GB2126689A - A roller having a covering of elastomer material - Google Patents
A roller having a covering of elastomer material Download PDFInfo
- Publication number
- GB2126689A GB2126689A GB08235748A GB8235748A GB2126689A GB 2126689 A GB2126689 A GB 2126689A GB 08235748 A GB08235748 A GB 08235748A GB 8235748 A GB8235748 A GB 8235748A GB 2126689 A GB2126689 A GB 2126689A
- Authority
- GB
- United Kingdom
- Prior art keywords
- covering
- roller
- cylinder
- key
- groove
- 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.)
- Withdrawn
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 18
- 239000000806 elastomer Substances 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 12
- 230000000452 restraining effect Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 239000004753 textile Substances 0.000 abstract description 4
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 3
- 238000005498 polishing Methods 0.000 abstract description 3
- 235000009566 rice Nutrition 0.000 abstract description 3
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 6
- 239000004568 cement Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 208000034693 Laceration Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Paper (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
A roller (10), particularly for severe applications such as use in textile fibre drawing machines or rice polishing machines, comprises a metal cylinder (12) about the circumferential surface of which a covering (26) of elastomer material is wrapped. The elastomer material of the covering (26) incorporates metal strengthening wires (28, 29). The covering (26) is slidably fitted and held against circumferential displacement on the cylinder by keying means (20, 14) and removable means (22) are provided for restraining the covering axially relative to the cylinder. <IMAGE>
Description
SPECIFICATION
A roller having a covering of elastomer material
The present invention relates to covered rollers, for example, for particularly severe applications, such as use in textile fibre drawing machines, rice polishing machines, cement works, paper mills, printing machines and the like.
It is known to provide a roller comprising a metal cylinder to the circumferential surface of which a covering of elastomer material is adhered. The covering generally consists of a tubular rubber or polyurethane element constructed by injection moulding or casting methods, or by winding systems.
Such known rollers have the disadvantage that faulty or incomplete adhesion of the covering to the cylinder can lead to the formation, between their facing surfaces, of air bubbles or pockets which during the use of the roller can cause bursting with consequent laceration of the elastomer material covering.
Furthermore, as these rollers are generally used under extremely severe temperature, pressure and speed conditions, the elastomer covering wears relatively quickly, and must therefore be frequently restored. With the known rollers, the restoration operation is particularly complicated and costly, and must be carried out by the roller manufacturer. In this respect, the operation requires the use of special tools both to remove the worn covering and to restore the cylinder surface. Thus, it is necessary for the user to send the roller to the manufacturer for restoration and this involves transportation problems and the need to keep stand-by rollers for use while awaiting the return of the restored rollers.The restoration operation can also alter the dimensions of the metal cylinder as its diameter may be reduced by surface machining if this is necessary to remove every residue of the worn material.
It is an object of the present invention to reduce the disadvantages discussed above.
According to the present invention there is provided a roller comprising a metal cylinder and a covering around the circumferential surface of the cylinder, the covering being of reinforced elastomer material, wherein the covering is held on the circumferential surface by keying means so as to be axially slidable relative thereto, and further comprising removable means restraining axial movement of the covering relative to the cylinder.
In a roller of the invention it is not necessary to cement or force fit the elastomer covering onto the surface of the metal cylinder, as the covering is effectively and securely locked with respect to the cylinder both axially and rotatably.
Consequently, the operations of removing and replacing the covering are substantially facilitated, as the withdrawal of the covering from the cylinder in practice requires no force nor the use of specific tools.
As the covering is reinforced, it has the necessary resistance to stresses which, during the use of the roller, are transmitted to it by the keying means. Preferably, the covering is reinforced by a plurality of metal wires disposed in the elastomer material circumferentially of the covering.
In an embodiment, the keying means include one or more keys integrally formed with the covering and projecting from its inner face, the length of each key being less than the axial dimension of the covering, and each key engaging a corresponding external axially extending groove in the cylinder.
Preferably each cylinder groove extends from one of the end faces of the cylinder to a certain distance from the opposite end face, and the length of each key is less than that of the respective groove. One end of each key abuts against the closed end of the respective groove.
Preferably, a restraining member is removably mounted at the open end of each groove and abuts against the other end of the corresponding key of the covering.
The covering may be removed from the cylinder in a particularly simple manner. Thus, once the restraining members have been removed the covering is simply slid axially relative to the cylinder.
An embodiment of the present invention will hereinafter be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 is a partly sectioned perspective view of a rubber-covered roller of the invention,
Figure 2 is a longitudinal section of the roller taken on line Il-lI of Figure 1,
Figure 3 is an exploded perspective view of a detail of the roller of Figure 1, and
Figure 4 is a perspective view to an enlarged scale of a reinforcement wire for the elastomer covering of the roller.
The rubber-covered roller 10 illustrated in the drawings can be used in many circumstances, for example, it could be employed in textile fibre drawing machines, in rice polishing machines, in cement works, paper mills or printing machines.
The roller 10 comprises a steel cylinder 12 having in its circumferential surface four axially extending grooves 14 which extend from one of the end faces 1 2a of the cylinder 1 2 towards the other end face 1 2b thereof. The grooves 1 4 are angularly equidistantly spaced and terminate a predetermined distance from the other end face 1 2b of the cylinder. As can be seen most clearly in
Figure 3, the open end of each groove 14, ie the end adjacent to the face 1 2a of the cylinder 1 2, has a deeper terminal part 1 4a which with the remaining part define a step 1 6. A threaded bore 18 is formed in the front wall of each step 1 6.
An elastomer material covering 26 strengthened by the incorporation of a reinforcement 27 is wrapped around the circumferential surface of the cylinder 1 2. In the illustrated embodiment, the reinforcement 27 comprises a plurality of closely spaced metal wires 28 disposed circumferentially and interlaced with axially extending connection wires 29. As shown in detail in Figure 4, the wires 28 are formed from undulated helical strands of steel, preferably brass coated steel.
However, the reinforcement 27 could be of a different type depending upon the requirements for the roller during use. For example, a textile reinforcement could be provided.
Four keys 20 are integrally formed in the elastomer material covering 26 and project from the inner face thereof. As is clearly shown in the drawings, each key 20 engages in a respective one of the grooves 14 of the cylinder 1 2 such that the covering 26 is rotationally locked with respect to the cylinder. In this respect, the length of each of the keys 20 is less than that of the respective groove 14. One end of each key 20 abuts the closed end 1 4b of the respective groove 1 4.
The opposite end of each key 20 is axially locked by a substantially T-shaped restraining member 22 having a head 22a which rests on the step 1 6 and contacts the key 20. The shank 22b of each member 22 abuts against the front wall of the respective step 1 6. Each restraining member 22 is removably fixed to the cylinder 12 by a bolt or socket head 24 which is screwed into the respective bore 1 8, the head of the bolt 24 remaining accessible from the outside. In this manner, the covering 26 is axially locked with respect to the cylinder 12.
The configuration of the roller described and illustrated ensures that, in the case of wear, the covering 26 may be easily and rapidly replaced.
For this replacement, it is sufficient to remove the dour restraining members 22 by unscrewing the four bolts 24. The cover 26 can then be axially moved relative to the cylinder from the end face 1 2a such that the keys 20 are axially withdrawn from the grooves 1 4. The cylinder 12 is thus ready to receive a new covering 26 without further operations being necessary.
As the elastomer material covering 26 is not adhered to the circumferential surface of the cylinder 12, a roller of the invention is able to withstand the most severe applicational conditions without any risk of bursting, which could lead to accidents due to the tearing of the elastomer material covering 26.
The reinforcement ensures that the covering 26 has the necessary resistance to stresses transmitted to it in use from the cylinder 12 by way of the keys 20.
The constructional details of the roller can be modified, for example, the number and arrangement of the keys 20 and the grooves 1 4 could be varied.
Claims (8)
1. A roller comprising a metal cylinder and a covering around the circumferential surface of the cylinder, the covering being of a reinforced elastomer material, wherein the covering is held on the circumferential surface by keying means so as to be axially slidable relative thereto, and further comprising removable means restraining axial movement of the covering relative to the cylinder.
2. A roller as claimed in Claim 1, wherein the covering is reinforced by metal wires disposed in the elastomer material to extend circumferentially of the covering.
3. A roller as claimed in Claim 2, wherein the metal wires are formed from undulated helical strands of steel, preferably brass coated steel.
4. A roller as claimed in Claim 2 or Claim 3, wherein the circumferential metal wires are interlaced with axially extending connection wires.
5. A roller as claimed in any preceding claim, wherein the keying means comprises at least one key integrally formed with the covering and projecting from its inner face, the length of the or each key being less than the axial dimension of said covering, and the or each key engaging a corresponding external axial groove in the cylinder.
6. A roller as claimed in Claim 5, wherein the or each groove of the cylinder extends from one of the end faces of the cylinder and terminates at a distance from the opposite end face thereof, and the length of the or each key is less than that of the respective groove, one end of the or each key abutting against the closed end of the respective groove, and wherein said restraining means comprises a respective restraining member removably mounted at the open end of the or each groove to abut against the other end of the respective key.
7. A roller as claimed in Claim 5 or 6, wherein four keys are disposed in angularly equidistant positions about the axis of the roller.
8. A roller substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8268063A IT8268063A0 (en) | 1982-09-02 | 1982-09-02 | RUBBER-COATED ROLLER FOR TEXTILE FIBER STRIPPING MACHINES AND SIMILAR APPLICATIONS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2126689A true GB2126689A (en) | 1984-03-28 |
Family
ID=11307576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08235748A Withdrawn GB2126689A (en) | 1982-09-02 | 1982-12-15 | A roller having a covering of elastomer material |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5943213A (en) |
| BR (1) | BR8303500A (en) |
| DE (1) | DE3247600A1 (en) |
| FR (1) | FR2532698A1 (en) |
| GB (1) | GB2126689A (en) |
| IT (1) | IT8268063A0 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0196443A2 (en) * | 1985-03-29 | 1986-10-08 | Saueressig Gmbh & Co. | Intaglio printing cylinder comprising a core and a detachable sleeve |
| EP0463366A1 (en) * | 1990-06-25 | 1992-01-02 | Sulzer - Escher Wyss AG | Press-roll with adjustable deflection |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385673U (en) * | 1986-11-25 | 1988-06-04 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3111742A (en) * | 1961-12-18 | 1963-11-26 | Lakin & Sons Inc A | Disc construction for rolls |
| FR2176205A5 (en) * | 1972-03-14 | 1973-10-26 | Sami | |
| US3804473A (en) * | 1972-10-03 | 1974-04-16 | Evans W & Son Ltd | Mechanically actuated self-lubricated roll |
| DE2342527C2 (en) * | 1973-08-23 | 1982-05-13 | Continental Gummi-Werke Ag, 3000 Hannover | Roller for the pressure treatment of material webs |
| CH612249A5 (en) * | 1977-02-09 | 1979-07-13 | Jakob Hans Ag Maschinenbau | Roll for roll machines |
-
1982
- 1982-09-02 IT IT8268063A patent/IT8268063A0/en unknown
- 1982-12-15 GB GB08235748A patent/GB2126689A/en not_active Withdrawn
- 1982-12-22 DE DE19823247600 patent/DE3247600A1/en not_active Withdrawn
-
1983
- 1983-06-07 FR FR8309442A patent/FR2532698A1/en not_active Withdrawn
- 1983-06-09 JP JP58103520A patent/JPS5943213A/en active Pending
- 1983-06-30 BR BR8303500A patent/BR8303500A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0196443A2 (en) * | 1985-03-29 | 1986-10-08 | Saueressig Gmbh & Co. | Intaglio printing cylinder comprising a core and a detachable sleeve |
| EP0196443A3 (en) * | 1985-03-29 | 1987-12-02 | Saueressig & Co. | Intaglio printing cylinder comprising a core and a detachable sleeve |
| EP0463366A1 (en) * | 1990-06-25 | 1992-01-02 | Sulzer - Escher Wyss AG | Press-roll with adjustable deflection |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5943213A (en) | 1984-03-10 |
| BR8303500A (en) | 1984-04-24 |
| IT8268063A0 (en) | 1982-09-02 |
| FR2532698A1 (en) | 1984-03-09 |
| DE3247600A1 (en) | 1984-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |