DE1671869A1 - Process for the production of tubes for tube electrodes in electrical accumulators and device for carrying out the process - Google Patents

Description

Method for placing tubes for tube electrodes in electrical Accumulators and device for carrying out the method The invention relates to a method for producing, in particular, tubes that are connected in groups for tube electrodes in electrical accumulators, called a flat structure is shaped into tubes on rods and stiffened in this form.

There are several methods of making the named tubes known. For example, it has been proposed to use each individual lead electrode To wrap thermoplastic plastic fabric, the plastic until it melts to warm up and thereby reduce the tissue porosity at the same time Bring shrinking.

According to another known method, a double gowebe is made from plastic threads produced, which later into tubes to be formed iliac spaces next to each other having. So that the tubes are elastic on the one hand with the necessary stiffening remain enough and, on the other hand, have sufficient porosity a miso thread is used in this process for the production of the double weave at least two types of thermoplastic fiber that have different softening points have so that when pulling on a core and initially moderate heating the tissue rests close to the core and then with further heating the The lower melting plastic component softens, while the plastic component is now begins to contract with the higher melting temperature. The melting plastic component thereby fixes the plastic component, which only softens at a higher temperature.

Also known are woven tubes made of plastic, which by Heat become hard and thus acquire the necessary rigidity.

Furthermore, woven tubes made of other materials or are known along with'oplastics that are immersed in solutions or emulsions and exposed to heat be pre-stiffened.

The first-mentioned method is costly to carry out and time consuming because the electrodes must be wrapped individually. The known In addition, the method can only be used if the electrodes are sufficiently strong.

The second-mentioned method, in which to tube pockets to be formed are made in a double weave has the disadvantage because # you have to work with a specially adjusted weave. Here is it is difficult to maintain constant spacing between the pockets, d. H. the later Tubes to adhere to. The already cut semi-finished workpieces must individually mounted on bars for heat treatment and the resulting stiffening will. Since a solelies process cannot be carried out continuously, it works uneconomically.

The object of the invention is to provide a method of the aforementioned Art to design in a simple way so that the starting material is simple, flat Area formed from suitable materials and used the process as a whole can be carried out continuously and therefore with high performance. To the solution To this end, the invention provides that two continuously fed in, one above the other lying flat structures in the longitudinal direction parallel to each other, by spacing lines separated from each other and sewn to this Way formed pockets are widened to tubing after which the material of the Flat structure stiffened and the length of the desired tube corresponding Sections being separated. When working according to this procedure, it is possible. Fabrics Any length and width to be processed into tubes, dio in the width of the processed Corresponding number of lanes are connected in groups, the length of which corresponds to each desired purpose can be adapted without further ado and not in a special Work process I: need to be introduced again.

It is even possible to use thicker and thinner tubes at the same time to produce by only the distance between the longitudinal seams, for example in part of the fabric, is changed to one another.

The surface structures to be processed can be woven, knitted, knitted, be braided or fleece. There is also the possibility of several flat structures, which consist of different material ions, for example inside the tubes a glass fleece, glass fabric, and outside a polyester fleece or polyester fabric assemble. Samit can be erroiclit, dal3 glass, which has a good filter effect there, but is not as resistant, with the polyester fabric on the outside, which is acid-resistant, is processed.

The method according to the invention can be carried out with simple technical means Carry out funds. A device suitable for this purpose is characterized according to the invention characterized dal3 flat structures brought together between the two supply rolls one of the number of parallel tubes to be produced in the workpiece corresponding number of rods is arranged, each of which consists of a thin rod Section and an adjoining thicker, round section consists, welcler the latter determines the inner shape of the tube in question, with the thinner Sections of the rods a sewing device is arranged, which the Flat shape according to the later tube thickness in strips in the longitudinal direction connects with each other and wherein the thickeron sections of the atabo in a fixation device for the processed fabrics lie or form part of the same.

The tubes can be stiffened by using various plastics in the material of the fabric or by adding a special material below Exposure to heat, by immersion or by spraying on a suitable solvent or a suitable emulsion.

The rods widening the tubes can be hollow; When hot air is introduced, the tubes melt *) due to the heat inside and thereby maintain a smooth inner wall, so that it is easier to interact with active Fill mass lassons *) when using suitable plastics Because the to be used Rods a dependent on the space requirement of the sewing device and the fixing device Must have length, but on the one endo on which the treated "l '{piece expires, end free-flying, it is advisable to attach the Sstäute by spacing in the longitudinal direction to guide and support separate bodies by rollers, these Rolls also serve to guide the fabric.

The tube-forming flat congos can be transported by nadol belts or rollers take place, which are provided behind the fixing device and sorait pull the material to be processed through the device. To the Vorziehon the flat structure pre-cleaned into tubes can also be used with friction rollers, which are formed on the circumference corresponding to the bulge of the tubes.

The% fixation of the tubes in their final form can, as mentioned, can be done in different ways, depending on the materials being processed. A simple one The possibility is to provide the fixing device with spray nozzles that Dissolve a liquid that dissolves the plastic components of the fabrics, and then run the workpiece through a drying strooke after spraying allow.

The sewing together of the sheet-like structures forming the starting material is easier than making one with tubular cavities Double weave. Since the fabric is essentially flat during the mowing process lie on top of one another, because in the area of the sewing device the shaping rods very much can be made thin or flat, the production dor nice hte offers nothing Difficulty. If from the battery manufacturers a certain web width between the cables of e.g. 1, 6 or the like are required, are expediently multi-needle sewing points or the seams in double needles. to be set for each sewing point, or sew the seams in zigzag. The subsequent opening of the tubes on their The final cross-section happens because # the sewn together in strips Fabric webs are drawn onto the thicker part of the rods. The resulting Frictional forces, which are insignificant per se, are sufficient in the normal course of the procedure from, UN to laiton the stable in its direction when arranged horizontally, so that There are no special requirements for the stiffness of the bars. Essential is because # the opening process runs continuously and thus the whole creation process can be carried out continuously.

The invention is explained in more detail below with reference to drawings.

It zest: Fi, 1 oino scheaatisehe side view of a device for Manufacture of tubes for tube electrodes and Fig. 2 is a perspective Partial view of the finishedon tubes.

In the device shown in Fig. 1, a supply roller blind 1, via a guide roller 3, an upper sheet 2 made of a suitable material withdrawn and in a course parallel to a number of horizontal bars 7a brought.

In the same way, a lower supply roll 4 runs from a lower supply roll 4 Flat formation 5 approaches the rods 7a via a guide roller 6. The number of Rods 7a corresponds to the number of pockets that were later shaped into tubes. The bars 7a are much flatter and narrower than the cross-section of the pockets mentioned, whereby each of the rods 7a lies approximately in the middle of the pocket.

The pockets are produced in that the flat structures 2 and 5 are guided past a sewing device 9. The sewing device has so many Needles lo on, as pockets forming longitudinal seams are to be made. Possibly. With the help of double needles, two sutures are made between adjacent tubes made if a bridge of certain Breito is desired between the tubes. It is also possible to produce webs of a certain width by making TonZick-Za.sk seams.

The stables 7a are fixed to the machine at the end boi 8 at drawing linos held. They thicken at the entrance to form one made up of nozzles 11 and 12 Spray device in section 7b on the inner cross-section of the desired tube.

With the help of the nozzles 11 and 12, a suitable, required Stiffening of the tube-producing liquid is sprayed on. In the subsequent The drying chamber 13 is stiffened under suitable temperature conditions the tube, which now has its final shape.

The forward movement of the flat structures combined to form tubes takes place in the illustrated embodiment with the help of arranged on both sides, at a speed corresponding to the desired feed speed driven rollers 14, 15, which correspond to the circumference of the outer shape of the tube trained and if necessary. are provided with a friction-increasing coating. The thicker ones Sections 7b of the externally smooth, possibly made of metal. hollow and heated rods are extended beyond the belts 14 and 15. the Heating can be done by hot air introduced into the bars or by inside the bars arranged heating elements take place. In order for the bars to maintain their fate, they are by rollers 3a and 6a resting on the outside of the fabric webs supported.

The product consisting of adjacent tubes becomes separated into pieces 17 of the desired length with the aid of a cutting device 16.

The device described can be used in a wide variety of ways respective conditions or processed materials are adapted. Using of sheet-like structures made of weldable material can be used instead of sewn seams weld seams can also be produced. It is also-possible to use the rods and thus the Direction of transport of the flat structure inclined or vertical during the tube formation to arrange.

Instead of the cutting device shown as a knife 16 can also cutting off the group-wise connected tubes with the help of a circumferential circular saw blade.

When the finished tubes are in the width direction for a tube group Exceed the required width and the arrangement is also separated in the longitudinal direction must be, can be on both sides of the separation point by adapting the Sewing device 9 a double nalit can be established.

In Fig. 2, the half of the upper and the lower are each Fabric web 2 or 3 manufactured tubular lines and in the longitudinal direction over the between The Yorbinding bridges located on the tubes run through double at Bodarf Executed seams 10a shown.

Claims (5)

Claims: 1. A method for producing, in particular in groups connected tubes for tube electrodes in electrical accumulators, at dera oin plastic fabric on rods formed into tubes and in this shape it is stiffened that two are continuous Zugoführo, overlying flat structures (2, 5 in the longitudinal direction along one another parallel lines (10a) separated by distances from one another Join seams and widen the pockets formed in this way into tubes be, after which the Fläohongebilde stiffened and in the length of the desired tube appropriate sections are separated. 2. Apparatus for performing the method according to claim 1, d a d u r c h e k o n n z e i c h n e t that between the two supply rolls (1, 4) combined planar structures (2, 5) one of the number in the workpiece to be produced, mutually parallel tubes corresponding number of rods (7a, 7b), each rod of which consists of a thinner section (7a) and an adjoining thicker round section (7b), which latter the inner shape of the tube in question is determined, with the thin sections (7a) the rods a sewing device (9, 10) is arranged, which the fabric webs (2, 5) according to the later tube thickness in the longitudinal direction in strips with each other connects and wherein the thicker sections (7b) of the rods in a fixing device (11, 12, 13) lie for the flat structures or form part of them. 3. Apparatus according to claim 2, d a d u r c li g o k e n nz e i c li n e t that the rods (7a, 7b) in front of the point at which the flat structures (2, 5) converge, attached at the ends of their thinner sections and attached by spacings in the longitudinal direction separated from each other STollon guided by rollers (3a, 6a) and are supported, which also serve to guide the surface structure. 4. according to claims 2 and 3, d a d u r c h g o k e n n'z e i c h n e t that needle belts or for the transport of the tube-forming flat structures rollers or friction rollers are provided behind the fixing device. 5. Device according to claims 2 and 4, d a d u r c li g e k e n n z e i cli n e t, da # the fixation device made of spray nozzles, the one the Plastic components of the surface structure come off the dissolving liquid, and one there is a subsequent drying section. 6, device according to claims 1-5, d u r c h g e k e n It is noted that the rods (7a, 7b) are hollow and heated from the inside are. L e r s e i t e