JPH064285B2 - High frequency welder processing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a high-frequency welder processing method, and more particularly to a high-frequency welder processing method suitable for processing mass-produced products such as automobile door trims.

<< Prior Art >> Usually, a high-frequency welder processing method is known as a method for joining resin sheets.

The high-frequency welder processing method is suitable for mass-produced products such as automobile door trims. FIG. 3 shows a conventional rotary device used for high-frequency welder machining, in which four welder dies 2 are installed at equal intervals on a rotary table 1 which rotates intermittently in the direction of the arrow. Therefore, the rotary table 1 intermittently rotates by 90 °. First, as a work procedure, the set station 3
Then, the worker sets a workpiece W such as a resin sheet on the welder mold 2. Then, when the setting of the workpiece W is completed, the rotary table is rotated by 90 °, the welder mold 2 with the workpiece W set on the energization station 4 is positioned on the lower electrode 5, and the upper portion (not shown) is placed. The electrode descends, high-frequency current is applied, and the material is pressed at a predetermined pressure and cooled for a predetermined time.

After the energization and cooling are completed, the rotary table 1 is further rotated by 90 °, and the releasing station 6 performs the releasing operation for releasing the product subjected to the high frequency welder descending from the welder mold 2.

As described above, in the conventional rotary high-frequency welder machining method, the workpiece W is set on the welder dies 2 installed at equal intervals on the rotary table 1 that rotates intermittently, and the adjacent stations 4 are energized. The cooling process is performed, and when the high frequency welder process is completed, the high frequency welder process is performed by moving to the mold release station 5 and taking out the workpiece W.

<Problems to be Solved by the Invention> However, in the conventional rotary high-frequency welder processing method, since high-frequency electric current processing and cooling are performed at the current application station, the machine time becomes long and the product yield is extremely poor. Has become.

In addition, since the machine time is long, the operating time is that much longer, and it is not possible to improve mass productivity.
It has been pointed out that the equipment cost is huge.

The present invention has been made to solve the drawbacks of the rotary type high frequency welder processing method, and the object of the present invention is to shorten the machine time of the apparatus, improve the yield and improve the mass productivity. By doing so, a high-frequency welder processing method is provided, which requires less capital investment and has a ripple effect such as reduction of in-process inventory.

<< Means for Solving the Problem >> In order to achieve the above object, in the high-frequency welder processing method according to the present invention, the high-frequency welder molds are installed at equal intervals on a rotary table, and the upper electrode moves up and down with respect to the lower electrode. A press station for cooling, which is a freely installed and current-carrying station that conducts electricity and performs primary cooling of the workpiece set in the welder mold on the lower electrode by lowering the upper electrode, and a station adjacent to this current-carrying station. The work piece after energization and primary cooling is
A cooling station for the next cooling is installed.

<< Operation >> As is apparent from the above configuration, according to the method of the present invention,
The energizing station performs high-frequency energization and primary cooling, and the adjacent cooling station presses the high-frequency energizing and primary cooling processed in the preceding station. In addition to the primary cooling, the machine time for cooling at this cooling station is shortened.

<Example> Hereinafter, an example of a high-frequency welder processing method according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing a schematic configuration of an apparatus used in the method of the present invention, FIG. 2 is a sectional view of the apparatus in a power failure station, and FIG. 3 is a sectional view of the apparatus in a cooling station.

In FIG. 1, the apparatus used in the method of the present invention comprises a rotary table 10 which is intermittently rotated by 90 °, and four welder dies 11 installed on the rotary table 10 at equal intervals. The feature is that each station in which four welder molds 11 are installed is provided.

That is, along the rotation direction of the rotary table 10, the set station 12, the energization station 13,
Four stations, a cooling station 14 and a release station 15, are installed.

Therefore, after the worker positions and sets the workpiece W such as a resin sheet on the welder mold 11 at the set station 12, the rotary table 10 is intermittently rotated by 90 °, and the set workpiece W is placed. The welder mold 11 is sent to the energization station 13. And
In this energization station 13, as shown in FIG. 2, a lower electrode 16 for supporting the welder mold 11 on the upper surface thereof.
Is installed so that it can move up and down, and this lower electrode 1
6, an upper electrode 17 is provided above it so as to be able to move up and down. Then, the lower electrode 16 is raised and the upper electrode 17 is lowered, so that the workpiece W is subjected to high-frequency energization by the upper electrode 17 and the lower electrode 16, and at the same time, primary cooling is performed with the press pressure being applied. This cooling time is half or less that of the conventional method.

At this time, the welder mold 11 is in a free state with respect to the rotary table 10, and when the energization and the temporary cooling are completed, the welder mold 11 is held on the rotary table 10 again.

Then, the workpiece W that has been subjected to high-frequency welding and primary cooling in the energization station 13 is further sent to the next cooling station 14 together with the welder mold 11 by intermittent rotation of the rotary table 10.
In this cooling station 14, as shown in FIG. 3, a cooling lower table 18 that supports the welder mold 11 on its upper surface is similarly installed so as to be able to move up and down, and this cooling lower table 18 rises. As a result, the workpiece W is cooled with the cooling upper table 19.
Then, cooling is performed in the cooling station 14, and the workpiece W having a predetermined welding strength is further transferred to the rotary table 1
0 is rotated by 90 ° intermittently and sent to the next mold release station 15, where the worker
The workpiece W may be taken out from the welder mold 11.

As described above, in this example, in the rotary high-frequency welder processing method in which the welder mold 11 is set to four types, a cooling station 14 is newly provided in parallel with the energization station for high-frequency energization, and In the method of the present invention, the energization station 13 is used in comparison with the conventional high frequency energization and cooling performed in the same electrode.
The number of seconds for high-frequency power supply and primary cooling performed in
Since the processing is completed in less than one-half and cooling is performed in the next station, there is an advantage that the machine time is shortened, the yield is improved, and the mass productivity is dramatically improved.

Further, the cooling time by the tables 18 and 19 used for the cooling press is the same as the time of energization and primary cooling in the energizing station 13, and the primary cooling time in this energizing station 13 and the cooling time in the cooling station 14 are the same. Since the total sum can be secured, sufficient cooling time can be secured without setting the cooling time to the minimum considering the machine time as in the past, and the welding strength of the workpiece W becomes more reliable. It also contributes to the reduction of defective rate such as occurrence of defective welding.

<< Effect of the Invention >> As is apparent from the above description, according to the method of the present invention,
In the rotary high-frequency welder processing method, a new cooling station was installed next to the energization station that performs high-frequency energization and primary cooling, so the machine time of the welder can be shortened and the product yield improved. At the same time, mass productivity becomes excellent.

In addition, by shortening the machine time in this way, it is possible to increase the operating rate of the equipment, the cost of equipment investment can be reduced, the inventory in process can be reduced, and the assembly process can be synchronized. In addition to the effect of shortening the processing time, there are ripple effects such as efficient management of the processes before and after the process.

Further, according to the method of the present invention, since the time taking into consideration the primary cooling in the energizing station and the cooling time in the newly installed cooling station is set as the total time of cooling, the occurrence rate of defects such as insufficient welding strength is also generated. There is also an effect that it can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a rotary type welder apparatus used in the method of the present invention, FIG. 2 is a sectional view of the apparatus at an energization station, FIG. 3 is a sectional view of the apparatus at a cooling station, and FIG. It is a top view which shows the conventional rotary type high frequency welder apparatus. 10 ... Rotary table 11 ... Lower electrode 13 ... Energizing station 14 ... Cooling station 16 ... Lower electrode 17 ... Upper electrode 18 ... Cooling lower table 19 ... Cooling upper table W ... Workpiece

Claims (1)

[Claims] 1. A mold (11) for a high-frequency welder is installed on a rotary table (10) at equal intervals, an upper electrode (17) is installed up and down with respect to a lower electrode (16), and a lower electrode ( 16) The work piece set in the upper mold (11) for welder is lowered by the lowering of the upper electrode (17).
Energization station (13) for energization and primary cooling
And a cooling station (14) which is provided adjacent to the energization station (13) and which secondly cools the workpiece after energization and primary cooling by the cooling press tables (18, 19). Characteristic high-frequency welder processing method.