57 results about "Balsa wood" patented technology

A device for shaping and contouring a fabric or the like in sewing and handicraft projects. In one configuration, the device includes a strip of solid and ductile metal that is configured to be directly adhered to a fabric surface. At lease one layer of acrylic pressure-sensitive adhesive is formed on a bonding of the metal. The shaping device can be bent into various contours and is strong enough to cause material such as tapestry or balsa wood to assume the contours of the shaping device.

A composite core panel has opposite side surfaces for receiving skins to form a composite sandwich panel. The core panel includes a plurality of spaced blocks of low density cellular material such as foam plastics and have opposite side surfaces forming the side surfaces of the core panel and opposite edge surfaces extending between the side surfaces. A plurality of parallel spaced elongated primary strips of structural cellular material such as balsa wood or engineered foam have a higher density and extend between the blocks, and the blocks have side surfaces adhesively attached to edge surfaces of the blocks. A plurality of parallel spaced secondary strips of structural high density cellular material such as balsa wood or engineered foam extend transversely to the primary strips and have end surfaces adhesively attached to the primary strips and side surfaces adhesively attached to the blocks.

The invention relates to the technical field of wind driven generator blades, and particularly relates to a preparation method of a Balsa wood core material of a wind driven generator blade web. The preparation method comprises the steps of slicing, accurate grinding, dehumidification, double-end sawing treatment and gluing, and after pretreatment, shallow groove forming, punching, cloth pasting,deep groove forming, finished product inspection, template manufacturing, line drawing, edge cutting, mark writing, chamfering, IPQC process inspection, plate separation, dehumidification, laying inspection and packaging and warehousing are sequentially conducted. According to shallow groove forming, a plurality of shallow grooves are formed in at least one surface of the core material and are staggered on the surface of the core material to be arranged in a rectangular grid shape, and through holes penetrating through the upper surface and the lower surface of the core material are punched inthe intersection points of the multiple shallow grooves. According to the preparation method, three times of humidity detection are set, the moisture absorption possibility of the core material in the preparation process is further reduced, the risk of corrosion of bacteria and the like sealed in the core material in the operation process is reduced, and therefore the defects of the Balsa wood core material are effectively overcome.

The invention discloses a processing technology of a sandwich balsa wood material for large fan blades. The processing technology comprises the following steps of preparation before processing, polishing of square timber, dust removal of the square timber, drying after coating on the surfaces of the square timber, shallow grooving of the square timber, punching in the square timber, cloth stickingof the square timber, film coating treatment on the surfaces of the square timber and post-treatment processing on the square timber. The processing technology of the sandwich balsa wood material forthe large fan blades relates to the field of processing of sandwich balsa wood materials, and has the beneficial effects that the water content is controlled to be 20% or below before processing, cracking and deformation of wooden products processed later can be avoided, the density of the timber can be controlled through pressure squaring, and related requirements are met; the surfaces of the square timber is coated and then dried, smeared preservative and smeared treating fluid can better permeate into the square timber at the temperature for drying, and therefore the better effect is achieved.

The invention relates to the technical field of sports goods and manufacturing thereof and particularly relates to a novel hockey stick of a hockey goalkeeper. The novel hockey stick comprises a front-section filling plate, a middle-section filling plate, a bolt filling block and a handle; a plurality of layers of glass fiber yarns or carbon fiber yarns cover the outer part of the connected front-section filling plate, middle-section filling plate, bolt filling block to form a goalkeeping plate, wherein the middle-section filling plate is formed by compounding three layers of materials including EPOXY, balsa wood and EPOXY in sequence; and the bolt filling block in the goalkeeping plate is inserted into the handle and the bolt filling block is fixedly connected with the handle. A manufacturing method of the novel hockey stick of the hockey goalkeeper comprises the following steps: manufacturing the front-section filling plate, the middle-section filling plate and the bolt filling block, and connecting the goalkeeping plate with the handle. The novel hockey stick of the hockey goalkeeper and the manufacturing method of the novel hockey stick, provided by the invention, have the beneficial effects that (1) the flexibility of kicking is increased; (2) the hockey control speed is improved; (3) the vibration resistance is improved; (4) the bounce of the goalkeeping plate is increased; (5) the goalkeeping plate is not easy to break, bend and deform when receiving a certain impact force; and (6) the service life is long.

Shaped articles made of balsa veneers, balsa chips, balsa strands or balsa strips, which are oriented in the same direction according to their grain direction, and the grain direction of the individual chips deviates by 0° to 30° from the direction of the axis of the grain. The spaces of the adjacent balsa veneers, chips, strands or strips are filled with a, for example foamed, adhesive, the density of which may be the same as or close to the density of the surrounding balsa wood.

Fastening element (100) for a porous material, in particular balsa wood, comprising a fastening head (1) designed to absorb torque in both directions of rotation about a main axis (10), and a shaft (2) which extends from the fastening head (1) and ends in a tip (3) at the end opposite the fastening head. The shaft (2) has an external thread (4) along at least part of its extension in the directionof the main axis (10) in order to be able to screw the fastening element (100) into the material.

The invention belongs to the technical field of an automobile and particularly relates to an off-road vehicle composite trailing arm and a manufacturing method thereof. The trailing arm includes a support frame layer, an adhesive film layer and a carbon fiber material layer are laid on the outer side of the supporting frame layer, and a supporting frame is composed of a balsa wood material, an aluminum material and super glue. The trailing arm is advantaged in that the mass of the trailing arm is effectively reduced while good mechanical properties are guaranteed, and the trailing arm has goodimpact resistance, is not prone to breakage and breakage, still has a high safety coefficient under severe driving conditions and guarantees safety of a driver, a new structural connection form for the structure is provided, the aluminum material is partially pre-buried in the carbon fiber material layer, a part of the aluminum material is externally processed into the mounting hole, so a weldingerror of a traditional trailing arm structure is eliminated.

The invention relates to the technical field of sports goods and manufacturing thereof and particularly relates to a novel hockey stick of a hockey goalkeeper. The novel hockey stick comprises a front-section filling plate, a middle-section filling plate, a bolt filling block and a handle; a plurality of layers of glass fiber yarns or carbon fiber yarns cover the outer part of the connected front-section filling plate, middle-section filling plate, bolt filling block to form a goalkeeping plate, wherein the middle-section filling plate is formed by compounding three layers of materials including EPOXY, balsa wood and EPOXY in sequence; and the bolt filling block in the goalkeeping plate is inserted into the handle and the bolt filling block is fixedly connected with the handle. A manufacturing method of the novel hockey stick of the hockey goalkeeper comprises the following steps: manufacturing the front-section filling plate, the middle-section filling plate and the bolt filling block, and connecting the goalkeeping plate with the handle. The novel hockey stick of the hockey goalkeeper and the manufacturing method of the novel hockey stick, provided by the invention, have the beneficial effects that (1) the flexibility of kicking is increased; (2) the hockey control speed is improved; (3) the vibration resistance is improved; (4) the bounce of the goalkeeping plate is increased; (5) the goalkeeping plate is not easy to break, bend and deform when receiving a certain impact force; and (6) the service life is long.

The invention discloses a storage, transportation and quality guarantee method for megawatt fan blade sandwich material balsa wood. The method comprises the following steps: processing raw materials, selecting proper balsa wood raw wood, drying the balsa wood, carrying out thicknessing treatment after drying, and carrying out preservative treatment and airing after thicknessing treatment. And packaging treatment is conducted, the balsa wood is placed on a tray, a plurality of limiting columns are fixedly installed on the top of the tray, and the limiting columns are located on the periphery of the balsa wood. The balsa wood tray has the beneficial effects that the stability of balsa wood on the tray is improved, meanwhile, air flow around the balsa wood is accelerated, the influence of damp air on the balsa wood is reduced, the tray can be moved through the rolling wheels when needing to be moved, the tray is supported through the supporting plates when not needing to be moved, transportation and storage of the balsa wood are facilitated, and the practicability of the balsa wood tray is improved. And the two adjacent trays are connected through the connecting plates, so that the placing stability of the trays is improved, the stability of balsa wood during transportation is improved, and the convenience is improved.

The invention discloses an automatic conveying and sorting mechanism for wind power blade balsa wood and its application. The mechanism comprises an automatic spreading and avoiding device, a conveyor unit and an automatic conveyor lifting unit connected in sequence, and the automatic conveyor lifting unit is connected in sequence. It is connected with the automatic unloading mechanism, and the automatic support and avoidance device is connected with the automatic feeding mechanism. The automatic feeding mechanism is provided with a code identifier. This device not only solves the automatic loading and unloading process of balsa wood at the head and tail ends of the mold and the mold turning process. The problem of mechanical interference in the blade production process is realized, and the fully automatic conveying and sorting of balsa wood in the blade production process is realized. The whole process does not require human intervention, which solves the problems of labor consumption, low efficiency and chaotic management in the process of balsa transportation, and greatly improves the transportation and distribution efficiency of balsa in the blade production process.

The invention discloses a method for making an aeroelastic wind tunnel test model of a wind turbine blade, including a reasonable simplification similarity criterion for aeroelastic model of a wind turbine blade, a design method for the equivalent section of the aeroelastic model, and a method for making a frame segment / coat of the aeroelastic model. Firstly, based on kinematic equivalence, a reasonable simplification similarity criterion for the aeroelastic model of wind turbine blades is derived. Then, the variational asymptotic equivalent section method is proposed to design a high-precision equivalent wind turbine blade model with special-shaped section, and realize the aero-stiffness-mass of the blade aeroelastic model. Scale-mapped aero-elastic model design; finally, relying on high-precision 3D printing to obtain the aero-elastic model frame segment, and then splicing the full-length model through the connecting ribs at a single point, filling the hollow area with balsa wood chips to polish the coat, pasting the weighted lead sheet on the trailing edge, and the front Edge paste rough strips and gap filling sponge to complete the inflatable model frame segment / outer garment. The invention supplements the deficiencies of the existing domestic and foreign wind turbine blade aeroelastic model design and manufacture methods.