37results about How to "Rigid foot" patented technology

The invention relates to a fiber production method, in particular relating to a preparation method of deoiled hard short fibers. The preparation method of the deoiled hard short fibers comprises the following steps: (1) melting a raw material of polyethylene terephthalate to undergo a polycondensation reaction under a vacuum condition, wherein the reaction temperature is 280-290 DEG C so as to improve the melt viscosity; (2) delivering the melt into spinning equipment, and spinning protofilaments; (3) watering the protofilaments; and (4) drafting the watered protofilaments at the temperature of 80-100 DEG C. Before the melt is delivered to the spinning equipment for spinning, the polycondensation reaction is firstly carried out under the high-temperature vacuum condition so as to improve the melt viscosity, obviously improve the density of spun terylene short fiber yarns and increase the fiber strength; and the conventional oiling process is changed into the watering process, particularly, deionized water is used, thus, the produced fibers have the advantages of sufficient rigidity and dry and fluffy handfeel.

The invention discloses an automatic assembling machine of a column oil cylinder and belongs to the technical field of automatic devices. An assembly module is fixedly connected with a rotating modulethrough a connection tool. The automatic assembling machine of the column oil cylinder comprises the rotating module and a column oil cylinder assembling module. The rotating module is composed of aportal frame and a rotating transmission mechanism. The column oil cylinder assembling module is connected with the rotating module. The assembling module fastens a middle cylinder and an outer cylinder which are conveyed by a truss, then the rotating module rotates by 90 degrees, the assembling module is driven to rotate by 90 degrees to be in the vertical state, and then the assembling module installs the middle cylinder into the outer cylinder; the rotating module overturns by 90 degrees, the assembling module is driven to be in the horizontal state, the truss places a plunger into the assembling module, and the assembling module and the rotating module cooperate to install the plunger into the middle cylinder in the same way. The automatic assembling machine of the column oil cylinderhas the advantages of being high in assembling efficiency, enough in rigidity, high in universality and the like.

The invention discloses a novel cross beam of a sawing machine. The novel cross beam comprises a column sleeve and beam plates. The beam plates comprise the left beam plate and the right beam plate. The left beam plate and the right beam plate are directly welded to the two sides of the column sleeve respectively. An ultra-long welded position exists between the column sleeve and each beam plate, and extends in a straight line from one crossed end of the column sleeve and corresponding beam plate to the other crossed end of the column sleeve and the corresponding beam plate. According to the novel cross beam of the sawing machine, the left beam plate and the right beam plate are directly welded to the two sides of the column sleeve to form a whole, and the traditional sawing machine cross beam screw connection way is changed, so that the cross beam of the sawing machine is higher in rigidity, small in deformation and better applicable to hard material sawing.

The invention discloses a turning regulating mechanism of a children's amusement chair. The turning regulating mechanism comprises a first base, wherein the first base is of a cylindrical structure; a first groove is formed in the bottom of the first base; a first motor is arranged at the bottom of the first groove; a boss is arranged at the center of the upper side of the first base; a railway groove is formed in the outer side of the boss and the railway groove is arranged at the upper side of the first base; a first mounting hole is formed in the upper side of the boss and the first mounting hole communicates with the first groove; bearings are arranged at two ends of the interior of the first mounting hole; a first rotating shaft is arranged on inner rings of the bearings; a conveying belt is connected to one end of the side of the first rotating shaft, and an output shaft of the first motor is connected to the first rotating shaft by virtue of the conveying belt; the end, away from the conveying belt, of the first rotating shaft is provided with a rotary body, and the rotary body is of a rectangular structure; and the end, away from the first rotating shaft, of the rotary body is provided with a cylindrical boss. With the application of the turning regulating mechanism provided by the invention, the chair can turn in all directions, and meanwhile, the chair can adapt to children differing in height; and the turning regulating mechanism is simple and flexible to operate and excellent in practicability.

The invention relates to a processing method of a central frame and a triangle sleeve of an equal-height triangle sleeve. The invention includes the steps: (1) a debugging bar is designed and manufactured; (2) the debugging bar is used for a grinding trial to regulate a cylindrical grinder for use; (3) a machine tool is regulated by the debugging bar to be a standard external grinding required bythe grinding of the triangle sleeve; (4) three guide faces of the triangle sleeve which have a 60 degree angle with each other are respectively grinded out through three-time positioning on a 60-degree clamp on a electromagnetic absorbing disk of a plane grinder; (5) a mutual parallel degree between three faces is detected and is less than 0.003mm. The invention has beneficial effects that the structure loading contact area of the equal-height triangle sleeve is big; the loading capability is strong and the guide accuracy is high. No distortion happens to the moving direction of the triangle sleeve under the effect of forces from any direction. Not only a fact that a wear-resistant PTFE support face fixed at the front end of the triangle sleeve contacts the supported external circularity on one generatrix can be guaranteed, but also the structural central frame of the equal-height triangle sleeve is convenient for repairing.

The invention discloses a device for grinding a raceway of a bearing outer ring of a wind power main shaft. The device for grinding the raceway of the bearing outer ring of the wind power main shaft comprises a base, a motor, a connecting shaft, a grinding wheel spindle and a grinding wheel. The base and the motor are both mounted on a machine tool working table. The connecting shaft is fixedly connected to one side of the base. The grinding wheel spindle is connected to the end of the connecting shaft through a bearing. The grinding wheel is fixedly connected to one end of the grinding wheel spindle. The grinding wheel spindle is arranged horizontally and is perpendicular to the connecting shaft. The other end of the grinding wheel spindle is in transmission connection with the motor through a transmission belt. A rolling shaft which is horizontally arranged and is perpendicular to the connecting shaft is arranged below the base and is close to one end of the connecting shaft. An adjustment support is connected to the end, away from the connecting shaft, of the base. Tapered iron is arranged at the position, close to the adjustment support, below the base. An adjustment screw used for adjusting the position of the tapered iron is connected between the adjustment support and the tapered iron. An angle adjustment mechanism used for adjusting the horizontal angle of the grinding wheel is mounted at the position, perpendicular to the connecting shaft, on the machine tool working table and located on one side of the base. The device is simple in structure, convenient to mount and adjust and beneficial to actual operation.

The invention discloses an ultrasonic welding device. The ultrasonic welding device mainly comprises a pedestal, a stroke adjusting system, an ultrasonic vibration device, a bottom mold part and a power-driven system. The ultrasonic vibration device comprises an energy converter, an amplitude-change pole and a fixing clamp. The stroke adjusting system comprises adjusting knobs, lead screws and limit stopping blocks. The power-driven system comprises a driving motor, a guide rail and a limiting block. The bottom mold part comprises a bottom mold base, a welding joint and a rigid auxiliary support. According to the ultrasonic welding device, the working direction is perpendicular to an ultrasonic vibration direction, the rigid auxiliary support can improve the system rigidity, different welding modes can be realized through fast replacement of a bottom mold and the welding joint, and ultrasonic welding of plastic parts can be achieved.