361results about "Magnetic bodies" patented technology

A disclosure relates to methods and apparatus for processing an elongated body for a medical instrument. In one arrangement, targeted processing is applied to each of one or more local portions of the elongated body to cause a change in a room temperature magnetic property of material in each local portion, thereby causing the one or more local portions to have different room temperature magnetic properties than other portions of the elongated body.

The magnetizing system comprises a tray, a positioning chuck, a tip cone piece and a magnetizing head, a magnetic induction unit is arranged in the magnetizing head, the rotor is driven by the positioning chuck to rotate, the tip cone piece abuts against the other end of the rotor, the system comprises a parameter initialization module, a magnetizing parameter database is loaded, and initial parameters are preset; the magnetizing simulation calculation module is used for obtaining pre-estimated parameters such as magnetizing time through finite element simulation based on the magnetic induction intensity; the magnetic uniformity detection module is used for monitoring and calculating the magnetizing uniformity in real time; and the parameter dynamic regulation and control module is used for regulating the rotating speed of the rotor according to the uniformity and regulating and controlling the magnetizing current through a temperature sensor and a mapping model. The problems that in the magnetizing process of an existing permanent magnet motor rotor, magnetizing uniformity is insufficient, a real-time monitoring and dynamic adjusting mechanism is lacked, and the magnetizing quality is unstable and positioning precision is poor due to the fact that the magnetizing quality is prone to being affected by temperature are solved.

The utility model belongs to the technical field of magnetizing equipment, and particularly discloses a multi-head automatic magnetizer which comprises a machine body, a rotating disc assembly, a lifting material platform assembly and a limiting assembly, a loading and unloading area and a magnetizing area are arranged above the machine body, the rotating disc assembly is arranged between the loading and unloading area and the magnetizing area, and the rotating disc assembly comprises a rotating disc body and a first driving motor. The first driving motor is fixed to the machine body, the rotating disc body is fixed to a driving shaft of the first driving motor, a plurality of grooves are evenly formed in the side edge of the rotating disc body, and a lifting material table assembly is arranged on the side edge of each groove. The workpieces loaded in the loading and unloading area are transferred to the magnetizing area to be magnetized through the rotating disc assembly; the lifting material table assembly comprises a telescopic motor, a fixing plate, a connecting rod and a containing table, the workpiece is fixed through the limiting assembly, then the telescopic motor is used for controlling the workpiece to move up and down, and the workpiece is controlled to be magnetized.

The application discloses a device and method for magnetizing a neodymium iron boron magnet, which comprises a magnetizer, a lamination conveying channel, a lamination mechanism and a lamination set sheet removing mechanism. The lamination set sheet removing mechanism comprises a visual detection system, at least two sheet removing plates and a driving mechanism. The visual detection system is arranged above the lamination conveying channel to identify whether there is a missing gasket between adjacent blank sheets in real time. At least two sheet removing plates with switchable postures are arranged. When an extra blank sheet is detected, a clutch transmission selectively connects the driving shaft with a corresponding number of sheet removing plates. The sheet removing plates are switched from an initial posture to a sheet removing posture, and the extra blank sheet is removed from the lamination conveying channel. The device realizes automatic identification and accurate removal of stacking defects, and solves the technical problems in the prior art, i.e., difficulty in separating after magnetization, influence on sheet separation efficiency and easy breakage of blank sheets due to the lack of gaskets between adjacent blank sheets.

This application provides a dynamic collaborative control method for the winding tension and turn spacing of enameled wire in demagnetizing coils. This method is designed for the winding of demagnetizing coils for display tubes. It achieves real-time coordination and linkage between tension and turn spacing throughout the winding process, ensuring that different tension stages correspond to the most suitable spacing distance. This guarantees that the entire coil is uniformly arranged and has a dense structure from beginning to end. This invention effectively solves the core problem of uneven turn spacing caused by tension fluctuations in precision winding, which in turn leads to magnetic field distribution distortion and decreased coil structural stability. It achieves full-link adaptive collaborative optimization of tension, spacing, material properties, and electromagnetic performance, ensuring high consistency and high stability winding quality.

The application discloses a mold capable of opening and closing a magnetic field, which comprises a lower magnetic conducting block, a permanent magnet arranged on the lower magnetic conducting block, and a non-magnetic conducting cavity assembly, wherein the cavity assembly is provided with a cavity penetrating from top to bottom; the permanent magnet is arranged around the cavity assembly; the lower magnetic conducting block is provided with a first magnetic conducting part close to the lower part of the cavity; a magnetic conductor is arranged on the lower mold assembly and can move close to or away from the permanent magnet; the upper mold assembly and the lower mold assembly perform a mold closing action; the second magnetic conducting part is close to the upper part of the cavity; material enters the cavity to be formed; the magnetic conductor moves outward; the permanent magnet forms a magnetic circuit between the magnetic conducting parts to magnetically orient the material in the cavity; during mold opening, the magnetic conductor moves to the outside of the permanent magnet and the lower magnetic conducting block to shield the magnetic circuit between the magnetic conducting parts; the application has the advantages of better magnetic field orientation effect on the material and convenient product removal; and the application relates to the technical field of magnet forming molds.

The utility model discloses an automatic magnetizer for a motor rotor, which comprises a feeding and sorting mechanism and a synchronous magnetizing mechanism, a transfer mechanism is arranged on the inner side of the middle part of the feeding and sorting mechanism, the synchronous magnetizing mechanism and a detection mechanism are arranged between the feeding and sorting mechanism and the transfer mechanism, the detection mechanism is positioned behind the synchronous magnetizing mechanism, and the synchronous magnetizing mechanism is connected with the synchronous magnetizing mechanism. The feeding and sorting mechanism comprises a mounting box, a feeding guide plate is fixedly mounted at the front end of the upper end face of the mounting box, four guide grooves are fixedly mounted at the rear end of the upper end face of the mounting box, sorting air cylinders are rotationally connected to the lower end faces of the guide grooves, and movable sorting grooves are mounted at the output ends of the sorting air cylinders. The synchronous magnetizing mechanism comprises two supporting division bars, and the two supporting division bars are fixedly connected with the mounting box. By automatically transferring, magnetizing, detecting and sorting the motor rotor, the magnetizing efficiency of the motor rotor can be effectively improved, and the quality of the motor rotor can be sorted.

The utility model discloses an auxiliary fixture for magnetizing a tile-shaped magnet, which is used for clamping a magnetic shoe to be magnetized and comprises a loading frame for storing the magnetic shoe, a placing groove for storing the magnetic shoe is arranged in the loading frame, and a clamping and positioning mechanism for preventing the magnetic shoe from shifting is arranged in the loading frame. According to the auxiliary clamp used for magnetizing the tile-shaped magnet, the magnetic tile can be conveniently placed in the containing groove of the loading frame by pulling the connecting plate, after the connecting plate is loosened, the connecting plate is automatically restored to the initial position through resilience force of the first spring, the magnetic tile is effectively limited and prevented from moving or falling off in the loading frame, and the magnetic tile magnetizing efficiency is improved. According to the magnetic shoe magnetizing device, the stability before magnetizing is ensured, stable clamping of a magnetic shoe can be achieved under the action of clamping and positioning, and the phenomenon that the position of the magnetic shoe changes at will in the magnetizing process is effectively avoided. And the magnetic shoe is stably clamped in the loading frame, so that a powerful guarantee is provided for subsequent magnetizing operation.

The invention belongs to the technical field of degaussing, and relates to a ship winding degaussing current solving method based on a gradient tensor, which comprises the following steps: acquiring the magnetic gradient tensor of a plane ship when coils are not electrified; respectively performing simulation electrification on the winding coils to obtain the magnetic gradient tensor of the electrified measurement plane; and calculating an efficiency matrix of the magnetic gradient tensor excited by the unit current. The gradient of the geomagnetic field is extremely small, direct detection of the magnetic gradient tensor of the ship and the electrified coil can better reflect the magnetic characteristics of the ship and the coil compared with detection of a magnetic vector, and better resolution is achieved for magnetic field changes caused by magnetic anomalies; under the motion platform, the magnetic gradient tensor is insensitive to the attitude angle error, and more accurate detection data can be obtained; in addition, the gradient tensor is weak in response to time-varying geomagnetic disturbance, and has higher anti-interference capability. Therefore, according to the method, the accuracy of ship magnetic field modeling and degaussing current calculation is improved, and the magnetic stealth performance of a ship facing high-sensitivity magnetic gradient detection equipment is enhanced.

A sampling pipe (7) of a sampling arrangement (6) for taking a sample from drilling dust flowing in a dust removal pipe (5) of a drilling apparatus, at an end of which sampling pipe (7) there is a suction opening (8) which is arranged to be positioned in the dust removal pipe (5) of the drilling apparatus to suck drilling dust into the sampling pipe (7). The sampling pipe (7) comprises a suction pipe (10) into which the drilling dust of the dust removal pipe (5) is arranged to be conveyed via the suction opening (8) of the sampling pipe (7), and a coil (11) connectable to alternating current and wound around the suction pipe (10).

The continuous magnetizing equipment comprises a base, a positioning disc, a blanking hopper, a magnetizing coil, a material barrel and a motor, a circular groove is formed in the middle of the top end face of the base, a blanking hole penetrating through the base is formed in one side of the circular groove, the positioning disc is rotationally connected into the circular groove, the motor and the blanking hopper are arranged on the bottom end face of the base, and the magnetizing coil is arranged in the blanking hopper. The position, corresponding to the discharging hole, of the discharging hopper is fixedly connected with the base, an output shaft of the motor penetrates through the base and is fixedly connected with the center of the positioning disc, the outer edge of the positioning disc is provided with a plurality of U-shaped openings distributed at equal angles, the U-shaped openings are used for placing cylindrical magnets for positioning, and one side of the top end of the base is provided with a magnetizing coil corresponding to the U-shaped openings. A material barrel corresponding to the U-shaped opening is arranged on the other side of the top end of the base; the positioning disc is driven by the motor to intermittently rotate by 90 degrees each time, so that the cylindrical magnets in the positioning disc are fed, magnetized and discharged when rotating stops, and the purposes of continuously magnetizing and improving the magnetizing efficiency are achieved.

The utility model relates to an energy hedging type rapid demagnetization detection device for a power transformer. The energy hedging type rapid demagnetization detection device comprises a case shell, an operation display interaction unit and an internal control system, wherein the operation display interaction unit comprises a working mode selection switch, a degaussing direction selection switch, a power switch, a start button, a scram button, a high-voltage danger indicator lamp, an alarm buzzer, a power input interface, a high-voltage output interface, a USB and network interface, a touch liquid crystal screen and a structural component, namely a mounting panel; the internal control system comprises an energy storage unit, a switching power supply, an energy interaction direction control panel, a main control unit, an intelligent high-voltage regulating unit and structural parts, wherein the structural parts comprise a bottom mounting bracket, a device mounting bracket and a buckling cover part. The intelligent high voltage regulating unit is composed of an electronic voltage regulator and a boosting transformer. The device can quickly and thoroughly eliminate residual magnetism in a large transformer iron core, is compact and reasonable in structural layout, is provided with a pull rod and trundles, and is convenient and labor-saving to use on site.

The invention discloses an austenitic stainless steel plate for a sodium-cooled fast reactor accident fault-tolerant fuel rod and a manufacturing method, and the austenitic stainless steel plate comprises the following components in percentage by weight: 0.07%-0.08% of C, 0.50%-0.60% of Si, 10.0%-11.0% of Mn, less than or equal to 0.015% of P, less than or equal to 0.002% of S, 21.5%-22.5% of Cr, 15.5%-16.5% of Ni, 5.0%-6.0% of Mo, 0.35%-0.45% of N, 0.15%-0.25% of V, 0.10%-0.15% of Nb, 0.0015%-0.0025% of B and the balance of Fe and inevitable impurities. The production method of the steel plate comprises the steps of smelting, heating, rolling, heat treatment and demagnetization treatment.

The utility model provides a circuit for inhibiting weak magnetic field pollution, a chip, a circuit board, a parallel chip and a parallel circuit board. A first positive electrode wire and a second negative electrode wire in the circuit are arranged side by side, and a first negative electrode wire and a second positive electrode wire are arranged side by side; the first positive wire and the second positive wire are connected to an external positive wiring port in parallel, and the first negative wire and the second negative wire are connected to an external negative wiring port in parallel, so that the current directions in the first positive wire and the second negative wire are opposite, and the current directions in the first positive wire and the second negative wire are opposite. Magnetic fields generated by the first positive electrode wire and the second negative electrode wire are mutually counteracted; similarly, the current directions in the first cathode wire and the second anode wire are opposite, and the magnetic fields generated by the first cathode wire and the second anode wire are offset mutually. Therefore, the circuit for suppressing the magnetic field can effectively reduce the magnetic field generated by the circuit, and can effectively reduce the magnetic pollution of an extremely weak magnetic field.

The invention discloses a bearing retainer production mold demagnetization device, and belongs to the field of mold demagnetization. The positioning bearing platform is fixedly arranged on the supporting rack and is used for bearing a bearing retainer production mold to be demagnetized; the full-coverage dynamic demagnetization module comprises a demagnetization coil assembly capable of linearly moving along the supporting rack, the demagnetization coil assembly moves to the position of the positioning bearing platform, and the magnetic field range of the demagnetization coil assembly can completely cover the geometric contour of the mold to be demagnetized; the demagnetization control unit is electrically connected with the demagnetization coil assembly and the demagnetization power supply, and is configured to trigger the demagnetization power supply to output an alternating magnetic field with preset parameters when the demagnetization coil assembly moves to completely cover the mold, and the alternating magnetic field has a constant amplitude and the direction of the alternating magnetic field is periodically reversed; and meanwhile, when the demagnetizing coil assembly reversely moves to be away from the mold by a preset distance, the demagnetizing current is attenuated to zero, and demagnetizing in a mode that the mold is away from the mold and attenuated is combined is achieved.

The application discloses a kind of magnetic sheet transmission magnetizing device, including two vibrating disk, conveying track, magnetizer and discharge assembly, two vibrating disk is located at the start end of conveying track, and two vibrating disk successively conveys material to conveying track, material includes magnetic sheet material and spacer material, one vibrating disk is used to screen magnetic sheet material, another vibrating disk is used to screen spacer material, conveying track passes through magnetizer, discharge assembly is located at the end of conveying track for receiving material, magnetic sheet material and spacer material are all sheet, on conveying track, magnetic sheet material and spacer material are vertically arranged along the width direction, and axis is arranged in parallel with conveying track. The application provides a kind of magnetic sheet transmission magnetizing device, which can keep magnetic sheet vertically placed on conveying track for transportation, to reduce the occupied space of conveying product, improve the use rate of spacer.

The present invention relates to a substrate processing apparatus for plasma processing of a substrate, and more particularly to a substrate processing apparatus and a substrate processing method in which a coil module of an electromagnet unit for generating a magnetic field in a processing space is connected to a direct current power source and an alternating current power source to form a magnetic field for controlling plasma and a magnetic field for demagnetizing a magnetized component.

The application discloses a four-stage paddle thrombus-removing micro robot, a preparation method and a magnetic field driving thrombus-removing micro robot system, relates to the technical field of micro robots, and comprises a conical drill bit, a main straight rod and a four-stage paddle group, wherein the conical drill bit is made of a biodegradable material; the bottom of the conical drill bit is connected with the main straight rod; the main straight rod is internally provided with a thrombolytic drug; the four-stage paddle group is arranged on the outer circumferential surface of the main straight rod in an axial direction; the paddle group comprises three paddle blades which are centrally symmetrical to the axis of the main straight rod; the paddle blades in the adjacent two-stage paddle groups are arranged in a staggered manner; the paddle blades are of a round head structure; the thickness of the paddle blades gradually increases from outside to inside; and the surface of the micro robot is coated with a magnetic film and is subjected to directional magnetization treatment. The application can obtain strong movement ability and stable movement state under the accurate control of a movement system, realizes intravascular drilling and crushing of a thrombus, and can biodegrade and release the thrombolytic drug after surgery, so as to solve the problem of downstream vascular embolism after drilling.

The invention relates to the technical field of part magnetizing and measuring equipment, and particularly discloses automatic magnetizing equipment which comprises a frame body, a magnetizing module, a supporting seat, a vertical positioning mechanism, a surface magnetic measuring mechanism and a control system are arranged on the frame body, the magnetizing module is cylindrical and vertically arranged, the interior of the magnetizing module is hollow, and an opening is formed in the upper portion of the magnetizing module; a magnetic flux measuring structure used for synchronously measuring the magnetic flux of the part is arranged in the magnetizing module, the supporting seat vertically and movably penetrates through the magnetizing module and is horizontally and rotationally connected to the frame body, and the vertical positioning mechanism is located above the supporting seat and abuts against the part on the supporting seat; the surface magnetic measurement mechanism is located on one side of the magnetizing module and is aligned with the side surface of the part. The control system is electrically connected with the magnetizing module, the supporting base, the vertical positioning mechanism and the surface magnetic measurement mechanism. The device has the advantages that a series of operations of magnetizing and measuring the part are facilitated, so that the production time is shortened, and the production efficiency is improved.

The invention provides a transformer residual magnetism detection method for improving direct current demagnetization, and belongs to the technical field of power equipment detection. The method comprises the following steps: demagnetizing a transformer iron core to eliminate an interference magnetic field, applying direct current excitation through a special winding to generate controllable preset residual magnetism, establishing a detection circuit in which a primary side winding is connected with an external resistor in series and a secondary side winding is open-circuited, and sequentially applying direct current small signal excitation with the same size and opposite directions, the method comprises the following steps: collecting forward and reverse transient current and voltage waveforms, comparing current change rate after filtering to judge the residual magnetism direction, solving the equivalent resistance of an iron core based on the waveform consistent with the residual magnetism direction, obtaining a detection result by combining the monotone fitting relationship between the resistance and residual magnetism, and finally assisting verification and calculating a relative error through an energy method. And if the error does not exceed 5%, it is determined that detection is effective, accurate and lossless detection of the magnitude and direction of the residual magnetism can be achieved, and detection reliability and engineering applicability are effectively improved.

The invention relates to the technical field of permanent magnet magnetizing, and discloses a complex curved surface permanent magnet multi-pole magnetizing method and system. The method comprises the following steps: preparing a permanent magnet to be magnetized and importing magnetization vector field data; carrying out adaptive grid division on the permanent magnet to be magnetized, determining a magnetizing sequence from strong to weak, and planning a magnetizing path; pre-magnetizing each magnetizing unit according to a path sequence, and generating a pulsed magnetic field meeting parameter requirements to complete magnetizing; magnetic field distribution measurement and deviation calculation are carried out, an actual magnetization vector field is reconstructed, the deviation between an actual magnetization vector and a target magnetization vector is calculated, and standard exceeding units exceeding a precision threshold value are identified; and establishing a magnetizing response model, obtaining coupling interference of adjacent units, calculating compensation parameters of standard-exceeding units, and performing iteration until the whole magnetic field distribution meets the precision requirement. Omnibearing and high-precision multi-pole magnetizing of the complex curved surface permanent magnet is achieved, the magnetizing direction can be continuously changed in a three-dimensional space, and interference of adjacent areas is effectively restrained.

The feeding and discharging system for the cleaning machine comprises a conveying mechanism located on the outer side of a cleaning cavity of a cleaning mechanism, the conveying direction of the conveying mechanism is perpendicular to the axis direction of the cleaning cavity, and a feeding and discharging mechanism is arranged on the conveying mechanism and located in the axis direction of the cleaning cavity. A placing frame of a workpiece to be cleaned is conveyed to the axis of the cleaning cavity through the conveying mechanism, and the placing frame is pushed to move in the axis direction of the cleaning cavity in cooperation with the feeding and discharging mechanism. A to-be-cleaned workpiece can be automatically pushed into the cleaning cavity through the feeding and discharging mechanism for efficient cleaning operation, the to-be-cleaned workpiece is automatically pushed out through the feeding and discharging mechanism after cleaning is completed, automatic discharging operation of materials is achieved, and the feeding and discharging efficiency and safety of the to-be-cleaned workpiece are greatly improved; the operation is more convenient and efficient.

The utility model provides a magnetizing device. The magnetizing device comprises an insulator, a plurality of magnetic conductive iron cores and a plurality of coils, the insulator is cylindrical; the magnetic conductive iron cores are arranged on the insulator in a sleeving mode and distributed in the first direction. A containing cavity is formed between every two adjacent magnetic conductive iron cores. A product to be magnetized is sleeved on the magnetic conductive iron core; the first direction is the axis direction of the insulator; a group of coils are arranged in each accommodating cavity; the winding directions of two adjacent groups of coils are opposite, and a non-magnetic insulating material is filled between the coils and the magnetic iron core. In the application, each group of coils form a reverse magnetic field, magnetic lines of force form a radial magnetic field along the circumferential radial direction through each layer of magnetic conductive iron cores, and are arranged along the axial direction, so that a plurality of radial radiation rings with alternating N-S poles are formed at one time, and the number of radial radiation magnetic poles is equal to the number of layers of magnetic conductive iron cores. The magnetizing device not only can magnetize a plurality of to-be-magnetized products at the same time, but also is not limited by the length size of the to-be-magnetized products, and the magnetizing efficiency of the to-be-magnetized products is improved.

The utility model relates to a small magnet magnetizing device which comprises a rack and a magnetizing mechanism arranged on the rack, the magnetizing mechanism comprises a magnetizing base and a magnetizing drive, a feeding mechanism and a discharging mechanism are arranged on the two sides of the magnetizing mechanism respectively, the feeding mechanism comprises a vibration disc, a flat vibration conveying plate and a feeding drive, and the discharging mechanism comprises a discharging drive. The feeding mechanism comprises a feeding drive and a feeding seat, the feeding drive can move to-be-magnetized magnets on the flat vibration conveying plate to the magnetizing mechanism, the discharging mechanism comprises a discharging drive and a discharging seat, the discharging drive can move the magnetized magnets on the magnetizing mechanism to the discharging seat, the discharging seat is made of an elastic material, and a through fixing hole is formed in the discharging seat. The size of the fixing hole is smaller than that of the magnet, and a detection sensor is arranged below the discharging base. According to the blanking device, the blanking base made of the elastic material is arranged, meanwhile, the fixing holes are formed in the blanking base, magnetized magnets are fixed through the fixing holes and can be arranged in an adsorption mode after passing through the fixing holes, quantitative and regular material receiving is achieved through the detection sensor, and use is convenient.

The invention discloses a mineral insulated cable and a preparation method thereof, and belongs to the technical field of mineral insulated cables. A mineral insulated cable comprises a conductive core, an insulating layer and an embossed copper protective layer. The insulating layer is the magnetic particles coated with the silicon dioxide layer, has high insulativity, can replace magnesium oxide, has better low water absorption than magnesium oxide, and is beneficial to long-term stable power supply. After being magnetized, the magnetic particles wrapped with the silicon dioxide layers have permanent magnetism, can keep magnetism in a high-temperature environment for a long time, and can ensure that the insulating property is not reduced after the insulating layer is bent; the technical defects that a conventional magnesium oxide insulating layer needs to adopt a binder and the bending insulating property is reduced are overcome; and the cable is easy to bend and convenient to construct.

The utility model provides a demagnetizer for a bearing ring. The demagnetizer comprises a rack, the transmission roller conveying mechanism is arranged in the length direction of the rack; the demagnetizing mechanism is installed in the middle of the rack and arranged in the width direction of the rack and comprises a supporting frame installed on the rack, an upper magnet yoke assembly capable of ascending and descending along the supporting frame and a lower magnet yoke assembly installed on the rack and arranged right opposite to the upper magnet yoke assembly; the upper magnet yoke assembly comprises a first U-shaped magnet yoke and first coils, an opening of the first U-shaped magnet yoke faces downwards, and the first U-shaped magnet yoke is wound with two sets of parallel first coils. The lower magnet yoke assembly comprises a second U-shaped magnet yoke and second coils, an opening of the second U-shaped magnet yoke faces upwards, and two sets of parallel second coils are wound on the second U-shaped magnet yoke; the first coil and the second coil are connected in parallel. By adjusting the height of the upper magnet yoke assembly and the magnetic field intensity generated by the coil, effective demagnetization of the bearing ring is realized.

The utility model relates to the field of blade box processing equipment, in particular to a blade box labeling degaussing device, which comprises a labeling component, a degaussing component, a conveying component and an overturning component, during labeling, a blade box is conveyed to the starting point of the first conveying component from a front procedure, and a blocking cylinder controls a blocking rod to move to abut against the blade box. The overturning air cylinder controls the clamping jaw to clamp the blade box to overturn by 180 degrees, and then conveying and labeling are conducted. And the first conveying assembly conveys the labeled blade box to the starting point of the second conveying assembly, an overturning air cylinder at the position of the second conveying assembly repeats the actions, after the blade box is overturned by 180 degrees, the blade box recovers the state that the front face faces upwards, and then demagnetization is conducted through the demagnetization assembly. Therefore, the bottom surface of the blade box can be labeled, and the final delivery of the blade box is not influenced. Compared with multi-angle adjustment of a labeling manipulator in the prior art, the requirement for the manipulator is lowered, the labeling time of the manipulator does not need to be increased, and therefore the labeling efficiency is improved.

A sagger-leveling demagnetization device, belonging to the field of lithium iron phosphate new energy material processing and magnetic material selection technology, includes a frame. One end of the frame has a pushing mechanism, and a vibrating part is movably mounted on the frame. The other end of the frame has a vibration mechanism. The pushing mechanism is connected to the vibrating part to move it to the vibration mechanism, which in turn drives the vibrating part to move up and down and vibrate horizontally. This invention features a sealing cover on the sagger to prevent dust generation during leveling. During leveling, the side top bars, first end posts, and second end posts constrain the outer periphery of the sagger, while rollers and the sealing cover constrain the vertical direction of the sagger. This design prevents the sagger from moving relative to the vibrating part during leveling, thus avoiding damage.

A sampling pipe (7) of a sampling arrangement (6) for taking a sample from drilling dust flowing in a dust removal pipe (5) of a drilling apparatus, at an end of which sampling pipe (7) there is a suction opening (8) which is arranged to be positioned in the dust removal pipe (5) of the drilling apparatus to suck drilling dust into the sampling pipe (7). The sampling pipe (7) comprises a suction pipe (10) into which the drilling dust of the dust removal pipe (5) is arranged to be conveyed via the suction opening (8) of the sampling pipe (7), and a coil (11 ) connectable to alternating current and wound around the suction pipe (10).

The utility model discloses a mobile phone shell rear magnetizing device and an aramid fiber strong magnetic mobile phone shell, the device comprises a magnetizing jig, the magnetizing jig comprises a magnetizing upper die and a magnetizing lower die, the magnetizing lower die is provided with a profiling cavity, the shape of the profiling cavity is the shape of a mobile phone shell to be magnetized, an unmagnetized mobile phone shell is positioned and placed in the profiling cavity, and the magnetizing upper die and the magnetizing lower die are arranged in the profiling cavity. A magnetic steel ring is arranged in an interlayer of the mobile phone shell, the magnetizing upper die comprises an upper magnetizing magnetic ring, the magnetizing lower die comprises a lower magnetizing magnetic ring, the central axis of the upper magnetizing magnetic ring is coaxial with the central axis of the lower magnetizing magnetic ring, and during magnetizing, the central axis of the upper magnetizing magnetic ring and the central axis of the lower magnetizing magnetic ring are coaxial with the central axis of the magnetic steel ring. According to the mobile phone shell post-magnetizing device and the mobile phone shell, the magnetic steel ring is embedded into the aramid fiber shell, the mobile phone shell is formed at high temperature, and then the magnetic steel ring is strongly magnetized, so that the magnetism of the magnetic steel ring can be effectively enhanced, the magnetic attraction force is strong, and the magnetism is not attenuated after long-term use.