ES2229043T3 - PLATE ADVANCE DEVICE IN A PUNCHING INSTALLATION. - Google Patents

Abstract

The feed unit (1), to insert plates into a stamping machine (2), has two advance push systems (7-10,12-15) over the material movement plane (20). The feeds transfer the plate workpiece between them so that, in the transfer position, only the grips (9,10) of the first system grip through the second feed system. A common support (6) carries and guides the movements of the two feed systems.

Description

Sheet metal feed device in an installation die cut

The invention concerns a method according to the preamble of claim 1, to a device according to the preamble of claim 3 and a die-cutting installation With such device.

Such feed systems serve to feed sheet material, for example sheet steel or aluminum, to a die press that dies raw parts to from the plates in accordance with the tool used, by example round caps for boats.

It is known by the documents DE-C-43 09 949 and DE-C-43 45 184 a feed system of the exposed genre for a die press with a tool of two  rows, in which the advance is made with two advance mechanisms that transfer from one to another a plant located in the press of die cut The first advance mechanism has two clamps grip that are arranged in the intermediate space of two sliding surfaces for the plates and which are driven by actuating means arranged below the sliding surfaces. A travel drive arranged laterally with respect to one of the surfaces of sliding provides the movement of advance. The second feed mechanism features a skate that can move over of the sliding surface and carrying arms with tweezers grab The skate is moved by another drive.

Document DE-C 41 35 901 shows a feed system with a feed mechanism and a skate of supply, making a transfer of the respective plate during the first die cutting step. It shows in this document a two-row die cutting tool, so that, in addition, the plate is moved in the direction perpendicular to the direction of advance to achieve a die cut as dense as possible of the iron. In the document DE-C-34 37 642 another shown feed system

The invention is based on the problem of creating a procedure for advancing plates and a feed device, that can adapt in the simplest way to different formats of sheet metal plates and make possible the advance of even plates of very narrow sheet.

This problem is resolved in the procedure of the class cited at the beginning with the characteristics of the claim 1.

However both advance mechanisms are mounted above the plate support plane, generally the bench that forms the plane of advancement, a regulation is possible of these advancement mechanisms to adapt them to the width of the sheet irons, without corresponding rebates being necessary on the plane or on the bench, which worsen the flat seat of the sheet. Also, as only the means of grip of the second feed mechanism go through the first advancement mechanism while the rest of the second mechanism of advance always remains behind the first mechanism of Feed, width adjustment down to very strips of sheet metal narrow can be done without problems or the width adjustment of the first advance mechanism is not hindered by the structure carrier of the gripping means of the second mechanism of Advance.

Also, the invention is based on the problem of create a feed device that supports a retrofit as much simple possible to different plate formats and can do advance also very narrow plates.

This issue is resolved with the features. of claim 3.

In what follows, they are explained in more detail Exemplary embodiments of the invention with reference to Figures. They show in these:

Figure 1, in a very schematic form, a view in plan of an advance device;

Figure 2, a plan view according to Figure 1 with the plates in the transfer position; Y

Figure 3, a side elevation of the device advance also shown only schematically.

Figures 1 to 3 show schematically in plan view and side elevation of the feed device 1, which is mounted in front of a die-cutting installation 2 that It presents a tool 4 that punches objects 5 from an iron of sheet 3 (shown by way of example punched holes), so that, after die cutting, these objects are presented in individualized form and sheet metal 3 subsists only Still a residual grid. The kind and mode of die cutting is not They are explained here in detail, as they are known. Can have place in a known way a die cut with a two-row tool, of so that the respective sheet has to be pushed only in the feed direction A through the die cutter 2, or a die cut with a tool of a row, in which case the sheet has to be made still move forward in a direction perpendicular to the direction A, which is known. Next, the device of feed 1 so that it only performs the feed in the direction A. If a reciprocating motion is also necessary perpendicular to it, it can be done without problems by other drive elements, which, however, is not Explain in detail in the following.

Feed device 1 present preferably a support and guide member 6 in which they are arranged skates 7 and 12 that can move in the direction forward and in the opposite direction. The skates are moved in the forward direction and in the opposite direction by a drive 17 not shown in detail, for example by means of toothed belts or chains that run around rollers 18, 19 of the support member 6 and to which the skates are fixed. Naturally, other drives can also materialize any of the skates with spindles or with drives linear in a common way for the expert and without problems. He skid drive is controlled by a system of control 25 that can also receive signals from sensors position 26 for the sheet and which is also connected to the system control 27 for the installation of die cutting 2 in order to Synchronize feed and die cut. The control system 25 You can also recognize the position of the skates by sensors or emitters arranged in the drive 17.

Feed device 1 works in a manner yes known in such a way that the first advance mechanism 7-10 tighten a sheet 3 unstacked from a non-stack shown and deposited on the advance bank 20, and makes move towards the die cutting facility. One second 12-15 feed mechanism deals at the same time of driving a previous plate through the installation of die cut 2, this being done in a known manner in synchronism with the die cut movement. In a transfer position, which is represented in Figure 2, a sheet introduced in the punching system 2 by the first feed mechanism 7-10 is transferred to the second advance mechanism 12-15 This transfer can be made, by example and as shown in Figure 2, during the first die cut, but naturally it can also be done later After some die cutting processes. The transfer is effect by making the gripping means 10 of the first mechanism of feed and gripping means 15 of the second feed mechanism reach the same feed height, so that the means of grab 15 can grab the sheet that has been retained so far by gripping means 10, releasing these the sheet.

The gripping means 10 and 15 have components like tweezers known per se that can be operated in the direction of opening and closing to release or grip the respective sheet. The gripping means 10 and 15 have, in addition, extensions 9 and 14, respectively, which, seen in the direction of transport, they look back and they join the clamps of grip with guide and drive elements 8 and 13 in the skates 7 and 12, respectively. The guide elements and drive 8, 13 are movably fixed on the skates 7 and 12, respectively, so that your position along the corresponding skate. Through the extensions 9 and 14 can also be carried out the opening and closing of the clamps. Guide elements 8 and 13 are adjustable on the skate transversely to the direction of advance A, having been drawn with B and B1, respectively, their mutual distance in Figure 2. The regulation along the skate 7 or 12 is carried out to adapt to the respective sheet format. How the first one can be seen especially well in Figure 2 feed mechanism 7-10 is configured so that in the transfer position only its gripping means 9, 10 cross the second advance mechanism 12-15, while the guide means and drive 8 and skate 7 of the first drive mechanism remain behind the second advance mechanism 12-15, seen in the forward direction. This allows a simple adjustment of the distance B of the means of grip 9-10 of the first feed mechanism with independence of the second advancement mechanism and also the adjustment single of the distance B1 between the gripping means 15 and the Second advance mechanism. The adjustment of these distances B, B1 it is also simplified by making both advance mechanisms mounted above the bench 20 or the forward plane. Is all as a result good accessibility for adjustment purposes or overhaul and also provides independence from of holes in bed 20, such as those needed in advance mechanisms that attack from below on the sheet. He support member 6 may be fixed here to the frame of the machine with the help of fixing means not shown above same or next to it.

Claims (5)

1. Procedure for advancing consecutive plates (3) towards a die-cutting installation (2), in which, during the die-cutting of a sheet, a transfer of a first feed mechanism (7-10) is carried out which grips the sheet a a second advancing mechanism (12-15) that grips the sheet, the second advancing mechanism entering with its gripping means (14, 15) in the die-cutting installation (2), characterized in that both advancing mechanisms (7- 10; 12-15) are mounted above a plane (20) of support of the sheet forming the advance plane and the first advance mechanism (7-10) is arranged behind the second advance mechanism (12-15 ), seen in the forward direction (A), such that, in the transfer position, said first mechanism crosses only with its gripping means (9, 10) the second advance mechanism (12-15), while that the guide parts (7, 8) remain behind the second feed mechanism (12-15). 2. Method according to claim 1, characterized in that the first and second advancement mechanisms (7-10; 12-15) are supported and guided, in mobile and driven form, on a support and guide member (6) arranged by above the plane (20) of support of the sheet. 3. Feed device in a die-cutting installation for advancing consecutive sheet irons (3) towards this installation, with a feed mechanism (12-15) that presents means (14, 15) for holding the sheet metal that are configured to enter the die-cutting installation (2), and with another feed mechanism (7-10) that have means (9, 10) for gripping the sheet and that is configured to bring the sheet metal to a transfer position to deliver them to the first mentioned advance mechanism (12-15), characterized in that both advance mechanisms are arranged above a bench (20) that forms the advance plane, and because the second mentioned advance mechanism (12-15) it is configured with means (9, 10) for gripping the sheet which, in the transfer position, extend from a position located behind the first advance mechanism to the transfer position. 4. Feed device according to claim 3, characterized in that the feed mechanisms (7-10; 12-15) are held in a driven and movable manner in a common support and guide member (6) disposed above the bench (twenty). 5. Installation of die cutting with a device of advance according to claim 3 or 4.