JPS5813429A - Rolling mill for manufacturing continuous spiral - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to metal plastic working technology, and more specifically, to a rolling mill for manufacturing continuous spirals, which are used to produce lip or ring material for pipes in excavations. It is used as such.

The invention is particularly suitable for producing standard size continuous spirals used in the production of friction discs for essential latches in truck tractors, motor vehicles and agricultural vehicles.

A rolling mill for continuous spiral production, comprising a stand with two rolls on parallel shafts mounted in a housing, and a mandrel arranged downstream of the stand for winding the spiral emerging from the stand. German Patent No. 9μ't, 6qb) is known. Both rolls are provided with reservoir flanges that limit the strip that is rolled between them. One of these rolls blurs the frustum so as to apply uneven pressure along the width of the strip, thereby bending the strip into a spiral, and at the same time the spiral is wound onto a mandrel. , the strip assumes a wedge-like cross-sectional shape due to the unconstrained constriction along its width.

It is clear that spirals made from such strips are unsuitable for manufacturing friction discs. This is because the friction disk must have a rectangular cross section. Furthermore, this rolling mill is suitable for producing only one standard size spiral, and when this spiral is simultaneously wound onto a mandrel, it maintains a defined diameter along the length of the coil without the use of sizing means. It is impossible to do so.

Another continuous spiral M-forming rolling machine ( Patent No. 1 of the Federal Republic of Germany,
/? '7, SQS) is well known.

This structure is also effective for sizing the spiral along its outer diameter.

The rolls are mounted in a common housing, the axes of which are at an angle to each other, and the rolls are connected to a rotary drive and a device for adjusting the spacing of their axes. A predetermined amount of bending of the strip exiting the stand is performed by small diameter rolls. This means that during operation, the strip exiting from the stand exits in the direction of small diameter rolls and is bent and further sent to the sheet of the guide 7 bending device where it is rolled into a spiral with a predetermined pitch and outside diameter size. The shape of the vine means d.

However, the above-mentioned rolling mill does not in practice have the possibility of producing spirals of rectangular cross-section and of various standard sizes. This is because in order to transition from seven sizes to other sizes, it is necessary to adjust the roll nip and adjust the roll axis opening angle to produce a wedge-shaped spiral cross-sectional shape, resulting in different sizes. Creates a spiral diameter.

If the diameter is changed, the spiral is captured in the guide chute. Also, even if the spiral has the desired size, it may slide along the shoot against the frictional force between itself and the chute surface, increasing the number of coils and causing variations in diameter and pitch. Therefore, the drag resistance in the chute increases, resulting in the spiral being trapped,
This leads to the rolling process being interrupted. This undesirable phenomenon appears to be due to the corrugations present in the spiral strips, and also to the problem of removing the spirals from the spiral guiding/sizing device. This spiral can be removed by twisting it out of the guide sheet. Also, the spiral is sized only on its outer diameter in the guide chute, resulting in distortions in shape due to thermal contraction in the metal.

The present invention provides a variety of spirals with various ratios of width and thickness and diameter and width, and also provides a rolling mill for continuous spiral production that exhibits reliable operation in compliance with predetermined diameters and shapes. It is.

conical rolls fixed on cantilever shafts mounted inside the housing with their respective axes forming a constant angle to each other, and connected to a rotary drive and a device for adjusting the axial opening angle of the cantilever shafts; A rolling mill for continuous spiral manufacturing, comprising a stand including a stand, and a device for guiding and bending a spiral emerging from the stand, the rolling mill being mounted on the housing by a journal;
a tubular shell for receiving a cantilevered shaft of said roll; - a rotary drive mounting platform connected to each tubular shell and also connected to a device for adjusting the axial spacing of said cantilevered shaft; disposed downstream of the spiral guiding/bending device and including an axially movable mandrel comprising a plurality of segments and coupled to a rotary drive, a spiral single compression mechanism and a mechanism for removing the mandrel from the spiral; The above-mentioned objects of the invention are achieved by a rolling mill for continuous spiral production, which is equipped with a winder.

By mounting the roll-carrying shafts on the stand by means of tubular shells connected to platforms with their respective drives, and by connecting to each platform a device for adjusting the axial opening angle of the roll shafts, In addition, by equipping the winder mentioned above, the rotation speed and bevel angle of the roll axis can be controlled separately, and the inner and outer diameters of the spiral coming out of the stand can be sized.
Spirals having various width-to-thickness and diameter-to-width ratios can be manufactured more reliably and while strictly adhering to predetermined dimensions and shapes.

The device for removing the mandrel from the spiral in the winder includes a spacing sleeve disposed inside the mandrel and sliding axially on a guide shaft pivotally connected to each segment, and a position of the spacing sleeve on the guide shaft. It is preferable to configure it as a lock that controls the

A spiral guiding/bending device includes a feeder in the no-ujifugu including at least one pair of rollers disposed upstream of the forming rolls and a spiral guide/bending device disposed downstream of the forming rolls for arcuate movement of the strip in said housing. It is desirable to have a bending mechanism that includes attached bending rollers and forming rollers.

In another embodiment of the invention, the shaft of the mandrel is
The surface 8 on which the bending/forming roller is arranged is offset by 1 distance 0.3 to 3.0 times the middle of the processing surface of the work roll with respect to the surface passing through the axis of the work roll. For P, which is perpendicular to the plane passing through the axis of , O~3
It forms an angle α in the range 0°.

Further, the mechanism for compressing the snow-dried material in the winder includes a guide column having an axis parallel to the axis of the mandrel, and a guide column arranged around the mandrel and spaced apart from the mandrel. an annular member connected to a guide post and a balance carriage to allow the annular member to move along the guide post; a rotatable cantilever beam disposed on the rotatable cantilever beam; a support roller mounted on the rotatable cantilever beam; and a ring adapted to be received within the intersegment spaces of the mandrel.

The arrangement of the spiral guiding/bending device and the winder relative to the work roll and the spiral single compression mechanism as described above are effective in the production of continuous spirals having outside diameters of 330 lll11 and above.

Another embodiment of the rolling mill of the invention includes a hollow work roll, the winder mandrel is partially recessed into the hollow part of the work roll, and the spiral compaction mechanism includes a bar, the bar having one end Equipped with a spring, and a mandrel □ in the hollow part of the hole.

At one end of the bar, which is disposed downwardly and trenched,
Via a thrust bearing, the bar is connected to the guide shaft of a mechanism for removing the mandrel from the spiral, and at its other end, the bar is connected via the spring to the bottom of the hollow part of the Karoe roll, and also to the hollow part of the processing roll. protruding from L
A thrust ring is placed on the end of the mandrel,
Furthermore, the spiral guiding/bending device includes a guide ring with oblique slots, which guide ring is arranged around the mandrel intermediate the thrust ring and the work roll.

Due to its simplified design and dimensions, this embodiment is effective for manufacturing spirals with small external diameters (up to 3!;0 dragons).

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments shown in the drawings.

Referring to FIGS. 1 and 2, the rolling mill for producing a continuous spiral from a strip L includes a stand mill, a guide 7 for the spiral 3 coming out of this stand 2, and a bending device 3, and a winder S. .

Stand 2 (Figures 3 to 6) (d:, cantilever shaft t,
It has a pair of rolls 6.7 fitted with qVc, and these feet 1. Inside the housing 10, their axes are arranged at a constant angle to each other, and each shaft is arranged connected to a rotary drive/l and an inter-axis angle adjusting device/co, respectively. Hur.More details t, < is roll 6.
7 are each attached by screw/nut devices onto the axes t, 9. Such a construction has the advantage that roll change operations can be carried out rapidly when transitioning from one size of the spiral to another, or when it is necessary to adjust their relative positions.

Axis, 91. are each supported on a support member /3 (FIG. 6), and these support members /3 are respectively supported on a tubular shell 14! Inside C
τ, and the axes of these support members preferably lie in the same vertical plane. The tubular shells have a journal 15 and a platform rigidly attached to these shells.
6. These journals have two pairs of pads placed inside the window of stand 10.
It was tied for 7. In the middle of each pair of pads/7,
An elastic member iq that balances the upper roll 6 is provided.

This elastic member can be a spring, a hydraulic cylinder and the like.

Indigo stunt cover (Figure 3), including Il+1lI617 axis angle adjustment device 1m/2. This arrangement accommodates an adjustment screw J mounted on the no. 1 screw no. 10 and a master screw J, 2/ similarly pivotally mounted on the respective platform /6. The other end of each lead screw 2/ is pivoted into an opening a2 on the base 23 of the housing IO by means of a spherical washer and a nut. With this adjustment device, the roll nip can be finely adjusted to form a spiral with the desired cross section, regardless of the roll thickness.

A winder S arranged downstream of the guide 7 bending device 3 has a mandrel 24 (FIGS. 1 and 2) consisting of each segment 1B.
(Figure) included. The mandrel J is mechanically coupled to a rotary drive (not shown), a spiral single compression mechanism, and a mechanism for removing the mandrel from the spiral. In this case, the transition from one size of the spiral to the other size V is removed by l+! The rotational speed of III and the bevel angle of the shaft are controlled separately, and the spiral is reliably wound on a split type mandrel or crush type mandrel having an outer diameter of 1. With excellent reliability (without the spiral sticking in the guide 7 bending device) -! It is possible to manufacture spirals in a wide size range, closely matching the predetermined dimensions.

The mechanism for separating the mandrel shaft from the spiral ψ is in the form of a separating sleeve (Figs. 7 and 2), which is slidably fitted so as to move in the axial direction along the guide shaft 27. This is desirable.

The guide shaft 27 is arranged inside the mandrel J along its center line and can be pivoted directly to each segment (FIG. 1IA) or via the rond 2g and sleeve 2.6 to each segment). # [is pivotally mounted to (Fig. 1O). The guide 7 bending device M3 preferably includes a feeder consisting of a pair of rollers 30 arranged upstream of the roll 6.7 and a bending mechanism arranged downstream of the roll 6.7. Both the feeder and bending mechanism are housed within the housing (FIG. 9). The bending mechanism includes bending/forming rollers J/, 32, which are arranged in an arcuate relationship inside the housing/guko 9 to produce an arcuate radial movement.

The shaft 33 of the mandrel J of the winder S is spaced apart from a plane P (FIG. 7) K passing through the axis of the roll 6°7, and this distance is equal to 0 of the width of the machined surface of the roll 6 or 7.
．． The range is 3 to 3.0 times. Bending/forming roller 3/,
3: The plane S in which l is arranged forms an angle α in the range 0 to 30° with P perpendicular to the vertical plane passing through the axis of the roll 6.7.

In the case of a deviation from the above-mentioned distance and angle α, the spiral emerging from the roll nip and guide 7 bending device 3 will not be wound onto the winder S.

Roll 6? In such an arrangement of the winder and the guide 7 bending device, the spiral compression mechanism in the winder is constructed as follows.

An annular member 31A (FIGS. IO to 13) is arranged around the mandrel J at regular intervals from the mandrel. The rim of the annular member 3μ has a protrusion 3S, which has an opening for mounting the annular member 31Af on a guide post 36 axially parallel to the mandrel 2μ. Rotatable cantilever burrs are arranged along the outer periphery of the annular member 3, and the axes of these cantilever burrs are parallel to the axis of the mandrel J.

These cantilever pins 37 are provided with support rollers 3g. These rollers 3g carry a ring 3q which has radial projections on its inner circumferential surface. These projections are received in the segments z of the mandrel, 2&. The annular member 3 is balanced by a weight block 1 via a pulley block 2. The rotatable cantilevered burrs 37 are driven by a mechanism that rotates these cantilevered burrs synchronously about an axis parallel to the axis of the mandrel 2μ. 5
This mechanism is a lever t13 connected to a cantilever burr via a sprocket and a Thule bar.

In this embodiment, the mandrel shaft 33 is substantially vertical, hollow and mounted on the plate IA as a cover of the housing ψ7 and connected via a gear train to a rotary drive (not shown). This cover plate 14 is provided with radial slots V? (FIG. 13) for passing the spiral into the winder S.

Rollers 50 are provided on the inner surface of the plate t6 to reduce friction between the upper turn of the spiral heel and the plate t. The upper part of the mandrel is provided with a sizing section S/. This device is effective for producing spirals with a diameter of 330 mm or more.

According to another embodiment of the invention, one roll 6 (first
The roll (Figs. 1 to 1) is hollow, and the mandrel J is partially arranged in the hollow part of this roll. In this structure, the mechanism for compressing the spiral U is arranged between a bar 54 received in the hollow of the roll base downstream of the mandrel die and around the distal end of the mandrel J protruding from the hollow of the roll 6. s hfc, X 5-X)
, , , lJ y / jJ and lend money. One end of the bar S is connected to the guide shaft 27 via the outside of the thrust bearing, while the other end of the bar 3 is connected to a spring SS fixed to the bottom of the hollow part of the roll base. Bar criminals are key,
56, and the hollow part of the roll base is still provided with a vertical key groove 57. A lock 5g is provided on the sleeve 26 to adjust the outer diameter of the mandrel, 2μ. This lock 5g has an end that is received in a slot 59 on the guide shaft core.

The guide 7 bending arrangement@3 of this embodiment further includes a guide ring 6o with an oblique slot 6/.

This ring slides on the mandrel J and is placed intermediate the thrust ring 33 and the guide/movement device 3. This construction is suitable for manufacturing spirals up to 330 mm in diameter.

In operation of this construction, a pre-rolled and pre-heated strip l of a given wedge-shaped cross-section is trench-rolled by rolls 6.7 to the desired thickness and cross-section. The required amount of nip between these rolls 6 and 7 is set by the adjustment device 12 in a conventional manner, taking into account the adjustment screw o1 and the taper of the rolls 6°7. In this case, please use the adjustment screw 2o and the lead screw 2 so that the axis of the axis t changes its position by moving upward (or downward) VC parallel to its initial position.
Use 1. This allows the thickness of the strip to be controlled, but does not change the cross-sectional shape of the IJ tube. In order to vary the thickness and cross-sectional shape of the strip, the angle between the axes lr, 9 is varied by the leadscrew,! / and set the roll nip by adjusting screw 20.

The spiral +d emerging from the stunt coil has a wedge-shaped opening that forms the cross-sectional shape of the strip and a curvature that depends on the amount of taper of the rolls 6 and 7 (Fig. 9); the larger the wedge opening and the roll taper, the more the curvature. The radius becomes smaller.

When the rolling mill is in operation, by varying the rotational speed of one of the rolls by means of the corresponding drive, the bending direction of the spiral can be varied, and the size of the spiral can also be varied.

In embodiments producing spirals with a diameter of 330 inches or larger, the rolled spiral is fed to bending/forming rollers J/, , ? and then sent to the winder through the diagonal slots of the cover play (QA). Therefore, the forming rollers 31 and 3 are arranged so that they form an angle α of Q~3o0 with respect to the plane P that is perpendicular to the plane passing through the axis of the rolls 6 and In order to feed the spiral through the diagonal slot onto the finder S, the more irregular the diameter of the spiral, the smaller this angle α must be. In order to manufacture, the mandrel co-hiro @331 must be offset to the point P by a distance a that is 0.3 times the width of the machined surface of the roll 6 or girder (Fig. 7). If the interval is equal to three times the middle upper part of the processed surface of the roll, the spiral Iri
It will have the largest outer diameter. The rolled spiral is bent to a desired diameter by rollers J/IC, and then rolled by rollers 3 and 3.
along the winder sVc is sent through the slotted
It is wound onto the sizing portion Sl of the mandrel J between the scolding O and the rotating ring 3q. As each single action of Spiral Hiro is accumulated on the sizing part S/ (
(Fig. io), these spirals are sizing section 3.
/ Push down to the small diameter part. Also, the ring 39 is lowered and acts on the annular member 3 through the support rod 0.1g and the rotatable cantilever beam 37, and this annular member
2 (FIG. 1O) or the like, descend along the guide column 36.

This annular member 3≠ is
/, so compressive pressure is applied to the single u of Spiral Hiro. After the spiral is wound up, 3g of rollers are removed from under the ring 39, and the spiral is turned into a ring. It is removed from the winder S together with the water.

If the spiral cools down and sticks on the sizing part S/ at the start of the winding operation, the positioning hook 63 of the spacing sleeve lowers this sleeve 26 and pulls the rod g. Segment J also descends together with this, reducing the diameter of mandrel J and freeing spiral ψ.

Next for the cycle, ring 39 is again placed on the mandrel J.
The lever 3 presses the roller 3g against the underside of the ring 39, and the ring 39 is returned to its initial position by the balanced weight t/.

3! If a spiral with an outer diameter of less than
It passes through 1 and reaches winder S. The end of the spiral, together with the guide ring 6o and the mandrel J, [cJ
It is fixed in the middle with the rotating thrust ring S3, and in this way the spiral is wound up.

As the single spiral is deposited on the mandrel J,
The mandrel 2/I, together with the guide shaft, is extended from the hollow part of the roll 6, entraining the bar Sa and extending the spring 5S. Therefore, the single episode of Spiral Hiro is compressed. When the winding operation is completed, the lock Sg is attached to the annular group S9.
The spacing sleeve 26 is moved along the guide shaft 27 and the segments Δ are driven together to reduce the mandrel diameter. The thrust string 53 and the segment J are separated, and the spiral t is removed from the mandrel 2q together with the thrust string S3.
The action of is pulled into the tyrol group. Again the thrust ring S3 is slipped onto the mandrel diameter μ and the segment j is expanded by the spacing sleeve 2B to fix the thrust ring S3 onto the mandrel J. The spacing sleeve roller is then held by lock 3g and the compacting machine is ready for the next cycle.

To explain in more detail: - For example, width 37 ~ crime phoenix,
Thick edges7. Wedge-shaped cross-section strips of S-De, S-Dragon, and thin-edge 3-6M wings were rolled. This strip was rolled in a conical roll with a conical bottom diameter of 130+n and a taper of 75 to 10.

In the apparatus shown in FIG. 1, an IJ tube 1 was rolled into a roll 6.7 and squeezed to a ring size of 3 to 6 mm to form a rectangular cross section. The spiral exiting from the exit side of the rolling standco had a radius of curvature in the range 5OO-ZOOIII. Bending roller 3/ has a radius of curvature of 300~! 00
The size was reduced to ta, but the sizing was done using forming roller 3.
It was carried out by 2.

Due to the design of this stuntco, if the axial angles of the axes t and 9 are properly adjusted, the strip I will be partially twisted as a result of the unconstrained squeezing of the strip in the medial direction by the conical roller 6°. 5 The stress acting on the bending roller 3/ is reduced. The bending roller 3/ and the forming roller 32 allow stepless reduction of the radius of curvature and sizing of the outer diameter, respectively. The same V-section strip was used to produce a plurality of spirals with different width/thickness ratios of the cross-section and different diameters and widths of the spiral turns. This is achieved by suitably adjusting the bevel angle of the roll axis and by suitably offsetting the mandrel relative to the plane passing through the roll axis, as described above.

For example, maximum diameter 2! ; Omw, using a roll of Tebayu 10, width 37 silk, thick edge '11111. A thin connection! , Ssn
V @ side) From the IJ knob, the outer diameter of each! /7 m
, tI2'7 sum, 3fOtayi, Hiroshi Naidai 3?
win, 3u'l #111. and 30011m
1 spiral was prepared. Each of these spirals has a single thickness! ;、! ;arm, 3. Ow
They were in order of a, S, O, and width. Hiro7xIJ
x! ;、! ; From the connection strip s:lo x u:2o
x! ;Dragon Spiral has been manufactured, and again! / x 7
．． From t x 3.3 tm strip, width/thickness ratio s
s:s~ii'A30X3YOX! ;ta spiral was produced.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of an IE rolling mill for producing continuous spirals with an outer diameter of 3SOIII+1 or more, and is a cross-sectional view of the rolling mill, and Fig. 2 is a schematic diagram of an IE rolling mill for producing continuous spirals with an outer diameter of 33° Iml. FIG. 3 is a schematic diagram of the stand of the rolling mill of the present invention, FIG. 3 is a partial sectional view of the stand of FIG. 3, and FIG. 3 is a plan view of the stand, FIG. 6 is a partial view of the stand, FIG. 7 is a plan view of the spiral guide 7 bending device, and FIG. 7 is a schematic diagram showing the relative position of the spiral guide 7 bending device and the work roll. , @9 is a schematic diagram showing the process of forming a strip into a spiral, FIG. Plan view, 1st U drawing is along the ■-■ line of 10th drawing □
"1.1 A cross-sectional view, Figure 73 is 3j; A partial oblique view of a bending device for spirals sent to the winder of a rolling mill for continuous spiral manufacturing having an outer diameter of 0 mm or more, Figure 1 is 33; O
Partial view of a rolling mill for continuous spiral production up to mm, No. 7
Figure 5 is a sectional view taken along the line xv-xv of Figure 1, and Figure 76 is a perspective view of the prefecture in the direction of arrow 0 in Figure 74'. ...Strip, Co...Stand, 3...Spiral guide 7 bending, φ...Spiral, S...
Winder, 6, 7 work roll, r, q...roll axis, 10...housing, /2...roll axis angle adjustment device, /da...work body, 15... Shell journal, /Otsu...Rotating drive platform, J...
・Mandrel 1. ZS...Segment 1.2A...
Separation sleeve 1, 27...Guide 1Ijjll, );
'／...Housing 1,? 0... Feeder support roller 1, ? /... Bending roller, 32... Forming roller, 33... Mandrel shaft, 3 pieces... Annular member, 36
...Guidance pillar? 7... Rotatable cantilever beam, 3g.
...Support roller, 3q...ring, Su...radial protrusion on ring, criminal...bar 1. 3...Thrust ring, part...Thrust bearing, sl',,";j;...
Spring, 60... Guide ring, 61... Diagonal slot in guide ring, K... Carriage, 63... Body 1 lock for spacing sleeve, P... Surface passing through the roll axis;
a... Distance between the winder 111 line and P, α... Angle between S and P, S... Surface where the bending roller and forming roller are placed, 1... Roll addition] 2 sides Width. Applicant's agent Kiyoshi Inomata f fE7 159-4 Continued from page 1 0 Inventor Nikolai Yuryevich Vapilov Soviet Union Kharkov Ulitsya Rybarko 4 Karbe 3 0 Inventor Anatoly Grigorievich Antonenko Soviet Union Kharkov Perew. Rok Nopolbavsky 8 0 Inventor Vasily Vasilyevich Galkawy Soviet Union Kharkov Uritsutsa Pyroch 148 Be Rikiichibe-40 0 Inventor Vitaliy Nikolaevitsch Krupenik Soviet Union Kharkov Uritsutsa Sumskaya 124 A. Karbe 13 0 Inventor Grigory Maksimovich Chapan Soviet Union Kharkov Uritsutsa Turda 49 Karbe 52 0 Inventor Vadeim Mikhailowitsch Schekin Soviet Union Kharkov Prospekt Dozhupy 5 Karbe 0 Inventor Evgeny Georgievich Kaznacheev USSR Kharkov Prospekt Lenina 59 Kabe 52 0 Inventor Grigory Akhnabouytschi Sagitov Soviet Union Kharkov Uritsutsa Metrovya 5 Kabe, 2 0 Inventor Nikolai Nikolaevitsch Dounaisky Soviet Union Union of Ningrad-Ulitsya Promyshlennaya 28 Kabe 128 0 Inventor Samuil Polisovich Federation of Ningrad Uritza II Inchirnatsuionala 14 Kabe 123

Claims (1)

[Claims] 8. Contains conical work rolls (A) l (?), each of which has a cantilevered axis (') r (
q) fixed on the housing (10), these axes
The respective axes are arranged at a constant angle with respect to each other inside the . In a rolling mill for continuous spiral production, comprising stands (2) adapted to be connected and a guide 7 bending device (3) for the spiral emerging from said stand (2), a journal (/S) is provided on said housing (Io). ) and the work roll (&) + (
axis CI) of 7), the tubular shell body (tlA) receiving (9)
), a rotary drive mounting platform (/6) connected to an axial opening angle adjusting device (/U) of each of the shafts fixedly fixed on the tubular shell (/L) and twisted, and the spiral guide. 7 It is placed downstream of the bending device (3) and can be used in the axial direction! IIl mandrel (,2M), this mandrel (24I-) has multiple segments (2s)
A rolling mill comprising a front rotary drive, a helical single compression mechanism, and a winder (5) connected to a mechanism for removing the mandrel from the spiral. The mechanism for removing the mandrel from the spiral in the winder (S) moves the guide shaft (27) located inside the mandrel (,; According to claim 1, the invention comprises a spacer sleeve mounted on the guide shaft (27) and a position lock (t3) for the spacer sleeve (26) on the guide shaft (27). rolling machine. 3. The spiral guide 7 bending device C3) I-i. The work roll (6) installed in the housing (:bq)
). (7) at least one pair of rollers downstream of (,?,0)
a feeder containing a bending roller and a forming roller (3i), located downstream of the processing rolls (A) + (7) and mounted in an arc in a housing (K9) for the arcuate movement of the strip; 3. A rolling mill according to claim 1 or claim 2, characterized in that the rolling mill has a bending mechanism comprising: 3x); ψ, shaft (33) of the mandrel (, W) of the winder (!;)
) is 0.3 of the unprocessed width (b) of work roll (6) and (7) with respect to the plane P passing through the axis of the work roll.
The surface S, on which the front bending/forming roller is located, is offset by a distance #(a) of 3.0 times, and is perpendicular to the plane passing through the axis of the work roll (A) l (7). P
, the mechanism for compressing the spiral single turn in the winder Ct) comprises a guide column (36) with an axis parallel to the axis of the mandrel (JI7). ) and mandrel (24z)
An annular member (3 hi) is arranged around the mandrel at a distance from the mandrel, and this annular member (3≠) is connected to a guide column (3t) and a flat carriage (A).
an annular member (,'?ψ) which is moved along the guide column (JA) K; A rotatable cantilever (37) arranged along the outer periphery of the annular member (3≠) so as to rotate in a line drawing, and a support roller (3) mounted on the cantilever (37). and the support roller (3g
) K, said inner protrusion comprising a ring (39) adapted to be received in the middle of the segment (, 25) of the mandrel (, 2g). 2. A rolling mill according to paragraph 2, residue section 2, or 3. 3- One of the work rolls (6) is hollow, the mandrel (,2a) of the winder (S) is partially received in this work roll hollow, said spiral compression mechanism is connected to the bar (S,2) This bar has a spring C3 at one end,
S) is placed 4 m downstream of the mandrel (21: ) in the hollow part of the processing roll (6), and this bar (see) has a thrust bearing (3≠) at one end.
from the spiral (4') to the mandrel (Jc
), and the other end is connected to the bottom of the hollow part of the processing roll (11) via the spring (S, 5'), and the workpiece - A thrust ring (53) is placed at the end of the single drell (J&) that protrudes from the hollow part of the drill ('□-).
the spiral guide 7 bending device (3) Q, including the entire guide ring (60) with diagonal slots (6/);
The guide ring (60) is arranged around the mandrel (2Q), intermediate the thrust link (phantom) and the processing roll (6). The rolling mill according to any one of paragraph 3.