550 results about "Yarn tension" patented technology

This utility model discloses a yarn tension adjusting device for textile machinery, including a support plate. A first motor is fixedly connected to the upper surface of the support plate, and a lead screw is fixedly connected to the output end of the first motor. A slider is threadedly connected to the outer surface of the lead screw, and a connecting plate is fixedly connected to the front surface of the slider. A lifting block is fixedly connected to the lower surface of the connecting plate. The first and second limiting plates can block the yarn, preventing it from tangling during transport to the textile machinery and thus avoiding interference with yarn processing. The second motor, first guide post, and second guide post structure ensure that when the yarn comes into contact with the first and second guide posts, activating the second motor causes the first and second guide posts to rotate at a uniform speed, making the yarn more stable during transport to the textile machinery.

The invention relates to the technical field of sizing machines, and discloses a tension detection and control method for a sizing machine, and the method comprises the steps: obtaining the distance between length measurement rollers, a yarn process parameter and a yarn transmission path; performing tension calculation according to the distance between the length measuring rollers and the yarn process parameters to obtain yarn tension; associating the yarn tension with the yarn transmission path to obtain a tension node diagram; according to the tension node graph and a preset tension threshold value, carrying out anomaly judgment to obtain an abnormal node; performing ant colony tracing according to the abnormal node and the tension node graph to obtain an abnormal starting node; and marking corresponding yarns according to the abnormal starting node, and pulling out the connected warp beam. The method has the advantages that the abnormal yarn area can be accurately detected, and the tension detection accuracy of the sizing machine is improved.

The invention discloses monofilament prepreg yarn dry-method winding equipment and a tension control method, and relates to the technical field of composite material forming, the monofilament prepreg yarn dry-method winding equipment comprises an unwinding yarn box, a yarn roll is connected with a driving motor and used for outputting yarn, the yarn is wound on a hook leg buffer mechanism after being led out of the yarn roll, and the hook leg buffer mechanism is used for adjusting the tension of the yarn; a main shaft is rotatably arranged on the gantry frame in the length direction, and a mold is arranged on the main shaft; the moving trolley is in sliding connection with the gantry frame in the length direction of the gantry frame, the moving trolley is provided with a yarn winding nozzle, the yarn winding nozzle corresponds to the mold, and the yarn enters the yarn winding nozzle after being led out of the hook leg buffering mechanism and is wound on the mold. According to the invention, high-speed automatic winding of monofilament prepreg yarns can be realized, the automation degree is high, and the production efficiency is improved. The yarn tension output by each yarn roll is independently adjusted based on the tension after stranding, the control precision of the yarn tension is improved, the tension is kept stable, and therefore the yarn winding quality is improved.

The invention relates to the technical field of heald frame self-adaptive control, and discloses a spinning heald frame self-adaptive control system and method.The spinning heald frame self-adaptive control system comprises a sensor set used for collecting heald frame displacement, yarn tension and fabric surface state data in real time and generating heald frame state data, and the input end of a defect detection module is connected with the sensor set; receiving the checked yarn tension and fabric surface state data, performing defect detection on the fabric surface state data, generating a suppression signal for abrupt change of heald frame acceleration according to correlation analysis of a fabric state rating signal and real-time displacement, dynamically deciding and receiving a defect identification result, querying a defect type mapping table, and determining whether the defect type mapping table is abnormal or not. According to the method, a control parameter forced priority sequence is determined, weft errors and tension changes on the surface of the fabric are judged, self-adaptive adjustment of the spinning heald frame through weaving state detection is achieved, and weaving accuracy is improved.

The invention relates to the field of textile control, in particular to a tension control method and system of a high-speed loom. The method comprises the following steps: firstly, obtaining the tension fluctuation degree of each moment according to the tension data difference of the loom at each moment and the tension data distribution of each moment in a preset time domain of each moment, clustering all moments to obtain a first cluster, and obtaining the tension fluctuation degree of each moment according to the tension data distribution of each moment in each first cluster; the method comprises the steps of obtaining a change state value of each first clustering cluster according to the tension fluctuation degree of each first clustering cluster and the difference of the tension fluctuation degree of each first clustering cluster at each moment, further clustering all the first clustering clusters to obtain second clustering clusters, and obtaining the tension change degree of the loom according to the position distribution of each first clustering cluster in each second clustering cluster. And performing PID control on the loom according to the deviation condition of the tension data of the loom at the current moment and the tension change degree. The control effect on the yarn tension of the high-speed loom can be improved.

The invention discloses a yarn tension balancing device of a weaving machine, which belongs to the technical field of weaving machine yarns and comprises a weaving machine body, and two sides of the weaving machine body are rotatably connected with a yarn winding roller and a yarn scaling roller respectively; according to the yarn tension balancing device of the weaving machine, the yarn winding roller is driven to rotate, the air conveying assembly is driven to rotate as a whole and is matched with the driving part, so that air in the air cylinder enters the spiral strip-shaped air bag in a reciprocating mode through the air conveying pipe, and the spiral strip-shaped air bag on the rotating yarn winding roller slowly expands outwards; the outer elastic sleeve is expanded and enlarged, yarns on the yarn winding roller are expanded outwards, gaps between the yarns are reduced, winding and winding are tighter, when the yarns are wound tightly, the size of a yarn roll can be obviously reduced, the rental area of a warehouse can be reduced, the storage cost can be reduced, the layout of the warehouse can be more reasonable, and the service life of the warehouse can be prolonged. Stock management is facilitated, deformation of the yarn roll can be prevented, and the overall strength and stability of the yarn roll are enhanced.

The invention relates to the technical field of spinning quality detection, and discloses a jute spinning product quality detection method and system based on an intelligent sensor. The method comprises the following steps: acquiring real-time process parameters of a jute spinning production line, and synchronously capturing yarn surface temperature field distribution in combination with an infrared thermal imager; performing space-time alignment processing on the yarn tension fluctuation data and the temperature field distribution to generate a fused dynamic process characteristic matrix; according to the tension gradient change rate and the temperature field abnormal region coordinates in the dynamic process characteristic matrix, dividing potential occurrence sections of yarn quality defects; a microstructure image of the yarn in the potential generation section is extracted, a fiber arrangement angle deviation value is measured through a polarized light interferometer, and fiber molecular bond vibration frequency data is obtained in combination with a Raman spectrometer; and inputting the fiber arrangement angle deviation value and the molecular bond vibration frequency data into a cascade quality analysis model, and outputting a quantitative index set of the internal structure defects of the yarns.

The utility model relates to the technical field of textile yarns, in particular to a textile yarn tension adjustment device, comprising an operating table, a pressure plate is provided at the upper end of the first connecting rod, a positioning tip is provided at the upper end of the second connecting rod, the gear matches the positioning tip, a vortex spring is provided on the surface of the gear close to the second roller, one end of the two vortex springs away from the gear is connected to the second roller, a plurality of fixing rods are provided on the surface of the second roller, and a plurality of V-shaped notches are provided on the upper ends of the fixing rods. The utility model first pulls the yarn under the pressure plate, then presses the yarn onto the first roller on the left, then passes the yarn under the first roller on the right, and finally presses the yarn into the V-shaped notch set on the fixing rod, then selects the rotating gear, and engages the second connecting rod with the gear. Under the action of the second spring, the gear is firmly clamped; there is no threading work, which reduces the operation time.

The invention relates to the technical field of spinning yarn untwisting speed regulation, and particularly discloses an untwisting speed regulation method for vortex spinning yarn twist test, which comprises the following steps: additionally arranging a current sampling module in a motor background system of an untwisting motor, and monitoring the working current of the untwisting motor at the current moment in the spinning yarn untwisting process in real time; determining a first predicted tension of the spinning yarn of the target specification at the current moment; the method comprises the following steps of: monitoring swinging parameters of a free swinging yarn guide hook in each swinging period in real time through the free swinging yarn guide hook mounted on a spinning yarn untwisting path; comprehensively calculating a second predicted tension of the spinning yarn of the target specification at the current moment; and finally, the predicted tension of the target specification spinning yarn at the current moment is comprehensively determined, the untwisting speed of the target specification spinning yarn at the current moment is correspondingly adjusted based on the predicted tension, and by monitoring and adjusting the yarn tension in real time, the product quality and the production efficiency can be improved, the service life of equipment can be prolonged, and the cost can be reduced.

The invention relates to the field of warp knitting machines, in particular to a weft selecting trolley with a yarn tension adjusting function, which comprises a weft selecting trolley unit and can monitor the tension state of yarns in real time by arranging a capacitive proximity switch: when the yarns are loose, the capacitive proximity switch does not send out a signal, a system automatically triggers a tension adjusting mechanism, and the tension state of the yarns is adjusted; the assembly mounting plate is pulled through the driving mechanism to ensure that the yarn is always in a tensioned state, the yarn loosening phenomenon in the weft laying process is effectively avoided, the tensioning of the yarn can be automatically adjusted, all the yarn clamping units can be controlled through the adjusting unit to clamp the yarn, and the yarn laying efficiency is improved. Synchronous work of yarn clamping of the clamping assemblies and the capacitive proximity switch is achieved through the adjusting piece, single adjustment of the single assembly mounting plate in the yarn clamping state can be achieved through cooperation of the adjusting piece and the guide frame, the synchronous adjusting plate drives the clamping assemblies on the two sides to synchronously move through the limiting sliding grooves, and it is guaranteed that clamping force is evenly distributed; yarn deviation or distortion is avoided, and weft laying quality is improved.

The invention belongs to the technical field of textile, and discloses a reinforcement learning and physical modeling combined broken end dynamic capturing method and system. The method comprises the following steps: constructing a yarn microstructure evolution model; inputting real-time environment parameters of the textile workshop into the microstructure evolution model, and predicting to obtain real-time microstructure parameters of the yarn; performing nonlinear coupling feature extraction on the real-time environment parameters, and calculating an environment coupling feature vector; inputting the real-time microstructure parameters as material attributes into a yarn tension dynamical equation, and solving to obtain a predicted yarn macroscopic stress state; splicing the macroscopic stress state of the yarn and the environment coupling feature vector to form a state observation value; the reinforcement learning agent outputs a broken end risk probability value according to the state observation value; and when the broken end risk probability value exceeds a preset threshold value, generating and outputting a broken end early warning signal. According to the invention, early and accurate early warning of yarn breakage in a complex dynamic environment can be realized.

The invention relates to the technical field of carbon fiber prepreg cloth production, and discloses a low-gram-weight yarn spreading device for carbon fiber prepreg cloth, which comprises a rack, and a modular yarn releasing unit, a hot roller yarn spreading unit and an airflow auxiliary yarn spreading unit which are arranged on the rack, the hot roller yarn spreading unit comprises at least three hot roller groups, the airflow auxiliary yarn spreading unit comprises an airflow nozzle assembly and an airflow buffer plate which are oppositely distributed up and down, the airflow nozzle assembly sprays airflow and is used for transversely pushing away fibers to assist yarn spreading, and the airflow buffer plate releases the airflow to form an air cushion to buffer yarn tension fluctuation. According to the low-gram-weight yarn spreading device for the carbon fiber prepreg cloth, the hot roller yarn spreading unit and the airflow auxiliary yarn spreading unit cooperate, efficient yarn spreading is achieved, meanwhile, the airflow buffer plate releases low-pressure airflow, an air cushion is formed, tension fluctuation is absorbed, and the yarn breaking rate is reduced.

The utility model relates to the technical field of tension regulators, in particular to a traditional spinning yarn tension regulator, which is characterized in that a yarn main body is pulled by a traction device to slide along a quartz wheel and three yarn wheels in sequence, and in the process, the quartz wheel and the three yarn wheels apply pressure to the yarn main body from different angles; when the yarn inlet end is clamped, the yarn body in the adjusting device can be tensioned, the tensioned yarn body can apply pressure to the yarn wheel, the yarn wheel can apply pressure to the spring through the sliding block, the spring is shrunk, the tensile force borne by the yarn body is converted into the elastic force of the spring, and the yarn body is tensioned. Meanwhile, the bent yarn main body can be straightened, more yarn main bodies are released, the length pulled by the traction device is supplemented, the tensile force borne by the yarn main body is shared through the yarn wheel capable of sliding, and the effect that the yarn main body is prevented from being snapped by the traction device due to the fact that the yarn inlet end is clamped is achieved.

The invention discloses a warp rebeaming machine unwinding device with a tension adjusting device and a using method thereof.The warp rebeaming machine unwinding device comprises a creel, a warp fixing frame is fixedly installed on the creel, a warp beam is rotatably installed on the warp fixing frame, a yarn guide arrangement plate is fixedly installed on the creel, a winding shaft is rotatably installed on the creel, and a tension adjusting device is installed on the winding shaft. A tension balancing mechanism located between the yarn guide row plate and the winding shaft is installed on the creel, a winding motor is fixedly installed on the creel, and an output shaft of the winding motor is fixedly connected with the winding shaft. According to the warp yarn rebeaming device, when the tension of the inlet yarn changes due to factors such as environment or warp yarn, the supporting capacity of the dynamic tension wheel is adjusted in real time, the tension of the warp yarn is kept constant, and the problem that the tension of the yarn is unstable, so that the tension of the warp yarn is not uniform after rebeaming is solved; the reaction to tension change is more sensitive and reliable, and the winding quality after warp rebeaming is balanced and stable.

The invention discloses textile winding equipment with a tension detection function, and relates to the technical field of tension detection, the textile winding equipment comprises a double-station winding machine, the double-station winding machine comprises a base and a rotating frame, an electric control part is arranged above the base, two winding shafts are rotatably arranged on one side of the rotating frame and are horizontal to each other, the outer walls of the winding shafts are sleeved with yarn bobbins, and the yarn bobbins are arranged on the rotating frame. The rotating frame is controlled by the electric control part to rotate so that the positions of the two winding shafts can be switched, and a tension detection mechanism is arranged at the yarn inlet end of the double-station winding machine and used for monitoring yarn tension in real time. The problems that in the prior art, when yarn is wound, a tension wheel generally only has the tension adjusting function, the tension cannot be monitored in real time, then adjustment cannot be conducted in time when the tension is abnormal, and yarn breakage is caused are solved. The yarn winding device has the advantages that the tension is monitored in real time through the tension detection mechanism in the yarn winding work, and when the tension is abnormal, processing can be conducted in time.

The utility model relates to a yarn surface sizing device and relates to the technical field of yarn sizing, in order to solve the problem that yarn transmission is prone to being too loose or too tight, the yarn surface sizing device comprises a rack, and a pay-off mechanism, a transmission mechanism, a sizing mechanism, a mud jacking mechanism and a drying mechanism are arranged on the rack; the pay-off mechanism comprises a pay-off roller, two tensioning air cylinders and two bearing plates, the pay-off roller is rotationally arranged between the two bearing plates, the two bearing plates are arranged on the rack, the two tensioning air cylinders correspond to the two bearing plates respectively, cylinder bodies of the tensioning air cylinders are hinged to the rack, the output ends of the tensioning air cylinders are hinged to the bearing plates, and the output ends of the tensioning air cylinders are hinged to the bearing plates. The ends, away from the tensioning air cylinders, of the bearing plates are hinged to the rack, and one bearing plate is provided with a driving piece used for driving the pay-off roller to rotate. The yarn tension adjusting device has the effects of accurately adjusting the yarn tension in real time and improving the product quality and consistency.

The invention relates to the technical field of spinning. The invention relates to a yarn twist control method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining yarn type information, setting target twist information according to the yarn type information, setting a forward twist value and a reverse twist value according to the target twist information, monitoring the tension change of the yarn in the twist change process in real time, and controlling the twist of the yarn according to the tension change. Yarn tension information is obtained, the yarn tension information, the forward twist value and the reverse twist value are input into the trained twist and tension relation model, an output result of the twist and tension relation model is obtained, and twist parameters of the yarn are dynamically adjusted according to the output result of the twist and tension relation model. The device has the effect of improving the yarn quality and the production efficiency.

The invention discloses a yarn conveying method, device and system, a storage medium and a dyeing and embroidering system. The yarn conveying method comprises the steps that the real-time yarn feeding length and the set yarn feeding length of the current needle sequence are obtained; determining a yarn feeding deviation value based on the real-time yarn feeding length and the set yarn feeding length; using the yarn feeding deviation value to determine the candidate yarn feeding length of the next needle sequence adjacent to the current needle sequence; the current tension of the yarn is obtained, and the candidate yarn feeding length is adjusted based on the current tension so as to obtain the target yarn feeding length for the rear needle sequence. According to the yarn feeding method and device, the deviation is made between the real-time yarn conveying amount and the set amount, the yarn feeding amount is dynamically adjusted on the basis of the deviation and the current yarn tension, feedback data of the dyeing equipment and feedback data of the weaving and embroidering equipment can be linked, and accurate yarn feeding is achieved.

The invention provides a constant tension control automatic yarn take-up and pay-off yarn carrier and a control method thereof, and belongs to the technical field of three-dimensional weaving, the constant tension control automatic yarn take-up and pay-off yarn carrier comprises a spring thread guide mechanism, a yarn guide rod and a yarn bobbin, the spring thread guide mechanism, the yarn guide rod and the yarn bobbin are all fixedly installed on a base, the yarn bobbin is driven by a motor, and the motor is connected with a battery and a single-chip microcomputer. When the yarn tension adjusting device works, the real-time tension value of the yarn is compared with the set tension value, then the corresponding actual output value is calculated through the PID algorithm, and the motor is driven to rotate so as to drive the yarn cylinder to rotate to collect and release the yarn, so that the yarn tension is adjusted. The device is simple in structure, external power supply is not needed during working, the influence of a yarn path on the yarn quality in the yarn winding and unwinding process is small, the tension can be rapidly and accurately adjusted, the tension is kept at a set value, extremely high universality is achieved, the knitting efficiency and the quality of knitted fabric can be improved, and development of the three-dimensional knitting technology and expansion of the application range are promoted.

The invention discloses a yarn tension detection mechanism, and relates to the technical field of yarn tension detection, the yarn tension detection mechanism comprises a detection table, and also comprises a single multi-section tension detection mechanism installed at the top of the detection table; according to the invention, the center tightening mechanism is installed to make the yarn in a tensioning state before segmentation, the tensioning degree and length of multiple segments of yarns are kept consistent, the consistency of detection results is guaranteed, the multiple segments of isolation clamping mechanisms are installed to divide a single yarn into multiple segments of detection segments, the multiple segments of yarns are isolated, mutual influence of the multiple segments of yarns is avoided, and the detection efficiency is improved. The method comprises the following steps of: arranging a yarn humidifying mechanism, monitoring tension data of the yarn in real time, selectively humidifying the yarn by adding a specified amount by installing the yarn humidifying mechanism, and testing the tension of the yarn by utilizing a single multi-section tension detection mechanism after humidifying, so as to obtain the tension data of the yarn with different humidity and obtain the performance of the yarn in different environments; and evaluating the yarns according to the performance data.

The utility model relates to the technical field of yarn adjustment, in particular to a warp knitting machine yarn tension self-adaptive adjusting mechanism which comprises a main machine body, the main machine body can be installed on a warp knitting machine and used for adjusting yarn tension, and a tension adjusting system capable of adjusting the yarn tension is arranged in the center of the main machine body. The tension adjusting system comprises a plurality of tension fine adjustment assemblies capable of finely adjusting yarn and an adjusting assembly used for driving the tension fine adjustment assemblies to rotate, and further comprises a rotating assembly arranged on the main machine body and used for driving the tension fine adjustment assemblies and the adjusting assembly to move. The rotating assembly comprises two rotating plates rotationally arranged on the main machine body. Through the synergistic effect of the tension fine adjustment assembly, the adjusting assembly and the rotating assembly, the yarn tension adjusting device can adjust the tension of yarn in a self-adaptive mode, and is simple in adjusting structure and rapid in adjustment.

The invention relates to the technical field of yarn tension detection, in particular to a textile yarn tensile property detection device with a multi-section detection function, which comprises a rack and a stretching frame, and a plurality of mounting frames are arranged on the rack; a detection mechanism is arranged on each mounting frame, a clamping assembly is arranged on each detection mechanism, and a detection unit is arranged on each clamping assembly; through the arrangement of the multiple mounting frames and the detection mechanisms, multi-section synchronous detection can be achieved on the same yarn, it is not needed to repeatedly cut and clamp the yarn in the prior art, the manual operation amount is greatly reduced, and the detection efficiency is remarkably improved. Every two adjacent detection mechanisms are distributed in a bilateral symmetry mode with the yarn as the symmetry axis and move synchronously and relatively, it is ensured that the yarn is evenly divided into a plurality of independent detection sections with the same length, the overall tensile property and uniformity of the yarn can be evaluated more comprehensively and accurately through comprehensive analysis of data of the multiple detection sections, and the yarn quality is improved. And local weak links can be found in time.

To adjust thread delivery amount between an upper looper thread T3 and a lower looper thread T4 and individually adjust thread tension so that the upper looper thread T3 and the lower looper thread T4 do not restrict each other.SOLUTION: An overcasting sewing machine 100 comprises: a first input part 32 to move a needle thread adjusting part 24 along an intersection direction; a second input part 33 to interlock and move an upper looper thread adjusting part 25 and a lower looper thread adjusting part 26 along the intersection direction; an adjustment interlocking part 27 to interlock the upper looper thread adjusting part 25 and the lower looper thread adjusting part 26 during movement of the needle thread adjusting part 24; and a third input part 37 to input adjustment of relative positions along the intersection direction of a thread locking part 251 of the upper looper thread adjusting part 25 and a thread locking part 261 of the lower looper thread adjusting part 26 while allowing interlocking by the second input part 33 and the adjustment interlocking part 27.SELECTED DRAWING: Figure 16

The invention relates to the technical field of automatic control in the textile industry, and discloses an automatic control system of a doffer, which comprises a sensing module, a decision control module, an execution module, an energy consumption management module and a fault monitoring and maintenance module. Through a multi-dimensional data acquisition and intelligent control technology, each link of operation of the doffer can be comprehensively covered, conventional mechanical action execution is concerned, factors such as spindle posture, yarn tension, equipment energy consumption and vibration state are also included, and an intelligent algorithm is deeply integrated to carry out working condition analysis and instruction generation; doffing control can meet production requirements more accurately, and powerful support is provided for efficient development of doffing operation.

The invention discloses a direct untwisted yarn glass fiber warp beam manufacturing process, which comprises the following steps that a single untwisted yarn is manually led out from a creel, sequentially passes through a hole in a yarn guide porcelain plate, a second auxiliary roller, a first auxiliary roller, a raddle and a third auxiliary roller, and is finally connected to a warp beam, and the yarn is ensured not to be wound and crossed in the threading process, so that the untwisted yarn is directly spun. The denting density is consistent with the design of a warp beam, and then tension is set, so that an electronic tension system in a case adjusts the tension of each yarn in real time; a third motor is started to drive the rotating shafts to rotate, the rotating shafts on the two sides and the lead screws synchronously rotate under belt connection, the ball sliding blocks and the limiting barrels are driven to slide along the sliding rails, the distance between the limiting barrels and the warp beam is shortened, and the limiting barrels are attached to the untwisted yarn; meanwhile, the first motor drives the push rod to rotate through the rotating disc, so that the push rod slides along the sliding groove of the sliding groove plate, the push rod and the sley are driven to reciprocate in the horizontal direction, and the untwisted yarn can be evenly wound on the warp beam to avoid accumulation.

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

The invention relates to the technical field of warp knitting machines, in particular to a yarn tension control system of a warp knitting machine, which comprises an adjusting mechanism, the adjusting mechanism comprises a motor, the output end of the motor is rotatably connected with a first gear, the end face of the first gear is rotatably engaged with a second gear, and the surfaces of the first gear and the second gear are provided with first connecting rods; second connecting rods are rotatably connected to the surfaces of the first connecting rods, third connecting rods are rotatably connected to the surfaces of the second connecting rods, grooves are formed in the side walls of the mounting seats, springs are arranged on the bottom surfaces of the grooves, sliding seats are arranged at the top ends of the springs, and first yarn guide rollers are rotatably mounted on the side walls of the sliding seats. According to the yarn guide roller, the contact area is increased, the pressure on the area is reduced, abrasion and deformation of the yarn caused by too large local pressure are effectively reduced, after the contact area is increased, friction force between the yarn and the first yarn guide roller is distributed more evenly, and the problem of hairiness yarn breakage caused by too large local friction is avoided.

The invention discloses a yarn binding tension control method for a cable former. The yarn binding tension control method comprises the following steps: determining a tension correction coefficient A; setting an initial tension set value B; the static tension of the equipment in static or low-speed operation is calculated through the tension correction coefficient A and the tension set value B; setting a yarn binding production speed C; determining a tension speed coefficient D; calculating the dynamic tension of the equipment during operation or acceleration by using the production speed C and the tension speed coefficient D; setting a yarn binding length coefficient E according to the actual length of the yarn binding; and calculating the final output tension of the bundled yarn by using the static tension, the dynamic tension and the bundled yarn length coefficient E. By means of the mode, the yarn binding tension control method of the cable former optimizes the yarn binding tension adjusting process, reduces the workload of production technicians during debugging, quantifies yarn binding tension adjustment, avoids the problem that the high speed and the low speed of yarn binding tension are inconsistent, enables the twisting state of cable cores to be integrally consistent, and guarantees the product quality.

The utility model discloses a yarn tension linear change control mechanism and a bobbin winder and relates to the technical field of textile instruments. The yarn tension linear change control mechanism comprises a yarn clamping assembly and a yarn tension control assembly, the yarn clamping assembly comprises a support, a fixed clamping piece, a movable clamping piece, a weight applying piece and a first connecting rope, the fixed clamping piece is fixed to the support, the movable clamping piece is rotatably installed on the support, and the weight applying piece is connected with the movable clamping piece through the first connecting rope; the tension adjusting assembly comprises a swing arm, a supporting piece, a rope wheel and a second connecting rope, the swing arm can rotate around the middle of the swing arm, the supporting piece and the rope wheel are installed at the two ends of the swing arm respectively, the supporting piece supports the first connecting rope, the rope wheel is connected with one end of the second connecting rope, and the other end of the second connecting rope is used for being connected with a cradle arm connected with the end of the winding spool. During working, the transverse component force of the weight applying piece on the movable clamping piece is linearly reduced along with the increase of the winding diameter of the yarn on the winding yarn drum, and the effect that the tension of the yarn is linearly reduced is achieved.

The invention discloses a device and process of controlling / stabilizing tension in a filament / monofilament, flat / fibrillated tape or yarn while winding it on a core in a winding machine. More particularly, it discloses a multistage tension control device to precisely control the tension in winding of low denier yams as low as up to 15 denier or so. The initial stage of the device has a stabilization roller unit (1) and the last stage comprises a moving arm mechanism (7). The stabilization roller unit (1) comprises a yarn aligner support (4), a positively driven accumulator roller (3), a stabilization roller (2). The moving arm mechanism comprises a moving guide wheel (8), a moving arm (9), a pivot pin (14), a moving arm stopper (12), an exit guide wheel (10), a low friction cylinder (16), and a balance weight (15). The device and the process of invention improves the bobbin quality.