EP0033710A2 - Vorrichtung zum Abwickeln, Antreiben und Spannen von Papier - Google Patents
Vorrichtung zum Abwickeln, Antreiben und Spannen von Papier Download PDFInfo
- Publication number
- EP0033710A2 EP0033710A2 EP81450002A EP81450002A EP0033710A2 EP 0033710 A2 EP0033710 A2 EP 0033710A2 EP 81450002 A EP81450002 A EP 81450002A EP 81450002 A EP81450002 A EP 81450002A EP 0033710 A2 EP0033710 A2 EP 0033710A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- unwinding
- sheet
- advancing
- tensioning
- 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- Withdrawn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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D19/00—Movable-strip writing or reading apparatus
Definitions
- the present invention relates to a device for unwinding, advancing and tensioning a sheet of paper adjacent to a table provided with tracing instruments for example.
- Various devices which allow a sheet of paper to be unrolled and advanced in front of a table provided with tracing instruments, for example consisting of unwinding from a feed roller placed at one end of the table the paper towards a rotating unwinding roller.
- tracing instruments for example consisting of unwinding from a feed roller placed at one end of the table the paper towards a rotating unwinding roller.
- a motor arranged at the opposite end of the table driven by a motor, in order to allow the tracing operation for example the advance of the paper is interrupted, one face of the sheet is in abutment on the table as well as during the movement of the paper. So that the paper is stretched on the table between the two rollers, the rotation of the feed roller is slowed down, while the drive of the take-up roller is provided with a non-return.
- This type of device has a major drawback in terms of the tension of the paper between the two rollers, in fact it is known that the paper is particularly sensitive to variations in the hygrometric state of the air, which results in partial deformation of the sheet. whose location is impossible to determine, affecting the quality and accuracy of the tracing.
- the invention aims to overcome the main drawback described above.
- the subject of the invention is therefore a device for unwinding and in advance of a sheet of paper facing a table provided with tracing instruments, for example comprising a paper feed roller placed at one end of the table held at its ends by two rotating conical sleeves secured to two flanges, the rotation of the conical shanks being braked by all appropriate means, such as spring and shoe acting on the rotating axis of each of them, the sheet of paper is caused to pass between two rotating rollers placed at the opposite end of the table , one of the rollers being a pressure roller causing the paper to advance when it is driven in rotation by the second roller driven by an electric motor, the unwound paper is returned to a revolving recovery roller provided for this purpose, intermediate between the feed and feed rollers, the paper sheet is supported on the table, the paper tension during the feed and / or the immobilization is generated by an articulated balance placed between the feed roller and the table, the latter has the function of tensioning the paper and compensating for deformations due to the hygrometric state so
- the device comprises a paper feed roller 1 held at one end of the table 2 provided with tracing instruments for example, the sheet of paper 5 is caused to pass between two rotating rollers 3 and 4, the roller 4 is a pressure roller, the rollers 3 and 4 are held at the opposite end of the table 2, the roller 4 is rotated during the rotation of the roller 3 on which it is supported by an electric motor for example not shown, provided with a non-return, the sheet of paper 5 unwound during the rotation of the rollers 3 and 4 is returned on a rotating recovery roller 6 provided for this effect near the rollers 3 and 4, the unwound sheet of paper 5 is stretched during the interruption of the advance by means of a mobile balance 12 placed between the table 2 and the feed roller 1.
- a mobile balance 12 placed between the table 2 and the feed roller 1.
- the paper feed roller 1 is provided with a hollow cylindrical central core 7, held at its ends by conical shanks 8 extended by a rotating axis 9 held on flanges 10, one of the conical shanks 8 has its axis 9a movable longitudinally with respect to the support flange 10, between the flange 10 and the fitting 8, a compression spring 11 allows the fitting of the fittings 8 on the cylindrical central core 7 and therefore the maintenance feed roller 1; similarly, it allows when the spring 11 is compressed to release the roller 1 for its extraction or placement.
- the axes 9 are braked by means of tared compression springs provided with pads pressing transversely on the axes, said springs are held in integral supports flanges 10 not shown, this braking of reeling adjustable in intensity is intended to allow the tension of the paper during the advance and / or the interruption of the advance and this by means of a balancer__12 represented figure 3 this one consisting of a rotating cylindrical cross member 13 provided with articulations 14 with ball joints for example adjusting on the independent movable arms 15, articulated at 15a and connected to the table 2, the cross member 13 is placed between the table 2 and the roller feed 1, the weight of the balance 12 is determined according to the nature of the paper used and the braking power of the feed roller so that the tension involved in the paper is sufficient to compensate for the deformations due to the hygrometric state of the air for example, said sufficient tension is generated by the rotation 'of the balance 12 around the articulation 15a of the movable
- the sheet of paper 5 which passes between the rollers 3 and 4 and which is driven by said rollers is returned to a recovery roller 6, the pressure exerted by the roller 4 is obtained by means of arrangements such as spring 15b acting on the axis 16 for holding the roller 4, the axis being maintained between two slides 17, the rotation of the roller 3 generating the rotation of the pressure roller 4 is obtained by an electric motor known as stepping 18 allowing precise unwinding of the paper, the recovery roller 6 is driven by means of a belt or a chain 19 moving between two sprockets 20 and 21, the sprocket 20 is fixed on the shaft 16a of the roller 3 and the pinion 21 on the axis 22 of the rotating conical fitting 23 roller support 6, the speed of rotation of the conical fittings 23 recovery roller supports 6 is greater than the speed of rotation of the roller 3 and this in order to compensate for the rewinding of the paper according to variable diameter of the roller 6 as said winding.
- the recovery roller 6 is driven by means of a belt or a chain 19 moving between two s
- the tapered shanks 23 enter a cylindrical tube 24 on which the paper is wound as previously described for the feed roller 1, the assembly of the tapered shanks 23 on the tube 24 is however slippery so as to keep the paper taut during the action of rewinding and advancing the paper without tearing it.
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Unwinding Webs (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8002514 | 1980-02-01 | ||
| FR8002514A FR2475020A1 (fr) | 1980-02-01 | 1980-02-01 | Dispositif de devidement, avance et tension de papier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0033710A2 true EP0033710A2 (de) | 1981-08-12 |
| EP0033710A3 EP0033710A3 (de) | 1982-04-21 |
Family
ID=9238241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81450002A Withdrawn EP0033710A3 (de) | 1980-02-01 | 1981-01-30 | Vorrichtung zum Abwickeln, Antreiben und Spannen von Papier |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0033710A3 (de) |
| JP (1) | JPS56161251A (de) |
| FR (1) | FR2475020A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886133A (zh) * | 2019-12-12 | 2020-03-17 | 安庆市三环康泰纸塑有限公司 | 一种淋膜纸的加热装置及其辅助展平结构 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772147A (en) * | 1995-07-21 | 1998-06-30 | Gerber Garment Technology, Inc. | Apparatus for performing a work operation on sheet material and a sheet material feed mechanism therefor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1567285A (de) * | 1968-03-15 | 1968-05-16 | ||
| CA996756A (en) * | 1973-07-11 | 1976-09-14 | Sherritt Gordon Mines Limited | Process for treating high magnesium nickeliferous laterites and garnierites |
| DE2443392B2 (de) * | 1974-09-11 | 1979-11-22 | Hellige Gmbh, 7800 Freiburg | Registriergerät für einen bandförmigen Aufzeichnungsträger |
| DE2625457C3 (de) * | 1976-06-05 | 1979-01-04 | Electroacustic Gmbh, 2300 Kiel | Registriergerät |
-
1980
- 1980-02-01 FR FR8002514A patent/FR2475020A1/fr not_active Withdrawn
-
1981
- 1981-01-30 EP EP81450002A patent/EP0033710A3/de not_active Withdrawn
- 1981-02-02 JP JP1419081A patent/JPS56161251A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886133A (zh) * | 2019-12-12 | 2020-03-17 | 安庆市三环康泰纸塑有限公司 | 一种淋膜纸的加热装置及其辅助展平结构 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0033710A3 (de) | 1982-04-21 |
| FR2475020A1 (fr) | 1981-08-07 |
| JPS56161251A (en) | 1981-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT LU NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19820211 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19831201 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ETCHEPARRE, JEAN Inventor name: ETCHEPARRE, BERNARD |