Shear butt welder

Abstract

The invention relates to a shear butt welder, which is characterized in that the shear butt welder comprises flat rolls, a pinch centering device, a stroke stopper, a base, a shear device, a welding device, fixing bolts and a waste collecting frame, the flat rolls are mounted on a front beam and a back beam of the base, a front sliding seat and a back sliding seat are mounted behind the flat rolls on the front beam and the back beam of the base, the pinch centering device, the shear device and the welding device are sequentially mounted in the front sliding seat and the back sliding seat and slide along the sliding seats respectively, the pinch centering device and the flat rolls are fixed to ends of the front beam and the back beam of the base through the fixing bolts and are arranged behind the welding device, and the stroke stopper is mounted on the lateral face of the base and behind the sliding pinch centering device. The shear butt welder is reasonable in design and compact in structure, shearing and welding quality of strip steel can be ensured, production efficiency is remarkably improved, and the shear butt welder not only has the function of feeding among working procedures, but also can recycle sheared waste heads in a centralized manner, and further has the advantages of small occupied space, reduction of labor intensity and cost, operational safety, convenience in use and the like.

Description

technical field [0001] The invention belongs to the production line equipment of straight seam welded pipe, in particular, it is a kind of shear butt welding which integrates the centering, shearing, welding process of the head and tail of the front and rear rolls of the medium and wide band, and the transportation between each process. machine. Background technique [0002] At present, the straight seam welded pipe production equipment used to roll medium and wide steel strips for straight seam welded steel pipes, the head and tail shearing of the front and rear coils in the strip steel preparation section are completed by shears, and the head The welding of the tail and tail is completed by the welding machine, that is to say, the centering clamping process, shearing process, and welding process of the head and tail of the steel strip before and after the coil are all completed independently; it has the following disadvantages and Disadvantages: [0003] 1. The productio...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is achieved by adopting the following technical scheme: the shear butt welding machine is characterized in that its structure is mainly composed of flat rollers, pinch centering devices, stroke stops, bases, shearing devices, welding device, fixing bolts and waste collection frame, the base is composed of front and rear beams, on one end of the front and rear beams of the base, a flat roller driven by a strip pinch machine is installed to pinch the strip steel, and the top surface of the base following the flat roller The front and rear sliding seats are installed symmetrically on the front and rear beams of the front and rear sliding seats, and the pinch centering device, shearing device, welding device sliding along the sliding seat are installed in the front and rear sliding seats in sequence, and the welding device following the sliding The front and rear beam ends of the rear base are fixed to the fixed pinch centering device and flat rollers on the base by fixing bolts; a stroke stopper is installed on the side of the base behind the sliding pinch centering device, and the sliding The foundation between the pinch centering device and the sliding shearing device is provided with a waste collection frame; each of the pinch centering devices is composed of a centering hydraulic cylinder, a frame, a lead screw motor reducer, a lead screw , lead screw seat, screw nut, centering roller seat assembly, guide block and guide block driving device, the machine base driven by the centering hydraulic cylinder is respectively installed in the front and rear slide seats, and the front and rear slide seats are respectively installed. Two screw seats are installed symmetrically on the two outer ends at the center of the top surface of the rear machine base, and a screw with left and right thread segments driven by a screw motor reducer is installed in the two screw seats. , The right thread section is screwed to connect the two wire nuts that move synchronously, and two pairs of centering roller seat assemblies that move synchronously are symmetrically installed on the outside of each thread nut; Two guide blocks are symmetrically arranged on the planes of the two machine bases, and a guide block driving device is installed on the bottom surface of the sliding seat. When the two guide blocks slide in the guide groove, the two guide blocks are driven to slide in the guide groove by the guide block driving device, so as to realize two The front and rear movement of the centering roller seat assembly; the shearing device drives two shearing devices respectively through two shearing moving cylinders symmetrically installed on both sides of the base, and each shearing device is powered by a shearing hydraulic pressure. Cylinder, shearing beam, dynamic shear seat, adjusting clearance screw and nut, clamping beam, clamping hydraulic cylinder, support roller, support hydraulic cylinder, shearing base, fixed shear blade and dynamic shear blade, the fixed shear blade The blade is connected to the shearing base, and the moving shearing blade is installed on it. The moving shearing seat is connected to the shearing beam through the sliding chute and the screw. The adjusting clearance screw and nut can push the moving shearing seat along the direction of the sliding chute Move to realize the adjustment of the gap between the movable shear blade and the fixed shear blade; the two shear hydraulic cylinders symmetrically installed on the dynamic shear base synchronously push the dynamic shear base to move down to cut the strip steel; this improves the prior art single The cantilever shear blade driven by the cylinder has the disadvantage of uneven force; two clamping hydraulic cylinders are symmetrically installed on the bottom surfaces of both sides of the centerline of the shearing base, and the clamping beam is driven up and down synchronously by the two clamping hydraulic cylinders Movement: Two supporting hydraulic cylinders are symmetrically installed at both ends of the bottom surface of the shearing base outside the two clamping hydraulic cylinders, and the supporting rollers are driven to move up and down by the two supporting hydraulic cylinders, so as to avoid damage to the fixed shears when the strip steel after shearing is moved. The wear of the blade; the welding device is driven by two welding hydraulic cylinders symmetrically installed in the base, each of the welding devices is driven by a head and tail clamping beam, a welding torch and an adjustment device , A clamping hydraulic cylinder, B clamping hydraulic cylinder, a swing seat, a swing cylinder, a welding beam and a welder base. Drive the head and tail clamping beam on the oscillating seat to swing together with the B clamping hydraulic cylinder. After the head and tail welding of the strip steel is completed, the oscillating seat is lowered to prevent the strip steel from wearing out the welding platform; the A clamping The hydraulic cylinder and the second clamping hydraulic cylinder can respectively drive the material head clamping beam and the material tail clamping beam to clamp the material head and material tail of the strip; the welding torch driving and adjusting device can move along the direction of the welding beam for welding

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