Device for measuring yarn tension

Abstract

The invention discloses a device for measuring yarn tension, which comprises a ceramic rod for yarn passing and yarn tension bearing, a swing assembly and a sensing element, the tail end of the ceramic rod is elastically and fixedly connected with the swing assembly through an elastic sheet, an inductor is carried at the tail end of the ceramic rod, and the sensing element is suspended at a position opposite to the inductor. When the porcelain rod changes under the tension of the yarn, the porcelain rod carries the inductor to generate displacement in the elastic deformation direction of the elastic piece, and the induction element is used for detecting the displacement variation of the inductor.

Description

Technical Field

[0001] The invention belongs to the technical field of yarn winding, and in particular relates to a device for measuring yarn tension. Background Art

[0002] There are many yarn tension measuring devices on the market, but most of them are suitable for flat knitting machines. The yarn load on the winding machine is relatively smaller, which puts higher demands on the tension measuring device on it. For example, the corresponding accuracy requirements are relatively high, the size should be as small as possible, the stability should be high, the service life should be long, etc. Summary of the invention

[0003] The purpose of the invention is to provide a device for measuring yarn tension, which is used for measuring the tension of yarn in real time and can be suitable for measuring the tension of yarn on a winding machine.

[0004] The technical solution adopted by the present invention to solve its technical problem is to propose a device for measuring yarn tension, including a porcelain rod for passing yarn and bearing yarn tension, a swinging assembly, and a sensing element. The tail end of the porcelain rod is elastically fixed to the swinging assembly through a spring sheet, and the tail end of the porcelain rod is equipped with a sensing body. The sensing element is suspended at a position facing the sensing body. When the porcelain rod is affected by the change in the tension of the yarn, the porcelain rod carries the sensing body and produces a displacement in the direction of the elastic deformation of the spring sheet. The sensing element is used to detect the displacement change of the sensing body.

[0005] It also includes a main control board, which is electrically connected to the sensing element. The main control board calculates the tension of the yarn according to the displacement change detected by the sensing element.

[0006] Furthermore, the yarn passes over the front end of the porcelain rod, and the tensioned yarn presses down the porcelain rod so that the spring piece is always in a state of elastic deformation.

[0007] Furthermore, the spring sheet includes a first horizontal elastic sheet and a second elastic sheet, the left ends of the first elastic sheet and the second elastic sheet are fixedly connected to the swing assembly, the right ends of the first elastic sheet and the second elastic sheet are fixedly connected to the porcelain rod, and the first elastic sheet is located directly above the second elastic sheet, so that when the porcelain rod is subjected to the external force exerted by the yarn, the porcelain rod is displaced in a horizontal posture.

[0008] Furthermore, a base is provided at the tail end of the porcelain rod, the porcelain rod is vertically arranged in front of the base, the swing assembly is located on one side of the base and is fixed to the base through the spring sheet; the sensing element is provided on the other side of the base, and the sensing body is mounted on the base facing the sensing element.

[0009] Furthermore, the swing assembly includes a vertical support, which is located on the left side of the base. The support and the base are elastically fixed via the spring sheet, so that the base carries the porcelain rod and is suspended on the right side of the support under the elastic support of the spring sheet.

[0010] Furthermore, the swing assembly also includes a base, which is located directly below the support and the base. A vertical downward limiting shaft is mounted directly below the base. A shaft sleeve is mounted directly below the base opposite to the base, and the lower end of the limiting shaft is suspended in the shaft sleeve.

[0011] Furthermore, an elastic distance is provided between the base and the sleeve, and the elastic distance is used to limit a measuring range of the yarn tension.

[0012] Furthermore, it also includes a shell, which includes a vertical bottom shell and a yarn passing shell, the yarn passing shell is provided with a groove for passing the yarn, the groove includes a first side wall and a second side wall, the first side wall covers the bottom shell, and the second side wall and the first side wall are used for passing the yarn.

[0013] Furthermore, the swing assembly, the rear end of the porcelain rod and the sensing element are sealed in the bottom shell by the first side wall, and a through hole is opened on the first side wall for the porcelain rod to pass through; when the porcelain rod does not pass through the yarn, the distance between the lower inner wall of the through hole and the porcelain rod is at least equal to the elastic distance.

[0014] Furthermore, ceramic rings are provided at both ends of the groove, and the yarn passes through the ceramic ring at the yarn input end, the ceramic rod, and the ceramic ring at the yarn output end in sequence, and the lowest point of the through hole is higher than the lowest point of the ceramic rings on both sides.

[0015] The beneficial effects of the present invention are: The present invention proposes a device for measuring yarn tension. The tensioned yarn applies force to a porcelain rod, causing the porcelain rod and a sensing body to be displaced synchronously. The displacement change of the sensing body is detected by a sensing element, and the tension of the yarn is characterized by the displacement change. The specific value of the yarn tension is calculated based on the displacement change.

[0016] A main control board can be mounted in the shell, the sensing element is electrically connected to the main control board, and the main control board calculates the specific value of the yarn tension based on the displacement variable.

[0017] The porcelain rod of the present application achieves multi-point elastic support through springs, so that when the porcelain rod is displaced by the force applied by the yarn, the porcelain rod always maintains a horizontal posture. The displacement change of the sensor body more directly feeds back the change in yarn tension, thereby improving the accuracy of yarn tension detection.

[0018] The limiting structure is arranged between the porcelain rod and the swinging assembly of the present application, and the applicable range of the yarn tension detection can be set to make the yarn tension detection reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. For those of ordinary skill in the art, other drawings can be obtained from these drawings without paying creative work.

[0020] Figure 1 is a structural diagram of a device for measuring yarn tension according to an embodiment of the present invention; Figure 2 This is a disassembled diagram of a device for measuring yarn tension according to an embodiment of the present invention; Figure 3 is the path diagram of the yarn.

[0021] Figure 4 is a structural diagram of the swing assembly; Figure 5 is a cross-sectional view of the swing assembly; Figure 6 A schematic diagram of the swing.

[0022] In the figure: 1. Shell; 2. Swinging assembly; 3. Sensing element; 4. Ceramic rod; 5. Limiting shaft; 6. Bushing; 7. Yarn; 11. Bottom shell; 12. Yarn passing shell; 13. Main control board; 14. Ceramic ring; 21. Support; 22. Shrapnel; 23. Sensing body; 24. Base; 25. Jacket; 31. Sensing seat; 41. Base. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the design orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0024] The present invention provides a device for measuring yarn tension. Figure 1-Figure 6It mainly includes a porcelain rod 4 for passing yarn and bearing the tension of the yarn 7, a swing component 2, and a sensing element 3. The tail end of the porcelain rod 4 is elastically fixed to the swing component 2 through a spring piece 22. The tail end of the porcelain rod 4 carries a sensing body 23. The sensing element 3 is suspended at a position facing the sensing body 23. When the tension of the yarn 7 changes on the porcelain rod 4, the porcelain rod 4 carries the sensing body 23 and displaces in the direction of the elastic deformation of the spring piece 22. The sensing element 3 is used to detect the displacement change of the sensing body 23.

[0025] In the present application, the yarn 7 passes over the porcelain rod 4 , specifically, it passes over the top of the front end of the porcelain rod 4 , and the tensioned yarn 7 applies downward pressure to the porcelain rod 4 .

[0026] During the winding process, the yarn 7 should be in a tensioned state. Correspondingly, the tensioned yarn 7 presses down the porcelain rod 4 so that the spring piece 22 is always in a state of elastic deformation. At this time, the porcelain rod 4 is displaced downward, and the displacement change represents the real-time tension of the yarn 7.

[0027] In the present application, a sensor 23 is mounted at the tail end of the porcelain rod 4, and a sensor element 3 is provided to detect the displacement change of the sensor 23. It can be seen that the specific value of the tension of the yarn 7 is calculated based on the detection data.

[0028] Specifically, the induction body 23 may be a magnetic steel, and the induction element 3 may be a Hall element, and the Hall element and the magnetic steel are arranged correspondingly, such as Figure 6 As shown in the figure, the Hall element can detect the displacement change of the magnetic steel.

[0029] A main control board 13 may be configured, and a Hall element may be mounted on the main control board 13 , so that the main control board 13 calculates the specific value of the tension of the yarn 7 according to the detection data of the Hall element.

[0030] In the present application, a base 41 is provided at the tail end of the porcelain rod 4, the porcelain rod 4 is vertically arranged in front of the base 41, the swing assembly 2 is located on one side of the base 41 and is fixed to the base 41 through a spring 22; the sensing element 3 is arranged on the other side of the base 41, and the sensing body 23 is mounted on the base 41 facing the sensing element 3.

[0031] For example, the swing assembly 2 can be located on the left side of the base 41, and the sensing element 3 can be located on the right side of the base 41. The sensing body 23 carried on the base 41 can be oriented toward the sensing element 3. Figure 5 as shown in .

[0032] In a specific embodiment, the swing assembly 2 has a vertical support 21, which is located on the left side of the base 41. The support 21 and the base 41 are elastically fixed via a spring 22, so that the base 41 carrying the porcelain rod 4 is elastically supported by the spring 22 and suspended on the right side of the support 21.

[0033] When the yarn 7 applies pressure on the front end of the porcelain rod 4, the front and rear ends of the porcelain rod 4 will be subjected to uneven force and deflected, that is, the front end tilts downward to a greater extent and the rear end tilts downward to a lesser extent. This causes the displacement change of the base 41 to be unable to fully reflect the tension of the yarn 7.

[0034] Based on this, the elastic fixation of the porcelain rod 4 should ensure that after the front end of the porcelain rod 4 is subjected to force, the entire porcelain rod 4 should produce a displacement change in a translational manner rather than a deflection manner.

[0035] In a specific embodiment, the spring sheet 22 may include multiple elastic sheets, which together connect the base 41 and the support 21, while ensuring elasticity in the vertical direction and limiting the deflection that may occur in the horizontal direction, so that when a single end of the porcelain rod 4 is subjected to force, it can still be displaced in a horizontal posture, that is, it can be translated up and down in the vertical direction.

[0036] For details, please refer to Figure 4 Taking two elastic sheets as an example, the spring sheet 22 includes a first horizontal elastic sheet and a second elastic sheet. The left ends of the first elastic sheet and the second elastic sheet are fixedly connected to the swing assembly 2, and the right ends of the first elastic sheet and the second elastic sheet are fixedly connected to the porcelain rod 4. The first elastic sheet is located directly above the second elastic sheet, so that when the porcelain rod 4 is subjected to the external force applied by the yarn 7, the porcelain rod 4 is displaced in a horizontal posture.

[0037] The two elastic sheets can have the same elasticity and length, and are connected at upper and lower positions. The two elastic sheets elastically support the base 41 together to suspend the porcelain rod 4. When the yarn 7 presses down on the porcelain rod 4, it can be displaced.

[0038] When in use, the yarn 7 is on the circumferential surface of the front end of the porcelain rod 4. The tensioned yarn 7 applies downward pressure to the porcelain rod 4, causing the porcelain rod 4 to drive the base 41 to move downward under the limit guide of the limit shaft 5. The magnet on the base 41 will also have a downward displacement relative to the detection surface of the Hall element. The magnitude of the force applied by the yarn 7 determines the displacement distance (displacement change). When the force applied by the yarn 7 becomes smaller or removed, under the action of the double spring sheets, the base 41 carrying the magnet will be restored to the original position, that is, the spring sheet 22 is in a horizontal state.

[0039] In order to limit the shaking of the porcelain rod 4 under the action of the spring 22, the base 41 can be limited so that it can be displaced in the vertical direction as much as possible; the base 41 can be limited based on the structural support 21 at the support end of the spring 22, and a limiting structure can be extended on the swing component 2 to cooperate with the support 21 to limit the base 41 to prevent it from shaking.

[0040] In a specific embodiment, the swing assembly 2 also includes a base 24, which is located directly below the support 21 and the base 41. A vertically downward limiting shaft 5 is mounted directly below the base 41. A shaft sleeve 6 is mounted directly below the base 24 opposite to the base 41, and the lower end of the limiting shaft 5 is suspended in the shaft sleeve 6.

[0041] Exemplarily, the inner diameter of the sleeve 6 is slightly larger than the diameter of the limiting shaft 5 , so that the limiting shaft 5 is suspended in the sleeve 6 , and the sleeve 6 is used to guide and limit the up and down displacement of the limiting shaft 5 .

[0042] Based on the connection method of the spring piece 22, the base 41 located at the front end of the spring piece 22 may produce an arc-shaped displacement trajectory. Sufficient space should be reserved for the inner diameter of the sleeve 6 so that the limit shaft 5 does not contact the inner wall of the sleeve 6 during the guiding process, and the external force exerted by the yarn 7 on the porcelain rod 4 is not offset by other forces, so that the displacement change remains pure and the detection accuracy is ensured.

[0043] In an embodiment of the present application, a sleeve 25 can be set between the base 24 and the sleeve 6, the sleeve 6 is placed on the upper part of the sleeve 25, and the ports of the two are flush. The depth of the sleeve 25 is greater than the axial length of the sleeve 6, which can provide a larger displacement space for the limiting shaft 5.

[0044] The base 41 is suspended above the base 24, and the distance between the base 41 and the sleeve 6 can be an elastic distance, that is, the maximum displacement of the base 41 is the elastic distance. The measurement range of the tension of the yarn 7 can be limited based on the elastic distance, giving the device of the present application a scope of application.

[0045] In the embodiment of the present application, the swing assembly 2 , the sensing element 3 , and the porcelain rod 4 can be integrated in the housing 1 in the above-mentioned relative position relationship, and the main control board 13 cooperating with the sensing element 3 can also be integrated in the housing 1 .

[0046] In an embodiment of the present application, the shell 1 includes a vertical bottom shell 11 and a yarn passing shell 12. The yarn passing shell 12 is provided with a groove for passing yarn. The groove includes a first side wall and a second side wall. The first side wall covers the bottom shell 11, and the second side wall and the first side wall are used for passing yarn.

[0047] The swing assembly 2, the rear end of the porcelain rod 4 and the sensing element 3 are sealed in the bottom shell 11 by the first side wall. A through hole is opened on the first side wall for the porcelain rod 4 to pass through. The porcelain rod 4 passes through the through hole and is placed in the recess. The porcelain rod 4 does not contact the second side wall, so that the yarn 7 applies force to the porcelain rod 4 so that the porcelain rod 4 can move freely.

[0048] When the porcelain rod 4 passes through the yarn, the porcelain rod 4 moves downward in the through hole; when the porcelain rod 4 does not pass through the yarn, the porcelain rod 4 may preferably be located in the center or upper part of the through hole, and the distance between the lower inner wall of the through hole and the porcelain rod 4 is at least equal to the elastic distance. Within the applicable range, the porcelain rod 4 has sufficient displacement space.

[0049] Exemplarily, the through hole may be a large circular hole or a strip hole; when the through hole is a strip hole, the strip hole is vertically opened, and the width of the strip hole may be greater than the diameter of the porcelain rod 4 .

[0050] The yarn passing path of the yarn 7 can be set based on the groove, and ceramic rings 14 are set at both ends of the groove. The yarn 7 passes through the ceramic ring 14 at the yarn input end, the ceramic rod 4, and the ceramic ring 14 at the yarn output end in turn, and the lowest point of the through hole is higher than the lowest point of the ceramic rings 14 on both sides, so that the tensioned yarn 7 can exert downward pressure on the ceramic rod 4.

[0051] Of course, when the yarn 7 passes through the porcelain rod 4, the relative height of the porcelain ring 14 and the through hole can be adjusted synchronously; for example, when the yarn 7 passes through the lower side of the porcelain rod 4, the lowest point of the porcelain ring 14 can be higher than the highest point of the through hole.

[0052] In a specific embodiment, the Hall element can be fixed on the induction seat 31, and the induction seat 31 is installed on the main control board 13. The induction seat 31 limits the support of the Hall element and supports the detection surface of the Hall element to the required position; illustratively, the main control board 13 is used as the reference to make the Hall element and the swing component 2 at the same height and opposite to each other, so that the Hall element and the magnetic steel carried on the tail end of the porcelain rod 4 can be aligned and opposite to each other, such as Figure 2 As shown in , to implement real-time detection.

[0053] When packaging on the bottom shell 11, the main control board 13 is assembled first, and then the sensor seat 31 is installed on the main control board 13, the position of the sensor element 3 is determined, and then the swing assembly 2 is assembled on the bottom shell 11, and the porcelain rod 4 is in a suspended state, and the first side wall of the yarn shell 12 cooperates with the bottom shell 11 for packaging, wherein the porcelain rod 4 passes through the through hole on the first side wall and is located in the groove for yarn passing.

[0054] As a feasible embodiment, a reset button (for zeroing) can be provided on the main control board 13, the sensing element 3 is located on the front side of the main control board 13, the reset button can be located on the back side of the main control board 13, and a small hole can be opened on the bottom shell 11 to expose the reset button.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0056] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation modes, and it cannot be determined that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A device for measuring yarn tension, characterized in that: The invention comprises a porcelain rod (4) for passing yarn and bearing the tension of the yarn (7), a swing assembly (2), and a sensing element (3). The tail end of the porcelain rod (4) is elastically fixed to the swing assembly (2) via a spring sheet (22). The tail end of the porcelain rod (4) carries a sensing body (23). The sensing element (3) is suspended at a position facing the sensing body (23). When the tension of the yarn (7) changes on the porcelain rod (4), the porcelain rod (4) carries the sensing body (23) and generates displacement in the direction of elastic deformation of the spring sheet (22). The sensing element (3) is used to detect the displacement change of the sensing body (23).

2. A device for measuring yarn tension according to claim 1, characterized in that: The yarn (7) passes over the front end of the porcelain rod (4), and the tensioned yarn (7) presses down the porcelain rod (4) so ​​that the spring piece (22) is always in an elastically deformed state.

3. A device for measuring yarn tension according to claim 1, characterized in that: The spring sheet (22) comprises a first horizontal elastic sheet and a second horizontal elastic sheet. The left ends of the first elastic sheet and the second elastic sheet are both fixedly connected to the swing assembly (2). The right ends of the first elastic sheet and the second elastic sheet are both fixedly connected to the porcelain rod (4). The first elastic sheet is located directly above the second elastic sheet, so that when the porcelain rod (4) is subjected to an external force applied by the yarn (7), the porcelain rod (4) is displaced in a horizontal posture.

4. A device for measuring yarn tension according to claim 1, characterized in that: A base (41) is provided at the tail end of the porcelain rod (4), the porcelain rod (4) is vertically arranged in front of the base (41), the swing assembly (2) is located on one side of the base (41) and is fixedly connected to the base (41) via the spring sheet (22); the sensing element (3) is provided on the other side of the base (41), and the sensing body (23) is mounted on the base (41) and faces the sensing element (3).

5. A device for measuring yarn tension according to claim 4, characterized in that: The swing assembly (2) comprises a vertical support (21), the support (21) being located on the left side of the base (41), the support (21) being elastically fixed to the base (41) via the spring sheet (22), so that the base (41) carrying the porcelain rod (4) is suspended on the right side of the support (21) by the elastic support of the spring sheet (22).

6. A device for measuring yarn tension according to claim 5, characterized in that: The swing assembly (2) further comprises a base (24), wherein the base (24) is located directly below the support (21) and the pedestal (41), a limit shaft (5) pointing vertically downward is mounted directly below the pedestal (41), and a shaft sleeve (6) is mounted directly below the base (24) facing the pedestal (41), and the lower end of the limit shaft (5) is suspended in the shaft sleeve (6).

7. A device for measuring yarn tension according to claim 6, characterized in that: An elastic spacing is provided between the base (41) and the shaft sleeve (6), and the elastic spacing is used to limit a measuring range of the tension of the yarn (7).

8. A device for measuring yarn tension according to claim 7, characterized in that: The invention also comprises a shell (1), wherein the shell (1) comprises a vertical bottom shell (11) and a yarn passing shell (12), wherein the yarn passing shell (12) is provided with a groove for passing yarn, wherein the groove comprises a first side wall and a second side wall, wherein the first side wall covers the bottom shell (11), and the space between the second side wall and the first side wall is for passing yarn.

9. A device for measuring yarn tension according to claim 8, characterized in that: The swing assembly (2), the rear end of the porcelain rod (4) and the sensing element (3) are sealed in the bottom shell (11) by the first side wall. The first side wall is provided with a through hole for the porcelain rod (4) to pass through. When the porcelain rod (4) does not pass through the yarn, the distance between the lower inner wall of the through hole and the porcelain rod (4) is at least equal to the elastic distance.

10. A device for measuring yarn tension according to claim 9, characterized in that: Ceramic rings (14) are provided at both ends of the groove, and the yarn (7) passes through the ceramic ring (14) at the yarn entry end, the ceramic rod (4), and the ceramic ring (14) at the yarn exit end in sequence, and the lowest point of the through hole is higher than the lowest points of the ceramic rings (14) at both sides.

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