A double layer vacuum packaging machine

Abstract

The application discloses a double-layer vacuum packaging machine, which has a rack, wherein an upper bag mechanism for feeding a packaging bag is arranged on the rack; a bag clamping mechanism for feeding the packaging bag into a double-layer bag clamping device is arranged on the rack; the double-layer bag clamping device has a double-layer structure and can clamp materials below the bag body; an opening mechanism can drive the double-layer bag clamping device to open; an opening device can open the packaging bag clamped by the double-layer bag clamping device; a bag supporting structure can support the opened packaging bag; a vacuum chamber has a double-layer structure and can vacuumize the packaging bag; a bag moving mechanism can feed the packaging bag containing materials into the vacuum chamber; a double-layer rotary vacuum chamber structure and a series of matched structures are arranged, so that double-layer packaging can be realized, and the working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bag feeding type vacuum packaging machine, and particularly relates to a double-layer vacuum packaging machine. BACKGROUND

[0002] In the process of realizing the present application, the inventor found that the prior art at least has the following problems:

[0003] The conventional bag feeding type vacuum packaging machine only has a single-layer rotary vacuum chamber structure, for example, the bag feeding type automatic vacuum packaging machine with the announcement number CN 203450427 U, which can only package a single layer of packaging bag, and has low working efficiency, and meanwhile, there is no relevant accessory structure to adapt to the multi-layer rotary vacuum chamber structure. SUMMARY

[0004] The present application solves the technical problem of providing a double-layer vacuum packaging machine which is provided with a double-layer rotary vacuum chamber structure and a series of matching structures, and can realize double-layer packaging and greatly improve working efficiency.

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: a double-layer vacuum packaging machine has:

[0006] A rack is provided with:

[0007] A bag feeding mechanism for feeding a packaging bag;

[0008] A clamping mechanism for feeding the packaging bag into a double-layer clamping mechanism;

[0009] A double-layer clamping device having a double-layer structure, which can clamp the material below the bag body;

[0010] An opening mechanism capable of driving the double-layer clamping device to open;

[0011] An opening device capable of opening the packaging bag clamped by the double-layer clamping device;

[0012] A bag supporting structure capable of supporting the opened packaging bag;

[0013] A vacuum chamber having a double-layer structure and capable of vacuumizing the packaging bag;

[0014] A bag moving mechanism capable of feeding the packaging bag containing the material into the vacuum chamber.

[0015] One of the above technical schemes has the following advantages or beneficial effects: the double-layer rotary vacuum chamber structure is provided, and a series of matching structures are provided, so that double-layer packaging can be realized, and the working efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1Structure diagram of a double-layer vacuum packaging machine according to the present application;

[0017] Figure 2 Structure diagram of a double-layer vacuum packaging machine according to the present application; Figure 1

[0018] Figure 3 Structure diagram of a double-layer vacuum packaging machine according to the present application; Figure 1

[0019] Figure 4 Structure diagram of a double-layer vacuum packaging machine according to the present application; Figure 1

[0020] Figure 5 Structure diagram of a double-layer vacuum packaging machine according to the present application; Figure 1

[0021] Figures 6-8 Structure diagram of a bag feeding mechanism of a double-layer vacuum packaging machine according to the present application; Figure 1

[0022] Figures 9-11 Structure diagram of a bag clamping mechanism of a double-layer vacuum packaging machine according to the present application; Figure 1

[0023] Figures 12-14 Structure diagram of a bag opening mechanism of a double-layer vacuum packaging machine according to the present application; Figure 1

[0024] Figures 15-20 Structure diagram of a double-layer bag clamping device of a double-layer vacuum packaging machine according to the present application; Figure 1

[0025] Figures 21-27 Structure diagram of a bag opening device of a double-layer vacuum packaging machine according to the present application; Figure 1

[0026] Figures 28-30 Structure diagram of a bag supporting mechanism of a double-layer vacuum packaging machine according to the present application; Figure 1

[0027] Figures 31-35 Structure diagram of a vacuum chamber of a double-layer vacuum packaging machine according to the present application; Figure 1

[0028] Figures 36-39 Structure diagram of a bag moving mechanism of a double-layer vacuum packaging machine according to the present application; Figure 1

[0029] Figures 40-41 Structure diagram of a rack of a double-layer vacuum packaging machine according to the present application. Figure 1 DETAILED DESCRIPTION

[0030] ​​​​​​​​​​​​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0031] Referring to Figures 1-41 A double-layer vacuum packaging machine has a rack, the rack is provided with: a bag feeding mechanism for feeding bags; a bag clamping mechanism for feeding bags into a double-layer bag clamping device; the double-layer bag clamping device has a double-layer structure and can clamp materials below the bag body; an opening mechanism can drive the double-layer bag clamping device to open; an opening device can open the bag clamped by the double-layer bag clamping device; a bag opening structure can open the opened bag; a vacuum chamber has a double-layer structure and can vacuum the bag; and a bag moving mechanism can feed the bag containing materials into the vacuum chamber.

[0032] The bag feeding mechanism has:

[0033] The rack 101 can place bags; the bags are vertically stacked on the rack 101; and the rear end of the rack 101 is provided with a limiting baffle for limiting the bags. The bags are vertically placed, the bag taking mechanism takes the bags one by one from one side, and the bag feeding action is completed.

[0034] The suction disc rack 102 is provided with a suction mechanism, the suction mechanism can suction the bags on the rack 101; one bag on one side of the rack 101 is suctioned by the suction mechanism, and then the bag is fed into the packaging machine.

[0035] The movable driving mechanism can drive the suction disc rack 102 to translate. The suction disc rack 102 is driven by the movable driving mechanism to move back and forth, first moves to the rack 101 to suction the bags on the rack 101, then drives the suction disc rack 102 to move to the vacuum packaging machine after the bags are suctioned, the bag feeding is completed, then moves to the rack 101 to suction the bags, and the reciprocating action is repeated.

[0036] The movable driving mechanism includes a fourth connecting rod 108, the first end of the fourth connecting rod 108 is hinged to the suction disc rack 102; the fourth connecting rod 108 is hinged to the rack; and the first end of the fourth connecting rod 108 is connected to the power mechanism. The power mechanism pushes the first end of the fourth connecting rod 108, the middle part of the fourth connecting rod 108 is hinged to the rack, the middle part of the fourth connecting rod 108 can rotate around the rack, thereby driving the first end of the fourth connecting rod 108 to move, and further driving the suction disc rack 102 to move. The reciprocating action of taking and feeding bags is completed. The fourth connecting rod 108 has an upward movement during swinging, which is convenient for the bag clamping mechanism to clamp the bag body in the next process.

[0037] The rack is provided with a connecting shaft 105, and the fourth connecting rod 108 is rotatably installed on the connecting shaft 105, and the fourth connecting rod 108 is hinged to the rack through the connecting shaft 105. The first connecting rod 104 is arranged on the suction disc rack 102, the first end of the fourth connecting rod 108 is hinged to the first end of the first connecting rod 104, and the fourth connecting rod 108 is hinged to the suction disc rack 102 through the first connecting rod 104; the second connecting rod 106 and the third connecting rod 107 are further arranged, the first end of the second connecting rod 106 is fixedly installed on the connecting shaft 105, the first end of the third connecting rod 107 is hinged to the second end of the second connecting rod 106, and the second end of the third connecting rod 107 is hinged to the second end of the first connecting rod 104. The first connecting rod 104, the second connecting rod 106, the third connecting rod 107 and the fourth connecting rod 108 form a parallelogram. The parallelogram has stability and can always keep the opposite sides parallel. The second connecting rod 106 is fixed on the connecting shaft 105 and arranged horizontally, and since the second connecting rod 106 is arranged horizontally, the first connecting rod 104 opposite to the second connecting rod 106 will keep parallel to the second connecting rod 106 during movement, that is, the first connecting rod 104 will always keep horizontal, so that the bag is always kept horizontal, and the bag is stable and smooth, and will not shake or swing.

[0038] The suction mechanism is the suction disc 103, and other types of suction mechanisms can also be used, such as a cylinder, a suction hole, a suction block and the like.

[0039] The power mechanism is a push rod, which can push the second end of the fourth connecting rod 108 to swing, and other types of structures can also be used, such as a cylinder, a hydraulic cylinder, a servo cylinder and the like.

[0040] The suction disc rack 102 is provided with horizontal and vertical suction disc mounting grooves, and a series of suction disc mounting holes are arranged in the suction disc mounting grooves.

[0041] During operation, the suction disc rack 102 is driven to move back and forth by the movable driving mechanism, moves to the material rack 101 first, sucks the packaging bag on the material rack 101, and then drives the suction disc rack 102 to move to the vacuum packaging machine after the packaging bag is sucked, to complete the bagging of the packaging bag, and then moves to the material rack 101 to suck the material after the bagging of one packaging bag is completed, and the reciprocating action is repeated. The parallelogram connecting rod mechanism always keeps horizontal bagging, and the bagging is stable and smooth, and will not shake or swing.

[0042] After the above structure is used, the parallelogram swinging mechanism always keeps horizontal bagging, and the bagging is stable and smooth, and will not shake or swing.

[0043] The bag clamping structure has:

[0044] The rotating shaft 22 is rotatably installed on the frame; the rotating shaft 22 is a swing driving component of the bag clamping structure. The bag clamping first connecting rod 23 is fixedly installed at the first end of the rotating shaft 22; through the rotation of the rotating shaft 22, the swing of the bag clamping first connecting rod 23 is driven. The clamping mechanism is installed at the second end of the bag clamping first connecting rod 23. The bag clamping first connecting rod 23 swings, drives the clamping mechanism to swing and operate, the clamping mechanism swings along the horizontal plane, adopts an arc motion mode, can avoid the bag feeding mechanism, can avoid the bag feeding mechanism in the arc motion process, so as to avoid interference with the bag feeding mechanism, and ensure normal work of the device.

[0045] There is also a fixed shaft 24, which is fixedly installed on the second end of the bag clamping first connecting rod 23, and the clamping mechanism is installed on the fixed shaft 24. The clamping mechanism is connected to the bag clamping first connecting rod 23 through the fixed shaft 24.

[0046] There are also a bag clamping second connecting rod 26, a bag clamping third connecting rod 27 and a bag clamping fourth connecting rod 28. The first end of the bag clamping second connecting rod 26 is rotatably installed on the fixed shaft 24, and the clamping mechanism is fixedly connected to the first end of the bag clamping second connecting rod 26. The first end of the bag clamping third connecting rod 27 is hingedly connected to the second end of the bag clamping first connecting rod 23. The first end of the bag clamping fourth connecting rod 28 is hingedly connected to the second end of the bag clamping third connecting rod 27. The bag clamping fourth connecting rod 28 is installed on the frame. The bag clamping first connecting rod 23, the bag clamping second connecting rod 26, the bag clamping third connecting rod 27 and the bag clamping fourth connecting rod 28 form a parallelogram. Through the deformation motion of the parallelogram, the clamping mechanism is stably swung.

[0047] The bag clamping fourth connecting rod 28 is fixedly installed on the frame. The direction of the bag clamping fourth connecting rod 28 is fixed, and in the deformation motion of the parallelogram, the bag clamping second connecting rod 26 remains parallel to the bag clamping fourth connecting rod 28, so that the direction of the bag clamping second connecting rod 26 remains unchanged, and the clamping mechanism installed on the bag clamping second connecting rod 26 also remains unchanged, so that the packaging bag is stably fed into the vacuum chamber.

[0048] There is also a bag clamping column 21, which is installed on the frame, and the second end of the bag clamping fourth connecting rod 28 is fixedly installed on the bag clamping column 21. The rotating shaft 22 is rotatably installed in the bag clamping column 21. The bag clamping column 21 provides a mounting basis for the bag clamping fourth connecting rod 28, and the rotating shaft 22 is also rotatably installed in the bag clamping column 21, so that the structure is more compact.

[0049] The first end of the bag clamping second connecting rod 26 is fixedly provided with a rotating sleeve 25, which is rotatably installed on the fixed shaft 24 through the rotating shaft 22. The rotating sleeve 25 realizes the hinged connection of the bag clamping first connecting rod 23 and the bag clamping second connecting rod 26.

[0050] The clamping mechanism has: a fixed clamping arm 29 fixedly connected with the bag clamping second connecting rod 26; a movable clamping arm 211 hinged with the fixed clamping arm 29; and a clamping block 212 arranged at the end of the fixed clamping arm 29 and the movable clamping arm 211, which can cooperate with the clamping of the packaging bag. The relative distance between the fixed clamping arm 29 and the movable clamping arm 211 is changed by driving the movable clamping arm 211 to move, so as to achieve the purpose of clamping or loosening.

[0051] The fixed clamping arm 29 is further provided with a clamping cylinder 210 for driving the movable clamping arm 211 to move.

[0052] The bag clamping first connecting rod 23 swings to drive the clamping mechanism to swing and operate, and the clamping mechanism swings along the horizontal plane in an arc motion mode, so as to avoid the bag conveying mechanism and the bag feeding mechanism, thereby avoiding interference with the bag feeding mechanism and ensuring normal operation of the device.

[0053] After the above structure is adopted, the motion trajectory of the bag clamping structure is arc-shaped, which can avoid the bag feeding mechanism during the arc motion, thereby avoiding interference with the bag feeding mechanism and ensuring normal operation of the device.

[0054] The opening clamping mechanism has:

[0055] The support plate 302 is the mounting base of the entire mechanism; the crank 303 is rotatably mounted on the support plate 302; the driving mechanism can drive the clamping jaw; the driving mechanism can push the push block of the clamping jaw to drive the movement of the clamping jaw by driving the crank 303.

[0056] The driving mechanism has: a first connecting rod 305, the first end of which is hinged with the crank 303; a second connecting rod 306, the middle part of which is rotatably mounted on the support plate 302; the second end of the first connecting rod 305 is hinged with the first end of the second connecting rod 306; a third connecting rod 307, the first end of which is hinged with the second end of the second connecting rod 306; a fourth connecting rod 308, the first end of which is hinged on the support plate 302, and the second end of the fourth connecting rod 308 is hinged with the second end of the third connecting rod 307; when moving, the first connecting rod 305 drives the second connecting rod 306 to rotate, and the third connecting rod 307 and the fourth connecting rod 308 ensure the stability of the second connecting rod 306 when moving. The second connecting rod 306, the third connecting rod 307 and the fourth connecting rod 308 form a parallelogram, which ensures the stability when moving, and at the same time, the direction of the third connecting rod 307 remains unchanged, which is convenient for the push block 310 mounted on the third connecting rod 307 to stably push the clamping jaw.

[0057] The fixed block 309 is fixedly mounted on the third connecting rod 307; the fixed block 309 moves by the connecting rod mechanism.

[0058] The pushing block 310 is installed on the fixed block 309, and the pushing block 310 can push the pushing rod of the clamping jaw. The fixed block 309 drives the pushing block 310 to move, and the pushing block 310 pushes the pushing block of the clamping jaw, thereby driving the movement of the clamping jaw.

[0059] The support plate 302 is provided with two groups of driving mechanisms, and the two groups of driving mechanisms can respectively drive two groups of bag clamping mechanisms, thereby being high in working efficiency.

[0060] The opening and clamping stand 301 is further provided, and the support plate 302 is installed on the opening and clamping stand 301. The driving shaft 304 is rotatably installed on the opening and clamping stand 301, the first end of the driving shaft 304 is fixedly connected with the first end of the crank 303, and the second end of the crank 303 is hingedly connected with the first end of the first connecting rod 305. The height of the opening and clamping mechanism is adjusted through the opening and clamping stand 301, so as to adapt to the position requirement of the packaging machine. The driving shaft 304 in the opening and clamping stand 301 is a driving power component, and drives the movement of the whole mechanism.

[0061] The first connecting rod 305 and the fourth connecting rod 308 include a threaded rod in the middle and ball heads at two ends, and the ball heads at two ends are adjustably connected with the threaded rod. The first connecting rod 305 and the fourth connecting rod 308 can adjust the length.

[0062] The pushing block 310 is connected with the fixed block 309 through a connecting pin, and the connection is detachable, so that maintenance is convenient.

[0063] When moving, the first connecting rod 305 drives the second connecting rod 306 to rotate, and the third connecting rod 307 and the fourth connecting rod 308 ensure the stability of the second connecting rod 306 when moving. The driving mechanism is driven by the crank 303, and the driving mechanism can push the pushing block of the clamping jaw, thereby driving the movement of the clamping jaw.

[0064] After the above structure is adopted, the bag clamping device can be applied to the upper layer of the double-layer bag clamping device, and the working efficiency is greatly improved by arranging the double-layer bag clamping device.

[0065] The double-layer bag clamping device has:

[0066] The center rotating shaft 401, the upper clamping jaw 403 and the lower clamping jaw 404 are arranged on the center rotating shaft 401, and a series of clamping assemblies capable of clamping packaging bags are arranged on the upper clamping jaw 403 and the lower clamping jaw 404. The upper clamping jaw 403 and the lower clamping jaw 404 are driven to rotate by the center rotating shaft 401, so as to complete the bag clamping action of the vacuum packaging machine, and the upper clamping jaw 403 and the lower clamping jaw 404 work simultaneously, thereby greatly improving the working efficiency.

[0067] The center rotating shaft 401 is provided with the positioning disc 402, and the upper clamping jaw 403 and the lower clamping jaw 404 are installed on the positioning disc 402. The upper clamping jaw 403 and the lower clamping jaw 404 are positioned by the positioning disc 402.

[0068] One clamping assembly comprises:

[0069] Two opposite setting rotating blocks 406 are installed on the positioning disc 402; the rotating blocks 406 can rotate on the positioning disc 402; the fixed clamping arms 408 are arranged on the rotating blocks; the fixed clamping blocks 409 are arranged on the fixed clamping arms 408; the movable clamping arms 410 are movably installed in the fixed clamping arms 408; the movable clamping blocks 411 are installed on the movable clamping arms 410; the movable clamping arms 410 can be clamped with the fixed clamping arms 408 to clamp the packaging bag. The fixed clamping blocks 409 and the movable clamping blocks 411 clamp the packaging bag.

[0070] The rotating blocks are rotatably installed on the positioning disc 402 through the clamping jaw rotating shaft 405, and a rotating mechanism for driving the rotating blocks is further arranged. The rotating mechanism drives the rotating blocks to rotate around the clamping jaw rotating shaft 405, so that the pair of clamping assemblies can rotate. Through the rotation of the pair of clamping assemblies, the two sides of the packaging bag opening can slightly move relatively, which is convenient for the subsequent bag opening mechanism to open the bag and facilitates the opening of the bag opening for the convenience of putting in the material.

[0071] The rotating mechanism comprises:

[0072] The tooth blocks 407 are arranged on the two opposite rotating blocks respectively, and the two tooth blocks 407 are meshed with each other; the rotating block pushing blocks 417 are arranged on one tooth block 407; and the rotating driving mechanism can drive the rotating block pushing blocks 417 to move and thus drive the tooth blocks 407 to rotate. Through the rotating driving mechanism, the rotating block pushing blocks 417 are driven to move and thus the tooth blocks 407 are driven to rotate, so that the pair of clamping assemblies can rotate, and the two sides of the packaging bag opening can slightly move relatively, which is convenient for the subsequent bag opening mechanism to open the bag and facilitates the opening of the bag opening for the convenience of putting in the material.

[0073] The rotating driving mechanism comprises:

[0074] The pushing installation blocks 413 are installed on the positioning disc 402, and the pushing installation blocks 413 serve as the installation basis of other structures; the pushing swing arms 414 are hinged to the pushing installation blocks 413 near the middle portions thereof; the swing arm pushing wheels 416 are arranged on the first ends of the pushing swing arms 414, and the swing arm pushing wheels 416 can push the rotating block pushing blocks 417. Through the hinging of the middle portions of the pushing swing arms 414 to the pushing installation blocks 413, the swing arm pushing wheels 416 on the first ends of the pushing swing arms 414 push the rotating block pushing blocks 417, so as to drive the tooth blocks 407 to rotate and realize the rotation of the pair of clamping assemblies. Through the connecting rod mechanism, the rotating block pushing blocks can be driven to move, so that the two sides of the packaging bag opening can slightly move relatively, which is convenient for the subsequent bag opening mechanism to open the bag and facilitates the opening of the bag opening for the convenience of putting in the material.

[0075] Also has upper and lower layer synchronization mechanism, upper and lower layer synchronization mechanism includes swing linkage rod 419, both ends of swing linkage rod 419 are hinged with the push swing arm 414 of upper and lower layer respectively.Swing linkage rod 419 can be linked with the push swing arm 414 of upper and lower layer, so that the push swing arm 414 of upper and lower layer is consistent, and is transmitted to the clamp jaw, so that the clamp jaw of upper and lower layer moves synchronously.

[0076] The second end of the push swing arm 414 of lower layer is provided with a swing push wheel 418, and the swing push wheel 418 is driven by a power mechanism.The power mechanism is a cam mechanism, and the swing push wheel 418 is driven to move by the movement of the cam.

[0077] The movable clamping arm 410 is provided with a clamping push wheel 412, and the fixed clamping arm 408 is provided with a groove for the clamping push wheel 412 to move.The clamping push wheel 412 moves to drive the clamp jaw to clamp or release.The clamping push wheel 412 is also driven by a cam mechanism, and the clamping push wheel 412 is driven by the cam mechanism to drive the clamp jaw to clamp or release.

[0078] After adopting the above structure, the double-layer bag clamping device can clamp and package bags synchronously, has high work efficiency and good synchronism.

[0079] The bag opening device has a bag opening support 513 and two sets of bag opening mechanisms arranged at different heights on the bag opening support 513.Through the arrangement of the upper and lower two sets of bag opening mechanisms, the upper and lower two sets of bag opening mechanisms can package simultaneously, and the work efficiency is greatly improved.

[0080] The bag opening mechanism has a bag opening first linkage mechanism and a bag opening second linkage mechanism, and the bag opening first linkage mechanism and the bag opening second linkage mechanism are provided with a bag suction pipe 511 adapted thereto, and the bag suction pipe 511 is provided with a bag opening suction disc 512 capable of adsorbing a packaging bag.

[0081] The bag opening mechanism has a bag opening first linkage mechanism and a bag opening second linkage mechanism, and the bag opening first linkage mechanism and the bag opening second linkage mechanism are provided with a bag suction pipe 511 adapted thereto, and the bag suction pipe 511 is provided with a bag opening suction disc 512 capable of adsorbing a packaging bag.

[0082] The first bag opening connecting rod mechanism has: a first bag opening connecting rod 502, whose first end is fixed on the bag opening rotating shaft 501; a second bag opening connecting rod 503, whose first end is hingedly connected with the second end of the first bag opening connecting rod 502; a third bag opening connecting rod 504, whose first end is hingedly connected with the second end of the second bag opening connecting rod 503; and the second end of the third bag opening connecting rod 504 is rotatably installed on the bag opening fixing shaft 505. A bag suction pipe 511 is installed on the second bag opening connecting rod 503. The bag opening rotating shaft 501 rotates to drive the first bag opening connecting rod 502 to move, thereby driving the second bag opening connecting rod 503 and the third bag opening connecting rod 504 to move, and driving the bag suction pipe 511 installed on the second bag opening connecting rod 503 to move, so as to realize the approach and separation of the bag suction pipe 511 and the bag opening suction disc 512. The first bag opening connecting rod 502, the second bag opening connecting rod 503 and the third bag opening connecting rod 504 form a quadrilateral, and the movement process is stable and reliable.

[0083] The second bag opening connecting rod mechanism has: a sixth bag opening connecting rod 508, whose first end is rotatably installed on the bag opening fixing shaft 505; a seventh bag opening connecting rod 509, whose first end is hingedly connected with the second end of the sixth bag opening connecting rod 508; an eighth bag opening connecting rod 510, whose first end is hingedly connected with the second end of the seventh bag opening connecting rod 509; and the second end of the eighth bag opening connecting rod 510 is rotatably installed on the bag opening rotating shaft 501. The sixth bag opening connecting rod 508 moves to drive the seventh bag opening connecting rod 509 and the eighth bag opening connecting rod 510 to move, thereby driving the bag suction pipe 511 installed on the seventh bag opening connecting rod 509 to move, so as to realize the approach and separation of the bag suction pipe 511 and the bag opening suction disc 512. The sixth bag opening connecting rod 508, the seventh bag opening connecting rod 509 and the eighth bag opening connecting rod 510 form a quadrilateral, and the movement process is stable and reliable.

[0084] When the bag opening suction disc 512 of the first bag opening connecting rod mechanism and the second bag opening connecting rod mechanism is adsorbed to the bag body, the axes of the bag opening suction disc 512 of the first bag opening connecting rod mechanism and the second bag opening connecting rod mechanism are collinear; when the bag opening suction disc 512 of the first bag opening connecting rod mechanism and the second bag opening connecting rod mechanism is separated, the axes of the bag opening suction disc 512 of the first bag opening connecting rod mechanism and the second bag opening connecting rod mechanism are not collinear. As shown in Figure 24 and Figure 27 shown in Figure 24In the middle, the bag body is adsorbed, the axes of the bag opening suction cups 512 of the bag opening first linkage mechanism and the bag opening second linkage mechanism are collinear, the bag body is relatively squeezed and adsorbed, and after the bag body is adsorbed, the bag opening first linkage mechanism and the bag opening second linkage mechanism are separated, so that the bag opening is realized. When the bag opening first linkage mechanism and the bag opening second linkage mechanism are separated, the axes of the bag opening suction cups 512 of the bag opening first linkage mechanism and the bag opening second linkage mechanism are not collinear. The quadrilateral structure of the bag opening second linkage mechanism has a swinging process in the later stage of movement, so that the axes of the bag opening suction cups 512 of the bag opening first linkage mechanism and the bag opening second linkage mechanism are not collinear. The purpose is that the bag opening second linkage mechanism can avoid other structures on the packaging machine. The linear motion mode in the traditional technology is changed, the movement range is reduced, and other structures on the packaging machine are avoided.

[0085] The bag opening second linkage mechanism driving mechanism can drive the bag opening sixth linkage 508 to rotate. The bag opening second linkage mechanism driving mechanism includes a bag opening fourth linkage 506 and a bag opening fifth linkage 507. The first end of the bag opening fourth linkage 506 is hinged to the bag opening first linkage 502. The second end of the bag opening fourth linkage 506 is hinged to the first end of the bag opening fifth linkage 507. The second end of the bag opening fifth linkage 507 is fixedly connected to the first end of the bag opening sixth linkage 508. The bag opening second linkage mechanism driving mechanism adopts the linkage mode of the bag opening first linkage mechanism, realizes linkage of the bag opening first linkage mechanism and the bag opening second linkage mechanism, has good synchronization, and is stable and reliable in work.

[0086] The bag opening second linkage 503 and the bag opening seventh linkage 509 are "T" shaped. The two sides of the "T" shaped linkage are hinged to the linkages on the two sides. The middle part of the "T" shaped linkage is fixedly installed with a bag suction pipe 511.

[0087] The bag opening shaft 501 rotates, drives the bag opening first linkage 502 to move, links the bag opening second linkage 503 and the bag opening third linkage 504 to move, thereby drives the bag suction pipe 511 installed on the bag opening second linkage 503 to move, realizes approaching and separation of the bag suction pipe 511 and the bag opening suction cup 512. The bag opening first linkage 502, the bag opening second linkage 503, and the bag opening third linkage 504 form a quadrilateral, and the movement process is stable and reliable. The bag opening first linkage mechanism links the bag opening second linkage mechanism to move, realizes approaching and separation of a pair of bag suction pipes 511 and bag opening suction cups 512.

[0088] One of the above technical solutions has the following advantages or beneficial effects. The double-layer bag opening device has high work efficiency and good synchronization. Through the arrangement of the upper and lower bag opening mechanisms, the upper and lower layers can be synchronously packaged. The upper and lower bag opening mechanisms simultaneously open the bag, which greatly improves the work efficiency. Meanwhile, the upper and lower layers are driven by the same bag opening shaft 501, have good synchronization, are stable and reliable in work, can avoid other components of the packaging machine, and prevent interference.

[0089] A bag supporting structure has a support 601, an upper bag supporting mechanism and a lower bag supporting mechanism arranged on the support 601, and the upper bag supporting mechanism and the lower bag supporting mechanism can respectively support an upper layer of packaging bags and a lower layer of packaging bags. By supporting the upper layer of packaging bags and the lower layer of packaging bags through the upper bag supporting mechanism and the lower bag supporting mechanism, double-layer packaging bags can be arranged, and the upper layer of packaging bags and the lower layer of packaging bags can be simultaneously supported, thereby greatly improving work efficiency.

[0090] The upper bag supporting mechanism has a pair of upper clamping arms 602 rotatably installed on the support 601, upper bag supporting rods 604 connected with the upper clamping arms 602, and upper bag clamps 605 connected with the upper bag supporting rods 604. A pair of upper bag clamps 605 can support the upper layer of packaging bags. By driving the upper bag clamps 605 through the upper clamping arms 602, and then driving the upper bag clamps 605 through the pair of upper clamping arms 602, the pair of upper bag clamps 605 can be driven to support the packaging bags.

[0091] The lower bag supporting mechanism has a pair of lower clamping arms 607 rotatably installed on the support 601, lower bag supporting rods 609 connected with the lower clamping arms 607, and lower bag clamps 610 connected with the lower bag supporting rods 609. A pair of lower bag clamps 610 can support the lower layer of packaging bags. By driving the lower bag clamps 610 through the lower clamping arms 607, and then driving the lower bag clamps 610 through the pair of lower clamping arms 607, the pair of lower bag clamps 610 can be driven to support the packaging bags.

[0092] The upper clamping arms 602 are further provided with upper pushing ends 603, and a bag supporting driving mechanism is arranged to push the upper pushing ends 603. The lower clamping arms 607 are further provided with lower pushing ends 608, and the bag supporting driving mechanism can push the lower pushing ends 608. By simultaneously pushing the upper pushing ends 603 and the lower pushing ends 608 through the bag supporting driving mechanism, the upper bag clamps 605 and the lower bag clamps 610 can be driven, and the upper layer of packaging bags and the lower layer of packaging bags can be simultaneously supported. The upper and lower bag supporting mechanisms are driven by the same driving mechanism, have good synchronism, and are stable and reliable in work.

[0093] The bag supporting driving mechanism has a bag supporting swing rod 606 rotatably installed on the support 601, and the bag supporting swing rod 606 is provided with an upper swing end 6061 and a lower swing end 6062. The upper swing end 6061 can drive the upper pushing ends 603, and the lower swing end 6062 can drive the lower pushing ends 608. The upper and lower bag supporting mechanisms are driven by the same driving mechanism, have good synchronism, and are stable and reliable in work.

[0094] The bag supporting swing rod 606 is further provided with a driving end 6063, and a bag supporting power mechanism is arranged to drive the driving end 6063. The bag supporting power mechanism is a bag supporting pull rod 612. The bag supporting swing rod 606 is pulled to swing by the bag supporting pull rod 612, and power is transmitted to the bag supporting mechanism.

[0095] The upper swing end 6061 and the lower swing end 6062 are both provided with rotatable swing push wheels, which can reduce friction during pushing and make the activity more stable and reliable. The upper clamping arm 602 and the lower clamping arm 607 are further provided with a tension spring connected with the support 601, and the tension spring is used to realize the return of the upper bag supporting clamp 605 and the lower bag supporting clamp 610.

[0096] The upper clamping arm 602 is connected with the upper bag supporting support 604 through an upper bag supporting arm 6021, and the lower clamping arm 607 is connected with the lower bag supporting support 609 through a lower bag supporting arm 611.

[0097] The upper and lower bag supporting clamps can support the upper and lower packaging bags. The upper and lower bag supporting clamps are driven by the upper and lower clamping arms, and then the upper and lower bag supporting clamps are driven by the upper and lower clamping arms. A pair of upper and lower bag supporting clamps are driven by a pair of upper and lower clamping arms, so as to support the packaging bags. The upper and lower packaging bags are supported by the upper bag supporting mechanism and the lower bag supporting mechanism, respectively. Double-layer packaging bags can be packaged, and the upper and lower packaging bags can be supported at the same time, which greatly improves the work efficiency.

[0098] After the above structure is adopted, the double-layer bag supporting device can be used to package double-layer packaging bags, and the work efficiency is greatly improved. The upper and lower bag supporting mechanisms are driven by the same driving mechanism, and the synchronization is good, and the work is stable and reliable.

[0099] The vacuum chamber structure has a box body 701, two groups of packaging cavities are arranged in the box body 701, a heat sealing assembly 703 is arranged in each packaging cavity, and a clamping assembly 704 is arranged in each packaging cavity. Two groups of packaging cavities can be used to package two packaging bags at the same time, which greatly improves the work efficiency. The box cover 702 can cover the box body 701 and plays a sealing role.

[0100] The clamping assembly 704 has a bag clamping shaft 7043 rotatably arranged in the packaging cavity, a bag clamping block 7044 arranged on the first end of the bag clamping shaft 7043, and a bag clamping seat 7045 arranged in the packaging cavity. The bag clamping seat 7045 can cooperate with the bag clamping block 7044 to clamp the packaging bag. The bag clamping shaft 7043 is rotated to drive the bag clamping block 7044 and the bag clamping seat 7045 to cooperate, so as to clamp or release the packaging bag.

[0101] The heat sealing assembly 703 has a heat sealing block 7032 movably installed in the packaging cavity, and a heat sealing driving mechanism capable of driving the heat sealing block 7032 to move. The heat sealing block 7032 is driven by the heat sealing driving mechanism to press the packaging bag, so that the packaging bag is heat sealed.

[0102] The bag clamping driving mechanism is capable of driving the bag clamping rotating shaft 7043 to rotate. The bag clamping driving mechanism includes a bag clamping cylinder 7041, and a piston rod of the bag clamping cylinder 7041 is connected with the bag clamping rotating shaft 7043 through a bag clamping connecting rod 7042. The bag clamping rotating shaft 7043 is driven by the bag clamping cylinder 7041 to rotate, so that the bag clamping is realized. The bag clamping driving mechanism can also adopt other mechanisms, for example, a driving motor drives the bag clamping rotating shaft 7043 to rotate.

[0103] The heat sealing driving mechanism is a heat sealing cylinder 7031, and a piston rod of the heat sealing cylinder 7031 is connected with the heat sealing block 7032. The heat sealing block 7032 is pushed by the heat sealing cylinder 7031 to press the bag opening, so that the sealing is realized. Other driving mechanisms can also be used, for example, a hydraulic cylinder, a push rod, etc.

[0104] The opening driving mechanism is also capable of driving the box cover 702 to move. The opening driving mechanism has an opening motor 7051 installed on the box body 701, an opening swing arm 7052 with a first end fixedly connected with a rotating shaft of the opening motor 7051, an opening connecting rod 7053 with a first end connected with a second end of the opening swing arm 7052, and a second end of the opening connecting rod 7053 connected with the box cover 702. When the opening motor 7051 rotates, the opening swing arm 7052 swings, the opening connecting rod 7053 is pulled, and the opening connecting rod 7053 pulls the box cover 702 to move. Other opening driving mechanisms can also be used, for example, a pull rod, a cylinder, etc.

[0105] The box body 701 is provided with two groups of packaging cavities, and two packaging bags can be simultaneously packaged in the two groups of packaging cavities, so that the work efficiency is greatly improved. The bag clamping rotating shaft 7043 rotates to drive the bag clamping block 7044 and the bag clamping seat 7045 to cooperate, so that the packaging bag can be clamped or released. The heat sealing block 7032 is pushed by the heat sealing cylinder 7031 to press the bag opening, so that the sealing is realized. The opening driving mechanism drives the box cover 702 to move.

[0106] After the above structure is adopted, two packaging bags can be simultaneously packaged in one vacuum chamber, so that the work efficiency is greatly improved.

[0107] The bag moving mechanism has:

[0108] The tracking arm 801 is rotatably mounted at the first end thereof on the rack cylinder. The first end of the tracking arm 801 can move back and forth around the rack cylinder, so that the tracking arm 801 can follow the rotation of the vacuum chamber. The tracking secondary pull rod 802 is hingedly connected at the first end thereof to the tracking arm 801, and the tracking secondary pull rod 802 can drive the tracking arm 801 to move; the tracking arm 801 is pushed by the tracking secondary pull rod 802, so that the tracking arm 801 moves back and forth around the rack cylinder.

[0109] The first bag conveying arm 805 is hingedly connected at the middle portion thereof to the first end of the tracking arm 801. The first bag conveying pull rod 803 is hingedly connected at the first end thereof to the first end of the first bag conveying arm 805, and the first bag conveying pull rod 803 can drive the first bag conveying arm 805 to move; the first bag conveying arm 805 is pulled by the first bag conveying pull rod 803, so that the first bag conveying arm 805 swings around the tracking arm 801, and the packaging bag is conveyed from the bag clamping mechanism to the vacuum chamber for vacuumizing.

[0110] The second bag conveying arm 806 is hingedly connected at the middle portion thereof to the first end of the tracking arm 801. The second bag conveying pull rod 804 is hingedly connected at the first end thereof to the first end of the second bag conveying arm 806, and the second bag conveying pull rod 804 can drive the second bag conveying arm 806 to move; the second bag conveying arm 806 is pulled by the second bag conveying pull rod 804, so that the second bag conveying arm 806 swings around the tracking arm 801, and the packaging bag is conveyed from the bag clamping mechanism to the vacuum chamber for vacuumizing.

[0111] The first clamping plate 807 is arranged on the second end of the first bag conveying arm 805, and the first clamping plate 807 can clamp the packaging bag. The second clamping plate 808 is arranged on the second end of the second bag conveying arm 806, and the second clamping plate 808 can clamp the packaging bag. The length of the first bag conveying arm 805 is greater than the length of the second bag conveying arm 806, and the first clamping plate 807 and the second clamping plate 808 are arranged at different heights. By arranging the first bag conveying arm 805 and the second bag conveying arm 806, the first clamping plate 807 and the second clamping plate 808 at different heights, the clamping components can adapt to the double-layer vacuum chamber at different heights, and by arranging the upper and lower double-layer bag moving mechanism, the vacuum packaging machine can adapt to the double-layer vacuum chamber, and the working efficiency is greatly improved.

[0112] The first support 809 is arranged on the second end of the tracking arm 801, and the first bag conveying arm 805 is arranged on the first support 809. The second support 810 is arranged on the second end of the tracking arm 801, and the second bag conveying arm 806 is arranged on the second support 810. The first support 809 and the second support 810 have the function of mounting and fixing.

[0113] The first bag conveying arm 805 is further provided with a groove 8051 which avoids the interference with the second bag conveying arm 806. The double-arms may interfere with each other, and the groove 8051 can avoid the interference.

[0114] The tracking sub-pull rod 802 pushes the tracking swing arm 801 to drive the tracking swing arm 801 to move back and forth around the frame cylinder. The first bag conveying pull rod 803 pulls the first bag conveying swing arm 805 to swing around the tracking swing arm 801 to realize the conveying of the packaging bag from the bag clamping mechanism to the vacuum chamber for vacuumizing. The second bag conveying pull rod 804 pulls the second bag conveying swing arm 806 to swing around the tracking swing arm 801 to realize the conveying of the packaging bag from the bag clamping mechanism to the vacuum chamber for vacuumizing. By setting the first bag conveying swing arm 805 and the second bag conveying swing arm 806 at different heights, the first clamping plate 807 and the second clamping plate 808, the clamping part is adapted to the double-layer vacuum chamber at different heights, and by setting the upper and lower double-layer bag moving mechanism, the vacuum packaging machine adapted to the double-layer vacuum chamber has greatly improved work efficiency.

[0115] After adopting the above structure, by setting the upper and lower double-layer bag moving mechanism, the vacuum packaging machine adapted to the double-layer vacuum chamber has greatly improved work efficiency.

[0116] The bag moving drive mechanism has:

[0117] The first drive cam 811, the second drive cam 817 and the third drive cam 823 are rotationally installed on the frame, and the first drive cam 811, the second drive cam 817 and the third drive cam 823 are each provided with a guide groove; the guide groove is not shown in the figure, and an irregular annular ring is arranged on the guide groove. By changing the shape and position, the positions of the first swing arm 812, the second swing arm 818 and the third swing arm 824 are changed to realize the swinging of the first swing arm 812, the second swing arm 818 and the third swing arm 824.

[0118] The first swing arm 812, the second swing arm 818 and the third swing arm 824 are respectively slidably installed at the first end of the first drive cam 811, the second drive cam 817 and the third drive cam 823; the middle part of the first swing arm 812, the second swing arm 818 and the third swing arm 824 is rotationally installed on the frame; the middle part of the first swing arm 812, the second swing arm 818 and the third swing arm 824 swings around the frame to realize the driving function.

[0119] The bag moving first connecting rod mechanism, the bag moving second connecting rod mechanism and the bag moving third connecting rod mechanism are connected with the second end of the first swing arm 812 and the first bag conveying pull rod 803; the bag moving second connecting rod mechanism is connected with the second end of the second swing arm 818 and the second bag conveying pull rod 804; and the bag moving third connecting rod mechanism is connected with the second end of the third swing arm 824 and the tracking sub-pull rod. The cam drives the connecting rod mechanism, and the connecting rod mechanism drives different pull rods to realize the driving action. The driving mechanism is changed from the air cylinder to the mechanical cam mechanism, the mechanical cam mechanism moves stably and reliably, and the packaging machine runs more stably and reliably, and has a long service life.

[0120] The first bag-moving connecting rod mechanism has: a first bag-feeding power pull rod 813, the first end of which is hinged to the first swing arm 812; a first push-pull arm 814, the first end of which is hinged to the second end of the first bag-feeding power pull rod 813; a first drive shaft 815, which is rotatably installed on the frame, the first end of the first drive shaft 815 being fixedly connected to the second end of the first push-pull arm 814; and a first bag-feeding swing rod 816, the first end of which is fixedly connected to the second end of the first drive shaft 815, the second end of the first bag-feeding swing rod 816 being hinged to the first bag-feeding pull rod 803. The first swing arm 812 drives the first bag-feeding pull rod 803, the first bag-feeding power pull rod 813 pulls the first push-pull arm 814, the first push-pull arm 814 drives the first drive shaft 815 to rotate, the first drive shaft 815 drives the first bag-feeding swing rod 816 to swing, and the first bag-feeding swing rod 816 finally drives the first bag-feeding power pull rod 813 to complete the bag-feeding action.

[0121] The second bag-moving connecting rod mechanism has: a second bag-feeding power pull rod 819, the first end of which is hinged to the second end of the second swing arm 818; a second push-pull arm 820, the first end of which is hinged to the second end of the second bag-feeding power pull rod 819; a second drive shaft 821, which is rotatably installed on the frame, the first end of the second drive shaft 821 being fixedly connected to the second end of the second push-pull arm 820; and a second bag-feeding swing rod 822, the first end of which is fixedly connected to the second end of the second drive shaft 821, the second end of the second bag-feeding swing rod 822 being hinged to the second bag-feeding pull rod 804. The second swing arm 818 drives the second bag-feeding pull rod 804, the second bag-feeding power pull rod 819 pulls the second push-pull arm 820, the second push-pull arm 820 drives the second drive shaft 821 to rotate, the second drive shaft 821 drives the second bag-feeding swing rod 822 to swing, and the second bag-feeding swing rod 822 finally drives the second bag-feeding power pull rod 819 to complete the bag-feeding action.

[0122] The third bag-moving connecting rod mechanism has: a tracking main pull rod 825, the first end of which is hinged to the second end of the third swing arm 824; a third push-pull arm 826, the first end of which is hinged to the second end of the tracking main pull rod 825; a third drive shaft 827, which is rotatably installed on the frame, the first end of the third drive shaft 827 being fixedly connected to the second end of the third push-pull arm 826; and a tracking swing rod 828, the first end of which is fixedly connected to the second end of the third drive shaft 827, the second end of the tracking swing rod 828 being hinged to the tracking secondary pull rod. The third swing arm 824 drives the tracking main pull rod 825, the tracking main pull rod 825 pulls the second push-pull arm 820, the second push-pull arm 820 drives the third drive shaft 827 to rotate, the third drive shaft 827 drives the second bag-feeding swing rod 822 to swing, and the second bag-feeding swing rod 822 finally drives the tracking swing rod 828 to complete the tracking swing action.

[0123] The first swing arm 812, the second swing arm 818 and the third swing arm 824 are "V" shaped, and the bottom of the "V" shape is rotatably installed on the rack. The first drive shaft 815, the second drive shaft 821 and the third drive shaft 827 are rotatably installed on the rack through bearings.

[0124] The cam drives the connecting rod mechanism, and the connecting rod mechanism drives different pull rods to realize the driving action. The driving mechanism is changed from a cylinder to a mechanical cam mechanism, the mechanical cam mechanism is stable and reliable in movement, the packaging machine is more stable and reliable in operation, and the service life is long.

[0125] After the above structure is adopted, the double-layer bag moving mechanism is arranged, the vacuum packaging machine suitable for a double-layer vacuum chamber is adopted, and the working efficiency is greatly improved. Meanwhile, the driving mechanism is changed from a cylinder to a mechanical cam mechanism, the mechanical cam mechanism is stable and reliable in movement, the packaging machine is more stable and reliable in operation, and the service life is long.

[0126] The packaging bag rack has:

[0127] The bottom plate 901 is a supporting component. The lifting plate 902 is installed on the bottom plate 901 in a lifting manner. The packaging bag is placed on the lifting plate 902. The lifting driving mechanism can drive the lifting plate 902 to lift. The lifting plate 902 is driven to lift by the lifting driving mechanism, and the different height requirements of different models of packaging bags are met.

[0128] The side plate 903 is installed on the bottom plate 901 in a translational sliding manner. The side plate 903 can limit the packaging bag. The translational driving mechanism can drive the side plate 903 to translate. The translational driving mechanism drives the side plate 903 to translate, so that the adjacent two side plates 903 reach different widths, and the use requirements of packaging bags of different widths are met. By changing the height and the width, the use requirements of packaging bags of different sizes can be met, the use is convenient, and the cost is low.

[0129] The lifting driving mechanism comprises a connecting seat 904, the connecting seat 904 is installed on the bottom plate 901, a lifting lead screw 905 is rotatably installed on the connecting seat 904, a lifting sliding block 906 is threadedly matched with the lifting lead screw 905, a supporting plate 907 is connected with the lifting sliding block 906, a supporting rod 908 has a first end connected with the supporting plate 907, and a second end of the supporting rod 908 is connected with the lifting plate 902. The lifting sliding block 906 is lifted by the rotation of the lifting lead screw 905, so as to drive the supporting plate 907 to lift, the supporting rod 908 on the supporting plate 907 supports the lifting plate 902, and the lifting of the lifting plate 902 is realized.

[0130] The translation driving mechanism comprises a translation screw rod 909 rotatably installed on the base, a translation sliding block 910 threadedly matched with the translation screw rod 909, and the side plate 903 fixedly connected with the translation sliding block 910. Through rotation of the translation screw rod 909, the translation sliding block 910 is driven to slide, thereby driving the side plate 903 to move and changing the width of the side plate 903.

[0131] The packaging bags are vertically stacked on the lifting plate 902. The problem of easy toppling of the vertical stack is solved.

[0132] The first end of the side plate 903 is provided with a limiting baffle for limiting the packaging bags, and the gap between the two baffles of the two side plates 903 constitutes a discharge port of the packaging bags. The two baffles limit the packaging bags, and when the suction mechanism adsorbs the packaging bags, the suction mechanism can make the packaging bags separate from the rack under the action of an external force through the gap between the two baffles and be sent into the packaging machine.

[0133] The second end of the side plate 903 is provided with a baffle 911 for blocking the packaging bags, which can limit the second side of the packaging bags.

[0134] The two sides of the translation screw rod 909 are provided with two external threads in opposite directions; the base plate 901 is provided with two side plates 903, the two side plates 903 are respectively connected with two translation sliding blocks 910, and the two translation sliding blocks 910 are respectively matched with the external threads on the two sides of the translation screw rod 909. The two reverse threads can make the two side plates 903 move in opposite directions during rotation of the translation screw rod 909, so that the gap between the two side plates 903 becomes larger or smaller, and the adjacent two side plates 903 reach different widths to adapt to the use requirements of packaging bags of different widths.

[0135] The translation driving mechanism drives the side plate 903 to translate, so that the adjacent two side plates 903 reach different widths to adapt to the use requirements of packaging bags of different widths. By changing the height and width, the use requirements of packaging bags of different sizes can be met, which is convenient to use and low in cost.

[0136] After the above structure is adopted, the use requirements of packaging bags of different sizes can be met, which is convenient to use and low in cost.

[0137] One of the above technical solutions has the following advantages or beneficial effects: the double-layer rotary vacuum chamber structure is provided, and a series of matching structures are provided, so that double-layer packaging can be realized, and the working efficiency is greatly improved.

[0138] In the description of the application, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0139] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwed" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0140] Although embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A double vacuum packaging machine, characterized in that, Have: Rack, which is provided with: The bag mechanism of the bag on the bag; The bag mechanism sends the packaging bag into the double-layer bag clamping device; Double-layer bag clamping device, which has a double-layer structure, can clamp the material below the bag body; Open clamping mechanism, which can drive the double-layer bag clamping device to open; Bag opening device, which can open the packaging bag clamped by the double-layer bag clamping device; Bag supporting structure, which can open the packaging bag after opening; Vacuum chamber, which is a double-layer structure, can vacuum the packaging bag; Bag moving mechanism, which can send the packaging bag filled with material into the vacuum chamber; The bag mechanism has: Material rack, which can place packaging bags; Sucker rack, which is provided with suction mechanism, can adsorb the packaging bag on the material rack; Movable driving mechanism, which can drive the sucker rack to translate; The bag clamping mechanism has: Rotary shaft, which is rotatably installed on the rack; Bag clamping first connecting rod, which is fixedly installed on the rotary shaft; Clamping mechanism, which is installed on the second end of the first connecting rod; The double-layer bag clamping device has: Center rotary shaft; Upper clamping jaw and lower clamping jaw, which are provided on the center rotary shaft; The upper clamping jaw and the lower clamping jaw are provided with a series of clamping components capable of clamping the packaging bag; The open clamping mechanism has: Supporting plate; Crank, which is rotatably installed on the supporting plate; Driving mechanism, which can drive the upper clamping jaw and the lower clamping jaw; The driving mechanism has: Open clamping first connecting rod, which is hinged with the crank at the first end; Open clamping second connecting rod, which is rotatably installed on the supporting plate near the middle; The second end of the open clamping first connecting rod is hinged with the first end of the open clamping second connecting rod; Open clamping third connecting rod, which is hinged with the second end of the open clamping second connecting rod at the first end; Open clamping fourth connecting rod, which is hinged on the supporting plate at the first end, and the second end of the open clamping fourth connecting rod is hinged with the second end of the open clamping third connecting rod; Fixed block, which is fixedly installed on the open clamping third connecting rod; Push block, which is installed on the fixed block, can push the upper clamping jaw and the lower clamping jaw.

2. The double vacuum packaging machine according to claim 1, characterized in that, The bag opening device has: Bag opening support; Bag opening mechanism, at least two groups of bag opening mechanisms are provided on the bag opening support at different heights.

3. The double vacuum packaging machine according to claim 2, characterized in that, The bag supporting structure has: Support; Upper bag supporting mechanism and lower bag supporting mechanism, which are provided on the support, can respectively support the upper packaging bag and the lower packaging bag.

4. The double vacuum packaging machine according to claim 3, characterized in that, The vacuum chamber has: Box body, which is provided with at least two groups of packaging cavities; Heat sealing component, which is provided in each packaging cavity; Clamping component, which is provided in each packaging cavity; Box cover, which can cover the box body.

5. The double vacuum packaging machine according to claim 4, characterized in that, The bag moving mechanism has: Tracking rotary arm; Tracking secondary pull rod, which is hinged with the tracking rotary arm at the first end, can drive the tracking rotary arm to move; First bag conveying swing arm, which is hinged on the first end of the tracking rotary arm near the middle; Second bag conveying swing arm, which is hinged on the first end of the tracking rotary arm near the middle; First bag conveying pull rod, which is hinged with the first end of the first bag conveying swing arm at the first end and can push the first bag conveying swing arm to move; Second bag conveying pull rod, which is hinged with the first end of the second bag conveying swing arm at the first end and can push the second bag conveying swing arm to move; A first clamping plate is arranged on the second end of the first bag conveying swing arm, and the first clamping plate can clamp the packaging bag. A second clamping plate is arranged on the second end of the second bag conveying swing arm, and the second clamping plate can clamp the packaging bag.

6. The double vacuum packaging machine according to claim 5, characterized in that, The movable driving mechanism of the bag placing mechanism comprises a bag placing fourth connecting rod, the bag placing first end of the bag placing fourth connecting rod is hinged to the suction disc holder, the bag placing fourth connecting rod is hinged to the machine frame, and the bag placing second end of the bag placing fourth connecting rod is connected to the power mechanism.

7. The double vacuum packaging machine according to claim 6, characterized in that, The machine frame is provided with a connecting shaft, the bag placing fourth connecting rod is rotatably arranged on the connecting shaft, the suction disc holder is provided with a bag placing first connecting rod, the bag placing first end of the bag placing fourth connecting rod is hinged to the bag placing first end of the bag placing first connecting rod, the bag placing mechanism further comprises a bag placing second connecting rod and a bag placing third connecting rod, the bag placing first end of the bag placing second connecting rod is fixedly arranged on the connecting shaft, the bag placing first end of the bag placing third connecting rod is hinged to the bag placing second end of the bag placing second connecting rod, and the bag placing second end of the bag placing third connecting rod is hinged to the bag placing second end of the bag placing first connecting rod.

8. The double vacuum packaging machine according to claim 7, characterized in that, The bag placing first connecting rod, the bag placing second connecting rod, the bag placing third connecting rod and the bag placing fourth connecting rod of the bag placing mechanism enclose a parallelogram, the bag placing second connecting rod is horizontally arranged, the packaging bags are vertically stacked on the rack, the rear end of the rack is provided with a limiting baffle for limiting the packaging bags, the power mechanism is a push rod, the push rod can drive the bag placing second end of the bag placing fourth connecting rod to swing, the suction disc holder is provided with transverse and longitudinal suction disc mounting grooves, and a series of suction disc mounting holes are arranged in the suction disc mounting grooves.

9. The double vacuum packaging machine according to claim 8, characterized in that, The bag clamping mechanism further comprises a fixing shaft, the fixing shaft is fixedly arranged on the second end of the bag clamping first connecting rod, the clamping mechanism is arranged on the fixing shaft, the bag clamping mechanism further comprises a bag clamping second connecting rod, a bag clamping third connecting rod and a bag clamping fourth connecting rod, the first end of the bag clamping second connecting rod is rotatably arranged on the fixing shaft, the clamping mechanism is fixedly connected to the first end of the bag clamping second connecting rod, the first end of the bag clamping third connecting rod is hinged to the second end of the bag clamping second connecting rod, the first end of the bag clamping fourth connecting rod is hinged to the second end of the bag clamping third connecting rod, the bag clamping fourth connecting rod is arranged on the machine frame, the bag clamping fourth connecting rod is fixedly arranged on the machine frame, the bag clamping mechanism further comprises a bag clamping stand, the bag clamping stand is arranged on the machine frame, the second end of the bag clamping fourth connecting rod is fixedly arranged on the bag clamping stand, a rotating shaft is rotatably arranged in the bag clamping stand, a rotating sleeve is fixedly arranged on the first end of the bag clamping second connecting rod, the bag clamping first connecting rod, the bag clamping second connecting rod, the bag clamping third connecting rod and the bag clamping fourth connecting rod enclose a parallelogram, the clamping mechanism comprises a fixed clamping arm, a movable clamping arm, clamping blocks arranged at the ends of the fixed clamping arm and the movable clamping arm, and a clamping cylinder arranged on the fixed clamping arm and used for driving the movable clamping arm. The clamping blocks on the fixed clamping arm and the movable clamping arm can clamp the packaging bag.

10. The double vacuum packaging machine according to claim 9, characterized in that, The support plate of the opening clamp mechanism is provided with two groups of driving mechanisms; it also has an opening clamp stand, the support plate is installed on the opening clamp stand; a driving shaft is rotatably installed on the opening clamp stand, the first end of the driving shaft is fixedly connected with the first end of the crank, the second end of the crank is hingedly connected with the first end of the opening clamp first connecting rod; the opening clamp first connecting rod and the opening clamp fourth connecting rod comprise a threaded rod in the middle and ball heads at both ends, and the ball heads at both ends are adjustably connected with the threaded rod.

11. The double vacuum packaging machine according to claim 10, characterized in that, The center rotating shaft of the double-layer bag clamping device is provided with a positioning disc, the upper clamping jaw and the lower clamping jaw are installed on the positioning disc; one clamping assembly comprises: two oppositely arranged rotating blocks, the rotating blocks are installed on the positioning disc; a fixed clamping arm is arranged on the rotating block; a fixed clamping block is arranged on the fixed clamping arm; an movable clamping arm is movably installed in the fixed clamping arm; a movable clamping block is installed on the movable clamping arm, the movable clamping arm can cooperate with the fixed clamping arm to clamp the packaging bag; the rotating block is rotatably installed on the positioning disc through a clamping jaw rotating shaft, and a rotating mechanism for driving the rotating block is further arranged; the rotating mechanism comprises: a tooth block, each of the two oppositely arranged rotating blocks is provided with a tooth block, the two tooth blocks are meshed with each other; a rotating block push block is arranged on one tooth block; a rotating driving mechanism can drive the rotating block push block to move, so as to drive the tooth block to rotate; the rotating driving mechanism comprises: a pushing installation block installed on the positioning disc; a pushing swing arm is hingedly connected with the pushing installation block near the middle part; a swing arm pushing wheel is arranged on the first end of the pushing swing arm, and the swing arm pushing wheel can push the rotating block push block. The bag opening device has a bag opening mechanism, a first connecting rod mechanism and a second connecting rod mechanism; a bag suction pipe is arranged on the first connecting rod mechanism and the second connecting rod mechanism; a suction disc is arranged on the bag suction pipe, and the suction disc can adsorb a packaging bag; a bag opening rotating shaft can drive the first connecting rod mechanism and the second connecting rod mechanism; the first connecting rod mechanism has a bag opening first connecting rod, a first end of the bag opening first connecting rod is fixed on the bag opening rotating shaft; a bag opening second connecting rod, a first end of the bag opening second connecting rod is hingedly connected with a second end of the bag opening first connecting rod; a bag opening third connecting rod, a first end of the bag opening third connecting rod is hingedly connected with a second end of the bag opening second connecting rod; a second end of the bag opening third connecting rod is rotatably installed on a bag opening fixed shaft; the second connecting rod mechanism has a bag opening sixth connecting rod, a first end of the bag opening sixth connecting rod is rotatably installed on the bag opening fixed shaft; a bag opening seventh connecting rod, a first end of the bag opening seventh connecting rod is hingedly connected with a second end of the bag opening sixth connecting rod; a bag opening eighth connecting rod, a first end of the bag opening eighth connecting rod is hingedly connected with a second end of the bag opening seventh connecting rod; a second end of the bag opening eighth connecting rod is rotatably installed on the bag opening rotating shaft; when the suction disc of the first connecting rod mechanism and the second connecting rod mechanism adsorbs a bag body, the axes of the suction discs of the first connecting rod mechanism and the second connecting rod mechanism are collinear; when the suction discs of the first connecting rod mechanism and the second connecting rod mechanism are separated, the axes of the suction discs of the first connecting rod mechanism and the second connecting rod mechanism are not collinear.

12. The double vacuum packaging machine according to claim 11, characterized in that, ​ 13. The double vacuum packaging machine according to claim 12, characterized in that, The upper bag supporting mechanism of the bag supporting structure has a pair of upper clamping arms rotatably installed on the support, upper bag supporting rods connected with the upper clamping arms, and upper bag clamps connected with the upper bag supporting rods; the pair of upper bag clamps can support the upper layer of packaging bags; the lower bag supporting mechanism of the bag supporting structure has a pair of lower clamping arms rotatably installed on the support, lower bag supporting rods connected with the lower clamping arms, and lower bag clamps connected with the lower bag supporting rods; the pair of lower bag clamps can support the lower layer of packaging bags; the upper clamping arms are further provided with upper pushing ends, and a bag supporting driving mechanism is arranged to push the upper pushing ends; the lower clamping arms are further provided with lower pushing ends, and the bag supporting driving mechanism can push the lower pushing ends; the bag supporting driving mechanism has a bag supporting swing rod rotatably installed on the support, and the bag supporting swing rod is provided with an upper swing end and a lower swing end; the upper swing end can drive the upper pushing ends; and the lower swing end can drive the lower pushing ends.

14. The double vacuum packaging machine according to claim 13, characterized in that, The clamping assembly of the vacuum chamber has a bag clamping shaft rotatably installed in the packaging cavity, a bag clamping block arranged on a first end of the bag clamping shaft, and a bag clamping seat arranged in the packaging cavity and capable of clamping packaging bags in cooperation with the bag clamping block; the heat sealing assembly has a heat sealing block movably installed in the packaging cavity and a heat sealing driving mechanism capable of driving the heat sealing block to move; the bag clamping driving mechanism is further arranged to drive the bag clamping shaft to rotate; the bag clamping driving mechanism comprises a bag clamping cylinder, a piston rod of the bag clamping cylinder is connected with the bag clamping shaft through a bag clamping connecting rod; the heat sealing driving mechanism is a heat sealing cylinder, a piston rod of the heat sealing cylinder is connected with the heat sealing block; an unboxing driving mechanism is further arranged to drive the box cover to move; the unboxing driving mechanism has an unboxing motor installed on the box body, an unboxing swing arm with a first end fixedly connected with a rotating shaft of the unboxing motor, and an unboxing connecting rod with a first end connected with a second end of the unboxing swing arm; a second end of the unboxing connecting rod is connected with the box cover.

15. The double vacuum packaging machine according to claim 14, characterized in that, The first bag conveying swing arm of the bag conveying mechanism is longer than the second bag conveying swing arm; the first clamping plate and the second clamping plate are located at different heights; a first end of the tracking swing arm is rotatably installed on a rack cylinder; a first support is arranged on a second end of the tracking swing arm, and the first bag conveying swing arm is installed on the first support; a second support is arranged on the second end of the tracking swing arm, and the second bag conveying swing arm is installed on the second support; the first bag conveying swing arm is further provided with a groove for avoiding the second bag conveying swing arm.

16. The double vacuum packaging machine according to claim 15, characterized in that, The bag moving mechanism further has a bag moving driving mechanism, which has a first driving cam, a second driving cam and a third driving cam rotatably installed on the frame and each provided with a guide slot; a first swing arm, a second swing arm and a third swing arm, whose first ends are slidably installed in the guide slots of the first driving cam, the second driving cam and the third driving cam respectively; the first swing arm, the second swing arm and the third swing arm are rotatably installed on the frame near the middle portions thereof; a bag moving first connecting rod mechanism, a bag moving second connecting rod mechanism and a bag moving third connecting rod mechanism, the bag moving first connecting rod mechanism connecting the second end of the first swing arm and a first bag feeding pull rod; the bag moving second connecting rod mechanism connecting the second end of the second swing arm and a second bag feeding pull rod; the bag moving third connecting rod mechanism connecting the second end of the third swing arm and a tracking secondary pull rod. The bag moving first connecting rod mechanism has a first bag feeding power pull rod, whose first end is hingedly connected with the first swing arm; a first push-pull arm, whose first end is hingedly connected with the second end of the first bag feeding power pull rod; a first driving shaft rotatably installed on the frame, whose first end is fixedly connected with the second end of the first push-pull arm; a first bag feeding swing rod, whose first end is fixedly connected with the second end of the first driving shaft and whose second end is hingedly connected with the first bag feeding pull rod; the bag moving second connecting rod mechanism has a second bag feeding power pull rod, whose first end is hingedly connected with the second end of the second swing arm; a second push-pull arm, whose first end is hingedly connected with the second end of the second bag feeding power pull rod; a second driving shaft rotatably installed on the frame, whose first end is fixedly connected with the second end of the second push-pull arm; a second bag feeding swing rod, whose first end is fixedly connected with the second end of the second driving shaft and whose second end is hingedly connected with the second bag feeding pull rod; the bag moving third connecting rod mechanism has a tracking primary pull rod, whose first end is hingedly connected with the second end of the third swing arm; a third push-pull arm, whose first end is hingedly connected with the second end of the tracking primary pull rod; a third driving shaft rotatably installed on the frame, whose first end is fixedly connected with the second end of the third push-pull arm; a tracking swing rod, whose first end is fixedly connected with the second end of the third driving shaft and whose second end is hingedly connected with the tracking secondary pull rod.

17. The double vacuum packaging machine according to claim 16, characterized in that, The rack of the bag feeding mechanism has a bottom plate, a lifting plate slidably installed on the bottom plate, a packaging bag placed on the lifting plate, a side plate slidably installed on the bottom plate, the side plate being capable of limiting the packaging bag, a lifting driving mechanism capable of driving the lifting plate to lift, and a translation driving mechanism capable of driving the side plate to translate.

18. The double vacuum packaging machine according to claim 17, characterized in that, ​ 19. The double vacuum packaging machine according to claim 18, characterized in that, The lifting driving mechanism of the material rack of the upper bag mechanism comprises a connecting seat installed on the bottom plate, a lifting screw rod rotatably installed on the connecting seat, a lifting sliding block in threaded cooperation with the lifting screw rod, a support plate connected with the lifting sliding block, a support rod with a first end connected with the support plate and a second end connected with the lifting plate connector, the translation driving mechanism comprises a translation screw rod rotatably installed on the bottom plate, a translation sliding block in threaded cooperation with the translation screw rod, and the side plate is fixedly connected with the translation sliding block, the packaging bags are vertically stacked on the lifting plate, a baffle limiting the packaging bags is arranged on the first end of the side plate, the gap between the two baffles of the two side plates constitutes the discharge opening of the packaging bags, a baffle blocking the packaging bags is arranged on the second end of the side plate, two external threads with opposite rotation directions are arranged on the two sides of the translation screw rod, and two side plates are arranged on the bottom plate, the two side plates are respectively connected with the two translation sliding blocks, and the two translation sliding blocks are respectively adapted to the external threads on the two sides of the translation screw rod.

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