A tension compensation system in a tension adjustment process

Abstract

The utility model relates to yarn tension adjusting equipment technical field, especially yarn tension compensation system in the process of tension adjustment, a yarn tension compensation system in the process of tension adjustment, including winding detection center, feed yarn detection center and PLC collaborative control terminal, the winding detection center and this feed yarn detection center all electric connection has several tension sensing devices, and the winding detection center and this feed yarn detection center are connected through data interface, and a winding detection center and a feed yarn detection center correspond to form a group of collaborative control nodes, and the PLC collaborative control terminal is electrically connected with a plurality of collaborative control nodes. The utility model discloses through detecting the tension numerical value before yarn winding process and the tension numerical value of yarn end, calculates the difference between both and set value, thereby control compensation mechanism corresponding to tighten or relax yarn, solves with the problem that the friction gradually of later period between guide pulley gradually becomes big along with the gradually lengthening of guide pulley use time.

Description

Technical Field

[0001] This utility model relates to the field of yarn tension adjustment technology, and in particular to a tension compensation system in the tension adjustment process. Background Technology

[0002] Warp knitting machines are a major type of fabric processing machinery used to feed one or more sets of parallel warp yarns into all the working needles of the machine in the warp direction, forming loops to create knitted fabrics. The knitted fabrics produced by warp knitting machines are widely loved by consumers. The tension compensation mechanism is a key functional component of warp knitting machines. The tension compensation mechanism is used to adjust the tension of the warp yarns to keep it within the range that conforms to the warp knitting process. In the current technology, digital methods are commonly used to accurately monitor the yarn tension and achieve rapid mass production of fabrics.

[0003] During the process of yarn being wound up and fed to the warp knitting machine via tension regulating guide rollers, friction between the tension regulating guide rollers will cause the yarn to tighten, increasing the yarn tension. If the actual production requirement for the yarn tension is 50g, and the winding guide rollers generate a cumulative friction of 10g, then the tension controller only needs to provide 40g of tension. However, as the guide rollers are used for a longer period of time, the friction generated will increase. If the tension controller continues to provide the same tension, the tension will exceed the set value, resulting in defective knitted products. Therefore, a tension compensation mechanism is needed to compensate for the tension. Utility Model Content

[0004] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a tension compensation system in the tension adjustment process. By setting a tension sensor on the yarn winding guide roller to detect the tension value of the yarn before the winding process and setting a tension sensor at the yarn feeder at the inlet of the braiding machine to detect the tension value at the end of the yarn, the difference between the two and the set value is calculated. This allows the calculation of the frictional force generated between the guide rollers when the yarn is winding before entering the braiding machine. This value is then input into the PLC collaborative control terminal for compensation value calculation, and the compensation mechanism is controlled to tighten or loosen the yarn accordingly. This solves the problem that the frictional force between the guide rollers gradually increases as the guide rollers are used for a longer period of time.

[0006] This utility model provides a tension compensation system in the tension adjustment process, including a winding detection center, a yarn feeding detection center, and a PLC collaborative control terminal. The winding detection center and the yarn feeding detection center are each electrically connected to several tension sensing devices. The number of tension sensing devices connected to the winding detection center is equal to and corresponds one-to-one with the number of tension sensing devices connected to the yarn feeding detection center. The winding detection center and the yarn feeding detection center are connected through a data interface. One winding detection center and one yarn feeding detection center form a set of collaborative control nodes. The PLC collaborative control terminal is electrically connected to the set of collaborative control nodes. The set-up take-up detection center, in conjunction with its corresponding tension sensing device, is used to detect the tension of multiple yarns before take-up. The set-up yarn feeding detection center, in conjunction with its corresponding tension sensing device, is used to detect the tension of the yarn entering the warp knitting machine. The data from both are communicated and transmitted to the PLC collaborative control terminal. The PLC collaborative control terminal calculates the tension value and compares it with a set threshold to calculate the specific value of tension compensation required for each yarn in each collaborative control node. For example, if the tension set value required for fabric production is 50g, and the tension of the yarn before entering the take-up guide roller is 40g, if the yarn tension value detected by the take-up detection center is 40g, but the tension value detected by the yarn feeding detection center before entering the warp knitting machine increases to 55g, it indicates that the friction force generated by the guide roller is 15g, which is greater than the actual required tension. The data is then input into the PLC collaborative control terminal for compensation value calculation.

[0007] In some embodiments, the tension sensing devices connected to the take-up detection center and the yarn feeding detection center are both 12, and the collaborative control terminal is connected to 20 sets of collaborative control nodes. Preferably, each tension sensing device can detect one yarn with tension, and one set of take-up detection center and yarn feeding detection center can simultaneously monitor 12 yarns, while the PLC collaborative control terminal can simultaneously detect 20 sets of collaborative control nodes, thereby realizing mass production of fabrics in large textile factories.

[0008] In some embodiments, the tension sensing device connected to the take-up detection center detects a first instantaneous tension value, and the tension sensing device connected to the yarn feeding detection center detects a second instantaneous tension value. The instantaneous value of the current yarn is detected by converting the tension value into electrical flux.

[0009] In some embodiments, the yarn feeding detection center stores the setpoint of the main force, the instantaneous value of the second tension, and the setpoint of the second tension, while the take-up detection center stores the instantaneous value of the first tension and the setpoint of the first tension. By comparing the instantaneous value and the setpoint, the data difference of the current yarn is obtained and then uniformly input into the PLC collaborative control terminal, and finally the tension value difference that should be compensated is obtained.

[0010] In some embodiments, the PLC collaborative control terminal is equipped with 32 data channels. The PLC collaborative control terminal also stores a first tension setting value and a second tension setting value. The PLC collaborative control terminal automatically or manually transmits data to the yarn feeding detection center and the winding detection center. The number of data channels in the PLC collaborative control terminal allows it to control up to 20 sets of collaborative control nodes. Data exchange is possible between the PLC collaborative control terminal and the collaborative control nodes, allowing for the exchange of setting value data. This data transmission process can be performed automatically or manually.

[0011] In some embodiments, a production line control terminal connected to the PLC collaborative control terminal is also included. This production line control terminal is equipped with buttons, the number of which corresponds to the number of collaborative control nodes. The producer presses the corresponding button on the production line control terminal to retrieve control data from a specific PLC collaborative control terminal. Correspondingly, the tension setting value for each yarn in each PLC collaborative control terminal can be set on the production line control terminal and input to the corresponding node via data communication. If an error occurs at a node, the error information is fed back to the production line control terminal, and an error report is displayed, showing the specific machine alarmed and the alarm history.

[0012] In some embodiments, the system further includes yarn and a compensation mechanism. The yarn is wound around the tension sensing device connected to the take-up detection center and the yarn feeding detection center in the same group. The compensation mechanism is located at the end of the yarn to control the stretching or tightening of the yarn. The yarn is wound between the tension sensing devices and its tension is adjusted by tension adjusting guide rollers before entering the warp knitting machine for weaving. The compensation mechanism at the end controls the stretching or tightening of the yarn according to corresponding instructions issued by the PLC collaborative control terminal, thereby achieving tension compensation.

[0013] In some embodiments, the tension sensing device includes a support base, a yarn guide roller assembly disposed on the support base, and an elastic tension sensor disposed on the support base and located between the yarn guide roller assemblies. The support base supports the operation of the entire sensor, while the yarn guide roller assembly guides the movement path of the yarn, allowing the yarn with a certain tension to pass through the elastic roller column that abuts against the extension block. The elastic roller column is guided to compress the elastic deformation plate through the extension plate, and the elastic deformation plate is connected to the tension detection circuit board, converting the elastic deformation generated during compression into electrical flux, thereby realizing the data detection and display of tension. The elastic deformation plate and the tension detection circuit board are fixed on the support boss, which serves to fix the elastic deformation plate and the tension detection circuit board.

[0014] In some embodiments, the elastic tension sensor includes a support boss, a tension detection circuit board, an elastic deformation plate, and an extension block. The support boss is disposed on the support base, and the tension detection circuit board and the elastic deformation plate are respectively disposed on both sides of the support boss and connected to each other. The extension block abuts against the yarn guide roller assembly and the elastic deformation plate. The specific mechanism and implementation principle of the elastic tension sensor can be found in the prior art and will not be elaborated here.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are:

[0016] This invention solves the problem of increasing friction between guide rollers as the yarn is wound up over time. It involves installing tension sensors on the yarn winding guide rollers to detect the yarn tension before winding and at the yarn feeder at the braiding machine inlet to detect the tension at the yarn end. The difference between these two values ​​and a set value is calculated to determine the friction generated between the guide rollers during winding before entering the braiding machine. This data is then input to a PLC control terminal for compensation calculation, which controls the compensation mechanism to tighten or loosen the yarn accordingly.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0018] Undoubtedly, such and other objects of this invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and illustrations.

[0019] To make the above and other objects, features and advantages of this utility model more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall process of the tension compensation system in some embodiments of this utility model;

[0024] Figure 2 This is a schematic diagram showing the connection between the tension sensing device and the winding detection center and the yarn feeding detection center in some embodiments of this utility model;

[0025] Figure 3 This is a schematic diagram showing the connection between the winding detection center, the yarn feeding detection center, and the PLC collaborative control terminal in some embodiments of this utility model;

[0026] Figure 4 This is a schematic diagram of the overall structure of the tension sensing device in some embodiments of this utility model.

[0027] Explanation of key figure labels:

[0028] 1. Winding and Receiving Inspection Center;

[0029] 2. Yarn Feeding Testing Center;

[0030] 3. PLC collaborative control terminal;

[0031] 4. Tension sensing device;

[0032] 41. Support base;

[0033] 42. Yarn guide roller assembly;

[0034] 43. Elastic tension sensor;

[0035] 431. Support boss; 432. Tension detection circuit board; 433. Elastic deformation plate; 434. Extension block;

[0036] 5. Data interface;

[0037] 6. Production line control terminal;

[0038] 7. Yarn;

[0039] 8. Compensation agencies. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0041] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0043] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Reference Figures 1-3 , Figure 1 This is a schematic diagram of the overall process of the tension compensation system in some embodiments of this utility model; Figure 2 This is a schematic diagram showing the connection between the tension sensing device and the winding detection center and the yarn feeding detection center in some embodiments of this utility model; Figure 3 This is a schematic diagram showing the connection between the winding detection center, the yarn feeding detection center, and the PLC collaborative control terminal in some embodiments of this utility model.

[0045] According to some embodiments of the present invention, the present invention provides a tension compensation system in the tension adjustment process, including a winding detection center 1, a yarn feeding detection center 2, and a PLC collaborative control terminal 3. The winding detection center 1 and the yarn feeding detection center 2 are each electrically connected to several tension sensing devices 4. The number of tension sensing devices 4 connected to the winding detection center 1 is equal to and corresponds one-to-one with the number of tension sensing devices 4 connected to the yarn feeding detection center 2. The winding detection center 1 and the yarn feeding detection center 2 are connected through a data interface 5. One winding detection center 1 and one yarn feeding detection center 2 form a set of collaborative control nodes. The PLC collaborative control terminal 3 is electrically connected to the set of collaborative control nodes. The winding detection center 1, in conjunction with its corresponding tension sensing device 4, is used to detect the tension of multiple yarns 7 before winding. The yarn feeding detection center 2, in conjunction with its corresponding tension sensing device, is used to detect the tension of the yarn 7 entering the warp knitting machine. The data from both are communicated and transmitted to the PLC collaborative control terminal 3. The PLC collaborative control terminal 3 calculates the tension value and compares it with a set threshold to calculate the specific value of tension compensation required for each yarn 7 in each collaborative control node. For example, if the required tension for fabric production is 50g, and the tension of the yarn 7 before entering the winding guide roller is 40g, if the tension value of the yarn 7 detected by the winding detection center 1 is 40g, but the tension value detected by the yarn feeding detection center 2 before entering the warp knitting machine increases to 55g, it indicates that the friction force generated by the guide roller is 15g, which is greater than the actual required tension. The data is then input to the PLC collaborative control terminal 3 for compensation value calculation.

[0046] The winding detection center 1 and the yarn feeding detection center 2 are each connected to 12 tension sensing devices 4, and the PLC collaborative control terminal 3 is connected to 20 collaborative control nodes. Preferably, each tension sensing device 4 can detect one yarn 7 with tension. One group of winding detection center 1 and yarn feeding detection center 2 can simultaneously monitor 12 yarns 7, while the PLC collaborative control terminal 3 can simultaneously detect 20 collaborative control nodes, thereby realizing mass production of fabrics in large textile factories.

[0047] The tension sensor 4 connected to the take-up detection center 1 detects a first instantaneous tension value, while the tension sensor 4 connected to the yarn feeding detection center 2 detects a second instantaneous tension value. The instantaneous value of the current yarn 7 is detected by converting the tension value into electrical flux.

[0048] The yarn feeding detection center 2 stores the setpoint of the main force, the instantaneous value of the second tension, and the setpoint of the second tension. The winding detection center 1 stores the instantaneous value of the first tension and the setpoint of the first tension. By comparing the instantaneous value and the setpoint, the data difference of the current yarn 7 is obtained and uniformly input into the PLC collaborative control terminal 3. Finally, the tension value difference that should be compensated is obtained.

[0049] The PLC collaborative control terminal 3 has 32 data channels and stores the first tension setting value and the second tension setting value. The PLC collaborative control terminal 3 transmits data automatically or manually to the yarn feeding detection center 2 and the winding detection center 1. The number of data channels in the PLC collaborative control terminal 3 allows it to control 20 sets of collaborative control nodes. Data exchange is possible between the PLC collaborative control terminal 3 and the collaborative control nodes, allowing for the exchange of setting value data. This data transmission process can be performed automatically or manually.

[0050] The system also includes a production line control terminal 6 that is data-connected to the PLC collaborative control terminal 3. The production line control terminal 6 is equipped with buttons, the number of which corresponds to the number of collaborative control nodes. The producer presses the corresponding button on the production line control terminal 6 to retrieve control data from a specific PLC collaborative control terminal 3. Correspondingly, the tension setting value for each yarn 7 in each PLC collaborative control terminal 3 can be set on the production line control terminal 6 and input to the corresponding node via data communication. If an error occurs at a node, the error information is fed back to the production line control terminal 6, and an error report is displayed, showing the specific machine alarmed and the alarm history.

[0051] The system also includes yarn 7 and a compensation mechanism 8. Yarn 7 is wound around the tension sensing device 4 connected to the take-up detection center 1 and the yarn feeding detection center 2 in the same group. The compensation mechanism 8 is located at the end of the yarn 7 to control the stretching or tightening of the yarn 7. The yarn 7 is wound around the tension sensing device 4 and the tension is adjusted by the tension adjusting guide wheel. Finally, it enters the warp knitting machine for weaving. The compensation mechanism 8 at the end controls the stretching or tightening of the yarn 7 according to the corresponding command issued by the PLC collaborative control terminal 3 to achieve tension compensation.

[0052] Reference Figure 4 , Figure 4 This is a schematic diagram of the overall structure of the tension sensing device in some embodiments of this utility model.

[0053] According to some embodiments of this utility model, optionally, the tension sensing device 4 includes a support base 41, a yarn guide roller assembly 42 disposed on the support base 41, and an elastic tension sensor 43 disposed on the support base 41 and located between the yarn guide roller assembly 42. The support base 41 is used to support the operation of the entire sensor, while the yarn guide roller assembly 42 is used to guide the movement path of the yarn 7, so that the yarn 7 with a certain tension passes through the elastic roller column that abuts against the extension block 434, and guides the elastic roller column to press the elastic deformation plate 433 through the extension plate. The elastic deformation plate 433 is connected to the tension detection circuit board 432, converting the elastic deformation generated during compression into electrical flux, thereby realizing the data detection and display of tension. The elastic deformation plate 433 and the tension detection circuit board 432 are fixed on the support boss 431, which plays a fixing role for the elastic deformation plate 433 and the tension detection circuit board 432.

[0054] The elastic tension sensor 43 includes a support boss 431, a tension detection circuit board 432, an elastic deformation plate 433, and an extension block 434. The support boss 431 is disposed on the support base 41. The tension detection circuit board 432 and the elastic deformation plate 433 are respectively disposed on both sides of the support boss 431 and are connected to each other. The extension block 434 abuts against the yarn guide roller assembly 42 and the elastic deformation plate 433. The specific mechanism and implementation principle of the elastic tension sensor 43 can be found in the prior art and will not be elaborated here.

[0055] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0056] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0057] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A tension compensation system for a tension adjustment process, characterized in that, The system includes a winding detection center, a yarn feeding detection center, and a PLC collaborative control terminal. Both the winding detection center and the yarn feeding detection center are electrically connected to several tension sensing devices. The number of tension sensing devices connected to the winding detection center is equal to and corresponds one-to-one with the number of tension sensing devices connected to the yarn feeding detection center. The winding detection center and the yarn feeding detection center are connected through a data interface. One winding detection center and one yarn feeding detection center form a set of collaborative control nodes. The PLC collaborative control terminal is electrically connected to the set of collaborative control nodes.

2. The tension compensation system in the tension adjustment process according to claim 1, characterized in that, The tension sensing devices connected to the winding detection center and the yarn feeding detection center are both 12, and the collaborative control nodes connected to the PLC collaborative control terminal are 20 groups.

3. The tension compensation system in the tension adjustment process according to claim 1, characterized in that, The tension sensor connected to the take-up detection center detects the first instantaneous tension value, and the tension sensor connected to the yarn feeding detection center detects the second instantaneous tension value.

4. The tension compensation system in the tension adjustment process according to claim 3, characterized in that, The yarn feeding detection center stores the set value of the main force, the instantaneous value of the second tension, and the set value of the second tension; the winding detection center stores the instantaneous value of the first tension and the set value of the first tension.

5. The tension compensation system in the tension adjustment process according to claim 1, characterized in that, The PLC collaborative control terminal is equipped with 32 data channels. It also stores the first tension setting value and the second tension setting value. The PLC collaborative control terminal transmits data to the yarn feeding detection center and the winding detection center automatically or manually.

6. The tension compensation system in the tension adjustment process according to claim 1, characterized in that, It also includes a production line control terminal that is data-connected to the PLC collaborative control terminal. The production line control terminal is equipped with buttons, and the number of buttons is the same as the number of collaborative control nodes.

7. The tension compensation system in the tension adjustment process according to claim 1, characterized in that, It also includes yarn and a compensation mechanism. The yarn is wound around the tension sensing device connected to the winding detection center and the yarn feeding detection center in the same group. The compensation mechanism is provided at the end of the yarn to control the stretching or tightening of the yarn.

8. The tension compensation system in the tension adjustment process according to claim 1, characterized in that, The tension sensing device includes a support base, a yarn guide roller assembly disposed on the support base, and an elastic tension sensor disposed on the support base and located between the yarn guide roller assemblies.

9. The tension compensation system in the tension adjustment process according to claim 8, characterized in that, The elastic tension sensor includes a support boss, a tension detection circuit board, an elastic deformation plate, and an extension block. The support boss is disposed on the support base. The tension detection circuit board and the elastic deformation plate are respectively disposed on both sides of the support boss and are connected to each other. The extension block abuts against the yarn guide roller assembly and the elastic deformation plate.

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