A static shoulder rolling welding device and rolling welding method

Abstract

The present invention discloses a static shoulder rolling welding device and rolling welding method, comprising a static shoulder and a rolling component, wherein the static shoulder drives the rolling component to roll the surface of a workpiece in the process of moving along the welding forward direction; the rolling component is distributed around the static shoulder, and the workpiece surface around the static shoulder is rolled in the process of following the rolling component; the welding head of the rolling component relative to the static shoulder is elastically connected through an elastic component, and the downward pressure of the static shoulder on the workpiece surface and the elastic force of the elastic component are relative reaction forces. The present invention arranges a structural design of elastic downward pressure rolling the workpiece surface around the static shoulder, so that the material in the forward direction and side position of the static shoulder is kept flat, and the welding is not formed due to shoveling, furrowing, etc.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a static shoulder rolling welding device and a rolling welding method. Background Art

[0002] The welding method with rolling wheels used in the industry is mainly concentrated on the dynamic shoulder, and the technology of using rolling wheels for the static shoulder is almost blank. The flash generated by the dynamic shoulder welding of aluminum alloy battery boxes is large, and the welding deformation is large. Therefore, the industry promotes the use of static shoulders instead of dynamic shoulders to reduce flash and deformation, and relatively reduce labor. However, the use scenarios of dynamic shoulders are relatively wide, and the use scenarios of static shoulders are relatively narrow due to structural problems. When using the static shoulder alone during welding, due to the limitation of product tolerance, there will be height differences in the forward direction, welding scraping, welding furrows, and welding non-formation. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a static shoulder rolling welding device and a rolling welding method. By arranging an elastic downward pressure structure around the static shoulder to roll the workpiece surface, the material in the forward direction and side position of the static shoulder can be kept flat, avoiding shoveling, plowing, etc. that cause welding to be unformed.

[0004] Technical solution: To achieve the above-mentioned purpose, a static shoulder rolling welding device of the present invention comprises a static shoulder and a rolling component, wherein the static shoulder drives the rolling component to roll the surface of the workpiece during the movement along the welding forward direction;

[0005] The rolling component is distributed on the peripheral side of the static shoulder, and the rolling component rolls the workpiece surface on the peripheral side of the static shoulder during the following movement; the welding head of the rolling component relative to the static shoulder is elastically connected through an elastic component, and the downward pressure of the static shoulder on the workpiece surface and the elastic force of the elastic component are relative reaction forces.

[0006] Furthermore, the rolling component includes a front rolling component and a pair of side rolling components; the front rolling component is located at the front end of the forward direction of the static shoulder, and the surface of the workpiece in front of the forward direction of the static shoulder is rolled by the front rolling component in the follow-up state; the pair of side rolling components are symmetrically distributed on both sides of the static shoulder, and the surface of the workpiece on both sides of the static shoulder is rolled by the side rolling components in the follow-up state; the front rolling component and the pair of side rolling components are distributed in an isosceles triangle structure relative to the static shoulder.

[0007] Furthermore, it includes a rolling component frame corresponding to the rolling component, the rolling component frame includes a front rolling component frame and a side rolling component frame; the front rolling component is installed on the front rolling component frame corresponding to the rolling fit, and the side rolling component is installed on the side rolling component frame corresponding to the rolling fit, and a moving drive mechanism is connected between the side rolling component frame and the front rolling component frame, and the side rolling component frame can be driven by the moving drive mechanism to drive the side rolling component frame to move closer to or away from the front rolling component in the welding forward direction, so as to adjust the distance between the side rolling component and the front rolling component in the welding forward direction, and change the rolling position point of the workpiece surface on the side of the static shoulder of the corresponding side rolling component.

[0008] Further, when the pair of side rolling components are located on the opposite side of the static shoulder, the central axis of the side rolling component passes through the center of the static shoulder to form a center line a, the central axis of the front rolling component is b, and the adjustment position range of the side rolling component is between the center line a and the center axis b, including the center line a position and excluding the center axis b position.

[0009] Furthermore, it includes a rolling component bracket, which is installed on the welding head by a lock nut; a telescopic rod is connected between the rolling component frame and the rolling component bracket, and the elastic component is a pressure spring sleeved on the telescopic rod, and the pressure spring is elastically arranged between the rolling component bracket and the front rolling component frame.

[0010] Furthermore, a guide rail is provided in the gap between the side rolling component frame and the front rolling component frame. The guide rail is installed on the side of the front rolling component frame. When the side rolling component is driven by the mobile driving mechanism to move and adjust the position, it is guided by the guide rail.

[0011] Furthermore, a deformable pressure detection device is respectively connected between the two side rolling component frames and the front rolling component frame. When the rolling position point of the side rolling component is adjusted by providing driving force through the mobile driving mechanism, pressure detection is performed by the deformable pressure detection device during the movement of the side rolling component frame relative to the front rolling component frame.

[0012] Furthermore, the mobile driving mechanism includes a driving screw and a driving part connected to the driving screw, and the driving screw rotatably connected to the front rolling component frame is threadedly connected to the side rolling component frame.

[0013] A rolling welding method of a static shoulder rolling welding device, during the welding process, the welding head moves along the weld, the stirring shaft of the welding head rotates to weld the weld, and during the forward movement of the welding head, the rolling parts are driven to roll the surface of the workpiece, wherein: the front rolling parts roll the workpiece surface in front of the forward direction of the static shoulder, and the side rolling parts roll the workpiece surfaces on both sides of the static shoulder, thereby forming an enveloping covering rolling of the workpiece surface around the static shoulder, so that the material in the forward direction and side position of the static shoulder remains flat;

[0014] During the rolling process of the rolling component rolling the workpiece surface, the pressure spring provides elastic force, and the downward pressure of the static shoulder on the workpiece surface and the elastic force of the pressure spring are relative reaction forces, thereby ensuring that the materials on the welding forward side and the side of the static shoulder are kept flush;

[0015] As welding progresses, the shape changes of the material around the static shoulder are visually inspected. When it is found that the material at a certain position has a skin scraping bulge and the side rolling component is not at this position, the driving force is provided by the mobile drive mechanism to adjust the position of the side rolling component. When it can be accurately moved to the skin scraping bulge position, the position of the side rolling component is directly adjusted to the skin scraping bulge position. When it cannot be accurately moved to the skin scraping bulge position, the position of the side rolling component is adjusted to be as close to the skin scraping bulge position as possible, so as to roll the skin scraping bulge position or the nearby area to ensure that the material is flat.

[0016] Furthermore, when adjusting the position of the side rolling component when the skin scraping bulge occurs, since the position points and probabilities of the skin scraping bulge occurring on both sides of the static shoulder are roughly the same, the two side rolling components are kept adjusted synchronously so that the positions of the two side rolling components are synchronously adjusted to positions symmetrical with respect to the static shoulder, and the side where the skin scraping bulge occurs is rolled by the side rolling component, and the side where the skin scraping bulge does not occur is prevented by rolling by another symmetrical side rolling component.

[0017] Beneficial effect: The present invention arranges an elastic downward pressure rolling structure around the static shoulder to roll the workpiece surface, so that the material in the forward direction and side positions of the static shoulder remains flat, avoiding the occurrence of scraping, plowing and other situations that cause welding to be formed. In addition, the rolling components are distributed around the static shoulder to achieve a large-scale surrounding rolling of the workpiece surface, further avoiding the scraping and bulging phenomenon of the material, and ensuring the quality and efficiency of the workpiece welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Attached Figure 2 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0020] Attached Figure 3The overall structure of the present invention is shown in FIG. Figure 2 ;

[0021] Attached Figure 4 It is a bottom view structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 And attached Figure 4 As shown, a static shoulder rolling welding device includes a static shoulder 1 and a rolling component 2. The static shoulder 1 drives the rolling component 2 to roll the surface of the workpiece during the movement along the welding forward direction. The rolling component 2 is distributed on the peripheral side of the static shoulder 1. The rolling component 2 rolls the workpiece surface on the peripheral side of the static shoulder 1 during the following movement. The welding head 3 of the rolling component 2 relative to the static shoulder 1 is elastically connected through the elastic component 4. The downward pressure of the static shoulder 1 on the workpiece surface and the elastic force of the elastic component 4 are relative reaction forces. The present invention arranges a structural design of elastic downward pressure rolling on the workpiece surface around the static shoulder 1, so that the material in the forward direction and side position of the static shoulder 1 is kept flat, avoiding the occurrence of scraping, plowing and other situations that cause welding to be unformed. Moreover, the rolling component 2 is distributed around the static shoulder 1 to achieve a large-scale surrounding rolling of the workpiece surface, further avoiding the phenomenon of scraping skin and bulging of the material, and ensuring the welding quality and efficiency of the workpiece.

[0024] As attached Figure 2 and attached Figure 3As shown, the rolling component 2 includes a front rolling component 21 and a pair of side rolling components 22; the front rolling component 21 is located at the front end of the forward direction of the static shoulder 1, and the surface of the workpiece in front of the forward direction of the static shoulder 1 is rolled by the front rolling component 21 in the follow-up state; the pair of side rolling components 22 are symmetrically distributed on both sides of the static shoulder 1, and the surface of the workpiece on both sides of the static shoulder 1 is rolled by the side rolling components 22 in the follow-up state; the front rolling component 21 and the pair of side rolling components 22 are distributed in an isosceles triangle structure relative to the static shoulder 1. The present invention includes a rolling component frame 5 corresponding to the rolling component 2, and the rolling component frame 5 includes a front rolling component frame 51 and a side rolling component frame 52; the front rolling component 21 is mounted on the front rolling component frame 51 in a corresponding rolling fit, and the side rolling component 22 is mounted on the side rolling component frame 52 in a corresponding rolling fit, and a moving drive mechanism 6 is connected between the side rolling component frame 52 and the front rolling component frame 51, and the side rolling component frame 52 is driven by the moving drive mechanism 6 to drive the side rolling component 22 to move closer to or away from the front rolling component 21 in the welding forward direction, so as to adjust the distance between the side rolling component 22 and the front rolling component 21 in the welding forward direction, and change the rolling position point of the workpiece surface on the side of the static shoulder 1 rolled by the corresponding side rolling component 22. In the present invention, the rolling component 2 is a pressure wheel set on the rolling component frame 5 through an axle. It is worth noting that when adjusting the position of the side rolling component 22 when the skin scraping bulge occurs, since the position points and probabilities of the skin scraping bulge occurring on both sides of the static shoulder 1 are roughly the same, the two side rolling components 22 are kept adjusted synchronously, so that the two side rolling components 22 are synchronously adjusted to positions symmetrical about the static shoulder 1, and the side where the skin scraping bulge occurs is rolled by the side rolling component 22, and the side where the skin scraping bulge does not occur is prevented by rolling by another symmetrical side rolling component 22, thereby achieving the coordination of rolling the skin scraping bulge area and preventing the skin scraping bulge area that is prone to occur.

[0025] In order to ensure the synchronization of the position adjustment of the two side rolling components 22 and maintain a coaxial relationship symmetrical about the static shoulder 1 when reaching the target position, a deformable pressure detection device 11 is respectively connected between the two side rolling component frames 52 and the front rolling component frame 51. When the rolling position point of the side rolling component 22 is adjusted by providing driving force through the mobile driving mechanism 6, the side rolling component frame 52 is moved relative to the front rolling component frame 51. The deformable pressure detection device 11 performs pressure detection. The deformable pressure detection device 11 is preferably a pressure sensor spring. When the side rolling component 22 adjusts its position, pressure detection is performed through the deformable pressure detection device 11 to keep the two pressure detection values ​​the same when reaching the target position, thereby improving the accuracy and consistency of the position adjustment.

[0026] Since the position adjustment of the side rolling component 22 should not be at the rear side of the static shoulder 1, and should not exceed the front rolling component 21, otherwise the rolling effect will be greatly reduced, the position adjustment requirements of the side rolling component 22 of the present invention are as follows: Figure 4 As shown, when the pair of side rolling components 22 are located on the opposite side of the static shoulder 1, the central axis of the side rolling component 22 passes through the center of the static shoulder 1 to form a center line a, the central axis of the front rolling component 21 is b, and the adjustment position range of the side rolling component 22 is between the center line a and the center axis b, including the center line a position and excluding the center axis b position.

[0027] The present invention includes a rolling component bracket 7, which is limitedly installed on the welding head 3 by a lock nut 8; a telescopic rod 9 is connected between the rolling component frame 5 and the rolling component bracket 7, and the elastic component 4 is a pressure spring sleeved on the telescopic rod 9, and the pressure spring is elastically arranged between the rolling component bracket 7 and the front rolling component frame 51. A guide rail 10 is arranged in the gap between the side rolling component frame 52 and the front rolling component frame 51, and the guide rail 10 is installed on the side of the front rolling component frame 51. When the side rolling component 22 is driven by the moving drive mechanism 6 to move and adjust the position, it is guided by the guide rail 10.

[0028] The mobile driving mechanism 6 includes a driving screw 61 and a driving part 62 connected to the driving screw 61. The driving screw 61, which is rotationally connected to the front rolling component frame 51, is threadedly connected to the side rolling component frame 52. The driving part 62 can be manually driven, such as a hand-tightened handle, or electrically driven, such as a servo motor.

[0029] A rolling welding method of a static shoulder rolling welding device, during the welding process, the welding head 3 moves along the weld, the stirring shaft of the welding head 3 rotates to weld the weld, and during the forward movement of the welding head 3, the rolling component 2 is driven to roll the surface of the workpiece, wherein: the front rolling component 21 rolls the workpiece surface in front of the forward direction of the static shoulder 1, and the side rolling component 22 rolls the workpiece surface on both sides of the static shoulder 1, thereby forming an enveloping covering rolling of the workpiece surface around the static shoulder 1, so that the material in the forward direction and side position of the static shoulder 1 remains flat;

[0030] During the rolling process of the rolling component 2 rolling the workpiece surface, the pressure spring provides elastic force, and the downward pressure of the static shoulder 1 on the workpiece surface and the elastic force of the pressure spring are relative reaction forces, wherein the downward pressure of the static shoulder 1 is maintained at 400-600KG, and the corresponding elastic force of the pressure spring is at 400-500N, thereby ensuring that the materials on the welding forward side and the side of the static shoulder 3 are kept flush;

[0031] As welding progresses, the shape changes of the material around the static shoulder 1 are visually inspected. When it is found that the material at a certain position has a skin scraping bulge and the side rolling component 22 is not at this position, the driving force is provided by the mobile driving mechanism 6 to adjust the position of the side rolling component 22. When it can be accurately moved to the skin scraping bulge position, the position of the side rolling component 22 is directly adjusted to the skin scraping bulge position. When it cannot be accurately moved to the skin scraping bulge position, the position of the side rolling component 22 is adjusted as close to the skin scraping bulge position as possible, thereby rolling the skin scraping bulge position or the nearby area to ensure that the material is flat.

[0032] When adjusting the position of the side rolling component 22 when the skin scraping bulge occurs, since the position points and probabilities of the skin scraping bulge occurring on both sides of the static shoulder 1 are roughly the same, the two side rolling components 22 are kept synchronously adjusted so that the positions of the two side rolling components 22 are synchronously adjusted to positions symmetrical with respect to the static shoulder 1, and the side where the skin scraping bulge occurs is rolled by the side rolling component 22, and the side where the skin scraping bulge does not occur is prevented by rolling by the other symmetrical side rolling component 22.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A static shoulder rolling welding device, comprising a static shoulder (1) and a rolling component (2), wherein the static shoulder (1) drives the rolling component (2) to follow-roll the surface of a workpiece during movement along the welding forward direction; Features: The rolling component (2) is distributed around the static shoulder (1), and the rolling component (2) rolls the workpiece surface around the static shoulder (1) during the following movement; the welding head (3) of the rolling component (2) relative to the static shoulder (1) is elastically connected through the elastic component (4), and the downward pressure of the static shoulder (1) on the workpiece surface and the elastic force of the elastic component (4) are relative reaction forces; The rolling component (2) comprises a front rolling component (21) and a pair of side rolling components (22); the front rolling component (21) is located at the front end of the static shoulder (1) in the forward direction, and the surface of the workpiece in front of the static shoulder (1) in the forward direction is rolled by the front rolling component (21) in the follower state; the pair of side rolling components (22) are symmetrically distributed on both sides of the static shoulder (1), and the surfaces of the workpiece on both sides of the static shoulder (1) are rolled by the side rolling components (22) in the follower state; the front rolling component (21) and the pair of side rolling components (22) are distributed in an isosceles triangle structure relative to the static shoulder (1); The invention comprises a rolling component frame (5) corresponding to the rolling component (2), wherein the rolling component frame (5) comprises a front rolling component frame (51) and a side rolling component frame (52); the front rolling component (21) is mounted on the front rolling component frame (51) in a rolling manner, and the side rolling component (22) is mounted on the side rolling component frame (52) in a rolling manner; a moving drive mechanism (6) is connected between the side rolling component frame (52) and the front rolling component frame (51); the side rolling component frame (52) is driven by the moving drive mechanism (6) to drive the side rolling component frame (52) to move closer to or away from the front rolling component (21) in the welding forward direction, so as to adjust the distance between the side rolling component (22) and the front rolling component (21) in the welding forward direction, thereby changing the rolling position point of the workpiece surface on the side of the static shoulder (1) rolled by the corresponding side rolling component (22).

2. A static shoulder rolling welding device according to claim 1, characterized in that: When the pair of side rolling components (22) are located on the opposite side of the static shoulder (1), the central axis of the side rolling component (22) passes through the center of the static shoulder (1) to form a central line a, the central axis of the front rolling component (21) is b, and the adjustment position range of the side rolling component (22) is between the central line a and the central axis b, and includes the position of the central line a and does not include the position of the central axis b.

3. A static shoulder rolling welding device according to claim 2, characterized in that: The invention comprises a rolling component support (7), wherein the rolling component support (7) is installed on the welding head (3) by means of a locking nut (8); a telescopic rod (9) is connected between the rolling component frame (5) and the rolling component support (7); the elastic component (4) is a pressure spring sleeved on the telescopic rod (9), and the pressure spring is elastically arranged between the rolling component support (7) and the front rolling component frame (51).

4. A static shoulder rolling welding device according to claim 3, characterized in that: A guide rail (10) is provided in the gap between the side rolling component frame (52) and the front rolling component frame (51); the guide rail (10) is installed on the side of the front rolling component frame (51); and the side rolling component (22) is guided by the guide rail (10) when it is driven by the moving drive mechanism (6) to move and adjust its position.

5. A static shoulder rolling welding device according to claim 4, characterized in that: A deformable pressure detection device (11) is respectively connected between the two side rolling component frames (52) and the front rolling component frame (51); when the rolling position point of the side rolling component (22) is adjusted by providing a driving force through a mobile driving mechanism (6), pressure detection is performed through the deformable pressure detection device (11) during the movement of the side rolling component frame (52) relative to the front rolling component frame (51).

6. A static shoulder rolling welding device according to claim 5, characterized in that: The moving drive mechanism (6) comprises a driving screw (61) and a driving part (62) connected to the driving screw (61); the driving screw (61) rotatably connected to the front rolling component frame (51) is threadedly connected to the side rolling component frame (52).

7. The rolling welding method of the static shoulder rolling welding device according to claim 6, characterized in that: During the welding process, the welding head (3) moves along the weld seam, and the stirring shaft of the welding head (3) rotates to weld the weld seam. During the forward movement of the welding head (3), the rolling component (2) is driven to roll the surface of the workpiece, wherein: the front rolling component (21) rolls the workpiece surface in front of the forward direction of the static shoulder (1), and the side rolling component (22) rolls the workpiece surface on both sides of the static shoulder (1), thereby forming an enveloping covering rolling of the workpiece surface around the static shoulder (1), so that the material in the forward direction and side position of the static shoulder (1) remains flat; During the process of rolling the workpiece surface by the rolling component (2), the pressure spring provides elastic force, and the downward pressure of the static shoulder (1) on the workpiece surface and the elastic force of the pressure spring serve as relative reaction forces, thereby ensuring that the materials on the welding forward side and the side of the static shoulder (1) are kept flush; As welding progresses, the shape change of the material around the static shoulder (1) is visually detected. When it is found that the material at a certain position has a scraped skin bulge and the side rolling component (22) is not at this position, the position of the side rolling component (22) is adjusted by providing a driving force through the mobile drive mechanism (6). When it can be accurately moved to the scraped skin bulge position, the position of the side rolling component (22) is directly adjusted to the scraped skin bulge position. When it cannot be accurately moved to the scraped skin bulge position, the position of the side rolling component (22) is adjusted as close to the scraped skin bulge position as possible, thereby rolling the scraped skin bulge position or the surrounding area to ensure that the material is flat.

8. The rolling welding method of the static shoulder rolling welding device according to claim 7, characterized in that: When adjusting the position of the side rolling component (22) when a shovel bulge occurs, since the position points and probabilities of the shovel bulge occurring on both sides of the static shoulder (1) are roughly the same, the two side rolling components (22) are adjusted synchronously, so that the two side rolling components (22) are synchronously adjusted to positions symmetrical with respect to the static shoulder (1), and the side where the shovel bulge occurs is rolled by the side rolling component (22), and the side where the shovel bulge does not occur is rolled by another symmetrical side rolling component (22) to prevent it.

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