An automobile spare part processing and welding device

Abstract

This invention relates to the field of automotive parts welding, and more particularly to an automotive parts processing and welding equipment. The equipment uses a first and a second electrically controlled clamping plate to hold long and short frame strips along the edges of a corrugated panel in various directions. Two long pressure plates, along with convex and concave pressure plates, press the convex and concave portions of the corrugated panel downwards. A multi-axis control mechanism controls the welding torch to directly perform full welding on the corrugated panel. Before welding, the area to be welded on the corrugated panel can be hot-pressed and straightened. This solves the problem in the welding of cargo box panels for freight trucks, where the previous method of spot welding followed by full welding not only increased labor costs but also caused localized cracking after welding.

Description

Technical Field

[0001] This invention relates to the field of automotive parts welding, and more particularly to an automotive parts processing and welding equipment. Background Technology

[0002] In the welding process of cargo box panels for freight trucks, corrugated panels, due to their weak edge structure rigidity, are prone to severe thermal deformation and warping when directly and continuously welded to the frame strips. This can lead to concentrated local high-temperature heat input, affecting assembly accuracy and overall flatness. Furthermore, when the corrugated panel itself has a local warped structure, the warped area cannot be effectively welded to the frame strip. To solve this problem, the process usually requires manual spot welding of the corrugated panel edge structure to the long and short frame strips to create a preliminary rigid constraint between the panel and the frame in space. This effectively limits the free displacement of the panel due to thermal expansion during the subsequent automated full welding process, suppressing overall warping deformation. However, this spot welding followed by full welding increases the manual intervention step, resulting in lower production efficiency and difficulty in ensuring the consistency of the quality of manual spot welding. Inappropriate spot welding position, sequence, or strength may introduce new stress concentration points. Moreover, the local constraint formed by spot welding can sometimes overlap with the thermal stress generated by subsequent full welding, potentially inducing more complex residual stress distributions in certain areas, or even leading to the generation of microcracks. Summary of the Invention

[0003] In order to overcome the shortcomings of the processing method of spot welding followed by full welding in the welding of cargo box panels of freight trucks, which not only increases the labor cost but also causes local cracks in the corrugated panels after welding, this invention provides a welding equipment for processing automotive parts.

[0004] This invention discloses a welding equipment for processing automotive parts, comprising a positioning machine tool, a first electrically controlled clamping plate, a second electrically controlled clamping plate, a fixed frame, an electrically controlled lifting mechanism, a lifting frame, a long pressure plate, a multi-axis control mechanism, and a welding torch. The positioning machine tool has a first electrically controlled clamping plate slidably connected to its front and rear sides for pushing long side frame strips to clamp corrugated panels. The positioning machine tool also has a second electrically controlled clamping plate slidably connected to its left and right sides for pushing short side frame strips to clamp corrugated panels. A fixed frame is fixedly connected to the positioning machine tool. An electrically controlled lifting mechanism is mounted on the fixed frame. The lifting mechanism's lifting component is fixedly connected to the lifting frame. Two long pressure plates, one at the front and one at the rear, are fixedly connected to the lifting frame to press the corrugated panels onto the positioning machine tool. A multi-axis control mechanism is mounted on the long pressure plate. A welding torch is mounted on the multi-axis control mechanism, and the welding torch is adjusted for welding position and angle via the multi-axis control mechanism.

[0005] More preferably, each of the two long pressure plates has a number of protruding pressure plates connected at equal intervals on its opposite sides.

[0006] More preferably, the convex pressure plate is slidably connected to the long pressure plate; the convex pressure plate has a wedge-shaped inclined surface structure; the multi-axis control mechanism is connected to a push block that is aligned with the wedge-shaped inclined surface structure on the convex pressure plate on the same side.

[0007] More preferably, each of the two long pressure plates is slidably connected to a stop bar on its opposite side; the long pressure plates are equipped with an electrically controlled telescopic rod that controls the forward and backward movement of the stop bars.

[0008] A more preferred approach is to use a number of recessed pressure plates fixed to the long pressure plate for pressing the recessed parts of the corrugated panel.

[0009] More preferably, a limiting plate is fixed to the bottom of the recessed pressure plate; the length distance between the front side of the front convex pressure plate and the rear side of the corresponding rear convex pressure plate is the same as the width distance in the front-to-back direction of the corrugated panel.

[0010] More preferably, the left-right width distance of the limiting plate is the same as the left-right width distance of the inner bottom structure of the corrugated panel recess.

[0011] By adopting the above solution, it is even more preferable that the positioning machine tool is provided with a number of raised strip structures that are adapted to the inner bottom structure of the corrugated panel protrusion.

[0012] More preferably, an electric heater is installed on the long pressure plate; the electric heater is equipped with a heating head for heating the limiting plate.

[0013] More preferably, the limiting plate uses a heat spreader material.

[0014] This invention discloses a welding equipment for automotive parts processing. A first and a second electrically controlled clamping plate clamp long and short frame strips to the edges of a corrugated panel in various directions. Two long pressure plates, along with a convex pressure plate and a concave pressure plate, press the protruding and recessed portions of the corrugated panel downwards. A multi-axis control mechanism controls the welding torch head to directly perform full welding on the corrugated panel. Before welding, the area of ​​the corrugated panel to be welded can be preheated. The convex and concave pressure plates flatten any warped areas of the corrugated panel and position them correctly. On the machine tool, hot pressing is used to straighten warped areas at the edges of corrugated panels, improving the edge warping phenomenon and reducing the cooling rate after welding, thus mitigating the risk of hydrogen-induced cracking around the weld. In summary, the automotive parts processing and welding equipment of the present invention solves the problem that the previous method of spot welding followed by full welding in the welding of cargo box panels of freight trucks not only increases labor costs but also causes local cracking in the corrugated panels after welding. This significantly improves the overall welding efficiency and welding effect of cargo box panels. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a diagram showing the placement of the corrugated panel, long frame strip, and short frame strip of the present invention on a positioning machine tool;

[0017] Figure 3 This is a three-dimensional structural diagram of the lifting frame of the present invention;

[0018] Figure 4 This is a three-dimensional structural diagram of the long pressure plate of the present invention;

[0019] Figure 5 This is a three-dimensional structural diagram of the protruding pressure plate of the present invention;

[0020] Figure 6 This is a three-dimensional structural diagram of the recessed pressure plate of the present invention.

[0021] The markings in the attached diagram are as follows: 1-Positioning machine tool, 101-Protruding strip structure, 11-First electrically controlled clamping plate, 12-Second electrically controlled clamping plate, 2-Fixed frame, 21-Electrically controlled lifting machine, 22-Lifting frame, 23-Long pressure plate, 24-Transverse electrically controlled slider, 25-Vertical electrically controlled slider, 26-Electrically controlled lifting platform, 27-Electrically controlled horizontal rotary table, 28-Electrically controlled axial rotary table, 29-Welding gun head, 31-Protruding pressure plate, 3101-Wedge-shaped inclined surface structure, 32-Push block, 33-Stop bar, 34-Electrically controlled telescopic rod, 41-Concave pressure plate, 42-Limiting plate, 43-Electric heater, 44-Heating head, 51-Corrugated panel, 52-Long side frame strip, 53-Short side frame strip. Detailed Implementation

[0022] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0023] Example 1: A welding equipment for processing automotive parts, as described in this example. Figures 1-6As shown, the system includes a positioning machine tool 1, a first electrically controlled clamping plate 11, a second electrically controlled clamping plate 12, a fixed frame 2, an electrically controlled lifting mechanism 21, a lifting frame 22, a long pressure plate 23, a transverse electrically controlled slider 24, a longitudinal electrically controlled slider 25, an electrically controlled lifting platform 26, an electrically controlled horizontal rotary table 27, an electrically controlled axial rotary table 28, and a welding torch head 29. Two first electrically controlled clamping plates 11 are slidably connected to the front and rear sides of the positioning machine tool 1; a second electrically controlled clamping plate 12 is slidably connected to the left and right sides of the positioning machine tool 1; a fixed frame 2 is fixedly connected to the positioning machine tool 1; two electrically controlled lifting mechanisms 21 are mounted on the fixed frame 2; the lifting components of the two electrically controlled lifting mechanisms 21 are connected together. A lifting frame 22 is connected; two long pressure plates 23 are fixedly connected to the lifting frame 22; each of the two long pressure plates 23 is equipped with a horizontal electrically controlled slider 24; the sliding parts of each of the two horizontal electrically controlled sliders 24 are slidably connected to a vertical electrically controlled slider 25; the sliding parts of each of the two vertical electrically controlled sliders 25 are equipped with an electrically controlled lifting platform 26; the lifting parts of each of the two electrically controlled lifting platforms 26 are equipped with an electrically controlled horizontal rotary platform 27; the rotating parts of each of the two electrically controlled horizontal rotary platforms 27 are equipped with an electrically controlled axial rotary platform 28; the rotating parts of each of the two electrically controlled axial rotary platforms 28 are equipped with a welding gun head 29, and the welding gun head 29 is externally connected to a laser welding host.

[0024] like Figures 3-6 As shown, several protruding pressure plates 31 are equidistantly slidably connected to the opposite sides of the two long pressure plates 23; each protruding pressure plate 31 has a wedge-shaped inclined surface structure 3101; each of the transverse electrically controlled sliders 24 of the two multi-axis control mechanisms is connected to a push block 32 that is aligned with the wedge-shaped inclined surface structure 3101 on the same side of the protruding pressure plate 31; each of the two long pressure plates 23 is slidably connected to a stop rod 33 on the opposite side, and the stop rod 33 is initially in close contact with all the protruding pressure plates 31 on the same side of the long pressure plate 23; each of the two long pressure plates 23 is equipped with two electrically controlled telescopic rods 34; the telescopic ends of the two electrically controlled telescopic rods 34 are respectively fixed to the corresponding stop rods 33.

[0025] In this embodiment of an automotive parts processing and welding equipment, the operator first places a corrugated panel 51 on a positioning machine tool 1, then places two long side frame strips 52 on the front and rear sides of the corrugated panel 51 on the positioning machine tool 1, and two short side frame strips 53 on the left and right sides of the corrugated panel 51 on the positioning machine tool 1. Then, the first electrically controlled clamping plates 11 on the front and rear sides push the long side frame strips 52 towards the corrugated panel 51, clamping the front and rear sides of the corrugated panel 51. Finally, the second electrically controlled clamping plates 11 on the left and right sides... 2. Push the short side frame strips 53 on the same side toward the corrugated panel 51 respectively, so that the two short side frame strips 53 clamp the left and right sides of the corrugated panel 51 respectively. At the same time, the electric lifting machine 21 drives the lifting frame 22 to press the long pressure plate 23 connected to it downwards onto the surface of the corrugated panel 51. At the same time, the long pressure plate 23 presses the protruding pressure plate 31 onto the protruding surface of the corrugated panel 51, so that the corrugated panel 51 is pressed on the positioning machine tool 1, so as to avoid the local area of ​​the edge structure of the corrugated panel 51 being squeezed and warped during the clamping process of the two long side frame strips 52.

[0026] After the lifting frame 22 presses the long pressure plate 23 and the protruding pressure plate 31 downwards onto the surface of the corrugated panel 51, the two welding gun heads 29 are respectively aligned with the connection areas of the front and rear side edge structures of the corrugated panel 51 and the corresponding long frame strips 52. The welding gun head 29 is moved laterally in the left and right direction by the horizontal electric control slider 24, moved longitudinally in the front and back direction by the vertical electric control slider 25, moved vertically in the up and down direction by the electric control lifting platform 26, and rotated around the axis of the gun barrel connection by the electric control axial rotary table 28 to adjust the welding angle. This realizes that the multi-axis control mechanism composed of the horizontal electric control slider 24, the vertical electric control slider 25, the electric control lifting platform 26, the electric control horizontal rotary table 27, and the electric control axial rotary table 28 jointly controls the welding gun head 29 to continuously perform full welding on the connection areas of the front and rear side edge structures of the corrugated panel 51 and the corresponding long frame strips 52.

[0027] When the horizontally controlled slider 24 drives the welding gun head 29 to move laterally along the connection area between the corrugated panel 51 edge structure and the corresponding long frame strip 52 for welding, the electrically controlled telescopic rod 34 pulls the stop rod 33 to move away from the protruding pressure plate 31. The protruding pressure plate 31 on the long pressure plate 23 is initially pressed against the edge structure surface of the corrugated panel 51 protrusion to prevent the edge structure of the corrugated panel 51 from warping upwards in a local area. When the horizontally controlled slider 24 passes a certain protruding pressure plate 31, the horizontally controlled slider 24 first drives the push block 32 to push the protruding pressure plate 31. The wedge-shaped inclined surface structure 3101 drives the protruding pressure plate 31 to move away from the edge structure of the corrugated panel 51. Then, the transverse electric control slider 24 drives the welding gun head 29, which moves in close succession, to weld at this position of the edge structure of the corrugated panel 51. The side of the edge structure of the corrugated panel 51 with a warped area remains flattened by the adjacent protruding pressure plate 31, while the other side of the edge structure of the corrugated panel 51 with a warped area is welded to the corresponding long frame strip 52 and is no longer warped, thus ensuring that the edge structure of the corrugated panel 51 does not warp.

[0028] After the welding work of the edge structure of the corrugated panel 51 to the two long side frame strips 52 is completed, the electrically controlled horizontal rotary table 27 drives the welding gun head 29 to rotate to the area where the edge structure of the corrugated panel 51 is connected to the short side frame strips 53. Through the two multi-axis control mechanisms, the welding gun heads 29 connected to them are respectively driven to weld the edge structure of the corrugated panel 51 to the two short side frame strips 53. This achieves the direct completion of the welding work of the edge structure of the corrugated panel 51 to the two long side frame strips 52 and the two short side frame strips 53. There is no need for the staff to perform spot welding first, and it can also ensure that the corrugated panel 51 will not warp.

[0029] Example 2, based on Example 1, such as Figures 1-6 As shown, in this embodiment of an automotive parts processing and welding equipment, a number of recessed pressure plates 41 aligned with the recesses of corrugated panels 51 are fixedly connected to a long pressure plate 23; each recessed pressure plate 41 has a limiting plate 42 fixedly connected to its bottom; the length distance between the front side of the front convex pressure plate 31 and the rear side of the corresponding rear convex pressure plate 31 is the same as the width distance in the front-rear direction of the corrugated panel 51; the width distance in the left-right direction of each limiting plate 42 is the same as the width distance in the left-right direction of the inner bottom structure of the recess of the corrugated panel 51.

[0030] In this embodiment of an automotive parts processing and welding equipment, when the corrugated panel 51 is placed on the positioning machine tool 1, the lifting frame 22 first drives the convex pressure plate 31 and concave pressure plate 41 on the long pressure plate 23 to abut against the convex and concave portions of the corrugated panel 51 respectively. At this time, the corrugated panel 51 is not pressed down by the long pressure plate 23. At the same time, the operator adjusts the placement position of the corrugated panel 51 so that the limiting plate 42 on the concave pressure plate 41 is locked down into the corresponding concave portion of the corrugated panel 51. At this time, the left and right directions of the corrugated panel 51 are restrained by the limiting plate 42. Then, the first electrically controlled clamping plates 11 on the front and rear sides are activated to push the long frame strip 52 toward the corrugated panel 51. The long frame strip 52 is moved by the front and rear first electrically controlled clamping plates 11. The corrugated panel 51 is aligned and adjusted until it is pressed between the two long frame strips 52. During the process of the first electronically controlled clamping plate 11 pushing the long frame strips 52 to squeeze the corrugated panel 51, the protruding pressure plate 31 is initially blocked by the stop bar 33 and will not be pushed by the long frame strips 52. When the long frame strips 52 are blocked by the protruding pressure plate 31 on the same side, the first electronically controlled clamping plate 11 can no longer push the long frame strips 52 to move, thus avoiding the first electronically controlled clamping plate 11 from continuing to push the long frame strips 52 to squeeze the edge structure of the corrugated panel 51 and causing irreparable creases. This ensures that the long frame strips 52 can be firmly attached to the edge structure of the corrugated panel 51, while preventing the edge structure of the corrugated panel 51 from being squeezed and damaged by the long frame strips 52.

[0031] Then, the lifting frame 22 can drive the long pressure plate 23 and its connected convex pressure plate 31 and concave pressure plate 41 to press the corrugated panel 51 downward onto the positioning machine tool 1. The second electric control clamping plates 12 on the left and right sides push the short side frame strips 53 on the same side toward the corrugated panel 51, so that the two short side frame strips 53 press against the left and right sides of the corrugated panel 51 respectively. When the short side frame strips 53 are blocked by the long side frame strips 52, they will stop moving to avoid the edge structure of the corrugated panel 51 being squeezed and damaged by the short side frame strips 53.

[0032] Example 3, based on Example 2, such as Figures 1-6 As shown, in this embodiment, an automotive parts processing and welding equipment includes a positioning machine tool 1 with several raised strip structures 101 adapted to the inner bottom structure of the corrugated panel 51; an electric heater 43 is installed on the long pressure plate 23; a heating head 44 is installed on the electric heater 43, which corresponds to the number and position of the limiting plates 42, and the heating head 44 is connected to the corresponding limiting plate 42; each limiting plate 42 is made of heat-spreading plate material.

[0033] In this embodiment of an automotive parts processing and welding equipment, when a corrugated panel 51 is placed on a positioning machine tool 1, the bottom of the protrusion of the corrugated panel 51 is aligned with a corresponding convex strip structure 101. Then, the convex pressure plate 31 and the limiting plate 42 on the long pressure plate 23 are respectively placed downward against the corresponding positions on the corrugated panel 51. The electric heater 43 heats the limiting plate 42 through the heating head 44. The limiting plate 42 transfers the heat generated by the heating to the area of ​​the corrugated panel 51 to be welded for preheating treatment. Since the corrugated panel 51 is relatively thin, the limiting plate 42 can quickly and evenly transfer heat over a large area to the corrugated panel 51. The corrugated panel 51 is then subjected to the heating. After heating, the plasticity is enhanced. When the raised portion of the corrugated panel 51 is pressed downward onto the raised strip structure 101 using the raised pressure plate 31, the raised portion of the corrugated panel 51 is supported by the raised strip structure 101 and will not sink downward locally. This allows the warped areas of the corrugated panel 51 to be better flattened on the positioning machine tool 1, realizing hot-pressing correction of the warped areas at the edges of the corrugated panel 51 and improving the edge warping phenomenon of the corrugated panel 51. In addition, during the welding process, it can also reduce the temperature difference in the welding area of ​​the corrugated panel 51, thereby reducing the cooling rate of the welding area of ​​the corrugated panel 51 after welding and mitigating the risk of hydrogen-induced cracking around the weld.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A welding equipment for processing automotive parts, comprising a positioning machine tool (1); characterized in that: It also includes a first electrically controlled clamping plate (11), a second electrically controlled clamping plate (12), a fixing frame (2), an electrically controlled lifting mechanism (21), a lifting frame (22), a long pressure plate (23), a multi-axis control mechanism, and a welding gun head (29); the front and rear sides of the positioning machine tool (1) are each slidably connected to a first electrically controlled clamping plate (11) for pushing the long side frame strip (52) to clamp the corrugated panel (51); the left and right sides of the positioning machine tool (1) are each slidably connected to a second electrically controlled clamping plate (12) for pushing the short side frame strip (53) to clamp the corrugated panel (51). 2) A fixed frame (2) is fixedly connected to the positioning machine tool (1); an electric lifting machine (21) is installed on the fixed frame (2); the lifting component of the electric lifting machine (21) is fixedly connected to a lifting frame (22); two long pressure plates (23) are fixedly connected to the lifting frame (22) to press the corrugated panel (51) onto the positioning machine tool (1); a multi-axis control mechanism is installed on the long pressure plate (23); a welding gun head (29) is installed on the multi-axis control mechanism, and the welding gun head (29) is driven by the multi-axis control mechanism to perform welding position and angle adjustment work.

2. The automotive parts processing and welding equipment according to claim 1, characterized in that: Two long pressure plates (23) are connected at equal intervals on opposite sides by several protruding pressure plates (31).

3. The automotive parts processing and welding equipment according to claim 2, characterized in that: The convex pressure plate (31) is slidably connected to the long pressure plate (23); the convex pressure plate (31) is provided with a wedge-shaped inclined surface structure (3101); the multi-axis control mechanism is connected with a push block (32) that is aligned with the wedge-shaped inclined surface structure (3101) on the same side of the convex pressure plate (31).

4. The automotive parts processing and welding equipment according to claim 3, characterized in that: Two long pressure plates (23) are slidably connected to a stop bar (33) on opposite sides; the long pressure plates (23) are equipped with an electrically controlled telescopic rod (34) that controls the forward and backward movement of the stop bar (33).

5. The automotive parts processing and welding equipment according to claim 4, characterized in that: Several recessed pressure plates (41) for pressing the recessed part of the corrugated panel (51) are fixed on the long pressure plate (23).

6. The automotive parts processing and welding equipment according to claim 5, characterized in that: A limiting plate (42) is fixed to the bottom of the concave pressure plate (41); the length distance between the front side of the front convex pressure plate (31) and the rear side of the corresponding rear convex pressure plate (31) is the same as the width distance in the front-rear direction of the corrugated panel (51).

7. The automotive parts processing and welding equipment according to claim 6, characterized in that: The left and right width distance of the limiting plate (42) is the same as the left and right width distance of the inner bottom structure of the corrugated panel (51).

8. The automotive parts processing and welding equipment according to claim 6 or 7, characterized in that: The positioning machine tool (1) is provided with several raised strip structures (101) that are adapted to the inner bottom structure of the raised part of the corrugated panel (51).

9. The automotive parts processing and welding equipment according to claim 8, characterized in that: An electric heater (43) is installed on the long pressure plate (23); a heating head (44) for heating the limiting plate (42) is installed on the electric heater (43).

10. The automotive parts processing and welding equipment according to claim 9, characterized in that: The limiting plate (42) uses a heat spreader material.

Images