41results about How to "Improve spreading quality" patented technology

The invention discloses a novel rapid molding device and a powder feeding and spreading method thereof. The novel rapid molding device comprises a powder feeding cylinder, a molding cylinder, an overflow powder cylinder, a laser window, a powder feeding scraper plate and a bucket type double-scraper plate powder spreading mechanism, and also comprises a powder feeding cylinder heat preservation chamber, a powder feeding cylinder heater, a molding cylinder heat preservation chamber, a molding cylinder heater and a powder feeding cylinder working panel, the powder feeding scraper plate linearlymoves from the left to the right and pushes powder extruded through the lifting of the piston of the powder feeding cylinder to a powder falling opening at the right end of the powder feeding cylinderheat preservation chamber, the powder freely falls into two bucket scraper plates from top to bottom, and the bucket scraper plates horizontally move from the left to the right to push the powder tothe molding cylinder, spread the powder on the molding cylinder and send superfluous powder outside the two bucket scraper plates into the overflow powder cylinder in order to complete one-time powderspreading. The novel rapid molding device and the powder feeding and spreading method thereof have the advantages of effective improvement of the powder feeding and spreading manner, improvement of the powder spreading quality, reduction of material wastes, and improvement of the 3D printing quality and the printing efficiency.

A grain spreader with an active choking funnel is described. The grain spreader includes an upper funnel assembly to receive grain. A choking funnel assembly is in a spring loaded engagement with the upper funnel assembly. The upper funnel assembly directs the grain to the choking funnel assembly. A spreader pan or a grain distributor is positioned beneath the choking funnel assembly. The choking funnel assembly spreads the grain on the spreader pan or the grain distributor.

An agricultural seeding vehicle with soil covering function, including a vehicle body, characterized in that a fixed bracket is fixedly installed in the vehicle body, a limit spring is arranged between the fixed bracket and the push-pull plate, a rotating motor is fixedly installed at the bottom of the slider, and the rotating motor The drive shaft is fixedly installed on the motor shaft, the diverter plate is fixedly installed at the bottom end of the drive shaft, the extension plate is fixedly installed on the outer wall of the left side of the car body, the drive motor is fixedly installed on the extension plate, and the motor shaft of the drive motor is fixedly installed with The driving pulley and the bottom of the extension plate are equipped with turning rollers; this invention has the functions of loosening soil, sowing and covering soil at the same time, and the mechanized operation solves the shortcomings of high labor intensity and heavy workload in the traditional manual sowing process, and speeds up the process. The speed of seeding is improved; the device has an ingenious structure and is easy to operate. The diversion effect on the seeds is realized through the rotating diverter plate, so that the seeds are evenly sown, the quality of seed sowing is improved, and the seed planting effect is enhanced.

The invention discloses a fast mortar-spreading device for building a brick wall, comprising a hopper and two sets of vibrating wheels which are arranged in front of and behind the hopper; the hopperis wide at the top and is narrow at the bottom, the top end of the hopper is a feeding port and the bottom end of the hopper is a discharge end, three strip-shaped mortar outlets are arranged at the discharge end; a plastering iron bar is respectively arranged at the bottom ends of a front surface and a back surfaces of the hopper; two sets of the vibrating wheels are respectively arranged in front of and behind the hopper, each set of the vibrating wheels are formed by four gears, a base plane of each gear is lower 2 centimeters than the base plane of the plastering iron bar. The mortar is conveniently and fast spread, the working efficiency is greatly improved, the labor intensity is reduced and the spreading mortar quality is improved.

The invention discloses a double-roll cloth spreading machine which comprises a bed, a main engine, a cloth pressing mechanism and a mechanical arm cloth clamping mechanism, wherein the cloth pressing mechanism is arranged on the bed, and the mechanical arm cloth clamping mechanism is arranged on the bed in a sliding mode. Two reel cloth supporting mechanisms which are arranged in a front-and-back mode are arranged on one side of the main engine so that double-roll reel cloth feeding is achieved. Two cloth spreading mechanisms are arranged on the main engine and used for spreading cloths on the two reel cloth supporting mechanisms, rear-arranged supports are arranged behind the two cloth spreading mechanisms and used for supporting one reel cloth supporting mechanism arranged in the rear portion to feed the cloths, front-arranged cloth spreading mechanisms are arranged in front of the two cloth spreading mechanisms, pressing rods are arranged among the two cloth spreading mechanisms and the front-arranged cloth spreading mechanisms, the cloths fed by the two cloth spreading mechanisms are overlapped under the pressing rods and fed to the front-arranged cloth spreading mechanisms, cloth feeding mechanisms are arranged in front of the front-arranged cloth spreading mechanisms, and cloth-cutting devices are arranged below the cloth feeding mechanisms. The double-roll cloth spreading machine has the advantages that double-roll reel cloth spreading can be carried out at the same time, single cloth-spreading and cloth-folding are carried out by the adoption of the mechanism arm cloth clamping, positioning is accurate, precision is high, cloth folding is orderly, and working efficiency is high.

The invention discloses a powder falling and powder spreading device for additive manufacturing equipment. The powder falling and powder spreading device comprises a powder spreading operation table,a powder spreading assembly and a driving assembly. The powder spreading assembly is installed on the powder spreading operation table in a front-back single degree-of-freedom sliding mode. The driving assembly drives the powder spreading assembly to slide. The powder spreading assembly comprises a flow guide block, a powder falling opening switching plate and hitting blocks. The flow guide blockis connected to the powder spreading operation table in a front-back sliding mode and is used for powder falling. The powder falling opening switching plate is arranged above the flow guide block andcan slide front and back. The hitting blocks are installed on the powder spreading operation table, are located on the front and rear sides of the powder spreading assembly and are used for hitting the powder falling opening switching plate. The powder falling opening switching plate is provided with a powder falling switching groove extending left and right. The flow guide block is provided withtwo powder falling grooves formed front and back and extending left and right. According to the powder spreading assembly, automatic switching of the powder falling grooves is achieved through hittingin the sliding process, no special driving device needs to be arranged for switching the powder falling grooves in the structure, the structure of the powder spreading assembly is simplified, a control system is simplified, and cost of the additive manufacturing equipment is lowered.

The invention discloses a fertilizer spreading machine, relating to the technical field of agricultural machinery. The fertilizer spreading machine comprises a fertilizer tank, a chassis and a connection frame connected with a tractor, wherein a walking mechanism is arranged below the chassis; a gear pump is fixed on the connection frame; the gear pump is connected with a drive system of the tractor through a transmission shaft; a discharge door is arranged at the rear part of the fertilizer tank; the discharge door is lifted up and down through the opening/closing of the discharge door so as to control the fertilizer spreading quantity; multiple fertilizer spreaders are arranged below the discharge door; the fertilizer spreader comprises a disk, a rotary shaft arranged at the center of the disk and multiple fertilizer spreading slots uniformly distributed along the radial direction of the circumference of the disk; a gear shaft is arranged on the each of the two sides in the fertilizer tank; multiple transfer plates are arranged between the gear shafts; a speed reducer is arranged at the rear part of the fertilizer tank; the gear shafts are driven to run through the speed reducer. The fertilizer spreading machine disclosed by the invention realizes an automatic fertilizer spreading process, greatly improves the fertilizer spreading efficiency and the fertilizer spreading quality, and has the advantages of simplicity in operation, reliability in use, strong adaptability and high operation efficiency.

An automatic cloth finishing device is arranged on a knife rest of an automatic cloth laying machine. The automatic cloth finishing device comprises a drive piece, drive connecting arms, a rotary shaft, first swing arms, second swing arms and a cloth finishing piece. One end of the rotary shaft is fixedly sleeved with one ends of the drive connecting arms. The rotary shaft is supported on the knife rest through multiple supporting seats arranged on the knife rest. The rotary shaft is rotationally connected with a supporting frame. One end of each first swing arm is fixedly connected to the rotary shaft. The other end of each first swing arm is movably connected with one end of the corresponding second swing arm. The second swing arms can rotate around the connecting points of the first swing arms and the second swing arms. The other ends of the second swing arms are connected with the cloth finishing piece. Drive pieces drive the drive connecting arms to rotate. The drive pieces drive the cloth finishing piece to be switched between the cloth finishing position and the collection position in a reciprocating manner through linkage of the drive connecting arms, the rotary shaft, the first swing arms and the second swing arms. The invention further discloses an automatic cloth laying machine with the automatic cloth finishing device.

The invention provides an automatic break point memory returning system for a cloth spreader and a control method, belongs to the cloth spreader control technology field and solves problems of low efficiency and low automation degree caused by manual movement to the break point position after a cloth spreader has a cloth break point in the prior art. The automatic returning system comprises a break point detector, a break point button and a controller used for establishing a coordinate system (X, 0) along the position of a cloth bed in the cloth spreading direction, receiving a break point pulse signal, analyzing and calculating a break point coordinate value (X1, 0) corresponding to the position of the cloth spreader on the cloth bed when the break point pulse signal is generated, receiving a reset signal and further controlling the cloth spreader for moving to the corresponding position on the cloth bed corresponding to the break point coordinate value (X1, 0) for cloth spreading. The automatic break point memory returning system is advantaged in that the break point can be automatically identified, the cloth spreader can be automatically reset to the break point, the automationdegree is high, and efficiency is high.

The invention discloses a feeding device, sowing equipment and an unmanned aerial vehicle, and relates to the field of material conveying. The feeding device comprises a feeding shell and a feeding piece. The feeding shell is provided with an inlet and two outlets, the inlet is used for inputting materials, and the outlets are used for outputting the materials; the feeding part comprises a feeding shaft and blades spirally arranged in the circumferential direction of the feeding shaft, the feeding shaft is movably arranged in the feeding shell, at least part of the blades are opposite to the inlet, and the blades are used for equivalently conveying materials to the two outlets when the feeding shaft rotates. On one hand, the feeding device can convey materials to the two outlets at the same time, the feeding structure can be effectively simplified, the problem that the feeding mode is single is solved, various feeding requirements are met, the feeding device can be suitable for sowing operation with two sowing devices, and therefore the sowing amplitude is fully guaranteed; and on the other hand, the two outlets are used for discharging in an equivalent manner, so that the discharging uniformity of the two outlets can be ensured, the uniformity of the sowing operation of each sowing device is ensured, and the sowing quality is ensured.

The invention discloses a powder laying device suitable for metal selective laser melting forming equipment. The powder laying device suitable for the metal selective laser melting forming equipment comprises a device body, the device body is composed of a scraper bottom plate, an adhesive tape and a scraper cover plate, and a plurality of first threaded holes distributed in a linear array mode are formed in the outer side of the scraper bottom plate. A plurality of second threaded holes distributed in a linear array mode are formed in the surface of the scraper cover plate, and first fastening screws are arranged between the interiors of the first threaded holes and the interiors of the second threaded holes. According to the powder laying device suitable for the metal selective laser melting forming equipment, the device body is fixed to an equipment material boot through second fastening screws, under cooperation of a bottom plate concave groove, a cover plate concave groove and a boss, it is guaranteed that through holes have good supporting performance on the adhesive tape, a deformation tolerance space is reserved, it is guaranteed that a production task is smoothly completedunder the condition of local deformation, and stable and uniform powder laying operation is facilitated; and the powder laying device is provided with a rubber soft scraper between a hard scraper anda brush scraper, and the printing success rate is increased on the premise that the forming quality is guaranteed.

The invention discloses a biological strain throwing device for agricultural straws returning to lands, and relates to the technical field of agriculture. The biological strain throwing device aims atsolving the problems that in a manual throwing process, the phenomenon that local biological strains are too many or too little is likely to be caused, and the phenomenon of incomplete rotting or strain waste is caused. The biological strain throwing device specifically comprises a frame, driving motors are fixedly installed on the two sides of the frame, a rolling wheel is fixedly installed on an output shaft of each driving motor, and a supporting frame is fixedly installed at the top end of the frame. According to the biological strain throwing device, due to the mixing range and the mixing efficiency between biological strains and soil particles, after floating soil is contaminated by the biological strains, the floating soil falls onto throwing blades rotating rapidly, the two throwing blades rotating in a staggered mode throw the falling soil particles to the periphery rapidly, the biological strain throwing efficiency is improved, the labor amount of workers is reduced, the biological strains are distributed more evenly, the straw rotting speed is increased, rotting dead zones are prevented from being left in a field, and the yield is increased.

The invention discloses an improved new energy power vehicle. The improved new energy power vehicle comprises a base and a seeder installed at the top of the base, a seed adding groove is formed in the top surface of the seeder, a through groove is formed in the bottom of the seed adding groove in a penetrating manner, an inclined slide groove is formed in the top of the inner wall on the right side of the seed adding groove, a stirring cavity is arranged at the bottom of the through groove in a penetrating manner, a rotary stirring device is arranged in the stirring cavity, a seed discharge port is formed in the bottom of the stirring cavity in a penetrating manner, a sowing cavity extending to the right side is arranged at the bottom part of the seed discharge port in a penetrating manner, a sowing device is arranged in the sowing cavity, a second slide groove extending left and right is formed in the interior of the seed discharge port in a penetrating manner, a first slide guide groove extending downwards is formed in the extending tail end of the left side of the second slide groove in a penetrating manner, a first slide groove extending upwards is formed in the tail end of the left side of the first slide guide groove in a penetrating manner, and a slide stopping plate extending left and right is smoothly connected with the second slide groove in a matched way. The improved new energy power vehicle is simple in structure and convenient to operate, the electric energy power is clean and pollution-free, and the sowing quality of seeds is improved.

The invention relates to a 3D printer and a powder spreading mechanism therefor. The powder spreading mechanism for the 3D printer comprises a square steel frame, a powder discharge assembly and a powder spreading assembly; the powder discharge assembly comprises a vibration plate, a guide plate structure, a vibration motor and a vibration cam; the top of the vibration plate is fixed to the squaresteel frame; a flexible vibration plate portion is formed at the lower portion of the vibration plate; the guide plate structure is obliquely arranged relative to the vibration plate; a powder outletspace is formed between the vibration plate and the guide plate structure; and the vibration motor is mounted at the bottom of the square steel frame through a connecting frame. The powder spreadingmechanism for the 3D printer is better in powder spreading effect.

The invention discloses a device for improving the powder laying quality in the metal powder bed additive manufacturing process, and belongs to the field of additive manufacturing. The device comprises a supporting base, a lead screw nut, a rolling cylinder, a support, a lifting mechanism, a ball screw and a stepping motor, wherein the supporting base is fixed to a powder laying mechanism of a metal powder bed additive manufacturing device; the stepping motor is located at the upper end of the supporting base, connected with one end of the ball screw through a gear and used for driving the ball screw to rotate; the lead screw nut is in threaded connection with the ball screw and is used for moving up and down when the ball screw rotates; the lifting mechanism is fixedly connected with thelead screw nut and used for moving up and down under driving of the lead screw nut; and the rolling cylinder is fixedly connected with the lifting mechanism through the support and used for moving under driving of the lifting mechanism, so that the pressing force of the rolling cylinder on a powder layer is adjusted. According to the device for improving the powder laying quality in the metal powder bed additive manufacturing process, a powder pile is finally rolled by adjusting the pressing force, so that gaps of powder particles are reduced, and the filling density in the powder laying process is improved.