Automatic food packaging mechanical equipment and packaging method

Abstract

The invention discloses automatic food packaging mechanical equipment and a packaging method. An equipment table comprises a packaging part and a power part; the packaging part comprises a film supply assembly, a film rolling assembly, a hot pressing assembly and a material supply assembly; the power part comprises a sucking pump and a motor group; the film supply assembly comprises a film rolling cylinder and a film feeding shaft, the tail end of the film supply assembly is connected to the film rolling assembly, a film guide ring and a film pressing plate are arranged at the feeding end of the film rolling assembly, the hot pressing assembly comprises a hot pressing wheel and a hot pressing plate, and a cutter assembly and a discharging assembly are further arranged below the hot pressing assembly; the quality inspection module is located at the tail end of the discharging assembly and used for weight detection and rejecting of unqualified products. Compared with the prior art, the automatic food packaging mechanical equipment at least has the following characteristics that a vertical film rolling packaging mode is arranged, matching assemblies are reduced, the size of the equipment is reduced, an air exhaust opening structure is arranged to exhaust air making contact with packaging materials in a bag body, the air content in the bag is reduced, and a relatively sealed space is formed; the storage period is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging machinery, and in particular to an automated food packaging machinery and equipment and a method and steps for packaging food when the equipment is used. Background Art

[0002] In order to improve production efficiency, most of the food packaging work is done by automated equipment. In common inner bag packaging machines, the typical packaging methods are gas packaging (refer to CN201820081058.7, a B powder packaging machine) or vacuum packaging (CN202021652995.7, a fully automatic stretch film vacuum packaging machine). Among them, inflation and vacuum packaging are adaptively designed according to the different packaging materials. For cooked food, especially small snacks that are ready to eat after opening the bag, common packaging is sealed by vacuum extraction. Vacuum bags can not only reduce the air contacted by the packaging, but also reduce the storage size, which is convenient for packaging and transportation. For some powder products, gas packaging will be more used, common powdered food packaging machines.

[0003] In the prior art, powder packaging equipment generally first feeds powdered materials into a feeding mechanism, measures the weight, and then feeds the powdered materials into a packaging bag through a loading tube. The packaging bag is formed by firstly rolling a plastic film into a cylinder by other mechanisms and sleeved on the side of the loading tube. Then, the position of the cylinder-shaped plastic film below the discharge port of the loading tube is sealed. When the feeding is completed, the cylinder-shaped plastic film is moved downward and sealed again, thus completing a plastic bag filling and sealing forming process. This packaging machine has the advantages of higher efficiency and more convenient packaging compared to vacuum packaging in the packaging process. However, the existing roll-sealed type is generally used for powder or gas-carrying products. Packaging is difficult for cooked food products that are not suitable for sealing air into the bag. Therefore, cooked food is generally packaged using vacuum packaging equipment. However, the packaging efficiency of common vacuum exhaust equipment on the market is relatively low. In order to improve efficiency, the existing technology uses multiple stations in the same row for synchronous packaging, which also makes the equipment larger. In addition, packaging equipment designed based on vacuum packaging machines is generally set to horizontally feed vacuum bags, open the cover for unloading and replace new films and new materials. This type of packaging may also cause the package to be crushed by the edge of the packaging bag because the vacuum cover is pressed down before the package is placed incorrectly. In addition, unloading of the packaged bags is relatively troublesome.

[0004] Therefore, in order to obtain a roll-sealed bag that can be vacuum-packed and has a high efficiency and small size, it is now necessary to improve the existing device to meet the packaging requirements. Summary of the invention

[0005] In view of the prior art, the purpose of the present invention is to provide an automated food packaging machinery and equipment, which packages ready-to-eat snacks by rolling the film into a tube and sealing the edges, and then cutting and sealing the top and bottom, and improves the arrangement of air extraction to enhance the usability of the equipment.

[0006] In order to achieve the above objectives, the technical solution adopted by the present invention is: an automated food packaging mechanical equipment, including an equipment table, the equipment table including a packaging part for bagging, exhausting and sealing the packaged goods and a power part for providing driving force for the packaging part and having an exhaust device built in;

[0007] The packaging unit includes a film supply assembly, a film roll assembly, several hot pressing assemblies and a material supply assembly;

[0008] The power unit includes an air pump and a motor group. The air pump is used to evacuate air from the semi-enclosed packaging bag, and the motor group is used to provide power for the film supply component, the film roll component, several hot pressing components and the material supply component.

[0009] The film supply assembly includes a film roll drum and a film delivery shaft. The end of the film supply assembly is connected to the film roll assembly. The feed end of the film roll assembly is provided with a film guide ring and a film pressing plate. The hot pressing assembly includes a hot pressing wheel located on the side of the film roll assembly and a hot pressing plate located directly below the film roll assembly. A cutting knife assembly and a discharge assembly are also provided below the hot pressing assembly. A quality inspection module is located at the end of the discharge assembly and is used to perform weight detection on the packaged finished products and remove unqualified products.

[0010] As a further configuration of the above scheme, the quality inspection module includes a measuring component and a Y-shaped rotating plate. The Y-shaped rotating plate is suspended above the measuring component and is electrically connected to a control module of the measuring component. The measuring component is used to detect the weight of the finished packaged product, and the measurement result is fed back to the driving unit of the Y-shaped rotating plate, thereby driving the Y-shaped rotating plate to rotate forward and reverse to sweep the finished packaged product into a qualified warehouse or a defective warehouse.

[0011] As a further configuration of the above scheme, two heat pressing wheels are provided to rotate relative to each other, and the two heat pressing wheels rotate synchronously. Heat generating elements are provided on the circumferences of the two heat pressing wheels, and notches are left on the relative circumferences of the heat generating elements.

[0012] As a further configuration of the above scheme, the vacuum pump is connected to two air suction bag openers, and the two air suction bag openers are respectively located on both sides of the packaging bag. There is also an air pipe head with a telescopic cylinder on the side at the same horizontal height relative to the air suction bag opener. The air pipe head is driven by the telescopic cylinder to extend or move away from the packaging bag.

[0013] As a further configuration of the above scheme, two groups of hot pressing plates are provided, one group of hot pressing plates is located above the air suction bag opener to provide sealing operation for the bottom of the packaging bag, and the other group of hot pressing plates is located below the air suction bag opener to provide sealing operation for the mouth of the packaging bag.

[0014] As a further configuration of the above scheme, the feeding assembly includes a material bin, a material dividing plate and a material guiding pipe. The upper end opening of the material bin is connected to the cutting and dividing mechanism of the previous process. The material dividing plate is provided with a rotating motor and a rotating plate fixedly connected to the main shaft of the rotating motor. A number of material cups are evenly distributed on the circumference of the rotating plate. The material cups are arranged opposite to the material drop opening at the bottom of the material bin. The bottom of the material cups is open. A cup bottom piece fixed relative to the rotating plate is also provided on the rotating plate. The cup bottom piece is provided with a material drop groove relative to the material guiding pipe. The front end of the material guiding pipe extends to the opening above the hot pressing plate.

[0015] As a further configuration of the above scheme, the cutting knife assembly includes a relatively movable movable blade and a stationary blade, the movable blade is provided with a driving cam 1 and a driving cam 2, the driving cam 1 is used to drive the pressure plates arranged on both sides of the movable blade to clamp the packaging bag, the driving cam 2 is used to drive the movable blade to move, and the movable blade is arranged opposite to the incision left between two adjacent pressure plates.

[0016] The present invention also includes a packaging method of an automated food packaging machine, comprising the following packaging steps:

[0017] S1: Place enough raw material film for packaging bags on the film roll of the film supply assembly in advance, then wind the front end of the raw material film around the film feeding shaft, and ensure that the slitting and material separation mechanism of the previous process, whose end is located at the opening above the silo, operates normally to cut the packaging materials and feed the materials;

[0018] S1: After the equipment is started, the raw film is rolled out from the film roll, passes through all the film delivery shafts, enters the film roll assembly, and gradually changes from a flat sheet to a cylindrical shape through the film guide ring and the film pressing plate;

[0019] S2: After the two long sides of the raw film guided by the film guide ring and the film pressing plate are attached together, they are located exactly between the two hot pressing wheels. After entering between the hot pressing wheels, they are heated by the heating elements on the circumference of the hot pressing wheels and rolled by the hot pressing wheels, so that they are bonded together to form a cylindrical shape. The notch groove of the heating element arranged on the circumference leaves a cylindrical radial opening on the semi-finished packaging bag;

[0020] S3: The semi-finished packaging bag with the air outlet in a cylindrical shape continues to move downward, and at the same time, the hot pressing plate located below the hot pressing wheel moves to radially hot-press and bond the semi-finished packaging bag in the cylindrical shape to close the bottom opening;

[0021] S4: At the same time as step S3, the cutting and dividing mechanism of the previous process continuously feeds materials into the silo, and the packaging materials fall into the material cups one by one based on the rotating dividing plate, and the rotating dividing plate delivers them to the material guide pipe one by one. A material drop trough is set at the material guide pipe based on the cup bottom piece. When the packaging materials are delivered to the material guide pipe by the material cup, they lose the support of the bottom and naturally fall into the material guide pipe;

[0022] S5: The guide tube is arranged above the first hot pressing plate. At this time, the bottom opening of the semi-finished product packaging bag is closed. At this time, the packaging material falls into the guide tube and slides along the guide tube into the semi-finished product packaging bag to complete the packaging and unloading.

[0023] S6: In step S5, the semi-finished packaging bag containing the packaging material continues to move downward. When the semi-finished packaging bag moves to the air suction bag opener below near the air port at the upper end opening, the air suction bag opener sucks the membranes on both sides of the air port of the semi-finished packaging bag and expands the air port. Then, the air pipe head extends into the air port based on the telescopic cylinder, and the vacuum pump is started to extract the air in the bag body.

[0024] S7: before the vacuum pump stops pumping air, the second set of hot pressing plates arranged below the air pipe head moves to seal the packaging bag in the vacuum state to form a packaging structure with air extracted;

[0025] S8: After the hot pressing plate moves, the air pipe head retracts, and the sealed packaging bag continues to move downward. When it reaches the cutting knife assembly, the pressing plate driven by the driving cam 1 clamps the cutting edge of the packaging bag up and down relative to the moving blade first, and then the driving cam 2 drives the moving blade to move relative to the static blade, and extends into the incision left between the two adjacent pressing plates on the same side to cut or cut the packaging bag;

[0026] S9: The finished packaging bags after cutting fall onto the conveyor belt of the discharging component with their own weight, and are then transferred to the measuring component tray of the quality inspection module. The control module of the measuring component quickly obtains the weight of the finished packaging bags, and then sends a command to the drive unit of the Y-shaped rotating plate to control it to rotate forward or reverse, and sweep the finished packaging bags into the qualified bin or the defective bin through forward and reverse rotation.

[0027] As a further configuration of the above scheme, when the air outlet of the semi-finished packaging bag in step S8 moves to the air suction bag opener below, step S8 of the equipment is also sealing the bottom of the next packaging bag.

[0028] Beneficial effects: The automated food packaging machinery and equipment of the present invention has at least the following characteristics compared to the prior art:

[0029] 1. By setting up the vertical roll film packaging method, the entire packaging process is uninterrupted, and there is no need for manual or mechanical arm loading and unloading, which reduces the number of matching components and reduces the size of the equipment. The entire packaging process is based on the roll film shaft rolling out and unloading according to the weight of the uncut material. According to actual needs and equipment application, the setting of some film pulling and feeding components can be further reduced;

[0030] 2. The packaging bag is then sealed on the side by a hot pressing wheel, and a notch is left to form an air port. An exhaust device is set up to extract the air in contact with the packaged goods in the bag through the air port, thereby reducing the air content in the bag, forming a relatively sealed space, and extending the storage period.

[0031] The equipment and method of the present invention can perform rapid and continuous vacuum packaging, which is suitable for packaging and processing of ready-to-eat snacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the automated food packaging machinery and equipment of the present invention.

[0033] Figure 2 It is a schematic diagram of the film supply assembly and the film roll assembly of the present invention.

[0034] Figure 3 It is a schematic diagram of the feeding assembly of the present invention.

[0035] Figure 4 It is a schematic structural diagram of the material distribution tray of the present invention.

[0036] Figure 5 It is a schematic structural diagram of the packaging unit of the present invention.

[0037] Figure 6 The packaging process of the packaging part of the present invention is a partial structural diagram ( Figure 6 a. Figure 6 c is a comparison diagram of the state changes before and after the vacuum process; Figure 6 b. Figure 6 d is a comparison diagram of the waste removed after cutting).

[0038] Figure numerals: 1, equipment table; 2, packaging unit; 21, film supply assembly; 211, film roll drum; 212, film delivery shaft; 22, film roll assembly; 221, film guide ring; 222, film pressing plate; 23, hot pressing assembly; 231, hot pressing wheel; 2311, heating element; 2312, notch groove; 232, hot pressing plate; 24, material supply assembly; 241, material bin; 2411, material drop port; 242, material distribution plate; 2421, rotating motor; 2422, rotating plate; 2423, material cup; 242 4. Cup bottom; 2425. Blanking chute; 243. Material guide tube; 25. Cutter assembly; 251. Moving blade; 252. Stationary blade; 253. Driving cam 1; 254. Driving cam 2; 255. Pressing plate; 256. Incision; 26. Discharging assembly; 271. Air suction bag opener; 272. Air pipe head; 3. Power unit; 4. Quality inspection module; 41. Measuring assembly; 42. Y-shaped rotating plate; 43. Qualified bin; 44. Defective bin; 8. Air port; 81. Film bag waste; 9. Packaging. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0040] like Figure 1-6 The automatic food packaging mechanical equipment shown in the figure comprises a packaging part 2 for bagging, evacuating and sealing the packaged goods and a power part 3 for providing driving force for the packaging part 2 and having a built-in evacuation device; the packaging part 2 comprises a film supply component 21, a film roll component 22, a plurality of hot pressing components 23 and a material supply component 24; the power part 3 comprises an evacuation pump and a motor group, wherein the evacuation pump is used to evacuate the semi-enclosed packaging bag, and the motor group is used to provide power for the film supply component 21, the film roll component 22, a plurality of hot pressing components 23 and the material supply component 24; the film supply component Component 21 includes a film roll drum 211 and a film feeding shaft 212. The end of the film supply component 21 is connected to the film roll component 22. The feed end of the film roll component 22 is provided with a film guide ring 221 and a film pressing plate 222. The hot pressing component 23 includes a hot pressing wheel 231 located on the side of the film roll component 22 and a hot pressing plate 232 located directly below the film roll component 22. A cutting knife component 25 and a discharge component 26 are also provided below the hot pressing component 23; a quality inspection module 4, which is located at the end of the discharge component 26 and is used to perform weight detection on the packaged finished products and eliminate unqualified products.

[0041] As a further configuration of the above scheme, the quality inspection module 4 includes a measuring component 41 and a Y-shaped rotating plate 42. The Y-shaped rotating plate 42 is suspended above the measuring component 41 and is electrically connected to a control module of the measuring component (41). The measuring component 41 is used to detect the weight of the packaged product, and by feeding back the measurement result to the driving unit of the Y-shaped rotating plate 42, the Y-shaped rotating plate 42 is driven to rotate forward and reverse to sweep the packaged product into the qualified bin 43 or the defective bin 44.

[0042] As a further configuration of the above scheme, two heat pressing wheels 231 are provided to rotate relative to each other, and the two heat pressing wheels 231 rotate synchronously. Heat generating elements 2311 are provided on the circumference of the two heat pressing wheels 231 , and notches 2312 are left on the relative circumferences of the heat generating elements 2311 .

[0043] As a further configuration of the above scheme, the vacuum pump is connected to two air suction bag openers 271, and the two air suction bag openers 271 are respectively located on both sides of the packaging bag, and there is also an air pipe head 272 with a telescopic cylinder on the side at the same horizontal height relative to the air suction bag opener 271. The air pipe head 272 is driven by the telescopic cylinder to extend or move away from the packaging bag. The hot press plates 232 are provided with two groups, one group of the hot press plates 232 is located above the air suction bag opener 271 and is used to provide a sealing operation for the bottom of the packaging bag, and the other group of the hot press plates 232 is located below the air suction bag opener 271 and is used to provide a sealing operation for the mouth of the packaging bag.

[0044] As a further configuration of the above scheme, the feeding assembly 24 includes a material bin 241, a material dividing plate 242 and a material guiding pipe 243. The upper end opening of the material bin 241 is connected to the slitting and dividing mechanism of the previous process. The material dividing plate 242 is provided with a rotating motor 2421 and a rotating plate 2422 fixedly connected to the main shaft of the rotating motor 2421. A plurality of material cups 2423 are evenly distributed on the circumference of the rotating plate 2422. The material cups 2423 are arranged opposite to the material drop opening 2411 at the bottom of the material bin 241. The bottom of the material cups 2423 is open. The rotating plate 2422 is also provided with a cup bottom piece 2424 fixed relative to the rotating plate 2422. The cup bottom piece 2424 is provided with a material drop groove 2425 relative to the material guiding pipe 243. The front end of the material guiding pipe 243 extends to an opening above the hot pressing plate 232.

[0045] As a further configuration of the above scheme, the cutting knife assembly 25 includes a relatively movable movable blade 251 and a stationary blade 252. The movable blade 251 is provided with a driving cam 1 253 and a driving cam 2 254. The driving cam 1 253 is used to drive the pressure plates 255 arranged on both sides of the movable blade 251 to clamp the packaging bag. The driving cam 2 254 is used to drive the movable blade 251 to move, and the movable blade 251 is arranged opposite to the incision 256 left between two adjacent pressure plates 255.

[0046] As described above, the method for using and operating the automated food packaging machinery and equipment of the present invention also includes the following packaging processing steps. It is worth noting that the packaging bags of the packaging machinery and equipment of this embodiment are conveyed vertically downward. During the conveying process, multiple processing process components in the vertical direction cooperate with each other to process multiple bags at the same time. Therefore, in many steps, multiple components will be in effect at the same time. In this embodiment, the processing and packaging process of one bag is mainly demonstrated by taking an example as follows:

[0047] S1: At the initial start-up of the equipment of the present invention, the staff needs to manually place enough raw material film for packaging bag on the film roll drum 211 of the film supply assembly 21, and wind the front end of the raw material film around the film supply shaft 212 and put it into the film roll assembly 22. The front end must be clamped by the hot pressing wheel 231, and ensure that the cutting and dividing mechanism of the previous process at the end located above the opening of the silo 241 operates normally to cut the packaging materials and feed the materials. Step S1 is mainly to perform preparatory operations and confirm the feeding of materials. After completing step S1, the equipment starts to carry out the automated packaging processing technology;

[0048] S2: After the equipment is started, the raw material film is continuously rolled out from the film roll drum 211, and after passing through all the film delivery shafts 212, it enters the film roll assembly 22. At this time, the raw material film is still in a thin plane state. However, after entering the film roll assembly 22 and being guided by the film guide ring 221 and the film pressing plate 222, the film guide ring 221 and the film pressing plate 222 with a flared mouth will gradually transition the raw material film from a plane to a cylindrical shape with both sides closed to one side, and heat-press it on the closed boundary, as follows;

[0049] S3: After the raw material film is guided by the film guide ring 221 and the film pressing plate 222, the two long sides of the raw material film are attached and closed together, and the closed edges of the raw material film are just located between the two hot pressing wheels 231. As the hot pressing wheels 231 roll, the raw material film is continuously delivered downward. Based on the heating element 2311 on the circumference of the hot pressing wheel 231 heating the raw material film during the rolling process of the hot pressing wheel 231 and the pressure applied to the middle by the hot pressing wheels 231 on both sides (the minimum distance between the hot pressing wheels 231 on both sides should be slightly smaller than the thickness of the two layers of raw material film), the gaps of the cylindrical raw material film are bonded together to form a complete long cylinder, and based on the circular The notch groove 2312 of the heating element 2311 arranged around the periphery is arranged so that a cylindrical radial opening air port 8 is left on the cylindrical semi-finished packaging bag. It is worth noting that the raw material film basically maintains an annular structure on the circumference at this time, except that the air port 8 has become a tubular packaging bag on the circumference, and the size of the hot pressing wheel 231 rolling one circle is designed based on the size of each packaging bag. The circumference of the hot pressing wheel 231 is equal to the length of a packaging bag and the film bag waste 81 that needs to be cut off in the subsequent process, and the subsequent packaging processing steps and actions of various components are all adapted and adjusted based on the size of the hot pressing wheel 231;

[0050] S4: The semi-finished packaging bag with the air port 8 in a cylindrical shape continues to move downward, and after being processed by the hot pressing wheel 231, the packaging bag in a long tube shape continues to move downward, and is then processed by the hot pressing plate 232 that performs hot pressing radially toward the middle position, and the semi-finished packaging bag in a cylindrical shape is radially hot-pressed and bonded to close its bottom opening, so that the long tube-shaped packaging bag has a sealing strip in the radial direction, which can also be regarded as the bottom seal of the finished packaging bag;

[0051] S5: In the method of this embodiment, at the same time as step S4, the slitting and dividing mechanism of the previous process continuously feeds materials into the silo 241, and the packaging materials fall into the material cups 2423 one by one based on the rotating dividing plate 242. The rotating dividing plate 242 delivers the materials to the material guide pipe 243 one by one. The cup bottom 2424 is located at the material guide pipe 243 to set a material drop chute 2425. When the packaging materials are delivered to the material guide pipe 243 by the material cups 2423, they lose the support of the bottom and naturally fall into the material guide pipe 243;

[0052] S6: It is worth noting that the final actions of steps S4 and S5 of this embodiment are completed in sequence. The guide tube 243 of this embodiment extends from above the hot pressing wheel 231 into the cylindrical raw material film whose side opening has not been closed by the hot pressing wheel 231, and extends to a position slightly above the first hot pressing plate 232. After the first hot pressing plate 232 completes its work, that is, after the bottom opening of the semi-finished packaging bag is closed, the packaging material just rolls into the guide tube 243 and slides along the guide tube 243 into the semi-finished packaging bag, thereby completing the packaging and discharging of the packaging material 9;

[0053] S7: Further in step S6, the semi-finished packaging bag containing the packaging material 9 continues to move downward (the bag body with the packaging material 9 itself has a certain downward pulling force due to gravity), and when the semi-finished packaging bag is close to the air port 8 at the upper opening, that is, the air port 8 of the bag body with the packaging material 9, moves to the air suction bag opener 271, the air suction bag opener 271 will absorb the raw material film on both sides of the air port 8 based on the design of the air suction cup, and after sucking the film sheets on both sides of the air port 8 of the semi-finished packaging bag, the small cylinder of the air suction bag opener 271 retracts, simulating The air port 8 is pulled to both sides for expansion by human hands, and then the tracheal head 272 facing the middle of the air port 8 is driven by the telescopic cylinder to extend into the air port 8, and after the extension, the vacuum pump is started to extract the air in the bag through the tracheal head 272. It is worth noting that the front end of the tracheal head 272 is provided with a small head, and the end of the tracheal head 272 is opened on the lower side. The end of the tracheal head 272 is also provided with a tapered bag-supporting component, and the rear end extends out when the tracheal head 272 is extended, so as to support and block the gap between the air port 8 and the tracheal head 272 after the tracheal head 272 is connected, which is slightly larger than the diameter of the tracheal head 272.

[0054] S8: It is worth noting that according to the pre-calculated program setting, after the vacuum pump has been running for a certain period of time, the air inside the bag is basically evacuated. At this time, the vacuum pump is still working and continues to evacuate some air entering from the outside. At the same time, before the vacuum pump stops evacuating the air inside the bag from the trachea head 272, the second group of hot pressing plates 232 arranged below the trachea head 272 starts to work. After the second group of hot pressing plates 232 are started, the packaging bag in the evacuated state is sealed to form a packaging structure with evacuated air. At this time, the bag body is connected to the bottom of the next bag body, and the bag mouth and bag bottom of the current bag body are sealed, and a film bag waste 81 with an air port 8 is left between the two;

[0055] S9: After the hot pressing plate 232 is completed, the air pipe head 272 retracts, and the sealed packaging bag continues to move downward. When the product in step S8 moves downward and reaches the cutter assembly 25, the cutter assembly 25 moves to cut the packaging bag. The action includes the pressing plate 255 driven by the driving cam 253 clamping the cutting edge of the packaging bag up and down relative to the moving blade 251 first, as shown in FIG. Figure 6The present embodiment has four pressing plates, which are synchronously operated and driven by a coaxially arranged driving cam 1 253 to clamp the bag body toward the other side. Subsequently, the slow pressing plate 255 moves in one step, and the two driving cams 254 drive the moving blade 251 to move in the same direction and approach the static blade 252. During the movement, the moving blade 251 is extended and retracted by the cut 256 left between the two adjacent pressing plates 255 to cut or trim the packaging bag pressed by the two groups of pressing plates 255, separate the packaging bag from the film bag waste 81, and cut the packaging bag from the next bag body (due to the viewing angle, the cutting knife assembly 25 is not visible on the front of the device, and the specific structural principle is shown in FIG. Figure 6 Side schematic structure view of the device);

[0056] S10: The finished packaging bags after cutting are no longer lifted or suspended. They will fall onto the discharging component 26 with their own weight and roll onto the conveyor belt along the guide track. Because only one bag falls each time, the conveyor belt will continue to work and transmit them one by one to the tray of the measuring component 41 of the quality inspection module 4. The control module of the measuring component 41 quickly obtains the weight of the finished packaging bags (the weight is preset to a range, and non-multiples greater or less than the weight are defective. The multiples are due to possible jams in the transmission process, resulting in multiple bags arriving at a time. Inconsistent thresholds may be caused by problems such as empty bag sealing, insufficient packaging material 9, or program errors). Then a command is sent to the drive unit of the Y-shaped rotating plate 42 to control it to rotate forward or reverse, and the finished packaging bags are swept into the qualified bin 43 or the defective bin 44 through forward and reverse rotation.

[0057] Furthermore, when the air port 8 of the semi-finished packaging bag in step S7 moves to the lower air suction bag opener 271, step S4 of the equipment is also sealing the bottom of the next packaging bag.

[0058] It is worth noting that Figure 6 As shown, Figure 6 a is a schematic diagram of the structure of the present embodiment during the air extraction process, and Figure 6 c. As described in step 8, when the air extraction is completed but the air extraction action has not stopped, the bag should be sealed immediately so that the air in the sealed bag is minimal. It is worth noting that the basis for judging the completion of air extraction is: 1. The air pressure gauge can be set to trigger the action of the hot press plate 232 when the air pipe head 272 does not inhale enough air (there is no air available for inhalation in the bag, and the air leakage from the air pipe head 272 into the air port 8 is negligible); 2. The maximum air volume in the bag and the air extraction rate of the air pipe head 272 can also be calculated to calculate the required air extraction time, and the hot press plate 232 can be started after the air extraction countdown is completed; and Figure 6 b and Figure 6 d is a schematic diagram of cutting off the film bag waste 81 by the cutter assembly 25 after the bag body is closed.

[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automated food packaging machine, characterized in that: include: The equipment platform (1) comprises a packaging part (2) for bagging, degassing and sealing the packaged goods, and a power part (3) for providing driving force for the packaging part (2) and having a built-in degassing device; The packaging unit (2) comprises a film supply component (21), a film roll component (22), a plurality of heat pressing components (23) and a material supply component (24); The power unit (3) comprises an air pump and a motor group, wherein the air pump is used to evacuate air from the semi-enclosed packaging bag, and the motor group is used to provide power for the film supply component (21), the film roll component (22), a plurality of hot pressing components (23) and the material supply component (24); The film supply assembly (21) comprises a film roll drum (211) and a film delivery shaft (212); the end of the film supply assembly (21) is connected to the film roll assembly (22); the feed end of the film roll assembly (22) is provided with a film guide ring (221) and a film pressing plate (222); the hot pressing assembly (23) comprises a hot pressing wheel (231) located on the side of the film roll assembly (22) and a hot pressing plate (232) located directly below the film roll assembly (22); a cutting knife assembly (25) and a discharge assembly (26) are also provided below the hot pressing assembly (23); A quality inspection module (4), the quality inspection module (4) is located at the end of the discharging component (26), and is used to perform weight inspection on the packaged finished products and remove unqualified products.

2. The automatic food packaging machine according to claim 1, characterized in that: The quality inspection module (4) comprises a measuring component (41) and a Y-shaped rotating plate (42). The Y-shaped rotating plate (42) is suspended above the measuring component (41) and is electrically connected to a control module of the measuring component (41). The measuring component (41) is used to detect the weight of the packaged finished product and feed back the measurement result to a driving unit of the Y-shaped rotating plate (42), thereby driving the Y-shaped rotating plate (42) to rotate forward and reversely to sweep the packaged finished product into a qualified bin (43) or a defective bin (44).

3. The automatic food packaging machine according to claim 1, characterized in that: The two heat pressing wheels (231) are provided to rotate relative to each other, and the two heat pressing wheels (231) rotate synchronously. A heating element (2311) is provided on the circumference of the two heat pressing wheels (231), and a notch groove (2312) is left on the relative circumference of the heating element (2311).

4. The automatic food packaging machine according to claim 1, characterized in that: The vacuum pump is connected to two air suction bag openers (271), and the two air suction bag openers (271) are respectively located on both sides of the packaging bag. There is also an air pipe head (272) with a telescopic cylinder on the side at the same horizontal height relative to the air suction bag opener (271). The air pipe head (272) is driven by the telescopic cylinder to extend or move away from the packaging bag.

5. The automatic food packaging machine according to claim 4, characterized in that: The hot pressing plates (232) are provided in two groups, one group of the hot pressing plates (232) is located above the air suction bag opener (271) and is used to provide a sealing operation for the bottom of the packaging bag, and the other group of the hot pressing plates (232) is located below the air suction bag opener (271) and is used to provide a sealing operation for the mouth of the packaging bag.

6. The automatic food packaging machine according to claim 1, characterized in that: The material supply assembly (24) comprises a material bin (241), a material distribution plate (242) and a material guide pipe (243); the upper end opening of the material bin (241) is connected to the cutting and distributing mechanism of the previous process; the material distribution plate (242) is provided with a rotating motor (2421) and a rotating plate (2422) fixedly connected to the main shaft of the rotating motor (2421); a plurality of material cups (2423) are evenly distributed on the circumference of the rotating plate (2422); The material cup (2423) is arranged opposite to the material discharge port (2411) at the bottom of the material bin (241), and the bottom of the material cup (2423) is open. A cup bottom piece (2424) fixed relative to the rotating disk (2422) is also arranged on the rotating disk (2422), and the cup bottom piece (2424) is provided with a material discharge groove (2425) relative to the material guide tube (243), and the front end of the material guide tube (243) extends to the opening above the hot pressing plate (232).

7. The automatic food packaging machine according to claim 1, characterized in that: The cutting blade assembly (25) comprises a relatively movable moving blade (251) and a stationary blade (252); the moving blade (251) is provided with a first driving cam (253) and a second driving cam (254); the first driving cam (253) is used to drive pressure plates (255) arranged on both sides of the moving blade (251) to clamp the packaging bag; the second driving cam (254) is used to drive the moving blade (251) to move; and the moving blade (251) is arranged opposite to a cutout (256) left between two adjacent pressure plates (255).

8. An automated food packaging machine packaging method, characterized in that: The packaging steps include: S1: placing enough raw material film for packaging bags on the film roll drum (211) of the film supply assembly (21) in advance, then winding the front end of the raw material film around the film feeding shaft (212), and ensuring that the slitting and feeding mechanism of the previous process whose end is located above the opening of the silo (241) operates normally to slitting and feeding the packaging materials; S2: After the equipment is started, the raw film is rolled out from the film roll drum (211), passes through all the film delivery shafts (212), enters the film roll assembly (22), and gradually changes from a flat sheet to a cylindrical shape through the film guide ring (221) and the film pressing plate (222); S3: After being guided by the film guide ring (221) and the film pressing plate (222), the two long sides of the raw material film are attached together and are located exactly between the two hot pressing wheels (231). After entering between the hot pressing wheels (231), they are heated by the heating element (2311) on the circumference of the hot pressing wheel (231) and pressed by the hot pressing wheel (231), so that they are bonded together to form a cylindrical shape, and the notch groove (2312) of the heating element (2311) arranged on the circumference leaves a cylindrical radial opening air port (8) on the cylindrical semi-finished packaging bag; S4: the semi-finished product packaging bag with the air port (8) in a cylindrical shape continues to move downward, and at the same time, the hot pressing plate (232) located below the hot pressing wheel (231) moves to radially hot-press and bond the semi-finished product packaging bag in a cylindrical shape to close the bottom opening; S5: At the same time as step S4, the cutting and dividing mechanism of the previous process continuously feeds materials into the material bin (241), and the packaging materials fall into the material cups (2423) based on the rotating material dividing plate (242). The rotating material dividing plate (242) delivers the materials to the material guide pipe (243) one by one. The cup bottom piece (2424) is located at the material guide pipe (243) and a material drop chute (2425) is provided. When the packaging materials are delivered to the material guide pipe (243) by the material cup (2423), they lose the support of the bottom and naturally fall into the material guide pipe (243); S6: The material guide tube (243) is arranged above the first hot pressing plate (232). At this time, the bottom opening of the semi-finished packaging bag is completely closed. At this time, the packaging material falls into the material guide tube (243) and slides along the material guide tube (243) into the semi-finished packaging bag to complete the packaging and discharging; S7: In step S6, the semi-finished packaging bag containing the packaging material continues to move downward. When the semi-finished packaging bag moves to the lower air suction bag opener (271) near the air port (8) at the upper end opening, the air suction bag opener (271) sucks the membranes on both sides of the air port (8) of the semi-finished packaging bag and expands the air port (8). Then, the air pipe head (272) extends into the air port (8) based on the telescopic cylinder, and the vacuum pump is started to extract the air in the bag; S8: before the vacuum pump stops vacuuming, the second set of hot pressing plates (232) disposed below the air pipe head (272) is activated to seal the packaging bag in the vacuum state, thereby forming a packaging structure from which air has been vacuumed; S9: After the hot pressing plate (232) has completed its movement, the air pipe head (272) retracts, and the sealed packaging bag continues to move downward. When it reaches the cutting knife assembly (25), the pressing plate (255) driven by the driving cam 1 (253) first clamps the cutting edge of the packaging bag up and down relative to the moving blade (251), and then the driving cam 2 (254) drives the moving blade (251) to move relative to the stationary blade (252), and extends into the cut (256) left between two adjacent pressing plates (255) on the same side to cut or cut the packaging bag; S10: The finished packaging bags after cutting fall onto the conveyor belt of the discharging component (26) with their own weight, and are then transferred to the tray of the measuring component (41) of the quality inspection module (4). The control module of the measuring component (41) quickly obtains the weight of the finished packaging bags, and then sends a command to the driving unit of the Y-shaped rotating plate (42) to control it to rotate forward or reverse, and the finished packaging bags are swept into the qualified bin (43) or the defective bin (44) through the forward and reverse rotation.

9. The packaging method of an automated food packaging machine according to claim 8, characterized in that: When the air outlet (8) of the semi-finished packaging bag in step S7 moves to the lower air suction bag opener (271), the equipment is also performing step S4 to seal the bottom of the next packaging bag.

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