阅读说明：本技术 一种纤维张力调节检测系统及其使用方法 (Fiber tension adjusting and detecting system and using method thereof ) 是由 史兵振 魏明 姚建华 张保平 王文 于 2021-07-28 设计创作，主要内容包括：本发明提供了一种纤维张力调节检测系统,其一次可检测多根纤维的张力,通过检测可获得每根纤维的张力大小,实现对每根纤维的张力控制；且可实现纤维张力实时进行调节。其包括：纤维张力调节装置；纤维张力检测装置；纤维张力显示模组；所述纤维张力调节装置包括高度方向排布的若干层底板,每层底板的两侧板上分别设置排布有单层过纱口,每层底板对应于两侧板之间的面域上排布有若干过纱装置,至少两个过纱装置形成纱线张力调节组件；靠近纤维张力检测装置的过纱口具体为出纱口,远离纤维张力检测装置的过纱口具体为进纱口；每个所述过纱装置上集成有压力调节装置,纱线顺次通过张力调节组件所对应的压力调节装置进行张力调节作业。(The invention provides a fiber tension adjusting and detecting system, which can detect the tension of a plurality of fibers at a time, and can obtain the tension of each fiber through detection to realize the tension control of each fiber; and the real-time adjustment of the fiber tension can be realized. It includes: a fiber tension adjusting device; a fiber tension detecting device; a fiber tension display module; the fiber tension adjusting device comprises a plurality of layers of bottom plates which are arranged in the height direction, single-layer yarn passing openings are respectively arranged on two side plates of each layer of bottom plate, a plurality of yarn passing devices are arranged on the surface area of each layer of bottom plate corresponding to the space between the two side plates, and at least two yarn passing devices form a yarn tension adjusting assembly; the yarn passing port close to the fiber tension detection device is a yarn outlet, and the yarn passing port far away from the fiber tension detection device is a yarn inlet; each yarn passing device is integrated with a pressure adjusting device, and yarns are sequentially subjected to tension adjusting operation through the pressure adjusting devices corresponding to the tension adjusting assemblies.)

1. A fiber tension adjustment sensing system, comprising:

a fiber tension adjusting device;

a fiber tension detecting device;

a fiber tension display module;

the fiber tension adjusting device comprises a plurality of layers of bottom plates which are arranged in the height direction, single-layer yarn passing openings are respectively arranged on two side plates of each layer of bottom plate, a plurality of yarn passing devices are arranged on the surface area of each layer of bottom plate corresponding to the space between the two side plates, and at least two yarn passing devices form a yarn tension adjusting assembly; the yarn passing port close to the fiber tension detection device is a yarn outlet, and the yarn passing port far away from the fiber tension detection device is a yarn inlet;

each yarn passing device is integrated with a pressure adjusting device, and yarns are sequentially subjected to tension adjusting operation through the pressure adjusting devices corresponding to the tension adjusting assemblies;

the yarn tension adjusting device comprises a yarn tension adjusting device, a yarn tension adjusting device and a yarn tension adjusting device, wherein the yarn tension adjusting device is arranged at the yarn output end of the yarn tension adjusting device, the yarn passing plates which are arranged at two sides are arranged on the fiber tension adjusting device, yarn passing holes are arrayed on the surface area of each yarn passing plate, and two groups of fiber fixing shafts and tension detecting assemblies are arranged in a spacing space between the two yarn passing plates;

each group of tension detection assemblies comprises a detection input end and a detection sensor;

the detection input end of the tension detection assembly is positioned between the two groups of limiting fixed shafts, the tension detection assembly is externally connected with a lifting driving device, and the lifting driving device drives the detection input end to perform tension detection on the yarns at the corresponding height positions;

the signal output end of the detection sensor is connected to the fiber tension display module through data transmission;

the fiber tension display module is used for displaying tension values of the detected corresponding fibers.

2. A fiber tension adjustment sensing system as defined in claim 1, wherein: the fiber tension adjusting device comprises a first frame and a plurality of layers of bottom plates, wherein the bottom plates are arranged along the height direction of the first frame, each layer of bottom plates are provided with at least two groups of yarn passing devices arranged between side plates of two sides, and fibers penetrate through yarn passing openings of one side and then penetrate through yarn passing openings of the other side to be output after passing through the two yarn passing devices which are not arranged on the same straight line in sequence.

3. A fiber tension adjustment sensing system as defined in claim 1, wherein: the yarn passing device comprises a yarn passing shaft, a fixing bolt, an upper pressing sheet, a lower pressing sheet, a spring pressing sheet and an adjusting nut, wherein the bottom of the yarn passing shaft in the height direction is inserted into a corresponding positioning hole of the bottom plate and fixedly arranged on the bottom plate through the fixing bolt, the yarn passing shaft is arranged perpendicular to the bottom plate, a sleeve is arranged in the middle of the yarn passing shaft in the height direction, a laterally convex lower pressing sheet is fixedly arranged at the lower part of the sleeve, the sleeve is sleeved with the upper pressing sheet, the upper pressing sheet vertically acts along the sleeve, the upper pressing sheet is arranged at the upper part of the lower pressing sheet, the upper pressing sheet and the lower pressing sheet form a pressure adjusting device, a space between the upper pressing sheet and the lower pressing sheet is used for passing yarns, the spring pressing sheet is arranged at the upper part of the yarn passing shaft, the adjusting nut is pressed at the top of the spring pressing sheet, and is in threaded connection with the upper threaded part of the yarn passing shaft, the spring is provided between the spring pressing plate and the upper pressing plate, and the adjusting nut is vertically moved along the upper threaded portion to adjust the compression amount of the spring.

4. A fiber tension adjustment sensing system as defined in claim 3, wherein: the outer annular surface of the sleeve is a smooth outer annular surface.

5. A fiber tension adjustment sensing system as defined in claim 1, wherein: the first frame, the bottom plate, the sleeve and the wire passing shaft are all made of conductor materials, and the frame is externally connected with an electrostatic guiding device.

6. A fiber tension adjustment sensing system as defined in claim 1, wherein: the fiber tension detection device comprises a second frame, wire passing plates arranged on two sides, fiber fixing shafts, a tension detection platform, a tension detection base, a tension detection assembly and a lifting driving device, wherein the second frame comprises a supporting frame, the wire passing plates arranged on two sides are arranged on the supporting frame respectively, wire passing holes are arranged on the surface area of each wire passing plate in an array mode, the number and the arrangement number of the wire passing holes are arranged according to the number and the arrangement of fibers passing through the fiber tension adjustment device, the corresponding fiber fixing shafts are fixedly arranged on the inner sides of the supporting frame corresponding to the wire passing plates respectively, each fiber fixing shaft is arranged corresponding to the wire passing holes on the corresponding side, each fiber fixing shaft is arranged vertically, concave guide arc grooves are arranged at the height position of each fiber fixing shaft corresponding to the wire passing holes respectively, and the number of the tension detection assemblies is arranged corresponding to the number of the wire passing holes arranged at the height of a single layer, the bottom of every group tension detection subassembly detects the sensor admittedly and adorns in the corresponding position of tension detection base, the supporting rack is provided with corresponding to the position of tension detection subassembly and dodges the breach groove, tension detection base support in tension detection platform, it still includes horizontal gear switching mechanism, horizontal gear switching mechanism drive tension detection base moves along tension detection platform and keeps off the position, detects and keep off the position switching, tension detection platform is external to have lift drive arrangement's output.

7. A fiber tension adjustment sensing system as defined in claim 6, wherein: the lifting driving device comprises a motor, a steering structure and a lifting rod, wherein the output end of the motor is connected with the input end of the steering structure, the output end of the steering structure is connected with the corresponding lifting screw rod part through a transmission nut, the top of the lifting rod is fixedly connected with the bottom of the tension detection platform, and the lifting driving device drives the detection input end to be arranged corresponding to the fiber to be detected in height.

8. A fiber tension adjustment sensing system as defined in claim 1, wherein: the fiber tension display module comprises a tension signal acquisition module, numerical value reading and displaying software, a computer host and a display, wherein the computer host is internally provided with the tension signal acquisition module, the numerical value reading and displaying software, the output signal of each detection sensor is respectively transmitted to the tension signal acquisition module, the output signal of each detection sensor is fed back to a display interface of the display through the numerical value reading and displaying software, the tension of fibers detected by each tension detection assembly is displayed on the display interface in sequence, and the number of detection rounds of each round is prompted.

9. A use method of a fiber tension adjusting and detecting system is characterized in that:

a. and (3) tension detection calibration: when the fiber trend is easy to change due to the fact that the positions of the tension detection shaft and the fiber fixing shaft are used or changed for the first time, calibration is needed; when data are cleared, one layer of fiber through hole is selected, yarns are adopted to fix one end of the fiber through hole, an object with fixed weight is adopted at the other end of the fiber through hole, the measured value is detected by measuring the tension at the moment, the value is multiplied by a coefficient m when the data are processed, and m is the object gravity/the measured value;

b. threading: the fiber released from the creel penetrates through a yarn inlet of the tension adjusting device, penetrates through a group of yarn passing devices, penetrates through a yarn outlet, enters a yarn passing hole of the tension detecting device, penetrates through a fiber fixing shaft, and is discharged out of the tension detecting device from the yarn passing hole, and all the fibers are connected with an external traction device;

c. and (3) detection: under the condition of a certain traction speed, the tension detection base is adjusted to a moving gear, a lifting driving device is used for driving the tension detection base to ascend or descend to a fiber position to be detected, and then the tension detection base is adjusted to a detection gear to detect the fiber tension;

d. adjusting: adjusting the height of the adjusting nut to be within +/-10% of the target tension according to the deviation between the numerical value displayed by the fiber tension display module and the target tension; when the adjusting nut is adjusted to limit, and effective tension cannot be obtained, the position of the yarn passing device can be changed, so that the fiber tension can be changed by changing the angle of the fiber;

e. sequentially detecting and adjusting the tension of the yarns on the bottom plate of each layer;

f. sampling inspection: in the production process, the yarns corresponding to a certain layer of bottom plate can be subjected to sampling inspection and adjustment at any time according to the steps.

10. A method of using a fiber tension modulating sensing system as defined in claim 9, wherein: in the step d, when the tension value of the corresponding fiber is smaller than the target tension, the height of the adjusting nut at the corresponding position is reduced, and when the tension value is larger than the target tension, the height of the adjusting nut at the corresponding position is increased.

Technical Field

The invention relates to the technical field of fiber tension detection, in particular to a fiber tension adjusting and detecting system, and further provides a using method of the fiber tension adjusting and detecting system.

Background

A composite material pultrusion process is a method for continuously producing composite material section bars, which is an automatic production process for forming pultruded products by carrying out resin impregnation on reinforced fibers on a creel, then passing through a forming die which keeps a certain section shape, and continuously demoulding after curing and forming in the die.

For unidirectional composite material products, the pultrusion process has the advantages of high straightness, high fiber strength utilization degree, high production efficiency and the like, so that rapid development is achieved. However, in the conventional pultrusion process, the tension of the fibers is integrally adjusted, and the tension difference between the fibers is large due to the difference of the paths of the fibers, so that the strength utilization rate of each fiber has large deviation in the actual product. Corresponding technology corresponding to higher fiber tension requirements needs tension between fibers to be controlled within +/-10%, tension of a single fiber needs to be controlled to be more than 10N, and in the prior art, under the condition that no special fiber pultrusion detection device exists, only handheld tension detection equipment can be used for detection, so that efficiency is low, and online detection cannot be realized.

Disclosure of Invention

Aiming at the problems, the invention provides a fiber tension adjusting and detecting system which can detect the tension of a plurality of fibers at one time, and can obtain the tension of each fiber through detection to realize the tension control of each fiber; the tension of the fiber can be adjusted in real time, so that the strength utilization rate of the fiber is improved, and the straightness of the product is improved; the on-line detection and adjustment of the fiber tension are realized, and the sampling inspection and adjustment can be carried out at any time in the actual production process.

A fiber tension adjustment sensing system, comprising:

a fiber tension adjusting device;

a fiber tension detecting device;

a fiber tension display module;

the fiber tension adjusting device comprises a plurality of layers of bottom plates which are arranged in the height direction, single-layer yarn passing openings are respectively arranged on two side plates of each layer of bottom plate, a plurality of yarn passing devices are arranged on the surface area of each layer of bottom plate corresponding to the space between the two side plates, and at least two yarn passing devices form a yarn tension adjusting assembly; the yarn passing port close to the fiber tension detection device is a yarn outlet, and the yarn passing port far away from the fiber tension detection device is a yarn inlet;

each yarn passing device is integrated with a pressure adjusting device, and yarns are sequentially subjected to tension adjusting operation through the pressure adjusting devices corresponding to the tension adjusting assemblies;

the yarn tension adjusting device comprises a yarn tension adjusting device, a yarn tension adjusting device and a yarn tension adjusting device, wherein the yarn tension adjusting device is arranged at the yarn output end of the yarn tension adjusting device, the yarn passing plates which are arranged at two sides are arranged on the fiber tension adjusting device, yarn passing holes are arrayed on the surface area of each yarn passing plate, and two groups of fiber fixing shafts and tension detecting assemblies are arranged in a spacing space between the two yarn passing plates;

each group of tension detection assemblies comprises a detection input end and a detection sensor;

the detection input end of the tension detection assembly is positioned between the two groups of limiting fixed shafts, the tension detection assembly is externally connected with a lifting driving device, and the lifting driving device drives the detection input end to perform tension detection on the yarns at the corresponding height positions;

the signal output end of the detection sensor is connected to the fiber tension display module through data transmission;

the fiber tension display module is used for displaying tension values of the detected corresponding fibers.

It is further characterized in that:

the fiber tension adjusting device comprises a first frame and a plurality of layers of bottom plates, the bottom plates are arranged along the height direction of the first frame, at least two groups of yarn passing devices are arranged between side plates on two sides of the surface area of each layer of bottom plate, and fibers penetrate through yarn passing openings on one side and then sequentially pass through the two yarn passing devices which are not arranged on the same straight line and then penetrate through yarn passing openings on the other side to be output;

preferably, three groups of yarn passing devices, namely a first yarn passing device, a second yarn passing device and a third yarn passing device, are arranged in the surface area of each layer of the bottom plate along the width between the side plates on the two sides, and the fibers penetrate through the yarn passing openings on one side and then sequentially pass through the first yarn passing devices, the second yarn passing devices and the third yarn passing devices which are not arranged on the same straight line and then penetrate through the yarn passing openings on the other side to be output;

the yarn passing device comprises a yarn passing shaft, a fixing bolt, an upper pressing sheet, a lower pressing sheet, a spring pressing sheet and an adjusting nut, wherein the bottom of the yarn passing shaft in the height direction is inserted into a corresponding positioning hole of the bottom plate and fixedly arranged on the bottom plate through the fixing bolt, the yarn passing shaft is arranged perpendicular to the bottom plate, a sleeve is arranged in the middle of the yarn passing shaft in the height direction, a laterally convex lower pressing sheet is fixedly arranged at the lower part of the sleeve, the sleeve is sleeved with the upper pressing sheet, the upper pressing sheet vertically acts along the sleeve, the upper pressing sheet is arranged at the upper part of the lower pressing sheet, the upper pressing sheet and the lower pressing sheet form a pressure adjusting device, a space between the upper pressing sheet and the lower pressing sheet is used for passing yarns, the spring pressing sheet is arranged at the upper part of the yarn passing shaft, the adjusting nut is pressed at the top of the spring pressing sheet, and is in threaded connection with the upper threaded part of the yarn passing shaft, the spring is arranged between the spring pressing sheet and the upper pressing sheet, and the adjusting nut vertically moves along the upper thread part so as to adjust the compression amount of the spring, so that the adjustment of the fiber tension drives the upper pressing sheet to press downwards or move upwards, and further the pressure of the upper pressing sheet pressed on the yarn is adjusted, and further the adjustment of the fiber tension is realized;

the outer ring surface of the sleeve is a smooth outer ring surface, so that the yarn is prevented from being abraded, and the generation of friction static electricity is reduced;

a plurality of supporting cross rods are arranged on the two side frames of the first frame, and two ends of the bottom plate are respectively supported on the corresponding supporting cross rods;

the first frame, the bottom plate, the sleeve and the wire passing shaft are all made of conductor materials, the frame is externally connected with an electrostatic guiding device, and the conductive material wire passing shaft and the electrostatic guiding device are adopted to guide away static electricity, so that the static electricity is reduced, and the generation of fiber hairiness is reduced;

the upper pressing sheet and the lower pressing sheet are made of conductive materials, the surface roughness Ra is less than or equal to 0.05, and conductive ceramics are preferentially adopted;

the fiber tension adjusting device preferentially adopts the height of the adjusting nut to adjust the tension, and when the height adjustment of the nut cannot meet the tension adjustment, the fiber tension adjusting device can adopt the position of the corresponding yarn passing device to move to adjust;

the fiber tension detection device comprises a second frame, wire passing plates arranged on two sides, fiber fixing shafts, a tension detection platform, a tension detection base, a tension detection assembly and a lifting driving device, wherein the second frame comprises a supporting frame, the wire passing plates arranged on two sides are arranged on the supporting frame respectively, wire passing holes are arranged on the surface area of each wire passing plate in an array mode, the number and the arrangement number of the wire passing holes are arranged according to the number and the arrangement of fibers passing through the fiber tension adjustment device, the corresponding fiber fixing shafts are fixedly arranged on the inner sides of the supporting frame corresponding to the wire passing plates respectively, each fiber fixing shaft is arranged corresponding to the wire passing holes on the corresponding side, each fiber fixing shaft is arranged vertically, concave guide arc grooves are arranged at the height position of each fiber fixing shaft corresponding to the wire passing holes respectively, and the number of the tension detection assemblies is arranged corresponding to the number of the wire passing holes arranged at the height of a single layer, the bottom detection sensor of each group of tension detection assemblies is fixedly arranged at a corresponding position of the tension detection base, an avoidance notch groove is arranged at a position, corresponding to the tension detection assemblies, of the supporting frame, the tension detection base is supported on the tension detection platform, the tension detection platform further comprises a horizontal gear switching mechanism, the horizontal gear switching mechanism drives the tension detection base to move gears and detect gear switching along the tension detection platform, and the tension detection platform is externally connected with an output end of a lifting driving device;

the lifting driving device comprises a motor, a steering structure and a lifting rod, wherein the output end of the motor is connected with the input end of the steering structure, the output end of the steering structure is connected with the corresponding lifting screw rod part through a transmission nut, the top of the lifting rod is fixedly connected with the bottom of the tension detection platform, the lifting driving device drives the detection input end to be arranged corresponding to the fiber of the height to be detected, then the tension detection base moves horizontally through the horizontal gear switching structure, so that the detection input end presses and attaches the yarn to be detected, and the force received by the detection input end is transmitted to the detection sensor;

the tension detection wheel is a guide wheel and can rotate freely, only the direction of the force is changed, and the magnitude of the force is not changed, so that the precision of product tension detection is ensured;

the tension detection assembly further comprises a tension detection shaft, the detection input end is specifically a tension detection wheel, and the tension detection wheel is connected with a detection sensor through a vertically arranged tension detection shaft;

the middle area of the detection shaft in the height direction is a semi-cylinder, the section of the semi-cylinder is parallel to the fiber direction, and the semi-cylinder is used for preventing the tension detection shaft from touching non-detection fibers;

the fiber tension display module comprises a tension signal acquisition module, numerical value reading and displaying software, a computer host and a display, wherein the computer host is internally provided with the tension signal acquisition module, the numerical value reading and displaying software, the output signal of each detection sensor is respectively transmitted to the tension signal acquisition module, the output signal of each detection sensor is fed back to a display interface of the display through the numerical value reading and displaying software, the tension of fibers detected by each tension detection assembly is displayed on the display interface in sequence, the number of times of each detection wheel is prompted, and accurate positioning of a grid line is ensured.

A use method of a fiber tension adjusting and detecting system is characterized in that:

a. and (3) tension detection calibration: when the fiber trend is easy to change due to the fact that the positions of the tension detection shaft and the fiber fixing shaft are used or changed for the first time, calibration is needed; when data are cleared, one layer of fiber through hole is selected, yarns are adopted to fix one end of the fiber through hole, an object with fixed weight is adopted at the other end of the fiber through hole, the measured value is detected by measuring the tension at the moment, the value is multiplied by a coefficient m when the data are processed, and m is the object gravity/the measured value;

b. threading: the fiber released from the creel penetrates through a yarn inlet of the tension adjusting device, penetrates through a group of yarn passing devices, penetrates through a yarn outlet, enters a yarn passing hole of the tension detecting device, penetrates through a fiber fixing shaft, and is discharged out of the tension detecting device from the yarn passing hole, and all the fibers are connected with an external traction device;

c. and (3) detection: under the condition of a certain traction speed, the tension detection base is adjusted to a moving gear, a lifting driving device is used for driving the tension detection base to ascend or descend to a fiber position to be detected, and then the tension detection base is adjusted to a detection gear to detect the fiber tension;

d. adjusting: adjusting the height of the adjusting nut to be within +/-10% of the target tension according to the deviation between the numerical value displayed by the fiber tension display module and the target tension; when the adjusting nut is adjusted to limit, and effective tension cannot be obtained, the position of the yarn passing device can be changed, so that the fiber tension can be changed by changing the angle of the fiber;

e. sequentially detecting and adjusting the tension of the yarns on the bottom plate of each layer;

f. sampling inspection: in the production process, the yarns corresponding to a certain layer of bottom plate can be subjected to sampling inspection and adjustment at any time according to the steps.

It is further characterized in that:

in the step d, when the tension value of the corresponding fiber is smaller than the target tension, the height of the adjusting nut at the corresponding position is reduced, and when the tension value is larger than the target tension, the height of the adjusting nut at the corresponding position is increased.

After the technical scheme is adopted, the device is suitable for online tension detection in a dense mode (within 50mm of yarn interval) and in a large quantity mode (more than 50 yarns are detected simultaneously), rapid detection and tension adjustment of a plurality of yarns are achieved through low cost, a closed-loop structure is detected, displayed and adjusted, the tension of a plurality of fibers can be detected at one time, the tension of each fiber can be obtained through detection, and tension control of each fiber is achieved; the tension of the fibers can be adjusted between 2N and 50N, and the tension deviation between the fibers is within +/-10 percent, so that the strength utilization rate of the fibers is improved, and the straightness of the product is improved; reducing the roughness of a part in contact with the fiber in the tension adjusting device, reducing the generation of friction static electricity, and leading the static electricity away by adopting a conductive material wire passing shaft and a static electricity guiding device so as to reduce the static electricity and further reduce the generation of fiber hairiness; the on-line detection and adjustment of the fiber tension are realized, and the sampling inspection and adjustment can be carried out at any time in the actual production process.

Drawings

FIG. 1 is a schematic diagram of the front view structure of the present invention;

FIG. 2 is a schematic perspective view of a fiber tensioning device according to the present invention;

FIG. 3 is a perspective view of a base plate of the fiber tensioning device of the present invention;

FIG. 4 is a front view structural schematic diagram of the yarn passing device of the present invention;

FIG. 5 is a schematic front view of the fiber tension detecting device of the present invention;

FIG. 6 is a schematic side view of the fiber tension detecting device of the present invention;

FIG. 7 is a front view structural schematic of the fiber fixation shaft of the present invention;

FIG. 8 is a front view of the tension sensing assembly of the present invention;

FIG. 9 is a schematic top view of a fiber tension test according to the present invention;

the names corresponding to the sequence numbers in the figure are as follows:

the device comprises a fiber tension adjusting device 100, a bottom plate 10, a side plate 11, a yarn inlet 12, a yarn outlet 13, a pressure adjusting device 20, a first frame 30, a side frame 31, a supporting cross bar 32, a first yarn passing device 40, a yarn passing shaft 41, a fixing bolt 42, an upper pressing sheet 43, a lower pressing sheet 44, a spring 45, a spring pressing sheet 46, an adjusting nut 47, a sleeve 48, a second yarn passing device 50, a third yarn passing device 60 and an electrostatic guiding device 70

The fiber tension detection device 200, the thread passing plate 210, the thread passing hole 211, the fiber fixing shaft 220, the concave guiding arc groove 221, the tension detection assembly 230, the detection input end 231, the detection sensor 232, the tension detection shaft 233, the lifting driving device 240, the motor 241, the steering structure 242, the lifting rod 243, the tension detection platform 250, the tension detection base 260, the second frame 270, the supporting frame 271

Fiber tension display module 300, tension signal acquisition module 301, numerical value reading and display software 302, computer host 303 and display 304

A fiber 400.

Detailed Description

A fiber tension adjusting and detecting system is shown in fig. 1-8, and comprises a fiber tension adjusting device 100, a fiber tension detecting device 200 and a fiber tension display module 300;

the fiber tension adjusting device 100 comprises a plurality of layers of bottom plates 10 which are arranged in the height direction, single-layer yarn passing openings are respectively arranged on two side plates 11 of each layer of bottom plate 10, a plurality of yarn passing devices are arranged on the surface area of each layer of bottom plate 10 corresponding to the space between the two side plates 11, and at least two yarn passing devices form a yarn tension adjusting assembly; the yarn passing opening close to the fiber tension detection device 200 is specifically a yarn outlet 13, and the yarn passing opening far away from the fiber tension detection device 200 is specifically a yarn inlet 12;

each yarn passing device is integrated with a pressure adjusting device 20, and the fibers 400 are sequentially subjected to tension adjusting operation through the pressure adjusting devices 20 corresponding to the tension adjusting components;

the yarn output end of the fiber tension adjusting device 100 is provided with a fiber tension detecting device 200, the fiber tension detecting device 200 is provided with wire passing plates 210 arranged on two sides, wire passing holes 211 are arrayed on the surface area of each wire passing plate 210, and two groups of fiber fixing shafts 220 and tension detecting components 230 are arranged in an interval space between the two wire passing plates 210;

each set of tension detection assembly 230 includes a detection input 231, a detection sensor 232;

a detection input end 231 of the tension detection assembly 230 is positioned between the two groups of limit fixing shafts 220, the tension detection assembly 230 is externally connected with a lifting driving device 240, and the lifting driving device 240 drives the detection input end to perform tension detection on the yarns at the corresponding height positions;

the signal output end of the detection sensor 232 is connected to the fiber tension display module 300 through data transmission;

the fiber tension display module 300 is used for displaying the tension value of the detected corresponding fiber.

In the specific implementation: the fiber tension adjusting device 100 comprises a first frame 30 and a plurality of layers of bottom plates 10, wherein the plurality of layers of bottom plates 10 are arranged along the height direction of the first frame 30, three groups of yarn passing devices, namely a first yarn passing device 40, a second yarn passing device 50 and a third yarn passing device 60, are arranged in the surface area of each layer of bottom plate 10 along the width between the side plates on the two sides, and fibers pass through the yarn inlet and then pass through the first yarn passing device 40, the second yarn passing device 50 and the third yarn passing device 60 which are not arranged on the same straight line in sequence, and then pass through the yarn inlet on the other side to be output; in specific implementation, the first yarn passing device 40, the third yarn passing device 60, the yarn inlet 12 and the yarn outlet 13 of the corresponding fiber are arranged on the same straight line, the second yarn passing device 50 is arranged beside the first yarn passing device, and the position of the second yarn passing device 50 is adjusted to adjust the fiber tension;

each yarn passing device comprises a yarn passing shaft 41, a fixing bolt 42, an upper pressing sheet 43, a lower pressing sheet 44, a spring 45, a spring pressing sheet 46 and an adjusting nut 47, wherein the bottom of the yarn passing shaft 41 in the height direction is inserted into a corresponding positioning hole of the bottom plate 10 and fixedly arranged on the bottom plate 10 through the fixing bolt 42, the yarn passing shaft 41 is arranged perpendicular to the bottom plate 10, a sleeve 48 is arranged in the middle of the yarn passing shaft 41 in the height direction, the lower part of the sleeve 48 is fixedly provided with the lower pressing sheet 44 with a side protrusion, the sleeve 48 is sleeved with the upper pressing sheet 43, the upper pressing sheet 43 vertically acts along the sleeve 48, the upper pressing sheet 43 is arranged at the upper part of the lower pressing sheet 44, the upper pressing sheet 43 and the lower pressing sheet 44 form the pressure adjusting device 20, the space between the upper pressing sheet 43 and the lower pressing sheet 44 is used for passing yarns, the spring pressing sheet 46 is arranged at the upper part of the yarn passing shaft 41, the top of the spring pressing sheet 46 is provided with the adjusting nut 47, and the adjusting nut 47 is in threaded connection with the upper threaded part of the yarn passing shaft 41, a spring 45 is arranged between the spring pressing sheet 46 and the upper pressing sheet 43, and the adjusting nut 47 vertically moves along the upper thread part so as to adjust the compression amount of the spring 45, so that the adjustment of the fiber tension drives the upper pressing sheet 43 to press downwards or move upwards, and the adjustment is further used for adjusting the pressure of the upper pressing sheet 43 pressed on the yarn, and further used for adjusting the fiber tension;

the outer annular surface of the sleeve 48 is smooth to ensure that the yarn is not abraded and to reduce the generation of friction static electricity;

a plurality of supporting cross bars 32 are arranged on two side frames 31 of the first frame 30, and two ends of the bottom plate 10 are respectively supported on the corresponding supporting cross bars 32;

the first frame 30, the bottom plate 10, the sleeve 48 and the spool 41 are all made of conductor materials, the frame 30 is externally connected with the static guiding device 70, and the conductive material spool and the static guiding device 70 are adopted to guide away static electricity, so that the static electricity is reduced, and the generation of fiber hairiness is reduced;

in specific implementation, the upper pressing sheet and the lower pressing sheet are made of conductive ceramics, and the surface roughness Ra is less than or equal to 0.05.

The fiber tension adjusting device 100 preferentially adopts the height of the adjusting nut 47 to adjust the tension, and when the height adjustment of the adjusting nut 47 cannot meet the tension adjustment, the position of the corresponding yarn passing device can be moved to adjust the tension;

the fiber tension detecting device 200 comprises a second frame 270, wire passing plates 210 on two sides, fiber fixing shafts 220, a tension detecting platform 250, a tension detecting base 260, a tension detecting assembly 230 and a lifting driving device 240, wherein the second frame 270 comprises a supporting frame 271, the wire passing plates 210 arranged on two sides are arranged on the supporting frame 271, the wire passing holes 211 are arranged on the surface area of the wire passing plates 210 in an array manner, the number and the arrangement number of the wire passing holes 211 are arranged according to the number and the arrangement of fibers passing through the fiber tension adjusting device 100, the corresponding fiber fixing shafts 220 are respectively and fixedly arranged on the inner sides of the supporting frame 271 corresponding to the wire passing plates 210, each fiber fixing shaft 220 is arranged corresponding to the wire passing hole 211 on the corresponding side, each fiber fixing shaft 220 is arranged in a vertical direction, the height position of each fiber fixing shaft 220 corresponding to the position of the wire passing hole 211 is respectively provided with an inner concave guiding arc groove 221, the number of the tension detection assemblies 230 is arranged corresponding to the number of the wire through holes 211 arranged at a single layer height, the bottom detection sensor 232 of each group of the tension detection assemblies 230 is fixedly arranged at a corresponding position of the tension detection base 260, the supporting frame 271 is provided with an avoiding notch groove corresponding to the position of the tension detection assemblies 230, the tension detection base 260 is supported on the tension detection platform 250, the tension detection device further comprises a horizontal gear switching mechanism (not shown in the figure), the horizontal gear switching mechanism drives the tension detection base 260 to move gears and detect gear switching along the tension detection platform 250, and the tension detection platform 250 is externally connected with an output end of the lifting driving device 240;

in specific implementation, the horizontal gear switching mechanism can be a linear driving cylinder or an electric cylinder.

The lifting driving device 240 comprises a motor 241, a steering structure 242 and a lifting rod 243, wherein the output end of the motor 241 is connected with the input end of the steering structure 242, the output end of the steering structure 242 is connected with the corresponding screw rod part of the lifting rod 243 through a transmission nut (shielded and belonging to a conventional direction-changing transmission structure), the top of the lifting rod 243 is fixedly connected with the bottom of the tension detection platform 250, the lifting driving device 240 drives the detection input end 231 to be arranged corresponding to the fiber with the height to be detected, then the tension detection base 260 horizontally moves through a horizontal gear switching structure, so that the detection input end 231 is pressed and attached to the yarn to be detected (see fig. 9), and the detection input end 231 transmits the received force to the detection sensor 232;

the tension detection assembly 230 further comprises a tension detection shaft 233, the detection input end 231 is specifically a tension detection wheel, and the tension detection wheel is connected with the detection sensor 232 through the vertically arranged tension detection shaft;

the tension detection wheel is a guide wheel and can rotate freely, only the direction of the force is changed, and the magnitude of the force is not changed, so that the precision of product tension detection is ensured;

the middle area of the tension detection shaft 233 in the height direction is a semi-cylinder, and the section of the semi-cylinder is parallel to the fiber direction, which is used to avoid the tension detection shaft touching the non-detection fiber.

Fiber tension display module assembly 300 includes tension signal acquisition module 301, numerical value reads and shows software 302, computer 303, display 304, computer 303 embeds there is tension signal acquisition module 301, numerical value reads and shows software 302, every detection sensor 232's output signal transmits to tension signal acquisition module 301 respectively, and read and show software 302 feedback to display 304's display interface through numerical value, show the tensile force of the fibre that each tension detection subassembly detected according to showing in order on the interface, and the round number of each round of detection of suggestion, ensure the accurate location to the grid line.

A use method of a fiber tension adjusting and detecting system corresponds to the condition that three groups of yarn passing devices are arranged on the surface area of a bottom plate along the width between side plates on two sides, the three groups of yarn passing devices are respectively a first yarn passing device, a second yarn passing device and a third yarn passing device, the first yarn passing device, the third yarn passing device and yarn inlet and yarn outlet of corresponding fibers are arranged on the same straight line, the second yarn passing device is arranged beside the side, and the fiber tension is adjusted by adjusting the position of the second yarn passing device, and the fiber tension adjusting and detecting system comprises the following operation steps:

a. and (3) tension detection calibration: when the fiber trend is easy to change due to the fact that the positions of the tension detection shaft and the fiber fixing shaft are used or changed for the first time, calibration is needed; when data are cleared, one layer of fiber through hole is selected, yarns are adopted to fix one end of the fiber through hole, an object with fixed weight is adopted at the other end of the fiber through hole, the measured value is detected by measuring the tension at the moment, the value is multiplied by a coefficient m when the data are processed, and m is the object gravity/the measured value;

b. threading: the fiber released from the creel penetrates through a yarn inlet of the tension adjusting device, penetrates through the first yarn passing device, the second yarn passing device and the third yarn passing device, then penetrates out of a yarn outlet, enters a yarn passing hole of the tension detecting device, penetrates through a fiber fixing shaft, and exits from the tension detecting device through the yarn passing hole, and all the fibers are connected with an external traction device;

c. and (3) detection: under the condition of a certain traction speed, the tension detection base is adjusted to a moving gear, a lifting driving device is used for driving the tension detection base to ascend or descend to a fiber position to be detected, and then the tension detection base is adjusted to a detection gear to detect the fiber tension;

d. adjusting: according to the deviation between the value displayed by the fiber tension display module and the target tension, the height of the adjusting nut is adjusted to be within +/-10% of the target tension, when the tension value of the corresponding fiber is smaller than the target tension, the height of the adjusting nut at the corresponding position is reduced, and when the tension value is larger than the target tension, the height of the adjusting nut at the corresponding position is increased; when the adjusting nut is adjusted to limit, and effective tension cannot be obtained, the position of the second yarn passing device can be changed to change the angle of the fiber to change the fiber tension;

e. sequentially detecting and adjusting the tension of the yarns on the bottom plate of each layer;

f. sampling inspection: in the production process, the yarns corresponding to a certain layer of bottom plate can be subjected to sampling inspection and adjustment at any time according to the steps.

During specific implementation, 36 yarn passing openings are respectively arranged on two side plates 11 of an eight-layer bottom plate 10, 36 single-row yarn passing holes 211 are arrayed on the surface area of the yarn passing plate 210, the height direction of the yarn passing holes is 8 rows, 36 tension detection assemblies 230 are arranged on the tension detection base 260, each tension detection assembly 230 independently corresponds to a detection sensor 232, the detection sensors 232 are respectively numbered 1-32, the detection sensors transmit signals to the tension signal acquisition module 301 through wireless transmission (preferably Bluetooth or wifi), and finally the signals are fed back to a display interface of the display 304 through numerical reading and displaying software 302, and after two times of detection, the display is as shown in table 1 and table 2:

TABLE 1

TABLE 2

The tension values of the yarns corresponding to tables 1 and 2 are both 9.7N, the tension set value is 10N, namely the detected tensions of the two rows of yarns reach the set standard, and the adjustment operation is not needed.

The tension detection device is suitable for intensive (within 50mm of yarn interval) online tension detection when the number of yarns is large (more than 50 yarns are detected simultaneously), fast detection and tension adjustment of a plurality of yarns are realized at low cost, a closed loop structure is adopted for detection, display and adjustment, the tension of a plurality of fibers can be detected at one time, the tension of each fiber can be obtained through detection, and tension control of each fiber is realized; the tension of the fibers can be adjusted between 2N and 50N, and the tension deviation between the fibers is within +/-10 percent, so that the strength utilization rate of the fibers is improved, and the straightness of the product is improved; reducing the roughness of a part in contact with the fiber in the tension adjusting device, reducing the generation of friction static electricity, and leading the static electricity away by adopting a conductive material wire passing shaft and a static electricity guiding device so as to reduce the static electricity and further reduce the generation of fiber hairiness; the on-line detection and adjustment of the fiber tension are realized, and the sampling inspection and adjustment can be carried out at any time in the actual production process.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.