Handheld marking machine for drill rod joint

Abstract

The invention discloses a handheld marking machine for a drill rod joint. The handheld marking machine for the drill rod joint comprises a machine body, wherein a work fixture is arranged below the machine body, and comprises a fixture body, a push rod and a rolling shaft frame; the fixture body comprises an upper plate, a lower plate and a side plate which are connected in a right-U shape, and a bent part bent downwards is arranged on an end part away from the side plate, of the upper plate; the push rod penetrates through the bent part along the angular bisector of the side plate and the lower plate and then is slidably connected with the bent part, an external thread is formed on a part located above the bent part, of the push rod, a limit bolt is connected to the external thread, a limit step is arranged on a part located below the bent part, of the push rod, a support spring is arranged between the limit step and the bent part, and the support spring sleeves the outer wall of the push rod; and the middle part of the rolling shaft frame is hinged to the lower end of the push rod, a cylindrical rolling shaft is rotationally connected to the end parts of the rolling shaft frame separately, and a clamping space used for fixing the drill rod joint is formed among the rolling shaft, the side plate and the lower plate. The handheld marking machine for the drill rod joint is reasonable in structure, and capable of carrying out rapid fixing on drill rod joints with different outer diameters.

Description

technical field [0001] The invention relates to the technical field of marking machines, in particular to a hand-held marking machine for drill pipe joints. Background technique [0002] At present, after the drill pipe joints are produced in batches, they will be marked on the drill pipe joints according to the parameters such as model and size, and the product information will be publicized through the marked marks. Generally, a hand-held pneumatic marking machine will be used for marking. This kind of marking machine is driven by the host to work on the drill pipe joint with the marking head; [0003] Since the outer wall of the drill pipe joint is circular, a marking plane is usually milled on the outer wall of the drill pipe joint in advance, and then the window of the hand-held marking machine is aligned with the marking plane and then the main engine is started for marking. When the marking machine is working The marking head exerts force on the surface of the drill ...

AI Technical Summary

Problems solved by technology

[0003] Since the outer wall of the drill pipe joint is circular, a marking plane is usually milled on the outer wall of the drill pipe joint in advance, and then the window of the hand-held marking machine is aligned with the marking plane and then the main engine is started for marking. When the marking machine is working The marking head exerts force on the surface of the drill pipe joint, and the marking machine is also subjected to the reaction force from the drill pipe joint. Since the marking machine and the drill pipe joint are not fixed, in order to avoid the reaction force causing the marking machine to jump upward, The problem of different depths of the marked marks requires the user to press the marking machine hard, which increases the labor intensity of the user. In addition, the drill pipe joint is prone to rolling under the influence of the reaction force, resulting in incomplete or discontinuous marking printing , resulting in the problem of low efficiency due to defects

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