A floor-standing atmosphere fresh-keeping packaging machine

Abstract

The present application relates to a floor-standing atmosphere-controlled fresh-keeping packaging machine, and relates to the technical field of packaging machines. It includes a workbench, a work rack is fixed on the workbench, a film-coating mechanism is arranged on the work rack, a mounting seat is arranged on the workbench, the mounting seat is located below the film-coating mechanism, the mounting seat is hollow inside and a plurality of mounting slots are opened on the top, a placement box is arranged in each mounting slot, the placement box includes a support plate and an abutment plate of the same length as the packaging box, the support plate and the abutment plate are arranged in the mounting slot, each support plate and each abutment plate are parallel to each other, a connecting assembly is connected between the support plate and the abutment plate, a driving assembly is arranged in the mounting seat, the driving assembly is located below the placement box, the driving assembly is connected to the mounting seat, and the driving assembly drives the connecting assembly to drive the support plate and the abutment plate to move in a direction close to or away from each other. The present application has the effect that the mounting seat can accommodate packaging boxes of different widths and perform film sealing packaging.

Description

Technical Field

[0001] The present application relates to the field of packaging machines, and in particular to a floor-standing modified atmosphere fresh-keeping packaging machine. Background Art

[0002] The modified atmosphere fresh-keeping packaging machine is a food packaging machine that uses composite gas replacement fresh-keeping packaging technology. The principle of modified atmosphere packaging is to use a fresh-keeping mixed gas (multiple gases are mixed according to the characteristics of the material to be packaged) to replace the air in the packaging box or packaging bag, change the external environment of the material in the packager, inhibit the growth and reproduction of bacteria and microorganisms, slow down the metabolism of the material, and thus extend the freshness or shelf life of the material.

[0003] In the related art, a Chinese patent with authorization announcement number CN208102467U discloses a modified atmosphere fresh-keeping packaging machine, including a frame, a workbench, a top plate, a film feeding reel arranged on the side wall of the frame, a die assembly, and a heat sealing assembly. The die assembly includes a die seat, a die seat is provided with a die, a heat sealing support strip is provided in the die, and a handle is provided directly in front of the die seat; the heat sealing assembly is arranged directly above the die assembly and includes a drive plate, a heat sealing bottom plate, a cutting seat plate, and a sealing plate. A nut is fixedly installed on the drive plate, and a screw rod is screwed in the nut. The screw rod is driven to rotate by a motor arranged on the top plate through a reducer; the heat sealing bottom plate is arranged below the drive plate, and a heat sealing head adapted to the heat sealing support strip is provided on the bottom surface of the heat sealing bottom plate. The cutting seat plate is arranged below the drive plate, and a cutting knife is installed at the lower end of the cutting seat plate.

[0004] During operation, the packaging box is placed in the die, and the die assembly is pushed back into place, then the packaging machine is started, and the motor drives the screw to rotate through the reducer, driving the driving plate to descend. During this process, the sealing plate first contacts the upper surface of the die assembly, and then the driving plate continues to descend, driving the heat sealing bottom plate and the heat sealing head downward until the lower end surface of the heat sealing head is pressed against the heat sealing support bar to heat-seal the sealing film and the edge of the packaging box to complete the heat sealing. Then the driving plate continues to descend, pushing the cutting seat plate to drive the cutting knife to complete the punching of the sealing film. After the punching is completed, the motor reverses, and the driving plate rises, driving the heat sealing assembly as a whole to rise and leave the die assembly. The die assembly is pulled out of the working area of ​​the heat sealing assembly by the handle, and the packaging box is taken out of the die to complete a modified atmosphere packaging.

[0005] The concave mold (i.e., the placement box) can only accommodate one type of packaging box. If different types of packaging boxes need to be packaged, the packaging boxes cannot fit into the concave mold. Therefore, a concave mold with variable size is required to adapt to more sizes of packaging boxes by changing the size of the concave mold. Summary of the invention

[0006] In order to improve the problem of being unable to perform film sealing and packaging on packaging boxes of different widths and having poor applicability, the present application provides a floor-standing modified atmosphere fresh-keeping packaging machine.

[0007] The present application provides a floor-standing atmosphere-controlled fresh-keeping packaging machine that adopts the following technical solutions:

[0008] A floor-standing modified atmosphere fresh-keeping packaging machine, used for sealing a cover and a film on a packaging box, comprising:

[0009] Workbench;

[0010] A working frame is fixed on the working table, and a laminating mechanism is provided on the working frame;

[0011] A mounting seat is arranged on the workbench and is located below the laminating mechanism, wherein the interior of the mounting seat is hollow and the top is connected with a plurality of mounting grooves;

[0012] A plurality of placement boxes for placing packaging boxes, the placement boxes corresponding to the installation slots one by one, each of the placement boxes comprising a support plate and an abutment plate of equal length to the packaging box, the support plate and the abutment plate being located in the installation slot, each of the support plates and each of the abutment plates being parallel to each other, and a connection assembly being connected between the support plate and the abutment plate;

[0013] A driving assembly is arranged in the mounting seat and below the placement box. The driving assembly is connected to the mounting seat. The driving assembly drives the connecting assembly to drive the support plate and the abutment plate to move closer to or farther from each other.

[0014] By adopting the above technical solution, when working, the packaging box is placed in the placement box, and then the film covering mechanism is used to cover the packaging box with a sealing film, so as to realize the packaging of the packaging box. When it is necessary to package packaging boxes of different widths, the driving component is started to drive the connecting component to move, so that the support plate and the abutment plate move in a direction close to or away from each other at the same time, thereby changing the distance between the support plate and the abutment plate to meet the width of the packaging box. At this time, the packaging box is inserted between the support plate and the abutment plate, and the support plate and the abutment plate abut against the outer edge of the packaging box and support the packaging box, so as to realize the placement of the packaging box in the mounting seat, and then the film covering mechanism is started to cover the packaging box with a sealing film. In this process, the packaging box is not easily squeezed and bent to separate from the placement box, thereby realizing the sealing packaging of packaging boxes of different widths, and the applicability is good.

[0015] Optionally, the driving component includes:

[0016] Rotate the gear to rotate the connection in the mounting seat;

[0017] A plurality of transmission gears are rotatably connected in the mounting seat, the transmission gears are meshed with the rotating gears, and the connecting assembly is connected with the transmission gears.

[0018] By adopting the above technical solution, when the packaging box is placed in the mounting seat, the driving gear is rotated to make several transmission gears rotate at the same time, thereby driving several connecting components to move synchronously, so that the support plate and the abutment plate move towards or away from each other at the same time, so as to change the distance between the support plate and the abutment plate, so that the packaging box can be placed between the support plate and the abutment plate, and the support plate and the abutment plate support the two sides of the packaging box in the length direction, so that the packaging boxes of different width sizes can be stably placed on the mounting seat.

[0019] Optionally, each of the transmission gears is connected to a connecting assembly, and each of the connecting assemblies comprises:

[0020] A connecting gear, wherein the connecting gear is coaxially fixed with the transmission gear;

[0021] Two connecting racks are parallel to each other and meshed with the connecting gear, one of the connecting racks is connected to each support plate along the length direction of the connecting rack, and the other connecting rack is connected to each abutment plate along the length direction of the connecting rack.

[0022] By adopting the above technical solution, when the rotating gear rotates, it drives several transmission gears to rotate simultaneously, driving the connecting gears to rotate synchronously, thereby driving the connecting rack to move. Since the two connecting racks are located on both sides of the connecting gear, the two connecting racks move in opposite directions, that is, they can move towards or away from the connecting gear at the same time, thereby driving the support plate and the abutment plate to move towards or away from each other at the same time, so as to change the width of the placement box and meet the adaptive support for packaging boxes of different widths. The rotating gear drives several transmission gears to rotate in the same number of circles, that is, the number of circles rotated by several connecting gears is also equal, so that the distances moved by several connecting racks are consistent, and then several support plates and several abutment plates move at the same time and the moving distances are equal, thereby realizing the simultaneous adjustment of the widths of several placement boxes to meet the placement of packaging boxes with different widths, and the operation is convenient.

[0023] Optionally, a fixing component is provided on the mounting seat, and the fixing component includes:

[0024] A fixed rack, the fixed rack is slidably connected to the mounting seat and meshes with the rotating gear;

[0025] A limit rack, the limit rack is slidably connected to the mounting seat, and the limit rack can be meshed with the fixed rack;

[0026] A limit spring, one end of which is fixed to the mounting seat, and the other end of which is fixed to the limit rack, is used to push the limit rack toward the fixed rack.

[0027] By adopting the above technical solution, when packaging boxes of different widths need to be placed in the placement box, the limiting rack is manually pressed against the limiting spring so that the limiting rack is separated from the fixed rack, and then the fixed rack is moved so that the fixed rack moves along the length direction of the workbench, thereby driving the rotating gear to rotate, and then the connecting rack drives the support plate and the abutment plate to move in a direction close to or away from each other at the same time, changing the distance between the support plate and the abutment plate. When the width of the placement box can adapt to support packaging boxes of corresponding widths, the limiting rack moves in a direction close to the fixed rack under the action of the limiting spring until it meshes with the fixed rack, and the teeth on the limiting rack abut against the teeth on the fixed rack, which plays a limiting role, so that the fixed rack will not move along the length direction of the workbench, that is, the rotating rack will not rotate, so that the connecting rack is fixed in the mounting seat, and finally the support plate and the abutment plate are fixed in the mounting seat, thereby fixing the width of the placement box and increasing the stability of the supporting packaging box.

[0028] Optionally, a plurality of movable rods are provided in the mounting seat, the movable rods are perpendicular to the support plate, the ends of the movable rods are fixed to the mounting seat, a movable groove is provided at the bottom of the support plate, the movable groove is located at the end of the support plate, a sliding groove is provided at the bottom of the abutment plate, the sliding groove is located at the end of the abutment plate, the movable rods are penetrated by the movable grooves and the sliding grooves, and the support plate and the abutment plate can move on the movable rods.

[0029] By adopting the above technical solution, when the connecting rack drives the support plate and the abutment plate to move, the inner walls of the moving groove and the sliding groove abut and slide on the side wall of the moving rod, playing a limiting and guiding role, so that the support plate and the abutment plate always maintain a state of being parallel to each other and move along the length direction of the moving rod without offset, thereby increasing the stability of the movement of the support plate and the abutment plate. It also prevents the connecting rack from being separated from the connecting gear, thereby increasing the stability of the meshing of the connecting rack and the connecting gear.

[0030] Optionally, a plurality of support rods are sleeved on the movable rod, and matching holes are opened on the support rods. The movable rods pass through the matching holes, and the top walls of the support rods are flush with the top walls of the support plates. The support rods can move on the movable rods, and the support rods are located in the mounting grooves and between the support plates and the abutment plates.

[0031] By adopting the above technical solution, when the support plate and the abutment plate are adjusting the distance, the support rod is pushed to move, so that the distance between adjacent support rods changes to adapt to the distance between the support plate and the abutment plate. If the distance between the support plate and the abutment plate becomes larger, the support rod can be manually moved to change the distance between adjacent support rods. When the packaging box is adapted and inserted between the support plate and the abutment plate, the support plate and the abutment plate abut against both sides of the support packaging box in the length direction. At this time, the outer edges of both sides of the packaging box in the width direction abut against the support rod, and the support rod plays a supporting role. When the laminating mechanism performs film sealing and packaging on the packaging box, the two sides of the packaging box in the width direction are not easily deformed by pressure, which increases the stability of the packaging box when it is placed in the placement box for packaging.

[0032] Optionally, a limiting block is fixed on the inner wall of the matching hole on the support rod, and a limiting groove is provided on the side wall of the movable rod, and the limiting block is inserted in the limiting groove and can move in the limiting groove.

[0033] By adopting the above technical solution, when the support plate and the abutment plate push the support rod to move on the moving rod, the limit block moves in the limit groove, and the inner wall of the limit groove abuts against the side wall of the limit block, which plays a limiting and guiding role on the limit block, so that the support rod always maintains a vertical state and slides on the moving rod, and is not easy to tilt, so that the top wall of the support rod is always in the same plane with the top wall of the support plate, that is, the support rod can still provide stable support for the packaging box after moving, thereby increasing the stability of the movement of the support rod.

[0034] Optionally, a vacuum pump and an air pump are provided on the workbench, an air outlet and an air inlet are provided on the side wall of the mounting seat, the input end of the vacuum pump is aligned with the air outlet, and the output end of the air pump is aligned with the air inlet;

[0035] The laminating mechanism comprises:

[0036] A feeding roller, located on one side of the working frame;

[0037] A receiving roller is located at the other side of the working frame, a connecting hole is formed on the side wall of the working frame, and the sealing film on the feeding roller passes through the connecting hole and is connected to the receiving roller;

[0038] A rotating driving member is arranged on the working frame and is used to drive the feeding roller and the receiving roller to rotate;

[0039] A lifting drive member is connected to the work frame through a moving drive member, and the moving drive member is used to drive the lifting drive member to move up and down;

[0040] The heat sealing plate is connected to the output end of the lifting drive member, and the lifting drive member is used to drive the heat sealing plate to move up and down. The heat sealing plate is located above the sealing film, and the mounting seat is located below the sealing film. A cutting knife is provided on the bottom wall of the heat sealing plate, and the cutting knife is aligned with the moving rod.

[0041] By adopting the above technical solution, after the distance between the support plate and the abutment plate is adjusted, the moving drive member is started to drive the heat sealing plate to drive the sealing film to contact the top wall of the packaging box, and then the vacuum pump and the air delivery pump are used to extract the original air in the packaging box and fill it with nitrogen, and then the lifting drive member is started to drive the heat sealing plate to press down, and the heat sealing plate heat-seals the sealing film with the edge of the packaging box to complete the heat sealing. While the heat sealing plate moves downward, the cutting knife squeezes and cuts the sealing film, thereby cutting the sealing film on both sides of the width direction of the packaging box, and then cutting the sealing film on both sides of the length direction of the packaging box to complete the sealing film packaging of the packaging box. Then the moving drive member is driven to reset the heat sealing plate, and then the rotating drive member is started to make the feeding roller and the receiving roller rotate synchronously, so that the sealing film slides in the direction close to the receiving roller under the heat sealing plate until the complete sealing film on the feeding roller moves to the bottom of the heat sealing plate, so as to realize the automatic feeding of the sealing film used to package the packaging box.

[0042] Optionally, the support plate includes a fixing plate, a fixing sleeve and a fixing spring, the fixing sleeve is fixed on the connecting rack, the opening of the fixing sleeve faces upward, the fixing plate is inserted into the fixing sleeve, and the fixing spring is arranged in the fixing sleeve to push the fixing plate upward;

[0043] The abutment plate includes a positioning plate, a positioning sleeve and a positioning spring, wherein the positioning sleeve is fixed on the connecting rack, the opening of the positioning sleeve faces upward, the positioning plate is inserted into the positioning sleeve, and the positioning spring is arranged in the positioning sleeve for pushing the positioning plate upward;

[0044] A cutting knife is fixed on both the fixing sleeve and the positioning sleeve, and the top of the cutting knife is higher than the top of the fixing sleeve and the positioning sleeve, and lower than the top of the fixing plate and the positioning plate.

[0045] By adopting the above technical solution, when the distance between the support plate and the abutment plate is adjusted, the moving drive component is started to drive the heat sealing plate to drive the sealing film to contact the top wall of the packaging box, and then the vacuum pump and the air delivery pump are used to extract the original air in the packaging box and fill it with nitrogen, and then the lifting drive component is started to drive the heat sealing plate to press down, and the heat sealing plate heat-seals the sealing film with the edge of the packaging box to complete the heat sealing. In the process of pressing down the heat sealing plate, the fixed plate squeezes the fixed spring downward, and the positioning plate squeezes the positioning spring downward, thereby driving the packaging box and the sealing film on the upper surface of the packaging box to move downward together, while the height of the cutting knife remains unchanged, thereby realizing the cutting of the sealing film, and because the cutting knife moves with the support plate and the abutment plate, it can realize the cutting of the sealing film of packaging boxes of different widths after packaging.

[0046] Optionally, a rodless cylinder is provided on the workbench, and the output end of the rodless cylinder is connected to the bottom of the mounting seat, which is used to drive the mounting seat to move along the length direction of the workbench. A slide is fixed on the workbench, and a slide groove is opened on the bottom wall of the mounting seat along the length direction of the workbench. The slide is inserted in the slide groove, and the mounting seat can move on the slide.

[0047] By adopting the above technical solution, before use, the rodless cylinder is first used to drive the mounting seat to move along the length direction of the workbench, and the inner wall of the slide groove slides against the slide table to play a limiting and guiding role. The mounting seat can only move along the length direction of the workbench until the mounting seat moves out from under the heat sealing plate, so as to facilitate placing the packaging boxes in the placement box in sequence, and then the rodless cylinder is used to drive the mounting seat to reset and re-position it under the heat sealing plate to perform film sealing and packaging of the packaging box. After packaging is completed, the rodless cylinder is started to send the mounting seat out from under the heat sealing plate, and then the packaging box is taken out of the mounting seat, and finally the packaging of the packaging box is completed.

[0048] In summary, the present application includes at least one of the following beneficial effects:

[0049] 1. When the width of the packaging box changes, the driving assembly is started to drive the connecting assembly to move, so that the support plate and the abutting plate move towards or away from each other at the same time, thereby changing the distance between the support plate and the abutting plate. At this time, the packaging box is inserted between the support plate and the abutting plate, and the support plate and the abutting plate abut against the outer edge of the packaging box and support the packaging box to achieve placement of the packaging box in the mounting seat. Then, the film laminating mechanism is started to seal the sealing film on the packaging box. In this process, the packaging box is not easily squeezed and bent to separate from the placement box, thereby achieving film sealing packaging of packaging boxes of different widths, and having good applicability.

[0050] 2. When the fixed rack drives the rotating gear to rotate, several transmission gears rotate at the same time, driving the connecting gear to rotate synchronously, thereby driving the connecting rack to move. Since the two connecting racks are located on both sides of the connecting gear, the two connecting racks move in opposite directions, that is, they move toward or away from the connecting gear at the same time, thereby driving the support plate and the abutment plate to move toward or away from each other at the same time, so as to change the width of the placement box and meet the adaptive support for packaging boxes of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a back view of the floor-standing modified atmosphere fresh-keeping packaging machine according to an embodiment of the present application;

[0052] Figure 2 This is a front view of a floor-standing modified atmosphere fresh-keeping packaging machine according to an embodiment of the present application;

[0053] Figure 3A cross-sectional view showing the positional relationship between the mounting base and the work frame;

[0054] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0055] Figure 5 is a cross-sectional view of the internal structure of the mounting base;

[0056] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0057] Figure 7 It is a structural schematic diagram of the connection relationship between the placement box and the drive component;

[0058] Figure 8 It is a structural cross-sectional view showing the connection relationship between the fixed component and the driving component.

[0059] In the figure: 10, workbench; 20, work frame; 30, mounting seat; 31, mounting groove; 32, air outlet; 33, air inlet; 34, slide groove; 40, placement box; 41, support plate; 411, fixed plate; 412, fixed sleeve; 4121, moving groove; 413, fixed spring; 42, abutment plate; 421, positioning plate; 422, positioning sleeve; 4221, sliding groove; 423, positioning spring; 50, connecting assembly; 51, connecting gear; 52, connecting rack; 60, driving assembly; 61, rotating Gear; 62, transmission gear; 70, fixed assembly; 71, fixed rack; 72, limit rack; 73, limit spring; 80, laminating mechanism; 81, feeding roller; 82, receiving roller; 83, rotating drive member; 84, moving drive member; 85, lifting drive member; 86, heat sealing plate; 861, cutting knife; 90, support rod; 91, limit block; 110, moving rod; 111, limit groove; 120, cutting knife; 130, vacuum pump; 140, air pump; 150, rodless cylinder; 160, slide. DETAILED DESCRIPTION

[0060] The following is combined with Figure 1-8 This application is described in further detail.

[0061] The present application embodiment discloses a floor-standing atmosphere-controlled fresh-keeping packaging machine. Figure 1 and Figure 2The floor-standing modified atmosphere fresh-keeping packaging machine includes a workbench 10, on which a rodless cylinder 150 is fixed by bolts. The rodless cylinder 150 is arranged along the length direction of the workbench 10. Two slides 160 are fixed on the workbench 10. The slides 160 are parallel to the rodless cylinder 150, and the two slides 160 are arranged symmetrically with the rodless cylinder 150 as the axis. The output end of the rodless cylinder 150 is fixedly connected with a mounting seat 30. The rodless cylinder 150 can drive the mounting seat 30 to move along the length direction of the workbench 10. The inner wall of the mounting seat 30 is hollow, and a plurality of mounting grooves 31 are opened on the top wall. The mounting grooves 31 are evenly distributed on the mounting seat 30 and communicated with the inside of the mounting seat 30. A placement box 40 is arranged in the mounting groove 31.

[0062] Reference Figure 3 and Figure 4 A plurality of air holes are provided on the inner wall of the mounting groove 31, and the air holes are connected to the interior of the mounting seat 30. An air outlet hole 32 and an air inlet hole 33 are provided on the inner wall of the mounting seat 30. A work frame 20 is fixed on the workbench 10, and a vacuum pump 130 and an air delivery pump 140 are fixed on the work frame 20. The input end of the vacuum pump 130 is aligned with the air outlet hole 32, and the output end of the air delivery pump 140 is aligned with the air inlet hole 33.

[0063] Reference Figure 1 and Figure 2 , a laminating mechanism 80 is provided on the working frame 20, and the laminating mechanism 80 includes a feeding roller 81, a receiving roller 82, a rotating drive member 83, a lifting drive member 85 and a heat sealing plate 86. The feeding roller 81 and the receiving roller 82 are symmetrically arranged with the rodless cylinder 150 as the axis, and are both located on the outside of the working frame 20. The feeding roller 81 and the receiving roller 82 are both rotatably connected to the working frame 20. The feeding roller 81 is arranged along the length direction of the workbench 10, and the rotating drive member 83 is fixed to the outer wall of the working frame 20 by bolts. In the embodiment of the present application, the rotating drive member 83 adopts a double-bearing motor, and rotating bevel gears are coaxially fixed on the output ends of both ends of the double-bearing motor. The feeding roller 81 and the receiving roller 82 are coaxially fixed with transmission bevel gears at one end close to the double-bearing motor. The rotating bevel gears correspond to the transmission bevel gears one by one and mesh with the transmission bevel gears.

[0064] Reference Figure 2 and Figure 3 A mobile driving member 84 is fixed to the work frame 20 by bolts. In the embodiment of the present application, the mobile driving member 84 adopts a cylinder, and the output end of the mobile driving member 84 is vertically downward and fixedly connected to the lifting driving member 85, which is used to drive the lifting driving member 85 to move up and down. In the embodiment of the present application, the lifting driving member 85 adopts a cylinder, and the output end of the lifting driving member 85 is fixed to the heat sealing plate 86, which is used to drive the heat sealing plate 86 to move up and down. The heat sealing plate 86 is horizontally arranged and located above the mounting seat 30.

[0065] During operation, the rodless cylinder 150 is first started to drive the mounting seat 30 to move along the length direction of the workbench 10. The inner wall of the slide groove 34 slides against the slide 160 to play a limiting and guiding role. The mounting seat 30 can only move along the length direction of the workbench 10. During operation, the rodless cylinder 150 is started to move the mounting seat 30 out from under the heat sealing plate 86 to facilitate placing the packaging boxes in the placement box 40 in sequence. Then, the rodless cylinder 150 is used to drive the mounting seat 30 to reset so that it is re-located under the heat sealing plate 86. At this time, the input end of the vacuum pump 130 is aligned with the air outlet 32, and the output end of the air pump 140 is aligned with the air inlet 33.

[0066] Then, the rotating drive member 83 is started to make the feeding roller 81 and the receiving roller 82 rotate synchronously, so that the sealing film slides under the heat sealing plate 86 and close to the receiving roller 82, until the complete sealing film on the feeding roller 81 moves to the bottom of the heat sealing plate 86. Then, the moving drive member 84 is started to drive the heat sealing plate 86 to drive the sealing film to contact the top wall of the packaging box. After that, the vacuum pump 130 and the air pump 140 are used to extract the original air in the packaging box and fill it with nitrogen. The arrangement of the air holes can accelerate the gas flow. Then, the lifting drive member 85 is started to drive the heat sealing plate 86 to press down, and the heat sealing plate 86 heat-seals the sealing film with the edge of the packaging box to complete the heat sealing.

[0067] Reference Figure 5 and Figure 6 After the sealing film is heat-sealed on the packaging box, it is necessary to cut the sealing film. The placement box 40 includes a support plate 41 and an abutment plate 42. The support plate 41 and the abutment plate 42 are C-shaped plates arranged relatively to each other. The support plate 41 includes a fixed plate 411, a fixed sleeve 412 and a fixed spring 413. The fixed plate 411 and the fixed sleeve 412 are arranged in the installation groove 31 and the opening is upward. The fixed plate 411 is vertically inserted in the fixed sleeve 412. The fixed spring 413 is arranged in the fixed sleeve 412. One end of the fixed spring 413 is fixed to the inner wall of the fixed sleeve 412, and the other end is fixed to the fixed plate 411, so as to facilitate the fixed plate 411 to move up and down in the fixed sleeve 412. The abutment plate 42 includes a positioning plate 421, a positioning sleeve 422 and a positioning spring 423. The positioning sleeve 422 is arranged in the installation groove 31 and is parallel to the fixing sleeve 412. The positioning sleeve 422 is flush with the fixing sleeve 412 in height. The top of the positioning sleeve 422 is an open structure. The positioning plate 421 is inserted in the positioning sleeve 422. The positioning spring 423 is arranged in the positioning sleeve 422. One end of the positioning spring 423 is fixed to the positioning sleeve 422, and the other end is fixed to the positioning plate 421, so as to facilitate the positioning plate 421 to move up and down in the positioning sleeve 422.

[0068] Reference Figure 6 and Figure 7A cutting knife 120 is pre-set on the side of the fixed sleeve 412 and the positioning sleeve 422 away from each other. The blade of the cutting knife 120 extends along the length direction of the fixed sleeve 412 (or the positioning sleeve 422). The back of the cutting knife 120 is arranged vertically from bottom to top, and the blade is located between the fixed sleeve 412 and the fixed plate 411. A plurality of cutting knives 861 are fixed on the bottom wall of the heat sealing plate 86. The cutting knives 861 correspond to the ends of the fixed plate 411 one by one, and the cutting knives 861 correspond to the moving rods.

[0069] During operation, the packaging box is inserted between the fixing sleeve 412 and the positioning plate 421, and the edge of the packaging box in the length direction is mounted on the fixing plate 411 and the positioning plate 421. When the lifting drive member 85 drives the heat sealing plate 86 to press down, the heat sealing plate 86 heat-seals the sealing film with the edge of the packaging box, and at the same time, the fixing plate 411 squeezes the fixing spring 413 to move downward, and the positioning plate 421 squeezes the positioning spring 423 to move downward, thereby driving the packaging box and the sealing film on the upper surface of the packaging box to move downward together, while the height of the cutting knife 120 remains unchanged, thereby realizing the cutting of the sealing film. At the same time, the cutting knife 861 on the heat sealing plate 86 contacts and squeezes the sealing film to cut the sealing film, thereby realizing the cutting of the sealing film on both sides of the width direction of the packaging box, and then cutting the sealing film on both sides of the length direction of the packaging box.

[0070] Reference Figure 7 and Figure 8 In order to accommodate packaging boxes of different sizes between the support plate 41 and the abutment plate 42, a driving assembly 60 is arranged in the mounting base 30. The driving assembly 60 is connected to the support plate 41 and the abutment plate 42 through the connecting assembly 50. The driving assembly 60 includes a rotating gear 61 and a plurality of transmission gears 62. The rotating gear 61 is horizontally placed and rotatably connected to the mounting base 30. The plurality of transmission gears 62 are rotatably connected to the mounting base 30 and meshed with the rotating gear 61.

[0071] Reference Figure 3 and Figure 7 The connecting assembly 50 corresponds to the transmission gear 62 one by one, and a baffle is horizontally fixed in the mounting seat 30, and the baffle separates the transmission gear 62 and the connecting assembly 50, wherein the air outlet 32 ​​and the air inlet 33 are both located above the baffle.

[0072] The connecting assembly 50 includes a connecting gear 51 and two connecting racks 52. The connecting gear 51 is coaxially fixed to the transmission gear 62 through a rotating shaft, a slider is integrally formed on the connecting rack 52, a positioning groove is provided on the top wall of the baffle, and the slider is inserted into the positioning groove and can move in the positioning groove. The two connecting racks 52 are parallel to each other and mesh with the connecting gear 51, one of the connecting racks 52 is fixed to the bottom wall of the fixing sleeve 412 on the same straight line, and the other connecting rack 52 is fixed to the bottom wall of the positioning sleeve 422 on the same straight line.

[0073] When the rotating gear 61 rotates, it drives several transmission gears 62 to rotate at the same time, driving the connecting gear 51 to rotate synchronously, thereby driving the connecting rack 52 to move. Since the two connecting racks 52 are located on both sides of the connecting gear 51, the two connecting racks 52 move in opposite directions, that is, they move toward or away from the connecting gear 51 at the same time, thereby driving the support plate 41 and the abutment plate 42 to move toward or away from each other at the same time, so as to change the width of the placement box 40 and meet the adaptive support for packaging boxes of different widths.

[0074] The rotating gear 61 drives the transmission gears 62 to rotate at the same number of times, that is, the connecting gears 51 rotate at the same number of times, so that the connecting racks 52 move at the same distance, and then the support plates 41 and the abutment plates 42 move at the same time and the moving distances are equal, thereby realizing the simultaneous adjustment of the widths of the placement boxes 40 to meet the needs of packaging boxes with different placement widths.

[0075] Reference Figure 2 and Figure 8 When the distance between the support plate 41 and the abutment plate 42 is adjusted, in order to prevent the support plate 41 and the abutment plate 42 from moving, a fixing assembly 70 is provided on the mounting seat 30, and the fixing assembly 70 includes a fixing rack 71, a limiting rack 72 and a limiting spring 73. The fixing rack 71 is inserted in the mounting seat 30 and meshes with the rotating rack. The limiting rack 72 is parallel to the fixing rack 71, and the limiting rack 72 is integrally formed with a guide block. A guide wipe is provided on the mounting seat 30, and the guide block is inserted in the guide groove and can move along the guide groove toward or away from the fixing rack 71. One end of the limiting spring 73 is fixed to the mounting seat 30, and the other end is fixed to a side of the limiting rack 72 away from the fixing rack 71. One end of the fixing rack 71 and the limiting rack 72 both extend out of the mounting seat 30, and a clearance groove is provided on the working frame 20 for the insertion and movement of the fixed rack 71 and the limiting rack 72 extending out of the mounting seat 30.

[0076] When packaging boxes of different widths need to be placed in the placing box 40, the limiting rack 72 is manually squeezed against the limiting spring 73 to separate the limiting rack 72 from the fixed rack 71, and then the fixed rack 71 is moved to move along the length direction of the workbench 10, thereby driving the rotating gear 61 to rotate, and then the connecting rack 52 drives the support plate 41 and the abutment plate 42 to move towards or away from each other at the same time, thereby changing the distance between the support plate 41 and the abutment plate 42.

[0077] When the width of the placement box 40 can adapt to support a packaging box of corresponding width, the limiting rack 72 moves towards the fixed rack 71 under the action of the limiting spring 73 until it engages with the fixed rack 71, and the teeth on the limiting rack 72 abut against the teeth on the fixed rack 71, thereby limiting the movement of the fixed rack 71 along the length direction of the workbench 10, that is, the rotating rack does not rotate, thereby fixing the connecting rack 52 in the mounting seat 30, and finally realizing the fixation of the support plate 41 and the abutment plate 42 in the mounting seat 30, thereby fixing the width of the placement box 40 and increasing the stability of the supported packaging box.

[0078] Reference Figure 6 and Figure 7 In order to increase the stability of the movement of the support plate 41 and the abutment plate 42, a plurality of moving rods 110 are arranged in the mounting seat 30. The moving rods 110 correspond to the ends of the support plate 41 one by one, and the moving plate is perpendicular to the support plate 41, that is, the moving directions of the moving rods 110 and the support plate 41 are parallel, and are located at the wide side position of the placement box 40. A moving groove 4121 is provided on the bottom wall of the fixed sleeve 412, and the moving groove 4121 is located at the end of the fixed sleeve 412. Similarly, a sliding groove 4221 is provided on the bottom wall of the positioning sleeve 422, and the sliding groove 4221 is also located at the end of the positioning sleeve 422. The moving rod 110 is adapted to be inserted in the moving groove 4121 and the sliding groove 4221. When the support plate 41 and the abutment plate 42 move, the inner walls of the moving groove 4121 and the sliding groove 4221 abut and slide on the side walls of the moving rod 110, playing a role of limiting and guiding, so that the support plate 41 and the abutment plate 42 always remain parallel to each other and move along the length direction of the moving rod 110 without deviation.

[0079] Reference Figure 6 When the support plate 41 and the abutment plate 42 abut against the two sides of the support box in the length direction, in order to support the two sides of the width direction of the package box and increase the stability of the package box placed in the mounting seat 30, a plurality of support rods 90 are sleeved on the moving rod 110, and matching holes are opened through the support rod 90. The moving rod 110 is provided with matching holes, and the support rod 90 can move on the moving rod 110. The support rod 90 is located in the mounting groove 31, and a limiting block 91 is integrally formed on the inner wall of the matching hole on the support rod 90. The moving rod 110 is provided with a limiting groove 111, and the limiting groove 111 is arranged along the length direction of the moving rod 110. The limiting block 91 is inserted in the limiting groove 111 and can move in the limiting groove 111.

[0080] When the support plate 41 and the abutment plate 42 are adjusting the distance, the support rod 90 is pushed to move, so that the limit block 91 moves in the limit groove 111, so that the distance between adjacent support rods 90 changes to adapt to the distance between the support plate 41 and the abutment plate 42. If the distance between the support plate 41 and the abutment plate 42 becomes larger, the support rod 90 can be manually moved to increase the spacing between adjacent support rods 90, so as to achieve the reset of the support rod 90. When the packaging box is adapted and inserted between the support plate 41 and the abutment plate 42, the support plate 41 and the abutment plate 42 abut against both sides of the support packaging box in the length direction, and at this time, the outer edges of both sides of the packaging box in the width direction abut against the support rod 90. When the film laminating mechanism 80 performs film sealing packaging on the packaging box, the two sides of the packaging box in the width direction are not easily deformed by pressure, which increases the stability of the packaging box placed in the placement box 40 for packaging.

[0081] The implementation principle of a floor-standing modified atmosphere fresh-keeping packaging machine in the embodiment of the present application is as follows: when working, the packaging box is placed between the fixed plate 411 and the positioning plate 421, and the edges of the packaging box in the length direction are supported by the fixed plate 411 and the positioning plate 421, and then the rotating driving member 83 is started to make the feeding roller 81 and the receiving roller 82 rotate synchronously, so that the sealing film slides in the direction close to the receiving roller 82 under the heat sealing plate 86 until the complete sealing film on the feeding roller 81 moves to the bottom of the heat sealing plate 86. Then the moving driving member 84 is started to drive the heat sealing plate 86 to drive the sealing film to contact the top wall of the packaging box, and then the vacuum pump 130 and the air delivery pump 140 are used to extract the original air in the packaging box and fill it with nitrogen, and then the lifting driving member 85 is started to drive the heat sealing plate 86 to press down, and the heat sealing plate 86 heats the sealing film and the edge of the packaging box to complete the heat sealing.

[0082] At the same time, the heat sealing plate 86 moves downward to squeeze the fixed plate 411 and the positioning plate 421, so that the fixed plate 411 squeezes the fixed spring 413 downward, and the positioning plate 421 squeezes the positioning spring 423 downward, thereby driving the packaging box and the sealing film on the upper surface of the packaging box to move downward together, while the height of the cutting knife 120 remains unchanged, thereby achieving the cutting of the sealing film, and the cutting knife 861 on the heat sealing plate 86 also contacts and squeezes and cuts the sealing film during the process of the heat sealing plate 86 being pressed downward, thereby achieving the cutting of the sealing film on both sides of the width direction of the packaging box, and then cutting the sealing film on both sides of the length direction of the packaging box.

[0083] Finally, the rotating driving member 83 is started to make the feeding roller 81 and the receiving roller 82 rotate synchronously, so that the sealing film slides in the direction of the receiving roller 82 under the heat sealing plate 86 until the complete sealing film on the feeding roller 81 moves to the bottom of the heat sealing plate 86, thereby realizing the automatic feeding of the sealing film for packaging the packaging box.

[0084] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A floor-standing modified atmosphere fresh-keeping packaging machine, used for sealing covers and films on packaging boxes, characterized in that: include: Workbench (10); A working frame (20) is fixedly mounted on the working table (10), and a laminating mechanism (80) is disposed on the working frame (20); A mounting seat (30) is disposed on the workbench (10) and is located below the laminating mechanism (80); the mounting seat (30) is hollow inside and has a plurality of mounting grooves (31) connected to the top; A plurality of placement boxes (40) for placing packaging boxes, the placement boxes (40) corresponding to the installation slots (31) one by one, each of the placement boxes (40) comprising a support plate (41) and an abutment plate (42) of equal length to the packaging box, the support plate (41) and the abutment plate (42) being located in the installation slot (31), each of the support plates (41) and each of the abutment plates (42) being parallel to each other, and a connection assembly (50) being connected between the support plate (41) and the abutment plate (42); A driving assembly (60), wherein the driving assembly (60) is disposed in the mounting seat (30) and is located below the placement box (40), the driving assembly (60) is connected to the mounting seat (30), and the driving assembly (60) drives the connecting assembly (50) to drive the supporting plate (41) and the abutting plate (42) to move closer to or farther from each other; The driving assembly (60) comprises: A rotating gear (61) is rotatably connected in the mounting seat (30); A plurality of transmission gears (62) are rotatably connected in the mounting seat (30), the transmission gears (62) are meshed with the rotating gears (61), and the connecting assembly (50) is connected to the transmission gears (62); The mounting seat (30) is provided with a fixing assembly (70), and the fixing assembly (70) comprises: A fixed rack (71), the fixed rack (71) is slidably connected to the mounting seat (30) and meshes with the rotating gear (61); A limiting rack (72), wherein the limiting rack (72) is slidably connected to the mounting seat (30), and the limiting rack (72) can be meshed with the fixed rack (71); A limit spring (73), one end of the limit spring (73) is fixed to the mounting seat (30), and the other end is fixed to the limit rack (72), and is used to push the limit rack (72) in a direction close to the fixed rack (71); Each of the transmission gears (62) is connected to a connecting assembly (50), and each of the connecting assemblies (50) comprises: A connecting gear (51), wherein the connecting gear (51) is coaxially fixed with the transmission gear (62); Two connecting racks (52), the two connecting racks (52) are parallel to each other and mesh with the connecting gear (51), one of the connecting racks (52) is connected to each supporting plate (41) along the length direction of the connecting rack (52), and the other connecting rack (52) is connected to each abutting plate (42) along the length direction of the connecting rack (52).

2. The floor-standing modified atmosphere fresh-keeping packaging machine according to claim 1, characterized in that: A plurality of moving rods (110) are arranged in the mounting seat (30), and the moving rods (110) extend along the moving direction of the support plate (41). The ends of the moving rods (110) are fixed to the mounting seat (30). A moving groove (4121) is provided at the bottom of the support plate (41), and the moving groove (4121) is located at the end of the support plate (41). A sliding groove (4221) is provided at the bottom of the abutment plate (42), and the sliding groove (4221) is located at the end of the abutment plate (42). The moving rod (110) is penetrated by the moving groove (4121) and the sliding groove (4221), and the support plate (41) and the abutment plate (42) can move on the moving rod (110).

3. The floor-standing modified atmosphere fresh-keeping packaging machine according to claim 2, characterized in that: A plurality of support rods (90) are sleeved on the moving rod (110), and matching holes are opened on the support rods (90). The moving rod (110) is penetrated by the matching holes, and the top wall of the support rod (90) is flush with the top wall of the support plate (41). The support rod (90) can move on the moving rod (110), and the support rod (90) is located in the installation groove (31) and between the support plate (41) and the abutment plate (42).

4. The floor-standing modified atmosphere fresh-keeping packaging machine according to claim 3, characterized in that: A limiting block (91) is fixed on the inner wall of the matching hole on the support rod (90), a limiting groove (111) is provided on the side wall of the moving rod (110), and the limiting block (91) is inserted into the limiting groove (111) and can move in the limiting groove (111).

5. The floor-standing modified atmosphere fresh-keeping packaging machine according to claim 1, characterized in that: The work frame (20) is provided with a vacuum pump (130) and an air delivery pump (140); a gas outlet hole (32) and a gas inlet hole (33) are provided on the side wall of the mounting seat (30); the input end of the vacuum pump (130) is aligned with the gas outlet hole (32), and the output end of the gas delivery pump (140) is aligned with the gas inlet hole (33); The laminating mechanism (80) comprises: A feeding roller (81) is located on one side of the working frame (20); A receiving roller (82) is located at the other side of the working frame (20), a connecting hole is formed through the side wall of the working frame (20), and the sealing film on the feeding roller (81) passes through the connecting hole and is connected to the receiving roller (82); A rotating driving member (83) is arranged on the working frame (20) and is used to drive the feeding roller (81) and the receiving roller (82) to rotate; A lifting drive member (85) is connected to the work frame (20) via a moving drive member (84), wherein the moving drive member (84) is used to drive the lifting drive member (85) to move up and down; The heat sealing plate (86) is connected to the output end of the lifting drive member (85), and the lifting drive member (85) is used to drive the heat sealing plate (86) to move up and down. The heat sealing plate (86) is located above the sealing film, and the mounting seat (30) is located below the sealing film. A cutting knife (861) is provided on the bottom wall of the heat sealing plate (86), and the cutting knife (861) is aligned with the moving rod (110).

6. The floor-standing modified atmosphere fresh-keeping packaging machine according to claim 1, characterized in that: The support plate (41) comprises a fixing plate (411), a fixing sleeve (412) and a fixing spring (413); the fixing sleeve (412) is fixed on the connecting rack (52); the opening of the fixing sleeve (412) faces upward; the fixing plate (411) is inserted into the fixing sleeve (412); the fixing spring (413) is arranged in the fixing sleeve (412) to push the fixing plate (411) upward; The abutment plate (42) comprises a positioning plate (421), a positioning sleeve (422) and a positioning spring (423); the positioning sleeve (422) is fixed on the connecting rack (52); the opening of the positioning sleeve (422) faces upward; the positioning plate (421) is inserted into the positioning sleeve (422); the positioning spring (423) is arranged in the positioning sleeve (422) and is used to push the positioning plate (421) upward; A cutting knife (120) is fixed on both the fixing sleeve (412) and the positioning sleeve (422), and the top of the cutting knife (120) is higher than the top of the fixing sleeve (412) and the positioning sleeve (422), and lower than the top of the fixing plate (411) and the positioning plate (421).

7. The floor-standing modified atmosphere fresh-keeping packaging machine according to claim 1, characterized in that: A rodless cylinder (150) is arranged on the workbench (10), and the output end of the rodless cylinder (150) is connected to the bottom of the mounting seat (30) for driving the mounting seat (30) to move along the length direction of the workbench (10). A slide (160) is fixed on the workbench (10), and a slide groove (34) is opened on the bottom wall of the mounting seat (30) along the length direction of the workbench (10). The slide (160) is inserted into the slide groove (34), and the mounting seat (30) can move on the slide (160).

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