JP2003080395A - Controller for temperature between paths - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller for temperature between paths which is com pact and light-weight, is easily handleable, moreover, is easily operated, efficient ly performs a measuring operation, reliably performs temperature control in accordance with the object to be welded and contributes the reduction of man- hour and the improvement of productivity, in its turn. SOLUTION: This controller for temperature between paths is provided with a device main body 1 which has a size capable of holding with one hand, is incorporated with a circuit part 2 for temperature control and can be mounted on a position separated from a welded part of the object to be welded and a temperature sensor 4 which is connected with the device main body 1, is arranged on the welded part or on the neighboring position thereof and detects the temperature between paths of the welded part. The circuit part 2 for temperature control is provided with a setter 15 which sets the temperature between paths to be controlled, a judging means which fetches a detection signal from the temperature sensor 4, determines whether the welded part has a temperature between paths of the set temperature or more and an alarming means 17 which outputs an alarm when it is determined that the temperature between paths of the welded part is the set temperature or more by the decision means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-pass temperature control device applied to control welding heat input and inter-pass temperature when welding construction steel or the like. A temperature control device between paths.

[0002]

2. Description of the Related Art In a welded product such as a steel frame for construction, it is necessary to have sufficient heat input for welding in order to secure the strength and toughness of the welded portion. Need to manage. Therefore, in the past, a predetermined standard has been set for the management of the temperature between passes, and the reliability of the welded material is ensured by complying with it.

By the way, it is difficult to adopt equipment that is troublesome to handle at a welding site where a welding target is large, such as a building steel frame, and a lot of work is performed at a high place. On the other hand, conventionally, there is no accurate inter-pass temperature control device that can be easily handled locally.

For this reason, a marker generally called a temperature choke has been widely used. This temperature choke is a marker of a material that melts at a specific temperature, and there are a plurality of types for each temperature according to the melting temperature. Then, the welding operator puts a mark on the welded portion for each pass during welding, and visually judges whether the temperature is below the control temperature due to melting or non-melting of the mark.

[0005]

However, at a welding site that employs the above-described temperature control method between passes, the work of marking each mark with a temperature choke is complicated, which requires measurement time and increases man-hours. As a result, there were problems such as reduction in productivity.

The present invention has been made in view of the above circumstances, is compact and lightweight, is easy to handle, is easy to operate, can perform measurement work efficiently, and ensures temperature control according to the object to be welded. It is an object of the present invention to provide an inter-pass temperature control device which can be performed and which can contribute to a reduction in the number of work steps and an improvement in productivity.

[0007]

In order to achieve the above object, the invention according to claim 1 has a size capable of being grasped by one hand, and has a built-in temperature control circuit section, which is used for welding a welding object to be welded. A device body that can be installed in a separated position,
A temperature sensor connected to the main body of the apparatus and arranged at or near the weld to detect the interpass temperature of the weld, and the temperature management circuit unit sets the interpass temperature to be managed. A setter, a determination unit that takes in a detection signal from the temperature sensor and determines whether or not the welded portion has a temperature between passes that is equal to or higher than the temperature set by the setter, and the determination unit determines the path of the welded portion. There is provided an inter-pass temperature management device, comprising: an alarm unit which outputs an alarm when it is determined that the inter-temperature is equal to or higher than a set value.

According to a second aspect of the present invention, there is provided the inter-pass temperature control apparatus according to the first aspect, which has a supporting means capable of supporting the whole or a part of the apparatus main body in a non-contact state with the welding object. .

According to a third aspect of the present invention, there is provided the inter-pass temperature control device according to the second aspect, wherein the supporting means has at least one of a magnet type adsorption section and a vibration absorption section.

According to a fourth aspect of the present invention, there is provided the inter-pass temperature control apparatus according to any one of the first to third aspects, wherein the apparatus main body includes a drive power source for the temperature control circuit section and a power switch. To do.

According to a fifth aspect of the present invention, the temperature sensor is integrally connected to the main body of the apparatus via a rod-shaped connecting member which has a fixed length or can be expanded or contracted, or is connected by a flexible signal cable. An inter-pass temperature control device according to any one of items 1 to 4 is provided.

According to a sixth aspect of the present invention, the temperature management circuit section includes a display section for displaying the inter-pass temperature set by the setting device. Provide a management device.

According to a seventh aspect of the invention, there is provided the inter-pass temperature control device according to any one of the first to sixth aspects, wherein the alarm means is an alarm lamp.

According to an eighth aspect of the present invention, the temperature management circuit section has a storage section for storing the detected inter-pass temperature data, or a data output section for outputting the stored data in addition to the storage section. An inter-pass temperature control device according to any one of 1 to 7.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an inter-pass temperature control device according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an overall configuration of an inter-pass temperature control device according to this embodiment, and FIG. 2 is a diagram showing a system configuration of a temperature control circuit section. FIG. 3 is an explanatory diagram showing a usage state.

As shown in FIG. 1, the interpass temperature control system A of the present embodiment is provided with a device body 1 in the form of a flat rectangular parallelepiped having a size that can be held by an operator with one hand, for example. The apparatus main body 1 is a housing 1a made of a heat resistant metal plate.
In addition, a temperature management circuit section 2 described later is provided.

On one side surface of the main body 1 of the apparatus, one hollow rod-shaped connecting tool 3 is provided, and the connecting tool 3 is of a fixed length or is capable of expanding and contracting. At the tip of the connector 3,
A temperature sensor 4 for detecting the temperature between passes is attached. The temperature sensor 4 is, for example, a contact type sensor having a thermoelectric thermometer at the bottom, and detects the temperature by contacting the welded portion of the welding object or its vicinity. The temperature sensor 4 can sufficiently withstand a high heat of more than 1000 ° C. which is a welding temperature, and can detect a temperature of up to 500 ° C., for example. The temperature detection signal detected by the temperature sensor 4 is connected to the temperature management circuit section 2 in the apparatus main body 1 by a signal cable (not shown) inserted in the connector 3. The temperature sensor 4 is not limited to the contact type, but a non-contact type sensor using an infrared sensor or the like can be applied. In addition, the temperature sensor 4
Although not shown, the temperature sensor 4 may be independently movable by connecting to the apparatus body 1 by a flexible signal cable.

Further, the apparatus main body 1 has a plurality of supporting means which can be detachably attached and fixed to the object to be welded in a non-contact state, for example, supporting legs 5a by three-point support,
It has 5b and 5c. First and second support legs 5a, 5
b is left and right 1 on the side of the apparatus body 1 on which the temperature sensor 4 is provided.
The third support leg 5c is arranged in a pair, and the third support leg 5c
The body is arranged. The first and second support legs 5a and 5b are
In addition to having a magnet type adsorption part that can be detachably fixed to the welding object, and a vibration absorbing part that can absorb the vibration of the welding object, it can be installed stably even on the irregular surface of the welding object. It was done. That is, in the first and second supporting means 5a, 5b, the support shaft 7 is attached to the tip of the bracket 6 protruding in parallel from the upper surface of the housing 1a and the shaft support portion 8 is provided.
The magnet attracting portion 9 made of a metal columnar body having a magnet therein is connected to the lower end of the support shaft 7. The lower end position of the magnet attraction portion 9 is located below the lower end surface of the housing 1a of the apparatus main body 1.
The support shaft 7 is supported by a shaft support portion 8 so as to be vertically movable, and the lower end side of the support shaft 7 can swing around the axis center with the upper end as a fulcrum.

A compression coil spring 10 which expands and contracts in the vertical direction is arranged around the support shaft 7. The upper end of the compression coil spring 10 abuts the bracket 6, and the lower end of the compression coil spring 10 is attracted by a magnet. The magnet 9 is in contact with the upper surface of the portion 9 so that the magnet attraction portion 9 is always urged downward. As a result, the bottom surface of the magnet attraction portion 9 can be attracted and fixed to the surface of the object to be welded by magnetic force, and in this state, the bottom surface of the apparatus body 1 can be held in a position separated from the surface of the object to be welded, and the spindle By the vertical movement of 7 and the elasticity of the compression coil spring 10, a vibration absorbing portion 11 for absorbing the vibration of the welding target with respect to the apparatus main body 1 is configured. Further, even if the surface of the object to be welded has an irregular shape, such as a step or unevenness, the angle of the support shaft 7 supported by the bracket 6 can be freely changed.
Can be stably installed even on an irregular surface of the object to be welded.

The third support leg 5c is a horizontal piece 12 projecting from the other side surface of the housing 1a, and a screw leg 14 having a butterfly-shaped rotation operating portion 13 is screwed downward and rotated by a manual operation. By rotating the operation portion 13, the screw leg 14 can be projected and retracted downward, and the device body 1 can be held at an appropriate height. As a result, the apparatus main body 1 can be removably fixedly installed in the vicinity of a welded portion such as a pillar or a beam of the object to be welded in a vertical, horizontal, or other arbitrary arrangement in a state where thermal influence is minimized.

Next, the temperature control circuit section 2 provided in the apparatus main body 1 will be described with reference to FIGS.
FIG. 2 is a system configuration diagram showing the temperature management circuit unit 2.

The temperature control device 2 includes an alarm setting device 15 as a setting device for setting the inter-pass temperature to be controlled and a detection signal from the temperature sensor 4, and the welding portion is alarm setting device 1.
5, a judgment means 16 for judging whether or not the temperature between passes is equal to or higher than the set temperature, and an alarm is output when the judgment means 16 judges that the temperature between passes of the welded portion is equal to or higher than a set value. It has an alarm lamp 17 as an alarm means.

It should be noted that the apparatus body 1 includes a temperature control circuit section 2
Drive power source (not shown) and a power switch 18, and a digital temperature indicator 19 as a display unit for displaying the inter-pass temperature set by the alarm setter 15.
have. The judgment means 16 is a CP as a calculation means.
U20, a memory 21 for storing temperature information, an AD converter 22, and the like. The memory 21 and an output device (not shown) may have a storage unit for storing the detected inter-pass temperature data, or a data output unit for outputting the stored data on a screen or a paper surface.

On the surface of the main body 1 of the apparatus, a rotation operation portion 15a for rotating an alarm set temperature to be managed by the alarm setting device 15 and a red alarm lamp 17, for example, are provided.
Operation unit 18a for turning on and off the power switch 18
And a temperature indicator 19 for displaying the alarm-set temperature (for example, 350 ° C.).

Next, the operation will be described with reference to FIG. Figure 3
FIG. 6 is an explanatory diagram showing a usage example of the inter-pass temperature management device A according to the present embodiment. In the example of FIG. 3, the interpass temperature control device A is horizontally installed in the vicinity of the welded portion 24 of the welding object 23, and the temperature sensor 4 is arranged at a desired portion of the welded portion 24. . However, this FIG. 3 can also be used in any arrangement such as a vertical state rotated by 90 degrees or an inclined state.

When controlling the temperature between passes during welding,
For example, the apparatus main body 1 is gripped with one hand, the rotation operation unit 18 of the alarm setting device 15 is operated to set the control temperature, and the temperature display 19 confirms the set temperature. Then, the apparatus main body 1 is mounted on the welding target 23 for each predetermined welding pass, and the temperature of the welded portion 24 is detected by the temperature sensor 4. If the welding temperature is equal to or higher than the monitoring temperature of 350 ° C., for example, the alarm lamp 17 continues to be lit, and in that case, the welding operation is on standby. When the temperature of the welded portion 24 falls below the set temperature, the alarm lamp 17 is turned off, so it can be immediately determined that welding is possible even from the separated position. Therefore, when the inter-pass temperature monitoring device A of the present embodiment is used, unlike the conventional work using the temperature choke, no complicated work such as marking or checking in the vicinity is required at all. ,
By simply installing the device near the welded part, the temperature between passes can be confirmed easily, quickly, and surely. Therefore, the work is remarkably simplified, which can reduce the measuring time and the number of steps, and can greatly contribute to the improvement of productivity. Also, one inter-pass temperature monitoring device A
Can be continuously used, and a significant cost reduction can be expected as compared with the conventional technology which consumes a large number of expensive temperature chokes.

Further, in the present embodiment, the apparatus main body 1
By increasing the portability so that it can be gripped with one hand, handling is extremely easy, and workability can be improved in many ways from this point. Further, in the present embodiment, the device body 1
Since the support legs 5a, 5b, 5c are used to mount the whole or part of the apparatus main body 1 on the welding target 23 in a non-contact state, it is possible to effectively maintain the heat resistance of the components.
Moreover, by applying the magnet type attraction portion 9 to the support legs 5a and 5b, the attachment / detachment work can be facilitated, and the attachment state can be stabilized and ensured. In addition, the support legs 5a, 5
By providing the vibration absorbing portion 11 in b, it is possible to prevent the adverse effect of the vibration on the apparatus body 1. Furthermore, the supporting leg 5c
With the configuration including the screw leg 14, the installation height of the apparatus body 1 with respect to the welding target 23 can be easily adjusted.

Further, since the apparatus main body 1 is configured to include the drive power source for the temperature control circuit section 2 and the power source switch, there is no need to provide a power cord or the like, and in this respect, the configuration is simple and easy to handle. It is possible to secure sex. Since the temperature sensor 4 is integrally connected to the apparatus main body 1 via the rod-shaped connector 3 having a fixed length or expandable and contractible,
The position of the temperature sensor 4 can be easily set by operating the apparatus body 1. Although not shown, when the temperature sensor 4 is connected by a flexible signal cable, the temperature sensor 4 is fixed in the state where the apparatus body 1 is fixed.
The convenience that only the position can be adjusted is obtained.

Further, in the present embodiment, the apparatus main body 1
Since the temperature indicator 19 of the temperature management circuit unit 2 is provided in and the temperature between paths set by the alarm setter 15 is displayed,
It is possible to effectively prevent operational mistakes, eliminate erroneous recognition of the monitoring temperature setting, etc., and improve the reliability and safety of the monitoring operation.

When a storage unit for storing the detected inter-pass temperature data or a data output unit for outputting the stored data is additionally provided, the management data is recorded so that the subsequent management can be performed. The state can be grasped easily and surely.

[0031]

As described above in detail, according to the inter-pass temperature control device of the present invention, it is compact and lightweight, easy to handle, easy to operate, can perform the measurement work efficiently, and can adapt to the object to be welded. The temperature control can be surely performed, and the work man-hour can be reduced, which can contribute to the improvement of productivity.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an inter-pass temperature control device according to the present invention.

FIG. 2 is a functional explanatory diagram of the inter-pass temperature management device according to the embodiment.

FIG. 3 is an explanatory diagram showing a usage state of the inter-pass temperature management device according to the embodiment.

[Explanation of symbols]

1 device body 1a housing 2 Temperature control circuit 3 connector 4 Temperature sensor 5a, 5b, 5c Support legs (support means) 6 bracket 7 spindle 8 shaft support 9 Magnet adsorption part 10 Compression coil spring 11 Vibration absorber 12 horizontal pieces 13 Rotation operation part 14 screw leg 15 Alarm setting device 15a Rotating operation part 16 Judgment means 17 alarm lamp 18 power switch 18a operation part 19 Temperature indicator 20 CPU 21 memory 22 AD converter 23 Welding object 24 Weld A pass temperature control device

Continued front page    (72) Inventor Masao Yamaguchi             404-1 Matsuhidai, Matsudo City, Chiba Komai Iron Works Co., Ltd.             Ceremony company technical center F-term (reference) 2F056 WA00 WA01 WA06

Claims (8)

[Claims] 1. A device main body having a size capable of being gripped by one hand and having a built-in temperature control circuit part, and which can be mounted at a position separated from a welding part of an object to be welded, and the welding part connected to the device main body or the welding part. A temperature sensor disposed at a position near the temperature sensor for detecting the inter-pass temperature of the welded portion, wherein the temperature management circuit unit sets a inter-pass temperature to be managed, and a detection from the temperature sensor. Determining means for determining whether or not the welded portion has a temperature between passes which is equal to or higher than the temperature set by the setting device, and the determination means determines that the interpass temperature of the welded portion is equal to or higher than a set value. An inter-pass temperature control device, comprising: an alarm unit that outputs an alarm when the temperature is exceeded. 2. The inter-pass temperature control device according to claim 1, further comprising a support means capable of supporting the whole or a part of the device main body in a non-contact state with the welding object. 3. The inter-pass temperature control device according to claim 2, wherein the supporting means has at least one of a magnet type adsorption section and a vibration absorption section. 4. The apparatus main body is provided with a drive power source and a power switch for the temperature control circuit section.
The inter-pass temperature control device as described in any one of the above. 5. The temperature sensor according to claim 1, wherein the temperature sensor is integrally connected to the main body of the apparatus via a rod-shaped connecting member having a fixed length or expandable / contractible, or connected by a flexible signal cable. The inter-pass temperature management device according to any one of the above. 6. The inter-pass temperature control device according to claim 1, wherein the temperature control circuit unit has a display unit for displaying the inter-pass temperature set by the setting unit. 7. The interpass temperature control device according to claim 1, wherein the alarm means is an alarm lamp. 8. The temperature management circuit section includes a storage section for storing the detected inter-pass temperature data, or a data output section for outputting the stored data in addition to the storage section. The inter-pass temperature control device described in.