Yarn feeding mechanism for slub yarn production

Abstract

The yarn feeding mechanism for slub yarn production comprises a base, a yarn guide frame is installed on the rear side of the upper end face of the base, and fixing frames are installed on the two sides of the front end of the upper end face of the base. The adjusting rods are arranged at the front end of the yarn guide frame, yarn guide cylinders are arranged on one sides of the adjusting rods, and the yarn guide cylinders and the adjusting rods are fixed through clamping rings; the transmission cavity is formed in an upper transverse frame and a lower transverse frame of the yarn guide frame, a rack is arranged on the front side of the transmission cavity in the direction close to the yarn guide barrel, a limiting tooth groove is formed in the rear side of the transmission cavity and is aligned to the rack, and the upper end and the lower end of the adjusting rod extend into the transmission cavity correspondingly; the ends, located in the transmission cavity, of the adjusting rods are provided with gears, the gears are connected with the adjusting rods through bearings, and the problem that due to the fact that the fixing structure of the cylinder for conveying yarn is simple, the cylinder cannot be matched with a pay-off mechanism and a tension mechanism to adjust the distance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of slubby yarn production devices, in particular to a yarn feeding mechanism for slubby yarn production. Background Art

[0002] The digital slub yarn production device is an advanced device that utilizes computer control, digital drive, and communication technologies to precisely control the slub yarn production process, including parameters such as slub length, thickness, spacing, and pattern. Suitable for retrofitting and supporting a variety of spinning machines, it significantly improves slub yarn production efficiency and product quality. The yarn feed mechanism maintains constant yarn tension and stable yarn transmission during slub yarn production. It consists of a series of specially designed components that ensure precise control of yarn tension and speed during yarn transmission.

[0003] For example, the Chinese authorized patent with announcement number CN214361996U, "A yarn guide mechanism for textile production", includes a yarn guide plate, a fixed frame and a yarn guide wheel installed in the yarn guide plate, the two ends of the yarn guide plate are fixedly connected with a fixed frame, the fixed frame includes a fixed seat, a support leg and a fixed plug-in, the lower surface of the fixed seat is provided with two rotatably connected support legs, the upper surface of the fixed seat is provided with a plug-in connected fixed plug-in, the fixed plug-in is located between the two support legs, the surface of the yarn guide plate is provided with a yarn threading hole, the inside of the yarn threading hole is provided with a rotatably connected yarn guide wheel, the center of the yarn guide wheel is provided with a rotating shaft running through it, the rotating shaft is rotatably connected to the yarn guide wheel and the two ends are fixedly connected to the yarn threading hole respectively. By fixing a fixed frame with convenient height adjustment on both sides of the yarn guide plate, cooperating with the yarn guide wheel rotatably connected in the yarn guide plate, the convenience of yarn retraction and release when the textile machine is working is improved, and the friction during the yarn feeding process is reduced.

[0004] The above-mentioned existing technology will be used in conjunction with a variety of digital slub yarn production devices in actual use. However, the cylinder used to transport the yarn has a relatively simple fixed structure and cannot be coordinated with the pay-off mechanism and the tension mechanism for spacing adjustment, thereby affecting the yarn transportation quality. Therefore, it does not meet the existing needs. In this regard, we propose a yarn feeding mechanism for slub yarn production. Utility Model Content

[0005] The purpose of the utility model is to provide a yarn feeding mechanism for slub yarn production, so as to solve the problem that the yarn conveying cylinder proposed in the above background technology cannot cooperate with the pay-off mechanism and the tension mechanism for spacing adjustment due to its relatively simple fixed structure.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a yarn feeding mechanism for producing slub yarn, comprising a base, a yarn guide frame mounted on the rear side of the upper end surface of the base, and the yarn guide frame is welded and fixed to the base, and fixing frames are mounted on both sides of the front end of the upper end surface of the base, and the fixing frames are fixed to the base by bolts; and further comprising:

[0007] An adjusting rod is provided at the front end of the yarn guide frame, and at least seven adjusting rods are provided. The adjusting rods are slidably engaged with the upper and lower first guide grooves at the front end of the yarn guide frame. A yarn guide cylinder is provided on one side of the adjusting rod, and the yarn guide cylinder and the adjusting rod are fixed by a clamping ring;

[0008] The transmission cavity is arranged inside the upper and lower cross frames of the yarn guide frame. A rack is provided on the front side of the transmission cavity near the yarn guide tube. A limiting tooth groove is provided on the rear side of the transmission cavity, and the limiting tooth groove is aligned with the rack. The upper and lower ends of the adjusting rod extend to the interior of the transmission cavity respectively. A gear is installed on one end of the adjusting rod located inside the transmission cavity, and the gear and the adjusting rod are connected through a bearing.

[0009] Preferably, a second guide slot is provided at the rear of the transmission chamber, and an elastic reset mechanism is installed inside the second guide slot to provide a contraction force for the gear. The elastic reset mechanism is composed of a telescopic rod and a support spring. A pulley is rotatably installed at the rear end of the elastic reset mechanism, and a slideway for the pulley to move is provided in the upper and lower cross frames of the yarn guide frame.

[0010] Preferably, the gear is located in the front of the transmission cavity and is meshed with the rack, and the gear is located in the rear of the transmission cavity and is engaged with the limiting tooth groove.

[0011] Preferably, a notch is provided on one side of the adjusting rod.

[0012] Preferably, there are at least seven tension adjustment mechanisms between the two fixing frames, adjacent tension adjustment mechanisms are connected by connecting rods, the edge tension adjustment mechanisms are rotatably matched with the fixing frames through connecting shafts, and tension wheels are rotatably installed on the upper and lower parts of the tension adjustment mechanisms.

[0013] Preferably, a detection ring is fixedly installed at one end of the connecting shaft, a protrusion is fixedly provided on the edge of the detection ring, a detection groove is provided at the upper end inside the fixed frame, and the detection groove is an arc-shaped structure, pressure sensors are installed on both sides of the top of the detection groove, the output end of the pressure sensor is connected to the single-chip microcomputer, the output end of the single-chip microcomputer is connected to the servo motor for retracting and releasing the yarn, and a torsion spring is installed on the outside of the connecting shaft.

[0014] Preferably, mounting plates are fixedly provided on both sides of the base.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The adjusting mechanism is convenient and easy to operate, and the spacing of the yarn guide drum can be adjusted by simply pulling the adjusting rod and the gear can be fixed by itself after releasing the hand to avoid position deviation.

[0017] 2. The utility model is provided with a tension adjusting mechanism. During the yarn feeding process, the yarn passes through the upper and lower tension wheels in an S shape. Under the action of the torsion spring, it can provide tensioning force for the tension adjusting mechanism. Therefore, under normal yarn feeding state, the protrusion outside the detection ring can move freely in the detection area of ​​the detection groove. When the protrusion touches the pressure sensor on one side, it indicates that the yarn is transported too fast, resulting in tension. At this time, the pressure sensor sends a signal to the single-chip microcomputer, which controls the servo motor of the yarn to slow down and avoid yarn breaking. If the yarn transportation speed is too slow, the torsion spring will reset, driving the protrusion on the detection ring to touch the pressure sensor on the other side, and the pressure sensor sends a signal to the single-chip microcomputer, which controls the servo motor of the yarn to speed up, thereby avoiding the yarn tension being too small to affect the production quality. The tension adjusting mechanism has high flexibility, which can ensure that the yarn always maintains constant tension and speed during the transmission process, thereby ensuring the quality and output of the slub yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 For this utility model Figure 1 A partial enlarged view of area A in the middle;

[0020] Figure 3 This is a side view of the yarn guide tube and yarn guide frame adjustment structure of the utility model;

[0021] Figure 4 This is a front view of the interior of the yarn guide tube and yarn guide frame adjustment structure of the present invention;

[0022] Figure 5This is a schematic diagram of the internal structure of the detection tank of the present utility model.

[0023] In the figure: 1. Base; 2. Yarn guide frame; 3. Adjusting rod; 4. Yarn guide cylinder; 5. Fixed frame; 6. Tension adjustment mechanism; 7. Connecting rod; 8. Tension wheel; 9. Mounting plate; 10. First guide slot; 11. Notch; 12. Gear; 13. Rack; 14. Limiting tooth slot; 15. Second guide slot; 16. Elastic reset mechanism; 17. Pulley; 18. Connecting shaft; 19. Detection ring; 20. Bump; 21. Detection slot; 22. Pressure sensor; 23. Torsion spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1-5 The present invention provides an embodiment of a yarn feeding mechanism for producing slub yarn, comprising a base 1, a yarn guide frame 2 mounted on the rear side of the upper end surface of the base 1, and the yarn guide frame 2 is welded and fixed to the base 1, and fixing frames 5 are mounted on both sides of the front end of the upper end surface of the base 1, and the fixing frames 5 are fixed to the base 1 by bolts; and further comprising:

[0026] An adjusting rod 3 is provided at the front end of the yarn guide frame 2. There are at least seven adjusting rods 3, and the adjusting rods 3 slide in cooperation with the upper and lower first guide slots 10 at the front end of the yarn guide frame 2. A yarn guide cylinder 4 is provided on one side of the adjusting rod 3, and the yarn guide cylinder 4 is fixed to the adjusting rod 3 by a clamping ring.

[0027] The transmission cavity is arranged inside the upper and lower cross frames of the yarn guide frame 2. A rack 13 is provided on the front side of the transmission cavity near the yarn guide tube 4. A limiting tooth groove 14 is provided on the rear side of the transmission cavity, and the limiting tooth groove 14 is aligned with the rack 13. The upper and lower ends of the adjusting rod 3 extend to the inside of the transmission cavity respectively. A gear 12 is installed at one end of the adjusting rod 3 located inside the transmission cavity, and the gear 12 is connected to the adjusting rod 3 through a bearing.

[0028] When cooperating with different types of digital slub yarn production devices, the staff can make corresponding adjustments to the yarn guide drum 4 by simply inserting a finger into the notch 11 of the adjusting rod 3 and pulling it in the direction of the tension mechanism to move the gear 12 out from the inside of the limiting tooth groove 14, forming an independent engagement between the gear 12 and the rack 13, and then moving the adjusting rod 3 according to the yarn delivery position. The gear 12 rotates in conjunction with the rack 13 to improve the stability of the adjusting rod 3 in the movement process of the yarn guide drum 4. At the same time, the gear 12 drives the elastic reset mechanism 16 and the pulley 17 to move in the second guide slot 15. After moving to the set position, the staff releases the notch 11, and under the reset action of the support spring on the elastic reset mechanism 16, drives the gear 12 to move in the direction of the limiting tooth groove 14 until it completely enters the interior. After the gear 12 enters the limiting tooth groove 14, it cannot rotate, thereby fixing the yarn guide drum 4 at this position.

[0029] See also Figure 3 and Figure 4 A second guide slot 15 is provided at the rear of the transmission cavity. An elastic reset mechanism 16 is installed inside the second guide slot 15 to provide a contraction force for the gear. The elastic reset mechanism 16 is composed of a telescopic rod and a supporting spring. A pulley 17 is rotatably installed at the rear end of the elastic reset mechanism 16, and a slideway for the movement of the pulley 17 is provided in the upper and lower cross frames of the yarn guide frame 2. The elastic reset mechanism 16 can not only cooperate with the gear 12 for lateral movement, but also provide a contraction force for the gear 12. The adjustment mechanism is convenient and easy to operate. You only need to pull the adjusting rod 3 to adjust the spacing of the yarn guide tube 4, and it can be fixed by itself after releasing it to avoid position displacement.

[0030] See also Figure 3 and Figure 4 The gear 12 is located in the front position of the transmission cavity and is meshed with the rack 13. The gear 12 is located in the rear position of the transmission cavity and is engaged with the limit tooth groove 14. The gear 12 is located in the front position of the transmission cavity and belongs to the adjustment working control. The gear 12 is located in the rear position of the transmission cavity and belongs to the static working condition.

[0031] See also Figure 2 A notch 11 is provided on one side of the adjusting rod 3 to facilitate operation by the staff.

[0032] See also Figure 1 There are at least seven tension adjustment mechanisms 6 between the two fixed frames 5. The adjacent tension adjustment mechanisms 6 are connected by connecting rods 7. The edge tension adjustment mechanism 6 and the fixed frame 5 are rotated together through the connecting shaft 18. The tension adjustment mechanism 6 is internally installed with tension wheels 8 at the top and bottom. The tension wheel 8 can provide tension to the yarn, thereby providing a yarn conveying effect.

[0033] See also Figure 5A detection ring 19 is fixedly installed at one end of the connecting shaft 18, and a protrusion 20 is fixedly provided on the edge of the detection ring 19. A detection groove 21 is provided at the upper end inside the fixed frame 5, and the detection groove 21 is an arc-shaped structure. Pressure sensors 22 are installed on both sides of the top of the detection groove 21. The output end of the pressure sensor 22 is connected to the single-chip microcomputer, and the output end of the single-chip microcomputer is connected to the servo motor for retracting and releasing the yarn. A torsion spring 23 is installed on the outside of the connecting shaft 18. The tension adjustment mechanism has high flexibility and can ensure that the yarn always maintains a constant tension and speed during the transmission process, thereby ensuring the quality and output of the slub yarn.

[0034] Working principle: During the yarn feeding process, the yarn passes through the upper and lower tension wheels 8 in an S shape. Under the action of the torsion spring 23, it can provide tensioning force for the tension adjustment mechanism 6, so that under normal yarn feeding state, the protrusion 20 outside the detection ring 19 can move freely in the detection area of ​​the detection groove 21. When the protrusion 20 touches the pressure sensor 22 on one side, it means that the yarn is transported too fast, resulting in tension. At this time, the pressure sensor 22 sends a signal to the microcontroller, and the microcontroller controls the servo motor for retracting and releasing the yarn to slow down to avoid the yarn from breaking. If the yarn transportation speed is too slow, the torsion spring 23 will reset, driving the protrusion 20 on the detection ring 19 to touch the pressure sensor 22 on the other side, and the pressure sensor 22 sends a signal to the microcontroller, which controls the servo motor for retracting and releasing the yarn to speed up, thereby avoiding the yarn tension being too low to affect the production quality.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above 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 in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A yarn feeding mechanism for producing slub yarn, comprising a base (1), a yarn guide frame (2) being mounted on the rear side of the upper end face of the base (1), and the yarn guide frame (2) being welded and fixed to the base (1), and fixing frames (5) being mounted on both sides of the front end of the upper end face of the base (1), and the fixing frames (5) being fixed to the base (1) by bolts; Its characteristics are: Also includes: An adjusting rod (3) is provided at the front end of the yarn guide frame (2), at least seven adjusting rods (3) are provided, and the adjusting rods (3) are slidably matched with the upper and lower first guide slots (10) at the front end of the yarn guide frame (2), a yarn guide cylinder (4) is provided on one side of the adjusting rod (3), and the yarn guide cylinder (4) and the adjusting rod (3) are fixed by a clamping ring; A transmission cavity is provided inside the upper and lower cross frames of the yarn guide frame (2); a rack (13) is provided on the front side of the transmission cavity in a direction close to the yarn guide cylinder (4); a limiting tooth groove (14) is provided on the rear side of the transmission cavity, and the limiting tooth groove (14) is aligned with the rack (13); the upper and lower ends of the adjusting rod (3) respectively extend into the interior of the transmission cavity; a gear (12) is installed on one end of the adjusting rod (3) located inside the transmission cavity, and the gear (12) and the adjusting rod (3) are connected through a bearing.

2. A yarn feeding mechanism for producing slub yarn according to claim 1, characterized in that: A second guide slot (15) is provided at the rear of the transmission cavity. An elastic reset mechanism (16) for providing a contraction force for the gear is installed inside the second guide slot (15). The elastic reset mechanism (16) is composed of a telescopic rod and a supporting spring. A pulley (17) is rotatably installed at the rear end of the elastic reset mechanism (16), and a slideway for the pulley (17) to move is provided in the upper and lower horizontal frames of the yarn guide frame (2).

3. The yarn feeding mechanism for producing slub yarn according to claim 1, characterized in that: The gear (12) is located in the front of the transmission chamber and is meshed with the rack (13), and the gear (12) is located in the rear of the transmission chamber and is engaged with the limiting tooth groove (14).

4. A yarn feeding mechanism for producing slub yarn according to claim 1, characterized in that: A notch (11) is provided on one side of the adjusting rod (3).

5. The yarn feeding mechanism for producing slub yarn according to claim 1, characterized in that: There are at least seven tension adjustment mechanisms (6) between the two fixing frames (5), and adjacent tension adjustment mechanisms (6) are connected by connecting rods (7). The edge tension adjustment mechanisms (6) and the fixing frames (5) are rotatably matched through connecting shafts (18), and tension wheels (8) are rotatably installed on the upper and lower parts of the tension adjustment mechanisms (6).

6. A yarn feeding mechanism for producing slub yarn according to claim 5, characterized in that: A detection ring (19) is fixedly mounted on one end of the connecting shaft (18), and a protrusion (20) is fixedly mounted on the edge of the detection ring (19). A detection groove (21) is provided at the upper end inside the fixing frame (5), and the detection groove (21) is in an arc-shaped structure. Pressure sensors (22) are mounted on both sides of the top of the detection groove (21). The output end of the pressure sensor (22) is connected to a single-chip microcomputer, and the output end of the single-chip microcomputer is connected to a servo motor for retracting and releasing the yarn. A torsion spring (23) is mounted on the outside of the connecting shaft (18).

7. The yarn feeding mechanism for producing slub yarn according to claim 1, characterized in that: Mounting plates (9) are fixedly provided on both sides of the base (1).

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