28results about How to "Appropriate tension" patented technology

The application discloses a bubble film feeding device for bubble bag production and relates to the technical field of bubble bag production. The device comprises a support, a feeding roller installed on the support, a pressing roller, an elastic assembly, a pushing assembly and a transmission assembly. The pressing roller is arranged on the inner side of the upper part of the support, and the elastic assembly is arranged on the inner wall of the upper part of the support and connected with the pressing roller. The pushing assembly is arranged on the side wall of the support. The transmission assembly is connected with the roller shaft end of the feeding roller. When the feeding roller is driven to rotate and feed, the transmission assembly is driven to rotate by the roller shaft end of the feeding roller and drives the pushing assembly to move horizontally. The elastic assembly is fixed with an inclined plate, and the pushing assembly is matched with the inclined plate on the elastic assembly through abutting, so that the elastic assembly is compressed, the pressing roller descends synchronously with the rotation and feeding of the feeding roller, the appropriate pressing force on the bubble film is maintained, the bubble film always maintains the appropriate tension during the feeding process, and the loosening and wrinkling condition during feeding is effectively avoided.

The utility model relates to polishing device technical field, and disclose a kind of polishing device for numerical control lathe shell surface processing, including platen one and platen two, platen one and platen two between being provided with rotating rod, the lower end between platen one and platen two is symmetrically installed with U-shaped frame, the inside of the front and rear ends of U-shaped frame is slidably installed with square bearing, the inside between square bearing is fixedly installed with driving wheel, sand belt is installed between driving wheel, the upper side of square bearing is uniformly provided with baffle on U-shaped frame, adjusting screw is penetrated and is screw-connected in the middle of baffle, the front and rear ends of platen one and platen two are fixedly installed with fixed plate in close to corner place, roller is rotatably installed on fixed plate in close to lower side place. The device can increase polishing area, reduce operating labor intensity, and the edge chamfering of numerical control lathe shell can be stably and uniformly polished.

The application relates to a kind of knitting loom, including knitting machine main mechanism, the knitting machine main mechanism includes base, support column, intermediate large dish, middle top rod, top large dish, top support, wire feeding disc support, rotary cylinder, needle hooking groove, self-positioning sinker, hook type closed needle, lower cloth rotary frame;The support column is provided with multiple groups, is evenly fixed on the base, the intermediate large dish is fixed on the support column, the middle top rod is provided with multiple groups, is evenly fixed on the intermediate large dish, the top large dish is fixed on the middle top rod, the top support is fixed on the top large dish, the application can effectively reduce the problem that fabric appears edge mark due to the running roundness of knitting needle is out of tolerance, improve the problem that the difficulty of repair is caused by quick positioning reset in the process of disassembly and maintenance;Reduce the phenomenon that frequent downtime is caused by yarn winding or breakage, improve production efficiency.

The utility model relates to a kind of shoemaking cloth unwinding device, belong to shoemaking cloth unwinding technical field, including the support and fiberboard of equipment rear side installation, fiberboard quantity is two and is fixedly installed respectively in the both ends of support, two fiberboards other side are all provided with slot, two slots are inserted with the placement component for placing hair hook belt material, one fiberboard side is fixed with fixed frame, and tension adjusting assembly is fixedly installed in fixed frame inside, the utility model places component, can be very conveniently installed or disassembled from the support to hair hook belt material reel, and form physical constraint to hair hook belt material reel, without staff repeatedly pulling arrangement hair hook belt material, reduce the labor intensity of staff, simultaneously using tension adjusting assembly, can continuously and steadily exert proper tension to hair hook belt material, improve unwinding quality and subsequent processing stability.

The utility model discloses a transportation mechanism, which relates to the technical field of transportation and comprises a base. The driving assembly is arranged on the base and comprises a driving motor and a transmission wheel, and the driving motor is in driving connection with the transmission wheel; the multiple belts are arranged at intervals in the first direction, a driving wheel and a driven wheel are arranged at the two ends of each belt in a winding mode correspondingly, and the belts are used for bearing workpieces and driving the workpieces to be conveyed in the second direction; the power rod is coaxially connected with the transmission wheel and synchronously rotates with the transmission wheel, and the power rod penetrates through the driving wheel on each belt so as to drive the driving wheel to synchronously rotate along with the transmission wheel; and the tensioning assemblies are arranged on the base, each belt is correspondingly provided with one tensioning assembly, and the tensioning assemblies are in driving connection with the driven wheels to adjust the distance between the driven wheels and the driving wheel. According to the technical scheme, the dismounting process is simplified, and the production efficiency is improved.

This invention discloses a flexible adhesive application mechanism, including a worktable, a connecting seat, a lifting and pressing assembly, a support assembly, a material tray assembly, and an adhesive application assembly. A rotating device is detachably mounted on the upper side of the worktable. A fixing carrier for securing the product is detachably mounted on the upper side of the connecting seat. The lifting and pressing assembly is used to press the product. The support assembly includes a support frame, a base plate slidably mounted on the upper side of the support frame, and a fixing frame detachably mounted on the upper side of the base plate. The material tray assembly is used to wind the adhesive application strip. The adhesive application assembly includes a clamping cylinder detachably mounted on the upper side of the base plate and two adhesive application clamping assemblies. The clamping cylinder has two output ends arranged opposite each other, and the two adhesive application clamping assemblies are respectively located at the two output ends. The adhesive application strip is wound around the two adhesive application clamping assemblies. This flexible adhesive application mechanism automatically cleans residual adhesive after the earphone is glued and assembled, ensuring that the earphone's appearance meets the requirement of being free of residual adhesive.

The utility model relates to a kind of composite board with wiring slot, belong to composite board technical field, including composite board, the wiring slot of three in number and top plate, the top of composite board is equipped with limit binding structure.The composite board with wiring slot, top plate is installed above wiring slot by the action of threaded rod, limit slide bar, limit seat and limit insert plate, the cable inside three wiring slots is bound by three extension springs, three connecting frames and three cable binding plates respectively, improve the flexibility of cable management, each wiring slot has independent binding mechanism, so that when the specific cable needs to be maintained or replaced, the cable in other wiring slot is not affected, so that the neatness and order of entire wiring structure are maintained, and extension spring ensures that cable can maintain appropriate tension when being subjected to thermal expansion and cold shrink, prevent cable from falling off due to excessive relaxation or being damaged due to excessive tightness.

The utility model relates to the technical field of joist fixing equipment, and discloses a joist steel joist fixing device. The technical problems that in the prior art, due to the fact that bolt positions are not evenly arranged, contact points of I-shaped steel and a vertical beam are different in stress and prone to damage, and safety accidents are caused are solved. The device comprises at least two pieces of I-shaped steel which are arranged in parallel, the I-shaped steel is mounted on the vertical rod; a bottom beam limiting block is mounted at the top of the I-shaped steel and is used for placing a bottom beam; adjusting type notches are correspondingly formed in the I-shaped steel, and bolts are installed in the adjusting type notches and used for adjusting the positions of the bolts to fix the I-shaped steel; the vertical rod is provided with threads so that the tray can be screwed and installed to support the I-shaped steel. The adjustable notch is designed, the bolt is allowed to move within a certain range, flexible adjustment is achieved according to the stress condition, and the structural stability is ensured.

The utility model relates to the technical field of curing equipment, in particular to a track assembly and a curing oven with the track assembly, and the track assembly comprises at least two sets of track bodies arranged in parallel and turning wheels installed at the outer ends of one sides of the track bodies. The turning wheel is installed on the tensioning structure and is driven by tensioning to achieve displacement adjustment in the direction parallel to the length direction of the track body. The tensioning structure comprises a fixed sliding rail, a sliding block and a traction structure. The sliding block is matched with the fixed sliding rail and is used for fixedly mounting the turning wheel; the traction structure comprises a transition wheel, a counterweight and a traction piece; the traction piece is wound on the transition wheel, and the two ends of the traction piece are connected with the sliding block and the balance weight respectively. The turning wheel is installed on the tensioning structure, real-time dynamic adjustment of the turning wheel is achieved, the materials distributed along the track assembly always keep proper tension based on reasonable counterweight selection, the situation that the curing effect of a chip is affected due to the fact that a material belt is too loose or too tight is avoided, and the curing quality is improved.

The utility model discloses a cable traction device belongs to cable take -up field, including the casing, the casing single -sided opening, the opening installs the traction motor, installs the traction wheel on the traction motor, the traction wheel below is provided with the compression wheel, the casing is far from the cable storage module of opening one side and is provided with, the cable storage module and the traction wheel between be provided with the tension pulley, be provided with the tension detection module between the tension pulley and the traction wheel, the tension pulley passes through the shift adjusting mechanism and is installed to the casing. Make the cable in the traction process can keep suitable tension, avoid because the tension is too big and leads to the cable excessive tensile damage, or the tension is too small and causes the cable relaxation, and the traction is not smooth etc. problem, effectively improved the quality and efficiency of cable traction, guaranteed the stability and reliability of the traction process.

The utility model discloses a carrying mechanism, and relates to the technical field of welding, the carrying mechanism comprises a bearing assembly, the bearing assembly comprises supporting seats and a plurality of bearing ropes, the plurality of bearing ropes are arranged in parallel and at intervals, the two ends of each bearing rope are respectively connected with one supporting seat, and the bearing ropes are used for bearing materials; the tensioning assembly is arranged on the supporting seat, and the tensioning assembly is connected with the bearing rope so as to be used for tensioning the bearing rope; and the first driving assembly is in driving connection with the bearing assembly so as to drive the bearing assembly to move in the length direction of the bearing rope. According to the technical scheme provided by the utility model, the tensioning force of the bearing rope is adjusted in real time, so that the bearing rope can keep proper tensioning degree at any time, materials are always kept stable in the transportation process, shaking and instability caused by drooping are avoided, and the safety and reliability in the transportation process are improved.

The utility model relates to the technical field of cable take-up and pay-off, in particular to a cable take-up and pay-off device capable of automatically adjusting tension, which comprises a fixing frame, a plurality of universal wheels are mounted at the bottom of the fixing frame, symmetrically distributed pull rods are fixedly connected to the top of the fixing frame, and symmetrically distributed guide groove plates are fixedly connected to the top of the fixing frame. The guide groove plates jointly support a discharging rod. Through the arrangement of the electric sliding rail, the tension sensor, the fixing shaft, the tensioning wheel, the fixing block and the full-automatic tension control box, the tension of the cable can be monitored and accurately controlled in real time, it is ensured that proper tension can be kept under any working condition, frequent manual intervention is not needed, the cable laying and recycling speed is greatly increased, and the working efficiency is improved. The operation time is reduced, and the cable damage caused by excessive stretching or loosening can be effectively avoided, so that the quality of the cable is ensured, and the service life of the cable is prolonged.

The utility model discloses a kind of floating bed for water eutrophication repair, it is related to the technical field of repair floating bed, including device main body, the lower end of device main body is provided with isolation mechanism, including waterproof cover cloth, the lower end of device main body is fixedly connected with fixed frame, the inside of fixed frame is provided with U type moving block, when plant on device main body appears corruption, start motor, motor will drive screw rod rotation, U type moving block will move along the trajectory of two limit slide rods, and U type moving block will drive waterproof cover cloth to move, waterproof cover cloth moves and will constantly cover the lower end of device main body, until U type moving block moves to the right end of fixed frame inner wall, at this time, waterproof cover cloth will completely cover the lower end of device main body, avoid plant growth to mature period not timely harvesting, residual body will gradually wither, fall off and sink into water body, form the problem of "secondary pollution", so that the effect of repair is not affected.

The present disclosure provides a device and a system for flying a flag of an extraterrestrial object, the device comprising: a flagpole; a winder arranged at one end of the flagpole; a rope wound on the winder and extending along the flagpole from the winder to the other end of the flagpole, the rope continuing to extend along the flagpole back to the winder after passing around the other end of the flagpole, a flag being fixed to the rope; a driver for rotating the winder to move the rope along its extension direction relative to the flagpole; a tensioning mechanism for tensioning the rope.

The utility model belongs to the technical field of knitted fabric production, and particularly relates to a thread feeding device for knitted fabric production, which comprises a thread feeding frame for knitted fabric production, two rotating shafts are rotatably connected to the inner walls of the front side and the rear side of the thread feeding frame, and a variable-speed thread feeding mechanism is arranged between the thread feeding frame and the two rotating shafts. Three wire guide plates are fixedly connected to the inner walls of the front side and the rear side of the wire feeding frame, and a movable plate is arranged in the wire feeding frame in a sliding mode. The yarn feeding device is reasonable in structural design, the tension degree during yarn feeding can be effectively regulated and controlled, the tension degree of yarn is made to be appropriate, the situation that products woven by knitted fabric are affected due to the fact that the yarn is too loose and the yarn is prone to being snapped due to the fact that the yarn is too tight is avoided, meanwhile, the yarn feeding speed can be regulated and controlled according to the requirement for knitting the knitted fabric, and the using effect of the device is improved; and due to the arrangement of the yarn feeding groove and the rubber ring, a plurality of yarns can be synchronously, stably and smoothly fed, and the situation that the fed yarns slip is avoided.

This utility model discloses an anti-deviation conveyor belt assembly for reflow soldering equipment, including a reflow soldering machine. The reflow soldering machine has an adjustable conveyor belt inside and an anti-deviation mechanism. The anti-deviation mechanism includes mounting seats, mounting holes, fixed seats, limit frames, assembly holes, support frames, and positioning rollers. The bottom wall of the reflow soldering machine has evenly distributed mounting seats on both the front and rear sides, each with mounting holes on its upper surface. The reflow soldering machine also has evenly distributed fixed seats on both the front and rear sides inside, each with a limit frame on its upper surface. The limit frames have evenly distributed assembly holes on their outer surfaces. A support frame is located between two adjacent limit frames. This utility model uses the anti-deviation mechanism to maintain appropriate tension on the conveyor belt during operation, ensuring the conveyor belt maintains linear motion and preventing the conveyor belt and accessories from being scrapped due to deviation.

Problem: To provide a training bicycle capable of pedal unit attachment / detachment that is adapted to enable adjustment of chain slack by a simple method. Solution: A bicycle detachable pedal unit configured to enable attachable / detachable connection of a pedal crank to a bicycle body, comprising a unit body having a unit connector for rotatably retaining and fastening to a bicycle body a pedal crank axially supporting a chain wheel, a unit receiving member fixedly installed on the bicycle body for interconnecting with the unit connector, and a sliding adjustment mechanism provided on the unit receiving member and unit connector for varying and fixing mutual fore-aft connection position of the unit receiving member and unit connector in order to adjust fore-aft connection position of the bicycle detachable pedal unit relative to the bicycle body and thereby adjust chain tension.

The utility model relates to the technical field of high polymer material crosslinking process, and provides an ultraviolet irradiation crosslinking device for a cable insulation layer, which comprises a plastic extruding machine head used for wrapping an insulation material outside a conductor to form an insulation wire core; the ultraviolet light irradiation cross-linking machine is positioned on one side of the machine head of the plastic extruding machine and is used for performing ultraviolet light irradiation on the insulated wire core; the traction unit is provided with a first guide wheel and a second guide wheel, the first guide wheel movably abuts against the conductor, and the second guide wheel movably abuts against the insulated wire core; the heating unit is positioned between the first guide wheel and the extruding machine head and is used for heating the conductor; the cooling unit is positioned on the side of the ultraviolet light irradiation cross-linking machine and is used for cooling the insulated wire core; the first guide wheel and the second guide wheel jointly ensure that the conductor and the insulated wire core keep proper tension in the whole production process, and ensure that the conductor and the insulated wire core are positioned at correct working positions in the machine head of the plastic extruding machine and the ultraviolet irradiation cross-linking machine.

The invention relates to the technical field of cable wrapping and compacting, and discloses a flame-retardant fireproof environment-friendly cable automatic wrapping and compacting device which is characterized in that a supporting assembly is sequentially provided with a guider, a winder, a compactor, an extrusion roller set and a winding roller from left to right, and a supercharger corresponding to the winding roller is fixed to the inner side of the winder; a limiter for limiting a wrapping tape is fixed on the inner side of the winding device, a pressing device attached to the wrapping tape is fixed at the left end of the compactor, the guider guides a cable body to move, it is ensured that the cable does not deviate in the wrapping process, the phenomenon of uneven wrapping is avoided, a supercharger arranged in the winding device applies tension to the wrapping tape through an extrusion roller, and the wrapping tape can be tightly wrapped. The wrapping tape is ensured not to loosen, the stable wrapping quality is maintained, the compactor works synchronously, and the two groups of compaction rollers are used for compacting the cable body, so that the tight attachment between the wrapping tape and the cable is further enhanced, and the cable wrapping quality is improved.

This utility model relates to the field of conveyor technology and discloses a tensioning roller for a belt conveyor, including symmetrically arranged mounting plates. A reduction motor is fixed to the side wall of each mounting plate, and the output end of the reduction motor passes through the mounting plate. A mounting plate is provided at the output end of the reduction motor, and a torque sensor is fixed between the mounting plate and the output end of the reduction motor. Two rollers are movably mounted between the mounting plates, and guide plates are symmetrically and movably mounted on the surface of each roller. An adjusting rod is threaded onto the surface of the mounting plate, and a guide rod is movably mounted through the surface of the mounting plate. Both the guide rod and the adjusting rod are movably mounted to the guide plate on the same side. This utility model achieves belt tensioning, allows real-time monitoring of the belt tension for timely adjustment, and also enables precise belt positioning.

A winding device for textile fabric processing comprises a workbench, a winding mechanism and a tension adjusting mechanism, the winding mechanism is installed at the upper end of the workbench and comprises two sets of supporting frames, a guide rod is fixedly connected between the two sets of supporting frames, the outer side of the guide rod is slidably connected with two sets of moving plates, and the two sets of moving plates are fixedly connected with the workbench. A transmission shaft is rotationally connected to the inner side of the movable plate, a clamping plate is fixedly connected to one end of the transmission shaft, and the tension adjusting mechanism is installed on the outer sides of the two supporting frames. By arranging the feeding and discharging mechanism, the V-shaped frame can move upwards to convey the winding shaft to the position between the two sets of clamping plates, feeding is completed, after winding is completed, the rotating shaft can drive the V-shaped frame to rotate, the winding roller automatically falls onto the discharging guide rail at the upper end of the workbench after winding is completed, and therefore automatic discharging operation is conducted; automatic feeding and discharging of the wind-up roller are achieved, manual operation is greatly reduced, and working efficiency is improved.

The utility model discloses a kind of quick winding device for motor manufacturing, it is related to motor manufacturing technical field, including device seat, the lower side of device seat is fixedly installed with sliding plate, the movable seat of left and right sliding is sleeved on sliding plate, the inside of movable seat is rotatably connected with the one side of device seat with rotating seat, the upper side of device seat is fixedly installed with slide, the upper side of slide is provided with the movable seat of left and right sliding, rotating plate is rotatably connected with one side of movable seat, and torsion spring is arranged at the rotary joint of rotating plate.The utility model is accurate fixed mechanism and automatic adjustment mechanism, ensure the stability and accuracy of iron core in winding process, utilize the screw thread connection of rotating seat and clamping block to realize the uniform clamping of iron core, prevent loosening or displacement, adjustable clamping system and stud can handle different size iron core, keep the proper tension and stable wire of wire rod, avoid slack or knot, in combination with the cooperation of rotating seat rotation and motor control device, ensure the efficiency and high accuracy of winding process.

The utility model discloses a transmission device of a crawler chassis hammer crusher, which relates to the technical field of road construction and maintenance, and is characterized in that a crushing transmission assembly is arranged between an engine and a crushing box, and the crushing transmission assembly comprises a plate belt coupler, a U-shaped mounting seat, a driving belt wheel, a driven belt wheel and a transmission belt. According to the device, vibration generated by starting, stopping and crushing impact of an engine is absorbed through the elastic plate belt, rigid impact of a transmission system is reduced, and the service life of the engine, the service life of a bearing and the service life of a belt are prolonged; large stress generated by vibration, impact and the like can be effectively buffered and absorbed; a closed-loop control system of the hydraulic oil cylinder and the pressure sensor monitors the tension of the belt in real time, automatically adjusts the expansion amount of the oil cylinder and automatically compensates tension attenuation caused by belt abrasion or temperature change, so that the belt is always kept at a proper tension degree, and the transmission efficiency is ensured to be stable.

The utility model discloses a bonding copper wire pay-off device, and relates to the technical field of pay-off equipment. The device comprises a mounting plate, a fixing mechanism, a tensioning mechanism and a limiting mechanism, the fixing mechanism comprises a clamping block, flexible fixation of bobbins with different diameters is achieved by arranging the fixing mechanism and the limiting mechanism, a movable ring is driven to move by rotating a first hand wheel and a lead screw, then a supporting plate is supported through a connecting rod structure, and therefore the bobbins with different diameters can be fixed. The spool is stably fixed on the device, so that the adaptability of the device is improved, the same device can fix spools with various diameters, the stability of the spools in the pay-off process is ensured, the problems of copper wire winding, breakage and the like caused by shaking or deviation of the spools are effectively avoided, and the pay-off efficiency and quality are improved; the limiting mechanism can ensure that the bobbin is always kept at the correct position in the paying-off process, the tensioning mechanism ensures that the copper wire always keeps proper tension in the paying-off process, and the paying-off quality and efficiency of the copper wire are improved.

The utility model discloses a printing module paper feeding structure, which belongs to the technical field of thermal printers and comprises a thermal printer shell, a paper containing bin, a thermal paper roll, a conveying rubber roller, a mounting side plate, a heat dissipation roller, a heat dissipation convex plate and a through hole. Heat generated when the heat dissipation roller rubs with the thermal paper roll can be discharged outwards, the thermal paper roll is prevented from developing due to the fact that the temperature of the heat dissipation roller is too high, and when the temperature in the printer is high, the temperature on the thermal paper roll can be radiated into the heat dissipation roller through the heat dissipation roller and the through holes formed in the surface of the heat dissipation roller, so that the heat dissipation effect is improved. And the heat dissipation effect is better through the heat dissipation protruding plates, the lower pressing roller and the jacking roller can have the same heat dissipation effect through the hollow interior of the lower pressing roller and the jacking roller and the two sides of the lower pressing roller and the two sides of the jacking roller penetrate through the second supporting arms and the first supporting arms, and the heat dissipation effect of the lower pressing roller and the jacking roller is better through the arrangement of the heat dissipation protruding plates.

The utility model provides an automatic tensioner for a goods binding chain of a railway flatcar. Relates to the technical field of cargo transportation. The automatic tensioner for the goods binding chain of the railway flatcar comprises a base, a vertical plate is fixedly mounted at the top of the base, a hydraulic cylinder is fixedly mounted on one side of the vertical plate, a connecting block is fixedly mounted on an output rod of the hydraulic cylinder, and a first mounting block is fixedly mounted on one side of the connecting block; a tensioning wheel is rotatably mounted on the first mounting block, a fixing block is fixedly mounted at the top of the first mounting block, a same connecting rod is fixedly mounted between the inner walls of the two sides of the fixing block, a transverse plate is rotatably mounted on the connecting rod, a movable hole is formed in the transverse plate, and two rectangular blocks are fixedly mounted at the top of the transverse plate. The chain tensioning device has the advantages that the possibility of tooth disengagement between the chain and the tensioning wheel can be reduced, the chain can be better restrained, and the chain tensioning device is convenient to adjust during use.

This utility model discloses a differential speed tightening device for steel wire, including a base. A front-end tightening device is fixed to the left end of the top surface of the base, and a rear-end tightening device is fixed to the right end of the top surface of the base. In this utility model, a front-end tightening device and a rear-end tightening device are respectively set at both ends of the base. When the first motor and the second motor are started, the first motor and the second motor drive the corresponding upper guide roller to rotate. With the auxiliary rotation of the lower guide roller, the steel wire located in the groove on the surface of the combined guide wheel obtains different speeds at the front-end tightening device and the rear-end tightening device. The speed of the first motor is set to be greater than that of the second motor by the motor controller, so that the linear speed of the steel wire before and after a certain production process is different, generating tension. Since the speed of the front end is faster and the speed of the rear end is slower, this speed difference will cause the steel wire to be tightened, achieving the tightening effect and ensuring that the produced steel wire has good performance.