37results about How to "Improve mold precision" patented technology

A fuel cutoff valve is provided with a casing that forms a valve chamber that is connected to a connection conduit, a float mechanism that is housed so as to be able to rise and fall in the valve chamber, and a spring that supports the float mechanism. The float mechanism is structured through an assembly of a first float body and a second float body, where the first float body is provided with a valve portion that opens and closes the connection conduit and provided with a storage chamber that is open on the bottom, where the second float body is housed in the storage chamber to be assembled into the first float body.

The invention relates to a fluid bearing device, which can realize cost reduction and prevent itself from being charged by static electricity. A bearing sleeve is provided inside the housing, and the shaft member is inserted into the bearing sleeve. A pressure is generated in a bearing gap between the inner surface of the bearing housing and the outer peripheral surface of the shaft member by the dynamic pressure of the lubricating oil to radially support the shaft member in a non-contact state with the bearing housing. The shaft end of the shaft member is in contact with the bottom of the case, which is formed of a conductive resin compound mixed with carbon nanofibers, and whose volume resistivity is set to be 106 Ω·cm or less to conduct electricity.

A press, comprising: an electric motor (19) that rotates a crankshaft (13) to raise and lower a slider (11); input items include the height, position, and vibration of the slider (11) at the start and end of vibration processing; The motion data of the speed of the slider (11) during processing, the rotation angle of the crankshaft (13) in one direction during the pushing operation, and the rotation angle of the crankshaft (13) in the other direction during the return operation are input and operated by the operator. The motion data input unit (29) of input; Generate the motion pattern generating unit (63) of the motion pattern of slider (11) based on the motion data input to the motion data input unit (29); (63) the motor control unit (73) to control the electric motor (19) from the generated motion pattern.

The invention discloses a fiberglass enhanced polyphenyl thioether / polyphenylether composite material and a preparation method thereof. The composite material is mainly prepared by the following raw materials: polyphenyl thioether, polyphenylether, fiberglass, mineral filler, a compatibility agent, an antioxidant and a processing aid. The preparation method of the fiberglass enhanced polyphenyl thioether / polyphenylether composite material comprises the following steps of: (a) firstly, respectively blasting and drying polyphenyl thioether resin and polyphenylether resin; (b) weighting the polyphenyl thioether resin and the polyphenylether resin which are dried, the mineral filler, the compatibility agent, the antioxidant and the processing aid; (c) mixing the dry materials in the step (b) to obtain a compound; and (d) adding the compound in the step (c) and the fiberglass to a double screw extruder for melt blending and pelleting. The fiberglass enhanced polyphenyl thioether / polyphenylether composite material can unconspicuously lower the temperature-resistant level and the rigidity of the polyphenyl thioether resin, further improve the molding accuracy of the polyphenyl thioether resin and decrease the cost.

The invention belongs to the technical field of bending machine moulds, and in particular relates to a quick mold changing device for an upper mold of a bending machine to solve the problem that screws need to be repeatedly disassembled for the installation of a mechanically fixed and clamped upper mold. The fast mold changing device for the upper mold of the bending machine includes an upper mold and a mold changing base. The bottom of the mold changing base is provided with a tapered installation groove for the upper mold. The two sides of the middle part of the tapered installation groove are symmetrically provided with notches, and the notches run through the mold changing base longitudinally, and symmetrical positioning mounting holes are arranged on the mold changing bases on both sides of the notch, and the positioning mounting holes are connected with the notches, and the upper part of the positioning mounting holes There is a blind hole for switch installation on one side, and the blind hole for switch installation is connected with the tapered installation groove of the upper die. The positioning assembly of the upper die is installed in the positioning installation hole to fix the upper die. The die change switch assembly is installed in the blind hole for switch installation. Used to remove the upper mold. The invention effectively solves the problem that the fixing screws need to be repeatedly disassembled for the installation of the mechanically fixed and clamped upper mold.

A method for producing a folding seat cushion, comprising the following steps: preparing a composite sheet; placing the composite sheet in an oven for baking and softening, and placing the softened composite sheet in a mold for compression molding, wherein the mold is a cold-pressed mold, and the Before being put into the composite tablet for pressing, the temperature of the lower molding surface and the upper molding surface of the mold is reduced to less than 50°C; the lower molding surface of the mold is distributed with concave and convex surfaces, and the upper molding surface of the mold is also distributed with concave surfaces. The invention has the advantages that: the production energy consumption is reduced, the production cost is saved; the molding precision is high; Formed to meet the modeling requirements of the seat cushion, the concave-convex surface is complete, the transition is smooth, and the production effect is good.