Yarn tensioner for warp knitting machine

Abstract

The yarn tensioner for the warp knitting machine comprises a base and further comprises a stand column, a sensor base, a pressure sensor, a tension platform, a controller, a displacement adjusting mechanism and a yarn guide ball, the stand column is perpendicularly and fixedly connected to the side wall of the base, the sensor base is fixed to the lower portion of the stand column, the pressure sensor is integrated in the sensor base, and the tension platform is connected with the controller. The tension platform is assembled on the sensor base in a sliding mode through a linear guide rail and makes contact with the pressure sensor to form a pressure feedback interface, the tension platform is used for bearing yarn, the displacement adjusting mechanism is movably arranged on the base through a sliding rail, and the yarn guide ball is rotationally assembled at the tail end of the displacement adjusting mechanism. The displacement adjusting mechanism can drive the yarn guide ball to apply controllable radial pressure to the yarn so as to adjust the tension of the yarn, and the controller is arranged on the base, electrically connected with the pressure sensor and used for controlling the displacement adjusting mechanism to drive the yarn guide ball to adjust the position.

Description

Technical Field

[0001] This utility model relates to the technical field of yarn tensioners for warp knitting machines, and particularly to a yarn tensioner for warp knitting machines. Background Technology

[0002] In warp knitting, precise control of yarn tension directly affects fabric quality and production efficiency. Traditional yarn tension adjustment devices mostly use mechanical counterweights or spring structures to achieve passive tension compensation, which has technical defects such as dynamic response lag and insufficient adjustment accuracy.

[0003] Specifically, the tension adjustment mechanism lacks a real-time feedback mechanism and cannot actively compensate for instantaneous tension fluctuations during yarn travel, which can easily lead to yarn slack or overload breakage. Especially under high-speed weaving conditions, the wear problem on the yarn surface caused by friction loss in the existing yarn guiding mechanism is particularly prominent, which directly affects the appearance quality of the finished fabric. Utility Model Content

[0004] The purpose of this invention is to provide a yarn tensioner for a warp knitting machine that can adjust the tension of the yarn.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a yarn tensioner for a warp knitting machine, comprising: a base,

[0006] It also includes: a column, a sensor base, a pressure sensor, a tension platform, a controller, a displacement adjustment mechanism, and a yarn guide ball;

[0007] The column is vertically fixed to the side wall of the base, and the sensor base is fixed to the lower part of the column. The sensor base integrates a pressure sensor. The tension platform is slidably mounted on the sensor base via a linear guide rail and contacts the pressure sensor to form a pressure feedback interface. The tension platform is used to support the yarn. The displacement adjustment mechanism is movably mounted on the base via a slide rail. The yarn guide ball is rotatably mounted at the end of the displacement adjustment mechanism. The displacement adjustment mechanism can drive the yarn guide ball to apply controllable radial pressure to the yarn, thereby adjusting the yarn tension. The controller is located on the base and electrically connected to the pressure sensor to control the displacement adjustment mechanism to adjust the position of the drive ball.

[0008] Preferably, the tension platform includes: a guide bracket that forms a vertical sliding fit with the sensor base and a pressure application module that is assembled on the guide bracket by detachable fasteners; the working surface of the pressure application module is adapted to the detection end face of the pressure sensor.

[0009] Preferably, the pressure module integrates a yarn guide channel, which is a directional guiding structure extending along the yarn travel direction to limit the yarn running trajectory.

[0010] Preferably, the yarn guide channel is pivotally connected to a guide wheel, and the guide wheel is provided with a yarn limiting groove around its circumference to reduce the coefficient of friction between the yarn and the yarn guide channel through rolling contact.

[0011] Preferably, the yarn guide channel is provided with a fixed rolling bearing, the inner ring of which is interference-fitted with the guide wheel, and the friction loss between the guide wheel and the channel is controlled through the rolling friction pair structure.

[0012] Preferably, the yarn guide ball is provided with a linear guide groove in the circumference, which enables yarn trajectory control.

[0013] Preferably, a support base is fixedly installed on the top of the column, and the base has multiple threaded holes spaced apart along the vertical direction. An adjusting screw is rotatably installed on the column, and the end of the adjusting screw forms a threaded engagement with the threaded hole.

[0014] Preferably, the displacement adjustment mechanism includes a lifting seat and an electric push rod; the lifting seat is slidably engaged with the base in a lifting manner, and the cylinder of the electric push rod is fixedly mounted on the top of the lifting seat, with its extension and retraction output end fixedly connected to the lifting seat to form the lifting motion of the lifting seat.

[0015] The beneficial effects of this utility model compared with the prior art are as follows:

[0016] 1. By using a sliding contact design between the pressure sensor and the tension platform, a real-time pressure monitoring interface is constructed. Combined with the closed-loop control of the displacement adjustment mechanism by the controller, instantaneous detection and dynamic compensation of yarn tension are achieved, significantly improving the tension control accuracy and response speed.

[0017] 2. The guide wheels and rolling bearings installed in the yarn guide channel change the yarn contact method from sliding friction to rolling friction, effectively reducing yarn travel resistance and surface wear, while extending the service life of the yarn guide mechanism.

[0018] 3. The tension platform's pressure module adopts a detachable assembly structure, facilitating quick replacement of compatible components according to yarn specifications; the column height adjustment mechanism achieves multi-position fixing through threaded engagement, adapting to different installation scenarios and improving equipment versatility.

[0019] 4. The linear guide groove of the yarn guide ball and the directional guiding structure of the yarn guide channel work together to ensure that the yarn running trajectory is stable and controllable, reduce tension fluctuations caused by path deviation, and ensure the consistency of the weaving process.

[0020] 5. The displacement adjustment mechanism uses an electric push rod to drive the lifting seat, which, combined with the controller, enables precise adjustment of the radial pressure of the yarn guide ball, forming a closed-loop feedback between the tension set value and the actual detection value, reducing the frequency of manual intervention. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram showing the position of the linear guide groove in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram showing the position of the yarn limiting groove in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram showing the position of the rolling bearing in one embodiment of the present invention.

[0025] Reference numerals: 1. Base; 2. Column; 3. Sensor base; 4. Pressure sensor; 5. Tension platform; 6. Controller; 7. Displacement adjustment mechanism; 8. Yarn guide ball; 9. Guide bracket; 10. Pressure module; 11. Yarn guide channel; 12. Guide wheel; 13. Yarn limiting groove; 14. Rolling bearing; 15. Linear guide groove; 16. Support seat; 17. Threaded hole; 18. Adjusting screw; 19. Lifting seat; 20. Electric push rod. Detailed Implementation

[0026] The following description is only a preferred embodiment of the present utility model. The scope of protection is not limited to this embodiment. All technical solutions that fall within the scope of the present utility model should be protected by the present utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present utility model should also be considered within the scope of protection of the present utility model.

[0027] It should be noted that in this document, relational terms such as first and second, or "connecting plate one, connecting plate two," are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0028] The directional terms mentioned in this embodiment, such as "up," "down," "left," and "right," are merely used to help those skilled in the art understand the relationships between various features or parts in conjunction with the accompanying drawings.

[0029] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figures 1 to 4 A yarn tensioner for a warp knitting machine, comprising: a base,

[0031] It also includes: a column, a sensor base, a pressure sensor, a tension platform, a controller, a displacement adjustment mechanism, and a yarn guide ball;

[0032] The column is vertically fixed to the side wall of the base, and the sensor base is fixed to the lower part of the column. The column is used to support the sensor base. A support seat is fixedly installed on the top of the column. The base has multiple threaded holes spaced at intervals along the vertical direction. An adjusting screw is rotatably installed on the column. The end of the adjusting screw is threaded into the threaded hole. By adjusting the screw and the threaded hole, the vertical position of the column on the base can be adjusted. The column is cylindrical.

[0033] The sensor base integrates a pressure sensor. The tension platform is slidably mounted on the sensor base via a linear guide rail and contacts the pressure sensor to form a pressure feedback interface. When the yarn enters the tension platform, the yarn applies force to the tension platform, which in turn applies force to the pressure sensor. The pressure sensor senses the pressure and transmits it to the controller, which is electrically connected and fixed to the base. The controller controls the displacement adjustment mechanism set on the base to drive the rotation of the yarn guide ball connected to the displacement adjustment mechanism, thereby achieving the adjustment of the yarn tension by the yarn guide ball.

[0034] It is worth mentioning that the tension platform includes: a guide bracket that forms a vertical sliding fit with the sensor base and a pressure module mounted on the guide bracket by a detachable fastener; the working surface of the pressure module is adapted to the detection end face of the pressure sensor, and the fastener is a bolt, which is rotatably connected to the pressure module and threaded to the guide bracket at one end, making it easy for personnel to replace the pressure module; the displacement adjustment mechanism includes: a lifting seat and an electric push rod; the lifting seat forms a sliding fit with the base in a lifting manner, and the cylinder of the electric push rod is fixed to the top of the lifting seat, and its telescopic output end is fixed to the lifting seat to form the lifting motion of the lifting seat; the lifting seat is rotatably connected to the yarn guide ball to drive the lifting seat to rise and fall.

[0035] Specifically, the pressure module integrates a yarn guide channel, which is a directional guiding structure extending along the yarn travel direction to limit the yarn's trajectory. The yarn guide channel is pivotally connected to a guide wheel, which has a yarn limiting groove around its circumference. The friction coefficient between the yarn and the yarn guide channel is reduced through rolling contact. A fixed rolling bearing is installed inside the yarn guide channel, and the inner ring of the bearing forms an interference fit with the guide wheel. The friction loss between the guide wheel and the channel is controlled through the rolling friction pair structure.

[0036] Specifically, the yarn guide ball is provided with a linear guide groove in the circumference, which realizes yarn trajectory control and thus guides the yarn.

[0037] The principle of this invention is as follows: By sensing changes in yarn tension in real time and triggering adaptive displacement of the mechanical structure, closed-loop dynamic balance adjustment of yarn tension is achieved. Specifically, when the yarn travels, the applied tension acts on the tension platform. This platform transmits pressure to an integrated pressure sensor, forming an instantaneous quantitative perception of the yarn tension. The pressure signal is converted into a displacement drive command by the controller. The spatial position of the guide ball is precisely adjusted by the electric push rod, changing the yarn path length and contact angle, thereby compensating for tension fluctuations in the reverse direction. The combination design of the modular pressure application component and the detachable guide wheel enables adaptability adjustment for different yarn specifications. The rolling bearing and guide wheel in the yarn guide channel form a low-friction transmission pair, which maintains the stability of the yarn trajectory and reduces fiber wear. The entire system, through the synergistic action of the column height adjustment mechanism and the guide ball displacement mechanism, constructs a control system that ensures constant yarn tension while effectively reducing tension drift caused by mechanical wear, significantly improving tension control accuracy and equipment lifespan.

[0038] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A yarn tensioner for a warp knitting machine, comprising: Base (1), Its features are, It also includes: a column (2), a sensor base (3), a pressure sensor (4), a tension platform (5), a controller (6), a displacement adjustment mechanism (7), and a yarn guide ball (8); The column (2) is vertically fixed to the side wall of the base (1). The sensor base (3) is fixed to the lower part of the column (2). The sensor base (3) integrates a pressure sensor (4). The tension platform (5) is slidably mounted on the sensor base (3) via a linear guide rail and contacts the pressure sensor (4) to form a pressure feedback interface. The tension platform (5) is used to support the yarn. The displacement adjustment mechanism (7) is movably mounted on the base (1) via a slide rail. The yarn guide ball (8) is rotatably mounted on the end of the displacement adjustment mechanism (7). The displacement adjustment mechanism (7) can drive the yarn guide ball (8) to apply controllable radial pressure to the yarn, thereby adjusting the yarn tension. The controller (6) is set on the base (1) and electrically connected to the pressure sensor (4) to control the displacement adjustment mechanism (7) to drive the guide ball to adjust its position.

2. The yarn tensioner for a warp knitting machine according to claim 1, characterized in that, The tension platform (5) includes: a guide bracket (9) that forms a vertical sliding fit with the sensor base (3) and a pressure application module (10) that is assembled on the guide bracket (9) by a detachable fastener; the working surface of the pressure application module (10) is adapted to the detection end face of the pressure sensor.

3. A yarn tensioner for a warp knitting machine according to claim 2, characterized in that, The pressure module (10) integrates a yarn guide channel (11), which is a directional guide structure extending along the yarn travel direction and used to limit the yarn running trajectory.

4. The yarn tensioner for a warp knitting machine according to claim 3, characterized in that, The yarn guide channel (11) is pivotally connected to a guide wheel (12), and the guide wheel (12) is provided with a yarn limiting groove (13) around its circumference, which reduces the coefficient of friction between the yarn and the yarn guide channel (11) through rolling contact.

5. The yarn tensioner for a warp knitting machine according to claim 4, characterized in that, The yarn guide channel (11) is provided with a fixed rolling bearing (14). The inner ring of the bearing and the guide wheel (12) form an interference fit. The friction loss between the guide wheel (12) and the channel is controlled through the rolling friction pair structure.

6. A yarn tensioner for a warp knitting machine according to claim 1, characterized in that, The yarn guide ball is provided with a linear guide groove (15) in the circumferential direction, which realizes yarn trajectory control.

7. The yarn tensioner for a warp knitting machine according to claim 1, characterized in that, The column (2) is fixedly installed with a support base (16) on top. The base (1) has multiple threaded holes (17) spaced apart in the vertical direction. The column (2) is rotatably installed with an adjusting screw (18). The end of the adjusting screw (18) is threaded into the threaded hole (17).

8. A yarn tensioner for a warp knitting machine according to claim 1, characterized in that, The displacement adjustment mechanism (7) includes: a lifting seat (19) and an electric push rod (20); the lifting seat (19) is slidably engaged with the base (1) in a lifting manner, and the cylinder of the electric push rod (20) is fixed on the top of the lifting seat (19), and its extension output end is fixedly connected to the lifting seat (19) to form the lifting movement of the lifting seat (19).

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