Split type chair frame welding tool

Abstract

The utility model discloses a split type chair frame welding tool, including welding station, the middle part of welding station erects mounting panel, and the middle part of mounting panel is provided with two groups rotatable pressboard, and the both sides of pressboard are provided with first positioning assembly and second positioning assembly, and first positioning assembly includes first locating rack and second locating rack, and first locating rack is used to support front foot frame, and second locating rack is used to support front foot welding iron sheet, and second positioning assembly includes third locating rack and fourth locating rack, and third locating rack is used to support rear foot frame, and fourth locating rack is used to support rear foot welding iron sheet, and still be provided with third positioning assembly and fourth positioning assembly on the welding station, and are used to cooperate respectively the reverse side of front foot welding iron sheet and the reverse side of rear foot welding iron sheet. The welding tool of the utility model can carry out the front welding and the reverse welding of different groups of chair frames simultaneously, and can realize multi-angle welding by cooperating with machine welding tool mechanical arm, does not need manual direction adjustment, is more efficient, and the welding points are uniform.

Description

Technical Field

[0001] This utility model belongs to the field of chair frame welding technology, specifically relating to a split chair frame welding fixture. Background Technology

[0002] Currently, Chinese furniture companies are facing challenges such as rising labor costs, resource and environmental pressures, increasingly fierce market competition, increasingly personalized product demands, and rapidly evolving technological innovations.

[0003] An existing tooling for welding the four legs of a chair frame uses manual welding. The drawbacks of using this tooling for chair frames are: 1) Manual welding requires a certain level of skill from the operator; 2) Manual welding is time-consuming and has low output; 3) Manually welded seams are not as uniform and smooth as machine-welded seams; 4) Uneven welding speed during manual welding leads to inconsistent heat shrinkage and dimensional deviations. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a modular chair frame welding fixture, transforming the welding process from manual to machine-based. By setting up front and back welding positions on the same welding table to simultaneously weld the front and back of the seat support sheet, the entire chair frame can be welded in one operation, saving time spent on secondary welding. To achieve the above objectives, this utility model can be implemented through the following specific technical solutions: A modular chair frame welding fixture includes a welding table with a mounting plate in the center. Two rotatable pressure plates are positioned in the center of the mounting plate. A first positioning component and a second positioning component are positioned on either side of the pressure plates. The first positioning component includes a first positioning frame and a second positioning frame. The first positioning frame supports the front leg frame, and the second positioning frame supports the front leg welding plate, cooperating with the welding of the front leg welding plate's front surface. The second positioning component includes a third positioning frame and a fourth positioning frame. The third positioning frame supports the rear leg frame, and the fourth positioning frame supports the rear leg welding plate, cooperating with the welding of the rear leg welding plate's front surface. The welding platform is also provided with a third positioning component and a fourth positioning component. The third positioning component and the fourth positioning component are respectively placed on both sides of the mounting plate, corresponding to the first positioning component and the second positioning component. The third positioning component is used to fix the front foot frame and the front foot welding iron plate, and cooperates in welding the reverse side of the front foot welding iron plate. The fourth positioning component is used to fix the rear foot frame and the rear foot welding iron plate, and cooperates in welding the reverse side of the rear foot welding iron plate.

[0005] Furthermore, the third positioning component is for the front foot welded iron sheet that has been welded to the front foot frame. The third positioning component includes a first placement platform and a first pressing member. The first placement platform is used to place the front foot frame, and the first pressing member is used to press the front foot welded iron sheet.

[0006] Furthermore, the fourth positioning component is for the rear foot welding iron sheet that has been welded to the front of the rear foot frame. The fourth positioning component includes a second placement platform and a second pressing member. The second placement platform is used to place the rear foot frame, and the second pressing member is used to press the rear foot welding iron sheet.

[0007] Furthermore, the pressure plate is mounted on the mounting plate via a fixing post, and the pressure plate is rotatably connected to the fixing post. Both ends of the pressure plate simultaneously press the corresponding front foot welded iron sheet and rear foot welded iron sheet located on the same side.

[0008] Furthermore, the mounting plate is mounted on the welding platform via fixing brackets on both sides of its bottom, and a clamping member is provided in the middle of the fixing bracket to clamp the middle of the crossbar of the front or rear foot frame.

[0009] Furthermore, the welding platform is provided with a front foot mounting seat and a rear foot mounting seat, which are movably inserted into the bottom of the vertical rods of the front foot frame and the rear foot frame, respectively.

[0010] Compared with the prior art, the present invention has the following advantages: (1) The welding fixture of this utility model can simultaneously perform front and back welding of different chair frames. With the help of the robotic arm of the machine welding fixture, multi-angle welding can be achieved without manual direction adjustment, which is more efficient and produces uniform welds. The front welding points of the front and rear welding iron plates of the chair frame are welded by the first and second positioning components, and the back welding points of the front and rear welding iron plates are welded by the third and fourth positioning components. Compared with manual welding, machine welding has lower requirements for operators and does not require professional personnel to perform the work. The grinding of the welded product is more time-saving than that of manual welding. By improving the welding process, the output is greatly increased, energy is saved and emissions are reduced, and production costs are lowered.

[0011] (2) The welding fixture of this application can be used with two molds at the same time. When welding the front welding point of the product (i.e., the front foot welding iron sheet and the rear foot welding iron sheet) in one mold (i.e., a set of front foot frame and rear foot frame), the other mold can be used to weld the back welding point of the accessory, so as to achieve seamless connection of accessory entry and welding. Attached Figure Description

[0012] Figure 1 This is one of the structural schematic diagrams of a utility model welding fixture; Figure 2This is the second structural schematic diagram of a utility model welding fixture; Figure 3 This is the third structural schematic diagram of a utility model welding fixture; Figure 4 This refers to the welding fixture in the prior art that relates to this utility model.

[0013] In the diagram: 1-Welding table, 2-Mounting plate, 21-Fixing column, 3-Pressure plate, 4-First positioning component, 41-First positioning frame, 42-Second positioning frame, 5-Second positioning component, 51-Third positioning frame, 52-Fourth positioning frame, 6-Third positioning component, 61-First placement platform, 62-First pressing component, 7-Fourth positioning component, 71-Second placement platform, 72-Second pressing component, 8-Front foot welding plate, 9-Rear foot welding plate, 10-Front foot frame, 11-Rear foot frame, 12-Clamping component, 13-Fixing frame, 14-Front foot mounting base, 15-Rear foot mounting base. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0015] like Figures 1-3 As shown, a split-type chair frame welding fixture is used for welding the front and back sides of the chair frame and the welding iron sheet. It includes a welding table 1, a mounting plate 2 in the middle of the welding table 1, two sets of rotatable pressure plates 3 in the middle of the mounting plate 2, and a first positioning component 4 and a second positioning component 5 on both sides of the pressure plate. The first positioning component 4 includes a first positioning frame 41 and a second positioning frame 42. The first positioning frame 41 is used to support the front leg frame 10, and the second positioning frame 42 is used to support the front leg welding iron sheet 8 and cooperate in welding the front side of the front leg welding iron sheet 8. The second positioning component 5 includes a third positioning frame 51 and a fourth positioning frame 52. The third positioning frame 51 is used to support the rear leg frame 11, and the fourth positioning frame 52 is used to support the rear leg welding iron sheet 9 and cooperate in welding the front side of the rear leg welding iron sheet 9. The welding table 1 is also equipped with a third positioning component 6 and a fourth positioning component 7, which are respectively placed on both sides of the mounting plate 2, corresponding to the first positioning component 4 and the second positioning component 5. The third positioning component 6 is used to fix the front foot frame 10 and the front foot welding iron plate 8, and cooperates in welding the reverse side of the front foot welding iron plate 8. The fourth positioning component 7 is used to fix the rear foot frame 11 and the rear foot welding iron plate 9, and cooperates in welding the reverse side of the rear foot welding iron plate 9. The pressure plate 3 is set on the mounting plate 2 through the fixing post 21. The pressure plate 3 and the fixing post 21 are rotatably connected. The two ends of the pressure plate 3 simultaneously press the corresponding front foot welding iron plate 8 and rear foot welding iron plate 9 placed on the same side.

[0016] In this embodiment, the third positioning component 6 targets the front foot welded iron sheet 8 already welded to the front of the front foot frame 10. The third positioning component 6 includes a first placement platform 61 and a first pressing member 62. The first placement platform 61 is used to place the front foot frame 10, and the first pressing member 62 is used to movably press the front foot welded iron sheet 8. The fourth positioning component 7 targets the rear foot welded iron sheet 9 already welded to the front of the rear foot frame 11. The fourth positioning component 7 includes a second placement platform 71 and a second pressing member 72. The second placement platform 71 is used to place the rear foot frame 11, and the second pressing member 72 is used to movably press the rear foot welded iron sheet 9.

[0017] Mounting plate 2 is mounted on welding table 1 via fixing brackets 13 on both sides of its bottom. A clamping member 12 is provided in the middle of the fixing bracket 13 to clamp the middle of the crossbar of the front foot frame 10 or the rear foot frame 11. Front foot mounting seat 14 and rear foot mounting seat 15 are provided on welding table 1, which are movably inserted and engaged with the bottom of the vertical bar of the front foot frame 10 and the rear foot frame 11, respectively.

[0018] In a specific embodiment, the clamping component 12 is a clamping cylinder, and the operation of the two clamping cylinders is synchronously controlled by a cylinder switching valve set on the welding table 1.

[0019] The specific operating procedure is as follows: ① Placement of front foot frame 10 and front foot welding iron plate 8 for front welding: First, insert the vertical rods on both sides of the front foot frame 10 into the front foot mounting base 14; then, place the horizontal bar of the front foot frame 10 on the first positioning frame 41 and clamp the horizontal bar with the clamping cylinder; finally, place the front foot welding iron plate 8 on the second positioning frame 42 and abut the front foot welding iron plate 8 with the horizontal bar of the front foot frame 10; and perform welding in conjunction with the welding robot.

[0020] ② Placement of the rear foot frame 11 and the rear foot welding iron plate 9 for front welding: First, insert the vertical bars on both sides of the rear foot frame 11 into the front foot mounting base 14; then, place the horizontal bar of the rear foot frame 11 on the three positioning frame 51 and clamp the horizontal bar with the clamping cylinder; finally, place the rear foot welding iron plate 9 on the fourth positioning frame 52 and abut the rear foot welding iron plate 9 with the horizontal bar of the rear foot frame 11; and perform welding in conjunction with the welding robot.

[0021] ③ Placement of front foot frame 10 and front foot welding iron plate 8 on the reverse side of group B: Place the crossbar of front foot frame 10 on the first placement platform 61, and at the same time, place the front foot welding iron plate 8 with the welded front side under the first pressing part 62, and cooperate with the welding robot to perform welding.

[0022] ④ Placement of the back foot frame 11 and the back foot welding iron plate 9 of Group B for reverse welding: Place the crossbar of the back foot frame 11 on the second placement platform 71, and at the same time, place the back foot welding iron plate 9 with the welded front side under the second pressing part 72, and cooperate with the welding robot to perform welding.

[0023] In this application, the first pressing component 62 and the second pressing component 72 are movable pressing components in the prior art.

[0024] like Figure 4 As shown, the existing manual welding fixture involves manual welding on one side, followed by demolding and welding the other side. This manual welding process cannot guarantee consistent welding speed, leads to uncontrollable heat distribution on the product, and results in inconsistent welding deformation. Compared to existing manual welding techniques, the welding fixture of this application requires less skilled operators and does not require specialized personnel. By improving the welding process, output is significantly increased, energy is saved, emissions are reduced, and production costs are lowered. Furthermore, the welding fixture of this application can be used with two molds simultaneously. While welding the front welding points of the front and rear legs of one set of chair frames using the first positioning component 4 and the second positioning component 5, simultaneously welding the reverse welding points of the front and rear legs of the other set of chair frames using the third positioning component 6 and the fourth positioning component 7.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A modular chair frame welding fixture, comprising a welding table (1), characterized in that, The welding table (1) is supported by a mounting plate (2) in the middle. Two sets of rotatable pressure plates (3) are set in the middle of the mounting plate (2). A first positioning component (4) and a second positioning component (5) are set on both sides of the pressure plate. The first positioning component (4) includes a first positioning frame (41) and a second positioning frame (42). The first positioning frame (41) is used to support the front foot frame (10), and the second positioning frame (42) is used to support the front foot welding iron plate (8) and cooperate in welding the front of the front foot welding iron plate (8). The second positioning component (5) includes a third positioning frame (51) and a fourth positioning frame (52). The third positioning frame (51) is used to support the rear foot frame (11), and the fourth positioning frame (52) is used to support the rear foot welding iron plate (9) and cooperate in welding the front of the rear foot welding iron plate (9). The welding table (1) is also provided with a third positioning component (6) and a fourth positioning component (7). The third positioning component (6) and the fourth positioning component (7) are respectively placed on both sides of the mounting plate (2) and correspond to the first positioning component (4) and the second positioning component (5). The third positioning component (6) is used to fix the front foot frame (10) and the front foot welding iron plate (8) and to cooperate in welding the reverse side of the front foot welding iron plate (8). The fourth positioning component (7) is used to fix the rear foot frame (11) and the rear foot welding iron plate (9) and to cooperate in welding the reverse side of the rear foot welding iron plate (9).

2. The modular chair frame welding fixture according to claim 1, characterized in that, The third positioning component (6) is for the front foot welded iron sheet (8) that has been welded on the front side of the front foot frame (10). The third positioning component (6) includes a first placement platform (61) and a first pressing member (62). The first placement platform (61) is used to place the front foot frame (10), and the first pressing member (62) is used to press the front foot welded iron sheet (8) movably.

3. The modular chair frame welding fixture according to claim 1, characterized in that, The fourth positioning component (7) is for the rear foot welding iron piece (9) that has been welded to the front of the rear foot frame (11). The fourth positioning component (7) includes a second placement platform (71) and a second pressing component (72). The second placement platform (71) is used to place the rear foot frame (11), and the second pressing component (72) is used to press the rear foot welding iron piece (9) movably.

4. The modular chair frame welding fixture according to claim 1, characterized in that, The pressure plate (3) is mounted on the mounting plate (2) via a fixing post (21). The pressure plate (3) is rotatably connected to the fixing post (21). The two ends of the pressure plate (3) simultaneously press the corresponding front foot welding iron plate (8) and rear foot welding iron plate (9) located on the same side.

5. A split-type chair frame welding fixture according to any one of claims 1-4, characterized in that, The mounting plate (2) is mounted on the welding table (1) by fixing brackets (13) provided on both sides of its bottom. A clamping member (12) is provided in the middle of the fixing bracket (13) to clamp the middle of the crossbar of the front foot frame (10) or the rear foot frame (11).

6. The modular chair frame welding fixture according to claim 5, characterized in that, The welding table (1) is provided with a front foot mounting seat (14) and a rear foot mounting seat (15), which are movably inserted into the bottom of the vertical rods of the front foot frame (10) and the rear foot frame (11), respectively.

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