The present invention relates to a powder dry-pressing molding device and method. The powder dry-pressing molding device includes a rack, the rack is provided with an first pressure mechanism, a workbench mechanism and a second pressure mechanism in sequence along an up-and-down direction, and one side of the workbench mechanism is provided with a scraping mechanism; the first pressure mechanism includes an upper slide block capable of moving up and down, and an upper punch is disposed at a bottom of the upper slide block; the workbench mechanism includes a middle mold seat, a workbench is fixed above the middle mold seat, a middle mold is disposed inside the middle mold seat, and a mandrel runs through the inside of the middle mold; the second pressure mechanism includes a lower slide block capable of moving up and down, a lower punch is fixed at the top end of the lower slide block, and the lower punch is capable of extending into a compacting space between the mandrel and the middle mold; and the scraping mechanism includes a pusher connected with a scraping driving mechanism and capable of moving along the workbench, the pusher is provided with a feeding channel capable of being communicated with the compacting space, and the feeding channel is capable of being communicated with a barrel disposed on the rack. The dry-pressing molding device of the present invention has a high degree of automation, can scrape the powder, and has a good processing effect.

The present invention relates to a powder dry-pressing molding device and method. The powder dry-pressing molding device includes a rack, the rack is provided with an first pressure mechanism, a workbench mechanism and a second pressure mechanism in sequence along an up-and-down direction, and one side of the workbench mechanism is provided with a scraping mechanism; the first pressure mechanism includes an upper slide block capable of moving up and down, and an upper punch is disposed at a bottom of the upper slide block; the workbench mechanism includes a middle mold seat, a workbench is fixed above the middle mold seat, a middle mold is disposed inside the middle mold seat, and a mandrel runs through the inside of the middle mold; the second pressure mechanism includes a lower slide block capable of moving up and down, a lower punch is fixed at the top end of the lower slide block, and the lower punch is capable of extending into a compacting space between the mandrel and the middle mold; and the scraping mechanism includes a pusher connected with a scraping driving mechanism and capable of moving along the workbench, the pusher is provided with a feeding channel capable of being communicated with the compacting space, and the feeding channel is capable of being communicated with a barrel disposed on the rack. The dry-pressing molding device of the present invention has a high degree of automation, can scrape the powder, and has a good processing effect.

A modular assembly is provided for managing the flow of fluid beneath a ground surface. The assembly can feature a plurality of modules, each having a deck portion and opposing sidewalls extending downward therefrom. The opposing sidewalls can slope outward and away from one another as they extend downward from the deck portion. The modules further comprise a shoulder for supporting a link slab, and to support and separate modules that are stacked during transportation or storage. The sidewalls can define an interior fluid passageway having a flared configuration from top to bottom. The link slab and sidewalls of adjacent modules can define an exterior fluid passageway in fluid communication with a lateral fluid channel. A method is also provided for making a precast concrete module for use in the modular assembly.

A modular assembly is provided for managing the flow of fluid beneath a ground surface. The assembly can feature a plurality of modules, each having a deck portion and opposing sidewalls extending downward therefrom. The opposing sidewalls can slope outward and away from one another as they extend downward from the deck portion. The modules further comprise a shoulder for supporting a link slab, and to support and separate modules that are stacked during transportation or storage. The sidewalls can define an interior fluid passageway having a flared configuration from top to bottom. The link slab and sidewalls of adjacent modules can define an exterior fluid passageway in fluid communication with a lateral fluid channel. A method is also provided for making a precast concrete module for use in the modular assembly.

In a head assembly for use on a concrete products forming machine (CPM), a framework is configured to be secured to a vertically displaceable compression beam on the CPM. An array of shoes are sized to be fully received within complimentary mold cavities within a mold box of the CPM. An array of plungers are interposed between the framework and array of shoes, with at least a plurality of the plungers of the array secured at one end to the framework and at another end to a single one of the array of shoes. The plurality of plungers are configured with a C-shaped webbing comprised of upper and lower substantially parallel flange pieces connected via a structural upright forming an outside right-angle edge with each of the upper and lower flange pieces.

In a head assembly for use on a concrete products forming machine (CPM), a framework is configured to be secured to a vertically displaceable compression beam on the CPM. An array of shoes are sized to be fully received within complimentary mold cavities within a mold box of the CPM. An array of plungers are interposed between the framework and array of shoes, with at least a plurality of the plungers of the array secured at one end to the framework and at another end to a single one of the array of shoes. The plurality of plungers are configured with a C-shaped webbing comprised of upper and lower substantially parallel flange pieces connected via a structural upright forming an outside right-angle edge with each of the upper and lower flange pieces.

The disclosure relates to methods of fabricating of ceramic structures, and more particularly to methods of fabricating ceramic structures having profiled surfaces and more particularly to methods of fabrication of ceramic mirror blanks. In one embodiment, a method of forming a shaped ceramic article, includes: forming, via one of a cold-pressing process or pressure casting process, a green ceramic article comprising a first surface, an opposing second surface and at least one high aspect ratio feature shaped into at least one surface; heating the green featured ceramic part to form a debound featured ceramic part; and densifying the debound featured ceramic part via one of a pressureless sintering process or a hot-pressing process.

The disclosure relates to methods of fabricating of ceramic structures, and more particularly to methods of fabricating ceramic structures having profiled surfaces and more particularly to methods of fabrication of ceramic mirror blanks. In one embodiment, a method of forming a shaped ceramic article, includes: forming, via one of a cold-pressing process or pressure casting process, a green ceramic article comprising a first surface, an opposing second surface and at least one high aspect ratio feature shaped into at least one surface; heating the green featured ceramic part to form a debound featured ceramic part; and densifying the debound featured ceramic part via one of a pressureless sintering process or a hot-pressing process.

A method of producing a cylindrical insulator for a spark plug includes a molding step of forming ceramic powder filled in a cavity defined by a mold and a molding pin into a compact. In a first removal step of removing the compact from the mold, the compact has at least one protrusion formed in at least one recess of the molding pin formed in an outer cylindrical surface of the molding pin, and the at least one protrusion is locked in the at least one recess, thereby allowing the compact to be removed with the molding pin from the mold. In a second removal step of removing the molding pin from the compact, the molding pin is turned or rotated in the circumferential direction about the compact, causing the at least one recess to cut the at least one protrusion from the compact, and thereafter the molding pin is removed from the compact.

A method of producing a cylindrical insulator for a spark plug includes a molding step of forming ceramic powder filled in a cavity defined by a mold and a molding pin into a compact. In a first removal step of removing the compact from the mold, the compact has at least one protrusion formed in at least one recess of the molding pin formed in an outer cylindrical surface of the molding pin, and the at least one protrusion is locked in the at least one recess, thereby allowing the compact to be removed with the molding pin from the mold. In a second removal step of removing the molding pin from the compact, the molding pin is turned or rotated in the circumferential direction about the compact, causing the at least one recess to cut the at least one protrusion from the compact, and thereafter the molding pin is removed from the compact.