Precise welding device for light truck floor assembly and process method thereof

Abstract

The invention discloses a precise welding device for a light truck floor assembly and a technological method of the precise welding device, and belongs to the field of light truck floor assembly welding. The precise welding device comprises a first base platform, two sets of second base platforms are symmetrically installed on the left side of the first base platform front and back, and transverse connecting beams are fixedly installed at the opposite ends of the two sets of second base platforms; a feeding conveying assembly is fixedly installed on the upper side of the first base platform, a discharging conveying assembly is fixedly installed on the upper side of the transverse connecting beam, and the left end of the discharging conveying assembly is aligned to the left end of the feeding conveying assembly. Through cooperative use of the devices, the spot welding assembly can accurately weld different parts of the light truck floor assembly, the welding speed is high, the clamped light truck floor assembly can be placed on the two welding supporting platforms, the spot welding assembly can conveniently weld the multiple light truck floor assemblies at the same time, and the welding efficiency is improved. And the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of light truck floor assembly welding, and specifically to a precision welding device for light truck floor assemblies. Background Art

[0002] With the rapid development of the automotive manufacturing industry, light trucks, as important tools in the fields of logistics, transportation, etc., their production quality and efficiency have been increasingly emphasized. As an important part of light trucks, the welding link in the production process of light truck floor assemblies is particularly crucial. When traditional welding equipment welds light truck floor assemblies, since it is impossible to synchronously convey and weld multiple groups of light truck floor assemblies, it is necessary to complete the welding and blanking processes of one group of light truck floor assemblies one by one before starting the welding operation of the next group. This not only reduces production efficiency but also increases the complexity and time cost of manual operation.

[0003] Therefore, the present invention provides a precision welding device for light truck floor assemblies to solve the above problems. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] The present invention provides a precision welding device for light truck floor assemblies, aiming to solve the problems raised in the background art.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solutions: It includes a first base platform, two groups of second base platforms are symmetrically installed on the front and rear sides of the left side of the first base platform, a transverse connecting beam is fixedly installed at one end of the two groups of second base platforms facing each other, a feeding conveyor assembly is fixedly installed on the upper side of the first base platform, a discharging conveyor assembly is fixedly installed on the upper side of the transverse connecting beam, the left end of the discharging conveyor assembly is aligned with the left end of the feeding conveyor assembly, a clamping assembly for loading and unloading light truck floor assemblies is arranged on the upper sides of the right ends of the two groups of second base platforms, and spot welding assemblies for welding light truck floor assemblies are arranged on both of the two groups of second base platforms.

[0008] As a preferred technical solution of this application, the clamping assembly includes a first sliding guide rail, the front and rear ends of the first sliding guide rail are fixedly installed on the upper sides of the right ends of the two groups of second base platforms, a sliding frame body is slidably installed on the left side of the first sliding guide rail, a connecting mounting plate is fixedly installed on the lower side of the left end of the sliding frame body, multiple groups of first telescopic driving cylinders are fixedly installed on the front and rear sides of the lower end of the connecting mounting plate, fixed bases are symmetrically installed on the front and rear sides of the lower sides of the multiple groups of first telescopic driving cylinders at the front and rear ends of the connecting mounting plate, clamping arm bodies are fixedly installed on the left and right ends of the two groups of fixed bases, and clamping pressure blocks are arranged on both of the two groups of clamping arm bodies.

[0009] As a preferred technical solution of the present application, welding support platforms are fixedly installed on the upper sides of the two groups of the second base platforms. Positioning and limiting blocks are fixedly installed on the two welding support platforms. Second limiting guide rails are fixedly installed on the upper sides of the front and rear opposite ends of the two groups of the second base platforms. Limiting frames are slidably installed at the left and right ends of the two second limiting guide rails. Second telescopic driving cylinders are fixedly installed in the four groups of limiting frames. Clamping plates are slidably installed in the four groups of limiting frames. The four clamping plates are fixedly connected to the telescopic ends of the four second telescopic driving cylinders.

[0010] As a preferred technical solution of the present application, the four groups of limiting frames are respectively located on the left and right sides of the two welding support platforms, and the lower sides of the four groups of limiting frames are higher than the upper sides of the four welding support platforms.

[0011] As a preferred technical solution of the present application, the spot welding assembly includes a spot welding driving slide rail. The spot welding driving slide rail is fixedly installed on the upper side of the second base platform. A column base is slidably installed at the upper end of the spot welding driving slide rail. A third sliding guide rail is fixedly installed at the upper end of the column base. A limiting plate is slidably installed on the right side of the third sliding guide rail. A fourth telescopic driving cylinder is fixedly installed on the right side of the limiting plate. A spot welding head is arranged at the lower end of the fourth telescopic driving cylinder.

[0012] As a preferred technical solution of the present application, the two welding support platforms are located on the front and rear sides of the discharging conveyor assembly, and the two welding support platforms are arranged in parallel with the front and rear sides of the discharging conveyor assembly.

[0013] Among them, a process method of a precision welding device for a light truck floor assembly includes the following steps:

[0014] Step S1: Convey the light truck floor assembly to be welded to the clamping station through the feeding conveyor assembly;

[0015] Step S2: Start the first telescopic driving cylinder of the clamping assembly to drive the clamping pressure block to clamp the workpiece, and transfer the workpiece to the welding support platform along the first sliding guide rail through the sliding frame body;

[0016] Step S3: Synchronously adjust the positions of the four groups of limiting frames through the second limiting guide rails, and push the clamping plates by the second telescopic driving cylinders to complete the three-dimensional positioning of the workpiece;

[0017] Step S4: Control the spot welding driving slide rail and the third sliding guide rail to adjust the spatial coordinates of the spot welding head, and drive the spot welding head to perform multi-station synchronous welding through the fourth telescopic driving cylinder;

[0018] Step S5: Release the constraint of the clamping plate after welding is completed, and output the finished product through the discharging conveyor assembly;

[0019] Among them, there is a process parallelism between step S2 and step S4. When welding at the current station, the workpiece clamping is synchronously carried out at the subsequent station, forming a continuous production rhythm.

[0020] (III) Beneficial effects

[0021] Through the design of the clamping assembly, the stable clamping of the light truck floor assembly is realized, which is convenient for precise welding operations. The sliding installation of the clamping assembly and the setting of multiple clamping points make the clamping more firm. The design of the spot welding assembly makes the welding process more automated and efficient. Through the sliding installation and the design of the telescopic end, the spot welding assembly can achieve precise welding of different parts of the light truck floor assembly, with a fast welding speed. And the clamped light truck floor assembly can be placed on two sets of welding support platforms, which is convenient for the spot welding assembly to weld multiple sets of light truck floor assemblies simultaneously, greatly improving the production efficiency and reducing the complexity and time cost of manual operations. Description of the drawings

[0022] Figure 1 It is a front view structural schematic diagram of the present invention;

[0023] Figure 2 It is a rear view structural schematic diagram of the feeding conveyor assembly and the discharging conveyor assembly in the present invention;

[0024] Figure 3 It is a front view structural schematic diagram of the clamping assembly in the present invention;

[0025] Figure 4 It is a front view structural schematic diagram of the welding support platform in the present invention;

[0026] Figure 5 It is a front view structural schematic diagram of the spot welding assembly in the present invention.

[0027] In the figure:

[0028] 1. First base platform; 2. Second base platform; 3. Horizontal connecting beam; 4. Feeding conveyor assembly; 5. Discharging conveyor assembly; 6. First sliding guide rail; 7. Sliding frame body; 8. Connecting mounting plate; 9. First telescopic driving cylinder; 10. Fixed base; 11. Clamping arm body; 12. Clamping pressure block; 13. Welding support platform; 14. Positioning and limiting block; 15. Second limiting guide rail; 16. Limiting frame; 17. Second telescopic driving cylinder; 18. Clamping plate; 19. Spot welding driving slide rail; 20. Column base; 21. Third sliding guide rail; 22. Limiting plate; 23. Fourth telescopic driving cylinder; 24. Spot welding head. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] The present invention provides a precision welding device for a light truck floor assembly. As Figures 1-5 shown, the precision welding device for the light truck floor assembly includes a first base platform 1. Two groups of second base platforms 2 are symmetrically installed at the front and rear on the left side of the first base platform 1. A transverse connecting beam 3 is fixedly installed at one end of the two groups of second base platforms 2 facing each other. A feeding conveyor assembly 4 is fixedly installed on the upper side of the first base platform 1. A discharging conveyor assembly 5 is fixedly installed on the upper side of the transverse connecting beam 3. The left end of the discharging conveyor assembly 5 is aligned with the left end of the feeding conveyor assembly 4. A clamping assembly for loading and unloading the light truck floor assembly is arranged on the upper sides of the right ends of the two groups of second base platforms 2. Spot welding assemblies for welding the light truck floor assembly are arranged on both of the two groups of second base platforms 2.

[0031] During use, the light truck floor assembly to be welded is placed on the feeding conveyor assembly 4. The feeding conveyor assembly 4 and the discharging conveyor assembly 5 are used to convey the light truck floor assembly to be welded. Then, the clamping assembly is used to clamp and fix the light truck floor assembly. Then, the spot welding assembly is started, and the spot welding assembly performs welding operations on the light truck floor assembly. Through the combined use of the clamping assembly and the spot welding assembly, the automatic welding of the light truck floor assembly is realized, the welding efficiency is improved, and the welding quality is ensured at the same time.

[0032] The clamping assembly includes a first sliding guide rail 6. The front and rear ends of the first sliding guide rail 6 are fixedly installed on the upper sides of the right ends of the two groups of second base platforms 2. A sliding frame body 7 is slidably installed on the left side of the first sliding guide rail 6. A connecting mounting plate 8 is fixedly installed on the lower left side of the sliding frame body 7. A plurality of first telescopic driving cylinders 9 are fixedly installed at the lower ends of the front and rear sides of the connecting mounting plate 8. Fixed bases 10 are symmetrically installed at the front and rear of the lower sides of the plurality of first telescopic driving cylinders 9 at the front and rear ends of the connecting mounting plate 8. Clamping arm bodies 11 are fixedly installed at the left and right ends of the two groups of fixed bases 10. Clamping blocks 12 are arranged on both of the two groups of clamping arm bodies 11.

[0033] When using the clamping assembly, the sliding frame body 7 is slid to drive the connecting mounting plate 8 to move on the first sliding guide rail 6. The plurality of first telescopic driving cylinders 9 on the lower side of the connecting mounting plate 8 drive the two groups of fixed bases 10 and the four groups of clamping arm bodies 11 to move and fit with the light truck floor assembly to be welded, so that the four groups of clamping blocks 12 clamp and fix the light truck floor assembly, avoiding the situation of sliding of the fixed base 10 during the clamping process and improving the clamping stability.

[0034] On the upper sides of both groups of the second base platforms 2, welding support platforms 13 are fixedly installed. On both groups of welding support platforms 13, positioning and limiting blocks 14 are fixedly installed. On the upper sides of the front and rear opposite ends of both groups of the second base platforms 2, second limiting guide rails 15 are fixedly installed. At the left and right ends of both groups of second limiting guide rails 15, limiting frames 16 are slidably installed. In each of the four groups of limiting frames 16, a second telescopic driving cylinder 17 is fixedly installed. In each of the four groups of limiting frames 16, clamping plates 18 are slidably installed. The four groups of clamping plates 18 are fixedly connected to the telescopic ends of the four groups of second telescopic driving cylinders 17.

[0035] Place the clamped light truck floor assembly on the welding support platform 13. During use, the two groups of limiting frames 16 slide synchronously and approach on the second limiting guide rails 15. The second telescopic driving cylinders 17 in the two groups of limiting frames 16 drive the clamping plates 18 to slide within the limiting frames 16. The clamping plates 18 drive the two groups of welding support platforms 13 to move, thereby fixing the light truck floor assembly, facilitating the spot welding assembly to simultaneously weld multiple groups of light truck floor assemblies, and further improving the production efficiency.

[0036] The four groups of limiting frames 16 are respectively located on the left and right sides of the two groups of welding support platforms 13, and the lower sides of the four groups of limiting frames 16 are higher than the upper sides of the four groups of welding support platforms 13.

[0037] When the light truck floor assembly to be welded is placed on the welding support platform 13 through the clamping assembly, the limiting frames 16 on the left and right sides of the welding support platform 13 move to dock with the light truck floor assembly to be welded, thereby fixing the light truck floor assembly to be welded.

[0038] The spot welding assembly includes a spot welding driving slide rail 19. The spot welding driving slide rail 19 is fixedly installed on the upper side of the second base platform 2. The upper end of the spot welding driving slide rail 19 is slidably installed with a column base 20. The upper end of the column base 20 is fixedly installed with a third sliding guide rail 21. The right side of the third sliding guide rail 21 is slidably installed with a limiting plate 22. The right side of the limiting plate 22 is fixedly installed with a fourth telescopic driving cylinder 23. The lower end of the fourth telescopic driving cylinder 23 is provided with a spot welding head 24.

[0039] By sliding the column base 20 to drive the third sliding guide rail 21 to move on the spot welding driving slide rail 19, and the limiting plate 22 drives the fourth telescopic driving cylinder 23 and the spot welding head 24 to move on the third sliding guide rail 21. The spot welding head 24 at the lower end of the fourth telescopic driving cylinder 23 performs welding operations on the light truck floor assembly. Through the sliding installation of the column base 20, the third sliding guide rail 21, the limiting plate 22, and the fourth telescopic driving cylinder 23, the spot welding head 24 can accurately weld different parts of the light truck floor assembly, improving the welding accuracy.

[0040] Two groups of welding support platforms 13 are located on the front and rear sides of the discharge conveying assembly 5, and the two groups of welding support platforms 13 are arranged parallel to the front and rear sides of the discharge conveying assembly 5.

[0041] So that the light truck floor assembly to be welded can be conveyed by the discharge conveying assembly 5 and aligned with the two groups of welding support platforms 13, and then placed on the two groups of welding support platforms 13 through the clamping assembly, which is convenient for the cooperation of the spot welding assembly to carry out the welding operation. The overall design is reasonable and the operation is simple, greatly improving the production efficiency and quality of the light truck floor assembly.

[0042] A process method of a precision welding device for a light truck floor assembly includes the following steps:

[0043] Step S1: Convey the light truck floor assembly to be welded to the clamping station through the feeding conveying assembly 4;

[0044] Step S2: Start the first telescopic driving cylinder 9 of the clamping assembly to drive the clamping block 12 to clamp the workpiece, and transfer the workpiece to the welding support platform 13 along the first sliding guide rail 6 through the sliding frame body 7;

[0045] Step S3: Synchronously adjust the positions of the four groups of limiting frames 16 through the second limiting guide rail 15, and push the clamping plate 18 by the second telescopic driving cylinder 17 to complete the three-dimensional positioning of the workpiece;

[0046] Step S4: Control the spatial coordinates of the spot welding head 24 by controlling the spot welding driving slide rail 19 and the third sliding guide rail 21, and drive the spot welding head 24 to perform multi-station synchronous welding through the fourth telescopic driving cylinder 23;

[0047] Step S5: Release the constraint of the clamping plate 18 after welding is completed, and output the finished product through the discharge conveying assembly 5;

[0048] Among them, there is a process parallelism between Step S2 and Step S4. When welding at the current station, the workpiece clamping is synchronously carried out at the subsequent station to form a continuous production rhythm.

[0049] Working principle: When using the precision welding device for the light truck floor assembly, first place the light truck floor assembly to be welded on the feeding conveyor component 4. Through the coordinated action of the feeding conveyor component 4 and the discharging conveyor component 5, the light truck floor assembly is smoothly conveyed to the area parallel to the welding area. Drive the connecting mounting plate 8 to move along the first sliding guide rail 6 by sliding the sliding frame body 7 to the predetermined position of the light truck floor assembly. At this time, multiple fixed bases 10 descend under the action of multiple first telescopic driving cylinders 9 and closely fit the light truck floor assembly. At the same time, the clamping blocks 12 on the fixed bases 10 slide to clamp the light truck floor assembly. Then, reset and move the clamped light truck floor assembly to the upper side of the welding support platform 13 and release it. Two limit frames 16 slide on the second limit guide rail 15 and approach to fit with the light truck floor assembly. Then, the clamping plates 18 in the two limit frames 16 slide and clamp on the light truck floor assembly under the action of the second telescopic driving cylinder 17, thereby fixing the light truck floor assembly on the welding support platform 13. By moving the column base 20 on the spot welding driving slide rail 19 and adjusting the limit plate 22 on the third sliding guide rail 21, the fourth telescopic driving cylinder 23 and the spot welding head 24 installed on the limit plate 22 can be accurately positioned to the welding part of the light truck floor assembly. Under the command of the control system, the spot welding head 24 quickly and accurately completes the welding operation.

[0050] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. Precision welding device for light truck floor assembly, including a first base platform (1), characterized in that: On the left side of the first base platform (1), two groups of second base platforms (2) are symmetrically installed before and after. On the opposite ends of the two groups of second base platforms (2), a transverse connecting beam (3) is fixedly installed. On the upper side of the first base platform (1), a feeding conveyor assembly (4) is fixedly installed. On the upper side of the transverse connecting beam (3), a discharging conveyor assembly (5) is fixedly installed. The left end of the discharging conveyor assembly (5) is aligned with the left end of the feeding conveyor assembly (4). On the upper sides of the right ends of the two groups of second base platforms (2), a clamping assembly for loading and unloading the light truck floor assembly is provided. On each of the two groups of second base platforms (2), a spot welding assembly for welding the light truck floor assembly is provided.

2. The precision welding device for the light truck floor assembly according to claim 1, characterized in that: The clamping assembly includes a first sliding guide rail (6). The front and rear ends of the first sliding guide rail (6) are fixedly installed on the upper sides of the right ends of the two groups of second base platforms (2). A sliding frame body (7) is slidably installed on the left side of the first sliding guide rail (6). A connecting mounting plate (8) is fixedly installed on the lower side of the left end of the sliding frame body (7). On the front and rear sides of the lower end of the connecting mounting plate (8), a plurality of first telescopic driving cylinders (9) are fixedly installed. On the front and rear sides of the lower sides of the plurality of first telescopic driving cylinders (9) at the front and rear ends of the connecting mounting plate (8), fixed bases (10) are symmetrically installed before and after. On the left and right ends of the two fixed bases (10), clamping arm bodies (11) are fixedly installed. Clamping pressure blocks (12) are provided on each of the two clamping arm bodies (11).

3. The precision welding device for the light truck floor assembly according to claim 1, characterized in that: On the upper sides of the two groups of second base platforms (2), welding support platforms (13) are fixedly installed. On each of the two welding support platforms (13), positioning and limiting blocks (14) are fixedly installed. On the upper sides of the front and rear opposite ends of the two groups of second base platforms (2), second limiting guide rails (15) are fixedly installed. On the left and right ends of the two second limiting guide rails (15), limiting frames (16) are slidably installed. In each of the four limiting frames (16), a second telescopic driving cylinder (17) is fixedly installed. In each of the four limiting frames (16), a clamping plate (18) is slidably installed. The four clamping plates (18) are fixedly connected to the telescopic ends of the four second telescopic driving cylinders (17).

4. The precision welding device for the light truck floor assembly according to claim 3, wherein: The four limiting frames (16) are respectively located on the left and right sides of the two welding support platforms (13). The lower sides of the four limiting frames (16) are higher than the upper sides of the two welding support platforms (13).

5. The precision welding device for the light truck floor assembly according to claim 1, characterized in that: The spot welding assembly includes a spot welding driving slide rail (19). The spot welding driving slide rail (19) is fixedly installed on the upper side of the second base platform (2). A column base (20) is slidably installed at the upper end of the spot welding driving slide rail (19). A third sliding guide rail (21) is fixedly installed at the upper end of the column base (20). A limiting plate (22) is slidably installed on the right side of the third sliding guide rail (21). A fourth telescopic driving cylinder (23) is fixedly installed on the right side of the limiting plate (22). A spot welding head (24) is provided at the lower end of the fourth telescopic driving cylinder (23).

6. The precision welding device for the light truck floor assembly according to claim 3, wherein: Two groups of the welding support platforms (13) are located on the front and rear sides of the discharging conveyor assembly (5), and the two groups of the welding support platforms (13) are arranged parallel to the front and rear sides of the discharging conveyor assembly (5).

7. A process method of a precision welding device for a light truck floor assembly, applied to the precision welding device for a light truck floor assembly described in claim 6, characterized in that, It includes the following steps: Step S1: Convey the light truck floor assembly to be welded to the clamping station through the feeding conveyor assembly (4); Step S2: Start the first telescopic driving cylinder (9) of the clamping assembly to drive the clamping block (12) to clamp the workpiece, and transfer the workpiece to the welding support platform (13) along the first sliding guide rail (6) through the sliding frame body (7); Step S3: Synchronously adjust the positions of the four groups of limit frames (16) through the second limit guide rail (15), and push the clamping plate (18) by the second telescopic driving cylinder (17) to complete the three-dimensional positioning of the workpiece; Step S4: Control the spot welding driving slide rail (19) and the third sliding guide rail (21) to adjust the spatial coordinates of the spot welding head (24), and drive the spot welding head (24) through the fourth telescopic driving cylinder (23) to perform multi-station synchronous welding; Step S5: Release the constraint of the clamping plate (18) after welding is completed, and output the finished product through the discharging conveyor assembly (5); Among them, there is process parallelism between Step S2 and Step S4. When welding at the current station, the workpiece clamping is synchronously carried out at the subsequent station to form a continuous production rhythm.

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