Welding material conveying system for large box bottom plate

Abstract

The application discloses a large box bottom plate welding material conveying system and relates to the technical field of conveying equipment. The large box bottom plate welding material conveying system comprises a robot welding work station and a track. One side of the robot welding work station is provided with a base. A welding assembly for welding the large box bottom plate is arranged on the base. Fork lifting conveying tables for lifting the mine truck compartment bottom plate are arranged on both sides of the robot welding work station. The track is arranged on the other side of the robot welding work station. A lifting material track trolley for conveying the mine truck compartment bottom plate is arranged on the track. The fork lifting conveying table, the lifting material track trolley and the supporting conveying device can realize intelligent conveying of the mine truck compartment bottom plate, and the mine truck compartment bottom plate can be automatically lifted onto and lowered from the work table during work. The large box bottom plate welding material conveying system can solve the problems of mutual interference and poor operation fluency in the prior art and avoid the problem of poor welding flatness of the segmented table in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying equipment, in particular to a large box bottom plate welding material conveying system. BACKGROUND

[0002] Now the car box bottom plate welding is mainly by hand welding and robot welding, and the bottom plate circulation uses the crane and RGV mother-son trolley.

[0003] The disadvantages of the bottom plate hand welding are:

[0004] 1. After the bottom plate is spliced, it is transported to the bottom plate welding platform, and the conveying adopts the crane. Because the bottom plate welding stations are parallelly arranged in multiple stations, the bottom plate will interfere with each other when conveying the bottom plate.

[0005] 2. After the bottom plate is spliced, it is conveyed to the vicinity of the robot workstation by the RGV trolley, and the RGV son car lifts the bottom plate to transport the bottom plate to the workbench. Because the RGV son car needs to penetrate the workbench to place the bottom plate on the table surface, the workbench is a segmented table surface, and the RGV son car passes through the gap of the segmented table surface to place the bottom plate on the table surface. The segmented table surface has poor integrity, and it is difficult to realize the function of counter-deformation for different sizes of workpieces. The flatness of the bottom plate is not good.

[0006] 3. The RGV mother-son trolley conveying line needs to accurately link the beats of the front and rear stations, and basically cannot set a temporary storage section, which requires high coordination between the front and rear processes. In fact, the beat of the bottom plate in the rear transfer compartment cannot be unified with the beat of the previous welding.

[0007] The disadvantages of the car box crane hoisting are:

[0008] 1. The bottom plate circulation is not smooth;

[0009] 2. The crane hoisting exists mutual interference and needs to avoid each other;

[0010] 3. The crane hoisting of large workpieces has safety hazards;

[0011] In view of the above problems, we provide a large box bottom plate welding material conveying system to solve the above-mentioned problems. SUMMARY

[0012] The purpose of the present application is to provide a large box bottom plate welding material conveying system to solve the problems of the prior art that the bottom plate circulation is not smooth, and the crane hoisting exists mutual interference and safety hazards.

[0013] To achieve the above purpose, the present application provides the following technical scheme:

[0014] The application discloses a large box bottom plate welding material conveying system which comprises a robot welding workstation and a track.

[0015] Both sides of the robot welding workstation are provided with scissor lifting conveying tables for lifting the mine truck compartment bottom plates.

[0016] The track is arranged at the other side of the robot welding workstation, and a lifting material track trolley for conveying the mine truck compartment bottom plates is arranged on the track.

[0017] Both sides of the track are further provided with four supporting conveying devices for conveying the mine truck compartment bottom plates to the scissor lifting conveying tables.

[0018] As a further scheme of the application, the welding assembly comprises mounting base columns which are fixedly connected at both ends of the base, and support arms are fixedly connected to the upper ends of the mounting base columns near the side of the robot welding workstation, and welding robots for welding are arranged at the lower end faces of the support arms.

[0019] As a further scheme of the application, the scissor lifting conveying table comprises a supporting bottom plate, a conveying frame is arranged above the supporting bottom plate, a lifting assembly is arranged between the supporting bottom plate and the conveying frame, two first chain conveying assemblies are arranged on the conveying frame, and a first driving motor for driving the first chain conveying assemblies to run is arranged at one end of the conveying frame.

[0020] As a further scheme of the application, the lifting assembly comprises scissor arms which are arranged at positions between both ends of the conveying frame and the supporting bottom plate, and a synchronous connecting rod is further arranged between the two scissor arms, top sliding rails are fixedly connected to both ends of the conveying frame, bottom sliding rails are arranged on the side near the middle of the supporting bottom plate, two end heads of one side of the scissor arms are slidably connected to the top sliding rails and the bottom sliding rails, and a hydraulic cylinder for driving the scissor arms to open and close is arranged in the middle of the supporting bottom plate.

[0021] As a further scheme of the application, the lifting material track trolley comprises a bottom frame, an upper frame is arranged above the bottom frame, a scissor frame is arranged between the bottom frame and the upper frame, and roller assemblies for cooperating with the track are arranged at four corners of the bottom frame.

[0022] As a further scheme of the application, the roller assembly comprises a wheel frame which is fixedly connected to the four corners of the bottom frame, and power wheels for cooperating with the track are arranged at the lower end faces of the wheel frame.

[0023] As a further further scheme of the present application: the support conveying device comprises support columns, the support columns are connected with the steering arms through rotating shafts, the steering arms are provided with second chain conveying assemblies for conveying the bottom plates of the mine truck compartments at the upper ends, and the steering arms are provided with second driving motors for driving the second chain conveying assemblies to operate at one end.

[0024] As a further further scheme of the present application: the support columns are provided with gear rings at the upper ends, the steering arms are provided with driving motors with gears at the rear ends, the gears on the driving motors are engaged with the gear rings, and the driving motors are used for driving the steering arms to rotate around the support columns.

[0025] As a further further scheme of the present application: the second chain conveying assemblies and the first chain conveying assemblies are all composed of chain wheels, chains and transmission shafts.

[0026] As a further further scheme of the present application: the lower ends of the support columns are all fixedly connected with fixed plate seats.

[0027] Compared with the prior art, the present application has the beneficial effects that:

[0028] The present application can realize the intelligent conveying of the bottom plates of the mine truck compartments, the automatic loading and unloading of the bottom plates of the mine truck compartments on and off the workbench, and the smooth operation by setting the scissor lifting conveying table, the lifting material track trolley and the support conveying device, solves the mutual interference and the unsmooth operation of the prior art, and avoids the poor welding flatness of the sectional table surface of the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of the present application.

[0030] Figure 2 It is a structural schematic view of the scissor lifting conveying table in the present application.

[0031] Figure 3 It is a structural schematic view of the support conveying device in the present application.

[0032] Figure 4 It is a structural schematic view of the lifting material track trolley in the present application.

[0033] Wherein: 1, robot welding workstation; 2, welding robot; 3, support arm; 4, base; 5, mine truck bottom plate; 6, mounting base column; 7, scissor lifting conveying table; 71, synchronous connecting rod; 72, support bottom plate; 73, bottom slide rail; 74, scissor arm; 75, top slide rail; 76, hydraulic cylinder; 77, conveying frame; 78, first chain conveying assembly; 79, first drive motor; 8, lifting material track trolley; 81, upper frame; 82, wheel frame; 83, scissor frame; 84, power wheel; 85, bottom frame; 9, supporting conveying device; 91, second chain conveying assembly; 92, second drive motor; 93, steering support arm; 94, rotating column; 95, arc-shaped rack; 96, supporting column; 98, fixed plate seat; 10, track. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] Please refer to Figures 1-4 In the embodiments of the present application, the large box bottom plate welding material conveying system comprises a robot welding workstation 1 and a track 10, one side of the robot welding workstation 1 is provided with a base 4, and a welding assembly for welding the large box bottom plate is arranged on the base 4; the welding assembly comprises mounting base columns 6, the mounting base columns 6 are respectively fixedly connected at positions on both ends of the base 4, support arms 3 are fixedly connected to upper ends of the mounting base columns 6 close to one side of the robot welding workstation 1, welding robots 2 for welding are arranged at lower end faces of both ends of the support arms 3, and the welding robots 2 arranged on the support arms 3 are used to weld the mine truck bottom plate 5 during work.

[0036] The robot welding workstation 1 is provided with a scissor lifting conveying table 7 on both sides for lifting the mine truck compartment bottom plate 5; the scissor lifting conveying table 7 comprises a supporting bottom plate 72, a conveying frame 77 is arranged above the supporting bottom plate 72, a lifting assembly is arranged between the supporting bottom plate 72 and the conveying frame 77, two first chain conveying assemblies 78 are arranged on the conveying frame 77, and a first driving motor 79 is arranged at one end of the conveying frame 77 for driving the first chain conveying assembly 78 to run.

[0037] In work, the hydraulic cylinder 76 drives the scissor arm 74 to act, and the other scissor arm 74 also acts synchronously under the action of the synchronous connecting rod 71, so that the scissor arm 74 pushes the conveying frame 77 to rise or fall, thereby realizing the lifting of the mine truck compartment bottom plate 5; when the mine truck compartment bottom plate 5 needs to be conveyed, the first driving motor 79 can drive the first chain conveying assembly 78 to run, thereby realizing the feeding or discharging of the mine truck compartment bottom plate 5.

[0038] The track 10 is arranged at the other side of the robot welding workstation 1, and the lifting material track trolley 8 for conveying the mine truck compartment bottom plate 5 is arranged on the track 10; the lifting material track trolley 8 comprises a bottom frame 85, an upper frame 81 is arranged above the bottom frame 85, a scissor frame 83 is arranged between the upper frame 81 and the bottom frame 85, and a roller assembly for cooperating with the track 10 is arranged at the four corners of the bottom frame 85.

[0039] The power wheel 84 can move the bottom frame 85 on the track 10, and is used for conveying the mine truck compartment bottom plate 5; when the mine truck compartment bottom plate 5 needs to be lifted, the scissor frame 83 drives the upper frame 81 to rise or fall correspondingly.

[0040] The track 10 is also provided with four support conveying devices 9 on both sides for conveying the mine truck bed plate 5 of the lifting material track trolley 8 to the scissor lifting conveying table 7; the support conveying device 9 comprises a support column 96, which is connected with a turning support arm 93 through a rotating shaft; the upper end of the support column 96 is provided with a gear ring 95; the rear end of the turning support arm 93 is provided with a driving motor with a gear, which is engaged with the gear ring 95, and the turning support arm 93 rotates around the support column 96 under the driving of the motor; the upper end of the turning support arm 93 is provided with a second chain conveying assembly 91 for conveying the mine truck bed plate 5, and the one end of the turning support arm 93 is also provided with a second driving motor 92 for driving the second chain conveying assembly 91 to run; the second chain conveying assembly 91 and the first chain conveying assembly 78 are both composed of a chain wheel, a chain and a transmission shaft;

[0041] In use, the second driving motor 92 can drive the chain wheel to rotate, and the chain wheel drives the second chain conveying assembly 91 to run, and the second chain conveying assembly 91 realizes the conveying of the mine truck bed plate 5, and the turning assembly arranged at the same time is used for turning the direction of the turning support arm 93 during work, so as to avoid the mine truck bed plate 5 and prevent interference during the lifting of the mine truck bed plate 5.

[0042] The turning assembly comprises a gear ring 95, which is fixedly connected to the upper end of the support column 96; the rear end of the turning support arm 93 is provided with a driving motor with a gear, the gear on the driving motor is engaged with the gear ring (95), and the turning support arm 93 rotates around the support column 96 under the driving of the motor; the lower end of the support column 96 is fixedly connected with a fixed plate seat 98.

[0043] The working principle of the present application is that after the truck body floor 5 is spliced, it is transported to the support column 96 in front of the robot welding workstation 1 through the lifting material track trolley 8. The rod 93 at the upper end of the support column 96 rotates to avoid the lifting area of the truck body floor 5. The lifting truck body floor 5 is lifted by the lifting material track trolley 8 to be higher than the top plane of the steering support arm 93. The steering support arm 93 is rotated to be below the truck body floor 5. The lifting material track trolley 8 is lowered, so that the truck body floor 5 is placed on the second chain conveying assembly 91. At this time, the scissor lifting conveying table 7 embedded in the table of the robot welding workstation 1 is lifted, and the lifting height is the same as the height of the steering support arm 93. At this time, the second drive motor 92 on the steering support arm 93 and the first drive motor 79 on the conveying frame 77 are started at the same time, so that the truck body floor 5 is conveyed to the first chain conveying assembly 78. When the truck body floor 5 reaches the appropriate position, the first chain conveying assembly 78 stops rotating, and then the conveying frame 77 carrying the truck body floor 5 is lowered, and the truck body floor 5 is stably placed on the workbench of the robot welding workstation 1. The workbench of the robot welding workstation 1 is also provided with a reverse deformation tooling. When the welding robot 2 welds, it is reversely deformed and pressed to avoid welding deformation of the truck body floor 5. After the truck body floor 5 is welded, the reverse deformation is reset, the welding robot 2 is reset, and the scissor lifting conveying table 7 embedded in the table of the robot welding workstation 1 lifts the truck body floor 5. Through reverse operation of the system, the truck body floor 5 is automatically placed on the steering support arm 93, and is conveyed to the rear support rod for buffering through the lifting material track trolley 8. The process action and position control are all controlled by PLC.

[0044] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Although the present application is described in the form of an embodiment, not every embodiment contains only one technical solution. The description of the specification is for the sake of clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A large box bottom plate welding material conveying system, comprising a robot welding station (1) and a track (10), one side of the robot welding station (1) is provided with a base (4), and a welding assembly for welding a large box bottom plate is arranged on the base (4); characterized in that Both sides of the robot welding station (1) are provided with a scissor lifting conveying table (7) for lifting a mine truck compartment bottom plate (5); The track (10) is arranged at the position on the other side of the robot welding station (1), and the track (10) is provided with a lifting material track trolley (8) for conveying the mine truck compartment bottom plate (5); Both sides of the track (10) are also provided with four support conveying devices (9) for conveying the mine truck compartment bottom plate (5) to the scissor lifting conveying table (7); The support conveying device (9) comprises a support column (96), the support column (96) is connected with a steering arm (93) through a rotating shaft, a second chain conveying assembly (91) for conveying the mine truck compartment bottom plate (5) is arranged on the upper end of the steering arm (93), and a second driving motor (92) for driving the second chain conveying assembly (91) to operate is arranged on one end of the steering arm (93); The upper end of the support column (96) is provided with a gear ring (95), the rear end of the steering arm (93) is provided with a driving motor with a gear, the gear on the driving motor is engaged with the gear ring (95), and the steering arm (93) is driven to rotate around the support column (96).

2. The large case bottom plate welding material conveying system according to claim 1, characterized by, The welding assembly comprises a mounting base column (6), the mounting base column (6) is fixedly connected at the positions on both ends of the base (4), the upper end of the mounting base column (6) near one side of the robot welding station (1) is fixedly connected with a support arm (3), and the lower end surface of the support arm (3) is provided with a welding robot (2) for welding on both ends.

3. The large case bottom plate welding material conveying system according to claim 1, characterized by, The scissor lifting conveying table (7) comprises a support bottom plate (72), a conveying frame (77) is arranged above the support bottom plate (72), a lifting assembly is arranged between the support bottom plate (72) and the conveying frame (77), two first chain conveying assemblies (78) are arranged on the conveying frame (77), and a first driving motor (79) for driving the first chain conveying assemblies (78) to operate is arranged at one end of the conveying frame (77).

4. The large case bottom plate welding material conveying system according to claim 3, characterized by, The lifting assembly comprises scissor arms (74), the scissor arms (74) are arranged at positions between both ends of the conveying frame (77) and the support bottom plate (72), a synchronous connecting rod (71) is further arranged between the two scissor arms (74), top sliding rails (75) are fixedly connected at both ends of the conveying frame (77), bottom sliding rails (73) are arranged on one side near the middle of the support bottom plate (72), two end heads of one side of the scissor arm (74) are slidably connected with the top sliding rail (75) and the bottom sliding rail (73), and a hydraulic cylinder (76) for driving the scissor arm (74) to open and close is arranged in the middle of the support bottom plate (72).

5. The large case bottom plate welding material conveying system according to claim 1, wherein, The lifting material track trolley (8) comprises a bottom frame (85), an upper frame (81) is arranged above the bottom frame (85), a scissor frame (83) is arranged between the upper frame (81) and the bottom frame (85), and a roller assembly for cooperating with the track (10) is arranged at each corner of the bottom frame (85).

6. The large case bottom plate welding material conveying system according to claim 5, wherein, The roller assembly comprises a wheel frame (82) fixedly connected at each corner of the bottom frame (85), and a power wheel (84) for cooperating with the track (10) is arranged at the lower end surface of the wheel frame (82).

7. The large case bottom plate welding material conveying system according to claim 3, wherein, The second chain conveying assembly (91) and the first chain conveying assembly (78) each comprise a chain wheel, a chain and a transmission shaft.

8. The large case bottom plate welding material conveying system according to claim 1, wherein, The lower end of the supporting column (96) is fixedly connected with a fixed plate seat (98).

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