A stable automated elevator device for food production

Abstract

The present application belongs to the technical field of elevator device, especially relates to a stable automatic elevator device for food production, which comprises two front and rear interval arranged cross beams, two ends of the cross beams away from each other are fixedly connected with two vertical columns, a conveying belt is fixedly installed between the two cross beams, a sliding groove is horizontally arranged on the upper end of the two cross beams, an adjustable lifting mechanism is arranged above the conveying belt, the adjustable lifting mechanism comprises two moving tables which are slidingly connected on the sliding grooves, the two moving tables are oppositely arranged and are L-shaped, the two moving tables away from each other are fixedly connected through a U-shaped connecting plate, and a guide inclined rod which is inclined from left to right and upward is rotatably connected on the two moving tables. The present application is used for conveying and automatic lifting work before the food packaging box is stacked, and further improves the stacking efficiency.

Description

Technical Field

[0001] This invention relates to the field of elevator equipment technology, and in particular to a stable automated elevator equipment for food production. Background Technology

[0002] Elevator devices are widely used in food production, packaging, and palletizing processes, primarily for the vertical transport of materials, semi-finished products, or finished products. In food industrial production, especially in highly automated production lines, elevators need to be stable, efficient, and flexible to adapt to the height requirements of different production lines, transport different sizes of packaging boxes, and meet food safety and hygiene standards.

[0003] Currently, most common hoisting devices adopt a fixed structure, with a non-adjustable or limited adjustment range for lifting height, making it difficult to adapt to the height requirements of different processes or palletizing equipment. While some hoists do possess some adjustment capabilities, their complex structures and cumbersome adjustment processes often compromise stability, especially during lifting, where vibration or inertia can easily cause material shifting or tipping, affecting production efficiency and safety. Furthermore, existing hoisting devices typically occupy a large space, hindering flexible deployment in limited workshop layouts, and their automation levels are limited, relying heavily on manual intervention for material positioning or centering, increasing labor costs and potentially introducing hygiene hazards.

[0004] Therefore, there is an urgent need to design a lifting device with a reasonable structure, stable operation, highly adjustable height, and a high degree of automation to meet the modern demands for efficient, hygienic, and flexible conveying and lifting in food production. To address the aforementioned issues, we propose a stable automated lifting device for food production. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing a stable automated lifting machine device for food production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a stable automated lifting machine device for food production, comprising two crossbeams spaced apart front to back, two columns fixedly connected to the ends of the two crossbeams that are far apart, a conveyor belt fixedly installed between the two crossbeams, a chute horizontally opened at the upper end of each of the two crossbeams, an adjustable lifting mechanism above the conveyor belt, the adjustable lifting mechanism comprising a movable platform slidably connected to the chute, two movable platforms being arranged opposite each other and being L-shaped, the ends of the two movable platforms that are far apart being fixedly connected by a U-shaped connecting plate, a guide rod rotatably connected to each of the two movable platforms that is inclined upward from left to right, a multi-stage telescopic rod rotatably connected to the ends of the two guide rods that are far apart from the movable platforms, the telescopic ends of the two multi-stage telescopic rods being arranged downward and connected to the two columns located on the right side through a lifting assembly; Each of the two guide rods has a moving groove on one side of its opposite side, and a moving block is slidably connected in each of the two moving grooves. Each of the two moving blocks is rotatably connected to a coaxial shaft at one end of its opposite side, and a U-shaped lifting platform is fixedly connected between the two shafts.

[0007] In the aforementioned stable automated lifting device for food production, a base plate is fixedly connected to the lower ends of the two crossbeams. Two fixed plates are fixedly connected to the lower ends of the base plate, spaced apart from each other. A first threaded rod is rotatably connected between the two fixed plates. The first threaded rod passes through the connecting plate and is threadedly connected to it. A first motor that drives the first threaded rod to rotate is fixedly installed at the lower end of the base plate.

[0008] In the aforementioned stable automated lifting machine device for food production, the lifting assembly includes lifting slots on the upper ends of two columns on the right side, lifting plates are slidably connected in the lifting slots, the telescopic ends of the multi-stage telescopic rods are fixedly connected to the upper ends of the corresponding lifting plates, pins are movably inserted into the two columns on the right side, and pin holes corresponding to the positions of the pins are opened on the two lifting plates.

[0009] In the aforementioned stable automated lifting machine device for food production, a second threaded rod is rotatably connected in the rear movable slot. The second threaded rod passes through the corresponding movable block and is threadedly connected to it. A second motor that drives the second threaded rod to rotate is fixedly installed on the rear guide bar.

[0010] In the aforementioned stable automated lifting machine device for food production, a horizontal locking mechanism is provided between the guide rod at the front and the lifting platform. The horizontal locking mechanism includes a gear fixedly sleeved on the shaft at the front. The upper end of the guide rod at the front has a sliding opening that communicates with a slide groove. A slider slides through the sliding opening. One end of the slider in the slide groove is fixedly connected to a moving block. A first telescopic cylinder is fixedly installed at the end of the slider outside the guide rod. A movable ring plate is fixedly connected to the telescopic end of the first telescopic cylinder. Three evenly distributed limit pins are fixedly connected to the end of the movable ring plate sleeved on the shaft and facing the lifting platform. All three limit pins are locked in the tooth grooves of the gear.

[0011] In the aforementioned stable automated lifting machine device for food production, push plates are provided on both the front and rear inner walls of the lifting platform. Two sliding rods are fixedly connected to one end of the push plate near the inner wall of the lifting platform. The two sliding rods pass through the inner wall of the lifting platform and are slidably connected thereto. An end cap is fixedly connected to one end of the sliding rod outside the lifting platform. A spring is fixedly connected between the end cap and the lifting platform. A second telescopic cylinder is fixedly installed on each of the two moving platforms. The telescopic end of the second telescopic cylinder is set towards the corresponding push plate.

[0012] In the aforementioned stable automated lifting device for food production, multiple electric rollers are installed on opposite sides of the two push plates, and a first infrared sensor and a second infrared sensor are installed on the push plates from left to right.

[0013] Compared with existing technologies, the advantages of this invention are: This invention uses a first motor to drive a moving platform along a slide rail, changing the inclination angle of the guide rod. Combined with the cooperation of multi-stage telescopic rods, it can flexibly adjust the lifting end height of the lifting platform. This design can adapt to the height requirements of different palletizing equipment or different production lines without replacing parts or making significant structural modifications, significantly enhancing the versatility of the device and the flexibility of the production line.

[0014] The lifting platform is rotatably connected to the moving block via a shaft, and with the help of a horizontal locking mechanism (the engagement and locking of gears and limit pins), it can maintain a horizontal posture at all times during the lifting process, preventing materials from tilting or slipping. The linkage support structure of the guide bar and multi-stage telescopic rod further enhances the stability and safety of the lifting process, making it especially suitable for conveying fragile materials such as food packaging boxes.

[0015] The device is equipped with an automatic centering and conveying system consisting of infrared sensors, electric rollers, and telescopic cylinders. When a food packaging box enters the lifting platform area, the system automatically detects and controls the pusher plate to center and position it, and then the electric rollers smoothly push it into the lifting platform, all without manual operation. This not only improves work efficiency but also reduces personnel contact and better meets the hygiene requirements of food production.

[0016] By using the pins and lifting slots, the multi-stage telescopic rods can be retracted and stored inside the column, while the guide rods are restored to a horizontal state. This significantly reduces the overall volume of the device when not in use, making it easier to store or adjust the layout in a limited space and improving the utilization rate of workshop space.

[0017] The functional modules are clearly laid out, and the transmission and actuation components are easy to inspect and replace. For example, the sliding connection between the moving stage and the guide rod, the threaded rod transmission mechanism, and the detachable pin locking structure all reflect the modular design concept, reducing the complexity and cost of daily maintenance. Attached Figure Description

[0018] Figure 1 This is a perspective view of a stable automated lifting device for food production proposed in this invention; Figure 2 This is a perspective view of a stable automated lifting device for food production proposed in this invention. Figure 3 This is a perspective view of another state of the stable automated lifting machine device for food production proposed in this invention; Figure 4 This is a perspective view of the adjustable lifting mechanism in a stable automated lifting machine device for food production proposed in this invention. Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 This is a perspective view of the lifting platform in a stable automated lifting machine device for food production proposed in this invention; Figure 7 This is a perspective view of the guide bar in a stable automated lifting device for food production proposed in this invention; Figure 8 for Figure 7 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Crossbeam, 2. Column, 3. Conveyor belt, 4. Slide, 5. Moving platform, 6. Connecting plate, 7. Guide rod, 8. Multi-stage telescopic rod, 9. Base plate, 10. First threaded rod, 11. First motor, 12. Lifting plate, 13. Moving groove, 14. Moving block, 15. Shaft, 16. Lifting platform, 17. Second threaded rod, 18. Second motor, 19. Gear, 20. Slide opening, 21. Slider, 22. First telescopic cylinder, 23. Movable ring plate, 24. Limiting pin, 25. Push plate, 26. Slide rod, 27. Spring, 28. Electric roller, 29. First infrared sensor, 30. Second infrared sensor, 31. Second telescopic cylinder. Detailed Implementation

[0020] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] Reference Figures 1-8 An automated lifting device for food production includes two crossbeams 1 spaced apart, with two columns 2 fixedly connected to the far ends of each crossbeam 1, providing support. A conveyor belt 3 is fixedly installed between the two crossbeams 1 for automated conveying of food packaging boxes. A chute 4 is laterally formed at the upper end of each crossbeam 1, and an adjustable lifting mechanism is provided above the conveyor belt 3 to lift the food packaging boxes conveyed by the conveyor belt 3 to a designated height, facilitating palletizing by palletizing equipment.

[0022] The adjustable lifting mechanism includes two movable platforms 5 slidably connected to the slide groove 4. The two movable platforms 5 are arranged opposite each other in an L-shape. The ends of the two movable platforms 5 that are far apart are fixedly connected by a U-shaped connecting plate 6, so that the two movable platforms 5 can move synchronously. The lower ends of the two crossbeams 1 are fixedly connected to a base plate 9. The lower end of the base plate 9 is fixedly connected to two fixed plates that are spaced apart on the left and right. A first threaded rod 10 is rotatably connected between the two fixed plates. The first threaded rod 10 passes through the connecting plate 6 and is threadedly connected to it. A first motor 11 is fixedly installed at the lower end of the base plate 9 to drive the first threaded rod 10 to rotate. The first motor 11 can move the connecting plate 6 by driving the first threaded rod 10 to rotate, thereby driving the two movable platforms 5 to move synchronously.

[0023] Each of the two movable platforms 5 is rotatably connected to a guide rod 7 that tilts upwards from left to right, and the rotation axes of the two guide rods 7 are coaxial. A multi-stage telescopic rod 8 is rotatably connected to the end of each guide rod 7 away from the movable platform 5. The telescopic ends of the two multi-stage telescopic rods 8 are both downwards and connected to the two right-side columns 2 via a lifting assembly. The lifting assembly includes a lifting groove on the upper end of the two right-side columns 2, and a lifting plate 12 is slidably connected within the lifting groove. The lifting plate 12 can move vertically within the lifting groove. The telescopic ends of the multi-stage telescopic rods 8 are fixedly connected to the upper ends of the corresponding lifting plates 12. The arrangement of the lifting plates 12 and the lifting grooves keeps the multi-stage telescopic rods 8 vertical. A pin is movably inserted into each of the two right-side columns 2, and a pin hole corresponding to the pin position is opened on each of the two lifting plates 12. The pins and pin holes are used to fix the position of the lifting plates 12 and keep the lower end of the multi-stage telescopic rods 8 at a constant height.

[0024] Furthermore, under the condition that the multi-stage telescopic rod 8 remains vertical and is telescopic, the tilt of the guide rod 7 can be changed by moving the two moving platforms 5 simultaneously by the first motor 11, thereby adjusting the position and height of the connection end between the guide rod 7 and the multi-stage telescopic rod 8.

[0025] Each of the two guide rails 7 has a movable groove 13 on one side. A movable block 14 is slidably connected within each of the two movable grooves 13. A coaxial shaft 15 is rotatably connected to one end of each of the two movable blocks 14. A U-shaped lifting platform 16 is fixedly connected between the two shafts 15. The lifting platform 16 can move along the movable groove 13 on the guide rail 7 via the shafts 15 and the movable blocks 14. A second threaded rod 17 is rotatably connected within the rear movable groove 13. The second threaded rod 17 passes through and is threadedly connected to the corresponding movable block 14. A second motor 18 is fixedly installed on the rear guide rail 7 to drive the second threaded rod 17. Driving the second threaded rod 17 with the second motor 18 moves the corresponding movable block 14, thereby moving the lifting platform 16 and facilitating its movement from the left end to the right end of the guide rail 7, thus achieving a height increase.

[0026] It should be noted that when the lifting platform 16 is in its lowest position, its bottom is in contact with the conveyor belt 3. The bottom of the lifting platform 16 is smooth and does not affect the normal conveying operation of the conveyor belt 3. Thus, the food packaging boxes that have been conveyed can be transported onto the lifting platform 16. Furthermore, the rotation axes of the two shafts 15 and the guide rod 7 remain concentric. In this state, no matter how the inclination of the guide rod 7 changes, the position height of the lifting platform 16 remains in contact with the conveyor belt 3.

[0027] A horizontal locking mechanism is provided between the guide rod 7 at the front and the lifting platform 16 to lock the lifting platform 16, preventing it from rotating and ensuring its stability during the lifting process. The horizontal locking mechanism includes a gear 19 fixedly sleeved on the shaft 15 at the front, thus fixing the gear 19 to the lifting platform 16. The upper end of the guide rod 7 at the front has a sliding opening 20 that communicates with the slide groove 4. A slider 21 slides through the sliding opening 20, and one end of the slider 21 located in the slide groove 4 is fixedly connected to the moving block 14. The slider 21 moves with the moving block 14. A first telescopic cylinder 22 is fixedly installed at one end of the slider 21 outside the guide rod 7. A movable ring plate 23 is fixedly connected to the telescopic end of the first telescopic cylinder 22. The movable ring plate 23 is sleeved on the shaft 15, and three evenly distributed limiting pins 24 are fixedly connected to the end of the movable ring plate 23 facing the lifting platform 16. All three limiting pins 24 are engaged in the tooth grooves of the gear 19 to fix the gear 19, preventing it from rotating and thus ensuring that the lifting platform 16 is in a horizontal state. The first telescopic cylinder 22 controls the movement of the movable ring plate 23, thereby causing the three limiting pins 24 to disengage from or insert into the tooth grooves of the gear 19.

[0028] Furthermore, the horizontally positioned lifting platform 16, in conjunction with the second motor 18, can stably lift food packaging boxes to a specified height. When the required lifting height needs to be changed, simply control the first telescopic cylinder 22 to move the three limit pins 24 out of the gear 19's grooves, and then adjust the inclination of the guide rod 7 via the first motor 11, moving its connection point with the multi-stage telescopic rod to the required height. At this point, the lifting platform 16 remains horizontal due to contact with the conveyor belt 3. Then, by having the first telescopic cylinder 22 drive the three limit pins 24 back into the gear 19's grooves, the lifting platform 16 can be locked. The lifting platform 16 can then move to the corresponding height under the drive of the second motor 18. This automatic height adjustment offers high flexibility.

[0029] Push plates 25 are provided on both the front and rear inner walls of the lifting platform 16. Two sliding rods 26 are fixedly connected to the end of the push plate 25 near the inner wall of the lifting platform 16. The two sliding rods 26 pass through the inner wall of the lifting platform 16 and are slidably connected to it. An end cap is fixedly connected to the end of the sliding rod 26 outside the lifting platform 16. A spring 27 is fixedly connected between the end cap and the lifting platform 16. A second telescopic cylinder 31 is fixedly installed on each of the two moving platforms 5. The telescopic end of the second telescopic cylinder 31 is set towards the corresponding push plate 25. Multiple electric rollers 28 are installed on opposite sides of the two push plates 25, evenly spaced. A first infrared sensor 29 and a second infrared sensor 30 are installed on the push plate 25 from left to right. The first infrared sensor 29 and the second infrared sensor 30 are existing technologies and will not be described here. The left end of the push plate 25 extends out of the lifting platform 16. Specifically, when the food packaging box to be palletized is transported to the left side of the lifting platform 16, the first infrared sensor 29 is triggered first, and the two second telescopic cylinders 31 work simultaneously, pushing the two push plates 25 to move closer together to center the food packaging box. Then, the electric rollers 28 on the two push plates 25 work to push the food packaging box in the clamped state to move into the lifting platform 16 until the second infrared sensor 30 is triggered and the transport stops. The second telescopic cylinders 31 reset, and the two push plates 25 reset under the action of the spring 27. At this time, the food packaging box is stably placed on the lifting platform 16, which is convenient for the palletizing robot to accurately grasp after being lifted to the designated height.

[0030] This invention is used for conveying and automatically lifting food packaging boxes before palletizing, which further improves palletizing efficiency. When not using this device, the pin can be pulled out to retract the multi-stage telescopic rod 8 into the column 2, and the originally inclined guide rod 7 can be placed horizontally, which greatly reduces the space occupied by the device.

[0031] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stable automated lifting device for food production, comprising two crossbeams (1) spaced apart front to back, characterized in that, Two columns (2) are fixedly connected to the ends of the two beams (1) that are far apart. A conveyor belt (3) is fixedly installed between the two beams (1). A chute (4) is opened horizontally at the upper end of the two beams (1). An adjustable lifting mechanism is provided above the conveyor belt (3). The adjustable lifting mechanism includes a moving platform (5) that is slidably connected to the chute (4). The two moving platforms (5) are arranged opposite each other and are L-shaped. The ends of the two moving platforms (5) that are far apart are fixedly connected by a U-shaped connecting plate (6). A guide rod (7) that is inclined upward from left to right is rotatably connected to the two moving platforms (5). A multi-stage telescopic rod (8) is rotatably connected to the ends of the two guide rods (7) that are far away from the moving platform (5). The telescopic ends of the two multi-stage telescopic rods (8) are both set downward and connected to the two columns (2) on the right side through a lifting assembly. Each of the two guide rods (7) has a moving groove (13) on one side of each other. Each of the two moving grooves (13) has a moving block (14) slidably connected in one side. Each of the two moving blocks (14) has a coaxial shaft (15) rotatably connected at one end of each other. A U-shaped lifting platform (16) is fixedly connected between the two shafts (15).

2. The stabilizing automated lifting device for food production according to claim 1, characterized in that, The two beams (1) are fixedly connected to a base plate (9) at their lower ends. The base plate (9) is fixedly connected to two fixed plates spaced apart on the left and right. A first threaded rod (10) is rotatably connected between the two fixed plates. The first threaded rod (10) passes through the connecting plate (6) and is threadedly connected to it. A first motor (11) that drives the first threaded rod (10) to rotate is fixedly installed at the lower end of the base plate (9).

3. The stabilizing automated lifting device for food production according to claim 1, characterized in that, The lifting assembly includes lifting slots on the upper ends of two columns (2) on the right side, and a lifting plate (12) is slidably connected in the lifting slot. The telescopic end of the multi-stage telescopic rod (8) is fixedly connected to the upper end of the corresponding lifting plate (12). The two columns (2) on the right side are movably inserted with pins, and the two lifting plates (12) are provided with pin holes corresponding to the pin positions.

4. The stabilizing automated lifting device for food production according to claim 1, characterized in that, A second threaded rod (17) is rotatably connected in the movable slot (13) located at the rear. The second threaded rod (17) passes through the corresponding movable block (14) and is threadedly connected to it. A second motor (18) that drives the second threaded rod (17) to rotate is fixedly installed on the guide rod (7) located at the rear.

5. A stable automated lifting device for food production according to claim 1, characterized in that, A horizontal locking mechanism is provided between the guide rod (7) located in front and the lifting platform (16). The horizontal locking mechanism includes a gear (19) fixedly sleeved on the shaft (15) located in front. The upper end of the guide rod (7) located in front is provided with a sliding opening (20) communicating with the sliding groove (4). A slider (21) slides through the sliding opening (20). One end of the slider (21) located in the sliding groove (4) is fixedly connected to the moving block (14). The end of the slider (21) located outside the guide rod (7) is fixedly installed with a first telescopic cylinder (22). The telescopic end of the first telescopic cylinder (22) is fixedly connected with a movable ring plate (23). The movable ring plate (23) is sleeved on the shaft (15) and is fixedly connected to three evenly distributed limit pins (24) at the end facing the lifting platform (16). The three limit pins (24) are all locked in the tooth groove of the gear (19).

6. A stabilizing automated lifting device for food production according to claim 1, characterized in that, Push plates (25) are provided on the front and rear inner walls of the lifting platform (16). Two slide rods (26) are fixedly connected to one end of the push plate (25) near the inner wall of the lifting platform (16). The two slide rods (26) pass through the inner wall of the lifting platform (16) and are slidably connected thereto. An end cap is fixedly connected to one end of the slide rod (26) outside the lifting platform (16). A spring (27) is fixedly connected between the end cap and the lifting platform (16). A second telescopic cylinder (31) is fixedly installed on each of the two moving platforms (5). The telescopic end of the second telescopic cylinder (31) is set toward the corresponding push plate (25).

7. A stabilizing automated lifting device for food production according to claim 6, characterized in that, Multiple electric rollers (28) are installed on opposite sides of the two push plates (25) and are spaced apart. A first infrared sensor (29) and a second infrared sensor (30) are installed on the push plates (25) from left to right.

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