31results about How to "Reduce the chance of tearing" patented technology

The invention provides a film blowing machine with an improved winding mechanism. Th film blowing machine comprises an extrusion mechanism, a film blowing mechanism, a traction mechanism and the winding mechanism. The film blowing mechanism comprises a die head, an air ring and a rack. The air ring is arranged on the die head. The die head and the air ring are fixedly arranged at the lower end of the rack. The traction mechanism is arranged at the upper end of the rack. The extrusion mechanism is provided with a discharge outlet connected with the die head. The winding mechanism comprises a winding shaft, a belt and a motor, wherein the winding shaft is used for winding thin films. The motor is in transmission connection with the winding shaft through the belt. The thin films blown out from the die head are conveyed to the winding shaft through the traction mechanism. A press shaft capable of pressing the thin films is arranged above the winding shaft. The winding mechanism further comprises a support frame and elastic suspended arms. The press shaft is connected to the support frame through the elastic suspended arms. According to the film blowing machine with the improved winding mechanism, deviation of the thin films in the winding process can be avoided, and dislocation of an upper layer and a lower layer of a thin film is prevented.

The invention provides a front auxiliary frame. The front auxiliary frame comprises a front auxiliary frame body and a front side component. The front auxiliary frame body comprises an upper plate and a lower plate, the upper plate and the lower plate are connected together, and a front mounting support of a lower suspension arm and a rear mounting portion of the lower suspension arm are arranged between the upper plate and the lower plate. The front side component is used for connecting the front auxiliary frame body onto a vehicular body. The front side component and the front mounting support are integrally formed by punching, and the front side wall of the front mounting support is connectedly welded to the upper plate or the lower plate while the bottom wall is connectedly welded to the lower plate to form a front-rear double-layer reinforcement structure and an upper-lower double-layer reinforcement structure. A cushion plate is welded between two side walls of the front side component, and the cushion plate and an upper end cover of the front side component jointly clamp a sleeve. The front auxiliary frame has the advantages of high strength, convenience in welding and high positioning precision.

The invention discloses a rubber composition and a processing method thereof, further discloses application of the rubber composition, and a method for producing the application. The rubber composition comprises the following components in parts by weight: 100 parts of rubber matrix; 1.5 to 8 parts of a cross-linking agent; 40 to 140 parts of a reinforcing filler; 0 to 40 parts of a plasticizer; the rubber matrix comprises the following components in parts by weight: greater than 0 and smaller than or equal to 100 parts of branched polyethylene with the content, greater than or equal to 0 andsmaller than 100 parts of ethyene-propylene rubber, and greater than or equal to 0 and smaller than 100 parts of ethylene propylene terpolymer. The rubber composition is applied for the manufacture ofbrake fluid resistance brake rubber hoses and brake cups. The rubber composition has the benefits that as the rubber composition has the branched polyethylene, the tear strength of size can be improved, so that the probability of tearing of a product during production is reduced, and the overall processing performance is improved.

The invention discloses a method for producring a polyphenylene sulfide film. Sodium sulfide and p-dichlorobenzene are used as raw materials, N-methyl-2-pyrrolidone is used as a solvent, 1,3,5-trichlorobenzene and 2,4,6-trichlorobenzene molecular weight regulators are added to control the molecular weight distribution coefficient of polycondensation synthesized polyphenylene sulfide resin, an antioxidant is added to the synthetic polyphenylene sulfide resin, all above materials are mixed according to a certain ratio to form a raw material for the polyphenylene sulfide film, the material is extruded by a twin-screw extruder, goes through a T-shaped mold, and is biaxially drawn into the polyphenylene sulfide film, and the polyphenylene sulfide film undergoes corona and anti-adhesion agent treatment, and then is wound into a polyphenylene sulfide film roll. The film obtained in the invention can be widely used in the fields of electronic appliances, military industry, aerospace, machinery, chemical industry and the like.

The invention provides a liquid-helium-free superconducting magnet framework, a superconducting magnet and a winding method. The liquid-helium-free superconducting magnet framework comprises a cylindrical main body; annular partition plates are arranged on the cylindrical main body at intervals in the axial direction of the cylindrical main body, and annular wire grooves are formed between the adjacent annular partition plates; the annular wire grooves are symmetrically distributed relative to the central cross section of the cylindrical main body; the annular partition plates comprise an annular end plate and at least one annular partition plate in the direction from the two ends of the cylindrical main body to the center; a wire groove and at least one heating piece groove are formed in the annular partition plate in the axial direction of the cylindrical main body, and a heating piece is arranged in the heating piece groove; and at least one group of cold conduction holes are formed in the annular partition plate in the circumferential direction. According to the liquid-helium-free superconducting magnet framework, the superconducting magnet and the winding method of the invention, the functions of winding a superconducting magnet coil, placing the heating sheet, feeding the wire and conducting cold are realized; and the basis of the wet winding process winding of layer-by-layer winding, interlayer insulation and outer layer binding, the processing difficulty of the liquid-helium-free superconducting magnet framework is greatly reduced, and the processing and material cost is reduced.

The invention discloses a wind sand preventive cable which structurally comprises a wind sand preventive bushing, an outer protective glue layer, a coating sleeve and signal lines. The outer protective glue layer is buckled inside the wind sand preventive bushing via a buckle and coaxial with the wind sand preventive bushing, and the coating sleeve is glued to the inner side of the outer protective glue layer. Wind sand sucked in can be introduced via an air inlet, and rushed out towards a wind direction plate in the end close to the wind direction, grooming leaves are rushed out, wind and sand are guided to the periphery via deflecting branches and leaves and rubber strips, the wind sand is prevented from keeping friction with the wind sand preventive bushing and the outer protective gluelayer, the safety of an oversheath is protected, wind is blown into a primary sand transmitting plate via defection buckles at the two ends, sand is filtered and settled, wind in the two ends fix theouter protective glue layer and the signal lines therein to form a balanced force, the cable is decreased when being shaken, and the possibility that the cable is damaged by being pulled is reduced.

The invention discloses a special-shaped part bending die and a control method, the special-shaped part bending die comprises a first support, the first support is provided with a hydraulic device, a linear driving device and an upper die assembly, and the hydraulic device and the linear driving device are used for driving the upper die assembly to work; the lower die assembly is arranged on the side right opposite to the upper die assembly, and other devices and structures are arranged on the lower die assembly; and the corresponding control method is matched, so that the materials can be conveniently and efficiently bent, and meanwhile, the production specification, particularly the bending distance, can be conveniently adjusted.

The invention discloses a machining process for a drip tray. The machining process comprises the first step of material tailoring, wherein a flaky raw material is tailored into a plurality of strip materials; the second step of blanking, wherein the strip materials in the first step are fixed to working stations of an oil press and are punched into the drip tray in a preset shape; the third step of punching, wherein the drip tray in the second step is punched to form a plurality of through holes in a preset shape; the fourth step of chamfering R corners, wherein R corner chamfering is carried out at the edge position of the drip tray in the third step; the fifth step of polishing, wherein the surface of the drip tray in the fourth step is subjected to polishing treatment; and the sixth step of electroplating, wherein the surface of the drip tray in the fifth step is subjected to electroplating treatment. The process is simple, the machining efficiency is improved, the drip tray is formed through stamping, generation of coarseness of the surface of the drip tray machined through the stamping technology will be reduced, favorable conditions are laid for later machining, and the efficiency of the whole process is further accelerated.

The invention discloses a ratchet wheel for COF carrier tape conveying and a using method thereof.The ratchet wheel for COF carrier tape conveying comprises a cylindrical ratchet wheel body, the left side and the right side of the surface of the ratchet wheel body are provided with a plurality of first positioning teeth and a plurality of second positioning teeth respectively, and the first positioning teeth and the second positioning teeth are arranged in parallel; a plurality of first through holes and a plurality of second through holes are formed in the left side and the right side of the COF carrier tape respectively, and the first through holes and the second through holes are arranged in parallel; when the COF carrier tape is installed on the ratchet wheel body, the first positioning teeth can penetrate through the first through holes, the second positioning teeth can penetrate through the second through holes, the peripheral faces of the first positioning teeth and the peripheral faces of the second positioning teeth are smooth surfaces, and the COF carrier tape can be prevented from being scratched. According to the COF carrier tape, the peripheral surfaces of the first positioning teeth and the second positioning teeth are designed into smooth surfaces without sharp right angles and edges, so that the edges of the first through holes and the second through holes can be prevented from being scratched during conveying, and the tearing rate and the reject ratio of the COF carrier tape in later use are reduced.