4795 results about "Hot press" patented technology

The invention provides a plastic cellular board hot-pressing defect identification method and system, and relates to the technical field of defect identification. The method comprises the following steps: monitoring the position of a plate and generating position information; applying instantaneous local thermal excitation to the surface of the plate to generate a thermal excitation area; optical image data and infrared thermal image data are collected; obtaining temperature difference data according to the infrared thermal image data; distortion correction and noise filtering are carried out on the optical image data to obtain corrected optical image data; registering the temperature difference data with the corrected optical image data to obtain registered multi-modal data; and the defect problem is judged by analyzing the registered multi-modal data. The method provided by the invention overcomes the problem that the defect optical and infrared thermal imaging characteristics are difficult to recognize along with time attenuation when the plate is in a rapid moving and continuous cooling environment, and realizes robustness recognition and accurate positioning of hot pressing defects below millimeter level.

The invention relates to the technical field of hot-press forming devices, and discloses an efficient hot-press forming device and process for a cedar homogeneous plate, the efficient hot-press forming device comprises a rack, two hydraulic cylinders are mounted on the rack, the output ends of the two hydraulic cylinders are fixedly connected with a pressing plate, an upper die is fixedly mounted on the bottom surface of the pressing plate, and a lower die is mounted on the rack; the rolling assembly is used for rolling and flattening the plate; the positioning assembly is used for centering and positioning the plate; and the sealing assembly is used for sealing a gap between the upper die and the lower die during hot pressing. Through the arrangement of the calendaring assembly, the two pressing rollers roll the surface of the plate from the middle to the two sides before the upper die makes contact with the plate, so that the local protruding and bulging parts are flattened, when the upper die makes contact with the plate, the surface of the plate can keep certain flatness, and it is ensured that stress is uniform during hot pressing.

The invention discloses a printed circuit board production parameter intelligent dynamic optimization method and system, and relates to the technical field of circuit board processing optimization, and the method comprises the steps: monitoring the real-time temperature data of a lamination part in real time; processing the real-time temperature data, and identifying a temperature unstable region in the production process; screening hot pressing roller process sections with stable temperature distribution to execute lamination operation; evaluating the risk level of the current lamination process; screening a low-risk temperature distribution mode based on the risk level to carry out lamination production, obtaining a quality deviation coefficient, and judging whether a preset process standard is met or not based on the quality deviation coefficient; and for products which do not meet the preset process standard, temperature control parameters in the production process of the products are traced, and the temperature set value of the hot pressing roller is dynamically adjusted. The method has the advantages that the real-time quantitative evaluation of the wear state of the hot pressing roller is realized, and the line width precision control capability and the interlayer alignment consistency are remarkably improved.

The invention discloses a preparation method of a degradable transparent conductive polymer film, and belongs to the technical field of film preparation. Preparing dispersion liquid I through graphene oxide quantum dots; preparing a dispersion liquid II from polyaniline nanofibers; dissolving pyrrole and toluenesulfonic acid in N, N-dimethylformamide to prepare a reaction solution, adding the dispersion liquid I and the dispersion liquid II, stirring, and adding ferric chloride hexahydrate to obtain a reaction solution; adjusting the pH value of the reaction solution to 1.5, and heating to obtain a polypyrrole solution; preparing cellulose acetate, polyvinyl alcohol and N, N-dimethylformamide to obtain a cellulose acetate solution; mixing the polypyrrole solution and the cellulose acetate solution, adding glutaraldehyde to obtain a mixed solution, and pouring the mixed solution into a mold to prepare a composite wet film; and putting the composite wet film into a hot-pressing forming machine for hot-pressing to generate the polymer film. The conductive polymer film prepared by the invention can be applied to the fields of supercapacitor electrode materials, electromagnetic shielding materials, flexible sensors and the like, and provides a new high-performance material choice for the development of related fields.

The invention relates to the technical field of display panel manufacturing, in particular to a liquid crystal module hot-pressing binding method based on intelligent temperature control, which comprises the following steps: step 1, hot-pressing area partitioning and dynamic temperature calibration: dividing a contact surface of a hot-pressing head into a plurality of independently controlled temperature areas, each area is provided with at least one temperature sensor, and the temperature sensors in all the areas are calibrated through thermal imaging equipment, so that the deviation between the sensors and the real temperature is eliminated; 2, dynamic temperature compensation and pressure cooperative control are carried out; step 3, iteratively optimizing hot pressing process parameters, and training the deep learning model based on historical binding data to predict an optimal temperature-pressure parameter combination of a next binding period; and automatically correcting the initial temperature threshold in the step 1 and the target pressure in the step 2 according to a prediction result. Through the intelligent temperature control and pressure cooperative control technology, the temperature and pressure in the hot pressing process of the liquid crystal module are accurately adjusted, and the bonding quality and the production efficiency are remarkably improved.

The invention relates to the technical field of all-solid-state lithium metal batteries, in particular to a cellulose paper-based polymer solid electrolyte as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing N-methylacetamide and lithium bis (trifluoromethanesulfonyl) imide to obtain a eutectic solvent; the preparation method comprises the following steps: mixing a eutectic solvent, polyethylene glycol oxalate, acrylamide and a thermal initiator to obtain a eutectic polymer electrolyte precursor; and soaking cellulose paper in the eutectic polymer electrolyte precursor, and carrying out hot-pressing polymerization to obtain the cellulose paper-based polymer solid electrolyte. The cellulose paper-based polymer solid electrolyte prepared by the invention is soft in texture and can be better attached to an electrode, the problem of poor contact between the electrode and an electrolyte interface is solved, and the interface impedance is reduced by fusing the characteristics of low viscosity and high conductivity of the eutectic solvent and the supporting effect of the cellulose paper; the ion transmission efficiency is improved, and conditions are provided for long-term stable circulation of the battery.

The invention relates to the technical field of sealing ring hot-press forming, discloses sealing ring hot-press forming equipment, and aims to solve the problems of low finished product taking-out and mold cleaning efficiency and low automation degree in the prior art. The equipment comprises a hot press base, a hot press base and a lower die which are arranged on the hot press base, and a hot press plate and an upper die which are arranged above the hot press base in a lifting manner. The pushing part and the scraping part which work in a linkage mode are arranged, and the pushing part comprises a lifting supporting and pushing piece driven by an electric rod and a top ring and is used for upwards ejecting out a sealing ring formed in a lower mold; the scraping part comprises a rotation guiding part for enabling the supporting and pushing part to rotate during ascending and descending and a silica gel scraper which is elastically connected to the top ring and can be unfolded in the ejection process, and when the electric rod drives the pushing part to ascend to eject out the sealing ring, the rotation guiding part enables the pushing part to integrally rotate, the silica gel scraper is driven to be tightly attached to and scrape the inner wall of the lower mold, and residual rubber is scraped; the production cycle is shortened, and the production efficiency and the automation level are improved.

The invention discloses a carbon fiber composite material sound barrier forming device, and relates to the technical field of sound barrier forming, the carbon fiber composite material sound barrier forming device comprises a working bottom table and a first supporting column, the first supporting column is fixedly connected to the top surface of the working bottom table, an upper mold is installed on the lower surface of the top end of the first supporting column, a sound insulation barrier is arranged on the working bottom table, and an auxiliary assembly is arranged on the working bottom table; production and forming of the carbon fiber composite material sound barrier are divided into simultaneous operation of four stations with coherent processes, the four stations do not interfere with one another during operation, and the problems that in the traditional hot press forming process, equipment is in an idle state during cooling, demolding and other steps, four stations are adopted for simultaneous operation, and when one station is used for cooling and demolding, the equipment is not in an idle state are solved. Other stations can be used for machining, residue removal or release agent spraying, feeding and other operations, the equipment utilization rate is greatly improved, no obvious intermittency exists in the production process, and therefore more carbon fiber composite material sound barriers can be produced in unit time.

The invention discloses an epoxy resin-based NTC (Negative Temperature Coefficient) composite material containing ionic liquid and carbon black as well as a preparation method and application of the epoxy resin-based NTC composite material. The preparation method of the material comprises the following steps: mixing the ionic liquid and the epoxy curing agent, heating on a heating table, stirring and mixing at the same time, then adding the epoxy resin, the carbon black, the surfactant and the solvent, mechanically stirring and uniformly mixing, and heating in a vacuum oven to remove the solvent to obtain the material. And then carrying out hot pressing for a certain time through a press vulcanizer at a certain temperature to obtain the epoxy resin-based NTC composite material containing the ionic liquid and the carbon black. The epoxy resin-based NTC composite material containing the ionic liquid and the carbon black has the advantages of high B value, good mechanical strength, high heat conductivity coefficient, high crosslinking density and the like, and the preparation method is simple to operate, mild in reaction condition, low in raw material cost and suitable for large-scale industrial production and application.

The invention relates to the technical field of composite materials, in particular to a heat and sound insulation PVB intermediate film and a preparation method thereof. The problem that a PVB intermediate film is insufficient in heat insulation and aging resistance is solved. The preparation method comprises the following steps: pre-plasticizing PVB resin, shearing and mixing the pre-plasticized PVB resin and silane coupling agent modified enhanced nano cellulose, sequentially adding additives such as a plasticizer, molybdenum trioxide loaded lanthanum hexaboride, a composite light stabilizer and modified cerium oxide, and carrying out tape casting and hot pressing treatment to obtain the PVB intermediate film. Wherein the modified lanthanum hexaboride enhances infrared ray shielding, the composite light stabilizer and the modified cerium oxide synergistically improve the aging resistance, all the components are subjected to substance cooperation and process cooperation, comprehensive improvement of heat insulation, sound insulation and aging resistance of the PVB intermediate film is achieved, and the PVB intermediate film is suitable for the field of high-strength building glass.

The invention provides an aviation composite material hot-press forming workpiece loading method based on a hybrid optimization algorithm. The method comprises the steps that workpiece demand information and autoclave platform information in composite material hot-press forming manufacturing are obtained; minimizing the opening times of the autoclave as a target function; establishing a two-dimensional multi-layer platform hot press molding workpiece loading model, defining space constraints, distribution constraints, resource constraints and type constraints among workpieces, and incorporating the constraints into model constraint conditions; a GA-SP is adopted to optimize a workpiece loading sequence and a rotation state, an optimal layout is generated through chromosome coding, decoding, selection, intersection and mutation operations, a hybrid optimization algorithm is constructed in combination with a neighborhood search strategy, efficient arrangement of workpieces on different platforms is realized in combination with a simulated annealing criterion, and an optimized loading scheme is output. The production efficiency of the hot press molding procedure can be improved, the manufacturing cost is reduced, and efficient technical support is provided for intelligent manufacturing of aviation composite materials.

The invention belongs to the technical field of plastic coiled material forming, and discloses a waterproof coiled material forming machining device and method with multi-connecting-rod transmission and two-way clamping, the waterproof coiled material forming machining device comprises a base, a feeding execution assembly, a roller clamping assembly, a hot press forming assembly and the like, and rapid clamping and centering positioning of a coiled material roller are achieved through a two-way threaded driving rod and a sliding clamp; through meshing transmission of the bevel gear set, self-adaptive adjustment of the limiting compression roller is achieved, and the stability of coiled material conveying is ensured; traditional pneumatic dust removal is replaced with mechanical elastic impact dust removal, and the cleaning efficiency is improved; and hot press molding and laser cutting procedures are seamlessly connected, so that the production efficiency and the product quality are improved. The method comprises the complete processes of coiled material roller feeding, clamping, limiting, dust removal, hot press forming, cutting and material pushing. The device has the advantages of being accurate in feeding, stable in clamping, efficient in dust removal, high in forming and cutting precision and the like, and the production efficiency and the product quality of waterproof roll forming machining are remarkably improved.

The invention relates to the technical field of high-entropy ceramic preparation, and particularly discloses (TiZrNbHfTaV) C-SiC high-entropy composite ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing the (TiZrNbHfTaV) C-SiC high-entropy composite ceramic consisting of double phases of (TiZrNbHfTaV) C and SiC by adopting a rapid hot pressed sintering technology. The preparation process is simple and efficient, and large-scale industrial application is facilitated; the prepared multiphase ceramic is high in density, uniform in organization structure and reasonable in component design, the multiphase ceramic shows excellent mechanical properties, and the hardness, the fracture toughness and the wear rate are 34.00 GPa, 6.4 MPa.m < 1 / 2 > and 1.8 * 10 <-6 > mm < 3 > N <-1 > m <-1 > respectively. Compared with the traditional binary carbide ceramic, the (TiZrNbHfTaV) C-SiC high-entropy composite ceramic disclosed by the invention has excellent hardness and toughness, and the friction and wear properties are remarkably improved.

The invention provides a battery diaphragm and a preparation method thereof, and the battery diaphragm comprises a base film and a bonding layer, the bonding layer is formed on at least one side of the base film, the bonding layer comprises a PVDF polymer, and the PVDF polymer comprises a core region containing VDF and a shell region covering the core region and containing HFP. Therefore, the bonding layer can exert high bonding force with the pole piece under a certain pressure at the hot pressing temperature from 25 DEG C to 120 DEG C.

The invention relates to the technical field of reverse osmosis membrane supports, in particular to a polyester non-woven fabric and a preparation method and application thereof.The preparation method comprises the steps that S1, polyester main body fibers and polyester adhesive fibers are used as raw materials to prepare high-quantitation original cloth M0 and low-quantitation original cloth H0; carrying out hot pressing pretreatment on the H0 to obtain a product H0 '; s2, overlapping and hot-pressing M0 and H0 'to obtain a composite non-woven fabric M1H1; s3, the M1H1 is impregnated with a functional solution, and the functional solution contains para-aramid nanofibers and nano calcium carbonate modified by hexadecyl trimethyl ammonium bromide; and then carrying out cold pressing on the composite non-woven fabric impregnated with the functional solution to obtain the nano-material modified composite non-woven fabric. And S4, carrying out secondary hot pressing treatment to obtain the polyester non-woven fabric. The polyester non-woven fabric can effectively avoid the problems of excessive curling, excessive permeation of a polysulfone solution and the like during curing after being coated with polysulfone, and is more beneficial to application in a reverse osmosis membrane.

The invention discloses a method for retarding black spot wrinkles of a PMMA (Polymethyl Methacrylate) gluing diaphragm lithium battery pole piece, which comprises the following steps: S1, adjusting parameters of a winding machine, adjusting the distance between pole pieces and tabs according to different parameters, and winding a battery cell; s2, performing hot pressing on the wound roll core by using different hot pressing parameters; s3, the hot-pressed roll core is assembled, put into a shell and fully charged in a capacity grading mode; wherein the parameter of the winding machine is embossing pressure; the hot pressing parameters comprise temperature, pressure and time. Therefore, by selecting the most appropriate embossing pressure and hot pressing parameter, black spots and wrinkles on the lithium battery interface of the PMMA glued diaphragm can be relieved, so that the electrochemical performance and the safety performance of the battery are improved.

The invention provides continuous hot-pressing equipment for producing a three-in-one outdoor jacket, which belongs to the technical field of outdoor jacket production and comprises a preheating conveying mechanism, a hot-pressing mechanism and a waste heat recovery mechanism. The preheating conveying mechanism pre-irons the outdoor jacket through a conveying belt and a high-temperature roller, and is matched with the airflow clothes opening assembly to automatically separate clothes bodies through upper and lower air suction nozzles and sleeve the clothes bodies to a clothes body opening rod, so that automatic operation is realized; the hot-pressing mechanism completes the compounding of multiple layers of materials through a hot-pressing plate with precise temperature control and an electric air cylinder; the waste heat recovery mechanism collects 180 DEG C hot air generated by hot pressing, heat is transferred to the roller through the water tank and the heat conducting plate, and energy recycling is achieved. The problems that in the prior art, an integral hot pressing plate is high in energy consumption, heat distribution is not flexible, waste gas is directly discharged, and manual sleeving efficiency is low are solved.

A preparation method of a motor winding comprises the following steps that S1, conductor line segment cutting and insulation paste caulking and fixing are completed on a prefabricated copper plate blank workpiece, and the relative positions of a segmented wire body and a visual positioning hole are kept consistent; s2, conductor lead wire and short circuit wire cutting; S3, conductor lead wire and short circuit wire caulking fixation with insulation glue; s4, carrying out secondary thermocuring on the UV photocuring adhesive on the workpiece to obtain a final joint filling and fixing effect; s5, removing residual glue on the conductor copper plate; s6, cutting internal and external electric connection points of the conductor copper plate, and performing laser cutting on the internal and external electric connection points of the conductor to form independent electric connection points; winding hot pressing and electrical connection point connection are carried out, multi-layer stacking is carried out on the conductor copper plates and the PP sheets, internal and external electrical connection points connected with each other are aligned, the stacked conductor copper plates and the PP sheets are fixed, and the conductor copper plates and the PP sheets are placed in a vacuum hot press for bonding pressing of the conductor copper plates and the PP sheets and electrical connection of the upper and lower electrical connection points at the corresponding positions.

The utility model discloses a product package conveying device which comprises a base, a feeding belt arranged at an opening in the top of the outer wall of the base, and a film covering feeding assembly arranged on one side of the outer wall of the base and used for covering the outer wall of the base. Wherein the film covering and feeding assembly comprises a feeding shell, a cutting frame, a feeding wheel, a guide wheel set, a rubber wheel, a lifting air cylinder, a lifting frame, a cutting motor, a transmission wheel set and a rotary cutter, and the feeding shell is fixedly arranged on one side of the outer wall of the base. When ports of goods are contracted and supported, dislocation is avoided in the process of moving and hot pressing of long edges of the bottom of a covering film, attractiveness and accuracy of sealing point positions are guaranteed, dislocation of the covering film is avoided before folding and in the moving process of the goods, meanwhile, stable and gradual port seam hot pressing sealing is achieved, and the sealing efficiency is improved. The problems of seam dislocation and non-uniform sealing point positions are avoided, the stability of the hot-pressed seam of the laminating film is guaranteed to the maximum extent, and the structural strength of the laminating film is guaranteed.

The invention discloses a hot pressing device with a temperature control structure and a temperature control method, and belongs to the technical field of plywood processing, the hot pressing device comprises a rack, and hot pressing plates are uniformly arranged in the rack. The temperature control mechanism is arranged at the end of the machine frame, in the temperature rising process, according to the temperature difference and air pressure changes of the two ends of the interior of the first hollow pipe, movement of the piston can be controlled, the opening size of the flow dividing pipe is increased, the steam inlet amount is increased, and the hot pressing plate is rapidly heated; the temperature difference between the two ends of the first hollow pipe is reduced, the air pressure area is stable, a tension spring controls a piston to reset, stable air inflow is conducted on the flow dividing pipe, in addition, when steam exhausted by the flow collecting pipe is too high, due to deformation of a bimetallic strip, a partition plate can be controlled to move towards the interior of the flow dividing pipe, the air inflow amount is reduced, and therefore the temperature is prevented from being too high; and temperature control adjustment can be automatically carried out, the functionality of the device is improved, and the quality and speed of hot pressing are guaranteed.

The invention relates to the technical field of model generation, in particular to a three-dimensional digital model generation method and system based on a glass fiber reinforced plastic streamline headstock. The method comprises the following steps: testing the whole hot-press molding process of a standard glass fiber reinforced plastic sample to obtain the thermal expansion coefficient of the glass fiber reinforced plastic material; constructing a glass fiber reinforced plastic shrinkage tensor field based on the glass fiber reinforced plastic material thermal expansion coefficient; performing paving layer path topological relation construction on the headstock fiber paving layer to obtain a headstock paving layer path diagram; performing path-process coupling deformation prediction on the headstock fiber bundle based on the headstock layering path diagram to obtain layering path deformation prediction data; and obtaining an initial vehicle head three-dimensional model. According to the method, the risks of superspeed train rendezvous pressure wave exceeding and sensor false triggering are remarkably reduced, the design precision is integrally improved, the iteration period is shortened, and the wind tunnel test cost is saved.

The invention provides a double-sided rubber yoga mat processing technology which comprises the following steps: S1, respectively preparing an A-side natural rubber coiled material and a B-side natural rubber coiled material: carrying out plasticizing treatment on a natural rubber raw material at the plasticizing temperature of 60-90 DEG C for 10-30 minutes; s2, color master batches are added into the plasticized natural rubber for mixing, color master batches of different colors are adopted for the A face and the B face respectively, and the adding amount of the color master batches accounts for 1-5% of the total weight of the rubber; s3, the mixed rubber sizing material and fine cloth are synchronously fed into a foaming furnace through continuous compounding equipment, foaming forming is conducted at the temperature of 160-200 DEG C, and a coiled material formed by compounding a rubber layer with a porous structure on the surface and the fine cloth is formed; s4, the A-face coiled material and the B-face coiled material are continuously compounded through a hot pressing roller, and the hot pressing temperature is 120-150 DEG C; the problems that a traditional yoga mat is single in double-sided function, low in compounding process efficiency and high in interlayer stripping risk are solved.

The invention discloses a preparation method and application of circumferentially limited supercritical foaming self-packaging TENG, and the preparation method comprises the following steps: uniformly mixing a PDMS precursor and a curing agent, pouring the mixture into a mold, and putting the mold into a vacuum oven for curing to obtain a PDMS film; adhering the PDMS film to the middle position of the PI film through a double-sided nickel conductive adhesive tape, then putting the PDMS film into a mold, putting a thermoplastic elastomer on the upper layer, and performing hot pressing by using a vacuum auxiliary hot press to obtain a prefabricated sample; putting the prefabricated sample into a supercritical foaming reaction kettle, controlling the temperature to 70-130 DEG C, injecting supercritical fluid into the foaming reaction kettle, after the prefabricated sample and the supercritical fluid form a saturated and stable blending system, maintaining for 0.8-1.5 hours, taking out the blended system, and naturally cooling to room temperature, so as to obtain the TENG. The preparation method has the beneficial effects that the self-assembled and self-packaged TENG with the bionic dome structure is successfully prepared through cooperation of a supercritical fluid technology and a limited foaming strategy, and the technical scheme of the self-assembled and self-packaged TENG obtains breakthrough progress in the aspects of the preparation process, the structural design and the environmental adaptability.

The utility model discloses a traction type casing pipe machining all-in-one machine. Comprising a workbench, a sleeve traction assembly used for achieving sleeve feeding and keeping a sleeve in a linear state, a laser lettering and marking assembly used for achieving sleeve marking and lettering, a hot-pressing assembly used for achieving tooth hot-pressing at the two ends of the sleeve, a cutting assembly used for cutting off the sleeve and a clamping traction assembly used for achieving sleeve moving. The sleeve traction assembly, the laser printing and marking assembly, the hot pressing assembly, the cutting assembly and the clamping traction assembly are all arranged on the workbench, and the laser printing and marking assembly, the hot pressing assembly, the cutting assembly and the clamping traction assembly are sequentially arranged from left to right. The workbench is further provided with a cutting clamping assembly used for clamping the sleeve during cutting and a cutting tightening feeding assembly used for enabling the sleeve to be in a tightening state during cutting, the equipment can directly complete the working procedures of sleeve cutting, hot pressing, lettering and marking of the sleeve, and compared with the prior art, the cost can be reduced, and the efficiency can be improved.

The invention discloses a coating and hot-pressing process of a PHA material, and belongs to the field of packaging material coating. The process comprises the following steps: tightly combining a molten PHA coating material with a base material through hot pressing; the PHA coating is further compacted through a hot press polish roller, and bubbles between the PHA coating and the base material are eliminated; then entering a cooling device, rapidly cooling through internal water circulation so as to cure the PHA coating, and meanwhile, spraying a trace amount of deionized water mist so as to prevent the base material from being dried and embrittled due to high temperature; entering a recrystallization zone, regulating and controlling the crystallinity of PHA, and balancing the mechanical property and degradation rate. The PHA can be well bonded with various base materials (such as paper, fabrics and films) in the hot pressing process, and an additional adhesive is not needed. Therefore, the technological process is simplified, and the cost is reduced. And the PHA can be uniformly coated on the surface of the base material through the hot pressing process to form a compact coating, so that the performance consistency of the product is ensured.

A deformable hot-press 3D printing device, characterized by its use for 3D printing, comprises a roller module, a fiber placement module, and at least one nozzle; the fiber placement module is used to lay down a reinforcement material; the at least one nozzle evenly sprays a base material onto the reinforcement material; the roller module includes a deformable unit, whose deformation and temperature are controlled by a computing unit to compress the composite material formed by the nozzle and the fiber placement module into various shapes. This invention addresses the problems of prior art in being unable to print concave and convex surfaces, control product surface shape, and achieve printing of thermosetting composite materials.

The invention relates to the technical field of composite material stringer forming, and particularly discloses a composite material stringer forming mold and method.The composite material stringer forming mold comprises a mold pressing machine, a jacking cavity, a clamping cavity, a positioning mechanism, a mold pressing mechanism and a jacking mechanism, and the jacking cavity is formed in the bottom end of an inner cavity of the mold pressing machine; clamping cavities communicated with an inner cavity of the molding press are formed in the left side and the right side of the molding press, the positioning mechanisms are arranged in inner cavities of the clamping cavities, the molding mechanism is arranged at the top end of the inner cavity of the molding press, and the jacking mechanism is arranged in an inner cavity of the jacking cavity. The device can effectively overcome the defects of edge fiber distortion and interlayer slippage caused by resin flow and thermal expansion coefficient difference in the prior art, can ensure that the prepreg is kept at a design angle when being laid, can timely identify and adjust an abnormal stress state during demolding, greatly reduces the rejection rate, and improves the production efficiency. The mold system can realize accurate control of the hot press molding process and safety protection of the demolding process, and has remarkable economic benefits and application values.

The present disclosure discloses a speaker box including a cover fixed between the frame and the magnetic circuit system; the cover includes a bottom wall set at a bottom of the speaker unit and a side wall extending from the bottom wall and set at a side of the speaker unit; the vibration system, the frame, the cover and the magnetic circuit system enclosing a internal space of the speaker unit; the cover is hot pressed from polyethylene glycol terephthalate film, the bottom wall is provided with an array of first leakage holes communicating the internal space and the rear cavity, the side wall is provided with an array of second leakage holes communicating the internal space and the rear cavity. The speaker box can be flexibly applied to a variety of complex shapes of the housing and can enhance the filling amount of sound-absorbing powder.

The invention provides a textured glass panel based on surface hot-pressing film forming and a preparation method thereof, and belongs to the field of textured glass panels, an adhesive film layer mainly plays a role in connecting a glass substrate and an outer film layer, and the outer film layer is used for isolating a pattern mold from the adhesive film layer and preventing the pattern mold from being adhered to the adhesive film layer after vacuum hot-pressing, so that the texture glass panel is formed. Meanwhile, the film can be used as an appearance protective film of a glass panel; the textured glass panel based on surface hot-pressing film molding, which has a clear texture structure on the surface, and is stable in consistency and good in overall performance and texture aesthetic property, is prepared through an integral molding process by selecting appropriate types of outer film layers and adhesive film layers and matching with parameter setting of a vacuum hot-pressing process. Compared with the traditional process of attaching the finished pattern film to the glass, the textured glass panel disclosed by the invention is simple in preparation process, free of glue, environment-friendly, low in product cost and more beneficial to industrial continuous production.

The utility model discloses a wood hot press which comprises a hot press body, the hot press body comprises a hydraulic lifting assembly, a heating plate and a base, a lifting column is installed between the hydraulic lifting assembly and the heating plate, the base is installed on the bottom side of the heating plate, a water storage tank is arranged in the heating plate, and a heat conduction plate is installed at one end of the water storage tank. And a heating assembly is mounted in the hydraulic lifting assembly. According to the hot press for the wood, water is arranged in the heating plate and serves as a heat conduction medium, it can be guaranteed that the temperature distribution on the surface of the heating plate is more uniform, the heating uniformity and efficiency of wood processing are remarkably improved, meanwhile, damage to the wood in the pressing process is effectively reduced, and the quality of the wood is improved. And high quality and yield of wood processing are ensured.