31results about How to "Solve indentation" patented technology

The invention relates to a device for attaching a nameplate to a keyboard shell. An attaching mechanism is embedded between conveying belts and comprises a fixed pressing roller and a conveying roller abutting against the fixed pressing roller. The contact surface between the fixed pressing roller and the conveying roller is located on the same plane with the upper surfaces of the conveying belts. The interior of the conveying roller communicates with negative pressure, and through holes are formed in the circumferential wall of the conveying roller. The conveying roller is fixedly mounted on a rotary shaft. The rotary shaft is sleeved with a bearing. A shielding case and a plug block are mounted on the bearing. An opening of the shielding case faces downwards and abuts against the inner wall of the conveying roller, and the abutting portion of the shielding case is of a flexible structure. The plug block is located in the shielding case, and a compression spring is connected between the plug block and the rotary shaft. A conveying mechanism further comprises a conveying trough and a guide plate, and the conveying trough and the guide plate are located above the conveying roller. A heating mechanism comprises a hot air cylinder, wherein a nozzle is arranged on the hot air cylinder, and the nozzle faces the space between the fixed pressing roller and the conveying roller. By implementing the scheme, the effect of attaching the nameplate without bonding is achieved.

The invention discloses a method for reducing the surface folding and bonding damage of an aluminum coil caused by head coiling diameter thickness deviation. When a hot-rolled aluminum coil with a finished product thickness of more than or equal to 6.0mm is rolled, the head of an aluminum strip is pressed and thinned to be less than 6mm, and time for enlarging a roll gap to a roll gap with a set thickness is calculated according to the length of the aluminum strip machined by each rolling mill. The method has the beneficial effects that the head position of the aluminum strip is pressed and thinned in an aluminum strip rolling process, and a thickening deformation area of the aluminum strip is machined into an abrupt thickness change-free wedge-shaped area, so that abrupt thickness changes are avoided, the problem of dents or folding caused by the excessive thickness of the head of the aluminum coil can be effectively solved, and the finished product rate is greatly increased; moreover, additional hardware equipment is not required, and only a conventional program is required to be modified, so that the method is low in cost and high in practicability.

The invention discloses a guide roller for anti-tightening of wide copper foil and an electrolytic copper foil slitting machine; it belongs to the technical field of electrolytic copper foil for power batteries of new energy vehicles; its technical points include: a first A side thread segment and a second side thread segment, the first side thread segment and the second side thread segment are arranged symmetrically; the first side thread segment and the second side thread segment have opposite directions of rotation. The wide-width copper foil anti-tightening guide roller and the electrolytic copper foil slitting machine of the present application can solve the problem of wrinkling of the large-width copper foil during the copper foil slitting process.

The invention relates to an ultralow tension cropping device, comprising a low tension cloth feeding mechanism, a conveying mechanism and a cloth swinging mechanism; the low tension cloth feeding mechanism comprises a drive motor, a first drive roll, a second drive roll, a tension sensor and a bending roll; the drive motor drives the first drive roll to enable cloth to pass by the first drive roll, the second drive roll, the tension sensor and the bending roll in sequence to enter the conveying mechanism; the conveying mechanism comprises a conveyor belt, a driving roll and a driven roll; the driving roll and the driven roll are erected on a mounting beam; the driving roll is driven by a conveyor belt motor through gear meshing, the inside of the conveyor belt is supported by a support roll, and the outside of the conveyor belt is tensioned by a tensioning roll; the cloth swinging mechanism comprises a swing arm and a cloth guide roll, the swing arm is hoisted at two ends of the driving roll and a mandrel, the cloth guide roll is erected on the swing arm, and the mandrel is driven by a cloth swinging motor. The ultralow tension cropping device has the advantages of no cropping indentations, no wrinkles and energy saving.

The invention belongs to the field of metal coatings, and in particular relates to a dipping coating for metal surfaces and a preparation method and application method thereof. Based on the total weight of the dip-coating paint as 100%, the dip-coating paint includes the following components in weight percentage: thermoplastic acrylic resin 40-60%; cellulose acetate butyrate 10-20%; epoxy resin 5% ‑15%; adhesion promoter 1‑2%; leveling agent 0.1‑0.5%; ethyl acetate 8‑20%; butyl glycol ether 0‑5%. The coating has good effect of dipping, smooth surface, high gloss, no indentation in construction, no need to bake, and the dried paint film has excellent resistance to salt spray and citric acid.

The invention relates to a two-component organosilicon encapsulant and its preparation method and application. The two-component silicone encapsulant includes a component A and a component B; in parts by mass, the component A includes the following components: 100 parts of hydroxyl-terminated polydimethylsiloxane, and methyl MQ 10 to 30 parts of silicone resin; in parts by mass, the component B includes the following components: 100 parts of alkoxysilane-modified polydimethylsiloxane, 1,2-bisalkoxysilyl ethyl 20 to 40 parts of alkane, 3 to 8 parts of a silane coupling agent, and 0.2 to 0.6 parts of an organic tin catalyst. The two-component silicone encapsulant can maintain high transparency under the condition that the viscosity difference between the A component and the B component is small, and the deep curing is fast.

The invention discloses an adapter device for a special-shaped connector of a special aerospace valve. The adapter device for the special-shaped connector of the special aerospace valve comprises a pipe joint nozzle, a screw sleeve, an outer sleeve, a seal ring, a taper sleeve and a seal rod, wherein the pipe joint nozzle is a hollow rotary body; a limiting step is arranged on the outer wall of the right end; external screw threads are arranged at two ends of the outer wall of the pipe joint nozzle; the screw sleeve is screwed onto the outer wall of the right end of the pipe joint nozzle; theright end of the screw sleeve and the right end of the pipe joint nozzle are on the same plane; an embedded cavity is formed between the pipe joint nozzle and the screw sleeve; the small end head of the special-shaped connector is embedded into the embedded cavity; the inner wall of the special-shaped connector at the embedded part fits to the outer wall of the pipe joint nozzle; the limiting stepis in butt joint with a smooth step, and the butt-joint part is sealed by the seal ring; the taper sleeve is of a tapered rotary body structure and is arranged on the right side of the smooth step ofthe small end head of the special-shaped connector; the outer sleeve is screwed onto the outer wall of the screw sleeve; and the taper sleeve is extruded into the embedded cavity. The fixed connection and the cavity communication between the pipe joint nozzle and the special-shaped connector are realized, so that the connection problem of the test of the special aerospace valve with the special-shaped connector is solved.

The invention relates to an attachment method for a keyboard shell and a nameplate. An attachment mechanism is embedded in the middle of a conveying belt and comprises a fixed press roller and a conveying roller abutting against the fixed press roller. The contact face of the fixed press roller and the conveying roller and the upper surface of the conveying belt are located on the same plane. Negative pressure communicates in the conveying roller. Through holes are formed in the circumferential wall of the conveying roller. The conveying roller is fixedly mounted on a rotating shaft. The rotating shaft is sleeved with a bearing. A shielding cover and a plug block are mounted on the bearing. An opening of the shielding cover is downward and abuts against the inner wall of the conveying roller. The abutting part of the shielding cover is of a flexible structure. The plug block is located in the shielding cover. A press spring is connected between the plug block and the rotating shaft. A material transport mechanism comprises a conveying groove obliquely formed above the conveying roller and a guide plate. A heating mechanism comprises a hot air barrel. A nozzle is arranged on the hot air barrel and faces the position between the fixed press roller and the conveying roller. Through implementation of the above scheme, the effect of nameplate attachment is achieved without a pasting manner.

The invention discloses an anti-indentation amino baking varnish which can be used for the finish coating of automobile hubs and a preparation method thereof. The anti-indentation amino baking varnish of the invention mainly includes the following components in weight percentage: polyester modified thermosetting acrylic resin 42 ‑55 parts by weight; 2‑3 parts by weight of blocked isocyanate resin; 18‑22 parts by weight of amino resin; 6‑8 parts by weight of auxiliary agent; 10.0‑20.0 parts by weight of solvent. The invention is mainly applied to the finish coating of automobile wheels, and uses polyester modified thermosetting acrylic resin and amino resin as the main body of the reaction to generate amino baking varnish with a pencil hardness of up to 2H, which can effectively solve the problems caused by the off-line coating of automobile wheels. The problem of indentation on the surface of the wheel hub caused by accumulation and extrusion can improve the product qualification rate of automobile wheel hub manufacturers. The preparation process of the invention is simple and suitable for industrialized production.