JPS5828332A - Fusion-bonding method for thermoplastic resin hollow units - Google Patents

Abstract

PURPOSE:To obtain a preferable connection of thermoplastic resin hollow units by inserting and heating the ends of the hollow units to the pin of special sectional area implanted to a heating plate, butting and fusion-bonding the ends, and suppressing the production of beads in the inner surface of the bonded part. CONSTITUTION:The ends of thermoplastic resin hollow units 8, 10 are respectively inserted to pins 4, 5 implanted to the heating surface of a heating plate 3 and having outer diameters slightly smaller than the bores of the units 8, 10, are heated, and beads 7 produced in the hollow units 8, 10 are flowed along the gap between the inner walls of the units 8, 10 and the pins 4, 5. Then, the plate 3 is removed, the units 8, 10 are butted and connected, and the beads 7 are secured in thin state to the inner walls of the units 8, 10. In this manner, the growth of the heads into the hollow units at the pressing and heating times can be prevented, thereby obtaining preferably connecting structure.

Description

[Detailed Description of the Invention] The purpose and purpose of the present invention is to obtain a good connection by suppressing the redundancy of the peas occurring on the inner surface of the connection part. 0 Parts made of thermoplastic southern resin are easily melted by heating the mounting surface above the melting point and applying pressure shields! ! Therefore, the bathing method is often used for assembling parts. Moreover, the stiff melt layer f:, rc
Because the bathing surface is heated and the pressure layer is applied, the molten flank is pushed out to the welding surface to the chest circumference.

This is called a to-do, or a stiff bead.

The hollow body parts are melted and soaked, and the connecting part υ cross section is locally reduced, resulting in a small diameter, or a small diameter υ hole, a small diameter υ hole, and a small diameter υ hole. Hollow hole is blocked n/
) 9. Revision or change is desired 9. Conventionally effective method 1
It has not been suggested.

Normally, the thermoplastic resin intermediate υm layer process involves the heating plate IL↓/
) 0 bead V, which is a cycle of ordinary heating υ pressurized caloric heat → removal of hot plate → pressurized cooling υ, grows during pressurized heating and at the beginning of pressurized cooling, and the former is the majority. The bead kl is lengthened. Therefore, the invention was to attach a rather small bottle to the end (υ) of the heating plate to which the hollow body should be connected (3), and to attach a relatively small bottle to the end (υ) of the hollow body that should be connected to the heating plate (3), so that when heating under pressure, the inside of the hollow body was 0. It is impossible to prevent the growth of VC technology by using a suitable connection structure.
Figure 1 shows a side view of the solar collector, showing that the heat collection plate 1, which is made up of many υ tubes r arranged in parallel, and the tubular header 2 are assembled using a melt layer. V on board 1
As shown in FIG. 2, a large number of water pipes 10 each having a circular diameter of 6 m/□ pass through the pipe, each of which is provided on the header 2υ@ surface and communicates with a friend header branch 1t9. As a solar collector, water is passed through two headers (9) and divided into the heat collecting plate (1), and the other header (2') is used to absorb solar heat into the water (conventional flat plate). Figure 2 shows a cross-section of the @-υ connection when the heat collector plate 1 and the header 2 are melted with a heating plate of the shape of the shape. 10 is narrowed down ・Figure 5 shows an embodiment of the present invention, @ 7Q
VC leading header branch pipe 9 and heat collection plate water passage 'i1
Bottle 4-5i with a smaller outer diameter than the inner diameter L of 0
ts sword mouth hot plate 5υ installed in the heating direction, header υ in the bin
Heat while inserting the end of the branch pipe 9L and heat collection @CO water flow W10υ that should be connected. At this time, the inner and outer surfaces VC of the branch pipe and the water pipe 10υ will be sloppy, but the inner bead 7rc, the inner bead 7rc, the inner surface of the water pipe 9 and the water pipe 10υ, and the bottle 5 will be generated.
Flowing along the gap. Next, heat plate 3t and 9μr, branch pipe 9 and water pipe 10? Since the round bead 7 of the connector n is thinly attached to the inner wall of the branch pipe 9L and the water pipe 10, the connection part will not be blocked. Conventional 1/IJ hot plate rc L Ruage@ has an inner diameter of 5
The μ connection was often blocked due to rfi/m, but the uninvented VC is very good even when the circle diameter is less than 5 m/□. The connection obtained is also υ0
2. In the above embodiment 2, no solar collector was explained, but unless the cost of the present invention is exceeded, other υ
It can be applied to thermal OT plastic media connections.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the saw 2-collector, Fig. 2 V is a partial sectional view showing the connection part by the conventional RC method, and Fig. 3 T shows the embodiment of the present invention. A cross-sectional view of the blade section. Explanation of symbols 1 Heat collection plate 2 Header 5 Blade hot plate 4 Bin 5 Bin 6 External beat 7 Circular bead 8 Header transfer section 9 Header branch pipe 10
Water pipe Figure 1 Figure 2

Claims (1)

[Claims] 1. The open end of the thermoplastic resin hollow body υ heat increase method e. Then, the cross-sectional area of the end υ of the hollow body of the valley heat OIJ plastic side fat is slightly smaller than that of the hollow body. Elaborately heat the heat aJ plastic side fat hollow g @ part in the sword mouth heat & υ bottle where the bottle with the area south is planted, and then heat the heat aJ plastic side fat hollow part g@ part, then υchi each heat town Hotaru Shusen Attach the fat hollow end t to the melting layer 0
A method of sanitizing a hot plastic side fat hollow body O bath which is similar to T.