Welding fixture for the long arm supporting the tailgate of the truck

Abstract

A welding fixture for a long arm supporting a truck tailgate includes: a base including a working platform having a center line; a co-action module including a first actuator adapted to cause two linkages to move synchronously closer or further apart, and two end clamping assemblies symmetrically arranged about the center line and respectively connected to the two linkages, the two end clamping assemblies being adapted to abut against two ends of a long arm supporting a truck; a fixing module including two clamping sets fixed to the working platform and a sliding guide, the two clamping sets being symmetrically arranged about the center line and adapted to position a plurality of positioning pieces on the long arm supporting a truck; and a sliding module including two pairs of hole assemblies, each pair of hole assemblies including a slider slidably disposed on the sliding guide and adapted to allow two through rods to pass through the clamping sets and the plurality of positioning pieces.

Claims

1. A welding fixture for a long arm supporting a truck tailgate, comprising: a base including a working platform having a centerline; a co-action module including a first actuator, two linkages and a two-end clamp assembly, the first actuator and the two linkages being disposed on the base, the first actuator being adapted to cause the two linkages to move synchronously closer or further away from each other around the centerline, the two-end clamp assembly being arranged in a mirror symmetrical manner around the centerline and respectively connected to the two linkages, the two-end clamp assembly being adapted to abut against the two ends of a long arm supporting a truck tailgate; A fixed module includes two clamping assemblies fixed on the working platform and a sliding guide. The two clamping assemblies are arranged in a mirror-symmetrical manner with the center line as the center. The two clamping assemblies are adapted to position several positioning pieces on the support arm. A sliding module includes two pairs of hole assemblies. Each pair of hole assemblies includes a slider and two through rods. The slider is slidably disposed on the sliding guide and is adapted to allow the two through rods to pass through the clamping assemblies and the several positioning pieces.

2. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 1, wherein, The working platform is provided with two first long holes, which are located on both sides of the center line. The two end clamping assemblies pass through the two first long holes respectively. The lower ends of the two end clamping assemblies are respectively connected to the two linkages. The upper ends of the two end clamping assemblies pass through the two first long holes respectively and can move closer or further away from the two first long holes.

3. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 2, wherein, Each end clamp assembly includes a slider and a clamping piece. The slider is at least partially located in the corresponding first elongated hole. The length of the slider is less than that of the first elongated hole. The clamping piece is attached to the slider. The two clamping pieces are adapted to abut against the two ends of the long arm body of the supporting long arm, respectively.

4. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 3, wherein, Each end clamp assembly includes a base plate connected to the bottom end of the slider. The width of the base plate is greater than the first elongated hole. The linkage is connected to the base plate, and the output end of the first actuator is connected to the base plate of one of the end clamp assemblies.

5. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 4, wherein, The bottom of the first elongated hole has an enlarged portion, the width of which is equal to or slightly greater than the width of the base plate, and the base plate is accommodated in the enlarged portion.

6. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 1, wherein, Each clamp assembly has an inner fixing block and an outer fixing block fixed to the work platform at intervals. Two extending tabs are respectively connected to the inner fixing block and the outer fixing block. One of the extending tabs has a through hole near its free end, and the other extending tab has two through holes near its free end. The free ends of two auxiliary clamps are respectively spaced from the two extending tabs, and the auxiliary clamps do not block the through holes of the extending tabs.

7. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 1, wherein, The first actuator has an output terminal that is coupled to one of the end clamp assemblies and one of the linkages therein.

8. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 1, wherein, The linkage is a rack and pinion, and a gear is rotatably mounted on the base. The two linkages mesh with the gear respectively. The meshing points of the two linkages are opposite to each other along the radial direction of the gear, and the two linkages extend in opposite directions.

9. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 1, wherein, The sliding module includes two second actuators and two push rods. The working platform is provided with two second elongated holes, which are located on both sides of the center line. The two second actuators are located on the base. Each second actuator has an output end, which is connected to a corresponding push rod. The push rod passes through the corresponding second elongated hole and is connected to the corresponding slider.

10. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 9, wherein, Each of the two through rods has a shoulder on its circumferential surface, which is suitable for the two through rods to press against the outer side of one of the positioning plates.

11. The welding fixture for the long arm supporting the tailgate of the truck as described in claim 9, further comprising a controller adapted to control the operating state of the first actuator and the second actuator.

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