Packaging device for oil-immersed food and using method of packaging device

Abstract

The invention provides a packaging device for oil-immersed food and a using method of the packaging device, relates to a food packaging technology, and particularly discloses a machine shell, a charging barrel and a machine frame. The machine frame is installed in the machine shell, the charging barrel is installed at the top of the machine frame, and two second driving rollers are installed at the top of the machine frame and located on the two sides of the charging barrel correspondingly; each second driving roller is provided with a coiled material belt; a bag making mechanism opposite to an output port of the charging barrel is mounted in the middle of the rack; a guide structure matched with the two material belts is arranged in the bag making mechanism; an edge sealing mechanism for sealing the two sides of the two material belts is arranged in the guide structure; a position adjusting structure enabling the upper ends of the two material belts to form an inlet and outlet is arranged in the guiding structure. The bottom of the bag making mechanism is provided with a traction mechanism used for pulling a material belt to move downwards in the vertical direction. The use of a material belt is accurately controlled through the bag making mechanism, so that the waste of materials is reduced; the position adjusting structure enables the charging barrel conveying pipeline not to make direct contact with the inner wall of the packaging bag, and the risk of cross contamination is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging, and in particular to a packaging device for oil-immersed food and a use method thereof. Background Art

[0002] In the prior art, for the packaging of oil-soaked food, the packaging structure includes a feeding funnel, a hot pressing wheel, a box body and a feeding rack installed inside the box body. A sliding groove is installed near the outlet on the inner side of the feeding funnel, and a gate is provided in the sliding groove. A feeding control device is installed below the feeding funnel. A hot pressing wheel and an auxiliary pressing wheel are provided inside the box body just below the feeding funnel. Two sets of driving motors are fixedly installed on the outer side of the box body, and the output shafts of the driving motors are connected to the hot pressing wheel and the auxiliary pressing wheel respectively. There are two feeding racks, which are respectively located on both sides of the hot pressing wheel and the auxiliary pressing wheel. The hot pressing wheel and the auxiliary pressing wheel are provided with packaging bags respectively. When the above packaging bags are pressed into bags, a material belt is usually pressed together by the hot pressing wheel and the auxiliary pressing wheel to form a cylindrical shape. During the above operation, the inner wall of the material belt is always in contact with the conveying pipe of the feeding control device, so that the inner wall of the cylindrical packaging bag is contaminated for a long time, which seriously affects the cleanliness of the packaging bag. In addition, during the material conveying process of the above structure, the material will remain at the to-be-packaged position of the bag opening. After hot-press packaging, the material will exist in the pressing area, resulting in poor sealing of the packaging and even leakage of the material. Summary of the invention

[0003] The object of the present invention is to provide a packaging device for oil-immersed food and a method of using the same. In view of the shortcomings of the prior art, the present invention can solve the problem that the inner wall of the material belt is always in contact with the conveying pipe of the material discharge control device, causing the inner wall of the cylindrical packaging bag to be contaminated for a long time, seriously affecting the cleanliness of the packaging bag; and during the material conveying process of the above-mentioned structure, the material will remain in the packaging position at the bag opening, and after hot-pressing packaging, the material will exist in the pressing area, resulting in poor sealing of the packaging and even causing material leakage.

[0004] The technical solution of the present invention is achieved in this way: The invention provides a packaging device for oil-immersed food, comprising a housing, a barrel, and a frame; the frame is installed in the housing, the barrel is installed on the top of the frame, two second driving rollers are installed on the top of the frame, and the two second driving rollers are located on both sides of the barrel; the second driving rollers are each installed with a rolled material belt; a bag making mechanism opposite to the output port of the barrel is installed in the middle of the frame; A guide structure adapted to the two material strips is provided in the bag making mechanism; an edge sealing mechanism for sealing the two sides of the two material strips is provided in the guide structure; The guide structure is provided with a positioning structure for forming an inlet and outlet at the upper ends of the two material strips; A traction mechanism for pulling the material belt to move downward in a vertical direction is provided at the bottom of the bag making mechanism.

[0005] In some technical solutions of the present invention, the guide structure includes two guide seats slidably arranged in the frame; The two guide seats are provided with guide grooves on their opposite side walls. The two guide grooves form a feeding channel for the movement of two material belts in the frame. The edge sealing mechanism is installed in the feeding channel. A limit frame is fixed on both sides of the frame, and a plurality of guide rods are passed through the two side walls opposite to the guide seat. The guide rods are connected to the guide seat on the same side, and a third spring connected to the limit frame is sleeved on the guide rods.

[0006] In some technical schemes of the present invention, the edge sealing mechanism includes multiple groups of edge sealing structures, which are respectively installed in two guide grooves; the edge sealing structure includes two mounting rods arranged in pairs, and the two mounting rods are respectively penetrated on two opposite side walls of the guide groove, and the mounting rods are each sleeved with a first spring connected to the guide seat, and a first mounting frame is installed at the end of the mounting rod placed in the guide groove, and a heat sealing wheel is rotatably provided in the first mounting frame, and the wheel surfaces of the two heat sealing wheels abut against each other.

[0007] In some technical solutions of the present invention, two groups of guiding mechanisms are also included. The two guiding mechanisms are respectively installed on both sides of the frame with the guiding structure as the symmetry axis. The number of positioning structures is several groups, and the multiple groups of positioning structures are arranged around the outer wall of the guiding mechanism.

[0008] In some technical solutions of the present invention, the guiding mechanism includes two guiding frames respectively installed on the same side of the frame, a transmission belt connected end to end is provided in the guiding frame, and a transmission wheel is installed on the guiding frame, and the transmission wheel is engaged with the transmission belt.

[0009] In some technical schemes of the present invention, the positioning structure includes two guide plates slidably arranged in the limit frame, a plurality of mounting plates are installed between the two guide plates, hinges are provided between any two adjacent mounting plates, suction cups are installed on the side walls opposite to the mounting plates and the material belts, conduits are installed in the mounting plates, and any two adjacent conduits are connected to each other; an air pipe is installed in the limit frame, a first push rod connected to the air pipe is installed on the inner side wall of the limit frame, and the air pipe and the conduit are connected through a quick-release structure.

[0010] In some technical schemes of the present invention, the traction mechanism includes a guide seat installed in a frame, multiple groups of guide structures are installed in the guide seat, the guide structure includes two second mounting frames arranged in pairs, guide wheels are rotatably provided on the side walls of the second mounting frames, a drive motor transmission-connected to the guide wheels is installed on the second mounting frames, and a second spring connected to the guide seat is installed on the side walls of the second mounting frames.

[0011] In some technical solutions of the present invention, a peeling mechanism for peeling off the protective film attached to the material tape is also provided in the frame.

[0012] In some technical solutions of the present invention, the stripping mechanism includes two limiting structures installed in the feeding channel, the limiting structures are sleeved with a mounting seat connected to the guide seat, the ends of the guide plates are both installed with limiting seats, and the ends of the limiting structures are slidably arranged in the limiting seats; The limiting structure comprises a plurality of rod sections which are spliced ​​in sequence, and a hinge structure is installed between any two adjacent rod sections.

[0013] Compared with the prior art, the present invention has at least the following advantages or beneficial effects: the use of the material belt is accurately controlled by the bag making mechanism, which reduces material waste and reduces production costs; the design of the suction cup and the positioning structure avoids the contact between the barrel conveying pipeline and the inner wall of the packaging bag, reducing the risk of cross contamination; the design of the material belt covering protective film and the peeling mechanism ensures the cleanliness of the material belt, prevents food contamination, and improves food safety; the design of the heat sealing wheel has uneven protrusions, which improves the heat sealing efficiency and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the installation structure of the guide mechanism in the present invention.

[0017] Figure 4 It is a cross-sectional schematic diagram of the guiding mechanism in the present invention.

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention from above.

[0019] Figure 6 It is a schematic diagram of the combined structure of the position adjusting structure and the position limiting structure in the present invention.

[0020] Figure 7 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0021] Figure 8 It is a schematic diagram of the partial installation structure of the guide frame and the transmission belt in the present invention.

[0022] Fig. 9 for Figure 6 Schematic diagram of the local enlarged structure at point B in the middle.

[0023] Fig.10It is a schematic diagram of the docking structure of the gas delivery pipe and the catheter in the present invention.

[0024] 1. Casing; 2. Barrel; 3. Frame; 4. Guide seat; 5. Guide seat; 6. Protective film; 7. First drive roller; 8. Second drive roller; 9. Material belt; 10. Guide mechanism; 11. Auxiliary roller; 12. Sealing mechanism; 101. Guide frame; 102. First push rod; 103. Limiting structure; 104. Positioning structure; 105. Suction cup; 106. Conduit; 107. Connecting seat; 108. Transmission belt; 109. Transmission wheel; 1041. Mounting plate; 1042. Guide plate; 1043. Limiting seat; 401. Second spring; 402. Second mounting frame; 403. Guide wheel; 501. Limiting frame; 502. Mounting rod; 503. First spring; 504. First mounting frame; 505. Heat sealing wheel; 506. Mounting seat; 13. Air pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1 The present invention provides a packaging device for oil-immersed food, such as Figure 1-Figure 9 As shown, it includes a casing 1, which is formed by welding 4 plates, and a plurality of observation ports are provided on the side wall of the casing 1, so as to facilitate observation of the operation of each component in the equipment and facilitate later maintenance. The barrel 2 is conventional technology; the frame 3 is formed by splicing steel profiles and has a rectangular frame structure. The frame 3 is installed in the casing 1 by bolts. The barrel 2 is mounted on the top of the frame 3 through the frame body, and a feed pipe is installed on the output end of the barrel 2. A solenoid valve is installed at the output port of the feed pipe, which is not shown in the figure, for the convenience of later material transportation. Two second drive rollers 8 are installed on the top of the frame 3 through the rotation of the shaft, and the two second drive rollers 8 are located on both sides of the barrel 2. The second drive rollers 8 are each installed with a rolled material belt 9; the middle part of the frame 3 is installed with a bag making mechanism opposite to the output port of the barrel 2.

[0028] A guide structure adapted to the two material strips 9 is provided in the bag making mechanism; an edge sealing mechanism is provided in the guide structure; and the edge sealing mechanism seals both sides of the two material strips 9 .

[0029] A positioning structure 104 is provided in the guide structure; the positioning structure 104 enables the upper ends of the two material strips 9 to form an inlet and outlet.

[0030] A traction mechanism is installed at the bottom of the bag making mechanism, which is used to pull the material belt 9 to move downward in the vertical direction, so that the above structure can proceed in an orderly manner during the bag making process.

[0031] In some technical solutions of the present invention, the guide structure includes two guide seats 5 slidably disposed in the frame 3 .

[0032] The two guide seats 5 have guide grooves on their opposite side walls, and the cross section of the guide grooves is rectangular. The two guide grooves form a feeding channel in the frame 3 for the two material strips 9 to move, and the edge sealing mechanism is installed in the feeding channel.

[0033] A limit frame 501 is fixed on both sides of the frame 3 by bolts or welding. The limit frame 501 is a plate structure. The limit frame 501 is slidably connected to the guide seat 5 by guide rods. The number of guide rods is at least 4. The guide rods are threadedly connected to the guide seat 5 on the same side, and a part of the guide rod is embedded in the side wall of the guide seat 5. A third spring connected to the limit frame 501 is sleeved on the guide rod. Through the above structure, the guide seat 5 has a movable space in the frame 3, that is, the two guide seats 5 can make reciprocating motions close to or away from each other.

[0034] In some technical solutions of the present invention, the edge sealing mechanism includes multiple sets of edge sealing structures, which are equidistantly installed in two guide grooves along the extension direction of the guide seat 5, so as to improve the sealing effect of the edge sealing mechanism on both sides of the two material strips 9. The edge sealing structures include two mounting rods 502 arranged in pairs, which are respectively penetrated on two opposite side walls of the guide groove, and are sleeved with a first spring 503 connected to the guide seat 5. The mounting rods 502 reciprocate linearly in the guide groove along their axes. The end of the mounting rod 502 placed in the guide groove is installed with a first mounting frame 504 by welding, and a heat sealing wheel 505 is arranged in the first mounting frame 504 through the rotation of a rotating rod. The heat sealing wheel 505 is conventional technology, which is actually a hot pressing wheel. The wheel surfaces of the two heat sealing wheels 505 abut against each other under the action of the first spring 503, and the two sides of the material strip 9 placed between the two are squeezed and heat-sealed.

[0035] Preferably, the surface of the heat-sealing wheel 505 is provided with uneven protrusions. The protrusions are metal electrodes and the entire heat-sealing wheel 505 is a conductor. The heat-sealing wheel 505 is electrically connected to an external power supply through a conductive slip ring, ensuring that the above structure continuously supplies power to the heat-sealing wheel 505, which is beneficial to improving the heat-sealing effect of the above structure on the tape 9.

[0036] In some technical solutions of the present invention, it further includes two sets of guiding mechanisms 10. The two guiding mechanisms 10 are respectively installed on both sides of the frame 3 with the guiding structure as the axis of symmetry. The number of the position-adjusting structures 104 is several groups, and several groups of the position-adjusting structures 104 are arranged around the outer side wall of the guiding mechanism 10.

[0037] In some technical solutions of the present invention, the guiding mechanism 10 includes two guiding frames 101 respectively installed on the same side of the frame 3. The guiding frame 101 is a special-shaped structure formed by bending a prefabricated part with a "C"-shaped cross-section through a bending machine. Its specific structure includes a first vertical section, a second vertical section, and a third vertical section with decreasing lengths in sequence. Both ends of the first vertical section are respectively installed with a first arc section and a second arc section. The radius of the first arc section is smaller than that of the second arc section. After the second vertical section and the free end of the second arc section are integrally formed, the second vertical section is parallel to the first vertical section. The third vertical section and the free end of the first arc section are integrally formed, and the third vertical section is parallel to the first vertical section. An arc section is integrally formed between the third vertical section and the second vertical section. The "C"-shaped grooves of the above structure are all interconnected to form a limiting channel. A transmission belt 108 connected end to end is arranged inside the guiding frame 101. The transmission belt 108 is sleeved in the limiting channel. The transmission belt 108 is a toothed belt structure. A transmission wheel 109 is installed on the guiding frame 101. The transmission wheel 109 is a gear structure. The transmission wheel 109 meshes with the transmission belt 108. The outer side wall of the transmission belt 108 is detachably connected to the position-adjusting structure 104. And a driving motor is installed on the guiding frame 101 and is in transmission connection with the transmission wheel 109 through a coupling.

[0038] In some technical solutions of the present invention, the positioning structure 104 includes two guide plates 1042 slidably arranged in the limiting frame 501, a plurality of mounting plates 1041 are installed between the two guide plates 1042, and a hinge is provided between any two adjacent mounting plates 1041, the hinge is a hinge structure, and the hinge can only rotate in one direction, and the rotation angle is 180°. A connecting seat 107 is installed on the transmission belt 108, and the connecting seat 107 is hinged to one of the guide plates 1042 in the positioning structure 104 on the same side. Through the above-mentioned plurality of mounting plates 1041 between the two guide plates 1042, a pulling force can be applied to the transmission belt 108 after it moves to a predetermined position, so that a single positioning structure 104 bends outward in the feeding channel to form a semi-annular structure, and the two positioning structures 104 form a ring-like structure in the feeding channel. Suction cups 105 are installed on the side walls of the mounting plate 1041 opposite to the material belt 9, and a conduit 106 is installed inside the mounting plate 1041. The conduit 106 is a flexible corrugated tube, and any two adjacent conduits 106 are interconnected through the flexible corrugated tube. An air pipe 13 is installed inside the limiting frame 501, and a first push rod 102 connected to the air pipe 13 is installed on the inner wall of the limiting frame 501. The axis of the air pipe 13 is parallel to the axis of the conduit 106, and the air pipe 13 is slidably arranged on the inner wall of the limiting frame 501 along the extension direction of the limiting frame 501 through a slider. A limiting spring connected to the slider is provided on the inner wall of the limiting frame 501. The air pipe 13 is inserted into the conduit 106 through a quick-release structure to achieve communication between the two. The suction cup 105 in the above structure can make the positioning structure 104 adsorb the two side walls of the packaging bag in the process of bending outward in the feeding channel, so that the two sides of the packaging bag formed by the two material belts 9 expand in opposite directions, thereby expanding the inlet and outlet of the packaging bag to have a larger diameter, which is convenient for the entry and exit of materials and avoids the contact between the conveying pipe of the barrel and the inner wall of the packaging bag, causing the packaging bag to be contaminated before the material is loaded.

[0039] In some technical schemes of the present invention, the traction mechanism includes a guide seat 4 installed in the frame 3 by bolts, and multiple groups of guide structures are installed in the guide seat 4. The guide structure includes two second mounting frames 402 arranged in pairs, and a discharge channel is reserved between the two second mounting frames 402. Guide wheels 403 are provided on the side walls of the second mounting frames 402 through the rotation of an axial rod. A drive motor that is transmission-connected to the guide wheel 403 is installed on the second mounting frame 402. The guide wheel 403 is a tubular structure with a hollow interior. The drive motor is not drawn in the figure. A second spring 401 connected to the guide seat 4 is installed on the side wall of the second mounting frame 402.

[0040] Preferably, the second mounting frame 402 is slidably arranged in the guide seat 4 along the horizontal direction, which can ensure that the second mounting frame 402 performs linear reciprocating motion along the horizontal direction.

[0041] Preferably, a rough rubber layer is provided on the wheel surface of the guide wheel 403 to enhance the friction force when the guide wheel 403 contacts the packaging bag, thereby improving the transmission efficiency of the structure.

[0042] Preferably, a sealing mechanism 12 is installed on the upper side of the traction mechanism, and the sealing mechanism 12 is used to seal the packaging bag loaded with materials. The sealing mechanism 12 is conventional technology, which is a heat sealer. The sealing mechanism 12 is actually located between the traction mechanism and the bag making mechanism.

[0043] Example 2 Further improvements are made on the basis of the embodiment 1 of the present invention: the material strip 9 is covered with a protective film 6 to protect the material strip 9 from being polluted by the outside world.

[0044] In some technical solutions of the present invention, a peeling mechanism for peeling off the protective film 6 attached to the material belt 9 is further provided in the frame 3. The peeling mechanism can peel off the protective film 6 attached to the material belt 9 by a predetermined length according to the use requirements, and ensure that the material belt 9 in the area is formed into a packaging bag by the bag making mechanism to ensure the continuous filling of the material.

[0045] In some technical solutions of the present invention, the stripping mechanism includes two limiting structures 103 installed in the feeding channel, the limiting structure 103 is provided with a mounting seat 506 connected to the guide seat 5, the limiting structure 103 is provided with a return spring connected to the mounting seat 506, the ends of the guide plate 1042 are both installed with limiting seats 1043, and the ends of the limiting structure 103 are slidably set in the limiting seats 1043.

[0046] The limiting structure 103 includes a plurality of rod sections spliced ​​in sequence, and a hinge structure is installed between any two adjacent rod sections. The hinge structure is a hinge, and the hinge can only rotate in one direction, that is, rotate in a specific direction. When the transmission belt 108 rotates counterclockwise and moves to a predetermined position, a pulling force is applied to the adjustment structure 104 formed by a plurality of mounting plates 1041, and the plurality of mounting plates 1041 are bent outward between two guide plates 1042 to form a semi-circular structure. In the process, the limiting seat 1043 installed at the end of the guide plate 1042 applies a thrust to the rod section, and also makes the rod section bend outward to form a semi-circular structure, so that the limiting structure 103 and the adjustment structure 104 jointly apply an outward thrust to the combination of the material belt 9 and the protective film 6, so that the opening of the packaging bag formed by the two material belts 9 is in a circular ring shape, ensuring that the packaging bag tends to be stable when filling the material, and facilitating the entry and exit of the material.

[0047] Preferably, two first drive rollers 7 are also installed on the frame 3, and the two first drive rollers 7 are located on both sides of the barrel 2, so as to facilitate the rewinding of the protective film 6 peeled off by the limiting structure 103, and according to the actual installation environment, an auxiliary roller 11 is installed on the frame 3 to guide the protective film 6 to move in a specific direction to prevent the protective film 6 from interfering with the normal movement of this structure, and the first drive roller 7 is connected to the servo motor installed on the frame 3, and the servo motor is not shown in the figure.

[0048] Method of using the packaging device for oil-immersed food: First, the free ends of the two rolled material strips 9 are passed through the bag making mechanism and then clamped by the traction mechanism, and the material strips 9 are pulled to move downward in the vertical direction; When the free ends of the two rolled material strips 9 move downward in the vertical direction, the edge sealing mechanism located in the guide structure seals the two sides of the two material strips 9 to form a packaging bag; When the packaging bag formed by closing both sides of the two material strips 9 reaches a predetermined length, the positioning structures 104 arranged in the guide mechanism 10 bend outwards in the feeding channel under the pulling force of the transmission belt 108, so that the two positioning structures 104 form a ring structure, so that the opening of the packaging bag formed by the two material strips 9 expands; Subsequently, the material is filled into the packaging bag through the barrel 2 and the feeding pipe; The traction mechanism pulls the packaging bag loaded with materials to move downward in the vertical direction; the sealing mechanism 12 arranged on the upper side of the traction mechanism seals the packaging bag loaded with materials; Repeat the above operation to complete the filling of the material.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A packaging device for oil-immersed food, comprising a housing (1), a barrel (2) and a frame (3); the frame (3) is installed in the housing (1), the barrel (2) is installed on the top of the frame (3), and is characterized in that: Two second driving rollers (8) are installed on the top of the frame (3), and the two second driving rollers (8) are located on both sides of the barrel (2); a rolled material belt (9) is installed on each of the second driving rollers (8); a bag making mechanism is installed in the middle of the frame (3) and is opposite to the output port of the barrel (2); The bag making mechanism is provided with a guide structure adapted to the two material strips (9); the guide structure is provided with an edge sealing mechanism for sealing both sides of the two material strips (9); The guide structure is provided with a positioning structure (104) for forming an inlet and outlet at the upper ends of the two material strips (9); A traction mechanism for pulling the material belt (9) to move downward in a vertical direction is provided at the bottom of the bag making mechanism.

2. The packaging device for oil-immersed food according to claim 1, characterized in that: The guide structure comprises two guide seats (5) slidably arranged in the frame (3); The two guide seats (5) are provided with guide grooves on opposite side walls, and the two guide grooves form a feeding channel for the two material belts (9) to move in the frame (3), and the edge sealing mechanism is installed in the feeding channel; Limiting frames (501) are fixedly provided on both sides of the frame (3); a plurality of guiding rods are provided on two side walls of the limiting frame (501) opposite to the guide seat (5); the guiding rods are connected to the guide seat (5) located on the same side; and a third spring connected to the limiting frame (501) is sleeved on the guiding rods.

3. The packaging device for oil-immersed food according to claim 2, characterized in that: The edge sealing mechanism comprises a plurality of groups of edge sealing structures, and the plurality of groups of edge sealing structures are respectively installed in two guide grooves; the edge sealing structure comprises two mounting rods (502) arranged in pairs, and the two mounting rods (502) are respectively penetrated through two opposite side walls of the guide groove, and the mounting rods (502) are sleeved with a first spring (503) connected to the guide seat (5), and the end of the mounting rod (502) placed in the guide groove is installed with a first mounting frame (504), and a heat sealing wheel (505) is rotatably arranged in the first mounting frame (504), and the wheel surfaces of the two heat sealing wheels (505) are in contact with each other.

4. The packaging device for oil-immersed food according to claim 2 or 3, characterized in that: It also includes two groups of guide mechanisms (10), the two guide mechanisms (10) being respectively mounted on both sides of the frame (3) with the guide structure as a symmetry axis, the number of the positioning structures (104) being a plurality of groups, and a plurality of groups of the positioning structures being arranged around the outer side wall of the guide mechanism (10).

5. The packaging device for oil-immersed food according to claim 4, characterized in that: The guide mechanism (10) comprises two guide frames (101) respectively mounted on the same side of the frame (3), a transmission belt (108) connected end to end is provided in the guide frame (101), a transmission wheel (109) is mounted on the guide frame (101), and the transmission wheel (109) is meshed with the transmission belt (108).

6. The packaging device for oil-immersed food according to claim 5, characterized in that: The positioning structure (104) comprises two guide plates (1042) slidably arranged in the limiting frame (501), a plurality of mounting plates (1041) are installed between the two guide plates (1042), hinges are provided between any two adjacent mounting plates (1041), suction cups (105) are installed on the side walls of the mounting plates (1041) opposite to the material belt (9), a conduit (106) is installed in the mounting plates (1041), and any two adjacent conduits (106) are connected to each other; an air supply pipe is installed in the limiting frame (501), a first push rod (102) connected to the air supply pipe is installed on the inner side wall of the limiting frame (501), and the air supply pipe and the conduit (106) are connected via a quick-release structure.

7. The packaging device for oil-immersed food according to claim 5, characterized in that: The traction mechanism comprises a guide seat (4) mounted in the frame (3), a plurality of guide structures being mounted in the guide seat (4), the guide structure comprising two second mounting frames (402) arranged in pairs, guide wheels (403) being rotatably mounted on the side walls of the second mounting frames (402), a drive motor being transmission-connected to the guide wheels (403) being mounted on the second mounting frames (402), and a second spring (401) connected to the guide seat (4) being mounted on the side walls of the second mounting frames (402).

8. The packaging device for oil-immersed food according to claim 7, characterized in that: The frame (3) is also provided with a peeling mechanism for peeling off the protective film (6) attached to the material strip (9).

9. The packaging device for oil-immersed food according to claim 8, characterized in that: The stripping mechanism comprises two limiting structures (103) installed in the material feeding channel, the limiting structures (103) are sleeved with a mounting seat (506) connected to the guide seat (5), the ends of the guide plates (1042) are both installed with limiting seats (1043), and the ends of the limiting structures (103) are slidably arranged in the limiting seats (1043); The limiting structure comprises a plurality of rod sections which are spliced ​​in sequence, and a hinge structure is installed between any two adjacent rod sections.

10. A method for using a packaging device for oil-immersed food, characterized in that: A packaging device for oil-immersed food according to any one of claims 5 to 9, comprising the following steps: First, the free ends of two rolled material strips (9) are passed through the bag making mechanism and then clamped by the pulling mechanism, and the material strips (9) are pulled to move downward in the vertical direction; When the free ends of the two rolled material strips (9) move downward in the vertical direction, the edge sealing mechanism located in the guide structure seals the two sides of the two material strips (9) to form a packaging bag; When the packaging bag formed by closing both sides of the two material strips (9) reaches a predetermined length, the positioning structure (104) provided in the guide mechanism (10) causes the two positioning structures (104) to bend outwards in the feeding channel under the pulling force of the transmission belt (108), so that the two positioning structures (104) form a ring structure, and the opening of the packaging bag formed by the two material strips (9) expands; The material is filled into the packaging bag through the barrel (2) and the feeding pipe; The traction mechanism pulls the packaging bag loaded with materials to move downward in a vertical direction; a sealing mechanism (12) arranged on the upper side of the traction mechanism seals the packaging bag loaded with materials; and the filling of materials is completed.

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