Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
  • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
  • B21D31/046—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal making use of rotating cutters
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/18—Expanded metal making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/18—Expanded metal making
  • Y10T29/185—Expanded metal making by use of reciprocating perforator

Definitions

• the invention relates to a device for the production of planar stretched material, consisting of a cutting and stretching device and a retractor, the starting material is a film web, which led between superimposed, made of individual upper smooth and lower by alternate recesses in the cutting area forming the cutting length cutting blade created cutting rollers are, wherein the stretching device via partially driven pulleys guided toothed belt pairs or the like. Funding has, which holds the film web at the edges and provides the propulsion.
• US Pat. No. 4,486,927 discloses a device for the production of expanded material, from which cutting rollers are used to achieve the perforation.
• a stretching device presses with a number of stretch wheels, the film web gradually down, so that a stretch band in V-shape is formed. Again, it is true that a planar material band can not be produced.
• EP 0669 176 a method and apparatus for producing dimensionally stable, spherical bodies has been proposed in which also a stretching device is provided to form a film web to a stretch band.
• a stretching device is provided to form a film web to a stretch band.
• a corresponding upper and lower timing belt pair is used, which holds and transports the film web at the edges, wherein between the belt pairs an upwardly directed bracket is provided, which allows the stretching of the film web.
• a Stretch iron has the disadvantage of producing dust particles by abrasion, it has gone over to use a movable role instead of the drawbar.
• the invention was based on the object to provide a device for the production of planar stretched material, which includes a stretching device, which gives the stretch ribbon over the entire width of a uniform structure.
• the aim is achieved in that the stretching device on both sides of the film web has a respective pair of toothed belts, the film web from the horizontal plane, via articulated, optionally rigid trained, arranged in the inner region of the timing belt shoes, with a side edge vertically upwards while the other side edge of the film web in the same way vertically downwards, ie forming a scissor movement, is guided and an extension of the film web is formed on the resulting diagonal.
• the sliding blocks have joints and these are adjustable in height. This allows you to set different stretch widths.
• the upper slide shoe is designed to be displaceable perpendicular to the toothed belt inner side. It is possible on the Material thickness of the stretch band to take into account.
• the sliding surfaces of the upper sliding shoe and the lower sliding shoe are formed at equidistant spacing as straight planes, or optionally provided with a radius surfaces which form a gradual transition in the extended position to the film web. This is important so that the timing belt hold the edge of the film web over the entire length.
• FIG. 1 in side view with stretching device
• FIG. 2 front view of the stretching device (section A-A)
• FIG. 3 variant of the embodiment of the stretching device
• FIG. 4 design of the toothed belt (detail B)
• FIG. 1 device in side view with stretching device
• FIG. 2 front view of the stretching device
• FIG. 3 variant of the embodiment of the stretching device
• FIG. 4 design of the toothed belt (detail B)
• Fig. 1 shows schematically a device for the production of stretch bands, in which the stretching device 10 according to the invention is arranged.
• the stretching device 10 From a storage drum 2, on which a film strip 1 is wound up as starting material, this is led to the cutting device 3.
• This cutting device 3 consists essentially of a superimposed upper cutting roller 4 and a lower cutting roller 5.
• the upper cutting roller 4 is formed as a smooth roller with cutting means, while the lower roller 5 alternately recesses in the cutting area, forming the cut length has.
• a tensioning device 6 This has an initially arranged deflection roller 7, wherein the film web 1 brought down to a tensioning roller 6 and then brought up again by deflection roller 8 in a horizontal position, to then be guided into the stretching device 10.
• the stretching device 10 includes on each side substantially a toothed belt pair 18,19, which is guided over a series of deflection rollers 11 to 17 and positioned at the edges of the film web 1.
• the upper toothed belt 18 is guided around the Umlenkrol / s 11,13 and 15, wherein outwardly the teeth of the Have toothed belt side 20.
• the toothed belt side 21 is smooth and lies on the inside.
• the lower toothed belt 19 is guided over the deflection roller 12,14 and 16,17. Again, the timing belt 19 is toothed to the outside, while the inside is again smooth.
• the toothed belt pairs 18,19 are between the guide rollers 11,12 and 13,14 in engagement and hold the film web 1 at the edges.
• toothed chains or the like can be used in place of the toothed belt.
• the upper shoe 22 has a guide that leads with a straight plane, optionally a radius R, the edge of the film web 1 of the guide roller 11 to the guide roller 13 ,
• the guide is also present in the lower sliding shoe 23, such that the two toothed belts 18, 19 are in engagement and the edge of the film web 1 lies therebetween.
• One of the pulleys, e.g. 11, is formed as a drive roller.
• the upper slide shoe 22 still has an adjusting device 24 in order to align it perpendicular to the inside of the toothed belt 18 and to be able to vary the contact pressure.
• the lower toothed belt 19 now runs over the already mentioned deflection roller 12, which may be formed as a drive roller and is guided over the deflection rollers 14,16,17. But it is also possible to transfer the drive via a pinion 33 on the timing belt side 20, because you only need a drive train.
• the lower sliding shoe 23 is now fixed rigidly to the machine frame.
• a toothed belt pair 18,19 is arranged in the same way, which is now at the edge of the other side of the Film web 1 engages. The difference, however, is that the edge of the film web 1 is guided downwards.
• the arrangement of the pulleys is the same, but upside down.
• the sliding blocks 22,23 At the entrance of the stretching device 10, the film web 1 is flat, is gripped by toothed belts 18,19 and guided with one side by the sliding blocks 22,23 and the arrangement of the guide rollers 13,14 upwards.
• On the opposite side of the belt pair 18,19 is guided by the position of the pulleys 31,32 down.
• section A - A of FIG. 1 the front view of the stretching device 10 is shown in FIG. In the middle, the film web 1, as it is introduced into the plug-in device 10. Due to the arrangement of the toothed belt pairs 18,19 and the deflection rollers and the sliding blocks 22,23 thus required, the edge of the film web 1 is pushed up and brought in the same way on the other side of the edge down. As a result of this change in width, the slits introduced in the film web 1 are widened.
• this stretch is 5 times, preferably 3 times, the original width. This depends primarily on the material properties, but also on the selected cutting length of the film web 1 from.
• the guide rollers 13,14,17 and the sliding blocks 22,23 are arranged for the upwardly led edge of the film web 1, while for the guided down edge the pulleys 31, 32 are used.
• Fig. 3 shows a variant of the stretching device 10, the sliding blocks 30 are designed to be movable by a hinge 29 according to arrows. These can be adapted well to the guidance of the timing belt pairs 18,19.
• the same reference numerals for the pulleys apply as already mentioned in Fig. 1.
• the pulleys 11,13,15 responsible, while the pulleys for the lower toothed belt 19, the reference numerals 12,14,16 and 17 seen in the direction of movement, have.
• the other side which then run over the deflection rollers 31, 32 for the edge guided downwards.
• the other side of the stretching device is indicated by dashed lines.
• FIG. 4 shows the construction and position of the toothed belts 18, 19, which are arranged at the location designated B in FIG.
• the teeth are in mutual engagement and in between is the film web 1, which now assumes the tooth shape.
• the outer sides of the toothed belts 18, 19 are provided with a smooth toothed belt side 21.
• this stretching device 10 is that it is simple in construction, variably adaptable and moreover results in a uniform structure over the entire width of the stretched film web 1a. But this is the prerequisite for the versatile use of such stretch bands.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Lubricants (AREA)
• Treatment Of Fiber Materials (AREA)
• Nonwoven Fabrics (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (2)

Family

ID=33569150

Family Applications (1)

Country Status (8)

Families Citing this family (4)

Family Cites Families (10)

• 2003
  • 2003-07-10 AU AU2003237564A patent/AU2003237564A1/en not_active Abandoned
  • 2003-07-10 DE DE50308200T patent/DE50308200D1/de not_active Expired - Lifetime
  • 2003-07-10 ES ES03735146T patent/ES2291647T3/es not_active Expired - Lifetime
  • 2003-07-10 US US10/563,837 patent/US20070050960A1/en not_active Abandoned
  • 2003-07-10 SI SI200331007T patent/SI1644141T1/sl unknown
  • 2003-07-10 WO PCT/AT2003/000194 patent/WO2005005073A1/fr active IP Right Grant
  • 2003-07-10 AT AT03735146T patent/ATE372839T1/de not_active IP Right Cessation
  • 2003-07-10 EP EP03735146A patent/EP1644141B1/fr not_active Expired - Lifetime

Non-Patent Citations (1)

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