232results about How to "Guaranteed placement" patented technology

The invention relates to the minimally invasive therapy technology and a minimally invasive therapy instrument, in particular to a method and instrument for forming a targeted balloon of a living body catheter cavity, namely a minimally invasive surgery method and instrument for carrying out targeted rear urethra balloon dilatation forming on the rear narrowed urethra of the male, wherein the rear narrowed urethra might be caused by the BPH, a tumor, an inflammation and the like. The targeted dilatation balloon dilatation catheter is provided with at least one targeted dilatation balloon, wherein one cavity is used for draining or conveying body liquid or gases and another cavity is used for filling a targeted catheter cavity dilatation balloon. At least a row of protrusions for targeted dilatation forming or a protrusion for targeted dilatation forming is arranged on the surface of the targeted dilatation balloon in the direction of the long axis. The protrusions or the protrusion for targeted dilatation forming aligns with a zone or a part, needing targeted dilatation forming, of the catheter cavity and expands in a certain manner, at a certain speed and under the certain pressure to form the balloon. Thus, the targeted dilatation forming protrusion or protrusions form selective partial high intensity of pressure and high shearing force on the targeted forming zone of the catheter cavity and targeted dilatation forming of the catheter cavity is achieved.

The invention discloses a calibration device for an inclination angle sensor, which is characterized in that a dividing head is arranged on an adjustable horizontal base; a three-jaw chuck fixedly connected with the lateral part of the dividing head is used for clamping a sensor fixed frame; an angular displacement platform capable of adjusting a horizontal inclination angle is mounted on the sensor fixed frame; a to-be-calibrated sensor is mounted on the angular displacement platform through a sensor clamp; the dividing head adopts a rotatable component with a horizontal rotating shaft; the end of the horizontal rotating shaft of the dividing shaft is fixedly connected with a rotating handle; the dividing head is used for measuring a rotating angle of the sensor fixed frame by means of an angle vernier coded disc and a dividing head angle coded disc arranged on the horizontal rotating shaft of the dividing head; and the rotating shaft of the sensor fixed frame and the rotating shaft of the dividing head are arranged at 90 degrees in a horizontal plane. The invention has the advantages of simple structure, high calibration accuracy and convenient use.

The invention relates to a wireless remote electrocardio detecting system which comprises an elastic belt, external data treatment equipment carrying electrocardio analysis software, and a remote server carrying electrocardio data base, wherein a plurality of electrodes and a main-control module are mounted on the elastic belt; and the main-control module comprises an electrocardiosignal amplifying circuit, an analog-digital conversion circuit and a Bluetooth circuit. Electrocardio data collected by the elastic belt is sent to the external data treatment equipment through Bluetooth in a wireless manner to be analyzed, displayed and stored, and then is uploaded to the remote server in a wireless manner; the remote server runs an electrocardio data base and receives electrocardio data uploaded by a large number of users, so as to achieve the functions of storage, statistics analysis and on-line monitoring of the electrocardio data. According to the invention, the elastic belt is worn conveniently; electrocardiosignals can be detected without patch electrodes or coating of conductive paste; the electrocardio data is transmitted in a wireless manner, so that the movement of a human body is not restricted at all; and the invention is applicable to remote electrocardio detection in a motion state.

The invention discloses an unmanned aerial vehicle stringing system. The system comprises a stringing unmanned aerial vehicle, an aerial photography unmanned aerial vehicle, a guide rope, a paying-offreel and a paying-off tackle, wherein the paying-off tackle is of a side wire feeding type; the stringing unmanned aerial vehicle serves as a flight platform to carry out wire pulling; a guide rope fixing device is arranged on the stringing unmanned aerial vehicle; the guide rope is connected to the guide rope fixing device; a controller and a wireless signal transceiver are arranged on the stringing unmanned aerial vehicle; the controllers controls all the unmanned aerial vehicles; the wireless signal transceivers receive remote signals; the controllers control the unmanned aerial vehicles to act for driving a traction rope to act; a marker is arranged on the guide rope and used for marking the position of the guide rope entering the paying-off tackle; a monitoring device is arranged onthe aerial photography unmanned aerial vehicle; and the paying-off tackle comprises a frame, pulleys, a guide rope guide rail and a centering valve system. The paying-off tackle adopting the structureis reliable in installation and convenient to disassemble; the manpower is removed in a paying-off link; the operation is carried out in cooperation with the unmanned aerial vehicles, so that the time and labor are saved, and the construction efficiency is improved; and therefore, the system is suitable for current electric power industry.

The embodiment of the invention discloses an automatic gypsum board defect monitoring system. The system comprises a conveying line used for conveying a gypsum board output by a drying machine to a next stacking station. A grating scanning device for scanning and identifying the surface of the gypsum board standing laterally is arranged between the drying machine and the stacking station, a boardoverturning and connecting mechanism and a lateral pushing mechanism are sequentially arranged between the grating scanning device and the stacking station, and the lateral pushing mechanism pushes adetected defective gypsum board away from the conveying line to be collected in a centralized mode. A monitoring method comprises a step of dividing a conveying path into a defect monitoring area, a turning board protection area and a waste removal area, a step of performing defect monitoring on two parallel surfaces of the gypsum board standing laterally conveyed to the defect monitoring area, astep of horizontally overturning and converying the gypsum board standing laterally conveyed to the turning board protection area, a step of pushes the detected defective gypsum board away from the conveying line according to a side push waste removal instruction, and a step of conveying a detected gypsum board without defects to the stacking station along the conveying line. According to the scheme, the secondary damage probability of the gypsum board caused by a board overturning mechanism can be effectively reduced.

The invention discloses a special water dispenser for blind persons, belonging to the technical field of water dispensers. The special water dispenser comprises a water dispenser body, a bucket and a power line; the water dispenser body is provided with a hot-water button, a cold-water button, a leakage-proof water tank and a power switch; the special water dispenser further comprises a voice alarming system and a controller which are both arranged on the water dispenser body, a round tank arranged on the leakage-proof water tank, and a first infrared distance measurement sensor and a second infrared distance measurement sensor respectively arranged close to water outlets of the hot-water button and the cold-water button; the alarming system, the first infrared distance measurement sensor, the second infrared distance measurement sensor and the power switch are electrically connected. The special water dispenser has the following beneficial effects that the situations / situation of overflowing and / or scalding are / is avoided, the safety performance is high; a user can distinguish the hot-water button from the cold-water button conveniently; the situation of water flowing out of a cup is avoided with the adoption of the round tank; and the special water dispenser has a simple structure and is convenient to use.

The invention provides a BG42 stainless steel medical clamp. The BG42 stainless steel medical clamp comprises a clamp body with a clamp head, and the clamp head is provided with a step. The BG42 stainless steel medical clamp is characterized in that BG42 stainless steel is welded to the step through paste nickel-based brazing alloy; the clamp body is made of quenched low-carbon stainless steel materials with HRC more than 30; the BG42 stainless steel is formed by mixing C, Si, Mn, Cr, Mo and V and comprises, by mass, 1.0-1.2% of C, 0.2-0.4% of Si, 0.4-0.6% of Mn, 14-15% of Cr, 3-5% of Mo and 1.1-1.3% of V; the paste nickel-based brazing alloy is formed by mixing Cr, B, Si, Fe, C, P and Ni and comprises, by mass, 6-8% of Cr, 2.75-3.5% of B, 4-5% of Si, 2.5-3.5% of Fe, 0.05-0.07% of C, 0.01-0.03% of P, and the balance Ni.

The invention relates to a manufacturing method of an aero-engine composite material fan blade metal stiffened edge. The manufacturing method of the aero-engine composite material fan blade metal stiffened edge mainly comprises the steps that diffusion bonding is carried out on a prefabricated piece through a sealing structure to obtain a hollow structure, and finally, the metal stiffened edge isisolated in an edge trimming separation mode. A core model is adopted to support a cavity in the process of diffusion bonding, and the forming precision and quality of the inner cavity surface of themetal stiffened edge are ensured. Compared with the prior art, the problems of low material utilization, difficult machining and long production period caused by integral cutting machining of the metal stiffened edge are solved, and the defects of nonuniform thickness distribution and low forming precision of an inner cavity small circular bead caused by a superplastic forming / diffusion bonding method are overcome.

The invention discloses a special platform for manufacturing cable intermediate joints, and relates to the field of cable accessory manufacturing tools. The special platform comprises a left connecting base, a right connecting base and a working frame, wherein the left connecting base is used for clamping left cable joints, and the right connecting base is used for clamping right cable joints; the left connecting base is connected to the left end of the working frame in a sliding manner; the right connecting base is fixedly connected to the right end of the working frame, and the axis of the left connecting base is the same as that of the right connecting base; a substrate is fixed in the axial direction of the working frame; the substrate is movably connected with a lead screw in a penetrating manner in the axial direction; the left connecting base is in connected with the lead screw in the sliding manner through a thread; a first gear is arranged at the left end of the lead screw, and a second gear engaged with the first gear is arranged on the working frame; and the second gear is connected with a handle. The special platform is beneficial for safe and stable operation of the cables, cable accident potentials caused by the fact that the joints and accessories are contaminated by soil in the manufacturing process of the cable intermediate joints are avoided, meanwhile the labor cost is reduced, and the labor efficiency is improved.

The invention discloses a soil detecting and sampling device for garden maintenance, and relates to the field of garden maintenance. For the problem that, in the prior art, in the process that a conventional sampler is inserted into soil, upper-layer soil inevitably enters the sampler to influence the accuracy of the sampled soil, the following scheme is proposed: the device comprises a fixed frame and a sampling assembly, the sampling assembly is connected to the fixed frame, the fixed frame comprises a fixed base, two sets of supports and rotating motors, the two sets of supports are fixed to the two sides of the upper surface of the fixed base respectively, the rotating motors are fixed to the tops of the supports respectively, and rotating screw shafts are connected to output shafts ofthe rotating motors. The soil detecting and sampling device is novel in structure, can sample soil of different depths at a time, effectively prevents upper-layer soil from entering the sampling boxin the process that a sampling barrel is inserted into the soil, ensures that the sampled soil is in a relatively sealed cavity, avoids mutual mixing of the soil, and ensures the sampling accuracy.

The invention discloses steel rope processing equipment. Firstly, a steel rope is automatically conveyed by a steel rope feeding device; the front end of the steel rope is clamped by a front-end clamping rotary mechanism, and is rotated to an end part processing punch so as to be in butt joint and riveted with a screw; then, the steel rope is straightened by a steel rope length computing auxiliary mechanism, the length of the steel rope is computed by a counter, the steel rope feeding device and the steel rope length computing auxiliary mechanism stop when the length of the steel rope reaches designed length, and a steel rope cut-off device correspondingly cuts off the steel rope; the tail end of the steel rope is clamped by a tail-end clamping translation mechanism, and is moved to a processing punch on the other end part for being in butt joint and riveted with the screw; the middle part of the steel rope is clamped by a middle butt-joint mechanism, and is moved to a connecting plate processing punch so as to be in butt joint and riveted with a connecting plate, so that the finished product processing is completed; and in the whole processing process, only one person is required to operate and control, so that automatic production is realized, labor cost is reduced, the production efficiency is improved and the yield is increased, and therefore, the steel rope processing equipment is suitable for large-scale processing production.

The utility model relates to a pay-off pulley for an unmanned aerial vehicle (UAV) wire mounting system, which comprises a frame body, a guide rope guide rail and a plurality of pulleys. The circumferential surface of each pulley is provided with an arc-shaped groove and has a common support shaft to form a pulley set, and two ends of the support shaft are respectively connected to the frame body. The frame body comprises a first side portion and a second side portion, wherein the first side portion and the second side portion are located on both sides of the axial direction of the pulley block, respectively; An opening is provided on the second side portion, and the opening divides the second side portion into two parts, namely a first part of the second side portion and a second part ofthe second side portion, wherein the first part of the second side portion is positioned above the opening and the second part of the second side portion is positioned below the opening, and the first part of the second side portion and the second part of the second side portion are connected by a snap connection assembly. The pay-off pulley with the structure is reliable in installation and convenient in disassembly. The pay-off pulley subtracts the manpower, and cooperates with the unmanned aerial vehicle to save time and labor, improves the construction efficiency, and is suitable for thecurrent electric power industry.

The invention discloses an integrated safe driving device. The integrated safe driving device comprises a driving motor, a speed reduction box, a main driving shaft and a bearing seat which are pre-integrated and in sequential transmission fit, wherein the bearing seat is arranged at the end, far away from the speed reduction box, of the main driving shaft, installation positions for being fixed to a truss are arranged at the bottoms of the speed reduction box and the bearing box, and an output gear of the speed reduction box and the main driving shaft are positioned through tightly matched conical surfaces. The invention further provides an installation method of the integrated safe driving device. The driving motor, the speed reduction box, the main driving shaft and the bearing seat are pre-integrated, installation of the driving device is facilitated, installation difficulty is reduced, installation accuracy is improved through matching of the conical surfaces, installation efficiency is guaranteed, and products meet national standards and have large market prospects.

The invention discloses a bottom sitting type cylindrical deep off-lying sea pasture movable management platform, and relates to the technical field of marine platforms. The bottom sitting type cylindrical deep off-lying sea pasture movable management platform comprises a deck and an anchoring and mooring assembly, wherein an upper part platform is arranged on the deck, a cabin body for adjustingand controlling the spacing between the deck and a water surface is connected to the lower part of the deck through vertical columns which are uniformly distributed, and supporting rods are connectedbetween the vertical columns in a stagger manner; the anchoring and mooring assembly comprises anchor ropes arranged on the periphery of the deck, wherein each anchor rope is connected with a corresponding first anchoring and mooring member arranged on a seabed; scouring prevention plates are arranged on the outer side of the cabin body; the bottom ends of the scouring prevention plates are levelwith the bottom surface of the cabin body, and an inclined angle is formed in the scouring prevention plates and the side surface of the cabin body; and skidproof assemblies are uniformly distributedon the bottom surface of the cabin body. According to the bottom sitting type cylindrical deep off-lying sea pasture movable management platform disclosed by the invention, shore breeding is further developed to deep off lying sea breeding, so that the ecological environment bearing capacity of shore and land is alleviated, the platform is stable to ascend and descend, and in the using process, the platform is low in influence by waves.

The invention discloses machining equipment used for riveting and fixing the ends of steel ropes and threaded rods. The machining equipment comprises an end machining punch press. A threaded rod feeding machine is arranged on the side of the end machining punch press and used for conveying the threaded rods to a workbench of the end machining punch press automatically. A positioning seat is arranged on the workbench of the end machining punch press and used for positioning in the butt joint and riveting process of the threaded rods and the end s of the steel ropes. The threaded rods output from the threaded rod feeding machine are clamped automatically and moved onto the positioning seat through a butt joint mechanism arranged on the end machining punch press so that the threaded rods can be in butt joint with the ends of the steel ropes. Finally, the ends of the steel ropes and the threaded rods are pivoted and fixedly connected after being in butt joint by controlling the end machining punch press. In the whole process, the threaded rods are fed, made to be in butt joint with the ends of the steel ropes automatically, and automatically controlled to be pivoted and fixedly connected, automatic machining and production are achieved, the labor cost is reduced, the production efficiency is improved, the yield is increased, the uniform quality of finished products is effectively guaranteed, and the machining equipment is suitable for batch machining and production.

A work fixture for sand blasting and spraying of cylinder liners comprises a base, a connecting rod and a tightly-pressing disk; one end of the connecting rod is fixedly connected with one end face of the base, the other end of the connecting rod is in threaded connection with on end face of the tightly-pressing disk, and the connecting rod is provided with a group of limiting disks in a penetration mode; one side of the base and one same-direction side of each limiting disk are each provided with a cylindrical protective barrel, the base and each limiting disk are each provided with a circular annular positioning groove located on the inner side of a limiting ring, and the other side of the limiting disk and one same-direction side of the tightly-pressing disk are each provided with a circular positioning disk; the central lines of the connecting rod, the protective barrels, the positioning grooves and the positioning disks coincide. The work fixture can stabilize the product quality, improves the production efficiency, reduces the labor intensity of workers, is easy for workers to operate, and has no installation error, so as to ensure that a protection area of a cylinder is not sandblasted and sprayed.

The guide rope side thread feed type pay-off pulley comprises a link plate, a boom, a frame body, a pulley, a guide rope thread feed system and a centering valve system, wherein the guide rope threadfeed system is fixed by the frame body and the boom. The pulley is arranged on the frame body, and the circumferential surface of the pulley is provided with an arc-shaped groove for accommodating theconductor. The lower end of the frame body is provided with a frame body support. The frame body is connected to a connecting plate through a hanging rod, and the hanging rod and the connecting plateare rotatably connected; Setting thread clearance at the guide rope inlet system. The number of pulleys installed on the brackets shall be odd and the pulleys shall be arranged coaxially between thepulleys. The frame body is connected with a connecting plate through a pin, so that the lead is convenient to be disassembled after the lead is installed. The pay-off pulley with the structure is reliable in installation and convenient in disassembly. The pay-off link subtracts the manpower, and cooperates with the unmanned aerial vehicle so as to save time and labor, improve the construction efficiency, and is suitable for the current electric power industry.

The invention discloses a V-shaped funnel device for measuring concrete flowability. The V-shaped funnel device comprises a V-shaped funnel, brackets, a laser distance-measuring timer, a fixed frame,and a containing container, wherein the upper part of the V-shaped funnel is equipped with an opening, and the plane of the opening is perpendicular to the symmetrical axis of the funnel; the openingis downwards reduced in the form of V; the tail part of the V-shaped funnel is in the form of a hollow rectangle; the bottom of the rectangle is equipped with a watertight bottom cover capable of being quickly opened, and the rectangle is connected with the watertight bottom cover through a shaft core and a torsion spring; the brackets are in good contact fit to the side surface of the V-shaped funnel, so that the upper opening of the V-shaped funnel is in the horizontal state; the laser distance-measuring timer is fixedly arranged on the brackets through the fixed frame, and a working mode can be controlled through a button; and height of a concrete middle point in the containing container and complete flow-out time of the concrete in the V-shaped funnel are accurately measured. The laserdistance-measuring timer can eliminate manual timing errors, and precisely measures the height of the concrete middle point in the containing container and complete flow-out time of the concrete in the V-shaped funnel, so that flowability of concrete is accurately judged.

The invention provides a self-protection type intelligent goods shelf for storage. The self-protection type intelligent goods shelf comprises a goods shelf body, a pushing mechanism, a clamping mechanism, a second reset mechanism, a first reset mechanism, a sliding mechanism, a connecting mechanism, a disconnecting mechanism, a safety mechanism, an indicating mechanism, a lifting machine, a gravity induction mechanism, a protection mechanism and a telescopic mechanism. The goods shelf body comprises storage plates, each storage plate comprises a first sliding face which is obliquely arranged, the gravity induction mechanism used for monitoring the weights of goods placed on the storage plates is arranged on the lower side walls of the storage plates, the indicating mechanism enabling the goods placing conditions to be observed conveniently is arranged on the storage plates, the lifting machine comprises a U-shaped lifting table, a controller is arranged on the side portion of the lifting machine, and a containing plate is arranged on the side wall of the lifting table. According to the self-protection type intelligent goods shelf for storage, goods can be conveniently placed, potential safety hazards caused by overweight of the goods on the goods shelf can be avoided, and use is safer.

The invention discloses an improved non-woven fabric dyeing production line. The improved non-woven fabric dyeing production line comprises an unreeling device, a dye vat, a transition area, a washing vat, a rolling device, an oven, a reeling device, multiple guide rollers, mesh belts and a frame body. The unreeling device, the dye vat, the transition area, the washing vat, the rolling device, the oven and the reeling device are sequentially arranged from front to back, and the dye vat, the transition area and the washing vat are arranged on the frame body; the guide rollers are arranged in the dye vat, the transition area and the washing vat and on the frame body, and the mesh belts are tensioned on the guide rollers; the unreeling device comprises a seat body, multiple rollers, two rails, an unreeling shaft, two guide seats, a sliding seat, a connecting seat, a regulating screw, a regulating disc, first bearings, second bearings, a regulating pressure applying device and two supporting bodies. Compared with the prior art, fixation and detachment can be convenient, fixing reliability is high, working efficiency is improved, product quality is improved, and the reeling degree of density of non-woven fabric is good.

The invention discloses a household functional electric sofa. A cushion framework is slidably arranged on a base, a turnover leg support is mounted at the front end of the cushion framework, a chair back is rotatably mounted at the rear end of the cushion framework, a driving mechanism is arranged on the base, firstly drives the turnover leg support to be unfolded after being started and then drives the cushion framework to slide on the base forwards after the turnover leg support is completely unfolded, a linkage component is arranged between the chair back and the cushion framework, and thechair back can be inclined backwards relative to the cushion framework. The electric sofa can be placed without leaning on a wall and further can provide various use modes such as reading and lying.

The invention discloses an ear-nose-throat clinical examination device. The ear-nose-throat clinical examination device comprises a frame, a rotary shaft is rotationally limited on the upper surface of the frame, the top of the rotary shaft is fixedly connected with a rotary plate, two symmetrical lateral plates are fixedly connected to the upper surface of the rotary plate, through holes are formed in the lateral sides of the lateral plates, and a transmission rod is rotationally limited on the lateral sides of the lateral plates through the through holes. The surface of the transmission rodis fixedly connected with a camera, the surface, close to the right end, on the transmission rod penetrates through the corresponding through hole and is fixedly connected with a gear, the rear side of the gear is meshed with a rack, and the bottom of the rack penetrates through the upper surface of the rotary plate and is movably connected with the rotary plate. Through the cooperation of the structures in use, the problems are solved that in practical use, turning of the camera is inconveniently adjusted, so that a doctor difficultly quickly adjusts the camera to a specified angle for observation, the time for the examination time is prolonged, discomfort is easily brought to a patient, inconvenience is easily brought to the patient, and the working efficiency is reduced.

The invention relates to a steel ball positioning device used for a space steel structure. The steel ball positioning device comprises a support. A positioning rod is arranged at the top end of the support, the top end coordinate of the positioning rod can be adjusted through the support, and the periphery of the positioning rod is provided with three positioning blocks which are distributed in an equilateral triangle mode; the positioning blocks are matched with screw rods in a threaded mode, the screw rods are connected with a triangular frame arranged on the support, and the positioning blocks can move along the rod shaft center lines of the screw rods; and the top ends of the screw rods are provided with tapered gears A which are engaged with tapered gears B arranged on the support. The steel ball positioning provided by the invention can improve steel ball installation precision and installation efficiency.

The invention discloses an automatic-release riveting machine. The automatic-release riveting machine comprises a base support and a rivet collecting device, wherein a conveyor belt is fixedly connected to the base support, a supporting column is fixedly connected to one side of the base support, arrangement fixing frames are fixedly connected to the support and arranged over the conveyor belt, a plurality of rivet arrangement devices are fixedly connected to the arrangement fixing frames, a conveying device is arranged on the rivet arrangement devices, one end of the rivet collecting device is fixedly connected to the supporting column, a positioning device is arranged on the rivet collecting device, and the bottom end of the conveying device extends to the positioning device; due to combined use of the rivet arrangement devices, the conveying device and the positioning device, rivets can be automatically picked up, conveyed and positioned, automatic production is achieved, it is guaranteed that the rivets can be automatically arranged and placed, production time is saved, workloads of workers are relieved, and production efficiency is improved.

The invention discloses a data prefetching method based on location awareness in an on-chip cache network. The data prefetching method based on location awareness in the on-chip cache network comprises the following steps: 1) after a processor is started, recording cache block information of data fetched into the on-chip cache network on the processor in the on-chip cache network by using a data location vector table; 2) when a processor core executes a prefetching instruction in a program, skipping to execute step 3); 3) searching the cache block information of target data of the prefetching instruction in the on-chip cache network from the data location vector table, prefetching the target data, then storing the target data in a cache block designated by the prefetching instruction, and updating the cache block information of the target data in the on-chip cache network. The data prefetching method based on location awareness in the on-chip cache network can realize prefetching of data in the on-chip cache network on the many-core processor, and has the advantages of simple realization principle, high prefetching accuracy and high flexibility.

The invention relates to the technical field of visual inspection, and discloses a visual inspection device for automobile parts. The visual inspection device comprises a back plate, the front surfaceof the back plate is fixedly connected with a central shaft, and the surface of the central shaft is movably connected with a rotating shaft. The front surface of the central shaft is fixedly connected with a bracket, the bottom of the bracket is movably connected with a transmission belt, the top of the transmission belt is movably connected with a bottom plate, the top of the bottom plate is movably connected with a turntable, and the top of the turntable is fixedly provided with a bottom camera recognition device. The visual inspection device for the automobile parts increases the detection range of the parts through the bottom camera recognition device, a side camera recognition device and a top camera recognition device, and the recognition accuracy is better, the detection efficiency is higher, a light tube and a light belt are used for lighting the inside of the detection device, a light reflector is used to increase light at the bottom of a product to provide illumination forthe detection device, and the detection and recognition efficiency are improved.

The invention provides a pre-forming die of an automobile engine exhaust system manifold and solves the problem that the existing forming dies are insufficient in workpiece compression. The pre-forming die is characterized in that a lower die structure comprise a pressing plate which is mounted on a lower fixing plate, a forming lower die is mounted in the pressing plate and connected with the lower fixing plate, an ejector pin is mounted in the lower fixing plate, the ejector pin vertically penetrates the lower fixing plate, a lower base plate and a lower die plate, and the lower portion of the ejector pin is connected with the guide rod of a nitrogen cylinder which is mounted on a mounting plate. By the pre-forming die, in-place pre-forming of workpieces through one-step punching is guaranteed.

The invention discloses an iron nail restoration device comprising a rack, a restoration die, clamp forceps, a pin shaft, a fixed seat, a discharging hopper, a hydraulic gap A, a hydraulic gap B, a pull rod and a magnet. The restoration die, the discharging hopper, the hydraulic gap A and the hydraulic gap B are fixedly arranged on the rack. The hydraulic gap B is used for closing or opening the clamp forceps by the pull rod. The clamp forceps are fixedly arranged on the fixed seat by the pin shaft. The fixed seat is fixedly arranged on the hydraulic gap A. A groove for placing an iron nail is formed in the restoration die, and the magnet is inlaid into the groove. Due to the adoption of the structure, a bent iron nail is placed in the groove of the restoration die, the pull rod is pulled by the hydraulic gap B to ensure that an iron nail head is clamped by the clamp forceps, the pull rod is pulled by the hydraulic gap A to ensure that the bent iron nail upwards straightly moves along the inside of the groove of the restoration die so as to be restored to be straight; and when the iron nail reaches above the discharging hopper, the clamp forceps are opened to make the iron nail falls out from the discharging hopper. The iron nail restoration device has the beneficial effects that the bent iron nail is restored to be straight, so that the construction cost is reduced, the efficiency is increased, and resources are saved; and meanwhile, the device is simple in structure and convenient to operate.