WO1995028754A1

WO1995028754A1 - Impact press

Info

Publication number: WO1995028754A1
Application number: PCT/DE1995/000502
Authority: WO
Inventors: Wolfgang Hanke
Original assignee: Wolfgang Hanke
Priority date: 1994-04-16
Filing date: 1995-04-11
Publication date: 1995-10-26
Also published as: EP0756766A1; DE4413287C2; DE59506799D1; DE4413287A1; EP0756766B1

Abstract

A crimping impact press with an anvil and a press tool (1) movable vertically against the anvil preferably via an eccentric shaft, in which the press tool (1) comprises a wire crimper (2) and an insulation crimper (3) and in which there is an adjuster (4) determining the position or the bottom dead centre of the crimpers (2, 3) and hence the crimping height is provided between the crimpers (2, 3) and the drive. This adjuster (4) is constructed for the accurate and hence reproducible setting of the crimping heights on the wire crimper (2) and the insulation crimper (3) in such a way that the adjuster (4) has mutually independently operable adjusting means for the wire and insulation crimping height.

Description

"Impact press"

The invention relates to a stop press for crimping, with an anvil and a press tool that can be moved vertically against the anvil, preferably via an eccentric shaft, the press tool comprising a wire crimper and an insulation crimper, and a position between the crimpers and the drive ¬ tion or the bottom dead center of the crimper and thus the respective crimp height-setting actuator is provided.

Stop presses of the type in question have been known in practice for years.

During crimping, connecting wires are plugged with plug-in parts of plug connections or with other elements, on the one hand, care must be taken to ensure that there is trouble-free electrical contact between the strands of the connecting wires and the plug-in parts. On the other hand, the mechanical stability of the connection under tensile and bending loads must also be guaranteed. For this purpose, several processing steps are necessary, such as cutting and stripping the wire ends, separating the plug-in parts and actually squeezing them. A crimp processing machine usually comprises a lower tool in the form of an anvil, which serves as a support for the connecting wire and / or the plug-in parts. The anvil is usually fixed, so it is not moved, so that the position of its active plane is also fixed. Depending on the processing step, various top tools or pressing tools are used, each requiring precise tool guidance and precise adjustment of the position of the anvil with respect to the pressing tool. In addition, the stroke of the pressing tool must be adjusted exactly to the active plane of the anvil, so that the pressing tool on the one hand reaches and appropriately acts on the workpiece arranged on the anvil, but on the other hand not through a collision with the anvil in connection with the lifting movement is damaged. If, with a crimp processing machine, in particular with a so-called stop press for crimping, different stranded wires, ie stranded wires of different diameters and dimensions, or plug-in parts of different geometries, or plug-in parts of different geometries are to be processed one after the other, an exact and therefore relatively complex adjustment is required the upper tool or the so-called crimper. Furthermore, it is essential that during the crimping process the exposed wire on the one hand and the insulation by the so-called crimp on the other hand are to be detected or the crimp is to be fixed there. Consequently, two pressing tools are required, namely a so-called wire crimper and an insulation crimper, which can generally be actuated simultaneously via an eccentric.

However, the impact press known from practice according to the preamble of claim 1 is problematic insofar as the crimp height adjustment takes place there via an adjusting device with which the wire crimper and the insulation crimper are simultaneously adjusted with regard to the crimp height and thus with regard to the bottom dead center of the crimpers . A precise and, above all, reproducible setting of the wire crimp height on the one hand and the insulation crimp height on the other hand is not possible with the known stop press in the actuating device operating there.

The invention is therefore based on the object of designing and developing a stop press for crimping of the type in question in such a way that an accurate and reproducible setting of the crimp heights on the one hand of the wire crimper and on the other hand of the insulation crimper with simple con¬ structural means is possible.

The stop press for crimping according to the invention, in which the above-mentioned object is achieved, is characterized by the features of claim 1. After that, the Adjustment device for the wire crimp height and for the insulation crimp height which can be actuated independently of one another.

According to the invention, it was first recognized that the setting of the crimper must be possible independently of one another. It is only through this independent setting option that the respective setting, namely on the one hand for the wire crimper and on the other hand for the insulation crimper, can be actuated independently of one another and, above all, reproduced. Furthermore, it has been recognized that the independent setting means provided in the manner according to the invention can actually be actuated independently of one another, the separation avoiding an unwanted actuation of one or the other setting means.

With regard to a concrete mode of operation of the actuating device, which can be actuated independently of one another, it is of particular advantage if the actuating device via a clamping pin with the main press block of an eccentric shaft of the stop press, which is usually referred to as a press bar, preferably with play. is connected. The clamping pin then engages in a further advantageous manner with a molded-on clamping head in a pressure plate which is fixed to the press bear and which is ultimately firmly connected to the press bear or the main press block.

Furthermore, it is advantageous if both vertical and at least slightly horizontal play is provided between the pressure plate and the clamping head. In this respect, the entire facial expression hangs on the press bear by means of the clamping pin and can align itself freely. Only when pressing do the respective active surfaces lie against one another, so that a force transmission takes place on the one hand on the wire crimper and on the other hand on the insulation crimper.

Specifically, the clamping pin could be used with a press End facing away from the bear can be connected to a pressure block carrying the two crimper. For this purpose, the clamping pin could have at its free end facing away from the press bear an external thread with which the clamping pin is screwed into the pressure block.

In a further advantageous manner, at least one of the two crimpers, preferably the insulation crimper, is articulated vertically or in the pressing direction via guide pins which engage in a wedge on the pressure block. The other crimper, in this case the wire crimper, is then firmly connected to the pressure block, so that the pressure force is conveyed directly via the pressure block.

According to the above explanations, the previously generally discussed setting means act directly between the pressure plate and the crimpers, namely as variable spacers, which ultimately allows the bottom dead center of the crimper and thus the crimp height to be set.

The following explanations now relate to advantageous configurations of the actuating device or of the adjusting means belonging to the actuating device. With regard to a specific configuration of the adjusting means and on the basis of a simple structural configuration, it is now advantageous if the adjusting means comprise at least two preferably round adjusting disks. The force is then transmitted to the wire crimper from the machine-side pressure plate via adjusting members of the first adjusting disk, via the second adjusting disk and via the pressure block. The force transmission to the insulation crimper takes place accordingly from the pressure plate via the setting elements of the first setting plate and via the setting elements of the second setting plate with only vertical guidance of the insulation crimper through the pressure block. Consequently, the insulation crimper is not acted upon directly by the pressure block, but only by this lent out. The force is applied by direct contact of the insulation crimper with the setting elements of the second shim.

With regard to a specific configuration of the adjusting elements of the adjusting disks, it is a further advantage if they are designed as cams of different heights, so that the variability of the adjusting device or the adjusting means is achieved by means of these cams. The cams of the first shim - for adjusting the wire crimper - could preferably move upwards, i.e. protrude towards the pressure plate and preferably be arranged at the edge area in the circumferential direction. These cams then served for contacting the pressure plate, diametrically opposite cams preferably having the same heights. Correspondingly, the pressure plate then has contact surfaces for the cams at corresponding points, each diametrically opposite one another, so that in each case only the raised contact surfaces of the pressure plate come into contact with the cams of the first adjusting disk.

The cams of the second shim - for setting the insulation crimp - preferably protrude downwards and serve for direct contacting of the insulation crimp. It is also essential that these cams have different heights along the circumference of the second adjusting disk, one cam in each case contacting a corresponding contact or contact surface of the crimper.

In order to be able to check the setting from the outside, markings are provided on the outer edge of the setting disks - in the area of the respective cams - these being letters or numbers, for example.

For the two adjusting disks that are attached or pushed onto the clamping pin, it is now The adjustability of the adjusting device is particularly advantageous if the adjusting disks can be secured or fixed against unintentional rotation or adjustment according to the position of the cams. To secure against rotation or latching, spring-loaded latching means of the adjusting disks can preferably engage radially in corresponding exceptions of the clamping pin. These recesses can in turn be designed as axially extending grooves in the clamping pin with a continuous transition from the bottom of the groove to the groove walls. In the case of bolts with a rounded engagement head for engagement or with balls used for engagement, these could be easily pushed out of the grooves and then pushed back in again after overcoming the spring force, as a result of which the latching effect is produced.

The actuating device or its adjusting means is now designed as a "package" consisting of at least two adjusting disks, which can now also be held together or pressed together by spring force. For this purpose, a plate spring is arranged between the clamping head and the first or uppermost shim, which presses the adjusting means against the pressure block holding the crimper. In this regard, unintentional adjustment is prevented again.

Furthermore, between the lower adjusting disk and the pressure block - in a region between the adjusting members or cams, that is, outside of their engagement area - a preferably centrally arranged spacer disk could be provided, which bears directly on the pressing block and, due to its thickness, has contact between the adjusting members or cam of the lower shim with the wire crimper prevented.

The crimping height of the wire crimper on the one hand and of the insulation crimper on the other hand can be roughly adjusted using the adjusting means discussed above - first and second adjusting washers. For effective fine adjustment is now in a further advantageous an additional fine adjustment is provided between the pressure plate and the crimpers. This fine adjustment is specifically arranged between the two shims.

Basically, a device can be used for fine adjustment, which increases or decreases the distance between the two shims in the smallest possible steps. To this end, two cam disks which can be rotated relative to one another and have their active surfaces lying one on top of the other are advantageously provided which, like the adjusting disks, are circular. The active surfaces of the cams are the opposite surfaces, which preferably have two wedge surfaces placed in a curve. By turning the two cams, the effective surfaces or wedge surfaces slide against each other and change the effective thickness of the two cams.

In order to be able to turn one of the cam disks securely against the other cam disk, one of the cam disks is non-rotatably attached to the clamping pin. Furthermore, one of the cams on the outer edge has a scale, which can be both the non-rotatable and the rotatable cam. The respective other cam disc now has an edge which at least partially encompasses or overlaps the scaling disc and a recess or recess as a viewing window for scaling the first-mentioned cam disc, the recess at least having a line marking for reading a setting value scaling. In other words, the angular assignment of the two cam disks to one another results in an adjustable distance between the adjusting disks provided on both sides by turning the cam disks, so that fine adjustment is possible. This fine adjustment is fundamentally infinitely variable, adjustable by 0.02 mm in each case in accordance with the scaling selected here. In order to be able to actually arrange the non-rotatable cam disc in a rotationally fixed manner on the clamping pin, it has a locking device which engages in the recesses formed on the clamping pin. This can be a pin extending axially to the clamping pin, which engages on the one hand in the groove formed on the clamping pin and on the other hand in a corresponding recess on the inner edge of the non-rotatable cam disc. This prevents twisting.

From the point of view of a quasi-stepped adjustability, for example in steps of 0.02 mm in each case according to the selected scaling, the rotatable cam disc could have a latch engaging in the recesses formed on the clamping pin, the latching possibly including spring-loaded latching means, which preferably engage radially in the recesses of the clamping pin. Overcoming the spring force, a quasi locking of the actually continuously adjustable cam would be possible.

In order to effectively prevent an unintentional adjustment or adjustment of the cam disc by unauthorized persons, the rotatable cam disc could have a locking mechanism that can only be released with a special tool or key. This locking mechanism could in turn preferably have two locking lugs pressed by spring force against a toothing of an inner ring of the fixed cam disc, which can be pushed out of their locking position by overcoming the spring force by the tool or by the key. The locking lugs could be formed by two opposing, spring-loaded rocker arms arranged in the adjustable cam on the inner edge region, which simultaneously tilt or press out of the locking position by two pins of the tool which can be inserted into the cam from the outer edge to let. Only by using this special tool could the adjustable or rotatable cam disc be the winding of the spring-loaded latching means can be adjusted, so to speak, in stages.

There are various possibilities for advantageously designing and developing the teaching of the present invention. For this purpose, reference is made on the one hand to the claims subordinate to claim 1, and on the other hand to the following explanation of two exemplary embodiments of the invention with reference to the drawing. In connection with the explanation of the preferred exemplary embodiments of the invention with reference to the drawing, generally preferred refinements and developments of the teaching are also explained. In the drawing shows

1 in a schematic side view, partially cut away, the essential components of an embodiment of an impact press according to the invention,

2 shows the object from FIG. 1 along the line II-II,

3 shows a schematic exploded illustration of an exemplary embodiment of an actuating device of the stop press shown in FIG. 1,

Fig. 4 is a schematic exploded view of a second embodiment of an adjusting device of the stop press shown in Fig. 1 and

5 in an enlarged representation, schematically, the locking mechanism for the fine adjustment of the object from FIG. 1.

1 shows the components of a stop press intended for crimping, which are necessary for the discussion of the teaching according to the invention, with an anvil not shown in FIG. 1 and preferably vertically against the anvil via an eccentric shaft Movable press tool 1, the press tool 1 comprising a wire crimper 2 and an insulation crimper 3, and between the crimpers 2, 3 and the drive, not shown, a position or bottom dead center of the crimper 2, 3 and thus the respective crimp height predetermining actuating device 4 is seen.

According to the invention, the adjusting device 4 has adjusting means for the wire crimp height and for the insulation crimp height which can be actuated independently of one another.

1, 3 and 4 together show that the actuating device 4 is operatively connected via a clamping pin 5 to the main press block of an eccentric shaft, usually designated as press bar 6, with play. According to the illustration in FIG. 1, the clamping pin 5 engages with a clamping head 7 in a pressure plate 8 fixed on the press bar 6. There is both vertical and at least slightly horizontal play between the pressure plate 8 and the clamping head 7.

Fig. 1 in conjunction with Figs. 3 and 4 further er¬ know that the clamping pin 5 is operatively connected with its end facing away from the press bar 6 with a pressing block 9 carrying the two crimper 2, 3 via a screw connection. To be more precise, the clamping pin 5 has an external thread 10 at its free end.

In Fig. 1 is further indicated that one of the two crimper 2, 3, in this case namely the insulation crimper 3, articulated vertically, ie in the pressing direction, via guide pins 12 engaging in a wedge 11 to the pressure block 9. While the wire crimper 2 is firmly connected to the pressure block 9, thus receiving its force via the pressure block 9, the insulation crimper 3 is not acted upon by the pressure block 9, but rather by the adjusting means which will be explained later. With regard to the setting means to be explained below, it is essential that they act directly between the pressure plate 8 and the crimpers 2, 3 as variable spacers. In the exemplary embodiments selected in the figures, the adjusting means of the adjusting device 4 comprise two round adjusting disks, the force transmission to the wire crimper 2 from the pressure plate 8 via adjusting elements 15 of the first adjusting disk, the second adjusting disk 14 and the pressure block 9 follows. The power transmission to the insulation crimper 3, however, takes place from the pressure plate 8 via the adjusting members 15 of the first adjusting disk 13 and the adjusting members 16 of the second adjusting disk 14 with only vertical guidance through the pressure block 9. FIGS. 3 and 4 show particularly clearly that the adjusting members 15, 16 of the adjusting disk 13, 14 are designed as cams of different heights. The cams or adjusting members 15 of the first adjusting disk 13 - for adjusting the wire crimper 2 - protrude upwards, ie towards the pressure plate 8, and are arranged at the edge area along the circumference and serve to contact raised bearing surfaces 17 of the pressure plate 8 Diametrically opposed cams or adjusting members 15 each have the same height, so that contact is always made in pairs with the contact surfaces 17 of the pressure plate 8.

The cams or adjusting members 16 of the second adjusting disk 14 - for adjusting the insulation crimp 3 - project downwards as shown in FIGS. 3 and 4 and serve for direct contacting of the insulation crimp 3, which is held on the pressure block 9 so as to be vertically displaceable . The cams have different heights along the circumference of the second adjusting disk 14 and are marked with numbers on the outer edge.

3 and 4 also show that the adjusting disks 13, 14 on the clamping pin 5 correspond to the Position or adjusting members 15, 16 are secured against unintentional rotation or adjustment. To prevent rotation or latching, spring-loaded latching means are provided, which engage radially in corresponding recesses 18 in the clamping pin 5. The recesses 18 are formed in the exemplary embodiments selected here as grooves extending axially in the clamping pin 5 with a continuous transition from the base of the groove to the groove walls, so that a spring-loaded ball 19 is pressed into the recess 18.

1, 3 and 4 further show together that between the clamping head 7 and the first or upper shim

13 a plate spring 20 acts, which presses the adjusting means as a whole against the pressure block 9. In this respect, an adjustment package is literally formed.

Between the lower shim 14 and the pressure block 9, a spacer 21 is provided in a region between the adjusting members 16 or cams, which bears directly on the pressing block 9 and due to its thickness, a contact between the adjusting members 16 or cams of the lower shim

14 prevented with the wire crimper 2. This spacer disk 21 provides direct contact between the lower adjusting disk 14 - outside the cam area - under the pressure block 9.

1 to 4 also clearly show that an additional fine adjustment 22 is provided between the pressure plate 8 and the crimpers 2, 3. This fine adjustment 22 is arranged between the two adjusting disks 13, 14 and has two cam disks 23, 24 which can be rotated relative to one another and lie on one another with their active surfaces. The cams 23, 24 are circular. The active surfaces are the opposing surfaces, each of which has two wedge surfaces 25, 26, 27, 28 placed in a curve. One of the two cams 23, 24, namely both in FIG. 3 and in FIG. 4, the lower cam 24 in each case, is fixed on the clamping pin 5 in a rotationally fixed manner. For this purpose, a pin 29 is used, which acts to lock between the recess 18 of the clamping pin 5 and a corresponding recess 30 of the lower cam 24.

2, 3 and 4, one of the cams 23, 24 has a scale 31 on the outer edge. In the case of the representation selected in FIG. 3, this scaling 31 is assigned to the lower cam plate 24 and in the case of the representation selected in FIG. 4, the scaling 31 is assigned to the upper cam plate 23. Furthermore, the respective other cam disk - in the case of the illustration selected in FIG. 3, this is the upper cam disk 23 and in the case of the illustration selected in FIG. 4, it is the lower cam disk 24 - one that Curved disks 23 or 24 with a scaling partially encompassing or overlapping edge 32 and a recess 33 as a viewing window for the scale 31, the recess 33 in turn being provided with a line marking 34 for the scale 31.

The rotatable cam plate 23 (upper cam plate) has a latch 35 which engages in the recesses 18 formed on the clamping pin 5, this latching comprising spring-loaded latching means which engage radially in the recesses 18 of the clamping pin 5. This can be, for example, spring-loaded pins or balls.

2 and 5 now show very clearly that the rotatable cam 23 (upper cam) also has a locking mechanism 36 which can only be released with a special tool or key 37. The key 37 can be designed as a very special - insulated - tool, namely it can be inserted into the cam plate 23 and pulled out again or removed therefrom. However, it is also conceivable to assign the key 37 to the cam disk 23. In such a case, the key 37 - which can be actuated - would be mounted on the cam. This locking mechanism 36 comprises two locking lugs 39 which are pressed by spring force against a toothing of an inner ring 38 of the fixed or lower cam disk 24 and which can be pressed out of their locking position by overcoming the spring force by the tool or the key 37 . More precisely, the locking lugs are formed by two rocking levers which are arranged in the adjustable cam 23 on the inner edge region and are opposite one another and which can be tilted or pressed simultaneously out of the locking position by two pins 41 of the key 37 which can be inserted from the outer edge . With regard to further special design options, reference is made to the general part of the description.

Finally, it should be particularly emphasized that the exemplary embodiments discussed above were used in a purely arbitrary manner to discuss the teaching according to the invention, but did not restrict it to the exemplary embodiments.

Claims

1. stop press for crimping, with an anvil and a press tool (1) that can be moved vertically against the anvil, preferably via an eccentric shaft, the press tool (1) comprising a wire crimper (2) and an insulation crimper (3) and wo¬ if between the crimpers (2, 3) and the drive there is an actuating device (4) which specifies the position or the bottom dead center of the crimper (2, 3) and thus the respective crimp height, characterized in that the actuating device ( 4) has adjustment means for the wire crimp height and for the insulation crimp height which can be operated independently of one another.

2. Stop press according to claim 1, characterized in that the adjusting device (4) via a clamping pin (5) with the press bar (6) or the main press block of an eccentric shaft is preferably operatively connected with play.

3. Stop press according to claim 2, characterized in that the clamping pin (5) engages with a clamping head (7) in a on the press bear (6) fixed pressure plate (8).

4. stop press according to claim 3, characterized in that between the pressure plate (8) and the clamping head (7) both vertical and at least slightly horizontal play is provided.

5. Stop press according to one of claims 2 to 4, characterized in that the clamping pin (5) with its end facing away from the press bearing (6) has an end with a pressing block (9) carrying the two crimpers (2, 3), preferably via a Screw connection, is operatively connected.

6. Stop press according to one of claims 3 to 5, characterized in that at least one of the two crimpers (2, 3), preferably the insulation crimper (3), can be moved vertically or in the pressing direction via a wedge (11) which engages ¬ approximately pins (12) is articulated on the pressure block (9).

7. Stop press according to one of claims 1 to 6, characterized in that the adjusting means act directly between the pressure plate (8) and the crimpers (2, 3) as a variable spacer.

8. stop press according to one of claims 1 to 7, characterized in that the adjusting means comprise at least two preference as round shims (13, 14) that the power transmission to the wire crimper (2) from the pressure plate (8) via adjusting members (15, 16) of the first shim (13), the second shim (14) and the pressure block (9) and that the power transmission to the insulation crimper (3) from the pressure plate (8) via the adjusting members (15) of the first shim (13) and the adjusting members (16) of the second adjusting disk (14) with only vertical guidance through the pressure block (9).

9. Stop press according to claim 8, characterized in that the adjusting members (15, 16) of the shims (13, 14) are designed as cams of different heights.

10. Stop press according to claim 9, characterized in that the cams of the first shim (13) - for setting the wire crimper (2) - preferably upwards, ie towards the pressure plate (8), protrude, preferably arranged at the edge area in the circumferential direction and serve to contact the pressure plate or raised bearing surfaces (17) of the pressure plate (8) and that diametrically opposite cams preferably have the same heights.

11. Stop press according to claim 9 or 10, characterized gekenn¬ characterized in that the cams of the second adjusting plate (14) - for setting the insulation crimpper (3) - preferably protrude downwards and serve for direct contacting of the insulation crimper (3) and that the cams have different heights along the circumference of the second adjusting disk (14).

12. Stop press according to claim 11, characterized in that the cams of the shims (13, 14) on the outer edge are marked GE.

13. Stop press according to one of claims 1 to 12, characterized in that the shims (13, 14) on the Ein¬ clamping pin (5) according to the positioning of the cams ge are secured against accidental rotation or adjustment.

14. A stop press according to claim 13, characterized in that for locking against rotation or locking spring-loaded locking means of the shims (13, 14) preferably radially in corresponding recesses (18) of the clamping pin (5) grei¬ fen.

15. Stop press according to claim 14, characterized in that the recesses (18) as axially extending in the clamping pin (5) extending grooves with a continuous transition from the bottom of the groove to the groove walls is formed.

16. Stop press according to one of claims 1 to 15, characterized in that between the clamping head (7) and the first or uppermost shim (13) acts a parts spring (20) which presses the adjusting means against the pressure block (9) .

17. Stop press according to one of claims 1 to 16, characterized in that between the lower adjusting disc (14) and the pressure block (9) - in a region between the adjusting elements (15, 16) or cams - a spacer disc ( 21) is provided, which rests directly on the pressure block (9) and, owing to its thickness, prevents contact between the adjusting members (15, 16) or cams of the lower adjusting disk (14) with the wire crimper (2).

18. Stop press according to one of claims 1 to 17, characterized in that an additional fine adjustment (22) is provided between the pressure plate (8) and the crimper (2, 3).

19. Stop press according to claim 18, characterized in that the fine adjustment (22) between the two adjusting disks (ben, 13, 14) is arranged.

20. Stop press according to claim 18 or 19, characterized gekenn¬ characterized in that the fine adjustment (22) comprises two mutually rotatable, with their active surfaces adjacent cam discs (23, 24).

21. Stop press according to claim 20, characterized in that the cams (23, 24) are circular and the active surfaces are the opposing surfaces, which preferably have two wedge surfaces (25, 26; 27, 28) placed in a curve.

22. Stop press according to claim 20 or 21, characterized gekenn¬ characterized in that one of the cams (24) is rotatably fixed to the Ein¬ clamping pin (5).

23. Stop press according to claim 22, characterized in that one of the cams (23, 24) on the outer edge has a scaling (31).

24. Stop press according to claim 23, characterized in that the respective other cam disc (23, 24) at least one of the scale (31) having cam (23, 24) partially encompassing or overlapping edge (32) and a recess (33) or recess as a viewing window for the scaling (31), the recess (33) being provided with at least one line marking (34) for the scaling (31) is.

25. A stopper according to one of claims 22 to 24, characterized in that the non-rotatable cam (24) has a recess (30) engaging in the recesses (30) formed on the clamping pin (5).

26. Stop press according to one of claims 22 to 25, characterized in that the rotatable cam (23) has a recess (18) engaging in the recesses (18) formed on the clamping pin (5) (35).

27. Stop press according to claim 26, characterized in that the latching (35) comprises spring-loaded latching means which preferably engage radially in the recesses (18) of the clamping pin (5).

28. Stop press according to claim 26 or 27, characterized gekenn¬ characterized in that the rotatable cam (23) has a Feststell¬ mechanism (36) that can only be solved with a special tool or key (37), the tool or Key (37) can be permanently assigned to the cam disc (23).

29. A stop press according to claim 28, characterized in that the locking mechanism (36) preferably has two locking lugs (39) which are pressed by spring force against a toothing of an inner ring (38) of the fixed cam (24) and which overcomes the spring force can be pressed out of their locking position by the tool or by the key (37).

30. Stop press according to claim 29, characterized in that the locking lugs (38) of two in the adjustable cam disk (23) arranged on the inner edge region, mutually opposite, spring-loaded rocker arm (40) are formed, which are characterized by Allow two pins (41) of the tool, which can be inserted from the outer edge, to be tilted out of the locking position or pressed simultaneously.