| 摘要 |
The present invention reduces the waste of time and manpower according to readjustment since it is not necessary for the height of a nozzle to be readjusted for the replacement of a screw during reassembly after rotation. The present invention includes a swivel bed installed on the top of a front bed, a barrel bracket fixed to the upper portion of the swivel bed, a support installed on the lower surface of the swivel bed, an adjustment member which adjusts the height of the swivel bed by moving the swivel bed up and down through rotation while being inserted into both sides of the barrel bracket and the swivel bed, being combined with the barrel bracket to slide, and being combined with the swivel bed by screw threads, and a coupling member which is combined and fixed with the front bed after passing through the adjustment member. |
