PRODUCTION STAND, ESPECIALLY FOR ASSEMBLY WORK

Abstract: Production stand especially for assembly work. The production stand includes a table plane adjustable in height and means (1, 2), moving with the table plane and preferably adjustable in the lateral direction, for receiving a jig (3) for an apparatus to be assembled. The jig (3) is rotatably mounted in the receiving means and is lockable in different positions, thereby leaving both hands of the employee free for the assembly work.

Description: Production stand, especially for assembly work The present invention relates to a production stand, especially for assembly work, having a table plane adjustable in height. - The assembly work of e.g. electronic apparatuses includes numerous different steps, and high efficiency as well as great accuracy are required of the employee. Previous production stands for assembly work have com- prised a conventional table board, upon which the apparatus under work is placed unattached. For holding and turning the apparatus into different positions, the employee has only had his own hands, and when these have not been sufficient the apparatus has had to be held e.g. between the knees of the employee. -It is known to make the table board adjustable in height but this has not provided a substantial relief and the assembly work has remained rather laborius and slow. The fact that the apparatuses to be assembled often are very expensive and are liable to damage has further increased the working stress. The object of ' the invention is to provide a new production stand which substantially facilitates especially the performance of assembly work. The production stand according to the invention is mainly characterized in that it comprises means, preferably moving with the table plane, for receiving a jig for the apparatus under work, and in that said jig is ** rotatably journalled in its receiving means. When the apparatus under work is mounted in the jig which is rotatable and preferably lockable in different positions, the apparatus to be assembled stays firmly in place and can be turned into different positions according to the need, and the employee always has both hands free for the actual work. The apparatuses to be assembled may be of various kinds and may differ substantially from each other, wherefore it is recommendable to use a specially viro designed jig for each type of apparatus and the means for receiving the jig are thus preferably movable in the transverse direction of the production stand. In a preferred embodiment of the invention, enabling the above, the production stand comprises a transverse bar attached to the legs of the production stand and placed at the back edge thereof, the receiving means for the jig being formed as arms movable along this bar, and outside the arms are mounted table boards which are attached to .the same bar and are movable along it. To the production stand of the invention is prefer¬ ably further connected an upper frame, on which frame may be mounted a lighting fixture, special tools, shelves for accessories etc. In the following the invention will be described in more detail with reference to the enclosed drawing. Figure 1 shows one embodiment of the production stand according to the invention, seen from the front. Figures 2 and 3 show the body of the production stand as seen from the front and from the side, respectively, with only the jig and its receiving arms mounted thereon. Figure 4 shows a fixing member by means of which the upper frame is mountable on the table board. The table plane of the production stand according to the invention comprises arms 1 and 2, to which is attached a jig 3 for an apparatus to be assembled, and table boards 5, 6 on the sides. The arms 1 and 2 and the table boards 5 and 6 are mounted on a transverse bar 4 at the back edge of the production stand, e.g. by means of members 7 gripping around the bar. Said members 7 are movable along the bar 4 and are lockable into desired positions by means of a locking screw 8 extending through each member 7 and engaging the bar 4. In figure 1 only the mountings of the table boards 5 and 6 to the bar 4 are clearly to be seen, the arms 1 and 2 are preferable mounted in the same manner. The body of the production stand is formed by a stationary base support 9 with stationary, tubular legs 10, leg extensions 11 movable up and down within the legs 10, and the bar 4 which is mounted on the leg extensions 11. The power required for moving the leg extensions 11 and the bar 4 up and down is provided by an electric motor 12, the foot operated switch of which is designated 13. The jig 3 to be mounted in the arms 1 and 2 is in the drawing only shown as a schematic frame, in reality the jig in question is, however, mountable in the arms 1 and 2 just in a same way as is shown in the drawing. In both arms 1 and 2 is journalled a receiving member 14 and 15, respectively, which grips around the frame 3 and to which the frame 3 is fastened by means of locking screws 16 and 17 extending through members 14 and 15 into engage- ment with the frame 3. The mounting of frame 3 to the arms 1 and 2 is thus rather similar to the mounting of the arms 1 and 2 on the bar 4. The receiving member 14 is lockabLy journalled in the arm 1 e. ' g. by means of gear wheel attached to the journal pin within the arm 1 , and a latch 18 engaging the teeth of the gear wheel. The latch 18 is preferably provided'with a spring returning the latch automatically to locking position after release. The receiving member 15 may be freely rotatable in the arm 2. To the body of the production stand, preferably to the upper ends of the moving leg extensions 11, may be attached a frame 19 extending upwards from the table plane, in which frame are mountable e.g. a lighting fixture 20, a holder 21 for a special tool and a shelf 22 for accessories. For the arrangement of these devices at desired height the frame 19 has numerous mounting apertures 23 for interacting fastening members 24. The special tool referred to may be e.g. a solder tool, which is hung in a pivotable arm 26 provided with a spring 27 for returning the arm 26 to the upper position shown after the solder operation. The frame 19 together with accessories above the table plane is alternatively mountable on the table board using a fastening means 28 shown in figure 4. This fastening means 28 comprises two jaws 29 and 30, between which the edge of the production stand is placed, up to the bolts 31 and 33. The jaws 29 and 30 are at first clamped together by means of the bolts 31 and 33; for the bolt 33 is naturally provided a nut corresponding to nut 32. If the mounting were made using only bolts 31 and 33, the jaws 29 and 30 would tend to pivote off the surface of the table board around the corner edges and the clamping force would concentrate exclusively to these corner areas, close to the bolts 31 and 33. In order to avoid this the final clamping of the jaws is made using a further bolt 34 which is threaded through one jaw 29, and engages against the other jaw 30, and due to which the jaws 29 and 30 swing back around the corners of the table board back. The table board will thus be clamped between the jaws 29 and 30 over their whole area. In this manner the attachment to the edge of a table board is very firm without any need for making fastening holes in the table board itself. The clamping jaws 29 and 30 are, in their parts outside the edge of the table board, provided with openings through which a frame 19 can be brought. The frame is locked in place e.g. by means of a bolt 35. This way of fastening can, if desired, further be used for the height adjustment of the whole table plane of the production stand, whereby frame 19 would extend down to the floor and would form stationary support legs for the production stand, although the height adjustment of the production stand in this manner would not be as convenient as in the manner disclosed in connection with figures 1 to 3. If a stationary mounting frame 19 extending down to the floor where used, the table plane together with its yokes could be fastened thereon using the same kind of fixing members as have been disclosed in connection with the lighting fixture, the special tool and the shelves for- accessories.

Claims: Claims: 1. Production stand, especially for assembly work, having a table plane adjustable in height, c h a r a c t e r i z e d in that it comprises means (1 , 2), preferably moving with the table plane, for receiving a jig (3) for the apparatus under work, and in that said jig (3) is rotatably journalled in its receiving means (1 , 2) . 2. A production stand according to claim 1, c h a r a c t e r i z e d in that the means (1 , 2) for receiving the jig (3) are adjustable in the lateral direction. 3. A production stand according to claim 1 or 2, c h a r a c t e i z e d in .that the jig (3) is journalled locably. 4. A production stand according to claim 2, c h a r a c t e r i z e d in that the means for receiving the jig (3) comprise arms (1, 2) movable along a bar (4) extending in the lateral direction of the production stand. 5. A production stand according to claim 4, c h a r a c t e r i z e d in that outside the arms (1 , 2) are mounted table boards (5, 6) movable along the same bar (4) extending in the lateral direction of the production stand. 6. A production stand according to claim 4 or 5, c h a r a c t e r i z e d in that said bar (4) is mounted on the legs (11) of the production stand, said legs being movable in the vertical direction, in a manner known per se. 7. A production stand according to claim 4, c h a r a c t e r i z e d in that a frame (19) for a lighting fixture,- tools, a shelf for accessories etc. is connected to the legs (11) of the production stand, and extending above the table plane.

Inventors: HAAPALAINEN TOIVO, KORTEIKKO PERTTI, MAEKINEN MATTI, HAAPALAINEN, TOIVO, KORTEIKKO, PERTTI, MAEKINEN, MATTI
Applicants: SOHLBERG AB OY G W, OY G.W. SOHLBERG AB
Application year: 1982
Main classification: B25H1
IPC codes: B25H1