A front frame production line

Abstract

The application provides a front frame production line, which comprises a main frame assembly, a left wing box assembly and a right wing box assembly; the production line is divided into a first production line and a second production line arranged horizontally and side by side; the left wing box assembly is assembled and welded, and the right wing box assembly is assembled and welded on the first production line; then the assembled left wing box assembly and the right wing box assembly are installed on the main frame assembly on the second production line; then full welding operation is performed in a robot welding area; and an artificial repair welding area is arranged at the rear end of each production line to improve the overall welding quality. In particular, the first production line specifically transfers materials of the whole production line by a crane, the second production line specifically transmits by RGV, and the two production lines are further connected by AGV to realize close connection of logistics transportation, so that the logistics mode of the whole production line is significantly improved, and the transfer and transportation are more smooth and efficient.

Description

[0001] (This application is a divisional application of Chinese patent application 202310582634.1) Technical Field

[0002] This invention relates to the field of front frame manufacturing technology, and more specifically, to a front frame production line. Background Technology

[0003] The front frame of large loading equipment is significantly larger in size, which increases the manufacturing complexity. Assembly and welding require manual splicing and spot welding before the entire assembly can be fully welded. Existing production lines have limited layout options for the front frame, either assembling and welding all incoming materials directly or dividing the production into multiple lines to weld individual components separately before final assembly and welding. Regardless of the method, this significantly reduces the production line's manufacturing efficiency, especially during transfer and transport, where strict requirements are placed on the production line layout and work areas, easily leading to logistical disruptions and transportation difficulties. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a front frame production line to solve the above problems.

[0005] The present invention adopts the following solution: This application provides a front frame production line, which includes a main frame assembly, a left wing box assembly, and a right wing box assembly. The production line includes a first production line arranged in a straight line and a second production line arranged in a straight line, with the first and second production lines horizontally side-by-side and the second production line located below the first production line. The first production line is equipped with cranes for lifting the various workpieces of the front frame, and the second production line is equipped with AGVs for transport. Logistics are transferred between the first and second production lines via AGVs. The first production line includes at least a manual assembly area, a preliminary welding area, an inspection and leveling area, an assembly and assembly area, and an assembly and welding area. The assembly area is divided into sections for manually assembling the components of the left wing box assembly and the components of the right wing box assembly; the pairing assembly area is used to perform pairing assembly of the left wing box assembly and the right wing box assembly respectively; the pairing welding area is used to perform pairing welding of the left wing box assembly and the right wing box assembly respectively; the second production line includes at least an assembly pairing area and a robotic welding area, wherein the assembly pairing area is used to assemble the left wing box assembly and the right wing box assembly onto the main frame assembly and transfer them to the robotic welding area for full welding operation; wherein, manual repair welding areas are respectively provided at the rear of the pairing welding area and the robotic welding area; Based on this front frame production line, the following steps are included: S1: Input the materials of the left wing box assembly and the right wing box assembly into the manual splicing area of ​​the first production line. After manual splicing, preliminary welding and inspection and leveling, the corresponding left wing box assembly and right wing box assembly are assembled and welded out. S2: Transport the left wing box assembly and the right wing box assembly to the assembly pairing area of ​​the second production line. In the assembly pairing area, complete the corresponding installation and fixation of the left wing box assembly and the right wing box assembly on the main frame assembly. The RGV then transports the entire assembly to the robot welding area. S3: The entire assembly is fully welded through the robotic welding area, and the entire front frame is further manufactured by manual welding.

[0006] As a further improvement, the crane is positioned horizontally across each work area of ​​the first production line via a gantry beam for hoisting incoming materials to the required work area.

[0007] As a further improvement, the first production line is divided into two different production line units along the center line, which are used for the process manufacturing of the left wing box assembly and the right wing box assembly, respectively, and share the same working area only in the inspection and leveling area.

[0008] As a further improvement, the RGV runs through the entire second production line along the middle, and each side of the RGV has its own assembly pairing area and robot welding area.

[0009] As a further improvement, a buffer area is provided between the assembly assembly area and the robot welding area. The buffer area includes a rack for temporarily placing the assembly. The rack has a first support frame and a second support frame that are opposite each other. The first support frame is provided with a horizontal telescopic component, and the second support frame is provided with a lifting component. The assembly is supported and limited between the two support frames by the bottom of the main frame assembly.

[0010] As a further improvement, the RGV includes a car body mounted on a track, and magnetic and lifting components disposed on the car body, the car body being configured to lift and place the assembly on a rack in a temporary storage area.

[0011] As a further improvement, the robotic welding area includes a positioner fixture for gripping the assembly. The positioner fixture includes a body, a rotating body rotatably disposed on the body, and a clamping mechanism mounted on the rotating body. The clamping mechanism is used to grip and limit the assembly to a position suitable for welding operations.

[0012] As a further improvement, the body and the rotating body are constructed as a single positioner structure, and the clamping mechanism includes a movable support disposed inside the rotating body and a limiting component for the assembly disposed on the movable support. The limiting component is adapted to clamp and fix the assembly on the movable support, and the movable support is configured to provide the assembly with free movement in at least the left-right and up-down directions.

[0013] As a further improvement, the limiting component includes a claw member that opens and closes along the left and right sides and a locking member that moves vertically opposite each other. The locking member is adapted to be inserted into the main frame assembly of the assembly, and the claw member is adapted to grip and fix the left wing box assembly and the right wing box assembly.

[0014] As a further improvement, a logistics channel suitable for AGV transfer is formed between the first production line and the second production line, and the AGV travels back and forth in the logistics channel along the end of the first production line and the beginning of the second production line.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects: The front frame production line of this application is divided into a first production line and a second production line arranged horizontally side by side. The first production line performs assembly welding of the left wing box assembly and the right wing box assembly, respectively. Subsequently, on the second production line, the assembled left and right wing box assemblies are installed onto the main frame assembly, followed by full welding operations in a robotic welding area. Manual welding touch-up areas are provided at the rear of each production line to improve overall welding quality. Specifically, the first production line uses a crane for material transfer, while the second production line uses RGVs for transport. Furthermore, AGVs further connect the two production lines to achieve seamless logistics, significantly improving the logistics of the entire production line and making transfer and transportation smoother and more efficient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front frame production line according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the front frame workpiece in the front frame production line according to an embodiment of the present invention; Figure 3 yes Figure 2 A structural diagram from another perspective; Figure 4 This is a schematic diagram of the buffer area of ​​the front frame production line according to an embodiment of the present invention; Figure 5 yes Figure 4 Structural diagrams from other perspectives; Figure 6 This is a schematic diagram of the RGV structure of the front frame production line according to an embodiment of the present invention; Figure 7 yes Figure 6 A structural diagram from another perspective; Figure 8 This is a schematic diagram of the positioner fixture of the front frame production line according to an embodiment of the present invention; Figure 9 yes Figure 8 Structural diagrams from other perspectives; Figure 10 yes Figure 8 A schematic diagram of the clamping mechanism in the middle; Figure 11 This is a flowchart of the front frame production line according to an embodiment of the present invention.

[0017] icon: 1-First production line; 2-Second production line; 3-Crane; 4-RGV; 5-AGV; 6-Manual assembly area; 7-Preliminary welding area; 8-Inspection and leveling area; 9-Assembly and assembly area; 10-Assembly and welding area; 11-Assembly assembly area; 12-Robot welding area; 13-Manual repair welding area; 14-Buffer area; 15-First support frame; 16-Second support frame; 17-Horizontal telescopic assembly; 18-Lifting assembly; 19-Vehicle body; 20-Magnetic suction component; 21-Lifting component; 22-Machine body; 23-Rotating body; 24-Moving bracket; 25-Claw component; 26-Clamping component; 27-Logistics channel; A1-Main frame assembly; A2-Left wing box assembly; A3-Right wing box assembly. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. 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 claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example Combination Figures 1 to 11 This embodiment provides a front frame production line, which includes a main frame assembly A1, a left wing box assembly A2, and a right wing box assembly A3.

[0020] The production line includes a first production line 1 arranged in a straight line and a second production line 2 arranged in a straight line. The first production line 1 and the second production line 2 are arranged horizontally side by side, with the second production line 2 located below the first production line 1. The first production line 1 is equipped with cranes 3 for lifting the workpieces of the front frame, and the second production line 2 is equipped with RGV4 for transportation. The first production line 1 and the second production line 2 are connected by AGV5 for material transfer.

[0021] The first production line 1 includes at least a manual assembly area 6, a preliminary welding area 7, an inspection and leveling area 8, an assembly and assembly area 9, and an assembly and welding area 10. The manual assembly area 6 is divided into areas for manually assembling the workpieces of the left wing box assembly A2 and the workpieces of the right wing box assembly A3. The assembly and assembly area 9 is used to perform assembly and assembly of the left wing box assembly A2 and the right wing box assembly A3, respectively. The assembly and welding area 9 is used to perform assembly and welding of the left wing box assembly A2 and the right wing box assembly A3, respectively.

[0022] The second production line 2 includes at least an assembly assembly area 11 and a robotic welding area 12. The assembly assembly area 11 is used to assemble the left wing box assembly A2 and the right wing box assembly A3 onto the main frame assembly A1, and then transfer them to the robotic welding area 12 for full welding operations. Furthermore, manual repair welding areas 13 are respectively provided at the rear of the assembly welding area 10 and the robotic welding area 12.

[0023] like Figure 11 As shown, based on this front frame production line, the following steps are included: S1: Input the materials of the left wing box assembly A2 and the right wing box assembly A3 into the manual splicing area 6 of the first production line 1. After manual splicing, preliminary welding and inspection and leveling, the corresponding left wing box assembly A2 and right wing box assembly A3 are assembled and welded out. S2: The left wing box assembly A2 and the right wing box assembly A3 are transported to the assembly pairing area 11 of the second production line 2. The left wing box assembly A2 and the right wing box assembly A3 are installed and fixed on the main frame assembly A1 in the assembly pairing area 11. The entire assembly is then transported to the robot welding area 12 by RGV4. S3: The entire front frame is manufactured by performing full welding operations on the 12 pairs of assemblies through robotic welding area, and further completed by manual welding.

[0024] The aforementioned front frame production line is divided into a first production line 1 and a second production line 2 arranged horizontally side by side. On the first production line 1, the left wing box assembly A2 and the right wing box assembly A3 are assembled and welded. Then, on the second production line 2, the assembled left wing box assembly A2 and right wing box assembly A3 are installed onto the main frame assembly A1, followed by full welding operations in the robotic welding area 12. Manual welding areas 13 are provided at the rear of each production line to improve overall welding quality. Specifically, the first production line 1 uses a crane 3 for material transfer, while the second production line 2 uses an RGV4 for transport. Furthermore, the two production lines are closely connected by an AGV5, significantly improving the logistics of the entire production line and making transfer and transportation smoother and more efficient.

[0025] Specifically, the front frame production line includes: transferring incoming workpieces to the manual assembly area 6 via crane 3, where they are spliced ​​and spot-welded to form the left wing box assembly A2 and the right wing box assembly A3. The preliminarily welded left wing box assembly A2 and right wing box assembly A3 are then hoisted by crane 3 to the inspection and leveling area 8 for further inspection of flatness and integrity. After confirmation, the left wing box assembly A2 and right wing box assembly A3 are hoisted to the assembly and splicing area 9 for further installation of all associated workpieces to complete the entire left wing box assembly A2 and right wing box assembly A3. This process continues until the assembly and welding area 10 is used for comprehensive welding operations to obtain the final left wing box assembly A2 and right wing box assembly A3. Subsequently, in the manual repair welding area 13 at the end of the assembly and welding area 10, the left wing box assembly A2 and right wing box assembly A3 undergo further manual inspection and repair welding to avoid missed welds. The left wing box assembly A2 and the right wing box assembly A3 are transferred to the assembly pairing area 11 of the second production line 2 via AGV5. The left wing box assembly A2 and the right wing box assembly A3 are installed on the main frame assembly A1 in the assembly pairing area 11. The assembly is then transferred to the robot welding area 12 via RGV4 for full welding of the entire assembly to obtain the final front frame. The front frame is further inspected and repaired in the manual welding area 13 at the rear of the robot welding area 12, thereby realizing the process production and manufacturing of the front frame.

[0026] In this embodiment, the crane 3 is horizontally positioned across each work area of ​​the first production line 1 via a gantry beam, used to lift incoming materials to the required work area. Clearly, the gantry beam spans across the entire first production line 1, and the crane 3 is mounted on the gantry beam via guide rails, correspondingly covering the entire work area.

[0027] In this embodiment, the first production line 1 is divided into two different production line units along the center line, which are used for the manufacturing of the left wing box assembly A2 and the right wing box assembly A3, respectively, and share the same working area only within the inspection and leveling area 8. Specifically, the manual splicing area 6 is divided into two production line units, one above and one below; the preliminary welding area 7 is divided into two production line units, one above and one below; the assembly splicing area 9 is divided into two production line units, one above and one below; and the assembly welding area 10 is divided into two production line units, one above and one below. Each upper production line unit connects to form a production line for the left wing box assembly A2, and each lower production line unit connects to form a production line for the right wing box assembly A3, thereby significantly improving the production efficiency of the first production line 1.

[0028] In this embodiment, the RGV4 runs through the entire second production line 2 along its center. Each side of the RGV4 has its own assembly assembly area 11 and robotic welding area 12. Each side can complete the production of its own front frame assembly. The entire production line can be controlled via a single RGV4, significantly reducing manufacturing costs and allowing for a more compact layout.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, a buffer area 14 is provided between the assembly assembly area 11 and the robot welding area 12. The buffer area 14 includes a rack for temporarily placing assemblies. The rack has a first support frame 15 and a second support frame 16 facing each other. The first support frame 15 is provided with a horizontal telescopic component 17, and the second support frame 16 is provided with a lifting component 18. The assembly is positioned between the two support frames by being lifted and limited by the bottom of the main frame assembly A1. Correspondingly, the RGV4 includes a vehicle body 19 mounted on a track, and a magnetic suction component 20 and a lifting component 21 disposed on the vehicle body 19. The vehicle body 19 is configured to lift and place the assembly on the rack in the temporary storage area.

[0030] As described above, the buffer area 14 can hold the assembly transmitted from the RGV4 in standby mode until the robot welding area 12 completes the welding operation, after which the assembly in the buffer area 14 is quickly transferred into the buffer area. For example... Figure 6 and Figure 7As shown, to ensure smooth transfer of the assembly by the RGV4, a magnetic suction component 20 is provided on the vehicle body 19 for magnetic fixation. The magnetic fixation is released when placement is required, facilitating assembly transfer. A lifting component 21, in conjunction with the magnetic suction component 20, provides stable support to the bottom of the main frame assembly A1. The lifting component 21 is further configured to adaptively adjust its position to match various sizes of front frame assemblies. Furthermore, to accommodate front frame assemblies of various sizes, the rack has a horizontal telescopic component 17 on the first support frame 15 for adjusting the support length, and a lifting component 18 on the second support frame 16 for adjusting the support height, facilitating the temporary storage of front frame assemblies of different sizes on the rack.

[0031] Preferably, the lifting component 18 is engaged with the assembly by means of a pin, and the horizontal telescopic component 17 is engaged with the assembly by means of surface contact.

[0032] like Figures 8 to 10 As shown, in this embodiment, the robot welding area 12 includes a positioner fixture for gripping the assembly. The positioner fixture includes a body 22, a rotating body 23 rotatably disposed on the body 22, and a clamping mechanism mounted on the rotating body 23. The clamping mechanism is used to grip and limit the assembly to a position suitable for welding operations.

[0033] Specifically, the body 22 and the rotating body 23 are constructed as a single positioner structure. The clamping mechanism includes a movable support 24 disposed inside the rotating body 23 and a limiting component for the assembly disposed on the movable support 24. The limiting component is adapted to clamp and fix the assembly on the movable support 24, and the movable support 24 is configured to provide the assembly with free movement in at least the left-right and up-down directions.

[0034] Furthermore, the limiting component includes a claw 25 that opens and closes horizontally and a locking member 26 that moves vertically and oppositely. The locking member 26 is adapted to be inserted into the main frame assembly A1 of the assembly, and the claw 25 is adapted to grip and fix the left wing box assembly A2 and the right wing box assembly A3. On one hand, gripping and limiting the front frame assembly within the movable support 24 facilitates further all-around welding operations on the front frame assembly in conjunction with the welding robot. On the other hand, the front frame assembly has greater flexibility in its positioner structure; in conjunction with the movable support 24, the front frame assembly can be programmed and controlled to the required processing position, improving the efficiency of the entire welding process.

[0035] like Figure 1As shown, in this embodiment, a logistics channel 27 suitable for the transfer of AGV5 is formed between the first production line 1 and the second production line 2. The AGV5 travels back and forth within the logistics channel 27 along the end of the first production line 1 and the beginning of the second production line 2. It can be understood that the AGV5 is provided with a lifting area suitable for the stable placement of the left wing box assembly A2 and the right wing box assembly A3, making its transmission within the logistics channel 27 safer and more reliable.

[0036] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A front frame production line, characterized in that, The front frame includes a main frame assembly, a left wing box assembly, and a right wing box assembly; the production line includes a first production line arranged in a straight line and a second production line arranged in a straight line, the first and second production lines are arranged horizontally side by side, and the second production line is located below the first production line; the first production line is equipped with cranes for hoisting the various workpieces of the front frame throughout its entire length, and the second production line is equipped with RGVs for transportation throughout its entire length, and the first and second production lines are connected by AGVs for material transport; The first production line includes at least a manual assembly area, a preliminary welding area, an inspection and leveling area, an assembly and assembly area, and an assembly and welding area. The manual assembly area is divided into areas for manually assembling the workpieces of the left wing box assembly and for manually assembling the workpieces of the right wing box assembly. The assembly and assembly area is used to perform assembly and assembly of the left wing box assembly and the right wing box assembly, respectively. The assembly and welding area is used to perform assembly and welding of the left wing box assembly and the right wing box assembly, respectively. The second production line includes at least an assembly assembly area and a robotic welding area. The assembly assembly area is used to assemble the left and right wing box assemblies onto the main frame assembly and then transfer them to the robotic welding area for full welding. Manual welding areas are provided at the rear of both the assembly assembly area and the robotic welding area. A crane is positioned horizontally across each work area of ​​the first production line via a gantry beam to lift incoming materials to the required work area. An RGV runs through the entire second production line along its central section, with assembly assembly areas and robotic welding areas on either side of the RGV. A logistics channel suitable for AGV movement is formed between the first and second production lines, and the AGV travels back and forth within this logistics channel along the end of the first production line and the beginning of the second production line. Based on this front frame production line, the following steps are included: In the manual assembly area of ​​the first production line, the workpieces of the left wing box assembly and the right wing box assembly are input respectively. After manual assembly, preliminary welding and inspection and leveling, the corresponding left wing box assembly and right wing box assembly are assembled and welded out. The left and right wing box assemblies are transported to the assembly pairing area of ​​the second production line. In the assembly pairing area, the left and right wing box assemblies are installed and fixed on the main frame assembly. The RGV then transports the entire assembly to the robot welding area. The entire assembly is fully welded in the robotic welding area, and the entire front frame is then manufactured by manual welding.

2. The front frame production line according to claim 1, characterized in that, The first production line is divided into two different production line units along the center line, which are used for the process manufacturing of the left wing box assembly and the right wing box assembly, respectively, and share the same work area only in the inspection and leveling area.

3. The front frame production line according to claim 1, characterized in that, A buffer area is provided between the assembly assembly area and the robot welding area. The buffer area includes a rack for temporarily placing the assembly. The rack has a first support frame and a second support frame that are opposite each other. The first support frame is provided with a horizontal telescopic component, and the second support frame is provided with a lifting component. The assembly is supported and limited between the two support frames by the bottom of the main frame assembly.

4. The front frame production line according to claim 3, characterized in that, The RGV includes a car body mounted on a track, and magnetic and lifting components mounted on the car body. The car body is configured to lift and place the assembly on a rack in a temporary storage area.

5. The front frame production line according to claim 1, characterized in that, The robotic welding area includes a positioner fixture for gripping assemblies. The positioner fixture includes a body, a rotating body rotatably mounted on the body, and a clamping mechanism mounted on the rotating body. The clamping mechanism is used to grip and limit the assembly to a position suitable for welding operations.

6. The front frame production line according to claim 5, characterized in that, The body and the rotating body are constructed as a single positioner structure. The clamping mechanism includes a movable support disposed inside the rotating body and a limiting component for the assembly disposed on the movable support. The limiting component is adapted to clamp and fix the assembly on the movable support, and the movable support is configured to provide the assembly with free movement in at least the left-right and up-down directions.

7. The front frame production line according to claim 6, characterized in that, The limiting component includes a claw component that opens and closes along the left and right sides and a locking component that moves vertically opposite each other. The locking component is adapted to be inserted into the main frame component of the assembly, and the claw component is adapted to grip and fix the left wing box assembly and the right wing box assembly.

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