DE6922723U - DEVICE ON WELDING MACHINES FOR THE MANUFACTURE OF BELTS - Google Patents

Description

Device on welding machines for the production of belts

The invention enters an apparatus on ... welding machines for Manufacture of belts from weldable plastics and has the purpose of expanding the area of application of the well-known belt welding machines expand so that the belts at the same time as the welding process Color borders are decorated.

It is known to produce bent belts with a colored edge in such a way that that belt fabric of about twice the belt width is coated with glue on the underside, while on the top Two colored strips are applied across the width of the belt, after the belt has been folded over and the middle part is glued to the folded over Side parts result in a belt with a colored border on both sides These "adhesive" belts are of course decorated with a colored border also possible by applying paint to the edges of the folded and glued belt.

In addition to colored edge decorations on adhesive belts, it has also been suggested to provide belts made of weldable plastic with striking colored edges. In doing so, those known per se are used Welding machines in which plastic pieces of the respective belt length and several belt widths on one horizontally »available Slide table are placed, which is then made under a welding field a lifting and lowering table top equipped with protruding welding electrodes to the extent of the respective predetermined belt widths when lowering or placing them on the shaking table lying plastic, the welding electrodes are energized for the welding process.

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With these commercially available welding machines is according to the known Proposal to decorate the belt with colored edges during the welding process solved in such a way that with the öchlittentisch and the piece of plastic placed on it a soaked with rarbiquid Fabric web is moved along. In the welding area of the machine, the electrodes then press the table top, which has been lowered into the working position Color liquid of the fabric web on the belt fabric and thus bring the electrode arrangement that determines the belt widths at a distance I 'stripes on, which in the later, through the üDbt - nd the electrodes certain division of the plastic piece into the individual Belts result in effective colored borders for this.

The shortcomings of this proposal for the production of belts provided with colored edges from weldable plastics are manifold. First of all, the impregnation of the fabric web with dye liquid is laborious and tedious and because the impregnation of the fabric with dye, which has to be renewed from time to time, is laborious and tedious. In addition, the service life of the fabric web is limited, since it is subject to a strain due to the impression of the electrodes in the belt fabric, which makes the fabric web unusable in a relatively short time and requires its expensive replacement. In addition to the deficiencies mentioned, it is also important in terms of work that the web of fabric soaked with color liquid not only transfers the color as color strips to the welding strip points determined by the electrodes, but also more or less smears the entire belt surface, so that the color smears on after welding the belt surfaces with a lot of cleaning rag have to be laboriously removed. The necessary removal of the paint from the belt surface also has the disadvantage that, instead of using weldable materials, printing inks that dry slowly and can still be wiped off can be used as the paint liquid.

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enriched dye solutions, which get into the Welding in belt edges and therefore immediately after welding without prolonged drying is indelible and also durable in the long term.

The invention has set itself the task of eliminating the deficiency, which are associated with the use of fabric sheets soaked with colored liquid for the production of belts with colored edges. The invention solves this problem by equipping the welding machines known for producing belts from weldable plastics of the type mentioned above with a device according to the invention from one arranged on the slide table at the entrance of the welding field of the machine, consisting primarily of felt, there is a roller impregnated with color liquid from which the color liquid when moving the slide table into the welding field on the electrodes of the lifting and lowerable table top is applied, the electrodes of which the applied color is applied when the table top is placed on the Plastic initiated welding process as longitudinal colored stripes weld onto the plastic.

The electrodes can be used to weld on colored strips the plastic can still be used by means of a corresponding surface design, such as engravings in herringbone or other effective patterns, attractive relief effects in the color edges of the Imprint belt.

For even color transfer over the length of the welding field from the felt roller to the electrodes, it is advisable to move the felt roller from an adjacent one, about half the circumference, into the paint liquid of a trough immersed roller, mainly steel roller, running over the entire stroke of the slide table with F.urb liquid to supply.

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It has proven to be useful to open the felt roller through their axes end seated and outside the trough on guide rails to rotate hard rubber rollers that roll off the welding machine. ' Due to the size of the rubber rollers, the employment of the. Felt roller adjustable to the electrodes, i.e. the pressure of the felt roller against the electrodes under which it passes can be adjusted so that just transfer the correct amount of dye to the electrodes will.

In the drawing is an embodiment of an inventive Device shown on welding machines for the production of belts with colored edges and that shows

1 in a thematic representation, a side view of the welding machine on which the device according to the invention for the usability of the machine for producing belts with colored edges is installed,
Fig. 2 shows, on a larger scale, the device for ink transfer

to the electrodes in cross section and FIG. 3 in longitudinal section.

Before explaining the device with which known welding machines for the production of belts with colored fringes are able to be, briefly the structure and the operation of the well-known in the whole Belt welding machines outlined.

In a box part 1, which is closed at the top and at the side, a table top with several rows protruding from the underside of the top, Electrodes 2 provided in the respective width of the belt to be produced can be raised and lowered. The welding field 3 A frame 4 is pre-built under the box part 1, on which a carriage table 5 is guided in a longitudinally displaceable manner. ^

This can be done after placing a piece of plastic the length of a belt and multiple belt widths into the welding field by push button control 3 of the machine can be retracted. By a second push button control a lowering of the table top with the electrodes 2 contained therein is triggered and the electrodes are pressed onto the belt fabric Electrodes are energized for the welding process. After completion of the welding, the table top is with the Electrodes 2 back up and the ochlittentisch 5 back in the loading position pulled back. After removing the piece of fabric welded along the belt edges, the welding process can be carried out for a new one Pieces can be repeated in the same manner.

To manufacture the machine without changing the way you work To make belts with o '& rbrand suitable is the Mascnine with equipped with a useful device for transferring dye to the electrodes 2. This device is at the end of the Carriage 5 is arranged in front of a welding field 3 of the machine and consists essentially of a felt roller 6 soaked in color liquid. This lies with its upper surface line far above the alternately slightly protruding and recessed ends of the electrodes 2, that also nocli on the recessed points of the electrodes Color liquid is applied. The felt roller is constantly filled with liquid paint through a steel roller resting on its lower circumference 7 supplied, which is immersed with about half its circumference in the jj'arbflässigkeit 9 contained in a trough 8. The steel roller 7 is loosely rotatably mounted in the i'rog housing 8 and contains their rotational movement for the transfer of .ye to the felt roller 6 by its own Revolution. This is expediently not, or at least not exclusively, by unrolling the felt roller 6 on the electrodes 2 at the Displacement of the slide table 5 caused, because then a possible random grinding on the felt roller 6 on the electrodes 2 could lead to a different color transfer to the electrodes, £ Λ O O ** 9 Q O - 6 -

.: o! i: .e - r. .υ: ·.-η ... u. .en _{; i} CiBenien 10 of the felt roller 6 seated and outside de ..; Trough 8 on guide rails 11 of the welding machine rolling hard rubber rollers 12, by the size of which at the same time the position of the mushroom roller 6 to the electrodes 2 can be precisely adjusted.

The operation of the machine is controlled by the device according to the invention not changed for color transfer. After hanging up one Plastic pieces are placed on the table 5 in the welding field 3 of the machine «The felt roller transfers 6 dye on the electrodes 2. At the end of the stroke of the slide table 5 is the Device for transferring ink from the felt roller 6 to the electrodes 2 moved out of the side of the machine, as shown in Fig. 1 in dashed lines. Now the lowering can of the electrodes 2 in the welding position. After completed Welding, the electrons are raised again and the carriage table 5 with the color transfer device 6, 7> 8, 9, 10, 12 is returned to the starting position. That with Plastic stucco with welded colored stripes is removed and can then be done on conventional cutting machines by separating the piece along the centers of the welded-in color strips can be broken down into the individual belts.

The device for color transfer is not on the generation limited by fur edges on belts made of weldable plastics. It is also suitable, for example, for the production of colored and ornamental central stripes on belts by accordingly ornamented electrodes on the raised and lower table top The belts are roped in the middle of the longitudinal center.

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The device is not limited to the production of colored borders on belts, but can be used to produce colored borders to other structures made of weldable plastics, such as the edges of book covers and covers in the same way of working be used"

Claims (4)

<»Ft 4» «ϊ · I claims for protection 1) Device on welding machines for the production of belts made of weldable plastics, which are designed as a flat structure of respective belt length and several belt widths can be placed on a horizontally movable carriage table and then under a welding field consisting of a liftable and lowerable one equipped with protruding welding electrodes in the measure of the belt widths The table top can be moved when it is lowered or placed on the plastic piece resting on the slide table the welding electrodes are energized, characterized in that the welding field is entered on the carriage table the machine a predominantly made of felt, soaked with color liquid roller (6) is arranged, of which the Color liquid when moving the conveyor table (5) into the welding field (3) on the electrodes (2) in the upper stroke position, The table top that can be raised and lowered is applied, the electrodes (2) of which have the applied color under the when put on the table top on the plastic initiated welding process as a longitudinal color stripes at the distance of the intended Weld belt widths onto the plastic. 2) Device according to claim 1, characterized in that the electrodes (2) except for the welding of colored strips on the Plastic at the same time through a corresponding surface design, such as engraving in herringbone or other effective Patterns, decorative relief effects in the color edges imprint the belt. 3) Device according to claim 1, characterized in that the felt roller (6) for the color transfer to the electrodes (2) of a roller (7), primarily a steel roller, immersed in the color liquid of a trough with about half the circumference Color liquid is supplied. 4) Device according to claims 1-3, characterized in that the Felt roller (6) by sitting on their axle ends (10) and rolling outside the trough on guide rails (11) of the welding machine Hartgum.miwalzen (12) is rotatable and due to the size of the Rubber rollers (12) the adjustment of the felt roller (6) to the electrodes (2) can be regulated.