DE7527416U - DEVICE FOR MANUFACTURING CYLINDERS OR ROLLERS WITH INTERNAL BORE MADE OF PLASTIC RESIN FOAM, IN PARTICULAR PORE-OPEN ELASTIC PLASTIC FOAM SUCH AS POLYURETHANE OR DGL. - Google Patents

Description

BRQSE ^DK "BROSE D-8023 Munich-Pullach, Vienna Ötr # let. (i) 8Ö) / 93 SO 71; Telex 5213147 bros d; Cables: "Patentibus" Munich Your reference: Day _{:? 0} Your ref .: Date: ^iiu ·. P.

Kt / Sch

File number: G 75 27 416.7 Applicant: Wolfgang Voulade

Device for the production of cylinders or rollers with inner bores made of synthetic resin foam, in particular pore-open elastic plastic foam such as polyurethane or the like "Ό

foam rollers with inner bores or cylinders made of plastics, such as pore open polyurethane foams, are available in different Technical areas brought to the application, for example as transport or applicator rollers Copiers or as a color applicator roll for hand rollers for applying paints.

The invention has set itself the task of producing a particularly simple and powerful device of such foam rollers or foam cylinders to create through which at the same time

the foam body

7527411

pern special properties are granted, which have not yet been granted were achievable and of great importance for many purposes are.

For example, when such a foam rollers are used as ink application roller for solvent-based paints, the foam swells under the influence of the solvent in use, and there is the danger that the roll is easily dissolved its support of i. Similar phenomena occur when

such foam rollers for other application purposes use find .. which solvents contain that act on the foam in question.

To solve the problem on which it is based, the invention consists primarily in a Vorrich- ¹ ZtSr production of cylinders or rollers with an inner bore made of synthetic resin foam, in particular pore-open elastic synthetic foam, such as polyurethane (for example polyurethane foam from Bayer-Werke Quality Esther), according to According to the invention, the inner bore of the roller or cylinder is produced by burning out or melting out, thereby forming a melt skin on the inner wall.

In detail, according to the invention, the burning out or melting out can be carried out by means of electrical means.

In many cases it can be advantageous that the pore foam smoothed after the melting or firing process will.

Furthermore, it is in many ways advantageous to develop the invention even further in that the melting and smoothing are carried out using rotary machining. Here , the

carry out finding in a particularly advantageous way,

fczw.

by producing the Turkish cylinder shape at the same time as the burn-out / melting-out of the inner bore and its smoothing will. This can be done, for example, by drilling or cutting with appropriately designed tools.

The subject of the invention iat in particular the formation of a Device for carrying out the basic work cycle. Such a device is primarily through a Firing or melting device that can be inserted into the foam material characterized, wherein a preferred AusfUhrungsform can be created that the burning or melting device on its free end is provided with an electrical heating or fuel or melting element.

A smoothing device is preferably provided in connection with the burning or melting device, which can be created, for example, by placing the burning or Schroelz element at the end of the smoothing of the inner bore formed effecting tubular body is arranged. This tubular body is preferably used at the same time as a feed for the heating current, if the fuel or fusible element is operated electrically, while the other supply line is expediently within the Tubular body is arranged.

In those cases where the invention is carried out in such a way that If the outer molded body is also produced at the same time as the inner bore, the melting or burning device is expedient designed to be rotatable, although a rotatable design can also be recommended if only the inner bore is produced.

If at the same time the external shape of the cylinder or the ' 'Roll is to take place, so it is advantageous »dl · Brenn- or

7527416 B5.IML76

Melting device within one, the external shaping of the cylinder or to arrange roller body made of foam forming hollow drill. The wall of the hollow drill is useful here provided with gas exhaust openings so that the vapors formed when the material is melted can be discharged.

In general, according to the basic concept of the invention, the subject matter of the invention also includes a roller with an inner bore or cylinder made of synthetic resin foam, in particular pore-open elastic synthetic foam, such as polyurethane foams or the like, which ir. their physical training has the peculiarity that the wall of the inner bore is designed as a melt skin. The enamel skin can according to the above proposals of the invention or in any other way by a Firing or melting process can be produced. In all cases it is expedient for the wall of the inner bore to be melted and is smoothed.

Further advantageous details of the invention can be seen from the drawing, in which the invention is exemplified is explained on a tool for carrying out the proposals on which it is based and in the furthermore also before the synthetic foam roller according to the invention is illustrated. It shows:

FIG. 1 shows a production tool according to the invention in a side view;

Figure 2 in longitudinal section;

3 shows a cross section along the line II-II and ¹ Figure 4 is a rolling · produced according to the invention.

Inside a steel drill sleeve 1 in a conical shape with a sharpened cutting edge, a fuel or fusible element 2 is arranged, which has an electric heating cartridge 3 or similar heating or fusible element at its free end in the region of the cutting edge of the drill sleeve 1. With a practical Implementation of the invention, it has been found, for example, that it is sufficient and expedient to use the heating cartridge 3 in this way to be interpreted that it develops a temperature of 350 ° at a power of 40 amperes and 0.4 volts. This goes without saying only one example of information and the design of the heating cartridge 3 depends on the synthetic foam to be processed and the Dimensions of the inner bore to be produced.

The firing or melting device consists in detail of a copper tube also provided with the reference number 2, in its interior the one supply line 4 for the heating cartridge 3 in the form of a metal, for example copper wire, is arranged and that is insulated from the wall of the copper pipe 2. The copper pipe 2 is used as the other supply line to the heating cartridge 3 educated. The power supply to the heating cartridge 3 or to the conductors 4 takes place via two slip rings 5 and 6, which on an insulating bushing 7 are arranged, the slip ring 6 with a contact 8 for the power supply, to the jacket of the copper pipe 2 and the slip ring 5 with a contact 9 for the Feeding the current to the inner line 4 within the copper pipe 2 is electrically connected.

The socket 7 is arranged on a Bohrkopfkurper 10, in whose inner bore a guide socket 11 engages for guiding the copper tube 2 or the entire fuel rod. For purposes of ease of disassembly and assembly, the guide bush is appropriate divided in the longitudinal direction 11 \, un> their insertion into ^the; Inner drilling of the drill head body 10 to facilitate.

7527416 08/05 76

On the front end of the drill head body 10 is also attached to the rear end of the drill bushing 1 and by a
Screw 12 or otherwise secured. At 13 there are an or
denotes several gas vent openings in the drill sleeve 1, through which the vapors produced when the foam material is melted escape.

The entire device shown is designed as a rotating tool and, for connection to a corresponding drill drive, the drill head body 10 can be connected by screws 14 to the flange 15 of a MK 1 holding mandrel 16, on which a holding tube 19 is attached by means of a knurled nut 17 with adjusting screw 18 is arranged adjustable for connection to the drill drive. 20 with the usual guide nose is designated for engaging into a corresponding bore of the drill drive formed inside.

The tool shown, designed as a foam burner, can, for example, be made in triplicate in one
Find multiple drill head arrangement, which is located on a column drilling machine ^ are driven. The stroke is controlled in the usual way using a pneumatic drive. The foam to be processed lies horizontally on a pneumatically controlled metal slide and is transported fully automatically after drilling. When the drill bit is immersed, the outer wall of the cylinder or roller is cut in one operation with the aid of the drill sleeve and the middle hole is melted out at the same time. The fusion ensures that the inner skin, which has now become stable , in the inner bore counteracts the swelling of the foam material in connection with solvent-based materials and is reduced to almost zero. Such an enamel skin has also proven useful for other types of stress.

7527416 08/05 76

The assembly of the foam roller for your application purpose, for example as a paint application roller, can thus be ended by pressing in a corresponding guide bush. the Previous adhesive processes can be completely omitted and, moreover, are for various types of plastic, such as polyethylene or the like, no adhesive connections at all possible, since the fabric itself is resistant to chemicals.

The power supply to the drill bit is carried out by means of a transformer via the slip rings 5 and 6 shown, namely via the usual carbon brush grinding contacts. The combustion gases are transported outside through an air intake. In Figure k , a foam roller according to the invention is illustrated, for example, the roller 21 is provided in its inner bore 22 with a shrink skin 23, which, as mentioned, is of essential importance and advantage for the most varied of loads and uses of such show material rollers or cylinders.

All technical details shown in the drawing and explained in the description are necessary for the invention of Importance.

7527416 08/05 76

Claims (1)

DBR / kt I.'- 3023 Pullach, February 18, 1976 File number: G 75 27 Vi-: .7
Applicant: V.'olf ~ ang V lulade NEIL · PROTECTIVE STATEMENTS 1. Apparatus for producing cylinders or rollers with Innenbohrunfci from synthetic hair foam, in particular porenoffe- ι nem elastic! Plastic foam such as polyurethane or the like., Characterized in that an as in the foam insert! bar: B ^ enn- odor S ~ hneIzvorrichtung (2) formed tube ^: körn-ir (2) is provided, which is equipped with an electrical heating \ or '. Fuel or fusible element (3) is provided. ^. Device according to claim 1, characterized in that the Heating or Orenn- or Scli'nelzelement (3) at the free end of the Rohrköroers (?) is arranged. 3. Apparatus according to claim 1 or 2, characterized in that the firing or melting device (2, 3) in connection with rios fuel or melting element (3) nit see the melted foam ^ lätt ^ nden surface (?) \ ^R is. / 4. Device still to claim 3, characterized in that the di ^ö { 'Inttende Inneiibohrung effecting surface formed rie ζγΙϊηΓίτ-ίεοαε Aussenfläc.he the tubular body (2). Γ ·. Device according to one or more of the preceding claims: cpr> i (-. he, characterized, ^ indicates that the tubular body (2) equals, ZK ' itit ^a l ^s Zu ^r ührun <·; for the heating current to the heating element (3) is formed from i. 6. Device according to one or more of the preceding claims, characterized in that the other feed line (4) for the heating current is arranged within the tubular body (?). : 7. Apparatus according to claim 6, characterized in that the supply line (4) is more insulated than against the tubular body (2) Conductor wire is formed. 8. Device according to one of the preceding claims, characterized in that for power supply two slip rings (5 and 6) are provided, v / obei the slip ring (6) with a contact j (8) for the power supply s & around the tubular body (2) and the grinding J ring (5) with a contact for supplying the current to the j Feed line (M connected within the tubular body (2) is. 9 · Device according to a cd ^ r several of the preceding claims characterized in that the fuel oil melting device (2) is rotatably formed. 10. Device according to one of the preceding addresses, dp durch gekennzeiclinet that the burning or melting device (2) within one of the outer circumference of the cylinder or velvet body (? 1) made of foam forming hollow drill (1) is arranged. 11. Vorrj ch-M: ng nacr. Claim 10, characterized in that de? - HohlV-j-irer (1) as a conical pipe socket with sharpened Jrhr: eidkar. ⁴ ρ trained i «t. 12. Device according to one of the preceding claims, characterized in that> je! Icrm? .R> ichnet, r.ass ( ¹ Ie wall of the hollow drill (1) is provided with with; öfTnun / jon (13). 13. Device lifch einin d <= r claims 10 - 12, characterized gekennzeichnot, iafi d ·: ·? ' Hollow drill (1) and the torch and melting 7527416 85.8476 Device (2) with the front end of a drill head body (10) are connected. 1k. Device according to claim 13 »characterized in that a guide bushing (11) for the burning and melting device (?) Is arranged in an inner bore of the drill head body (10). 15. The device according to claim 14, characterized in that? « the guide bushing (11) is designed in parts. 16. Device according to one of claims 13-15, characterized in that the drill head body (10) has an insulating bushing
(7) with the slip rings (5 and 6). 7527411 I5.W7S