High-sensitivity yarn tension detection device and assembly structure thereof

Abstract

The utility model relates to a high-sensitivity yarn tension detection device and an assembly structure thereof, which are characterized in that a tension roller is arranged right above or right below a rotating shaft in a hanging or supporting manner, and a strain pressure sensor is arranged on one side of a linkage arm along the swinging direction of the linkage arm; in this way, the strain pressure sensor is not affected by the dead weight of the tension roller, that is, in the non-detection state, the strain pressure sensor is not pressed, and no detection data is output; the tension of the yarn can be completely transferred to the strain pressure sensor by the micro swing of the tension roller driven by the tension of the yarn, and the strain pressure sensor is not pressed before detecting the tension of the yarn, so that the detection precision is extremely high, the tension of the yarn can be sensitively detected, and the detection result can be output. According to the utility model, a counterweight roller is omitted, so that the structure of the detection device is greatly simplified, the space required by assembly is reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the measurement technical field, concretely relates to a high -sensitive yarn tension detection device. BACKGROUND

[0002] Yarn needs to control tension in the process of winding, otherwise will cause yarn winding density to be uneven because of uneven tension, reduces the quality of weaving shaft, in order to accurately control tension, need to carry out online detection to the tension of yarn, through the feedback of detection result, adjusts yarn take-up and pay-off speed in time to make yarn tension return to predetermined range.

[0003] The conventional yarn tension detection device is usually implemented by tension roller and pressure sensor cooperation, and the pressure sensor is usually directly connected with the tension roller, and before detecting the yarn tension, the pressure sensor has been affected by the weight of the tension roller, which causes the pressure sensor to be subjected to long-term stress, and the sensor zero drift is easy to reduce the detection accuracy;And on this basis, the yarn tension is detected, which belongs to incremental detection, and when the yarn tension is much smaller than the weight of the tension roller, the detection accuracy of the pressure sensor will be reduced, therefore, the detection accuracy of the conventional detection device is not high, and the detection sensitivity is poor, and the slight tension change can not be detected.

[0004] In addition, the vibration generated by the tension roller during operation also enlarges the error of detection data, which causes the problem of low detection accuracy.

[0005] In order to solve this technical problem, the utility model patent with patent number "ZL 201720220141.3" discloses a sizing machine winding tension closed loop structure, which adopts lever principle, sets the counterweight roller corresponding to the tension roller to eliminate the influence of the weight of the tension roller on the tension detection, but this structure has the disadvantages of complex mechanism, high cost, large occupied assembly space, etc., which causes the difficulty in actual popularization and use, and the user acceptance rate is low. UTILITY MODEL CONTENT

[0006] The utility model first needs to solve the technical problem: provide a kind of high-sensitivity yarn tension detection device, solve the technical problems such as the structure of conventional high-sensitivity yarn tension detection device complex, high in cost, large occupied assembly space.

[0007] The utility model provides a high -sensitive yarn tension detection device, including tension roller and strain pressure sensor, the tension roller horizontal setting, and tension roller both ends are connected in the pivot through the connecting arm respectively, and the pivot is arranged in the just above or just below of tension roller, and the connecting arm is all rotatoryly connected with tension roller, pivot, and the one side of connecting arm swing direction is provided with a positioning module, the strain pressure sensor sets up between the connecting arm and positioning module, and positioning module is used for limiting strain pressure sensor whole body removes, and strain pressure sensor is used for detecting the force that connecting arm swings extrusion strain pressure sensor, the strain pressure sensor and controller electric connection.

[0008] As a preferred scheme, one end of the strain pressure sensor is fixedly connected with the connecting arm, and the other end is detachably abutted on the positioning module; or one end of the strain pressure sensor is fixedly connected with the positioning module, and the other end is detachably abutted on one side of the connecting arm; or both ends of the strain pressure sensor are fixedly connected with the positioning module and the connecting arm respectively.

[0009] As a preferred scheme, the positioning module comprises a positioning shaft and a joint bearing sleeved on the positioning shaft, a support ring is sleeved outside the joint bearing, the support ring is fixedly connected with the outer wall of the joint bearing, and the outer wall of the support ring is connected or abutted with the strain pressure sensor.

[0010] As a preferred scheme, the tension roller is connected at the lower end of the connecting arm, and the tension roller is hung just below the pivot.

[0011] As a preferred scheme, the tension roller is connected at the upper end of the connecting arm, and the tension roller is hung just above the pivot under the support of the connecting arm.

[0012] The utility model discloses a high -sensitive yarn tension detection device's assembly structure, solves the technical problem of unstable yarn winding tension of the head piece of the sizing machine.

[0013] To solve the above technical problem, the utility model adopts the technical scheme of a kind of high -sensitive yarn tension detection device's assembly structure, the high -sensitive yarn tension detection device described above is arranged between the head side presser bar of the head of sizing machine and the weaving shaft for winding, the pivot is fixedly connected on the frame of the head of sizing machine, positioning module is also fixedly connected on the frame of the head of sizing machine, the winding driver of the weaving shaft is connected with controller, and is controlled by controller.

[0014] As a preferred solution, the high-sensitivity yarn tension detection device has two tension rollers, and the one side of the connecting arm extends outward to form two pairs of supports arranged in an upper and lower manner, and the two tension rollers are respectively rotationally connected to the two pairs of supports, when the connecting arm naturally droops, the two tension rollers are vertically arranged in an upper and lower manner, and the outer edges of the tension rollers are offset to the outside of the maximum outer diameter of the beam, when the beam winds the sheet yarn, the sheet yarn keeps in contact with the two tension rollers.

[0015] The utility model discloses the beneficial effects are: the utility model discloses the mode of suspension sets up tension roller, and sets up strain pressure sensor on the one side of connecting arm along the swing direction of connecting arm, like this can make strain pressure sensor not be influenced by the dead weight of tension roller, namely in the non - detection state, strain pressure sensor is not under pressure, and no detection data output, and when the tension of yarn exerts force on tension roller, the tension of yarn drives the slight swing of tension roller can completely shift the tension of yarn to strain pressure sensor, and strain pressure sensor is not under pressure before detecting the tension of yarn, therefore the detection precision is extremely high, can sensitively detect the tension of yarn and output detection result, compared with prior art, the present application cancels the counterweight roller, greatly simplifies the structure of detection device, reduces the space required for assembling, reduces production cost.

[0016] Compared with the prior art, the technical scheme adopted by the utility model eliminates the influence of the motion inertia caused by the large fluctuation of the position of the tension roller on the tension detection precision, and also avoids the control lag caused by the cylinder piston sealing damping when the tension cylinder is used to support the tension roller, thereby causing the problems of poor timeliness of the tension detection result and large fluctuation of the yarn tension.

[0017] The utility model further sets the high-sensitivity yarn tension detection device between the head side presser bar of the yarn doubling machine head and the beam, detects the tension of the sheet yarn in the winding process and feeds back to the controller, so that the controller can control the winding speed of the beam in time according to the detection result, controls the tension of the sheet yarn in the winding process to keep stable, and improves the yarn doubling quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] The specific embodiment of the utility model will be further explained in detail in combination with the drawings, in which:

[0019] Figure 1 It is the specific structure schematic diagram of the high-sensitivity yarn tension detection device of example 1;

[0020] Figure 2 It is another specific structure schematic diagram of the high-sensitivity yarn tension detection device of example 1;

[0021] Figure 3 It is the specific structure schematic diagram of the assembly structure of the high-sensitivity yarn tension detection device of example 2;

[0022] Figure 4 This is a schematic diagram of the specific structure of the high-sensitivity yarn tension detection device described in Example 2;

[0023] Figures 1-4 In the middle: 1. Tension roller; 2. Strain pressure sensor; 3. Connecting arm; 4. Rotating shaft; 5. Positioning module; 501. Positioning shaft; 502. Spherical bearing; 503. Support ring; 6. Controller; 8. Head side pressure roller; 9. Weaving beam; 100. High-sensitivity yarn tension detection device. Detailed Implementation

[0024] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings. Example 1

[0025] like Figure 1 The high-sensitivity yarn tension detection device shown includes a tension roller 1 and a strain pressure sensor 2. The tension roller 1 is horizontally positioned, with both ends suspended from a rotating shaft 4 via connecting arms 3. The rotating shaft 4 is positioned parallel above the tension roller 1. The connecting arms 3 are rotatably connected to both the tension roller 1 and the rotating shaft 4. Under its own weight, the tension roller 1 hangs naturally below the rotating shaft 4. A positioning module 5 is located on one side of the swing direction of the connecting arms 3. The strain pressure sensor 2 is positioned between the connecting arms 3 and the positioning module 5. The positioning module 5 restricts the overall movement of the strain pressure sensor 2. The strain pressure sensor 2 detects the force exerted by the swinging of the connecting arms 3 on the strain pressure sensor 2. The strain pressure sensor 2 is electrically connected to a controller 6. When the tension roller 1 is subjected to a rightward thrust F, the tension roller 1 swings slightly, compressing and deforming the strain pressure sensor 2. This causes a change in the output voltage of the strain pressure sensor 2. Since the strain pressure sensor 2 is not affected by the gravity of the tension roller 1 before being compressed, it can sensitively detect the pressure change when compressed by the tension roller 1 and output the detection result. Because the tension roller is obstructed by the strain pressure sensor 2, it cannot produce significant oscillation. Therefore, under slight oscillation, the component of the tension roller in the opposite direction of the thrust F is negligible. This allows the strain pressure sensor 2 to accurately detect the magnitude of the thrust F experienced by the tension roller 1, and then convert it into the yarn tension based on the yarn path direction, angle, and other conditions. The yarn tension conversion formula belongs to the basic knowledge of physics and mechanics, and will not be elaborated here.

[0026] In this embodiment, the two ends of the strain pressure sensor 2 are fixedly connected to the positioning module 5 and the connecting arm 3, respectively.

[0027] In practical applications, one end of the strain pressure sensor 2 can be fixedly connected to the connecting arm 3 or the positioning module 5, while the other end can be detachably abutted against the positioning module 5 or one side of the connecting arm 3.

[0028] The positioning module 5 described in the embodiment comprises a positioning shaft 501 parallel to the rotating shaft 4 and an articulation bearing 502 sleeved on the positioning shaft 501, and the articulation bearing 502 is externally sleeved with a supporting ring 503 fixedly connected with the outer wall of the articulation bearing 502, and the outer wall of the supporting ring 503 is connected with or abuts against the strain pressure sensor 2.

[0029] The adoption of the articulation bearing 502 to connect the positioning shaft 501 and the supporting ring 503 enables the supporting ring 503 to swing along the axial direction of the positioning shaft 501, thereby adapting to the axial movement of the tension roller 1 and eliminating the influence of the axial movement of the tension roller 1 on the detection result of the strain pressure sensor 2, and improving the detection progress of the strain pressure sensor 2 on the yarn tension.

[0030] The tension roller 1 is connected at the lower end of the connecting arm 3. The tension roller 1 is preferably a hollow cylindrical roller, so as to reduce the self-weight of the tension roller 1 and further reduce the self-weight component of the tension roller 1 against the yarn tension caused by the slight swing of the tension roller 1.

[0031] As shown in Figure 2 In actual application, the tension roller 1 can also be connected at the upper end of the connecting arm 3, and the tension roller 1 is suspended above the rotating shaft 4 by the support of the connecting arm 3, at this time, the weight of the tension roller 1 is basically borne by the connecting arm 3, so the gravity of the tension roller 1 hardly affects the detection result of the strain pressure sensor 2, and the detection progress of the strain pressure sensor 2 on the yarn tension can also be improved. Embodiment 2

[0032] As shown in Figure 3 The assembly structure of the high-sensitivity yarn tension detection device is shown in the figure. The high-sensitivity yarn tension detection device described in Embodiment 1 is arranged between the head-side presser bar 8 of the head of the sizing machine and the weaving beam 9 for winding, the rotating shaft 4 is fixedly connected at both ends to the frame of the head of the sizing machine, the positioning module 5 is also fixedly connected to the frame of the head of the sizing machine, the winding driver for driving the weaving beam 9 to rotate is connected with the controller 6 and is controlled by the controller 6.

[0033] The side of the tension roller 1 opposite to the strain pressure sensor 2 abuts against the running sheet yarn, and the sheet yarn forms a surrounding arc on the surface of the tension roller 1. The tension of the sheet yarn exerts a pressing force on the tension roller 1 along the swing direction of the tension roller 1, the pressing force is conducted to the strain pressure sensor 2 through the tension roller 1 and the connecting arm 3, the strain pressure sensor 2 sends the detection result to the controller 6, and the controller 6 adjusts the rotating speed of the weaving beam 9 according to the change of the detected pressure value, so that the tension of the sheet yarn returns to the predetermined value. The sheet yarn in the embodiment refers to a plurality of yarns arranged side by side.

[0034] As shown in Figure 4As shown, this embodiment can be further improved to the high-sensitivity yarn tension detection device. The high-sensitivity yarn tension detection device has two tension rollers 1. One side of the connecting arm 3 extends outward to form two pairs of supports 10 arranged vertically. The two tension rollers 1 are rotatably connected to the two pairs of supports 10 respectively. When the connecting arm 3 hangs down naturally, the two tension rollers 1 are arranged vertically. The outer edge of the tension roller 1 is offset outside the maximum outer diameter of the warp beam 9. When the warp beam 9 winds the yarn, the yarn remains in contact with the two tension rollers 1.

[0035] To maintain the balance of the high-sensitivity yarn tension detection device, the thickness of the connecting arm 3 can be increased to adjust the center of gravity of the high-sensitivity yarn tension detection device, so that the center of gravity of the high-sensitivity yarn tension detection device is located directly below the rotating shaft 4.

[0036] use Figure 4 The high-sensitivity yarn tension detection device 100 shown uses two tension rollers 1 to apply force, ensuring that the thrust F of the yarn tension acting on the connecting arm 3 remains horizontal. This eliminates the technical problem of inaccurate detection results caused by changes in the direction of the thrust F due to changes in the outer diameter of the warp beam 9.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A high sensitivity yarn tension detection device comprising a tension roller (1) and a strain pressure sensor (2), characterized in that, The tension roller (1) is horizontally arranged, and the two ends of the tension roller (1) are connected to the rotating shaft (4) through the connecting arm (3) respectively, the rotating shaft (4) is arranged in parallel above or below the tension roller (1), the connecting arm (3) is rotatably connected with the tension roller (1) and the rotating shaft (4), one side of the connecting arm (3) in the swinging direction is provided with a positioning module (5), the strain pressure sensor (2) is arranged between the connecting arm (3) and the positioning module (5), the positioning module (5) is used for limiting the overall movement of the strain pressure sensor (2), and the strain pressure sensor (2) is used for detecting the force of the connecting arm (3) swinging and pressing the strain pressure sensor (2), and the strain pressure sensor (2) is electrically connected with the controller (6).

2. The high sensitivity yarn tension detection device according to claim 1, characterized in that, One end of the strain pressure sensor (2) is fixedly connected with the connecting arm (3), and the other end is detachably abutted on the positioning module (5); Or one end of the strain pressure sensor (2) is fixedly connected with the positioning module (5), and the other end is detachably abutted on one side of the connecting arm (3); Or both ends of the strain pressure sensor (2) are fixedly connected with the positioning module (5) and the connecting arm (3) respectively.

3. The high sensitivity yarn tension detection device of claim 2, wherein, The positioning module (5) comprises a positioning shaft (501) and a joint bearing (502) sleeved on the positioning shaft (501), a supporting ring (503) is sleeved outside the joint bearing (502), the supporting ring (503) is fixedly connected with the outer wall of the joint bearing (502), and the outer wall of the supporting ring (503) is connected or abutted with the strain pressure sensor (2).

4. The high sensitivity yarn tension detection device of claim 1, wherein, The tension roller (1) is connected to the lower end of the connecting arm (3), and the tension roller (1) is hung below the rotating shaft (4).

5. The high sensitivity yarn tension detection device of claim 1, wherein, The tension roller (1) is connected to the upper end of the connecting arm (3), and the tension roller (1) is suspended above the rotating shaft (4) by the support of the connecting arm (3).

6. An assembly structure of a high-sensitivity yarn tension detection device, characterized by comprising: The high-sensitivity yarn tension detection device of any one of claims 1-5 is arranged between the head-side presser roller (8) of the sizing machine head and the weaving beam (9) for winding, the rotating shaft (4) is fixedly connected to the rack of the sizing machine head, the positioning module (5) is also fixedly connected to the rack of the sizing machine head, the winding driver of the weaving beam (9) is connected with the controller and is controlled by the controller.

7. The assembly structure of the high-sensitivity yarn tension detection device according to claim 6, characterized by The high-sensitivity yarn tension detection device has two tension rollers (1), one side of the connecting arm (3) extends outward to form two pairs of supports (10) arranged in upper and lower rows, and the two tension rollers (1) are rotatably connected to the two pairs of supports (10) respectively, when the connecting arm (3) naturally droops, the two tension rollers (1) are vertically arranged in upper and lower rows, the outer edge of the tension roller (1) is offset to the outside of the maximum outer diameter of the weaving beam (9), and when the sheet yarn is wound on the weaving beam (9), the sheet yarn keeps in contact with the two tension rollers (1).

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