12 results about "Pointed tooth" patented technology

The invention provides an adjustable lower die for a bending machine, which relates to the technical field of metal plate plastic processing and forming, and comprises a die outer shell, a module spacing adjusting mechanism, two groups of adjusting module single blocks, a first adjusting module, a second adjusting module, a third adjusting module, a fourth adjusting module and a fourth adjusting module, the electric telescopic rod is used for controlling the toothed plate to ascend and descend so that the pointed tooth block and the tooth groove can be clamped in a self-adaptive mode, independent rigid locking is provided to protect the transmission lead screw from being laterally pressed and abraded, moving fine adjustment is achieved through the hole diameter difference between the round rod and the through hole, accumulated tolerance is thoroughly eliminated, and the bending precision is ensured. And meanwhile, the air cylinder drives the trapezoidal block to jack so that the bottom height can be flexibly adjusted to adapt to plates with different thicknesses, the flexible supporting mechanism is introduced between the supporting table and the lower die cushion block, vertical downward pressing impact is effectively absorbed and buffered through deformation of the elastic piece and rotation of the damping rod, and therefore the overall service life of the die is greatly prolonged, and the system safety and stability are improved.

The utility model discloses a spine endoscope minimally invasive surgery embracing type spike tooth bone grasping forceps, which comprises a first clamping jaw, a second clamping jaw, a fixing rod and a handle, the first clamping jaw is rotatably connected with the second clamping jaw, the second clamping jaw is fixedly arranged at one end of the fixing rod, the handle is arranged at the other end of the fixing rod, and the handle is fixedly connected with the first clamping jaw. The handle is used for controlling the rotating angle of the first clamping jaw relative to the second clamping jaw. According to the embracing type spike tooth bone grasping forceps for the spine endoscope minimally invasive surgery, the opening angle is increased through the first clamping jaw and the second clamping jaw, meanwhile, when a broken bone is grasped, the second clamping jaw is matched with the arched first clamping jaw, the first sharp teeth and the second sharp teeth can stretch into the side face of the broken bone to embrace the bone block, and the broken bone is convenient to grasp.

The utility model discloses a tooth tip chain transmission mechanism with a material pressing wheel. And a pressing wheel mechanism is arranged on a chain bracket of the tooth tip chain transmission mechanism. The material pressing wheel mechanism comprises a material pressing frame and a material pressing wheel arranged on the material pressing frame. The material pressing frame is arranged on the chain bracket through a spring guide column mechanism. The wheel face of the material pressing wheel is provided with tooth tip grooves allowing sharp teeth of the tooth tip chain to penetrate through. And the wheel surface of the pressing wheel is made of an elastic material. Sheet materials conveyed on the tooth tip chain are clamped through the pressing wheel, the situation that the sheet materials are pulled and fall off due to the gravity is avoided, and friction force caused by clamping can be reduced through friction rolling of the pressing wheel when the pressing wheel clamps the sheet materials through the spring and elastic materials of the pressing wheel.

The utility model discloses a belt sander sharp-tooth rubber wheel for polishing, which belongs to the technical field of gears and comprises a hub, rubber sharp teeth are detachably sleeved on the periphery of the hub, and each rubber sharp tooth comprises a tooth tip portion and a pressing portion. A boss is integrally formed on the inner side wall of the tooth tip part, one side of the hub is inserted into the boss, the other side of the hub is connected with a pressing part through a quick release assembly, and the outer side wall of the pressing part abuts against the inner side wall of the tooth tip part. And a plurality of anti-rotation blocks are arranged between the tooth tip part and the hub. According to the sharp-tooth rubber wheel of the belt sander for polishing, the sharp-tooth rubber which is abraded unevenly or damaged can be replaced conveniently, so that the service life of the sharp-tooth rubber wheel is prolonged, and the using effect of the sharp-tooth rubber wheel is guaranteed.

The wind power cylindrical nut convenient to disassemble and fixed in a tooth tightening mode comprises a wind power nut body, an auxiliary assembly is arranged outside the wind power nut body, and a plurality of locking assemblies are evenly arranged inside the wind power nut body in an annular mode. The locking assembly comprises a limiting groove, the limiting groove is formed in the wind power nut body, the exposed part of the clamping ball is effectively and slowly squeezed into the limiting groove through downward movement of the auxiliary assembly, at the moment, the clamping ball drives the sharp-tooth locking rod to move, the sharp-tooth part of the sharp-tooth locking rod is moved out and embedded into the surface of a bolt, and therefore the wind power nut can be firmly locked. Locking between the wind power nut body and the bolt is effectively achieved, the connection tightness is improved, when the wind power nut body needs to be disassembled, the auxiliary assembly is moved upwards, the clamping ball is gradually free of external force limitation, at the moment, the clamping ball is gradually reset due to the resilience force of the spring, and meanwhile the sharp tooth locking rod is integrally moved into the limiting groove; locking between the wind power nut body and the bolt is relieved, and follow-up dismounting of the wind power nut body is facilitated.

The utility model discloses a hard alloy circular saw blade for a trephine, which relates to the technical field of cutting and comprises a trephine body, a plurality of groups of saw teeth arranged circumferentially at equal intervals are arranged on the trephine body, each saw tooth consists of a left helical tooth, a right helical tooth and a sharp tooth, the right helical tooth is positioned between the left helical tooth and the sharp tooth, and the cutting edge angle epsilon of the left helical tooth and the right helical tooth is 5 degrees. The tool cutting edge angle epsilon of the sharp teeth is 15 degrees, the sharp teeth are in left-right inclined symmetrical design, centripetal angles with Tp being 1 degree are designed on the side faces of the left inclined teeth, the right inclined teeth and the sharp teeth, and circumferential angles with Tr being 3 degrees are designed on the side faces of the left inclined teeth, the side faces of the right inclined teeth and the side faces of the sharp teeth. Due to the design of the tool cutting edge angle, the cutting amount can be uniformly distributed during cutting, the cutting efficiency is improved, meanwhile, tipping during cutting is avoided to the greatest extent, and the service life of a product is prolonged; due to the design of the centripetal angle and the circumferential angle, the friction of the tooth side face to the workpiece is reduced, the cutting resistance is remarkably reduced, the temperature of the workpiece is reduced, and it is guaranteed that the cutting face of the workpiece such as wood, aluminum and plastic is smooth and free of focal marks.

The utility model discloses a tooth tip chain conveying and discharging mechanism and a tooth tip chain conveying mechanism. And a tooth top chain conveying and discharging mechanism is arranged at the conveying tail end of the tooth top chain conveying mechanism. The tooth tip chain conveying and discharging mechanism comprises overturning and pressing mechanisms oppositely arranged on the chain frame and a stripping and jacking mechanism located between the overturning and pressing mechanisms. The overturning and pressing mechanism comprises an overturning frame, a pressing wheel and an overturning cylinder. The material pressing wheels are densely arranged on the overturning frame and provided with tooth tip grooves. And the turnover frame can turn over and is connected with the turnover cylinder. When the overturning frame is overturned to the axis of the material pressing wheel, the sharp teeth of the tooth top chain can be positioned in the tooth top grooves, so that the wheel surface of the material pressing wheel can be pressed on a sheet material punctured by the sharp teeth of the tooth top chain; when the pressing wheel is separated from the tooth tip chain, the falling jacking mechanism can push the sheet stock on the tooth tip chain away from the tooth tip chain, and stripping of the sheet stock on the tooth tip chain is completed.

The utility model relates to the technical field of welding, and discloses an ultrasonic welding head and ultrasonic welding equipment. The ultrasonic welding head comprises a welding head connecting part, a welding head force storage part and a welding head emitting part, the welding head connecting part is used for being connected with an ultrasonic welding equipment body, the welding head emitting part is connected with the welding head connecting part through the welding head force storage part, and the welding head emitting part is provided with a plurality of welding tooth structures in a truncated square cone shape. A first included angle is formed between the arrangement direction of the welding tooth structures and the edge of the welding head emitting part, and the value range of the first included angle is 10-80 degrees. Due to the design of the helical teeth, the teeth in the moving direction of the welding head are sharp teeth, so that the teeth of the welding head can be more effectively inserted into a deeper position, energy is concentrated to a welding area, and the welding efficiency is improved. Due to the design of the helical teeth, flowing of materials in the horizontal direction can be better controlled, and overflow in the welding process is reduced.

The application discloses a gear extrusion cigarette end extinguishing device, characterized in that two opposing force receiving cigarette extinguishing sharp tooth rollers under spring action are arranged between two parallel positioning wall plates, wherein an arc-shaped shaft hole corresponding to the position of the positioning wall plate is matched with the bearing at the two ends of the shaft, a main drive gear and a sub drive gear and synchronous transmission gears for driving the rotation of the two cigarette extinguishing sharp tooth rollers are arranged, the main drive gear is matched with a speed reducer motor, and a system that can make the two cigarette extinguishing sharp tooth rollers rotate towards each other and move to both sides to extrude the burning part of the cigarette end when the cigarette end passes through to make the cigarette end extinguish is formed.

The utility model provides a novel slurry throwing blade group suitable for paddy field operation, which comprises paddy wheels, slurry throwing cutters, a cutting disc and a cutter shaft, the paddy wheels, the slurry throwing cutters and the cutting disc are all mounted on the cutter shaft, the number of the paddy wheels is two, and the paddy wheels are respectively positioned at the left end and the right end of the cutter shaft; at least five large sawtooth-shaped cutting edges are arranged in the circumferential direction of the cutting disc, each large sawtooth-shaped cutting edge is provided with inclined sharp teeth, one tooth surface of each large sawtooth-shaped cutting edge is a short plane, the other tooth surface of each large sawtooth-shaped cutting edge is a long arc-shaped surface, and each long arc-shaped surface is provided with a plurality of small tooth-shaped cutting edges which are arranged in a straight line. The straw cutting and slurry crushing effects of the slurry throwing blade group are improved, and a loose and uniform soil environment is created for the growth of rice roots.

The invention discloses a sampling device for quantitative analysis of multi-source pollution in the technical field of sewage sampling, which comprises a sampling tank, a water pump, a water pipe, a power box and a breaking mechanism, a motor and a gear set driven by the motor are arranged in the power box, the breaking mechanism comprises a rotating shaft, one end of the rotating shaft is connected with the gear set, and the other end of the rotating shaft is connected with the water pump. A breaking cutter with a plurality of sharp teeth is arranged at the other end of the rotating shaft; when the water surface floating layer is broken, the breaking knife is inclined, and the lower end of the breaking knife is connected with the rotating shaft and the upper end is far away from the rotating shaft; the water pipe is arranged on the power box in a winding and unwinding manner; during sampling, the motor stops running, and the water pipe downwards extends into the water body from the side of the transmission shaft. According to the scheme, through the power box and the breaking mechanism, the floating layer is actively broken before sampling, the water pipe is prevented from stretching into the water body, the problem that an existing sampling device cannot efficiently sample when encountering hard floating objects is solved, and the sampling efficiency and the success rate are improved.

This utility model discloses a spiral fixing head, including a fixing nail and a reinforcing member. The reinforcing member includes a central tube with several reinforcing wing plates connected to it and extending radially around its outer periphery. One end of the central tube has a conical countersunk hole, and the other end has several pointed teeth extending in the opposite direction to the conical countersunk hole. The fixing nail includes a rotating part that matches the conical countersunk hole and is frustum-shaped. A nail body is connected to the rotating part. The nail body includes a smooth shaft, a stud, and a self-tapping head. A tower-shaped spring embedded in the conical countersunk hole is fitted onto the rotating part. The smooth shaft is located inside the central hole of the central tube. The stud and the self-tapping head are both located outside the central hole of the central tube. This fixing head connects the fixing nail and the reinforcing member to the substrate by self-tapping screwing in. Because it uses a spiral insertion method, it can be used on slightly softer substrates, overcoming the limitation of conventional fixing heads cracking when used on wood. Combined with the tower-shaped spring, the fixing head connection is tight and reliable.