improving the reliability of the cutting action.

[0034] As shown in Figure 7, the rotor brake assembly 5 includes a rotor seat 501, a rotor assembly 502, a brake lever 504, a return spring 505, a brake base 506, and a brake block 507. The rotor seat 501 is hinged to the lower end of the spinneret housing assembly 1 via a hinge shaft. The rotor assembly 502 is fixedly installed in the mounting cavity of the rotor seat 501, and the rotor shaft 503 of the rotor assembly 502 is partially exposed on the side wall of the rotor seat 501.

[0035] Brake lever 504 is hinged to the lower part of rotor seat 501 via a hinge shaft. A first mounting groove is formed on the upper surface of one end of brake lever 504, and a second mounting groove is formed on the lower surface of rotor seat 501 corresponding to the first mounting groove. Return spring 505 is a compression spring; its upper end is limited and installed in the second mounting groove and connected to the bottom of the groove, while its lower end is limited and installed in the first mounting groove and connected to the bottom of the groove. A limiting pad is provided below the drive end of brake lever 504, fixed to the frame of the spinning machine, to limit the initial position of brake lever 504. Brake seat 506 is fixed to the other end of brake lever 504 by bolts. Brake block 507 is fixed to the upper surface of brake seat 506, and the position of brake block 507 corresponds to the exposed section of rotor shaft 503. Brake block 507 is made of wear-resistant rubber, ensuring smooth braking and a stable coefficient of friction.

[0036] When the spinning machine is in its normal operating position, the drive end of the brake lever 504 abuts against the upper surface of the limiting pad. The supporting force of the limiting pad overcomes the elastic force of the return spring 505, causing the brake lever 504 to rotate around the hinge axis. This causes the brake block 507 at the braking end to lift upwards and completely disengage from the rotor shaft 503. At this time, the rotor shaft 503 can rotate, and the rotor assembly 502 can perform normal spinning operations. When the yarn breaks or the equipment needs to be stopped, the drive end of the brake lever 504 flips with the spinning machine, disengaging from the limiting pad. At this time, the elastic force of the return spring 505 is released, pushing the drive end of the brake lever 504 to swing downwards. The brake lever 504 rotates around the hinge axis, causing the brake block 507 at the braking end to swing upwards, making the brake block 507 tightly abut against the outer wall of the rotating rotor shaft 503. The rotor shaft 503 is smoothly braked through friction. This braking structure replaces the traditional manual auxiliary braking and rigid braking structure. The braking process is smooth and controllable, which greatly reduces the impact damage to the rotor bearing during braking and effectively extends the service life of the rotor bearing and rotor assembly.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A spinning device structure suitable for an automatic joint-type rotor spinning machine, characterized in that, The device includes a spinning machine housing assembly (1), a scissor untwisting assembly (2), a spinning machine locking assembly (3), a spinning machine upper cover (4), and a rotor brake assembly (5). The scissor untwisting assembly (2), the spinning machine locking assembly (3), and the spinning machine upper cover (4) are all fixedly installed on the spinning machine housing assembly (1), and the rotor brake assembly (5) is hinged to the spinning machine housing assembly (1). The spinning machine upper cover (4) is also provided with a groove (402) that cooperates with the scissor mechanism (204). The groove (402) is used for guiding and limiting the splicing yarn.

2. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 1, characterized in that, The shear untwisting assembly (2) includes a shear mechanism (204), an untwisting seat (202), a yarn suction nozzle (203), a shear cylinder (205), and an exhaust pipe (206). The yarn suction nozzle (203) is located at the upper end of the untwisting seat (202), the shear cylinder (205) is installed on the side of the untwisting seat (202), the shear mechanism (204) is installed in front of the yarn suction nozzle (203), the shear mechanism (204) is located at the yarn groove (402), the shear mechanism (204) is connected to the shear cylinder (205) in a transmission, and the shear cylinder (205) is used to drive the shear mechanism (204) to perform fixed-length shearing on the splice yarn that enters the shearing range.

3. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 2, characterized in that, The untwisting seat (202) is provided with an air inlet (209), and the inner wall of the yarn suction nozzle (203) is provided with an oblique air hole (211) that communicates with the air inlet (209). The oblique air hole (211) is located on the side of the yarn suction nozzle (203) away from the air inlet (209). The air inlet (209) is used to access compressed gas. When the compressed gas flows out through the oblique air hole, it forms a negative pressure at the suction port of the yarn suction nozzle (203) to draw the yarn end into the yarn suction nozzle (203).

4. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 3, characterized in that, The untwisting seat (202) is provided with an exhaust hole (210) that communicates with the inner cavity of the yarn suction nozzle (203). The exhaust hole (210) is connected to the exhaust valve (207) through the exhaust pipe (206). The end face of the exhaust valve (207) is equipped with an openable sealing plate (208). When the yarn end is sucked into the yarn suction nozzle (203) and passes through the exhaust hole (210), the instantaneous impact of the compressed gas causes the shear end face of the yarn end to form a scattered structure, thus completing the untwisting of the yarn end. The short fibers generated by untwisting are discharged after being pushed open by the sealing plate (208) through the exhaust pipe (206) and the exhaust valve (207) by the airflow. After the compressed gas supply stops, the sealing plate (208) returns to its original position and adheres to the end face of the exhaust valve (207) to form a seal.

5. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 2, characterized in that, The spinning machine housing assembly (1) is equipped with a yarn guide tube, a yarn guide seat group and a twist-stopping head. After untwisting, the yarn end enters the rotor of the rotor brake assembly (5) in sequence through the yarn guide tube, the yarn guide seat group and the twist-stopping head, and merges with the fibers in the rotor and twists to complete the yarn splicing.

6. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 1, characterized in that, The spinning machine locking assembly (3) includes a locking fixing seat (301), a locking leaf spring (302), a leaf spring pressure plate (303), a locking pin (304), and a locking roller (305); the leaf spring pressure plate (303) and the locking leaf spring (302) are fixed to one end of the locking fixing seat (301) from top to bottom, the locking pin (304) is rotatably connected to the end of the locking leaf spring (302), and the locking roller (305) is sleeved on the locking pin (304). The locking roller (305) is made of a self-lubricating plastic material.

7. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 1, characterized in that, A fixing nut (103) is press-fitted onto the spinning machine housing assembly (1), and the upper cover (4) of the spinning machine is fixed onto the spinning machine housing assembly (1) by bolts and fixing nut (103).

8. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 1, characterized in that, The rotor brake assembly (5) includes a rotor seat (501), a rotor assembly (502), a brake lever (504), a return spring (505), a brake base (506), and a brake block (507); the rotor assembly (502) is installed inside the rotor seat (501), and the rotor shaft (503) of the rotor assembly (502) is partially exposed outside the rotor seat (501); the brake lever (504) is hinged to the bottom of the rotor seat (501), and the brake lever (505) is... 4) A first mounting groove is provided on the upper surface of one end, and a second mounting groove is provided at the corresponding position of the rotating cup seat (501). The two ends of the return spring (505) are respectively limited and installed in the first mounting groove and the second mounting groove. A limiting pad is provided below one end of the brake lever (504). The brake seat (506) is fixed to the other end of the brake lever (504). The brake block (507) is fixed on the brake seat (506) and corresponds to the position of the rotating cup shaft (503).

9. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 8, characterized in that, When one end of the brake lever (504) abuts against the limiting pad, the brake block (507) disengages from the rotating cup shaft (503), and the rotating cup assembly (502) operates normally; when one end of the brake lever (504) disengages from the limiting pad, the elastic force of the return spring (505) drives the brake lever (504) to rotate around the hinge point, causing the brake block (507) to abut against the rotating rotating cup shaft (503), and the rotating cup shaft (503) is braked by friction.

10. The spinning device structure suitable for an automatic joint type rotor spinning machine according to claim 1, characterized in that, The spinning machine housing assembly (1) is provided with a threaded mounting hole (101) for fixing the scissor untwisting assembly (2) and a locking nut (102) for fixing the spinning machine locking assembly (3).

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