CN107934036B - Food can palletizing and packaging production line - Google Patents

Abstract

The present invention discloses a food can stacking and packaging production line: including a main feeding channel, a can collection and conveying platform, a bottom bracket, a paper padding rack, a top plate rack, a stacking robot, a cable tie packing machine, and a wrapping machine. The present invention arranges the various equipment of the food can stacking and packaging production line reasonably, with a high degree of integration, and can significantly improve the overall efficiency of food can stacking and packaging; and the stacking robot is a multi-purpose machine, that is, one device can realize the transportation of iron can arrays, paper padding, and top plates, with a high degree of integration, reducing the space occupied by the production line.

Description

Food can palletizing and packaging production line

Technical Field

The invention relates to the technical field of packaging machinery, and in particular to a food can palletizing and packaging production line.

Background technique

At the back end of the can production line, the unsealed cans need to be stacked by a palletizer, then packed by a tie machine and wrapped with film by a wrapping machine for the next step of packaging and transportation. In the above process, various types of equipment are needed, involving the transfer and use of various logistics such as cans, palletizing trays, padding paper, top plates, tie wraps, films, etc.

Patent documents with authorization announcement numbers CN203959278U and CN206218753U each disclose a can arrangement device for a palletizer, which is used to arrange iron cans in an orderly and regular manner at a designated position to prepare for the next step of palletizing. The above two can arrangement devices can automatically arrange cans, but they are not fully automatic devices. During operation, manual assistance or leak detection is still required to ensure that the iron cans are arranged in a regular staggered manner.

Patent document with application publication number CN107161706A discloses a palletizing end effector, which uses a vacuum suction cup to transfer plate-shaped materials. If one wants to use one device to automatically transfer multiple materials such as iron cans and plastic plates, it is necessary to optimize the above palletizing end effector.

The patent document with application publication number CN105173760A discloses a palletizing robot, which is a mechanical arm that can provide driving support for the aforementioned palletizing end effector. The patent document with authorization announcement number CN204776151U discloses a fully automatic vertical and horizontal cross-strap strapping machine, which can be used for strapping of iron can stacks. The patent document with authorization announcement number CN105691687B discloses a wrapping machine, which can be used for film wrapping of iron can stacks.

Under the existing technology, there is a lack of overall optimization design for food can palletizing and packaging production lines. In most cases, can manufacturers purchase single equipment on demand and assemble them by themselves. This will bring three problems: first, the performance of some equipment in the production line cannot be fully utilized; second, the degree of integration is not high, and multiple equipment is used to complete the work that can be completed with fewer equipment; third, the targetedness is not strong, and the purchased equipment needs to be modified before it can be used. In either case, the result will be a waste of production resources and reduce the competitiveness of the enterprise.

Summary of the invention

In order to improve the automation degree and production efficiency of food can palletizing and packaging, the present invention provides a food can palletizing and packaging production line.

The technical solution adopted by the present invention is as follows:

A food can palletizing and packaging production line comprises a main feeding channel for conveying iron can stacks, wherein the main feeding channel is provided with a palletizing section, a tie packaging section, a winding section and a stacking section in sequence along the feeding direction; a can collecting and conveying platform for arranging the iron cans in an orderly and staggered manner to form an iron can square array; a bottom bracket for placing the bottom brackets of the iron can stack and conveying the bottom brackets to the main feeding channel after separation; a paper padding rack for placing the paper padding between each layer of iron cans in the iron can stack; a top plate rack for placing the top plate of the iron can stack; a palletizing robot for transferring the iron can square array, the paper padding and the top plate to the palletizing section to form the iron can stack; a tie packaging machine corresponding to the tie packaging section and used for tie packaging; and a winding machine corresponding to the winding section and used for winding film.

The beneficial effects of the present invention are as follows: the present invention reasonably arranges the various equipment of the food can palletizing and packaging production line, has a high degree of integration, and can significantly improve the overall efficiency of food can palletizing and packaging; and the palletizing robot is a multi-purpose machine, that is, one device can realize the transportation of iron can arrays, padding paper, and top plates, has a high degree of integration, and reduces the space occupied by the production line.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a first part of a plan view of an embodiment of the present invention.

FIG. 2 is a second part of the plan layout diagram of the embodiment of the present invention.

FIG. 3 is a front view of the palletizing robot in the embodiment of the present invention.

FIG. 4 is a schematic diagram of a tank collection and conveying platform in an embodiment of the present invention.

FIG. 5 is a schematic diagram of a cupping device according to an embodiment of the present invention.

FIG. 6 is a top view of the cupping device according to the embodiment of the present invention.

FIG. 7 is a schematic diagram of the internal structure of an embodiment of the present invention.

FIG. 8 is a schematic diagram of a tank blocking device in an embodiment of the present invention.

FIG. 9 is a schematic diagram of a can sorting device according to an embodiment of the present invention.

FIG. 10 is a schematic diagram of a bottom bracket according to an embodiment of the present invention.

FIG. 11 is a front view of the bottom bracket according to the embodiment of the present invention.

12 is a front view of the bottom bracket after the bottom bracket is placed in the embodiment of the present invention.

FIG. 13 is an enlarged view of point A in an embodiment of the present invention.

14 is a schematic diagram of a paper pad rack or a top plate rack in an embodiment of the present invention.

Figure 15 is a top view of the paper rack or top plate rack in an embodiment of the present invention.

FIG. 16 is an enlarged view of point B in the embodiment of the present invention.

FIG. 17 is a schematic diagram of a first structure of a multifunctional grabbing plate according to an embodiment of the present invention.

FIG. 18 is a schematic diagram of a second structure of the multifunctional grabbing plate in an embodiment of the present invention.

19 is a cross-sectional view of the second structure of the multifunctional grabbing plate in the embodiment of the present invention.

Main feeding channel 1, stacking section 11, strapping section 12, winding section 13, unstacking section 14; can collecting and conveying platform 2, No. 2 frame 21, can conveyor belt 22, can shifting device 23, can blocking device 24, can sorting device 25, adjustable baffle 26, baffle 231, can inlet channel 232, can shifting turntable 233, arc groove 234, rotating shaft 241, can blocking top plate 242, can blocking plate 243, tail baffle 251, can whole plate 252, tooth-shaped notch 253; bottom bracket 3, No. 3 frame 31, conveyor chain 32, liftable bottom frame 33, separation device 34, lifting device 35, separation piece 341, separation piece mounting plate 342, No. 1 driving cylinder 343, Guide rod No. 1 344, lifting member 351, drive cylinder No. 2 352, guide rod No. 2 353; paper pad rack 4, frame No. 4 41, horizontal pallet 42, horizontal pallet lifting device 43, leveling device 44, guide rod No. 3 431, drive cylinder No. 3 432, vertical frame 441, horizontal frame 442, horizontal push plate 443, guide rod No. 4 444, drive cylinder No. 445; top plate frame 5; palletizing robot 6, mounting seat 61, mechanical arm 62, multi-function grabbing plate 63, square plate body 631, adsorption bottom plate 632, magnetic disk assembly 633, vacuum suction cup 634, clamping claw 635, tank support rod 636; cable tie baler 7; wrapping machine 8; stacking lifter 9.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

In the embodiment, as shown in Figures 1 to 19, a food can stacking and packaging production line includes: a main feeding channel 1 for conveying a stack of iron cans, wherein the main feeding channel is provided with a stacking section 11, a cable tie packaging section 12, a winding section 13, and a stacking section 14 in sequence along the feeding direction; a can collection and conveying platform 2 for arranging the iron cans in an orderly and staggered manner to form an iron can array; a bottom bracket 3 for placing the bottom brackets of the iron can stack and conveying the bottom brackets to the main feeding channel 1 after separation; a paper padding rack 4 for placing the paper padding between each layer of iron cans in the iron can stack; a top plate rack 5 for placing the top plate of the iron can stack; a stacking robot 6 for transferring the iron can array, the paper padding, and the top plate to the stacking section 11 to form the iron can stack; a cable tie packaging machine 7 corresponding to the cable tie packaging section 12 for cable tie packaging; a winding machine 8 corresponding to the winding section 13 for winding film; a stacking lifter 9 corresponding to the stacking section 14 for stacking with a forklift. In this embodiment, the various devices of the food can palletizing and packaging production line are reasonably arranged, with a high degree of integration, which can significantly improve the overall efficiency of food can palletizing and packaging; and the palletizing robot 6 is a multi-purpose machine, that is, one device can realize the transportation of iron can arrays, padding paper, and top plates, with a high degree of integration, reducing the space occupied by the production line.

In the embodiment, as shown in Figures 1 to 3: the paper pad rack 4 and the top plate rack 5 are arranged on the same side of the stacking section 11; the tank collection and conveying platform 2 is arranged on the other side of the stacking section 11 and is arranged in parallel with the main feeding channel 1; the bottom bracket 3 and the stacking robot 6 are arranged in sequence from the outside to the inside near the outer end of the stacking section 11, and the stacking robot 6 is a hollow base, and the bottom bracket passes through the hollow base of the stacking robot 6 and is transported to the stacking section 11. In addition, since the number of times the pad paper is used in stacking is much greater than that of the top plate, the paper pad rack 4 is located closer to the stacking section 11 than the top plate rack 5, which can reduce the movement stroke of the stacking robot 6. In the structure of this embodiment, the outlet of the tank collection and conveying platform 2, the paper pad rack 4, the top plate rack 5, and the bottom bracket 3 are arranged around the stacking robot 6, which provides a guarantee for the stacking robot 6 to realize multiple functions.

In the embodiment, as shown in Figures 4 to 9: the can collection and conveying platform 2 includes a No. 2 frame 21 and a can conveyor belt 22, and the can conveyor belt 22 is provided with a can shifting device 23, a can blocking device 24, and a can sorting device 25 in sequence above the can conveyor belt 22, and adjustable baffles 26 are provided on both sides of the can conveyor belt 22; the can shifting device 23 is used to stagger the iron cans to form an iron can array; the can blocking device 24 is used to select the length of the iron can array and keep the iron cans in a staggered state; the can sorting device 25 is used to accurately locate the iron can array to prepare materials for the transportation of the palletizing robot 6. The can collection and conveying platform 2 in this embodiment, its can shifting device 23, can blocking device 24, and can sorting device 25 cooperate with each other to realize fully automatic can collection and conveying, ensuring unmanned operation. In addition, the adjustable baffle 26 can freely adjust the usable width of the can conveyor belt 22 to suit stacks of different sizes or iron cans of different specifications.

In the embodiment, as shown in Figs. 5 to 7, the can-digging device 23 comprises a plurality of baffles 231 arranged in parallel, and a can-entering channel 232 is formed between two adjacent baffles 231. A driven can-digging turntable 233 is provided at the end of the can-entering channel 232, and a circular arc groove 234 adapted to the iron cans is arranged in the circumferential direction of the can-digging turntable 233. The can-digging turntable 233 in this embodiment can form a staggered array of iron cans; and all the can-digging turntables 233 are synchronously driven by synchronous belts and synchronous pulleys, so as to ensure that the number of iron cans entering and exiting each can-entering channel 232 is uniform, so that the iron can array is stable and consistent, and manual assistance is omitted.

In the embodiment, as shown in FIG8 , the can-blocking device 24 comprises a horizontally arranged rotating shaft 241 perpendicular to the conveying direction of the can conveyor belt 22 and equipped with a drive, a can-blocking top plate 242 is installed on the rotating shaft 241, and staggered can-blocking plates 243 are installed on the can-blocking top plate 34. This embodiment uses pneumatic means to control the lifting and lowering of the can-blocking plates 243, which has good rhythmicity and is easy to realize automatic control.

In the embodiment, as shown in FIG9 : the can sorting device 25 includes a tail baffle 251 and a can plate 252, both of which are movable and equipped with a drive, the tail baffle 251 is arranged at the tail end of the can conveyor belt 22, and the can plate 252 is arranged on both sides of the can conveyor belt 22; the inner side of the tail baffle 251 is provided with uniformly arranged tooth-shaped notches 253 for matching with the staggered iron can array. This embodiment utilizes the tail baffle 251 and the can plate 252 respectively arranged in three directions, and cooperates with the self-movement of the can conveyor belt 22 to achieve accurate positioning of the iron can array, and prepares for the transportation of the palletizing robot 6.

In the embodiment, as shown in Figures 10 to 13: the bottom bracket 3 includes a third frame 31, a conveyor chain 32, a liftable bottom bracket 33, a separation device 34, and a lifting device 35; the conveyor chain 32 is arranged on both sides of the third frame 31 for conveying the bottom bracket; the liftable bottom bracket 33 is arranged at the center of the third frame 31 for supporting the bottom bracket, and the lifting range of the liftable bottom bracket 33 is from lower than the conveyor chain 32 to higher than the conveyor chain 2; the separation device 34 includes a separation member 341 and a separation drive mechanism, the separation members 341 are arranged in pairs on both sides of the bottom bracket, and can be inserted between the gaps of the two bottom brackets, and the separation drive mechanism drives the separation member 341 to move horizontally; the lifting device 35 is installed on the third frame 31, and includes a lifting member 351 and a lifting drive mechanism, the separation device 34 is installed on the lifting member 351, and the lifting drive mechanism drives the lifting member 351 to move vertically. When the present embodiment detects that a base support is needed, the lifting device 35 descends, and the liftable chassis 33 rises at the same time, and the base support is placed on the liftable chassis 33, and the separation device 34 leaves the base support outward, and then the liftable chassis 33 descends to place the base support on the conveyor chain 32, and the separation device 34 is inserted into the gap between the two bottom base supports inward, and then the base supports except the bottom base support are lifted by the lifting device 35, and the base support separation action is completed. The present embodiment has the advantages of simple structure and accurate and reliable action. It can easily transport the stacked base supports to the stacking section 11, and it has strong rhythmicity and is suitable for automated production. The conveyor chain 32 of the present embodiment is at the same height as the main feeding channel 1. After the base support is separated, it is directly transported to the stacking section 11 through the conveyor chain 32 and the hollow base of the stacking robot 6.

In the embodiment, as shown in Figures 10 to 13: the separation drive mechanism includes a separation component mounting plate 342, a No. 1 drive cylinder 343 and a No. 1 guide rod 344, the separation component mounting plate 342 is arranged in parallel with the lifting component 351, the No. 1 drive cylinder 343 is arranged between the separation component mounting plate 342 and the lifting component 351, the No. 1 guide rod 344 is arranged on both sides of the No. 1 drive cylinder 343, and the separation component 341 is installed on the separation component mounting plate 342. The separation drive mechanism of this embodiment adopts pneumatic or hydraulic methods to realize the action, which is convenient for realizing automatic control, and the No. 1 guide rod 344 arranged on both sides of the No. 1 drive cylinder 343 can ensure good movement stability.

In the embodiment, as shown in Figures 10 to 13, the lifting drive mechanism includes a No. 2 driving cylinder 352 and a No. 2 guide rod 353, wherein the No. 2 driving cylinder 352 is arranged between the No. 3 frame 31 and the lifting member 351, and the No. 2 guide rod 353 is arranged on both sides of the No. 2 driving cylinder 352. This embodiment adopts a structure of one No. 2 driving cylinder 352 and two No. 2 guide rods 353 to ensure the stability of the movement.

In the embodiment, as shown in Figures 14 to 16: the paper pad rack 4 and the top plate rack 5 are liftable brackets, the liftable brackets include a fourth frame 41 and a horizontal pallet 42, the horizontal pallet 42 is mounted on the bracket body 41 and can be lifted up and down in the vertical direction, and the horizontal pallet 42 is equipped with a horizontal pallet lifting device 43. The horizontal pallet 42 of this embodiment is used to place pad paper or top plate auxiliary materials, and the lifting device 43 is lifted to achieve the height consistency of the top layer of auxiliary materials, so as to achieve the purpose of reducing the movement stroke of the stacking robot 6.

In the embodiment, as shown in Figures 14 to 16: the horizontal pallet lifting device 43 includes a No. 3 guide rod 431 and a No. 3 drive cylinder 432. The upper ends of the No. 3 guide rod 431 and the No. 3 drive cylinder 432 are installed on the lower bottom surface of the horizontal pallet 42. The lower end of the No. 3 guide rod 431 is plugged and installed in the guide hole on the No. 4 frame 41. The lower end of the No. 3 drive cylinder 432 is fixed. The horizontal pallet lifting device 43 of this embodiment uses a cylinder as a power element, which is convenient for automatic control. The up and down stroke of the No. 3 drive cylinder 432 can be easily controlled by the electromagnetic control valve. Through the PLC program and other methods, the top layer of auxiliary materials on the horizontal pallet 42 can be kept consistent with the action rhythm of the palletizing robot 6. In addition, the cylinder is very clean and suitable for use in fields with hygiene requirements such as food packaging.

In the embodiment, as shown in Figures 14 to 16: the fourth frame 41 is provided with a leveling device 44, and the leveling device 44 is installed around the horizontal support plate 42; the leveling device 4 includes a vertical frame 441, a horizontal frame 442 is provided between every two vertical frames 441, a horizontal push plate 443 is installed on the inner side of the horizontal frame 442, and a fourth guide rod 444 and a fourth drive cylinder 445 are installed between the horizontal push plate 443 and the horizontal frame 442. The leveling device 44 of this embodiment is used to neatly arrange the auxiliary materials above the horizontal support plate 42 to facilitate the automatic grasping of the palletizing robot 6.

In the embodiment, as shown in Fig. 1, Fig. 3, and Fig. 17-19: the stacking robot 6 includes a mounting seat 61, a mechanical arm 62, and a multifunctional grabbing plate 63, wherein the mechanical arm 62 is mounted on the mounting seat 61, and the multifunctional grabbing plate 63 is mounted at the end of the mechanical arm 62; the discharge end of the can collection and conveying platform 2, the padding paper rack 4, and the top plate rack 5 are located within the turning radius of the mechanical arm 62; the multifunctional grabbing plate 63 is used to transport the iron can array, padding paper, and top plate. The mechanical arm 62 in this embodiment can adopt the technical solution disclosed in the patent document with application publication number CN105173760A, or other similar mechanical arm devices.

In the embodiment, as shown in FIGS. 17 to 19 , the multifunctional grabbing plate 63 includes a square plate body 631, the square plate body 631 is provided with an adsorption bottom plate 632, a magnetic disk assembly 633 that can move up and down is provided above the adsorption bottom plate 632, a plurality of vacuum suction cups 634 are arranged on the adsorption bottom plate 632, and at least one pair of oppositely arranged clamping claws 635 are provided on the side wall of the square plate body 631. The adsorption bottom plate 632 and magnetic disk assembly 633 in this embodiment are used to adsorb the iron can array, the vacuum suction cup 634 is used to adsorb the pad paper, and the clamping claw 635 is used to clamp the top plate. The specific operation process is as follows: first, the robot arm 62 drives the square plate 631 to move above the paper pad rack 4, and by opening the vacuum solenoid valve, the vacuum suction cup 634 sucks the paper pad; then the robot arm 62 drives the square plate 631 to move to the can collection and conveying platform 2, and the magnetic disk assembly 633 adsorbs the iron can square array to the adsorption bottom plate 632 with the paper pad, and closes the vacuum suction cup 634 at the same time; when the robot arm 62 moves to the stacking section 11, the magnetic disk assembly 633 rises, and the iron can square array and the paper pad are placed on the bottom bracket on the stacking section 11; finally, the clamp 635 grabs the top plate and places it above the iron can square array. The multifunctional grabbing plate 63 can not only transport the iron can square array, but also transport their respective auxiliary materials, saving workshop space.

In the embodiment, as shown in FIGS. 17 to 19 , the square disk body 631 is also provided with reciprocating can support rods 636, and the clamping claws 635 are mounted on the can support rods 636. In the embodiment, when the disk assembly 633 fixes the iron can, the can support rods 636 play an auxiliary fixing role, so that the iron can will not deviate during the transportation process, and the stacking is ensured to be neat.

In the embodiment, as shown in FIG2 , the stacking lifter 9 includes two left and right conveying chains, which can be raised and lowered, and the forks of a forklift can be accommodated between the two. Through the cooperation of the conveying chains and the forklift, the packaged stack can be placed on the forklift.

In addition, the cable tie baling machine 7 and the wrapping machine 8 in this embodiment can be purchased as finished products on the market, as exemplified in the background technology, and thus will not be described in detail here.

Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to exhaust all implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims (7)

1. A food jar pile up neatly packing production line, its characterized in that: comprising

The main feeding channel (1) is used for conveying iron ladle piles, and is sequentially provided with a stacking section (11), a binding belt packing section (12), a winding section (13) and a pile discharging section (14) along the feeding direction;

the tank collecting and conveying platform (2) is used for orderly and staggered arrangement of the iron tanks to form an iron tank matrix;

the bottom bracket (3) is used for placing the bottom brackets of the iron ladle pile and conveying the separated bottom brackets to the main material conveying channel (1);

A paper backing frame (4) for placing paper backing between each layer of iron cans in the iron can pile;

a roof plate rack (5) for placing the roof of the iron can pile;

a stacking robot (6) for transferring the iron ladle square matrix, the packing paper and the top plate to the stacking section (11) to form the iron ladle pile;

a band packing machine (7) corresponding to the band packing section (12) for band packing;

A winding machine (8) corresponding to the winding section (13) for winding the film;

the paper laying frame (4) and the top plate frame (5) are arranged on the same side of the stacking section (11);

the tank collection conveying platform (2) is arranged on the other side of the stacking section (11) and is arranged in parallel with the main feeding channel (1);

the bottom bracket (3) and the palletizing robot (6) are sequentially arranged at the outer end close to the palletizing section (11) from outside to inside, the palletizing robot (6) is a hollow base, and the bottom bracket passes through the hollow base of the palletizing robot (6) and is then conveyed to the palletizing section (11);

The palletizing robot (6) comprises a mounting seat (61), a mechanical arm (62) and a multifunctional grabbing disc (63), wherein the mechanical arm (62) is mounted on the mounting seat (61), and the multifunctional grabbing disc (63) is mounted at the tail end of the mechanical arm (62);

the discharge end of the tank collection conveying platform (2), the paper packing frame (4) and the top plate frame (5) are positioned in the turning radius of the mechanical arm (62);

The multifunctional grabbing disc (63) is used for transporting the iron ladle square matrix, the packing paper and the top plate;

the multifunctional grabbing disc (63) comprises a square disc body (631), an adsorption bottom plate (632) is arranged on the square disc body (631), a disc assembly (633) capable of moving up and down is arranged above the adsorption bottom plate (632), a plurality of vacuum chucks (634) are arranged on the adsorption bottom plate (632), and at least one pair of clamping jaws (635) which are oppositely arranged are arranged on the side wall of the square disc body (631).

2. The food can palletizing and packaging line of claim 1, wherein: the tank collecting and conveying platform (2) comprises a second rack (21) and a tank conveying belt (22), a tank pulling device (23), a tank blocking device (24) and a tank arranging device (25) are sequentially arranged above the tank conveying belt (22), and adjustable baffle strips (26) are arranged on two sides of the tank conveying belt (22);

The cupping device (23) is used for enabling the iron cans to be arranged in a staggered mode to form an iron can square matrix;

The tank blocking device (24) is used for selecting the length of the iron tank square matrix and keeping the iron tanks in a staggered state;

The tank arranging device (25) is used for accurately positioning the iron tank square matrix and preparing materials for transferring of the stacking robot (6).

3. The food can palletizing packaging line of claim 2, wherein: the cupping device (23) comprises a plurality of baffles (231) which are arranged in parallel, a cupping channel (232) is formed between two adjacent baffles (231), the tail end of the cupping channel (232) is provided with a cupping rotary table (233) with a drive, and circular arc grooves (234) which are matched with an iron can are circumferentially arranged on the cupping rotary table (233).

4. The food can palletizing packaging line of claim 2, wherein: the tank blocking device (24) comprises a rotating shaft (241) which is horizontally arranged and is perpendicular to the conveying direction of the tank conveying belt (22) and is matched with the driving shaft, a tank blocking top plate (242) is arranged on the rotating shaft (241), and tank blocking plates (243) which are arranged in a staggered mode are arranged on the tank blocking top plate (242).

5. The food can palletizing and packaging line of claim 1, wherein:

The bottom bracket (3) comprises a third rack (31), a conveying chain (32), a lifting underframe (33), a separating device (34) and a lifting device (35);

The conveying chains (32) are arranged on two sides of the third rack (31) and are used for conveying the bottom brackets;

the lifting underframe (33) is arranged in the center of the third frame (31) and used for supporting the underframe, and the lifting range of the lifting underframe (33) is from lower than the conveying chain (32) to higher than the conveying chain (32);

The separating device (34) comprises a separating piece (341) and a separating driving mechanism, wherein the separating piece (341) is arranged on two sides of the bottom support in pairs and can be inserted between two bottom support gaps, and the separating driving mechanism drives the separating piece (341) to horizontally move;

the lifting device (35) is arranged on the third frame (31) and comprises a lifting piece (351) and a lifting driving mechanism, the separating device (34) is arranged on the lifting piece (351), and the lifting driving mechanism drives the lifting piece (351) to vertically move.

6. The food can palletizing packaging line of claim 5, wherein: the paper laying frame (4) and the top plate frame (5) are liftable brackets, each liftable bracket comprises a No. four frame (41) and a horizontal supporting plate (42), each horizontal supporting plate (42) is arranged on the corresponding No. four frame (41) and can be lifted up and down along the vertical direction, and each horizontal supporting plate (42) is provided with a horizontal supporting plate lifting device (43).

7. The food can palletizing and packaging line of claim 1, wherein: the stacker crane also comprises a stacker lifting device (9), corresponds to the stacker section (14) and is matched with a forklift to be used for stacking.