14results about How to "Avoid premature curing" patented technology

The utility model provides a film laminator for large-size FPC (Flexible Printed Circuit) lamination, relates to the technical field of flexible printed circuit board manufacturing, effectively solves the problems of unbalanced stress and template deformation of the traditional single oil cylinder drive by adopting a plurality of uniformly distributed oil cylinders, and greatly improves the lamination flatness and yield of large-size FPCs. The lower die plate is provided with a pressure sensor array, the pressure of the acting point of each oil cylinder is monitored in real time, the pressing process is optimized, and safety is ensured; an air knife cooling structure is arranged at the feeding port of the pressing cavity, it is ensured that the FPC is kept at a proper temperature before pressing, and the bonding effect between pressing layers is improved. In addition, the air knife cooling structure is provided with a temperature sensor and electrically connected with the motor, the working state of the motor driving oil pump is adjusted according to the real-time temperature, and proper temperature control in the whole pressing process is ensured. Through the technical improvement, the large-size FPC lamination quality is greatly improved, the service life of a product is prolonged, and meanwhile, the production efficiency and the stability are also improved.

The invention relates to a fireproof composite material deck which is composed of a foam sandwich and composite material skin layers arranged on the upper side and the lower side of the foam sandwich. The composite material skin layer comprises a fiber pouring layer and a hand lay-up layer. In implementation, the mode that the hand lay-up layer and the pouring layer are combined is adopted on the upper portion and the lower portion of the foam sandwich respectively, so that the upper surface and the lower surface of the composite material deck are both provided with efficient flame-retardant filler, the oxygen index of the composite material deck is larger than or equal to 36, and if the oxygen index is generally larger than or equal to 32, the composite material deck belongs to a flame-retardant material; and meanwhile, the ratio of the accelerant in the hand lay-up layer is relatively low, so that the pre-curing of the resin in the hand lay-up layer in the laying and pouring molding process can be effectively prevented, and the product quality is improved.

A furan resin sand filling device for a large metal casting mold relates to the technical field of part casting and comprises a feed box, a connecting pipe and a conveyor, the connecting pipe communicated with the feed box is arranged at the upper end of the feed box and rotatably connected with the feed box, the other end of the connecting pipe is connected with a stirrer, the conveyor is arranged on one side of the feed box, and a driving motor is arranged on the other side of the feed box. The driving motor drives the conveyor to rotate, one end of the conveyor is communicated with the material box, a discharging pipe is arranged on the lower portion face of the other end of the conveyor, and a flow guide pipe is arranged below the discharging pipe. The furan resin sand mixing device is high in practicability and very convenient to use, the baffle and the sealing plate are arranged on the discharging pipe, excessive contact between the mixed furan resin sand and oxygen is avoided, premature curing of the furan resin sand is avoided, and production materials are saved; and the grid, the vibrator and the exhaust pipe are arranged on the flow guide pipe, so that waste gas is absorbed during charging, and the body health of production personnel is ensured.

The invention relates to a preservation method for prolonging the usable time of sodium silicate-bonded sand, which comprises the following steps: putting mixed sodium silicate-bonded sand into a sealed container, and pumping out air in the sealed container by using a vacuum pump, so that the interior of the sealed container is preserved in a vacuum state. The usable time of the sodium silicate-bonded sand stored according to the method disclosed by the invention is obviously higher than that of the sodium silicate-bonded sand stored by the existing storage method in the production of the sodium silicate-bonded sand, and compared with the existing storage method, the method has obvious technical advantages, reduces the waste of the sodium silicate-bonded sand, saves resources, and has higher practical value and wide application prospect.

This application discloses an adhesive for aramid bulletproof materials, its preparation method, and its application. The adhesive for aramid bulletproof materials includes component A and component B. By total weight percentage, component A includes 4-6.5% acrylic resin, 5-7.5% blocked isocyanate, 1.2-1.5% silane solvent, and 1.8-2.0% wetting agent; component B includes 15-18% waterborne polyurethane, 8-10% epoxy resin, 1.0-2.0% epoxy resin solvent, 1.6-2.4% organosilicon crosslinking agent, 0.2-0.4% zinc catalyst, 0.12-0.25% epoxy resin curing agent, and 0.4-0.6% additives. The balance is deionized water. When using, component A and component B are mixed at a mass ratio of 1:(1-1.2). This invention solves the problem that existing adhesives for aramid bulletproof materials are difficult to achieve simultaneously with high toughness, high strength, and excellent interfacial stability.

The utility model discloses an automatic equipment of gluing and film covering and solidification, including unwinding and winding assembly, including the unwinding roll of being able to to the one end unwinding of release film, still including the winding roll of the other end winding of release film, coating and coating subassembly, including the parallel arrangement of adjacent load roller, coating roller, ration roller, and coating roller is located between load roller and ration roller, and the top of the junction of coating roller and ration roller forms coating accumulation space, and coating roller can adhere and carry coating, and when release film passes load roller, can receive the coating adhered on coating roller, solidification subassembly, to the release film of adhering coating carries out light solidification, stripping and transferring subassembly, including the conveyer belt of being able to convey board material, and the coating after solidification is transferred to the board surface from release film with the cooperation of release film and conveyer belt. Adopt this utility model with the help of release film to indirectly coat, realize coating even film covering.

The invention discloses a high-temperature RTM injection machine, and belongs to the technical field of injection machine equipment, the high-temperature RTM injection machine comprises a bottom plate, the top of the bottom plate is provided with an injection mechanism, a preheating mechanism, a material transfer mechanism, a vacuum mechanism and a control mechanism, the top of the bottom plate is fixedly connected with a mounting frame, and the injection mechanism comprises an injection tank rotationally mounted on the mounting frame; the injection cylinder is mounted at the top of the injection tank, an electric telescopic rod is mounted at the bottom of the injection tank, and the output end of the electric telescopic rod is fixedly connected with a piston head located on the inner side of the injection tank. Through the arrangement of the injection mechanism, the injection mechanism comprises an injection cylinder, an injection tank and a heat preservation heater, the structural design of integrating injection and heating is adopted, and the integration degree is high; the heating efficiency in the injection tank is high, the highest heating temperature is 300 DEG C, heating is uniform, and peripheral resin can be prevented from being cured in advance, so that injection failure is prevented; meanwhile, the injection cylinder and the injection tank have the automatic rotating function, and operation, cleaning and maintenance are convenient.

The invention belongs to the technical field of microelectronic packaging, and relates to an anisotropic conductive adhesive film with low pre-pasting temperature and a preparation method thereof. The surface performance of the special anisotropic conductive film (ACF) can be effectively improved by adopting a low-temperature plasma treatment technology, the bonding performance of the ACF and a substrate is further improved, working gas is ionized in a physical mode, plasma containing high-energy particles is generated, the high-energy particles collide with the surface of the ACF, the surface of the ACF is activated, and the surface of the ACF is activated. Compared with the prior art, the method has the advantages that the surface energy is increased, so that the bonding force between the ACF and the substrate is enhanced, the pre-pasting performance of the ACF can be remarkably improved on the premise that the chemical property of the ACF is not changed, the pre-pasting temperature of the ACF adhesive film in the using process is further reduced, and the problem of advanced curing caused by too high temperature is avoided.

The invention provides a production method and equipment of a marine electrical fireproof material. The production method comprises the following steps: S1, drying raw materials; s2, preparing master batches under a low-temperature condition; s3, high-temperature curing is conducted through melt molding; and S4, post-processing. The production method provided by the invention can effectively prevent a carbon layer from cracking, significantly improve the high temperature resistance of the material, and realize uniform dispersion of refractory components in a resin matrix.

The invention relates to the technical field of micro-nano processing, in particular to a group coating and bonding method and application thereof. According to the method, the curing agent and the prepolymer are sequentially coated on the surface of the substrate material to obtain the substrate containing the coating layer coated in a layered manner, so that the problem that the mixture is cured in advance after the prepolymer and the curing agent are mixed in the traditional process is effectively avoided, the coating quality in the subsequent coating process is further ensured, the operation process is simple and convenient, the controllability is remarkably improved, and the method is suitable for industrial production. Meanwhile, the prepared adhesive layers have good bonding performance, the cracking phenomenon in the coating process is avoided, and the stability and reliability of the whole adhesive layer structure are improved.

The invention belongs to the technical field of battery production, and discloses a battery cell bonding method and a battery cell bonding production line, the battery cell bonding method comprises the steps of pre-fixing, glue filling and glue curing, the pre-fixing comprises the steps of preventing a cooling plate, placing a battery cell on a first profiling surface of the cooling plate, and enabling the side wall of the battery cell to be in contact with the first profiling surface; according to the battery cell bonding method, the bonding efficiency of the battery cell can be improved, and the situation that the battery cell is damaged before the battery cell is placed on the first profiling surface can be avoided. The battery cell is pressed on the first profiling surface, glue filling comprises the step of injecting glue into a gap between the side wall of the battery cell and the first profiling surface, and glue curing comprises the step of irradiating ultraviolet rays and / or blowing air to the glue until the glue is cured. And part of glue is cured in advance.

The application discloses a patch bubble pressing and forming device for a packaging box, relates to the technical field of bubble pressing and forming devices, and comprises a first roller pressing mechanism, a vertical bubble pressing mechanism and a second roller pressing mechanism. The first roller pressing mechanism is arranged on one side of a device main body and located at the upper end of a pressing table. An elastic assembly is arranged in the pressing table. The lower end of the vertical bubble pressing mechanism is provided with a pressing plate. Vent holes are arranged at the center of the lower end of the pressing plate. The second roller pressing mechanism is installed on the upper end of the device main body and located on one side close to the vertical bubble pressing mechanism. When pressing the bubble, the pressing plate at the lower end of the vertical bubble pressing mechanism first presses the bubble, the first roller at the lower end of the first roller pressing mechanism then performs roller pressing along the X-axis direction of the device main body, the second roller at the lower end of the second roller pressing mechanism finally performs roller pressing along the Y-axis direction of the device main body.

The invention discloses a processing technology of an electronic candle mold, and relates to the technical field of electronic candle mold preparation, and the processing technology comprises the following steps: step 1, raw material preparation, step 2, stirring and mixing, step 3, vacuum treatment, step 4, female mold blank treatment, step 5, mold frame enclosing, step 6, silica gel pouring, and step 7, heating and curing. The silica gel and the curing agent are prepared and mixed through the stirring machine, the phenomenon that the silica gel of the manufactured candle is not uniformly cured is avoided, the female die frame is enclosed through the battens, then the mixed silica gel is slowly poured into the die frame along one corner of the wood frame, and the candle is formed. And silica gel is made to move evenly in a mode of vibrating the wooden frame, gas in the silica gel can flow out easily, bubbles are not likely to appear on the surface of the cured candle mold, finally, the mold frame and the silica gel are heated through a drying lamp, curing forming of the candle mold can be accelerated, and the beneficial effects that bubbles on the surface of the mold can be reduced conveniently, and mold stripping is rapid are achieved.

The utility model discloses an automatic filling machine, which belongs to the technical field of automatic filling, and comprises a processing table and a filling structure, the filling structure used for filling photocuring orthodontic adhesive is arranged above the processing table, the filling structure comprises a light shield and a filling head, the top center of the light shield is in sliding fit with a connecting column, and the top center of the light shield is in sliding fit with the connecting column. A limiting plate is fixedly installed at the position, in the light shield, of the bottom of the connecting column, a filling head is fixedly connected to the bottom of the limiting plate, and the filling head is arranged on the upper portion in the light shield. By arranging the light shield, a light source can be prevented from irradiating a photocuring adhesive in the filling process, the adhesive is prevented from being cured in advance or reducing the efficiency of the adhesive, the product percent of pass and the use effect of the photocuring adhesive are guaranteed, the bottom cover is arranged at the bottom of the light shield, the light shielding effect is further improved, and the production cost is reduced. And meanwhile, the photocuring orthodontic adhesive container can be conveniently aligned with the filling head during filling.