TW446589B - Long product rolling mill - Google Patents

Long product rolling mill Download PDF

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Publication number
TW446589B
TW446589B TW87100258A TW87100258A TW446589B TW 446589 B TW446589 B TW 446589B TW 87100258 A TW87100258 A TW 87100258A TW 87100258 A TW87100258 A TW 87100258A TW 446589 B TW446589 B TW 446589B
Authority
TW
Taiwan
Prior art keywords
roll
shaft
cover
driving force
rolling mill
Prior art date
Application number
TW87100258A
Other languages
Chinese (zh)
Inventor
Masamitsu Nakaya
Yasunori Matsuda
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP00328797A priority Critical patent/JP3535946B2/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Application granted granted Critical
Publication of TW446589B publication Critical patent/TW446589B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/005Cantilevered roll stands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B2031/023Transverse shifting one housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02Shape or construction of rolls
    • B21B27/03Sleeved rolls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/06Fastening stands or frames to foundation, e.g. to the sole plate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16Adjusting or positioning rolls
    • B21B31/18Adjusting or positioning rolls by moving rolls axially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B35/00Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills

Abstract

The caliber change for a working roll 8 having a plurality of calibers C1, C2 on its outer peripheral surface has heretofore involved the operation of removing the working roll 8 from the tip of a roll supporting shaft on a pass line P. This operation requires a long time, thus resulting in deterioration of productivity. A roll housing 7 capable of shifting in the axial direction of the working roll 8 is provided separately from a bevel gear box 6, and the caliber change is performed by shifting the housing 7. For absorbing a change in axial length of a driving force transfer path with a shifting motion of the housing 7, an axially protrudable/retractable means such as a spline shaft 25 is provided in the said path. Since it is not necessary to remove the working roll 8 at the time of caliber change, the caliber changing work becomes easier and the time required is shortened, so that the productivity is improved.

Description

446589 Printed by the Consumer Standards Cooperative of the Central Bureau of Standards of the Ministry of Defense ^ > A7 B7 V. Description of the Invention (1) Field of the Invention = The present invention relates to a strip rolling mill in which processing rolls are placed on each end of a pair of roll support shafts. .

Background of the invention Z ----_-- 1 --- Y ------ 1T ^ --- ^ --- ^ --- li-5-β (艿 Page) 4 4 6 5 8 9 Α? B7 V. Description of the invention (2) Rotational force β from the shaft 5 5 In addition, the two roll support shafts 5 8 and 5 8 are respectively embedded with a connection gap adjustment mechanism The eccentric sleeve (not shown) is supported in the frame 51 by the operation of the gap adjustment mechanism, which can change the rotation angle of the eccentric sleeve. Therefore, the roller support shafts 5 8 and 5 8 can When the above-mentioned auxiliary gears 58 a, 58 a and the first and second spur gears 5 6 t >, 5 7 a are respectively maintained in meshing state, the distance between the two axes is changed to adjust the processing rolls 52, 52. Crevice. When using the processing rolls 52 and 52 formed by a plurality of holes on the outer periphery, when the holes are worn or the holes of other sizes are replaced during the rolling process * the processing rolls 5 2 and 5 2 are replaced with the replacement state * to make other holes The grooves are located on the transmission line P, instead of the holes and grooves on the transmission line P, and the hole and groove exchange is performed. "The hole and groove exchange operation will be described with reference to Fig. 14". In Fig. 14, there are 4 outer circumferences of the processing roll 5 2 Hole grooves C 1 to C 4, the first hole groove C 1 on one end face is located on the transmission line P • fixed at the end of the roller support shaft 5 8 "printed by the Central Bureau of Standards of the Ministry of Economic Affairs-Industrial Consumers Cooperatives { Please read this first and note the following: Fill out this page each time.> When changing the slot from this state, for example, when the second slot C 2 adjacent to the first slot C 1 is on the transmission line, First * Remove the roller fastening cover 60 screwed to the end of the roller support shaft 5 8 from the roller support shaft 5 8, and then remove the processing roller 5 2 and the spacer 61 from the roller support shaft in order. Then, the order of the processing roll 52 and the shim 61 is exchanged, and as shown in FIG. 15, the processing roll 52 and the shim 61 are sequentially inserted into the roll support shaft 58, and then the cover 60 is fastened to the roll with the roll. The ends of the support shaft 58 are fixed. In this way, the second hole slot C 2 is located on the Fu line. The national standard of this paper is applicable. B National Standard {CNS) A4 «L Grid (2 丨 0X297) 漦 -5- P 446589 A7 B7 V. Description of the invention (3) . The same operation as above is performed on the other processing rolls 52 not shown in the figure, and the hole and groove exchange is completed. In addition, if the third groove C 3 and the fourth hole C 4 are to be exchanged on the transmission line, the processing roll 5 2 is pulled out and turned axially, and then the first roll 4 Figure, Figure 15 shows the installation work. In this way, the slot changing operation for attaching and detaching the processing roll 55 from the roll support shaft 58 is usually performed on a transmission line. [Problems to be Solved] As mentioned above, the above-mentioned slot-and-groove exchange operation with processing roll loading and unloading on the Fushen line previously required a lot of time and labor (for example, 10 racks took about 6 people x 30 minutes) * This creates a problem of significantly lower productivity. In addition, the positions of the holes and grooves of the rolls in the frame may deviate from the desired position due to assembly errors, manufacturing errors of the rolls and grooves, etc. • When such deviations occur from the arrangement position between adjacent frames, as shown in Figure 15 It is necessary to further adjust with the gasket 6 2 to make the hole and groove exchange operation more difficult. ^ ¾'In the Ministry of Justice, the Bureau of Labor and Consumer Cooperatives, ^ The present invention addresses the previous problems, and its purpose is to provide an easy exchange of holes and grooves, thereby improving productivity and workability, and further simplifying the overall structure of the device. "Rolling mill for steel" "Objective and description of the invention: [Method to solve the problem] In order to achieve the above-mentioned objective, the present invention is characterized by applying for a profit scope of -6- (Please read the precautions on the back before filling in this page ) This paper size applies to the Chinese National Standard (CNS > A4 size (210X297 cm) A7 B7 V. Description of the invention u) The first strip mill is equipped with the above-mentioned stand mounted on the conveying line facing the rolled product. A strip mill is provided in parallel with a pair of processing rolls, each of which is supported at one end and has a plurality of slots on the outer circumference. The processing rolls are provided with movable parts that can move in correspondence with the slot intervals in the axial direction. The supporting processing roll and the movable member move integrally. According to the above-mentioned structure, it is possible to exchange the slots only by moving the movable part by a certain distance according to the intervals between the slots. That is, it is not necessary to perform the work of loading and unloading the processing rolls as before, which makes the work simple and shortens the work time. Printed by the Ministry of Economic Affairs of the Ministry of Economic Affairs of the K-Consumer Cooperative Cooperative (Please read the precautions on the back before filling out this page) The feature of the present invention is that the strip rolling mill with the scope of patent application No. 2 starts from the A driving force transmission shaft and an intermediate transmission shaft, a pair of roll support shafts, and a pair of roll support shafts of the drive force input member to the other end are provided in parallel with each other. The processing rolls are coaxially provided on the end faces of the roll support shafts. The shaft receives the rotational driving force input from the driving force input member that drives the feed shaft and the intermediate transmission shaft, and the driving force transmission line composed of the shaft member is set to maintain a radial overlap state of transmitting the rotational driving force. Axial telescopic function that can be telescopic in the axial direction. In this way, since the axial telescopic mechanism is provided in the driving force transmission line, the movement of the movable member can be performed without changing the position of the driving force input member to exchange the slot. Therefore, even with the structure of the above-mentioned unit, even if the transmission line rotation shaft distributes the driving force to each frame, it is not necessary to provide the feed line rotation shaft to correct each driving force input position in each frame. The deviating joint structure of the 10,000-meat bun makes the high-productivity high-speed paper standard fast in China's B-standard rate (CNS > A4 this grid (210X297) 1 > Printed 446589 A7 B7 V. Description of the invention (5) The speed operation is performed more stably. For the movable parts and the axial telescopic mechanism, for example, the Heyuan Army can be used as the driving force input part as described in the third patent application scope. The fixed cover on the upper side is separated from the roller cover which supports the roller support shaft as a movable member, and then a spline shaft is provided in the middle of the shaft member extending from the fixed cover to the roller cover to realize the axial telescopic function. In addition, the axial telescopic mechanism Alternatively, as described in item 4 of the patent application, a gear device that moves in the direction of the tooth width with the roll cover and is in an intermeshing state to transmit the driving force may be used. It is constructed by being placed on the shaft member supported in the fixed cover and the shaft member supported in the roll cover. This type of construction does not require a separate shaft joint such as the spline shaft described above. The overall structure can be simpler. In this case, as described in item 5 of the scope of patent application, if the gear on the roll cover side is provided with a structure capable of detaching the end face of the shaft member protruding from the roll cover to the fixed cover side, the gears can be easily exchanged. For example, in the above-mentioned unit structure, the number of gear teeth in the rotation force transmission path in each frame is changed, and the number of rotations of the processing rolls is sequentially increased along the conveying line. On the other hand, the roll cover is removed in order to exchange bearings. In general, the replacement roll cover is usually replaced. If the gears for determining the number of rotations of the processing roll can be easily attached and detached as described above, the backup roll army can be shared. Also, as in item 6 of the scope of patent application, a roll cover can be provided for processing. A mechanism for the axial movement of the roll. If this movement mechanism has a radial overlap state of the telescopic mechanism in the axial direction, The structure of the stroke of the cover is released, and the roll cover can be moved to a position where it may be lifted. The paper standard is applicable to the standard of homelessness (CNS) A4 * Ufr (210X297 mm) -8- (Please read the back first Please pay attention to this page and fill in this page again) ^-4 4 6 5 8 9 Α7 Β7 Printed by the Central Laboratories of the Ministry of Economic Affairs, Shelley Consumer Cooperative ¾ V. Description of the invention (6) The above-mentioned roller bearing support bearing repair work will become easy ε That is, when the roll cover is transported to the maintenance work area in order to exchange the above-mentioned bearings, the roll cover must be separated from the fixed cover and moved to a position that does not interfere with the fixed cover before the crane lifts the roll cover. This movement can make use of holes When the tank is changed, the moving mechanism for moving the roll cover is completed, so it is not necessary to install a moving device and work, which makes the work easier. In the strip rolling mill under the scope of patent application No. 7, the above-mentioned movable parts are embedded in one It consists of an eccentric sleeve that supports these roll support shafts outside the roll support shafts and inside the roll cover. And as an axial telescopic component * A gear that shifts in the tooth width direction with the axial movement of the eccentric sleeve and is in an intermeshing state to transmit the driving force is provided on the roller support shaft and the intermediate drive shaft. In this structure • The eccentric sleeve can be moved axially to exchange holes. Compared with the above-mentioned moving of the roll cover for the replacement of the holes and grooves, the moving object becomes lighter at this time. The structure of the part that moves automatically becomes simpler and the cost is lower. In addition, the axial telescopic mechanism is composed of gears. Design special parts with axial telescopic function, so that the overall structure can be simpler. In the strip rolling mill under the scope of application for patent No. 8, the above-mentioned movable member is composed of a roll support shaft. That is, as an axial telescopic component, gears that shift in the tooth width direction with the axial movement of the roll support shaft and are engaged with each other to transmit driving force are provided on the roll support shaft and the intermediate drive shaft. In this structure, the object to be moved during the slot exchange is the roller support shaft, so the moving object is lighter and smaller. The same as the above, the overall structure is simpler. (Please read the precautions on the back * before filling this page) wf Order JI. This paper size is applicable to the Chinese standard (CNS) A4 (210 × 29Ίmm > -9-446589 A7 B7 V. Description of the invention (7) In the strip rolling mill of the 9th patent scope, a A position detector that can check the amount of movement of the movable member. In this structure, after the operation of moving the movable member for the slot exchange is started, the signal detected by the position detector can obtain the time when the movable member arrives and stops operation. That is, these operations do not need to be confirmed by visually inspecting the change of the axial displacement of the processing roll near the conveying line, and may be performed from a long distance. Brief description of the figure = Brief description of the attached circle The first figure shows A longitudinal sectional view of a strip rolling mill constituting a unit in the embodiment: FIG. 2 is a cross-sectional view showing a main part of a processing roll and a processing roll support shaft of the above rolling mill: FIG. 3 is a view showing X of FIG. 2 Sectional view taken along line _X; FIG. 4 is a plan view showing the overall composition of the above unit: FIG. 5 is a front view showing a strip rolling mill constituting the unit in another embodiment of the present invention: Printed by the cooperative Figure 6 is a cross-sectional view showing the internal structure of the stand in the rolling mill shown in Figure 5 Figure 7 is a cross-sectional view showing the state after the roll change from the state shown in Figure 6; Figure 8 is shown in Figure 5 Sectional view of the state of the cover of the rolling mill when it is exchanged: Section 9 鼷 is a sectional view showing a frame structure of another embodiment of the present invention. -10 · (Please read the precautions on the back before filling this page) Applicable to China's homes (CNS) A4 (210X297 mm) 446589 A7 B7 Printing of Qibu Central Cotton Standard Bureau Tooling Consumer Cooperatives V. Description of the invention (8) Figure 10 shows the invention Sectional view of the structure of the main part of a strip rolling mill according to another embodiment. (A) is a front view of the main part of the roll support shaft and the processing roll. (B) is the state when the slot is exchanged from the state of (a) Front view of main parts; Figure 11 shows Some schematic diagrams of the structure of the unit; Figure 12 is a schematic diagram showing the structure of the rotary driving force transmission mechanism from the power shaft to the processing roll in the unit shown in Figure 11: Figure 13 shows Y—Figure 12 Sectional view of the Y line: FIG. 14 is a cross-sectional view showing the main part of the installation structure of the processing roll on the end surface of the roll support shaft with an example: and FIG. 15 is a view showing the main installation state of the processing roll of FIG. Sectional view β Drawing number comparison description = 3 a——active helical gear (driving force input part) 4——roller frame, 6—helical gear box (fixed cover) 7—roller cover (movable part), 8—— Processing rolls 10--drive Fu Shaft, 11--first intermediate drive shaft 12--second intermediate drive shaft * 1 8--roller support shaft 2 1--eccentric sleeve, 2 5--shaft joint (spline) (Shaft, axial telescopic mechanism) 2 6-cover moving brake (moving mechanism) P-conveying line, C1, C2-hole slot. (诮 Please read the notes on the back before filling this page) < CNS) A4 size (210X297 male) -11-446589 A7 B7 To the Central Ministry of Economic Affairs Industrial and Consumer Cooperatives Co., Ltd. 5. Description of the Invention (9) Detailed Description of the Invention = [Embodiment 1] Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in FIG. 4, the steel bar rolling mill of this embodiment is composed of two power shafts 3 and 3 driven by a rolling mill driving motor 1 through a speed increasing machine 2. These two power shafts 3 and 3 sandwich the conveying line P of rolling stock, such as carousel, and are arranged on both sides of the conveying line in parallel with the feed line, respectively. Between the power shafts 3, 3 and the transmission line, 10 roll stands 4 are arranged along the rolling conveying line P to form a rolling unit. As shown in FIG. 1, these roll stands 4 ... pass through and convey the line. P The vertical line V c is symmetrical on the left and right centers. They are placed on inclined support surfaces supported by the central abutment 5 a and the lateral abutments 5 b and 5 b on both sides of the central abutment. In addition, the structures of each of the roll stands 4... Are the same as each other. Furthermore, the roll stands 4 and 4 on the left and right sides sandwiching the conveying line P are not significantly different in structure. The left roll stand 4 shown in the figure is described as an example. The roll stand 4 is composed of a helical gear box (fixed cover) 6 provided on the inclined support surface of the side abutment 5 b and a central abutment 5 a diagonally above it. It consists of a roll cover 7 on an inclined support surface. The helical gear box 6 supports the power shaft 3 passing through the v helical gear box 6 horizontally, and a pair of protrusions are provided in the roll cover 7 to protrude outward from the upper end surface 7 a which intersects the horizontal line H c of the transmission line. Force p workers rolls 8,8. In order to transmit the rotational power from the power shaft 3 to these processing rolls 8 (Please read the back & note ^ item before filling out this page) Order ^ Η · • / — ^ 1 This paper is applicable Standard (CNS > A4At grid (2 丨 0 × 297mm > -12- 446589) A7 B7 V. Description of the invention (10), 8, provided with a certain length, extending from the helical gear box 6 to the roll cover The power Fu moving shaft 10, while the first and second intermediate drive shafts 1 1 and 12 are installed in the roll cover 7 at the same time, and one on the paper inner surface of the intermediate drive shafts 1 1 and 12 A total of 5 shaft portions are provided for the roll support shafts 18 and 19 to be described later. These shaft components are inclined 4 5 β and are parallel to each other. Hereinafter, the power shaft 3 side is referred to as the base end side, and the roll is processed. The 8 and 8 sides are referred to as the tip side, and these shaft components will be described in detail. First, a driven helical gear 13 is provided on the drive transmission shaft 10 and a base end portion in the helical gear box 6. The driven helical gear 1 3 It meshes with a driving helical gear 3 a provided as a drive input member on the power shaft 3, and also drives the drive shaft 10 in the roll cover 7 The front end portion is provided with a first spur gear 14. The first spur gear 14 is meshed with a second spur gear 15 on the base end side of the first intermediate transmission shaft 11 and the first intermediate transmission shaft 11 and the first Two intermediate transmission shafts 12 are provided on the front end side with the same number of teeth and mutually meshing first _ second auxiliary gears 16 and 17 The driving force is first transmitted to the driving transmission shaft 10 through the driving helical gear 3 a 'and the driven helical gear 13, and then transmitted from the driving transmission shaft 10 to the first intermediate through the first spur gear 14 and the second spur gear 15. Transmission shaft 11. Then, the rotation of the first intermediate transmission shaft 11 causes the second intermediate transmission shaft 12 to rotate at the same speed as the first intermediate transmission shaft 11 but in the opposite direction through the first and second auxiliary gears 16 and 17. In addition, a pair of roll support shafts 18 and 18 are provided on the paper inner side of the first and second intermediate Fu moving shafts 11 and 12 in parallel with the Fu moving shafts 1 1 and 12 respectively, as shown in FIG. 2. For convenience, -13- is shown horizontally in the figure (please read the precautions on the back before filling this page) Applicable B® home sample! ICNNS) A4 size (210X297 mm) 446589 A7 £ 7_ ____ V. Description of the invention (11) These roller support shafts are in the direction of the shaft center of the shafts 1, 8 and 8. The driven gears have the same number of teeth 1 9 and 19 are respectively provided at the axial intermediate positions of the roll support shafts 18 and 18. These driven gears 19 and 19 are respectively the first and second intermediate drive shafts 1 and 12 respectively. The two secondary gears 16 and 17 are combined, as shown in FIG. 3. In this way, the rotation of the first and second intermediate shafts 11 and 12 can be respectively advanced to the respective roll support shafts 18 and 18. As shown in FIG. 2, on the tip end portions of the support shaft rolls 18, 18 protruding from the upper end surface 7a of the roll cover 7, the processing rolls 8, respectively fixed with roll fastening caps 20, 20, are externally fitted. 8. The outer periphery of each of the processing rolls 8 and 8 is composed of a plurality of (as shown in FIG. 2) grooves C 1 and C 2 at a certain distance along the axial direction. In the figure, the first hole C1 at the base end is at the position of the above-mentioned conveying line P. The stamp of the Central Consumers Association of the Ministry of Economic Affairs of the Central Bureau of Soap and Consumer Cooperatives is shown in the figure | Each of the roller support shafts 18, 18 is embedded with an eccentric sleeve 2 1 and 2 1 and passes through the eccentric sleeve 2 1 and 2 1 is supported in the roll cover 7. In addition, a gap adjustment mechanism (not shown in the figure) is provided on the inner surface of the paper of these eccentric sleeves 2 1 and 21. • The protruding rotation 2 2 rotated outside the cover of the roller 7 can be configured by the gap adjustment mechanism. The eccentric sleeves 21 and 21 are rotated and displaced. With the rotation displacement, each driven auxiliary gear 19, 19 of each roll support shaft 18, 18 and the first and second auxiliary v of the first and second intermediate transmission shafts 11, 12 can be held. When the gears 16 and 17 mesh, the distance between the two axes is changed, so that the distance between the processing rolls 8 and 8 can be adjusted. Among the above shaft components | As shown in Figure 1, the drive transmission shaft 10 provided between the helical gear 6 and the roll cover 7 is divided into two parts: in the helical gear -14- (Please read the precautions on the back before (Fill in this page) The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297) 446589 A7 ____B7______ 5. Description of the invention (12) The drive shaft part 1 0 a on the box side and the follower on the roll cover 7 side Moving shaft part 1 0 b. A splined shaft joint (axial direction telescopic mechanism) 25 composed of a spline is provided at the separation point. That is, a driven spline member 10b is provided with a male spline 2 on the lower end side protruding obliquely downward from the roll cover 7. 5 a, at the same time, the driving shaft member 1 0 a is provided with a female spline 2 5 b on the upper end side protruding obliquely upward from the helical gear box 6 * Therefore, the driving shaft member 1 0 a and the driven shaft The shaft members 10b are coupled so as to be able to move relatively in the axial direction while maintaining the radial overlap. In addition, the roll cover 7 may slip along the inclined support surface of the center abutment 5a. In addition, in order to cause the roll cover 7 to slide, a cover moving brake (moving mechanism) 26 composed of a hydraulic cylinder is designed along the inclined support surface of the center abutment 5a. In the strip rolling mill composed of the above-mentioned components, the rolling mill driving motor 1 is driven, and the rotational driving force is distributed to each roll stand 4 through the power shafts 3, 3, and then the Fu moving shaft 10, the first, and the second are driven in turn. The intermediate driving shaft transmits the rotational driving force to the roll support shafts 18, 18 »and then uses the processing rolls 8, 8 provided at the ends of these roll support shafts 18, 18 to send the rolling stock from the conveyor line, For example, the wire is rolled. The operation of exchanging wear or grooves of different sizes during rolling will be described below. For example, at this time, the first hole C1 is located on the conveying line P, and the cover moving brake 26 is activated to move the roll cover 7 obliquely downward toward the side of the helical gear box 6 by a distance corresponding to the distance between the first hole and the second hole. In this way, instead of the first hole slot C1, the second hole slots c 2, C 2 of the two processing rolls 8 and 8 are simultaneously switched to the position on the conveying line P. -15- (Please read the precautions on the back before filling (I) This paper size is applicable to Chinese national standards < CNS) A4 specification (210X297 male) 446589 A7 ___B7 V. Description of the invention (13) When the roll cover 7 is moved to the helical gear box 6 side • The axis of the driven shaft portion 1 0 b on the drive shaft 10 is driven The position has changed with respect to the position of the driving shaft portion 10a. However, since a shaft joint 25 is provided between the two which can expand and contract axially while maintaining a radial overlap, the power from the above is still maintained. A driving force transmission line from the shaft 3 to the processing rolls 8 and 8. In this way, simply by moving the roll cover 7, the replacement of the holes and grooves can be completed, and then the rolling after the replacement of the holes and grooves can be started immediately. As explained above, in this embodiment, the roll cover 7 and the helical gear box 6 are provided separately, and the hole and groove exchange on the processing rolls 8 '8 can be completed by only moving the roll cover 7. The hole and groove exchange operation is simple, And it can be completed in a short time. The Ministry of Justice of the People's Republic of China has printed the existing technology with the quasi-bureau's work co-operative consumer cooperative. As mentioned earlier, when performing the hole and groove exchange, the processing roll must be removed from the roll support shaft, or the roll must be axially reversed. Or change the position where the gasket is inserted and fix it again. Such an operation * For example, 10 racks require at least 6 people X 30 minutes of manpower and time. In addition, in an automation-oriented and reduced labor plant, during normal rolling, the working area of a rolling unit requires only 1-2 people. In order to shorten the time, in order to shorten the time, people in other work areas are usually required to assist. This increases the burden on workers outside the work area. In addition, the processing roll is fixed by internal pressure or side pressure. * When angstrom or grease adheres to the fixed surface, it will slide, resulting in damage. In this way, the existing processing roll fixing operation requires skill and care, and the hole and groove exchange operation is performed in a harsh environment where rolling scale, cooling water and grease are present. -16- (Please read the precautions on the back before filling in this page) This paper size is applicable to China's household furniture ratio (CNS) A4 specification (2 丨 0X297 mm > 446589 A7 _____B7_ V. Description of the invention (彳 4) However, in this embodiment, the above-mentioned hole and groove exchange operation is not required. It is beneficial to reduce the number of workers and also reduces downtime. Therefore, productivity can be improved and operation costs can be reduced. Also, no loading and unloading is required during hole and groove exchange. The rolls 8 and 8 are processed to reduce roll breakage accidents. In addition, in the present embodiment, since the drive shaft 10 is provided with a shaft joint 25 that is free to extend and contract in the axial direction, the roll is moved even in order to exchange holes and grooves. The positions of the hood 7 and the driven helical gears 13 are not changed. This enables stable and high-speed operation. That is, in the above-mentioned rolling unit, a plurality of roll stands 4... The power shafts 3, 3 of these frames 4 distribute the driving force to each of the roll frames 4 .... When the slot is to be exchanged, each of the roll frames 4 ... must be moved separately, so if there is a position of the driven helical gear 13 Changed The linear power shaft cannot maintain the meshing state of each of the driving helical gear and the driven helical gear. Therefore, it is necessary to add a shaft joint such as a universal joint that compensates the deviation of the shaft center between each frame on the power shaft. Under the condition of high-speed rotation | Universal joints are not only expensive, non-economical design, but also difficult to achieve technically. They are the cause of vibration and noise.汔 Read the note on the back again and then again on this page) In this embodiment, because the shaft joint 25 is provided on the drive transmission shaft 10, the position of the driven helical gear 13 will not change, and The relationship between the power shafts 3 and 3 can be the same as the original *, so high-speed work with high productivity can be stably performed. [Embodiment 2] Next, another embodiment of the present invention will be described with reference to FIGS. 5 to 8. The dimensions are applicable to China® Home Standard (CNS) A4 specifications (2 丨 0X297 mm > -17-A7 B7 V. Description of the invention (15). Here, components having the same functions as those shown in the above embodiment 1 are used. Same sign Therefore, the description thereof will be omitted. As shown in FIG. 5, the strip rolling mill in this embodiment is provided with a plurality of roll stands 4 inclined at an angle of 45 °, and is arranged to cross the conveying line P perpendicular to the paper surface. Example 1 constitutes the same unit. As shown in the figure, each roll stand 4 is on a base 5 composed of support surfaces inclined at 45 ° on the left and right sides. As described above, it consists of a helical gear box 6 and a roll cover. 7. As shown in Figure 6, there is a driven helical gear 1 at the base end 3. The drive transmission shaft 10 with a first spur gear 1 4 at the front end is short. The entire length is supported by the helical gear box 6. In addition, in this figure and subsequent figures, the axis direction of each shaft member is shown horizontally for convenience. The first intermediate transmission shaft 11 has a structure in which a base end portion thereof projects from the wall surface of the roll cover 7 and protrudes toward the helical gear box 6 side. A second spur gear 1 5 is provided at the protruding end as easily as a fuel nozzle. The second spur gear 1 5 is meshed with the first spur gear 1 4 which drives the drive shaft 10 in the helical gear box 6. Structure》 Sealed by the Central Ministry of Standardization of the Ministry of Industry and Commerce of the People's Republic of China. In addition, the processing rolls 8 * 8 provided on the tip side of the roll cover 7 are the same as those in the first embodiment. , C 2 composition. In the figure, the first hole C1 on the base end side is in a state of being located on the conveying line P. At this time, the axially opposite end surfaces of the helical gear box 6 and the roll cover 7 are kept at an axial distance from the first hole groove C 1 and the second hole groove C 2. < 5 same distance. The roll cover 7 is fixed to the base 5 by a vise device 31 described later. In addition, in this state, the apex side of the second spur gear 15 is at -18- This paper size is applicable to the Chinese national kneading (CNS) A4 «L grid (210X297 mm) ^ 4 46 5 8 9 A7 £ 7_ V. Description of the invention (16) A structure that is slightly axially offset from the front end side of the first spur gear 14 and meshes with the first spur gear 14. Because this shift occurs, the tooth widths of the first and second spur gears 14 and 15 must be set to ensure that the rotational driving force sent from the power shaft 3 can be transmitted. ... Are arranged in parallel along the conveying line P. As in the above-mentioned embodiment, the rolled products such as wire are rolled by the processing rolls 8 and 8 of the roll stands 4... When the slot is to be exchanged on the conveying line P, for example, when the position of the first slot is replaced by the second slot described above, the roll cover 7 is moved in the same manner as described above. In this embodiment, the moving cover brake 26 uses an electric motor 26a, and the base 5 is provided with a screw rod 2 6 b along the moving direction, and the nut 2 6 c of the screw rod 2 6 b is screwed together. In the recessed portion of the lower end of the flange 7 b of the fixed roll cover 7. The roller cover 7 can be moved by rotating the screw rod 26 b with the electric motor 2 6 a. In addition, as shown in FIG. 5, a plurality of vise devices 3 1 composed of hydraulic cylinders are provided on the lower side of the roll cover 7 to fix the roll cover 7 to the base 5 before and after the moving operation. …. As shown in Figure 7 but printed by the Central Military Commission ’s Ordnance and Consumer Cooperatives *, the electric motor 2 6 a is used to move the roll cover 7 from the position shown in FIG. 6 to the end face of the roll cover 7 and basically touch it. Position of the helical gear box 6. That is, the roll exchange is performed by this operation so that the second hole groove C 2 is positioned on the conveying line. At this time, since the second spur gear 15 of the first intermediate transmission shaft 11 is pushed into the helical gear box 6 from the front position, it is exactly the opposite of the situation in FIG. 6. The ground is slightly shifted, and it keeps meshing with the first spur gear 14. This paper size is applicable to China National Sample Rate (CNS) A4 specification (2 丨 0X297 mm) -19 · 446589 A7 ___B7 V. Description of the invention (17) As described above, the meshing state of the axial offset is transmitted as described above, so that the rotational force from the power shaft 3 is transmitted to the processing rolls 8 * 8 through the first and second spur gears 14 and 15. In this embodiment, the length of the screw rod 26 b, that is, the stroke moved by the cover moving brake is set so that the above-mentioned vehicle L roller cover 7 can be moved to the second spur gear 15 completely from the helical gear box 6 Pull out the position, as shown in Figure 8. Based on the above description • In this embodiment, it is the same as in the above embodiment 1 * The roll change is performed by the operation of moving the roll cover 7. At this time, the first spur gear 14 and the first intermediate drive shaft 1 1 of the drive shaft 10 are driven. The outer periphery of the second spur gear 15 is composed of parallel axial tooth shapes, so that even if an axial offset occurs during the roll change, the state of mutual meshing can be maintained. Therefore, an axial telescopic mechanism is formed. In this way, it is not necessary to provide a spline shaft 25 and other isometric shaft joints as in the first embodiment, and the overall structure is more concise. Enlarges the device as a whole. In this embodiment, since such a space is not needed, the device is relatively compact as a whole, which facilitates the installation of the device in a small space. In addition, sliding bearings and the like are installed between the above-mentioned roll support shafts 18, 18 and the eccentric sleeve 2 1. This type of bearing is a consumable item. In order to exchange bearings each time, the roll cover 7 is moved to a maintenance work area for bearing exchange. At this time, since the gears 1 4 are on the side of the helical gear box 6 in this embodiment, as compared with the cover with the shaft joint, the roll cover 7 can be small and easy to assemble and disassemble. When there is a shaft connector, the core must be taken out during loading and unloading, and a shaft is required. Connector • 20- Read the back :; i Note the matter and fill in the manual 本) This paper size applies the Chinese national standard (CNS > A4 specifications (210X297 mm) 44β589 Α7 Β7 V. The supporting device of the invention description (18), so that the shaft joint itself has a complicated structure, and the loading and unloading operations are difficult. Loading and unloading operation of the roll cover 7. Further | Generally, when the number of rotations is as high as 2500 revolutions per minute, in a high-speed rotation area such as a drive transmission shaft 14, the structure of this embodiment is not as compared with a shaft joint. Problems such as vibrations can occur, and a more stable working state can be maintained. In this embodiment, a first intermediate transmission shaft 11 is used, which protrudes from the roll cover 7 to the helical gear box 6 side, and a second spur gear is provided on the end surface of the helical gear box 6 1 5 It is a structure that can be freely fixed like an oil nozzle. In this way, it is easy to remove the roll cover 7 from the helical gear box 6 side and replace the second spur gear 1.5 with another gear with a different number of teeth. Printed by Shelley Consumer Cooperatives (Xu 1¾ read the notes on the back and fill in this page). That is, in the unit, multiple roll stands 4 ... are linearly arranged in increasing order according to the number of rotations of each roll 8. The change is adjusted by changing the number of gear teeth that mesh with each other. In order to exchange the above-mentioned bearings, such as the outer roll cover 7, after the replacement of the roll cover, the work can be started immediately | There are too many roll covers. Here, as described above. • Since the second spur gear 15 that determines the number of rotations of the processing rolls 8 can be easily attached and detached, the preliminary cover can be shared, and the overall structure is simple. The hood moving brake 26 can move the rolled light hood 7 along the inclined support surface of the base table 5 until the above-mentioned second spur gear 15 is completely pulled out of the helical gear box 6. In this way, it is easy to make the elephant car L Roller support shafts 8 and 8 bearing repair operations. This paper size applies to China's national kneading rate (CNS) A4 specifications (210X297 mm). 21-446589 A7 _B7__ V. Description of the invention (19) It is said that when carrying out this kind of maintenance work, first carry out the work of carrying the roll cover 7 by a crane. At this time, the hoisting work of the roll cover 7 by a crane must be performed at a position that does not interfere with the helical gear box 6 ". The roll cover 7 must be removed from the side of the helical gear box 6 • Moved diagonally above to the above position. Here, you can use the cover moving brakes 2 6 to complete this work. In this way, even if it is to be carried by a crane, no other special movement is required The equipment and operations make the overall structure simple and easy to operate. The present invention is not limited to the above embodiments, and can be variously modified within the scope of the present invention. For example, although the drive transmission A splined shaft joint is mounted on the shaft 10. However, as shown in FIG. 9, the first intermediate transmission shaft 11 can be divided into two parts. The driving shaft portion 1 1 a with the first spur gear 1 4 is provided in the helical gear box 6, and the end face of 1 1 a A female spline shaft 2 5 b is provided, and a driven shaft portion 11 b supported by the roll cover 7 at the same time is provided with a male spline shaft 2 5 a at an end portion protruding from the roll cover 7 to the helical gear box 6 side. In this structure, the number of gears in the roll cover 7 is smaller, and the roll cover 7 can be made smaller *. Therefore, the roll cover 7 can be attached and detached when the bearing is changed, and the transportation operation becomes easier. Printed by the Central Government Bureau of Work, Consumer Affairs Cooperative Co., Ltd. For example, in each of the above-mentioned embodiments, the movable parts that are moved when changing the hole slot are listed. Structures moving on platforms 5, 5a. However, for example, the above-mentioned eccentric sleeves 2 1, 21, which are externally embedded on the roll support shafts 18, 18, may move axially in the roll cover 7. Therefore, it can also be used to complete the roll changing operation. In this structure, compared with the structure of the moving roll cover 7, the moving pair • 22- (诮 1, read the following precautions, and then Jn {: T this page) This paper size applies the Chinese National Standard (CNS) A4 Specification (2 丨 OX297mm) 446589 A7 ._B7 ____ 5. Description of the invention (20) The device becomes light and small, which makes the device for automatic movement easier. The overall manufacturing cost can be reduced. In addition, because the roller support shaft 1 8, 18 may also move axially within the eccentric sleeves 2 1, 2 1, which can also complete the roll change. In this structure, the moving object becomes lighter and smaller, and the overall structure is simpler. When using eccentric bushings 2 1, 2 1 or roll support shafts 18, 18 as moving parts • As shown in Fig. 10 (a) '(b)' provided on the roll support shafts 18, 18 Between the driven sub-gear 19 and the first and second sub-gears 16 and 17 on the first and second intermediate transmission shafts 11 and 12 are the same as those in the above-mentioned embodiment 2. Generates axial offset and maintains the meshing state | It forms an axial telescopic mechanism, so there is no need to additionally provide an axial direction in this structure The components with telescopic functions have a simpler overall structure. "When the movable part that moves during roll change is roll cover 7, eccentric sleeve 2 1 or 21, or roll support shaft 1 8 or 18, if a position to detect the amount of movement is set Detectors can further improve the operability and workability of the roll change. Quot; Printed by the Ministry of Labor, Central Bureau of Standards and Labor, Consumer Cooperatives ^ (please read the precautions for 5 and read the back 1) In the case of a detector, after the operation of moving the movable member for the roll change is started, the time when the movable member reaches the predetermined position to stop the operation can be obtained from the signal detected by the position detector. This eliminates the need for the conveyor line P The progress of the operation is determined by visually inspecting the axial displacement of the processing roll 18, so the operation can be performed from a long distance, making the roll changing operation easy *, and the roll changing time can be shortened. In the above-mentioned embodiments, various types are listed. The paper size of the unit's final paper is applicable to China's national standard (CNS > A4 size (2 丨 0X297 mm). 23-4465 89 A7 B7 S Printed by the Central Standards Bureau Offshore Consumer Cooperatives Explanation (21) Structure 0 However, the present invention is also applicable to other forms of steel strip rolling mills whose single end is fixed to a roll support shaft. [Inventive effect] As explained above ♦ In the first claim of the present invention The steel bar tilS is equipped with movable parts that allow the processing rolls to move axially. * There is a structure where the processing rolls can move integrally with these movable parts. Therefore, do not add or remove X rolls when changing rolls, which makes the operation simple and shortens the time required Productivity: In the steel bar rolling mill according to item 2 of the patent scope, the axial expansion and contraction is provided in the driving force transmission line that transmits the rotational driving force from the driving force input member provided on the side of the frame to the processing roll. Mechanism so that the position of the driving force input part can be In the case of moving the movable part to change the roll, for example, as described in item 3 of the patent application, the roll cover which supports the roll support shaft separately from the fixed cover of the driving force input member of the hood can be used as the movable part and fixed from the fixed position. The cover extends to the middle of the shaft member of the roll cover. A spline shaft is provided as an axial telescopic mechanism. Even if the driving force is distributed from the power shaft to each frame like the structure of the above unit, the power shaft may have a linear structure. Therefore, high-productivity and high-speed operation can be performed stably. In the steel bar rolling mill under the scope of patent claim No. 4, the quotient {aai m on the shaft part is used to form the axial telescopic mechanism with axial displacement while maintaining the meshing state. Therefore, there is no need to provide a special shaft joint like the spline shaft mentioned above. More concise 〇 This paper standard is applicable ® National Standard (CNS) A4 specification (210X297 mm) _ 24-446589 A7 B7 V. Description of the invention (22) In the strip rolling mill under the scope of application for patent No. 5 The gear on the hood side can be freely attached and detached from the end face of the shaft member protruding toward the fixed cover. Therefore, even if the unit is assembled *, the above-mentioned gears can be exchanged. • It can easily meet the requirements of the number of rotations between the various frames. The overall structure becomes simple. In the strip rolling mill under the scope of patent application No. 6, since the moving roll cover mechanism provided for the roll change has a moving stroke for moving the roll cover to a hoistable position, the roll cover must be transported to maintenance like a bearing change When a crane is used in the work area, no additional moving mechanism and work are needed, which makes the operation easy. In the strip rolling mill under the scope of patent application No. 7, the movable parts are composed of eccentric sleeves which are respectively embedded on a pair of roll support shafts, so the moving object during the roll change is small, so that the device for automatic movement is changed. It ’s simple, and the overall production cost can be reduced. ”In the steel bar rolling mill under the eighth patent application, the movable part is composed of the roll support shaft. • The moving object becomes lighter and smaller when the roll is changed, and the overall structure is simpler as above. , The overall production cost is lower. Printed on the steel bar rolling mill under the 9th patent application by the Central Laboratories of the Ministry of Economic Affairs of the Ministry of Economic Affairs, because a position detector is installed to detect the amount of moving parts. This eliminates the need for visual processing on the conveyor line. The axial displacement of the rolls determines the progress of the operation. It can have a structure such as long-distance operation, which makes the roll change operation easier, and the roll change time can be shortened.》 This paper size applies Chinese National Standards (CNS) A4 size (210X297 mm) .25-

Claims (1)

  1. 4-4 6 5 8 9 VI. Patent Application Scope No. 8 7 1 0 0 2 5 8 Chinese Patent Application Scope Amendment · ν · '·!-, Read Note 1 of ^-^ '--- Item ^ This page was revised in June 1988 1. A strip rolling mill in which a single-end support state is provided parallel to each other on a conveyor line side of a stand provided toward a conveyor line for conveying rolled products There is a pair of processing rolls, each of which has a plurality of holes and grooves on the outer peripheral surface, and is characterized in that a movable member that moves according to the interval between adjacent holes and grooves is provided in the axial direction of the pair of processing rolls, and The pair of processing rolls are supported to move integrally with the movable member. Nickel General Manager of the Ministry of Economic Affairs / 4 ^ 7¾ H.-A · # 合 itil 印 2 2. The strip rolling mill described in item 1 of the scope of patent application, wherein the drive force input component provided on the side of the stand On the other side, each shaft member such as a drive transmission shaft, an intermediate transmission shaft, and a pair of roll support shafts is provided in parallel with each other. Each of the roller supports receives the rotational driving force input from the driving force input member through the drive transmission shaft and the intermediate transmission shaft. A processing roll is provided coaxially on the tip end side of the shaft, and in the driving force transmission path via the shaft member, an axial expansion and contraction is provided in which the axially retractable state is maintained in order to transmit the rotational driving force while maintaining the radial overlap. mechanism. 3. The strip rolling mill according to item 2 of the scope of patent application, wherein the movable member and the fixed cover of the driving force input member of the enclosure are separately provided, and are composed of a roller cover supporting the support rollers inside, and The axial telescopic machine 惝 is composed of a spline provided in the middle of a shaft member extending from a fixed cover to a roll cover. The standard of this paper is China National Standard (ΓΝ5; > Λ4 Dange (21U. · / Public) ¢-446589 6. Application for special 1 丨 scope 4 as described in the patent application Fan Yuan No. 2 steel rolling mill, The movable member and the fixed cover of the driving force input member of the enclosure are separately provided, and are composed of a roller cover that supports the roller support shaft internally, and as the axial telescopic mechanism, the tooth width direction deviates as the roller cover moves. Gears moved and in an intermeshing state to transmit driving force are provided on the shaft member supported by the fixed cover and the shaft member supported by the roll cover. 5. The steel strip rolling mill according to item 2 of the scope of patent application, wherein the roll cover The side gear is provided so that it can be freely attached and detached to the end face of the shaft member protruding from the roll cover to the fixed cover side. 6 • The steel rolling mill according to item 2 of the patent application scope, wherein the roll cover is provided along A mechanism for axial movement, which has a movement stroke that cancels the radial overlap state on the axial telescopic mechanism as the roll cover moves and moves the roll cover to a position that can be lifted. " Property Goa: 工-^ # 合 社 印 " 7. The strip rolling mill described in item 2 of the scope of patent application, wherein the movable parts are respectively embedded outside a pair of roll support shafts and on the rolls. The eccentric sleeves supporting the roll support shafts in the cover are composed of eccentric sleeves. As an axial telescopic mechanism, the gear width direction is shifted along with the axial movement of the eccentric sleeves and the gears are engaged with each other to transmit the driving force. The support shaft and the intermediate drive shaft. 8 · The strip rolling mill according to item 2 of the patent application range, wherein the movable part is composed of a roll support shaft, and, as an axial telescopic mechanism, the roll supports the shaft of the shaft Gears that are shifted in the direction of the moving tooth width and are in phase I 丨 intermeshing state to transmit driving force are provided on the roller support uranium and the intermediate drive shaft u L __-_-__ ) Λ4 (21 (W i ·-¢-4 46589 5 «cs i > S) 6. Application for patent scope 9. The steel strip rolling mill according to any one of the scope of patent applications No. 1 to 8, in which Detecting movement of the movable member A position detector is set up. The Ministry of Economic Affairs, the Ministry of Economic Affairs, the Ministry of Economic Affairs, the Ministry of Economic Affairs, the Ministry of Economic Affairs, the Ministry of Economic Affairs, the Ministry of Economic Affairs, and the Ministry of Economic Affairs, ^. , Male) -3-
TW87100258A 1997-01-10 1998-01-09 Long product rolling mill TW446589B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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USD815886S1 (en) * 2017-05-03 2018-04-24 Ningbo Borine Electric Appliance Co., Ltd. Blender
USD815887S1 (en) * 2017-05-03 2018-04-24 Ningbo Borine Electric Appliance Co., Ltd. Blender

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Publication number Priority date Publication date Assignee Title
ITMI20041526A1 (en) * 2004-07-28 2004-10-28 Vai Pomini Srl "Monobloc finisher with optimized transmission ratio for a billet rolling plant"
DE102009050710B4 (en) * 2009-10-26 2016-08-04 Sms Group Gmbh Wire rolling stand with single drive
DE102009060237A1 (en) * 2009-12-23 2011-06-30 SMS Siemag AG, 40237 Rolling mill with a drive unit
ITVI20120122A1 (en) * 2012-05-23 2013-11-24 Invimec Srl mill finalized

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD815886S1 (en) * 2017-05-03 2018-04-24 Ningbo Borine Electric Appliance Co., Ltd. Blender
USD815887S1 (en) * 2017-05-03 2018-04-24 Ningbo Borine Electric Appliance Co., Ltd. Blender

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KR19980070305A (en) 1998-10-26
KR100243483B1 (en) 2000-03-02
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JP3535946B2 (en) 2004-06-07

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