JP2002542038A - Stamping methods and stamping tools, especially their application to stamping benches, stamping products, in particular benches obtained by the methods and tools - Google Patents

Abstract

(57) [Summary] This is an embossing method in which a plate T is embossed between a matrix 10 and a punch 4 sandwiched between a front wrinkle holder (AV) and a rear wrinkle holder (AR). A presser foot AR20 extends rearwardly from the prior art dimensions and has a curved shape, i.e., a right angle as in the prior art wrinkle presser, on the punch 4 (tip adjacent thereto, i.e., the front end AV of rear wrinkle). Rather, it has a shape that allows for the gradual deformation of deeper parts of the plate over a greater length of the wrinkle retainer.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to the technical field of plate embossing and the products obtained thereby.

[0002] In general, embossing is the process of using a press to process a plate or product having a specific, precise mold or shape. The principle of such a press is illustrated in FIG.

[0003] As schematically represented in the accompanying Figure 1, the embossed plate T comprises a front AV and a rear AR (AV and AR, as shown in the accompanying drawings, of the plate). The direction of travel—the plate indicates the exit of the plate below the press from the “AV” part indicating the entrance below the press.
AR >>, and thus each element of the press or tool is
In the following, according to the same convention, it is identified by the AV part and the AR part. See attached drawing-for example, if several consecutive stampings are made on the same plate to form a repetitive row of stamped parts, the total length of which is much larger than the width of the press, the width is: Of course, for obvious reasons of cost, it cannot be increased arbitrarily) and between the wrinkle press 3, which consists of two parts of a symmetrical form (hereinafter referred to as "two wrinkle presses" for clarity). Placed above the punch 4 to be held, this punch 4 has a female shape or figure for forming a male stamp in a plate, and comprises a press table 1, a matrix 2 and a male molded part or shape 5. Tool 10 having
Is lowered, pressing the plate against the punch, and as the press continues to lower, the plate can be deformed according to its molded part or shape 5.

[0004] It is known by those skilled in the art that when the press descends and comes into contact with the plate T, the press clamps between the lower surface 7 of the ground and the upper surface 8 of the wrinkle retainer without first deforming the plate. Have been.

[0005] Then, as the press continues to descend, the plates are notably in zones 9 and 9 in front of the wrinkle presser.
'Is tightened at the pinch point. Therefore, the lowering of the steel plate is caused by the surface 7 (9
) And 8 (9 '), before the plate is completely tightened, the plate slips a little, and furthermore the plate is blocked in translation and can no longer be deformed at the distance defined by the space of the clamp.

[0006] It is known by those skilled in the art that the steel sheet is thus stretched until it exactly matches the forming part 5 and becomes thinner, in particular causing deformation of the ridges 9, 9 '.

When the shape 5 is sufficiently embossed in the first plane of the steel sheet, a stamping pattern is created in the zones 9, 9 ′ of the steel sheet, on the one hand, due to the pressing of the ridges 9, 9 ′, Either one of those impressions will remain exposed on the visible side of the finished product, while on the other hand it is inevitable that defects such as curls and light wrinkles result from simultaneous stretching and deformation. . Such impressions are largely unacceptable as a finished product, especially as a finished product in which no additional fixing step is performed for protective or decorative coating.

By the way, the advantage of embossing in a very large number of technical fields is that it can be performed directly on the steel sheet so as to obtain a finished product without an additional step, ie an additional costly subsequent treatment. is there.

It should be noted that stainless steel is known to be more difficult to emboss than steel. Therefore, stronger tightening is required with greater risk than embossing. By the way, stainless steel is, of course, the material of choice for a large number of installations, including benches for travelers and waiting rooms in general.

[0010] Therefore, the problem to be solved by the present invention is to curl or wrinkle due to the trace of deformation and deformation when clamping the steel sheet according to the shape of the punch with respect to the original plane of the steel sheet. Is to eliminate.

“Embossed” here means to impose large deformations and / or deformations close to each other. This is the case for most stamping operations.

[0012] In particular, but not by way of limitation, special cases where such problems are particularly acute, steel plates for forming passenger seating benches in trains, waiting rooms, airports, subways and the like. Embossing.

Such a bench is shown in FIG. 2 of the accompanying drawings. The steel sheet T is stamped at intervals i so as to obtain a recessed seat molding or stamping dies 11, 12,. In the prior art, this type of bench was manufactured by embossing without a depressed molded part, which had the major drawback that passengers could slide forward or sideways. In addition, such benches have been manufactured with embossed molded parts by embossing.However, the distance between the press dies is too large, and as described below, Trying to narrow, wrinkles,
There was a drawback that shouldering and curling occurred.

The advantages of this type of technology include, but are not limited to, embossing of any type of bench with 2, 3, 4, 5, 6, 7 or more seats. It can be molded by pressing. Such benches strictly require continuous embossing.

[0015] Such a bench manufactured by embossing is less expensive than a bench formed of plastic material. As described below, the present invention can also emboss plastics or blends.

It will be appreciated that the recessed molding is gradual and that the entire molding of the bench is moderately curved for comfort when seated, as shown in FIG. 3 of the accompanying drawings. ing. These moldings are of course obtained by the exact shape 5 of the punch 4 and the corresponding tool. The spacing i is shown in more detail in FIG. 3, where i indicates the length of the flat part separating the two recesses (or roundings) 115 and 116.

If i is too small, in the conventional step of embossing, that is, in the conventional tool, a mold mark due to the above-described tightening and deformation occurs. However, in order to allow the maximum number of passengers to sit at the minimum length, it is necessary to reduce the interval i. In particular, its length is determined by the size of the vehicle or vehicle row. In many cases, the required interval i will leave the pattern described above with conventional bytes.

Furthermore, the steel sheet T used is preferably a steel sheet which is covered with a coating before the final embossing, so that it is not possible to erase their traces later. The present invention aims to solve those disadvantages.

[0019] Other features and advantages of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings. The examples shown in FIGS. 1 to 9 are, of course, not limiting.

As can be seen in FIG. 4, the present invention very generally relates to a posterior wrinkle holder to reproduce at least part of the shape created by the punch 4 on the AV part of the wrinkle holder. It concerns an embossing method in which the (AR) 20 extends rearward and conforms geometrically to the level of the zone 14, ie preferably to the zone adjacent to the punch.

The wrinkle retainer AR can also preferably be reproduced in more than half of the molded part AV of the punch, or more than half of the molded part formed by the punch, and even to the whole, but the whole molding is The described continuous-stage method is wasteful and costly to handle.

Similarly, the wrinkle presser AV30 can have a slightly curved surface or contour 8 that facilitates the transfer of the deformation of the steel sheet in the direction of the punch. This means
It can have advantages in certain applications.

In accordance with the most general embodiment of the present invention, the rear wrinkle retainer AR20 extends rearwardly over prior art dimensions and has a greater wrinkle retainer than the right angle of the prior art wrinkle retainer. Over the length, the tip adjacent to the punch (ie, the front end of the rear wrinkle retainer) has a curved shape, ie, a shape that allows for gentle deformation of deep portions of the steel plate.

Although not required, and very preferably, the front wrinkle presser (AV) 30 is also elongated (towards the front), but does not require a conformation of its shape, ie its surface 8 is flat And extends forward beyond the usual dimensions of the prior art.

While applicants do not wish to be limited by any theory, time adaptation of the blank holder AR to at least a portion of the shape of the molded portion formed by the punch in the AV portion of the blank holder is not possible. At the same time, in terms of surface, the tightening can be made more gentle, while better distributing the stress of the press to the steel plate. Thus, the steel sheet has a greater adaptation to stress and can be deformed without forming any traces of clamping, curling or wrinkling, even in the case of «embossed» shaped parts as described above. Is done.

The extension of the wrinkle presser AV30 responds to consideration for better distribution of the tightening stress and the deformation stress. This extension of wrinkle retainer AV30 is not as critical as the fit of rear wrinkle retainer AR20, but has advantageous features in accordance with a preferred embodiment of the present invention.

In addition to the traces of clamping and the disappearance of wrinkles and curls, although not part of the technical problem originally posed, the advantages of the present invention that have become apparent are that the pressure that must be applied by the press is reduced. The point is that it can be significantly reduced.

For the same embossed product, in particular for a bench with 6 seats as described below, a force of approximately 500 t is used in the prior art, but the present invention uses 150 to It is only necessary to use 300 or 350t. Those skilled in the art will appreciate the great industrial advantage in this regard, especially in terms of investment.

According to a particularly preferred form of the invention, the adaptation of the shape of the blank holder AR occupies half of the molded part made by the punch 4 in its AV part.

FIGS. 6 and 7 are non-limiting embodiments of the present invention adapted for stamping manufacture of a bench having a plurality of seats, especially two to six or more seats. FIG. 6 is a perspective view showing that the wrinkle retainer AR100 reproduces, according to this non-limiting specific embodiment, half of the seating molded part molded by the punch 120 in its AV part. . However, according to a variant embodiment which is less preferred than in FIG. 6, the wrinkle foot 100 could also reproduce only a part of the seating shape of the punch, which is less than half.

Within the scope of the general method according to the invention, the wrinkle holder AR can reproduce more than half, or even the whole, of the part formed by the punch, but in the case of the whole, costs are wasted. Therefore, its handling in the continuous step method described below is not easy.

Between the wrinkle retainer AR and the punch 120, a shape adapted to reproduce the desired form of the spacing i formed as having to exist between two successive seating molding parts. There are zones that have

The wrinkle presser AV 110 is extended forward, as described above, with a non-compulsory option, but it will be appreciated that in this embodiment, its contour 8 remains horizontal.

FIG. 7 shows a method according to the invention. It will be appreciated that the steel sheet T is arranged so that the first formed part of the embossing can be formed. Next, the steel sheet on which the first embossing was performed is moved "backward", and the first formed part is placed on the zone 130 of the wrinkle retainer AR100, and then the second embossing is performed. And continue until, for example, six stamping dies are formed.

In FIG. 7, it will be understood that the wrinkle retainer AR 100 reproduces in the B part a half of the seating die, equal to half A of the molded part of the punch 120 in its AV part. , Arrows indicate the direction of movement of the steel plate at each pitch.

In addition, the tool has a shoulder portion 15 that reproduces the distance i that must be present between two successive seating dies between the blank holder AR 100 and the punch 120.
Note that it has a zero.

It will now be appreciated by those skilled in the art that all the advantages of the present invention can be obtained. In particular, the half-pressed curved surface of the wrinkle retainer AR100 makes it possible to reduce the stress (further the embossing pressure) applied to the steel sheet, and as a whole, a steel sheet of 15/10 mm or 12/10 mm, and furthermore, 10, 8/1
For a steel plate of 0 or 6/10 mm, the spacing i can be reduced to a small value of approximately 1 to 3 cm or 5 cm, but in the prior art,
It was not possible to do this without producing marks, wrinkles or curls. In the prior art, i.e. with the tool as shown in FIG. 1, the minimum spacing i that can be produced is 3 for a 15/10 mm steel plate, without the disadvantages mentioned above not being overcome.
To 10 cm and 12/10 mm for steel plates 5 to 12 cm.

Thus, for the same spacing i ordered, the present invention allows the use of thinner steel plates, resulting in a large savings in material costs. If the thicknesses of the steel sheets are the same, the invention can also reduce the spacing, as has already been seen.

Another advantage of the present invention is that a slightly curved molding at the spacing can be obtained. In the prior art, this location was always a flat zone. According to the present invention, the interval i can be reduced to zero without causing wrinkles, traces or curls. In this way, the concave curved portions 115, 116 are exactly adjacent, so that there is a flat portion 117 between the respective molded parts, for example, if the bench is of interest, between the respective molded parts 11, 12 for seating. No rounded parts are formed.

Thus, the present invention allows those skilled in the art to work on these two parameters, spacing and thickness, to better meet customer orders. It is important that the steel sheet is placed on part B of the wrinkle presser 100 (here, part B is a semi-formed part) each time the steel sheet is stamped after the first forming. If the steel sheet is not placed on this support, the steel sheet is bent during the progress of the steel sheet and during the continuous embossing.

Those skilled in the art will recognize that at least a portion of the support portion B can be replaced by other support means, such as a rotating roller, etc., however, the advantage of the present invention is fully obtained only when the wrinkle retainer AR100 has a punch. It will be appreciated that this is when at least a portion (half in FIG. 7) of the 120 mold is being reproduced.

According to a highly preferred embodiment, the embossing method comprises a preforming step of the steel sheet, as shown in FIG. Here, the tool, the punch 4, the matrix 10 and the steel plate T are shown in a cross-sectional view.

According to a preferred embodiment of the present invention, in a non-limiting example of bench making used as an example, the steel sheet is preformed using a bending machine. However, the present invention can use a simplified preform than was necessary in the prior art.

According to a first embodiment of the preform, the steel sheet is preformed along lines a, b, c and rounded sections d, e, f. Every section except the curved surface d is linear. In the prior art, it was necessary to preform the steel sheet according to the curvature of the seat, and in the example of the bench selected here, the bending machine performed 84 operations.

According to the invention, it is possible to use preforms having mainly straight sections a, b, c, e, f and only one rounded section d, for a total of 84 Only 19 bends are required instead of bends. As a guide, work is performed 14 times only at the folds between sections b to c.

The present invention is also directed to a first variant embodiment in which the preform is formed in a, b, c, d, g (straight line) sections. The invention is also directed to a second variant embodiment in which the preform is formed in sections a, h (straight part), d, e, f. The invention is further directed to a third variant embodiment in which the preform is formed in a, h (straight line), d, g (straight line) sections.

As has been seen above, these three alternative embodiments can further reduce the number of bending operations, ie save costs.

According to the present invention, the steel sheet can be positioned (as shown in FIG. 7) without taking into account that the steel sheet is vertically aligned with the punch and the matrix. The steel sheet can be shifted with respect to the vertical rows, for example, by a distance m. Next, the press is slowly lowered, and the steel plate itself is centered on the tool.

The present invention opens up another possibility from the technical problem initially posed, namely the possibility of changing the “pitch” required by the tool. In the prior art, for example, when trying to change the embossing pitch in order to adapt the same type of product to orders from different customers, which may require different dimensions, the entire tool must be The only way was to disassemble and replace with a new tool. Therefore, as many tools as different pitches are required, and all tools must be handled.

Conversely, due to the unique design of the wrinkle retainer AR, punch and matrix assembly of the present invention, as shown in FIG. 8, by cutting transversely (ie, perpendicular to the direction of travel of the steel sheet). Design a tool separated into two parts, thus forming the basic tool with the minimum pitch, and then the desired value E for the change in pitch
The two parts formed by said cutting of the tool are separated and inserted into E by a suitable set of four disassemblable parts, called wedges of the matrix 460, punch 480, wrinkle retainers 490 and 420. By doing so, the pitch can be changed at will. These parts can be secured by some mechanical means such as bolting or the like.

The advantage of this option is that instead of having to replace the entire tool with just one tool and one or several sets of wedges, it is adapted to each of the actual standards and practices of the target sales market. Is possible.

The invention also relates to a plurality of seats, in particular two to six or eight, requiring a plurality of successive seating moldings or dies 11, 12, separated by a distance i.
A tool as described above, suitable for the manufacture of benches with a further larger number of seats, wherein the stamping pitch can be changed at will and the tool is located in the middle of the punch (4, 12).
0) is designed with two parts separated by a transverse (ie perpendicular to the direction of travel of the steel sheet) cut, so that a basic tool is formed with a minimum pitch, the two parts being changed in pitch Of the matrix 460, wedges 490 and 420, which can be separated from each other by a desired value E of A tool characterized in that it has one or several sets.

In particular, the invention applies to the embossing of any part similar to the above-described embodiment, in particular to any part having a close repeated stamping die, but also causes problems such as stamping and wrinkling or curling. It is also applicable to embossing of thin steel plate parts having non-repetitive shapes.

Furthermore, a hole is formed in the “bottom” of the bench, ie between the zones 10 and 11 of the bench, in order to drain the rainwater, in particular by means of a stamping tool adapted to the bottom of the matrix 10 located in front of the punch. It can be created directly.

The present invention, as already explained, generally embosses or temporarily transforms steel plates of various thicknesses by utilizing very small press forces, approximately half the conventional force. , With a temporary or final coating or finishing layer,
It is possible to emboss plates made of various conventional steels or stainless steels or of various conventional alloys, or alternatively to emboss plates made of plastic material or any type of mixture. Depending on the material to be processed, the press and the tool can also be hot presses.

The present invention is directed to the above-described embossing method, corresponding tools and corresponding preforms, and also the products and products thus obtained. The present invention also provides the above-described embossing method, which is adapted by conventional methods by those skilled in the art to emboss products and goods of any shape not inconsistent with the description herein;
The corresponding tools and the corresponding preforms, as well as the products and products thus obtained, are covered.

Those skilled in the art will be able to adapt the invention to the variant embodiments and options which belong directly to and are the subject of the invention.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a stamping press and a tool according to a conventional technique.

FIG. 2 schematically shows the general shape of a bench made of stamped steel, showing an example of a non-limiting application of the invention.

FIG. 3 is a schematic sectional view of a curved surface of a bench to be obtained.

FIG. 4 is a cross-sectional view of a punch and AV and AR wrinkle retainer assembly illustrating the general principles of the present invention.

5 shows the method of adapting the general principle of the invention according to FIG. 4 to the production by embossing of a bench with a comfortable seating part with a recessed comfort at a narrow spacing i, the left of an embossing press and a tool. It is a (GD) cross sectional view from right to left.

FIG. 6: Wrinkle holders AV and A adapted for the production of benches with a plurality of seats, in particular with 6 seats.
It is a perspective view which shows the outline of R and the assembly of a punch.

FIG. 7: Wrinkle holders AV and A adapted for the production of benches with multiple seats, in particular with 6 seats
FIG. 7 is a side cross-sectional view showing a non-limiting application of the present invention to an assembly of R and a punch.

FIG. 8: Wrinkle foot A adapted for the manufacture of a bench with multiple seats, in particular with 6 seats
FIG. 9 is a perspective view of one non-limiting example of applying the present invention to an assembly of V and AR and a punch, comprising FIGS. 8a (matrix) and 8b (punch), according to an advantageous variant, embossing; And an assembly of a member including a wrinkle presser AR and a punch.

FIG. 9 is a cross-sectional side view showing the principles of a prior art embossing press that can be utilized in accordance with the present invention, with suitable tools. In this conventional press, 600 is a slider device, 900 is a matrix, 700 is a punch, 950 is a blank holder, and 800 is a table (
Fixed), 980 indicates struts, F1 and F2 indicate already known relative movements.

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL , IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW

Claims (33)

[Claims] An embossing method in which a plate (T) is embossed between a matrix (10) and a punch (4) sandwiched between a front wrinkle presser (AV) and a rear wrinkle presser (AR). AR20 extends posterior to the prior art dimensions and has a curved shape on its tip adjacent the punch 4 (ie, the front end AV of the rear wrinkle retainer AR), ie, a right angle as in the prior art wrinkle retainer. Rather, the embossing method has a shape that allows gradual deformation of the deep part of the plate over a greater length of the wrinkle retainer. 2. Reproducing at least a part of the molded part formed by the punch 4 in the AV part of the wrinkle retainer, or just half or more than half, and even the whole of the molded part formed by the punch 4 2. A front wrinkle press (AV) according to claim 1, characterized in that, for reproduction, a rear wrinkle press (AR) 20 extends rearward and is adapted to the area of the zone 14 adjacent to the punch 4. ) And a stamping method in which the steel sheet T is stamped between the matrix 10 and the punch 4 clamped by the rear wrinkle retainer (AR). 3. The embossing method according to claim 1, wherein the front wrinkle presser (AV) 30 also extends (toward the front). 4. The wrinkle retainer AR according to claim 1, wherein the geometrically fitting part occupies half of the shape formed by the punch in its AV part.
The embossing method according to any one of the above. 5. Manufacture of a bench having a plurality of seats, in particular two to six, or eight or more seats, requiring a plurality of successive seating moldings or dies separated by a distance i. A method suitable for wrinkle retainers AR10
0 (in its B part) can reproduce at least a part, preferably just half (A), of the seating molding part 11, 12 formed by the punch 120 in its AV part, or the molding formed by the punch The embossing method according to any one of claims 1 to 4, wherein a tool capable of reproducing half or more of the part and even the entire part is used. 6. The manufacture of a bench having a plurality of seats, in particular from 2 to 6, or 8 or more seats, requiring a plurality of successive seating moldings or dies separated by a distance i. In an adapted manner, the zone 150, which has been adapted to reproduce the desired shape at a spacing i defined as having to lie between two consecutive seating moldings 11, 12, is wrinkled. Presser A
The embossing method according to claim 5, wherein the embossing method is provided between the R100 and the punch 120. 7. Having a plurality of seats, in particular from 2 to 6, or 8 or more seats, requiring successive seating moldings or dies 11, 12 separated by a distance i. The method according to claim 5 or 6, wherein the method is adapted to the manufacture of a bench, and the wrinkle retainer (AV110) extends forward. 8. It has a plurality of seats, in particular from 2 to 6, or 8 or more seats, requiring successive seating moldings or dies 11, 12 separated by a distance i. The method according to any one of claims 5 to 7, wherein the method is suitable for manufacturing a bench, and wherein the contour of the wrinkle presser AV remains horizontal. 9. The wrinkle presser AV110 may have a slightly curved surface or contour 8 to promote the displacement of the deformation of the plate towards the punch.
8. The embossing method according to claim 7. 10. A steel sheet T is placed so as to form a first embossed part,
Next, the plate on which the first embossing has been performed is moved backward, and the molded portion is placed on the AV zone 130 of the wrinkle retainer AR100, and a second embossing is performed. The embossing method according to any one of claims 1 to 9, wherein the embossing is continued until 3, 4, 5, 6, 7 or more times of embossing are performed. 11. A wrinkle presser AR100 is provided with a punch A
The embossing method according to any one of claims 1 to 10, wherein a half of the seating embossing die, which is equal to half of the molding portion of the V portion, is reproduced. 12. A tool is provided between the wrinkle retainer AR100 and the punch 120.
The method according to any of the preceding claims, comprising a shoulder portion (150) that reproduces the spacing (i) that must be present between two successive seating dies. 13. 15/10 mm or 12/10 mm or 10/10,
13. The embossing method according to claim 1, wherein a pressing force of approximately 150 to 300 t or 350 t is used for 8/10 or 6/10 mm plates. 14. The shoulder 150 forming the distance i may be 15/10 mm or 12/10 mm, or alternatively up to a value of about 1-3, or 5 cm for a 10/10, 8/10, 6/10 mm plate. The embossing method according to any one of claims 1 to 13, wherein the value is more preferably reduced to a value of i = 0. 15. The apparatus according to claim 1, wherein at least a part of the support portion B of the wrinkle retainer AR is replaced with another support means such as a rotating roller.
5. The embossing method according to 4. 16. The embossing method according to claim 1, wherein the embossing method comprises a preforming step of the plate, preferably using a bending machine. 17. The plate is preformed by lines a, b, c, rounded parts d, e, f, every section being straight except for the curvature d, or alternatively the preform is , B, c, d, g (straight lines) or alternatively the preform is formed of a, h (straight lines), d, e, f, or
The embossing method according to claim 16, wherein the preform is formed in sections a, h (straight section), d, g (straight section). 18. Positioning the plate T without regard to vertically aligning the punch 4 and the matrix 10, the plate can be shifted, for example, by a distance m, for example with respect to the vertical alignment row, and then the press can be slowed down. The embossing method according to any one of claims 1 to 17, wherein the plate itself is centered on a tool. 19. A wrinkle retainer AR20 having a matrix 10 and a punch 4 sandwiched between a front wrinkle retainer (AV) and a rear wrinkle retainer (AR), wherein the wrinkle retainer AR20 extends rearwardly from prior art dimensions. Over the longer length of the wrinkle foot, rather than at a right angle position like a wrinkle foot, on the tip adjacent to the punch 4 (i.e., the front end of the rear wrinkle foot), i.e. gradually the deep part of the plate. The tool for performing the embossing method according to any one of claims 1 to 18, wherein the tool has a shape capable of performing a curved shape. 20. A wrinkle presser for reproducing at least a part of a molding portion formed by a punch 4 in an AV portion of the wrinkle presser, or half or more than half or even the whole of a shape formed by a punch. 20. The tool according to claim 19, wherein the (AR) 20 extends rearward and is geometrically adapted to a portion of the zone 14 adjacent the punch. 21. Tool according to claim 19, wherein the front wrinkle presser (AV) 30 also extends (forward). 22. A wrinkle retainer AR having a geometrically fitting portion having an AV
22. A tool as claimed in any one of claims 19 to 21, reproducing a half A of the shape formed by the punches in the part. 23. A plurality of seats, in particular two to six, or eight or more seats, requiring a plurality of successive seating dies or moldings 11, 12, separated by a distance i. Tool for producing a bench having a wrinkle retainer AR100 reproduces at least a part, preferably half, of the seating molding parts 11, 12 formed by the punch 120 in its AV part. 23. A tool according to any one of claims 19 to 22, wherein the tool reproduces half or even the entire molded part formed by the punch. 24. A plurality of continuous seating dies 1 separated by an interval i.
Multiple seats, especially 2 to 6, or 8 requiring 1, 12 or molded parts
A tool adapted to produce a bench having one or more seats, to reproduce the desired shape of the spacing i defined as having to be between two seating continuous molding parts 150 having a shape adapted to
The tool according to any one of claims 19 to 23, wherein is present between the wrinkle retainer AR and the punch 120, and i becomes 0 in some cases. 25. A plurality of successive seating dies 1 separated by an interval i.
Multiple seats, especially 2 to 6, or 8 requiring 1, 12 or molded parts
2. A tool adapted to manufacture a bench having one or more seats, wherein the wrinkle foot AV110 extends forward.
25. The tool according to any one of 9 to 24. 26. A plurality of seats, in particular 2 to 6, or 8 or more seats, requiring a plurality of successive seating dies 11, 12 or molded parts, separated by a distance i. Tool for producing a bench having a shoulder 150, which reproduces the distance between the blank presser AV 100 and the punch 120 that must be present between two successive seating dies. The tool according to any one of claims 19 to 25, comprising: 27. The tool is separated by a transverse cut (ie perpendicular to the direction of travel of the steel sheet) at the center of the punch (4, 120) so that the pitch of the embossing can be changed at will. A basic tool of minimum pitch, which is composed of two parts and can be separated from one another by the desired value E of the change in pitch, and the tool is inserted into the gap E with suitable play Adapted to
27. A tool as claimed in any one of claims 19 to 26, comprising one or more sets of four parts that can be disassembled, called wedges of wrinkle retainers 490 and 420, punch 480 and matrix 460. 28. Manufacture of a bench having a plurality of seats, in particular from 2 to 6, or 8 seats, requiring a plurality of successive seating dies or moldings 11, 12, separated by a distance i. 28. The tool according to claim 27, adapted to: 29. A tool according to claim 26 or 27, wherein the wedges of the matrix 460, the punch 480 and the wrinkle retainers 490 and 420 can be fixed by any mechanical means such as bolting. 30. An embossing press provided with the tool according to claim 19. 31. Stamped goods and products, in particular having repeated continuous stamps, wherein the stamps are close or completely adjacent (i = 0), in particular a plurality, in particular six or more, A bench having the above seats, wherein the press according to any one of claims 1 to 18 and the tool according to any one of claims 19 to 29, or a press according to claim 30. An embossed product characterized by being manufactured using. 32. Normal thicknesses, usually of various steel or stainless steel, or of various conventional alloys provided with a temporary, temporary or final coating or finishing layer. 32. The product according to claim 31, characterized in that it is made of 15/10, 12/10 or 10/10 mm steel plates or alternatively plates made of plastic material or of any type of mixture. 33. The matrix 460, punch 480 according to claim 27.
, Wedge sets of wrinkle retainers 490 and 420.