DE3617981A1 - Device for holding and/or positioning workpieces and/or tools or the like - Google Patents

Abstract

Device for holding and/or positioning workpieces (50) and/or tools or the like, having a supporting frame (16) on which a holder (13) for the workpiece (50) or the like is arranged. To be able to use such a device in many situations, the workpiece or suchlike holder (13) is mounted on the supporting frame (16) to be rotatable about a (vertical) axis (29) and its position can be changed and fixed, as desired, within design limits in a plane extending approximately parallel to the axis of rotation (29). <IMAGE>

Description

The invention relates to a device for holding and / or positioning workpieces and / or tools gene or the like, with a support frame on which a Holder for the workpiece or the like arranged is.

Such devices are used to facilitate the Assembly, production or used for transport purposes, the goal is always the construction and handling exercise as simple as possible. Most before Directions of this type are individually based on given Manufacturing machines, assembly equipment or conveyor systems adapted and accordingly with regard to their versatility  limited activity.

The aim of the present invention is a Vorrich training of the type mentioned so that they are versatile is usable while maintaining a simple Construction and handling.

This task is done in a surprisingly simple way through the characteristic measures of the patent Proverb 1 solved.

The construction according to the invention allows movement of the workpiece or the like holder within con structural boundaries at any location and the fixation of the same to this. Is accordingly the device according to the invention without adaptation to before given manufacturing or assembly systems can be used.

The construction described in the subclaims details let the simplicity of the construction and Detect handling of the device according to the invention. The device can be made generally available assemble standing components. Complicated tax elements are not required. Ultimately draws the construction according to the invention by a rela tiv simple mechanics, which accordingly disturb is due without losing the required precision goes away.

Depending on the weight of the workpiece to be held or Tool can change the position of the same performed manually or by pneumatic, hydraulic Piston-cylin that can be operated hydraulically or pneumatically of the units are supported, preferably without are present as support and balance elements.  

Below is a preferred embodiment of the inventive device using the Drawings explained in more detail. Show it:

Figure 1 shows the inventive device in schematic side view showing different positions of the workpiece or the like holder ver.

Figure 2 shows the device of Figure 1 in Seitenan view.

Figure 3 shows the device corresponding to Figure 1 with lowered from workpiece holder, likewise in a schematic side view..;

Fig. 4 u. Fig. 5 shows the device of Figures 1-3 in an even more schematic side view showing the manipulation of the workpiece or the like holder.

FIG. 6a, 6b to be connected to the workpiece holder or the like holding fork in side view and plan view;

Fig. 7a, 7b connected to the workpiece holder or the like holding fork showing the mounting of a workpiece on this in side view.

The device for holding and / or positioning workpieces, tools or the like according to FIGS. 1-5 has a workpiece or the like Hal ter 13 which is rotatably mounted on a support frame in the form of a tripod 16 about an upright axis 29 . The axis of rotation 29 is defined by a support column 14 rotatably mounted in the support frame 16 , to which the workpiece or the like holder 13 is articulated, specifically via a parallelogram handlebar arrangement 30 . The pivot bearing of the support column 14 in the support frame 16 is marked in FIGS . 1 and 2 with the reference number 15 net. The support column 14 can be ball or slide mounted. This depends not least on the dimensioning of the overall device and the masses to be moved accordingly. The parallelogram handlebar arrangement 30 is articulated at a corner point (joint 19 ) on the support column 14 . The other, the support frame 16 or the support column 14 facing corner 31 of the parallelogram handlebar assembly 30 is supported by a first preferably pneumatically actuated piston-cylinder unit 10 . This is also ge articulated on the support column 14 , namely about the horizontally extending axis 21st The parallelogram handlebar arrangement 30 is formed by a workpiece or the like holder 13 comprising support arm 1 , a spaced parallel, extending at one end to the support column 14 main link 4 , and two the support arm 1 on the one hand and the Main link 4 on the other hand connecting, spaced from each other and approximately parallel to each other connec tion link 2 , 3rd All of the links 2 , 3 and 4 , including a support arm 1, are each articulated to one another, the articulated axes each extending perpendicularly to the plane defined here by the link, including the support arm - here horizontally. The articulation of the main link 4 on the support column 14 takes place at the joint 19 already mentioned, via which the entire parallelogram link arrangement 30 is connected to the support column 14 .

The parallelogram linkage assembly 30 supporting the first piston-cylinder unit 10 is coupled to the via the hinge 19 articulated to the support column 14 connecting link 3 via a guide lever 6, the control arm to a fixed connected to the connecting link 3 to 17 on the one hand and is articulated on the free end of the piston rod 32 protruding from the first piston-cylinder unit 10 . The articulation lever 7 protrudes from the connecting link 3 at a right angle. The parallelogram handlebar arrangement 30 is supported by the first piston-cylinder unit 10 via a connecting lever 5 . This is on the parallelogram joint 31 on the one hand and at the free end of the piston-cylinder unit 10 projecting piston rod 32 on the other hand connected according to the guide lever 6th The piston-cylinder unit 10 supports the parallelogram handlebar arrangement 30 and thus the workpiece or the like holder 13 or support arm 1 in the vertical direction. The piston-cylinder unit 10 thus serves to absorb or transmit vertical forces. The guide lever 6 is dimensioned shorter than the connecting lever 5 , preferably about half the size of the connecting lever 5 . The articulation of the guide lever 6 and the connecting lever 5 at the free end of the piston rod 32 lies in every position of the workpiece or the like holder 13 on the side of the main link 4 facing the piston-cylinder unit 10 , that is to say always below the same.

The other connecting link 2, which is assigned to the corner (joint 31 ) of the parallelogram link arrangement 30 supported by the first piston-cylinder unit 10 , is connected hydraulically, pneumatically or hydraulically to the support column 14 in an articulated manner (joint 20 ). Pneumatically actuated piston-cylinder unit 9 coupled, namely via a link arm 3 rigidly connected to the connecting link 2 . Like the link lever 7, this protrudes vertically from the connecting link 2 . The link levers 7 and 8 are each facing each other and each extend about just over half of the two pivot points 19 and 31 miteinan the connecting main link 4th The connection of the connecting link 3 associated control lever 7 is located approximately at the level of the articulation 19 of the parallelogram-link assembly 30 to the support column 14, while the An 8 bit is connected above the associated joint 31 at the connection arm 2 steering lever. The piston-cylinder unit is used to absorb or transfer horizontal forces.

The piston-cylinder units 9 and 10 are arranged on the support column 14 one above the other. The hinge axes 20 , 21 extend approximately parallel and also perpendicular to the plane defined by the parallelogram handlebar arrangement 30 . The articulation points of the connecting links 2 and 3 on the support arm 1 are marked in FIGS . 1 and 3 with the reference numbers 33 and 34 . The piston rod assigned to the piston-cylinder unit 9 and projecting from it is provided with the reference number 35 . At the free end of the same, the articulation takes place on the articulated lever 8 rigidly connected to the connecting link 2 . The piston rods 32 , 35 of the piston-cylinder units 10 and 9 are associated with conventional locking units that are pneumatically controllable. Since these are commercially available units, there is no need to describe them in more detail or to describe how they work. These locking units are identified in FIGS . 1-3 with reference numbers 18 and 17 respectively.

The rotatably mounted support column 14 is a fixed actuator 11 of the type mentioned, so that any position of the workpiece or the same holder 13 , as z. B. is indicated in Fig. 1, can be fixed.

The workpiece or the like holder 13 is also rotatably supported in the support arm 1 about its longitudinal axis 36 . It is conceivable that the holder 13 is additionally gela gert in the direction of the longitudinal axis 36 back and forth. In both cases, the holder 13 must be assigned a fixed setting unit 12 , by means of which the position of the holder 13 can be fixed relative to the support arm 1 . A conventional locking unit, preferably a pneumatically operated unit, can also be used.

The mentioned locking units 11 , 12 , 17 and 18 are either individually, jointly or only partially operable together. Above all, the locking unit 12 assigned to the workpiece or the like holder 13 can be actuated independently of the other adjusting units 11 , 17 and 18 by means of a valve 27 arranged on the support arm 1 . Preferably, however, the remaining locking units should also be able to be actuated independently of one another, as will be explained in more detail below with reference to FIGS . 4 and 5.

As already stated above, the piston-cylinder units 9 and 10 serve to absorb horizontal or vertical forces and thus represent a type of support or balance unit. When the locking units 17 , 18 are released, the piston rods 35 and 32 are in and out can be moved here, preferably against the effect of an effective throttle resistance within the cylinder units 9 , 10 . To support the change in position of the workpiece or the like holder 13 , the piston-cylinder units 9 , 10 can also be actively pressurized in one or the other direction. This applies in particular to changes in the position of workpieces or tools of greater weight.

With reference to FIGS. 4 and 5 can be possibilities of the device or the possibility of the change of position 9 and 10 detect the workpiece or the like holder 13 in coaction with the piston-cylinder units, the manipulation. For a better understanding of the mechanics in Fig. 4 and 5 only the handlebars and Anlenkpunk te and the connection of the handlebars with the piston-cylinder units 9 and 10 are shown by simple lines Darge.

The basic position of the device is in both figures characterized by a slightly thicker line net.

The illustration of the device in FIG. 4 in thinner lines shows the device in a lowered position, the piston-cylinder unit 9 being fixed in the basic position, the piston rod 32 of the piston-cylinder unit 10 being retracted against it. The resulting change in the position of the articulations 31 , 43 , 44 and 45 is identified by the reference numerals 31 ', 43 ', 44 'and 45 '. The reference numerals 43 , 43 'on the articulation of the piston-cylinder unit 9 associated piston rod 35 on the articulation lever 8 of the connecting link 2 , the reference numerals 44 , 44 ' on the articulation of the guide lever 6 on the one hand and the connecting lever 5 on the other hand at the free end of the the piston-cylinder unit 10 associated piston rod 32 , and the reference numerals 45 , 45 'on the articulation of the guide lever 6 on the link arm 3 associated with the link lever 7 out.

In Fig. 5 a first intermediate position of the Vorrich device is shown by thinner lines and a further lowered position in dashed lines. In the first-mentioned intermediate position, the piston rod 32 assigned to the piston-cylinder unit 10 is fixed in the basic position, while the piston rod 35 assigned to the piston-cylinder unit 9 is extended. This results in a change in the articulation points 31 , 43 , 44 and 45 in the positions 31 ', 43 ', 44 'and 45 '.

If the piston rod 32 is now additionally released and completely retracted into the piston-cylinder unit 10 , the device or the workpiece or the same holder 13, which is only indicated in FIG. 5, is lowered further. The articulation points mentioned move into positions 31 '', 43 '', 44 '' and 45 ''.

FIGS. 4 and 5 it can be seen that the drawing through a piston-cylinder unit 10 associated piston rod 32 is mainly achieved tilting of the supporting arm 1 downwards. By extending the piston rod 32 there is exactly the opposite effect. By extending the piston-cylinder unit 9 associated piston rod 32 , a reduction in the support arm 1 is also achieved, practically while maintaining its original horizontal position.

The changes in position shown only take place in the upright plane defined by the parallelogram handlebar arrangement 30 . This change in position can be supplemented by rotating the parallelogram handlebar arrangement 30 by the axis 29 mentioned in connection with FIGS . 1-3, so that the workpiece or the like holder 13 can be brought to any place in space is achievable due to the design. This space is a concentric around the axis of rotation 29 extending annular space, the width te in Fig. 5 with the reference letter "B" is marked net. The height of this annular space is defined by the highest and lowest point that can be achieved with the workpiece or the like holder 13 within the mentioned annular space.

As has already been explained above, the fixed actuating units 11 , 12 , 17 , 18 can be actuated pneumatically. The supply of the mentioned locking units with compressed air takes place via a central compressed air connection 26 ( Fig. 3). A pneumatic main valve 24 is assigned to this compressed air connection 26 . From this, compressed air lines 38 , 39 , 40 and 41 lead to the fixed setting units 12 , 18 , 17 and 11 , with the compressed air lines 39 , 40 also supplying the pneumatically operable piston-cylinder units 10 and 9 respectively. Furthermore, a control line 37 leads from the main valve 24 to a foot valve 25 . The work piece or similar holder 13 associated actuator 12 is a separate manually operated Ven valve 2 assigned, as already stated above. With the sem the fixation of the workpiece or the like holder 13 can be made individually within the support arm 1 .

The piston-cylinder units 9 and 10 are each acted upon from one side, the compressed air supply depending on a throttle valve 28 in the piston-cylinder unit 9 on the piston rod side and in the piston-cylinder unit 10 on the piston rod-free side it follows . The opposite cylinder spaces of the piston-cylinder units 9 and 10 are also assigned throttle valves 28 through which a fluid connection is made with the environment. Against the effect of the mentioned throttle valves 28 , the piston rods 32 , 35 are displaceable and thus the workpiece or the like holder 13 can be changed in position. The throttle valves 28 allow with open locking units 17 and / or 18 a manual change of position of the workpiece or the like holder 13 , which can also be released at short notice without it changing its position significantly. The piston-cylinder units 9 , 10 represent in connection with the throttle valves 28 a kind of support or balance weight. The foot valve 25 controls the compressed air supply through the lines 38 , 39 , 40 and 41 . If the foot valve 25 is not actuated, the locking units 11 , 17 and 18 should be effective. When the foot valve 25 is actuated, on the other hand, the locking units 11 , 17 and 18 should be released and thus opened. The piston-cylinder units 9 and 10 are in the working position. The workpiece or the workpiece or the like holder 13 can then be brought into any desired position.

The locking unit 12 is actuated independently of this. If the manual valve 27 is actuated, the locking unit 12 should be released and thus opened. The workpiece or the like holder 13 can be rotated about the longitudinal axis of the support arm 1 . If the manual valve is not actuated, the parking brake 12 is under compressed air. The parking brake 12 is effective and the workpiece or the like holder is fixed in position.

In Figs. 6a, 6b in the side and plan view of a holding fork 42 is shown, which formed on the pin-like workpiece or the like out holder 13 by means of a not shown plug-in pin is connected. This socket pin can be carried out in alignment with one another by means of transverse bores 46 , 47 on the peg-like workpiece or similar holder 13 and complementarily designed connecting part 48 of the holding fork 42 and can be locked in this common transverse bore.

In Figs. 7a, 7b of the mentioned holding or cross bolt is by the reference numeral 49 in. In addition, in Figures 7a, 7b the connection of a work piece - here: turret of a drinking straw applicator 50 - is shown on the holding fork 42 . The workpiece 50 is fastened to the holding fork 42 by a screw connection 51 .

It should be pointed out again at this point that the piston-cylinder unit 9 for horizontal support and the piston-cylinder unit 10 for vertical support of the holding or supporting part of the device serves. Accordingly, FIG. 3, according to the pneumatic cylinder unit piston 9 introduced into the penetrated by the piston rod 35 and cylinder chamber at the piston-cylinder unit 10 in the piston rod-free cylinder space in the. The compressed air introduced into the piston-cylinder unit 9 accordingly acts in the direction of the arrow 52 , while the pressure introduced into the piston-cylinder unit 10 via the compressed air line 39 acts in the direction of the arrow 53 ( FIG. 3).

In principle, it is also conceivable to additionally support the support column 14 on the support frame 16 so that it can be moved up and down in the vertical direction, in order thereby to extend the effective range of the workpiece or the like holder 13 .

Preferably, the pneumatic locking units 17 , 18 are controlled so that compressed air is automatically applied to the corresponding piston-cylinder units 9 , 10 via the pressure medium lines 40 and 39 when released, so that the piston-cylinder units 9 , 10 in the direction of arrows 52 and 53 in FIG. 3 are effective, that is to say hold the parallelogram handlebar arrangement together with the workpiece or the like holder in the released position. The pressurization of the piston-cylinder units 9 and 10 should be such that the workpiece or the like holder can be manually moved from the released position into a new position without special effort and can be held there again together with the workpiece. It is conceivable that the pressure medium loading of the piston-cylinder units 9 , 10 is set independently depending on the weight of the workpiece or tool to be positioned. For this purpose, the piston-cylinder units can be assigned separate pressure sensors, the signals of which reflect a pressure medium source, not shown, in such a way that the pressure medium loading takes place depending on the weight.

• Reference symbol list: 1 support arm
  2 connecting links
  3 connecting links
  4 main links
  5 connecting levers
  6 guide levers
  7 link levers
  8 link levers
  9 first piston-cylinder unit
  10 second piston-cylinder unit
  11 locking unit
  12 locking unit
  13 workpiece or the like holder
  14 support column
  15 Storage of the support column
  16 support frame or supports (tripod)
  17 locking unit
  18 locking unit
  19 joint or linkage of the parallelogram handlebar arrangement 30 on the support column 14
  20 joint
  21 joint
  24 main valve
  25 foot valve
  26 Compressed air connection
  27 manually operated switching valve
  28 throttle valve
  29 axis of rotation
  30 parallelogram handlebar arrangement
  31 corner joint
  32 piston rod
  33 linkage (joint)
  34 linkage (joint)
  35 piston rod
  36 longitudinal axis of the support arm 1
  37 control line
  38 compressed air line
  39 Compressed air line
  40 compressed air line
  41 compressed air line
  42 holding fork
  43, 43 ′, 43 ″ articulation point (joint)
  44, 44 ′, 44 ″ articulation point (joint)
  45, 45 ′, 45 ″ articulation point (joint)
  46 cross hole
  47 cross hole
  48 connecting part
  49 cross bolts
  50 turret of a drinking straw applicator
  51 screw connection
  52 arrow
  53 arrow

Claims (17)

1. Device for holding and / or positioning workpieces ( 50 ) and / or tools or the like, with a support frame ( 16 ) on which a holder ( 13 ) for the work piece ( 50 ) or the like is arranged, characterized in that the workpiece or the like holder ( 13 ) on the support frame ( 16 ) about an (upright) axis ( 29 ) rotatably bar and within an approximately parallel to the axis of rotation ( 29 ) extending plane within design-related limits can be changed and fixed in any position is. 2. Apparatus according to claim 1, characterized in that the workpiece or the like holder ( 13 ) within half of the (upright) plane in both the horizontal and vertical direction is movable and / or tiltable GE. 3. Apparatus according to claim 1 or 2, characterized in that the workpiece or the like holder ( 13 ) with the support frame ( 16 ) via a parallelogram handlebar arrangement ( 30 ) is connected, such that they on one in the support frame ( 16 ) rotatably mounted, the axis of rotation ( 29 ) of the workpiece or the like holder ( 13 ) defining (upright) support column ( 14 ) is articulated (hinge 19 ). 4. The device according to claim 3, characterized in that the articulation (joint 19 ) of the parallelogram handlebar arrangement ( 30 ) at the same corner point, and that at a distance from this the parallelogram handlebar arrangement ( 30 ), in particular in the area of the other, the support frame ( 16 ) or the support column ( 14 ) facing corner point ( 31 ), is supported by a first pneumatically, hydraulically or hydro-pneumatically actuated piston-cylinder unit ( 10 ). 5. Apparatus according to claim 3 or 4, characterized in that the parallelogram handlebar arrangement ( 30 ) is formed by a workpiece or the same holder ( 13 ) comprising the support arm ( 1 ), a distance approximately parallel to it extending main link ( 4 ) articulated in the area of the parallelogram linkage (joint 19 ) on the support column ( 14 ), and two connecting the support arm ( 1 ) on the one hand and the main link ( 4 ) on the other hand, spaced apart and approximately parallel to each other extending connecting link ( 2 , 3 ), the links ( 2 , 3 , 4 ) including the support arm ( 1 ) each being articulated ( 19, 31 , 33, 34 ). 6. Apparatus according to claim 4 or 5, characterized in that the parallelogram handlebar arrangement ( 30 ) supporting first piston-cylinder unit ( 10 ) with the in the region of the parallelogram linkage (joint 19 ) on the support column ( 14 ) articulated connecting link ( 3 ) is coupled via a guide lever ( 6 ). 7. The device according to claim 6, characterized in that the guide lever ( 6 ) on a with the associated connecting link ( 3 ) rigidly connected articulated lever ( 7 ) is articulated. 8. Device according to one of claims 4-7, characterized in that the connection between the first piston-cylinder unit ( 10 ) and supported by this abge parallelogram corner point (hinge 31 ) via a support or connecting lever ( 5th ) he follows. 9. Device according to one of claims 4-8, characterized in that the first piston-cylinder unit ( 10 ) on the support column ( 14 ) is articulated (articulation 21 ), the articulation axis being approximately vertical through the through the Parallelogram handlebar arrangement ( 30 ) defined plane extends. 10. The device according to one or more of claims 3-9, characterized in that the other, from the parallelogram linkage ( 19 ) on the support frame ( 16 ) or on the support column ( 14 ) spaced or by the first piston -Cylinder unit ( 10 ) supported corner of the parallelogram handlebar arrangement ( 30 ) assigned connecting link ( 2 ) with a second, on the support frame or on the support column ( 14 ) articulated (joint 20 ), also hydraulically, pneumatically or a hydro-pneumatically actuable piston-cylinder unit ( 9 ) is coupled, preferably via a linkage lever ( 8 ) rigidly connected to the connecting link ( 2 ). 11. The device according to claim 10, characterized in that the two on the support column ( 14 ) preferably arranged one above the other, piston-cylinder units ( 9 , 10 ) each have a known locking unit ( 17 ) or ( 18 ) is assigned , through which the movement of the pistons or piston rods can be blocked. 12. The device according to one or more of claims 1-11, characterized in that the rotatably mounted support column ( 14 ) is associated with a special locking unit ( 11 ). 13. The device according to one or more of claims 1-12, characterized in that the workpiece or the like holder ( 13 ) in the support arm ( 1 ) rotatable about its longitudinal axis and / or in the direction of the same back and forth and mounted by means of a Locking unit can be fixed relative to the support arm ( 1 ). 14. Device according to one of claims 11-13, characterized in that all locking units ( 17 , 18 , 11 , 12 ) hydraulically or pneumatically actuated bar, in particular against the action of an elastic element's solvable, that is, brought into the release position are. 15. The apparatus according to claim 14, characterized in that the locking units ( 17 , 18 , 11 , 12 ) ent can be operated either individually, that is independently of one another, jointly or only partly jointly, in particular the holder of the workpiece or the like ( 13 ) associated locking unit ( 12 ) can be actuated independently of the other locking unit ( 11 , 17 , 18 ) by means of a switch or valve ( 27 ) arranged on the support arm ( 1 ). 16. Device according to one of claims 4-15, characterized in that the position of the workpiece or the like holder ( 13 ) upon release of the locking units ( 17 , 18 ) for the parallelogram handlebar arrangement ( 30 ) assigned Piston-cylinder units ( 9 , 10 ) against the action of a by these piston-cylinder units-induced throttle resistance can be changed bar. 17. The device according to one or more of claims 4-15, characterized in that the piston-cylinder units ( 9 , 10 ) serving for support to support the change in position of the workpiece or the same holder ( 13 ) more or less strongly (in the case of a piston-cylinder unit which can be acted upon from one side) and / or in one direction or another (in the case of two piston-cylinder units which can be acted upon from one side) can be acted upon by pressure medium.