US2752657A - Guiding device for webs - Google Patents

Description

July 3, 1956 P. MENEO 2,

GUIDING DEVICE FOR WEBS Filed Dec. 29, 1954 2 Sheets-Sheet 1 INVENTOR PGSQUGIG Meneo BY MJAMA ATTORNEYS July 3, 1956 P. MENEO 2,752,657

GUIDING DEVICE FOR WEBS Filed Dec. 29, 1954 2 Sheets-Sheet 2 INVENTOR Pasquale Meneo BY WJM ATTORN E Y5 GUIDING DEVICE FOR WEBS Pasquale Meneo, Harnden, Conn, assignor to The Beaver Pond Machine Company, New Haven, Conn., a corporation of Connecticut Appiication December 29, 1954, Serial No. 478,448 2 Claims. (CI. 2665) This invention relates to guiding devices for webs and relates more particularly to devices for expanding and guiding webs of cloth or the like during their travel in certain textile-finishing operations, so as to inhibit the formation of folds, puckers, or pleats in the cloth.

One object of the invention is to provide an improved guiding device for expanding and controlling webs of cloth or the like.

Another object of the invention is to provide a guiding device such as characterized above, having means operable to expand a moving web of cloth, for example, and having supplemental means for controlling the moving web when the cloth is not being expanded.

Still another object of the invention is to provide a web-guiding device of simple construction having few and rugged parts and which is economical to manufacture.

In the accompanying drawings:

Fig. 1 is an elevational view illustrating a fragment of a web of cloth or the like and illustrating a pair of my guiding devices acting on the respective side edge portions of the web;

Fig. 2 is an enlarged view of the right-hand guiding device shown in Fig. 1;

Fig. 3 is an end view of the guiding device shown in Fig. 2; and

Fig. 4 is a sectional view taken on line 44 of Fig. 2 and on a larger scale, further illustrating certain details of the web-guiding device.

In Fig. l of the drawings, the web is indicated at and is wound on a roller 11 driven in any suitable manner, not shown. One of the web-guiding devices is indicated generally at 12 and the other web-guiding device is indicated at 13. As the guiding device 12 is constructed as the mirror image of the device 13, a description of the device 13 will sufiice.

As shown in Figs. 2 and 3, the web-guiding device 13 has a frame 14 carrying a fixed roller 15 at one side of the web 16 and a movably mounted roller 16 at the other side of the web, the arrangement being such that the web may be pinched between the roller 15 and the roller 16. The frame 14 is supported by a stub shaft 17 in fixed relation thereto and received for swiveling movement in a boss 18 of a suitable supporting member. A set screw 19 may be provided in the boss 18 to secure the shaft 17 in various angular positions so that the co-planar axes of the rollers 15, 16 may be angularly adjusted with respect to the plane in which the web travels to increase or decrease the tendency of the nipping rollers 15, 16 to expand the web in accordance with principles well known in the art.

The fixed roller 15 is mounted for rotation on a shaft 20 received in a boss 21 integral with the frame 14. The nipping roller 16 is mounted on a shaft 22 parallel to the shaft 20. The shaft 22 is mounted in a U-shaped yoke 23 pivoted to the frame 14, as at 24, and having a portion 25 thereof cooperating with a plunger 26 actuated by air pressure to move the roller 16 toward the roller 15. A helical spring 27 is provided coacting with the States Patent 9 2,752,657 Patented July 3, 1956 pivot 24 and the yoke 23 in a conventional manner to urge the roller 16 away from the roller 15.

A conventional valve 28 is interposed in the air-line 29 intermediate the plunger 26 and the air source, not shown, the valve 28 being actuated by a conventional feeler 30 spring-biased in a direction to open the valve 28 and engageable by the adjacent edge portion of the web 10. The construction and arrangement of the nipping rolls 15, 16, the yoke 23, the air-actuated plunger 26, the valve 28, and the feeler 30 is well known in the art, and for this reason, no further explanation of these elements of the web-guiding device is deemed necessary.

As shown in Fig. 2, the frame 14 is provided with a fixed extension 31 laterally of the roller 15, and a supplemental frame 32 is provided in pivotal relation to the extension 31. The supplemental frame 32 is generally of U shape. As shown in Fig. 4, the arms of the U-shaped frame 32 carry a fixed roller 33 at one side of the web 10 and a roller 34 at the other side of the web spring-biased toward frame 32 is of longer length than the arm 36 and is provided with a slot 37 intermediate the ends thereof communicating with a bore 38 extending from one end of the arm 35. 35 supports a laterally extending shaft 39 on which the fixed roller 33 is rotatable. The arm 36 of the frame is provided with a slot or recess 40 formed in the distal end thereof and communicating with a bore 41 extending from the other end of the arm 36. The arms 35, 36 of the frame are interconnected by the frame portion 42 welded to the arms. The slots 37, 40 of the arms receive the ends of a shaft 43 on which the roller 34 is rotatably mounted, the shaft 43 being mounted in the slots 37, 40 for movement lengthwise of the frame arms. The shaft 43 is provided with a washers may be disposed on the shaft 43 intermediate the The shaft 39 extends through roller 34 and the arm 35. the arm 35 and is provided with a flange 50 abutting one side of the arm 35. The other side of the arm 35 is abutted by a nut 51 threaded on the shaft 39 to prevent endwise movement of the latter. Each of the rollers 33, 34 may be provided with a suitable antifriction bearing structure; and, as shown in Fig. 4, the shaft 39 is provided with a threaded member 39 at the distal end thereof engaging the roller 33 to position the latter axially of the shaft 39. The supplemental frame 32 is pivoted to th frame 14 as at 52 and is provided with a clamping bolt 53 extending through an arcuate slot in the frame extension 31 to clamp the frame 32 to the extension 31 in the desired angularly adjusted position of the frame 32.

From the foregoing, it will be understood that when the axes of the nipping rollers 15, 16 of the guide 13 are inclined with respect to the web It as indicated in Fig. l, and the web is pulled downwardly by the driven roller 11, the rollers 15, 16 nip the web and tend to expand the latter until the right-hand edge of the web (see Fig. 1) engages the feeler 30 and moves the same in a direction to close the valve 28, thereby cutting olf the source of air pressure from the air-actuated plunger 26. When the valve 28 is closed, as described above, the nipping rollers 15, 16 move apart relatively to one another under the action of the spring 27, thereby releasing the web 10 so that the latter tends to contract sharply. This tendency,

the roller 33. The arm 35 of the Adjacent the other end thereof, the arm which may affect irregular turns of the web on the collection roller 11, is strongly inhibited by the supplemental rollers 33, 34 which maintain a constant grip on the web therebetween. Thus, when the nipping rollers 15, 16 of the guide 13 are inoperative, the supplemental rollers 33, 34, which have their axes disposed at right angles to the run of the web (see Fig. 2) to avoid lateral pull on the web by the rollers 33, 34, permit the web to contract slowly until the spring-biased feeler 30 moves to the position thereof in which the valve 28 is open. When the valve 28 is opened, as described above, the rollers 15, 16 nip the web and re-expand the latter.

Thus it will be seen that the supplemental rollers 33, 34 of the guiding device 13 slow movement of the right-hand edge of the web (see ,Fig. 1) toward the left when the nipping rollers 15, 16 are inoperative and, in addition, limit the extent of travel of the edge to the left by inhibiting snap in the expanded web. Hence, the web-guiding device 13 produces on the collection roller 11 web turns of greater uniformity. The right-hand edge of each turn is laid by the web-guiding device 13 substantially in alignment with the r ght-hand edge of the next lower turn on the collection roller.

It will also be understood that the swivel mounting of the frame-supporting shaft 17 permits angular adjustment of the nipping rollers 15, 16 to increase or decrease the tendency of the rollers 15, 16 to expand the web, and that the pivotal mounting of the supplemental frame 32 permits corrective angular adjustment of the rollers 33, 34 relatively to the nipping rollers 15, 16 so that, regardless of the inclination of the last-mentioned rollers to the run of the web, the supplemental rollers 33, 34 may have their axes at right angles to the run of the web. As mentioned above, the ends of the supplemental rollers 33, 34 nearest the center of the web are tapered, and it will be understood that said tapered ends of the rollers 33, 34 facilitate the entrance of the adjacent edge portion of the web between the supplemental rollers.

In accordance with the foregoing disclosure, there is provided, in a web-guiding device having a. pair of relatively movable primary rollers operative to nip a web therebetween to expand the same, a supplemental guide comprising an angularly adjustable frame supporting a pair of relatively movable web-gripping rollers controlling contraction of the web when the primary rollers are inoperative, so that the web may be wound more uniformly on a collection roller. Furthermore, there is provided a guide which will not easily get out of order. Another advantage of the guide resides in the flexibility of the device. Still another advantage of the guide resides in the simplicity and the ruggedness thereof, and in the low cost of manufacturing the same.

While only one form of the web-guiding device of the invention has been illustrated and described, it will be apparent that the device is susceptible of various modifications without departure from the principles of the invention and the scope of the claims.

What I claim is:

1. In a web-guiding device having a swiveling frame and a pair of relatively movable primary rollers journaled in the frame and operative to nip an edge portion of the web therebetween to expand the web, a supplemental frame generally of U shape having one arm thereof longer than the other arm, the arms of the supplemental frame being interconnected by a plate part supported from the first frame for angular adjustment on an axis parallel to the swiveling axis of the first-named frame, a fixed supplemental roller carried by the long arm of the supplemental frame, and a second supplemental roller intermediate said arms, said second supplemental roller being slidably mounted in the arms and spring urged in the direction of the first supplemental roller, the supplemental rollers constantly engaging the edge portion of the web therebetween and having their axes disposed at right angles to the web to inhibit contraction of the web when the nipping rollers are inoperative.

2. In a web-guiding device, a supporting member, a main frame supported from said member in swiveling relation, a first primary roller journalled in the frame, a second primary roller carried by the frame and mounted for movement toward and away from the first roller, means controlled by movement of the web for moving said second roller toward the first roller to nip the web between said rollers, spring means urging said second roller away from said first roller and operative to release the web when the first-named means is inoperative, said rollers having their axes inclined with respect to the center line of the web so that the rollers expand the web when in nipping engagement therewith, the frame being angularly adjustable on the swiveling axis thereof to increase or decrease the webexpanding tendency of said rollers, a second frame supported from the main frame, and a pair of supplemental rollers carried by the second frame, one of the supplemental rollers being spring-biased toward the other to constantly nip the web between the last-mentioned rollers, the supplemental rollers having their axes disposed at right angles to the center line of the web to inhibit contraction of the web when the latter is released by the primary rollers, the second frame being mounted on the main frame for angular adjustment of the second frame on an axis parallel to the swiveling axis of the main frame, so that the second frame may be angularly adjusted to compensate for angular adjustment of the main frame.

References Cited in the file of this patent UNITED STATES PATENTS l,54l,l Smith June 9, i925

Images