Tension adjustment device for carding machine

Abstract

The utility model provides a tension regulating device for a wool combing machine, which effectively solves the problems of poor tension control effect, small range, insufficient precision and easy yarn breakage of the tension regulating device in the existing wool combing machine; the technical solution thereof comprises a frame, a horizontal and rotatable intermediate roller is arranged in the frame, fixed plates are arranged at both ends of the intermediate roller, the fixed plates are fixed on the frame, the intermediate roller is rotatably connected with the fixed plates, a small plate is arranged at the lower end of each fixed plate, and a telescopic mechanism is installed between the small plate and the fixed plate; tension rollers parallel to the intermediate roller are arranged at the front and rear sides of the intermediate roller, the front and rear ends of the fixed plate are hinged with swing rods, and one end of the swing rod away from the fixed rod is rotatably connected with the tension roller; the front and rear ends of the small plate are hinged with a connecting rod, and one end of the connecting rod away from the small plate is hinged with the middle part of the swing rod; when the telescopic mechanism drives the small plate to move up and down, the small plate drives the swing rod to swing up and down via the connecting rod, so as to realize tension regulation.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery, in particular to a tension regulating device for a wool combing machine. Background Art

[0002] The carding machine needs to strictly control the tension during the yarn finishing process. Too much tension can easily lead to yarn breakage, and too little tension can lead to low winding quality. Currently, it is mainly achieved by setting a fixed tension roller and a movable tension roller, changing the relative positions of the two tension rollers to change the yarn wrap angle, and then adjusting the yarn tension. This method has a small adjustable range and is prone to yarn breakage. The public patent document CN207861611U discloses a tension adjustment device for a warping machine. In this scheme, a cylinder 8, a support frame 3 and a rocker arm 5 are used to drive two rollers to swing up and down, thereby realizing tension adjustment. However, its adjustment range is still limited, and the tension control effect is not good. The yarn trajectory is S-shaped, which also makes it easy for relative displacement to occur between the yarn and the roller, thereby causing yarn breakage. The tension adjustment device for a warping machine disclosed in the patent document CN214655506U can realize two adjustment modes: large-scale adjustment and small-scale adjustment. However, in actual use, the yarn trajectory is still S-shaped, and there is still slippage between the yarn and the roller, and it is inconvenient to operate during adjustment.

[0003] A tension adjustment device for a wool combing machine is now provided, which can meet the requirements of a large adjustment range and a high tension adjustment accuracy. Deformation and relative displacement are not likely to occur between the yarn and the roller, thereby greatly reducing the risk of yarn breakage and the difficulty of adjustment. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a tension adjustment device for a wool combing machine, which effectively solves the problems of poor tension control effect, small range and insufficient accuracy of the tension adjustment device in the prior wool combing machine, and easy yarn breakage.

[0005] The technical solution is as follows: it includes a frame, a horizontal and rotatable intermediate roller is arranged in the frame, both ends of the intermediate roller are provided with fixed plates, the fixed plates are fixed on the frame, the intermediate roller is rotatably connected to the fixed plates, each fixed plate has a small plate at the lower end, a telescopic mechanism is installed between the small plate and the fixed plate; tension rollers parallel to the intermediate roller are arranged on the front and rear sides, the front and rear ends of the fixed plate are hinged with swing rods, the end of the swing rod away from the fixed rod is rotatably connected to the tension roller; the front and rear ends of the small plate are hinged with a connecting rod, the end of the connecting rod away from the small plate is hinged to the middle part of the swing rod; when the telescopic mechanism drives the small plate to move up and down, the small plate drives the swing rod to swing up and down via the connecting rod to realize tension adjustment.

[0006] Furthermore, the telescopic mechanism includes a double-ended lead screw, and threaded barrels are screwed on both ends of the double-ended lead screw through threads. The threaded barrel on the upper side is fixed to the fixed plate, and the threaded barrel on the lower side is fixed to the small plate; screwing the double-ended lead screw can control the up and down movement of the small plate.

[0007] Furthermore, the telescopic mechanism is an electric cylinder or a pneumatic cylinder.

[0008] Furthermore, a sleeve is mounted on the intermediate roller, an annular space is provided between the sleeve and the outer surface of the intermediate roller, and a plurality of compression springs are connected between the inner wall of the sleeve and the outer surface of the intermediate roller.

[0009] Furthermore, the diameter of the middle portion of the tension roller is smaller than the diameters of the two ends.

[0010] The utility model has an ingenious structure, which can meet the requirements of a large adjustment range and the tension adjustment accuracy. It is not easy for deformation and relative displacement to occur between the yarn and the roller, thereby greatly reducing the risk of yarn breakage and the difficulty of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front sectional view of the utility model.

[0012] Figure 2 It is a top view of the utility model.

[0013] Figure 3 for Figure 1 Middle AA section view.

[0014] Figure 4 It is a schematic diagram of the direction of the middle roller, the tension roller and the yarn when the utility model is used. DETAILED DESCRIPTION

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0016] Depend on Figures 1 to 4 The utility model includes a frame 1, in which a horizontal and rotatable intermediate roller 2 is arranged, and fixed plates 3 are arranged at both ends of the intermediate roller 2, and the fixed plates 3 are fixed on the frame 1, and the intermediate roller 2 is rotatably connected to the fixed plates 3, and a small plate 4 is arranged at the lower end of each fixed plate 3, and a telescopic mechanism is installed between the small plate 4 and the fixed plate 3; tension rollers 5 parallel to the intermediate roller 2 are arranged at the front and rear sides, and a rocker rod 6 is hinged at both the front and rear ends of the fixed plate 3, and the end of the rocker rod 6 away from the fixed rod is rotatably connected to the tension roller 5; a connecting rod 7 is hinged at both the front and rear ends of the small plate 4, and the end of the connecting rod 7 away from the small plate 4 is hinged to the middle part of the rocker rod 6; when the telescopic mechanism drives the small plate 4 to move up and down, the small plate 4 drives the rocker rod 6 to swing up and down via the connecting rod 7, so as to realize tension adjustment.

[0017] The telescopic mechanism includes a double-headed screw 8, and threaded tubes 9 are screwed on both ends of the double-headed screw 8. The threaded tube 9 on the upper side is fixed to the fixed plate 3, and the threaded tube 9 on the lower side is fixed to the small plate 4; screwing the double-headed screw 8 can control the up and down movement of the small plate 4.

[0018] The telescopic mechanism is an electric cylinder or a pneumatic cylinder.

[0019] In order to prevent yarn breakage, a sleeve 10 is mounted on the middle roller 2. An annular space is provided between the sleeve 10 and the outer surface of the middle roller 2. A plurality of compression springs are connected between the inner wall of the sleeve 10 and the outer surface of the middle roller 2.

[0020] In order to gather the yarns toward the middle, the diameter of the middle portion of the tension roller 5 is smaller than the diameters at both ends.

[0021] It is worth noting that in this device, a sensor can be installed on the middle roller 2 or the tension roller 5 to control the extension or contraction of the telescopic mechanism to achieve tension adjustment; when the telescopic mechanism adopts a double-headed screw 8 structure, a servo motor can be connected to the double-headed screw 8, and the servo motor is fixed under the small plate 4.

[0022] When in use, for the sake of convenience, it is assumed that the yarn is transmitted from back to front; the yarn passes from back to front, first over the rear tension roller 5, then under the middle roller 2, and finally over the front tension roller 5. At this point, the yarn is completely out of the tension adjustment device.

[0023] When the tension needs to be adjusted, the telescopic mechanism is controlled to extend or contract, so that the small plate 4 moves up and down. The small plate 4 moves up and down, and the connecting rod 7 drives the swing rod 6 to swing up and down. During the swing, the yarn is tightened or relaxed, and finally the tension is adjusted.

[0024] In this solution, there is a gap between the sleeve 10 and the middle roller 2, and there are multiple compression springs in the gap, so that during the tension adjustment process, even if the tension is not adjusted to the accurate value for a while, the yarn will not break immediately, and it has a large fault tolerance rate.

[0025] Compared with the traditional structure of adjusting the tension with two rollers, the utility model adopts three rollers for adjustment. Firstly, the yarn direction is changed from an unbalanced S shape to a more balanced inverted W shape, which can avoid the displacement between the yarn and the rollers to a great extent and greatly reduce the risk of yarn breakage. Secondly, the double-headed screw 8 is adopted in the device for adjustment, which has the characteristics of large stroke and high precision, and can realize the tension adjustment over a large range and with high precision.

[0026] The utility model has an ingenious structure, which can meet the requirements of a large adjustment range and the tension adjustment accuracy. It is not easy for deformation and relative displacement to occur between the yarn and the roller, thereby greatly reducing the risk of yarn breakage and the difficulty of adjustment.

Claims

1. A tension adjustment device for a wool combing machine, characterized in that: The invention comprises a frame (1), wherein a horizontal and rotatable intermediate roller (2) is arranged in the frame (1), and fixed plates (3) are arranged at both ends of the intermediate roller (2), and the fixed plates (3) are fixed on the frame (1), and the intermediate roller (2) and the fixed plates (3) are rotatably connected, and a small plate (4) is arranged at the lower end of each fixed plate (3), and a telescopic mechanism is installed between the small plate (4) and the fixed plate (3); tension rollers (5) are arranged parallel to the intermediate roller (2) at the front and rear ends, and swing rods (6) are hinged at the front and rear ends of the fixed plate (3), and the end of the swing rod (6) away from the fixed rod is rotatably connected to the tension roller (5); a connecting rod (7) is hinged at the front and rear ends of the small plate (4), and the end of the connecting rod (7) away from the small plate (4) is hinged to the middle part of the swing rod (6); when the telescopic mechanism drives the small plate (4) to move up and down, the small plate (4) drives the swing rod (6) to swing up and down via the connecting rod (7), so as to realize tension adjustment.

2. The tension adjustment device for a combing machine according to claim 1, characterized in that: The telescopic mechanism comprises a double-ended lead screw (8), and threaded barrels (9) are screwed onto both ends of the double-ended lead screw (8) via threads, the threaded barrel (9) on the upper side is fixed to the fixed plate (3), and the threaded barrel (9) on the lower side is fixed to the small plate (4); screwing the double-ended lead screw (8) can control the up and down movement of the small plate (4).

3. The tension adjustment device for a wool combing machine according to claim 1, characterized in that: The telescopic mechanism is an electric cylinder or a pneumatic cylinder.

4. The tension adjustment device for a combing machine according to claim 1, characterized in that: The intermediate roller (2) is sleeved with a sleeve (10), an annular space is provided between the sleeve (10) and the outer surface of the intermediate roller (2), and a plurality of compression springs are connected between the inner wall of the sleeve (10) and the outer surface of the intermediate roller (2).

5. The tension adjustment device for a wool combing machine according to claim 1, characterized in that: The diameter of the middle portion of the tension roller (5) is smaller than the diameters at both ends.

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