Nitrogen-filling fresh-keeping packaging system and method for food processing

Abstract

The invention discloses a nitrogen-filling fresh-keeping packaging system and method for food processing, and relates to the technical field of packaging machines. The nitrogen-filling fresh-keeping packaging system for food processing comprises a flat gas pipe, a nitrogen-filling device, a nitrogen-filling device and a fresh-keeping device, the clamping plate assemblies are located on the two sides of the lower portion of the flat air pipe and used for clamping an opening of the packaging bag when the flat air pipe is inflated with nitrogen; the hot plate is located below the clamping plate assembly and is not mechanically connected with the clamping plate assembly, and the hot plate is not in contact with the packaging bag when the packaging bag is filled with nitrogen through the flat air pipe; the linkage assembly is located in an area close to the hot plate; according to the nitrogen-filling fresh-keeping packaging system and method for food processing, the hot plate is not integrated on the inner surfaces of the fixed clamping plate and the movable clamping plate and is located below the clamping plate assembly, and when the flat air pipe fills nitrogen into the packaging bag, the hot plate does not make contact with the packaging bag, so that heat of the hot plate cannot be transmitted to the packaging bag during nitrogen filling, and the hot plate does not need to be intermittently heated; a continuous heating state can be set.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machines, and in particular to a food processing nitrogen-filled fresh-keeping packaging system and method. Background Art

[0002] In food processing, in order to extend the shelf life of packaged food, nitrogen is generally filled into the packaging bag using a modified atmosphere packaging machine. This is especially true for items that are easily oxidized and susceptible to moisture, such as oils, nuts, etc. Nitrogen packaging can prevent them from becoming rancid, deteriorating, or changing color due to contact with oxygen and moisture, thereby maintaining the original color, flavor, taste, and nutritional content of the product and maintaining stable product quality.

[0003] For desktop modified atmosphere packaging machines, the main components are flat inflatable tubes and two clamps, and the hot plate is integrated on the clamps. During operation, the clamps need to be in a cooling state. Align the opening of the packaging bag with the flat tube, insert the flat tube into the packaging bag, and then use two clamps to clamp the opening of the packaging bag. At this time, vacuum is first evacuated, then nitrogen is filled, and then the flat tube is pulled out and the clamps are heated to achieve the purpose of heat sealing the packaging bag. After the heat sealing is completed, the clamps stop heating and release the packaging bag. The next heat sealing operation can be carried out after the clamps are completely cooled.

[0004] The reason for the intermittent heating is to avoid the situation where the clamps heat-seal the packaging bag during the vacuuming and nitrogen filling stages. However, the intermittent heating method reduces the overall packaging efficiency. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a food processing nitrogen filling fresh-keeping packaging system and method, which solves the problem of reduced overall packaging efficiency caused by the intermittent heating method in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a food processing nitrogen-filled fresh-keeping packaging system, comprising: a flat air tube, which can move vertically; a clamping plate assembly, which is located on both sides below the flat air tube, and is used to clamp the opening of the packaging bag when the flat air tube is filled with nitrogen; a hot plate, which is located below the clamping plate assembly and has no mechanical connection with the clamping plate assembly, and the hot plate does not contact the packaging bag when the flat air tube fills the packaging bag with nitrogen; a linkage assembly, which is located in an area close to the hot plate, and is used to use the upward displacement of the flat air tube as a power for the hot plate to approach the packaging bag; or to use the downward displacement of the flat air tube as a power for the hot plate to move away from the packaging bag, thereby forming a state in which the hot plate can continuously supply heat.

[0007] Furthermore, a plate seat is provided on the side of the hot plate close to the packaging bag, and the side of the plate seat away from the hot plate is arc-shaped, and the plate seat is a heat insulation component; the linkage assembly includes: a transverse ramp, the transverse ramp is located on the side of the hot plate away from the plate seat, and seat shafts are provided at both ends of the plate seat, and the seat shafts are rotatably installed on the two ends of the transverse ramp through bearings, the inner cavity of the transverse ramp is an arc-shaped structure adapted to the plate seat, and the other side of the transverse ramp is a slope structure 1; a vertical ramp, the vertical ramp is adapted to the slope structure 1 of the transverse ramp, and the vertical displacement of the flat air pipe is used to drive the vertical movement of the vertical ramp; a flipping structure, when the hot plate approaches or moves away from the packaging bag, the hot plate and the plate seat can be flipped along the seat axis through the flipping structure so that the hot plate faces the packaging bag.

[0008] Furthermore, the flipping structure includes a gear fixed on the seat shaft and a rack plate located below the gear. When the hot plate approaches or moves away from the packaging bag, the gear rolls on the rack plate to flip the hot plate 180°.

[0009] Furthermore, a plate seat is provided on the side of the hot plate away from the packaging bag; The linkage components include: The transverse ramp is located on the side of the plate seat away from the hot plate, and the other side of the transverse ramp is a slope structure; A vertically movable ramp, wherein the vertically movable ramp is adapted to the slope structure of the horizontally movable ramp, and the vertical displacement of the flat air pipe is used to drive the vertically movable ramp to move vertically; A fixed frame, the hot plate is located in the fixed frame, and insulation doors are provided on the upper and lower sides of one side of the fixed frame close to the packaging bag. The contact surface between the insulation door and the hot plate is a slope structure 2. When the transverse ramp moves transversely, it can push the plate seat to move, so that the hot plate applies pressure to the slope structure 2 to form an open state of the insulation door.

[0010] Furthermore, it also includes a reset spring, which is used to reset the hot plate laterally when the transverse ramp no longer applies pressure to the hot plate.

[0011] Furthermore, first springs are fixedly disposed at both ends of the heat-insulating door on one side away from the fixing frame, and the other end of the first spring is fixedly connected to the fixing frame, so that the heat-insulating door can be vertically reset when the pressure of the plate seat is lost.

[0012] Furthermore, the hot plate is of a drum-type structure, a plate seat is provided on one side of the hot plate close to the packaging bag, a flip seat is provided on the other side of the plate seat, the central axis of the flip seat is in a spatial position locked state, and the flip seat is a heat-insulating component; the linkage assembly includes a rotating disk fixed at both ends of the central axis and a follower plate fixed above the flat air tube, a connecting rod is hinged between the follower plate and the rotating disk, and the vertical movement of the flat air tube drives the rotating disk to rotate through the connecting rod, thereby forming a state in which the hot plate can be flipped.

[0013] Furthermore, a second guide rod is fixedly provided on one side of the hot plate close to the plate seat, the other end of the second guide rod passes through the plate seat, and a pressure block is provided on one end of the second guide rod passing through the plate seat, and a second spring is provided between the pressure block and the plate seat; and a gradual push block is also included, the gradual push block is located at a position where pressure can be applied to the pressure block after the hot plate is turned over, so that the pressure block pushes the hot plate out of the plate seat and presses it tightly on the packaging bag; The roller-type structure is an elastic structure capable of radial deformation.

[0014] Furthermore, the clamping plate assembly includes a fixed clamping plate and a movable clamping plate arranged side by side, and the fixed clamping plate is in a fixed state; and also includes a movable cylinder for driving the movable clamping plate to move.

[0015] In a second aspect, the present invention further provides a method for food processing nitrogen filling fresh-keeping packaging, characterized in that it comprises the following steps: Step 1: Place the opening of the packaging bag containing food in the clamping plate assembly, move the flat air tube downward into the packaging bag, and then control the clamping plate assembly to clamp the opening of the packaging bag; Step 2: Fill the packaging bag with nitrogen through the flat air pipe until the filling is completed; Step 3: Control the flat air tube to move upward, and through the upward displacement of the flat air tube, the linkage component drives two sets of continuously heated hot plates to approach the packaging bag and heat-seal the packaging bag; Step 4: Control the flat air tube to move downward, and do not move downward to the position of the packaging bag, so that the downward displacement of the flat air tube drives the hot plate away from the packaging bag through the linkage component; Step 5: Control the clamp assembly to release the packaging bag and remove the packaging bag.

[0016] The present invention has the following beneficial effects: (1) In the food processing nitrogen filling and fresh-keeping packaging system and method, the hot plate is not integrated into the inner surface of the fixed clamp and the movable clamp, but is located below the clamp assembly and has no mechanical connection with the clamp assembly, that is, the heat on the hot plate will not be transferred to the fixed clamp and the movable clamp. When the flat air pipe fills the packaging bag with nitrogen, the hot plate does not contact the packaging bag, so the heat of the hot plate will not be transferred to the packaging bag during nitrogen filling, so that the hot plate does not need to be heated intermittently and can be set to a continuous heating state.

[0017] (2) In the food processing nitrogen-filled fresh-keeping packaging system and method, when not heat-sealed, there is a heat-insulating component between the hot plate and the packaging bag, thereby preventing the packaging bag from being deformed due to heat conduction to the packaging bag.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall diagram of the first embodiment of the present invention; Figure 2 For the present invention Figure 1 A magnified image of area A; Figure 3 Schematic diagram of some structures in Embodiment 1 of the present invention Figure 1 ; Figure 4 Schematic diagram of some structures in Embodiment 1 of the present invention Figure 2 ; Figure 5 It is an assembly diagram of the flip structure in the first embodiment of the present invention; Figure 6 Schematic diagram of some structures in Embodiment 1 of the present invention Figure 3 ; Figure 7 For the present invention Figure 6 The state diagram of the middle vertical ramp moving upward and pushing the horizontal ramp; Figure 8 For the present invention Figure 7 The state diagram of the middle vertical ramp moving upward and pushing the horizontal ramp; Fig. 9 This is a schematic diagram of some structures in the second embodiment of the present invention. Figure 1 ; Fig.10 This is a schematic diagram of some structures in the second embodiment of the present invention. Figure 2 ; Fig.11 For the present invention Fig.10 A magnified view of area B; Fig.12 This is a schematic diagram of some structures in the second embodiment of the present invention. Figure 3 ; Fig.13 This is a schematic diagram of some structures in the second embodiment of the present invention. Figure 4 ; Fig.14 This is a schematic diagram of some structures in the third embodiment of the present invention. Figure 1 ; Fig.15 This is a schematic diagram of some structures in the third embodiment of the present invention. Figure 2 ; Fig.16 This is a schematic diagram of some structures in the third embodiment of the present invention. Figure 3 ; Fig.17 For the present invention Fig.16 Rear view of the Fig.18 For the present invention Fig.17 The state diagram of the middle flat air pipe moving upward to drive the rotating disk to rotate a certain angle; Fig.19 For the present invention Fig.18 The middle flat air pipe moves upward to drive the rotating disk to rotate into place; Fig. 20 This is a schematic diagram of some structures in the third embodiment of the present invention. Figure 4 .

[0020] In the figure, 1, fuselage; 2, platform; 31, vertical ramp; 32, horizontal ramp; 321, side slide; 33, flip structure; 331, rack plate; 332, gear; 34, guide rod; 35, fixed frame; 36, insulation door; 37, first spring; 38, return spring; 4, clamping plate assembly; 41, fixed clamping plate; 411, fixed rod; 42, movable clamping plate; 421, lug; 422, movable Moving rod; 423, movable cylinder; 51, connecting rod; 52, follower plate; 53, rotating disk; 6, turning seat; 7, gradual push block; 8, pressure block; 9, second spring; 91, second guide rod; 10, downward pressure cylinder; 11, pressure plate; 12, flat air pipe; 13, side seat; 14, L-shaped rod; 15, thick air pipe; 16, hot plate; 161, bearing seat; 17, plate seat; 171, reset block; 18, packaging bag. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements 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.

[0023] According to the following Figure 1-Figure 20 The invention describes a food processing nitrogen filling fresh-keeping packaging system and method provided in an embodiment of the invention.

[0024] In a first aspect, the present invention provides a food processing nitrogen filling freshness-keeping packaging system.

[0025] Embodiment 1: See also Figure 1 and Figure 2 The food processing nitrogen filling and fresh-keeping packaging system comprises a body 1, a platform 2 is arranged at a region of 75 cm to 80 cm in height on one side of the body 1, and a packaging bag 18 to be filled with nitrogen can be placed on the platform 2.

[0026] A downward pressure cylinder 10 is installed on the upper side of the fuselage 1 close to the platform 2, a pressing plate 11 is fixed at the lower end of the downward pressure cylinder 10, and a rough air pipe 15 is assembled below the pressing plate 11. Two groups of the rough air pipes 15 are provided, one of which is used to connect with the negative pressure equipment and can be used to evacuate the packaging bag 18, and the other rough air pipe 15 is connected with the nitrogen supply equipment and is used to fill the packaging bag 18 with nitrogen. The lower end of the rough air pipe 15 is provided as a flat air pipe 12, which can be inserted into the packaging bag 18 to reduce the degree of opening of the bag mouth of the packaging bag 18, so that the packaging bag 18 is easier to be evacuated and filled with nitrogen. Specifically, when the downward pressure cylinder 10 is extended, the flat air pipe 12 can move vertically downward and be inserted into the packaging bag 18. Conversely, when the downward pressure cylinder 10 is shortened, the flat air pipe 12 can move upward and be separated from the packaging bag 18.

[0027] Combination Figure 1 , Figure 3 and Figure 4 As shown, in order to ensure that the packaging bag 18 can be in a stable state without falling when the packaging bag 18 is vacuumed or filled with nitrogen, a clamp assembly 4 is provided here, and the clamp assembly 4 includes a fixed clamp 41 and a movable clamp 42 arranged side by side, and the fixed clamp 41 is fixed to the fixed fuselage 1 through a fixed rod 411, and two lugs 421 are provided on the upper surface of the movable clamp 42, and the lug 421 is close to the side of the fuselage 1 to fix the movable rod 422, and a movable cylinder 423 for driving the movable rod 422 is also provided on the fuselage 1, and the movable cylinder 423 can realize that the movable clamp 42 clamps the packaging bag 18 on the fixed clamp 41 when the movable cylinder 423 is extended and retracted; thereby, the clamp assembly 4 clamps the mouth of the packaging bag 18 under vacuum or inflation state, and ensures that the packaging bag 18 can be in a stable state without falling.

[0028] Like the nitrogen filling equipment in the prior art, the present invention also has a hot plate 16 that can heat-seal the packaging bag 18, but the difference is that the hot plate 16 in the present invention is not integrated in the inner surfaces of the fixed splint 41 and the movable splint 42, it is located below the splint assembly 4, and has no mechanical connection with the splint assembly 4, that is, the heat on the hot plate 16 will not be transferred to the fixed splint 41 and the movable splint 42, when the flat air pipe 12 fills the packaging bag 18 with nitrogen, the hot plate 16 does not contact the packaging bag 18, so that the heat of the hot plate 16 will not be transferred to the packaging bag 18 during nitrogen filling, so that the hot plate 16 does not need to be heated intermittently, and can be set to a continuous heating state.

[0029] In addition, the hot plate 16 needs to be equipped with a corresponding temperature control system to maintain the temperature of the controller at the required temperature.

[0030] Combination Figure 4 and Figure 5As shown, in addition, in order to facilitate the flat air tube 12 to move upward to drive the hot plate 16 close to the packaging bag 18 and heat-seal the packaging bag 18 after the nitrogen filling is completed, a linkage component is also provided here. The linkage component is located in the area close to the hot plate 16. The linkage component is used to use the upward displacement of the flat air tube 12 as the power for the hot plate 16 to approach the packaging bag 18; or to use the downward displacement of the flat air tube 12 as the power for the hot plate 16 to move away from the packaging bag 18, so that the hot plate 16 can be set to a continuous heating state.

[0031] Preferably, side seats 13 are provided at two edge positions of one side of the fuselage 1 close to the platform 2 , and the above-mentioned linkage assembly relies on the side seats 13 .

[0032] Combination Figure 4 and Figure 5 As shown, specifically, a plate seat 17 is provided on one side of the hot plate 16 close to the packaging bag 18, and the plate seat 17 is a heat insulating component, so that when the hot plate 16 is in a continuous heating state, the plate seat 17 can isolate the heat of the packaging bag 18 and the hot plate 16, and avoid the deformation of the packaging bag 18 caused by the heat being transferred to the packaging bag 18.

[0033] In addition, the linkage assembly includes a transverse ramp 32 and a vertical ramp 31 . A side slider 321 is disposed near the side seat 13 of the transverse ramp 32 . The transverse ramp 32 can slide on the side seat 13 through the side slider 321 .

[0034] Reference Figure 4 The above-mentioned transverse ramp 32 is located on the side of the hot plate 16 away from the plate seat 17, the plate seat 17 and the hot plate 16 are installed in the transverse ramp 32, and the side of the transverse ramp 32 away from the packaging bag 18 is a slope structure 1, the vertical ramp 31 is located on the side of the transverse ramp 32 away from the packaging bag 18, and is adapted to the slope structure 1 of the transverse ramp 32, an L-shaped rod 14 is fixed between the vertical ramp 31 and the thick air pipe 15, so when the thick air pipe 15 and the flat air pipe 12 move vertically, the vertical ramp 31 can be driven to move vertically, so that the vertical ramp 31 can drive the transverse ramp 32 to move horizontally, and the side slider 321 can slide on the side seat 13 to ensure the stability of the transverse ramp 32 in the horizontal direction, and the hot plate 16 and the plate seat 17 can gradually approach the packaging bag 18 to heat seal the packaging bag 18 or gradually move away from the packaging bag 18 to release the packaging bag 18.

[0035] Preferably, for example Figure 4 A limit slider is set on the slope structure of the transverse ramp 32, and a limit slide groove is set on the vertical ramp 31. The two cooperate to prevent the transverse ramp 32 and the vertical ramp 31 from separating from each other.

[0036] Furthermore, in order to achieve the above, when the hot plate 16 gradually approaches the packaging bag 18, it can also be turned to the side opposite to the packaging bag 18, that is, Figure 6 The state of formation Figure 8 state, a flip structure 33 is provided here, and seat shafts are provided at both ends of the plate seat 17, the seat shafts are rotatably installed on the two ends of the transverse ramp 32 through bearings, the side of the plate seat 17 away from the hot plate 16 is arc-shaped, and the inner cavity of the transverse ramp 32 is an arc-shaped structure adapted to the plate seat 17. When the hot plate 16 is close to the packaging bag 18, the hot plate 16 and the plate seat 17 can be flipped along the seat shaft through the flip structure 33, so that the hot plate 16 faces the packaging bag 18. At the same time, the arc-shaped side of the plate seat 17 is completely fitted in the arc-shaped inner cavity of the transverse ramp 32, so the pressure of the vertical ramp 31 on the transverse ramp 32 can be completely transmitted to the hot plate 16 through the plate seat 17, thereby increasing the thermal pressure.

[0037] Therefore, in the food processing nitrogen-filled fresh-keeping packaging system provided by the embodiment of the present invention, in the non-heat-sealing stage, an insulating plate seat 17 is provided between the hot plate 16 and the packaging bag 18, and in the heat-sealing stage, the hot plate 16 can be flipped and moved onto the packaging bag 18, thereby maintaining continuous heating of the hot plate 16.

[0038] Preferably, combined Figure 5 and Figure 6 As shown, the above-mentioned flipping structure 33 includes a gear 332 fixed on the seat shaft and a rack plate 331 located below the gear 332. When the hot plate 16 approaches or moves away from the packaging bag 18, the gear 332 rolls on the rack plate 331, causing the hot plate 16 to flip 180°.

[0039] When in use (working), the flat air tube 12 is initially in the state of being lowered to the lowest position. At this time, the packaging bag 18 carrying food is placed on the platform 2, and the end of the packaging bag 18 with an opening is placed between the fixed clamping plate 41 and the movable clamping plate 42 from below, for example Figure 6 In this case, the flat air tube 12 is inserted into the packaging bag 18, and the fixed clamp 41 and the movable clamp 42 are used to clamp the opening of the packaging bag 18. Figure 6 At this time, the packaging bag 18 is first vacuumed through the flat air pipe 12, and then the packaging bag 18 is filled with nitrogen through the flat air pipe 12. After the nitrogen filling is completed, the flat air pipe 12 can move upward and detach from the packaging bag 18 by shortening the downward pressure cylinder 10. The flat air pipe 12 and the thick air pipe 15 move upward through the L-shaped rod 14 to drive the vertical ramp 31 to move upward, so that the vertical ramp 31 can push the horizontal ramp 32, so that the hot plate 16 and the plate seat 17 gradually approach the packaging bag 18, and at the same time, the gear 332 rolls on the rack plate 331 to turn the hot plate 16 180°, forming Figure 7As the downward pressure cylinder 10 continues to shorten, the hot plate 16 and the plate seat 17 continue to approach the bag 18, and the gear 332 is disengaged from the rack plate 331, so that the hot plate 16 is no longer flipped, so that it gradually approaches the bag 18 in a posture facing the bag 18, and then can be formed Figure 8 The hot pressing state shown.

[0040] After the hot pressing is completed, the flat air pipe 12 is controlled to descend again, so that the flat air pipe 12 descends to Figure 7 The heat-sealed packaging bag 18 can be taken out by controlling the fixed clamping plate 41 and the movable clamping plate 42 to open.

[0041] After removal, the flat air tube 12 is controlled to continue to descend to Figure 6 The height shown is waiting for the next heat seal.

[0042] Embodiment 2: Combination Figure 9-13 As shown, the difference between this embodiment and the first embodiment lies in the linkage assembly. Specifically, a plate seat 17 is provided on the side of the hot plate 16 away from the packaging bag 18. The plate seat 17 has no special shape and only needs to be able to support the hot plate 16. The linkage assembly in this embodiment includes a transverse ramp 32 and a vertical ramp 31. A reset block 171 is provided at a position of the plate seat 17 close to the side seat 13. The plate seat 17 can slide on the side seat 13 through the reset block 171.

[0043] In addition, the transverse ramp 32 is located on the side of the plate seat 17 away from the hot plate 16, and the other side of the transverse ramp 32 is a slope structure. The vertical ramp 31 is adapted to the slope structure of the transverse ramp 32, and the vertical displacement of the flat air pipe 12 is used to drive the vertical ramp 31 to move vertically.

[0044] A fixing frame 35 is also provided, and the fixing frame 35 is located on a side of the plate seat 17 close to the packaging bag 18, and the fixing frame 35 is fixed on two side seats 13, and the hot plate 16 is located in the fixing frame 35, and insulating doors 36 are provided on the upper and lower sides of the side of the fixing frame 35 close to the packaging bag 18, and the insulating door 36 can slide up and down in the fixing frame 35, and the contact surface between the insulating door 36 and the hot plate 16 is a slope structure 2, and the transverse ramp 32 can push the plate seat 17 to move when it moves transversely, so that the hot plate 16 applies pressure to the slope structure 2, forming a state in which the upper insulating door 36 moves upward and the lower insulating door 36 moves downward, that is, the two insulating doors 36 are opened. After the insulating door 36 is opened, the hot plate 16 can continuously approach the packaging bag 18 and heat-seal the packaging bag 18.

[0045] Preferably, balls or rollers are provided on the contact surface between the heat plate 16 and the heat insulation door 36 to reduce the friction between the two.

[0046] Preferably, a return spring 38 is also provided, one end of the return spring 38 is fixed to the return block 171, and the other end is fixed to the side seat 13. When the transverse ramp 32 applies pressure to the hot plate 16 and makes the hot plate 16 gradually approach the packaging bag 18, the return spring 38 is in a compressed state. Conversely, when the transverse ramp 32 no longer applies pressure to the hot plate 16, the hot plate 16 is laterally reset by the return spring 38.

[0047] Preferably, additional blocks are fixed at both ends of the side of the thermal insulation door 36 away from the fixed frame 35, and a first spring 37 is provided on the additional block. The other end of the first spring 37 is fixedly connected to the fixed frame 35, so that the thermal insulation door 36 can be vertically reset and closed again when the pressure of the plate seat 17 is lost; further, a guide rod 34 is provided in the first spring 37, one end of the guide rod 34 is fixed to the fixed frame 35, and the other end passes through the additional block in the vertical direction, so as to guide the up and down movement of the thermal insulation door 36.

[0048] The steps of using it (working) are roughly the same as those of the first embodiment. Specifically, in the initial state, the flat air tube 12 is in a state of being lowered to the lowest position. At this time, the packaging bag 18 carrying food is placed on the platform 2, and the end of the packaging bag 18 with an opening is placed between the fixed clamping plate 41 and the movable clamping plate 42 from below. At this time, the flat air tube 12 is in a state of being inserted into the packaging bag 18, and then the fixed clamping plate 41 and the movable clamping plate 42 are used to clamp the opening of the packaging bag 18. At this time, the packaging bag 18 is first vacuumed through the flat air tube 12, and then the packaging bag 18 is filled with nitrogen through the flat air tube 12. After the nitrogen filling is completed, the cylinder 10 is pressed down to shorten the packaging bag 18. , so that the flat air tube 12 can move upward and separate from the packaging bag 18, the flat air tube 12 and the thick air tube 15 move upward through the L-shaped rod 14, so that the vertical ramp 31 can push the horizontal ramp 32, so that the hot plate 16 and the plate seat 17 gradually approach the packaging bag 18 and push open the insulation door 36, the upper insulation door 36 moves upward, and the lower insulation door 36 moves downward, and stretches the first spring 37 on each of them, the insulation door 36 no longer blocks the hot plate 16 from approaching the packaging bag 18, as the downward pressure cylinder 10 continues to shorten, the hot plate 16 and the plate seat 17 continue to approach the packaging bag 18, and heat-press and seal the packaging bag 18.

[0049] After the hot pressing is completed, the flat air pipe 12 is controlled to descend again, so that the flat air pipe 12 descends to Figure 7 The heat-sealed packaging bag 18 can be taken out by controlling the fixed clamping plate 41 and the movable clamping plate 42 to open.

[0050] After taking out, the flat air tube 12 is controlled to continue to descend, waiting for the next heat sealing.

[0051] Embodiment three: Combination Figure 14-Figure 20As shown, the difference between this embodiment and the above two embodiments also lies in the linkage assembly, wherein the hot plate 16 is a drum-type structure, and a plate seat 17 is also provided on the side close to the packaging bag 18, and a flip seat 6 is provided on the other side of the plate seat 17, and the two are fixed, and the flip seat 6 has a central axis, wherein the axis is in a spatial position locked state (no displacement can occur in any direction), but it has the freedom to rotate along its own center of circle, and it is mounted on the side seat 13 through a bearing, and the flip seat 6 is a heat-insulating component; the linkage assembly includes a rotating disk 53 fixed at both ends of the central axis and a follower plate 52 fixed above the flat air tube 12, and a connecting rod 51 is hinged between the follower plate 52 and the rotating disk 53, and the vertical movement of the flat air tube 12 drives the rotating disk 53 to rotate through the connecting rod 51, and the rotation of the rotating disk 53 can drive the entire flip seat 6 to rotate, so that the hot plate 16 can be flipped, so that the hot plate 16 faces the plate seat 17.

[0052] In the initial state of the food processing nitrogen filling and fresh-keeping packaging system provided by the embodiment of the present invention, there is a turning seat 6 between the hot plate 16 and the packaging bag 18, so the heat of the hot plate 16 will not be transmitted to the packaging bag 18, so that the hot plate 16 can be set to a continuous heating state, avoiding the need to wait until cooling before the next heat sealing.

[0053] In actual operation, in order to enable the hot plate 16 to reach the heat-sealed position of the packaging bag 18, it is necessary to increase the moving distance of the hot plate 16, so a guide rod 91 is fixedly provided on one side of the hot plate 16 close to the plate seat 17, and the other end of the guide rod 91 passes through the plate seat 17, and the guide rod 91 is fixedly connected to the rotating shaft of the drum structure, such as Fig.15 and Fig. 20 As shown, a bearing seat 161 is provided at the shaft end of the drum-type structure, and the other end of the bearing seat 161 is fixedly connected to the second guide rod 91, and a pressure block 8 is fixed to the end of the second guide rod 91 away from the bearing seat 161, and a second spring 9 is provided between the pressure block 8 and the plate seat 17; a gradual push block 7 is also provided, and the gradual push block 7 is fixed on the side seat 13. When the rotating disk 53 rotates, the turning seat 6 can be driven to rotate through the central axis, and the turning seat 6 can drive the plate seat 17 to rotate, and the plate seat 17 drives the hot plate 16 to turn over through the second guide rod 91 and the bearing seat 161, so that the hot plate 16 can turn over, and in the process of the hot plate 16 gradually turning over, the gradual push block 7 can gradually push the pressure block 8, so that the pressure block 8 pushes the hot plate 16 out of the plate seat 17 and presses it on the packaging bag 18 (from Figure 17-Figure 18 process), as the hot plate 16 continues to flip, a Fig.19 The state shown is the hot pressing state.

[0054] In addition, during operation, the staff holds the lower part of the packaging bag 18 and generates a downward pulling force on the lower part of the packaging bag 18, so the hot plate 16 of the drum structure is Figure 18-Figure 19 The packaging bag 18 will not be lifted during the process.

[0055] Preferably, the drum-type structure is an elastic structure that can be deformed in the radial direction, so that it can squeeze the packaging bag 18 .

[0056] When in use (working), the flat air tube 12 is in the state of being dropped to the lowest position in the initial state. At this time, the packaging bag 18 carrying food is placed on the platform 2, and the end of the packaging bag 18 with an opening is placed between the fixed clamping plate 41 and the movable clamping plate 42 from below. At this time, the flat air tube 12 is in the state of being inserted into the packaging bag 18, and then the fixed clamping plate 41 and the movable clamping plate 42 are used to clamp the opening of the packaging bag 18; at this time, the packaging bag 18 is first vacuumed through the flat air tube 12, and then the packaging bag 18 is filled with nitrogen using the flat air tube 12. After the nitrogen filling is completed, the cylinder 10 is shortened by pressing down, so that the flat air tube 12 can move upward and detach from the packaging bag 18. The flat air tube 12 drives the rotating disk 53 to rotate through the connecting rod 51, and when the rotating disk 53 rotates, it can drive the flip seat 6 to rotate. Refer to Fig.17 , for Fig.17 From the perspective of the left rotating disk 53, the rotating disk 53 on the right rotates counterclockwise, and the rotating disk 53 on the right rotates clockwise, which can form Fig.18 The state shown in the figure makes the gradually pushing block 7 gradually push the pressed block 8 until the Fig.19 The state shown is that the roller-type structure is compressed and deformed.

[0057] On the other hand, the present invention also provides a method for food processing nitrogen filling fresh-keeping packaging, comprising the following steps: Step 1: Place the opening of the packaging bag 18 containing food in the clamping plate assembly 4, move the flat air tube 12 downward into the packaging bag 18, and then control the clamping plate assembly 4 to clamp the opening of the packaging bag 18; Step 2: Filling the packaging bag 18 with nitrogen through the flat air pipe 12 until the filling is completed; Step 3: Control the flat air tube 12 to move upward, and through the upward displacement of the flat air tube 12, the linkage assembly drives two sets of continuously heated hot plates 16 to approach the packaging bag 18 and heat-seal the packaging bag 18; Step 4: Control the flat air tube 12 to move downward, and do not move downward to the position of the packaging bag 18, so that the downward displacement of the flat air tube 12 drives the hot plate 16 away from the packaging bag 18 through the linkage component; Step 5: Control the clamping plate assembly 4 to release the packaging bag 18 and remove the packaging bag 18.

Claims

1. A food processing nitrogen filling and fresh-keeping packaging system, characterized in that: include: A flat air tube (12), wherein the flat air tube (12) is capable of moving vertically; A clamping plate assembly (4), the clamping plate assembly (4) being located on both sides below the flat air tube (12), the clamping plate assembly (4) being used to clamp the opening of the packaging bag (18) when the flat air tube (12) is filled with nitrogen; a hot plate (16), wherein the hot plate (16) is located below the clamping plate assembly (4) and has no mechanical connection with the clamping plate assembly (4); when the flat air pipe (12) fills the packaging bag (18) with nitrogen, the hot plate (16) does not contact the packaging bag (18); A linkage component, the linkage component is located in a region close to the hot plate (16), the linkage component is used to use the upward displacement of the flat air tube (12) as a driving force for the hot plate (16) to approach the packaging bag (18); or to use the downward displacement of the flat air tube (12) as a driving force for the hot plate (16) to move away from the packaging bag (18), thereby forming a state in which the hot plate (16) can continuously supply heat.

2. A food processing nitrogen filling fresh-keeping packaging system according to claim 1, characterized in that: A plate seat (17) is provided on a side of the hot plate (16) close to the packaging bag (18), and a side of the plate seat (17) away from the hot plate (16) is arc-shaped, and the plate seat (17) is a heat-insulating component; The linkage components include: A transverse ramp (32), the transverse ramp (32) is located on a side of the hot plate (16) away from the plate seat (17), the plate seat (17) has seat shafts at both ends, the seat shafts are rotatably mounted on the two ends of the transverse ramp (32) through bearings, the inner cavity of the transverse ramp (32) is an arc-shaped structure adapted to the plate seat (17), and the other side of the transverse ramp (32) is a slope structure 1; A vertically movable ramp (31), wherein the vertically movable ramp (31) and the horizontally movable ramp (32) have a matching slope structure, and the vertical displacement of the flat air pipe (12) is used to drive the vertically movable ramp (31) to move vertically; A flipping structure (33) is provided, wherein when the hot plate (16) approaches or moves away from the packaging bag (18), the hot plate (16) and the plate seat (17) can be flipped along the seat axis through the flipping structure (33), so that the hot plate (16) faces the packaging bag (18).

3. A food processing nitrogen filling fresh-keeping packaging system according to claim 2, characterized in that: The turning structure (33) comprises a gear (332) fixed on the seat shaft and a rack plate (331) located below the gear (332); when the hot plate (16) approaches or moves away from the packaging bag (18), the gear (332) rolls on the rack plate (331), causing the hot plate (16) to turn 180 degrees.

4. A food processing nitrogen filling fresh-keeping packaging system according to claim 1, characterized in that: A plate seat (17) is provided on a side of the hot plate (16) away from the packaging bag (18); The linkage components include: A transverse ramp (32), the transverse ramp (32) being located on a side of the plate seat (17) away from the hot plate (16), and the other side of the transverse ramp (32) being a slope structure; A vertically movable ramp (31), wherein the vertically movable ramp (31) and the horizontally movable ramp (32) have matching slope structures, and the vertical displacement of the flat air pipe (12) is used to drive the vertically movable ramp (31) to move vertically; A fixed frame (35), the hot plate (16) is located in the fixed frame (35), and an insulating door (36) is provided at the upper and lower sides of one side of the fixed frame (35) close to the packaging bag (18), and the contact surface between the insulating door (36) and the hot plate (16) is a second slope structure, and when the transverse ramp (32) moves transversely, it can push the plate seat (17) to move, so that the hot plate (16) applies pressure to the second slope structure, thereby forming an open state of the insulating door (36).

5. A food processing nitrogen filling fresh-keeping packaging system according to claim 4, characterized in that: It also includes a return spring (38), wherein the return spring (38) is used to return the hot plate (16) laterally when the transverse shift ramp (32) no longer applies pressure to the hot plate (16).

6. A food processing nitrogen filling fresh-keeping packaging system according to claim 5, characterized in that: A first spring (37) is fixedly disposed at both ends of a side of the heat-insulating door (36) away from the fixing frame (35); the other end of the first spring (37) is fixedly connected to the fixing frame (35), so that the heat-insulating door (36) can be vertically reset when the pressure of the plate seat (17) is lost.

7. A food processing nitrogen filling fresh-keeping packaging system according to claim 1, characterized in that: The hot plate (16) is of a drum-type structure. A plate seat (17) is provided on one side of the hot plate (16) close to the packaging bag (18). A flip seat (6) is provided on the other side of the plate seat (17). The central axis of the flip seat (6) is in a spatially locked state. The flip seat (6) is a heat-insulating component. The linkage assembly comprises a rotating disk (53) fixed at both ends of the central axis and a follower plate (52) fixed above the flat air tube (12); a connecting rod (51) is hingedly connected between the follower plate (52) and the rotating disk (53); the vertical movement of the flat air tube (12) drives the rotating disk (53) to rotate via the connecting rod (51), thereby forming a state in which the hot plate (16) can be turned over.

8. A food processing nitrogen filling fresh-keeping packaging system according to claim 7, characterized in that: A second guide rod (91) is fixedly provided on one side of the hot plate (16) close to the plate seat (17); the other end of the second guide rod (91) passes through the plate seat (17); and a pressure block (8) is provided on one end of the second guide rod (91) passing through the plate seat (17); a second spring (9) is provided between the pressure block (8) and the plate seat (17); It also includes a gradually pushing block (7), wherein the gradually pushing block (7) is located at a position where it can apply pressure to the pressure block (8) after the hot plate (16) is turned over, so that the pressure block (8) pushes the hot plate (16) out of the plate seat (17) and presses it onto the packaging bag (18); The roller-type structure is an elastic structure capable of radial deformation.

9. A food processing nitrogen filling fresh-keeping packaging system according to any one of claims 1 to 8, characterized in that: The clamping plate assembly (4) comprises a fixed clamping plate (41) and a movable clamping plate (42) arranged side by side, and the fixed clamping plate (41) is in a fixed state; It also includes a movable cylinder (423) for driving the movable clamping plate (42) to move.

10. A method for nitrogen filling and fresh-keeping packaging of food processing, characterized in that: The following steps are involved: Step 1: placing the opening of a packaging bag (18) containing food into the clamping plate assembly (4), moving the flat air tube (12) downward into the packaging bag (18), and then controlling the clamping plate assembly (4) to clamp the opening of the packaging bag (18); Step 2: Filling the packaging bag (18) with nitrogen through the flat air pipe (12) until the filling is completed; Step 3: Control the flat air tube (12) to move upward, and through the upward displacement of the flat air tube (12), the linkage assembly drives two sets of continuously heated hot plates (16) to approach the packaging bag (18), and heat-seal the packaging bag (18); Step 4: Control the flat air tube (12) to move downward, and the flat air tube (12) does not move downward to the position of the packaging bag (18), so that the downward displacement of the flat air tube (12) drives the hot plate (16) away from the packaging bag (18) through the linkage component; Step 5: Control the clamping plate assembly (4) to release the packaging bag (18), and remove the packaging bag (18).

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