JP3562859B2 - Torch structure for robot or automatic welding machine - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a torch structure in a robot or an automatic welding machine having a gripping portion gripped by a welding head of a robot arm or an automatic welding machine.
[0002]
[Prior art]
In the conventional torch, the torch body is often damaged by interference with the work or deteriorated by welding heat. See JP-A-61-67974).
[0003]
[Problems to be solved by the invention]
By the way, in the torch of the robot or the automatic welding machine, the movement locus of the torch is pre-taught as the movement locus of the gripping part. When replacing the torch body, if the front / rear position and the bending direction of the torch body are not reproduced exactly as before, the movement locus of the torch afterwards will be incorrect and accurate welding cannot be performed. There is.
In addition, since the component cable is also likely to be swung by a robot or the like, and the component cable is likely to be damaged, it is necessary to replace the component cable.
[0004]
The present invention has been made in view of the above-mentioned problems of the related art, and an object of the present invention is to make it possible to attach / detach a tote body and a component cable to / from a grip body. Can be mounted and each can be replaced very easily. In particular, the front and rear position and the bending direction of the torso body with respect to the gripper body can be reproduced exactly as before, so that welding work can be performed accurately. To provide a torch structure in a robot or an automatic welding machine.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a torch structure in a robot or an automatic welding machine according to the present invention is configured such that a gripping body is constituted by a gripping portion and protrusions before and after the gripping portion. After forming a groove in the vertical direction, forming a through hole for gas, wire, etc. at the center in the axial direction of the body, inserting a nozzle at the tip and forming a curved part in the middle of the toy body, A contact tube was extended from the end, a flange was inserted into the contact tube and abutted on the rear end, and a flange was attached to the toy body, and both side surfaces of the flange were cut to the width of the groove. A cut surface is formed, a tubular connector is continuously provided at the tip of the component cable, a connection block for co-fastening is arranged on the outer periphery of the component connector, and the connection block is held on the component cable side. Franc attached to the rear end of the body Is inserted into the groove on the tip end surface of the gripping body, and the contact tube is connected to the gripping body in a state where the contact tube is communicated with the through hole in the gripping body. Are fixed together, and jointly fastened by a connection block held on the component cable side with the rear protruding portion of the grip portion body inserted into the cylindrical connector.
[0006]
[Action]
Since the torch structure is used in the robot or the automatic welding machine configured as described above, when replacing the torch body with the grip part body, first, the grip part body and the contact tube need to be replaced. By unscrewing the knob, the toe body can be easily pulled out of the grip body and separated. Next, prepare a new toy body of the same shape, and insert the contact tube of the toy body into the toe body while inserting the contact tube into the grip body. The front and rear positions and the bending directions of the toe body with respect to the grip body are determined by contacting the side surfaces of the formed flange and the flange surface with the tip surface of the grip body in the groove. Therefore, in this state, the contact tube is tightened and fixed by the grip body, and the arrangement of the new toy body is reproduced in the same manner as the toy body before replacement.
[0007]
Also, when replacing the component cable with the gripping body, first remove the joint between the gripping body and the tubular connector by the connection block, so that the component cable can be replaced with the gripping body. -Can be easily pulled out and separated. Next, a new component cable is prepared, the cylindrical connector connected to the tip of the component cable is placed in the connection block, and the rear protruding portion of the gripping body is inserted into the cylindrical connector. Then, tighten the connection block and fasten the gripping body and the cylindrical connector together.
[0008]
【Example】
1 to 4 relate to one embodiment of the present invention. FIG. 1 is a sectional view of a main part of a torch according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 4 is a sectional view taken along line BB of FIG. 1, and FIG. 4 is a sectional view taken along line CC of FIG.
[0009]
In the figure, reference numeral 1 denotes a gripping body, which comprises a large-diameter front projection 2, a medium-diameter grip 3 and a small-diameter rear projection 4. A through hole 5 for gas, wire or the like is formed at the center in the axial direction. The front protruding portion 2 and the grip portion 3 are applied for connecting the toe body 6, and the rear protruding portion 4 is applied for connecting the component cable 7, respectively. The outer periphery of the grip portion 3 is covered with a cylindrical body 8 made of an elastic material such as rubber, and the grip body 1 is welded by a robot arm or an automatic welding machine (not shown) via the cylindrical body 8. It is seized by the head.
[0010]
A casing 9 for accommodating the front protruding portion 2 of the grip portion body 1 is disposed in front of the cylindrical body 8, and the casing 9 is moved by a pin 10 with respect to the grip portion body 1. Is stopped. A window 12 into which a screw 11 for fastening is inserted is formed at one lower side of the casing 9. Further, a contact tube insertion hole 13 to be described later is formed in the front protruding portion 2 and a part of the grip portion 3, and an interruption 14 is made from the hole 13 to the lower end. A vertical groove 15 is formed on the distal end surface of the protrusion 2.
[0011]
A nozzle 16 is provided at the tip of the toy body 6, and a curved portion 17 is formed in the middle of the toy body 6, and the grip is provided from the rear end of the toy body 6. A contact tube 18 extends toward an insertion hole 13 formed in the holding body 1. A flange 19 is mounted on the torch body 6 so as to pass through the contact tube 18 and abut on the rear end of the torch body 6. Both sides of the flange 19 are provided with cut surfaces 20 and 20 which are cut so as to have substantially the same width as the vertical groove 15 of the tip end surface of the gripping body 1. Is fitted into the groove 15 and the flange surface is brought into contact with the bottom surface of the groove 15.
[0012]
Further, a tubular connector 21 into which the rear protruding portion 4 of the grip portion body 1 is inserted at the time of assembling is connected to the distal end portion of the component cable 7, and the tubular connector 21 is fastened together. Is connected to the connection block 22. The connection block 22 is held by the component cable 7 via a cover 23 that covers the outer periphery of the component cable 7. A window for inserting a screw 24 for fastening together is provided on one lower side of the connection block 22. 25 are formed. The connection block 22 has a hole 26 for holding the tubular connector 21 and an interruption 27 from the hole 26 to the lower end.
Reference numeral 28 denotes an insulating plate which forms a side frame of the grip part 3 of the grip part body 1, and 29 denotes a lid which covers the front surface of the casing 9.
[0013]
In the torch structure of the robot or the automatic welding machine having the above configuration, the gripping portion 3 of the gripping body 1 is usually gripped by the robot arm or the welding head of the automatic welding machine. Move along a locus of movement that has been taught in advance, and perform welding work on the nozzle 16 side. When the torch body 6 needs to be replaced, first, the screw 11 is loosened to release the front projection 2 of the grip body 1 and the contact tube 18 so that the torsion is fixed. -The body 6 can be easily pulled out from the grip body 1 and separated. Next, a new toe body 6 having the same shape is prepared, and the contact tube 18 of the toe body 6 is inserted into the hole 13 in the torso body 1 and the front of the torso body 1 is inserted. By contacting the side surfaces 20, 20 of the flanges 19, 19 mounted on the toe body 6 with the groove 15 on the distal end surface of the protruding portion 2 and bringing the flange surface into contact with the bottom surface of the groove 15, Since the front and rear positions and bending directions of the body 6 with respect to the grip body 1 are determined, the screw 11 is tightened in this state, and the contact tube 18 is tightened and fixed with the front protruding portion 2 of the grip body 1. Then, the new tooth board 6 is reproduced in the same arrangement as the old tooth board 6 before the replacement.
[0014]
When it is necessary to replace the component cable 7, first, loosen the screw 24 to release the joint between the rear projecting portion 4 of the gripping body 1 and the tubular connector 21 by the connection block 22. Thereby, the component cable 7 can be easily pulled out from the grip body 1 and separated. Next, a new component cable 7 is prepared, and the cylindrical connector 21 connected to the tip of the component cable is placed in the connection block 22 and the rearward projection of the grip part body 1 is inserted into the cylindrical connector 21. With the part 4 inserted, the connection block 22 is tightened with the screw 24, and the gripping body 1 and the tubular connector 21 are tightened together, thereby completing the replacement of the component cable 7.
[0015]
【The invention's effect】
According to the present invention, in a state where the grip body is gripped by the welding head of the robot arm or the automatic welding machine, the torch body is formed by the side surface of the flange mounted on the grip body. The positioning of the body is not changed before and after the replacement of the body, since it is accurately positioned in the groove and fastened to the handle body in the same bending direction. The arrangement of the torch body with respect to the torso can be surely reproduced, and the torch structure in a robot or an automatic welding machine capable of accurately performing a welding operation is obtained.
[0016]
In addition, since the component cable can be easily replaced with respect to the gripping body, a torch structure for a robot or an automatic welding machine capable of coping with breakage or deterioration of the component cable is provided.
[0017]
The above-mentioned replacement simply requires loosening the screw, attaching a new torch body or component cable and tightening the screw, so that the torch structure in a robot or an automatic welding machine which is easy and easy to replace. It becomes.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of a torch according to the present invention.
FIG. 2 is a sectional view taken along line AA of FIG. 1;
FIG. 3 is a sectional view taken along line BB of FIG. 1;
FIG. 4 is a sectional view taken along line CC of FIG. 1;
[Explanation of symbols]
1 Body of grip part
2 Front protruding part of gripping part body 3 Grasping part body-grasping part 4 Rear protruding part of gripping part body 5 Through hole for gas, wire, etc. 6 Torch body
7 Component cable 11 Tightening screw 15 Vertical groove 16 Nozzle 17 Curved portion 18 Contact tube 19 Flange 20 Cut surface 21 Cylindrical connector 22 Connection block 24 Joint screw

Claims (1)

In a torch structure of a robot or an automatic welding machine having a gripper body gripped by a welding head of a robot arm or an automatic welding machine,
The gripping body is constituted by a gripping portion and front and rear protrusions, and a vertical groove is formed in a front end surface of the front protrusion, and gas and wires are formed at the center in the axial direction of the body. -Forming through holes such as
A contact tube is extended from the rear end of the toy body having a nozzle provided at the tip and having a curved portion formed on the way, and a flange is inserted through the contact tube to abut on the rear end. Attached to the Tivode, forming a cut surface on both sides of the flange cut to the width of the groove,
A cylindrical connector is continuously provided at the tip of the component cable, a connection block for co-fastening is arranged on the outer periphery of the cylindrical connector, and the connection block is held on the component cable side,
The flange attached to the rear end of the torch body was inserted into the groove on the tip end surface of the gripping body, and the contact tube was communicated with the through hole in the gripping body. In this state, tighten and fix the contact tube with the grip body.
With the rear protruding part of the grip part body inserted into the cylindrical connector, they are fastened together by a connection block held on the component cable side,
A torch structure for a robot or an automatic welding machine.

Images