JPH0712487B2 - Ejector device for production line of material pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a series of processing from a welding device to a trimmer device and an edge cutter device to a raw material tube rolled into a band shape from a strip cut to a prescribed size. The present invention relates to an ejector device that is extremely useful when carrying this in and out of a process.

(Prior Art) Conventionally, in the case of manufacturing a material pipe, a strip strip is cut into a prescribed length, and the strip is rolled into a band shape through a coiler. Carry it into the electrode clamp (or clamp horn) of the stationary and movable bases, clamp the abutting surfaces formed on both sides of the band of the material tube, and apply a welding current to this for welding.
The welded material pipe is taken out from the electrode base, inverted, and conveyed to a trimmer device, where the burrs protruding in the welded portion are trimmed. After trimming, the material pipe is subsequently removed from the trimmer device and immediately carried into the edge cutter device to remove burrs adhering to both ends of the weld.

In this way, when the material pipes are sequentially transported to a series of processing stations such as the welding device, the trimmer device, and the edge cutter device, the ejector device is generally arranged at the connection between each process and the material pipes between each process are arranged. Loading and unloading is performed automatically.

In this type of conventional ejector device, the material pipe is extracted from the device of each process, and when it is carried into the next process, it is extracted in the longitudinal direction of the electrode clamp or the clamp horn.
In other words, pull it out almost parallel to the plane centerline of the airframe, then,
The mechanism is such that the work is moved to the insertion position of the machine for the next process by the operation intersecting the center line of the plane, and is inserted from here in the operation substantially parallel to the center line of the machine body (for example, the actual opening 62
-181347 "Wheel rim welding device transfer device" is that).

That is, as shown in FIGS. 1 and 2, this device inserts a band-shaped material pipe W into a welding device 1 with a butt portion facing down, and the butt-welded tubular material is subjected to the following trimmer. In the ejector device 3 carried into the device 2,
A clamper 4 for gripping or detaching the material pipe from both sides in the axial direction, an arm 5 for supporting the clamper so that its position can be adjusted in the axial direction of the material pipe, and a shaft for reciprocating the arm in the axial direction of the material pipe. Directional driving means 6 and reversal to rotate from the welding device to the trimmer device so that the welding portion of the material pipe with the arm held by the clamper is under the welding device from above the welding device to above. The transfer means 8 is provided.

It should be noted that the trimmer device 2 and the planer that smoothes the welded part
The transfer of the work between the transfer device 7 and the side cutter 50 for cutting the burrs formed at both ends of the welded part is performed by the XY two-axis operation of the transfer device 7.

(Problems to be solved by the invention) However, in the conventional ejector device of this kind, the operation in the Y direction for transferring the material pipe substantially parallel to the center line of the plane of the electrode base or the clamp base and the operation substantially perpendicular to this motion. 2-axis XY motion with motion in the intersecting space X direction is required,
In this way, with a design structure that takes into consideration the movement of the XY 2-axis, the moving device becomes complicated and large, leading to cost increase, and the 2-axis operation naturally causes a limit in the transfer speed, shortens the production tact and improves productivity. There was still room for improvement in achieving this.

Therefore, the present invention was developed to solve the above problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention extracts the material pipe after welding from the pair of electrode clamps (15) or clamp horns (14) of the welding machine, and trims the next process trimmer. An ejector device (25), (29) having a swing arm (26) for loading and unloading the device (16) and / or the edge cutter device (20) and the like in a post-welding process, the swing arm (26) The carrying-out or carrying-in operation from the welding process to each post-welding process is performed approximately within a plane that intersects with the center line (A-A) of the material pipe holding position in the device arranged in each process from about 90 degrees. It is configured to be rotated 180 degrees.

(Embodiment) An optimum embodiment of the present invention will be described below with reference to the drawings.

3 shows a schematic plan view of the device of the present invention, and FIG.
The figure is a front view thereof.

In the figure, 10 is the entire welding machine, 11 is the fixed table of the welding machine, and 12 is the movable table. An upset cylinder 13 is a drive source for moving the movable table 12 forward or backward with respect to the fixed table 11.

14 is a clamp horn installed opposite to the fixed base 11 and the movable base 12, and is moved up and down with respect to each electrode clamp 15 supported by the fixed base 11 and the movable base 12, and is inserted into the clamp horn 14. The butting portion of the pipe W is clamped and held in a downward state. 16 is a trimmer device, which clamps both sides of the welded portion of the raw material pipe when the raw material pipe is inserted into the clamp table 30, and the upper blade 18 and the lower blade 19 are arranged along the welded portion between the bite holder 17 from above and below. This is to remove the burrs advancing or retreating and adhering to both sides of the weld.

Reference numeral 20 is an edge cutter device (side cutter), and when the material pipe is inserted into the upper frame 21 with the abutting portion facing downward, the lower frame 23 is lifted by the elevating cylinder 22 and the side cutters 24, 24 both ends of the abutting portion. The burrs adhering to are cut off.

Ejector devices 25 and 29 are arranged between the welding machine 10 and the trimmer device 16 and between the trimmer device 16 and the edge cutter device 20, respectively. The material pipe is carried out from the welding process and the trimming process of the next process is performed. And / or for carrying in and out of the edge cutting process, the swing arm 26 is a horizontal plane twisted from a direction of about 90 degrees with respect to the center line (A-A) of the position for holding the material pipe of the device arranged in each process. It has a drive mechanism (not shown) that rotates in the direction of about 180 degrees inside, and a material pipe is attached to the tip of the swing arm 26 in the plate width direction (B-
A chuck 27 for chucking from B) is provided.

Reference numeral 31 is a lifting device that lifts the clamped material tube from the electrode surface by slightly moving the swing arm in the height direction in order to avoid abrasion when the material tube is pulled out of the welding machine without rubbing the electrode clamp surface. It is a thing.

The horizontal plane that intersects from the direction of about 90 degrees is within a range of ± 20 degrees with respect to the horizontal plane so that even if there is a slight inclination in the vertical direction, there is no problem in transferring the work.

The operation of the device of the present invention having the above configuration will be described.

First, the raw material tube W rolled into a band shape by the coiler is inserted from the chute into the clamp horn 14 of the welding machine 10.
The material tube W set on the clamp horn 14 is clamped and held by pressing the clamp horn 14 with the abutting portion facing downward and setting the required margin from the fixed side electrode and the movable side electrode of 15.

With the butt portion clamped and held in this way, the upset cylinder 13 operates and the welding force is applied to the butt surface, and welding current flows between the electrode clamps 15 due to series energization to form the weld portion. It

On the other hand, during the operation of this welding machine, the ejector device 25 is operated and the chuck 27 chucks the material pipe W from the plate width direction.

When the welding is completed and the clamp horn 14 unclamps the butt portion, the lifting device 28 operates, the chuck 27 moves slightly upward together with the swing arm 26, and the material tube W separates from the electrode surface of the electrode clamp 15. In this way, the swing arm 26 drives the space in the horizontal plane to rotate 180 degrees in the direction of arrow Q from the state where the material pipe is floated.

By this one operation, the material tube W is pulled out from the clamp horn 14, and is inserted into the clamp base of the trimmer device 16 with the abutting portion facing downward.

Next, when the material pipe W supplied now is clamped by the trimmer device 16, the lifting device 31 descends and the trimmer device 16 is lowered.
Upon completion of the clamping, the chuck 27 of the ejector device 25 is released and returns to the original position.

This operation will be repeated thereafter, but this operation is of course the same in the ejector device 29 arranged between the edge cutter device 20 and the trimmer device 16 in the next step.

(Effects of the Invention) As described above, according to the present invention, the biaxial operation corresponding to XY as in the related art is performed only by one operation in the plane indicated by Q, and the driving thereof is performed. By improving the method,
The number of operations is reduced compared to the conventional one, the entire device is simpler and smaller, and the production tact is greatly shortened to improve productivity.

In addition, the operation of the apparatus of the present invention can be carried out at an extremely high speed by using a rotary actuator to reduce the shock to the material pipe by accelerating and decelerating.

Furthermore, not only flash welding but also butt welding with less spatter generation, no mechanical equipment is installed in the spatter scattering direction, that is, in the front side of the welder (front side), so the spatter adhesion prevention cover on the sliding part is prevented. And its opening / closing device, or large-scale incidental equipment such as a soundproof wall or a spatter fume suction device are not required, and it is possible to realize a large economic improvement and to realize a production line facility with excellent maintainability.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a conventional ejector device. FIG. 2 is a plan view of the conventional device. Figure 3 shows
It is a front view which shows the Example of the manufacturing line equipment which has arrange | positioned the ejector apparatus concerning this invention. FIG. 4 is a plan view showing the production line equipment of the device of the present invention. [Explanation of symbols] 10 …… Welder, 14 …… Clamp horn 15 …… Electrode clamp, 16 …… Trimmer device 20 …… Edge cutter device 25,29 …… Ejector device 26 …… Swing arm

Claims (1)

[Claims] 1. A material pipe after welding is taken out from an electrode clamp (15) or a clamp horn (14) forming a pair of a welding machine, and a trimmer device (16) and / or an edge cutter device (20) in the next step is used. An ejector device (25), (29) having a swing arm (26) for loading or unloading it in a post-welding treatment step, wherein the swing arm (26)
The carrying-out or carrying-in operation from the welding process to each post-welding process is performed approximately within a plane that intersects with the center line (A-A) of the material pipe holding position in the device arranged in each process from about 90 degrees. The ejector device in the manufacturing line of the material pipe, which is characterized by being rotated by 180 degrees.