1641results about "Packaging by pressurising/gasifying" patented technology

The utility model relates to the technical field of packaging machines, and discloses a novel food vacuum packaging machine which comprises a machine body, and a station rotating disc device capable of rotating in a stepping mode is arranged above the top of the machine body. A bag storage device, a bag conveying device, a bag opening device, a bag opening device, a discharging device and a shaping device which can be matched with the station rotating disc device are arranged around the station rotating disc device, a clamp displacement device is arranged on one side of the shaping device, and a lifting conveying belt is arranged on the front side of the clamp displacement device. Double-station vacuum boxes located above the lifting conveying belt are installed on the two sides of the lifting conveying belt through supports correspondingly. The packaging bag filled with materials is moved to the double-station vacuum box through the clamp displacement device to be vacuumized and sealed, and is conveyed to the next process through the lifting conveying belt, so that the double-station vacuum sealing machine is simpler and more convenient, and the efficiency is improved.

The invention relates to the field of filling, in particular to a full-automatic horizontal filling machine which is characterized in that a bag supply mechanism is used for conveying a single filling bag to a bag grabbing station; the bag grabbing mechanism is used for transferring the filling bags to the bag clamping and conveying mechanism; the bag clamping and conveying mechanism is used for conveying the filling bags from all the stations to the next station. The bag opening mechanism is used for opening an opening of the filling bag; the inflating mechanism is used for inflating the filling bag to open the filling bag; the discharging mechanism is used for filling the filling bags below with materials. The vacuumizing mechanism is used for pumping out excess air around the materials in the filling bag; the vibration mechanism is used for reducing gaps among the particle materials; the heat sealing mechanism is used for sealing the filling bags filled with the materials; the finished product output mechanism is installed at the position, corresponding to the heat sealing station, below the bag clamping and conveying mechanism. And the finished product output mechanism is used for conveying the finished products out of the rack. The device has the following technical effects that the automation degree is high, the labor cost is saved, and the working efficiency is greatly improved.

The present invention relates to a food packaging device, and particularly to a rotary vacuum pumping device for a food packaging device. The present invention provides the following technical solutions: A rotary vacuum pumping device for a food packaging device includes a turntable and a vacuum pumping assembly. The vacuum pumping assembly includes a base and a cover body. An opening and closing cover driving mechanism is provided between the turntable and the vacuum pumping assembly. A support frame is provided on the turntable. The cover body is connected to the support frame through a support arm. A closing position tension adjusting member is provided between the support frame and the cover body; the base is hingedly connected to the turntable through a hinge block. The base has a linkage station. The support arm and the linkage station of the base are linked through a connecting rod. One end of the connecting rod extends between the two hinge points of the support arm and is hingedly connected to the support arm, and the other end is at the linkage station and is hingedly connected to the linkage station. By adopting the above technical solutions, a rotary vacuum pumping device for a food packaging device with energy saving, shortened vacuum pumping time, and simple structure is provided.

The invention discloses packaging equipment for bread production and processing, and belongs to the technical field of bread production.The packaging equipment comprises a bottom frame and a processing table board obliquely arranged on the bottom frame, a conveying through hole is formed in the processing table board in a penetrating mode, a conveying mechanism is arranged in the conveying through hole, and an adjusting mechanism is arranged on one side of the conveying mechanism; an inflation heat sealing mechanism is slidably connected to the other side of the conveying mechanism, the sliding direction of the inflation heat sealing mechanism is perpendicular to the conveying direction of the conveying mechanism, a partition type lossless exhaust mechanism is arranged above the middle of the conveying mechanism, a supporting column is arranged on the upper wall of the machining table top, and a fixed top plate is arranged at the upper end of the supporting column. And the partitioned lossless exhaust mechanism is arranged below the fixed top plate. According to the packaging equipment for bread production and processing, air in a packaging bag is exhausted by blowing air into the packaging bag, and bread of different sizes can be packaged.

The invention provides a powder oxygen-free inert gas environment filling line and a filling method.The filling line comprises a conveying chain, a transfer bin, a working bin, a buffering bin, a filling device, a vacuumizing device, an inert gas inflation device and a cap screwing device, and the conveying chain sequentially penetrates through the transfer bin, the working bin and the buffering bin; a filling opening of the filling device and the cap screwing end of the cap screwing device are both located in the working bin, sealing doors are arranged at the end, away from the working bin, of the transfer bin, the position between the transfer bin and the working bin, the position between the working bin and the buffering bin and the end, away from the working bin, of the buffering bin correspondingly, and the vacuumizing device communicates with the transfer bin, the working bin and the buffering bin in sequence through a first pipeline. The inert gas charging device is sequentially communicated with the transfer bin, the working bin and the surge bin through a second pipeline, oxygen detection sensors and gas pressure sensors are arranged in the transfer bin, the working bin and the surge bin, and the filling line can ensure that the filling process is in an oxygen-free environment, so that the quality of powder products is ensured.

The present invention provides a vacuum air extraction device with high practicality and reliability. The vacuum air extraction device with high practicality and reliability includes an air extraction host machine and a vacuum sucker in matching connection to a lower part of the air extraction host machine, where a control circuit board, a vacuum air pump and a decompression valve are arranged in the air extraction host machine; an annular groove body is formed in one end connected to the air extraction host machine, of the vacuum sucker; a spongy body for filtering air is arranged in the annular groove body; air extracted through the air extraction host machine passes through the air circulation channel to enter the annular groove body, is filtered at the spongy body, and then flows into the vacuum air pump.

The invention provides an antioxidant enzyme-containing composition and a preparation method thereof, and relates to the technical field of enteritis treatment. The preparation method comprises the following steps: S1, collecting various component materials for preparing the antioxidant enzyme-containing composition: collecting various raw materials for preparing glucan, fructo-oligosaccharide, galactooligosaccharide, superoxide dismutase, vitamin C, bunge cherry seed powder, cassia seed powder, turmeric, sorbitol, hydroxypropyl methyl cellulose, silicon dioxide and magnesium stearate; according to the invention, a matched powder bagging machine is adopted to realize full-automatic unattended operation to automatically complete the large bag filling and sealing step in the steps S4-S10, vacuumizing is performed firstly and then sealing is performed, and the storage space is compressed by vacuumizing, so that the condition that the bag is expanded and broken by internal air pressure in the transfer and storage process is not easy to cause; in the bag sealing process, the phenomena of high hot melting efficiency and high sealing speed are achieved by adopting a bag strip guiding and rolling hot melting mode.

The invention relates to the technical field of packaging machines, and discloses a modified atmosphere packaging machine and a packaging technology thereof. The workbench is provided with a packaging mechanism used for packaging boxes, a feeding mechanism used for transporting the boxes to be packaged in the direction of the packaging mechanism, a material arranging mechanism used for adjusting the distance between every two adjacent boxes and a discharging mechanism used for transporting the packaged boxes in the direction away from the packaging mechanism. The box packaging device has the effect of improving the box packaging efficiency.

The invention relates to the technical field of rust-proof treatment of metal products, in particular to a rust-proof discoloration-proof packaging system and method for a bronze-plated tire bead wire. The system sequentially comprises a cleaning unit, a surface treatment unit, a drying box, a film coating device, a cooling unit, a post-treatment unit, a take-up device and a packaging system according to the process. The core of the process method is as follows: the steel wire is immediately coated with a special antirust film coating agent to be cured by using waste heat generated after the steel wire is dried, and the film coating agent comprises water-based resin, a silane coupling agent, a conductive polymer, a nano filler and benzotriazole; during packaging, an intelligent packaging system with a built-in humidity response humidity control bag is adopted, and the humidity control bag can automatically release inert gas and a moisture absorbent when the environment humidity reaches a preset threshold value. Multiple synergistic protection on the surface of the steel wire is achieved, the anti-rust period is remarkably prolonged to 12 months or above through dynamic humidity control, meanwhile, the bonding performance and the retention rate of the steel wire and rubber are improved, and energy conservation and environment protection are achieved.

The utility model relates to the technical field of beverage cup processing, and provides a printing cup automatic packaging and marking device which comprises a controller, a rack, a first conveying mechanism, a second conveying mechanism, a limiting mechanism, a pushing mechanism, a counting sensor, a sealing, cutting and thermal shrinkage all-in-one machine, an air blowing mechanism and a packaging bag printing machine. The limiting mechanism is arranged on the machine frame in a vertically-lifting mode and located between an outlet of the first conveying mechanism and an inlet of the second conveying mechanism, the conveying of the plastic cups is separated according to the packaging number of the plastic cups, and the blowing mechanism is arranged at the front end of a plastic bag packaging groove of the sealing, cutting and thermal shrinkage all-in-one machine and blows air into a plastic bag space for packaging the plastic cups. The first conveying mechanism, the second conveying mechanism, the limiting mechanism, the pushing mechanism, the sealing, cutting and thermal shrinkage all-in-one machine, the blowing mechanism and the packaging bag printing machine are all connected with and controlled by a controller. The small-package plastic cup packaging machine solves the problems that existing small-package plastic cups are slow in packaging speed and low in efficiency.

The utility model discloses preserved meat packaging and film covering equipment which comprises a box body, a plurality of carrying frames are transversely connected in the box body in a sliding mode, the two sides of each carrying frame are connected with driving mechanisms arranged in the side walls of the box body, a plurality of clamping columns are longitudinally connected between frame plates on the two sides of each carrying frame in a sliding mode, and electric heating plates are arranged on the opposite faces between the clamping columns. The outer end face of the clamping column on the outermost side is longitudinally connected with the output end of a pushing air cylinder on the carrying frame, an evacuating cover matched with the opening of the box body is arranged above the opening of the box body, and a plurality of sealing mechanisms are longitudinally arranged in the evacuating cover and located between every two adjacent carrying frames; according to the equipment, a folded thermal shrinkage film can be clamped through cooperation of the clamping columns, the thermal shrinkage film is subjected to thermal sealing to form mutually independent small bags, then the distance between the carrying frames is shrunk through the driving mechanism, the small bags are extruded open for bacon bagging, finally, the small bags are vacuumized and sealed through the closed vacuumizing cover, the labor cost in the bacon packaging process is reduced, and the production efficiency is improved.

The invention belongs to the technical field of vacuum packaging of roasted seeds and nuts, and particularly relates to a vacuum sealing mechanism for automatic packaging of roasted seeds and nuts, which comprises a base, a connecting disc is rotatably arranged above the base, three groups of fixing assemblies uniformly distributed along the circumferential direction of the connecting disc are arranged on the connecting disc, and U-shaped fixing frames are arranged on the fixing assemblies. An opening binding mechanism is arranged on the U-shaped fixing frame, and a heat sealing assembly is arranged on the opening binding mechanism. According to the invention, the material transfer waiting time among traditional multiple stations can be saved, the complex signal coordination control difficulty and equipment debugging difficulty among traditional multiple stations are reduced, and the stability and packaging efficiency of equipment in high-speed production are improved; and when the packaging bag filled with the materials is shaped, three-dimensional constraint including bottom supporting, middle extruding and part limiting can be formed, the problems that the roasted seed and nut particles are loose up and down and large in thickness difference due to uneven extruding stress are solved, and the packaging quality of the sealed packaging bag is improved.

The invention discloses an automatic coffee capsule filling and sealing machine which comprises a filling mechanism, a powder compacting mechanism, a sealing film punching and sealing mechanism and a vacuumizing and nitrogen filling mechanism which are mutually combined for use to play a role. Compared with a traditional structure, the sealing film punching and sealing mechanism has the advantages that the knife is hidden in the base, and operators cannot be hurt during maintenance or operation, the size of the powder pressure is adjusted through the pressure of the powder rotating air cylinder, so that the capsule coffee is compacted, and the sealing film punching and sealing mechanism is simple in structure and convenient to operate; and secondly, in the operation process of each cycle, the starting and stopping positions of the sealing pressure head heating system are separated from the sealing opening film pressing cutter device, the vacuumizing and nitrogen filling mechanism vacuumizes the capsule cup filled with materials, directly sucks away air and supplements nitrogen into the capsule cup, and the almost oxygen-free environment in the capsule cup is achieved.

The utility model discloses a milk powder vacuumizing temporary storage device, and relates to the technical field of vacuum packaging. The device comprises a temporary storage mechanism and a vacuum pump, the temporary storage mechanism is connected with the air inlet end of the vacuum pump, the temporary storage mechanism comprises a temporary storage box and a separation box, and the separation box is fixedly installed on the top of the temporary storage box. According to the utility model, airflow passing through the space between the buffer box and the separation box is filtered through the filter plate, so that part of powder entering the vacuum pump along with the airflow is intercepted and filtered in the vacuumizing process of milk powder canning, a small amount of residual powder is adhered to the bottom of the filter plate, and the filter plate is driven by the rotating mechanism to rotate; due to the fact that the other end of the separation channel is communicated with the outside, airflow enters from the other end of the separation channel and is discharged along one end of the separation channel, and therefore powder adhering to the bottom of the filter plate is blown off.

The invention relates to the technical field of vacuum machines, and particularly discloses a cavity type vacuum machine capable of being simultaneously suitable for internal pumping and external pumping. An air nozzle is arranged on the inner wall of the vacuum cavity, and the outer edge of the front end of the vacuum cavity is sunken downwards; the vacuum pump is mounted on the case and is communicated with the air tap; the two conductive columns are mounted in the case; the heating rod is arranged in the vacuum cavity; the box cover is installed on the machine box and used for opening or closing the vacuum cavity, a blocking piece is arranged on the inner wall of the front end of the box cover, and the blocking piece is attached to the outer edge of the front end of the vacuum cavity in the using process; the pressing strip is mounted on the inner side of the box cover; in the external vacuumizing process, the vacuum bag is horizontally arranged on the outer edge of the front end of the vacuum cavity and the upper surface of the heating rod. In the built-in vacuumizing process, the vacuum bag is horizontally arranged in the vacuum cavity and on the upper surface of the heating rod. According to the vacuum machine, materials such as food and the like and vacuum bags can be placed inside and outside the vacuum cavity to be vacuumized.

To provide a packaging method and a packaging apparatus that surely prevent air leakage and package continuously and cleanly in a near-vacuum condition.SOLUTION: A packaging apparatus of the invention comprises: a plurality of conveyors 26, 28, 30, 32 that continuously convey a pair of film rolls 14, 18 wound with long packaging films 12, 16 and packaged products 20 to be wrapped between a pair of wrapping films 12, 16 from upstream to downstream along the draw direction of the wrapping films 12, 16; a first vertical sealing device 34 which cuts and welds crossing the longitudinal direction of a pair of packaging films 12, 16, and welds the upstream side end while making the downstream side end of the cut packaging films 12, 16 to be an opening; a pair of lateral sealing devices 54 which are positioned on the downstream side of the first vertical sealing device 34 and which weld both side edge parts along the drawing direction of the pair of packaging films 12, 16; and a second vertical sealing device 68 which is positioned on the downstream side of the horizontal sealing device 54, crosses the pair of packaging films 12, 16 in the longitudinal direction, and welds the opening 52.SELECTED DRAWING: Figure 1

The utility model discloses a vacuum integrated module mechanism of a condensate bead packaging machine, which comprises a roller mould and a support seat, the roller mould comprises a turntable and a mould plate fixed on the outer circumference of the turntable, and vent holes are arranged on the turntable at one end of the roller mould along the center circumference array. Each vent hole is connected with the corresponding mold plate through an exhaust pipe; a vacuum switching assembly is mounted on the supporting seat on one side of the roller mold, the vacuum switching assembly comprises a vacuum switching block, a first arc-shaped groove and a second arc-shaped groove are formed in the vacuum switching block, the vacuum switching block is attached to the section of the rotary table, and the first arc-shaped groove and the second arc-shaped groove are opposite to the vent hole; and the second arc-shaped groove is communicated with external air. The first arc-shaped groove and the second arc-shaped groove which are formed in the vacuum switching block are matched with the vent holes in the rotating disc, so that the vacuum states of the mold plates at different positions are conveniently controlled, and different actions of the mold plates at different positions are conveniently realized.

The invention relates to the field of packaging equipment, in particular to bag type packaging equipment which comprises a base, a feeding base and a back plate, a transfer tray is installed on the top face of the base, a suction cup feeding mechanism is installed on the top of the feeding base, two transfer side baffles are installed on the top of the transfer tray, and an overturning sliding rail is installed on the front side face of the back plate. A sealing clamping plate base is installed on the overturning sliding rails, two sealing clamping plates and an exhaust pipe are installed at the bottom of the sealing clamping plate base, a sealing driving mechanism is installed on the sealing clamping plate base, a sealing baffle mechanism is installed below the sealing clamping plates, and overturning mechanisms capable of enabling the sealing clamping plate base to be overturned by 90 degrees in the circumferential direction are installed on the two overturning sliding rails. A discharging conveying belt is installed on the top of the base, a vibration tray is installed in the discharging conveying belt, and a heat sealing mechanism is installed at the left end of the back plate. According to the vacuum packaging machine, the packaging bag can be driven to be dumped by 90 degrees through the turnover mechanism, so that food in the packaging bag is evenly spread, the surface of the vacuum packaging bag is smooth, and the situation that the food is stacked, raised or sunken is avoided.

The invention discloses a full-automatic packaging assembly line for semiconductor material trays, which comprises a material taking and feeding mechanism, a material tray label tearing and pasting mechanism, a moisture-proof monitoring mechanism, a bagging and packaging helium detection mechanism and a boxing and packaging redetection mechanism which are arranged in sequence, and the assembly line realizes material tray grabbing, visual detection and overturning, old label tearing and new label pasting; the full-process automatic operation comprises the following steps of: automatically placing a humidity card and a drying agent, bagging an aluminum foil bag, vacuumizing, filling helium, carrying out heat sealing, carrying out helium detection, and finally automatically boxing, sealing, rechecking, labeling and stacking. By integrating multi-stage visual positioning and detection, double-path parallel heat sealing and closed-loop quality control, the packaging efficiency and precision are remarkably improved, the sealing performance, moisture resistance and traceability of product packaging are ensured, and the automatic packaging machine is particularly suitable for automatic packaging of precise electronic components such as semiconductors.

The invention relates to the technical field of vacuum equipment, and discloses a packaging bag vacuumizing device and a packaging machine. The packaging bag vacuumizing device comprises two supporting plates which are oppositely arranged, a bag clamping mechanism used for fixing a packaging bag is arranged between the supporting plates, the supporting plates are further provided with vacuum pipes parallel to the bag clamping mechanism, the vacuum pipes are connected to the supporting plates through turnover mechanisms, and the turnover mechanisms are arranged on the supporting plates. The overturning mechanism is used for enabling the vacuum pipe to overturn between a first position and a second position, and when the vacuum pipe is overturned from the first position to the second position, a vacuum suction nozzle on the vacuum pipe is matched with a packaging bag located on a bag clamping station of the bag clamping mechanism and used for extracting gas in the packaging bag. The packaging machine comprises the packaging bag vacuumizing device, and the packaging machine is used for packaging materials and vacuumizing the packaging bag.

The utility model discloses a double-bag vacuum machine which comprises a machine frame, a rotating shaft, a rotating disc and a stand column, the rotating disc is installed in the rotating disc stand column through a bearing, the rotating shaft is in transmission connection with the rotating disc, the rotating shaft is driven by a motor, the rotating disc is connected to the rotating shaft, and vacuum discs evenly distributed on the circumference are installed on the edge of the rotating disc and comprise fixed discs and movable discs. The movable disc is rotationally connected with the fixed disc through a lever arm, one end of the lever arm is movably connected with the movable disc through a connecting plate, the other end of the lever arm is connected with a pull rod, a swing arm on the fixed disc is movably connected with the pull rod, a roller is installed on the swing arm, and an opening and closing guide rail is arranged corresponding to the roller. A first deep groove bearing, a plane bearing and a second deep groove bearing are sequentially arranged between the stand column and the rotary disc from top to bottom, and more than two continuous station adsorption grooves are formed in an air distribution middle disc which is further provided with an air distribution disc on the stand column. Therefore, the technical effects of balanced bearing, sufficient vacuumizing and reasonable and simple opening and closing structure of the vacuum disc are achieved.

The invention relates to an automatic packaging device for agricultural products, and belongs to the technical field of automatic packaging. The automatic packaging device comprises a transfer disc, and a bag taking station, an opening station, a filling station, a sealing station and a discharging station are arranged on the transfer disc. The bag clamping mechanisms are used for clamping packaging bags, and the bag clamping mechanisms are evenly arranged in the circumferential direction of the axis of the transfer disc at intervals; the bag taking mechanism is arranged at the bag taking station and used for feeding the packaging bags to the bag clamping mechanism; the bag opening mechanism is arranged at the opening station and used for opening the packaging bags on the bag clamping mechanism so as to facilitate filling; the filling mechanism is arranged at the filling station and used for quantitatively pouring the products into the opened packaging bags; the sealing mechanism is arranged at the sealing station and used for achieving sealed packaging of the packaging bag; and the discharging mechanism is arranged at the discharging station and used for discharging the packaging bags subjected to sealed packaging from the transfer disc. The green soy bean packaging device has the effect of automatically packaging green soy beans.

The invention relates to the technical field of single-walled carbon nanotubes, in particular to a single-walled carbon nanotube dynamic receiving mechanism integrated with a gas protection packaging function, which comprises a base accommodating box, a gas protection packaging mechanism is integrated in the base accommodating box, and the base accommodating box is used for realizing vacuum adsorption and initial nitrogen charging in a pre-filling stage, gas curtain isolation in a filling process and gas curtain protection during heat sealing; the bottom of the dynamic material collecting mechanism is connected with the material dispersing mechanism, the powder is dispersed and output to the quantitative material distributing mechanism at the bottom through the material dispersing mechanism, and the quantitative material distributing mechanism is connected with the gas protection packaging mechanism through the flexible connecting mechanism; the vibration amplifying mechanism is arranged between the material dispersing mechanism and the base containing box, and powder is promoted to be evenly dispersed and conveyed in an accelerated mode through high-frequency vibration. The oxygen content in the bag is reduced to 0.1% or below through the full-process gas protection design, quantitative material distribution and a vibration dispersion mechanism are combined, accurate metering, uniform conveying and high-airtightness packaging of the single-walled carbon nanotube powder are achieved, and the problems of powder oxidation, agglomeration and pollution are effectively solved.

The utility model provides a silicon core packaging platform, and relates to the technical field of silicon core production. The device comprises a table, a temporary storage unit, a subpackaging unit and a bagging unit, the temporary storage unit, the subpackaging unit and the bagging unit are arranged on the table, the temporary storage unit comprises at least two temporary storage frames, the subpackaging unit comprises at least two subpackaging frames, each subpackaging frame is provided with a plurality of U-shaped subpackaging grooves, the bagging unit comprises two end rollers rotationally arranged on the table, and the end rollers are arranged on the table. A supporting roller is rotationally arranged on the table between the two end rollers, the supporting roller and rotating shafts of the two end rollers are arranged in parallel, and the supporting roller is higher than the two end rollers. The packaging efficiency is improved, and the silicon core is prevented from being broken in the packaging process.

The invention discloses an automatic tea packaging machine, and relates to the technical field of tea packaging machines. The automatic tea packaging machine comprises a tea sorting device used for outputting tea linings, a tea transfer device, a packaging bag storage mechanism, a transfer mechanism, a bag opening mechanism, a packaging and shaping mechanism and a vacuum packaging chamber, and tea with preset weight is output by a weighing hopper and fed into the tea transfer device through a feeding plate; a plurality of outer packaging bags are transversely stacked on the packaging bag storage mechanism, and the transferring mechanism transfers the outer packaging bags to the preset position of the bottom end of the bag opening mechanism through a grabbing suction cup. The automatic tea packaging machine is simple in overall structure and has two packaging modes, the first mode is that tea is directly packaged into an outer packaging bag, and the second mode is that the tea is firstly packaged into an inner film, and then the inner film with the tea is packaged into the outer packaging bag. The whole machine mostly adopts common structures such as a motor, a gear, a rack and a guide rail, and is simple in structure, low in maintenance cost and simple and efficient in action.

The invention relates to the field of packaging equipment, in particular to a multifunctional pneumatic type nut quantitative vacuum bag sealing and packaging all-in-one machine with a grading structure, a cylindrical upper groove body is movably installed in the upper end of a lower groove body, a plurality of screening holes are evenly distributed in the bottom wall of the upper groove body, and a vibration motor is installed on the upper groove body; the bottom wall of the upper groove body is in an inverted cone shape, a discharging pipe which extends downwards and penetrates out of the outer side of the lower groove body is arranged in the center of the bottom of the upper groove body, a snail-shaped material guiding plate is fixedly installed on the inner side of the bottom wall of the upper groove body, and the discharging pipe is located in the center of the material guiding plate. The vibrating motor drives the upper groove body to vibrate, so that nuts roll towards the discharging pipe along the inverted-cone-shaped bottom wall of the upper groove body, dust, impurities, broken nuts and small-particle nuts fall into the lower groove body downwards through the screening holes in the bottom wall of the upper groove body, large-particle nuts are discharged through the discharging pipe, and therefore the nuts are screened in advance before being packaged.

The present invention belongs to the technical field of packaging equipment, and particularly relates to a vacuum packaging equipment, which includes a chassis, a conveying mechanism, a mounting frame, a lifting mechanism, a sealing cover, a heat-sealing assembly, and a negative pressure mechanism; the conveying mechanism and the mounting frame are arranged on the chassis; two clearance openings are provided at the bottom end of the mounting frame to allow the packaging bag on the conveying mechanism to pass through the clearance openings; the lifting mechanism is arranged at the upper end of the mounting frame, the sealing cover is connected to the lifting mechanism, and the lifting mechanism is used to drive the bottom of the sealing cover to fit on the conveying surface of the conveying mechanism and form a closed cavity, the negative pressure mechanism is connected to the closed cavity through a pipeline and is used to extract the air in the closed cavity; the heat-sealing assembly is connected in the closed cavity formed by the sealing cover and is used to heat-seal the bag mouth of the packaging bag. The packaging bag is conveyed to the bottom of the sealing cover by the conveying mechanism. Since the lifting mechanism drives the sealing cover to descend to seal the packaging bag, and then the negative pressure mechanism evacuates the air, the air in the packaging bag is discharged and heat-sealed, realizing automatic heat-sealing packaging and improving the efficiency.

An assembly for securing a film to an object is provided. The assembly may comprise a lid comprising a surface configured to receive the film, where the surface comprises a plurality of vent openings through which positive pressure or vacuum may be applied to the film. The application of a vacuum may flatten the film against the surface. The assembly may also comprise a base comprising a cavity configured to receive and support a tray, and at least two receptacles configured to receive at least two pegs of the lid. The film may comprise a molecular array which may be immobilized on one side of the film.

A sealing machine with notch-cutting function is related to provide a frame on the notch- cutting component of the sealing machine. The center of the frame is pivoted with the base via a pivot shaft and has a first end and a second end on the left and right ends. A notch-cutting knife is fixed on the top surface of the first end. A spring having one end is fixed with the frame and the other end is fixed with the base and has a force to push the first end and the notch-cutting knife to move downward. The top wall of the base is configured with a knife dispensing opening at a position corresponding to the notch-cutting knife. The top wall of the base has an opening at a position corresponding to the second end. The bottom surface of the upper cover is protruding downward to form a top rod at a position corresponding to the opening. When the upper cover faces downward to cover the base, the bottom end of the top rod passes through the opening and presses the second end to move downward, thereby the frame taking a pivot shaft as a pivot point to enable the first end and the notch-cutting knife to move upward, and the notch-cutting knife stretches out above the top surface of the base through the knife dispensing opening. Based on the design, when the upper cover of the sealing machine is not closed, the notch-cutting knife is hidden inside the machine body and the operator will not be injured by notch-cutting knife. Therefore, the present invention provides safe use.