JP2002079311A - Method and apparatus for continuously feeding lengthwise material in press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a method and an apparatus capable of continuously and efficiently feeding lengthwise materials to a press and improving the press workability of the press, thereby drastically reducing cost. SOLUTION: The apparatus 10 for continuously feeding the long materials is provided with a 1st cutter and a 2nd cutter which are vertically adjacent. By operating these 1st and 2nd cutters, the rear terminal of a long size material X which is already fed to the press 40 and the tip terminal of a long size material Y for newly feeding are cut at the same time and simultaneously the terminals are fit and connected each other. Then, special work for joining both long size materials X, Y is unnecessary and joining treatment is performed in a short time, so the press workability of the press is improved and the cost is drastically reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous material supply method and a continuous material supply apparatus for a press machine which continuously supplies a long material to a press machine.

[0002]

2. Description of the Related Art In a press machine, a progressive process in which a raw material is sequentially fed and processed in each process using a mold having a plurality of processes (so-called progressive die) is often performed. In the press machine that performs this progressive processing, a long material (so-called hoop material) wound in a coil shape is sequentially and continuously supplied as a raw material, thereby efficiently producing a large number of pressed products. can do.

Incidentally, since the length of the long material (hoop material) supplied to the press machine as described above is of course finite, the remaining amount of the long material is lost and the rear end portion (so-called material) is lost. When the cut is reached, another new long material needs to be supplied (replaced with a new long material). In this case, conventionally, it has been necessary to perform a special operation in which another new long material is set again in the press machine, and further, a tip portion thereof is fed into the press machine by a predetermined amount. In other words, it is necessary to process each new step while sequentially handing the leading end of a new long material from the first step to the final step of the progressive die, and after a series of steps, Otherwise, continuous supply could not be made.

As described above, in the conventional procedure for supplying a long material in a press machine, the work for supplying another new long material is complicated, and during the replacement operation, the usual press work is performed. The work was interrupted for a long time, and the work efficiency was greatly reduced and the manufacturing cost was increased.

[0005]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention can efficiently and continuously supply long materials to a press machine by connecting the long materials. It is an object of the present invention to provide a continuous material supply method and a continuous material supply apparatus for a press machine which can reduce the cost.

[0006]

According to the first aspect of the present invention, there is provided a method for continuously supplying a long material to a press machine, the method for continuously supplying a long material to a press machine. For joining a rear end of the long material already supplied to the press machine and a front end of a new long material to be supplied to the press machine following the long material. The joining position is set on the supply movement trajectory of the long material already supplied to the press machine, and the leading end of the new long material is temporarily held near the joining position, and the press machine When the end of the long material already supplied to the terminal reaches a predetermined position, the supply of the long material to the press machine is temporarily stopped, and then,
The front end of the temporarily held new long material is vertically overlapped with the rear end of the long material on the joining position, and the ends of the superposed two long materials are fitted to each other at the joining position. At the same time cut into mating male and female wedge shapes and at the same time matingly connect the ends of each other,
The supply of the fitted and connected two long materials to the press machine is restarted.

In the continuous material feeding method for a press machine according to the first aspect, first, the rear end of the long material already supplied to the press machine and the long material are supplied to the press machine following the long material. Position for joining the new long material to the leading end of the long material is set on the supply movement trajectory of the long material already supplied to the press machine. In addition, near the joining position, the leading end of the long material to be newly supplied is temporarily held.

Here, when the remaining amount of the long material already supplied to the press machine is exhausted and the terminal reaches a predetermined position thereafter, the supply of the long material to the press machine is temporarily stopped. Next, the front end of the new long material temporarily held is vertically overlapped with the rear end of the long material on the joining position, and the ends of the two long materials overlapped at this joining position are fitted to each other. The female and female wedges are cut at the same time and at the same time the terminals of the two are fitted and connected.

[0009] Thereafter, the supply of the fitted and connected long materials to the press machine is resumed.

As described above, according to the method for continuously supplying long material for a press machine according to the first aspect of the present invention, when a long material being supplied is lost as in the prior art, another new long material is supplied to the press machine. There is no need for special work such as resetting this new new long material to the press machine again or sending the tip of the new material to the press machine by a predetermined amount.
The long material can be efficiently and continuously supplied to the press machine. Therefore, the press workability of the press machine is improved, and the cost can be significantly reduced.

According to a second aspect of the present invention, there is provided the continuous long material feeding method for a press machine according to the first aspect of the present invention. The fitting connection portion is welded while holding the two long materials at the joining position, and after the welding, supply of the two long materials to the press machine is restarted.

[0012] In the continuous material feeding method for a press machine according to the second aspect, while the two long materials fitted and connected at the joining position are held at the joining position, the fitting connection portion is further formed. Weld. After this welding, the supply of both long materials to the press machine is resumed.

Therefore, the joining of the two long materials becomes more reliable, and the long materials can be reliably and continuously supplied to the press machine.

According to a third aspect of the present invention, there is provided the continuous long material feeding method for a press machine according to the first or second aspect, wherein the long material is continuously supplied. The joining position of the two long materials is set on the basis of the pressing position of the long material by the press machine so that the joining position is an unnecessary portion other than the press-formed portion by the press machine.

According to a third aspect of the present invention, the joining position of the two long materials is set based on the position of the long material pressed by the press machine (the position of the die). Accordingly, it is possible to prevent the joining position of the two long materials from being a press-formed portion by the press machine, and to effectively utilize the two long materials.

The press-formed portion refers to a portion that is punched from a long material to be a pressed product.

According to a fourth aspect of the present invention, there is provided a continuous material supply apparatus for a press machine for continuously supplying a long material to a press machine. Temporarily holding the leading end of the long material to be newly supplied to the machine, vertically overlap the rear end of the long material already supplied to the press machine, and in the overlapped state, It is characterized in that it is provided with cutting fitting means for simultaneously cutting the ends of the long material into male and female wedges which are fitted to each other, and simultaneously fitting and connecting the terminals at this cutting position.

According to a fourth aspect of the present invention, there is provided an apparatus for continuously feeding long material for a press machine, comprising cutting and fitting means. The terminal is temporarily held.

Here, when the remaining amount of the long material already supplied to the press machine is exhausted and the terminal reaches a predetermined position thereafter, the supply of the long material to the press machine is temporarily stopped. Then, the front end of the new long material temporarily held by the cutting and fitting means, by this cutting and fitting means,
The long material already supplied to the press machine is vertically overlapped with the rear end of the long material.Furthermore, both ends of the long material are cut simultaneously into male and female wedges in which the ends of the long material are fitted together. In this cutting position, the two terminals are simultaneously connected at the same time.

Thereafter, the supply of the fitted and connected long materials to the press machine is resumed.

As described above, in the continuous material supply apparatus for a press machine according to the fourth aspect of the present invention, the long material supplied as in the prior art is lost and another new long material is supplied to the press machine. There is no need for special work such as resetting this new new long material to the press machine again or sending the tip of the new material to the press machine by a predetermined amount.
The long material can be efficiently and continuously supplied to the press machine. Therefore, the press workability of the press machine is improved, and the cost can be significantly reduced.

According to a fifth aspect of the present invention, there is provided the continuous long material feeding apparatus for a press machine according to the fourth aspect, wherein the cutting and fitting means includes the new long material. A first cutter for temporarily holding the leading end of the shaping material and cutting it at the cutting fitting position;
A second cutter for cutting the rear end of the long material already supplied to the press machine at the cutting fitting position, wherein the first cutter and the second cutter are both long and short. A cutting surface for cutting the ends of the material into male and female wedges that are fitted to each other, and the first cutter and the second cutter perform cutting operations simultaneously in the vertical direction, so that the ends of the two long materials are cut. Are fitted and connected to each other.

In the continuous material feeding apparatus for a press machine according to the present invention, the first cutter constituting the cutting and fitting means temporarily sets the leading end of the long material to be newly supplied to the press machine. Will be retained.

When joining the newly supplied long material and the already supplied long material, the first cutter and the second cutter simultaneously perform the cutting operation in the vertical direction. As a result, the ends of the two long materials are cut into male and female wedges that fit with each other, and are fitted and connected to each other.

As described above, in the continuous material supply apparatus for a press machine according to the fifth aspect, the first cutter and the second
The terminal of both long materials can be fitted and connected by one cutting operation of the cutter, and the mechanism is simplified.

According to a sixth aspect of the present invention, there is provided the continuous material supply apparatus for a press machine according to the fourth or fifth aspect, wherein the continuous material supply apparatus for a press machine is fitted by the cutting fitting means. It is characterized in that a welding means is provided for welding the fitted connection portion while holding the two long materials joined together at the cutting fitting position.

[0027] In the continuous material feeding apparatus for a press machine according to the sixth aspect, the two long materials fitted and connected by the cutting and fitting means are held at the cutting and fitting position while the fitting and connecting portions are formed. Are welded by welding means.

Accordingly, the joining of the two long materials becomes more reliable, and the long materials can be reliably and continuously supplied to the press machine.

According to a seventh aspect of the present invention, there is provided a continuous long material feeding apparatus for a press machine according to any one of the fourth to sixth aspects, wherein
When vertically overlapping the front end of the long material to be newly supplied and the rear end of the long material already supplied to the press machine, the widthwise edges of both long materials are overlapped. It is characterized by comprising pressing means for pressing and aligning each other.

In the continuous material feeding apparatus for a press machine according to the present invention, when the ends of the two long materials are vertically overlapped at the joining position, the edges in the width direction of each other are pressed by the pressing means. Are pressed and aligned with each other. Therefore, the terminals of both long materials can be joined with high accuracy and certainty.

According to an eighth aspect of the present invention, there is provided the continuous long material feeding apparatus for a press machine according to any one of the fourth to seventh aspects.
Press machine connecting means for setting the joining position of the two long materials based on the pressing position by the press machine so that the joining position of the two long materials becomes an unnecessary portion other than the press-formed portion by the press machine. It is characterized by having.

In the continuous material feeding apparatus for a press machine according to the eighth aspect, the joining position of the two long materials by the press machine connecting means is based on the pressing position (the position of the mold) of the long material by the press machine. Is set as This allows
It is possible to prevent the joining position of the two long materials from being a press-formed part by a press machine, and it is possible to effectively utilize both the long materials.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing the entire structure of a continuous material supply apparatus 10 for a press machine according to an embodiment of the present invention. FIG. 2 is a front view of the continuous material supply device 10, and FIG. 3 is a side view of the continuous material supply device 10. Furthermore,
FIG. 4 is a perspective view showing a configuration of a main part of the continuous material supply device 10.

The continuous material supply device 10 joins another new long material Y to a long material X (a so-called hoop material) supplied to a press machine 40, and This is for supplying X and Y continuously and continuously. The tip side of the long material X wound in a coil shape is sequentially supplied to the press machine 40, and the long material continuous supply device 10 corresponds to the middle of the long material X, It is located close to you.

In the present embodiment, the long materials X and Y have, for example, a thickness of 0.4 mm and a width of 3 mm.
A 6 mm one is used.

The continuous continuous material supply device 10 includes a machine foot 1,
A machine base 2 attached to the machine base 1, a lower table 3 attached to the machine base 2 and moved back and forth (in the horizontal direction in FIG. 3) by a hydraulic silling (not shown) provided in the machine base 2; A frame 4 mounted on the table 3, a hydraulic cylinder 5 mounted on the head of the frame 4, and a hydraulic cylinder 5
And an upper table 6 which is attached to the piston and moves up and down. With this configuration, the lower table 3, the frame 4, the hydraulic cylinder 5, and the upper table 6 move integrally back and forth. The forward and backward movement is regulated by the engagement of a hooking piece 7 attached to the side surface of the lower table 3 with a forward stopper 8 and a backward stopper 9 attached to the machine base 2.

As shown in FIG. 5, a pair of lower die sets 28 and upper die sets 29 are attached to the lower table 3 and the upper table 6, respectively. The lower die set 28 is attached to the lower table 3, and the upper die set 29 is attached to the upper table 6, and is embedded in the posts 31 (two right and left) planted in the lower die set 28 and the upper die set 29. By fitting the bushings 33 (two right and left), the upper die set 29 can be moved up and down with respect to the lower die set 28 with high accuracy without misalignment. The surfaces of the lower die set 28 and the upper die set 29 have grooves 37, 3 for releasing cut pieces when cutting the long materials X, Y.
9 are formed.

The lower die set 28 and the upper die set 29 have a first cutter 22 and a second
Is mounted. First cutter 2
Numeral 2 is for cutting the leading end of the long material Y, and is constituted by a pair of male dies 22A and female dies 22B. The second cutter 24 is for cutting the rear end of the long material X, and includes a pair of male dies 24A and female dies 24B.
It is constituted by. Male and female dies 22A, 22B, 24A, 24 of first cutter 22 and second cutter 24
B are all formed in the same external dimensions (length, width, and thickness). Then, the male dies 22A and 24A and the female die 22
B and 24B face each other, and
As shown in FIG. 4, male and female wedge-shaped cut surfaces (cutting blades) 26 that fit each other are formed. Therefore, the cutting operation of the first cutter 22 and the second cutter 24 simultaneously cuts the rear end of the long material X and the front end of the long material Y at the same time, and furthermore, both the long materials X and Y Can be fitted and connected to each other.

The male and female wedge shapes of the cutting surfaces 26 of the first cutter 22 and the second cutter 24 are not limited to the triangular shape shown in FIG. , Y as long as they can be fitted and connected.

The first cutter 22 and the second cutter 24 have guide holes 11A formed on one side thereof (FIG. 14).
Guide pin 11 implanted in the lower die set 28
It is mounted so that it can be moved up and down accurately without misalignment in a state where the male and female cut surfaces 26 are fitted together. That is, the male die 22A of the first cutter 22 is fixed to the upper die set 29 in a state fitted to the two left guide pins 11, and the female die 22A
B is attached to the two right guide pins 11 so as to be vertically movable. The female die 22B is suspended by the suspension bolts 13 so that the upper surface thereof is held at a position lower than the lower surface of the male die 22A by the thickness of the long material Y. Reference numeral 13A shown in FIG.
And is screwed to the suspension bolt 13.

The male die 24A of the second cutter 24
Is mounted below the male die 22A of the first cutter 22 so as to be movable up and down while fitted to the two left guide pins 11, and the female die 24B is mounted on the female die 22B of the first cutter 22. The lower part is fixed to the lower die set 28 in a state of being fitted to the two right guide pins 11. Male die 2
4A, an engagement piece 15 is formed on the rear surface, and a lever 17 is attached to the frame 4 and one end of which is engaged with the engagement piece 15, and an air cylinder which presses the other end of the lever 17 19 to move up and down. The upward movement of the male die 24A causes the first cutter 22
The lower surface of the male die 22A and the male die 2 of the second cutter 24
The front end of the long material Y can be temporarily held between the upper surface of 4A and the upper end of the long material Y.

Four (two right and left) pilot pins are provided on the left and right side surfaces of the upper table 6 in order to determine the position in the front-rear direction (the width direction of the material Y) when temporarily holding the long material Y. 41 is provided vertically. This pilot pin 4
1, a temporary holding position S of the long material Y (the center position is indicated by a dashed line in each drawing) is set.

On the other hand, on the front side of the temporary holding position S of the long material Y, the conveyance supply path R of the long material X (the center position is indicated by a dashed line in each drawing) by a guide roller 12 or the like. Has been configured). This transport supply path R
Is set so as to always have a constant path with respect to the press machine 40, and the height thereof is set to substantially correspond to the upper surface position of the female die 24B of the second cutter 24.

A pair of upper and lower clamp arms 16 and 18 that are attached to the lower table 3 and move back and forth integrally with the lower table 3 are disposed in the middle of the transport supply path R. The clamp arms 16 and 18 correspond to the upper and lower surfaces (front and back) of the long material X on the transport supply path R, and are connected to the cylinder 2 connected to the lower clamp arm 18.
By the operation of 0, the long material X can be sandwiched and held from above and below. Further, the upper clamp arm 16 has a gap in the center thereof, and this gap matches the position of the cutting surface 26 of the first cutter 22 and the second cutter 24 (when viewed from the front). Match)
It is set as the joining position of the long materials X and Y.

In the vicinity of the left and right pilot pins 41, when the leading end of the long material Y and the rear end of the long material X are vertically overlapped, both edges of the long materials X and Y in the width direction are overlapped. Pressing means for pressing them so as to sandwich them and aligning them with each other. In this pressing means, alignment arms 43 are slidably attached to guide rails 42 attached to the left and right sides of the frame 4 in the front-rear direction. At the front end of the alignment arm 43, a front finger 44 is vertically provided, and a long material X is provided.
Is located forward of the transport supply path R. An air cylinder 46 is attached to the rear of the alignment arm 43,
A rear finger 48 is attached to the piston. The rear fingers 48 are located behind the temporary holding position S of the long material Y, and form a pair facing the front fingers 44.

A stopper 50 is screwed to the front finger 44 so as to be adjustable in position. When the air cylinder 46 is actuated, the stopper 50 is connected to the front finger 44 and the rear finger 4.
The distance between the fingers 44 and 48 is set so that the closest distance between the fingers 44 and 48 is the same as the width of the long materials X and Y (exactly slightly longer than the width of the long materials X and Y). To prevent deformation of the long materials X and Y due to the pressing (clamping force). A stopper 52 attached to the guide rail 42 is provided behind the rear finger 48.
The stopper 52 comes into contact with the rear surface of the rear finger 48 to regulate the retracted position thereof.

On the other hand, on the front side of the clamp arms 16 and 18, welding means attached to the machine base 2 and moved back and forth (in the horizontal direction in FIG. 3) by a motor (not shown) provided in the machine base 2. Is disposed. The position of the welding machine 34 matches the position of the cutting surface 26 of the first cutter 22 and the cutting surface 26 of the second cutter 24 (coincident in front view), and moves within the central gap of the upper clamp arm 16. , And comes into contact with and separates from the transport path R of the long material X.

Further, a rear end detection sensor 36 is arranged on the transport supply path R of the long material X upstream of the clamp arms 16 and 18 and the first cutter 22 and the second cutter 24. . The rear end detection sensor 36 can detect the rear end of the long material X already supplied to the press machine 40. Based on the detection signal of the rear end detection sensor 36, the operation of the press machine 40 is performed. The supply of the long material X to the press machine 40 is temporarily stopped, and a material joining process described in detail later is performed.

The continuous material supply apparatus 10 having the above-described structure is used.
Are integrally connected to a press machine 40 by a fixing stay 38 as press machine connecting means. In this case, the length dimension of the fixed stay 38 is determined based on the pressing position (the position of the die) by the press machine 40 with respect to both the long materials X and Y by the first cutter 22 and the second cutter 24 described above. It is set in association with the cutting engagement position. That is, the first cutter 22 is set so that the cutting fitting position (joining position) of the two long materials X and Y is an unnecessary portion other than the press-formed portion by the press machine 40.
The arrangement positions of the second cutter 24, the clamp arms 16, 18 and the like are set based on the length of the fixed stay 38 with reference to the press position by the press machine 40.

Next, the operation of the present embodiment will be described together with the continuous material supply method for a press machine according to the present invention.

As shown in FIG. 3 and FIG.
It is in a state of waiting at a predetermined position on the upper rear side. That is, the lower table 3 is retracted by the latching pieces 7 of the lower table 3 being brought into contact with the reverse stopper 9 of the machine base 2 by the hydraulic cylinders provided in the machine base 2. Therefore, the frame 4, the hydraulic cylinder 5, the upper table 6, the upper die set 29, and the lower die set 2 which are integrally mounted on the lower table 3
8, the first cutter 22, the second cutter 24, the clamp arms 16, 18 and the like are also waiting at a predetermined rear position.

Similarly, the pressing means integrally mounted on the lower table 3 (more precisely, on the frame 4) is shown in FIG.
As shown in FIG.
And the front finger 44 is located forward of the transport supply path R of the long material X. Also, a welding machine 34 as welding means mounted on the machine base 2 separately from the lower table 3
Are waiting further forward than the clamp arms 16 and 18.

First cutter 22 as cutting and fitting means
The initial state of the second cutter 24 is as shown in FIGS. 5B and 6B.
And is stopped at the top dead center together with the upper die set 29. The first cutter 22 is a male die 22A.
Is fixed to the upper die set 29 and is at the uppermost position, and the female die 22B is hung by the hanging bolt 13 and hangs down by its own weight. In the second cutter 24, the female die 24B is fixed to the lower die set 28 and is at the lowest position. The male die 24A is lowered onto the lower die set 28 (not shown), and the two dies 24A and 24B The cut surfaces 26 are in a fitted state. At this time, the air cylinder 19 is in a state in which the piston is retracted upward and does not act on the vertical movement of the male die 24A together with the lever rod 17 (the state shown by the two-dot chain line in FIG. 5A). ).

In such an initial state, the long material X
Are transported on the transport supply path R between the upper and lower clamp arms 16 and 18, and are sequentially supplied to the press machine 40.

Here, the leading end of the new long material Y to be supplied to the press machine in advance is connected to the pilot pin 4 on one side.
1 (left side in FIG. 5 (B)), then through the lower surface of the male die 22A of the first cutter 22 and the upper surface of the female die 22B, and the other side of the pilot pin 41 (of FIG. 5 (B)). (The right side of the paper), and is further pulled out to a position just past the front finger 44 of the pressing means on the other side.

Next, the operation cylinder (not shown) is operated to operate the air cylinder 19 (the piston is advanced downward), and the male die 24A of the second cutter 24 is lifted upward through the lever rod 17. . As a result, the leading end of the next new long material Y is sandwiched between the lower surface of the male die 22A of the first cutter 22 and the upper surface of the male die 24A of the second cutter 24, and a predetermined temporary It is held at the holding position S.

At this point, the second cutter 24
Male die 24A (and female die 2 of first cutter 22)
2B) and the female die 24B are separated by a predetermined distance, and a predetermined gap is opened between them. The initial state up to this point is shown in FIGS.

Eventually, the press processing by the press machine 40 proceeds, and the remaining amount of the long material X already supplied to the press machine 40 gradually disappears. Thereafter, when the terminal is detected by the rear end detection sensor 36, The operation (vertical movement) of the press machine 40 and the supply of the long material X to the press machine 40 are temporarily stopped based on the detection signal.

Next, as shown in FIG. 7, the lower table 3 is advanced by a hydraulic cylinder provided in the base 2.

As the lower table 3 moves forward, the clamp arms 16 and 18 also move forward and out of the conveyance supply path R for the long material X, and the first cutter 22 and the second cutter 24 also move forward. The long material X enters the conveyance supply path R so as to be replaced with the clamp arms 16 and 18. That is, the lower surface of the male die 24A of the second cutter 24 (and the lower surface of the female die 22B of the first cutter 22) and the female die 2
The gap with the upper surface of 4B enters so as to sandwich the long material X. Then, the temporary holding position S of the long material Y is
When the position coincides with the position of the transport supply path R, the stop piece 7 of the lower table 3 comes into contact with the forward stopper 8.

On the other hand, as the lower table 3 advances, the alignment arm 43 as a pressing means and the front finger 4
4. The air cylinder 46 and the rear finger 48 also move forward without change. Next, the air cylinder 46 is driven,
The rear finger 48 advances and abuts one edge of the long material X, Y in the width direction. However, the long material X, Y is such that the long material Y is positioned between the pilot pins 41 and the male die 22A of the first cutter 22 and the second cutter 2
It does not move because it is held by the fourth male die 24A. Then, the air cylinder 46 is connected to the rear finger 4.
With the piston 8 being pushed out while the abutment 8 is in contact with the long materials X and Y, it slides on the guide rail 42 together with the alignment arm 43 and retreats. Therefore, the front finger 4
4 also retreats together with the alignment arm 43 and comes into contact with the other edge in the width direction of the long materials X and Y (see the two-dot chain line in FIG. 7A and the pressing means in FIG. 9). As a result, both long materials X and Y
Are securely aligned by sandwiching both end edges thereof between the front finger 44 and the rear finger 48, and the transport supply path R for the long material X
It is accurately superimposed on top.

At this time, the stoppers 50 prevent both fingers X, Y from being deformed by the pressing (clamping force) of the fingers 44, 48.

FIG. 8 shows the rear end of the long material X and the long material Y.
Of the first cutter 22 and the second cutter 24
FIG. 5 is a schematic view showing a step of simultaneously cutting and fitting and connecting by means of FIG. As described above, when the two long materials X and Y are overlapped in the vertical direction (FIG. 8A), the hydraulic cylinder 5 is actuated, the upper table 6 is lowered, and the upper die set 29 and The first cutter 22 descends. The male die 22A of the first cutter 22 lowers the male die 24A of the second cutter 24 while resisting the pressing force of the air cylinder 19 while holding the long material Y. Similarly, the female die 22B of the first cutter 22 also descends by its own weight, comes into contact with the long material X on the female die 24B of the second cutter 24, and stops (FIG. 8B). When the upper die set 29 is further lowered, the leading ends of the long material Y are cut into male and female wedges by the male and female dies 22A and 22B of the first cutter 22, and at the same time, the male and female dies 24A of the second cutter 24 are cut. , 24B, the rear end of the long material X is similarly cut into male and female wedges (FIG. 8C). Further, when the upper die set 29 descends, the long materials X and Y are transferred to the male and female dies 22A and 22B of the first cutter 22 and the male and female dies 24 of the second cutter 24.
A, 24B, the cut surfaces are fitted and connected as shown in FIG. At this time, the cut pieces X ′ and Y ′ of the long materials X and Y are formed into the grooves 39 of the upper and lower die sets 29 and 28,
Since it enters and escapes at 37, it does not hinder the fitting connection of the long materials X and Y (FIGS. 8 (D) and 9).

Thereafter, the piston of the air cylinder 19 retreats upward to release the action of urging the male die 24A of the second cutter 24 upward, and the piston of the hydraulic cylinder 5 also retreats upward, and the upper die The set 29 and the first cutter 22 are pulled up to return to the original position (top dead center). In this state, the first cutter 22 separates from the second cutter 24, and releases the fitted and connected long materials X and Y.
Here, the cut pieces X ′ and Y ′ of the long material are removed from the grooves 39 and 37 of the upper and lower die sets (FIG. 8).
(E)).

Next, as shown in FIG. 10, the air cylinder 46 as the pressing means draws the piston backward, and the rear finger 48 is retracted. After retreating, the finger 48
The air cylinder 46 is immediately stopped by the stopper 52, so that the air cylinder 46 slides on the guide rail 42 together with the alignment arm 43 and moves forward. Therefore, the front finger 44
Also moves forward with the aligning arm 43, separates from the long materials X and Y, and releases the same.

Next, the lower table 3 is retracted by the hydraulic cylinder provided in the machine base 2, and the first cutter 22, the second cutter 24, the clamp arms 16, 18 and the front and rear fingers 44, 48, etc. are all in the initial state. It returns to the state position (see FIG. 11). Therefore, in this state, the elongated materials X and Y fitted and connected to each other (the fitting and connecting portions thereof).
Reenters between the pair of upper and lower clamp arms 16 and 18 again.

Next, as shown in FIG. 12, the cylinder 20 connected to the clamp arm 18 located on the lower side is operated (the piston is raised), and the long materials X and Y fitted and connected are connected.
And hold it from above and below. Further, with the clamp arms 16 and 18 holding the long materials X and Y,
The welding machine 34 electrically welds the two long materials X and Y while moving over the fitting connection portion by the motor provided in the machine base 2.

When welding of the fitting connection portions of the two long materials X and Y is completed, as shown in FIG. 13, the welding machine 34 returns to the original position, and the cylinder 20 operates (the piston descends).
As a result, the holding by the clamp arms 16 and 18 is released,
The supply of the joined long materials X and Y to the press machine 40 is restarted.

Thereafter, if the remaining amount of the newly supplied long material Y becomes small again, the above-described procedure is repeated.

As described above, in the continuous material supply apparatus 10 and the continuous material supply method according to the present embodiment, the continuous material X supplied as in the related art is eliminated and another new continuous material Y is used. When a new long material Y is supplied to the press machine 40, a special operation of resetting the new long material Y to the press machine 40 or sending a predetermined amount of the tip portion to the press machine 40 is completely unnecessary. Thus, the long materials X and Y can be efficiently and continuously supplied to the press machine 40. Therefore, the press workability of the press machine 40 is improved, and the cost can be significantly reduced.

Further, in the continuous material supply device 10, the cutting operation of the first cutter 22 and the second cutter 24 by a single cutting operation is not limited to simply cutting the ends of both the long materials X and Y, and the two continuous materials are cut. The length materials X and Y can be fitted and connected at the same time as the cutting, so that the mechanism is simplified.

Further, in the continuous material supply device 10,
While the cutting and fitting portions of the two long materials X and Y cut and fitted by the first cutter 22 and the second cutter 24 are held at the cutting and fitting position, the fitting connection portion is connected to the welding machine 3.
4, the joining of the two long materials X and Y is further ensured, and the long materials X and Y can be reliably and continuously supplied to the press machine 40.

Further, in the continuous material supply device 10, when the leading end of the long material Y to be newly supplied is vertically overlapped with the rear terminal of the long material X already supplied, Since the widthwise edges of the two long materials X and Y are pressed by the alignment arm 43 and aligned with each other, the terminals of the two long materials X and Y can be joined with high accuracy and reliability.

Further, the continuous material supply device 10
Is integrally connected to a press machine 40 by a fixing stay 38, and the joining position of both long materials X and Y is
The pressing position of the long materials X and Y by the press machine 40 is set as a reference. Therefore, both long materials X,
The cut-fitting position (joining position) of Y does not become a press-formed part by the press machine 40, so that the two long materials X and Y can be used most effectively. Further, by setting (adjusting) the length of the fixed stay 38 to a predetermined amount as appropriate, the cutting fitting of the two long materials X and Y can be performed irrespective of the press forming position (the size of the pressed product) by the press machine 40. The position (joining position) can be set so as not to be a press-formed portion by the press machine 40.

In the above-described embodiment, the first and second cutters 24 and 24 connect the fitting connection portions of the two long materials X and Y whose terminals are fitted and connected to each other by the welding machine 34. However, the present invention is not limited to this, and the welding process by the welding machine 34 may be omitted, and the two long materials X and Y may be joined simply by fitting. That is, if the thickness of both long materials X and Y is, for example, 0.5 mm or more, the welding machine 3
4 can be omitted and welding can be performed only by fitting the two long materials X and Y together. Therefore, in this case, since the welding machine 34 and the welding process are omitted, the manufacturing cost can be further reduced, and the processing time for joining can be reduced.

[0076]

As described above, the continuous material supply method and the continuous material supply device for a press machine according to the present invention can efficiently and continuously supply the long material to the press machine. There is an excellent effect that the press workability of the press machine is improved and the cost can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire configuration of a continuous material continuous supply apparatus for a press machine according to an embodiment of the present invention.

FIG. 2 is a front view of a continuous material supply device for a press machine according to an embodiment of the present invention.

FIG. 3 is a side view of a continuous material supply device for a press machine according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a configuration of a main part of a continuous material long supply device for a press machine according to an embodiment of the present invention.

FIGS. 5A and 5B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, wherein FIG. 5A is a side view and FIG. 5B is a front view.

6A and 6B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, in which FIG. 6A is a side view and FIG. 6B is a front view.

FIGS. 7A and 7B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, in which FIG. 7A is a side view and FIG. 7B is a front view.

FIG. 8 is a schematic diagram showing an operation state of the continuous material supply device for a press machine according to the embodiment of the present invention, and showing a process of fitting and connecting with a first cutter and a second cutter. .

9A and 9B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, wherein FIG. 9A is a side view and FIG. 9B is a front view.

FIGS. 10A and 10B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, in which FIG. 10A is a side view and FIG. 10B is a front view.

11A and 11B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, wherein FIG. 11A is a side view and FIG. 11B is a front view.

FIGS. 12A and 12B show an operating state of the continuous material supply device for a press machine according to the embodiment of the present invention, wherein FIG. 12A is a side view and FIG. 12B is a front view.

FIGS. 13A and 13B show an operation state of the continuous material supply apparatus for a press machine according to the embodiment of the present invention, wherein FIG. 13A is a side view and FIG. 13B is a front view.

FIG. 14 is a plan view showing shapes of cut surfaces of a first cutter and a second cutter of the continuous material long supply device for a press machine according to the embodiment of the present invention.

FIG. 15 is a plan view showing details of a joining portion of the long material joined by the continuous material feeding apparatus for a press machine according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 continuous material supply device 16 clamp arm 18 clamp arm 22 first cutter (cutting and fitting means) 22A male die 22B female die 24 second cutter (cutting and fitting means) 24A male die 24B female die 26 cut surface 34 Welding machine (welding means) 36 Rear end detection sensor 38 Fixed stay (press machine connecting means) 40 Press machine 43 Alignment arm (pressing means) 44 Front finger 48 Rear finger R Transport supply path S Temporary holding position X Long material Y long material

Claims (8)

[Claims] 1. A continuous material supply method for a press machine for continuously supplying a long material to a press machine, comprising: a rear end of the long material already supplied to the press machine; A joining position for joining a new end of a long material to be supplied to the press machine following the length material is set on a supply movement trajectory of the long material already supplied to the press machine. In the vicinity of the joining position, the leading end of the new elongate material is temporarily held, and when the rear end of the elongate material already supplied to the press machine reaches a predetermined position, the elongate material becomes longer. The supply of the material to the press machine is temporarily stopped, and then the front end of the temporarily held new long material is
The longitudinal ends of the long material on the joining position are vertically overlapped with each other, and the ends of the superposed long materials at the joining position are simultaneously cut into male and female wedges which fit into each other, and At the same time, the terminals are fitted and connected to each other, and thereafter, the supply of the fitted and connected two long materials to the press machine is restarted. 2. The fitting connection portion is welded while holding the two long materials on the joining position joined and connected at the joining position, and after the welding, the two long materials are joined together. The continuous material supply method for a press machine according to claim 1, wherein the supply to the press machine is restarted. 3. The joining position of the two long materials is set to the pressing position of the long material by the press machine so that the joining position of the two long materials is an unnecessary portion other than the press-formed portion by the press machine. The continuous material supply method for a press machine according to claim 1 or 2, wherein the method is set on the basis of: 4. A continuous material supply apparatus for a press machine for continuously supplying a long material to a press machine, wherein a front end of the long material for newly supplying the press machine is temporarily held. Then, the long end of the long material already supplied to the press machine is vertically overlapped with the rear end, and in the overlapped state, the ends of the two long materials are each formed into a male and female wedge shape which fits each other. A continuous material feeding device for a press machine, comprising cutting fitting means for cutting at the same time and simultaneously fitting and connecting the terminals at the cutting position. 5. The cutting and fitting means includes a first cutter for temporarily holding the leading end of the new long material and cutting the new material at the cutting and fitting position, and a cutter already supplied to the press machine. A second cutter for cutting the rear end of the long material at the cutting engagement position, wherein the first cutter and the second cutter respectively fit the ends of the two long materials to each other. Having a cutting surface for cutting into a male and female wedge shape to be engaged with each other, wherein the first cutter and the second cutter simultaneously perform a cutting operation in the vertical direction to fit and connect the ends of the two long materials to each other; The continuous material feeding apparatus for a press machine according to claim 4, characterized in that: 6. A welding means for welding the fitting connection portion while holding the two long materials fitted and connected by the cutting and fitting means at the cutting and fitting position. A continuous material supply device for a press machine according to claim 4 or claim 5. 7. When the front end of the long material to be newly supplied and the rear end of the long material already supplied to the press machine are overlapped in the up-down direction, The continuous material supply device for a press machine according to any one of claims 4 to 6, further comprising a pressing unit that presses the edges in the width direction to align them with each other. 8. The joining position of the two long materials is set on the basis of the pressing position by the press machine so that the joining position of the two long materials becomes an unnecessary portion other than the press-formed portion by the press machine. The long material continuous supply device for a press machine according to any one of claims 4 to 7, further comprising a press machine connecting means.