1934results about "Hollow articles" patented technology

The invention discloses a full-circle needle beam trolley and method based on compressed air energy storage and relates to the technical field of tunnel construction, the full-circle needle beam trolley comprises a needle beam assembly, and supporting legs are arranged at the bottoms of the front end and the rear end of the needle beam assembly; the template assembly is arranged outside the needle beam assembly in the front-back direction of the needle beam assembly, and the template assembly at least comprises a first template group and a second template group; the beam frame assembly is arranged on the outer side of the needle beam assembly, and a supporting piece is arranged between the beam frame assembly and the template assembly so as to connect the beam frame assembly and the template assembly; guide mechanisms are arranged at the front end and the rear end of the needle beam assembly, so that the beam frame assembly drives the supporting piece and the template assembly to slide forwards and backwards along the needle beam assembly under the traction of the guide mechanisms. According to the embodiment of the invention, modular trolley, closed-loop sensing and automatic welding / grouting are realized, template positioning and welding seam and grouting quality are ensured, and leakage and reworking risks are reduced.

A later forming device for unscrewing covers is improved on the basis of an existing rack, a driving mechanism, a plurality of machining tools, a feeding mechanism and the like and further comprises a conveying mechanism which is driven by a main motor through a transmission mechanism and can operate intermittently, and the conveying mechanism comprises a plurality of conveying wheels and conveying belts wound on the conveying wheels. A plurality of through holes allowing unscrewing cover blanks to be located are sequentially formed in the conveying belt in the length direction, one section of the conveying belt can be laid on the table top, and the feeding hole and the machining holes in the table top correspond to the corresponding through holes in the section of the conveying belt in the stalling state in the vertical direction; and meanwhile, a discharging mechanism is further arranged and located below the table top, and the machined unscrewing cover finished product located on the conveying belt can be separated from the conveying belt. By the adoption of the structure, the accuracy and reliability of feeding and jacking operation rhythms can be guaranteed, intermittent operation can be achieved through the conveying belt, unscrewing cover blanks can be conveyed, and the whole structure is simple and easy to adjust, control and implement.

Described herein is an aluminium alloy multi-layered brazing sheet product for brazing in an inert-gas atmosphere without a flux that includes a core layer made of a 3xxx alloy that includes <0.2 wt. % Mg, and that provides a covering clad layer that includes 2-6 wt. % Si on one or both sides of said 3xxx alloy core layer and a Al—Si brazing clad layer that includes 7-13 wt. % Si positioned between the 3xxx alloy core layer and the covering clad layer, wherein the covering clad layer has a thickness X1 and the Al—Si brazing clad layer has a thickness X2 and wherein X2≥2X1. Also described herein is the use of an aluminium alloy multi-layered brazing sheet product in a flux-free controlled atmosphere brazing (CAB) operation to produce a heat exchanger apparatus.

The invention discloses a plastic hollow plate shaping and cooling device and method, and belongs to the technical field of plastic hollow plate processing.The plastic hollow plate shaping and cooling device comprises a processing table, and a vacuum adsorption control system and an air floatation supporting control system are arranged at the two ends in the processing table respectively; two cooling mold mechanisms used for cooling the plastic hollow plate are arranged at the two ends of the top of the machining table, and a main cooling mechanism and an auxiliary cooling mechanism which are used for cooling are arranged on each of two molds of each cooling mold mechanism. Uniform negative pressure is formed through the vacuum grooves and the vacuum holes in the upper mold, a plate is forced to be attached to the cavity so as to guarantee the section shape, the lower mold forms air film support through the air injection grooves and the air injection micropores, the downward pulling force of vacuum adsorption and the gravity of the plate are counteracted, sliding friction between the plate and the lower mold is converted into gas lubrication friction, and the service life of the plate is prolonged. The problems that in a traditional shaping process, due to the fact that single-side adsorption force is too large, the top of a plate protrudes, and a hollow cavity collapses are solved.

An assembly and method for preparing a pipe elbow for welding. The assembly has a cone clamping sleeve assembly adapted to be inserted into an end of the pipe elbow and a faceplate assembly removably affixed to the cone clamping sleeve assembly. The cone clamping sleeve assembly has a face at one end thereof. The face has at least one locating hole and at least one screw hole. The faceplate assembly has at least one locating pin receivable by the locating hole of the cone clamping sleeve assembly. The faceplate assembly has a captive screw threadedly received by the screw hole. The faceplate assembly has at least a pair of centering pins positioned at diametrically opposed locations on a faceplate. The centering pins are radially adjustable and adapted to bear against an inner diameter of the end of the elbow.

The invention provides a cylindrical part differential temperature thinning deep drawing die and a forming method, and relates to the technical field of thinning deep drawing. A female die is provided with a first sub-cavity with the horizontal diameter gradually reduced, so that the side wall of a cylindrical blank is gradually thinned in the axial direction in the deep drawing process, meanwhile, the female die and the cylindrical blank are integrally heated through a heating part, and the cylindrical blank is heated through a second sub-cavity with the horizontal diameter gradually reduced; the material fluidity is enhanced, plastic deformation is facilitated, the plasticity of the material is ensured, the bottom and the side wall of the barrel-shaped blank subjected to deep drawing are locally cooled through the cooling component, the flow stress is improved, the material strength is improved, excessive thinning is restrained, therefore, the wall thickness distribution of the barrel-shaped part is effectively controlled, and the defect risk in the forming process is reduced; and the size precision and the product quality of the cylindrical part are improved.

The invention belongs to the technical field of intelligent manufacturing of plastic packaging containers, and particularly discloses an intelligent blow molding and wall thickness closed-loop control system for PET plastic bottles, which integrates feedforward correction and closed-loop feedback, pre-corrects process parameters by acquiring characteristic parameters of raw materials, and generates point cloud data in combination with full-circumferential scanning of a non-contact three-dimensional optical measurement device. A partition three-dimensional model is constructed, and the wall thickness is accurately calculated; and based on the wall thickness deviation data, blow molding process parameters are dynamically adjusted through the mapping relation database, and a grading quality control strategy, a multivariable self-adaptive feedback mechanism and an online incremental learning mechanism are configured. The system realizes self-adaptive compensation under working conditions of raw material fluctuation, environmental disturbance and the like, improves wall thickness control precision and product consistency, reduces manual intervention, ensures high-speed continuous production, has self-learning and long-term stable regulation and control capabilities, and provides technical support for light-weight and high-precision forming of PET bottles.

A three-dimensional vapor chamber assembly structure includes a housing, heat pipes, a capillary member and a working fluid. The housing includes a first housing plate and a second housing plate, a cavity formed between the first and second housing plates, and through holes formed on the second housing plate. The heat pipe penetrates through the through holes and includes an open end having a flange formed thereon. The flange includes lateral and longitudinal surfaces. The lateral surface of the flange is attached to the second housing plate via a welding layer, and the longitudinal surface of the flange is attached to the second housing plate via a welding product. The capillary member is arranged inside the cavity and attached to the housing. The working fluid is arranged inside the cavity. Accordingly, a firm and robust vapor chamber structure capable of preventing welding material from entering the cavity is achieved.

The invention provides an anti-overheating expansion welding method for a tube plate and a heat exchange tube and a tube plate heat exchanger, and relates to the technical field of heat exchanger manufacturing, the method comprises the following steps: planning a welding sequence according to a plurality of to-be-welded tube plate joints on the tube plate, and enabling the continuous tube plate joints on the welding sequence to be non-adjacent in spatial positions; welding is conducted according to the welding sequence, and meanwhile a heat conduction tool is used for making contact with the tube plate connector to conduct heat away; after welding of the preset number of tube plate joints is completed every time, the weld joint temperature is detected and compared with a preset temperature threshold value, and if the weld joint temperature is smaller than or equal to the preset temperature threshold value, welding of the next set of tube plate joints continues; and if the weld joint temperature is larger than the preset temperature threshold value, welding is suspended, and cooling is conducted till the weld joint temperature falls back to be lower than or equal to the preset temperature threshold value. Through a collaborative mechanism of path dispersion, active heat conduction and closed-loop temperature control, the problems of welding seam overheating oxidation, structure deterioration and poor process stability caused by heat conduction difference of dissimilar metals and heat accumulation of batch welding are solved.

The invention relates to liquefied petroleum gas steel cylinder extrusion forming equipment, which relates to the technical field of liquefied petroleum gas steel cylinder manufacturing, and comprises a machine table mounted on the ground and a frame body connected with the upper end of the machine table. The stamping mechanism is arranged on the frame body, the positioning mechanism is arranged between the machine table and the frame body and used for fixing the plate, deviation is avoided in the stamping process, and therefore the forming precision and the symmetry of the end socket are improved to a certain degree. A pushing mechanism is further arranged on the machine table, the end socket can be vertically jacked up after being formed, a workpiece can be conveniently and smoothly taken out, crack screening is carried out on the end portion area of the end socket while the end socket is jacked out, crack defects can be preliminarily screened out to a certain degree through screening of the end portion of the end socket, and the quality and use safety of the formed end socket are ensured. According to the equipment, through the synergistic effect of the stamping mechanism, the positioning mechanism and the pushing mechanism, the efficient forming efficiency and the quality control efficiency of the end socket are achieved, and the machining efficiency and the product reliability are improved.

A ball may include a spherical shell, and apertures defined in the spherical shell. The apertures may be formed in the spherical shell based at least in part on a N-frequency tessellation of the spherical shell. A method of forming a ball may include molding a first hemisphere, molding a second hemisphere, and coupling the first hemisphere to the second hemisphere to form a spherical shell. The spherical shell may include apertures defined in the spherical shell based at least in part on a N-frequency tessellation of the spherical shell.

The embodiment of the invention provides a heat exchanger machining method and a heat exchanger. The heat exchanger machining method comprises the steps that a heat exchange pipe and a first pipe are assembled, the heat exchange pipe and the first pipe are connected, the heat exchange pipe is made of stainless steel, and the first pipe is made of stainless steel; welding the heat exchange tube and the first tube; the fins and the heat exchange tubes are assembled, specifically, at least part of the fins are installed between the adjacent heat exchange tubes, and the fins are made of aluminum or aluminum alloy; welding the heat exchange tubes and the fins; before the heat exchange tube and the fins are assembled, an aluminum material or a nickel material is arranged on at least one part of the surface of the heat exchange tube in a covering mode to form a coating. According to the machining method, welding of the heat exchanger is achieved, the welding reliability and the reliability of the heat exchanger are improved, and the heat exchanger has good corrosion resistance. The invention further provides the heat exchanger. The corrosion resistance of the heat exchanger and the heat exchange performance of the heat exchanger are improved.

The invention discloses an antibacterial food composite bag and a preparation method thereof, and relates to the technical field of food packaging. The antibacterial food composite bag at least comprises a polyethylene glycol terephthalate outer layer, an aluminum foil middle layer and an antibacterial polyethylene inner layer, the antibacterial polyethylene inner layer comprises the following raw materials in parts by mass: 100 parts of low-density polyethylene, 6-8 parts of a modified halloysite loaded origanum vulgare essential oil antibacterial agent, 1-3 parts of a silver-carbon dot composite antibacterial agent and 5-15 parts of low-density polyethylene grafted acrylic acid; 0.5 to 1.5 parts of an antioxidant; and 0.1 to 0.3 part of an initiator. The modified halloysite loaded origanum vulgare essential oil antibacterial agent and the silver-carbon dot composite antibacterial agent are compounded for use, so that the prepared antibacterial food composite bag has the advantages of wide antibacterial spectrum and long time efficiency, and the shelf life of food can be prolonged.

The invention belongs to the technical field of EPS forming, and particularly relates to efficient and energy-saving box forming equipment which comprises a forming machine body, a fixed mounting frame is arranged on the end face of the forming machine body, a moving module is slidably arranged on one side in the fixed mounting frame, and a fixing module is arranged on one side of the moving module and the top end face of the forming machine body. The movable modules are connected with the fixed modules in a sliding fit mode, feeding mechanisms are arranged on the portions, on the fixed mounting frame, of the outer sides of the multiple fixed modules, and pipeline butt joint structures are arranged on the outer surfaces of the fixed modules. The device is simple in structure, the working efficiency is improved, the production cost is reduced, various molds are fixed by arranging the holes and the bolts with the standard intervals, so that the device can independently disassemble various molds for forming, and the problems that an existing mold is poor in flexibility and inconvenient to disassemble and overhaul are solved.

A welding method includes placing a housing covered with an end cap into a jig, where a clearance structure is created on the jig and available for exposing a target weld zone between the end cap and the housing, and the target weld zone includes a first target weld zone section and a second target weld zone section located on two opposite sides of the end cap respectively; and moving the jig to a first welding station of a welding device; welding, by a first welding head of the welding device, the first target weld zone section through the clearance structure; and welding, by a second welding head of the welding device, the second target weld zone section through the clearance structure. The first welding station is located between the first welding head and the second welding head.

The invention discloses a pressure vessel weld reinforcement automatic detection device and detection method, and relates to the technical field of weld detection. The automatic detection device for the surplus height of the welding seam of the pressure vessel comprises a pressing plate which can move downwards in the vertical direction; a plurality of arc-shaped clamping plates are evenly arranged on the inner side of the positioning ring in the circumferential direction, and the arc-shaped clamping plates are stressed to move inwards in the downward pressing process of the pressing plate, so that the outer wall of the connecting pipe is clamped; and the flexible track is arranged on the periphery of the connecting pipe in a surrounding mode, a laser detector is arranged on the flexible track, and the laser detector can move in the circumferential direction of the flexible track and is used for conducting continuous scanning detection on the excess weld metal of the saddle-shaped welding seam. The pressing plate, the positioning column, the limiting plate and the arc-shaped clamping plate form a multidirectional cooperative positioning and clamping mechanism, so that the integrated constraint of axial pressing, radial centering and circumferential limiting of the connecting pipe is realized, and the relative positioning precision and the overall structural stability between the detection device and the connecting pipe are remarkably improved.

The present invention relates to a method of connecting a cooler module (4) to a metal plate by a sintering process, wherein the cooler module (4) comprises a metallic housing (5) having a coolant inlet (7), a coolant outlet (8) and a first housing side (9), and within the housing (5) a coolant flow structure (6), and wherein the method comprises the steps of: introducing at least one glycol between the coolant flow structure (6), applying a sinter paste and sintering to join the metal plate and the first housing side (9) under pressure and temperature.

The invention relates to the technical field of welding control, in particular to a welding control method and system for a tank body welding machine. The method comprises the steps that in the arc starting stage, the change rate of contact resistance is calculated in real time, when the change rate is larger than a preset change rate threshold value, main welding current is switched, a welding wire is drawn back to complete arc starting, and in the steady-state welding stage, the reference height of a welding gun is calculated based on the rotation angle of a tank body and pre-stored weld joint contour data; performing fast Fourier transform on the arc voltage, calculating an arc form factor, weighting deviation between the target arc voltage and the arc voltage by using the arc form factor to obtain a welding gun height compensation amount, generating a wire feeding speed regulation factor based on the arc form factor, and regulating a reference wire feeding speed to obtain a welding gun height compensation value; and the welding gun reference height and the welding gun height compensation amount are superposed to generate a welding gun height instruction. According to the scheme, arcing can be accurately controlled, the reliability of height tracking of the welding gun and the self-adaptive wire feeding speed are improved, and the welding seam quality is improved.

Laser marked articles having a predetermined feature marked onto a wall that is either user readable, machine readable, or both. Also, methods of making the marked articles by laser marking.

The invention provides a welding device for filter press roller machining, and belongs to the technical field of roller welding. The welding device comprises a workbench, a spindle box is installed on the workbench, a spindle is installed in the spindle box, a chuck is installed at the end of the spindle, a centering hold-down mechanism is arranged on the workbench, longitudinal moving assemblies are arranged at the two ends of the workbench respectively, and a fixing rod is fixed between the two longitudinal moving assemblies; a clamping mechanism is arranged on the fixing rod; the clamping mechanism comprises two mounting plates fixed to the fixing rod, a clamping assembly is arranged between the two mounting plates, and the clamping assembly comprises a lower clamping base plate and a driving mounting base which are fixed between the mounting plates; a lower clamping seat is arranged at the end part of the lower clamping base plate; an automatic telescopic cylinder I is mounted on the driving mounting seat, an upper clamping seat is hinged to the moving end of the automatic telescopic cylinder I, and a guide rod is fixed on the upper clamping seat; the problem that angle steel postures are prone to deviation in the traditional welding and positioning process can be solved, and the welding precision and consistency are improved.

The invention relates to a prismatic battery cell with a dimensionally stable metal cell casing (1) comprising a cell cup (3) having a component opening (11) and a cell cover (5) that closes the component opening (11). According to the invention, the cell cup (3) and the cell cover (5) are formed together from exactly one blank (42). In a joint forming process, the cell cup (3) and the cell cover (5) are formed from the blank (42) into a target geometry in which the cell cup (3) and the cell cover (5) are joined together in one piece and made of a single material.

The utility model provides a circumferential welding device for a pressure vessel, which relates to the technical field of welding devices and comprises a frame, transverse rods are symmetrically and fixedly mounted on the inner side of the bottom of the frame, sliding plates are slidably connected to the outer surfaces of the transverse rods, and telescopic cylinders are symmetrically and fixedly mounted on one sides of the sliding plates. The output end of the telescopic air cylinder is rotationally connected with the first jig, a fixing plate is fixedly installed on the inner side of the cross rod, rotating shafts are symmetrically and rotationally connected into the fixing plate, the ends, close to the sliding plate, of the rotating shafts are rotationally connected with the second jig, belt wheels are fixedly installed at the ends, away from the second jig, of the rotating shafts, and a conveying belt is arranged in the belt wheels in a sleeved mode. According to the utility model, two pressure containers can be circumferentially welded at the same time, and compared with the traditional equipment which can only perform single welding, the production efficiency is greatly improved, the production cycle is effectively shortened, the large-scale production requirement is met, an enterprise can produce more qualified products within the same time, and the market competitiveness is enhanced.

This invention provides face masks, including filter masks, and methods for manufacturing them. [Solution] A face mask comprising a mask body 143 defining a cavity for accommodating the wearer's nose and mouth, and a sealing member 144 hanging down from the mask body to engage with the wearer's face, wherein the mask body includes a filter 141 and a gas inlet 142, the filter being located in a first area of ​​the mask body and the gas inlet being located in a second area of ​​the mask body, a nose portion for accommodating the wearer's nose, a mouth portion for accommodating the wearer's mouth, and a cheek portion extending laterally across the wearer's cheek.

The application relates to an automatic welding equipment and method for H-shaped flat fin tube, which comprises a support, a strip disc arranged on the support, a flat base tube conveying and fixing device, a resistance welding equipment, a fin negative mold and a negative mold driving device; the flat base tube conveying and fixing device comprises a loading roller way, a pressure roller, a driving roller and an unloading roller way arranged in sequence; the pressure roller is connected with a pressure roller driving device; the support is provided with a driving roller driving device; the driving roller is connected with the driving roller driving device through a transmission mechanism; the resistance welding equipment comprises a welding head, an electrode driving device and a welding transformer; the welding head is provided with a resistance welding electrode; the welding transformer is fixedly arranged on the support; the welding transformer is connected with the electrode driving device; and the electrode driving device drives the welding head to move; the application has the advantages of simple structure, automatic feeding, automatic forming and automatic welding of the flat elliptical fin tube, high automation degree and high efficiency.

The utility model relates to a pipe fitting channeling production unit. The automatic groove rolling machine is characterized in that the automatic groove rolling machine comprises a machining platform, a movable platform, an automatic groove rolling device, a pipe fitting transferring conveying line, a self-adaption pipe fitting stabilizer, a discharging conveying line, a pipe fitting conveying device and a movable sliding table mechanism, the machining platform is fixedly installed at the front end of the movable sliding table mechanism, and the movable platform is installed at the tail end of the movable sliding table mechanism in a sliding mode; the discharging conveying line and the pipe fitting conveying device are installed on the two sides of the movable sliding table mechanism correspondingly, the machining platform and the movable platform are both provided with the automatic channeling devices and the pipe fitting transferring conveying line, and the two automatic channeling devices are both installed on the machining platform and the movable platform through installation bases of the two automatic channeling devices correspondingly. And each automatic channeling device is provided with a self-adaptive pipe fitting stabilizer. The device is reasonable in structural design and convenient to use.

The utility model belongs to finned tube assembly technical field, specifically speaking is a radiator fin assembly equipment, this step is through setting up U type groove, moving frame, support plate and fixed plate, first the U type pipe is placed in the inside of U type groove, then the finned tube is pasted closely with U type pipe port, through moving frame drive support plate enters the inside of finned tube and U type pipe, through the rotation block drive support plate and third gear rotate, through the meshing of third gear and first gear ring, makes third gear rotate, through third gear drive support plate rotates, makes support plate one end rotates to paste closely finned tube and U type pipe inner wall, thereby to finned tube and U type pipe synchronous positioning alignment, continue to move moving frame, through moving frame drive fixed plate paste closely finned tube one end, thereby through fixed plate cooperation U type groove carries out the fixation to finned tube and U type pipe, carries out welding again, can make the alignment of finned tube and U type pipe more stable convenient, has improved the convenience of device assembly.

The invention relates to a material, suitable for additive manufacturing and in particular for fused deposition modeling, wherein said composite material is obtained by fusion of at least two components: - at least one polymer matrix chosen among polyhydroxyalkanoates (PHA), and - at least one auxiliary filler chosen among biobased fillers consisting of biobased particles comprising lignin, cellulose and hemicellulose, wherein said biobased particles have a lignin / hemicellulose mass ratio from 1 to 6. The invention also relates to an additive manufacturing process and a product obtained by an additive manufacturing process.

A support surface for a patient support apparatus includes an inflatable bladder assembly including an inflatable bladder having a first layer defining a first aperture, a support located adjacent to the inflatable bladder, and having a second layer defining a second aperture axially aligned and overlapping with the first aperture. A first patch is connected to the first layer, extends across and covers the first aperture, and has an exterior face facing the support. A second patch is connected to the second layer, extends across and covers the second aperture, and has an exterior face facing the first inflatable bladder. The exterior face of the first patch is connected to the exterior face of the second patch at a patch connection, thereby connecting the inflatable bladder to the support. A method for forming an inflatable bladder assembly is also disclosed.

Disclosed is a method for manufacturing a water tank□(100). The method for manufacturing the water tank according to the present disclosure includes: producing an upper cylinder□(104) of a water tank; producing a lower cap□(105) of the water tank; welding the upper cylinder and the lower cap; a first polishing step using sandpaper having a first grit range; and a second polishing step using sandpaper having a second grit range larger than the first grit range.

A method of manufacturing an article at least partially made of cellulose fibers comprises inserting a cellulose pulp comprising cellulose fibers and water into a mixing cavity; applying a high shear mixing action to the cellulose pulp using a high-shear mixer, such that a foam blend comprising cellulose fibers, water and air bubbles is created; inserting the foam blend into a mold cavity; and molding the article by heating the foam blend contained within the mold cavity.