31results about How to "Fast rebound" patented technology

The invention discloses a flexible silica gel screen protection film, and belongs to the technical field of protection films. The flexible silica gel screen protection film mainly structurally comprises a PETrelease film, a hardened coating coated on the release surface of the PET release film, an organic silica gel layer coated on the hardened coating, an organic silicon pressure-sensitive adhesive layer coated on the organic silica gel layer, and a fluorine release film adhered on the organic silicon pressure-sensitive adhesive layer, wherein the hardened coating, the organic silica gel layer and the organic silicon pressure-sensitive adhesive layer are compounded into a use layer; the surface hardness of the use layer is HB-2H, the light transmittance is greater than or equal to 91%, the haze is less than or equal to 1%, and the softness is 25A-60A; and the thickness ratio of the hardened coating to the organic silica gel layer to the organic silicon pressure-sensitive adhesive layer in the use layer is (2-4): (40-50): (20-30). The flexible silica gel screen protection film has better flexibility and has more excellent fitting performance for curved edge amplitudes of an AF screen and a 2.5 D/3D screen and is not degummed during die cutting and can be directly fit with a curved screen for use without hot-pressing preforming, and can play a better role in protecting existingcurved screen electronic equipment.

The invention discloses a damping structure with flexible airtight materials wrapping soft foaming materials in a sealing mode and relates to a damping structure for a shoe, in particular to the damping structure which is made of the soft foaming materials and applicable to a sole. The damping structure with the flexible airtight materials wrapping the soft foam materials in the sealing mode comprises a soft foaming body, wherein a flexible airtight wrapping layer wraps the soft foaming body in a sealing mode, the flexible airtight wrapping layer is made of the airtight materials, and the flexible airtight wrapping layer covers the outer wall of the soft foaming body. According to the structure, the flexible airtight wrapping layer wraps the soft foaming body in the sealing mode, and when external force acts on the soft foaming body, gas which is sealed in cavities formed in the foaming body cannot flow out of the foaming body arranged inside the flexible airtight wrapping layer and can only be compressed. Therefore, the buffering and damping effect is achieved.

The invention relates to a die cutting device for conductive cloth indentation lines. The die cutting device is used for carrying out die cutting on indentation lines on a conductive cloth material strip, and comprises an upper die base and a lower die base which is arranged below the upper die base and matched with the upper die base. The lower surface of the upper die base is provided with an indentation line cutter, and the lower die base is provided with a silicone pad matched with the indentation line cutter and a material blocking mechanism matched with the conductive cloth material strip. Compared with the prior art, through arranging the silicone pad on the lower die base, the conductive cloth material strip and the indentation line cutter are supported flexibly from below, the indentation line cutter is ensured to be capable of being pressed into the conductive cloth material strip completely, so that the depth of the indentation lines is obvious, the compactness is good, therebound speed is slow, the imprint is not prone to recede and disappear, the retention is good, and the conductive cloth material strip can be effectively prevented from being lifted by the indentation line die cutter, thereby ensuring the normal proceeding of the continuous die cutting process.

The invention relates to polyurethane flame-retardant resilient foam. The polyurethane flame-retardant resilient foam has good resilience mechanical properties. The polyurethane flame-retardant resilient foam has uniform pores. A rolling experiment proves that compared with the traditional resilient foam, the polyurethane flame-retardant resilient foam has a longer service life and a faster rebound rate. The polyurethane flame-retardant resilient foam comprises 6-12 parts of silica nanopowder and overcomes the defect of no ultraviolet absorption component in the traditional resilient foam. When being used outside, the polyurethane flame-retardant resilient foam is not fast aged under UV. The polyurethane flame-retardant resilient foam saves a protective sleeve cost and widens a resilient foam application range.

The invention relates to a production method of polyurethane flame-retardant highly-resilient foam. The polyurethane flame-retardant highly-resilient foam prepared by the method has better resilient mechanical properties, is even in gas holes. Rolling experiments prove that the polyurethane flame-retardant highly-resilient foam prepared by the method has a longer service life and a faster resilient speed compared with traditional resilient foam. The polyurethane flame-retardant highly-resilient foam prepared by the method also includes 6-12 parts of nano silica powder to make up for the defectthat the traditional resilient foam has no ultraviolet (UV) ray absorption component. When the polyurethane flame-retardant highly-resilient foam is used outdoors, the rapid UV aging can be avoided; the protective sleeve cost is also saved, and the use range of the polyurethane flame-retardant highly-resilient foam is more wide.

A rubber elastomer used for the expanding head of tube expander is prepared from fluorine rubber as base material, teflon powder, silicone, MoS2 powder, calcium hydroxide powder, magnesium oxide powder, zinc oxide powder, basic lead phosphite, and carbon black. Its advantages are uniform expansion force, less adrasion and long service life.

The invention belongs to the technical field of chain-link fence machines, and particularly relates to a single-needle machine of chain-link fences which comprises an underframe, a driving mechanism,a main transmission mechanism, a mesh knitting mechanism and a turnover plate mechanism; the mesh knitting mechanism is slidably connected to the underframe and can reciprocate relative to the underframe; the mesh knitting mechanism comprises a knitting frame, a plurality of positioning needles, a rotating shaft and a first auxiliary transmission mechanism, the plurality of positioning needles arefixed on a fixing bar fixed on the knitting frame, each positioning needle is connected with the rotating shaft through a rope, the rotating shaft is rotatably connected to the knitting frame and isconnected with the driving mechanism through the first auxiliary transmission mechanism, and the rotating shaft is driven to rotate; original collision type transmission of the positioning needles ischanged into rope transmission, so that noise is reduced, components can be protected to a great extent, and the service life of each positioning needle is prolonged; the rebound speed of the positioning needles is greatly also increased by adopting the rope transmission, and therefore, one positioning needle can be used for replacing the original two positioning needles.

The invention discloses a composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system, and relates to the technical field of composite bow design, production and manufacturing and debugging detection. The composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system comprises an overall assembly, wherein the overall assembly comprises a first pulley block and a second pulley block, and placing grooves are formed in the surfaces of the outer walls of the first pulley block and the second pulley block. According to the composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system, hanging points of the first pulley block and the second pulley block are newly designed, so that only one integrated bowstring is used for being converted into two integrated bowstrings which are symmetrical left and right in a penetrating mode, so that distinguishing is not needed during production, manufacturing and assembling, and the cost is reduced; and one integrated bowstring is used, the structural layout of the two integrated bowstrings is achieved, the limitation of the left-right and deflection freedom degrees of the integrated bowstring is achieved, and the same tensioning degree of the two integrated bowstrings can be achieved without using an additional floating balance block, so that the problems of shooting precision caused by the freedom degree of the integrated bowstring, the number of the integrated bowstring, the manufacturing cost of the floating balance block and the assembling and debugging difficulty are solved.

An anti-radiation aerogel felt comprises a textile layer, a mixed layer and an aerogel layer, the mixed layer is composed of an upper layer and a lower layer, the aerogel layer is wrapped between theupper layer and the lower layer, the textile layer is arranged outside the mixed layer, the textile layer, the mixed layer and the aerogel layer are formed in a composite mode through a composite process, and the mixed layer is formed by weaving a plurality of bamboo fiber strips in a crossed mode. The gaps between the bamboo fiber board layers are filled with fine graphite blocks, the thickness of the graphite blocks is the same as that of the bamboo fiber board layers, and the graphite blocks and the bamboo fiber board layers are bonded and fixed through glue to form a mixed board layer. Thematerial provided by the invention can play a role in protecting similar fast neutron rays. The anti-radiation aerogel felt can be applied to heat insulation of equipment with a radioactive medium, the total amount of radioactive rays entering the surrounding environment can be greatly reduced while heat preservation is achieved, and the anti-radiation aerogel felt plays a very positive role in industrial radiation protection safety and personnel health.

The invention discloses a lever arm supporting pad for a keyboard. The supporting pad comprises a base, a supporting pad body, a pressure-bearing wear-resisting plate, a reinforcing silk screen layer,a sound-absorbing fiber layer, a foam layer, a bamboo charcoal fiber layer, a damping coating layer, a spring layer and a camphor oil insect expelling layer. The supporting pad body is installed on the inner wall of the top of the base. A pressure-bearing wear-resisting plate is mounted on the inner wall of the top of the supporting pad body. A reinforcing silk screen layer is mounted at the bottom of the pressure-bearing wear-resisting plate. A damping coating layer is mounted at the bottom of the reinforcing silk screen layer. A sound-absorbing fiber layer is mounted at the bottom of the damping coating layer. A foam layer is mounted at the bottoms of the sound-absorbing fiber layer. A spring layer is mounted at the bottoms of the foam layer. A bamboo charcoal fiber layer is mounted atthe bottom of the spring layer. A camphor oil insect expelling layer is mounted at the bottom of the bamboo charcoal fiber layer. The lever arm support pad for the keyboard has the advantages that thelever arm support pad for the keyboard is capable of reducing noise, dehumidifying and preventing insects and is convenient to mount.

The invention discloses a one-way valve. The one-way valve comprises a valve body, and a valve plate mounted in the valve body and capable of being bent in one direction; the valve plate comprises anintake hole plate tightly connected with the inner side wall of the valve body, and a rubber ring connected to the intake hole plate and capable of being bent in one direction; when no gas enters thevalve body, the rubber ring is tightly bonded with the valve body; and when the gas enters from an intake port of the valve body, the rubber ring is bent to form a gap with the valve body. As the rubber ring and the intake hole plate are tightly connected, when the closing is needed, the rebound speed of the rubber ring can be accelerated through the intake hole plate to guarantee no dust to return to the intake port to damage various valves on an intake pipe.

The invention discloses a cold-resistant PVC oil-proof film with high tensile strength and a preparation process thereof. The invention particularly relates to the technical field of PVC film preparation. The film comprises a base film and an elastic film layer, wherein the elastic film layer coats the surface of the base film. The base film is prepared from the following raw materials in parts bymass: 50-80 parts of resin, 5-8 parts of a cold-resistant agent, 6-10 parts of a main plasticizer, 3-5 parts of a modifier, 0.8-1.5 parts of a filler and a proper amount of an auxiliary plasticizer.The PVC oil-proof film is prepared by the steps of mixing the raw materials, preparing a base film, preparing high-elasticity resin, rolling, drying and molding. The EVA resin and the PVC resin of which the average polymerization degree is greater than 2000 are used as main materials, the dosage ratio of the main plasticizer to the auxiliary plasticizer is controlled, and the elastic film layer coats the base film, so that the cold resistance and the tensile strength of the PVC oil-proof film are greatly improved.

The invention discloses a high-precision semiconductor luminescence detection device. The device comprises a supporting frame; the top of the supporting frame is in bolted connection with a workbench; the top of the workbench is in bolted connection with a detection box; the left side of the front surface of the detection box is hinged with a first box door through a hinge; the front surface of the first box door is in bolted connection with a control switch; and a moving mechanism is arranged at the top of the detection box. Through cooperation of a motor, a lead screw, a fixing plate, a fixing rope, a fixing ring, a connecting block and a positioning plate, a user can conveniently drive the fixing rope to move downwards through the motor, and through cooperation of a first guide wheel and a second guide wheel, the user can conveniently reverse the fixing rope; and therefore, the fixing rope can stably drive a moving plate and a brightness sensor to move rightwards through the positioning plate, the position of the brightness sensor can be changed, the brightness data is compared with standard brightness data at the same position, and the user can quickly know whether the semiconductor brightness is qualified or not.

The invention discloses a vehicle collision performance optimization method based on VPI and OLC, comprising the following steps: 1, fitting a VPI curve and an OLC curve to obtain a linear regression formula of the VPI to the OLC when the initial velocity V0 of a vehicle collides with a rigid wall and the average deceleration is A0; 2, not changing the OLC, reducing the average deceleration of the vehicle by optimizing and further optimizing the collision performance of the vehicle body structure, and improving the rebound speed relatively; 3, recalculating the vehicle average deceleration and rebound speed of the vehicle body structure after collision performance optimization, judging whether the vehicle average deceleration and rebound speed meet the relational expression requirements of VPI and OLC or not, and if not, returning to the step 2 for further optimization; if yes, taking that optimization is completed. According to the invention, a linear regression formula of the VPI to the OLC is utilized, and on the premise that the OLC is not changed, the crashworthiness design of the vehicle body structure is guided through the change rule of the VPI.