Automatic loading and unloading conveyor line for bowl packaged food

Abstract

The present invention discloses an automatic loading and unloading conveyor line for bowl packaged food, comprising a material sorting line, a reversing tray loading mechanism, a centralized processing line, a material unloading mechanism and an output line. The material sorting line comprises an initial feeding channel and a centralized feeding channel which are sequentially arranged on a first conveyor belt, and a fork conveying mechanism for delivering the bowl packages in the initial feeding channel into each centralized feeding channel is provided between the initial feeding channel and the centralized feeding channel; the bowl packages are automatically sorted, transported, reversed, and continuously supplied with trays and baskets, thereby greatly improving production efficiency.

Description

Technical Field

[0001] The invention relates to a food packaging machine, in particular to an automatic loading and unloading conveyor line for bowl-packaged food. Background Art

[0002] Bowl packaged food refers to food that is pre-packaged or made in a bowl. After being individually packaged, it often needs to undergo other subsequent processing such as disinfection and steaming. These subsequent processing usually requires the individual small packages to be centrally sorted and transported to the corresponding workstations for processing and then repackaging. This includes at least material sorting, framing, turnover, unloading and other operations. Existing equipment cannot complete all of the above operations fully automatically, and more or less manual participation is required. The degree of automation is not high and the processing efficiency is low. Summary of the invention

[0003] The invention overcomes the existing defects and provides an automatic loading and unloading conveyor line for bowl packaged food, which can continuously and automatically complete the operations of material sorting, tray loading, basket loading and unloading, has a high degree of automation, and greatly improves the processing efficiency.

[0004] The present invention is achieved through the following technical solutions:

[0005] The automatic loading and unloading conveyor line for bowl packaged food is characterized in that it includes a material sorting line, a reversing tray loading mechanism, a centralized processing line, a material unloading mechanism and an output line. The material sorting line includes an initial feeding channel and a centralized feeding channel arranged in sequence on a first conveyor belt. The number of channels in the centralized feeding channel is greater than that in the initial feeding channel. A fork conveying mechanism is provided between the initial feeding channel and the centralized feeding channel to deliver the bowl packages in the initial feeding channel into each centralized feeding channel. The reversing tray loading mechanism includes an adsorption steering mechanism for absorbing multiple bowl packages, a tray picking and placing mechanism for grabbing trays, and a stacking tray mechanism. The height-decreasing conveyor table for the disk, the adsorption and steering mechanism and the disk pick-up and placement mechanism are respectively slidably connected to the front and rear sides of the first horizontal slide, and the height-decreasing conveyor table is located below the middle of the first horizontal slide; the centralized processing line is a second conveyor belt with a starting end downstream of the height-decreasing conveyor table, the unloading mechanism includes a height-increasing conveyor table and a bowl pick-up and placement mechanism, the bowl pick-up and placement mechanism slides horizontally on the second horizontal slide, the height-increasing conveyor table is downstream of the second conveyor belt and located below the second horizontal slide, and the output line is a third conveyor belt with a starting end located below the second horizontal slide.

[0006] A further improvement scheme of the present invention is that the fork conveying mechanism includes a front fixed frame and a rear fixed frame fixed across the left and right sides of the first conveyor belt, and a distribution channel whose number of channels divided by partition plates is the same as the number of channels of the initial feed channel, and the front end of the distribution channel corresponds one-to-one with the end of the initial feed channel, the front end of all the partition plates of the fork conveying mechanism is fixed on a connecting plate, and the connecting plate is rotatably connected to a fixed shaft vertically arranged on the front fixed frame, and the rear end of all the partition plates of the fork conveying mechanism is fixed on a connecting block, and the connecting block is driven to translate left and right by a row-changing synchronous belt laterally installed on the rear fixed frame.

[0007] A further improvement of the present invention is that the train-changing synchronous belt is driven by a stepper motor mounted on a rear fixing frame, and the connecting block is fixedly connected to an upper belt body of the train-changing synchronous belt.

[0008] A further improvement scheme of the present invention is that first synchronous belts are longitudinally installed on both sides of the first horizontal slide, and the first motor installed on the first horizontal slide drives the first synchronous belts on both sides to move, and the adsorption and steering mechanism includes a first slide, an adsorption plate, and a steering mechanism. The bottom of the first slide is fixedly connected to the first synchronous belt; the adsorption plate is rectangular and is located below the first slide, and the bottom surface of the adsorption plate is provided with a negative pressure hole for adsorption bowl packaging; the steering mechanism includes a turntable horizontally connected to the first slide, the turntable is fixedly connected to the adsorption plate, and a section of continuously arranged racks is opened on the circumference of the turntable, and the steering gear meshing with the rack is driven by a second motor fixed on the first slide, and the rotation stroke of the turntable is 90°.

[0009] A further improvement of the present invention is that a telescopic cylinder is fixed on the turntable, and a piston rod of the telescopic cylinder vertically passes through the turntable downward and is fixedly connected to the top surface of the adsorption plate.

[0010] A further improvement of the present invention is that the disk pick-up and placement mechanism includes a second slide, a fixed plate and a gripper, the bottom of the second slide is fixedly connected to the first synchronous belt, the fixed plate is located below the second slide and is driven to rise and fall by a third cylinder vertically installed on the second slide, the gripper is an L-shaped side plate symmetrically arranged on the front and rear sides of the fixed plate, and the two L-shaped side plates are driven to synchronously extend and retract by a grabbing cylinder horizontally and symmetrically fixed on the fixed plate; the height-decreasing conveying table is an assembly line lifting platform with conveying rollers arranged on the table top, the conveying rollers are laterally arranged with the conveying direction horizontally to the left, the starting end of the centralized processing line is located on the left side of the height-decreasing conveying table, and the height of the centralized processing line is the same as the lowest position of the height-decreasing conveying table.

[0011] A further improvement of the present invention is that the centralized processing line includes, from upstream to downstream, a degree-turning conveyor belt located on the left side of the height-decreasing conveyor platform, a straight processing conveyor belt consistent with the conveying direction of the first conveyor belt, a degree-turning conveyor belt, a straight conveyor belt conveying materials to the right, a degree-turning conveyor belt, and a reverse conveyor belt in the opposite direction of the conveying direction of the first conveyor belt, and the end of the reverse conveyor belt is located on the rear side of the height-increasing conveyor platform.

[0012] A further improvement scheme of the present invention is that the second horizontal slide is arranged perpendicular to the reverse conveyor belt, the bowl picking and placing mechanism is the adsorption plate that is driven up and down by the telescopic cylinder, and the unloading mechanism also includes the picking and placing plate mechanism. The picking and placing plate mechanism of the unloading mechanism is located on the left side of the adsorption plate and is driven to slide left and right by the second synchronous belt arranged on both sides of the second horizontal slide. The starting end of the output line is located below the right end of the second horizontal slide, and the height of the output line is the same as the highest position of the height increasing conveyor platform. The height increasing conveyor platform is located below the middle part of the second horizontal slide.

[0013] A further improvement of the present invention is that it also includes a pallet recovery line, which is an empty pallet recovery conveyor belt whose starting end is located below the left end of the second horizontal slide, the height of the empty pallet recovery conveyor belt is the same as the highest position of the height-decreasing conveyor platform, and the end of the empty pallet recovery conveyor belt is located below the rear end of the first horizontal slide.

[0014] A further improvement of the present invention is that it also includes a basket turnover line, which is an empty basket recovery conveyor belt with its starting end at the exit side of the height increasing conveyor platform and its ending end at the entrance side of the height decreasing conveyor platform, and the height of the empty basket recovery conveyor belt is the same as the lowest position of the height increasing conveyor platform.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The material sorting line of the present invention distributes materials through a shift fork conveying mechanism. The rear end of the shift fork conveying mechanism swings left and right following the column-changing synchronous belt to switch between different channels of the centralized feeding channel. The material in the initial feeding channel can be distributed to each centralized feeding channel. The front end of the column-separating fork mechanism is rotatably connected to a fixed shaft as a fulcrum for the rear end swing. The entire line collects and arranges materials from front to back and transports them to the next workstation. The reasonable structure plays a role in material sorting.

[0017] The suction cup steering mechanism and the pick-and-place disc mechanism are driven by the first synchronous belt to move forward and backward at the same time. The bowl packaging materials arranged in a row are sucked and transported by the suction disc. The suction disc can suck and put down several bowl packaging at the same time, and the conveying efficiency is high; the telescopic cylinder drives the suction disc up and down. When it moves downward, the negative pressure hole sucks the material, and when it moves upward, the material and the suction disc are lifted up. The cylinder connects the suction disc and the turntable to achieve linkage. The turntable rotates under the rack drive, thereby driving the suction disc to rotate a certain angle. The rack drive can accurately realize the rotation to meet the requirements of different processing positions; the pick-and-place disc mechanism cooperates with the two cylinders The overall lifting and opening and closing of the gripper are realized. The gripper opens and moves downward to reach the position of the pallet, then closes and grabs the pallet, and then drives the pallet upward, and moves horizontally to the middle driven by the first synchronous belt. The gripper moves downward and opens to place the plate on the lifting platform with decreasing height. Then the square plate taking mechanism slides backward while the suction cup steering mechanism moves to the top of the pallet. The adsorption plate moves downward to disconnect the negative pressure, and the bowl package is placed exactly into the pallet. At this time, the lifting platform with decreasing height drops to the height of a pallet, and the two mechanisms work reciprocatingly to continuously stack pallets. After the arranged bowl packaging materials are placed in the pallet, the pallet can be automatically stacked.

[0018] The height-decreasing lifting platform drops to the lowest point and the conveyor rollers on it rotate to transport the stacked materials to the centralized processing line. The centralized processing line is the cooperation of multiple transportation lines, on which multiple workstations such as steaming and disinfection can be set up to process all the stacked materials at one time, and finally transport them in reverse to the unloading mechanism for unloading.

[0019] The suction plate and the square plate mechanism of the unloading mechanism of the present invention are driven in conjunction with each other by the second synchronous belt. The materials stacked in the plate coming from upstream come under the suction plate, and the suction plate moves downward to suck up the bowl packaging materials in the tray and leave the tray, and then moves upward, moves to the right, and moves downward to put the bowl packaging materials onto the output line to realize unloading. While the suction plate moves to the right, the square plate mechanism reaches above the empty tray, grabs the tray and moves to the left to put down the tray for recycling.

[0020] The present invention also provides a pallet recovery line, and the unloading mechanism directly places the empty pallet at the starting point of the pallet recovery line, and then the empty pallet is transported to the bottom of the first horizontal slide, and the empty pallet is provided to the pick-up and place tray mechanism of the reversing tray loading mechanism for grabbing, thereby realizing the circular supply of the pallet; similarly, an additional basket turnover line is provided below the first horizontal slide, and the stacked pallets are directly placed in the basket, and the basket follows the centralized processing line to the unloading mechanism. When all the pallets are taken away, the empty basket directly enters the starting end of the basket turnover line to continue to be used by the upstream, thereby realizing the circular turnover of the basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the present invention.

[0022] Figure 2 It is a three-dimensional diagram of the fork conveying mechanism.

[0023] Figure 3 It is a three-dimensional diagram of the reversing plate loading mechanism.

[0024] Figure 4 It is the side view of the reversing tray loading mechanism.

[0025] Figure 5 It is a top view of the adsorption steering mechanism. DETAILED DESCRIPTION

[0026] like Figure 1 , 2 The automatic loading and unloading conveyor line for bowl packaged food shown in Figures 3, 4 and 5 includes a material sorting line 1, a reversing tray loading mechanism 2, a centralized processing line 3, a unloading mechanism 4 and an output line 5.

[0027] The material sorting line 1 includes an initial feed channel 7 and a centralized feed channel 8 which are sequentially arranged on the first conveyor belt 6. The centralized feed channel 8 has six channels, and the initial feed channel 7 has three channels. A fork conveying mechanism 9 is provided between the initial feed channel 7 and the centralized feed channel 8 to deliver the bowl packages in the initial feed channel to each centralized feed channel. The reversing tray loading mechanism 2 includes an adsorption steering mechanism 10 for absorbing multiple bowl packages, a pick-up and placement tray mechanism 11 for grabbing trays, and a height-decreasing conveying platform 12 for stacking trays. The adsorption steering mechanism 10 and the pick-up and placement tray mechanism 11 are respectively slidably connected to the front and rear sides of the first horizontal slide 13, and the height-decreasing conveying platform 12 is located below the middle of the first horizontal slide 13; the centralized processing line 3 is a second conveyor belt with a starting end downstream of the height-decreasing conveying platform 12. The stacked trays are delivered to the second conveyor belt. A disinfection station is provided on the second conveyor belt to centrally disinfect the delivered materials. The unloading mechanism 4 includes a height-increasing conveying platform 14 and a bowl-picking and placing mechanism 15. The bowl-picking and placing mechanism 15 slides horizontally on the second horizontal slide 16. The height-increasing conveying platform rises once each time the bowl-picking and placing mechanism moves to supply materials to the bowl-picking and placing mechanism. The height-increasing conveying platform 14 is downstream of the second conveyor belt and below the second horizontal slide 16. The output line 5 is a third conveyor belt whose starting end is below the second horizontal slide 16. The taken-out bowl-packaged products are finally transported out of the entire line through the third conveyor belt.

[0028] In this embodiment, the fork conveying mechanism 9 includes a front fixed frame 17, a rear fixed frame 18, and a material distribution channel 19 divided into three channels by a partition plate 20. The front end of the material distribution channel 19 corresponds to the three channels at the end of the initial feed channel 7. The front ends of all the partition plates 20 of the fork conveying mechanism are fixed on a connecting plate 21, and the connecting plate 21 is rotatably connected to a fixed shaft 22 vertically arranged on the front fixed frame 17. The rear ends of all the partition plates 20 of the fork conveying mechanism are fixed on a connecting block 23, and the connecting block 23 is driven to translate left and right by a row-changing synchronous belt 24 installed laterally on the rear fixed frame 18. When the rear end of the fork conveying mechanism translates and swings, it can be connected with each channel of the centralized feed channel to distribute the feed in sequence, and the front end rotates around the fixed axis, and the position of the channel is basically fixed.

[0029] The row-changing synchronous belt 24 is driven by a stepper motor 25 installed on the rear fixed frame 18. The connecting block 23 is fixedly connected to the upper belt body of the row-changing synchronous belt 24. The stepper motor drives the row-changing synchronous belt to move left and right by forward and reverse rotation, and the rear end of the fork conveying mechanism translates left and right to align with different channels of the centralized feeding channel.

[0030] The first synchronous belt 26 is longitudinally installed on both sides of the first horizontal slide 13. The first motor 27 installed on the first horizontal slide 13 drives the first synchronous belt 26 on both sides to move. The adsorption steering mechanism includes a first slide 28, an adsorption plate 29, and a steering mechanism. The bottom of the first slide 28 is fixedly connected to the first synchronous belt 26, and the first slide slides when the synchronous belt moves. In this embodiment, the bowl-packed products at the end of the centralized feeding device are arranged in a 6*7 rectangular array. The adsorption plate 29 is also rectangular and is located below the first slide 28. The bottom surface of the adsorption plate 29 is provided with a negative pressure hole 30 for adsorbing the bowl package. The negative pressure holes are also arranged in a corresponding rectangular array, which can adsorb the products of the entire array.

[0031] The steering mechanism includes a turntable 31 connected to the first slide 28 for horizontal rotation. Four support rollers 301 are evenly distributed on the edge of the turntable 31. The roller shaft of the support roller is vertically arranged and its circumference is formed by a circle of grooves. The edge of the turntable extends into the grooves. The four support rollers 301 are fixed to the first slide through brackets, and the four support rollers hold up the entire turntable. The turntable 31 is fixedly connected to the adsorption disk 29. Specifically, telescopic cylinders 303 are fixed on both sides of the turntable 31. The piston rod of the telescopic cylinder vertically passes through the turntable 31 downward and is fixedly connected to the top surface of the adsorption disk 29. The telescopic rod drives the adsorption disk to move up and down while connecting the adsorption disk. When the turntable rotates, the adsorption disk below rotates with it. Among them, a section of continuously arranged racks 32 is opened on the circumference of the turntable 31. The steering gear 33 meshing with the rack 32 is driven by the second motor fixed on the first slide 28. The rotation stroke of the turntable 31 is 90°. After rotation, the bowl packaging products form a 7*6 matrix.

[0032] The tray pick-up and placement mechanism 11 includes a second slide 34, a fixed plate 35 and a gripper 36. The bottom of the second slide 34 is fixedly connected to the first synchronous belt 26, and the tray pick-up and placement mechanism is linked to the adsorption steering mechanism. The fixed plate 35 is located below the second slide 34 and is driven to rise and fall by the third cylinder 305 vertically mounted on the second slide 34. The gripper 36 is an L-shaped side plate symmetrically arranged on the front and rear sides of the fixed plate 35. The two L-shaped side plates are driven to extend and retract synchronously by the grabbing cylinder 37 horizontally and symmetrically fixed on the fixed plate 35. The grabbing cylinder 37 extends, and then the third cylinder 305 drives the fixed plate to descend to the tray position. The grabbing cylinder 37 retracts the gripper to grab the tray, and then the third cylinder 305 retracts to grab the tray. The first synchronous belt moves to place it on the height-decreasing conveyor, and then the suction cup comes over to place the 7*6 matrix product in the tray. The height-decreasing conveyor platform 12 is a production line lifting platform with conveyor rollers on the tabletop. Each time a tray with bowl packaging is placed, the height-decreasing conveyor platform 12 is lowered a little until it reaches the lowest position, and multiple layers of products to be conveyed are accumulated on it. The conveyor rollers on the height-decreasing conveyor platform 12 are arranged horizontally and the conveying direction is horizontal to the left. The starting end of the centralized processing line 3 is located on the left side of the height-decreasing conveyor platform 12. The height of the centralized processing line 3 is the same as the lowest position of the height-decreasing conveyor platform 12, and the products to be conveyed flow to the centralized processing line 3.

[0033] The centralized processing line 3 includes, from upstream to downstream, a 90-degree turning conveyor belt 40 located on the left side of the height-decreasing conveyor platform, a straight processing conveyor belt 39 consistent with the conveying direction of the first conveyor belt, a 90-degree turning conveyor belt 40, a straight conveyor belt 41 that conveys materials to the right, a 90-degree turning conveyor belt 40, and a reverse conveyor belt 42 opposite to the conveying direction of the first conveyor belt, wherein the end of the reverse conveyor belt 42 is located on the rear side of the height-increasing conveyor platform 14, wherein a disinfection device 309 is provided on the straight processing conveyor belt 39, and when the material is conveyed to 309, the straight processing conveyor belt 39 stops conveying and the product is disinfected, and this station can be replaced by other post-processing stations, and the products finally flowing out of the centralized processing line are arranged in a 6*7 matrix.

[0034] The second horizontal slide 16 is arranged perpendicular to the reverse conveyor belt 42. The bowl picking and placing mechanism is the suction plate 29 driven up and down by the telescopic cylinder. The suction plate 29 here has the same structure as the suction plate in the upstream. Because the array of products coming over has become 6*7, the orientation is rotated 90 degrees to absorb the bowl packaging with an array of 6*7. The unloading mechanism also includes a pick-up and place plate mechanism 11. The pick-up and place plate mechanism of the unloading mechanism is located on the left side of the suction plate 29 and is driven to slide left and right by the second synchronous belt 43 arranged on both sides of the second horizontal slide 16. The pick-up and place plate mechanism 11 here is similarly rotated 90 degrees. The structure and action are the same as those in the upstream, and the linkage mode is consistent with that in the upstream. The starting end of the output line 5 is located below the right end of the second horizontal slide 16. The height of the output line 5 is the same as the highest position of the height increasing conveyor platform 14. The height increasing conveyor platform 14 is located below the middle of the second horizontal slide 16. The bowl packaging products taken out are directly placed on the output line 5 and flow out of the production line. The height increasing conveyor platform 14 rises once every time a tray is taken out until the tray is completely taken out and then reset.

[0035] It also includes a pallet recovery line 44, which is an empty pallet recovery conveyor belt with its starting end located below the left end of the second horizontal slide 16. The height of the empty pallet recovery conveyor belt is the same as the highest position of the height-decreasing conveyor platform 12, and the end of the empty pallet recovery conveyor belt is located below the rear end of the first horizontal slide 13. The empty pallet taken out from the previous workstation is placed on the pallet recovery line 44 and supplied to the pick-and-place pallet mechanism 11 at the adsorption steering mechanism for grabbing, thereby realizing continuous circulation supply.

[0036] It also includes a basket turnover line 45, which is an empty basket recovery conveyor belt with its starting end at the exit side of the height increasing conveyor platform 14 and its end at the entrance side of the height decreasing conveyor platform 12. The height of the empty basket recovery conveyor belt is the same as the lowest position of the height increasing conveyor platform. Initially, an empty basket is placed at the end of the basket turnover line 45, and then the empty basket is sent to the height decreasing conveyor platform to hold the stacked products, and then passes through the centralized processing line to the height increasing conveyor platform. After the products and pallets are completely taken out, the height increasing conveyor platform is reset to the lowest point, and the empty basket is transported to the starting end of the basket turnover line 4 and then sent to the production line for cyclic supply. The height increasing conveyor platform and the height decreasing conveyor platform are assembly line operation lifting platforms purchased from Jinchuang Machinery, which can meet the effect of realizing this solution.

Claims

1. Automatic loading and unloading conveyor line for bowl packaged food, characterized by: The invention comprises a material sorting line (1), a reversing tray loading mechanism (2), a centralized processing line (3), a material unloading mechanism (4) and an output line (5), wherein the material sorting line (1) comprises an initial feed channel (7) and a centralized feed channel (8) which are sequentially arranged on a first conveyor belt (6), wherein the number of channels of the centralized feed channel (8) is greater than the number of channels of the initial feed channel (7), and a fork conveying mechanism (9) is provided between the initial feed channel (7) and the centralized feed channel (8) for conveying bowl packages in the initial feed channel into each centralized feed channel; the reversing tray loading mechanism (2) comprises an adsorption steering mechanism (10) for sucking a plurality of bowl packages, a tray pick-up and placement mechanism (11) for grabbing trays, and a height decreasing conveying platform (12) for stacking trays, wherein the adsorption steering mechanism (10), the tray pick-up and placement mechanism (11) for grabbing trays, and a conveying platform (12) for stacking trays in decreasing height. The tray mechanism (11) is slidably connected to the front and rear sides of the first horizontal slide (13), respectively, and the height-decreasing conveyor platform (12) is located below the middle of the first horizontal slide (13); the centralized processing line (3) is a second conveyor belt whose starting end is downstream of the height-decreasing conveyor platform (12), and the stacked trays are sent to the second conveyor belt, and a disinfection station is provided on the second conveyor belt; the unloading mechanism (4) includes a height-increasing conveyor platform (14) and a bowl-pickup and placement mechanism (15), and the bowl-pickup and placement mechanism (15) slides horizontally on the second horizontal slide (16); the height-increasing conveyor platform (14) is downstream of the second conveyor belt and located below the second horizontal slide (16); and the output line (5) is a third conveyor belt whose starting end is located below the second horizontal slide (16); First synchronous belts (26) are longitudinally installed on both sides of the first horizontal slide (13); a first motor (27) installed on the first horizontal slide (13) drives the first synchronous belts (26) on both sides to move; the adsorption steering mechanism comprises a first slide (28), an adsorption plate (29), and a steering mechanism; the bottom of the first slide (28) is fixedly connected to the first synchronous belt (26); the adsorption plate (29) is rectangular and is located below the first slide (28); the bottom surface of the adsorption plate (29) is provided with a negative pressure hole (30) for adsorbing bowl packaging; the steering mechanism comprises a turntable (31) horizontally rotatably connected to the first slide (28); the turntable (31) is fixedly connected to the adsorption plate (29); a section of continuously arranged racks (32) is opened on the circumference of the turntable (31); a steering gear (33) meshing with the racks (32) is driven by a second motor fixed to the first slide (28); the rotation stroke of the turntable (31) is 90°.

2. The automatic loading and unloading conveyor line for bowl packaged food according to claim 1 is characterized by: The shift fork conveying mechanism (9) comprises a front fixing frame (17) fixed across the left and right frames of the first conveyor belt, a rear fixing frame (18), and a material distribution channel (19) divided by a partition plate (20) and having the same number of channels as the initial feed channel, wherein the front end of the material distribution channel (19) corresponds to the end of the initial feed channel (7) in a one-to-one manner, the front ends of all the partition plates (20) of the shift fork conveying mechanism are fixed on a connecting plate (21), the connecting plate (21) is rotatably connected to a fixed shaft (22) vertically arranged on the front fixing frame (17), the rear ends of all the partition plates (20) of the shift fork conveying mechanism are fixed on a connecting block (23), and the connecting block (23) is driven to translate left and right by a row-changing synchronous belt (24) laterally mounted on the rear fixing frame (18).

3. The automatic loading and unloading conveyor line for bowl packaged food according to claim 2 is characterized by: The row-changing synchronous belt (24) is driven by a stepping motor (25) mounted on the rear fixing frame (18), and the connecting block (23) is fixedly connected to the upper belt body of the row-changing synchronous belt (24).

4. The automatic loading and unloading conveyor line for bowl packaged food according to claim 1 is characterized by: A telescopic cylinder (303) is fixed on the rotating disk (31), and a piston rod of the telescopic cylinder vertically passes through the rotating disk (31) downward and is fixedly connected to the top surface of the adsorption disk (29).

5. The automatic loading and unloading conveyor line for bowl packaged food according to claim 4 is characterized by: The disk pick-up and placement mechanism (11) comprises a second slide (34), a fixed plate (35) and a gripper (36), the bottom of the second slide (34) is fixedly connected to the first synchronous belt (26), the fixed plate (35) is located below the second slide (34) and is driven to rise and fall by a third cylinder (305) vertically mounted on the second slide (34), the gripper (36) is an L-shaped side plate symmetrically arranged on the front and rear sides of the fixed plate (35), and the two L-shaped side plates are driven to synchronously extend and retract by a gripper cylinder (37) horizontally and symmetrically fixed on the fixed plate (35); the height-decreasing conveying platform (12) is an assembly line lifting platform with conveying rollers arranged on the table top, the conveying rollers are arranged horizontally with the conveying direction facing horizontally to the left, the starting end of the centralized processing line (3) is located on the left side of the height-decreasing conveying platform (12), and the height of the centralized processing line (3) is the same as the lowest position of the height-decreasing conveying platform (12).

6. The automatic loading and unloading conveyor line for bowl packaged food according to claim 5 is characterized by: The centralized processing line (3) includes, from upstream to downstream, a 90-degree turning conveyor belt (40) located on the left side of the height decreasing conveyor platform, a straight processing conveyor belt (39) in the same conveying direction as the first conveyor belt, a 90-degree turning conveyor belt (40), a straight conveyor belt (41) for conveying materials to the right, a 90-degree turning conveyor belt (40), and a reverse conveyor belt (42) in the opposite conveying direction to the first conveyor belt, wherein the end of the reverse conveyor belt (42) is located at the rear side of the height increasing conveyor platform (14).

7. The automatic loading and unloading conveyor line for bowl packaged food according to claim 6 is characterized by: The second horizontal slide (16) is arranged perpendicular to the reverse conveyor belt (42); the bowl picking and placing mechanism is the adsorption plate (29) driven by a telescopic cylinder to move up and down; the unloading mechanism also includes the pick-up and placement plate mechanism (11); the pick-up and placement plate mechanism of the unloading mechanism is located on the left side of the adsorption plate (29) and is driven to slide left and right by a second synchronous belt (43) arranged on both sides of the second horizontal slide (16); the starting end of the output line (5) is located below the right end of the second horizontal slide (16); the height of the output line (5) is the same as the highest position of the height-increasing conveyor platform (14); and the height-increasing conveyor platform (14) is located below the middle of the second horizontal slide (16).

8. The automatic loading and unloading conveyor line for bowl packaged food according to claim 7 is characterized by: It also includes a pallet recovery line (44), which is an empty pallet recovery conveyor belt with a starting end located below the left end of the second horizontal slide (16), the height of the empty pallet recovery conveyor belt is the same as the highest position of the height-decreasing conveyor platform (12), and the end of the empty pallet recovery conveyor belt is located below the rear end of the first horizontal slide (13).

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