Drawing mechanism of drawing frame

Abstract

The utility model discloses a drawing frame drafting mechanism which comprises a front drafting area, the front drafting area is composed of a third roller and a third rubber covered roller, the third roller and the third rubber covered roller are tangent, the two ends of the third roller and the third rubber covered roller penetrate through and are rotationally assembled in a limiting block, and the two ends of the third roller penetrate through and are rotationally installed in a lifting block. One end of the third rubber roller is connected with a third motor, the bottom of the third rubber roller is matched with an adsorption mechanism, limiting blocks are slidably assembled in a limiting frame, lifting blocks are assembled on lifting screws in a threaded mode, the left end and the right end of the adsorption mechanism are fixedly connected with the limiting frame, and the upper end and the lower end of each lifting screw are rotationally assembled on a positioning block. A conveying belt is connected between the two lifting screws in a friction transmission mode, the end of one lifting rod is connected with a fourth motor, the positioning blocks are fixedly connected to a limiting frame, a middle drafting area is assembled in the middle of the limiting frame, and a front drafting area is assembled at the tail of the limiting frame.

Description

Technical Field

[0001] The utility model relates to the technical field of textile equipment, in particular to a drawing frame drafting mechanism. Background Art

[0002] In the field of textile machinery, the draw frame is a key equipment, which is mainly used to process cotton, wool, linen, chemical fiber and other fibers to improve the straightening parallelism, mixing uniformity and internal structure of the fibers. Among them, the drafting mechanism is the core part of the draw frame, and its performance directly affects the product quality and production efficiency.

[0003] Drawing can make the yarn longer and thinner, making the weight per unit length lighter, and causing relative displacement of fibers in the axial direction of the yarn, so that the fibers are distributed over a longer length. Drawing can improve the straightening, parallelism and separation of the fibers, making the various fibers evenly mixed, thereby improving the uniformity of the long segments of the yarn and reducing the weight unevenness.

[0004] The drafting mechanism of a traditional drawing frame usually consists of three parts, namely the front drafting zone, the middle drafting zone and the rear drafting zone. The drafting is formed by the tension between the front drafting zone and the rear drafting zone. The drafting zone is mainly formed by the combination of rollers and rubber rollers, and the friction between the rollers and the rubber rollers is used to draft the fibers. However, as the length of the processed fiber increases, the friction coefficient between the rollers and the rubber rollers will also change, affecting the stability of the drafting force. In addition, since impurities such as short fluff are easily adhered to the surface of the rubber roller, the fiber is subjected to additional resistance during the drafting process, which not only affects the product quality, but also increases the maintenance cost of the equipment. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a drawing frame drafting mechanism to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drawing frame drafting mechanism, comprising a front drafting zone, the front drafting zone is composed of a third roller and a third rubber roller, the third roller is tangent to the third rubber roller, both ends of the two are penetrated and rotatably assembled in the limit block, both ends of the third roller are penetrated and rotatably installed in the lifting block, and one end is connected with a third motor, the bottom of the third rubber roller and the adsorption mechanism fit each other, the limit blocks are slidably assembled in the limit frame, the lifting blocks are threadedly assembled on the lifting screw, the left and right ends of the adsorption mechanism are fixed to the limit frame, the upper and lower ends of the lifting screw are rotatably assembled on the positioning block, and penetrate the positioning block at the lower end, a conveyor belt is frictionally connected between the two lifting screws, and one end of the lifting rod is connected to the fourth motor, the positioning blocks are fixed to the limit frame, the middle of the limit frame is equipped with a middle drafting zone, the tail is equipped with a front drafting zone, and both sides of the bottom of the limit frame are fixed with support columns.

[0009] Preferably, the adsorption mechanism is composed of a suction fan and a U-shaped frame, the suction fan is connected to the side wall of the U-shaped frame, and both left and right ends of the U-shaped frame are fixedly connected to the limiting frame.

[0010] Preferably, the middle stretching zone and the rear stretching zone are equipped with pressure rollers, the left and right ends of the pressure rollers penetrate and are rotatably installed on the sleeve rod, the sleeve rod is slidably installed in a slide groove that matches the size of the sleeve rod and is opened on the limit frame, and a spring is fixed at the bottom, and the other end of the spring is fixed in the slide groove of the limit frame.

[0011] Preferably, the middle stretching zone is composed of a second roller, a second rubber roller, a second gear and a second motor. The second roller and the second rubber roller are both penetrated and rotatably assembled on the limit frame, and a second gear is fixedly connected to one end portion. The second gears are meshed and connected with each other, and the second gear on the second roller is connected to the output end of the second motor.

[0012] Preferably, the rear stretching zone is composed of a first roller, a first rubber roller, a first gear and a first motor. The first roller and the first rubber roller are both penetrated and rotatably assembled on a limit frame, and one end portion is fixedly connected with a first gear. The first gears are meshed and connected with each other. The first gear on the first roller is connected to the output end of the first motor, and the rotation speed of the first motor is greater than that of the second motor.

[0013] Preferably, the limiting frame is provided with a long strip through slot in the vertical direction, and the end of the third roller and the third motor are mounted in the through slot.

[0014] Preferably, a slide groove with a T-shaped cross section is provided in the limit block, and the tails of the third roller and the third rubber roller are correspondingly designed to be in a T-shape that matches the T-shape.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a drawing frame drafting mechanism, which has the following beneficial effects:

[0017] The utility model arranges a lifting screw to drive the third roller to rise and fall, so as to adjust the friction between the third roller and the third rubber roller, so that the friction coefficient between the third roller and the third rubber roller can be timely adjusted according to different fiber lengths, thereby ensuring the quality of fiber drafting, and through the fit between the third rubber roller and the adsorption mechanism, the floating hair on the surface of the third rubber roller can be scraped out, so as to achieve the cleaning of the third rubber roller. At the same time, the third roller can be adjusted up and down, so as to facilitate more detailed cleaning of the mechanism, and will not affect the subsequent fiber drafting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the front drafting area and its related structures of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the drafting area, the post-drafting area and related structures in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the adsorption structure of the utility model;

[0022] In the figure: 1. front stretching area; 2. third roller; 3. third rubber roller; 4. third motor; 5. limit block; 6. limit frame; 7. lifting block; 8. lifting screw; 9. positioning block; 10. fourth motor; 11. conveyor belt; 12. adsorption mechanism; 13. middle stretching area; 14. second roller; 15. second rubber roller; 16. second gear; 17. second motor; 18. pressure roller; 19. sleeve rod; 20. spring; 21. rear stretching area; 22. first roller; 23. first rubber roller; 24. first gear; 25. first motor; 26. support column; 27. suction fan; 28. U-shaped frame. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution for a drawing frame drafting mechanism:

[0025] according to Figure 1-4 As shown, a drawing frame drafting mechanism includes a front drafting zone 1, which is composed of a third roller 2 and a third rubber roller 3. The third roller 2 is tangent to the third rubber roller 3, and both ends of the third roller 2 are penetrated and rotatably mounted in a limit block 5. Both ends of the third roller 2 are penetrated and rotatably mounted in a lifting block 7, and one end is connected to a third motor 4. The bottom of the third rubber roller 3 is fitted with an adsorption mechanism 12. The limit blocks 5 are slidably mounted in the limit frame 6, and the lifting blocks 7 are threadedly mounted on the lifting frame. On the lowering screw 8, the left and right ends of the adsorption mechanism 12 are fixedly connected to the limit frame 6, the upper and lower ends of the lifting screw 8 are rotatably assembled on the positioning block 9, and pass through the positioning block 9 at the lower end, and the two lifting screws 8 are frictionally connected with a conveyor belt 11, and the end of one of the lifting rods is connected to a fourth motor 10, and the positioning blocks 9 are fixedly connected to the limit frame 6, the middle of the limit frame 6 is equipped with a middle stretching area 13, and the tail is equipped with a front stretching area 1, and both sides of the bottom of the limit frame 6 are fixedly connected to support columns 26.

[0026] The adsorption mechanism 12 is composed of a suction fan 27 and a U-shaped frame 28. The suction fan 27 is connected to the side wall of the U-shaped frame 28. The left and right ends of the U-shaped frame 28 are fixedly connected to the limit frame 6, which is convenient for adsorbing the fiber cotton generated during the stretching process and creating a more favorable working environment.

[0027] A pressure roller 18 is installed between the middle stretching zone 13 and the rear stretching zone 21. The left and right ends of the pressure roller 18 pass through and are rotatably installed on the sleeve rod 19. The sleeve rod 19 is slidably installed in a slide groove that matches the size of the sleeve rod 19 and is opened on the limit frame 6. A spring 20 is fixedly connected to the bottom, and the other end of the spring 20 is fixedly connected to the slide groove of the limit frame 6. The spring 20 always pushes the pressure roller 18 upward to ensure that the cotton fibers are always pushed with the greatest force, so that the fibers are stretched more thoroughly.

[0028] The middle stretching zone 13 is composed of a second roller 14, a second rubber roller 15, a second gear 16 and a second motor 17. The second roller 14 and the second rubber roller 15 are both penetrated and rotatably assembled on the limit frame 6, and a second gear 16 is fixedly connected to one end of each side. The second gears 16 are meshed and connected with each other, and the second gear 16 on the second roller 14 is connected to the output end of the second motor 17.

[0029] The rear stretching zone 21 is composed of a first roller 22, a first rubber roller 23, a first gear 24 and a first motor 25. The first roller 22 and the first rubber roller 23 are both penetrated and rotatably assembled on the limit frame 6, and the first gear 24 is fixedly connected to one end of each side. The first gears 24 are meshed and connected with each other. The first gear 24 on the first roller 22 is connected to the output end of the first motor 25. The rotation speed of the first motor 25 is greater than that of the second motor 17, so that a stretching force can be formed between the rear stretching zone and the middle stretching zone.

[0030] The limiting frame 6 is provided with a long strip through slot in the vertical direction, and the end portions of the third roller 2 and the third motor 4 are mounted in the through slot.

[0031] A slide groove with a T-shaped cross-section is provided in the limit block 5, and the tails of the third roller 2 and the third rubber roller 3 are correspondingly designed to be in a T-shape that matches the limit block 5, so that the third roller 2 and the third rubber roller 3 can be driven by the limit block 5 to slide together, and will not separate from the rotating block 5 due to their own rotation.

[0032] During specific use, the fourth motor 10 drives the lifting screw 8 to rotate, realizes the up and down movement of the lifting block 7, and then drives the third roller 2 to move up and down in the limit frame 6. When the appropriate friction force is adjusted according to the fiber, the third motor 4 is started, the third roller 2 is rotated, and a stretching force is generated through the third rubber roller 3. When the fiber is transmitted to between the second roller 14 and the second rubber roller 15, the fiber begins to be stretched. At the same time, the third rubber roller 3 is also driven to rotate. The floating hair stuck on its surface is tangent to the adsorption mechanism 12, and the floating hair continues to accumulate until it is scraped out of the adsorption mechanism 12. The fiber passes through the middle stretching area 13, passes through the upper cut surface of the pressure roller 18, and then passes through between the first rubber roller 23 and the first roller 22 until the fiber undergoes the next stretching operation.

[0033] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A drawing frame drafting mechanism, comprising a front drafting zone (1), characterized in that: The front drafting zone (1) is composed of a third roller (2) and a third rubber roller (3). The third roller (2) and the third rubber roller (3) are tangent to each other. Both ends of the third roller (2) are penetrated and rotatably mounted in a limit block (5). Both ends of the third roller (2) are penetrated and rotatably mounted in a lifting block (7), and one end is connected to a third motor (4). The bottom of the third rubber roller (3) is mutually matched with an adsorption mechanism (12). The limit blocks (5) are slidably mounted in the limit frames (6). The lifting blocks (7) are threadedly mounted on the lifting screw (8). The left and right ends of the mechanism (12) are fixedly connected to the limit frame (6); the upper and lower ends of the lifting screw (8) are rotatably assembled on the positioning block (9) and pass through the positioning block (9) at the lower end; a conveyor belt (11) is frictionally connected between the two lifting screws (8), and a fourth motor (10) is connected to the end of one of the lifting rods; the positioning blocks (9) are fixedly connected to the limit frame (6); a middle stretching area (13) is assembled in the middle of the limit frame (6), and a front stretching area (1) is assembled at the tail; and support columns (26) are fixedly connected to both sides of the bottom of the limit frame (6).

2. A drawing frame drafting mechanism according to claim 1, characterized in that: The adsorption mechanism (12) is composed of a suction fan (27) and a U-shaped frame (28); the suction fan (27) is connected to the side wall of the U-shaped frame (28); and both left and right ends of the U-shaped frame (28) are fixedly connected to the limiting frame (6).

3. The drawing frame drafting mechanism according to claim 1, characterized in that: A pressure roller (18) is installed between the middle stretching zone (13) and the rear stretching zone (21). The left and right ends of the pressure roller (18) pass through and are rotatably installed on a sleeve rod (19). The sleeve rod (19) is slidably installed in a slide groove that matches the size of the sleeve rod (19) and is opened on the limit frame (6). A spring (20) is fixed at the bottom, and the other end of the spring (20) is fixed in the slide groove of the limit frame (6).

4. The drawing frame drafting mechanism according to claim 1, characterized in that: The middle drafting zone (13) is composed of a second roller (14), a second rubber roller (15), a second gear (16) and a second motor (17). The second roller (14) and the second rubber roller (15) are both penetrated and rotatably assembled on the limit frame (6), and one end portion is fixedly connected with a second gear (16). The second gears (16) are meshed and connected with each other. The second gear (16) on the second roller (14) is connected to the output end of the second motor (17).

5. The drawing frame drafting mechanism according to claim 1, characterized in that: The rear stretching zone (21) is composed of a first roller (22), a first rubber roller (23), a first gear (24) and a first motor (25). The first roller (22) and the first rubber roller (23) are both penetrated and rotatably assembled on a limit frame (6), and one end portion is fixedly connected with a first gear (24). The first gears (24) are meshed and connected with each other. The first gear (24) on the first roller (22) is connected to the output end of the first motor (25), and the rotation speed of the first motor (25) is greater than that of the second motor (17).

6. The drawing frame drafting mechanism according to claim 1, characterized in that: The limiting frame (6) is provided with a long strip through slot in the vertical direction, and the ends of the third roller (2) and the third motor (4) are mounted in the through slot.

7. The drawing frame drafting mechanism according to claim 1, characterized in that: The limit block (5) is provided with a slide groove with a T-shaped cross section, and the tails of the third roller (2) and the third rubber roller (3) are correspondingly designed to be in a T-shape that matches the T-shape.

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