34results about How to "Good tinning effect" patented technology

The invention provides an organic metal shielded welding film and a preparation method thereof. A novel surface treatment mode is an innovative process technology between an organic shielded welding film and metalized surface treatment; namely, a physical isolation protective layer is created; the protective layer is composed of a main clad layer and an organic protective layer; the main clad layer comprises silver metal and organic metal; the main clad layer is positioned on the surface of a circuit board; and the organic protective layer is positioned on the surface of the main clad layer. The organic metal shielded welding film has all performances of an OSP film, and simultaneously, has type chemical silver surface treatment performances; the preparation process is simple; the appearance visual inspection convenience is greatly improved; the tinning effect can be effectively improved; and the galvanic effect in the production process can be inhibited.

The invention relates to the technical field of tinning devices, in particular to a cylinder seat tinning device for a refrigerator. Support plates are fixed at both ends on the upper side of a workbench, and the two support plates are respectively provided with a rotating shaft in the penetration mode. The corresponding sides of the two rotating shafts are respectively fixedly provided with a rotating plate, and the corresponding sides of the two rotating plates are respectively provided with a threaded rod by welding through a connecting rod. The upper and the lower ends of the correspondingsides of the two rotating plates are respectively provided with an L-shaped clamping plate through a sliding mechanism, and the two ends of the threaded rods respectively penetrate the two L-shaped clamping plates. The outsides of the upper and lower ends of the two threaded rods are respectively provided with a knob, a U-shaped frame is fixed on the upper end of the workbench, a motor is mountedon the inner side of the U-shaped frame, an output shaft of the motor is connected with one rotating shaft, and the other end of the other rotating shaft is fixedly provided with a limiting block. Aconnecting pipe is fixed on the upper side of the U-shaped frame, and a plurality of nozzles are evenly arranged at the lower end of the connecting pipe, and a feeding pipe with a valve is connected to the upper end of the connecting pipe. The tinning device is simple in structure and high in tinning efficiency and causes no pollution to the workbench.

The invention provides a method and device for cleaning and separating various components and parts and recycling tin from waste circuit boards. The method comprises the following steps of: adding the waste circuit boards into a mixture of tin stripping liquor methylsulfonic acid and SnCl4; and stripping tin through pulsed ultrasonic treatment and vibrating treatment to obtain tin-stripped liquor; and a proportion, in the mixture, of the methylsulfonic acid is 1.0wt.%-20.0wt.%. The method is short in period, is high in efficiency, is short in flow, can realize cleaning and separating of the various components and parts on the waste circuit boards, also realizes efficient recycling of tin, realizes cleaning pre-treatment of the waste circuit boards, does not cause damages on the various components and parts, and can achieve the purpose of reducing emission and increasing income. The device is simple and practical, and can comprehensively obtain good tin stripping effect and good tin extracting effect.

The invention discloses an automatic tin cutting machine which mainly comprises a cutting gear blade, a guide wheel, a tin outlet nozzle pipe and a tin inlet head, wherein the cutting gear blade is arranged opposite to the guide wheel, a shallow groove surrounding the circumference is arranged on the circumference of the guide wheel, cutter teeth of the cutting gear blade are arranged opposite to the shallow groove arranged on the guide wheel, the tin outlet nozzle pipe is opposite to the tin inlet head, a half-edge groove is arranged on the mesopore wall of the tin outlet nozzle pipe along the longitudinal direction, and the cutter teeth of the cutting gear blade cuts over the half-edge groove so as to split a tin wire in the tin outlet nozzle pipe. Because the tin wire between the cutting gear blade and the guide wheel is cut through the cutting gear blade, and a cutter tooth angle of the cutting gear blade is reasonably designed, the automatic tin cutting machine can well drive the tin wire to move forwards and can also efficiently prevent the wire adhesion phenomenon caused by the cutter teeth of the cutting gear blade, which excessively cut over the tin wire, therefore, the invention has the advantages of high automation degree and good tin cutting effect.

The invention relates to the technical field of tin dispensing equipment, in particular to automatic online tin paste dispensing equipment and a working method thereof. The automatic online tin paste dispensing equipment comprises a rack, a workbench, a tin dispensing device and a control device. The rack comprises an upper rack body and a lower rack body. The upper rack body is installed on the lower rack body and covers the workbench and the tin dispensing device. The control device is electrically connected to the workbench and the tin dispensing device. The workbench comprises an installation plate, a feeding assembly, a fixing assembly and a discharging assembly. The tin dispensing device comprises a supporting frame, a driving sliding platform, a detection assembly, a tin smearing assembly and a tin welding assembly. The automatic online tin paste dispensing equipment is high in working efficiency and automation degree and good in spot welding effect. The working method of the automatic online tin paste dispensing equipment comprises the steps that a program is written in the control device at first; a plate is fixed to the workbench, detected through the detection assembly, and smeared with tin paste through the tin smearing assembly; spot welding is conducted in the position where the tin paste is smeared through the tin welding assembly; and after spot welding is completed, the plate is detected again through the detection assembly. The working method is high in tin dispensing quality, automation degree and working efficiency.

The invention discloses a tinning guide wheel. The tinning guide wheel comprises a fixed plate, a fixed wheel, a first rotating wheel, a second rotating wheel and three bearings. The fixed plate comprises a hole. The three bearings penetrate through the circle center of the first rotating wheel, the circle center of the second rotating wheel and the circle center of the fixed wheel correspondingly. The circle center of the first rotating wheel is flush with the circle center of the fixed wheel, and the radius of the first rotating wheel is equal to the radius of the fixed wheel. The distance of the straight line where the circle center of the first rotating wheel and the circle center of the fixed wheel are located to the circle center of the second rotating wheel is smaller than the sum of the radius of the first rotating wheel and the radius of the second rotating wheel. According to the tinning guide wheel provided by the invention, compared with a traditional guide wheel, the second rotating wheel is additionally arranged, and a tensioning effect is achieved; in order to save materials, the radius of the second rotating wheel is smaller than that of the first rotating wheel; and meanwhile, the tinning guide wheel is practical, durable, easy to manufacture and produce and not prone to being damaged.

The invention belongs to the field of connectors. A wire riveting part tin adding device comprises a tin paste dispensing device, a heating device and a die. The wire riveting part tin adding device is characterized in that the tin paste dispensing device comprises a base, a supporting frame fixed to the base, a sliding table arranged on the supporting frame and a tin dispensing head fixed to the sliding table; a first sliding rail moving left and right is horizontally arranged on the supporting frame, and the sliding table is arranged on the first sliding rail; a second sliding rail moving up and down is arranged on the sliding table, the tin dispensing head is arranged on the second sliding rail, and the first sliding rail and the second sliding rail are driven through a stepping motor; and the heating device comprises a conveying mechanism, a motor controlling running of the conveying mechanism, and a heater providing heat, and the heater is located on the side wall of the conveying mechanism. According to the wire riveting part tin adding device, tin feeding is stable, the production efficiency is high, and the defective percentage is low.

The invention discloses an electromagnetic maintaining type tin wiping device which comprises an electromagnetic device, an electric control assembly, a transition roller and graphite for wiping tin on the roller surface of the transition roller. The electromagnetic device comprises a magnetic rod and an electromagnetic coil; the magnetic rod is arranged in a magnetic field after the electromagnetic coil is electrified; when the magnetic force of the electromagnetic coil is changed, the magnetic rod moves in the direction perpendicular to the transition roller; the top end of the magnetic rod is fixedly connected with graphite; graphite is attached to the roller surface of the transition roller under the action of electromagnetic force on the magnetic rod; the electric control assembly comprises a wire and a power supply; the power supply is electrically connected with the electromagnetic coil through a wire; and a regulator for regulating the magnitude of circuit current is mounted on the wire. According to the tin wiping device, the regulator is arranged to change the magnitude of the circuit current, then the magnitude of the magnetic force of the electromagnetic coil is changed, the height of the magnetic rod is adjusted, graphite on the magnetic rod is attached to the surface of the transition roller, tin wiping is conducted, adjustment is convenient, and the tin wiping effect is good.

The invention discloses a novel optical heater and a preparation method thereof. The novel optical heater comprises ITO conductive glass, wherein two opposite sides of the ITO conductive glass are respectively provided with an electrode strip mechanism; the electrode strip mechanism comprises an A-type low-temperature curing conductive copper glue, a B-type low-temperature curing conductive copperglue and a tin-plated white copper sheet, wherein the A-type low-temperature curing conductive copper glue, the B-type low-temperature curing conductive copper glue and the tin-plated white copper sheet are fixed on the surface of the ITO conductive glass from bottom to top; the problems that when a prior electrode strip is solidified, the required temperature is high, the coating layer of the heating glass is easy to change, the square resistance value is shifted, the square resistance value is increased, the heating power of the heating glass is reduced, and the heating effect is insufficient to the effect of the expected design; and meanwhile, the deviation condition of the square resistance value has no effective linear rule for carrying out pre-judgment which seriously affect the quality reliability of the product are solved.

The invention discloses a copper ecological tinplating water-based process material, which is prepared from the following raw materials in percentage by mass: 0.1 to 3 percent of emulgator, 0.2 to 0.5 percent of dispersing agent, 1 to 3 percent of penetrating agent, 0.5 to 6 percent of organic acid, 0.2 to 8 percent of hexamethylenetetramine, 3 to 9 percent of stannous chloride, 0.3 to 5 percent of neutral salt, 1 to 11 percent of organic salt, and the balance pure water. According to the copper ecological tinplating water-based process material provided by the invention, a formula is reasonable, a direct-current power supply has no need to be added, a heating source is not needed, a copper piece to be plated is adopted as a cathode, and a tin ion of the copper ecological tinplating water-based process material is combined with the copper piece to be plated through an ion exchange manner by utilizing different electric potentials exited in the copper piece to be plated, so that a layer of compact tinplating layer with uniform thickness is formed on a surface of the copper piece to be plated, a tinplating effect is good, and the combination property and the service life of the product are effectively improved; and in addition, a tinplating method is concise in processing steps, easy to implement, high in tinplating efficiency, low in cost, energy-saving and environmentally-friendly, and beneficial to be widely popularized and applied.

The invention relates to lead-free solder low-smoke water-soluble tin spraying soldering flux. The lead-free solder low-smoke water-soluble tin spraying soldering flux is composed of, by weight, 0.5-10% of an organic acid activating agent, 1-5% of organic amine halogen acid salt, 40-70% of an nonionic surface active agent, 0.1-5% of a reducing agent, and the balance deionized water. The lead-freesolder water-soluble tin spraying soldering flux is reasonable in proportion, simple in manufacturing technique, good in wettability and weldability, little in smoke, easy to wash and low in ion contamination, and a tin surface is flat and bright.