A method and apparatus for welding a connector to a large die cast part

Abstract

The application discloses a connecting piece welding method and device suitable for large die castings, and belongs to the technical field of die casting welding. The welding method comprises the following steps: collecting the structural parameters of the large die casting; obtaining a plurality of spatial coordinates and a plurality of spatial angles of a plurality of welding points on the large die casting according to the structural parameters; positioning and clamping the large die casting based on a reference point; adjusting the positioning parameters of each connecting piece according to the spatial coordinates and the spatial angles; detecting and judging the posture of a single connecting piece, and welding the corresponding connecting piece to the large die casting. The welding device corresponding to the method is also disclosed. The application provides a connecting piece welding method and device suitable for large die castings, which can accurately adapt to large die castings of different structural types, cooperate with connecting pieces of different types, realize the positioning and welding of different connecting pieces on the large die castings, improve the welding efficiency of the connecting pieces, and significantly reduce the welding cost of the connecting pieces.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of die casting welding, and particularly relates to a connecting piece welding method and device suitable for large die castings. BACKGROUND

[0002] The related technical means taking the die casting technology as the core has the advantages of wide practicability, high production efficiency, excellent product performance and the like, and is one of the core technical fields of modern manufacturing industry research and development.

[0003] In the field of die casting technology, large integrated die castings gradually become a research and development hotspot in the field of die casting technology due to their strong applicability and low preparation cost. Meanwhile, with the development of large integrated die castings, many assembly processes are gradually integrated according to the working requirements of the equipment, which includes the requirement of welding connecting pieces of different sizes, structures and shapes on the large integrated die castings so as to fix or position the die castings through the connecting pieces. In this process, the welding position of the connecting piece on the die casting and the posture of the connecting piece are usually strictly required. If the welding position of the connecting piece is not correct, it will affect the wiring track of the original design wire harness, resulting in the risk that the wire harness cannot be fixed.

[0004] In the prior art, the welding of the connecting piece on the die casting is usually realized by using a hand welding gun with low cost, and the welding position of each connecting piece on the die casting is determined by using the manual line marking method on the die casting. This welding method often has a high risk of welding position deviation and usually cannot meet the requirements of customers with high precision. Another method is to use a limiting piece to limit the welding position. Although this method can slightly improve the welding efficiency of the connecting piece, the stability of the connecting piece welded by this method is insufficient, and the position of the connecting piece deviates after welding. SUMMARY

[0005] In view of one or more of the above defects or improvement needs of the prior art, the application provides a connecting piece welding method and device suitable for large die castings, which can accurately adapt to large die castings of different structure types, cooperate with different types of connecting pieces, realize the positioning and welding of different connecting pieces on the large die castings, and ensure the welding accuracy of the connecting piece on the large die casting, thereby improving the welding efficiency of the connecting piece and significantly reducing the welding cost of the connecting piece.

[0006] To achieve the above purpose, the application provides a connecting piece welding method suitable for large die castings, which comprises the following steps:

[0007] Collecting structural parameters of the large die casting;

[0008] According to the structural parameters, obtaining a plurality of spatial coordinates of a plurality of welding points on the large die casting relative to a reference point of the large die casting and a plurality of spatial angles of planes where the welding points are located relative to the reference point;

[0009] Positioning and clamping the large die casting based on the reference point;

[0010] Adjusting positioning parameters of each corresponding connecting piece according to the spatial coordinates of each welding point and the spatial angles of the planes where the welding points are located;

[0011] Detecting and judging whether the posture of a single connecting piece corresponds to the positioning parameters; if yes, welding the corresponding connecting piece to the large die casting, and detecting and judging the next connecting piece until the welding of all connecting pieces is completed; if no, readjusting the posture of the corresponding connecting piece and repeatedly detecting and judging the posture of the connecting piece.

[0012] As a further preferred embodiment of the present application, the positioning parameters include the type, position and direction of the connecting piece.

[0013] As a further preferred embodiment of the present application, the detecting and judging whether the posture of a single connecting piece corresponds to the positioning parameters comprises the following steps:

[0014] Collecting image information of a single connecting piece;

[0015] Obtaining posture information of a single connecting piece from the image information;

[0016] Comparing the posture information and the positioning parameters to obtain a detection and judgment difference;

[0017] Judging whether the detection and judgment difference is within a required threshold range; if yes, outputting that the posture of a single connecting piece corresponds to the positioning parameters; if no, outputting that the posture of the connecting piece does not correspond to the positioning parameters.

[0018] As a further preferred embodiment of the present application, the connecting piece is a stud.

[0019] Further, the present application also discloses a connecting piece welding device suitable for large die castings, which adopts the connecting piece welding method suitable for large die castings as described above to complete the welding of the connecting piece on the large die casting, and the welding device comprises:

[0020] At least one positioning clamp, the large die casting is correspondingly arranged on each positioning clamp, for clamping and fixing the large die casting;

[0021] At least one welding mechanism, each of the welding mechanisms is arranged on the corresponding welding point according to the positioning parameters calculated according to the position of the welding point on the large die casting and the spatial angle of the plane where the welding point is located.

[0022] The welding mechanism comprises a support extending along a first direction, a multi-directional adjusting arm and a welding component, one end of the multi-directional adjusting arm is provided with the welding component, and the other end of the multi-directional adjusting arm is arranged on the support, and the multi-directional adjusting arm is adjusted according to the positioning parameters to adjust the posture of the welding component. As a further preferred embodiment of the present application, the welding device further comprises a base plate, and each of the positioning clamps and each of the welding mechanisms are arranged on the base plate.

[0023] As a further preferred embodiment of the present application, a plurality of connecting areas are provided on the base plate for detachable positioning and installation of the positioning clamps and / or the welding mechanisms.

[0024] As a further preferred embodiment of the present application, at least one reference component is further provided on the base plate, and the end of each of the reference components away from the base plate corresponds to the reference point.

[0025] As a further preferred embodiment of the present application, a locking assembly is provided between the multi-directional adjusting arm and the support for locking the relative position between the multi-directional adjusting arm and the support.

[0026] As a further preferred embodiment of the present application, the locking assembly comprises a locking bolt provided on the multi-directional adjusting arm and a locking hole provided on the support for detachable fixing of the multi-directional adjusting arm on the support.

[0027] The above improved technical features can be combined with each other as long as there is no conflict between them.

[0028] Overall, compared with the prior art, the above technical solutions conceived by the present application have the following beneficial effects:

[0029] (1) The welding method for the connecting piece suitable for the large die casting, which collects the structural parameters of the large die casting; obtains the spatial coordinates of a plurality of welding points on the large die casting relative to the reference point of the large die casting and the spatial angles of the planes where the welding points are located relative to the reference point according to the structural parameters; positions and clamps the large die casting based on the reference point; adjusts the positioning parameters of each connecting piece according to the spatial coordinates of each welding point and the spatial angles of the planes where the welding points are located; detects and judges whether the posture of a single connecting piece corresponds to the positioning parameters; if yes, the corresponding connecting piece is welded to the large die casting, and the next connecting piece is detected and judged until the welding of all connecting pieces is completed; if not, the posture of the corresponding connecting piece is adjusted again, and the steps of detecting and judging the posture of the connecting piece are repeated, which can accurately adapt to large die castings of different structural types, cooperate with connecting pieces of different types, realize the positioning and welding of different connecting pieces on the large die casting, improve the welding efficiency of the connecting piece, and significantly reduce the welding cost of the connecting piece.

[0030] (2) The connecting piece welding device suitable for the large die casting, which adopts an adjustable connection form between the welding mechanism and the bottom plate to realize the preliminary adjustment of the welding attitude of the welding member in the spatial coordinate system towards the corresponding welding point. At the same time, the locking assembly composed of locking bolts and locking screw holes between the support and the multidirectional adjusting support arm further realizes the position adjustment and stable fixation of the welding member in the spatial coordinate system. Moreover, combined with the parameter design of each sub-support arm in the multidirectional adjusting support arm and the position adjustment between each sub-support arm, the flexible adjustment of the welding member in the spatial coordinate system is realized, which ensures that each welding member can be welded on the large die casting according to the specified posture according to the positioning parameters of each welding point.

[0031] (3) The present invention provides a welding method and apparatus for connectors of large die-cast parts. It has a simple structure, is easy to operate, and has high reliability. It accurately determines the positioning and clamping of the large die-cast part and the positioning parameters of the connectors by constructing a spatial coordinate system applicable to the large die-cast part and the welding apparatus based on the reference points of the large die-cast part, and combining the position information of each welding point in the spatial coordinate system. Then, under the adjustment of the welding mechanism, it ensures that the welding torch can complete the high-precision welding of the connectors on the corresponding welding points according to the required positioning parameters of each welding point and in an accurate welding posture. Simultaneously, by adopting a detachable connection between the base plate and the positioning fixture and the welding mechanism, it ensures that the positioning fixture clamps the large die-cast part first during the welding process of the connectors of the large die-cast part, avoiding any impact on the positioning and clamping of the large die-cast part by the welding mechanism. Then, the welding mechanism achieves accurate welding of each connector on the large die-cast part, significantly improving the applicability of the welding apparatus. While ensuring accurate welding of the connectors, it also significantly reduces the cost of welding the connectors, demonstrating good economic benefits and promising prospects for promotion. Attached Figure Description

[0032] Figure 1 This is a flowchart of a welding method for connectors applicable to large die-cast parts in this invention;

[0033] Figure 2 This is a perspective view of an unclamped large die casting, which is part of a welding device for connectors of large die castings according to the present invention.

[0034] Figure 3 This is a top view of an unclamped large die casting, which is part of a welding device for connectors of large die castings according to the present invention.

[0035] Figure 4 This is a perspective view of a welding device for connectors of large die-cast parts, applicable to large die-cast parts, according to the present invention;

[0036] Figure 5 This is a perspective view of a welding mechanism for a welding device for connectors of large die-cast parts, as described in this invention.

[0037] Figure 6 This is a perspective view of another angle of the welding mechanism of a welding device for connecting parts of large die-cast parts according to the present invention.

[0038] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0039] 1. Positioning fixture; 11. Positioning support component; 12. Clamping component;

[0040] 2, welding mechanism; 21, support; 22, multi-directional adjusting support arm; 221, first sub-support arm; 222, second sub-support arm; 223, handle; 23, locking assembly; 24, welding gun sleeve;

[0041] 3, bottom plate; 4, reference member; 5, large die casting. DETAILED DESCRIPTION

[0042] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. 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.

[0046] In the present application, unless otherwise explicitly specified and limited, 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 simply means that the first feature is higher in horizontal height than the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0047] Embodiments:

[0048] As shown in Figures 1-6 The connecting piece welding method and device suitable for large die castings in the preferred embodiments of the present application can accurately adapt to large die castings 5 of different structural types, cooperate with different types of connecting pieces, realize the positioning and welding of different connecting pieces on the position of the large die castings 5, and ensure the welding accuracy of the connecting pieces on the large die castings 5, thereby improving the welding efficiency of the connecting pieces and significantly reducing the welding cost of the connecting pieces.

[0049] Specifically, as shown in Figure 1 In the preferred embodiments of the present application, the connecting piece welding method suitable for large die castings includes the following steps:

[0050] S1, collecting the structural parameters of the large die casting 5;

[0051] S2, obtaining the spatial coordinates of a plurality of welding points on the large die casting 5 relative to the reference point of the large die casting 5 and the spatial angles of the planes where the welding points are located relative to the reference point according to the structural parameters;

[0052] S3, positioning and clamping the large die casting 5 based on the reference point;

[0053] S4, adjusting the positioning parameters of each connecting piece according to the spatial coordinates of each welding point and the spatial angles of the planes where the welding points are located;

[0054] S5, detecting and judging whether the posture of a single connecting piece corresponds to the positioning parameters; if yes, welding the corresponding connecting piece to the large die casting 5, and detecting and judging the next connecting piece until the welding of all connecting pieces is completed; if no, readjusting the posture of the corresponding connecting piece and repeatedly detecting and judging the posture of the connecting piece.

[0055] Further, in the preferred embodiments of the present application, the structural parameters include the reference point, shape and size of the large die casting 5, and the welding point position.

[0056] Further preferably, in the preferred embodiment of this application, the reference point of the large die-cast part 5 is used as the origin of the spatial coordinate system. Then, the spatial coordinates of the corresponding welding points are calculated based on the positions of each welding point. In the spatial coordinate system with the reference point as the origin, the plane functions of each plane where each welding point is located are determined. The spatial angle of the plane where the corresponding welding point is located is obtained according to the plane function. And according to the spatial coordinates of the corresponding welding point, the positioning parameters of each connector on the corresponding welding point are determined. Then, the posture of the connector at the corresponding welding point is determined, detected, and corrected by the positioning parameters to ensure that the connector adjusted according to the positioning parameters can achieve accurate alignment at the corresponding welding point, significantly improving the coaxiality and posture accuracy of the connector welding at the corresponding welding point.

[0057] Furthermore, in a preferred embodiment of this application, the positioning parameters include the type, position, and orientation of the connectors to ensure that the connectors can adapt to the connection requirements of the large die-cast part 5 and to ensure that each connector can be accurately welded to the accurate position of the large die-cast part 5.

[0058] More preferably, in a preferred embodiment of this application, detecting and determining whether the posture of a single connector corresponds to the positioning parameters includes the following steps:

[0059] S51. Acquire image information of a single connector;

[0060] S52. Obtain the attitude information of a single connector through the image information;

[0061] S53. Compare the posture information and the positioning parameters to obtain the detection and judgment difference;

[0062] S54. Determine whether the detection difference is within the required threshold range; if yes, output the positioning parameter corresponding to the posture of a single connector; if no, output when the posture of the connector does not correspond to the positioning parameter.

[0063] More specifically, in a preferred embodiment of this application, the connector is a stud, which enables the large die-cast part 5 to be stably installed or fixed by welding the stud.

[0064] Furthermore, such as Figures 2-6 As shown in the preferred embodiment of this application, a welding device for connectors suitable for large die-cast parts is also disclosed, which includes at least one positioning fixture 1 and at least one welding mechanism 2. The positioning fixture 1 serves as a supporting and positioning structure for the large die-cast part 5. In actual use, the large die-cast part 5 is placed on the positioning fixture 1 to ensure that the connector maintains stable positioning of the large die-cast part 5 during the welding process, thereby effectively improving the accuracy of welding the connector onto the large die-cast part 5.

[0065] At least one welding mechanism 2 corresponds to the welding position of each connecting piece on the large die casting 5, and is arranged around the large die casting 5, so that each welding mechanism 2 can realize accurate and stable welding of the connecting piece on the large die casting 5. The welding mechanism 2 comprises a support 21, a multi-directional adjusting support arm 22 and a welding member. Among them, the support 21 is arranged on one side of the large die casting 5, and at least one multi-directional adjusting support arm 22 is arranged on the support 21, and at least one welding member is arranged at the end of the multi-directional adjusting support arm 22 away from the support 21. In actual use, first, the position of the support 21 is adjusted so that the connecting piece to be welded can be roughly aligned with the welding position of the corresponding connecting piece on the large die casting 5; second, the posture of the multi-directional adjusting support arm 22 is adjusted according to the spatial coordinates of the welding point and the spatial angle of the welding surface, so that the welding member arranged on the multi-directional adjusting support arm 22 can be accurately aligned with the welding position of the connecting piece on the large die casting 5; finally, the connecting piece is stably and accurately welded to the welding point of the large die casting 5 by the welding member.

[0066] Further, in the preferred embodiment of the present application, the positioning clamp 1 comprises a positioning support member 11 and at least one clamping member 12, the positioning support member 11 is arranged vertically, and each clamping member 12 is arranged on the positioning support member 11. Preferably, each clamping member 12 can be flexibly adjusted and fixed on the positioning support member 11, so that the clamping member 12 can adapt to the positioning of the large die casting 5 with different positioning requirements. Further preferably, the sliding connection between the clamping member 12 and the positioning support member 11 is achieved by corresponding matching sliding grooves and sliding blocks, and the stable limiting between the clamping member 12 and the positioning support member 11 is achieved by fasteners such as positioning pins.

[0067] Further, in the preferred embodiment of the present application, in order to ensure that the positioning fixture 1 can realize stable positioning of the large die casting 5, the welding device further comprises a base plate 3, and each positioning fixture 1 and / or welding mechanism 2 is detachably mounted on the base plate 3, so as to provide a stable and reliable mounting basis for each positioning fixture 1 and / or welding mechanism 2. In actual use, the positioning fixture 1 can be first mounted on the base plate 3, then the large die casting 5 is stably mounted on the positioning fixture 1, and finally the welding mechanism 2 is mounted on the base plate 3, and the welding member posture of the welding mechanism 2 is adjusted to align the welding points of the connectors at each position. That is, by adopting the detachable connection mode between the welding mechanism 2 and the base plate 3, when the positioning fixture 1 is used to position the large die casting 5, the welding mechanism 2 can be detached from the base plate 3; after the positioning fixture 1 completes the positioning of the large die casting 5, the welding mechanism 2 can be repositioned on the top surface of the large die casting 5, facilitating accurate welding of the connectors by the welding mechanism 2. It should be noted that the length direction of the base plate 3 is the longitudinal direction, i.e., the X-axis direction, the width direction of the base plate 3 is the transverse direction, i.e., the Y-axis direction, and the thickness direction of the base plate 3 is the vertical direction (perpendicular to or plumb to the horizontal direction), i.e., the Z-axis direction, which can also be understood as the first direction.

[0068] Of course, the connection mode between the positioning fixture 1 and / or the welding mechanism 2 and the base plate 3 is not limited to the above mode. In another preferred embodiment of the present application, the base plate 3 is connected to the positioning fixture 1 and / or the welding mechanism 2 by a sliding connection mode such as a sliding pair. In actual use, when the positioning fixture 1 needs to position the large die casting 5, the welding mechanism 2 is first slid away from the positioning fixture 1 to facilitate positioning of the large die casting 5 by the positioning fixture 1; after the large die casting 5 is positioned, the welding mechanism 2 is repositioned around the large die casting 5, and the posture of the welding member is adjusted to ensure that each welding member can accurately correspond to the welding point, so that the connectors at each welding point can be accurately welded to the large die casting 5.

[0069] Further preferably, in the preferred embodiment of the present application, a plurality of connection regions are provided on the base plate 3, and each positioning fixture 1 and welding mechanism 2 can be installed in the corresponding connection region according to the specific position of the welding point on the large die casting 5, thereby reducing the distance that the welding mechanism 2 needs to adjust to align the welding points, and in turn reducing the cantilever distance between the welding member and the support 21, to ensure that the welding mechanism 2 can accurately weld the connectors to the accurate welding points. This further improves the welding accuracy of the welding device for the connectors on the large die casting 5, while reducing the welding cost of the connectors on the large die casting 5 and ensuring the welding quality of the connectors on the large die casting 5.

[0070] More specifically, in the preferred embodiment of the present application, at least one reference member 4 is further arranged on the base plate 3, and the end of each reference member 4 away from the base plate 3 corresponds to a reference point on the large die casting, so as to ensure that the spatial coordinates of the large die casting 5 can be applied to the welding device, and the positioning parameters of each welding point on the large die casting 5 can be stably adapted to the corresponding welding mechanism 2, so as to accurately adjust the posture of the welding mechanism 2 and realize high-precision welding of the connecting piece at the welding point.

[0071] Further, in the preferred embodiment of the present application, a locking assembly 23 is arranged between the multi-directional adjusting support arm 22 and the support 21. In actual use, by adjusting the positional relationship between the multi-directional adjusting support arm 22 and the support 21, the posture of the welding member arranged at the end of the multi-directional adjusting support arm 22 is adjusted, and thus the welding member can be closer to the posture specified by the positioning parameters. That is, by adjusting the positional relationship between the multi-directional adjusting support arm 22 and the support 21, the posture of the welding member is partially adjusted, so that the multi-directional adjusting support arm 22 only needs to complete partial adjustment, and the welding member can conform to the posture specified by the positioning parameters. Further, under the premise of ensuring the welding precision of the connecting piece on the large die casting 5, the welding resource cost and the labor time cost of the connecting piece on the large die casting 5 are reduced as much as possible.

[0072] Further preferably, in the preferred embodiment of the present application, the locking assembly 23 is a locking bolt and a locking screw hole correspondingly arranged on the multi-directional adjusting support arm 22 and the support 21. Specifically, the locking screw hole is arranged on the support 21, and correspondingly, a through hole or a screw hole is also arranged on the multi-directional adjusting support arm 22. In actual use, when the relative positional relationship between the multi-directional adjusting support arm 22 and the support 21 is adjusted, the multi-directional adjusting support arm 22 is stably positioned on the locking support 21 by passing the locking bolt through the through hole and screwing it into the locking screw hole arranged on the support 21, and then the stability of the posture of the welding member during welding is ensured, and the stability of the welding device is improved.

[0073] Of course, the locking assembly 23 is not limited to the above structure, and in another preferred embodiment of the present application, the locking assembly 23 adopts a locking clamp arranged around the support 21 and the multi-directional adjusting support arm 22, and the relative position between the support 21 and the multi-directional adjusting support arm 22 is limited by clamping the support 21 and the multi-directional adjusting support arm with the locking clamp.

[0074] Further, in the preferred embodiment of the present application, the multi-directional adjusting arm 22 comprises a plurality of sub-arms. In actual use, the positional parameters of each welding point, the position of the support 21 in the spatial coordinate system, and the positional relationship between the support 21 and the multi-directional adjusting arm 22 are used to set the structural parameters of each sub-arm and the positional relationship between two adjacent sub-arms, thereby ensuring that the welding member arranged at the upper end of the multi-directional adjusting arm 22 can meet the requirements of the positional parameters.

[0075] Further preferably, in one preferred embodiment of the present application, the multi-directional adjusting arm 22 is not limited to the above structure. The multi-directional adjusting arm 22 comprises a first sub-arm 221 and a second sub-arm 222. The first sub-arm 221 and the second sub-arm 222 are rotationally connected, thereby enabling the first sub-arm 221 and the second sub-arm 222 to rotate about an axis. The end of the second sub-arm 222 away from the support 21 is rotationally connected to the welding mechanism 2, also enabling rotation about an axis. In combination with the rotational connection between the first sub-arm 221 and the support 21, the welding mechanism 2 can rotate about three axes in the spatial coordinate system, thereby ensuring that the welding member can meet the requirements of the positional parameters. Preferably, at least one handle 223 is arranged on the first sub-arm 221 to facilitate adjustment of the posture of the first sub-arm 221.

[0076] More specifically, in the preferred embodiment of the present application, at least one of the first sub-arm 221 and the second sub-arm 222 can be adjusted in length, thereby further improving the adjustability of the multi-directional adjusting arm 22.

[0077] Further, in the preferred embodiment of the present application, at least one welding member is arranged on the multi-directional adjusting arm 22. For example, when two welding points are close to each other, two adjacent welding members can be arranged on one multi-directional adjusting arm 22, thereby reducing the cost of welding the connecting member.

[0078] Further, in the preferred embodiment of the present application, the support 21 and the multi-directional adjusting arm 22 are made of stainless steel, thereby improving the stability of the welding member.

[0079] Further preferably, in order to reduce the weight of the end of the multi-directional adjusting arm 22 away from the support 21, the welding member comprises a welding gun sleeve 24. In actual use, the welding gun limited by the welding gun sleeve 24 can weld the connecting member to the corresponding welding point according to the requirements of the positional parameters by adjusting the posture of the welding gun sleeve 24. That is, one welding gun can be used for welding connecting members of a plurality of welding gun sleeves 24.

[0080] More specifically, in the preferred embodiment of the present application, different welding gun sleeves 24 can be provided for different types of connectors, for example, two different colors of welding gun sleeves 24 can be provided to ensure that the welding gun can accurately weld the connectors to the corresponding welding points. Of course, the distinction between different welding gun sleeves 24 is not limited to the above form, and can also be achieved by providing a light source or a switchable color card on the welding gun sleeve 24 to achieve flexible distinction between different connectors.

[0081] Further, in the preferred embodiment of the present application, the welding mechanism 2 is also provided with a detection assembly for detecting whether the welding member meets the positioning parameter requirements. Preferably, the detection assembly includes an image acquisition module and a processing module, the image acquisition module acquires image information of the welding member, the processing module receives the image information, judges the posture of the welding member through image recognition, and obtains a detection judgment difference by comparing the posture in the image information with the positioning information. Then, it is determined whether the detection judgment difference is within the required threshold to complete the judgment of the posture of the welding mechanism 2. Further preferably, the detection assembly can also use a laser detection module to detect the posture of the welding member. In addition, a measuring device can also be used to measure the posture of the welding member.

[0082] Further, in another preferred embodiment of the present application, the welding mechanism 2 is not limited to the above structure, and can also use a multi-axis robot with a welding member at the moving end to automatically adjust the posture of the welding mechanism 2 in combination with a spatial coordinate system.

[0083] The present application discloses a connector welding method and device suitable for large die castings, which has the advantages of simple structure, easy operation and high reliability. The device constructs a spatial coordinate system suitable for the large die casting 5 and the welding device according to the reference points of the large die casting 5, and accurately determines the positioning and clamping of the large die casting 5 and the positioning parameters of the connectors in combination with the position information of each welding point in the spatial coordinate system. Then, under the adjustment of the welding mechanism 2, the welding gun can complete high-precision welding of the connectors on the corresponding welding points according to the required positioning parameters of each welding point. At the same time, the detachable connection between the base plate 3 and the positioning clamp 1 and the welding mechanism 2 ensures that the positioning clamp 1 can first clamp the large die casting 5 during the connector welding process of the large die casting 5, avoiding the influence of the welding mechanism 2 on the positioning and clamping of the large die casting 5. Then, the welding mechanism 2 can accurately weld each connector on the large die casting 5, significantly improving the applicability of the welding device, reducing the cost of connector welding, and having good economic benefits and promotion prospects.

[0084] Those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A welding method for connectors suitable for large die-cast parts, characterized in that, Includes the following steps: Collect the structural parameters of the large die-cast part; The structural parameters include the reference points, shape and size of large die-cast parts, and the location of welding points. Based on the structural parameters, several spatial coordinates of several welding points on the large die casting relative to the reference point of the large die casting and several spatial angles of the planes where the welding points are located relative to the reference point are obtained. The large die-cast part is positioned and clamped based on the reference point; Adjust the positioning parameters of each connector according to the spatial coordinates of each welding point and the spatial angle of the plane where the welding point is located; Specifically, the spatial coordinates of each welding point are calculated based on its location; in a spatial coordinate system with the reference point as the origin, the plane functions of each plane where each welding point is located are determined; the spatial angle of the plane where the corresponding welding point is located is obtained based on the plane function; and the positioning parameters of each connector on the corresponding welding point are determined based on the spatial coordinates of the corresponding welding point. The positioning parameters include the type, position, and orientation of the connector; The system detects whether the posture of a single connector corresponds to the positioning parameters; if so, it welds the corresponding connector to the large die-cast part and detects the next connector until all connectors are welded; if not, it readjusts the posture of the corresponding connector and repeats the detection and judgment of the connector's posture.

2. The welding method for connectors suitable for large die-cast parts according to claim 1, wherein, The process of detecting and determining whether the posture of a single connector corresponds to the positioning parameters includes the following steps: Acquire image information of a single connector; The attitude information of a single connector is obtained from the image information; By comparing the attitude information and the positioning parameters, a detection and judgment difference is obtained; Determine whether the detection difference is within the required threshold range; if yes, output the positioning parameter corresponding to the posture of a single connector; if no, output when the posture of the connector does not correspond to the positioning parameter.

3. The welding method for connectors suitable for large die-cast parts according to claim 1 or 2, wherein, The connector is a stud.

4. A welding device for connectors suitable for large die-cast parts, characterized in that, For welding a connector to a welding point on a large die casting using the connector welding method applicable to large die castings as described in any one of claims 1 to 3; the welding apparatus includes: At least one positioning fixture is provided, and the large die-cast part is correspondingly disposed on each of the positioning fixtures for clamping and fixing the large die-cast part; At least one welding mechanism, wherein each of the welding components is arranged on the corresponding welding point according to positioning parameters, the positioning parameters being calculated based on the position of the welding point on the large die casting and the spatial angle of the plane in which the welding point is located; The welding mechanism includes a bracket extending along a first direction, a multi-directional adjustable arm, and a welding component. One end of the multi-directional adjustable arm is provided with the welding component, and the other end of the multi-directional adjustable arm is provided on the bracket. It is used to adjust the multi-directional adjustable arm according to the positioning parameters to adjust the posture of the welding component.

5. The welding device for connectors suitable for large die-cast parts according to claim 4, wherein, The welding device also includes a base plate, on which each of the positioning fixtures and welding mechanisms are mounted.

6. The welding device for connectors of large die-cast parts according to claim 5, wherein, The base plate is provided with several connection areas for the detachable positioning and installation of the positioning fixture and / or the welding mechanism.

7. The welding device for connectors suitable for large die-cast parts according to claim 5, wherein, At least one reference member is also provided on the base plate, and the end of each reference member facing away from the base plate corresponds to the reference point.

8. The welding device for connectors suitable for large die-cast parts according to claim 4, wherein, A locking assembly is provided between the multi-directional adjustable arm and the bracket to lock the relative position between the multi-directional adjustable arm and the bracket.

9. The welding device for connectors of large die-cast parts according to claim 8, wherein, The locking assembly includes a locking bolt correspondingly disposed on the multi-directional adjusting arm and a locking screw hole disposed on the bracket, for detachable fixing of the multi-directional adjusting arm on the bracket.

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