Vacuum sealing mechanism for automatic packaging of roasted seeds and nuts

Abstract

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

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum packaging of roasted seeds and nuts, and in particular relates to a vacuum sealing mechanism for automatic packaging of roasted seeds and nuts. Background Art

[0002] In the roasted food processing industry, the use of automated packaging equipment has become a key factor in improving production efficiency. Vacuum sealing, a core process for ensuring the shelf life and quality of roasted nuts, places high demands on the coordination and stability of the equipment. Currently, mainstream automated roasted nuts packaging lines typically utilize a multi-station, step-by-step operation model, requiring the following steps: bagging, bag opening, filling, shaping and pressing, vacuuming, and heat sealing.

[0003] The packaging sealing mechanism of the existing technology has the following problems: 1) Each process corresponds to an independent workstation. Although basic automation is achieved, the dispersed layout of multiple workstations in the continuous production process leads to a lengthy production process. The coordination of the actions of each workstation requires precise control, which not only increases the difficulty of equipment debugging, but also reduces the overall packaging efficiency due to the waiting time between processes.

[0004] 2) Shape adjustment: The pressing process only squeezes the material through the front and rear extrusion plates to flatten the originally bulging material as much as possible. However, due to the lack of constraints in the upper and lower directions, the roasted seeds and nuts particles (such as peanuts or melon seeds) are easily loosened due to uneven extrusion force, forming a large thickness gap between the upper and lower materials, affecting the regularity of the packaging shape and reducing the packaging quality.

[0005] 3) During the vacuuming stage, if the instantaneous negative pressure at the exhaust pipe port is too large, lightweight roasted seeds and nuts particles may be adsorbed to the pipe port, causing local blockage, which not only reduces the uniformity of the vacuum degree, but also may affect the vacuuming efficiency.

[0006] Therefore, there is an urgent need for a vacuum sealing mechanism for automatic packaging of roasted food to solve the above problems. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides a vacuum sealing mechanism for automatic packaging of roasted food, which is used to solve the problems mentioned in the above background technology.

[0008] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: The present invention provides a vacuum sealing mechanism for automatic packaging of roasted food, comprising a base, a connecting disk rotatably arranged above the base, two groups of fixed components evenly distributed along its circumferential direction are arranged on the connecting disk, a U-shaped fixing frame is arranged on the fixing component, a constricting mechanism is arranged on the U-shaped fixing frame, a heat sealing component is arranged on the constricting mechanism, a shaping mechanism is arranged on the base, and a vacuum tube that can move up and down is arranged above the shaping mechanism. The constricting mechanism includes two slides slidably arranged on the U-shaped fixing frame, a driving component 1 is commonly arranged between the two corresponding slides, a hollow sealing plate is slidably arranged on the opposite sides of the two slides, and suction ports are opened on the opposite sides of the two sealing plates, a constricting plate is arranged below the slide, and a connecting component is arranged between the constricting plate and the corresponding slide. The shaping mechanism includes a driving component 2 connected to the base, two shaping plates are arranged on the driving component 2, and a bottom support component is commonly arranged between the two shaping plates. The sealing plate with an adsorption port adsorbs the film on the surface of the packaging bag and is driven by a driving component to control the opening and closing of the bag mouth. The corresponding two drawstring plates can control and adjust the degree of closing of the front and rear side films of the packaging bag. The two drawstring plates can also cooperate with the shaping plate and the bottom support plate to control the dispersion shape of the material in the packaging bag and finally cooperate with the heat sealing component to perform the sealing operation.

[0009] According to a favorable embodiment, a column is fixedly provided on the base, and the connecting plate is coaxially rotatably sleeved on the column through a rotating tube. Motor 1 is fixedly provided on the base, and the output shaft of motor 1 is connected to the lower end of the rotating tube through a gear set.

[0010] According to a preferred embodiment, the fixing assembly includes a Y-shaped fixing frame fixedly connected to the connecting plate, and both support plates of the Y-shaped fixing frame are provided with fixing slots, a pass electromagnet is fixedly arranged in the fixing slot, and a slide groove 1 is provided on the side of the fixing slot opposite to the pass electromagnet, a return spring 1 is fixedly arranged in the slide groove 1, one end of the return spring is fixedly connected to an iron fixing block, and one side of the fixing block is slidably connected to the slide groove 1.

[0011] According to a preferred embodiment, the first drive assembly includes a first cylinder fixedly mounted on the upper side of the connecting plate, the telescopic end of the first cylinder being fixedly connected to the corresponding slide. Gears are rotatably mounted on both support plates of the U-shaped mounting frame, and a toothed plate is fixedly mounted on the side of the slide proximate to the corresponding gear, the toothed plate meshing with the corresponding gear. A first guide rod is fixedly mounted via an ear on the side of both support plates of the U-shaped mounting frame proximate to each other, and both ends of the slide are slidably connected to the corresponding first guide rod.

[0012] According to an advantageous embodiment, two corresponding slides are each provided with a second slide groove on opposite sides thereof, wherein a second return spring is fixedly disposed within the second slide groove, and one end of the second return spring is fixedly connected to the corresponding sealing plate. The heat sealing assembly comprises a heat sealing plate and two L-shaped connecting plates, wherein the two L-shaped connecting plates are fixedly disposed on the upper sides of the corresponding slides and are both fixedly connected to the heat sealing plate.

[0013] According to a favorable embodiment, the connecting assembly includes a screw rod 1 threadedly connected to the skateboard, a lower end of the screw rod is rotatably connected to an adjustment seat, two guide rods 2 are fixedly provided on the upper side of the adjustment seat, the guide rods 2 are slidably plugged into the corresponding skateboard above, a screw rod 2 is threadedly connected to the adjustment seat, one end of the screw rod 2 is rotatably connected to the restraint plate, and two guide rods 3 are fixedly provided on the restraint plate, the guide rods 3 are slidably plugged into the corresponding adjustment seat.

[0014] According to a favorable embodiment, the driving component 2 includes a mounting plate fixedly connected to the base, a guide rail is fixedly arranged on the mounting plate, a slide groove 3 is opened on the upper side of the guide rail, a screw rod 3 is rotatably arranged in the slide groove 3, two threaded segments with opposite thread directions are provided on the screw rod 3, and each threaded segment is threadedly connected to a slide seat, the slide seat is slidably connected to the guide rail, and the slide seat is fixedly connected to the corresponding shaping plate through a connecting column, a motor 2 is fixedly arranged on one side of the guide rail, and the output shaft of the motor 2 is fixedly connected to one end of the screw rod 3.

[0015] According to a favorable embodiment, the base support assembly includes two groups of rotating frames arranged between the two shaping plates and distributed on the left and right, a lifting plate is commonly provided between the two rotating frames, and a height-adjustable base support plate is provided on the lifting plate. The rotating frame is composed of two rotating plates rotatably connected to each other, one end of the rotating plate is rotatably connected to the corresponding shaping plate, and the other end of the rotating plate is rotatably connected to a slider, four sliding grooves four are opened on the lower side of the lifting plate, and a guide rod four is fixedly provided in the sliding groove four, and the slider is slidably provided in the corresponding sliding groove four and slidably plugged with the corresponding guide rod four.

[0016] According to a favorable embodiment, the middle thread of the lifting plate is provided with a screw rod four, the upper end of the screw rod four is rotatably connected to the lower side of the bottom support plate, and two left-right symmetrical guide rods five are fixedly provided on the lower side of the bottom support plate, and the lower end of the guide rod five is slidably plugged into the lifting plate.

[0017] According to a preferred embodiment, a second air cylinder is fixedly mounted on the top of the column via a bracket, and the telescopic end of the second air cylinder is fixedly connected to the vacuum tube. A groove adapted for the vacuum tube is formed in the middle of the opposing sides of the two sealing plates. The vacuum tube and the interior of the sealing plates are connected to the external negative pressure device via an air pipe.

[0018] Compared with the prior art, the vacuum sealing mechanism for automatic packaging of roasted food provided by the embodiment of the present invention has the following beneficial effects: 1. In the present invention, through the fixing frame and the restraining mechanism, bagging, bag opening and filling can be integrated into the same workstation, and at the same time, shape adjustment, pressing, vacuuming and heat sealing are integrated into another process, which saves the waiting time for material transfer between traditional multiple workstations, reduces the difficulty of complex signal coordination control and equipment debugging between traditional multiple workstations, and improves the stability of the equipment in high-speed production and packaging efficiency.

[0019] 2. In the present invention, the shaping plates on the front and rear sides squeeze the material area inside the packaging bag, and at the same time, the bottom support plate is driven upward by the rotating frame to support the bottom of the packaging bag, and the tie plate at the upper position of the packaging bag limits excessive upward movement of the material, forming a multi-directional three-dimensional shaping of the packaging bag as a whole, including bottom support, middle extrusion and upper limitation, which solves the problem of looseness and large thickness difference of roasted seeds and nuts particles due to uneven extrusion force, and improves the packaging quality of the packaging bag after sealing.

[0020] 3. In the present invention, the front and rear tie plates of the packaging bag form a gap below the vacuum tube that only allows air to pass through and blocks the material. The groove of the sealing plate is used to seal the inside of the packaging bag, so that the negative pressure only acts on the air in the gap between the materials during vacuuming. The air can enter the vacuum tube through the gap, while the roasted seeds and nuts particles are blocked because their size is larger than the gap, which greatly reduces the problem of material adsorption blocking the tube mouth and ensures the uniformity of vacuum and the air extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the overall three-dimensional structure diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the split explosion three-dimensional structure of the present invention.

[0023] Figure 3 It is a three-dimensional structural diagram of the cinch mechanism in the present invention.

[0024] Figure 4 It is a schematic structural diagram of the relative positions of the slide plate, the constriction plate and the connecting assembly in the present invention.

[0025] Figure 5 It is a side plan view of the cinch mechanism and the fixing assembly in the present invention.

[0026] Figure 6 It is a three-dimensional structural diagram of the shaping mechanism in the present invention.

[0027] Figure 7 It is a three-dimensional structural diagram of the bottom support assembly in the present invention.

[0028] Figure 8It is a schematic planar side view of the packaging bag when it is initially fixed by the fixing component.

[0029] Figure 9 It is a schematic planar side view of the bag opening after being pulled open by two sealing plates.

[0030] Figure 10 Schematic side view of the bag during vacuuming and sealing after filling.

[0031] Figure 11 This is a schematic diagram of the position structure of the sealing plate and the heat sealing plate relative to the slide when the packaging bag is vacuumed.

[0032] Figure 12 This is a schematic diagram of the position structure of the heat sealing plate relative to the slide when sealing the packaging bag.

[0033] Reference numerals in the figure: 1, base; 2, connecting plate; 3, fixing assembly; 31, Y-shaped fixing frame; 311, fixing notch; 32, electromagnet; 33, fixing block; 4, U-shaped fixing frame; 5, clamping mechanism; 51, slide plate; 52, driving assembly 1; 521, cylinder 1; 522, gear; 523, tooth plate; 53, sealing plate; 531, suction port; 532, groove; 54, clamping plate; 55, connecting assembly; 551, screw 1; 552. Adjusting seat; 553. Screw 2; 6. Heat sealing assembly; 61. Heat sealing plate; 62. L-shaped connecting plate; 7. Shaping mechanism; 71. Drive assembly 2; 711. Mounting plate; 712. Guide rail; 713. Screw 3; 714. Slide; 72. Shaping plate; 73. Bottom support assembly; 731. Rotating frame; 732. Lifting plate; 733. Bottom support plate; 734. Screw 4; 8. Vacuum tube; 9. Cylinder 2; 10. Packaging bag. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 -Attached Figure 12 This application is described in further detail.

[0035] Please refer to Figure 1-Figure 3 A vacuum sealing mechanism for automatic packaging of roasted food includes a base 1, a column fixedly mounted on the base 1, a connecting disc 2 coaxially mounted on the base 1 via a rotating tube, a motor 1 fixedly mounted on the base 1, and a gear train connecting the output shaft of the motor 1 to the lower end of the rotating tube. Connecting disc 2 is provided with two sets of fixed components 3 evenly distributed along its circumference, a U-shaped fixing frame 4 is provided on the fixing component 3, a constricting mechanism 5 is provided on the U-shaped fixing frame 4, and a heat sealing component 6 is provided on the constricting mechanism 5. A shaping mechanism 7 is provided on the base 1, and a cylinder 2 9 is fixedly mounted on the top of the column via a bracket, and a vacuum tube 8 is fixedly connected to the telescopic end of the cylinder 2 9. The vacuum tube 8 is connected to an external negative pressure device for vacuuming.

[0036] During specific operation, the fixing component 3 cooperates with the external bag feeding mechanism to press the packaging bag 10 (such as Figure 8 As shown in the figure, the edges of both sides are fixed, and then the bag opening of the packaging bag 10 is automatically opened by the closing mechanism 5 and filled through the corresponding external filling mechanism. After the filling is completed, the motor 1 cooperates with the gear 522 group to control the rotation of the connecting disk 2 to transfer the filled packaging bag 10 to the position of the heat sealing component 6. Then, the vacuum tube 8 is inserted into the packaging bag 10 to a certain depth through the cylinder 2 9, and the packaging bag 10 is limited and sealed by the shaping mechanism 7 and the closing mechanism 5. The packaging bag 10 is vacuumed. After the vacuum tube 8 is drawn out from the inside of the packaging bag 10, the bag opening of the packaging bag 10 is quickly sealed by the heat sealing component 6.

[0037] See Figure 2 and Figure 5 The fixing assembly 3 includes a Y-shaped fixing frame 31 fixedly connected to the connecting plate 2. The two support plates of the Y-shaped fixing frame 31 are provided with fixing slots 311. The fixing slots 311 are fixedly provided with a through electromagnet 32. A slide slot 1 is provided on the side of the fixing slot 311 opposite to the through electromagnet 32. A return spring 1 (not shown in the figure) is fixedly provided in the slide slot 1. One end of the return spring is fixedly connected to an iron fixing block 33. One side of the fixing block 33 is slidably connected to the slide slot 1. When the external bag feeding mechanism inserts the flat packaging bag 10 from top to bottom between the two fixing slots 311 (as shown in the figure), the outer bag feeding mechanism inserts the flat packaging bag 10 from top to bottom between the two fixing slots 311 (as shown in the figure). Figure 8 As shown, the electromagnets 32 in the fixed slots 311 are then energized to attract the fixed blocks 33 in the fixed slots 311 and move them toward the corresponding electromagnets 32, thereby securing and clamping the edges of the packaging bag 10 inserted in the fixed slots 311 between the corresponding electromagnets 32 and the fixed blocks 33. It should be noted that the bag feeding mechanism can typically be a loading robot, which is well known in the art and is therefore not described in detail in this solution.

[0038] See Figure 2-Figure 4 The constriction mechanism 5 includes two slides 51 slidably mounted on a U-shaped fixing frame 4. A driving assembly 52 is provided between the two corresponding slides 51. A hollow sealing plate 53 is slidably mounted on opposite sides of the two slides 51. Adsorption ports 531 are provided on the opposite sides of the two corresponding sealing plates 53. A constriction plate 54 is provided below the slides 51. A connecting assembly 55 is provided between the constriction plate 54 and the corresponding slides 51. A groove 532 is provided in the middle of the opposite sides of the two corresponding sealing plates 53, which is compatible with the vacuum tube 8. The interior of the sealing plate 53 is connected to the external negative pressure device via an air pipe. The specific structure of the external negative pressure device is well known in the art and will not be described in detail in this solution.

[0039] During operation, the two slides 51 are controlled by the driving component 152 to move closer to each other, so that the two sealing plates 53 move closer to each other and finally adhere to the front and rear side surfaces of the packaging bag 10. At this time, the external negative pressure device is used to draw air to generate negative pressure at the adsorption port 531 on the sealing plate 53, so that the sealing plate 53 can adsorb the film of the packaging bag 10, so that after the corresponding two sealing plates 53 are attached to the surface of the packaging bag 10, the two sealing plates 53 are driven by the driving component 152 to move away from each other synchronously, and the bag opening of the packaging bag 10 is opened (such as Figure 9 As shown), directly fill the material.

[0040] After the filling is completed, the filled packaging bag 10 is transferred to the sealing component position for vacuuming. The vacuum tube 8 can be inserted into the opened packaging bag 10 to a certain depth, and then the two corresponding front and rear sealing plates 53 are brought close to each other and collide with each other. The two grooves 532 on the opposite sides of the two sealing plates 53 can form a sealing area. The vacuum tube 8 is embedded in the sealing area, sealing the bag opening of the packaging bag 10 while sealing the vacuum tube 8 inserted into the interior of the packaging bag 10. At the same time, in the process of the sliding plate 51 driving the sealing plate 53 to move, the tie plate 54 moves synchronously with the sliding plate 51 through the corresponding connecting component 55. When the corresponding two sealing plates 53 seal the bag opening of the packaging bag 10, the two corresponding tie plates 54 will also approach each other at the same time, pushing the front and rear films of the packaging bag 10 below the port of the vacuum tube 8 close to each other. When the two sealing plates 53 approach each other and collide with each other, the two tie plates 54 control the front and rear films of the packaging bag 10 below the port of the vacuum tube 8 to gradually approach and eventually form a gap (such as Figure 10 As shown). This allows the air in the material area inside the packaging bag 10 to enter the vacuum tube 8 through the gap for vacuuming, while the material cannot be sucked into the interior through the gap by the negative suction pressure generated by the vacuum tube 8, causing adverse effects.

[0041] See Figure 3 and Figure 4The driving assembly 1 52 includes a cylinder 1 521 fixedly arranged on the upper side of the connecting disk 2. The telescopic end of the cylinder 1 521 is fixedly connected to the corresponding slide 51. Gears 522 are rotatably provided on both plates of the U-shaped fixing frame 4. A toothed plate 523 is fixedly provided on the side of the slide 51 close to the corresponding gear 522. The toothed plate 523 and the corresponding gear 522 are meshed with each other. A guide rod 1 is fixedly provided on the side of the two plates of the U-shaped fixing frame 4 close to each other through an ear seat. The two ends of the slide 51 are slidably connected to the corresponding guide rod 1. The slide 51 is pushed by the cylinder 1 521 to move on the U-shaped fixing frame 4. The slide 51 moves through the corresponding toothed plate 523 and cooperates with the gear 522. The other slide 51 on the opposite side moves toward each other, so that the two slides 51 drive their respective sealing plates 53 to move closer to or away from each other. During the movement, the two corresponding slides 51 are guided by the guide rod 1 to slide on the U-shaped fixing frame 4.

[0042] See Figure 3 、 Figure 4 、 Figure 11 and Figure 12 The two corresponding slides 51 are each provided with a second slide groove on the opposite side. A second return spring (not shown) is fixedly installed within the second slide groove. One end of the second return spring is fixedly connected to the corresponding sealing plate 53. The heat sealing assembly 6 consists of a heat sealing plate 61 and two L-shaped connecting plates 62. The two L-shaped connecting plates 62 are fixedly installed on the upper side of the corresponding slide 51 and are both fixedly connected to the heat sealing plate 61. Initially, the heat-sealing surface of the heat sealing plate 61 is further away from the packaging bag 10 than the corresponding sealing plate 53 below. When the two sealing plates 53 approach each other and eventually contact the front and rear sides of the film of the packaging bag 10, the sealing process before vacuuming can be carried out. When the packaging bag 10 needs to be sealed after the subsequent vacuuming is completed, the vacuum tube 8 is pulled out from the packaging bag 10. At the same time, while the two corresponding sealing plates 53 remain in contact with each other, the corresponding two slides 51 continue to actively approach each other, and the slides 51 and the corresponding sealing plates 53 slide relative to each other, which will cause the corresponding two sealing plates 53 to remain stationary while gradually shrinking into the second slide groove in their respective slides 51. Finally, after the vacuum tube 8 is pulled out, the two slides 51 actively approach a certain distance, and the heat-sealing plates 61 on the two slides 51 will eventually contact the surface of the packaging bag 10, and the packaging bag 10 will be heat-sealed and sealed.

[0043] It should be noted that the heat sealing technology of the heat sealing plate 61 is the core component for achieving material sealing. It uses heat transfer and pressure to melt and bond thermoplastic materials (such as plastic films, composite films, etc.), and forms a sealed structure after cooling. This is a well-known technology, and the specific structure is not detailed in this solution.

[0044] See Figure 3 and Figure 4The connecting assembly 55 includes a screw rod 551 threadedly connected to the slide 51. The lower end of the screw rod 551 is rotatably connected to an adjustment seat 552. Two guide rods 2 are fixedly provided on the upper side of the adjustment seat 552. The guide rods 2 are slidably plugged into the corresponding slide 51 above. The adjustment seat 552 is threadedly connected to a screw rod 553. One end of the screw rod 553 is rotatably connected to the constriction plate 54. The constriction plate 54 is also fixedly provided with two guide rods 3. The guide rods 3 are slidably plugged into the corresponding adjustment seat 552. The staff can control the vertical movement of the adjustment seat 552 by rotating the screw rod 551 to adjust the height of the constriction plate 54 relative to the shaping mechanism 7. At the same time, the initial spacing between the two corresponding constriction plates 54 can be adjusted by rotating the screw rod 553. When the two corresponding sealing plates 53 above collide, the two corresponding constriction plates 54 below can form an air circulation gap of appropriate width as needed.

[0045] See Figure 2 、 Figure 6 and Figure 7 The shaping mechanism 7 includes a second drive assembly 71, which includes a mounting plate 711 fixedly connected to the base 1. A guide rail 712 is fixedly provided on the mounting plate 711. A slide groove 3 is provided on the upper side of the guide rail 712. A screw rod 3 is rotatably provided in the slide groove 3. The screw rod 3 713 is provided with two threaded segments with opposite thread directions, and each threaded segment is threadedly connected to a slide 714. The slide 714 is slidably connected to the guide rail 712. The shaping plate 72 is fixedly connected to the slide 714 via a connecting column. A second motor is fixedly provided on one side of the guide rail 712. The output shaft of the second motor is fixedly connected to one end of the screw rod 3 713. A bottom support assembly 73 is provided between the two shaping plates 72. The second motor drives the screw rod 3 713 to rotate and control the movement of the shaping plates 72 on the two slides 714. The two shaping plates 72 move closer to each other to squeeze and shape the front and back sides of the packaging bag 10 sandwiched between them and filled with material. And when the two shaping plates 72 approach each other, the bottom support assembly 73 can synchronously lift the bottom of the packaging bag 10. At the same time, the two corresponding tie plates 54 above can limit the material inside the packaging bag 10 and on the upper layer when the two shaping plates 72 squeeze the material in the packaging bag 10, and shape the material inside the packaging bag 10.

[0046] See Figure 6 and Figure 7The bottom support assembly 73 includes two rotating frames 731 disposed between the two shaping plates 72 and distributed left and right. A lifting plate 732 is disposed between the two rotating frames 731. A screw rod 734 is threadedly disposed in the middle of the lifting plate 732. The upper end of the screw rod 734 is rotatably connected to the bottom support plate 733. Two symmetrical guide rods 5 are fixedly disposed on the lower side of the bottom support plate 733. The lower ends of the guide rods 5 are slidably engaged with the lifting plate 732. The rotating frame 731 is composed of two rotating plates that are rotatably connected to each other. One end of the rotating plate is rotatably connected to the corresponding shaping plate 72, and the other end of the rotating plate is rotatably connected to a slider. Four slide slots 4 are defined on the lower side of the lifting plate 732. Guide rods 4 (not shown) are fixedly disposed in the slide slots 4. The sliders are slidably disposed in the corresponding slide slots 4 and slidably engaged with the corresponding guide rods 4. The operator can control the rotation of screw rod 734 to raise and lower the bottom support plate 733, adjusting its initial height to facilitate adjustment based on the actual bottom support needs of the packaging bag 10 during shaping. When the two corresponding shaping plates 72 approach each other, the two rotating plates in the rotating frame 731 rotate, pushing the upper lifting plate 732 to move the bottom support plate 733 upward to contact the bottom of the packaging bag 10, thereby supporting the bottom of the packaging bag 10.

[0047] During specific operation, during the vacuuming process, the two shaping plates 72 approach each other and squeeze the surface of the material-containing part of the packaging bag 10 back and forth. At the same time, the bottom support plate 733 will move upward under the drive of the rotating frame 731 to support the bottom of the packaging bag 10, and the top is also limited by the front and rear two constriction plates 54 to limit the excessive upward movement of the material, which can better shape the material shape of the packaging bag 10.

[0048] The workflow of the entire automatic packaging and sealing mechanism is as follows: bag loading, bag opening, and filling: the unopened packaging bag 10 is placed on the Y-shaped fixing frame 31 by an external loading robot and fixed by the corresponding fixing component 3, such as Figure 8 Then, the driving component 1 52 controls the two corresponding sealing plates 53 to move closer to each other to absorb the packaging bag 10, and then the two sealing plates 53 move away from each other to open the packaging bag 10 for filling. Figure 9 shown.

[0049] The packaging bag 10 is shaped, vacuumed and sealed: the connecting plate 2 rotates to control the filling packaging bag 10 to move between the two shaping plates 72, and then the upper vacuum tube 8 is inserted into the packaging bag 10 to a certain depth (the end of the vacuum tube 8 is between the corresponding sealing plate 53 and the tie plate 54). While the vacuum tube 8 is vacuuming, the two shaping plates 72 move closer to each other to squeeze and vacuum the material in the packaging bag 10. The squeezing is conducive to the discharge of air between the materials and adjusts the shape of the packaging bag 10 after packaging. Figure 10After the vacuuming is completed, the vacuum tube 8 is pulled out of the packaging bag 10, and the two heat sealing plates 61 are close to each other and abut against each other to perform heat sealing at the sealing position of the packaging bag 10. Then the packaging bag is transferred to the designated location for unloading.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vacuum sealing mechanism for automatic packaging of roasted food, comprising a base, a connecting plate rotatably disposed above the base, characterized in that: The connecting plate is provided with two groups of fixing components evenly distributed along its circumferential direction, the fixing components are provided with a U-shaped fixing frame, the U-shaped fixing frame is provided with a constricting mechanism, the constricting mechanism is provided with a heat sealing component, the base is provided with a shaping mechanism, and a vacuum tube that can move up and down is provided above the shaping mechanism; The constriction mechanism includes two slides slidably arranged on a U-shaped fixing frame, a driving assembly 1 is commonly provided between the two corresponding slides, hollow sealing plates are slidably provided on opposite sides of the two slides, and suction ports are opened on opposite sides of the two sealing plates. A constriction plate is provided below the slide, and a connecting assembly is provided between the constriction plate and the corresponding slide; The shaping mechanism includes a second driving assembly connected to the base, two shaping plates are provided on the second driving assembly, and a bottom support assembly is provided between the two shaping plates; The sealing plate with an adsorption port adsorbs the film on the surface of the packaging bag and is driven by a driving component to control the opening and closing of the bag mouth. The corresponding two drawstring plates can control and adjust the degree of closing of the front and rear side films of the packaging bag. The two drawstring plates can cooperate with the shaping plate and the bottom support plate to control the dispersion shape of the material in the packaging bag and finally cooperate with the heat sealing component to perform the sealing operation.

2. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: A column is fixedly provided on the base, and the connecting plate is coaxially rotatably sleeved on the column through a rotating tube. A motor 1 is fixedly provided on the base, and the output shaft of the motor 1 is connected to the lower end of the rotating tube through a gear set.

3. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: The fixing assembly includes a Y-shaped fixing frame fixedly connected to the connecting plate, and both support plates of the Y-shaped fixing frame are provided with fixing slots, a through electromagnet is fixedly arranged in the fixing slot, and a slide groove is provided on the side of the fixing slot opposite to the through electromagnet, a return spring is fixedly arranged in the slide groove, one end of the return spring is fixedly connected to an iron fixing block, and one side of the fixing block is slidably connected to the slide groove.

4. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: The driving assembly includes a cylinder 1 fixedly arranged on the upper side of the connecting plate, the telescopic end of the cylinder 1 is fixedly connected to the corresponding slide, the two plates of the U-shaped fixing frame are rotatably provided with gears, and a toothed plate is fixedly provided on the side of the slide close to the corresponding gear, and the toothed plate and the corresponding gear are meshed with each other; A guide rod 1 is fixedly provided on one side of the two supporting plates of the U-shaped fixing frame that are close to each other through an ear seat, and both ends of the sliding plate are slidably connected to the corresponding guide rod 1.

5. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: A second slide groove is provided on the opposite sides of the two corresponding slide plates, a second return spring is fixedly provided in the second slide groove, and one end of the second return spring is fixedly connected to the corresponding sealing plate; The heat sealing assembly consists of a heat sealing plate and two L-shaped connecting plates. The two L-shaped connecting plates are fixedly arranged on the upper sides of the corresponding slides, and the two L-shaped connecting plates are fixedly connected to the heat sealing plate.

6. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: The connecting assembly includes a screw rod 1 threadedly connected to the skateboard, a lower end of the screw rod is rotatably connected to the adjustment seat, two guide rods 2 are fixedly provided on the upper side of the adjustment seat, the guide rods 2 are slidably plugged into the corresponding skateboard above, a screw rod 2 is threadedly connected to the adjustment seat, one end of the screw rod 2 is rotatably connected to the restraint plate, and two guide rods 3 are fixedly provided on the restraint plate, the guide rods 3 are slidably plugged into the corresponding adjustment seat.

7. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: The second driving component includes a mounting plate fixedly connected to the base, a guide rail is fixedly arranged on the mounting plate, a slide groove three is opened on the upper side of the guide rail, a screw rod three is rotatably arranged in the slide groove three, two threaded sections with opposite thread directions are provided on the screw rod three, and each threaded section is threadedly connected to a slide seat, the slide seat is slidably connected to the guide rail, and the slide seat is fixedly connected to the corresponding shaping plate through a connecting column, a motor two is fixedly arranged on one side of the guide rail, and the output shaft of the motor two is fixedly connected to one end of the screw rod three.

8. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 1, characterized in that: The bottom support assembly includes two groups of rotating frames arranged between the two shaping plates and distributed on the left and right. A lifting plate is arranged between the two rotating frames, and a height-adjustable bottom support plate is arranged on the lifting plate. The rotating frame is composed of two rotating plates connected to each other for rotation. One end of the rotating plate is rotatably connected to the corresponding shaping plate, and the other end of the rotating plate is rotatably connected to a slider. Four sliding grooves four are opened on the lower side of the lifting plate, and a guide rod four is fixedly arranged in the sliding groove four. The slider is slidably arranged in the corresponding sliding groove four and slidably plugged with the corresponding guide rod four.

9. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 8, characterized in that: The middle thread of the lifting plate is provided with a screw rod four, the upper end of the screw rod four is rotatably connected to the lower side of the bottom supporting plate, and two left-right symmetrical guide rods five are fixedly provided on the lower side of the bottom supporting plate, and the lower end of the guide rod five is slidably plugged into the lifting plate.

10. The vacuum sealing mechanism for automatic packaging of roasted food according to claim 2, characterized in that: The top of the column is fixed with a second cylinder via a bracket, and the telescopic end of the second cylinder is fixedly connected to the vacuum tube; Grooves adapted to the vacuum tube are provided in the middle of the opposite sides of the two sealing plates, and the vacuum tube and the interior of the sealing plate are connected to the external negative pressure equipment through the air pipe.

Images