45results about How to "Suitable for processing and production" patented technology

The invention relates to a mechanical machining die, in particular to an automatic edge rolling die. The automatic edge rolling die comprises an upper die plate, a male die body, a female die body, a lower die fixing plate and a lower base plate. The male die body is connected with the upper die plate through a male die fixing plate and a male die supporting plate. The female die body is composed of a left L-shaped female die block and a right L-shaped female die block, wherein the left L-shaped female die block and the right L-shaped female die block are symmetrical. The inner sides of the two L-shaped female die blocks are provided with inner circular arcs which can surround the male die body. Each L-shaped female die block is installed on the lower die fixing plate through a lower die fixing pin and a lower die fixing pin fixing plate. Female die fixing bases are further arranged on the two sides of the female die body. Each female die fixing base is fixed to the lower die fixing plate. Female die pressing and supporting assemblies fixed to the lower die fixing plate are installed on the two sides of each female die fixing base. The bottom of the lower die fixing plate is connected with the lower base plate through lower plate supporting blocks. The top of the lower die fixing plate is connected with the upper die plate through guide post guide sleeves. A material returning plate is further installed on the lower die fixing plate. The automatic edge rolling die is simple in structure, low in cost, high in production efficiency and suitable for machining and producing small-sized sheet type cylinder parts.

The invention discloses a processing technology for preparing various pitches and fuel oils by coal tar, which comprises the steps that: the coal tar is heated to 350 DEG C to 360 DEG C, rectified at ordinary pressure first and then at reduced pressure, primarily ultracentrifugated and secondarily ultracentrifugated to respectively produce purified pitch, impregnating pitch, modified pitch, high softening point pitch and fuel oils. The invention has simple technology and convenient operation, can produce various high quality pitches and fuel oils and is characterized by less investment in devices and stable quality, thus better solving the problems of low general grade of pitches of China at present, unstable fraction of coal tar pitches and plenty of impurities and being quite applicableto the processing and producing of the coal tar.

The invention relates to a foam forming machine, in particular to a CNC (Computer Numerical Control) four-axis full-automatic foam die-free forming machine which comprises a digital control computer, an electric heating wire transformer (54), an electric heating wire (64), a machine body (5), an operating platform (42), a stand column (6), a beam (8) and a Z-direction sliding device (73), whereinan X-direction sliding device (71) is arranged on the beam (8). The CNC four-axis full-automatic foam die-free forming machine also comprises a fixing device (67) for a workpiece to be processed on the operating platform (42). The workpiece to be processed moves linearly forth and back along the Y-axis direction, the electric heating wire (64) moves linearly left and right along the X-axis direction and moves linearly up and down along the Z-axis direction, and the electric heating wire (64) rotates. The invention has the advantages of simple structure, realization of processing various complicated shapes of foams, good processing quality, low cost and wide application range.