84results about How to "Reduce pulling force" patented technology

The present invention relates to the field of magnetic detection technology, and discloses a nanocrystalline strip magnetic testing device, including a nanocrystalline strip detection box, wherein both sides of the inner wall of the nanocrystalline strip detection box are fixedly connected with brackets, the outer walls of the two brackets are rotatably connected with rotating bodies through a second rotating shaft, and the outer walls of the two rotating bodies are rotatably installed with limit members, wherein the limit members are composed of two clamping rollers that can be adjusted to be close or far away, and further include a bending assembly, wherein the bending assembly can bend the nanocrystalline strip located between the two groups of rotating bodies, and the bending has two states, one of which is static bending and the other is dynamic bending. The present invention cooperates with the friction wheel, the friction plate and the clamping roller, so that the clamping roller actively rotates to send the nanocrystalline strip to the middle, thereby reducing the pulling force on the nanocrystalline strip as much as possible, thereby reducing the influence of the pulling force on the magnetic performance result, and making the final test result more accurate.

The invention discloses a bearing ring polishing device for bearing production and machining, and relates to the technical field of bearing production and machining. A machine cabinet assembly is arranged at the bottom of the top base, a grinding table is arranged in the center of the top of the top base, supporting columns are arranged at the corners of the top of the top base, a circular plate is arranged at the tops of the supporting columns, a motor is arranged at the top of the circular plate, and an electric telescopic rod is arranged at the bottom of the circular plate. Bearing rings of different specifications and diameters are clamped in a self-adaptive mode through the L-shaped arc top plate, meanwhile, the friction force is gradually increased due to the fact that the guide arc plate and the rubber soft block continuously go deep downwards along with the bearing rings, and the stability of the bearing rings on the top of the grinding table is effectively improved; and the situation that the bearing ring shakes due to high-speed rotation of the grinding disc during grinding, the preset grinding direction of the bearing ring deviates, and the phenomenon that the grinding thickness of the bearing ring is not uniform is avoided.

The invention relates to the technical field of mold ejection, and discloses a using method of a mold stripping ejection structure for a plastic forming mold, the mold stripping ejection structure comprises a fixed base, the two sides of the top of the fixed base are fixedly connected with fixed baffles correspondingly, the tops of the fixed baffles are fixedly connected with a first connecting frame, and the top of the first connecting frame is movably connected with a second connecting frame; the top of the second connecting frame is movably connected with a third connecting frame, when a mold is manufactured, an inverted buckle structure opposite to the mold opening direction is avoided as much as possible, and if the inverted buckle structure cannot be avoided, other design modes such as changing an inverted buckle into a slope structure can be considered, so that demolding can be smoothly performed during mold opening, and a simple product shape is designed; according to the invention, complex curved surfaces and corners are reduced, so that the mold manufacturing difficulty can be reduced, zero-degree mold stripping can be realized, a proper parting surface position can be selected, products can be smoothly separated during mold opening, the parting surface is selected at the maximum outline of the products as much as possible, and complex parting surface shapes are avoided.

The invention relates to the technical field of asphalt concrete production, and discloses an asphalt concrete production technology and equipment which comprises a shell, two telescopic supporting legs are fixedly connected to the two sides of the shell correspondingly, fixing plates are fixedly connected to the telescopic supporting legs correspondingly, springs are fixedly connected to the tops of the fixing plates, and mounting plates are fixedly connected to the tops of the springs; a mounting frame is fixedly connected between the mounting plates, a screen is fixedly connected into the mounting frame, corrugated holes are formed in the two sides of the screen, a mounting rod is slidably connected between the corrugated holes in the two sides of the mounting frame, a limiting rod is slidably connected to the bottom of the mounting rod, and a plurality of evenly-distributed separation rods are fixedly connected to the bottom of the limiting rod. According to the asphalt concrete production equipment, the mounting rods are matched with the corrugated holes, and the staggered wave-shaped guide surfaces of the two guide plates are utilized, so that the auxiliary performance of the equipment during screening work after asphalt concrete is crushed is effectively improved.

The utility model relates to the technical field of tractor accessories, in particular to a tractor traction device which comprises a traction rod and a traction block, a traction groove with a forward opening is formed in the rear side face of the traction block, a buffering device is installed in the traction groove, and a one-way limiting device is arranged at the opening of the traction groove. The traction rod is detachably clamped in the traction groove through a one-way limiting device, and the traction rod is connected with the one-way limiting device through a fixing device. According to the tractor traction device, after the traction block and the traction rod are connected with the tractor head and the tractor hopper of the tractor respectively, clamping can be directly completed during connection and installation, manual installation after adjustment by personnel is not needed, and connection is more convenient. And through the arrangement of the buffering device, the impact or pulling force borne by the device is relieved, damage to the device is reduced, and the service life of the device is prolonged.

The invention discloses an acquisition assembly, a battery pack and a vehicle, and the acquisition assembly comprises a flexible circuit board, a component and a first skeleton. The component is connected to the flexible circuit board; the first framework is provided with a first containing groove, the flexible circuit board is connected to the first framework, and the component is located in the first containing groove, so that when adhesive glue enters the first containing groove to wrap the component, the adhesive glue wrapping the component is located in the first containing groove; the bonding glue wrapping the component is clamped in the first framework and forms a whole with the first framework, so that the internal component and the first framework form a whole. Therefore, in the process that the battery pack is pressed, the pulling force applied to the component by the adhesive is dispersed to the first framework and converted into the pulling force between the first framework and the flexible circuit board, so that the force between the component and the flexible circuit board is reduced, the risk that the component is separated from the flexible circuit board is reduced, and the service life of the battery pack can be prolonged.

The invention discloses a spraying dust removal device and method for a miniature sweeper, and relates to the technical field of spraying dust removal, the spraying dust removal device comprises a sweeper body top plate and further comprises an adjusting device, a water storage tank is fixedly mounted at the top of the sweeper body top plate, water pumping equipment is fixedly mounted on the right side of the water storage tank, and a containing groove is formed in the top of the water storage tank; a placement groove is formed in the water storage tank, a rotating frame is rotatably mounted on the inner wall of the placement groove, an adjusting hole is formed in the surface of the rotating frame, a dust removal nozzle is arranged on the inner wall of the rotating frame, a water pipe is arranged between the water pumping equipment and the water storage tank, and the adjusting device comprises a placement frame, an adjusting rod, an adjusting plate, a protection groove, a T-shaped rod and a linkage rod. The rotating frame is manually rotated to rotate, the rotating frame rotates to drive the dust removal nozzle to rotate for angle adjustment, the angle change of the dust removal nozzle caused by manual mistaken touch can be effectively prevented through the T-shaped rod, and therefore it is ensured that the dust removal nozzle always faces a target area.

The invention discloses two-way stretching equipment for polypropylene film processing, and belongs to the field of polypropylene film processing.The two-way stretching equipment comprises an operation box and a workbench slidably connected to the interior of the operation box, a locking component is arranged on the outer side of the workbench, and the locking component comprises two first connecting plates arranged on the outer side of a lead screw nut in a sleeving mode; the two first connecting plates are slidably connected to the outer sides of the two guide rods correspondingly, pre-laying supports are hinged to the upper sides of the two first connecting plates correspondingly, the edge of a thin film can be bent by 90 degrees after the rotating base rotates, and finally the thin film is locked; the edge of the thin film is bent by 90 degrees above the positioning seat through rotation of the rotating seat before the thin film is stretched, and the thin film is locked through the rotating seat and the positioning seat, so that the pressure intensity and the pulling force borne by the clamped position of the thin film in the stretching process are reduced, and the clamping position of the thin film is prevented from being damaged.

The utility model provides a manufacturing device of an oral dissolving film. Comprising a machine body, a power assisting roller, a pressure roller, a discharging groove, a discharging roller and a receiving roller are rotationally installed on the machine body, one end of the power assisting roller extends into the machine body and is fixedly provided with a first gear, and the other end of the power assisting roller extends into the machine body and is fixedly provided with a second gear; a first gear is fixedly installed on the machine body, a second gear is meshed with the first gear, a third gear is fixedly installed on the second gear, a fourth gear is meshed with the third gear, a fifth gear is meshed with the fourth gear, a rotating disc is fixedly installed on the fifth gear, and fixing strips are symmetrically and fixedly installed on the machine body. And the same storage hopper is fixedly mounted on the two fixing strips, and a rotating plate is rotationally mounted at the bottom end of the storage hopper. The manufacturing device for the oral dissolution film has the advantages of improving quality and saving manpower.

The utility model belongs to the technical field of towed chain cable, concretely is a kind of towed chain cable for industrial robot, including guide core and cladding layer;The outer side of guide core is spirally wound with torsion resistance layer, the torsion resistance layer is double-layer structure, and inside has torsional deformation activity space;The outside of torsion resistance layer is longitudinally covered with buffer layer, the outside of buffer layer is protruding with the support part of axial interval, and the bending deformation activity space is formed between adjacent support part;The outer layer of buffer layer is equipped with shielding layer, and it is double-layer structure, to mutually make up the gap generated when twisting and bending deformation. The torsion resistance layer includes the inner belt body of inner layer and the outer belt body of outer layer, and the mutual approaching surface of inner belt body and outer belt body is equipped with protruding part. By setting the protection assembly of inside and outside double layers and can be mutually staggered in guide core outer, it is combined that shielding layer is layered complementary, and the activity space between protection assembly and shielding layer, to realize the effect that cable guarantees structural integrity under the effect of frequent bending and torsional deformation.

The utility model discloses an unloading block assembly of a cast-in-place box girder construction device, which comprises a plurality of unloading blocks and a pulling mechanism for driving the unloading blocks to lift and adjust, each unloading block comprises a lower base, an upper base, a sliding sleeve, a hollow support body, a fixed pulley block, a movable pulley block and a steel wire rope, the hollow supporting body is sleeved with a sliding sleeve which is in sliding fit with the hollow supporting body, an upper base is arranged at the upper end of the sliding sleeve, a fixed pulley block is arranged in the upper end of the hollow supporting body, a movable pulley block is arranged at the lower end of the sliding sleeve, a steel wire rope is wound around the fixed pulley block and the movable pulley block, and one end of the steel wire rope is fixedly connected with a wheel carrier of the fixed pulley block; compared with the prior art, the device has the advantages that the device is convenient to use, the working efficiency is improved, and labor is saved during adjustment.

The utility model discloses a cathode current collector plate and a cylindrical battery comprising the cathode current collector plate, the cathode current collector plate comprises: a body, the outer contour of which forms a circle; the welding lug boss protrudes from the main body to one side of the negative collector plate; the welding lug boss is arranged on one side of the negative electrode bus plate, the buffer lug bosses protrude from the body to the side of the negative electrode bus plate, the welding lug boss is arranged in the center of the negative electrode bus plate, and the buffer lug bosses are arranged around the welding lug boss in the circumferential direction at intervals. According to the utility model, the negative electrode confluence plate is beneficial to guaranteeing the welding quality; when the battery falls off or vibrates, the buffering lug boss can play a buffering role; the welding lug boss and the buffer lug boss jointly ensure the overcurrent capacity; and the buffer lug boss is beneficial to welding and positioning.

A storage tank outer wall suspension type sand blasting wall-climbing robot is characterized by comprising a robot body, walking driving mechanisms, walking wheels, a suction cup assembly, a transverse moving mechanism, a moving frame, a sliding rail, an electric telescopic rod, a mounting plate, a spraying gun, a spraying head and a sand conveying pipe positioning assembly, the walking driving mechanisms are arranged at the two ends in the robot body correspondingly, and the walking driving mechanisms are connected with the walking wheels; a suction cup assembly is installed on the bottom face of the machine body, a transverse moving mechanism and a sand conveying pipe positioning assembly are installed on the top face of the machine body, the transverse moving mechanism is connected with a moving frame, the moving frame is slidably connected with a sliding rail installed on the top face of the machine body, and an electric telescopic rod is fixedly installed on the moving frame. According to the automatic spraying machine, the transverse moving mechanism is designed and installed on the machine body, and under the condition that the robot is not moved, the spraying operation range is expanded.

The utility model relates to a bending and winding machine for a mining fireproof and explosion-proof cable, which aims to solve the technical problems that the current included angle between the cable and a winding drum is too small, so that the wound cable is basically transversely wound, and the pulling force to the cable is large, and comprises a winding machine body, an L-shaped plate and a guide structure, the vertical end of the L-shaped plate is fixedly arranged on a driving motor shell of the winding machine body. The guide structure is arranged at the transverse end of the L-shaped plate; the guide structure comprises a track and a guide beam; the track is fixedly arranged at the transverse end of the L-shaped plate; the cable guiding device has the advantages that the cable entering the winding drum is guided, so that the included angle between the cable and the winding drum is enlarged, the advancing distance of the cable is increased, and the pulling force is reduced.

The present invention relates to the field of coil winding technology, and specifically discloses a coil winding feeder device for an oil-immersed transformer, comprising: a first U-shaped frame, two symmetrical U-shaped plates are arranged on the first U-shaped frame, a tensioning wheel is arranged inside the U-shaped plate, and a first driving component and a second adjusting component are arranged on the first U-shaped frame. The coil winding feeder device of the present invention can reduce the pulling force on the coil mold when the cable is wound, and improve the coil winding quality through the cooperation of the U-shaped plate, the tensioning wheel first driving component and the second adjusting component.

The utility model discloses a novel optical transmission device for communication engineering, and relates to the technical field of optical transmission devices, the novel optical transmission device for communication engineering comprises a device body, the inner wall of the device body is fixedly connected with a fixed seat, the surface of the fixed seat is fixedly connected with sliding chutes arranged at equal intervals, and the sliding chutes are fixedly connected with the fixed seat. A spring is fixedly connected to the surface of the winding pile, a crystal head is slidably connected to the interior of each connecting seat, a home-entry wire is fixedly connected to the surface of the crystal head, a connecting wire is arranged on the inner wall of the equipment body, and the end, away from the equipment body, of the connecting wire is fixedly connected with the corresponding connecting seat, so that the home-entry wire and the connecting wire can be buffered; therefore, the connection part of the optical fiber can be prevented from loosening, the damage rate of the home-entry wire and the connection wire is reduced to the maximum extent, the service life of the home-entry wire and the connection wire is prolonged, connection elements in the device can be protected, the failure rate of the optical fiber can be reduced, and the use experience of a user is improved.

The application relates to the field of safety belts, and particularly discloses a full-body safety belt for aerial work, which comprises a shoulder belt, a waist ring, a leg ring and a connecting belt, is provided with a tightening box on one side of the back of a worker, and the shoulder belt and the connecting belt are movably connected in the tightening box; a buffering assembly capable of buffering the falling force of the worker is fixed to the side face of the tightening box away from the back of the worker; and a traction rope is arranged in the buffering assembly. When the worker suddenly falls during aerial work, the decelerating blocks in the two buffering members slide away from the corresponding connecting parts, gradually clamping the first buffering belt and the second buffering belt on the corresponding side, thereby slowing down the falling force of the worker, buffering the pulling force of the safety belt on the worker, avoiding the injury of the worker caused by the excessive pulling force, and in the buffering process, the traction rope is pulled, so that the shoulder belt and the leg ring are tightened on the worker, reducing the possibility of the separation of the safety belt from the worker.

The utility model discloses a pet pulling rope which comprises a pulling rope body, a first handle part and a necklace buckle, the first handle part is connected to one end of the pulling rope body, the pet pulling rope is characterized by further comprising an elastic force unloading piece and a second handle part, one end of the elastic force unloading piece is connected with the other end of the pulling rope body, and the necklace buckle is connected with the elastic force unloading piece. The other end of the elastic force unloading piece is connected with the necklace buckle, the second handle part is connected to the traction rope body, and the distance between the second handle part and the necklace buckle is smaller than the distance between the first handle part and the necklace buckle. According to the pet pulling rope, the elastic force unloading piece is arranged between the pulling rope body and the necklace buckle, the elastic force unloading piece can play a good force unloading and buffering role, the pulling force generated when a user pulls a pet is reduced, and therefore the user and the pet can be well protected; in addition, the second lifting handle part is arranged on the traction rope body, and the first lifting handle part and the second lifting handle part are matched to meet the use requirements of different traction lengths.

The invention relates to a battery, particularly provides a sampling device, a battery management system and a battery pack, and aims to solve the problem that an existing sampling device occupies a large space. In order to achieve the purpose, the sampling device comprises a circuit board and a sampling terminal, and the circuit board is arranged on the outer side edge of a battery pack; the first end of the sampling terminal is electrically connected with the cylindrical cell, and the second end is electrically connected with the circuit board. According to the battery pack, the circuit board arranged on the outer side edge of the side plate does not occupy extra space of the battery pack, and meanwhile, the battery pack can use a space for arranging a sampling device in the prior art for placing a battery cell, so that the energy density of the battery pack is improved. Meanwhile, circuit elements on the outer side edge of the fixing shell are few, the possibility that the circuit board is interfered is low, absorbent cotton and the like are generally arranged in the battery pack, and the possibility that the circuit board is affected with damp is low. And moreover, when the circuit board is arranged on the outer side edge of the side plate, the distance between the circuit board and the battery cell is relatively short, so that a sampling terminal can be conveniently arranged.

The application discloses a winding equipment for stator and rotor production and belongs to the field of winding machines, which comprises a rack, a hydraulic cylinder fixedly connected to one side top of the rack, a rotating mechanism fixedly connected to the other side of the rack, and a protection mechanism arranged at the top of the rotating mechanism. The moving slider is used to move the guide plate up and down, so as to conveniently control the position of the guide plate. According to the height of the rotor, the distance between the two guide plates is adjusted to be the same as the height of the rotor, and the distance between the two guide plates can be adjusted according to the size of the rotor, so that the application range is wider. The rotor is moved to the guide plate, the slotted position of the rotor is between the two guide plates, the copper wire is in contact with the arc surface position of the guide plate when the protection mechanism rotates with the copper wire, the copper wire is guided by the arc surface of the guide plate, and the copper wire slides to the position of the rotor, so that the winding of the rotor is more convenient.

This utility model discloses a structure for easy peeling of release paper, filling the gap in automated production processes for release paper peeling. It facilitates automated peeling of release paper using machinery, improving work efficiency, reducing labor costs, and actively promoting industrial automation. The structure includes a circuit board product and release paper. Double-sided adhesive is applied to the upper surface of the circuit board product, and the release paper adheres to and completely covers the double-sided adhesive. One end of the release paper has a protrusion extending beyond the edge of the circuit board product. A circular hole is provided on the protrusion. A dividing portion is provided on the release paper, including a first cutting line parallel to the long side of the release paper and a second cutting line. The first cutting line is located between the two ends of the release paper. One end of the second cutting line connects to the first cutting line, and the other end connects to one long side of the release paper.

The utility model relates to a gas storage tank for a Hall propulsion system, which aims to solve the technical problem that a currently connected hose is bent downwards due to gravity and is easy to pull a pipeline joint, and comprises a tank body and a pipe supporting structure, the supporting pipe structure is arranged at the top of the tank body; the supporting pipe structure comprises a lantern ring, a supporting plate and a clamping ring. The lantern ring sleeves the top of the tank body; the supporting plate is arranged outside the lantern ring; the flexible pipe supporting device has the advantages that the flexible pipe connected out of the air outlet end of the tank body is supported, and the pulling force of the two ends of the flexible pipe to the connector is reduced.

The application relates to a photoelectric functional film and a light-transmitting assembly, which comprises a functional layer, at least one substrate body and a flexible circuit board. Each substrate body is arranged in a laminated mode with the functional layer, a conductive layer is arranged on a surface of at least one substrate body which faces the functional layer or a surface of at least one substrate body which faces away from the functional layer, and at least one substrate body further comprises an extension part which extends out of the conductive layer. An electrode of the flexible circuit board is electrically connected with at least one conductive layer, and a circuit board substrate of the flexible circuit board is limited on the extension part. The extension part is used as a bearing structure of the flexible circuit board, so that the pulling force borne by the electrode and the electrically connected conductive layer is reduced, the probability of electrode falling off from the conductive layer is reduced, and the photoelectric functional film can reliably maintain the regulation function.

The application is suitable for the technical field of batteries, and provides a battery monomer, a battery device and a power utilization device. The battery monomer comprises: a shell; an electrode terminal installed on the shell; an electrode assembly accommodated in the shell, the electrode assembly having a tab; an adapter comprising a first connecting portion, a second connecting portion and a bending portion, the first connecting portion being electrically connected with the tab, the second connecting portion being electrically connected with the electrode terminal; and the bending portion being arranged between the first connecting portion and the second connecting portion, the bending portion being bent towards one side of the adapter and formed with a groove. The battery monomer provided by the application can reduce the risk of tab fracture and improve the cycle life of the battery monomer.

This invention relates to the field of switchgear and discloses an outdoor fully enclosed insulated ring network switchgear, comprising a base, an opening and closing mechanism at the top of the base, an inlet mechanism inside the opening and closing mechanism, a shielding canopy fixedly connected to the top of the opening and closing mechanism, and a cleaning mechanism outside the opening and closing mechanism. The opening and closing mechanism includes multiple fixed brackets, the bottom ends of which are fixedly connected to the top of the base. Two of the fixed brackets are internally slidably connected to sliding rods, and each sliding rod is externally fixedly connected to a fixed rod. This invention allows for convenient opening and closing of the switchgear, enabling operators to inspect and maintain the equipment from three directions without disassembling the cabinet as in traditional methods, significantly reducing maintenance difficulty and workload. When the switchgear is closed, the protective shell compresses the sealing gasket to form a tight seal, effectively preventing dust and moisture from entering.

The present application relates to the technical field of circuit board production, and discloses a production line and a production method for LED circuit boards. A production line for LED circuit boards includes a solder paste printer, a patch machine, and a reflow soldering machine. The solder paste soldering machine includes a steel mesh, and the steel mesh is provided with a hollow portion. The hollow portion corresponds to the soldering portion of the circuit board body one by one, and the hollow portion includes a positive electrode slot and two negative electrode slots. The production line also includes a glue sticking mechanism, and the glue sticking mechanism includes a positioning seat and a tape roll mounted on the positioning seat. The positioning seat is provided with a support platform for supporting the steel mesh. The production line also includes a cutting piece, and the cutting piece includes a mounting block and a cutting blade mounted on the mounting block. When the mounting block is attached to the steel mesh, the cutting blade penetrates the positive electrode slot or the negative electrode slot. The present application can minimize the error of the head and tail lights of a row of LED lamps, and improve the reliability and stability of welding.

The utility model provides an anti-winding cotton yarn winding guide device, which relates to the technical field of cotton yarn winding guide devices, and comprises a frame plate, a through hole is formed in the top end of the frame plate, an electric push rod is arranged on one side of the frame plate, a sliding rod is mounted at the output end of the electric push rod, a buffer device is arranged at one end of a guide block, and the buffer device is connected with the guide block. The buffering device comprises two supporting rods, a check block is fixedly connected to the outer surface of the rotating shaft, and a torsional spring is arranged at one end of the rotating shaft. When the cotton yarn is pulled in the winding process, the stop block rotates through the rotating shaft to shorten the distance length of the cotton yarn which is released into the winding equipment through the pay-off equipment, so that the cotton yarn has a certain buffer space, and the situation that the surface of the cotton yarn is too tight and broken due to large pulling force is avoided as much as possible.

The utility model relates to an anti-down-leakage down jacket, which aims to solve the technical problem that down in the current down jacket is easy to leak from suture line holes, and comprises a down jacket body, an anti-down-leakage component and a tensile component, the down jacket body comprises an outer fabric, an inner fabric, a zipper and sewing lines. The inner fabric is sewn in the outer fabric, the outer fabric and the inner fabric form a down feather containing cavity, the zipper is connected with the outer fabric through lines, the sewing lines are arranged on the inner fabric, and the down feather running prevention assembly is arranged on the inner fabric; the down running prevention pattern layer is coated on the inner fabric and the suture lines; the skin-friendly layer is coated on the down running prevention pattern layer; the tensile component is arranged in the line cavity; the tensile assembly comprises a tensile piece and a wedge-shaped groove. The plurality of tensile parts are fixedly arranged in the line cavity in a linear array; two wedge-shaped grooves are symmetrically formed in the two sides of the tensile piece. The down jacket can effectively avoid down leakage of the down jacket body.

The invention relates to the technical field of automobile wire harnesses, and discloses a buffer structure and a use method thereof, buffer assemblies are arranged on a first mounting plate and a second mounting plate, and adjusting assemblies are arranged on the outer sides of the first mounting plate and the second mounting plate; when the first electric wire and the second electric wire are pulled by external force, the first fixing shaft and the second fixing shaft drive the two connecting columns to rotate, the two connecting columns drive the torsion spring to rotate, the torsion spring is stressed, and the pulling force borne by the wire harness is buffered; when the first electric wire and the second electric wire are not pulled by external force, the torsional spring drives the two connecting columns to reset, and the two connecting columns drive the first fixing shaft and the second fixing shaft to reset respectively, so that the situation that the first electric wire and the second electric wire are in a loose state and are easy to swing in the use process is avoided; and the first connector and the second connector are easy to loosen from the connecting end for a long time, so that the circuit is disconnected, and the normal use of the wire harness is influenced.

This invention discloses a tension control device for conveying plastic film in packaging bag processing, relating to the field of plastic film conveying technology. The second tension control structure of this invention includes a power conveying control unit, which is present in addition to the first tension control structure. The first tension control structure includes a first base frame, a first lower conveying roller unit, and a first upper pressure roller unit. The first lower conveying roller unit includes an angle adjustment mounting box, an angle adjustment lower roller frame, an angle adjustment upper roller frame, a lower roller assembly, and an upper roller assembly. The second tension control structure includes a second base frame, a second lower conveying roller unit, and a second upper pressure roller unit. This invention uses the first tension control structure to adjust the traction force when the plastic film is pulled, while the second tension control structure can provide both conveying speed and pulling force, thereby achieving tension control and solving the problems of low tension control accuracy and inability to adjust tension in a timely manner when the conveying speed changes in existing methods.