18 results about "Thin film flow" patented technology

The present application belongs to the technical field of fluid intelligent control of numerical control machine tool, in particular to a numerical control machine tool external throttling monitoring system and control method. The system comprises a main liquid supply pipeline, a plurality of throttle valve units, and an integrated base fixedly connected with the inlet of the main liquid supply pipeline. The inside of each throttle valve unit is uniformly distributed with a thin film flow sensing sheet, and the outside is provided with a state indicator lamp for prompting the optimal throttle valve opening position. The method comprises: establishing a unified fluid dynamics and coordinate reference; determining whether the current opening needs to be adjusted based on the flow information and flow field distribution of the in-valve sensing sheet within the effective flow period, and guiding the operator to perform valve position adjustment through the state indicator lamp; and performing reset, recording and conservation strategy at the end of the event to ensure the implementability and reproducibility under different installation attitudes, different machining conditions and environments. The present application realizes adaptive throttling control of the external cooling / lubricating system of the numerical control machine tool, and improves the machining stability and fluid utilization efficiency.

The invention provides a 3D printing device and a 3D printing method of a liquid material. The 3D printing device comprises a rod body with a tip end. The container is provided with a bottom surface, a hole allowing the tip of the rod body to reciprocate is formed in the bottom surface, and the container is further provided with an opening and closing part capable of opening or closing the hole; the container is used for containing a liquid material for 3D printing, and after the hole is in an open state and the tip end of the rod body moves out of the container from the interior of the container through the hole, the contained liquid material penetrates through the hole under the action of gravity and converges to the tip end from the outer wall of the rod body to form a liquid column; a substrate for receiving a liquid column. According to the 3D printing device, the rod body serves as a nozzle, the outer wall of the rod body serves as an outer flow channel, liquid materials flow in a thin film mode in the printing process, high-precision extrusion is achieved, and the problems that materials are difficult to print and blocked are solved.

The invention discloses a plastic film casting forming machine which comprises a working table, a plastic extrusion forming assembly is arranged on the upper surface of the working table, a supporting frame is fixedly connected to the front surface of the working table, a cooling roller and a winding roller are rotationally connected to the inner surface of the supporting frame, and the winding roller is located below the plastic extrusion forming assembly. Two main sliding rails are fixedly connected to the upper surface of the supporting frame, sliding blocks are slidably connected to the interiors of the two main sliding rails, a tension adjusting roller is rotationally connected between the two sliding blocks, a tension self-adaptive adjusting assembly is arranged on the supporting frame, and the tension self-adaptive adjusting assembly is used for controlling the height of the tension adjusting roller. Stable initial tension is provided for the film to ensure regular winding, dynamic balance can be maintained through self-adaptive adjustment when the tension changes, instantaneous tension impact can be buffered, and loosening, wrinkling, tensile deformation or breakage of the film are avoided.

This utility model discloses a wood-plastic composite molding equipment, belonging to the field of wood-plastic composite processing technology. It includes a single-screw main extruder, a single-screw co-extruder A, a single-screw co-extruder B, and a die. The output end of the single-screw main extruder is fixedly connected to the die, the output end of the single-screw co-extruder A is fixedly connected to the die, and the output end of the single-screw co-extruder B is fixedly connected to the die. A main flow channel is provided inside the die, and the output end of the single-screw main extruder communicates with the main flow channel. A film flow channel is also provided inside the die. In this utility model, the single-screw main extruder extrudes recycled wood-plastic composite material, which enters the main flow channel to form the wood-plastic composite body. The single-screw co-extruder B extrudes AS+glass fiber reinforced material, which enters the core material flow channel to form the wood-plastic composite core. The single-screw co-extruder A extrudes ASA, which enters the film flow channel and adheres to the outermost layer of the wood-plastic composite.

The application relates to the field of film casting technology, in particular to a casting cooling device, which comprises a support, a control box is installed on the support, and further comprises: a first cooling roller, which is arranged on the support, and a transmission assembly is installed on the support at a position corresponding to the end of the first cooling roller; a second cooling roller, which is arranged on the support at a position corresponding to one side of the first cooling roller, and an adjusting roller is elastically arranged on the support between the first cooling roller and the second cooling roller; a filtering assembly is arranged in communication with the adjusting roller; the cast film is wound from the first cooling roller to the adjusting roller, and then wound from the adjusting roller to the second cooling roller for cooling; during the cooling process, the cast film between the first cooling roller and the second cooling roller is in a taut state through cooperation of the adjusting roller, the first reset spring and the mounting frame, the thickness uniformity of the cast film is ensured, and transverse wrinkles and edge warping do not occur.

The invention provides a method and process for extracting total asiaticoside from centella asiatica, and relates to the technical field of organic chemical agent manufacturing, and the extraction method comprises the following steps: pretreating and crushing raw materials; performing water reflux extraction; adsorbing and purifying by using macroporous resin; carrying out alcohol precipitation impurity removal and concentration, controlling the evaporation temperature and the vacuum degree in the concentration process to adjust the feeding flow rate, so that the liquid medicine uniformly forms a film, and concentrating until the specific gravity of the liquid medicine is 1.2 to obtain thick paste; and closing the heating system after concentration is finished. According to the invention, the heat loss rate of asiaticoside can be reduced, the output is increased, and the circulation rate is increased through a condensation recovery system, so that the consumable cost and the equipment cost are effectively reduced, efficient and mild material treatment is realized through a falling film evaporation technology, and by utilizing the synergistic effect of film flow and vacuum low temperature, the product quality is improved. And the solvent is quickly removed within an extremely short heating time, so that the heat-sensitive asiaticoside is protected from being degraded and discolored to the greatest extent.

The utility model relates to the technical field of trimming mechanisms, and provides a trimming mechanism of a plastic film casting machine, which comprises a cutting knife, a bottom plate, a support frame, a moving component, a connecting rod, an adjusting ring, a rotating component and a conveying component, the bottom plate is provided with a cutting groove and a plurality of sliding grooves, the support frame is fixedly arranged on the bottom plate, the moving component is arranged on the support frame, and the connecting rod is arranged on the rotating component. The moving assembly is arranged on the bottom plate and used for driving the cutting knife to move, the two connecting rods are arranged on the moving assembly, the adjusting ring is fixedly installed between the two connecting rods, the rotating assembly is arranged on the adjusting ring and used for rotating the cutting knife, and the conveying assembly is arranged on the bottom plate and used for conveying the plastic film. By means of the technical scheme, the problem that in the prior art, when edge cutting treatment is conducted on the thin film, the cutting direction of a cutting knife is fixed, and therefore cutting of the thin film has certain limitation is solved.

The utility model relates to an assembly tool for a TPU (thermoplastic polyurethane) film tape casting filter. The filter comprises a filter base, a central rod body and a filter sieve plate, wherein the central rod body is vertically arranged at the central position of the filter base, and the filter sieve plate is nested on the central rod body; the pressing device is characterized by comprising a pressing rack, an assembly frame and a filter pressing cover, according to the utility model, on one hand, the pressing cylinder is matched with the assembly frame to tightly press the filter sieve plate nested on the central rod body, so that the labor is saved, and the operation is convenient; on the other hand, the filter pressing cover structure is arranged to ensure that the molded surface of the filter pressing cover is attached to the top surface of the filter sieve plate, so that the stability in the pressing process is ensured; the adopted assembly frame structure can be matched with the pressing cylinder to adjust the overall stroke, the pressing effect of the filter screen plate is guaranteed, the assembly frame structure can be rapidly matched with a filter pressing cover in a positioning mode, the pressing efficiency of the filter screen plate is higher, and compactness is better.

The utility model discloses a forming equipment of netted TPU leather, including frame, unreeling device, cooling device, take-up device, TPU film casting extruder, cutting device and distributing device, take-up device has reeling roller, unreeling device has screen cloth film placing roller, PP paper placing roller and unreeling frame, cooling device has two cooling roller, and the TPU film casting extruder has two cooling roller. A cooling forming space is formed between the two cooling rollers, the cooling device is mounted on the rack in a manner of adjusting the size of the cooling forming space, and the output end of the TPU film casting extruder falls above the cooling forming space; the cutting device is located between the cooling device and the winding device and provided with a material passing roller, and cutting knives are arranged above the two ends of the material passing roller in the axial direction. The material distributing device is located between the cutting device and the winding device and provided with a plurality of material distributing roller sets, each material distributing roller set is provided with a separating roller and two clamping rollers, and the separating roller is located above the two clamping rollers. Compared with the prior art, the surface of the product is smoother, and forming is simpler.

The application relates to a plastic film casting production device and relates to the technical field of film production. The device comprises an extruder, a cooling mechanism and a winding mechanism arranged in sequence along the horizontal direction. The cooling mechanism comprises a rack, a cooling motor, a cooling roller and a casting machine. The cooling roller is rotationally connected to the rack and is located below the outlet of the extrusion die head of the extruder. The cooling motor is arranged on the side wall of the rack, and the output end of the cooling motor is connected to the cooling roller. The casting machine is arranged on the rack. The side wall of the extruder is provided with an air extraction pump. The air extraction end of the air extraction pump is connected with a negative pressure box. The negative pressure box is arranged on the side wall of the extruder. One side of the negative pressure box close to the cooling roller is provided with a bellows. One end of the bellows away from the negative pressure box is provided with an air extraction pipe. One end of the air extraction pipe away from the bellows is provided with a connecting plate. The connecting plate is located above the cooling roller. The side wall of the connecting plate is uniformly provided with a plurality of air extraction holes. The application has the effect of improving the production efficiency of the plastic film casting production device.

The utility model belongs to film processing technical field, concretely relates to a kind of high flatness's film casting machine quick cooling device, including support plate, the support plate upside is equipped with height adjusting mechanism, the height adjusting mechanism upside is equipped with support frame, the front and back sides of the support frame are equipped with mounting plate, two the mounting plate from right to left respectively drive assembly are equipped with forming roll and cooling roll, the forming roll outer surface has embossing, the forming roll and cooling roll are both equipped with water cavity, the both sides of the forming roll and cooling roll are equipped with the hollow rotating shaft of mounting plate rotation connection, the hollow rotating shaft is all rotation sealed connection with water pipe, the water pipe of the forming roll and cooling roll two ends is used for water inlet and drainage respectively, by hollow rotating shaft respectively inject hot water and cold water into forming roll and cooling roll, forming roll pass hot water realizes film hot embossing, cooling roll pass cold water rapid cooling, hot forming and cooling are completed synchronously, processing efficiency is high, significantly improve film flatness.

The invention relates to a perovskite thin film crystallization device which comprises a lifting assembly and an air knife arranged at the lifting end of the lifting assembly, the air knife comprises an air pipe and an air knife body which are communicated with each other, the air pipe is provided with an air inlet and an air outlet, and the air knife body is communicated with the air outlet; an air guide hole is formed in the lower side wall, close to the thin film, of the air knife body, so that when the air knife body is located above a base plate loaded with the thin film, the part, sprayed to the thin film, of airflow flowing between the air knife body and the thin film, of the air knife body is guided out to the outer side of the air knife body through the air guide hole. According to the perovskite thin film crystallization device, by optimizing the structure of the air knife jet orifice, the turbulence phenomenon near the jet orifice of the air knife body is reduced, the influence of gas on the thickness of an uncrystallized and formed thin film can be reduced, and it is guaranteed that the crystallization forming thickness of the thin film is uniform and compact.

The utility model relates to the technical field of winding devices of casting machines, in particular to a winding device of a film casting machine of a chip component, which comprises a base, a rack is arranged at the top end of the base, a lifting component is arranged in an inner cavity of the rack, a cleaning plate is arranged at the bottom end of the lifting component, and a sliding rod is arranged at the top end of the cleaning plate. A sliding rod is arranged on the base, the sliding rod is inserted into the rack in a sliding mode, a first motor is arranged at the left end of the rack, the output end of the first motor extends into an inner cavity of the rack and is rotationally connected to the rear side of the inner cavity of the rack through a bearing, the output end of the first motor is fixedly connected with a winding roller in a sleeving mode, and a support is arranged at the top end of the base. The winding device solves the problems that in the prior art, a winding device of a casting machine cannot clean the winding roller in the actual use process, so that impurities are attached to the periphery of the outer wall of the winding roller, a film is damaged, a cutting structure is not arranged, and workers need to cut the film manually.

The application relates to the technical field of automatic production lines, and provides a casting head and a film casting machine. The casting head comprises a lower die head with a casting cavity, an upper die head arranged on the lower die head, and side connecting plates connected to the left and right sides of the upper die head and the lower die head respectively. The upper die head extends forward along the length direction to form an upper lip part. The lower die head extends forward along the length direction to form a lower lip part. The upper lip part and the lower lip part form a slit outlet communicated with the casting cavity after being enclosed by the upper die head and the lower die head. The front end surface of the upper lip part is an arc surface, and the front end surface of the lower lip part is an inclined plane. In the application, the position of the casting head is adjusted during coating by using the casting head, so that different positions of the arc surface of the upper lip part are opposite to the base tape. In this way, the distance between the slit outlet and the base tape is adjusted, and the thickness of the coating is adjusted. The structure is improved simply, and is not limited by material and process, so that the adjustment is more convenient.

The utility model relates to the technical field of casting film cooling, and discloses a CPP casting film casting cooling mechanism which comprises a base, a support is installed on the base, a cooling roller shell is arranged on the support, a rotating shaft is installed at one end of the cooling roller shell, and a rotating pipe is installed at the other end of the cooling roller shell. Cooling fins are installed on the inner wall of the cooling roller shell, a cooling fan is arranged on the side, facing the rotating pipe, of the cooling fins, balls are installed on the outer wall of the cooling fan, a fixing pipe is installed on the side, facing the rotating pipe, of the cooling fan, and a fixing arm is arranged on one side of the support. When the cooling fan is started, the cooling fins in the cooling roller shells can be cooled, so that the effect of cooling a film passing through the space between the two sets of cooling roller shells is achieved, the cooling mechanism cools the film in an air cooling mode, and waste of water resources is avoided.

The present application belongs to the technical field of polymer measurement and analysis, and particularly relates to a method for measuring and analyzing the rheological behavior of a nano-polymer film. The method comprises the following steps: heating a polymer film to a temperature T and keeping the temperature; placing a liquid drop on the surface of the polymer film at the temperature T and keeping the temperature for a time t; cooling the polymer film with the liquid drop and removing the liquid drop; measuring the height h of the convex deformation of the polymer surface under the action of the liquid drop; changing the time t of placing the liquid drop on the surface of the polymer film; measuring the height h of the convex deformation of the polymer film surface formed under different placing times and temperatures; and transforming the equivalent h(t)~t relationship to obtain the change of the storage modulus and the loss modulus of the polymer film with frequency, i.e. the linear viscoelastic spectrum of the polymer film. The present application can accurately determine the frequency dependence of the storage modulus and the loss modulus of the nano-polymer film, and realize the analysis of the linear rheology and the molecular motion behavior of the film.