31 results about "Tube drawing" patented technology

The utility model relates to a full -automatic pipe drawing machine belongs to electric power industry plastic pipe production technical field, including frame, the frame top is installed and draws the strip mechanism and rotating mechanism, is equipped with the hopper in rotating mechanism top, draws the strip mechanism and includes X direction linear module, Y direction linear module, draws the strip motor and rigidity axle, Y direction linear module is fixed in the slide table of X direction linear module, draws the strip motor and is fixed in the slide table of Y direction linear module, and rigidity axle is connected with the output shaft drive of draws the strip motor, rotating mechanism includes support plate A, support plate B, rotating frame and rotating motor, and rotating frame both sides are connected with support plate A, support plate B rotation respectively, and rotating frame one end is connected with rotating motor transmission, and the both sides of rotating frame are equipped with the grooved index plate, the utility model has realized the automation of plastic pipe spiral strip's automatic drawing, has got rid of manual operation, has improved production efficiency, has reduced production cost, has improved product pass rate, has guaranteed the unity of product size.

The utility model discloses a tube drawing and flanging all-in-one machine for a fluorine-lined liquid level meter, and relates to the field of liquid level meter processing equipment. The pipe drawing machine comprises a main body frame, a platform, a winch, a portal frame and the like, and the winch is arranged at one end of the main body frame; a straight pipe flanging electric push rod and a lifting stand column are arranged on the side portion of the platform, and a temperature sensor, an alarm and a water spray nozzle are matched to guarantee the machining quality. The device integrates pipe drawing, straight pipe flanging and branch through flanging functions, 14 universal wheels are arranged at the bottom, the device can move flexibly and adapt to workpieces of different specifications, operation is easy and convenient, and space and cost are saved.

This invention discloses a disc-type tube drawing machine for heat dissipation tube processing, relating to the field of heat dissipation tube processing. It primarily addresses the technical problems of lacking online real-time detection in key processes of heat dissipation tube processing, leading to untimely detection of abnormal conditions, high defect rates, significant raw material waste, and low production efficiency. Specifically, it adds two independent dynamic annular diameter detection components between the bending and welding sections and after the diameter maintenance section. A wedge-type displacement conversion structure is used to convert radial dimension changes of the tube into axial displacement. Displacement sensors detect the tube's curvature and annular diameter in real time. Simultaneously, a disc-type multi-roller progressive bending structure improves welding accuracy, circumferential cutting removes weld slag, and multiple diameter maintenance passes ensure dimensional consistency. This constructs a complete "processing-detection-feedback" closed-loop production system, improving product qualification rate, production continuity, and equipment versatility. It is suitable for the automated processing of various types of heat dissipation tubes.

This utility model relates to the field of copper tube processing technology and discloses a copper tube drawing machine, including a mounting plate. The inner wall of the mounting plate is provided with a disassembly mechanism for convenient disassembly and maintenance. A circulation mechanism is fixedly connected to the bottom of the mounting plate for collecting and circulating lubricating oil. A protective mechanism is fixedly connected to the rear side of the mounting plate for protecting the internal structure. A mold is fixedly connected to the top surface of the mounting plate near the edge. The disassembly mechanism includes a guide groove located on the inner wall of the mounting plate. Multiple sliding grooves are formed on the top of the mounting plate near the edge. In this utility model, by pulling the second limiting plate, the clamping rod is pulled to compress the spring through the first limiting plate and move away from the inner wall of the clamping groove, achieving the purpose of rapid disassembly for maintenance, accelerating maintenance efficiency, and reducing maintenance costs.

The utility model discloses a continuous borosilicate glass ampoule bottle tube drawing forming device which comprises a shell frame, a chain scraper conveyor is rotationally connected to the inner side of the shell frame, a socket is arranged on the outer wall of the chain scraper conveyor, an ampoule bottle body is inserted into the socket, a first fixing frame is arranged at one end of the top of the shell frame, and a fixing plate is connected to the bottom of the first fixing frame in a lifting mode. A plurality of groups of mounting frames are arranged at one end of the fixing plate, second motors are mounted at the tops of the mounting frames, clamping drawing heads are rotationally connected to the inner sides of the mounting frames, through holes are formed in the inner sides of the clamping drawing heads, a compressed air pump is mounted at the top of the first fixing frame, an air outlet of the compressed air pump is connected with an air supply pipe, and one end of the air supply pipe is connected with the fixing plate; and the fixing plate is communicated with the clamping drawing head through a hose. According to the device, the phenomenon that ampoule bottle body materials remain on the inner side of the clamping and drawing head can be avoided, so that it is guaranteed that the clamping and drawing head can make normal contact with ampoule bottle bodies, normal operation of equipment is guaranteed, and the sealing efficiency and the working continuity are improved.

The utility model provides a traction structure for stretching a copper pipe. Belongs to the field of copper pipe processing. According to the technical key points, the device comprises a driving mechanism, the driving mechanism comprises two supporting frames which are symmetrically arranged, rotating shafts are symmetrically and rotationally connected between the two supporting frames, a motor is fixedly connected to one side of one supporting frame, and the output end of the motor is fixedly connected with one rotating shaft; chain wheels are symmetrically and fixedly connected to the outer sides of the two sets of rotating shafts, chains are connected between the two sets of chain wheels on the same side in a meshed mode, and a plurality of cross beams are evenly and fixedly connected between the two sets of chains; the fixing mechanism comprises guide plates which are symmetrically and fixedly connected to the side, away from the rotating shaft, of the cross beam, a guide rod slidably penetrates through the interior of each guide plate, and clamping blocks are fixedly connected to the opposite sides of the guide rods on the two sides; the utility model aims to provide a traction structure for stretching a copper pipe. The traction device is used for improving the copper pipe traction efficiency.

The utility model provides a heat-resistant glass kiln tube drawing production device, which belongs to the field of glass production, and comprises a cutting assembly, the cutting assembly comprises a V-shaped plate, an annular plate, two sliding blocks and two cutting knives, the V-shaped plate penetrates through a supporting plate and is arranged in a sliding manner, the annular plate is fixedly arranged on the V-shaped plate, and the two sliding blocks are arranged on the V-shaped plate; arc-shaped guide rods are fixedly arranged at the two ends of one side of the annular plate correspondingly, and the two arc-shaped guide rods penetrate through the two sliding blocks correspondingly and are arranged in a sliding mode. The cutting assembly and the driving assembly are arranged, automatic pipe cutting operation is achieved, work efficiency is improved, and practicability is improved; a limiting assembly is further arranged, so that the flatness of a notch is ensured, the size error is avoided, and the stability of cutting work is improved; and a threaded rod is further arranged, so that the cutting requirements of glass tubes with different lengths can be met, and the adaptability is improved.

The utility model discloses a cold-rolled tube drawing head forming device, which belongs to the technical field of cold-rolled tubes and comprises a processing box, a first die arranged in the processing box, a movable second die arranged at one end of the first die, and a transverse moving block arranged at the bottom of the second die. And a moving mechanism used for moving the transverse moving block is arranged at the bottom end in the processing box, so that after the forming process, the first mold and the second mold can be easily separated, internal materials can be conveniently discharged, when the second mold and the first mold are assembled and the rectangular limiting block can be located in the U-shaped limiting block, an external pressurizing system is not needed, and the working efficiency is improved. The forming quality of materials between the first mold and the second mold can be guaranteed under the condition that external pressurization is not increased, and therefore the energy consumption and the operation cost of equipment are reduced.

The present invention discloses a light weight ball bearing with enhanced strength and cooling effect. The weight of the said ball bearing is reduced by drawing curved profiling / corrugation over the inner surface (201) of inner ring (200) and outer surface (101) of the outer ring (102) through bar / tube drawing process wherein a steel bar is converted into a hollow tube and subsequently cold drawn through a profiled die. The said technical modifications reduce the raw material / weight of outer ring by up to 22-24% and reduce the raw material / weight of the inner ring by up to 18-20%. The said profiled ball bearing has 10% increase in fatigue strength, 40% higher push / pull load capacity and 7% improvement in heat transfer efficiency, thus the said profiling enhances the strength and cooling effect of ball bearing along with weight reduction of the same.

The utility model provides quartz tube induction furnace tube drawing equipment and a graphite heating body thereof. The graphite heating body is of a cylindrical structure, a strip-shaped notch is formed in the side wall of the graphite heating body, the notch penetrates through the side wall of the graphite heating body, the width of the notch is 0.5 mm-1 mm, and the height of the notch is 50 mm-85 mm. According to the graphite heating body of the quartz tube induction furnace tube drawing equipment, the strip-shaped notches are formed in the side wall of the graphite heating body, so that vortex radiant heat of an induction coil is cut off, the precision of drawing a quartz liner tube can be improved, and distortion of ovality and curvature of the quartz liner tube can be avoided.

The invention discloses an automatic pipe grabbing device for vertical upright production of an assembled hollow wallboard, which comprises a case, a driving transmission shaft is vertically arranged in the middle of the case, the top end of the driving transmission shaft is connected with a driving motor, the bottom end of the driving transmission shaft is connected with a circular pipe grabbing disc, two L-shaped pipe grabbing hooks are fixed on the circular pipe grabbing disc, and the L-shaped pipe grabbing hooks are connected with the driving motor. The pipe grabbing hooks are L-shaped hooks, and the orientations of the transverse hook heads of the two L-shaped pipe grabbing hooks are opposite. According to the invention, during tube drawing of the assembled hollow wallboard in vertical upright molding production, manual work or manual assistance is not needed, the bonding surface of the pore-forming circular steel tube and the wallboard hollow hole concrete can be automatically loosened, and the tube drawing efficiency is high.

The utility model discloses a long conical quartz capillary tube drawing device which comprises a rod feeding assembly, a heating assembly, a traction assembly, a diameter measuring assembly and a cutting assembly, the conveying end of the rod feeding assembly directly faces one opening of the heating assembly, the traction assembly is arranged at the position of the other opening of the heating assembly, and the diameter measuring assembly is arranged at the position of the other opening of the heating assembly. The diameter measuring assembly and the cutting assembly are sequentially arranged at an outlet of the traction assembly, the quartz tube is driven by the traction assembly to move forwards, due to the fact that the quartz tube is in a heated state, the quartz tube is stretched by traction force to form a cone shape, and the stretched cone-shaped tube can be cooled and shaped after being separated from the heating assembly. And the subsequent quartz tube is driven to continuously stretch. The long conical quartz capillary tube drawing device provided by the utility model has the effect of directly drawing a quartz mother tube to form a conical capillary tube.

The invention belongs to the technical field of quartz tube preparation, and relates to a method for preparing a high-purity quartz tube by a continuous melting method and a preparation device. Loading and vacuumizing: forming a stable vacuum degree gradient from the deep layer of the quartz sand to the surface layer of the quartz sand; heating and melting the quartz sand by adopting a radio frequency plasma torch, and keeping the temperature gradient from the quartz sand surface layer to the quartz sand deep layer to be 1800 DEG C to 1300 DEG C of the quartz sand surface layer; injecting inert gas into the deep melting area of the quartz sand, and oscillating vacuum; drawing and forming the molten glass liquid from the deep melting area of the quartz sand; gradient vacuum and plasma flame heating are cooperated, vacuum gradient drives bubbles to directionally migrate, and the bubble density can be effectively reduced while pollution is reduced through efficient plasma heating; the integration of raw material feeding, melting and tube drawing can be realized, and the yield is improved; continuous and efficient production of quartz tubes is achieved, the production period is greatly shortened, and the production efficiency is improved.

This utility model discloses a composite heat exchange tube and its production equipment, including: a substrate pretreatment device, an inner and outer tube insertion device, a filler layer coating device, and a composite tube drawing device. The inner and outer tube insertion device inserts the inner tube into the outer tube. The filler layer coating device is located in the middle of the inner and outer tube insertion device. During the insertion process, the filler layer coating device coats the outer surface of the inner tube. The outlet of the inner and outer tube insertion device is equipped with a composite tube drawing device for drawing the inserted heat exchange tube. The composite heat exchange tube proposed in this utility model solves the problems of high cost, short lifespan, and easy corrosion of existing stainless steel heat exchange tubes through innovative structural design and process optimization.

The utility model provides a slideway protection structure of a tube drawing device, which is characterized in that a slideway is connected with an output port of the tube drawing device, the slideway protection structure comprises an inclined bottom plate and vertical plates arranged on two sides of the bottom plate, and the slideway protection structure comprises a protection shell used for covering the upper part of an outlet of the slideway, the connecting plate is arranged on vertical plates on the two sides, the top end of the connecting plate is higher than the vertical plates, and the two sides of the protective plate are connected with the top end of the connecting plate. By arranging the protective shell, the outlet of the slide way can be covered, so that the empty bobbins are effectively prevented from flying out of the slide way in the sliding process and cannot normally enter a bobbin trolley below, in addition, by arranging the blocking plate with the top end rotationally arranged on the protective shell, the empty bobbins sliding out of the slide way can be blocked, and the empty bobbins are prevented from falling off. The empty bobbins are prevented from continuously falling in an accelerated mode, the speed of the empty bobbins sliding into the bobbin trolley is reduced, and therefore the situation that the empty bobbins are damaged due to the fact that impact force is large when the empty bobbins slide into the bobbin trolley is avoided.

The utility model relates to the technical field of plastic pipe body forming, in particular to a pipe drawing machine with a guide mechanism. A tube drawing machine with a guide mechanism comprises a machine table; the extruder body is arranged on the machine table; and the cooling assembly is arranged on one side of the extruder body and is used for cooling the extruded and molded plastic pipe body. The device has the beneficial effects that a plurality of guide pieces capable of quickly adjusting the positions are designed on the tube drawing part after the tube body is extruded and molded by the extruder, and the guide wheel is fixed at any position on the bearing plate through magnetic attraction by combining the effect that the metal column and the guide wheel are flexibly fixed by the magnetizer; the traction path of the plastic pipe body can be rapidly adjusted according to actual production requirements, the traction direction is changed from a fixed mode to an adjustable mode, the adjusting complexity of a traditional steering device is reduced, and the dynamic adjusting capacity of a production line is greatly improved.

The application belongs to metal drawing forming device, specifically a kind of pulse current assisted metal pipe drawing forming device, including base, fixed on the drawing frame of base, install the electric push cylinder in drawing frame one end, with the connecting head of electric push cylinder telescopic end connection, with the clamp for clamping pipe blank connected with connecting head, install the drawing die in drawing frame front end, fixed in the core rod fixed platform core rod, set up in the core rod rear end core rod connecting part, seal cover and with the gas cylinder that communicates with seal cover, and current output device, control console;Device is equipped with first loop and second loop, first loop is used to test current output, and second loop is used for pulse current output;The one end of pipe blank is provided with electrically conductive sleeve, and the electrically conductive sleeve is fixedly arranged on the core rod connecting part, the resistance of test current measurement loop is measured, and the preset current pulse output is corresponded, so that the equipment can independently switch pulse current parameter.

The invention discloses a high-performance stainless steel pipe centrifugal casting forming process, which utilizes a medium-frequency induction melting process to realize rapid heating and reduce the burnout rate of element content in raw materials so as to easily control components, and is combined with AOD (Argon Oxygen Decarburization) refining to carry out matched treatment. Refining treatment of decarburization, chromium protection, desulfurization, degassing and inclusion removal is performed in combination with Ar-Omixed gas, so that ultrahigh-purity molten steel is provided; the centrifugal casting procedure is utilized, the rotating speed is optimized, the front preheating and the built-in coating are utilized, the surface quality is ensured, chilling can be slowed down, the rotating speed is optimized, and the centrifugal force is ensured, so that a compact casting is obtained; the casting temperature is optimized, the fluidity can be considered, and solidification shrinkage can be reduced; a solidification cooling curve is optimized, the tube drawing effect is improved, and the casting quality is ensured.

The utility model relates to the technical field of drilling equipment, and discloses a green exploration drilling machine pipe drawing device which comprises a mounting frame, a first mounting plate, a clamp holder, a first telescopic rod and a second mounting plate. The mounting frame is fixedly connected to the end part of the feeding beam; the first mounting plate is slidably connected to one side of the mounting frame; the second mounting plate is fixedly connected to the mounting frame and located on the same side as the first mounting plate. The number of the first telescopic rods is multiple. The fixed end of the first telescopic rod is connected to the second mounting plate, and the movable end is connected to the first mounting plate; a first passing opening for a drill rod to pass through is formed in the middle of the first mounting plate in a penetrating manner, a second passing opening for the drill rod to pass through is formed in the middle of the second mounting plate in a penetrating manner, and the first passing opening is opposite to the second passing opening; the first mounting plate and the second mounting plate are each provided with a plurality of clamping devices used for clamping drill rods. According to the technical scheme provided by the utility model, the operation is simple, the integration level is high, and the drill rod which is stuck can be conveniently taken out.

The invention relates to the technical field of copper pipe forming, in particular to a surface coating quality detection system special for a copper pipe drawing die, which comprises a bottom base, a drawing die body, a detection integration part and a clamping tool, the clamping tool is used for clamping a drawing die body; a rotary driving part is arranged at the bottom of the clamping tool; an axial displacement module is arranged at the bottom of the detection integration part; the detection integration part comprises a test core rod; the diameter of the test core rod is matched with that of a sizing belt of the drawing die body; the outer side of the testing core rod is sleeved with a conical reducing head, and the conical reducing head is matched with the working conical area of the drawing die body; an inner penetrating eddy current probe is arranged at the head end of the testing core rod, one end of the testing core rod is fixedly connected with a fixing base, and a fixing plate is arranged at one end of the fixing base.

The invention provides a high-precision quartz tube preparation device which comprises a heating furnace, a rotating cylinder, a heating body and an air seal mechanism, the rotating cylinder is rotationally connected with a lower middle plate at the bottom of the heating furnace through a driving assembly, and the heating body is fixedly connected with the rotating cylinder; the air sealing mechanism is used for preventing external air from entering the heating furnace and comprises an air sealing seat, the air sealing seat is rotationally connected with a rotating cylinder, a first annular air sealing channel is formed in the air sealing seat, a second annular air sealing channel communicated with the first air sealing channel is formed in the rotating cylinder, and an air inlet is formed in the outer side of the first air sealing channel. The first air seal channel is arranged obliquely upwards in the air flowing direction, the side, away from the first air seal channel, of the second air seal channel is an air outlet end, and the second air seal channel is arranged obliquely downwards in the air flowing direction. The quartz tube drawing device is simple in overall structure and convenient to implement and operate, the heating body rotates for heating in the tube drawing process, uniform heating in all directions is guaranteed, abnormal conditions such as wall deviation and bending of quartz tubes are improved, and the forming quality is improved.

The invention discloses a pipe drawing and welding forming integrated manufacturing process for a plastic bucket. The process comprises the following steps that S1, a pipe drawing blank is prepared, specifically, a continuous plastic pipe is extruded through pipe drawing equipment; s2, a fixed-length cutting process: conveying the continuous plastic pipe extruded by the pipe drawing equipment to cutting equipment; s3, workpiece positioning and clamping are conducted, specifically, the cut barrel body blank, a preset base and a barrel cover are transferred to welding equipment; s4, inner side support arrangement; and S5, heating welding forming: passing through a heating structure of welding equipment. The problems that a traditional blow molding process is low in efficiency, uneven in barrel body wall thickness, high in mold cost, difficult in model changing and high in material loss and energy consumption are solved; through the modes of extrusion molding, fixed-length cutting and hot melting welding, efficient continuous production is achieved, it is guaranteed that the wall thickness of the barrel body is uniform, the structural strength is stable, no complex mold is needed, production of products of various specifications can be rapidly adapted, the production cost is remarkably reduced, and the device is especially suitable for large-size containers.

The application discloses a micro-tube drawing forming calculation method and system based on finite element analysis and relates to the technical field of metal processing. The method comprises the following steps: obtaining micro-tube parameters and drawing die parameters, establishing a geometric model based on the micro-tube parameters and the drawing die; selecting a constitutive model suitable for material deformation to determine material properties, and combining the geometric model to divide a finite element grid; setting constraint conditions for the grid, determining grid data, and determining fatigue points based on the grid data; determining fatigue point load upper and lower limits based on the fatigue points and the grid data corresponding to the fatigue points; and determining drawing force based on the fatigue point load upper and lower limits. The application realizes high-precision prediction of fatigue points in the micro-tube drawing process, can reduce costs, ensures controllable forming quality, and improves the yield.

1. Name of the product in this design: Flexible tube drawing lamp. 2. Purpose of this design: for lighting. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other situations requiring explanation are illustrated in the diagram: Part A of the changing state diagram is a flexible tube that can be bent and reshaped at will.

The invention discloses a filter stick receiver cleaning control system and a control method thereof. The filter stick receiver cleaning control system comprises a filter stick detection module, a filter stick interception module, a tube drawing module and a control module. The filter stick detection module comprises a glass tube, and a filter stick is located in the glass tube; the filter stick detection module is electrically connected with the control module and is used for detecting a blockage signal of the filter stick and sending the blockage signal to the control module; the control module is further electrically connected with the filter stick intercepting module and used for generating a filter stick cut-off control signal according to the blocking signal and sending the filter stick cut-off control signal to the filter stick intercepting module so as to control the filter stick intercepting module to intercept the filter stick; the control module is further electrically connected with the tube drawing module and used for outputting a filter stick discharging signal to the tube drawing module after the filter stick cut-off control signal is sent to the filter stick intercepting module so as to control the tube drawing module to discharge the filter sticks, then the filter sticks are discharged when the filter sticks are blocked, cleaning of the filter stick receiver is completed, and automatic dredging is achieved.

The invention discloses a high-frequency vibration tube drawing bench and a tube drawing method.The high-frequency vibration tube drawing bench comprises a vibrator, a clamping mechanism, a tube drawing mechanism and a vibration reduction mechanism, the vibrator can be used for being connected with a sleeve, and the clamping mechanism and the tube drawing mechanism are provided with through holes allowing the sleeve to penetrate through. According to the clamping mechanism, due to the fact that the clamping mechanism is provided with the first inclined face and the second inclined face, the moving accuracy of the clamping block can be effectively guaranteed, the clamping block can reliably move the sleeve which is effectively clamped in the through hole through work of the first oil cylinder, and the clamping mechanism can apply force to the sleeve through the clamping block so that it can be guaranteed that the sleeve can be effectively pulled out. In addition, a vibrator is further arranged, the vibrator can apply high-frequency vibration to the casing pipe during pipe pulling, the bonding degree of the casing pipe and concrete in the casing pipe is reduced, the pulling-out difficulty of the casing pipe relative to delayed coagulation soil is effectively reduced, the pipe pulling-out efficiency is improved, and a vibration reduction mechanism is further arranged so that vibration transmitted to the pipe pulling mechanism can be effectively reduced.

The invention provides a stirrer rotating speed control system for glass tube forming equipment, and the glass tube forming equipment comprises a glass melting system for melting a glass raw material into a glass melt and a tube drawing system, and a glass melt is melted in the glass melting system, is uniformly stirred, falls onto a rotary mandrel in the tube drawing system through a blanking port in the glass melting system, and is cooled to form a glass tube. The stirrer rotating speed control system comprises an imaging device and a control device, wherein the imaging device is used for imaging a glass melt flow at a blanking port of a blanking groove and a glass melt flow on a mandrel; wherein the stirrer rotating speed control system is used for comparing and analyzing the formed image, judging whether the rotating speed of the stirrer needs to be adjusted or not based on an analysis result, and adjusting the rotating speed of the stirrer based on the judgment.

A rotary drawing mechanism for a seamless thin-walled tube comprises a driving assembly used for driving a tube drawing assembly to move, the tube drawing assembly used for fixing and drawing a pierced billet, and a foreground used for installing the tube drawing assembly and the driving assembly which are arranged in sequence. The driving assembly comprises a chain wheel motor, a chain wheel coupling, a chain wheel speed reducer, a chain wheel shaft, a chain wheel and a sheet chain; the tube drawing assembly comprises a torsion motor, a torsion speed reducer, a torsion coupler, an intermediate shaft, a hollow torsion shaft, a base mounting trolley, a concave box beam, a gear shaping mechanism and an oil cylinder; the hollow torsion shaft penetrates through the rotary rolling mechanism along the machining center line to be connected with the pierced billet, the driving assembly provides circumferential rotation and axial drawing composite motion for the pierced billet in the rotary rolling machining process, the pierced billet deforms in the circumferential direction and the radial direction, the deformation speed is controllable, the wall thickness is uniform, and the machining process is short.

The utility model belongs to the technical field of glass fiber yarn roll production and processing, and particularly relates to full-automatic paper tube drawing and stacking and waste yarn winding and removing equipment which comprises an integral prying frame, a telescopic clamping mechanism, a paper tube sleeving mechanism, a platform weighing mechanism, a yarn roll positioning device and a paper tube drawing and winding mechanism. Wherein the integral prying frame comprises a lower-layer frame, stand column assemblies arranged at the top of the lower-layer frame, a metal plate assembly arranged between the stand column assemblies and an upper-layer frame arranged at the tops of the stand column assemblies; the telescopic clamping mechanism is located in the overall prying frame and comprises a multi-speed telescopic mechanism, a lifting mechanism arranged at the bottom of the multi-speed telescopic mechanism and synchronous clamping mechanisms arranged on the two sides of the bottom of the lifting mechanism. The device is reasonable in structure, full-automatic production operation of a paper extraction cylinder and waste yarn stripping procedure is achieved in the production process of packaging of glass fiber yarn roll finished products, the device reliability is high, the labor intensity of workshop workers is greatly reduced, and the purposes of reducing staff and improving efficiency are achieved.

The invention discloses round steel for a 1650MPa-grade hollow stabilizer bar, which contains Fe and inevitable impurities, and further contains the following chemical elements in percentage by mass: 0.33 to 0.41 percent of C, 0.20 to 0.30 percent of Si, 1.30 to 1.50 percent of Mn, 0.15 to 0.35 percent of Cr, 0.025 to 0.035 percent of Al, 0.03 to 0.04 percent of Ti, 0.002 to 0.003 percent of B and 0.02 to 0.10 percent of V. And does not contain Mo. The invention further discloses a hollow stabilizer bar which is made of the round steel for the stabilizer bar. The invention also discloses a manufacturing method of the round steel for the hollow stabilizer bar and the hollow stabilizer bar. The manufacturing method comprises the following steps: smelting and casting; heating is performed; forging or rolling; performing pipe penetration and cold drawing; normalizing is conducted; and quenching and tempering.