8results about How to "Weld tightly" patented technology

The utility model belongs to the technical field of sheet metal welding, and particularly relates to a sheet metal welding device which comprises an operation table and a horizontal supporting plate, and the operation table is provided with a supporting plate moving assembly used for driving the horizontal supporting plate to move front and back and a movable welding assembly used for moving left and right to weld sheet metal parts. A lifting pressing assembly used for pressing a sheet metal part is arranged above the horizontal supporting plate, two through grooves are symmetrically formed in the left end and the right end of the horizontal supporting plate, a centering positioning assembly is arranged in the middle of the horizontal supporting plate and comprises a two-way lead screw, and the two-way lead screw is rotationally installed in the middle of the horizontal supporting plate through a bearing. Threads at the left end and the right end of the two-way lead screw correspond to the two through grooves correspondingly, the outer sides of the threads at the two ends of the two-way lead screw are sleeved with two connecting blocks in a threaded mode correspondingly, connecting rods are rotationally installed at the top ends of the two connecting blocks in a front-back symmetrical mode, and a first spring is fixedly connected between the two connecting rods on the same connecting block. The ends, away from the connecting blocks, of the connecting rods are in bearing connection with vertical shafts.

The invention belongs to the technical field of silicon solar cells, and particularly relates to a copper electrode material and a method for preparing a copper electrode of a silicon solar cell by using the copper electrode material, the copper electrode material comprises the following components: a copper wire, a tin-bismuth alloy and modified rosin, and the preparation method of the modified rosin comprises the following steps: firstly, taking polyethylene glycol and aniline phenylacetic acid as raw materials; carrying out esterification reaction to obtain aniline modified polyethylene glycol; then, rosin and acrylic acid are used as raw materials, and acrylic acid modified rosin is obtained through a D-A addition reaction; and finally, by taking aniline modified polyethylene glycol and acrylic acid modified rosin as raw materials, carrying out esterification reaction. The invention also provides a method for preparing a silicon solar cell copper electrode by using the copper electrode material. The surface of a copper wire is sequentially coated with a modified rosin layer, a tin-bismuth alloy layer and a modified rosin layer. The copper electrode provided by the invention has relatively low bulk resistance and relatively good oxidation stability, and also has excellent adhesive force and relatively low interface contact resistance when the copper electrode is fused and welded on the surface of a substrate.

The present invention discloses a composite pipe drilling and welding machine and a process for drilling and welding using the drilling and welding machine, wherein the drilling and welding machine comprises a bottom pipe fixing frame and a drilling and welding integrated assembly, wherein the drilling and welding integrated assembly comprises a basic seat and a base, wherein a drilling device and a welding device are sequentially arranged on the base, wherein the welding device comprises a transverse support frame and a pipe extension clamping mobile unit and a heating mold mobile unit arranged on the transverse support frame, wherein the heating mold mobile unit comprises a heating mold. The drilling and welding machine of the present invention has an ingenious structure, can realize the integration of drilling and welding, has a high degree of automation, and has a high production speed, and can realize continuous and precise interval drilling and welding of pipe extensions on a pipe fitting; it can also meet the drilling requirements of pipes with different apertures; the welding alignment is accurate, and it is particularly suitable for drilling and welding of mesh steel belt polyethylene composite pipes.

The present invention relates to a double-chamber bag powder chamber filling and sealing system, the technical solution of which includes a workbench, a bag conveying device embedded in the workbench, and a powder filling device and a sealing device fixed on the workbench and arranged in sequence along the bag conveying direction, the powder filling device includes a powder storage bin fixedly installed above the bag conveying device, a plurality of filling funnels are arranged at the bottom of the powder storage bin, a first bag opening mechanism for opening the double-chamber bag powder chamber before filling the powder, and an electrostatic elimination mechanism for neutralizing the ions carried by the powder during the powder filling process are arranged below the filling funnel, and the double-chamber bag after the powder filling is transported to the sealing device by the bag conveying device for hot pressing and sealing. The advantage of the present invention is that the ions carried by the powder can be neutralized during filling, so as to prevent the powder from being adsorbed on the incision at the top of the powder bag, and ensure the integrity of the sealing of the powder bag after sealing.

The present invention relates to a long filament and a filament net, the main features of which are that the wafer adopts a parallel structure and is provided with a metal reinforcing conductor for increasing the current; the long filament has a metal base layer, the wafer is in close contact and welding with the metal base layer to reduce the thermal resistance as much as possible; and the long filament is woven into a net with other heat-conducting filaments during use, and the other heat-conducting filaments are used to dissipate heat for the long filament. In order to enhance the heat dissipation, the long filament has a metal base layer in close contact and welding with the other heat-conducting filaments. The long filament and the filament net disclosed by the present invention have the advantages of high luminous density, good heat dissipation, high reliability, flexibility, lightness and can be industrially implemented.

The present application relates to the technical field of shipbuilding, and discloses a welding method for a ship platform plate and an outer plate, which comprises the following steps: S1, measuring the thickness t of the platform plate; S2, butting the platform plate and the outer plate, with the outer edge of the lower end surface of the platform plate being connected to the outer plate; S3, measuring the maximum gap G between the inner side wall of the outer plate and the outer edge of the upper end surface of the platform plate and the included angle θ formed between the inner side wall of the outer plate and the lower end surface of the platform plate; S4, cutting the outer edge of the platform plate under the conditions of the thickness t, the maximum gap G and the included angle θ; S5, abutting the platform plate and the outer plate, with the first welding position being formed between the inner side wall of the outer plate and the outer edge of the upper end surface of the platform plate and the second welding position being formed between the inner side wall of the outer plate and the outer edge of the lower end surface of the platform plate; S6, opening a groove on the first welding position; and S7, sequentially welding along the first welding position and the second welding position to form the first weld and the second weld respectively. The welding method for the ship platform plate and the outer plate can reduce the workload of welding and ensure the welding quality.

The present invention relates to an automatic assembly equipment for U-rib and plate rib of bridges, which belongs to the field of steel structure bridge production equipment; a device for automatic assembly of steel structure bridge plate ribs for bridges is proposed; the technical scheme is: the automatic assembly equipment for U-rib and plate rib of bridges, comprising: a bracket, a U-rib / plate rib assembly module, a grinding component and a welding robot; the bracket is a horizontal beam, support frames are arranged at both ends of the bracket, a plurality of U-rib / plate rib assembly modules are arranged on the front end surface of the bracket, a plurality of grinding components are arranged on the rear end surface of the bracket, and the number of the grinding components is twice that of the U-rib / plate rib assembly modules, a guide rail pair is arranged above the bracket, and a welding robot is arranged directly above the U-rib / plate rib assembly module, and the welding robot is movably arranged on the guide rail pair.

The invention discloses a welding method of a spring. The welding method comprises the steps that a welding section, used for welding, of the spring is embedded into a containing space of an object, and the containing space is in a spiral shape matched with the spring; and the welding section and the object are fixed through laser welding, and the center of a welding spot of laser welding is close to the object or located on the object. The welding section of the spring is embedded into the spiral containing space of the object, so that the spring can be tightly matched with the object, and the welding stability and strength are improved; meanwhile, the center of the welding spot is close to or located on the object, it can be guaranteed that stress distribution of a welding area is more uniform, the stress concentration phenomenon possibly occurring in the welding process is reduced, and therefore the strength of a welding joint and the stability of the overall structure are improved, heat damage to the spring is reduced, and the integrity and mechanical performance of the spring are kept.