36results about How to "Avoid secondary deformation" patented technology

The invention discloses a method for producing a heat insulating and preserving ceramic composite plate with decorative properties, comprising the following steps: preparing the powder of a decorative layer; preparing the powder of a heat insulating and preserving layer; loading the powder in a ceramic sagger in the secondary distribution way; sintering in a roller kiln in one time without drying and moulding by a ceramic pressing machine; demoulding, polishing and finishing the decorative surface, and determining the thickness and shape of the heat insulating and preserving surface by mechanical dry cutting. By the joint reaction of the ultrafine foaming agent, the dolomite, the diatomaceous earth and the polishing slag at high temperature, the heat insulating and preserving plate filled with tiny closed pores can be formed. The product has high strength, strong penetration resistance and lower thermal conductivity than the existing ceramic heat preserving material and has the characteristics of low production energy consumption, good decorative effect and prominent heat preservation, heat insulation and sound insulation effects.

The invention provides a forging method of aluminum or aluminum alloy, which comprises the following steps that blanks of the aluminum or the aluminum alloy is provided; a forging mould which comprises an upper mould and a lower mould is provided, and each of the upper mould and the lower mould is provided with an independent heating device and temperature control equipment; the blank of the aluminum or the aluminum alloy are placed in the forging mould for forging; and the temperature difference between the upper mould and the lower mould is 100-350 DEG C in the forging process. An aluminum or aluminum alloy forged piece manufactured by the method is good in structure property and high in precision and yield, so that the method is suitable for industrialized production.

The invention belongs to the field of loudspeakers, and particularly relates to a tool and technology for shaping a loudspeaker voice coil. The tool for shaping the loudspeaker voice coil comprises a tool substrate and is characterized in that containing holes holding the loudspeaker voice coil are evenly formed in the tool substrate; the portion, at one side of each containing hole, of the tool substrate is provided with a lead groove used for holding one lead of the voice coil; the tool for shaping the loudspeaker voice coil further comprises ejection blocks matched with the containing holes; each ejection block comprises an ejection body and a holding portion; each ejection body and the corresponding holding portion are integrally arranged; the outer diameter of each ejection body is larger than the outer diameter of the voice coil and smaller than the inner diameter of each containing hole; the shaping technology of heating is conducted on the loudspeaker voice coil. According to the tool and technology for shaping the loudspeaker voice coil, the uniformity of the size of the voice coil can be effectively guaranteed and the stability of the quality of a loudspeaker is guaranteed.

The invention relates to an automobile body concave-convex recovery device for an automobile metal plate. The device comprises a connecting pipe and a sucking disc, the sucking disc is mounted at one end of the connecting pipe, an executing mechanism is arranged in the connecting pipe, at least two auxiliary mechanisms are arranged on the connecting pipe, the auxiliary mechanisms are uniformly distributed at the outer portion of the connecting pipe in the circumferential direction with the axis of the connecting pipe as the center, the executing mechanism comprises a moving disc, a hydraulic cylinder and a sealing assembly, the sealing assembly comprises a driving motor, a driving disc, two air holes and two sealing units, and each sealing unit comprises a sealing disc and a connecting unit. According to the automobile body concave-convex recovery device for the automobile metal plate, the recovering function of the automobile metal plate is achieved through the executing mechanism, the function of removing impurities on the automobile metal plate is achieved through the auxiliary mechanisms, and secondary deformation caused by the impurities during automobile concave-convex recovery due to the impurities is prevented.

The invention discloses a round bamboo drying and forming device which is used for drying round bamboos. The round bamboo drying and forming device comprises a drying tank, a carrying rack and a bending die. The drying tank is used for drying round bamboos arranged in the drying tank. The carrying rack is arranged in a drying cavity and is used for carrying the round bamboos. The bending die is arranged on the carrying rack and is used for making the round bamboos keep a preset bent shape. By means of the drying device, the bending die is used for shaping the round bamboos before drying, thenthe shaped round bamboos are dried, after drying is completed, the round bamboos can keep the fixed bent shape, and therefore secondary deformation of the round bamboos is effectively prevented.

The invention relates to a graded metal fragment recovery device for a ballistic test, and belongs to the technical field of ballistic tests. The recycling device comprises a bottom plate, a movable side plate and recycling structure units, the n recycling structure units are arranged in the length direction of the bottom plate with the length direction of the bottom plate as the front-back direction and the width direction of the bottom plate as the left-right direction, and the lower ends of fixed steel plates of the recycling structure units are fixedly connected with the bottom plate. The two movable side plates are symmetrically installed on the left side and the right side of the bottom plate, and the upper ends of the movable side plates are connected with the fixed steel plate through hinges. The layered recovery structure unit composed of the aramid fiber layer, the liquid layer and the PE layer is adopted to effectively intercept the metal fragments, secondary deformation of the metal fragments in the recovery process is avoided, the number of the recovery structure units is adjusted and controlled, recovery of the metal fragments under different speed conditions can be achieved, and the recovery efficiency is improved. And the recovery device is easy to search and recover the metal fragments.

The invention discloses a magnetic adsorption type positioning and rotating mechanism and a using method thereof. The magnetic adsorption type positioning and rotating mechanism comprises a positioning mechanism and a rotating mechanism which are fixedly connected to form a synchronous rotating whole body. Rapid clamping and positioning of an annular thin disc with a conical surface can be achieved, a magnetic adsorption mode is adopted for axial positioning, and the adsorption force is adjusted by changing the axial position of a strong magnetic column in a guide hole, so that secondary deformation in the detection positioning process is avoided, and meanwhile, accurate detection of form and location tolerance parameters can be guaranteed; the rotating precision of the rotating mechanismreaches 0.003 mm, the precision error is within + / -0.001 mm at different rotating speeds, and the system error of a transmission system is reduced to the maximum extent; the integrated design of a rotary shaft system and a workpiece positioning table is realized, and the matching error between the transmission mechanism and the positioning mechanism is avoided; and the magnetic adsorption type positioning and rotating mechanism also has the remarkable advantages of small friction torque, large load, high reliability and the like, can effectively avoid system errors caused by low rotation precision of the rotary shaft system, and meets the point sampling requirement of rapid detection of the annular thin disc with the conical surface.

The invention discloses a die cutting method of a sticking port of a packaging paper box with a hidden and easily-torn port. In the invention, die cutting is carried out on the sticking port of the packaging paper box by use of the die cutting method, when a die cutting cutter board and a die cutting bottom board are laminated, a semitransparent cutter presses a bottom die exactly so as to cut through the surface of paper; the bottom die plays a role in support, so that the pressure generated by a die cutting machine during lamination can be accurately applied onto the semitransparent cutter,thus the die cutting depth is stable, the paper die cutting effect in a semitransparent area is ensured, and the paper can be prevented from secondary deformation; and the produced packaging paper box can be prevented from dislocation of located lines and paper layering phenomena when box pasting is carried out by virtue of an automatic box pasting machine,so that the product quality is effectively controlled.

The invention discloses a method for producing a heat insulating and preserving ceramic composite plate with decorative properties, comprising the following steps: preparing the powder of a decorative layer; preparing the powder of a heat insulating and preserving layer; loading the powder in a ceramic sagger in the secondary distribution way; sintering in a roller kiln in one time without drying and moulding by a ceramic pressing machine; demoulding, polishing and finishing the decorative surface, and determining the thickness and shape of the heat insulating and preserving surface by mechanical dry cutting. By the joint reaction of the ultrafine foaming agent, the dolomite, the diatomaceous earth and the polishing slag at high temperature, the heat insulating and preserving plate filled with tiny closed pores can be formed. The product has high strength, strong penetration resistance and lower thermal conductivity than the existing ceramic heat preserving material and has the characteristics of low production energy consumption, good decorative effect and prominent heat preservation, heat insulation and sound insulation effects.

The aluminum-plated film composite paper flattening treatment equipment specifically comprises an outer frame, one end of the inner wall of the outer frame is rotationally connected with a discharging roller, and the end, away from the discharging roller, of the inner wall of the outer frame is rotationally connected with a receiving roller and a supporting device; the supporting device is arranged in the outer frame and located between the discharging roller and the collecting roller. The flattening device is arranged at the top of the inner wall of the outer frame, and the bottom of the flattening device right faces the supporting device; the supporting device comprises a supporting table, and rotating rollers are fixedly connected to the two ends of the supporting table. According to the flattening treatment equipment and method for the aluminum-plated film composite paper, tension changes on the composite paper can be conveniently adapted, so that the flattening operation is more thorough, the flattening effect is better, water is conveniently supplemented while the composite paper is flattened, and the situation that the composite paper is prone to wrinkling due to the fact that water in the composite paper is evaporated to dryness during flattening is avoided.

The invention belongs to the technical field of metal stamping die production, and particularly relates to a controllable nitrogen cylinder capable of achieving delayed return stroke. Storage of high-pressure nitrogen and opening and closing and direction of high-pressure nitrogen flow are controlled through electric signals of electromagnetic valves, and the controllable nitrogen cylinder capable of achieving delayed return stroke is composed of two one-way valves, the three electromagnetic valves, a nitrogen cylinder body, an air storage cylinder and other devices. In the stamping forming process, during the return stroke of an upper die body of a die, after the upper die body and a workpiece reach a safe distance, a control signal is sent to the electromagnetic valves, and thus the return stroke of a piston of the controllable nitrogen cylinder is delayed. In this way, the collision damage of secondary deformation of a stamped part caused by the fact that a traditional common nitrogen cylinder cannot delay the return stroke is avoided.

The invention relates to an eyelet gasket and an eyelet fastener thereof. The eyelet gasket is provided with a gasket made of a plastic material and a sleeve piece made of a rigid material, the eyeletgasket is connected to a riveting piece; the eyelet gasket and the riveting piece are clamped and fixed on an object together; the gasket can deform in an extrusion state; the sleeve piece is provided with an annular baffle wall; an accommodating space for accommodating the gasket is defined by the baffle wall; an opening with caliber smaller than that of the gasket is formed at one end; the baffle wall deforms so that the caliber of the opening can be smaller than that of the gasket. A part of the gasket is positioned in the accommodating space, and the rest part of the gasket protrudes outof the opening to be in contact with the object, so that the gasket is in contact with the object to prevent the eyelet gasket from moving on the surface of the object, the riveting piece can be quickly mounted on the eyelet gasket to improve the production efficiency, and meanwhile, a base can be prevented from directly touching the object to cut the object.

The invention discloses an aluminum forged water meter. A shell of the water meter is manufactured through the steps that aluminum alloy is heated to 480+ / -5 DEG C and then placed in a die-forging die to be forged into the shell. The price of the whole aluminum forged water meter can be lowered by about 20%, the brightness of the water meter is improved by three times compared with that of water meters made of copper or iron or stainless steel, the density is increased, pores and water leakage are avoided, and the environment is not polluted in the forging process.

The invention belongs to the field of loudspeakers, and particularly relates to a tool and technology for shaping a loudspeaker voice coil. The tool for shaping the loudspeaker voice coil comprises a tool substrate and is characterized in that containing holes holding the loudspeaker voice coil are evenly formed in the tool substrate; the portion, at one side of each containing hole, of the tool substrate is provided with a lead groove used for holding one lead of the voice coil; the tool for shaping the loudspeaker voice coil further comprises ejection blocks matched with the containing holes; each ejection block comprises an ejection body and a holding portion; each ejection body and the corresponding holding portion are integrally arranged; the outer diameter of each ejection body is larger than the outer diameter of the voice coil and smaller than the inner diameter of each containing hole; the shaping technology of heating is conducted on the loudspeaker voice coil. According to the tool and technology for shaping the loudspeaker voice coil, the uniformity of the size of the voice coil can be effectively guaranteed and the stability of the quality of a loudspeaker is guaranteed.

The invention relates to the field of sliding bearings, in particular to an air bearing and a bearing matrix thereof and a manufacturing method. The air bearing comprises a shell and the bearing matrix arranged in the shell, the bearing matrix is manufactured in the mode that three-dimensionally braided plate block materials are bent and deformed and then connected end-to-end, the butt-joint surfaces are fixed through welding, and multiple strength strengthening points which are arranged at intervals in the circumferential direction and used for strengthening the strength of the bearing matrixare arranged on the circumference of the bearing matrix through a local heat treatment method. A large quantity of pores exist among metal wires in the three-dimensionally braided structure, influences of cutting machining on the material porosity can be avoided through overall sequential braided molding and welding after limiting and deforming, and meanwhile influences on the stability of the bearing matrix of the air bearing is avoided.