DE2059283A1 - Belt guiding and stretching device - Google Patents

Description

47 313

Alexeff-Snyder Enterprises Inc., 13000 Triskett Road OLEVELAM), Ohio 44111 (USA)

Tape guiding and stretching device

The invention relates to certain improvements in tape guides and -stretching devices for holding strip or strand material in the middle of a material processing line serve, the material side edges depending on. Requirement to be subjected to some elongation by placing one in the A single stretch roller positioned near each side edge of the tape is used.

Individual stretch rollers are of course already used to control and guide strip material, such as B. Tire fabric material, has been used when moving through a machining line. For this purpose, reference is made to, for example U.S. Patent 3,414,954 which teaches a single stretch roller describes near each side edge of the tape the angular orientation of which to enlarge and reduce the

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Angle of contact or looping of the strip material on the Roll is adjustable as required by the amount of lateral movement required by the tape material. In this patent, the angular adjustment is preferably enabled by attaching each stretch roller so that whose inner end, which is closest to the center line of the strip material, during the vertical movement of the outer one End in the direction of and from the adjacent tape side edge away remains essentially stationary. This has the advantage that the attack of the role on the strip material is always on the Side edge, where the stretching and guiding is most likely to be required, is greatest and toward the belt centerline progressively decreases. The present invention is concerned with various other devices by which the movements the stretch rollers can be controlled to ensure the necessary guidance and stretching of the strip material.

The tape guiding and stretching device according to the invention, is characterized by a pair of roller sets for controlling the edge position of the roller sets passing between the roller sets Band material, each of the roller sets having an expansion roller held by a shaft and a pivotable support lever for one end of the shaft, causing a displacement of the stretch roller towards and from the plane of the band material is enabled away to the angle of attack of the stretch roller on the band material in the vicinity of its side edge to reduce or enlarge, by a relatively fixed support member for the other end of the shaft and provided at the ends of the shaft, spherically adjustable spherical bearings, which an angular movement of the shaft during allow the movement of the pivotable support lever and the end of the shaft supported by it.

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As will be described in more detail below, there is an end the stretching roller for the device according to the invention preferably mounted on a pivot lever for raising and lowering the roll in and out of contact with the strip material, while the other end of the roller is either free to move or is relatively fixed with the exception of angular movement. One end of the rollers can also be laterally movable relative to the other end in order to adjust the helix angle of the rollers to be able to.

In another embodiment of the device according to the invention For example, the entire frame carrying the rollers can be pivotably mounted about an axis running perpendicular to the normal path of movement of the strip material, for an adjustment allow the helix angle of the rollers, and the vertical position of the rollers in the frame can also be relative be adjusted to the tape material in order to vary the engagement of the rollers on the tape material.

The invention is explained in more detail in the following description of several exemplary embodiments in conjunction with the drawing explains, namely shows:

Fig. 1 is a plan view of a preferred embodiment of the tape guide and tape according to the invention -stretching device;

Pig. 2 shows a front view of the device according to FIG. 1, as they move from the plane determined by the line 2-2 in the direction of belt movement represents;

FIG. 3 shows a side view of the device according to FIG. 1 along line 3-3 on the right side of the tape;

Fig. 4 is a front view of a modified embodiment

management form of the tape guide and stretching device according to the invention;

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Fig. 5 is a plan view of the device according to

Fig. 4, with parts of the support frame for the rollers broken away;

FIG. 6 shows a partial cross section through one of the bearing blocks of the device according to FIG. 5 the line 6-6 in that figure;

7 shows an enlarged partial longitudinal section through the mounting of the inner ends of the rollers of the figures 4 and 5 p

Fig. 8 is a front view of a further embodiment of a tape guide and tape according to the invention -stretching device;

FIG. 9 shows a plan view of the device according to FIG. 8;

Fig. 10 is a side view of the device of Fig. 9 as seen from the plane indicated by the line 10-10 on the left side of the strip material;

11 shows a plan view of a further embodiment of the tape guide and tape guide according to the invention -stretching device;

FIG. 12 is a side view of the device according to FIG viewed in the direction of line 12-12 on the right hand side of the strip material;

13 shows a partial longitudinal section through the storage of a the stretch rollers of Figure 11, along the line 13-13; and

14 is an enlarged vertical section through the pivotable mounting of the main frame of The apparatus of Figure 11, taken along line 14-14.

In Figures 1 to 3 is an embodiment of the invention Tape guiding and stretching device 1 is shown, which preferably has one in the vicinity of each side edge 3 of the tape material 4 has arranged roller set 2, only one of these roller sets 2 is shown, since the other one is identical Can have structure. The supporting body 5 of each roller set can, in order to this within a material treatment line

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to be placed correctly on a suitable support member 6, e.g. B. a profile iron at any point in its longitudinal extension screwed or otherwise "fastened. Preferably, each roller set lies in the direction of belt movement slightly above a stationary guide roller 8 in the material treatment line in order to work with this in an im to cooperate in the following way to be described. A support component 9 is pivotable on the support body 5 of the roller set 2 attached, which carries one end of a shaft 10 on which an expansion roller 11 is rotatably mounted. The pivot axis 12 of the support component 9 lies in a plane lying essentially parallel to the plane of the strip material and extends transversely to the strip material, while the shaft 10 for the stretching roller 11- at a high angle relative to the plane of the strip material stands, so that the inner end 15 of the expansion roller 11 is a greater distance from the plane of the strip material has, as its outer end 16, whereby the pressure of the stretch roller 11 on the band material, when the supporting component 9 is pivoted so that the stretch roller 11 rests against the band material, greatest at the side edge 3 is where the stretch is most likely needed while moving towards the band centerline progressively diminishes.

The shaft 10 is, as can be seen from Fig. 1, also in The direction of movement of the tape is slightly inclined, which is required is to cause an outward movement of the tape material, when the stretch roller is moved in the manner just described to rest against the belt. The helix angle determines the maximum distance the material can move outwards and the strength of the pressure of the stretch roller on the strip material determines the size of the frictional forces that are required to μα the side edges in a desired position to keep the stretch roller. If the tape material is below sufficient Tension is maintained, no additional rollers are required to achieve the necessary contact or looping

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Angle of the strip material to get the stretch roller to adjust the edge pitch. For practical reasons but generally one or two stationary roles in close proximity Arranged near the stretch rollers 11, umpfas tape material when it is touched by the stretch rollers. One of these roles can be the stationary one mentioned above Be guide roller 8, their arrangement in the vicinity of the expansion roller by precise alignment of the roller set 2 on the Support member 6 can be adjusted. A second stationary roller 18 is preferably on top of that of the stationary roller 8 opposite side of the expansion roller 11 mounted on a shaft 19 attached to the support body 5 of the roller set 2, so that the stretch roller 11 can move between these stationary rollers.

These movements of the stretch roller 11 can be controlled by a Mambran pneumatic cylinder or another actuating device 21 can be controlled on the support body 5 of the roller set is attached, and the piston rod 22 on the pivotable support member 9 via a first pivotable on a stationary Support bracket 24 mounted lever 23 and a second lever 25, the opposite ends of which on the first lever or attached to the pivotable support member, is connected. The actuation of the cylinder 21 can be carried out by an edge sensor be controlled, the one on the supporting body of the roller set so is attached so that it engages the nearest edge of the tape material. The edge sensor 26 is preferably designed as a pneumatic contact sensor, but it is obvious that other types of sensor can also be used can find.

In the embodiment according to FIGS. 1 to 3, the stationary rollers 8 and 18 are shown so that their axes of rotation extend essentially perpendicular to the path of movement of the strip material, whereby only the stretching roller 11

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exerts a limited stretching force on the strip material edges, when the stretch roller is brought into contact with it. It is clear, however, that the stationary oars are also inclined can to increase the amount of stretching force if desired. *

In the figures 4 to 7 a modified embodiment of a tape guiding and stretching device 30 is shown, which, as before, has two sets of rollers 31, one of which is used to control the longitudinal position of each side edge of the Band material is used. Instead of a special framework for however, each set of rollers is a single frame 32 for both Roll sets are provided, which extends over the full width of the tape material 4.

Each roller set can consist of a relatively fixed guide roller 33-UI ¹ Ci of a movable stretch roller 34, which can be brought into and out of contact with the strip material. to increase and decrease the contact or wrap angle of the strip material around the rollers between which it passes. The relatively fixed guide roller 33 is similar to the movable stretching roller 34 of each roller set 31, preferably inclined, in order to increase the stretching force exerted by the rollers on the side edges of the band material for a given size of wrap around the band material.

The setting of the helix angle of the fixed guide rollers 33 can be made by supporting one end of its associated shafts 35 in the center of the frame 32 and securing it of the other end of the shafts take place on laterally displaceable plates 38 which are in stationary guides 39 are guided in the vicinity of the opposite longitudinal edges of the strip material to a limited lateral displacement of the outer end of the guide rollers 33 relative to their

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allow inner ends. For the ends of shafts 35 For example, the spherically adjustable joint bearings 40 shown in detail in FIG. 7 can be provided to allow angular movement of the shafts while adjusting the helix angle to enable. On the stationary frame 32 there can also be a hand wheel 41 for driving one in threaded engagement with the plates 38 standing screw spindle 42 may be provided to allow manual adjustment of the helix angle of the guide rollers 33 au received.

The inner ends of the shafts 36 for the stretch rollers 34 can also be mounted in the center of the frame 32 in spherical pivot bearings 40 in order to adjust the helix angle of the expansion rollers during the lateral displacement of the outer ends of the shafts together with the movable ones Plates 38 to allow. However, the outer ends of the expansion roller shafts 3.6 are not fastened directly to the plates 38 like the outer ends of the shafts 35 of the guide rollers. Instead, on each of the laterally displaceable plates 38 a pivoted lever 43 is provided, and the outer ends of the shafts 36 of the stretch rollers are spherical using Pivoting bearings 40 connected to such levers to adjust the angle of attack of the expansion rollers 34 relative to allow the side edges of the tape material. The piston rods 45 are pivotable at each end of the main frame 32 Mounted pressure medium cylinders 44 can be connected to the pivotable levers 43 in order to achieve the desired movements to generate the stretch rollers. During these movements of the outer ends of the shafts 36 of the stretch rollers towards the and away from the strip material, the inner ends of the shafts 36 remain with the exception of one through the spherical pivot bearings 40 enabled angle adjustment relatively fixed, whereby the pressure of the stretch rollers 34, on the strip material on its side edges is strongest in each case and progressively diminishes in the direction of the belt centerline. To control the

"The pressure medium cylinder 44 can work in a known manner Edge sensors not shown can be used to increase the angle of attack according to the requirements and to reduce and thereby to control the edge position of the strip material during the longitudinal movement.

Figures 8 to 10 show a further modified embodiment a tape guiding and stretching device 46, which the embodiment according to Figures 4 to 7 essentially is similar, with the exception that instead of one guide roller, two relatively fixed guide rollers 47 »48 49 are provided for each roller set. The stretch roller 50 each roller set 49 is arranged between these guide rollers 47i 48 and one end of the stretching roller 50 is movable in the direction towards and away from the strip material by the angle of attack of the rollers on the associated edges of the one running between the guide rollers 47, 48 and the stretching roller 50 To enlarge and reduce tape material. Preferably all of the rollers 47, 48 and 50 extend over the whole Width of the tape material and not just over about half as in the exemplary embodiment according to FIGS. 4 to 7, to the To facilitate storage of the ends of the roller shafts. Of course, the roles of each roller set only attack one side edge of the tape material, and all rolls each Roll set are preferably inclined to adjust the edge position of both longitudinal edges of the strip material.

Adjusting the helix angle of rollers 47, 48 and each roller set 49 is made possible by slidable ones Plates 51 for the shafts of the rolls, which are inserted in guides 52 near the opposite side edges of the strip material. One end of the shafts 53, 54 and 55 of each roller set 49 is rotatable in one of the plates 51 using suitable spherical pivot bearings 56

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stored, making an angular adjustment of the shafts during the lateral displacement of one end relative to the other is made possible. To drive with the associated Slidably displaceable plates 51 screw spindles 48 in thread engagement, handwheels 57 can be provided, to manually adjust the helix angle of the rollers to obtain.

The other ends of the shafts 53, 54 of the guide rollers are relatively stationary with the exception of an angular movement, wherein the angular movement is made possible by spherical pivot bearings 56 which attach these other ends of the shafts to bearing plates 59 are connected to roller set housings 60. However, the other ends of the shafts 55 of the stretch rollers are - as well using * spherical pivot bearings 56 - arranged in pivoted levers 61 for lifting and lowering of the respective ends of the stretch rollers towards and away from the associated side edges of the strip material to facilitate, and thus to increase the angle of attack of the expansion rollers on the associated side edges of the strip material and to be reduced in size. Pressure medium cylinders 62 connected to the associated levers 61 in a suitable manner (see FIG. 10) for the shafts 55 of the stretch rollers control their position as a function of signals from edge sensors 62a, as shown in FIG Prior art is known. The setting of the roller sets 49 on a side edge can be done by shifting the respective Roll set can be achieved along a head carrier 63 which runs across the strip treatment line.

FIGS. 11 to 14 show yet another embodiment of a tape guiding and stretching device according to the invention shown, which a first, extending transversely over the entire width of the strip material 4, substantially perpendicular at its edges arranged guide roller 66, which rests against one side of the strip material. Next is one

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a single stretch roller 67 near each side edge of the strip material provided, which engages on the opposite side of the tape material and is about to move in tape movement direction the guide roller 66 is seated. Preferably, both the helix angle and the angle of attack of the stretch rollers 67 are in suitably set firmly, with a spherically adjustable, nuts and washers having adjusting device 68 for fastening the outer ends of the shafts 69 of the expansion rollers to the main frame 70 of the device 65 use finds. A slot-shaped opening 71 can be provided in the main frame 70 for each shaft 69 of the expansion rollers in order, as in FIG Fig. 13 is shown to allow a limited adjustment of the attack of the stretch rollers 67.

The ends of the shafts 72 of the guide roller are also preferably attached to the main frame 70 of the device, with no means for a separate adjustment "their Helix angles are provided. One with the first fun Guide roller 66, essentially identical second guide roller 73, can also be mounted on the main frame 70 of the device in the direction of belt movement be arranged behind the first guide roller to the contact or wrap angle of the between to enlarge the tape material passing through the guide rollers 66, 73, as is clearly shown in FIG.

Although the positions of the stretch rollers 67 and the guide rollers 66, 73 in operation relative to the main frame 70 of the device are relatively fixed, the main frame may have a central pivot pin 74 which is perpendicular to the main plane of the Band material and stands on its center line to a pivoting movement of the main frame and thereby a pivoting movement to enable the stretch rollers and guide rollers held by this. This pivoting movement takes place through Actuation of a connected to the main frame 70 in a suitable manner, for example by a lever mechanism 76

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Fluid cylinder 75. The actuation of the fluid cylinder ' Ders 75 may, in a known manner, be made by a pair of near the opposite side edges of the strip material arranged edge sensors 77 are controlled. If the tape material is deflected and overstretched on one side, causes the pressure medium cylinder 75 to pivot the main frame 70 in a direction in which the guide rollers 66, 73 are slightly inclined in the opposite direction in order to return the band material to the central position. At the same time, the helix angle of the stretch roller 67 decreases in the vicinity of such a side edge of the strip material light, whereby the stretching at this side edge is slightly reduced, while the helix angle of the stretching roller 67 on the opposite side edge of the strip material is slightly larger, so that a greater stretch on the other edge takes place, etc.

From the foregoing it is clear that different Embodiments of the disclosed tape guiding and stretching devices the tape material during its longitudinal movement guide in the middle of a treatment section, while a desired stretch on the side edges of the strip material he follows. The helix angle of one or more rollers of each roller set can be changed as desired, in order to vary the maximum permissible elongation of the strip material in the vicinity of the edge, and the angle of attack or wrap angle the tape material around the rollers can also be adjusted by raising and lowering the stretch rollers in the direction of on and off the web to maintain fabric edge position.

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Claims (17)

Claims 1. Tape guiding and stretching device characterized by eir Pair of roller sets (yß'i; 49) for controlling the edge position of tape material running between the sets of rolls (4), each of the roller sets (31; 49) having a first stretch roller (34; 50) supported by a shaft (36; 55) as well as a pivotable support lever (43; 61) for one end of the shaft, whereby a displacement of the expansion roller (34,50 in the direction of and away from the plane of the strip material (4) is made possible in order to reduce the angle of attack of the rotating roller (34 » 50) to reduce or enlarge the strip material (4) in the vicinity of its side edge; by a relatively fixed the support member for the other end of the shaft (36; 55); and by means of spherically adjustable pivot bearings (40) provided at the ends of the shaft (36; 55), which enable angular movement of the Allow shaft during the movement of the pivotable Uraghebels (43; 61) and the end of the shaft supported by this 2. Apparatus according to claim 1, characterized by a device for adjusting the helix angle of the stretch roller (34; 50) with a laterally displaceable plate (38; 51) / guides (39; 52) for the displacement movement of the plate by means of securing the pivotable drag lever (43; 61) on the plate so that it is displaced with it will. 3. Apparatus according to claim 2, characterized in that a screw spindle (42; 58) for adjusting the position the sliding plate (38; 51) is provided. 109844/1537 4. Apparatus according to claim 2 or 3 »characterized in that that a second by a second shaft (35; 53) supported roller (33 »47) is provided, one end of which is in the displaceable Plate (38; 51) is supported and at the same time displaceable with this, and the other end with the exception an angular movement is relatively fixed » 5. Device according to one of claims 1 to 4, characterized in that that the pivotable support lever (43) is in the vicinity of a side edge of the strip material (4) and the fixed support member in the area between the side edges of the strip material is arranged, and that the length of the expansion roller (34) and the shaft (36) are therefore dimensioned so that they are between the The support lever (43) and the support component fit. 6. Apparatus according to claim 5, characterized in that the second set of rollers (31) also has one of a shaft (36) supported stretching roller (34) arranged in the vicinity of the opposite side edge of the strip material (4) and one pivotable support lever (43) for one end of the shaft (36), whereby a displacement of this Dahnrolle (34) in the direction of and away from the plane of the strip material is made possible by the angle of application of the stretch roller on the strip material to enlarge and reduce in the vicinity of its associated side edge and that a fixed one common support component for the other ends of the shafts (36) of the expansion rollers (34) of the first and the second roller set (31) is provided in the area between the side edges of the strip material (4), the lengths of the expansion rollers (34) of the first and second roller sets (31) are approximately equal to half the width of the strip material (4). 7. Apparatus according to claim 6, characterized by a common extending over the full width of the strip material (4) Frame (32) for the roller seeders (31), between dessefi End portions of the common support member is supported. 109844 / 1S37 8. Device according to one of claims 1 to 4, characterized in that that the pivotable support lever (61) is arranged in the vicinity of a side edge of the strip material (4), and that the length of the expansion roller (50) and the associated shaft (55) is therefore greater than the width of the strip material (4). 9. Apparatus according to claim 8, characterized in that in the vicinity of the opposite side edges of the strip material (4) Housing (60) for the pivotable support lever (61) and the relatively fixed support component (59) and itself Head supports (63) extending across the strip material are provided are along which the housing φ) for adjustment of the roller set (49) can be displaced onto the side edges of the strip material (4). 10. Apparatus according to claim 8 or 9 characterized by second and (Ütte, on opposite sides of the stretch roller (50) arranged shafts (53,54) supported rollers (47, 48), each end of the shafts (53,54) being relatively fixed, while her other end is formed laterally movable to adjust the helix angle of all Enable roles. 11. The device according to claim 1, characterized by a device for fastening the relatively solid support member in such a way that it enables the helix angle to be adjusted the stretch roller can perform a limited lateral displacement. 12. The device according to claim 1, characterized in that each roller set of the pair of roller sets (2) for control the edge position of the strip material (4) running between them, an expansion roller held by a shaft (10) (11) and a device (9,23,24,25,21) for such attachment of one end of the shaft (10) that this one movement towards and from the plane of the strip material in 109 8 4 4/1 537 the closer ssen side edge can run away to the angle of attack the expansion roller (11) to enlarge or reduce the band material, and that the device for fastening the shaft has a pivotable support member (9) for one end of the shaft (10), a first pivotably attached Lever (23), a second lever (25) which is pivotably connected at its ends to the first lever (23) or the supporting component (9) and an actuating device (21), the actuating rod (22) of which is connected to the first lever (23). 13. The device according to claim 12, characterized by a length of the strip material treatment path along a Lateral edge of the strip material (4) extending support member (6) for the roller set (2), one in the strip treatment line provided stationary guide roller (8) and by a support body (5) for such attachment of the roller set (2) on the Support member (6) that the expansion roller can be precisely aligned relative to the stationary guide roller (8). 14. The device according to claim 13 »characterized in that the roller set (2) has a v / additional stationary guide roller (18) has, which is on the first stationary guide roller (8) opposite side of the expansion roller (11). 15. Device according to one of claims 1 to 14, characterized in that that they have a common main frame (70) for a pair of roller sets (2,31,49) with a central, vertical standing on the main plane of the strip material (4) and on the center line of the strip material treatment section Pivot pins (74) and devices (75,76) for pivoting of the main frame (70) in a direction dependent on the lateral movement of the strip material (4), around the To vary the helix angle of each roller set and thus a lateral movement of the strip material in the opposite direction. 1 0 9 8 A A / 1 5 3 7 - ■ 1.7 - 'to cause the tape material centered on the Band material treatment line is held. 16. The device according to claim 15, characterized in that das.Paar of EoIlensatζen each have an expansion roller (67) which is very sawed in the direction of movement of the strip material and is also arranged at such an angle that it increase progressively in sighting of the associated side edges the band material (4) presses in. 17. Apparatus according to claim 16, characterized in that the holster sets at least one additional guide roller (66) have, which are located in the direction of belt movement above the stretch rollers and in the vicinity thereof extends across the entire width of the strip material (4) and from the main frame (70) with it this is pivotally supported. 109844/15 37