Hood front face welding device

Abstract

The utility model discloses a hood front face welding device, and relates to the technical field of welding equipment. A front face adjusting station and a spot welding station are arranged on the rack; the front face adjusting station comprises a front face fixing mechanism, a front face rotating mechanism and a front face lifting mechanism; the front face fixing mechanism is used for fixing the front face of the hood, the front face rotating mechanism is matched with the front face fixing mechanism, and the front face lifting mechanism is matched with the front face rotating mechanism; the spot welding station comprises a spot welding machine, a spot welding swing mechanism and a spot welding translation mechanism; the spot welding machine is installed on the spot welding rotation mechanism, the spot welding rotation mechanism is used for driving the spot welding machine to rotate around the Z axis in a reciprocating mode, and the spot welding translation mechanism is matched with the spot welding rotation mechanism. According to the automatic spot welding device, automatic spot welding can be conducted on the hood front face, and the consistency and stability of the hood front face welding spot distance and the spot welding state are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding equipment technical field especially relates to a machine cover front face welding set. BACKGROUND

[0002] The tractor machine cover front face bears the important responsibility of assembling the front headlamp in the overall structure of the tractor, and at the same time, in order to meet the air inlet requirement of the engine cooling fan and ensure the appearance of the whole vehicle, the structural design is unique. The structure is composed of three arc-shaped mesh hole plates, which are positioned and spliced by spot welding process in pressure welding process, and finally spot welded into shape. This process has extremely strict requirements on spot welding size and appearance quality.

[0003] However, the current operation mode relies heavily on manual operation. Specifically, one person holds the spot welding equipment, and the other person holds the machine cover front face, and the two people work together to complete the welding task. However, in the actual operation process, due to human factors, the position and distance of the welding points often deviate to varying degrees, and the spot deviation phenomenon occurs frequently, which further causes quality defects. These problems not only bring many inconveniences to the installation of the tractor headlamp, but also have a negative impact on the overall appearance quality of the tractor, making it difficult to effectively guarantee the product quality. In addition, the manual operation mode also leads to great differences in the consistency of the spot welded products, and currently only post-adjustment can be used to try to make up for these defects, which undoubtedly increases the production cost and time cost, and reduces the production efficiency. SUMMARY

[0004] Therefore, the technical problem to be solved by the utility model is to provide a machine cover front face welding set that can automatically spot weld the machine cover front face, solve the problem of welding point distance difference caused by manual spot welding and the problem of welding defects caused by manual spot welding deviation, and ensure the consistency and stability of the machine cover front face welding point distance and spot welding state.

[0005] To solve the above technical problems, the technical scheme of the utility model is:

[0006] A machine cover front face welding set, comprising a rack, wherein the rack is provided with a front face adjusting station and a spot welding station matched therewith; the spot welding station is arranged on one side of the front face adjusting station along the Y direction;

[0007] The front face adjusting station comprises a front face fixing mechanism, a front face rotating mechanism and a front face lifting mechanism; the front face fixing mechanism is used for fixing the machine cover front face and making its welding position face the spot welding station, the front face rotating mechanism is matched with the front face fixing mechanism and is used for driving it to rotate reciprocatingly around the X axis, and the front face lifting mechanism is matched with the front face rotating mechanism and is used for driving it to move reciprocatingly along the Z direction;

[0008] The spot welding station comprises a spot welding machine, a spot welding rotating mechanism and a spot welding translation mechanism; the spot welding machine is installed on the spot welding rotating mechanism and its welding gun is arranged towards the front face fixing mechanism, the spot welding rotating mechanism is used to drive the spot welding machine to reciprocally rotate around the Z axis, and the spot welding translation mechanism is adapted to the spot welding rotating mechanism and is used to drive the spot welding machine to reciprocally move along the Y direction.

[0009] Preferably, the front face fixing mechanism comprises a tooling platform, and two front face clamping cylinders are installed on the tooling platform.

[0010] Preferably, at least one front face positioning pin and two symbol-shaped positioning assemblies are installed on the tooling platform, and the two symbol-shaped positioning assemblies are separately arranged on the two sides of the front face positioning pin along the X direction.

[0011] Preferably, the front face rotating mechanism comprises two rotating bearing seats, and the two rotating bearing seats are oppositely arranged along the X direction.

[0012] The power shaft of the front face rotating motor passes through one of the rotating bearing seats and is connected with the tooling platform.

[0013] Preferably, the front face lifting mechanism comprises two lifting assemblies, and the lifting assemblies are adapted to the rotating bearing seats.

[0014] The lifting assembly comprises a lifting plate, the lifting plate is fixedly connected with the rotating bearing seat, a Z-direction sliding block sliding rail assembly is installed between the lifting plate and the rack, a lifting motor is installed on the rack, and the power shaft of the lifting motor is connected with the lifting plate through a Z-direction gear and rack assembly.

[0015] Preferably, a transmission shaft is connected between the two Z-direction gear and rack assemblies installed on the two lifting plates, and the power shaft of the lifting motor is connected with the transmission shaft.

[0016] Preferably, a position sensor one is installed on the tooling platform, and the position sensor one is installed at the center of the tooling platform.

[0017] A position sensor two is installed on the rack, and the position sensor two is used to detect the Z-direction position of the front face of the machine cover.

[0018] Preferably, the spot welding rotating mechanism comprises a spot welding column, the spot welding column is rotatably installed on a spot welding sliding plate around the Z axis, and the top end of the spot welding column is installed with the spot welding machine.

[0019] A spot welding rotating linear motor is installed on the spot welding sliding plate, and the spot welding rotating linear motor is connected with the spot welding column through a Y-direction gear and rack assembly.

[0020] Preferably, the spot welding translation mechanism comprises a spot welding translation linear motor mounted on the rack, and a power shaft of the spot welding translation linear motor is connected with the spot welding slide plate.

[0021] Two Y-direction slider slide rail assemblies are mounted between the spot welding slide plate and the rack.

[0022] Preferably, two position sensor threes are mounted on the rack and oppositely arranged, and the two position sensor threes are separately arranged on two sides of the spot welding slide plate along the Y direction.

[0023] After the above technical scheme is adopted, the spot welding device has the following advantages:

[0024] The hood front face welding device comprises a rack, a front face adjusting station and a spot welding station matched with the front face adjusting station are arranged on the rack, the spot welding station is arranged on one side of the front face adjusting station along the Y direction, the front face adjusting station comprises a front face fixing mechanism, a front face rotating mechanism and a front face lifting mechanism, the front face fixing mechanism is used for fixing the hood front face and making the welding position of the hood front face face the spot welding station, the front face rotating mechanism is matched with the front face fixing mechanism and is used for driving the front face fixing mechanism to rotate around the X axis reciprocatingly, and the front face lifting mechanism is matched with the front face rotating mechanism and is used for driving the front face rotating mechanism to move along the Z direction reciprocatingly.

[0025] The spot welding station comprises a spot welding machine, a spot welding rotating mechanism and a spot welding translation mechanism, the spot welding machine is mounted on the spot welding rotating mechanism and the welding gun of the spot welding machine faces the front face fixing mechanism, the spot welding rotating mechanism is used for driving the spot welding machine to rotate around the Z axis reciprocatingly, and the spot welding translation mechanism is matched with the spot welding rotating mechanism and is used for driving the spot welding rotating mechanism to move along the Y direction reciprocatingly. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below in combination with the drawings and embodiments.

[0027] Figure 1 is a structural schematic view of the hood front face welding device of the present application;

[0028] Figure 2 isFigure 1 side view of the front face adjusting station;

[0029] Figure 3 is Figure 2 A-A sectional view of the front face adjusting station;

[0030] Figure 4 is Figure 1 structure schematic view of another direction;

[0031] in the figure:

[0032] 1, rack; 11, front face adjusting station; 12, spot welding station;

[0033] 2, front face fixing mechanism; 21, tooling platform; 22, front face clamping cylinder; 23, front face positioning pin; 24, symbol-shaped positioning assembly; 25, position sensor one;

[0034] 3, front face rotating mechanism; 31, rotating bearing seat; 32, front face rotating motor;

[0035] 4, front face lifting mechanism; 41, lifting plate; 42, Z-direction sliding block sliding rail assembly; 43, lifting motor; 44, Z-direction gear and rack assembly; 45, transmission shaft; 46, position sensor two;

[0036] 5, spot welding machine;

[0037] 6, spot welding rotating mechanism; 61, spot welding stand; 62, spot welding sliding plate; 63, spot welding rotating linear motor; 64, Y-direction gear and rack assembly;

[0038] 7, spot welding translation mechanism; 71, spot welding translation linear motor; 72, Y-direction sliding block sliding rail assembly; 73, position sensor three. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model more clearly and clearly, the following will be further detailed by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0040] As Figures 1 to 4 Commonly shown, the utility model includes rack 1;Rack 1 is provided with front face adjusting station 11 and the spot welding station 12 that is compatible therewith on one side;Spot welding station 12 is along Y and is arranged in the side of front face adjusting station 11.

[0041] The front face adjusting station 11 comprises a front face fixing mechanism 2, a front face rotating mechanism 3 and a front face lifting mechanism 4; the front face fixing mechanism 2 is used for fixing the front face of the bonnet and making the welding position thereof face the spot welding station 12, the front face rotating mechanism 3 is matched with the front face fixing mechanism 2 and is used for driving the front face fixing mechanism 2 to rotate reciprocatingly around the X axis, and the front face lifting mechanism 4 is matched with the front face rotating mechanism 3 and is used for driving the front face rotating mechanism 3 to move reciprocatingly along the Z direction. The front face fixing mechanism 2, the front face rotating mechanism 3 and the front face lifting mechanism 4 are matched with each other and can fix the front face of the bonnet, rotate the front face of the bonnet around the X axis and lift the front face of the bonnet, so as to adjust the position of the welding position thereof, meet the cooperation with the spot welding station 12, replace the traditional manual adjustment mode, reduce the labor intensity, ensure the consistency of the adjustment and improve the quality of the finished product.

[0042] The spot welding station 12 comprises a spot welding machine 5, a spot welding rotating mechanism 6 and a spot welding translation mechanism 7; the spot welding machine 5 is installed on the spot welding rotating mechanism 6 and the welding gun thereof is arranged to face the front face fixing mechanism 2, the spot welding rotating mechanism 6 is used for driving the spot welding machine 5 to rotate reciprocatingly around the Z axis, and the spot welding translation mechanism 7 is matched with the spot welding rotating mechanism 6 and is used for driving the spot welding rotating mechanism 6 to move reciprocatingly along the Y direction. The spot welding machine 5, the spot welding rotating mechanism 6 and the spot welding translation mechanism 7 are matched with each other and can drive the spot welding machine 5 to approach the front face adjusting station 11 and rotate around the Z axis, so as to complete the spot welding action of the front face of the bonnet from one side to the other side, replace the traditional manual spot welding mode of the spot welding machine 5, ensure the uniformity of the welding position and the interval size, improve the welding quality and the welding efficiency, reduce the labor intensity and the labor cost.

[0043] In the application, the front face fixing mechanism 2 comprises a tooling platform 21, and two front face clamping cylinders 22 are installed on the tooling platform 21. Preferably, the front face clamping cylinder 22 is a rotary clamping cylinder, which first performs a rotary action to avoid the front face of the bonnet before clamping and fixing the front face of the bonnet on the tooling platform 21 through the flange on the front face of the bonnet, and then clamps and fixes the front face of the bonnet; when it is necessary to release the front face of the bonnet, the reverse action is performed.

[0044] At least one front face positioning pin 23 and two symbol-shaped positioning assemblies 24 are installed on the tooling platform 21, and the two symbol-shaped positioning assemblies 24 are arranged on the two sides of the front face positioning pin 23 along the X direction. Preferably, the number of the front face positioning pins 23 is two, and the two front face positioning pins 23 are arranged symmetrically along the center of the tooling platform 21, and the two symbol-shaped positioning assemblies 24 are also arranged symmetrically along the center of the tooling platform 21; the symbol-shaped positioning assembly 24 comprises two symbol-shaped blocks arranged along the Z direction, and a symbol-shaped surface for abutting against the front face of the bonnet is arranged on the symbol-shaped block, and the combination design of the symbol-shaped positioning assembly 24 and the front face positioning pin 23 ensures the consistency of the position of the front face of the bonnet after being clamped.

[0045] The front face rotating mechanism 3 comprises two rotating bearing seats 31 oppositely arranged along the X direction, and the power shaft of a front face rotating motor 32 is connected with the tooling platform 21 through one of the rotating bearing seats 31. Preferably, two connecting plates are installed on the tooling platform 21, one connecting plate is connected with the power shaft of the front face rotating motor 32, and the other connecting plate is connected with the other rotating bearing seat 31 through a driven shaft.

[0046] The front face lifting mechanism 4 comprises two lifting assemblies adapted to the rotating bearing seats 31. Each lifting assembly comprises a lifting plate 41 fixedly connected with the rotating bearing seat 31, and a Z direction sliding block sliding rail assembly 42 is installed between the lifting plate 41 and the rack 1. A lifting motor 43 is installed on the rack 1, and the power shaft of the lifting motor 43 is connected with the lifting plate 41 through a Z direction gear and rack assembly 44. The power shaft of the lifting motor 43 is provided with a gear of the Z direction gear and rack assembly 44, and a rack of the Z direction gear and rack assembly 44 is installed on the lifting plate 41 along the Z direction. The lifting motor 43 drives the rack of the Z direction gear and rack assembly 44 to reciprocate along the Z direction, thereby driving the lifting plate 41 to reciprocate along the Z direction.

[0047] The power shaft of the lifting motor 43 is connected with a transmission shaft 45 between the two Z direction gear and rack assemblies 44 installed on the two lifting plates 41. The power shaft of the lifting motor 43 drives the transmission shaft 45 to rotate, thereby driving the two lifting plates 41 to move simultaneously and in the same direction, so as to ensure the synchronization of the two lifting plates 41 during lifting and improve the lifting stability.

[0048] A position sensor one 25 is installed on the tooling platform 21 and at the center of the tooling platform 21. The position sensor one 25 is used for detecting the placement position of the front face of the machine cover. A position sensor two 46 is installed on the rack 1 and used for detecting the Z direction position of the front face of the machine cover. The position sensor one 25 and the position sensor two 46 are respectively connected with an external electric control box.

[0049] The spot welding rotating mechanism 6 comprises a spot welding column 61 rotatably installed on a spot welding sliding plate 62 along the Z axis, and a spot welding machine 5 is installed at the top end of the spot welding column 61. A spot welding rotating linear motor 63 is installed on the spot welding sliding plate 62 and connected with the spot welding column 61 through a Y direction gear and rack assembly 64. The power shaft of the spot welding rotating linear motor 63 is connected with the rack of the Y direction gear and rack assembly 64, thereby driving the rack of the Y direction gear and rack assembly 64 to reciprocate along the Y direction, so as to drive the gear of the Y direction gear and rack assembly 64 to rotate around the Z axis, thereby driving the spot welding column 61 and the spot welding machine 5 installed at the top end of the spot welding column 61 to rotate around the Z axis.

[0050] The spot welding translation mechanism 7 comprises a spot welding translation linear motor 71 mounted on the rack 1, a power shaft of the spot welding translation linear motor 71 being connected with the spot welding slide plate 62; two Y-direction slide block slide rail assemblies 72 are mounted between the spot welding slide plate 62 and the rack 1. The spot welding translation linear motor 71 is fixed on the rack 1 along the Y direction, and is used to drive the spot welding slide plate 62 to move reciprocally along the Y direction.

[0051] Two position sensors three 73 are mounted on the rack 1 in opposite arrangement, and are separately arranged on two sides of the spot welding slide plate 62 along the Y direction. The position sensor three 73 is used to detect the Y direction position of the spot welding slide plate 62, and is signal connected with an external electric control box. The electric control box is signal connected with the front face clamping cylinder 22, the front face rotating motor 32, the lifting motor 43, the spot welding machine 5, the spot welding rotating linear motor 63 and the spot welding translation linear motor 71. Preferably, the spot welding rotating linear motor 63 and the spot welding translation linear motor 71 are both servo linear motors.

[0052] In use, first, the front face of the hood to be welded is placed on the tooling platform 21 by manual operation. It should be noted that the front face of the hood has been fixed together by three arc-shaped mesh hole plates through preliminary spot welding, and the present application is used to further spot weld the front face of the hood after initial welding to make it finally shaped. After the front face of the hood is placed on the tooling platform 21, it is positioned by the front face positioning pin 23 and the symbol-shaped positioning assembly 24, and then is clamped and fixed by the front face clamping cylinder 22.

[0053] Then, the tooling platform 21 and the front face of the hood are rotated around the X axis by the front face rotating motor 32, and are lifted by the lifting motor 43, so as to adjust the height and the turning angle of the front face of the hood to adapt to the welding requirements of the spot welding machine 5. In the process of adjusting the front face of the hood, the spot welding machine 5 is rotated around the Z axis by the spot welding rotating linear motor 63, and is translated along the Y direction by the spot welding translation linear motor 71, so as to adjust the welding direction and the welding position of the spot welding machine 5, and make the spot welding machine 5 spot weld the corresponding spot welding positions on the front face of the hood. After all the spot welding actions are completed, all are reset to the initial positions.

[0054] Therefore, the automatic spot welding of the front face of the hood is realized by the present application, the problems of welding defects of the welding points caused by the shaking of the handheld device in the original manual cooperative operation spot welding, and the poor consistency of the spot welding distance caused by the manual spot welding are solved, the problem of high requirement for the operation skill level of workers is solved, the consistency of the welding of the front face of the hood is ensured, and the welding efficiency is improved; the operation after improvement is simple, and the automation degree is improved.

[0055] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hood front face welding device comprising a frame; characterized in that, The rack is provided with a front face adjusting station and a spot welding station matched with the front face adjusting station; the spot welding station is arranged along the Y direction on one side of the front face adjusting station; The front face adjusting station comprises a front face fixing mechanism, a front face rotating mechanism and a front face lifting mechanism; the front face fixing mechanism is used for fixing the front face of the hood and making the welding position of the front face face the spot welding station; the front face rotating mechanism is matched with the front face fixing mechanism and is used for driving the front face fixing mechanism to rotate reciprocatingly about the X axis; and the front face lifting mechanism is matched with the front face rotating mechanism and is used for driving the front face rotating mechanism to move reciprocatingly along the Z direction. The spot welding station comprises a spot welding machine, a spot welding rotating mechanism and a spot welding translation mechanism; the spot welding machine is installed on the spot welding rotating mechanism and the welding gun of the spot welding machine is arranged to face the front face fixing mechanism; the spot welding rotating mechanism is used for driving the spot welding machine to rotate reciprocatingly about the Z axis; and the spot welding translation mechanism is matched with the spot welding rotating mechanism and is used for driving the spot welding rotating mechanism to move reciprocatingly along the Y direction.

2. The hood front face welding apparatus of claim 1, wherein The front face fixing mechanism comprises a tooling platform, and two front face clamping cylinders are installed on the tooling platform.

3. The hood front face welding apparatus of claim 2, wherein At least one front face positioning pin and two symbol-shaped positioning assemblies are installed on the tooling platform, and the two symbol-shaped positioning assemblies are arranged on the two sides of the front face positioning pin along the X direction.

4. The hood front face welding apparatus of claim 2 wherein, The front face rotating mechanism comprises two rotating bearing seats, and the two rotating bearing seats are arranged oppositely along the X direction. The power shaft of the front face rotating motor passes through one of the rotating bearing seats and is connected with the tooling platform.

5. The hood front face welding apparatus of claim 4 wherein, The front face lifting mechanism comprises two lifting assemblies, and the lifting assemblies are matched with the rotating bearing seats. The lifting assembly comprises a lifting plate, the lifting plate is fixedly connected with the rotating bearing seat, a Z-direction sliding block sliding rail assembly is installed between the lifting plate and the rack, a lifting motor is installed on the rack, and the power shaft of the lifting motor is connected with the lifting plate through a Z-direction gear and rack assembly.

6. The hood front face welding apparatus of claim 5, wherein A transmission shaft is connected between the two Z-direction gear and rack assemblies installed on the two lifting plates, and the power shaft of the lifting motor is connected with the transmission shaft.

7. The hood front face welding apparatus of claim 5 wherein, A position sensor one is installed on the tooling platform, and the position sensor one is installed at the center of the tooling platform. A position sensor two is installed on the rack, and the position sensor two is used for detecting the Z-direction position of the front face of the hood.

8. The hood front face welding apparatus of claim 1 wherein, The spot welding rotating mechanism comprises a spot welding column, the spot welding column is rotatably installed on a spot welding sliding plate about the Z axis, and the top end of the spot welding column is installed with the spot welding machine; A spot welding rotating linear motor is installed on the spot welding sliding plate, and the spot welding rotating linear motor is connected with the spot welding column through a Y-direction gear and rack assembly.

9. The hood front face welding apparatus of claim 8, wherein The spot welding translation mechanism comprises a spot welding translation linear motor, the spot welding translation linear motor is installed on the rack, and the power shaft of the spot welding translation linear motor is connected with the spot welding sliding plate. Two Y-direction sliding block sliding rail assemblies are installed between the spot welding sliding plate and the rack.

10. The hood front face welding apparatus of claim 9, wherein, Two position sensors three are oppositely arranged on the rack, and the two position sensors three are arranged on the two sides of the spot welding sliding plate along the Y direction.

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