Food packaging machine

Abstract

The invention relates to the technical field of packaging equipment, in particular to a food packaging machine which comprises a rack, a film feeding assembly, a bag making assembly and a heat sealing assembly, the film feeding assembly, the bag making assembly and the heat sealing assembly are arranged on the rack, a mounting plate is arranged on the rack, and a discharging assembly is arranged on the mounting plate. The discharging assembly comprises a discharging hopper fixed to the machine frame and a discharging pipe fixed to the discharging hopper, the discharging pipe is sleeved with a manufactured packaging bag, a sealing assembly is arranged on the machine frame, and the sealing assembly is used for making the packaging bag arranged on the discharging pipe in a sleeving mode abut against the outer wall of the discharging pipe. The sealing assembly comprises two mounting rods connected to the mounting plate in a sliding mode, a first sealing ring, a second sealing ring and a double-end air cylinder, wherein the first sealing ring and the second sealing ring are fixed to the mounting rods, and the double-end air cylinder is arranged on the mounting plate. The device has the effect of reducing dust materials adhering to the packaging bag.

Description

Technical Field

[0001] The present application relates to the technical field of packaging equipment, and in particular to a food packaging machine. Background Art

[0002] There are many types of packaging machines, and there are many ways to classify them. According to the product state, there are liquid, powder, and granule packaging machines; according to the packaging function, there are inner packaging machines and outer packaging machines; according to the packaging industry, there are packaging machines for food, daily chemicals, textiles, etc. The packaging of non-dairy creamer requires a powder packaging machine.

[0003] For example, the Chinese patent document with the announcement number CN221776184U discloses a powder quantitative packaging machine, including a packaging table, a support rod is arranged on one side of the upper surface of the packaging table, the support rod supports the silo, a rotating unloading mechanism is installed on the other side of the upper surface of the packaging table, the rotating unloading mechanism is located at the lower side of the silo, and a unloading part is installed on the other side of the packaging table, the unloading part is located at the lower side of the rotating unloading mechanism, and the unloading part includes a hopper installed on the packaging table, and the lower side of the hopper is connected to a unloading pipe. The first rotating rod rotates with the turntable, so that each powder barrel obtains a quantitative amount of powder in turn, and at the same time, the distribution barrel to be unloaded is moved to the upper side of the hopper for feeding through rotation, and then the powder material is packaged.

[0004] In the above-mentioned related technologies, although the powder materials can be packaged, the powder materials need to fall from the feeding tube into the packaging bag during packaging. Dust will be generated during the falling process of the powder, and then the generated dust will flow upward from the gap between the outer wall of the feeding tube and the inner side of the packaging bag. During the flow, the dust will be adsorbed on the surface of the packaging bag and the outer wall of the feeding tube, affecting the subsequent sealing of the packaging bag. In addition, the end of the discharge tube will also be stuck with raw materials. During the movement of the packaging bag, the material at the end of the discharge tube will also contact the packaging bag, thereby affecting the sealing effect. Summary of the invention

[0005] The present application provides a food packaging machine, aiming to solve the problem of poor sealing effect of packaging bags in the related art.

[0006] The food packaging machine provided in this application adopts the following technical solution: A food packaging machine comprises a frame, a film feeding assembly and a bag making assembly and a heat sealing assembly arranged on the frame, the frame is provided with a mounting plate, the mounting plate is provided with a feeding assembly, the feeding assembly comprises a feeding hopper fixed on the frame and a feeding tube fixed on the feeding hopper, the made packaging bag is sleeved on the feeding tube, the frame is provided with a sealing assembly, the sealing assembly is used to make the packaging bag sleeved on the feeding tube abut against the outer wall of the feeding tube, the sealing assembly comprises two mounting rods slidably connected to the mounting plate, a first sealing ring and a second sealing ring fixed on the mounting rods, and a double-headed cylinder arranged on the mounting plate, the two ends of the double-headed cylinder are respectively fixed on the two mounting rods, and drive the two mounting rods to move in opposite directions so that the packaging bag sleeved on the feeding tube abuts against the feeding tube.

[0007] By adopting the above technical solution, when unloading, the double-headed cylinder drives the first sealing ring and the second sealing ring to approach each other, so that the first sealing ring and the second sealing ring squeeze the packaging bag, and make the packaging bag abut against the surface of the fixed ring. At this time, the gap between the packaging bag and the fixed ring can be reduced. Then, on the one hand, the dust generated during falling can be reduced from flowing upward from the gap between the packaging bag and the fixed ring. On the other hand, the flowing dust can be reduced from sticking to the packaging bag, thereby making the sealing effect of the packaging bag better.

[0008] Optionally, a fixing ring is installed on the discharge tube, a mounting groove is provided on the fixing ring, a material guide assembly is arranged in the mounting groove, the material guide assembly includes a first mounting ring, a second mounting ring and an elastic material guide plate slidably connected to the inner wall of the mounting groove, the elastic material guide plate includes a first inclined portion and a second inclined portion, one end of the first inclined portion is fixed to the first mounting ring, and the other end is fixedly connected to the second inclined portion, and a control assembly for driving the first mounting ring and the second mounting ring and the elastic material guide plate to move into the mounting groove and a pulling assembly for driving the elastic material guide plate to fold are arranged in the mounting groove.

[0009] By adopting the above technical solution, after the material in the packaging bag finishes falling, a small amount of material will stick to the second inclined portion and the first inclined portion. When the packaging bag needs to move downward, the control component drives the elastic material guide plate to move into the installation groove, and then the material stuck to the surface of the material guide plate may not contact the packaging bag, thereby reducing the amount of material sticking to the packaging bag and improving the sealing effect of the packaging bag.

[0010] Optionally, the pulling assembly includes a movable ring slidably connected in the mounting groove and a pulling ring fixed on the movable ring, one end of the pulling ring away from the movable ring is fixed at the connection between the first inclined portion and the second inclined portion, and a pulling spring is arranged in the mounting groove, one end of the pulling spring is fixed on the inner wall of the mounting groove, and the other end is fixed on the movable ring.

[0011] By adopting the above technical solution, when the control component makes the elastic material guide plate in the installation groove, the moving ring drives the pulling ring to move, and the elastic material guide plate is folded during the movement, thereby achieving the purpose of cleaning the surface of the elastic material guide plate.

[0012] Optionally, the control assembly includes a plurality of connecting rods fixed on a movable ring, a connecting ring fixed on a second inclined portion, a control rod slidably connected to the connecting ring, and a control spring sleeved on the control rod, one end of the control spring is fixed on the connecting ring, and the other end is fixed on the control rod, and the connecting rod is provided with a first locking groove for plugging the control rod.

[0013] By adopting the above technical solution, when one end of the control rod is inserted into the first locking groove, the movement of the movable ring can drive the connecting ring and the elastic material guide plate to move simultaneously, thereby facilitating the elastic material guide plate to move into the installation groove.

[0014] Optionally, a guide groove is formed on the inner wall of the installation groove for pushing the control rod to move away from the connecting rod, and a guide surface is formed on the inner wall of the guide groove. The guide surface gradually inclines from the direction away from the discharge pipe toward the direction close to the connecting rod, and the control spring pushes the control rod to abut against the guide surface. A second locking groove is formed on the inner wall of the installation groove for clamping the control rod. When the control rod is in the second locking groove, the connecting rod and the connecting ring are disengaged.

[0015] By adopting the above technical scheme, when the elastic material guide plate extends out of the installation groove, the control rod is in the first locking groove, and the moving ring can drive the connecting ring to move at the same time when it moves. During the movement, since the guide surface gradually tilts from the direction away from the discharge pipe to the direction close to the connecting rod, the control spring causes the control rod to disengage from the first locking groove, and pulls the control rod into the second locking groove. At the same time, the control rod disengages from the first locking groove. At this time, the position of the connecting ring is fixed, and then the moving ring continues to move, which will pull the V-shaped elastic material guide plate to fold. At this time, the connecting rod and the connecting ring are separated, so as to achieve the purpose of driving the elastic material guide plate to fold.

[0016] Optionally, the fixed ring includes an inner ring and an outer ring, the inner ring is provided with an inflation cavity, and a mounting opening is provided on a side of the inflation cavity close to the elastic material guide plate, an elastic sheet is arranged in the mounting opening, both ends of the elastic sheet are fixed on the inner wall of the mounting opening, and an inflation component for inflating the inflation cavity is arranged on the frame.

[0017] By adopting the above technical solution, the inflation component inflates the inflation cavity, and the gas will push the elastic sheet to deform in the direction close to the outer ring. At this time, the expanded elastic sheet can be placed under the elastic material guide plate, and then after the elastic material guide plate is folded, the material can fall onto the expanded elastic sheet, reducing the amount of fallen material sticking to the packaging bag.

[0018] Optionally, a pushing chamber is formed between the movable ring and the top wall of the mounting groove, and the pushing chamber is connected to the inflation assembly.

[0019] By adopting the above technical solution, when the inflation component inflates the pushing chamber, the gas can push the movable plate to move in the installation groove, which will then drive the folded elastic material guide plate to reset, and then facilitate the subsequent elastic material guide plate to move out of the installation groove, thereby achieving the function of guiding materials.

[0020] Optionally, the inflation component includes a first inflation tube and a second inflation tube and an inflation pump for connecting the first inflation tube and the second inflation tube, wherein one end of the first inflation tube away from the inflation pump is connected to the inflation cavity, and one end of the second inflation tube away from the inflation pump is connected to the pushing chamber.

[0021] By adopting the above technical solution, when the air pump inflates the pushing chamber through the second inflation tube, the gas in the inflation cavity is discharged, and the elastic sheet is in a contracted state. At this time, the gas in the pushing chamber will push the movable ring to move away from the discharge tube, so that the pulling spring is in a stretched state, and finally the elastic material guide plate extends out of the installation slot, playing a role of guiding the material when the packaging bag is discharged.

[0022] Optionally, the inner ring height of the fixing ring is greater than the outer ring height.

[0023] By adopting the above technical solution, the expansion size of the elastic sheet can be changed by adjusting the amount of inflation, so that the expanded elastic sheet can be abutted against the packaging film, the packaging bag can be stretched open, the distance between the packaging bag and the fixed ring and the elastic material guide plate can be increased, and the material sticking to the packaging bag can be further reduced.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. When unloading, the double-headed cylinder drives the first sealing ring and the second sealing ring to approach each other, so that the first sealing ring and the second sealing ring squeeze the packaging bag, and make the packaging bag abut against the surface of the fixed ring. At this time, the gap between the packaging bag and the fixed ring can be reduced. Then, on the one hand, it can reduce the dust generated during falling from the gap between the packaging bag and the fixed ring to flow upward, and on the other hand, it can reduce the flowing dust sticking to the packaging bag, so that the sealing effect of the packaging bag is better.

[0025] 2. When the packaging bag needs to move downward, the control component drives the elastic guide plate to move into the installation groove, and then the material stuck on the surface of the guide plate can avoid contact with the packaging bag, thereby reducing the material sticking to the packaging bag and improving the sealing effect of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the sealing assembly structure of an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the feed tube and the fixing ring of an embodiment of the present application.

[0029] Figure 4 It is a cross-sectional view of a fixing ring according to an embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the structure of the pulling component and the control component of an embodiment of the present application.

[0031] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0032] Figure 7 yes Figure 4 Enlarged view of point A in the middle.

[0033] Reference numerals: 01, frame; 02, film feeding assembly; 04, heat sealing assembly; 05, mounting plate; 1, material discharge assembly; 11, material discharge hopper; 12, material discharge pipe; 13, fixing ring; 131, inner ring; 132, outer ring; 14, mounting groove; 2, sealing assembly; 21, mounting rod; 22, first sealing ring; 23, second sealing ring; 24, double-headed cylinder; 3, material guide assembly; 31, first mounting ring; 32, second mounting ring; 33, elastic material guide plate; 331, first inclined portion; 332 , the second inclined portion; 4, control assembly; 41, connecting rod; 42, connecting ring; 43, control rod; 44, control spring; 5, pulling assembly; 51, moving ring; 52, pulling ring; 53, pulling spring; 6, inflation assembly; 61, first inflation tube; 62, second inflation tube; 7, inflation cavity; 71, installation port; 72, elastic sheet; 73, pushing chamber; 8, guide groove; 81, guide surface; 82, first locking groove; 83, plug-in groove; 84, second locking groove; 10, sealing block. DETAILED DESCRIPTION

[0034] The following combination Figure 1-Figure 7 This application is described in further detail.

[0035] The present application embodiment discloses a food packaging machine. Figure 1 and Figure 2A food packaging machine includes a frame 01, a feeding component 1 arranged on the frame 01, a film feeding component 02, a bag making component and a heat sealing component 04, the bag making component is used to make packaging bags from packaging film, the heat sealing component 04 is used to seal both ends of the packaging bag, the film feeding component 02 is used to feed the packaging film to the feeding component 1, and then the feeding component 1 transports the powdered material into the packaging bag, and finally heat seals and cuts it to achieve powder packaging; since the film feeding component 02, the bag making component and the heat sealing component 04 belong to the prior art, in this embodiment, the structure and working principle of the film feeding component 02, the bag making component and the heat sealing component 04 are no longer described in detail.

[0036] Reference Figures 1 to 4 The material discharging assembly 1 includes a discharging hopper 11 fixed on the frame 01 and a discharging pipe 12 installed on the discharging hopper 11. The manufactured packaging bag is sleeved on the discharging pipe 12. Then the material in the discharging hopper 11 enters the packaging bag through the discharging pipe 12, and finally is heat-sealed by the heat-sealing assembly 04. A fixing ring 13 is fixedly installed at the end of the discharging pipe 12 by bolts. A material guiding assembly 3 is arranged on the fixing ring 13. The material guiding assembly 3 is used to guide the falling material to the middle, and also reduce the contact between the material at the end of the discharging pipe 12 and the packaging bag. A mounting groove 14 is provided on the fixing ring 13. The fixing ring 13 includes an inner ring 131 and an outer ring 132. The inner ring 131 and the outer ring 132 are arranged at intervals, and the mounting groove 14 is between the inner ring 131 and the outer ring 132. In this embodiment, the height of the inner ring 131 of the fixing ring 13 is greater than the height of the outer ring 132, and the material guiding assembly 3 is in the mounting groove 14.

[0037] Reference Figures 1 to 3 A mounting plate 05 is provided on the frame 01, and a sealing assembly 2 is provided on the mounting plate 05 for making the packaging bag sleeved on the feeding tube 12 abut against the outer wall of the feeding tube 12; the sealing assembly 2 includes two mounting rods 21 slidably connected to the mounting plate 05, a first sealing ring 22 and a second sealing ring 23 fixed on the mounting rods 21, the first sealing ring 22 and the second sealing ring 23 are respectively fixedly connected to the two mounting rods 21, and a double-headed cylinder 24 is fixedly installed on the mounting plate 05, and the double-headed cylinder 24 has two piston rods, and the two piston rods are fixedly connected to the two mounting rods 21, through the double-headed cylinder 24. The operation of the cylinder 24 can drive the first sealing ring 22 and the second sealing ring 23 to move in opposite directions. When unloading, the double-headed cylinder 24 drives the first sealing ring 22 and the second sealing ring 23 to approach each other, so that the first sealing ring 22 and the second sealing ring 23 squeeze the packaging bag, and make the packaging bag abut against the surface of the fixed ring 13. At this time, the gap between the packaging bag and the fixed ring 13 can be reduced. Then, on the one hand, it can reduce the dust generated during falling from the gap between the packaging bag and the fixed ring 13 to flow upward, and on the other hand, it can reduce the flowing dust sticking to the sealing part of the packaging bag, thereby making the sealing effect of the packaging bag better.

[0038] Reference Figures 2 to 7 The material guide assembly 3 includes a first mounting ring 31, a second mounting ring 32 and an elastic material guide plate 33 which are slidably connected to the inner wall of the mounting groove 14. The material of the elastic material guide plate 33 is set to be rubber and can undergo a certain deformation; the elastic material guide plate 33 includes a first inclined portion 331 and a second inclined portion 332. One end of the first inclined portion 331 is fixed to the first mounting ring 31, and the other end is fixedly connected to the second inclined portion 332. In this embodiment, the first inclined portion 331 is inclined in a direction close to the inner ring 131, and the second inclined portion 332 is inclined in a direction close to the outer ring 132. When the first inclined portion 331 and the second inclined portion 332 extend out of the mounting groove 14, the first inclined portion 331 and the second inclined portion 332 are in a V-shaped structure, and the second inclined portion 332 is away from the mounting groove 14. One end of the first inclined portion 331 is fixed on the second mounting ring 32, the first mounting ring 31 is slidably connected to the inner wall of the outer ring 132, and the second mounting ring 32 is slidably connected to the inner ring 131. At the same time, a control component 4 is provided in the mounting groove 14 for driving the first mounting ring 31, the second mounting ring 32 and the elastic guide plate 33 to move into the mounting groove 14. After the material in the packaging bag falls, a small amount of material will stick to the second inclined portion 332 and the first inclined portion 331; when the packaging bag needs to move downward, the control component 4 drives the elastic guide plate 33 to move into the mounting groove 14, and then the material sticking to the surface of the elastic guide plate 33 can not contact the packaging bag, thereby reducing the material sticking to the packaging bag, and then improving the sealing effect of the packaging bag. In addition, when unloading, since the first inclined portion 331 is inclined in the direction close to the inner ring 131, the distance between the first inclined portion 331 and the packaging bag can be increased at this time, reducing the material sticking to the packaging bag, and then making the sealing effect of the packaging bag better.

[0039] Reference Figures 2 to 7 A pulling assembly 5 is arranged in the installation groove 14, and the pulling assembly 5 is used to fold the elastic material guide plate 33 moved into the installation groove 14, so that the folded elastic material guide plate 33 has an inverted V-shaped structure, and then it is convenient to clean the material on the surface of the second inclined portion 332; an inflatable cavity 7 is opened on the inner ring 131, and an installation opening 71 is opened on the side of the inflatable cavity 7 close to the elastic material guide plate 33, and an elastic sheet 72 is arranged in the installation opening 71. The material of the elastic sheet 72 is set to elastic rubber, and both ends of the elastic sheet 72 are fixed On the inner wall of the mounting opening 71; at the same time, an inflation component 6 for inflating the inflation cavity 7 is arranged on the frame 01, and when the elastic guide plate 33 moves into the mounting groove 14, the inflation component 6 inflates the inflation cavity 7, and at this time, the gas will push the elastic sheet 72 to deform in the direction close to the outer ring 132, so that the expanded elastic sheet 72 can be located below the elastic guide plate 33, and then after the elastic guide plate 33 is folded, the material can fall onto the expanded elastic sheet 72, thereby reducing the amount of fallen material sticking to the packaging bag.

[0040] Since the height of the inner ring 131 is greater than that of the outer ring 132, the expansion size of the elastic sheet 72 can be changed by adjusting the amount of inflation, so that the expanded elastic sheet 72 abuts against the packaging film, thereby stretching the packaging bag, increasing the distance between the packaging bag and the fixed ring 13 and the elastic guide plate 33, and further reducing the material sticking to the packaging bag.

[0041] Reference Figures 2 to 7 The pulling assembly 5 includes a moving ring 51 slidably connected in the mounting groove 14 and a pulling ring 52 fixed on the moving ring 51. One end of the pulling ring 52 away from the moving ring 51 is fixed at the connection between the first inclined portion 331 and the second inclined portion 332. At the same time, a pulling spring 53 is arranged in the mounting groove 14. One end of the pulling spring 53 is fixed on the inner wall of the mounting groove 14, and the other end is fixed on the moving ring 51. When the elastic material guide plate 33 is outside the mounting groove 14, the pulling spring 53 is in a stretched state. In this embodiment, a pushing chamber 73 is formed between the moving ring 51 and the top wall of the mounting groove 14. The pushing chamber 73 is connected to the inflatable assembly 6. When the inflatable assembly 6 inflates the pushing chamber 73, the gas can push the moving ring 51 to move in the mounting groove 14. At this time, the folded elastic material guide plate 33 will be reset, and then it is convenient for the subsequent elastic material guide plate 33 to move out of the mounting groove 14 to achieve the function of guiding.

[0042] Reference Figures 2 to 7 The control assembly 4 includes a plurality of connecting rods 41 fixed on the movable ring 51, a connecting ring 42 fixed on the second inclined portion 332, a control rod 43 slidably connected to the connecting ring 42, and a control spring 44 sleeved on the control rod 43, one end of the control spring 44 is fixed on the connecting ring 42, and the other end is fixed on the control rod 43, and the plurality of connecting rods 41 are evenly spaced along the direction of the fixed ring 13.

[0043] Reference Figures 2 to 7A guide groove 8 is provided on the inner wall of the mounting groove 14 for pushing the control rod 43 to move away from the connecting rod 41. A plurality of guide grooves 8 are provided, and the plurality of guide grooves 8 are arranged at intervals along the circumference of the fixing ring 13. The number of the guide grooves 8 is the same as the number of the control rod 43 and the control spring 44. At the same time, a first locking groove 82 for plugging the control rod 43 is provided on the connecting rod 41, and a plug-in groove 83 for plugging the connecting rod 41 is provided on the connecting ring 42. The plug-in groove 83 is provided in the vertical direction and does not pass through the connecting ring 42. In addition, a second locking groove 84 for clamping the control rod 43 is provided on the inner wall of the mounting groove 14. A guide surface 81 is provided on the inner wall of the guide groove 8. The guide surface 81 gradually tilts from the direction away from the feeding tube 12 to the direction close to the connecting rod 41. Under the action of the control spring 44, the control rod 43 is pushed to abut against the guide surface 81. In this embodiment, an abutment ball is provided at one end of the control rod 43 close to the guide surface 81, so that the control rod 43 can be easily separated from the second locking groove 84. In addition, an elastic sealing block 10 is fixedly mounted on the moving ring 51. The elastic sealing block 10 abuts against the inner wall of the guide groove 8. When moving away from the feeding tube 12, the elastic sealing block 10 is gradually compressed. When moving in the reverse direction, the elastic sealing block 10 is reset, so that the pushing chamber 73 is always kept in a closed state.

[0044] When the elastic material guide plate 33 is in the installation groove 14, the control spring 44 pulls the control rod 43 into the second locking groove 84, and at the same time the control rod 43 disengages from the first locking groove 82. At this time, the position of the connecting ring 42 is fixed, and then the moving ring 51 continues to move and pulls the V-shaped elastic material guide plate 33 to fold. At this time, the connecting rod 41 and the connecting ring 42 are separated, so as to facilitate the folding of the elastic material guide plate 33. When the elastic material guide plate 33 needs to be moved out of the installation groove 14, the inflation component 6 pushes the movable ring 51 and the elastic material guide plate 33 to move away from the discharge tube 12, so that the folded elastic material guide plate 33 is reset, and then the connecting rod 41 moves into the plug-in groove 83 and abuts against the bottom wall of the plug-in groove 83. During the movement of the movable ring 51, the connecting rod 41 pushes the connecting ring 42 to move, so that the control rod 43 disengages from the second locking groove 84. During the movement of the connecting ring 42 and the movable ring 51, the elastic material guide plate 33 is moved out of the installation groove 14, so as to facilitate the material guiding function during subsequent packaging.

[0045] Reference Figures 2 to 7 During the simultaneous movement of the connecting ring 42 and the movable ring 51, the guide surface 81 will push the control rod 43 to move toward the connecting rod 41, and finally move into the first locking groove 82, and the control rod 43 will disengage from the second locking groove 84. At this time, the connecting ring 42 and the movable ring 51 are fixed together. When the movable ring 51 moves in the opposite direction, it can drive the connecting ring 42 to move at the same time, and then it is convenient to drive the V-shaped elastic guide plate 33 to move into the installation groove 14.

[0046] Reference Figures 2 to 7 The inflation component 6 includes a first inflation tube 61, a second inflation tube 62, and an inflation pump (not shown in the figure) connected to the first inflation tube 61 and the second inflation tube 62. The end of the first inflation tube 61 away from the inflation pump is communicated with the inflation cavity 7, and the end of the second inflation tube 62 away from the inflation pump is communicated with the push chamber 73. When the inflation pump inflates the push chamber 73 through the second inflation tube 62, the gas in the inflation cavity 7 is discharged, and the elastic sheet 72 is in a contracted state. At this time, the gas in the push chamber 73 will push the moving ring 51 to move in a direction away from the feeding tube 12, so that the pulling spring 53 is in a stretched state, and finally the elastic guide plate 33 extends out of the mounting groove 14, and the packaging bag is lowered. When the material is being fed to the packaging bag, it plays the role of guiding the material; when the packaging bag is unloaded, the gas in the pushing chamber 73 is discharged, and then the movable ring 51 and the connecting ring 42 are driven to move in opposite directions at the same time under the action of the pulling spring 53, so that the connecting ring 42 drives the elastic material guide plate 33 to move into the mounting groove 14, and when the connecting rod 41 and the connecting ring 42 are separated, gas is introduced into the inflation cavity 7 through the first inflation tube 61, so that the elastic sheet 72 expands in the direction close to the outer ring 132, and finally the expanded elastic sheet 72 is located below the mounting groove 14, the opening of the mounting groove 14 is blocked, and when the elastic material guide plate 33 is folded, the fallen material can fall on the elastic sheet 72, thereby reducing the material from floating onto the packaging bag.

[0047] The implementation principle of a food packaging machine in an embodiment of the present application is as follows: in the initial state, the chamber 73 is pushed to be filled with gas, the moving ring 51 and the connecting ring 42 make the elastic guide plate 33 extend out of the mounting groove 14, and the elastic guide plate 33 is in a V-shape, the gas in the inflation cavity 7 is discharged, and the elastic sheet 72 is in a contracted state, and then the first sealing ring 22 and the second sealing ring 23 make the packaging bag sleeved on the fixed ring 13 abut against the surface of the fixed ring 13, and then the material in the discharge hopper 11 enters the packaging bag through the discharge pipe 12. When the material in the packaging bag is finished falling, the gas in the chamber 73 is pushed to be discharged, and the pulling spring 53 pulls the moving ring 51, the connecting ring 42 and the elastic guide plate 33 to move into the mounting groove 14, and the first sealing ring 22 and the second sealing ring 23 are away from each other. When the packaging bag moves downward, the inflation cavity 7 is inflated to expand the elastic sheet 72, and the expanded elastic sheet 72 abuts on the packaging bag, and at the same time, the opening of the mounting groove 14 is blocked, so that the purpose of reducing the material sticking to the packaging bag can be finally achieved.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A food packaging machine, comprising a frame (01), a film feeding assembly (02) and a bag making assembly and a heat sealing assembly (04) arranged on the frame (01), characterized in that: The frame (01) is provided with a mounting plate (05), the mounting plate (05) is provided with a material discharge assembly (1), the material discharge assembly (1) comprises a material discharge hopper (11) fixed on the frame (01) and a material discharge pipe (12) fixed on the material discharge hopper (11), the manufactured packaging bag is sleeved on the material discharge pipe (12), the frame (01) is provided with a sealing assembly (2), the sealing assembly (2) is used to make the packaging bag sleeved on the material discharge pipe (12) abut against the outer surface of the material discharge pipe (12) The sealing assembly (2) comprises two mounting rods (21) slidably connected to the mounting plate (05), a first sealing ring (22) and a second sealing ring (23) fixed to the mounting rods (21), and a double-headed cylinder (24) arranged on the mounting plate (05), wherein both ends of the double-headed cylinder (24) are respectively fixed to the two mounting rods (21) and drive the two mounting rods (21) to move in opposite directions, so that the packaging bag sleeved on the discharge pipe (12) abuts against the discharge pipe (12).

2. A food packaging machine according to claim 1, characterized in that: A fixing ring (13) is mounted on the feed tube (12), a mounting groove (14) is formed on the fixing ring (13), a material guide assembly (3) is arranged in the mounting groove (14), the material guide assembly (3) comprises a first mounting ring (31), a second mounting ring (32) and an elastic material guide plate (33) which are slidably connected to the inner wall of the mounting groove (14), the elastic material guide plate (33) comprises a first inclined portion (331) and a second inclined portion (332), one end of the first inclined portion (331) is fixed to the first mounting ring (31), and the other end is fixedly connected to the second inclined portion (332), and a control assembly (4) for driving the first mounting ring (31), the second mounting ring (32) and the elastic material guide plate (33) to move into the mounting groove (14) and a pulling assembly (5) for driving the elastic material guide plate (33) to fold are arranged in the mounting groove (14).

3. A food packaging machine according to claim 2, characterized in that: The pulling assembly (5) comprises a moving ring (51) slidably connected in the mounting groove (14) and a pulling ring (52) fixed on the moving ring (51); one end of the pulling ring (52) away from the moving ring (51) is fixed at the connection between the first inclined portion (331) and the second inclined portion (332); a pulling spring (53) is arranged in the mounting groove (14); one end of the pulling spring (53) is fixed to the inner wall of the mounting groove (14), and the other end is fixed to the moving ring (51).

4. A food packaging machine according to claim 3, characterized in that: The control assembly (4) comprises a plurality of connecting rods (41) fixed on a movable ring (51), a connecting ring (42) fixed on a second inclined portion (332), a control rod (43) slidably connected to the connecting ring (42), and a control spring (44) sleeved on the control rod (43), one end of the control spring (44) being fixed on the connecting ring (42) and the other end being fixed on the control rod (43), and a first locking groove (82) for inserting the control rod (43) being provided on the connecting rod (41).

5. A food packaging machine according to claim 4, characterized in that: The inner wall of the installation groove (14) is provided with a guide groove (8) for pushing the control rod (43) to move in a direction away from the connecting rod (41); the inner wall of the guide groove (8) is provided with a guide surface (81); the guide surface (81) gradually tilts in a direction away from the discharge pipe (12) toward a direction close to the connecting rod (41); the control spring (44) pushes the control rod (43) to abut against the guide surface (81); the inner wall of the installation groove (14) is provided with a second locking groove (84) for clamping the control rod (43); when the control rod (43) is in the second locking groove (84), the connecting rod (41) and the connecting ring (42) are disengaged.

6. A food packaging machine according to claim 3, characterized in that: The fixing ring (13) comprises an inner ring (131) and an outer ring (132); an inflatable cavity (7) is provided on the inner ring (131); and a mounting opening (71) is provided on a side of the inflatable cavity (7) close to the elastic material guide plate (33); an elastic sheet (72) is provided in the mounting opening (71); both ends of the elastic sheet (72) are fixed to the inner wall of the mounting opening (71); and an inflatable component (6) for inflating the inflatable cavity (7) is provided on the frame (01).

7. A food packaging machine according to claim 6, characterized in that: A pushing chamber (73) is formed between the moving ring (51) and the top wall of the mounting groove (14), and the pushing chamber (73) is connected to the inflation component (6).

8. A food packaging machine according to claim 7, characterized in that: The inflation assembly (6) comprises a first inflation tube (61) and a second inflation tube (62) and a device for connecting the first inflation tube (61) and the second inflation tube (62) to an inflation pump, wherein an end of the first inflation tube (61) away from the inflation pump is in communication with the inflation cavity (7), and an end of the second inflation tube (62) away from the inflation pump is in communication with the push chamber (73).

9. A food packaging machine according to claim 7, characterized in that: The height of the inner ring (131) of the fixing ring (13) is greater than the height of the outer ring (132).

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