JPS63160822A - Electric fusing-equipment - Google Patents

Abstract

PURPOSE:To enable reliable fusion even if joint parts of different sizes and kinds are used, by a method wherein a code showing a control variable which is to be supplied to a heater is fitted to a joint member beforehand, and the code is read at the time of welding. CONSTITUTION:In the case where pipe members 1, 1 and a joint member 2 are joined with one another, a heater 3 is provided on a surface side of the joint member coming into contact with the pipe member. A code, for example, a bar code 20 is fitted to the joint member 2 and shows a control variable to be supplied to the heater 3. A bar code wand 15 reads contents of the code at the time of performance of fusing operation. A control electric power source part 4 varies the control variable to be supplied to the heater according to the contents of the bar code, The contents of the code are composed of a manufactory, a kind of a joint, a size of the joint, the quality of the material of the joint, standard application voltage and a standard electrification period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electric welding device for joining a pipe member and a joint member by welding.

(Prior art) Conventionally, when joining a pipe member made of a thermoplastic material such as polyethylene and a joint member, a heating coil is attached to the surface of the joint member that comes into contact with the pipe member, and a current is applied to the heating coil. There has been provided an electric welding device that welds a joint member and a pipe member by increasing the temperature of the joint member to a predetermined temperature by flowing water (for example, Japanese Patent Application Laid-Open No. 1983-1999)
131025).

By the way, when welding such a joint member and pipe member, the welding condition differs depending on the size, type, and material of the joint member, so it is necessary to change the welding conditions in order to obtain the desired welding strength. However, the conventional electric welding apparatus described above is configured to determine information indicating the energization time using a resistor built into the joint member in advance, and send this determined information to a controller that controls welding conditions.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional method of setting the energization time using a resistor, a resistor must be incorporated into each joint member when creating each joint member, which is time-consuming and time-consuming. There is a problem in that the only information available is the energization time.

(Means for Solving the Problems) When joining a pipe member and a joint member, the electric welding device according to the present invention includes a heating element provided on the surface side of the joint member that contacts the pipe member, and a heating element provided on the surface side of the joint member that contacts the pipe member; A code attached to a member that indicates a controlled amount to be supplied to the heating element, a reading means for reading the contents of the code, and a control for changing the controlled amount to be supplied to the heating element in accordance with the contents of the code. It is equipped with a power source. For example, a barcode is used as the code. The contents of the code include manufacturing location, type of joint, joint size, joint material, standard applied voltage, standard energization time, etc.

(Function) Since the parameters required to obtain a predetermined welding state differ depending on the type, size, material, etc. of the pipe member and joint member, these attributes are represented by a code, and this code is read when welding work is performed. The control power source determines the applied voltage and energization time to be supplied to the heating element according to the contents of this code.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an electric welding apparatus according to the present invention, and FIG. 2 is an external view of the apparatus.

This electric welding device connects each end of two pipe members 1.1 made of thermoplastic resin such as polyethylene to approximately the center from the openings at both ends of a joint member (socket) 2 also made of thermoplastic resin such as polyethylene. This shows an example in which the pipe member 1.1 and the joint member 2 are inserted into each other, and the pipe member 1.1 and the joint member 2 are welded and joined by the heat generating action of a coil-shaped heater 3 provided on the inner peripheral surface of the joint member 2. , an AC voltage supplied from an external power source such as an AC generator (not shown) is converted into a predetermined voltage via the voltage control unit 5 of the control power supply unit 4, and is connected to the heater 3 via the connection terminals 7a and 7b. is supplied to. These connection terminals 7a and 7b are connected to both ends 3a of the heater 3 mounted in the joint member 2,
3b, and are to be connected to voltage application terminals 8a and 8b, respectively, which are formed in a protruding manner on the outer peripheral surface of the joint member 2.

Further, on the outer peripheral surface of the joint member 2, the voltage application terminal 7a is provided.
Alternatively, a barcode 20 is attached near 7b, and this barcode 20 includes the manufacturer code, the type of coupling member (type of socket, cheese, etc.), the size of the coupling member, Information such as the material of the joint member, standard applied voltage, and standard energization time is recorded. The information represented by this barcode 20 is read by a barcode wand (barcode league device) 15 connected to the control power supply section 4. In this example, the information represented in the barcode 20 can also be manually input by pressing a key on an operation switch (not shown).

As shown in FIGS. 4 and 5, this barcode wand 15 is equipped with a barcode reading sensor 21 and a temperature sensor 22 at its tip 15a. is a light emitting element 21a such as a light emitting diode (LED) and a light receiving element 21 such as a phototransistor.
b. Further, the barcode wand 15 is provided with a start switch 23 for starting the operation of the control power supply unit 4. This barcode wand 1
5 is a barcode wand storage section 24 attached to the tip of the cable to prevent damage when the control power supply section 4 is not in use and after the control power supply section 4 starts operating.
(See Figure 3).

The voltage control section 5 includes a fusion sequence monitoring section l.
It is equipped with a voltage control element such as a triac that controls the voltage applied to the heater 3 and the energization time based on the control signal from the heater 3. The fusion sequence monitoring section 10 is constituted by a microprocessor, and sends an operation command to the voltage control section 5, and also receives information on the power supplied via the voltage control section 5. In addition to this supply power information information, the fusion sequence monitoring unit 10 also has the following information:
Various types of information are taken in from a barcode discrimination section 11, an outside temperature determination section 12, and a start/stop instruction section 13. That is, barcode discrimination section 1
1 is a barcode 20 by the barcode wand 15.
The information read from the bar code (manufacturer code, type of joint member, size of joint member, standard applied voltage, standard energization time, etc.) is determined and input to the fusion sequence monitoring unit 10, and the outside temperature determination unit 12 reads the bar code. The outside temperature detected by the temperature sensor 22 provided on the wand 15 is determined and inputted to the fusion sequence monitoring unit 10 as outside temperature correction information, and from this outside temperature correction information, the standard applied voltage, and the standard energization time. The applied voltage and energization time to be supplied are determined and commanded to the voltage control unit 5. The start/stop instruction section 13 gives an instruction to start the operation to the fusion sequence monitoring section 10 by operating a start switch 23 provided on the barcode wand 15. Note that the start/stop instruction section 13 is provided on the display panel 4a of the control power supply section 4, in addition to the start switch 23 provided on the barcode wand 15.
0N10FF control is also possible using a start switch 25 and a stop switch 26 (see FIG. 2) provided at the front. In addition, these voltage control section 5, barcode discrimination section ll, and outside temperature determination section 12
Each piece of information input to the fusion sequence monitoring unit 10 from
The information is appropriately displayed on the display section 16 made of a cathode ray tube or the like, and is also printed and recorded by the printer 17. By printing with the printer 17, many fusion conditions can be recorded in one-to-one correspondence with the joint member 2. An example of printing by this printer 17 is shown in FIG.

Next, a procedure for performing a welding operation for connecting two pipe members with a socket using the above-mentioned electric welding apparatus will be explained.

The joint member 2 is externally fitted onto each end of the two pipe members 1, 1, and the connection terminals 7a, 7b are mounted on the voltage application terminals 8a, 8b of the joint member 3. Thereafter, the barcode 20 attached to the outer peripheral surface of the joint member 2 is read by the barcode wand 15.

At this time, although not shown in the drawings, when the control power supply section 4 reads accurate information, it notifies the operator of the confirmation signal through vocalization or the like. The operator confirms this and turns ON the start switch 23 of the barcode wand 15 or the start switch 25 of the display panel 4.

energization to the heater 3 is started. The control power supply section 4 controls the voltage control section 5 according to the contents of the code read from the barcode 20. Thereby, even when using joint members 2 of different sizes and types, it is possible to reliably weld the pipe members 1, 1 and the joint member 2.

In addition, in the above embodiment, a socket is shown as an example of the joint member 2, but this joint member may include a reducer, a
It can be similarly applied to items such as cheeses, caps, and elbows that are fitted over the ends of pipe members, and items that are pressed against and fused to the outer peripheral surface of pipe members such as saddles, tapping saddles, and service teeth.

(Effects of the Invention) As described above, according to the present invention, the control power source can be controlled according to the contents of the read code, so even when joint members of different sizes and types are used, welding can be performed reliably. I can do it. Further, there is no need to process the joint member as in the past, and moreover, a large amount of information can be transmitted.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the electric welding device according to the present invention, Fig. 2 is an external view of the same device, Fig. 3 is a schematic diagram showing the arrangement of the barcode and barcode league device, and Fig. 4 The figure is an enlarged perspective view of the barcode league device, FIG. 5 is a perspective view showing the tip of the barcode league device along with its internal structure, FIG. FIG. 7 is a diagram showing an example of printing of information read from a barcode and power supply information. 1...Pipe member 2...Joint member 3...
- Heater 4... Control power supply section 15...
Barcode Wand 20...Barcode patent applicant
Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru Figure 7 Kan 2 Figure 3 ws 4 Figure 5a Figure 5

Claims (1)

[Scope of Claims] 1) When joining a pipe member and a joint member, a heating element provided on the surface side of the joint member that comes into contact with the pipe member; An electric welding device comprising: a code indicating a controlled amount to be supplied; a reading means for reading the contents of the code; and a control power source that changes the controlled amount supplied to the heating element according to the contents of the code. Device.