Yarn tension adjusting mechanism of roving frame

Abstract

The utility model discloses a yarn tension adjusting mechanism of a roving frame, which belongs to the technical field of spinning production equipment, and comprises a supporting seat and a mounting cavity arranged on the supporting seat, and further comprises a supporting column fixed in the mounting cavity, the supporting screw rod is rotationally connected with a vertical groove formed in the supporting column, and the nut seat is installed on the supporting screw rod in a threaded mode. By adjusting the height of the nut seat up and down and matching with the upper support arm, the lower support arm and the support screw rod, the tension on the roving can be flexibly adjusted by adjusting the horizontal included angle between the movable pulley and the fixed pulley, and the pressure of part of the movable pulley on the roving is converted by the elastic force of the pressure spring, so that the roving is more stable. Therefore, after the tension of the roving is adjusted in a large range, a certain elastic force adjusting range can be reserved for the pressure spring, so that the influence on the normal conveying stability of the roving caused by small-amplitude sudden change of the tension on the roving is buffered.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning production equipment, in particular to a yarn tension regulating mechanism of a roving frame. Background Art

[0002] Weaving refers to twisting animal fibers or plant fibers together into threads or yarns, and then weaving these threads or yarns into cloth, which can then be used to make clothes. The spinning process is divided into the coarse yarn stage and the fine yarn stage. In the coarse yarn weaving stage, a coarse yarn machine is used to twist and draft it. During the twisting and drafting process, a tension adjustment mechanism is needed to adjust the tension of the coarse yarn to avoid the coarse yarn tension being too low and affecting the transportation, or the coarse yarn tension being too large and breaking. Since the tension on the yarn can be controlled over a large range, while the tension on it is relatively random and difficult to control in a small range, some existing yarn tension adjustment mechanisms are difficult to reserve sufficient buffer range for the tension changes on the yarn during use, and when the tension on the yarn changes suddenly, the yarn breaks or becomes loose, affecting the stability of normal yarn transportation.

[0003] The existing patent application number: 202220035458.0 discloses a tension adjustment device for a roving frame for spinning. Through the synchronous action of the first electric telescopic rod and the second electric telescopic rod, the adjustment wheel and the wax rolling shaft are synchronized. In the process of adjusting the yarn tension, the yarn can also be waxed synchronously to protect the yarn and avoid subsequent wear. In the above-mentioned prior art, the device only adjusts the yarn tension by changing the adjustment position of the first electric telescopic rod, which is difficult to provide a sufficient buffer range for the tension change of the yarn, and the above-mentioned technical problems still exist. Utility Model Content

[0004] The purpose of the utility model is to provide a yarn tension adjustment mechanism for a roving machine, so as to solve the problem proposed in the above background technology that it is difficult to provide a sufficient buffer range for the tension change of the yarn, and the yarn breaks or becomes loose when the tension suddenly changes, thereby affecting the stability of normal yarn transportation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a yarn tension adjustment mechanism for a roving frame, comprising a support seat and a mounting cavity arranged on the support seat, and the yarn tension adjustment mechanism for the roving frame further comprises:

[0007] A support column is fixed in the installation cavity.

[0008] A support screw is rotatably connected to the vertical slot provided on the support column.

[0009] A nut seat is threadedly mounted on the support screw.

[0010] An upper support arm is relatively hinged to the inner wall of the installation cavity.

[0011] A lower support arm is hinged to the free end of the upper support arm.

[0012] A support plate is hinged to one end of the lower support arm.

[0013] A sliding seat is fixed on one side of the support plate and is used to support the lower support arm. The support screw passes through a sliding hole provided on the sliding seat. The sliding seat is located in the nut seat.

[0014] Relative to the compression springs arranged on the support screw rod, the sliding seat is located between two of the compression springs, and the two compression springs are located in the nut seat.

[0015] Furthermore, the upper support arm and the lower support arm are relatively distributed on two sides of the outside of the support column, and the upper support arm and the lower support arm are combined to form an eight-shaped shape.

[0016] Furthermore, the yarn tension adjustment mechanism of the roving frame also includes a secondary wheel groove arranged on the free end of the upper support arm and a movable pulley rotatably arranged in the secondary wheel groove.

[0017] Furthermore, the yarn tension adjustment mechanism of the roving frame also includes a main wheel groove arranged on the top of the support column and a fixed pulley rotatably arranged in the main wheel groove.

[0018] Furthermore, the yarn tension adjustment mechanism of the roving frame further comprises:

[0019] A reinforcement block is relatively fixed on the support seat.

[0020] A wire steel ring is fixed to the bottom of the reinforcement block.

[0021] Furthermore, the movable pulley is located between the fixed pulley and the conductor steel ring, and the roving routing path between the two conductor steel rings is W-shaped.

[0022] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0023] 1. The utility model adjusts the height of the nut seat up and down, and cooperates with the use of the upper support arm, the lower support arm and the support screw rod, and can adjust the horizontal angle between the movable pulley and the fixed pulley by rotating the support screw rod, so as to realize flexible adjustment of the tension on the roving, and the pressure of part of the movable pulley on the roving is converted from the elastic force of the compression spring, so that after the roving tension is adjusted over a large range, the compression spring can also reserve a certain elastic force adjustment range, so as to buffer the small sudden change of the tension on the roving, which affects the stability of the normal conveying of the roving;

[0024] 2. The utility model uses the movable pulleys and the conductor steel rings relatively arranged on both sides of the fixed pulley to enable the coarse yarn to be introduced into one of the movable pulleys from various angles and then led out from various angles by the other conductor steel ring, so that a reasonable coarse yarn routing path can be arranged in a relatively small space, thereby expanding the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axonometric drawing of the utility model;

[0026] Figure 2 It is an axonometric drawing of the utility model from an upward angle;

[0027] Figure 3 It is the front view of the utility model.

[0028] In the figure: 1. Support seat; 2. Mounting cavity; 3. Support column; 4. Vertical slot; 5. Support screw; 6. Upper support arm; 7. Lower support arm; 8. Support plate; 9. Sliding seat; 10. Sliding hole; 11. Compression spring; 12. Nut seat; 13. Main wheel groove; 14. Fixed pulley; 15. Auxiliary wheel groove; 16. Movable pulley; 17. Reinforcement block; 18. Wire steel ring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0030] like Figures 1 to 3 As shown, a yarn tension adjustment mechanism of a roving frame includes a support seat 1 and a mounting cavity 2 provided on the support seat 1. The support seat 1 is in a sideways U-shape, so that a sufficient opening is reserved in the mounting cavity 2 to facilitate the efficient threading operation when the roving is routed. The yarn tension adjustment mechanism of the roving frame also includes:

[0031] A support column 3 is fixed in the installation cavity 2 .

[0032] A support screw 5 is rotatably connected to a vertical slot 4 provided on the support column 3 .

[0033] The nut seat 12 is threadedly mounted on the support screw rod 5 .

[0034] Relative to the upper support arms 6 hinged on the inner wall of the installation cavity 2, the two upper support arms 6 are distributed in an eight-shaped shape.

[0035] The lower support arms 7 are hinged to the free ends of the upper support arms 6, and the two lower support arms 7 are distributed in an inverted figure eight shape.

[0036] A support plate 8 is hinged to one end of the lower support arm 7 , and the support plate 8 is located between the two lower support arms 7 .

[0037] A slide seat 9 is fixed to one side of the support plate 8 and is used to support the lower support arm 7 . The support screw rod 5 passes through a slide hole 10 provided on the slide seat 9 . The slide seat 9 is located in a nut seat 12 .

[0038] Relative to the compression springs 11 arranged on the support screw rod 5 , the slide seat 9 is located between the two compression springs 11 , and the two compression springs 11 are located in the nut seat 12 .

[0039] When the roving slips during the conveying process, the support screw rod 5 is rotated clockwise to adjust the height of the nut seat 12, so that it drives the slide seat 9 to move downward, and the lower end of the lower support arm 7 is pulled downward by the downwardly moved slide seat 9, thereby increasing the angle between the lower support arm 7 and the upper support arm 6, and adjusting the position of the hinge of the upper support arm 6 and the lower support arm 7 downward, increasing the downward pressure on the roving at the hinge of the two, thereby increasing the tension on the roving and making it slightly taut, solving the problem of roving slipping during the conveying process. Conversely, the screw rod 5 is rotated counterclockwise. The support screw 5 moves the nut seat 12 upward, which can reduce the pressure on the roving at the hinge of the upper support arm 6 and the lower support arm 7, thereby reducing the tension on the roving and making it slightly relaxed, so as to solve the problem of the roving breaking during transportation. After the tension adjustment operation on the roving is completed, since the compression spring 11 still has a certain elastic force, when the tension on the roving changes slightly, it can buffer the jitter caused by the small change in the tension on the roving, avoid breaking or slipping due to a small tension mutation, and maintain the stability of the roving during transportation.

[0040] In this embodiment, the upper support arm 6 and the lower support arm 7 are relatively distributed on both sides of the outside of the support column 3, and the upper support arm 6 and the lower support arm 7 are combined to form an eight-shape, which improves the support stability between the two during the tension adjustment and roving delivery process, and also enables the combination of the two groups of upper support arms 6 and lower support arms 7 to maintain synchronous movement during the tension adjustment and roving delivery process, so that the roving remains relatively stable during the tension adjustment and roving delivery process, and avoids asynchronous movement of the combination of the two groups of upper support arms 6 and lower support arms 7 during the tension adjustment and roving delivery process, which affects the normal roving delivery.

[0041] In this embodiment, the yarn tension adjustment mechanism of the roving machine also includes a secondary wheel groove 15 arranged on the free end of the upper support arm 6 and a movable pulley 16 rotatably arranged in the secondary wheel groove 15. The movable pulley 16 is arranged in parallel with the hinge of the upper support arm 6 and the lower support arm 7 to facilitate the smooth routing of the roving and to avoid the interference of the hinge of the lower support arm 7 with the roving transportation during tension adjustment, thereby affecting the normal transportation of the roving. It can not only maintain the stability of the roving transportation, but also facilitate the normal performance of the tension adjustment operation.

[0042] In this embodiment, the yarn tension adjustment mechanism of the roving machine also includes a main wheel groove 13 arranged at the top of the support column 3 and a fixed pulley 14 rotatably arranged in the main wheel groove 13. The top of the fixed pulley 14 is always higher than the bottom of the movable pulley 16. Since the upper support arm 6 is relatively distributed on both sides of the support column 3, and the lower support arm 7 is also relatively distributed on both sides of the support column 3, the movable pulley 16 is also relatively distributed on both sides of the fixed pulley 14. When the roving is running, it passes around the bottom of one of the movable pulleys 16 in turn, then passes around the top of the fixed pulley 14, and then passes around the bottom of the other movable pulley 16, so that the roving between the two movable pulleys 16 is in an inverted V shape, so that the movable pulley 16 can exert pressure on the roving, making it in a relatively tight state, and by adjusting the pressure of the movable pulley 16 on the roving, the effect of adjusting the roving tension is achieved.

[0043] In this embodiment, the yarn tension adjustment mechanism of the roving frame further includes:

[0044] A reinforcement block 17 fixed relatively to the support base 1 .

[0045] A wire steel ring 18 is fixed to the bottom of the reinforcement block 17 .

[0046] Since the surface of the conductor steel ring 18 is an arc-shaped surface, the roving can pass through the conductor steel ring 18 from any angle on one side of the conductor steel ring 18 and pass the roving to the bottom of the movable pulley 16, or the roving between the movable pulley 16 and the conductor steel ring 18 passes through the inside of the conductor steel ring 18 and guides the roving to any angle on one side of the conductor steel ring 18, so as to arrange the roving conveying path compactly in a relatively small space, thereby improving its scope of application.

[0047] In this embodiment, the movable pulley 16 is located between the fixed pulley 14 and the wire steel ring 18, and the roving routing path between the two wire steel rings 18 is W-shaped, so that the roving passes into one of the wire steel rings 18 and passes to the bottom of the adjacent movable pulley 16, bypasses the bottom of the movable pulley 16, and then bypasses the top of the fixed pulley 14, and then bypasses the bottom of the other movable pulley 16, and finally passes through the inside of the other wire steel ring 18, and leads the roving to the next process, so that the path of the roving in the installation cavity 2 is W-shaped, so as to facilitate the adjustment of the tension on the roving by adjusting the height of the movable pulley 16, and keep the roving in a relatively taut state to avoid the problem of derailment.

[0048] The above description is only the preferred embodiment of the utility model, and the parts not described in the utility model can be implemented by adopting or drawing on existing technologies. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. The changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the utility model should also fall within the protection scope of the utility model.

Claims

1. A yarn tension adjustment mechanism for a roving frame, comprising a support seat (1) and a mounting cavity (2) provided on the support seat (1), characterized in that: The yarn tension adjustment mechanism of the roving frame also includes: A support column (3) fixed in the installation cavity (2); A support screw rod (5) rotatably connected to a vertical slot (4) provided on the support column (3); A nut seat (12) threadedly mounted on the support screw (5); An upper support arm (6) hingedly connected to the inner wall of the installation cavity (2); A lower support arm (7) hinged to the free end of the upper support arm (6); A support plate (8) hinged to one end of the lower support arm (7); A slide seat (9) fixed to one side of the support plate (8) for supporting the lower support arm (7), the support screw rod (5) passing through a slide hole (10) provided on the slide seat (9), and the slide seat (9) being located in the nut seat (12); Relative to the compression spring (11) provided on the support screw rod (5), the slide seat (9) is located between the two compression springs (11), and the two compression springs (11) are located in the nut seat (12).

2. The yarn tension adjustment mechanism of the roving frame according to claim 1, characterized in that: The upper support arm (6) and the lower support arm (7) are relatively distributed on two sides of the outside of the support column (3), and the upper support arm (6) and the lower support arm (7) are combined to form an eight-shaped shape.

3. The yarn tension adjustment mechanism of the roving frame according to claim 2, characterized in that: The yarn tension adjustment mechanism of the roving frame further comprises a secondary wheel groove (15) provided on the free end of the upper support arm (6) and a movable pulley (16) rotatably provided in the secondary wheel groove (15).

4. The yarn tension adjustment mechanism of the roving frame according to claim 3, characterized in that: The yarn tension adjustment mechanism of the roving frame further comprises a main wheel groove (13) arranged at the top of the support column (3) and a fixed pulley (14) rotatably arranged in the main wheel groove (13).

5. The yarn tension adjustment mechanism of the roving frame according to claim 4, characterized in that: The yarn tension adjustment mechanism of the roving frame also includes: A reinforcing block (17) fixed relatively to the support seat (1); A wire steel ring (18) fixed to the bottom of the reinforcement block (17).

6. The yarn tension adjustment mechanism of the roving frame according to claim 5, characterized in that: The movable pulley (16) is located between the fixed pulley (14) and the conductor steel ring (18), and the roving routing path between the two conductor steel rings (18) is W-shaped.

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