Tailor-welded blank

Abstract

The present application relates to the technical field of welding tooling, and provides a tailor-welding tooling. The tailor-welding tooling is used for assisting in tailor-welding a plurality of elongated workpieces into a tubular elongated assembly, and comprises a base, a plurality of lower dies arranged at intervals along the length direction of the base, an upper die corresponding to each of the lower dies, a support arranged between the lower die and the upper die, and a retaining portion for retaining the relative position of the upper die and the lower die; a limiting space is formed between each upper die and the corresponding lower die, and the limiting space can limit the external contour of the elongated assembly; the support is arranged inside the elongated assembly and can support at least part of the elongated workpieces to abut against the upper die; and the retaining portion is arranged on the base corresponding to each lower die. The tailor-welding tooling can keep the relative positions of the elongated workpieces, and the subsequent positioning welding can be directly welded, so that the elongated workpieces are better in shape accuracy and the welding quality of the elongated assembly is improved compared with welding the elongated workpieces two by two.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and in particular to a welding fixture for splicing. Background Technology

[0002] In production, it is sometimes necessary to weld multiple slender workpieces together to form a long, thin tubular assembly. The conventional method for this is to weld all the slender workpieces in pairs sequentially, ultimately forming a closed tube. However, when welding slender workpieces one by one in this way, the welding deformation of the previous workpiece becomes the assembly reference for the next. This recursive error accumulation is more pronounced under the influence of the thermal expansion and contraction characteristics of materials, resulting in lower dimensional accuracy of the welded slender assembly and hindering the improvement of welding quality. Summary of the Invention

[0003] In view of this, the present invention aims to provide a welding fixture to improve welding quality.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] A welding fixture for assisting in welding multiple slender workpieces into a tubular slender assembly includes a base, a plurality of lower dies spaced apart along the length of the base, an upper die corresponding to each of the lower dies, a support member disposed between the lower dies and the upper dies, and a holding part for maintaining the relative position of the upper dies and the lower dies.

[0006] Each of the upper molds and the corresponding lower molds forms a limiting space, which can restrict the external contour of the elongated component;

[0007] The support member is located inside the elongated component and is able to support at least a portion of the elongated workpiece abutting against the upper mold.

[0008] The base is provided with a retaining part corresponding to each of the lower molds.

[0009] Furthermore, the retaining part includes two mounting seats respectively disposed on both sides of the elongated workpiece, and a clamping assembly disposed on either of the mounting seats;

[0010] The mounting base is disposed on the base, and the clamping assembly can be driven to move to clamp the upper mold and the lower mold onto another mounting base.

[0011] Furthermore, the clamping assembly includes a screw threaded to and passing through the mounting base, and a pressure plate rotatably connected to the end of the screw thread;

[0012] The pressure plate can press the upper mold and the lower mold onto another mounting base.

[0013] Furthermore, the retaining part includes a limiting component disposed between the two mounting seats, which can limit the maximum height of the upper mold.

[0014] Furthermore, the limiting component includes a rod inserted through the two mounting seats and a limiting block placed between the rod and the upper mold.

[0015] Furthermore, the retaining part includes a mounting base disposed on the base, a limiting body hinged to the top of the mounting base, and a clamping assembly hinged to the free end of the limiting body;

[0016] The clamping assembly can be flipped to one side of the slender workpiece and, together with the mounting base, clamps the upper mold and the lower mold.

[0017] The limiting body can restrict the maximum height of the upper mold.

[0018] Furthermore, the clamping assembly includes a connecting body hinged to the limiting body, a pressure plate slidably disposed on the connecting body in a first direction, and a slider slidably disposed on the connecting body in a second direction.

[0019] The base is provided with a limiting hole, and the free end of the connector is provided with a limiting rod that can pass through the limiting hole. The first direction is perpendicular to the second direction.

[0020] The slider has a protrusion. Sliding the slider can push the pressure plate through the protrusion, so that the pressure plate presses the upper mold and the lower mold together.

[0021] Furthermore, a guide rod is fixedly connected to the pressure plate, and the guide rod passes through the connecting body;

[0022] An elastic element is provided between the guide rod and the connecting body. The pressure plate is pushed and moved by the protrusion. The elastic element stores energy and releases energy, and the pressure plate moves toward the connecting body.

[0023] Furthermore, the retaining part includes a synchronizing rod that is screwed to each of the sliders, and each of the connecting bodies is provided with a rotating support. The synchronizing rod is rotatably connected to all the rotating supports.

[0024] Furthermore, the support member includes a rod and support plates spaced apart on the rod;

[0025] The rod extends through each limiting space, and each limiting space contains at least one support plate, which can support the slender workpiece.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) The welding fixture described in this invention can form the shape of a slender component by setting an upper mold and a lower mold. At the same time, the support member is used to firmly support the slender workpiece in the upper mold and the lower mold. Then, the holding part is used to hold the position of the upper mold and the lower mold, so that each slender workpiece can maintain its relative position to each other. When performing tack welding, it can be welded directly. Compared with welding the slender workpieces one by one, it has better shape accuracy and is conducive to improving the welding quality of the slender component.

[0028] (2) Two mounting bases are provided to provide space for accommodating the upper mold, lower mold, support and slender workpiece. A clamping component is set on one of the mounting bases to clamp the upper mold, lower mold, support and slender workpiece as a whole onto the other mounting base, and the clamping effect is stable.

[0029] (3) By setting a screw with a rotatable pressure plate, tightening the screw can make the pressure plate press the upper and lower molds onto the mounting base, which is convenient to operate, and the screw is not easy to loosen due to the self-locking property of the thread.

[0030] (4) The limiting component can limit the maximum height of the upper mold, making the shape of the slender workpiece more accurate in the height direction.

[0031] (5) The structure is simple and reliable, and has good limiting accuracy. It adopts the form of insert rod and limit block.

[0032] (6) A mounting base is set on the base, and the limiting body and the clamping component are connected end to end in sequence. It can be wrapped around the outside of the slender component by flipping, and the upper and lower molds are simultaneously limited. After the slender component is welded, the limiting body and the clamping component can be flipped to unfold and the slender component can be taken out. The operation is simple and conducive to improving work efficiency.

[0033] (7) By using the limiting rod set on the connecting body, after the limiting rod is inserted into the limiting hole, the pressing component presses the upper mold and the lower mold. The limiting rod will press against the hole wall of the limiting hole under the reaction force of the connecting body, so that the limiting rod will not leave the limiting hole under the action of friction, and the connecting body and the base will remain connected. By moving the slider, the protrusion can lift the pressure plate, so that the pressure plate can stably press the upper mold and the lower mold.

[0034] (8) Setting a guide rod can make the sliding direction of the pressure plate relative to the connecting body more accurate. At the same time, through the action of the elastic element, the pressure plate can be retracted to the connecting body when it is not pushed by the protrusion, so as to connect the connecting body to the base or detach it from the base.

[0035] (9) A synchronizing rod is set up. Only by operating the synchronizing rod to rotate, the sliding of each slider can be controlled synchronously, thereby enabling each pressure plate to press the upper and lower molds together. The operation is simple and conducive to improving work efficiency.

[0036] (10) The support plate can support the slender workpiece well, and its own weight is also small, making it easy to operate. The rod can connect all the support plates together, so that the operator can pull each support plate at the same time to find the corresponding position of the support plate with the upper and lower molds. Attached Figure Description

[0037] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0038] Figure 1 This is a schematic diagram of the overall structure of the welding fixture described in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the support member according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram illustrating the splicing method of the slender components described in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the overall structure of another welding fixture described in an embodiment of the present invention;

[0042] Figure 5 This is a partial structural schematic diagram of the clamping assembly described in an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of the base described in an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the overall structure of the clamping assembly described in an embodiment of the present invention;

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Base; 101. Limiting hole;

[0047] 2. Lower mold;

[0048] 3. Upper mold;

[0049] 4. Support components; 401. Rod body; 402. Support plate;

[0050] 5. Holding part;

[0051] 501. Mounting bracket;

[0052] 502, Clamping assembly; 5021, Screw; 5022, Pressure plate; 5023, Connector; 5024, Pressure plate; 50241, Elastic layer; 50242, Protruding plate; 5025, Slider; 50251, Protrusion; 5026, Limiting rod; 5027, Guide rod; 5028, Elastic element;

[0053] 503, Limiting component; 5031, Insert rod; 5032, Limiting block;

[0054] 504. Limiting body; 505. Synchronizing rod; 506. Rotating support;

[0055] 6. Slender components; 601. Slender workpieces;

[0056] 7. Handwheel. Detailed Implementation

[0057] To make the technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0058] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0059] Furthermore, in the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0061] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0063] An embodiment of the first aspect of the present invention provides a welding fixture for assisting in the welding of multiple slender workpieces into a tubular slender assembly, thereby improving welding quality.

[0064] In production, it is sometimes necessary to weld multiple slender workpieces together to form a slender tubular assembly. In this case, the conventional production method in the prior art is to weld all the slender workpieces in pairs sequentially, ultimately forming a closed tube. However, when welding slender workpieces one by one in this way, the welding deformation of the previous slender workpiece becomes the assembly reference for the next. This recursive error accumulation is more pronounced under the influence of the thermal expansion and contraction characteristics of materials, resulting in lower dimensional accuracy of the welded slender assembly and hindering the improvement of welding quality.

[0065] In view of this, in order to overcome the shortcomings of the prior art, the welding fixture in this embodiment combines... Figures 1 to 3 As shown, the overall design includes a base 1, multiple lower molds 2 spaced apart along the length of the base 1, upper molds 3 corresponding to the lower molds 2 one by one, a support member 4 disposed between the lower molds 2 and the upper molds 3, and a retaining part 5 for maintaining the relative position of the upper molds 3 and the lower molds 2.

[0066] Each upper mold 3 and its corresponding lower mold 2 form a limiting space, which restricts the external contour of the elongated component 6. A support member 4 is located inside the elongated component 6 and supports at least a portion of the elongated workpiece 601 abutting against the upper mold 3. A retaining part 5 is provided on the base 1 corresponding to each lower mold 2.

[0067] Therefore, by setting the upper mold 3 and the lower mold 2, the shape of the slender component 6 can be formed. At the same time, the support member 4 is used to firmly support the slender workpiece 601 in the upper mold 3 and the lower mold 2. Then, the holding part 5 is used to hold the position of the upper mold 3 and the lower mold 2, so that the relative positions of each slender workpiece 601 can be maintained. Welding can be carried out directly during subsequent positioning welding. Compared with welding the slender workpieces 601 one by one, it has better shape accuracy and is conducive to improving the welding quality of the slender component 6.

[0068] Based on the above overall introduction, and still combined with Figures 1 to 3 As shown, taking the slide main beam of the rock drill robotic arm as an example, the slender component 6 in this embodiment is composed of four slender workpieces 601. After being fixed using welding fixtures, they are welded into a whole slender component 6 by tack welding. Subsequently, the gaps between each slender workpiece 601 are completely welded. In this embodiment, there are five upper molds 3, which are evenly spaced on the base 1. At the same time, there are also five corresponding upper molds 3 and holding parts 5.

[0069] The retaining part 5 includes two mounting seats 501 respectively disposed on both sides of the elongated workpiece 601, and a clamping assembly 502 disposed on either mounting seat 501. The mounting seat 501 is disposed on the base 1, and the clamping assembly 502 can be driven to move to clamp the upper mold 3 and the lower mold 2 onto the other mounting seat 501. The two mounting seats 501 provide space to accommodate the upper mold 3, the lower mold 2, the support member 4, and the elongated workpiece 601. The clamping assembly 502 disposed on one mounting seat 501 can clamp the entire assembly of the upper mold 3, the lower mold 2, the support member 4, and the elongated workpiece 601 onto the other mounting seat 501, resulting in a stable clamping effect. In this embodiment, the two mounting seats 501 are welded to the base 1.

[0070] Specifically, the clamping assembly 502 includes a screw 5021 screwed into and passing through the mounting base 501, and a pressure plate 5022 rotatably connected to the end of the screw 5021. The pressure plate 5022 can clamp the upper mold 3 and the lower mold 2 onto another mounting base 501. By providing a screw 5021 with a rotatable pressure plate 5022, tightening the screw 5021 allows the pressure plate 5022 to clamp the upper mold 3 and the lower mold 2 onto the mounting base 501, which is convenient to operate, and due to the self-locking property of the thread, the screw 5021 is not easy to loosen. For example, the pressure plate 5022 is circular, and the upper mold 3 and the lower mold 2 have equal widths. After tightening the screw 5021, the pressure plate 5022 simultaneously pushes the upper mold 3 and the lower mold 2 to clamp them onto the mounting base 501. The screw 5021 has a disc-shaped handle at one end on the outside of the mounting base 501, which facilitates the operator to tighten the screw 5021.

[0071] Secondly, the retaining part 5 includes a limiting component 503, which is disposed between the two mounting seats 501 and can limit the maximum height of the upper mold 3. The limiting component 503 can limit the maximum height of the upper mold 3, so that the shape of the slender workpiece 601 in the height direction is more accurate.

[0072] Furthermore, the limiting component 503 includes a rod 5031 passing through the two mounting bases 501, and a limiting block 5032 placed between the rod 5031 and the upper mold 3. The use of the rod 5031 and the limiting block 5032 results in a simple and reliable structure with good limiting accuracy. In this embodiment, one end of the rod 5031 has an enlarged diameter for easier handheld operation. The limiting block 5032 is a rectangular iron block placed on top of the upper mold 3 and in contact with the rod 5031, preventing the upper mold 3 from moving upwards when it tends to do so.

[0073] Furthermore, regarding the specific structure of the support member 4, in this embodiment, the support member 4 includes a rod 401 and support plates 402 spaced apart on the rod 401. The rod 401 passes through each limiting space, and each limiting space contains at least one support plate 402, which can support the slender workpiece 601. The support plate 402 can support the slender workpiece 601 well, and its own weight is also small, making it easy to operate. The rod 401 can connect all the support plates 402 together, so that the operator can pull each support plate 402 at the same time to align the support plate 402 with the corresponding positions of the upper mold 3 and the lower mold 2.

[0074] In practice, the clamping assembly 502 is pre-installed on the mounting base 501. First, the lower mold 2 is placed between the two mounting bases 501. Then, each slender workpiece 601 and the support 4 are installed. Next, the upper mold 3 is fastened onto the top slender workpiece 601. The screw 5021 is tightened so that the pressure plate 5024 presses the upper mold 3 and the lower mold 2. Then, the limiting block 5032 is placed on the top of the upper mold 3. Finally, the insert rod 5031 is inserted to block the top of the limiting block 5032. Then, positioning welding is performed to weld the slender workpieces into a slender assembly.

[0075] The welding fixture in this embodiment, by setting the upper mold 3 and the lower mold 2, can shape the slender component 6. At the same time, the support member 4 is used to firmly support the slender workpiece 601 in the upper mold 3 and the lower mold 2. Then, the holding part 5 is used to hold the position of the upper mold 3 and the lower mold 2, so that the relative positions of each slender workpiece 601 can be maintained. Welding can be performed directly during subsequent positioning welding. Compared with welding the slender workpieces 601 one by one, it has better shape accuracy and is conducive to improving the welding quality of the slender component 6.

[0076] A second aspect of the present invention also provides a welding fixture, which differs from the welding fixture of the first aspect as follows:

[0077] Reference Figures 2 to 7 As shown, the holding part 5 includes a mounting base 501 provided on the base 1, a limiting body 504 hinged to the top of the mounting base 501, and a clamping assembly 502 hinged to the free end of the limiting body 504. The clamping assembly 502 can be flipped to one side of the elongated workpiece 601 and, together with the mounting base 501, clamps the upper mold 3 and the lower mold 2. The limiting body 504 can limit the maximum height of the upper mold 3. In this embodiment, the lower mold 2 is welded to the base 1. By providing the mounting base 501 on the base 1 and sequentially connecting the limiting body 504 and the clamping assembly 502 end to end, it can be flipped to wrap around the outside of the elongated component 6, simultaneously limiting the upper mold 3 and the lower mold 2. After the elongated component 6 is welded, the limiting body 504 and the clamping assembly 502 can be flipped to unfold and the elongated component 6 can be removed. The operation is simple and helps to improve work efficiency.

[0078] Secondly, the clamping assembly 502 in this embodiment includes a connecting body 5023 hinged to the limiting body 504, a pressure plate 5024 slidably disposed on the connecting body 5023 in a first direction, and a slider 5025 slidably disposed on the connecting body 5023 in a second direction. The base 1 is provided with a limiting hole 101, and the free end of the connecting body 5023 is provided with a limiting rod 5026 that can pass through the limiting hole 101, with the first direction perpendicular to the second direction. The slider 5025 is provided with a protrusion 50251, and the sliding slider 5025 can push the pressure plate 5024 through the protrusion 50251, so that the pressure plate 5024 clamps the upper mold 3 and the lower mold 2. With the limiting rod 5026 provided on the connecting body 5023, after the limiting rod 5026 is inserted into the limiting hole 101, the clamping assembly 502 clamps the upper mold 3 and the lower mold 2. The limiting rod 5026 will press against the hole wall of the limiting hole 101 under the reaction force of the connecting body 5023, so that the limiting rod 5026 will not detach from the limiting hole 101 under the action of friction. The connecting body 5023 and the base 1 remain connected. By moving the slider 5025, the protrusion 50251 can lift the pressure plate 5024, so that the pressure plate 5024 stably clamps the upper mold 3 and the lower mold 2.

[0079] For details, please refer to Figure 4 , Figure 5 and Figure 7In this embodiment, the first direction is the direction away from the connecting body 5023 of the pressure plate 5024, and the second direction is the length direction of the slender workpiece 601. An elastic layer 50241 is provided on the side of the pressure plate 5024 facing the upper mold 3. When the pressure plate 5024 presses against the upper mold 3 and the lower mold 2, the elastic layer 50241 can increase the contact area between the pressure plate 5024 and the upper mold 3 and the lower mold 2, making it less likely for the pressure plate 5024 to damage the upper mold 3 and the lower mold 2. The elastic layer 50241 can be made of rubber. A wear-resistant convex plate 50242 is provided on the side of the pressure plate 5024 away from the upper mold 3. The convex plate 50242 has a plane that contacts the slider 5025 and has rounded corners at its edges so that the protrusion 50251 of the slider 5025 can rub against this plane. The limiting body 504 is plate-shaped with a protrusion in the middle, and can limit the maximum height of the upper mold 3 by contacting the upper mold 3 with the protrusion.

[0080] Meanwhile, for the specific forms of the limiting rod 5026 and the limiting hole 101, refer to Figure 6 and Figure 7 As shown, three limiting rods 5026 are provided at the bottom of the connecting body 5023, and the limiting rods 5026 are cylindrical rods. The limiting hole 101 is an oblong hole. When the clamping assembly 502 clamps the upper mold 3 and the lower part, the limiting rods 5026 can abut against the arc-shaped hole wall of the limiting hole 101 on the side away from the mounting base 501.

[0081] Furthermore, in this embodiment, a guide rod 5027 is fixedly connected to the pressure plate 5024, and the guide rod 5027 passes through the connecting body 5023. An elastic element 5028 is provided between the guide rod 5027 and the connecting body 5023. When the pressure plate 5024 is pushed and moved by the protrusion 50251, the elastic element 5028 stores energy and releases energy, causing the pressure plate 5024 to move towards the connecting body 5023. The guide rod 5027 allows for more accurate sliding of the pressure plate 5024 relative to the connecting body 5023. At the same time, through the action of the elastic element 5028, the pressure plate 5024 can retract towards the connecting body 5023 when not pushed by the protrusion 50251, facilitating the connection of the connecting body 5023 to or from the base 1.

[0082] In detail, in this embodiment, each pressure plate 5024 is fixedly connected to two guide rods 5027, and the elastic element 5028 is a spring, which is sleeved on the guide rod 5027. The end of the guide rod 5027 away from the pressure plate 5024 is provided with an anti-detachment part with a larger diameter. One end of the spring abuts against the outer wall of the connector, and the other end abuts against the anti-detachment part.

[0083] Meanwhile, the retaining part 5 in this embodiment includes a synchronizing rod 505 screwed to each slider 5025, and each connecting body 5023 is provided with a rotating support 506. The synchronizing rod 505 is rotatably connected to all rotating supports 506. By setting the synchronizing rod 505, the sliding of each slider 5025 can be synchronously controlled by operating the rotation of the synchronizing rod 505, thereby enabling each pressure plate 5024 to press the upper mold 3 and the lower mold 2 together. The operation is simple and conducive to improving work efficiency.

[0084] Specifically, the synchronizing rod 505 has five threaded sections, each screwed to the slider 5025. The diameter of the threaded sections is larger than the unthreaded portion of the synchronizing rod 505. A handwheel 7 is fixed to the end of the synchronizing rod 505, allowing the operator to easily rotate it. Correspondingly, all connecting parts are integrated due to the connection between the rotating support 506 and the synchronizing rod 505; flipping any connecting part 5023 will cause all other connecting parts 5023 to flip synchronously.

[0085] In this embodiment of the welding fixture, when in use, first lift the limiting body 504 and the clamping component 502, place the slender workpiece 601 and the support 4 on the lower mold 2, then fasten the upper mold 3 on the slender workpiece 601, flip the limiting body 504 and the clamping component 502, insert the limiting rod 5026 into the limiting hole 101, and the limiting body 504 abuts against the upper mold 3. Twist the synchronizing rod 505 so that the slider 5025 slides until its protrusion 50251 abuts against the protrusion 50242, and the pressure plate 5024 can press the upper mold 3 and the lower mold 2 onto the mounting base 501. Then, perform positioning welding to weld the slender workpiece into a slender component.

[0086] Similarly, the welding fixture in this embodiment can form the shape of the slender component 6 by setting the upper mold 3 and the lower mold 2. At the same time, the support member 4 is used to firmly support the slender workpiece 601 in the upper mold 3 and the lower mold 2. Then, the holding part 5 is used to hold the position of the upper mold 3 and the lower mold 2, so that the relative positions of each slender workpiece 601 can be maintained. Welding can be carried out directly during subsequent positioning welding. Compared with welding the slender workpieces 601 one by one, it has better shape accuracy and is conducive to improving the welding quality of the slender component 6.

[0087] The above descriptions are merely some embodiments of the present invention and are not intended to limit the present invention. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A welding fixture for assisting in welding multiple slender workpieces (601) into a tubular slender assembly (6), characterized in that: It includes a base (1), a plurality of lower molds (2) spaced apart along the length of the base (1), an upper mold (3) corresponding to each of the lower molds (2), a support member (4) disposed between the lower molds (2) and the upper molds (3), and a holding part (5) for maintaining the relative position of the upper molds (3) and the lower molds (2). Each of the upper molds (3) and the corresponding lower molds (2) forms a limiting space, which can restrict the external contour of the elongated component (6); The support member (4) is located inside the elongated component (6) and is able to support at least part of the elongated workpiece (601) to abut against the upper mold (3); The base (1) is provided with the retaining part (5) corresponding to each of the lower molds (2); The retaining part (5) includes a mounting base (501) provided on the base (1), a limiting body (504) hinged to the top of the mounting base (501), and a clamping assembly (502) hinged to the free end of the limiting body (504). The clamping assembly (502) can be flipped to one side of the elongated workpiece (601) and together with the mounting base (501) clamp the upper mold (3) and the lower mold (2). The limiting body (504) can limit the maximum height of the upper mold (3); The clamping assembly (502) includes a connector (5023) hinged to the limiting body (504), a pressure plate (5024) slidably disposed on the connector (5023) in a first direction, and a slider (5025) slidably disposed on the connector (5023) in a second direction. The base (1) is provided with a limiting hole (101), and the free end of the connector (5023) is provided with a limiting rod (5026) that can pass through the limiting hole (101). The first direction is perpendicular to the second direction. The slider (5025) is provided with a protrusion (50251). Sliding the slider (5025) can push the pressure plate (5024) through the protrusion (50251) so that the pressure plate (5024) presses the upper mold (3) and the lower mold (2).

2. The welding fixture according to claim 1, characterized in that: A guide rod (5027) is fixedly connected to the pressure plate (5024), and the guide rod (5027) passes through the connector (5023). An elastic element (5028) is provided between the guide rod (5027) and the connecting body (5023). The pressure plate (5024) is pushed and moved by the protrusion (50251). The elastic element (5028) stores energy and releases energy. The pressure plate (5024) moves toward the connecting body (5023).

3. The welding fixture according to claim 2, characterized in that: The retaining part (5) includes a synchronizing rod (505) that is screwed to each of the sliders (5025), and each of the connecting bodies (5023) is provided with a rotating support (506). The synchronizing rod (505) is rotatably connected to all the rotating supports (506).

4. The welding fixture according to any one of claims 1 to 3, characterized in that: The support member (4) includes a rod (401) and a support plate (402) spaced apart on the rod (401). The rod (401) passes through each limiting space, and each limiting space has at least one support plate (402), which can support the slender workpiece (601).

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