Auxiliary centering device for primary and secondary trays

Abstract

The utility model provides an auxiliary centering device for a primary tray and a secondary tray, belongs to the field of logistics storage, and provides a solution for improving centering adjustment of relative positions of the primary tray and the secondary tray so as to realize previous auxiliary centering operation when the trays need to be folded and unfolded to assist in improving smooth proceeding of subsequent tray folding and unfolding procedures. And therefore, the whole tray conveying efficiency and the production economy are effectively improved, and the layout design of the whole conveying production line is more reasonable and flexible. Comprising a machine body frame, a motor driving assembly and a movable frame assembly which is in driving connection with the motor driving assembly and can reciprocate in the horizontal direction of the machine body frame are arranged on the machine body frame, and a collision block base plate used for pushing a sub-tray is connected to the tail end of the movable frame assembly in the moving direction.

Description

Technical Field

[0001] This utility model relates to a novel device for lateral positioning assistance of mother and child pallets in a pallet conveying system, belonging to the field of logistics and warehousing. Background Technology

[0002] In the logistics and warehousing sector, automation and intelligent control technologies are developing rapidly. Conventional pallet conveyor production lines often involve the simultaneous transport of mother and child pallets. The conveyor docking equipment has strict requirements regarding the relative position of the mother and child pallets; otherwise, it will significantly impact the production line's efficiency.

[0003] To ensure precise alignment of conveying equipment such as depalletizers and palletizers, specialized equipment for lateral alignment and correction of mother and child pallets is needed to adapt to automated secondary positioning. For example, to avoid collisions when unpacking and stacking child pallets, auxiliary alignment from upstream equipment is required to facilitate the smooth operation of downstream processes.

[0004] Pallet alignment equipment significantly impacts the operational efficiency of pallet conveying production lines. To optimize the overall line layout, existing technologies have incorporated numerous positioning improvements. For example, the earlier patent application CN110844424A employs a conventional photoelectric positioning method, which is sensitive to light-colored pallets but suffers from signal triggering delays due to lower reflectivity on dark-colored pallets, resulting in a positioning error ≥15mm. This overall solution exhibits significant limitations in accuracy. Similarly, the earlier patent application CN111470231A uses a mechanical clamping positioning device that easily causes pallet edge wear; after 2000 operations, the pallet crack incidence rate was >5%, indicating insufficient equipment flexibility. Finally, the earlier patent application CN113581885A utilizes a full servo drive scheme, consuming 2.3 kWh per hour, resulting in low energy efficiency and failing to meet current national standards for green logistics equipment.

[0005] In view of the above, this patent application is hereby filed. Utility Model Content

[0006] The auxiliary centering device for mother and child pallets described in this utility model aims to solve the problems existing in the prior art by proposing a solution to improve the centering adjustment of the relative position of mother and child pallets. It is intended to achieve pre-construction auxiliary centering operation when pallets need to be disassembled and stacked to assist in the smooth progress of subsequent pallet disassembly and stacking processes, thereby effectively improving the overall pallet conveying efficiency and production economy, and making the layout design of the entire conveying production line more reasonable and flexible.

[0007] To achieve the above design objectives, the auxiliary centering device for the mother and child trays includes a body frame, a motor drive assembly, a movable frame assembly driven and connected by the motor drive assembly and capable of reciprocating along the horizontal direction of the body frame, and a collision block pad for pushing the child tray connected to the end of the movable frame assembly in the moving direction.

[0008] Furthermore, a photoelectric detection component is provided on one side of the movable frame component with an adjustable connection position.

[0009] Furthermore, a set of front and rear limiting arm assemblies and a set of photoelectric detection arm assemblies are symmetrically arranged on both sides of the mobile frame assembly, with the photoelectric detection assembly installed on one side of the photoelectric detection arm assembly.

[0010] Furthermore, the output end of the motor drive assembly is axially connected to a set of drive sprocket assemblies, a set of driven sprocket seat assemblies is installed on the machine frame, a chain is connected in a closed loop between the drive sprocket assembly and the driven sprocket seat assembly, a set of movable connecting assemblies is fixedly connected to the chain, and the movable connecting assemblies are also fixedly connected to the movable frame assembly.

[0011] Furthermore, at least one set of movable guide rails is provided on the top of the body frame, and the bottom of the movable frame assembly is slidably connected to the movable guide rails via a slider.

[0012] Furthermore, a set of outwardly protruding slider anti-detachment plates are respectively installed at both ends of the moving guide rail.

[0013] Furthermore, at least one set of mother tray guide assemblies with bent guide extensions is fixedly installed on one side of the body frame.

[0014] Furthermore, an array of frame adjustment seats is installed at the bottom of the machine frame to adjust the vertical height in conjunction with the conveyor roller line.

[0015] Furthermore, a drive protection cover assembly is provided on one side of the motor drive assembly mounting location on the body frame for protection.

[0016] Furthermore, a protective cover assembly for the mobile frame is connected to the outside of the mobile frame assembly.

[0017] In summary, the mother-daughter tray-assisted centering device proposed in this application has the following advantages:

[0018] 1. This application adopts a motor-driven moving frame that moves as a whole while sensors precisely control the moving frame's position. With a dual-insurance structure of "photoelectric sensing + mechanical limit", the centering accuracy is still within 10mm even under dark pallet conditions, and the controllability is high.

[0019] 2. The equipment of this application has low energy consumption. The front end of the mobile frame component is equipped with a polyurethane buffer pad, which can effectively absorb kinetic energy and protect the tray. The power consumption of two devices of this application used simultaneously is 0.5 kW·h / h, which is relatively low.

[0020] 3. This application adopts a dual-guide rail synchronous drive mechanism, which can reduce the lateral offset tolerance to ±1.5mm (GB / T

[0021] The 19001-2016 standard requires ±5mm, which improves the overall equipment compliance constraint performance. Attached Figure Description

[0022] The present invention will now be further described in conjunction with the following accompanying drawings.

[0023] Figure 1 This is a schematic diagram of a pallet conveyor line using the mother-daughter pallet auxiliary centering device described in this application;

[0024] Figure 2 This is a schematic diagram of the auxiliary centering device for mother and child trays described in this application;

[0025] In the above figures, 1. Auxiliary centering device for mother and child pallets; 2. Conveying roller conveyor; 3. Steel mother pallet; 4. Wooden child pallet; 1.1 Machine frame; 1.2 Motor drive assembly; 1.3 Moving connection assembly; 1.4 Driven sprocket seat assembly; 1.5 Moving guide rail; 1.6 Moving frame assembly; 1.7 Front and rear limit arm assembly; 1.8 Photoelectric detection arm assembly; 1.9 Photoelectric detection assembly; 1.10 Mother pallet guide assembly; 1.11 Impact block pad; 1.12 Frame adjustment seat; 1.13 Slider anti-detachment plate; 1.14 Drive protective cover assembly; 1.15 Moving frame protective cover assembly. Detailed Implementation

[0026] Example 1, such as Figure 1 and Figure 2 As shown, this application proposes a mother-daughter pallet auxiliary alignment device 1 for pallet conveying and mother-daughter pallet stacking / unstacking operations. Two sets of mother-daughter pallet auxiliary alignment devices 1 are symmetrically arranged on both sides of the conveyor roller conveyor 2. A number of steel mother pallets 3 and wooden daughter pallets 4 are conveyed in a linear direction on the conveyor roller conveyor 2. Before the mother-daughter pallet stacking / unstacking operation, the two sets of mother-daughter pallet auxiliary alignment devices 1 simultaneously push the mother-daughter pallets from one side to the middle, thereby performing an alignment adjustment operation.

[0027] Specifically, each set of auxiliary centering devices 1 for mother and child trays includes a body frame 1.1 fixed to the ground. A motor drive assembly 1.2 is mounted on the body frame 1.1. A movable frame assembly 1.6, driven by the motor drive assembly 1.2 and capable of reciprocating horizontally along the body frame 1.1, is connected to the movable frame assembly 1.6 at its moving end for pushing the child tray 4. The impact pad 1.11 contacts the child tray and can be made of non-metallic material such as polyurethane to achieve a Shore hardness of A65±3. The impact pad 1.11 absorbs the kinetic energy generated by the impact and protects the child tray 4 from damage.

[0028] Driven by the motor drive assembly 1.2, the moving frame assembly 1.6 is pushed out horizontally along the machine frame 1.1. The sub-pallets 4 are pushed from both sides by the impact pads 1.11 of the two sets of sub-pallets auxiliary centering devices 1 on both sides, which can perform centering adjustment more accurately to facilitate subsequent stacking and unstacking operations.

[0029] To improve the accuracy of the moving distance of the moving frame assembly 1.6, this application adopts a "photoelectric sensing" control method, that is, a photoelectric detection assembly 1.9 is movably connected to one side of the moving frame assembly 1.6. The photoelectric detection assembly 1.9 can be installed by screws and its installation position can be adjusted according to the different sizes of the sub-trays 4, thereby realizing photoelectric detection at different positions, while being compatible with various specifications of sub-trays 4.

[0030] To further improve the accuracy of the moving distance of the movable frame assembly 1.6, this application adopts a control method of "photoelectric sensing + mechanical limiting". Specifically, a set of front and rear limiting arm assemblies 1.7 and a set of photoelectric detection arm assemblies 1.8 are symmetrically arranged on both sides of the movable frame assembly 1.6. The photoelectric detection assembly 1.9 is installed on the photoelectric detection arm assembly 1.8 with screws. Thus, the front and rear limiting arm assemblies 1.7 provide safety protection for the movable frame assembly 1.6 on one side to prevent it from being thrown out in case of photoelectric detection failure. The photoelectric detection arm assembly 1.8, in addition to being used for adjustable mounting of the photoelectric detection assembly 1.9, also has the same effect as the front and rear limiting arm assemblies 1.7; that is, both provide safety protection from one side simultaneously.

[0031] To ensure the efficient and stable operation of the moving frame assembly 1.6, a set of driving sprocket assemblies is axially connected to the output end of the motor drive assembly 1.2. A set of driven sprocket seat assemblies 1.4 is installed on the body frame 1.1. A chain is connected in a closed loop between the driving sprocket assembly and the driven sprocket seat assembly 1.4. A set of moving connection assemblies 1.3 is fixedly connected to the chain. The moving connection assemblies 1.3 are also fixedly connected to the moving frame assembly 1.6. Driven by the motor drive assembly 1.2, the moving frame assembly 1.6 is driven by the chain and the moving connection assemblies 1.3 to push the impact pad 1.11 horizontally along the body frame 1.1. The impact pad 1.11 pushes the sub-tray 4 from one side.

[0032] To improve the smoothness of the reciprocating movement of the moving frame assembly 1.6 in the horizontal direction, two sets of symmetrically distributed moving guide rails 1.5 are provided on the top of the body frame 1.1, and the bottom of the moving frame assembly 1.6 is slidably connected to the moving guide rails 1.5 by at least two sets of sliders.

[0033] To prevent the slider from slipping off the moving guide rail 1.5, a set of protruding slider anti-slip plates 1.13 can be installed at both ends of the moving guide rail 1.5.

[0034] A set of mother pallet guide assembly 1.10 with a bent guide extension is fixedly installed on one side of the body frame 1.1. When the mother pallet 3 carries the child pallet 4 and is conveyed on the conveyor roller line 2 to the side of the mother and child pallet auxiliary centering device 1, the lateral guide of the mother pallet guide assembly 1.10 can be used to initially guide and limit the flow of the mother pallet 3.

[0035] Four sets of frame adjustment seats 1.12 are installed at the bottom of the machine frame 1.1 to adjust the vertical height in conjunction with the conveyor roller line 2.

[0036] A drive protection cover assembly 1.14 is provided on one side of the motor drive assembly 1.2 mounting location on the body frame 1.1 for protection.

[0037] A protective mobile frame shield assembly 1.15 is connected externally to the mobile frame assembly 1.6.

[0038] Based on the structural design of the aforementioned mother-daughter pallet auxiliary centering device 1, this application applies it to the centering and adjustment operation of the mother pallet 3 and daughter pallet 4 on the conveyor roller line 2. The specific process is as follows:

[0039] The mother and child pallets are conveyed and rotated along the conveyor roller line 2. After the photoelectric sensor detects the position and sends a signal, it controls the roller drive motor to stop the mother and child pallets at the two sets of mother and child pallet auxiliary centering devices 1.

[0040] When the equipment starts, the motor drive assembly 1.2 drives the chain, which in turn drives the moving frame assembly 1.6 via the moving connection assembly 1.3 to push out the front impact pad 1.11, thereby pushing the sub-pallet 4. To ensure that the sub-pallet 4 is not damaged and to reduce the cushioning, the front and rear limit arm assemblies 1.7 on the machine frame 1.1 can be adjusted, and the photoelectric detection assembly 1.9 can be used in conjunction with signal feedback to achieve closed-loop control, thereby ensuring the relative position of the sub-pallet 4 on the mother pallet 3.

[0041] Subsequently, after the photoelectric sensor detects the signal, the motor drive assembly 1.2 reverses the drive chain and drives the moving frame assembly 1.6 to retract and reset via the moving connection assembly 1.3.

[0042] A reset signal is sent to conveyor roller line 2, and the mother and child pallet stacks continue to move forward.

[0043] The mother-daughter tray auxiliary centering device 1 proposed in this application has a power consumption of only 0.25 kW·h / h for a single unit. The overall equipment operates efficiently, accurately and stably, and has good application prospects.

[0044] The embodiments described above, in conjunction with the accompanying drawings, are merely preferred solutions for achieving the objectives of this utility model. Those skilled in the art can draw inspiration from this and directly derive other alternative structures that conform to the design concept of this utility model. Other structural features derived therefrom should also fall within the scope of the solutions described in this utility model.

Claims

1. A centering device for mother and child trays, characterized in that: It includes a body frame, on which a motor drive assembly is provided, a movable frame assembly driven by the motor drive assembly and capable of reciprocating along the horizontal direction of the body frame, and a collision block pad for pushing the sub-tray is connected to the end of the movable frame assembly in the moving direction.

2. The centering device for mother and child trays according to claim 1, characterized in that: A photoelectric detection component is provided on one side of the movable frame component, with its connection position adjustable.

3. The auxiliary centering device for mother and child trays according to claim 2, characterized in that: A set of front and rear limiting arm assemblies and a set of photoelectric detection arm assemblies are symmetrically arranged on both sides of the mobile frame assembly, with the photoelectric detection assembly installed on one side of the photoelectric detection arm assembly.

4. The auxiliary centering device for mother and child trays according to claim 1, characterized in that: The output end of the motor drive assembly is axially connected to a set of drive sprocket assemblies, and a set of driven sprocket seat assemblies is installed on the machine frame. A chain runs in a closed loop between the drive sprocket assembly and the driven sprocket seat assembly. A set of movable connecting assemblies is fixedly connected to the chain, and the movable connecting assemblies are also fixedly connected to the movable frame assembly.

5. The auxiliary centering device for mother and child trays according to claim 1, characterized in that: At least one set of movable guide rails is provided on the top of the body frame, and the bottom of the movable frame component is slidably connected to the movable guide rails by a slider.

6. The auxiliary centering device for mother and child trays according to claim 5, characterized in that: A set of outward-protruding slider anti-detachment plates are set at both ends of the moving guide rail.

7. The auxiliary centering device for mother and child trays according to claim 1, characterized in that: At least one set of mother tray guide assemblies with bent guide extensions is fixedly installed on one side of the body frame.

8. The centering device for mother and child trays according to claim 1, characterized in that: An array of frame adjustment seats is installed at the bottom of the machine frame to adjust the vertical height in conjunction with the conveyor roller line.

9. The auxiliary centering device for mother and child trays according to claim 1, characterized in that: A drive protection cover assembly is provided on one side of the motor drive assembly mounting location on the body frame for protection.

10. The centering device for mother and child trays according to claim 1, characterized in that: A protective cover assembly for the mobile frame is connected to the outside of the mobile frame component.

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