A height adjustment device and method for carton lid

Abstract

This invention discloses a carton lid height adjustment device and method. The device includes a tray, a lifting assembly, a high-position detection switch, and a low-position detection switch. Cartons are folded and stacked on the tray. The lifting assembly is located at one end of the tray and is used to lift the carton lid. The high-position detection switch and the low-position detection switch are located at the loading station of the carton unpacking and packing system. The low-position detection switch and the high-position detection switch are used to detect the lid of the cigarette box on the top layer of the tray. If the low-position detection switch does not detect the cigarette box lid, the lifting assembly rises, causing the carton lid to rise. If the high-position detection switch detects the cigarette box lid, the lifting assembly descends, causing the carton lid to descend. This invention improves the success rate of carton loading and enhances the level of automation by automatically identifying the lid and compensating for the height difference between the lid and the carton body.

Description

Technical Field

[0001] This invention relates to the field of leaf re-drying and packaging production technology, specifically to a carton lid height adjustment device and method. Background Technology

[0002] In tobacco production enterprises, pallets are one of the logistics equipment used for storing, loading, and transporting goods. Commonly used pallets include wooden pallets, plastic pallets, and steel pallets. In the carton unpacking and packing system of the leaf re-drying production line, tobacco shred packing line, or reconstituted tobacco production line packaging section, the cartons are stacked on pallets and transported to the loading station. The corresponding lifting equipment lifts the pallet, and the robotic arm removes the top layer of cartons. Each time a carton is removed, the lifting equipment lifts the pallet a little higher. Therefore, the height of the cartons needs to be relatively accurate.

[0003] Currently, old cardboard boxes are usually recycled for reuse. However, when a large number of old cardboard boxes are stacked flat, the accumulated height of the box lids becomes significantly lower than the accumulated height of the box bodies. This height difference, once it reaches a certain level, affects the operation of the cardboard box opening and packing system, requiring manual assistance (such as manually raising the box lids) at the box loading station. Therefore, there is an urgent need for a cardboard box lid height adjustment device to solve the problem of the height difference between the box lids and the box bodies after stacking old cardboard boxes. Summary of the Invention

[0004] To address the aforementioned issues, the inventors have provided a carton lid height adjustment device and method that automatically compensates for the height difference between the lid and the carton body, thereby facilitating the carton opening and packing system's loading robotic arm to grasp the carton.

[0005] According to a first aspect, the present invention provides a carton lid height adjustment device, comprising a tray on which cartons are folded and stacked, and further comprising:

[0006] The lifting assembly is located at one end of the pallet, corresponding to the position of the carton lid, and is used to lift the carton lid.

[0007] The high-position detection switch is located at the upper box station of the carton opening and packing system and is connected to the carton opening and packing control system.

[0008] The low-position detection switch is located at the upper box station of the carton opening and packing system, and its position is lower than that of the high-position detection switch. The low-position detection switch is connected to the carton opening and packing control system.

[0009] The low-position detection switch and the high-position detection switch are used to detect the top layer of the cigarette box lid on the pallet. If the low-position detection switch does not detect the cigarette box lid, the lifting assembly rises to drive the carton lid to rise; if the high-position detection switch detects the cigarette box lid, the lifting assembly descends to drive the carton lid to descend.

[0010] Furthermore, the tray includes: a frame and supports for supporting the frame, the supports being located on both sides of the frame.

[0011] Furthermore, the lifting assembly includes:

[0012] Support component, located at one end of the pallet, is used to support the carton lid;

[0013] A guide component, disposed on the frame, serves to guide the support member;

[0014] A drive unit, mounted on the bracket, is used to raise and lower the support unit.

[0015] Furthermore, the guiding component includes:

[0016] Two lifting guide wheels are symmetrically arranged on the frame and are located at both ends of the support member;

[0017] Two sliding bodies, corresponding to two lifting guide wheels, are configured to rise and fall along with the support components.

[0018] Furthermore, the support member is a smooth-surfaced cylinder.

[0019] Furthermore, the support member has connecting plates at both ends, and the driving member includes an airbag located below the connecting plates.

[0020] Furthermore, a guide rail is provided below the pallet, and a positioning guide wheel is provided at the upper box station of the carton opening and box-packing system. The guide rail and the positioning guide wheel cooperate to guide and position the pallet.

[0021] Furthermore, the height difference between the high-position detection switch and the low-position detection switch is 10-130mm.

[0022] According to a second aspect, the present invention also provides a method for adjusting the height of a carton lid, comprising:

[0023] The carton unpacking and packing control system obtains the pallet number of the loading station that enters the carton unpacking and packing system;

[0024] The high-position detection switch and the low-position detection switch detect the lid of the top carton on the pallet in real time;

[0025] If the low-position detection switch does not detect the cigarette box lid, the carton opening and box-packing control system controls the lifting component of the corresponding pallet according to the pallet number to raise the carton lid, so that the cigarette box lid is between the high-position detection switch and the low-position detection switch.

[0026] If the high-position detection switch detects the cigarette box lid, the carton opening and packing control system controls the lifting component of the corresponding pallet according to the pallet number to lower the carton lid, so that the cigarette box lid is between the high-position detection switch and the low-position detection switch.

[0027] Working principle of the invention:

[0028] The lids of the top cartons on the pallet are monitored in real time by high-position and low-position detection switches. If the low-position detection switch does not detect the lid of the cartons, the lifting assembly rises to lift the lids of the cartons. If the high-position detection switch detects the lids of the cartons, the lifting assembly descends to lower the lids of the cartons, thus compensating for the height difference between the lids and the cartons.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] The carton lid height adjustment device provided by this invention can effectively compensate for the height difference between the carton lid and the carton body caused by stacking, realize the full automation of the carton opening and packing system, improve the degree of automation, and help improve the success rate of packing. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the carton lid height adjustment device in Example 1;

[0032] Figure 2 This is a schematic diagram of the tray structure in Example 1;

[0033] Figure 3 This is a front view of the tray in Example 1;

[0034] Figure 4 This is a schematic diagram of the cardboard boxes being naturally stacked on the pallet in Example 1;

[0035] Figure 5 This is a side view of the cartons naturally stacked on the pallet in Example 1;

[0036] Figure 6 This is a side view of the cartons naturally stacked on the pallet in Example 1.

[0037] Figure label:

[0038] 1-Workstation column; 11-Lifting platform; 13-Positioning guide wheel; 2-Pattern; 21-Frame; 22-Bracket; 23-Guide rail; 24-Outrigger; 3-Lifting assembly; 31-Roller; 32-Connecting plate; 33-Airbag; 34-Sliding body; 35-Lifting guide wheel; 41-Low position photoelectric switch; 42-High position photoelectric switch; 51-Box body; 52-Box cover. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0040] Example 1

[0041] like Figure 1 As shown, this invention provides a carton lid height adjustment device, including a tray 2, a lifting assembly 3 mounted on the tray 2, and a high-position photoelectric switch 42 and a low-position photoelectric switch 41 located on the upper carton station column 1 of the carton opening and packing system. The high-position photoelectric switch 42 and the low-position photoelectric switch 41 are connected to the carton opening and packing control system. The high-position photoelectric switch 42 is located above the low-position photoelectric switch 41, with a height difference of 10-130mm. In this embodiment, the high-position photoelectric switch 42 is 40mm higher than the low-position photoelectric switch 41, and the high-position photoelectric switch 42 is 20mm higher than the uppermost carton 51. This ensures that the height of the carton 51 is exactly between the high-position photoelectric switch 42 and the low-position photoelectric switch 41. This arrangement allows the lid 52 to stop at the high position and rise at the low position, compensating for the tilt angle of the lid 52. This facilitates robot positioning and gripping, as well as the coordinates after folding the carton, thus satisfying the subsequent carton packing function.

[0042] After recycling, the old cardboard boxes are folded and stacked on pallet 2, and then transported by forklifts or mobile robots to the loading station of the cardboard box unpacking and packing system. The loading station is equipped with a station column 1, which is equipped with a lifting platform 11. The lifting platform 11 is driven to rise and fall by a chain and sprocket. After the pallet 2 enters the loading station, it is located on the lifting platform 11. After the loading robot arm takes away a box, the lifting platform 11 raises the pallet 2 once to allow the cardboard box to be taken away by the robot arm.

[0043] Specifically, each pallet 2 has a unique number. When a pallet 2 enters the workstation, the control system acquires its number. During the loading process, the high-position photoelectric switch 42 and the low-position photoelectric switch 41 continuously monitor the lid 52 of the top carton. If the low-position photoelectric switch 41 fails to detect the lid 52 of the carton, ... Figure 4-5 As shown, at this time, the top cover 52 is tilted downwards. The control system can then accurately control the lifting assembly 3 on the corresponding tray 2 to rise, causing the carton cover 52 to rise; if the high-position photoelectric switch 42 detects the carton cover 52, such as... Figure 6 As shown, at this time, the top box cover 52 is tilted upward. The lifting component 3 descends, causing the box cover 52 to descend, thereby compensating for the height difference between the box cover 52 and the box body 51. This solves the problem of the height difference between the box cover 52 and the box body 51 caused by the stacking of boxes, making it easier for the robotic arm to grasp and improving the success rate of loading boxes.

[0044] Specifically, such as Figure 2-3As shown, the pallet 2 includes a frame 21 and supports 22 for supporting the frame 21, with the supports 22 located on both sides of the frame 21. The frame 21 can be made of steel pipe, wood, plastic, or other materials. The bottom of the frame 21 is provided with guide rails 23 and legs 24, which cooperate with the supports 22 to jointly support the frame 21. Corresponding positioning guide wheels 13 can be configured at the upper pallet station. The positioning guide wheels 13 cooperate with the guide rails 23 to ensure the accuracy of the pallet 2's position after entering the station. A groove is formed on one side of the frame 21, and the lifting assembly 3 is located in this groove. Under normal conditions, the lifting assembly 3 is in a low position. In this embodiment, the lifting assembly includes a roller 31, an air bladder 33, and a guide assembly. The roller 31 has connecting plates 32 at both ends. The air bladder 33 is located below the connecting plates 32 and rests on the support 22. The air bladder 33 drives the lifting and lowering of the roller 31. It is connected to an inflation / deflation unit. Its working principle involves filling a sealed pressure cylinder with inert gas or an oil-gas mixture, making the pressure inside the cavity several times or tens of times higher than atmospheric pressure. The piston rod moves due to the pressure difference generated by the cross-sectional area of ​​the piston rod being smaller than that of the piston. It should be noted that the support component includes, but is not limited to, the roller 31. Smooth cylindrical objects such as round tubes or round bars can also be used to minimize damage to the cover 52. The lifting and lowering drive of the support component includes, but is not limited to, driving through the air bladder 33. It can also be achieved through cylinders, hydraulic cylinders, geared motors, etc., and is not limited here.

[0045] Furthermore, the guide assembly includes: two lifting guide wheels 35 fixedly mounted on the frame 21 and two sliding bodies 34 fixedly mounted on the bottom of the roller 31. The sliding bodies 34 correspond one-to-one with the lifting guide wheels 35. The sliding bodies 34 rise and fall with the roller 31, and play a guiding and limiting role in the rise and fall of the roller 31.

[0046] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A carton lid height adjustment device, comprising a tray on which folded cartons are stacked, characterized in that, Also includes: The lifting assembly is located at one end of the pallet, corresponding to the position of the carton lid, and is used to lift the carton lid. The high-position detection switch is located at the upper box station of the carton opening and packing system and is connected to the carton opening and packing control system. The low-position detection switch is located at the upper box station of the carton opening and packing system, and its position is lower than that of the high-position detection switch. The low-position detection switch is connected to the carton opening and packing control system. The low-position detection switch and the high-position detection switch are used to detect the top layer of the cigarette box lid on the tray. If the low-position detection switch does not detect the cigarette box lid, the lifting component rises and drives the carton lid to rise. If the high-position detection switch detects the cigarette box lid, the lifting component descends and drives the carton lid to descend, so that the cigarette box lid is located between the high-position detection switch and the low-position detection switch. The tray includes: a frame and supports for supporting the frame, the supports being located on both sides of the frame; The lifting assembly includes: Support component, located at one end of the pallet, is used to support the carton lid; A guide component, disposed on the frame, serves to guide the support member; A drive unit, mounted on the bracket, is used to raise and lower the support member; The guiding component includes: Two lifting guide wheels are symmetrically arranged on the frame and are located at both ends of the support member; Two sliding bodies, corresponding to two lifting guide wheels, are configured to rise and fall along with the support components; The support member is a smooth cylinder; The pallet is equipped with a guide rail underneath, and the carton opening and box-setting system has a positioning guide wheel at the box-loading station. The guide rail and the positioning guide wheel cooperate to guide and position the pallet.

2. The carton lid height adjustment device as described in claim 1, characterized in that, The support member has connecting plates at both ends, and the driving member includes an airbag located below the connecting plates.

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