DE856524C - Process for the production of endless belts from polycondensation products - Google Patents
Process for the production of endless belts from polycondensation productsInfo
- Publication number
- DE856524C DE856524C DED5895D DED0005895D DE856524C DE 856524 C DE856524 C DE 856524C DE D5895 D DED5895 D DE D5895D DE D0005895 D DED0005895 D DE D0005895D DE 856524 C DE856524 C DE 856524C
- Authority
- DE
- Germany
- Prior art keywords
- polycondensation products
- endless belts
- rollers
- ring
- production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/14—Driving-belts made of plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von endlosen Riemen aus Polykondensationsprodukten, wie z. B. Polyamiden oder Polyurethanen, mit oder ohne Weichmacher aus in Plattenform vorliegenden Stoffen. The invention relates to a method for producing endless belts made of polycondensation products such as B. polyamides or polyurethanes, with or without plasticizers made from materials in sheet form.
Für bestimmte Riemenantriebe sind vollkommen stoßfrei laufende Riemen erforderlich, d. h. also praktisch endlose Riemen. Derartige Riemen dürfen auch nicht die kleinste Unebenheit aufweisen, weil sich diese ungünstig auf den Betrieb der betreffenden Anlage auswirkt. Man hat diese Aufgabe bisher dadurch zu lösen versucht, daß man geflochtene Textilriemen verwendete. Diese Textilriemen sind aber wegen Beschaffungsschwierigkeiten zur Zeit nicht mehr einsetzbar. Andere bisher für Riemen benutzte Werkstoffe eignen sich aus Gründen der noch in ihnen vorhandenen Dehnbarkeit nicht für den Einsatz an solchen Stellen, bei denen Längungen im Betrieb nicht entstehen dürfen. Für derartige Zwecke haben sich nun Flachriemen aus Polykondensationsprodukten,.wie insbesondere weichgemachten Polyamiden, in bezug auf ihre mechanischen Eigenschaften hervorragend bewährt. Die gewünschte Stoßfreiheit durch Verklebungen oder Verschweißungen konnte bisher hier nicht erzielt werden. For certain belt drives, belts run completely smoothly required, d. H. so practically endless straps. Such straps are also allowed not have the slightest bump, because this adversely affects the operation affects the plant concerned. So far, this has been the way to solve this task tried to use braided textile straps. These textile straps are, however No longer usable due to procurement difficulties. Others so far Materials used for belts are suitable for reasons that are still present in them Extensibility not for use in places where elongation in operation may not arise. For such purposes, flat belts made of polycondensation products, like especially plasticized polyamides with regard to their mechanical properties well proven. The desired freedom from bumps through gluing or welding could not be achieved here so far.
Diese Aufgabe wird nunmehr gemäß der Erfindung dadurch gelöst, daß aus dem plattenförmigen Werkstoff Ringe, deren Umfangslänge in einem bestimmten Verhältnis zu der gewünschten endlosen Riemenlänge steht, ausgestanzt, sodann auf ein gewünschtes Maß gelängt und hierbei gleichzeitig in der Ebene um go0 so gedreht werden, daß die bisherige Ringfläche zur Mantelfläche eines Zylinders wird. Auf diese Weise wird ein endloser, völlig stoßfreier Antriebsriemen erzeugt, der durch das gewählte Verhältnis zwischen Riemenumfangslänge und fertiger Riemenlänge so weit ausgereckt ist, daß Längungen im Betrieb nicht mehr stattfinden. This object is now achieved according to the invention in that from the plate-shaped material rings, their circumferential length in a certain Relation to the desired endless belt length is, punched out, then on lengthened to a desired dimension and at the same time rotated in the plane around go0 that the previous ring surface becomes the lateral surface of a cylinder. on in this way, an endless, completely shock-free drive belt is created, which runs through the selected ratio between belt circumference length and finished belt length as follows it is far stretched that elongations no longer take place during operation.
Eine geeignete Vorrichtung zur Durchführung des Verfahrens besteht gemäß der Erfindung aus zwei gegeneinander verschiebbaren, drehbar gelagerten Rollen oder Walzen, um welche der ausgestanzte Ring gelegt und dann durch Vergrößerung der Entfernung der Rollen oder Walzen in der gewünschten Weise gereckt wird. Hierbei wird die bisherige Ringfläche durch Drehung um go0 zur Oberfläche des Riemens, während die Stärke der Platte, aus der der Ring ausgestanzt wird, immer maßgeblich ist für die Stärke des fertigen Riemens unter Berücksichtigung der durch die Reckung entstehenden Verminderung. There is a suitable device for carrying out the method according to the invention of two mutually displaceable, rotatably mounted rollers or rollers, around which the punched ring is placed and then enlarged the removal of the rolls or rollers is stretched in the desired manner. Here the previous ring surface becomes the surface of the belt by turning go0, while the thickness of the plate from which the ring is punched is always decisive for the strength of the finished belt, taking into account that resulting from the stretching Reduction.
In der Zeichnung ist die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens in einem Ausführungsbeispiel veranschaulicht, und zwar zeigt Abb. 1 eine Vorderansicht des ausgestanzten Ringes, Abb. 2 eine Seitenansicht des Ringes, Abb. 3 eine schematische Ansicht der Reckvorrichtung. In the drawing, the device for performing the inventive Method illustrated in one embodiment, namely Fig. 1 shows a Front view of the punched ring, Fig. 2 a side view of the ring, Fig. 3 is a schematic view of the stretching device.
Diese besteht aus den Walzen 2 und 3, über welche der Ring I gelegt und dann durch Vergrößerung des Abstandes zwischen den beiden Walzen so lange gelängt wird, bis der Ring 5 entstanden ist. Die Verschiebung der Walzen wird z. B. durch eine Schrautbspindel 4 bewerkstelligt. Die Verschiebung der einen Walze bzw. die Längung des Riemens wird so weit getrieben, bis derselbe ausgereckt und eine weitere Längung bei normaler Beanspruchung nicht mehr möglich ist. This consists of rollers 2 and 3, over which the ring I is placed and then elongated by increasing the distance between the two rollers until the ring 5 is formed. The displacement of the rollers is z. B. by a screwing spindle 4 accomplished. The displacement of a roller or the Lengthening of the belt is carried out until the same is stretched out and another Elongation is no longer possible under normal stress.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED5895D DE856524C (en) | 1944-03-18 | 1944-03-18 | Process for the production of endless belts from polycondensation products |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED5895D DE856524C (en) | 1944-03-18 | 1944-03-18 | Process for the production of endless belts from polycondensation products |
Publications (1)
Publication Number | Publication Date |
---|---|
DE856524C true DE856524C (en) | 1952-11-24 |
Family
ID=7031609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED5895D Expired DE856524C (en) | 1944-03-18 | 1944-03-18 | Process for the production of endless belts from polycondensation products |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE856524C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1046473B (en) * | 1957-01-10 | 1958-12-11 | Preckel & Waeltermann G M B H | Filing thread for upholstery |
DE1051629B (en) * | 1957-05-03 | 1959-02-26 | Preckel & Waeltermann G M B H | Process for the production of ring-shaped filing threads for upholstery |
DE972176C (en) * | 1952-05-20 | 1959-06-04 | Continental Gummi Werke Ag | Process for the production of drive belts |
DE975649C (en) * | 1952-03-10 | 1962-05-03 | Continental Gummi Werke Ag | Method and mold for producing a flexible, toothed belt made of plastic or the like. |
DE1184067B (en) * | 1960-10-04 | 1964-12-23 | Roehm & Haas Gmbh | Production of pliers-like devices from thermoplastic material |
-
1944
- 1944-03-18 DE DED5895D patent/DE856524C/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE975649C (en) * | 1952-03-10 | 1962-05-03 | Continental Gummi Werke Ag | Method and mold for producing a flexible, toothed belt made of plastic or the like. |
DE972176C (en) * | 1952-05-20 | 1959-06-04 | Continental Gummi Werke Ag | Process for the production of drive belts |
DE1046473B (en) * | 1957-01-10 | 1958-12-11 | Preckel & Waeltermann G M B H | Filing thread for upholstery |
DE1051629B (en) * | 1957-05-03 | 1959-02-26 | Preckel & Waeltermann G M B H | Process for the production of ring-shaped filing threads for upholstery |
DE1184067B (en) * | 1960-10-04 | 1964-12-23 | Roehm & Haas Gmbh | Production of pliers-like devices from thermoplastic material |
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