Aramid yarn two-for-one twisting mechanism with automatic yarn clamping function

Abstract

The utility model discloses an aramid fiber yarn two-for-one twisting mechanism with an automatic yarn clamping function, which belongs to the field of aramid fiber yarn two-for-one twisting mechanisms, and comprises a rack and an arranged automatic yarn clamping mechanism, when equipment breaks down to cause the springback phenomenon of yarns, an air cylinder drives an output end to drive an extrusion block to move backwards, and the automatic yarn clamping mechanism is used for clamping the yarns. The extrusion blocks no longer extrude the pressed blocks in the two side directions, after the compression springs on the fixing rods conduct stretching recovery operation, the connecting plates are pushed in the opposite directions, the connecting plates move along the fixing rods through the connecting holes in the side walls, and at the moment, the symmetrical wire clamping plates conduct synchronous relative movement operation and are matched with the wire clamping grooves formed in the opposite face walls, so that the wire clamping plates can be fixed. The yarn penetrating through the yarn guide holes formed in the top faces of the yarn guide plates which are symmetrical up and down is automatically clamped under the elastic acting force, so that the problem that the yarn rebounds is solved, and the aramid yarn two-for-one twisting mechanism has the automatic yarn clamping function.

Description

Technical Field

[0001] This utility model relates to the field of aramid yarn twisting mechanism, and in particular to an aramid yarn twisting mechanism with automatic yarn clamping function. Background Technology

[0002] Aramid yarn doubling mechanism is a device specifically designed to twist aramid yarns; essentially, it's a doubling machine (combining multiple strands into one). This mechanism uses a series of mechanical components and an electronic control system, such as a power unit (including an electric motor and electrical control box), a doubling unit (including a spindle braking device, the doubling machine spindle section, and a yarn winding device), and a transmission system, to twist and bond two or more aramid single yarns into a single strand, thus enhancing the performance of the original yarn. During the twisting process, the yarn undergoes two twists within the hollow spindle and between the yarn guide hook, achieving two twists in one rotation, significantly improving twisting efficiency and quality. This doubling mechanism is particularly suitable for processing high-strength, high-performance fibers such as aramid yarns, meeting the textile industry's demand for high-quality yarns.

[0003] In existing technologies, during the twisting process of yarn, due to the internal stress generated by twisting and the elasticity of the yarn itself, equipment malfunctions, such as unstable spindle speed, uneven winding tension, or a failure of the winding device. This causes uneven tension to generate internal stress in the yarn, resulting in yarn springback after subsequent processing or machine shutdown. However, during the yarn springback process, the lack of automatic yarn clamping measures on the aramid yarn twisting mechanism leads to unstable yarn tension when the yarn is twisted again, affecting the smooth progress of subsequent processing. This results in uneven twist during yarn twisting, making it difficult to effectively twist the yarn and thus reducing the quality of the twisted yarn. Utility Model Content

[0004] The main purpose of this invention is to provide an aramid yarn twisting mechanism with automatic yarn clamping function, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An aramid yarn twisting mechanism with automatic yarn clamping function includes a frame. An automatic yarn clamping mechanism is provided on the top of the frame. The automatic yarn clamping mechanism includes a transverse plate, an L-shaped plate, a cylinder, a pressing block, a fixing rod, a compression spring, a clamping plate, a connecting plate, and a pressure block. The transverse plate is fixedly connected between symmetrical support plates on the top of the frame. The cylinder is fixedly connected to the rear end of the L-shaped plate on the rear wall of the transverse plate, and a pressing block is fixedly connected to the output end of the cylinder. A set of symmetrical compression springs is respectively fitted on the outside of the symmetrical fixing rods on the front wall of the transverse plate, and a connecting plate is fixedly connected to the opposite ends of the symmetrical compression springs. The clamping plate and the pressure block are fixedly connected to the front and rear ends of the connecting plate, respectively.

[0007] Preferably, a drive motor is fixedly connected to the bottom surface of the frame, and a spindle seat is fixedly connected to the output end of the drive motor. A twisting disc is fixedly connected to the top surface of the spindle seat, and a hollow spindle is fixedly connected to the top surface of the twisting disc. A yarn outlet channel communicating with the hollow spindle is opened on the outer wall of the twisting disc, and a yarn outer cylinder is fixedly connected to the outer wall of the hollow spindle. A set of left-right symmetrical support plates is fixedly installed on the top surface of the frame, and a transverse plate is fixedly installed above the left-right symmetrical support plates. A set of upper-lower symmetrical guide plates is fixedly installed on the front wall of the transverse plate, and a through guide hole is opened on the guide plate.

[0008] Preferably, the transverse plate has a transverse opening.

[0009] Preferably, an L-shaped plate is fixedly installed at the bottom of the rear wall of the transverse plate, and a sliding opening is provided on the transverse part of the L-shaped plate.

[0010] Preferably, the cylinder is fixedly installed on the rear wall of the vertical part of the L-shaped plate, and an isosceles trapezoidal extrusion block is fixedly installed on the output end of the cylinder. A slider is fixedly installed on the bottom surface of the extrusion block, and the slider is movably installed in the sliding opening.

[0011] Preferably, a set of vertically symmetrical fixing rods are fixedly installed inside the transverse opening, and a set of horizontally symmetrical compression springs are fitted on the rods. The outer ends of the compression springs are fixedly installed together with the inner sidewall of the transverse opening. The clamping plate is provided with a set of horizontally symmetrical clamping rods, and a connecting plate is fixedly installed on the rear wall of the clamping plate. A set of vertically symmetrical connecting holes are opened on the side wall of the connecting plate, and the connecting plate is movably installed together with the fixing rods through the connecting holes. The inner ends of the compression springs are fixedly installed on the outer side wall of the connecting plate, and a right-angled triangular pressure block is also fixedly installed on the rear wall of the connecting plate. The opposite walls of the symmetrical clamping plates are respectively provided with clamping grooves.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the automatic yarn clamping mechanism, when a malfunction causes yarn rebound, activates a cylinder that drives the output end to move the compression block backward, preventing it from pressing the pressure block to the sides. This causes the compression spring on the fixed rod to extend and push the connecting plate in the opposite direction. The connecting plate then moves along the fixed rod through the connecting hole on the side wall. Simultaneously, the symmetrical clamping plates move in sync with the clamping grooves on the opposite walls, automatically clamping the yarn passing through the guide holes on the top surfaces of the symmetrical guide plates under elastic force. This prevents yarn rebound, thus enabling the aramid yarn twisting mechanism to automatically clamp the yarn. By promptly clamping and fixing the rebounding yarn, it not only avoids yarn rebound and dragging but also ensures the tension of the yarn before re-twisting, allowing for effective twisting and ultimately improving the quality of the twisted yarn. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the frame of this utility model;

[0016] Figure 3 This is a structural breakdown diagram of the automatic yarn clamping mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the extrusion block of this utility model.

[0018] In the diagram: 1. Frame; 2. Drive motor; 3. Spindle holder; 4. Twisting disc; 5. Hollow spindle; 6. Yarn outlet channel; 7. Yarn outer tube; 8. Automatic yarn clamping mechanism; 9. Support plate; 10. Transverse plate; 11. Transverse opening; 12. Guide plate; 13. Guide hole; 14. L-shaped plate; 15. Sliding opening; 16. Cylinder; 17. Extrusion block; 18. Slider; 19. Fixing rod; 20. Compression spring; 21. Wire clamping plate; 22. Connecting plate; 23. Connecting hole; 24. Pressure block; 25. Wire clamping groove. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1 - Figure 4As shown, an aramid yarn twisting mechanism with automatic yarn clamping function includes a frame 1. A drive motor 2 is fixedly connected to the bottom surface of the frame 1, and a spindle seat 3 is fixedly connected to the output end of the drive motor 2. A twisting disc 4 is fixedly connected to the top surface of the spindle seat 3, and a hollow spindle 5 is fixedly connected to the top surface of the twisting disc 4. A yarn outlet channel 6 communicating with the hollow spindle 5 is opened on the outer wall of the twisting disc 4, and a yarn outer cylinder 7 is fixedly connected to the outer wall of the hollow spindle 5. An automatic yarn clamping mechanism 8 is provided above the frame 1, and the automatic yarn clamping mechanism 8 includes a transverse plate 10, an L-shaped plate 14, a cylinder 16, and a pressing block. 17. Fixed rod 19, compression spring 20, clamping plate 21, connecting plate 22 and pressure block 24. The transverse plate 10 is fixedly connected between the symmetrical support plates 9 on the top surface of the frame 1, and the cylinder 16 is fixedly connected to the rear end of the L-shaped plate 14 on the rear wall of the transverse plate 10. A pressing block 17 is also fixedly connected to the output end of the cylinder 16. A set of symmetrical compression springs 20 are respectively fitted on the outside of the symmetrical fixed rods 19 on the front wall of the transverse plate 10, and the opposite ends of the symmetrical compression springs 20 are respectively fixedly connected to the connecting plate 22. The clamping plate 21 and the pressure block 24 are respectively fixedly connected to the front and rear ends of the connecting plate 22.

[0021] like Figure 2 As shown, a set of left-right symmetrical support plates 9 are fixedly installed on the top surface of the frame 1, and a horizontal plate 10 is fixedly installed above the left-right symmetrical support plates 9. A set of upper-lower symmetrical guide plates 12 are fixedly installed on the front wall of the horizontal plate 10, and a through guide hole 13 is opened on the guide plate 12. The guide hole 13 opened on the top surface of the guide plate 12 can guide the yarn.

[0022] like Figure 2 As shown, a horizontal opening 11 is provided on the horizontal plate 10. The horizontal opening 11 is used to cooperate with the connecting plate 22 to realize the horizontal movement operation.

[0023] like Figure 2 As shown, an L-shaped plate 14 is fixedly installed on the bottom of the rear wall of the horizontal plate 10, and a sliding opening 15 is provided on the horizontal part of the L-shaped plate 14. The sliding opening 15 is used to cooperate with the slider 18 to realize the sliding operation.

[0024] like Figure 3 and Figure 4 As shown, cylinder 16 is fixedly installed on the rear wall of the vertical part of L-shaped plate 14, and an isosceles trapezoidal extrusion block 17 is fixedly installed on the output end of cylinder 16. A slider 18 is fixedly installed on the bottom surface of extrusion block 17, and slider 18 is movably installed in slide opening 15. When cylinder 16 is turned on, the output end can be driven to move extrusion block 17 backward, and slider 18 installed on the bottom surface of extrusion block 17 will slide in slide opening 15.

[0025] like Figure 3As shown, a set of vertically symmetrical fixing rods 19 are fixedly installed inside the transverse opening 11, and a set of horizontally symmetrical compression springs 20 are fitted on the rods 19. The outer ends of the compression springs 20 are fixedly installed to the inner sidewall of the transverse opening 11. The clamping plate 21 has a set of horizontally symmetrical clamps, and a connecting plate 22 is fixedly installed on the rear wall of the clamping plate 21. A set of vertically symmetrical connecting holes 23 are opened on the sidewall of the connecting plate 22, and the connecting plate 22 is movably installed to the fixing rods 19 through the connecting holes 23. The inner ends of the compression springs 20 are fixedly installed on the outer sidewall of the connecting plate 22, and... A right-angled triangular pressure block 24 is fixedly installed on the rear wall of the connecting plate 22. The opposing walls of the symmetrical clamping plates 21 are respectively provided with clamping grooves 25. When the pressing block 17 moves and no longer presses the pressure blocks 24 on both sides, the compression spring 20 will perform a springback and extension operation, and push the connecting plate 22 so that the connecting plate 22 moves inward along the fixing rod 19 through the connecting hole 23 opened on the side wall, so as to drive the clamping plate 21 to move synchronously until the symmetrical clamping plates 21 cooperate with the clamping grooves 25 opened on the opposing walls to automatically clamp the yarn between the clamping plates 21 to prevent the yarn from springing back.

[0026] The specific operating principle of the automatic yarn clamping mechanism 8 in conjunction with the aramid yarn twisting mechanism is as follows:

[0027] When the aramid yarn twisting mechanism is in use, the yarn bobbin containing the yarn is fitted onto the outside of the spindle seat 3 and protected by the yarn outer bobbin 7. One end of the yarn is passed through the hollow spindle 5 and then through the yarn outlet channel 6 opened on the side wall of the twisting disc 4. The yarn end is then passed through the wire hole 13 opened on the top surface of the wire guide plate 12 installed on the front wall of the transverse plate 10. When the yarn needs to be twisted, the drive motor 2 installed on the bottom surface of the frame 1 is turned on to drive the output end to rotate the spindle seat 3, which in turn drives the twisting disc 4 on the top surface to rotate. The twisting of the yarn is completed during the rotation process.

[0028] When the aramid yarn twisting mechanism stops operating due to equipment failure or other reasons while twisting the yarn, the cylinder 16 installed on the rear wall of the vertical part of the L-shaped plate 14 will drive the output end to move the isosceles trapezoidal extrusion block 17 backward on the top surface of the horizontal part of the L-shaped plate 14. During the movement, the slider 18 installed on the bottom surface of the extrusion block 17 will slide within the sliding opening 15 opened on the top surface of the horizontal part of the L-shaped plate 14 until the extrusion block 17 no longer extrudes the pressure blocks 24 located on the left and right sides. After the pressure blocks 24 lose the extrusion force from the extrusion block 17, the compression spring 20 fitted outside the fixing rod 19 will perform a restoring extension operation and push the connecting plate 22 inward. This causes the connecting plate 22 to move through the connecting hole 23 opened on the side wall and along the horizontal opening 11 opened on the front wall of the horizontal plate 10 by the fixing rod 19. At this time, the symmetrical connecting plates 22 will perform a relative movement operation, thereby driving the symmetrical clamping plates 21 to perform synchronous relative movement. The operation continues until the clamping plate 21 engages with the clamping groove 25 on the opposite wall to automatically and elastically clamp and fix the yarn passing between the guide plates 12 between the clamping plates 21. This prevents the yarn from springing back, thus enabling the aramid yarn twisting mechanism to have an automatic yarn clamping function. By automatically and elastically clamping and fixing the springback yarn in a timely manner, not only can the problem of yarn springback and drag be avoided, but the tension of the yarn before re-twisting can also be ensured, and the yarn can be effectively twisted, thereby improving the quality of the twisted yarn. Finally, when re-twisting the yarn, the cylinder 16 can be activated to drive the output end to push the extrusion block 17 forward, so that the extrusion block 17 squeezes and pushes the pressure block 24 in both directions, so that the pressure block 24 drives the connecting plate 22 to move outward, and through the connecting plate 22, drives the clamping plate 21 to move, so that the symmetrical clamping plates 21 move in opposite directions and separate, no longer clamping the yarn, and the yarn can be twisted again.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aramid yarn twisting mechanism with automatic yarn clamping function, comprising a frame (1), characterized in that: An automatic yarn clamping mechanism (8) is provided above the frame (1), and the automatic yarn clamping mechanism (8) includes a transverse plate (10), an L-shaped plate (14), a cylinder (16), a pressing block (17), a fixing rod (19), a compression spring (20), a clamping plate (21), a connecting plate (22), and a pressure block (24). The transverse plate (10) is fixedly connected between the symmetrical support plates (9) on the top surface of the frame (1), and the cylinder (16) is fixedly connected to the transverse plate. (10) The rear end of the L-shaped plate (14) of the rear wall and the output end of the cylinder (16) are also fixedly connected to the compression block (17). A set of symmetrical compression springs (20) are respectively fitted on the outside of the symmetrical fixing rods (19) inside the front wall of the transverse plate (10). The opposite ends of the symmetrical compression springs (20) are respectively fixedly connected to the connecting plate (22). The front and rear ends of the connecting plate (22) are respectively fixedly connected to the clamping plate (21) and the pressure block (24).

2. The aramid yarn twisting mechanism with automatic yarn clamping function according to claim 1, characterized in that: A drive motor (2) is fixedly connected to the bottom surface of the frame (1), and a spindle seat (3) is fixedly connected to the output end of the drive motor (2). A twisting disc (4) is fixedly connected to the top surface of the spindle seat (3), and a hollow spindle (5) is fixedly connected to the top surface of the twisting disc (4). A yarn outlet channel (6) communicating with the hollow spindle (5) is opened on the outer wall of the twisting disc (4), and a yarn outer cylinder (7) is fixedly connected to the outer wall of the hollow spindle (5). A set of left-right symmetrical support plates (9) is fixedly installed on the top surface of the frame (1), and a transverse plate (10) is fixedly installed above the left-right symmetrical support plates (9). A set of upper-lower symmetrical guide plates (12) is fixedly installed on the front wall of the transverse plate (10), and a through guide hole (13) is opened on the guide plate (12).

3. The aramid yarn twisting mechanism with automatic yarn clamping function according to claim 2, characterized in that: A horizontal opening (11) is provided on the horizontal plate (10).

4. The aramid yarn doubling mechanism with automatic yarn clamping function according to claim 3, characterized in that: An L-shaped plate (14) is fixedly installed on the bottom of the rear wall of the transverse plate (10), and a sliding opening (15) is provided on the transverse part of the L-shaped plate (14).

5. The aramid yarn doubling mechanism with automatic yarn clamping function according to claim 4, characterized in that: The cylinder (16) is fixedly installed on the rear wall of the vertical part of the L-shaped plate (14), and an isosceles trapezoidal extrusion block (17) is fixedly installed on the output end of the cylinder (16). A slider (18) is fixedly installed on the bottom surface of the extrusion block (17), and the slider (18) is movably installed in the slide (15).

6. The aramid yarn doubling mechanism with automatic yarn clamping function according to claim 5, characterized in that: A set of vertically symmetrical fixing rods (19) are fixedly installed inside the transverse opening (11), and a set of horizontally symmetrical compression springs (20) are fitted on the rod body of the fixing rods (19). The outer ends of the compression springs (20) are fixedly installed together with the inner sidewall of the transverse opening (11). The clamping plate (21) is provided with a set of horizontally symmetrical ones, and a connecting plate (22) is fixedly installed on the rear wall of the clamping plate (21). A set of vertically symmetrical connecting holes (23) are opened on the side wall of the connecting plate (22), and the connecting plate (22) is movably installed together with the fixing rods (19) through the connecting holes (23). The inner end of the compression springs (20) is fixedly installed on the outer side wall of the connecting plate (22), and a right-angled triangular pressure block (24) is also fixedly installed on the rear end wall of the connecting plate (22). The opposite walls of the symmetrical clamping plates (21) are respectively provided with clamping grooves (25).

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