Special-shaped pipe for compact spinning device and tension supporting mechanism of special-shaped pipe

Abstract

The utility model relates to a special-shaped pipe for a compact spinning device and a tension supporting mechanism of the special-shaped pipe, which comprise an integrated negative pressure compact pipe with a smooth surface and a negative pressure cavity, and a rib plate which is arranged at the lower part of the negative pressure compact pipe and extends towards one side of a compact lower roller, the negative pressure gathering pipe is provided with at least one air suction connector communicated with the negative pressure cavity and a plurality of airflow guide grooves formed in the wall of the arc-shaped guide pipe. A tension supporting seat is arranged on the lower portion of the rib plate, a rod hole used for installing a tension rod is formed in the tension supporting seat, and installation grooves which correspond to the airflow guide grooves and are used for installing tension supporting arms and gear receding notches used for receding the carrier gear are formed in the tension supporting seat at intervals. According to the utility model, the strength and the processing and assembling precision of the special-shaped pipe can be improved, the synchronism of the lattice apron is good, and the spinning consistency is improved.

Description

Technical Field

[0001] The utility model relates to a special-shaped tube for a compact spinning device and a tension support mechanism thereof, belonging to the technical field of compact spinning machine compacting devices. Background Art

[0002] In order to eliminate the spinning triangle area, the compact spinning machine adds a negative pressure gathering spinning device for yarn aggregation downstream of the main drafting. The special-shaped tube assembly of the gathering spinning device is mainly composed of a special-shaped tube, a grid ring, a gathering roller and a tension mechanism for tensioning the grid ring. There are multiple air flow guide grooves on the guide tube wall of the special-shaped tube, and the surface of the grid ring is densely covered with air holes. Multiple grid rings are correspondingly mounted on the air flow guide grooves of the negative pressure gathering tube, so that each air flow guide groove corresponds to a yarn. Under the action of the negative pressure airflow in the special-shaped tube, the yarn hairiness is gathered on the air flow guide groove while being transported by the rotation of the grid ring and then twisted, so as to achieve the requirements of reducing yarn hairiness and increasing yarn strength.

[0003] The special-shaped tube is usually a profiled tube and has a cavity for introducing negative pressure airflow. Tension mounting seats of the tension support mechanism are provided at both ends of the profiled tube. The tension support frame of the tension support mechanism is installed on the tension mounting seat through a positioning spring sheet. However, since the grid ring runs along the guide tube wall of the special-shaped tube, for the special-shaped tube and tension rod with multiple spindle structures such as six spindles and eight spindles, the special-shaped tube and tension rod are longer. The two ends of the special-shaped tube are installed on the roller seat, and the tension rod is mostly installed at the end on the supporting special-shaped tube. Therefore, after the special-shaped tube and the tension rod are deformed, the position of the grid ring supported by the tension changes, causing tension fluctuations, resulting in a decrease in the synchronization of each grid ring.

[0004] The positioning spring piece of the tension support mechanism installs the tension support frame on the tension support seat on the lower side of the negative pressure gathering tube. The support point of the tension support frame for the mesh ring is located at the bottom, far away from the yarn entering the air flow guide groove. This can reduce the contact area between the mesh ring and the gathering lower roller, reduce the friction on the mesh ring, and thus increase the service life of the mesh ring. However, due to the low friction between the mesh ring and the gathering lower roller, the synchronization of each mesh ring is reduced. Secondly, the tension support mechanism has many parts, especially the two ends of the tension support frame are connected to the special-shaped tube through multiple bent positioning spring pieces, and the cotton suction port of the cotton suction flute is located at the bottom. The space between the tension support mechanism, the gathering lower roller and the special-shaped tube inside the mesh ring is small, and the mesh ring is very easy to accumulate flowers inside, causing the mesh ring to deviate and difficult to control the tension. In particular, the mesh rings at the two ends are close to the connection part of the tension support mechanism. The flowers on the mesh rings at the two ends are more serious than those on other mesh rings, and the mesh ring consistency is poor, which makes the fluctuation of yarn hairiness and its strength between spindles more serious. Furthermore, the front end wall of the special-shaped tube is coaxially arranged with the gathering bottom roller, and the distance between the front end wall of the special-shaped tube and the gathering bottom roller is very small, which easily causes the gathering bottom roller to jump after flower accumulation, so it has not been well solved. Summary of the Invention

[0005] The utility model aims to provide a special-shaped tube for a concentrated spinning device and a tension support mechanism thereof, which can improve the strength of the special-shaped tube and the processing and assembly accuracy, have good grid ring synchronization, and improve spinning consistency.

[0006] The technical solution of the utility model for achieving the above-mentioned purpose is: a special-shaped tube for a gathering spinning device, characterized in that: it includes an integrated and smooth negative pressure gathering tube with a negative pressure cavity and a rib plate extending from the lower part of the negative pressure gathering tube to the side of the gathering lower roller, the negative pressure gathering tube is provided with at least one suction joint communicating with the negative pressure cavity and a plurality of air flow guide grooves on the arc-shaped guide tube wall, the lower part of the rib plate has a tension support seat, the tension support seat is provided with a rod hole for installing a tension rod, the tension support seat is provided with installation grooves corresponding to the air flow guide grooves and for installing the tension support arm, and a gear clearance slot for avoiding the bridge gear.

[0007] The cam is secured to the rear of the gear train with a spring that allows the gear train to move freely in the gear train, and the cam is secured to the rear of the gear train with a spring that allows the gear train to move freely in the gear train.

[0008] The special-shaped tube of the utility model has a smooth rib plate extending from the lower part of the negative pressure gathering tube to the side of the gathering lower roller. The integrated rib plate structure greatly improves the strength of the special-shaped tube, solving the problem that the special-shaped tubes of six-spindle and eight-spindle types are long and the straightness of the special-shaped tubes decreases after wear and deformation during use. The special-shaped tube of the utility model has a tension support seat at the lower part of the rib plate. The tension support seat is provided with a rod hole for installing a tension rod. The tension support seat is provided with multiple mounting grooves for placing tension support arms. Therefore, the tension rod installs the tension support arm on the tension support seat. The tension rods on both sides of each tension support arm can support and connect to the tension support seat, ensuring that the tension rod will not deform after operation. At the same time, the processing and installation accuracy of the special-shaped tube is improved, and the consistency of the mesh ring after assembly is improved. The installation position is more accurate, which can ensure the consistency and accuracy of the fiber strands after drafting and gathering in their floating area, thereby achieving better spinning data and reducing yarn hairiness and strength fluctuations.

[0009] The utility model simplifies the components of the tension supporting mechanism. The tension rod is inserted into the rod hole of the tension supporting seat and the tension rod seats of each corresponding tension supporting arm, the tension spring and the tension rod mounting hole of the end cover. The tension rod seat of the tension supporting arm is arranged on the tension supporting seat, and the tension spring is located on the upper side of the lower tension supporting arm, so the flower gathering phenomenon can be reduced. Although the mesh rings at both ends are close to the end cover, the tension rod is installed in the tension rod mounting hole of the end cover, and the consistency of the mesh ring is good, which solves the problem of serious flower accumulation in the mesh rings at both ends and poor spinning consistency.

[0010] The center of the front arc surface of the special-shaped tube of the utility model is located on one side of the gathering lower roller, and is eccentrically arranged with the center of the gathering lower roller, which can increase the space between the gathering lower roller and the front end surface of the special-shaped tube, and only the tension support arm is used to support the grid ring. The arc center of the arc seat of the tension support arm is located behind the center of the gathering lower roller, so that the tension support point of the grid ring is behind the gathering lower roller and the special-shaped tube, and is relatively far away from the suction port of the cotton suction flute tube, thereby reducing the accumulation of flying cotton inside the grid ring and increasing the space between the tension support point of the grid ring and the special-shaped tube. Therefore, the capacity of the grid ring to hold cotton inside is increased, and the problem of grid ring displacement and tension change caused by a small amount of accumulated cotton is reduced, which can extend the cotton cleaning and maintenance time, greatly reduce the maintenance workload, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0012] Figure 1 It is a schematic diagram of the structure of the special-shaped tube of the utility model.

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the special-shaped tube of the present utility model.

[0014] Figure 3 It is a structural schematic diagram of the utility model in which the tension support mechanism is installed on a special-shaped pipe.

[0015] Figure 4 The utility model is a schematic diagram of the exploded structure of the tension support mechanism installed on the special-shaped pipe.

[0016] Figure 5 yes Figure 3 AA cross-sectional structure diagram.

[0017] Among them: 1—special-shaped tube, 1-1—negative pressure gathering tube, 1-11—suction hole, 1-12—air flow guide groove, 1-13—arc-shaped guide tube wall, 1-14—front tube wall, 1-15—rear tube wall, 1-2—rib plate, 1-21—gear yielding slot, 1-22—tension support seat, 1-23—mounting slot, 1-24—rod hole, 2—end cover, 2-1—bearing seat, 2-2—negative pressure gathering tube seat, 2-3—tension rod mounting hole, 3—grid ring, 4—suction joint, 5—gathering bottom roller, 6—elastic end plug, 7—bearing, 8—sealing gasket, 9—tension support arm, 9-1—tension rod seat, 9-11—spring slot, 9-2—side baffle, 9-3—arc-shaped seat, 9-4—rod slot, 10—tension spring, 11—tension rod, 12—front roller. DETAILED DESCRIPTION

[0018] See Figure 1 、 2 As shown, the utility model is a special-shaped tube 1 for a gathering spinning device, comprising an integral and smooth negative pressure gathering tube 1-1 with a negative pressure cavity and a rib plate 1-2 extending from the lower portion of the negative pressure gathering tube 1-1 toward the side of the gathering lower roller 5. Since the negative pressure gathering tube 1-1 has an integral rib plate 1-2, the strength of the special-shaped tube 1 can be greatly improved. For a multi-spindle special-shaped tube 1 with six or eight spindles, the negative pressure gathering tube 1-1 can maintain good straightness during spinning to maintain the synchronization of the grid ring 3. Figure 3 As shown, the open ends of both ends of the negative pressure collecting tube 1-1 are sealed with elastic end plugs 6. The shape of the elastic end plug 6 is the same as the inner shape of the negative pressure collecting tube 1-1. A handle is provided at the outer end of the elastic end plug 6 to facilitate pressing the elastic end plug 6 into the negative pressure collecting tube 1-1. The end cover 2 can also be used to directly seal the opening of the negative pressure collecting tube 1-1 to prevent the negative pressure airflow from overflowing.

[0019] See Figures 1 to 3 As shown, the negative pressure gathering tube 1-1 of the present invention is provided with at least one suction joint 4 communicating with the negative pressure chamber and a plurality of air flow guide grooves 1-12 on the arc-shaped guide tube wall 1-13. The special-shaped tube 1 transitions to the front tube wall 1-14 and the rear tube wall 1-15 through an arc at the front and rear ends of the arc-shaped guide tube wall 1-13. The outer radius R1 of the arc is between 0.5 and 2.5 mm, and the inner radius R2 of the arc is between 0.5 and 2 mm. For example, if the outer radius R1 of the arc is between 1 and 2 mm, and the inner radius R2 of the arc is between 0.8 and 1.5 mm, the problem of shortening the path of the gathered yarn caused by the fluctuation of the negative pressure airflow at the sharp corner of the special-shaped tube is solved by increasing the arc radius. Figures 1 to 3As shown, the suction joint 4 of the utility model is sealed and fixed at the suction hole 1-11 of the negative pressure gathering pipe 1-1, and is connected to the negative pressure air source through the suction joint 4, so that the negative pressure airflow is sucked into the negative pressure gathering pipe 1-1, so that the fiber bundle output from the front port of the front roller 12 enters the arc-shaped guide pipe wall 1-13 smoothly, and is gathered by the negative pressure airflow of the airflow guide groove 1-12 at the arc-shaped guide pipe wall 1-13, and then enters the toothed working surface of the gathering lower roller 5 for twisting. The utility model is provided with one or more suction holes 1-11, which can be set according to the number of air flow guide grooves 1-12 to keep the negative pressure airflow in the negative pressure collecting tube 1-1 consistent. The suction joint 4 of the utility model can be set at the arc-shaped guide tube wall 1-13 of the negative pressure collecting tube 1-1. The negative pressure airflow through the air flow guide grooves 1-12 on the arc-shaped guide tube wall 1-13 acts on each stretched-out yarn to make it gather, and then twists it so that its hairiness can be sealed and wrapped around the yarn.

[0020] See Figures 1 to 5 As shown, the lower portion of the rib plate 1-2 of the present invention comprises a tension support seat 1-22. This seat is provided with a rod hole 1-24 for mounting the tension rod 11. Furthermore, this seat is also provided with mounting slots 1-23 corresponding to the airflow guide grooves 1-12 and for mounting the tension support arm 9, as well as a gear clearance notch 1-21 for circumventing the bridge gear. Therefore, during the machining of the special-shaped tube 1, the machining accuracy of the rod hole 1-24 and the mounting slot 1-23 can be ensured, thereby improving the assembly accuracy of the special-shaped tube 1 and the tension support mechanism. The special-shaped tube 1 of the present invention has an integrated tension support seat 1-22. While improving the strength of the special-shaped tube 1, the tension rod 11 equipped with the tension support arm 9 can be supported on the corresponding tension support seats 1-22. The tension rod 11 will not be deformed, so that the position of the air flow guide groove 1-12 corresponding to the grid circle 3 on each spindle will not change, which can ensure the consistency and accuracy of the fiber strands after stretching and aggregation in their floating area, and the spinning consistency is good.

[0021] See Figure 5 As shown, the center O2 of the front arc surface of the special-shaped tube 1 of the present invention is eccentrically arranged with the center O1 of the collecting lower roller, thereby increasing the space between the collecting lower roller 5 and the front end surface of the special-shaped tube 1, thereby accommodating more accumulated flowers and reducing the impact of a small amount of flower clipping on the mesh ring 3 and the collection lower roller 5. Figure 5As shown, the center O2 of the front arc surface of the special-shaped tube 1 of the present invention is located at the rear lower part of the center O1 of the gathering lower roller, and the front arc surface includes the front side tube wall 1-14 and the rib plate 1-2 of the negative pressure gathering tube 1-1 with the same center and equal diameter. The eccentric distance e1 between the center O2 of the front arc surface and the center O1 of the gathering lower roller is between 1.5-3mm, and e2 is between 0.5-1.5mm. If the eccentric distance e1 between the center O2 of the front arc surface and the center O1 of the gathering lower roller is between 1.8-2.5mm, and e2 is between 0.8-1.2mm, the radius R3 of the front arc surface is between 10.5 and 15mm. If R3 is between 10.5 and 15mm, without changing the installation position of the existing gathering lower roller 5, the distance between the gathering lower roller 5 and the front arc surface of the special-shaped tube 1 is increased, which can accommodate more accumulated flowers without affecting the consistency of the grid circle.

[0022] See Figures 1-2 As shown in Figures 3-5, the radius R4 of the curved guide tube wall 1-13 of the negative pressure collecting tube 1-1 of the present invention is between 28 and 40 mm. For example, if the radius R4 is between 30 and 38 mm, the center O4 of the curved surface of the curved guide tube wall 1-13 is located below and behind the center O3 of the rod hole of the tension support seat 1-22. The drafted yarn passes smoothly through the curved guide tube wall 1-13 through the front opening of the front roller 12 and enters the toothed working surface of the collecting bottom roller 5.

[0023] See Figure 2 As shown, the thickness h1 of the arc-shaped guide tube wall 1-13 of the negative pressure collecting tube 1-1 of the present invention is between 0.7 and 2 mm, and the minimum thickness h2 of the rib plate 1-2 is between 2 and 5 mm. For example, if the thickness h1 is between 0.8 and 1.8 mm, and h2 is between 2.5 and 4.5 mm, in order to maintain the overall strength of the special-shaped tube 1, the thickness h1 of the arc-shaped guide tube wall 1-13 of the present invention is ≥ the thickness of other tube walls of the negative pressure collecting tube 1-1.

[0024] See Figure 2 、 5 As shown, the front arc surface of the special-shaped tube 1 of the present invention is tangent to the arc surface of the tension support seat 1-22 and transitions smoothly. The distance H2 between the center O3 of the rod hole of the tension support seat 1-22 and the center O1 of the gathering lower roller is between 3mm upward and 3mm downward based on the center O1 of the gathering lower roller. For example, the distance H2 between the center O3 of the rod hole of the tension support seat 1-22 and the center O1 of the gathering lower roller is within ±2mm based on the center O1 of the gathering lower roller. The bottom tube wall of the negative pressure gathering tube 1-1 transitions to the tension support seat 1-22 through the arc surface. The surface of the rib plate 1-2 is smooth and not easy to accumulate cotton. The tension support point of the present invention is located at the rear of the center O1 of the gathering lower roller, which not only makes the surrounding arc of the mesh ring 3 and the gathering lower roller 5 longer, the friction is large, and the synchronization of the mesh ring 3 is good, but also keeps it away from the suction port of the cotton suction flute, reducing the accumulation of flying cotton inside the mesh ring 3.

[0025] See Figures 1 to 5 As shown, the present invention is a tension support mechanism for a gathering spinning device, comprising a special-shaped tube 1, a tension support arm 9, a tension spring 10, and a tension rod 11. One side of the tension support arm 9 is provided with a tension rod seat 9-1 for the tension rod 11 to pass through, and the other side is provided with an arc seat 9-3 for supporting and guiding the mesh ring 3. The arc seat 9-3 is located on the rear side of the gathering lower roller 5. The tension support arm 9 is provided with a side baffle 9-2 for axially limiting the mesh ring 3. The tension support arm 9 is provided with a spring notch 9-11 on the tension rod seat 9-1. Each tension support arm 9 is arranged at the mounting groove 1-23 corresponding to the tension support seat 1-22. Figure 4 、 5 As shown, the tension rod 11 of the utility model is passed through the rod hole 1-24 of the tension support seat 1-22 and the tension rod seat 9-1 and tension spring 10 of each corresponding tension support arm 9, and the tension support arm 9 and the tension spring 10 are installed on the tension support seat 1-22 of the special-shaped tube 1, and the two ends of the tension spring 10 are respectively pressed against the inner side of the tension support arm 9 and the installation groove 1-23. One end of the tension spring 10 is against the bottom of the installation groove 1-23, and the other side is pressed against the inner side of the tension support arm. The spring force provided by the tension spring 10 enables the tension support arm to provide tension to the grid ring 3. The tension rod 11 is disconnected at the gear yielding groove 1-21, so that both sides of the tension rod 11 connected to each tension support arm 9 are supported in the rod hole 1-24, which greatly improves the assembly accuracy of the tension support mechanism. The tension rod 11 of the present invention adopts a coaxial long tension rod and a short tension rod, which are respectively passed through the rod hole 1-24 of the tension support seat 1-22 and the corresponding tension support arm 9, tension spring 10 and tension rod mounting hole 2-3 of the end cover 2, and the tension support arm 9 and tension spring 10 are installed on the tension support seat 1-22 and the end cover 2.

[0026] See Figure 4 As shown, the tension support arm 9 of the utility model is provided with a rod groove 9-4 corresponding to the spring notch 9-11 and for accommodating the spring rod. One spring rod of the tension spring 10 is placed horizontally and pressed against the mounting groove 1-23. The other spring rod of the tension spring 10 is arranged in the rod groove 9-4. The tension spring 10 can adopt a torsion spring. The spring rods at both ends of the tension spring 10 are respectively arranged in the mounting groove 1-23 and the rod groove 9-4 of the tension support arm, so that the spring rod of the tension spring 10 is located at the upper part of the lower grid ring 3, which can reduce the flower gathering phenomenon at the tension spring 10.

[0027] See Figure 4 、 5As shown, the radius R5 of the arc seat 9-3 on the tension support arm 9 of the utility model is between 1 and 5 mm. For example, the radius R5 of the arc seat 9-3 is between 2 and 3 mm. The distance H1 between the center O5 of the arc seat on the tension support arm 9 and the center O1 of the gathering lower roller is between 6 mm upward and 3 mm downward based on the center O1 of the gathering lower roller. For example, the distance H1 is between 4 mm upward and 1 mm downward based on the center O1 of the gathering lower roller. A side baffle 9-2 is provided on the lower front side of the arc seat 9-3 to ensure the enclosing arc length of the grid ring 3 and the gathering lower roller 5, so that the grid rings 3 of each spindle have better synchronization.

[0028] See Figure 3 、 4 As shown, the two ends of the special-shaped tube 1, the gathering lower roller 5 and the tension rod 11 of the utility model are installed on the end cover 2, the negative pressure gathering tube seat 2-2 on the end cover 2 is connected to the end of the negative pressure gathering tube 1-1 and crimped on the elastic end plug 6, and the two ends of the gathering lower roller 5 are installed in the bearing seat 2-1 of the end cover 2 through the sealing gasket 8 and the bearing 7, the grid ring 3 is mounted on the toothed working surface of the negative pressure gathering tube 1-1 and the gathering lower roller 5 and the tension support arm 9, the grid ring 3 is covered on the corresponding airflow guide groove 1-12, and the assembled special-shaped tube assembly is installed on the roller seat through the positioning surface of the end cover 2.

Claims

1. A special-shaped tube for a concentrated spinning device, characterized in that: It includes an integrated negative pressure collecting tube with a smooth surface and a negative pressure cavity, and a rib plate extending from the lower part of the negative pressure collecting tube to the side of the collecting lower roller, the negative pressure collecting tube is provided with at least one suction joint communicating with the negative pressure cavity and a plurality of air flow guide grooves on the arc-shaped guide tube wall; the lower part of the rib plate is provided with a tension support seat, the tension support seat is provided with a rod hole for installing a tension rod, the tension support seat is provided with installation grooves corresponding to the air flow guide grooves and used to install the tension support arm, and a gear yielding groove for avoiding the bridge gear.

2. The special-shaped tube for a concentrated spinning device according to claim 1, characterized in that: The center O2 of the front arc surface of the special-shaped tube is eccentrically arranged with respect to the center O1 of the focusing bottom roller.

3. The special-shaped tube for a concentrated spinning device according to claim 2, characterized in that: The center O2 of the front arc surface of the special-shaped tube is located at the rear lower part of the center O1 of the lower focusing roller. The front arc surface includes the front side tube wall and rib plate of the negative pressure focusing tube with the same center and equal diameter. The eccentric distance e1 between the center O2 of the front arc surface and the center O1 of the lower focusing roller is between 1.5-3mm and e2 is between 0.5-1.5mm. The radius R3 of the front arc surface is between 10.5 and 15mm.

4. The special-shaped tube for a compact spinning device according to claim 1, characterized in that: The special-shaped tube transitions to the front tube wall and the rear tube wall through circular arcs at the front and rear ends of the arc-shaped guide tube wall. The outer radius R1 of the circular arc is between 0.5 and 2.5 mm, and the inner radius R2 of the circular arc is between 0.5 and 2 mm.

5. The special-shaped tube for a compact spinning device according to claim 1, characterized in that: The radius R4 of the arc-shaped guide tube wall of the negative pressure collecting tube is between 28 and 40 mm, and the arc surface center O4 of the arc-shaped guide tube wall is located at the rear lower side of the rod hole center O3 of the tension support seat.

6. The special-shaped tube for a compact spinning device according to claim 1, characterized in that: The thickness h1 of the arc-shaped guide tube wall of the negative pressure collecting tube is between 0.7 and 2 mm, and the minimum thickness h2 of the rib plate is between 2 and 5 mm.

7. The special-shaped tube for a compact spinning device according to claim 1, characterized in that: The front arc surface of the special-shaped tube is tangent to the arc surface of the tension support seat and transitions smoothly. The distance H2 between the center O3 of the rod hole of the tension support seat and the center O1 of the lower gathering roller is between 3mm upward and 3mm downward based on the center O1 of the lower gathering roller. The bottom tube wall of the negative pressure gathering tube transitions to the tension support seat through the arc surface.

8. A tension support mechanism for a compact spinning device, characterized in that: It comprises the special-shaped tube as claimed in any one of claims 1 to 7, and a tension supporting arm, a tension spring and a tension rod, wherein one side of the tension supporting arm is provided with a tension rod seat for the tension rod to pass through, and the other side is provided with an arc seat for supporting and guiding the grid ring, the arc seat is located on the rear side of the gathering lower roller, the tension supporting arm is provided with a side baffle for axially limiting the grid ring, the tension rod seat of the tension supporting arm is provided with a spring notch, and each tension supporting arm is arranged at a mounting groove corresponding to the tension supporting seat; the tension rod is passed through the rod hole of the tension supporting seat and the tension rod seat and tension spring of each corresponding tension supporting arm, and the tension supporting arm and the tension spring are installed on the tension supporting seat of the special-shaped tube, the two ends of the tension spring are respectively pressed against the inner side and the mounting groove of the tension supporting arm, and the tension rod is disconnected at the gear yielding notch.

9. A tension support mechanism for a compact spinning device according to claim 8, characterized in that: The tension support arm is provided with a rod groove corresponding to the spring notch and used to accommodate the spring rod. One spring rod of the tension spring is placed horizontally and supported in the installation groove, and the other spring rod of the tension spring is arranged in the rod groove.

10. A tension support mechanism for a compact spinning device according to claim 8, characterized in that: The radius R5 of the arc seat on the tension support arm is between 1 and 5 mm, and the distance H1 between the center O5 of the arc seat on the tension support arm and the center O1 of the gathering lower roller is between 6 mm upward and 3 mm downward based on the center O1 of the gathering lower roller, and a side baffle is provided on the lower front side of the arc seat.

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