30results about How to "Prevent mutual attraction" patented technology

The invention discloses a ball planting device, a solder ball picking method and a solder ball installation method. The ball planting device includes: a printing room, including a grid template, a side wall, a top wall and at least two scrapers, the grid template, the side wall and the top wall are combined to form a loading space, and multiple grid holes, the arrangement pattern of the plurality of grid holes corresponds to the pattern of solder ball mounting positions of components to be mounted with solder balls; a vacuum picker, located below the printing chamber, and includes a plurality of suction nozzles, said At least some of the plurality of suction nozzles are respectively aligned with the plurality of grid holes, wherein the solder balls are loaded in the loading space and pushed through the grid template by moving the scraper so that the solder balls fall into the grid hole and sucked up by the suction nozzle. By adopting the printing method of moving the scraper so that the solder balls fall into the grid holes and are picked up by the suction nozzle, the loss of solder balls can be reduced or prevented, and the reliability and efficiency of the ball planting process can be improved.

The invention discloses a surface modification method of superfine diamond micro-powder. The surface modification method includes the steps of firstly, mixing superfine diamond micro-powder and a dispersing agent solution, performing solid-liquid separation, and filtering to remove impurities; secondly, drying the superfine diamond micro-powder wet material obtained in the first step through a flow drying manner to obtain surface-modified superfine diamond micro-powder. The surface-modified superfine diamond micro-powder is stale in dispersion in a water system, applicable to the polishing of high-end precise products such as semiconductors and optical lenses, high in polishing efficiency, good in polishing quality, free of scratches after polishing, capable of avoiding damage of a to-be-polished workpiece and capable of satisfying the requirements of the current technical field of the high-end precise products.

The invention discloses a magnetic bonding process for a small neodymium iron boron belt. The magnetized neodymium-iron-boron magnetic sheet is scraped into the magnetic sheet plate by the magnetic rod; the magnetic sheet plate on which the magnetic sheets are scraped is placed on an operating platform; the bonding plate is reversely pressed on the magnetic sheet plate; pressing bonding plate by hands, the magnetic sheet is transferred into the bonding plate from the magnetic sheet plate through the workbench; gluing the magnetic sheet and adhering the iron sheet to the glued surface of the magnetic sheet; when the magnetic sheet pasting device is used, the bonding plate is placed on the workbench, the sheet taking isolation plate and the adsorption plate are pressed on the bonding plate at a time, the magnetic sheet subjected to pasting work is transferred by the bonding plate through the sheet taking isolation plate and adsorbed to the adsorption plate, and the adsorption plate is placed on the material frame and transported to a production line to be assembled and used.

A preparation method of an aqueous thickener: mixing deionized water, sodium hydroxide, and sodium bicarbonate to prepare a buffer solution; mixing deionized water, aluminum salts, and magnesium salts to prepare an aqueous solution containing magnesium and aluminum; mixing deionized water , polyvinylpyrrolidone, and sodium hydroxide were mixed to prepare a solution containing polyvinylpyrrolidone; under stirring conditions, water glass, an aqueous solution containing magnesium and aluminum, and a solution containing polyvinylpyrrolidone were added dropwise to the buffer solution in turn to obtain a crystal Chemical liquid; after constant temperature crystallization, the obtained crystallization liquid is cooled, centrifuged, washed with water, dried, crushed, and sieved to obtain the finished product; the present invention inserts polyvinylpyrrolidone into magnesium aluminum silicate by in-situ hydrothermal synthesis In the middle of the layers of magnesium oxygen octahedron and silicon oxygen tetrahedron of the mineral, at the same time, through intermolecular force and hydrogen bond, polyvinylpyrrolidone is adsorbed on the inner and outer surfaces of magnesium aluminum silicate mineral particles, which is beneficial to improve the quality of magnesium aluminum silicate. Dispersion stability of salt minerals in water increases overall viscosity.

The invention discloses a paper-separating and creasing machine for corrugated box processing, which comprises a paper-separating board arranged obliquely, and a first limiting side plate is installed at the front and rear of the upper end of the paper-separating board; The cardboard is located between the two first limiting side plates, and the inside of the paper separation plate is installed with the first paper separation roller, the second paper separation roller and the third paper separation roller in sequence, wherein the second paper separation roller protrudes from the first paper separation roller The plane where the roller and the third paper separation roller are located; one end of the paper separation roller is installed with a motor, the other end of the paper separation roller is connected to the paper separation board through a bearing, and one side of the paper separation board is installed with a lower pressure plate, and the lower pressure line The upper crimping plate is installed above the plate, the first crimping roller is installed inside the lower crimping plate, the second crimping roller is installed inside the upper crimping plate, the second crimping roller and the first crimping roller A creasing cutter head is installed on the outside, a second limiting side plate is installed between the paper separating board and the second creasing roller and the first creasing roller, and a long groove is arranged inside the second limiting side plate.

The invention belongs to the technical field of permanent magnet assembly, and relates to a bonding device and method for a base with an annular groove and a permanent magnet, aiming to solve the problems of high cost, low efficiency, and long time consumption in the bonding of the two, including the base, The base is provided with a base with an annular groove, a magnetic repulsion device for releasing the polarity opposite to the permanent magnet, and a lifting and sealing mechanism for contacting the permanent magnet with the groove bottom bonding surface of the base with an annular groove. The magnetic repulsion device consists of Composed of a coil, a power supply and a switch, the coil surrounds the base with an annular groove and is connected to the power supply through a switch. The bonding device generates a magnetic field opposite to the polarity of the permanent magnet through the magnetic repulsion device to produce a repulsive force on the permanent magnet, which can prevent the permanent magnet from causing the permanent The magnet collides with the base, causing chipping and cracks of the permanent magnet, and the current of the coil is disconnected, the bonding device loses its magnetic field, and the permanent magnet and the base with a ring groove are bonded quickly and accurately.

The invention relates to the manufacturing field of regenerated chemical fibers, and discloses a preparation process of non-dyed regenerated polyester staple fibers. The bottle flakes are subjected to the following steps: S1: raw material preparation; S2: pretreatment; S3: heating and melting; after S2 The treated material is mixed with the color masterbatch, and then heated and melted together; the raw materials of the color masterbatch include in parts by weight: 70-90 parts of dimethyl terephthalate, 20-40 parts of propylene glycol, 120-150 parts of pigment part and 110-130 parts of dispersant; said dispersant includes polyethylene wax and cetyltrimethylammonium bromide, and the mass ratio of the two is 4:1; S4: spinning; S5: cooling molding; S6: oiling; S7: winding and bundling; S8: crimping and cutting; non-dyed and regenerated polyester staple fibers are obtained after the above steps. It can prevent the agglomeration of the pigment when it is dissolved in the molten polyester in the molten state, so that the pigment can be dispersed evenly, and finally the dyed colored polyester has a better dyeing effect.

The invention relates to a clamping device, in particular to a clamping device used for installing a linear motor magnet. The technical problem to be solved is to provide a clamping device for installing the magnet of the linear motor with precise positioning, without the need for staff to constantly adjust the position of the magnet, and with simple installation. Provided is such a clamping device for installing a linear motor magnet, including a large connecting block, a large rotating shaft, etc.; a large rotating shaft is embedded in the middle of the large connecting block, and two sides of the large connecting block are symmetrically arranged with Large curved rack. In the present invention, the upper end of the large arc-shaped frame is provided with a large lifting hole extending downward, the large lifting hole is located directly above the large rectangular groove, the lower end of the large arc-shaped frame is fixed with a worktable, and the left side of the top of the worktable is fixed There is a left groove running through the upper and lower sides. The large rectangular plate is located in the large rectangular groove and slides with it. The top of the large rectangular plate is fixed with a large lifting rod. The large lifting rod is slidably located in the large lifting hole. high.

The invention relates to the technical field of textile equipment, and discloses a sectional warping machine for textiles. The sectional warping machine for textiles comprises a lease reed, wherein aroller is arranged on one side of the lease reed, yarn guide rollers are arranged on one side of the roller, and a weaving roller is arranged on one side of the yarn guide rollers. The sectional warping machine for textiles has the advantages that as the bottoms of telescopic rods are all communicated with the interior of a regulation part, air pressures on pistons are the same, so it is guranateed that pressures between jacking wheels and spun yarn are the same, and then the tension of each piece of spun yarn is regulated to make all pieces of spun yarn have the same tension; meanwhile, the regulation part, the telescopic rods and the jacking wheels with metal properties can absorb the static of the spun yarn and prevent the mutual attraction of the spun yarn, so that the phenomenon of intertwining of the spun yarn hardly occurs in the working process; it is guranateed that the distance between a finishing roller and the roller is always unchanged; under the effect of the regulation part, the telescopic rods and the jacking wheels, the movement track of the spun yarn is in an arch bridge shape, and the probability of broken end intertwining is reduced.