40results about How to "Short forming cycle" patented technology

The invention belongs to the field of composite material forming, and particularly relates to a thermoplasticity composite material and surface resin plastic part integrated forming method. The methodcomprises the following steps that a, a thermoplasticity composite material insert is selected; and b, after being preheated, the insert is arranged in a die to be subjected to hot pressing and injection molding integrated forming,wherein after the die is closed for the first time and a closed cavityin the assigned size is formed, resin melt is injected into the cavity through an injection molding machine, then, the die is compressed to be completely closed, the resin melt transmits pressure to the insert to form the insert, meanwhile, under the action of the melt temperature, the resin meltmelts on the surface of the insert, and the insert and the resin plastic part form surface bonding. The thermoplasticity composite material and surface resin plastic part integrated forming method combines the advantages of hot pressing forming and injection molding compression forming, and is suitable for producing high-strength, high-size-precision and complex-structure composite material products; and due to the die pressing and injection molding compression integration character, the production efficiency can be improved, and the production period is shortened.

Container means comprises neck means (1) provided with thread means (3)on which cap means (5; 22; 25; 35) can be screwed as well as contrast means (6; 6a) for interacting with opening indicating means (11; 23; 26; 30; 39) of said cap means (5; 22; 25; 35), said contrast, means (6; 6a) being provided along helix means of said thread means (3); cap means comprises thread means (38; 138) suitable for interacting with further thread means (3)of neck means (1) of a container, and opening indicating means (39; 401) provided with stop means (600), said stop means (600) being provided along helix means of said thread means (38; 138).

The invention relates to shell flanged hole part forming methods, in particular to a magnetic pulse flanged hole forming method for shells. The method aims at solving the problems that in the flanged hole manufacturing process of an existing steel die hole flanging method, the technology is complex, the production efficiency is low, and the production cycle is long. The method comprises the steps that firstly, the shape of a flanged hole coil bobbin is designed according to a curved surface shell with pre-manufactured holes; secondly, the curved surface shell with the pre-manufactured holes is arranged on a flanged hole forming female die, an edge pressing ring is arranged on the inner surface of the curved surface shell in the periphery direction, a hole flanging coil matched with the hole flanging deforming area is wound on the flanged hole coil bobbin, covers the hole flanging deforming area and is attached to the hole flanging deforming area, one end of a capacitor set is connected with one terminal of the hole flanging coil, the other end of the capacitor set is connected with one end of a gap switch, the other end of the gap switch is connected with the other terminal of the hole flanging coil, and the capacitor set is charged to reach the preset voltage value; thirdly, magnetic pulse flanged hole forming is carried out; fourthly, flanged holes are corrected. The method is used for forming flanged hole parts of shells.

The invention relates to a double-material product injection mold, in particular to a wide-angle double-material product gate type secondary injection mold. The wide-angle double-material product gate type secondary injection mold comprises a panel, a hot runner plate, a front mold main insert, a front template, a rear mold main insert and a rear template and is characterized by further comprising a first knife switch, a second knife switch, a first knife switch fixing plate, a second connecting rod, a second knife switch fixing plate, a limit screw and an oil cylinder for driving the second knife switch fixing plate to vertically move; a first chute is formed in the first knife switch, and the second knife switch can be arranged in the first chute in a sliding way; the bottom of the second connecting rod is fixedly connected with the second knife switch fixing plate, and the top of the second connecting rod is in contact with the second knife switch and sides relative to the second knife switch. The double-material product injection mold has the advantages that the difference between adjacent sealant surface angles of an injection molding product is large; the secondary injection molding can be finished without mold opening, the forming period is short, and the single injection molding cost is low; no material overflow occurs at the material lap joint part, the wall thickness of the product is uniform and undistorted, and the surface quality is high.

The invention discloses high-performance medium-manganese TRIP steel and a low-temperature processing forming method thereof, and belongs to the technical field of ultrahigh-strength steel. The methodcomprises the following steps of heating the cut medium manganese steel ingot to 600-800 DEG C and carrying out heat preservation for 0.5-1.5 hours, carrying out two-phase zone rolling, carrying outair cooling; then heating to 600-800 DEG C, and preserving heat for 5-10 minutes; transferring the medium-manganese TRIP steel plate subjected to austenitizing treatment to a stamping die, wherein thetemperature is reduced to by 50-100 DEG C, carrying out stamping forming, and carrying out pressure maintaining for 10-30 seconds, cooling to 180-250 DEG C along with the die; and heating to 250-450DEG C, preserving heat for 10-30 minutes, and carrying out air cooling, and obtaining a high-performance medium-manganese TRIP steel forming part. According to the method, the two-phase region is rolled, so that the C / Mn is prepared in advance and then is processed by a subsequent Q and P process, so that the C / Mn is prepared. According to the forming method, the rolling efficiency and the surfacequality of the stamped part are improved, the strength of the manufactured stamped part is high, the comprehensive performance is excellent, and the requirements of the target of the automobile industry are met.

This invention relates to a kind of acrylic resin compound used for filling hollow mold and its preparation method. This compound includes 45 to 90 shares acrylic resin according to weight, melt index is 1.5 to 5.0g / 10min; 5 to 90 weight shares inorganic filler hand led by coating , particle size is 1.0 to 10.0 mu M; 0.2 to 0.5 weight shares antioxidant. This compound is adaptable to hollow blow molding craft, possess higher rigidity, lower cost as well as shorter forming cycle comparing with traditional polypropylene hollow product; this resinoid compound also possess Heat distortion temperature, tenacity as well as favorable dimensional stability and thermal degradation, at the same time possess lower thermal coefficient of expansion, contraction ratio.

The invention discloses a method for controlling the electrothermal stretch bending process of titanium alloy profiles and a stretch bending forming device. The control includes: clamping the titanium alloy profiles and fixing the copper plate on the suspended section of the titanium alloy profiles; heating the titanium alloy profiles; heating the titanium alloy profiles; When the alloy profile reaches the first set temperature, pre-stretch and bend the titanium alloy profile; when the bending of the titanium alloy profile ends, increase the heating current, wherein the temperature of the suspended section of the titanium alloy profile is lower than that of the titanium alloy profile The temperature of the bending section; when the bending section of the titanium alloy profile is heated to the second set temperature, the titanium alloy profile is stretched and deformed. The purpose of the control method for the electric heating stretch bending process of titanium alloy profiles is to solve the problems of low efficiency and high cost of the traditional titanium alloy profile heating stretch bending process.

The invention discloses a method for eliminating grooves formed in the surface of a superplastic forming / diffusion bonding four-layer structure. The method comprises the steps that (1), the plate thickness of the superplastic forming / diffusion bonding four-layer structure is selected; (2), air inlets for forming the superplastic forming / diffusion bonding four-layer structure are machined in selected plates; (3), the plates with the machined air inlets are welded into a whole, and air inlet pipes are welded to the air inlets; (4), the whole plate with the air inlet pipes is heated, and air is introduced into the air inlet pipes to apply back pressure after the temperature of the whole plate reaches the certain temperature till diffusion bonding of the plate is completed; and (5), air is introduced into the air inlet pipes for pressurizing, and superplastic forming of the plate is completed. According to the method, the superplastic forming / diffusion bonding four-layer structure is formed through the method of applying the back pressure, the condition that the grooves are generated in the four-layer structure in the superplastic forming / diffusion bonding process can be effectively avoided, and the superplastic forming / diffusion bonding four-layer structure prepared through the method of applying the back pressure has the significant advantages on the aspects such as the part sizeprecision, the profile precision, the surface quality, the machining efficiency and the manufacture cost.

A polylactic acid-containing thermoplastic resin composition which enables the production of a molded article that can be molded in a practically satisfactory molding cycle and has excellent mechanical properties including impact resistance, excellent heat resistance, excellent weld appearance and the like. The polylactic acid-containing thermoplastic resin composition comprises: 100 parts by weight of a polylactic acid-containing thermoplastic resin component which comprises 50 to 95 parts by weight of a polylactic acid resin (A) and 5 to 50 parts by weight of a rubber-reinforced resin (B); 0.1 to 3 parts by weight of a nucleating agent (C); 1 to 15 parts by weight of a filler (D); and 0.03 to 3 parts by weight of a dispersant (E). The rubber-reinforced resin (B) comprises 30 to 100% by weight of a rubber-containing graft copolymer (b-1) and 0 to 70% by weight of a hard (co)polymer (b-2).