DE2160514A1 - PROCESS FOR MANUFACTURING CUTTING ROLLERS FOR MACHINERY FOR CRUSHING BULK GOODS - Google Patents

Description

Applicant: Pirraa behind Maschinenfabrik G-.mbH & Co. KG », 4508 Bohmte, Brockstrasse.

"Process for the production of cutting rollers for machines for comminuting, of bulky goods"

The invention relates to a method for the delivery of cutting knives for "as chin en for chopping bulky goods on one Wave.

Ss is already known. Cutting knife with polygonal openings closed provided, for example with hexagonal openings and to be fixed on a hexagonal shaft next to each other non-rotatable. 3in sol- ' ches procedure is very time-consuming, especially if it is used for the production of two counter-rotating schnoid rollers, the cutters of which have eccentric cutting edges. sit, who perform a V / alzenschnitt in mutual engagement, üa it is important with such cutting rollers that the opposing knives always in precise engagement such cutting rollers would have to be extremely time-consuming and extremely time-consuming when using the known assembly process worksa'jfv / enaiger way exactly ~ e '^ be ground into each other. Dies mac '· ".!' such cutting rollers result in particularly expensive components a shredder. It also makes it known Assembly process in case of Poschädigun'T; a.es individual cutting knife in each case that Auewci.r .-) lh buider, coordinated cutting rollers, ciurc'i required two new cutting rollers. Starting from

309826/0431

BAD ORSÖINAL

10 115. ■ - 2 - November 27, 1972

This prior art has πich the invention set the task of a simple to carry out assembly method of the initially to create the type mentioned, the precise and reliable alignment and fastening of the cutting knife on the Wave with low Auf v / an d enabled.

This object v / ith the invention attained in that the \ cutting blade elle strung with a bore on the common V /, then possesses means of a gauge having a plurality of support points for each cutting blade, each other and to v / elle aligned and oriented in the The position can be connected to the rope by means of an adhesive or adhesive placed between the walls of the hole and the V / elle. ■ - "

Such a defesting process ensures that each individually processed cutting knives are always fixed exactly in the prescribed position. The contagion procedure gives such accurate results because? the previously indispensable ' Reworking and mutual grinding of the knives combing with one another are completely eliminated 3: ann. With the new casting process there are savings compared to the previously known method, which leads to a rust reduction on one Fraction of the previously required costs. Always |, reproducible alignment of the individual cutting blades the V / elle lead to the fact that now, when a cutting roller is worn or damaged, both cutting rollers are no longer used have to be replaced, only the worn ■ ne or damaged roller.

The invention also proposes that the on c-iner side a Recess and on the opposite side a cutting knife having a corresponding projection in the porin ■ each other by pouring resin into the recess between of a Mehneidmessors and projection 'of the neighboring one

309825/0431 " ⁵ "

BATHROOM OBlGINAL

^μ 10 115 - 5 - November 27, 1971 - *;

Cutting knife remaining space: "

Such an absolutely secure and firm connection of the cutting, knife with each other leads to the fact that one on a single -. "The force acting on the cutting knife is introduced into all the cutting knives and transferred to the adhesive connection via the bore walls of all the cutting knives arranged next to one another. By this measure the ; Adhesive connection is much less stressed than if there were no fixed connections between the individual cutting cutters. .

It has also proven to be useful that the cutting, knives against each other by a certain angle. *. · s-etzt placed on the shaft v / ground, whereby the angular offset when accounting, necessarily due to the form and address. - ' Order of the projections and recesses results.

It is useful 'that the radial wall of the recess - Compared to the shaft axis has different distances - and the projection corresponding in its shape by one Angle is offset from the recess. * ·

Such a formation of recess and projection represents'; . ensure that the mutual offsetting when assembling the "· ,. · Cutting knife on the shaft can easily be done automatically. '.

The Dx finding also suggests that the distance between ä The bore of the cutting knife and the shaft surface is 3/10 to 5/10 mm. This ensures that an adhesive or bonding agent of sufficient thickness between the wall of the bore. '

309826/0431

BATH

10 115-4-27

and 7 / ellenoberflache can be brought.

November 1971

The invention also sleeps a Nontagelehre zur Durchführunguni ·; of the method according to the invention, which is characterized in that,?; they have a central, height-adjustable Admission for the V / elle and three by 120 ° against each other has staggered vertical v / lines, on which one below the other Consoles are attached, three of which are arranged on a common Jibene support points for carry the cutting knives.

For easier handling, it is useful to use the assembly jig that the vertical V / ellen are designed to be pivotable together with the consoles.

Furthermore, the invention proposes that the consoles have bores through which the V / ellen extend, wherein the consoles arranged one below the other on a V / elle are attached to the ball by means of a tongue and a spring. Sine such type of attachment ensures that the consoles are mounted in precise alignment on the shaft and; set will.

Finally, the invention also proposes that the shafts arranged on a shaft all have stops for laterally plaguing the cutting presses. Such stops prove to be particularly necessary when the individual I-Eaters are to be attached to the V / elle offset from one another by certain angles.

A preferred embodiment of FIG Invention described in detail with reference to the drawing. Show it:

- 5-

309825/0431

BATHROOM OBlGlNAL

10 115 -5- 2?; November 71-

Fig. 1 · a side view of the shaft and cutting knives · existing cutting roller, partly in cut,

2 shows a view of the cutting knives offset from one another from the front, without shaft,

Fig. 3 is a partially sectioned side. '· view of the assembly template,.

.Fig. 4 a top view of the assembly jig _%

5 shows a section through an assembly device for two cutting knives designed as disks with inserted cutting knives,

Fig. 6 is a side view of the two cutting blades in their . Assembly position. ■

First to the assembly jig according to Figures 3 and 4:

Three shafts 1, 2 and 3 are vertical at the corners of an equilateral Arranged in a triangle. So they are each offset by 120 ° from one another. All three waves are each in upper and lower bearings pivoted and; carry over a tongue and groove connection 4 firmly connected to the shafts Consoles -5. The neighboring consoles are opposite each other others offset by a certain amount. The consoles ″ 5 on the shaft 2 each have stop pins 6. The shafts ·. can be pivoted by means of handles 7 and by means of detachable locking pins., 8 in a specific, predetermined pivot position be determined. The lower bearings of shafts 1, 2 and are seated in a common base plate 9j while the upper Bearings of these shafts sit in an upper plate 1o. Above the upper plate Lo is also a removable cover plate 11 provided, which pin 12 carries, d-ie in openings of the can engage upper plate 1o. In the position shown, these 'pins 12 ran into their engagement openings. the Cover plate 11 is over by means of pivotable brackets 13 the pins 12 can be clamped on the upper plate 10. The upper plate 12 carries a height-adjustable via a screw 14, in a sleeve I5 in the axial direction. adjustable pin 16, the pin 16 corresponds to a flexible mounted receptacle 17 in the base plate 9.

309825/0431 _ß J

BAD GRIQiNAL

• 10 115 '- β - November 27, 1971'

. First, the shaft of the cutting roller is used as the centering. - Thorn-formed receptacle 17 is placed and held in this position by means of the holder 18. Then the cutting ■ knife with outwardly swiveled consoles aiif the shaft postponed. Then the shafts are in their locking position .. · swiveled, ■ in which the Raot pins 8 engage, and thereby · that the cutting knives with 'their machined cutting edges -' are placed on the support points 19 of the consoles. So too the rotational position of the cutting knife is fixed, wear the Consoles of the shaft 2 stop pins 6. As soon as the top 'The cutting knife rests on the Oberston consoles

»Cover plate 11 applied to the device and then the The shaft would be aligned with the cutting blades. • This is done by turning the screw 14 and the screw on it - Fastened pin 16, the spring-plastic recording adjusts itself accordingly. The cutting blades are then potted together with the aid of cast resin. ■ -The adhesive and joining agent was already before the threading, -the

iron cutting knife on the shaft, either in the holes - the cutting knife or on the surface of the shaft- " been brought.

The arrangement of the cutting blades 20 on the shaft is essential 21 can be seen. With the exception of the outermost "left-hand cutting knife (see Fig. L), the cutting knives each have left. End of a roughly triangular in its outer contour Pin 22 and on the opposite side a Ausneh-. mung 23 corresponding form. The recess 23 and the three * angular pins are pivoted through a certain angle arranged against each other. This automatically results in an offset arrangement of the knives with respect to one another during assembly. The triangular ones. Pins each engage in the corresponding recesses 23 of the adjacent cutting knife a, but under '"! content of a joint 24, which is made with cast resin . is filled out.

309826/0431 - 7 -

BATHROOM OR10INAL

216051Λ.

10 115 -7- November 27, 1971,

The cutting edges 26 of the cutting knives 20 are made using the described assembly jig always absolutely exactly, to each other " and fixed to the shaft, so that after installing the. ' set cutting rollers, the cutting rollers match each other without further reworking. '. . ".:

Instead of the knife shown in Figure 1 and 2 can with With the help of the method according to the invention, it goes without saying also knives of all other shapes on the associated shafts

be aligned and set. The inventive method is not limited to a specific knife shape or to a specific Mersseran arrangement.

In Figures 5 and 6 there are, for example, two cutting blades shown, which have the shape of flat discs. Even , the assembly of such disc-shaped knives has so far formed "'■ a big problem. The disks had to be ground absolutely plane-parallel and with a thickness of 15 mm a deviation of no more than 1/100 mm p. The '. '· In the assembled state, the disks lay tightly pressed against one another on a hexagonal shaft. With this type of assembly the tolerances add up and, despite the very, great accuracy of the individual knives, this leads to considerable and disruptive inaccuracies in the entire cutting roller. ■. -

The assembly method according to the invention makes it possible to forego the particularly costly accuracy requirements for the cutting knife disks. It is enough now rather, just one. Grind the side of the disc flat and leave the other unmachined or rough. One Deviation in thickness of the cutting knife disc of up to 1 mm is now harmless. ■

The set of knives shown in Pigur 6, which consists of two There is knife disks, is shown by means of the figure 5 shown Month ape device, «assembled.

BAD ORiGiIMAL,

-21605-U * ■

10 115 -S- November 27, 1971

■ A base plate 30 carries a firmly connected thereto. Central pin 31 "which rests closely on the walls of the bores JA of the first cutting knife 32 and of the second cutting knife 33" The cutting knife 32 has a flat ground side 32a and a side 32b that is only roughly machined or unmachined. The second cutting knife 33 likewise has a plane-ground side 33a and. an only roughly machined, for example ¹ roughed, or unmachined side 33b. The side 32a rests on the inside of the base plate 30 while the side 33a rests on the inside of the cover plate 41. The distance between the inside of the base plate J> 0 and the inside of the cover plate 41 becomes absolutely precise with the aid of the two. f balls 44 and 45 is set as kugelt balls made ·. a batch are used as position, for example, the manufacturer. _x.. a ball bearing is used. the variations in the diameter of spheres of a batch are in the order of magnitude of only 1/1000 mm. Accordingly, the distance between the ground sides 32a and 33a is set with an accuracy of 1/1000 mm.

In the base plate 30 nor a centering pin 42 is provided which engages in assembling the mounting device in the · \ bore 43 of the cover plate 41, ·

The first cutting knife 32 has two blind holes 35 and 36 » corresponding blind holes 3? and 38 are in the second cutter 33 provided. In the recess, which is marked by the *. '. opposing blind holes 35 and 38 are formed, a bolt 39 is inserted, which is dimensioned so that it maintains a distance from all the walls of the recess. In ent- ' In other words, the bolt 40 is inserted into the recess formed by the blind holes 36 and 37. An O-ring 48 closes the free space between the mutually facing sides 32a and 32b laterally. "■ · '.".

30982S / 0431 ~ ⁹ ~

10 115 -9- '2 ?. November 1971

The balls 44 and 45 are held in place by means of two holders 4-7 and 46 held freely movable. The diameters of the openings 48 and 49 are larger than the diameter of the balls 44 and 4-5 so that the balls can freely pass through these openings. The holders 46 and 47 are on. the base plate 5 ^ attached. ·

• The cutting knives 32 and 33 are after, the bolts 40 and ' 39 are inserted into the recesses, placed on the central pin 31. It is possible to use a spring element between to put the facing sides 32b and 33b, which is later poured in and ensures that the cutting knives with their flat-ground sides are each tight and lie firmly against the inside of the cover plate and base plate. In the aligned state, the cover plate 41 and the base plate 30 by means of a device not shown firmly pressed against each other, so that the distance between their flat ground inner sides exactly the diameter of the two balls 44 and 45 corresponds. The one around the spacing joint 52 placed O-ring delimits this spacing joint laterally. so casting resin is pressed through the central bore 46 and the transverse bore 47 into the spacer joint 52, which is also located in the remaining spaces between the blind holes 36 and 37 with the bolt 40 on the one hand and the blind holes 35 and 38 and the bolt 59 on the other hand distributed. After solidification of the cast resin, the ground flat sides 32a and 32b are aligned to one another with an accuracy of 1/1000 mm.

The cutting knives, which are extremely precisely aligned in pairs can now be done in pairs by means of the steps shown in FIGS Assembly template shown applied to a common shaft and also cast with the shaft and with each other will. For this purpose, "are appropriately ground Sides 32a and 33a in the assembled position opposite blind holes are provided in the already

309825/0431 -10-

10 115 -1Q-. November 27, 1971

described'Weise freely movable bolts are inserted. The free spaces between bolts and blind holes are just like the Eugen between the opposing sanded ones. Sides of the cutting knife pairs with Cast resin poured out, the cutting knife with the shaft ' be glued. Such an assembly is extremely accurate of the final cutting rollers, because - there is not even an addition of the very small errors, because the pairs of cutting tools are arranged at a distance from one another and since these distances are determined by the Hontage theory. .

·

~ Figure 6 shows the shape of the cutting knife ^ which have cutting teeth 50 and 51, respectively.

- A η sp r ü c h e -

30982570431

Claims (1)

10115. -11- - 2 ?. November 1971 " Expectations Method for attaching cutting blades for Ma-. machines for shredding bulky goods on a common shaft, thereby ge fc e η η I show η et that the cutting knife (20) with a bore (27) is threaded onto the common shaft (21), then by means of a gauge that has several support points (19) for each cutting knife, aligned with one another and with the shaft and connected to the shaft in the aligned position by means of an adhesive or joining agent placed between the bore walls (27) and the shaft. * 2. The method according to claim 1, characterized in that g e k en ή -, shows that on one side a recess (23) and on the opposite side one in the Form corresponding projection (22) having ' Cutting knife (20) together by introducing a Adhesive or joining agent or of casting resin in the between the recess (23) of a cutting knife and the projection (22) of the adjacent cutting knife remaining intermediate. room (2 * 0 to be connected,. ' 3. A method according to claim 1, characterized eic e g η η ζ calibratable - net, that the cutting blades turn in their Zusammenbäuiage] other opposite recesses (35,36,37,38) Open V | in which connecting elements (39, ^ 0) are inserted, the connecting elements with the recesses j and the cutting knives C32,3J) with one another by introducing an adhesive or joining agent or of casting resin in the between cutting knives, recesses and connecting elements remaining space are connected * ·. 309825/0431 -12- November 27, 1971 4-, method according to claim 2, characterized in that the cutting knives (20) are each arranged offset from one another by a certain angle on the shaft (21), the angular offset during honing inevitably due to the shape and arrangement of the · · Projections and recesses results. - ^ 5. Cutting knife for mounting on a shaft according to the procedure according to one or more of claims 1, 2 and 4, thereby. characterized in that the radial wall of the h recess with respect to the shaft axis different .A- str. ends and the corresponding in its shape · •. Projection (22) at an angle with respect to the recess : (23) is offset. 6. According to a method according to one or more of claims 1 to 3, a cutting roller made of cutting knives and shaft, characterized in that the distance between the bore (27; 34-) of the cutting knife (20; 32,33) ″ and the shaft surface is 1/10 to 5/10 mm amounts to. · 7. Assembly jig for carrying out the method according to a Ψ or more of Claims 1 to 3> characterized in that it has a central, height-adjustable receptacle (1?) For the shaft (21) and three vertical shafts (1, 2, \ 3), on which brackets (5) are attached to one another, each of which has three support points (19) arranged on a common plane for the cutting knives (2G). 8. Assembly jig according to claim 7 »thereby drawing g ek e η η t, - that the vertical waves (1, -2, 3) • are designed to be pivotable together with the consoles. 309 825/0431 BATH ORIGINAL 21 & 05U -13- 'November 27, 1971 ... 9. assembly jig according to claim 7 or 8, characterized in that g e k e n'n, that the consoles (5) have bores through which the shaft ends 2, 3) extend, with these being arranged one below the other on a shaft Consoles by means of tongue and groove (4) on the Shaft are attached. . "" - '· .. ".. _ · 10. Assembly jig according to one or more of claims 7 ' to 9 »thereby g e k e η η ζ e i c h η e t that the Consoles (5) each arranged on a shaft (2) all stops (6) for fixing the pivoted position own the cutting knife (20). 11. Assembly jig for assembling a cutting knife, pair according to the method according to claim 2, characterized • "marked that they for a reason- '' plate (30) and a cover plate with precisely machined, opposing inner sides, to which , the cutting knife (32,33) / the machined sides C32a, 33aJrfest, and aligned with inner bore (3 ^) on a central pin (3I) - can be placed, with a ball (44 - ·, 4-5) is used. . · 12. Assembly jig according to claim 11, characterized in that g e k e η η draw t that as a spacer several balls . (44,45) with very small diameters that differ from one another to serve. ...- ' 13. Assembly jig according to claim 12, characterized in that g e k e η η - Show that the balls are balls from a single manufacturing batch. 14. Assembly jig according to claim I3, characterized in that g e k e η η ze I don't think the balls come from a single one Ball-bearing . 309825/0431 BAD ORDINAL