Welding fixture and busbar welding device

Abstract

The application discloses a welding tool and a busbar welding device, and relates to the field of positioning jigs. The welding tool comprises a tool platform, a positioning assembly and an auxiliary supporting mechanism. The tool platform is used for placing a workpiece to be welded. The positioning assembly is arranged on the tool platform and is used for abutting against the workpiece to be welded, so as to fix the workpiece to be welded on the tool platform. The auxiliary supporting mechanism is arranged on the tool platform and is used for abutting against a target side of the workpiece to be welded, so as to prevent the target side from deforming. According to the scheme, the auxiliary supporting mechanism is used for limiting the position of the part of the workpiece to be welded which is prone to thermal shrinkage deformation, so as to prevent the part from deforming in the welding process. Thus, the size precision and shape stability of the workpiece can be maintained after the welding is completed, and a subsequent shape correction process is omitted, the operation time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of positioning fixture technology, and in particular to a welding fixture and junction box welding equipment. Background Technology

[0002] In the manufacturing process of sheet metal products such as junction boxes, welding is usually required to connect and fix multiple plates. However, since sheet metal products typically have long dimensions and relatively thin thicknesses, the heat input during welding can easily cause thermal shrinkage and deformation of the plates. This not only affects the appearance quality of the product but may also cause difficulties in subsequent assembly due to large dimensional deviations, and even reduce the mechanical strength and sealing performance of the product.

[0003] To avoid these problems, the current industry solution is to perform shaping treatments on the products after welding, such as by flame straightening, mechanical stretching, or manual hammering to correct dimensions. However, these shaping processes significantly extend the processing time, resulting in low production efficiency and making it difficult to meet the needs of mass production. Utility Model Content

[0004] The main purpose of this application is to propose a welding fixture that aims to solve the technical problem that existing sheet metal products require straightening treatment after the welding process, resulting in low production efficiency.

[0005] To achieve the above objectives, the welding fixture proposed in this application includes:

[0006] Tooling platform, used to place workpieces to be welded;

[0007] A positioning component is disposed on the tooling platform; the positioning component is used to abut against the workpiece to be welded to fix the workpiece to be welded on the tooling platform;

[0008] An auxiliary support mechanism is provided on the tooling platform; the auxiliary support mechanism is used to abut against the target side of the workpiece to be welded in order to prevent the target side from deforming.

[0009] In one embodiment, the workpiece to be welded has a frame structure, and the lower end face of the frame structure is placed on the tooling platform;

[0010] The positioning component includes a first positioning mechanism and a second positioning mechanism. The first positioning mechanism is used to abut against the inner periphery of the frame structure, and the second positioning mechanism is used to abut against the outer periphery of the frame structure.

[0011] In one embodiment, the frame structure is formed by enclosing multiple side panels;

[0012] The first positioning mechanism includes at least two first telescopic drive devices; the telescopic end of each first telescopic drive device abuts against the inner wall of at least one of the side plates during the process of moving towards the outer periphery of the frame structure, and the telescopic end of each first telescopic drive device separates from the inner wall of at least one of the side plates during the process of moving towards the inner periphery of the frame structure.

[0013] In one embodiment, the second positioning mechanism includes at least two second telescopic drive devices; the telescopic end of each second telescopic drive device abuts against the outer wall of at least one of the side plates during the movement toward the inner periphery of the frame structure, and the telescopic end of each second telescopic drive device separates from the outer wall of at least one of the side plates during the movement toward the outer periphery of the frame structure.

[0014] In one embodiment, any two adjacent side plates are referred to as the first plate and the second plate, respectively, and the angle between the first plate and the second plate forms a corner.

[0015] The first positioning mechanism further includes a positioning corner block, which is connected to the telescopic end of the first telescopic drive device. When the telescopic end of the first telescopic drive device moves outward, the positioning corner block abuts against the corner portion, and the positioning corner block is respectively attached to the inner sidewall of the first plate and the inner sidewall of the second plate.

[0016] In one embodiment, the positioning corner block is provided with a cavity, which includes at least one of a concave cavity and a hole.

[0017] In one embodiment, the positioning component includes a pressing positioning mechanism; the pressing positioning mechanism is used to abut against the upper side of the workpiece to be welded away from the tooling platform, so as to press the workpiece to be welded onto the tooling platform.

[0018] In one embodiment, the welding fixture further includes a reference positioning block, which is detachably connected to the fixture platform; the reference positioning block is provided with a positioning groove with the opening facing upward; the workpiece to be welded has a frame structure, and the lower part of the frame structure is engaged in the positioning groove.

[0019] In one embodiment, the pressing and positioning mechanism includes a pneumatic rotary cylinder and a pressing block, wherein the pressing block is connected to the movable part of the pneumatic rotary cylinder;

[0020] The pneumatic corner cylinder is used to drive the pressure block to move vertically, so that the pressure block is close to or away from the workpiece to be welded and away from the upper side of the tooling platform; and the pneumatic corner cylinder is used to drive the pressure block to rotate around the vertical axis, so that the pressure block enters or exits the vertical projection area of ​​the workpiece to be welded.

[0021] In one embodiment, the workpiece to be welded has a frame structure, the lower end face of the frame structure is placed on the tooling platform, and at least a portion of the frame structure constitutes the target side portion;

[0022] The auxiliary support mechanism includes at least two auxiliary telescopic drive devices. The telescopic end of the auxiliary telescopic drive device abuts against the inner circumference of the target side during outward movement, and the telescopic end of the auxiliary telescopic drive device separates from the inner circumference of the target side during inward movement.

[0023] In one embodiment, the frame structure is formed by enclosing multiple side panels, at least one of the side panels being a deformable plate, the deformable plate constituting the target side portion;

[0024] The telescopic end of the auxiliary telescopic drive device abuts against the inner wall of the deformable plate body during the process of moving towards the outer periphery of the frame structure, and the telescopic end of the auxiliary telescopic drive device separates from the inner wall of the deformable plate body during the process of moving towards the inner periphery of the frame structure.

[0025] This application also proposes a junction box welding device, which includes the welding fixtures as described above.

[0026] This application integrates a positioning component and an auxiliary support mechanism on a tooling platform. The positioning component securely fixes the workpiece to be welded on the tooling platform, while the auxiliary support mechanism is specifically designed for the target side of the workpiece that is prone to thermal shrinkage deformation during welding. The auxiliary support mechanism provides additional support and restraint for the target side, thus offsetting the thermal shrinkage force caused by welding heat through the supporting force applied by the auxiliary support mechanism. This prevents significant thermal shrinkage deformation of the target side, effectively maintaining the dimensional accuracy and shape stability of the workpiece after welding. As a result, the workpiece meets the requirements for size and shape immediately after welding, eliminating the need for subsequent straightening processes. This shortens the operation time, improves production efficiency, and reduces production costs, providing an efficient and economical solution for the mass welding manufacturing of workpieces. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the welding fixture for combiner boxes in the prior art;

[0029] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the welding fixture provided in this application.

[0030] Explanation of icon numbers:

[0031] 1000. Combiner box enclosure;

[0032] 1100, Rectangular base plate; 1200, First rectangular side plate; 1300, Second rectangular side plate;

[0033] 2000, Welding platform; 3000, Positioning fixture;

[0034] 1. Tooling platform;

[0035] 2. Positioning assembly; 21. First positioning mechanism; 22. Second positioning mechanism; 23. Pressing positioning mechanism; 211. First telescopic drive device; 212. Positioning corner block; 221. Second telescopic drive device; 231. Pneumatic corner cylinder; 232. Pressing block;

[0036] 3. Auxiliary support mechanism; 31. Auxiliary telescopic drive device;

[0037] 4. Reference positioning block; 41. Positioning groove.

[0038] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] In the manufacturing process of sheet metal products such as junction boxes, welding is usually required to connect and fix multiple plates. However, since sheet metal products typically have long dimensions and relatively thin thicknesses, the heat input during welding can easily cause thermal shrinkage and deformation of the plates. This not only affects the appearance quality of the product but may also cause difficulties in subsequent assembly due to large dimensional deviations, and even reduce the mechanical strength and sealing performance of the product.

[0043] To avoid these problems, the current industry solution is to perform straightening treatment on the product after welding, such as by flame straightening, mechanical stretching, or manual hammering to correct dimensions. However, these straightening processes prolong the production cycle, resulting in low production efficiency and making it difficult to meet the needs of mass production.

[0044] Reference Figure 1Taking the existing junction box welding process as an example, the semi-finished junction box body 1000 obtained after the bending process has a rectangular base plate 1100, two first rectangular side plates 1200, and two second rectangular side plates 1300. The bottom edges of the two first rectangular side plates 1200 are respectively connected to the two long sides of the rectangular base plate 1100, and the bottom edges of the two second rectangular side plates 1300 are respectively connected to the two short sides of the rectangular base plate 1100. The two first rectangular side plates 1200 and the two second rectangular side plates 1300 are connected to each other. The side panels 1300 enclose an unclosed rectangular frame. There are gaps between the sides of the adjacent first rectangular side panels 1200 and the sides of the second rectangular side panels 1300 because they are not joined. The semi-finished product of the junction box 1000 has a total of four gaps. The welding process requires welding the areas where these four gaps are located so that the two first rectangular side panels 1200 and the two second rectangular side panels 1300 are connected to form an integral rectangular frame, thereby obtaining the finished product of the junction box 1000.

[0045] In the actual welding process, the semi-finished junction box 1000 needs to be placed bottom-down in the working area of ​​the welding platform 2000. Multiple positioning fixtures 3000 arranged around the working area restrict the junction box 1000's degrees of freedom in all directions, thus fixing the junction box 1000 onto the welding platform 2000. Then, the junction box 1000 can be welded using the appropriate welding device. For example... Figure 1 As shown, the first rectangular side plate 1200 is relatively long, and its thermal shrinkage deformation during the welding process is quite obvious. Therefore, after welding, the two first rectangular side plates 1200 tend to shrink significantly inward. Subsequently, a straightening process is needed to restore the inward shrinkage of the first rectangular side plate 1200 to the outside, so as to obtain a finished junction box 1000 that meets the requirements. However, the addition of the straightening process will prolong the production cycle and reduce the production efficiency of the junction box 1000, making it difficult to meet the needs of mass production.

[0046] To address the aforementioned issues, this application proposes a welding fixture that, while fixing the workpiece to be welded using conventional positioning components, also employs an auxiliary support mechanism to perform additional limiting operations on parts of the workpiece prone to thermal shrinkage and deformation, thereby preventing deformation of these parts during the welding process. This ensures that the dimensional accuracy and shape stability of the workpiece are maintained after welding, eliminating the need for subsequent straightening processes, shortening operation time, and improving production efficiency.

[0047] Please see Figure 2 The welding fixture provided in one embodiment of this application includes:

[0048] Tooling platform 1 is used to place the workpiece to be welded (not shown in the figure);

[0049] Positioning component 2 is set on tooling platform 1; positioning component 2 is used to abut against the workpiece to be welded so as to fix the workpiece to be welded on tooling platform 1.

[0050] The auxiliary support mechanism 3 is set on the tooling platform 1; the auxiliary support mechanism 3 is used to abut the target side of the workpiece to be welded, so as to prevent the target side from deforming.

[0051] In this embodiment, the tooling platform 1 can refer to a fixed workbench or a movable structure. When the tooling platform 1 adopts a movable structure, it can be connected to a positioner or other movable equipment. The movable equipment can drive the tooling platform 1 to move, so as to perform actions such as flipping the workpiece to be welded on the tooling platform 1 during the welding process. This makes it easier for the welding device to weld various welding parts on the workpiece to be welded, thereby improving the flexibility and efficiency of the welding operation.

[0052] A positioning component 2 is provided on the tooling platform 1. The positioning component 2 is used to restrict the degrees of freedom of the workpiece to be welded in various directions, ensuring that the workpiece to be welded can be stably fixed on the tooling platform 1 during the welding process. The positioning component 2 may include multiple positioning units, which are arranged on the tooling platform 1 in a preset manner. Each positioning unit has at least two states: a locked state and an unlocked state. The switching operation between the locked and unlocked states can be completed manually or automatically, such as by hydraulic, pneumatic, or electric drive. In the locked state, the positioning unit contacts a specific part of the workpiece to be welded and applies external force to restrict the movement or rotation of the workpiece. This external force can take various forms, including but not limited to pressing, fastening, or other fixing methods, to ensure the positional stability of the workpiece to be welded during the welding process. In the unlocked state, the positioning unit separates from the workpiece to be welded, allowing the welded workpiece to be removed from the tooling platform 1, while a new workpiece to be welded can be placed on the tooling platform 1 for the next round of welding operations.

[0053] The tooling platform 1 is also equipped with an auxiliary support mechanism 3, which is used to abut against the target side of the workpiece to be welded. The target side refers to the part of the workpiece to be welded that is prone to thermal shrinkage and deformation during welding due to its long size, thin thickness, etc., for example... Figure 1 The first rectangular side plate 1200 of the junction box housing 1000 shown. The core function of the auxiliary support mechanism 3 is to provide stable support for the target side during the welding process to prevent the target side from deforming in a specific direction under heat.

[0054] In practical implementation, the auxiliary support mechanism 3 can adopt various structural forms, including but not limited to adjustable support rods, pneumatic support devices, and hydraulic support devices. These mechanisms can make close contact with the target side during welding and apply appropriate counterforce to balance the thermal shrinkage force caused by welding heat. In this way, the auxiliary support mechanism 3 can provide targeted support to the target side of the workpiece to be welded, avoiding large-scale thermal shrinkage deformation of the target side. This maintains the dimensional accuracy and shape stability of the workpiece after welding, ensuring that the workpiece meets the dimensional and shape requirements immediately after welding, thus eliminating the need for subsequent straightening processes.

[0055] Therefore, this embodiment integrates a positioning component 2 and an auxiliary support mechanism 3 on the tooling platform 1. The positioning component 2 is used to securely fix the workpiece to be welded on the tooling platform 1, while the auxiliary support mechanism 3 is specifically designed for the target side of the workpiece that is prone to thermal shrinkage deformation during the welding process. The auxiliary support mechanism 3 can provide additional support and limitation for the target side. In this way, the supporting force applied by the auxiliary support mechanism 3 can offset the thermal shrinkage force caused by the welding heat, avoiding large-scale thermal shrinkage deformation of the target side, effectively maintaining the dimensional accuracy and shape stability of the workpiece after welding. This allows the workpiece to meet the requirements in terms of size and shape after welding, thereby eliminating the need for subsequent straightening processes. This shortens the operation time, improves production efficiency, and reduces production costs, providing an efficient and economical solution for the mass welding manufacturing of workpieces.

[0056] In one embodiment, refer to Figure 2 The workpiece to be welded has a frame structure, and the lower end face of the frame structure is placed on the tooling platform 1.

[0057] The positioning component 2 includes a first positioning mechanism 21 and a second positioning mechanism 22. The first positioning mechanism 21 is used to abut against the inner periphery of the frame structure, and the second positioning mechanism 22 is used to abut against the outer periphery of the frame structure.

[0058] Specifically, the frame structure can refer to the part of the workpiece to be welded that is enclosed by multiple plate structures.

[0059] The first positioning mechanism 21 abuts against the inner periphery of the frame structure, while the second positioning mechanism 22 abuts against the outer periphery of the frame structure. This design allows the workpiece to be fixed from both the inner and outer sides, providing more stable support and more precise positioning. Based on this positioning method, the positional stability of the workpiece during welding is improved, contributing to enhanced welding quality and efficiency.

[0060] The specific forms of the first positioning mechanism 21 and the second positioning mechanism 22 can be adjusted according to the characteristics and welding requirements of different workpieces to be welded. For example, the first positioning mechanism 21 and the second positioning mechanism 22 may include adjustable clamps, telescopic rods or other mechanical structures, and their positions can be adjusted manually or automatically by hydraulic, pneumatic, electric or other methods to meet the positioning requirements of workpieces to be welded of different sizes and shapes.

[0061] In one embodiment, refer to Figure 2 The frame structure is formed by enclosing multiple side panels;

[0062] The first positioning mechanism 21 includes at least two first telescopic drive devices 211; the telescopic end of each first telescopic drive device 211 abuts against the inner wall of at least one side plate during the process of moving towards the outer periphery of the frame structure, and the telescopic end of each first telescopic drive device 211 separates from the inner wall of at least one side plate during the process of moving towards the inner periphery of the frame structure.

[0063] Furthermore, referring to Figure 2 The second positioning mechanism 22 includes at least two second telescopic drive devices 221; the telescopic end of each second telescopic drive device 221 abuts against the outer wall of at least one side plate during the process of moving towards the inner periphery of the frame structure, and the telescopic end of each second telescopic drive device 221 separates from the outer wall of at least one side plate during the process of moving towards the outer periphery of the frame structure.

[0064] Specifically, taking the existing manifold as an example, the frame structure is formed by the four side plates of the manifold. In the actual welding process, the manifold can be placed on the tooling platform 1 with the bottom plate facing upwards, so that the first positioning mechanism 21 is within the enclosure of the frame structure, and the second positioning mechanism 22 is outside the enclosure of the frame structure.

[0065] The first positioning mechanism 21 may include four first telescopic drive devices 211, each corresponding to one of the four side panels of the junction box. Each first telescopic drive device 211 can extend or retract its telescopic end. It should be noted that the extension of the telescopic end can be outward or inward, and the retraction of the telescopic end can also be outward or inward, depending on the arrangement of the first telescopic drive devices 211, which is not limited here. When the four first telescopic drive devices 211 drive their telescopic ends outward, the four telescopic ends will abut against the inner walls of the four side panels, thereby providing support from the inside and restricting their movement. When the four first telescopic drive devices 211 drive their telescopic ends inward, the four telescopic ends will separate from the inner walls of the corresponding side panels.

[0066] Similarly, the second positioning mechanism 22 may include four second telescopic drive devices 221, each corresponding to one of the four side panels of the junction box. Each second telescopic drive device 221 can extend or retract its telescopic end. It should be noted that the extension of the telescopic end can be either outward or inward, and the retraction of the telescopic end can also be either outward or inward, depending on the arrangement of the second telescopic drive devices 221. When the four second telescopic drive devices 221 drive their telescopic ends inward, the four telescopic ends will abut against the outer walls of the four side panels, thus providing support from the outside and restricting their movement. When the four second telescopic drive devices 221 drive their telescopic ends outward, the four telescopic ends will separate from the outer walls of the corresponding side panels.

[0067] Based on the above configuration, when the telescopic ends of each first telescopic drive device 211 and each second telescopic drive device 221 abut against the inner and outer walls of the corresponding side plates, they can clamp the side plates that have not yet been welded into an integral structure. This allows for the overall positioning of the workpiece to be welded while individually restricting the freedom of movement of each side plate. Then, the welding device can be used to perform welding operations on the workpiece. When the telescopic ends of each first telescopic drive device 211 and each second telescopic drive device 221 separate from the inner and outer walls of the corresponding side plates, the positioning of the workpiece to be welded can be released. At this time, the welded workpiece can be removed from the tooling platform 1 and a new workpiece to be welded can be placed on it.

[0068] The first telescopic drive device 211 and the second telescopic drive device 221 can be controlled by pneumatic, hydraulic, or electric drive. Preferably, both the first telescopic drive device 211 and the second telescopic drive device 221 are cylinders, with the piston portion of the cylinder forming its telescopic end.

[0069] In this embodiment, multiple first telescopic drive devices 211 abut and limit the workpiece to be welded from different positions on the inside, and multiple second telescopic drive devices 221 abut and limit the workpiece to be welded from different positions on the outside. This can ensure the positioning stability of each side plate by using clamping action, while making it easier to make adaptive adjustments for different limiting areas, thereby better adapting to workpieces of different sizes to be welded and different welding requirements.

[0070] In one embodiment, refer to Figure 2 Any two adjacent side plates are called the first plate and the second plate, respectively, and the angle between the first plate and the second plate forms a corner.

[0071] The first positioning mechanism 21 also includes a positioning corner block 212, which is connected to the telescopic end of the first telescopic drive device 211. When the telescopic end of the first telescopic drive device 211 moves outward, the positioning corner block 212 abuts against the corner, and the positioning corner block 212 is respectively attached to the inner sidewall of the first plate and the inner sidewall of the second plate.

[0072] Specifically, taking the existing junction box as an example, any two adjacent side plates on the junction box are used as the first plate and the second plate, and the angle between the first plate and the second plate is a right angle. Correspondingly, the positioning corner block 212 can be configured as a triangular prism structure with a cross-section of a right triangle. The two sides of the right triangle corresponding to the right angle are called limiting surfaces, and the side corresponding to the hypotenuse is called a connecting surface. The connecting surface is connected to the telescopic end of the first telescopic drive device 211. Now, a preset path is set, and the angle between the preset path and the first plate and the second plate is 45°. During the process of the first telescopic drive device 211 driving the positioning corner block 212 to move outward along the preset path, when the right angle portion of the positioning corner block 212 abuts against the corner between the first plate and the second plate, the two limiting surfaces of the positioning corner block 212 will respectively fit against the inner sidewall of the first plate and the inner sidewall of the second plate, thereby simultaneously abutting and limiting the first plate and the second plate from the inside.

[0073] Based on the above principle, the first positioning mechanism 21 can be set to four, with each of the four first positioning mechanisms 21 corresponding to one of the four corner parts of the junction box. In this way, the four first telescopic drive devices 211 can drive the four positioning corner blocks 212 to abut against the four corner parts one by one, and with the abutment action of the second positioning mechanism 22 on the outside, the clamping and limiting effect of the four side plates of the junction box can be achieved.

[0074] In practical applications, when the workpiece to be welded is a sheet metal component other than a junction box, the number and shape of the positioning corner blocks 212 can be flexibly set according to the shape of the frame structure and the number of side plates to ensure that each positioning corner block 212 can be adapted to the corresponding corner part and simultaneously form a limiting effect on the two adjacent side plates. This will not be elaborated here.

[0075] Based on the positioning corner block 212 in this embodiment, the corner part that is more prone to size deviation and positional displacement during the welding process can be supported and limited in a more targeted manner, ensuring that the two adjacent side plates corresponding to the corner part can be welded normally to form an integrated structure, thereby improving the accuracy and quality of the workpiece after welding.

[0076] In one embodiment, refer to Figure 2 The positioning corner block 212 is provided with a cavity (not shown in the figure), which includes at least one of a concave cavity and a hole.

[0077] By setting a cavity in the positioning corner block 212, interference between the positioning corner block 212 and the corresponding device on the tooling platform 1 can be avoided during the movement of the positioning corner block 212 driven by the first telescopic drive device 211, and the weight of the positioning corner block 212 can be reduced at the same time.

[0078] In one embodiment, refer to Figure 2 The workpiece to be welded has a frame structure, the lower end face of the frame structure is placed on the tooling platform 1, and at least part of the frame structure constitutes the target side.

[0079] The auxiliary support mechanism 3 includes at least two auxiliary telescopic drive devices 31. The telescopic end of the auxiliary telescopic drive device 31 abuts against the inner periphery of the target side during the process of moving towards the outer periphery of the frame structure, and the telescopic end of the auxiliary telescopic drive device 31 separates from the inner periphery of the target side during the process of moving towards the inner periphery of the frame structure.

[0080] Specifically, taking an existing manifold box as an example, the manifold box includes a base plate and four side plates. The frame structure is formed by these four side plates, and the base plate is rectangular. The two side plates connected to the two long sides of the base plate constitute the target side. In the actual welding process, the manifold box can be placed on the tooling platform 1 with the base plate facing upwards, so that the lower end face of the frame structure is in contact with the placement surface of the tooling platform 1.

[0081] The auxiliary support mechanism 3 may include two auxiliary telescopic drive devices 31, which are respectively arranged to correspond to the two target sides of the junction box. Each auxiliary telescopic drive device 31 can extend or retract its telescopic end. It should be noted that the extension action of the telescopic end can be either outward or inward, and the retraction action can also be either outward or inward. The specific arrangement can be determined according to the orientation of the auxiliary telescopic drive devices 31, and is not limited here. When the two auxiliary telescopic drive devices 31 drive their telescopic ends to move outward, the two telescopic ends will abut against the inner sides of the two target sides respectively, thus providing support for the two target sides. This prevents the target sides from undergoing thermal shrinkage deformation inward during welding, thereby maintaining the dimensional accuracy and shape stability of the workpiece after welding. After welding, the two auxiliary telescopic drive devices 31 can drive their telescopic ends to move inward, so that the two telescopic ends separate from the corresponding target sides, facilitating the removal of the workpiece.

[0082] The auxiliary telescopic drive device 31 can be controlled by pneumatic, hydraulic, or electric drive. Preferably, the auxiliary telescopic drive device 31 is a cylinder, with the piston portion of the cylinder forming its telescopic end.

[0083] When the workpiece to be welded uses sheet metal components other than the junction box, the auxiliary telescopic drive device 31 can also be set at each target side of the workpiece to be welded in accordance with the above principle, which will not be elaborated here.

[0084] In one embodiment, refer to Figure 2 The frame structure is formed by multiple side panels, at least one of which is a deformable plate, and the deformable plate constitutes the side of the target.

[0085] The telescopic end of the auxiliary telescopic drive device 3 abuts against the inner wall of the deformable plate body during the process of moving towards the outer periphery of the frame structure, and the telescopic end of the auxiliary telescopic drive device 3 separates from the inner wall of the deformable plate body during the process of moving towards the inner periphery of the frame structure.

[0086] In this embodiment, taking the existing manifold box as an example, the manifold box includes a base plate and four side plates. The frame structure is formed by the four side plates. The base plate is rectangular, and the two side plates connected to the two long sides of the base plate are deformable plates. In the actual welding process, the manifold box can be placed on the tooling platform 1 with the base plate facing upwards, so that the lower end face of the frame structure is in contact with the placement surface of the tooling platform 1.

[0087] Two auxiliary telescopic drive devices 31 can be configured, with each device corresponding to one of the two deformable plates. Each device can extend or retract its telescopic end. It should be noted that the extension of the telescopic end can be either outward or inward, and the retraction can also be either outward or inward, depending on the arrangement of the auxiliary telescopic drive devices 31. When the two auxiliary telescopic drive devices 31 drive their telescopic ends to move towards the outer periphery of the frame structure, the two telescopic ends will abut against the inner walls of the two deformable plates, thus providing support for each plate and preventing inward thermal shrinkage during welding. This maintains the dimensional accuracy and shape stability of the workpiece after welding. After welding, the two auxiliary telescopic drive devices 31 can drive their telescopic ends to move towards the inner periphery of the frame structure, separating the telescopic ends from the corresponding deformable plates, facilitating the removal of the workpiece.

[0088] In one embodiment, refer to Figure 2 The positioning component 2 includes a pressing positioning mechanism 23; the pressing positioning mechanism 23 is used to press the workpiece to be welded onto the tooling platform 1 by abutting the upper side of the workpiece away from the tooling platform 1.

[0089] By setting up the pressing and positioning mechanism 23, the vertical freedom of movement of the workpiece to be welded can be restricted. The pressing and positioning mechanism 23 has at least two states: a locked state and an unlocked state. Switching between the locked and unlocked states can be done manually or automatically, for example, by hydraulic, pneumatic, or electric drive. In the locked state, the pressing and positioning mechanism 23 presses against the upper part of the workpiece to be welded; in the unlocked state, the pressing and positioning mechanism 23 separates from the upper part of the workpiece to be welded.

[0090] For example, taking the workpiece to be welded as an example using an existing manifold, the manifold is placed on the tooling platform 1 with the bottom plate facing upwards, and the pressing and positioning mechanism 23 can press against the bottom plate of the manifold in the locked state.

[0091] When the tooling platform 1 is simultaneously equipped with a first positioning mechanism 21, a second positioning mechanism 22, and a pressing positioning mechanism 23, the cooperation between the first positioning mechanism 21, the second positioning mechanism 22, and the pressing positioning mechanism 23 can restrict the various degrees of freedom of movement of the workpiece to be welded in the horizontal and vertical directions, thereby further improving the positional stability of the workpiece to be welded after it has been positioned on the tooling platform 1.

[0092] In a preferred embodiment, refer to Figure 2The workpiece to be welded has a frame structure, and each corner of the frame structure is provided with two pressing and positioning mechanisms 23. Specifically, taking an existing manifold box as an example, the manifold box includes a base plate and four side plates. The base plate is rectangular, and the four side plates are connected to the four sides of the base plate one by one, forming a frame structure. The four side plates can be sequentially referred to as the first plate, second plate, third plate, and fourth plate in a clockwise direction. A first corner is formed between one side of the first plate and one side of the second plate, a second corner is formed between the other side of the second plate and one side of the third plate, a third corner is formed between the other side of the third plate and one side of the fourth plate, and a fourth corner is formed between the other side of the fourth plate and the other side of the first plate. A pressing and positioning mechanism 23 is provided on each side of the first plate. One pressing and positioning mechanism 23 is used to press and fix the position of the first plate near the first corner, and the other pressing and positioning mechanism 23 is used to press and fix the position of the first plate near the fourth corner. A pressing and positioning mechanism 23 is provided on each side of the second plate. The positioning mechanism 23 is used to press and fix the position of the second plate near the first corner. Another pressing and positioning mechanism 23 is used to press and fix the position of the second plate near the second corner. A pressing and positioning mechanism 23 is provided on each side of the third plate. One pressing and positioning mechanism 23 is used to press and fix the position of the third plate near the second corner. Another pressing and positioning mechanism 23 is used to press and fix the position of the third plate near the third corner. A pressing and positioning mechanism 23 is provided on each side of the fourth plate. One pressing and positioning mechanism 23 is used to press and fix the position of the fourth plate near the third corner. Another pressing and positioning mechanism 23 is used to press and fix the position of the fourth plate near the fourth corner. Based on the above settings, a total of eight pressing and positioning mechanisms 23 are provided on the tooling platform 1. This can form a pressing effect on multiple different positions of the workpiece to be welded, thereby improving the positional stability of the workpiece on the tooling platform 1 during the welding process.

[0093] In one embodiment, refer to Figure 2 The pressing and positioning mechanism 23 includes a pneumatic rotary cylinder 231 and a pressing block 232, with the pressing block 232 connected to the movable part of the pneumatic rotary cylinder 231.

[0094] The pneumatic rotary cylinder 231 is used to drive the pressure block 232 to move in the vertical direction so that the pressure block 232 is close to or away from the upper part of the workpiece to be welded away from the tooling platform 1; and the pneumatic rotary cylinder 231 is used to drive the pressure block 232 to rotate around the vertical axis so that the pressure block 232 enters or exits the vertical projection area of ​​the workpiece to be welded.

[0095] Specifically, the movable part of the pneumatic rotary cylinder 231 (i.e., the piston part of the pneumatic rotary cylinder 231) has both a degree of freedom of movement and a degree of freedom of rotation. The movable part of the pneumatic rotary cylinder 231 is connected to the pressure block 232, so that the pressure block 232 can move downward in the vertical direction under the drive of the pneumatic rotary cylinder 231 to approach the upper part of the workpiece to be welded, thereby pressing and fixing the workpiece to be welded. After welding is completed, the pneumatic rotary cylinder 231 will drive the pressure block 232 to move upward in the vertical direction to separate it from the workpiece to be welded, and drive the pressure block 232 to rotate around the vertical axis, so that the pressure block 232 moves out from directly above the workpiece to be welded, that is, the pressure block 232 exits the vertical projection area of ​​the workpiece to be welded. This provides the necessary operating space for the removal of the workpiece to be welded, ensuring that the workpiece to be welded can be smoothly removed from the tooling platform 1 without interference.

[0096] In one embodiment, refer to Figure 2 The welding fixture also includes a reference positioning block 4, which is detachably connected to the fixture platform 1, and the workpiece to be welded is placed on the reference positioning block 4.

[0097] Specifically, the reference positioning block 4 provides a reliable positioning reference to ensure the accuracy of the position of the workpiece to be welded on the tooling platform 1. The reference positioning block 4 is detachably connected to the tooling platform 1, so that the reference positioning block 4 can be quickly adjusted or replaced according to different sizes and shapes of workpieces to be welded to adapt to different welding requirements.

[0098] The reference positioning block 4 typically has standardized positioning features, such as grooves, holes, or other geometries, which precisely match the corresponding parts on the workpiece to be welded. When the workpiece is placed on the reference positioning block 4, these matching features ensure that the workpiece is correctly aligned, thereby reducing potential positional deviations during welding and improving welding accuracy.

[0099] In one embodiment, refer to Figure 2 The reference positioning block 4 is provided with a positioning groove 41, the opening of the positioning groove 41 faces upward; the workpiece to be welded has a frame structure, the lower part of the frame structure is engaged in the positioning groove 41.

[0100] Specifically, taking an existing manifold as an example, the manifold includes a base plate and four side plates. The frame structure is formed by these four side plates, with the lower edges of the four side plates forming the lower part of the frame structure. Four reference positioning blocks 4 can be set on the tooling platform 1, and the positioning grooves 41 of the four reference positioning blocks 4 correspond one-to-one with the four side plates. In the actual welding process, the workpiece to be welded can be placed on the tooling platform 1 from top to bottom with the base plate facing upwards, so that the lower edges of the four side plates are engaged in the four positioning grooves 41 one-to-one. This achieves the initial positioning of the workpiece to be welded in a convenient way. Subsequently, the initially positioned workpiece to be welded can be fixed on the four reference positioning blocks 4 by the positioning component 2, thereby ensuring the positional accuracy of the workpiece to be welded during the welding process. The positioning grooves 41 can also be used to limit the position of the workpiece to be welded, preventing the workpiece to be welded from shifting due to external forces during the welding process.

[0101] This application also provides a junction box welding device; please refer to [link / reference]. Figure 2 The junction box welding equipment includes the welding fixtures in any of the above embodiments.

[0102] The specific structure of the welding fixture can be referred to in the above embodiments. Since this junction box welding equipment adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments. That is, a positioning component 2 and an auxiliary support mechanism 3 are integrated on the fixture platform 1. The positioning component 2 is used to securely fix the workpiece to be welded on the fixture platform 1, while the auxiliary support mechanism 3 is specifically designed for the target side of the workpiece that is prone to thermal shrinkage deformation during welding. The auxiliary support mechanism 3 can provide additional support and limitation for the target side. In this way, the supporting force applied by the auxiliary support mechanism 3 can offset the thermal shrinkage force caused by welding heat, avoiding large-scale thermal shrinkage deformation of the target side, effectively maintaining the dimensional accuracy and shape stability of the workpiece after welding. This allows the workpiece to meet the requirements in terms of size and shape immediately after welding, thereby eliminating the need for subsequent straightening processes. This shortens the operation time, improves production efficiency, and reduces production costs, providing an efficient and economical solution for the mass welding manufacturing of workpieces.

[0103] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A welding fixture, characterized in that, The welding fixture includes: Tooling platform, used to place workpieces to be welded; A positioning component is disposed on the tooling platform; the positioning component is used to abut against the workpiece to be welded to fix the workpiece to be welded on the tooling platform; An auxiliary support mechanism is provided on the tooling platform; the auxiliary support mechanism is used to abut against the target side of the workpiece to be welded in order to prevent the target side from deforming.

2. The welding fixture according to claim 1, characterized in that, The workpiece to be welded has a frame structure, and the lower end face of the frame structure is placed on the tooling platform. The positioning component includes a first positioning mechanism and a second positioning mechanism. The first positioning mechanism is used to abut against the inner periphery of the frame structure, and the second positioning mechanism is used to abut against the outer periphery of the frame structure.

3. The welding fixture according to claim 2, characterized in that, The frame structure is formed by enclosing multiple side panels; The first positioning mechanism includes at least two first telescopic drive devices; the telescopic end of each first telescopic drive device abuts against the inner wall of at least one of the side plates during the process of moving towards the outer periphery of the frame structure, and the telescopic end of each first telescopic drive device separates from the inner wall of at least one of the side plates during the process of moving towards the inner periphery of the frame structure. And / or, the second positioning mechanism includes at least two second telescopic drive devices; During the movement of each of the second telescopic drive devices toward the inner periphery of the frame structure, the telescopic end of each of the second telescopic drive devices abuts against the outer wall of at least one of the side plates, and during the movement of each of the second telescopic drive devices toward the outer periphery of the frame structure, the telescopic end of each of the second telescopic drive devices separates from the outer wall of at least one of the side plates.

4. The welding fixture according to claim 3, characterized in that, Any two adjacent side plates are referred to as the first plate and the second plate, respectively, and the angle between the first plate and the second plate forms a corner. The first positioning mechanism further includes a positioning corner block, which is connected to the telescopic end of the first telescopic drive device. When the telescopic end of the first telescopic drive device moves outward, the positioning corner block abuts against the corner portion, and the positioning corner block is respectively attached to the inner sidewall of the first plate and the inner sidewall of the second plate.

5. The welding fixture according to claim 4, characterized in that, The positioning corner block is provided with a cavity, which includes at least one of a concave cavity and a hole.

6. The welding fixture according to claim 1, characterized in that, The positioning component includes a pressing and positioning mechanism; the pressing and positioning mechanism is used to abut against the upper side of the workpiece to be welded away from the tooling platform, so as to press the workpiece to be welded onto the tooling platform; And / or, the welding fixture further includes a reference positioning block, which is detachably connected to the fixture platform; the reference positioning block is provided with a positioning groove with the opening facing upward; the workpiece to be welded has a frame structure, and the lower part of the frame structure is engaged in the positioning groove.

7. The welding fixture according to claim 6, characterized in that, The pressing and positioning mechanism includes a pneumatic rotary cylinder and a pressing block, wherein the pressing block is connected to the movable part of the pneumatic rotary cylinder; The pneumatic corner cylinder is used to drive the pressure block to move vertically, so that the pressure block is close to or away from the workpiece to be welded and away from the upper side of the tooling platform; and the pneumatic corner cylinder is used to drive the pressure block to rotate around the vertical axis, so that the pressure block enters or exits the vertical projection area of ​​the workpiece to be welded.

8. The welding fixture according to any one of claims 1 to 7, characterized in that, The workpiece to be welded has a frame structure, the lower end face of the frame structure is placed on the tooling platform, and at least part of the frame structure constitutes the target side. The auxiliary support mechanism includes at least two auxiliary telescopic drive devices. The telescopic end of the auxiliary telescopic drive device abuts against the inner periphery of the target side during the movement towards the outer periphery of the frame structure, and the telescopic end of the auxiliary telescopic drive device separates from the inner periphery of the target side during the movement towards the inner periphery of the frame structure.

9. The welding fixture according to claim 8, characterized in that, The frame structure is formed by enclosing multiple side panels, at least one of which is a deformable plate, and the deformable plate constitutes the target side. The telescopic end of the auxiliary telescopic drive device abuts against the inner wall of the deformable plate body during the process of moving towards the outer periphery of the frame structure, and the telescopic end of the auxiliary telescopic drive device separates from the inner wall of the deformable plate body during the process of moving towards the inner periphery of the frame structure.

10. A junction box welding device, characterized in that, The junction box welding equipment includes welding fixtures as described in any one of claims 1 to 9.

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