Automobile body pillar welding positioning jig

Abstract

The utility model provides a kind of automobile body stand column welding positioning fixture, including base, the top of base is fixedly connected with vertical plate, the top of one side of vertical plate is fixedly connected with horizontal plate, the one side of vertical plate is slidably matched with displacement plate, the opposite side of displacement plate top is fixedly connected with multiple fixed cylinders, the inner wall of multiple fixed cylinders is slidably matched with positioning rod, multiple fixed cylinders are fixedly connected with fixed plate, the fixed plate is provided with the positioning assembly that is matched with positioning rod. By rotating adjusting rod and adjusting stud, the height and the extension length of positioning rod can be adjusted, replacing the complex operation of traditional multiple bolts and multiple dowel pins, the size difference of different models of body stand column can be adapted, without replacing the whole set of fixture, reducing the cost of fixture procurement and storage, avoiding a large amount of downtime when changing models, and improving the flexibility level of production line.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, specifically to a welding and positioning fixture for automobile body pillars. Background Technology

[0002] In the automotive manufacturing industry, the body pillar, as a key component supporting the vehicle's frame structure, directly affects the vehicle's collision resistance and passenger safety. Existing automotive body pillar welding positioning fixtures have poor versatility; a single fixture is often only suitable for specific body pillar models. When producing different car models, numerous fixtures need to be changed, leading to increased production costs and reduced efficiency. Furthermore, existing fixtures are complex to operate, hindering workers from quickly and accurately positioning and welding the body pillars. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a welding positioning fixture for automotive body pillars to solve the problems mentioned in the background. This utility model has a novel structure, and the height and the extension length of the positioning rod can be adjusted by rotating the adjusting rod and adjusting stud. It can replace the complex operation of traditional multi-bolt and multi-positioning pin, adapt to the size differences of different models of body pillars, eliminate the need to replace the entire set of fixtures, reduce fixture procurement and storage costs, avoid a large amount of downtime for mold changing when switching models, and improve the flexibility of the production line.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a welding positioning fixture for automotive body pillars, comprising a base, a vertical plate fixedly connected to the top of the base, a horizontal plate fixedly connected to one side of the top of the vertical plate, a displacement plate slidably fitted to one side of the vertical plate opposite to the horizontal plate, multiple fixed cylinders fixedly connected to the opposite sides below the horizontal plate and above the displacement plate, positioning rods slidably fitted to the inner walls of the multiple fixed cylinders, a fixed plate fixedly connected to the multiple fixed cylinders, an abutment block fixedly connected to one end of the positioning rod extending to the outside of the fixed plate, and a positioning component cooperating with the positioning rod provided on the fixed plate.

[0005] Furthermore, a displacement groove is provided through one side of the upright plate, and two lifting plates that slide within the displacement groove are fixedly connected to one side of the displacement plate. A screw is fixedly connected between the upper and lower inner walls of the displacement groove.

[0006] Furthermore, the middle of the two lifting plates is rotatably fitted with threaded sleeves that extend vertically through the center. The threaded sleeves are threadedly fitted with screws. One side of the displacement plate is rotatably fitted with an adjusting rod that extends to the outside.

[0007] Furthermore, a worm gear is fixedly connected to one end of the adjusting rod located between the two lifting plates, and a worm wheel that meshes with the worm gear is fixedly connected to the outer wall of the threaded sleeve.

[0008] Furthermore, the positioning component includes two displacement bars that are slidably disposed opposite each other above the fixed plate, and a slider is fixedly connected to the bottom of each of the two displacement bars. Sliding grooves that slide with the sliders are provided on both sides above the fixed plate. A spring is fixedly connected between one end of the positioning rod and the bottom wall of the fixed cylinder.

[0009] Furthermore, a fixing block is fixedly connected to one side of the fixing plate, and an adjusting stud is rotatably fitted to one side of the fixing block. One of the displacement bars has a threaded groove that is threaded to the adjusting stud.

[0010] Furthermore, a fixed shaft is fixedly connected to the upper side of the fixed plate, and a connecting frame is rotatably fitted around the fixed shaft. Through slots are provided on the opposite sides of the two displacement bars, and the two ends of the connecting frame are respectively located in the through slots of the two displacement bars.

[0011] Furthermore, connecting columns are fixedly connected to the inner walls of the through grooves on both displacement bars, and strip-shaped grooves are opened through both ends of the connecting frame. The connecting columns rotate and slide in the strip-shaped grooves. Multiple sets of positioning clamps are fixedly connected to the opposite sides of the two displacement bars, and the positioning rod is located between and overlaps with each set of two positioning clamps.

[0012] The beneficial effects of this utility model are:

[0013] 1. This automotive body pillar welding positioning fixture can adjust the height and the extension length of the positioning rod by rotating the adjusting rod and adjusting stud, replacing the complicated operation of traditional multi-bolt and multi-positioning pin. It can adapt to the size differences of different models of body pillars, without the need to replace the entire set of fixtures, reducing fixture procurement and storage costs, avoiding a lot of downtime for mold change when switching models, and improving the flexibility of the production line.

[0014] 2. This automotive body pillar welding positioning fixture uses a positioning rod that is pre-tightened by a spring and rigidly fixed to a positioning clamping block. Combined with the tight fit between the abutment block and the pillar surface, the positioning error can be controlled within a smaller range, reducing problems such as welding verticality deviation and weld point offset caused by positioning deviation, thus ensuring the welding strength and safety of the body pillar. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a welding positioning fixture for automobile body pillars according to this utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the displacement plate and the vertical plate of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is a schematic diagram of the positioning component of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection between the fixed cylinder and the fixed plate of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the two displacement bars connected by this utility model.

[0021] In the diagram: 1. Base; 2. Vertical plate; 3. Horizontal plate; 4. Displacement plate; 5. Fixed cylinder; 6. Positioning rod; 7. Positioning assembly; 701. Displacement strip; 702. Fixed block; 703. Threaded groove; 704. Slider; 705. Slide groove; 706. Spring; 707. Fixed shaft; 708. Connecting frame; 709. Through groove; 710. Connecting column; 711. Strip groove; 712. Clamping block; 713. Adjusting stud; 8. Abutment block; 9. Displacement groove; 10. Lifting plate; 11. Screw; 12. Threaded sleeve; 13. Adjusting rod; 14. Worm gear; 15. Worm wheel; 16. Fixed plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please refer to Figures 1 to 6 This utility model provides a technical solution: a welding positioning fixture for automotive body pillars, including a base 1, a vertical plate 2 fixedly connected to the top of the base 1, a horizontal plate 3 fixedly connected to one side of the top of the vertical plate 2, a displacement plate 4 slidably fitted to one side of the vertical plate 2 opposite to the horizontal plate 3, a plurality of fixed cylinders 5 fixedly connected to the opposite side below the horizontal plate 3 and above the displacement plate 4, a positioning rod 6 slidably fitted to the inner wall of the plurality of fixed cylinders 5, a fixed plate 16 fixedly connected to the plurality of fixed cylinders 5, an abutment block 8 fixedly connected to one end of the positioning rod 6 extending to the outside of the fixed plate 16, and a positioning component 7 that cooperates with the positioning rod 6 provided on the fixed plate 16.

[0024] In this embodiment, a displacement groove 9 is provided through one side of the vertical plate 2. Two lifting plates 10 are fixedly connected to one side of the displacement plate 4 and are slidably engaged in the displacement groove 9. A screw 11 is fixedly connected between the upper and lower inner walls of the displacement groove 9. A threaded sleeve 12 is rotatably engaged in the middle of the two lifting plates 10 and is provided through the upper and lower parts. The threaded sleeve 12 is threadedly engaged with the screw 11. An adjusting rod 13 is rotatably engaged in one side of the displacement plate 4 and extends to the outside. A worm gear 14 is fixedly connected to one end of the adjusting rod 13 located between the two lifting plates 10. A worm wheel 15 that meshes with the worm gear 14 is fixedly connected to the outer wall of the threaded sleeve 12.

[0025] Specifically, the displacement plate 4 on one side of the upright plate 2 slides with the displacement groove 9 through the lifting plate 10. When the adjusting rod 13 is rotated, the worm gear 14 drives the worm wheel 15 to rotate, causing the threaded sleeve 12 to move up and down along the screw 11, thereby driving the displacement plate 4 to rise and fall synchronously, realizing the adjustment of the vertical distance between the horizontal plate 3 and the displacement plate 4, adapting to the vehicle body pillars of different heights. The fixed cylinder 5 on the horizontal plate 3 and the displacement plate 4 are equipped with sliding positioning rods 6. The abutment block 8 at the outer end of the positioning rod 6 is used to directly contact and position the vehicle body pillar.

[0026] In this embodiment, the positioning component 7 includes two displacement bars 701 slidably fitted on the upper surface of the fixed plate 16 and arranged opposite each other. A slider 704 is fixedly connected to the bottom of each of the two displacement bars 701. Sliding grooves 705 are formed on both sides of the upper surface of the fixed plate 16, sliding with the sliders 704. A spring 706 is fixedly connected between one end of the positioning rod 6 and the bottom wall of the fixed cylinder 5. A fixing block 702 is fixedly connected to one side of the fixed plate 16. An adjusting stud 713 is rotatably fitted on one side of the fixing block 702. A threaded groove 703 is formed on one side of one of the displacement bars 701, threaded with the adjusting stud 713. The upper surface of the fixed plate 16... A fixed shaft 707 is fixedly connected, and a connecting frame 708 is rotatably fitted around the fixed shaft 707. Through slots 709 are provided on opposite sides of the two displacement bars 701. The two ends of the connecting frame 708 are respectively located within the through slots 709 of the two displacement bars 701. Connecting posts 710 are fixedly connected to the inner walls of the through slots 709 on both displacement bars 701. Strip-shaped grooves 711 are provided through both ends of the connecting frame 708. The connecting posts 710 rotate and slide within the strip-shaped grooves 711. Multiple sets of positioning clamps 712 are fixedly connected to opposite sides of the two displacement bars 701. The positioning rod 6 is located between and overlaps with each set of two positioning clamps 712.

[0027] Specifically, in the positioning assembly 7, rotating the adjusting stud 713 can push one side of the displacement bar 701 to slide along the slide groove 705. Through the cooperation of the strip grooves 711 at both ends of the connecting bracket 708 with the connecting post 710, the other side of the displacement bar 701 moves synchronously in the opposite direction. The positioning clamps 712 on the two sets of displacement bars 701 move closer or further away. When the positioning clamps 712 clamp the positioning rod 6, their extension length can be fixed; when released, the positioning rod 6 returns to its original position under the elastic force of the spring 706, realizing the fitting and positioning of the body pillars of different widths and curvatures.

[0028] When using the device, the operator rotates the adjusting rod 13 to adjust the height of the displacement plate 4 according to the model of the vehicle body pillar to be welded. The adjusting rod 13 drives the worm gear 14 to rotate, and the worm wheel 15 meshing with the worm gear 14 drives the threaded sleeve 12 to move up and down on the screw 11. The lifting plate 10 drives the displacement plate 4 to slide along the displacement groove 9, so that the vertical distance between the horizontal plate 3 and the displacement plate 4 matches the height of the pillar. The extension length of the positioning rod 6 is adjusted to fit the shape of the pillar. The adjusting stud 713 is rotated, which engages with the threaded groove 703 on the displacement bar 701, pushing one side of the displacement bar 701 to slide along the slide groove 705 of the fixed plate 16. At the same time, the strip grooves 711 at both ends of the connecting frame 708 connect with the connecting column. The linkage of 710 causes the displacement bar 701 on the other side to slide in the opposite direction. The positioning clamps 712 on the two sets of displacement bars 701 move closer or further away in sync. When the positioning clamps 712 release the positioning rod 6, the positioning rod 6 extends outward under the action of the spring 706 in the fixed cylinder 5, and the abutment block 8 fits against the surface of the column. Then, the adjusting stud 713 is rotated in the opposite direction to make the positioning clamps 712 clamp the positioning rod 6, fix its extension length, and ensure that multiple positioning rods 6 are evenly pressed against the column to complete the shape adaptation. After the positioning is completed, the operator places the vehicle column between the horizontal plate 3 and the displacement plate 4 so that the surface of the column is in full contact with the abutment block 8. At this time, the positioning rod 6 is kept stable by the spring pre-tension and the rigid fixation of the positioning clamps. After confirming that the column position is correct, welding can be carried out. After welding is completed, first rotate the adjusting stud 713 to loosen the positioning clamp 712. The positioning rod 6 will reset under the action of the spring 706, releasing the clamping of the column. Then rotate the adjusting rod 13 in the opposite direction to move the displacement plate 4 upward, increasing the distance between the horizontal plate 3 and the displacement plate 4. Finally, take out the welded column to complete one positioning welding process.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding positioning fixture for automobile body pillars, comprising a base (1), characterized in that: A vertical plate (2) is fixedly connected above the base (1). A horizontal plate (3) is fixedly connected to one side of the top of the vertical plate (2). A displacement plate (4) is slidably fitted to one side of the vertical plate (2) and is opposite to the horizontal plate (3). Multiple fixed cylinders (5) are fixedly connected to the opposite sides below the horizontal plate (3) and above the displacement plate (4). A positioning rod (6) is slidably fitted to the inner wall of the multiple fixed cylinders (5). A fixed plate (16) is fixedly connected to the multiple fixed cylinders (5). An abutment block (8) is fixedly connected to one end of the positioning rod (6) that extends to the outside of the fixed plate (16). A positioning component (7) that cooperates with the positioning rod (6) is provided on the fixed plate (16).

2. The automotive body pillar welding positioning fixture according to claim 1, characterized in that: A displacement groove (9) is provided through one side of the upright plate (2), and two lifting plates (10) that slide in the displacement groove (9) are fixedly connected to one side of the displacement plate (4). A screw (11) is fixedly connected between the upper and lower inner walls of the displacement groove (9).

3. The automotive body pillar welding positioning fixture according to claim 2, characterized in that: The middle of the two lifting plates (10) is rotatably fitted with threaded sleeves (12) that pass through from top to bottom. The threaded sleeves (12) are threadedly fitted with screws (11). One side of the displacement plate (4) is rotatably fitted with an adjusting rod (13) that passes through to the outside.

4. The automotive body pillar welding positioning fixture according to claim 3, characterized in that: The adjusting rod (13) is fixedly connected to a worm gear (14) at one end between the two lifting plates (10), and a worm wheel (15) that meshes with the worm gear (14) is fixedly connected to the outer wall of the threaded sleeve (12).

5. The automotive body pillar welding positioning fixture according to claim 1, characterized in that: The positioning component (7) includes two displacement bars (701) that are slidably disposed opposite each other above the fixed plate (16). The bottom of each of the two displacement bars (701) is fixedly connected to a slider (704). The fixed plate (16) has grooves (705) that slide with the sliders (704) on both sides above it. A spring (706) is fixedly connected between one end of the positioning rod (6) and the bottom wall of the fixed cylinder (5).

6. The automotive body pillar welding positioning fixture according to claim 5, characterized in that: A fixing block (702) is fixedly connected to one side of the fixing plate (16), and an adjusting stud (713) is rotatably fitted to one side of the fixing block (702). One of the displacement bars (701) has a threaded groove (703) that is threadedly fitted to the adjusting stud (713) on one side.

7. The automotive body pillar welding positioning fixture according to claim 6, characterized in that: A fixed shaft (707) is fixedly connected to the upper side of the fixed plate (16). A connecting frame (708) is rotatably fitted around the fixed shaft (707). Through slots (709) are provided on the opposite sides of the two displacement bars (701). The two ends of the connecting frame (708) are respectively located in the through slots (709) of the two displacement bars (701).

8. The automotive body pillar welding positioning fixture according to claim 7, characterized in that: The inner walls of the through grooves (709) on the two displacement bars (701) are fixedly connected with connecting columns (710). Both ends of the connecting frame (708) are provided with strip-shaped grooves (711). The connecting columns (710) rotate and slide in the strip-shaped grooves (711). Multiple sets of positioning clamps (712) are fixedly connected to the opposite sides of the two displacement bars (701). The positioning rod (6) is located between each set of two positioning clamps (712) and overlaps with them.

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