Welding device and welding method

Abstract

The invention belongs to the welding technology, and particularly relates to a welding device and a welding method.The welding device comprises a welding machine bottom plate, a supporting frame, a welding machine tool body and a welding gun moving device; the supporting frame is fixed to the fixed bottom plate, and the welding machine tool body is connected with the supporting frame. A welding machine head and a welding tailstock are arranged on the welding machine tool body, a wire gauge is arranged on the welding tailstock, a sliding block corresponding to the wire gauge is arranged at the bottom of the welding tailstock, a tailstock supporting plate is arranged on the upper end face of the welding tailstock, and a rotating support is arranged on the tailstock supporting plate. The welding machine head is provided with a driving device and a bearing seat, the driving device is connected with the main shaft, the welding gun moving device is located on the upper end face of the welding machine head, and a welding gun is arranged on the welding gun moving device. The double-gun welding machine has the advantages that the double guns are used for welding the supporting sleeve at the same time, the welding quality and efficiency of the girth welding supporting sleeve are guaranteed, after the supporting sleeve is welded, the double guns retreat, the machine body rotates by a specified angle, a tailstock welding gun starts to work after the machine body serves as the optimal welding angle, welding meshing and forming are greatly improved, and the welding efficiency is improved.

Description

Technical Field

[0001] The present application relates to welding technology, and specifically to a spot welding device and method, including a welding machine base plate, a support frame, a welding machine bed and a welding gun moving device. Background Art

[0002] The welding of the front cylinder jacket support sleeve and support plate has always been an important process. The existing welding method is circumferential seam welding with a welding positioner. The support sleeve is welded first and then the support plate. The welding position of the support plate does not change, and it is welded at the same angle as the support sleeve. The position of the welding gun and the workpiece angle determine the degree and quality of the weld bite. This welding method does not meet the optimal requirements for weld formation and bite, and is prone to hidden dangers. Summary of the Invention

[0003] The welding efficiency and angle of the front cylinder outer shell support plate and support sleeve have always been insufficient. By designing a variable position three-gun welding machine, the welding efficiency and welding quality of the support sleeve and support plate are improved, the welding shape and angle are optimized, and the welding strength is enhanced. The technical solution is:

[0004] A welding device comprises a welding machine base plate, a support frame, a welding machine bed and a welding gun moving device; the support frame is fixed on the fixed base plate, and the welding machine bed is connected to the support frame; a welding headstock and a welding tailstock are provided on the welding machine bed, a wire gauge is provided on the welding tailstock, a slider is provided on the bottom of the welding tailstock for installation corresponding to the wire gauge, a tailstock support plate is provided on the upper end surface of the welding tailstock, and a rotating bracket is provided on the tailstock support plate; the welding headstock is provided with a driving device and a bearing seat, the driving device is connected to the main shaft, the main shaft is installed in the bearing seat, the main shaft is connected to a tapered roller bearing, a chuck flange is provided on the tapered roller bearing, the chuck flange is connected to a two-jaw chuck, the welding gun moving device is located on the upper end surface of the welding headstock, and a welding gun is provided on the welding gun moving device.

[0005] Preferably, the welding gun moving device includes a moving plate, a guide rail slider matching the guide rail is provided at the bottom of the moving plate, a vertical adjustment slide is provided on the upper end surface of the moving plate, a horizontal adjustment slide is provided on the vertical adjustment slide, a welding gun support frame is provided on the horizontal adjustment slide, the welding gun support frame is provided with two welding gun adjustment frames, each of the welding gun adjustment frames is provided with a welding gun tube, and a welding gun is provided on the welding gun tube.

[0006] Preferably, two support frames are provided, which are respectively located on both sides of the welding machine bed. An oil cylinder is provided on the welding machine base plate, and the piston rod of the oil cylinder is hinged to the welding machine bed. A limit block is provided on the welding machine base plate, and the limit block is two triangular structures. The welding machine base plate is located on one side of the welding bed head and a fixing plate is provided on the fixing plate, which is provided with two triangular cutouts for installation and use in conjunction with the limit block.

[0007] Preferably, a displacement fixed pull plate and a displacement fixed rear pull plate are provided on one side of the welding machine bed, the displacement fixed rear pull plate is connected to the bottom of the displacement cylinder, the piston rod of the bottom of the displacement cylinder is connected to the displacement fixed pull plate, and the displacement fixed pull plate is connected to the welding tailstock.

[0008] Preferably, a welding gun clamp is provided on the rotating bracket, a welding gun adjustment frame is provided above the welding gun clamp, a welding gun fixing frame is provided below, a welding gun tube is provided on the welding gun fixing frame, and a welding gun is provided on the welding gun tube.

[0009] Preferably, the rotating bracket is fixedly connected to the tailstock support plate through a reinforcing bracket, the tailstock support plate is provided with a tailstock reinforcing plate, and the tailstock reinforcing plate is fixed on the welding tailstock; the end of the rotating bracket is provided with a top, and the top and the chuck flange are used to fix the workpiece.

[0010] Preferably, the drive transposition includes a motor 1, a large gear and a small gear, the motor 1 is provided with a servo connecting shaft, the small gear is sleeved on the servo connecting shaft, the small gear is meshed with the large gear, and the main shaft is sleeved on the large gear.

[0011] A welding method comprises the following steps:

[0012] S1. Initial state:

[0013] Adjust the welding gun moving device so that it is located on the side of the welding bed head; the welding tailstock is located at the end of the welding machine bed; the welding machine bed is in a horizontal state;

[0014] S2. Clamp the workpiece between the center and the chuck flange, and move the welding tailstock to clamp it horizontally;

[0015] S3. Adjust the welding gun moving device to the top of the workpiece, start the drive device, the workpiece begins to rotate, start the two welding guns on the welding gun moving device, so that it spot welds the inner and outer edges of the workpiece. After completion, stop spot welding and proceed to the next step;

[0016] S3. Retract the piston rod of the cylinder, move the welding head downward, and the two blocks on the limit block penetrate into the two triangular cutouts of the fixed plate; at this time, the horizontal angle between the spot welding body and the bottom plate of the welding machine is 30-60 degrees;

[0017] S4. The welding gun of the welding tailstock starts working, and the spot welding is completed as the workpiece rotates;

[0018] S5. After the external clamping device clamps the workpiece, move the welding gun moving device and welding tailstock, and remove the workpiece.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] The design of the variable position three-gun welding machine starts from changing the welding angle of the support plate. The two guns weld the support sleeve at the same time to ensure the welding quality and efficiency of the circumferential seam welding support sleeve. After the support sleeve welding is completed, the two guns retract and the bed rotates to a specified angle. As the optimal welding angle, the tailstock welding gun starts working, which makes great improvements to the welding bite and forming, not only improving the welding efficiency, but also ensuring the welding strength. Through the test and verification after welding, the weld has good forming degree and high strength, which fully meets the design expectations and has a significant effect on improving the welding quality of the front cylinder sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional drawing for this application;

[0022] Figure 2 This is the main view of this application;

[0023] Figure 3 This is the rear view of this application;

[0024] Figure 4 For this application local installation;

[0025] Figure 5 A device for moving the welding gun;

[0026] In the picture:

[0027] 100- welding machine base plate, 101- support frame, 102- welding machine bed, 103- limit block;

[0028] 3-Welding headstock, 4-Wire gauge, 5-Slider, 6-Welding tailstock, 7-Rotating bracket, 8-Top, 9-Welding gun clamp, 10-Welding gun adjustment bracket (1), 11-Welding gun fixing bracket (1), 12-Welding gun tube (1), 13-Workpiece; 14-Reinforcement bracket, 15-Two-jaw chuck, 16-Bearing seat, 17-Tapered roller bearing, 18-Spindle, 19-Chuck flange, 20-Motor (1), 21-Pinion, 22-Gear, 23-Servo connecting shaft;

[0029] 30-adjustment slide, 301-vertical adjustment slide, 302-horizontal adjustment slide; 31-welding gun support frame, 32-welding gun adjustment frame, 33-welding gun tube, 34-guide rail, 35-guide rail slider, 36-displacement fixed pull plate, 37-displacement earring head, 38-displacement piston rod, 39-displacement cylinder, 41-displacement cylinder bottom, 42-displacement fixed rear pull plate.

[0030] 601-tailstock support plate, 602-tailstock reinforcement plate, 603-connection reinforcement plate. DETAILED DESCRIPTION

[0031] The technical solution of the present application is described in detail below through specific embodiments and drawings. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application, and the specific technical features can be combined with each other.

[0032] Figure 1-3 As shown, a welding device includes a welding machine base plate 100, a support frame 101, a welding machine bed 102 and a welding gun moving device; the support frame 101 is fixed on the fixed base plate 100, and two support frames 101 are provided, respectively located on both sides of the welding machine bed 102, and the welding machine bed 102 is connected to the support frame 102; the welding machine bed 102 is provided with a welding head 3 and a welding tailstock 6, the welding tailstock 6 is provided with a wire gauge 4 (HGH45AC), and the bottom of the welding tailstock 6 is provided with a slider 5 (HGH45AC) installed corresponding to the wire gauge 4, The upper end face of the welding tailstock 6 is provided with a tailstock support plate 601, and the tailstock support plate 601 is provided with a rotating bracket 7; the welding headstock 3 is provided with a driving device and a bearing seat 16, and the driving device is connected to the main shaft 18, and a sealing ring is provided between the two. The main shaft 18 is installed in the bearing seat 16, and the main shaft 18 is connected to the tapered roller bearing 17, and the tapered roller bearing 17 is provided with a chuck flange 19, and the chuck flange 19 is connected to the two-jaw chuck 15. The welding gun moving device is located on the upper end face of the welding headstock 3, and the welding gun moving device is provided with a welding gun.

[0033] The rotating bracket 7 is fixedly connected to the tailstock support plate 601 through the reinforcing bracket 14. The tailstock support plate 601 is provided with two tailstock reinforcing plates 602. A connecting reinforcing plate 603 is provided between the two tailstock reinforcing plates 602. The tailstock reinforcing plates 602 are fixed on the welding tailstock 6. The end of the rotating bracket 7 is provided with a top 8. The top 8 and the chuck flange 19 are used to fix the workpiece.

[0034] A welding gun clamp 9 is provided on the rotating bracket 7, a welding gun adjustment frame 10 is provided above the welding gun clamp 9, and a welding gun fixing frame 11 is provided below the welding gun fixing frame 11, a welding gun tube 12 is provided on the welding gun tube 12, and a welding gun is provided on the welding gun tube 12.

[0035] Figure 5 As shown, the welding gun moving device includes a moving plate 46, and a guide rail slider 35 matching the guide rail 34 is provided at the bottom of the moving plate 46. The upper end surface of the moving plate 46 is provided with a vertical adjustment slide 301, and a horizontal adjustment slide 302 is provided on the vertical adjustment slide 301. A welding gun support frame 31 is provided on the horizontal adjustment slide 302, and the welding gun support frame 31 is provided with two welding gun adjustment frames 32, and each of the welding gun adjustment frames 32 is provided with a welding gun tube 33, and a welding gun is provided on the welding gun tube 33.

[0036] The welding machine base plate 100 is provided with an oil cylinder 27, the piston rod of the oil cylinder 27 is hinged to the welding machine bed 102, the welding machine base plate 100 is provided with a limit block 103, the limit block 103 is two triangular structures, the welding machine base plate 100 is located on one side of the welding head 3 and is provided with a fixing plate, the fixing plate is provided with two triangular cuts, and is installed and used in conjunction with the limit block 103.

[0037] A displacement fixed pull plate 36 and a displacement fixed rear pull plate 42 are provided on one side of the welding machine bed 102. The displacement fixed pull plate 36 is fixedly connected to the displacement earring head 37. The displacement fixed rear pull plate 42 is connected to the displacement cylinder bottom 41. The displacement cylinder bottom 41 is used in conjunction with the displacement cylinder 39. The displacement piston rod 38 of the displacement cylinder 39 is connected to the displacement earring head 37. The displacement fixed pull plate 36 is connected to the welding tailstock 6.

[0038] Figure 4 As shown, the drive transposition includes a motor 20, a large gear 22 and a small gear 21. The motor 20 is provided with a servo connecting shaft 23, the small gear 21 is sleeved on the servo connecting shaft 23, the small gear 21 is engaged with the large gear 22, and the main shaft 18 is sleeved on the large gear 22.

[0039] A welding method comprises the following steps:

[0040] S1. Initial state:

[0041] Adjust the welding gun moving device so that it is located on the side of the welding bed 3; the welding tailstock 6 is located at the end of the welding machine bed 102; the welding machine bed 102 is in a horizontal state;

[0042] S2. Clamp the workpiece between the top 8 and the chuck flange 19, and move the welding tailstock 6 to clamp it horizontally; S3. Adjust the welding gun moving device to the entire top of the workpiece, start the drive device, the workpiece begins to rotate, start the two welding guns on the welding gun moving device, and spot weld the inner and outer edges of the workpiece. After completion, stop spot welding and proceed to the next step;

[0043] S3 retracts the piston rod of the cylinder 27, the welding head 3 moves downward, the two blocks on the stopper 103 penetrate into the two triangular cutouts of the fixing plate; at this time, the horizontal angle between the spot welding body 102 and the welding machine bottom plate 100 is 30-60 degrees (eg, 45 degrees);

[0044] S4 start welding tailstock 6 of the welding gun began to work, as the workpiece rotates, spot welding is completed;

[0045] S5. After the external clamping device clamps the workpiece, the welding gun moving device and the welding tailstock 6 are removed, and the workpiece is removed.

[0046] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A welding device, characterized in that: It includes a welding machine base plate, a support frame, a welding machine bed and a welding gun moving device; the support frame is fixed on the fixed base plate, and the welding machine bed is connected to the support frame; the welding machine bed is provided with a welding headstock and a welding tailstock, the welding tailstock is provided with a wire gauge, the bottom of the welding tailstock is provided with a slider installed corresponding to the wire gauge, the upper end surface of the welding tailstock is provided with a tailstock support plate, and the tailstock support plate is provided with a rotating bracket; the welding headstock is provided with a driving device and a bearing seat, the driving device is connected to the main shaft, the main shaft is installed in the bearing seat, the main shaft is connected to the tapered roller bearing, the tapered roller bearing is provided with a chuck flange, the chuck flange is connected to the two-jaw chuck, the welding gun moving device is located on the upper end surface of the welding headstock, and the welding gun is provided on the welding gun moving device.

2. A welding device according to claim 1, characterized in that: The welding gun moving device includes a moving plate, a guide rail slider matching the guide rail is provided at the bottom of the moving plate, a vertical adjustment slide is provided on the upper end surface of the moving plate, a horizontal adjustment slide is provided on the vertical adjustment slide, a welding gun support frame is provided on the horizontal adjustment slide, and the welding gun support frame is provided with two welding gun adjustment frames, each of the welding gun adjustment frames is provided with a welding gun tube, and a welding gun is provided on the welding gun tube.

3. A welding device according to claim 1, characterized in that: There are two support frames, which are respectively located on both sides of the welding machine bed. An oil cylinder is provided on the welding machine base plate. The piston rod of the oil cylinder is hinged to the welding machine bed. A limit block is provided on the welding machine base plate. The limit block is two triangular structures. A fixing plate is provided on one side of the welding head of the welding machine base plate. Two triangular cuts are provided on the fixing plate, which are installed and used in conjunction with the limit block.

4. A welding device according to claim 2, characterized in that: A displacement fixed pull plate and a displacement fixed rear pull plate are provided on one side of the welding machine bed. The displacement fixed rear pull plate is connected to the bottom of the displacement cylinder. The piston rod of the bottom of the displacement cylinder is connected to the displacement fixed pull plate. The displacement fixed pull plate is connected to the welding tailstock.

5. A welding device according to claim 1, characterized in that: A welding gun clamp is provided on the rotating bracket, a welding gun adjusting frame is provided above the welding gun clamp, a welding gun fixing frame is provided below the welding gun fixing frame, a welding gun tube is provided on the welding gun tube, and a welding gun is provided on the welding gun tube.

6. A welding device according to claim 1, characterized in that: The rotating bracket is fixedly connected to the tailstock support plate through a reinforcing bracket. The tailstock support plate is provided with a tailstock reinforcing plate, and the tailstock reinforcing plate is fixed on the welding tailstock. The end of the rotating bracket is provided with a top, and the top and the chuck flange are used to fix the workpiece.

7. A welding device according to claim 1, characterized in that: The driving transposition includes a motor 1, a large gear and a small gear. The motor 1 is provided with a servo connecting shaft, the small gear is sleeved on the servo connecting shaft, the small gear is meshed with the large gear, and the main shaft is sleeved on the large gear.

8. A welding method, applicable to the spot welding device according to any one of claims 2 to 7, characterized in that: The following steps are involved: S1. Initial state: Adjust the welding gun moving device so that it is located on the side of the welding bed head; the welding tailstock is located at the end of the welding machine bed; the welding machine bed is in a horizontal state; S2. Clamp the workpiece between the center and the chuck flange, and move the welding tailstock to clamp it horizontally; S3. Adjust the welding gun moving device to the top of the workpiece, start the drive device, the workpiece begins to rotate, start the two welding guns on the welding gun moving device, so that it spot welds the inner and outer edges of the workpiece. After completion, stop spot welding and proceed to the next step; S3. Retract the piston rod of the cylinder, move the welding head downward, and the two blocks on the limit block penetrate into the two triangular cutouts of the fixed plate; at this time, the horizontal angle between the spot welding body and the bottom plate of the welding machine is 30-60 degrees; S4. The welding gun of the welding tailstock starts working, and the spot welding is completed as the workpiece rotates; S5. After the external clamping device clamps the workpiece, move the welding gun moving device and welding tailstock, and remove the workpiece.

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