JPS6064114A - Gas cutting machine - Google Patents

Abstract

PURPOSE:To offer a gas cutting machine whose tip can be adjusted, by carrying out automatic ignition and simple operation. CONSTITUTION:The titled machine is a device carrying out ignition to a pilot burner 3 and then to a tip 2 by a method wherein when a main lever 12 of a main adjusting mechanism 11 adjusting oxygen and acetylene is turned leftward, simultaneously with streaming of the oxygen and gas to the tip 2 and the pilot gas burner 3 by releasing an oxygen valve 14, a gas valve 15 and a pilot gas valve 16 at the same time by turning an auxiliary lever 13 positioned on the left side of the main lever 12 together with the main lever 12 voltage is generated through action of a piezo-electric igniting mechanism (a) and the voltage is applied to an ignition plug 4. Then when user's hold is rerealed from the main lever 12, only the main lever is returned automatically, the pilot gas valve 16 is closed through the return of the main lever 12 and the pilot burner 3 is extinguished.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas cutting machine, which is capable of automatic ignition, and by operating the lever twice, oxygen and gas are released to the pilot burner and the crater. It has the following advantages: only the gas that is present can be stopped within a few seconds after opening, and the oxygen and gas for fusing can be controlled individually by operating a lever provided separately.

In conventional gas cutting machines, the pulp (knobs) for adjusting oxygen and gas leading to the crater are each attached independently, and these adjustments require operating each pulp individually. It takes time and skill to operate the pulp during preheating and fusing, and in order to ignite, another valve operation is required, and a separate lighter must be used to ignite, which is time-consuming. This method has the drawbacks of being troublesome and dangerous when working at heights.

In view of this, it is an object of the present invention to propose a gas cutter that is capable of automatic ignition and adjustment of the nozzle (preheating, fusing adjustment) by hour wheel operation.

The present invention will be described in detail below.The gist thereof is that it consists of a pilot burner installed facing the crater and a spark plug that discharges electricity in conjunction with the operation of a main adjustment mechanism, which will be explained later, to ignite the pilot burner. an ignition mechanism, a pipe mechanism that connects a gas pipe that supplies oxygen and dregs to the crater and a pilot gas pipe that supplies gas to the pilot burner; A main adjustment mechanism that adjusts the preheating oxygen and gas leading to the pilot burner and the gas leading to the pilot burner, and then returns manually or by a spring to the original state and stops only the gas leading to the pilot burner. Although they are opened in conjunction with each other, the closing operation requires a separate manual operation or a return operation using the tin ring tail, and it is possible to increase the amount of oxygen for preheating and gaseous oxygen for fusing, or to reduce this increased amount. This is a gas cutter consisting of a jet gas adjustment mechanism, and when starting blowing, the main adjustment mechanism is operated with a lever to send oxygen and gas to the crater and pilot burner, and at the same time apply electricity and pressure to the spark plug. After defrosting, first ignite the pilot burner, then ignite the crater. The pilot burner's flame will go out when it is ignited on the crater side. The flame at the crater is a preheating flame in this state, and after the preheating is completed, the shared gas adjustment mechanism is operated to create a jet flame at the crater and the #cutting operation is performed. When finishing the fusing operation, the jet gas adjustment mechanism is operated, and when also finishing the preheating operation, the auxiliary adjustment mechanism is operated.

Next, an embodiment of the present invention will be described in detail based on the accompanying drawings. 1 is the main body of the fusing machine, 2 is the crater 17, and this population 2 is perpendicular to the main body 1 as shown in FIG. The pilot bar 3 and the ignition mechanism 1jjV from the spark plug 4 face in the vicinity. 5 is an oxygen inlet formed on the opposite side of the crater 20 in the main body 1, 6 is an acetylene gas inlet, 7 is an oxygen population 5 and an acetylene gas inlet 6
and the pipe machine 41k that communicates between the crater 2 and the crater 2, 8
is an oxygen gas pipe, 9 is an acetylene gas pipe, and 10 is a pilot burner leading to the above-mentioned iron burner O.

Reference numeral 11 denotes an auxiliary valve located on the left side of the king lever 12 when the main lever 12 is rotated to the left as shown in the figure above. Renoku- (auxiliary adjustment machine m) 1
3 rotates together to form the oxygen valve 14 shown in FIG. The gas valve 15 and the pilot gas valve 16 are simultaneously opened to allow oxygen and gas to flow into the crater and the pilot gas burner 3, and at the same time, the piezoelectric ignition mechanism a operates to generate a voltage 17.
This voltage is applied to the spark plug 4 to ignite the pilot burner 3, and then the nozzle 2 is ignited. In the embodiment, when the main lever 12 is released, the main lever 12 is automatically returned to its normal position, and the return of the main lever 12 closes the pilot gas valve 16 and extinguishes the pilot bar 6. This state of pilot flame extinguishing is the state of preheating use. 17 is a jet gas adjustment mechanism, and when this lever 1z is operated, the jet gas valve 18 opens, and the jet gas passes through one of the oxygen pipes 8 and reaches the crater 2, allowing it to be fused. becomes. When the jet lever 17 is returned to its original position, the jet gas stops. In addition, the jet gas valve is ON.
, OFI+□ opening/closing, or a combination with a needle valve, etc. may be used to adjust the gas amount.

Note that when the auxiliary lever 13 is returned to its original position either manually or by a spring, the oxygen and gas reaching the crater 2 will stop. In addition, in the embodiment, for safety reasons, consideration was given so that the gas was turned off first and the oxygen was turned off later.

As described above, in the present invention, when the main lever 12 is turned in the opening direction, the auxiliary lever 13 is also rotated I, opening the oxygen and gas and pilot gas valves i4, 1516, and the piezoelectric ignition mechanism is activated. Since the burner 3 is automatically ignited and then the crater 2 is ignited, there is no need to use a lighter each time for ignition, which is convenient and safe for work at high places.

Next, the main lever 12 dynamically returns to its original position after the opening operation, closes the pilot gas valve 16, and extinguishes the pilot flame each time, so there is no waste).

Next, by operating the jet lever 17, the jet gas is ejected from the crater 2, so it is very convenient to handle oxygen paralyze one by one, rather than by hand.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a gas cutting machine according to the present invention, FIG. 2 is a partially cutaway front view, and FIG. 3 is a front view of the main adjustment mechanism. DESCRIPTION OF SYMBOLS 1... Fusing machine main body, 2... Crater, 6... Pilot burner, 4... Spark plug, 7... Pipe mechanism,
11... Main adjustment mechanism, 12... Main lever, 16...
・Auxiliary lever, 14...Oxygen valve, 15...Gas valve, 16...Pilot gas valve, 17...
Jet valve, 18...Jet gas valve. Patent applicant: Soji Kobayashi

Claims (1)

[Scope of Claims] An ignition mechanism comprising a pilot burner mounted facing the crater and a spark plug that discharges in conjunction with the operation of a main adjustment mechanism to be described later to ignite the pilot burner; A pipe mechanism consisting of a gas pipe for supplying oxygen and gas to the pilot burner, and a pilot gas pipe for supplying gas to the pilot burner, and a preheating oxygen pipe between the oxygen and gas inlet and the pipe mechanism, leading to the crater. and the main adjustment mechanism that adjusts the gas leading to the pilot burner and the gas leading to the pilot burner, and after the opening operation returns to its original state by the flat type j1 or by the spring and stops only the scum reaching the pilot burner.Opens in conjunction with the opening operation of the main adjustment mechanism. However, the closing operation is separately manually operated, or the gas cutting machine consists of a jet gas adjustment mechanism for increasing the amount of oxygen for cutting by a spring or reducing the amount of oxygen for blowing.