EP2111996B1 - Stamp with swappable stamp insert - Google Patents

Description

The invention relates to a stamp with replaceable punch insert for attaching labels, contours or imprints on a variety of materials.

From the prior art, a variety of punches for attaching a label or embossing in a variety of materials with various embodiments are known in the art. The stamp insert generally has raised or recessed stamp markings on its surface in order to affix a lettering or embossing to the material to be stamped in the gravure or gravure printing method. The stamp insert can be moved in a known manner either relative to the material to be stamped, or the material is injected in an injection molding in an injection mold, wherein the punch insert with the stamp marks itself is part of the injection mold, so that on the manufactured with the injection mold plastic part on the surface of the desired stamp marking is attached.

There are also releasable punch inserts known to attach with a stamp successively by replacing the punch insert different labels or imprints on the materials. The attachment of known interchangeable punch inserts is carried out, for example, by expensive screwing, so that the replacement of the punch inserts is often associated with a considerable amount of time. From the

DE 203 07 129 U1 a punch with a punch insert is known in which the punch insert has a substantially semi-circular cross section, wherein on the outer circumference of the punch insert a latching projection and the plunger body a spring is provided which cooperates with the latching projection, thus the punch insert on the punch body easily and without additional To attach parts. In the DE 20 2007 005 512 U1 a punch is described with a replaceable punch insert, wherein the punch insert has a latching projection, which is pivoted by a rotation in a recess of the plunger body and held by means of a spreading compound in installation target position, which disengages the expansion joint from the end position by force on the punch insert.

Based on this prior art, the present invention seeks to provide a stamp of the type mentioned with a replaceable punch insert for attaching different labels, contours or embossing on a variety To provide materials that is easily and safely interchangeable and also held during handling in a further improved and secured position.

To solve this problem, the invention provides a punch with replaceable punch insert according to the features of claim 1.

This stamp with replaceable punch insert for attaching labels, contours or embossing to a variety of materials is characterized in particular in that a locking projection of its punch insert has a detent recess, wherein in the installation target position of the punch insert in the punch body of the punch to a stop in a further recess of the Plunger body rests and engages in the arranged on the punch insert detent recess a movably guided locking body.

The locking body is arranged in a further, a third recess of the punch body. This in the direction of the punch insert movably guided locking body is pressed by a provided in a recess in the punch body energy storage, preferably a spring element, in the direction of the punch insert that the punch insert is held captive and secured by the latching connection in an end position in installation target position in the punch body. Nevertheless, the latching connection can be released by this force acting on the punch insert, so that the out of the end position disengaging punch insert after a Back rotation can be removed from the semi-circular recess of the punch body.
An advantageous embodiment is seen in that the latching connection consists of engaging in the detent recess of the interchangeable punch insert detent body, wherein the detent body is held in a detent position in the detent recess of the punch insert by the spring element fitting.
A preferred both manufacturing technology favorable as well as material-saving design is seen in that the locking body is preferably formed as a cylindrical pin whose cylindrical surface in the detent position in the detent recess and on the side surfaces of the recess and on the spring element is applied and that the detent body in the recess movable is guided, wherein acting on the locking body by means of the spring element in the direction of the punch insert a steady pressure force.

An advantageous development is seen in that the spring element is formed in particular as a flat band steel spring and disposed in a recess provided in the punch body below the recess for the detent body recess, wherein the spring element bears against the detent body, and wherein the necessary movement of the spring element, the recess wider than the thickness of the spring element is. The spring element is held pressed in the recess and secured against lateral slipping.

Characterized in that for insertion of the punch insert in the semicircular recess of the punch body of the punch insert is rotatable about an axis of rotation counterclockwise, wherein the locking projection of the punch insert into the recess of the punch body is hineinschwenkbar up to a stop in an end position and in this end position by the latching connection is held and in that for removing the punch insert from the punch body manually a force is exerted on the punch insert, wherein the latching body disengages from the latching recess, and wherein the punch insert is rotatable about its axis of rotation in the clockwise direction until the latching projection of the punch insert not more protrudes into the recess of the punch body and the punch insert is then removed from the punch body, a simple, safe and fast engagement and disengagement of the punch insert is ensured in the punch body.

By this type of training of the punch insert and the latching connection of the punch insert is held in a position safe and easy in the punch body during handling of the punch. By performing a rotational movement and the unilateral force acting on the punch insert by a user in which the punch insert rotates defined in the semicircular recess of the punch body and out of the latching connection snaps out, the punch insert can be easily removed without additional tools for replacement and then removed. In addition to the simple production and assembly of the punch with the replaceable punch quick replaceability is ensured by the punch insert is rotatable about a rotational axis counterclockwise when inserting the punch insert in the semicircular recess of the punch body, wherein the locking projection of the punch insert into the recess of the punch body pivoted into a stop in an end position and held captive in this end position by the latching connection.

Fig.1

einen erfindungsgemäßen Stempel in Vorderansicht;

Fig.2

den Stempel nach Figur 1, mit eingeschwenktem Stempeleinsatz;

Fig.3

den Stempel nach Figur 1, mit eingerastetem Stempelkörper und

Fig.4

eine Detailansicht zu den Elementen der Rastverbindung.

In Figur 1 ist ein erfindungsgemäßer Stempel 1 mit einem auswechselbaren, wenigstens eine Stempelmarkierung aufweisenden, Stempeleinsatz 4 dargestellt. Zum Einsetzen des Stempeleinsatzes 4 in einen Stempelkörper 2 des Stempels 1 weist der Stempelkörper 2 eine halbrunde Ausnehmung 5 und der Stempeleinsatz 4 einen halbrunden Außenumfang 6 auf. An dem halbrunden Außenumfang 6 des Stempeleinsatzes 4 ist ein Rastvorsprung 7 ausgebildet, der in einer Einbausolllage in eine korrespondierende weitere Ausnehmung 8 des Stempelkörpers 2 so hineinschwenkbar ist, dass der Stempeleinsatz 4 um eine Drehachse entgegen dem Uhrzeigersinn drehbar ist, wobei der Rastvorsprung 7 des Stempeleinsatzes 4 in die weitere Ausnehmung 8 des Stempelkörpers 2 bis zu einem Anschlag 13 in eine Endstellung hineinschwenkbar ist und in dieser Endstellung durch eine Rastverbindung 10, 11 gehalten ist.
Gemäß den Figuren 1 bis 4 weist der Stempeleinsatz 4 an seinem Rastvorsprung 7 eine Rastmulde 10 auf, wobei in der Einbausolllage der Stempeleinsatz 4 in dem Stempelkörper 2 gemäß Figur 3 an dem Anschlag 13 in der weiteren Ausnehmung 8 des Stempelkörpers 2 anliegt und in die Rastmulde 10 ein Rastkörper 11 eingreift, der in einer dritten Ausnehmung 14 des Stempelkörpers 2 angeordnet ist. Der Rastkörper 11 ist in Richtung des Stempeleinsatzes 4 beweglich geführt und wird durch ein in einer Aussparung 12 im Stempelkörper 2 vorgesehenes Federelement 9 derart in Richtung des Stempeleinsatzes 4 gedrückt, dass der Stempeleinsatz 4 in einer Endstellung in Einbausolllage im Stempelkörper 2 unverlierbar und gesichert mittels der Rastverbindung 10, 11 gehalten ist. Durch eine Krafteinwirkung auf den Stempeleinsatz 4 ist die Rastverbindung 10, 11 lösbar und der Stempeleinsatz 4 rastet aus der Endstellung wieder aus und ist nach einer Zurückdrehung aus der halbrunden Ausnehmung 5 des Stempelkörpers 2 wieder zu entnehmen.
In Figur 4 ist die Rastverbindung näher dargestellt, sie besteht aus dem in die Rastmulde 10 des auswechselbaren Stempeleinsatzes 4 eingreifenden Rastkörpers 11, wobei der Rastkörper 11 in der Raststellung in der Rastmulde 10 des Stempeleinsatzes 4 durch das Federelement 9 anliegend gehalten wird. Der Rastkörper 11 ist vorzugsweise als zylindrischer Stift ausgebildet ist, dessen Zylinderfläche in Raststellung in der Rastmulde 10 und an den Seitenflächen der dritten Ausnehmung 14 sowie an demThe invention will be explained in more detail with reference to an embodiment schematically illustrated in drawings. It shows:

Fig.1

a stamp according to the invention in front view;

Fig.2

the stamp after FIG. 1 , with pivoted punch insert;

Figure 3

the stamp after FIG. 1 , with engaged punch body and

Figure 4

a detailed view of the elements of the locking connection.

In FIG. 1 is an inventive stamp 1 with a replaceable, at least one stamp marking having, stamp insert 4 shown. To insert the punch insert 4 into a punch body 2 of the punch 1, the punch body 2 has a semicircular recess 5 and the punch insert 4 has a semicircular outer periphery 6. At the semicircular outer periphery 6 of the punch insert 4, a latching projection 7 is formed, which in a built-in desired position in a corresponding recess 8 of the punch body 2 hineinschwenkbar so that the punch insert 4 is rotatable about an axis of rotation counterclockwise, wherein the latching projection 7 of the punch insert 4 is hineinschwenkbar in the further recess 8 of the punch body 2 to a stop 13 in an end position and is held in this end position by a latching connection 10, 11.
According to the FIGS. 1 to 4 has the punch insert 4 on its locking projection 7 a detent recess 10, wherein in the installation target position of the punch insert 4 in the punch body 2 according to FIG. 3 on the stop 13 in the further recess 8 of the plunger body 2 rests and in the detent recess 10 engages a detent body 11 which is arranged in a third recess 14 of the plunger body 2. The latching body 11 is movably guided in the direction of the punch insert 4 and is pressed by a provided in a recess 12 in the punch body 2 spring element 9 in the direction of the punch insert 4 that the punch insert 4 in an end position in installation target position in the punch body 2 captive and secured by means of the latching connection 10, 11 is held. By a force on the punch insert 4, the locking connection 10, 11 releasably and the punch insert 4 disengages from the end position again and can be seen after a reverse rotation of the semi-circular recess 5 of the punch body 2 again.
In FIG. 4 is the detent connection shown in more detail, it consists of engaging in the detent recess 10 of the interchangeable punch insert 4 detent body 11, wherein the detent body 11 is held in the detent position in the detent recess 10 of the punch insert 4 by the spring element 9 fitting. The locking body 11 is preferably formed as a cylindrical pin, the cylindrical surface in the locking position in the detent recess 10 and on the side surfaces of the third recess 14 and on the

Spring element 9 abuts. The locking body 11 is movably guided in the third recess 14, wherein on the locking body 11 by means of the spring element 9 in the direction of the punch insert 4, a steady pressure force is exerted. The spring element 9 is formed in particular as a flat band steel spring and arranged in a provided in the punch body 2 below the third recess 14 recess 12, wherein the spring element 9 presses the locking body 11 in the locking recess 10 in the locking position. The spring element 9 is held in the recess 12 and secured against lateral slipping. For necessary movement of the spring element 9, the recess 12 is wider than the thickness of the spring element 9. Zur Holder of the punch body 2, a through hole, not shown, is provided for a retaining pin.

To remove the punch insert 4 from the punch body 2, a force is manually exerted on the punch insert 4, wherein the latching body 11 disengages from the catch recess 10 and the punch insert 4 is rotatable about its axis of rotation in the clockwise direction until the latching projection 7 of the punch insert 4 not protrudes more into the further recess 8 of the punch body 2 and the punch insert 4 can be removed from the punch body 2.

The invention is not limited to the illustrated embodiment, but is often variable within the scope of the disclosure, in particular in the embodiment of the latching connection 10, 11. The stamp according to the invention is for attaching labels, contours or imprints on a variety of materials, preferably in the so-called or gravure printing, but its use is not limited to these methods.

References directory

1

stamp

2

stamp body

3

Through hole for retaining pin

3 '

retaining pin

4

punch insert

4 '

Area with stamp markings (at pos.4)

5

semicircular recess of the punch body

6

semicircular outer circumference of the punch insert

7

catch projection

8th

further (second) recess

9

spring element

10

catch recess

11

latching body

12

recess

13

attack

14

third recess

Claims (8)

1. Punch with exchangeable punch insert for application of texts, profiles or embossings to different materials, comprising a punch body, which has a substantially semicircular recess (5) into which a punch insert (4) having punch markings (4') is insertable, wherein the punch insert (4) has at its semicircularly formed outer circumference (6) a detent projection (7) which is pivotable into a further recess (8) of the punch body (2) and in an intended installed position in the punch body (2) bears against an abutment (13) in the further recess (8) and is retained by a detent connection, for which purpose the detent projection (7) of the punch insert (4) has a detent trough (10) in which a detent body (11) engages, characterised in that the detent body (11) is arranged in a third recess (14) of the punch body (2) to be movably guided, wherein the movable guidance of the detent body (11) is oriented in the direction of the punch insert (4), and is so urged by an energy store, which is provided in a cut-out (12) in the punch body (2), in the direction of the punch insert (4) that the punch insert (4) is non-releasably held secured in an end setting in the intended installed position in the punch body (2) by means of the detent connection (10, 11) and wherein the detent connection (10, 11) is releasable by action of force on the punch insert (4) and the punch insert (4) is removable from the semicircular recess (5) of the punch body (2) out of the end setting with cancellation again of the detenting after a return rotation.
2. Punch according to claim 1, characterised in that the detent connection consists of the detent body (11) engaging in the detent trough (10) of the exchangeable punch insert (4), wherein the detent body (11) is retained in a detent setting in the detent trough (10) of the punch insert (4) by a spring element (9).
3. Punch according to claim 1 or 2, characterised in that the detent body (11) is preferably constructed as a cylindrical pin, the cylinder surface of which in the detent setting lies in the detent trough (10) and bears against the side surfaces of the recess (14) as well as against the spring element (9).
4. Punch according to any one of claims 1, 2 and 3, characterised in that the detent body (11) is so movably guided in the recess (14) that a constant pressure force acts on the spring body (11) in the direction of the punch insert (4) by means of the spring element (9).
5. Punch according to any one of claims 2, 3 and 4, characterised in that the spring element (9) is constructed as, in particular, a flat steel strip spring and is arranged in a cut-out (12), which is provided in the punch body (2) below the recess (14), for the detent body (11), wherein the spring element (9) bears against the detent body (11) and wherein the cut-out (12) is, for necessary movement of the spring element (9), wider than the thickness of the spring element (9).
6. Punch according to any one of claims 2, 3, 4 and 5, characterised in that the spring element (9) is retained in the cut-out (12) and secured against lateral slipping.
7. Punch according to any one of claims 1 to 6, characterised in that for insertion of the punch insert (4) into the semicircular recess (5) of the punch body (2) the punch insert (4) is rotatable in anticlockwise sense about an axis of rotation, wherein the detent projection (7) of the punch inset (4) is pivotable into an end setting in the recess (8) of the punch body (2) up to an abutment (13) and is held in this end setting by the detent connection (10, 11).
8. Punch according to any one of claims 1 to 7, characterised in that for removal of the punch insert (4) from the punch body (2) a force is manually exerted on the punch insert (4), wherein detenting of the detent body (11) in the detent trough (10) is cancelled and the punch insert (4) is rotatable about the axis of rotation thereof in clockwise sense until the detent projection (7) of the punch insert (4) no longer projects into the recess (8) of the punch body (2) and the punch insert (4) is removable from the punch body (2).

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