ROLL-CUTTING MACHINE

Abstract: Roll-cutting machine (100) with automatic feed and perhaps gluing of coil casings (20′,20″). The coil casings are inserted as a set from the side onto two feed beams (32,33) located above support roller (3). Sequential coil casings (20′,20″) are braced against different feed beams (32,33) so that coil casings (20′,20″) are laterally offset, but still overlap in cross section. Feed beams (32,33) with coil casings (20′,20″) are pivoted to the side over the support roller until coil casings (20′,20″) are picked up by clamping pins (16) of support arms (13,14) and brought into contact with the support roller (3) at the beginning of winding.

Description: The invention pertains to a web-slitting machine corresponding to the upper clause of Claim 1. There are two types of such web-slitting or roll-cutting machines. In the first type, a support roller is present and the coil casings held by the clamp pins of the support arms are in contact--at least at the beginning of coiling, viewed in the longitudinal direction of the support roller--alternately from right and from left in the upper quadrant of the support roller, with said roller parallel to its longitudinal axis. Now if the diameter of the coil formed on the coil housing begins to enlarge during the wind-up process and the coil builds up under contact with the support roller, then the contact point is essentially retained. But it is also possible to wind up freely, i.e., after beginning the coiling, the coil lifts off the support roller by a small amount (so that the free-running length of the partial lane running from the support roller to the coil remains). The second type is composed of two parallel support rollers placed at the same height, where the winding takes place at the outer upper quadrant of the support roller. In both cases it is important that the single coils are formed alternately from right and left. The reason for this is that the single partial webs or lanes naturally have to be coiled up transversely to the path width directly touching each other and also the partial rollers, but at the same time, the partial rollers are held by the support arms protruding at the ends and taking up space. If the partial rollers are placed directly side by side, then the support arms cannot be housed. For this reason, sequential partial rollers must be separated transversely to their axis. In DE-A-3 243 994 there is described a web-slitting machine according to the preamble of claim 1. In particular, DE-A-3 243 994 discloses a web-slitting machine comprising a feed device provided for feeding coil casings adapted for receiving the narrower webs to be wound thereon to winding stations provided for each smaller, narrower roll to be wound. The feed device includes adjacent troughs extending above a support roller essentially along its length for holding a set of coil casings and transport means for moving the troughs from a loading position in which coil casings are loaded into the troughs to a transfer position in which the coil casings are presented in a manner permitting automatic grasping by the clamping pins between the arms of each pair of parallel support arms for each winding station. Fast web-slitting machines possess considerable winding speeds, indeed, the working speed, i.e., the total time needed for processing a wide roll, e.g., a roll of paper machine width coming from the paper machine, into the appropriate number of partial rolls, is significantly determined by the down times, during which the new coil casing is installed, the coil casing is tightened and connected to the ends of the narrower webs, and the partial webs are removed from the partial rolls and the finished, wound partial rolls are removed from the web-slitting machine. The coil casings are installed by hand on web-slitting machines of this type and glued or stapled to the ends of the partial webs. This work conceals the danger of operating accidents, and like all manual processes, it is time-consuming. The invention is based on the need to increase the working speed of a related web-slitting machine. The object of the present invention is therefore to provide a web-slitting machine in which coil casings are properly installed quickly and efficiently, substantially reducing the time required for placement as compared to previously-used coil casing placement devices. To achieve this, the web-slitting machine of the invention is characterized by the features set forth in the characterizing part of claim 1. Basically, according to the invention, the troughs are so closely disposed in the loading position in the transverse direction to the support roller(s) that coil casings located in neighboring troughs partially overlap in radial cross-section. The coil casings are inserted lengthwise at an end of the troughs in such a manner that the coil casings partially overlap in radial cross-section during lengthwise insertion. The invention is initially directed at the process of installation of the coil casings and their motion for grasping by the clamping pins. The "motion" consists of bringing the coil casing into the roll-cutting machine and dividing it into the two sides of the support roller or support rollers, where one partial roller is always wound up on the right side, the next partial roller on the left side, etc. Due to automation, the operator is released from the dangerous and time-consuming activity of installing the coil casing and can accelerate this process considerably. Regarding the connection of installed coil casings to the ends of the partial webs or lanes, the invention operates as follows: It is still possible to glue or staple by hand, but the preferred design has this connection performed automatically, e.g., by installation of coil casings already provided with an adhesive strip. The preferred design of the device is described in Claim 2. Above the support roller or above the support rollers, between the formed partial rolls and below the mount for the straddle roller (which presses the forming coil against the support roller--especial.ly at the beginning of winding), a type of gusset plate is exposed which can be used in the stated manner. It is also possible to design the invention so that the single coil casings are moved in sequence, in order to be grasped by their particular clamping pins. But the preferred design per Claim 3 provides that a complete set of coil casings be moved simultaneously for all partial rolls to be produced from the broad paper web. The set can be prepared outside the web-slitting machine, and a change in width of the partial webs and even the production of partial rolls of different widths is easily possible. The support arms with the clamp pins and the saddle roller are positioned automatically according to the particular cutting program. In accordance with Claim 4, the coil casing can be pushed in lengthwise from the side of the web-slitting machine. This applies both for sequential, single introduction and also for insertion of the complete set. In the latter case a distribution of the sequential coil casing to the two outsides of the support roller or support rollers must occur. This distribution is promoted by the activity of Claim 5. By preseparation, the grasping of coil casings by the feature which brings them to one side of the other is promoted. An important, realistic design of the invention is the topic of Claim 6. The neighboring "troughs" make it possible to install the entire set of coil casings by pushing in from the side into the web-slitting machine and performing the preseparation simultaneously, by inserting the coil casing destined for a particular side of the support roller(s) into the specific trough for this side and setting it to the transfer position so the coil casing is grasped by the clamping pin. The coil casings are set onto the trough in such a manner that they protrude beyond the neighboring edges of the trough, so that a coil casing lying in a trough extends into the cross-sectional area of the following coil casing lying in the other trough. The movement of the trough from the filling position into the transfer position can be implemented in various ways, e.g., by suitable rails or guides. In the preferred, simplest and most reliable design per Claim 7, the troughs are mounted onto pivot arms. Depending on the width of the divided roll which generally corresponds to the width of the paper machine, the troughs can be 5 meters to 10 meters long. The troughs need not be very stable since they only have to bear the weight of the coil casings. In order to stabilize the relatively light trough along the entire length, it is recommended that they be placed on a feed beam per Claim 8. The troughs must not be enclosed like a roof gutter. As "trough" in the sense of this invention, any design will do which has the properties of Claim 9, i.e., the coil casing can be picked up from a uniquely defined position, both in the filling position and in the transfer position. When the trough is pivoted outward over the support roller(s) when switching into the transfer position, the coil casings, which lie freely in the trough, come to rest at the outer (i.e., away from the transfer position) boundary of the trough. The support arms belonging to a particular coil casing pivot in from above and would normally come to rest on the edge of the boundary, so that the coil casing somewhat farther below could not be grasped. To solve this problem, it is recommended that troughs be designed in accordance with Claim 10. The contact can be pressed down in the region of the support arms so that the axes of the clamping pins align with the axis of the particular coil casing. But if the support arms were to press the point of contact down along the entire length of the coil casing, then the coil casing would have no support at the initial moment before the clamping pins make contact, and the casing would drop down over the edge of the trough. For this reason, the contact must remain between the support arms. The design can be in accordance with the details of Claim 11. The design of Claim 12 ensures that in every case, at least one stopper remains active as a contact for the coil casing. This one stopper may have to hold the coil casing in position by itself under some circumstances, i.e., the coil casing may not loose its alignment parallel to the support roller or to the axis of the clamping pin, even when only one stopper is in contact. Thus a certain contact length must be present per Claim 13, so that the coil casing cannot twist about an axis perpendicular to its axis. The stoppers can be pivot-mounted on the outside of the trough on feed beams (Claim 14), and the stopper is pressed away by the support arms with pivoting against spring tension. The subject of Claim 15 is an important property in practice. The support arms of a coil casing pivot into a position where the clamping pins are still located axially outside the coil casing. By moving the support arms together, the clamping pins enter into the ends of the coil casing. It is possible that the support arms will strike against an axial front side of a stopper during this axial shift. In order to prevent this, a slanting is provided so that the stopper can be pushed away not only when the support arms pivot in (e.g., during their radial approach), but also for a radial offset, where the support arm slides on the slant and radially shifts the attendant stopper. One favorable aspect is the combination of coil casing feed with the device to cut off the partial lanes after final winding of a roll. Through the action described in Claim 16, the outward motion of the trough can be used simultaneously to bring the cutting device into position, or conversely, bringing the cutting device into position can be used simultaneously for shifting the coil casing outward. Thus the additional problem of incorporating the separation of partial lanes from the partial rolls into the automated system is solved. As already claimed, the connection of the ends of the partial lanes with the coil casing can be incorporated into the automation. This can be done in particular through the properties of Claim 17. It is recommended that the placement be made so that the ends of the partial lanes remaining at the support roller (designed as suction roller) after cutting off can be glued directly to the coil casing when winding, without requiring a twisting of the support roller for tightening the ends of the partial lanes after cutting. In order to provide space for housing the invented device, it is recommended that the position of the clamping pins be used according to Claim 19 when contacting against the support roller. The distant contact point of the coil at the support roller also lies in this range of 45 degrees. This means that the contact point is pressed out farther than usual with respect to the support roller, in order to create space between the forming coils. Normally, the contact point lies at about 30 degrees to the vertical, that is, farther above on the outside of the support roller(s). The figures show sample designs of the invention. Figure 1 shows a side view of a first sample design. Figure 2 shows a view per Figure 1, from the right. Figure 3 shows a cross section along line III-III of Figure 1. Figure 4 shows an enlarged view of the area of the two troughs. Figure 5 shows a view of the front side of a stopper in direction V in Figure 4. Figure 6 shows a view of the left transfer beam of Figure 4 in the transfer position. Figures 7 to 9 show different working phases of the automatic feed of the coil casings. Figure 10 is a schematic drawing indicating the use of the invention in a design having two support rollers. In Figure 1, a part of roll-cutting machine (100) is shown. It is used to divide a paper lane the width of a paper machine into directly neighboring partial lanes (10',10'') which are wound up into partial rolls (1,2) of corresponding width. The actual cutting station is not shown. The illustration is limited to the important parts for the invention. The partial lanes (10',10'') running in the direction of the arrow in the lower region of Figure 1, have just left the cutting station and are moving to support roller (3) which is designed as a suction roller and the ends of partial lanes (10',10'')--if they are cut at one point of the perimeter of support roller (3)--can be held fast. Support roller (3) is seated in bearing block (4). Level (5) of the workshop floor is also denoted. The machine stand has an A-shape and on each end of support roller (3) there are two upright supports (S). Support roller's (3) length equals the total width of partial lanes (10',10''). On both sides of the sides of support roller (3) there are straight guide features (6,7) extending over the width of the machine; skids (8,9) are positionable parallel to the axis of support roller (3). Support arms (13,14) (only (14) is shown) can pivot about axes parallel to the axis of the support roller; the support arms are mounted on pivot pins (11,12) located in the area of the level of the axis to support roller (3). On the upper end (see Figure 1) there is clamping head (15) with a miter gear and clamping pin (16) parallel to axis of support roller (3), which can be driven about its axis by an electric or hydraulic motor (not illustrated). Naturally support arms (14) can be designed as mirror images. To each partial roll (1) or (2) there are two support arms (13) or (14) located on their front sides, whose clamping pins (16) face each other and grasp into the ends of the coil casing forming the coil core of partial rolls (1,2). Partial rolls (1) or (2) wound up from neighboring partial lanes (10',10'') are offset from each other in the longitudinal direction of support roller (3). This naturally applies also for support arm pairs (13,13) or (14,14) allocated to partial rolls (1) or (2). The arm pairs are thus not applied to the same point, viewed along support roller (3). Before beginning a wind-up process, partial lanes (10',10'') are cut off and separated from preceding, finished coiled partial rolls (1,2). The end of partial lane (10') lies, for example, in the region of arrow (17); the end of partial lane (10'') lies in the region of arrow (18). The ends of partial lanes (10',10'') are held fast by the suction effect of support roller (3) on their periphery. Naturally in general, more than two partial lanes (10',10'') are present. The ends of all partial lanes (10') extending out to the left side of the support roller rest at same point (17), and likewise for partial lanes (10''). By features to be described below, at the beginning of the winding process, coil casings (20',20'') whose length corresponds to that of partial rolls (1,2) to be produced are brought to the transfer position indicated in Figure 9. When support arms (13,13) pivot, clamping pins (16) move along arc (19) passing through the transfer position, so that clamping pins (16) grasp particular coil casings (20',20'') at support arms (13,14) pivoted into the transfer position, and can expand between them. Support arms (13,14) are then pivoted further into the contact position where tensioned coil casings (20',20'') come to rest in support roller (3) indicated in Figure 1. The contact position of coil casings (20',20'') with respect to the vertical forms an angle (21) of about 45 degrees, which is enlarged compared to known designs in order to provide space between partial rolls (1,2) for feed device (50), as explained below. Coil casings (20',20'') rest on the ends of partial lanes (10',10'') and are connected to them. They bear a gummed edge and are pressed by support arms (13) with a certain pressure against the surface of support roller (3); the gum adheres to the paper, and the end of partial lanes (10',10'') begins to roll up onto coil casing (20',20'') when clamping pins (16) are slowly accelerated. At a distance above support roller (3) there is support beam (30) extending over the width of the machine; it has longitudinal guides (22,23) with skids (24) sliding on support beam (30) in a longitudinal direction. Each skid (24) has rotating roller shafts (26) pivoting about axes (25) parallel to the axis of support roller (3). The shafts have on their free ends, pivoting roller rockers (27) each with two saddle rollers (28) which can be brought by hydraulic cylinder (31) into contact on the outside of the angle formed on coil casing (20',20'') after pivoting roller shafts (26), in order to secure the contact and a satisfactory formation of the coil, especially in the initial phase. In the area above support roller (3), between partial rolls (1,2) and below support beam (30), there is device (50) for automatic feeding of the coil casings. It is composed of two tightly neighboring feed beams (32,33) at the same height above support roller (3) parallel to it along the entire length. The beams are held against pivot arms (35,36) pivot-mounted to common bearing pin (34) near bearing block (4) of the support roller and extending downward in front of the front sides of support roller (3). Pivot arms (35,36) with attendant feed beams (32,33) can be pivoted outward away over the top side of support roller (3) side by operation of hydraulic cylinder (37,38). The design of feed device (50) in the region of feed beams (32,33) is shown on an enlarged scale in Figure 4. Feed beams (32,33) consist of a rectangular, hollow profile and are placed so that their top sides rest horizontal in the position of Figure 1. On these top sides there is contact (42) supplied for the facing edges of feed beams (32,33) on support profile (41). Said contact passes along the length of the feed beam (32) or (33) and is sloped to the other feed beam. Vertical bars (43) are welded to the facing vertical sides of feed beams (32,33); these bars extend upward over the support profile to level of contact (42). As seen in Figure 4, contact (42) and the upper edge of bar (43) passing along the length of feed beam (32,33) forms contact points (52,53) for coil casings (20',20''), on which they can be pushed along from the side of roll-cutting machine (100). Due to the two-point bearing, coil casings (20',20'') are found in the position indicated in Figure 4 in a stable equilibrium. The sizing and placement is made so that the cross sections of coil casings (20') or (20'') resting on left contact (42) and on right contact (42) intersect in the manner visible in Figure 4. So if alternating left and right coil casings (20') or (20'') are supplied, then a whole set of coil casings can be pushed into position merely by sliding them in from the end, even though the sequential coil casings are braced once against feed beam (32), and later against feed beam (33). The bracing is equally suited for coil casings of greater diameter, as indicated by dashed line in Figure 4. Gummed sections (55) or adhesive strips are applied outside roll-cutting machine (100) on coil casings (20',20'') and gluing to the ends of partial lanes (10',10'') can be performed automatically. At the sides of feed beams (32,33) located in the pivot direction, stoppers (45) can pivot up and down; the stoppers run parallel to the axis of support roller (3) on bearing blocks (44) around axes (46). The stoppers are held by spring force in the normal position shown in Figure 4, but they can be pressed down to overcome the spring force onto the top side of feed beams (32,33). The stoppers comprise arms (47) aimed against coil casings (20',20'') and bearing contact plate (48) on the side facing it; its front side forms cylinder surface (49) coaxial to axis (46). In direction V (see Figure 4), contact plates (48) have the outline shown in Figure 5, i.e., they are essentially rectangular, but slanted to the upper corners at (49). If feed beams (32,33) are pivoted into the transfer position, left feed beam (32) comes to the position illustrated in Figure 6. Now coil casing (20') rolls off to the left over contact (42) and comes to rest at contact plate (48) of stopper (45). While in the condition shown in Figure 4, coil casings (20',20'') undergo an extension in stable equilibrium along lines (52,53), and a bearing results in the condition of Figure 6 along lines (54,55). In both states, the coil casings are held in a defined position. Parts (42,43) and (48) together form trough (40) indicated by a dashed line in Figure 6. A mirror-image trough is formed at right feed beam (33). Troughs (40,40) are close neighbors and are bounded on the facing sides by vertical bars (43) forming contact lines (53) in the position of Figure 4. Coil casings (20',20'') which have a circular cross section and rest from above on bar (43) extend for geometric reasons beyond bar (43) to the other feed beam, so that in an upright position of feed beams (32,33), coil casings (20',20'') overlap as shown in Figure 4 and sequential coil casings (20',20'') contact each other in an axial direction. In the transfer position, a defined position of coil casings (20',20'') sets in so that clamping pins (16) at support arms (13) can enter the ends of coil casings (20',20''). The placement of two feed beams (32,33) with stoppers (45) is shown from above in Figure 3. Stoppers (45) are shown only in the middle, while the other stoppers are indicated only by their contact plates (48) and are otherwise indicated only by dashed lines through their midline. Thus, on each side there is a whole series of stoppers (45) and contact plates (48) are all aligned to each other and the width of the single stoppers is selected so that at least three stoppers contact a coil casing even for the shortest occurring length of coil casings (20',20''). To explain this factor, we return to Figure 6. If feed beam (32) is in the transfer position and the two support arms specified for coil casing (20') pivot in, then in the case of middle coil casing (20') in Figure 3, these support arms would come to rest with their undersides (54) on two stoppers (45), whose contact plates are indicated as (48') in Figure 3. These two stoppers would be pressed downward in the manner visible in Figure 6 against spring force so that their upper edge comes to rest under trough (40) or contact (42). In the region between support arms (13,13), stoppers (45) are not pressed down, but remain in their normal position so that coil casing (20') continues to be braced in the manner shown in Figure 6, where the grasping by clamping pins (16) can occur. Now if stoppers (45) were longer, or if they were pressed down along the entire length of coil casing (20'), then in the position shown in Figure 6, coil casing (20') would roll down and fall between support arms (13,13) before it could be grasped by clamping pins (16). In the illustrated example, three stoppers (45) are stopped along the length of middle coil casing (20'). But it is sufficient if only one stopper (45) is present in the illustrated transfer position of Figure 6 for the bracing. For this purpose, it has a certain length in the direction of the axis of support roller (3) in order to guide coil casing (20') in its axis-parallel position, e.g., 50% of the shortest coil casing. Insertion of clamping pin (16) into the ends of the coil casing occurs through corresponding shifting of support arms (13,14). In order to keep them from striking the front sides of stoppers, slanting (51) (Figure 5) is provided, by which stopper (45) can also be pressed away upon the axial approach of a support arm. As shown in particular in Figure 4, cutting blades (61,62) are located at the outsides of feed beams (32,33); said blades can be moved by means of pneumatic cylinder (60) extending over the length of feed beams (32,33) and this cylinder can be moved over the width of the machine. We are dealing with pneumatic cylinders (60) as pistonless cylinders, called ORIGA cylinders, where the stroke of moving element (63) can occur over the entire length. Cutting blades (61,62) are not of symmetrical design and placement, because the cutting points are not located symmetrically in the roll-cutting machine. Figure 7 shows the operation of the device when cutting. Partial rolls (1,2) are finish-coiled and are moved outward after separation of the lane. On the right side of Figure 7, lane (10'') is held in position for cutting by clamping rod (65). After cutting, the ends of partial lanes (10',10'') coiled around support roller (3) are held securely by support roller (3) due to the suction effect. Feed beams (32,33) then pivot upward into the position shown in Figure 1, where the insertion of the set of coil casings (20',20'') occurs from the side. As soon as coil casings are inserted into "troughs" (40), feed beams (32,33) move apart in the manner indicated in Figure 8, and coil casings (20') held in left trough (40) move left; those coil casings (20'') in right trough (40) are carried to the right. In Figure 9 feed beams (32,33) have reached their end position, i.e., the transfer position. Coil casings (20',20'') are located in a position as shown in Figure 6 and are grasped and clamped by clamping pins (16) of support arms (13) or (14). Next, support arms (13) move a little counterclockwise; support arms (14) move a little clockwise, whereupon feed beams (32,33) pivot upward and support arms (13,14) pivot inward until coil casings (20',20'') contact support roller (3) covered by the end of partial lanes (10',10'') and the windup can begin. In Figure 10, the entire device is illustrated schematically. The design has two support rollers (3',3'') which can be filled with coil casings (20',20'') in practically the same manner, and the wind-up of single rolls (1',1'') takes place in the region of the particular outsides of support rollers (3',3'').

Claims: A web-slitting machine (100) of the type wherein a wide web of paper, foil, or the like is unrolled from a wide supply roll, the web being longitudinally divided into a plurality of narrower webs (10',10'') at a cutting station, and the narrower webs (10',10'') then being rewound into a plurality of smaller, narrower rolls (1,2), said machine (100) comprising: one or two support rollers (3;3',3'') for receiving the narrower webs (10',10'') from the cutting station and about which the narrower webs (10',10'') are partially wrapped, a plurality of winding stations positioned on the two outer sides of the one or two support rollers (3;3',3'') for operating in conjunction therewith to wind the smaller narrower rolls (1,2), one such winding station being provided for each smaller, a narrower roll (1,2) to be wound, a pair of parallel support arms (13,14) for each winding station, said support arms (13,14) being pivotally mounted on one end about an axis parallel to the axis of the support roller (3;3',3'') with which it operates, said arms (13,14) having on the other end, rotary driven clamping pins (16), the pins (16) from the arms (13,14) of each pair being disposed in facing relationship and rotatable about an axis parallel to the axis of the support roller (3;3',3''), said pins (16) being adapted for grasping therebetween a coil casing (20',20'') adapted for receiving a narrower web (10',10'') to be wound thereon and for bringing the coil casing (20',20'') into contact with the support roller (3;3',3'') associated therewith, a feed device (50) provided for feeding the coil casings (20',20'') to said winding stations, said feed device (50) including adjacent troughs (40,40) extending above support roller (3) or rollers (3',3'') essentially along its length for holding a set of coil casings (20',20'') and transport means (32,33) for moving said troughs (40,40) from a loading position in which coil casings (20',20'') are loaded into the thoughs (40,40) to a transfer position in which the coil casings (20',20'') are presented in a manner permitting automatic grasping by said clamping pins (16) between the arms (13,14) of each pair of parallel support arms (13,14), characterized in that said troughs (40,40) are so closely disposed in the loading position in the transverse direction to support roller (3) or support rollers (3',3'') that coil casings (20',20'') located in neighboring troughs (40,40) partially overlap in radial cross-section, said coil casings (20',20'') being inserted lengthwise at an end of said troughs (40,40), said coil casings (20',20'') partially overlapping in radial cross-section during lengthwise insertion. Web-slitting machine according to claim 1, characterized in that said feed device (50) is located in the space above said support roller (3) or support rollers (3',3''), respectively. Web-slitting machine according to claim 1 or 2, characterized in that a complete set of coil casings (20',20'') can be fed simultaneously for all narrower rolls (1,2) by means of said feed device (50). Web-slitting machine according to any one of claims 1 to 3, characterized in that said coil casings (20',20'') can slide in lengthwise from the side into the web-slitting machine (100) by means of said feed device (50). Web-slitting machine according to claim 4, characterized in that said coil casings (20',20'') allocated to said support arm pairs (13,13;14,14) of the two sides are preseparable by means of said feed device (50). Web-slitting machine according to claim 5, characterized int hat said feed device (50) comprises two side-by-side troughs (40,40) at the same level, extending centrally above said support roller (3) or rollers (3',3''). Web-slitting machine according to claim 6, characterized in that said troughs (40,40) can pivot on pivot arms (35,36) via said support roller (3) or support rollers (3',3''). Web-slitting machine according to claim 7, characterized in that said troughs (40,40) are located on feed beams (32,33) extending over the width of the web-slitting machine (100). Web-slitting machine according to any one of claims 6 to 8, characterized in that each trough (40) is designed so that said coil casings (20',20'') contact the trough (40) in stable equilibrium both in the loading position and in the transfer position. Web-slitting machine according to any one of claims 6 to 8, characterized in that said trough (40) has on the outside a contact which can be pressed aside by said support arms (13,14), but which remains between said support arms (13,14) for the coil casings (20',20'') in the transfer position. Web-slitting machine according to claim 10, characterized in that the contact comprises a series of stoppers (45) located along feed beams (32,33) and pressed away by spring force from the pivoting support arms (13,14). Web-slitting machine according to claim 11, characterized in that the division of the stoppers (45) is made so that even for the shortest occurring length of the coil casings (20',20''), at least three stoppers (45) are in contact with the coil casing (20',20''). Web-slitting machine according to claim 11 or 12, characterized in that the stoppers (45) contact a section of the coil casing (20',20'') making up at least 50 percent of the length of the shortest occurring coil casing (20',20''). Web-slitting machine according to any one of claims 11 to 13, characterized in that said stoppers (45) are pivot-placed seated on the outside of the trough (40) at the feed beam (32,33). Web-slitting machine according to any one of claims 11 to 14, characterized in that stoppers (45) at the ends located in the longitudinal direction of the feed beams (32,33) are sloped upwardly so that they can also be pressed away by the support arm (13,14) moving in the longitudinal direction. Web-slitting machine according to one of claims 6 to 15, characterized in that cutting devices (60,61;60,62) are provided at the outsides of said troughs (40) and are connected to them, said narrower webs (10',10'') being cut off by means of said cutting devices on the two sides of the support roller (3) or support rollers (3',3''). Web-slitting machine according to any one of claims 1 to 16, characterized by an allocated device which is provided with an adhesive strip extending along its length so that the coil casings (20',20'') are glued before arrival on the troughs (40) on the upward-pointing side. Web-slitting machine according to one of claims 16 or 17, characterized in that the cutting position is located so that the end of the narrower webs (10',10'') remaining at the support roller (3;3',3'') without additional advance of the narrower webs (10',10'') is suitable for connection with the coil casings (20',20'') placed in said troughs (40) in the position of the supports arms (13,14) in contact with the support roller (3) or support rollers (3',3''). Web-slitting machine according to one of claims 6 to 18, characterized in that in the contact position of the support arms (13,14), the connecting plane of clamping pins (16) or the axes of the coil casings (20', 20'') and the axis of the support roller are at an angle (21) of 45 degrees from vertical.

Inventors: GOERNER, BERND, Görner, Bernd
Applicants: BELOIT CORPORATION
Application year: 1989
Main classification: B65H19
IPC codes: B65H19, B65H18