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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 3. Отображено 3.
28-09-2011 дата публикации

Master mold withdrawing mechanism with slide insert

Номер: CN0102198713A
Автор: ZHAO ZHIKUI, ZHOU GONGDA, ZHIKUI ZHAO, GONGDA ZHOU
Принадлежит:

A master mold withdrawing mechanism with a slide insert. The master mold withdrawing mechanism is utilized in a mould. The mould comprises an upper fixing plate, a material stripping plate, a master mold plate and a master mold cavity, wherein the upper fixing plate, the material stripping plate, the master mold plate and the master mold cavity have a sequential connection. The master mold withdrawing mechanism comprises a shovel base, wherein one end of the shovel base is arranged in the upper fixing plate and the other end of the shovel base is arranged in the master mold cavity, a master mold slide insert, wherein the master mold slide insert is arranged in the master mold plate and two pressing blocks are arranged respectively on two sides of the master mold slide insert, an inclined guide pillar, wherein one end of the inclined guide pillar is arranged in the shovel base and the other end is arranged in the master mold slide insert, and a spring which is arranged in a stopping block ...

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Номер записи: 1
20-06-2023 дата публикации

Thin piece core-pulling mechanism

Номер: CN116265225A
Автор: ZHOU GONGDA
Принадлежит:

The invention relates to the technical field of injection molds, in particular to a thin part core-pulling mechanism which comprises insert cores, the number and the position of the insert cores adapt to product holes, one end of each insert core is used for forming the product holes, the other end of each insert core is fixed between an insert core seat and a cushion block, and guide columns are arranged at the two ends of the cushion block; the sliding blocks are arranged on the two sides, provided with the guide column surfaces, of the cushion block, sliding grooves are formed in the positions, corresponding to the guide columns, of the sliding blocks, and the cushion block and the insert base slide in the sliding grooves of the sliding blocks through the guide columns and drive the insert to move in the core pulling direction. The insert core pulling mechanism has the beneficial effects that the insert core is inserted into the hole of the product, when the sliding block retreats, the ...

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Номер записи: 2
24-09-2014 дата публикации

Copper-foil surface-changing method used for manufacture procedure of printed circuit board

Номер: CN104066274A
Автор: ZHOU GONGDA
Принадлежит:

Disclosed is a copper-foil surface-changing method used for a manufacture procedure of a printed circuit board. The steps are as follows: firstly preparing a copper-foil substrate in advance and carrying out surface cleaning and rubbing and applying horizontal spray or vertical immersing of a surface-changing agent after the rubbing is completed; and finally, drying the copper-foil substrate so as to be used for a follow-up procedure. Because in the process, a microetching technology does not need to be used, a problem of machine erosion by a superoxide or heavy metal pollution does not happen and the surface-changing agent does not change the roughness of a copper surface; and at the same time, for a ultra-thin copper manufacture procedure, a binding force can be improved effectively and because after the surface changing, the surface of a copper sheet is enabled to become smooth and a problem of dry film residue and damage of a fine line can be overcome completely. Therefore, the copper-foil ...

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Номер записи: 3