50results about How to "Improve edge quality" patented technology

The present invention relates to the technical field of soft-pack lithium battery production equipment, and in particular discloses an automatic secondary edge sealing feeding device for square soft-pack lithium batteries, comprising: a tray conveying plane for conveying battery trays; a tray output plane for outputting empty trays; a moving device; a material taking device; a flipping and clamping device; and a material swinging device; the end of the tray conveying plane is adjacent to the beginning of the tray output plane, the moving device is used to move the empty battery tray; the material taking device is arranged at the end close to the tray conveying plane, the battery in the tray is taken out by the material taking device, the flipping and clamping device is close to the material taking device, the battery correction is achieved by the flipping and clamping device, and a battery conveying plane is arranged outside the material swinging device, the battery conveying plane is used to convey a plurality of the battery clamps to the edge sealing station, the battery is effectively taken out and fed automatically, and the battery cells of the square soft-pack lithium batteries can be ensured to be straight, thereby ensuring the quality of subsequent secondary edge sealing.

The invention relates to a small projection lens. Comprising a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a diaphragm, a sixth lens with positive focal power and a seventh lens with negative focal power which are sequentially arranged along the direction of an optical axis, the small projection lens comprises a first lens with positive focal power, an eighth lens with positive focal power, a ninth lens with negative focal power, a tenth lens with positive focal power and an eleventh lens with positive focal power, and the effective focal length and the total length of the small projection lens are reasonably set. The camera lens is small in size, low in cost, small in projection ratio and large in aperture, can be matched with multiple DMD chips, provides enough projection brightness and size, is clear and sharp in projection picture, high in contrast ratio and accurate in color restoration, and meets strict use requirements under vehicle-mounted high and low temperature environment conditions at the same time.

The invention relates to a temperature control type automatic sealing machine and a control method thereof.The temperature control type automatic sealing machine comprises a transferring mechanism, a cleaning mechanism located above the transferring mechanism, a sealing mechanism and a control module electrically connected with the cleaning mechanism, and a film packaging part is provided with a temperature control heating part used for controlling the film temperature. The temperature control heating component is electrically connected with the control module, the cleaning mechanism comprises a cleaning frame arranged above the transferring mechanism in a covering mode and a fan electrically connected with the control module, an air outlet of the fan is aligned with a film packaging opening of the film packaging component, and the control module is used for controlling the fan to blow out dry hot air to books. And / or controlling the temperature control heating part to heat the thin film. The temperature control heating part is used for heating the thin film to ensure that the thin film is kept at a proper temperature when a book is packaged, so that the bonding effect of the hot melt adhesive is improved; and the fan blows dry hot air to the books, so that high-efficiency and high-quality book packaging and sealing can be kept at different environment temperatures.

The utility model discloses an automatic edge banding machine which comprises an edge banding machine base, a plurality of sets of conveying belts are arranged on the edge banding machine base, and groove positions used for fixing edge banding bags are arranged on the conveying belts. The edge sealing structure is arranged above the edge sealing machine base, and the edge sealing end of the edge sealing structure corresponds to the edge position of the edge sealing bag; and the control panel is arranged on one side of the edge sealing structure, and the control panel is connected with the conveying belt and the edge sealing structure to control the conveying belt and the edge sealing structure to work. Automatic control over the conveying belt and the edge sealing structure is achieved through the control panel, manual operation is greatly reduced, and working efficiency is improved.

The utility model discloses an edge grinding device for circuit board processing, including frame, be equipped with rotating platform and first motor for driving rotating platform rotation respectively on the frame, be equipped with positioning mechanism on rotating platform, be equipped with edge grinding mechanism and moving mechanism for driving edge grinding mechanism displacement respectively on one side of rotating platform of frame top, wherein, positioning mechanism includes six positioning assembly, adjusting member and vacuum chuck, six positioning assembly is uniformly distributed on rotating platform along circumference, adjusting member sets up on rotating platform can drive six positioning assembly synchronous relative rotating platform center and make close or far displacement, vacuum chuck sets up on rotating platform, positioning assembly includes movable block and the positioning pin of elastic telescopic setting on movable block, and positioning pin lower extreme extends to rotating platform below and is equipped with fixed shaft, and positioning pin is elastically convex on movable block top initially, the arc top block of being equipped with correspondingly below edge grinding mechanism on the frame.

The invention discloses a large-target surface high-low temperature confocal ADAS optical device, which includes, starting from the object side, the following sequence: a first lens with negative focal power; a second lens with negative focal power; a third lens with positive focal power; a fourth lens with positive focal power; a fifth lens with negative focal power; a sixth lens with positive focal power; a seventh lens with positive focal power; an eighth lens with negative focal power; a ninth lens with positive focal power; a first bonded lens formed by bonding the second lens with negative focal power and the third lens with positive focal power; a second bonded lens formed by bonding the fifth lens with negative focal power and the sixth lens with positive focal power; a third bonded lens formed by bonding the seventh lens with positive focal power and the eighth lens with negative focal power; the lens adopts an 8G1GM structure. The lens structure is made compact by reasonably distributing the focal power, thereby greatly reducing the tolerance sensitivity and greatly improving the imaging quality.

The invention discloses a side slotting metal edge sealing process method. The side slotting metal edge sealing process method comprises the following steps that S1, an edge sealing file is preprocessed; s2, preparing materials; s3, manufacturing a metal sealing edge; s4, inspection is conducted after metal edge sealing, the edge sealing attractiveness is improved, the metal texture is achieved, attractiveness and elegance are achieved, and the high-end and high-grade effect is achieved; the universality of the edge sealing process is improved; the edge sealing process is not limited by scenes and can be used indoors and outdoors; the method is not influenced by weather and regions, and can still realize normal production even in northern areas with cold winter; the patterns are not limited, and metal edge sealing can be carried out no matter the patterns are conventional patterns or special-shaped patterns; the edge sealing quality is improved, the firmness of the aluminum profile metal edge sealing is high, and cracking does not exist; the wear resistance is good, and wear and scratch are prevented; manual operation is replaced by machine production, convenience and rapidness are achieved, the cost is extremely low, and mass production is easy.

The invention provides a hot-pressing edge sealing process for a composite film, and belongs to the technical field of composite films, the influence of different GF addition amounts on the mechanical property of the composite film is systematically explored through tests, so that the optimal GF addition proportion is determined, and a solid foundation is laid for optimization of subsequent processes. Thirdly, further starting from the three key parameters of the hot-pressing temperature, the hot-pressing pressure and the hot-pressing time, aiming at the straight-strip-shaped edge sealing shape and the sawtooth-shaped edge sealing shape, the optimal edge sealing process conditions of the straight-strip-shaped edge sealing shape and the sawtooth-shaped edge sealing shape are deeply explored and determined; the structure stability of the composite film is remarkably improved, the edge sealing quality of the composite film is greatly improved, then the rejection rate is effectively reduced, the production period is greatly shortened, and the production efficiency is remarkably improved. Diversified requirements of the market on composite film products are met, and powerful technical support and guarantee are provided for continuous development of new markets and new fields for enterprises.

The utility model discloses an edging device for stainless steel tableware processing, and relates to the technical field of stainless steel tableware processing, the edging device comprises a polishing box, an inner cavity of the polishing box is provided with an edging mechanism I, edging mechanisms II are arranged above the left side and the right side of the edging mechanism I, and a cleaning water storage tank is fixedly mounted on the right side of the polishing box; a through groove penetrating front and back is formed in the rear side of the grinding box, a clamping driving box is fixedly installed on the inner side of the through groove, a driving sliding groove penetrating to an inner cavity of the grinding box is formed in the front end of the clamping driving box, and a first servo motor is fixedly installed on the left side of the clamping driving box. An output shaft of the first servo motor is fixedly provided with a right-hand and left-hand threaded rod. According to the edging device for the stainless steel tableware, the right-hand and left-hand threaded rod, the movable plate, the first edging mechanism and the second edging mechanism are matched with one another, so that the stainless steel tableware does not need to be held by hands during edging, the edging stability of the tableware is guaranteed, and the edging quality of the stainless steel tableware is improved.

The embodiment of the invention provides a processing method of a glass panel for a touch screen and the touch screen. The processing method of the glass panel for the touch screen comprises the following steps: providing a glass substrate and an etching solution; the glass substrate comprises an opening area, and laser irradiation is carried out on the opening area of the glass substrate; the glass substrate is placed in the etching liquid to be soaked, the part, located in the hole opening area, of the glass substrate is etched away through the etching liquid, and the glass panel for the touch screen is obtained. According to the processing method of the glass panel for the touch screen and the touch screen provided by the embodiment of the invention, a traditional numerical control lathe physical cutting method is replaced by a chemical etching method, and higher precision and smaller feature size can be realized by chemical etching; the CNC cutting may cause micro-cracks or fragmentation on the edge of the hole, and the chemical etching can significantly reduce the micro-cracks on the edge of the hole due to the non-contact processing mode, thereby improving the strength and reliability of the glass.

This utility model belongs to the field of kitchenware manufacturing, specifically a sealing device for cast iron woks. It includes a main body with a movable module inside, a heating module above the movable module, a limiting module on the right side of the heating module, and a striking module on the right side of the limiting module. The striking module includes a fixed plate, a limiting block, an electric rotating shaft, an extension arm, a wear-resistant pad, a vibration motor, and a striking hammer. The limiting block is installed on the left side of the fixed plate, and an electric rotating shaft is located inside the limiting block. An extension arm is installed on the left side of the electric rotating shaft, and a wear-resistant pad is adhered to the end of the extension arm. This utility model provides more uniform force and a faster striking frequency when sealing the edge of the wok, effectively reducing the labor intensity of operators. It is adjustable and can seal woks of different sizes. It also has a heat insulation effect, effectively isolating heat and reducing safety hazards.

A laser cutting method for producing n trimmed sub-blanks from a master blank made of metallic material, where n is an integer strictly greater than 1, the laser cutting method comprising the following steps: - Op1 / Positioning the master blank on a cutting table, the cutting table comprising n strips arranged to move relative to each other in a transverse direction; - Op2 / Clamping at least a portion of the master blank to the cutting table; - Op3 / Cutting n undragged sub-blanks from the master blank in a longitudinal cutting direction using a laser source; - Op4 / Separating the n strips of the cutting table from each other in a transverse direction; - Op5 / Releasing the clamps; - Op6 / Clamping the n undragged sub-blanks to the n strips; - Op7 / Laser trimming the n undragged sub-blanks to form n trimmed sub-blanks; - Op8 / Releasing the clamps; - Op9 / Unloading the n trimmed sub-blanks from the cutting table.

The present application relates to the technical field of aluminum plate production, and discloses an automated production device and method for honeycomb aluminum plates, including a processing table with a fixed frame 1 installed on both sides of the top, a moving seat with an electric slide rail 1 installed inside, a chuck 1 fixed inside, a coating mechanism fixedly connected to one side of the outer wall, which is used to apply glue to the honeycomb core, a synchronization mechanism fixedly connected to one end of the coating mechanism, which performs seal trimming according to the glue coating route, and a conversion component installed on one side of the outer wall of the coating mechanism. The shape of the outer wall on one side of the seal can be matched with the outer wall of the honeycomb core of the honeycomb aluminum plate through the synchronization mechanism, and the edge shape information of the honeycomb core collected during the glue coating process is transmitted to the controller of the electric push rod and the electric slide rail 3, driving the laser machine to cut and trim the seal along the edge trajectory of the honeycomb core, effectively increasing the airtightness of the edge packaging of the honeycomb aluminum plate, and improving the stability and durability of the product.

This invention provides a composite board edge banding device and method, including a transmission and positioning mechanism, multiple compatible mechanisms, and multiple sealing mechanisms. The transmission and positioning mechanism includes a conveyor belt, an upper positioning component, and a lower positioning component. The upper and lower positioning components are respectively provided with relatively movable upper and lower suction components for adsorbing and fixing both sides of the board. The compatible mechanism includes a mounting beam extending along a first or second direction and surrounding the transmission and positioning mechanism. The sealing mechanism is correspondingly mounted on the compatible mechanism and includes an assembly frame, a tape carrier, a pressing component, and an edge banding component. The pressing component has movable pressing wheels, and the edge banding component has multiple edge banding wheels, each edge banding wheel including a pressing part and guide parts that contract towards the pressing part at both ends, which can adhere the edge of the tape to the board. The various mechanisms work together to achieve integrated transmission, positioning, sealing, and edge banding, improving edge banding efficiency and product qualification rate.

The utility model relates to the technical field of conveying belt edge sealing equipment, and discloses PU conveying belt edge sealing equipment which comprises a supporting table, a supporting shell is fixedly connected to the supporting table, a first air cylinder is fixedly connected to the top of the supporting shell, and an electric heating plate is installed on the first air cylinder. Inner positioning plates fixedly installed on the supporting table are arranged on the two sides of the supporting shell, a plurality of embedding grooves are formed in the surface of the supporting table, sliding plates are embedded in the embedding grooves in a sliding mode, pulling plates are fixedly connected to one ends of the sliding plates, threaded rods are connected to the upper portions of the pulling plates in a threaded mode, outer positioning plates are rotationally connected to one ends of the threaded rods, and locking rods are fixedly connected to the two sides of the pulling plates; the bottom of the supporting table is fixedly connected with two guide seats, the locking rods are in sliding connection with the guide seats, and the bottoms of the guide seats are in threaded connection with locking bolts; two second air cylinders are fixedly connected to the side wall of the supporting shell, and pressing plates are fixedly connected to the second air cylinders. The PU conveying belt edge sealing device can be used for positioning and edge sealing of PU conveying belts with different widths, the expandable supporting and protecting table can be matched with edge sealing of the wide PU conveying belts, and practicability is good.

The invention discloses an underwater optical system. The underwater optical system comprises a first lens group, a second lens group, a third lens group and an image sensor, the first lens group is embedded in the third lens group, the second lens group is arranged on one side of the third lens group, and the image sensor is arranged on one side, far away from the third lens group, of the second lens group; the field angle of the first lens group ranges from 0 degree to 40 degrees in the center, and the field angle of the third lens group ranges from 40 degrees to 100 degrees. Compared with the prior art, the underwater optical system has the advantages that the first lens group is embedded in the third lens group, so that the compact layout of devices of the underwater optical system is ensured, the structural strength of the underwater optical system is improved, the use efficiency of the underwater optical system is improved, the condition that a circular blind area exists in an imaging center area is avoided, the aberration of the system can be effectively corrected, and the imaging quality is improved. The edge image quality is improved, the imaging quality is improved, and the user experience is further improved.

The invention discloses an automatic loading and unloading system for optical lenses of a horizontal edge grinding machine and a horizontal edge grinding machine. The guide trough of the feeding device is arranged on a frame, and a long hole is arranged at the bottom and a plate outlet is arranged on the side wall. The plate is stacked in the guide trough. The pushing mechanism is arranged at the bottom of the guide trough and the feeding push rod extends into the long hole to push the plate to move. The vertical moving mechanism of the material taking device is fixed on the frame, the guide frame is fixed on the frame on one side of the moving end, one end of the rotating mechanism is connected to the moving end and is slidably connected to the guide frame, and the top of the rotating rod of the rotating mechanism is provided with a suction cup I connected to the vacuum system. The rotating base of the feeding and taking device is rotatably arranged on the frame and the rotating axis is parallel to the grinding spindle. One end of the mechanical arm is vertically fixedly connected to the rotating axis of the rotating base and the other end is provided with a two-finger clamp. The pushing and vertical moving mechanism, the rotating base and each control valve level switch are electrically connected to the controller. The invention has the characteristics of simple structure, high production efficiency, good stability, safety and reliability.

The application relates to the technical field of glass processing equipment, and discloses an adjustable edge breaking device based on a special glass production line, which comprises a support frame one, a conveying mechanism arranged between two cross beams of the support frame one, long conveying units at two ends of the conveying mechanism and short conveying units at the middle part, wherein the long conveying units and the short conveying units are both composed of transmission assemblies and multiple rolling assemblies, the two ends of the short conveying units are both connected with fixed boxes, and one side of the fixed box is provided with an edge breaking mechanism. Through linkage design of the oil cylinder one and the oil cylinder two, the jacking block and the pressing block are synchronously and reversely moved, the two sides of a glass crack are simultaneously stressed, the edge is uniformly broken, edge collapse and fragmentation are effectively avoided, the edge breaking position is accurately adjusted, the processing requirements of different specifications of glass are met, and the waste material is received by the telescopic collecting bag, so that the debris is prevented from scattering.

The application relates to an aluminum substrate die for synchronously cutting off waste edges of punched products, and belongs to the technical field of stamping dies. The die comprises an upper die assembly and a lower die assembly which are opposite to each other. The upper die assembly is provided with a female die, and a square strip-shaped punch pin is embedded and installed at the edge of the female die. The lower die assembly comprises a male die corresponding to the female die and a jump plate structure at the outer side, the jump plate is elastically connected with a lower die base through guide columns, the top surface of the jump plate is provided with an open single-edge cutting edge corresponding to the position of the punch pin of the upper die, and the cutting surface is perpendicular to the extension direction of the waste edge. According to the application, the square strip-shaped punch pin is integrated on the upper die, and the matched jump plate cutting edge structure is arranged on the lower die, so that the stamping forming of the aluminum substrate product body and the cutting off of the waste edge can be synchronously completed in the same stamping stroke. The additional manual waste edge breaking step or the secondary punching cutting link in the traditional process is eliminated, the production cycle is greatly shortened, the production continuity and the overall efficiency are improved, and the overall production yield is significantly improved.

The invention relates to a large-aperture projection lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged along the direction of an optical axis, and is characterized in that the first lens, the fourth lens, the fifth lens, the seventh lens and the eighth lens have positive focal power; the second lens, the third lens and the sixth lens have negative focal power, and the sixth lens and the seventh lens are doublet lenses and have positive focal power; by reasonably setting the focal length and the entrance pupil diameter of the lens, the lens has the characteristics of large aperture, small size and low cost, does not defocus under the environmental condition of large temperature difference, and is stable in working performance, high in projection quality and wide in application range.

The utility model discloses a continuous vacuum glass edge sealing device, which belongs to the field of vacuum glass processing and comprises a limiting frame, a conveying belt is rotatably mounted in the limiting frame, a plurality of turntables which are transversely distributed in an array are rotatably mounted at the upper end of the conveying belt, and vacuum glass substrates are placed at the upper ends of the turntables. According to the vacuum glass base material edge banding device, a plurality of rotary tables which are transversely distributed in an array mode are rotationally installed at the upper end of a conveying belt, vacuum glass base materials needing edge banding can be placed on the rotary tables, a fixing frame is fixedly installed at the upper end of a limiting frame, and a liftable fixing plate and a steering assembly are arranged at the bottom in the fixing frame; by controlling the steering assembly to move downwards to abut against the upper end of the hollow glass base material, the three vacuum glass base materials can be synchronously controlled to rotate, the three vacuum glass base materials can be synchronously subjected to edge sealing, through the arrangement of the structure, automatic continuous machining and feeding and discharging of the vacuum glass base materials can be facilitated, and the edge sealing speed of the vacuum glass base materials is increased.

The invention relates to the technical field of grinding devices, and discloses a high-precision self-adaptive boring cutter grinding device and a using method thereof.The high-precision self-adaptive boring cutter grinding device comprises a machine table, a mounting base is fixedly mounted on the upper surface of the machine table, a driving motor is fixedly mounted on the outer surface of the mounting base, and a grinding wheel is fixedly mounted at the output end of the driving motor; a rotating base is rotationally installed on the upper surface of the machine table, and a rotating platform is fixedly installed at the top end of the rotating base. The stepping motor drives the rotating base and the rotating platform to integrally swing in a reciprocating mode, so that the inner arc groove boring cutter installed on the rotating platform swings along with the rotating base, the cutter head of the inner arc groove boring cutter can do arc motion on the grinding face of the grinding wheel, and therefore the grinding wheel can grind the cutter head into an arc shape; the inner arc groove boring cutter does not need to be manually held for grinding operation, the large grinding error caused by unstable holding of the inner arc groove boring cutter during manual grinding operation is avoided, and the cutter edging quality is improved.

The invention provides a vehicle-mounted ADAS lens and a vehicle, and is based on the technical field of vehicle-mounted lenses, the vehicle-mounted ADAS lens is provided with an object side and an image side which are oppositely arranged along the direction of an optical axis, and the vehicle-mounted ADAS lens comprises a first lens group with positive focal power, a second lens group with positive focal power, a third lens group with positive focal power, a fourth lens group with positive focal power, a fifth lens group with positive focal power and a sixth lens group with negative focal power, which are sequentially arranged from the object side to the image side, all lenses in the first lens group and the second lens group are glass spherical lenses, the focal length of the first lens group is f11, the focal length of the second lens group is f22, the focal length of the vehicle-mounted ADAS lens is f, f11 / f is larger than 1.5 and smaller than 2.5, f22 / f is larger than 3 and smaller than 6.5, so that the field angle of the vehicle-mounted ADAS lens reaches 130 degrees or above, the F value of the number of apertures reaches 1.8, and the F value of the number of apertures reaches 1.8. And the resolution reaches three million pixels. According to the technical scheme provided by the invention, the focal power of each lens group and the material of the lens are reasonably set, so that the vehicle-mounted ADAS lens which is large in viewing angle, large in aperture, high in image quality and capable of clearly imaging in a weak light environment is realized.

The invention provides an ultra-short-focus projection lens and projection equipment, and belongs to the technical field of optical imaging. The ultra-short-focus projection lens comprises a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, a seventh lens with negative focal power, an eighth lens with positive focal power and a ninth lens with negative focal power. The system comprises a tenth lens with negative focal power, an eleventh lens with positive focal power, a twelfth lens with positive focal power, a thirteenth lens with positive focal power, a fourteenth lens with negative focal power, a fifteenth lens with negative focal power, a sixteenth lens with negative focal power and a concave reflector, therefore, the total optical length of the ultra-short-focus projection lens is controlled within 300mm, and the definition reaches 8K and above. According to the scheme, the ultra-short-focus projection lens which is small in size, high in resolution and good in athermalization is realized.

The invention belongs to the technical field of droplet volume detection, and particularly relates to a droplet volume estimation method and system based on machine vision, and the method comprises the steps: collecting a burette background image and a droplet critical point image through a camera; then obtaining a high-quality burette background binary image and a liquid drop critical point binary image through an image processing algorithm, then carrying out difference on the burette background binary image and the liquid drop critical point binary image to obtain an approximate liquid drop binary image, then analyzing boundary data of a side section image to obtain an approximate liquid drop section contour map, and finally obtaining a burette image. Establishing a three-dimensional model of the liquid drop; and finally, measuring and calculating the volume of the liquid drop based on the three-dimensional model. The method not only can replace manual measurement and calculation of the droplet volume and improve the measurement and calculation quality and the measurement and calculation precision, but also realizes the capture of the approximate droplet through binary image difference, and is low in photographing difficulty and high in efficiency because only the critical point image of the droplet which is about to drip from the burette needs to be collected.

The utility model relates to the technical field of coiling machines, in particular to a flattening roller device for a coiling machine, which comprises a base, a shaft seat, a rotating shaft, a compression roller and a power device, a shaft seat is arranged on the base and rotationally connected with a rotating shaft, a pressing roller is arranged at the other end, away from the shaft seat, of the rotating shaft, and the power device drives the rotating shaft to drive the pressing roller to rotate. The strip flattening device has a stable flattening effect on the strip, bending deformation is avoided, the edge quality of the strip entering the coiling expansion shaft is improved, the roller surface of the compression roller is always pressed on the surface of the strip, sliding and displacement are avoided, the scratching phenomenon is prevented, and the surface quality of the strip is improved.

The invention discloses a production method for improving the edge quality of high-magnetic-induction oriented silicon steel, and belongs to the technical field of oriented silicon steel production and manufacturing. The production method comprises the following steps: step 1, quantitatively extruding the edge part of a hot-rolled steel plate to obtain an extruded steel plate; the extrusion positions are the upper surface and the lower surface which are 0-15mm away from the width edge of the steel plate; and 2, normalizing annealing, cold rolling, decarburization annealing, nitriding treatment, high-temperature annealing and stretching flattening annealing are conducted on the extruded steel plate, and then the high-magnetic-induction oriented silicon steel can be obtained. The production method is low in cost and high in efficiency, and the edge quality of the high-magnetic-induction oriented silicon steel finished product steel plate can be effectively improved through the production method.

The invention relates to a miniaturized large-target-surface projection lens. Comprising a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power and a seventh lens with positive focal power which are sequentially arranged in the direction of an optical axis. An eighth lens with positive focal power, a ninth lens with negative focal power, a tenth lens with positive focal power, an eleventh lens with negative focal power, a twelfth lens with positive focal power and a thirteenth lens with positive focal power; the focal length and the total length of the miniaturized large-target-surface projection lens are reasonably set, so that the lens is small in size, high in resolution and large in image surface, meets the strict use requirements in the environment of-40 DEG C to 85 DEG C, and is high in mass production yield.

The utility model provides an edge sealing device for carton packaging. The edge sealing device for carton packaging comprises a supporting table, a first edge sealing box is fixedly connected to the top of the supporting table, a first lifting plate is movably connected to the interior of the first edge sealing box in a sleeved mode, a positioning shaft is movably connected to the interior of the first edge sealing box in a sleeved mode, and a first adhesive tape is movably connected to the exterior of the positioning shaft in a sleeved mode. According to the edge sealing device for carton packaging, the first adhesive tapes are arranged, when carton edge sealing is carried out, a carton is connected into the first edge sealing box in a sleeved mode, the two first adhesive tapes can bond and seal the edges of the two sides of the carton, and therefore when the carton is moved into the second edge sealing box, the edges of the two sides of the carton can be sealed. And the second adhesive tape can seal a gap in the middle of the carton, so that the effect of sealing the carton for multiple times in two directions is achieved, and the edge sealing quality of the carton is greatly improved.

The utility model belongs to the technical field of plate processing, and particularly relates to a plate trimming device which comprises a conveying frame, a plurality of edge grinding assemblies and a plurality of edge grinding assemblies. The adjusting structure is arranged above the conveying frame and used for driving the edge grinding assemblies to be relatively close to or away from each other; and the clamping structures are symmetrically arranged on the two sides of the edge grinding assembly and used for pushing the plates. And the effects that the plates of different specifications can be machined, and the production efficiency is improved are achieved.