36results about How to "No appearance defects" patented technology

The invention provides a heatproof lyoprotectant for a live vaccine against pseudorabies. The heatproof lyoprotectant comprises, by weight, 3 to 10 parts of gelatin, 1 to 5 parts of trehalose, 5 to 15 parts of sucrose, 0.1 to 2 parts bovine serum albumin, 1 to 8 parts of tryptone, 2 to 10 parts of enzyme-hydrolyzed casein, 1 to 5 parts of thiourea, 0.8 to 2 parts of L-monosodium glutamate, 0.1 to 3 parts of arginine, 0.5 to 5 parts of polyvinylpyrrolidone (PVP-K30) and 0.1 to 2 parts of mannitol. The invention also discloses a preparation method of the heatproof lyoprotectant and a lyophilized vaccine prepared from the heatproof lyoprotectant. When the heatproof lyoprotectant is used for protecting the vaccine and a specific lyophilization process is employed, lyophilization loss of viruses can be effectively reduced, the temperature tolerance of the viruses can be improved, and the vaccine can still maintain good physical properties and titer after long-term storage; i.e., the vaccine has stable characters and has the characteristics of heat resistance and long storage time.

The invention provides a low-density high-fluidity high-rigidity talcum powder filled polypropylene material which is prepared from the following components in parts by weight: 30-60 parts of high-fluidity homo-polypropylene, 5-25 parts of high-fluidity co-polypropylene, 5-20 parts of a high-fluidity ethylene-octylene copolymer, 2-8 parts of talcum powder, 1-2 parts of a color master batch, 0.2-0.4 part of a main antioxidant and 0.2-0.4 part of an auxiliary antioxidant. According to the low-density high-fluidity high-rigidity talcum powder filled polypropylene material disclosed by the invention, the material maintains high rigidity under the condition that the filling amount of the talcum powder is small. The parts prepared by using the material can be kept at good functionality.

The invention provides a rotational core pulling mechanism for an injection mould, belongs to the technical field of moulds, and aims at solving the problems of long production period and poor positioning reliability of the existing die injection adopting the rotational core pulling mechanism. The mechanism comprises a rotational core pulling block which is hinged with a movable mould embedding block, wherein a forming part for forming an inwards-concaved inverted buckle of a plastic part is arranged at the lower part of the rotational core pulling part; a driving structure is arranged between a movable mould seat board and the rotational core pulling block and is used for driving the rotational core pulling block to rotate around a point where the rotational core pulling block is hinged with the movable mould embedding block during mould opening; a spring is arranged between the movable mould seat board and a movable mould board and is used for enabling the movable mould board to cling to a fixed mould board all the time within a specified mould opening range; a pulling structure is arranged between the movable mould seat board and the movable mould and is used for pulling the movable mould board to separate from the fixed mould board when the mould opening distance is beyond the specified distance. The mechanism has the advantages that the mould injection production cycle can be effectively reduced, and persistent reliable positioning can be achieved.

The invention discloses a rotary kiln body pair-combining splicing-assembly alignment device and a construction method and belongs to the technical field of rotary kiln installation. The rotary kiln body pair-combining splicing-assembly alignment device comprises a barrel body, the barrel body is composed of seven barrel sections, the inner surface of each barrel section is provided with a lengthways adjusting device and a radial adjusting device correspondingly, each lengthways adjusting device is composed of a fixed support seat, an inner side nut, a fixed screw rod and an outer side nut, and each radial adjusting device is composed of an L-shaped fixed block, a radial adjusting nut and a radial adjusting bolt. By means of the rotary kiln body pair-combining splicing-assembly alignment device and the construction method, the barrel body is divided into parts and performed ground splicing-assembly, lifting in the air is performed after the barrel body is formed into segments by splicing-assembly, the work efficiency is effectively improved, the construction cost is lowered, when the welding line separation distance of the adjacent barrel sections is larger or smaller, adjustment can both be performed through the lengthways adjusting devices, sunken positions can further be jacked up utilizing the radial adjusting bolts, and the fact that the barrel body has integrity and no appearance defects after construction is finished is guaranteed.

The invention provides a spray method for a carbon-doped coating on a spherical surface. The spray method comprises the following steps of clamping a manual spray gun in a robot arm; clamping a spherical workpiece in a spray device; proportioning a coating; spraying by using a robot; performing curing treatment. According to the spray method for the carbon-doped coating on the spherical surface, the appearance quality and the thickness uniformity of the coating on the spherical surface are improved, the surface roughness Sa is smaller than 1.6mu m, and the thickness uniformity reaches +/-5mu m.

The invention relates to a reduced glutathione for injection and a pre-freezing method thereof. The pre-freezing method includes the following steps that S1, a glutathione solution is prepared and filled; S2, the partition plate temperature of a freeze-drying machine is reduced to be -25 to -35 DEG C; S3, the filled glutathione solution in the step S1 is put on a partition plate of the freeze-drying machine after the step S2 is completed, constant temperature is kept for 2 to 6 hours after the temperature of a product is reduced to be -25 to -35 DEG C, and a reduced glutathione frozen body is obtained, wherein a vacuum pump is started within 0.5 to 1 hour before constant temperature completion in the step S3 to enable the vacuum degree to be smaller than 10 Pa. The reduced glutathione used for injection and prepared by means of the pre-freezing method has the advantages of being high in safety, simple in freeze-drying operation, good in resolubility and stable and reliable in product quality.

The invention discloses a segmented automobile instrument board. The automobile instrument board comprises an instrument board body, a left decorative cover board, a combined instrument hood, a central left decorative cover board, a central control panel and a right decorative panel, wherein the left decorative cover board, the combined instrument hood, the central left decorative cover board, the central control panel and the right decorative panel are sequentially connected to the instrument board body in a clamping manner from left to right; the central left decorative cover board and the right decorative panel are connected with the instrument board body through self-tapping screws. The invention further discloses an assembly method of the segmented automobile instrument board. According to the assembly method disclosed by the invention, a topic appearance surface is cut into a plurality of modules, and then the modules are assembled, so that the instrument board is flexible in color matching, and the instrument board can meet individualized demands of users.

The invention discloses a freezing-drying method for live vaccine. The freezing-drying method comprises the steps that the eutectic point range of a to-be-frozen and to-be-dried vaccine is tested, then, the live vaccine is placed in a vacuum freezing-drying machine pre-cooled to 0+/-1 DEG C, when the temperature of a plate layer of the vacuum freezing-drying machine is reduced to be higher than the eutectic point of the live vaccine by 1-2 DEG C, the current state is kept for 1-2 h, and continuous cooling is conducted with the rate of 1 DEG C/h till all vaccine is frozen; and cooling is immediately conducted to the temperature needed for sublimation, and finally vacuum sublimation is conducted according to the normal procedure. The product obtained through the method is not provided with large ice crystals, sublimation is easy, and after freezing-drying, a good product physical behavior can be obtained, and the freezing-drying titer losses are minimal.

The invention relates to a hidden knob, a switch and a lockset. The hidden knob comprises a handle (1) and a rotating disc (2), the handle (1) is composed of a left handle body (11) and a right handle body (12) which can rotate towards the two sides respectively, the bottoms of the left handle body (11) and the right handle body (12) are fixed to the rotating disc (2), and the tops of the left handle body (11) and the right handle body (12) form a handle after being vertical. And the tops of the left handle body (11) and the right handle body (12) are overturned towards two sides and then attached to the rotating disc (2) to form a plane parallel to the rotating disc (2). And the knob is used for a switch or a lockset. Compared with the prior art, the hidden knob has the advantages of long service life, safety, reliability, wide application range and the like.

The invention provides a screw pump stator rubber bushing forming device and method. The screw pump stator rubber bushing forming device comprises a gear pump, a flange, an extruder, a temperature control system and a control panel, wherein the flange is fixedly connected with one end of the gear pump and provided with an arc-shaped end surface, the extruder is fixedly connected with the other endof the gear pump, the temperature control system and the control panel are located below the extruder and are connected with the forming device, the screw pump stator rubber bushing forming device further comprises a screw pump stator pipe which is in spherical linear sealing connection with the arc-shaped end surface of the flange provided with the arc-shaped end surface, a forming runner is arranged in the screw pump stator pipe, a Y-shaped runner is arranged at the joint between the screw pump stator pipe and the arc-shaped end surface of the flange provided with the arc-shaped end surface, and Y-shaped runner double-head end surface runner openings communicate with a forming runner in the screw pump stator pipe. According to the screw pump stator rubber bushing forming device and method, the technical problems that in the prior art, rubber with relatively large viscosity is difficult to inject, a large-scale product injection runner is too long, equipment investment is large and the like are solved, the structure is simple and compact, the work is reliable, the automation degree is high, the production efficiency is high, and plasticizing molding metering continuity is realized.

The invention discloses a shrinkage mold core structure capable of horizontally shrinking and free of material shortage at the edge. The shrinkage mold core structure comprises a power wheel and a guide block, wherein, the guide block is parallel to the power wheel, the guide block is located above the power wheel, a shrinkage assembly is arranged above the guide block, and the power wheel drives the shrinkage assembly, so that the shrinkage assembly expands or shrinks. According to the shrinkage mold core structure, when a mold core works, the outer circle can be shrunk to be small in size, and no large gap exists in the peripheral shape when the mold core is reset; due to the fact that the gap is small, the quality of a machined product is guaranteed, and the automatic production is achieved; and no too large gap exists between the spliced mold core sliding blocks, and produced parts do not have appearance defects.

The invention discloses a printable magnetized composite film and a preparation method thereof. The printable magnetized composite film comprises three layers: the upper layer is a protective layer, the middle layer is a magnetized layer and the lower layer is a printing layer; the protective layer is used to protect the magnetized layer and the protective layer has a thickness of 1 to 2 micrometers; the magnetized layer has a thickness of 0.01 to 0.1 mm; materials of the protective layer comprise varnish; and the magnetized layer comprises the following components in parts by weight: 600-1000parts of soft magnetic powder, 80-120 parts of a polymer binder and 0-10 parts of an auxiliary material. The obtained printable magnetized composite film can reduce the thickness of an entire magnetic printing material on one hand, and can avoid the phenomenon that the magnetic printing material cannot be used due to the failure of a double-sided adhesive on the other hand, and has high suction and an anti-aging characteristic.

The invention relates to the technical field of injection molds, in particular to an injection mold adopting an inverted rubber intake mode. The injection mold has a baseplate, a thimble lower plate, a thimble upper plate, a movable mold, a fixed mold and a panel arranged in sequence, wherein a rubber injecting port is formed in the middle position of the baseplate; a rubber injecting nozzle penetrating through the thimble lower plate, the thimble upper plate and the movable mold in sequence is inserted in the rubber injecting port; and a positioning ring for fixing the rubber injecting nozzle is arranged in the middle position of the baseplate. The rubber intake mode of the injection mold adopting the inverted rubber intake mode is safer and more reliable; the product has no appearance defect; the product quality is greatly enhanced; and in particular, the injection mold is suitable for producing products having special structures and products having higher surface requirements.

The invention is applied to the technical field of the industrial flaw detection industry and the radiological medicine industry, and particularly relates to a casting method of an S-channel depleted uranium shielding body. The casting method comprises the following steps: an S-shaped stainless steel tube is coated with a zirconium oxide and yttrium oxide coating by adopting a plasma spraying technology; a cold uranium sleeve is additionally arranged at the exterior of the S-shaped stainless steel tube provided with the zirconium oxide and yttrium oxide coating; depleted uranium molten metal flows down along a runner exactly above a mould for casting, wherein a casting mode adopts transverse casting, the middle of an inner cavity of the mould is spherical and the two ends of the inner cavity of the mould are rectangular; after the previous treatment is carried out on the S-shaped stainless steel tube, primary casting is carried out, a core having a small size is formed, and then the core is subjected to secondary casting. The S-channel depleted uranium shielding body cast by the casting method is used for nondestructive flaw detection equipment.