HU207259B - Roll stretching in the direction of width - Google Patents

Abstract

An expander roller has a covering (12) provided with inclined notches (15', 15a, 15b, 15c) of different depths.

Description

Scope of the description: 6 pages (including 1 page figure)

EN 207 259

The invention is a tape measure! refers to a roller for the direction of materials or raw materials, in the width direction.

DE-U 8 506 704 discloses a solution of a roller in the direction of the width in which the support shaft has a substantially cylindrical sheath-shaped wide stretch coating. An annular incision is provided from the covering surface of the width-stretch coating to the longitudinal center axis of the support shaft at an angle of 90 ° unevenly.

The roller can be used in a variety of applications, some of which are listed below:

paper industry, textile industry, plastic industry, leather industry and general machinery manufacturing.

In this case, the coating extending in the direction of the forming width is preferably made of natural rubber or other rubber material.

Known cylinders are essentially proven and surpass the so-called "banana rolls" in all respects. By this we mean the rolls that are banana-like! are formed by dividing the cylinders into customizable words. These rollers, if you tape! they may be formed by forming a substantially cylindrical surface.

While these banana cylinders are very demanding in terms of maintenance, cylinders known from DE-U 8,506,704 have no post-adjustment work. This avoids loss of production and time losses.

However, it has been shown that these cylinders still need to be refined, in accordance with the field of application, with particular regard to the width extensibility of the roller periphery. In addition, it is desirable to provide that the band-like materials passed through the roller should lie flat on the surface of the cylinder, which can only be partially achieved by ring-like incisions substantially parallel to the cylinders of the prior art known in the art.

The invention is based on. the recognition is that partial deflection of the lamellar sections formed between the incisions may occur during the deflation of the incised surface portions of the known cylinders, which, on the one hand, especially on sensitive products such as silk, on the surface of the cylinder, the unevenness formed by the compression of the rolled product is passed through and, on the other hand, stretching on the outer extremities is not always optimal.

The present invention therefore provides a guide roll for guiding the strips of material having a substantially cylindrical surface with a cylindrical surface which is substantially cylindrical, and in which ring-shaped incisions from the wrapping surface to the support axis start at between 1 ° and 89 °. at an angle to the median plane perpendicular to the support axis of the stretch coating, mirror-symmetrically toward one or the other end, such that at least one incision on one side of the width-stretching coating has a different incision depth relative to the other incisions.

The angle below which the incisions are to be made is, in one preferred embodiment, between 30 ° and 60 °, most preferably between 40 ° and 50 °.

The distribution of the cylinder with a mirror-symmetrical structure is right and left-handed because it is the only way to ensure that the material it drives is evenly left and right.

The depth of each incision can be adjusted depending on the particular application area. In one preferred embodiment, the notches close to each end of the stretch coating have a greater depth than the incisions near the stretch coating. Thus, the external incisions can be deformed more radially, in the axial direction, towards each free end, resulting in a more perfect effect of the roll on the material in this range.

This effect can be further improved if the open end of the incisions at the cover surface has a smaller opening width than the end of the support shaft. Thus, for example, the incisions may have a cross-section similar to the trapezoidal shape.

Thus, in this range, the gytlile lamellae present in this region are relatively displaced towards the corresponding end of the bearing shaft due to the force acting perpendicularly to the support axis, which is formed by the stretching force of the web on the wide stretching roller, and accordingly the stretching effect in this section is greater in width.

Along with the characteristics of the greater incision depth, the corresponding collar lamellae are longer, or slightly less solid at the base of the base, where the non-cut portion of the coating is continued, such as, for example, a parallelogram cross-section of the incisions, as this results in a thicker base for the respective lamellae. However, according to the field of application, such an embodiment is possible within the scope of the invention.

The different incision depths are aligned with the purpose of the cylinder. Thus, the invention proposes a stepwise increment of the incision depth, preferably toward the free ends of the cylinder, so that the stretching roll is divided into several cylindrical portions, so that each cylindrical section has a plurality of incisions of the same depth. However, it is particularly advantageous if the incision depth is the individual collar! always grow between the roller blades from the proximity of the roll to the right ends. The roller can then generally be used in accordance with the rules, particularly in areas where multiple parallel strips are to be conveyed simultaneously on the cylinder.

In a further preferred embodiment of the invention, the cylinder is such an embodiment

HU 207 259 Β is to consist of several sections corresponding to the number of tapes to be transmitted, so that each section corresponds to the cylindrical shape of the invention, thus having a mirror symmetric design of the incisions. Such cylinders then comprise a plurality of cylinders according to the invention inserted in a substantially axial direction.

In this way, it is possible to pull a wide one-piece strip in the direction of the cylinder and divide it into some strips just before the roller, for example by means of suitable knives. Then, each of the individual tapes, as described above, is transmitted here only by the appropriate cylindrical section, and also to the right and left.

For example, such "multiple" rollers are suitable for deflecting paper webs that are distributed to some paper strips shortly before the roll, which are then rolled onto a cardboard core, for example, to produce roll paper rolls.

In addition, it should be pointed out that the deformation of the cylinders in relation to the resistance of the roller can be further improved if the inclined middle surface of the stretch coating is between the closest and closest to the support axis, which means that the "medium incision depth" is about in the middle of the thickness of the stretch coating.

The features described above are characterized by a roller extending in width which, even in terms of its application properties, even exceeds the cylinder known from DE-U 8 506 704, because it exerts even better stretching force and is easier to fit into different application areas. In addition, with the roll of the invention, the desired purpose is advantageously achieved by smoothly guiding the guidewire through the roll, preferably in a cross-sectional embodiment with trapezoidal incisions, the cylindrical surface section of the annular ribs formed between the incisions after the deformation due to the conductive tape is approximately closed cylindrical surface. which is further described in the drawing.

This effect can be further enhanced, according to the material selected for the coating, by positioning the annular incisions relative to each other such that the incision extends sparsely towards the center of the cylinder so that the first end facing the center of the cylinder towards the center of the cylinder is in front of it. extends beyond the end of the groove facing the end of the cylinder, which is also described in more detail with reference to the drawing.

Further aspects of the invention are provided by the claims and other annexes.

The invention is illustrated in the following figures.

Figure 1 is a partial sectional view and side elevational view of a roller according to the invention

Fig. 2 is a detail of a cylinder with a plurality of individual tapes running parallel to each other.

As shown in Figure 1, the width-extending roller is generally referred to as reference (10). This consists of the support shaft (11) and a wide (12) stretch coating (12) attached to the site by the rubber. However, any other material mentioned in the introduction may also be chosen.

The support shaft (11) is cylindrical and extends beyond the ends of the shaft (13) on either side (12), so that the shaft ends (13) serve for the bearing of the cylinder, for example, in the radial cylinder bearing of the conventional bearing bearing.

The cover surface of the roller (14) extending in the width direction (10) has a substantially cylindrical shape which, however, is interrupted axially by certain incisions (15). Thus, the thickness D of the coating can be divided into the notched portion (16) and the non-grooved portion (17) between the grooved portions (16) and the support shaft (11). The elevation height of the stretch coating (12), which corresponds to an imaginary surface, is shown in Fig. 1 with reference numeral (26).

Reference numeral (18) denotes the radial (theoretical) median plane of the roll (10) extending in width.

The middle plane (18) forms a mirror surface, which means that the roller (10) in the direction of width (10) shown in Fig. 1 is provided with a mirror-symmetrical right-hand section. In the following, the cylinder will be described in greater detail by reference to the right-hand section thereof, so that the described criteria can also be applied to the left-hand side of the tiger symmetrically.

However, first of all, the sections directly to the right and left of the middle plane (18) have to be written, which are specially designed for the illustrated embodiment. In particular, this section of the cylinder has a cylindrical section (20 ') of cylinders adjacent the radial (21) groove.

In a section between the radial (21) groove (radial incision) and the right (12 ') end, there are four ring-shaped (15', 15a, 15b, and 15c) incisions at each axial distance.

In this case, the incision (15 ') has a parallelogram-shaped cross-section, while the other incisions (15a, 15b and 15c) have a substantially trapezoidal cross-section, so that the open end of the incisions at the wrapper surface (14) has a smaller slit width (in the case of the notch 15a) (marked with b).

In this way, the end of the lamellar-like section (20a) formed between the incisions (15 'and 15a) at the casing face (14) is axially wider than the end facing the support shaft (11).

Further, in Figure 1, it can be seen that the annular (15a) incision has a smaller depth than the incision (15b) having a recess depth smaller than that of the (15c) incision, each of which (15a, 15b, and 15c) has a lower depth. ) incision with increasing incision depth from the middle plane (18) to the right (12 ') end.

EN 207 259 B

The different cross-sectional shapes of the incision (21) or the incision (15 ') relative to the incisions (15a, 15b and 15c) are shown only for the purpose of characterizing the various cross-sectional shapes proposed by the invention, thus, of course, (21 and 15a, 15b, and the incisions 15c) may also be of a parallelogram cross-section, at a certain angle to the support axis (11). Likewise, it is possible to see the incisions (15 'and 21) with a cross-section similar to the incisions (15a, 15b, 15c).

However, according to the basic idea of the invention, it is important that one or more incisions have different cutting depths than the other, so that the embodiment shown in the figure is advantageous, in which the incision depth increases towards the peripheral end (12 ') of the wide stretch cylinder.

It is also apparent from Figure 1 that in the circumferential annular (15a, 15b, 15c) cs - corresponding embodiment, the incisions (15 'and 21) are also designed so that the incisions are mutually overlapping, as shown in (15b). and 15a) are further described below. The figure shows that the lower end of the incision (15b) toward the middle plane (18b) indicated by the reference (15b ') extends further in the direction of the middle plane (18) than the upper right of the notch (15a). end, indicated by reference (15a ').

In addition, it should be pointed out once more that the lamellar-like sections are shaped in the form of a booster surface, which is well recognizable in the lamellar-like section (20a). First of all, in combination with the trapezoidal (15a, 15b and 15c) slit characteristics, the corresponding surface section of the lamellae by the appropriate deformation in the direction of the support shaft (11) at the moment the material web is guided through the roller is deformed in the direction of the hollow end, so that they coincide with each other, and thus result in an approximately closed cylindrical surface, so that the diameter of the cylinders thus formed is then normally slightly smaller than the diameter of the support shaft 2D + (11).

This feature of the stretch coating (12) is also enhanced by the fact that the individual lamellae are easier to bend due to their reduced cross-section than the other embodiments of the prior art.

Further, as shown in Figure 1, the half-height (theoretically) cylindrical (26) surface is positioned between the base of the incision (15a) (23a) and the base (15c), which is preferred according to the invention. because the cylindrical softness (shapeability) thus exists, but at the same time it is stable as such.

The distance between the base of the incision (15a) (23a) and the base of the (15c) incision (23c) can then be determined by the extent of the distance x.

The pressure exerted by the tape material on the roller results from the tension of the web and occurs where the strip extends the wide stretching roll (10). The contour angle is as high as that of the web material, or the respective purpose of application, requires that the roller be provided with the necessary adhesion in the direction of the width and that the wide stretching force is sufficient for the strip material and thus the possible shoots and creases therein. for example in the case of textile tapes, smooth out. Due to the high coefficient of friction of the elastomeric coating material, it is possible to provide a safe surface with a large surface area.

The cylindrical coating according to the invention may also be applied to the support shaft in accordance with the prior art in accordance with the prior art.

The incisions shown in FIG. 1 (FIGS. 5a, 15b and 15c) have angles of between 38 ° and 45 ° with respect to the support shaft (11), so that the surfaces (15c ') that are facing the respective end (12') are always angled. (11) are inclined at 45 ° to the longitudinal center axis of the support shaft, while the surfaces (18c ') facing the center plane (18) are inclined at an angle of only 38 °, resulting in the already described trapezoidal shape or the tapering base of the intermediate lamella being released; such as. (23a, 23c).

In particular, the incision (21) adjacent to the cylinder portion (20 ') must be designed so as not to cut the cylinder part (20'), which is particularly advantageous according to the invention, otherwise the incisions must have a greater incision depth towards the respective roll ends. achieve.

Finally, it can be seen in Figure 1 that the section on the outside (24) is formed without further incision; of course, there may still be one incision from the front side; however, the solution shown is usually satisfactory because it is also formed with only a small pcrp distance, on the other hand, the width of the tape passed through the cylinder is, as a rule, slightly narrower than the total width of the cylinder.

Fig. 2 shows a portion of a roller (10 ') extending in width, which is shown only schematically but according to the embodiment shown in Fig. 1. On this roll (10 ') extending in the width direction (10), the strip (27) passes in the direction of the arrow (28), but before it passes through the circular disc (29) cutter blades shown only schematically to the individual strips (30, 31, 32 and 33). is broken. The axis of rotation of the cutting blades (29) is indicated by the reference symbol (34).

If we assume that the individual tape (30) runs through the central part (20 ') of the roller (10') extending in the width direction (10 '), this unique strip (30), as shown in the figure, runs straight. The axial displacement of the individual tapes (31, 32 and 33), which in FIG. 2 represents a better grip, is incrementally increased by the stretching roller (10 '), which means that the individual strip (32) is stronger. moves towards the right (19), and towards (12 ') the end of the end (31)

B 20, and the individual tape (33) is shifted more strongly again than the unique tape (32). This is the result of the annular (20 ', 20a and 20c) lamellar-like sections (19) toward the cylindrical end (19) due to the increasing incision depths and / or the corresponding shape of the ring blades. The stretching in the direction of the width extending towards the end (19) and the increasing deflection of the individual tapes (31, 32 and 33) towards the end (19) are indicated by the edges (31 ', 32' and 33 ') in a larger curve.

The embodiment shown in FIG. 2 can also be varied based on the fact that a plurality of stretching cylinders according to Example 1 are arranged side by side along a through-axis (11) such that the strip (27) is then cut with the blades (29). (10 ') before being rolled to a roller in the width direction, it is cut into four (30, 31, 32, and 33) individual tapes, each of which are stretched to the right and to the left to ensure that only (30, 31, 32 and 33) combining individual tapes so that they do not overlap in the direction of the support shaft (11) even after stretching.

Claims (8)

PATENT CLAIMS 1. Width-stretching roller for guiding ribbon-like materials with a support shaft having a cylindrical casing surface locally fixed to the support shaft with a deformable widthwise extension that is perpendicular to the support axis and is perpendicular to the support axis. that at least one of the incisions on one side of the widthwise stretching coating has a different incision depth than the other incisions, characterized in that the open end of the incisions (15 ', 15a, 15b, 15c) from the wrapping surface (14) is smaller ( a) as the end (b) towards the holding shaft (11). Roll according to Claim 1, characterized in that the cuts (15a, 15b, 15c) have a trapezoidal cross-section. Roll according to Claim 1 or 2, characterized in that the component of the circumference of the rotating surface forming the surface of the incisions (15 ', 15a, 15b, 15c) forms an angle of 30 ° to 60 ° with the longitudinal center line of the holding shaft (11). 4. Cylinder according to any one of Claims 1 to 3, characterized in that the circumference of the rotating surface forming the surface of the incisions (15 ', 15a, 15b, 15c) forms an angle of 40 ° to 50 ° with the longitudinal center line of the holding shaft (11). 5. Roll according to one of Claims 1 to 3, characterized in that the depth of the notches (15c, 15b) closer to the cylindrical ends (12 ', 12') of the stretch stretching width (12) is greater than the middle plane (18) of the stretching roll (10). notches (15 ', 15a). Roll according to Claim 5, characterized in that the incisions (15 ', 15a, 15b, 15c) between the center plane (18) of the width-stretching coating (12) and the individual roll ends (12', 12 ') are increasing has a notch depth. 7. Cylinder according to any one of claims 1 to 3, characterized in that there is an imaginary surface (26) between the bases (23a, 23c) of the trapezoidal cuts (15a, 15c) closest to the support shaft (11) and furthest from the support shaft (11). in the middle of the thickness (D) of the widthwise stretching coating (12). 8. Roller according to any one of claims 1 to 3, characterized in that a roller (10) extending axially adjacent to one another in a plurality of widths is arranged on a support shaft (11) for guiding material individually.