Steel plate welding device and steel plate welding method

Abstract

The present invention relates to the field of welding technology, and is specifically a steel plate welding device and a steel plate welding method. A steel plate welding device comprises a device frame, on which rollers for conveying steel plates are installed, the gap between two steel plates to be welded is the welding position, and there is also a welding arm on the device frame, and a welding gun is provided under the welding arm: the welding gun is also installed under the welding arm through a first high-frequency vibration device; in the steel plate welding method, the steel plates are welded with a welding gun, and during the welding process, the welding gun is welded in vibration. Such a steel plate welding device and steel plate welding method have the advantages that the weld is not easy to crack and the welding quality is good.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, in particular to a welding device and a welding method. Background Art

[0002] The welding of the steel plates is to weld two steel plates together to form a complete steel plate.

[0003] The steel plate welding device has a device frame, on which rollers for conveying steel plates are installed. The rollers convey the steel plates, and the gap between the two steel plates is the welding position. There is also a welding arm on the device frame, and a welding gun is provided under the welding arm. Under the action of the rollers, the gap between the two steel plates always moves under the welding gun, and the welding gun welds the two steel plates.

[0004] In the prior art, the welding gun is fixed under the welding arm. During the welding process, the welding gun does not move, which has the disadvantage of an unstable welding position, thus affecting the welding quality of the steel plate. Summary of the invention

[0005] The purpose of the present invention is to provide a welding device and a welding method for steel plates with good welding quality and less cracking at the welding joint in view of the above-mentioned disadvantages.

[0006] The technical solution adopted by the steel plate welding device of the present invention is: a steel plate welding device, including a device frame, on which rollers for conveying steel plates are installed, the gap between the two steel plates to be welded is the welding position, and there is also a welding arm on the device frame, and a welding gun is provided under the welding arm, wherein the characteristic is that the welding gun is also installed under the welding arm through a first high-frequency vibration device.

[0007] Furthermore, the first high-frequency vibration device includes a left-right vibration device and a front-back vibration device.

[0008] Furthermore, a second low-amplitude vibration device is installed on the device frame below the welding gun, and the second low-amplitude vibration device contacts the steel plate conveyed by the roller.

[0009] Furthermore, during welding, the steel plate is transported from back to front, and a pair of vibration-damping rollers are provided in front of the second low-amplitude vibration device, the pair of vibration-damping rollers include an upper vibration-damping roller and a lower vibration-damping roller, the outer periphery of the upper vibration-damping roller and the lower vibration-damping roller have vibration-damping sleeves made of rubber, the upper vibration-damping roller and the lower vibration-damping roller are arranged front and back in the length direction, and the lower side of the upper vibration-damping roller and the upper side of the lower vibration-damping roller are welded steel plate channels.

[0010] Furthermore, during welding, the steel plates to be welded are transported from the back to the front, and a flame nozzle is provided behind the welding gun to face the welding position of the steel plates to be welded.

[0011] Furthermore, there is a clamping plate on the device frame and in front of the lower part of the welding gun, and the clamping plate is a clamping plate for clamping the two sides of the welded steel plate.

[0012] The technical solution adopted by the steel plate welding method of the present invention is: the steel plate welding method uses a welding gun to weld the steel plate, and during the welding process, the welding gun welds in vibration.

[0013] The beneficial effects of the present invention are as follows: such a steel plate welding device and a steel plate welding method have the advantages that the welding part is not easy to crack and the welding quality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top structure of the present invention.

[0015] Figure 2 yes Figure 1 Schematic diagram of the cross section along the A-A direction.

[0016] Figure 3 yes Figure 2 Schematic diagram of the cross-section along the B-B direction.

[0017] Among them: 1, device frame 2, roller 3, welding position 4, welding arm 5, welding gun 6, first high-frequency vibration device 61, left and right vibration device 62, front and back vibration device 7, second low-amplitude vibration device 8, upper vibration-reducing roller 9, lower vibration-reducing roller 10, vibration-reducing sleeve 11, flame nozzle 12, clamping plate. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] like Figure 1 , 2 As shown, a steel plate welding device includes a device frame 1, on which rollers 2 for conveying steel plates are installed, the gap between the two steel plates to be welded is the welding position 3, and there is also a welding arm 4 on the device frame, and a welding gun 5 is provided under the welding arm, wherein the welding gun is also installed under the welding arm through a first high-frequency vibration device 6.

[0020] The working principle is as follows: during the welding process of the welding gun, under the action of the first high-frequency vibration device, the welding point continuously changes position, and the change is high-frequency, which can achieve higher strength of the welding point, thereby achieving the purpose of the present invention.

[0021] The vibration device is a vibration device in the prior art, and can be a mechanical vibration device or an electromagnetic vibration device.

[0022] The welding gun of this device is suitable for flux welding, electrode welding, double-protection welding, etc.

[0023] The best: the amplitude of the first high-frequency vibration device is 1-2 mm and the frequency is 10-15 Hz. This can achieve better welding results.

[0024] Furthermore, the first high-frequency vibration device includes a left-right vibration device 61 and a front-back vibration device 62, such as Figure 3 shown.

[0025] Furthermore, a second low-amplitude vibration device 7 is installed on the device frame below the welding gun, and the second low-amplitude vibration device contacts the steel plate conveyed by the roller.

[0026] The working principle is such that after welding is completed, the welding is still in an unstable device. Under the action of the second low-amplitude vibration device, the flux is more solid, and the welding point strength can be higher, further achieving the purpose of the present invention.

[0027] The best: the amplitude of the second low-amplitude vibration device is less than 0.1 mm, and the frequency is 20-30 Hz. This can achieve a better welding effect. If the amplitude of the second low-amplitude vibration device exceeds 0.5 mm, the strength of the welding will be reduced.

[0028] Furthermore, during welding, the steel plate is transported from back to front, and a pair of vibration-damping rollers are provided in front of the second low-amplitude vibration device, the pair of vibration-damping rollers include an upper vibration-damping roller 8 and a lower vibration-damping roller 9, the outer periphery of the upper vibration-damping roller and the lower vibration-damping roller are provided with a vibration-damping sleeve 10 made of rubber, the upper vibration-damping roller and the lower vibration-damping roller are arranged front and back in the length direction, and the lower side of the upper vibration-damping roller and the upper side of the lower vibration-damping roller are welded steel plate channels.

[0029] The device is arranged in this way so that the flux is preferably in a stable state after a period of time after the steel plate welding is completed. At this time, the welding point is under the action of the vibration-reducing roller, which reduces the influence of the second low-amplitude vibration device on the welding position, and can ensure that the flux at the welding point is more stable, thereby achieving the effect of improving quality.

[0030] Furthermore, during welding, the steel plates to be welded are transported from the back to the front, and a flame nozzle 11 is provided behind the welding gun to face the welding position of the steel plates to be welded.

[0031] The device is arranged in this way, so that the welding part of the steel plate is first heated before welding, which can achieve a good welding effect.

[0032] Furthermore, there is a clamping plate 12 on the device frame and in front of the lower part of the welding gun, and the clamping plate is a clamping plate for clamping the two sides of the welded steel plate.

[0033] The clamping plate only needs to be able to clamp the welded steel plates from both sides toward the middle.

[0034] The device is arranged in this way, which can promote the connection between the flux and the steel plate at the welding point and improve the welding quality.

[0035] The welding method of the present invention is further described below in conjunction with embodiments.

[0036] Example 1.

[0037] The steel plate is welded with the welding gun in a stationary state.

[0038] The quality of the welding is average.

[0039] Example 2

[0040] The above equipment is used to weld the steel plate with a welding gun. During the welding process, the welding gun is welded in vibration, the amplitude is 1 to 2 mm, and the frequency is 10 to 15 Hz. The welding quality of the steel plate is improved to varying degrees.

[0041] Example 3

[0042] In the above-mentioned embodiment 2, the welding gun vibration device includes a left-right vibration device and a front-back vibration device, and the welding quality is better.

[0043] Example 4

[0044] In the above-mentioned embodiments 2 and 3, within 5 seconds after the welding is completed, the welded steel plates are vibrated with a low amplitude, wherein the low amplitude vibration is less than 0.1 mm and the frequency is 20-30 Hz, so that the welding strength is higher.

[0045] Example 5

[0046] In the above embodiment, the welding part is heated before welding the steel plates, so that the welding strength is higher.

[0047] Example 6

[0048] In the above embodiment, the welding part is heated before welding the steel plates, so that the welding strength is higher.

[0049] The heating temperature is preferably 400°C - 500°C.

[0050] Example 7

[0051] In the above embodiment, the two sides of the welded steel plates are clamped after the steel plates are welded, so that the welding strength is higher.

[0052] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are all covered by the patent scope of the present invention.

Claims

1. A steel plate welding device, comprising a device frame, on which rollers for conveying steel plates are mounted, the gap between two steel plates to be welded is the welding position, and a welding arm is also mounted on the device frame, and a welding gun is provided below the welding arm. Its characteristics are: The welding gun is also installed under the welding arm through a first high-frequency vibration device; there is also a clamping plate on the device frame and in front of the welding gun, and the clamping plate is a clamping plate for clamping the two sides of the welded steel plate; during the welding process of the welding gun, under the action of the first high-frequency vibration device, the welding point constantly changes position, and the change is high-frequency, so that the welding point has a higher strength; The first high-frequency vibration device includes a left-right vibration device and a front-back vibration device; the amplitude of the first high-frequency vibration device is 1 to 2 mm and the frequency is 10 to 15 Hz; A second low-amplitude vibration device is installed on the device frame below the welding gun, and the second low-amplitude vibration device contacts the steel plate conveyed by the roller; the amplitude of the second low-amplitude vibration device is less than 0.1 mm, and the frequency is 20 to 30 Hz; During welding, the steel plate is transported from the back to the front, and a pair of vibration-damping rollers is provided in front of the second low-amplitude vibration device, the pair of vibration-damping rollers includes an upper vibration-damping roller and a lower vibration-damping roller, the outer peripheries of the upper vibration-damping roller and the lower vibration-damping roller are provided with vibration-damping sleeves made of rubber, the upper vibration-damping roller and the lower vibration-damping roller are arranged front and back in the length direction, and the lower side of the upper vibration-damping roller and the upper side of the lower vibration-damping roller are welded steel plate channels; A flame spray head is arranged behind the welding gun to face the welding position of the steel plate to be welded.

2. A method for welding steel plates, comprising: using the steel plate welding device of claim 1 and a welding gun to weld the steel plates, wherein the welding gun is welded in vibration during the welding process; clamping the two sides of the welded steel plates after the steel plates are welded; and during the welding process, the welding point of the welding gun continuously changes position under the action of the first high-frequency vibration device; The first high-frequency vibration device includes left-right vibration and front-back vibration; Within 5 seconds after welding is completed, the welded steel plate is vibrated at a low amplitude, wherein the low amplitude vibration is less than 0.1 mm and the frequency is 20 to 30 Hz; The welding part is heated before welding the steel plates.

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