970 results about "Bobbin" patented technology

The invention provides a bottom thread winding device capable of well winding a bottom thread relative to a bobbin. A bottom thread winding device (60) is provided with: a bobbin (20) having a shaft part (23) and disk parts (21, 22) provided at both ends of the shaft part; a rotation mechanism (61) that imparts a rotation action to the spool; and a bottom thread supply mechanism (63) having a nozzle (64) for sending out a bottom thread (D) from a bottom thread supply source together with air, and winding the bottom thread on a shaft portion of the bobbin by rotating the bobbin by the rotating mechanism while sending out the bottom thread toward the bobbin by the bottom thread supply mechanism. The shaft portion of the bobbin is provided with a threading hole (231) penetrating in the direction perpendicular to the shaft portion, and the bottom thread supply mechanism winds the bottom thread after inserting the bottom thread into the threading hole.

The utility model belongs to the technical field of magnetic separators, and particularly relates to an electromagnetic separator with a heat dissipation coil, which comprises a frame, a conveying mechanism mounted on the frame, a transmission mechanism connected with the conveying mechanism, and a magnetic separation mechanism mounted on the frame. The magnetic separation mechanism comprises a shell, a winding reel is mounted in the shell, the winding reel is connected with a mounting frame, and a mounting ring is mounted on the mounting frame; each installation ring is provided with a plurality of winding supporting rods, electromagnetic wires are wound around the outer sides of the winding supporting rods of the installation rings, the electromagnetic wires sequentially wind around the winding supporting rods of the installation rings from inside to outside along the centermost installation ring, and a heat dissipation gap is reserved between every two electromagnetic wire layers. By arranging the mounting ring and the winding supporting rod, a plurality of gaps are reserved between the electromagnetic coils, heat dissipation of the electromagnetic coils is facilitated, the ventilation holes, the draught fan, the coil pipe, the oil cooler and the temperature sensor are additionally arranged, the temperature in the magnetic separation mechanism can be detected and adjusted in real time, and normal operation of the device is guaranteed.

The utility model discloses a cone yarn transfer device, and relates to the technical field of cone yarn transfer devices.The cone yarn transfer device comprises a transfer table, the transfer table is connected with a baffle and a conveying mechanism, the conveying mechanism is used for driving a packaging bag to slide in the direction close to the baffle, and the transfer table is slidably connected with a push plate; the transfer table is connected with a first driving part, the first driving part is used for driving the push plate to slide in the direction close to or away from the supporting structure, and when the packaging bag abuts against the baffle, the packaging bag corresponds to the push plate. The packaging bags are driven to move to the supporting structure through the conveying mechanism, the push plate and the first driving piece, workers do not need to place the packaging bags on the supporting structure, and the efficiency of moving the packaging bags to the supporting structure is improved.

The invention provides a glass fiber yarn roll taking and placing method and system based on machine vision, and relates to the technical field of visual 3D taking and placing, and the method comprises the steps: collecting a glass fiber yarn roll image; inputting the glass fiber yarn roll image into a pre-trained YOLOv8 target detection model, and outputting an image center coordinate; establishing a mapping relation between an image coordinate system and a real world coordinate system based on the checkerboard image; according to the mapping relation, the image center coordinates are converted into real world center coordinates through a bilinear interpolation method or an adjacent interpolation method; establishing a regression coordinate correction model based on geometric insight; inputting the real world center coordinate into the regression coordinate correction model, and outputting an accurate center coordinate; the accurate center coordinates are input into a robot control platform, and the joint angle of the mechanical arm is output; according to the joint angle, through a D-ACO algorithm, an optimal pick-and-place path is planned for the robot; and on the basis of the optimal taking and placing path, taking and placing of the glass fiber yarn roll are completed.

The utility model belongs to the field of false twist texturing machines, and particularly relates to a bobbin chuck for a false twist texturing machine, which is arranged on a winding frame of the false twist texturing machine, a spinning paper tube is arranged on the winding frame, a scribing groove is arranged at the right end of the spinning paper tube, and the bobbin chuck comprises a left chuck and a right chuck; the left chuck comprises a left chuck main body, a left chuck abutting part is arranged on one side of the left chuck main body in the circumferential direction, a plurality of left chuck bosses are evenly arranged on the outer side wall of the left chuck main body, and the left chuck bosses are all inclined to one side of the left chuck abutting part; the right chuck comprises a right chuck body, a right chuck abutting portion is arranged on one side of the right chuck body in the circumferential direction, a plurality of yarn lap joint openings are evenly formed in the right chuck abutting portion, a plurality of right chuck bosses are evenly arranged on the outer side wall of the right chuck body, and the right chuck bosses are all obliquely arranged on one side of the right chuck abutting portion. According to the utility model, the rotation stability of the spinning paper tube on the winding frame can be ensured, so that the cone yarn forming quality is ensured.

The utility model belongs to the technical field of molds, and relates to a full-automatic demolding mechanism for a porous conical plastic bobbin. The injection mold comprises an upper injection mold and a lower injection mold, and a positioning and fixing mold plate and a lifting plate are arranged between the upper injection mold and the lower injection mold. During injection molding, molten materials are injected into the multiple cavities through the injection molding flow dividing piece, after injection molding is completed, mold opening is carried out, the positioning and fixing mold plate is separated from the lifting plate, and therefore the sliding type shrinkage type demolding forming assembly and the conical plastic bobbin forming inner barrel are far away from each other, and in the upward moving process of the sliding type shrinkage type demolding forming assembly, the conical plastic bobbin forming inner barrel is separated from the conical plastic bobbin forming inner barrel. The inside of the sliding type contraction type demolding forming assembly is unfolded, a formed plastic part is separated from the sliding type contraction type demolding forming assembly, manual demolding is not needed, full-automatic demolding can be completed after mold opening, the automation degree is high, and the labor intensity of workers is greatly reduced.

To provide a coil device having a simple configuration and high heat dissipation.SOLUTION: A coil device 1 includes a bobbin 2, a first winding part disposed on an outer peripheral surface of the bobbin 2, a second winding part 40 disposed directly or indirectly on an outer peripheral surface of the first winding part, a first core 5a and a second core 6a attached to the bobbin 2, a case 8 that houses at least the bobbin 2, and a synthetic resin filled in the case 8. The first core side 5a has a first base portion 50 and a pair of first outer leg portions 51 that protrude from the first base portion 50 and face each other in a first direction perpendicular to the axial direction of the bobbin 2. The second core side 6a has a second base portion 60 and a pair of second outer leg portions 61 that protrude from the second base portion 60 and face each other in the first direction. The first outer leg portion 51 is separated from the second outer leg portion 61 such that a gap 12 is formed between the first outer leg portion 51 and the second outer leg portion 61 in a second direction perpendicular to the axial direction of the bobbin 2 and the first direction.SELECTED DRAWING: Figure 1

The present invention relates to a thread tension adjusting device for an embroidery machine. The thread tension adjusting device for an embroidery machine according to an embodiment of the present invention is characterized in that, as a thread tension adjusting device for an embroidery machine, it is provided on an embroidery machine equipped with a needle bar, a thread tensioner, a bobbin, and a frame, and adjusts the tension of upper thread supplied to a needle on the needle bar from a bobbin through the thread tensioner; and includes a thread tension adjusting portion including a thread tensioner lever arranged on a moving path of the upper thread supplied to the needle after being drawn from the bobbin, which controls the amount of pulling of the upper thread when rotating in contact with the upper thread, and a first actuator that provides a rotational driving force to the thread tensioner lever; at least one thread guide adjusting portion including a pair of thread guides arranged on at least one of the front end and the rear end of the thread tension adjusting portion along the moving path of the upper thread, which controls the friction of the upper thread when passing through and being in close contact with each other in contact with the upper thread, and a second actuator that provides a driving force to the pair of thread guides; and a control portion that judges the driving state of at least one of the needle bar, the thread tensioner, the bobbin, and the frame according to each of a plurality of stitch information included in embroidery data, and controls at least one of the amount of pulling of the thread tensioner lever and the friction of the upper thread between the pair of thread guides provided in the at least one thread guide adjusting portion according to the result of the judgment.

The present invention relates to a lens driving device, a camera module including the lens driving device, and an optical apparatus. Embodiments include a substrate, a housing including first and second side portions facing each other and third and fourth side portions facing each other, a bobbin arranged inside the housing, a first coil arranged on the bobbin, and a magnet arranged in the housing, the substrate including a second coil facing the magnet, the magnet including a first magnet arranged on the first side portion of the housing, a second magnet arranged on the second side portion of the housing, and a third magnet arranged on the third side portion of the housing, the second coil including a first coil unit facing the first magnet, a second coil unit facing the second magnet, and a third coil unit facing the third magnet, the first to third coil units each including a wire having a plurality of turns, and the wire of the third coil unit is narrower in width than the wire of the first coil unit.

The invention relates to the field of rewinding machines, in particular to a silk manufacturing rewinding machine which comprises a base. A rack is fixedly arranged above the base, a spool mounting seat is fixedly arranged above the base, a wire releasing and guiding mechanism is arranged on the lower portion of the rack and comprises a wire releasing frame fixedly arranged on the rack, a preliminary wire leading groove is formed in the wire releasing frame, and a guiding frame is fixedly arranged above the wire releasing frame. A wire guide through hole is fixedly formed in the guide frame, a wire tensioning mechanism is arranged on the machine frame, a wire winding reciprocating displacement mechanism is arranged on the upper portion of the machine frame, a rewinding mechanism is arranged on the top of the base, the wire guide through hole and the preliminary wire leading groove are arranged in a concentric circle structure, and polytetrafluoroethylene abrasion-resistant coatings are sprayed on the inner wall of the wire guide through hole and the inner wall of the preliminary wire leading groove. According to the silk thread winding device, the thread bodies of the silk thread spool can be transferred to the bobbin, and the situation that the rewinding effect of the silk thread bodies is affected due to the fact that the wound thread bodies are stacked at one position of the bobbin due to uneven winding is avoided.

The embodiment relates to a lens driving device comprising: a base; a first holder disposed in the base; a second holder disposed in the first holder; a bobbin disposed in the second holder; a first driving unit for moving the first holder in a z-axis direction along an optical axis; a second driving unit for moving the second holder in a y-axis direction perpendicular to the z-axis direction; and a third driving unit for moving the bobbin in an x-axis direction perpendicular to both the z-axis direction and the y-axis direction. Each of the first to third driving units includes a coil and a magnet.

The utility model relates to a device for finding out a broken yarn joint of a ring bobbin, and the device comprises an air blowing device which is used for providing a positive pressure air source; the mounting plate is positioned on one side of the blowing device; the fixing device comprises a fixing pipe, a first driving assembly and a second driving assembly, the fixing pipe is used for fixing the ring bobbin, the first driving assembly is used for driving the fixing pipe to drive the ring bobbin to rotate, and the second driving assembly is used for driving the fixing pipe to drive the ring bobbin to linearly move, so that the ring bobbin is in a moving state of moving up and down while rotating; the static electricity removing device is used for removing static electricity of yarns on the ring bobbin; the air suction traction device is used for generating negative pressure, the air suction traction device and the air blowing device are arranged on the two sides of the fixing device correspondingly, and the air suction traction device and the air blowing device form directional airflow so that the broken yarn on the ring bobbin in the moving state can be separated from the ring bobbin. The structure is high in automation degree, broken yarn does not need to be manually found, the production efficiency is improved, the labor cost is reduced, and the yarn quality is guaranteed.

The present invention relates to a winding device of a textile machine with a rotatable bobbin turret and sleeve chucks projecting from it, and to a method for changing bobbins on a corresponding winding device, wherein in a winding area of ​​the winding device at least one thread is wound onto at least one empty sleeve located on a first of the sleeve chucks until at least one finished bobbin is formed, after winding has taken place the first sleeve chuck with the at least one finished bobbin is rotated by means of the bobbin turret into a bobbin changing area of ​​the winding device, and in the bobbin changing area the at least one finished bobbin is pressed off the first sleeve chuck onto a bobbin case by means of a pressing device.According to the invention, the winding device has two separate ejection devices that are fixedly installed on or in a housing of the winding device and act side by side, wherein a first ejection device is aligned or alignable to a mandrel of a movable doffer arranged in front of the winding device and a second ejection device is aligned or alignable to the coil drawer.

This invention provides a bobbin thread quantity detection device and method, and a sewing machine. The bobbin thread quantity detection device includes two magnetic components, a guide wire, and a detection system. The two magnetic components are respectively mounted on the bobbin case and are arranged opposite to each other along the circumferential direction of the bobbin case. The guide wire is mounted on the bobbin, and the bobbin has two contact portions. The two ends of the guide wire are respectively positioned corresponding to the two contact portions. At least a portion of the guide wire is mounted on the bobbin's rotating shaft, and a bobbin thread is wound on the rotating shaft to provide pressure for the two ends of the guide wire to move towards the two contact portions. The detection system is connected to the guide wire to detect the induced current on the guide wire. During bobbin rotation, the presence or absence of an induced current on the guide wire is used to determine whether there is sufficient bobbin thread. This invention solves the problem of low accuracy in detecting the bobbin thread quantity in existing technologies.

The utility model relates to the technical field of textile, in particular to a weaving thread tightness adjusting device for a creel, which comprises a weaving frame, a plurality of fixing mechanisms are mounted on the weaving frame, a clamping plate is clamped on the fixing mechanisms, a guide mechanism is fixed on the clamping plate, a bobbin creel is rotatably mounted on the clamping plate, and the bobbin creel is fixed on the bobbin creel. An adjusting mechanism is arranged between the two guide mechanisms and comprises a tension spring and a mounting block, the mounting block and an inserting rod are fixedly connected to the clamping plate, a rotating block is rotationally connected to the inserting rod, a swing rod is fixedly connected to the rotating block, and the tension spring is fixedly mounted between the swing rod and the mounting block; a connecting rod is fixedly mounted at the end part of the swing rod, and a line pressing wheel is rotationally connected to the connecting rod; when the line pressing wheel senses the change of the tension of the weaving line, the swing rod can be driven to rotate, so that the tension spring is in an open or contracted state, and the tightness of the weaving line can be conveniently adjusted.

The invention relates to a winding device (1) for winding synthetic threads (F), comprising a machine carrier (2) for supporting a bobbin holder (20, 21) with a crossbeam (21) extending from the machine carrier (2) for supporting a traversing device (4) and a contact roller (6) for winding coils (10) onto the bobbin holder (20, 21), wherein a movable support frame (8) is arranged on the crossbeam (21) for moving the traversing device (4) and the contact roller (6), on which the traversing device (4) and the contact roller (6) are held tiltable (Φ), tiltable (θ) and yawable (Ψ) on the crossbeam (21), and an associated support frame for compensating for a load curve of the bobbin holder.

The present application relates to the technical field of bobbin weight distribution, and discloses a bobbin weight distribution system, method, device and computer equipment, the system comprising: a weighing conveyor belt, a bobbin shunt device, a first conveyor belt, a second conveyor belt, a third conveyor belt and a bobbin weight distribution device; the weighing conveyor belt is adjacent to the bobbin shunt device, used for obtaining the weight of the bobbin, and after obtaining the weight, the bobbin is conveyed to the bobbin shunt device; the bobbin shunt device is adjacent to the first conveyor belt, the second conveyor belt and the third conveyor belt, used for shunting the bobbin to the first conveyor belt, the second conveyor belt or the third conveyor belt; the bobbin weight distribution device is used for obtaining a first number of bobbins from the first conveyor belt, a second number of bobbins from the second conveyor belt and a third number of bobbins from the third conveyor belt, and completing the weight distribution of the bobbins. The present application solves the problem that it is difficult to efficiently distribute the weight of bobbins with variable weights, and ensures that the weight of each yarn package is within a set range.

A transformer assembly includes a substrate, a surface-mounted header on the substrate, a core on the surface-mounted header and including a U-shaped portion and I-shaped portion, and first and second bobbins on two legs of the U-shaped portion of the core.

The invention relates to the technical field of computerized sewing machine production, and discloses an automatic shuttle peg bottom thread replacing mechanism for a computerized sewing machine and computerized sewing machine equipment, and the automatic shuttle peg bottom thread replacing mechanism for the computerized sewing machine comprises a storage assembly and a transmission assembly; the storage component is arranged in the computer sewing machine and is used for storing the shuttle pegs; the transmission assembly is arranged in the computer sewing machine and located on one side of the material storage assembly. The tail end of the conveying mechanism is connected with a clamping assembly used for taking the shuttle pegs, and the conveying mechanism is used for driving the shuttle pegs to be conveyed between the storage assembly and the lock cylinder holes in the computer sewing machine. When the shuttle peg is replaced, the conveying assembly drives the clamping assembly to get close to the shuttle peg in the storage assembly, the clamping assembly takes the shuttle peg, then the conveying assembly transfers the shuttle peg into a shuttle peg hole in the computer sewing machine, and meanwhile the conveying assembly rotates the taken shuttle peg. The shuttle pegs are clamped and fixed in the shuttle peg holes, automatic feeding of the shuttle pegs is achieved, and on the contrary, automatic discharging of the shuttle pegs can be achieved.

The application belongs to the technical field of glass fiber yarn production equipment, and particularly relates to a double-arm unwinding bobbin mechanism of a drawing machine and a control method thereof. The double-arm unwinding bobbin mechanism comprises a bobbin stack, a fixed unwinding arm, a transverse telescopic unwinding mechanism and a supporting and transferring mechanism. The control method comprises a bobbin feeding and separating step, a bobbin taking and unwinding step and a supporting and transferring step. The application can prevent the vertical bobbin stack from affecting the subsequent supporting or sleeving operation due to the overturning or incorrect posture of the bobbin. In addition, the application can realize a one-to-many bobbin loading scheme through an AGV trolley or a front walking mechanism.

The utility model relates to a sewing machine which comprises a rotating shuttle body, a shuttle peg and a detection device. The rotating shuttle body is arranged on the machine body and internally provided with a containing cavity. The shuttle peg is rotatably arranged in the containing cavity in the axial direction of the shuttle peg, the shuttle peg comprises a first panel, a second panel and a shuttle peg shaft, a side face hole is formed in the first panel, and the reflection coefficient of the second panel is larger than that of the first panel; detection signals of the detection device correspond to the side face holes, the detection device collects the detection signals reflected by the first panel or the second panel and generates reflection signals when the shuttle peg rotates, and the rotating speed of the shuttle peg is calculated through the reflection signals. According to the invention, the surface with a high reflection coefficient is arranged on the second panel and is compared with the side surface hole in the first panel, so that the laser sensor can recognize a hole signal more accurately, and the negative influence of high reflectivity of a material on the recognition capability of the sensor is overcome; the technical problem that in the prior art, when a shuttle peg rotates, high reflectivity of the material of the shuttle peg affects the rotating speed detection accuracy is solved.

The feeding device for the automatic winder comprises supporting plates, a connecting plate is arranged between the supporting plates, and a second motor is installed on the surface of one side of the connecting plate. According to the winding device, the winding reel is placed on the fixed barrel, the first motor is started, the first motor drives the screw rod to rotate, and the through groove and the connecting block are used, so that the moving block on the screw rod can be limited, the moving block can move upwards on the screw rod, and the moving block drives the limiting block to move through the connecting block while moving; when a limiting block abuts against the inner wall of the winding reel, the winding reel can be automatically fixed to a fixed cylinder, the stability of the winding reel in the using process is conveniently kept, after winding is completed, a first motor is started, a movable block is made to move downwards, and when the limiting block is away from the inner wall of the winding reel, the winding reel can be automatically loosened; and therefore, the winding reel can be conveniently and automatically fixed and loosened, and the working efficiency of the winding reel can be improved.

The utility model relates to the technical field of installation mistake-proofing devices for textile reel pipes, and discloses an installation mistake-proofing device for textile reel pipes, which comprises two groups of installation seats, a lower clamping ring is fixedly connected to the top of each installation seat, and an upper clamping ring is rotatably connected to the top of one side of each lower clamping ring. Limiting assemblies are fixedly connected to the surfaces of the lower clamping ring and the upper clamping ring, a movable seat is fixedly connected to the bottom of one mounting seat, an adjusting assembly is connected to the interior of the movable seat in a threaded mode, and a fixed bearing is connected to the interior of the lower clamping ring in a sleeved mode; the limiting assembly comprises a supporting spring fixedly connected to the surface of the lower clamping ring and the surface of the upper clamping ring. According to the installation mistake-proofing device for the textile reel pipe, through the arrangement of the lower clamping ring, the upper clamping ring and the limiting assembly, the effect of limiting installation of the textile reel pipe body is achieved, the deviation of the fixed bearing in the axial direction or the radial direction is reduced, meanwhile, the installation end point can be visually prompted, and human judgment errors such as the situation of excessive press-fitting or incomplete in-place are reduced.

The utility model relates to the technical field of cable take-up tools, and discloses a cable take-up device for building engineering construction, which comprises a take-up table, a cable take-up device and a cable take-up device, the take-up reel is arranged in the mounting cavity and comprises a spool and a baffle disc arranged at the end of the spool, and the two ends of the spool are arranged in the mounting grooves; one end of the limiting rod is rotationally arranged on the take-up table, and the other end of the limiting rod can rotate to the mounting groove; and the output end of the driving device is linked with the bobbin, and the driving device can drive the bobbin to rotate. By means of the cable take-up device for building engineering construction, cable take-up operation can be completed conveniently and rapidly, and the take-up reel is also convenient to replace.

In an acoustic vibration device that vibrates panel material, a drip-proof structure is added while suppressing an increase in the height dimension. [Solution] The acoustic vibration device 1 comprises a frame 11 fixed to the ceiling interior material 501 side between the ceiling interior material 501 and the outer panel 502 of the vehicle, a vibration unit 12 including a cylindrical body 4 and a magnetic circuit unit 3, a voice coil 52 arranged in the magnetic gap of the magnetic circuit unit 3, a bobbin 51 around which the voice coil 52 is wound, a first damper 61 connecting the cylindrical body 4 and the bobbin 51, a second damper 62 connecting the cylindrical body 4 and the frame 11, and a drip-proof cover 2 to prevent water droplets falling from the outer panel 502 side from adhering to the second damper 62. The drip-proof cover 2 is formed in an annular shape with an open center, is attached to the vibration unit 12, and is positioned on the outer circumference side of the magnetic circuit unit 3 and above the second damper 62. The upper part of the magnetic circuit unit 3 is positioned above the drip-proof cover 2, passing through the opening 23 of the drip-proof cover 2.

An embodiment includes a bobbin provided at an outer circumferential surface thereof with a first coil, a first position sensor disposed on the outer circumferential surface of the bobbin and spaced apart from the first coil, a first magnet disposed so as to be opposite to the first position sensor, a second magnet disposed so as to be opposite to the first coil, the second magnet being configured to move the bobbin in a direction parallel to an optical axis via electromagnetic interaction with the first coil, a housing configured to support the first magnet and the second magnet; and upper and lower elastic members coupled to the bobbin and the housing, wherein the first position sensor is moved along with the bobbin.

The utility model provides a medical suture winding detection device. The medical suture winding detection device comprises a control installation box, a driving winding assembly, a driven winding assembly, a plurality of winding assemblies, a tension detection assembly and a photographing assembly. A mounting cavity is formed in the control mounting box, a first driving part, a second driving part and a third driving part are arranged in the mounting cavity, the driving winding assembly is arranged on the front wall of the control mounting box, and the driven winding assembly is arranged on the front wall of the control mounting box and located under the driving winding assembly. The multiple winding assemblies are all arranged on the front wall of the control mounting box, the tension detection assembly comprises a tension sensor and an induction wheel, and the photographing assembly comprises a mounting block and a camera. According to the medical suture winding device, medical sutures on a large bobbin and a small bobbin can be wound through the driving winding assembly, the driven winding assembly, the multiple winding assemblies and the tension detection assembly, and therefore the practical effect of the medical suture winding device in the using process is guaranteed.

The present disclosure provides a system including a warp warping machine and a creel having a plurality of positions, each position configured to support a respective fiber package thereon. The bobbin creel is provided with a first longitudinal end facing the warping machine. The system further includes a plurality of tubes, each of the plurality of tubes having a respective first end configured to receive fibers from a respective one of the plurality of positions toward the first longitudinal end of the creel.

A system for processing a rectangular material from a coil is provided. The system may include an unwinding unit configured to unwind a rectangular material from a coil wound on a bobbin, a flattening device configured to flatten the unwound rectangular material, a shaping device configured to transform the flattened rectangular material into a shaped hairpin configuration; a reader configured to recognize, based on scanning an identification code of the bobbin mounted on the unwinding unit, batch information, and a controller configured to store, based on the batch information, a reference graph of a pressing amount for each batch of the bobbin set through a test; calculate, based on the stored reference graph and a change in physical properties of a rectangular material, a pressing amount for a rectangular material; and selectively control, based on the calculated pressing amount, a pressing amount of an individual flattening roller of flattening rollers.

A plurality of fixed rails are fixedly arranged at different positions of the same height, the rail transfer device comprises a rail transfer frame, a movable rail and a rail transfer driving device, the rail transfer frame is fixedly installed between the adjacent fixed rails, and the movable rail is fixedly installed between the movable rail and the rail transfer driving device. The rail transfer frame is provided with a rail transfer slide way perpendicular to or crossed with the extending direction of the fixed rails, the movable rails are slidably installed on the rail transfer slide way, and one end or two ends of each movable rail in the length direction can be connected with one end of the adjacent fixed rail in an aligned mode. The rail transfer driving device drives the movable rail to slide back and forth along the rail transfer sliding way so as to be aligned and connected with the different fixed rails, the cotton conveying trolley used for conveying cotton rolls or bobbins can move along the movable rail and the fixed rails which are aligned and connected, and the control system controls the rail transfer driving device and the cotton conveying trolley to start and stop. According to the invention, the conveying route of the material can be flexibly changed in real time, the system adapts to a complex plant environment, and the working space of a plant is released.