Packaging paper lug folding production line of food container

Abstract

The utility model discloses a packaging paper lug folding production line for food containers, which comprises a rack, a conveying mechanism is arranged on the rack, the conveying mechanism comprises an upper conveying surface and a lower conveying surface which are matched in conveying, a feeding mechanism is arranged at one end of the conveying mechanism, the feeding mechanism comprises a material placing frame and an overturning material taking mechanism, and the overturning material taking mechanism is arranged on the material placing frame. The packaging paper lug folding production line comprises a conveying mechanism, a material placing frame and a turnover material taking mechanism, a lug folding mechanism is arranged on a conveying path of the conveying mechanism, and the lug folding mechanism comprises a first lug folding guide rod and a second lug folding guide rod which are arranged along the conveying path. Paper cards on the material placing frame are taken to the conveying mechanism through the overturning material taking mechanism, the conveying mechanism is matched with the first lug folding guide rod and the second lug folding guide rod to conduct automatic lug folding work on the paper cards, automatic production is achieved, the shapes of the automatically-folded paper cards are regular and attractive, and the production efficiency is improved. The problems that traditional manual lug folding is time-consuming and labor-consuming, lug folding is irregular, and folding is missed are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging machinery, and particularly relates to a packaging paper ear-folding production line for food containers. Background Art

[0002] At present, most of the lunch boxes or packaging boxes will first put a paper card with a label (or waist seal) on the outside of the box body when packaging, and then heat-seal the package with a plastic film. The paper card usually includes a main body in the middle and folded ears on both sides. There is a crease between the main body and the folded ears. Before putting the paper card on the box body, it is usually necessary to fold the folded ears on both sides of the paper card along the crease, and fold them into a shape corresponding to the box body before putting them on the box body. However, most of the paper cards of the existing box bodies are formed by traditional manual folding ears, which is time-consuming and laborious, and manual operation is prone to fatigue, resulting in missed folding, and the shape of the manual folded ears is irregular, which affects the appearance.

[0003] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Utility Model Content

[0004] The utility model aims to provide a packaging paper folding ear production line for food containers which is simple to operate and can be operated continuously.

[0005] In order to achieve the above object, the utility model adopts the following technical solution:

[0006] A production line for folding ears of packaging paper for food containers, comprising a frame, a conveying mechanism is arranged on the frame, the conveying mechanism comprises an upper conveying surface and a lower conveying surface for conveying cooperation, a feeding mechanism is arranged at one end of the conveying mechanism, the feeding mechanism comprises a material rack for placing paper cards and a flipping and fetching mechanism for moving the paper cards on the material rack to the inlet end of the conveying mechanism, the flipping and fetching mechanism is arranged on a side of the material rack close to the conveying mechanism, an ear folding mechanism is arranged on the conveying path of the conveying mechanism, the ear folding mechanisms are symmetrically arranged on both sides of the conveying mechanism, and the folding mechanism is arranged on the conveying path of the conveying mechanism. The ear mechanism includes a first folding ear guide rod and a second folding ear guide rod arranged along the conveying path, the second folding ear guide rod is located between the first folding ear guide rod and the conveying mechanism, a space for the folding ear to pass through is provided between the first folding ear guide rod and the second folding ear guide rod, an entrance end of the folding ear mechanism is formed between the first folding ear guide rod and the second folding ear guide rod near the feeding mechanism, an end of the first folding ear guide rod close to the feeding mechanism is higher than the second folding ear guide rod, and the first folding ear guide rod near its middle gradually extends to the bottom of the second folding ear guide rod to form a folding ear portion.

[0007] Furthermore, the conveying mechanism includes a first conveyor belt arranged on the frame and a second conveyor belt arranged above the first conveyor belt, the upper conveying surface is located at the top of the first conveyor belt, and the lower conveying surface is located at the bottom of the second conveyor belt.

[0008] Furthermore, the material rack includes a support frame and a plurality of limit rods arranged above the support frame, a space for placing paper cards is formed between the plurality of limit rods, and a stop rod for resisting paper cards is also provided at one end between the plurality of limit rods close to the conveying mechanism, and the limit rod and the stop rod can be lifted and fixed on the support frame through corresponding lifting connection components.

[0009] Furthermore, the support frame is tilted, and a horizontal position of a side of the support frame close to the conveying mechanism is lower than a horizontal position of the other side.

[0010] Furthermore, the flipping and material picking mechanism includes a fixed plate fixedly connected to the material rack, a rotating motor fixedly arranged on the fixed plate, a flipping assembly fixed at the output end of the rotating motor, and a suction cup fixedly arranged on the flipping assembly, and the two ends of the rotation path of the suction cup correspond to the position of the paper card on the material rack and the position of the entrance end of the conveying mechanism respectively.

[0011] Furthermore, the flipping assembly includes a connecting rod fixedly arranged at the output end of the rotating motor, a limit plate, a limit seat fixedly protruding on the fixed plate, and a fixed rod fixed at one end of the limit plate, a limit long groove is provided in the limit plate, the limit seat is passed through the limit long groove, the arrangement direction of the fixed rod is the same as the arrangement direction of the rotating motor, the end of the connecting rod away from the rotating motor is rotatably connected to the fixed rod, a suction cup mounting seat is provided on the fixed rod, and the suction cup is arranged on the suction cup mounting seat.

[0012] Furthermore, the frame is also provided with a first lifting mechanism and a second lifting mechanism respectively used for controlling the first conveyor belt and the second conveyor belt to rise and fall.

[0013] Furthermore, the first lifting mechanism and the second lifting mechanism each include a transverse plate fixed on the frame, columns respectively arranged on both sides of the transverse plate, and a fixed block fixedly arranged above the transverse plate, the two sides of the fixed block are arranged on the corresponding columns through bearings, the top of the fixed block in the first lifting mechanism is fixedly connected to the bottom of the first conveyor belt, and the bottom of the fixed block in the second lifting mechanism is fixedly connected to the top of the second conveyor belt.

[0014] By adopting the above-mentioned design scheme, the beneficial effects of the utility model are:

[0015] The utility model provides a production line for folding ears of packaging paper for food containers, by arranging a conveying mechanism, a material rack and a turning and picking mechanism, the turning and picking mechanism takes the paper cards on the material rack to the conveying mechanism, and the conveying mechanism cooperates with the first ear folding guide rod and the second ear folding guide rod to automatically fold the ears of the paper cards, thus realizing automated production. The paper cards after the ears are automatically folded have regular and beautiful shapes, thus solving the problems of time-consuming and labor-intensive traditional manual ear folding, irregular ear folding and missed folding.

[0016] Furthermore, by providing the first lifting mechanism and the second lifting mechanism, the distance between the first conveyor belt and the second conveyor belt can be adjusted to accommodate paper cards of various thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall folding ear production line of the utility model.

[0018] Figure 2 This is the utility model of folding ear production line Figure 1 Enlarged view of point A in the middle.

[0019] Figure 3 It is a three-dimensional schematic diagram of the folding ear production line of the utility model from another perspective, in which the feeding mechanism is omitted.

[0020] Figure 4 and Figure 5 It is a side view of the turning mechanism of the utility model in different states.

[0021] In the figure:

[0022] 1- conveying mechanism; 10- frame;

[0023] 11-first conveyor belt; 12-second conveyor belt;

[0024] 2-folding ear mechanism; 21-first folding ear guide rod;

[0025] 22-second folding ear guide rod; 3-paper card;

[0026] 31-main body; 32-folded ear;

[0027] 4-material rack; 41-support frame;

[0028] 42-limiting rod; 43-blocking rod;

[0029] 44-lifting assembly; 5-turning and retrieving mechanism;

[0030] 51-fixed plate; 52-rotating motor;

[0031] 53-flip assembly; 54-suction cup;

[0032] 55-connecting rod; 56-limiting plate;

[0033] 57-fixing seat; 58-fixing rod;

[0034] 59-square wafer tray; 561-limiting long slot;

[0035] 6-first lifting mechanism; 61-horizontal plate;

[0036] 62-column; 63-fixed block;

[0037] 64-fixed column; 65-gear;

[0038] 66- rocker; 7- second lifting mechanism;

[0039] 8- The third lifting mechanism. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 5 As shown, a packaging paper folding ear production line for food containers includes a frame 10, on which a conveying mechanism 1 is provided, and the conveying mechanism 1 includes an upper conveying surface and a lower conveying surface for conveying cooperation. Specifically, the conveying mechanism 1 includes a first conveyor belt 11 arranged on the frame 10 and a second conveyor belt 12 arranged above the first conveyor belt 11, the upper conveying surface is located at the top of the first conveyor belt 11, and the lower conveying surface is located at the bottom of the second conveyor belt 12, and the conveying speeds of the first conveyor belt 11 and the second conveyor belt 12 are the same. It should be noted that the driving mode and fixing mode of the first conveyor belt 11 and the second conveyor belt 12 can adopt the existing conventional driving mode and fixing mode, which will not be described in detail here.

[0042] A feeding mechanism is provided at one end of the conveying mechanism 1, and an ear folding mechanism 2 is provided on the conveying path of the conveying mechanism 1. The ear folding mechanism 2 is symmetrically arranged on both sides of the conveying mechanism 1. Specifically, the ear folding mechanism 2 includes a first ear folding guide rod 21 and a second ear folding guide rod 22 arranged along the conveying path, and the second ear folding guide rod 22 is located between the first ear folding guide rod 21 and the conveying mechanism 1. When the paper card 3 is located on the conveying mechanism 1, the main body 31 of the paper card 3 is located between the first conveyor belt 11 and the second conveyor belt 12, and the ears 32 on both sides of the paper card 3 are located at the corresponding first conveyor belt 11. Between the folding ear guide rod 21 and the second folding ear guide rod 22, correspondingly, there is a space for the folding ear 32 to pass through between the first folding ear guide rod 21 and the second folding ear guide rod 22, the end of the first folding ear guide rod 21 close to the feeding mechanism is higher than the second folding ear guide rod 22, and the entrance end of the folding ear mechanism 2 is formed between the first folding ear guide rod 21 and the second folding ear guide rod 22 close to the feeding mechanism, and corresponds to the entrance end of the conveying mechanism 1, so that the paper card 3 conveyed by the feeding mechanism can directly fall between the first folding ear guide rod 21 and the second folding ear guide rod 22, such as Figure 3 As shown, the first folding ear guide rod 21 gradually extends from the position near the middle thereof to the lower side of the second folding ear guide rod 22 to form a folding ear portion. It should be noted that the widths of the first conveyor belt 11 and the second conveyor belt 12 in the present invention correspond to the widths of the main body 31 of the paper card 3, so that after the paper card 3 enters the conveying mechanism 1 from the entrance end, the folding ears on both sides of the paper card 3 can be located between the corresponding first folding ear guide rod 21 and the second folding ear guide rod 22;

[0043] When the paper card 3 enters the conveying path of the conveying mechanism 1 from the entrance end, the main body 31 of the paper card 3 is always pressed against by the upper conveying surface and the lower conveying surface, and moves toward the other end of the conveying mechanism 1. The folded ears 32 on both sides of the paper card 3 are located between the inner side of the first folded ear guide rod 21 and the outer side of the second folded ear guide rod 22. When the paper card 3 moves to the folded ear portion under the action of the conveying mechanism 1, the first folded ear guide rod 21 gradually extends to the bottom of the second folded ear guide rod 22, so that the inner side of the first folded ear guide rod 21 will contact the paper card 3. The folded ear 32 of the paper card 3 is squeezed, and the folded ear 32 of the paper card 3 is folded inwardly as the path of the first folded ear guide rod 21 changes, so that when the paper card 3 passes through the folded ear portion, the automatic ear folding work is completed under the action of the first folded ear guide rod 21 and the second folded ear guide rod 22, and the paper card 3 is continuously conveyed to the other end of the conveying mechanism 1. Furthermore, one end of the first folded ear guide rod 21 away from the folded ear portion gradually extends from below the second folded ear guide rod 22 to be flush with the second folded ear guide rod 22, so as to facilitate the subsequent removal of the paper card 3.

[0044] The feeding mechanism of the present invention comprises a material rack 4 for placing paper cards 3 and a flipping and fetching mechanism 5 for moving the paper cards 3 on the material rack 4 to the entrance end of the conveying mechanism 1. The flipping and fetching mechanism 5 is arranged on a side of the material rack 4 close to the conveying mechanism 1.

[0045] The arrangement direction of the material rack 4 is the same as that of the conveying mechanism 1. The material rack 4 includes a support frame 41 and a plurality of limit rods 42 arranged above the support frame 41. A space for placing the paper card 3 is formed between the plurality of limit rods 42. Two stop rods 43 for resisting the paper card 3 are also arranged at one end between the plurality of limit rods 42 close to the conveying mechanism 1. Specifically, the utility model takes the paper card 3 as an example of a cross-shaped paper card 3, and four limit rods 42 are correspondingly arranged. The four limit rods 42 are respectively clamped at the four corners of the paper card 3, so that the paper card 3 can only move in the space formed between the four limit rods 42. Preferably, the limit rod 42 is fixed to the support frame 41 by a corresponding lifting connection assembly 44. The lifting connection assembly 44 in this embodiment is a conventional cross-shaped connecting member in the field and two pillars (or optical axes) correspondingly arranged on the connecting member. Specifically, the two pillars on the connecting member are arranged vertically and horizontally, respectively. The two pillars are respectively connected to the support frame 41 and the limit rod 42. The end away from the connecting piece is connected to the support frame 41, and the end of the transversely arranged pillar away from the connecting piece is connected to the limit rod 42, so that the limit rod 42 can be raised and lowered relative to the support frame 41. It should be noted that in the present invention, the transversely arranged pillars need to correspond to the number of the limit rods 42, that is, the vertically arranged pillars are provided with two upper and lower transversely arranged pillars, and the two transversely arranged pillars are respectively connected to the vertically arranged pillars through connecting pieces. In actual use, multiple sets of lifting connection components 44 can be set to achieve the effect of supporting the limit rod 42. Correspondingly, the blocking rod 43 in this embodiment is also fixed to the support frame 41 by the corresponding lifting connection component 44, so that the blocking rod 43 can be raised and lowered relative to the support frame 41. The blocking rod 43 in the present invention only plays the role of blocking the paper card 3 on the limit rod 42. Specifically, the two blocking rods 43 are respectively arranged on both sides of the support frame 41, and a space for the flipping and picking mechanism 5 to absorb is formed between the two blocking rods 43.

[0046] Preferably, the support frame 41 in the utility model is arranged at an angle, and the horizontal position of the side of the support frame 41 close to the conveying mechanism 1 is lower than the horizontal position of the other side. When in use, the paper card 3 is placed from the end of the material rack 4 away from the conveying mechanism 1, and the paper card 3 is located between multiple limit rods 42. The paper card 3 slides to the position of the stop rod 43 under the action of gravity and is blocked by the stop rod 43.

[0047] The material rack 4 is located obliquely above the conveying mechanism 1, and the paper card 3 on the material rack 4 is taken to the entrance end of the conveying mechanism 1 by the flipping material taking mechanism 5. Specifically, the flipping material taking mechanism 5 includes a fixed plate 51 fixedly connected to the support frame 41, a rotating motor 52 fixedly arranged on the fixed plate 51, a flipping assembly 53 fixed at the output end of the rotating motor 52, and a suction cup 54 fixedly arranged on the flipping assembly 53. The two ends of the rotation path of the suction cup 54 correspond to the position of the paper card 3 on the material rack 4 and the position of the entrance end of the conveying mechanism 1, respectively. Correspondingly, a space for the suction cup 54 to suck is reserved between the blocking rods 43. The fixed plate 51 extends toward the direction of the conveying mechanism 1, and the rotating motor 52 is horizontally arranged and fixed on the fixed plate 51.

[0048] The flip assembly 53 includes a connecting rod 55 fixedly arranged at the output end of the rotating motor 52, a limiting plate 56, a fixing seat 57 fixedly protruding on the fixing plate 51, and a fixing rod 58 fixedly arranged at one end of the limiting plate 56. The fixing seat 57 is arranged at the end of the fixing plate 51 away from the rotating motor 52. The limiting plate 56 is a rectangular plate. A limiting long groove 561 is provided in the limiting plate 56. The fixing seat 57 is penetrated in the limiting long groove 561, so that the limiting plate 56 can move relative to the fixing seat 57 through the limiting long groove 561. The setting direction of the connecting rod 55 is perpendicular to the arrangement direction of the rotating motor 52. The arrangement direction of the fixing rod 58 is the same as the arrangement direction of the rotating motor 52. The connecting rod 55 is away from the rotating motor 52. One end of the rotating motor 52 is rotatably connected to the fixed rod 58. Specifically, a through hole is formed at one end of the connecting rod 55 away from the rotating motor 52 for the fixed rod 58 to pass through. The connecting rod 55 and the fixed rod 58 are rotatably connected in a conventional manner, for example, they are rotatably connected through a bearing. A suction cup mounting seat 59 is fixed to the fixed rod 58, and a suction cup 54 is arranged on the suction cup mounting seat 59. It should be noted that in the present utility model, the suction cup 54 can be a conventional vacuum suction cup in the field. The length of the second conveyor belt 12 is less than that of the first conveyor belt 11, and an operating space is reserved at a position near the entrance end of the second conveyor belt 12 for the flipping and picking mechanism 5 to place the paper card 3 on the first conveyor belt 11.

[0049] like Figure 4 and Figure 5As shown, when the flipping and picking mechanism 5 is in the initial position, the suction cup 54 is located at the position of the opening end and above the first conveyor belt 11, and the suction cup 54 is facing the first conveyor belt 11. When in use, the rotating motor 52 is started to drive the connecting rod 55 to rotate. Since the connecting rod 55 and the fixed rod 58 are rotatably connected, the connecting rod 55 will drive the end of the limit plate 56 provided with the fixed rod 58 to move to a position close to the material rack 4 when it swings, so that the suction cup 54 fixed on the fixed rod 58 is flipped to the position of the paper card 3 on the material rack 4, sucking the paper card 3, and then controlling the rotating motor 52 to rotate to suck out the paper card 3. Since the paper card 3 has a certain softness, it will be sucked out by the suction cup 54 from the material rack. The paper card 3 is sucked out from the rack 4, and the rotating motor 52 rotates to make the suction cup 54 return to the initial position to place the paper card 3 on the first conveyor belt 11, so as to carry out the subsequent ear folding work; it should be noted that the length of the limiting long groove 561 needs to correspond to the moving distance of the suction cup 54, so that the limiting plate 57 can drive the suction cup 54 to move from the initial position to the material rack 4. The flipping and picking mechanism 5 in the utility model can also adopt other existing structures, as long as it can realize the paper card 3 on the material rack 4 to the entrance end of the conveying mechanism 1, such as the flipping and feeding device disclosed in the publication number "CN113548262A" and the name "A kind of automatic flipping and feeding device with reduced amplitude".

[0050] The utility model provides a production line for folding ears of packaging paper for food containers, by providing a conveying mechanism 1, a material rack 4 and a turning and picking mechanism 5, wherein the paper card 3 on the material rack 4 is picked up onto the conveying mechanism 1 by the turning and picking mechanism 5, and the paper card 3 is automatically folded ears by the conveying mechanism 1 in cooperation with a first ear folding guide rod 21 and a second ear folding guide rod 22, thereby realizing automated production. The paper card 3 after the ear folding is automatically carried out has a regular and beautiful shape, thereby solving the problems of time-consuming and labor-intensive traditional manual ear folding, irregular ear folding and missed folding.

[0051] Further, such as Figure 1 and Figure 3As shown, the frame 10 is also provided with a first lifting mechanism 6 and a second lifting mechanism 7 for controlling the first conveyor belt 11 and the second conveyor belt 12 to rise and fall. Specifically, the first lifting mechanism 6 includes a transverse plate 61 fixed to the frame 10, columns 62 respectively arranged on both sides of the transverse plate 61, and a fixed block 63 fixedly arranged above the transverse plate 61. Both sides of the fixed block 63 are arranged on corresponding columns 62 through bearings. The top of the fixed block 63 is fixedly connected to the bottom of the first conveyor belt 11, and the bottom of the transverse plate 61 corresponds to the columns on both sides. A fixed column 64 is provided at the position of the column 62, and a gear 65 is provided below the fixed column 64. The column 62 passes through the cross plate 61 and the fixed column 64 and is fixedly connected to the gear 65. The fixed column 64 and the column 62 are connected by threads. In this embodiment, the first lifting mechanism 6 is provided with two groups, and the two groups of first lifting mechanisms 6 are respectively provided at both ends of the first conveyor belt 11. The gears 65 in the two groups of first lifting mechanisms 6 are connected by chains (not shown in the figure). The bottom of one of the columns 62 is connected with a gear for controlling the column 6 2, the rocker 66 is rotated, and the rocker 66 drives one of the columns 62 to rotate. The gear 65 on the column 62 will rotate synchronously under the action of the chain. Since the column 62 and the fixed column 64 are threadedly connected, the column 62 can move up and down relative to the fixed column 64. The up and down movement of the column 62 drives the fixed block 63 and the first conveyor belt 11 to move up and down. The structure of the second lifting mechanism 7 is the same as that of the first lifting mechanism 6. The only difference is that the fixed block in the second lifting mechanism 7 is arranged on the top of the second conveyor belt 12 and is fixedly connected to the top of the second conveyor belt 12. The second lifting mechanism 7 is arranged between the transverse plates 61 of the two groups of the first lifting mechanisms 6. Preferably, multiple columns 62 can be arranged on the transverse plate 61 to achieve a better supporting effect. Gears 65 can be respectively arranged at the positions corresponding to the columns 62 on the transverse plate 61 and connected with chains to strengthen the linkage between the columns 62. By setting the first lifting mechanism 6 and the second lifting mechanism 7, the distance between the first conveyor belt 11 and the second conveyor belt 12 can be adjusted to adapt to paper cards 3 of various thicknesses.

[0052] Preferably, Figure 1 As shown, a third lifting mechanism 8 can also be set between the material rack 4 and 10 to adjust the height position of the material rack 4. The structure of the third lifting mechanism 8 is the same as that of the first lifting mechanism 1. When in use, the specifications of the fixed block in the third lifting mechanism 8 are adjusted so that it is fixed to the material rack 4.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A food container wrapping paper folding ear production line, comprising a frame, characterized in that: The frame is provided with a conveying mechanism, the conveying mechanism includes an upper conveying surface and a lower conveying surface for conveying cooperation, a feeding mechanism is provided at one end of the conveying mechanism, the feeding mechanism includes a material rack for placing paper cards and a flipping and picking mechanism for moving the paper cards on the material rack to the entrance end of the conveying mechanism, the flipping and picking mechanism is arranged on a side of the material rack close to the conveying mechanism, an ear folding mechanism is provided on the conveying path of the conveying mechanism, the ear folding mechanisms are symmetrically arranged on both sides of the conveying mechanism, the ear folding mechanism includes a first ear folding guide rod and a second ear folding guide rod arranged along the conveying path, the second ear folding guide rod is located between the first ear folding guide rod and the conveying mechanism, a space for the ear folding to pass through is provided between the first ear folding guide rod and the second ear folding guide rod, the entrance end of the ear folding mechanism is formed between the first ear folding guide rod and the second ear folding guide rod near the feeding mechanism, the end of the first ear folding guide rod close to the feeding mechanism is higher than the second ear folding guide rod, and the first ear folding guide rod near the middle thereof gradually extends to the bottom of the second ear folding guide rod and forms an ear folding portion.

2. The food container wrapping paper folding ear production line according to claim 1, characterized in that: The conveying mechanism includes a first conveying belt arranged on the frame and a second conveying belt arranged above the first conveying belt, the upper conveying surface is located at the top of the first conveying belt, and the lower conveying surface is located at the bottom of the second conveying belt.

3. The food container wrapping paper folding ear production line according to claim 1, characterized in that: The material rack includes a support frame and a plurality of limit rods arranged above the support frame, a space for placing paper cards is formed between the plurality of limit rods, and a stop rod for resisting paper cards is also provided at one end between the plurality of limit rods close to the conveying mechanism, and the limit rod and the stop rod are both liftably fixed on the support frame through corresponding lifting connection components.

4. The food container wrapping paper folding ear production line according to claim 3, characterized in that: The support frame is tilted, and a horizontal position of one side of the support frame close to the conveying mechanism is lower than a horizontal position of the other side.

5. The food container wrapping paper folding ear production line according to claim 1, characterized in that: The flipping and picking mechanism includes a fixed plate fixedly connected to the material rack, a rotating motor fixedly arranged on the fixed plate, a flipping assembly fixed at the output end of the rotating motor, and a suction cup fixedly arranged on the flipping assembly, and the two ends of the rotation path of the suction cup correspond to the position of the paper card on the material rack and the position of the entrance end of the conveying mechanism respectively.

6. The food container wrapping paper ear folding production line according to claim 5, characterized in that: The flip assembly includes a connecting rod fixedly arranged at the output end of the rotating motor, a limit plate, a limit seat fixedly protruding on the fixed plate, and a fixed rod fixed at one end of the limit plate. A limit long groove is provided in the limit plate, and the limit seat is passed through the limit long groove. The arrangement direction of the fixed rod is the same as the arrangement direction of the rotating motor. One end of the connecting rod away from the rotating motor is rotatably connected to the fixed rod. A suction cup mounting seat is provided on the fixed rod, and the suction cup is arranged on the suction cup mounting seat.

7. The food container wrapping paper folding ear production line according to claim 2, characterized in that: The frame is also provided with a first lifting mechanism and a second lifting mechanism respectively used for controlling the first conveyor belt and the second conveyor belt to rise and fall.

8. The food container wrapping paper folding ear production line according to claim 7, characterized in that: The first lifting mechanism and the second lifting mechanism each include a transverse plate fixed on the frame, columns respectively arranged on both sides of the transverse plate, and a fixed block fixedly arranged above the transverse plate, both sides of the fixed block are arranged on the corresponding columns through bearings, the top of the fixed block in the first lifting mechanism is fixedly connected to the bottom of the first conveyor belt, and the bottom of the fixed block in the second lifting mechanism is fixedly connected to the top of the second conveyor belt.

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