490results about How to "Avoid quality problems" patented technology

The invention relates to the technical field of temperature control, in particular to a traditional Chinese medicine raw material extraction process temperature control system and method.The system comprises a real-time environment monitoring module, a temperature prediction adjusting module, an abnormal temperature analysis module and a temperature control optimization response module; collecting a temperature signal of the traditional Chinese medicine raw material extraction equipment, and recording the humidity change of the extraction environment. According to the invention, through real-time acquisition and analysis of temperature and humidity data, the precision and the reaction speed of temperature regulation are further improved, so that even tiny temperature fluctuation can be detected and brought into regulation, through temperature prediction, the system can effectively predict the future temperature change trend, and through the combination of the prediction capability and the instant reaction, the real-time performance of the system is improved. The temperature in the extraction process is maintained in the optimal state, the extraction rate and quality of effective components are greatly optimized, and due to timely recognition and regulation of abnormal temperature points, potential quality problems are prevented, and energy consumption is reduced.

The invention relates to the technical field of welding devices, and discloses a welding device and method for metal steel structure machining, the welding device comprises a supporting table, a supporting frame is fixedly connected to the top of the supporting table, and a welding machine is arranged at the bottom of the supporting frame; the welding device comprises a supporting table, a clamping device is arranged at the top of the supporting table, a protective device is arranged at the top of the clamping device, and a collecting device is arranged at the bottom of the supporting table. And meanwhile, a third spring moves to drive a clamping plate to move, so that secondary clamping can be conducted on the side face of the welding part, the clamping effect is further enhanced, the stability of the welding part in the welding process is improved, and deviation of the welding position is avoided.

The invention discloses intelligent low-clearance cast-in-place pile construction equipment, system and method. The construction site scanning and model building, paying-off and point position projection and correction, automatic construction path planning, drilling positioning, preparation work before drilling (burying of a soil layer structure integrity evaluation sensor), drilling construction and accurate control of perpendicularity and drilling depth, drilling lifting and in-hole environment detection are sequentially completed. And therefore, the intelligent construction operation of the cast-in-place pile is completed, the equipment has the construction characteristics of miniaturization and large drilling depth, and the intelligent construction operation under the low clearance working condition is perfectly achieved.

The invention provides an AI-driven photocuring 3D printing fault prediction method, and relates to the technical field of 3D printing, and the method comprises the steps: collecting printing parameters in real time based on a sensor installed on photocuring 3D printing equipment, and carrying out data preprocessing; multi-dimensional features of photocuring 3D printing are extracted, time sequence features and spatial features are analyzed, and high-dimensional feature vectors of photocuring 3D printing are obtained; marking the collected historical printing data as a normal data sample and a fault data sample, and training and optimizing the constructed fault prediction model in combination with the high-dimensional feature vector; printing parameters collected in real time are detected based on the trained fault prediction model, an obtained prediction result is compared with a preset early warning threshold value, and if the prediction result exceeds the threshold value, early warning is given out according to a fault grading result. By monitoring and analyzing key parameters in the printing process in real time, potential faults are predicted, automatic adjustment is carried out when abnormity occurs, and the reliability of the printing process and the product quality are improved.

The invention discloses a wafer film defect detection system and method, and relates to the technical field of wafer film defect detection.The wafer film defect detection method comprises the following steps that in the wafer film defect detection process, laser beams are emitted through a laser scanner according to the preset light beam coverage rate, and the surface of a wafer is covered for preliminary scanning; in the laser beam scanning process, the intensity and the consistency of laser reflection signals are analyzed in real time. According to the invention, preliminary scanning is carried out by presetting the light beam coverage rate, the significance of the potential flaw area is evaluated by using the convolutional neural network, accurate classification of the flaw obvious area and the flaw non-obvious area is realized, high-density secondary scanning is carried out by dynamically adjusting the light beam coverage rate for the flaw non-obvious area, and finer surface information is captured. The detection efficiency is improved, the risks of missing detection and false detection are effectively reduced, the accurate detection of tiny flaws is ensured, the quality control of wafer film pasting is remarkably improved, and the production loss is avoided.

The invention relates to the technical field of rolling of road rollers, in particular to an identification method and system for a rolling operation track of a road roller. The method comprises the following steps: acquiring a target rolling area; performing geographic space data acquisition on the target rolling area to obtain geographic environment data of the operation area; positioning the road roller to obtain position coordinates of the road roller; sensing the working environment of the road roller in real time to obtain a working environment three-dimensional model; performing topographic feature recognition on the three-dimensional model of the working environment to obtain environmental topographic feature mapping data; performing geographic topology analysis on the target rolling area based on the environmental topographic feature mapping data to obtain an operation area topology model; and carrying out matching analysis on the position coordinates of the road roller and the working area topology model to obtain a road roller working path candidate set. According to the invention, the workload that an operator needs to frequently stop to check and adjust the position of the road roller is reduced, so that the operation process is smoother.

The invention discloses a tobacco shred boxing system and method, and relates to the technical field of tobacco production equipment. The tobacco shred boxing system comprises a tobacco box conveying line composed of a plurality of conveyors, a boxing station A and a boxing station B, wherein the boxing station A and the boxing station B are arranged on the tobacco box conveying line. A closed transverse tobacco shred conveyor is arranged between the boxing station A and the boxing station B. The middle of the closed transverse tobacco shred conveyor is connected with a closed longitudinal tobacco shred conveyor. The boxing station A and the boxing station B are each provided with an equipment outer frame and an equipment inner frame. A feeding hopper connected with the transverse tobacco shred conveyor, a sleeve box lifting mechanism located at an outlet of the feeding hopper, capable of vertically moving and connected with the tobacco box and the tobacco box located in the equipment inner frame and located on the tobacco box conveying line are sequentially installed on the equipment inner frame from top to bottom. The tobacco shred boxing system is used for automatic boxing of tobacco shreds, metering is accurate, dust raising and dust overflowing are effectively prevented, the structure is simple, boxing efficiency is high, and the boxing process is full-automatic.

The utility model provides a pile foundation concrete pouring over-pouring height measuring device which comprises an installation frame, a winding drum mechanism arranged on the installation frame, a coil spring arranged in the winding drum mechanism, a measuring rope with one end fixed and wound on the winding drum mechanism and a fixing piece connected with a reinforcement cage. The fixed part is arranged on the mounting frame, the floating ball mechanism is movably connected to the fixed part and connected with the other end of the measuring rope, the ratchet wheel is fixedly connected to the winding drum mechanism, and the alarm mechanism is arranged on the mounting frame and used for being matched with the ratchet wheel. The pile hole concrete surface ascends to push the floating ball mechanism to ascend, and then under the action of the coil spring, the winding drum measuring rope is driven to be shortened, the winding drum mechanism and the ratchet wheel are driven to rotate, so that the alarm mechanism matched with the ratchet wheel sends out a signal to remind constructors of the concrete pouring condition, and accurate control over the over-pouring height is achieved. Tediousness and uncertainty of manual judgment are avoided, and construction efficiency and construction quality of the pile foundation are effectively improved.

The invention relates to the technical field of five-axis hybrid robot error compensation, in particular to a five-axis hybrid robot tail end pose error compensation method and system. The method comprises the following steps: acquiring vehicle body welding demand data and analyzing the welding strength difference between welding spots; thirdly, the theoretical contact strength of the manipulator is matched according to the welding strength difference data, the heat conduction toughness loss of adjacent welding spots is simulated, and the toughness influence gradient of the heat chain reaction is further recognized; then, carrying out regional gridding processing on the toughness influence gradient data, regulating and controlling the contact force of the manipulator, and learning a tail end pose error compensation strategy; and finally, designing automatic firmware based on the compensation strategy, and embedding the automatic firmware into the bottom layer of the robot to ensure that the tail end pose error is accurately compensated. According to the method, the error compensation technology of the five-axis hybrid robot is optimized, so that the error compensation technology of the five-axis hybrid robot is more perfect.

The invention discloses a lithium hexafluorophosphate production control system and a method thereof, and relates to the technical field of lithium hexafluorophosphate production, and the method specifically comprises the following steps: obtaining crystallization dynamic information of each area in a reaction kettle in a lithium hexafluorophosphate crystallization process in real time, and analyzing after obtaining to obtain a crystallization dynamic result; respectively generating a crystal growth driving force coefficient and a particle uniform distribution index of each region; constructing a particle size distribution evaluation model for the generated crystal growth driving force coefficient and particle uniform distribution index of each region, generating a particle size distribution coefficient of each region, and performing comprehensive analysis after generation to generate an evaluation coefficient; and analyzing the generated evaluation coefficient, and evaluating the uniformity degree of particle size distribution in the reaction kettle in the lithium hexafluorophosphate crystallization process. The problem of uneven particle size distribution in the lithium hexafluorophosphate crystallization process is solved, and the effect of improving the particle size uniformity and the product quality stability is achieved.

According to the high-precision tension control system for the solar cell backboard coating line, high-precision tension control is achieved based on an SINAMICS 120 servo dragging system, a Siemens S7-300 series PLC is adopted as a control core, a PROFIBUS-DP field bus communication network is established, CPU317-2DP serves as a master station, a field remote IO module and a CU320 driving unit serve as slave stations, and the high-precision tension control system for the solar cell backboard coating line achieves high-precision tension control. An industrial personal computer is used as a man-machine interaction medium, normal operation of the whole production line is achieved by setting tension and production speed, tension control is performed in a mode of combining a floating roller and a high-sensitivity tension sensor, a high-precision servo system S120 is used for dragging, high-precision control of tension is achieved, and actual operation of the system shows that the production efficiency is greatly improved. Compared with a traditional tension control system, the system has the advantages of being stable in tension control, high in precision, stable in production speed, friendly in man-machine, capable of achieving non-stop roll changing and capable of completely meeting the requirement for continuous production of the back plate.

The invention relates to the technical field of quality detection, in particular to a meat dish quality detection system which comprises a data acquisition module, a first determination module, a second determination module, a judgment module, a correction module and an alarm sending module. According to the method, the quality control level of the meat ball production line is effectively improved through accurate multi-parameter analysis and a step-by-step judgment mechanism, potential quality problems such as cracks, over-wet or over-dry defects can be accurately recognized by monitoring the moisture content, the sphericity and the deformation quantity of the meat balls in real time, the clamping pressure is dynamically adjusted, and the quality of the meat balls is improved. The system can adapt to different production conditions in real time, the influence of too large or too small clamping force on the shape and taste of meatballs is avoided, a real-time feedback mechanism of the correction module ensures that the production process can be rapidly adjusted during fluctuation, the defective rate in production is effectively reduced, and the production efficiency is improved. The problems of low detection precision and slow response speed caused by dependence on static data are effectively solved.

The invention discloses an automobile part grinding control system, which relates to the technical field of automobile part grinding control, and ensures that a grinding tool always keeps an optimal focal length and an accurate position in an operation process by accurately controlling a first focusing instruction, a first translation instruction and a first rotation instruction. A strain sensor is introduced to monitor the deformation of the workpiece in real time, and the deformation can be found in time and compensated in real time in the grinding process. The system can optimize temperature control management for different workpiece materials by considering heat conductivity coefficients k and heat conduction factors Rczz of different materials. Multiple factors of stress distribution, heat conduction, cooling efficiency and surface smoothness are considered by integrating the grinding quality index Mzqs, the machining quality grade is generated after comprehensive evaluation is provided for the grinding quality, parameters including the grinding depth, the workpiece feeding speed and the cooling system are adjusted according to the grade result, and therefore the machining quality of the final workpiece is improved.

The invention relates to the technical field of transfer devices, and discloses a transformer insulation paper production transfer device which comprises a table, a conveying table is arranged at the top of the table, and a protection plate is fixedly connected to the top of the table. The rotating shaft rotates to drive the compression roller to rotate, so that the insulation paper which just rotates out of the rolling barrel can be leveled, the situation that the insulation paper is wrinkled and unsmooth in the transportation process in the subsequent production process is avoided, deflection or clamping stagnation of the insulation paper caused by unevenness of the insulation paper is emphatically reduced, the subsequent processing precision is improved, and the production efficiency is improved. And meanwhile, the first connecting plate moves upwards to drive the pressing plate to move upwards, so that the surface of the insulation paper can be further flattened, the flatness of the insulation paper in the transfer process can be improved, and the problem that the production efficiency is reduced due to uneven cutting in the follow-up link is solved.

The invention relates to the technical field of intelligent monitoring, and more specifically discloses an intelligent monitoring system and method for a circuit board electroplating production line, and the method comprises the steps: obtaining a current signal, temperature data and humidity data, extracting a corresponding feature vector and a feature matrix, constructing a circuit board electroplating key parameter feature vector, and then carrying out the calculation of a current signal, temperature data and humidity data; and analyzing the key parameter feature vectors of the circuit board electroplating by using a classifier to obtain a classification result which is used for representing whether the circuit board electroplating production process is abnormal or not. The intelligent monitoring system can monitor key parameters in the electroplating process in real time, carry out anomaly detection and early warning, help to prevent production line faults and quality problems, and improve the stability and reliability of a production line.

The invention relates to an electric cabinet metal plate milling device which comprises a machine tool and a vacuum adsorption carrying table assembly of the machine tool. The assembly comprises an adsorption platform deck, a base and an integrated valve terminal, a negative pressure through hole in the adsorption platform deck is divided into a negative pressure concentration area and a central adsorption area, the bottom is connected with the integrated valve terminal through a pipe joint, and a proximity sensor is arranged on the outer side. Suction force of different areas is subjected to partition management through the integrated valve terminal, and the adsorption force can be dynamically adjusted according to the position of the milling cutter. When the milling cutter approaches, the valve opening degree of the corresponding area is adjusted through the integrated valve terminal, reasonable distribution of suction force is achieved, and the suction requirement of the milling cutter during machining at different positions of a thin plate can be met even if the total suction force is constant. In addition, a chip blowing mechanism is further arranged, chips can be blown away, false alarm of the sensor is prevented, machining reliability and efficiency are ensured, and the milling quality of the electric cabinet thin plate with the thickness being 1 mm is improved.

The invention discloses a generator rotor paint spraying supporting tool which is characterized in that two parallel sliding rails are arranged on the surface of a machine base, and a rack is arranged on one sliding rail; the support frame is arranged on a slide rail of the base left and right; one end of the jacking screw rod is screwed into the top of the supporting piece, the other end of the jacking screw rod is fixedly connected with the bottom of the jacking supporting block, and the jacking supporting block moves up and down relative to the supporting frame through the jacking screw rod. Two supporting wheels are arranged on the supporting frame on one side and are used for supporting a generator rotor; the base is arranged on a sliding rail of the machine base between the two supporting frames and can move along the sliding rail. The telescopic supporting assembly is vertically arranged on the base, and the base of the telescopic supporting assembly is fixed to the top face of the base. The supporting piece is arranged at the top of the telescopic end of the telescopic supporting assembly and moves up and down along with stretching of the telescopic supporting assembly. The supporting piece is higher than the supporting wheel at the highest position. In the descending process of the generator rotor, the risk that the generator rotor accidentally falls off is avoided, and the generator rotor can be prevented from rotating and colliding in the descending process.

The utility model belongs to the technical field of laminated busbar production, and relates to a laminated busbar V-shaped local hot-pressing repairing device which comprises a heat conduction unit and an electric soldering iron matched with the heat conduction unit for use, the heat conduction unit comprises an upper die, a lower die and two G-shaped clamps, and the two G-shaped clamps are arranged at the two ends of the upper die respectively. A V-shaped groove for placing a V-shaped laminated busbar is formed in the upper end face of the lower mold, the cross section of the upper mold is triangular, the upper mold is conveniently embedded into the V-shaped groove, the G-shaped clamp comprises a clamping block and a fastening screw rod connected with the clamping block, a butt-joint hole for the fastening screw rod to penetrate through is formed in the upper end face of the clamping block, and a thread matched with the fastening screw rod is formed in the butt-joint hole; compared with the prior art, local repairing work is completed under the condition that overall heavy hot pressing is not needed, energy consumption is greatly saved, repairing efficiency is improved, original defective products are converted into qualified products, and therefore the production cost of enterprises is remarkably reduced.

The invention relates to the technical field of pressure leakage stoppage of pressure-bearing equipment, and particularly provides a pressure leakage stoppage clamp for a pressure-bearing equipment flange and a preparation method of the pressure leakage stoppage clamp, and the pressure leakage stoppage clamp comprises a first clamp and a second clamp which are detachably connected to a flange plate gap and a cylindrical surface and are of an integrally-formed elastic deformation structure; each of the first fixture and the second fixture comprises a fixture body, a fixture boss and a fixture bevel edge, and when the first fixture and the second fixture are mounted and fastened on the flange, the fixture bevel edges are stressed to elastically expand and deform, form circumferential interference contact with the cylindrical surface and generate axial component force to act on the side surface of the flange; the boss is tightly attached to the surface of the flange plate gap in the direction of the flange plate gap through the generated counter-acting force, and the boss of the clamp and the side surface of the flange plate gap are in installation interference fit, so that the flange plate gap is sealed, and a sealed cavity is formed; and then glue is injected to realize pressure sealing of the flange of the pressure-bearing equipment.

The invention discloses a textile intelligent warehouse management system and method based on cloud computing, and relates to the technical field of inventory management, and the textile intelligent warehouse management system based on cloud computing comprises a warehouse monitoring area division module, a warehouse textile storage monitoring module, a monitoring data analysis module, and a textile warehouse management module. According to the invention, the fine management layout of the warehouse space can be realized, the storage state and quality level of each area can be clearly quantified, the abnormal warehouse sub-areas can be accurately screened out according to the monitoring characterization value and timely risk early warning management can be carried out, and the in-service sensing devices of each warehouse sub-area can be intelligently managed and adjusted, so that the management efficiency is improved. Accuracy and timeliness of data acquisition are guaranteed, and scientificity and intelligent level of textile warehouse management are improved.

The invention relates to the technical field of LED semiconductor manufacturing, solves the problem that in the prior art, quality and consistency cannot be kept in the packaging and storage process of finished LED semiconductors, and provides an LED semiconductor production data tracing analysis method and system. The method comprises the steps that according to a unique identifier of a finished LED semiconductor, a taping scheme is obtained, and the taping scheme comprises a taping mode and a taping position; the finished LED semiconductor is subjected to braiding treatment according to the braiding scheme, and an LED light bar is obtained; the LED light bar is subjected to quality detection, a quality detection result is obtained, and quality detection comprises optical detection, electrical detection and mechanical detection; generating a unique identifier corresponding to the LED light bar passing the quality detection; and according to the unique identifier and the corresponding quality inspection result, carrying out warehousing processing on the LED light bar to obtain an LED product. The quality and the consistency can be kept in the packaging and storing process of finished LED semiconductors.

The utility model discloses an air cylinder adjustable stroke control circuit based on a PLC. The air cylinder adjustable stroke control circuit comprises a stop button, a start button, a magnetic sensor, a programmable controller, a first reversing valve, a second reversing valve and a first air cylinder. The control circuit has the advantages that the cylinder piston rod is controlled to stretch out and draw back in a short stroke when equipment runs, the cylinder piston rod retracts in a full stroke when the equipment stops, a mold at the front end of the cylinder piston rod is convenient to disassemble and adjust, the time required for disassembling and adjusting the mold is shortened, and the cylinder is controlled to work in a short stroke in the production process; the time required for stretching and retracting of the piston rod of the air cylinder during working is shortened, the production efficiency of equipment is improved, the air cylinder consumes less compressed air when working in a short stroke, and an air source can be saved.

The invention discloses a digital twinborn management system and method for a fine chemical engineering nitration process production process, the digital twinborn management system simulates a factory production area to establish a 1: 1 three-dimensional digital map, and a chemical plant area scene is visually presented in a platform, including factors such as buildings, roads, pipelines, dynamic equipment, static equipment, instruments and meters, raw materials and the like; the system comprises a signal acquisition module, a data analysis processing module, a valve and pump adjusting module, a safety early warning module and a network management module. According to the method, information such as actual operation conditions, process parameters and equipment states of a real factory is integrated and matched with the virtual digital model, so that real-time tracking, adjustment and optimization in the aspects of factory flow, equipment operation, process parameters, production capacity, quality monitoring and the like are realized, and the flexible production requirements of fine chemical engineering can be better met.

The invention belongs to the technical field of textile traceability, and particularly relates to a textile traceability method and system based on a block chain, and the method comprises the steps: analyzing the textile data integrity based on a block chain network, judging whether the textile data is complete or not, analyzing the textile traceability access confidence, and judging whether the textile traceability access behavior is credible or not. And analyzing the textile traceability query result, comparing to obtain textile traceability data, analyzing the textile traceability data state, and comparing to obtain a textile traceability data risk point. According to the method, the problems of inaccurate and missing data possibly existing in traditional textile data traceability related information and incomplete judgment of the textile data traceability access verification state are solved, the whole production resume of a product can be restored more accurately, risk points in a supply chain can be found and positioned favorably, and the quality of the product is improved. And a basis is provided for improvement.

The invention relates to the technical field of circuit board preparation, and particularly discloses a single-sided copper-embedded double-sided circuit board with an asymmetric structure and a preparation method thereof, and the method comprises the steps: carrying out the single-sided etching of a double-sided copper-coated core board to form a structure with one surface coated with copper and one surface coated with a rough base material, and precisely processing a copper-embedded region through a routing technology, good clearance fit between the copper block and the FR4 gong vacancy is ensured, so that the phenomenon of glue overflow is avoided, and the flatness of the surface is ensured. Meanwhile, the PI film is introduced in the lamination treatment and the prepreg is reasonably utilized, so that the binding force between the copper block and the core plate is enhanced, the surface copper foil is prevented from being polluted by resin, and the high-quality yield is ensured. In addition, the quality problem that the thin copper foil is wrinkled during conventional pressing is effectively prevented by using the copper core plate.

The invention discloses a safety protection system for a cable guide vehicle of a coke dry quenching elevator, relates to the technical field of guide vehicle safety protection, solves the technical problems that in the prior art, the hidden danger protection efficiency of the guide vehicle cannot be detected, and risk management and control cannot be carried out in time, and particularly relates to a guide vehicle track detection unit. The guide rail detection module is used for carrying out guide rail detection on a cable guide, collecting rail detection information, substituting the rail detection information into a formula to obtain a detection coefficient of a guide rail, and comparing and deducing whether the guide rail detection is abnormal or not according to a coefficient threshold; the guide vehicle running analysis unit is used for analyzing the running process of the guide vehicle, collecting bearing running information and wheel running information, and deducing whether the running analysis of the cable guide vehicle is abnormal or not through information comparison; and the protection detection unit is used for detecting and analyzing safety protection measures of the cable guide vehicle, acquiring peak-to-time ratio information and braking information, and analyzing and deducing whether protection detection of the cable guide vehicle is abnormal or not according to the information.

The present application discloses a liquid lens assembly, a camera module and an electronic device. The liquid lens assembly includes: a liquid anti-shake lens; a liquid focus lens, and the liquid focus lens is stacked and connected with the liquid anti-shake lens. The liquid lens assembly provided in the present application includes a liquid anti-shake lens and a liquid focus lens. Therefore, the liquid lens assembly can realize the anti-shake function through the liquid anti-shake lens and realize the focusing function through the liquid focus lens. That is, for the liquid lens assembly, the anti-shake function and the focusing function are realized by different liquid lenses. This is different from the related art, in which the anti-shake function and the focusing function are realized by the same liquid lens, which can avoid the problems of blurred imaging and poor imaging quality when the liquid lens assembly is used in the camera module.

The invention provides a medical report generation method and device, electronic equipment and a storage medium. Comprising the following steps: acquiring a medical image with annotation information, and preprocessing the medical image; carrying out abnormal region identification on the preprocessed medical image to obtain a segmented image of an abnormal region; generating a standard pathological text based on the segmentation map of the abnormal region, the annotation information and a clinical record knowledge base; and generating a medical report based on the standard pathological text, the segmentation map of the abnormal region and the medical report template. By adopting the technical scheme, the problems of low generation efficiency of the medical report and non-uniform quality of the medical report in the prior art are solved.

The invention relates to the technical field of air bubble film processing, and discloses an environment-friendly plastic hot-press forming device which comprises a forming frame, a plurality of conveying rollers used for guiding films to move are rotationally installed in the forming frame, and a hot-press assembly used for hot-press forming of two layers of films is further installed in the forming frame. The outer side of the hot-pressing assembly is further provided with a guide roller used for guiding the film to be attached to the hot-pressing assembly. The hot-pressing assembly comprises two groups of hot-pressing cylinders which are arranged up and down, the outer sides of the two groups of hot-pressing cylinders are both provided with forming holes for forming the film, a plurality of groups of inner heating layers I and inner heating layers II for heating are also arranged in the hot-pressing cylinders, and the inner heating layers I and the inner heating layers II are used for heating the film and a film bubble forming part respectively. The air bubble film is heated before being formed, and meanwhile, the air bubble forming position is also heated, so that the film is good in deformation capacity, and the air bubble film is prevented from being broken or poor in quality.