FR2658101A1 - ACTUATING DEVICE FOR SPACING ADJUSTMENT OF PRESSURE TRANSFER PRESSURE RAILS. - Google Patents

Abstract

The invention relates to an actuator for adjusting the spacing of the pick-up rails of a transfer press. The output shaft of each spindle shunting mechanism is connected to the shunting motor by means of two toothed belt or chain transmissions (16, 20), arranged approximately perpendicular to each other and connected to each other in a common point of articulation; and at least one respective crossmember (15, 17) is provided between the output shaft and the articulation point as well as between the articulation point and the operating motor (22) or else a central shaft of training.

Description

The present invention relates to an actuating device for a

  setting of spacing of gripping rails, for conveying sheet metal parts or the like, in a press, especially a press-transfer, having guide carts which can be raised and lowered and also moved perpendicular to the conveying direction by means of of lever transmissions and on which support elements are arranged in an upper zone of which these support rails are mounted so as to be displaceable in the conveying direction with the engagement rails fixed on them and whose position on the guide carriages is adjustable by means of pin actuating mechanisms, whose operating pins or pin nuts are in cooperative connection with a drive motor fixedly held in the frame, by

  the intermediary of mechanical transmission members.

  Actuating and stopping devices are known for adjusting the spacing of the support or catch rails involved in prior art systems, including trolleys movable by means of lever transmissions for generation. the opening stroke and the closing stroke (patent RDA 273 353, FR 36 36 716), wherein the support members of the support rails are adjustable in spacing relative to one another by means of a pin coupling mechanism which can be coupled and can be stopped on a lifting beam

  by means of a clamping device installed in the

  support, operating by conjugation of shapes and forces, said crossbar itself being installed

  so that you can go up and down in the carts.

  A disadvantage of this device is the large expense in materials and control for the coupling system used to connect the device

  from actuation to the necessary clamping system.

  In addition, the spacing adjustment, only staggered, of the support rails does not allow optimal adaptation

to the technological process.

  In another known solution (European patent application 0 188 648), the support elements are mounted, for the reception of the gripping rails, so as to be able to move horizontally in translation in guides integral with the frame and they are adjustable in

  spacing one from the other by means of mechanical

  spindle maneuvers, the spindles

  being articulated by their output ends

  directly on the traction rods of the trans-

  leveraged mission and also being linked by

  its form, by means of gear trains, articulation shafts and intermediate return transmissions, to an actuating device installed in position

fixed in the frame.

  This solution requires, apart from an increased expenditure in materials and manufacturing for the realization of the lever transmission performing the closing race, an increase in material costs and the need for space for the organs

  transmission of the actuating device.

  The object of the invention consists, for an actuating device for adjusting the spacing of the gripping rails by means of an opening and closing movement carried out by means of a transmission

  levers, to reduce material costs and

its manufacturing.

  The object of the invention is to arrange an actuating device of the type defined above so that, compared to the two known solutions mentioned above, the complicated coupling and clamping systems for the actuating devices deleted and, compared to the solution cited in

  the last, to reduce the number of

  the necessary space and the need for space by means of an advantageous combination of the lever transmission performing the closing stroke with the

  transmission of the actuating device.

  According to the invention, the problem is solved in that the output shaft of each spindle drive mechanism is connected to the drive motor by means of two toothed belt transmissions.

  or chains, arranged approximately perpendicular

  interconnected with each other at a common point of articulation, and in that at least one respective cross member is provided between the output shaft and the point of articulation and between the hinge point and the maneuvering motor or a

central drive shaft.

  According to other advantageous features of the invention: The spindle of the spindle operating mechanism is rotatably mounted in a guide carriage and is provided at its outlet end with a longitudinal profiling on which is mounted, with the possibility of axial translation, a chain sprocket or toothed belt pulley, which is connected to the drive motor by means of the two toothed belt transmissions

or chains.

  The operating spindle of the spindle drive mechanism is non-rotatably disposed in a guide carriage and the spindle nut is in cooperative engagement with a return transmission whose output shaft is connected to the drive motor at the spindle. means of the two toothed belt transmissions

or chains.

  The casing of each return transmission comprises at least one journal on which is mounted a connecting rod of the lever transmission performing the closing stroke while the output shaft of the return transmission is mounted coaxially in the journal and is connected, by means of the two toothed belt or chain drives, to the drive shaft of the drive motor which is mounted coaxially to the central point of return of the lever gear, the two toothed belt or chain drives

  being coupled with each other at the point of articulation

  the lever transmission and the lever and

  connecting rods of the lever transmission constituting

  the cross members of the belt drives

notched or chain.

  Other features and advantages of the invention will be highlighted in the following

  the description given by way of non-limiting example,

  with reference to the accompanying drawings in which

  FIG. 1 shows a transmission casing comprising

  both the lever transmissions for the closing and lifting movement of the gripping rails and an actuating device comprising

  chain transmissions that are arranged parallel-

  to the room transportation direction; Figure 2 is a partial view corresponding to a support member of Figure 1; Figure 3 shows a support member of Figure 2 in side elevational view;

  FIG. 4 shows an embodiment comprising a device

  combined actuator, for the closing movement

  ture, with lever transmission; Figure 5 is a sectional view taken along the line A-A of Figure 4;

  FIG. 6 shows an embodiment of the device for

  with separate chain transmissions

  which are arranged perpendicular to the direction

  room transportation; FIG. 7 shows in plan view a diagram of

  transmission occurring in the control device

  Fig. 6. The transmission housings 1 (Fig. 1) are located in the area of the side posts of the press and contain the driving elements for producing the closing and lifting movement for the guide carriages 2 and the support elements 3 On the support elements 3 are mounted, with possibility of translation in the transport direction, the support rails 4, on which the gripping rails are fixed with the associated gripping elements on the guide carriages 2 is articulated the drive system used to produce the movement

  closure and being in the form of a trans-

  levered mission 5 Each guide carriage 2 comprises a crossbar 6 guided by columns and in the zone

  lower of which is disposed a rail 7.

  The two rails 7, associated with the guide carriages 2 situated opposite one another, are in cooperative connection, by means of rollers

  8 and levered transmissions 9, with a unit of

  common train carrying out the lifting stroke.

  The spindle drive mechanism, which is disposed in the support member 3 (Fig. 2) perpendicular to the transport direction, consists of the spindle nut 10, non-rotatably disposed in the support member 3 , and the operating pin 11, in cooperation with this nut and whose end portion 12, provided with an internal profiling, is mounted without the possibility of relative rotation but with the possibility of axial translation, on a pin 13 to prof ilage outside of

  the output shaft 14 for compensation of the movement

  In the same manner, the operating spindle 11 could also be provided, at its outlet end, with a longitudinal profiling on which could be mounted, with the possibility of axial translation, a toothed belt pulley or a pinion. The output shaft 14, mounted at the first point of articulation of the connecting rod 15 (FIG. 3), is in cooperative connection, by means of a first toothed belt or chain transmission 16, with the shaft. 18 rotatably mounted at a common articulation point of the connecting rods 15 and 17 The shaft 18 comprises another toothed belt pulley or another chain pinion 19, which is connected by a second toothed belt or chain 20 to the shaft The rod 17 is also rotatably mounted on the drive shaft 21 The rod is mounted additionally in a slide

  guide 23 installed in a fixed position in the frame.

  During the operation of the transfer device, the closure closing movement is transmitted by the connection with a combination of shapes involved in the spindle-spindle nut combination mounted in the crosspiece 6, synchronously with the support rail 4

  through the support member 3.

  In this respect, the operating spindle 11 preserves

  the possibility of axial translation through

  of the end portion 12 with internal profiling but it is however in engagement, without possibility

  of relative rotation, with the actuating device.

  The relative vertical movement imposed by the lifting movement of the support member 3 with respect to the operating motor 22 is compensated by means of the two toothed belt or chain transmissions 16, 20

  which are connected in the form of scissors at a point of articulation.

  In order to adjust the spacing of the support rails 4, a relative horizontal movement of the corresponding support element 3 with respect to the guide carriage 2 is effected by rotation of the operating spindle 11. a programmable memory control and a distance measuring system, it is possible to make a gradual adjustment

  and preselectable support rails 4 correspondingly

  dance with the dimensions of the room to be packaged.

  In another embodiment (Figure 4), the spindle drive mechanism, which is mounted in

  the guide carriage 2 perpendicular to the direction

  transport, consists of the operating spindle 11 installed without the possibility of relative rotation

  and a forwarding transmission 24, in cooperation with

  ration with it and whose first bevel gear

  is arranged in the form of a spindle nut 25

  Referral Mission 24 (Figure 5) contains two tour-

  lons 26 arranged laterally and on which are

  mounted in a rotating manner the rods 27 of the trans-

  lever mission performing the closing movement.

  The other ends of the rods 27 are articulated on the outer ends of the lever 28 mounted in the middle. The output shaft 29, connected to the second conical pinion 30, of the return transmission 24 is mounted coaxially in one of the journals 26 and carries, at its output end, a pulley 31 for toothed belt The pulley 31 for toothed belt is connected, via a toothed belt 32, to another pulley 33 whose shaft 34 is mounted at the joint point of articulation. the rod 27 and the lever 28. The shaft 34 comprises another pulley 35 for toothed belt, which is connected with the aid of a second

  toothed belt 36 to the shaft 34 of the drive motor.

22.

  During the operation of the transfer device, the opening closing movement is transmitted, by means of the lever transmission 5 and by means of the lever 28 and the connecting rods 27, to the guide carriage 2 for the adjustment of the distance. 'spacing

  support rails 4, the movement of the drive motor,

  22 is transmitted through the toothed belts or chains 32, 36 and the return transmission 24 to the spindle nuts 25 of the spindle operating mechanisms and there is then a horizontal relative movement of the guide carriage. 2 with respect to the articulation points of the transmission

with levers 5.

  For a realization of a three-dimensional movement

  4 of the support rails 4, a driving unit carrying out the lifting movement is integrated in the transmission housing 1. For this purpose, each support element 3 is in cooperation with a guide column 39 mounted in the transport carriage. 2 and in a lower zone of which is disposed a roller 40 The two rollers 40, associated with mutually opposed support elements 3, are advantageously arranged so as to be guided longitudinally in a common rail 41, on which is articulated a unit

  drive performing the lifting movement -

  and is advantageously in the form of a

lever transmission 38.

  In another variant <FIGS. 6 and 7),

  the operating motor 22 is connected, via the intermediary

  re of a return transmission 42, to a central shaft

  43, which is itself in co-operation

  by means of toothed belt or chain transmissions 44, 45 coupled to each other, with the output shafts 46 of the return gearings 47 of the pin actuating mechanisms arranged on the guide carriages 2 and actuating

support elements 3.

  The coupling of the toothed belt or chain transmissions 44, 45 is ensured by means of shafts 48, which are respectively mounted in two connecting rods 49, 50, the other ends of which are mounted on

  pivoting respectively on the central drive shaft.

  43 or on the output shaft 46 of the return transmission 47 In this respect, the maneuvering of the

  support is performed independently of the

  both of the carriage, made by the lever transmission, by means of a horizontal translation of the elements

  support 3 on the guide carriage 2.

Claims (5)

  An actuating device for a setting adjustment of the gripping rail spacing, for transporting sheet metal parts or the like, in a press, in particular a transfer press, having guide slides which can move up and down and also be moved perpendicularly to the conveying direction by means of a lever transmission and on which carrier elements are arranged in an upper region of which support rails are mounted so as to be displaceable in the conveying direction with the gripping rails fixed thereon and whose position on the guiding carriages is adjustable by means of spindle operating mechanisms, whose operating spindles or spindle nuts are in cooperative connection with an operating motor fixedly held in the frame, by intermediate of mechanical transmission members, characterized in that the output shaft (14,29,46) of each transmission mechanism spindle drive is connected to the drive motor (22) by means of two toothed belt or chain drives (16,20 / 32,36 / 44,45) disposed approximately perpendicular to each other and connected to each other other at a common point of articulation, and in that at least one respective cross member is provided between the output shaft (14,29,46) and the point of articulation and between the point of articulation and the drive motor (22) or a central shaft drive (43).   2 Actuating device according to the claim   1, characterized in that the operating spindle (11) of the spindle drive mechanism is rotatably mounted in a guide carriage (2) and is provided at its outlet end with longitudinal profiling on which is mounted, with the possibility of translation 1 i axial, a chain sprocket or a toothed belt pulley, which is connected to the actuating motor (22) by means of two toothed belt transmissions or chains (16, 20).   Actuating device according to claim 1, characterized in that the operating spindle (11) of the spindle operating mechanism is non-rotatably arranged in a guide carriage (2) and the spindle nut ( 25) is in cooperative connection with a return transmission (24) whose output shaft <29, 46) is connected to the drive motor (22) by means of the two toothed belt transmissions or chains (32, 36/44, 45).   4 Actuating device according to the claims   1 and 3, characterized in that the housing of each transmission gear (24) comprises at least one pin (26) on which is mounted a connecting rod (27) of the lever transmission (5) performing the closing stroke while the output shaft (29) of the return transmission (24) is coaxially mounted in the journal (26) and is connected by means of the two toothed belt or chain transmissions (32,   36), to the drive shaft (37) of the drive motor   vre (22) which is mounted coaxially with the central point of return of the lever transmission (5), the two toothed belt or chain transmissions (32,   36) being coupled with each other at the point of   transmission of the lever transmission and the lever (28) and the connecting rods (27) of the lever transmission   (5) simultaneously constituting the sleepers of the trans-   missions with timing belts or chains (32, 36).