Vacuum food packaging machine with disinfection and sterilization functions

Abstract

The invention discloses a disinfection and sterilization vacuum food packaging machine which comprises a centralizing piece for keeping a bag opening in a vertical state, a protection piece for preventing a packaging bag from being extruded is arranged on the centralizing piece, a supporting piece for disinfecting and sterilizing the packaging bag is arranged on the centralizing piece, and a sealing piece for sealing the supporting piece is arranged on the centralizing piece; through the linkage design of the centralizing piece and the protection piece, vertical positioning and flexible clamping of the bag opening are achieved, leakage of liquid food soup is effectively reduced, the sleeve of the centralizing piece dynamically clamps the bag opening under the action of the first spring, and the sleeve is passively opened to avoid food extrusion when sliding downwards in cooperation with the V-shaped cambered surface structure of the protection piece; the bag opening is ensured to be vertical through rear reset clamping, the soup leakage rate is reduced, the bag is particularly suitable for liquid-containing food such as sauce marinade and instant hot pot, and overflow prevention and accurate positioning are both considered.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and specifically to a vacuum food packaging machine for disinfection and sterilization. Background Art

[0002] A household vacuum food packaging machine is a small multi-functional vacuum packaging device suitable for household scenarios. Its structure usually consists of two sets of hinged vacuum chambers. When in use, the bag mouth of the food packaging bag needs to be manually and flatly placed in one of the vacuum chambers first. Subsequently, the vacuum chamber cover is pushed. After the two vacuum chambers are closed, a closed space for accommodating the bag mouth of the packaging bag is formed, creating conditions for subsequent air extraction and sealing processes. After the cover closing is completed, the device starts the vacuum pump to simultaneously perform air extraction operations on the inside of the vacuum chamber and the packaging bag. As the air gradually discharges, a vacuum state is quickly formed inside the packaging bag, effectively inhibiting the reproduction of microorganisms and the oxidation reaction of food. When the vacuum degree reaches the preset standard, the heat-sealing transformer is powered on to precisely heat the sealing part of the packaging bag, and the bag mouth material is melted and bonded through high temperature to form a tight seal, completely blocking the entry of external air.

[0003] Chinese Patent with Publication No. CN106115001A discloses a vacuum food packaging machine for disinfection and sterilization. Its structure includes a bottom shell and an upper cover. A sealing tape is provided on the bottom shell. A sealing chamber is provided beside the sealing tape. An induction probe is provided on the side of the bottom shell. A heat dissipation slot is provided at the back of the bottom shell. The upper cover is provided beside the heat dissipation slot. High-temperature adhesive tape is provided inside the upper cover. A temperature sensor is provided beside the high-temperature adhesive tape. An ultraviolet disinfection lamp is provided beside the temperature sensor. Locking clasps are provided at both ends of the upper cover. A cutting knife is provided outside the upper cover. A display screen is provided beside the cutting knife. Function buttons are provided beside the display screen. Indicator lights are provided beside the function buttons. An air tank connecting pipe is provided beside the indicator lights. A handle groove is provided at the edge of the upper cover. The beneficial effect is that it can perform disinfection and sterilization while sealing food to prevent food spoilage.

[0004] However, the above-mentioned prior art has the following deficiencies: When a household vacuum food packaging machine seals a food packaging bag after it is filled with food, it mostly needs to be placed flat on a table to facilitate the flat placement of the bag mouth into the vacuum chamber. However, when the food contains soup, placing it flat will cause leakage. It is necessary to hold the food bag in one hand and the packaging machine in the other hand to keep the food bag in a vertical state for packaging. This makes the operation extremely inconvenient. Not only does it require more energy and physical strength, but when operating the packaging machine with one hand, it is difficult to precisely control the vacuum air extraction and heat sealing processes, and it is easy to have an imperfect seal, reducing the packaging success rate. In addition, the unstable operating posture may also cause the soup to spill out, pollute the operating table, and even may seep into the interior of the packaging machine, damaging the equipment and affecting its service life. Summary of the Invention

[0005] The object of the present invention is to solve the problem that after a household vacuum food packaging machine is used to seal a food packaging bag after the food is placed in the bag, it is usually necessary to place the bag flat on a table to facilitate the bag opening to be placed flat in the vacuum chamber. However, when the food contains soup, placing the bag flat may cause leakage. It is necessary to hold the food bag with one hand and the packaging machine with the other hand to keep the food bag in a vertical state for sealing, which makes the operation extremely inconvenient. It not only requires more energy and physical strength, but also it is difficult to accurately control the vacuum extraction and heat sealing processes when operating the packaging machine with one hand, which is prone to loose sealing, reducing the success rate of packaging. In addition, an unstable operating posture may also cause soup to spill, contaminate the operating table, and even penetrate into the interior of the packaging machine, damaging the equipment and shortening its service life. A vacuum food packaging machine for disinfection and sterilization is provided.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a vacuum food packaging machine for disinfection and sterilization, comprising: a straightening member for keeping the bag opening in a vertical state, a protective member provided on the straightening member for preventing the packaging bag from being squeezed, a supporting member provided on the straightening member for disinfecting the packaging bag, and a sealing member provided on the straightening member for sealing the supporting member;

[0007] The straightening member includes a fixed column, and the fixed column is provided with a clamping member 1 and a clamping member 2;

[0008] The first clamping member includes a right clamping member and a left clamping member, and a centering groove is provided between the right clamping member and the left clamping member, and the protective member is slidably plugged into the centering groove;

[0009] The right clamping member includes a mounting box fixedly connected to the inner side of the fixed column, a movable groove is formed through the side end of the mounting box, a movable plate is slidably connected to the movable groove, a spring is fixedly connected between the movable plate and the inner wall of the movable groove, one end of the movable plate is fixedly connected to the fixed rod, and the movable plate passes through the movable groove, the outer side of the fixed rod is rotatably connected to the sleeve, and the other end of the movable plate is fixedly connected to the linkage block, and the linkage block passes through the movable groove;

[0010] Among them, when the protective part is placed on the sleeve, the protective part moves downward due to gravity, thereby pushing the sleeve and the fixed rod outward, driving the spring to extend, and after the protective part moves down and passes through the sleeve, the spring drives the sleeve to reset, clamping the packaging bag mouth that has not passed through, so that the packaging bag remains in a vertical state, and moving the bag mouth into the packaging machine body.

[0011] As a further solution of the present invention: the second clamping member is arranged below the first clamping member, and the packaging machine body is arranged on the second clamping member. The left clamping member also includes an installation box, a movable groove, a movable plate, a spring 1, a fixed rod, a sleeve and a linkage block, and the right clamping member and the left clamping member are mirror-symmetrically distributed on both sides of the straightening groove.

[0012] As a further solution of the present invention: the second clamping member also includes a right clamping member, a left clamping member and a straightening groove.

[0013] As a further solution of the present invention: the packaging machine main body includes a connecting ear 1 fixedly connected to the fixing rod in the left clamping part of the second clamping part, and the bottom end of the connecting ear 1 is fixedly connected to the vacuum chamber 1. The packaging machine main body also includes a connecting ear 2 fixedly connected to the fixing rod in the right clamping part of the second clamping part, and the bottom end of the connecting ear 2 is fixedly connected to the vacuum chamber 2.

[0014] As a further solution of the present invention: the protective component includes a protective shell, a through groove is opened through the side end of the protective shell, a counterweight block is inserted into the protective shell, and a straightening plate is fixedly connected to the side end of the protective shell, and the straightening plate is slidably inserted into the straightening groove.

[0015] As a further solution of the present invention: the support member includes a connecting groove that is opened through the top of the fixed column, a rod is slidably inserted in the connecting groove, one end of the rod is fixedly connected to a support plate, and a disinfection lamp group is fixedly provided on the inner wall of the support plate.

[0016] As a further solution of the present invention: a limiting groove is provided at one end of the insertion rod, a cavity is provided on the inner wall of the connecting groove, a second spring is fixedly connected to the inner wall of the cavity, one end of the second spring is fixedly connected to a limiting column, and the limiting column is plugged into the cavity, and the end face of the limiting column is clamped into the limiting groove.

[0017] As a further solution of the present invention: the closing part includes a spring three fixedly connected to the bottom end of the installation box in the left clamping part of the second clamping part, the bottom end of the spring three is fixedly connected to the closing box, the bottom end of the closing box is provided with an avoidance groove, and the top end of the support plate passes through the avoidance groove.

[0018] As a further solution of the present invention: a sliding groove is provided on the inner wall of the closing box, one end of the straightening plate passes through the straightening groove and is slidably plugged into the sliding groove, a support plate is fixedly connected to the inner wall of the closing box, and the support plate is arranged on one side of the straightening groove, and a positioning groove is provided on the outer side of the closing box.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention utilizes a coordinated design of a straightening member and a protective member to achieve vertical positioning and flexible clamping of the bag opening, effectively reducing leakage of liquid food. The straightening member's sleeve, under the action of a spring, dynamically clamps the bag opening. Combined with the protective member's V-shaped curved surface, the sleeve passively opens during downward movement to prevent squeezing of the food. Afterward, the sleeve resets and clamps to ensure the bag opening is vertical, minimizing leakage. This makes it particularly suitable for liquid foods such as marinated sauces and instant hot pots, ensuring both overflow prevention and precise positioning.

[0021] 2. The present invention utilizes a coordinated disinfection mechanism between the support and closure components to create a safe and efficient ultraviolet disinfection system. The U-shaped support plate of the support component is equipped with multiple sets of ultraviolet lamps, which, combined with height-adjustable rods, achieve three-dimensional disinfection of packaging bags of different specifications. The closure box and support plate form a sealed cavity to prevent ultraviolet light leakage, ensuring the effective disinfection of pathogens such as E. coli and mold while also eliminating the risk of human exposure, thus meeting the hygienic and safety requirements of food packaging.

[0022] 3. The present invention significantly improves packaging efficiency and operational convenience through full-process mechanical linkage and adaptive adjustment. The counterweight block and the straightening plate of the protective part are gravity-driven to slide down without the need for additional power. The opening plate and the spring of the closing part three-link control the opening and closing of the sleeve, so that the vacuum chamber opens and closes automatically, and the positioning error of the bag opening is reduced. The combination of the limit groove and the positioning groove allows the support plate height to be quickly adjusted with one hand, adapting to packages of different weights, and significantly improving the practicality of home and small commercial scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall storage state of the present invention;

[0024] Figure 2 This is a cross-sectional view of the entire storage state of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall unfolded state of the present invention;

[0026] Figure 4 This is a cross-sectional view of the overall expanded state of the present invention;

[0027] Figure 5 This is a schematic diagram of the overall sealing state of the present invention;

[0028] Figure 6 This is a cross-sectional view of the overall sealing state of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the straightening member in the present invention;

[0030] Figure 8 In the present invention Figure 7 Schematic diagram of the structure at A;

[0031] Figure 9 It is a structural diagram of the packaging machine main body in the present invention;

[0032] Figure 10 It is a structural schematic diagram of the protective member in the present invention;

[0033] Figure 11 It is a structural schematic diagram of the support member in the present invention;

[0034] Figure 12 In the present invention Figure 11 Schematic diagram of the structure at B;

[0035] Figure 13 1 is a bottom view of the closed box of the present invention;

[0036] Figure 14 1 is a schematic diagram of the top view of the closed box of the present invention;

[0037] Figure 15 is a cross-sectional view of the closure member of the present invention in an expanded state;

[0038] Figure 16 It is a cross-sectional view of the closure member in the sealed state according to the present invention.

[0039] In the figure: 1, straightening member; 11, fixed column; 12, clamping member 1; 121, right clamping member; 1211, mounting box; 1212, movable groove; 1213, movable plate; 1214, spring 1; 1215, fixed rod; 1216, sleeve; 1217, linkage block; 122, left clamping member; 123, straightening groove; 13, clamping member 2; 14, packaging machine body; 141, connecting ear 1; 142, vacuum chamber 1; 143, connecting Ear two; 144, vacuum chamber two; 2, protective part; 21, protective shell; 22, through slot; 23, counterweight; 24, straightening plate; 3, support part; 31, connecting slot; 32, plug rod; 33, support plate; 34, disinfection lamp group; 35, limit slot; 36, cavity; 37, spring two; 38, limit column; 4, closing part; 41, spring three; 42, closing box; 43, avoidance slot; 44, sliding slot; 45, support plate; 46, positioning slot. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components 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. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0042] Reference Figures 1 to 6 In an embodiment of the present invention, a vacuum food packaging machine for disinfection and sterilization includes a straightening member 1 for keeping the bag opening in a vertical state during the packaging process to prevent soup leakage, a protective member 2 is provided on the straightening member 1 to prevent the packaging bag from being squeezed and causing the food in the bag to overflow, a supporting member 3 is provided on the straightening member 1 to disinfect the packaging bag, and a sealing member 4 is provided on the straightening member 1 to make the supporting member 3 airtight to prevent it from contacting the human body during the disinfection process and causing damage to the human body.

[0043] Reference Figures 7 to 9, the straightening member 1 includes a fixing column 11. A first clamping member 12 and a second clamping member 13 are arranged on the fixing column 11, and the second clamping member 13 is arranged below the first clamping member 12. There are four groups of fixing columns 11, symmetrically distributed on both sides of the first clamping member 12 and the second clamping member 13. A packaging machine main body 14 is arranged on the second clamping member 13. The first clamping member 12 includes a right clamping member 121 and a left clamping member 122, and a straightening groove 123 is arranged between the right clamping member 121 and the left clamping member 122. The protection member 2 is slidably inserted into the straightening groove 123. The second clamping member 13 also includes a right clamping member 121, a left clamping member 122 and a straightening groove 123. The right clamping member 121 includes a mounting box 1211 fixedly connected to the inner side of the fixing column 11. The cross-section of the mounting box 1211 is rectangular. A moving groove 1212 is formed through the side end of the mounting box 1211. The cross-section of the moving groove 1212 is in the shape of a Chinese character 'zhong'. A moving plate 1213 is slidably connected in the moving groove 1212. The cross-section of the moving plate 1213 is rectangular. One end of the moving plate 1213 is fixedly connected with a first spring 1214, and one end of the first spring 1214 is fixedly connected with the inner wall of the moving groove 1212. One end of the moving plate 1213 is fixedly connected with a fixing rod 1215, and the moving plate 1213 penetrates through the moving groove 1212. A sleeve 1216 is rotatably connected to the outer side of the fixing rod 1215. The other end of the moving plate 1213 is fixedly connected with a linkage block 1217, and the linkage block 1217 penetrates through the moving groove 1212. There are two groups of the mounting box 1211, the moving groove 1212, the moving plate 1213, the first spring 1214 and the linkage block 1217, symmetrically distributed at both ends of the fixing rod 1215. The left clamping member 122 also includes a mounting box 1211, a moving groove 1212, a moving plate 1213, a first spring 1214, a fixing rod 1215, a sleeve 1216 and a linkage block 1217, and the right clamping member 121 and the left clamping member 122 are mirror-symmetrically distributed on both sides of the straightening groove 123. The packaging machine main body 14 includes a first connecting ear 141 fixedly connected to the fixing rod 1215 in the left clamping member 122 of the second clamping member 13. There are two groups of the first connecting ears 141, symmetrically distributed on the outer cylindrical surface of the fixing rod 1215, and the distance between the two groups of the first connecting ears 141 is greater than the sleeve 1216. The bottom end of the first connecting ear 141 is fixedly connected with a first vacuum chamber 142. The packaging machine main body 14 also includes a second connecting ear 143 fixedly connected to the fixing rod 1215 in the right clamping member 121 of the second clamping member 13. There are two groups of the second connecting ears 143, symmetrically distributed on the outer cylindrical surface of the fixing rod 1215, and the distance between the two groups of the second connecting ears 143 is greater than the sleeve 1216. The bottom end of the second connecting ear 143 is fixedly connected with a second vacuum chamber 144. The first vacuum chamber 142 and the second vacuum chamber 144 adopt the existing technology. A group of O-shaped convex blocks are arranged on the corresponding surfaces of the first vacuum chamber 142 and the second vacuum chamber 144. The O-shaped convex block in the first vacuum chamber 142 is a heating block, which generates heat after being electrified and melts the packaging bag material. The O-shaped convex block in the second vacuum chamber 144 is a pressing block, which cooperates with the heating block to press the bag mouth. An air nozzle is arranged in the O-shaped convex block in the first vacuum chamber 142.The air nozzle is connected to the vacuum pump provided inside the vacuum chamber 142 to guide the exhaust of air. When the packaging bag moves to the inside of the two sets of O-shaped protrusions, the vacuum pump starts the exhaust procedure. As the vacuum pump runs, the air in the packaging bag is quickly discharged through the air nozzle, forming a pre-sealed bonding state. At the same time, the heating block is powered on and heated to the melting temperature of the material. Its O-shaped curved surface structure conducts heat to the bag opening, causing the bag opening to melt. During the melting process, the heating block of the vacuum chamber 142 and the pressing block of the vacuum chamber 2 144 are always in contact with both sides of the bag opening, so that the two layers of film are completely bonded. The heating block is powered off and enters a natural cooling phase until the sealing surface solidifies. As the protective member 2 slides down the straightening groove 123, its bottom curved surface contacts the sleeve 1216 and exerts a lateral thrust, forcing the sleeve 1216 to slide outward, overcoming the elastic force of spring 1214. This drives the linkage block 1217 to move synchronously, causing the vacuum chamber to open along with the connecting ear to make way for the protective shell 21. After the protective member 2 passes, spring 1214 resets, and the sleeve 1216 retracts toward the center, creating a clamping force on the bag opening. Combined with the inclined guidance of the opening plate 45, this ensures that the packaging bag always remains upright during the upward and downward movement, preventing the bag opening from tilting or folding.

[0044] The above solution is adopted: through the dynamic clamping of the sleeve 1216 and the inclined straightening of the expansion plate 45, it is ensured that the bag opening is always perpendicular to the sealing surface of the vacuum chamber when packaging soup-containing foods, avoiding the soup overflow problem caused by the skewed bag opening in traditional packaging. The cooperation between the spring 1214 and the movable plate 1213 enables the sleeve 1216 to adapt to packaging bags of different thicknesses, and automatically expands when the protective member 2 passes to avoid squeezing the food in the bag. After passing, the clamped bag opening is immediately reset, solving the problem of food overflow or bag opening wrinkles that are easily caused by traditional rigid clamping.

[0045] Reference Figure 10 The protective member 2 includes a protective shell 21. The cross-section of the protective shell 21 is V-shaped, and the bottom end of the protective shell 21 is an arc surface. A through slot 22 is provided on the side end of the protective shell 21. There are multiple groups of through slots 22, which are evenly distributed on both sides of the protective shell 21. A counterweight 23 is inserted into the protective shell 21. The side end of the protective shell 21 is fixedly connected to a straightening plate 24. There are two groups of straightening plates 24, which are symmetrically distributed on both sides of the protective shell 21. The straightening plates 24 are slidably plugged into the straightening slots 123. When in use, The packaging bag containing food is placed in the protective shell 21, and the counterweight block 23 and the self-weight of the protective shell 21 are used to form a downward driving force. When the protective part 2 slides down along the straightening groove 123, the arc surface at the bottom first contacts the sleeve 1216 of the clamping part 2 13, and the component force in the tangential direction of the arc surface pushes the sleeve 1216 to overcome the elastic force of the spring 1 1214 and slide outward, driving the vacuum chamber to open, making way for the protective shell 21, and preventing the sleeve 1216 from directly squeezing the packaging bag and causing food to overflow.

[0046] Adopting the above solution: Through the inner cavity structure and the bottom arc surface design of the V-shaped protective shell 21, during the downward sliding process, through the passive expansion action of the sleeve 1216, it is avoided that the clamping member directly contacts the main body of the packaging bag, and the food in the bag is prevented from overflowing due to extrusion. The combined design of the through groove 22 and the counterweight 23 enables the protective member 2 to flexibly adjust the downward force according to the weight of the packaging bag, ensuring that packaging bags of different specifications maintain a stable speed during the vertical sliding process, avoiding the offset of the bag mouth due to too fast speed or affecting the packaging efficiency due to too slow speed. The sliding fit between the straightening plate 24 and the straightening groove 123, combined with the V-shaped symmetrical structure of the protective shell 21, reduces the lateral offset of the bag mouth during movement, providing an accurate physical positioning basis for the subsequent sealing of the vacuum chamber.

[0047] Referring to Figures 11 to 12 , the support member 3 includes a connection groove 31 penetratingly opened at the top end of the fixed column 11. There are four groups of connection grooves 31, symmetrically distributed at one end of the four groups of fixed columns 11. The cross-section of the connection groove 31 is convex-shaped. A set of insertion rods 32 are slidably inserted into each group of connection grooves 31. The cross-section of the insertion rod 32 is convex-shaped. One end of the insertion rod 32 is fixedly connected to a support plate 33. The cross-section of the support plate 33 is U-shaped. The four groups of insertion rods 32 are symmetrically distributed on both sides of the support plate 33. A disinfection lamp group 34 is fixedly arranged on the inner wall of the support plate 33. The disinfection lamp group 34 is composed of multiple groups of ultraviolet lamps. There are two groups of disinfection lamp groups 34, symmetrically distributed on both sides inside the support plate 33. A limiting groove 35 is opened at one end of each group of insertion rods 32. The limiting groove 35 is hemispherical. There are multiple groups of limiting grooves 35, evenly distributed at one end of the insertion rod 32. A cavity 36 is opened on the inner wall of the connection groove 31. There are three groups of cavities 36 in each group of connection grooves 31, and the intervals of the three groups of cavities 36 are the same as the intervals of the multiple groups of limiting grooves 35. The three groups of cavities 36 are located below the connection groove 31. One end of a second spring 37 is fixedly connected to the inner wall of each group of cavities 36. One end of the second spring 37 is fixedly connected to a limiting column 38, and the limiting column 38 is inserted into the cavity 36. The end face of the limiting column 38 is clamped with the limiting groove 35. The clamping end of the limiting column 38 and the limiting groove 35 is an arc surface. The elastic force of the second spring 37 is greater than that of the first spring 1214, so that the force that makes the protective member 2 move downward to push the sleeve 1216 to move and drive the first spring 1214 to stretch will not change the second spring 37, keeping the fixed column 11 and the support plate 33 in the current position all the time. When the support plate 33 is pulled downward, the limiting groove 35 at the end of the insertion rod 32 presses the arc surface of the limiting column 38, making it compress the second spring 37 and retract into the cavity 36 until the limiting groove 35 passes over the limiting column 38. The second spring 37 resets and pushes the limiting column 38 to be clamped into the next group of limiting grooves 35. During the encapsulation process, the two ultraviolet disinfection lamp groups 34 on the inner wall of the support plate 33 are synchronously turned on to irradiate and sterilize the surface of the packaging bag and the exposed food area.

[0048] Adopting the above solution: through the cooperation of the limiting groove 35 and the positioning groove 46, the support plate 33 can adapt to different height requirements from snack bags to large food bags. The adjustment process does not require tools and can be completed with one hand, which significantly improves the versatility of the equipment.

[0049] Reference Figures 13 to 16 The closing member 4 includes a spring three 41 fixedly connected to the bottom end of the installation box 1211 in the left clamping member 122 in the clamping member 2 13. The spring three 41 is provided with four groups, which are symmetrically distributed at the bottom ends of the four groups of installation boxes 1211 in the right clamping member 121 and the left clamping member 122 in the clamping member 2 13. The elastic force of the spring two 37 is greater than that of the spring three 41, so that when the spring three 41 is stretched due to external force, the spring two 37 does not change. The bottom end of the spring three 41 is fixedly connected to the closing box 42, and the bottom end of the closing box 42 is provided with an avoidance groove 43. The avoidance groove 43 is provided with two groups, which are symmetrically distributed at the bottom end of the closing box 42. The two groups of vertical A group of avoidance grooves 43 are respectively passed through the top of the straight plate, and a sliding groove 44 is provided on the inner wall of the closed box 42. There are two groups of sliding grooves 44, which are symmetrically distributed on both sides of the closed box 42. One end of the straightening plate 24 passes through the straightening groove 123 and is slidably plugged into the sliding groove 44. The inner wall of the closed box 42 is fixedly connected with a support plate 45. The support plate 45 is provided with four groups, which are symmetrically distributed on both sides of the two groups of straightening grooves 123. The cross-section of the support plate 45 is a right-angled trapezoid. The width of the two groups of support plates 45 symmetrically on both sides of the sliding groove 44 is the same as the maximum width of the V-shaped protective shell 21, and the inclined surface is facing upward. A positioning groove 46 is provided on the outside of the closed box 42, and the positioning groove 46 can be used to quickly The length of the insertion rod 32 pulled out from the connecting groove 31 is quickly determined, so that the distance from the bottom end of the inner side of the support plate 33 to the packaging machine body 14 is adapted to the length of the packaging bag. In the initial state, the spring three 41 is in a compressed state, so that the bottom end of the closing box 42 is in contact with the packaging machine body 14. The internal right-angled trapezoidal opening plate 45 opens the linkage block 1217 of the clamping member 12 horizontally through the straight edge to keep the sleeve 1216 open. When the protective member 2 is inserted into the straightening groove 123 and moves vertically downward, the side end straightening plate 24 is guided along the sliding groove 44 on the inner wall of the closing box 42. The arc surface of the bottom end pushes the sleeve 1216 to overcome the elastic force of the spring 1214 and move outward, thereby synchronously driving the vacuum chamber to open. As the protective shell 21 abuts against the bottom of the closing box 42 and continues to press down, the spring three 41 stretches, and the closing box 42 moves down accordingly. The inclined surface of the opening plate 45 gradually guides the sleeve 1216 to converge toward the center, straightening the bag opening. At this time, the closing box 42 forms a closed cavity that runs through the upper and lower parts through the avoidance groove 43 and the U-shaped vertical plate of the support plate 33, completely surrounding the disinfection lamp group 34 on the inner wall of the support plate 33. The ultraviolet rays are only reflected inside the cavity to avoid leakage. After the packaging is completed, the closing box 42 is manually pushed up, the spring three 41 resets and contracts, and the inclined surface at the top of the opening plate 45 opens the linkage block 1217 again, separating the sleeve 1216 to facilitate the removal of the protective part 2.

[0050] The above solution is adopted: through the U-shaped cooperation between the closing box 42 and the support plate 33, a physically enclosed space is constructed to completely isolate the ultraviolet disinfection area. At the same time, the inclined linkage design of the support plate 45 forms a flexible clamp during the bag opening straightening process to avoid damage to the bag opening caused by rigid contact. The positioning groove 46 cooperates with the insertion rod 32 to automatically maintain the relative position accuracy with the packaging machine body 14 when the closing box 42 is adjusted in height with the support plate 33, ensuring that the disinfection areas of packaging bags of different specifications are accurately aligned. The sliding groove 44 of the closing box 42 cooperates with the guide of the straightening plate 24, so that the insertion and removal of the protective part 2 can be completed with one hand.

[0051] The working principle of the present invention is as follows: When in use, first pull down the support plate 33, driving the insertion rod 32 to be withdrawn from the convex-shaped connection groove 31 at the top of the fixed column 11. During the withdrawal process, the hemispherical limiting groove 35 at the end of the insertion rod 32 abuts against the arc surface of the limiting column 38 in the inner cavity 36 of the inner wall of the connection groove 31, forcing the limiting column 38 to compress the second spring 37 and retract into the cavity 36 until the limiting groove 35 passes over the limiting column 38, and the second spring 37 resets to push the limiting column 38 to snap into the next set of limiting grooves 35. By observing the alignment position of the positioning groove 46 on the outer side of the closed box 42, the withdrawal length of the insertion rod 32 is adjusted to be adapted to the height of the packaging bag. At this time, the third spring 41 is in a compressed state, and the bottom end of the closed box 42 fits against the bottom end of the packaging machine main body 14. The straight edge of the right-angled trapezoidal spreading plate 45 inside it horizontally spreads the linkage block 1217 of the clamp in the first clamp 12, driving the sleeve 1216 to expand outwards. Then, the packaging bag containing food is placed into the protective shell 21 at the arc surface of the bottom end of the V-shaped cross-section. Appropriate weight blocks 23 are inserted into the through groove 22 according to the weight of the food in the bag to increase the downward force. Subsequently, the straightening plates 24 on both sides of the protective member 2 are aligned with the straightening grooves 123 of the clamp and inserted into the sliding grooves 44 of the closed box 42, so that the protective shell 21 vertically moves down along the direction of the sliding groove 44. Since the sleeve 1216 of the first clamp 12 is kept open by the spreading plate 45 in the initial state, when the arc surface at the bottom end of the protective shell 21 contacts the sleeve 1216 in the second clamp 13, it pushes the sleeve 1216 to slide outwards against the elastic force of the first spring 1214 by means of gravity, synchronously driving the first vacuum chamber 142 and the second vacuum chamber 144 to open with the connecting ear 141 and the connecting ear 143, so that the protective shell 21 can smoothly pass through the area of the packaging machine main body 14. When the protective shell 21 moves down to the position of the second clamp 13, the spreading plate 45 moves down synchronously with the closed box 42, and its inclined surface gradually guides the sleeve 1216 to move towards the center, forming a straightening effect on the bag mouth of the packaging bag to ensure that the bag mouth always remains in a vertical state. When the bottom end of the protective shell 21 abuts against the inner bottom end of the closed box 42, the top end of the protective shell 21 is flush with the bottom end of the spreading plate 45. The continuously moving-down protective shell 21 pushes the closed box 42 to move downwards by stretching the third spring 41, and the spreading plate 45 penetrates between the linkage blocks 1217 of the second clamp 13, keeping the sleeve 1216 in an open state and gradually closing along the inclined surface, continuously straightening the bag mouth until the bag mouth moves to the inside of the O-shaped convex block of the first vacuum chamber 142 and the second vacuum chamber 144. At this time, the vacuum pump extracts the air inside the packaging bag through the air nozzle in the heating block to form a pre-sealed state. At the same time, the heating block is powered on to heat up, and its O-shaped curved surface conducts the heat concentratedly to the bag mouth, melting the bag mouth. Under the action of the pressing block, the two layers of thin films are completely fused within the curved surface contour. Then, the heating block is powered off and enters the natural cooling stage until the bag mouth is solidified and formed. During the entire packaging process, multiple ultraviolet lamps in the disinfection lamp group 34 on the inner wall of the support plate 33 are synchronously turned on to disinfect the packaging bag and its contents. Since the closed box 42 and the support plate 33 form a U-shaped closed space, the ultraviolet rays are restricted within the closed area to avoid direct irradiation on the human body. After the packaging is completed,Manually push the closing box 42 upward, the spring three 41 contracts and resets, and the top inclined surface of the opening plate 45 opens the linkage block 1217 again, so that the sleeves 1216 are separated. When the opening plate 45 opens the two sets of sleeves 1216 in the clamping part 12, the protective shell 21 abuts against the bottom end of the inner part of the closing box 42, and the protective shell 21 is still within the range of the clamping part 2 13, so that the two sets of sleeves 1216 in the clamping part 2 13 are in the open state. At this time, the protective shell 21 and the sleeves 1216 in the clamping part 2 13 are both in the open state, and can be directly opened. Then take out the protective part 2 and the sealed packaging bag inside it to complete a packaging process; through the linkage design of the straightening part 1 and the protective part 2, the vertical positioning and flexible clamping of the bag opening are realized, which effectively reduces the leakage of liquid food soup. The sleeve 1216 of the straightening part 1 dynamically clamps the bag opening under the action of the spring 1214, and cooperates with the V-shaped arc structure of the protective part 2. When sliding down, the sleeve 1216 is passively opened to avoid squeezing the food. After resetting and clamping, the bag opening is ensured to be vertical, which reduces the leakage rate of soup, especially suitable for sauces, instant hot pots, etc. Liquid food, taking into account both overflow prevention and precise positioning, through the coordinated disinfection mechanism of the support member 3 and the closing member 4, a safe and efficient ultraviolet sterilization system is constructed. The U-shaped support plate 33 of the support member 3 is equipped with multiple groups of ultraviolet lamps, and with the height-adjustable insertion rod 32, it can achieve three-dimensional disinfection of packaging bags of different specifications. The closing box 42 of the closing member 4 and the support plate 33 form a closed cavity to avoid ultraviolet leakage, which not only ensures the killing effect of pathogens such as E. coli and mold, but also eliminates the risk of human exposure from the structure, meeting the hygienic requirements of food packaging. To meet the safety needs of consumers, packaging efficiency and operational convenience are significantly improved through full-process mechanical linkage and adaptive adjustment. The counterweight 23 and the straightening plate 24 of the protective element 2 achieve gravity-driven descent, eliminating the need for additional power. The opening plate 45 of the closure element 4 and the spring 41 work together to control the opening and closing of the sleeve 1216, automatically opening and closing the vacuum chamber and minimizing bag opening positioning errors. The coordination of the limit slot 35 and the positioning slot 46 allows for quick, one-handed adjustment of the support plate 33 height to accommodate packages of varying weights, significantly enhancing practicality in both home and small commercial applications.

[0052] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A vacuum food packaging machine for disinfection and sterilization, comprising: A straightening member (1) for keeping the bag opening in a vertical state, characterized in that a protective member (2) is provided on the straightening member (1) for preventing the packaging bag from being squeezed, a supporting member (3) is provided on the straightening member (1) for disinfecting the packaging bag, and a sealing member (4) is provided on the straightening member (1) for sealing the supporting member (3); The straightening member (1) comprises a fixing column (11), and a clamping member 1 (12) and a clamping member 2 (13) are provided on the fixing column (11); The clamping member 1 (12) includes a right clamping member (121) and a left clamping member (122), and a straightening groove (123) is provided between the right clamping member (121) and the left clamping member (122), and the protective member (2) is slidably plugged into the straightening groove (123); The right clamping member (121) includes an installation box (1211) fixedly connected to the inner side of the fixed column (11); a movable groove (1212) is provided through the side end of the installation box (1211); a movable plate (1213) is slidably connected in the movable groove (1212); a spring (1214) is fixedly connected between the movable plate (1213) and the inner wall of the movable groove (1212); one end of the movable plate (1213) is fixedly connected to a fixed rod (1215), and the movable plate (1213) passes through the movable groove (1212); the outer side of the fixed rod (1215) is rotatably connected to a sleeve (1216); the other end of the movable plate (1213) is fixedly connected to a linkage block (1217), and the linkage block (1217) passes through the movable groove (1212); When the protective member (2) is placed on the sleeve (1216), the protective member (2) moves downward due to gravity, thereby pushing the sleeve (1216) and the fixing rod (1215) outward, driving the spring 1 (1214) to extend, and after the protective member (2) moves downward and passes through the sleeve (1216), the spring 1 (1214) drives the sleeve (1216) to reset, clamps the packaging bag mouth that has not passed through, keeps the packaging bag in a vertical state, and moves the bag mouth into the packaging machine body (14).

2. A vacuum food packaging machine for disinfection and sterilization according to claim 1, characterized in that, The second clamping member (13) is arranged below the first clamping member (12), and the packaging machine body (14) is arranged on the second clamping member (13). The left clamping member (122) also includes a mounting box (1211), a movable groove (1212), a movable plate (1213), a spring (1214), a fixing rod (1215), a sleeve (1216) and a linkage block (1217), and the right clamping member (121) and the left clamping member (122) are distributed in a mirror-symmetrical manner on both sides of the straightening groove (123).

3. The vacuum food packaging machine for disinfection and sterilization according to claim 2, characterized in that, The second clamping member (13) also includes a right clamping member (121), a left clamping member (122) and a straightening groove (123).

4. A vacuum food packaging machine for disinfection and sterilization according to claim 3, characterized in that, The packaging machine body (14) includes a connecting ear (141) fixedly connected to a fixing rod (1215) in a left clamping member (122) of a second clamping member (13), and a vacuum chamber (142) is fixedly connected to the bottom end of the connecting ear (141). The packaging machine body (14) also includes a connecting ear (143) fixedly connected to a fixing rod (1215) in a right clamping member (121) of the second clamping member (13), and a vacuum chamber (144) is fixedly connected to the bottom end of the connecting ear (143).

5. A vacuum food packaging machine for disinfection and sterilization according to claim 4, characterized in that, The protective member (2) comprises a protective shell (21), a through slot (22) is provided through the side end of the protective shell (21), a counterweight (23) is inserted into the protective shell (21), a centralizing plate (24) is fixedly connected to the side end of the protective shell (21), and the centralizing plate (24) is slidably inserted into the centralizing slot (123).

6. A vacuum food packaging machine for disinfection and sterilization according to claim 5, characterized in that, The support member (3) includes a connecting groove (31) extending through the top of the fixed column (11), a plug rod (32) is slidably inserted into the connecting groove (31), one end of the plug rod (32) is fixedly connected to a support plate (33), and a disinfection lamp group (34) is fixedly provided on the inner wall of the support plate (33).

7. A vacuum food packaging machine for disinfection and sterilization according to claim 6, characterized in that, A limiting groove (35) is provided at one end of the insertion rod (32), a cavity (36) is provided on the inner wall of the connection groove (31), a second spring (37) is fixedly connected to the inner wall of the cavity (36), one end of the second spring (37) is fixedly connected to a limiting column (38), and the limiting column (38) is plugged into the cavity (36), and the end face of the limiting column (38) is clamped into the limiting groove (35).

8. A vacuum food packaging machine for disinfection and sterilization according to claim 7, characterized in that, The closing member (4) includes a spring three (41) fixedly connected to the bottom end of the installation box (1211) in the left clamping member (122) of the clamping member two (13), the bottom end of the spring three (41) is fixedly connected to the closing box (42), the bottom end of the closing box (42) is provided with an avoidance groove (43), and the top end of the support plate (33) passes through the avoidance groove (43).

9. A vacuum food packaging machine for disinfection and sterilization according to claim 8, characterized in that, The inner wall of the closing box (42) is provided with a sliding groove (44), one end of the straightening plate (24) passes through the straightening groove (123) and is slidably plugged into the sliding groove (44), the inner wall of the closing box (42) is fixedly connected with a support plate (45), and the support plate (45) is arranged on one side of the straightening groove (123), and the outer side of the closing box (42) is provided with a positioning groove (46).

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