Laser automatic welding device for aluminum-silicon plated sheet

Abstract

The application provides an aluminum-silicon plated sheet laser automatic welding device, and belongs to the technical field of laser welding. The device comprises a welding station and a coating removing station. At least two sets of clamping mechanisms are arranged between the welding station and the coating removing station. The clamping mechanisms comprise a main beam clamping unit and an energy absorption box clamping unit. The main beam clamping unit and the energy absorption box clamping unit are aligned with each other and can be relatively fed. After the main beam and the energy absorption box are clamped, they are in an aligned state. After coating removal treatment, the main beam and the energy absorption box can be quickly and accurately spliced together by direct feeding, effectively improving the overall production and processing efficiency and quality. During clamping, the transverse limiting piece limits the main beam based on the energy absorption box and moves away from the main beam during splicing. The relative position accuracy of the energy absorption box and the main beam during repeated processing is effectively ensured, and sufficient processing space is provided for welding processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding, in particular to an aluminum-silicon plated sheet laser automatic welding device. BACKGROUND

[0002] The aluminum-silicon plated sheet for vehicles is a high-strength steel sheet specially designed for the light weight and safety of vehicles. By coating a layer of aluminum-silicon alloy on the surface of the steel and combining with the hot stamping process, a high-strength vehicle body structure (such as A / B column, anti-collision beam, door sill, etc.) is finally made. Some vehicle body components need to be laser welded to complete the production during the production process. For example, some anti-collision beam components, the main beam and the energy absorption box are fixedly connected together through welding technology.

[0003] In order to effectively avoid the adverse effects of aluminum-silicon plating on the welding quality of the anti-collision beam, the welding area is usually treated before welding. At present, the welding system or the welding station and the coating removal station are set up independently, and the welding treatment and the coating removal treatment are carried out synchronously to improve the production and processing efficiency. However, in the actual processing process, the main beam and the energy absorption box after coating removal treatment enter the welding station and need to be clamped, positioned and spliced again. On the one hand, the production and processing efficiency is inhibited, and on the other hand, the welding quality is easily affected by the coating removal precision and the splicing precision (the coating removal area needs to be accurately positioned, and the coating removal area needs to be aligned during splicing, otherwise the welding quality may be reduced or the welding quality may be reduced), and the distance between the energy absorption box and the end of the main beam in some anti-collision beams is small. During the clamping and splicing process, it is difficult to accurately and conveniently position the main beam and the energy absorption box on the basis of reserving sufficient welding space, thereby easily reducing the convenience of splicing and the quality of welding. Or only the welding station is set up, and the coating removal treatment is carried out on the welding station before welding processing, but the processing efficiency is low. SUMMARY

[0004] The application provides an aluminum-silicon plated sheet laser automatic welding device, which comprises a welding station and a coating removing station, at least two groups of clamping mechanisms are movably arranged between the welding station and the coating removing station, the clamping mechanisms comprise a main beam clamping unit and an energy absorption box clamping unit; the main beam clamping unit comprises: a transverse limiting piece which is transversely and elastically arranged, the transverse limiting piece is symmetrically arranged and transversely limits the end of the main beam; a bearing seat which is symmetrically provided with a longitudinal clamping head, the longitudinal clamping head is centrally clamped behind the transverse limiting piece of the main beam; and a vertical abutting head which is vertically abuttingly fixed to the main beam after the central clamping of the main beam; the energy absorption box clamping unit comprises: a lifting seat which is provided with a bearing area and corresponds to the energy absorption box one by one; a central clamping device which is installed on the lifting seat and is used for fixing the energy absorption box to a preset position aligned with the main beam; and a limiting head which is installed on the lifting seat based on the preset position of the energy absorption box, wherein, during the clamping process, the limiting head at least limits the transverse movement of the transverse limiting piece; during the splicing process, the lifting seat controls the energy absorption box to translate to the main beam until the energy absorption box abuts against the main beam, the limiting head removes the limitation of the transverse limiting piece by moving with the lifting seat, and the transverse limiting piece moves away from the main beam under the action of the elastic force.

[0005] In a possible implementation, a rotating loading platform is arranged between the welding station and the coating removing station, the clamping mechanisms are uniformly distributed along the rotating path and are installed on the rotating loading platform, and the main beam clamping unit further comprises a longitudinal abutting head which automatically abuts against the longitudinal clamping head during the process that the vertical abutting head presses the main beam, wherein the longitudinal abutting head is wedge-shaped matched with the longitudinal clamping head.

[0006] In a possible implementation, the bearing seat comprises a fixed part and a bearing part, and the bearing part is longitudinally and slidably installed on the fixed part and is used for bearing and placing the main beam.

[0007] In a possible implementation, the limiting head comprises a limiting frame which is provided with a limiting area and a constraint guide area, a limiting column is rotatably arranged on the transverse limiting piece, the limiting column moves along the constraint guide area to the limiting area to realize the transverse limitation in the limiting frame.

[0008] In a possible implementation, the central clamping device comprises a first clamping head which is transversely and symmetrically distributed and synchronously and reversely moved, a second clamping head which is longitudinally and symmetrically distributed and synchronously and reversely moved, and an adaptive side pushing head which is elastically hinged on the first clamping head and the second clamping head and first contacts the energy absorption box during the clamping process and then moves along the side wall of the energy absorption box to the bearing area.

[0009] In a possible implementation, the vertical abutting head comprises a translation frame which is provided with a plurality of pressing blocks, the pressing blocks are distributed along the corresponding abutting surfaces of the main beam and are conformally matched with the abutting surfaces of the main beam.

[0010] In one possible implementation, during clamping, the limiting head limits the transverse limiting member after the main beam is placed on the receiving seat, so that the transverse limiting member limits the main beam from the end of the main beam.

[0011] The one or more technical solutions in the embodiments of the present application have at least one of the following technical effects: the aluminum-silicon plated plate laser automatic welding device provided by the embodiments of the present application is provided with the main beam clamping unit and the energy absorption box clamping unit which are aligned with each other and can be relatively fed on the basis of synchronous coating and welding processing, so that the main beam and the energy absorption box after clamping are in an aligned state, and after coating treatment, the main beam and the energy absorption box can be quickly and accurately spliced together by directly feeding, thereby effectively improving the production and processing efficiency and quality, and in the clamping process, the transverse limiting member limits the main beam based on the energy absorption box, thereby improving the relative position accuracy of the main beam and the energy absorption box and moving away from the main beam in the splicing process, which effectively ensures the relative position accuracy of the main beam and the energy absorption box in the repeated processing process, and provides sufficient processing space in the welding processing process, thereby effectively improving the batch processing efficiency, quality and convenience. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of an aluminum-silicon plated plate laser automatic welding device provided by the embodiments of the present application.

[0013] Figure 2 is a schematic diagram of the structure of a front view of an aluminum-silicon plated plate laser automatic welding device provided by the embodiments of the present application.

[0014] Figure 3 is a schematic diagram of the structure of a limiting area and a constraint guide area of an aluminum-silicon plated plate laser automatic welding device provided by the embodiments of the present application.

[0015] Figure 4 is a schematic diagram of the structure of a first clamping head and a self-adaptive side pushing head of an aluminum-silicon plated plate laser automatic welding device provided by the embodiments of the present application.

[0016] Figure 5 is a schematic diagram of the structure of a longitudinal clamping head and a vertical abutting head of an aluminum-silicon plated plate laser automatic welding device provided by the embodiments of the present application.

[0017] In the figure: 1, loading platform; 2, main beam clamping unit; 21, transverse limiting piece; 22, longitudinal clamping head; 23, receiving seat; 231, fixed part; 232, receiving part; 24, vertical abutting head; 241, translation frame; 242, pressing block; 25, longitudinal abutting head; 3, energy absorption box clamping unit; 31, receiving area; 32, lifting seat; 33, centering clamp; 331, first clamping head; 332, second clamping head; 333, self-adapting side pushing head; 34, limiting head; 341, limiting area; 342, constraint guide area; 343, limiting frame; 35, limiting column; 36, annular limiting groove; 4, mounting frame; 5, elastic member. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific details set forth below, and it is understood that similar improvements can be made by those skilled in the art without departing from the spirit and scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0019] Please refer to Figure 1 and Figure 2 An aluminum-silicon plated sheet laser automatic welding device, comprising a welding station and a coating removal station, a rotating loading platform 1 is arranged between the welding station and the coating removal station, two sets of clamping mechanisms are installed on the rotating loading platform 1, the clamping mechanisms are used for clamping a main beam and an energy absorption box, such as Figure 1As shown, during the welding process, the rotating loading platform 1 is in a horizontal fixed position state, the clamping mechanisms are located above and below the rotating loading platform 1 respectively, and the area where the clamping mechanism above is located is a welding station, and the area where the clamping mechanism below is located is a coating removal station. An automatic welding device (such as a mechanical hand combined with a laser welding gun, not shown in the figure) is arranged in the welding station, and an automatic coating removal device (such as a mechanical hand combined with a laser coating removal device, not shown in the figure) is arranged in the coating removal station. The clamping mechanism includes a main beam clamping unit 2 and an energy absorption box clamping unit 3. In the coating removal station, the energy absorption box clamped by the energy absorption box clamping unit 3 and the main beam clamped by the main beam clamping unit 2 are in a separated and aligned state, and the separated energy absorption box and main beam facilitate full coating removal treatment of the coating removal station, and the alignment facilitates accurate and efficient coating removal work of the automatic coating removal device. In the welding station, the energy absorption box clamped by the energy absorption box clamping unit 3 and the main beam clamped by the main beam clamping unit 2 are in an abutting and splicing state, and the change of the position state of the two only needs to translate the energy absorption box clamping unit 3 to the main beam clamping unit 2 to complete, which facilitates quick and accurate splicing of the energy absorption box and the main beam. The entire production and processing process adopts a double-station synchronous processing mode, simultaneously performs coating removal and welding processing, and only needs to be clamped and positioned once during the entire production and processing process, effectively improving the overall production and processing efficiency. Among them, after the welding station completes welding, the finished product is removed, and at the same time, the coating removal station also completes the coating removal treatment. Then, the rotating loading platform 1 rotates 180 degrees, switches the positions of the upper and lower clamping mechanisms, and then the energy absorption box clamping unit 3 in the welding station translates to the main beam clamping unit 2 to complete the splicing of the energy absorption box and the main beam, and then the welding process is performed. In the coating removal station, the main beam and the energy absorption box are clamped and fixed first, and then the coating removal process is performed, and then the foregoing process is repeated to continuously produce and process.

[0020] Referring to Figure 1 and Figure 2, two groups of mounting racks 4 are fixedly installed on the rotary loading platform 1, each group of mounting racks 4 is two in number and symmetrically distributed left and right, the main beam clamping unit 2 comprises a transverse limiting piece 21, a longitudinal clamping head 22, a receiving seat 23 and a vertical abutting head 24, the transverse limiting pieces 21 are symmetrically distributed left and right and are slidingly installed on the corresponding mounting racks 4, the longitudinal clamping heads 22 are symmetrically distributed front and back and are slidingly installed on the receiving seat 23 in the front and back directions, the symmetrical longitudinal clamping heads 22 are synchronously moved in reverse, the receiving seat 23 is fixedly installed on the rotary loading platform 1, the vertical abutting head 24 is slidingly installed on the rotary loading platform 1 in the vertical direction, and the receiving seat 23 is located below the vertical abutting head 24 except in the coating station, in the clamping process, the main beam is first placed on the receiving seat 23, then the transverse limiting piece 21 moves to the main beam to limit the main beam from both ends, thereby limiting the transverse position of the main beam, then the longitudinal clamping head 22 is synchronously moved to centrally clamp and fix the main beam, thereby limiting the longitudinal position of the main beam, and finally the vertical abutting head 24 is moved downward to abut against the main beam to complete the clamping of the main beam, so that the main beam is stably located at the current position.

[0021] Referring to Figure 1 , Figure 2 and Figure 3 , the transverse limiting piece 21 and the mounting rack 4 are provided with an elastic piece 5, the energy-absorbing box clamping unit 3 comprises a lifting seat 32 provided with a receiving area 31, a central clamping device 33 and a limiting head 34, the lifting seat 32 corresponds to the energy-absorbing box one by one and is installed on the corresponding mounting rack 4, the central clamping device 33 is installed on the lifting seat 32 and is used for fixing the energy-absorbing box to a preset position aligned with the main beam, the limiting head 34 is fixedly installed on the lifting seat 32 with the preset position of the energy-absorbing box as a reference, and in the clamping process, the limiting head 34 limits the transverse limiting piece 21 (at this time, the elastic piece 5 is in an energy storage state) so that the transverse limiting piece 21 takes the transverse coordinate of the preset position of the energy-absorbing box as a reference to position the main beam in the transverse direction, thereby improving the alignment accuracy of the main beam and the energy-absorbing box, and in the splicing process, with the movement of the lifting seat 32, the limiting head 34 releases the limitation on the transverse limiting piece 21, the elastic piece 5 releases energy to make the transverse limiting piece 21 move away from the main beam, thereby fully exposing the welding position of the main beam and the energy-absorbing box after splicing, providing sufficient processing space for welding processing, and facilitating smooth welding processing.

[0022] Referring to Figure 2 and Figure 3 , the limiting head 34 comprises a limiting frame 343 provided with a limiting area 341 and a constraint guide area 342, a limiting column 35 is rotationally arranged on the transverse limiting piece 21, the limiting column 35 moves in the limiting frame 343 and along the constraint guide area 342 to the limiting area 341 to realize transverse limiting, and Figure 2As shown, the limiting frame 343 moves with the lifting seat 32, in the initial state, the limiting column 35 is located in the constraint guide area 342, at this time, the transverse limiting piece 21 is in a position state away from the receiving seat 23 in the transverse direction, after the main beam is placed on the receiving seat 23, the lifting seat 32 controls the limiting frame 343 to move downward, and the limiting column 35 smoothly enters the limiting area 341 from the constraint guide area 342 under the limiting of the limiting frame 343, and correspondingly moves the transverse limiting piece 21 to the direction of the receiving seat 23, until the main beam is limited from both ends, so that the main beam maintains an accurate relative position relationship with the energy absorption box in the transverse direction, and in the process of splicing at the welding station, the lifting seat 32 drives the energy absorption box to move towards the main beam, the limiting frame 343 moves towards the main beam (i.e. moves downward) with the lifting seat 32, the limiting frame 343 gradually separates from the limiting column 35 to release the limiting, and the transverse limiting piece 21 reversely resets and moves under the action of the elastic piece 5, and the limiting column 35 enters the constraint guide area 342. The limiting column 35 is symmetrically distributed on the transverse limiting piece 21 and the annular limiting groove 36 is formed on the limiting column 35, the limiting frame 343 is integrally formed by bending a circular rod structure, the annular limiting groove 36 is clamped on the limiting frame 343 and moves along the limiting frame 343, and the transverse limiting piece 21 is limited in the longitudinal direction, thereby improving the stability of the position state of the transverse limiting piece 21 and the stability of the limiting of the main beam.

[0023] Referring to Figure 1 and Figure 5 , in order to further improve the stability and precision of the entire processing process, the vertical abutting head 24 is fixedly provided with a longitudinal abutting head 25, the longitudinal abutting head 25 is symmetrically distributed in front and back and corresponds to the longitudinal clamping head 22 one by one, as shown in Figure 5 , the longitudinal abutting head 25 is wedge-shaped with the longitudinal clamping head 22, in the process of moving and pressing the main beam, the longitudinal abutting head 25 is wedge-shaped with the corresponding longitudinal clamping head 22, and abuts the longitudinal clamping head 22 from the front and back sides respectively, so as to ensure the stability of the clamping state of the longitudinal clamping head 22, and make the main beam maintain a stable clamping state in the process of rotating on the rotating loading platform 1, after the welding is completed, the vertical abutting head 24 needs to reset and move, so that the longitudinal abutting head 25 is separated from the longitudinal clamping head 22, then the longitudinal clamping head 22 releases the main beam, and the finished product after welding will automatically fall on the vertical abutting head 24 under the action of gravity, and then it can be taken away. The vertical abutting head 24 includes a translation frame 241, the translation frame 241 is slidingly installed on the rotating loading platform 1, and a plurality of pressing blocks 242 are arranged on the translation frame 241, the pressing blocks 242 are distributed along the corresponding abutting surface of the main beam and are conformally attached to the abutting surface of the main beam, thereby improving the accuracy and stability of the position state of the main beam after clamping.

[0024] Referring to Figure 1 , Figure 2 andFigure 4 The centering clamp 33 includes a first clamping head 331, a second clamping head 332, and an adaptive side push head 333. The first clamping head 331 is symmetrically distributed left and right and synchronously moves in opposite directions on the lifting base 32. The second clamping head 332 is symmetrically distributed front and back and synchronously moves in opposite directions on the lifting base 32. The adaptive side push head 333 is elastically hinged to the first clamping head 331 and the second clamping head 332. During the clamping process, it first contacts the energy-absorbing box, and then moves along the side wall of the energy-absorbing box towards the receiving area 31, applying a lateral thrust to the energy-absorbing box. This ensures that the energy-absorbing box is stably placed on the receiving area 31, preventing abnormal force caused by the energy-absorbing box moving due to position correction during the clamping and fixing process, thus avoiding gaps between the energy-absorbing box and the receiving area 31. This ensures the stability and accuracy of the position of the energy-absorbing box after clamping and fixing. Figure 4 As shown, the adaptive side push head 333 is a connecting rod with a cylindrical contact head fixedly connected to it. The connecting rod is inclinedly hinged to the first clamping head 331 and the second clamping head 332 and is connected to the first clamping head 331 and the second clamping head 332 by a spiral spring. During the process of the first clamping head 331 and the second clamping head 332 moving towards the energy absorption box, the contact head first contacts the energy absorption box and moves along the side wall of the energy absorption box as the first clamping head 331 and the second clamping head 332 move, applying a lateral thrust to the energy absorption box, so that the energy absorption box is stably placed on the receiving area 31.

[0025] See Figure 1 and Figure 5 The receiving seat 23 includes a fixed part 231 and a receiving part 232. The longitudinal clamping heads 22 are slidably mounted on the fixed part 231. The receiving part 232 is located between the symmetrical longitudinal clamping heads 22 and is also slidably mounted on the fixed part 231. The receiving part 232 is used to receive and place the main beam, such as... Figure 5 As shown, the main beam is placed on the receiving part 232. During the process of symmetrical longitudinal clamping heads 22 moving synchronously towards the main beam for centering and clamping, the position of the main beam will be automatically adjusted to ensure that the main beam is accurately centered. During the adjustment process, the receiving part 232 will move with the main beam, effectively avoiding frictional wear caused by relative movement between the main beam and the receiving part 232 during the position adjustment process, and improving the convenience of the automatic adjustment process.

[0026] In the embodiments of the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0027] In the description of the present application, it should also be noted that, unless specifically defined and limited otherwise, the terms "provided", "connected", "mounted", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, or slidingly connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The embodiments of the specific implementation are the preferred embodiments of the present application, not limited to the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automated laser welding device for aluminum-silicon coated plates, comprising a welding station and a coating removal station, characterized in that: At least two cyclically movable clamping mechanisms are provided between the welding station and the decoction station. The clamping mechanism includes a main beam clamping unit and an energy-absorbing box clamping unit. The main beam clamping unit includes: Lateral limiting components with lateral elastic sliding are symmetrically arranged and laterally limited from the end of the main beam; A receiving seat with symmetrically arranged longitudinal clamping heads clamps the main beam in the center after being laterally limited by the main beam. The vertical clamping head is used to clamp the main beam in the center and then vertically clamp and fix the main beam. The energy-absorbing box clamping unit includes: A lifting platform with a receiving area is provided, and the lifting platform corresponds one-to-one with the energy absorption box; A centering clamp is installed on the lifting seat and used to fix the energy-absorbing box to a preset position aligned with the main beam; The limit head is installed on the lifting base with the preset position of the energy absorption box as the reference. During the clamping process, the limiting head at least restricts the lateral movement of the lateral limiting component; during the splicing process, the lifting seat controls the energy-absorbing box to move towards the main beam until it abuts against the main beam. As the lifting seat moves, the limiting head releases the restriction on the lateral limiting component, and the lateral limiting component moves away from the main beam under the action of elastic force.

2. The automated laser welding device for aluminum-silicon coated plates according to claim 1, characterized in that: A rotating loading platform is provided between the welding station and the decoction station. The clamping mechanism is evenly distributed along its rotation path and installed on the rotating loading platform. The main beam clamping unit also includes a longitudinal clamping head, which automatically clamps the longitudinal clamping head during the process of the vertical clamping head pressing the main beam.

3. The automated laser welding device for aluminum-silicon coated plates according to claim 2, characterized in that: The longitudinal clamping head and the longitudinal clamping head are wedge-shaped.

4. The automated laser welding device for aluminum-silicon coated plates according to claim 1, characterized in that: The receiving seat includes a fixed part and a receiving part. The receiving part is longitudinally slidably installed on the fixed part and is used to receive and place the main beam.

5. The automated laser welding device for aluminum-silicon coated plates according to claim 1, characterized in that: The limiting head includes a limiting frame with a limiting area and a constraint guide area. A limiting post is rotatably provided on the lateral limiting member. The limiting post moves within the limiting frame and moves along the constraint guide area to the limiting area to achieve lateral limiting.

6. The automated laser welding device for aluminum-silicon coated plates according to claim 1, characterized in that: The centering gripper includes a first gripping head, which is symmetrically distributed laterally and moves synchronously in opposite directions, and a second gripping head, which is symmetrically distributed longitudinally and moves synchronously in opposite directions. Adaptive side push head: It is elastically hinged to the first clamping head and the second clamping head, and during the clamping process, it first contacts the energy absorption box, and then moves along the side wall of the energy absorption box towards the receiving area.

7. The automated laser welding device for aluminum-silicon coated plates according to claim 1, characterized in that: The vertical clamping head includes a translation frame with several pressure blocks on it. The pressure blocks are distributed along the corresponding abutment surfaces of the main beam and conform to the abutment surfaces of the main beam.

8. The automated laser welding device for aluminum-silicon coated plates according to any one of claims 1-7, characterized in that: During the clamping process, the limiting head limits the lateral limiting component after the main beam is placed on the receiving seat, so that it limits the main beam laterally from the end of the main beam.

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