85results about How to "Improve binding tightness" patented technology

The invention designs an automatic article depositing-withdrawing machine and a use method of the automatic article depositing-withdrawing machine, to solve the technical problem that a delivery man must contact with a recipient face to face when delivering. The machine provided by the invention comprises a box body and a main computer arranged in the box body, wherein the outer surface of the box body is provided with an input device connected with the main computer through signal transmission; the box body is provided with a plurality of storage cabinets with doors; each storage cabinet is provided with an automatic door opening device electrically controlled by the main computer; and the main computer is provided with a network module. The machine provided by the invention is rational in layout, and reaches the purpose of automatically depositing and withdrawing the articles, avoids the face-to-face contact between the delivery man and the recipient, saves the time of the delivery man and improves the working efficiency; the machine provided by the invention helps the recipient to automatically schedule to take away the articles; the machine provided by the invention runs stably, mistakes are not easily made, the machine provided by the invention detects the storage cabinets and door locks of the storage cabinets in real time so as to avoid missing the articles and prevent the doors from being unlocked in time.

The invention related to a welding method of target materials and back plates, which comprises the following steps: providing a copper target material and a back plate; forming a metal intermediate layer on a welding surface of the copper target material; adding a brazing filler metal on the welding surface of the back plate; welding the copper target material to the back plate to form a target material assembly by soldering, heating and melting the brazing filler metal; then carrying out heat preservation and thermal diffusion processing; and cooling the target material assembly, and removingthe redundant brazing filler metal through machining. The invention improves the problem of difficult soakage of weld workpieces and brazing filler metals through the metal intermediate layer, and effectively improves the bonding strength between the copper target material and the back plate; the copper target material can not be disconnected in a sputtering process, and sputter coating can be normally carried out.

The invention discloses H-shaped steel with a rib and a concrete structure of the H-shaped steel with the rib. The H-shaped steel with the rib comprises a web, a top flange and a bottom flange, wherein the web is located between the top and bottom flanges and is respectively connected with the top and bottom flanges. The H-shaped steel with the rib further comprises an upper rib formed in an upper included angle formed by connecting the web and the top flange and a lower rib formed in a lower included angle formed by connecting the web and the lower flange. The upper and lower ribs are integrally formed with the web, the top and bottom flanges through hot rolling. The concrete structure of the H-shaped steel with the rib comprises a reinforcing steel bar, concrete and the H-shaped steel with the rib. The reinforcing steel bar is arranged around the H-shaped steel with the rib, the concrete is poured between the H-shaped steel with the rib and the reinforcing steel bar, and the H-shaped steel with the rib is the above H-shaped steel with the rib. Through the technical scheme disclosed by the invention, the bonding compactness of the H-shaped steel with the rib and the concrete can be improved.

The invention discloses an electronic substrate. The electronic substrate comprises a polytetrafluoroethylene base layer and a plurality of conductive strips arranged on the polytetrafluoroethylene base layer, each conductive strip is provided with a first surface and a second surface which are opposite up and down, wherein at least one groove is concavely formed from the second surface to the first surface; the grooves do not penetrate through the conductive strips in the vertical direction; the grooves extend along the front-back direction, the polytetrafluoroethylene base layer partially fills the grooves, the groove walls of the grooves are provided with at least one stopping surface, the stopping surface prevents the part, filling the grooves, of the polytetrafluoroethylene base layerfrom being separated from the conductive strips in the direction opposite to the concave direction of the grooves, and a conductive path of the conductive strip is defined to transmit signals in thefront-back direction. Compared with the prior art, the polytetrafluoroethylene material and the conductive material in the electronic substrate are tightly combined, loss can be reduced when signals are transmitted on the conductive strip, and transmission is stable.