JPS6237725B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an oxygen flame used for welding, cutting, silver brazing, etc. in the production and repair of small and dense metal products such as precious metal accessories and precision instruments, and their parts. It is related to blowpipe.

[Prior Art] Conventionally, this type of oxygen flame blowpipe capable of injecting and forming a combustion gas oxygen flame has two introduction tubes for supplying two gases, fuel gas and oxygen, to the blowpipe body from the outside. A tube was attached.

[Problems to be Solved by the Invention] This makes it difficult to carry and move, making it difficult to handle. Furthermore, since the blowpipe body is large, it is not suitable for welding, cutting, silver brazing, etc. of dense and fine objects.

An object of the present invention is to provide a gas cylinder portable oxygen flame blowing tube that requires only one inlet pipe, is easy to carry and move, and is easy to handle.

[Means for Solving the Problems] In order to achieve the above object, the portable oxygen flame blowing tube containing a gas cylinder of the present invention includes a grip portion whose interior is a fuel gas cylinder, and a rotatably attached to the tip of the grip portion. a gas communication path for supplying fuel gas from the gas cylinder to the nozzle;
an oxygen communication path for supplying oxygen to the nozzle; a flow rate control valve provided in each of these communication paths;
A configuration including a mechanism for simultaneously opening and closing these two valves was adopted.

[Function] It can be used by simply attaching the oxygen introduction pipe to the blowpipe body, and both the fuel gas and oxygen supply paths can be opened and closed at the same time. It can be used immediately after ignition without adjusting from a large flow rate to a small flow rate desired for the work. In addition, since the direction of the flame can be changed freely when used hand-held or when installed stably, it has excellent workability and is easy to use even for left-handed people.

[Example] The present invention will be described based on an example shown in the drawings.

1 is a grip made by cutting a pipe made of stainless steel to a predetermined length, closing both end faces, and using the inside as a fuel gas cylinder 2. Inside, there is an oxygen supply pipe 3 extending in the axial direction.
is provided. Further, on the outside of the grip portion 1, a cylindrical anti-slip rubber 1A having a plurality of vertical and horizontal grooves is attached. Reference numeral 4 designates a fuel gas injection port provided on the rear end surface of the grip portion 1 and having a known structure used in commercially available gas lighters and the like. Reference numeral 5 denotes a fuel gas flow rate control valve attached to a fuel gas port 51 provided on the tip end surface of the grip portion 1, and is a rotary type having a known structure used as a gas control valve in commercially available gas lighters. It has a cylindrical external shape. This control valve 5 has an opening/closing pipe 53 that protrudes upward in the direction of the central axis and opens the valve when pulled up.A control lever 52 is attached to the outer surface, and when the lever 52 is moved, the gas control valve is opened. By rotating 5, the flow rate of fuel gas can be adjusted from 0 to the maximum. 6
is an oxygen flow rate control valve attached to an oxygen port 61 provided on the distal end surface of the grip portion 1, and has a known structure used as a gas control valve in commercially available gas lighters and the like. This control valve 6 has a rotary cylindrical shape, and an opening/closing tube 63 that protrudes upward in the direction of its central axis and opens the valve when pulled up.
A control lever 62 is attached to the outer surface of the oxygen control valve 6.
The oxygen flow rate can be adjusted from 0 to maximum by rotating the . 7 is a burner part mounting board welded to the tip surface of the grip part 1;
The rotary burner part 8 is attached to a burner part attachment part 71 which has both ends bent in the axial direction of the grip part 1 and has a long bent shape with a rounded tip. The burner section 8 is composed of a base 9, a rotating base 10, a rotating shaft 11, and a nozzle section 12. The rotary base 1 is inserted through the rotating shaft 11 of the rotary base 10.
The rotary shaft 11 is screwed to the mounting plate 71 so that the rotary shaft 11 can slide in close contact with the base 9. The cap 9 is thick and cylindrical, with a circumferential groove 91 carved concentrically with the center hole on one circumferential surface, and a fuel gas introduction pipe 92 and an oxygen introduction pipe 93 attached to the outside. The communication path 9 between the introduction pipes 92 and 93 and the groove 91
2A and 93A are provided. Base 10 is base 9
The circumferential shape has a cylindrical shape with a wall thickness similar to that of , and forms a ring-shaped flow path 19 corresponding to the groove 91 carved in the cap 9 on the circumferential surface of the side that closely slides on the cap 9. A spout 102 is provided in which a plurality of disc-shaped heat dissipating plates 103 (nine in this embodiment) are attached in parallel and at equal intervals to a cylinder protruding outward in the radial direction. At the tip of the spout 102, a removable nozzle opening 12 is inserted and fixed, in which a plurality of disk-shaped heat dissipating plates 121, each of which has a narrowed end of a cylindrical tube and has knurling on the outer periphery and are attached parallel to each other at equal intervals, is attached on the opposite side. It is made of 13 is a lever for opening and closing the supply of fuel gas and oxygen at the same time, and the recess 13 is provided at the upper part of both ends of the horizontal bar part of the T-shaped metal plate.
2 and 133 sandwich open/close pipes 53 and 63 protruding from the upper part of the fuel gas and oxygen control valves 5 and 6, respectively, and an elliptical plate is attached to the tip of the vertical bar bent at a right angle in the center of the vertical bar. A lever button 131 having a shape is fitted therein. Furthermore, a lever support plate 72 and a mounting plate 71, which are a part of the board 7, are located at the top of the vertical bar part.
The opening/closing pipes 53 and 63 are connected to the introduction pipes 92 and 93 of the rotary burner section 8. They are connected by respective communication tubes 54 and 64. Reference numeral 15 denotes a release switch having a function of fixing the lever 13 in the open state, and reference numeral 16 denotes a stand support plate 1 which is attached to the horizontal stay plate 14 and screwed to the plate 71.
It is a triangular stand fitted into the frame 7, and a rubber cover 161 is attached to the grounding part. 12A
and 12B are holes 14 provided on the horizontal stay plate 14.
These are the nozzle ports for a small jet of flame and the nozzle ports that are inserted and fixed into A and are widened horizontally.

In this embodiment, when the lever button 131 is pressed, the on-off pipes 53 and 63 are simultaneously pulled up and their respective valves are opened, and the fuel gas led from the cylinder 2 and the oxygen led from the pipe 3 are transferred to the control valves 5 and 63. The flow rate is adjusted by the communication tubes 54 and 6, respectively.
4. Mix in the ring-shaped channel 19 through the introduction pipes 92 and 93 and the communication channels 92A and 93A. Since this air-fuel mixture is injected from the nozzle port 12 through the communication passage 102A and the jet port 102, this injected air-fuel mixture is ignited to obtain a combustion gas oxygen flame. Lever button 1
When 31 is released, the opening/closing pipes 53 and 63 are lowered to close their respective valves and extinguish the fire. If the release switch 15 is pressed while the lever button 131 is pressed and the ignition is activated, the lever 13 is fixed in the open state, so even if the pressed lever button 131 is released, the ignition state continues. In this state, stand 16 or stand 16
If it is stably installed on a flat surface using the horizontal stay plate 14, it becomes possible to use a combustion gas oxygen flame whose direction can be freely changed without removing the flame. Furthermore, by providing heat dissipation fins at the jet port 102 and the nozzle port 12, the rotary burner section can be made compact. Furthermore, the nozzle port 12 is connected to another nozzle port (for example, the nozzle port 12
A, 12B) can be easily replaced, making it possible to easily use various combustion gas oxygen flames.

[Effect of the invention] The blowpipe for welding and fusing of the present invention has the following effects.

(b) Since the fuel gas cylinder is used as the grip, it can be used by simply attaching the oxygen introduction pipe to the blowpipe body and supplying oxygen from the outside. Therefore, when there are two introduction tubes, there is less tangle and twist of the introduction tubes, and the handling becomes easy.

(b) Since it has a mechanism that can open and close both the fuel gas and oxygen supply channels at the same time, it is easy to repeat ignition and extinguishing by adjusting the flow rates of both gases in advance.

(c) It is easy to use because it can be stably installed and used with the flame nozzle lifted up, and the direction of the flame nozzle can be changed freely.

[Effects of the Embodiment] (a) Since the nozzle opening can be easily attached and detached, fuel gas oxygen flames of various shapes and sizes can be easily formed and used by installing nozzle openings of various shapes and openings. Become.

(b) By installing multiple heat dissipation fins in the flame nozzle part, the nozzle part is shortened and the rotary burner part becomes compact, so the burner part is compact and the main body is handy. This makes it easier to perform delicate work (such as repairing a thin gold necklace) that requires a small (flame diameter of 1 mm or less) combustion gas oxygen flame.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is a right side view, Figure 3 is a plan view, Figure 4 is a perspective view of the lever and release switch, Figure 5 is a partially cutaway view of the rotary burner, and Figure 5a is the base. , FIG. 5b represents the rotary cap. In the figure, 1... Grip part, 2... Cylinder, 3... Oxygen supply pipe, 4... Fuel gas inlet, 5... Fuel gas flow rate control valve, 6... Oxygen flow rate control valve, 7... Burner part mounting board, 8 ...rotary burner section, 11...rotating shaft,
12, 12A, 12B...Nozzle opening, 13...Lever, 14...Horizontal stay plate, 15...Opening switch, 16...Stand.

Claims (1)

[Scope of Claims] 1. A grip part whose interior is a fuel gas cylinder, a flame nozzle rotatably attached to the tip of the grip part, and a gas communication path for supplying fuel gas from the gas cylinder to the nozzle. A portable gas cylinder oxygen flame blower comprising: an oxygen communication path for supplying oxygen to the nozzle; a flow control valve provided in each of these communication paths; and a simultaneous opening/closing mechanism for these two valves. 2. The portable oxygen flame blowing tube for a gas cylinder according to claim 1, wherein the flame nozzle portion is provided with heat dissipation fins made of a plurality of metal plates. 3. The portable gas cylinder oxygen flame blowing tube according to claim 1, wherein the flame nozzle is plug-in and detachable.