Method for forming a workpiece by means of a forming tool of a forming device, and forming device

Abstract

The invention relates to a method for forming a workpiece (5) by means of a forming tool (2) of a forming device (1), wherein an active surface of a tool upper part (3) and / or an active surface of a tool lower part (4) of the forming tool (1) are / is sprayed with a lubricant by means of a spraying device (16), the spraying being carried out either partially or exclusively while the workpiece (5) to be formed is being moved in and / or the spraying being carried out either partially or exclusively while the formed workpiece (5) is being moved out and / or the spraying being carried out with the workpiece (5) having been moved in and lying on depositing locations (12, 13) of multiple rough position adapters (10, 11) for forming in a ready position.

Description

[0001] Patent application Applicant: Schuler Presses GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 1 -

[0002] "Method for forming a workpiece using a forming tool, a forming device and a forming device"

[0003] The invention relates to a method for forming a workpiece using a forming tool of a forming device and a forming device according to the preamble of claim 1 or 8.

[0004] From DE 1 804652 A, a machine tool with an automatically operating device for spraying the workpieces and / or tools with a lubricant is known, wherein a network of lubricant supply lines and spray head control lines equipped with taps for connecting spray heads is permanently installed on the machine, wherein spray heads directed towards the lower part of the tool are attached laterally to the moving upper part of the tool or wherein spray heads directed towards the upper part of the tool are attached laterally to the stationary lower part of the tool.

[0005] From WO 2019 / 038556 A1, a method for forming a part from sheet metal and a part formed by this method are known, wherein the method comprises the steps: (a) heating a metal sheet to a temperature T; and (b) forming the sheet into the part between dies while coolant is applied to the sheet, wherein in step (a) the metal sheet is heated at a rate of at least 50 °C / s and the temperature T is above a critical forming temperature and does not exceed a critical microstructure change temperature of the metal sheet.

[0006] In such processes, it is important to keep the temperature loss of the workpiece after heating as small as possible, so that the transfer of the workpiece from a heating unit to a forming tool should take place as quickly as possible.

[0007] The object of the invention is to propose a method for forming a workpiece using a forming tool or forming device, as well as a forming device, in which a throughput time is reduced or a time loss for lubrication is reduced.

[0008] This task is performed starting from the features of the preamble of claim 1 or

[0009] 8 is solved by the characterizing features of claim 1 and 8, respectively. Advantageous and expedient further developments are specified in the respective dependent claims. Patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 2 -

[0010] In the inventive method for forming a workpiece using a forming tool of a forming device, the forming tool comprises an upper tool part and a lower tool part, and the workpiece is formed by an interaction of the upper tool part and the lower tool part, wherein at least the upper tool part or at least the lower tool part is moved, wherein an effective surface of the upper tool part and / or an effective surface of the lower tool part of the forming tool is sprayed with a lubricant by means of a spraying device.wherein the spraying is carried out either partially or exclusively during the insertion of the workpiece to be formed and / or wherein the spraying is carried out either partially or exclusively during the extension of the formed workpiece and / or wherein the spraying is carried out with the workpiece inserted and lying in a ready position on supports of several rough guides for forming. This makes it possible to apply lubricants during the transport of the workpiece and / or in the ready position of the workpiece, so that there is no delay in the production process in which the workpiece is held for lubricant application. Accordingly, the required cycle time is reduced and thus also the cooling of the workpiece is reduced.

[0011] Furthermore, the spraying device can be equipped with at least one spraying device from which the lubricant is sprayed through at least one nozzle. This allows the lubricant to be applied in a targeted manner.

[0012] It may also be possible to direct at least one spray nozzle of the spraying device at least partially towards the workpiece in such a way that the lubricant bounces off the workpiece and / or drips off, coating the upper and / or lower tool part with the lubricant. This allows areas of the upper and / or lower tool part to be coated that are difficult or impossible to reach with a direct spray jet.

[0013] Furthermore, it may be provided that the lubricant is sprayed as a powder, particles of the powder are electrically charged by the spraying device, and the particles of the powder are attracted by the grounded working surface of the upper tool part and / or by the grounded working surface of the lower tool part in such a way that a patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 3 -

[0014] The coating of the effective surface(s) is carried out. This allows for particularly targeted coating of the effective surfaces and thus also economical use of lubricant.

[0015] It can also be provided that the coarse guides, which are arranged particularly on the lower part of the tool, are each equipped with a support for the workpiece, wherein one of the coarse guides and two of the spray devices of the spraying system each form a unit such that the respective spray device is attached to the lower part of the tool by means of the respective coarse guide, wherein the working surface of the upper part of the tool is sprayed by a nozzle of the spray device positioned above the support on the coarse guide, and wherein the working surface of the lower part of the tool is sprayed by a nozzle of the spray device positioned below the support on the coarse guide. This allows all working surfaces involved in the forming process to be coated with lubricant simultaneously.

[0016] Furthermore, it may be provided that at least one or all of the spray devices emit a spray pulse while the workpiece is resting on the supports of the coarse guides and / or when the forming tool is almost closed, namely approximately one-tenth of a second before the end of a closing movement of the forming tool and / or when the forming tool is just opening, namely approximately one-tenth of a second after the beginning of an opening movement of the forming tool. This allows all contact surfaces to be coated in parallel with the forming process.

[0017] It can also be provided that a nozzle head of the spray device is moved from a rest position to a working position before spraying and from the working position to the rest position after spraying, wherein in the rest position the nozzle head of the spray device forms a section of the effective surface of the upper tool part or a section of the effective surface of the lower tool part of the forming tool. This makes it possible to largely integrate the spray device into the upper tool part and / or the lower tool part.

[0018] Finally, it may be possible to heat the workpiece in a heating tool of the forming device located upstream of the forming tool, wherein the heated workpiece is transported from the heating tool to the forming tool by means of a transfer device of the forming device. Patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 4 -

[0019] Such a design of the forming device ensures uninterrupted transport and uninterrupted forming of the workpiece.

[0020] The forming device according to the invention comprises a forming tool for forming a workpiece, wherein the forming tool comprises an upper tool part and a lower tool part, wherein the forming tool comprises a spraying device for spraying a lubricant, wherein at least one spraying device of the spraying device is arranged on the upper tool part and / or that at least one spraying device of the spraying device is arranged on the lower tool part, wherein the at least one spraying device is arranged such that an effective surface of the upper tool part and / or an effective surface of the lower tool part is also located in an effective area of ​​the at least one spraying device.This is possible when the workpiece to be machined is partially inserted, and / or when the workpiece to be machined is fully inserted between the upper and lower tool sections and held at a distance from them, and / or when the workpiece to be machined is not yet or only partially extended. This makes it possible to apply lubricant during the transport of the workpiece and / or while the workpiece is in the ready position, so that there is no delay in the production process that would otherwise occur if the workpiece were held in place for lubricant application. Accordingly, the required cycle time is reduced, and thus the cooling time of the workpiece is also minimized.

[0021] It is also possible to provide the lubricant as a powder, wherein the spraying device includes a charging device which acts on the powder in such a way that the powder-forming particles are electrically charged, wherein the forming device includes a grounding device to which the working surface of the upper tool part and / or the working surface of the lower tool part is / are connected in such a way that it is / are grounded, and wherein the charging device and the grounding device act in such a way that the electrically charged particles are attracted to the working surface of the upper tool part and / or the working surface of the lower tool part. This allows for particularly targeted coating of the working surfaces and thus also economical use of the lubricant.

[0022] Furthermore, it may be provided that the forming tool is equipped with several coarse guides, each coarse guide comprising a support on which the workpiece rests in a ready position until the workpiece is pressed into the lower part of the tool by the upper part against a restoring force of the supports, whereby between patent application applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 5 - an upper clearance is formed between the workpiece in the ready position and the upper part of the tool, and a lower clearance is formed between the workpiece in the ready position and the lower part of the tool, wherein at least one of the spray devices of the spraying device is arranged, in particular on the lower part of the tool, such that its nozzle is directed towards the upper clearance, and wherein at least one of the spray devices of the spraying device is arranged, in particular on the lower part of the tool, such that its nozzle is / are directed towards the lower clearance. This eliminates the need for a technically complex arrangement of spray devices on the upper part of the tool.

[0023] It is also possible to equip the forming tool with several coarse guides, wherein the coarse guides are arranged on the tool base, and wherein one of the coarse guides and at least one of the spray devices of the spraying system each form a single unit such that the spray device is attached to the coarse guide and, by means of the coarse guide, to the tool base. This eliminates the need for additional mounting devices for the spray devices; instead, the existing coarse guides are used to mount the spray devices.

[0024] Furthermore, it may be possible to attach the respective spray device and its nozzle to the coarse guide. This provides a protected arrangement for the nozzle of the respective spray device, ensuring that it maintains its orientation.

[0025] It is also possible to equip the forming device with a heating tool for heating the workpiece, wherein the heating tool comprises an upper heating tool part and a lower heating tool part, and wherein the opening and closing of the forming tool and the opening and closing of the heating tool are synchronized. This results in an efficient design of the forming device.

[0026] Finally, the forming device can be equipped with a transfer device, which transports the workpiece from the heating tool to the forming tool. This makes the forming device a module that can be easily integrated into production lines. Patent application Applicant: Schuler Pressen GmbH Status: October 17, 2024 Our reference: SCH 8398 / DR - 6 - For the purposes of the invention, a workpiece is understood to be, in particular, an aluminum blank, which preferably consists of a high-strength aluminum alloy of the 6000 or 7000 series. A 2000 series alloy or other comparable compositions are also preferably included.

[0027] For the purposes of the invention, an effective surface of the upper tool part or an effective surface of the lower tool part is understood to be a surface with which the upper tool part or the lower tool part acts on the workpiece during forming, namely, is in contact with it.

[0028] Further details of the invention are described in the drawing with reference to schematically illustrated embodiments.

[0029] This shows:

[0030] Figure 1: a first embodiment of a device according to the invention

[0031] Forming device in a first position;

[0032] Figures 2 to 7: the forming device known from Figure 1 in a second to seventh position;

[0033] Figure 8: a schematic representation of a coarse marker with a spray device attached to it;

[0034] Figure 9: a second embodiment of a device according to the invention

[0035] Forming device in a fourth position and

[0036] Figure 10: a third embodiment of an invention

[0037] Forming device in a fourth position.

[0038] Figures 1 to 7 show a forming device 1 according to the invention in seven positions. The forming device 1 comprises a forming tool 2, which includes an upper tool part 3 and a lower tool part 4. The forming device 1 is installed in a press 101, wherein the upper tool part 3 is attached to a ram 102 of the press 101 and wherein the lower tool part 4 is attached to a press table 103. [The following appears to be unrelated and possibly a separate document:] Patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 7 -

[0039] The upper tool part 3 is attached to the press 101. The ram 102 moves the upper tool part 3 vertically downwards in the direction of arrow z' to close the forming tool 2, which is formed from the upper tool part 3 and the lower tool part 4. To open the forming tool 2, the upper tool part 3 moves vertically upwards in the direction of arrow z.

[0040] Through the interaction of the upper tool part 3 and the lower tool part 4, a workpiece 5, which is designed as a circuit board, is formed.

[0041] The forming device 1 further comprises a heating tool 6 for heating the workpiece 5. The heating tool 6 comprises a heating tool upper part 7 and a heating tool lower part 8. The opening and closing of the forming tool 2 and the opening and closing of the heating tool 6 occur synchronously, since the heating tool upper part 7, like the tool upper part 3, is connected to the ram 102.

[0042] Furthermore, the forming device 1 comprises a transfer device 9, which operates between the heating tool 6 and the forming tool 2 and is shown only symbolically in Figure 1. The transfer device 9 removes the workpiece 5, heated in the heating tool 6, from the heating tool 6 and transports it to the forming tool 2, placing the workpiece 5 onto supports 12, 13 of coarse guides 10, 11. In the schematically drawn Figures 1 to 7, only two coarse guides are shown in each figure. A forming tool typically comprises at least three, and in particular four or more, coarse guides and thus a corresponding number of supports.

[0043] Figure 1 shows how the workpiece 5, heated in the heating tool 6, is gripped by the transfer device 9 and is being transported from the heating tool 6 in the direction of arrow x to the forming tool 2. Another workpiece 14 is also shown, which is being transported towards the heating tool 6 by a transfer device (not shown) located upstream of the forming tool 1. Furthermore, a workpiece 15 that has already been formed is also shown, which is being removed from the forming tool 2 by another transfer device (not shown) located downstream of the forming tool 1. Patent application applicant: Schuler Pressen GmbH, date: October 17.2024 Our reference: SCH 8398 / DR - 8 - Figure 2, in comparison with Figure 1, shows how the workpiece 5 is moved further into the open forming tool 2 by the transfer device (which is hidden here), and how the formed workpiece 15 is almost completely transported out of the forming tool 2. Accordingly, the workpiece 5 is inserted into the forming tool 2.

[0044] Figure 3 shows how the workpiece 5 has now been moved almost completely from the transfer device (which is hidden here) into the open forming tool 2, and how the formed workpiece 15 has been completely transported out of the forming tool 2. Simultaneously, the other workpiece 14 has meanwhile been moved almost completely into the open heating tool 6.

[0045] Figure 4 shows how the workpiece 5 is placed by the transfer device (not shown here) onto the supports 12, 13 of the coarse guides 10, 11. The workpiece 5 is thus in a ready position B on the coarse guides 10, 11 in the forming tool 2. The coarse guides 10, 11 are each attached to the lower part of the tool 4. Figures 1 to 4 also show a spray device 16 of the forming device 2. The spray device 16 comprises a left spray nozzle 17 and a right spray nozzle 18. The left spray nozzle 17 is attached to the left coarse guide 10, and the right spray nozzle 18 is attached to the right coarse guide 11. Furthermore, the spray device 17 includes a tank 19 with lubricant 20 and supply lines 21, 22, via which the spray devices 17, 18 are connected to the tank 19.Each of the spray devices 17, 18 comprises at least one first nozzle 17a, 18a by means of which lubricant 20 is sprayed onto an effective surface 4a of the mold base 4 as soon as the workpiece 5 is placed on the supports 12, 13 of the coarse guides 10, 11.

[0046] Additionally, the spray devices 17, 18 – as shown exclusively in Figure 4 – can each also include a second nozzle 17b, 18b. These second nozzles 17b, 18b can be designed as so-called lifting nozzles, which are extended telescopically for spraying and retract telescopically after spraying. A working surface 3a of the upper tool part 3 can be coated by means of the second nozzles 17b, 18b. For better understanding, Figure 4 shows the first nozzle 17b extended and the second nozzle 18b extended. Patent application Applicant: Schuler Pressen GmbH Status: October 17, 2024 Our reference: SCH 8398 / DR - 9 -

[0047] The lubricant 20 can be in the form of a liquid lubricant or a powder lubricant. If the lubricant 20 is in the form of a powder lubricant, it can be electrically charged by means of a charging device A (shown only in Figure 4) of the spray device 16. For this purpose, the upper tool part 3 and the lower tool part 4, or at least their effective surfaces 3a, 4a, which are to be coated, are grounded. [Coating of the effective surfaces 3a, 4a can be particularly effective if the effective surface 3a of the upper tool part 3 is insulated from a base body 3b of the upper tool part 3 by an insulating layer 3c and only the effective surface 3a is grounded, and / or if the effective surface 4a of the lower tool part 4 is insulated from a base body 4b of the lower tool part 4 by an insulating layer 4c and only the effective surface 4a is grounded.]This is achieved by means of a grounding device 23, to which the upper tool part 3 and the lower tool part 4 are connected, in particular with their working surfaces 3a, 4a. The grounding device 23 is shown by way of example only in Figure 4.

[0048] Figure 4 shows how an upper free space F3, which is formed between the upper part of the tool 3 and the workpiece 5, is sprayed by means of the second nozzles 17b and 18b, and how a lower free space F4, which is formed between the lower part of the tool 4 and the workpiece 5, is sprayed by means of the first nozzles 17a and 18a.

[0049] Figure 4 shows an example of how the liquid or powdered lubricant 20 is not only sprayed directly onto the working surfaces 3a, 4a, but also how it is applied indirectly. For this purpose, the lubricant 20 is sprayed directly towards the workpiece 5, causing it to rebound or drip back towards the working surface 3a or 4a. [If the lubricant 20 is sprayed as an electrically charged powder, the workpiece 5 can also be charged so that it repels and / or deflects the powder.]

[0050] It can, of course, also be provided that the spraying of the lubricant 20 begins, at least through one of the nozzles 17a, 18a, 17b, 18b, in the situation shown in Figure 1, as soon as the workpiece 15, which was formed prior to the workpiece 5, is removed from the forming tool 2. This is always done in such a way as to avoid coating the already formed workpiece 15. As long as the workpiece 5 to be formed has not yet been inserted between, or not yet completely inserted between, the upper tool part 3 and the lower tool part 4, the effective surface 3a of the upper tool part 3 can also be coated by means of the first nozzles 17a and 18a – with appropriate alignment or fanning. In this process, the activity of each nozzle must always be oriented towards the respective position of the formed workpiece 15 and the workpiece 5 to be formed.Individual or all of the nozzles mentioned can also be designed as multiple nozzles in order to spray in different directions.

[0051] Figure 5 shows how, after the working surfaces 3a, 4a are coated with lubricant 20, the forming tool 2 and the heating tool 6 are closed. Accordingly, the ram 102 has moved in the z' direction compared to Figure 4, and the upper tool part 3 is in the process of pressing the workpiece 5 past the supports 12, 13 of the rough guides 10, 11 towards the lower tool part 4. Likewise, the further workpiece 14 is pressed by the upper heating tool part 7 towards the lower heating tool part 8.

[0052] Figure 6 shows how the workpiece 5 is reshaped by the further downward movement of the plunger 102 between the upper tool part 3 and the lower tool part 4.

[0053] Figure 7 shows how the workpiece 5 has been completely formed. It also shows how the further workpiece 14 is now fully contacted by the heating tool upper part 7 and the heating tool lower part 8 for heating.

[0054] In a further step, the upper tool part 3 and the upper heating tool part 7 are then moved upwards again by the ram 102 in the direction of arrow z, so that the workpiece 5 can be removed from the forming tool 2 and the next workpiece 14 can be transported from the heating tool 6 into the forming tool 2 by the transfer device 9 (see Figure 1). The workpiece 5 is then ejected from the forming tool 2. This results in the situation shown in Figure 1 again, with the difference that another workpiece, not yet shown, comes into play, which is inserted into the forming tool while the formed workpiece is ejected from the forming tool. Patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 11 -

[0055] Figure 8 schematically shows a variant embodiment of a coarse guide 210 of a forming device 201 of a forming tool 202 with a spray device 217 of a spraying device 216 attached to it. The coarse guide 210 is screwed to a tool lower part 204, and the spray device 217 is screwed to the coarse guide 210 by its nozzle 217a. A support 212 of the coarse guide 210 is formed by a spring-loaded lug 212a, which temporarily retracts laterally in the direction of arrow x as soon as a workpiece 205 is pressed downwards in the direction of arrow z' by a descending tool upper part (not shown). Furthermore, Figure 8 schematically illustrates how electrically charged particles P of a powdered lubricant are sprayed through the nozzle 217a and attracted to a grounded working surface 204a of the lower part of the tool 204.

[0056] Figure 9 shows, analogously to Figure 4, a second embodiment of a forming device 301 according to the invention in a fourth position of a forming tool 302. In this embodiment, a spraying device 316 comprises a left spraying device 317 with fixed nozzles 317a, 317b, which are arranged on a left coarse injector 310, and a right spraying device 318 with fixed nozzles 318a, 318b, which are arranged on a right coarse injector 311. Here, lubricant 320 is sprayed by means of the lower nozzles 317a, 318a into a lower free space F304 formed under a resting workpiece 305 for coating an effective surface 304a of a tool lower part 304. In this process, lubricant 320 is sprayed by means of the upper nozzles 317b, 318b into an upper free space F303 formed above the workpiece 305 for coating an effective surface 303a of a tool upper part 303.For the basic function of the forming device 301, reference is also made to the description of Figures 1 to 7. The workpiece 305 rests on a left support 312 of a left coarse feeder 310 and on a right support 313 of a right coarse feeder 311. When the upper tool part 303 descends in the direction of arrow z', the supports 312, 313 are pivoted by the workpiece 305 pressing against them against the force of a spring 310a, 311a about a pivot point 31Ob, 311b. This releases the workpiece 305 to fall downwards onto the lower tool part 304. As soon as the workpiece 305 has passed the supports 312, 313, these are returned to the position shown in Figure 9 by the springs 310a, 311a. Patent application Applicant: Schuler Presses GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 12 - Figure 10 shows, by analogy to Figure 4, a third embodiment of a forming device 401 according to the invention in a fourth position of a forming tool 402. In this embodiment, a spraying device 416 comprises an upper spraying device 417 and a lower spraying device 418. The upper spraying device 417 comprises three nozzles 451, 452, 453, which are integrated as lifting nozzles into an upper tool part 403. The lower spraying device 418 comprises two nozzles 454 and 455, which are integrated as lifting nozzles into the lower tool part 404. The five nozzles 451 to 455 are identical in design and each comprises a nozzle head 451a to 455a and a lifting cylinder 451b to 455b.In Figure 10, the nozzle heads 451a, 452a, and 455a are raised by means of the lifting cylinders 451b, 452b, and 455b, so that lubricant 420 can be sprayed by means of the nozzle heads 451a, 452a, and 455a in this working position. The nozzle heads can also assume a rest position; for example, the nozzle heads 453a and 454a are retracted into this rest position by means of the lifting cylinders 453b and 454b. In this rest position, the nozzle head 453a forms a surface section of an effective surface 403a of the upper tool part 403, and the nozzle head 454a forms a surface section of an effective surface 404a of the lower tool part 404. The nozzles 451, 452, and 453 can be used to... Naturally, all three nozzles 451, 452 and 453 are active in the working position for spraying the working area 403a.

[0057] Naturally, both nozzles 454 and 455 are actively in the working position for spraying the working surface 404a. At the latest, as soon as the workpiece 405 approaches the respective nozzle 451 to 455 during the forming process, these nozzles are moved from the working position to the rest position.

[0058] patent application

[0059] Applicant: Schuler Presses GmbH Date: October 17, 2024 Our reference: SCH 8398 / DR

[0060] - 13 -

[0061] Reference symbol list

[0062] 1 Conversion unit

[0063] 2 forming tool

[0064] 3 Tool top

[0065] 3a Effective area of ​​3

[0066] 3b Basic body of 3

[0067] 3c Insulating layer of 3 between 3a and 3b

[0068] 4 Tool base

[0069] 4a Effective area of ​​4

[0070] 4b Basic shape of 4

[0071] 4c Insulating layer of 4 between 4a and 4b

[0072] 5 workpieces

[0073] 6 Heating tool

[0074] 7 Heating tool top

[0075] 8 Heating tool base

[0076] 9 Transfer facility

[0077] 10 left-hand rough guide

[0078] 11 right-hand rough guide

[0079] 12 of 10

[0080] 13 Filing of 11

[0081] 14 more workpieces

[0082] 15 already formed workpiece

[0083] 16 Spray device

[0084] 17 left spray device of 16

[0085] 17a first nozzle of 17

[0086] 17b second nozzle of 17 (optionally available)

[0087] 18 right spray device of 16

[0088] 18a first nozzle of 18

[0089] 18b second nozzle of 18 (optionally available)

[0090] 19 tanks out of 16 for 20

[0091] 20 lubricants

[0092] 21, 22 Supply line from 16

[0093] 23 Earthing device

[0094] A charging device of 16 patent applications

[0095] Applicant: Schuler Presses GmbH Date: October 17, 2024 Our reference: SCH 8398 / DR - 14 -

[0096] F3 upper free space

[0097] F4 lower free space x arrow direction z, z' arrow direction

[0098] 101 Press

[0099] 102 pestles out of 101

[0100] 103 press table out of 101

[0101] 201 Converter

[0102] 202 Forming tool

[0103] 204 Tool base

[0104] 205 workpiece

[0105] 210 Rough guides

[0106] 212 Filing of 210

[0107] 212a Nose of 212

[0108] 216 Spray device

[0109] 217 Spray device

[0110] 217a Nozzle of 217

[0111] P particles of a powdered lubricant

[0112] 301 Forming device (second version variant)

[0113] 302 Forming tool

[0114] 303 Tool top

[0115] 303a Effective area of ​​303

[0116] 304 Tool base

[0117] 304a Effective area of ​​304

[0118] 305 workpiece

[0119] 310 left rough guide

[0120] 310a spring of 310

[0121] 310b pivot point

[0122] 311 right-hand rough guide

[0123] 311 a spring of 311

[0124] 311 b pivot point

[0125] 312 left filing of 310 Patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 15 -

[0126] 313 right-hand storage of 311

[0127] 316 Spray device

[0128] 317 left spray device from 316

[0129] 317a, 317b Nozzle from 317 to 310

[0130] 318 right spray device from 319

[0131] 318a, 318b Nozzle from 318 to 311

[0132] 320 lubricants

[0133] F303 upper clearance

[0134] F304 lower clearance

[0135] 401 Converter

[0136] 402 Forming tool

[0137] 403 Tool top

[0138] 403a Effective area of ​​403

[0139] 404 Tool base

[0140] 404a Effective area of ​​404

[0141] 405 workpiece

[0142] 416 Spray device

[0143] 417 upper spray device

[0144] 418 lower spray device

[0145] 420 lubricants

[0146] 451-455 nozzle

[0147] 451a-455a Nozzle head of 451-455

[0148] 451b-455b Lifting cylinders from 451-455

Claims

Patent application Applicant: Schuler Presses GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 16 - Claims 1. Method for forming a workpiece (5; 205; 305; 405) using a forming tool (2; 202; 302; 402) of a forming device (1; 301; 401), wherein the forming tool (2; 202; 302; 402) comprises a tool upper part (3; 303; 403) and a tool lower part (4; 204; 304; 404), and wherein the workpiece (5; 205; 305; 405) is formed by an interaction of the tool upper part (3; 303; 403) and the tool lower part (4; 204; 304; 404), wherein at least the tool upper part (3; 303; 403) or at least the tool lower part (4; 204; 304; 404) is carried out, wherein an effective surface (3a; 303a; 403a) of the upper tool part (3; 303; 403) and / or an effective surface (4a; 204a; 304a; 404a) of the lower tool part (4; 204; 304; 404) of the forming tool (1 ; 301 ; 401) is sprayed with a lubricant (20; 320; 4020) by means of a spraying device (16; 316;416) is carried out, characterized in that the spraying is carried out either partially during or exclusively during the insertion of the workpiece (5; 205; 305; 405) to be formed and / or that the spraying is carried out either partially during or exclusively during the extension of the formed workpiece (5; 205; 305; 405) and / or that the spraying is carried out with the workpiece (5; 205; 305; 405) inserted and lying in a ready position (B) for forming on supports (12, 13; 212; 312, 313) of several coarse guides (10, 11; 210; 310, 311).

2. Method according to claim 1, characterized in that the spraying device (16; 316; 416) comprises at least one spraying device (17, 18; 217; 317, 318; 417, 418) from which the lubricant (20; 320; 420) is sprayed through at least one nozzle (17a, 17b, 18a, 18b; 217a; 317a, 317b, 318a, 318b; 451-455).

3. Method according to claim 2, characterized in that the at least one spray device (17, 18; 217; 317, 318; 417, 418) of the spray device (16; 316; 416) sprays at least partially against the workpiece (5; 205; 305; 405) in such a way that the lubricant (20; 320; 420) bounces off the workpiece (5; 205; 305; 405) and / or drips off in such a way that the upper part of the tool (3; 303; 403) and / or the lower part of the tool (4; 204; 304; 404) is coated with the lubricant (20; 320; 420). Patent application Applicant: Schuler Presses GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 17 - 4. Method according to at least one of the preceding claims, characterized in that the lubricant (20; 320; 420) is sprayed as a powder, that particles (P) of the powder are electrically charged by the spraying device (16; 316; 416) and that the particles (P) of the powder are attracted by the grounded working surface (3a; 303a; 403a) of the upper tool part (3; 303; 403) and / or by the grounded working surface (4a; 204a; 304a; 404a) of the lower tool part (4; 204; 304; 404) such that a coating of the working surface(s) (3a; 303a; 403a; 4a; 204a; 304a; 404a) is formed.

5. Method according to at least one of the preceding claims, characterized in that the coarse guides (10, 11; 210; 310, 311), which are arranged in particular on the lower part of the tool (4; 204; 304; 404), each have a storage compartment (12, 13; 212; 312, 313) for the workpiece (5; 205; 305; 405) and that one of the coarse guides (10, 11; 210; 310, 311) and two of the spray devices (17, 18; 217; 317, 318) of the spraying device (16; 316) each form a unit such that the respective spray device (17, 18; 217; 317, 318) by means of the respective coarse guide (10, 11 ; 210; 310, 311 ) to the lower tool part (4; 204; 304), so that the working surface (3a; 303a) of the upper tool part (3; 303) is each by means of a above the storage area (12, 13; 212; 312, 313) on the coarse guide (10, 11 ; 210; 310, 311 ) positioned nozzle (17a, 17b, 18a, 18b; 217a; 317a, 317b, 318a, 318b) of the spraying device (17, 18; 217; 317, 318) is sprayed and that the effective surface (4a; 204a; 304a) of the tool lower part (4; 204; 304) is sprayed by a nozzle (17a, 17b, 18a, 18b; 217a; 317a, 317b, 318a) positioned below the tray (12, 13; 212; 312, 313) on the coarse guide (10, 11 ; 210; 310, 311 ). 318b) is sprayed by the spraying device (17, 18; 217; 317, 318).

6. Method according to at least one of the preceding claims, characterized in that at least one of the spray devices (17, 18; 217; 317, 318; 417, 418) or from all spray devices (17, 18; 217; 317, 318; 417, 418) a spray is emitted as long as the workpiece (5; 205; 305; 405) rests on the supports (12, 13; 212; 312, 313) of the coarse guides (10, 11; 210; 310, 311) and / or Patent application Applicant: Schuler Pressen GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 18 - when the forming tool (2; 202; 302; 402) is almost closed, namely about 1 / 10 of a second before the end of a closing movement of the forming tool (2; 202; 302; 402) and / or when the forming tool (2; 202; 302; 402) is just opening, namely about 1 / 10 of a second after the beginning of an opening movement of the forming tool (2; 202; 302; 402).

7. Method according to at least one of the preceding claims, characterized in that a nozzle head of the spray device (417, 418) is moved from a rest position to a working position before spraying and is moved from the working position to the rest position after spraying, wherein in the rest position a surface section of the effective surface (403a) of the upper tool part (403) or a surface section of the effective surface (404a) of the lower tool part (404) of the forming tool (402) is formed by the nozzle head (451-455) of the spray device (417, 418).

8. Method according to at least one of the preceding claims, characterized in that the workpiece (5; 205; 305; 405) is heated in a heating tool of the forming device (1; 301; 401) upstream of the forming tool (2; 202; 302; 402) of the forming device (1; 301; 401) and wherein the heated workpiece (5; 205; 305; 405) is transported from the heating tool to the forming tool (2; 202; 302; 402) by means of a transfer device (9) of the forming device (1; 301; 401).

9. Forming device (1; 201; 301; 401) comprising a forming tool (2; 202; 302; 402) for forming a workpiece (5; 205; 305; 405), wherein the forming tool (2; 202; 302; 402) comprises a tool upper part (3; 303; 403) and a tool lower part (4; 204; 304; 404), characterized in that the forming tool (2; 202; 302; 402) includes a spraying device (16; 216; 316; 416) for spraying a lubricant (20; 320; 420) comprises that at least one spray device (17, 18; 217; 317, 318; 417, 418) of the spraying device (16; 216; 316; 416) is arranged on the upper part of the tool (3; 303; 403) and / or that at least one spray device (17, 18; 217; 317, 318; 417, 418) of the spraying device (16; 216; 316; 416) is arranged on the lower part of the tool (4; 204; 304; 404), that the at least one spray device (17, 18; 217; 317, 318; 417, 418) is arranged such that a Working surface (3a; 303a; 403a) of the upper part of the tool (3; 303; 403) and / or an effective surface (4a; 204a; 304a; 404a) of the tool lower part Patent application Applicant: Schuler Presses GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 19 - (4; 204; 304; 404) is also in an effective area of ​​at least one spray device (17, 18; 217; 317, 318; 417, 418) when the workpiece to be machined (5; 205; 305; 405) is partially retracted and / or when the workpiece to be machined (5; 205; 305; 405) is completely retracted between the upper tool part (3; 303; 403) and the lower tool part (4; 204; 304; 404) and is held at a distance from these and / or when the workpiece to be machined (5; 205; 305; 405) is not yet or partially extended.

10. Forming device according to claim 9, characterized in that the lubricant (20; 320; 420) is in the form of a powder, that the spraying device (16; 216; 316; 416) comprises a charging device (A) which acts on the powder in such a way that the powder-forming particles (P) are electrically charged, that the forming device (1; 201; 301; 401) comprises a grounding device (23) to which the working surface (3a; 303a; 403a) of the upper tool part (3; 303; 403) and / or the working surface (4a; 204a; 304a; 404a) of the lower tool part (4; 204; 304; 404) is / are connected in such a way that it is / are grounded, and that the The charging device (A) and the grounding device (23) have such an effect that the electrically charged particles (P) are removed from the effective surface (3a; 303a; 403a) of the upper tool part (3; 303; 403) and / or the working surface (4a; 204a; 304a; 404a) of the lower tool part (4; 204; 304; 404).

11. Forming device according to claim 9 or 10, characterized in that the forming tool (2; 202; 302; 402) comprises several coarse guides (10, 11; 210; 310, 311), each coarse guide (10, 11; 210; 310, 311) comprising a support (12, 13; 212; 312, 313) on which the workpiece (5; 205; 305; 405) rests in a ready position until the workpiece (5; 205; 305; 405) is drawn through the upper part of the tool (3; 303; 403) against a restoring force of the supports (12, 13; 212; 312, 313) into the lower part of the tool (4; 204; 304; 404) is pressed, that an upper clearance (F3; F303) is formed between the workpiece (5; 205; 305; 405) lying in the ready position and the upper part of the tool (3; 303; 403), and that between the workpiece (5; 205; 305; 405) lying in the ready position and the upper part of the tool (3; 303; 403) Patent application Applicant: Schuler Presses GmbH Status: 17.10.2024 Our reference: SCH 8398 / DR - 20 - A lower clearance (F4; F304) is formed between the workpiece (5; 205; 305; 405) and the lower part of the tool (4; 204; 304; 404), such that at least one of the spray devices (17, 18; 217; 317, 318; 417, 418) of the spraying device (16; 316; 416) is arranged, in particular on the lower part of the tool (4; 204; 304; 404), such that its nozzle (17a, 17b, 18a, 18b; 217a; 317a, 317b, 318a, 318b; 451-455) is directed towards the upper clearance and that at least one of the spray devices (17, 18; 217; 317, 318; 417, 418) of the spraying device (16; 316; 416) is arranged in such a way, in particular on the lower part of the tool (4; 204; 304; 404), that its nozzle (17a, 17b, 18a, 18b; 217a; 317a, 317b, 318a, 318b; 451 -455) is / are directed towards the lower free space.

12. Forming device according to claim 9 or 10, characterized in that the forming tool (2; 202; 302; 402) comprises several coarse injectors (10, 11; 210; 310, 311), wherein the coarse injectors (10, 11; 210; 310, 311) are arranged on the lower part of the tool (4; 204; 304), wherein one of the coarse injectors (10, 11; 210; 310, 311) and at least one of the spray devices (17, 18; 217; 317, 318) of the spray device (16; 316) each form a structural unit such that the spray device (17, 18; 217; 317, 318) is attached to the coarse guide (10, 11 ; 210; 310, 311 ) and is attached to the tool lower part (4; 204; 304) by means of the coarse guide (10, 11 ; 210; 310, 311 ).

13. Forming device according to claim 12, characterized in that the spray device (17, 18; 217; 317, 318) with its nozzle (17a, 17b, 18a, 18b; 217a; 317a, 317b, 318a, 318b) is attached to the coarse injector (10, 11 ; 210; 310, 311 ).

14. Forming device according to at least one of claims 9 to 13, characterized in that the forming device (1; 201 ; 301 ; 401 ) comprises a heating tool (6) for heating the workpiece (5; 205; 305; 405), wherein the heating tool (6) comprises a heating tool upper part (7) and a heating tool lower part (8) and wherein the opening and closing of the forming tool (2; 202; 302; 402) and the opening and closing of the heating tool (6) are synchronized.

15. Forming device according to claim 14, characterized in that the forming device (1 ; 201 ; 301 ; 401 ) comprises a transfer device (9), wherein the transfer device (9) transports the workpiece (5; 205; 305; 405) from the heating tool (6) to the forming tool (2; 202; 302; 402).

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