33results about How to "Achieve constant tension" patented technology

The invention relates to a constant-tension zero-twist fiber unfolding and winding device. An active unwinding device, a yarn guiding and buffering device, a zero-twist fiber unfolding device, a winding device and a reciprocating device are included. The active unwinding device conducts unwinding operation on yarn on a spool. The yarn guiding and buffering device conducts the guiding movement on the yarn and provides buffering power, and the yarn is prevented from being snapped. The zero-twist fiber unfolding device conducts guiding and fiber unfolding operation on the yarn. The winding devicewinds the yarn obtained after fiber unfolding. The reciprocating device drives the zero-twist fiber unfolding device to reciprocate. The active unwinding device and the yarn guiding and buffering device are connected, the zero-twist fiber unfolding device is connected with the yarn guiding and buffering device and loaded on the end face of the reciprocating device, and the winding device is connected with the zero-twist fiber unfolding device. By means of the constant-tension zero-twist fiber unfolding and winding device, yarn unwinding, fiber unfolding and winding are finished in one device,and practicability and work efficiency of the constant-tension zero-twist fiber unfolding and winding device are improved. Meanwhile, the invention further relates to an operation method of the constant-tension zero-twist fiber unfolding and winding device.

The invention discloses a material unwinding system and a material unwinding control method. The system comprises an unwinding trolley, a drive mechanism and an unwinding support. The unwinding trolley comprises a material roller and a mat cloth roller, wherein the material roller and the mat cloth roller are supported on the unwinding trolley in a rotating manner. The drive mechanism comprises amaterial unwinding motor connected with the material roller in a transmission manner, and a mat cloth rolling motor connected with the mat cloth roller in a transmission manner. The material unwindingsystem further comprises a distance measuring sensor and a control unit. The control unit can obtain the cumulative remaining thickness of materials wound around the material roller in real time based on measuring data of the distance measuring sensor, according to the material cumulative remaining thickness obtained in real time, the control unit can calculate the length of the materials currently wound around the material roller and the cumulative rolling thickness of mat cloth rolled on the mat cloth roller in real time, and according to the cumulative rolling thickness of the mat cloth rolled on the mat cloth roller, the control unit can control output torque of the mat cloth rolling motor. The system and the method can achieve constancy of tension of the mat cloth in the material unwinding process.

The invention discloses a seed tape preparation device for directional seeding corns. The seed tape preparation device for directional seeding corns comprises a working rack, a paper tape unwinding mechanism, a gluing mechanism, a directional zero-speed seed feeding mechanism, an upper and lower paper tape bonding mechanism, a winding mechanism and a control system; the working rack is formed by splicing a plurality of aluminum profiles; The paper tape unwinding mechanism comprises a lower paper tape, two material blocking disks, two optical shafts I and an upper paper tape; the upper paper tape is concentrically arranged on one optical shaft I through the material blocking disk, one optical shaft I is arranged on an upper left side of the working rack, the lower paper tape is concentrically arranged on the other optical shaft I through the material blocking disk, and the other optical shaft I is arranged on a lower right side of the working rack; and the gluing mechanism is arranged on an upper right side of the working rack, the directional zero-speed seed feeding mechanism is arranged on an upper middle part of the working rack, the upper and lower paper tape bonding mechanism is arranged on a middle part of a left side of the working rack, the winding mechanism is arranged on a lower part of the left side of the working rack and located below the upper and lower paper tape bonding mechanism, and the control system is arranged on an upper middle part of the working rack.

The invention discloses a tension control method. Specific number values of warp tension are accurately acquired according to a heald frame, beating-up, dropper shake and weaving machine vibration in the running process of a weaving machine, calculated by means of a data processing algorithm to obtain a real warp tension value, a detection value in the running process of the weaving machine is not influenced by measurement errors caused by rear beam movement and heald frame opening and closing through a tension control device, constant tension is achieved, and even and consistent upper weft threads of a fabric are kept.

The invention discloses a system and method for intelligently controlling tube continuous annealing furnaces, belonging to the technical field of intelligent control. The system disclosed by the invention is formed through carrying out a technical improvement on an existing annealing device, and respectively carries out intelligent control on an auxiliary push roller drive motor, a guide roller drive motor, a take-up reel drive motor and a winding displacement control module; a temperature sensor is respectively added on an annealing furnace and a drying furnace so as to intelligently control the annealing and drying temperatures; and the control processes are all implemented by parameter input, a display module or a computer, thereby achieving the purpose of remote monitoring and control. According to the invention, a situation that wires run in zero tension in the annealing furnace can be ensured, thereby avoiding that the wires are stretched after being softened by heating; the wires subjected to annealing can achieve an effect of constant-tension take-up, and the temperature control precision of the drying furnace and the annealing furnace is high, therefore, a situation that the wires running in the furnaces are always in an optimal recrystallization state is ensured, and the energy-saving effect is good; and the system and method disclosed by the invention are high in degree of automation, and realize remote monitoring and intelligent control.

The invention relates to the field of textile machinery, in particular to a constant-force fast adjusting device of a weft feeder, which includes a casing, an inner tube fixed inside the casing and fixed to a fixed brush frame, and a screw; There is a wrench head assembly, and the inner end extends into the inner tube; there is a rib on the inner wall of the inner tube that divides the inner tube into an outer chamber and an inner chamber; A nut pressing block is matched with the inner wall of the outer chamber without rotation, and the tension spring sleeved on the screw rod is supported between the outer end faces of the ribs of the first nut pressing block; The nut pressing block is matched with the inner wall of the inner chamber without rotation, and the return spring sleeved on the screw rod is supported on the second nut pressing block and the inner end surface of the housing. The invention realizes stable and constant tension adjustment, and at the same time is simpler, convenient to process and low in cost.

The invention discloses a servo device of a trenching machine pipe coiling system. The device comprises a speed reducer, a constant tension control mechanism and a driving mechanism, wherein the constant tension control mechanism is used for providing constant tension to a hydraulic rubber pipe in a trenching machine; the driving mechanism is used for transmitting the power output by the speed reducer to the constant tension control mechanism; the constant tension control mechanism comprises a plunger type hydraulic oil tank and an energy accumulator connected with the plunger type hydraulic oil tank through a first oil pipe; a second oil pipe is connected with the first oil pipe through a tee joint; the driving mechanism comprises a driving shaft, a gear driving mechanism and a screw rod driving mechanism; the driving shaft is connected with the speed reducer; the gear driving mechanism is connected with the driving shaft; and the screw rod driving mechanism is connected with the gear driving mechanism, used for converting the rotary movement of the gear driving mechanism into the linear movement of a plunger rod in the plunger type hydraulic oil tank and is connected with the plunger rod in the plunger type hydraulic oil tank. The servo device is compact in structure, reasonable in design, convenient to mount and use, complete in function, good in servo performance, good in constant tension control effect, stable and reliable in performance and high in popularization and application value.

The invention discloses an electrode wire tightness adjustment mechanism for an electrical spark linear incising machine tool. The electrode wire tightness adjustment mechanism for the electrical spark linear incising machine tool comprises mechanism fixing seat, a motor, a steel rope, a pulley, a pulley support, a first base, a first sliding block, a distance measuring sensor, a constant force spring, a spring support, a second base, a second sliding block, a tensioning guide wheel and a guide rail. The constant force spring is connected with the tensioning guide wheel through the second base; the free end of the constant force spring is connected with the steel rope through the first base; the distance measuring sensor is arranged on the first base and is used for measuring the distance from the constant force spring to the first base; the first base is arranged on the first sliding block; and the other end of the steel rope bypasses the pulley and is connected with the motor. Through the effective combination of the motor and the constant force spring, the constant force spring is used for microscopically regulating and controlling a tensioning force of an electrode wire, and the motor is used for macroscopically regulating and controlling the tensioning force, the characteristics of tensile force constancy and reaction rapidness of the constant force spring are reasonably utilized, and meanwhile, through the macroscopical regulation and control of the motor, the elongation of the constant force spring is changed within a certain range, so that the problem of system oscillation is well solved.

The invention discloses a pressure and tension combined-control abrasive belt grinding device and a using method thereof. The device comprises a contact wheel assembly, a first air cylinder, a drivingwheel assembly, a tensioning wheel assembly, a second air cylinder, a second idler wheel assembly and an abrasive belt, wherein the contact wheel assembly is connected with the extending end of an air cylinder push rod of the first air cylinder, and the first air cylinder is used for adjusting the contact pressure of the contact wheel assembly; the tensioning wheel assembly is connected with theextending end of an air cylinder push rod of the second air cylinder, and the second air cylinder is used for adjusting the tensioning force of the tensioning wheel assembly; and the abrasive belt sequentially passes through a driving wheel of the driving wheel assembly and a tensioning wheel of the tensioning wheel assembly, the second idler wheel of the second idler wheel assembly and the contact wheel of the contact wheel assembly and is tensioned. According to the pressure and tension combined-control abrasive belt grinding device, the contact wheel assembly and the tensioning wheel assembly are controlled to complete corresponding displacement, and the influence of changes of the normal grinding pressure on the tension is eliminated; and the grinding force of the grinding process is kept constant, so that the vibration in the grinding process is effectively reduced, and the quality of the machined surface and the service life of the abrasive belt are guaranteed.

The invention discloses a skein unwinding device, which comprises a driving mechanism, a tension monitoring mechanism located below the driving mechanism, a controller and a skein scaffolding, the driving mechanism and the tension monitoring mechanism are both connected to the controller, and the driving The mechanism is provided with a skein scaffolding, and the tension monitoring mechanism includes a mounting base, two fixed guide wheels, a moving guide wheel, a sliding rack, a driving gear, a driving shaft, a constant spring spring I, a casing, and three induction There are two fixed guide wheels and a slidably installed sliding rack on the outside of the mounting seat. Compared with the prior art, the phenomenon of broken or loose threads can be greatly reduced, and the structure is simple. Realize constant tension, easy to take yarn, adjustable peripheral diameter and convenient and quick adjustment.

The invention discloses an electrode wire tension adjusting mechanism of a wire electric discharge machine tool, comprising a mechanism fixing seat, a motor, a steel rope, a pulley, a pulley support, a first base, a first slider, a distance measuring sensor, a constant force spring, Spring support, second base, second slide, tensioning guide wheel and guide rail. The constant force spring is connected with the tension guide wheel through the second base, and its free end is connected with the steel rope through the first base. The distance measuring sensor is installed on the first base to measure the distance from the constant force spring to the first base. The first base Installed on the first slide block, the other end of the steel rope goes around the pulley to connect with the motor. The effective combination of the motor and the constant force spring, the constant force spring regulates the tension force of the electrode wire on the "micro level", and the "macro" level of the motor regulates the tension force, and rationally utilizes the characteristics of constant tension and rapid response of the constant force spring At the same time, the "macro" regulation of the motor makes the elongation of the constant force spring change within a certain range, which solves the problem of system oscillation very well.

The invention discloses a paper connecting machine control system and method. The paper connecting machine control system comprises a paper connecting control system and a paper tape tension control system, and the paper connecting control system and the paper tape tension control system both include a PLC and a motion control positioning module connected with the PLC; a first motion control positioning module is connected with a synchronous motion control system or the paper tape tension control system of a paper tape pressing connecting machine through cables, and the synchronous motion control system and the paper tape tension control system of the paper tape pressing connecting machine both include a plurality of servo amplifiers and servo motor units connected with the servo amplifiers; and the paper connecting machine control method includes a paper connecting control method and a tension control method. According to the paper connecting machine control system and method, the paper connecting control system and the paper tape tension control system are separately independent systems, so that the system complexity is lowered and system links are reduced; and servo motors are used for detecting the tension, and the coarse and fine control of the torque is combined, thereby achieving the tension constant in the conveying process of paper tapes of a paper connecting machine.

The invention discloses constant-tension cloth belt guide equipment of a square tooth arranger. The equipment comprises a guide column vertically arranged; and a cloth belt conveying device, a swing rod feeding device and a cloth belt clamping device are fixedly mounted on the guide column in sequence from top to bottom. As the cloth belt conveying device, the swing rod feeding device and the cloth belt clamping device are provided, when cloth belts enter the cloth belt conveying device, are conveyed on the swing rod feeding device, and penetrate through the cloth belt clamping device, the cloth belts are kept under the effect of the same one tension to achieve the constant tension effect, that is, the cloth belts are fed with the same one elastic force from an inlet to an outlet and in the outlet, the constant tension requirement in the production process is achieved, the same tooth gap of a zipper is guaranteed, and the product quality and the product assembly effect are improved.

The invention discloses a yarn carrying spindle for controlling bobbin pay-off tension through magnetic damping for a knitting machine, and belongs to the yarn carrying spindle for controlling the bobbin pay-off tension through the magnetic damping. The yarn carrying spindle comprises a tension pay-off mechanism and a yarn outlet mechanism. The yarn outlet mechanism is fixedly installed at the upper end of one side of the tension pay-off mechanism. The tension pay-off mechanism comprises a base, a magnetic damper, a bearing flange, a mandrel, a sheath, a gasket, a volute spiral spring, a bobbin base, a bobbin, a bobbin pin shaft and a bobbin buckle. The yarn outlet mechanism comprises a vertical rod, a yarn outlet blocking rod, a third wheel shaft, a third wheel, a bearing sleeve, a rotating shaft, a yarn outlet wheel support, a yarn outlet wheel shaft, a yarn outlet wheel and a yarn outlet swing head; one side of the vertical rod is provided with the yarn outlet blocking rod, and thevertical rod is provided with the third wheel; the rotating shaft is installed at the top of the vertical rod and provided with the yarn outlet wheel support; and the yarn outlet wheel and the yarn outlet swing head are installed on the yarn outlet wheel support. The yarn carrying spindle has the advantages that manpower is saved, quality and efficiency are improved, product stability is guaranteed, and the large stroke, constant tension and even knitting pitch of a special knitting machine are achieved.