SE462705B - ARM INTENDED FOR MATERIAL HANDLING OR PROCESSING DEVICE - Google Patents

Description

LU L5 462 705 2 The design of the profile elements as a load profile element with a substantially rectangular, closed cross-section provides good torsional and bending rigidity of the construction.

By placing the load profile elements included in the arm next to or next to each other (and not telescopically inside each other), good space is obtained inside resp. charging profile elements for a drive loop, preferably in the form of an electric motor-driven toothed belt, which in a simple manner causes the exact relative displacement of the adjacent charging profile elements. The closed, separate charging profile elements also provide space for the installation of power and signal cables for the handling or processing devices in question.

The drive loop or drive loops can be arranged in different ways to achieve the desired drive function - compare claims 2 - 5. In this case, each pair of adjacent box profile elements can be driven separately with the associated motor and drive loop, or a drive loop can be "passively" connected between two of a further drawer profile elements separate drawer profile elements, so that a mutual movement between two elements is transmitted to said further drawer profile elements (claim 4).

By using an electric motor in combination with a timing belt as a drive loop (claims 8 and 7), the displacement movement can be controlled very accurately with a repeatability of about 0.2 mm and a travel speed of about 0.5 - 1.5 m / s.

Suitable cross-sectional shapes and designs of the slide guide flanges, which i.a. provides good stability and mutual control, are stated in claims 8 - 12. 10 15 20 25 30 462 7035 Manufacture of the box profile elements by extrusion of aluminum (claim 13) provides low manufacturing costs and great opportunities for adapting the device to specific production conditions.

The basic components, namely the mutually displaceable drawer profile elements with associated drive device, can be arranged and combined in many ways as a modular building system, and some principal variants are stated in claims 14 - 21.

The invention is explained in more detail below with reference to the accompanying drawings, which schematically illustrate a number of exemplary embodiments.

Figs. 1a and 1b show two different cross-sectional shapes for mutually slidably connected drawer profile elements included in a device according to the invention; Figs. 2a, 2b, 3a, 3b, 4a, 4b and Sa, 5b show in side view and in cross section different embodiments of an arm included in the device according to the invention with longitudinally displaceable drawer profile elements and associated drive devices; Figs. Sa, 6b, .7a, 7b and Ba, Bb show in side view (Sa), front view (7a, 8a) and cross section (6b, 7b, 8b) different embodiments of vertically displaceable suspensions for an arm, e.g. according to any one of Figures 2 to 5; Pig. 9 shows in side view a rotatable base on which a column stand with a vertical guide is arranged, e.g. according to any one of Figures 6 to 8; LO 462 705 Figs. 10a, lüb, 11a, 11b and 12a, 12b show in side view and in cross section different attachment units for coupling with one arm and support of different grippers; and Figs. 13 - 18 schematically show different combinations of stands and arms according to the invention.

A material handling or processing device according to the invention comprises in principle a stand and an arm mounted thereon, preferably horizontally oriented, which carries a handling or processing device displaceable in the longitudinal direction of the arm. Compare Figs. 13 - 18, which show some possible combinations.

Such an arm according to the invention consists of at least two drawer profile elements, which are slidably arranged next to, for example over each other and have mutually interlocking sliding guide flanges, the different drawer profile elements being displaceable by means of one or more motor-driven drive loops, as will be described in more detail below with reference to Figs. 2 - 5.

A preferred embodiment of such drawer profile elements is shown in Fig. 1a, and a simplified variant is shown in Fig. 1b.

Fig. 1a thus shows in cross section two interconnected longitudinally displaceable box profile elements 1a and 1b, respectively, which have exactly the same cross-sectional shape and are made of an aluminum alloy by extrusion.

The profile cross-section is designed to obtain high torsional and bending stiffness as well as simple but precise interconnection. Each profile element has for this purpose a closed, substantially rectangular, preferably approximately square cross section with two opposite top and bottom walls 10 and 11, respectively, and two opposite side walls 12 and 13, respectively. 12, 13 are connected at their central portions by means of a web extending parallel to the top and bottom walls or a partition wall 14, which divides the interior of the drawer profile element 1a and 1b, respectively, into two chambers 15 and 16, respectively.

In connection with the corner edges between the top wall 10 and the side walls 12, 13, two top flanges 17, 18 project, which have a side portion 17a and 18a extending substantially in the extension of the respective side wall 12, 13 and a connecting, inwardly bent top portion 17b and 18b, respectively, which at its free end, a tapered oblique inwardly, downwardly towards the top wall 10 has an end portion 17c, 18c directed. This end portion 17c, 18c together with a longitudinal rib 17d and 18d located opposite it on the upper side of the top wall 10 form a hook or stirrup opening 17e and 18e, respectively.

The two openings 17e and 18e are thus opposite and facing each other.

The bottom wall 11 is at the respective end portion 11a, 11b next to and respectively the corner edge adjoining the side wall 12,13 parallel displaced upwards a small distance. From the transition between the straight middle portion 11 and the end portion 11a, 11b of the bottom wall, a bottom flange 19 and 20, respectively, projecting downwards, a portion 19a and 20a extending perpendicularly downwards from the bottom wall 11 and a substantially laterally outwardly laterally connecting bottom portion 19b and 20b, free end forms a solid, substantially cylindrical guide flange 19c and 20c, respectively. These two guide flanges 19c and 20c are thus directed away from each other and are dimensioned to fit with clearance in the respective hook-shaped or stirrup-shaped top flange 17, 18 of an adjacent drawer profile element, as can be seen from Fig. 1a.

The diameters of the guide flanges 19c, 20c are larger than the respective hook or stirrup opening 17e, 18e, so that the guide flanges 19c, 20c 462 705 6 are securely held in the fitted position (the drawer profile elements are connected by longitudinal sliding). To enable mutual longitudinal displacement with low friction, a substantially cylindrical sliding body 21, 22 is mounted externally on the respective guide flange 19c, 20c. This sliding body 21,22 consists of a plastic material, e.g. polyamide, preferably with the addition of a lubricant, such as an oil molecule mixture, so that permanently low friction with respect to the surrounding aluminum flange 17,18 is obtained. The sliding body 21, 22 can suitably be constituted by a hose, which is cut longitudinally and is pushed or slung onto the respective guide flange 19c, 20, so that it encloses at least most of its cylindrical circumferential surface.

The mutual fit between the sliding guide flanges 17,18 and 19,20 and the sliding bodies 21,22 is such that one guide flange 19c is kept well fixed in its position (upwards-downwards as well as laterally) inside the hook flange 17, while the other guide flange 20c has some lateral clearance as can be seen from the air gap between the sliding body 22 and the side portion 18a of the hook flange 18. In this way, unavoidable manufacturing tolerances can be compensated and jamming can be avoided during the mutual displacement movement of the box profile elements 1a, 1b.

By projecting the top and bottom flanges 17, 18, 19, 20 serving as sliding guide flanges a distance upwards and downwards from the respective profile wall 10, 11, a free internal space 23 is formed between the top and bottom walls 10, of the interconnected drawer profile elements 1a, 1b. 11 between the engaged flanges 17,19 and 18,20, respectively. As will be seen below, this space 23, as well as the inner chambers 15 and 16, are used to securely accommodate different parts of one or more drive belts, by means of which the mutual longitudinal displacement of the drawer profile elements is achieved. On the outside of the respective side wall 12,13, side flanges 24a, 25a, 26a and 24b, 25b, 26b are formed, which together form undercut profile grooves 27a, 28a and 27b, 28b, which can be used for attachment of various equipment details, e.g. for fixing a drawer profile element to a stand, attaching a drive motor to a drive belt or mutually fixing two drawer profile elements arranged at an angle relative to each other (compare other drawing figures 2 - 18).

The load profile elements 1a, 1b according to Fig. 1a also have, in connection with the lower corner edges and the side flanges 26a, 26b, projecting outer cover flanges 29a and 29b, respectively, which are externally flush with the side flanges 24a, 25a, 26a and 24b, 25b, 26b, respectively. and externally with clearance partially encloses the hook or bracket-shaped top flanges 17 and 18 of the adjacent, coupled drawer profile element (16), as a result of which the interconnected drawer profile elements 1a, 1b have common, flat outer side surfaces (with grooves 27a, 28a, 27b, 27b, 27b). the mutually engaging sliding guide flanges 17,19 and 18,20 are well protected inside the common side walls.

A modified load profile element 1c, which corresponds to the upper part (including the partition wall 14) of the element 1a, 1b, is shown in Fig. 1b. Such a drawer profile element 1c with top flanges 17,18, top wall 10, side walls 12,13 with side flanges 24a, 25'a and 24b, 25'b and bottom wall 14 ', respectively, can be connected with their upper side to the underside of a drawer profile element 1a, 1b according to fig. 1a, whereby a compact unit with a substantially smooth underside is obtained.

The interconnected load profile elements, e.g. 1a, 1b and / or lc, may have the same or different lengths. Fig. 2a shows in side view two equally long drawer profile elements 1a and 1b and a substantially shorter drawer profile element 1c. 462 705 'e Drive is effected by means of an electric, pulse-controlled motor 30 (Fig. 2b), which is mounted on one side of the element 1a and by means of a drive shaft (cf. Fig. 1a) projecting into the upper chamber 15 (compare Fig. 1a). not shown) drives a gear 31, which is in driving engagement with a first gear belt 40 serving as a drive loop. This toothed belt 40 extends with an upper part 40a through substantially the entire length of the upper chamber 15 (adjacent to the top wall 10) of the element 1a to a second end-rotatably rotatable castor 32, from which the toothed belt extends back to a nearby, about an axis in the lower chamber 16 freely rotatable castor 33, from which the toothed belt extends with a first end portion 40b in the space 23 between elements 1a and 1b to element 1b in Fig. 2a right end, where the toothed belt is attached at point 41 to the top wall 10 of the element 1b.

From the underside of the drive wheel 31 the toothed belt extends over a freely rotatable impeller 34 located in the vicinity of the drive wheel 31 in the chamber 15 (next to the upper side of the partition wall 14) with an intermediate part 40c to a breaking wheel 35 located at some distance from the casting wheel 33. end portion 40d extends in the space 23 to the other (left) of the element 1b 1b (Fig. 2a), where it is attached at the point 42 to the top wall 10 of the element ib.

To mount the various drive, break and impellers 31-35 and enable the passage of the toothed belt in the area of the partition wall 14, the necessary recesses are drilled or milled from the side in the profile element.

When the drive wheel 31 is driven around by the motor 30, the end portions 40b and 40d will be elongated and shortened, the element 1b being displaced in either direction in the longitudinal direction relative to the element 1a. Thus, by equipping the motor 30, the element 1b can be adjusted in any desired position between two end positions, which correspond to the position of the point 41 at the breaking wheel 33 and the position of the point 42 at the breaking wheel 35, respectively.

In the profile element 1b a second toothed belt 50 is arranged, which forms an almost closed loop. The ends of the toothed belt 50 are thus fastened in adjacent points 43,44 between the castors 35,33 in the bottom wall 11 of the profile element 1a. From these points 43,44 two upper parts 50a and 50b, respectively, extend through the space 23 to each of the elements 1b ends of freely rotatably mounted break wheels 50 and 51. Via adjacent impellers 62 and 63, respectively, a lower part 50c extends on the underside of the bottom wall 11 of the element 1b and through the space 23 between the element 1b and the substantially shorter box profile element 1c, where the toothed belt is attached at point 45 at the top wall 10 of the element 1c.

The toothed belt 50 is not driven by any drive wheel but only serves to give the element 1c a corresponding movement during the mutual movement of the elements 1a and 1b. Thus, when the element 1b is displaced a certain distance in one direction relative to the element ia, the element 1c will be displaced an equal length in the same direction relative to the element 1b. The element 1c is therefore moved at double speed and with double stroke compared to the mutual movement of the elements 1a, 1b.

If desired, the shorter, third load profile element 1c can of course be driven independently of the mutual drive of the elements 1a, 1b. Such an arrangement is shown in Figs. 3a and 3b, where a first motor 30a via a first endless timing belt loop 4Û ', which runs around a drive wheel 31' and a break wheel 32 'placed at each end of the element ia and is attached to the element 1b at a point 46, drives the element 1b in relation to the element ia, while a second motor 30b via a second, likewise endless toothed loop 50 ', which runs around a drive wheel 46' and a break wheel 61 ' placed at each end of the element 1b and attached to the element 1c at a point 47, drives the element 1c relative to the element 1b.

Figs. 4a and 4b show a simpler embodiment with only two load profile elements, namely a longer element 1a and a shorter element 1c, which is driven by a motor 30 via an endless toothed belt loop 40 arranged in the element 1a to the element 1c at the point 48. '.

A similar one compared with Fig. 2a, although a slightly modified embodiment is shown in Figs. 5a and 5b. The difference is that the upper element 1'a is shorter than the element 1b and that the first toothed belt 40 "is laid around a drive wheel 31" placed between and slightly above the breaking wheels 33,35.

The arms shown in Figs. 2a - 5a, provided with a longitudinally displaceable element ic, are normally intended to be mounted horizontally. In many applications, it is desirable to be able to raise and lower such an arm. For this purpose, the invention proposes a vertical guide with one or more vertically displaceable slides, on which a horizontal arm is mounted.

A first embodiment of such a vertical guide is shown in Fig. 6a, wherein a vertically oriented load profile element 70 of the same type as the element ia in Fig. 1a included in a stand has a slide 71 connected thereto corresponding to the element 1b in Fig. 1a. Drive takes place in the same way as with the horizontal arms, namely by means of a motor 30 (see Fig. Bb), which via a drive wheel 31 'drives an endless toothed belt loop 40', which runs around a break wheel 32 'and is attached to the slide 71 at a point 49. To balance the weight of the arm 1 (dashed line in Fig. Ba) and any load, a counterweight 72 is applied to the portion 40'a opposite the slide 71 opposite the toothed belt loop. 40 '. The counterweight 72 is flat and elongate and runs in the inner chamber of the profile 73 corresponding to the chamber 15 in Fig. 1a.

A second embodiment of the vertical guide is shown in Figs. 7a and 7b, in which two spaced apart leather profile elements 70a, 70b each have a slide 71a and 71b, respectively, corresponding to the element 1c in Figs. 1b. The units 70a, 71a and 70b, 71b have the slides lying in different planes, so that an arm 1 '(dashed in Fig. 7b) can be attached therebetween at different places in the longitudinal direction of the arm 1', whereby good stability is obtained, and the secondary driven slide 71a provides a balancing of the forces in the slide 71b. The slides 71a and 71b are driven synchronously by means of a motor 30, which is connected partly directly to a timing belt loop 40'b in the unit 70b, 71b, partly via a timing belt 72 and a transfer shaft 73 to a timing belt loop 40'a in the unit 70a, 71a.

Figs. 8a and Bb show a third embodiment of the vertical guide with two adjacent leather profile elements 70c, 70d, which between them have a slide 71c connected to both elements, which is driven vertically by means of two synchronously driven motors 30c, 30d, which are in driving engagement with each toothed belt loop connected to the slide 71c.

Fig. 9 shows a device for rotating a dashed frame column PS around a vertical axis line P, which frame column PS carries a horizontal arm, for instance while conveying a vertical guide of the type described above. On a foundation 80, for example a workshop floor, a lower support plate 81 is screwed in a horizontal position, and on this support plate 81 an upper support plate 82 is rotatably mounted by means of a bearing with a stationary bearing part 83 attached to the lower support plate 81. and a bearing portion 84 rotatable therein. The stationary bearing portion 83 carries a radially externally located gear ring 85. The upper, rotatable support plate 82 has a motor 86 mounted thereon with a drive wheel 87, and around the gear ring 85 and the drive wheel 87 are a closed timing belt loop 88 is laid, whereby the upper support plate provided with the motor 86 can be caused to rotate with the frame pillar PS supported therefrom around the vertical line P.

Figs. 10a and 10b show a section of an arm, for example according to Figs. 2a, 3a, 4a or Sa, where the relatively short box profile element 1c is releasably coupled longitudinally with another, leather profile element engaging with the element 1a or 1b. 1'c carrying a schematically shown handling or processing device 90. The mechanical connection between the elements 1c and 1'c is effected by means of side plates 91, which are screwed into both elements, while electrical and / or pneumatic connections are provided. automatically through plug-in connections 92 (Fig. 10b).

Fig. 11a shows an example of a rotatable holder plate 93, which is mounted on the end of the element 1'c and which is adjustable in the desired rotational position by means of a timing belt transmission 94 and an electric motor 95. The holder plate 93 carries a gripper (not shown) which can thereby be rotated as desired.

In the variant according to Figs. 12a and 12b, the holding plate 93 is replaced by a holding arm 96, which carries an operating cylinder 97, the piston rod 97 'of which can also pivot a holding body 98 about a joint 99. The holding body in this case carries two holding plates 93a, 93b , each carrying its own device (not shown).

The units described so far can be combined in a number of ways, and some such combinations are shown in Figs. 13 - 18. The device shown in Fig. 13 comprises a frame stand RS1 with four legs 100a-d, bearing a rectangular frame 101a-d.

At two opposite frame sides 101a and 101c, a drawer profile element 1'a is suspended, which drawer profile element 1'a engages in an arm of the type shown in Figs. 5a, 5b. The schematically shown gripper 90 on the element 1c can thus be moved linearly to the desired position and move an object (not shown) along the linear path of movement.

The device according to Fig. 14 has a frame frame RS2 with four legs 100a-d, two longitudinal frame beams 102a, b, a cross beam 103 connecting them with a rocker bearing device 104, and beams 105a-d directed obliquely upwards from the respective legs, which are in pairs at the top joined by means of an upper cross beam 106. In the latter an inclined operating arm 107 corresponding to Fig. 4a is pivotally mounted, the element 1c of which is hingedly connected to an operating arm 108 which is pivotably mounted in the tilting bearing device 104, which likewise corresponds to Fig. 4a and has a gripper 90 on its element 1c.

The gripper 90 can thereby be moved as desired in a vertical plane in the angular sectors defined by the possibility of tilting movement of the arm 108 between two end positions.

The device according to Fig. 15 comprises a stationary column stand PS1 with two vertical guides 108a, 108b according to Figs. 6a, 6b, the slides 71 of which are driven synchronously and by means of brackets 109a, 109b support two parallel, mutually synchronously operating, horizontal operating arms 110a, 110b corresponding Fig. 5a, 5b.

The elements 10o of the latter are connected to an operating arm 111 oriented perpendicularly to the arms 110a, 110b, likewise corresponding to Figs. 5a, 5b. The operating arm 111 has a composite element 1c, 1'c with replaceable holder part 1'c for the desired gripper, for example according to any of Figs. 10a, 11a, 12a. It will be appreciated that the optionally shown, possibly rotatable and / or pivotable gripper can thereby be moved as desired in all three dimensions. A device according to Fig. 15 can suitably be used as a feeder for a machine tool, such as a press or the like.

The device according to Fig. 16 comprises a stationary column stand PS2 with a vertical guide 112 according to Figs. 7a, 7b and an operating arm 113 according to Fig. 4a (in combination with Figs. 10a, 11a or 12a), so that the gripper (not shown) on the holder part 1'c can be moved as desired in a vertical plane. The desired movement pattern can be programmed via a control panel 114 to a microcomputer (not shown), which controls the motors of the various drive devices. The device can be used as a simple picking robot.

The device according to Figs. 17a and 17b comprises a rotatable column frame PS3, which is mounted on a rotating device 115 corresponding to Fig. 9 and by means of a vertical guide according to Figs. 7a, 7b supports an operating arm 113 according to Fig. 4a (in combination with Figs. 10a, 11a or 12a), so that the arm 113 can be pivoted about the vertical axis line P, raised or lowered along the vertical guide 112 and adjusted (element 1c, 1'c> horizontally to the desired position. Thus, the gripper 90 'can be moved in three dimensions within a cylindrical working area.

This device can, for example, be used as a robot for moving workpieces in connection with one or more processing machines, conveyors and / or warehouses. Also in this case, the desired movement pattern can be programmed via a control panel 114. As can be seen from Fig. 17b, the gripper 90 'in this case consists of two gripping elements 116a, 116b mounted on each pivotable arm 117a and 117b, respectively. However, the gripper is easily replaceable, as the holder part 1'c can easily be replaced with another holder part with the desired handling or processing device.

The device according to Fig. 18 substantially corresponds to the device according to Figs. 17a, 17b. However, the operating arm 118 is formed 462 705 s according to Fig. 2a (in combination with Figs. 10a, 11a or 12a), and furthermore the rotatable pillar frame PS4 is movable on rails 119a, 119b along a predetermined path, for example on a workshop floor.

In addition to further combinations of racks and arms, the inventive concept can be applied in various ways with regard to the design of the box profile elements and the drive devices.

The loading profile elements can thus be provided with differently designed and differently placed sliding guide flanges. For example, a centrally located flange located at the top and a complementary designed flange located at the bottom of the respective elements may suffice, whereby the required stability can be achieved by means of sliding surfaces or sliding rails formed on either side of the respective flange, so that the central flanges ensure that the elements are not moved apart from each other and the outer slide guides prevent mutual tilting. Furthermore, the life 14 can be omitted in simpler embodiments or replaced by several partitions, if more internal chambers in the drawer profile elements are desired, for example for controlling several different drive loops or loop parts.

The drive loop or loops can further be replaced by other loop elements than toothed belts, e.g. ropes, chains or ribbons provided that they are not stretchable.

Claims (21)

10 15 20 25 30 '462 7Û5 16 PATENTKRAV Material handling or processing device with an arm (108, 111,113,118) mounted on a stand (RS1, RS2, PS1, PS2, PS2, PS3, PS4), which carries a handling or processing device (90) displaceable in the longitudinal direction of the arm, wherein the arm consists of at least two profile elements (1a, 1b, 1c-1'c), which are slidably arranged relative to each other and have mutually interlocking slide guide flanges (17,18,19,20), one of the profile elements (ic-1 ' c) supporting said device and wherein mutual displacement of the profile elements is effected by means of a drive device with at least one drive loop (40,50), which runs around at least one drive or impeller (31-35,60-63) of a first profile element (1a and 1, respectively). lb) and is connected to at least one second profile element (1b, 1c and 1a, 1c), respectively, characterized in that the profile elements (1a, 1b, 1c-1c ') consist of drawer profile elements with a substantially rectangular, closed cross-section; - that the loading profile elements are arranged next to each other in such a way that the outer side surfaces of two adjacent, interconnected loading profile elements lie in common planes; - said sliding guide flanges (17,18,19,20) are located in pairs (17,19 and 18,20 respectively) at adjacent corner portions of two interconnected drawer profile elements (1a, 1b); - that the sliding guide flanges (17-20) project a distance from the rectangular cross-section in the direction of resp. adjacent drawer profile elements, so that a free space (23) for at least one drive loop part is formed between two interconnected drawer profile elements; and - that at least one other drive loop part runs in an internal chamber (15,16) inside the closed cross-section of a load profile element. 10 15 20 25 30 35 462 705 17 Device according to claim 1, characterized in that the drive loop (40 ') is closed and runs around a drive wheel (31') and an impeller (32f) placed at each end of said first load profile element (1a) (Fig. 3a , 4a>. Device according to claim 1, characterized in that the drive loop (40,40 ') has two ends (41,42) attached to each end of said second load profile element (1b), the drive loop running around at least three wheels (31 -35; 31 ", 33,35) of said first charge profile element (1a; 1'a) (Figs. 2a, 5a). Device according to claim 3, characterized in that the arm also comprises a third, longitudinally displaceable drawer profile element (1c-1c '), and that a second drive loop (50) is connected to said first and third drawer profile elements ( 1a, 1c) and runs around rollers (60-63) of said second load profile elements (1b), whereby all three load profile elements (1a, 1b, 1c) are displaced relative to each other when driving the first drive loop (40) (Fig. 2a, 5a). Device according to claim 4, characterized in that the end portions (40b, 40d) of the first drive loop extend from the respective end (41, 42) of said second load profile element (1b) along its side facing the first load profile element (1a) to one of two longitudinally spaced break wheels (33, 35) of the first load profile element (1a; 1'a) and that the second drive loop (50) is connected (43, 44) to the first load profile element ( 1a; 1'a) between said two break wheels (33,35) (Figs. 2a, 5a). Device according to any one of claims 1 - 5, characterized in that said drive device comprises an electric motor (30) coupled to a drive wheel (31), which is in driving engagement with a drive loop (40). 10 15 20 30 462 705 18 Device according to one of Claims 1 to 6, characterized in that the respective drive loop consists of a toothed belt (40). Device according to one of Claims 1 to 7, characterized in that the sliding guide flanges (17, 19 and 18, 20), respectively, are in pairs substantially complementarily designed seen in cross section. Device according to claim 8, characterized in that two at the longitudinal edges on one side (10) of resp. load profile elements (1a, 1b) located sliding guide flanges (17,18) are hook-shaped or bracket-shaped and face each other, while two sliding guide flanges (19,20) located at opposite longitudinal sides (11) are turned away from each other and dimensioned to fit inside the hook-shaped or stirrup-shaped sliding guide flanges (17, 18) of an adjacent profile element (Fig. 1a). Device according to claim 9, characterized in that each drawer profile element at said opposite side has outer cover flanges (29a, 29b), which partially enclose the hook or stirrup-shaped sliding guide flanges (17, 18) of an adjacent profile element (Fig. 1a) . n Device according to one of Claims 1 to 10, characterized in that at least certain box profile elements (1a, 1b) have an inner web (14) which connects two side walls (12, 13) and separates forward and reciprocating drive loop parts. apart (Fig. 1a). Device according to one of Claims 1 to 11, characterized in that the side walls (12, 13) of the load profile element have undercut profile grooves (27a, 28a, 27b, 28b), which enable easy attachment of equipment details. (Fig. 1a). 10 15 20 25 30 46 NJ 705 19 Device according to one of Claims 1 to 12, characterized in that the load profile elements (1a, 1b, 1c, 1'c) are constituted by extruded aluminum profiles, at least some of the mutually engaging sliding guide flanges (19c, 20c) has a friction-reducing sliding layer (21,22), e.g. of plastic material. Device according to any one of claims 1 - 13, characterized in that the box profile element, which supports said device (90), is divided longitudinally into a permanent part (1c) and a replaceable part (1'c), carrying said device (90), which is thus easily replaceable. Device according to one of Claims 1 to 14, characterized in that the arm is supported substantially horizontally by the frame, the drawer profile elements (1a, 1b, 1c, 1'c) being arranged one above the other (fig. 13 - 18). 16. ° 16. Device according to claim 15, characterized in that the arm (108) is supported tiltably between its outer ends, one end portion of which is articulated connected to an operating arm (107) (Fig. 14). Device according to claim 15, characterized in that one end portion of the arm (111) is supported by two equally horizontal, mutually parallel, mutually parallel operating arms (110a, 110b), which are supported at their opposite ends by a vertically displaceable slide (71.71) (fig.15). Device according to claims 15, characterized in that the stand consists of a vertical pillar (PS1, PS2, PS3, PS4), along which the arm (111,113,118) is adjustable in height. 10 15 462 7Û5 20 Device according to claim 18, characterized in that the column has at least one vertical guide (108a, 108b; 112) in the form of a drawer profile element (70; 70a, 70b; 70c, 70d) of the same type as in the extendable arm and a correspondingly shaped slide (71; 71a, 71b; 71c), in which the horizontal arm is suspended (Figs. 6a, 7a, 8a, 15,16,17,18). Device according to claim 19, characterized in that the column has two vertical guides (70a, 71a and 70b, 71b, respectively), one on each side of the horizontal arm (1 '), one vertical guide being offset relative to the other in the arm. longitudinal direction (Figs. 7a, 7b, 16,17,18). Device according to one of Claims 18 to 20, characterized in that the column is rotatable about its own vertical axis (P) (Figs. 9, 17a, 17b, 18). f »