EP0327511A2 - Supplying assembly for notching plotters - Google Patents
Supplying assembly for notching plotters Download PDFInfo
- Publication number
- EP0327511A2 EP0327511A2 EP89830015A EP89830015A EP0327511A2 EP 0327511 A2 EP0327511 A2 EP 0327511A2 EP 89830015 A EP89830015 A EP 89830015A EP 89830015 A EP89830015 A EP 89830015A EP 0327511 A2 EP0327511 A2 EP 0327511A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- supplying assembly
- notching
- assembly according
- material supplying
- sensor
- 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- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/042—Sensing the length of a web loop
Definitions
- the present invention relates to a supplying assembly for notching not perforating plotters.
- notching plotters are commercially available which are used for notching words, patterns and the like on adhesive materials and other elements.
- known notching plotters are affected by limitations related to the size of the words or patterns which can be made, which size is generally smaller than 150 cm.
- the material to be notched is arranged under the cutting knife by means of two side rubber small wheels which press the material against an embossed cylinder.
- the notching knife starts to cut from a side edge of the material, this knife subject the material being processed to a side pressure tending to displace said material, with a consequent poor accuracy of the words or patterns being made.
- the main object of the present invention is to overcome the above mentioned drawbacks, by providing a material supplying assembly, specifically designed for a notching not perforating plotter, which affords the possibility of making wordings or patterns of great size, even greater than 10 m, with a great working accuracy.
- Another object of the invention is to provide such a plotter in which the side stresses exerted by the notching or cutting knife are reduced to a minimum, thereby affording a more accurate processing of the material being notched.
- Yet another object of the invention is to provide such a plotter which is very reliable and safe in operation and which, moreover, can be constructed starting from easily available components and materials.
- a material supplying assembly for notching not perforating plotters characterized in that said material supplying assembly comprises a bearing frame supporting on the top thereof a notching plotter, arranged between a pair of cylinders for guiding the material to be notched, there being moreover provided a material unwinding assembly supported by said bearing frame and controlled by a sensor adapted to control the length of the material being unwound from said unwinding assembly.
- the material supplying material specifically designed for notching not perforating plotters comprises a bearing frame, indicated overally at the reference number 1, which advantageously comprises double-T shaped side uprights 2.
- the bearing frame 1 supports, on the top thereof, a notching plotter,of conventional type, indicated at the reference number 3.
- a main feature of the present invention is that upstream and downstream of the notching plotter 3 there are provided a first guide cylinder 4 and a second guide cylinder 5, which are mounted on sliding bearings for displacing the material to be processed with a very reduced friction.
- the cylinders 4 and 5 are provided with end flanges 7, specifically provided for guiding the material being notched.
- This material is unwound from an unwinding assembly, indicated overally at the reference number 10, which unwinding assembly comprises a unwinding cylinder 11, driven by a motor 12, in turn controlled by a sensor, for adjusting the length of the material being unwound, which sensor can consist of a microswitch 13, a photocell or the like.
- this motorized unwinding assembly is very important since, by adjusting or controlling the amount of the material being unwound or supplied, it will be possible to provide, both upstream and downstream of the plotter, the same material amount; in this way the material will be well balanced and the cutting knife will be not subjected to undesired tension stresses susceptible to prevent the formed wordings from perfectly closing.
- the material being processed will be not subjected to tension due to material portions hanging down upstream or downstream of the plotter.
- Another important feature of the invention is the provision of the flanges 7 on the cylinders, which flanges are so arranged as to be able of engaging with the side edges of the material to be notched, with the advantage of reducing to a minimum the side stresses exerted by the knife during the cutting step which, as is known, starts from a side of the material.
- the cylinders 4 and 5 allow for the material to slide always with a perfect arrangement, thereby affording the possibility of making very large size wordings or patterns.
Abstract
Description
- The present invention relates to a supplying assembly for notching not perforating plotters.
- As is known, notching plotters are commercially available which are used for notching words, patterns and the like on adhesive materials and other elements.
- However, known notching plotters are affected by limitations related to the size of the words or patterns which can be made, which size is generally smaller than 150 cm.
- This limitation is essentially due to the construction of these known plotters and, in this connection, it should be pointed out that words or patterns of a size greater than the mentioned maximum size would be scarcely accurate.
- In fact, in conventional plotters the material to be notched is arranged under the cutting knife by means of two side rubber small wheels which press the material against an embossed cylinder.
- During the cutting operations a great size material would be subjected to high tension stresses which would prevent the notched words from being perfectly closed.
- Moreover, since the notching knife starts to cut from a side edge of the material, this knife subject the material being processed to a side pressure tending to displace said material, with a consequent poor accuracy of the words or patterns being made.
- Thus, the main object of the present invention is to overcome the above mentioned drawbacks, by providing a material supplying assembly, specifically designed for a notching not perforating plotter, which affords the possibility of making wordings or patterns of great size, even greater than 10 m, with a great working accuracy.
- Another object of the invention is to provide such a plotter in which the side stresses exerted by the notching or cutting knife are reduced to a minimum, thereby affording a more accurate processing of the material being notched.
- Yet another object of the invention is to provide such a plotter which is very reliable and safe in operation and which, moreover, can be constructed starting from easily available components and materials.
- According to one aspect of the present invention, the above mentioned objects, as well as yet other objects, which will become more apparent hereinafter, are achieved by a material supplying assembly for notching not perforating plotters, characterized in that said material supplying assembly comprises a bearing frame supporting on the top thereof a notching plotter, arranged between a pair of cylinders for guiding the material to be notched, there being moreover provided a material unwinding assembly supported by said bearing frame and controlled by a sensor adapted to control the length of the material being unwound from said unwinding assembly.
- Futher characteristics and advantages of the present invention will become more apparent from the following detailed description of a preferred embodiment thereof, which is illustrated, by way of an indicative but not limitative example, in the accompanying drawings, where:
- figure 1 is a schematic side perspective view of the material supplying assembly according to the invention;
and - figure 2 is another side view clearly illustrating the subject supplying assembly for supplying material to be notched to a notching not perforating plotter.
- With reference to the figures of the accompanying drawings, the material supplying material specifically designed for notching not perforating plotters according to the present invention comprises a bearing frame, indicated overally at the
reference number 1, which advantageously comprises double-Tshaped side uprights 2. - The bearing
frame 1 supports, on the top thereof, a notching plotter,of conventional type, indicated at thereference number 3. - A main feature of the present invention is that upstream and downstream of the
notching plotter 3 there are provided afirst guide cylinder 4 and asecond guide cylinder 5, which are mounted on sliding bearings for displacing the material to be processed with a very reduced friction. - As is shown the
cylinders end flanges 7, specifically provided for guiding the material being notched. - This material is unwound from an unwinding assembly, indicated overally at the
reference number 10,which unwinding assembly comprises aunwinding cylinder 11, driven by amotor 12, in turn controlled by a sensor, for adjusting the length of the material being unwound, which sensor can consist of amicroswitch 13, a photocell or the like. - The provision of this motorized unwinding assembly is very important since, by adjusting or controlling the amount of the material being unwound or supplied, it will be possible to provide, both upstream and downstream of the plotter, the same material amount; in this way the material will be well balanced and the cutting knife will be not subjected to undesired tension stresses susceptible to prevent the formed wordings from perfectly closing.
- In fact, owing to the disclosed arrangement, the material being processed will be not subjected to tension due to material portions hanging down upstream or downstream of the plotter.
- Another important feature of the invention is the provision of the
flanges 7 on the cylinders, which flanges are so arranged as to be able of engaging with the side edges of the material to be notched, with the advantage of reducing to a minimum the side stresses exerted by the knife during the cutting step which, as is known, starts from a side of the material. - Thus, the
cylinders - From the above disclosure it should be apparent that the invention fully achieves the intended objects.
- While the invention has been disclosed and illustrated with reference to a preferred embodiment thereof, it should be apparent that the disclosed embodiment is susceptible to several modifications and variations all of which will come within the spirit and scope of the appended claims.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8819330A IT1215812B (en) | 1988-02-05 | 1988-02-05 | FEEDER UNIT FOR CARVING PLOTTER WITHOUT PERFORATION. |
IT1933088 | 1988-02-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0327511A2 true EP0327511A2 (en) | 1989-08-09 |
EP0327511A3 EP0327511A3 (en) | 1990-05-16 |
Family
ID=11156793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89830015A Withdrawn EP0327511A3 (en) | 1988-02-05 | 1989-01-16 | Supplying assembly for notching plotters |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0327511A3 (en) |
JP (1) | JPH01253497A (en) |
IT (1) | IT1215812B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0343271A (en) * | 1989-07-12 | 1991-02-25 | Mimaki Eng:Kk | Roll paper support mechanism of cutting plotter |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806018A (en) * | 1970-12-21 | 1974-04-23 | Kalle Ag | Roll systems for webs of material |
US4477822A (en) * | 1980-10-01 | 1984-10-16 | Nicolet Zeta | Graphic recorder |
GB2144399A (en) * | 1983-07-20 | 1985-03-06 | Beam Tubes Limited | Strip or wire accumulator |
US4561757A (en) * | 1985-03-04 | 1985-12-31 | Xerox Corporation | Belt support apparatus |
EP0198274A1 (en) * | 1985-04-01 | 1986-10-22 | Investronica S.A. | Method of cutting sheet material |
-
1988
- 1988-02-05 IT IT8819330A patent/IT1215812B/en active
-
1989
- 1989-01-16 EP EP89830015A patent/EP0327511A3/en not_active Withdrawn
- 1989-02-06 JP JP1027327A patent/JPH01253497A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806018A (en) * | 1970-12-21 | 1974-04-23 | Kalle Ag | Roll systems for webs of material |
US4477822A (en) * | 1980-10-01 | 1984-10-16 | Nicolet Zeta | Graphic recorder |
GB2144399A (en) * | 1983-07-20 | 1985-03-06 | Beam Tubes Limited | Strip or wire accumulator |
US4561757A (en) * | 1985-03-04 | 1985-12-31 | Xerox Corporation | Belt support apparatus |
EP0198274A1 (en) * | 1985-04-01 | 1986-10-22 | Investronica S.A. | Method of cutting sheet material |
Also Published As
Publication number | Publication date |
---|---|
IT8819330A0 (en) | 1988-02-05 |
JPH01253497A (en) | 1989-10-09 |
EP0327511A3 (en) | 1990-05-16 |
IT1215812B (en) | 1990-02-22 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19900919 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
17Q | First examination report despatched |
Effective date: 19920908 |
|
18W | Application withdrawn |
Withdrawal date: 19921013 |