4results about How to "Neat ends" patented technology

This invention relates to a method for improving the bowl-shaped end face of drill collar steel after straightening, belonging to the technical field of drill collar steel production processes in the metallurgical industry. The technical solution is as follows: a seven-roll straightening method is used, with the reduction of the No. 1 and No. 3 upper and lower rolls being 4-5 mm, and the reduction of the No. 2 upper and lower rolls being 1-2 mm; the reverse bending amount is 15-16 mm; the straightening roll angles are: No. 1 upper and lower roll angle 29.5-30°, No. 2 upper roll angle 30-31°, No. 3 upper roll angle 29.5-30°, and lower roll angle 32-32.5°; the end of the straightened round steel is chamfered, with a chamfer angle of 30-45° and a chamfer length of 1-2 mm. The beneficial effects of this invention are: it can reduce the internal structural stress of the drill collar steel, ensure the hardness of the drill collar, and ensure that the bowl-shaped end face depth of the straightened drill collar steel is within 2 mm, avoiding cracking at the end face face during processing.

This invention discloses a traction winding and unloading device, belonging to the field of roll material production technology. The device includes a traction device, a floating fly knife device, a dual-shaft alternating winding device, and an unloading device. The traction device has edge trimming and tension adjustment functions. The floating fly knife device is equipped with a floating roller assembly and an L-shaped flipping guide groove to achieve clamping traction during cutting and automatic knife lifting after cutting. The dual-shaft alternating winding device realizes alternating winding of the two air-expanding shafts at two workstations through a flipping disc and a clamping assembly, and is equipped with a moving pressure roller that adjusts with the roll diameter. The unloading device consists of a moving trolley, a shaft pulling device, and an unloading trolley, which can automatically complete full roll grabbing, shaft pulling, air release unloading, and transfer. This invention realizes full-process automation from traction, edge trimming, fixed-length cutting, continuous winding to automatic unloading, and has the advantages of high production efficiency, good cutting and winding accuracy, stable operation, and wide applicability. It is suitable for the continuous production of roll materials such as film, non-woven fabric, paper, and aluminum foil.

This utility model provides a portable fire hose reeling robot, including a motor side plate, side plates, and a reinforcing connecting shaft. The motor side plate and side plates are fixedly connected to both sides of a support plate. Internal threaded holes are formed in the side walls at both ends of the reinforcing connecting shaft. The drive motor rotates the hose reel to reel in the hose. The wheels automatically move forward using the reverse pulling force during hose reeling, and the omnidirectional wheels automatically turn along the hose's laying path, facilitating automatic hose reeling without human intervention. The hose separation shaft and hose squeezing roller remove residual water and air from the hose, while the hose straightening roller automatically straightens any twisted hose. Finally, the hose width limiter and hose guide shaft press the two layers of hose together, achieving automatic drainage, automatic straightening, tight hose reeling, and neat end faces.

This invention relates to the field of lithium-ion battery manufacturing technology, specifically providing a full-tab battery cell for large cylindrical batteries, its preparation method, and applications. This invention innovatively employs a "winding-fixing-laser axial cutting-graded flattening" process flow, changing the traditional "cut-then-winding" process long used in the industry, achieving a breakthrough in the precision of tab forming. Specifically, after the bare cell is wound, the blank areas of each current collector layer have formed a stable stacked structure, which is precisely fixed using a special fixture and simultaneously cut along the axial direction by laser, completing the high-precision forming of multiple tabs in one step. This method fundamentally eliminates the problem of accumulated deviations caused by step-by-step operations in traditional winding processes, stably controlling the tab alignment accuracy within 0.1mm, effectively solving the long-standing problem of alignment consistency in existing technologies.