阅读说明：本技术 张力标定方法 (Tension calibration method ) 是由 杨宋嘉 何小平 于 2019-09-20 设计创作，主要内容包括：本发明提供了一种张力标定方法,用于在纺织器械中标定纱线的张力,所述纺织器械包括标定物和张力检测组件,所述张力检测组件与所述纱线接触,所述张力检测组件包括用于检测所述纱线的压力的压力传感器,其特征在于,包括以下步骤:将所述标定物悬挂于所述纱线的一端,以使所述纱线产生与所述标定物的重量一致的张力；获取所述张力检测组件所包含的所述压力传感器检测到的压力值；将所述压力值标定为所述标定物的重量值。纱线受到的压力与本身的张力对应,通过将所述标定物悬挂于所述纱线的一端,能够获得与所述标定物的重量一致的张力,继而将所述压力传感器检测到的压力值标定为所述标定物的重量值,由此能够标定纱线的张力。(The invention provides a tension calibration method, which is used for calibrating the tension of yarn in a textile apparatus, wherein the textile apparatus comprises a calibration object and a tension detection assembly, the tension detection assembly is in contact with the yarn, and the tension detection assembly comprises a pressure sensor for detecting the pressure of the yarn; acquiring a pressure value detected by the pressure sensor included in the tension detection assembly; calibrating the pressure value as a weight value of the calibration object. The pressure applied to the yarn corresponds to the tension of the yarn, the tension consistent with the weight of the calibration object can be obtained by hanging the calibration object at one end of the yarn, and then the pressure value detected by the pressure sensor is calibrated to be the weight value of the calibration object, so that the tension of the yarn can be calibrated.)

1. A tension calibration method for calibrating tension of a yarn in a textile apparatus, the textile apparatus including a calibration object and a tension detection assembly, the tension detection assembly being in contact with the yarn, the tension detection assembly including a pressure sensor for detecting pressure of the yarn, the method comprising the steps of:

suspending the calibration object from one end of the yarn so that the yarn generates a tension consistent with the weight of the calibration object;

acquiring a pressure value detected by the pressure sensor included in the tension detection assembly;

calibrating the pressure value as a weight value of the calibration object.

2. The tension calibration method according to claim 1,

the tension detection assembly further comprises a tension detection rod, the tension detection rod is connected with the pressure sensor, and the tension detection rod is used for receiving the pressure of the yarn.

3. The tension calibration method according to claim 2,

the textile apparatus further comprises a frame and a first supporting shaft, the tension detecting assembly and the first supporting shaft are mounted on the frame, the axis of the first supporting shaft is parallel to that of the tension detecting rod, the yarn is perpendicular to that of the tension detecting rod, one end of the yarn, far away from the calibration object, is connected with the frame, and the tension calibrating method further comprises the following steps: winding the yarn on one side of the tension detection rod close to the ground; and winding and connecting the yarn to the side, far away from the ground, of the first support shaft.

4. The tension calibration method according to claim 3,

the tension detection assembly further comprises two optical axes, the two optical axes are mounted on the frame, the axes of the two optical axes are parallel to the axis of the tension detection rod, the two optical axes are respectively located on two sides of the tension detection rod and close to the pressure sensor, the two optical axes are used for adjusting the direction of the pressure of the yarn on the tension detection rod, and the tension calibration method further comprises the following steps: and winding and connecting the yarns on one side of the two optical axes close to the ground.

5. The tension calibration method according to claim 4,

the textile apparatus further comprises a second supporting shaft and a yarn coil, the second supporting shaft is mounted on the rack, the axis of the second supporting shaft is parallel to the axis of the tension detection rod, the yarn coil is mounted on the rack and used for winding the yarn, the second supporting shaft is located on one side, close to the yarn coil, of the tension detection rod, and the tension calibration method further comprises the following steps: and winding and connecting the yarn to the side, far away from the ground, of the second support shaft.

6. The tension calibration method according to claim 4,

the tension detection assembly further comprises a gasket, the gasket is located between the pressure sensor and the sensor support, and the gasket is used for adjusting the distance between the tension detection rod and the two optical axes.

7. The tension calibration method according to claim 6,

on a cross section perpendicular to an axis of the tension detection rod, an external common tangent of one of the optical axis and the tension detection rod, which is far away from the pressure sensor, and another external common tangent of the optical axis and the tension detection rod, which is far away from the pressure sensor, form a tangent included angle, the tangent included angle is smaller than 180 degrees, and an opening of the tangent included angle faces the pressure sensor, and the tension calibration method further includes: and adjusting the thickness of the gasket to enable the included angle of the tangent to be between 80 and 120 degrees.

8. The tension calibration method according to claim 4,

the two optical axes are rotatably connected with the frame.

9. The tension calibration method according to claim 5,

the first support shaft and/or the second support shaft are/is rotatably connected with the frame.

10. A tension calibration method as claimed in any one of claims 1 to 9, wherein the calibration object comprises a weight.

Technical Field

The invention relates to the technical field of textile machinery, in particular to a tension calibration method.

Background

During weaving, the tension of the yarn generally needs to be maintained within a stable range, and if the tension of the yarn is too low, the fabric may be bent or knotted. If the tension of the yarn is too high, it may cause the fabric to break. Therefore, it is often necessary to detect the tension of the yarn during the weaving process.

In the spinning process, one end of the yarn is connected with the yarn disc, the other end of the yarn is connected with the yarn disc, certain pressure is often required to be applied to the yarn between the yarn disc and the yarn disc when the tension of the yarn is measured, and the pressure and the tension of the yarn are often inconsistent.

Therefore, it is also desirable to provide a tension calibration method to solve the above problems.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides a tension calibration method for converting the pressure applied to a yarn into the tension applied to one end of the yarn.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a tension calibration method is used for calibrating the tension of yarn in a textile apparatus, the textile apparatus comprises a calibration object and a tension detection assembly, the tension detection assembly is in contact with the yarn, the tension detection assembly comprises a pressure sensor used for detecting the pressure of the yarn, and the method is characterized by comprising the following steps of suspending the calibration object at one end of the yarn so as to enable the yarn to generate the tension consistent with the weight of the calibration object; acquiring a pressure value detected by the pressure sensor included in the tension detection assembly; calibrating the pressure value as a weight value of the calibration object.

Preferably, the tension detection assembly further comprises a tension detection rod connected with the pressure sensor, and the tension detection rod is used for receiving the pressure of the yarn.

Preferably, the textile apparatus further includes a frame and a first support shaft, the tension detection assembly and the first support shaft are both mounted on the frame, an axis of the first support shaft is parallel to an axis of the tension detection rod, the yarn is perpendicular to the axis of the tension detection rod, and an end of the yarn far away from the calibration object is connected to the frame, and the tension calibration method further includes: winding the yarn on one side of the tension detection rod close to the ground; and winding and connecting the yarn to the side, far away from the ground, of the first support shaft.

Preferably, the tension detecting assembly further includes two optical axes, the two optical axes are mounted on the frame and are parallel to the axis of the tension detecting rod, the two optical axes are respectively located at two sides of the tension detecting rod and are close to the pressure sensor, the two optical axes are used for adjusting the direction of the pressure of the yarn on the tension detecting rod, and the tension calibrating method further includes: and winding and connecting the yarns on one side of the two optical axes close to the ground.

Preferably, the textile apparatus further includes a second support shaft and a yarn coil, the second support shaft is mounted to the frame and has an axis parallel to an axis of the tension detection rod, the yarn coil is mounted to the frame and is used for winding the yarn, the second support shaft is located on one side of the tension detection rod close to the yarn coil, and the tension calibration method further includes: and winding and connecting the yarn to the side, far away from the ground, of the second support shaft.

Preferably, the tension detection assembly further comprises a spacer located between the pressure sensor and the sensor holder, the spacer being used to adjust the distance between the tension detection rod and the two optical axes.

Preferably, on a cross section perpendicular to an axis of the tension detection rod, an external common tangent of one of the optical axis and the tension detection rod, which is far away from the pressure sensor, forms a tangent included angle with another external common tangent of the optical axis and the tension detection rod, which is far away from the pressure sensor, where the tangent included angle is smaller than 180 °, and an opening of the tangent included angle faces the pressure sensor, the tension calibration method further includes: and adjusting the thickness of the gasket to enable the included angle of the tangent to be between 80 and 120 degrees.

Preferably, the two optical axes are rotatably connected to the frame.

Preferably, the first support shaft and/or the second support shaft is rotatably connected with the frame.

Preferably, the calibration object comprises a weight.

Compared with the prior art, the invention mainly has the following beneficial effects:

the pressure applied to the yarn corresponds to the tension of the yarn, the tension consistent with the weight of the calibration object can be obtained by hanging the calibration object at one end of the yarn, and then the pressure value detected by the pressure sensor is calibrated to be the weight value of the calibration object, so that the tension of the yarn can be calibrated.

Drawings

In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic structural view of a textile apparatus in accordance with the present invention;

FIG. 2 is a schematic view of a tension sensing assembly in accordance with the present invention;

FIG. 3 is an exploded view of a tension sensing assembly in accordance with the present invention;

FIG. 4 is a schematic diagram of a tension sensing assembly in accordance with the present invention;

FIG. 5 is a schematic flow diagram of a tension calibration method involved in the present invention;

figure 6 is a schematic representation of the relationship of yarn pressure to tension involved in the present invention.

Reference numerals:

100-textile equipment, 10-frame, 20-yarn coil, 30-calibration object, 40-tension detection assembly, 41-sensor support, 42-pressure sensor, 421-installation part, 422-sensing part, 43-tension detection rod, 431-sensing protrusion, 44-optical axis, 45-shaft support seat, 46-gasket, 47-bearing, 48-central line, 51-first support shaft, 52-second support shaft and 90-yarn.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Fig. 1 is a schematic structural view of a textile apparatus according to the present invention.

The tension calibration method provided by the preferred embodiment of the present invention can be used to calibrate the tension of the yarn 90 in the textile apparatus 100. As shown in fig. 1, the textile apparatus 100 includes a frame 10, a yarn reel 20, a calibration object 30, a tension detecting assembly 40, a first support shaft 51 and a second support shaft 52. The tension detecting assembly 40, the first support shaft 51 and the second support shaft 52 are all mounted to the frame 10.

In this embodiment, the main body of the frame 10 may be constructed by a profile or welded by a steel pipe to provide support for other components.

In the present embodiment, the yarn reel 20 is used to wind the yarn 90. During the spinning process, yarn 90 is drawn from yarn reel 20 and ultimately into the body of the spinning machine (not shown) for spinning. The textile machine body is typically arranged on the side of the machine frame 10 remote from the yarn spool 20. The yarn spool 20 is rotatably mounted on the frame 10.

In this embodiment, the target 30 is suspended from one end of the yarn 90 so that the yarn 90 is tensioned in accordance with the weight of the target 30 and the yarn 90 is maintained in a tensioned state. The calibration object 30 may be a weight, or may be other object with known weight, or may be a tension meter.

FIG. 2 is a schematic diagram of a tension sensing assembly 40 according to the present invention; fig. 3 is an exploded view of a tension sensing assembly 40 in accordance with the present invention.

In the present embodiment, the tension detecting assembly 40 is used to detect the pressure of the yarn 90. As shown in fig. 2 and 3, the tension detecting assembly 40 includes a sensor holder 41, a pressure sensor 42, a tension detecting rod 43, an optical axis 44, a shaft support base 45, and a spacer 46. The pressure sensor 42 is mounted on the sensor holder 41, the tension detection rod 43 is connected with the pressure sensor 42, and the optical axis 44 is used for adjusting the direction in which the tension detection rod 43 receives the pressure of the yarn 90, so that the pressure is directed to the pressure sensor 42, thereby improving the detection accuracy of the pressure of the tension detection rod 43 on the yarn 90. The sensor holder 41 is mainly used for mounting the pressure sensor 42 and the optical axis 44. The sensor holder 41 is mounted to the frame 10. The sensor holder 41 may be a sheet metal member or an extruded profile member, and may have a hollow shape, and the pressure sensor 42 may be installed inside the sensor holder 41. The pressure sensor 42 has a mounting portion 421 connected to the sensor holder 41 and a sensing portion 422 for sensing pressure. A spacer 46 for adjusting the distance between the pressure sensor 42 and the sensor holder 41 is provided between the mounting portion 421 of the pressure sensor 42 and the sensor holder 41. The distance between the pressure sensor 42 and the sensor holder 41 can be adjusted by adjusting the thickness of the spacer 46. The tension detecting rod 43 is connected to the sensing part 422 of the pressure sensor 42 through a sensing protrusion 431. The tension detecting bar 43 receives the pressure of the yarn 90. The yarn 90 is perpendicular to the axis of the tension sensing bar 43. The shaft support 45 is connected with the sensor holder 41, the two optical axes 44 are mounted on the shaft support 45, the axes of the two optical axes 44 and the axis of the tension detection rod 43 are parallel to each other, the two optical axes 44 are located on one side of the tension detection rod 43 close to the pressure sensor 42, and the two optical axes 44 are respectively located on both sides of the sensing protrusion 431. The two optical axes 44 are used to adjust the direction of the pressing force of the yarn 90 against the tension detecting bar 43. The two optical axes 44 are rotatable about their own axes by being supported by the shaft support base 45, and a bearing 47 for supporting the optical axes 44 may be provided on the shaft support base 45. This reduces the frictional force applied to the yarn 90, and contributes to improvement in the detection accuracy of the yarn tension. Preferably, bearings 47 for supporting the two optical axes 44 are provided on the shaft support base 45.

Fig. 4 is a schematic diagram of a tension sensing assembly 40 according to the present invention.

As shown in fig. 4, in a cross section perpendicular to the axis of the tension detecting rod 43, an outer common tangent of one of the optical axis 44 and the tension detecting rod 43, which is far from the pressure sensor 42, forms a tangent included angle α with an outer common tangent of the other optical axis 44 and the tension detecting rod 43, which is far from the pressure sensor 42, the tangent included angle α being smaller than 180 °, and an opening of the tangent included angle α facing the pressure sensor 42. Preferably, the two optical axes 44 are equal in diameter. In a cross section perpendicular to the axis of the tension detection rod 43, the center of the sensing portion 422 of the pressure sensor 42 and the axis of the tension detection rod 43 form a center line 48, and the axes of the two optical axes 44 are symmetrical with respect to the center line 48. The included angle α of the tangent is between 80 ° and 120 °, and when the included angle α of the tangent is in this range, the yarn 90 is less rubbed by the optical axis 44 or the tension detecting bar 43. Preferably, the included angle α of the tangent may be 113 °. The distance between the pressure sensor 42 and the sensor holder 41 can be adjusted by adjusting the thickness of the spacer 46, and the positional relationship between the optical axis 44 and the tension detection rod 43 is adjusted so that the included angle α of the tangent is within a suitable range. The yarn 90 forms an angle θ with the direction of the centerline 48, which may be referred to as a yarn entry angle or a yarn exit angle, and generally the angle θ is within 60 °, which helps to improve the accuracy of detecting the yarn tension. Preferably, the included angle θ may be 56 °.

In the present embodiment, the first support shaft 51 and the second support shaft 52 are both mounted to the frame 10, the axes of the first support shaft 51 and the second support shaft 52 are parallel to the axis of the tension detection rod 43, the first support shaft 51 is located on the side of the tension detection rod 43 away from the yarn spool 20, and the second support shaft 52 is located on the side of the tension detection rod 43 close to the yarn spool 20. First support shaft 51 and second support shaft 52 are rotatably coupled to frame 10 to reduce friction experienced by yarn 90. The yarn 90, the target 30, the first support shaft 51, the tension detecting assembly 40, the second support shaft 52 and the yarn reel 20 may be formed in an "M" shape. The first support shaft 51 and the second support shaft 52 may be used to control the included angle θ to be at an optimal value. In some examples, the second support shaft 52 may not be needed, the tension detection rod 43 may be disposed at a position lower than the yarn reel 20, the yarn 90 is directly connected to the tension detection assembly 40 after being drawn out from the yarn reel 20, and the yarn 90, the calibration object 30, the first support shaft 51, the tension detection assembly 40 and the yarn reel 20 may form an "N" shape. In some examples, if the tension detecting assembly 40 is installed in a posture in which the tension detecting rod 43 is directed upward, the first support shaft 51 may not be required, and the yarn 90, the calibration object 30, the tension detecting assembly 40, and the yarn reel 20 may be formed in a "Λ" shape.

Fig. 5 is a schematic flow chart of a tension calibration method involved in the present invention.

In this embodiment, the tension calibration method may include the steps of suspending the calibration object 30 from one end of the yarn 90 to generate a tension in the yarn 90 in accordance with the weight of the calibration object 30 (step S1); acquiring a pressure value detected by the pressure sensor 42 included in the tension detection assembly 40 (step S2); the pressure value is calibrated as the weight value of the calibration object 30 (step S3).

In step S1, after the yarn 90 is drawn out from the yarn reel 20, the yarn 90 is sequentially wound around the side of the second support shaft 52 away from the ground, the side of the tension detection rod 43 close to the ground, and the side of the first support shaft 51 away from the ground, and then the calibration object 30 is suspended from one end of the yarn 90, so that the yarn 90 generates a tension corresponding to the weight of the calibration object 30. Preferably, when the yarn 90 is wound around the side of the tension detecting rod 43 close to the ground, the yarn 90 is wound around the side of the two optical axes 44 close to the ground, and the included angle θ is within 60 °. Further, the thickness of the shim 46 is adjusted, i.e., the shim 46 having a more appropriate thickness is replaced or added, so that the included angle of the tangent lines is between 80 ° and 120 °. Therefore, the detection precision of the pressure sensor 42 on the yarn pressure can be improved, and the tension calibration precision can be improved. In addition, the tension detecting bar 43 has a certain length, and a plurality of yarns 90 are generally uniformly distributed along the axial direction of the tension detecting bar 43 during the weaving process. To improve the tension calibration accuracy, the yarn 90 may be as close to the center of the tension detection bar 43 as possible. In other examples, the yarn 90 may not be drawn from the yarn spool 20, but the yarn 90 may be tied to the frame 10 near the yarn spool 20. Further, instead of the yarn 90, a rope similar to the yarn 90 may be used in the calibration.

In step S2, a pressure value detected by the pressure sensor 42 may be obtained through a control module (not shown) and a display instrument (not shown) connected to the pressure sensor 42. The connection and control of the control module and display instrument to the pressure sensor 42 may be by existing, mature pressure sensor measurement techniques.

In step S3, the pressure value is calibrated by the control module as the weight value of the calibration object 30. The display instrument may be a touch screen on which the pressure value is set to the weight value of the calibration object 30. For example, if the weight value of the calibration object 30 is 1kg and the pressure value detected by the pressure sensor 42 is 1.5kg, the yarn tension value displayed on the touch screen before calibration is 1.5kg, and the yarn tension value can be set to 1kg through the touch screen at the time of calibration. The algorithm comprised by the control module can convert the pressure values detected by the pressure sensor 42 during the calibrated textile production process into corresponding yarn tension values.

Figure 6 is a schematic representation of the relationship of yarn pressure to tension involved in the present invention.

As shown in fig. 6, the pressure value detected by the pressure sensor 42 is taken as the X axis, the tension of the yarn 90 is taken as the Y axis, the pressure applied to the yarn 90 is in a proportional relationship with the tension, and the equation Y is kx, and k is a proportional coefficient. k may be obtained by calibration. During the calibration process, assuming that the weight value of the calibration object 30 is G1 and the corresponding pressure value is F1, k is G1/F1. For the operator performing the calibration, to calibrate the pressure value to the weight value of the calibration object 30, i.e. to assign a value to k, y is (G1/F1) ×. After calibration is completed, in the textile production process, assuming that the tension of the yarn 90 is G2 and the pressure value detected by the pressure sensor 42 is F2, G2 is (G1/F1) × F2, and after calculation by the calculation system, the tension of the yarn 90 is seen by a production operator through a display instrument.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.