JPH0639969Y2 - Rotary resin welder - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary resin welding machine used for welding resin parts such as piping parts and equipment parts formed of fluororesin.

[0002]

2. Description of the Related Art Conventionally, as a method of welding resin parts as described above, for example, as shown in FIG. 5, a body part A formed of synthetic resin at the center of the upper surface of a rotary table 2 is used.
After fixing the tube part B by inserting the synthetic resin tube part B into the center of the body part A, set the body part A
The welding rod D held by the left hand of the operator is pressed to the welding point C between the tube part B and the tube part B, the hot air blower 3 held by the right hand of the operator is brought close to the welding point C, and the rotary table 2 is moved at a constant speed. While rotating with, the welding point C of the body part A and the tube part B, and the welding rod D pressed against the welding point C
And are heated and melted by the hot air H of high temperature blown from the hot air blower 3 and continuously welded.

[0003]

However, as described above, the body part A and the tube part B, which are fixed on the rotary table 2 while holding the welding rod D and the hot air blower 3 by the hand of the operator, are provided. Since the entire circumference of the welding point C is continuously welded, the pressing position and pressing angle of the welding rod D with respect to the welding point C and the hot air H blown from the hot air blower 3 during the welding operation.
Since the heating position, heating angle, and heating interval of the welding easily fluctuate and the welding conditions are unstable, it is difficult to keep the welding conditions constant from the welding start position to the welding end position. It has a problem that it causes Moreover, in order to keep the welding conditions constant, a high degree of welding technology is required, but since the technical difficulty is high, even if the body part A and the tube part B are welded by an expert, all welding points C It is difficult to weld the circumference uniformly, a difference occurs in the adhesive strength of the welded portion C, and pinholes or bubbles are generated in the welded portion C between the body part A and the tube part B. However, there is a problem in that the sealing property of is impaired.

In view of the above problems, the present invention welds a synthetic resin by welding the rod pressing means and the resin welding means to the welding positions of the respective parts fixed on the rotary table in a state where they are closely fixed to each other at appropriate positions. It is an object of the present invention to provide a rotary resin welding machine capable of easily performing the welding work of the respective parts formed in 1. and saving the work and increasing the efficiency.

[0005]

According to the present invention, a welding rod made of synthetic resin is provided at a welding position of each of the first and second parts, which are fixed on the rotary table, in the vicinity of the welding position. It is a rotary resin welding machine provided with a rod pressing means for pressing and a resin welding means for heating and melting the welding points of the respective parts and the welding rod.

[0006]

According to this invention, the first part made of synthetic resin is fixed to the center of the upper surface of the turntable, and the second part made of synthetic resin is fixed to the center of the first part. After this, a welding rod formed of synthetic resin is pressed by the rod pressing means at the welding location between the first component and the second component, and the rotary base is rotated at a constant speed while the welding location between the first component and the second component. When,
The welding rod pressed against the welding location is heated and melted by the resin welding means, and the entire circumference of the welding location between the first component and the second component is continuously welded.

[0007]

According to the present invention, the rod pressing means and the resin welding means are welded to each other at appropriate positions at the welding positions of the first part and the second part fixed on the turntable. As a result, it is possible to uniformly weld the entire circumference of the welded portion of the first component and the second component formed of synthetic resin, the adhesive strength of the welded portion is stabilized, and pinholes, bubbles, etc. are generated during welding. Can be prevented, and the sealability and reliability of the welded portion can be improved. Moreover, since the rod pressing means and the resin welding means are fixed at appropriate positions, the welding conditions for the welding points are always stable, and the welding conditions can be kept constant from the welding start position to the welding end position.
Moreover, the technical difficulty is eliminated, the welding work of the first part and the second part can be easily performed, and the work time required for welding each of these parts is shortened to save the welding work and improve the efficiency. Can be achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. The drawings show a rotary resin welding machine used for welding a body part and a tube part made of fluororesin. In FIG. 1 and FIG. 2, the rotary resin welder 1 includes a rotary table 2 A rectangular body part A made of PTFE resin in the center of the top surface (for example, one side 45 mm)
Fixed to the connection hole Aa (for example, hole diameter φ19 mm, hole depth 5 mm) formed in the center of the upper surface side of the body part A, and
Tube part B made of FA resin (for example, outer diameter φ1
(9 mm, thickness 1.6 mm), and then set the hot air blower 3 placed on the right side close to the welding point C of each part A, B, and the rod holding jig 4 placed on the left side. Each part A,
The welding rod D formed of PFA resin is inserted into the rod pressing jig 4 in the vicinity of the welding point C of B, and is pressed against the welding point C of each of the parts A and B. After that, the rotary table 2 is rotated at a constant speed to weld the body part A and the tube part B at the welding point C.
And the welding rod D pressed against the same welding point C as the hot air blower 3
It is heated and melted by the high-temperature hot air H blown out from the body part A and the tube part B to weld the entire circumference of the welding point C.

In the rotary table 2 described above, a rotary shaft 6 is rotatably vertically supported at the center of the upper surface of the machine body 5 installed at the working position, and the center of the lower surface of the rotary table 2 is centered at the upper end of the rotary shaft 6. The parts are connected and fixed, and the rotary table 2 is rotated in the feed direction at a constant speed by the driving force of the rotation motor 7 with a speed reducer provided in the machine body 5 (for example, about 35 mm / min to about 60 mm / min). To do. Further, the chuck mechanism 8 is arranged in the center of the upper surface side of the rotary table 2, and the body parts A are held and fixed by the chuck claws 8a. In addition,
If the heating temperature at the time of welding is high, the viscosity of the PFA resin decreases, so that the rotation speed of the rotary table 2 is increased to prevent uneven welding.

In the hot-air blower 3 described above, the hot-air blower 3 is connected and fixed to the upper end of the column 9 standing upright on the right side of the rotary table 2 via the connecting arm 10, and the supporting angle of the connecting arm 10 is changed. The outlet 3a of the hot air blower 3 is set to an appropriate angle and an appropriate interval with respect to the welding point C of the body part A and the tube part B fixed on the rotary table 2 by variably adjusting. In addition, the temperature of the hot air H blown out from the air outlet 3a of the hot air blower 3 (the portion separated by 10 mm) is variably set to about 420 ° C to about 450 ° C.

The above-mentioned rod pressing jig 4 has a connecting arm 12 on the upper end of a column 11 standing upright on the left side of the rotary table 2.
The rod pressing jig 4 is connected and fixed via the
Is variably adjusted, and the outlet 3a of the hot air blower 3 is set to an appropriate angle and an appropriate interval with respect to the welding point C between the body part A and the tube part B fixed on the rotary table 2. That is, as shown in FIGS. 3 and 4, the pressing angle of the welding rod D inserted into the rod insertion hole 4 b of the rod pressing jig 4 is set to the rod pressing jig 4 with respect to the rotation center of the rotary table 2. To the side of the center line of θ ₁ angle (about 45 degrees to about 55
Angle) to set the angle, and the center line of the bar pressing jig 4 is moved forward by θ ₂ angle (about 10 °) with respect to the rotation center of the rotary table 2.
Tilt) Tilt and set the angle.

Assuming that the illustrated embodiment is configured as described above, a method for welding the body part A and the tube part B formed of fluororesin by the rotary resin welding machine 1 will be described below. Before starting the work, after cleaning the body part A made of fluororesin, the tube part B, and the welding rod D with a solvent in advance, the rotation speed of the rotary table 2 was set to 40 mm / min, and hot air was blown. The temperature of the hot air H blown from the air outlet 3a of the blower 3 is set to 420 ° C.

Next, as shown in FIGS. 1 and 2, the body part A is placed on the central portion of the upper surface of the rotary table 2 and each chuck claw of the chuck mechanism 8 arranged on the rotary table 2. After holding and fixing the body part A with 8a ..., the hot air blower 3 and the rod pressing jig 4 are set close to the welding point C of the body part A, and the rotary table 2 is rotated once at a constant speed while blowing hot air. The welding spot C of the body part A is heated to a suitable temperature by the hot air H of high temperature blown out from the machine 3.

Next, the tube component B is inserted and set in the connection hole Aa of the body component A fixed on the rotary table 2, and the welding rod D held by the operator's hand is inserted into the rod insertion hole 4b of the rod pressing jig 4. , And the tip of the welding rod D protruding from the holding opening 4a of the rod holding jig 4 is heated to a suitable temperature by the hot air H from the hot air blower 3, and the body part A
The tip of the welding rod D is pressed against the welding point C on the starting end side between the tube part B and the tube part B, and after confirming the welding of each part A and B, remove the hand from the welding bar D inserted in the bar pressing jig 4 and turntable. Rotate 2 at constant speed. That is, the rotary table 2 is rotated once at a constant speed while the welding rod D is pressed against the welding point C between the body part A and the tube part B, and the welding point C of the body part A and the tube part B is welded together. Point C
The welding rod D pressed against is heated and melted by the hot air H of high temperature blown out from the hot air blower 3, and the entire circumference of the welding point C between the body part A and the tube part B is continuously welded.

At the end of welding, after welding by connecting the end-side welding point C of the body part A and the tube part B to the starting-end side welding point C, the rotary table 2 is stopped to rotate,
The hot-air blower 3 is separated from the welding point C of the body part A and the tube part B, and after the temperature of the welding point C is lowered, the welding rod D connected to the end-side welding point C of each of the parts A and B has a predetermined length. Cut at the position.

Next, the rotary table 2 is rotated in the reverse direction to separate the bar pressing jig 3 from the welding position C of the parts A and B, and the holding and fixing by the chuck claws 8a of the chuck mechanism 8 are released. By removing the parts A and B from the rotary table 2 and finishing the end side welding points C of the parts A and B with a cutter or the like, the welding work of the body part A and the tube part B is completed.

As described above, the hot air blower 3 and the rod pressing jig 4 are fixed to the welding position C between the body part A and the tube part B fixed on the rotary table 2 at appropriate positions. Since the welding is performed as it is, the entire circumference of the welded portion C between the body part A and the tube part B can be welded uniformly, the adhesive strength of the welded portion C is stabilized, and pinholes, bubbles, etc. occur during welding. Can be prevented, and the sealing property and reliability of the welded portion C can be improved. Moreover, since the hot-air spraying machine 3 and the rod pressing jig 4 are fixed at appropriate positions, the welding conditions for the welding location C are always stable, and the welding conditions can be kept constant from the welding start position to the welding end position. . And the technical difficulties are eliminated,
The welding work of the body part A and the tube part B can be easily performed, and the work time required for welding these respective parts A and B can be shortened to save the welding work and increase the efficiency.

In the correspondence between the configuration of the present invention and the above-described embodiment, the turntable of the present invention corresponds to the turntable 2 of the embodiment, and hereinafter the first part corresponds to the body part A. , The second part corresponds to the tube part B, the resin welding means corresponds to the hot air blower 3, and the rod pressing means corresponds to the rod pressing jig 4. This invention is not limited to the above embodiment. It is not limited to the configuration.

In the above embodiment, the rotary resin welding machine 1 is used for welding the body part A made of PTFE resin and the tube part B made of PFA resin.
For example, it is also applicable to welding work of parts A and B made of the same resin material such as PTFE resin and PTFE resin or PFA resin and PFA resin, or welding work of parts A and B made of other resin material. can do.

[Brief description of drawings]

FIG. 1 is a front view showing a welding state by a rotary resin welding machine.

FIG. 2 is an enlarged perspective view showing a welded state of a body part and a tube part.

FIG. 3 is a front view showing a set state of a bar pressing jig.

FIG. 4 is a side view showing a set state of a rod pressing jig.

FIG. 5 is a front view showing a welding state according to a conventional method.

[Explanation of symbols]

 A ... Body parts B ... Tube parts C ... Welding points D ... Welding rods H ... Hot air 1 ... Rotary resin welding machine 2 ... Rotary table 3 ... Hot air blower 4 ... Bar pressing jig

Claims (1)

[Scope of utility model registration request] 1. A rotation for welding while rotating a first part made of synthetic resin fixed to the center of the upper surface of a turntable and a second part made of synthetic resin fixed to the center of the first part. Type resin welding machine, which is a rod pressing means for pressing a synthetic resin welding rod to a welding position of each of the parts in the vicinity of a welding position of the first part and the second part fixed on the rotary table. And a resin welding means provided with resin welding means for heating and melting the welding points of the respective parts and the welding rods in the vicinity of the welding points of the first part and the second part fixed on the rotary table. Machine.