GB2245857A - A method of and apparatus for making endless ribbons - Google Patents

A method of and apparatus for making endless ribbons Download PDF

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Publication number
GB2245857A
GB2245857A GB9014433A GB9014433A GB2245857A GB 2245857 A GB2245857 A GB 2245857A GB 9014433 A GB9014433 A GB 9014433A GB 9014433 A GB9014433 A GB 9014433A GB 2245857 A GB2245857 A GB 2245857A
Authority
GB
United Kingdom
Prior art keywords
ribbon
ribbons
endless
seamless
turn table
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Withdrawn
Application number
GB9014433A
Other versions
GB9014433D0 (en
Inventor
Yiu Wah Chow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9014433A priority Critical patent/GB2245857A/en
Publication of GB9014433D0 publication Critical patent/GB9014433D0/en
Publication of GB2245857A publication Critical patent/GB2245857A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/06—Severing by using heat
    • B26F3/08—Severing by using heat with heated members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
    • B26D1/03—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member with a plurality of cutting members
    • B26D1/035—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member with a plurality of cutting members for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/10—Making cuts of other than simple rectilinear form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3846—Cutting-out; Stamping-out cutting out discs or the like

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

It is known to make endless nylon ribbons for use, e.g. in computer printers by joining the two ends of a length of ribbon by means of ultrasonic welding. However, the quality of print in the vicinity of such joints deteriorates with use. In the method of the invention, an endless, seamless ribbon is prepared by cutting from a sheet of ribbon material having a thickness equal to the desired thickness of the ribbon a number of endless, seamless ribbons. The ribbons may be produced by rotating a turntable supporting a circular sheet below radially equi-shaped heated knives 3. Ribbons thereby produced have the advantage of seamless ribbons in terms of print quality, but are comparatively cheap to manufacture. <IMAGE>

Description

A Method of and Apparatus for Making Endless Ribbon The present invention relates to endless ribbons, especially for use in computers, computer printers, typewriters and other office machines.
Endless nylon ribbons are known which are made from a length of ribbon the two ends of which are joined together by ultrasonic welding. Endless ribbons which include a joint or seam suffer frorn the dlsadvantssge that after prolonged use of the ribbon in a printer the quality of print from the region of the joint or seam becomes different to that from the remainder of the ribbon, and after further use the joint or seam may bresk.
Endless nylon ribbons are also known which do not have any seam or joint. These seamless ribbons are produced using special purpose looms. These seamless ribbons do not suffer from the disadvantages of variable print quality or breakage at the seam, but are expensive to manufacture because of the need for special purpose equipment.
The aim of the present invention is to provide t method of manufacturing seamless ribbon which method does not require the use of expensive equipment.
The invention provides a method of manufacturing an endless seamless ribbon comprising preparing a sheet of ribbon material with a thickness equal to the desired thickness of the ribbon, and then cutting the sheet into a number of endless seamless ribbons.
Prefertably, the sheet of ribbon material is circular in shape and is cut by means of concentric cute into a series of circular ribbons.
Preferrably, the cutting is effected by mounting the device on a turn table and rotating the turn table past an array of radially equally spaced cutting devices.
The invention also provides apparatus for use in carrying out the method, comprising a turn table on which a disc of ribbon material may be mounted and rotated, and a series of radially equally spaced cutting devices for cutting the disc of material when the turn table is rotated.
The invention will now be described more particularly with reference to the accompanying drawings which show, by way of example only, one preferred construction of apparatus for use in carrying out the method. In the drawings Figure 1 is a plan view of the apparatus; and Figure 2 is an elevation of the apparatus.
The apparatus comprises a base 1, a turn table 2 mounted on the base, and a series of hot knives 3 mounted on a heating element 4 in the form of a boom which extends along a radius of the turn table, Zn operation, a disc of ribbon material (not shown) having a thickness equal to that desired in the finished ribbon is mounted on the turn table 2. The heating element 4 is switched on and when the knives 3 have reached the desired temperature the turn table is rotated and the result is a large number of endless concentric seamless ribbons.

Claims (6)

CLATMS
1. A method of manufacturing an endless seamless ribbon comprising preparing a sheet of ribbon material with a thickness equal to the desired thickness of the ribbon, and then cutting the sheet into a number of endless seamless ribbons.
2. A method according to claim 1 in which the sheet of ribbon material is circular in shape and is cut by means of concentric cuts into a series of circular ribbons.
3. A method according to claim 2 in which the cutting is effected by mounting the device on a turn table and rotating the turn table past an array of radially equally spaced cutting devices.
4. Apparatus for use in carrying out the method of claim 3, comprising a turn table on which a disc of ribbon material may be mounted and rotated, and a series of radially equally spaced cutting devices for cutting the disc of material when the turn table is rotated.
5. A method of manufacturing an endless seamless ribbon, substantially as herein described with reference to the accompanying drawings.
6. Apparatus for use in manufacturing an endless seamless ribbon, substantially as herein described with reference to and as shown in the accompanying drawings.
GB9014433A 1990-06-28 1990-06-28 A method of and apparatus for making endless ribbons Withdrawn GB2245857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9014433A GB2245857A (en) 1990-06-28 1990-06-28 A method of and apparatus for making endless ribbons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9014433A GB2245857A (en) 1990-06-28 1990-06-28 A method of and apparatus for making endless ribbons

Publications (2)

Publication Number Publication Date
GB9014433D0 GB9014433D0 (en) 1990-08-22
GB2245857A true GB2245857A (en) 1992-01-15

Family

ID=10678373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9014433A Withdrawn GB2245857A (en) 1990-06-28 1990-06-28 A method of and apparatus for making endless ribbons

Country Status (1)

Country Link
GB (1) GB2245857A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273105A (en) * 1926-07-08 1927-06-30 Henry Bowen Blandford Improvements in devices for cutting washers from sheet material
GB620272A (en) * 1946-01-16 1949-03-22 Gunnar Maby Improvements in or relating to punching tools
GB1216118A (en) * 1968-09-13 1970-12-16 Norman Hossack An improved tool for cutting gaskets or sealing rings from sheet material
GB1510230A (en) * 1974-12-31 1978-05-10 Transform Verstaerkungsmasch Cutter for cutting soft materials
GB1540240A (en) * 1976-08-10 1979-02-07 Lockwood R Cutter for cutting out profiles from sheet material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273105A (en) * 1926-07-08 1927-06-30 Henry Bowen Blandford Improvements in devices for cutting washers from sheet material
GB620272A (en) * 1946-01-16 1949-03-22 Gunnar Maby Improvements in or relating to punching tools
GB1216118A (en) * 1968-09-13 1970-12-16 Norman Hossack An improved tool for cutting gaskets or sealing rings from sheet material
GB1510230A (en) * 1974-12-31 1978-05-10 Transform Verstaerkungsmasch Cutter for cutting soft materials
GB1540240A (en) * 1976-08-10 1979-02-07 Lockwood R Cutter for cutting out profiles from sheet material

Also Published As

Publication number Publication date
GB9014433D0 (en) 1990-08-22

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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)