116results about How to "Improve dispensing accuracy" patented technology

A hand-held fluid dispenser having an enclosure for supporting a container holding a fluid to be dispensed, and a method of operating such hand-held fluid dispensers. A first proximity sensor is located inside the enclosure immediately adjacent one side of the enclosure, and a second proximity sensor is located inside the enclosure immediately adjacent an opposite side of the enclosure. An actuation circuit is supported inside the enclosure and is electrically connected to the first and second proximity sensors. The actuation circuit produces an actuation signal in response to detecting opposed digits of an operator being simultaneously in close proximity to the first and second proximity sensors.

An adhesive dispensing device comprises a support, a slide rail arranged on the support, a motor, a lead screw driven by the motor, a slide block arranged on the slide rail and screwed with the lead screw, a material pushing piston fixed on the slide block, a charging barrel arranged on the support and a dispenser connected with the charging barrel. A cavity for containing an adhesive solution and a discharging orifice communicating with the cavity are formed inside the charging barrel; and one end of the material pushing piston is inside the cavity to effect on the adhesive solution in the charging barrel. The dispenser comprises a needle-valve and a syringe needle arranged on one end of the needle-valve; an adhesive chamber is formed inside the needle-valve, and a sidewall of the needle-valve is equipped with an adhesive inlet communicating with the adhesive chamber; and a feed inlet is communicating with the discharging orifice. The dispenser also comprises a pull bar and a valve core; the pull bar is movably arranged through one end, which is opposite to the syringe needle, of the needle-valve; the valve core is arranged inside the adhesive chamber and connected to one end of the pull bar; and the pull bar drives the valve core to move along a direction away from or toward the syringe needle, so as to close or open the adhesive inlet. The adhesive dispensing device has high dispensing precision and fast response speed to adhesive break.

The invention discloses a rotary positioning device for a glue-dispensing bent needle head. The rotary positioning device comprises a bracket, a linear cylinder fixing seat arranged on the bracket, a linear cylinder arranged on the linear cylinder fixing seat, a glue-dispensing valve driven by the linear cylinder and the bent needle head arranged at the top end of the glue-dispensing valve, wherein a rotary mechanism fixing seat is also arranged on the bracket; a rotary mechanism is arranged on the rotary mechanism fixing seat and is connected with a synchronous wheel I; a synchronous wheel II is arranged on the glue-dispensing valve; the synchronous wheel I is connected with the synchronous wheel II through a synchronous belt. The rotary positioning device realizes 360-degree rotation of the bent needle head through the synchronous belt and the synchronous wheel structures, so that 360-degree glue-dispensing can be performed on trenches in a product, and the glue-dispensing efficiency and the glue-dispensing precision are greatly improved.

The invention discloses a curved pinhead rotary positioning device for dispensing. The device comprises a bracket, a linear air cylinder fixation seat mounted on the bracket, a linear air cylinder mounted on the linear air cylinder fixation seat, a dispensing valve driven by the linear air cylinder, and a curved pinhead mounted at the top of the dispensing valve. The bracket is also provided with a rotary mechanism fixation seat, on which a rotary mechanism is installed. The rotary mechanism is connected to a No.1 synchronous wheel, the dispensing valve is equipped with a No.2 synchronous wheel, and the No.1 synchronous wheel and the No.2 synchronous wheel are connected through a synchronous belt. 360-degree rotation of the curved pinhead can be realized through the synchronous belt and the synchronous wheel structure according to the invention, 360-degree dispensing of a product inner groove can be realized, and the dispensing efficiency and dispensing accuracy are greatly improved.