39results about How to "Uniform pitch" patented technology

The invention relates to an automatic winding mechanism, comprising a rack, a transverse motor, a winding motor, a spindle and a winding assembly; the transverse motor is arranged on the rack by a motor seat; the winding motor is glidingly arranged on the rack by a sliding seat; the spindle and a motor shaft of the winding motor are fixedly connected; the winding assembly is arranged on the spindle and driven by the winding motor to rotate; the sliding seat and a piston rod of the transverse motor are fixedly connected; the transverse motor drives the sliding seat to reciprocate on the rack, so a winding width of yarns on the winding assembly is realized. The transverse motor drives the sliding seat to drive the whole winding assembly to horizontally reciprocate while the winding motor drives the winding assembly to rotate to realize the automatic winding of the yarns on yarn rods, the winding width of the yarns is realized, distances between the yarn rods are adjustable to adapt to bobbins of different diameters or clews or products of different winding diameters, the operation is stable, the friction is small, and the yarn winding distances are uniform, and the forming quality and production efficiency are improved.

The invention relates to the technical field of cables, and discloses a high-flame-retardant petroleum platform cable. The cable comprises a cable body, and is characterized in that the cable body comprises conductors located in the middle, a wrapping layer is connected outside each conductor in a wrapping manner, an insulating layer is coated outside a plurality of conductors, and an outer sheathis coated outside the insulating layer. The high-flame-retardant cable for the oil platform has the advantages that the whole cable is environmentally friendly, high in flame retardance, high in mechanical performance, and resistant to mud, oil and cold.

The invention discloses a tapping-free sintering process for an internal thread of an MIM product. The process comprises the following steps (1) preparation of a POM screw mould core: calculating thedimension of the POM screw mould core according to dimension of the internal thread of the MIM product and shrinking percentage of a POM material and manufacturing the POM screw mould core according to corresponding dimension; (2) preparation of an MIM injection molding blank: first, injecting metal powder and a binder to a cavity filled with the POM screw mould core, and then heating and meltingthe POM screw mould core to prepare the MIM injection molding blank with an internal threaded hole; (3) degreasing: degreasing the MIM injection molding blank with the internal threaded hole by usinga catalytic degreasing technology; (4) degreasing the MIM injection molding blank with the internal threaded hole by adopting a vacuum sintering technology; and (5) carrying out inspection. The process not only can solve the problems that the tapping cost is high, the service life of a screw tap is short and tapping is forgotten as the hardness of the sintered product is high thoroughly, but alsocan improve the percent of pass of the product greatly. A reworking condition is avoided.

The invention discloses a device for directly drawing a helical circular quartz tube by a continuous-melt method and a method for drawing the helical circular quartz tube by the device. The device comprises a rotary winding which is arranged below a discharge hole of a continuous-melt furnace; the rotary winding machine is fixed on a support plate through a support frame; a left and right movement mechanism for driving the rotary winding machine to move left and right is arranged at the lower part of the support plate; a front and back movement mechanism is arranged at the lower part of the left and right movement mechanism; the lower end of the front and back movement mechanism is arranged on a lifting mechanism; the rotary winding machine comprises a rotary drum; the rotary drum is fixed on a rotating shaft; the rotating shaft is connected with a drive motor through a drive device; a quartz tube pressing tube is arranged on the rotary drum; a quartz tube descending tractor is arranged between a discharge hole of the continuous-melt furnace and the rotary winding machine; and a quartz tube cutter is arranged between the quartz tube descending tractor and the rotary winding machine. The helical circular quartz tube is formed by molding once; secondary processing is removed; an energy source is saved; time and labor are saved; and the helical circular quartz tube is even in screw pitch and stable in quality.

The invention discloses a method for producing a copper belt and a device thereof, the method adopts the continuous up-casting process for producing the copper belt, meanwhile, a backtrack vibrating process is added to the copper belt, the backtrack vibrating process can lead the incompletely solidified copper belt to vibrate up and down and become dense in a crystallizer, thus the density of the copper belt is increased. The production method adds the backtrack vibrating process in the existing continuous up-casting process, when the up-casting process is used for producing copper belts, the density of the copper belt is increased, the problems of air holes and uneven density are eliminated; the production method can save labor hour and abundant energy, and improve quality of the copper belt. The backtrack vibrating process is completed by a servo motor which has the advantages of small volume, light weight, high power output and torque, convenient speed regulation, and the like, thus accurately controlling the rotating range of a traction shaft and increasing pulling speed.

The invention discloses a winding device for tempered transmission rollers. The winding device comprises a framework, a rope guide, a first clamping mechanism, a second clamping mechanism, a first driving mechanism and a second driving mechanism. The first clamping mechanism is arranged at one longitudinal end of the framework, and one end of each tempered transmission roller is clamped by the first clamping mechanism; the second clamping mechanism is arranged at the other longitudinal end of the framework, the other end of each tempered transmission roller is clamped by the second clamping mechanism, and the tempered transmission rollers can rotate relative to the framework under the condition that the tempered transmission rollers are clamped by the first clamping mechanism and the second clamping mechanism; the tempered transmission rollers can be driven by the first driving mechanism to rotate; the rope guide is slidably arranged on the framework along the longitudinal direction of the framework, and starting ends of tempered auxiliary ropes penetrate the rope guide and then are fixed onto the tempered transmission rollers; the second driving mechanism is arranged on the framework, and the rope guide can be driven by the second driving mechanism to slide in a reciprocating manner. The winding device has the advantage that the tempered auxiliary ropes led out of the rope guide can be wound on the tempered transmission rollers along the axial arrangement of the tempered transmission rollers in a thread pitch manner under the matching effects of the first driving mechanism and the second driving mechanism and accordingly can be uniformly and reliably wound on the tempered transmission rollers.

The invention relates to a chiral poly alkyne nano-fiber preparation method, which comprises: adding an alkyne monomer solution into a hydrothermal kettle liner with a catalyst in a dropwise manner until the catalyst is completely immersed by the alkyne monomer solution; and adding a structure inducing agent into the hydrothermal kettle liner, standing for a certain time at a room temperature, carrying out a hydrothermal reaction at a temperature of 50-250 DEG C, cooling, and washing to obtain the chiral poly alkyne nano-fiber. According to the present invention, the chiral poly alkyne nano-fiber is prepared by using the novel homogeneous hydrothermal method, such that the method has advantages of simpleness, economy, cheap and easily available raw materials, no requirement of special equipment, and great industrialized production value.

The invention relates to a mineral high-strength compact chain production technology. The mineral high-strength compact chain production technology comprises the following steps of 1, vertical ring blanking; 2, vertical ring heating; 3, vertical ring single ring weaving; 4, vertical ring welding; 5, vertical ring burr removing; 6, vertical ring extrusion forming; 7, flat ring blanking; 8, flat ring heating; 9, chain weaving; 10, flat ring welding; 11, flat ring burr removing; 12, heat treatment; and 13, stretching. In the process of chain weaving, each vertical ring is sleeved with one flat ring to form a compact chain with the flat rings serving as circular rings and the vertical rings serving as compact rings. Generally, the mineral high-strength compact chain production technology has the advantages of being simple, excellent in mechanical property and high in material utilizing rate.

The invention provides an IC card annular coil winder which comprises a conical winding body, a tip cone used in cooperation with the winding body and a spiral column installed on the winding body, the interior and the exterior of the winding body are both of a conical structure, and a tip cone hole used for allowing the tip cone to be inserted is formed in the center line of the winding body. A spiral hole of a spiral structure is formed in the winding body, the screw pitch of the spiral hole is the same as that of the spiral column, the winding body, the spiral column and the tip cone are detachably installed, a take-up plate used for wire unwinding is installed at the bottom of the winding body, and elastic contraction gaskets are installed at the joint position of a stepped hole of the spiral hole. Opposite surfaces of the contraction gaskets are respectively connected with the spiral hole and the spiral column; according to the invention, the production process and the production precision are improved, the precise and fine copper ring is more stably used in the IC card chip, the design precision is improved, the material waste is reduced, the service life of the product is prolonged, and the quality of precise production is improved.

A metal spiral belt winding machine is characterized in that the upper surface of a machine base (1) is provided with a workbench (2); a driving device (3) is arranged below the workbench (2), and a shaft seat (4), a bearing bracket I (5) and a bearing bracket II (6) are arranged on the workbench (2) and connected through a winding shaft (7); a movable material clamping mechanism (8) is arranged on the winding shaft (7); one side of the shaft seat (4) is provided with a driven wheel (41), the driving device (3) is connected with the driven wheel (41) through a driving belt (9); the driven wheel (41) is connected with a gear arranged in the shaft seat (4); and the driving device (3) drives the driven wheel (41) to rotate and drives the winding shaft (7) to rotate through the gear, and thusthe movable material clamping mechanism (8) on the winding shaft (7) moves to conduct winding operation of a metal sheet belt (11). Through the metal spiral belt winding machine, the production efficiency is greatly improved.

The invention discloses a winding method of a twist pin. The specific steps are as follows: step 1, a plurality of winding coils are arranged in a set area of the twist pin, a rewinding coil is arranged below each winding coil, a wire hole is connected with a wire take-up mechanism and a wire take-up mechanism is arranged on the wire take-up mechanism; step 2 the winding speed of each bobbin, therotating direction of the bobbin, the rewinding speed of the corresponding rewinding bobbin, the wire take-up speed of the wire take-up mechanism and the wire arranging speed of the wire arranging mechanism are set on the controller; step 3, winding is performed to obtain that finished product. By winding the wire of the twist pin on the winding coil and winding the wire back on the winding coil at the same time, the tension frame and the guide device are used for guiding, and then the thread taking-up mechanism and the thread arranging mechanism are used to take-up and arrange the thread, sothat the twisted twist pin wire is uniform in pitch, good in density and smooth in shape, people can set the wire pitch according to their own needs, and the wire pitch can be adjusted, and the wirepitch can be combined with a plurality of wires and a plurality of wire diameters.