44results about How to "Eliminate indentation" patented technology

The present invention provides a high-bonding strength copper-aluminum composite conductive material and a preparation method thereof. The high-bonding strength copper-aluminum composite conductive material comprises a clad copper layer and an aluminum core base body; an interatomic bonded metallurgical bonding layer is formed between the clad copper layer and the aluminum core base body; the thickness of the bonding layer ranges from 5 to 35 microns, and the bonding strength of the bonding layer is more than 40 MPa; a copper-aluminum intermetallic compound is dispersedly distributed in the bonding layer; the components of a diffusion layer adjacent to a copper base body are uniform, and the thickness of the diffusion layer is small; and a diffusion layer adjacent to an aluminum base body is of a reticular structure formed by a mixture of two or more components, and the thickness of the diffusion layer is large. According to the high-bonding strength copper-aluminum composite conductive material and the preparation method thereof of the invention, the bonding of copper and aluminum achieves a metallurgical bonding state, the corresponding bonding strength of the bonding of copper and aluminum is more than 40MPa; the thickness of the side copper layer of the copper-aluminum composite conductive material is about 1.6 to 2 times of the thickness of the plane copper layer of the copper-aluminum composite conductive material; the thickness of the side clad copper layer is large enough to meet the requirements of large current impact and heat dissipation; and the elongation rate of the copper-aluminum composite material is greater than 30%. The processing of torsion, spiraling and side bending of the high-bonding strength copper-aluminum composite conductive material in the application of the high-bonding strength copper-aluminum composite conductive material to new fields can be achieved.

The invention discloses a bending blank manufacturing method for stainless steel flash welding thin-wall ring profiles. The method comprises the steps that a stainless steel profile fed according to specifications is divided into five segments of mn, no, op, pq and qw, heated to a temperature of 720 DEG C+/-20 DEG C and fed in a bending machine for positioning. The op segment is bent, rotation linear speeds of an upper roller and two lower rollers are 2400 mm/min, the upward moving speeds of the two lower rollers are 10.0 mm/min, the bending is repeated for 3 times, and the op arc segment at this moment achieves a preset curvature radius; and the no segment and the pq segment are bent, the rotation linear speeds of the upper roller and the two lower rollers are 1200 mm/min, the downward moving speeds of the two lower rollers are 12.7 mm/min, the bending is repeated for 3 times, and the no and pq arc segments at this moment achieve preset curvature radii. The profile is bent and deformed into a D-shaped ring blank, two straight sides and an arc portion of the ring blank are connected through a transition arc segment, and phenomena of bent angles at connection positions of the two straight sides and the arc portion and indentations on the surface of the ring blank are eliminated.

The invention discloses a polishing device special for up-drawing of an oxygen-free copper rod, and belongs to the technical field of auxiliary polishing for varnished wire production. According to the technical key points, the polishing device comprises a bracket, a copper powder recovery box is arranged on the bracket in the vertical direction, a plurality of sets polishing units are arranged inthe copper powder recovery box at intervals in the height direction, and the to-be-polished copper rod passes through all the polishing units in the vertical direction; each polishing unit is composed of three or more grinding wheel polishing mechanisms which are evenly distributed at intervals in the circumferential direction of the to-be-polished copper rod and arranged in a staggered mode in the axial direction of the to-be-polished copper rod, and the grinding wheel polishing mechanisms comprise grinding wheels; the grinding wheels are arranged in the vertical direction, and the polishingend faces of the grinding wheels are each in an arc shape; and the total length of arc lines formed by contact between all the grinding wheels located on the same polishing unit and the to-be-polished copper rod is larger than the perimeter of the to-be-polished copper rod. The polishing device special for up-drawing of the oxygen-free copper rod is reasonable in structure, good in polishing effect and convenient to use, and is used for polishing of the oxygen-free copper rod.

The present invention relates to a brassiere, including: two brassieve cups which are divided into left cup and right cup, and can be connected together, two side pieces which are respectively connected with outer sides of said brassiere cups and two back pieces which are respectively connected with outer sides of said side pieces. It is characterized by that the above-mentioned side pieces and back pieces of brassiere cups are integrally formed, and made up by using plastics or rubber.

The invention discloses a section bending blank manufacturing method of an iron-based high temperature alloy flash welding thin wall ring piece. The method includes the following steps: dividing an iron-based alloy section which is fed in specification into five sections including an mn section, an no section, an op section, a pq section and a qw section, heating the sections to the temperature of 670+-20 DEG C, installing the sections into a bending machine to be located, first bending the op section, enabling the wire rotating speed of an upper roller and two lower rollers of the bending machine to be 2400mm/min and the upward moving speed of the two lower rollers to be 6.0mm/min, repeatedly bending the section for 5 times at the moment when the op circular section reaches preset curvature radius, then bending the no section and the pq section, utilizing the wire rotating speed of the upper roller and the two lower rollers to be 1200mm/min and the upward moving speed of the two lower rollers to be 7.6mm/min, repeatedly bending the sections for 5 times at the moment when the no circular section and the pq circular section to reach the preset curvature radius. The section is bent and transformed into a 'D'-shaped ring blank. Two straight sides of the ring blank are connected with the transition circular section through the circular portion, and corner bending produced by connection of the two straight sides and the circular portion and impresses produced on the surface of the ring blank are removed.

Disclosed is a paper turning mechanism for a printer. At least one roller positioned at a paper outlet end of the paper turning mechanism comprises a driving component, a plurality of driving balls and a paper delivery roll. A containing cavity is reserved at one end of the paper delivery roll, and a plurality of containing grooves are arranged on the side wall of the containing cavity. The driving component comprises a plurality of blades, recesses are formed among adjacent blades, the driving component is contained in the containing cavity, multiple containing spaces are respectively formed between the recesses and the side wall of the containing cavity, and the driving balls are contained in the containing spaces and capable of moving therein. When the driving component is driven to rotate in the containing cavity along a preset direction, the driving balls are driven to move by the blades. When being driven to move into the containing grooves, the driving balls are limited by the containing grooves and incapable of moving, so as to transmit driving force of the blades to the paper delivery roll and drive the paper delivery roll to rotate along with the driving component. When the driving component stops rotating, the paper delivery roll is capable of continuously rotating relative to the driving component along the preset direction under action of friction force between the tail end of a paper sheet and the paper delivery roll.

The invention discloses intelligent tube bending equipment. The intelligent tube bending equipment comprises an intelligent tube bending equipment body consisting of an electric control mechanism, a feeding mechanism, a tube bending mechanism and a clamping mechanism, wherein the electric control mechanism is electrically connected to the feeding mechanism; the feeding mechanism is in sliding connection to the tube bending mechanism through a pipeline part; the tube bending mechanism is fixedly connected with the clamping mechanism; the clamping mechanism comprises a clamping frame; and the inner wall of the clamping frame is in sliding connection to a clamp; the top of the clamp is in sliding connection to a bearing block. The invention relates to the technical field of intelligent manufacturing equipment. The intelligent tube bending equipment solves problems that indentations are provided on the surface of the pipeline part as a tube bender directly clamps the pipeline part through a clamp in a pipeline processing process, pipe fitting scrap is caused by sliding during local tube bending if diameters of pipeline parts have difference, and generate noises are generated, the surrounding environment is severely affected and the service life of the clamp is reduced as mutual friction between the clamp and the pipeline part exists when the pipeline fitting feeds back and forth.

The invention discloses a special fixing block for a twisting machine, which is characterized in that it comprises a T-shaped block structure arranged symmetrically as a whole, rectangular steps are symmetrically arranged on both sides of the T-shaped block structure, and a semi-submerged groove is opened on the top. The right side of the semi-sinking groove extends to the right end of the T-shaped block structure, and the left side of the groove has a semicircular surface with a diameter of 14 mm. There are three vertical threaded through holes on the center line of the bottom of the groove. There is a horizontal threaded hole on the left end face of the T-shaped block structure. The invention has the advantages of low cost, easy processing and forming, and long service life, and can ensure that when the twisting machine manufactures products, the positioning is accurate, the overall stability is good, the product quality is good, and the production efficiency is high, and it is suitable for mass production of the twisting and bending process of the fin evaporator production use.

The invention discloses a method for forming a torsion roller. The method includes the steps that (1) scrapped high-speed wire rollers are machined to be in a step shape; (2) torsion sleeves, distance sleeves and labyrinth rings are machined; (3) the upper roller torsion sleeves, the distance sleeve and the labyrinth ring are sequentially installed, and the lower roller torsion sleeves, the distance sleeve and the labyrinth ring are sequentially installed. By the adoption of the method, the waste rollers can be recycled by bushing, the cost of the torsion roller is lowered, the abrasion resistance of the torsion roller is improved, and the service life of the torsion roller is prolonged; after the device is used, the production cost of bars is saved, the defect that torsion roller consumption is large due to the poor abrasion resistance of the torsion roller is overcome, and considerable benefits can be created for enterprises.

The invention discloses a portable folding stool, which comprises a waist ring, four leg rods, four step bolts, four trapezoid pipe sleeves and a cloth stool surface, wherein four arc-shaped recesses are formed in the inner side of the waist ring; holes are respectively formed in the four recesses; the arc-shaped recesses of the waist ring correspond to wavy curves, which are formed by unfolding and folding of the leg rods, of the leg rods; holes are formed in the outer sides of the wavy curves in the middle parts of the leg rods, and riveting nuts are riveted in the round holes; the four leg rods are arranged into a nylon ring of the waist ring in a penetrating manner; the four holes of the waist ring and the riveting nuts of the four leg rods are connected in a rotatable manner through the four step bolts so as to form a wheel cover shape, and the middle is integrally connected with a pipe sleeve; a round hole is formed in the side surface of each trapezoid pipe sleeve; the four trapezoid pipe sleeves sleeve the tops of the four leg rods; sleeving bags at the four corners of the cloth stool surface sleeve the four trapezoid pipe sleeves at the tops of the four leg rods, and the bottom surfaces of the sleeving bags at the four corners of the cloth stool surface are riveted with the round holes in the side surfaces of the four trapezoid pipe sleeves and the round holes in the upper ends of the four leg rods through four core-pulled rivets.