EP0791132A1

EP0791132A1 - Process and device producing a honeycomb body, especially a catalyst substrate, with a housing

Info

Publication number: EP0791132A1
Application number: EP95936472A
Authority: EP
Inventors: Gottfried W. Haesemann; Lutz Guthke; Ludwig Wieres
Original assignee: Emitec Gesellschaft fuer Emissionstechnologie mbH
Current assignee: Vitesco Technologies Lohmar Verwaltungs GmbH
Priority date: 1994-11-07
Filing date: 1995-10-11
Publication date: 1997-08-27
Anticipated expiration: 2015-10-11
Also published as: AU3841095A; CN1069948C; DE59502017D1; CN1163653A; JP2950997B2; KR970707367A; ES2116777T3; MY114904A; TW529474U; EP0791132B1; JPH10502577A; KR100351339B1; WO1996014500A1; DE4439685A1

Abstract

The invention relates to a device for producing a honeycomb body (3) with a jacket tube (2) comprising a plurality of radially movable segments (5) by means of which the jacket tube can be deformed. The segments have a sliding surface (9) with a wedge-shaped cross-section. There is at least one annular, axially movable closure (7) surrounding the segments having at least one oblique surface (8) which slides on the sliding surface of each segment. To operate the closure (7) there is an actuating device (10) connected to the closure. The honeycomb body with a jacket tube is fitted in a space bounded by the segments. The closure is then moved axially so that its surface slides on a sliding surface with a wedge-shaped cross-section on each segment, shifting the segments radially in relation to the jacket tube and thus deforming said tube.

Description

DESCRIPTION

Method and device for producing a honeycomb body, in particular a catalyst carrier body, with a housing

The invention relates to a method and a device for producing a honeycomb body, in particular for cleaning exhaust gases from internal combustion engines, with a catalyst carrier body arranged in a jacket tube or housing and having a plurality of channels through which an exhaust gas can flow.

Devices for exhaust gas purification are known which have a metallic catalyst carrier body. The metallic catalyst carrier body is produced by winding or devouring sheet metal layers, at least some of the sheet metal layers being structured. Such catalyst carrier bodies are described, for example, in EP 0 245 738.

The catalyst carrier body are arranged in a jacket tube or housing. The individual sheet layers are with each other and with the jacket tube z. B. connected by soldering, sintering or welding.

The device is integrated in an exhaust system. Since the two ends of the device each have to be connected to a pipe of the exhaust system, the device is connected to a diffuser on the exhaust gas inlet side and to a reducer on the exhaust gas outlet side. The task of the diffuser is the flow cross-section for the exhaust gas from the cross section of the pipe to the cross section of the device and the reducer to reduce the flow cross section on the outlet side of the device to the cross section of the adjoining pipe. The diffuser and the reducer are connected to the device by welding. For this it is necessary that the dimensions of the tube on the gas inlet and gas outlet side and the contour of the jacket tube are within certain tolerance limits. The jacket tube usually protrudes about 5 to 10 mm on both ends of the catalyst carrier body. In order to achieve the geometry and dimensions of the jacket tube specified for connection to the diffuser or the reducer, the jacket tube is calibrated from the inside before and / or after the catalyst support body has been inserted. The calibration has hitherto generally been carried out in such a way that a tool which has a plurality of segments is inserted into the casing tube and the individual segments are spread radially outwards. The segments are spread beyond the yield point of the jacket pipe material, so that the jacket pipe is stress-free in this area. Since the segments of the tool are spread radially outwards, a precisely predetermined contour cannot be achieved.

A device for producing a honeycomb body with a jacket tube is known from US Pat. No. 5,096,111, which comprises several radially displaceable segments, through which the jacket tube of the honeycomb body is deformable. The individual segments are connected at one end to a carrier which is connected to a piston rod of a cylinder-piston unit. The carrier with the segments is axially displaceable in and out of a cylindrical body. For this purpose, the cylinder-piston unit is connected to the cylindrical body. In the entry area of the cylindrical body, a conical formed section which tapers in the axial direction from the inlet side.

To deform the jacket tube, a plurality of segments encompass the jacket tube of the honeycomb body. Then the honeycomb body is drawn into the cylindrical body by means of the cylinder-piston unit. When the honeycomb body is pulled in, it is successively deformed in the conical section. After the deformation has taken place, the honeycomb body with the segments is brought out of the cylindrical body by the cylinder-piston unit. During the axial displacement of the segments, they slide along the inner surface of the cylindrical body.

From GB 2 020 190 A it is known to use a device for deforming the casing tube of a honeycomb body which has a plurality of radially movable segments.

Devices for exhaust gas purification are also known, in which the catalyst carrier body consists of a ceramic material. Such catalyst carrier bodies are arranged in a two-part housing. The G 87 01 980.9 UI describes such a housing for accommodating a monolithic ceramic body.

The half shells of the housing are made from sheet metal by deep drawing. For the storage of the ceramic catalyst carrier body, a casing for the ceramic body is provided between the outside of the carrier body and the housing.

The two housing shells are then pressed together and welded gas-tight on their contact surfaces. Corresponding manufacturing Driving for a device for exhaust gas purification with metallic catalyst carrier bodies are known from DE 28 56 030 C2 and EP 0117 602 Bl.

The housing parts can be manufactured with high accuracy. In contrast, the ceramic catalyst carrier bodies cannot be produced precisely enough. It is therefore necessary to dimension the housing in such a way that ceramic catalyst carrier bodies with oversize or slight deformations can also be integrated into the housing. In order to prevent a gap from forming between the catalyst carrier body and the housing through which the exhaust gas passes uncleaned, an intermediate layer, in particular a so-called swelling mat, is inserted. Other intermediate layers with wire mesh and. Ä. are known. These layers can also be coated with a catalyst.

The production of a device for exhaust gas purification with a ceramic catalyst carrier body is therefore relatively complex.

The aim of the present invention is to provide a device for producing a honeycomb body which is structurally simple and which rationally brings about a uniform and gentle deformation of the jacket tube. Another object of the present invention is to provide a method for producing a honeycomb body, which simplifies the manufacture of a honeycomb body and allows higher cycle times in the manufacture of the honeycomb body.

This object is achieved by a device with the feature of claim 1 and by a method with the features of the application. Proverb 20 solved. Advantageous further developments are the subject of the subclaims.

The device according to the invention for producing a honeycomb body with a jacket tube, in particular a catalyst carrier body for internal combustion engines, is characterized in that the segments each have a sliding surface which is wedge-shaped in cross section. The segments are surrounded by an axially displaceable, ring-shaped closing element which has at least one inclined surface. When the closing element is axially displaced, the inclined surface of the closing element slides on the wedge-shaped sliding surface of each segment, as a result of which the axial displacement of the ring brings about a radial displacement of the segments relative to the tubular casing. The simultaneous radial movement of the segments has the result that all segments exert a force synchronously on the jacket tube, by means of which the jacket tube is plastically deformed. An actuating device is provided for the axial displacement of the closing element and is connected to the closing element. The force transmitted from the closing element to the segments can be adjusted accordingly by the angle of the inclined surfaces.

The inclination of the sliding surface of each segment and the inclined surface of the closing element acting on the sliding surface need not be the same for each segment. Depending on the area of use of the device and the deformation generated by the device, the inclination surfaces can be designed differently, as a result of which different forces can act on the jacket tube when viewed in the circumferential direction. As a result, a uniform load on the honeycomb body can be achieved. This is of particular interest in the case of honeycomb bodies made of ceramic materials or in the case of extruded metallic honeycomb bodies, since this enables a uniform pressure load to be set without tensile or gravitational forces occurring which would destroy the body.

The segments can immediately deform the jacket tube. Here, the segments also represent tool segments.

According to a further advantageous idea, it is proposed to releasably connect inner tool segments to the segments, e.g. B. by hanging. A wide range of uses of the device is achieved through this development. By simply exchanging the inner tool segments, different cross sections of a jacket tube can be produced by plastic deformation. The number of tool segments does not necessarily have to correspond to the number of segments. However, it is advantageous if the number of tool segments is equal to the number of segments.

The inclined surface of the closing element is preferably only partially in contact with the sliding surface, so that the two surfaces form a free angle with one another. This angle is preferably 0.5 to 3 °. This ensures that the locking element does not become jammed with the segments.

The segments are advantageously arranged to be radially displaceable inward against a spring force. This has the advantage that after a plastic deformation of the casing tube and an axial displacement of the closing element into a position in which the sliding surface and the inclined surface are no longer in contact, the segments automatically move radially outward, as a result of which they release the honeycomb body.

At least one spring element is preferably provided, which is connected to each segment. The spring element is advantageously a spring ring which is arranged in a groove formed on the surface of each sector opposite the sliding surface.

The spring element is then loaded under pressure. If the segments are to be tool parts that directly deform the casing tube, it is expedient to cover the grooves or to arrange the spring element on the outer surface of the segments, so that there are no discontinuities in the surface of the segment due to the axial extension of the segments System comes to the jacket pipe occur.

To actuate the closing element, an actuating device is provided which comprises at least two, preferably four, rods, a plate and a cylinder-piston unit. The piston rod of the cylinder-piston unit is connected to the plate. One end of each rod is connected to the plate and the other end of each rod is connected to the closing element. The cylinder-piston unit transmits the axial movement via the plate and the rods to the closing element. This training has the advantage that only one cylinder-piston unit has to be used to generate force.

The plate is expediently guided in a sliding manner, thereby preventing the closing element from possibly being misaligned. The segments are preferably arranged on a base plate. A base plate is provided below the base plate. Carriers are arranged between the base plate and the base plate, the base plate and the base plate and the carriers forming a frame of the device. The cylinder-piston unit is arranged on the base plate. The rods engaging the closing element extend through bores formed in the base plate. These through bores can simultaneously serve as guides for the rods. The carriers optionally form guides for the plate, as a result of which the carriers have a dual function and additional guides for the plate can be dispensed with.

Preferably, a bore is provided in the base plate coaxial with the receptacle for the honeycomb body forming the segments, through which a stamp of an ejection device can be inserted and removed into the space delimiting by the segments. This has the advantage that the honeycomb bodies can be removed from the device in a simple manner. The ejection device is preferably a pneumatically or hydraulically operated cylinder-piston unit.

The ejection device can also be a lever which can be pivoted about an axis, the first arm of which is coupled to a rod or the plate and the second arm is connected to the stamp.

According to a further inventive idea, it is proposed to design the device with a frame in which an annular chamber is formed. A piston is arranged in the annular chamber and is connected to rods which engage the closure element. The chamber is filled with a fluid that is supplied via lines a pressure accumulator is supplied, acted upon, whereby the relative position of the piston can be changed. The advantage of this training can be seen in the fact that the power flow is particularly favorable. The segments are arranged on the frame, so that the frame is loaded by the axial component of the force acting on pressure. Another advantage is the integration of the actuating device in the frame, whereby a very compact design is achieved.

A stop is preferably provided for fixing the axial position of a honeycomb body. The stop is preferably designed in the form of lugs which are provided on at least two segments.

The device is advantageously designed such that a passage opening is provided below the segments, through which a honeycomb body can be removed from the deformation region after plastic deformation has taken place.

By means of the device according to the invention, it is now possible to plastically deform at least a partial area, preferably the end area, of the casing tube on all sides by radially displaceable segments from the outside in to an outer contour of predetermined dimensions. This procedure simplifies the manufacture of the honeycomb body, since the segments causing the plastic deformation do not attack the narrow remaining projection of the casing tube from the inside, but can act on a larger end region from the outside. The above-mentioned projection of the jacket tube in front of and / or behind the catalyst carrier body can be reduced to a minimum. The protrusion can then be dimensioned such that only those for a welded connection of the casing tube with a diffusion sor or a reducer necessary area is provided. All of the processes and devices described here apply equally to round, elliptical, oval and other cross-sectional shapes, although the main application is currently round cross-sectional shapes.

If the honeycomb body is plastically deformed only at one end region of the jacket tube, it is necessary for the plastic deformation of the second end region to provide a second device for carrying out the method or to rotate the jacket tube about its transverse axis by 180 °. Both solutions do not always provide a satisfactory result. It is therefore proposed to carry out the plastic deformation by means of segments which act on both end regions of the casing tube.

The entire casing tube can be plastically deformed by the segments. The jacket tube initially has a geometry which, after plastic deformation, leads to the desired geometry of the device. It is not imperative here that the catalyst carrier body is already firmly connected to the jacket tube before the deformation. On the basis of this idea according to the invention, ceramic bodies which are round, elliptical or oval in cross-section (race-track shape) can also be fastened in a casing tube as a housing. By plastic deformation of the casing tube, the segments having a corresponding contour, a one-piece housing for the ceramic body can be produced without the body being destroyed, since the body is loaded under pressure. Compared to a housing made of half-shells, the honeycomb body can be clamped uniformly on all sides, thereby preventing the ceramic walls from breaking even with high clamping forces. This makes the elaborate Production of a honeycomb body with a jacket tube is very simplified. The segments can be designed with corresponding elevations or recesses for clamping the casing tube on the catalyst carrier body. If recesses are provided on the segments, these lead to external beads and thus to a higher rigidity of the casing tube, which is particularly advantageous since no or only very small forces act on the body which result from torsion (torsion) of the casing tube . The jacket tube can also be compressed in the device in order to produce special shapes.

With the device according to the invention, it is now possible to also arrange ceramic bodies in a one-piece jacket tube without the ceramic honeycomb body being destroyed by the plastic deformation of the jacket tube.

The method according to the invention for producing a honeycomb body with a jacket tube is characterized in that the honeycomb body passes through at least one calibration station in which the jacket tube of the honeycomb body is deformed while maintaining its transport direction. This configuration of the method gives the possibility of considerably reducing the cycle time. It is no longer necessary, as is known from the prior art, to first introduce the honeycomb body into a calibration station and, after calibration, to convey it back out of the calibration station. The continuous processing of the honeycomb body also reduces the apparatus structure required for the production of the honeycomb body, since handling devices are no longer necessary which introduce a honeycomb body into a calibration station and bring it out again. A method is preferred in which the honeycomb body passes through several calibration stations in succession. Preferably, only a predetermined axial section of the jacket tube is deformed in the individual calibration stations. The passage of the honeycomb body through individual calibration stations, in which only predetermined axial sections of the jacket tube are deformed, have the advantage that the tools with which the deformation is carried out can be designed more simply. The deformation of the casing tube can be relatively large. In order to minimize the wear of the tools and for the gentle processing of the jacket tube, it is proposed to successively deform the jacket tube in the successive calibration stations. The degree of deformation, ie the difference between the shape of the jacket tube before and after the deformation in relation to the initial shape of the jacket tube, is the same in the individual calibration stations. According to a further advantageous idea, however, it is proposed to deform the jacket tube to different degrees in the manufacture of the honeycomb body in the individual calibration stations. A different degree of deformation of the jacket tube in the individual calibration stations leads to a more favorable stress on the jacket tube, since the jacket tube material can recover between the calibration stations.

The individual calibration stations are preferably passed through one after the other by the honeycomb bodies.

According to a further advantageous idea, a method is proposed in which the honeycomb body is subjected to at least one further production step at least after a calibration station. A manufacturing step is not only to be understood as steps through which the manufacturing progress is continued, but also as steps that begin the manufacturing process as such. increase. It can be exemplary and expedient to provide the outside of the jacket tube between two calibration stations with a lubricant in order to reduce the friction between a closing segment and the jacket tube.

The honeycomb body is preferably deformed with a jacket tube in a calibration station in which the honeycomb body with the jacket tube is arranged in a space delimited by segments. Thereafter, at least one annular closing element having at least one inclined surface is axially displaced, the surface sliding on a sliding surface which is wedge-shaped in cross-section on each segment and the segments being displaced radially to the casing. The sheath is deformed by the radial displacement of the segments.

After the jacket has been deformed, the closing element is displaced axially in the opposite direction, as a result of which the segments release the jacket tube. The honeycomb body can then be transported away with the jacket tube. The deformation of the casing tube by the closing process does not necessarily have to take place in a single closing process. It is proposed to close and open the segments several times, whereby the casing tube is successively given its predetermined shape.

If the honeycomb body is to be rotationally symmetrical, it is proposed to twist the honeycomb body about its longitudinal axis in such a way that the twist angle is smaller than the arc angle of a segment. The segments exert a force on the jacket tube several times. This also results in an even more uniform plastic deformation. If the honeycomb body passes through several calibration stations, it is advantageous if the honeycomb body opens before at least one a calibration station following calibration station is rotated about its longitudinal axis, the angle of rotation being smaller than the arc angle of a segment.

The jacket tube of a honeycomb body produced with the device according to the invention maintains its strength properties since the fiber course in the material is not destroyed.

Further advantages and features of the device are explained on the basis of two preferred exemplary embodiments, without this being intended to restrict them to them. It shows:

1 shows a first embodiment of a device in cross section,

2 shows a second exemplary embodiment of a device in cross section,

3 is a view from below along the section line III-III,

4 enlarged a segment and a closing element,

Fig. 5 shows schematically a section of a transfer line and

Fig. 6 is a diagram.

The device comprises a base plate 17 and a base plate 18.

The base and base plates 17 and 18 are arranged at a distance from one another. Between the base plate 17 and the base plate 18 carriers 19 are arranged. The respective end of a carrier 19 is connected to the base plate 17 or the base plate 18.

Several segments 5 are arranged on the base plate 18. The segments 5 are essentially radially displaceable. A sliding plate 20 is arranged between the segments 5 and the base plate 18, on which the segments 5 slide. The slide plate 20 may e.g. B. by a releasable connection, in particular by a screw connection, with the base plate 18. The segments 5 can be guided in the slide plate 20 and / or the base plate 18. For this purpose, the segments 5 can have corresponding projections which engage in guide grooves. In any case, a relatively large sliding surface between base plate 18 and segments 5 prevents the segments from tilting.

Each segment 5 has a sliding surface 9 which is wedge-shaped in cross section. The segments 5 are surrounded by an annular closing element 7, which has a conical surface 8. The sliding surface 9 and the surface 8 slide on each other when the ring is axially displaced in accordance with the arrows V.

With a downward movement of the annular closing element 7, i. H. towards the base plate 18, the segments 5 are displaced radially inwards. By this movement they exert a force on the casing tube 2 of a honeycomb body 1 for exhaust gas purification and deform it plastically.

The annular closing element 7 has a circumferential collar 21 which is provided with through bores 22. In order to achieve a high strength of the annular closing element 7, stiffening ribs 23 distributed around the circumference of the annular closing element.

Screws 24 extend through the through bores 22, each of which is connected to a rod 11, which extends through the base plate 18 essentially parallel to the longitudinal axis 25. The opposite end of each rod 11 is connected to a plate 12. The connection can be made by screw connections 24, as shown. The plate 12 can be guided on the carriers 19. The plate 12 has a centrally formed threaded bore 26 into which a threaded pin 27 is screwed. The threaded pin 27 forms one end of a piston rod 28 of a cylinder-piston unit 13. The cylinder-piston unit 13 is fixedly arranged on the base plate 17.

2 shows a second exemplary embodiment of a device for producing a honeycomb body. The same parts of the device have the same reference numerals as in FIG. 1.

The device has a frame 30. In the frame 30, an annular chamber 31 is formed, which forms the cylinder of a cylinder-piston unit 14.

The chamber 31 is closed by means of a closure plate 32. The closure plate 32 is screwed to the frame 30 by means of screws 33. Between the frame 30 and the closure plate 32, a sealing ring - O-ring - is arranged. A piston 35 is arranged in the chamber 31 and has an annular cross section. A radial shaft sealing ring 36, 37 is arranged between the piston 35 and the wall of the chamber 31. Rods 11 are connected to the piston 35 and engage one end of the ring 7. Each rod 11 is connected to the piston 35 by means of a screw 38. Each rod 11 is slidably guided in a sliding bush 39. Each slide bush is arranged in a corresponding recess 40 in the frame 30.

As can be seen from FIG. 2, the device has eight segments 5. The segments 5 have recesses lying in one plane, in which a spring ring 41 or 42 is arranged.

A through opening 43 is formed below the segments 5. The through opening 43 has a cross section which essentially corresponds to the cross section of the inner contour formed by the segments. After a honeycomb body has been plastically deformed by the segments and the segments release the honeycomb body again, the honeycomb body can leave the device through the opening 43.

The closing element 7 has a conical surface. This surface 8 slides on the sliding surface 9 of the segment 5. The two surfaces 8 and 9 have different angles of inclination with respect to the longitudinal axis 25.

The inclination angles are chosen so that an open angle α is formed between the two surfaces 8 and 9, which lies in a range between 0.5 and 3 °. The pressure area within which the force from the closing element is applied to the segments 5 is shown in dashed lines in FIG.

A section of a transfer line 48 is shown schematically in FIG. The transfer line 48 comprises the calibration stations 43, 44, 46 and 47. A processing station 45 is arranged between the calibration stations 44 and 46. The transport direction of the honeycomb body is identified by T. The honeycomb bodies pass through the individual stations, calibration stations and processing stations one after the other. A calibration station comprises at least one device such as. B. is shown in Figure 2. The individual honeycomb bodies pass through the calibration stations 43, 44, 46 and 47 successively, each honeycomb body passing through the individual calibration stations being deformed while maintaining its transport direction T. In the processing station 45, the honeycomb body can be subjected to further processing, processing being understood in the broadest sense. This can also be a quality control of the honeycomb body. In the individual calibration stations 43, 44, 46 and 47, the radial reduction of the jacket tube can be the same or different in terms of amount. FIG. 6 schematically shows a diagram which shows the diameter of a rotationally symmetrical honeycomb body according to individual calibration stations K _j to K ₄ . As can be seen from the diagram, a significantly greater reduction in the diameter of the casing tube from D _j to D ₂ takes place in the calibration station K ₂ compared to the other calibration stations K _j , K ₃ or K ₄ . The representation of Figure 6 is schematic in nature. How large the reduction of the jacket tube should take place within the individual calibration stations also depends on which honeycomb body it is and for what purpose it is to be used. Reference symbol list:

1 honeycomb body

2 jacket tube

3 catalyst carrier body

4 channels

5 segments

6 outer contour

7 closing element

8 conical surface

9 wedge-shaped surface

10 actuators

11 rod

12 plate

13 cylinder-piston unit

14 cylinder-piston unit

15 pistons

16 piston rod

17 base plate

18 base plate

19 carriers

20 sliding plate

21 collar

22 holes

23 ribs

24 screws

25 longitudinal axis

26 threaded hole 27 threaded pin

28 piston rod

30 frame

31 chamber 32 closure plate

33 screws

34 sealing ring

35 pistons

36, 37 radial shaft seal 38 screw

39 sliding bush

40 recess

41 spring washer

42 spring washer 43 calibration station

44 calibration station

45 processing station

46 calibration station

47 Calibration station 48 Transfer line

T direction of transport

Claims

Claims:

1. Device for producing a honeycomb body (3) with a jacket tube (2) which comprises a plurality of radially displaceable segments (5) through which the jacket tube (2) is deformable,

characterized in that the segments (5) each have a wedge-shaped sliding surface (9) in cross-section, that at least one annular, axially displaceable closing element (7) surrounding the segments (5) is provided, which has at least one inclined surface ( 8) has that the surface (8) slides on the sliding surface (9) and that an actuating device (10) connected to the closing element (7) is provided.

2. Device according to claim 1, characterized in that at least four, preferably six, in particular eight, segments (5) are seen.

3. Apparatus according to claim 2, characterized in that the Vor¬ direction (1) has twelve segments (5).

4. Apparatus according to claim 1, 2 or 3, characterized in that the segments (5) deform the casing tube (2) directly.

5. Apparatus according to claim 1, 2 or 3, characterized in that the segments (5) can be detachably connected to tool segments.

6. The device according to claim 5, characterized in that the number of tool segments is equal to the number of segments (5).

s

7. Device according to one of claims 1 to 6, characterized gekenn¬ characterized in that the inclined surface (9) is partially in contact with the sliding surface (8), and that the two surfaces (8 and 9) to each other an angle of preferably 0 , 5 to 3 ° form.

0 8. Device according to one of claims 1 to 7, characterized gekenn¬ characterized in that the segments (5) are arranged radially inwardly against a spring force.

9. The device according to claim 8, characterized in that a least 5 spring element (41, 42) is provided, which with each

Segment (5) is connected.

10. The device according to claim 9, characterized in that the spring element (41, 42) is a spring ring. 0

11. Device according to one of claims 1 to 10, characterized gekenn¬ characterized in that the actuating device (10) at least two, preferably four, rods (11), a plate (12) and a cylinder-piston unit (13) The piston rod (28) of the cylinder-piston unit (13) with the plate (12), one end of each rod (11) with the plate (12) and the other end of each rod (11 ) is connected to the closing element (7).

12. The apparatus according to claim 11, characterized in that the plate (12) is slidably guided.

13. The apparatus of claim 11 or 12, characterized in that the segments (5) on a base plate (18) are arranged in that a bottom plate (17) is provided below the base plate (18) that between the base and the bottom plate (18 or 17) supports (19) are arranged so that on the base plate (17) the cylinder

Piston unit (13) is arranged that the base plate (18) has through bores through which the rods (11) extend, and that the plate (12) is optionally guided on the carriers (19).

14. The apparatus according to claim 13, characterized in that underneath the segments (5) in the base plate (18) is formed a bore into which a punch of an ejection device engages.

15. The apparatus according to claim 13, characterized in that the ejection device is a cylinder-piston unit.

16. Device according to one of claims 1 to 10, characterized gekenn¬ characterized in that it has a frame (30) in which an annular chamber (31) is formed, that in the chamber (31) a piston ( 32) is arranged, which is connected to rods (11) which engage the closure element (7).

17. Device according to one of claims 1 to 16, characterized in that a stop is provided which defines the axial position of the honeycomb body between the segments.

18. The apparatus according to claim 17, characterized in that the stop is formed by noses formed on at least two segments.

19. Device according to one of claims 1 to 18, characterized gekenn¬ characterized in that an outlet opening (43) is formed below the segments (5), the cross section of which corresponds essentially to the contour formed by the segments (5) in a radial plane.

20. A method for producing a honeycomb body (1) with a jacket tube (2), in which the honeycomb body (1) passes through at least one calibration station (43, 44, 46, 47) while maintaining its transport direction (T), in which the Jacket tube (2) is deformed.

21. The method according to claim 20, wherein the honeycomb body (1) successively passes through a plurality of calibration stations (43, 44, 46, 47).

22. The method according to claim 21, in which in the individual calibration stations (43, 44, 46, 47) only predetermined axial sections of the

Jacket tube (2) are deformed.

23. The method according to claim 21, in which the jacket tube (2) is successively deformed in the successive calibration stations (43, 44; 46, 47).

24. The method according to claim 22 or 23, wherein the degree of deformation of the casing tube (2) in the individual calibration stations (43, 44, 46, 47) is different.

25. The method according to one or more claims 21 to 24, in which the honeycomb body (1) passes through the individual calibration stations (43, 44, 46, 47) immediately one after the other.

26. The method according to one or more claims 21 to 24, in which the honeycomb body (1) is subjected to at least one further production step at least after a calibration station (43, 44, 46, 47).

27. A method for producing a honeycomb body (1) with a jacket tube (2), in particular according to one of claims 20 to 27, wherein the honeycomb body (1) with the jacket tube (2) is arranged in a space delimited by segments (5) is at least one annular, at least one inclined surface (8) having, closing element (7) is axially displaced, the surface (8) sliding on a sliding surface (9) of wedge-shaped cross-section on each segment (5), and the segments (5) are moved radially to the casing tube (2) and deform it.

28. The method according to claim 27, wherein the segments (5) are closed and opened several times.

29. A method for producing a rotationally symmetrical honeycomb body according to one of claims 20 to 28, in which the honeycomb body (1) before entering at least one calibration station (44, 46, 47) following a calibration station (43, 44, 46) and / or between two

Closing of the segments (5) is rotated about its longitudinal axis, the angle of rotation being smaller than the arc angle of a segment (5).