JPS6039928B2 - Automatic gas supply adjustment device for gas automatic cutting machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that spindles that open and close flow passages for suitable fuel gas, heating gas, and cutting oxygen, respectively, and microswitches that control the stoppage of the trolley are arranged in a row, and each spindle A lever shaft is equipped with an eccentric cam iron-mounted to the microswitch to apply pressure at the appropriate time, and by rotating the lever shaft to a set angle using a lever, ignition → heating → cutting (driving the trolley) → extinguishing (stopping the trolley) ) This relates to an automatic gas supply adjustment device for an automatic gas cutting machine that can perform repeated operations.

Conventionally, gas cutting work on objects to be cut has been carried out through the steps of lighting a torch, adjusting the flame, and cutting.
Adjusting the flame is a very troublesome task even for a highly skilled person, and when cutting continuously and repeatedly, it is necessary to continuously scrape the flame without stopping the supply of heating gas and heating oxygen. To prevent this type of gas and time consumption, use a solenoid valve or
Alternatively, a simple method has been used in which only the heating oxygen and fuel gas are adjusted, but each method has its advantages and disadvantages, including being extremely uneconomical due to resource shortages and rising material prices.

The present invention aims to solve the above-mentioned drawbacks by easily adjusting the gas supply and operating the truck by rotating a lever shaft to which an eccentric cam is iron-mounted by operating a lever. , its configuration will be explained by referring to embodiments shown in the drawings.

In the figure, 1 is an adjusting device main body having an appropriate shape, and a case body 2 is mounted on the outer side of the adjusting device main body 1, and
On one side are the hose connection fittings 13 for injecting fuel gas G and the hose connection fittings 20 for oxygen S, and on the other side are the hoses 62, 63, and 64 for connecting to the torch 69. The connection ports 45, 49, and 53 of the micrometer are made to protrude, respectively, and a connection fitting 58 for connecting to the pilot nozzle 61 is iron-bonded on the other side and connected with the pilot hose 60. A connection line 71 is provided to connect the switch 73 and the metal outlet switch 72, and the lever 7 having the grip part 8 is projected to the upper part of the case body 2.

3 is a lever shaft provided in the case body 2 in the shape of a machine shaft, and biased D cams 4, 5, and 6 are mounted at the center of the lever shaft 3 and on both sides thereof at equal intervals, and directly below the lever shaft 3. An eccentric cam 74 capable of contacting the microswitch 73 is provided at one end of the lever shaft 3, and a lever 7 having a gripping portion 8 at the upper end is mounted at the middle of the lever shaft 3. It turns around with 3.

Reference numeral 9 denotes a connecting body for sending the fuel gas G to the gas valve 66 and the pilot valve 65 through the flow path 14, the connecting hole 25, and the flow path 48 provided in the adjustment device main body 1; The outer circumferential part 1 is provided with a threaded part 10 to enable the screw to be connected to the adjustment device body 1, and a through hole 11 is provided inside, and a hose connection fitting 13 is provided at the end.
This is a modified form of the continuous fastening fitting 12 that connects the two.

14 is a flow path provided in the adjustment device main body 1,
The flow passage 14 is configured to send the fuel gas G injected from the connecting body 9 to the flow passage 48 on the opposite side via the connection hole 25.

15 is a valve 6 which cuts off oxygen S through a flow path 18 provided in the adjustment device main body 1, a connecting hole 47, and a flow path 56.
8 and a saddle body for feeding into the heating valve 67,
A threaded portion 46 is provided on the outer periphery of the connecting body 15 to enable a fly iron to be connected to the adjusting device main body 1, a through hole 17 is bored inside, and a connecting fitting 19 is provided at the end of the connecting body to which a hose connecting fitting 20 is connected.
It is screwed on.

Reference numeral 21 denotes a cap screwed onto the lower part of the adjusting device main body 1, and the inside of the cap 21 forms a recess 21A, and an elastic body 2 for placing the spindle 24 in the recess 21A.
Built-in 2.

23 is a spindle 24 installed inside the adjustment device main body 1
The sealing material 23 is a sealing material that further prevents gas leakage, and prevents the gas G in the flow path 14 from flowing out to the connection hole 25.

Reference numeral 24 denotes a spindle installed vertically in the adjusting device main body 1, and when the head of the spindle 24 is pressed against the eccentric cam 4 by operating the lever bar 7, the spindle 24 descends and the gas G passes through the communication hole 14 and flows into the connection hole 25. When the gas G is not used, the spindle 24 is pushed upward by the repelling force of the elastic body 22, and the sealing material 23 maintains the airtight state.

Reference numeral 27 denotes a spindle stopper screwed into the upper part of the adjusting device main body 1 by a screw portion 26, and a sealing material 28 for preventing gas G from leaking is provided inside the spindle stopper 27.

Reference numeral 29 denotes a cap screwed onto the lower part of the adjustment device main body 1, and the inside of the cap 29 forms a recess 29A, and the recess 2
The elastic body 30 on which the spindle 24 is mounted is built into the spindle 9A.

31 is installed inside the adjustment device main body 1 and is connected to a spindle 32.
The sealing material 31 is used to prevent oxygen S from leaking through the lotus through hole 33.

Reference numeral 32 denotes a spindle provided vertically within the adjusting device main body 1. The eccentric cam 5 presses against the head of the spindle 32 by operating the lever 7, and when the spindle 32 is pushed down, the flow path 51 is opened.
Oxygen S passes through the lotus passage hole 33 and flows out to the flow path 52 side, and when oxygen S is not used, the rebound force of the elastic body 22 pushes the spindle 32 upward and maintains the sealed state with the sealing material 31. It is something to do.

Reference numeral 35 is a spindle stop screwed onto the upper part of the adjusting device main body 1 by a screw portion 34, and a sealing material 36 is provided inside the spindle stop 35 to prevent leakage of oxygen S. .

37 is a cap screwed into the lower part of the adjusting device main body 1, and the inside of the cap 37 forms a recess 37A, and the recess 3
7A has a built-in elastic body 38 for mounting the spindle 24.

39 is a spindle 40 installed inside the adjustment device main body 1.
The sealing member 39 prevents oxygen S in the flow path 55 from flowing out into the connecting hole 41.

4. Oxygen S passing through the flow passage 55 is connected by operating the spindle 40 and the lever 7 of the spindle installed vertically in the adjustment device main body 1 so that the eccentric cam 6 presses the head and descends. When the oxygen S passing through the hole 41 and flowing out to the flow path 56 side is not used, the repulsive force of the elastic body 38 pushes the spindle 40 upward and the sealing material 39 maintains the sealed state.

Reference numeral 43 denotes a spindle stop screwed onto the upper part of the adjusting device main body 1 with a threaded portion 42, and a sealing material 44 for preventing leakage of oxygen S is provided inside the spindle stop 43. .

45 is a flow path 48 bored inside the adjustment device main body 1.
It is a connection port for sending gas G through the connection port, and is provided with a screw portion 46 that allows the tip of the connection □45 to be screwed into the adjustment bag counterfeit body 1, and has a threaded portion 46 inside. A flow path 48 and an outflow hole 47 are provided to allow the fuel gas hose 62 to be connected to the end of the pond.

Reference numeral 49 denotes a connection port through which oxygen S is sent through a flow path 52 bored inside the adjustment device main body 1;
9 to the adjusting device main body 1.
0, a flow path 52 and an outlet 51 are provided inside for a water outlet, and the other end can be connected to a heating oxygen hose 63.

Reference numeral 53 denotes a connection port through which oxygen S is sent through a flow path 66 protruding from the inside of the adjustment device main body 1;
3 has a screw portion 5 that can be screwed into the adjustment device main body 1.
4, a flow path 56 and an outflow hole 55 are provided inside, and the other end can be connected to an oxygen hose 64 for cutting.

Reference numeral 57 denotes an outflow port drilled in the side of the adjustment device main body 1, and the outflow port 57 communicates with the flow passage 14, and is connected to the connecting fitting 58.
A pilot hose 60 is fixed with a connecting fitting 59 that can be attached easily, and has a pilot nozzle 61 at its tip.
It connects.

Reference numeral 62 denotes a fuel gas hose that connects the torch 69 and the adjustment equipment main body 1, and the gas hose 62 can be adjusted by a gas valve 66.

Reference numeral 63 denotes a heating oxygen hose that connects the torch 69 and the adjustment device main body 1, and the hose 63 can be adjusted by a heating valve 67.

Reference numeral 64 denotes a cutting oxygen hose that connects the torch 69 and the adjusting device main body 1, and the hose 64 can be adjusted by a cutting oxygen valve 68.

Reference numeral 69 designates a torch in which three hoses 62, 63, and 64 are connected, and a pilot nozzle 61 having a pilot hose 60 at the end is installed 7 degrees close to the crater.

Reference numeral 71 is a connecting cable rope having one end connected to a metal outlet 72, and the other end of the cable cable 71 being a microphone built into the adjustment device main body 1.

It is connected to a switch 73, and when the lever 7 is operated, a motor (not shown) is used to operate the cart of a known automatic cutting machine.
The present invention has the configuration described above, and the following operations will be explained. When using the present invention, the device is fixed on the trolley of a gas automatic cutting machine of Kosanku with the lever 7 set to the A position, and the torch 69 is set to the cutting position. Because of this position, gas does not leak out and the valve remains closed.

After that, when the lever 7 is rotated to position B, the fuel gas and heating oxygen flow path is closed by pressing down the corresponding spindle with the corresponding eccentric cam, and the fuel gas and heating oxygen flow path is closed. It flows out through the process.

In this case, the eccentric cam of the cutting oxygen does not come into contact with the corresponding spindle, which does not move downward, but lever 7
When the spindle is rotated to position C, the spindle is lowered and oxygen flows out to each hose.

That is, when the present invention is installed in a gas automatic cutting machine, the pilot nozzle 61 is first ignited, the lever 7 is rotated from A to B to ignite the torch 69, and the torch 69 is set to a heating valve suitable for heating the material to be cut. Adjust the flame by pressing bar 7.
Turn the lever from B to C position to supply oxygen for cutting, adjust the flame suitable for cutting with the cutoff valve, and at the same time activate the micro switch 73 with the eccentric cam provided on the lever shaft 3, then turn the lever 7 to position A, extinguish the torch 69 to complete work preparations, connect the travel operation switch of the gas automatic cut-off machine to the microswitch 73, turn on the operation switch, and move the rear lever 7 from A to B. , and start igniting and heating the torch 69. Next, turn the lever 7 from B to C. The micro switch 73 is activated, and the cart of the gas automatic cutting machine runs, and the cutting process is performed using the cutting flame. is carried out, and when the lever 7 is returned from C to B after cutting is completed, the microswitch 73 is turned OFF and the cart stops, the torch 69 is extinguished and the pilot nozzle 61 is lit, and the cycle of cutting work is completed. The cutting operation is performed repeatedly intermittently and continuously. Next, to explain the effects of the present invention, the operations of ignition → heating → cutting (driving the trolley) → extinguishing (stopping the trolley) can be performed repeatedly by one-touch operation of the chopper bar of the present invention. This eliminates all the work complexity, reduces the amount of gas used and processing time, and allows one worker to operate multiple gas automatic cutting machines, saving labor and improving work efficiency. is significantly improved.

In addition, the present invention uses a cam for the spindle opening/closing mechanism, so the operation of the test bar is extremely light and smooth, and the operation is easy, so even an amateur can easily handle it once the gas is adjusted. This has advantages such as the ability to generate gas, and since the gas shield around the spindle has a double structure, it has excellent practical effects such as no gas leakage.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the present invention, Fig. 2 is a side view showing a partial cross section, Fig. 3 is a front view showing a partial cross section, Fig. 4 is a rear view showing a cross section, and Fig. 5 is a top view. FIG. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 Spindles 24, 32 that can be slid up and down to open and close communication passages for fuel gas, heating gas, and cutting oxygen;
40 are arranged in a row, and the lever shaft 3 is placed directly above the spindles 24, 32, 40 and is parallel to the spindle rows. 2, and eccentric cams 4, 5, 6 are fitted to the lever shaft 3 at positions corresponding to the upper ends of the spindles 24, 32, 40, and the rotation angle set by the lever 7 is rotated. spindles 24, 32, 40 as appropriate.
The gas automatic vehicle is characterized in that an eccentric cam 74 is fitted to the lever shaft 3 and is linked to a micro switch 73 that controls running and stopping of the truck. Automatic gas supply adjustment device for cutting machines.