JPH0248929A - Automatic welding equipment for synthetic resin materials - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an automatic welding device for joining together products or members made of thermoplastic materials such as synthetic resins.

(Prior Art) As shown in FIG. 21, conventional sphere welding involves holding a welding gun 36 in the right hand and a synthetic resin welding rod 37 in the left hand to join workpieces 42 made of the same synthetic resin material. Place the tip of the welding rod 37 on the portion 42a, and direct the nozzle 136a of the welding gun 36 close to that portion.
A manual welding machine that welds by moving it along the joint part 42a while melting the tip connected to the welding rod, and a welding gun 38 equipped with a welding rod feeding device 39 as shown in FIG. The nozzle part 38a is connected to the welding rod feeding device 5.
9. Operate the feed lever 40 with your finger to release the feed roller 41.
to feed the welding rod 37 and manually weld the workpiece 42.
The welding rod 37 is applied to the joint 421 and moved along the joint 42H to melt the welding rod 37.
A semi-automatic welding machine or the like was used to sequentially weld the parts a.

(Problem to be Solved by the Invention) As described above, in conventional resin welding, the welding gun and synthetic resin welding rod are manually directed and moved to the joint of the workpiece to join by welding. Manual welding machines and semi-automatic welding machines are used, and the operator maintains the welding gun and welding rod at a specified angle relative to the joint of the workpiece, and controls the feeding of the welding rod and the degree of welding to the joint. Since the welding process is carried out by manually moving it along the welding area based on the individual's judgment, there are large individual differences in quality and production efficiency between individual workers. There were problems such as the need to retain skilled specialized engineers.

(Means for Solving the Problems) In order to solve these problems, the present invention combines a synthetic resin welding rod feeding device and a welding gun that operates together with the feeding device at a predetermined angle to move the head portion. An automatic welding device for synthetic resin materials is proposed, characterized in that the head section is mounted to drive the welding rod horizontally and operated by an operating section to interlock the drive of the welding rod feeding device. The head mounted on the machine frame is operated by facing the joint of the workpiece, and the tip of the welding rod fed by the feeding device and the joint of the workpiece are connected to the nozzle of the welding gun. This goal is achieved by sequentially melting the material with hot air jetted from the pipe, and automatically welding by driving the head part that can be linked to this process along the joint.

(Function) The head unit mounted for horizontal driving is brought out onto the joint of the workpiece and operated, and the tip of the welding rod fed in by the welding rod feeding device of the head unit linked to this is joined. The welding head is moved in conjunction with this welding operation and is driven sequentially over the machine frame along the joint of the welding object. At the completion point set for operation, the operation of the welding gun, the driving of the welding rod feeding device, and the driving of the head section are temporarily stopped, and then the head section is driven back to the base point on the machine frame.

In a welding device that is designed to drive the moving direction of the head in two directions perpendicular to each other, by operating these in sequence, the head moves in the direction along one joint, and then moves perpendicular to that direction. It is possible to automatically weld a plurality of joints in succession by driving the weld in the direction shown in FIG.

In addition, in welding equipment equipped with a welding table equipped with a slide table, the slide table can be moved in a direction perpendicular to the direction along the weld by sliding the slide table in response to the horizontal drive of the head, allowing the workpiece to be adjacent to the workpiece. The unwelded joints can be placed over the head section.

In a welding apparatus equipped with an air chuck device on a welding table, a workpiece to be welded can be suctioned and fixed on the welding table, and joint parts brought together can be fixed and held at a desired angle.

In a welding device in which the nozzle part of the welding gun in the head part is driven to swing up and down, the molten heat injection angle of the nozzle part of the welding rod feeding device relative to the welding rod tip and joint part swings up and down, causing the welding rod to move. Welding the tips and joints (top and bottom)
By melting and bonding while vibrating within a certain range along the direction, it works to prevent hot air from being sprayed in a concentrated manner.

(Example) An example of an automatic welding device according to the present invention will be described with reference to the drawings.

1 to 3 are general views of an automatic welding apparatus capable of carrying out the present invention, in which leg bars 2 each having a longitudinal slide rail 2a made of H-beam steel arranged in parallel on the left and right are arranged on the upper part. Slide plates 3, 3 are attached to the slide rails 2a, 2a so as to be driven in the front-rear direction, and a slide rail 4a made of H-shaped steel is horizontally suspended between the slide plates 3.3.
The welding device 1 is mounted downward so as to drive the welding head portion 6 in the left and right directions, and the welding table 50 is attached to the lower welding table 50 facing the welding head portion 6 of the welding device 1.
be equipped with.

FIGS. 4 and 5 are general views of another automatic welding device capable of carrying out the present invention, in which the welding device 1 is mounted on a machine frame 4 having a slide rail 4a fixed and horizontally installed between the left and right leg frames 2, 2. The welding head 86 is mounted downward so as to be driven in the left and right directions, and is slid in the front and back direction orthogonal to the driving direction of the head 6 on the welding table 30 installed opposite to the lower part of the welding head 6. A suction member 35.5 is provided on the slide table 31 with suction holes 34.34 provided on the top surface 33a and side surface 33b.
It is equipped with an air chuck stand 32 consisting of 3 arranged in a row to suction and fix the workpiece to be welded 35° 35 during welding operation, and FIGS. 6 to 8 show the main parts of this air chuck stand 32. It is something.

9 to 14 are diagrams showing each part of a welding head section 6 in an automatic welding apparatus capable of carrying out the present invention. This welding head section 6 is equipped with a welding rod feeding rod mounted vertically on the side surface of a support frame 7. The device 8 is equipped with a welding gun 16 that injects hot air toward the extension of the feeding device 8 at an angle of about 45 degrees. The welding rod feeding device 8 is connected upward from the feeding port 10 on the top surface of the head section to a tipper-shaped socket 1.
A guide 11 provided with a receiving groove 1a, a feed roller 12 consisting of a drive roller 122 and a presser roller 12c provided with a receiving groove 12b on the circumferential surface, and a nozzle 13 are sequentially arranged vertically,
The base edge of the guide plate 14 attached perpendicularly to the lower side of the nozzle 13 is made to protrude into the F'3 hole 13a of the nozzle 13 to serve as a restraint edge 14a, and the guide plate F edge is positioned below the lower end of the nozzle 13. It is made to protrude to form a push-in 14b. The welding gun 16 has its central part supported by a shaft 1γ so that the nozzle part 18 at the tip can swing up and down, and a cam 20 directly connected to a motor 21 is engaged in an operation receiving frame 19 provided at the rear end. During welding operation, the rear end of the welding gun 16 is moved up and down by a cam drive, thereby swinging the tip nozzle s18 up and down.

FIG. 15 shows the mounting of the welding head section 6 on the machine frame 4, in which the welding head part 6 is laterally supported on the support frame 7 and vertically (with the rotating driven wheels 22 and 22) the slide rail 4a of the machine frame 4 is mounted. At the same time, the slide rail 4a of the machine frame 4 is held from the front and back by the driven wheels 23, 23, which are vertically supported and rotated in the horizontal direction, and mounted movably. This prevents swinging and lateral swinging when moving on the 4th floor.

16 and 17, to explain the interlocking drive of the welding head section 6 and welding rod feeding device 8 on the machine frame 4, it is the rack 4b provided along the length direction on the machine frame 4. , head portion 6I: A spur gear 24 directly connected horizontally to the drive shaft 5a of the motor 5 provided in the head portion 6I meshes with the spur gear 24 provided adjacent to the spur gear 24 to mesh with the spur gear 24.
A bevel gear 21 is provided at the lower end of a striped transmission shaft 26, and a drive roller 12a of the feed roller 12 is attached to the other end of a horizontal transmission shaft 29 of a bevel gear 28 provided to mesh with this bevel gear 27. to interlock each other's drives.

In FIGS. 18 to 20, a plurality of welding head parts 6
To explain the automatic welding device 1 in which a plurality of heads are arranged in a row on a support frame 7a, a welding head part 6 is fixed immovably to the machine frame 4, and the nozzle part 18 is moved up and down by one angle in the center. A horizontal rod 19 connects each welding gun 16 and 16 with pivotally supported parts.
a, and this connecting horizontal rod 19a is connected to a crank 20a attached to the motor 21, and the motor 21 is operated at t.
This drive of the crank 20a interlocks the connecting crossbars 19a to vibrate the nozzle portions 18.18 of each welding gun 16.16 up and down, thereby moving the left and right ends of the machine frame 4 to the rack ( The multi-row welding head 6 is mounted on the slide plates 3, 3 of the slide rails 2a, 2a (not shown), and the motor 5 on the plate 3 drives the multi-row welding head 6 in the front-back direction. The mechanism interlocked with the welding rod feeding device (not shown) is the same as that explained in FIGS. 16 and 17 above. This automatic welding device equipped with a multi-row welding head section can be used for a plurality of joints 3 along the same direction.
This is effective in that the objects to be welded 35 having the objects 5a, . . . can be simultaneously and quickly welded.

Each of the automatic welding apparatuses capable of carrying out the present invention described above is equipped with an operation panel equipped with various operation switches on the welding head, and is capable of driving the movement of the welding head, driving the welding rod feeding device of the head, and The interlocking mechanism for the melting operation of the welding gun is configured by setting the speed of each drive according to the thickness of the welding rod, the welding capacity of the welding gun, etc., and by operating this operation panel at any time, a single head unit can be operated. In an automatic welding device equipped with a welding device, the welding head section 6 is operated to transfer the lower end of the welding rod 9 fed by the feeding device 8 to the workpiece 55.
The welding rod 9 is heated by hot air jetted from the nozzle part 18 of the welding gun 16, which is applied to the base point (start) of the joint 35a of the welding rod 9 and is swung up and down along the length direction of the welding rod 9 and the joint 35a. The tip and the joint part 35a are melted and welded while being reciprocated up and down with a constant amplitude along the length direction (see Figures 1.5, 9, 10, and 13.14) to correspond to the progress of this welding process. Then, the welding head 6 is gradually moved and driven on the slide rail 4a of the machine frame 4 in the direction along the joint 35a of the workpiece 35 to achieve a fixed welding distance, that is, the joint 35a of the workpiece 35. The operation is stopped at a point that has gone too far from the end, and the welding end of the welding rod 9 is fused only by the hot air jetted from the nozzle part 18 of the welding gun 16. After the hot air jetting stops, the welding head part 6 is moved to the machine frame 4. It is driven to travel on the slide rail 4a to the base point (start), returns, and stops. Next, move the machine frame 4 to the slide rails 2a of the peripheral frames 2, 2.
, 2a so that the welding head 6 faces the next joint 35a, and by repeating the welding operation by the above operation, the joints 35a of the workpiece 35 are automatically welded one after another. It's something that will happen. By automatically driving and interlocking the manual movement of the machine frame 4 in the surrounding frames 2, 2 with a motor corresponding to the automatic welding by the welding head 6, the welding position of the workpiece 35 (joint Part) It is also possible to make changes automatically.

As shown in FIGS. 4 and 5, slide the slide table 31 on the welding table 30 to move the workpiece 35 to be welded in a direction perpendicular to the direction of the joint 35a (the direction of movement of the welding head 6 on the machine frame 4). It is also possible to change the welding position (joint part) by moving the welding table 30, as shown in Figs. Equipped with an air chuck table 32 consisting of a member 53, each member of the workpiece 35 is attracted to the surface of the suction member 33 of the air chuck table 32 by a suction device (not shown) such as a vacuum pump installed separately, so that they are mutually attached. joint part 35a of
Since the welding head 6 can be fixed at a desired angle and in close contact with each other, highly accurate automatic welding by the welding head 6 can be achieved.

9 to 12, the guide plate 14 provided on the lower side of the nozzle 15 of the welding rod feeding device 8 is connected to the nozzle inner hole 13a.
A restraining support side 14a that protrudes downward from the nozzle inner hole 13a regulates the feeding of the welding rod 9 softened by hot air jet from the welding gun 16 passing through the nozzle inner hole 13a.
The overlay portion 9a formed by the welding rod 9 melt-bonded to the joint portion 35a is held down by b, and further pressed by the pressure roller 15 to form the joint welded portion flush.

(Effects of the Invention) As described above, the automatic welding device of the present invention horizontally drives the head section, which is composed of a welding rod feeding device and a welding gun that operates in conjunction with the welding rod feeding device so as to be exposed at a predetermined angle. The welding rod feeding device in the head and the welding rod feed groove in the head are linked to operate the welding rod in correspondence with each other. It is possible to automatically weld and move the joints of workpieces placed abutting each other along their lengths using a head that drives horizontally back and forth or left and right. It is possible to easily and quickly weld members made of synthetic resin materials using a welding device, and the driving functions of the head section and welding rod feeding device as well as the melting function of the welding gun are operated in correspondence with each other and interlocked. As a result, efficient synthetic resin material welding effects such as high-quality welding with no excess or deficiency can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatic welding device for synthetic borage materials in which the present invention can be carried out, Fig. 2 is a partially omitted side view of the same as above, Fig. 3 is a perspective view of the same as above, and Fig. 4 is a schematic view of an automatic welding device for synthetic borage materials in which the present invention can be carried out. A positive drawing of another automatic welding device that can be used, Fig. 5 is a side view of the above, Fig. 6 is a perspective view of the air chuck stand of the above, Fig. 7 is an enlarged side view of the main parts of the above, and Fig. 8 is a side view of the same as the above. FIG. 9 is a front view of the head section of an automatic welding apparatus in which the present invention can be practiced; FIG. 10 is a front view of the welding rod feeding device in the head section; FIG. 11 is a front view of the welding rod feeding device in the head section; A perspective view showing the nozzle main part of the same feeding device as above, Fig. 12 is a longitudinal sectional front view of the above, Fig. 13 is a front view showing the welding gun of the same head, Fig. 14 is the same): Oscillation amplitude of the welding gun Fig. 15 is a side view showing the state in which the above head is movably attached, and Fig. 16 shows the movement of the above head and the drive of the welding rod feeding device. FIG. 17 is a side view showing the interlocking mechanism, FIG. 17 is a perspective view of the same as above, FIG. 18 is a side view of another automatic welding device equipped with a multi-row head section in which the present invention can be implemented, and FIG. 19 is a plan view of the same. , FIG. 20 is a side view of the main part showing the welding state by the multi-row head section, and FIG.
1 and 22 are both perspective views showing a welding process using a conventional welding machine for synthetic resin materials. In the figure, 1 is an automatic welding device, 6 is a welding head section, 8 is a welding rod feeding device, 16 is a welding gun, 18 is a nozzle section, 3
0 is a welding table, 31 is a slide table, and 32 is an air chuck table. Figure Figure Figure Figure 22

Claims (7)

[Claims] (1) The welding rod feeding device and the head section are mounted so as to be horizontally driven, and the head section is equipped with a welding rod feeding device and a welding gun that operates along with the feeding device and can come out at a predetermined angle. An automatic welding device for synthetic resin materials that is operated in conjunction with a moving mechanism. (2) The head portion has a direction along the welding direction,
2. The automatic welding apparatus for synthetic resin materials according to claim 1, wherein the automatic welding apparatus for synthetic resin materials is mounted so as to be driven in two directions, including a direction perpendicular to this direction. (3) The automatic welding apparatus for synthetic resin materials according to claim 1, further comprising a welding table on which a workpiece to be welded is placed facing the head portion. (4) The automatic welding apparatus for synthetic resin materials according to claim 3, wherein the welding table is equipped with a slide table that moves in a direction perpendicular to the direction of movement of the head part along the welding direction. (5) The automatic welding apparatus for synthetic resin materials according to claim 3 or 4, wherein the welding table is equipped with an air chuck table for fixing the workpiece to be welded. (6) The synthetic resin according to any one of claims 1 to 5, wherein the head section is mounted so as to be driven integrally as a multi-row head section in which a plurality of heads are arranged in parallel in a direction perpendicular to the welding direction. Automatic welding equipment for materials. (7) The automatic welding apparatus for synthetic resin materials according to any one of claims 1 to 6, wherein the welding gun nozzle part of the head part is equipped to swing up and down.