JPH0810859A - Method and device for forming molding part in sheet panel bypressing - Google Patents

Abstract

PURPOSE: To prevent a lowering of high productivity of an automatic welder and a conveyor equipment by means of the press-marking by sending a sheet panel along a conveying path and press-marking the same without interrupting the sending. CONSTITUTION: A disk 12 having protrusions and a disk 12' having grooves are rotated. The sheet panel 4 is press-marked while the sheet panel 4 is bitten between the disks 12, 12'. As the press-marking is executed during conveying motion, it is unnecessary to stop the sheet panel 4 and to accelerate the same again. Therein, male and female parts of the press-marking tool also can take linear reciprocal motion while synchronizing the displacement of the sheet panel 4, in place of the rotational motion. As the press-marking tool is jointed to the welder and is assembled with oiling and brushing stations, conveying expenses of the sheet panel 4 are preferably cut down.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for stamping a molding on sheet panels having different thicknesses or welded sheet metal pieces having different thicknesses, and an apparatus for carrying out the method. .

[0002]

BACKGROUND OF THE INVENTION More and more seat panels are manufactured, especially for the automotive industry and for other uses, which are manufactured from flat sheet metal parts of different thickness, for example by roller seam welding (Rollnahtschweissung) or It is composed by laser welding. The seat panel is formed by deformation into a structural portion, for example, an automobile / car body portion, and such a constituent portion has characteristics accurately defined based on the material thickness that differs for each section. In this case, the sheet panels are produced almost automatically in large quantities on equipment including automatic welding machines, conveyor equipment and storage stations. When stacking such sheet panels, the piles are inclined due to the non-uniform thickness of the sheet panels, and the inclined piles cannot be handled or transported. Therefore, the thin and relatively thick sections of the sheet panel can be pressed with a conventional press while the sheet panel is stationary during the stamping process to stamp a groove (eg, a small recess or molding). It is known to allow the piles to be evenly stacked by means of the grooves.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the stamping process for stamping a forming part on sheet panels having different thicknesses, thereby stamping high production capacity of automatic welding machines and conveyor devices. To make full use of it so that the stamping process can be carried out economically. Furthermore, it is an object to provide an apparatus for performing an embossing method for embossing a forming part on sheet panels having different thicknesses.

[0004]

SUMMARY OF THE INVENTION To achieve the above object, in the method according to the present invention, a sheet panel is fed along a conveying path and is stamped without interruption of the feeding process. Furthermore, in order to carry out the method, the arrangement according to the invention is provided with an embossing tool arranged in the conveying path, so that both the engraving direction movement and the conveying direction movement are carried out by the embossing tool. It has become.

[0005]

Embodiments FIGS. 1 and 2 show a seat panel (thin plate: Platin.
e) 4 schematically showing the seat panel (Blechtaf
el) is formed by welding thin plate portions 1, 2, 3 having different thicknesses. Weld seams are indicated by reference numerals 5 and 6. The sheet metal parts 1, 2, 3 usually have different thicknesses t1, t2, t3. The seat panel 4 is, for example, a so-called tailored blank in the automobile industry.
It is used as a red blank) to produce a deep-drawn body part with precisely defined characteristics. For this reason, the seat panel 4 is transformed into a desired component as a whole. The sheet panels 4 are manufactured in large numbers and at high speed by means of fully automatic or partially automatic machines, which have automatic welding machines, stacking machines and conveyor machines. Each welding seam 5 and 6 is 10m / by automatic welding machine.
Welded at a speed of a minute or more. Intermediate products, eg partial panels consisting of sheet metal parts 1, 2 and the final product (ie sheet panel 4) are stacked and stored. Such a sheet panel 4 is used, for example, in a pallet 7
In order to arrange it in a substantially uniform pile 8 on top (FIG. 3), the sheet panel is provided with stamped moldings, by means of which sheet thickness differences are compensated for due to stacking.

FIG. 4 schematically shows an enlarged edge area 13 of the pile 8. In this case, the seat panel 4,
4 ', 4 "individual thin plate parts 1, 1', 1" are formed parts (A
usfor-mung) 9, 9 ′, 9 ″, the forming part corresponding to the thin sheet part 1, 1 ′, 1 ″ in the range of the forming part, approximately corresponding to the thickness t 2 of the thick sheet part 2. It is designed to give thickness. The thin plate portion 3 may also be provided with a similar molding, for example a groove (Sicke). By providing the moldings, the sheet panels 4 are stacked in a substantially uniform, non-tilting pile 8. The molding portion 9 is formed at any time. The individual sheet metal parts can already be stamped or pressed before welding, the partial panels can be treated accordingly or the finished sheet panel 4 can be provided with moldings. Such moldings normally serve only for stacking and have no function in the finished sheet metal part. Therefore, usually as few as possible and as little as possible of the forming part is stamped, so that the finished sheet metal part is not damaged by the forming part.

FIG. 5 schematically shows the stamping of the molding according to the known art. In this case, the sheet panel 4 or a part of the sheet panel is placed on a conveyor and fed through a conventional stamping device with a master 11 and a male 11 '. The sheet panel is stopped on a conveying path, that is, a conveyor line to form a molding in the sheet panel 4,
Next, the molding part is formed in the seat panel by moving the mother mold and the male mold so as to approach each other in the vertical direction. The seat panel 4 is then accelerated again and sent out of the stamping device. Obviously, in the known process, the sheet panel must be stopped on the conveyor line each time, kept stationary for a predetermined time and then accelerated again. This is inconvenient for high speed sheet panel manufacturing and requires a large space. Such an embossing device will limit the production speed. Connecting multiple embossing stations in parallel is an uneconomical measure, and in addition to the cost of purchasing another embossing device, changes must be made to the control and operating mechanisms of the manufacturing equipment.

FIG. 6 is a schematic view of an embossing device according to the present invention. The sheet panels 4 or partial panels are likewise fed along a conveyor device. The embossing device is designed such that the embossing takes place during the transport movement, so that it is not necessary to stop the seat panel 4 and to accelerate it again. Such an embossing device is schematically shown by a rotatable disc 12 with projections and a rotatable disc 12 'with grooves. Instead of the central disc 12 with projections, for example an eccentric disc can also be used.

FIGS. 7 and 8 schematically show an embodiment for forming an indented portion, that is, a molding portion. 7 is a side view and FIG. 8 is a partial cross-sectional view taken along the line AA of FIG. On the upper side of the sheet panel 4 which is placed on a conveyor device (not shown) and is fed in the direction of the arrow, a disc 22 having a protrusion 23 on its peripheral surface is eccentrically arranged about a shaft. The disc 22 has an arrow 27 centered on the rotation axis 28.
Can be eccentrically rotated in the direction of by a drive device (not shown). On the lower side of the seat panel 4 or of the conveyor device, an eccentrically supported, preferably also rotatable disc 22 'is provided (rotation axis 28', rotation direction 2).
7 '), the disc is provided with grooves. In this case, the protrusion 23
The groove and the groove form a male mold and a mother mold for stamping the molding portion 9 in the seat panel 4. In the stationary state, the disc 22 is in a position where the protrusion occupies a standby position 24 shown by a broken line. In this position, the sheet panel 4 can pass along the conveyor device between both discs 22, 22 'unhindered due to the eccentric arrangement of the discs. When a control device (not shown) generates a command for stamping the forming part on the sheet panel 4 which is fed between the two disks, the disk 22 is driven in the direction of the arrow 27 and accelerated. As a result, the projection 23 is accelerated from the standby position 24 and strikes the seat panel 4 at a peripheral speed substantially corresponding to the transport speed of the seat panel 4. When the projection 23 hits the seat panel, the projection stamps the desired molding 9 into the seat panel. Disc 22 'with grooves as a master for the projection 23 acting as a male
Is used. Advantageously, said disc 22 'is also disc 22
Or may be driven in synchronization with the feeding of the seat panel 4. After the stamping of the molding portion 9, the protrusion 2 is formed.
The disk 22 with 3 again occupies the standby position 24. For this reason, the disc 22 is gradually braked after it has entered the groove, or after the stamping of the forming part, has rotated towards the rest position. Due to both eccentricities, the seat panel will not contact the disc or roller.

The disc 22 with the projections 23 may be constructed as shown in FIG. In this case, the disc 22
Is assembled from three individual discs 30, 31, 32. The central disc 31 has the original projection 23. The disks 30, 32 are also eccentric in the region of the projection 23 and have shoulders 38, 39. The same is the disc 22 'assembled from three discs 34, 35, 36.
The discs 34, 36 are likewise eccentric and have shoulders 40, 41, which cooperate with the corresponding shoulders 38, 39 to seat the seat panel. 4 is held at the time of stamping. In this case, the eccentric disc 22 ′ is driven synchronously with respect to the disc 22 and the shoulders 38, 40, 39, which cooperate with the projections 23,
41 acts on the seat panel 4 at the same time.

Of course, for example, an eccentric one as a male type
It is also possible to implement using one disc and a plurality of discs with grooves formed as a master, and any other embodiment is also possible. The important thing is that the stamping is done on the seat panel
Of the feed motion, which is almost undisturbed or only decelerated. For this reason, the stamping tool does not only perform a vertical stamping movement, but also a movement in the feed direction. The depth of stamping is disc 2
It can be adjusted within a predetermined range by vertically adjusting the rotation axes of 2, 22 '. It is also possible to use different disks with different protrusion heights or different groove depths. The start signal for performing the embossing is generated by a control device which is also known in the art and which is also used in the conventional embossing method. The control device acts in such a way that the forming part is not always stamped in the same place, which is well known and FIG.
It is shown in.

FIG. 9 schematically shows another embodiment.
In this case, the stamping tools 50, 51 perform a longitudinal movement along the tracks 52, 53 in addition to the vertical movement for stamping the forming part, so that they follow the feeding of the seat panel 4. ing. After stamping the forming part, the stamping tool is again separated from the seat panel and returned to the standby position. Male and female movements are indicated by arrows ad. The stamping movement is produced by the operating members 54, 55, the longitudinal movement is carried out in one direction by the feed movement of the seat panel itself and in the other direction by a drive device (not shown). Also works in the feed direction if necessary.

The stamping is preferably carried out immediately after each welding, for example in combination with an oiling and brushing station for the seat panels. In this way the handling of the seat panel is significantly simplified throughout the device.

[Brief description of drawings]

FIG. 1 is a plan view of a welded seat panel.

FIG. 2 is a side view of the seat panel of FIG.

FIG. 3 is a side view of a pile formed by stacking sheet panels.

FIG. 4 Partial detail view of the pile

FIG. 5 is a schematic view of a known embossing device.

FIG. 6 is a schematic view of an embossing device according to the present invention.

FIG. 7 is a schematic side view of an embodiment of an embossing device according to the present invention.

8 is a partial cross-sectional view of the embossing device of FIG.

FIG. 9 is a schematic side view of another embodiment of an embossing device.

[Explanation of symbols]

1,2,3 thin plate part, 4 seat panel,
5,6 Weld seam, 12,12 'disk, 22 disk, 23 protrusion, 24 standby position,
28 axis of rotation, 30, 31, 32; 34, 35,
36 discs, 38, 39; 40, 41 shoulders, 5
0,51 Pressing tool, 54,55 Operation member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Marx Meier Switzerland Gechlingen Zum Tahl Hof (no address) (72) Inventor Werner Urech Switzerland Kaiser Stourline Gasse 28

Claims (12)

[Claims] 1. A method for stamping a forming part on sheet panels having different thicknesses, characterized in that the sheet panels are fed along a transport path and stamped without interruption of the feeding process. A method for stamping a molded part on a panel. 2. The method according to claim 1, wherein the stamping is carried out by a stamping tool and the stamping tool is moved both in the stamping direction and in the feed direction. 3. The method according to claim 2, wherein the movement of the embossing tool is carried out on the conveying path in connection with the feeding of the sheet panel. 4. An apparatus for stamping a forming part on sheet panels having different thicknesses, wherein stamping tools (12, 12 '; 22, 22') arranged in the conveying path are provided. An apparatus for stamping a forming portion on a sheet panel, wherein the stamping tool is configured to perform both a stamping direction movement and a conveyance direction movement. 5. The stamping tool comprises a first member (22) rotatable about an axis of rotation (28), the member being eccentrically arranged with respect to the axis of rotation. Male type (2
The device of claim 4 having 3). 6. The stamping tool has a second member (22 ') rotatable about an axis of rotation (28'),
6. The member forms a master mold for the stamping male mold.
The described device. 7. The at least first member (22) is adapted to be driven in connection with the feeding of the transport path.
Or the device according to 6. 8. A first member (22) having an eccentric disc (31), said disc forming an embossed male die. The apparatus according to item 1. 9. Another two discs (30, 30) with a first member (22) arranged on either side of one eccentric disc (31).
32) The device according to claim 8, characterized in that it comprises a shoulder (38, 39) each of which has an eccentrically arranged shoulder. 10. A second member (22 ') has a central disc (35) and two discs (3) connected to both sides of said disc.
The device according to any one of claims 6 to 9, characterized in that each of the disks on both sides has an eccentric shoulder (40, 41). 11. The first member comprises a roller having protrusions eccentrically arranged on the peripheral surface, the protrusions forming a stamping male die, and the second member having an annular groove. 8. A device as claimed in any one of claims 5 to 7 which comprises a roller with. 12. At least one embossing tool is provided, which is part of an embossing station connected to the welding machine or connected directly behind it, and in particular a seat. An apparatus according to any one of claims 4 to 11 in combination with an oiling and brushing station for processing sheet panels in order to keep the transportation costs of the panels as low as possible.