Active ramie sliver feeding mechanism of drawing frame

Abstract

The utility model relates to an active ramie sliver feeding mechanism of a drawing frame, which comprises sliver buckets for placing ramie slivers, a sliver guide platform, a feeding roller and a power system, the power system drives the feeding roller to rotate, and guide wheels respectively corresponding to the sliver buckets are rotatably mounted on the sliver guide platform; a gear motor of the power system is in transmission connection with a first-stage gear set, the first-stage gear set is in transmission connection with a second-stage gear set, a driven gear of the second-stage gear set drives a feeding roller to rotate through a gear transmission gear train, a driving chain wheel is coaxially installed with a driving gear of the second-stage gear set, and a driven chain wheel is installed on a wheel shaft of a guide wheel. The driving chain wheel is in transmission connection with the driven chain wheel on the first guide wheel shaft, and the driven chain wheels between the adjacent guide wheels are in transmission connection. The guide wheel is driven by the power system to rotate, and the speed ratio between the feeding roller and the guide wheel is controlled between 3% and 5%, so that the ramie strips are always in a constant tension state in the process of entering the feeding roller from the guide wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery, in particular to an active feeding mechanism for flax strips of a drawing frame. Background Art

[0002] The drawing frame is used to improve the internal structure of the flax strips, thereby increasing the uniformity of the long segments of the flax strips and reducing the weight unevenness, so that the fibers in the flax strips are straightened and parallel, with fewer hooks and fineness meeting the requirements.

[0003] The feeding mechanism of the draw frame consists of a sliver can, a guide wheel, a pressure roller, and a feed roller. The guide wheel is located close to the sliver can. The sliver is drawn out of the sliver can by the guide wheel, and is sent to the sliver guide platform in a certain direction. Then, the feed roller sends the sliver to the subsequent drafting mechanism.

[0004] In the existing feeding mechanism, the power system drives the feeding roller to rotate, while the guide wheel is stationary. Under the traction force of the feeding roller, the hemp strips slide over the guide wheel and are fed into the drafting mechanism by the feeding roller. This can easily cause the hemp strips to become tight or loose due to inconsistent tension during the transmission process, affecting the subsequent stable feeding of the hemp strips to the drafting mechanism. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a drawing frame flax strip active feeding mechanism which can ensure the flax strips are fed at a constant tension.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an active feeding mechanism for hemp strips of a drawing frame, comprising four hemp strip barrels arranged side by side for placing hemp strips, a guide strip platform arranged above the strip barrels, a feeding roller and a power system, the power system drives the feeding roller to rotate, and four guide wheels corresponding to the four strip barrels below are rotatably installed on the guide strip platform, the power system comprises a reduction motor, the power output end of the reduction motor is transmission-connected with a primary gear set, the output end of the primary gear set is transmission-connected with a secondary gear set, the driven gear of the secondary gear set drives the feeding roller to rotate through a gear transmission train, a driving sprocket is coaxially installed with the driving gear of the secondary gear set, and driven sprockets are respectively installed on the wheel shafts of the guide wheels, the driving sprocket is transmission-connected to the driven sprocket on the wheel shaft of the first guide wheel, and the driven sprockets between adjacent guide wheels are transmission-connected.

[0007] Specifically, the feeding rollers include a front feeding roller and a rear feeding roller. The slivers in the barrel pass through the corresponding guide wheels and then bypass the rear feeding roller and the front feeding roller in turn to be fed into the subsequent drawing mechanism of the drawing frame.

[0008] In order to better improve the tension during the transmission of the flax strips, a supporting wheel is provided at the front end of the flax strip guide platform, and the supporting wheel supports the flax strips led out from the guide wheel to the rear feeding roller.

[0009] Since the rotational speed of each guide wheel needs to be kept consistent, the driven sprocket includes a double-row sprocket and a single-row sprocket, wherein the double-row sprocket is respectively installed on the axle of the first three guide wheels, and the single-row sprocket is installed on the axle of the last fourth guide wheel.

[0010] The beneficial effects of the utility model are as follows: the utility model sets the guide wheel in a conventional fixed state to a rotating state, the guide wheel is driven to rotate by a power system, and the speed ratio between the feeding roller and the guide wheel is controlled between 3% and 5%, so that the hemp strips are always in a taut state during the process of entering the feeding roller from the guide wheel, thereby ensuring that the tension of the hemp strips remains constant during the transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a transmission principle diagram of the power system of the utility model.

[0014] In the figure: 1. Hemp strips, 2. Strip barrels, 3. Strip guide platform, 4. Feed roller, 4-1. Feed front roller, 4-2. Feed rear roller, 5. Guide wheel, 6. Reducer motor, 7. First-stage gear set, 8. Second-stage gear set, 9. Gear transmission system, 10. Driving sprocket, 11. Driven sprocket, 11-1. Double-row sprocket, 11-2. Single-row sprocket, 12. Support roller. DETAILED DESCRIPTION

[0015] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0016] like Figure 1 、 Figure 2 The illustrated embodiment shows an active feeding mechanism for hemp strips of a drawing frame, comprising a power system, a guide strip platform 3 and a feeding roller 4. Four strip barrels 2 containing hemp strips 1 are arranged side by side at intervals below the guide strip platform 3; four guide wheels 5 are rotatably mounted on the guide strip platform 3, and each guide wheel 5 corresponds to each of the four strip barrels 2 below. The feeding rollers 4 include a front feeding roller 4-1 and a rear feeding roller 4-2. The hemp strips 1 in each strip barrel 2 pass through the corresponding guide wheel 5, and then bypass the rear feeding roller 4-2 and the front feeding roller 4-1 in turn to be fed into the subsequent drawing mechanism of the drawing frame.

[0017] The power system comprises a reduction motor 6, a power output end of the reduction motor 6 is drivingly connected with a first-stage gear set 7, an output end of the first-stage gear set 7 is drivingly connected with a second-stage gear set 8, driven gears of the second-stage gear set 8 drive the feeding front roller 4-1 and the feeding rear roller 4-2 to rotate respectively through a gear transmission system 9.

[0018] A driving sprocket 10 is coaxially installed with a driving gear of the second-stage gear set 8, driven sprockets 11 are respectively installed on wheel shafts of the four guide rollers 5, and the driven sprockets 11 between adjacent guide rollers 5 are drivingly connected.

[0019] Specifically, the driven sprockets 11 are divided into double-row sprockets 11-1 and single-row sprockets 11-2, double-row sprockets 11-1 are installed on wheel shafts of the first to third guide rollers 5, a single-row sprocket 11-2 is installed on a wheel shaft of the last fourth guide roller 5, the driving sprocket 10 is drivingly connected with the double-row sprocket 11-1 on the wheel shaft of the first guide roller 5, then the double-row sprocket 11-1 on the wheel shaft of the first guide roller 5 drivingly connects the double-row sprocket 11-1 on the wheel shaft of the second guide roller 5, the double-row sprocket 11-1 on the wheel shaft of the second guide roller 5 drivingly connects the double-row sprocket 11-1 on the wheel shaft of the third guide roller 5, and the double-row sprocket 11-1 on the wheel shaft of the third guide roller 5 drivingly connects the single-row sprocket 11-2 on the wheel shaft of the fourth guide roller 5.

[0020] In order to better improve the tension of the tow 1 during transmission, a supporting roller 12 is arranged at the front end of the guide platform 3, and the supporting roller 12 supports the tow 1 from the guide roller 5 to the feeding rear roller 4-2.

[0021] Thus, the guide roller 5 originally in a regular fixed state is arranged in a rotating state, the power system driving the feeding roller 4 to rotate drives the guide roller 5 to rotate, and the ratio of the rotating speed of the feeding roller 4 to the rotating speed of the guide roller 5 is controlled to be between 3% and 5%, since the rotating speed of the feeding roller 4 is slightly greater than the rotating speed of the guide roller 5, the tow 1 is always in a taut state during the process of entering the feeding roller 4 from the guide roller 5, thus ensuring that the tension of the tow 1 is constant during transmission.

[0022] Based on the above ideal embodiments according to the present application, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A drawing frame active feeding mechanism for hemp strips, comprising four side-by-side arranged hemp strip barrels (2) for placing hemp strips (1), a strip guide platform (3) arranged above the strip barrels (2), a feeding roller (4), and a power system, wherein the power system drives the feeding roller (4) to rotate, and is characterized by: Four guide wheels (5) corresponding to the four bar barrels (2) below are rotatably mounted on the guide bar platform (3). The power system includes a reduction motor (6). The power output end of the reduction motor (6) is transmission-connected to a primary gear set (7). The output end of the primary gear set (7) is transmission-connected to a secondary gear set (8). The driven gear of the secondary gear set (8) drives the feeding roller (4) to rotate through a gear transmission train (9). A driving sprocket (10) is coaxially mounted with the driving gear of the secondary gear set (8). Driven sprockets (11) are respectively mounted on the axles of the guide wheels (5). The driving sprocket (10) is transmission-connected to the driven sprocket (11) on the axle of the first guide wheel (5). The driven sprockets (11) between adjacent guide wheels (5) are transmission-connected.

2. The active feeding mechanism for the drawing frame according to claim 1, characterized in that: The feeding roller (4) comprises a front feeding roller (4-1) and a rear feeding roller (4-2). The flax strips (1) in the flax barrel (2) pass through the corresponding guide wheel (5) and then bypass the rear feeding roller (4-2) and the front feeding roller (4-1) in sequence to be fed into the subsequent drawing frame drafting mechanism.

3. The active feeding mechanism for the drawing frame according to claim 2, characterized in that: A supporting wheel (12) is provided at the front end of the strip guide platform (3), and the supporting wheel (12) supports the strips (1) led from the guide wheel (5) to the rear feeding roller (4-2).

4. The hemp strip active feeding mechanism for the drawing frame according to claim 1, characterized in that: The driven sprocket (11) comprises a double-row sprocket (11-1) and a single-row sprocket (11-2), wherein the double-row sprocket (11-1) is respectively mounted on the axles of the first three guide wheels (5), and the single-row sprocket (11-2) is mounted on the axle of the last fourth guide wheel (5).

Images