Spinning machine doffing tube structure capable of reducing yarn friction

Abstract

The utility model discloses a spinning machine doffing tube structure capable of reducing yarn friction, which comprises a doffing tube body, a cover plate is arranged at an outlet of the doffing tube body, one side of the cover plate is rotatably connected with the outlet of the doffing tube body, and the other side of the cover plate is connected with the doffing tube body through a pin shaft in an inserted locking mode. A counter bore is formed in the middle of the cover plate, the wider end face of the counter bore faces the outlet of the doffing tube body, a T-shaped ring sleeve is inserted into the counter bore in a matched mode, the inner end of the T-shaped ring sleeve is flush with the inner end of the cover plate, and a ceramic wire ring is arranged at the outer end of the T-shaped ring sleeve. According to the spinning machine doffing tube structure, yarn friction is weakened by arranging the ceramic yarn guide ring at the outlet of the doffing tube body, and meanwhile, the T-shaped ring sleeve assembly containing the ceramic yarn guide ring is convenient to replace through the cover plate structure capable of rotating and being fixed.

Description

Technical Field

[0001] This utility model relates to the field of spinning machines, specifically to a yarn guide tube structure for spinning machines that reduces yarn friction. Background Technology

[0002] The yarn guide tube is a key component in rotor spinning machines, used to draw the yarn from the spinning components during doffing.

[0003] Chinese patent CN1776039A discloses a yarn guide tube for drawing yarn from a spinning member during doffing. The yarn guide tube has at least two sections, wherein the first section has a yarn guiding surface, the second section is designed as a support for the first section, and when the two sections are connected, at least one of the sections has direct, large-area, and thermally conductive contact with the other section when they are joined together.

[0004] The yarn outlet of this yarn guide tube has a fixed structure and no related structure to reduce friction on the yarn. Long-term use will inevitably cause some wear on the yarn and affect the quality of the yarn. Utility Model Content

[0005] The purpose of this invention is to provide a yarn guide tube structure for a spinning machine that reduces yarn friction. This yarn guide tube structure reduces yarn friction by setting a ceramic guide ring at the outlet of the yarn guide tube body. At the same time, the T-shaped ring assembly containing the ceramic guide ring is easy to replace through a rotatable and fixable cover plate structure. The ceramic guide ring is also easier to replace when it reaches the end of its service life.

[0006] To achieve the above objectives, this utility model provides a yarn guide tube structure for reducing yarn friction in a spinning machine. The yarn guide tube structure includes a yarn guide tube body, with a cover plate at the outlet of the yarn guide tube body. One side of the cover plate is rotatably connected to the outlet of the yarn guide tube body, and the other side is lockably connected to the yarn guide tube body via a pin insertion. A countersunk hole is provided in the middle of the cover plate, with the wider end of the countersunk hole facing the outlet of the yarn guide tube body. A T-shaped ring is fitted into the countersunk hole, with the inner end of the T-shaped ring flush with the inner end of the cover plate. A ceramic guide ring is provided at the outer end of the T-shaped ring.

[0007] Preferably, a fixing plate is fixedly connected to the upper side of the outlet of the yarn guide tube body, a slide rod is slidably inserted on the fixing plate, and a handle and a baffle are fixedly connected to both ends of the slide rod respectively; a spring is sleeved on the slide rod between the baffle and the fixing plate, the pin is fixedly connected to the outer end of the baffle, and a first extension is provided on the upper side of the cover plate, and a locking hole is provided on the first extension to allow the pin to be inserted.

[0008] Preferably, a fixing block is fixedly connected to the lower side of the outlet of the yarn guide tube body; a rotating shaft is rotatably arranged inside the fixing block, and a second extension is provided on the lower side of the cover plate, the second extension being fixedly connected to the rotating shaft.

[0009] Preferably, the yarn guide tube body includes a vertical part mounted on a bracket and a bent part connecting the vertical part. An inlet flared cup is installed at the upper end of the vertical part, and the cover plate is installed at the lower end outlet of the bent part. A thread-passing hole is provided between the vertical part and the bent part.

[0010] Preferably, an air inlet is provided on the outer side of the vertical part; an air cavity is provided at the bottom of the air inlet, and a plurality of air holes are provided at the bottom of the air cavity, with the two ends of the air holes respectively connected to the air cavity and the wire hole.

[0011] Preferably, the bottom of the vent is configured as an oblique hole extending downwards.

[0012] Preferably, the inlet flared cup is connected to the upper end of the vertical part by a thread.

[0013] Preferably, the bracket includes a vertical plate and a horizontal plate, the horizontal plate is provided with a mounting hole, the vertical part is inserted into the mounting hole, a connecting ring is fixedly sleeved on the vertical part, and the connecting ring is connected to the horizontal plate by a plurality of screws.

[0014] Preferably, the horizontal plate has a first side ear plate on both sides, and the first side ear plate has a first elongated hole. The vertical plate has a second side ear plate on both sides, and the second side ear plate has a second elongated hole.

[0015] According to the above technical solution, this utility model provides a yarn guide tube structure for reducing yarn friction in a spinning machine. The yarn guide tube structure includes a yarn guide tube body, and a cover plate is provided at the outlet of the yarn guide tube body. One side of the cover plate is rotatably connected to the outlet of the yarn guide tube body, and the other side is lockably connected to the yarn guide tube body by a pin insertion. A countersunk hole is provided in the middle of the cover plate, and the wider end of the countersunk hole faces the outlet of the yarn guide tube body. A T-shaped ring is fitted and inserted into the countersunk hole, and the inner end of the T-shaped ring is flush with the inner end of the cover plate. A ceramic guide ring is provided at the outer end of the T-shaped ring.

[0016] The yarn guide tube structure of this spinning machine has the following advantages: By setting a ceramic guide ring at the outlet of the yarn guide tube body, the yarn friction is reduced. At the same time, the T-shaped ring assembly containing the ceramic guide ring is easy to replace through the rotatable and fixed cover plate structure. When the ceramic guide ring reaches the end of its service life, it is easier to replace.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the yarn guide tube structure of a spinning machine;

[0020] Figure 2 This is a top view schematic diagram of a preferred embodiment of the yarn guide tube structure of a spinning machine;

[0021] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure;

[0022] Figure 4 yes Figure 3 A magnified schematic diagram of a portion of region B in the middle;

[0023] Figure 5 yes Figure 3 A magnified schematic diagram of the structure of region C in the middle.

[0024] Explanation of reference numerals in the attached figures

[0025] 1-Vertical plate; 2-Horizontal plate; 3-Second side ear plate; 4-First side ear plate; 5-Second elongated hole; 6-First elongated hole; 7-Vertical part; 8-Bent part; 9-Inlet flared cup; 10-Connecting ring; 11-Fixing plate; 12-Baffle; 13-Spring; 14-Handle; 15-Cover plate; 16-Ceramic wire ring; 17-Screw; 18-Slide rod; 19-Pin; 20-Wire hole; 21-First extension part; 22-Countersunk hole; 23-T-ring sleeve; 24-Second extension part; 25-Fixing block; 26-Rotating shaft; 27-Air inlet nozzle; 28-Air chamber; 29-Air hole; 30-Angled hole. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0027] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0028] See Figure 1-5 The illustrated yarn guide tube structure for reducing yarn friction includes a yarn guide tube body. A cover plate 15 is provided at the outlet of the yarn guide tube body. One side of the cover plate 15 is rotatably connected to the outlet of the yarn guide tube body, and the other side is able to be inserted and locked to the yarn guide tube body by a pin 19. A countersunk hole 22 is provided in the middle of the cover plate 15. The wider end of the countersunk hole 22 faces the outlet of the yarn guide tube body. A T-shaped ring 23 is fitted into the countersunk hole 22. The inner end of the T-shaped ring 23 is flush with the inner end of the cover plate 15. A ceramic guide ring 16 is provided at the outer end of the T-shaped ring 23.

[0029] The yarn guide tube structure of this spinning machine reduces yarn friction by setting a ceramic guide ring 16 at the outlet of the yarn guide tube body. At the same time, the T-shaped ring 23 assembly containing the ceramic guide ring 16 can be easily replaced by a cover plate 15 structure that can be rotated and fixed. When the ceramic guide ring 16 reaches the end of its service life, it is easier to replace. The specific method for replacing the T-shaped sleeve 23 assembly containing the ceramic guide ring 16 is as follows: First, pull the pin 19 out of the cover plate 15, then rotate the cover plate 15 to its lowest position. At this time, the T-shaped sleeve 23 is not restricted by the position of the yarn guide tube body's outlet. Take out the T-shaped sleeve 23 assembly containing the ceramic guide ring 16 and replace it with a new assembly. After replacement, rotate the cover plate 15 so that the T-shaped sleeve 23 and the outlet of the yarn guide tube body are coaxial. The position of the T-shaped sleeve 23 is not restricted by the outlet of the yarn guide tube body. Then, insert the pin 19 to lock the cover plate 15. The overall operation is convenient and easy for later maintenance.

[0030] In this embodiment, to further provide a locking structure for the cover plate 15, a fixing plate 11 is fixedly connected to the upper side of the outlet of the yarn guide tube body. A slide rod 18 is slidably inserted into the fixing plate 11, and a handle 14 and a baffle 12 are fixedly connected to both ends of the slide rod 18, respectively. A spring 13 is sleeved on the slide rod 18 between the baffle 12 and the fixing plate 11. A pin 19 is fixed to the outer end of the baffle 12. A first extension 21 is provided on the upper side of the cover plate 15, and a locking hole is provided on the first extension 21 to allow the pin 19 to be inserted. In use, pulling the handle 14 backward compresses the spring 13, and the pin 19 is pulled out from the locking hole, allowing the cover plate 15 to rotate. When locking is required, pulling the handle 14 rotates the locking hole to a position coaxial with the pin 19. Then, under the reset of the spring 13, the pin 19 is inserted into the locking hole, achieving locking and preventing the cover plate 15 from rotating.

[0031] In this embodiment, to further provide a relative rotation structure between the cover plate 15 and the outlet of the yarn guide tube body, a fixing block 25 is fixedly connected to the lower side of the outlet of the yarn guide tube body; a rotating shaft 26 is rotatably disposed within the fixing block 25, and a second extension 24 is provided on the lower side of the cover plate 15, the second extension 24 being fixedly connected to the rotating shaft 26. With this arrangement, the rotating shaft 26 rotates within the fixing block 25, thereby realizing the rotation of the cover plate 15. Of course, to prevent the rotating shaft 26 from slipping, a limiting end plate can be provided at the end of the rotating shaft 26.

[0032] In this embodiment, to further provide a yarn guide tube body structure, the yarn guide tube body includes a vertical part 7 mounted on a bracket and a bent part 8 connecting the vertical part 7. An inlet flared cup 9 is mounted at the upper end of the vertical part 7, and a cover plate 15 is mounted at the lower outlet of the bent part 8. A thread-passing hole 20 is provided between the vertical part 7 and the bent part 8. The inlet flared cup 9 makes it easier for the yarn to enter the thread-passing hole 20, while the bending direction of the bent part 8 is set as needed.

[0033] In this embodiment, an air inlet 27 is provided on the outer side of the vertical part 7; an air chamber 28 is provided at the bottom of the air inlet 27, and a plurality of air holes 29 are provided at the bottom of the air chamber 28, with the two ends of the air holes 29 respectively connected to the air chamber 28 and the thread passage hole 20. With this arrangement, the air inlet 27 is connected to an air pump, blowing air into the thread passage hole 20, creating a negative pressure environment at the upper end of the thread passage hole 20, making it easier for the yarn to enter and pass through the thread passage hole 20.

[0034] In this embodiment, the bottom of the air hole 29 is configured as an obliquely downward extending hole 30. After the gas enters the air chamber 28, it enters the air hole 29 and then the obliquely extending hole 30, causing it to blow obliquely downward toward the yarn passage hole 20. The airflow in the yarn passage hole 20 flows from top to bottom, driving the yarn downward to the outlet.

[0035] In this embodiment, the inlet flared cup 9 is connected to the upper end of the vertical part 7 by a thread. The outer side of the inlet flared cup 9 is provided with an external thread, the inner side of the upper end of the vertical part 7 is provided with an internal thread, and the upper end of the vertical part 7 is provided with a stop portion, which is aligned with the lower end of the inlet flared cup 9.

[0036] In this embodiment, in order to further provide an installation structure for the yarn guide tube body, the bracket includes a vertical plate 1 and a horizontal plate 2. The horizontal plate 2 is provided with an installation hole. The vertical part 7 is inserted into the installation hole. A connecting ring 10 is fixedly sleeved on the vertical part 7. The connecting ring 10 is connected to the horizontal plate 2 by a plurality of screws 17.

[0037] In this embodiment, the horizontal plate 2 has first side ear plates 4 on both sides, and the first side ear plates 4 have first elongated holes 6. The vertical plate 1 has second side ear plates 3 on both sides, and the second side ear plates 3 have second elongated holes 5. The first elongated holes 6 and the second elongated holes 5 facilitate the passage of installation bolts and fixation of the bracket at the corresponding work position.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0040] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A yarn guide tube structure for a spinning machine to reduce yarn friction, characterized in that, The yarn guide tube structure of the spinning machine includes a yarn guide tube body, and a cover plate (15) is provided at the outlet of the yarn guide tube body. One side of the cover plate (15) is rotatably connected to the outlet of the yarn guide tube body, and the other side is able to be inserted and locked to the yarn guide tube body by a pin (19). The cover plate (15) is provided with a countersunk hole (22) in the middle. The wider end of the countersunk hole (22) faces the outlet of the yarn guide tube body. A T-shaped ring (23) is inserted into the countersunk hole (22). The inner end of the T-shaped ring (23) is flush with the inner end of the cover plate (15). A ceramic guide ring (16) is provided at the outer end of the T-shaped ring (23).

2. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 1, characterized in that, A fixing plate (11) is fixedly connected to the upper side of the outlet of the yarn guide tube body. A sliding rod (18) is slidably inserted on the fixing plate (11). A handle (14) and a baffle (12) are fixedly connected to both ends of the sliding rod (18). A spring (13) is sleeved on the slide rod (18) between the baffle (12) and the fixed plate (11). The pin (19) is fixed to the outer end of the baffle (12). A first extension (21) is provided on the upper side of the cover plate (15). The first extension (21) is provided with a locking hole that can be inserted into the pin (19).

3. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 1, characterized in that, A fixing block (25) is fixedly connected to the lower side of the outlet of the yarn guide tube body; A rotating shaft (26) is rotatably provided inside the fixed block (25), and a second extension (24) is provided on the lower side of the cover plate (15), and the second extension (24) is fixed to the rotating shaft (26).

4. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 1, characterized in that, The yarn guide tube body includes a vertical part (7) mounted on a bracket and a bent part (8) connecting the vertical part (7). An inlet flared cup (9) is installed at the upper end of the vertical part (7), and a cover plate (15) is installed at the lower end outlet of the bent part (8). A thread hole (20) is provided between the vertical part (7) and the bent part (8).

5. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 4, characterized in that, An air inlet (27) is provided on the outer side of the vertical part (7); The bottom of the air inlet (27) is provided with an air chamber (28), and the bottom of the air chamber (28) is provided with a plurality of air holes (29). The two ends of the air holes (29) are respectively connected to the air chamber (28) and the wire hole (20).

6. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 5, characterized in that, The bottom of the vent (29) is configured as an oblique vent (30) extending obliquely downward.

7. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 4, characterized in that, The inlet flared cup (9) is connected to the upper end of the vertical part (7) by a thread.

8. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 4, characterized in that, The bracket includes a vertical plate (1) and a horizontal plate (2), the horizontal plate (2) is provided with mounting holes, and the vertical part (7) is inserted into the mounting holes; A connecting ring (10) is fixedly sleeved on the vertical part (7), and the connecting ring (10) is connected to the horizontal plate (2) by a plurality of screws (17).

9. The yarn guide tube structure for reducing yarn friction in a spinning machine according to claim 8, characterized in that, The horizontal plate (2) has a first side ear plate (4) on both sides, and a first elongated hole (6) is provided on the first side ear plate (4). The vertical plate (1) has a second side ear plate (3) on both sides, and a second elongated hole (5) is provided on the second side ear plate (3).

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