FR2640895A1 - - Google Patents

Abstract

The invention relates to a stepped press, in which there are provided two supporting bars performing a horizontal movement and a vertical movement, passing through the volume of the press which contains the tools and on which are fixed crossmembers provided with suction cups at a stepped distance from the tools. . The sleepers 33-38 carrying the suction cups can be engaged on the sliding tables in the intermediate spaces between tools, they can be disconnected from the carrying bars 31, 32 and the carrying bars 31, 32 can be moved upwards by means of a training device.

Description

2640895-

  The present invention relates to a conveyor device for transporting large area parts, as well as double parts, in a stage press, in which there are provided two loadbars carrying out a horizontal movement and a vertical movement, passing through the tool area of the press and on which are fixed sleepers provided with suction cups, at a stepped distance from the tools. Conveyor devices used for transport

  ee Nieces of large area and double rooms,

  sent by two loadbars, oriented in the direction of transport and performing a horizontal stroke (in the direction of transport and in the opposite direction) as well as a vertical stroke and on which are fixed to

  using suction cups of the crosspieces kept transverse-

  with respect to the direction of transport and using which the parts to be packaged with the press are

  transported from one workstation to the next.

  When switching to another part to be conditioned with the press, these crosspieces, with the suction cups which are partially associated with them, must be replaced with

the set of tools.

  In an embodiment proposed in the German patent application? 33 40 454.0, the two support bars, oriented in the direction of transport, are divided into sections located in an area of the sliding table and in an area of the press uprights and are

  separated, for a change of tools, by closers

  automatic tures. The end parts of the supporting bars

  ses, located in an area of the sliding table and on which are fixed the cross members with suction cups, are lowered onto the sliding table and, when changing tools, they are taken out with the tools out of the press.

  Due to the existence of these automatic closings

  ticks used for the separation and the connection of the load-bearing bars, these have a high weight, which results in large inertial forces during accelerations and

slowdowns.

  In addition, the terminal parts of the bars

  carriers which are located in an area of the sliding table

  must also be arranged for the sliding table

  replacement health, which translates into high costs

  vés. The object of the present invention is to create a simplification according to which the separation of the bars

  carriers is removed, which provides an economical

crumb of weight and codt.

  When changing tools, the suction beams are uncoupled from the support bars and they are brought on the sliding tables into the

  intermediate spaces separating the tools.

  The supporting bars are raised enough so that the sliding tables carrying the tools can be removed from the press below said bars. The

  displacement in height used for lifting the pre-

  neuses is used simultaneously to modify the transport plan, in the case of a set of tools respectively of small

  and great height, and it is used to adjust the stems of ventou-

  its compared to the press part.

  Other features and advantages of the invention

  tion will be highlighted in the following description,

  given by way of nonlimiting example, with reference to the appended drawings in which: FIG. 1 is a front elevation view of a stage press, the transfer of the suction cups taking place in the position for removing the parts out of the tool, FIG. 2 is the same front elevation view in a tool change position, FIG. 3 is a sectional view taken along the line AB of FIG. 1, FIG. 4 is a view in section taken along the line CD in FIG. 2, FIG. 5 is a sectional view made along the line EF in FIG. 1, FIG. 6 is a sectional view made along the line GH in FIG. 2,

  Figure 7 is a sectional view taken along the line J- ^.

  of Figure 3 and Figure 8 is a sectional view taken along line L; M

of figure 1.

  In the example considered, the first four working utilities 1, 2, 3, 3a, empty stages 4 and 5 of a stage press for brutal parts, consisting of press tables 6 and 7, upper beams 3 and 9, press uprights 11-15, sliding tables 16, 17, 13, 19, press punches 20, 21, 22, lower tools 23, 24, 25, 25 and upper tools 27, 28,

  29 and 30 are shown in the corresponding figures.

  The press is crossed by two carrying bars

  31 and 32 on which are fixed the crosspieces to ventou-

  its 33-38 so as to be able to be coupled with the suction rods 39 and 39a, uncoupled from the latter and

be able to rotate.

  The support bars 31 and 32 are guided, from

  so as to be able to unravel in translation in the direction

  tion of transport and in the opposite direction, by guide tabs 40 and 40a in the guides 41 and 41b, which are fixed on columns 43-43b mounted with possibility

  displacement in height in guide columns 42-

  42b. The drive for the horizontal movement 44 of the carrying bars 31 and 32 is provided by means of a cam transmission, not shown, by means of the levers 45 and 45a, which are connected by the connecting rods 46 and 46a

with loadbars 31 and 32.

  The drive for the vertical movement 48 (production axis) of the support bars 31 and 32 is also ensured, by means of a cam transmission, not shown, and connecting rods, on the guide columns 43-43b, which allow the displacement in height of the support bars 31 and 32 by means of an operating motor,

  not shown, and a noi :: as well as a brooch, also

  ment on the guide columns 43-43b.

  For a tool change, the carrying bars 31 and 32 are driven over half of their transport distance 44 (Figure 2 so that the suction rods engage in the intermediate spaces existing between the tools 23-26 and are entaoes on the holding pins 1O-52a, fixed on the sliding tables 16-19 and which are mounted in such a way as to move, to move in height and to rotate in bending tubes 53-57a.

  retaining pins 48-52a of 90, the vent rods

  his 33-37 engaged in position are prevented from moving

  in axial translation by pins 58. When lestraver-

  its suction cups 33-38 have been mounted on the plug pins

  located on the sliding tables, the support bars

  its 31, 32 are exited, by biasing by a pressurized fluid, bearings 62 which are arranged in the flanges of bearings 61 welded to the ends of the sleepers

with suction cups.

  The blade 63 is pivotally mounted, by means

  of the bearing 64, on the bearing bush 59.

  In view of a change of position during the trans-

  port of the parts to be conditioned to the press of a stage

  tools to the next, it is necessary that the sales rod

  all can perform a pivoting movement. To this end, the blade 63 is held at its upper end in a grooved block 65 which is itself mounted on a

  support pin 67 guided in a housing 66.

  D By means of a programmable drive motor 68-68c, which cooperates with a rod 69 and a nut 70 fixed in the head of the bearing spindle 67, this spindle

  bearing performs a horizontal movement so as to produce

  re a pivoting movement of the suction-cup sleepers.

  Because of the torsional sensitivity of the crossings

  its suction cups, the 68-63i drive motors are mounted on the two carrying bars 31 and 32. The drive motors placed opposite one another on a

  crossbars with suction cups are electrically synchronized.

  For the attachment of the suction rods to the blades 63, guide sleeves 71 and 72 are provided on the bearing flanges 6l in which are fastened fixing pins 73 and 7.1 provided on the blades 63. Next to the sleeves guide 71, there is provided on the blade 63 a connector 75 for electrical plug and next to the sheathing sleeve 72 a pneumatic connector 75 while it is

  provided on the bearing flanges 6 {crosspieces with ventou-

  ses 35, next to the fixing pin 73, an electrical plug

  triq.ue 77 and, next to the fixing pin 74, a tube

  pneumatic connection lure 73.

  For the raising and lowering of the carrying bars 21, 32 with a view to the coupling and uncoupling of the suction struts, engaged on the pins of the sliding tables, with respect to the carrying bars 31: and 32, the fixing pins 73 and 74 are used simultaneously

  centering of the electrical plug 77 with respect to its reception

  tackle 75 and at the center of the pneumatic connection 76 with its

  receiving manifold 78. The plates 32 and 82a are

  born by the conveyor belt 79 as far as the lifting station 30 and, from there, they are transported, by means of the platen conveyor 31, to the floor of

implementation 1.

  From there, the parts 83, 83a packaged by the press are transplated from the vacuum cross member fi: 'ée on the loadbars 31 and 32 to an empty station 4 comprising the depositing templates 35 fixed on these corresponding supports 84 then they continue their

  transport through the multi-stage press.

2640895.

Claims (5)

  1.- Multi-stage press, in which two carrying bars are provided carrying out a horizontal movement and a vertical movement, crossing the press volume yes contains the tools and on which are fixed cross-members provided with suction cups at a staggered distance from the tools, characterized in this cue the crosspieces <33-38) coming out the suction cups can be engaged on the sliding gates <16-19) in the intermediate spaces between tools, they can be uncoupled from the support bars <31.32), and in that! load bars (31,32) can be moved to   the top by means of a training device.   2. A stage press according to claim 1.   characterized in that a coupling pin (60,) is provided for coupling and disengaging a crosspiece. which is engaged in a bearing (62)   of a bearing flange <61) of the crosspiece.   3.- stage press according to claim 2, characterized in that the bearing flange <61) comprises guide sleeves (71,? 72) in which   are fastened fixing pins (73,74).   4.- stage press according to claim 3, characterized in that there are plug-in couplings (75,76) parallel to the fixing pins (73.74).   5.- stage press according to claim 4, characterized in that the fixing pins (73,74) are fixed on a blade (83) which can pivot around   the axis of the plug-in pin (60).   enb7izzoale -a (ipL 'an-.D'ilnad uczTe; - az, -eu.u sl.uamal sep Er ar. sesnezua Ud sEte seza-uetD: tem -e qe ae0our m- enb sduiez 3 un3 = bU, ar 1 az ua: x zr   * a uos e-.uas3 e uoQa saez aQ ssaid.   -ine: l.munle + .nGG zs g ame2lanbgTID ap auemeP.D.a = d 3p lUtiAZnOM 3, ans ac ue etIe * De.Ez tIotFD; ptieAa.x, 'E3SsaQE1 - * i6 8O0 & 9Z