63results about How to "Avoid fit" patented technology

The power transformer comprises a transformer body and a heat insulation plate arranged at the bottom of the transformer body, the transformer body comprises a base, a winding and an iron core, the two sides of the surface of the bottom end of the base are each provided with a plurality of terminal pins, the roots of the terminal pins are each provided with an abutting block, and the abutting blocks are connected with the winding and the iron core. A plurality of through holes are formed in the two sides of the surface of the top end of the heat insulation plate, the terminal pins are inserted into the through holes, the abutting block abuts against the surface of the top end of the heat insulation plate, a plurality of flow guide plates are arranged in the middle of the surface of the top end of the heat insulation plate, and ventilation grooves are formed between every two adjacent flow guide plates and the heat insulation plate. Strip-shaped grooves are formed in the flow guide plates, water absorption fiber cotton blocks are arranged in the strip-shaped grooves, and positioning plates are arranged at the four corners of the top end of the heat insulation plate. The heat dissipation effect of the power transformer is improved, meanwhile, the dehumidification function is achieved, the working reliability of the power transformer is guaranteed, and the service life of the power transformer is prolonged.

The invention relates to the technical field of steel structure welding, in particular to a green building steel structure welding positioning device which comprises a first positioning seat, a control panel is mounted on the right side surface of the first positioning seat, a first sliding groove is formed in the left side of the first positioning seat, and an operation table is arranged in the first sliding groove. A second positioning seat is arranged on the left side of the operation table, the structure of the second positioning seat is the same as that of the first positioning seat, a second sliding groove is formed in the back face of the second positioning seat, the first sliding groove and the second sliding groove are installed on the operation table in a sliding mode, and a side block is installed in the first positioning seat; and a first motor is mounted on the right side surface of the side block. According to the polishing device, the polishing disc is always attached to the two sets of steel pipes when the welding positions of the two sets of steel pipes are polished in a reciprocating mode through the polishing disc, so that chippings generated during polishing cannot fall into the steel pipes, the chippings in the steel pipes do not need to be independently cleaned subsequently, and the overall cleaning effect is good.

The present invention discloses a stamping and trimming device for the production of a steel structure back panel of a display screen, which belongs to the technical field of steel structure back panel processing, and comprises a workbench and a fixed frame arranged at the upper end of the workbench, the output end of the hydraulic cylinder penetrates the top surface of the fixed frame and is provided with an upper die seat, the upper end of the movable plate is fixed with a lower die seat, and two adsorption components for adsorbing workpieces are symmetrically arranged inside the lower die seat. The beneficial effects of the present invention are as follows: by setting structures such as a bending plate, a slider, a slide groove, a suction cup, a counterweight block, a first spring and a groove, during the process of the upper die seat and the lower die seat being molded together, the counterweight block is aligned with the groove, and then the workpiece and the suction cup move downward synchronously, so that the workpiece contacts the lower die seat, and prepares for the subsequent mold closing. During the demolding process of the upper die seat and the lower die seat, the counterweight block and the groove are misaligned, and then the suction cup and the workpiece are driven to move upward, which is convenient for the staff to take the workpiece away.

The utility model discloses logo detection equipment, and relates to the logo detection technical field, the logo detection equipment comprises a work bin, the outer surface of the work bin is slidingly sleeved with an inner cavity bending plate, a transverse cavity plate is arranged above the work bin, the bottom surface of the transverse cavity plate and the left and right sides of the work bin are fixedly inserted with inner pipes, and the lower ends of the two inner pipes are slidingly sleeved with outer pipes; the lower end of the outer pipe fixedly penetrates through the upper surface of an inner cavity bent plate, an air pump fixedly penetrates through the front face of the inner cavity bent plate, an inner cavity flat plate is arranged in the material box, a plurality of air suction heads communicated with the interior of the inner cavity flat plate are installed on the bottom face of the inner cavity flat plate, and through groove shafts are fixedly inserted into the left side face and the right side face of the inner cavity flat plate. The outer surfaces of the two through groove shafts are rotationally sleeved with hollow vertical plates communicating with the interiors of the through groove shafts. The logo suction device is reasonable in design structure, one logo can be sucked when the air suction head is in contact with the logo through the inner cavity flat plate and the air suction head in the material box, and then the phenomenon that multiple layers of logo are sucked when the air suction head moves upwards is avoided.

The utility model discloses a high-current-carrying fireproof bus for a computing center, which is characterized in that the high-current-carrying fireproof bus comprises a shell and a conducting bar, the shell is of a split structure and comprises a U-shaped bottom shell and a U-shaped cover plate, the conducting bar is installed in the bottom shell, the upper end face of the cover plate is provided with a first ventilation hole, and the two sides of the first ventilation hole are provided with installation holes; a movable blocking piece is arranged at the first ventilation hole and comprises an upper baffle and a lower baffle, the upper baffle and the lower baffle are connected through two connecting columns, the two connecting columns are movably arranged in the mounting holes in a penetrating mode, the upper baffle is located above the cover plate, and the lower baffle is located below the cover plate; the upper baffle and the lower baffle are provided with threaded holes used for installing the connecting column, the connecting column is sleeved with a spring, one end of the spring abuts against the upper end face of the base plate, the other end of the spring abuts against the lower end face of the cover plate, and the connecting column is sleeved with the base plate which is located above the lower baffle.

The invention relates to the technical field of lithium batteries, and discloses a fully-sealed lithium battery structure which comprises a cover plate, a battery cell and a shell, the battery cell is arranged in the shell, the cover plate is connected to the upper end of the shell, an insulating spacer is arranged between the lower end of the battery cell and the shell, a cylindrical hole is formed in the center of the battery cell, a first tab is connected to the inner wall of the battery cell, and a second tab is connected to the outer wall of the battery cell. The bottom of the shell is provided with an anti-explosion nick, the lower end of the shell is connected with a PTC short-circuit protection device, the lower end of the PTC short-circuit protection device is connected with a false cover, the edge of the cover plate and the upper end of the shell are provided with Z-shaped openings, the two Z-shaped openings are matched with each other, and the joint of the cover plate and the shell is sealed through laser welding. By adopting a cooperative structure of the cylindrical hole in the center of the battery cell, the insulating spacer with the annular bulge and the explosion-proof nick at the bottom of the shell, a smooth gas leakage channel is formed, high-pressure gas is ensured to be discharged in time, and the potential safety hazard that the gas leakage channel of the traditional lithium battery is easy to block and easily causes explosion is solved.

The invention discloses a filter structure and a glutinous rice pulp filter press, and belongs to the technical field of glutinous rice processing, the filter structure comprises a plurality of box type filter plates, each box type filter plate comprises a frame, a support frame and a filter bag, and the support frame comprises a frame inserted in the frame; a base plate is fixed in the frame, and a first channel is arranged at the joint of the base plate and the lower end of the frame; according to the invention, through the design of the base plate in the frame, not only is a firm support provided for the filter bags, but also the flow cavity is divided into two areas, so that the filtering area is increased, and the filtering efficiency is improved. The substrate and the first channel at the lower end of the frame guide the flow direction of the slurry, so that the slurry can be smoothly discharged from the flowing cavity, and the reduction of the filtering effect caused by slurry retention is avoided.

The utility model relates to the technical field of gloves, in particular to an emergency rescue glove which comprises a glove body, a palm protection frame is bonded on the outer surface of the glove body, a finger protection frame is bonded on the upper surface of the glove body, and a fixing module is arranged on the side surface of the palm protection frame. The fixing module comprises a connecting plate, an abutting seat and a limiting rotary knob, the connecting plate is hinged to the side surface of the palm protection frame, the abutting seat is connected to the side surface of the connecting plate in an embedded mode, and the limiting rotary knob is connected to the lower surface of the connecting plate in a threaded mode. The anti-smashing capacity of the glove body is improved, the anti-skidding protrusions are used for skidding prevention, the rubber pad makes contact with the palm of a patient, the palm protection frame can be tightly connected with the palm of the patient, the containing groove is used for containing the marking rope, the reflective ring enables the glove to be more striking, the glove is suitable for field rescue, and the functionality of the glove is improved.

The utility model discloses a clamp convenient for quickly measuring the flatness of a semiconductor lead frame radiating fin, which belongs to the technical field of lead frame manufacturing and comprises a base, a support table is arranged on the base, and a plurality of support contacts are arranged on the support table; a swingable pressing claw is further supported on the base, the pressing end of the pressing claw is used for pressing a chip loading area on the lead frame on the multiple supporting contacts, and a pressing spring is connected between the tail of the pressing claw and the base. According to the utility model, the slide area of the lead frame can be kept horizontal during the subsequent flatness measurement of the lead frame, so that the flatness measurement of the lead frame can be completed quickly, and the precision of the flatness measurement of the lead frame is ensured.

The invention discloses a trachea guiding device and a guiding method of a trachea diagnosis and treatment instrument. The trachea guiding device comprises a flexible catheter and an outer sleeve arranged on the flexible catheter in a sleeving mode, and a deformable bifurcated catheter is arranged in the middle section of the flexible catheter; and the bifurcated catheter is inclined and diverged outwards without external force, and deforms and is folded towards the flexible catheter side under the action of the outer sleeve. The front end of the flexible catheter is provided with a conical guide-in part facilitating guide-in, the rear end of the flexible catheter is provided with a first end cap facilitating hand holding, and the flexible catheter is sleeved with the first end cap. A second end cap is arranged at the end, close to the first end cap, of the sleeve. The problems that an existing trachea operation and trachea diagnosis and treatment instrument cannot enter the trachea conveniently, and the operation difficulty is large are solved, and the device can be widely applied to the technical field of medical instruments.

The present invention relates to the technical field of medical waste treatment, and specifically to a medical detection waste disinfection and harmless treatment device, comprising a recycling device body and a controller, the recycling device body comprising a box body and a recycling box, a crushing component and a cleaning component are installed in the box body, the crushing component is installed above the cleaning component, an electromagnetic coil is installed between the crushing component and the cleaning component, a conveyor belt is installed at the bottom of the cleaning component, the other end of the conveyor belt is connected to the recycling box, a distinguishing component is installed inside the recycling box, multiple groups of feed ports and multiple groups of exhaust ports are opened above the box body, multiple groups of nozzles are installed on the side of the box body, a deceleration component is installed inside the crushing component, the deceleration component cooperates with the exhaust port, and the deceleration component can slowly discharge steam, so that the device can distinguish and recycle medical waste and disinfect medical waste.

The utility model relates to the technical field of defective casting recovery, in particular to a classifying device for defective casting screening, which comprises a box body, a feeding port arranged on the left upper portion of the box body, a conveying device A arranged on the lower portion of the feeding port, and a cleaning assembly fixed on the inner wall of the box body on the upper portion of the conveying device A. A filter plate A inclining towards the inner side is arranged on the inner wall of the box body at the discharging end of the conveying device A. A discharging plate A inclining towards the outer side is arranged on the inner wall of the box body at the lower portion of the filter plate A. A conveying device B is arranged at the discharging end of the filter plate A. A filter plate B is fixed to the box body at the discharging end of the conveying device B. A discharging plate B is fixed to the box body at the lower portion of the filter plate B. A conveying device C is arranged at the discharging end of the filter plate B. A filter plate C is fixed to the position, at the discharging end of the conveying device C, of the box body. A discharging plate C is fixed to the position, below the filter plate C, of the box body. The cleaning assembly is arranged to clean the surface layer of the defective casting, returned materials are classified through the three filter plates, and the use effect is good.

The polishing machine comprises a polishing box, a vertical plate is installed on the top of the polishing box, a cylinder is installed, a worker firstly grabs the cylinder to move in the direction away from the vertical plate, the cylinder moves along the outer side of a square rod, the cylinder drives a square plate to move through a connecting plate, and the square plate is driven by the connecting plate to move. The square plate drives the rotating ring and the glove to move through the round hole, the inner wall of the side where the cylinder is moved to is in contact with the round plate, then a hand penetrates through the inner side of the rotating ring to enter the inner side of the glove, the glove is attached to the outer side of the hand, the hand sleeved with the glove grasps an external false tooth, the hand moves towards the supporting plate, and then the false tooth is clamped. And the glove on the outer side of the hand drives the rotating ring to move, the rotating ring drives the square plate to move to make contact with one side of the polishing box, then polishing machining is conducted, machined powder can be splashed to the surface of the glove, the powder is prevented from being splashed to the surface of the hand, and functionality is improved.

The utility model relates to the technical field of cell biology, in particular to a cell culture bag which comprises a bag body and at least one connector assembly. The connector assembly comprises a liquid discharging pipe and at least two supporting rods supporting the inner wall of the bag body, one end of the liquid discharging pipe is communicated with the bag body, the supporting rods are connected to the end, located in the bag body, of the liquid discharging pipe, and the supporting rods are arranged in the axis direction of the liquid discharging pipe. A liquid discharging gap is formed between every two adjacent supporting rods; the packaging bag has the effect of improving liquid outlet blockage caused by bag body attachment.

The utility model discloses a drainage device, and relates to the technical field of medical instruments for hepatobiliary surgery, in particular to a drainage device which comprises a hose, an unblocking component and a spring, the aperture of the spring is larger than the outer diameter of the hose, and the spring is arranged on the outer side wall of the hose in a sleeved mode. The spring is arranged on the outer side wall of the hose in a sleeving mode, the hose is externally supported through the spring, due to the fact that the spring has certain elasticity and rigidity, the spring can straighten the hose in time and prevent the hose from being excessively bent, the hose wall of the hose is prevented from being attached, a flow channel in the hose is prevented from being blocked or narrowed, and therefore the purpose of normal drainage is achieved. When a flow channel is blocked by viscous materials in the hose, the sliding blockage clearing component is pressed to slide in the length direction of the hose, the blockage clearing component extrudes the hose in the sliding process, and therefore the blocking materials in the hose are extruded and driven out, and the purpose of clearing away the viscous blocking materials in the hose is achieved.

The absorption product with the bubble cavities comprises an absorption area, a front waist area and a rear waist area, the front waist area and the rear waist area are arranged at the ends of the absorption area, the absorption area comprises a surface layer, a bottom layer and an absorption core body, and the bottom layer is formed by clamping elastic spandex filaments between a first bottom layer and a second bottom layer. Wherein at least one of the first bottom layer and the second bottom layer is of a composite structure, the composite structure is composed of a low-gram-weight bonding layer and a high-gram-weight foaming layer, the foaming layer and the bonding layer are discontinuously compounded to form a bubble cavity, and the bubble cavity can effectively reduce friction between the waistline structure and a human body, so that the waistline structure is more comfortable to wear. A gap between every two adjacent bubble cavities can play a role in ventilation, the waistline is prevented from being completely attached to the human body, the comfort during use is improved, the end faces of the two sides of the bonding layer are compounded with the bubble layer and the second bottom layer respectively, and the hard touch feeling when the human body makes contact with the bonding layer is effectively relieved.

The utility model relates to the technical field of casting machines, in particular to a slag stopping device of a casting machine, which comprises a base, a casting mechanism is mounted on the upper surface of the base, the casting mechanism comprises a first support, the first support is mounted on the upper surface of the base, a protection mechanism is mounted on the surface of the first support, and the protection mechanism comprises an electric telescopic rod. One end of the electric telescopic rod is fixedly connected with the surface of the first support, the tail end of the electric telescopic rod is fixedly connected with a first baffle, a third groove is formed in the surface of the first baffle, a spring is fixedly connected into the third groove, the tail end of the spring is fixedly connected with a second baffle, and an inclined groove is fixedly connected to the inner wall of the second baffle. According to the utility model, the second baffle plate is stressed through the contact between the chute and the surfaces of the casting machine body and the mold, the second baffle plate is tightly attached to the surfaces of the casting machine body and the mold by using the spring, and the first baffle plate and the second baffle plate jointly surround the pouring gate, so that the flying slag is prevented.

This invention relates to a rapid clothes drying device based on hot air circulation and its working method, belonging to the technical field of drying equipment. It includes a shell, with a vibration unit installed inside the shell, and an air circulation drying unit hung on the side wall of the shell. Clothes are hung on the vibration unit, and the air circulation drying unit draws in air from inside the shell, dries and heats it, and then blows it into the shell from the top. The air circulation drying unit consists of a heating chamber with evenly distributed air outlets on its bottom surface, located above the vibration unit. A fan is installed on the top of the heating chamber, and an air supply pipe is installed on the top of the fan. A drying unit is installed on the air inlet side of the air supply pipe, with its air inlet connected to the inside of the shell and its air outlet connected to the air supply pipe. This invention vibrates the clothes on the hanger, preventing them from sticking together and increasing the drying area. The vibration accelerates the removal of moisture from the clothes. The drying unit on the air supply pipe ensures that the air is dry during the drying process, guaranteeing efficient drying of the clothes.

The utility model discloses a high-precision RF direct-current power supply structure convenient to install and align, which comprises a structure main body, an RF direct-current power supply is arranged in the structure main body, fixing holes are formed in the two sides of the upper end and the lower end of the structure main body, and sliding cavities are formed in the two sides of the upper end and the lower end in the structure main body. Sliding rods are arranged in the sliding cavities in a sliding mode, one ends of the sliding rods extend out of the sliding cavities, L-shaped plates are arranged on the two sides of the structure body, and the L-shaped plates are connected with the ends, located outside the sliding cavities, of the sliding rods. According to the high-precision RF direct-current power supply structure convenient to mount and align, manual alignment is not needed, it can be well guaranteed that the mounting position of the RF direct-current power supply is centered, the mounting precision is improved, meanwhile, the fixing effect on the RF direct-current power supply can be improved, and the RF direct-current power supply is prevented from falling off.

This utility model discloses an anti-collision device for PCB board processing, comprising: a base with a mounting groove on the base and a slot on one side of the mounting groove; a tray detachably connected to the mounting groove and having a placement slot for placing products; and a cover plate rotatably connected to the base, having a locking block that engages with the slot when the cover plate is opened, and having a through hole. Compared to existing technologies, this utility model solves the problem of PCB board damage caused by improper placement during manual separation.

The utility model relates to a technology field of die -bonding adhesive thickness detection, disclose a kind of die -bonding adhesive thickness detection fixture, including fixed platform, the top of the fixed platform is fixedly connected with fixed frame, the top of the fixed platform is provided with placement assembly, the upper end of the placement assembly is provided with white light interference thickness sensor, the inside of the fixed frame is provided with adjusting assembly, the top of the fixed frame is fixedly connected with data acquisition card, the top of the fixed frame is fixedly connected with computer processing equipment, the placement assembly includes placement table, the bottom four corners of the placement table is fixedly connected with support column, the middle part of the support column is provided with through slot, limit slot is set in the both sides of the through slot, the inside of the through slot is provided with lifting plate The utility model is through starting electric push rod, the output end of electric push rod promotes lifting plate to move upwards, lifts die -bonding adhesive, avoids die -bonding adhesive to be attached in the surface of placement table, it is convenient to quickly take down die -bonding adhesive, to improve detection efficiency.

The embodiment of the invention relates to a medical instrument, in particular to an oral cavity tractor and an oral cavity traction device, and the oral cavity tractor comprises a lip baffle and a supporting arm; wherein in the first preset axis direction, the lip shield is provided with two opposite side parts, a head end and a tail end, the head end and the tail end are connected with the two side parts, and the whole lip shield bends and extends in the direction from the head end to the tail end to form a hook-shaped structure capable of wrapping the upper lip or the lower lip; in the second preset axis direction, the supporting arm is provided with a head part and a tail part opposite to the head part, and the head part of the supporting arm is further connected with the lip baffle; in the first preset axis direction, the two side portions of the lip block can move relative to each other, so that the lip block can extend or retract in the first preset axis direction. Compared with the prior art, medical staff can change the length of the lip shield according to the lengths of the upper lip and the lower lip of a patient so as to ensure that the lip shield can completely wrap the upper lip or the lower lip, and therefore the imaging quality of the final upper dentition and the final lower dentition can be improved.

The utility model belongs to the coiled material cutting technical field especially relates to a coiled material laser cutting machine with waste discharge device of close connection, including cutting table and laser cutting machine body, the front side of cutting table is provided with two groups of connecting rods, the outside of connecting rod is detachably installed with the roll material cylinder, through the first servo motor drive roll material cylinder stable feeding in close connection mechanism, two groups of second servo motor drive the opposite steering close -contact roll pair -toward extrusion, realize two groups of coiled material close contact, avoid the deviation and low efficiency of manual close -contact, lay the high quality foundation for subsequent cutting, the third servo motor drive waste discharge roll to convey waste material in waste discharge mechanism, simultaneously drive the cam rotation with the belt pulley drive, make the jib periodic up and down motion to separate finished product and waste material, ensure the separation continuity, avoid waste material residue, after the collection groove of collection mechanism receives finished product, the inclined discharge gate can utilize gravity to let finished product automatic sliding, realize the centralized collection, reduce the manpower investment.

The invention belongs to the technical field of concrete testing, and particularly relates to a concrete impermeability test device for hydraulic engineering quality detection, the concrete impermeability test device comprises a rack, a plurality of groups of placing parts and a pressurizing part, test pieces are placed in the placing parts, the placing parts are detachably mounted on the rack, and the pressurizing part is detachably mounted on the rack; a plurality of supporting columns of the supporting assembly are evenly distributed on the rack, stable supporting is formed on the press-fitting assembly, and a horizontal plate is prevented from inclining and shaking in the press-fitting process. The position of the horizontal plate can be firmly limited through cooperation of the lead screw and the lead screw nut, part displacement during press fitting is prevented, the structural stability in the test operation process is guaranteed, and potential safety hazards are reduced.

The invention relates to a fixing clamp for drilling and tapping machine machining, and belongs to the technical field of drilling and tapping machine machining. The fixing clamp for drilling and tapping machine machining comprises a mounting base, a plurality of mounting grooves are formed in the outer side of the mounting base, fixing bases are movably arranged on the inner sides of the mounting grooves, and gaps exist between the fixing bases and the mounting grooves; the two ends of the fixing base are fixed into the mounting grooves through buffer mechanisms, a plurality of fixing grooves are formed in the upper side of the fixing base, and a plurality of positioning mechanisms for fixing workpieces into the fixing grooves are rotationally arranged on the inner side of the fixing base. On one hand, the situation that the screw tap is attached to the inner hole wall of the workpiece for a long time is avoided, the screw tap is prevented from generating much cutting heat, the service life of the screw tap is prolonged, the positioning mechanism can fix the workpiece on the inner sides of the fixing grooves at the same time, and the workpiece fixing efficiency is improved.

The utility model relates to labeler technical field and disclose a kind of efficient labeler, including labeler body, and the upper end side of labeler body is equipped with peeling assembly and label assembly, and the label assembly includes fixed plate, and the fixed plate is fixedly connected in the upper end side of labeler body, and the upper end of fixed plate is equipped with hydraulic cylinder, and multiple movable tubes are formed multiple-hole type adsorption structure by being set in suction seat bottom portion, when negative pressure connector is connected with external vacuum pump, negative pressure is formed in sealed cavity, and multiple movable tubes synchronous generation adsorption force, so that it can form uniform adsorption force to label of different size, shape, avoid label deviation or drop due to local adsorption force deficiency, while positive pressure connector can be connected into positive pressure after label is pasted, so that movable tube releases label quickly, reduce label residual adsorption force and cause label position deviation, improve label efficiency and accuracy.

The invention discloses a raw material conveying equipment for electrode paste production and processing, which relates to the technical field of electrode paste production, and comprises two support frames, wherein support plates are fixedly installed at the bottoms of the two support frames, rollers are symmetrically rotatably connected between the two support frames, and the outer rotations of the two rollers are connected to conveyor belts, and a driving motor is fixedly installed on one side of one support frame, and the output end of the driving motor passes through the support frame and is fixedly connected to the rollers on one side, and further comprises: a fixed frame, which is fixedly installed at the middle of the tops of the two support frames; so that the electrode paste can be conveyed and cooled by spraying water, and the electrode paste can be moved and turned over by the rotation of the conveyor belt during the conveying process, so that one side of the electrode paste is prevented from always being in contact with the conveyor belt, so that one side of the electrode paste can be in contact with the cooling water, so that the cooling effect and cooling quality of the electrode paste can be improved, and the defective rate of the electrode paste production can be reduced.

The utility model relates to the field of freshness protection bag production, in particular to a blow molding air tap for freshness protection bags. The utility model provides a blow molding air tap for a freshness protection bag. The utility model discloses a blow molding air tap for a freshness protection bag. The blow molding air tap comprises a mounting table, mounting stand columns, air outlet pieces, opening plates, springs, air pipes and air bags, in the process of pulling up the fresh-keeping bag, the fresh-keeping bag can have a trend of being opened in advance by means of the cooperation of the opening plate and the spring, so that an operator can pull up the fresh-keeping bag more conveniently, the fresh-keeping bag is prevented from being attached to the device, and meanwhile, in the blow molding process, by means of slow expansion of the air bag, the fresh-keeping bag is prevented from being broken down. Therefore, the freshness protection package can be kept open, and the molding efficiency is improved.

The utility model relates to the technical field of steel ruler calibration, in particular to a calibration device for a steel ruler, which is characterized in that a movable camera mechanism is mounted at the top end of a processing table, and a controller is mounted on the front side of the processing table; a sliding groove is formed in the top face of the machining table. A verification structure is installed on the top face of the machining table and comprises a standard ruler, the standard ruler is fixedly installed at the rear end of the top face of the machining table, an L-shaped transparent plate is installed on the front side of the standard ruler, a sliding plate is installed at the right end of the front side of the L-shaped transparent plate, and an abutting plate is fixedly connected to the top face of the sliding plate. A threaded rod is movably mounted in the sliding groove through a bearing, and a motor is fixedly mounted on the right side wall of the machining table. According to the utility model, the standard ruler and the to-be-calibrated ruler are horizontally arranged, so that the scales on the two groups of rulers can be conveniently and intuitively calibrated by moving the camera mechanism, and the efficiency and the precision are improved.