112results about How to "Guaranteed alignment" patented technology

The utility model is suitable for the technical field of precision mould equipment, provides a kind of anti-deviation high-precision plastic forming mould, including device main body, device main body includes workbench, upper die, lower die and electric telescopic column, electric telescopic column both ends are connected in workbench and upper die, workbench has sliding slot;Anti-deviation structure, anti-deviation structure includes abutment plate, rack, rotating gear and motor, rack is installed in abutment plate lower end, rotating gear is engaged with rack, abutment plate lower end is slidably placed in sliding slot, rack axial and sliding slot axial are parallel;In the utility model, the motor driving rotating gear rotates after normal rotation, rack moves in the same direction, abutment plate moves along sliding slot oppositely, until abutment plate and lower die side wall are attached;Motor driving rotating gear reverse rotation abutment plate moves along sliding slot oppositely after reverse, to ensure that upper die and lower die are aligned, and prevent the molten plastic adhered on abutment plate from overflowing.

The utility model discloses a combustion control device for an RTO (Regenerative Thermal Oxidation) incinerator, which relates to the technical field of combustion control of incinerators and comprises a bracket, and a control valve II is fixedly mounted on the outer surface of a transmission pipe; an adjusting mechanism used for controlling the combustion size is arranged between the controller and the conveying pipe and comprises a fuel gas inlet fixedly formed in the outer surface of the controller. According to the combustion control device for the RTO incinerator, external air is conveyed through the air inlet, the air circulates in the conveying pipe, a first control valve is installed on the side, close to the air inlet, of the conveying pipe, the circulating air is controlled through the first control valve, and the air is conveyed into a combustion-supporting air pipeline through the conveying pipe; the sealing disc is installed at the connecting position of the pipeline, so that the sealing performance of the pipeline is improved, the gas leakage phenomenon is avoided, the situation that the gas circulation size cannot be adjusted when the first control valve is damaged is avoided through the second control valve, the guarantee for equipment is improved, and the safety of the pipeline is guaranteed.

The application provides a double-station electric core stacking assembly, which comprises a vertical plate, at least one positioning carrier fixed to the bottom of the vertical plate, at least one correction clamping device slidingly connected to the vertical plate, a positioning pressing frame, a first clamping assembly connected to the positioning pressing frame, the first clamping assembly extending to the lower sides of the positioning pressing frame, a second clamping assembly arranged between the first clamping assemblies, and a rotating pressing cylinder and a pushing cylinder. The assembly positions a loading plate through the positioning carrier and the loading plate locking assembly, and then positions a square electric core sent by a previous mechanical hand through the correction clamping device, so that the first clamping assembly and the second clamping assembly ensure that the position of the electric core can be centered after the handover, and the electric core is gradually stacked up and down, the electric cores are aligned with each other, and the whole assembly structure is compact.

This utility model relates to the field of parts processing technology, and in particular to a pneumatic riveting machine. The pneumatic riveting machine includes: a worktable, a tightening assembly, a receiving block, a sliding rod, a sliding block, and a driving assembly. A placement plate is fixedly connected to the top of the worktable, and a placement mold is placed in the center of the top of the placement plate. Assembly plates are symmetrically fixedly connected to the outside of the placement mold. Mounting holes are provided on the far sides of the two assembly plates, and tightening assemblies are installed on the inner walls of the mounting holes. Receiving blocks are symmetrically fixedly connected to the top of the placement plates, and a controller is installed on one side of the rear receiving block. Connecting blocks are slidably connected to the inner walls of the adjacent sides of the two receiving blocks, and a carrying column is fixedly connected to the adjacent sides of the two connecting blocks. This utility model eliminates the need for a separate starting and fixing fixture like traditional equipment, solving the positioning deviation problem caused by poor coordination between traditional fixtures and riveting, and avoiding damage to the workpiece due to excessive clamping force.

The utility model relates to welding equipment technical field, concretely relates to a kind of intelligent gantry submerged arc automatic welding machine, it includes: piece platform, top is equipped with multiple piece grooves along length direction, and both sides are equipped with machine tool track respectively;Welding machine tool, welding machine tool is transversely placed above piece platform, and two ends are respectively equipped with with machine tool track cooperation walking mechanism, welding machine tool top is respectively equipped with welding machine power supply corresponding each piece groove;Movable crossbeam, movable crossbeam is horizontally arranged in welding machine tool middle part, and movable crossbeam is equipped with with each piece groove corresponding cross slide;Telescopic arm, respectively with each cross slide corresponding each cross slide connection, bottom end is respectively equipped with welding torch, welding torch is connected with corresponding welding machine power supply;Controller, controller is set in one side of welding machine tool, and walking mechanism, telescopic arm, welding machine power supply and welding torch are respectively electrically connected with controller.The utility model is integrated, and automation design has significantly improved the efficiency and quality of I-shaped steel structure welding.

The present application relates to the field of plywood production, and discloses a kind of bamboo single-layer two-piece intelligent weaving device and control system thereof, comprising: machine table, the machine table is provided with three groups, multiple machine tables are horizontally arrayed in working surface, the left side of the machine table is provided with V-shaped table, the upper surface of right side one group of the machine table is sequentially provided with polisher and slitting machine from left to right, the upper surface of left side one group of the machine table is sequentially provided with polisher and cross cutting machine from left to right, the upper surface of the V-shaped table is provided with two groups of cross cutting machines side by side in front and back, and the left surface of the machine table is provided with conveying frame;The slitting machine comprises a slitting table.In the present application, by setting the measuring assembly, when the bamboo piece enters the inside of slitting table, the bamboo piece will extrude the extrusion rod and force it to move upward, when the extrusion rod moves upward, the displacement sensor can measure the thickness of the bamboo piece by detecting the moving distance, and then it will send data to the slitting adjusting motor.

The utility model discloses an uncoiler for galvanized steel coil production, which comprises a feeding plate, the side wall of one side of the feeding plate is rotatably connected with a positioning column, the four sides of the positioning column are respectively provided with a supporting plate, one side of the feeding plate is provided with a base, and the edge of one side, far away from the feeding plate, of the top of the base is fixedly connected with a side vertical plate. A lifting groove is formed in the middle of the side wall, opposite to the feeding plate, of the side vertical plate, a connecting plate is detachably connected into the lifting groove through a sliding block, the base and the side vertical plate are arranged on one side of the feeding plate, a next steel coil needing to be uncoiled can be placed on the supporting column, and therefore after the current steel coil is machined, the steel coil can be uncoiled conveniently. The supporting column is driven to the position where the supporting column is attached to the end of the positioning column through the guide rail, then the steel coil on the supporting column is pushed to the positioning column through the material pushing telescopic rod, in this way, the effect of rapidly replacing the steel coil can be achieved, redundant disassembly and assembly actions are not needed, time can be effectively saved, and efficiency can be effectively improved; and the pushing smoothness of the steel coil can be improved.

The utility model discloses an office table panel connecting structure, and belongs to the technical field of connection. The office table panel connecting structure comprises a pair of semicircular fixing plates, semicircular fixing frames are fixedly connected to the upper end faces of the fixing plates, connecting assemblies are arranged between the fixing plates and the semicircular fixing frames, and clamping strips are fixedly connected to the lower portions of the interiors of the semicircular fixing frames; the connecting assembly comprises an inserting plate located between the fixing plates and the semicircular fixing frame, the periphery of the upper end face of the inserting plate is fixedly connected with an arc-shaped sliding strip, the arc-shaped sliding strip extends into the semicircular fixing frame, and the two fixing plates and the semicircular fixing frame can be rapidly guided to be in accurate butt joint through mutual attraction of magnet blocks on the two limiting plates; a complete closed ring is formed, it is guaranteed that the two office table panels are aligned and attached horizontally, dislocation or gaps after connection are avoided, and a foundation is laid for stable connection.

The utility model belongs to the field of flat steel connecting iron accessory, specifically a kind of porous site adjustable flat steel connecting iron accessory, including A flat steel, the bottom lap of A flat steel is angle steel, one side of angle steel is rotatably connected with adjusting fixed component, one side lap of adjusting fixed component is A flat steel, one end of A flat steel is fixedly connected with butt joint component, one end of butt joint component is fixedly connected with B flat steel;Through the structural setting of adjusting fixed component, when using the connecting iron accessory to fix flat steel, flat steel is placed above angle steel, then construction personnel make threaded rod rotate by rotating rotating handle, and threaded cylinder is moved to the direction close to flat steel by screwing, fixed sheet is clamped to flat steel by threaded cylinder, so that the connecting iron accessory can fix and support flat steel of different thickness, improve the applicability of connecting body accessory.

This invention discloses a drilling device for processing and producing wrought iron railings, relating to the field of wrought iron railing processing technology. It includes a support leg, a drilling mechanism, and a fourth transmission rail. The drilling mechanism is located on the top of the support leg, and the fourth transmission rail is installed on the top of the support leg. The drilling mechanism includes multiple positioning frames that slide on the top of the fourth transmission rail. Each positioning frame has a railing placement groove on its top to ensure the holes are at the same horizontal position. After drilling, the railings are directly welded and fixed, ensuring that the holes of the connecting pieces align with the connecting posts during subsequent bolt connections. This improves installation quality and avoids enlarged holes and misalignment of the railings after installation. This process ensures that the holes of the connecting pieces and connecting posts correspond perfectly, improving hole accuracy. Direct welding after drilling reduces process steps, increases processing efficiency, and ensures overall structural dimensional stability.

The invention discloses an assembly type adjustable positioning tool for a stand column and a corner connecting box and a construction method thereof.The assembly type adjustable positioning tool comprises a supporting platen, the supporting platen is erected on the ground, strip-shaped through holes are formed in the two opposite ends of a tabletop of the supporting platen respectively, and the strip-shaped through holes in the two ends of the supporting platen are arranged in the same direction; the lower portions of the sliding pedestals are adjustably installed in the strip-shaped through holes, one sliding pedestal is arranged in the opposite ends of the two strip-shaped through holes, and the other sliding pedestals are arranged in the opposite ends of the two strip-shaped through holes; the abutting plate is formed on the side portion of the sliding seat, and the abutting plate abuts against the corner connecting box or the stand column; the base plates are arranged between one sliding pedestal and the stand column and between the stand column and the abutting plate; the limiting plate is formed by the limiting plate and the other sliding pedestal at the opposite ends of the two strip-shaped through holes, and the limiting plate abuts against the opposite sides of the two corner connecting boxes. The problem that an existing tool for assisting modular steel structure assembly cannot meet the assembly precision requirement is solved.

The utility model belongs to the technical field of reinforcing steel bar processing, particularly relates to a reinforcing steel bar quick clamping and threading device, and aims to solve the problems of low efficiency, inaccurate alignment (easy thread processing deviation), high labor intensity of operators, low production efficiency and the like caused by the fact that the position and height of a threading tool (such as a sleeve) in a traditional threading device need to be manually adjusted. In order to solve the problems of long processing interruption time and low efficiency due to the fact that a traditional reinforcing steel bar fixing device is generally of a single-groove or static design and needs to be shut down, manually unloaded and re-clamped when reinforcing steel bars are replaced, the following scheme is provided: the reinforcing steel bar fixing device comprises a working plate, and four supporting legs are fixedly mounted at the bottom of the working plate; the wire feeding mechanism is slidably mounted at the top of the working plate; the reinforcing steel bar fixing mechanism is mounted at the top of the working plate and is matched with the wire feeding mechanism; and a limiting strip is fixedly mounted on the side of the bevel edge plate. The utility model solves the problems of many manual operations, low efficiency, unstable quality and the like in the traditional steel bar threading device.

The invention discloses a multi-modal physiological signal dynamic impedance adaptation and synchronous acquisition system, which belongs to the technical field of multi-modal data acquisition, and comprises a plurality of multi-modal data acquisition terminals, a relay gateway and an upper computer, the multi-modal data acquisition terminals are connected with the relay gateway, and the upper computer is connected with the relay gateway; each multi-modal data acquisition terminal comprises a multi-modal data acquisition end, a control module, a wireless communication module and a storage module, the multi-modal data acquisition end is used for acquiring multi-modal data, the control module receives data transmitted by the multi-modal data acquisition end and transmits the received data to the storage module and the relay gateway, and meanwhile, the wireless communication module transmits the received data to the relay gateway. The impedance is dynamically adapted to improve the input signal quality of the multi-modal data acquisition end; the storage module is used for storing data transmitted by the control module, and the wireless communication module is used for transmitting signals. By adopting the system, the portability of equipment and the wearing comfort of a user are improved, and the synchronization precision is high.

The utility model relates to the technical fields of screw locking fixture, disclose panel face cover screw positioning fixture, including jig seat and electric screwdriver assembly, jig seat includes two board support platform and cover support platform, cover support platform includes first fixed plate and second fixed plate, forms cover support groove between first fixed plate and second fixed plate, cover support groove is used for the embedding of face cover spare, first fixed plate and second fixed plate are used for positioning face cover spare respectively, cover support platform is between two board support platforms, board support platform has board support groove, board support groove is used for the embedding of panel spare, and board support groove is used for positioning panel spare, electric screwdriver assembly is used for locking screw spare to panel spare and face cover spare. Automatic lock pays screw spare, improves efficiency and effectively controls lock pays torsion, avoids the damage of part caused by lock pay, simultaneously, board support platform and cover support platform improve the feeding accuracy of face cover spare and panel spare, guarantee the alignment of face cover spare and panel spare, thereby improve the assembly accuracy and timeliness of face cover spare and panel spare, and further improve assembly efficiency.

The application discloses a kind of multi-station clamping tool for laser welding and its temperature control method, it is related to clamping tool technical field, including: rack, moving mechanism and drive mechanism, the controller is installed in rack side, the controller is used to control clamping tool, the rack bottom is connected with moving mechanism, the moving mechanism is provided with two, one of which is connected with drive mechanism, during welding process, when steel pipe rotates, weld and roller contact, if weld is too thick, it will make roller move upwards, trigger infrared sensor to detect displacement threshold change, to remind operator to handle in time, ensure welding quality;By the second plug, external high temperature and high pressure gas is injected into steel pipe, the heat conduction effect of gas is used to heat and keep warm welding area, prevent weld from low ambient temperature and rapidly cool down, avoid producing fissure, to effectively improve welding efficiency and quality.

The application discloses a vertical annular winding machine for automatically changing film rolls and relates to the technical field of packaging equipment. The application comprises a lifting frame, the bottom of the lifting frame is provided with a freight table, the top of the freight table is placed with goods, the lifting frame is fixedly installed with a lifting module, the inside of the lifting frame is slidably installed with a rotating work ring, the rotating work ring is drivingly connected with the movable end of the lifting module, the movable end of the rotating work ring is provided with an automatic film changing film seat, and the automatic film changing film seat is used for transferring the film roll between the unloading position and the film changing position by following the rotation of the rotating work ring. The application is accurately matched by four sets of servo mechanisms, each execution action is supported and operated by a specially designed automatic film unloading mechanism, an automatic film sliding positioning mechanism, an automatic film changing film seat and an automatic film changing platform, and the absolute safety, high efficiency, convenience, low cost and humanized operation of the winding operation are ensured.

The invention discloses a ship engine methanol fuel supply pipeline detection device, and relates to the technical field of pipeline detection, the ship engine methanol fuel supply pipeline detection device comprises a cabinet, and the upper surface of the cabinet is fixedly provided with a panel. By arranging the case and the panel, a firm protective shell and a flat operation platform are provided for the whole detection device, the case is made of an anti-corrosion material so as to adapt to the marine environment, and the panel serves as an installation reference of each functional module; the spraying mechanism is used for rapidly injecting a detection solution into the methanol fuel supply pipeline, a first connecting frame is fixedly arranged on the outer surface of the spraying mechanism, and the first connecting frame is fixedly connected to the inner wall of the panel. By arranging the spraying mechanism and the first connecting frame, a high-pressure injection system of a detection solution is formed, the first connecting frame provides accurate mounting and positioning for the spraying mechanism, and the spraying mechanism is responsible for generating controllable pressure to quickly inject the detection solution into a to-be-detected pipeline, so that the effect of sealing and detecting a supply pipeline is achieved.

A kind of roller press equipment mechanism, including operation platform, sliding clamping block and lateral press equipment jaw, the middle of operation platform is equipped with clamping block moving groove, guide rod is connected between the two side walls of clamping block moving groove, two sliding clamping blocks are slidably connected on guide rod, the top of sliding clamping block is fixed with clamping block, clamping block includes a pair of oppositely arranged clamping plate and clamping cylinder, clamping cylinder is fixed in the middle of clamping plate, the telescopic end of clamping cylinder passes through clamping plate and is connected with extrusion backing plate at telescopic end head, side stand is set on operation platform at the two sides of clamping block moving groove, side stand is provided with longitudinal press equipment jaw moving groove, screw rod is provided in press equipment jaw moving groove, longitudinal moving block is threadedly connected in press equipment jaw moving groove by screw rod.The sliding clamping block of the present application is bidirectional sliding along guide rod, cooperates with clamping cylinder to drive extrusion backing plate to carry out bidirectional synchronous clamping to supporting pipe shaft, eliminates artificial fixing deviation, and ensures the accurate centering of shaft and roll body.

The utility model relates to the technical field of smoke exhaust fire damper controller, especially to a smoke exhaust fire damper controller with quick assembly structure, including shell and bottom plate, the bottom plate fixed connection in the shell one side, the recess is seted up on the bottom plate, install fixed component in the recess, the fixed component includes sucking disc, support, disc, second spring, crossbeam, the crossbeam sliding connection is in the recess, a plurality of second spring all are fixedly connected between crossbeam and recess bottom wall, the recess bottom wall between fixed connection has disc, the utility model in the air bag is tightly adsorbed on the outside box body lateral wall when being stretched inside negative pressure, can make sucking disc, thereby realizes the effect that the bottom plate and shell are fixed, avoids when screwing the screw, the shell and the bottom plate are offset, ensure that the through -hole on the protruding piece is always aligned with the reserved hole on the outside box body lateral wall.

The invention relates to a video generation method and device, electronic equipment, a medium and a program product, and the method comprises the steps: displaying a preset creation page which comprises video generation reference information, and the video generation reference information comprises a target reference video; in response to the video generation instruction, a generated target video is displayed, the target video is generated based on at least two video reference materials carrying timestamps, and the at least two video reference materials and the timestamp corresponding to any video reference material are separated based on the target reference video by the multi-modal separation model; the timestamps corresponding to the at least two video reference materials are used for aligning the at least two video reference materials. By using the technical scheme provided by the embodiment of the invention, the video generation efficiency can be improved while the diversity of the generated video content and the video quality are improved.

The utility model relates to a kind of projector device of built-in television stick Dongle, comprising: shell, its inside is equipped with the installation slot for accommodating television stick Dongle;Mainboard is fixed in the shell, its edge is provided with HDMI terminal, the plug interface of the HDMI terminal is directly opposite the lateral opening of the installation slot;The side wall of the installation slot is equipped with rib, the rib is configured to make the HDMI interface of television stick Dongle and the fixed structure of mainboard HDMI terminal after wirelessly plug-in;Box cover is locked by screw in the top of the shell, television stick Dongle is enclosed in the installation slot.By canceling all connecting wires and ATV adapter board, the HDMI interface of television stick Dongle and mainboard HDMI terminal are designed as the physical straight insertion structure without intermediary, ensure signal stable and reliable and connection firmness.

The application belongs to the technical field of high-voltage conductor surface microstructure preparation, and relates to a preparation device and a preparation method of an overhead high-voltage conductor surface microstructure. The device comprises a guide module, a stamping module and two winding modules. The guide module and the stamping module are arranged between the two winding modules, and the two winding modules are used for winding storage of the conductor before and after processing. The guide module is used for positioning the conductor at the same position as the axis of the stamping module, so as to facilitate the stamping of the conductor surface by the stamping module to process and form a surface microstructure. The wire after twisting is positioned and extruded by the guide module, the stamping module and the two winding modules, so that the microstructure is prepared on the wire surface. The surface microstructure can effectively improve the anti-icing performance of the surface coating of the overhead high-voltage conductor, thereby improving the stability of the power system.

This invention discloses a mobile centering and shaping pallet stacking device and its warehousing system that adapts to multiple pallet sizes, belonging to the technical field of automated warehousing and logistics equipment. The pallet stacking device includes a ground track, a walking drive mechanism, a truss assembly, a lifting frame, a lifting drive mechanism, a picking and placing mechanism, an advance and retraction fork drive mechanism, and a spacing adjustment drive mechanism. The advance and retraction forks and spacing adjustment both adopt a bidirectional positive and negative threaded screw centering slide module, which can perform synchronous centering actions, automatically adapt to multiple sizes of sub-pallets and mother pallets, and ensure centering clamping accuracy. The warehousing system includes the above-mentioned pallet stacking device, a sub-pallet conveyor line with rotation and direction adjustment function, and a mother pallet conveyor line. The transfer and stacking of sub-pallets to mother pallets is completed through walking movement. This invention can realize multi-size pallet adaptive adaptation, mobile cross-workstation stacking, and full-process centering and shaping. The stacking neatness is high, the equipment is highly versatile, the system layout is compact and occupies little space, and it significantly improves the automation and flexibility of warehousing pallet stacking operations.

The utility model discloses an automatic spraying device for a wind power tower drum, and relates to the technical field of wind power tower drum installation. Comprising a base, a rotating mechanism is arranged on one side of the top of the base and used for supporting a tower drum, the rotating mechanism comprises a bottom plate, the bottom plate is connected with the base, a notch is formed in the center of the top of the bottom plate, and a sliding plate is slidably connected into the notch. Through the arrangement of the rotating mechanism and the spraying mechanism, in the using process, a tower drum is firstly hoisted and placed above the bottom plate, and then a motor drives a two-way screw to rotate so that a sliding plate can drive a rubber supporting pad to move; and finally, when the angle of the tower drum needs to be adjusted, the motor drives a second gear to rotate to drive a first gear and a rotating shaft to rotate, so that the angle of the tower drum is adjusted, and the angle of the tower drum is adjusted. The device can ensure that all parts on the surface of the tower drum are uniformly sprayed, and spraying leakage or repeated spraying is avoided.

The utility model relates to the field of hot runner manifold, especially to a mould blank hot runner manifold convenient to install. Including have lower manifold, upper manifold, injection pipe, hot runner, heating wire etc. ; A plurality of threaded holes are opened to lower manifold, a plurality of fixed holes are opened to upper manifold, fixed bolt passes through threaded hole and is connected with lower manifold threadedly, fixed bolt passes through fixed hole and is connected with upper manifold slidingly, fixed bolt passes through threaded hole and fixed hole and fixes lower manifold and upper manifold together, and folding rod is rotatably arranged at the top of fixed bolt. The utility model realizes the fixation of lower manifold and upper manifold through the cooperation of fixed bolt, threaded hole and fixed hole, and folding rod is rotatably arranged at the top of fixed bolt, the folding rod can be rotated and unfolded as a lever to assist the screwing of fixed bolt during installation, and the folding rod can also be unfolded and used to rotate fixed bolt reversely during disassembly, so that fixed bolt can be loosened quickly to separate upper and lower manifolds.

The utility model relates to a square telecentric lens structure with corner, telecentric lens structure including main mirror barrel, extension mirror barrel, corner mirror barrel and reflector gland that connect gradually, main mirror barrel, extension mirror barrel, corner mirror barrel and reflector gland are all square structure, corner mirror barrel and reflector gland between fixed one square corner reflector, corner reflector present 45 degree angle installation fixed, compared with the prior art, the utility model has convenient installation, reduces processing difficulty, convenient fixed auxiliary device and so on advantages.

The utility model relates to a feeding device technical field especially polyester gray cloth production is with feeding device, including mounting bracket, install drive assembly on the mounting bracket, the mounting bracket top is equipped with lifting assembly, the lifting assembly all movable installation has sleeve rod and jacks in, the sleeve rod inner wall is fixedly connected with a plurality of slide rods, the both ends of slide rod all are equipped with return spring, the slide rod outer wall all slidingly connected have the dog -claw. The utility model discloses device, through setting sleeve rod, multiple dogs and jacks, jack extrusion dog -claw expands outward, makes dog -claw and the reel inner wall form multi -point position multi -area contact, promotes friction and clamping force, solves the problem that traditional limit block contact area is small, and easy to slip, and the dog -claw along the slide rod evenly distributes, and the reel inner wall forms all -round support, avoids the middle part of reel and shifts because of lack of support, ensures that the reel axis and transmission axis are aligned, eliminates the feeding position deviation.

The utility model belongs to the technical field of vacuum self-consuming furnaces, and discloses a centering device of a vacuum self-consuming furnace, which comprises a lower furnace body flange, a crucible flange and an upper furnace body flange, the crucible flange is connected onto the lower furnace body flange, the upper furnace body flange is connected onto the crucible flange, and the lower furnace body flange, the crucible flange and the upper furnace body flange are coaxial. The outer diameter of the lower furnace body flange is larger than that of the crucible flange and that of the upper furnace body flange, the outer diameter of the crucible flange is the same as that of the upper furnace body flange, three threaded holes are evenly formed in the end face of the lower furnace body flange at intervals, the threaded holes are formed in the lower furnace body flange in a penetrating mode, through holes are formed in the upper end faces of the guide columns in a penetrating mode, and the guide columns are in threaded connection with the threaded holes through bolts. The guide column comprises the guide column upper portion and the guide column base body, the guide column is used for guiding the crucible and the lower furnace body to be centered, the problems that the product quality is affected by furnace charging deviation, the crucible is prone to being damaged and the like can be avoided, the guide column can be rotated by an angle to be continuously used after being abraded, the service life of the guide column is prolonged, and the production cost is saved.