US3665846A - Protective shield for use at the bite of rollers for paper and textile calenders - Google Patents

Protective shield for use at the bite of rollers for paper and textile calenders Download PDF

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Publication number
US3665846A
US3665846A US105218A US3665846DA US3665846A US 3665846 A US3665846 A US 3665846A US 105218 A US105218 A US 105218A US 3665846D A US3665846D A US 3665846DA US 3665846 A US3665846 A US 3665846A
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protective shield
plate
longitudinal
plate means
rollers
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US105218A
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Jurgen Schiunke
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    • 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
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P1/00—Safety devices independent of the control and operation of any machine
    • F16P1/005—Guards for rolls in calendering or other roll machines, e.g. nip guards, finger guards
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2193—Guard mechanisms

Definitions

  • ABSTRACT A protective shield for use at the bite of rollers of paper and textile calenders, which consists of a hollow longitudinal member of triangular cross section formed by angle-shaped plate means connected to each other, said hollow longitudinal member containing a filling of hard foam synthetic material.
  • the present invention relates to a protective shield at the bite of papers for paper or textile calenders and comprises a longitudinally extending box made up of angle profiles of thin metal sheet material.
  • Protective shields of this type are for safety reasons provided on all calenders having rotating rollers, and more specifically, are installed in front of the bites of the rollers.
  • Protective shields of this type are intended to prevent the operator from accidentally getting his hands into the gap between the rotating rollers.
  • known protective shields of the type involved comprise at least one angular metal profile which extends parallel to the roller axis in front of the roller gap and is laterally connected to the calender stand or to the housing which carries the bearings for the rollers.
  • the correspondingly long protective angles have to be reinforced by providing intermediate webs which are either welded 'on, screwed on, or riveted on.
  • the protective shield may, in a manner known per se, be made up of metal profiles so as to form a closed housing and may be welded, screwed, or riveted together so that a satisfactory stability of the protective shield will be obtained.
  • an object of the present invention to provide a protective shield which can also be made in great length so that it will have a good stability and it will be substantially free from oscillations.
  • FIG. 1 illustrates a cross section through a protective shield according to the invention.
  • FIG. 2 is a longitudinal view of the protective shield according to the invention.
  • the protective shield according to the present invention for use at the bite of rollers for paper and textile calenders is characterized by a box composed of angle profiles of thin sheet metal, which box is filled with hard foam synthetic material (Hart-schaumbuchofi).
  • the metal profiles which form the box may, in conformity with the preferred design of the protective shield according to the invention, be perforated in order to make them lighter.
  • the metal profiles which form a box and have been composed of sections by welding, riveting, or screwing, will impart upon the protective shield a sufficient stability even if the box is rather long.
  • the foaming of the interior of the box with synthetic materials dampens the tendency of the protective shield to oscillate or vibrate in view of the foreign excitement by the machine.
  • the protective shield 1 is composed of an outer angle profile 2 which is welded to an inner angle profile 3 at 4 and along the leg ends. In this way there will be obtained a box of triangular transverse section. This box may additionally be reinforced by the welding-in of intermediate webs 5 and 6.
  • the ends of the protective shield l have supports 7 welded thereto by means of which the protective shield l is mounted on the calender stand.
  • the angle profiles 2 and 3 and, if desired, the intermediate webs 5 and 6 may be punched through or perforated as indicated at 8.
  • the protective shield l with a triangular cross section
  • the intermediate webs 5 and 6 may also, in a different way than that depicted in the drawing, be arranged and assembled or, if desired, may be completely omitted.
  • any other connecting method for instance, riveting or screwing together of the elements may be selected.
  • material for the angle profiles 2 and 3, and intermediate webs 5 and 6, light or heavy metal may be employed in conformity with the specific requirements involved.
  • anystandard material of this type may be used.
  • ureaforrnaldehyde and polyvinyl formaldehyde foam plastics may be employed.
  • a protective shield for use at the bite of rollers of paper and textile calenders which includes: first plate means comprising at least two longitudinal plate sections forming an angle with each other, second plate means likewise comprising at least two longitudinal plate sections forming with each other an angle and having their free longitudinal marginal portions firmly connected to the free longitudinal marginal portions of the respective adjacent plate sections of said first plate means so as to confine therewith a longitudinal shield structure of triangular cross-section, and synthetic material of hard foam substance within said longitudinal structure.
  • a protective shield according to claim 1 which includes supporting means at both ends of said longitudinal structure of triangular cross-section for mounting said shield structure to a calender stand.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

A protective shield for use at the bite of rollers of paper and textile calenders, which consists of a hollow longitudinal member of triangular cross section formed by angle-shaped plate means connected to each other, said hollow longitudinal member containing a filling of hard foam synthetic material.

Description

[ 1 May 30, 1972 United States Patent Schlunke References Cited UNITED STATES PATENTS 54] PROTECTIVE SHIELD FOR USE AT THE BITE OF ROLLERS FOR PAPER AND TEXTILE CALENDERS wk U 1,925,364 9/1933 3,256,395 6/1966 Grau et al. 3,498,217 3/1970 [72] Inventor: Jurgen Schlunke, Krefeld, Germany [22] Filed: Jan. 11, 1971 Primary Examiner-Peter F eldman Attorney-Walter Becker [21] Appl. No.:
ABSTRACT A protective shield for use at the bite of rollers of paper and textile calenders, which consists of a hollow longitudinal member of triangular cross section formed by angle-shaped plate means connected to each other, said hollow longitudinal member containing a filling of hard foam synthetic material.
4 HM3 6 7 uls 8-Mb 2 6 0 1 3 m 3 4 l 7 0 m 0 1 "5 2, m 6 4 H 3% 0 "5/ 0 "W8 1 W0 m mu 7 n .l m 5 n 7 n l m 4' a7 1 mmm mw n w l d d MM IF .1] 8 55 [.l
6 Claims, 2 Drawing figures PROTECTIVE SHIELD FOR USE AT THE BITE OF ROLLERS FOR PAPER AND TEXTILE CALENDERS The present invention relates to a protective shield at the bite of papers for paper or textile calenders and comprises a longitudinally extending box made up of angle profiles of thin metal sheet material.
Protective shields of this type are for safety reasons provided on all calenders having rotating rollers, and more specifically, are installed in front of the bites of the rollers. Protective shields of this type are intended to prevent the operator from accidentally getting his hands into the gap between the rotating rollers. Heretofore known protective shields of the type involved comprise at least one angular metal profile which extends parallel to the roller axis in front of the roller gap and is laterally connected to the calender stand or to the housing which carries the bearings for the rollers. With large calenders having a roller width up to meters, the correspondingly long protective angles have to be reinforced by providing intermediate webs which are either welded 'on, screwed on, or riveted on. Moreover, the protective shield may, in a manner known per se, be made up of metal profiles so as to form a closed housing and may be welded, screwed, or riveted together so that a satisfactory stability of the protective shield will be obtained.
inasmuch as the metal profiles which form the protective shield will, in view of the great length of said shield, have relatively great wall thicknesses for reason of stability, the protective shield becomes relatively heavy. When employing light metal, only the requirement concerning a sufficient stability of the protective shield could be satisfactorily met. These protective shields, however, have the tendency, in view of foreign excitement by the machine, to produce relatively strong oscillations.
it is, therefore, an object of the present invention to provide a protective shield which can also be made in great length so that it will have a good stability and it will be substantially free from oscillations.
These objects and other objects and advantages of the invention will appear more clearly from the following specification, in connection with the accompanying drawing, in which:
FIG. 1 illustrates a cross section through a protective shield according to the invention.
FIG. 2 is a longitudinal view of the protective shield according to the invention.
The protective shield according to the present invention for use at the bite of rollers for paper and textile calenders is characterized by a box composed of angle profiles of thin sheet metal, which box is filled with hard foam synthetic material (Hart-schaumkunstofi).
The metal profiles which form the box may, in conformity with the preferred design of the protective shield according to the invention, be perforated in order to make them lighter. The metal profiles which form a box and have been composed of sections by welding, riveting, or screwing, will impart upon the protective shield a sufficient stability even if the box is rather long. The foaming of the interior of the box with synthetic materials dampens the tendency of the protective shield to oscillate or vibrate in view of the foreign excitement by the machine.
Referring now to the drawing in detail, the protective shield 1 is composed of an outer angle profile 2 which is welded to an inner angle profile 3 at 4 and along the leg ends. In this way there will be obtained a box of triangular transverse section. This box may additionally be reinforced by the welding-in of intermediate webs 5 and 6.
The ends of the protective shield l have supports 7 welded thereto by means of which the protective shield l is mounted on the calender stand. For purposes of obtaining a saving in the weight, the angle profiles 2 and 3 and, if desired, the intermediate webs 5 and 6 may be punched through or perforated as indicated at 8.
lnstead of designing the protective shield l with a triangular cross section, it is, of course, possible to provide the protective shield with any other suitable contour. The intermediate webs 5 and 6 may also, in a different way than that depicted in the drawing, be arranged and assembled or, if desired, may be completely omitted. lnstead of the connection of the metal profiles 2 and 3 and intermediate webs 5 and 6 by welding, any other connecting method, for instance, riveting or screwing together of the elements may be selected. As material for the angle profiles 2 and 3, and intermediate webs 5 and 6, light or heavy metal may be employed in conformity with the specific requirements involved.
As hard foam synthetic material anystandard material of this type may be used. For instance, ureaforrnaldehyde and polyvinyl formaldehyde foam plastics may be employed.
It is, of course, to be understood that the present invention is, by no means, limited to the particular structure shown in the drawing, but also comprises any modifications within the scope of the appended claims.
What I claim is:
1. A protective shield for use at the bite of rollers of paper and textile calenders, which includes: first plate means comprising at least two longitudinal plate sections forming an angle with each other, second plate means likewise comprising at least two longitudinal plate sections forming with each other an angle and having their free longitudinal marginal portions firmly connected to the free longitudinal marginal portions of the respective adjacent plate sections of said first plate means so as to confine therewith a longitudinal shield structure of triangular cross-section, and synthetic material of hard foam substance within said longitudinal structure.
2. A protective shield according to claim 1, in which said first and second plate means are of metal.
3. A protective shield according to claim 1, in which at least one of said first and second plate means is perforated.
4. A protective shield according to claim 1, which includes reinforcing web means bracing the plate sections of said first plate means relative to each other. 7
5. A protective shield according to claim 1, in which the angle defined by the plate sections of said first plate means is less than the angle defined by the plate sections of said second plate means.
6. A protective shield according to claim 1, which includes supporting means at both ends of said longitudinal structure of triangular cross-section for mounting said shield structure to a calender stand.
PO-W5O UNITED STATES PATENT OFFICE 5 69 CERTIFICATE OF CORRECTION Patent No. 3 65 846 Dated y 30 1972 lnventofls) Jurgen Schlunke It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
On the cover sheet insert [73] Assignee Joh. Kleinewefers Sohne Signed and sealed this 27th day of February 1973.
(SEAL) Attest:
EDWARD M.FLETCHER,JR. ROBERT GOTTSCI-IALK Attesting Officer Commissioner of Patents

Claims (6)

1. A protective shield for use at the bite of rollers of paper and textile calenders, which includes: first plate means comprising at least two longitudinal plate sections forming an angle with each other, second plate means likewise comprising at least two longitudinal plate sections forming with each other an angle and having their free longitudinal marginal portions firmly connected to the free longitudinal marginal portions of the respective adjacent plate sections of said first plate means so as to confine therewith a longitudinal shield structure of triangular cross-section, and synthetic material of hard foam substance within said longitudinal structure.
2. A protective shield according to claim 1, in which said first and second plate means are of metal.
3. A protective shield according to claim 1, in which at least one of said first and second plate means is perforated.
4. A protective shield according to claim 1, which includes reinforcing web means bracing the plate sections of said first plate means relative to each other.
5. A protective shield according to claim 1, in which the angle defined by the plate sections of said first plate means is less than the angle defined by the plate sections of said second plate means.
6. A protective shield according to claim 1, which includes supporting means at both ends of said longitudinal structure of triangular cross-section for mounting said shield structure to a calender stand.
US105218A 1971-01-11 1971-01-11 Protective shield for use at the bite of rollers for paper and textile calenders Expired - Lifetime US3665846A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203040A1 (en) * 1985-05-21 1986-11-26 Marcello Giuliani Accident prevention guard for carding plants of the textile industries and for other uses
US4867055A (en) * 1987-06-10 1989-09-19 Kleinewefers Gmbh Guard for the nips of rolls in calenders
JPH073690A (en) * 1993-06-05 1995-01-06 Sulzer Papertec Krefeld Gmbh Device for preventing finger from pinching in gap of roll
EP1106718A1 (en) * 1999-12-03 2001-06-13 Firma Carl Freudenberg Box for air guiding
US20060163041A1 (en) * 2005-01-26 2006-07-27 Argonics, Inc. Roller safety support system for conveyor system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883258A (en) * 1926-05-26 1932-10-18 Wood Newspaper Mach Corp Finger guard
US1925364A (en) * 1932-06-07 1933-09-05 Harvey N Ault Safety device for wringers
US3256395A (en) * 1960-07-13 1966-06-14 Maschf Augsburg Nuernberg Ag Operator safety device for rotating machinery parts
US3498217A (en) * 1967-03-11 1970-03-03 Heidelberger Druckmasch Ag Safety device for machines having oppositely rotating cylinders

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883258A (en) * 1926-05-26 1932-10-18 Wood Newspaper Mach Corp Finger guard
US1925364A (en) * 1932-06-07 1933-09-05 Harvey N Ault Safety device for wringers
US3256395A (en) * 1960-07-13 1966-06-14 Maschf Augsburg Nuernberg Ag Operator safety device for rotating machinery parts
US3498217A (en) * 1967-03-11 1970-03-03 Heidelberger Druckmasch Ag Safety device for machines having oppositely rotating cylinders

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203040A1 (en) * 1985-05-21 1986-11-26 Marcello Giuliani Accident prevention guard for carding plants of the textile industries and for other uses
US4867055A (en) * 1987-06-10 1989-09-19 Kleinewefers Gmbh Guard for the nips of rolls in calenders
JPH073690A (en) * 1993-06-05 1995-01-06 Sulzer Papertec Krefeld Gmbh Device for preventing finger from pinching in gap of roll
US5427020A (en) * 1993-06-05 1995-06-27 Sulzer Papertec Krefeld Gmbh Finger-protection device for a roller gap
JP2661874B2 (en) * 1993-06-05 1997-10-08 フォイト ズルツァー フィニッシング ゲゼルシャフト ミット ベシュレンクテル ハフツング Finger jam prevention device for roll gap
EP1106718A1 (en) * 1999-12-03 2001-06-13 Firma Carl Freudenberg Box for air guiding
US20060163041A1 (en) * 2005-01-26 2006-07-27 Argonics, Inc. Roller safety support system for conveyor system
US7284658B2 (en) 2005-01-26 2007-10-23 Argonics, Inc. Roller safety support system for conveyor system

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