131 results about "Mechanical press" patented technology

The utility model discloses an automatic mechanical press, relates to the technical field of powder metallurgy machinery, solves the problems of non-uniform powder loading, material shortage and low production efficiency in the powder metallurgy process, and comprises a machine base, a lower mold, an upper mold, a vibrator, a feeder and a powder distributor, the lower mold is embedded in the machine base, the upper mold is arranged above the lower mold, and the vibrator is arranged above the upper mold. The vibrator is installed at the bottom of the machine base, the feeder is arranged on the machine base in a sliding mode, and the powder distributor is fixedly installed at the bottom of the feeder. Through the arrangement of the vibrator, when the lower mold is filled with powder, the lower mold can be driven by the vibrator to shake, so that the powder can be automatically filled, through the arrangement of the feeder and the powder distributor, when the feeder slides to the position above the lower mold, the powder is uniformly distributed into a cavity of the lower mold from the powder distributor, and the powder is uniformly distributed into the cavity of the lower mold from the powder distributor. And the vibrator is matched for use, so that the powder compensation efficiency and uniformity are further improved.

The present invention relates to the field of mechanical pressing technology, and in particular to a guide wheel pressing device and method based on intelligent positioning constant force control, comprising a pressing workbench, a blanking base fixedly connected to one side of the pressing workbench, a cover plate fixedly connected to the top of the pressing workbench, a workbench plate fixedly connected between the pressing workbench and the cover plate, a turntable assembly provided in the middle of the workbench, a support column slidably connected to the workbench via a slide rail, and a guide wheel pressing mechanism provided on the support column. The pressing device achieves pre-positioning through the coordinated clamping of a positioning mandrel and a positioning fixture, and at the same time, through the visual contour recognition of an industrial camera, the micro-displacement detection of a laser transmitter, and the rigid locking of a positioning pin, a positioning process of "coarse positioning-visual correction-laser precision measurement-mechanical locking" is constructed, which solves the multi-angle deviation problem of traditional single mechanical positioning and achieves bidirectional precise positioning of the guide wheel in the radial and axial directions.

The invention discloses a two-degree-of-freedom double-crank servo mechanical press, and belongs to the technical field of mechanical engineering forging and pressing equipment. According to the technical scheme, the two-degree-of-freedom double-crank servo mechanical press comprises a press body, a master servo motor, a slave servo motor, a transmission mechanism, a sliding block and a control system, and the master servo motor and the slave servo motor are both fixedly installed on the press body; the sliding block is in sliding connection with the machine body and can move in the vertical direction of the machine body. The transmission mechanism is installed on the machine body and connected with the main servo motor, the auxiliary servo motor and the sliding block. The control system is electrically connected with the master servo motor and the slave servo motor. The driving mechanism of the two-degree-of-freedom double-crank servo mechanical press is a two-degree-of-freedom mechanism, the stroke of the sliding block can be dynamically adjusted in the working process, and the kinematics process flexibility of the sliding block is improved.

The invention provides a mechanical pressing power generation remote controller which comprises an ultra-low power consumption communication chip, a high-gain onboard antenna, a ballast voltage stabilizing circuit, a crystal oscillator, two PCB power input interfaces, a remote controller PCB and a mechanical pressing power generation module. The ultra-low power consumption communication chip, the high-gain onboard antenna, the ballast voltage stabilizing circuit, the crystal oscillator and the two PCB power input interfaces are welded to the remote controller PCB. The mechanical pressing power generation module is clamped with the PCB through the power generation module buckle, after the mechanical pressing power generation module is triggered, induced electromotive force larger than or equal to 20 V is generated and input into a PCB power input interface, power is supplied to the ultra-low power consumption communication chip through the ballast voltage stabilizing circuit, and the ultra-low power consumption communication chip triggers the crystal oscillator to generate electromagnetic wave radio frequency signals with specific frequency. When the mechanical pressing power generation remote controller communicates, the ultra-low power consumption communication chip modulates the electromagnetic waves to a frequency band of 2.4 Ghz and then transmits the electromagnetic waves out through the high-gain onboard antenna, so that a remote control function is realized.

This invention discloses a direct-drive motor auxiliary starting system and a forging press, relating to the technical field of direct-drive mechanical presses. It includes an air source connected via a main pipeline to a shut-off valve, a pressure reducing valve, a check valve, and an air tank. The air tank is connected via branch pipelines to several two-position three-way shut-off valves. A balancing cylinder includes a cylinder body and a piston rod, with the piston rod dividing the cylinder body into an upper chamber and a lower chamber. The air tank is connected to the upper chamber via the first outlet of the two-position three-way shut-off valve and a first quick exhaust valve. The air tank is connected to the lower chamber via the second outlet of the two-position three-way shut-off valve and a second quick exhaust valve. The assisted lifting and starting / stopping of the balancing cylinder reduces the energy loss of the direct-drive motor and simultaneously increases the punching force when forging workpieces. The high-power direct-drive motor auxiliary starting system can be used in the crank-driven direct-drive press of the first embodiment and the screw-driven direct-drive press of the second embodiment.

The application discloses a machining method of a double herringbone gear shaft, which comprises the following steps: S1, machining gear shaft tooth blank: the center distance error of two herringbone gear hollow grooves is not more than ±0.05mm; the tooth width size error of the two herringbone gears is controlled to be within ±0.03mm; S2, machining reference hole: one reference hole with a diameter of 20mm is machined on each end of the gear shaft neck, and the symmetry error of the two reference holes is not more than 0.01mm; S3, gear milling: the gear shaft is clamped on a numerical control gear milling machine, and the error is not more than 0.02mm after the gear shaft outer circle is measured and aligned; one end of the herringbone gear is machined first, the gear shaft is clamped and aligned again after the machining is completed, and the other end of the herringbone gear is machined. The machining method is convenient to install and adjust, the phase precision of the two herringbone gears is high, the error can be controlled within 0.02mm, the transmission precision of a mechanical press can be met, and the machining precision is stable and reliable.

The utility model relates to the technical field of hemostasis equipment, in particular to mechanical pressing hemostasis equipment which can be adjusted according to the diameter of a leg or an arm, the application range is widened, the hemostasis effect is improved, and use is convenient. Comprising an equipment body, supporting mechanisms, a tightening mechanism, a pressing mechanism and a control assembly, the supporting mechanisms are installed on the left and right sides of the lower portion of the outer wall of the equipment body, a winding mechanism is installed at the upper end in the equipment body, the output end of the winding mechanism is located at the bottoms of the supporting mechanisms, and the control assembly is installed at the top of the equipment body.

The invention discloses a mechanical pressing device for an emergency department in the technical field of treatment of the emergency department, and the mechanical pressing device comprises a treatment bed body, a mechanical pressing device body, a fixing mechanism and an adjusting mechanism, the fixing mechanism comprises a first square plate and a second square plate, and first threaded holes are formed in the exteriors of the first square plate and the second square plate; a threaded fixing rod is rotationally arranged in the first threaded hole, a fixing bearing is installed at one end of the threaded fixing rod, a top plate is installed at the end, away from the threaded fixing rod, of the fixing bearing, a plurality of round holes are symmetrically formed in the top plate, and second threaded holes are formed in the exteriors of the first square plate and the second square plate correspondingly; a rotating threaded rod is rotatably arranged in the second threaded hole, the second holding plate drives the threaded fixing rod to rotate, the threaded fixing rod drives the top plate to move through the fixing bearing, and when the top plate is close to the treatment bed body, rotation of the second holding plate is stopped, the rotating threaded rod is rotated, and one end of the rotating threaded rod enters the round hole through rotation to fix the top plate.

The invention relates to a pneumatic fixing device for a bottom water tank of a gas-shielded electroslag furnace. A smelting station of the electroslag furnace is positioned in a pit; and the bottom water tank is located on a smelting station of the electroslag furnace. The bottoms of the multiple sets of bottom water tank pneumatic locking devices are fixed to the edge of the electroslag furnace smelting station. The guide rail is arranged along a preset axis of the electroslag furnace smelting station; in the smelting preparation stage, the moving side of the bottom water tank pneumatic locking device extends out to fix the bottom water tank. A pneumatic locking device of the bottom water tank is adopted, so that the bottom water tank and the smelting station of the electroslag furnace can be firmly fixed without entering a pit; compared with the pressing and loosening operation of a transmission mechanical pressing block device, the operation can be completed without entering a pit by a worker, the operation intensity of the worker is greatly reduced, and meanwhile, the operation safety of work is remarkably improved.

The utility model discloses a thickness-adjustable mechanical material pressing assembly. The thickness-adjustable mechanical material pressing assembly comprises a movable base and a lead screw transmission assembly driving the movable base to move. Two first motors, a first link plate and a second link plate are arranged on the movable base, the output ends of the two first motors are provided with a supporting plate gear and a pressing plate gear respectively, the first link plate and the second link plate extend in the moving direction of the first link plate and the second link plate to be provided with a supporting plate rack and a pressing plate rack respectively, and the supporting plate rack is meshed with the supporting plate gear. The pressing plate gear is meshed with the pressing plate rack; a supporting plate is arranged on the supporting plate rack, and a pressing plate is arranged on the pressing plate rack; a gear rack pressing mode is used for preventing shifting, upper and lower gear racks are clamped stably, and deviation of pressed materials is prevented. And the supporting plate and the pressing plate clamp the plate in a linear movement mode, so that the plates with different thicknesses are kept flush with the side wall of the plate to be subjected to edge cleaning, and the clamping stability is improved.

The invention relates to the technical field of large-size silicon carbide saggar dry-method mechanical pressing, and discloses a large-size thin-wall silicon carbide saggar dry-method mechanical pressing method and a large-size thin-wall silicon carbide saggar dry-method mechanical pressing forming die. The large-size thin-wall silicon carbide saggar dry-method mechanical pressing forming method comprises the steps that firstly, silicon carbide saggar raw materials are treated; step 2, processing and mounting a mechanical pressing forming frame and a movable block; step 3, positioning the loose piece; step 4, intervening the distribution of the mixed fine powder; 5, layered material distribution and pressing of the raw materials; and sixthly, the large-size thin-wall silicon carbide saggar is demolded. The invention discloses a dry-method mechanical pressing forming die for a large-size thin-wall silicon carbide saggar. The mechanical pressing die comprises a die sleeve I and a die sleeve II, the outer side wall of the die cavity is tightly attached and fixed to the interior of a square cavity defined by the first die sleeve and the second die sleeve. And the mechanical pressing forming frame is mounted in the mold cavity. The method has the beneficial effects that the forming strength and the density distribution uniformity are improved, so that the thermal shock stability is improved, and the defects of unfilled corners and pitted surfaces which are easy to generate during demolding are reduced.

The application provides a transmission shaft driving device, and relates to the technical field of transmission devices.The transmission shaft driving device comprises a supporting device, a servo motor, a brake and a gear shaft.The supporting device is used for being installed on the upper beam body of a press machine, and comprises first and second supporting structures which are arranged at intervals.The servo motor is installed on the first supporting structure.The brake is installed on the second supporting structure through a supporting sleeve.The spline end of the gear shaft is drivingly connected with the servo motor through a spline sleeve installed on the servo motor, and the other end is used for being connected with the brake.The gear shaft is used for generating axial movement in the working process, so that the gear shaft and the intermediate gear in the two-stage full-helical gear realize uniform meshing of the teeth on both sides of the gear.The transmission shaft driving device of the application can realize the combination of the servo technology and the full-helical gear transmission technology of the traditional mechanical press machine, and improves the transmission performance of the servo press machine to a certain extent.

The present invention provides a damping pressing device applicable to the welding of the bottom of a rocket tank, comprising: a workpiece 2, a mechanical pressing strip 3, a damping member, and an elastic backing plate 5; both ends of the mechanical pressing strip 3 are fixedly connected to a workbench; the damping members are uniformly arranged and installed on the mechanical pressing strip 3; the center lines of the elastic backing plates 5 are aligned with the axes of the damping members and are uniformly arranged and installed on the mechanical pressing strip 3; the other ends of the elastic backing plates 5 are in a free state; the damping members press down the free ends of the elastic backing plates 5, so that the free ends of the elastic backing plates 5 are pressed against the workpiece 2. The present invention can achieve the pressing of spherical-bottom and conical-bottom workpieces with any large curvature radius, without being limited by the form of the bottom of the rocket tank, and the damping screws therein can adjust themselves in real time to compensate for the deformation amount of the workpiece, so as to meet the requirements of high quality of the weld unit.

The present invention belongs to the field of battery manufacturing technology, and discloses a high-efficiency mechanical pressing device for new energy battery packaging, including a supporting component; a horizontal positioning component; a longitudinal positioning component; a moving component; a driving component and a pressing component. Through the Z-shaped pressing component, the four third hydraulic rods increase the stroke at the same time, the Z-shaped plate moves vertically downward, and the top shell and the bottom shell are pressed in the vertical direction. After being lifted and downward again, the stroke of the two third hydraulic rods on the right side is longer than that on the left side, so that the Z-shaped plate can press the top cover in a left-slanting manner. The right-slanting pressing is the opposite operation. During the pressing process, the Z-shaped plate rotates around the axis of the two second rotating shafts and the third rotating shaft, and compresses the multiple third springs therein, which solves the problem that the existing pressing device only uses a single top-down longitudinal pressing method for one-time pressing, which may cause the corresponding edge pressing gaps between the top cover and the bottom shell to be inconsistent.

The invention provides a power station gate valve capable of being inspected and maintained on line, relates to a gate valve structure technology, and particularly discloses a valve body, a gate plate, a valve rod and a valve cover, the valve body is integrally forged and formed, all internal spaces are machined, and the service performance of the valve at high temperature and high pressure is guaranteed; the valve cover, the valve rod and the gate plate which penetrate through the valve cover are integrally taken out from the mounting channel of the valve body, so that a maintainer can screw the fixing ring exposed in the mounting channel to relieve the radial constraint applied to the sectioning block, and the maintenance difficulty of the valve seat and the valve body is reduced. Therefore, the valve seat can be overhauled and replaced on line, the replacement efficiency is improved, mechanical pressing force is provided for the valve seat through the sectioning block and the fixing ring, the sealing and fixing stability of the valve seat under high pressure is ensured, the valve seat is easy and rapid to disassemble and operate, and later maintenance is facilitated.

The utility model relates to the field of automobile manufacturing, concretely relates to a press -fit type brake disc dust cover. Brake disc dust cover is provided with the central through -hole of interference fit with knuckle central boss, and the interference fit amount is 0.15-0.6mm, brake disc dust cover central through -hole and knuckle middle part boss are fixed by stamping press interference fit press -fit. Still be provided with the mounting position positioning hole on brake disc dust cover, with the corresponding setting of knuckle positioning bulge. Brake disc dust cover of the utility model and knuckle adopt interference fit assembly, distinguish with traditional bolt connection, can directly pass through mechanical press -fit, and efficiency is improved, and manpower cost is saved, and have very good stability.

The invention provides a sealing structure and an electric pressure cooker, the sealing structure comprises a support plate, the bottom of the edge of the support plate is provided with a sealing member, the inner ring of the bottom of the sealing member is provided with a first contact part, and the outer ring of the bottom is provided with a second contact part; a pushing and pressing structure is mounted at the top of the edge of the supporting plate, and the pushing and pressing structure is provided with a first pressing piece corresponding to the first abutting part and a second pressing piece corresponding to the second abutting part; a transmission assembly is installed on the top face of the supporting plate, a through hole is formed in the middle of the supporting plate in a penetrating mode, and a piston piece is slidably arranged at the through hole. When the piston part is stressed to move upwards, force can be applied to the transmission assembly, downward force is applied to the pushing and pressing structure through the transmission assembly, the first pressing part pushes the first abutting part towards the inner wall of the top of the inner pot, and the second pressing part pushes the second abutting part towards the outer side of the top of the inner pot. According to the sealing structure, a mechanical pressing part is additionally arranged, the action of secondary pressing sealing is achieved, the overall sealing performance is effectively enhanced, and the use safety and applicability are improved.

The invention discloses a green water-saving processing method for improving the gel strength and whiteness of surimi, which comprises the following steps: S1, chopping the head and tail of a raw material fish, bloodletting, scaling, removing internal organs, cleaning, slicing, peeling, separating meat, infiltrating with ice water, and filtering to obtain wet surimi; s2, squeezing and dehydrating the minced fish in the wet state in a horizontal mechanical squeezing and dehydrating machine to obtain pre-dehydrated minced fish with the water content of 74-76wt%; and S3, finely filtering the pre-dehydrated minced fish prepared in the step S2, removing residues, dehydrating, adding an antifreeze agent, chopping, controlling the water content to be 80wt%, bagging, and quickly freezing to obtain the frozen minced fish. The method can solve the problems that in the traditional rinsed minced fillet processing process, rinsing wastewater is discharged, nutritional ingredients are seriously lost, unrinsed minced fillet is poor in gel forming ability, low in gel strength and poor in whiteness, and the quality is deteriorated in the freezing storage process.

The present application relates to compressed air energy storage technology field, concretely is a kind of artificial chamber sealing steel rubber composite material composite process, for sealing steel rubber composite sealing structure to artificial chamber, the steel rubber composite sealing structure includes round plate, L-shaped rubber sealing band, guide mechanism, pressing mechanism and screw ring, the round plate is fixed in the end of artificial chamber, and sealing is carried out between round plate and artificial chamber by L-shaped rubber sealing band.This application improves the sealing effect by combining mechanical pressing with vulcanization process.In addition, the present application cooperates with one of the pressing mechanisms through the guide mechanism to pull the L-shaped rubber sealing band to form a sealing ring, reducing the difficulty of installing large-diameter sealing rings, reducing the degree of human participation, improving the installation efficiency, and can be adjusted in real time according to the actual diameter of the artificial chamber.

The invention relates to the technical field of punching machines, and discloses a multi-stage pressurizing structure of a servo punching machine, which comprises a pressure plate and a hydraulic spring coaxially and fixedly connected with the pressure plate, the hydraulic spring is coaxially connected with an annular piston, the annular piston is connected with an upper die holder, and the upper die holder is further connected with an upper die plate for pressing materials. The hydraulic spring comprises a cylinder barrel filled with hydraulic oil and two or more sets of spiral belleville springs, two or more sets of spiral flow channels are formed between the two or more sets of belleville springs, and two or more sets of inclined partition plates are arranged on the belleville springs at equal intervals along spiral paths of the belleville springs. Mechanical pressing force is converted into controllable multi-stage hydraulic pressure, so that pressure generated by the pressing plate can be stably and progressively increased in a stepped mode, damage to a workpiece and a die caused by pressure change in traditional stamping is effectively avoided, and the stability of the pressing plate in the stamping process and the forming quality of the machined workpiece are greatly improved.

The application relates to the technical field of heat exchange equipment, and discloses a multi-medium heat exchanger for new energy automobile batteries, which comprises heat exchange pipes and heat dissipation assemblies on the two sides of the heat exchange pipes, the front end of the heat dissipation assembly is provided with a quick butt joint mechanism composed of a plug-in ring, a connecting ring, a spring and a clamping plate, elastic self-locking of pipelines can be realized, and vibration-induced falling off can be prevented; a screening cylinder with holes in the outer wall is arranged in the fixed cylinder and is filled with ordinary silica gel or molecular sieve, which is used for intercepting large-particle impurities in the medium and deeply adsorbing moisture, and can eradicate the hidden troubles of system dirt blockage and ice blockage; in addition, an anti-frosting auxiliary heating structure is integrated on the upper side of the equipment, which comprises a ceramic heating core body, a heat conduction gasket and a heat conduction fin, a mechanical pressing force downward is applied through the locking of the cover plate and the bolts, the interlayer assembly gap is eliminated, and the contact thermal resistance is reduced. The application effectively improves the pipeline assembly efficiency and operation stability, and obviously enhances the battery thermal management and active anti-icing and anti-frosting capability of the vehicle under extremely cold working conditions.

The invention discloses a hydraulic cushion structure of a mechanical press. The hydraulic cushion structure comprises a base, a side column, an upper beam, a pull rod, a nut, a guide rail, a sliding block and a crank connecting rod mechanism. Four groups of side columns are arranged between the base and the upper beam, the left group of side columns and the right group of side columns are respectively connected with a group of sliding blocks through two groups of guide rails, the bottom ends of the sliding blocks are connected with an upper working table plate, the inner ends of the sliding blocks are divided into an upper cabin and a lower cabin through a middle plate, and a hydraulic cushion mechanism is arranged in the lower cabin, so that the force transmission path of a traditional press can be optimized; the structure of the sliding block is effectively simplified, the weight of the sliding block and the upper working table plate is reduced, abrasion to a guide rail is reduced, the service life of assemblies is effectively prolonged, the front end of the sliding block is connected with a protection mechanism, and the protection mechanism comprises a first connecting plate, a first transmission arm, a second connecting plate, a second transmission arm, a protection plate and other assemblies. And the protective plate is driven to overturn forwards, so that the processing range is separated and protected, and the safety during production operation can be improved.

The invention discloses a laser welding head device for mask ear line production, and relates to the technical field of mask ear line production, the laser welding head device comprises a main support, the upper surface of the main support is fixedly connected with a workbench, the lower surface of the workbench is fixedly provided with an ultrasonic structure, and the upper surface of the workbench is fixedly provided with a mounting seat; the side wall of the mounting base is slidably connected with a mounting plate, an air cylinder is fixedly mounted in the mounting plate, and a welding head is fixedly mounted at the output end of the air cylinder. By arranging a positioning structure, mechanical pressing replaces manual fixing, skewing of an ear line is prevented, meanwhile, an operator is prevented from making contact with a high-temperature area, and the working efficiency is improved. The mask and the ear line are pressed between the pressing frame and the base for processing, so that the phenomena that the ear line and the mask are pressed by directly using hands to make contact with each other, so that processing deflection is easily caused, and the risk of being scalded exists in the processing process are avoided, and the welding processing efficiency of the mask and the ear line is improved to a certain extent.

The invention discloses a special blade mounting machine. Relates to the field of impeller rotor installation. The problems that an existing special machine station is low in mechanical press-in yield, serious in interface abrasion and low in manual assembly efficiency are solved. The device comprises a feeding or discharging station, a locking plate mounting station, a blade mounting station, a locking plate locking station, a clamping rotary table, a conveying belt and an impeller, and the feeding or discharging station, the locking plate mounting station, the blade mounting station and the locking plate locking station are evenly distributed in the circumferential direction of the clamping rotary table and fixed to the same mounting face. Each station operation area is correspondingly matched with the wheel disc placing position on the clamping rotary table; the conveying belt is arranged on the outer side of the feeding station or the discharging station in parallel. The feeding or discharging station, the locking plate mounting station, the blade mounting station and the locking plate locking station achieve station switching of a wheel disc through intermittent rotation of the clamping rotary table, and whole-procedure operation of an impeller is completed. The method is applied to the fields of blade feeding, locking plate mounting and blade press-fitting machining.

The invention relates to the technical field of mechanical presses, and discloses a large-stroke multi-connecting-rod mechanical press which comprises a box girder, an end cover is fixed to the upper end of the box girder through bolts, a motor base for installing a driving motor is arranged at the upper end of the end cover, the large-stroke multi-connecting-rod mechanical press further comprises a partition plate, and the side wall of the partition plate is rotationally connected with two shaft pins and two main shafts. The multi-connecting-rod transmission mechanisms are installed on the shaft walls of the two pin shafts, transmission of the multi-connecting-rod transmission mechanisms is achieved through rhombic structures, the rhombic structures are deformed by changing the vertical position of one hinge point, and the multi-connecting-rod transmission mechanisms drive the guide columns to enable the sliding blocks to move in a reciprocating mode to conduct punching work on workpieces. According to the large-stroke multi-connecting-rod mechanical press, the multi-connecting-rod mechanical press can be driven by a single main motor, meanwhile, the multi-stage speed-reducing and torque-increasing gear set is adopted for accurate driving, the control difficulty is lowered, the good lubricating performance is achieved, and the loss of mechanical parts of the press is reduced to the minimum.

The invention provides air spring shock absorber assembly dust cover assembling equipment and an assembling technology thereof.The air spring shock absorber assembly dust cover assembling equipment is vertical assembling equipment and comprises a mounting frame, a downward pressing mechanism, a jacking mechanism, a transverse push-pull mechanism and a caliper mechanism; traditional manual assembly is replaced by mechanical press fitting of the downward pressing mechanism and the jacking mechanism, and the problem of manual operation assembly of most air spring shock absorber assembly dust covers is solved. According to the air spring shock absorber assembly dust cover assembling device, the difficult assembling technology in air spring shock absorber assembly dust cover assembling is converted into mechanical assembling from manual assembling, the production efficiency is improved, the labor intensity is reduced, and meanwhile the problems that in the existing assembling process, the small end and the large end of a dust cover are difficult to assemble, and radial positioning of a belt rolling buckle is inaccurate are solved.

The utility model discloses a plane punching machine for abrasive disc production and machining, and belongs to the technical field of abrasive disc production and machining. Comprising an abrasive disc with a positioning hole and supporting legs, and the supporting legs are sequentially and fixedly connected with a supporting table and a supporting frame upwards; a hydraulic cylinder is arranged in the support frame; a supporting barrel is fixedly arranged on the supporting table and located under the hydraulic cylinder, and a rotating plate is arranged above the supporting barrel. The rotating plate is rotationally arranged relative to the supporting table, and two punching structures are arranged on the rotating plate. One group of blanking structures corresponds to the hydraulic cylinder, and a distance exists between each blanking structure and the working end of the hydraulic cylinder; a rotating structure is arranged in the supporting table and fixedly connected with the rotating plate. The two punching structures are arranged on the rotating plate, the rotating plate can be driven by the rotating structures to rotate, and therefore the punching structures can be replaced quickly to cope with punching of different abrasive discs, and the working efficiency is greatly improved.

The invention provides a beauty instrument, and relates to the technical field of beauty equipment. The beauty instrument comprises a main machine and a plurality of beauty heads, and at least one of the beauty heads is installed on the main machine in a replaceable mode and electrically connected with the main machine. Wherein the host comprises a connecting mechanism and a control mechanism, the connecting mechanism is electrically connected with the beautifying head, and the control mechanism is electrically connected with the connecting mechanism and used for controlling the beautifying head through the connecting mechanism; the control mechanism comprises a first conduction part and a second conduction part, and the first conduction part and the second conduction part are both arranged on the outer surface of the main machine and used for making contact with an external conductor and forming an access. According to the cosmetic instrument, the working mode switching mode is changed from a conventional mechanical pressing mode to a contact conduction mode, so that a user does not need to adopt the mechanical pressing mode when controlling the cosmetic instrument to switch the working mode, the user experience is improved, the damage probability of the control mechanism is reduced, and the service life of the cosmetic instrument is prolonged.

The application discloses a crank slider pressure holding device of a mechanical press, and relates to the technical field of mechanical presses, which comprises a machine body, a transmission part, a traction part and an opening and closing part. The machine body comprises a workbench and guide rods fixedly connected vertically on the workbench. Upper and lower pressure plates are connected to the guide rods in a vertical sliding mode. A driving part is arranged in the machine body. The output side of the driving part is connected to the upper pressure plate. The transmission part is connected between the machine body and the input side of the driving part to drive the upper and lower pressure plates to move vertically along the guide rods in an axial direction. The upper and lower pressure plates are arranged to apply pressure to a workpiece. The opening and closing part and the traction part are arranged to keep the lower pressure plate on the workpiece to continuously apply pressure when the upper pressure plate moves to the lowest point and returns, so as to prevent the pressure applied to the workpiece from weakening when the upper pressure plate moves away from the workpiece, thereby ensuring that the workpiece obtains sufficient pressing force in the forming process.

This invention relates to the field of vegetable oil technology, and more particularly to compound vegetable oil, its preparation method, and a compound oil press. The preparation method includes: raw material selection: selecting peanuts, camellia seeds, and rapeseed harvested in the current year, and removing shriveled, moldy, insect-damaged, and spoiled raw materials; raw material blending: mixing the obtained peanuts, camellia seeds, and rapeseed in a ratio of 100:(70-90):(10-30) to obtain a mixed raw material; and pressing: adding the mixed raw material to a press for mechanical pressing to obtain the compound vegetable oil. The compound vegetable oil prepared by this method has superior antioxidant properties and can maintain its quality for a longer period under normal storage conditions.