JPH0321818Y2 - - Google Patents

Description

[Detailed description of the invention] - Industrial application field This invention relates to a torch holding structure in a fusing machine such as a gas cutting machine or a plasma cutting machine.

・Conventional technology When cutting materials vertically with a plasma cutting machine,
Alternatively, when cutting a material while processing a welding groove with a fusing machine, the cutting torch must be set at an angle and the torch must be held so that the direction of the inclination is always perpendicular to the direction in which the torch travels. . Further, in this case, since water pipes, gas pipes, electric cords, etc. are connected to the torch, it is necessary to hold the torch itself so that it does not rotate even if the torch turns so that these do not get twisted.

As such a torch holding structure,
Structures described in Publication No. 16459 and Japanese Utility Model Publication No. 53-8025 are known. In the former, an inclined hole is provided in a torch holder rotatably provided on a cart, and the torch is rotatably fitted into the inclined hole. However, with this structure, the inclination angle of the torch cannot be freely changed, and the torch The disadvantage is that repeated torsional forces act on the pipes and cables connected to them, causing them to fail due to fatigue. In addition, in the latter case, a holding block is attached to an arcuate guide provided at the tip of an arm extending downward, and a torch holder for holding the torch is rotatably provided on the holding block, and the torch holder and a trolley that pivotally supports the arm are attached to the holding block. This method is connected by a gear mechanism to prevent the torch from rotating, but it has the disadvantage of a complicated structure, and when a sensor for detecting the material to be cut is provided, it is difficult to hold the sensor. This has the disadvantage that a separate member must be provided.

・Problems that the invention aims to solve This invention allows the inclination angle of the torch to be set freely, without applying torsional force to the pipes or cables connected to the torch, and without applying any torsional force to the pipes or cables connected to the torch. By providing a holding structure that can prevent the torch from rotating without using any special mechanism, and also allows material detection sensors, etc. to be easily placed around the torch and in the direction of movement, the above-mentioned problems of conventional devices are solved. It was done for the purpose of

・Means for solving the problem The structure adopted by the present invention to solve the above problem will be explained using the reference numerals of the illustrated embodiment.The torch holding structure of the present invention is parallel to the material 34 to be cut. A dolly 1 that moves within a two-dimensional plane is provided with a fixing ring 2 parallel to the plane, and a support guide 6 is provided at a distance on the opposite side of the center of the ring, and an arcuate guide 8 is provided in the fixing ring 2 in the diametrical direction. The holding block 9 is attached to the circular arc guide 8 so as to be able to slide and be fixed at a predetermined position by fitting the rotary ring 7 mounted thereon, and the torch holder 11 that holds the torch 12 is attached to the holding block 9 on the circular arc guide 8. The base of the torch holder 11 is connected to the supporting guide 6 by means of a flexible pipe 13.
It is connected to.

・Function In the above configuration, the inclination angle of the torch 12 can be arbitrarily set by sliding the holding block 9 along the arcuate guide 8, and the pipe or cable 14 connected to the torch can be moved to the flexible pipe 13. By connecting the pipe or cable 14 to the torch 12 through the flexible pipe 12, the pipe or cable 14 is guided spatially, and rotation of the torch 12 is prevented by the torsional resistance of the flexible pipe 13, so that no torsional stress is applied to the pipe or cable 14. can be avoided. In addition, flexible pipe 13
Since rotation of the torch 12 is prevented simply by connecting the torch holder 11 and the support guide 6, the structure becomes extremely simple. Furthermore, since the fixed ring 2 and the rotating ring 7 are located around the torch 12, for example, if it is desired to provide a sensor 18 for detecting the material to be cut around the torch, it is necessary to place the sensor 18 around the torch. Since it can be attached to the bottom, various sensors can be attached easily.

-Example Next, the illustrated example will be described. In the figure, 1
2 is a dolly that moves on a two-dimensional plane parallel to the table surface on which the material to be cut 34 is placed by a guide mechanism (not shown); 2 is a fixing ring fixed to the dolly 1; 3 is a guide post installed on the dolly 1; 4 is an arm that is slidable up and down and can be fixed at a desired position with a set screw 5; 6 is a support guide provided at the tip of the arm 3; 7 is a rotating ring fitted inside the fixed ring 2; A circular arc guide is fixed to the rotary ring 7 at both ends and mounted in the diametrical direction of the rotary ring 7; 9 is a holding block provided slidably on the circular guide 8 and fixed at a desired position; 10 is a holding block 9; An integrated holding bracket, 11 is a torch holder attached to the holding bracket 10 so as to be freely rotatable in the radial direction of the arc guide 8, 12 is a torch fitted and fixed to the torch holder 11, and 13 is an upper end attached to the support guide 6 and a lower end attached to the torch holder 11. 14 is a gas pipe connected to the torch 12 through the hollow hole of the flexible pipe 13, and 15 is a fixing ring 2.
a sensor retaining ring fitted so as to be able to rise and fall freely, 16
18 is a sensor attached to the tip of the bracket 16; and 19 is an electric motor for rotationally driving the rotary ring 7.

A suitable number of horizontal rollers 20 and vertical rollers 21 are pivotally attached to the fixed ring 2 on the circumference.
The rotating ring 7 is supported by these rollers 20,21. A ring-shaped timing pulley 22 is fixed to the rotating ring 7, and a timing belt 2 is connected between this timing pulley 22 and a timing pulley 23 provided on the output shaft of the electric motor 19.
4 is on the rack. The arc guide 8 consists of two arc members 8 mounted in parallel as shown in FIG.
A ball 26 provided on the holding block 9 is fitted into an arcuate groove 25 provided on the opposing surface of the holding block 9 to slidably support the holding block 9. A screw 28 having a knob 27 is inserted into the holding block 9, and a nut member 29 is screwed onto the tip of the screw 28. By tightening the screw 28, the nut member 29 is attached to the arc members 8a, 8a.
The retaining block 9 can be fixed at a desired position by fastening the retaining block 9.

A rotating ring 30 is fitted below the fixed ring 2, and this rotating ring 30 is provided with an inclined groove 31 as shown in FIG. 4, and a vertical guide groove 32 is provided on the fixed ring 2 side. sensor holding ring 15 fitted inside the rotating ring 30
A pin 33 implanted in is loosely fitted into the inclined groove 31 and the guide groove 32. The rotating ring 30 is provided with a sliding lever (not shown), and when the rotating ring 30 is rotated with this sliding lever, the pin 33
is raised and lowered guided by the inclined groove 31 of the rotation ring 30, and the height of the sensor 18 is adjusted. The four sensors 18 are arranged on the circumference, and detect the height from the material to be cut 34 to maintain the tip of the torch 12 at a constant height from the material to be cut 34. The function is to detect the edges of the material and the parts where material has already been removed. The height of the torch 12 is adjusted by moving the cart 1 up and down by a mechanism not shown. The height of the sensor 18 is adjustable so that the distance between the tip of the torch 12 and the material to be cut 34 can be adjusted, and the sensor holding ring 15 and the sensor are held together. The reason why the vibration isolating rubber 17 is interposed between the cutting bracket 16 and the cutting bracket 16 is to prevent the sensor 18 from being damaged when the sensor 18 collides with the material to be cut 34 or the like.

The flexible pipe 13 is a hollow tube made of polypropylene or the like in which perpendicular cuts are made alternately on both sides, and has flexibility and high resistance to twisting. The electric motor 19 has an arc guide 8 in the direction of movement of the trolley 1 (direction of movement of the torch 12).
The rotating ring 7 is controlled so as to always rotate in a direction perpendicular to the direction shown in FIG.

・Effects In the above configuration, move the holding block 9 along the arcuate guide 8 and press the knob 2 at the desired position.
7 or the like, the inclination angle of the torch 12 can be arbitrarily set, and by rotating the rotating ring 7, the inclination direction of the torch 12 can be maintained in a direction that is always perpendicular to the direction of travel of the torch. Since rotation of the torch holder 11 is prevented by the support guide 6 via the flexible pipe 13, the gas pipe 1 connected to the torch 12
No torsional stress acts on the 4th grade. Also,
As shown in this embodiment, the sensor 18 for material detection
It is also easy to arrange the sensor 18 around the torch 12, and if the sensor 18 is attached to the rotating ring 7, it is easily possible to always position the sensor 18 on the line of advance of the torch 12.

As described above, according to the present invention, it is possible to provide a holding structure for a fusing torch that solves the problems of the conventional means with a simple structure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view taken along the line A-A in Fig. 2, Fig. 2 is a plan view with the support guide portion omitted, and Fig. 3 is a sectional view taken along the line A-A in Fig. 2. FIG. 1 is a sectional view of section B, and FIG. 4 is an explanatory diagram of the guide mechanism of the sensor holding ring. In the figure, 1 is a trolley, 2 is a fixed ring, 6 is a support guide, 7 is a rotating ring, 8 is an arcuate guide, 9 is a holding block, 11 is a torch holder, 12 is a torch, 13 is a flexible pipe, 14 is a gas pipe, 15 is the sensor retaining ring, 18 is the sensor, 2
0 is a horizontal roller, 21 is a vertical roller, 25 is an arcuate groove, 26 is a ball, 27 is a knob, 28 is a screw,
29 is a nut member.

Claims (1)

[Scope of utility model registration request] A trolley that moves within a two-dimensional plane has a fixed ring parallel to the plane and a support guide placed at a distance from the center of the ring on the side opposite to the material, and a rotary ring is rotatably fitted into the fixed ring. mounted, the rotating ring having a diametrically mounted arcuate guide;
A holding block is attached to the arcuate guide so as to be able to slide and be fixed at a predetermined position.A torch holder is fitted into this holding block so as to be rotatable around the radial axis of the arcuate guide, and the proximal end of the torch holder is attached to a flexible pipe. A torch holding structure for a welding machine, characterized in that the torch holding structure is connected to the support guide by.