GB1272817A - Web tension control system for use with a web unwind stand - Google Patents
Web tension control system for use with a web unwind standInfo
- Publication number
- GB1272817A GB1272817A GB44756/69A GB4475669A GB1272817A GB 1272817 A GB1272817 A GB 1272817A GB 44756/69 A GB44756/69 A GB 44756/69A GB 4475669 A GB4475669 A GB 4475669A GB 1272817 A GB1272817 A GB 1272817A
- Authority
- GB
- United Kingdom
- Prior art keywords
- web
- roll
- splicing
- rollers
- unwinding
- 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.)
- Expired
Links
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
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
- B65H19/1857—Support arrangement of web rolls
- B65H19/1868—The roll support being of the turret type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
- B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
- B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
- B65H19/1831—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll the replacement web being stationary prior to splicing contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/46—Splicing
- B65H2301/463—Splicing splicing means, i.e. means by which a web end is bound to another web end
- B65H2301/4631—Adhesive tape
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Replacement Of Web Rolls (AREA)
- Unwinding Webs (AREA)
Abstract
1,272,817. Feeding webs. F.M.C. CORP. 10 Sept., 1969 [17 Sept., 1968], No. 44756/69. Heading B8R. A web unwind stand comprises a frame in which are rotatably mounted a pair of turret arms 62, (61) Fig. 2 (not shown) for supporting a first roll 66 in a position for unwinding a web therefrom in a counter-clockwise sense, as shown, or in a clockwise sense (Fig. 4, not shown) and for supporting a second roll 64 in a standby position, and a plurality of splicing rollers 49, 51, 57 mounted between pivoted brackets 41, (43) for movement between splicing a web unwinding in a counterclockwise sense to a position for splicing a web unwinding in a clockwise sense. As shown, when the running roll 66 approaches exhaustion an operator gives a pull-start to the standby roll 64 so that the leading end of the new web 67, prepared with an adhesive strip 68, drops vertically between the splicing rollers 57, 49 and contacts the expiring web. Pneumatic cylinders 53, (55) are then actuated so that nip pressure is applied to the splice in two places, between rollers 57 and 49, and between rollers 57 and 51. If the running roll has to be unwound in a clockwise sense a lock 45 is disengaged and the brackets 41, (43) are pivoted into a second position where the lock 45 can engage within a hold 47, and the arms 62, (61) are suitably positioned (Fig. 4, not shown) so that the same procedure as described above can be followed when it is desired to make a splice. The unwind stand may form part of an installation (Fig. 1, not shown) including a printing station, a drying oven, and a rewind stand, and it is provided with a control system to maintain the in-feed web tension constant. This tension control system includes first and second pneumatic brakes (75), (76) Fig. 2, (not shown) interconnected with the core shaft of the running roll to apply braking torque thereto under the control of signals derived from a tension sensing dancer roller (22) Figs. 1, 5 and 6 (not shown), the arrangement being such that brakes (75), (76) are both energized at the start of a full roll, but only brake (75) being effective later in the unwinding process. Electric brakes may replace the pneumatic brakes (75), (76) and a load cell type of sensing roller may be used instead of the dancer roller (22).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76032968A | 1968-09-17 | 1968-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1272817A true GB1272817A (en) | 1972-05-03 |
Family
ID=25058772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB44756/69A Expired GB1272817A (en) | 1968-09-17 | 1969-09-10 | Web tension control system for use with a web unwind stand |
Country Status (4)
Country | Link |
---|---|
US (1) | US3528620A (en) |
DE (2) | DE1938814B2 (en) |
FR (1) | FR2018238A1 (en) |
GB (1) | GB1272817A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2837493A1 (en) * | 1978-10-11 | 1980-03-20 | Sam Ahmad | ROLLER STAND, ESPECIALLY FOR PRINTING MACHINES |
DE3437815A1 (en) * | 1984-10-16 | 1986-04-17 | Maschinenfabrik Goebel Gmbh, 6100 Darmstadt | DEVICE FOR CONTROLLING THE TENSION IN A TRAIN |
US4832272A (en) * | 1988-08-08 | 1989-05-23 | Milliken Research Corporation | Laminator unwind roll stand |
US4944470A (en) * | 1988-08-08 | 1990-07-31 | Milliken Research Corporation | Laminator unwind roll stand |
GB2388397A (en) * | 2002-04-17 | 2003-11-12 | Eclipse Blinds Ltd | Apparatus and method for production of roller blinds |
EP2857197B1 (en) | 2013-10-07 | 2016-03-16 | Comexi Group Industries, S.A.U | Central impression drum printing machine |
ES2573815T3 (en) | 2013-10-07 | 2016-06-10 | Comexi Group Industries, S.A.U | Central printing drum printing machine for printing radiation curable inks |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2472548A (en) * | 1945-02-24 | 1949-06-07 | Wagner Electric Corp | Automatic tensioning device for reels |
US2869684A (en) * | 1954-08-05 | 1959-01-20 | Burroughs Corp | Tape feeding system |
NL279891A (en) * | 1960-05-18 |
-
1968
- 1968-09-17 US US760329A patent/US3528620A/en not_active Expired - Lifetime
-
1969
- 1969-07-30 DE DE19691938814 patent/DE1938814B2/en active Pending
- 1969-07-30 DE DE6930192U patent/DE6930192U/en not_active Expired
- 1969-09-10 GB GB44756/69A patent/GB1272817A/en not_active Expired
- 1969-09-11 FR FR6930993A patent/FR2018238A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2018238A1 (en) | 1970-05-29 |
DE1938814B2 (en) | 1971-10-07 |
US3528620A (en) | 1970-09-15 |
DE6930192U (en) | 1973-08-23 |
DE1938814A1 (en) | 1970-11-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |