Casting housing for a casting system and method for producing a filter element
By using independently movable cover part in the casting shell to form a sealing surface, the problem of filter element sealing and end disc molding in the prior art is solved, and efficient and flexible filter body casting and sealing surface production is achieved. Simplifies production processes and reduces costs.
Patent Information
- Application Number
- CN202380031388.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-03-28
- Filing Date
- 2023-02-13
- Publication Date
- 2024-12-13
AI Technical Summary
Prior art In the production of filter elements, it is difficult to effectively mold seals and end discs, especially at the height limit of the filter body, and the production process is complex and not cheap.
With a casting housing having an independently movable, including a receiving housing and at least two cover portions, the cover portion exposes the groove in the first position, covers the groove in the second position and forms a sealing surface through the cover portion during casting Independent movement and locking, enabling efficient molding of seals and end discs.
The production process is simplified, the demand for individual top shells is reduced, the casting flexibility and sealing of the filter body is improved, the production cost is reduced, and the sealing surface production of the filter body of any height is realized.
Smart Images
Figure CN119136890A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a casting housing for producing a filter element for filtering a fluid having a filter body, a casting device having a casting housing, and a method for producing a filter element for filtering a fluid having a filter body by casting the housing. Background Art
[0002] Typically, the cast housing for attaching the end disc and / or the seal to the filter element comprises two separate halves or parts, a bottom housing and a top housing, which are positioned one above the other. The two housings are sprayed or wetted with a release agent, respectively, so that the cast or foamed end disc and / or seal, for example of polyurethane (PUR), can be easily removed therefrom after casting without leaving any PUR residues.
[0003] JP2017177369A discloses a device for producing a filter element, comprising: a molding tool having a plurality of separate molds, which are clamped to form a cavity so that a resin material is foamed in the cavity so as to integrally form a sealing portion on the outer circumferential edge of the filter material. The molding tool is arranged between the cavity and the gap between the surfaces of the plurality of separate molds during the foaming of the resin material, and enables air to pass from the cavity to the gap. In addition, the device includes an adjustment element for adjusting the transfer of the resin material during the foaming.
[0004] Furthermore, DE 69100895 T2 discloses a device for producing an air filter, comprising a bottom cast housing and a top cast housing which are pivotably connected to each other. The top cast housing comprises a frame which, in the closed state of the device, encloses a filter body placed on the bottom cast housing. The frame comprises four side walls which surround the filter body on all sides, wherein the entire frame can be moved relative to the base of the top cast housing by a drive device. Summary of the invention
[0005] The object of the present invention is to provide an improved cast housing for producing a filter element for filtering fluids having a filter body with a seal and / or an end disk integrally formed thereon.
[0006] A further object is to provide a casting installation having such an improved casting housing.
[0007] A further object is to provide a method for producing a filter element for filtering fluids with a filter body and molded seals and / or end disks by means of such an improved cast housing.
[0008] According to one aspect of the invention, the above object is achieved by a cast housing having the features of claim 1 .
[0009] A further object is achieved by a casting installation having the features of claim 10 .
[0010] A further object is achieved by a method for producing a filter element for filtering a fluid having the features of claim 14 .
[0011] Advantageous embodiments and advantages of the invention emerge from the additional claims, the description and the drawings.
[0012] According to one aspect of the invention, a casting housing is provided for producing a filter element for filtering a fluid, the filter element having a filter body and a seal and / or an end disc at least partially surrounding the filter body. The casting housing comprises: a receiving housing for receiving the casting material in a groove, the receiving housing having a support surface for the filter body; and a cover having at least two cover parts, the at least two cover parts being arranged to be movable independently of each other relative to the receiving housing, the at least two cover parts in a first position revealing the groove and in a second position, when the filter body is inserted as intended, substantially covering the groove.
[0013] The bottom side of at least two cover parts facing the cavity formed by the groove in the second position is realized as a sealing surface or functional surface for forming a seal or end disc, so that an upper sealing surface or functional surface at the end disc and / or seal can advantageously be realized within the cast housing.
[0014] By means of the cast housing, the end disk and / or the seal can be molded onto the filter body, in particular foamed onto it.The filter body is preferably realized as a folded bellows of the filter medium folded into a zigzag shape.
[0015] In this context, "movable independently of one another" means in particular that the cover parts can respectively independently of one another perform movements with different degrees of freedom of movement, for example respectively different translational and / or rotational movements. However, in this context, it is not excluded that there is a kinematic coupling between the movements of the individual cover parts, for example via a common drive.
[0016] It is important for the invention that the at least two cover parts are arranged to be movable independently of one another relative to the receiving housing, since in this way the casting process of very tall filter bodies, in particular folded filter bodies with large fold heights, is significantly facilitated. With casting devices known from the prior art which comprise a top housing pivotably connected to a bottom housing, this is no longer possible to start at a certain height limit of the filter body, since the top housing would collide with the filter body during pivoting. On the other hand, the cast housing according to the invention makes it possible to mold seals and / or end discs to filter bodies with any desired height dimensions and is also characterized by a very compact configuration.
[0017] A single casting shell is proposed, which comprises one or more pivotable or differently movable parts. These pivotable or differently movable parts essentially form a "top shell" in the folded state. Advantageously, these parts can be pivoted by up to 180°, so that the mold release agent can be applied optimally. During the casting process, the pivotable or differently movable parts can be locked, for example, by a mechanical latching mechanism or by means of a magnetic device, in order to ensure the foam counterpressure during the casting process. In this way, upper sealing surfaces or functional surfaces at the PUR end disc and / or the seal can advantageously be realized in the casting shell.
[0018] In several embodiments, an arrangement with slidable parts can also be provided. However, in such an embodiment, the application of the release agent is slightly more complicated.
[0019] The receiving housing and the at least two cover parts enclose a cavity, which is formed by the groove when the filter body is placed on the receiving housing as intended, and is used to attach a seal extending at least partially in the circumferential direction to the outer edge of the end face of the filter body. The seal can be produced, for example, by casting, foaming or foam-molded plastic material, in particular PUR. Preferably, the seal is configured to extend completely in the circumferential direction.
[0020] The proposed cast shell has the advantage that no separate cast top shell is required, thereby simplifying the handling and / or logistics in the production line. Furthermore, only a single process for applying a release agent in the cast shell is required, thereby speeding up production. Advantageously, functional surfaces and / or sealing surfaces at existing equipment can also be realized, which are not designed for a cast shell with a separate top shell. In this way, the production process can be simplified and designed to be less expensive.
[0021] According to an advantageous embodiment of the cast housing according to the invention, the at least two cover parts can be supported at the receiving housing to be movable independently of each other. In particular, in this context, each cover part comprises its own freedom of movement relative to the receiving housing, which is different from the other cover parts.
[0022] According to an advantageous embodiment of the casting housing, the groove can comprise a groove wall at its inner side which is lower than the groove wall at the outer side of the groove, and the groove comprises a support surface for the filter body at the inner groove wall. In particular, in this context, the support surface for the filter body can be realized horizontally. In this way, the filter body can be safely placed on the receiving housing for the casting process.
[0023] Advantageously, the groove can be designed to extend circumferentially around the receiving housing. The filter body placed on the support surface is relative to the internal sealing groove so that the casting material remains in the cavity formed by the groove and the filter body. The casting housing can be designed, for example, as an annular or rectangular shape. For example, the casting housing can be implemented as a cup with a bottom.
[0024] According to an advantageous embodiment of the cast housing, the at least two cover parts can each be arranged at the receiving housing to be pivotable about its own axis, which is arranged parallel to the support surface for the filter body. In particular, the at least two cover parts can each be pivoted 180°. In the open state, the cover parts can advantageously be sprayed or moistened with a release agent so that the filter element with the foamed seal can be safely removed. In several embodiments, in this case, the pivot axes of the two cover parts can extend in parallel but be spaced apart from each other. However, the pivot axes of the two cover parts never coincide.
[0025] According to an advantageous embodiment of the casting housing, the at least two cover parts can be arranged at the receiving housing to slide parallel to the support surface for the filter body in different directions, respectively. Alternatively, an arrangement with a slidable component can also be provided. Such an embodiment is particularly advantageous when the shape of the filter element does not provide a structural space for closing the cover parts. In several embodiments, the directions in which the two cover parts can slide parallel to the support surface can be oriented parallel to each other, or can point in different directions.
[0026] Advantageously, a combination of pivotable and slidable cover parts is also possible.
[0027] According to an advantageous embodiment of the cast housing, there may be a fastening device, by means of which the at least two cover parts can be fixed in the second position. In particular, the fastening device may be a mechanical fastening device and / or a magnetic fastening device. During the casting process, a locking of the closed parts may be achieved, for example, by a mechanical latching mechanism or by means of a magnetic device, in order to ensure a foam counterpressure during the casting process. In this way, an upper sealing surface or functional surface at the PUR end disc and / or the seal may advantageously be achieved in the cast housing.
[0028] According to an advantageous embodiment of the cast housing, in the second position, the at least two cover parts can provide a free space in the cast housing which is larger than the cross section of the filter body intended to be inserted into the cast housing. In this way, the intended inserted filter body can be spaced apart by a gap relative to the closed cover parts. In this way, the casting material can advantageously foam onto the filter body and form a certain protrusion between the actual sealing surface and the filter body.
[0029] According to an advantageous embodiment of the cast housing, the side faces of the at least two cover parts, which in the second position abut against the outside of the filter body, can be configured in a shape complementary to the outside of the filter body. In this way, when the filter body is inserted, during the casting process, the at least two cover parts can advantageously seal the cavity formed by the groove against the filter body.
[0030] According to an advantageous embodiment of the cast housing, in the second position, the mutually adjacent end faces of the at least two movable cover parts can abut each other tightly and sealingly. In this way, when the filter body is inserted, during the casting process, the cavity formed by the groove can be reliably sealed against the filter body in the circumferential direction.
[0031] According to a further aspect of the invention, a casting device with a casting housing is provided, wherein the casting housing comprises: a receiving housing for receiving casting material in a groove, the receiving housing having a support surface for a filter body; and a cover having at least two cover parts, the at least two cover parts being arranged to be movable independently of each other relative to the receiving housing, the at least two cover parts exposing the groove in a first position and substantially covering the groove in a second position, when the filter body is inserted as intended, and wherein the bottom side of the at least two cover parts facing the cavity in the second position is configured as a sealing surface or functional surface for forming a seal. The casting device also comprises a metering device, by means of which the casting material can be filled into the groove of the receiving housing of the casting housing.
[0032] With the proposed casting device having a casting housing, an upper sealing surface or functional surface can be realized in an advantageous manner at the PUR end disc and / or the seal within the casting housing. The at least two movably arranged cover parts are configured to be pivotable or slidable independently of one another.
[0033] When the filter body is placed on the receiving housing as intended, the receiving housing and the at least two cover parts close the cavity formed by the groove, which is used to apply a seal extending at least partially in the circumferential direction at the outer edge of the end face of the filter body. The seal can be produced, for example, by casting, foaming or foam molding of a plastic material, in particular PUR.
[0034] The proposed casting device has the advantage that no separate casting top shell is required, thereby simplifying the handling and / or logistics in the production line. Furthermore, only a single process for applying a release agent in the casting shell is required, thereby speeding up production. Advantageously, functional surfaces and / or sealing surfaces at existing plants can also be realized, which are not designed for casting shells with a separate top shell. In this way, the production process can be simplified and designed to be less expensive.
[0035] According to an advantageous embodiment of the casting device, the at least two cover parts can be designed to tightly abut the filter body inserted into the casting housing as intended. In particular, the at least two cover parts can be designed to at least partially tightly abut. In this way, during the casting process, in the case of the filter body inserted, the at least two cover parts can advantageously seal the cavity formed by the groove against the filter body.
[0036] According to an advantageous embodiment of the casting device, the at least two cover parts can be designed to be spaced apart from the filter body intended to be inserted into the casting housing by a gap. In particular, the at least two cover parts can be designed to be spaced apart from the filter body by a gap at least partially. In this way, the casting material can advantageously foam onto the filter body and form a certain protrusion between the actual sealing surface and the filter body.
[0037] According to an advantageous embodiment, the casting device can include a clamping device for fixing the filter body in the casting housing during the casting process. In this way, it is possible to prevent the filter body from floating up due to the foaming casting material during the casting process and thus prevent excessive tolerances from occurring during the casting process.
[0038] According to another aspect of the invention, a method for producing a filter element for filtering a fluid with a filter body by a casting housing is provided, wherein the casting housing comprises: a receiving housing for receiving a casting material in a groove, the receiving housing having a support surface for the filter body; and a cover having at least two cover parts, the at least two cover parts being movable independently of each other relative to the receiving housing, the at least two cover parts exposing the groove in a first position, and in a second position, when the filter body is inserted as intended, substantially covering the groove, and wherein the bottom side of the at least two cover parts facing the cavity in the second position is configured as a sealing surface or functional surface for forming a seal. In this context, in the first position of the cover part, the filter body is placed on the receiving housing as intended with the end face, so that the outer edge of the filter body at least partially protrudes into the groove of the casting housing. The at least two cover parts are moved independently of each other into the second position, and in the second position, the receiving housing and the at least two cover parts close the cavity formed by the groove.
[0039] Advantageously, the cavity serves to apply an at least partially circumferentially extending seal to an outer edge of an end face of the filter body when the filter body is placed as intended on the receiving housing.
[0040] When the filter body is placed on the receiving housing as intended, the receiving housing and the at least two covers partially enclose the cavity formed by the groove, which is used to apply a seal extending at least partially in the circumferential direction to the outer edge of the end face of the filter body. The seal can be produced, for example, by casting, foaming or foam molding of a plastic material, in particular PUR.
[0041] The proposed method with the aid of a cast housing has the advantage that no separate cast top housing is required, thereby simplifying handling and / or logistics in the production line. Furthermore, only a single process for applying a release agent in the cast housing is required, thereby speeding up production. Advantageously, functional surfaces and / or sealing surfaces at existing equipment can also be realized, which are not designed for a cast housing with a separate top housing. In this way, the production process can be simplified and designed less expensively. In addition, since the cover is removed in the transverse direction, the seal can be applied to an inclined end face or an inclined filter bellows.
[0042] According to an advantageous embodiment, the method may comprise: filling the recess, in particular with a foamable casting material, in particular polyurethane; moving the at least two cover parts from a first position to a second position; inserting the filter body; forming a seal at the outer edge of the end face of the filter body; moving the at least two cover parts back to the first position; removing the filter body from the support surface of the receiving housing. In this context, forming the seal occurs automatically by foaming of the casting material in the recess. In this way, the seal of the filter element can be produced very efficiently and cost-effectively, because handling of the cast housing, in particular with the movable cover parts, is significantly easier and, in addition, the sealing surface or functional surface can be realized very reliably.
[0043] According to an advantageous embodiment of the method, the inner surface of the groove and the bottom side of the at least two cover parts can be provided with a release agent before the filter body is placed on the receiving housing. In this way, the seal of the filter element can be produced very efficiently, because the application of the release agent is facilitated by the movable cover part in particular before the actual casting process.
[0044] According to an advantageous embodiment of the method, after the filter body has been placed on the receiving housing, the filter body can be fixed with a hold-down device, which is removed again before the filter body is removed from the receiving housing. In this way, it is possible to prevent the filter body from floating up during the casting process due to the foaming casting material and thus prevent excessive tolerances from occurring during the casting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0045] Further advantages are derived from the following description of the drawings. In the drawings, embodiments of the invention are illustrated. The drawings, the description and the claims contain many features in combination. A person skilled in the art will consider these features expediently and individually and combine them into expedient further combinations. In an exemplary manner:
[0046] Figure 1 A plan view of a casting apparatus having a casting shell according to an embodiment of the present invention;
[0047] Figure 2 A plan view of a casting apparatus having a casting housing according to another embodiment of the present invention;
[0048] Figure 3 Passing through Figure 2 A longitudinal section of a casting device having a filter element and a partially foamed seal placed thereon;
[0049] Figure 4 Passing through Figure 2 A longitudinal section of a casting device having filter elements and foam seals with different configurations placed on the casting device;
[0050] Figure 5 A plan view of a casting apparatus having a casting housing according to another embodiment of the present invention;
[0051] Figure 6 Passing through Figure 5 A longitudinal section of a casting device having a filter element placed thereon; and
[0052] Figure 7 Passing through Figure 5 Longitudinal section of a casting device on which a filter element and a foam seal are placed. DETAILED DESCRIPTION
[0053] In the drawings, the same reference numerals are used to identify the same or same type of components. The drawings show examples only and should not be construed as limiting.
[0054] Directional terms (such as "left", "right", "top", "bottom", "front", "back", "after", etc.) used below are only used for a better understanding of the drawings and are by no means meant to be limiting in general. The illustrated components and elements, their design and use may vary according to the considerations of those skilled in the art and be adapted to the respective application.
[0055] Figure 1 A plan view of a casting apparatus 100 having a casting housing 40 according to an embodiment of the present invention is shown. Figure 2 A plan view of a casting device 100 having a casting housing 40 according to another embodiment of the present invention is shown; and Figure 3 In the figure, a filter element 10 and a partially foamed seal 20 are placed through the Figure 2 A longitudinal cross section of a casting apparatus 100 is shown.
[0056] The casting device 100 is used to produce a filter element 10 for filtering a fluid with a filter body 12 and for this purpose comprises a casting housing 40. The casting housing 40 comprises a receiving housing 42 for receiving the casting material in a groove 50, the receiving housing 42 having a support surface 56 for the filter body 12. In addition, the casting housing 40 comprises a cover 60 having at least two cover parts 62, 64, which are arranged to be independently movable and expose the groove 50 in a first position 90 and substantially cover the groove 50 in a second position 92, when the filter body 12 is inserted as intended.
[0057] In principle, the casting housing 40 can be configured in an annular or rectangular form. Figures 1 to 7 In the embodiments shown in FIG. 2 , the casting housings 40 are each designed in a rectangular shape.
[0058] Figure 1 The embodiment in comprises two cover parts 62, 64, which are arranged to be independently movable and are realized in a U-shape. The cover parts 62, 64 can be pivoted around axes 70, 72, preferably pivoted by 180°, so that they can be fully opened. The axes 70, 72 are parallel to each other, but spaced apart from each other. Figure 1 , a second position 92 is shown, in which the cover parts 62, 64 are located on the receiving housing 42 in a closed state. In the second position 92, the two cover parts 62, 64 are respectively abutted against each other with the end faces 82 and 85, 83 and 84 and are tightly closed, so that a tightly sealed cover 60 is formed on the receiving housing 42.
[0059] Figure 2 The embodiment in comprises four movably arranged cover parts 62, 64, 66, 68, which are realized in a trapezoidal shape. The cover parts 62, 64, 66, 68 can be pivoted around axes 70, 71, 72, 73, preferably pivoted 180°, so that they can be fully opened. In this context, a pair of axes (i.e. axis 70 and axis 71 and axis 71 and axis 73) can be pivoted parallel to each other, but wherein these parallel axes are spaced apart from each other. Each of the cover parts 62, 64, 66, 68 can be pivoted around its own axis 70, 71, 72, 73. In Figure 2, a second position 92 is shown, in which the cover parts 62, 64, 66, 68 are located in a closed state on the receiving housing 42. In the second position 92, the cover parts 62, 64, 66, 68 are abutted against each other with the end faces 82 and 89, 83 and 86, 84 and 87, 85 and 88 and are tightly closed, so that a tightly sealed cover 60 is formed on the receiving housing 42.
[0060] exist Figure 3 , a casting device 100 is shown, wherein the filter body 12 is placed on the support surface 56 of the receiving housing 42 and is formed, for example, by a folded filter medium 14. In a longitudinal section, details of the mechanism by which the movable cover elements 62, 64 interact with the recess 50 of the receiving housing 42 are shown.
[0061] exist Figure 3 On the left side, the cover portion 62 is shown in a first position 90, i.e., in an open state; and Figure 3 On the right side of the cover portion 64 is shown in the second position 92, ie in the closed state. In this context, the groove 50 has been filled with the foam seal 20.
[0062] The groove 50 comprises at its inner side a groove wall 52 which is lower than at its outer side a groove wall 54. At the inner groove wall 52, a support surface 56 for the filter body 12 is formed. In this context, the support surface 56 for the filter body 12 is preferably realized horizontally.
[0063] The groove 50 can be realized to extend circumferentially around the receiving housing 42. In this context, the filter element 10 placed on the support surface 56 seals the groove 50 inwardly, since the filter element 10 protrudes with its outer edge 18 into the groove 50.
[0064] The cast housing 42 may advantageously be configured like a cup with a bottom.
[0065] The two cover parts 62, 64 are each arranged at the receiving housing 42 so as to be pivotable independently of one another, in particular by approximately 180°, about their own axes 70, 72 which are arranged parallel to the support surface 56 for the filter body 12. The axes 70, 72 are spaced apart from one another.
[0066] Advantageously, there may be a fastening device (not shown) by means of which at least two cover parts 62, 64 can be fixed in the second position 92. Such a fastening device can be implemented, for example, as a mechanical fastening device, in particular as a latch mechanism, or as a magnetic fastening device. In this way, the cover parts 62, 64 can be fixed in the closed state.
[0067] The side faces 74, 76 of the two cover parts 62, 64, which are adjacent to the outer side 26 of the filter body 12 in the second position 92, are configured in a shape complementary to the outer side 26 of the filter body 12. In this way, the two cover parts 62, 64 can tightly seal against the filter body 12. In particular, they can at least partially tightly seal against the filter body 12. In this way, the casting material is retained in the cavity 46 formed by the groove 50 and the filter body 12.
[0068] In an alternative embodiment, in the second position 92, the two cover parts 62, 64 can provide a free space in the cast housing 40 which is larger than the cross-section of the filter body 12 to be inserted into the cast housing 40. In this way, the filter body 12 to be inserted is spaced apart by a gap 48, in particular locally (in certain areas), relative to the cover parts 62, 64.
[0069] In the second position 92 , when the closed cover parts 62 , 64 are located on the receiving housing 42 and the filter body 12 is inserted, the groove 50 together with the respective cover part 62 , 64 forms a closed cavity 46 , into which the casting material can fill and foam.
[0070] In this context, the bottom sides 78, 80 of the two cover parts 62, 64 facing the cavity 46 in the second position 92 are realized for forming the sealing surface 22 when the seal 20 is applied. In this way, an upper sealing surface or functional surface can be advantageously realized at the PUR end disc and / or the seal 20 within the cast housing.
[0071] According to the proposed method, in a first position 90 of the cover parts 62, 64, the filter body 12 is placed with the end face 16 as intended on the receiving housing 42, so that the outer edge 18 of the filter body 12 at least partially protrudes into the recess 50 of the casting housing 40. Then, the two cover parts 62, 64 are moved into the second position 92. In this way, in the second position 92, the receiving housing 42 and the two cover parts 62, 64 close the cavity 46 formed by the recess 50.
[0072] Thereafter, the groove is filled with a casting material, in particular polyurethane. The casting material foams and in this way forms a circumferentially extending seal 20 at the outer edge 18 of the end face 16 of the filter body 12. Filling with the casting material can be achieved in particular with the aid of a metering device so that the correct amount of casting material is always filled into the groove.
[0073] After the casting process is complete, the two cover portions 62 , 64 are moved to the first position 90 and the filter body 12 is removed from the support surface 56 of the receiving housing 42 .
[0074] Advantageously, before placing the filter body 12 on the receiving housing 42, the inner surfaces 58, 59 of the groove 50 and the bottom sides 78, 80 of at least the two cover parts 62, 64 are provided with a release agent, so that the filter element 10 with the finished seal 20 can be removed more easily later. Spraying or wetting with the release agent is performed with the cover parts 62, 64 open in the first position 90. Figure 3 In this respect, a release agent spraying device 32 is schematically illustrated.
[0075] Due to the gap 48 formed between the cover parts 62 , 64 and the outer side 26 of the filter body 12 , the casting material can emerge at the outer side 26 when foaming and form the bulge 24 .
[0076] At the top corner of the filter body 12, a protective edge 28 can be seen, which can be attached in a conventional manner. For example, the protective edge 28 can be made of plastic material and be injection molded, glued or foamed. The protective edge 28 can be designed into a strip shape, or a plurality of protrusions can also be included. Since the cover 60 of the casting shell 40 can be moved to the side, and it is not necessary to remove in an upward direction as in a conventional casting shell, there is no restriction on the shape and size of the protective edge 28, particularly the extension in the radial direction. Therefore, for example, it is possible that when projected onto the seal 20, the protective edge 28 extends to the sealing surface 22 or exceeds the sealing surface 22.
[0077] Figure 4 Shown through the Figure 1 1 is a longitudinal section of a casting device 100 on which filter elements 10 and foam seals 20 having different configurations are placed.
[0078] exist Figure 4 In the illustration in FIG. 2 , the seal 20 has been foamed to extend in the circumferential direction.
[0079] The filter element 10 comprises a filter body 12 which is inclined relative to an end face 16. The cast housing 40 functions as Figure 3 However, the cover portions 62, 64 are adapted to tilt the outer side 26 of the filter body 12 so that the side faces 74, 76 are formed parallel to the outer side 26. In this way, a uniform gap 48 between the side faces 74, 76 and the outer side 26 can be maintained.
[0080] exist Figure 5 , a plan view of a casting apparatus 100 having a casting shell 40 according to another embodiment of the present invention is shown.
[0081] The two cover parts 62, 64 are arranged at the receiving housing 42 to be slidable in different directions, respectively, parallel to the support surface 56 for the filter body 12. The cover parts 62, 64 are shown in a first position 90 and can be displaced in the direction of the arrow to a second position 92. In this context, the end faces 82 and 85 or 83 and 84 of the two cover parts 62, 64 abut against each other in a tightly sealing manner.
[0082] Since the separation of the two cover parts 62 , 64 is formed on the diagonal of the rectangular cast housing 40 , only a small displacement stroke is required to move the two cover parts 62 , 64 between the first position 90 and the second position 92 .
[0083] You can also Figure 1 and Figure 2 As in the first embodiment in FIG. 1 , a mechanism for locking or latching the two cover parts 62, 64 is provided. The movement of the two cover parts 62, 64 between the first position 90 and the second position 92 can be achieved, for example, by hand. Alternatively, however, a drive unit can also be provided.
[0084] In an alternative embodiment not shown, a combination of the two variants with a pivotable and slidable cover part is also possible.
[0085] Figure 6 Shown through the Figure 5 A longitudinal section of a casting device 100 with a filter element 10 placed thereon.
[0086] like Figure 4 As in the embodiment of FIG. 1 , the filter element 10 includes a filter body 12 inclined relative to the end surface 16. After the filter body 12 is placed on the receiving housing 42, the filter body 12 is fixed with a clamping device 30 so that the filter body 12 can be prevented from floating up with the casting material during the casting process.
[0087] The cast housing 40 is shown with the cover parts 62, 64 in the first position 90. The recess 50 is exposed. It can be seen that the side faces 74, 76 of the cover parts 62, 64 are adapted in shape to the inclined outer side 26 of the filter body 12 and are realized parallel thereto.
[0088] Figure 7 Shown through the Figure 5 1 shows a longitudinal section of a casting device 100 on which a filter element 10 and a foam seal 20 are placed.
[0089] A foaming process of the casting material has taken place, forming the seal 20. At both sides of the filter body 12, in the gap 48 between the side faces 74, 76 of the cover parts 62, 64 and the outer side 26 of the filter body 12, a projection 24 of casting material is formed, which extends upwardly along the outer side 26.
[0090] Before removing the filter body 12 from the receiving housing 42 , the hold-down device 30 can conveniently be removed again.
[0091] According to the illustrated embodiment in which the seal extends circumferentially around the end face of the filter body, an end disc can also be produced for closing the open end face of a filter body in the form of a hollow body. The filter body is, for example, a folded bellows, the end folds of which are connected to each other, thus forming a hollow body. The filter body can be realized in a cylindrical, for example, cylindrical or conical shape. The end disc can be realized in an open or closed manner and can at the same time be designed to form a seal relative to a housing part.
[0092] Reference numerals
[0093] 10 Filter element
[0094] 12 Filter body
[0095] 14 Filter media
[0096] 16 End face
[0097] 18 Outer edge
[0098] 20 Seals
[0099] 22 Sealing surface
[0100] 24 Protrusion
[0101] 26 Outer side
[0102] 28 Protective edge
[0103] 30 Clamping device
[0104] 32 Release agent spraying equipment
[0105] 40 Casting shell
[0106] 42 receiving housing
[0107] 46 chambers
[0108] 48 Gap
[0109] 50 grooves
[0110] 52 Inner side of groove wall
[0111] 54 Outer side of groove wall
[0112] 56 Support surface
[0113] 58 Inner surface
[0114] 59 Inner surface
[0115] 60 Cover
[0116] 62 Cover part
[0117] 64 Cover part
[0118] 66 Cover part
[0119] 68 Cover part
[0120] 70 Axis
[0121] 71 Axis
[0122] 72 Axis
[0123] 73 Axis
[0124] 74 Side
[0125] 76 Side view
[0126] 78 bottom side
[0127] 80 bottom side
[0128] 82 End face
[0129] 83 End face
[0130] 84 End face
[0131] 85 End face
[0132] 86 End face
[0133] 87 End face
[0134] 88 End face
[0135] 89 End face
[0136] 90 First position
[0137] 92 Second position
[0138] 100 Casting Equipment
Claims
1. A casting housing (40) for producing a filter element (10) for filtering a fluid, the filter element (10) having a filter body (12) and a seal and / or an end disk extending circumferentially at least partially around the filter body (12), the casting housing (40) comprising: a receiving housing (42) for receiving the casting material in the groove (50), the receiving housing (42) having a support surface (56) for the filter body (12); And a cover (60) having at least two cover parts (62, 64), which are arranged to be movable independently of each other relative to the receiving housing (42), the cover parts (62, 64) exposing the groove (50) in a first position (90) and substantially covering the groove (50) in a second position (92) when the filter body (12) is inserted as intended, wherein the bottom sides (78, 80) of the at least two cover parts (62, 64) facing the cavity (46) formed by the groove (50) in the second position (92) are realized as sealing surfaces (22) or functional surfaces for forming the seal (20) and / or the end disc.
2. The casting shell according to claim 1, wherein the at least two cover parts (62, 64) are supported at the receiving shell (42) so as to be movable independently of each other.
3. A casting shell according to claim 1 or 2, wherein the groove (50) comprises a groove wall (52) at its inner side, which is lower than the groove wall (54) at the outer side of the groove (50), and the groove (50) comprises a support surface (56) for the filter body (12) at the inner groove wall (52), in particular wherein the support surface (56) for the filter body (12) is realized horizontally.
4. A cast housing according to one of claims 1 to 3, wherein the at least two cover parts (62, 64) are arranged at the receiving housing (42) to be pivotable about their own parallel axes (70, 72), in particular pivotable by about 180°, the parallel axes (70, 72) being arranged parallel to a support surface (56) for the filter body (12).
5. The cast housing according to one of claims 1 to 3, wherein the at least two cover parts (62, 64) are arranged at the receiving housing (42) to be slidable in different directions respectively parallel to a support surface (56) for the filter body (12).
6. The cast shell according to one of the preceding claims, comprising a fastening device by means of which the at least two cover parts (62, 64) can be fixed in the second position (92), in particular wherein the fastening device is a mechanical fastening device and / or a magnetic fastening device.
7. A cast housing according to one of the preceding claims, wherein in the second position (92), the at least two cover parts (62, 64) provide a free space in the cast housing (40) which is larger than the cross-section of the filter body (12) as intended to be inserted into the cast housing (40).
8. A cast housing according to one of the preceding claims, wherein the side faces (74, 76) of the at least two cover parts (62, 64) which are adjacent to the outer side (26) of the filter body (12) in the second position (92) are realized in a shape complementary to the outer side (26) of the filter body (12).
9. The cast shell according to one of the preceding claims, wherein mutually adjacent end faces (82, 83, 84, 85, 86, 87, 88, 89) of the at least two movable cover parts (62, 64) abut each other tightly and sealingly in the second position (92).
10. A casting device (100) having a casting shell (40) according to one of the preceding claims, wherein a filter body (12) can be inserted into the casting shell (40) as intended, and the casting device has a metering device, by means of which casting material can be filled into a recess (50) of a receiving shell (42) of the casting shell (40).
11. The casting device according to claim 10, wherein the at least two cover parts (62, 64) are realized to abut tightly against a filter body (12) inserted into the casting housing (40) as intended, in particular to abut tightly against at least partly.
12. The casting device according to claim 10, wherein the at least two cover parts (62, 64) are formed to be separated by a gap (48) from the filter body (12) inserted into the casting housing (40) as intended, in particular at least partially separated by a gap (48) from the filter body (12).
13. The casting device according to one of claims 10 to 12, comprising a clamping device (30) for fixing the filter body (12) in the casting housing (40) during the casting process.
14. A method for producing a filter element (10) for filtering a fluid by means of a cast housing (40) according to one of claims 1 to 9, the filter element (10) having a filter body (12) and a seal (20) and / or an end disk extending circumferentially at least partially around the filter body (12), wherein in a first position (90) of the cover part (62, 64), the filter body (12) is placed with its end face (16) on the receiving housing (42) as intended, so that the outer edge (18) of the filter body (12) at least partially protrudes into a recess (50) of the cast housing (40), wherein the casting material is filled into the groove (50), and The at least two cover parts (62, 64) are moved independently of each other to the second position (92), and in the second position (92), the receiving shell (42) and the at least two cover parts (62, 64) close the cavity (46) formed by the groove (50), so that the bottom side (78, 80) of the at least two cover parts (62, 64) facing the cavity (48) in the second position (92) is realized as a sealing surface (22) or a functional surface for forming the seal (20) and / or the end disc.
15. The method according to claim 14, comprising: - forming the seal (20) at the outer edge (18) of the end surface (16) of the filter body (12); - moving the at least two cover parts (62, 64) back to the first position (90); - Removing the filter body (12) from the support surface (56) of the receiving housing (42).
16. The method according to claim 14 or 15, wherein: Before placing the filter body (12) on the receiving housing (42), the inner surface (58, 59) of the groove (50) and the bottom sides (78, 80) of the at least two cover parts (62, 64) are provided with a release agent.
17. The method according to one of claims 14 to 16, wherein: After the filter body (12) is placed on the receiving housing (42), the filter body (12) is fixed by means of a clamping device (30), and before the filter body (12) is removed, the clamping device (30) is removed from the receiving housing (42) again.