Forming tool, method for producing a trough mirror and use

Abstract

Forming tool (1) for producing a recessed surface (100) for a cooktop, comprising an upper tool part (2) and a lower tool part (3), wherein the upper tool part (2) and the lower tool part (3) each have a forming section (4) such that a predetermined forming occurs on a blank (101) arranged between the tool parts (2, 3). A locking step (5) is associated with the forming section (4). In the method for producing a recessed surface (100) for a cooktop with such a forming tool (1), a blank (101) is inserted between an upper tool part (2) and a lower tool part (3), which are then moved towards each other to create a predetermined shape in the blank (101). A locking step (5) on a forming section (4) prevents unwanted deformation away from the forming section (4).The recessed surface (100) for a cooktop unit is manufactured according to this method and / or with such a forming tool (1). The invention also includes the use of a locking step (5) in a forming tool (1) for the manufacture of a recessed surface (100) for a cooktop unit.

Description

[0001] The present invention relates to a forming tool for producing a recessed surface for a cooktop, in particular for a gas cooktop. The forming tool comprises at least one upper tool part and at least one lower tool part, wherein the upper tool part and the lower tool part each have at least one forming section, such that a predetermined forming action is performed when a forming element is arranged between the tool parts.

[0002] The raw circuit board is produced. The present invention also relates to a method for producing a recessed mirror for a cooktop device, in particular for a gas cooktop, especially using such a forming tool. Furthermore, the present invention relates to a recessed mirror and its use.

[0003] Depending on the design, cooktops may feature a so-called recessed surface. Gas cooktops, in particular, often have a recessed surface, which is usually made from a sheet of stainless steel bent or formed into a specific shape.

[0004] In this process, raised sections are incorporated into a so-called blank circuit board, into which the gas burners are later arranged. These raised sections typically also include openings or cutouts through which the gas burners are guided and secured from below, or through which the gas burners are connected.

[0005] To produce a concave surface, various forming tools are known in the prior art, which can be used to form a blank sheet. To achieve a particularly uniform surface despite the forming process, so-called locking beads or drawing beads are used in the prior art. This manufacturing method is very simple and generally reliable. However, a disadvantage is that surface distortions still regularly occur, which are visually unappealing and undesirable for the user.

[0006] It is therefore the object of the present invention to provide a trough mirror which has particularly advantageous surface properties.

[0007] This problem is solved by a forming tool with the features of claim 1, by a method for producing a trough mirror with the features of claim 5, by a trough mirror with the features of claim 6, and by a use with the features of claim 7. Preferred embodiments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the exemplary embodiments.

[0008] The forming tool according to the invention serves to produce a recessed surface for a cooktop device and comprises at least one upper tool part and at least one lower tool part, wherein the upper tool part and the lower tool part each have at least one forming section, such that a predetermined forming process takes place on a blank arranged between the tool parts. At least one locking step is assigned to the at least one forming section.

[0009] According to the application, a forming section is in particular a section where a change of direction takes place, so to speak, or the section where the raw blank is processed or formed.

[0010] According to the application, a raw blank is, in particular, for example, a flat or otherwise pre-formed stainless steel blank or the like, from which the recessed mirror is manufactured.

[0011] In particular, a recessed surface is manufactured for a cooktop device designed as a gas cooktop. Such a recessed surface has at least one opening for the gas burners, and depending on the design, further deformations or specific shaping features may be provided on the recessed surface, both in the edge area and at the openings for the glass burners, as well as elsewhere.

[0012] The forming tool according to the invention offers many advantages. A significant advantage of using a locking step in the forming tool or on the forming section is that particularly advantageous surface properties can be achieved, especially on the visible upper surface of the trough.

[0013] This allows a recessed mirror to be produced with an optimized surface, which in particular has no or fewer surface distortions compared to other manufacturing processes.

[0014] In the prior art, depending on the design, barrier beads are used, but these do not reliably prevent surface distortion of the recessed area. Such distortions represent visually undesirable and unsightly defects of the surface.

[0015] Preferably, the locking step is arranged in at least one corner section of a forming section. Especially in a corner section, conventional tools can cause significant surface distortions if the blank is formed in two different directions in one area. Here, the use or arrangement of a locking step is particularly advantageous.

[0016] The barrier step is particularly preferably formed circumferentially in at least one forming section. A circumferential design of the barrier step ensures that there is no impairment of the surface structure of the blank or the cavity surface.

[0017] In advantageous embodiments, at least one forming section creates at least one recess for at least one burner feedthrough. Such a design is particularly appropriate when the cooktop for which the recess is manufactured is a gas cooktop. In this recess, a feedthrough or cutout can be created in the same step, later, and / or even beforehand, to allow the gas burner to pass through from below the recess or to provide a supply line or connection.

[0018] The method according to the invention serves to produce a recessed surface for a cooktop, particularly with a forming tool as previously described. A blank is inserted between at least one upper tool part and at least one lower tool part, the upper and lower tool parts being moved towards each other to create a predetermined shape in the blank. Unwanted deformation away from the forming section is prevented by at least one locking step on at least one forming section.

[0019] In particular, distortions and / or deformations of the surface at a location other than in the forming section can be prevented and / or reduced.

[0020] The inventive method also offers the advantages that have already been described for the inventive forming tool.

[0021] The recessed mirror according to the invention for a cooktop device is manufactured according to the method described above and / or with a forming tool as described above.

[0022] The trough mirror according to the invention also offers the advantages already described for the forming tool and the method. In particular, especially high-quality trough mirrors with particularly good surface properties can be produced, since surface distortion is effectively or better avoided by providing a barrier step.

[0023] According to the invention, the use of a locking step in a forming tool in the production of a recessed mirror for a cooktop device is also included.

[0024] This use also offers the advantages already mentioned.

[0025] Further advantages and features of the present invention will become apparent from the exemplary embodiments, which are explained below with reference to the accompanying figures.

[0026] The figures show: Fig. 1a, Fig. 1b a purely schematic representation of an embodiment of a forming tool according to the invention ( Fig. 1a) and a corresponding lower tool part of the forming tool ( Fig. 1b) in a perspective view; Fig. 2 a purely schematic detailed representation of an embodiment of a forming tool according to the invention in a sectional view; and Fig. 3 a purely schematic representation of detail “C” from Fig. 2.

[0027] In Fig. Figure 1a shows a purely schematic forming tool 1 according to the invention, which in the embodiment shown here comprises an upper tool part 2 and a lower tool part 3.

[0028] A flat blank 101, made of stainless steel or a metallic material in general, can be inserted between the upper tool part 2 and the lower tool part 3 to form a so-called trough 100. When the blank 101 is processed and the upper tool part 2 and the lower tool part 3 of the forming tool 1 are moved towards each other, the blank 101 is pressed into a predetermined shape, creating a trough 100.

[0029] In the Fig. 1b separately shown lower tool part 2 of the in Fig. In the exemplary embodiment of a forming tool 1 according to the invention shown in Figure 1, two recesses, or rather negative recesses, i.e., raised areas 7, are visible. These later provide corresponding recesses in a trough surface 100, which in turn provide the burner opening 102 for a gas cooktop. In the center of each raised area 7, or each subsequent burner opening 102, a section is visible which, in the exemplary embodiment shown here, cuts out of the blank 101 to serve as the opening for the burners.

[0030] The elevations 7 are essentially rectangular in shape, with rounded corner sections 6 provided here.

[0031] In Fig. 2 is, purely schematically, a corner section 6 of a raised section 7 of a forming tool 1 according to Fig. Figure 1 shows a sectional view from the side. Here it can be seen that a form is created between the upper tool part 2 and the lower tool part 3, into which a flat or pre-formed blank 101 is pressed or molded, so that a recess 100 is formed in a predetermined shape.

[0032] In order to ensure the best possible surface finish of the subsequent trough surface 100, and in particular to avoid surface distortions caused by the forming process, a barrier step 5 is provided around the raised section 7, which prevents undesirable distortions in the surface of the subsequent trough surface 100 during forming.

[0033] In Fig. 3 is purely schematic of the one in Fig.Detail 2, marked as "C", is shown in an enlarged view. Here you can see the raw blank 101 or the already formed recess 100 between the upper tool part 200, the lower tool part 3, and the locking step 5.

[0034] In the enlarged view, the locking step 5 can be seen in the corner section 6 of the elevation 7. By providing the locking step 5, arranged here around the elevation 7, it is possible to achieve a particularly precise transformation of the blank 101 into the shape of the recessed surface 100, without undesirable distortions of the surface, which would later be visually unappealing when the recessed surface 100 is used in a cooktop or a gas cooktop. Reference symbol list 1 forming tool 2 upper tool part 3 lower tool part 4. Forming section 5 locking stage 6 Corner section 7 Increase 100 recessed mirrors 101 Raw circuit boards 102 Burner feedthrough

Claims

[1] Forming tool (1) for producing a recessed mirror (100) for a cooktop device, comprising at least one upper tool part (2) and at least one lower tool part (3), wherein the upper tool part (2) and the lower tool part (3) have at least one forming section (4) such that a predetermined forming takes place on a blank (101) arranged between the tool parts (2, 3), characterized by , that at least one forming section (4) is assigned at least one blocking stage (5). [2] Forming tool according to claim 1, characterized by , that the locking step (5) is arranged in at least one corner section (6) of a forming section (4). [3] Forming tool according to one of the preceding claims, characterized by , that the locking stage (5) is formed circumferentially in at least one forming section (4). [4] Forming tool according to one of the preceding claims, characterized by, that at least one forming section (4) forms at least one recess for at least one burner feedthrough (102). [5] Method for producing a recessed mirror (100) for a cooktop device, in particular with a forming tool (1) according to one of the preceding claims, wherein a blank sheet (101) is inserted between at least one upper tool part (2) and at least one lower tool part (3) and wherein the upper tool part (2) and the lower tool part (3) are moved towards each other in order to introduce a predetermined shape into the blank sheet (101), characterized by , that by means of at least one locking stage (5) at at least one forming section (4) an unwanted deformation away from the forming section is avoided. [6] Recessed mirror (100) for a cooktop device, manufactured according to a method and / or with forming tool (1) according to one of the preceding claims. [7] Use of a locking step (5) in a forming tool (1) in the manufacture of a recessed mirror (100) for a cooktop device.

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