JPH0824991B2 - Method for linking chain cyclics - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting chain annular bodies , and in particular, each annular body for constituting a chain used for a chain fence or the like provided at the end of a sidewalk. It relates to a method of connecting.

[0002]

2. Description of the Related Art Generally, a chain is a wire rod that is oval or oval.
Bending into a ring shape, connect them in order, and wire each wire as needed.
Hands that close both ends of the
It is manufactured in order. The seam of each annulus of the chain is an annulus
On the short axis of the ring and on the long axis of each ring.
There are some cases.

For example, when the seam is located on the short axis,
For example, as described in Japanese Examined Patent Publication No. 40-28245.
In addition, the seams of each annulus alternate upward and downward.
Arranged in a line from only two directions, an upper direction and a lower direction
Welded seams, and JP-A-59-19049
Specially control the direction of the seam as described in
Weld the seam of each ring by applying gas and electric current.
I am.

Chains used for chain fences,
The appearance of the appearance is emphasized so that the seams of each ring are conspicuous.
When it is desired to do so, for example,
As described in JP-A-3-36991, it has an elliptical shape.
Elliptical so that the seam is located on the long axis of the oval
An annular body made of wire bent into an oval shape was connected in order.
Chains are used. Also, this real public Sho 53-36991
The report shows that a joint is formed on the major axis of an ellipse or an oval like this.
From an elliptical or oval bent wire so that
The seams of each ring of the chain in which the ring of
As a method, hang the chain vertically while moving it laterally.
Apply the gas burner flame to the chain to
A method for linking carcass chains to each other is described.

[0005]

By the way, if the chain is
When moving along a route, do not loosen it
Pull the chain from the destination to move it along the path
It is moved by that. Oval or oval ring
When pulling and moving the chain connecting the bodies,
The long axis of the object is oriented in the same direction as the moving direction.
As shown in the official gazette, each annular body is sequentially connected in the longitudinal direction.
Moving.

When connecting the joints of the annular bodies by brazing, as disclosed in Japanese Utility Model Publication No. 53-36991, the brazing material is filled in the joints in advance and heated to melt the brazing material. When connecting seams, the direction of heating does not have to be a problem, so it is oval or oval.
Oval or oval with seams on the long axis of
Each ring of a chain in which circular bodies made of bent wire are connected in order
You can connect seams on your body. However, due to welding
So that the seam is located on the major axis of the oval or oval shape
In order, an annular body made of wire bent into an ellipse or an oval
When connecting the joints of the ring-shaped bodies connected to each other,
The torus and the torch at the joint of each torus
Since the welding rod cannot be approached from the proper direction,
It is not possible to connect the joints of each ring by welding.
Yes.

In view of the above circumstances, the present invention has an elliptical shape.
Or oval so that the seam lies on the long axis of the oval
Or oval shaped wire rods are connected in order.
Rings of chains that can be joined together by welding
It is an object of the present invention to provide a method for connecting bodies.

[0008]

SUMMARY OF THE INVENTION The present invention is not elliptical.
No oval so that the seam lies on the long axis of the oval
A circular body made of wire bent into an oval shape is connected in order to form a chain.
And then transfer this chain intermittently along a predetermined path.
A ring that is moved and is in a predetermined welding position during rest of movement
In the method of connecting the annular body of chains for welding the seam of the body,
In order to achieve the purpose described above, bend the above path at the welding position.
On the other hand, each annular body is sequentially connected in the long axis direction, and each
Make sure that the seam of the annular body is located on the opposite side of the moving direction.
And move the chain along the path,
At the bending point, the annulus moves from the path part before the bending point to
Stop the chain when it moves to the road, and then bend this
A ring that has passed a point is shorter than its longitudinal length
The ring-shaped seam that passed through the bending point at the end
On the extension line of the path part after the bending point,
Position the welded body away from the passing ring and weld it.
It is characterized by

[0009]

EFFECTS OF THE INVENTION According to the present invention, bending of a path for moving a chain
At the point the annular body is from the path part before the bending point to the path part after the bending point
Stop the chain when it moves to the minute
Reverse the passed annular body shorter than its longitudinal length.
The joint of the annular body that passed the bending point at the end is bent as above.
Then, on the extension of the path part after the point, pass the above bending point
To place it away from the annular body
So, at this joint without being disturbed by the adjacent annular body
A torch or welding rod can be brought close.

[0010]

EXAMPLE FIG. 1 is a front view of a chain obtained by the method of the present invention, and FIG. 2 is a schematic plan view of a chain-forming wire bending device for forming each annular body constituting the chain. 3, FIG. 3 is a schematic side view of the chain-forming wire bending device, FIG. 4 is a plan view showing a procedure for forming each annular body of the chain, and FIG. 5 is a final stage of forming the annular body. FIG. 6 is a schematic plan view of the chain-forming wire bending device showing the above state, and FIG. 6 is a schematic side view of a welding device for welding the joints of the annular bodies.

As shown in FIG. 1, each ring 2 of the chain 1 is
It is formed in a 0 shape. Each annular body 2 is formed by bending a wire rod 2 ′ sheared to a predetermined length into a U-shape, bending both ends inward into a quadrant circle so as to oppose each other, and welding both end parts opposing each other. It is shaped like a letter.

That is, in the method of connecting the chains 1, the annular body 2 is constituted by the wire, and the seam 2a thereof is positioned so that the annular bodies 2 come into contact with each other in the extended state of the chain 1. Bend 2 ', and at that bend, each annular body 2
Are sequentially connected, each connected annular body is sent to a welding position, and then the seam 2a is connected to the unwelded annular body 2.
And the torch 12 acts on the joint 2a in this state. The ring-shaped body 2 of the chain 1 includes a circular arc portion and a linear portion, an elliptical shape, and a substantially circular shape. Any metal can be used as long as it is a weldable material. Good.

Further, in the step of bending each of the annular bodies 2, the joints 2a are placed so that they are located at the same position in the longitudinal direction of the chain 1, and thereafter, the joints 2a are substantially oriented so as to face upward. The torch 12 is fed into the welding position extending from the horizontal position to the substantially vertical direction, and the annular body 2 to be welded with the seam 2a facing upward is floated above the unwelded annular body 2 in the horizontal state. Preferably.

The chain wire bending device 3 shown in FIGS. 2 to 5 is used for bending the chain 1, and the welding device 4 as shown in FIG. 6 is used for welding the joint 2 a of each annular body 2. Is used. That is, FIG. 2 to strand wire for bending device 3 shown in FIG. 5
Is a forming jig 5, a pair of rollers 6, and a leading ring.
It has a body holding tool 8 and a pair of pressing tools 9. Said forming jig 5 is fixed to a certain position, the roller 6 is the same time advances retreat to both sides of the forming jig 5 in the longitudinal direction (drawing left and right)
I do. The preceding annular body holder 8 holds the previously bent annular body (preceding annular body) 2 and is inserted from the front of the forming jig 5 into the concave groove 7 provided in the front surface of the forming jig 5. As described above, the front surface of the forming jig 5 is moved in the front-rear direction. The pressing tool 9 is bent forward from the front of the forming jig 5 toward the center of the front surface of the forming jig 5 such that both ends of the U-shaped bent wire rod 2 ′ are bent inward into a quadrant circle. It is designed to be driven back and forth.

As shown in FIGS. 2 and 3, the wire 2 ′ is inserted between the forming jig 5 and both rollers 6, and both rollers 6 are simultaneously advanced as shown by an arrow A in FIG. And the wire rod 2 ′ is rolled along the left and right sides of the forming jig 5 by the roller 6
Depending in the squeezed cracks, it is formed in a U-shape. Thereafter, the roller 6 is retracted, the preceding annular body holder 8 holds the preceding annular body 2, and the preceding annular body holder 8 is moved toward the forming jig 5, whereby the preceding annular body is moved. One of the semi-circular portions 2 is inserted into the concave groove 7 of the forming jig 5. Furthermore, after that, by moving the pressing tool 9 obliquely from the left and right sides in front of the forming jig 5 toward the center of the front surface of the forming jig 5, both ends of the wire 2 ′ bent in a U-shape, It is bent into a quadrant circle so that one half arcuate portion of the preceding annular body 2 is wound therein. In this way, the large number of annular bodies 2 connected to each other are once wound up by a winding device (not shown), and the seams 2a of the respective annular bodies 2 are welded by a welding device for joining.

The welding device 4 includes a surface plate 10, a pressing support tool 11, and a torch 12 for argon arc welding, for example.
It has and. The annular body 2 is provided on the upper surface of the surface plate 10.
After being guided and moving horizontally from right to left in the figure,
Guided by the front surface (left side in the figure) of the surface plate 10 of the
Moving. One ring 2 moves horizontally along its path
From the path part that passes through the bending point of the path and descends vertically
When moving to the road portion, the movement of the chain 1 is temporarily stopped.
While the movement of the chain 1 is stopped, the pressing support tool 11 is used as a platen.
Vertically by moving toward the front of 10.
The annular body 2 moved to the descending route part is reversed by 1/2 pitch
Is carried out, and finally the bending point of the path, that is, the surface plate 1
The seam 2a of the annular body 2 that has passed through the front upper corner of 0
On the path after the bend point, that is, on the extension of the vertical path
Then, from the annular body 2 that next passes through the bending point to the annular body 2
Located at a position separated by about 1/2 of the length in the long axis direction
It By this, the joint of the annular body 2 that finally passed through the bending point is
The seam 2a bends next to the annular body 2 that has passed through the bending point first.
Bending of the path without being hidden by the annular body 2 passing through the bending point
It will protrude above the point, and the correct one at this joint
In the opposite direction, for example from above, the torch 12 may interfere with the adjacent annular body 2.
You can move the torch 12 closer without being tempted
Like After this, push the torch 12 from above.
The ring 2 is lowered toward the seam 2a,
After connecting 2a by welding, it is retracted upward. One
That is, the torch 12 is blocked by the adjacent annular body 2.
From the proper direction without a joint 2a of the annular body 2 at the bending point
, Weld it, and then retract it to a predetermined position.
It is possible to weld the joint 2a of the annular body 2 at the bending point by welding.
It can be connected.

After welding, the torch 12 is retracted to a predetermined position.
The movement of chain 1 is resumed during the escape or after the escape.
In this case, first, the annular body 2 of the vertical path portion is
It begins to descend, and the annular body 2 at the bending point moves to the next bending point.
One end of the annular body 2 in the long axis direction, that is, the opposite side of the seam 2a.
Longitudinal direction of the annular body 2 that rides on the opposite side and then moves to the bending point
Move to the next bending point while pulling in the direction in which the direction is upright
The annular body 2 is pulled into the bending point. And this annular body 2
At the same time the chain is drawn through the bending point into the vertical path
By stopping the movement of 1 and repeating the above procedure
The seam 2a of this annular body 2 is welded, and
By repeating the process for each ring 2, ellipse or oval
Oval or oval so that the seam lies on the long axis of the shape
Welded chain of annular body made of wire bent into shape
1, that is, the chain 1 in which the seam 2a is inconspicuous is obtained,
is there.

As described above, according to the present invention , the seam is located on the major axis of the elliptical or oval shape.
Of an annular body made of wire bent into an elliptical or oval shape
When welding the seam, the path that the chain moves is welded
The circular bodies are connected in the longitudinal direction while
And the seam of each annular body is on the opposite side of its movement direction.
Move the chain along the path so that
At the bending point of this path, the ring is the path before the bending point.
Stop the chain when moving from one part to the next part of the path,
After that, the annular body passing through this bending point is
A circular body that has passed the bending point at the end of the loop
On the extension line of the route part after the above bending point,
Located at a position separated from the annular body that next passes the bending point
As it is welded, it is disturbed by the adjacent annular body.
Instead, the seams of each annulus can be welded.

[0019]

[Brief description of drawings]

FIG. 1 is a front view of a chain obtained by the method of the present invention.

FIG. 2 is a schematic plan view of a wire rod bending device for chain making.

FIG. 3 is a schematic side view of a chain bending device.

FIG. 4 is a plan view showing a procedure for forming each annular body of a chain.

FIG. 5 is a schematic plan view of a chain-forming wire bending device showing a final stage formation state of an annular body.

FIG. 6 is a schematic side view of a welding device.

[Explanation of symbols]

 1 Chain 2 Cyclic 2a Seam 12 Torch

Claims (2)

[Claims] 1. A joint is provided on the major axis of an elliptical or oval shape.
Do not use wire that is bent into an oval or oval shape
After connecting the circular bodies in order to form a chain,
Move intermittently along the route of the
Of the chain to weld the seam of the annular body located at the welding position of
In the method of connecting bodies, bending the above path at the welding position
On the other hand, each annular body is connected in sequence in the long axis direction, and
So that the seam of the body is located on the opposite side of its moving direction
And move the chain along the path,
At the inflection point the annulus is from the path part before the bending point to the path after it
Stop the chain when it moves to the part, and then at this bending point
The annulus that has passed through is shorter than its longitudinal length
Then, at the end of the joint of the annular body that passed the bending point,
On the extension line of the route part after the bending point, pass the above bending point next.
Welding at a position spaced from the
And a method for linking a cyclic body of chains. 2. The path portion before the bending point is horizontal.
The path part after the above bending point is vertical,
After stopping, remove the last annulus that passed this inflection point.
This ring is moved backward by half the length of the
Of the seam above the bending point by 1/2 of the length in the long axis direction.
3. The method for connecting chain annular bodies according to claim 1, wherein the welding is carried out at a high position .