JPH1158528A - Resin welder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the handling property and the weld-workability by a method wherein a resin plasticizing unit which heat-melts a thermoplastic resin is separated from a resin welding unit equipped with a head for applying which discharges a plasticized resin, and the resin plasticizing unit and the resin welding unit are connected with an electrothermal hose. SOLUTION: A resin plasticizing unit 1 which heat-melts a thermoplastic resin is separated from a resin welding unit 3 equipped with a head 2 for applying which discharges a plasticized resin, and the resin plasticizing unit 1, and the resin welding unit 3 are connected with an electrothermal hose 4. Then, a molten resin is fed to the head 2 for applying by a pump for press-feeding of the resin plasticizing unit 1. Therefore, while the resin plasticizing unit 1 which is heaviest is being placed on a floor, a worker holds the resin welding unit 3 only by hand, and a resin welding work can be performed on a wall surface and a ceiling surface. By this method, the resin welding unit can be made light-weight, and the quickness and the the certainty of a resin welding work can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a resin welding machine for welding resin members to each other.

[0002]

2. Description of the Related Art As a conventional resin welding machine, there is known a welding machine in which a welding rod made of a thermoplastic resin material is inserted into a nozzle of a Leister hot air blower, and the welding rod is melted by hot air to perform welding. Also, a welding machine in which a resin plasticizing section and a resin welding section are integrated is known. In this method, a resin is plasticized by operating an electric heater by a motor, and the plasticized resin is discharged from a nozzle by a pump, and has a weight exceeding 7 kg to 10 kg.

[0003]

In a conventional hot-air blower type welding machine, the welding width is narrow and the welding operation requires a high degree of skill. Other conventional examples do not have the drawbacks of the hot air blower type, but are heavy and require physical strength and arm strength to be applied to the wall surface, making the work difficult.

Accordingly, an object of the present invention is to provide a resin welding machine which is easy to handle and can perform welding work easily and quickly.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a resin welding section having a resin plasticizing section for heating and melting a thermoplastic resin and a coating head for discharging the plasticized resin. Are separated from each other, the resin plasticizing section and the resin welding section are connected by an electric heating hose, and the molten resin is fed to the application head by a pump for pressure feeding of the resin plasticizing section.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, a resin plasticizing section 1 for heating and melting a thermoplastic resin is separated from a resin welding section 3 provided with a coating head 2 for discharging the plasticized resin. The plasticized part 1 and the resin welded part 3 connected by an electric heating hose 4 are shown.

FIG. 2 shows the details of the resin welding portion 3. A handle 6 is attached to a main body 5 to which the electric heating hose 4 is connected, and the coating head 2 is provided on the main body 5. Body 5
Is provided with a hot air generator 7, and the hot air generated from the hot air generator 7 is sent out from a hot air nozzle 8.
The hot air nozzle 8 is provided in parallel with the coating head 2. The hot air generator 7 is provided with a power cord 9. The handle 6 is detachable so that it can be attached to other parts of the main body 5. Hold the handle 6 and hold the resin weld 3
Treat the whole as a manual tool. The coating head 2 is for discharging the molten resin sent through the electric heating hose 4, and the shape of the discharge port 2A is prepared for various coating heads 2 changed according to various purposes and applications. It is detachable from the main body 5. 3 shows a discharge port 2A of the coating bed 2 of FIG. 2, and FIG. 4 shows a removable coating head 2.

FIG. 5 shows a resin plasticizing section 1, which includes a tank 10 for storing a thermoplastic resin material, a trochoid pump 11 for pressure feeding, and a motor 12 for operating the pump.
And a universal joint 13 for connecting the motor 12 and the pump 11, an electrical box 14 for controlling the temperature of each part, and a handle 15 for transportation. The tank 10 has a built-in heater, the thermoplastic resin material is plasticized, and the plasticized resin is sent from the pump 11 to the electric heating hose 4 by the operation of the motor 12,
It is discharged from the coating head 2.

FIG. 6 shows a blow molded hollow molded product 20A having a size of 180 mm × 900 mm and a thickness of 50 mm on a wall in a concrete tank having a size of 10 m × 5 m and a height of 2 m.
The figure shows a state in which a plastic panel 20 filled with a plastic foam 20B is mounted inside, and a joint portion between these panels 20 is resin-welded. Panel 20
Was formed of polypropylene, and the same type of polypropylene was used as a welding material. The efficiency of welding work on the wall surface was much easier and quicker than that in which the resin welded portion 3 was separated from the resin plasticized portion 1, because the resin welded portion 3 was separated from the resin integrated portion 1. At the time of such a construction, as shown in FIG. 6, a portion to be welded first is heated by blowing hot air from a hot air nozzle 8 and the molten resin is discharged from the coating head 2 to the heated portion.

In FIG. 7, a plastic H-shaped joiner 21 is provided at a joint of a plastic panel 20, and the plastic H-shaped joiner 21 and the panel 20 are resin-welded. The welding material portion is indicated by reference numeral 30. The panel 20 used here is a blow-molded plastic hollow molded product 20A filled with a plastic foam 20B. When the hollow molded product 20A is formed of polypropylene, it is desirable to use the same type of polypropylene as the material of the joiner 21. In FIG. 7, reference numeral 40 indicates a concrete wall surface.

[0012]

As described above, according to the present invention, the resin plasticizing portion for heating and melting the thermoplastic resin is separated from the resin welding portion provided with the coating head for discharging the plasticized resin. The resin plasticized part and the resin welded part were connected by an electric heating hose and the molten resin was sent to the coating head by the pump for feeding the resin plasticized part, so the heaviest resin plasticized part was placed on the floor. The operator holds only the resin welding portion while holding the resin, and can perform the resin welding work on the wall surface or the ceiling surface. By reducing the weight of the resin welded portion, the operator can easily operate the resin welded portion by hand, and the speed and reliability of the operation can be increased. As a result, welding defects are reduced, and construction stability is improved. In the case of a hot-air nozzle that blows hot air in parallel with the coating head of the resin weld, plasticization is performed by plasticizing with hot air on the surface of the adherend such as a panel or joiner. Adhesion between the welding material discharged from the coating head and the adherend can be ensured.

[Brief description of the drawings]

FIG. 1 is an overall view showing a preferred embodiment of the present invention.

FIG. 2 is a side view showing a resin welding portion.

FIG. 3 is a view showing a discharge port of a coating nozzle of FIG. 2;

FIG. 4 is a perspective view showing another shape of a coating nozzle.

FIG. 5 is a side view of a resin plasticizing section.

FIG. 6 is an explanatory view showing a state in which joints of a wall surface on which a number of plastic panels are arranged are welded.

FIG. 7 is a cross-sectional view showing welding when a joiner is used for the joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin plasticization part 2 Coating head 3 Resin welding part 4 Electric heating hose 11 Pump

Claims (2)

[Claims] 1. A resin plasticizing section for heating and melting a thermoplastic resin is separated from a resin welding section provided with an application head for discharging the plasticized resin, and the resin plasticizing section and the resin welding section are electrically heated. A resin welding machine characterized in that it is connected by a hose and a molten resin is sent out to a coating head by a pressure pump in a resin plasticizing section. 2. The resin welding machine according to claim 1, wherein a hot air nozzle for blowing hot air is provided in parallel with the coating head of the resin welding portion.