Automatic hemming and forming device for food tray and working method of automatic hemming and forming device

Abstract

The invention relates to a food tray automatic hemming forming device and a working method thereof, the food tray automatic hemming forming device comprises a processing table of which the surface is fixedly provided with four lower die holders arranged in an annular array, and further comprises feeding mechanisms which are respectively arranged on the side edges of the processing table and are used for feeding food trays; the heating mechanism is used for preheating the food tray; the hemming mechanism is used for carrying out mold pressing and hemming forming on the food tray; the output mechanism is used for outputting the food trays; the invention relates to the technical field of hemming forming devices. According to the automatic curling and forming device for the food tray and the working method of the automatic curling and forming device, through circulating rotation of multiple stations, multiple working procedures of feeding, heating, curling and shaping and discharging can be rapidly completed, curling processing can be rapidly conducted on the food tray, and the quality of the formed food tray is better.

Description

Technical Field

[0001] The invention relates to the technical field of curling forming devices, in particular to an automatic curling forming device for a food tray and a working method thereof. Background Art

[0002] In the processing of food trays, the opening edges of the food trays are usually curled to enhance the strength of the food trays. In order to improve the efficiency of curling, food tray curling machines are currently used for curling. Curling has the following advantages:

[0003] (1) Curling can prevent the plastic wrap from being cut by the edge of the box when it is wrapped.

[0004] (2) The curled edge can prevent the edge of the box from scratching the skin during use.

[0005] (3) Curling can increase product strength and prevent deformation.

[0006] However, when the existing curling forming device is loading during processing, the food trays are stacked together, and then a single food tray is sucked by the suction cup for processing each time. During the sucking process, it is easy to suck two food trays at a time, or the food trays are not sucked into place and fall off, which affects the processing efficiency. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides an automatic edge curling and forming device for a food tray and a working method thereof, which solve the above-mentioned problems.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic curling and forming device for food trays, comprising a processing table with four lower die seats arranged in an annular array fixed on the surface, and also comprising a feeding mechanism respectively arranged on the side of the processing table for feeding food trays;

[0009] A heating mechanism for preheating food trays;

[0010] A crimping mechanism for molding and crimping food trays;

[0011] An output mechanism for outputting food trays;

[0012] The processing table is driven to rotate by a motor, and the feeding mechanism is arranged at the 0 degree position of the processing table, including a feeding table for stacking food trays and a rotating cylinder fixed to the side of the feeding table, the piston rod of the rotating cylinder is fixedly connected to the telescopic cylinder through a connecting piece, and the ends of the piston rod ends of the telescopic cylinder are respectively fixedly connected to a suction nozzle and a top block connected to an external vacuum pump for adsorbing the food tray, the inner cavity of the feeding table is slidably connected to a push plate located behind the food tray and driven by a cylinder or a servo motor screw combination to drive the movement of the food tray, the inner cavity of the feeding table is slidably connected to a baffle through a movable groove, the lower part of the baffle is fixedly connected to a push block located in front of the feeding table, the surface of the baffle located below the feeding table is fixedly connected to a reset spring fixedly connected to the bottom of the feeding table, and one side of the push block is provided with an inclined surface abutting against the surface of the top block;

[0013] The inner cavity of the feed table is provided with a separation mechanism for separating the food trays. When in use, a large number of food trays are stacked together and then placed laterally above the feed table. At this time, the push plate is driven by the motor to move, and the push plate moves to push the food tray to move to one side of the baffle plate. At this time, the food tray is limited between the baffle plate and the push plate. At this time, the side edge of the front food tray coincides with the rotation trajectory of the toggle plate, and the second and subsequent food trays are located above the negative pressure suction plate. At this time, the negative pressure suction plate applies suction to the food tray at the rear. At this time, the rotation of the motor drives the toggle plate to rotate toward the first food tray, toggle its side to make it move forward, and at this time the second food tray is adsorbed by the negative pressure suction plate. At this time, the two food trays are separated, and then the rotating cylinder drives the telescopic cylinder to rotate, driving the suction nozzle to move toward the food tray The tray is on one side, and then the telescopic cylinder drives the suction nozzle and the top block to move toward the food tray. The top block abuts against the inclined surface of the push block surface and presses the push block downward. The push block drives the baffle to move downward in the movable groove and loses the limit on the food tray. At this time, the suction nozzle adsorbs the food tray, and then the telescopic cylinder drives the suction nozzle and the top block to retract. At this time, the baffle is reset under the drive of the reset spring, and the food tray continues to be limited, which can effectively separate the loaded food tray and effectively prevent the two food trays from sticking together without affecting the normal material taking. The separation effect is good, and the structure is simple and easy to use. It can automatically position, and the rotating cylinder rotates to drive the telescopic cylinder to reset, and then the telescopic cylinder descends, and the food tray is placed on the lower die seat for positioning. The processing table rotates 90 degrees, switches a lower die seat, and then repeats the above operations for a continuous cycle.

[0014] As a further solution of the present invention: the heating mechanism includes a heating plate arranged at 90 degrees to the processing table and driven to rise and fall by a cylinder or a servo motor screw combination. The bottom of the heating plate is provided with an inner groove adapted to the lower die base. The rotation of the processing table drives the lower die base to move under the heating plate, and then the cylinder drives the heating plate to descend. The inner groove covers the food tray on the lower die base to heat the food tray. After heating is completed, the cylinder drives the heating plate to rise.

[0015] As a further solution of the present invention: the curling mechanism includes a support frame arranged 180 degrees above the processing table, the top of the support frame is fixedly connected to a downward pressure cylinder, the piston end of the downward pressure cylinder is fixedly connected to a downward pressure plate, the bottom of the lower pressure plate is fixedly connected to an upper mold base, the upper mold base and the lower mold base are combined to form a forming mold for curling the food tray, the inner cavity of the upper mold base is provided with a curling forming groove, the heated food tray moves to the bottom of the upper mold base through the lower mold base, and then the downward pressure cylinder drives the lower pressure plate to move downward, driving the upper mold base and the lower mold base to close the mold to curl the food tray, and after molding is completed, the upper mold base rises.

[0016] As a further solution of the present invention: the output mechanism includes a curling forming groove arranged at 270 degrees on the processing table. The curling forming groove is a crawler-type lifting manipulator with a negative pressure suction cup. The lower mold seat drives the curled food tray to rotate to the bottom of the curling forming groove. After the curling forming groove descends and grabs it, it is output to complete the discharge.

[0017] As a further solution of the present invention: the separation mechanism includes an inner groove opened on the side of the feeding table and a negative pressure suction plate located below the stacked food trays on the feeding table and connected to the negative pressure mechanism; the inner cavity of the inner groove is rotatably connected to a toggle plate driven by a motor, and the negative pressure suction plate is arranged in front of the toggle plate.

[0018] As a further solution of the present invention: the push plate is driven by a stepper motor, and can move forward a distance of a food tray each time through the stepper motor, so that the food trays can be loaded one by one.

[0019] As a further solution of the present invention: two return springs are provided and symmetrically arranged below the baffle. Through the arrangement of the two return springs, when the top block is reset, the baffle can be quickly driven to rise upward and move to the top of the movable groove to limit the food tray and prevent offside.

[0020] The present invention also discloses a working method of the automatic curling forming device for a food tray, comprising the following steps:

[0021] Step 1: stack a large number of food trays together and place them sideways on the feeding table. At this time, the push plate is driven by the motor to move. The push plate pushes the food trays to one side of the baffle. At this time, the food trays are limited between the baffle and the push plate.

[0022] Step 2: The negative pressure suction plate applies suction to the food tray at the rear. At this time, the motor rotates to drive the toggle plate to rotate toward the first food tray, toggle its side to make it move forward, and at this time, the second food tray is adsorbed by the negative pressure suction plate, and the two food trays are separated;

[0023] Step 3: The rotating cylinder drives the telescopic cylinder to rotate, driving the suction nozzle toward one side of the food tray, and then the telescopic cylinder drives the suction nozzle and the top block to move toward the food tray. The top block abuts against the inclined surface of the push block surface, pressing the push block downward, and the push block drives the baffle to move downward in the movable groove, losing the limit on the food tray. At this time, the suction nozzle adsorbs the food tray, and the rotating cylinder rotates to drive the telescopic cylinder to reset, and then the telescopic cylinder descends, placing the food tray on the lower die seat for positioning, and the processing table rotates 90 degrees to switch a lower die seat;

[0024] Step 4: The processing table rotates to drive the lower die base to move under the heating plate, and then the cylinder drives the heating plate to descend, and the inner groove covers the food tray on the lower die base to heat the food tray. After heating, the cylinder drives the heating plate to rise;

[0025] Step 5: The heated food tray moves to the bottom of the upper die seat through the lower die seat, and then the lower pressing cylinder drives the lower pressing plate to move downward, driving the upper die seat to close the mold with the lower die seat to curl the food tray. After the molding is completed, the upper die seat rises;

[0026] Step 6: The lower die seat drives the curled food tray to rotate to the bottom of the curling forming groove, and after it descends through the curling forming groove and is grabbed, it is output to complete the discharge.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention can quickly complete multiple processes such as loading, heating, curling and discharging through the cyclic rotation of multiple stations, quickly perform curling processing on food trays, and the formed food trays have better quality.

[0029] 2. The present invention can effectively separate the loaded food trays and effectively prevent the two food trays from sticking together without affecting the normal material collection. The separation effect is good, the structure is simple, the use is convenient, and the positioning can be automatically performed.

[0030] 3. In the present invention, the negative pressure suction plate applies suction to the food tray at the rear. At this time, the motor rotates to drive the toggle plate to rotate toward the first food tray, to toggle its side to make it move forward, and at this time, the second food tray is adsorbed by the negative pressure suction plate, and the two food trays are separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a top view of the structure of the present invention;

[0032] Figure 2 It is a top view of the structure of the processing table of the present invention;

[0033] Figure 3 It is a top view of the structure of the feeding mechanism of the present invention;

[0034] Figure 4 This is a structural front view of the feed table of the present invention;

[0035] Figure 5 For the present invention Figure 3 A partial enlarged view of the middle A;

[0036] Figure 6 For the present invention Figure 3 A partial enlarged view of the middle A;

[0037] Figure 7 It is a structural schematic diagram of the baffle of the present invention;

[0038] Figure 8 It is a structural schematic diagram of the crimping mechanism of the present invention;

[0039] Fig. 9 It is a structural schematic diagram of the upper die base and the lower die base of the present invention;

[0040] Fig.10 It is a structural schematic diagram of the upper die base of the present invention.

[0041] In the figure: 1. Processing table; 2. Feeding table; 3. Rotating cylinder; 4. Pushing plate; 5. Suction nozzle; 6. Telescopic cylinder; 7. Ejector block; 8. Inner groove; 9. Toggle plate; 10. Negative pressure suction plate; 11. Movable groove; 12. Baffle; 13. Pushing block; 14. Inclined surface; 15. Lower die seat; 16. Upper die seat; 17. Curling forming groove; 18. Heating plate; 19. Lower pressure plate; 20. Lower pressure cylinder; 21. Support frame; 22. Curling forming groove; 23. Reset spring. DETAILED DESCRIPTION

[0042] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0043] See also Figure 1-10 , the present invention provides the following two technical solutions: an automatic curling and forming device for food trays, comprising a processing table 1 having four lower die seats 15 arranged in an annular array fixed on the surface, and also comprising a feeding mechanism respectively arranged on the side of the processing table 1 for feeding food trays;

[0044] A heating mechanism for preheating food trays;

[0045] A crimping mechanism for molding and crimping food trays;

[0046] An output mechanism for outputting food trays;

[0047] The processing table 1 is driven to rotate by a motor, and the feeding mechanism is arranged at the 0 degree position of the processing table 1, including a feeding table 2 for stacking food trays and a rotating cylinder 3 fixed on the side of the feeding table 2, the piston rod of the rotating cylinder 3 is fixedly connected to the telescopic cylinder 6 through a connecting piece, and the ends of the piston rod ends of the telescopic cylinder 6 are respectively fixedly connected to a suction nozzle 5 and a top block 7 connected to an external vacuum pump for adsorbing the food tray, the inner cavity of the feeding table 2 is slidably connected to a push plate 4 located behind the food tray and used to drive the movement of the food tray through a cylinder or a servo motor screw combination, the inner cavity of the feeding table 2 is slidably connected to a baffle 12 through a movable groove 11, and a push block 13 located in front of the feeding table 2 is fixedly connected below the baffle 12, and a reset spring 23 fixedly connected to the bottom of the feeding table 2 is fixedly connected to the surface of the baffle 12 located below the feeding table 2, and a slope 14 abutting against the surface of the top block 7 is provided on one side of the push block 13;

[0048] The inner cavity of the feeding table 2 is provided with a separation mechanism for separating the food trays. When in use, a large number of food trays are stacked together and then placed laterally above the feeding table 2. At this time, the pushing plate 4 is driven by the motor to move, and the pushing plate 4 moves to push the food tray to make it move to the side of the baffle 12. At this time, the food tray is limited between the baffle 12 and the pushing plate 4. At this time, the side edge of the front food tray coincides with the rotation trajectory of the toggle plate 9, and the second and subsequent food trays are located above the negative pressure suction plate 10. At this time, the negative pressure suction plate 10 applies suction to the food tray at the rear. At this time, the rotation of the motor drives the toggle plate 9 to rotate toward the first food tray, toggle its side to make it move forward, and at this time the second food tray is adsorbed by the negative pressure suction plate 10. At this time, the two food trays are separated, and then the rotating cylinder 3 drives the telescopic cylinder 6 to rotate, driving the suction nozzle 5 toward one side of the food tray, and then extending The retracting cylinder 6 drives the suction nozzle 5 and the top block 7 to move toward the food tray. The top block 7 abuts against the inclined surface 14 on the surface of the pushing block 13 and presses the pushing block 13 downward. The pushing block 13 drives the baffle 12 to move downward in the movable groove 11 and loses the limit position of the food tray. At this time, the suction nozzle 5 adsorbs the food tray, and then the telescopic cylinder 6 drives the suction nozzle 5 and the top block 7 to retract. At this time, the baffle 12 is reset driven by the reset spring 23 to continue to limit the food tray, which can effectively separate the loaded food tray and effectively prevent the two food trays from sticking together without affecting the normal material taking. The separation effect is good, and the structure is simple and easy to use. It can automatically position, the rotating cylinder 3 rotates, drives the telescopic cylinder 6 to reset, and then the telescopic cylinder 6 descends, and the food tray is placed on the lower die seat 15 for positioning. The processing table 1 rotates 90 degrees, switches a lower die seat 15, and then repeats the above operation, and the cycle continues.

[0049] The heating mechanism includes a heating plate 18 which is arranged at a 190-degree position on the processing table and driven to rise and fall by a cylinder or a servo motor screw combination. An inner groove which is adapted to the lower die base 15 is provided at the bottom of the heating plate 18. The processing table 1 rotates to drive the lower die base 15 to move under the heating plate 18, and then the cylinder drives the heating plate 18 to descend. The inner groove covers the food tray on the lower die base 15 to heat the food tray. After heating, the cylinder drives the heating plate 18 to rise.

[0050] The curling mechanism includes a support frame 21 arranged above the processing table at an angle of 1180 degrees. The top of the support frame 21 is fixedly connected to a downward pressure cylinder 20, and the piston end of the downward pressure cylinder 20 is fixedly connected to a downward pressure plate 19. The bottom of the lower pressure plate 19 is fixedly connected to an upper mold base 16. The upper mold base 16 and the lower mold base 15 are combined to form a forming mold for curling the food tray. The inner cavity of the upper mold base 16 is provided with a curling forming groove 17. The heated food tray moves to the bottom of the upper mold base 16 through the lower mold base 15, and then the downward pressure cylinder 20 drives the lower pressure plate 19 to move downward, driving the upper mold base 16 and the lower mold base 15 to close the mold to curl the food tray. After the molding is completed, the upper mold base 16 rises.

[0051] The output mechanism includes a curling forming groove 22 arranged at a 270-degree position on the processing table. The curling forming groove 22 is a crawler-type lifting manipulator with a negative pressure suction cup. The lower mold base 15 drives the curled food tray to rotate to the bottom of the curling forming groove 22. After the curling forming groove 22 descends and grabs, it is output to complete the discharge.

[0052] The separation mechanism includes an inner groove 8 opened on the side of the feeding table 2 and a negative pressure suction plate 10 located below the stacked food trays on the feeding table 2 and connected to the negative pressure mechanism. The inner cavity of the inner groove 8 is rotatably connected to a toggle plate 9 driven by a motor, and the negative pressure suction plate 10 is arranged in front of the toggle plate 9.

[0053] The push plate 4 is driven by a stepper motor, and can move forward a distance of a food tray each time through the stepper motor, so that the food trays can be loaded one by one.

[0054] There are two return springs 23, and they are symmetrically arranged below the baffle 12. Through the arrangement of the two return springs 23, when the top block 7 is reset, the baffle 12 can be quickly driven to rise upward and move to the top of the movable groove 11 to limit the food tray and prevent it from going offside.

[0055] The present invention also discloses a working method of the automatic curling forming device for a food tray, comprising the following steps:

[0056] Step 1: stack a large number of food trays together and then place them sideways on the feed table 2. At this time, the push plate 4 is driven by the motor to move, and the push plate 4 pushes the food trays to move to the side of the baffle 12. At this time, the food trays are limited between the baffle 12 and the push plate 4;

[0057] Step 2: The negative pressure suction plate 10 applies suction to the food tray at the rear. At this time, the motor rotates to drive the toggle plate 9 to rotate toward the first food tray, toggle its side to make it move forward, and at this time, the second food tray is adsorbed by the negative pressure suction plate 10, and the two food trays are separated;

[0058] Step 3, the rotating cylinder 3 drives the telescopic cylinder 6 to rotate, driving the suction nozzle 5 toward the side of the food tray, and then the telescopic cylinder 6 drives the suction nozzle 5 and the top block 7 to move toward the food tray, the top block 7 abuts against the inclined surface 14 on the surface of the push block 13, pressing the push block 13 downward, and the push block 13 drives the baffle 12 to move downward in the movable groove 11, losing the limit on the food tray. At this time, the suction nozzle 5 adsorbs the food tray, the rotating cylinder 3 rotates, driving the telescopic cylinder 6 to reset, and then the telescopic cylinder 6 descends, placing the food tray on the lower die seat 15 for positioning, the processing table 1 rotates 90 degrees, and a lower die seat 15 is switched;

[0059] Step 4: The processing table 1 rotates to drive the lower die base 15 to move below the heating plate 18, and then the cylinder drives the heating plate 18 to descend, and the inner groove covers the food tray on the lower die base 15 to heat the food tray. After heating, the cylinder drives the heating plate 18 to rise;

[0060] Step 5: The heated food tray moves to the bottom of the upper die seat 16 through the lower die seat 15, and then the lower pressing cylinder 20 drives the lower pressing plate 19 to move downward, driving the upper die seat 16 to close the lower die seat 15 to perform curling molding on the food tray. After molding, the upper die seat 16 rises;

[0061] Step 6: The lower die seat 15 drives the curled food tray to rotate to the bottom of the curling forming groove 22, and after it descends through the curling forming groove 22 and is grabbed, it is output, and the discharge is completed.

[0062] The cylinders used as driving components in the feeding mechanism, heating mechanism and crimping mechanism can be replaced by servo motors and lead screw driving mechanisms. The servo motor drives the lead screw to rotate, driving the moving parts above the lead screw to adjust their positions and drive the components to move.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic curling and forming device for a food tray, comprising a processing table (1) having four lower die seats (15) arranged in an annular array fixed on the surface, characterized in that: It also includes feeding mechanisms respectively arranged on the sides of the processing table (1) for feeding food trays; A heating mechanism for preheating food trays; A crimping mechanism for molding and crimping food trays; An output mechanism for outputting food trays; The processing table (1) is driven to rotate by a motor, and the feeding mechanism is arranged at the 0 degree position of the processing table (1), comprising a feeding table (2) for stacking and placing food trays and a rotating cylinder (3) fixed to the side of the feeding table (2), the piston rod of the rotating cylinder (3) is fixedly connected to a telescopic cylinder (6) through a connecting piece, and the ends of the piston rod of the telescopic cylinder (6) are respectively fixedly connected to a suction nozzle (5) and a top block (7) connected to an external vacuum pump for adsorbing the food tray, and the inner cavity of the feeding table (2) is slidably connected to a through hole (5) for sucking the food tray. A push plate (4) is driven by an air cylinder and is located behind the food tray to drive the food tray to move. The inner cavity of the feed table (2) is slidably connected to a baffle (12) through a movable groove (11). A push block (13) located in front of the feed table (2) is fixedly connected below the baffle (12). A return spring (23) fixedly connected to the bottom of the feed table (2) is fixedly connected to the surface of the baffle (12) located below the feed table (2). One side of the push block (13) is provided with an inclined surface (14) that abuts against the surface of the top block (7); The inner cavity of the feeding table (2) is provided with a separation mechanism for separating food trays.

2. The automatic curling and forming device for food trays according to claim 1, characterized in that: The heating mechanism comprises a heating plate (18) which is arranged at a 90-degree position on the processing table (1) and is driven to rise and fall by a cylinder. The bottom of the heating plate (18) is provided with an inner groove which is matched with the lower die seat (15).

3. The automatic curling and forming device for food trays according to claim 1, characterized in that: The curling mechanism comprises a support frame (21) arranged 180 degrees above the processing table (1); the top of the support frame (21) is fixedly connected to a downward pressure cylinder (20); the piston end of the downward pressure cylinder (20) is fixedly connected to a downward pressure plate (19); the bottom of the downward pressure plate (19) is fixedly connected to an upper die seat (16); the upper die seat (16) and the lower die seat (15) are combined to form a molding die for curling the food tray; the inner cavity of the upper die seat (16) is provided with a curling molding groove (17).

4. The automatic curling and forming device for food trays according to claim 1, characterized in that: The output mechanism comprises a curling forming groove (22) arranged at a 270 degree position on the processing table.

5. The automatic curling and forming device for food trays according to claim 1, characterized in that: The separation mechanism comprises an inner groove (8) opened on the side of the feed table (2) and a negative pressure suction plate (10) located below the stacked food trays on the feed table (2) and connected to the negative pressure mechanism, wherein the inner cavity of the inner groove (8) is rotatably connected to a toggle plate (9) driven by a motor, and the negative pressure suction plate (10) is arranged in front of the toggle plate (9).

6. The automatic curling and forming device for food trays according to claim 1, characterized in that: The push plate (4) is driven by a stepping motor.

7. The automatic curling and forming device for food trays according to claim 1, characterized in that: Two return springs (23) are provided and are symmetrically arranged below the baffle (12).

8. The working method of the automatic curling and forming device for food trays is characterized by: The following steps are involved: Step 1: The stacked food trays are placed sideways on the feed table (2), and the push plate (4) is driven by a motor to move. The push plate (4) pushes the food trays to move to the side of the baffle (12), and the food trays are limited between the baffle (12) and the push plate (4); Step 2: The negative pressure suction plate (10) applies suction to the food tray at the rear, and the motor rotates to drive the toggle plate (9) to rotate toward the first food tray, toggle its side to make it move forward, and the second food tray is sucked by the negative pressure suction plate (10), and the two food trays are separated; Step 3: The rotating cylinder (3) drives the telescopic cylinder (6) to rotate, driving the suction nozzle (5) toward one side of the food tray, and then the telescopic cylinder (6) drives the suction nozzle (5) and the top block (7) to move toward the food tray, and the top block (7) abuts against the inclined surface (14) on the surface of the push block (13), pressing the push block (13) downward, and the push block (13) drives the baffle plate (12) to move downward in the movable groove (11), losing the limit on the food tray. At this time, the suction nozzle (5) adsorbs the food tray, and the rotating cylinder (3) rotates, driving the telescopic cylinder (6) to reset, and then the telescopic cylinder (6) descends, placing the food tray on the lower die seat (15) for positioning, and the processing table (1) rotates 90 degrees to switch a lower die seat (15); Step 4: The processing table (1) rotates to drive the lower die base (15) to move below the heating plate (18), and then the cylinder drives the heating plate (18) to descend, and the inner groove covers the food tray on the lower die base (15) to heat the food tray. After heating, the cylinder drives the heating plate (18) to rise; Step 5: The heated food tray moves through the lower die seat (15) to the bottom of the upper die seat (16), and then the lower pressing cylinder (20) drives the lower pressing plate (19) to move downward, driving the upper die seat (16) to close the mold with the lower die seat (15) to perform curling molding on the food tray. After molding is completed, the upper die seat (16) rises; Step 6: The lower die seat (15) drives the curled food tray to rotate to the bottom of the curling forming groove (22), and after the curling forming groove (22) descends and grabs it, it is output, and the discharge is completed.

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