Intelligent gantry transfer system for lead stack downline

Abstract

The utility model relates to a kind of intelligent truss transfer system for lead pile off-line, belong to intelligent equipment field, the utility model includes off-line truss, ground check scale and transfer RGV;The off-line truss one end vertical bridging in the upper of lead pile production line, the other end bridging in the upper of the running track of transfer RGV, ground check scale is set in the middle directly below truss;The ground check scale is composed of two flat platform scale stacks: the track of transfer RGV is installed on ground, perpendicular to off-line truss, with lead pile production line parallel;The utility model can realize lead pile intelligent off-line transfer, weighing measurement data automatic storage to host computer management system, then off-line truss moves lead pile again to transfer RGV warehousing, realizes the transfer of point-to-point lead pile, replaces traditional manual forklift and overhead crane operation, replaces manpower, improves the degree of automation, avoids the risk of equipment and manual cross operation, substantially reduces the input of manpower cost.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent equipment, specifically, it relates to an intelligent truss transfer system for lead stack unloading. Background Technology

[0002] Traditionally, lead stacks are manually lifted off the production line using forklifts or overhead cranes. Since each shift involves 6-8 hours of continuous production, multiple people are needed to assist in manually lifting lead stacks with forklifts and using overhead cranes to move them back and forth between the production line and the storage area. Furthermore, during the storage of lead stacks, manual recording and inventory checks are required. During shipment, manual assistance is needed to lift the stacks from the warehouse, weigh them, and then manually affix labels printed by a labeling machine to both sides of the stack before lifting them from the weighing platform to the truck for loading. Simultaneously, manual assistance is required for unloading. Before loading, manual verification of truck information, manual printing of loading lists, and manual counting of the loading status are necessary.

[0003] The process of placing lead stacks into the warehouse is crucial. Due to the limited area of ​​the storage area, if manual forklifts are used, the forklifts can only place the stacks on the ground gradually from the farthest point in the warehouse, and sufficient turning radius must be allowed for the forklifts to turn around easily. When manually counting or sampling lead stacks, it is not easy to remove lead stacks inside the warehouse. When loading trucks with manual forklifts, it is also only possible to start from one end of the warehouse and gradually move the lead stacks inwards, rather than selecting and loading according to the loading list as needed.

[0004] If overhead cranes are used to transport goods into the warehouse, the personnel responsible for attaching and unloading the cranes need to travel back and forth between the lead stack unloading point and the warehouse area, increasing the workload. Alternatively, assigning dedicated personnel to attach the cranes on the production line and unload them in the warehouse area would further increase labor costs. When loading goods out of the warehouse, dedicated personnel would also need to be assigned to unload the cranes on the trucks. If lead stacks need to be shipped out simultaneously with production, the situation of crane and manual labor working in parallel would increase, adding many safety risks.

[0005] The traditional process of receiving and issuing lead stacks involves manual recording and inventory checks, which is prone to errors. Furthermore, processing inventory and loading data manually is complex and requires multiple verifications and comparisons. When labeling shipments, the lead stacks are first manually lifted onto a platform scale using a forklift or overhead crane. The scale's weight information is then sent to a labeling machine for label printing. The labels are then manually affixed to both sides of the lead stack before it is lifted from the scale or hoisted onto the truck for loading. Weighing, label printing, labeling, and loading—each step requires manual assistance and confirmation.

[0006] The inventory management of lead stacks requires data sharing with the upper-level management system. The traditional approach is to manually upload information and manually print documents. Utility Model Content

[0007] To overcome the problems existing in the background technology, this utility model provides an intelligent truss transfer system for lead stack unloading. It can realize intelligent unloading and transfer of lead stacks, automatically store the weighing and measurement data to the upper computer management system, and then the unloading truss moves the lead stack to the transfer RGV for storage. It realizes point-to-point transfer of lead stacks, replaces the traditional manual forklift and overhead crane operation, replaces manpower, improves the degree of automation, avoids the risk of cross-operation between equipment and manpower, and greatly reduces the input of labor costs.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: The intelligent truss transfer system for lead stack unloading includes an unloading truss, a ground verification scale, and a transfer RGV; The lower line truss is vertically connected at one end to the top of the lead stack production line, and at the other end to the running track of the transfer RGV. The ground check is located directly below the middle of the truss. The aforementioned ground calibration scale consists of two flat platform scales stacked on top of each other: The RGV transfer track is installed on the ground, perpendicular to the lower truss and parallel to the lead stack production line.

[0009] Preferably, the intelligent truss transfer system for lead stack unloading also includes a control unit, which includes a controller and monitoring equipment connected to the controller and installed on the lead stack production line, the unloading truss, and the transfer RGV. The monitoring equipment includes a proximity switch, an encoder, and a photoelectric sensor.

[0010] Preferably, the encoder is installed on the motor shaft of the lead stack production line, the drive motor shaft of the unloading truss, the drive motor shaft of the trolley, the hoisting motor shaft of the telescopic pole, and the drive motor shaft of the transfer RGV; photoelectric switches are installed at the conveyor tail end of the lead stack production line and the ground calibration scale.

[0011] Preferably, the lower truss is equipped with a trolley that can run along the high-altitude track of the truss. The trolley has a telescopic rod that can extend and retract vertically, and a clamp is connected below the telescopic rod.

[0012] Preferably, the fixture includes a fixture frame and grippers; a track frame is provided on the side of the fixture frame; the grippers are slidably connected to the track frame via a running rod A; the tails of two telescopic cylinders are installed opposite each other, and the telescopic rods of the telescopic cylinders are connected to the grippers.

[0013] The beneficial effects of this utility model are: This utility model uses a truss to replace the traditional manual forklift or overhead crane for hoisting lead stacks into the warehouse. At the same time, before the lead stacks are put into the warehouse, each lead stack is weighed by a ground calibration scale set under the truss, and the weight can be directly stored in the warehouse management system. No further weighing is required during the loading process.

[0014] By setting up a ground calibration scale consisting of two stacked platform scales, the weighing calibration function is realized, making the weighing data more accurate.

[0015] By coordinating the offline truss with the transfer RGV, point-to-point transfer of lead stacks is achieved, replacing traditional manual forklift and overhead crane operations. This eliminates manpower, increases automation, avoids the risks of overlapping operations between equipment and manual labor, and significantly reduces labor costs. Attached Figure Description

[0016] Figure 1 This is a system schematic diagram of this utility model; Figure 2 This is a front view of the lower truss device of this utility model; Figure 3 This is a top view of the lower truss device of this utility model; Figure 4 This is a side view of the lower truss device of this utility model; Figure 5 This is a structural diagram of the clamping fixture for the lower truss device of this utility model; Figure 6 This is a schematic diagram showing the positional relationship between the lower truss and the transfer RGV of this utility model; Figure 7 This is a schematic diagram showing the positions of the two platform scales of this utility model; Figure 8 This is a diagram showing the clamping and lifting state of the weights according to this utility model; Remark: Figure 1 The arrows in the text indicate the direction of lead stack transport; In the diagram: 1-Lowering truss, 2-Ground verification scale; 3-Transfer RGV; 4-RGV track; 5-Weights, 6-Trolley, 7-Telescopic rod, 8-Clamp, 9-Frame track, 10-Winder, 11-Running wheel A, 12-Telescopic cylinder, 13-Running wheel B, 14-Lead stack production line, 15-Lead stack, 16-Gripper. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] In the description of this utility model, unless otherwise stated, the terms "upper" and "lower" indicate the orientation or state relationship based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The original manual forklift or overhead crane lifting method used on the lead stack production line involved a high degree of manual intervention and posed a high risk of personal injury due to the cross-operation of equipment and personnel. In addition, the weighing of lead stacks when they leave the warehouse, are loaded onto trucks, and are shipped takes up shipping time. When loading, matching the current weight of the lead stacks to the loading weight of the truck is a complicated manual calculation. When loading manually, forklifts or overhead cranes are used, requiring multiple workers such as crane operators, labelers, and unloaders to work together, resulting in a large number of personnel and serious cross-operation.

[0021] Based on the actual needs of lead stack production and shipping sites and the characteristics of the production process, an intelligent transfer truss device system for lead stack unloading was designed. The intelligent truss automatically picks up the lead stacks from the production line and unloads them, while simultaneously pre-weighing the stacks. Then, an RGV (Automated Guided Vehicle) transports the lead stacks to the storage area. The main design scheme is as follows: Figure 1 As shown.

[0022] The intelligent truss transfer system for lead stack unloading includes an unloading truss device, a ground verification scale, and a transfer RGV.

[0023] The track of the transfer RGV is parallel to the lead stack production line. One end of the lower line truss is vertically connected above the lead stack production line, and the other end is vertically connected above the running track of the transfer RGV. The ground calibration scale is located directly below the middle of the lower line truss. The lower line truss is used to transport the lead stacks from the lead stack production line to the transfer RGV, which then transports the lead stacks into the warehouse. The ground calibration scale weighs the lead stacks.

[0024] Photoelectric switches are installed at the tail end of the lead stack production line and on the ground calibration scale. When the lead stack is transported to the tail end of the lead stack production line and directly below the unloading truss, the photoelectric switch detects the lead stack arrival signal and sends the signal to the lead stack production line PLC. At the same time, the lead stack production line PLC transmits the lead stack arrival signal to the truss system PLC through a relay. When the truss system receives the lead stack arrival signal, the running fixture picks up the lead stack in place and transports it to the ground calibration scale.

[0025] A photoelectric switch detects the arrival signal of the lead stack at the ground verification scale and sends the signal to the PLC of the truss system. The truss system's operating fixture places the lead stack on the ground verification scale. Once the weight of the lead stack stabilizes on the ground verification scale, the weight data is obtained and transmitted to the warehouse management system (WMS). The ground verification scale outputs a weighing completion signal to the truss system's PLC. Upon receiving the weighing completion signal, the truss system's PLC sends a loading signal to its own control system, controlling the fixture to descend, clamp the lead stack, and then rise. The lower truss then loads the lead stack onto the loading platform of the transfer RGV directly below it. After loading is complete, the lower truss sends a completion signal to the controller. Upon receiving the loading completion signal, the transfer RGV moves along the track towards the inbound conveyor line.

[0026] The RGV platform refers to the flat cargo-carrying area on top of the RGV used to support goods.

[0027] The clamping point, calibration scale platform, and RGV platform of the lead stack production line are all aligned with the longitudinal centerline of the fixture.

[0028] The unloading truss, lead stack production line, and transfer RGV all have signal interlocking functions. When the lead stack is conveyed to its position on the lead stack production line conveyor, the lead stack arrival signal from the production line PLC is simultaneously sent to the unloading truss PLC. At this time, the unloading truss clamps the lead stack into position and unloads it. This unloading must be completed within the next production line conveyor cycle time (before the next lead stack is conveyed directly below the unloading truss), otherwise it will cause production line congestion. When the unloading truss picks up the lead stack from the ground calibration scale and loads it onto the transfer RGV, the RGV PLC transmits the lead stack arrival signal below the truss to the truss PLC through the host computer, ensuring that the RGV is in the correct position when the unloading truss loads the lead stack onto the RGV platform.

[0029] The lead stack production line is equipped with photoelectric sensors to monitor the conveying status of the lead stacks and determine whether there are blockages or abnormalities in the conveying. If an abnormality is detected, the system can adjust or stop in time to avoid accidents.

[0030] Photoelectric sensors are installed along the edge of the RGV loading platform to detect whether the lead stacks are fully loaded or unloaded, ensuring the accuracy of the lead stacks during transfer and handover. If the lead stacks are not detected as being properly loaded, the RGV will not start operating to prevent the lead stacks from falling and to ensure the continuity of the system's automated operation. Lower truss device such as Figure 2 , Figure 3 , Figure 4 As shown, it is supported by 6 columns, with a frame and track at the top. The frame has racks on the sides, and a trolley on the lower truss can run along the high track of the truss. The trolley has gears that match the racks of the track, and the trolley achieves precise positioning of the running direction through gear and rack transmission.

[0031] like Figure 4 As shown, the trolley has a telescopic rod that can extend and retract vertically. The telescopic rod is raised and lowered by a winch. A clamp is connected to the bottom of the telescopic rod. The winch, mounted on the top of the trolley, drives the telescopic rod to raise and lower, thereby raising and lowering the clamp. Figure 5 As shown, the clamp includes a frame, with the left and right sides forming frame tracks. The upper end of the "L"-shaped gripper has a running wheel A that can move along the frame tracks. The opening and closing of the gripper is accomplished by a set of cylinders installed below the clamp frame. The tails of the two cylinders are mounted opposite each other, and the extension rods of the cylinders are connected to the grippers. The extension and retraction of the cylinders drives the running wheel A to move back and forth along the frame tracks, thus opening and closing the clamp. Four proximity switches detect when the grippers on both sides are in position. The lower end of the "L"-shaped gripper hooks onto the bottom step of the lead stack to achieve the gripping function. Running wheels B are located on both sides of the gripper. When the lead stack is placed on the ground and the clamp becomes stuck, the rolling friction of the running wheels B allows for quick and effortless opening.

[0032] Encoders are installed on the motor shafts of the lead stack production line, the drive motor shafts of the lower truss, the drive motor shafts of the trolley, the hoist motor shaft of the telescopic pole, and the drive motor shaft of the transfer RGV. By accurately detecting the number of rotations and angles of the motors, the encoders can calculate the operating displacement and speed of the lower truss, trolley, telescopic pole, and RGV. This provides the control unit with precise position information of the equipment, enabling the system to achieve accurate positioning and speed control.

[0033] like Figure 6 As shown, the RGV transfer track is parallel to the lead stack production line. The RGV can run back and forth on the track to transport the lead stacks off the truss line to the warehouse area for storage. The RGV's loading platform is a chain conveyor. When connecting to the grab handle under the truss to place the lead stack, the chain conveyor on the loading platform must be stationary before the RGV receives the lead stack and runs to the warehouse area for storage.

[0034] like Figure 7As shown, the platform scale consists of two stacked scales. The top scale directly reads the weight of the lead stack, while the bottom scale, after deducting the tare weight from the top scale, indirectly reads the weight of the lead stack. Under normal circumstances, the two scales should read the same value. If there is a certain allowable weighing error, it can still be considered a weight that meets the standards. The two stacked scales can cross-check their readings. If the error is too large, it indicates that one scale needs calibration or is malfunctioning. Simultaneously, calibration weights are fixedly placed near the scales. Before each shift, the scales are manually calibrated using the line gantry by manually clamping the weights. Figure 8 The image shows the weights and their state during lifting.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An intelligent truss transfer system for lead stack unloading, characterized in that, This includes the offline truss, ground verification scale, and transfer RGV; The lower line truss is vertically connected at one end to the top of the lead stack production line, and at the other end to the running track of the transfer RGV. The ground check is located directly below the middle of the truss. The aforementioned ground calibration scale consists of two flat platform scales stacked on top of each other: The RGV transfer track is installed on the ground, perpendicular to the lower truss and parallel to the lead stack production line.

2. The system according to claim 1, characterized in that, It also includes a control unit, which includes a controller and monitoring equipment connected to the controller and installed on the lead stack production line, the unloading truss, and the transfer RGV. The monitoring equipment includes proximity switches, encoders, and photoelectric sensors.

3. The system as described in claim 2, characterized in that, The encoders are installed on the motor shafts of the lead stack production line, the drive motor shafts of the unloading truss, the drive motor shafts of the trolley, the hoisting motor shafts of the telescopic pole, and the drive motor shafts of the transfer RGV; photoelectric switches are installed at the conveyor tail end of the lead stack production line and the ground calibration scale.

4. The intelligent truss transfer system for lead stack unloading according to claim 1, characterized in that, The lower truss is equipped with a trolley that can run along the high-altitude track of the truss. The trolley has a telescopic rod that can extend and retract vertically, and a clamp is connected below the telescopic rod.

5. The intelligent truss transfer system for lead stack unloading according to claim 4, characterized in that, The fixture includes a fixture frame, grippers, and two telescopic cylinders; a track frame is provided on the side of the fixture frame; the grippers are slidably connected to the track frame via a running rod A; the tails of the two telescopic cylinders are installed opposite each other, and the telescopic rods of the telescopic cylinders are connected to the grippers.

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