4108results about "Presses" patented technology

The invention discloses a control method and system of a servo press, and relates to the field of press control, a force displacement curve is obtained in real time from a current punching period, a key feature vector of the force displacement curve is extracted, the key feature vector is compared with an ideal golden feature vector, and a multi-dimensional deviation vector is obtained. Particularly, a deviation decoupling method based on morphological analysis is introduced, and the total deviation can be accurately decomposed into a thermal drift compensation amount caused by the thermal effect of equipment and a material characteristic compensation coefficient caused by plate performance fluctuation by analyzing translation and zooming differences of a current curve and a gold curve in form. Therefore, independent and accurate compensation can be carried out for a physical source, the problems of information aliasing and compensation failure caused by the fact that disturbance sources cannot be distinguished in the prior art are effectively solved, intelligent and feed-forward type cooperative compensation for the next stamping period is achieved, and long-term stability and high precision of the production process are ensured.

The invention provides a servo press control system and method based on a time-sensitive network, and relates to the technical field of intelligent manufacturing and industrial automation control, and the system comprises a time-sensitive network TSN which is used for providing global time synchronization and deterministic data transmission; a main controller of the multi-axis servo control unit is used for issuing a motion control instruction and a feeding and discharging control instruction through a TSN. A robot controller in the robot feeding and discharging unit is used for driving an industrial robot to execute plate taking and placing operation under the action of the feeding and discharging control instruction. The visual monitoring unit comprises an industrial camera accessed to the TSN and is used for collecting images and transmitting image data to the edge computing node through the TSN; the edge computing node is used for processing the image data to generate a compensation instruction and feeding back the compensation instruction through the TSN; and the upper monitoring system is used for subscribing real-time data published by the edge computing nodes, so that the control range of the servo pressure control system is expanded, and the convenience of data transmission and interaction is improved.

The invention relates to the field of waste plastic recycling, and discloses plastic film recycling equipment which is used for cleaning and recycling broken plastic films. Comprising a cleaning pool, an inclined conveying belt is arranged at the tail end of the cleaning pool, water filtering holes are formed in the conveying belt, and an extrusion component is arranged on the conveying belt; and the fished-out fragments are extruded by the extrusion part, so that the drainage speed of the fragments is accelerated, and the subsequent recovery processing step is ensured to be smoothly carried out. A traditional conveying belt drains water only by means of gravity, and water in wet plastic fragments and between layers is difficult to effectively discharge, so that the water yield is large. The intermittent extrusion action is introduced in the operation cycle of the conveying belt, and the'wet cake 'structure formed by the surface tension of a water film of the wet material is destroyed in the squeezing process, so that the moisture is easier to release, the initial moisture content of the material is greatly reduced, the load of subsequent centrifugal dewatering or hot air drying equipment is effectively reduced, and the energy consumption and the operation cost are remarkably reduced.

The invention relates to the technical field of metal casting and powder metallurgy, in particular to a pressure self-adaption adjusting method and system for multi-material forging and pressing, and the method comprises the steps that 1, forging and pressing equipment and a parameter collecting system are initialized; 2, multi-parameter data in the forging and pressing process are collected in real time; 3, calculating the dynamic deformation resistance of the material based on the real-time parameters; step 4, generating a self-adaptive pressure regulation value according to the dynamic deformation resistance; 5, controlling a pressure executing mechanism to output a target pressure value; and 6, the forging and pressing process is continuously monitored and terminated, the step 2 to the step 5 are repeated until the displacement of the die reaches a preset forging and pressing completion position, the central processing unit sends out a termination signal, the pressure execution mechanism gradually unloads pressure to complete the forging and pressing process, and all parameters and adjustment records are stored for quality analysis. Through accurate pressure control and a closed-loop feedback mechanism, defects caused by too high or too low pressure are avoided, the rejection rate is remarkably reduced, and the qualified rate of products is increased.

The invention discloses a control system and method of an intelligent servo press, relates to the technical field of press control, and constructs a uniform stamping state representation through deep excavation and fusion of force and displacement process data streams generated in the servo press. On the basis, a double-time-scale implicit state estimation algorithm is introduced, time sequence modeling and deep analysis are carried out on weak and gradual change characteristics contained in a full-stroke force displacement curve, and therefore accurate quantitative evaluation of the implicit state of mold abrasion is achieved. Then, the quantized wear value serves as a core decision factor, a self-adaptive control mechanism based on a compensation knowledge base is driven, and an optimal process compensation strategy and a sliding block target track are dynamically generated. Therefore, the product quality consistency in the precise stamping process can be improved, the service life of the die is effectively prolonged, the production cost is reduced, and the intelligent level of stamping production is comprehensively improved.

The utility model belongs to the field of mold preheating, and provides a full-automatic mold preheating machine which comprises a flame nozzle, an oil tank, an oil conveying pipe, an air compressor, a main air pipe, a negative pressure generator, a negative pressure pipe, a first electromagnetic valve, an oil suction pipe and a control panel. The oil conveying pipe communicates with the oil tank and the flame nozzle; one end of the main air pipe is communicated with the air compressor, and the other end of the main air pipe forms a first branch air pipe and a second branch air pipe which are connected in parallel; an air inlet and an air outlet which are coaxially arranged are formed in the negative pressure generator, a bypass opening communicated with an air channel between the air inlet and the air outlet is further formed, the air inlet is further communicated with the second branch air pipe, and the air outlet is communicated with the external atmosphere; the negative-pressure pipe communicates with the top of the oil tank and the bypass opening. The first electromagnetic valve is mounted on the second branch air pipe; the other end of the oil suction pipe is a free end; the control panel is in communication connection with the air compressor and the first electromagnetic valve.

The invention discloses a pressing device for rubber product processing, and relates to the technical field of press machines for rubber processing, the pressing device comprises a press machine rack, a press roller driving mechanism, a pressure adjusting piston, a main press roller, an auxiliary press roller, a pressure feedback piece, a magnetic compensation piece and a rubber contour prediction piece, the press machine rack is internally provided with a pressing chamber; a main compression roller and an auxiliary compression roller are installed through a supporting seat and driven by a compression roller driving mechanism to rotate, a pressure adjusting piston adjusts the overall pressure of the main compression roller, a pressure feedback piece on the main compression roller can dynamically detect the pressing pressure and generate a magnetic field, and a magnetic compensation piece of the auxiliary compression roller is matched with the magnetic field to achieve local pressure compensation. Compared with an existing press machine, the press machine has the advantages that the press fit quality and stability of rubber products can be improved through pretreatment detection, gradient pressure compensation and multi-parameter cooperative control, and the production efficiency is improved. And the universality and adaptability of equipment are enhanced.

The invention discloses an automatic die changing control system of a press machine. The automatic die changing control system comprises a programmable logic controller, electrical hardware electrically connected with the programmable logic controller and an execution component. The programmable logic controller is configured to achieve the control functions of sliding block die-filling height adjustment, balancer air pressure adjustment, die clamping device action, movable workbench operation and die identification number switching, and triggers at least two control functions to be executed in parallel in the die changing process. The programmable logic controller is connected with all electrical hardware and execution components through preset program logic so as to control starting, running and ending of the automatic die changing process in the whole process.

The invention provides a bottom dead center position self-adjustment control method and system for servo stamping equipment, and the method employs a double-speed cooperation architecture of a field programmable gate array (FPGA) and a micro control unit (MCU): the FPGA carries out the high-frequency collection and preprocessing of position, direction, current, temperature, vibration and acceleration signals in a bottom dead center core region, and transmits the signals to the MCU at a low time delay; the MCU executes bottom dead center reference calibration and transmission chain back clearance recognition, constructs a comprehensive error in combination with Kalman filtering state estimation, solves the compensation amount in a rolling mode based on model predictive control (MPC), and writes the compensation amount into a servo driver fine adjustment motion curve through a bus in cooperation with dynamic dead zone control, so that the position of a bottom dead center is stably converged for a long time, and the stamping precision and consistency are improved.

A press (1) for pressing liquid-containing material (2), in particular grapes, comprises a flexible, liquid-tight, sack-shaped press container (10) with a juice outlet (14) formed on its bottom (10b) which can be closed by a juice drain valve (12) and a pressure medium chamber (30) formed on its outer wall (10a) which includes a circumferential, self-contained air chamber (32) which can be filled with compressed air via a valve (34), a sack-shaped inner container (40) made of liquid-permeable flexible mesh fabric which can be inserted into the interior of the sack-shaped press container (10) and which can be filled with material (2), and closure means (50) with which the sack-shaped press container (10) can be closed in a substantially liquid-tight manner after the sack-shaped inner container (40) has been inserted. The invention further relates to a method for pressing liquid-containing material (2) using such a press (1).

The invention discloses a plate stamping method and device, electronic equipment and a medium, and relates to the technical field of stamping machining. The method comprises the steps of obtaining a design file of a board; the plate is conveyed to the processing track through the conveying device; according to the design file, the plate is divided into a plurality of machining areas, the punching module is divided into a plurality of punching areas, and a punch set of each punching area is determined; pre-punching is sequentially conducted on all the machining areas of the plate in the extending direction of the separation notches through a first punching machine; punching is conducted on the corresponding machining areas through each punch set of the punching module; the connecting sections between the multiple separation holes of each machining area are punched in sequence through a punching module, so that the multiple separation holes communicate with one another to form separation grooves; when the plate arrives at the outlet of the processing track, the plate is divided into two plate pieces with the same size along the separation groove through the separation piece. According to the method, various assembly holes with different sizes can be punched at the same time through one punching die.

The invention discloses an automatic carrying and stamping device for automobile parts, and relates to the technical field of automobile part machining equipment.The automatic carrying and stamping device comprises a supporting frame, a control system is installed at the front end of the supporting frame, a stamping mechanism is arranged at one end of the supporting frame, and two L-shaped clamping plates are arranged in the supporting frame; a long plate is installed at the upper end of the supporting frame, two sets of long guide rails are installed at the upper end of the long plate, three sets of supporting bases are installed at the upper end of the long plate, a long screw rod is rotationally installed between the two sets of supporting bases, and a first servo motor is installed at one end of the other set of supporting bases. The X-axis carrying mechanism, the Y-axis carrying mechanism and the Z-axis carrying mechanism are high in positioning precision, the X-axis carrying mechanism, the Y-axis carrying mechanism, the Y-axis carrying mechanism and the Z-axis carrying mechanism are matched with the secondary guiding function of the guiding and stabilizing assembly, the transverse displacement positioning precision and the longitudinal displacement positioning precision are controlled, the material placement deviation is controlled, the size precision of stamped products is greatly improved, and the product percent of pass is improved.

The utility model relates to a waste material compression mechanism, which is used for compressing waste materials and comprises a compression bottom plate, a material pushing assembly, a gate assembly, a compaction cavity, a connecting pipeline and a waste material trolley, the compression bottom plate is detachably installed on a waste material machine frame, the compaction cavity is fixedly arranged on the compression bottom plate, the connecting pipeline is installed at the upper end of the compaction cavity, and the gate assembly is connected with the waste material trolley. The connecting pipeline is communicated with the discharging opening, the gate assembly is installed at one end of the compaction cavity, the pushing assembly is installed at the other end of the compaction cavity, and the waste trolley is aligned to the gate assembly. According to the waste compression mechanism, after the compaction cavity is full of materials, the material pushing assembly drives the compaction cavity to reciprocate relative to the gate assembly, waste located in the compaction cavity is compressed to the specified thickness and pushed into the waste trolley, and after the waste trolley is full of materials, the waste trolley can be pushed to conduct waste treatment, so that compression and storage treatment of the waste is achieved; shutdown for waste treatment is not needed, and production efficiency is improved.

The invention relates to a semiconductor device manufacturing technology, and aims to provide a preparation method of refined coke powder and high-purity isostatic pressing graphite. The method comprises the following steps: by taking calcined petroleum coke or calcined pitch coke as a raw material, crushing and grinding to obtain primary coke powder, then carrying out high-temperature halogen impurity removal treatment in a continuous heating manner, and introducing Freon gas in the process; cooling to obtain impurity-removed coke powder; and carrying out dispersion, grinding, shaping treatment, airflow classification and magnetic separation to obtain refined coke powder. According to the method, the impurity content is greatly reduced from the raw material end, the situation that a large number of metal impurities generated during smashing and grinding treatment cannot be eliminated in the graphitization process due to the fact that the metal impurities are located below the surface layer of a blank can be avoided, and the internal impurity content of a final graphite product is smaller than 20 ppm; higher tap density can be obtained, and a better mixing and kneading effect is realized; the porosity of an isostatic pressing graphite product can be reduced, the microstructure of a graphite material is effectively improved, and the corrosion resistance of the graphite material is effectively improved.

The invention relates to the technical field of aviation part manufacturing and metal punch forming, in particular to an aviation volute spiral spring punch forming method which comprises the following steps: a data acquisition step: acquiring real-time modulus data and a target geometric trajectory equation of a to-be-processed plate; an energy mapping calculation step: performing energy mapping on the trajectory equation, and determining a target strain energy density distribution diagram representing the energy dissipation gradient; a potential barrier parameter determination step: determining a deformation energy potential barrier parameter of the current forming position in combination with the real-time modulus; a rheology compensation resolving step: resolving a rheology compensation control instruction set containing ultrasonic excitation and piezoelectric driving parameters based on potential barrier parameters; a dynamic forming execution step: driving the dynamic rheological compensation die system to execute stamping operation; according to the method, dimension raising from geometric shape copying to energy flow control is achieved, the fatigue life of the spring is remarkably prolonged, and geometric consistency of the spring is remarkably improved.

The utility model relates to the technical field of plastic raw material powder extrusion dewatering, in particular to an extruder dewatering machine barrel which comprises a machine barrel and a dewatering mechanism, the machine barrel comprises a barrel wall and an extrusion cavity defined by the barrel wall, and at least one dewatering opening is formed in the barrel wall; the dewatering mechanism comprises a dewatering screen and a fixing device, the dewatering screen is arranged in the dewatering opening and matched with the barrel wall, and the fixing device is used for fixing the dewatering screen in the dewatering opening; the dewatering screen comprises at least two plates, and at least one drainage channel is formed between every two adjacent plates. The dewatering machine barrel can effectively discharge separated water in the extruder, and the dewatering screen of the combined structure further reduces the machining difficulty of a drainage channel. The drainage channels are different in height, and when the dewatering screen is extruded, the drainage channels can not be pressed and blocked. The drainage gaps of the drainage channels are consistent in length, and accumulation of materials in the drainage gaps is avoided. The angle of the dewatering screen can be set according to needs, and the dewatering effect is further enhanced.

The present invention relates to the technical field of hot stamping steel. Disclosed is a soaking-type stamping method and apparatus for hot-formed steel, comprising the following steps: step 1: transporting a prepared blank into a furnace chamber for austenitizing heating, the blank being made of a hot-formed steel material; and step 2: immersing a lower forming punch into a liquid medium within a tank assembly, and placing the heated blank onto a material support frame by means of a loading manipulator, the tank assembly being internally provided with the liquid medium. A soaking-type stamping method is used in the present invention, which, compared to the direct hot-forming method in the prior art, optimizes the structure of a mold, reduces the machining of water channels in hot stamping devices of the prior art, and shortens the processing cycle and reduces costs while broadening the applicable range of materials, solving the issue of oxide scale on uncoated plates and the lime problem of galvanized steel plates, and having low investment costs and being easily controlled for automation.

The invention belongs to the technical field of mold pressing equipment, and particularly relates to an electric forming device of a mold pressing machine. Comprising an electric cylinder driving unit, a guide mechanism, a push rod and a heating module, the electric cylinder driving unit is connected with the push rod through a movable connector, the push rod is installed on the guide mechanism, the tail end of the push rod is connected with a cooling plate, and the heating module is installed below the cooling plate. And dual adjustability of the thrust and the stroke position is realized. The device can realize the complex profiling action of multi-section stroke and multi-section thrust, which cannot be realized by the traditional fixed-stroke cylinder.

The underlying invention relates particularly to a hydraulic forming machine, more particularly a forging hammer, for workpiece forming, comprising a hydraulic cylinder for driving a ram configured for workpiece forming, and a hydraulic circuit configured for operation of the hydraulic cylinder, wherein the hydraulic circuit has an actuator with an adjustably variable volume flow via which a first hydraulic working chamber of the hydraulic cylinder, used to accelerate the ram during the execution of a working stroke (A) for workpiece forming, can be provided with hydraulic fluid. The hydraulic circuit is configured to adjust and vary the volume flow of the valve or actuator, depending on a setpoint speed (Vsoll) of the ram to be achieved in an acceleration phase of a working stroke (A), and to optimize the subsequent movement phase.

A punching device for punching out blister packs from a blister strip having at least a first and a second punching element. The first punching element has at least one punch and the second punching element has a die. The first punching element is movable back and forth in a punching direction in such a way that the punching device alternately assumes an open position and a closed position. The first punching element has a plurality of punch sets, each of which comprises a punch, an actuating plate and a plurality of punch guides, which extend between said punch and the actuating plate and are connected thereto, wherein the punch guides extend through a base plate of the first punch element. The base plate of the first punching element has a punch set stop, which is in contact with the actuating plate in an operating position of said punch.

The invention provides a pulverized coal forming method based on multistage pressure regulation and a parameter optimization system thereof, and relates to the technical field of pulverized coal forming. S2, a multi-stage pressure loading forming stage; s3, a forming parameter dynamic optimization stage; and S4, a cooling shaping and quality detection stage, and the invention provides a pulverized coal forming parameter optimization system comprising a multi-stage hydraulic forming mold, an online detection device, a dynamic control module and a quality closed-loop feedback unit, according to the pulverized coal forming method and the parameter optimization system thereof, a multi-stage pressure loading mechanism is introduced in the forming process; and process parameters are dynamically optimized by combining the characteristics of the raw materials, so that the strength of the pulverized coal molded block is improved, the energy consumption is reduced, the service life of a mold is prolonged, the adaptability of a molding system to different coal qualities is improved, and the requirements of industrial continuous production are met.

The invention provides forming equipment for magnetic material processing, and belongs to the technical field of magnetic material processing. Comprising a magnetic press body, a moving plate is installed on the right side wall in the magnetic press body through an air cylinder moving mechanism, a feeding opening is formed in the center of the top end of the moving plate, guide grooves are longitudinally and symmetrically formed in the lower section of the inner wall of the feeding opening, and sliding grooves transversely penetrate through the side walls of the two guide grooves; a knocking assembly is arranged between the sliding groove and the feeding control assembly. The width of the discharging channel and the inclination angle of the material guide plate are adjusted through the feeding control assembly, so that the discharging channel can be rapidly matched with different molds; the vibration position is automatically adjusted through the knocking assembly according to the size of the channel, a self-adaptive flow promoting mechanism is formed, and the feeding efficiency and reliability are jointly improved.

A baler implement includes a main frame, a baling chamber, a compressing member, a first input assembly, a second input assembly, a weight sensor, and a baler controller. The compressing member compresses the bale within the baling chamber. The first input assembly senses data related to variable dimension of the bale. The second input assembly senses data correlated to a dry matter density of the bale. The weight sensor sense data related to a total weight of the bale in the baling chamber. The baler controller receives the signal indicative of the total weight of the bale from the weight sensor, calculates a moisture weight of the bale based on a numerical difference between the total weight of the bale and a dry matter weight of the bale, and communicates the moisture weight of the bale to a communicator.

The invention relates to the technical field of intelligent control, in particular to an operation state monitoring method for aluminum plate stamping equipment, and the method comprises the steps: obtaining aluminum plate defect data to recognize a local defect mode, and determining a defect state vector; online learning and updating a coupling influence matrix describing the cross influence between the parameters and the defects; on the basis of the updated matrix and the current defect state, the optimization searching pressure adjustment amount capable of cooperatively adjusting all parameters is calculated globally; and setting and executing parameters of the next period by applying the optimization pressure adjustment amount. According to the method, collaborative optimization of the stamping pressure is achieved through online learning of the coupling relation between the pressure parameters, local control conflicts are effectively avoided, global optimal control over the overall defects of the aluminum plate can be rapidly and stably achieved, and therefore the forming quality of the aluminum plate is improved.

The utility model relates to the technical field of squeezing equipment, in particular to squeezing equipment for fruit juice processing, which comprises a squeezing box, an inclined guide plate is fixedly mounted on the upper portion of one side of the outer surface of the squeezing box in a welded manner, and threaded first smashing teeth are arranged in the middle of the inner surface of the squeezing box. A conical smashing roller is mounted in the squeezing box, second threaded smashing teeth are integrally arranged on the outer surface of the smashing roller, the second smashing teeth and the first smashing teeth are meshed with each other, a fixing cover is welded to the upper surface of the squeezing box, and a motor is mounted on the upper surface of the fixing cover; a connecting rod is arranged on the upper surface of the smashing roller and penetrates through the fixing cover to extend to the outside to be connected with the output end of the motor. According to the fruit juice squeezing and crushing device, multiple squeezing and crushing of fruits from rough to fine are achieved, fruit juice is controlled to be squeezed and discharged multiple times through the multiple crushing effect, and therefore the fruit juice is fully squeezed in the crushing process while the crushing effect is improved.

To solve the problem that a conventional empty can crusher requires great power to crush an empty can and has to exclusively look for a trash box after crushing the can.SOLUTION: An empty can crusher is provided with: a base part which has an opening part and a can-slope part and on which an empty can whose side part is crushed can be placed; and a lever part in which a can-crushing protrusion part in a polygonal shape is arranged in a width direction, whose one end is energized upward and whose other end is turnably attached to an end of the base part. The empty can crusher can be used to crush the empty can with comparatively small power. The empty can crusher is configured to enable a crushed empty can to be automatically put in an empty can collection part, so that the crusher can be placed on a conventional empty can trash box. This enables one empty can trash box to collect more empty cans, which can contribute to beautification in town.SELECTED DRAWING: Figure 5

Generally described, one or more aspects of the present disclosure relate to methods, systems, and devices related to a powder dispensing system, including a pair of calender rolls, a first conical hopper and a second conical hopper positioned above the pair of calender rolls, each hopper having a first temperature controlled fluidized section, a first flow control system in fluidic connection with the first temperature controlled fluidized section, and a second flow control system in fluidic connection with the second temperature controlled fluidized section, a vertical linear actuator configured to adjust a distance between the first conical hopper, the second conical hopper and the pair of calender rolls, and a horizontal linear actuator positioned between the first conical hopper and the second conical hopper.

The invention provides a safety partition and safety path control method and system for a series press line, and belongs to the technical field of press control. The method comprises the steps that a mode selection instruction is received, a whole line operation mode is recognized, and safety partition configuration is generated; collecting safety signals and moving trajectory data in real time, and establishing a whole line safety control model and a stamping unit safety sub-model in a bus safety controller; calling a whole-line safety control model and a safety sub-model to compare and evaluate a safety state in real time, and triggering safety operation according to a whole-line operation mode when the safety state is abnormal; in the teaching or running process of the carrying path, a safety motion state machine is established for the carrying equipment in the activated partition, and safety control is conducted on the carrying path; and when a person needs to enter the line body, responding to a maintenance request, automatically planning a fault maintenance small partition, executing energy locking and activating a safety scanner to dynamically monitor the position of the person according to a safety partition configuration mode. According to the invention, accurate matching of the security resources and the production requirements is realized.

The invention discloses a multi-axis linkage high-speed blanking system, and relates to the technical field of multi-axis linkage blanking. Comprising a motion control unit which is used for receiving a blanking operation instruction and coordinating motion shafts driven by a plurality of servo motors to perform synchronous motion so as to realize preset punching track and blanking operation; and the dynamic synchronous deviation detection module is connected with the motion control unit and is used for monitoring the actual motion state of the motion shafts driven by the plurality of servo motors in real time and determining the instantaneous synchronous deviation between the actual motion state and a preset synchronous motion track. Multi-axis position, speed and acceleration data are collected in real time through the dynamic synchronous deviation detection module and compared with a preset track, and multi-axis dynamic coupling deviation is accurately captured; and then a lateral perturbation force suppression module is combined with blanking parameters to establish a model, and the asymmetric lateral perturbation force when the punch cuts into the material is predicted.

The invention discloses solid waste treatment equipment for urban environmental protection, and relates to the technical field of waste treatment, the solid waste treatment equipment comprises a waste treatment group, and further comprises an anti-splashing fibrosis treatment conveying group, a uniformly distributed compression group and an adaptive deslagging filtering group; the roll shaft piece A and the roll shaft piece B are used for pressurizing / extruding the plant source waste in the transferring process; under the further treatment of the uniformly distributed compression group, the dual synergistic effect is achieved, and the compaction pain point is directly hit, so that the compaction quality and efficiency of the plant source waste are greatly improved; the roll shaft piece breaks vegetable long fibers through extrusion, and the possibility of cross winding of the fibers is preliminarily broken; the subsequent conical thorn pieces further pierce the residual fiber bundles, so that the fibers are prevented from being hooked again to form a'fiber arch frame '; meanwhile, the conical thorn piece can pierce a plastic bag / vegetable leaf wrapped with water, and a flexible supporting point is eliminated; and the materials are uniformly stressed in the compaction cavity through the mutual matching of the compaction cavity and the conditions of local overhead and non-uniform looseness are avoided.