A pre-made bag fill metering combined vacuum packaging machine

Abstract

The application discloses a preformed bag filling and metering combined vacuum packaging machine, which comprises a filling and metering assembly and a vacuum sealing assembly, wherein the filling and metering assembly adopts a horizontal linear structure, and the vacuum sealing assembly adopts a rotary step-by-step vacuum partial sealing structure; the filling and metering assembly adopts a horizontal linear structure, and the vacuum sealing assembly adopts a rotary step-by-step vacuum partial sealing structure, and comprises a simple vacuum sealing part and a rotary step-by-step vacuum sealing part; the filling and metering assembly and the vacuum sealing assembly can work independently or cooperatively as required; when only the filling and metering assembly of the packaging machine is started, normal filling and metering packaging can be completed, and multi-segment filling mode can be realized in the filling stage; when the filling and metering assembly and the vacuum sealing assembly of the packaging machine are both started, simple vacuum sealing packaging or rotary step-by-step vacuum sealing packaging can be completed, and different vacuum degrees can be set according to requirements for carrying out sealing packaging with different vacuum degrees.

Description

Technical Field

[0001] This invention relates to the field of packaging and machinery technology, and in particular to a pre-made bag filling and metering composite vacuum packaging machine. Background Technology

[0002] A packaging machine is a type of mechanical equipment primarily used for packaging products or goods. It places products into pre-made bags or other packaging materials and completes the packaging process through a series of steps, such as filling, wrapping, and sealing. The main function of a packaging machine is to protect products from damage or contamination, while also improving their appearance and increasing their appeal.

[0003] Most existing pre-made bag packaging machines can only perform general operations such as filling, metering, and sealing, and cannot perform vacuum packaging of pre-made bags. A very few packaging machines can perform vacuum packaging, but only simple vacuum packaging, abandoning the original function of ordinary packaging. Moreover, their sealing form is limited and cannot selectively execute different packaging forms according to actual needs. Summary of the Invention

[0004] Therefore, one object of the present invention is to provide a pre-filled bag filling metering composite vacuum packaging machine to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pre-made bag filling and metering composite vacuum packaging machine includes: a filling and metering component and a vacuum sealing component. The filling and metering component adopts a horizontal linear structure and includes, in sequence according to the bag filling and metering processing order, a moving bag opening device, a bag picking device, an inflation bag opening device, a lower bag opening device, a filling device, a bag holding device, a bag transferring device, a closing and flattening device, a heat sealing device, a push rod device, and a cooling device. The heat sealing device and the cooling device are each equipped with a simple vacuum device, namely a first simple vacuum device and a second simple vacuum device, respectively. The vacuum sealing component adopts a rotary step-by-step vacuum sealing structure. The vacuum sealing assembly includes a simple vacuum sealing section and a rotary step-by-step vacuum sealing section. The simple vacuum sealing section includes a first simple vacuum device and a second simple vacuum device. The rotary step-by-step vacuum sealing section includes a transfer device, a rotary vacuum sealing device, and a shaping conveyor arranged sequentially. The bag-picking device picks up the packaging bag and moves it to a first preset position. The moving bag-opening device opens the packaging bag picked up by the bag-picking device and then moves the packaging bag to a second preset position, where it connects with the inflation bag-opening device and the lower bag-opening device. The lower bag-opening device picks up the packaging bag, and the inflation bag-opening device opens the packaging bag... After the bag is expanded and opened, it is moved to the third preset position. The bag holding device picks up the bag and moves it to the fourth preset position. The filling device fills the bag with the metered material. The filled bag is then moved to the fifth preset position. The closing and flattening device flattens the bag opening. After flattening, the bag is sealed by a heat sealing device. Sealing includes complete sealing and incomplete sewing. If the packaging machine is set to perform normal filling and metering packaging, the heat sealing device performs complete sealing. Afterward, the bag is moved to the sixth preset position and cooled by a cooling device. Cooling is performed; if the packaging machine is set to perform simple vacuum sealing packaging, the heat sealing device performs incomplete sealing packaging, and then the packaging bag is sequentially passed through the first simple vacuum device, the second simple vacuum device for a first-stage simple vacuum operation and a second-stage simple vacuum operation, and then cooled by the cooling device; if the packaging machine is set to perform rotary step-by-step vacuum sealing packaging, the heat sealing device performs incomplete sealing packaging, and then the pusher device pushes the packaging bag to the transfer device, the transfer device transfers the packaging bag one bag at a time to the rotary vacuum sealing device, the rotary vacuum sealing device performs multi-stage vacuum extraction on the packaging bag, and then the packaging bag is sent to the shaping conveyor.

[0007] Preferably, the bag-retrieving device includes a bag box and a cam linkage mechanism. The bag box has an outlet, and the outlet of the bag box is provided with an adsorption-release mechanism and a retrieving mechanism. The adsorption-release mechanism is connected to the retrieving mechanism. The cam linkage mechanism includes a pull rod and a cam. The pull rod includes a first pull rod and a second pull rod. The cam is a conjugate cam, which includes a first cam and a second cam. The first pull rod is connected to the first cam through a first rocker arm, and the second pull rod is connected to the second cam. A guide mechanism is provided on one side of the adsorption-release mechanism, and a bag-retrieving mechanism is provided on the guide mechanism. The bag-retrieving mechanism is connected to a telescopic mechanism.

[0008] Preferably, the filling metering assembly further includes a conjugate transmission device, which includes a first conjugate cam and a first vertical plate. The first vertical plate is connected to a second vertical plate, and the second vertical plate is connected to a first slide rod and a third pull rod. The first slide rod is connected to a fourth pull rod, and the third pull rod and the third pull rod are both connected to a first three-pronged connecting rod. The first three-pronged connecting rod is connected to a fifth pull rod, and the fifth pull rod is connected to a second rocker arm. The second rocker arm is connected to the first conjugate cam.

[0009] Preferably, the push rod device includes a main board and an extension cylinder. The upper part of the main board is provided with a push plate, the push plate is connected to a suction cup, the push plate is connected to a sixth pull rod, the sixth pull rod is connected to a tilting cylinder, one end of the main board is connected to a second slide rod, the second slide rod is fitted with a sliding sleeve, the second slide rod is connected to an extension cylinder, and the lower part of the main board is fixedly connected to a support plate.

[0010] Preferably, the simple vacuum sealing device includes a first packaging box, a second packaging box, and a third slide rod. The first packaging box and the second packaging box are arranged opposite to each other. The first packaging box has a front plate on one side, and the second packaging box has a rear plate on the opposite side. The third slide rod passes through the front plate, the first packaging box, the second packaging box, and the rear plate. The rear plate is connected to a clamping cylinder and a seventh pull rod on one side of the second packaging box. The third slide rod is connected to an eighth pull rod. Both the seventh and eighth pull rods are connected to a second three-pronged connecting rod. The second three-pronged connecting rod is connected to a ninth pull rod. The ninth pull rod is connected to a third rocker arm. The third rocker arm is connected to a second conjugate cam.

[0011] Preferably, the transfer device includes a chassis connected to a rotating shaft, the rotating shaft being vertically arranged, a protective shell located at the middle of the rotating shaft, a first gear located at the lower part of the rotating shaft, a positioning base located at the upper part of the rotating shaft, a second lifting assembly located inside the protective shell, the second lifting assembly being connected to a base support located outside the base, a side flattening assembly connected to the side of the positioning base, and an upper flattening assembly located above the positioning base.

[0012] Preferably, the rotary vacuum sealing device includes an outer cover, a box base, a main shaft, and a bottom base. The outer cover is movably connected to the box base and is connected to an arm. The box base is connected to a support plate. The arm and the support arms are all connected to the main shaft. A circumferential cam is provided on the bottom base, and a pressing shaft is connected to the circumferential cam. The pressing shaft passes through the support plate and is connected to the arm. The main shaft is inserted into the interior of the bottom base, and a second gear is provided inside the bottom base. The second gear is sleeved on the main shaft. A rotary joint, a bracket, and a conductive ring are provided in equal sections of the main shaft, and a vacuum port is provided above the conductive ring.

[0013] Preferably, the filling device for filling the metered material into the packaging bag specifically includes: the filling device comprising N metering hoppers, namely a first metering hopper, a second metering hopper, ..., an Nth metering hopper, the top of each metering hopper being connected to a main hopper, and the lower part of each metering hopper being designed with a settling opening device. After the packaging bag reaches the fourth preset position, the exhaust pipe descends while simultaneously inserting into the packaging bag to ensure a good opening. At this point, the metering hopper has weighed the material, and the first metering hopper opens its discharge flap according to the instruction. The material weighed in the first metering hopper is filled into the packaging bag through the chute hopper. Then the filling device operates, the first metering hopper leaves, and the second metering hopper arrives. The second metering hopper opens its discharge flap according to the instruction, and the material weighed in the second metering hopper is filled into the packaging bag through the chute hopper. Then the filling device operates, the second metering hopper leaves, and the third metering hopper arrives. ... The Nth metering hopper opens its discharge flap according to the instruction, and the material weighed in the Nth metering hopper is filled into the packaging bag through the chute hopper. The filling is then complete.

[0014] Preferably, the filling and metering component also includes a detection and sorting station. After the filling device fills the metered material into the packaging bag, the filled packaging bag is moved to the detection and sorting station for standard judgment. If the packaging bag is qualified, it is moved to the fifth preset position. If the packaging bag is unqualified, it falls at the detection and sorting station and slides out of the packaging machine through the chute.

[0015] Preferably, the system further includes a first electrical control box and a second electrical control box, wherein the first electrical control box is connected to the filling and metering assembly, and the second electrical control box is connected to the vacuum sealing assembly.

[0016] Therefore, the present invention has the following beneficial effects:

[0017] This invention discloses a pre-made bag filling and metering composite vacuum packaging machine. The overall structure can be divided into two parts: a filling and metering component and a vacuum sealing component. The filling and metering component adopts a horizontal linear structure, while the vacuum sealing component adopts a rotary step-by-step vacuum sealing structure, including a simple vacuum sealing section and a rotary step-by-step vacuum sealing section. The filling and metering component and the vacuum sealing component can work independently or in conjunction as needed. When only the filling and metering component is activated, ordinary filling and metering packaging can be completed, and multi-stage filling modes can be achieved during the filling stage. When both the filling and metering component and the vacuum sealing component are activated, simple vacuum sealing packaging or rotary step-by-step vacuum sealing packaging can be completed, and different vacuum levels can be set as needed for sealing packaging at different vacuum levels.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the overall structure of the pre-made bag filling and metering composite vacuum packaging machine of the present invention;

[0021] Figure 2 This is a schematic diagram of the conjugate transmission device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the bag-removing device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the push rod device structure according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the simplified vacuum sealing device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the transfer device structure according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the rotary vacuum sealing device according to an embodiment of the present invention.

[0027] In the diagram: 1. First electrical control box; 2. Mobile bag opening device; 3. Bag picking device; 4. Inflatable bag opening device; 5. Lower bag opening device; 6. Filling device; 7. Opening station; 8. Bag holding device; 9. Alignment station; 10. Bag transferring device; 11. Closing and flattening device; 12. Inspection and sorting station; 13. Simple sealing station; 14. Push rod device; 15. Cooling device; 16. Traction walking device; 17. Sorting and output device; 18. Power unit; 19. Simple vacuum device; 20. Transfer device; 21. Main hopper; 22. Safety guardrail; 23. Rotary vacuum sealing device; 24. Shaping conveyor; 25. Second electrical control box; 201. First upright plate; 202. Second upright plate; 203. First sliding rod; 204. Third pull rod; 205. Fourth pull rod; 206. First three-pronged connecting rod; 207. Fifth pull rod; 208. Second rocker arm; 209. First conjugate cam; 301. Bag box; 302. Packaging bag; 303. Adsorption and release mechanism; 304. Retrieval mechanism; 305. Bag retrieval mechanism; 306. Telescopic mechanism; 307. First rocker arm; 308. Second pull rod; 309. First cam; 310. Second cam; 311. First pull rod; 312. Gripper; 313. Guide mechanism; 401. Main board; 402. Push plate; 403. Suction cup; 4 04. Sixth pull rod; 405. Tilting cylinder; 406. Sliding sleeve; 407. Second slide rod; 408. Extension cylinder; 409. Support plate; 410. First lifting assembly; 411. Packaging clamp; 501. First packaging box; 502. First clamp; 503. Heating assembly; 504. Leveling assembly; 505. Vent valve; 506. Vacuum valve; 507. Rear plate; 508. Third slide rod; 509. Clamping cylinder; 510. Seventh pull rod; 511. Eighth pull rod; 512. Second three-way connecting rod; 513. Ninth pull rod; 514. Third rocker arm; 515. Second conjugate cam; 516. Front plate; 517. Second clamp. 518. Second packaging box; 601. Chassis; 602. Rotating shaft; 603. First gear; 604. Second lifting assembly; 605. Protective cover; 606. Base support; 608. Side flattening assembly; 609. Upper bag clamping assembly; 610. Upper flattening assembly; 611. Flattening cylinder; 612. Positioning base; 701. Outer cover; 702. Arm; 703. Vacuum port; 704. Rotary joint; 705. Bracket; 706. Conductive ring; 707. Air distribution cylinder; 708. Box base; 709. Pressing shaft; 710. Circumferential cam; 711. Second gear; 712. Main shaft; 713. Bottom base; 713. Support plate. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The present invention provides a pre-made bag filling and metering composite vacuum packaging machine, comprising: a filling and metering component and a vacuum sealing component.

[0030] The filling and metering assembly adopts a horizontal linear structure, including a movable bag opening device 2, a bag taking device 3, an air-filling bag opening device 4, a lower bag opening device 5, a filling device 6, a bag holding device 8, a bag transferring device 10, a closing and flattening device 11, a heat sealing device, a push rod device 14, and a cooling device 15 arranged in sequence according to the filling and metering processing order of the packaging bag 302. The heat sealing device and the cooling device 15 are each equipped with a simple vacuum device 19, which are respectively the first simple vacuum device and the second simple vacuum device.

[0031] The vacuum sealing assembly adopts a rotary step-by-step vacuum sealing structure. The vacuum sealing assembly includes a simple vacuum sealing section and a rotary step-by-step vacuum sealing section. The simple vacuum sealing section includes a first simple vacuum device and a second simple vacuum device. The rotary step-by-step vacuum sealing section includes a transfer device 20, a rotary vacuum sealing device 23 and a shaping conveyor 24 arranged in sequence.

[0032] The bag-taking device 3 picks up the packaging bag 302 and moves it to the first preset position. The bag-opening device 2 opens the packaging bag 302 picked up by the bag-taking device 3 and moves it to the second preset position, where it connects with the inflatable bag-opening device 4 and the lower bag-opening device 5. The lower bag-opening device 5 picks up the packaging bag 302. The inflatable bag-opening device 4 expands the opening inside the packaging bag 302 and moves it to the third preset position. The bag-holding device 8 picks up the packaging bag 302 and moves it to the fourth preset position. The filling device 6 fills the measured material into the packaging bag 302 and moves the filled packaging bag 302 to the fifth preset position. The closing and flattening device 11 flattens the opening of the packaging bag 302. After flattening the opening, the packaging bag 302 is sealed by a heat-sealing device. The sealed packaging includes complete sealed packaging and incomplete sewn packaging.

[0033] If the packaging machine is set to perform normal filling and metering packaging, the heat sealing device will completely seal the packaging, and then the packaging bag 302 will be moved to the sixth preset position and cooled by the cooling device 15.

[0034] If the packaging machine is set to perform simple vacuum sealing packaging, the heat sealing device will perform incomplete sealing packaging, and then the packaging will be performed in sequence through the first simple vacuum device and the second simple vacuum device for a first simple vacuum operation and a second simple vacuum operation, and then cooled by the cooling device 15.

[0035] If the packaging machine is set to perform rotary step-by-step vacuum sealing packaging, the heat sealing device performs incomplete sealing packaging. Then, the pusher device 14 pushes the packaging bag 302 to the transfer device 20. The transfer device 20 transfers the packaging bag 302 one bag at a time to the rotary vacuum sealing device 23. The rotary vacuum sealing device 23 performs multi-stage vacuum extraction on the packaging bag 302 and then sends the packaging bag 302 to the shaping conveyor 24.

[0036] This invention discloses a pre-made bag filling and metering composite vacuum packaging machine. The overall structure can be divided into two parts: a filling and metering component and a vacuum sealing component. The filling and metering component adopts a horizontal linear structure, while the vacuum sealing component adopts a rotary step-by-step vacuum sealing structure, including a simple vacuum sealing section and a rotary step-by-step vacuum sealing section. The filling and metering component and the vacuum sealing component can work independently or in conjunction as needed. When only the filling and metering component is activated, ordinary filling and metering packaging can be completed, and multi-stage filling modes can be achieved during the filling stage. When both the filling and metering component and the vacuum sealing component are activated, simple vacuum sealing packaging or rotary step-by-step vacuum sealing packaging can be completed, and different vacuum levels can be set as needed for sealing packaging at different vacuum levels.

[0037] Specifically, such as Figure 1 As shown, in one embodiment, a pre-made bag filling and metering composite vacuum packaging machine includes a first electrical control box 1, a moving bag opening device 2, a bag picking device 3, an inflation bag opening device 4, a lower bag opening device 5, a filling device 6, an opening station 7, a bag holding device 8, a calibration station 9, a bag transferring device 10, a closing and flattening device 11, a detection and sorting station 12, a simple sealing station 13, a push rod device 14, a cooling device 15, a traction walking device 16, a sorting and output device 17, a power device 18, a simple vacuum device 19, a transfer device 20, a main hopper 21, a safety guardrail 22, a rotary vacuum sealing device 23, a shaping conveyor 24, and a second electrical control box 25.

[0038] The overall structure of the present invention can be divided into two parts: filling and metering and vacuum sealing. The filling and metering part (assembly) and the vacuum sealing part (assembly) are connected by a power unit 18.

[0039] The filling and metering section adopts a horizontal linear structure, including a first electrical control box 1, a mobile bag opening device 2, a bag picking device 3, an inflation bag opening device 4, a lower bag opening device 5, a main hopper 21, a filling device 6, an opening station 7, a bag holding device 8, a calibration station 9, a bag moving device 10, a closing and flattening device 11, a detection and sorting station 12, a simple sealing station 13, a push rod device 14, a cooling device 15, a traction walking device 16, and a sorting and output device 17.

[0040] The vacuum sealing section adopts a rotary step-by-step vacuum sealing structure, including a simple vacuum device 19, a transfer device 20, a safety guardrail 22, a rotary vacuum sealing device 23, a shaping conveyor 24, and a second electrical control box 25.

[0041] The overall structure of the present invention can be configured to: 1) independently complete ordinary filling and metering packaging; 2) complete simple vacuum sealing packaging; 3) complete rotary step-by-step vacuum sealing packaging.

[0042] The overall structure of this invention is equipped with all control instruments, namely electrical control boxes, including a first electrical control box 1 and a second electrical control box 25. The first electrical control box 1 is the main electrical control box, and the second electrical control box 25 is the auxiliary electrical control box. The first electrical control box 1 and the second electrical control box 25 respectively control the filling and metering section and the vacuum sealing section. The transmission device is also divided into two parts. As needed, the main transmission can be started to operate the filling and metering section and the vacuum sealing section, i.e., to operate the entire set of equipment; or only the auxiliary transmission can be started to operate only the filling and metering section and the simple vacuum sealing section, without operating the rotary vacuum sealing packaging; or only the filling and metering section can be operated.

[0043] The filling and metering section of this invention adopts a horizontal straight line structure. It can be selected to use online filling and metering with one-stage filling-one-stage metering-two-stage filling-two-stage metering (or no metering), or it can use a multi-head filling method with fast metering-slow metering-filling, that is, pre-metering followed by filling.

[0044] The vacuum sealing section of this invention adopts a horizontal rotary structure. More specifically, it can be set to 6-12 stations as needed, and can be configured with different vacuum levels for sealing and packaging at different vacuum levels. After sealing and packaging, the packaged product is shaped, and the sealing quality is checked simultaneously.

[0045] The vacuum sealing part of the present invention includes a simple vacuum sealing part and a rotary step-by-step vacuum sealing part, that is, it is provided with two types of vacuum sealing. It can perform only simple vacuum packaging without standard rotary step-by-step vacuum packaging as needed; it can also perform standard rotary step-by-step vacuum sealing packaging without simple vacuum packaging; or it can perform both simple vacuum packaging and standard rotary step-by-step vacuum packaging.

[0046] The filling and metering section and the vacuum sealing section of the present invention are connected by a device for pushing and transferring packaging bags. The power unit 18 is equipped with a clutch, so that the filling and metering section and the vacuum sealing section can operate separately or in conjunction.

[0047] The filling and metering section of the present invention is provided with a detection and sorting station 12. Specifically, a weight detection device can be set up so that items that do not meet the weight requirements can be automatically rejected without sealing, and the packaging bag 302 can be reused. The filling and metering section can also be provided with a simple output shaping station, located before the sorting and output device 17, so that the packaged items can be simply shaped and the sealing can be checked.

[0048] Furthermore, such as Figure 3 As shown, the bag-retrieving device 3 of the present invention includes a bag box 301 and a cam linkage mechanism. The bag box 301 has an outlet, and the outlet of the bag box 301 is provided with an adsorption-release mechanism 303 and a retrieving mechanism 304. The adsorption-release mechanism 303 is connected to the retrieving mechanism 304. The cam linkage mechanism includes a pull rod and a cam. The pull rod includes a first pull rod 311 and a second pull rod 308. The cam is a conjugate cam, which includes a first cam 309 and a second cam 310. The first pull rod 311 is connected to the first cam 309 through a first rocker arm 307, and the second pull rod 308 is connected to the second cam 310. A guide mechanism 313 is provided on one side of the adsorption-release mechanism 303. A bag-retrieving mechanism 305 is provided on the guide mechanism 313. The bag-retrieving mechanism 305 is connected to a telescopic mechanism 306.

[0049] In one implementation, the first pull rod 311 and the first rocker arm 307 can be movably connected, specifically, they can be hinged.

[0050] Specifically, the bag box 301 contains several pre-made bags / packaging bags 302. The cylinder-driven telescopic mechanism 306 controls the movement of the bag-taking mechanism 305. The bag-taking mechanism 305 is equipped with a gripper 312, which can grip the packaging bag 302. The height of the bag box 301, the length, width, and front-back position of the space where the packaging bag 302 is stored in the bag box 301 are adjustable. The bag-taking mechanism 305 includes a photoelectric detection unit, a finger gripping cylinder, a slide bar, a support, an auxiliary plate, and other structures. It can detect the packaging bag 302 and drive the gripper to grip the packaging bag 302. The adsorption and release mechanism 303 includes a suction cup and a suction cup bracket. The retrieval mechanism 304 includes a lifting cylinder, an adjustment bracket, etc.

[0051] In the production process of pre-packaged bag machines, the first step is to provide packaging bags, and the speed at which these bags are provided directly affects the machine's production capacity. Early pre-packaged bag machines often used a horizontal method for bag picking and feeding. Typically, the packaging bags were laid out on a horizontal feeding table, with baffles on both sides holding them in place. The frontmost bag was held against the front baffle, and a suction cup picked up the topmost bag before feeding it to the gripper claws for automatic bag picking and feeding. Currently, various industries use different types of packaging machines with multiple bag picking or feeding methods: for example: 1. Top suction bag picking method: This method is simple, practical, and convenient, but requires stopping the machine to replenish bags. 2. Bottom belt conveyor bag picking method: This method involves a large machine mechanism, complex operation, and inconvenient positioning adjustments. 3. Bag box exchange method: This requires two bag boxes, one for backup and one for use. Exchanging bag boxes requires emergency operation or machine stoppage, affecting packaging continuity.

[0052] The bag-removing device 3 provided by the present invention solves the problem of inconvenient bag removal in existing packaging machines.

[0053] The bag-removing device 3 provided by this invention is implemented as follows:

[0054] Neatly stacked packaging bags 302 are placed inside the bag box 301. The retrieval mechanism 304 is activated, its lifting cylinder pushes upwards, simultaneously activating the suction and release mechanism 303. The negative pressure suction cup 403 of the suction and release mechanism 303 picks up a packaging bag 302 and retracts it. The telescopic mechanism 306, according to the program settings, extends, causing the bag-picking mechanism 305 to slide towards the packaging box. The open gripper 312 grasps a packaging bag 302 and retracts. The cam linkage mechanism descends, contacts the packaging bag 302, vacuum-adsorbs it, raises it, and flips it, stopping at a predetermined position, awaiting removal by the next bag-opening device. Then, the bag-picking device 3 continues the cycle to complete the bag-picking process.

[0055] The bag-retrieving device 3 of the present invention has a simple structure, compact composition, and reliable operation. It can replenish packaging bags 302 at any time without stopping the machine, ensuring continuous operation of the packaging operation.

[0056] The main action execution part of the packaging machine of this invention adopts a conjugate cam transmission device.

[0057] Furthermore, the filling metering assembly also includes a conjugate drive mechanism, such as... Figure 2As shown, the conjugate transmission device includes a first conjugate cam 209 and a first vertical plate 201. The first vertical plate 201 is connected to a second vertical plate 202. The second vertical plate 202 is connected to a first slide rod 203 and a third pull rod 204. The first slide rod 203 is connected to a fourth pull rod 205. The third pull rod 204 and the third pull rod 205 are both connected to a first three-pronged connecting rod 206. The first three-pronged connecting rod 206 is connected to a fifth pull rod 207. The fifth pull rod 207 is connected to a second rocker arm 208. The second rocker arm 208 is connected to the first conjugate cam 209.

[0058] In one implementation, the connection between the first slide bar 203 and the fourth pull bar 205 is a movable connection, specifically a hinged connection.

[0059] In one implementation, the connection between the fourth tie rod 205 and the first three-pronged connecting rod 206 is a movable connection, specifically a hinged connection.

[0060] In one implementation, the connection between the third tie rod 204 and the first three-pronged connecting rod 206 is a movable connection, specifically a hinged connection.

[0061] In one implementation, the connection between the first three-pronged connecting rod 206 and the fifth tie rod 207 is a movable connection, specifically a hinged connection.

[0062] Generally, cam motion relies on its own contour curve in conjunction with a tension spring. However, due to variations in motion resistance and other factors, the spring cannot achieve a definite movement. This leads to unstable mechanism motion and requires a certain spring preload, undoubtedly increasing power consumption. The conjugate transmission device of this invention utilizes the principle of conjugate mutual constraint, enabling highly stable mechanism operation. The main components of the packaging machine transmission in this invention employ a conjugate structure, with important parts using adjustable structures. Since long-term wear of the cam may reduce transmission accuracy, a rocker arm that can be tightened and adjusted is included.

[0063] Furthermore, such as Figure 4 As shown, the push rod device 14 includes a main board 401 and an extension cylinder 408. The upper part of the main board 401 is provided with a push plate 402, which is connected to a suction cup 403. The push plate 402 is connected to a sixth pull rod 404, which is connected to a tilting cylinder 405. One end of the main board 401 is connected to a second slide rod 407, which is fitted with a sliding sleeve 406. The second slide rod 407 is connected to the extension cylinder 408. The lower part of the main board 401 is fixedly connected to a support plate 409.

[0064] like Figure 4As shown, when the packaging bag 302 is at a certain workstation, it is in position A. According to the settings, it needs to be moved to position B. First, the extension cylinder 408 is activated, connecting to the second slide rod 407. Through the sliding sleeve 406, the push-clamp assembly, consisting of the main board 401, push plate 402, suction cup 403, sixth pull rod 404, and flip cylinder 405, along with the accompanying packaging bag 302, is moved to position B. Upon instruction, the flip cylinder 405 is activated, pushing the sixth pull rod 404, causing the pallet 409 to flip. Simultaneously, the negative pressure suction cup 403 is released, and the packaging bag 302 reaches position B. It is supported by the first lifting assembly 410 below and clamped by the packaging clamp 411 above. The packaging bag 302 completes its transfer, ready for the next step.

[0065] Furthermore, such as Figure 5 As shown, the simple vacuum sealing device includes a first packaging box 501, a second packaging box 518, and a third slide bar 508. The first packaging box 501 and the second packaging box 518 are arranged opposite each other. A front plate 516 is provided on one side of the first packaging box 501, and a rear plate 507 is provided on the opposite side of the second packaging box 518. The third slide bar 508 passes through the front plate 516, the first packaging box 501, the second packaging box 518, and the rear plate 507. A clamping cylinder 509 and a seventh pull rod 510 are connected to the side of the rear plate 507 away from the second packaging box 518. An eighth pull rod 511 is connected to the third slide bar 508. Both the seventh pull rod 510 and the eighth pull rod 511 are connected to a second three-pronged connecting rod 512. The second three-pronged connecting rod 512 is connected to a ninth pull rod 513. The ninth pull rod 513 is connected to a third rocker arm 514. The third rocker arm 514 is connected to a second conjugate cam 515.

[0066] The first packaging box 501 and the second packaging box 518 are fastened together to form a complete packaging box. The first clip 502 and the second clip 517 are respectively provided on the lower part of the first packaging box 501 and the second packaging box 518. The heating component 503 and the flattening component 504 are provided on the third slide rod 508 and inside the first packaging box 501 and the second packaging box 518. The venting valve 505 and the vacuum valve 506 are respectively provided on the upper part of the first packaging box 501 and the second packaging box 518.

[0067] In one implementation, the seventh tie rod 510 is movably connected to the second end of the second three-pronged connecting rod 512, specifically, the connection method is hinged.

[0068] In one implementation, the ninth tie rod 513 is movably connected to the third end of the second three-pronged connecting rod 512, specifically, the connection method is hinged.

[0069] In one implementation, the ninth lever 513 is movably connected to one end of the third rocker arm 514, specifically, the connection method is hinged.

[0070] According to the established procedures, packaging bag 302 enters the simple vacuum sealing station. First, the first packaging box 501 and the second packaging box 518 are closed, vacuum extraction is started, vacuum valve 506 is stopped, and vent valve 505 is activated, allowing atmospheric pressure air to enter the packaging boxes, which can then be opened. The simple vacuum sealing device can be set to complete sealing or incomplete sealing. If incomplete sealing is selected, the push rod device 14 is activated, preparing for the rotary step-by-step vacuum sealing packaging mode. If complete sealing is selected, the device continues sealing until completion, then moves to the cooling device 15 for cooling.

[0071] Furthermore, such as Figure 6 As shown, the transfer device 20 includes a chassis 601, a rotating shaft 602 connected to the chassis 601, the rotating shaft 602 being vertically arranged, a protective shell located in the middle of the rotating shaft 602, a first gear 603 located at the lower part of the rotating shaft 602, and a positioning base 612 located at the upper part of the rotating shaft 602. A second lifting assembly 604 is located inside the protective shell 605, and a base support 606 is connected to the second lifting assembly 604, located outside the base. A side flattening assembly 608 is connected to the side of the positioning base 612, and an upper flattening assembly 610 is located above the positioning base 612. An upper bag clamping assembly 609 is located above the side flattening assembly 608 and to the side of the upper flattening assembly 610. The flattening assembly is driven by a flattening cylinder 611.

[0072] The packaging bag 302 will undergo rotary step-by-step vacuum sealing packaging according to the program settings. First, it is conveyed from the linear packaging machine via the pusher device 14 and then enters the transfer device 20 at the transfer station. Its function is to first shape the packaging bag 302 into a closed bag opening so that it can be transferred to the bag opening clamping device of the rotary vacuum sealing device 23. Its operation is as follows: The first gear 603 and the rotating shaft 602 are fixed to the chassis 601 and the corresponding support 705, driving the positioning base 612 and the entire structure to rotate via transmission. First, the packaging bag 302 is guided by the pusher mechanism into the second lifting assembly 604. The clamp of the upper bag clamping assembly 609 holds the upper opening of the packaging bag 302. When it rotates to the predetermined position, the upper bag clamping assembly 609 closes the packaging bag 302 according to the predetermined program. At the same time, the second lifting assembly 604, controlled by a circumferential cam, rises to the predetermined position inside the packaging box. The upper flattening assembly 610 and the flattening cylinder 611 work together to flatten the bag opening of the packaging bag 302. The clips inside the packaging box clamp onto the packaging bag 302, and the lifting component tray descends and retracts, completing the transfer of the packaging bag 302.

[0073] Furthermore, such as Figure 7As shown, the packaging bag 302 is transferred to the rotary vacuum sealing device 23 via the transfer device 20. The rotary vacuum sealing device 23 includes an outer cover 701, a box base 708, a main shaft 712, and a bottom base 713. The outer cover 701 is movably connected to the box base 708. The outer cover 701 is connected to an arm 702. The box base 708 is connected to a support plate 714 and the arm 702. All support arms are connected to the main shaft 712. A circumferential cam 710 is provided on the bottom base 713. The circumferential cam 710 is connected to a pressure shaft 709. The pressure shaft 709 passes through the support plate 714 and is connected to the boom 702. The main shaft 712 is inserted into the bottom base 713. A second gear 711 is provided inside the bottom base 713 and is sleeved on the main shaft 712. The main shaft 712 has a rotary joint 704, a bracket 705, and a conductive ring 706 in equal sections. A vacuum port 703 is provided above the conductive ring 706. A gas distribution cylinder 707 is provided on the main shaft 712 and between the boom 702 and the support plate 714. The second gear 711 of the rotary vacuum sealing device 23 is connected to the first gear 603 of the transmission device 20 through other transmission gears or chains.

[0074] The rotary vacuum sealing device 23 of the present invention adopts a rotary staged vacuum method. Figure 7 The rotary vacuum sealing device 23 shown first uses a transfer device 20 to transfer the packaging bag 302 from the horizontal linear filling and metering assembly to the outer cover 701 and box base 708 of the packaging box. The corresponding structural combination flattens and clamps the packaging bag 302. The pressure shaft 709 and the circumferential cam 710 work together to close the outer cover 701 and box base 708. According to the program settings, rotary vacuum extraction begins. Each rotation switches the vacuum level once. Generally, there are three levels of vacuum: primary, secondary, and tertiary. Each packaging box is equipped with a vacuum gauge to display or adjust different vacuum levels. Compressed air is introduced through the rotary joint 704 and bracket 705. Various solenoid valves are installed on the steam cylinder to control the cylinders and vent valves at each pressure point. The second gear 711, main shaft 712, and bottom base 713 bear the power and mechanical transmission.

[0075] Furthermore, the filling device 6 of the present invention specifically includes filling the metered material into the packaging bag 302 as follows:

[0076] The filling device 6 includes N metering hoppers, namely the first metering hopper, the second metering hopper, ..., the Nth metering hopper. The top of the metering hopper is connected to the main hopper 21. The lower part of the metering hopper is designed with a settling opening device. After the packaging bag 302 reaches the fourth preset position, the exhaust pipe descends while inserting into the packaging bag 302 to support the opening of the packaging bag 302. At this time, the metering hopper has weighed the material.

[0077] The first metering hopper opens the discharge flap according to the instruction. The material weighed in the first metering hopper is filled into the packaging bag 302 through the chute hopper. Then the filling device 6 is activated, the first metering hopper leaves, and the second metering hopper arrives.

[0078] The second metering hopper opens the discharge flap according to the instruction. The material weighed by the second metering hopper is filled into the packaging bag 302 through the chute hopper. Then the filling device 6 is activated, the second metering hopper leaves, and the third metering hopper arrives.

[0079] ...

[0080] The Nth metering hopper opens its discharge flap according to the instruction, and the material weighed in the Nth metering hopper is filled into the packaging bag 302 through the chute hopper, and the filling is completed.

[0081] In one specific implementation, the filling device 6 includes three metering hoppers: a first metering hopper, a second metering hopper, and a third metering hopper. A main hopper 21 is connected to the top of each of the three metering hoppers. The lower part of each metering hopper is designed with a settling opening device. After the packaging bag 302 reaches the fourth preset position, the exhaust pipe descends while simultaneously inserting into the packaging bag 302 to ensure a proper opening. At this point, the metering hopper has weighed the material. The first metering hopper then opens its discharge flap according to instructions, and the weighed material from the first metering hopper... The material is filled into the packaging bag 302 through the chute hopper. Then, the filling device 6 is activated, the first metering hopper leaves and the second metering hopper arrives. The second metering hopper opens its discharge flap according to the instruction, and the material weighed in the second metering hopper is filled into the packaging bag 302 through the chute hopper. Then, the filling device 6 is activated, the second metering hopper leaves and the third metering hopper arrives. The third metering hopper opens its discharge flap according to the instruction, and the material weighed in the third metering hopper is filled into the packaging bag 302 through the chute hopper. The filling is then complete.

[0082] In one specific implementation, the filling device 6 includes four metering hoppers: a first metering hopper, a second metering hopper, a third metering hopper, and a fourth metering hopper. A main hopper 21 is connected to the top of each of the four metering hoppers. The lower part of each metering hopper is designed with a settling opening device. After the packaging bag 302 reaches the fourth preset position, the exhaust pipe descends while simultaneously inserting into the packaging bag 302 to ensure a proper opening. At this point, the metering hopper has weighed the material. The first metering hopper opens its discharge flap according to instructions, and the material weighed in the first metering hopper is filled into the packaging bag 302 through a chute hopper. Then, the filling device 6 operates, and the first metering hopper... The first hopper leaves, and the second metering hopper arrives. The second metering hopper opens its discharge flap according to instructions, and the weighed material is filled into packaging bag 302 via a chute. Then, the filling device 6 activates, the second metering hopper leaves, and the third metering hopper arrives. The third metering hopper opens its discharge flap according to instructions, and the weighed material is filled into packaging bag 302 via a chute. Then, the filling device 6 activates, the third metering hopper leaves, and the fourth metering hopper arrives. The fourth metering hopper opens its discharge flap according to instructions, and the weighed material is filled into packaging bag 302 via a chute. Filling is complete.

[0083] When the packaging machine starts the filling and metering component, it can achieve multi-stage filling mode during the filling stage. Multi-stage filling mode can improve the accuracy of material filling on the one hand, and control different amounts of material to be filled into different packaging bags 302 through a single filling process.

[0084] Furthermore, the filling metering assembly of the present invention also includes a detection and sorting station 12, which is located before the simple sealing station 13.

[0085] The simple sealing station 13 is equipped with a sealing device and a heat sealing device to seal the packaging bag 302. The sealing packaging includes complete sealed packaging and incomplete sewn packaging.

[0086] After the filling device 6 fills the metered material into the packaging bag 302, the filled packaging bag 302 is moved to the inspection and sorting station 12. The filled packaging bag 302 is then judged according to standards. If the inspection packaging bag 302 is qualified, it is moved to the fifth preset position. If the inspection packaging bag 302 is unqualified, it falls at the inspection and sorting station 12 and slides out of the packaging machine through the chute.

[0087] As one embodiment, after the filling device 6 completes filling the measured material into the packaging bag 302, the packaging bag 302 filled with the material is moved to the detection and sorting station 12, and a standard judgment is performed on the packaging bag 302 filled with the material. Specifically, the weight detection is performed on the packaging bag 302, and more specifically, a weight threshold is set according to a multi-segment filling mode. If the detected packaging bag 302 is qualified, the packaging bag 302 filled with the material is moved to a fifth preset position; if the detected packaging bag 302 is unqualified, the packaging bag 302 drops at the detection and sorting station 12 and slides out of the packaging machine through a chute.

[0088] As a specific embodiment, setting the weight threshold according to the multi-segment filling mode is specifically: weight threshold = N(a, b), where a is the lower limit value of the weight threshold in the 1-segment filling mode, b is the upper limit value of the weight threshold in the 1-segment filling mode, and N is the number of segments of the multi-segment filling mode, that is, the number of metering hoppers.

[0089] As one embodiment, the packaging machine of the present invention controls the operating speed of the packaging machine according to the amount or weight of the material filled in the packaging bag.

[0090] As a specific embodiment, the more materials that need to be filled into the packaging bag, or the heavier the weight of the packaging bag after being filled with materials, the faster the filling and packaging rate of each device of the packaging machine is controlled.

[0091] As a specific embodiment, the more materials that need to be filled into the packaging bag, or the heavier the weight of the packaging bag after being filled with materials, the slower the filling and packaging rate of each device of the packaging machine is controlled.

[0092] In one embodiment, the weight of the material to be filled into the packaging bag is W. If W is greater than 0 and less than E, the filling and packaging rate of the packaging machine is controlled to be a first rate; if W is greater than E and less than R, the filling and packaging rate of the packaging machine is controlled to be a second rate; if W is greater than R and less than T, the filling and packaging rate of the packaging machine is controlled to be a third rate, wherein E, R and T are material weight thresholds, 0 < E < R < T, the first rate < the second rate < the third rate, the first rate indicates that the working state of the packaging machine is a slow filling state, the second rate indicates that the working state of the packaging machine is a medium-speed filling state, and the third rate indicates that the working state of the packaging machine is a fast filling state.

[0093] In one embodiment, the weight of the material to be filled in the packaging bag is W. If W is greater than 0 and less than E, the filling and packaging rate of the packaging machine is controlled to be a first rate; if W is greater than E and less than R, the filling and packaging rate of the packaging machine is controlled to be a second rate; if W is greater than R and less than T, the filling and packaging rate of the packaging machine is controlled to be a third rate, wherein E, R and T are weight thresholds of the material, 0<E<R<T, the third rate < the second rate < the first rate, the third rate indicates that the working state of the packaging machine is a slow filling state, the second rate indicates that the working state of the packaging machine is a medium-speed filling state, and the first rate indicates that the working state of the packaging machine is a fast filling state.

[0094] Further, the present invention further comprises a first electric control box 1 and a second electric control box 25, the first electric control box 1 is connected to the filling metering assembly, and the second electric control box 25 is connected to the vacuum sealing assembly.

[0095] The whole machine structure of the invention is equipped with all control instruments, that is, electric control boxes, comprising a first electric control box 1 and a second electric control box 25, the first electric control box 1 is a main electric control box, and the second electric control box 25 is an auxiliary electric control box. The first electric control box 1 and the second electric control box 25 respectively control the filling metering part and the vacuum sealing part.

[0096] This invention discloses a pre-made bag filling and metering composite vacuum packaging machine, comprising a first electrical control box 1 and a second electrical control box 25, which are equipped with all the control instruments for the entire machine. The bag picking device 3 picks up a packaging bag 302 from the bag box 301 by picking up the bag from the top or bottom and swings it upwards. At the same time, the suction cup rotates, causing the packaging bag 302 to rotate from horizontal to vertical and stop at a predetermined position. The moving bag opening device 2 connects with the suction cup of the bag picking device 3 and moves to the right under the action of the pull rod. At the same time, the bag opening suction cup gradually opens, causing the packaging to gradually open. It moves to a predetermined position and connects with the inflation bag opening device 4 and the lower bag opening device 5. The inflation tube sinks into the packaging bag 302 to expand the opening. At the same time, the suction cup of the lower bag opening device 5 adsorbs the lower part of the packaging bag 302, so that the packaging bag 302 is fully opened. Then, it continues to move to the right to the predetermined position and connects with the clamp of the bag holding device 8. The packaging bag 302 gradually moves to the next station. The filling device 6 is equipped with two or more metering hoppers, and its lower part is designed with a settling opening device. After the packaging bag 302 reaches the predetermined position, the exhaust pipe descends while inserting into the packaging bag 302 to ensure a good opening. At this time, the metering hopper has weighed the material. According to the program instructions, the discharge flaps are opened quickly and sequentially, and the weighed material is filled into the packaging bag 302 through the chute hopper. Depending on the design structure, this station can also be equipped with a two-stage (segmented) first filling, followed by a two-stage second filling, or a three-stage (segmented) first filling, followed by a three-stage second and third filling. In short, the filling device 6 can have dual or multiple filling functions. Alternatively, the filling device 6 can be set to graded or segmented filling, i.e., first filling and second filling, etc. In short, after the filling device 6 completes filling and metering, it descends to the opening station 7 according to the program. The suction cups set up opposite to it continue to open the packaging bag 302, maintaining a good opening state. Upon reaching the predetermined correction station, the tray of the correction device rises to the predetermined position, and the packaging bag 302 falls freely and vertically onto the tray, achieving the correction effect. Simultaneously, the positioning fork of the correction device inserts into the bag to correct its position. Subsequently, the closing and flattening device 11 flattens the bag opening to ensure the bag is wrinkle-free during sealing. The bag continues downward to the inspection and sorting station 12, where it is sorted according to the set pass / fail standards. The inspection results are displayed on the on-site display screen, electrical control box, or other display devices. For multi-stage filling, the bag is displayed and sorted; if it fails inspection, the packaging bag 302 falls at this station and slides out of the machine via a chute. If it passes inspection, it enters the simple sealing station 13, where it is sealed using a sealing device and a heat-sealing device. The sealing device closes the sealing box, the negative pressure valve is activated to create a vacuum, the elastic jaws grip the packaging bag 302, and the clamping cylinder is activated to clamp the heat-sealing module for heat sealing. According to the predetermined procedure, the vacuum stops, the vent valve is activated, and the packaging box can be opened. The sealing packaging can be set to complete sealing or incomplete sealing. If incomplete sealing is selected, the push rod device 14 is activated to prepare for entering the rotary negative pressure sealing mode for vacuum sealing packaging.If a complete sealing is selected, the product continues to the cooling device 15. Both the heat sealing and cooling devices 15 are equipped with a simple vacuum device 19. At this station, the following can be performed according to the settings: 1. If the packaging bag 302 is already completely sealed, cooling is performed here. 2. If the packaging bag 302 is not completely sealed, a first (first) simple vacuum and / or a second (second) simple vacuum can be performed here to complete the sealing and cooling. Then it falls to the sorting and output device 17, where it is shaped into a finished product. This completes the entire packaging process of the horizontal linear weighing machine. 3. If the product is selected for complete rotary vacuum packaging, the heat sealing and cooling stations can be left unsealed or partially sealed. At this station, the pusher device 14 is activated to push the packaging bag 302 to the transfer device 20. The transfer device 20 clamps and transfers the packaging bags 302 to the rotary vacuum sealing device 23 one by one. The rotary vacuum sealing device 23 is equipped with 6-12 vacuum boxes (composed of an outer cover 701 and a box base 708). 2-3 levels of vacuum extraction are set at predetermined positions. After reaching the predetermined position, the heating sealing device (outer cover 701 and box base 708) closes to seal the packaging bags 302. After sealing, the vacuum boxes gradually empty, the outer cover 701 of the vacuum boxes opens, and the clamping device (the clamping device is part of the rotary vacuum sealing device 23 and can be a gripper, hand, etc., not shown in the figure) releases, allowing the packaging bags 302 to fall freely onto the shaping conveyor 24. The shaping device taps and crushes each bag, and the packaging bags 302 are output neatly, completing the entire packaging process.

[0097] like Figure 7 As shown, the rotary vacuum sealing device 23 in the figure is equipped with a safety guardrail 22 and corresponding safety facilities. The traction walking device 16 and conjugate cam mechanism drive the crank rocker arm, which, in conjunction with the bag holding device 8 and bag transferring device 10, completes the sequential transfer of the packaging bag 302 to each station. The power unit 18 includes a motor, reducer, mechanical divider, electromagnetic clutch, and transmission components. According to the program settings, only the linear filling and metering section can be activated to complete ordinary packaging, or all sections can be activated to complete the entire process of linear metering and filling, and composite vacuum rotary sealing.

[0098] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] It will be readily understood by those skilled in the art that this invention includes any combination of the inventive description and specific embodiments outlined in the foregoing specification, as well as the various parts shown in the accompanying drawings. Due to space limitations and for the sake of brevity, not all of these combinations have been described in detail. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

[0100] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-made bag filling and metering composite vacuum packaging machine, characterized in that, Includes filling and metering components and vacuum sealing components. The filling and metering assembly adopts a horizontal linear structure and includes a moving bag opening device, a bag taking device, an inflation bag opening device, a lower bag opening device, a filling device, a bag holding device, a bag transferring device, a closing and flattening device, a simple sealing station, a push rod device, and a cooling device arranged in sequence according to the filling and metering processing order of the packaging bag; the simple sealing station and the cooling device are equipped with simple vacuum devices, namely a first simple vacuum device and a second simple vacuum device; The vacuum sealing assembly adopts a rotary step-by-step vacuum sealing structure. The vacuum sealing assembly includes a simple vacuum sealing section and a rotary step-by-step vacuum sealing section. The simple vacuum sealing section includes a first simple vacuum device and a second simple vacuum device. The rotary step-by-step vacuum sealing section includes a transfer device, a rotary vacuum sealing device and a shaping conveyor arranged in sequence. The bag-picking device acquires the packaging bag and moves it to a first preset position. The moving bag-opening device opens the packaging bag acquired by the bag-picking device and then moves it to a second preset position, where it connects with the inflatable bag-opening device and the lower bag-opening device. The lower bag-opening device acquires the packaging bag, and the inflatable bag-opening device expands the opening inside the packaging bag and moves it to a third preset position. The bag-holding device acquires the packaging bag and moves it to a fourth preset position. The filling device fills the metered material into the packaging bag and moves the filled packaging bag to a fifth preset position. The closing and flattening device flattens the opening of the packaging bag. After flattening the opening, the packaging bag is sealed by a sealing device and a heat-sealing device. The sealed packaging includes complete sealed packaging and incomplete sealed packaging. If the packaging machine is set to perform normal filling and metering packaging, the heat sealing device will completely seal the packaging, and then the packaging bag will be moved to the sixth preset position and cooled by the cooling device. If the packaging machine is set to perform simple vacuum sealing packaging, the heat sealing device will perform incomplete sealing packaging, and then the packaging will be performed in sequence through the first simple vacuum device, the second simple vacuum device, and the second simple vacuum device, followed by cooling by the cooling device. If the packaging machine is set to perform rotary step-by-step vacuum sealing packaging, the heat sealing device will perform incomplete sealing packaging. Then the pusher device will push the packaging bag to the transfer device. The transfer device will transfer the packaging bag to the rotary vacuum sealing device one bag at a time. The rotary vacuum sealing device will perform multi-stage vacuum extraction on the packaging bag and then send the packaging bag to the shaping conveyor. The simple vacuum device includes a first packaging box, a second packaging box, and a third slide rod. The first packaging box and the second packaging box are arranged opposite to each other. A front plate is provided on one side of the first packaging box, and a rear plate is provided on the opposite side of the second packaging box. The third slide rod passes through the front plate, the first packaging box, the second packaging box, and the rear plate. A clamping cylinder and a seventh pull rod are connected to the side of the rear plate away from the second packaging box. An eighth pull rod is connected to the third slide rod. Both the seventh and eighth pull rods are connected to a second three-pronged connecting rod. The second three-pronged connecting rod is connected to a ninth pull rod. The ninth pull rod is connected to a third rocker arm. The third rocker arm is connected to a second conjugate cam. The rotary vacuum sealing device includes an outer cover, a box base, a main shaft, and a bottom base. The outer cover is movably connected to the box base and is connected to an arm. The box base is connected to a support plate. The arm is connected to the main shaft. A circumferential cam is provided on the bottom base. The circumferential cam is connected to a pressing shaft. The pressing shaft passes through the support plate and is connected to the arm. The main shaft is inserted into the interior of the bottom base. A second gear is provided inside the bottom base and is sleeved on the main shaft. A rotary joint, a bracket, and a conductive ring are provided at the top of the main shaft. A vacuum port is provided above the conductive ring.

2. The pre-made bag filling and metering composite vacuum packaging machine according to claim 1, characterized in that, The bag-retrieving device includes a bag box and a cam linkage mechanism. The bag box has an outlet, and the outlet of the bag box is provided with an adsorption-release mechanism and a retrieving mechanism. The adsorption-release mechanism is connected to the retrieving mechanism. The cam linkage mechanism includes a pull rod and a cam. The pull rod includes a first pull rod and a second pull rod. The cam is a conjugate cam, which includes a first cam and a second cam. The first pull rod is connected to the first cam through a first rocker arm, and the second pull rod is connected to the second cam. A guide mechanism is provided on one side of the adsorption-release mechanism, and a bag-retrieval mechanism is provided on the guide mechanism. The bag-retrieval mechanism is connected to a telescopic mechanism.

3. The pre-made bag filling and metering composite vacuum packaging machine according to claim 1, characterized in that, The filling metering assembly further includes a conjugate transmission device, which includes a first conjugate cam and a first vertical plate. The first vertical plate is connected to a second vertical plate, and the second vertical plate is connected to a first slide rod and a third pull rod. The first slide rod is connected to a fourth pull rod, and both the third and fourth pull rods are connected to a first three-pronged connecting rod. The first three-pronged connecting rod is connected to a fifth pull rod, and the fifth pull rod is connected to a second rocker arm. The second rocker arm is connected to the first conjugate cam.

4. The pre-made bag filling and metering composite vacuum packaging machine according to claim 1, characterized in that, The push rod device includes a main board and an extension cylinder. The upper part of the main board is provided with a push plate, the push plate is connected to a suction cup, the push plate is connected to a sixth pull rod, the sixth pull rod is connected to a tilting cylinder, one end of the main board is connected to a second slide rod, the second slide rod is fitted with a sliding sleeve, the second slide rod is connected to an extension cylinder, and the lower part of the main board is fixedly connected to a support plate.

5. The pre-made bag filling and metering composite vacuum packaging machine according to claim 1, characterized in that, The transfer device includes a chassis connected to a rotating shaft, the rotating shaft being vertically arranged, a protective shell located in the middle of the rotating shaft, a first gear located at the lower part of the rotating shaft, a positioning base located at the upper part of the rotating shaft, a second lifting assembly located inside the protective shell, the second lifting assembly being connected to a base support located outside the positioning base, a side flattening assembly connected to the side of the positioning base, and an upper flattening assembly located above the positioning base.

6. The pre-made bag filling and metering composite vacuum packaging machine according to claim 1, characterized in that, The filling device specifically includes filling the metered material into the packaging bag: The filling device includes N metering hoppers, numbered from the first to the Nth metering hopper. A main hopper is connected to the top of each metering hopper, and a settling opening is designed at the bottom of each metering hopper. After the packaging bag reaches the fourth preset position, the metering hopper has already weighed the material. The first metering hopper opens its discharge flap according to the instruction. The material weighed in the first metering hopper is filled into the packaging bag through the chute hopper. Then the filling device is activated, the first metering hopper leaves, and the second metering hopper arrives. The second metering hopper opens its discharge flap according to the instruction. The material weighed in the second metering hopper is filled into the packaging bag through the chute hopper. Then the filling device is activated, the second metering hopper leaves, and the third metering hopper arrives. This process is repeated until the Nth metering hopper opens its discharge flap according to the instruction. The material weighed in the Nth metering hopper is then filled into the packaging bag through the chute hopper, and the filling is completed.

7. A pre-made bag filling and metering composite vacuum packaging machine according to any one of claims 1-6, characterized in that, The filling and metering assembly also includes a detection and sorting station. After the filling device completes the filling process by filling the metered material into the packaging bags, the filled packaging bags are moved to the inspection and sorting station for standard judgment. If the packaging bag passes inspection, the bag filled with material is moved to the fifth preset position. If the packaging bag fails inspection, it falls at the inspection and sorting station and slides out of the packaging machine via a chute.

8. A pre-made bag filling and metering composite vacuum packaging machine according to any one of claims 1-6, characterized in that, It also includes a first electrical control box and a second electrical control box, the first electrical control box being connected to the filling and metering assembly, and the second electrical control box being connected to the vacuum sealing assembly.

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