Drawing frame capable of automatically adjusting tension

Abstract

The utility model discloses a drawing frame capable of automatically adjusting tension, which comprises a fixing frame, two mounting grooves are formed in the fixing frame, an adjusting rotating rod is rotatably mounted in each mounting groove, an adjusting shaft is rotatably mounted on one side surfaces, close to each other, of the two adjusting rotating rods, and two motors A are mounted on the outer surface of the fixing frame; the adjusting rotating rod is driven by the motor A to rotate, then the two adjusting shafts are driven to move upwards and downwards respectively, a fiber rod is pressed downwards through the adjusting shaft at one end, and the fiber rod is pressed upwards through the adjusting shaft at the other end, so that the tension of the fiber rod can be accurately controlled; the two-way adjusting mechanism ensures the stability and uniformity of the fiber rod in the drafting process, and through accurate tension adjustment, the internal structure of the fiber rod can be improved, the uniformity of long segments of the fiber rod can be improved, the weight unevenness can be reduced, fibers in the fiber rod can be straightened and parallel, hooks are reduced, and the fineness is ensured to meet the specification.

Description

Technical Field

[0001] This utility model relates to the field of drawing frame technology, specifically a drawing frame with automatic tension adjustment. Background Technology

[0002] The function of a drawing frame is to improve the internal structure of the sliver, thereby increasing its long-segment uniformity, reducing weight unevenness, straightening and parallelizing the fibers in the sliver, reducing hooks, ensuring the fineness meets specifications, and uniformly mixing different types or qualities of raw materials to achieve the specified blending ratio. Drawing frames are broadly classified into roller drawing frames and carding frames based on their drafting mechanism. Traditional drawing frames have certain limitations in operation, especially in adjusting the tension of the fiber sliver. Due to the design and structural characteristics of the drawing frame, it is difficult for operators to precisely control the tension of the fiber sliver to meet the needs of different fiber slivers. This limitation not only affects production efficiency but may also lead to unstable product quality. Therefore, we provide a drawing frame with automatic tension adjustment to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a drawing frame with automatic tension adjustment to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tension-adjustable drawing frame, comprising a fixed frame, wherein two mounting slots are provided inside the fixed frame, and an adjusting rod is rotatably mounted inside each mounting slot. An adjusting shaft is rotatably mounted on one side of the two adjusting rods that are close to each other. Two motors A are mounted on the outer surface of the fixed frame, and the output end of each motor A passes through and extends into the interior of the mounting slot. The output end of each motor A is connected to the outer surface of the adjusting rod.

[0005] The fixed frame has two traction slots on its outer surface and two electric lifting rods installed inside the fixed frame. Each electric lifting rod has a lifting frame installed at its output end.

[0006] Each of the lifting frames has a lifting shaft rotatably installed inside, the fixed frame has two traction shafts rotatably installed inside, and the outer surface of the fixed frame is equipped with a connecting frame.

[0007] The connecting frame has a threaded rod rotatably mounted inside, a movable block is threadedly connected to the outer surface of the threaded rod, and a connecting rod is fixed to the outer surface of the movable block.

[0008] The connecting rod has an actuating ring mounted on its outer surface, which is slidably mounted on the outer surface of the traction shaft. The fixed frame has a motor B mounted on its outer surface, and the output end of the motor B passes through the fixed frame and is connected to the front end of the threaded rod.

[0009] The base of the fixed frame has four dampers fixed to it, and the bottom ends of the four dampers are connected to the mounting frame. Each damper has a shock-absorbing spring fitted on its outer surface. The top end of each shock-absorbing spring is connected to the bottom surface of the fixed frame, and the bottom end of each shock-absorbing spring is connected to the outer surface of the mounting frame. Through the combined use of the shock-absorbing springs and dampers, vibration and impact during use can be absorbed and reduced, ensuring subsequent stability.

[0010] The mounting bracket has four fixing blocks installed on its outer surface. Each fixing block has a screw threaded onto its outer surface. The use of the mounting bracket, fixing blocks, and screws makes the installation and disassembly of the device convenient and quick, improving the maintenance efficiency and flexibility of the equipment.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention uses motor A to drive the adjusting rod to rotate, which in turn drives two adjusting shafts to move upward and downward respectively. By pressing the fiber strip downward with the adjusting shaft at one end and pressing the fiber strip upward with the adjusting shaft at the other end, the tension of the fiber strip can be precisely controlled. This bidirectional adjustment mechanism ensures the stability and uniformity of the fiber strip during the stretching process. Through precise tension adjustment, the internal structure of the fiber strip can be improved, its long segment uniformity can be increased, the weight unevenness can be reduced, the fibers in the fiber strip can be straightened and parallel, hooks can be reduced, and the fineness can be ensured to meet the requirements. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a drawing frame with automatic tension adjustment according to the present invention;

[0014] Figure 2 This is a side view of a drawing frame with automatic tension adjustment according to the present invention;

[0015] Figure 3 This is a schematic diagram of the internal structure of a drawing frame with automatic tension adjustment according to the present invention;

[0016] Figure 4 This utility model relates to a drawing frame with automatic tension adjustment. Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the picture:

[0018] 1. Mounting bracket; 2. Fixing block; 3. Mounting screw; 4. Damper; 5. Shock-absorbing spring; 6. Fixing bracket; 7. Traction slot; 8. Traction shaft; 9. Electric lifting rod; 10. Lifting frame; 11. Lifting shaft; 12. Mounting slot; 13. Adjusting rod; 14. Adjusting shaft; 15. Motor A; 16. Connecting bracket; 17. Threaded rod; 18. Moving block; 19. Motor B; 20. Connecting rod; 21. Actuating ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a tension-adjustable drawing frame, including a fixed frame 6, with two mounting slots 12 inside the fixed frame 6. An adjusting rod 13 is rotatably mounted inside each mounting slot 12. An adjusting shaft 14 is rotatably mounted on one side of the two adjusting rods 13 that are close to each other. Two motors A15 are mounted on the outer surface of the fixed frame 6. The output end of each motor A15 passes through and extends into the interior of the mounting slot 12. The output end of each motor A15 is connected to the outer surface of the adjusting rod 13.

[0021] The outer surface of the fixed frame 6 has two traction slots 7, and the interior of the fixed frame 6 is equipped with two electric lifting rods 9. Each electric lifting rod 9 has a lifting frame 10 installed at its output end.

[0022] Each lifting frame 10 has a lifting shaft 11 rotatably installed inside, and two traction shafts 8 are rotatably installed inside the fixed frame 6. A connecting frame 16 is installed on the outer surface of the fixed frame 6. The lifting frame 10 and the lifting shaft 11 are moved up and down by the electric lifting rod 9. In this way, the working height of the lifting shaft 11 can be adjusted according to the specifications of the fiber strip to adapt to fiber strips of different thicknesses.

[0023] The connecting frame 16 has a threaded rod 17 rotatably mounted inside, and a movable block 18 is threadedly connected to the outer surface of the threaded rod 17. A connecting rod 20 is fixed to the outer surface of the movable block 18.

[0024] The connecting rod 20 has an actuating ring 21 mounted on its outer surface. The actuating ring 21 is slidably mounted on the outer surface of the traction shaft 8. The fixed frame 6 has a motor B19 mounted on its outer surface. The output end of the motor B19 passes through the fixed frame 6 and is connected to the front end of the threaded rod 17. The motor B19 drives the threaded rod 17 to rotate, which in turn drives the moving block 18, the connecting rod 20 and the actuating ring 21 to move back and forth on the surface of the traction shaft 8. This can actuate the fiber strips between the traction shaft 8 and the lifting shaft 11, making them neatly closed. This ensures that the fiber strips remain neat and uniform during the stretching process, thereby improving product quality.

[0025] The base of the fixed frame 6 is fixed with four dampers 4, and the base of the four dampers 4 is mounted on the mounting frame 1. Each damper 4 has a shock-absorbing spring 5 on its outer surface. The top of each shock-absorbing spring 5 is connected to the base of the fixed frame 6, and the bottom of each shock-absorbing spring 5 is connected to the outer surface of the mounting frame 1. Through the combined use of the shock-absorbing spring 5 and the dampers 4, vibration and impact can be reduced during the stretching and adjustment of the fiber strip tension, thereby improving the stability and safety of the operation.

[0026] The mounting bracket 1 has four fixing blocks 2 installed on its outer surface, and each fixing block 2 has a screw 3 threadedly connected to its outer surface.

[0027] Working principle: In use, the fiber strip is first passed through the traction slot 7, then through the gap between the two sets of lifting shafts 11 and the traction shaft 8, and then through the two adjusting shafts 14. The electric lifting rod 9 is started to drive the lifting frame 10 and the lifting shaft 11 to move up and down. This allows the working height of the lifting shaft 11 to be adjusted according to the specifications of the fiber strip to accommodate fiber strips of different thicknesses. Next, the motor B19 is started to drive the threaded rod 17 to rotate, which in turn drives the moving block 18, the connecting rod 20 and the actuating ring 21 to move back and forth on the surface of the traction shaft 8, which can agitate the fiber strip between the traction shaft 8 and the lifting shaft 11 to make it close neatly. Then, the motor A15 is started to drive the adjusting rod 13 to rotate, which in turn drives the two adjusting shafts 14 to move up and down respectively. During this process, one end of the adjusting shaft 14 presses down on the fiber strip, and the other end of the adjusting shaft 14 presses up on the fiber strip. By squeezing the fiber strip in this way, its tension is adjusted, thereby improving production efficiency and product quality.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drawing frame with automatic tension adjustment, comprising a fixing frame (6), characterized in that: The fixing frame (6) has two mounting slots (12) inside. An adjusting rod (13) is rotatably mounted inside each mounting slot (12). An adjusting shaft (14) is rotatably mounted on one side of the two adjusting rods (13) that are close to each other. Two motors A (15) are mounted on the outer surface of the fixing frame (6). The output end of each motor A (15) passes through and extends into the interior of the mounting slot (12). The output end of each motor A (15) is connected to the outer surface of the adjusting rod (13).

2. The automatic tension-adjustable drawing frame according to claim 1, characterized in that: The outer surface of the fixed frame (6) has two traction slots (7), and the interior of the fixed frame (6) is equipped with two electric lifting rods (9), and the output end of each electric lifting rod (9) is equipped with a lifting frame (10).

3. A drawing frame with automatic tension adjustment according to claim 2, characterized in that: Each of the lifting frames (10) has a lifting shaft (11) rotatably installed inside, and two traction shafts (8) are rotatably installed inside the fixed frame (6). A connecting frame (16) is installed on the outer surface of the fixed frame (6).

4. A drawing frame with automatic tension adjustment according to claim 3, characterized in that: The connecting frame (16) is rotatably mounted with a threaded rod (17), and a moving block (18) is threadedly connected to the outer surface of the threaded rod (17). A connecting rod (20) is fixed to the outer surface of the moving block (18).

5. A drawing frame with automatic tension adjustment according to claim 4, characterized in that: A toggle ring (21) is installed on the outer surface of the connecting rod (20). The toggle ring (21) is slidably installed on the outer surface of the traction shaft (8). A motor B (19) is installed on the outer surface of the fixing frame (6). The output end of the motor B (19) passes through the fixing frame (6) and is connected to the front end of the threaded rod (17).

6. A drawing frame with automatic tension adjustment according to claim 1, characterized in that: Four dampers (4) are fixed on the bottom surface of the fixed frame (6). The bottom ends of the four dampers (4) are jointly mounted on the mounting frame (1). Each damper (4) is fitted with a shock-absorbing spring (5) on its outer surface. The top end of each shock-absorbing spring (5) is connected to the bottom surface of the fixed frame (6), and the bottom end of each shock-absorbing spring (5) is connected to the outer surface of the mounting frame (1).

7. A drawing frame with automatic tension adjustment according to claim 6, characterized in that: The outer surface of the mounting bracket (1) is equipped with four fixing blocks (2), and each fixing block (2) has a mounting screw (3) threadedly connected to its outer surface.

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