5results about How to "Small weight error" patented technology

The utility model belongs to the field of industrial casting, particularly relates to an accurate sand adding device for a horizontal molding line, and provides the following scheme aiming at the problems that a conveying belt is unstable in feeding during feeding and molding sand is inconvenient to discharge when the feeding is excessive in the prior art: the accurate sand adding device comprises a rack and a hopper arranged at the top of the rack, a plurality of weighing sensors are fixedly mounted between the bottom of the hopper and the top of the rack, one side of the hopper is fixedly connected with a through mounting pipe, one end of the mounting pipe is communicated with the hopper, the bottom of the mounting pipe is fixedly connected with a discharging pipe for discharging raw materials, and a through driving shaft is rotationally connected between the two ends of the mounting pipe; according to the molding sand feeding device, excessive molding sand in the hopper is discharged through the feeding blades, so that the weight error of the molding sand in the hopper is reduced, the sand feeding accuracy is improved, meanwhile, the hopper can vibrate, the molding sand is prevented from staying and being attached to the interior of the hopper, and the feeding accuracy is further improved.

This utility model relates to the field of PET cold-pressed sheet processing technology, and discloses a PET cold-pressed sheet stacking and counting device, comprising: a frame, including a frame plate and several support legs, the support legs being fixedly disposed below the frame plate; a counting component, including a weighing scale and a display screen, the weighing scale being fixedly disposed above the frame plate, the display screen being fixedly disposed on the front side of the frame plate, and a control board electrically connected to the weighing scale being built-in; an auxiliary packaging component, including a strapping groove and positioning rods, the strapping groove being disposed on the frame plate, and the positioning rods being fixedly disposed at the four corners above the frame plate; and a compaction mechanism, including a pressure plate and a support, the support being fixedly disposed on the rear side of the frame plate, with a movable plate rotatably connected to its upper end, one end of the movable plate being driven to rotate by a stepper motor fixedly disposed on the support, and the pressure plate being disposed below the extended end of the movable plate and being driven to rise and fall by a cylinder fixedly disposed on the movable plate. The advantages of this utility model are: accurate counting, small error, and easy packaging after counting.

The invention relates to the technical field of aircraft vibration experiments, and discloses aircraft ground resonance test equipment with visual entrance, comprising a fixing device; the fixing device comprises a rack, a lateral supporting frame, a forward supporting frame and a ground fixing mechanism. A lifting device; the lifting device is arranged in the rack and comprises lead screw lifting mechanisms, guide mechanisms and stroke limiting mechanisms, wherein the lead screw lifting mechanisms are installed at the four corners of the rack. A driving device; the driving device is arranged below the rack; the air spring device is arranged on the supporting plate; and the supporting device is arranged above the air spring device. According to the fixing device, the foldable extra supporting frame design is adopted, the lateral supporting frame prevents the situation that the aircraft is subjected to uneven lateral stress and rolls over together with the device, and the forward supporting frame prevents the situation that the aircraft is subjected to uneven forward and backward stress and rolls over together with the device.

The utility model discloses a raw material weighing device for concrete retarder production relates to weighing device technical field, the utility model discloses a support frame, the support frame top fixedly connected has and places the bucket, the support frame bottom is provided with the feeding box, the feeding box top is provided with the weighing assembly, the weighing assembly is including the weighing box of fixed connection in the feeding box top, the weighing board of fixed connection in the weighing box inside. The utility model discloses a dynamic weighing sensor and the closed loop control of automatic control valve realize accurate dosing, and the raw material is from the placement barrel and enters the weighing box through the discharge pipe, and the flow sensor monitors the dosing amount, and the dynamic weighing sensor synchronously gathers weight data. When the weight reaches the set value, the automatic control valve closes immediately, and then the first hydraulic cylinder drives the push plate and pushes the raw material into the falling pipe, and the closed loop control reduces the weighing error, avoids the manual operation deviation, ensures the retarder proportioning accuracy, and improves the product performance consistency.

The utility model belongs to the technical field of moxa stick rolling equipment, and provides an accurate metering and discharging mechanism of a strip rolling machine. Comprising a stock bin, a controller, a first motor, a second motor and an air pump. A leaf stirring roller is arranged in the stock bin, a discharging port is formed in the lower end of the stock bin, a large material stirring roller and a small material stirring roller are arranged in the discharging port side by side, the leaf stirring roller and the large material stirring roller are both driven by a first motor, and the small material stirring roller is driven by a second motor. A weighing channel is arranged below a discharging port of the stock bin, the upper portion of the weighing channel is communicated with the discharging port, a tray is arranged at the bottom of the weighing channel, and a weighing sensor is arranged at the bottom of the tray and electrically connected with a controller. A material pushing plate is arranged at the front end of the material weighing channel and driven by a material pushing air cylinder, a material pressing plate is arranged above the rear section of the material weighing channel and located on the outer side of the material bin and driven by a material pressing air cylinder, and a baffle is arranged at the rear end of the material weighing channel and driven by a baffle air cylinder. Compared with the prior art, needed moxa is weighed and counted through the weighing sensor, and it is guaranteed that the weight error of rolled moxa sticks is very small, and the weight is accurate.