JP5930721B2 - Blanking method and apparatus - Google Patents

Description

  The present invention relates to a blanking method and apparatus. More specifically, the present invention relates to a blanking processing method and apparatus for smoothly feeding a workpiece to a blanking die and carrying out a cut blank.

  Conventionally, a blanking process for cutting a blank while sequentially feeding a long workpiece is known (see, for example, Patent Document 1).

JP-A-3-248722

  In the conventional blanking process, the workpiece is usually fed to and unloaded from the blanking die by a feeder arranged in front of or behind the blanking die. In this case, it is carried out from the blanking mold in a state where the front and rear blanks are connected and separated after being carried out.

When separating the blank before unloading, it is necessary to send the unloaded blank and the workpiece to be fed separately. For this reason, if the feeding timings of both are shifted, the blank and the workpiece interfere with each other, and the workpiece is scratched or deformed.
When the workpiece is fed after waiting for the blank to be carried out, the cycle time becomes long.

  This invention is made | formed in view of the above-mentioned subject, and provides the blanking processing method and apparatus which can perform efficiently carrying out of the cut-out blank and feeding of the workpiece | work after cutting. With the goal.

  The blanking method of the present invention is a blanking method for cutting a blank (for example, a blank 3 described later) while sequentially feeding a long workpiece (for example, a workpiece 1 described later), and the workpiece is cut by a cutting device. (For example, a feeding step A described later) for feeding toward a cutting position (for example, a cutting apparatus 30 described later), and a cutting step for cutting a blank having a predetermined shape from the workpiece at the cutting position (for example, , A cutting step B) described later, and a supporting step (for example, a supporting step C described later) for supporting one of the cut blank and the workpiece after cutting the blank at different heights. An unloading step (for example, unloading step D described later) for unloading the blank to the outside of the cutting device, After flop, performing said feeding step and the unloading step simultaneously.

  According to the present invention, the support step supports the blank so that the height of the blank cut out from the workpiece in the cutting step and the height of the workpiece after cutting the blank are different. Therefore, even if it carries out simultaneously the carrying out step which carries a blank out of a cutting device, and the feeding step which feeds the workpiece | work which cut out the blank, there is no possibility that a blank and a workpiece | work may interfere. Thereby, the workpiece feeding timing can be set in accordance with the blank carry-out timing. Accordingly, it is possible to efficiently carry out blanks and feed workpieces, and to realize blanking with a short cycle time.

  A blanking apparatus (for example, blanking apparatus 10 described later) of the present invention is a blanking apparatus that cuts out a blank while sequentially feeding a long workpiece, and is a feeding device that feeds the workpiece ( For example, a feeding device 20), which will be described later, a cutting device that cuts a blank of a predetermined shape from the workpiece that has been fed by the feeding device, the blank that has been cut by the cutting device, and the blank that has been cut A support device (for example, support device 40 described later) that supports any one of the workpieces at different heights with respect to the other, and a carry-out device (for example, described later) that carries out the cut out blank to the outside of the cutting device. An unloading device 50), and after the operation of the support device, feeding of the workpiece by the feeding device and the blank by the unloading device It does carry-out at the same time.

  According to this invention, the support device supports the height of the blank cut out from the workpiece by the cutting device and the height of the workpiece after cutting out the blank. Therefore, even if carrying out the blank by the carry-out device and feeding the workpiece by the feeding device at the same time, there is no possibility that the blank and the workpiece interfere. Thereby, the workpiece feeding timing can be set in accordance with the blank carry-out timing. Accordingly, it is possible to efficiently carry out blanks and feed workpieces, and to realize blanking with a short cycle time.

  According to this invention, it supports so that the height of the blank cut out from the workpiece | work and the height of the workpiece | work after cutting out a blank may become different height. For this reason, even if the carrying out of the blank and the feeding of the workpiece are performed simultaneously, there is no possibility that the blank and the workpiece interfere. Thereby, the workpiece feeding timing can be set in accordance with the blank carry-out timing. Accordingly, it is possible to efficiently carry out blanks and feed workpieces, and to realize blanking with a short cycle time.

It is a schematic plan view which shows one Embodiment of the blanking apparatus of this invention. It is a schematic front view corresponding to (c) of the blanking apparatus of FIG. It is a schematic front view corresponding to (d) of the blanking apparatus of FIG. It is a schematic front view corresponding to (e) of the blanking apparatus of FIG. It is a schematic side view of the blanking apparatus of FIG. It is a schematic sectional drawing of a lifter.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic plan view showing an embodiment of the blanking apparatus of the present invention. 2 to 4 are schematic front views respectively corresponding to (c), (d), and (e) of FIG. 1, and FIG. 2 illustrates a workpiece in upper and lower mold engagement regions described later. FIG. 5 is a schematic side view seen from the left.

The blanking apparatus 10 cuts out the blank 3 while sequentially feeding the long workpiece 1.
The blanking apparatus 10 includes a feeding device 20, a cutting device 30, a support device 40, a carry-out device 50, a scrap discharge device 60, and a synchronization device 70.

The feeding device 20 feeds the strip-shaped workpiece 1 unwound by a leveler (not shown) from the steel material roll 2 wound in a roll shape toward the cutting position of the cutting device 30.
In the present embodiment, the feeding device 20 is illustrated as a feeding roller 21 that feeds the workpiece 1 by sandwiching the workpiece 1 from the upper and lower surfaces and rotating around the axis.

The feed roller 21 is intermittently operated by a motor (not shown).
When feeding the workpiece 1, the feeding roller 21 is operated by a motor and rotates.
When the workpiece 1 is cut by the cutting device 30, the feeding roller 21 stops operating.

The cutting device 30 cuts out a blank 3 having a predetermined shape from the work 1 fed by the feeding device 20.
The cutting device 30 is a press machine provided with a blanking die. The lower die of the blanking die is attached to the bolster of the press machine. The upper die of the blanking die is attached to the slide of the press machine.
In the present embodiment, the cutting device 30 is illustrated as a lower frame 31 including a bolster and a lower mold, and a movable upper frame 32 including a slide and an upper mold. Although illustration of blanking dies (lower die and upper die) is omitted, a cut line 33 is shown in FIG. Guide posts 34 are provided at the four corners of the lower frame 31.

When the upper frame 32 is in the raised position spaced upward from the lower frame 31 (see FIGS. 3 and 4), the workpiece 1 can be fed through the gap between the lower frame 31 and the upper frame 32.
When the upper frame 32 is lowered to a predetermined lower limit height with respect to the lower frame 31 (see FIG. 2, the work 1 is illustrated in the mold engagement region between the lower frame 31 and the upper frame 32). The workpiece 1 is cut along the cut line 33 by the lower die of the frame 31 and the upper die of the upper frame 32, and the blank 3 is cut out from the workpiece 1. At this time, scrap 4 is also generated.
Immediately after cutting, the upper frame 32 rises again to the raised position.

The support device 40 supports one of the blank 3 cut out by the cutting device 30 and the workpiece 1 after cutting out the blank 3 at different heights with respect to the other.
Specifically, the blank 3 cut by the cutting device 30 is supported at the height when cut (that is, the upper surface of the lower frame 31).
The workpiece 1 after cutting out the blank 3 is lifted from the upper surface of the lower frame 31 by the support device 40.

In the present embodiment, the support device 40 is illustrated as a plurality of lifters 41 arranged in front of the cut line 33 in the cutting device 30.
As shown in FIGS. 3 and 4, the lifters 41 are arranged in a plurality of rows at predetermined intervals along the feeding direction of the workpiece 1.
As shown in FIG. 5, each row of the lifters 41 is arranged in a plurality at predetermined intervals along the width direction of the work 1.

  As shown in FIG. 6, in each lifter 41, a piston-like insertion member 43 is accommodated in a cylinder 42 that is buried downward from the upper surface of the lower frame 31 and has an upper end opened. The lower end of the length adjusting rod 44 is fixed to the upper surface of the insertion member 43 with a screw 45. At the upper end of the length adjusting rod 44, a free bear 46, on which a sphere can freely rotate, is screwed. Therefore, the insertion member 43, the length adjusting rod 44, and the free bear 46 are integrally formed.

  A spring 47 as a pressure source that acts on the lower surface of the insertion member 43 and biases the integral insertion member 43, the length adjustment rod 44, and the free bear 46 upward is accommodated in the cylinder 42 of each lifter 41. . A rising limit position of the insertion member 43 urged upward by the spring 47 is limited by a stopper 48.

The biasing force of the spring 47 is defined as follows.
When the free bear 46 supports the workpiece 1, the insertion member 43 is in the ascending limit position limited by the stopper 48 as shown in FIG.
That is, the urging force of the spring 47 is sufficient to support at least the weight of the work 1 received by each lifter 41 from the work 1.
When receiving the downward pressing force of the upper frame 32 from above the workpiece 1, the insertion member 43 compresses the spring 47 downward while the lower surface of the workpiece 1 is below the lower frame 31 as shown in FIG. The lower mold is brought into contact with the lower mold and further lowered to a height at which the workpiece 1 is cut by the upper mold of the upper frame 32.

The length of the length adjusting rod 44 of each lifter 41 is selected according to the position of the lifter 41 as shown in FIG.
In the lifter 41 arranged near the center along the width direction of the work 1, the shortest length adjusting rod 44 is selected.
In the lifter 41 disposed there, the length adjusting rod 44 that gradually increases is selected as it approaches both sides along the width direction of the workpiece 1.
In the lifter 41 arranged on both sides, the longest length adjusting rod 44 is selected.

Thus, the height of each lifter 41 is arranged in a substantially U shape along the width direction of the workpiece 1. Thereby, a waist is given to the strip-shaped workpiece 1 to prevent the workpiece 1 from hanging down.
That is, as shown in FIG. 3, not only when the workpiece 1 is supported by the lifter 41, but also when the tip side of the workpiece 1 is not supported by the lifter 41 as shown in FIG. Prevent sagging.

The carry-out device 50 carries the blank 3 cut out from the workpiece 1 in the cutting device 30 out of the cutting device 30.
In the present embodiment, the unloading device 50 is illustrated as an unloading roller 51 that unloads the blank 3 by sandwiching the blank 3 from the upper and lower surfaces and rotating around the axis.

The carry-out roller 51 is intermittently operated by a motor (not shown).
When carrying out the blank 3, the carry-out roller 51 is operated by a motor and rotates.
When the blank 3 is cut out by the cutting device 30, the carry-out roller 51 stops operating.

When the blank 3 is cut out from the workpiece 1 in the cutting device 30, the scrap discharge device 60 discharges the scrap 4 excluded from the blank 3 and the workpiece 1 to the outside of the cutting device 30.
The scrap 4 is formed on both sides as viewed from the width direction of the workpiece 1.
In the present embodiment, the scrap discharging device 60 is illustrated as a scrap kicker 61 that pushes the scrap 4 upward from its lower side and brings it to a predetermined height.

As shown in FIG. 5, the scrap kicker 61 has an inclined surface 62 that forms a downward slope from the inside toward the outside as viewed from the width direction of the workpiece 1 in the cutting device 30.
The scrap kicker 61 includes an operating member 63 that has an inclined surface 62 at the upper end and pushes up the inclined surface 62.
The actuating member 63 switches and operates the inclined surface 62 between a push-up position indicated by a solid line in FIG. 5 and a storage position indicated by a two-dot chain line.
When the scrap kicker 61 is in the push-up position, the height of the inclined surface 62 is positioned below the height of the workpiece 1 supported by each lifter 41.

When the operating member 63 pushes up the inclined surface 62, the scraper kicker 61 pushes up the scrap 4 and brings it to a predetermined height.
At this time, since the inclined surface 62 has a downward gradient from the inner side to the outer side when viewed from the width direction of the workpiece 1, the scrap 4 pushed up by the inclined surface 62 is forced to slide down along the inclined surface 62. Works.
Therefore, the scrap 4 pushed up by the inclined surface 62 slides outward along the inclined surface 62.

When the upper frame 32 lowers and the workpiece 1 is lifted again immediately after the upper frame 32 is lowered, the synchronizer 70 moves the lifter 41 up to a predetermined height as the lifter 41 is lifted. Operate simultaneously. Specifically, the motor of the feeding roller 21 and the motor of the carry-out roller 51 are operated simultaneously.
Thereby, the unloading of the blank 3 by the unloading roller 51 and the feeding of the workpiece 1 by the feeding roller 21 are performed simultaneously.

Next, the operation of the blanking apparatus 10 configured as described above will be described together with the steps in the blanking method of the present invention.
First, the feeding roller 21 of the feeding device 20 feeds the strip-shaped workpiece 1 toward the cutting position of the cutting device 30 (feeding step A, see FIG. 1A).

At this time, each lifter 41 is in a predetermined raised position. The scrap kicker 61 is in a predetermined storage position.
Therefore, the workpiece 1 is supported in a substantially U shape by each lifter 41 in a predetermined ascending position, and is fed to the cutting position while being prevented from drooping (feeding step A, FIG. 1 (b), (See FIG. 5).

  Next, the upper frame 32 of the cutting device 30 descends to a predetermined lower limit height with respect to the lower frame 31, and the workpiece 1 is cut into the cut line 33 by the lower mold of the lower frame 31 and the upper mold of the upper frame 32. The blank 3 having a predetermined shape is cut out from the workpiece 1 (see cutting step B, FIG. 1 (c), FIG. 2).

At this time, each lifter 41 is lowered to a predetermined lowered position by the spring 47 being compressed by the downward pressing force of the upper frame 32. The scrap kicker 61 is in a predetermined storage position.
Therefore, the workpiece 1 is cut in the same manner as in the case of cutting in a normal cutting device that does not include the lifters 41 and the scrap kicker 61, and the blank 3 is cut out.

Next, one of the cut blank 3 and the workpiece 1 after cutting the blank 3 is supported at different heights relative to the other (see support step C, FIG. 1 (d), FIG. 3, and FIG. 5). .
That is, the lifter 41 of the support device 40 is lifted and returned to a predetermined height by the urging force of the spring 47 by releasing the downward pressing force due to the re-raising of the upper frame 32.
Thereby, the workpiece | work 1 after cutting out the blank 3 raises to the predetermined | prescribed height supported by each lifter 41. FIG.

At this time, the cut out blank 3 is held at the cut height on the upper surface of the lower mold of the lower frame 31.
The scrap kicker 61 pushes the inclined surface 62 upward. As a result, the scrap 4 is pushed upward by the inclined surface 62 of the scrap kicker 61 and discharged to the outside of the cutting device 30 along the inclined surface 62.

That is, the work 1 supported by each lifter 41, the scrap 4 pushed up by the scrap kicker 61, and the blank 3 that does nothing are separated separately, triggered by the release of the downward pressure due to the re-raising of the upper frame 32. Is done.
In FIG. 1D, at this time, the blank 3 is illustrated with a slight movement in the carry-out direction. In order to easily separate the workpiece 1 and the scrap 4, it is possible to move the blank 3 slightly in the unloading direction. Of course, this movement may be omitted. Also when moving, it is for separation of the blank 3 and not for carrying out. Therefore, the blank 3 is not carried out at this time.

Next, the blank 3 is carried out of the cutting device 30 (see carrying out step D, FIG. 1 (e), FIG. 4).
That is, the carry-out roller 51 of the carry-out device 50 carries the blank 3 out of the cutting device 30.
The unloading of the blank 3 by the unloading roller 51 and the feeding of the workpiece 1 by the feeding roller 21 are performed simultaneously.

At this time, the feeding height of the work 1 by the feeding roller 21 is increased to a predetermined height supported by each lifter 41.
On the other hand, the carry-out height of the blank 3 by the carry-out roller 51 remains the height cut at the upper surface of the lower mold of the lower frame 31.
For this reason, the feeding height of the workpiece 1 by the feeding roller 21 is at a position spaced above the carry-out height of the blank 3 by the carry-out roller 51.
Thereby, for example, even when the blank 3 carried out by the carry-out roller 51 remains on the cutting device 30 and the workpiece 1 fed by the feeding roller 21 catches up with the blank 3 and passes, the workpiece 1 and the blank 3 No interference occurs.

The height of the inclined surface 62 pushed up by the scrap kicker 61 is lower than the feeding height of the workpiece 1 supported by each lifter 41.
Therefore, the height of the inclined surface 62 of the scrap kicker 61 and the scrap 4 that slides down on the inclined surface 62 is at a position spaced below the feeding height of the workpiece 1 by the feeding roller 21.
Thereby, for example, even when the scraping kicker 61 remains at the position where the feeding roller 21 feeds the workpiece 1, the interference between the workpiece 1 and the scrap kicker 61 or the scrap 4 does not occur.

According to this embodiment, there are the following effects.
The support device 40 holds the workpiece 1 at a predetermined height so that the height of the blank 3 (cutting step B) cut out from the workpiece 1 by the cutting device 30 is different from the height of the workpiece 1 after cutting out the blank 3. (Support step C).
Therefore, even if unloading of the blank 3 by the unloading device 50 (unloading step D) and feeding of the workpiece 1 by the feeding device 20 (feeding step A) are performed simultaneously, the blank 3 and the workpiece 1 may interfere with each other. There is no.
Thereby, the feed timing of the workpiece 1 can be set in accordance with the carry-out timing of the blank 3.
Accordingly, it is possible to efficiently carry out the blank 3 and feed the workpiece 1 and to realize blanking processing with a short cycle time.

In the above embodiment, the support device 40 is configured so that the height of the workpiece 1 is different from the height of the blank 3 by lifting the workpiece 1 after cutting out the blank 3 upward with respect to the blank 3. However, the present invention is not limited to this.
For example, you may comprise so that the height of the workpiece | work 1 and the height of the blank 3 may differ by the support apparatus 40 raising or lowering the cut-out blank 3 with respect to the workpiece | work 1. FIG.

DESCRIPTION OF SYMBOLS 1 ... Work 3 ... Blank 10 ... Blanking processing device 20 ... Feeding device 30 ... Cutting device 40 ... Supporting device 50 ... Unloading device

Claims (4)

A blanking method that cuts out blanks while feeding long workpieces sequentially,
A feeding step of feeding the workpiece toward a cutting position of a cutting device;
A cutting step of cutting a blank of a predetermined shape from the workpiece at the cutting position;
Against excised the blank, a supporting step of supporting is raised the workpiece after cutting out the blank to a higher level,
Carrying out the blank out of the cutting device; and
A blanking method, wherein the feeding step and the unloading step are performed simultaneously after the supporting step. The blanking method according to claim 1, wherein, in the supporting step, the workpiece is supported in a substantially U shape in the width direction. A blanking device that cuts out blanks while feeding long workpieces sequentially,
A feeding device for feeding the workpiece;
A cutting device for cutting out a blank of a predetermined shape from the workpiece fed by the feeding device;
To the blank cut out by the cutting device, a supporting device for supporting is raised the workpiece after cutting out the blank to a higher level,
A carry-out device for carrying out the cut out blank to the outside of the cutting device,
A blanking apparatus that simultaneously feeds the workpiece by the feeding device and unloads the blank by the unloading device after the support device is actuated. The blanking apparatus according to claim 3, wherein the workpiece is supported in a substantially U shape in the width direction.

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