Shearing and untwisting device of joint type rotor spinning machine

Abstract

The invention discloses a shearing and untwisting device of a joint type rotor spinning machine, which comprises an untwisting seat, the untwisting seat comprises an air inlet, an air outlet and a suction inlet, and the air inlet, the air outlet and the suction inlet are communicated; a shear assembly and a driving mechanism are mounted on the untwisting seat, the shear assembly comprises a right shear blade and a left shear blade, the right shear blade is fixedly mounted on the untwisting seat, the left shear blade is rotatably arranged on the untwisting seat, and the driving mechanism is in driving connection with the left shear blade and can drive the left shear blade to rotate relative to the right shear blade. The yarn cutting device can effectively cut off the yarn and untwist the reserved end.

Description

Technical Field

[0001] This invention relates to the field of rotor spinning machine technology, and more specifically, to a cutting and untwisting device for a 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, resulting in a relatively large amount of splicing work. Traditionally, splicing is done manually, and inconsistent splicing results can occur due to variations in the length of the yarn left by the operator and the level of the splice. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cutting and untwisting device for a joint-type rotor spinning machine.

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

[0005] This invention discloses a shearing and untwisting device for a joint-type rotor spinning machine, comprising an untwisting seat, an air inlet, an exhaust outlet, and an intake inlet, which are connected to each other; a shear assembly and a drive mechanism are mounted on the untwisting seat, the shear assembly comprising a right shear blade and a left shear blade, the right shear blade being fixedly mounted on the untwisting seat, and the left shear blade being rotatably mounted on the untwisting seat, the drive mechanism driving the left shear blade to rotate relative to the right shear blade.

[0006] Furthermore, the scissor assembly includes a positioning screw, a fixing hole 1 is provided on the untwisting seat, and an installation hole is provided on the right scissor blade. The positioning screw passes through the installation hole and is screwed into the fixing hole 1.

[0007] Furthermore, the scissor assembly also includes a scissor shaft and a fastening bolt. A through hole is provided on the left scissor blade, and part of the scissor shaft passes through the through hole. The left scissor blade is rotatably mounted on the scissor shaft. A second fixing hole is provided on the untwisting seat, and the fastening bolt passes through the scissor shaft and is screwed into the second fixing hole.

[0008] Furthermore, a positioning hole is provided on the right scissor blade, and part of the scissor shaft passes through the positioning hole.

[0009] Furthermore, the scissor assembly includes a spring pressure plate, which is rotatably mounted on the scissor shaft. The spring pressure plate is located on the side of the left scissor blade away from the right scissor blade, pressing the left scissor blade against the right scissor blade.

[0010] Furthermore, the left scissor blade includes a protrusion, and the spring pressure plate includes a slot, with the protrusion engaging within the slot.

[0011] Furthermore, the driving mechanism includes a scissor cylinder, a rotating seat is mounted on the piston rod of the scissor cylinder, a rotating shaft passes through the left scissor blade, and one end of the rotating shaft is installed inside the rotating seat.

[0012] Furthermore, the rotating shaft includes a connected screw and a connecting ball. A connecting hole is provided on the left scissor blade. The screw passes through the connecting hole and is threadedly connected to a fixing nut. A limit hole is provided inside the rotating seat, and the connecting ball is set in the limit hole.

[0013] Furthermore, an installation block is connected to the side of the untwisting seat, and a retaining shaft is connected to the installation block. A rotating seat two is installed on the scissor cylinder, and the retaining shaft is set through the rotating seat two. The rotating seat two is rotatably set on the retaining shaft.

[0014] Furthermore, it also includes a support base, on which self-tapping screws are installed, and a hole seat is provided on the untwisting seat.

[0015] The beneficial effects of this invention are: by using the cooperation of the left and right scissor blades to cut the yarn, the length of the yarn ends is consistent, and the yarn ends can be sucked in for untwisting, thereby improving the quality and consistency of the yarn splicing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a cutting and untwisting device for a joint-type rotor spinning machine in this embodiment.

[0017] Figure 2 This is a schematic diagram of another structure of the cutting and untwisting device of the joint-type rotor spinning machine in this embodiment;

[0018] Figure 3 This is an exploded schematic diagram of the shearing and untwisting device of the joint-type rotor spinning machine in this embodiment.

[0019] Figure 4 This is a schematic diagram of one structure of the right scissor blade in this embodiment;

[0020] Figure 5 This is a schematic diagram of one installation of the drive mechanism in this embodiment;

[0021] Figure 6 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 7 This is a schematic diagram of the internal structure of the suction nozzle hole in this embodiment.

[0023] Attached reference numerals: 1. Support base; 2. Untwisting seat; 3. Right scissor blade; 4. Left scissor blade; 5. Spring pressure plate; 6. Scissor shaft; 7. Fastening bolt; 8. Rotating shaft; 9. Scissor cylinder; 10. Yarn suction nozzle; 11. Suction nozzle insert; 12. Positioning screw; 13. Self-tapping screw; 14. Fixing bolt; 15. Air inlet; 16. Exhaust outlet; 17. Suction inlet; 18. Suction nozzle hole; 19. Rotating base two; 20. Hole seat; 21. Fixing hole one; 2. Fixing hole 2; 23. Mounting hole; 24. Positioning hole; 25. Through hole; 26. Connecting hole; 27. Protrusion; 28. Slot; 29. ​​Fixing nut; 30. Screw; 31. Connecting ball; 32. Rotating seat 1; 33. Limiting hole; 34. Mounting block; 35. Snap pin; 36. Snap cone; 37. Bending groove; 38. Airflow cavity; 39. Angled hole; 40. Mounting hole; 41. Receiving hole; 42. Support hole; 43. Pipe component; 44. Head component. 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 1-7As shown, a shearing and untwisting device for a joint-type rotor spinning machine includes an untwisting seat 2. The untwisting seat 2 includes an air inlet 15, an exhaust outlet 16, and a suction inlet 17, which are connected. The suction inlet 17 includes a suction nozzle hole 18 formed on the untwisting seat 2. A yarn suction nozzle 10 and a suction nozzle insert 11 are inserted into the suction nozzle hole 18, and the suction nozzle insert 11 is pressed onto the yarn suction nozzle 10. The suction nozzle insert 11 can be made of metal, has high strength, and is not easily scratched by the yarn. The mating point between the yarn suction nozzle 10 and the suction nozzle hole 18 has a flat rectangular structure to ensure the correct installation direction. A scissor assembly and a drive mechanism are installed on the untwisting seat 2. The scissor assembly includes a right scissor blade 3 and a left scissor blade 4. The left scissor blade 4 is located on the side of the right scissor blade 3 away from the untwisting seat 2. The right scissor blade 3 is fixedly installed on the untwisting seat 2, and the left scissor blade 4 is rotatably mounted on the untwisting seat 2. The drive mechanism drives the left scissor blade 4 to rotate relative to the right scissor blade 3, forming a cutting action to cut the yarn. The position of the scissor assembly is relatively fixed, so that the length of the cut yarn ends is consistent. An airflow cavity 38 is formed between the suction nozzle hole 18 and the yarn suction nozzle 10. The air inlet 15 is connected to the airflow cavity 38. The yarn suction nozzle 10 includes an oblique hole 39, which connects the airflow cavity 38 and the interior of the yarn suction nozzle 10. The oblique hole 39 is located on the side of the yarn suction nozzle 10 away from the air inlet 15 and is inclined downwards. The exhaust port 16 is connected to the interior of the yarn suction nozzle 10. In use, compressed air enters the airflow chamber 38 through the air inlet 15, then enters the yarn suction nozzle 10 through the oblique hole 39, and is discharged from the exhaust port 16. As the airflow enters the yarn suction nozzle 10 through the oblique hole 39, it creates downward pressure, thereby creating a momentary negative pressure at the upper end of the yarn suction nozzle 10, which in turn creates suction on the yarn above, completing the yarn suction action.

[0026] The yarn suction nozzle 10 includes a connected head component 44 and a tube component 43, with the diameter of the head component 44 being larger than the diameter of the tube component 43. The suction nozzle orifice 18 includes a connected mounting hole 40, a receiving hole 41, and a support hole 42, with the diameter of the support hole 42 being larger than the diameter of the receiving hole 41, and the diameter of the receiving hole 41 being larger than the diameter of the mounting hole 40. The tube component 43 of the yarn suction nozzle 10 is inserted into the mounting hole 40, and the outer wall of the tube component 43 is in contact with the inner wall of the mounting hole 40. The bottom of the head component 44 abuts against the step between the support hole 42 and the receiving hole 41, and the outer wall of the head component 44 is in contact with the inner wall of the support hole 42. Because the diameter of the tube component 43 is smaller than that of the receiving hole 41, a certain distance is left between the inner wall of the receiving hole 41 and the outer wall of the tube component 43, thereby forming an airflow cavity 38 at this location.

[0027] At the same time, when the airflow passes through the yarn end, it acts on the end and causes it to untwist. The untwisted yarn end is more likely to adhere to the fibers in the rotor, which greatly improves the success rate, quality and consistency of yarn splicing.

[0028] Furthermore, the scissor assembly includes a positioning screw 12, a fixing hole 21 on the untwisting seat 2, and an installation hole 23 on the right scissor blade 3. During installation, the positioning screw 12 passes through the installation hole 23 and is screwed into the fixing hole 21 to initially fix the untwisting seat 2. The scissor assembly also includes a scissor shaft 6 and a fastening bolt 7. The left scissor blade 4 has a through hole 25, through which part of the scissor shaft 6 is set, and the left scissor blade 4 is rotatably mounted on the scissor shaft 6. The right scissor blade 3 has a positioning hole 24, through which part of the scissor shaft 6 is set. The installation position of the right scissor blade 3 is positioned by the cooperation of the scissor shaft 6 and the positioning hole 24, so that the right scissor blade 3 is in the correct position to cooperate with the left scissor blade 4. Then, the positioning screw 12 is tightened to complete the complete fixation of the right scissor blade 3. The untwisting seat 2 has a fixing hole 22, through which the fastening bolt 7 passes through the scissor shaft 6 and is screwed into the fixing hole 22, thereby fixing the scissor shaft 6 to the untwisting seat 2.

[0029] The fastening bolt 7 fixes the scissor shaft 6 to the untwisting seat 2. The left scissor blade 4 can rotate around the scissor shaft 6 under the action of the drive mechanism, and cooperate with the fixed right scissor blade 3 to form a cutting action to cut the yarn.

[0030] The scissor assembly also includes a spring pressure plate 5, which is located on the side of the left scissor blade 4 away from the right scissor blade 3. The spring pressure plate 5 is rotatably mounted on the scissor shaft 6, and a portion of the scissor shaft 6 passes through the spring pressure plate 5. During the tightening of the fastening bolt 7, the portion of the scissor shaft 6 abuts against the side of the spring pressure plate 5 away from the left scissor blade 4, and the spring pressure plate 5 presses the left scissor blade 4 against the right scissor blade 3, so that the shearing surfaces of the left scissor blade 4 and the right scissor blade 3 are always in contact, giving the scissor assembly a stable shearing force.

[0031] The left scissor blade 4 includes a protrusion 27, and the spring pressure plate 5 includes a groove 28. Because both ends of the spring pressure plate 5 are bent towards the left scissor blade 4 relative to the middle portion, the bent groove 28 faces the left scissor blade 4, allowing the protrusion 27 to engage within the groove 28. Through the cooperation of the protrusion 27 and the groove 28, the left scissor blade 4 rotates, causing the spring pressure plate 5 to rotate synchronously. This ensures that the spring pressure plate 5 remains in a state of pressure against the left scissor blade 4, guaranteeing a stable shearing force for the scissor assembly.

[0032] The upper end of the spring pressure plate 5 is bent, which can act on the cutting point of the left scissor blade 4 in a targeted manner, so that the pressure on the cutting point of the left scissor blade 4 is greater, ensuring that the cutting surfaces of the left scissor blade 4 and the right scissor blade 3 can fit better.

[0033] The driving mechanism includes a scissor cylinder 9, on which a rotating seat 32 is mounted. A rotating shaft 8 passes through the left scissor blade 4, and one end of the rotating shaft 8 is installed inside the rotating seat 32. The scissor cylinder 9 controls the extension and retraction of its piston rod, which drives the rotating shaft 8 through the limiting hole 33, and then drives the left scissor blade 4 to rotate around the scissor shaft 6, thereby completing the cutting.

[0034] The rotating shaft 8 includes a connected screw 30 and a connecting ball 31. A connecting hole 26 is provided on the left shear blade 4. The screw 30 passes through the connecting hole 26 and is threadedly connected to a fixing nut 29. A retaining ring can be installed on the screw 30 near the rotating seat 32. During the tightening of the fixing nut 29, the retaining ring abuts against the side of the left shear blade 4, thereby fixing the screw 30 to the left shear blade 4 through the cooperation of the fixing nut 29 and the retaining ring. A limiting hole 33 is provided in the rotating seat 32. The connecting ball 31 is disposed within the limiting hole 33. A limiting ring groove is provided on the inner circumference of the limiting hole 33, and part of the connecting ball 31 is located within the limiting ring groove. The connecting ball 31 and the limiting hole 33 can rotate relative to each other. The limiting ring groove can restrict the axial and radial movement of the connecting ball 31.

[0035] A mounting block 34 is connected to the side of the untwisting seat 2, and a retaining shaft 35 is connected to the mounting block 34. A rotating seat 19 is mounted on the scissor cylinder 9. The retaining shaft 35 passes through the hole in the rotating seat 19, and the rotating seat 19 is rotatably mounted on the retaining shaft 35. The rotating seat 19 can rotate around the retaining shaft 35, so that the end of the scissor cylinder 9 is hinged to the untwisting seat 2.

[0036] A retaining cone 36 is connected to the end of the retaining shaft 35 furthest from the mounting block 34. The diameter of the retaining cone 36 gradually increases from the end furthest from the retaining shaft 35 to the end closest to the retaining shaft 35. The diameter of the end of the retaining cone 36 furthest from the retaining shaft 35 is smaller than the diameter of the retaining shaft 35, while the diameter of the end of the retaining cone 36 closest to the retaining shaft 35 is larger. The smaller diameter at one end of the retaining cone 36 facilitates its guidance and insertion into the hole of the rotating seat 2 19. The larger diameter at the other end of the retaining cone 36, after passing through the hole of the rotating seat 2 19, can abut against the rotating seat 2 19 for limiting and keeping the retaining shaft 35 within the hole of the rotating seat 2 19.

[0037] A bending groove 37 is provided on the retaining shaft 35. The retaining cone 36 penetrates the retaining shaft 35 radially, and the bending groove 37 penetrates the retaining cone 36 axially. The bending groove 37 divides the retaining cone 36 and part of the retaining shaft 35 into two parts, allowing them to deform towards the middle and be more easily inserted into the hole of the rotating seat 19.

[0038] This device also includes a support base 1, on which self-tapping screws 13 are installed, and a hole seat 20 is provided on the untwisting seat 2. The support base 1 is fixed to the untwisting seat 2 by screwing the self-tapping screws 13 into the hole seat 20. The support base 1 is also provided with fixing bolts 14, which are used to install the support base 1 onto the spinning machine housing, thus completing the installation of the untwisting seat 2.

[0039] 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 cutting and untwisting device for a joint-type rotor spinning machine, characterized in that, The untwisting seat (2) includes an air inlet (15), an exhaust port (16), and an intake port (17), which are connected together. A scissor assembly and a drive mechanism are installed on the untwisting seat (2). The scissor assembly includes a right scissor blade (3) and a left scissor blade (4). The right scissor blade (3) is fixedly installed on the untwisting seat (2), and the left scissor blade (4) is rotatably disposed on the untwisting seat (2). The drive mechanism drives the left scissor blade (4) to rotate relative to the right scissor blade (3).

2. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 1, characterized in that, The scissor assembly includes a positioning screw (12), a fixing hole (21) is provided on the untwisting seat (2), and an installation hole (23) is provided on the right scissor blade (3). The positioning screw (12) passes through the installation hole (23) and is screwed into the fixing hole (21).

3. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 1 or 2, characterized in that, The scissor assembly also includes a scissor shaft (6) and a fastening bolt (7). The left scissor blade (4) has a through hole (25). A portion of the scissor shaft (6) passes through the through hole (25). The left scissor blade (4) is rotatably mounted on the scissor shaft (6). The untwisting seat (2) has a fixing hole (22). The fastening bolt (7) passes through the scissor shaft (6) and is screwed into the fixing hole (22).

4. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 3, characterized in that, The right scissor blade (3) has a positioning hole (24), and part of the scissor shaft (6) passes through the positioning hole (24).

5. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 3, characterized in that, The scissor assembly includes a spring pressure plate (5), which is rotatably mounted on the scissor shaft (6). The spring pressure plate (5) is located on the side of the left scissor blade (4) away from the right scissor blade (3), pressing the left scissor blade (4) against the right scissor blade (3).

6. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 5, characterized in that, The left scissor blade (4) includes a protrusion (27), and the spring pressure plate (5) includes a slot (28), wherein the protrusion (27) is engaged in the slot (28).

7. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 1, characterized in that, The driving mechanism includes a scissor cylinder (9), a rotating seat (32) is mounted on the piston rod of the scissor cylinder (9), and a rotating shaft (8) is threaded through the left scissor blade (4), with one end of the rotating shaft (8) installed inside the rotating seat (32).

8. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 7, characterized in that, The rotating shaft (8) includes a screw (30) and a connecting ball (31) connected together. The left scissor blade (4) has a connecting hole (26). The screw (30) passes through the connecting hole (26) and is threadedly connected to a fixing nut (29). The rotating seat (32) has a limiting hole (33) and the connecting ball (31) is located in the limiting hole (33).

9. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 7 or 8, characterized in that, The untwisting seat (2) is connected to a mounting block (34) on its side. A retaining shaft (35) is connected to the mounting block (34). A rotating seat (19) is installed on the scissor cylinder (9). The retaining shaft (35) passes through the rotating seat (19) and is rotatably mounted on the retaining shaft (35).

10. The cutting and untwisting device for a joint-type rotor spinning machine according to claim 1, characterized in that, It also includes a support base (1), on which a self-tapping screw (13) is installed, and a hole seat (20) is provided on the untwisting seat (2).

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