Electric drive unit for X type gun

Abstract

There is provided an electric driving unit for X-type gun made up by combining a pressure application driving body (8) with a motor (12), wherein the electric driving unit is attached to a fixed arm (3) or a gun bracket (6) utilizing a housing of the motor (12), thereby obtaining the electric driving unit for X-type gun capable of rendering the electric driving unit to be compact and held stably, and causing the maintenance thereof to be executed with reliability and ease.; The electric driving unit for X-type gun, wherein the pressure application driving body (8) and a motor (12) are combined with each other, comprises: a rotary shaft (13) provided in the motor (12) and formed of a hollow shaft to which a screw shaft (14) is secured; a guide bearing (18) provided at the front end side of the motor (12) for guiding the pressure application shaft (9); said pressure application shaft (9) having a part to be driven by the motor (12) and pulled into the motor (12); a hollow part (17) for containing therein a tip end side of the screw shaft (14); a nut (16) to be threaded with the screw shaft (14); and a bearing (11) provided at the front thereof for causing the rear end of the swing arm (1) to be journalled to the pressure application shaft (9) by a pivotal shaft (10); ; said electric driving unit for X-type gun still further comprising a housing (20) provided at the front end of the motor (12); a bearing (19) provided in the housing (20) for bearing a load applied to the rotary shaft (13) of the motor (12) in the axial direction thereof; and a bearing (21) provided in the housing (20) for causing the housing (20) to be journalled to the fixed arm (3) or causing the housing (20) to be journalled to the gun bracket (6) by a pivotal shaft (22).

Description

technical field [0001] The invention relates to an electric drive unit for an X-type gun, comprising two gun arms provided with electrodes at their tips opposite each other, wherein as the middle of the rocker arm of one of the gun arms The part is pivotally connected (journalled) to the gun bracket by a pivot, while the rear end of the rocker arm is connected to the pressure application shaft located in the pressure application drive body, and the rear end of the fixed arm as another gun arm is fixed to the pressure application Drive body or gun mount. Background technique [0002] There is already such an electric drive unit for X-type guns, which comprises two gun arms provided with electrodes at the tips opposite to each other, wherein as the rocker arm of one of the gun arms The middle part is pivotally connected to the gun bracket by a pivot, while the rear end of the rocker arm is connected to the pressure applying shaft located in the pressure applying drive body, a...

AI Technical Summary

Problems solved by technology

[0005] Although, for example, the pressure applying drive unit of the welding apparatus described in JP2001-293577A is constructed such that the pressure applying drive main body and the motor are combined with each other to make the overall length of the pressure applying drive unit shorter, it does not take into account the fact that the drive unit is provided in the welding apparatus. position, and there is no such revelation that the technical idea that the gun mount utilizes the motor housing for connection

Images