JPH0661387U - Positioner device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a positioner device, and in particular, when holding a steel frame joint, which is a joint between a column and a beam in a building department, in a factory, the joint is held and welded. The present invention relates to a positioner device for facilitating work. In a positioner device having an L-shaped base part to which a gripping device for rotatably gripping a workpiece such as welding is attached, a swingable movable part attached to the L-shaped base part is provided. , A supporting device fixed to the base part and supporting the movable part. Further, the positioner device is attached to the L-shaped base portion, and when an abnormal load is applied to the gripping device, the position sensor 1 detects that the movable portion has swung by a predetermined amount or more.
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Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a positioner device, and more particularly, to a positioner device for holding a joint part in a factory for automatically welding a steel frame joint part, which is a joint between a column and a beam in a building part, to facilitate welding work. It is about.

[0002]

[Prior art]

 Conventionally, the joint between the pillar and the beam of a building uses a steel frame joint in which H-shaped steel, which is a connecting portion with the beam, is welded to the side surface of a column composed of a square pipe joined to the pillar. Such steel joints are often welded at the factory in advance. In this case, H-steel is temporarily welded to the column, first one main welding is performed, and then the crane is lifted to reverse the steel joint. , Main welding of the other side is performed. Since such a crane hoisting system involves danger when reversing the connection, a positioner disclosed in Japanese Patent Laid-Open No. 63-137597 has been proposed. This positioner is equipped with fixing jigs at both ends of the H-shaped steel, especially the web portion, along one axis of the cross-shaped steel joint, chucks the jigs, holds them rotatably, and rotates them by a motor. I am making it. Further, Japanese Utility Model Laid-Open No. 62-10987 proposes that the H-shaped steel in the steel-framed joint, particularly the flange portion, is clamped and held, and is vertically swung and rotated.

[0003]

[Problems to be solved by the device]

 However, in the above configuration, when the steel frame joint is lifted by the crane and mounted on the positioner, or when the other side of the main welding is performed by reversing the crane operation and the crane is lifted further, There is a problem that the positioner is damaged. Also, when attempting to make the positioner hold the crane, if the position hung by the crane is higher than the normal position for gripping, the crane will be pulled down or the positioner will be pulled up, There is a problem that the machine is damaged or the positioner is damaged. Further, when the positioner grips a steel-frame joint portion having a weight more than the specified value, there are problems such as abnormal rotation of the positioner or insufficient gripping force.

The present invention focuses on the above-mentioned conventional problems, and relates to a positioner device, and particularly when a steel frame joint, which is a joint between a column and a beam in a building section, is automatically welded in a factory, the joint section is The purpose is to improve the positioner device to hold and secure the welding work.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the first invention of the present invention, an L-shaped base part having an L-shaped base part to which a gripping device for rotatably gripping a workpiece such as welding is attached is provided. It comprises a swingable movable part attached to the mold base part, and a support device fixed to the base part and supporting the movable part.

In the second invention, which is mainly based on the first invention, when the movable part is attached to the L-shaped base part and an abnormal load is applied to the holding device, the movable part is oscillated by a predetermined amount or more. It has a position sensor for detection.

[0007]

[Action]

 According to the above configuration, when the amount of movement of the movable part exceeds a predetermined amount by a signal from the sensor, an alarm is issued, and the like, so that the worker can be notified in advance of the danger that the crane, the positioner, or the like will cause. As a result, when a work piece such as a steel frame part with a weight more than the specified weight is gripped, or when a crane or the like carrying the work material in the gripped state is accidentally lifted, the crane It is possible to avoid the danger that may occur in the machine and positioner. Further, when the position where the crane is hung is higher than the normal position when trying to grip the crane, and the crane is pulled downward during the process of gripping with the positioner, it is possible to avoid the risk of occurring in the crane, the positioner, or the like.

[0008]

【Example】

 Embodiments of a positioner device according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of an embodiment of the positioner device of the present invention, and FIG. 2 is a plan view of an embodiment of the positioner device. In FIG. 1, a positioner device 1 includes a base portion 3 fixed at an installation position such as an L-shaped floor, and one end of an L-shaped vertical portion of the base portion 3 swingably held by a shaft 3a. A movable part 5, a gripping device 9 arranged on the movable part 5 for gripping a workpiece 7 such as a steel frame joint part, and a supporting device 11 fixed to the base part 3 for supporting the movable part 5. A position sensor 13 fixed to the base portion 3 for detecting the movement of the movable portion 5 and a warning device 15 for issuing a warning that the movable portion 5 has moved by a signal from the position sensor 13 are provided.

The movable portion 5 has a U-shape, and is coupled to the shaft 3a fixed to the base portion 3 via a bearing (not shown) or the like. A gripping device 9 is attached to the U-shaped flat surface of the movable portion 5. The gripping device 9 includes a fixed claw 9a, a movable claw 9c coupled to the fixed claw 9a via a shaft 9b, and a motor 9d (not shown) that rotates the movable claw 9c. The workpiece 7 such as a steel frame joint portion is gripped with 9c. However, the gripping device is not limited to the above embodiment, and the movable claw 9c operates in parallel with the fixed claw 9a, or both movable claws 9c operate in parallel with each other or rotate. Needless to say, etc. are used.

As shown in FIG. 3, the support device 11 includes a case 11 a fixed to the base portion 3, a case slidably held by the case, one end of which abuts on the case 11 a, and the other end of which is the movable portion 5. And a spring 11c that is housed in the case 11a and has one end contacting the case 11a and the other end contacting the pin 11b. Further, the pin 11b has an adjusting screw 21 and is configured to adjust the position (X direction) at which the movable portion 5 is supported. The position sensor 13 is composed of a position sensor 13a in the Xa direction and a position sensor 13b in the Xb direction, which detects the relative position between the base portion 3 and the movable portion 5.

Next, the operation of the above structure will be described. A workpiece 7 such as a steel joint is hung by a crane device 25 and conveyed to the vicinity of the positioner device 1. Next, the workpiece 7 is moved in the vertical direction while adjusting the workpiece 7 with the crane device 25 so that the workpiece 7 is located at the proper position of the gripping device 9 of the positioner device 1. When the position is almost normal, the movable claw 9c of the gripping device 9 is rotated to grip the workpiece 7. At this time, when the workpiece 7 having a weight more than the specified weight is gripped, the movable part 5 to which the gripping device 9 is attached is moved around the shaft 3 against the spring 11c of the supporting device 11. 5 swings in the Xb direction. When the movable part 5 swings in the Xb direction by a predetermined amount, the position sensor 13b in the Xb direction operates and sounds the alarm device 15 to warn the operator that the workpiece 7 having a weight more than the specified weight is gripped. As a result, it is possible to avoid the danger of the positioner and the like.

Further, when the position hung by the crane is higher than the normal position when the crane is tried to be gripped and the crane is pulled downward in the process of being gripped by the positioner, the gripping device 9 is attached. The movable portion 5 swings around the shaft 3 in the Xa direction away from the state in which the movable portion 5 is in contact with the pin 11b of the supporting device 11. When the movable part 5 swings in the Xa direction by a predetermined amount, the position sensor 13a in the Xa direction operates and sounds the alarm device 15 to warn the operator that the crane will be pulled downward. As a result, the danger of the positioner etc. can be avoided.

Although the two sensors detect the Xa direction and the Xb direction in the above embodiment, the single sensor may detect the Xa direction and the Xb direction without being limited to the above embodiment. Also, the sensor may be a limit switch, a proximity switch, a photoelectric tube, or the like. Further, in this embodiment, the spring is used for the supporting saw, but a cylinder or the like may be used. Furthermore, it is also possible to replace the force sensor by combining the support device and the sensor.

[0014]

[Effect of device]

 As described above, in the positioner device according to the present invention, when a signal from the position sensor causes the moving amount of the movable part to reach a predetermined amount, an alarm is sounded to know in advance the danger that may occur in the crane or the positioner device. Therefore, the worker can work safely and can prevent the crane or the positioner device from being damaged. In addition, the damage caused by operator error can be minimized, and even an inexperienced operator such as a beginner can easily perform the operation, and the burden on the driver is significantly reduced.

[Brief description of drawings]

FIG. 1 is a side view of a positioner device according to the present invention.

FIG. 2 is a plan view of a positioner device according to the present invention.

FIG. 3 is a sectional view of a supporting device of the present invention.

[Explanation of symbols]

1 positioner device, 3 base part, 5 movable part,
7 workpiece, 9 gripping device, 11 supporting device,
13 Position sensor,

Claims (2)

[Scope of utility model registration request] 1. A positioner device having an L-shaped base part to which a gripping device for rotatably gripping a workpiece such as welding is mounted, wherein the positioner device is swingably movable mounted to the L-shaped base part A positioner device comprising: a base portion and a support device fixed to the base portion and supporting the movable portion. 2. The positioner according to claim 1, further comprising a position sensor 13 attached to the L-shaped base portion and detecting that the movable portion swings by a predetermined amount or more when an abnormal load is applied to the gripping device. apparatus.