JP2015020198A - Shading device for automatic welding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shading device for an automatic welding apparatus that has excellent portability and is improved in operability, in view of the problems of a conventional shading device for the automatic welding apparatus in which a shading plate is of a screen-type and therefore difficult to move, and complicated to operate at the time of work-piece replacement or the like.SOLUTION: A shading sheet 3 is wound around a winding roll 6 disposed at an upper part of a frame-like frame 1, and winding and feeding of the shading sheet 3 are carried out according to a rotative direction of the winding roll 6. Rotation of the winding roll 6 is carried out by using roll driving means 10 provided on a side face of the frame 1. Compressed air is utilized to operate the roll driving means 10. Casters 4 are mounted to a leg frame 2d of a lower part of the frame 1 so that the frame 1 can be easily moved when an operator pushes the frame 1.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-shielding device for an automatic welding device that is arranged in the vicinity of an automatic welding device such as arc welding and blocks high-intensity light emitted by an arc during welding work from surrounding workers. .

  Since the light emitted from the arc at the time of welding has high brightness, the welding operation requires a light shielding means for protecting the eyes of the worker and protecting the face and body from welding burn. In this type of light shielding means, a light shielding plate having light shielding properties and nonflammability is installed to block the welding work area.

  For example, Patent Document 1 discloses a configuration in which a light shielding plate that shields an arc of a plasma welding torch is disposed in the vicinity of a manipulator as a plasma welding robot system, and an apparatus that protects an operator from the arc is disclosed. Has been.

JP 2007-30026 JP

  In the conventional light-shielding device for an automatic welding apparatus, as disclosed in Patent Document 1, a screen-type light-shielding device in which a light-shielding plate having light-shielding properties and non-flammability is attached to a necessary place around the welding device. Is installed to provide light shielding during work.

  However, for example, when the workpiece to be welded is taken out or replaced, or when adjustment or maintenance of the automatic welding apparatus is performed, it is necessary to move the light shielding device. In addition, the light shielding plate disclosed in Patent Document 1 is provided with a shutter or a hinged door, and these are opened to exchange workpieces.

  However, even when these operations are performed, the shading plate itself may be an obstacle, and the partition may be moved, but it cannot be moved quickly.

  In particular, even in factories where a large number of automatic welding devices are installed, when there are several automatic welding devices in operation due to order production, etc. It is also installed in the device, which requires installation space and is wasteful equipment.

  Therefore, the present invention is easy to move, and when there are a plurality of automatic welding apparatuses, it can be easily adapted to the automatic welding apparatus to be operated, and the work can be replaced without any trouble. An object of the present invention is to provide a shading device for an automatic welding apparatus.

  As a technical means for achieving the above object, a light shielding device for an automatic welding apparatus according to the present invention is installed facing the automatic welding device and includes a light shielding plate for shielding light emitted by an arc. In the apparatus, a frame-like frame according to the dimensions of the automatic welding apparatus, a caster attached to the lower end of the frame, and a take-up roll disposed on the upper part of the frame. A light shielding sheet wound around the winding roll, a light shielding sheet guide rail fixed to the frame for guiding the travel of the light shielding sheet, a reversible rotation of the winding roll, and the light shielding sheet Roll driving means for performing winding and unwinding on the winding roll, and in a state where the light shielding sheet is unwound from the winding roll, the light shielding is provided inside the frame. Over bets it is characterized in that in a state of being expanded.

  The light shielding device is moved in the vicinity of an automatic welding device that needs light shielding. At this time, an operator pushes and moves by a caster. Next, the winding roll is rotated forward by the operation of the roll driving means, and the light shielding sheet is fed out. The light-shielding sheet is guided by the light-shielding sheet guide rail and developed in a light-shielding portion surrounded by a frame, and the light-shielding sheet is arranged facing the automatic welding apparatus to block light during welding work.

  When the roll driving means is operated to rotate the winding roll in the reverse direction, the light shielding sheet is wound around the winding roll and retracts from the light shielding portion. As a result, the portion surrounded by the frame is released, and necessary work such as workpiece replacement can be performed on the automatic welding apparatus.

  According to a second aspect of the present invention, there is provided the light shielding device for an automatic welding apparatus, wherein the roll driving means includes a pair of sprockets attached to an outer side surface of the frame, a roller chain spanned between the pair of sprockets, and the rollers. An air cylinder having a piston rod connected to the chain, and one of the sprockets is fitted to the rotary shaft of the take-up roll, and the moving direction of the roller chain is changed by moving the piston rod back and forth. The light shielding sheet is wound and fed out by changing the rotation direction of the take-up roll.

  As the roll driving means, a pinion fitted to the rotating shaft of the winding roll can be rotated by a reciprocating rack, a geared cable can be used, or other mechanisms can be used. In the present invention, a chain and a chain sprocket are combined, the chain is moved by a reciprocating motion of a piston by an air cylinder, the sprocket is rotated, and the winding roll is reversibly rotated by the rotation of the sprocket.

  According to a third aspect of the present invention, there is provided a light shielding device for an automatic welding device, wherein the air cylinder is a double-acting type.

  A double-acting air cylinder is used. When a single-acting air cylinder is used, a mechanical structure such as a return spring is required, but a double-acting type can be operated only with drive air.

  According to the shading device for an automatic welding apparatus according to the present invention, if the frame is pushed, it can be easily moved, and the shading device for an automatic welding apparatus having excellent portability can be obtained. In addition, since the light shielding sheet is wound and fed out by operating the roll driving means, the light shielding sheet can be quickly put in and out by a simple operation.

  Moreover, since it is excellent in portability, it can install quickly corresponding to the automatic welding apparatus which operate | moves, and can improve the efficiency of the welding operation by an automatic welding apparatus.

  Furthermore, if the light-shielding sheet is wound on a take-up roll and retracted from the light-shielding part, the operator can easily approach the automatic welding apparatus through the central part of the frame, and the workpiece can be replaced or automatically welded. Equipment adjustment and maintenance can be performed quickly.

  Moreover, according to the light-shielding device for automatic welding apparatuses which concerns on invention of Claim 2, a winding roll can be reliably rotated to a normal or reverse direction with the combination of a sprocket and a roller chain. Moreover, since it can be set as the structure which changes the reciprocating linear motion of the piston rod by an air cylinder to the rotational motion of a winding roller with a simple mechanism, cost can be suppressed.

  Further, according to the light shielding device for automatic welding apparatus according to the invention of claim 3, since a double-action type air cylinder is used for the roll driving means, it is possible to reduce energy required for driving compared to electrically driving means. Can reduce CO2 emissions. Further, the weight can be reduced and the occurrence of a failure can be suppressed.

It is a perspective view which shows schematic structure of the light-shielding apparatus for automatic welding apparatuses which concerns on this invention. It is a right view of the flame | frame in the light-shielding apparatus for automatic welding apparatuses shown in FIG. 1, and has shown the principal part and abbreviate | omitted and shown.

  Hereinafter, based on a preferred embodiment shown in the drawings, a light shielding device for an automatic welding device according to the present invention will be specifically described.

  FIG. 1 is a schematic perspective view for explaining the structure of a shading device 1 for an automatic welding device according to the present invention. This light-shielding device 1 for automatic welding apparatuses has a structure in which a light-shielding sheet 3 is provided on a frame-like frame 2 so as to be movable up and down. The light-shielding sheet 3 has light-shielding properties and non-flammability, and a dark-colored opaque portion 3a is connected to the hatched portion at the lower end, and the other portion is a translucent portion 3b. The opposite side can be seen through 3b so that the status of the welding operation can be confirmed.

  The frame 2 is formed in a frame shape in which the upper portions of the two support frames 2a are connected by the beam frame 2b and the lower portions are connected by the reinforcing frame 2c. A leg frame 2d is provided at the lower end of the support frame 2a, and a pair of casters 4 are provided on the lower surface of the leg frame 2d so that the frame 2 can be moved. A light shielding sheet guide rail 5 is provided on each inner side surface of the support frame 2a, and a side end portion of the light shielding sheet 3 is inserted into a slit 5a formed in the central portion of the light shielding sheet guide rail 5. The raising / lowering of the light shielding sheet 3 is guided.

  A wind-up roll 6 is supported at the upper end of the support frame 2a so that both ends of the wind-up roll 6 can be rotated. The light-shielding sheet 3 is wound around the wind-up roll 6. The beam frame 2b has a U shape with an opening at the bottom, and the winding roll 6 is accommodated inside the U shape.

  Support shafts 6a at both ends of the winding roll 6 are supported by a bearing 12a so as to be rotatable, and one end of the support shaft 6a protrudes outward from the bearing 12a. Roll driving means 10 is disposed on the outer surface of the support frame 2b on the side where the end of the support shaft 6a protrudes further outward from the bearing 12a.

  A driven sprocket 11a is fitted to the end of the support shaft 6a protruding from the bearing 12a. Below this driven sprocket 11a, a guide sprocket 11b paired with the driven sprocket 11a is fitted on a support shaft 12c rotatably supported by a bearing 12b. A roller chain 13 is stretched around the pair of sprockets 11a and 11b. The tip of the piston rod 14 is linked to a part of the roller chain 13. In this embodiment, the linkage bracket 15 is attached to the tip of the piston rod 14, and the linkage rod 15a implanted in the linkage bracket 15 is inserted between the rollers of one link of the roller chain 13, and the piston rod 14 and The roller chain 13 is linked. The position of the bearing 12b in the vertical direction can be adjusted by associating with a long hole whose longitudinal direction is the vertical direction in which the support frame 2a is formed. An adjustment plate 16 is fixed to the support frame 2a above the bearing 12b, and an adjustment bolt 16a is screwed to the adjustment plate 16. The tip of the adjustment bolt 16a is brought into contact with the upper surface of the housing of the bearing 12b. That is, by rotating the adjustment bolt 16a with respect to the adjustment plate 16 and moving it forward, the housing is moved with respect to the elongated hole, and the position of the bearing 12b is changed, so that the center of the bearings 12a and 12b is changed. The distance is adjusted.

  The reciprocating linear motion of the piston rod 14 is performed by the operation of the air cylinder 17. This air cylinder 17 is a double-acting type, and operating air is supplied to the forward air supply port 17a and the reverse air supply port 17b via a switching valve 18 such as a 4-port valve. Is done. Compressed air is supplied from the compressor to the switching valve 18 via the pipe 18c, working air is supplied to the forward air supply port 17a via the pipe 18a, and to the backward air supply port 17b via the pipe 18b. Working air is supplied. The switching valve 18 is provided with an exhaust port 18d. In addition, the switching of the supply of operating air by the switching valve 18 is performed by manually operating the switching lever 18e. A piston rod 14 is loosely inserted at the tip of the air cylinder 17 and a buffer spring 19 is disposed.

  The operation of the shading device 1 for automatic welding apparatus according to the present invention configured as described above will be described below.

  This automatic welding device shading device 1 is moved to a desired position facing the automatic welding device that requires light shielding. At this time, when the operator pushes the frame 1, the caster 4 attached to the leg frame 2d of the frame 1 rolls and can be easily moved. After the movement, the compressed air pipe 18c supplied from the compressor is connected to the switching valve 18 as necessary. If it is not necessary to remove the pipe 18c during movement, it is sufficient to move the frame 1.

  Next, the switching lever 18e is operated to connect the compressed air flow path of the switching valve 18 to the backward air supply port 17b. As a result, the compressed air moves the piston rod 14 backward, and the piston rod 14 moves in a direction to be accommodated in the air cylinder 17. At the end of the backward movement, the connecting bracket 15 abuts against the buffer spring 19 to reduce the impact. Since the roller chain 13 is linked to the tip of the piston rod 14, the roller chain 13 is moved in the direction indicated by the arrow R in FIG. 2 by the backward movement of the piston rod 14, and the driven sprocket 11a is moved to the position shown in FIG. And rotate clockwise. Thereby, when the winding roll 6 rotates forward in the same direction, the light-shielding sheet 3 wound around the winding roll 6 is fed out. At this time, the light shielding sheet 3 is guided by the light shielding sheet guide rail 5 and developed in the frame 1. Thereby, it will be in the state by which the light shielding sheet 3 was arranged facing the automatic welding apparatus, and the light emitted at the time of the welding operation by an automatic welding apparatus is interrupted | blocked.

  When exchanging the work to be processed by the automatic welding apparatus, the switching lever 18e is operated, the flow path is changed by the switching valve 18, and the compressed air is communicated with the forward air supply port 17a. As a result, the piston rod 14 moves forward in the direction protruding from the air cylinder 17. As the piston rod 14 moves forward, the driven sprocket 11a rotates counterclockwise in FIG. 2, and the winding roll 6 rotates counterclockwise in the same direction. Since the light shielding sheet 3 developed by the rotation of the take-up roll 6 is taken up by the take-up roll 6 and the inside of the frame 1 is opened, the operator approaches the automatic welding apparatus and replaces the workpiece. It can be performed.

  When the operation by the automatic welding apparatus is completed and the operation by another automatic welding apparatus is performed, the automatic welding apparatus shading device 1 is pushed and moved to the work place of the other automatic welding apparatus. The light shielding sheet 3 may be fed out from the take-up roll 6 in the same manner as described above.

  According to the light-shielding device for an automatic welding device according to the present invention, the light-shielding sheet can be reliably deployed at the welding work place with a simple operation, and the portability is good. Contributes to improving the efficiency of welding operations.

1 Shading device for automatic welding equipment 2 Frame
2a Prop frame
2b Beam frame
2d Leg frame 3 Shading sheet 4 Caster 5 Shading sheet guide rail 6 Winding roll
10 Roller drive means
11a Driven sprocket
11b Guide sprocket
13 Roller chain
14 Piston rod
15 Connecting bracket
15a Connecting rod
17 Air cylinder
17a Forward air supply port
17b Reverse air supply port
18 Switching valve
18a, 18b, 18c piping
18d exhaust port
18e selector lever

Claims (3)

In the light-shielding device for automatic welding equipment that is installed facing the automatic welding equipment and has a light-shielding plate that shields light emitted by the arc,
A frame-like frame according to the dimensions of the automatic welding device, arranged facing the automatic welding device;
A caster attached to the lower end of the frame;
A winding roll disposed on the upper part of the frame;
A light shielding sheet wound around the winding roll;
A light shielding sheet guide rail fixed to the frame for guiding the traveling of the light shielding sheet;
Roll driving means for rotating the winding roll reversibly and winding and feeding the light-shielding sheet to and from the winding roll;
The light shielding device for an automatic welding apparatus, wherein the light shielding sheet is unfolded inside the frame in a state where the light shielding sheet is fed from the winding roll. The roll driving means includes
A pair of sprockets attached to the outer side of the frame;
A roller chain spanned between the pair of sprockets;
An air cylinder with a piston rod connected to the roller chain,
One of the sprockets is fitted to the rotating shaft of the winding roll, the moving direction of the roller chain is changed by the advancement and retraction of the piston rod, and the rotating direction of the winding roll is changed, thereby winding the light shielding sheet. The shading device for an automatic welding apparatus according to claim 1, wherein taking-out and feeding are performed. The light shielding device for an automatic welding apparatus according to claim 2, wherein a double-acting type is used for the air cylinder.

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