The device and method of manufacturing the cell element

 

(57) Abstract:

The invention relates to the purification of exhaust gases, primarily to catalytic converters. Cell element catalytic Converter is formed by many recruited at least one package to at least partially structured metal sheets forming multiple channels for the passage of fluid. The device is affecting each package forked holding device and the profile segments. Profile segments can be drawn together into a coherent form, and each core segment has a forming surface, together forming at a fully closed form of the outer contour of the manufactured cell element. At least two core segments can be moved in such a way that at least one portion of each of the shaping surface, adhering to the package describes when driving a corresponding outer contour of the cell element of the trajectory in the direction of the respective free end of the package. The invention eliminates the deformation of the packages and, accordingly, the individual sheets. 2 s and 5 C.p. f-crystals, 6 ill.

The invention relates the sa-carrier catalyst, many recruited at least one package to at least partially structured metal sheets.

To reduce the amount of harmful substances in exhaust gases, particularly in exhaust gases of motor vehicles, used catalytic converters. Housing-carriers in such catalytic converters can be made in the form of a metallic cellular elements. Such cell elements consist of multiple typed in the package at least partially structured metal sheets. From U.S. patent 4923109 known cell element, consisting of a packet of metal sheets, collapsed by twisting in opposite directions around the Central zone.

From the application WO 90/03220 known then the metal casing-carrier catalyst, which consists of at least partially structured metal sheets. This case-storage media includes at least three pack of metal sheets, with at least three of them folded in half along the respective fold lines in the Central zone of the cell element and in such a state folded into a roll by twisting in the opposite healthy lifestyles is key also known device for manufacturing such cell elements, includes rotating around its axis and acting on each package using a twisting fixture and mud in integral form of the profile segments. The inner loop of a closed shape corresponds to the outer contour of the cell element in it permanently curled condition. In order to ensure the folding roll packages, respectively, of the package around the Central zone of the core segments are moved toward the package in such a way that during the rotation of the fork twisting device package, respectively, adjacent packages(ut) to the edge of the core segments, and this region forms the arrester. At the end of the manufacturing process, the mold is completely closed, and the element with a honeycomb structure, thus, is given its final form.

Known devices contain two segments, moving towards each other and away from each other. In the process of closing the form, there is a danger that at least one profile segment will continue to move against the direction of movement of the plot package, which has yet to be collapsing into a roll. If the core segment will encounter such a site, it can lead to undesirable deformation of deformacia metal sheets affect the cell structure of the finished item. First, as a result of these deformations suffers the strength of the cell element, and secondly, there is a local change of cross-sections of the channels. The consequence of changing cross-sections of the channels is the uneven distribution of the exhaust gas inside the cell element that can affect the catalytic activity of the cell element.

Known cellular elements are mainly circular cross-section. The manufacture of cellular elements with other cross sections requires other methods of manufacture. One such method of manufacture is known from U.S. patent 4519120. According to this method, first roll in a roll cell element, and then it is deformed by using the appropriate tools.

Proceeding from the above, the present invention was based on the task to improve the known device and method for manufacturing cell element so that during the manufacturing process there is no risk of deformation of the packets, respectively, a separate metal sheets. In addition, it must be possible to manufacture the cell elements with non-circular cross-sections.

According to izaberete the additional embodiments of the device are presented in the dependent PP 2-5. The proposed methods of making cell element is specified in percentage points 6 and 7.

The proposed device for manufacturing cell element, in particular housing-carrier catalyst, many recruited at least one package to at least partially structured metal sheets forming multiple channels for the passage of the fluid is exerted on each package forked holding device and specialized segments that can be drawn together into a coherent form and each of which has a corresponding molding surface, together forming in closed form the outer contour of the manufactured cell element, and is characterized by the fact that there is at least two core segments that can move so that at least one portion of each of the shaping surface, adhering to the package describes when driving a corresponding outer contour of the cell element of the trajectory in the direction of the respective free end of the package. Due to the fact that at least one portion of each of the shaping surface describes when the movement corresponding to the outer contour Soto is in store with a plot of the profile segment, deformed in such a way that in the final state of forming the package is attached to the specified outer contour of the manufactured cell element. Due to the fact that the trajectory is directed to the corresponding free end of the package, the deformation of the individual layers of metal sheets, respectively, packages, unlike the above prior art, is prevented because of the profile segments bend parts of the package, giving it its final form. Depending on the given outer contour of the manufactured cell element can be selected corresponding to the number of profile segments, performing the folding roll packages, respectively, of the individual layers of sheet metal. Preferably there are two specialized segments that can move in the same directions. It should be emphasized that the length of a section of the shaping surface of the profile segment while driving may be subject to change. It depends, first, on the motion profile segment and, secondly, from the outer contour of the manufactured cell element.

The preferred embodiment of the device in which to profileget in pairs against each other. The movement of the core segments is, in particular, synchronously. However, this condition is not strictly necessary. Enough to the speed of individual movements of the profile segments varied so that the core segments during the manufacture of the cell element not collide with each other.

According to another preferred variant it is proposed to complete the form so that she had at least one moved radially inward and radially outward of the profile segment, which serves as a closing segment. With this closing segment form in the final state is closed, giving the cell element in its final form.

According to the present invention a method of manufacturing a cell element with multiple channels for the passage of fluid from a set of at least partially structured metal sheets. According to this method, first type in the package set of at least partially structured metal sheets. The package is placed in an open form and using a holding device to hold it in the form in the Central zone. The ends of the package are of CE is thus that at least one portion of each of the shaping surface is in contact with the package. After that the profile segments move along the trajectory corresponding to the outer contour of the cell element, so that at least one portion of each of the shaping surface permanently attached to the package. Upon reaching the required degree of curl packages completing the form.

It is also proposed a method of manufacturing a cellular elements, which are gaining in multiple packages multiple at least partially structured metal sheets. Each package is folded in half along the respective fold lines. The packages are placed in an open form and using a holding device to hold them in shape in the Central zone. Then at least two core segments are moved from their original positions so that at least one portion of each of the shaping surface of the core segment is in contact with the corresponding package. Profile segments move along the trajectory corresponding to the outer contour of the cell element, so that the area of each of the shaping surface of the profile segment constantly p. and method according to the invention enables the manufacture of cellular elements with the cross-section, other than round. For example, it is possible to make cell elements with an oval cross-section or in the form of "races racing" tracks without requiring deformation of the packets, respectively, of sheet metal. The device and method according to the invention enables the manufacture of cellular elements of uniform patterns.

Other advantages and features of the device and method are explained in more detail below, the exemplary embodiment with reference to the accompanying drawings, showing

in Fig. 1 is a schematic top view of the device for production of honeycomb element with the form open,

in Fig. 2-4 - different positions of the movable core segments,

in Fig. 5 is a partially closed form and

in Fig. 6 is a top view of a closed shape.

The device has a forked holding device which holds the package 1 in the Central zone of the form. The package 1 is folded into a roll around a mandrel 13, 14 of the holding device. The form has four core segments 2, 3, 4 and 5. Together they form a closed up the whole form 10. Each profile segment 2-5 has a forming surface 6, 7, 8 and 9, which together in a closed-form 10 form the I in the direction radially inward and radially outward.

In Fig. 2 core segments 2 and 4 are bonded to the package 1. Section 11 of the shaping surface 6 of the profile segment 2, respectively, of section 12 of the shaping surface 8 of the profile segment 4 is attached to the package 1. The exhaust from the mandrel 14, 13 respectively and extending from the forms section of the package is bent according to the curvature of the portion 11, respectively 12. In Fig. 3 core segments 2 and 4 are shown in the position which they occupy after they turn 30o. During rotation in the direction of the arrow R happened deformation the next section of the package. The rotation of the profile segments 2 and 4 when this happened so that the portion 11, respectively 12 core segments 2, 4 respectively permanently adjoined to the package. As a result, subsequent rotation of the profile segments 2 and 4 of the latter in the position shown in Fig. 4. Profile segments 2 and 4 were rotated from their original position on the 90o. As most clearly seen in Fig. 4, section 11, respectively 12 a forming surface 6, 8 respectively, significantly more of the same section shown in Fig. 2 and 3. In another turn of profile segments 3 and 4 of the package is given to theobecause cell element has a mirror-symmetrical design. The movement of both core segments 2 and 4 occurred synchronously. Upon reaching the core segments 2 and 4 are depicted in Fig. 5 the provisions of both core segments 3 and 5 are fed radially inwards towards the mobile element 16. The form 10 is not yet fully closed, as shown in Fig. 5. Subsequent supply of the individual profile segments 2-5 form 10 is fully closed, as shown not in Fig. 6.

1. Device for manufacturing cell element, in particular housing-carrier catalyst, many recruited at least one package (1) at least partially structured metal sheets forming multiple channels for the passage of a fluid medium having affecting each package (1) forked holding device and profile segments(2, 3, 4, 5), which can be drawn together into a coherent form (10) and each of which has a forming surface(6, 7, 8, 9), together forming a fully zamknutoi the form (10) of the outer contour of the manufactured cell element, wherein there is at least two core segments (2, 4), which can peremeshatsya (1), when the movement describes a corresponding outer contour of the cell element of the trajectory in the direction of the respective free end of the package (1).

2. The device under item 1, characterized in that the profile segments (2, 4) can move in the same direction (R).

3. The device under item 1 or 2, characterized in that the profile segments (2, 4) in their original position are preferably in pairs, facing each other.

4. Device according to any one of paragraphs.1 to 3, characterized in that the profile segments (2, 4) can be moved synchronously.

5. Device according to any one of the preceding paragraphs, characterized in that the form (6) has at least one moved radially inward and radially outward of the profile segment (3, 5), which serves as a trailing segment.

6. A method of manufacturing a cell element with multiple channels for the passage of fluid from a set of at least partially structured metal sheets, in which trying to enter at least one packet (1) a set of at least partially structured metal sheets, each package (1) is placed in an open form (10) and using a holding device to hold it together, that at least one segment (11, 12) of each of the shaping surface (6, 8) is in contact with the package (1), and then moved along a path corresponding to the outer contour of the cell element, until it reaches the specified degree of twisting, and finally completing the form (10).

7. The method according to p. 6, which are gaining a lot of packages (1) a set of at least partially structured metal sheets and each package is folded in half along the respective fold lines, at least two core segments (2, 4) move from their original positions so that at least one segment (11, 12) of each of the shaping surface (6, 8) is in contact with the package (1), and then moved along a path corresponding to the outer contour of the cell element, until it reaches the specified degree of twisting, and finally completing the form (10).

 

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