Adjustable spot welding protection device

Abstract

The utility model discloses an adjustable spot welding protection device, and belongs to the technical field of spot welding. The device comprises a bottom plate, a first clamping assembly and a second clamping assembly. Through cooperation of the sliding strip-shaped groove, the first clamping assembly and the fastening piece, the axial fixing face of the welding piece can be clamped in an adjustable mode. And through cooperation of the second clamping assembly, the limiting strip-shaped groove and the fastening piece, the transverse fixing face of the welding piece can be clamped in an adjustable mode. Meanwhile, a pushing screw is arranged on the first clamping assembly, so that the clamping length of the protection device is extended; the pushing screw is arranged on the second clamping assembly, and the clamping width of the protection device is extended, so that the transverse fixing face of the welding piece is clamped, deformation caused by welding is effectively controlled, and the welding device adapts to the variability of the shape of the welding piece.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding, in particular to an adjustable spot welding protective device. Background Art

[0002] Spot welding is a welding technique that uses a cylindrical electrode to form a weld between the contact surfaces of two overlapping workpieces. During the spot welding process, the workpieces are first brought into close contact by applying pressure, and then the current is turned on. Under the action of resistance heat, the contact between the workpieces melts rapidly and forms a solid weld after cooling. This welding method is particularly suitable for welding thin plate components and stampings with a thickness of less than 4 mm, and has been widely used in the manufacture of automobile bodies, carriages and aircraft fuselages.

[0003] During the welding process, the metal in the welding area will expand due to heat, but it is constrained by the surrounding unheated metal, thus generating compressive stress inside the welding area. When welding is completed, as the metal cools and contracts, tensile stress will form in the weld area due to the constraint of the surrounding metal. This constant change in stress is the main cause of welding deformation. Traditional welding modes often face problems such as large thermal deformation and difficult to control dimensional tolerances. At the same time, in the use of previous welding devices, the welded parts need to be clamped and fixed, and the fixture cannot adjust the position of the welded parts during use, resulting in the welding device being able to weld only the same position of the welded parts, and the fixture cannot be moved to weld the objects in multiple positions, making it difficult to use and having low welding efficiency.

[0004] In order to effectively control welding deformation, it is particularly important to use fixtures and tools to fix and constrain welded parts. These fixtures and tools can not only provide stable support for welded parts during welding to prevent them from excessive deformation, but also help to achieve uniform stress distribution. For example, when processing long welds, a tensioning device can be used to fix the welded parts in a predetermined position to reduce the bending and twisting deformation that may occur during welding.

[0005] Therefore, how to effectively control the deformation caused by welding and adapt to the variability of the shape of welded parts has become a technical problem that technical personnel in this field urgently need to overcome. Summary of the invention

[0006] The utility model aims to provide an adjustable spot welding protection device to overcome the deformation problem caused by the welding process in the prior art.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] An adjustable spot welding protection device comprises a base plate, a first clamping assembly and a second clamping assembly; the base plate is provided with a limiting strip groove and a fastener penetrating the base plate; the first clamping assembly and the second clamping assembly are L-shaped structures and are arranged in pairs, the vertical part of the first clamping assembly is close to the axial fixing surface of the welding part, and the vertical part of the second clamping assembly is close to the transverse fixing surface of the welding part; the horizontal part of the first clamping assembly is provided with a sliding strip groove parallel to the transverse fixing surface, the fastener passes through the sliding strip groove to fix the horizontal part of the first clamping assembly on the base plate, and the horizontal part of the second clamping assembly is fixed to the limiting strip groove through the fastener.

[0009] Furthermore, the fastener is a bolt.

[0010] Further, the vertical portion of the first clamping assembly is provided with a push screw.

[0011] Further, the vertical portion of the second clamping assembly is provided with a push screw.

[0012] Furthermore, there are one or more advancement screws.

[0013] Furthermore, there are one or more sliding strip grooves.

[0014] Furthermore, there are one or more fasteners on each sliding strip groove.

[0015] Furthermore, there are one or more fasteners on the second clamping assembly.

[0016] Further, the first clamping assemblies are provided as a pair, and the second clamping assemblies are provided as two pairs.

[0017] Furthermore, a hole is provided at the center of the bottom plate for placing the welding piece and the auxiliary pad; the auxiliary pad is used to support the welding piece.

[0018] Compared with the prior art, the positive and progressive effects of the utility model are:

[0019] The utility model provides an adjustable spot welding protection device, comprising a base plate, a first clamping assembly and a second clamping assembly; through the cooperation of a sliding strip groove, the first clamping assembly and a fastener, that is, a horizontal part of the first clamping assembly is provided with a sliding strip groove parallel to a transverse fixing surface, and the fastener passes through the sliding strip groove to fix the horizontal part of the first clamping assembly on the base plate, thereby realizing an adjustable clamping weldment axial fixing surface; through the cooperation of the second clamping assembly, a limiting strip groove and the fastener, that is, the horizontal part of the second clamping assembly is fixed on the limiting strip groove by the fastener, thereby realizing an adjustable clamping weldment transverse fixing surface, thereby effectively controlling the deformation caused by welding and adapting to the variability of the shape of the weldment.

[0020] Furthermore, by arranging a push screw on the first clamping assembly, when the clampable length of the first clamping assembly is insufficient, the clampable length of the protective device is extended, thereby clamping the axial fixing surface of the weldment.

[0021] Furthermore, by arranging a push screw on the second clamping assembly, when the clampable width of the second clamping assembly is insufficient, the clampable width of the protective device is extended, thereby clamping the transverse fixing surface of the weldment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a diagram of the use state of the utility model;

[0025] Figure 3 is a schematic diagram of the structure of the welding part described in the embodiment;

[0026] Figure 4 It is a bottom schematic diagram of the utility model;

[0027] Figure 5 It is a bottom view of the utility model.

[0028] Among them, 1 is a base plate, 2 is a first clamping assembly, 2-1 is a horizontal portion of the first clamping assembly, 2-2 is a vertical portion of the first clamping assembly, 3 is a second clamping assembly, 3-1 is a horizontal portion of the second clamping assembly, 3-2 is a vertical portion of the second clamping assembly, 4 is a limiting strip groove, 5 is a fastener, 6 is a sliding strip groove, 7 is a push screw, 8 is a hole, 9 is an auxiliary pad, 10 is an axial fixing surface, and 11 is a transverse fixing surface. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] The implementation methods of the utility model are described in further detail below:

[0036] An adjustable spot welding protection device comprises a base plate 1, a first clamping assembly 2 and a second clamping assembly 3; the base plate 1 is provided with a limiting strip groove 4 and a fastener 5 which penetrate the base plate 1; the first clamping assembly 2 and the second clamping assembly 3 are L-shaped structures and are arranged in pairs, the vertical portion 2-2 of the first clamping assembly is close to the axial fixing surface 10 of the weldment, and the vertical portion 3-2 of the second clamping assembly is close to the transverse fixing surface 11 of the weldment; the horizontal portion 2-1 of the first clamping assembly is provided with a sliding strip groove 6 which is parallel to the transverse fixing surface 11, the fastener 5 passes through the sliding strip groove 6 to fix the horizontal portion 2-1 of the first clamping assembly on the base plate 1, and the horizontal portion 3-1 of the second clamping assembly is fixed to the limiting strip groove 4 through the fastener 5.

[0037] Optionally, the fastener 5 is a bolt.

[0038] Optionally, the vertical portion 2 - 2 of the first clamping assembly is provided with a driving screw 7 .

[0039] Optionally, the vertical portion 3 - 2 of the second clamping assembly is provided with a push screw 7 .

[0040] Optionally, there are one or more advancement screws 7.

[0041] Optionally, there are one or more sliding strip grooves 6.

[0042] Optionally, there are one or more fasteners 5 on each sliding strip groove 6 .

[0043] Optionally, there are one or more fasteners 5 on the second clamping assembly 3 .

[0044] Optionally, the first clamping assemblies 2 are provided as a pair, and the second clamping assemblies 3 are provided as two pairs.

[0045] Optionally, a hole 8 is provided at the center of the base plate 1 for placing a welding piece and an auxiliary pad 9; the auxiliary pad 9 is used to support the welding piece.

[0046] The present invention is further described in detail below in conjunction with the embodiments:

[0047] See also Figure 1 The overall structural diagram of an adjustable spot welding protection device includes a base plate 1, a first clamping assembly 2 and a second clamping assembly 3; the base plate 1 is provided with two limiting strip grooves 4 penetrating the base plate 1 and twelve bolts, of which four bolts are used to fix the first clamping assembly 2, and eight bolts are used to fix the second clamping assembly; the first clamping assembly 2 and the second clamping assembly 3 are L-shaped structures, both of which are arranged in pairs, the first clamping assembly 2 is arranged in one pair, and the second clamping assembly 3 is arranged in two pairs;

[0048] See also Figure 2 , the use state diagram of the utility model, Figure 3 It is a schematic diagram of the structure of the welding part. When in use, the vertical part 2-2 of the first clamping assembly is close to the axial fixing surface 10 of the welding part, and the vertical part 3-2 of the second clamping assembly is close to the transverse fixing surface 11 of the welding part; the horizontal part 2-1 of each first clamping assembly is provided with two sliding strip grooves 6 parallel to the transverse fixing surface 11, and two bolts pass through the two sliding strip grooves 6 to fix the horizontal part 2-1 of a first clamping assembly to the base plate 1, and the horizontal part 3-1 of each second clamping assembly is fixed to the limiting strip groove 4 by two bolts.

[0049] The vertical portion of the first clamping assembly is provided with two push screws 7 evenly distributed on the central transverse axis; the vertical portion of the second clamping assembly is provided with two push screws 7 evenly distributed on the central longitudinal axis.

[0050] A hole 8 is provided at the center of the bottom plate 1 for placing welding parts and auxiliary pads 9; the auxiliary pads 9 are used to support the welding parts.

[0051] See also Figure 4 Bottom diagram and Figure 5 In the bottom view, the limiting strip groove 4 passes through the bottom plate, and the bolts fixing the first clamping assembly 2 are fixed on the bottom plate 1 and cannot be adjusted. The sliding strip groove is required for adjustment; and the second clamping assembly 3 can be moved and adjusted on the limiting strip groove 4 by the bolts fixing it, so as to realize the lateral fixing surface 11 of the clamped weldment. In addition, when the width of the weldment is too narrow and the second clamping assembly does not match the width of the weldment, the width can be extended by the push screw set on the vertical part 3-2 of the second clamping assembly, so as to realize the axial fixing surface 10 of the clamped weldment.

[0052] When the length of the weldment is too long and needs to be adjusted, the first clamping assembly is slid outward using the sliding strip groove to adjust the distance to match the length of the weldment. When the length of the weldment is too short and the first clamping assembly is slid inward to the limit position using the sliding strip groove and still does not match the length of the weldment, the length of the push screw set on the vertical part 2-2 of the first clamping assembly can be extended to achieve clamping the axial fixing surface 10 of the weldment.

[0053] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. An adjustable spot welding protection device, characterized in that: It comprises a base plate (1), a first clamping assembly (2) and a second clamping assembly (3); The bottom plate (1) is provided with a limiting strip groove (4) and a fastener (5) penetrating the bottom plate (1); The first clamping assembly (2) and the second clamping assembly (3) are L-shaped structures and are arranged in pairs, the vertical portion (2-2) of the first clamping assembly is in close contact with the axial fixing surface (10) of the weldment, and the vertical portion (3-2) of the second clamping assembly is in close contact with the transverse fixing surface (11) of the weldment; The horizontal portion (2-1) of the first clamping assembly is provided with a sliding strip groove (6) parallel to the transverse fixing surface (11); the fastener (5) passes through the sliding strip groove (6) to fix the horizontal portion (2-1) of the first clamping assembly to the base plate (1); and the horizontal portion (3-1) of the second clamping assembly is fixed to the limiting strip groove (4) via the fastener (5).

2. The adjustable spot welding protection device according to claim 1, characterized in that: The fastener (5) is a bolt.

3. The adjustable spot welding protection device according to claim 1, characterized in that: The vertical portion (2-2) of the first clamping assembly is provided with a driving screw (7).

4. The adjustable spot welding protection device according to claim 1, characterized in that: The vertical portion (3-2) of the second clamping assembly is provided with a driving screw (7).

5. An adjustable spot welding protection device according to any one of claims 3 or 4, characterized in that: The number of the advancement screws (7) is one or more.

6. The adjustable spot welding protection device according to claim 1, characterized in that: The number of the sliding strip grooves (6) is one or more.

7. The adjustable spot welding protection device according to claim 6, characterized in that: There are one or more fasteners (5) on each sliding strip groove (6).

8. The adjustable spot welding protection device according to claim 1, characterized in that: There are one or more fasteners (5) on the second clamping assembly (3).

9. The adjustable spot welding protection device according to claim 1, characterized in that: The first clamping assemblies (2) are arranged as a pair, and the second clamping assemblies (3) are arranged as two pairs.

10. The adjustable spot welding protection device according to claim 1, characterized in that: The center of the bottom plate (1) is provided with a hole (8) for placing a welding piece and an auxiliary pad (9); the auxiliary pad (9) is used to support the welding piece.

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