DD291946A5 - ADJUSTING DEVICE FOR FAR ADJUSTMENT OF THE GRIPPING RAILS OF A TRANSFER PRESS - Google Patents

Abstract

The invention relates to an adjustment for width adjustment of serving for the transport of sheet metal parts or similar workpieces gripper rails of a press, in particular transfer press. The adjusting device has transversely to the transport direction of the gripper rails by means of lever mechanism movable carriage on which the support elements for the gripper rails are arranged adjustable in their width by means of spindle adjustment mechanisms. Erfindungsgemaesz the axially displaceably mounted on the adjusting spindles drive wheels are designed as a toothed belt pulleys or chain wheels and two annaehernd arranged at right angles to each other, connected in a common pivot point toothed belt or chain drives connected to the frame-fixed adjustment. Fig. 3 {transfer press; Metalworking; Sheet metal part; Gripper rail; Lever mechanism; Width adjustment; Adjusting spindle; Carriage; Supporting element}

Description

embodiment

The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawings show

Fig. 1: Gear box for closing and lifting movement

Fig. 2: detail of a support element with adjustment

3: side view of FIG. 2.

In the right or left goal area of the side stand of the press are the gear boxes 17 (Fig. 1). In them, the drive elements for generating the closing and lifting movement for the guide carriage 18 and the support elements 15 are mounted. The support rail 16, on which the gripper rails are fastened with associated gripper elements for workpiece transport, is mounted displaceably on the support element 15 in the transport direction. On the guide carriage 18 of the drive for closing movement in the form of a lever mechanism 19 is articulated. Furthermore, each guide carriage 18 includes a column-guided Hubtraverse 20, in the lower region of a rail 21 is arranged. The two, the opposite guide carriage 18 associated rails 21 are operatively connected via rollers 22 and lever mechanism 23 with the common hebehubausführenden drive unit.

The in the support member 15 (Fig. 2) mounted transversely to the transport direction spindle adjustment mechanism consists of the rotatably arranged spindle nut 1 and operatively connected to it adjusting spindle 2, provided with an internal profiling end piece 3 on an externally profiled pin 4 of the drive shaft 5 rotatably and axially displaceable is stored. The first drive shaft 5 mounted in the first articulation point of the tab 6 is connected by means of a first toothed belt or chain drive? 7 with the common second hinge point of the tabs 6 and 10 rotatably mounted second drive shaft 8 Wirkve. prevented. The drive shaft 8 includes a further toothed belt pulley or a Keltenrad 9, the second toothed belt or chain drive 11 is connected to the frame-fixed third drive roller 12 of an adjusting motor 13. The drive shaft 12 is simultaneously rotatably mounted in the first gels, ikpunkt the tab 10. The tab 6 is additionally guided vertically guided by means of guide 14. During operation of the transfer device, the closing-opening movement is synchronously transmitted via the support member 15 to the support rail 16 by the positive connection of the mounted in the Hubtraverse 20 spindle-spindle nut combination. The adjusting spindle 2 with the internally profiled end piece 3 remains axially displaceable, but rotatably with the adjustment engaged. The introduced by the lifting movement of the support member 15 vertical relative movement of the adjusting spindle 2 to the frame-fixed adjusting motor 13 is connected by means of scissor-like in a common hinge point connected tabs 6; 10 balanced. For the purpose of adjusting the distance of the support rails 16 is actuated by the adjustment motor 13 via the two toothed belt or chain drive 7; 11 and the drive shaft 5 connected adjusting spindle 2 reaches a horizontal relative movement of the spindle nut 1 relative to the guide carriage 18. This is a, in an advantageous embodiment by means of programmable logic preselectable continuously variable position of the support rails 16 in conjunction with a position measuring system for the purpose of adaptation to the respective workpiece dimensions adjustable.

Claims (2)

Adjusting device for width adjustment of the gripper rails of a transfer press, with pretty and lowered and transversely to the transport direction by means of lever gears movable carriage, on which support elements are arranged in the upper region of the support rails are mounted with the attached gripper rails slidably in the transport direction and their location on the carriage adjustable by means of spindle adjustment mechanisms, wherein the adjusting spindles rotatably mounted in the carriage and are provided at their protruding ends with a longitudinal profiling on which a drive wheel is rotatably mounted and axially displaceable, which in turn is operatively connected to a frame fixedly arranged adjusting motor, characterized characterized that the axially displaceable on the adjusting spindles (2) mounted drive wheels are designed as a toothed belt pulleys or sprockets (9) and each arranged by two approximately at right angles to each other, in a common Ge Steering point interconnected Zahnriemen- or chain drives (7,11) are connected to the frame-fixed adjusting motor (13). For this 2 pages drawings Field of application of the invention The invention relates to an adjusting device for width adjustment of serving for the transport of sheet metal parts or similar workpieces gripper rails of a press, in particular transfer press, according to the preamble of claim. Characteristic of the known state of the art There are adjusting and Arretiervori directions for width adjustment of the support or gripper rails of v. G. Type with miitels lever mechanisms movable carriage for the realization of Öffnunjs- and closing stroke known (DD-WP 273353; DE-OS 3634716), in which the support elements of the support rails by means of a coupling spindle adjustment adjustable in their distance from one another and by means disposed in the support member clamping device positively and non-positively lockable on a Hubtraverse, which in turn is raised and lowered stored in the carriage. A disadvantage of these devices is the high material and control effort for the coupling system for coupling the adjustment and the required clamping system. Furthermore, the only stepped width adjustment rails does not provide optimal adaptation to the technological process. In another known solution (EP 0188648), the support elements for receiving the gripper rails are mounted horizontally displaceable in fixed guides and adjustable by means of spindle adjustment mechanisms in their distance from each other, the adjusting spindles hinged with their outstanding ends directly to the pull tabs of the Hebclgetriebes and via a Interposed gear stage are positively connected to a frame fixedly arranged adjustment. This solution requires in addition to increased mass and manufacturing costs for the realization of the closing stroke export lever mechanism increased mass and space requirements for the gear members of the adjustment. Object of the invention The object of the invention is, in an adjusting device for width adjustment of the gripper rails realized by means of a lever mechanism opening and closing movement to reduce the use of materials and the production cost. Explanation of the essence of the invention The invention has for its object to make an adjustment of the aforementioned type so that over the two first-mentioned known solutions eliminates the complex coupling and clamping systems for the adjustment and compared to the latter solution d ¹ · - '. jine appropriate combination of the Schließhub exporting lever mechanism with the transmission of Verstelleinrichtut.g the number of required gear members and the space required can be reduced. According to the invention this is achieved in that the axially displaceably mounted on the adjusting spindles drive wheels are designed as a toothed belt pulleys or sprockets and are each connected by two approximately at right angles to each other, connected in a common pivot point toothed belt or chain drives with the frame-fixed adjusting motor.