Intelligent transfer type automatic feeding platform capable of achieving centralized feeding

Abstract

The utility model provides an intelligent transfer type automatic feeding platform capable of achieving centralized feeding, belongs to the technical field of plastic extruding machine corollary equipment, and solves the problem that a traditional manual feeding mode is insufficient. A feeding transfer layer plate of the feeding platform is erected above the plastic extruding machine through a frame body, and the plastic extruding machine is provided with a feeding port in the vertical direction. A feeding opening is formed in the vertical projection position, corresponding to the feeding opening, of the feeding transfer layer plate, and the feeding opening communicates with the feeding opening; an elevator is arranged on one side of the feeding and transferring layer plate and is used for lifting or descending the ton bag between the ground and the feeding and transferring layer plate; the conveyors are respectively arranged at a ground entrance and exit of the elevator and an entrance and exit of the feeding and transferring layer plate, and are used for inputting and outputting ton bags at the elevator; the AGV trolley is used for transferring ton bags on the feeding transfer layer plate; according to the utility model, the manual intervention can be reduced, the key functions of continuous feeding, energy consumption reduction, material tracking and the like are realized, and the efficiency of the extrusion molding process and the product effect are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting equipment for extruders, is applied to the feeding scene of extruders, and is specifically an intelligent transfer type automatic feeding platform for realizing centralized feeding. Background Art

[0002] In the current extrusion process, the traditional approach to raw material supply has significant technical defects and efficiency bottlenecks. Specifically, it is widely used to manually transport large bags of insulation materials from the storage area to the extruder with the help of forklifts, place them on the ground, and then extract the insulation materials through the extruder's suction device to achieve the feeding process. However, this feeding method has a series of deep-seated problems:

[0003] 1. High energy consumption feeding: Since this method relies on human-driven forklifts to carry out relatively long and frequent bag handling, it not only directly consumes energy, but also may lead to discontinuous operation of the extruder due to the influence of the periodic interval between the handling efficiency and the handling volume, which indirectly increases the standby energy consumption of the extruder, which runs counter to the current concept of energy conservation and emission reduction.

[0004] 2. Inefficient raw material handling and feeding methods: The manual handling of ton bags is complicated and time-consuming, which cannot ensure that the extruder can obtain raw materials continuously and stably, making it difficult to achieve continuous and uninterrupted production of the extrusion production line, seriously affecting the overall production efficiency.

[0005] 3. Noise pollution: Forklift operation and ton bag material transfer process will generate a lot of noise, which not only poses a continuous potential threat to the physical and mental health of workers at the extruder, but also is not conducive to building a relatively quiet and comfortable industrial production environment, and may violate relevant noise control regulations and standards.

[0006] 4. Difficulties in 5S management in workshops: During the manual loading and unloading process, the dispersion and residue of materials are often difficult to avoid, resulting in a decrease in the cleanliness of the production workshop and increasing the difficulty of 5S (sorting, reorganizing, sweeping, cleaning, and quality) management; at the same time, since the forklift will be too close to the extruder equipment and the work area of ​​​​the personnel, it may also cause safety hazards.

[0007] 5. Material contamination and dispersion risks: Ton bags cannot be used cleanly in one go. During multiple opening and closing processes, the materials are easily contaminated by the external environment, and may cause mixing or loss of various types of materials inside, affecting the extrusion effect and reducing the quality and stability of the final product.

[0008] 6. Lack of traceability mechanism: The existing manual feeding method cannot provide effective material traceability means, and it is difficult to accurately track the use of each batch of materials, which poses a serious obstacle to product quality control, abnormal cause analysis and responsibility tracing.

[0009] In summary, the field of extrusion technology urgently needs a new solution to reform the raw material supply mode of the extruder in the direction of automation, informatization, continuous efficiency, so as to adapt to the requirements of modern manufacturing industry for lean, green and intelligent production. Utility Model Content

[0010] Based on the current status of the background technology, in order to solve the various drawbacks caused by the traditional feeding method of manual direct transfer to the extruder and manual direct feeding, the utility model proposes an intelligent transfer type automatic feeding platform for realizing centralized feeding. The platform combines the characteristics of the feed port of the extruder to realize two-layer overhead transfer, and combines with automated intelligent equipment such as conveyor belts, elevators and AGV to complete the automatic continuous feeding process of the extruder. The utility model can greatly reduce manual intervention, realize continuous feeding, reduce energy consumption and material tracking and other key functions, so that the efficiency of the extrusion process and the product effect are improved.

[0011] The utility model adopts the following technical solutions to achieve the purpose:

[0012] An intelligent transfer automatic feeding platform for realizing centralized feeding, the feeding platform comprising a frame, a feeding transfer layer, an elevator, a conveyor and an AGV trolley; the feeding transfer layer is erected above an extruder through the frame, the extruder has a feed port, and the feeding direction of the feed port is vertical; a feed port is opened at a vertical projection position of the feeding transfer layer corresponding to the feed port, and the feed port is communicated with the feed port; the elevator is arranged on one side of the feeding transfer layer, and the elevator is used for lifting or lowering ton bags between the ground and the feeding transfer layer; the conveyor is respectively arranged at the ground entrance and exit of the elevator and the entrance and exit of the feeding transfer layer, and is used for inputting and outputting the ton bags at the elevator; the AGV trolley is used for transferring the ton bags on the feeding transfer layer.

[0013] Furthermore, the feeding platform also includes a feeding control system, which is communicatively connected to the extruder, the conveyor, the elevator and the AGV trolley; the communication connection mode between the feeding control system and the AGV trolley is wireless communication connection.

[0014] Furthermore, an opener and a weighing device are arranged in sequence above the feed port in the vertical direction, and a channel for discharging materials in the ton bag is formed in the middle of the opener and the weighing device; the opener is used to open the bottom of the ton bag, so that the material in the ton bag passes through the channel, the feed port and the hopper and enters the feed port; the weighing device is used to carry the ton bag during unloading, and to weigh the current weight of the ton bag in real time; a sealer is also provided on the feed transfer layer, and the sealer is used to seal the opening of the ton bag after unloading; the feed control system is communicatively connected with the opener, the weighing device and the sealer.

[0015] Preferably, there are multiple feed ports and multiple supply ports, and the multiple supply ports are opened along the length direction of the feed transfer layer plate and are located on the central axis of the feed transfer layer plate to jointly form a feed working area; the two sides of the feed working area are respectively a feed buffer area and a recovery buffer area, and in the feed buffer area and the recovery buffer area, multiple brackets are arranged along the length direction of the feed transfer layer plate; the brackets in the feed buffer area are used to carry the ton bags that have not been unloaded, and the brackets in the recovery buffer area are used to carry the ton bags that have been unloaded.

[0016] In summary, due to the adoption of this technical solution, the beneficial effects of the utility model are as follows:

[0017] 1. Continuous and efficient feeding method: By setting up a two-story overhead platform above the extruder and using the side elevator and conveyor belt, the automatic and continuous transmission of ton bags from the ground to the feeding position on the top of the extruder is realized. After the elevator lifts the ton bag full of materials to the second-story platform, it uses the pre-deployed AGV car to accurately cache it and transport it to the preset position above the extruder aligned with the feed port, thereby ensuring the continuity and efficiency of the feeding process and improving production efficiency; supplemented by the platform buffer area, extremely short cycle loading and unloading, and hopper capacity support, it solves the problem of feeding interruption caused by traditional manual handling.

[0018] 2. Dynamic caching and material circulation: The second-floor platform is equipped with sufficient caching areas to temporarily store a large number of fully loaded or empty ton bags, realizing dynamic management and flexible scheduling of materials. Empty ton bags can also be smoothly lowered to the ground through the elevator and removed by the conveyor belt, ensuring the smooth operation of the entire feeding platform, reducing downtime caused by changing ton bags, and further improving the operating efficiency of the extruder.

[0019] 3. Intelligent material management: This utility model introduces technologies such as flow meters, weighing devices and related information collection components, which can monitor the material supply flow in real time, realize accurate measurement and intelligent control process, and combine the feedback of the extruder's own information data to dispatch AGV to realize the transfer of ton bags, ensuring the continuity and accuracy of the material supply process.

[0020] 4. Automatic unpacking and sealing: The platform is combined with relevant technologies of automatic unpacking and sealing equipment for ton bags, which can not only ensure the efficient and pollution-free transfer of materials, but also ensure the timely closure and proper disposal of empty bags to prevent material waste and environmental pollution. At the same time, the recycling of empty bags is relatively convenient, which is in line with the concept of circular economy in industrial production.

[0021] 5. Improve working environment and 5S management: Through the fully automated and informationized material supply and processing process, the intensity of manual labor can be reduced, and the noise pollution, material dispersion and safety hazards caused by manual operation can be eliminated, so that the 5S management of the workshop can be effectively implemented, creating a safer, more comfortable and efficient production environment.

[0022] It can be seen that the feeding platform of the utility model not only realizes continuous, efficient, automatic and intelligent feeding, but also pays attention to the principles of energy conservation, environmental protection and lean production. It is an effective improvement and perfection of the traditional extruder feeding technology and has good social industrial production economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the feeding platform of the utility model;

[0024] Figure 2 This is a front view of the feeding platform of the utility model;

[0025] Figure 3 It is a top view of the feeding platform of the utility model;

[0026] Figure 4 It is a schematic diagram of the extruder side structure of the feeding platform of the utility model;

[0027] Figure 5 It is a schematic diagram of the structure of the elevator side of the feeding platform of the utility model.

[0028] The meanings of the symbols in the accompanying drawings are as follows:

[0029] 1-frame, 2-feeding and transferring layer, 3-elevator, 4-conveyor, 5-AGV trolley, 6-extruder, 7-feeding port, 8-ton bag, 9-hopper, 10-flow meter, 11-opener, 12-weigher, 13-sealer, 14-bracket, 15-charging base, 16-path line, 17-barcode scanner, 18-information code, 19-conveyor, 20-lifting and transferring mechanism, 21-stacker. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example

[0033] like Figure 1 As shown, an intelligent transfer automatic feeding platform for realizing centralized feeding includes a frame 1, a feeding transfer layer plate 2, an elevator 3, a conveyor 4 and an AGV trolley 5; the feeding transfer layer plate 2 is erected above the extruder 6 through the frame 1, and the extruder 6 has a feed port 7, and the feeding direction of the feed port 7 is a vertical direction; a feed port is opened at the vertical projection position of the feeding transfer layer plate 2 corresponding to the feed port 7 (blocked in the figure, not shown), and the feed port is connected with the feed port 7; a elevator 3 is arranged on one side of the feeding transfer layer plate 2, and the elevator 3 is used for lifting or lowering ton bags 8 between the ground and the feeding transfer layer plate 2; the conveyor 4 is respectively arranged at the ground entrance and exit of the elevator 3 and the entrance and exit of the feeding transfer layer plate 2, and is used for the input and output of ton bags 8 at the elevator 3; the AGV trolley 5 is used to transfer ton bags 8 on the feeding transfer layer plate 2.

[0034] In this embodiment, Figure 1 , Figure 2 As shown, the specific configuration structure can be that two extruders 6 perform centralized and continuous feeding work; each extruder 6 has two feed ports 7. In other configuration scenarios, it is only necessary to ensure that the number of feed ports 7 is the same as that of the supply ports and they are set one by one.

[0035] In order to realize an automated and intelligent feeding process, the feeding platform also includes a feeding control system, which is communicatively connected to the extruder 6, the conveyor 4, the elevator 3 and the AGV trolley 5; the communication connection method between the feeding control system and the AGV trolley 5 is a wireless communication connection.

[0036] In this embodiment, the feed port is connected to the feed port 7 through the hopper 9, and the top of the hopper 9 is fixedly connected to the lower surface of the feed transfer layer plate 2. In order to accurately monitor and control the feed rate, a flow meter 10 is provided on the outer wall of the hopper 9, and the flow meter 10 is used to measure the material flow through the hopper 9; the flow meter 10 is connected to the feed control system in communication, and due to the connection of the extruder 6, this method can ensure the stability and accuracy of the feeding process, which means that the feeding process and the working state of the extruder 6 can be closely linked to ensure that the extruder always obtains a suitable and stable supply of raw materials, thereby improving production efficiency.

[0037] like Figure 1 , Figure 4 As shown, an opener 11 and a weighing device 12 are arranged in sequence along the vertical direction above the feed port, and a channel for discharging materials in the ton bag 8 is formed in the middle of the opener 11 and the weighing device 12; the opener 11 is used to open the bottom of the ton bag 8, so that the materials in the ton bag 8 pass through the channel, the feed port and the hopper 9 and enter the feed port 7; the weighing device 12 is used to carry the ton bag 8 during unloading, and to weigh the current weight of the ton bag 8 in real time; a sealer 13 is also provided on the feeding transfer layer plate 2, and the sealer 13 is used to seal the opening of the ton bag 8 after unloading; the feeding control system is communicatively connected with the opener 11, the weighing device 12 and the sealer 13.

[0038] The weighing device 12 carries and monitors the weight change of the ton bag 8 in real time during the unloading process, so that the discharge of the material can be accurately grasped, whether the material is blocked or the supply is abnormal, and whether the material is blocked or the supply is abnormal, so as to adjust the feeding speed or troubleshoot the problem in time, thereby improving the stability and efficiency of the feeding. Through real-time weighing, the interruption of feeding caused by material blockage can be effectively prevented, further ensuring the continuous and stable operation of the extruder 6, and indirectly improving the quality of the final product.

[0039] like Figure 3 As shown, the four feed ports corresponding to the two extruders 6 in this embodiment are opened along the length direction of the feed transfer layer plate 2, and are located on the central axis of the feed transfer layer plate 2, together forming a feed working area; the two sides of the feed working area are respectively a feed buffer area and a recovery buffer area, in which a plurality of brackets 14 are arranged along the length direction of the feed transfer layer plate 2; the brackets 14 in the feed buffer area are used to carry undischarged ton bags 8, and the brackets 14 in the recovery buffer area are used to carry discharged ton bags 8.

[0040] By dividing the area of ​​the feeding and transfer layer 2, its limited space resources can be fully utilized to ensure the smoothness and continuity of material input and output, and avoid mutual interference between different operation stages. By setting up an independent recycling buffer area, it is ensured that the empty tonnage bags that have completed unloading can be quickly transferred and properly stored, avoiding the confusion of empty tonnage bags and fully loaded tonnage bags, which helps to keep the site clean and reduce safety hazards.

[0041] In addition, the recycling buffer area specially set up in this embodiment means that the unloaded ton bags are uniformly managed and recycled, which is conducive to the subsequent cleaning, sorting and recycling of packaging materials, and is in line with the principles of circular economy and resource conservation; in the long run, the recycling and reuse of ton bags can not only save the cost of purchasing new packaging materials, but also has the potential to bring additional economic benefits, such as overall large-scale sales.

[0042] In this embodiment, Figure 3 , Figure 4 As shown, a transfer moving channel is formed between the feeding buffer area and the feeding working area, and between the recovery buffer area and the feeding working area, and the AGV cart 5 transfers the ton bag 8 in the transfer moving channel; a charging base 15 for charging the AGV cart 5 is provided in the feeding buffer area and the recovery buffer area, and the feeding control system is communicated and connected to the charging base 15; a path line 16 for marking the transfer moving channel is also drawn on the upper surface of the feeding transfer layer plate 2.

[0043] For the AGV trolley 5, specifically, the type of the trolley is a forklift-type lifting AGV, and the lifting height range of the fork of the forklift-type lifting AGV matches the conveying surface height of the conveyor 4, the bearing surface height of the bracket 14 and the weighing device 12; the forklift-type lifting AGV is provided with a fork and a barcode scanner 17 on the front of the body; when the AGV trolley uses the fork to fork the ton bag 8, the barcode scanner 17 is used to scan the information code 18 set on the side wall of the ton bag 8; the feeding control system is communicated with the barcode scanner 17.

[0044] After the barcode scanner 17 scans the information code 18, it can obtain important data such as the type, batch number, production date, expiration date, weight, etc. of the materials in the ton bag 8 required by the extruder 6, ensuring the accuracy of material handling and avoiding the problem of incorrect handling or mixing of materials. By recording the unique identity information of each ton bag 8 through the information code 18, real-time material tracking can be achieved, which is convenient for transparent management of the entire supply chain. Especially when quality problems occur, the source of the material can be quickly traced back to conduct effective quality control. The combination of the barcode scanner 17 and the information code 18 greatly enhances the intelligence of the AGV trolley 5 and the refined management level of the material handling link, which is of great significance to improving production efficiency, ensuring production quality, reducing costs, and realizing digital and information-based modern factory management.

[0045] like Figure 5As shown, in the present embodiment, there are two sets of elevators 3, and the two sets of elevators 3 are arranged along the width direction of the feeding transfer layer plate 2; one set of elevators 3 corresponds to the transfer moving channel setting of the feeding buffer area, and the other set of elevators 3 corresponds to the transfer moving channel setting of the recovery buffer area; the number of AGV carts 5 is therefore set to two, which are respectively responsible for the internal transfer work of the feeding buffer area and the recovery buffer area.

[0046] In this embodiment, a conveyor 19 for carrying and conveying ton bags 8 is provided in the car of the elevator 3, and the conveyor 19 is matched with the conveyor 4 to form a conveying and lifting path for the ton bags 8 from the ground to the feeding and transferring layer 2; the conveying direction of the conveyor 4 arranged at the ground entrance and exit of the elevator 3 is the width direction of the feeding and transferring layer 2, and there is a lifting and transferring mechanism 20 corresponding to the ground entrance and exit of the elevator 3, and the lifting and transferring mechanism 20 is matched with the conveyor 19; the conveyor 4 arranged on the ground is also provided with a stacker 21 at the end along its conveying direction, and the stacker 21 is used to stack and store the corresponding pallets left after the ton bags 8 are taken away after unloading.

[0047] In summary, in the entire feeding platform, the only process involving manual contact is to fork the ton bags 8 and their pallets at the input of the conveyor 4 set on the ground, and to take away the exhausted ton bags 8 and stacked pallets separately at the end of the conveyor 4. The remaining processes are carried out centrally and continuously under the control of the feeding control system. Combined with the application of the conveyor 4 in the industry, it can also ensure that the ton bags 8 are continuously delivered at its input, thereby providing a centralized and continuous feeding process for the extruder 6, which not only ensures the production efficiency, but also ensures the quality of the extruded products.

Claims

1. An intelligent transfer type automatic feeding platform for realizing centralized feeding, characterized in that: The feeding platform comprises a frame (1), a feeding transfer layer plate (2), an elevator (3), a conveyor (4) and an AGV trolley (5); the feeding transfer layer plate (2) is erected above an extruder (6) through the frame (1); the extruder (6) has a feeding port (7); the feeding direction of the feeding port (7) is vertical; a feeding port is provided at a position of the feeding transfer layer plate (2) corresponding to the vertical projection position of the feeding port (7); the feeding port is connected to the feeding port (7). The elevator (3) is arranged on one side of the feeding and transferring layer (2), and the elevator (3) is used to lift or lower the ton bag (8) between the ground and the feeding and transferring layer (2); the conveyor (4) is respectively arranged at the ground entrance and exit of the elevator (3) and the entrance and exit of the feeding and transferring layer (2), and is used for inputting and outputting the ton bag (8) at the elevator (3); the AGV trolley (5) is used to transfer the ton bag (8) on the feeding and transferring layer (2); The feeding platform further comprises a feeding control system, wherein the feeding control system is communicatively connected to the extruder (6), the conveyor (4), the elevator (3) and the AGV trolley (5); the communication connection mode between the feeding control system and the AGV trolley (5) is wireless communication connection; The feed port is connected to the feed port (7) through a hopper (9), and the top of the hopper (9) is fixedly connected to the lower surface of the feed transfer layer plate (2); a flow meter (10) is arranged on the outer wall of the hopper (9), and the flow meter (10) is used to measure the flow rate of the material flowing through the hopper (9); the flow meter (10) is connected to the feed control system in communication; An opener (11) and a weighing device (12) are arranged in sequence above the feed port in the vertical direction, and a channel for discharging materials in the ton bag (8) is formed in the middle of the opener (11) and the weighing device (12); the opener (11) is used to open the bottom of the ton bag (8) so that the materials in the ton bag (8) pass through the channel, the feed port and the hopper (9) and enter the feed port (7); the weighing device (12) is used to carry the ton bag (8) during unloading and to weigh the current weight of the ton bag (8) in real time; the feed control system is communicatively connected to the opener (11) and the weighing device (12).

2. According to claim 1, the intelligent transfer type automatic feeding platform for realizing centralized feeding is characterized in that: The feed inlet (7) and the supply inlet are both provided in plurality, the number of the two being the same and being arranged in one-to-one correspondence.

3. The intelligent transfer type automatic feeding platform for realizing centralized feeding according to claim 1 is characterized in that: The feed transfer layer plate (2) is also provided with a sealer (13), and the sealer (13) is used to seal the opening of the ton bag (8) after unloading; the feed control system is communicatively connected to the sealer (13).

4. The intelligent transfer type automatic feeding platform for realizing centralized feeding according to claim 2, characterized in that: A plurality of feed openings are opened along the length direction of the feed transfer layer plate (2) and are located on the central axis of the feed transfer layer plate (2), together forming a feed working area; the two sides of the feed working area are respectively a feed buffer area and a recovery buffer area, in which a plurality of brackets (14) are arranged along the length direction of the feed transfer layer plate (2); the brackets (14) in the feed buffer area are used to carry the undischarged ton bags (8), and the brackets (14) in the recovery buffer area are used to carry the undischarged ton bags (8).

5. The intelligent transfer type automatic feeding platform for realizing centralized feeding according to claim 4, characterized in that: A transfer moving channel is formed between the feeding buffer area and the feeding working area, and between the recovery buffer area and the feeding working area, and the AGV trolley (5) transfers ton bags (8) in the transfer moving channel; a charging base (15) for charging the AGV trolley (5) is provided in the feeding buffer area and the recovery buffer area, and the feeding control system is communicatively connected to the charging base (15); a path line (16) for marking the transfer moving channel is also drawn on the upper surface of the feeding transfer layer plate (2).

6. The intelligent transfer type automatic feeding platform for realizing centralized feeding according to claim 5, characterized in that: The type of the AGV trolley (5) is a forklift-type lifting AGV, and the lifting height range of the fork of the forklift-type lifting AGV matches the conveying surface height of the conveyor (4), the bearing surface height of the bracket (14) and the weighing device (12); the front of the body of the forklift-type lifting AGV is provided with a fork and a barcode scanner (17); when the AGV trolley uses the fork to fork the ton bag (8), the barcode scanner (17) is used to scan the information code (18) set on the side wall of the ton bag (8); the feeding control system is communicatively connected to the barcode scanner (17).

7. The intelligent transfer type automatic feeding platform for realizing centralized feeding according to claim 6, characterized in that: There are two sets of the elevators (3), which are arranged along the width direction of the feeding transfer layer plate (2); one set of the elevators (3) is arranged corresponding to the transfer moving channel of the feeding buffer area, and the other set of the elevators (3) is arranged corresponding to the transfer moving channel of the recovery buffer area; the number of the AGV carts (5) is two.

8. The intelligent transfer type automatic feeding platform for realizing centralized feeding according to claim 7, characterized in that: A conveyor (19) for carrying and conveying the ton bag (8) is arranged in the elevator car (3), and the conveyor (19) matches the conveyor (4) to form a conveying and lifting path for the ton bag (8) from the ground to the feeding and transferring layer (2); the conveying direction of the conveyor (4) arranged at the ground entrance and exit of the elevator (3) is the width direction of the feeding and transferring layer (2), and a lifting and transferring mechanism (20) is provided at the ground entrance and exit corresponding to the elevator (3), and the lifting and transferring mechanism (20) matches the conveyor (19); a stacking machine (21) is also arranged at the end of the conveyor (4) arranged on the ground along its conveying direction, and the stacking machine (21) is used to stack and store the corresponding pallets left after the ton bag (8) is taken away after unloading.

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