DE1552032A1 - Press line - Google Patents

Description

Machine factory Weingarten A-G, Weingarten / Württemberg

Press line

The invention relates to a press line for Production of sheet metal parts, assembled from a drawing press and any number of subsequent presses.

Press lines composed of one are known Drawing press with several pole presses, in which the workpieces with a transport arm, the so-called "Iron Hand" are transported between the presses, However, this transport system has the disadvantage that the adjustment of the transport arms to the different Workpieces is difficult «Furthermore, press lines are known that run through the entire press line Have gripper rails that are driven either by the head press or by a special drive will. The disadvantages of this arrangement are that the

Pole

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Subsequent presses can only work in a single stroke and that because of the security controls of the movements the press ram and gripper rails do not limit the number of strokes can be increased arbitrarily high. Furthermore, the press spacing must be exactly a multiple of the feed rate, tes amount.

The object of the invention was now to sohaffen a press line in which the maximum possible number of pieces the drawing press can be achieved without the. Functional reliability of the workpiece transport impaired will. The system should be able to be extended, shortened or converted at any time. Every press should can also be used as a single machine.

This object is achieved by the invention by combining the following features:

a) All presses work continuously with the same number of strokes.

b) Each press has an independent gripper rail transport device with lifting, closing and feed movements, which are mechanically linked to the press drive is coupled.

c) Independent transport devices are arranged between the presses, which are synchronized with the Grab rail transport devices, but with

of which 009809/0600 BAD ORlGiNAL

\ independent feed steps and total feed speeds work, which are either driven by the press drive or have their own drive.

From the union of these characteristics we see decisive ones Advantages. Because not only the drawing press, but also all subsequent presses work continuously the wear and tear on the clutches and brakes of these subsequent presses very considerably reduced, in addition, the operation of the press line is even and less prone to failure.

., To achieve the same number of strokes for all presses it is necessary for all presses to have an arbitrarily selectable point at which the feed movement has already ended is run through at the same time. The different Speeds during the working stroke, which are caused by the differences in the speed drop at different caused by a large amount of forming work have no influence on this. With the help of known synchronization methods it is possible to control the ram return stroke movement so that all presses do the above at the same time run through the point mentioned, i.e. the feed movement have finished «

The continuous operation of all machines is made possible by that each fascine has its own independent gripper

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having sole transport system. As the gripper rails do not protrude into the neighboring machine, is a mutual disturbance of the movements of the gripper rails and ram of different presses not possible. Because the gripper rails are mechanically coupled to the press drive can also obstruct the movements of the press ram and gripper rails can be excluded with certainty in the individual presses. By eliminating the otherwise necessary Control functions, the number of strokes can be increased significantly «

Because the ram return stroke movements in the individual presses take place at different speeds and during this movement the workpiece transport is already being started, the individual gripper rails are working slightly shifted against each other in time »In order to compensate for these small time shifts, between the presses independent transport devices, e.g. belt conveyors, arranged with the same Cycle time like the gripper rails, but work with a higher feed rate. Since these Zwischenentransporteinriehtungen can have feed steps of any size, the press spacing can be selected as desired. The drive of the intermediate transport devices can can be removed from the press drive or any transport device gets its own drive.

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In order to reduce the space requirement of the press line, It is also possible, in a press line designed according to the invention, to use step presses as follow-up presses to use »This allows several consecutive Operations are carried out in a press. on in this way you can get the transport route for the workpieces save on. The transfer presses used as subsequent presses can have one or more working rams exhibit"

Further details of the invention emerge from the exemplary embodiments described below demonstrate

Pig. 1 a press line designed according to the invention with simple crank presses as pole presses,

Pig. 2 a press line designed according to the invention • with progressive presses with two working rams as pole presses and

Pig, 5 a press line designed according to the invention with transfer presses with a working ram -as Pole press »

the
Pig. " 1 shows / multiple-action drawing press 1 used as the head press of the road. With the aid of an electronic synchronous device, for example the so-called "electric shaft" 2, the drawing press 1 and the crank presses are 009809/06 00

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press j5 so connected that all Presses run with the same number of strokes ». This is achieved by the fact that, controlled by the synchronous device, all presses pass their top dead center at exactly the same time. The workpiece for which the board via a transport device, not shown is transported into the drawing press, is with the help of the gripper rails 4 to the turning station 5 transported. In the turning station, the workpiece is turned over so that it can be transported to a The situation is easy to handle · The workpiece is removed from the turning station with the aid of the gripper rails 6 of the first pole press is transported to this subsequent press. After completion of the operation, the workpiece is with the help of the gripper rails 6 on the Plate conveyor system 7 filed. This plate conveyor moves the workpiece by any adjustable Move on until it can be removed from the gripper rails 8 of the second pole press » Until the workpiece is removed duroh the gripper rails 8 or until a new one from the gripper rails 6 Workpiece is placed, the blank conveyor 'stands still. The workpieces are transported accordingly through the other pole presses in front of you »

The press line shown in Pig »2 also begins with the drawing press 1 and the turning station 5» Als

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Subsequent presses are, however, step presses 9 with applied several working rams. The gripper rails 10 of the transfer presses remove the part from the preceding turning station 5 or the plate conveyor 11 and transport it into the tool under the first ram of the subsequent presses / from there into the tool under the second ram and from there back to the naohgesohalteten plate conveyor or from the Press line out. This arrangement does not apply the additional transport equipment between the stations of the individual transfer presses, i.e. the press line becomes shorter.

This advantage is even more pronounced in the press line after Pig. 3 emerges. The workpieces are also drawn here in the drawing press 1 and turned in the turning station 5 * They are removed from the turning station from the gripper rails initially through the. Step press 12 with its three stations on the plate conveyor IJ and then through the transfer press 14 with its three work stages. However, the transfer presses have a main ram that carries all the stages.

Claims

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Claims (1)

- 8 claims 1 «) Press line, composed of a drawing press and any number of pole presses, with one Transport system for transporting the workpieces between the processing stations, characterized by the Combination of the following features: a) All presses work continuously with the same number of strokes » b) Each press has a known, independent * gripper rail transport device with lifting, Closing and feed movement that is mechanically coupled with the press drive. c) Independent, known per se transport devices are arranged between the presses with same cycle rate as the gripper rail transport devices, but with independent feed steps and feed speeds and those of the press drive or of your own Drive are driven. 2 «) press line according to claim 1, characterized in that one or more of the presses as on known transfer presses are designed with one or more working rams. 3.) 009809/060 0 BAD ORIG'NAL 5) Press line according to claim 1 or 2, characterized in that plate conveyor systems known per se are arranged between the presses for transporting the workpieces. M 2036 / G. 0 0 9 8 0 9/0600 _8Ak0 1
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