66results about How to "Clearance is easy to control" patented technology

The invention discloses a permanent magnet brushless direct current motor rotor magnet pasting device. The device comprises an iron core clamping and positioning mechanism, a magnetic steel preset tool, a magnetic steel pushing mechanism and a magnetic steel pressing and isolating mechanism, wherein the iron core clamping and positioning mechanism is used for clamping and fixing a to-be-assemblediron core on an iron core station of a working platform, a tool main body of the magnetic steel preset tool is arranged above the iron core station and is provided with an accommodating cavity for accommodating to-be-assembled magnetic steel, the magnetic steel pushing mechanism extrudes the magnetic steel in the accommodating cavity to the periphery of the iron core from top to bottom, the magnetic steel pressing and isolating mechanism comprises a magnetic steel pressing block arranged on the periphery of the iron core station, the magnetic steel pressing block is provided with a positioningface used for being attached to a side face of the magnetic steel, and the magnetic steel pressing block is fixedly connected with an isolating piece which protrudes out of the positioning face and is used for stretching into a gap between the adjacent magnetic steel. The permanent magnet brushless direct current motor rotor magnet pasting device can position, guide, isolate and compress the magnetic steel, and assembly precision and assembly efficiency are improved.

The invention provides a bent pipe machining method and a bent pipe, and belongs to the technical field of bent pipe machining. The method adopts an eccentric straight pipe and an induction heater. The method comprises the steps that S1, the eccentric straight pipe is mounted on a support table, a to-be-bent section is sleeved with an intermediate frequency induction heating ring, a first pipe section is movably mounted in a guiding assembly, the end of a second pipe section is clamped through a front chuck, and a rear pushing bent chuck clamps the end of the first pipe section and pushes thefirst pipe section to move in the direction of the to-be-bent section; and S2, intermediate frequency current is introduced into the intermediate frequency induction heating ring, the to-be-bent section is heated, when the temperature of the to-be-bent section is increased to a plastic state, the first pipe section is advanced through mechanical thrust, the to-be-bent section is bent, and the bentto-be-bent section is quickly cooled with a coolant. The bent pipe machining method adopts the eccentric straight pipe with the outer diameter being changed, the inner side thickening amount of the machined bent pipe is reduced, and the weight of a pipe system is reduced.

The invention discloses a rectangular staggered joint shield based capping segment and post segment assembling structure and method. The method comprises steps as follows: lower T-shaped segments at the bottom of assembling space as well as left waist segments and right waist segments located on two sides of each lower T-shaped segment respectively are assembled; a first assembling zone is reserved at the top of the assembling space; a second assembling zone is reserved on the left side or the right side of the top of the assembling space; upper T-shaped segments are assembled in the first assembling zone; capping segments are assembled in the second assembling zone; post segments are assembled between the upper T-shaped segments and the lower T-shaped segments. The upper T-shaped segments, the capping segments and the post segments are sequentially mounted, and the capping segments and the abutted waist segments are not staggered, the ring height difference between adjacent rings and an assembling gap between the adjacent segments are effectively controlled, the problem that the capping segments cannot be inserted into the gaps is solved, a gap between the upper and lower T-shaped segments is easier to control, and the longitudinal insertion stability of the middle post segments is high.

The invention provides an expansion screen pipe which comprises an inner layer pipe, a middle layer pipe and an outer layer pipe, wherein the inner layer pipe, the middle layer pipe and the outer layer pipe are fixed and mounted in a sleeved mode in sequence from inside to outside. Multiple kerfs are distributed in the pipe wall of the inner layer pipe, the middle layer pipe is formed by coiling filaments spirally, and multiple holes are also distributed in the pipe wall of the outer layer pipe. The expansion screen pipe has the advantages that the granulometric class of filtered gravel can be controlled accurately, an oil drainage area is enlarged through expansion hole enlargement, oil flow resistance is reduced at the same time, and crude oil produced by a single well daily can be improved by 30-50 percent.

The invention provides a tool device capable of controlling a sheet welding gap. The device comprises a fixing base, quick pressing heads, first bolts and second bolts; a groove is formed in the middle of the fixing base, and a plurality of gas spraying holes are uniformly formed in the bottom of the groove in the extending direction of the groove; first fastening screw holes and first connectingscrew holes are formed in the two sides of the groove, and the bolts are in screw joint in the first connecting screw holes; the quick pressing heads are oppositely arranged and fixed on the two sidesof the groove in the extending direction of the groove correspondingly, each fast pressing head comprises a support, a pressing arm assembly and a pressing head, the pressing arm assemblies are pivoted to the tops of the supports, the supports are fixed to the fixing base, the pressing heads are fixed at the ends, adjacent to the groove, of the pressing arm assemblies, the second bolts are in screw joint in the first fastening screw holes, and the pressing heads can be inserted into the first fastening screw holes. According to the tool device capable of controlling the sheet welding gap, theconsistency of gaps in the welding process can be simply and effectively controlled, and the problems of gap change and clamping failure caused by the fact that a sheet is deformed are prevented.

The invention discloses box assembling equipment which comprises a machine frame and a conveying belt (10), a glass lifting table (1) and a box assembling aluminum profile pushing mechanism (2) on the glass lifting table (1) and is characterized in that a gantry type assembly angle floating jaw mounting bracket (3) is arranged on the glass lifting table (1); four telescopic mechanical arms (4) are arranged on the gantry type assembly angle floating jaw mounting bracket (3); and floating jaws (5) are installed on the heads of the telescopic mechanical arms (4). The fully-automatic box assembling equipment has the beneficial effects that when a box is assembled, the distances between a glass plate and the peripheries of a side plate are ensured to be consistent, so that the mechanical safety of components is improved; by adopting floating clamping heads, the box assembly angle error is effectively controlled, and the assembly angle quality is improved; and as a gap between the side frame and the glass plate is controllable, the overflow of glue on the surface of the glass plate is reduced, and the effects of avoiding glue scraping and removal and improving the appearance quality of the components are achieved.

The invention provides a transport plane roller choke plug device. A roller bearing and a double-acting bearing are arranged on an axial rotary shaft, the axial rotary shaft, the double-acting bearing and the roller bearing are arranged on a bearing seat in a combined mode, the end portion of the bearing seat is provided with an upper bearing cover through a bolt, a sliding block is connected with the axial rotary shaft, and an hydraulic fluid port is arranged inside the axial rotary shaft. Seal rings respectively arranged on two sides of the axial rotary shaft are arranged on small bearing seats, bearing traction bars arranged on two sides of the sliding block are connected with the bearing seat, and the rear end of the bearing seat is provided with a double-acting bearing cover which is arranged on the inner side of the bearing seat.

The invention discloses a carton strapping machine with an inclined ejection type resistance function. The carton strapping machine comprises a strapping machine, a conveying belt and a carton limiting device. The strapping machine comprises a supporting platform on the lower portion and a frame on the upper portion. The conveying belt is arranged on the supporting platform and penetrates throughthe frame. The carton limiting device comprises a pair of horizontal supporting plates and an upper supporting plate, wherein the horizontal supporting plates are symmetrically arranged in a front-and-rear mode. The horizontal supporting plates are fixed to the upper end face of the frame, and rectangular sleeve bodies are connected to the end faces, close to each other, of the right portions of the horizontal supporting plates in a pivot joint mode. Sliding rods are inserted into the sleeve bodies, the upper ends of the sliding rods are hinged to the front end face and the rear end face of the upper supporting plate, and a limiting roller is connected between the lower ends of the sliding rods in a pivotal mode. A telescopic rod is arranged at the lower end of the upper supporting plate and arranged in a left-and-right horizontal movement mode. An angle adjusting device is arranged on the horizontal supporting plate on the front side, and used for adjusting the inclination angle of the cover body on the front side. By the adoption of the carton strapping machine, a carbon can be strapped with a plurality of strapping strips, the carton strapping machine adapts to cartons with different sizes, and the gap between every two adjacent strapping strips is controllable.

The invention provides a heat conduction comb tooth device of an electric heating hair straightening comb. The device comprises a comb tooth unit and a comb tooth base, the comb tooth unit comprises aplurality of comb teeth which are inserted side by side, each comb tooth is sheet-shaped and has a bent cross section, and the cross section in a comb tooth main body part comprises a first arc located at the central part and two second arcs located at two sides of the first arc. The bending direction of the second arc is opposite to that of the first arc, and the curvature radius of the second arc is smaller than that of the first arc; first installation structures for fixedly installing the comb teeth and the comb tooth base are arranged on the two sides of the roots of the comb teeth respectively, second installation structures matched with the first installation structures are correspondingly arranged on the comb tooth base, and the first installation structures are inserted into thesecond installation structures in a sliding mode in the length direction of the comb tooth base. By the adoption of the specific comb tooth shape, the inserting structure between the comb teeth and the detachable structure of the comb tooth unit and the comb tooth base, hair straightening efficiency is improved, accurate positioning can be achieved, installation is convenient, and installation efficiency is improved.

The invention discloses a paper box packing machine driven by swing rods. The paper box packing machine comprises a belt bundling machine, a conveying belt and a paper box limiting device, wherein thebelt machine is composed of a lower supporting platform and an upper frame body; the conveying belt is arranged on the supporting platform and penetrates through the frame body, the paper box limiting device comprises a pair of L-shaped horizontal supporting plates which are symmetrically arranged in a front-back symmetry mode, and a plurality of lifting supporting blocks are movably arranged between horizontal parts of the horizontal supporting plates in a left and right mode; limiting plates are arranged on the lifting supporting blocks from top to bottom in an inserted mode, the lengths ofthe limiting plates arranged from the left to the right are sequentially shortened, and an upper supporting plate is fixed at the upper ends of the limiting plates; and cylindrical driving rods are formed on the front end face and the rear end face of the upper supporting plate, the swing rods are hinged to the end faces, close to vertical portions, of the pair of the horizontal supporting plates, and the swing rods are provided with long-hole-shaped guide grooves which penetrate back and forth. According to the machine, a carton can be bundled with multiple nylon cable ties, the machine is adaptive to the paper boxes with different sizes, and the gaps between the multiple bundling nylon cable ties are controllable.

The invention provides an air duct type air conditioner. The air conditioner comprises a shell, an evaporator, a plurality of fans and a driving device, and further comprises a sealing plate. The sealing plate is located in an internal space of the shell and partitions the internal space of the shell into a first space and a second space. The multiple fans are located in the first space, and the driving device is located in the second space. According to the air duct type air conditioner, the driving device is isolated from a fan system, and influences of the driving device on the overall blast capacity and noise in the fan running process are avoided.