DE856524C - Process for the production of endless belts from polycondensation products - Google Patents

Process for the production of endless belts from polycondensation products

Info

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
Application number
DED5895D
Other languages
German (de)
Inventor
Werner Hawerkamp
Albert Dr Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Priority to DED5895D priority Critical patent/DE856524C/en
Application granted granted Critical
Publication of DE856524C publication Critical patent/DE856524C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16GBELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00Driving-belts
    • F16G1/14Driving-belts made of plastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D29/00Producing 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)

PATENTANSPRUCH: I. Verfahren zur Herstellung endloser Riemen aus Polykondensationsprodulkten, wie z. B. PATENT CLAIM: I. Process for producing endless belts from Polycondensation products, such as. B. Polyamiden oder Polyurethanen, mit oder ohne Weichmacher in Plattenform, dadurch gekennzeichnet, daß aus diesen Platten 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 go" so gedreht werden, daß die bisherige Ringfläche zur Mantelfläche eines Zylinders wird. Polyamides or polyurethanes, with or without plasticizers in sheet form, characterized in that from these plates rings, the circumferential length in one has a certain relationship to the desired endless belt length, punched out, then lengthened to a desired dimension and at the same time in the plane around go "are rotated so that the previous ring surface becomes the lateral surface of a cylinder will. 2. Vorrichtung zur Durchführung des Verfahrens, gekennzeichnet durch Anordnung von zwei gegeneinander verschiebbaren, drehbar gelagerten Rollen oder Walzen, zwischen welchen der Ring gereckt wird. 2. Device for performing the method, characterized by Arrangement of two mutually displaceable, rotatably mounted rollers or Rollers between which the ring is stretched.
DED5895D 1944-03-18 1944-03-18 Process for the production of endless belts from polycondensation products Expired DE856524C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
DE856524C (en) Process for the production of endless belts from polycondensation products
DE628969C (en) Machine for the production of panels of any cross-section from synthetic resin and synthetic resin-like compounds
DE814088C (en) Process and device for eliminating local differences in thickness in the production of thin, strip-shaped material
DE505785C (en) Machine for the production of hollow bodies, e.g. Sugar pipes
DE1704999A1 (en) Device for the production of conveyor belts or the like.
DE440837C (en) Process for leveling and smoothing sheet metal by stretching
DE332424C (en) Device for twisting pulp strips together
DE862669C (en) Method and device for smoothing, cooling and calibrating plastic belts
DE470051C (en) Device for cutting out dough and similar masses, in which a rotating cutting device with cutting edges arranged on its circumference and a conveyor device are provided
DE582981C (en) Vulcanizing machine
DE805613C (en) Roller press
DE900926C (en) Process and device for rolling gears, corrugations or notches on cylindrical workpieces
DE833018C (en) Method for producing thin metal strips, in particular steel strips, by grinding
AT93685B (en) Device for processing of flat roll form with gaps between the rolls of film.
DE510835C (en) Wood bending machine
DE695091C (en) Conveyor device for bast fiber stalks
DE338355C (en) Bearing block for paper strainer machines
DE633550C (en) Process for bending strip-shaped material into punching knives
DE514725C (en) Vorrich device for the production of angular rods from round rods of artificial horn, artificial leg and. like
DE579560C (en) Device for shredding pieces of wood, wood waste u. like
DE410892C (en) Device for rolling and simultaneously advancing a set of sweets
AT144158B (en) Device for the production of seamless containers from leather or similar material.
AT19520B (en) Cardboard machine with several screen cylinders.
AT80244B (en) Method and device for pressing crankshaftsMethod and device for pressing crankshafts. ll.
DE423954C (en) Device for stretching foils on the forme cylinders of rotary printers