Truck tailgate welding fixture

Abstract

A welding fixture for a truck tailgate includes: a base including a working platform; a first positioning module located at a first end of the working platform; a second positioning module located at a second end of the working platform, including a fixed seat connected to the working platform, at least one pivot arm pivotally disposed on the fixed seat, and two pressure heads disposed on the at least one pivot arm; two outer positioning modules located at a third end and a fourth end of the working platform, respectively; and a rotating fixture module located at the first end of the working platform, including an assembly seat connected to the working platform, a rotating arm rotatably disposed on the assembly seat, two side positioning components and an intermediate positioning component disposed on the rotating arm, and the intermediate positioning component being located between the two side positioning components.

Claims

1. A truck tailgate welding fixture, adapted to be used with a robotic arm for welding a truck tailgate, the truck tailgate including a door panel body, the truck tailgate welding fixture comprising: a base including a working platform; a first positioning module located at a first end of the working platform, adapted to position a first support arm having a plurality of positioning pieces on the door panel body; a second positioning module located at a second end of the working platform, including a fixed seat coupled to the working platform, at least one pivot arm pivotally disposed on the fixed seat, two pressure abutments disposed on the at least one pivot arm, and adapted to position a second support arm on the door panel body; Two outer positioning modules, respectively located at a third end and a fourth end of the working platform, are adapted to push the two side plates against the two ends of the first and second support arms; and a rotating fixture module, located at the first end of the working platform, includes an assembly base connected to the working platform, a rotating arm rotatably disposed on the assembly base, two side positioning components and a middle positioning component disposed on the rotating arm, and the middle positioning component is located between the two side positioning components. The two side positioning components are adapted to position the two inner support arms on the door panel body, and make the two ends of the two inner support arms abut against the first and second support arms respectively. The middle positioning component is adapted to position a connecting arm on the door panel body, and make the two ends of the connecting arm abut against the two inner support arms.

2. The truck tailgate welding fixture as described in claim 1, wherein, The work platform has several adjustment holes, in which the fixing seat of the second positioning module, the assembly seat of the rotary jig module, and / or the two outer positioning modules are combined with several adjustment holes.

3. The truck tailgate welding fixture as described in claim 1, wherein, The first positioning module includes two sliding components, each of which includes a slider and several through rods. The slider can slide between an initial position and a usage position. When the slider is in the usage position, the several through rods pass through several positioning pieces of the first support arm.

4. The truck tailgate welding fixture as described in claim 3, wherein, Each sliding component includes a base assembled to the working platform. The base has a sliding guide rod, and the slider is slidably disposed on the sliding guide rod. The plurality of through rods are assembled to the slider.

5. The truck tailgate welding fixture as described in claim 3, wherein, The first positioning module includes several limiting blocks that are combined with the working platform. These limiting blocks are adapted to allow the end edge of the door panel body to abut against the platform, and to prevent the parts of the two sliding components connected to the working platform from contacting the end edge of the door panel body.

6. The truck tailgate welding fixture as described in claim 1, wherein, When the pivot arm is in an initial position, it is in a raised state and the corresponding pressing head does not extend into the area on the work platform where the door panel body is placed; when the pivot arm is switched to a use position, the corresponding pressing head extends into the area on the work platform where the door panel body is placed.

7. The truck tailgate welding fixture as described in claim 6, wherein, When the pivot arm is in the operating position, the corresponding pressing head presses against the surface of the second support arm from its free end, and / or a through rod inside the pressing head passes through a pair of alignment holes on the second support arm.

8. The truck tailgate welding fixture as described in claim 1, wherein, The outer positioning module includes a pressure plate with several protrusions. When the pressure plate is moved to a use position, it abuts against the outer side of the side plate, and the several protrusions pass through several holes in the side plate.

9. The truck tailgate welding fixture as described in claim 1, wherein, The assembly base is provided with a rotating base, one end of the rotating arm is located on the rotating base, and the two side positioning components and the middle positioning component are located on the other end of the rotating arm. During the process of the rotating base driving the rotating arm to switch to an initial position, the rotating arm takes the two side positioning components and the middle positioning component away from the top of the door panel body. During the process of the rotating base driving the rotating arm to switch to a use position, the rotating arm rotates the two side positioning components and the middle positioning component into the top of the door panel body.

10. The truck tailgate welding fixture as described in claim 9, wherein, The rotating arm is provided with an anti-rotation hole, and the assembly base is provided with an anti-rotation socket. A plug passes through the anti-rotation hole and into the anti-rotation socket to jointly restrict the rotating arm from rotating or wobbling relative to the assembly base.

11. The truck tailgate welding fixture as described in claim 1, wherein, Each of the side positioning components includes at least one pressing member, which presses against the corresponding inner support arm when moved to a use position.

12. The truck tailgate welding fixture as described in claim 11, wherein, Each side positioning component includes a linkage plate and at least one pair of abutments. The abutment is engaged with and protrudes from the bottom end of the linkage plate. One side of the abutment is connected to the linkage plate, and the other side extends downward for the side edge of the corresponding inner support arm to abut against.

13. The truck tailgate welding fixture as described in claim 1, wherein, The intermediate positioning assembly includes at least one pressing member and at least one pair of aligning members. One side of the aligning member is engaged with the pressing member, and the other side of the aligning member extends downward for the side edge of the connecting arm to align and abut against. When the pressing member is moved to a use position, it presses against the connecting arm.

14. The truck tailgate welding fixture as described in any one of claims 1 to 13, further comprising an auxiliary positioning module including at least one actuator adapted to cause the first positioning module, the second positioning module, the two outer positioning modules or the rotating fixture module to contact the corresponding truck tailgate component and remain in a working position against the corresponding truck tailgate component.

15. The truck tailgate welding fixture as described in claim 14, wherein, The auxiliary positioning module includes at least one clamp disposed on the first positioning module. The clamp is assembled on the working platform. When the first positioning module is in a use position, the clamp presses down on a long arm body of the first support long arm.

16. The truck tailgate welding fixture as described in claim 14, wherein, The auxiliary positioning module includes several clamps disposed on the rotary jig module. A pair of positioning members of the side positioning component are paired with one of the clamps to jointly abut against the two sides of the inner support arm. A pair of positioning members of the middle positioning component are paired with another clamp to jointly abut against the two sides of the connecting arm.

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