62results about How to "Guaranteed normal extrusion" patented technology

The invention discloses a fiber reinforced cement-based material (ECC) for 3D printing, preparation, performance evaluation and an application. The cement-based material is prepared by taking sulfatealuminum cement produced by industrial solid wastes fully as an early strength agent and doping polyethylene fiber relatively high in tensile strength and modulus. The cement-based material is introduced to 3D printing concrete and is applied to building 3D printing and a concrete structure or ribless construction of a member or pouring of the concrete structure, has the characteristics of strainstrengthening and multi-crack cracking under action of stretching and bending, has high ductility and high energy consumption, and solves the problem that a 3D printing concrete member is low in mechanical property. The fiber reinforced cement-based composite material is simple in preparation method, low in cost and low-carbon and environment-friendly, and has certain engineering demonstration meaning and social benefits. The invention also provides a 3D printing performance evaluation method of the material, including micro slump test, flowability test and rheological property test.

The invention discloses an anti-sputtering material distributing valve adjustable in flow. The anti-sputtering material distributing valve comprises a valve core assembly and a power assembly. The valve core assembly comprises an upper valve body, a lower valve body, a valve core and a middle valve core. The upper valve body is connected with the upper end of the lower valve body and is of a hollow structure. The lower valve body is of a hollow structure, the side surface of the lower valve body is provided with a feeding inlet for allowing liquid to enter, and the lower end of the lower valve body is provided with a plurality of cylindrical holes serving as large flow openings of the material distributing valve. The valve core is sequentially inserted into the hollow structure of the upper valve body and the hollow structure of the lower valve body from the upper end of the upper valve body, and a small spring is arranged between the valve core and the upper valve body. The middle valve core is arranged between the valve core and the inner wall of the lower valve body and slidably matched with the valve core, a large spring is arranged between the middle valve core and the upper valve body, and the lower end of the middle valve core is provided with a through hole matched with the lower end of the valve core and a plurality of cylinders closely matched with the cylindrical holes in the lower valve body. The power assembly is connected with the upper end of the valve core and used for driving the valve core and the middle valve core to move up and down. The anti-sputtering material distributing valve adjustable in flow has the advantages of being capable of preventing sputtering and residues and adjusting the flow, high in preparation precision and the like.

The invention discloses a toothpaste extruder. The toothpaste extruder comprises a support and an extruding component, wherein the support comprises vertical plates on two sides; a first fixing piece and a second fixing piece are arranged between the vertical plates on the two sides of the support; the first fixing piece is used for fixing the head of a toothpaste shell; the second fixing piece is used for fixing the tail of the toothpaste shell; the extruding component is arranged between the first fixing piece and the second fixing piece and comprises a connecting rod and extruding rolls; chutes are respectively formed in opposite side surfaces of the vertical plates on the two sides of the support; each chute extends from one end of the corresponding vertical plate to the other end of the corresponding vertical plate; two ends of each chute are closed; the connecting rod is arranged in the chutes and can slide along the chutes from the tail of the toothpaste shell to the head of the toothpaste shell; the extruding rolls are respectively arranged on the front surface and the reverse surface of the toothpaste shell and are parallel to each other; the axial direction of the toothpaste rolls is parallel to the axial direction of the connecting rod; and connecting pieces are respectively arranged at two ends of each extruding roll and are connected with the connecting rod.

The invention discloses a stressometer for testing a crustal stress and particularly to a hollow inclusion stressometer for testing the crustal stress. The hollow inclusion stressometer comprises a monitoring module, an epoxy resin cylinder and a guide device. A detection device comprises a video camera placer and a video camera; the video camera placer comprises a hollow upper part and a base; four groups of strain rosettes are uniformly stuck at the periphery of the epoxy resin cylinder; three-dimensional crustal stress is measured through the strain rosettes; and the tapered guide head comprises an adjusting rod and a tapered guide head. As the detection device is arranged at the hollow inclusion stressometer, the flowing condition of colloid in the epoxy resin cylinder under the actionof a traction bar can be monitored in real time, and the colloid in the epoxy resin cylinder are ensured to be extruded completely; and the detection device is convenient to install and can be used for many times, so that the cost is saved.

The invention provides a heating component for a plastic extruding machine and belongs to the technical field of plastic extruding machines. The heating component comprises at least three heating devices installed outside a charging barrel in a sleeving ode and a shell installed outside the heating devices in a sleeving mode to protect the heating devices, wherein the heating devices are infrared heating devices or electromagnetic heating devices. The heating component is simple in structure, convenient to install, and capable of being used in cooperation with a charging barrel of the plastic extruding machine and a screw extruder quickly. Due to the fact that the infrared or electromagnetic heating devices are adopted to replace original resistance wires for heating, heating efficiency is improved, and energy waste is reduced.

The invention belongs to a double-cylinder multistrip single-stage vacuum extruder in a building machinery, which is formed by double machine openings, a machine head, double reamers, double pug cylinders, a vacuum chamber, a pug addition tank base, an outer taper sleeve, an inner taper sleeve, double half reamers, a half cylinder, a blanking tank, a bearing pack, double spindles, a coupling, a speed reducer and a pneumatic clutch. All components are positioned on an underframe. The speed reducer with double output shafts is driven by a motor. The double output shafts of the speed reducer drive the double spindles to rotate by the coupling. The double spindles are connected with the double half reamers through the bearing pack. The double half reamers are connected with the double reamers through the inner taper sleeve and the outer taper sleeve to compress and extrude pug. The double reamers are positioned in the double pug cylinders and the outlet ends of the double pug cylinders are sequentially connected with the machine head and the double machine openings. The vacuum chamber is directly arranged between the double pug cylinders and the half cylinder and is positioned on the double pug cylinders. The blanking tank is arranged on the half cylinder. The double pug cylinders are horizontally arranged side by side. The center distance of the two pug cylinders is equal to the diameters of the reamers. The double spindles take relative rotating motion under the drive of the speed reducer, so that the two reamers also take relative rotating motion under the action of the spindles and materials in the vacuum chamber can be smoothly conveyed into the double pug cylinders without generating the pug return phenomenon.

The invention discloses a garbage bag separation type garbage can for a community. A garbage bag collecting box is mounted at a garbage bag outlet in the top of a can body, two clamping rollers are slidably mounted between a garbage inlet and the garbage bag outlet through a sliding frame, a clamping gap extending in the direction of a sliding rail is formed between the two clamping rollers, and a scratching knife is located below the two clamping rollers. A can cover is installed at the garbage inlet in one side of the can body and connected with the sliding frame through a connecting rod. According to the optimally-designed garbage bag separation type garbage can for the community, switching of the positions of clamping mechanisms is achieved through opening and closing of the can cover, so that garbage throwing, garbage bag scratching and garbage and garbage bag separation are achieved, meanwhile, through relative rotation of the clamping rollers, it is guaranteed that the garbage in the garbage bag is thoroughly extruded out, and the garbage bag is fed into the garbage bag collecting box.

The invention discloses a high-voltage cable sheath extrusion technology and a device. The technology comprises the following steps: a, blowing residual asphalt paint attached to the surface of the cable core; b, threading the cable core into a plastic extrusion mold core in a machine head of a plastic extrusion machine; and c, carrying out plastic extrusion on the sheath by the plastic extruding machine to enable the sheath to be formed on the surface of the cable core. According to the invention, before plastic extrusion, the residual asphalt paint on the surface of the cable core is dried so as to prevent the temperature reduction of the plastic extrusion mold core in the plastic extrusion process, and guarantee the normal extrusion of a non-metallic sheath, and consequently the quality of the non-metallic sheath is enhanced greatly.

The invention relates to the technical field of printed circuit board manufacturing equipment, in particular to a photosensitive layer coating device. The device comprises two conveying devices whichare arranged in an up-down mode and have the same linear speed, wherein one of the conveying devices conveys a circuit board, a plurality of coating assemblies are fixed to the other one conveying device, each coating assembly comprises a corresponding shell, a corresponding glue solution cavity is formed in each shell, the glue solution cavities are provided with openings capable of facing the circuit board correspondingly, pressing plates capable of being attached to the circuit board are slidably connected to the insides of the openings correspondingly, a plurality of pore channels enablingthe glue solution cavities to communicate with the outside are fully distributed in the pressing plates correspondingly, and elastic pieces capable of pushing the pressing plates to slide relative tothe openings are arranged between the pressing plates and the inner walls of the glue solution cavities correspondingly. According to the scheme, coating of photo-sensitive resist is completed by attaching the pressing plates to the surface of the circuit board, and the uniformity of coating of the photo-sensitive resist in the prior art is improved.

The invention discloses a gluing device for building device engineering construction. The device comprises a sliding seat, a glue containing vessel is slidably arranged on the lower wall of the sliding seat, an annular sliding groove corresponding to the glue containing vessel is formed in the lower wall of the sliding seat, the four walls of the glue containing vessel are slidably arranged in the annular sliding groove, a glue injection opening is fixedly formed in the upper wall of the sliding seat, the glue injection opening communicates with the glue containing vessel, a sealing cover is arranged on the glue injection opening, and a glue conveying plate is fixedly arranged on the side wall of the sliding seat and communicates with an inner cavity of the glue containing vessel through a conveying pipe. According to the device, the sliding seat is driven to slide down by virtue of the gravity of the sliding seat, and all parts of the device are driven to transmit through the matching of a clamping gear and a clamping tooth plate, so that glue is extruded and uniformly smeared without being sequentially smeared manually, and the gluing efficiency is greatly improved; and the problem that the attractiveness is affected due to non-uniform coating of glue on the wall is effectively avoided, and the gluing effect is greatly improved.