DE202018101531U1 - Punch for machining two flat bars, which are connected point-like at one end - Google Patents

Abstract

Punch for the processing of two flat bars (1, 2) which are connected point-like at one end such that the flat bars (1, 2) lie directly on each other with their respective wider surfaces, wherein the punch a Ablängstanzstempel (4) for at least one the two flat bars (2), wherein the first (1) of the two interconnected flat bars (1, 2) in a processing position in the punch on a support element (7) can be placed, through which the first flat bar (1) on the side surface is supported supporting, which lies opposite the side surface on which the second flat bar (2) rests, characterized in that the second (2) of the two flat bars (1, 2) is assigned a Ablängstanzstempel (4) that in this processing position of the second flat bar (2) rests directly on the first flat bar (1) between the first flat bar (1) and the second flat bar stamp (4) assigned to this second flat bar, that the Working stroke of the second cutting punch (4) relative to the second flat bar (2) is limited in the machining position such that the movement in an end stop (302, 303; 7) is stopped before the cutting edge (301) of this second cutting punch (4) reaches the plane in which the side of the second flat bar (2) resting on the first flat bar (1) is located.

Description

The present invention relates to a punch for the processing of two flat bars, which are connected point-like with each other at one end according to the preamble of claim 1.

Such flat bars are known as fittings, which are needed for the realization of the rotary tilt function in windows. In this context, one of the two bars is referred to as a "cuff bar". In the following, this "cuff bar" conceptually corresponds to the "first flat bar". In the described application, the other of the two flat bars is referred to as a "driving rod". Subsequently, this "drive rod" corresponds to the second flat bar.

In the window fittings there is a requirement that these two interconnected flat bars are shortened to different lengths. In this case, the drive rod to the cuff bar is to be shortened more. In addition, depending on the manufacturer of the window fittings, there is the additional requirement that a hole be punched in the cuff bar or that the cuff bar be stamped.

It is known in this context to spread the cuff bar and the drive rod, in which it is pushed over a die, which is then located between the cuff bar and the drive rod. In known punches ( DE 296 15 383 U1 . DE 102 00 137 A1 . DE 20 2007 002 727 U1 ), the intermediate die on the counter cutting edges for the punching of the cuff rod. In the direction of movement of the punch during the working stroke is located below the intermediate die still a counter-die, which has the counter cutting edge for the punching of the drive rod.

It is also known to make the cut to length of the two interconnected flat bars, without spreading them by the cut to a shorter length flat bar is cut with a Ablängstanzstempel whose direction of movement during the stroke is in the plane of the flat bar to be cut off, this direction of movement by 90 Degree is offset to the longitudinal axis of this flat bar. Such an embodiment is described, for example in the DE 102014 104 146 A1 ,

In addition, punches are known in which two flat bars arranged one above the other can be shortened to the same length with a punching punch. For this purpose, the two flat bars are placed on a die with a counter-cutting edge for the Ablängstanzstempel. During the working stroke of the long-punching punch, the continuous punch pierces the two flat bars one after the other during the working stroke. As a result, these flat bars are cut and cut to length.

The present invention has for its object to propose a punch, with which the staggered section of the flat bar of the two interconnected flat bars can be performed, which is to be cut to a shorter length.

This object is achieved according to the present invention according to claim 1 by a punch for the processing of two flat bars, which are connected point-like with each other at one end such that the flat bars lie with their respective wider surfaces directly to each other. The punch has a longitudinal punch for at least one of the two flat bars. The first of the two interconnected flat bars is placed in a processing position in the punch on a support member by which the first flat bar is supported supporting on the side surface, which is opposite to the side surface on which the second flat bar rests. According to the present invention, the second of the two flat bars is assigned a longitudinal punch. In this processing position, the second flat bar lies directly on the first flat bar between the first flat bar and the second flat punch bar assigned to this second flat bar. The working stroke of the second elongate punch relative to the second flat bar in the processing position is limited such that the movement in an end stop is stopped before the cutting edge of this second elongated punch reaches the plane in which the side of the second flat bar is located on the first Flat bar rests.

It proves to be advantageous that the cutting of the flat bar already takes place before the Ablängstanzstempel has completely penetrated the flat bar.

It has been shown that the flat bar is already severed when the cutting punch has already penetrated the flat bar to about 2/3 of its thickness. This can be explained in such a way that the flat bar is severed in its longitudinal direction upon penetration of the longitudinal punching punch on the one hand depending on the penetration depth of the cutting punch and on the other hand in this section is spread in the longitudinal direction by the penetrating Ablängstanzstempel. If the end punch has already partially penetrated the flat bar, the flat bar will break off in the cutting plane in the part that has not yet penetrated the end punch. This flies Waste piece of the flat bar away from the cutting plane in the longitudinal direction of the flat bar.

These conditions apply at least to the flat bars, which are used as fittings in the window. These flat bars have a thickness of less than 1 cm and a width of a few cm. The lengthening is done by cutting the longitudinal punch in the direction of the flat bar. Which corresponds to the thickness of less than 1 cm.

In this embodiment of the punch, it proves to be advantageous that the abflängende second flat bar (drive rod) is supported during the punching cut by this rests on the first flat bar (cuff bar). This first flat bar is in turn supportingly stored in this punching cut by this first flat bar rests on the support element and is supported by this supporting.

As a result, the second flat bar is supported during the punching cut.

Advantageously ends in the punch according to the present invention, the working stroke of the second Abfängstanzstempels before the cutting edge touches the first flat bar.

It has proven to be advantageous if the distance between the cutting edge of the second cutting punch and the first flat bar in this position of the end stop is less than 1 mm. In a further advantageous embodiment, this distance is less than 0.5 mm and in a further advantageous embodiment, this distance is 0.1 mm. This can be achieved that the second flat bar is severed safely and that the first flat bar is largely not damaged.

This advantageously makes it possible to cut the second flat bar without having to make a spread of the two interconnected flat bars for the punching cut. This spread is particularly disadvantageous when the two flat bars must be shortened to a short length to the connection point. The spread then becomes so strong that the execution of the punching cut becomes problematic. In addition, there may be permanent deformation of the two flat bars by the spread in the punching cut.

Since the cutting edge of the second cutting punch does not touch the first flat bar, this first flat bar is not damaged by this end punch.

The execution of the punching cut in the direction of the thickness of the flat bar, which is less than the width of the flat bar also proves to be advantageous during the punching process.

There is still a first cut-to-length stamp for the first flat bar. This may be part of the punch, as discussed in the further embodiments below. However, it is in principle also possible to remove the two flat bars after this first processing step from the punch and relocate in another punch in which the processing of the first flat bar.

In the embodiment according to claim 1, it does not matter whether the Ablängstanzstempel is moved to the second flat bar and the support element is stationary supported in the punch or whether the Ablängstanzstempel is fixedly mounted in the punch and the support element with the two flat bars resting thereon the second end punch is moved to.

In the embodiment of the punch according to claim 2, the punch on a common drive element for the second Ablängstanzstempel and a first flat bar associated with the cutting tool. The second Ablängstanzstempel is resiliently mounted relative to the drive element such that the spring travel is greater than or equal to the way that the cutting tool still covers its working stroke when the second Ablängstanzstempel has reached the end stop. The punch is further designed such that the punching cut of the second cutting punch is performed in a first processing step before the punching cut of the first cutting punch. At least in this first processing step, the support element is supported. The second Ablängstanzstempel is to be moved during the working stroke on the second flat bar such that the direction of movement of this second Ablängstanzstempels runs in the horizontal direction. The punch is further designed such that for the waste piece of the second flat bar, an at least downwardly open waste channel is present. The cutting tool associated with the first flat bar is movable in the horizontal direction and parallel to the second longitudinal punch. The speed of movement of the cutting tool during the working stroke and the distance in the direction of movement of the cutting tool between the position in which the cutting tool is in the moment in which the second longitudinal punch reaches this end stop and the position in which the cutting tool has reached a distance to the support element , on which rests the first flat bar, which is less than the sum of the thickness of the first flat bar and the second flat bar in the direction of the working stroke of the cutting tool are dimensioned such that after the first processing step, the waste piece of second flat bar has fallen out of the area and / or led out, in which the cutting tool runs along its working stroke before the cutting tool has reached a distance to the support element on which the first flat bar rests, which is less than the sum of the thickness of the first Flat bar and the second flat bar in the direction of the working stroke of the cutting tool.

In this embodiment according to claim 2, it proves to be advantageous that the movements of the punch can be realized with a drive element. This common drive element drives both the second longitudinal punch and also a cutting tool associated with the first flat bar.

This cutting tool itself can again be a longitudinal punch. This embodiment will be explained in more detail in connection with the claims 3 and 4.

This cutting tool can also be designed as a die with counter cutting edges for the fixed mounted punching punch and possibly also punch and / or punch. This embodiment is explained in more detail in the claims 5 and 6. In this embodiment, the cuff rod is pushed by the cutting tool in the direction of the permanently mounted punch. The embodiments according to claims 3 and 4 on the one hand and according to claims 5 and 6 on the other hand differ in the direction in which the punches penetrate into the first flat bar (cuff bar).

This cutting tool can also be designed as a die, which is brought to the first flat bar such that this die after falling out of the waste piece of the second flat bar from the punch the first flat bar is supported in a punching operation by means of at least one Ablängstanzstempels, located on the side of the first flat bar is located, which is opposite to the side of the first flat bar on which rests the second flat bar. This Ablängstanzstempel thereby has a working direction which is opposite to the working direction of the Ablängstanzstempels, which is associated with the second flat bar. Again, if necessary, at least one punch and / or punch can be present again, which then has the same direction of movement during the working stroke as the longitudinal punch, which is assigned to the first flat bar. This is explained in more detail in claims 7 and 8.

The second Ablängstanzstempel is resiliently mounted relative to the drive element such that the spring travel is greater than or equal to the way that the cutting tool still covers its working stroke when the second Ablängstanzstempel has reached the end stop. The resilient mounting of the second Abfängstanzstempels must wear the punching force in the basic position for performing the punching cut of the second flat bar. This is approximately 18 kN for the windows mentioned above. The elastic bearing can be realized by gas pressure springs. The advantage here is the comparatively constant residual spring force over the stroke, which only increases by a factor of 1.2. In terms of cost, it may also be useful to use system springs with a "spring-in-spring" system. In this embodiment, however, the spring force increases linearly with the stroke. A typical spring rate is 1700 N / mm

This resilient mounting ensures that the drive element can continue to move and the second Ablängstanzstempel remains in the position of its end stop. The further movement of the drive element is received in the second Ablängstanzstempel by the resilient mounting.

The cutting tool is thus further moved by the second Ablängstanzstempel after reaching the end stop.

The punching cut of the second cutting punch is carried out in a first processing step before the punching cut of the first cutting punch. At least in this first processing step, the support element is supported.

As a result of this support of the support element, at least during the first processing step, the second flat bar is supported via the first flat bar resting on the support element, so that the punched section of the second flat bar can take place.

It is also useful to design a punch according to claim 2 only with the features listed up to here.

Advantageously, the further features of the horizontal orientation of the direction of movement of the second continuous punch and the possible design of the waste channel are added.

This also applies to the features that affect the movement of the cutting tool.

The second Ablängstanzstempel is to be moved during the working stroke on the second flat bar such that the direction of movement of this second Ablängstanzstempels runs in the horizontal direction. The punch is further designed such that for the waste piece of the second flat bar is an at least downwardly open waste channel is present.

By this combination of the horizontal direction of movement of the second Ablängstanzstempels with the at least downwardly open waste channel is achieved that the waste piece of the second flat bar can fall out of the punch after the punching operation down. The waste piece can fall freely or, if necessary, can also be pushed out of the punch by a push element after the punching process.

The cutting tool associated with the first flat bar is movable in the horizontal direction and parallel to the second longitudinal punch. The speed of movement of the cutting tool during the working stroke and the distance in the direction of movement of the cutting tool between the position in which the cutting tool is in the moment in which the second longitudinal punch reaches this end stop and the position in which the cutting tool has reached a distance to the support element , on which rests the first flat bar, which is less than the sum of the thickness of the first flat bar and the second flat bar in the direction of the working stroke of the cutting tool are dimensioned such that after the first processing step, the waste piece of the second flat bar fell out of the area and / or led out (pushed out), in which the cutting tool runs along its working stroke, before the cutting tool has reached a distance to the support element, on which rests the first flat bar, which is less than the sum of the thickness of the first flat bar and the second flax tabes in the direction of the working stroke of the cutting tool.

By these measures it is achieved that the waste piece of the second flat bar has fallen out of the punch or at least as far removed that the cutting tool no longer impinges on this piece of waste in his further movement and possibly again pushes this piece of waste against the first flat bar.

In the embodiment according to claim 3, the cutting tool is a longitudinal punch. The support element is a die, which has a counter-cutting edge to the first Ablängstanzstempel, wherein the die remains supported even in the punching cut of the first Abfängstanzstempels.

In this embodiment, the support element is permanently supported in the punch. The working direction of the first elongated punch is such that it cuts the first flat bar from the direction in which the second flat bar rests on the first flat bar.

In the embodiment according to claim 4, in addition to the first elongated punch for processing the first flat bar still at least one punch and / or punch is provided with a direction of movement which is parallel to the direction of movement of the first elongated punch. The support element is designed for this at least one punch and / or punch as a die with a counter cutting edge for the punch and / or a recess for the countersink for this at least one punch and / or punch.

In this embodiment, one or more holes and / or one or more embossments are introduced into the cuff bar. The corresponding punches also act from the direction of the first flat bar, in which the second flat bar rests on the first flat bar.

In this case, both the first longitudinal punch and the possibly present punch and / or punch in the area on the first flat bar, which is insofar free of the second flat bar, as this area "behind" the punched section of the second flat bar. In the area where the punches act on the first flat bar, was previously still the waste piece of the second flat bar, which has already been cut at this moment and dropped out of the punch.

It has proven to be advantageous, during the processing of the first flat bar, first to carry out the hole punching or the stamping punching, and only thereafter the punching to cut the length of the first flat bar.

In the embodiment according to claim 5 resiliently mounted support elements are assigned to the support element, which support the support element in the first processing step. These support elements are moved by reaching the end stop by the second Ablängstanzstempel and / or by the further movement of the cutting tool after reaching the end stop by the second Ablststanzstempel in a position such that the support element is movable in the direction of movement of the cutting tool during the working stroke. The cutting tool is a die having a counter cutting edge for the first elongated punch. In a second processing step, the cutting tool is moved in the direction of the first cutting punch. The first continuous punch is fixed in place in the punch. The support element has a passage opening for the first elongated punch. To the second processing step, the support element is moved back into the supported position.

Due to the resilient mounting of the support elements, it is possible that they are located during the first processing step in a support position and support the support element in the first processing step. After this first processing step, these support elements can be brought into a release position such that the support element is movable in the direction corresponding to the direction of movement of the cutting tool.

It is possible that the resilient mounting is designed such that the support elements are automatically moved due to the spring force in the release position. In this embodiment, locking means may be provided by which the support members are held against the spring force in the support position. These locking means can be solved, for example, by the second Ablängstanzstempel triggers this locking means at the end of the first processing step upon reaching the end stop. The locking means can also be solved in the further course of movement through the cutting tool before it touches the first flat bar and / or the support element in the movement.

It is alternatively also possible that the resilient mounting is designed such that the support elements are automatically held in the support position due to the spring force. In this embodiment, the support elements are pressed upon reaching the end stop by the second Ablängstanzstempel and / or by the further movement of the Ablängwerkzeugs after reaching the end stop by the second Ablängstanzstempel against the spring force in the release position.

When the cutting tool reaches (touches) the first flat bar or support element, the support element and the first flat bar can be moved with the further movement of the cutting tool.

Thus, these support elements are moved by reaching the end stop by the second Ablängstanzstempel and / or by the further movement of the cutting tool after reaching the end stop by the second Ablststanzstempel in a position such that the support element is movable in the direction of movement of the cutting tool during the working stroke.

The cutting tool is a die having a counter cutting edge for the first elongated punch.

This allows the first flat bar to continue to move with this die. In this further movement of the first flat bar is pressed on the first Ablängstanzstempel.

In this second processing step, the cutting tool is moved in the direction of the first cutting punch. The first continuous punch is fixed in place in the punch. In this case, the support element on a passage opening for the first Ablängstanzstempel. Conceptually, by "passage opening" is meant that the opening is sufficiently large, so that the corresponding punch can be passed through this passage opening. The passage opening must have no punch guide relative to the punch. For a stabilization of the punch guide, however, it is possible that the passage opening has one or more leading edges for the punch during its movement.

As a result, the first longitudinal punch can act on the first flat bar.

After the second processing step, the support element is moved back into the supported position. As a result, the punch stands up again for the next processing operation for two interconnected flat bars.

In the embodiment according to claim 6, in addition to the first continuous punch for machining the first flat bar, at least one punching and / or embossing punch, which is likewise fixedly mounted in the punch, is also provided. The support element has also for this at least one punch and / or punch a passage opening. The cutting tool is also designed for this at least one punch and / or punch as a die with a counter cutting edge for the punch and / or a recess for the countersink for this at least one punch and / or punch.

In the embodiments according to claims 5 and 6, the punches from the side act on the first flat bar, which is opposite to the side on which the second flat bar rests on the first flat bar.

In the embodiment according to claims 5 and 6, the punch is indeed structurally complex than in the embodiments according to claims 3 and 4, however, results in the punching another hole pattern in the first flat bar.

It has proven to be advantageous in the processing of the first flat bar first perform the hole punching or stamping and only then the punching to the lengthening of the first flat bar.

In the embodiment of the punch according to claim 7, the cutting tool is a die having a counter cutting edge for the first elongated punch. In a second processing step, the cutting tool is moved in the direction of the first flat bar up to an end position for this cutting tool. In this end position, this cutting tool supports the resting on the support element first flat bar from the side of the first flat bar, which is opposite to the side with which the first flat bar rests on the support element. The first flat-ended punch assigned to the first flat bar has a movement direction during the working stroke, which is opposite to the direction of movement of the cutting tool during its working stroke. The movement sequence of the working stroke of the first cutting punch is timed so that the cutting edge of the first cutting punch does not impinge on the first flat rod until it is supported by the cutting tool. The support element has a passage opening for the first elongated punch.

This embodiment is structurally complex because the Ablängstanzstempel have different directions of movement during the working stroke. This situation is comparable to the construction of the DE 296 15 383 U1 However, in the embodiment according to the present invention, no Zwischenmatrize available. In the present invention, it is particularly advantageous that, due to the chronological sequence of the movement of the punch, the end punch for the first flat bar does not hit the first flat bar until it is already supported by the cutting tool.

In the embodiment according to claim 8, in addition to the first cutting punch for processing the first flat bar still at least one punch and / or punch is provided with a movement direction during the working stroke, which is oriented parallel offset to the direction of movement of the first cutting punch. The support element has also for this at least one punch and / or punch a passage opening. The cutting tool is also designed for this at least one punch and / or punch as a die with a counter cutting edge for the punch and / or a recess for the countersink for this at least one punch and / or punch.

Thus, a hole or an embossment can be punched from the side in the first flat bar, which is opposite to the side on which the second flat bar rests. In this case, the at least one punching and / or embossing punch advantageously also applies to the first flat bar only when it is already supported by the cutting tool.

It has proven to be advantageous, during the processing of the first flat bar, first to carry out the hole punching or the stamping punching, and only thereafter the punching to cut the length of the first flat bar.

Claim 9 relates to a development of the punch according to claim 1, wherein the second Ablängstanzstempel is fixedly mounted in the punch. The support element is drivable with the two flat bars resting thereon by means of a drive element to the second Ablängstanzstempel movable. The movement of the support element is stopped in the position of the end stop. By means of the drive element further at least a first Ablängstanzstempel for cutting to length of the first flat bar can be driven, having the same direction of movement as the support element, which is moved by means of the drive element to the second Ablängstanzstempel. The support member is resiliently mounted relative to the drive element such that the spring travel is greater than or equal to the way the first Ablängstanzstempel still covers its working stroke when the support element has reached the end stop with respect to the second Ablängstanzstempels. The direction of movement of the support element extends in the horizontal direction, wherein the punch is formed such that for the waste piece of the second flat bar, an at least downwardly open waste channel is present. The punch is furthermore designed in such a way that the punching cut of the second punching punch is executed in a first processing step before the punching cut of the first punch punch assigned to the first flat rod. After the first processing step, a die supporting the first flat bar is positioned on the side below the flat bar before the first flat punch has hit the first flat bar, on which the meanwhile cut waste piece of the second flat bar was previously located. This supporting die has a counter cutting edge for the first elongated punch. The support element has a passage opening for the first elongated punch.

Claim 9 thus relates to an embodiment of the punch according to claim 1, wherein not the second Ablängstanzstempel is moved to the second flat bar. Rather, the support element is moved with the resting thereon first flat bar and the second flat bar resting thereon by means of a drive element in the direction of the second Ablängstanzstempels. The second Ablängstanzstempel is fixedly mounted in the punch.

The movement of the support element is stopped in the position of the end stop. Thus, the effect described in connection with claim 1 is achieved, that the second flat bar is cut to length, without the first flat bar is damaged by the cutting edge of the second Abfängstanzstempels.

By means of the drive element further at least a first Ablängstanzstempel for cutting to length of the first flat bar can be driven, having the same direction of movement as the support element which is movable by means of the drive element to the second Ablängstanzstempel.

This results in an embodiment in which the movements required for carrying out the punchings run in one direction.

The support member is resiliently mounted relative to the drive element such that the spring travel is greater than or equal to the way the first Ablängstanzstempel still covers its working stroke when the support element has reached the end stop with respect to the second Ablängstanzstempels.

Also, a punch with the features described so far of claim 9 proves to be advantageous development of the punch according to claim 1.

The direction of movement of the support element extends in the horizontal direction, wherein the punch is formed such that for the waste piece of the second flat bar, an at least downwardly open waste channel is present.

As a result, the waste piece of the second flat bar can fall out of the punch after being cut to length.

The punch is furthermore designed in such a way that the punching cut of the second punching punch is executed in a first processing step before the punching cut of the first punch punch assigned to the first flat rod.

After the first processing step, a die supporting the first flat bar is positioned on the side below the flat bar before the first flat punch has hit the first flat bar, on which the meanwhile cut waste piece of the second flat bar was previously located.

This supporting die has a counter cutting edge for the first elongated punch.

The support element has a passage opening for the first elongated punch.

In this embodiment is advantageous, the movement speed of the first punching punch in the working stroke and the distance in the direction of movement of the first punching punch between the position in which the first Ablängstanzstempel is in the moment in which the support element with respect to the second Ablängstanzstempels reaches this end stop, and the position before the first longitudinal punch hits the first flat bar, dimensioned such that after the first processing step, the scrap piece of the second flat bar has fallen out of and / or out of the area in which the supporting die is positioned below the first flat bar.

In the embodiment according to claim 10, in addition to the first elongated punch for processing the first flat bar, at least one punch and / or punch is provided with a movement direction during the working stroke, which is oriented offset parallel to the direction of movement of the first elongated punch. The support element has also for this at least one punch and / or punch a passage opening. The supporting die is also designed for this at least one punch and / or punch as a die with a counter cutting edge for the punch and / or a recess for the countersink for this at least one punch and / or punch.

Thus, a hole or an embossment can be punched from the side in the first flat bar, which is opposite to the side on which the second flat bar rests. In this case, the at least one punching and / or embossing punch advantageously also applies to the first flat bar only when it is already supported by the supporting die.

It has proven to be advantageous, during the processing of the first flat bar, first to carry out the hole punching or the stamping punching, and only thereafter the punching to cut the length of the first flat bar.

• 1: eine Darstellung einer Stanze in einer Ausgangsstellung,
• 2: eine Darstellung der Stanze der 1 in einer anderen Perspektive,
• 3: eine Ausführungsform des zweiten Ablängstanzstempels,
• 4: eine Darstellung der Stanze in der Perspektive der 1 nach dem erfolgten ersten Bearbeitungsschritt,
• 5: eine Darstellung der Stanze in der Perspektive der 2 nach dem erfolgten ersten Bearbeitungsschritt,
• 6: eine Darstellung der Stanze in der Perspektive der 1 nach dem erfolgten ersten Bearbeitungsschritt, nachdem das Abfallstück des zweiten Flachstabes aus der Stanze herausgefallen ist,
• 7: eine Darstellung der Stanze in der Perspektive der 2 nach dem erfolgten ersten Bearbeitungsschritt, nachdem das Abfallstück des zweiten Flachstabes aus der Stanze herausgefallen ist,
• 8: eine Darstellung der Stanze in der Perspektive der 1 nach dem erfolgten Bearbeitungsschritt des ersten Flachstabes mit einem ersten Ablängstanzstempel sowie einem Lochstanzstempel,
• 9: eine Darstellung der Stanze in der Perspektive der 2 nach dem erfolgten Bearbeitungsschritt des ersten Flachstabes mit einem ersten Ablängstanzstempel sowie einem Lochstanzstempel,
• 10: eine Darstellung der geschnittenen Enden der beiden Flachstäbe,
• 11: eine weitere Ausgestaltung einer Stanze nach der vorliegenden Erfindung und
• 12 bis 16: ein weiteres Ausführungsbeispiel einer Stanze nach dem Funktionsprinzip der Stanze nach 11.

An embodiment of the invention is shown in the drawing. It shows:

• 1 : a representation of a punch in a starting position,
• 2 : a representation of the punch of the 1 in a different perspective,
• 3 an embodiment of the second longitudinal punch,
• 4 : a representation of the punch in the perspective of the 1 after the first processing step,
• 5 : a representation of the punch in the perspective of the 2 after the first processing step,
• 6 : a representation of the punch in the perspective of the 1 After the first processing step after the waste piece of the second flat bar has dropped out of the punch,
• 7 : a representation of the punch in the perspective of the 2 After the first processing step after the waste piece of the second flat bar has dropped out of the punch,
• 8th : a representation of the punch in the perspective of the 1 after the completed processing step of the first flat bar with a first elongated punch and a punch punch,
• 9 : a representation of the punch in the perspective of the 2 after the completed processing step of the first flat bar with a first elongated punch and a punch punch,
• 10 : a representation of the cut ends of the two flat bars,
• 11 a further embodiment of a punch according to the present invention and
• 12 to 16 : Another embodiment of a punch according to the principle of operation of the punch to 11 ,

1 shows a representation of a punch in a starting position. The punch is shown in a horizontal section through the plane of the insertion channel. In this insertion channel are the two flat bars 1 and 2 that lie on top of each other. The two flat bars 1 and 2 be in the presentation of 1 inserted from above into the drawing plane in the insertion channel. In principle, it would also be possible to use the two flat bars 1 and 2 in the drawing plane from below in the longitudinal direction to insert into the insertion channel.

The direction of movement of the second longitudinal punch 4 as well as the first cutting punch 5 as well as the punch 6 at the working stroke are by the arrow 3 shown.

Furthermore, the support element 7 to see on which the first flat bar 1 rests.

2 shows a representation of the punch of 1 in a different perspective. The punch is shown in perspective in a plan view of the open ends of the flat bars 1 and 2 in the insertion channel 201 ,

3 shows an embodiment of the second longitudinal punch 4 , This cutie dance stamp 4 has a cutting edge 301 on as well as two feet 302 and 303 , about which this cut-to-length dance stamp 4 has an end stop. The feet 302 and 303 stand at this end stop on the support element 7 on. As described above, in the position of this end stop, the cutting edge touches 301 the first flat bar 1 not yet.

As an alternative to this embodiment of the longitudinal punch 4 with the feet 302 and 303 who at this live dance stamp 4 are attached, it is also possible, the end stop for the punch 4 in the punch so that the feet 302 and 303 are mounted in the punch and that the oblong punch 4 in the punching operation on the feet 302 and 303 is moved and in an end stop supporting these feet 302 and 303 impinges before the cutting edge of the dance stamp 4 impinges on the cuff bar.

4 shows a representation of the punch in the perspective of 1 after the first processing step. The second cut-to-length stamp 4 is here in the position of the end stop. The second flat bar 2 is severed, the piece of waste has not fallen out of the punch yet.

With the second cut-to-length stamp 4 are also the first live dance stamp 5 as well as the punch 6 in the direction of the working stroke opposite the representation of the 1 further advanced.

5 shows a representation of the punch after 4 in the perspective of 2 after the first processing step.

In this illustration, it can be seen in particular that the second continuous punch 4 in its end stop on the support element 7 get up with both feet 302 and 303 ,

6 shows a representation of the punch in the perspective of 1 after the first processing step, after the waste piece of the second flat bar 2 has fallen out of the punch. Incidentally, this punch corresponds to the operating state after 4 ,

It can be seen that the waste channel is located behind the plane of the drawing, so that the waste piece of the second flat bar 2 falls out of the punch after the punching cut.

7 shows a representation of the punch after 6 in the perspective of 2 After the first processing step after the waste piece of the second flat bar has dropped out of the punch.

The waste channel is located in the drawing plane below the insertion channel 201 ,

8th shows a representation of the punch in the perspective of 1 after the completed processing step of the first flat bar with the first elongated punch 5 as well as a punch punch 6 ,

The waste piece of the first flat bar has not yet fallen out of the punch in this illustration.

The second cut-to-length stamp 4 is here compared to the representations of 4 and 6 not moved. This second cut-to-length stamp 4 stands over the two feet 302 and 303 on the support element 7auf. The further movement of the drive element is due to the resilient mounting of the second Abfängstanzstempels 4 added.

9 shows a representation of the punch after 8th in the perspective of 2 after the completed processing step of the first flat bar with a first longitudinal punch and a punch.

10 shows a representation of the cut ends 1001 and 1002 the two flat bars 1 and 2 , Besides, the hole is 1003 to see that through the punching punch 6 in the first flat bar 1 was introduced.

In the drawings, an embodiment is shown in which the cutting tool is a Ablängstanzstempel. The introductory part of the description explains the steps with which such a punch can be converted into a punch, in which the cutting tool is the counter-die to a longitudinal punch and furthermore possibly one or more punching and / or stamping dies. These punches are then mounted stationary in the punch on the side of one on the support element 7 resting first flat bar 1 , which faces away from the side of the first flat bar, on which the second flat bar 2 rests.

11 shows a schematic diagram of another embodiment of a punch according to the present invention. The drawing shows the punch again in a plan view from above in a lateral section through the punch.

It's the two flat bars again 1 and 2 to see. The first flat bar 1 lies on a support element 7 on.

It's a second cut-to-length stamp 4 to see the lengthening of the second flat bar 2 ,

The arrow 3 shows the direction of movement of a drive element.

The spring forces F1 such as F2 are larger than the punching forces required for punching the second flat bar 2 must be applied. As a result, first moves the entire upper block (in the illustration of the drawing) up to the support element 7 in the illustrated form with the spread spring F1 in the direction of the arrow 3 on the second cut-to-length punch 4 to.

This takes place until, in turn, the support element 7 relative to the second longitudinal punch 4 has reached the position of the end stop. It is in this context, for example, on the 3 referenced for the representation of an embodiment of the second Abfängstanzstempels 4 with the support feet 302 and 303 , These support feet 302 and 303 stand in the position of the end stop on the support element 7 on.

In this position of the end stop is the second flat bar 2 cut to length.

In the further course of the movement of the drive element, the support element 7 on the second Ablängstanzstempel (for example, via the support legs 302 . 303 ) supported. When the spring force F2 is greater than the spring force F1 , becomes the spring F1 compressed so that the top plate 1101 in the direction of the support element 7 is pressed. This is done until the two spacers 1102 and 1103 clash. This leaves the further movement in the direction of the arrow 3 the distance between the top plate 1101 and the support element 7 constant.

During this movement had the waste piece of the second flat bar 2 sufficient time after cutting to fall out of the punch.

In the further movement is the over the spring F2 stored second cut-long punches 4 pressed down in the representation of the drawing. Because of the support feet 302 . 303 the first flat bar is not damaged during this process.

This movement takes place until the first flat bar on the die 1105 rests.

In the further movement of the drive element 3 becomes the spring F3 compressed, which has a greater spring force than the spring F2 (and thus as the spring F1 ). This will make the plate 1104 in the direction of the plate 1101 pressed. Parallel to this will be the first cancel punch 5 as well as a punch 6 also (in the drawing) moved down to the first flat bar 1 too, on the matrix 1105 rests. This template 1105 has a counter cutting edge 1106 for the punch 6 on and a counter cutting edge 1107 for the full-length punch 5 , There are still support elements 1108 to see about the die 1105 is supported.

By designing the springs relative to each other and also in relation to the drive and punching forces, it is thus possible to carry out the punching operations with a drive element with a direction of movement. There is sufficient time that the waste piece of the second flat bar can fall out of the punch without disturbing the punching process of the first flat bar.

• ➢ Bewegung des Auflageelementes 7 mit den darauf aufliegenden Flachstäben 1 und 2 in Richtung des zweiten Ablängstanzstempels 4,
• ➢ Nach dem Stanzvorgang des zweiten Flachstabes 2:
  • ➢ Zusammendrücken der Feder F1 bei konstanter Position des Auflageelementes 7 mit den darauf aufliegenden Flachstäben 1 und 2. Während dieser Phase fällt das Abfallstück des zweiten Flachstabes 2 aus der Stanze.
  • ➢ Nach Erreichen der Endlage der Feder F1 (im Ausführungsbeispiel definiert durch die Abstandhalter 1102 und 1103):
    • ➢ „Nach unten Drücken“ des zweiten Ablängstanzstempels 4 entgegen der Federkraft F2 bis der erste Flachstab 1 in dem Bereich, in dem zuvor das abgeschnittene Abfallstück des zweiten Flachstabes war, auf der Matrize 1105 aufliegt.
    • ➢ Zusammendrücken der Feder F3. Dabei werden die Stanzstempel 5 und 6 weiter in Richtung des ersten Flachstabes 1 bewegt, der auf der Matrize 1105 aufliegt. Im weiteren Bewegungsablauf wird dabei der erste Flachstab 1 durch die Stanzstempel 5 und 6 gestanzt.

This results in the following sequence of movements:

• ➢ Movement of the support element 7 with the flat bars lying on top 1 and 2 towards the second end punch 4 .
• ➢ After the punching process of the second flat bar 2 :
  • ➢ Compression of the spring F1 at a constant position of the support element 7 with the flat bars lying on top 1 and 2 , During this phase, the waste piece of the second flat bar falls 2 from the punch.
  • ➢ After reaching the end position of the spring F1 (Defined by the spacers in the embodiment 1102 and 1103 ):
    • ➢ "Press Down" of the second end punch 4 against the spring force F2 until the first flat bar 1 in the area where previously the cut piece of scrap of the second flat bar was on the die 1105 rests.
    • ➢ Compression of the spring F3 , Here are the punch 5 and 6 continue in the direction of the first flat bar 1 moved on the die 1105 rests. In the further course of motion is thereby the first flat bar 1 through the punches 5 and 6 punched.

The 12 to 16 show a corresponding punch for schematic representation of 11 with the movement of the corresponding parts of the punch.

In the embodiment of 12 to 16 is compared to the embodiment of 11 the spring F1 left away. The support element 7 with the cuffing rod resting thereon, after the cutting rod has been cut to length, first of all a distance back to the part of the cuffing rod which subsequently passes through the punches 5 and 6 to work on the counter die 1105 rests. The time that goes by the cuff bar 1 on the counter die 1105 is sufficient, so that the waste by cutting the drive rod 1 has fallen out of the punch and thus not between the cuff bar 1 and the countermatrix 1105 is trapped.

12 shows the punch in the starting position. The punch is in the 12 to 16 shown in a view from above in a section through the punch. The direction of movement 3 the drive element is thus in the horizontal direction. The punch is also oriented so that the longitudinal direction of the forend 1 as well as the drive rod 2 after insertion into the punch also extends in the horizontal direction.

For the sake of clarity are in the 12 to 16 the drive rod 2 as well as the cuff bar 1 already shown as if the drive rod 2 and the cuff bar 1 already cut to length. In reality, the driving rod 2 as well as the cuff bar 1 initially longer (ie extended in the drawing plane upwards) and are only subsequently by the Ablängstempel 4 or. 5 cut to length.

13 shows the punch in further movement in the direction of work after inserting the drive rod 2 and the cuff bar 1 ,

The drive rod 2 is about the movement of the support element 7 (in the drawing to the left in the direction of the arrow 3 ) about the associated movement of the cuff bar 1 on the cut-off stamp 4 pressed. During this movement, the spacer also becomes 303 with the support element 7 in the direction of the full-length punch 4 pressed, but touches this in the representation of 13 not yet.

13 shows a representation in which the longitudinal punch 4 about 2/3 into the drive rod 2 has penetrated. It has been shown that then the waste piece of the drive rod 2 already separated. In this separation, the piece of waste already "jumps" away.

14 shows the further movement. The support element 7 is pushed further to the left in the illustration of the drawing. This now touches the spacer 303 the live dance stamp 4 , Upon further movement of the support element 7 This movement is via the spacer 303 on the full-length punch 4 transfer. This will make the end punch 4 also in the representation of the drawing moves to the left by the spring F2 is compressed. The spring force of the spring F2 is sized so that this spring force is greater than that for performing the punching operation of the drive rod 2 required force.

15 shows the further movement. It can be seen that the support element 7 was moved further (in the drawing to the left). About the spacer 303 became the cut-length dance stamp 4 also in the direction of movement of the support element 7 moves and thereby the spring F2 compressed.

The cuff bar 1 is now on the counter-mold 1105 on. The support element 7 Moves over the cuff bar and countermatrix to another movement in the direction of the arrow 3 prevented.

16 shows the further movement. The support element 7 gets over the cuff bar 1 on the counter die 1105 supported and does not move further in the direction of the arrow 3 , This will be the spring F3 compressed against the spring force This causes the punch 6 as well as the cutting stamp 5 opposite the cuff bar 1 moved further and edit this in cooperation with the Gegenmatrize 1105 , For this purpose, the counter-die has a counter-cutting edge for the punch 6 and a counter cutting edge for the Ablängstempel 5 on.

In the presentation of the 16 are both the driving rod 2 as well as the cuff bar 1 cut.

Opposite the representation of the 11 has the punch in the embodiment of 12 to 16 one spring less. The spring F1 the 11 is eliminated. This facilitates the construction of the punch because less in their spring forces matched springs must be used.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 29615383 U1 [0004, 0060]
• DE 10200137 A1 [0004]
• DE 202007002727 U1 [0004]
• DE 102014104146 A1 [0005]

Claims (10)

Punch for the processing of two flat bars (1, 2) which are connected point-like at one end such that the flat bars (1, 2) lie directly on each other with their respective wider surfaces, wherein the punch a Ablängstanzstempel (4) for at least one the two flat bars (2), wherein the first (1) of the two interconnected flat bars (1, 2) in a processing position in the punch on a support element (7) can be placed, through which the first flat bar (1) on the side surface is supported supporting, which lies opposite the side surface on which the second flat bar (2) rests, characterized in that the second (2) of the two flat bars (1, 2) is assigned a Ablängstanzstempel (4) that in this processing position of the second flat bar (2) between the first flat bar (1) and the said second flat bar associated second Ablängstanzstempel (4) directly on the first flat bar (1) rests that de r working stroke of the second cutting punch (4) relative to the second flat bar (2) is limited in the processing position such that the movement in an end stop (302, 303; 7) is stopped before the cutting edge (301) of this second cutting punch (4) reaches the plane in which the side of the second flat bar (2) resting on the first flat bar (1) is located. Punch after Claim 1 , characterized in that the punch has a common drive element for the second Ablängstanzstempel (4) and a first flat bar (1) associated Ablängwerkzeug (5), wherein the second Ablängstanzstempel (4) is resiliently mounted relative to the drive element such that the spring travel is greater than or equal to the distance that the cutting tool (5) travels during its working stroke, when the second longitudinal punch (4) has reached the end stop (302, 303; 7), that the punch is further designed such that the punched section of the second end punch (4) is carried out in a first processing step before the punching cut of a first cutting punch, which is associated with the first flat bar (1), that at least in this first processing step, the support element (7) is supported and that the second Ablängstanzstempel (4) Working stroke on the second flat bar (2) to be moved is such that the direction of movement d this second longitudinal punching punch (4) runs in the horizontal direction, the punch being designed such that there is an at least downwardly open waste channel for the waste piece of the second flat rod (2), the cutting tool (5) associated with the first flat rod (1) being present in the horizontal direction and parallel offset from the second longitudinal punch (4) is movable, wherein the moving speed of the cutting tool (5) during the working stroke and the distance in the direction of movement of the cutting tool (5) between the position in which the cutting tool (5) in the Moment is located, in which the second Ablängstanzstempel (4) this end stop (302, 303; 7) and the position before the cutting tool (5) has reached a distance to the supporting element (7) on which the first flat bar (1) rests, which is smaller than the sum of the thickness of the first flat bar (1) and second flat bar (2) in the direction of the working stroke of the cutting tool (5) are dimensioned such that after the first processing step, the waste piece of the second flat bar (2) has fallen out of the area and / or led out, in which the cutting tool (5) at its Run along working stroke before the cutting tool (5) has reached a distance to the support element (7) on which the first flat bar (1) rests, which is less than the sum of the thickness of the first flat bar (1) and the second flat bar ( 2) in the direction of the working stroke of the cutting tool (5). Punch after Claim 2 , characterized in that the cutting tool (5) is a longitudinal punch (5) and that the support element (7) is a die having a counter cutting edge to the first end punch (5), the die also in the punching cut of the first end punch ( 5) remains supported. Punch after Claim 3 , characterized in that in addition to the first continuous punch (5) for processing the first flat bar (1) at least one punch and / or punch (6) is present with a direction of movement which is parallel to the direction of movement of the first longitudinal punch (5), wherein the support element (7) also designed for this at least one punch and / or punch (6) as a die with a counter cutting edge for the punch and / or a recess for the countersink for this at least one punch and / or die (6) is. Punch after Claim 2 , characterized in that the support element (7) is associated with at least one resiliently mounted support member which supports the support element (7) in the first processing step, that this at least one support element by reaching the end stop (302, 303, 7) by the second A longitudinal punch (4) and / or by the further movement of the cutting tool (5) after reaching the end stop (302, 303, 7) by the second Ablängstanzstempel (4) is moved to a position, so that the support element (7) in the Movement direction of the cutting tool (5) is movable during the working stroke, that the cutting tool (5) is a die having a counter cutting edge for the first elongated punch that in one second cutting step, the cutting tool (5) is moved in the direction of the first punching punch, that the first elongated punch is fixed in place in the punch, that the support element (7) has a passage opening for the first elongated punch, and that after the second processing step, the support element in the supported position is moved back. Punch after Claim 5 , characterized in that in addition to the first Ablängstanzstempel for processing the first flat bar at least one also fixedly mounted in the punch punch and / or die is mounted, wherein the support element (7) for this at least one punch and / or punch a Has passage opening and wherein the cutting tool (5) for this at least one punch and / or punch (6) as a die with a counter cutting edge for the punch and / or a recess for the sinker for this at least one punch and / or die ( 6) is configured. Punch after Claim 2 , characterized in that the cutting tool (5) is a die having a counter cutting edge for the first elongated punch, that in a second processing step the cutting tool (5) is moved in the direction of the first flat bar up to an end position for this cutting tool (5) in which this cutting tool (5) supports the first flat bar resting on the support element (7) from the side of the first flat bar (1) which lies opposite the side with which the first flat bar (1) rests on the support element (7) in which the first flat punch assigned to the first flat bar has a direction of movement during working stroke, which is opposite to the direction of movement of the cutting tool (5) during its working stroke, the movement sequence of the working stroke of the first punching punch being adjusted in time so that the cutting edge of the first punching punch only becomes then hit the first flat bar (1), if this dur ch the cutting tool (5) is supported, wherein the support element (7) has a passage opening for the first Ablängstanzstempel. Punch after Claim 7 , characterized in that in addition to the first Ablängstanzstempel for processing the first flat bar at least one punch and / or punch is provided with a movement direction during the working stroke, which is oriented offset parallel to the direction of movement of the first Ablängstanzstempels, wherein the support element (7) for this at least one punch and / or punch has a passage opening and wherein the cutting tool (5) for this at least one punch and / or punch (6) as a die with a counter cutting edge for the punch and / or a recess for the sinker for this at least one punching and / or stamping die (6) is designed. Punch after Claim 1 , characterized in that the second Ablängstanzstempel is fixedly mounted in the punch, that the support element with the two flat bars lying thereon by means of a drive element is driven to the second Ablängstanzstempel movable that the movement of the support element is stopped in the position of the end stop, that by means of the drive element further at least a first Ablängstanzstempel for cutting to length of the first flat bar is driven, which has the same direction of movement as the support element, which is movable by means of the drive element to the second Ablängstanzstempel, wherein the support element (7) is resiliently mounted relative to the drive element such the spring travel is greater than or equal to the distance the first end punch (5) travels during its working stroke, when the support element has reached the end stop (302, 303, 7) with respect to the second end punch (4); Movement direction of the support element (7) extends in the horizontal direction, wherein the punch is formed such that for the waste piece of the second flat bar (2) an at least downwardly open waste channel is present, that the punch is further designed such that the punched section of the second Longitudinal punch (4) is performed in a first processing step before the punching cut of the first flat punch that is associated with the first flat bar (1) that after the first processing step before the first Ablängstanzstempels (5) on the first flat bar (1) first flat bar (1) supporting die is positioned on the side below the flat bar (1), which was previously the now cut piece of waste of the second flat bar, and wherein said supporting die has a counter cutting edge for the first elongated punch (5), said Support element a passage opening for the first Ab long punch (5). Punch after Claim 9 , characterized in that in addition to the first Ablängstanzstempel for processing the first flat bar at least one punch and / or punch is provided with a movement direction during the working stroke, which is oriented offset parallel to the direction of movement of the first Ablängstanzstempels, wherein the support element (7) for this at least one punch and / or punch has a passage opening and wherein the supporting die for this at least one punch and / or punch (6) as a die with a Counter cutting edge for the punch and / or a recess for the countersink for this at least one punch and / or die (6) is configured.

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