76results about How to "Fast winding speed" patented technology

The invention provides a composite material winding machine and a winding method, and belongs to the technical field of dry winding, the composite material winding machine comprises an underframe, a clamping mechanism mounted on the underframe, a walking trolley mounted on the underframe, and an angle control mechanism and a tension control mechanism mounted on the walking trolley; the winding angle of the composite material strip is strictly controlled through the angle control mechanism, the tension of the composite material strip is adjusted through the tension control mechanism, it is guaranteed that the tension and the wall thickness are uniform when the composite material strip is wound, and it is guaranteed that a product obtained after winding forming is stable in performance and attractive in appearance.

The invention discloses a reciprocating pultruder suitable for a glass fiber reinforced plastic bridge, and the invention relates to the technical field of pultruders. The invention comprises an extruder, the extruder is fixedly connected to the side of the support plate away from the bottom plate, the winding box is fixedly connected to the top of the bottom plate, the winding assembly is slidably connected to the inside of the winding box, the impregnation shell is fixedly connected to the top of the bottom plate, the impregnation assembly is slidably connected to the inner wall of the impregnation shell, the extrusion assembly is fixedly connected to the top of the bottom plate, one side of the winding box is fixedly connected to the side of the threading plate away from the extruder, and the remaining two threading plates are slidably connected to the inside of the impregnation shell, the number of threading plates is set to three, the three threading plates gradually become smaller, and the glass fiber yarns inserted into the three threading plates gradually come together to form a dense structure, which is conducive to improving the strength of the glass fiber reinforced plastic bridge after forming, and the glass fiber yarns unwound from the winding box are far apart, and each fiber is clearly distinguished when punching, and it is not easy to pierce the wrong hole.

The cover plate is arranged on one side, in the axial direction, of a centrifugal impeller, the cover plate is provided with a first surface and a second surface which are oppositely arranged in the axial direction of the centrifugal impeller, the first surface is arranged towards the centrifugal impeller, and an air inlet hole and an air outlet hole which penetrate through the cover plate are formed in the cover plate; at least part of the peripheral wall of the air outlet hole forms a first inclined face which is obliquely arranged relative to the axis of the centrifugal impeller, and in the direction from the first surface to the second surface, the inclination direction of the first inclined face is the same as the inclination direction of blades of the centrifugal impeller. According to the cover plate disclosed by the invention, the inclined first inclined surface is arranged at the air outlet hole, and the inclined direction of the first inclined surface is the same as that of the blades of the centrifugal impeller, so that the inclined direction of the first inclined surface is the same as the air flow movement direction, and the air flow can have the radial rotation speed as much as possible when flowing out of the air outlet hole; therefore, the air outlet speed can be increased, and the cooking effect is improved.

The utility model relates to the technical field of clothes processing equipment, in particular to a fan and drying equipment comprising the fan, and aims to solve the problem that the drying efficiency of the drying equipment is poor due to the fact that the fan of the existing drying equipment is limited by the mounting space and the air volume is small. In order to achieve the purpose, the fan comprises a volute and an impeller installed in the volute, blades are arranged on the impeller, an exhaust channel is arranged between the outer ends of the blades and the first inner wall of the volute, the outer ends of the blades are the ends away from the center of the impeller, and a groove structure is arranged at the position, corresponding to the exhaust channel, of the second inner wall of the volute. The groove structure is sunken towards the outer side of the volute in the axis direction of the impeller so that the cross sectional area of the exhaust channel can be increased. According to the utility model, the groove structure which is sunken along the axial direction of the fan is arranged on the volute of the fan, so that the axial space of the fan can be fully utilized to increase the cross sectional area of the exhaust channel, and the drying efficiency of the drying equipment can be improved.

The utility model discloses a fire engineering water belt rolling device which comprises a device shell, a rolling round groove is formed in one side of the device shell, a supporting frame is fixedly installed at the bottom of the device shell, a through groove opening communicated with the rolling round groove is formed in the middle of one end of the device shell, and a hollow rolling barrel is rotationally connected to the middle of the rolling round groove. A mounting notch is formed in the surface of the hollow winding pipe, a pushing dismounting part is mounted on the surface of the hollow winding barrel, an n-shaped plate capable of being automatically lifted and adjusted is mounted in the winding circular groove, an extrusion drainage roller in contact with the surface of the hollow winding barrel is mounted in the n-shaped plate, and a handle rod convenient to carry and carry is fixedly mounted at the top of the device shell. The water hose winding device is provided with an effective dragging winding structure and an extrusion drainage structure, extrusion drainage can be conducted on a water hose in the dragging winding process, and therefore the water hose winding efficiency is effectively improved, the water hose winding speed is effectively increased, and the labor intensity of manual winding is effectively reduced.

The utility model discloses an electric heating air duct which comprises a shell, a fan assembly and a heating device, the shell comprises an air duct part and a handheld part connected to one side of the air duct part, an air inlet is formed in one end of the air duct part, and an air outlet is formed in the other end of the air duct part. The air duct part is provided with a mounting section close to the air inlet and an air guide section extending from the mounting section to the air outlet, the radial size of the mounting section is larger than that of the air guide section, and the air guide section is gradually shrunk in the direction away from the mounting section; the fan assembly is arranged in the mounting section; the heating device comprises a silicon carbide heating body, the silicon carbide heating body is arranged in the air guide section or the mounting section, and a heat exchange surface is formed on the surface of the silicon carbide heating body so as to exchange heat with airflow flowing through the air duct part. According to the technical scheme, the air outlet speed of the electric heating air duct can be increased.

The present invention relates to a device (10) for manufacturing a fiber-reinforced component (1) according to a three-dimensional winding method, the device comprising at least one computer-controlled winding machine, which is used to wind at least one fiber support (11) arranged on a rotating shaft (16) using a linear continuous fiber strip provided on at least one reel (18) in at least one winding pattern, wherein the at least one winding machine is a robot arm (13) with multiple rotation axes, which simultaneously lays at least two fiber strips (12), wherein at least one robot arm (13) is used to simultaneously lay the at least two fiber strips (12) in a distributed manner on at least two fiber supports (11) respectively arranged on separate rotating shafts (16) and / or to simultaneously lay at least two fiber strips (12) on only one fiber support (1) arranged on a separate rotating shaft (16).

The invention relates to the field of carbon fiber filaments, and discloses a carbon fiber filament winding device and a using method thereof.The carbon fiber filament winding device comprises a winding mechanism, the top of the winding mechanism is fixedly connected with a cutting mechanism, the top of the winding mechanism is fixedly connected with a conveying mechanism, and the bottom of the winding mechanism is fixedly connected with a lifting mechanism; and the bottom of the winding mechanism is fixedly connected with a carrying mechanism. According to the carbon fiber yarn winding device and the using method thereof, by arranging the winding mechanism, the winding device is very convenient to use, a next winding component can be rapidly replaced, and the carbon fiber yarn does not need to be newly collected after being used up, so that the winding speed of the whole winding device during winding is increased, and the winding efficiency is improved. And the rolling efficiency during subsequent rolling is improved, the working time needed by the whole rolling device is shortened, the use efficiency of the rolling device is improved, and long-term use of the rolling device is facilitated.

The utility model discloses a novel take-up type winding mechanism for a polytetrafluoroethylene film, which relates to the technical field of winding mechanisms, and adopts the technical scheme that the novel take-up type winding mechanism comprises a case, two cross beam swing arms are connected in the case through bearings, a second connecting shaft is fixedly arranged between the two cross beam swing arms; a floating guide roller is connected between the two cross beam swing arms through bearings, a first air cylinder is installed in the machine box, the tail end of the first air cylinder is movably connected with the machine box through a rotating shaft, a connecting frame is installed at the output end of the first air cylinder, and a second connecting shaft penetrates through the connecting frame and is connected with the connecting frame through a bearing. According to the automatic winding machine, the rhythm of the whole production process is improved, the winding quality is greatly improved, the consistency and excellent quality of products are ensured, the situation of excessive stretching or insufficient tension of materials in the winding process is avoided through accurate tension control, the physical performance and quality of the materials are protected, and the labor intensity is reduced.

The present invention discloses a method for preparing melamine-polyimide composite fiber by dry spinning. A diamine substance is dissolved in an organic solvent, and then a dianhydride substance is added for reaction, and melamine is added after the reaction to continue the reaction; then an alkali is added for salt-forming reaction to obtain a water-soluble polyamic acid salt solution; melamine, paraformaldehyde and deionized water are added to a reactor, and the pH of the reaction solution is adjusted to 8 to 9, and then a heating reaction is performed to obtain a melamine resin; then a water-soluble polyamic acid salt solution is added to continue the reaction to obtain a melamine-polyimide spinning solution; the obtained spinning solution is sequentially degassed, extruded into fibers, desolventized, and wound to obtain melamine-polyimide primary fibers; the primary fibers are imidized and cooled to room temperature after treatment to obtain melamine-polyimide composite fibers. The present invention improves the stability of the spinning solution by changing the molecular chain structure of the melamine resin, and enhances the temperature resistance, flame retardancy and toughness of the fiber.

The utility model relates to the field of splitting machine equipment, and discloses split shaft splitting machine equipment which comprises a main body, a supporting table is fixedly arranged on the inner bottom face of the main body, two supporting legs are fixedly arranged on one side of the lower end face of the main body, and a conveying roller is rotationally arranged on the inner wall of the other side of the main body. And an outer side winding device is fixedly arranged on one side of the supporting table, an inner side winding device is fixedly arranged on the other side of the supporting table, a cutting module is fixedly arranged on the upper end face of the supporting table, and the cutting module comprises a second rotating motor. According to the cutting device, the supporting table fixed to the inner bottom face of the main body plays a supporting role and can fix the outer side winding device and the inner side winding device, the two supporting legs fixed to the lower end face of the main body play an auxiliary supporting role, the main body is further fixedly provided with the conveying idler wheels, and when the cutting device is used, cut materials can be conveyed; and the materials can enter the inner side winding device and the outer side winding device on the two sides of the supporting table correspondingly to be wound.

The utility model discloses a traction device for carbon fiber plate production, which comprises a frame with two ends provided with conveyors, opposite assembly plates are mounted on conveying belts of the conveyors, a bottom plate is connected between the assembly plates, a pressing plate connected with a linear motion mechanism is arranged above the bottom plate, and the linear motion mechanism is connected with the pressing plate. Rubber pads are connected to the sides, close to each other, of the pressing plate and the bottom plate, an offset detection mechanism is arranged between the pressing plate and the bottom plate, an auxiliary conveying assembly is arranged between every two adjacent conveyors, each auxiliary conveying assembly comprises a conveying roller driven by a motor, and a bearing roller is arranged below each conveying roller. Compared with the prior art, by arranging the linear motion mechanism, the conveyor, the assembly plate, the pressing plate and the bottom plate, compared with the prior art, the carbon fiber plate winding device is matched, the carbon fiber plate winding speed is increased, the working efficiency is improved, the auxiliary conveying assembly is arranged to assist the carbon fiber plate to move forwards, more labor is saved when the pressing plate pulls the carbon fiber plate, and the carbon fiber plate winding efficiency is improved. And the working efficiency is improved.

The utility model discloses a spring sampling jig, relates to sampling equipment technical field, wherein the spring sampling jig includes jig casing, winding piece and drive subassembly, jig casing has mounting space; the winding piece is rotationally connected to the outer wall of the jig shell. The driving assembly comprises a transmission part and a driving part, the transmission part is mounted in the mounting space, and one end of the transmission part is in transmission connection with the winding part; the driving part is mounted on the outer wall of the jig shell and extends into the mounting space to be in transmission connection with the other end of the transmission part; wherein the driving part drives the transmission part to drive the winding part to rotate, so that the steel wire is wound on the winding part. According to the technical scheme, the steel wire winding speed can be increased, and then the spring sampling efficiency is improved.

The invention relates to the field of shoe accessories, in particular to a counter production line and a production process thereof. A counter production line comprises an extrusion molding device, a cooling device, a winding device and a rewinding device, and the winding speed of the winding device is adjustable. The extrusion molding device comprises an extruder and an extrusion die positioned at an output port of the extruder; the extrusion die is provided with adjusting assemblies for adjusting the width of the middle and the two sides of the extrusion opening correspondingly. The adjusting assembly reduces the width of the two sides of the extrusion opening, so that the extruded sheet is in the state that the two sides are thin and the middle is thick, and secondary cutting is not needed. And when the thickness of the middle or the two sides of the produced counter needs to be adjusted, the width of the middle or the two sides of the extrusion opening is adjusted through the adjusting assembly, so that the corresponding size is achieved. And when the width size of the counter needs to be adjusted, the rolling speed of the rolling device can be increased under the condition that the extrusion speed is not changed, so that a finished product reaches the required size in the stretching process after the sheet is extruded.

The utility model belongs to the technical field of winding devices, and particularly discloses a cable winding device which comprises a winding drum, the winding drum comprises two oppositely distributed baffle discs and a central shaft, and the central shaft is rotatably connected between the two baffle discs. The front frame is pulled to drive the movable rod and the limiting block to move in the connecting frame, the limiting block abuts against the outer wall of the limiting block movable cavity in the connecting frame, traction force is transmitted into the connecting frame, and therefore the connecting frame is pulled to move along with the connecting frame, and when the connecting frame stops moving, the limiting block does not transmit force to the connecting frame any more; the connecting frame continues to move forwards due to inertia, the limiting block and the movable rod synchronously move in the limiting block movable cavity and the movable cavity respectively, and due to the fact that one side of the limiting block is fixed to the spring, the limiting block can drive the spring to stretch and deform in the moving process. Inertia force from the connecting frame is buffered to a certain degree, overall out-of-control is avoided, and meanwhile the moving process is more stable.

The invention discloses a steel structure house ventilation device which comprises a fixed air duct, a fan, an air outlet nozzle and a direction adjusting assembly used for adjusting the angle of the air outlet nozzle, and the direction adjusting assembly comprises an alarm driving plate, a rotating sleeve and a transmission piece. When the air flow direction needs to be adjusted, the direction adjusting assembly adjusts the direction of the air outlet nozzle, so that the air circulation direction is conveniently adjusted, the steel structure house with a large space is conveniently subjected to air exchange and ventilation, and the air exchange and ventilation efficiency is improved. And the ventilation effect is improved.

The utility model relates to the technical field of aluminum plastic film processing, and discloses an aluminum film cutting device which comprises a cutting frame, a fixing frame is fixedly installed on the outer surface of the cutting frame, and a tightening fixing mechanism is fixedly installed on the inner wall of the fixing frame. The tightening and fixing mechanism comprises a sliding frame, a first hydraulic cylinder, a first hydraulic rod, a second hydraulic cylinder, a second hydraulic rod and a pressing plate, a sliding groove is formed in the inner wall of the fixing frame, and an aluminum plastic film is rotationally installed on the inner surface of the cutting frame. The second hydraulic rod drives the pressing plate to move downwards, the pressing plate fixes the aluminum plastic film, then the first hydraulic cylinder drives the first hydraulic rod to move outwards, the first hydraulic rod drives the second hydraulic cylinder to move outwards through the sliding frame, the second hydraulic cylinder drives the pressing plate to move outwards through the second hydraulic rod, and the pressing plate drives the aluminum plastic film to be straightened. And then the cutting machine moves downwards to cut off the aluminum plastic film.

The utility model relates to the technical field of plastic film production, and discloses a quantitative winding device for polymer plastic film production, which comprises a winding frame, a plurality of mounting rollers are rotatably arranged on the left side and the right side of the inside of the winding frame, one end of each mounting roller extends to one side of the outside of the winding frame, and a plurality of winding motors are fixed on the right side of the winding frame. A roller changing assembly is arranged on one side of the winding frame and comprises a first mounting groove formed in one side of the winding frame, and a roller changing box is fixed to one side of the connecting plate. According to the utility model, through the arrangement and use of the guide roller and the cutting roller, after the previous winding roller completes quantitative winding, the plastic film is cut through the cutting blade on the cutting roller, and then the end part of the plastic film is dragged to the next winding roller through the guide roller to be continuously wound, so that the cutting of the plastic film after quantitative winding is realized; and after cutting, the winding roller is automatically replaced to continue winding and then cutting, manual operation is not needed in the whole process, and the winding speed is increased.

The present application relates to the field of wire detection, and in particular to a precise transposed wire laser detection system for ultra-high voltage transformers, comprising a fixed bracket, a rotating bracket, a laser distance sensor, a driving device, a speed sensor, a controller, and a display; the rotating bracket is rotationally connected to the fixed bracket, the driving device is transmission-connected to the rotating bracket, the laser distance sensor is fixedly connected to the rotating bracket, the speed sensor is fixedly connected to the fixed bracket, the speed sensor, the driving device, the laser distance sensor, and the display are respectively connected to the controller; the rotating bracket is arranged around the wire, and the laser transceiver port of the laser distance sensor is directly opposite to the central axis of the wire; the speed sensor is used to detect the axial transmission speed of the wire, the controller controls the driving device and the laser distance sensor to work according to the axial transmission speed of the wire, the driving device is used to drive the rotating bracket to rotate around the wire, and the laser distance sensor is used to measure the distance of the protrusion on the surface of the wire.

The utility model relates to the technical field of monitoring equipment, in particular to dam internal deformation monitoring equipment. The inclinometer comprises an inclinometer body, a plurality of operational keys are installed on one side of the inclinometer body, a cable is installed on the upper surface of the inclinometer body, an inclinometer pipe is arranged on one side of the inclinometer body, and a winding structure is arranged on the upper surface of the inclinometer body and comprises a fixing plate and a connecting plate. The fixing plate and the connecting plate are fixedly connected with the inclinometer, the inner wall of the fixing plate and the inner wall of the connecting plate are rotationally connected with a rotating column, the arc surface of the rotating column is fixedly connected with a rotating wheel, the inner wall of the fixing plate is fixedly connected with a conductive sliding ring, and the rotating end of the conductive sliding ring is electrically connected with a connecting wire. The problems that due to the fact that the manual winding speed of a worker is low, the worker drags the cable to rub the ground in the winding process, the surface of the cable is abraded after a long time, and the accuracy of monitoring equipment is affected when the cable is seriously abraded are solved.

The utility model discloses a safety belt winding mechanism of a retractor, which is characterized in that a side pressing plate is arranged on one side of a placing seat and is connected with a first movement driving assembly, a first moving seat is arranged on the other side of the placing seat and is connected with a first movement adjusting assembly, and a first rotating disc and a second rotating disc are arranged on the first moving seat; a second moving seat is arranged on the first rotating disc, the second moving seat is connected with a second moving adjusting assembly, a positioning pin is arranged on the second moving seat, the positioning pin can be inserted into a positioning hole of a retractor shell, a receding through hole is formed in the first rotating disc, the second rotating disc is arranged corresponding to the receding through hole, and a transmission groove is formed in the second rotating disc; an outer protruding part at the side end of the coiler mandrel can be inserted into the transmission groove, the second rotating disc is arranged on a third moving seat, and the third moving seat is arranged on the first moving seat and connected with a second moving driving assembly. Automatic winding of the safety belt can be achieved, and the winding efficiency and quality are effectively improved.

The invention belongs to the technical field of textile, and particularly relates to a production device for water-broken colored fancy yarn and a process for producing the water-broken colored fancy yarn by adopting the production device. The production device of the water color breaking fancy yarn comprises a dyeing mechanism, a color breaking mechanism and a packaging mechanism. Yarns are dyed by the dyeing mechanism and subjected to color breaking by the color breaking mechanism and then are packaged into loose cone yarns by the packaging mechanism. The dyeing mechanism comprises a dye liquor supply system, a dye vat and a dye wheel, and the dye wheel is located in the dye vat. The color breaking mechanism comprises a water supply system, a water supply meter, a water feeding contact and a water feeding roller, the water supply system is connected with the water feeding contact through the water supply meter, and the water feeding contact is connected with the loose cone yarn through the water feeding roller. Yarn pretreatment is not needed, grey yarn is used for dyeing, and the production process is short; a single yarn can form a fancy yarn in the winding process, the operation is simple, the winding speed is high, and the production efficiency is high; the manufactured fancy yarn is unique in style and rich in chaotic, hazy and three-dimensional aesthetic feeling, and has the water and ink-like visual effect.

The improved air purifier is characterized in that a lower air guide groove is formed in the upper portion of a lower shell, a lower air outlet is formed in the center of the lower air guide groove, an arc-shaped lower air guide face is arranged on the edge of the upper portion of the lower air guide groove, and the lower portion of a wind wheel is located in the lower air guide groove; an upper air outlet is formed in the periphery of the motor installation base in the circumferential direction, an upper air guiding protruding part protruding upwards is arranged on the upper portion of the motor installation base, a lower air guiding protruding part protruding downwards is arranged on the lower portion of the motor installation base, the lower air guiding protruding part is inserted into the wind wheel, and an arc-shaped first upper air guiding face is arranged on the outer edge of the upper portion of the upper air guiding protruding part. And an arc-shaped second upper air guide surface is arranged on the outer edge of the lower part of the lower air guide convex part. The wind wheel does not need to be covered with a protective cover, the number of parts is reduced, the structure is simplified, cost is reduced, air is guided through the lower air guiding face, the first upper air guiding face and the second upper air guiding face, air volume loss is reduced, and the air outlet volume and the air outlet speed are improved.

The invention belongs to the technical field of textile, and relates to a production process of mercerized cotton-imitated polyester yarn. According to the process, after POY and FDY are compounded, the polyester yarn with excellent glossiness, silky feeling and drapability is prepared through specific drafting deformation and heat setting treatment. Wherein the POY is prepared by adopting a mode of increasing the winding speed, the elongation at break is reduced, and the crystallinity and the orientation degree are improved; the drafting deformation multiple and the heat setting temperature are accurately controlled. The method does not need to depend on a method which is high in cost and poor in environmental protection property, the crystallinity and orientation degree of the POY are increased by optimizing the preparation process of the POY and increasing the winding speed, and after the POY is compounded with the FDY, the drafting deformation multiple, the drafting deformation temperature and the heat setting temperature are accurately controlled, so that the production efficiency of the POY is improved. The mercerized cotton-imitated polyester yarn which is high in glossiness, good and durable in silky feeling and excellent in drapability is successfully prepared.

The high-speed non-woven fabric winding device comprises a rack, wherein a feeding and flattening device, an atomizing high-speed traction device, a positioning device, a processing device, a discharging high-speed traction device and a cutting and winding device are sequentially arranged on the rack from left to right; according to the designed high-speed non-woven fabric winding device, the whole process is automatic, manual operation is not needed, the winding speed is high, the production efficiency is improved, meanwhile, static electricity can be removed, dust adsorption can be reduced, fluff can be scraped away in the non-woven fabric winding process, the quality of the wound non-woven fabric is guaranteed, the wound non-woven fabric can be cut, and the production efficiency is improved. The non-woven fabric winding device has the advantages that the automation degree is high, the practicability is good, and the large-scale popularization is facilitated.

The application relates to a built-in current-limiting reactor, which comprises an upper yoke, a coil and a lower yoke arranged in sequence from top to bottom, wherein the upper yoke is provided with an upper yoke frame, the upper side of the upper yoke frame is provided with an upper connecting seat, the inside of the upper yoke frame is provided with upper silicon steel sheets, the upper silicon steel sheets are insulated from the upper yoke frame and connected with the upper connecting seat, the upper connecting seat is connected with a corresponding upper clamp of a transformer, the lower yoke is provided with a lower yoke frame, the lower side of the lower yoke frame is provided with a foot pad, the inside of the lower yoke frame is provided with lower silicon steel sheets, the lower silicon steel sheets are insulated from the lower yoke frame and connected with the corresponding foot pad, the foot pad is connected with a corresponding lower clamp of the transformer, vertical screw rods are arranged between the upper yoke and the lower yoke, the upper ends of the vertical screw rods are fixedly connected with the corresponding upper connecting seats, the lower ends of the vertical screw rods are fixedly connected with the corresponding foot pads, upper lead wire rows and lower lead wire rows are arranged outside the coil, and the upper lead wire rows and the lower lead wire rows are respectively connected with corresponding low-voltage lead wire rows of the transformer. The built-in current-limiting reactor has lower cost, smaller loss, stronger short-circuit resistance, shortened production cycle and reduced installation space.

The embodiment of the invention provides a logistics tracking method and product, electronic equipment and a storage medium, and belongs to the technical field of block chains. The method comprises the following steps: acquiring an uplink request of data acquisition equipment, adding the data acquisition equipment into a block chain system under the condition that the uplink request passes verification, and constructing the data acquisition equipment as a light node; constructing a logistics management system as a consensus node, and controlling the logistics management system to perform uplink processing on the logistics data sent by the data acquisition equipment; wherein the logistics management system is a consensus node; sending an uplink result generated by the logistics management system to the data acquisition equipment; and under the condition that the data acquisition equipment receives the preset number of uplink results, controlling the data acquisition equipment to exit the block chain system. According to the embodiment of the invention, the data uplink risk can be reduced.

The utility model discloses a PLA (polylactic acid) film printing and overprinting drying device, and relates to the technical field of PLA film printing. The PLA film printing and overprinting drying device comprises a processing bottom plate, a drying device is arranged on the processing bottom plate, the drying device comprises a drying unit and an adjusting unit, the drying unit is installed on the adjusting unit, and the drying unit comprises an upper rotating roller and a lower rotating roller which are located at the upper position and the lower position of the adjusting unit respectively; the same sides of the upper rotating roller and the lower rotating roller are correspondingly connected with rotating shafts respectively, the two rotating shafts communicate with the same U-shaped pipe, and the other end of the U-shaped pipe is connected with a hot air pipe. High-temperature hot air is filled into the upper rotating roller and the lower rotating roller through the hot air pipe arranged in the drying unit, so that the temperature of the upper rotating roller and the temperature of the lower rotating roller are increased, contact with the PLA film is completed when the PLA film is wound after being printed and overprinted, the two ends of the PLA film are dried, and the drying efficiency and the energy utilization rate are improved.

The invention relates to the technical field of centrifugal fans, in particular to an efficient energy-saving centrifugal fan which comprises a shell, an air inlet pipe and an impeller. The bottom of the cavity of the shell is provided with an installation chamber which is shrunk inwards, the middle pipe is vertically installed in the installation chamber of the shell, the inner stator is installed on the outer wall of the upper portion of the middle pipe, the outer rotor is rotatably installed on the outer side of the inner stator, the impeller is installed on the outer wall of the outer rotor, and the casing pipe is installed in the installation chamber of the shell. The impeller is located on the upper portion of the cavity of the shell and is aligned with the air outlet of the shell, a sleeve is installed on the lower portion of the outer rotor, the sleeve is arranged on the outer side of the middle of the middle pipe in a sleeving mode, and a plurality of air guide blades are installed on the sleeve, arranged in an inclined mode and located in the air guide channel; the exhausted airflow passes through the inner stator and the outer rotor, efficient heat dissipation is carried out, two-stage accelerated exhaust is adopted, and the air outlet speed is increased.