Full-automatic piecing device of spinning machine

Abstract

The invention relates to the technical field of spinning machines, in particular to a spinning machine full-automatic piecing device which comprises a spinning machine body, and a broken yarn sensor, a yarn guide roller and an electronic yarn clearer are sequentially arranged in the spinning machine body in the airflow movement direction. The clamping device is arranged at the top of the spinning machine body, and a driving mechanism for driving cone yarn to rotate is arranged in the spinning machine body. The airflow shell is fixed to the spinning machine body, the airflow shell comprises a first cavity and a second cavity which are different in air inlet pressure and air outlet pressure, and a yarn outlet hole is formed in the end, away from the clamping device, of the airflow shell in a penetrating mode; the negative-pressure pipeline is arranged in the spinning machine body, one end of the negative-pressure pipeline is communicated with the second cavity, the other end of the negative-pressure pipeline is connected with a negative-pressure device, and a cutting device is arranged between the second cavity and the negative-pressure pipeline; one end of the yarn tail transfer device is arranged in the yarn outlet hole, and the other end of the yarn tail transfer device extends out of the airflow shell; and the spinning apparatus corresponds to one end, far away from the clamping device, of the yarn tail transferring device and is used for receiving the yarn passing through the yarn tail transferring device and finishing jointing.

Description

Technical Field

[0001] This invention relates to the field of spinning machine technology, and in particular to a fully automatic splicing device for spinning machines. Background Technology

[0002] As one of the core pieces of equipment in the textile industry, the technological advancement of spinning machines directly affects the production efficiency and product quality of the textile industry. In the spinning process, yarn splicing is a critical step that not only affects the continuity of yarn and production efficiency, but also directly relates to the quality of the final product.

[0003] Currently, most widely used spinning machines employ manual splicing, semi-automatic splicing devices, and a small number of fully automatic splicing devices. With the development of rotor spinning and the gradual increase in rotor speed, traditional manual and ordinary semi-automatic splicing devices severely impact production quality and efficiency. Manual splicing is only suitable for lower rotor speeds and suffers from low reliability and poor efficiency. Due to variations in operator skill and experience, the success rate and quality of splicing are highly inconsistent. Semi-automatic splicing technology is suitable for higher rotor speeds, significantly improving production efficiency and splicing quality, but manual intervention is still required during the process. Other, less common fully automatic splicing devices are not widely adopted due to their complex mechanisms, high costs, low success rates at high speeds, complex overall machine mechanical structures, long splicing cycle times, and difficult maintenance.

[0004] Therefore, this application develops a fully automatic splicing device for spinning machines to solve the problems existing in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a fully automatic yarn splicing device for spinning machines to solve the problems of slow yarn splicing speed, low success rate and complex structure in the prior art.

[0006] The technical solution of this invention is: a fully automatic splicing device for a spinning machine, comprising: The spinning machine body is used to guide the yarn on the bobbin. Inside the spinning machine body, along the airflow direction, a yarn breakage sensor, a yarn guide roller, and an electronic yarn clearer are arranged in sequence. A clamping device is provided on the top of the spinning machine body for clamping the two ends of the yarn package. A drive mechanism for driving the yarn package to rotate is fixed inside the spinning machine body. An airflow housing is fixed on the main body of the spinning machine. The airflow housing includes a first chamber with different pressures at the air inlet and air outlet, and a second chamber communicating with the first chamber. A yarn outlet hole is provided at the end of the airflow housing away from the clamping device. A negative pressure pipeline is installed inside the main body of the spinning machine. One end is connected to the second chamber, and the other end is connected to the negative pressure device. A cutting device is provided between the second chamber and the negative pressure pipeline to cut off excess yarn. The yarn tail transfer device has one end set in the yarn outlet hole and the other end extended to the outside of the airflow housing, and is used to attract the cut yarn; A spinning device, corresponding to the end of the yarn tail transfer device away from the clamping device, is used to receive the yarn passing through the yarn tail transfer device and complete the splicing.

[0007] Preferably, the driving mechanism includes a support part and a rotating part. The support part passes through the rotating part axially and is fixed inside the spinning machine body. When the spinning machine is running, the outer side of the rotating part contacts the outer side of the yarn package, and the yarn package rotates through the frictional force of the mutual contact.

[0008] Preferably, the width of the first chamber gradually decreases along the airflow direction, so that the width of the air inlet of the first chamber is greater than the width of the air outlet.

[0009] Preferably, a yarn guide plate is provided at the connection position between the first chamber and the second chamber, and a yarn guide hole is provided through the yarn guide plate.

[0010] Preferably, the yarn guide plate includes a yarn guide hole and a pair of yarn guide surfaces. The yarn guide hole is located at the center of the yarn guide plate. The pair of yarn guide surfaces are symmetrical with respect to the yarn guide hole. One end of each pair of yarn guide surfaces is connected to the yarn guide hole and is inclined away from the direction of the yarn guide hole. The distance between the pair of yarn guide surfaces gradually increases.

[0011] Preferably, the inner wall of the yarn guide hole is spaced from the surface of the first chamber, so that the yarn does not come into contact with the surface of the first chamber when it passes through the first chamber and the yarn guide hole.

[0012] Preferably, the top end of the spinning machine body is bent toward the clamping device to form a lead wire portion, which is disposed between the driving mechanism and the yarn package and is smoothly connected to the surface of the first chamber.

[0013] Preferably, a lead hole is provided through the surface of the lead portion, a compensating bow is provided on the first chamber, a gap exists between the compensating bow and the lead portion, and the gap is connected to the lead hole.

[0014] Preferably, the lead hole divides the lead wire into two parts. When the yarn passes through the lead hole and falls on the compensating bow, the yarn between the contact point between the yarn and the compensating bow and the yarn package is in a suspended state.

[0015] Compared with the prior art, the advantages of the present invention are: (1) During the process of the drive mechanism driving the yarn to rotate, the yarn end is quickly found through the circulating airflow channel formed by the first chamber, the second chamber and the negative pressure pipe, and the yarn moves along the airflow direction to pass through the yarn breakage sensor, the yarn guide roller, the electronic yarn clearer, and then through the yarn tail transfer device and the spinning machine to achieve splicing. (2) The width of the air inlet of the first chamber is greater than the width of the air outlet, which makes the pressure at the air outlet greater, so that the yarn is in the process of acceleration, increasing the yarn splicing efficiency, and at the same time keeping the yarn in a straight state to prevent the yarn from spinning at the air outlet. (3) The gap between the compensating bow and the lead wire part is connected to the lead wire hole. The yarn falls into the gap through the lead wire hole, so that the yarn only has a point of contact with the compensating bow, reducing the frictional damage to the yarn. (4) During the process of the yarn from the bobbin to the spinning machine, there is no contact surface with the first chamber and the second chamber, which reduces the friction of the yarn, reduces resistance and improves the movement efficiency; (5) By coordinating the yarn guide hole and the yarn guide surface, the distribution and direction of airflow are controlled, the position of the yarn is stabilized, and the yarn is prevented from deviating from the path. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view of a fully automatic splicing device for a spinning machine according to the present invention; Figure 2 This is a partial structural schematic diagram of a fully automatic splicing device for a spinning machine according to the present invention; Figure 3 This is a side sectional view of a fully automatic splicing device for a spinning machine according to the present invention; Figure 4 This is a top view of a fully automatic splicing device for a spinning machine according to the present invention; Figure 5 This is a schematic diagram of the structure of a fully automatic splicing device for a spinning machine according to the present invention; Figure 6 for Figure 5 Enlarged structural diagram of B in the middle; Figure 7 for Figure 5 Enlarged structural diagram of C; Figure 8 This is a diagram showing the positional relationship between the cutting device, the negative pressure pipeline, and the yarn tail transfer device described in this invention.

[0017] The components include: 1. Spinning machine body; 11. Yarn breakage sensor; 12. Yarn guide roller; 13. Electronic yarn clearer; 2. Clamping device; 21. Drive mechanism; 211. Support part; 212. Rotating part; 3. Airflow housing; 31. First chamber; 32. Second chamber; 33. Yarn outlet hole; 34. Lead-in part; 341. Lead-in hole; 35. Compensating bow; 351. Gap; 4. Negative pressure pipeline; 5. Yarn tail transfer device; 6. Spinner; 7. Yarn; 8. Yarn guide plate; 81. Yarn guide hole; 82. Yarn guide surface; 9. Cutting device. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1-3 As shown, a fully automatic splicing device for a spinning machine includes a spinning machine body 1, a clamping device 2, an airflow housing 3, a negative pressure pipeline 4, a yarn tail transfer device 5, and a spinning unit 6. The clamping device 2 is located on the top of the spinning machine body 1 and can move freely to clamp both ends of the yarn package. A drive mechanism 21 is provided inside the spinning machine body 1, which contacts the outer surface of the yarn package. The rotation of the drive mechanism 21 causes the yarn package to rotate on the clamping device 2 through friction. When the spinning machine system is started, airflow is generated. The airflow moves along the path of the airflow housing 3 and the negative pressure pipeline 4, and the yarn package... The yarn 7 rotating on it is attracted to move along the airflow direction. Inside the spinning machine body 1, a yarn breakage sensor 11, a yarn guide roller 12, and an electronic yarn clearer 13 are arranged sequentially along the airflow direction. The yarn 7 passes through the yarn breakage sensor 11, the yarn guide roller 12, and the electronic yarn clearer 13 in sequence. When the yarn 7 enters the negative pressure pipe 4, the cutting device 9 set between the negative pressure pipe 4 and the airflow housing 3 cuts the yarn 7. Then, the yarn tail transfer device 5 attracts the cut yarn 7 and introduces the yarn 7 into the spinning machine 6 to connect with the cotton fibers in the spinning machine 6 to complete the splicing.

[0019] The drive mechanism 21 includes a support part 211 and a rotating part 212. The support part 211 passes through and is fixed inside the spinning machine body 1 along the axial direction of the rotating part 212. The outer side of the rotating part 212 is in contact with the outer side of the yarn package. When the spinning machine is running, the rotating part 212 rotates and drives the yarn package to reverse through friction. At the same time, the airflow housing 3 generates airflow that generates suction on the outer surface of the yarn package. When the yarn package rotates to the air inlet of the first chamber 31, the yarn 7 moves along the airflow direction to achieve the purpose of finding the yarn 7 head.

[0020] In this embodiment, as Figure 1As shown, the airflow housing 3 is fixed to the spinning machine body 1. The airflow housing 3 includes a first chamber 31 and a second chamber 32. The air outlet of the first chamber 31 is connected to the second chamber 32. The air inlet of the first chamber 31 is located between the yarn package and the drive mechanism 21. The width of the first chamber 31 gradually decreases along the airflow direction, making the width of the air outlet of the first chamber 31 smaller than the width of the air inlet. This gives the first chamber 31 a structure that is wider at the top and narrower at the bottom, thereby ensuring that the pressure at the air outlet is greater than the pressure at the air inlet. This helps to form a stable airflow channel in the first chamber 31, reducing turbulence and eddies in the airflow within the housing, and also accelerating the movement speed of the yarn 7 and improving splicing efficiency. During the spinning process, the design of being wider at the top and narrower at the bottom ensures that the airflow is evenly distributed inside the airflow housing 3, improving spinning efficiency and quality. The wider air inlet reduces the resistance when the airflow enters the housing, allowing the airflow to enter the spinning area more smoothly. The narrower air outlet helps to concentrate the airflow, enhance the stretching and twisting effect on the fibers, and help reduce the entanglement and knotting of fibers inside the airflow housing 3. The end of the airflow housing 3 away from the clamping device 2 is provided with a yarn outlet hole 33. One end of the yarn tail transfer device 5 is set inside the yarn outlet hole 33, and the other end extends to the outside of the airflow housing 3 and communicates with the yarn outlet of the spinneret 6. The yarn 7 passes through the first chamber 31 and the second chamber 32 and then passes through the yarn tail transfer device 5.

[0021] Specifically, such as Figure 8 As shown, the yarn tail transfer device 5 is connected to a vacuum generator. The vacuum generator generates positive pressure, which creates negative pressure at the port of the yarn tail transfer device 5 located at the yarn outlet 33. This negative pressure attracts the yarn 7 cut by the cutting device 9 and allows it to pass through the yarn tail transfer device 5 into the spinning machine 6.

[0022] Furthermore, such as Figures 5-7 As shown, a yarn guide plate 8 is provided at the connection position of the first chamber 31 and the second chamber 32. The yarn guide plate 8 includes a yarn guide hole 81 and a pair of yarn guide surfaces 82. The yarn guide hole 81 is located at the center of the yarn guide plate 8. The yarn guide hole 81 at the center provides accurate positioning for the yarn 7, which can ensure that the yarn 7 maintains an accurate position when passing through the airflow housing 3, and avoid the yarn 7 deviating from the predetermined path, thereby ensuring the accuracy and stability of the joint. The pair of yarn guide surfaces 82 are symmetrical relative to the yarn guide hole 81. One end of each pair of yarn guide surfaces 82 is connected to the yarn guide hole 81, and the distance between the two yarn guide surfaces 82 gradually increases in the direction away from the yarn guide hole 81, so that the yarn guide surfaces 82 are inclined. The pair of inclined and symmetrical yarn guide surfaces 82 can provide a precise guiding path for the yarn 7, ensuring that the yarn 7 maintains the predetermined direction and position when passing through the airflow housing 3, reducing the deviation and swing of the yarn 7, and also reducing the direct contact area between the yarn 7 and the inside of the airflow housing 3, thereby reducing the friction and wear of the yarn 7 during the passage process, which helps to protect the quality and performance of the yarn 7.

[0023] To reduce friction between the yarn 7 and the airflow housing 3 during movement, the inner wall of the yarn guide hole 81 is spaced from the surface of the first chamber 31. This ensures that the yarn 7 does not come into direct contact with the surface of the first chamber 31 when passing through the yarn guide hole 81, thus reducing friction between the yarn 7 and the hard surface. This reduces the risk of damage to the yarn 7 due to wear, ensuring the quality and performance of the yarn 7. It also reduces downtime caused by the yarn 7 being blocked or jammed, improving the overall production efficiency and stability of the spinning machine. Furthermore, reducing contact between the yarn 7 and the surface of the first chamber 31 also reduces the probability of malfunctions such as yarn entanglement, knotting, or breakage.

[0024] To improve the success rate of finding the yarn head 7 and ensure the quality of the yarn 7, the top of the spinning machine body 1 is bent towards the clamping device 2 to form a lead wire part 34. The lead wire part 34 is located between the drive mechanism 21 and the yarn package and is smoothly connected to the surface of the first chamber 31. The smooth connection of the lead wire part 34 reduces the friction points of the yarn 7 during the transmission process, thereby reducing the risk of damage to the yarn 7 due to friction. The bent lead wire part 34 provides a transmission path for the yarn 7, allowing the yarn 7 to smoothly enter the airflow housing 3.

[0025] Among them, such as Figures 4-7 As shown, a lead wire hole 341 is provided through the surface of the lead wire part 34, and a compensation bow 35 is provided on the first chamber 31. There is a gap 351 between the compensation bow 35 and the lead wire part 34. The gap 351 is connected to the lead wire hole 341. After the yarn 7 is drawn out from the yarn package, it enters the airflow housing 3 through the lead wire part 34. When the yarn 7 moves, it will move back and forth along the axial direction of the yarn package, so that the yarn 7 falls on the compensation bow through the gap 351, thereby reducing the contact area between the yarn 7 and the airflow housing 3 during the movement and reducing the friction with the airflow housing 3.

[0026] Furthermore, the lead hole 341 divides the lead section 34 into two parts. When the yarn 7 passes through the lead hole 341 and falls onto the compensating bow 35, the contact position between the yarn 7 and the compensating bow 35 and the yarn package is in a suspended state. The yarn 7 is transmitted in a suspended state, which reduces the direct contact area with the internal structure of the spinning machine, thereby reducing wear caused by friction, protecting the quality of the yarn 7, reducing the risk of breakage caused by friction, entanglement, etc., reducing the downtime due to yarn 7 breakage, and improving the production efficiency of the spinning machine.

[0027] The implementation principle of this embodiment: When splicing yarn 7, the spinning machine system starts, and the negative pressure device generates negative pressure, forming an airflow between the airflow housing 3 and the negative pressure pipeline 4, which generates suction on the yarn 7 on the bobbin. The bobbin rotates in the opposite direction under the drive mechanism 21. When the yarn 7 head rotates to the air inlet of the guide section 34, it is attracted and moves along the airflow direction, passing through the yarn breakage sensor 11, the guide roller 12, and the electronic yarn clearer 13 in sequence. After the yarn 7 is attracted into the negative pressure pipeline 4, the cutting device 9 cuts the yarn 7. At this time, the negative pressure device stops operating, and the vacuum generator connected to the yarn tail transfer device 5 starts, so that the port of the yarn tail transfer device 5 set at one end of the yarn outlet 33 forms negative pressure, attracting the cut yarn 7 into the yarn tail transfer device 5 and transferring it to the spinning machine 6 to splice the cotton fibers in the spinning machine 6. After the splicing is completed, the drive mechanism 21 drives the bobbin to rotate forward, winding the yarn 7 onto the bobbin.

[0028] The above embodiments are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. A fully automatic splicing device for a spinning machine, characterized in that, include: The spinning machine body (1) is used to guide the yarn (7) on the bobbin. The spinning machine body (1) is provided with a yarn breakage sensor (11), a yarn guide roller (12), and an electronic yarn clearer (13) in sequence along the airflow direction. A clamping device (2) is provided on the top of the spinning machine body (1) for clamping the two ends of the yarn package. A drive mechanism (21) for driving the yarn package to rotate is fixed inside the spinning machine body (1). An airflow housing (3) is fixed on the main body (1) of the spinning machine. The airflow housing (3) includes a first chamber (31) with different pressures at the air inlet and air outlet, and a second chamber (32) connected to the first chamber (31). A yarn outlet hole (33) is provided at one end of the airflow housing (3) away from the clamping device (2). A negative pressure pipeline (4) is installed inside the main body (1) of the spinning machine. One end is connected to the second chamber (32), and the other end is connected to the negative pressure device. It forms a circulating airflow with the airflow housing (3) so that the yarn (7) passes through the yarn breakage sensor (11), the yarn guide roller (12), and the electronic yarn clearer (13) in sequence. A cutting device (9) is provided between the second chamber (32) and the negative pressure pipeline (4) to cut off excess yarn (7). The yarn tail transfer device (5) has one end set inside the yarn outlet hole (33) and the other end extends to the outside of the airflow housing (3) and communicates with the yarn outlet of the spinning machine (6) to attract the cut yarn (7); The spinning device (6), corresponding to the end of the yarn tail transfer device (5) away from the clamping device (2), is used to receive the yarn (7) passing through the yarn tail transfer device (5) and complete the splicing.

2. The fully automatic splicing device for a spinning machine according to claim 1, characterized in that: The drive mechanism (21) includes a support part (211) and a rotating part (212). The support part (211) passes through the rotating part (212) axially and is fixed inside the spinning machine body (1). When the spinning machine is running, the outer side of the rotating part (212) contacts the outer side of the yarn package and the yarn package rotates through the frictional force of mutual contact.

3. The fully automatic splicing device for a spinning machine according to claim 1, characterized in that: The width of the first chamber (31) gradually decreases along the direction of airflow, so that the width of the air inlet of the first chamber (31) is greater than the width of the air outlet.

4. The fully automatic splicing device for a spinning machine according to claim 1, characterized in that: A yarn guide plate (8) is provided at the connection position between the first chamber (31) and the second chamber (32), and a yarn guide hole (81) is provided through the yarn guide plate (8).

5. The fully automatic splicing device for a spinning machine according to claim 4, characterized in that: The yarn guide plate (8) includes a yarn guide hole (81) and a pair of yarn guide surfaces (82). The yarn guide hole (81) is located at the center of the yarn guide plate (8). The pair of yarn guide surfaces (82) are symmetrical about the yarn guide hole (81). One end of each pair of yarn guide surfaces (82) is connected to the yarn guide hole (81) and is inclined away from the direction of the yarn guide hole (81). The distance between the pair of yarn guide surfaces (82) gradually increases.

6. The fully automatic splicing device for a spinning machine according to claim 4, characterized in that: The inner wall of the yarn guide hole (81) is spaced from the surface of the first chamber (31), so that when the yarn (7) passes through the first chamber (31) and through the yarn guide hole (81), it does not come into contact with the surface of the first chamber (31).

7. The fully automatic splicing device for a spinning machine according to claim 1, characterized in that: The top of the spinning machine body (1) is bent toward the clamping device (2) to form a lead wire part (34). The lead wire part (34) is disposed between the driving mechanism (21) and the yarn package and is smoothly connected to the surface of the first chamber (31).

8. The fully automatic splicing device for a spinning machine according to claim 7, characterized in that: The lead wire part (34) has a lead wire hole (341) through it. The first chamber (31) is provided with a compensating bow (35). There is a gap (351) between the compensating bow (35) and the lead wire part (34). The gap (351) is connected to the lead wire hole (341).

9. The fully automatic splicing device for a spinning machine according to claim 8, characterized in that: The lead hole (341) divides the lead part (34) into two parts. When the yarn (7) passes through the lead hole (341) and falls on the compensating bow (35), the yarn (7) between the contact position of the yarn (7) and the compensating bow (35) and the yarn package is in a suspended state.

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