Automatic cover dialing, residue removing and cleaning line for meal box

Abstract

The application discloses a meal box automatic cover-pushing and residue-removing cleaning line, which comprises a whole machine frame, an integral box conveying line, a cover-pushing conveying line, a cover-pushing mechanism, a clamping mechanism, a box cover negative pressure adsorption conveying line, a cleaning conveying line and an intelligent control system are arranged on the whole machine frame; the integral box conveying line, the cover-pushing conveying line, the cover-pushing mechanism, the clamping mechanism, the box cover negative pressure adsorption conveying line and the cleaning conveying line are controlled to operate by the intelligent control system. The application is characterized in that the clamping mechanism and the automatic cover-pushing mechanism are combined to work, and the cover-pushing mechanism is specially designed, so that reliable full automation of cover-pushing and cleaning of the meal box is realized, the labor input is greatly reduced, and the cleaning efficiency and the cleaning quality are improved. The operation reliability of the cover-pushing mechanism in the application is high, so that the operation reliability of the whole device is high.

Description

Technical Field

[0001] This invention belongs to the field of intelligent cleaning equipment technology, specifically relating to an automatic lid-removing and residue-removing cleaning line for lunch boxes. Background Technology

[0002] Currently, most primary and secondary school students eat school meals delivered by fast food companies. These meals come in standardized, covered containers and are distributed to individuals. After meals, the fast food companies collect the containers, wash them, and recycle them. When collecting the containers, the companies require the lids to be closed for easy stacking. The containers are then collected and centrally cleaned to remove residue. In existing technology, for the covered containers, personnel need to manually open each lid, discard large pieces of food residue, and then place the lid and container separately on an automated washing line. This operation mode consumes a large amount of manpower, has extremely low efficiency, and requires significant human input during the washing process. Therefore, there is a need to develop a fully automated washing device that can open lids and intelligently wash containers, eliminating most of the manual labor, achieving full automation, and improving washing efficiency. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to address the problems of high labor costs and low cleaning efficiency in the existing process of cleaning lidded lunch boxes, and to develop a highly intelligent automatic lid-removing and residue-removing cleaning line for lunch boxes, thereby improving cleaning efficiency.

[0004] Technical Solution: The present invention discloses an automatic lid-removing and residue-removing cleaning line for lunch boxes, comprising a machine frame, wherein the machine frame is equipped with a lunch box conveyor line, a lid-removing conveyor line, a lid-removing mechanism, a clamping mechanism, a lid negative pressure adsorption conveyor line, a cleaning conveyor line, and an intelligent control system; the lunch box conveyor line, the lid-removing conveyor line, the lid-removing mechanism, the clamping mechanism, the lid negative pressure adsorption conveyor line, and the cleaning conveyor line are all controlled by the intelligent control system.

[0005] The whole box conveyor line includes a first conveyor motor and a first conveyor belt. The first conveyor belt is driven by the first conveyor motor, thereby driving the whole box of tableware to be conveyed along the X-axis direction.

[0006] The lid-opening conveyor line includes a second conveyor motor, a second conveyor belt, a first fiber optic sensor switch, a second fiber optic sensor switch, a third fiber optic sensor switch, and a proximity switch. The second conveyor belt is driven by the second conveyor motor. The first and second fiber optic sensor switches are mounted on the frame of the lid-opening conveyor line segment, with the second fiber optic sensor switch located downstream of the first fiber optic sensor switch. The third fiber optic sensor switch is mounted on the lid-opening mechanism and located downstream of the second fiber optic sensor switch. The proximity switch is mounted on the clamping mechanism. The first fiber optic sensor switch is used to sense the presence of a complete tableware box. The complete tableware box first passes the first fiber optic sensor switch and then moves with the second conveyor belt to the second fiber optic sensor switch. At this time, the conveyor line continues to transport the tableware box until the first fiber optic sensor switch senses the next complete tableware box and sends a signal to the intelligent control system. The control system pauses the operation of the whole box conveyor line; when the second fiber optic sensor detects a whole box of tableware, it sends a signal to the intelligent control system, which then controls the second conveyor motor to continue conveying the whole box of tableware along the X-axis to the designated position, i.e., the position of the clamping mechanism; after that, the second conveyor motor stops running, the intelligent control system controls the clamping mechanism to run, the proximity switch light goes out, indicating that the clamping mechanism is in the clamping state, and then the intelligent control system controls the lid-opening mechanism to run, realizing the lid-opening action. The third fiber optic sensor is used to detect the lid-opening action; after the lid-opening action is completed, the intelligent control system controls the clamping mechanism to release the tableware, at which point the proximity switch light comes on, indicating that this round of lid-opening operation is completed, and the intelligent control system controls the second conveyor motor to continue running, conveying the next tableware detected by the first fiber optic sensor to the designated position, and repeating the clamping and lid-opening operation;

[0007] The clamping mechanism includes a clamping frame, a clamping drive assembly, a first clamping assembly, and a second clamping assembly. The clamping frame is fixed to the main frame. The proximity switch is mounted on the clamping frame. The first clamping assembly and the second clamping assembly are fixed to the clamping frame and symmetrically arranged on both sides of the second conveyor belt. The clamping drive assembly drives the first clamping assembly and the second clamping assembly to run towards each other along the Y-axis, clamping the entire box of tableware to be unlidded. After the lid is removed, they run in the opposite direction to release the box.

[0008] The lid-lifting mechanism is located above the clamping mechanism and includes a lid-lifting drive assembly, a first lid-lifting assembly, and a second lid-lifting assembly. The lid-lifting drive assembly is mounted on the machine frame, and the first and second lid-lifting assemblies are symmetrically arranged on both sides of the second conveyor belt. The lid-lifting drive assembly synchronously drives the claws on the first and second lid-lifting assemblies to move upward, lifting the lid of the tableware box clamped by the clamping mechanism. After the lid is lifted, the clamping mechanism releases the tableware box.

[0009] The negative pressure adsorption conveyor line for the lid is located above the lid-removing conveyor line and includes a negative pressure air inlet and a conveyor belt. The negative pressure air inlet is connected to a negative pressure system. The conveyor belt is located below the negative pressure air inlet. The lid lifted by the lid-removing mechanism is quickly adsorbed upward by the negative pressure air inlet and adheres to the conveyor belt. The conveyor belt moves forward under the drive of the drive mechanism, driving the lid forward along the conveyor belt to the entrance end of the cleaning conveyor line. An inclined lid guide plate is provided at the entrance of the cleaning conveyor line. After the lid falls from the conveyor belt, it falls downward along the lid guide plate opening into the cleaning conveyor line.

[0010] After the lid is removed, the box continues to run along the second conveyor belt, and after being flipped over by the flipping mechanism, it falls into the cleaning conveyor line with its opening facing down.

[0011] The cleaning conveyor line is divided into a first-section cleaning conveyor line and a second-section cleaning conveyor line along the X-axis. There is a gap of 7±1cm between the first-section cleaning conveyor line and the second-section cleaning conveyor line, so that food residue falls into the bottom residue collection line through the gap. The second-section cleaning conveyor line can be divided into a lid conveying section and a lunch box conveying section as needed. By setting the conveying direction of the lid negative pressure adsorption conveyor line, the lid falls into the lid conveying section, and the lunch box first falls into the first-section cleaning conveyor line along the second conveyor belt and then enters the lunch box conveying section. A rinsing water pipe is provided below the second-section cleaning conveyor line to rinse the lid and body facing downwards.

[0012] Further, as a preferred embodiment, the first clamping assembly includes a first clamping shaft, a first clamping drive turntable, a pair of push rods, a first clamping guide rail, a first clamping slider, and a first clamping block. The first clamping shaft is arranged along the X-axis and is parallel to the second conveyor belt. The pair of push rods are fixed in relative positions by a fixing block, which is fixed to the first clamping slider on the first clamping guide rail. The first clamping guide rail and the pair of push rods are arranged along the Y-axis and are perpendicular to the second conveyor belt. One end of the first clamping shaft passes through the first clamping drive turntable. The first clamping guide rail is fixed to the outer end by a pair of bearing seats; the first clamping shaft is fixed relative to the first clamping drive turntable; the two sides of the first clamping drive turntable are provided with identical linear grooves, and roller bearings are provided in the linear grooves. The other end of the roller bearings is fixedly connected to one end of the push rod, so that a pair of push rods are symmetrically placed on both sides of the first clamping drive turntable; the other end of the pair of push rods is fixedly connected to the first clamping block; the first clamping drive turntable rotates, the roller bearings rotate along the linear grooves, and drive the first clamping block on the pair of push rods to reciprocate along the Y-axis direction;

[0013] The second clamping assembly includes a second clamping shaft, a second clamping drive turntable, a pair of push rods, a second clamping guide rail, a second clamping slider, and a second clamping block. The second clamping shaft is arranged along the X-axis and parallel to the second conveyor belt. The pair of push rods are fixed in relative position by a fixing block, which is fixed to the second clamping slider on the second clamping guide rail. The second clamping guide rail and the pair of push rods are arranged along the Y-axis and perpendicular to the second conveyor belt. One end of the second clamping shaft passes through the second clamping drive turntable and is fixed to the second clamping slider by a pair of bearing seats. The outer end of the rail; the second clamping shaft is fixed relative to the second clamping drive turntable; the two sides of the second clamping drive turntable are provided with the same linear slide groove, and the linear slide groove is provided with a roller bearing. The other end of the roller bearing is fixedly connected to one end of the push rod, so that a pair of push rods are symmetrically placed on both sides of the second clamping drive turntable; the other end of the pair of push rods is fixedly connected to the second clamping block; the second clamping drive turntable rotates, the roller bearing rotates along the linear slide groove, and drives the second clamping block on the pair of push rods to reciprocate along the Y-axis direction, and the first clamping block and the second clamping block run in opposite directions.

[0014] Furthermore, to improve the clamping effect on the lunch box without causing mechanical damage to the surface of the lunch box, the clamping block is made of elastic material and its working surface has spaced grooves.

[0015] Further, as a preferred embodiment, the clamping drive assembly includes a clamping servo motor, the shaft of which is connected to a first clamping shaft via a conveyor belt; the first clamping shaft is connected to a second clamping shaft via a synchronous conveyor belt to achieve synchronous power transmission; the clamping servo motor drives the first clamping shaft to rotate, thereby driving the rotation of a first clamping drive turntable on the first clamping shaft; as the first clamping drive turntable rotates, the roller bearing slides along a linear groove, driving the first clamping block on the push rod to move back and forth along the Y-axis; the rotation of the first clamping shaft drives the rotation of the second clamping shaft, thereby driving the rotation of a second clamping drive turntable on the second clamping shaft; as the second clamping drive turntable rotates, the roller bearing slides along a linear groove, driving the second clamping block on the push rod to move back and forth along the Y-axis; and the first and second clamping blocks move in opposite directions, realizing the clamping and releasing actions of the first and second clamping blocks on the lunchbox.

[0016] Furthermore, to reliably achieve the lid-opening operation of the lunchbox, the first lid-opening assembly includes a first lid-opening frame, a first upper lid-opening shaft, a first lower lid-opening shaft, and a pair of first lid-opening conveyor belts; both ends of the first upper lid-opening shaft and the first lower lid-opening shaft are respectively fixed to the first lid-opening frame along the X-axis direction by bearing assemblies; one end of the first upper lid-opening shaft is connected to the lid-opening drive assembly, and the other end is equipped with a lid-opening gear synchronous transmission group; a pair of first lid-opening conveyor belts are provided on the first upper lid-opening shaft and the first lower lid-opening shaft; several claws are fixedly installed on the first lid-opening conveyor belts;

[0017] The second cover-shifting assembly includes a second cover-shifting frame, a second upper cover-shifting shaft, a second lower cover-shifting shaft, and a pair of second cover-shifting conveyor belts. Both ends of the second upper and lower cover-shifting shafts are fixed to the second cover-shifting frame along the X-axis via bearing assemblies. The second upper cover-shifting shaft is connected to a cover-shifting gear synchronous transmission group via a synchronous belt. A pair of second cover-shifting conveyor belts are provided on the second upper and lower cover-shifting shafts. Several claws are fixedly installed on the second cover-shifting conveyor belts.

[0018] The cover-pulling drive assembly includes a cover-pulling servo motor, the shaft of which is connected to a first upper cover-pulling shaft. The cover-pulling servo motor drives the first upper cover-pulling shaft to rotate, thereby causing the claws on the first cover-pulling conveyor belt to rotate cyclically along the Z-axis. The cover-pulling gear synchronous transmission group on the first upper cover-pulling shaft operates under the drive of the first upper cover-pulling shaft, thereby driving the rotation of the second upper cover-pulling shaft, thereby causing the claws on the second cover-pulling conveyor belt to rotate cyclically along the Z-axis. The claws near the second conveyor belt are all in an upward running state.

[0019] Spacing plates are evenly distributed on the outer sides of the first and second cover conveyor tracks, and claws are fixedly installed on the spacing plates.

[0020] Furthermore, as a preferred embodiment, the claw is made of an elastic material and has an overall trapezoidal structure that is shorter at the top and longer at the bottom, so that the working surface of the claw is inclined and a protrusion is formed at the bottom to facilitate opening the box lid.

[0021] Furthermore, to accommodate the cleaning of lunch boxes of different sizes, the first and second lid-opening frames are movably mounted on the overall frame, and the relative positions of the first and second lid-opening frames can be adjusted to accommodate lunch boxes of different sizes.

[0022] Furthermore, to reliably achieve synchronous transmission and ensure that the working surfaces of the cover assembly are all in an upward state, the cover gear synchronous transmission group includes a first cover synchronous gear and a second cover synchronous gear. The first cover synchronous gear is mounted on the first upper cover rotating shaft and rotates with the first upper cover rotating shaft. The first cover synchronous gear and the second cover synchronous gear mesh to achieve reverse operation. The second cover synchronous gear is connected to the second upper cover rotating shaft through a synchronous track to achieve power transmission, so that the claws near the second conveyor track are all in an upward running state.

[0023] Furthermore, to minimize wear and tear on the lunchbox, the conveyor belt is a set of parallel flat ropes. A support frame is provided between each parallel flat rope to prevent the flat rope from deforming upwards due to the suction of the wind during the conveying process, thus preventing the conveyor belt from deforming and causing the lid to stick to the negative pressure air intake and cause wear.

[0024] Furthermore, in order to achieve preliminary cleaning of the lunch box and automatically pour out the residue, the flipping mechanism includes an eccentric rod. The eccentric rod extends along the X direction and is located downstream of the lid-removing conveyor line. When the box body conveyed by the second conveyor belt passes the eccentric rod, it flips due to the unstable center of gravity and falls onto the cleaning conveyor line.

[0025] The flipping mechanism also includes a set of hydrodynamic flipping components, including a water jet pipe and a water pump. The inlet end of the water jet pipe is connected to the water pump, and the outlet is directed towards the weightless side of the box body on the eccentric rod, which assists in flipping the box body while rinsing the food residue inside the box body.

[0026] In addition, the boxes in this solution can be dried and automatically unloaded after cleaning.

[0027] Beneficial effects: (1) The present invention achieves reliable fully automatic lid removal and cleaning of lunch boxes by designing a clamping mechanism and an automatic lid removal mechanism, and by specially designing the lid removal mechanism. This greatly reduces manpower input and improves cleaning efficiency and quality. Because the lid removal mechanism in this application has high operational reliability, the overall equipment of this solution has high operational reliability. (2) In the present invention, by designing a lid negative pressure adsorption conveying line and a box body flipping mechanism, the lid and box body after lid removal fall into the cleaning line with their openings facing down. On the one hand, this avoids the stacking of the lid and box body, which reduces the cleaning effect. On the other hand, the openings of the lid and box body facing down are very conducive to the pouring out of food residue and also facilitates the rinsing of the box body by the rinsing water pipe, thus improving the cleaning effect. (3) By designing an eccentric rod and a hydrodynamic flipping component, the box body after opening is reliably flipped in the same direction, further ensuring the positional stability of all boxes falling into the cleaning line, avoiding the stacking problem of the lid and box body, improving the flipping effect, and assisting in improving the cleaning effect. Attached Figure Description

[0028] Figure 1 This is a side view of the overall structure of the present invention.

[0029] Figure 2 This is a top view of the overall structure of the present invention.

[0030] Figure 3 This is a top view of the clamping mechanism of the present invention;

[0031] Figure 4 This is a side view of the clamping mechanism of the present invention;

[0032] Figure 5 This is a top view of the cover-opening mechanism in the present invention.

[0033] Figure 6 This is a structural side view of the first cover assembly of the present invention;

[0034] Figure 7 This is a structural side view of the second cover assembly of the present invention;

[0035] Figure 8 This is a side view of the negative pressure adsorption conveyor line for the box lid in the present invention.

[0036] Figure 9 This is a side view of the clamping block structure in the present invention.

[0037] The components include: 1. Overall machine frame; 2. Overall box conveyor line; 21. First conveyor motor; 22. First conveyor belt; 3. Cover-removing conveyor line; 31. Second conveyor motor; 32. Second conveyor belt; 33. First fiber optic sensor switch; 34. Second fiber optic sensor switch; 35. Third fiber optic sensor switch; 36. Proximity switch; 4. Cover-removing mechanism; 41. First cover-removing assembly; 411. First cover-removing frame; 412. First upper cover-removing shaft; 41... 3. First lower cover rotating shaft; 414. First cover conveyor belt; 415. Cover gear synchronous transmission group; 4151. First cover synchronous gear; 4152. Second cover synchronous gear; 416. Pawl; 42. Second cover assembly; 421. Second cover frame; 422. Second upper cover rotating shaft; 423. Second lower cover rotating shaft; 424. Second cover conveyor belt; 43. Cover drive assembly; 431. Cover servo motor; 5. Clamping mechanism, 51. First clamping assembly, 511. First clamping shaft, 512. First clamping drive turntable, 513. Push rod, 514. First clamping guide rail, 515. Fixing block, 516. First clamping block, 5161. Groove, 5162. Claw working surface; 5163. Clamping working surface; 517. Linear slide, 52. Second clamping assembly, 521. Second clamping shaft, 522. Second clamping drive turntable, 523. Push rod 524. Rod, 526. Second clamping guide rail, 53. Second clamping block, 54. Clamping drive assembly, 551. Clamping servo motor, 6. Box lid negative pressure adsorption conveyor line, 61. Negative pressure air inlet, 62. Negative pressure system, 7. Intelligent control system, 8. Cleaning conveyor line, 81. Box lid guide plate, 9. Whole box of tableware, 91. Box lid, 92. Box body, 10. Flipping mechanism, 101. Eccentric rod, 102. Hydrodynamic flipping assembly, 11. Residue collection line. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0040] Example 1: An automatic lid-removing and residue-removing cleaning line for lunch boxes includes a machine frame 1, on which are mounted a lunch box conveyor line 2, a lid-removing conveyor line 3, a lid-removing mechanism 4, a clamping mechanism 5, a lid negative pressure adsorption conveyor line 6, a cleaning conveyor line 8, and an intelligent control system 7; the lunch box conveyor line 2, the lid-removing conveyor line 3, the lid-removing mechanism 4, the clamping mechanism 5, the lid negative pressure adsorption conveyor line 6, and the cleaning conveyor line 8 are all controlled by the intelligent control system 7.

[0041] The whole box conveyor line 2 includes a first conveyor motor 21 and a first conveyor belt 22. The first conveyor belt 22 is driven by the first conveyor motor 21, thereby driving the whole box of tableware 9 to be conveyed along the X-axis direction.

[0042] The lid-opening conveyor line 3 includes a second conveyor motor 31, a second conveyor belt 32, a first fiber optic sensor switch 33, a second fiber optic sensor switch 34, a third fiber optic sensor switch 35, and a proximity switch 36. The second conveyor belt 32 is driven by the second conveyor motor 31. The first fiber optic sensor switch 33 and the second fiber optic sensor switch 34 are mounted on the frame of the lid-opening conveyor line segment, with the second fiber optic sensor switch 34 located downstream of the first fiber optic sensor switch 33. The third fiber optic sensor switch 35 is mounted on the lid-opening mechanism 4 and located downstream of the second fiber optic sensor switch 34. The proximity switch 36 is mounted on the clamping mechanism 5. The first fiber optic sensor switch 33 is used to sense the presence of the tableware box 9. The tableware box 9 first passes the first fiber optic sensor switch 33, and then runs with the second conveyor belt 32 to the second fiber optic sensor switch 34. At this time, the tableware box conveyor line 3 continues to convey until the first fiber optic sensor switch 33 senses the next tableware box 9 and sends a signal to the intelligent control system 7. The intelligent control system 7 sends a signal to pause the operation of the whole box conveyor line 2. When the second fiber optic sensor switch 34 senses the whole box of tableware 9, it sends a signal to the intelligent control system 7. The intelligent control system 7 then controls the second conveyor motor 31 to continue conveying the whole box of tableware 9 along the X-axis to the designated position, i.e., the position of the clamping mechanism 5. After that, the second conveyor motor 31 stops running, the intelligent control system 7 controls the clamping mechanism 5 to run, the proximity switch 36 goes out, indicating that the clamping mechanism 5 is in the clamping state, and the intelligent control system 7 controls the lid-opening mechanism 4 to run, realizing the lid-opening action. The third fiber optic sensor switch 35 is used to sense the lid-opening action. After the lid-opening action is completed, the intelligent control system 7 controls the clamping mechanism 5 to release the lunch box. At this time, the proximity switch 36 lights up, indicating that this round of lid-opening operation is completed. The intelligent control system 7 then controls the second conveyor motor 32 to continue running, conveying the next lunch box sensed by the first fiber optic sensor switch 33 to the designated position, and repeating the clamping and lid-opening operation.

[0043] The clamping mechanism 5 includes a clamping frame, a first clamping assembly 51, a second clamping assembly 52, and a clamping drive assembly 5. The clamping frame is fixed to the main frame 1. The proximity switch 36 is mounted on the clamping frame. The first clamping assembly 51 and the second clamping assembly 52 are fixed to the clamping frame and symmetrically arranged on both sides of the second conveyor belt 32. The clamping drive assembly 53 drives the first clamping assembly 51 and the second clamping assembly 52 to run towards each other along the Y-axis, clamping the entire box 9 of tableware to be unlidded. After the lid is unlidded, the components run in the opposite direction to release the box body 92.

[0044] The first clamping assembly 51 includes a first clamping shaft 511, a first clamping drive turntable 512, a pair of push rods 513, a first clamping guide rail 514, a first clamping slider, and a first clamping block 516. The first clamping shaft is arranged along the X-axis and is parallel to the second conveyor belt 32. The pair of push rods 513 are fixed in relative position by a fixing block 515, which is fixed to the first clamping slider on the first clamping guide rail 514. The first clamping guide rail 514 and the pair of push rods 513 are arranged along the Y-axis and are perpendicular to the second conveyor belt 32. One end of the first clamping shaft 511 passes through the first clamping drive turntable 512 and is then connected by a pair of bearings. The seat is fixed to the outer end of the first clamping guide rail 514; the first clamping rotating shaft 511 is fixed relative to the first clamping drive turntable 512; the two sides of the first clamping drive turntable 512 are provided with identical linear grooves 517, and roller bearings are provided in the linear grooves 517. The other end of the roller bearings is fixedly connected to one end of the push rods 513, so that a pair of push rods 513 are symmetrically placed on both sides of the first clamping drive turntable 512; the other end of the pair of push rods 513 is fixedly connected to the first clamping block 516; the first clamping drive turntable 512 rotates, the roller bearings rotate along the linear grooves, and drive the first clamping block 516 on the pair of push rods 513 to reciprocate along the Y-axis direction;

[0045] The second clamping assembly 52 includes a second clamping shaft 521, a second clamping drive turntable 522, a pair of push rods 523, a second clamping guide rail 524, a second clamping slider, and a second clamping block 526. The second clamping shaft 521 is arranged along the X-axis and is parallel to the second conveyor belt 32. The pair of push rods 523 are fixed in relative position by a fixing block 525. The fixing block is fixed to the second clamping slider on the second clamping guide rail 524. The second clamping guide rail 524 and the pair of push rods 523 are arranged along the Y-axis and are perpendicular to the second conveyor belt 32. One end of the second clamping shaft 521 passes through the second clamping drive turntable 522 and is fixed by a pair of bearing seats. The outer end of the second clamping guide rail 524; the second clamping rotating shaft 521 is fixed relative to the second clamping drive turntable 522; the two sides of the second clamping drive turntable 522 are provided with the same linear slide groove, the linear slide groove is provided with a roller bearing, the other end of the roller bearing is fixedly connected to one end of the push rod, so that a pair of push rods are symmetrically placed on both sides of the second clamping drive turntable 522; the other end of the pair of push rods 523 is fixedly connected to the second clamping block 526; the second clamping drive turntable 522 rotates, the roller bearing rotates along the linear slide groove, driving the second clamping block 526 on the pair of push rods 523 to reciprocate along the Y-axis direction, and the first clamping block 516 and the second clamping block 516 run in opposite directions;

[0046] The clamping drive assembly 53 includes a clamping servo motor 531. The shaft of the clamping servo motor 531 is connected to a first clamping shaft 511 via a conveyor belt. The first clamping shaft 511 is connected to a second clamping shaft 521 via a synchronous conveyor belt to achieve synchronous power transmission. The clamping servo motor 531 drives the first clamping shaft 511 to rotate, thereby driving the rotation of a first clamping drive turntable 512 on the first clamping shaft 511. As the first clamping drive turntable 512 rotates, the roller bearings move linearly... The sliding groove causes the first clamping block on the push rod to move back and forth along the Y-axis. The rotation of the first clamping shaft drives the rotation of the second clamping shaft, which in turn drives the rotation of the second clamping drive turntable 522 on the second clamping shaft 521. As the second clamping drive turntable 522 rotates, the roller bearing slides along the linear groove, causing the second clamping block 526 on the push rod 523 to move back and forth along the Y-axis. The first clamping block and the second clamping block move in opposite directions, realizing the clamping and releasing actions of the first clamping block 516 and the second clamping block 526 on the lunch box.

[0047] The lid-lifting mechanism 4 is located above the clamping mechanism 5 and includes a lid-lifting drive assembly 43, a first lid-lifting assembly 41, and a second lid-lifting assembly 42. The lid-lifting drive assembly 43 is mounted on the machine frame 1. The first lid-lifting assembly 41 and the second lid-lifting assembly 42 are symmetrically arranged on both sides of the second conveyor belt 32. The lid-lifting drive assembly 43 synchronously drives the claws 416 on the first lid-lifting assembly 41 and the second lid-lifting assembly 42 to move upward, lifting the lid 91 on the tableware box 9 clamped by the clamping mechanism. After the lid 91 is lifted, the clamping mechanism releases the box body 92.

[0048] The first cover-shifting assembly 41 includes a first cover-shifting frame 411, a first upper cover-shifting shaft 412, a first lower cover-shifting shaft 413, and a pair of first cover-shifting conveyor belts 414. The two ends of the first upper cover-shifting shaft 412 and the first lower cover-shifting shaft 413 are respectively fixed to the first cover-shifting frame 411 along the X-axis direction by bearing assemblies. One end of the first upper cover-shifting shaft 412 is connected to the cover-shifting drive assembly 43, and the other end is equipped with a cover-shifting gear synchronous transmission group 415. A pair of first cover-shifting conveyor belts 414 are provided on the first upper cover-shifting shaft 412 and the first lower cover-shifting shaft 413. A plurality of claws 416 are fixedly installed on the first cover-shifting conveyor belts 414.

[0049] The second cover-shifting assembly 42 includes a second cover-shifting frame 421, a second upper cover-shifting shaft 422, a second lower cover-shifting shaft 423, and a pair of second cover-shifting conveyor belts 424. The two ends of the second upper cover-shifting shaft 422 and the second lower cover-shifting shaft 423 are respectively fixed to the second cover-shifting frame 421 along the X-axis direction via bearing assemblies. The second upper cover-shifting shaft 422 is connected to the cover-shifting gear synchronous transmission group 415 via a synchronous belt. A pair of second cover-shifting conveyor belts 424 are provided on the second upper cover-shifting shaft 422 and the second lower cover-shifting shaft 423. Several claws are fixedly installed on the second cover-shifting conveyor belts 424.

[0050] The cover-pulling drive assembly 43 includes a cover-pulling servo motor 431, the shaft of which is connected to a first upper cover-pulling shaft 412. The cover-pulling servo motor 431 drives the first upper cover-pulling shaft 412 to rotate, thereby causing the claws 416 on the first cover-pulling conveyor belt 414 to rotate cyclically along the Z-axis. The cover-pulling gear synchronous transmission group 415 on the first upper cover-pulling shaft 412 operates under the drive of the first upper cover-pulling shaft 412, thereby driving the rotation of the second upper cover-pulling shaft 422, thereby causing the claws on the second cover-pulling conveyor belt 424 to rotate cyclically along the Z-axis. The claws on the side closest to the second conveyor belt 32 are all in an upward running state.

[0051] Spacing plates are evenly distributed on the outer sides of the first cover conveyor track 414 and the second cover conveyor track 424, and pawls 416 are fixedly installed on the spacing plates.

[0052] To accommodate the cleaning of lunch boxes of different sizes, the first lid-opening frame 411 and the second lid-opening frame 421 are movably mounted on the overall frame 1. The relative positions of the first lid-opening frame 411 and the second lid-opening frame 421 can be adjusted to accommodate lunch boxes of different sizes.

[0053] To reliably achieve synchronous transmission and ensure that the working surfaces of the cover-shifting assembly are all in an upward state, the cover-shifting gear synchronous transmission group 415 includes a first cover-shifting synchronous gear 4151 and a second cover-shifting synchronous gear 4152. The first cover-shifting synchronous gear 4151 is mounted on the first upper cover-shifting shaft 412 and rotates with the first upper cover-shifting shaft 412. The first cover-shifting synchronous gear 4151 and the second cover-shifting synchronous gear 4152 mesh to achieve reverse operation. The second cover-shifting synchronous gear 4152 is connected to the second upper cover-shifting shaft 422 through a synchronous track to achieve power transmission, ensuring that the claws 416 on the side closest to the second conveyor track 32 are all in an upward running state.

[0054] In this embodiment, the claw and the clamping block can be designed as an integrated unit, and are made of elastic material; one side is a bevel, serving as the claw working surface 5162, and a protrusion is formed at the bottom to facilitate opening the lid; the opposite side of the claw working surface is designed as a flat surface, serving as the clamping working surface 5163. To improve the cushioning effect and avoid damage to the lunch box, both the claw working surface and the clamping working surface have grooves 5161.

[0055] The negative pressure adsorption conveyor line 6 for the lid is located above the lid-removing conveyor line 3, and includes a negative pressure air inlet 61 and a conveyor belt. The negative pressure air inlet 61 is connected to the negative pressure system 62. The conveyor belt is located below the negative pressure air inlet 61. The lid 91, which is lifted by the lid-removing mechanism, is quickly adsorbed upward by the negative pressure air inlet 61 and adheres to the conveyor belt. The conveyor belt moves forward under the drive of the drive mechanism, driving the lid 91 forward along the conveyor belt to the entrance end of the cleaning conveyor line 8. The entrance of the cleaning conveyor line 8 is provided with an inclined lid guide plate 81. After the lid 91 falls from the conveyor belt, it falls downward along the opening of the lid guide plate 81 into the cleaning conveyor line 8.

[0056] After the lid is removed, the box body 92 continues to run along the second conveyor belt 32, and after being flipped by the flipping mechanism 10, it falls onto the cleaning conveyor line 8 with its opening facing down.

[0057] The cleaning conveyor line 8 is divided into a first-section cleaning conveyor line and a second-section cleaning conveyor line along the X-axis. There is a gap of 7±1cm between the first-section cleaning conveyor line and the second-section cleaning conveyor line, so that food residue falls into the bottom residue collection line 11 through the gap. The first-section cleaning conveyor line is divided into a lid conveying section and a body conveying section. By setting the conveying direction of the lid negative pressure adsorption conveyor line, the lid 91 falls into the lid conveying section, and the body 92 falls into the body conveying section of the second-section cleaning conveyor line along the second conveyor belt 32. A rinsing water pipe is provided below the second-section cleaning conveyor line to rinse the lid and body facing downwards.

[0058] To minimize wear and tear on the lunchboxes, the conveyor belt consists of a set of parallel flat ropes. A support frame is provided between each parallel flat rope to prevent the flat rope belt from deforming upwards due to the suction of the wind during the conveying process. This prevents the conveyor belt from deforming and causing the lid to stick to the negative pressure air intake, resulting in wear.

[0059] To achieve preliminary cleaning of the lunch box and automatically pour out the residue, the flipping mechanism 10 includes an eccentric rod 101. The eccentric rod 101 extends along the X direction and is located downstream of the lid-opening conveyor line 3. When the box body 92 conveyed by the second conveyor belt 32 passes the eccentric rod 101, it flips due to the unstable center of gravity and falls onto the cleaning conveyor line.

[0060] The flipping mechanism 101 also includes a set of hydrodynamic flipping components 102, including a water jet pipe and a water pump. The inlet end of the water jet pipe is connected to the water pump, and the outlet is directed towards the weightless side of the box body on the eccentric rod, which assists in flipping the box body while rinsing the food residue inside the box body.

[0061] In addition, the boxes in this solution can be dried and automatically unloaded after cleaning.

[0062] In this invention, the intelligent control system includes a pre-feeding module, a positioning feeding module, a clamping control module, a lid-removing control module, a negative pressure adsorption conveying control module, and a cleaning control module. The pre-feeding module controls the operation of the whole-box conveyor line. The positioning feeding module senses signals from a first fiber optic sensor switch, a second fiber optic sensor switch, a third fiber optic sensor switch, and a proximity switch, and conveys the lunchbox to a designated position to perform clamping and lid removal operations. The clamping control module controls the operating status of the clamping drive assembly. The lid-removing control module controls the operating status of the lid-removing drive assembly. The negative pressure adsorption conveying control module controls the status of the negative pressure adsorption operation and the lid adsorption conveying operation. The cleaning control module controls the working status of the rinsing operation on the cleaning line. All parts work together to achieve automated lid removal and cleaning of the lunchboxes.

[0063] The overall operating principle of this invention is as follows: Under the control of the intelligent control system 7, the tableware box 9 is first clamped by the clamping mechanism 5 during the conveying process, and then the lid-removing mechanism 4 removes the lid. The removed lid 91 is transported to the cleaning conveying line 8 by the lid negative pressure adsorption conveying line 6. The box body 92 continues to be conveyed on the lid-removing conveying line 3 and falls onto the cleaning conveying line 8 through the flipping mechanism 10. Finally, the cleaning operation is completed on the cleaning conveying line 8. The cleaned box body can also enter the drying and automatic unloading and arrangement process.

[0064] This invention achieves reliable, fully automated lid removal and cleaning of lunch boxes through the combined operation of a clamping mechanism and an automatic lid-removing mechanism, with a special design for the lid-removing mechanism. This significantly reduces manpower input and improves cleaning efficiency and quality. The high reliability of the lid-removing mechanism in this invention contributes to the overall high reliability of the equipment. By designing a negative pressure suction conveyor line for the lid and a box-body flipping mechanism, the lids and bodies fall side-by-side onto the cleaning line after being removed, preventing stacking and reducing cleaning effectiveness. Furthermore, the downward-facing lids and bodies facilitate the removal of food residue and allow for easy rinsing with the water pipes, further enhancing the cleaning effect. The design of an eccentric rod and a hydrodynamic flipping component ensures that the opened boxes flip reliably in the same direction, further guaranteeing the stability of all boxes as they fall onto the cleaning line, preventing lid and body stacking, and improving both the flipping and cleaning effects.

[0065] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An automatic lid-opening and residue-removing cleaning line for lunch boxes, comprising a machine frame, characterized in that: The machine frame is equipped with a box conveying line, a lid-removing conveying line, a lid-removing mechanism, a clamping mechanism, a lid negative pressure adsorption conveying line, a cleaning conveying line, and an intelligent control system; the box conveying line, lid-removing conveying line, lid-removing mechanism, clamping mechanism, lid negative pressure adsorption conveying line, and cleaning conveying line are all controlled by the intelligent control system. The whole box conveyor line includes a first conveyor motor and a first conveyor belt. The first conveyor belt is driven by the first conveyor motor, thereby driving the whole box of tableware to be conveyed along the X-axis direction. The lid-opening conveyor line includes a second conveyor motor, a second conveyor belt, a first fiber optic sensor switch, a second fiber optic sensor switch, a third fiber optic sensor switch, and a proximity switch. The second conveyor belt is driven by the second conveyor motor. The first and second fiber optic sensor switches are mounted on the frame of the lid-opening conveyor line segment, with the second fiber optic sensor switch located downstream of the first fiber optic sensor switch. The third fiber optic sensor switch is mounted on the lid-opening mechanism and located downstream of the second fiber optic sensor switch. The proximity switch is mounted on the clamping mechanism. The first fiber optic sensor switch is used to sense the presence of a complete tableware box. The complete tableware box first passes the first fiber optic sensor switch and then moves with the second conveyor belt to the second fiber optic sensor switch. At this time, the conveyor line continues to transport the tableware box until the first fiber optic sensor switch senses the next complete tableware box and sends a signal to the intelligent control system. The control system pauses the operation of the whole box conveyor line; when the second fiber optic sensor detects a whole box of tableware, it sends a signal to the intelligent control system, which then controls the second conveyor motor to continue conveying the whole box of tableware along the X-axis to the designated position, i.e., the position of the clamping mechanism; after that, the second conveyor motor stops running, the intelligent control system controls the clamping mechanism to run, the proximity switch light goes out, indicating that the clamping mechanism is in the clamping state, and then the intelligent control system controls the lid-opening mechanism to run, realizing the lid-opening action. The third fiber optic sensor is used to detect the lid-opening action; after the lid-opening action is completed, the intelligent control system controls the clamping mechanism to release the tableware, at which point the proximity switch light comes on, indicating that this round of lid-opening operation is completed, and the intelligent control system controls the second conveyor motor to continue running, conveying the next tableware detected by the first fiber optic sensor to the designated position, and repeating the clamping and lid-opening operation; The clamping mechanism includes a clamping frame, a clamping drive assembly, a first clamping assembly, and a second clamping assembly. The clamping frame is fixed to the main frame. The proximity switch is mounted on the clamping frame. The first clamping assembly and the second clamping assembly are fixed to the clamping frame and symmetrically arranged on both sides of the second conveyor belt. The clamping drive assembly drives the first clamping assembly and the second clamping assembly to run towards each other along the Y-axis, clamping the entire box of tableware to be unlidded. After the lid is removed, they run in the opposite direction to release the box. The lid-lifting mechanism is located above the clamping mechanism and includes a lid-lifting drive assembly, a first lid-lifting assembly, and a second lid-lifting assembly. The lid-lifting drive assembly is mounted on the machine frame, and the first and second lid-lifting assemblies are symmetrically arranged on both sides of the second conveyor belt. The lid-lifting drive assembly synchronously drives the claws on the first and second lid-lifting assemblies to move upward, lifting the lid of the tableware box clamped by the clamping mechanism. After the lid is lifted, the clamping mechanism releases the tableware box. The negative pressure adsorption conveyor line for the lid is located above the lid-removing conveyor line and includes a negative pressure air inlet and a conveyor belt. The negative pressure air inlet is connected to a negative pressure system. The conveyor belt is located below the negative pressure air inlet; the lid lifted by the lid-lifting mechanism is quickly drawn upward by the negative pressure air inlet and adheres to the conveyor belt. The conveyor belt moves forward under the drive of the drive mechanism, driving the lid forward along the conveyor belt to the entrance of the cleaning conveyor line; the entrance of the cleaning conveyor line is provided with an inclined lid guide plate. After the lid falls from the conveyor belt, it falls downward along the lid guide plate and into the cleaning conveyor line. After the lid is removed, the lunch box continues to run along the second conveyor belt, and after being flipped over by the flipping mechanism, it falls into the cleaning conveyor line with its opening facing down for cleaning. The first cover-shifting assembly includes a first cover-shifting frame, a first upper cover-shifting shaft, a first lower cover-shifting shaft, and a pair of first cover-shifting conveyor belts. Both ends of the first upper and lower cover-shifting shafts are fixed to the first cover-shifting frame along the X-axis direction via bearing assemblies. One end of the first upper cover-shifting shaft is connected to a cover-shifting drive assembly, and the other end is fitted with a cover-shifting gear synchronous transmission group. A pair of first cover-shifting conveyor belts are provided on the first upper and lower cover-shifting shafts. Several pawls are fixedly installed on the first cover-shifting conveyor belts. The second cover-shifting assembly includes a second cover-shifting frame, a second upper cover-shifting shaft, a second lower cover-shifting shaft, and a pair of second cover-shifting conveyor belts. Both ends of the second upper and lower cover-shifting shafts are fixed to the second cover-shifting frame along the X-axis via bearing assemblies. The second upper cover-shifting shaft is connected to a cover-shifting gear synchronous transmission group via a synchronous belt. A pair of second cover-shifting conveyor belts are provided on the second upper and lower cover-shifting shafts. Several claws are fixedly installed on the second cover-shifting conveyor belts. The cover-pulling drive assembly includes a cover-pulling servo motor, the shaft of which is connected to a first upper cover-pulling shaft. The cover-pulling servo motor drives the first upper cover-pulling shaft to rotate, thereby causing the claws on the first cover-pulling conveyor belt to rotate cyclically along the Z-axis. The cover-pulling gear synchronous transmission group on the first upper cover-pulling shaft operates under the drive of the first upper cover-pulling shaft, thereby driving the rotation of the second upper cover-pulling shaft, thereby causing the claws on the second cover-pulling conveyor belt to rotate cyclically along the Z-axis. The claws near the second conveyor belt are all in an upward running state. Spacing plates are evenly distributed on the outer sides of the first and second cover conveyor tracks, and claws are fixedly installed on the spacing plates.

2. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 1, characterized in that: The first clamping assembly includes a first clamping shaft, a first clamping drive turntable, a pair of push rods, a first clamping guide rail, a first clamping slider, and a first clamping block. The first clamping shaft is arranged along the X-axis and parallel to the second conveyor belt. The pair of push rods are fixed in relative position by a fixing block, which is fixed to the first clamping slider on the first clamping guide rail. The first clamping guide rail and the pair of push rods are arranged along the Y-axis and perpendicular to the second conveyor belt. One end of the first clamping shaft passes through the first clamping drive turntable and then through a pair of bearing seats. The first clamping guide rail is fixed to the outer end; the first clamping shaft is fixed relative to the first clamping drive turntable; the two sides of the first clamping drive turntable are provided with the same linear groove, and the linear groove is provided with a roller bearing. The other end of the roller bearing is fixedly connected to one end of the push rod, so that a pair of push rods are symmetrically placed on both sides of the first clamping drive turntable; the other end of the pair of push rods is fixedly connected to the first clamping block; the first clamping drive turntable rotates, the roller bearing rotates along the linear groove, and drives the first clamping block on the pair of push rods to reciprocate along the Y-axis direction; The second clamping assembly includes a second clamping shaft, a second clamping drive turntable, a pair of push rods, a second clamping guide rail, a second clamping slider, and a second clamping block. The second clamping shaft is arranged along the X-axis and parallel to the second conveyor belt. The pair of push rods are fixed in relative position by a fixing block, which is fixed to the second clamping slider on the second clamping guide rail. The second clamping guide rail and the pair of push rods are arranged along the Y-axis and perpendicular to the second conveyor belt. One end of the second clamping shaft passes through the second clamping drive turntable and is fixed to the second clamping slider by a pair of bearing seats. The outer end of the rail; the second clamping shaft is fixed relative to the second clamping drive turntable; the two sides of the second clamping drive turntable are provided with the same linear slide groove, and the linear slide groove is provided with a roller bearing. The other end of the roller bearing is fixedly connected to one end of the push rod, so that a pair of push rods are symmetrically placed on both sides of the second clamping drive turntable; the other end of the pair of push rods is fixedly connected to the second clamping block; the second clamping drive turntable rotates, the roller bearing rotates along the linear slide groove, and drives the second clamping block on the pair of push rods to reciprocate along the Y-axis direction, and the first clamping block and the second clamping block run in opposite directions.

3. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 2, characterized in that: The clamping block is made of elastic material, and its working surface has spaced grooves.

4. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 3, characterized in that: The clamping drive assembly includes a clamping servo motor, the shaft of which is connected to a first clamping shaft via a conveyor belt. The first clamping shaft is connected to a second clamping shaft via a synchronous conveyor belt, enabling synchronous power transmission. The clamping servo motor drives the first clamping shaft to rotate, which in turn drives the first clamping drive turntable on the first clamping shaft to rotate. As the first clamping drive turntable rotates, the roller bearing slides along a linear groove, causing the first clamping block on the push rod to move back and forth along the Y-axis. The rotation of the first clamping shaft drives the rotation of the second clamping shaft, which in turn drives the rotation of the second clamping drive turntable on the second clamping shaft. As the second clamping drive turntable rotates, the roller bearing slides along a linear groove, causing the second clamping block on the push rod to move back and forth along the Y-axis. The first and second clamping blocks move in opposite directions, enabling the clamping and releasing actions of the first and second clamping blocks on the food container.

5. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 1, characterized in that: The claw is made of elastic material and has an overall trapezoidal structure that is shorter at the top and longer at the bottom, making the working surface of the claw inclined and forming a protrusion at the bottom to facilitate opening the box lid.

6. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 5, characterized in that: The first and second lid-opening frames are movably mounted on the overall frame, and the relative positions of the first and second lid-opening frames can be adjusted to accommodate different sized lunch boxes.

7. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 6, characterized in that: The cover-shifting gear synchronous transmission assembly includes a first cover-shifting synchronous gear and a second cover-shifting synchronous gear. The first cover-shifting synchronous gear is mounted on a first upper cover-shifting shaft and rotates with the first upper cover-shifting shaft. The first cover-shifting synchronous gear and the second cover-shifting synchronous gear mesh to achieve reverse operation. The second cover-shifting synchronous gear is connected to the second upper cover-shifting shaft through a synchronous track to achieve synchronous power transmission, so that the claws on the side closest to the second conveyor track are all in an upward running state.

8. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 7, characterized in that: The conveyor belt consists of a set of parallel flat ropes, with a support frame between each parallel flat rope.

9. The automatic lid-opening and residue-removing cleaning line for lunch boxes according to claim 8, characterized in that: The flipping mechanism includes an eccentric rod that extends along the X direction and is located downstream of the cover conveyor line. When the box body conveyed by the second conveyor belt passes the eccentric rod, it flips due to the unstable center of gravity and falls onto the cleaning conveyor line. The flipping mechanism also includes a set of hydrodynamic flipping components, including a water jet pipe and a water pump. The inlet end of the water jet pipe is connected to the water pump, and the outlet is directed towards the weightless side of the box body on the eccentric rod, which assists in flipping the box body while rinsing the food residue inside the box body.

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