Intelligent packaging equipment for pre-prepared dishes

Abstract

The invention discloses an intelligent packaging device for prepared dishes, comprising a conveyor belt, a heat-sealing box, a heat-sealing mechanism, a detection box and a sealing effect detection mechanism. The sealing effect detection mechanism comprises an electric push rod, an arc plate, a clamping mechanism, a hydraulic rod, a lifting plate, an electric turntable, a rotating plate, a sleeve, a tension sensor, a tension spring, a force-bearing rod, a cylinder, a clamping claw and a main control unit. The packaging box heat-sealed by the heat-sealing mechanism can be conveyed to the detection box for sealing effect detection. After the packaging box is fixed, the hydraulic rod drives the clamping claw to descend and clamp the edge of the top sealing cover, and then the hydraulic rod drives the clamping claw to rise so that the tension spring is stretched. The sealing effect of different positions of the top sealing cover is judged by the data collected by the tension sensor, and the clamping claw can also clamp the handle of the top sealing cover. The hydraulic rod drives the clamping claw to rise so that the top sealing cover is torn open, thereby detecting the tearability of the top sealing cover. The parameters of the heat-sealing mechanism can be adjusted in time according to the detection result to ensure the sealing effect.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, and in particular to intelligent packaging equipment for pre-prepared dishes. Background Art

[0002] Pre-prepared meals refer to dishes that can be eaten in a short time by simply heating after pre-treatment, processing and packaging. With the acceleration of the pace of life and the improvement of people's living standards, pre-prepared meals are becoming more and more popular in the market due to their convenience, diversity and nutritional value. The packaging of pre-prepared meals is an important link in their production process. If the packaging is not good, it will cause food safety problems and affect the sales of goods. At present, the packaging of pre-prepared meals is divided into bagged and boxed (barreled). Among them, boxed pre-prepared meals can be eaten directly after heating, and no additional tableware is needed. Compared with bagged ones, boxed pre-prepared meals are more convenient. The prepared meal packaging box generally consists of a box body and a top cover. After placing the prepared meal in the box body, the top cover is sealed on the top of the box body. When eating, the entire packaging box can be heated first and then the top cover can be torn off for eating, or the top cover can be torn off and then heated. In either case, the top cover needs to be torn off. However, some current packaging equipment for boxed prepared meals does not test the tearability of the top cover after sealing it to the box body. With the long-term use of the packaging equipment, its sealing ability changes, resulting in problems such as over-sealing or under-sealing of the top cover, which affects the opening of the box by the eater and causes food safety accidents. Summary of the invention

[0003] In view of this, the present invention proposes an intelligent packaging device for pre-prepared dishes, which can package boxed pre-prepared dishes with a top cover and regularly detect the sealing effect of the top cover so as to adjust the sealing of the top cover in time.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A kind of intelligent packaging equipment for pre-prepared dishes, comprising a conveyor belt, a heat sealing box, a heat sealing mechanism, a detection box and a sealing effect detection mechanism, the heat sealing box and the detection box are open on both sides, the conveyor belt passes through the heat sealing box and the detection box in sequence, the heat sealing mechanism is arranged in the heat sealing box, and is used to heat-seal the top cover on the packaging box; the sealing effect detection mechanism is arranged in the detection box, and comprises an electric push rod, an arc plate, a clamping mechanism, a hydraulic rod, a lifting plate, an electric turntable, a rotating plate, a sleeve, a tension sensor, a tension spring, a force rod, a cylinder, a clamping claw and a main control unit, the electric push rod is relatively arranged on the inner side wall of the detection box, the output shaft of the electric push rod is connected to the convex surface of the arc plate, and the concave surface of the arc plate is relatively The arrangement comprises: the clamping mechanism is arranged on the concave surface of the arc plate, the hydraulic rod is arranged on the inner top surface of the detection box, the output shaft of which is connected with the top surface of the lifting plate, the electric turntable is arranged on the bottom surface of the lifting plate, the rotating surface of which is connected with the top surface of the rotating plate, the sleeve is arranged on the bottom surface of the rotating plate, the tension sensor is arranged on the inner top surface of the sleeve, the tension spring is located in the sleeve, the top end of which is connected with the tension sensor, the top end of the force-bearing rod extends into the sleeve and is connected with the bottom end of the tension spring, and the bottom end is connected with the top surface of the cylinder, the cylinder output shaft is connected with the clamping claw, and the main control unit is arranged on the inner side wall of the detection box, and is electrically connected with the electric push rod, the clamping mechanism, the hydraulic rod, the electric turntable, the tension sensor and the cylinder respectively.

[0006] Preferably, the heat sealing mechanism comprises an electric lifting platform and a heat sealing plate, and the electric lifting platform is arranged on the top surface of the heat sealing box and connected to the top surface of the heat sealing plate.

[0007] Preferably, the sealing effect detection mechanism further includes an anti-slip protrusion, and the anti-slip protrusion is arranged at the end of the clamping jaw.

[0008] Preferably, the sealing effect detection mechanism further comprises a transmitting tube and a receiving tube, the transmitting tube and the receiving tube are arranged at the ends of the clamping jaws and are arranged opposite to each other, and the main control unit is electrically connected to the transmitting tube and the receiving tube respectively.

[0009] Preferably, the clamping mechanism includes an air pump, an airbag and an air pipeline, the airbag is arranged on the concave surface of the arc plate, the air pump is arranged on the convex surface of the arc plate, the air pipeline connects the air pump and the airbag, and the main control unit is electrically connected to the air pump.

[0010] Preferably, the clamping mechanism further includes an air venting pipe and an air valve, the air venting pipe is connected to the gas pipeline, the air valve is arranged on the air venting pipe, and the main control unit is electrically connected to the air valve.

[0011] Preferably, the sealing effect detection mechanism further includes an alarm, the alarm is arranged on the top surface of the detection box, and the main control unit is electrically connected to the alarm.

[0012] Preferably, the sealing effect detection mechanism also includes an electric slide and a supporting plate. The electric slide is arranged on the top surface of the detection box, and its mover is connected to the top surface of the supporting plate. The hydraulic rod is arranged on the bottom surface of the supporting plate, and the main control unit is electrically connected to the electric slide.

[0013] Preferably, the sealing effect detection mechanism also includes an electromagnet, a metal block, a knocking head and a reset spring, the electromagnet is arranged on the bottom surface of the rotating plate, the metal block is located below the electromagnet, the reset spring connects the top surface of the metal block and the bottom surface of the rotating plate, the knocking head is arranged on the bottom surface of the metal block, and the main control unit is electrically connected to the electromagnet.

[0014] Preferably, the sealing effect detection mechanism further comprises a guide rod, a through hole is provided on the rotating plate, the bottom end of the guide rod is connected to the top surface of the metal block, and the top end thereof passes through the through hole.

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

[0016] The present invention provides an intelligent packaging device for pre-prepared dishes. After a top cover is placed on a packaging box with pre-prepared dishes, the device is conveyed by a conveyor belt. The packaging box is conveyed to a heat-sealing box, and the top cover is sealed by a heat-sealing mechanism. Then, the packaged packaging box is conveyed through a detection box. The detection mechanism is controlled by a program to periodically detect the sealing effect of the top cover on the top of the packaging box transported in the detection box. After the packaging box is clamped and fixed by a clamping mechanism, a clamping claw is driven by a cylinder to clamp and fix the edge of the top cover. Driven by a hydraulic rod, a tension sensor can be raised to stretch a tension spring. Whether the top cover is completely sealed can be judged by tension data collected by the tension sensor. When the clamping claw grabs the handle of the top cover, the top cover can be torn off the packaging box by driving the clamping claw to rise. The tearability of the top cover can be judged by the change of tension data collected by the tension sensor during the tearing process. If there is a difference in the sealing effect of the top cover, the heat-sealing mechanism can be adjusted in time to ensure the effect of pre-prepared dish packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a pre-prepared meal intelligent packaging device of the present invention;

[0019] Figure 2It is a schematic diagram of the connection structure between the heat sealing mechanism and the heat sealing box of a pre-prepared food intelligent packaging device of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection structure between a sealing effect detection mechanism and a detection box of a pre-prepared food intelligent packaging device of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection structure of the clamping claws and the metal block and the rotating plate of the intelligent packaging device for pre-prepared dishes of the present invention;

[0022] Figure 5 It is a schematic diagram of the connection structure between the clamping mechanism and the heat sealing box of a pre-prepared food intelligent packaging device of the present invention;

[0023] In the figure, 1. conveyor belt; 2. heat sealing box; 3. detection box; 4. electric push rod; 5. arc plate; 6. hydraulic rod; 7. lifting plate; 8. electric turntable; 9. rotating plate; 10. sleeve; 11. tension sensor; 12. tension spring; 13. force rod; 14. cylinder; 15. clamping claw; 16. main control unit; 17. electric lifting platform; 18. heat sealing plate; 19. anti-slip protrusion; 20. transmitting tube; 21. receiving tube; 22. air pump; 23. air bag; 24. gas pipeline; 25. deflation pipe; 26. gas valve; 27. alarm; 28. electric slide; 29. ​​bearing plate; 30. electromagnet; 31. metal block; 32. knocking head; 33. reset spring; 34. guide rod; 35. through hole. DETAILED DESCRIPTION

[0024] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0025] See also Figures 1 to 5The present invention provides an intelligent packaging device for pre-prepared dishes, comprising a conveyor belt 1, a heat sealing box 2, a heat sealing mechanism, a detection box 3 and a sealing effect detection mechanism. The heat sealing box 2 and the detection box 3 are open on both sides, and the conveyor belt 1 passes through the heat sealing box 2 and the detection box 3 in sequence. The heat sealing mechanism is arranged in the heat sealing box 2, and is used to heat-seal the top cover on the packaging box; the sealing effect detection mechanism is arranged in the detection box 3, and comprises an electric push rod 4, an arc plate 5, a clamping mechanism, a hydraulic rod 6, a lifting plate 7, an electric turntable 8, a rotating plate 9, a sleeve 10, a tension sensor 11, a tension spring 12, a force rod 13, a cylinder 14, a clamping claw 15 and a main control unit 16. The electric push rod 4 is relatively arranged on the inner side wall of the detection box 3, and its output shaft is connected to the convex surface of the arc plate 5, and the concave surface of the arc plate 5 is relatively arranged The clamping mechanism is arranged on the concave surface of the arc plate 5, the hydraulic rod 6 is arranged on the inner top surface of the detection box 3, and its output shaft is connected to the top surface of the lifting plate 7, the electric turntable 8 is arranged on the bottom surface of the lifting plate 7, and its rotating surface is connected to the top surface of the rotating plate 9, the sleeve 10 is arranged on the bottom surface of the rotating plate 9, the tension sensor 11 is arranged on the inner top surface of the sleeve 10, the tension spring 12 is located in the sleeve 10, and its top end is connected to the tension sensor 11, the top end of the force-bearing rod 13 extends into the sleeve 10 and is connected to the bottom end of the tension spring 12, and its bottom end is connected to the top surface of the cylinder 14, the output shaft of the cylinder 14 is connected to the clamp 15, and the main control unit 16 is arranged on the inner side wall of the detection box 3, and is electrically connected to the electric push rod 4, the clamping mechanism, the hydraulic rod 6, the electric turntable 8, the tension sensor 11 and the cylinder 14 respectively.

[0026] The intelligent packaging equipment for pre-prepared dishes of the present invention is used for packaging boxed pre-prepared dishes. After placing the pre-prepared dishes in the packaging box, the corresponding top cover is placed on the packaging box, and then the packaging box is slowly conveyed by a conveyor belt 1. During the conveying process, the packaging box can be first conveyed to the inside of a heat sealing box 2, and the heat sealing mechanism in the heat sealing box 2 can heat-seal the top cover to the packaging box to realize the packaging of the pre-prepared dishes. Then, the packaged packaging box will be moved to a detection box 3 under the conveyance of the conveyor belt 1. A sealing effect detection mechanism is provided in the detection box 3, which can regularly or quantitatively detect the sealing effect of the top cover of the packaging box conveyed to the detection box 3 to determine whether the top cover is completely sealed. If the sealing effect is not good, the parameters of the heat sealing mechanism can be adjusted in time to ensure the heat sealing effect.

[0027] After the packaging box is transported to the detection box 3, the sealing performance of the top cover can be tested. First, the electric push rod 4 drives the arc plate 5 to move to the middle, and then the packaging box is clamped and fixed by the clamping mechanism. Then the hydraulic rod 6 is started, and the hydraulic rod 6 drives the lifting plate 7 to descend, so that the clamping claw 15 descends to one side of the top cover. After the clamping claw 15 is driven to open and close by the cylinder 14, the edge of the top cover can be clamped, and then the hydraulic rod 6 drives the lifting plate 7 to rise, so that the electric turntable 8 and the rotating plate 9 rise synchronously, and the sleeve 10 and the tension sensor 11 located under the rotating plate 9 rise synchronously. Since the clamping claw 15 is clamped on the edge of the top cover, the tension sensor 11 The tension spring 12 will be pulled and stretched, so that the force-bearing rod 13 moves along the sleeve 10. If the sealing of the top cover is good, when the lifting plate 7 rises a fixed distance, the tension data collected by the tension sensor 11 will be within a certain range. If the sealing of the top cover is poor, when the lifting plate 7 rises a fixed distance, the tension data collected by the tension sensor 11 will be different. Therefore, the sealing condition of the top cover can be judged by the tension data collected by the tension sensor 11, and the electric turntable 8 arranged at the bottom of the lifting plate 7 can drive the rotating plate 9 to rotate, so that the clamping claw 15 can rotate to different positions, that is, the sealing effect of different positions of the top cover can be tested to ensure the accuracy of the test result.

[0028] In addition, a handle is provided at one position of the top cover for people to grab with their fingers and tear it open. After the clamping claw 15 is moved to the handle and clamped, the hydraulic rod 6 can drive the lifting plate 7, the electric turntable 8, the rotating plate 9, the sleeve 10 and the tension sensor 11 to rise, so that the tension spring 12 is stretched. As the tension sensor 11 continues to rise, the tension spring 12 is also stretched, and the tension data collected by the tension sensor 11 will continue to increase. When the top cover is torn open, the tension spring 12 will reset, so that the data collected by the tension sensor 11 will become smaller. The tension data before the data collected by the tension sensor 11 becomes smaller is regarded as the force used to tear the top cover open, so as to evaluate the tearability of the top cover.

[0029] Preferably, the heat sealing mechanism includes an electric lifting platform 17 and a heat sealing plate 18 . The electric lifting platform 17 is arranged on the top surface of the heat sealing box 2 and connected to the top surface of the heat sealing plate 18 .

[0030] After the packaging box with the top cover is conveyed to the heat sealing box 2 by the conveyor belt 1, the electric lifting platform 17 can drive the heat sealing plate 18 to descend. When the heat sealing plate 18 descends, the top cover can be heat-pressed to seal the top cover on the packaging box.

[0031] Preferably, the sealing effect detection mechanism further includes an anti-slip protrusion 19 , and the anti-slip protrusion 19 is arranged at the end of the clamping jaw 15 .

[0032] In order to ensure the accuracy of the tearability test result, when the clamping jaws 15 clamp the handle of the top cover, the anti-slip protrusions 19 can enhance the clamping effect.

[0033] Preferably, the sealing effect detection mechanism further includes a transmitting tube 20 and a receiving tube 21, which are arranged at the ends of the clamping jaw 15 and are arranged opposite to each other, and the main control unit 16 is electrically connected to the transmitting tube 20 and the receiving tube 21 respectively.

[0034] A handle is extended outward at a certain position on the top cover, so the length of the handle extending outward is greater than that of other places. When the clamp 15 moves along the edge of the top cover, the receiving tube 21 will receive the infrared light emitted by the transmitting tube 20 most of the time. When the clamp 15 moves to the handle, due to the long length of the handle, it will block the transmitting tube 20 and the receiving tube 21, cutting off the infrared light, making it impossible for the receiving tube 21 to receive the infrared light. The main control unit 16 will lose the signal sent by the receiving tube 21. At this time, the movement of the clamp 15 can be stopped, and then the clamp 15 is controlled by the cylinder 14 to clamp the handle, and the positioning of the handle is achieved through the transmitting tube 20 and the receiving tube 21.

[0035] Preferably, the clamping mechanism includes an air pump 22, an airbag 23 and an air pipeline 24, the airbag 23 is arranged on the concave surface of the arc plate 5, the air pump 22 is arranged on the convex surface of the arc plate 5, the air pipeline 24 connects the air pump 22 and the airbag 23, and the main control unit 16 is electrically connected to the air pump 22.

[0036] When the packaging box is moved into the detection box 3 and a sealing effect test is required, the electric push rod 4 can push the arc plate 5 to move toward the packaging box so that the airbag 23 on the concave surface contacts the outer wall of the packaging box. At this time, the air pump 22 can be turned on. The air pump 22 can deliver external air to the airbag 23 through the air supply pipe 24. After the airbag 23 is inflated, the packaging box can be clamped and fixed, thereby achieving the tightening of the packaging box, so as to facilitate the stable tearing of the top cover.

[0037] Preferably, the clamping mechanism further includes an air venting pipe 25 and an air valve 26 , the air venting pipe 25 is connected to the gas pipeline 24 , the air valve 26 is arranged on the air venting pipe 25 , and the main control unit 16 is electrically connected to the air valve 26 .

[0038] After the detection is completed, the air valve 26 can be opened, and the air in the airbag 23 can be discharged through the air supply pipe 24 and the air release pipe 25. Then, the electric push rod 4 drives the arc plate 5 to leave the packaging box, and the packaging box can be transported out of the detection box 3.

[0039] Preferably, the sealing effect detection mechanism further includes an alarm 27 , which is disposed on the top surface of the detection box 3 , and the main control unit 16 is electrically connected to the alarm 27 .

[0040] When the sealing performance and tearability of the top cover are poor, the main control unit 16 can control the alarm 27 to sound an alarm, so as to prompt the staff to adjust the parameters of the heat sealing mechanism.

[0041] Preferably, the sealing effect detection mechanism also includes an electric slide 28 and a supporting plate 29. The electric slide 28 is arranged on the top surface of the detection box 3, and its mover is connected to the top surface of the supporting plate 29. The hydraulic rod 6 is arranged on the bottom surface of the supporting plate 29, and the main control unit 16 is electrically connected to the electric slide 28.

[0042] When the top cover is torn open by the upward movement of the clamping jaws 15 , the electric slide 28 can drive the clamping jaws 15 to move in the tearing direction of the top cover through the supporting plate 29 , thereby simulating the oblique upward movement of human hands when tearing, so as to ensure the accuracy of the detection result.

[0043] Preferably, the sealing effect detection mechanism also includes an electromagnet 30, a metal block 31, a knocking head 32 and a reset spring 33. The electromagnet 30 is arranged on the bottom surface of the rotating plate 9, and the metal block 31 is located below the electromagnet 30. The reset spring 33 connects the top surface of the metal block 31 and the bottom surface of the rotating plate 9. The knocking head 32 is arranged on the bottom surface of the metal block 31, and the main control unit 16 is electrically connected to the electromagnet 30.

[0044] Before testing the sealing effect, the packaging box will first move to the bottom of the metal block 31, and then the main control unit 16 can increase the current delivered to the electromagnet 30 to increase the magnetic force of the electromagnet 30, and then the metal block 31 will be magnetically attracted to move the metal block 31 upward, and then the main control unit 16 can reduce the magnetic force delivered to the electromagnet 30. Under the action of the reset spring 33, the metal block 31 can move downward and knock on the top of the packaging box through the knocking head 32. By applying knocks on the top cover, the impact that the packaging box is prone to during transportation can be simulated to verify the sealing of the top cover. When the edge of the top cover is clamped and pulled up later, the accuracy of the test results can be improved.

[0045] Preferably, the sealing effect detection mechanism further includes a guide rod 34 , and a through hole 35 is provided on the rotating plate 9 . The bottom end of the guide rod 34 is connected to the top surface of the metal block 31 , and the top end thereof passes through the through hole 35 .

[0046] When the metal block 31 moves upward due to the magnetic force or moves downward due to the thrust of the return spring 33 , the guide rod 34 can move along the through hole 35 to limit the movement of the metal block 31 and prevent the metal block 31 from shifting.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-prepared food intelligent packaging equipment, characterized in that: It includes a conveyor belt, a heat sealing box, a heat sealing mechanism, a detection box and a sealing effect detection mechanism. The heat sealing box and the detection box are open on both sides. The conveyor belt passes through the heat sealing box and the detection box in sequence. The heat sealing mechanism is arranged in the heat sealing box and is used to heat-seal the top cover on the packaging box; the sealing effect detection mechanism is arranged in the detection box, and includes an electric push rod, an arc plate, a clamping mechanism, a hydraulic rod, a lifting plate, an electric turntable, a rotating plate, a sleeve, a tension sensor, a tension spring, a force rod, a cylinder, a clamping claw and a main control unit. The electric push rod is relatively arranged on the inner side wall of the detection box, and its output shaft is connected to the convex surface of the arc plate. The concave surfaces of the arc plates are relatively arranged. The tightening mechanism is arranged on the concave surface of the arc plate, the hydraulic rod is arranged on the inner top surface of the detection box, and its output shaft is connected to the top surface of the lifting plate, the electric turntable is arranged on the bottom surface of the lifting plate, and its rotating surface is connected to the top surface of the rotating plate, the sleeve is arranged on the bottom surface of the rotating plate, the tension sensor is arranged on the inner top surface of the sleeve, the tension spring is located in the sleeve, and its top end is connected to the tension sensor, the top end of the force-bearing rod extends into the sleeve and is connected to the bottom end of the tension spring, and its bottom end is connected to the top surface of the cylinder, the cylinder output shaft is connected to the clamping claw, the main control unit is arranged on the inner side wall of the detection box, and is electrically connected to the electric push rod, the clamping mechanism, the hydraulic rod, the electric turntable, the tension sensor and the cylinder respectively; The sealing effect detection mechanism also includes a transmitting tube and a receiving tube, which are arranged at the ends of the clamping jaws and are arranged opposite to each other, and the main control unit is electrically connected to the transmitting tube and the receiving tube respectively; The sealing effect detection mechanism also includes an electric slide and a bearing plate, wherein the electric slide is arranged on the top surface of the detection box, the electric slide drives the bearing plate to move, the hydraulic rod is arranged on the bottom surface of the bearing plate, and the main control unit is electrically connected to the electric slide; The sealing effect detection mechanism also includes an electromagnet, a metal block, a knocking head and a reset spring. The electromagnet is arranged on the bottom surface of the rotating plate, the metal block is located below the electromagnet, the reset spring connects the top surface of the metal block and the bottom surface of the rotating plate, the knocking head is arranged on the bottom surface of the metal block, and the main control unit is electrically connected to the electromagnet.

2. The intelligent packaging equipment for pre-prepared dishes according to claim 1, characterized in that: The heat sealing mechanism comprises an electric lifting platform and a heat sealing plate. The electric lifting platform is arranged on the top surface of the heat sealing box and is connected to the top surface of the heat sealing plate.

3. The intelligent packaging equipment for pre-prepared dishes according to claim 1, characterized in that: The sealing effect detection mechanism further comprises an anti-slip protrusion, and the anti-slip protrusion is arranged at the end of the clamping claw.

4. The intelligent packaging equipment for pre-prepared dishes according to claim 1, characterized in that: The clamping mechanism includes an air pump, an air bag and an air pipeline. The air bag is arranged on the concave surface of the arc plate, the air pump is arranged on the convex surface of the arc plate, the air pipeline connects the air pump and the air bag, and the main control unit is electrically connected to the air pump.

5. The intelligent packaging equipment for prepared dishes according to claim 4, characterized in that: The clamping mechanism also includes an air release pipe and an air valve. The air release pipe is connected to the air pipeline. The air valve is arranged on the air release pipe. The main control unit is electrically connected to the air valve.

6. The intelligent packaging equipment for pre-prepared dishes according to claim 1, characterized in that: The sealing effect detection mechanism also includes an alarm, which is arranged on the top surface of the detection box, and the main control unit is electrically connected to the alarm.

7. The intelligent packaging equipment for prepared dishes according to claim 1, characterized in that: The sealing effect detection mechanism also includes a guide rod, the rotating plate is provided with a through hole, the bottom end of the guide rod is connected to the top surface of the metal block, and the top end of the guide rod passes through the through hole.

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