Drawing frame with adjustable tension

Abstract

The utility model belongs to the technical field of drawing frames, and particularly relates to a tension-adjustable drawing frame which comprises a machine frame and a bundling device body fixedly connected to the inner wall of the bottom of the machine frame, and two upper traction rollers and two lower traction rollers are rotationally connected to the inner walls of the front side and the rear side of the machine frame. Fiber strip traction assemblies are arranged between the two upper traction rollers and the rack and between the two lower traction rollers and the rack, and two guide rollers are rotationally connected to the inner walls of the front side and the rear side of the rack. The bundling device is reasonable in structural design, a plurality of fiber rods can be dragged and conveyed into the bundling device body to be subjected to drawing and plying operation through the arrangement of the upper traction roller and the lower traction roller, the fiber rods subjected to drawing and plying operation can be subjected to tensioning operation through the arrangement of the two guide rollers and the tensioning wheel, the height of the tensioning wheel can be accurately adjusted, and the tensioning effect is good. And therefore, the tension of the fiber rods after drawing and stranding can be accurately adjusted, the use effect is better, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing frames, in particular to a drawing frame with adjustable tension. Background Art

[0002] The drawing frame is a spinning machine that processes several carded or combed fiber strips into fiber strips with certain quality requirements. Drawing is an indispensable step in the spinning process, which has the tasks of combining, drawing and forming strips. It also undertakes the task of fully mixing fibers with different properties to prevent color differences. After drawing, the internal structure of the fiber strip can be improved, the uniformity of long segments can be increased, and the weight unevenness can be reduced. The fibers of the fiber strip can be straightened and parallel, and problems such as hooks can be reduced.

[0003] After searching: Chinese patent number CN209989521U is a tension-adjustable drawing frame, which belongs to the technical field of textile equipment, and specifically includes a feeding device, a drafting device, a bundling device and a strip-forming device installed in sequence, the bundling device includes a bundling box, the bundling box has a trapezoidal structure, the large diameter end of which is the fiber strip inlet, and the small diameter end is the fiber strip outlet, the bundling box is provided with guide grooves for separating the fiber strips, the number of the guide grooves is consistent with the number of feeding cans, and a guide column with a hollow structure is provided in the middle of the guide groove, and the guide column is connected to the inner wall of the guide groove through an elastic member.

[0004] However, the above-mentioned drawing frame still has some shortcomings when in use. Although the fiber strips can be tensioned during input, it is inconvenient to effectively adjust the tension of the fiber strips after drawing, and the effect of the fiber strips after plying cannot be guaranteed. Therefore, we propose a tension-adjustable drawing frame to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above-mentioned shortcomings and proposes a tension-adjustable drawing frame.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tension-adjustable drawing frame comprises a frame and a bundling device body fixedly connected to the inner wall of the bottom of the frame, two upper traction rollers and two lower traction rollers are rotatably connected to the front and rear inner walls of the frame, a fiber strip traction assembly is arranged between the two upper traction rollers, the two lower traction rollers and the frame, two guide rollers are rotatably connected to the front and rear inner walls of the frame, a tensioning wheel is arranged in the frame, and a tension adjustment assembly is arranged between the frame, the two guide rollers and the tensioning wheel.

[0008] Preferably, the fiber strip traction assembly includes a driving motor fixedly connected to the bottom inner wall of the frame and a driven sprocket fixedly connected to the front side of the lower traction roller, the output shaft of the driving motor is fixedly connected to a driving sprocket, the driving sprocket and the two driven sprockets are connected to each other by the same chain, and the upper traction roller cooperates with the lower traction roller.

[0009] Preferably, a fixing seat is fixedly connected to the bottom of the driving motor, and the fixing seat is fixedly connected to the bottom inner wall of the frame.

[0010] Preferably, a support plate is fixedly connected to the bottom of the bundling device body, and the support plate is fixedly connected to the bottom inner wall of the frame.

[0011] Preferably, the tension adjustment assembly includes a rotating shaft and a threaded cylinder rotatably connected to the top of the frame, the lower end of the rotating shaft is fixedly connected to a driving gear, the outer fixed sleeve of the threaded cylinder is provided with a driven gear, the driving gear is meshed with the driven gear, the inner threaded sleeve of the threaded cylinder is provided with a lifting screw rod, the lower end of the lifting screw rod is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a mounting frame, and the tensioning wheel is rotatably connected to the front and rear inner walls of the mounting frame.

[0012] Preferably, a through hole is opened on the top of the frame, a scale rod is slidably sleeved in the through hole, and the scale rod is fixedly connected to the top of the connecting plate.

[0013] Preferably, a bearing is fixedly connected to the top of the frame, and the threaded tube is fixedly sleeved in the inner ring of the bearing.

[0014] Preferably, the top end of the rotating shaft extends to the top of the frame and is fixedly connected to a hand wheel, and the top of the hand wheel is fixedly connected to a handle.

[0015] In the utility model, the tension-adjustable drawing machine described above drives the rotation of the driving sprocket by a driving motor, the driving sprocket drives the operation of the chain and two driven sprockets, and the two driven sprockets drive the synchronous rotation of two lower traction rollers. With the assistance of the upper traction roller, multiple fiber strips can be pulled and transported, and the multiple fiber strips are transported to the bundling device body, and then the multiple fiber strips can be drawn and stranded into one fiber strip. Through the arrangement of two guide rollers and a tensioning wheel, the drawn and stranded fiber strips can be tensioned.

[0016] In the utility model, the tension-adjustable drawing frame described in the utility model, when the tension needs to be adjusted, the rotating shaft and the driving gear are rotated by the hand wheel, and the driving gear drives the rotation of the driven gear and the threaded barrel. Under the guidance of the scale rod, the rotation of the threaded barrel drives the lifting screw rod, the connecting plate, the mounting frame and the tension wheel to move up or down, and then the tension is adjusted by adjusting the height of the tension wheel. The height of the tension wheel can be accurately adjusted through the scale line on the scale rod, and then the tension of the fiber strip after the drawing and plying can be accurately adjusted, so that the use effect is better;

[0017] The utility model has a reasonable structural design. Through the arrangement of two sets of upper and lower traction rollers, multiple fiber strips can be pulled and transported to the bundling device body for drawing and stranding operations. Through the arrangement of two guide rollers and a tensioning wheel, the fiber strips after drawing and stranding can be tensioned, and the height of the tensioning wheel can be accurately adjusted, thereby accurately adjusting the tension of the fiber strips after drawing and stranding, thereby achieving better use effect and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a tension-adjustable drawing frame proposed by the utility model;

[0019] Figure 2 It is a cross-sectional view of a tension-adjustable drawing frame proposed by the utility model;

[0020] Figure 3 This is a structural schematic diagram of part A of a tension-adjustable drawing frame proposed by the utility model;

[0021] Figure 4 The utility model is a schematic structural diagram of the B part of a tension-adjustable drawing frame.

[0022] In the figure: 1. frame; 2. guide roller; 3. rotating shaft; 4. hand wheel; 5. bearing; 6. lifting screw; 7. threaded cylinder; 8. scale rod; 9. bundling device body; 10. support plate; 11. driving motor; 12. driving sprocket; 13. chain; 14. driven sprocket; 15. lower traction roller; 16. upper traction roller; 17. driving gear; 18. driven gear; 19. connecting plate; 20. mounting frame; 21. tensioning wheel. DETAILED DESCRIPTION

[0023] 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 of the embodiments.

[0024] Reference Figure 1-4A tension-adjustable drawing frame includes a frame 1 and a bundling device body 9 fixedly connected to the inner wall at the bottom of the frame 1, two upper traction rollers 16 and two lower traction rollers 15 are rotatably connected to the front and rear inner walls of the frame 1, a fiber strip traction assembly is arranged between the two upper traction rollers 16, the two lower traction rollers 15 and the frame 1, two guide rollers 2 are rotatably connected to the front and rear inner walls of the frame 1, a tensioning wheel 21 is arranged in the frame 1, and a tension adjusting assembly is arranged between the frame 1, the two guide rollers 2 and the tensioning wheel 21.

[0025] In the utility model, the fiber strip traction assembly includes a driving motor 11 fixedly connected to the bottom inner wall of the frame 1 and a driven sprocket 14 fixedly connected to the front side of the lower traction roller 15, the output shaft of the driving motor 11 is fixedly connected to a driving sprocket 12, the driving sprocket 12 and the two driven sprockets 14 are transmission-connected with the same chain 13, the upper traction roller 16 cooperates with the lower traction roller 15, the driving motor 11 drives the driving sprocket 12 to rotate, the driving sprocket 12 drives the chain 13 and the two driven sprockets 14 to run, the two driven sprockets 14 drive the two lower traction rollers 15 to rotate synchronously, with the assistance of the upper traction roller 16, multiple fiber strips can be pulled and conveyed, the multiple fiber strips are conveyed to the bundling device body 9, and then the multiple fiber strips can be combined into one fiber strip.

[0026] In the utility model, the bottom of the driving motor 11 is fixedly connected with a fixing seat, and the fixing seat is fixedly connected to the bottom inner wall of the frame 1, so as to support and fix the driving motor 11, making it work more stably.

[0027] In the present invention, a support plate 10 is fixedly connected to the bottom of the clustering device body 9 , and the support plate 10 is fixedly connected to the bottom inner wall of the frame 1 , so as to stably support and fix the clustering device body 9 .

[0028] In the utility model, the tension adjustment component includes a rotating shaft 3 and a threaded barrel 7 rotatably connected to the top of the frame 1, the lower end of the rotating shaft 3 is fixedly connected with a driving gear 17, the outer fixed sleeve of the threaded barrel 7 is provided with a driven gear 18, the driving gear 17 is meshed with the driven gear 18, the inner thread sleeve of the threaded barrel 7 is provided with a lifting screw 6, the lower end of the lifting screw 6 is fixedly connected with a connecting plate 19, the bottom of the connecting plate 19 is fixedly connected with a mounting frame 20, and the tensioning wheel 21 is rotatably connected to the inner walls of the front and rear sides of the mounting frame 20. When it is necessary to adjust the tension, the rotating shaft 3 and the driving gear 17 are rotated by the hand wheel 4, and the driving gear 17 drives the rotation of the driven gear 18 and the threaded barrel 7. Under the guidance of the scale rod 8, the rotation of the threaded barrel 7 drives the lifting screw 6, the connecting plate 19, the mounting frame 20 and the tensioning wheel 21 to move up or down, and then the height of the tensioning wheel 21 is adjusted to achieve the adjustment of the tension.

[0029] In the utility model, a through hole is opened on the top of the frame 1, and a scale rod 8 is slidably sleeved in the through hole. The scale rod 8 is fixedly connected to the top of the connecting plate 19, and can guide the connecting plate 19 to make its movement more stable and smooth. At the same time, the height of the tensioning wheel 21 can be accurately adjusted through the scale lines on the scale rod 8, and then the tension of the fiber strips after the drawing and plying can be accurately adjusted.

[0030] In the utility model, the top of the frame 1 is fixedly connected with a bearing 5, and the threaded cylinder 7 is fixedly sleeved in the inner ring of the bearing 5, which can support the threaded cylinder 7 and make its rotation more stable.

[0031] In the utility model, the top end of the rotating shaft 3 extends to the upper side of the frame 1 and is fixedly connected to a hand wheel 4 , and the top of the hand wheel 4 is fixedly connected to a handle for conveniently rotating the rotating shaft 3 .

[0032] In the utility model, when in use, the driving motor 11 drives the rotation of the active sprocket 12, the active sprocket 12 drives the operation of the chain 13 and the two driven sprockets 14, and the two driven sprockets 14 drive the synchronous rotation of the two lower traction rollers 15. With the assistance of the upper traction roller 16, multiple fiber strips can be pulled and transported, and the multiple fiber strips are transported to the bundling device body 9 (described in detail in a tension-adjustable drawing machine of patent number CN209989521U, and there is no excessive description in this article), and then the multiple fiber strips can be drawn and stranded into one fiber strip, and the two guide rollers 2 and the tensioning wheel 21 can be set. The fiber strips after being drawn and twisted are tensioned. When the tension needs to be adjusted, the rotating shaft 3 and the driving gear 17 are rotated by the hand wheel 4, and the driving gear 17 drives the rotation of the driven gear 18 and the threaded cylinder 7. Under the guidance of the scale rod 8, the rotation of the threaded cylinder 7 drives the lifting screw 6, the connecting plate 19, the mounting frame 20 and the tensioning wheel 21 to move up or down, and then the height of the tensioning wheel 21 is adjusted to achieve the adjustment of the tension. The height of the tensioning wheel 21 can be accurately adjusted through the scale lines on the scale rod 8, and then the tension of the fiber strips after being drawn and twisted can be accurately adjusted, so that the use effect is better.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tension-adjustable drawing frame, characterized in that: The invention comprises a frame (1) and a bundling device body (9) fixedly connected to the inner wall at the bottom of the frame (1); two upper traction rollers (16) and two lower traction rollers (15) are rotatably connected to the inner walls at the front and rear sides of the frame (1); a fiber strip traction assembly is arranged between the two upper traction rollers (16), the two lower traction rollers (15) and the frame (1); two guide rollers (2) are rotatably connected to the inner walls at the front and rear sides of the frame (1); a tensioning wheel (21) is arranged in the frame (1); and a tension adjustment assembly is arranged between the frame (1), the two guide rollers (2) and the tensioning wheel (21).

2. A tension-adjustable drawing frame according to claim 1, characterized in that: The fiber strip traction assembly includes a driving motor (11) fixedly connected to the inner wall of the bottom of the frame (1) and a driven sprocket (14) fixedly connected to the front side of the lower traction roller (15); a driving sprocket (12) is fixedly connected to the output shaft of the driving motor (11); the driving sprocket (12) and the two driven sprockets (14) are transmission-connected by the same chain (13); the upper traction roller (16) cooperates with the lower traction roller (15).

3. A tension-adjustable drawing frame according to claim 2, characterized in that: The bottom of the driving motor (11) is fixedly connected to a fixing seat, and the fixing seat is fixedly connected to the bottom inner wall of the frame (1).

4. The tension-adjustable drawing frame according to claim 1, characterized in that: A support plate (10) is fixedly connected to the bottom of the clustering device body (9), and the support plate (10) is fixedly connected to the bottom inner wall of the frame (1).

5. The tension-adjustable drawing frame according to claim 1, characterized in that: The tension adjustment assembly comprises a rotating shaft (3) and a threaded barrel (7) rotatably connected to the top of the frame (1); the lower end of the rotating shaft (3) is fixedly connected to a driving gear (17); the outer side of the threaded barrel (7) is fixedly sleeved with a driven gear (18); the driving gear (17) is meshed with the driven gear (18); the inner thread of the threaded barrel (7) is sleeved with a lifting screw (6); the lower end of the lifting screw (6) is fixedly connected to a connecting plate (19); the bottom of the connecting plate (19) is fixedly connected to a mounting frame (20); and the tension wheel (21) is rotatably connected to the front and rear inner walls of the mounting frame (20).

6. The tension-adjustable drawing frame according to claim 5, characterized in that: A through hole is provided on the top of the frame (1), a scale rod (8) is slidably sleeved in the through hole, and the scale rod (8) is fixedly connected to the top of the connecting plate (19).

7. The tension-adjustable drawing frame according to claim 5, characterized in that: A bearing (5) is fixedly connected to the top of the frame (1), and the threaded cylinder (7) is fixedly sleeved in the inner ring of the bearing (5).

8. The tension-adjustable drawing frame according to claim 5, characterized in that: The top end of the rotating shaft (3) extends to the top of the frame (1) and is fixedly connected to a hand wheel (4), and the top of the hand wheel (4) is fixedly connected to a handle.

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