EP2555887A1

EP2555887A1 - Tool unit of a rotary kneading machine

Info

Publication number: EP2555887A1
Application number: EP11711524A
Authority: EP
Inventors: Martin Hork; Vinzenz Mroz; Werner Michi; Rico Warneck
Original assignee: Felss GmbH
Current assignee: Felss GmbH
Priority date: 2010-04-09
Filing date: 2011-03-28
Publication date: 2013-02-13
Anticipated expiration: 2031-03-28
Also published as: EP2555887B1; WO2011124486A1; KR101757957B1; DK2555887T3; US9149861B2; ES2488625T3; KR20130040879A; CN102883835A; PL2555887T3; DE102010014601A1; CN102883835B; US20130055779A1

Abstract

The invention relates to a tool unit of a rotary kneading machine (1), comprising a tool chamber (9) in which several shaping kneading tools for machining a tool (5) which can be introduced into the tool chamber (9) are provided, and a front covering (13) which can at least partially cover the tool chamber (9) on the end of the side of the tool chamber (14). Said front covering (13) can be used to change shaping kneading tools in at least one position in which the tool chamber (9) is released for removing or inserting shaping kneading tools on the end of the side of the tool chamber (14). The tools can be exchanged easily in such a manner that a front covering closing mechanism (20) is provided with an actuation device (26), which can lock the front covering (13) in a position in which said front covering (13) at least partially covers the tool chamber (9) on the end of the side of the tool chamber (14).

Description

Tool unit of a rotary swaging machine

The invention relates to a tool unit of a rotary swaging machine with a tool room, in which a plurality of Umformknetwerkzeuge for processing a insertable into the tool room workpiece are provided, and with a front cover, by means of which the tool room on the part of a tool room side is at least partially covered, wherein the front cover for changing Umformknetwerkzeugen in at least one position can be converted, in which the front cover releases the tool room for removal or for inserting Umformknetwerkzeugen part of the Werkraumseite.

Generally, by means of a rotary swaging z. B. rods or tubes with reduction of the cross section of at least one workpiece longitudinal section formed. For this purpose, a rotary swaging machine has a tool unit with a working space in which at least two forming tools are provided. The forming tools are designed such that they can completely or partially enclose the workpiece longitudinal section to be machined. By means of a Umformantriebs the forming tools are moved radially to the workpiece. It Different types of forming drives for rotary kneading machines are known. By way of example, hydraulic forming drives or electromotive ring drive drives can be mentioned.

The forming tools must be specially adapted to different forming operations. Therefore, the forming tools must be replaced usually between different workpiece machining.

In conventional rotary swaging the tool change is relatively expensive. In order to remove the forming tools from the tool room and insert other forming tools into the tool room, a front cover in the form of a front panel must be removed from a side of the tool room. The front panel is bolted to a component surrounding the tool room, usually the so-called jaw guide, by means of a plurality of fastening screws. To be able to remove the front panel from the tool room side, an operator must therefore first the individual mounting screws, z. B. by means of a wrench or the like, unscrew. This process is relatively tedious and time consuming.

The invention has set itself the goal of further developing the tool unit of a conventional rotary swaging machine in such a way that a tool unit results, which is characterized by a handling-friendly change of the forming swaging tools.

According to the invention the object is achieved by a tool unit of a rotary swaging machine with the features of claim 1. According to the invention provided with an actuator front cover latch is provided. By means of the front cover lock, the front cover can be locked in a position in which the front cover at least partially covers the tool space on the part of the workpiece space. Thanks to the invention, an operator no longer has to laboriously change the forming tools. B. loosen a screw of the front cover using additional tools. He just has to unlock the front cover lock by means of the actuator or lock after the tool change.

There are various types of front cover locks conceivable. Preferably, the front cover latch has one or more locking elements, which are movable by means of the actuating device substantially by a pivoting and / or a linear movement between a release position and a locking position. In the locking position, the front cover is fixed to the tool room side by z. B. forms a rear grip between frontabdeckungs- and tool room side elements. It can be used locking elements in the form of rods, bolts, plates, balls, etc.

Further advantageous embodiments of the tool unit according to claim 1. ^¬ arise from the Watch Maien of claims 2 to. 11

Preferably, the actuator of the front cover latch may comprise a drive by means of which the front cover latch for locking and unlocking the front cover is drivable. To name a few are hydraulic and pneumatic Actuating cylinder, by means of which at least one locking element between a release position and a Verriegeiungssteliung can be moved back and forth. Furthermore, can serve as a drive and an electric actuator.

Alternatively, the actuator of the front cover latch is configured to be manually operable by an operator. In particular, the actuating device for this purpose with a handle element, for. B. a handle or the like provided. To release and close the front cover latch, an operator only needs to grasp the handle and operate accordingly. This results in a compact and cost-effective variant of a front cover Verriegeiung that can be actuated without the use of additional tools.

A particularly compact design of a tool unit according to the invention is obtained by the actuator of the front cover Verriegeiung is attached to the front cover. The actuator and the front cover thus form a compact front cover unit. On the side of the tool room no special mechanisms for operating the front cover Verriegeiung must be accommodated in this way.

In this sense, it is of particular advantage if a handle for actuating the front cover Verriegeiung is provided on the front cover and in particular is not attached to components on the side of the tool room. In the case of the tool unit according to the invention, the front cover is provided in particular with a passage for introducing a workpiece section to be machined into the tool room. In addition, the front cover may be provided with further passage openings, through which, for example, adjustment for setting the stroke position of the Umformknetwerkzeuge may protrude beyond the tool room side. Preferably, a cover surrounding the adjusting wedges is provided on the front cover, via which a handle for actuating the front cover locking protrudes.

Of particular advantage is an embodiment of the invention, wherein the locking element of the front cover latch for locking and unlocking the front cover is movably mounted on the front cover. Also in this case, a compact front cover unit results from the front cover and the front cover lock. Additional locking mechanisms or the like on the part surrounding the tool room components are largely unnecessary.

Preferably, the front cover lock on a locking element which is pivotally mounted for locking and unlocking the front cover and rotatable. It is particularly space-saving, if the locking element to a perpendicular to the tool room side pivot axis, d. H . in particular perpendicular to the plane of the front cover, is pivotally mounted.

By a particularly pleasant handling, another type of tool unit according to the invention is characterized. In this case, the front cover is slidably supported relative to the tool room side by means of a front cover guide. The operator must far from the front of the tool room, do not carry the front cover. The front cover is supported on the front cover guide and can easily be pushed away from the tool room side. In this case, the transfer movement of the front cover relative to the workpiece space side also has the advantage that in the case of a front cover through which z. B. Einstellkeiie from the workpiece space on the workpiece space side protrude, the front cover can be deducted by the transfer movement at the same time also from the Einstellkeilen.

Advantageously, the front cover can also be mounted pivotably relative to the tool room side by means of a front cover pivot bearing. In particular, it is advantageous if the pivot axis of the front cover pivot bearing runs parallel to the plane of the tool room side. The front cover can be pivoted away from the tool room side in the manner of a flap. Again, the operator may not need to wear the front cover when removing from the tool room side.

A particularly pleasant handling results when the front cover in the transfer movement and / or the pivoting movement by means of a drive or mitteis drives is driven. For example, hydraulic, pneumatic, electric, etc. actuators can be used.

In a particularly preferred Ausführungsbeispie! the front cover is slidably mounted both by means of a front cover guide relative to the tool room side and at the same time by means of a front cover pivot bearing relative to the tool room side pivoted. As a result of the displacement movement along the front cover guide, the front cover can initially be moved, for example, into the front cover. B. be deducted from the above adjusting wedges. Then the front cover can be swung freely to the side to allow free access to the tool room.

The above-mentioned storage and management of the front cover when removing the tool room side is particularly advantageous in a tool unit in which the forming tools in the

Workpiece machining on the front cover come to rest. For example, due to Einsteilkeilen or the like, the forming tools are pressed in this case with relatively high forces axially on the front cover. Consequently, the front cover must be extremely stable and thus heavy. Thanks to the guidance or storage of the front cover, the relatively heavy front cover does not need to be worn by the operator.

To release the front cover latch, z. B. by vibrations in the workpiece processing, to prevent the Frontabdeckungs- lock can be braced in a Verriegelungsstel! Hung by means of a clamping device. For example, the front cover latch can be clamped or clamped like a bayonet catch (automatically) during locking. A disadvantage of this variant is that such a front cover lock is relatively stiff.

By a high level of functional reliability and at the same time a smooth operation of the front cover lock, a particularly preferred embodiment of the invention is characterized in which the front cover locking a self-actuated clamping device on to secure the front cover latch in a locked position. Preferably, the clamping device has driven clamping means, for. B. hydraulic clamping cylinder. The clamping force does not have to be applied by the operator in this case. The operator can activate the clamping device by actuating a switching element or the like, for example, after locking.

A particularly robust and proven in practice embodiment of the invention results in that the front cover latch has at least one bolt which is fixed to a component surrounding the tool space, in particular the so-called jaw guide. The bolt represents a particularly robust fastening or locking element. In this case, the bolt is arranged such that it protrudes through a passage opening on the front cover, when it covers the tool space on the part of the tool room at least partially. Furthermore, the front cover locking device in the Faiie preferred embodiment of the invention, a locking plate, which also has at least one passage opening through which the

Bolt head can protrude through. The locking plate is movable relative to the bolt between a release position and a locking position. In the locking position, the locking plate engages behind the protruding bolt head.

In a particularly compact design of the invention, the locking plate and the front cover are integrally formed. In this variant, the front cover itself is pivoted or rotated to be locked or unlocked, Alternatively, however, the Verriegeiungsplatte is movably mounted as a separate component on the front cover between the release position and the Verriegelungssteliung. advantageously, In this case, the front cover itself can not be turned or

be formed pivotable.

The invention will be explained in more detail below with reference to exemplary schematic illustrations. Show it :

FIG. 1; a swaging machine in a perspective

Presentation,

Figure 2: a tool unit of the rotary swaging machine

Figure 1, wherein a cover is removed and

FIG. 3 shows a part of the tool unit in a sectional view.

FIG. 1 shows a swaging machine 1 with a tool unit 2 and a workpiece feed unit 3 shown only partially. By means of the work piece feed unit 3, a workpiece 5 clamped on a collet 4, for example, can be produced. B. a pipe, along a feed axis 6 and working axis of the tool unit 2 are supplied. The insertion axis 6 coincides with a longitudinal axis of the clamped workpiece 5. Via an insertion opening 7 on a front side 8 of the tool unit 2, the clamped workpiece 5 can be introduced with a Werkstückiängsabschnitt to be machined into a tool room 9 of the tool unit 2.

In Figure 2, the tool unit 2 of the rotary swaging machine 1 is shown in exclusive division. The tool unit 2 has a front cover unit 11, wherein a cover hood 12 shown in FIG. ckungs unit 11 is not shown, so that arranged underneath components of the front cover unit 11 can be seen better.

The front cover unit 11 has a front cover which is formed as a circular front plate 13. The front panel 13 covers the tool room 9 from a tool room side 14 at least partially. It has a circular passage 15 for insertion of a workpiece 5 in the tool room 9. In addition, the front plate 13 is provided with further elongated passage openings 16 through which adjusting wedges (not shown) can protrude from the tool room 9 through the front panel 13 therethrough.

Furthermore, a front cover lock 20 is provided mitteis which the front panel 13 is locked in the position shown. The front cover latch 20 has a locking element in the form of an annular locking plate 21. The locking plate 21 lies flat against the side facing away from the tool room 9 side of the front panel 13. To lock it cooperates with four locking pin 22. The locking bolts 22 protrude through keyhole-shaped recesses 23 of the locking plate 21. The keyhole-shaped recesses 23 each have a portion with a diameter corresponding to at least the largest diameter of the bolt heads 24. In addition, they each have a section with a much smaller diameter. Due to the projecting through the keyhole-shaped recesses 23 locking pin 22, the locking plate 21 is pivotally mounted about the insertion axis 6 on the front panel 13. An actuator 26 of the front cover latch 20 has a handle in the form of an actuating lever 27. The operating lever 27 is fixed to a support ring 28, which in turn is fixedly connected to the locking plate 21.

The front panel 13 is fixed to a C-shaped support arm 29. The support arm 29 engages around a bearing carriage 30 and is pivotally connected thereto via a pivot bearing 31 about a pivot axis 32. The pivot axis 32 extends parallel to the plane of the covered by the front panel 13 tool room side 14 and parallel to the plane of the front panel thirteenth

The bearing carriage 30 is arranged displaceably along a displacement axis 33 on a guide rod 34 passing through the bearing carriage 30, which is fastened to the front side 8 of the tool unit 2. The displacement axis 33 extends perpendicular to the plane of the covered by the front panel 13 tool room side 14 and perpendicular to the plane of the front panel 13. The bearing carriage 30 is provided with a further handle in the form of a Handhebeis 35. The bearing carriage 30 and the guide rod 34 form a front cover guide 36 for the front panel 13th

An interrogation device 40 for locking interrogation is likewise fastened to the front side 8 of the tool unit 2. The interrogator 40 includes a shift sensor 41 and a shift lever 42. The shift lever 42 is fixed to the support ring 28. Its position is therefore determined by the rotational position of the support ring 28 about the insertion axis 6. In the illustrated rotational position of the support ring 28 (locking position) kon- the shift lever 42 clocks the shift sensor 41. In this way, it is checked whether the front cover latch 20 is locked.

In FIG. 3, a part of the tool unit 2 is shown in a sectional view along a vertical sectional plane in which the insertion axis 6 extends.

According to Figure 3, the tool room 9 is surrounded by a jaw guide 45, on which the U-forming tools are mounted radially displaceable. By means of the insertion axis 6 displaceable Einstellkeile the radial H ublage of the forming tools can be adjusted. The forming tools come in the workpiece machining on the front panel 13 to the system and act on these due to the deflection of the radial forming force by adjusting wedges with considerable axial forces. However, both the forming tools and the adjusting wedges are not shown in Figure 3.

The drive for the forming tools is designed as a conventional Außeniäufer- ring drive. A roller cage 47 equipped with pressure rollers 46 surrounds the jaw guide 45 centrally about the insertion axis 6. The roller cage 47 is in turn surrounded by a motor-driven external rotor ring 48. The insertion axis 6 consequently also forms a working axis of the tool unit 2.

As shown in FIG. 3, the locking bolts 22 are screwed into the jaw guide 45. They protrude through cylindrical recesses 49 of the front panel 13 through the front panel 13 therethrough. The bolt heads 24 are undercut with a circumferential groove 50. In the illustrated position of the locking plate 21, the with the circumferential groove 50 behind Cut bolt heads 24 in the portion of the keyhole-shaped recesses 23 on the locking plate 21, which has the smaller diameter, namely just a diameter of the diameter of the locking pin 22 in the region of the circumferential groove

50 corresponds, owns. The locking plate 21 thus engages behind the bolt heads 24. Due to the rearward engagement of the locking plate 21, the front panel 13 abutting the locking plate 21 in this position of the locking plate 21 can not be removed from the tool space side 14 in the direction of the insertion axis 6 (to the left in FIG. 3). , The locking plate 21 thus assumes a locking division.

Furthermore, four hydraulically operated clamping cylinders 51 are provided on the side of the front plate 13 facing the tool space 9 and are distributed uniformly about the insertion axis 6. In Figure 3, two of the Spannzyiinder 51 are shown. The tensioning rollers 51 are part of the tensioning device 53 for securing the front cover latch 20. When the tensioning cylinders 51 are activated, the front plate 13 is pushed away from the jaw guide 45 by them. As a result, the Verriegeiungsplatte 21 is pressed onto the undercut bolt heads 24 at the same time. The locking plate 21 is secured in this manner in the locked position against loosening.

The activation and deactivation of the clamping cylinder 51 by means of a switching valve, not shown. Alternatively, the clamping cylinders could

51 z. B. also be arranged such that through them the locking plate 21 is pressed away from the front panel 13, on the bolt heads 24. Incidentally, below the front cover unit 11 on the front side 8 of the tool unit 2, there is provided a support plate 52 for fixing a cooling lubricant return line (not shown).

In the following, a sequence of a tool change on the tool unit 2 will be described by way of example, starting from the ratios shown in the figures. According to the figures 1 to 3, the Verriegeiungsplatte 21 is arranged in a locking position and secured in this position by means of the clamping device 42. In order to remove the front plate 13 from the tool room side 14, an operator must first deak ^¬ tivieren the clamping cylinder 51 by pressing the switching valve, not shown. To release the front cover locking 20 of the left operating lever can now be moved ^¬ 27 by an operator in figure 2 downwards. As a result, a pivoting movement of the locking plate 21 about the insertion axis 6 is effected. The undercut Bolzenköp ^¬ fe 24 are now arranged in the keyhole-shaped recesses 23 in the sections which have a diameter which corresponds to the diameter of the bolt heads 24. The locking plate 21 is arranged in a release position. The front panel 13 is thus unlocked.

An operator can now grasp both hand levers 27, 35 of the front cover unit 11 and move the entire front cover unit 11 along the guide rod 34 forward, ie away from the tool room side 14. The locking pins 22 are led out of the recesses 49 of the front panel 13. At the same time, by this linear movement, the front cover unit 11 abge of adjusting wedges abge ^¬ projecting through the openings 16 on the front panel 13. After the front panel 13 has been withdrawn by the linear movement from the tool room side 14, an operator can pivot the front cover unit 11 about the pivot axis 32. The tool room 9 is now released for a tool change. In addition, by removing the front plate 13, the adjusting wedges, so-called base jaws, the pressure rollers 46 of the Rolienkäfigs 47, etc. exposed for a change or maintenance.

After the tool change the front cover unit 11 is again applied in the reverse order to the tool room side 14 and locked at this. An interrogation of the locking state of the front cover Verriegetung 20 by means of the interrogator 40 and finally the clamping device 53 of the Frontabde- ckungs-lock 20 is activated.

Claims

claims

Tool unit of a rotary swaging machine (1) with a tool space (9), in which several Umformknetwerkzeuge for processing a in the tool space (9) insertable workpiece (5) are provided, and with a front cover (13), by means of which the tool space (9) from the side a tool space side (14) is at least partially coverable, wherein the front cover (13) for changing Umformknetwerkzeugen in at least one position can be transferred, in which the front cover (13) the tool space (9) for removing or inserting Umformknetwerkzeugen part of the tool room side ( 14), characterized in that provided with an actuating device (26) front cover latch (20) is provided, by means of which the front cover (13) can be locked in a position in softer the front cover (13) the tool space (9) from the tool room side (14) at least partially covers.

Tool unit according to claim 1, characterized in that the actuating device (26) has a drive by means of which the front cover latch (20) for locking and unlocking the front cover (13) is drivable.

3. Tool unit according to claim 1, characterized in that the front cover lock (20) by means of the actuating device (26) is manually operable by an operator.

4. Tool unit according to one of the preceding claims, characterized in that the actuating device (26) of the front cover latch (26) on the front cover (13) is attached.

5. Tool unit according to one of the preceding claims, characterized in that the actuating device (26) has a on the front cover (13) provided handle (27).

6. Tool unit according to one of the preceding claims, characterized in that the front cover latch (20) has a locking element (21) which is mounted for locking and unlocking the front cover (13) on the front cover (13) movable.

7. Tool unit according to one of the preceding claims, characterized in that the front cover lock (29) has a Verriegeiungselement (21) for locking and unlocking the front cover (13), in particular a transverse to the tool space side (14) extending pivot axis (6), is pivotally mounted.

8. Tool unit according to one of the preceding claims, characterized in that the front cover (13) on a front cover guide (36) from the tool room side (14) away or on the tool room side (14) is mounted to be displaceable, wherein preferably a drive is provided, by means of which the front cover (13) during a displacement movement along the front cover guide (36) can be driven.

9. Tool unit according to one of the preceding claims, characterized in that the front cover (13) by means of a front cover pivot bearing (31) relative to the tool room side (14), in particular about a parallel to the plane of the tool room side (14) extending pivot axis (32), is pivotally mounted, wherein preferably a drive is provided, by means of ^¬ sen the front cover (13) during a pivoting movement about the front cover pivot bearing (31) is drivable.

10. Tool unit according to one of the preceding claims, characterized in that the front cover latch (20) has a clamping device (53) to secure the front cover latch (20) in a locking position.

11. Tool unit according to one of the preceding claims, characterized in that the front cover lock (20) has at least one bolt (22) which is fixed to a tool space (9) surrounding the component (45) such that the bolt (22 ) projects with an undercut bolt head (24) over the front cover (13) when the front cover (13) at least partially covers the tool space (9) from the tool room side (14), the front cover latch (20) has a locking plate (21). has, which is provided with at least one passage opening (23) through which the bolt head (24) can protrude through, and that the locking plate (21) to ι front cover (13) to lock, relative to the bolt (22) in ne locking position is movable, in which the locking plate (21) through the passage opening (23) projecting bolt head (24) engages behind.