Rapid positioning welding tool

Abstract

The utility model discloses a quick positioning and welding tool, which relates to the technical field of positioning and welding, and comprises a support platform, a positioning structure, a forming part and a nut, the positioning structure consists of a first positioning part, a second positioning part and an insertion part, and an adaptive mechanism is arranged in the positioning structure; the first positioning part and the second positioning part are each internally provided with a movable cavity with a cross-shaped cross section, and the two movable cavities communicate up and down through a through communicating channel. Through the arrangement of the positioning blocks, the four positioning blocks capable of elastically sliding can automatically and elastically adjust the extension length according to the actual specifications of a forming part connecting hole and a nut screw hole, the positioning structure does not need to be frequently replaced, workpieces of multiple specifications are adapted, meanwhile, the positioning blocks are always attached to the hole wall through elastic restoring force, the positioning stability is guaranteed, and the production efficiency is improved. The equipment reserve cost is reduced, the welding precision and the tool universality are improved, and the problems that a traditional single adaptive structure is tedious in remodeling and high in cost are solved.

Description

Technical Field

[0001] This utility model relates to the field of positioning welding technology, specifically to a rapid positioning welding fixture. Background Technology

[0002] In the existing technology, the molded parts of the outer wall of the fuel tank need to be welded with nuts at the connection holes. The traditional method of positioning by bolts has the problems of cumbersome operation and poor positioning accuracy.

[0003] The patent with announcement number CN220761509U proposes a rapid positioning welding fixture, which achieves rapid positioning of the molded part and the nut to be welded through the cooperation of a support platform, a positioning structure and a clamping mechanism: the first positioning part of the positioning structure is inserted into the connecting hole of the molded part, and the second positioning part is sleeved on the nut to be welded. The cylindrical positioning part ensures coaxiality and improves positioning accuracy and operation efficiency.

[0004] However, in the positioning structure of the above tooling, the outer diameter of the first positioning part and the outer diameter of the second positioning part are matched with the connecting hole of the molded part and the screw hole of the nut to be welded, respectively. When the diameter of the connecting hole of the molded part and the screw hole specification of the nut to be welded change, the original positioning structure cannot be adapted and a positioning structure of the corresponding size needs to be replaced. Even if the positioning structure and the support platform are detachably connected, multiple positioning structures still need to be reserved for different specifications, which increases the equipment cost. Utility Model Content

[0005] To solve the above-mentioned technical problems, a rapid positioning welding fixture is provided, which solves the problems existing in the background technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rapid positioning welding fixture, including a support platform, a positioning structure detachable from the support platform, and a molded part and a nut sequentially sleeved on the positioning structure from bottom to top;

[0007] The positioning structure consists of a first positioning part, a second positioning part, and an insertion part fixedly connected from top to bottom. The positioning structure has a built-in adapter mechanism to improve its applicability.

[0008] Both the first positioning part and the second positioning part are provided with a cross-shaped movable cavity, and the two movable cavities are connected vertically through a through-through channel. The adapter mechanism consists of two sets, which are respectively housed in the movable cavities of the first positioning part and the second positioning part.

[0009] The adapter mechanism includes four positioning blocks, which can elastically slide along the cross-shaped arm of the movable cavity.

[0010] Preferably, the adapter mechanism further includes a power unit for causing the four sets of positioning blocks to extend outward synchronously;

[0011] The power unit consists of a magnetic column and a magnetic sheet.

[0012] Preferably, the magnetic column is vertically positioned above the first positioning part, and the top of the first positioning part has a through-hole coaxial with the connecting channel. The lower end of the magnetic column can pass through the through-hole and extend into the connecting channel.

[0013] Preferably, the magnetic sheet is fixed to the end of the positioning block facing the magnetic post, and the magnetic poles of the magnetic sheet and the magnetic post are the same on opposite sides.

[0014] Preferably, the top surface of the positioning block is provided with a clearance groove, and a fixing block that is fixedly connected to the inner wall of the top of the movable cavity is slidably disposed in the clearance groove.

[0015] Preferably, a return spring is fixed between the fixing block and the innermost inner wall of the clearance groove.

[0016] Preferably, the top of the magnetic column is provided with a notch, and a handle is fixed in the notch.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] By setting up positioning blocks, the four elastic sliding positioning blocks can automatically and elastically adjust their extension length according to the actual specifications of the connecting holes and nut screw holes of the formed parts. This eliminates the need for frequent replacement of positioning structures and adapts to workpieces of various specifications. At the same time, the elastic restoring force ensures that the positioning blocks always fit against the hole wall, guaranteeing positioning stability. This reduces equipment reserve costs and improves welding accuracy and tooling versatility, solving the problems of cumbersome and costly replacement of traditional single-adaptive structures. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of the positioning structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the positioning structure of this utility model.

[0022] The numbers on the map are:

[0023] 1. Support platform; 2. Molded part; 3. Nut; 4. Positioning hole; 5. Positioning structure; 6. Adaptor mechanism; 51. First positioning part; 52. Second positioning part; 53. Insertion part; 54. Movable cavity; 55. Connecting channel; 61. Positioning block; 62. Fixing block; 63. Return spring; 64. Magnetic sheet; 65. Magnetic column. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0025] Reference Figure 1-3 As shown, a rapid positioning welding fixture includes a support platform 1, a positioning structure 5 detachable from the support platform 1, and a molded part 2 and a nut 3 sequentially sleeved on the positioning structure 5 from bottom to top.

[0026] The positioning structure 5 consists of a first positioning part 51, a second positioning part 52, and an insertion part 53, which are fixedly connected from top to bottom.

[0027] The first positioning part 51 is used for vertically fitting the nut 3, and the outer diameter of the first positioning part 51 is adapted to the screw hole of the nut 3.

[0028] The second positioning part 52 is used for radial positioning of the molded part 2, and the bottom end of the molded part 2 is provided with a connecting hole that matches the outer diameter of the second positioning part 52.

[0029] The insertion part 53 is used to fix the positioning structure 5 and the support platform 1. The top surface of the support platform 1 is provided with a positioning hole 4 corresponding to the connection hole. The insertion part 53 can be inserted into the positioning hole 4.

[0030] With the positioning structure 5, the first positioning part 51 and the second positioning part 52 can be precisely matched to the screw hole of the nut 3 and the connection hole of the molded part 2 in layers, thereby limiting the radial displacement of the molded part 2 and the nut 3 and ensuring coaxiality; the insertion part 53 is plugged and inserted with the positioning hole 4 of the support platform 1, which simplifies assembly and disassembly and improves operation efficiency.

[0031] However, in practice, the outer diameter of the first positioning part 51 and the outer diameter of the second positioning part 52 are matched with the connecting hole of the molded part 2 and the screw hole of the nut 3, respectively. When the diameter of the connecting hole of the molded part 2 and the screw hole specification of the nut 3 change, the original positioning structure 5 cannot be adapted and the positioning structure 5 of the corresponding size needs to be replaced. Even if the positioning structure 5 and the support platform 1 are detachably connected, multiple positioning structures 5 of different specifications still need to be reserved, which increases the equipment cost.

[0032] Therefore, referring to Figure 1 and Figure 3 As shown, it is worth noting that the positioning structure 5 has a built-in adapter mechanism 6 to improve its applicability.

[0033] The first positioning part 51 and the second positioning part 52 are each provided with a cross-shaped movable cavity 54, and the two movable cavities 54 are connected vertically through a through-through connecting channel 55. The adapter mechanism 6 consists of two sets, which are respectively housed in the movable cavities 54 of the first positioning part 51 and the second positioning part 52.

[0034] The adapter mechanism 6 includes four positioning blocks 61, which can slide elastically along the cross-shaped cavity arm of the movable cavity 54 respectively.

[0035] With the setting of positioning blocks 61, the four elastically sliding positioning blocks 61 can automatically and elastically adjust their extension length according to the actual specifications of the connecting hole of the molded part 2 and the screw hole of the nut 3, without the need to frequently replace the positioning structure 5, and adapt to workpieces of multiple specifications. At the same time, the elastic restoring force keeps the positioning blocks 61 in contact with the hole wall, ensuring positioning stability, which not only reduces equipment reserve costs, but also improves welding accuracy and tooling versatility, solving the problems of cumbersome and costly replacement of traditional single-adaptive structures.

[0036] Furthermore, referring to Figure 2 and Figure 3 As shown, it is worth noting that the adapter mechanism 6 also includes a power unit for the four sets of positioning blocks 61 to extend outward synchronously.

[0037] The power unit consists of a magnetic column 65 and a magnetic sheet 64;

[0038] The magnetic column 65 is vertically positioned above the first positioning part 51. The top of the first positioning part 51 has a through hole coaxial with the connecting channel 55. The lower end of the magnetic column 65 can pass through the through hole and extend into the connecting channel 55.

[0039] The magnetic sheet 64 is fixed to the end of the positioning block 61 facing the magnetic post 65, and the magnetic poles of the opposite sides of the magnetic sheet 64 and the magnetic post 65 are the same;

[0040] By utilizing the power unit, the magnetic column 65 and the magnetic sheet 64 repel each other with the same poles, the magnetic column 65 moves downward along the through hole. The magnetic column 65 and the magnetic sheet 64 repel each other with the same poles, driving the four sets of positioning blocks 61 to expand outward synchronously. In this way, the nut 3 and the molded part 2 can be quickly centered without mechanical contact.

[0041] Furthermore, referring to Figure 3 As shown, it is worth noting that the top surface of the positioning block 61 is provided with a clearance groove, and a fixing block 62 is slidably disposed in the clearance groove and fixedly connected to the inner wall of the top of the movable cavity 54. A return spring 63 is fixed between the fixing block 62 and the innermost inner wall of the clearance groove.

[0042] By setting up the fixing block 62 and the return spring 63, the sliding cooperation between the fixing block 62 and the clearance groove provides a guiding constraint for the positioning block 61, so that it remains stable when sliding along the cavity arm of the movable cavity 54 and avoids displacement. The return spring 63 compresses and stores energy when the positioning block 61 is driven outward by the power unit. After the force of the power unit is removed, the elastic restoring force pushes the positioning block 61 to automatically retract and reset, realizing the elastic extension and retraction function of the positioning block 61. It can not only adapt to fit the nuts 3 and the molded parts 2 with different hole diameters, but also provide a continuous and stable elastic clamping force after positioning, ensuring that the workpiece is firmly positioned during the welding process, and effectively improving the adaptability and positioning stability of the tooling.

[0043] Furthermore, referring to Figure 3 As shown, it is worth noting that the top of the magnetic column 65 has a notch, and a handle is fixed inside the notch;

[0044] With the handle, operators can more easily lift or press down the magnetic column 65 to quickly adjust the extension and retraction of the four sets of positioning blocks 61.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick positioning welding fixture, comprising a support platform (1), a positioning structure (5) detachable from the support platform (1), and a molded part (2) and a nut (3) sequentially sleeved on the positioning structure (5) from bottom to top. The positioning structure (5) is composed of a first positioning part (51), a second positioning part (52), and an insertion part (53) fixedly connected from top to bottom, characterized in that, The positioning structure (5) has a built-in adapter mechanism (6) to improve its applicability. Both the first positioning part (51) and the second positioning part (52) are provided with a cross-shaped movable cavity (54), and the two movable cavities (54) are connected vertically through a through-through connecting channel (55). The adapter mechanism (6) consists of two sets, which are respectively housed in the movable cavities (54) of the first positioning part (51) and the second positioning part (52). The adapter mechanism (6) includes four positioning blocks (61), which can be elastically slid along the cross-shaped arm of the active cavity (54).

2. The rapid positioning welding fixture according to claim 1, characterized in that, The adapter mechanism (6) also includes a power unit for causing the four sets of positioning blocks (61) to extend outward synchronously; The power unit is composed of a magnetic column (65) and a magnetic sheet (64).

3. The rapid positioning welding fixture according to claim 2, characterized in that, The magnetic column (65) is vertically positioned above the first positioning part (51). The top of the first positioning part (51) has a through hole coaxial with the connecting channel (55). The lower end of the magnetic column (65) can pass through the through hole and extend into the connecting channel (55).

4. The rapid positioning welding fixture according to claim 3, characterized in that, The magnetic sheet (64) is fixed to one end of the positioning block (61) facing the magnetic column (65), and the magnetic poles of the opposite sides of the magnetic sheet (64) and the magnetic column (65) are the same.

5. The rapid positioning welding fixture according to claim 2, characterized in that, The top surface of the positioning block (61) is provided with a clearance groove, and a fixing block (62) that is fixedly connected to the inner wall of the top of the movable cavity (54) is slidably disposed in the clearance groove.

6. The rapid positioning welding fixture according to claim 5, characterized in that, A return spring (63) is fixed between the fixing block (62) and the innermost inner wall of the clearance groove.

7. The rapid positioning welding fixture according to claim 2, characterized in that, The top of the magnetic column (65) is provided with a notch, and a handle is fixed in the notch.

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