226results about How to "Reduce process" patented technology

The invention discloses a fuming furnace smelting process control method and system, a terminal and a readable storage medium. The method comprises the following steps: constructing a normal association relationship among initial multi-source data in a stable operation state of a fuming furnace; collecting current multi-source data of the fuming furnace in a current operation state; identifying association deviation according to the normal association relationship and the current multi-source data; identifying an abnormal state according to the correlation deviation; and according to the abnormal state, the smelting area is finely controlled. According to the control method and system for the smelting process of the fuming furnace, the normal incidence relation among the multi-source data is constructed, the abnormal state can be recognized more accurately, then the smelting area is finely controlled, and therefore the control accuracy of the smelting process can be improved, unnecessary energy consumption and process fluctuation can be reduced, and the smelting process can be controlled more accurately. And meanwhile, local abnormity can be rapidly and effectively eliminated, further deterioration of the local abnormity is prevented, and automatic control over the smelting process of the fuming furnace can be achieved.

The invention relates to the technical field of semiconductor devices, and discloses a wide bandgap power semiconductor device and a preparation method thereof. The method comprises: providing a substrate layer of a first conductivity type; forming a first doped region which is deep into the substrate layer and comprises a plurality of doped layers which are sequentially nested from outside to inside, wherein the doping concentrations of the plurality of doped layers are sequentially increased from outside to inside; forming a second doped region in the doped layer on the innermost side of the first doped region; forming an isolation layer on the first surface; forming a control electrode on the isolation layer; forming a first electrode on the first surface; a second electrode is formed on the second surface of the substrate layer. According to the invention, the first doped region which is located between the substrate layer and the second doped region and has the doping concentration gradually increased from outside to inside is formed through a mode of multiple times of ion implantation, so that transverse electric field constraint is constructed, transverse depletion of a channel region and a short channel effect under the condition of large voltage are inhibited, the channel width is reduced, and the performance of the device is improved. And the device performance and reliability are improved.

This utility model relates to the field of agricultural machinery and equipment technology, specifically a paddy field wheel, including a main shaft with multiple mounting discs. Blades are detachably assembled between every two adjacent mounting discs. Each mounting disc has multiple mounting positions for positioning the blades, and each blade has a first mounting part and a second mounting part. When the blades are assembled onto the mounting discs, the first and second mounting parts are respectively connected to the end faces of two adjacent mounting discs. This paddy field wheel has a simple overall structure, and the blades are detachably screwed together, allowing for batch processing and transportation, improving transportation efficiency while reducing processing and welding costs, and facilitating subsequent blade upgrades and replacements. The assembly of the first and second mounting parts with the mounting discs simplifies conventional blade components such as bracing plates and reinforcing bars, reduces welding processes and costs, improves installation efficiency, and overall reduces the processing, transportation, and usage costs of the paddy field wheel, while also improving its tillage efficiency.

The utility model discloses a kind of automatic water gap cutting device, the device relates to precision machining technical field, the device includes cutting table and cutting unit installed on cutting table, workpiece clamping adjusting unit is provided on the cutting table, two-dimensional walking unit is provided between the workpiece clamping adjusting unit and cutting table, by inserting workpiece between first rotating holder and second rotating holder, starting clamping cylinder, workpiece die is clamped using two groups of clamping groove, rotating servo rotates workpiece to preset angle, then the horizontal direction position adjustment of workpiece is driven by X-axis motor and Y-axis motor, so that the whole water gap is directly to cutting tool, then unilateral cutting is carried out, when one side cutting is completed, the whole workpiece is rotated 180 degrees by rotating servo, then the other side water gap cutting is carried out, so that multi-surface water gap cutting can be carried out once installation positioning, more convenient operation, less process, higher efficiency.

The utility model relates to the field of mechanism sand processing especially mechanism sand drying and humidifying equipment, in view of the inconvenient up and down material turning and the lack of humidifying function problem in the prior art mechanism sand drying, present the following scheme, it includes drying jar, the drying jar top installs the feed hopper, and the drying jar outer periphery installs the hot blast machine for conveying hot air to its inside, install in the drying jar inside: screening mechanism, it includes the screen cloth installed in the drying jar inside, installs the material scraping subassembly in the drying jar top and installs the discharge pipe in the screen cloth bottom, the screen cloth top deviates the position of the feed hopper just below and is equipped with with the blanking mouth of discharge pipe intercommunication, the utility model not only can conveniently screen before drying mechanism sand, and also can conveniently turn the bottom layer material to the upper layer when drying, effectively improved the drying efficiency, and also have the humidifying function, and it is convenient to humidify according to the need.

The application provides a split-gate flash memory and a manufacturing method thereof. The memory comprises a semiconductor substrate, has an active region and an isolation structure, and part of the surface of the isolation structure is lower than the surface of the active region to form a groove; a coupling medium layer covers the top and sidewall of the active region; a floating gate is located on the surface of the coupling medium layer and surrounds the top and sidewall of the active region and does not completely fill the groove; an inter-electrode medium layer is located on the surface of the floating gate; a control gate is located on the surface of the inter-electrode medium layer and fills the remaining part of the groove; a word line is located on the sidewall of the floating gate and the control gate; and a tunneling medium layer is located between the word line and the floating gate, the control gate and the substrate. The application enhances the control force by three-dimensionally surrounding the channel with the floating gate, reduces the risk of punch-through, increases the coupling rate by filling the groove with the control gate, reduces the operating voltage, and improves the reliability of the device.

The utility model relates to the technical field of electronic equipment accessories, in particular to a support. The support, the first ball head and the locking assembly are detachably connected, a user can easily disassemble or replace the ball head according to needs, maintenance and replacement of equipment are facilitated, and meanwhile the support is allowed to adapt to equipment of different sizes or weights. The first ball head adopts the design of a rigid lining and an elastic layer wrapping the outer side of the lining, the elastic layer can play a role in buffering during collision or vibration, damage caused by falling or frequent adjustment is effectively reduced, detachable connection is achieved by penetrating bolts into the connecting holes, the mounting and dismounting processes are simplified, and the service life of the ball head is prolonged. The situation that the whole support is scrapped due to damage of the ball head is reduced, the service life of the support is prolonged, and the maintenance cost is reduced.

The utility model relates to coal quality detection technical field discloses a coal crushing device and coal quality detection device, including casing, screening subassembly, flow guide seat, grinding block and air heater. The casing is equipped with feed inlet and discharge gate. Screening subassembly divides the casing into intercommunicating first chamber and second chamber, the first chamber communicates with the feed inlet, and the second chamber communicates with the discharge gate. The flow guide seat is located in the downside of feed inlet. The grinding block is located in the flow guide seat, and the clearance between the peripheral wall of grinding block and the inner wall of flow guide seat, and the grinding block can rotate relative to the flow guide seat. The air heater is connected with the casing, and the air outlet of air heater is communicated to the second chamber. The coal is crushed through the grinding block, and the crushed coal is collected to the second chamber, and the coal in the second chamber is dried through the air heater, and the crushing and drying of coal are completed in the casing, the operation of manual sample transfer is reduced, the detection error is reduced, the process is saved, and the detection efficiency is improved.

The utility model provides a double-sided packaging structure. In the double-sided packaging structure, a middle plastic packaging structure comprises a substrate, the substrate is provided with a front surface and a back surface which are opposite to each other, and the back surface of the substrate is provided with a conductive column; the back electronic component is mounted on the back surface of the substrate; the resin film is attached to the back face of the substrate and at least wraps the side wall of the back electronic element and the side wall of the conductive column, and the surface, away from the substrate, of the resin film is flush with the end face, away from the substrate, of the conductive column. Therefore, the packaging process can be simplified, and the packaging process difficulty and cost can be reduced.

The utility model relates to the technical field of metal cabinets, in particular to an efficient and environment-friendly metal cabinet welding device which comprises a cabinet wall, first sliding rails are symmetrically arranged on the cabinet wall, a splicing seam is formed in the cabinet wall, an air blowing cylinder is arranged in the cabinet wall, and a welding frame used for limiting a welding gun is arranged on the cabinet wall. Spring shafts used for adjusting the air blowing cylinder are symmetrically arranged on the welding frame, and a collecting groove used for collecting welding slag is formed in the welding frame. Through the arrangement of the air blowing cylinder and the collecting tank, gas and disintegrating slag generated in the welding process of the welding gun on the cabinet wall can be reasonably and effectively collected, pollution gas is prevented from being concentrated in the cabinet body and affecting work of personnel, meanwhile, pollution to the environment caused by the fact that the gas floats out of the cabinet body is reduced, and the safety of the cabinet is improved. And the collecting groove and the leakage-proof baffle can effectively reduce the situation that disintegrating slag falls into the cabinet body, the procedure that workers clean the cabinet body in the later period is avoided, and therefore the welding cost of the cabinet is reduced, and the environmental protection property is improved.

The application provides a low dielectric constant film forming method, which is applied to the field of semiconductor technology. Specifically, in the low dielectric constant film forming method provided by the application, air or inert gas and other gases are fully blown into a silicon-containing precursor liquid source required for film formation in the form of micro-nano bubbles by using a micro-nano bubble generating device, so that a low dielectric constant film with a porous structure can be formed without using chemical pore-forming agents such as organic pore-forming agents; and in the low K film forming method provided by the application, micro-nano bubbles are introduced as pore-forming templates by blowing air in the film precursor liquid source, so that the porosity regulation difficulty of the formed low K film can be reduced while achieving the purposes of reducing the amount of chemicals used, reducing the process manufacturing cost and improving the process safety, and then the process steps and the tape-out cost are finally reduced.

The application provides a combined integrated sewage treatment equipment, a mounting method and a use method, and aims at the problems that the existing device cannot adapt to the treatment of various sewage, cannot be freely combined according to the needs of users, and the required power source is increased due to different processes. The application provides the following scheme, which comprises a filter box, a plurality of connecting boxes and a rectangular box. The filter box and the rectangular box are located above and below the plurality of connecting boxes, respectively. The plurality of connecting boxes are connected in sequence. The top of the filter box and the top of the connecting box are both provided with two symmetrical positioning grooves. In the application, the mixed components can quickly mix the impurities and the flocculating agent, and the mixed components can be collected in the collection box. The transmission assembly can fully utilize the power of the servo motor, and does not need an external power source, thereby reducing the combination difficulty, and the process can be increased or reduced according to the needs.

The utility model relates to a kind of speaker box wire outlet structure, comprising: loudspeaker;Silica gel cover, its sleeve is equipped in the outside of loudspeaker;Wire rod, one end is connected with loudspeaker, and the other end of wire rod is threaded through silica gel cover, the outer wall of wire rod and silica gel cover contact is wrapped with sponge, the sponge is clamped on silica gel cover, and sponge is used for balancing the air pressure between loudspeaker and silica gel cover inner and outer cavities.The utility model's speaker box wire outlet structure, wire rod is wrapped with sponge, wire outlet mode clamped in wire outlet position, both can fix wire rod, and can reduce the process of glue fixing wire rod, make assembly more simple and fast, and have the effect of deflation and balancing air pressure in speaker box, satisfy the structure requirement of customer while satisfying the sound quality demand.

This utility model discloses a welding fixture for a child seat bracket, characterized by: a fixture base and a fixture bottom plate, the fixture bottom plate being horizontally disposed on the top surface of the fixture base; the fixture bottom plate being provided with a lower fixed bracket welding station and a lower fixed wire welding station; the lower fixed bracket welding station including a first horizontal tube support seat, a second horizontal tube support seat, and a bracket positioning seat, the first and second horizontal tube support seats having a first toothed washer positioning part; the lower fixed wire welding station including a third horizontal tube support seat, a fourth horizontal tube support seat, and a wire positioning seat. The advantages of this utility model include: a simple fixture structure, high positioning accuracy, and the ability to simultaneously clamp and position various components of the child seat bracket, welding multiple parts at once, saving processes and improving welding efficiency.

This invention discloses a glass bottle conveying and packaging production line, relating to the field of glass bottle packaging technology. It includes a first conveyor belt, a turntable on one side of the first conveyor belt, several moving mechanisms circumferentially mounted on the turntable, and arc-shaped plates fixedly connected to the ends of the moving mechanisms. Several grooves are circumferentially formed on the sidewall of the turntable, with the arc-shaped plates located within the grooves. A disc is positioned below the turntable, with several supports circumferentially rotatably connected to its top surface. A cleaning mechanism is located on one side of the disc. A second conveyor belt is located on the side of the disc away from the first conveyor belt, and a platform is located on the side of the second conveyor belt away from the disc. A palletizer for neatly arranging glass bottles is mounted on the platform, and a robotic arm is located on one side of the platform. Suction cups are attached to the ends of the robotic arm for adsorbing glass bottles and placing them into packaging boxes. This invention achieves full automation of the glass bottle process from conveying, positioning, polishing to packaging. The overall process is simple, convenient, efficient, and space-saving, thus improving production efficiency.

The utility model provides a battery pack. The battery pack comprises a box body; the battery cell group module comprises a plurality of battery cell stacking bodies, a plurality of connecting beams and two side plate groups; the plurality of battery cell stacking bodies are arranged along a first direction, and each battery cell stacking body comprises a plurality of battery cells stacked along a second direction; a connecting beam is arranged between every two adjacent battery cell stacking bodies; the two side plate groups are located on the two sides, distributed in the second direction, of the battery cell stacking body, and the two side plate groups are connected through the connecting beam and clamp and fix the battery cell stacking body; wherein the side plate group is provided with a connecting structure, and the connecting structure is fixedly connected with the box body through a first fastener. According to the battery pack provided by the invention, the battery cell stack is clamped by the two side plate groups, so that the battery cell group modules can form a whole with a stable structure. The connecting structure on the side plate group is connected with the box body through the first fastener, so that the battery cell group module is directly fixed on the box body, the procedure of forming the battery cell into the battery module is omitted, and the energy density of the battery pack and the internal space utilization rate are favorably improved.

This application relates to a high-nickel cathode material and its preparation method, and a lithium-ion battery. The chemical formula of the high-nickel cathode material is Li. σ Ni a Co b Mn c M1 x M2 y M3 z O 2+α Wherein, 0.80<σ<1.20, a+b+c+x+y+z=1, 0.7<a<1.0, 0<b<0.05, 0<c<0.3, 0<x<0.3, 0<y<0.3, 0<z<0.3, 0<α<0.1, M1, M2, and M3 are each independently including at least one of Al, Co, Zr, Ti, Mg, Y, La, Sr, Ba, W, Mo, Nb, and Si, and M1, M2, and M3 are all different; the high-nickel cathode material includes a high-nickel material matrix and a coating layer. Cu-Kα rays are used to perform XRD measurements on the high-nickel material matrix and the high-nickel cathode material, respectively. The intensity of the (104) diffraction peak appearing in the diffraction angle range of 44-45° is recorded as I. b (High-nickel material matrix) and I c (High-nickel cathode material), the unit of diffraction peak intensity is counts, let the diffraction peak intensity difference P = I c -I b 0 < P < 1000. The high-nickel cathode material provided in this application has better high-temperature cycling performance and a low DC internal resistance growth rate.

This invention relates to the field of metal surface strengthening technology, specifically a method for in-situ generation of TiC-TiN ceramic materials using a titanium-containing substrate and an atmosphere-assisted high-energy beam. This method utilizes the titanium-containing substrate itself as a titanium source. Under a specific atmosphere, high-energy beam irradiation causes the Ti element in the substrate to react in-situ with C and N elements in the atmosphere, generating a TiC and / or TiN ceramic strengthening layer on the substrate surface. Specifically, the method includes: pretreating the titanium-containing substrate; placing it in a reaction chamber and introducing an auxiliary gas containing C and / or N; scanning and irradiating the substrate surface with a high-energy beam, controlling process parameters to allow Ti to react with C and N, generating a 0.5-1.2 mm thick metallurgically bonded strengthening layer. The advantages are: this invention eliminates the need for additional titanium powder or carbon powder, resulting in a simple and low-cost process; the strengthened layer exhibits high bonding strength with the substrate with no risk of detachment; and it significantly improves the surface hardness, wear resistance, and corrosion resistance of the substrate, making it widely applicable in military, aerospace, and marine equipment fields.

The utility model relates to the technical field of tunnel engineering seepage prevention, in particular to a tunnel bentonite seepage prevention structure. The anti-seepage structure comprises an open-cut tunnel anti-seepage structure and a new Austrian composite tunnel anti-seepage structure, the open-cut tunnel anti-seepage structure comprises an open-cut tunnel inverted arch bottom plate anti-seepage structure, an open-cut tunnel vertical wall anti-seepage structure and an open-cut tunnel vault anti-seepage structure. The novel Austrian-method composite tunnel anti-seepage structure comprises a novel Austrian-method tunnel inverted arch bottom plate anti-seepage structure, a novel Austrian-method tunnel vertical wall anti-seepage structure and a novel Austrian-method tunnel vault anti-seepage structure. According to the technical scheme, the problems that in the prior art, a waterproof roll or a waterproof plate cannot be tightly bonded with a base layer, large-area water mixing is caused, and water seepage, drainage, maintenance and management costs are increased are solved.

The utility model provides a battery pack, comprising: a box body comprising a plurality of side box plates, and the plurality of side box plates enclose to form an accommodating space; the battery cell group module is arranged in the accommodating space; the battery cell group module comprises a plurality of battery cell stacking bodies, a plurality of connecting beams and two side plate groups; the plurality of battery cell stacking bodies are arranged along a first direction, and each battery cell stacking body comprises a plurality of battery cells stacked along a second direction; connecting beams are arranged at the two ends, distributed in the first direction, of each battery cell stacking body; the two side plate groups are located on the two sides, distributed in the second direction, of the battery cell stacking body, and the two side plate groups are connected through the connecting beam and clamp the battery cell stacking body; and in the second direction, the distance between the two side plate sets is adjustable, so that the two side plate sets can be matched with the corresponding side box plates for limiting. In the battery pack provided by the invention, the side plate groups and the side box plates are matched for limiting, so that the material cost of the battery pack is reduced, and the assembly process of the battery pack is simplified.

This invention discloses a continuous crystallization apparatus and preparation method for ultrafine ammonium perchlorate. The apparatus consists of a mixing unit, an ultrasonic enhancement unit, a gas-liquid Taylor flow control unit, and a post-processing unit. The preparation method combines solution reaction crystallization, ultrasonic-enhanced mixing, and gas-liquid Taylor flow microscale control. It utilizes the confined space within the Taylor flow liquid section to control crystal growth, providing a uniform and stable growth environment for crystal growth. This effectively avoids the problem of wide crystal particle size distribution caused by uneven supersaturation and wide residence time distribution in traditional stirred crystallizers. It achieves continuous and controllable crystallization of ultrafine ammonium perchlorate, overcomes the defects of wide particle size distribution in traditional methods, and can prepare ultrafine ammonium perchlorate crystals with narrow particle size distribution and small average particle size. It has the advantages of simple and efficient process and high product quality.

The utility model discloses a roof steel truss assembly construction structure which comprises an installation platform, a lifting support and a steel truss body, the installation platform is provided with the lifting support, the lifting support is provided with a hydraulic lifter, and the hydraulic lifter is connected with the steel truss body through a steel strand body and a lifting appliance; the steel truss body comprises an upper-layer frame and a lower-layer frame, the lower-layer frame comprises jig frames, longitudinal main beams and connection secondary beams are arranged between the jig frames, and vertical web members connected with the upper-layer frame are arranged at the intersection points of the longitudinal main beams and the connection secondary beams. Temporary supporting rods matched with the lower-layer frame are arranged on the side walls of the vertical web members, and diagonal web members are arranged between the upper-layer frame and the lower-layer frame. The roof steel truss splicing construction structure is ingenious in design and practical in function, and effectively solves the problems that in traditional ground splicing, horizontal steel truss splicing is adopted, components need to be turned over, the cost of construction machinery is high, and the safety risk is large.

The invention relates to the technical field of conveying equipment, in particular to a conveying mechanism for an electronic piano bow rod automatic production line. The device comprises a main conveying machine body, a supporting frame is arranged on the main conveying machine body, a visual detector is arranged at the bottom of the supporting frame, an L-shaped base is arranged on a supporting leg at the tail of the main conveying machine body, a transposition driving seat is movably arranged on the L-shaped base, and the top of the transposition driving seat is in driving connection with a transferring assembly. The transfer assembly comprises a transposition base movably arranged at the top of the transposition driving base, a rotating support is movably arranged on the transposition base, and a transfer support is arranged at the top of the rotating support. By arranging the weighing sensor, the weight of the bow rod can be verified, the actual weight can be compared with the standard weight, secondary comparison can be carried out, preliminary detection of the product quality is achieved, unqualified products are prevented from entering the subsequent packaging link, the ex-factory qualified rate of the products is increased, the procedure of independent quality inspection is omitted, and the overall production efficiency is improved.

The utility model discloses a double-head 3D printing device which comprises a welding mechanism, a fixing frame and a first moving mechanism, the welding mechanism comprises a welding assembly and a robot, the welding assembly is arranged at the driving end of the robot, and the welding assembly is driven by the robot to conduct surfacing forming on welding flux; the fixing frame is arranged on one side of the welding mechanism, a rolling mechanism and a milling mechanism are arranged on the fixing frame, and the rolling mechanism is at least used for rolling welded workpieces so as to remove bubbles generated when the workpieces are welded; the milling mechanism is at least used for milling the welded workpiece; the first moving mechanism is at least used for driving a workpiece to move. The welding mechanism, the rolling mechanism and the milling mechanism are integrated together, the workpiece clamping frequency is reduced, on one hand, the working procedures are saved, and the machining efficiency is improved; and on the other hand, clamping errors caused by multiple times of clamping are reduced, and the workpiece machining precision is improved.

The utility model discloses a novel power line fixing plastic piece applied to fan, the novel power line fixing plastic piece applied to fan is Y, including upper clamping plate, lower clamping plate and connecting portion, the connecting portion connects the one end of upper clamping plate and the one end of lower clamping plate, be provided with the through installation hole for fixing the plastic piece in the rear end of fan motor on upper clamping plate and lower clamping plate, the connecting portion is provided with the fixing hole for fixing the plastic piece in fan reduction gearbox. The utility model skillfully utilizes the original structure of motor, only needs to be screwed by electric tool one screw, can effectively compress power cord, simultaneously, does not need manpower to clamp wire buckle, thereby reduces the labor intensity, reduces the procedure, improves work efficiency.

This invention discloses a strain of *Lactobacillus salivarius* CCFM1332 with multi-target regulatory effects and its application in periodontitis, belonging to the field of microbial technology. This invention yields a strain of *Lactobacillus salivarius* CCFM1332, which not only has vaginal immunomodulatory effects but also alleviates periodontitis. Specifically, it can: promote the secretion of antimicrobial peptides by vaginal epithelial cells VK2 / E6E7; reduce the periodontal probing depth in rats with periodontitis; reduce the number of pathogenic bacteria in the oral cavity of rats with periodontitis; downregulate the levels of serum inflammatory factors IL-1β, IL-6, and IL-17A; and reduce alveolar bone loss in rats with periodontitis, effectively alleviating alveolar bone resorption in rats.

The application relates to an optical structure, a semiconductor light-emitting device and a light-emitting apparatus. The optical structure comprises a light-transmitting piece and a truncation structure. The light-transmitting piece comprises a support part and a light-emitting part which are integrally arranged. The support part is hollowly arranged, and the light-emitting part encloses one end of the support part. The truncation structure is light-opaque and has a through hole. The outer side of the truncation structure corresponds to the inner side of the support part and laterally shields all the inner sides of the support part, and one end of the through hole corresponds to the light-emitting part. The optical structure integrates the truncation structure on the inner side of the support part of the light-transmitting piece. The truncation structure shields part of the lateral light rays and truncates the light emission of the light-emitting chip, thereby improving the cutoff of the light spot projected by the semiconductor light-emitting device, making the light spot edge clearer, weakening or basically eliminating the light-dark transition phenomenon of the light spot, and improving the light spot quality.

The application provides a green, low-carbon and rapid chromium-containing wastewater treatment method, which is improved on the basis of traditional biogas residue and ferrous sulfate treatment of chromium-containing wastewater, introduces short-term micro-aeration technology, and produces unexpected results, which not only treats the chromium-containing wastewater in a green and low-carbon way, but also greatly speeds up the reaction progress. In the process, a certain thickness of biogas residue sediment layer is formed in the biochemical reaction tank, then ferrous sulfate is added, then chromium-containing wastewater and biogas liquid are added, and after standing for a period of time, micro-aeration is carried out, which accelerates the biochemical reduction of Cr(VI) in the chromium-containing wastewater, promotes the activity of microorganisms, and saves resources.

The utility model relates to a large-span cross beam structure for laser groove cutting and scribing. The cross beam comprises a cross beam body, a first cross beam, a second cross beam and a plurality of longitudinal connecting frames, the first cross beam and the second cross beam are arranged in parallel, the longitudinal connecting frames are connected to the first cross beam and the second cross beam, and each of the first cross beam and the second cross beam comprises a hollow outer frame body and a hollow inner frame body located in the hollow outer frame body. A plurality of stiffening plates are arranged between the hollow outer frame body and the hollow inner frame body, cover plates are arranged between the end faces, in the length direction, of the hollow outer frame body and the hollow inner frame body, and a flat plate is laid between the upper ends of every two adjacent longitudinal connecting frames. The mounting bracket is provided with a linear guide rail and a rack; and the cutting and scribing mechanism comprises a laser groove cutting device, a scribing device and a movable driving mechanism. By optimizing the design of the cross beam, the operation precision and stability of equipment are effectively improved, the service life of the equipment is effectively prolonged, and the application requirements of large-span and high-precision machining scenes are met.

The application discloses a kind of food-grade silica gel triple-sealed high-precision bearings, it is related to bearing technical field, including bearing inner ring, bearing outer ring and the sealing ring of being installed in the inner side of bearing outer ring, the outer raceway both sides of bearing inner ring are equipped with one straight angle sealing groove with the cross section of 90 ° at two ends of shoulder or baffle respectively;The sealing ring includes metal framework and food-grade silica gel rubber coating integrally formed on the metal framework;The food-grade silica gel rubber coating extends towards the inner side of bearing inner ring and forms integrated three sealing lips, including two radial sealing lips with the contact of two radial side walls of the straight angle sealing groove, and one axial sealing lip with the contact of the axial bottom surface of the straight angle sealing groove.The application has the beneficial effects of material safety, no pollution, excellent sealing performance, high processing efficiency, the processing cycle is shortened by more than 40%, the leakage rate is reduced by more than 95%, and has wide application value.