CN115287818A - Yarn carrier with active yarn tension control function and method - Google Patents
Yarn carrier with active yarn tension control function and method Download PDFInfo
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- CN115287818A CN115287818A CN202210927576.7A CN202210927576A CN115287818A CN 115287818 A CN115287818 A CN 115287818A CN 202210927576 A CN202210927576 A CN 202210927576A CN 115287818 A CN115287818 A CN 115287818A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/48—Auxiliary devices
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Abstract
A yarn carrier with an active yarn tension control function and a method thereof comprise a frame, a curling mechanism, a control module, a tension sensor, an electric energy transmission system and a yarn guide rod; the curling mechanism, the control module and the tension sensor are sequentially arranged on the upper part of the rack from top to bottom, and the electric energy transmission system is arranged on the lower part of the rack and connected with the rack; the yarn barrel is connected with a main shaft of a motor, the motor is fixed at the top of a motor supporting plate, a plurality of upper connecting rods are arranged at the lower part of the motor supporting plate, the lower end of each upper connecting rod is connected with the upper surface of the rack, and the upper end of each upper connecting rod is fixed at the edge of the motor supporting plate; the singlechip is fixed in the middle of the upper connecting rod; the tension sensor is connected with the frame, and the lower end of the yarn guide rod is connected with the upper surface of the frame; the tension sensor is in communication connection with the single chip microcomputer, and the signal output end of the single chip microcomputer is connected with the signal input end of the motor. The invention ensures that the braided fabric structure is more stable and uniform, and improves the automation degree and the braiding efficiency of three-dimensional braiding.
Description
Technical Field
The invention relates to a yarn carrier and a weaving method, in particular to a yarn carrier with a function of actively controlling yarn tension and a method, belonging to the field of weaving machinery.
Background
With the more and more extensive application of composite materials and the rapid development of advanced technologies in the fields of aerospace, missile, atomic energy, high-speed vehicles and the like, compared with the traditional metal materials, the composite materials which are formed by weaving some prefabricated members with complex shapes on three-dimensional weaving equipment and then processing the prefabricated members by utilizing the three-dimensional weaving technology are greatly improved in mechanical property, and the designability of the prefabricated member structure has great advantages, so that the requirement on the three-dimensional weaving technology is more and more strong. Research and development of related equipment for three-dimensional weaving begins in the late 60's of the 20 th century. The fully automatic three-dimensional knitting machine developed by Maister company in germany in 1973 is considered as the first three-dimensional knitting machine, and the four-step three-dimensional knitting machine capable of continuously feeding yarns was successfully developed in 1989 by north carolina university in the united states, so that the knitting efficiency is obviously improved. The research of domestic three-dimensional weaving technology is later than that of foreign countries, but the development is quicker.
The three-dimensional knitted fabric is finished through the movement of the yarn carrier on the three-dimensional knitting machine, and the applicability of the three-dimensional knitting technology is greatly enhanced due to the application of the yarn carrier. Therefore, the yarn carrier is an important link for connecting the yarn and the knitting machine, and the design of the yarn carrier also becomes one of the research focuses of scientific research workers at home and abroad. However, the traditional yarn carrier only plays a role in carrying and conveying yarns in the whole weaving process, so that the process requirements cannot be completely met, the tension control of the yarn carrier on the yarns in the weaving process becomes a key for the development of the active yarn carrier, and therefore, the invention mainly solves the problem and indirectly improves the automation degree of three-dimensional weaving, the weaving efficiency and the comprehensive performance of the woven fabric.
The utility model discloses a device for controlling the yarn tension of a yarn carrier, which has the application number of 201720458645.9 and is named as a device for controlling the yarn tension of the yarn carrier, and comprises a one-way self-locking mechanism, an arc-shaped supporting plate, a cross beam and a supporting frame; the one-way self-locking mechanism is fixedly connected to the base through bolts, the yarn bobbin shaft is installed on the base, the yarn bobbin is installed on the yarn bobbin shaft, the arc-shaped supporting plate is arranged on the base, and the yarn bobbin shaft is located behind the arc-shaped supporting plate. The upper part and the lower part of the yarn barrel are respectively provided with a yarn barrel lower stop block and a yarn barrel upper stop block, the yarn barrel lower stop block and the yarn barrel upper stop block are respectively welded at the upper end and the lower end of the yarn barrel, and the yarn barrel lower stop block is kept in contact with the one-way self-locking mechanism. Two springs are vertically and downwards installed at the other ends of the two cross beams, cross beam upper shafts are vertically arranged in the middle of the two cross beams, two ends of each cross beam upper shaft penetrate through the two cross beams respectively, two support columns are connected to the two end portions, extending out of the cross beams, of each support column, the support columns are perpendicular to the cross beam upper shafts, and the cross beam upper shafts can rotate in the cross beams. The middle part of the upper shaft of the cross beam is provided with a pulley which adopts an adhesive connection mode; the end-to-end connection of two support columns has the crossbeam lower shaft, and the middle part of crossbeam lower shaft is provided with the pulley, and spring one end is connected with the crossbeam, and the other end is connected at the crossbeam lower shaft, and two springs are located the position that the both sides of pulley are close to the support column respectively, adopt sticky connected mode. This patent application adopts the cooperation of pulley and spring to use, the realization is taken yarn ware to the tensile control of yarn, but the spring is elastic element, its compensation tension is unstable, can't guarantee that yarn tension is constantly in optimum range, and also very limited to the controllable volume of yarn, when taking yarn ware removal route to exceed the yarn length that can control, the unable continuous control yarn tension of this patent application, consequently, and be not applicable to the long braider of migration distance, in addition, this structure is bulky, can't satisfy the numerous simultaneous working of taking yarn ware of figure, engineering application is limited.
The invention discloses a three-dimensional braided fabric weaving method and a special device, wherein a three-dimensional braided fabric is modeled by computer software, weaving process parameters are analyzed and calculated, motion steps and motion tracks of yarns are fitted, and then the parameters are issued to a rechargeable intelligent control motion module provided with a yarn carrier with tension control feedback, the intelligent control motion module moves on a weaving disc according to instructions issued by a computer, the weaving disc is divided into a plurality of virtual grids by a computer program, a motion path is divided by the intelligent motion control module according to time sequence and coordinates to drive the yarns to move, a lower motion unit acts to complete weaving, and an upper lifting mechanism lifts the woven preformed fabric upwards. The yarn carrier fits the movement steps of yarns through computer software and then controls the movement of the yarn carrier through a wireless network, a control module adopts a charging type, although the whole intelligence is strong, the size of the yarn carrier is increased due to the adoption of the wireless control module, the problems of heat dissipation, loss, installation and the like can be caused due to the adoption of charging type electric energy supply, in a large-sized knitting machine, if thousands of yarn carriers work together, the size of the yarn carrier and the problems reflected by the charging mode can be amplified infinitely, in addition, the cost of the whole-process intelligent control is also high, so the patent application can not meet the requirements of the large-sized three-dimensional knitting machine, and the engineering application is limited.
Disclosure of Invention
The invention provides a yarn carrier with an active yarn tension control function and a method for overcoming the defects of the prior art. The yarn carrier overcomes the periodic fluctuation of yarn tension in the traditional knitting machine, can actively control the yarn tension to be constant, enables the structure of the knitted fabric to be more stable and uniform, and improves the automation degree and the knitting efficiency of three-dimensional knitting.
A yarn carrier with an active yarn tension control function comprises a frame, a curling mechanism, a control module, a tension sensor, an electric energy transmission system and a yarn guide rod; the curling mechanism, the control module and the tension sensor are sequentially arranged on the upper part of the rack from top to bottom, and the electric energy transmission system is arranged on the lower part of the rack and connected with the rack;
the crimping mechanism comprises a yarn barrel, a motor supporting plate and upper connecting rods, the yarn barrel is connected with a main shaft of the motor, the motor is fixed at the top of the motor supporting plate, a plurality of upper connecting rods are arranged at the lower part of the motor supporting plate, the lower end of each upper connecting rod is connected with the upper surface of the rack, and the upper end of each upper connecting rod is fixed at the edge of the motor supporting plate;
the control module comprises a single chip microcomputer, a plurality of holes are drilled on the edge of a system plate of the single chip microcomputer for the upper connecting rod to pass through, and the single chip microcomputer is fixed in the middle of the upper connecting rod; the tension sensor is connected with the rack and fixed on the upper surface of the rack, and the lower end of the yarn guide rod is connected with the upper surface of the rack; tension sensor is connected with the singlechip communication, and the signal output part of singlechip links to each other with the signal input part of motor, electric energy transmission system passes electric system for slidingtype contact, includes: a current collecting unit and a rectifying unit; the current collection unit collects alternating current on the ground screen; the rectification unit comprises a rectifier, the rectifier is fixed on the lower surface of the rack, and the alternating current collected by the current collection unit is converted into direct current which can be directly used by the motor, the single chip microcomputer and the tension sensor.
A knitting method of a yarn carrier with the function of actively controlling the yarn tension comprises the following steps;
s1: the ground screen is connected with alternating current according to requirements, the conductive wheels move on the ground screen to collect the alternating current, the alternating current is transmitted to the rectifier and rectified into direct current, the direct current is transmitted to the motor, the single chip microcomputer and the tension sensor, and the yarn carrier starts to work;
s2: the yarn starts from the yarn bobbin, passes through the yarn guide rod to the tension sensor, then returns to the yarn guide rod, is conveyed out from the top end of the yarn guide rod for weaving, at the moment, the yarn tension meets the rated yarn tension, and the motor rotates positively to further rotate the yarn bobbin to pay off the yarn;
s3: the single chip microcomputer receives a tension signal transmitted by the tension sensor in real time, when displacement close to the direction of the braided fabric is generated, the yarn tension measured by the tension sensor is smaller than a rated yarn tension value, the single chip microcomputer sends a rewinding instruction to the motor, and the motor rotates reversely so that the yarn bobbin rotates reversely to take up the yarn;
s4: when the yarn tension measured by the tension sensor meets the rated yarn tension value again, the single chip microcomputer sends a release instruction to the motor, and the motor rotates forwards to further rotate the yarn bobbin to release the yarn;
s5: and when the weaving process is finished, the power supply of the ground net is disconnected, and all links stop working.
Compared with the prior art, the invention has the beneficial effects that:
1. the yarn tension control device actively controls the yarn tension through the mutual cooperation of the curling mechanism, the tension sensor and the control module, can uniformly release yarns at the optimal knitting speed, and can completely wrap redundant yarns under any condition, realizes unprecedented active yarn releasing and active yarn winding, can meet the requirement that any number of yarn carriers work simultaneously, is suitable for a large three-dimensional knitting machine, ensures that the yarn tension in the whole knitting process is in the optimal range, and improves the comprehensive mechanical property and the quality stability of the knitted fabric.
2. The electric energy transmission system is a sliding type contact power transmission mode, avoids the problem of power line winding of the yarn carrier in the working process caused by wired power supply, and also solves the problems of heat dissipation, service life and installation and replacement caused by battery power supply; the device is suitable for any working environment, ensures the continuous and stable current of the yarn carrier in the working process, and provides reliable energy guarantee for the effective control of the yarn carrier on the yarn.
3. The yarn carrier has compact structural design, all components are arranged in the vertical direction of the frame, the area of the maximum cross section of the yarn carrier is compressed to the maximum extent, the minimum volume under the condition that the working requirement can be met is ensured, and the maximum number of the yarn carriers which can be simultaneously involved in weaving is increased, so that the yarn carrier is suitable for a large three-dimensional weaving machine.
4. The winding mechanism adopts the motor to control the yarn barrel, has small volume and stable output power, and can deal with large-sized braided fabrics with any shape; the control module is controlled by the single chip microcomputer, so that the voltage and the energy consumption are low, the production and the installation are convenient, and the reliability is high; the tension sensor is used for detecting the tension of the yarn in real time, and the yarn tension measuring device is integrated and intelligent, accurate in data and simple to install.
The technical scheme of the invention is further explained by combining the drawings and the embodiment:
drawings
FIG. 1 is an overall three-dimensional schematic of the present invention;
FIG. 2 is a three-dimensional schematic view of a crimping mechanism;
FIG. 3 is a three-dimensional schematic view of a control module and detection mechanism;
FIG. 4 is a three-dimensional schematic view of a gantry;
FIG. 5 is a three-dimensional schematic view of a power delivery system;
fig. 6 is a schematic diagram of the current collection and transmission of the earth grid and the electric energy transmission system.
In the figure: 1 is a frame, 2 is a curling mechanism, 21 is a yarn barrel, 22 is a motor, 23 is a motor supporting plate, 24 is an upper connecting rod, 25 is a nut, 31 is a single chip microcomputer, 32 is a bolt, 41 is a tension sensor, 5 is an electric energy transmission system, 51 is a rectifier, 52 is a conductive wheel, 53 is a wheel frame, 54 is a lower connecting rod, 55 is a nut, 61 is a yarn guide rod, 71 is a conductive strip and 72 is an insulating strip.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1-3, a yarn carrier with active yarn tension control function comprises a frame 1, a curling mechanism 2, a control module, a tension sensor 41, an electric energy transmission system 5 and a yarn guide rod 61;
the curling mechanism 2, the control module and the tension sensor 41 are sequentially arranged on the upper part of the rack 1 from top to bottom, and the electric energy transmission system 5 is arranged on the lower part of the rack 1 and is connected with the rack 1;
the crimping mechanism 2 comprises a yarn drum 21, a motor 22, a motor supporting plate 23 and upper connecting rods 24, the yarn drum 21 is connected with a main shaft of the motor 22, the motor 22 is fixed at the top of the motor supporting plate 23, the lower part of the motor supporting plate 23 is provided with a plurality of upper connecting rods 24, the lower end of each upper connecting rod 24 is in threaded connection with the upper surface of the rack 1, and the upper end of each upper connecting rod 24 is fixed at the edge of the motor supporting plate 23; the upper end of the upper connecting rod 24 is fixed on the edge of the motor supporting plate 23 through two nuts A25, the two nuts are respectively used for fixing the upper surface and the lower surface of the motor supporting plate 23,
optionally, the upper surface of the motor supporting plate 23 is 5mm-8mm away from the top end of the upper connecting rod 24; the nut is convenient to fix and use, and the installation is reliable and stable.
The control module 3 comprises a single chip microcomputer 31, a plurality of holes are drilled on the edge of a system plate of the single chip microcomputer 31 for an upper connecting rod 24 to pass through, the single chip microcomputer is fixed in the middle of the upper connecting rod 24, a nut B32 is used for fixing the single chip microcomputer 31 in the middle of the upper connecting rod 24, a tension sensor 41 is connected with the rack 1 through a screw and fixed on the upper surface of the rack 1, the lower end of a yarn guide rod 61 is connected with the upper surface of the rack 1, the tension sensor 41 is in communication connection with the single chip microcomputer 31, and the signal output end of the single chip microcomputer 31 is connected with the signal input end of the motor 22. In the scheme, the single chip microcomputer 31 inputs a specific program to ensure that the control module 3 can analyze and process the yarn tension signal transmitted by the tension sensor 41 in real time, and sends a corresponding instruction to the motor 22 of the curling mechanism 2 according to the corresponding signal so as to control the release and the rewinding of the yarn.
Electric energy transmission system 5 is sliding type contact power transmission system, adopts the earth mat formula to pass the electricity, includes: a current collecting unit and a rectifying unit; the current collection unit collects alternating current on the ground screen; the rectifier unit comprises a rectifier 51, and the rectifier 51 is fixed on the lower surface of the frame 1 and converts the alternating current collected by the current collection unit into direct current which can be directly used by the motor 22, the single chip 31 and the tension sensor 41.
Typically, the motor 22 is preferably a miniature dc gearmotor.
Further, as a possible embodiment, the frame 1 is an oval thick plate, the upper part of which is provided with the curling mechanism 2 and the control module 3, and the lower part is provided with the power transmission system 5.
Preferably, the rated voltage of the motor 22 and the rated voltage of the tension sensor 41 are the same, and the speed of releasing the yarn from the bobbin 21 by the forward rotation of the motor 22 is the same as the running speed of the yarn during the knitting process. The rated voltage of the yarn bobbin 21 is the same as that of the rated voltage of the yarn bobbin and the yarn bobbin are guaranteed to be the same, and the principle of minimum size is met, so that the speed of the motor 22 for driving the yarn bobbin 21 to release the yarn in the forward rotation mode is guaranteed to be consistent with the running speed of the yarn in the weaving process.
The ground grid type electricity transmission is a sliding contact electricity transmission mode, the electricity collection unit comprises a conductive wheel 52, a conductive wheel frame 53 and lower connecting rods 54, the conductive wheel 52 is connected with the conductive wheel frame 53 in an insulation mode and can rotate 360 degrees relative to the conductive wheel frame 53, a plurality of lower connecting rods 54 are arranged at the upper part of the conductive wheel frame 53, the upper end of each lower connecting rod 54 is connected with the lower surface of the rack 1, and the lower end of each lower connecting rod 54 is fixed at the edge of the conductive wheel frame 53.
Generally, the number of the upper links 24 and the lower links 54 is 4, and this is provided to ensure stability of the connection with a minimum number.
The ground net type electricity transmission is a sliding contact electricity transmission mode, the ground net is conductive strips 71 which are laid in parallel on a plane or a curved surface, the conductive strips 71 are separated by insulating strips 72, adjacent conductive strips 71 are not connected with the same alternating current power supply, three conductive wheels 52 are arranged in an equilateral triangle shape, any two conductive wheels 52 and the adjacent conductive strips 71 form a loop, and the conductive wheels 52 collect alternating current from the ground net.
In a possible embodiment, as shown in fig. 6, at least 5 conductive strips are laid in parallel on a plane or a curved surface, each conductive strip is separated by an insulating strip 72, and adjacent conductive strips 71 are not connected with the same alternating current power supply (a zero line and a live line) so as to form the ground grid; the current collection unit collects alternating current from the ground screen through the three conductive wheels 52, the three conductive wheels 52 are arranged in an equilateral triangle shape, so that the single current collection unit can be ensured to run to where, the three conductive wheels 52 cannot be simultaneously positioned on the same conductive strip 71 on the ground screen, any two conductive wheels 52 and the adjacent conductive strips 71 on the ground screen form a loop, and the conductive wheels 52 collect the alternating current from the ground screen, so that the continuous and stable current is ensured.
Based on the above scheme, as a possible implementation mode, the alternating current transportation from the conductive wheel 52 to the rectifier 51 and the direct current transportation from the rectifier 51 to the motor 22, the single chip microcomputer 31 and the tension sensor 41 respectively adopt wired transportation, and 3-5 holes through which wires can pass are arranged at the edges of the rack 1 and the conductive wheel frame 53.
Based on the above scheme, as another possible embodiment, the knitting method of the yarn carrier for actively controlling the yarn tension comprises the following steps;
s1: the ground screen is connected with alternating current as required, the conductive wheel 52 moves on the ground screen to collect the alternating current, the alternating current is transmitted to the rectifier 51 and rectified into direct current, the direct current is transmitted to the motor 22, the single chip microcomputer 31 and the tension sensor 41, and the yarn carrier starts to work;
s2: the yarn starts from the bobbin 21, passes through the yarn guide rod 61 to the tension sensor 41, then returns to the yarn guide rod 61, and is conveyed out from the top end of the yarn guide rod 61 for weaving, at the moment, the yarn tension meets the rated yarn tension, the motor 22 rotates positively, and the bobbin 21 rotates to pay off the yarn;
s3: the single chip microcomputer 31 receives a tension signal transmitted by the tension sensor 41 in real time, when displacement close to the direction of the braided fabric is generated, the yarn tension measured by the tension sensor 41 is smaller than a rated yarn tension value, the single chip microcomputer 31 sends a rewinding instruction to the motor 22, the motor 22 rotates reversely, and then the yarn bobbin 21 rotates reversely to take in yarn;
s4: when the yarn tension measured by the tension sensor 41 meets the rated yarn tension value again, the single chip microcomputer 31 sends a release instruction to the motor 22, the motor 22 rotates forwards, and the yarn bobbin 21 rotates to release yarn;
s5: and when the weaving process is finished, the power supply of the ground net is disconnected, and all links stop working.
As a supplement, the program design requirements of the single chip microcomputer are as follows:
s1: setting a certain rated yarn tension value, and receiving a yarn tension signal measured by a detection mechanism in real time;
s2: when the yarn tension signal measured by the detection mechanism is judged to be larger than or equal to the rated value, a yarn releasing instruction is sent to the curling mechanism;
s3: and when the yarn tension signal measured by the detection mechanism is judged to be smaller than the rated value, a yarn rewinding command is sent to the curling mechanism.
As a supplement to the above, wherein:
s1: mounting of the tension sensor 41;
fixing a tension sensor 41 on the upper surface of the frame 1 by using a screw;
s2: mounting the control module 3;
the lower end of the upper connecting rod 24 is screwed into a threaded hole in the upper surface of the rack 1, the upper end of the upper connecting rod 24 penetrates through a corresponding hole of a system board of the single chip microcomputer 31, the system board of the single chip microcomputer 31 descends to the end of the upper end thread of the upper connecting rod 24 to be clamped, and then the nut 32 is screwed into the upper end of the upper connecting rod 24 and fastens the system board of the single chip microcomputer 31;
s3: mounting the curling mechanism 2;
screwing a nut A25 into the upper end of the upper connecting rod 24, stopping at a position 8-10 mm away from the upper end of the upper connecting rod 24, enabling the upper end of the upper connecting rod 24 to penetrate through a corresponding hole of the motor supporting plate 23, screwing the nut A25 into the upper end of the upper connecting rod 24 to fasten the motor supporting plate 23, ensuring that the position of each nut screwed into the upper connecting rod 24 is the same, fixing the motor 22 into a middle groove of the motor supporting plate 23 in a bolt or sticking mode, and inserting a main shaft of the motor 22 into a corresponding slot hole of the yarn barrel 21;
s4: installing a yarn guide mechanism 6;
the lower end of the yarn guide rod 61 is screwed into a threaded hole in the upper surface of the frame 1;
s5: installation of the electric energy transmission system 5;
the rectifier 51 is fixed on the lower surface of the frame 1 by screws, the upper end of the lower connecting rod 54 is screwed into a threaded hole on the lower surface of the frame 1, the lower end of the lower connecting rod 54 is inserted into a hole on the edge of the conductive wheel frame 53, the conductive wheel frame 53 is fastened by a nut B55, and the conductive wheel 52 is mounted on the lower surface of the conductive wheel frame 53 in a universal (in a 360-degree rotation manner) insulating manner.
The present invention is not limited to the above embodiments, and any person skilled in the art can make various changes and modifications to the above-described structures and technical contents without departing from the technical scope of the present invention.
Claims (6)
1. The utility model provides a possess active control yarn tension function take yarn ware which characterized in that: comprises a frame (1), a curling mechanism (2), a control module, a tension sensor (41), an electric energy transmission system (5) and a yarn guide rod (61);
the curling mechanism (2), the control module (3) and the tension sensor (41) are sequentially arranged on the upper part of the rack (1) from top to bottom, and the electric energy transmission system (5) is arranged on the lower part of the rack (1) and connected with the rack (1);
the crimping mechanism (2) comprises a yarn drum (21), a motor (22), a motor supporting plate (23) and upper connecting rods (24), the yarn drum (21) is connected with a main shaft of the motor (22), the motor (22) is fixed to the top of the motor supporting plate (23), the lower portion of the motor supporting plate (23) is provided with the plurality of upper connecting rods (24), the lower end of each upper connecting rod (24) is connected with the upper surface of the rack (1), and the upper end of each upper connecting rod (24) is fixed to the edge of the motor supporting plate (23);
the control module comprises a single chip microcomputer (31), a plurality of holes are formed in the edge of a system plate of the single chip microcomputer (31) and are used for the upper connecting rod (24) to pass through, and the single chip microcomputer (31) is fixed in the middle of the upper connecting rod (24); the tension sensor (41) is connected with the rack (1) and fixed on the upper surface of the rack (1), the lower end of the yarn guide rod (61) is connected with the upper surface of the rack (1), the tension sensor (41) is in communication connection with the single chip microcomputer (31), and the signal output end of the single chip microcomputer (31) is connected with the signal input end of the motor (22);
the electric energy transmission system (5) is a sliding type contact power transmission system, and comprises: a current collecting unit and a rectifying unit; the current collection unit collects alternating current on the ground screen; the rectifying unit comprises a rectifier (51), the rectifier (51) is fixed on the lower surface of the rack (1), and the alternating current collected by the current collecting unit is converted into direct current which can be directly used by the motor (22), the single chip microcomputer (31) and the tension sensor (41).
2. A yarn carrier with active control of yarn tension as in claim 1, wherein: the current collection unit comprises a conductive wheel (52), a conductive wheel frame (53) and lower connecting rods (54), wherein the conductive wheel (52) is in insulation connection with the conductive wheel frame (53) and can rotate 360 degrees relative to the conductive wheel frame (53), the upper part of the conductive wheel frame (53) is provided with a plurality of lower connecting rods (54), the upper end of each lower connecting rod (54) is connected with the lower surface of the rack (1), and the lower end of each lower connecting rod (54) is fixed at the edge of the conductive wheel frame (53).
3. A yarn carrier with active control of yarn tension as in claim 1, wherein: the rated voltage of the motor (22) and the rated voltage of the tension sensor (41) are the same, and the motor (22) rotates forwards to drive the yarn barrel (21) to release the yarn at the speed consistent with the running speed of the yarn in the weaving process.
4. The yarn carrier with active yarn tension control function according to claim 2, characterized in that: the ground net is the conducting strips (71) laid in parallel on a plane or a curved surface, the conducting strips (71) are separated by insulating strips (72), adjacent conducting strips (71) are not connected with the same alternating current power supply, the three conducting wheels (52) are arranged in an equilateral triangle shape, any two conducting wheels (52) and the adjacent conducting strips (71) form a loop, and the conducting wheels (52) collect alternating current from the ground net.
5. The active yarn tension control of claim 4, wherein: alternating current transmission from the conductive wheel (52) to the rectifier (51) and direct current transmission from the rectifier (51) to the motor (22), the single chip microcomputer (31) and the tension sensor (41) respectively adopt wired transmission, and holes through which wires can pass are formed in the edges of the rack (1) and the conductive wheel frame (53).
6. A method of knitting a yarn carrier having an active yarn tension control function according to claim 1, characterized in that: comprises the following steps;
s1: the ground net is connected with alternating current according to requirements, the conductive wheel (52) moves on the ground net to collect the alternating current, the alternating current is transmitted to the rectifier (51), the direct current is rectified, the direct current is transmitted to the motor (22), the single chip microcomputer (31) and the tension sensor (41), and the yarn carrier starts to work;
s2: the yarn starts from the yarn bobbin (21), passes through the yarn guide rod (61), reaches the tension sensor (41), returns to the yarn guide rod (61), is conveyed out from the top end of the yarn guide rod (61) to be woven, at the moment, the yarn tension meets the rated yarn tension, the motor (22) rotates positively, and then the yarn bobbin (21) rotates to pay off the yarn;
s3: the single chip microcomputer (31) receives tension signals transmitted by the tension sensor (41) in real time, when displacement close to the direction of the knitted fabric is generated, the yarn tension measured by the tension sensor (41) is smaller than a rated yarn tension value, the single chip microcomputer (31) sends a rewinding instruction to the motor (22), and the motor (22) rotates reversely so that the yarn bobbin (21) rotates reversely to take up yarn;
s4: when the yarn tension measured by the tension sensor (41) meets the rated yarn tension value again, the single chip microcomputer (31) sends a release instruction to the motor (22), the motor (22) rotates positively, and then the yarn bobbin (21) rotates to release yarn;
s5: and when the weaving process is finished, disconnecting the power supply of the ground net, and stopping all links.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210927576.7A CN115287818B (en) | 2022-08-03 | 2022-08-03 | Yarn carrier with function of actively controlling yarn tension and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210927576.7A CN115287818B (en) | 2022-08-03 | 2022-08-03 | Yarn carrier with function of actively controlling yarn tension and method |
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| CN115287818A true CN115287818A (en) | 2022-11-04 |
| CN115287818B CN115287818B (en) | 2023-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116334834A (en) * | 2023-03-07 | 2023-06-27 | 天津工业大学 | Yarn carrier with semi-active tension compensation function and working method |
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| CN115287818B (en) | 2023-08-04 |
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