CN204892558U - Accurate four roller sets of section bar close pass rolling mill adjusting device - Google Patents
Accurate four roller sets of section bar close pass rolling mill adjusting device Download PDFInfo
- Publication number
- CN204892558U CN204892558U CN201520632966.7U CN201520632966U CN204892558U CN 204892558 U CN204892558 U CN 204892558U CN 201520632966 U CN201520632966 U CN 201520632966U CN 204892558 U CN204892558 U CN 204892558U
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- main frame
- benchboard
- rolling mill
- roll
- guiding mechanism
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Abstract
The utility model discloses an accurate four roller sets of section bar close pass rolling mill adjusting device, roll system and including the four -high mill, the rolling mill fixed plate is fixed with four the same main frame crossbeams on the rolling mill fixed plate, on the every main frame crossbeam all the installation have one set of the same roll position adjustment mechanism, four main frame crossbeams form one closed square, the utility model discloses a four roller sets close the radial of pass rolling mill roll and axial adjustment, and the adjustment procedure is quick, convenient, accurate, the roll is in unsettled state, can change the roll easily when the roll weares and teares, compact structure, relevant part size is little, saves manufacturing cost, has improved production efficiency and rolling mill stability that four roller sets closed the pass rolling mill, enlarges application scope, can make the section bar in the rolling different cross -sections of four roller pass rolling mills, can install on four multiple roller sets close the pass rolling mill, simple structure, convenient operation, the transmission is accurate, strong adaptability, stability height to have self -locking function, the using value is high.
Description
Technical field
The utility model belongs to mechanical field, particularly one accurate section bar four roller combined pass adjustment of rolling mill device.
Background technology
In recent years, domestic is that the demand of non-circular profile shapes is growing to its section configuration, especially light section profile shapes (cross-sectional area).This kind of section bar has a wide range of applications, except the toy part seen except daily, frame, as coil-block of transformer coil, automobile piston rings, mechanical realization parts etc. also can use profile shapes.The roll of traditional profile shapes four roll pass milling train is all fixing, and can not adjust pass, cause the bad adaptability of milling train, range of application is narrow, and production efficiency is low.In order to solve the manufacturing issue of precision special-shaped material, domestic relevant scholar has done many research.
The patent No. is the utility model patent " a kind of four-roll universal rolling machine " of CN202169277U, can realize four axles and be adjusted by the radial direction of roll during angular gear centralized drive, can realize the axis adjustment of roll simultaneously.But need to install special balanced controls, manufacturing cost is excessive, and load change easily causes vibration, milling train is run unstable.
The patent No. is the utility model patent " intersection beam type four roll shape mill roll radiai adjustment mechanism " of CN102764769A, devising with housing screw is the governor motion of major part, the radiai adjustment of four roll pass rolling mill roll can be realized, reach the trickle adjustment of vestibule, the on-line tuning after realizing roll wear or after roll dislocation.But this mechanism only can realize the radial fine adjustments of roll, the less stable of housing screw, and does not have self-locking mechanism, during milling train work, roll is easy to produce deviation.
Above technology all respectively has its own defect, not can solve the problem of current four roll pass milling train.For overcoming the shortcoming of prior art, improving production efficiency and the milling train stability of four roller combined pass milling trains, expanding the scope of application, Structure of need is more simple, and mechanism is more stable, adjustment roll location guiding mechanism more accurately.In order to reach this object, the utility model needs to realize following characteristic:
The first, roll location is realized at radial and axial accurate adjustment.
The second, mechanical stability is higher, has auto-lock function.
Three, the scope of application is wider, can make the section bar of four roll pass mill milling different cross section.
Utility model content
Utility model object: the utility model provides a kind of accurate section bar four roller combined pass adjustment of rolling mill device, to solve milling train poor stability in prior art, and does not have self-locking mechanism, during milling train work, roll easily produces the problem of deviation.
Technical scheme: to achieve these goals, the utility model by the following technical solutions:
A kind of accurate section bar four roller combined pass adjustment of rolling mill device, comprise four-high mill, roll system and milling train fixed head, described milling train fixed head is fixed with four identical main frame crossbeams, every root main frame crossbeam is all provided with a set of identical roll location guiding mechanism, four main frame crossbeams formed one closed square, described four main frame crossbeams and roll location guiding mechanism are followed successively by described first main frame crossbeam and are provided with the first roll location guiding mechanism, second main frame crossbeam is provided with the second roll location guiding mechanism, 3rd main frame crossbeam is provided with on the 3rd roll location guiding mechanism and the 4th main frame crossbeam and the 4th roll location guiding mechanism is installed, the described roll location guiding mechanism that often overlaps comprises radial guiding mechanism and mechanism for axial adjusting,
Described first roll location guiding mechanism, the second roll location guiding mechanism, between the 3rd roll location guiding mechanism and the 4th roll location guiding mechanism, roll system is installed;
Described radial guiding mechanism comprises benchboard, the first line slideway, the second line slideway, the first dovetail groove slide block, the second dovetail groove slide block, unthreaded hole, screw shell, sliding screw, dial, handwheel and dovetail groove;
Thin one end, described benchboard one end is thick, namely has certain angle between benchboard upper surface and benchboard lower surface; First dovetail groove slide block is fixed on any one main frame crossbeam, and the first dovetail groove slide block forms the first line slideway auxiliary by dovetail groove and the first line slideway, and the first dovetail groove slide block can do relative sliding along the first line slideway; First line slideway is fixed on benchboard lower surface, and benchboard lower surface is parallel with the first main frame crossbeam; Second line slideway is fixed on benchboard upper surface, and the second dovetail groove slide block is arranged on the second line slideway by dovetail groove and forms the second line slideway auxiliary; Second dovetail groove slide block is fixed on roller bracket, and roller bracket is connected with roller assembly;
One end that described benchboard is thicker offers unthreaded hole, unthreaded hole internal fixtion has screw shell, is provided with sliding screw in screw shell, and sliding screw stretches out in unthreaded hole, and be installed on another main frame crossbeam pointed by unthreaded hole opening, the external part afterbody of sliding screw is provided with dial and handwheel;
Described mechanism for axial adjusting comprises tooth bar, travelling gear, planetary reduction gear and stepper motor; Described tooth bar is fixed on roller bracket, and stepper motor is connected with planetary reduction gear and is arranged on main frame crossbeam corresponding thereto, and planetary reduction gear output is connected with travelling gear, and driving cog wheel and rack engages.
Further, described first dovetail groove slide block is fixed by screws on the first main frame crossbeam; Described first line slideway is fixed by screws in benchboard lower surface; Second line slideway is also fixed by screws in benchboard upper surface; Described screw shell is fixed by screws in the unthreaded hole of benchboard.
Preferably, the diameter of axle of described screw shell is parallel with benchboard lower surface.
Further, described sliding screw is installed on another main frame crossbeam pointed by unthreaded hole opening by bearing, and sliding screw and main frame crossbeam joining part are smooth.
Further, in the angle of 7.181 ° between described benchboard upper surface and benchboard lower surface, therefore in the angle of 7.181 ° between the second line slideway and the first main frame crossbeam; The diameter of axle of screw shell and benchboard upper surface are the angle of 7.181 °.
Further, described radial guiding mechanism and mechanism for axial adjusting are provided with auto-lock function.
Preferably, described four cover roll location guiding mechanisms are centrosymmetric arrangement on four-high mill.
Further, described benchboard upper surface and benchboard lower surface are provided with some screwed holes.
Further, described roller assembly is also provided with shaft coupling.
Further, described roller assembly is connected with back-moving spring by back-moving spring hook, and the other end of back-moving spring is connected with milling train fixed head.
Beneficial effect: the radial direction that the utility model can realize four roller combined pass rolling mill rolls adjusts with axial, and adjustment process is fast, conveniently, accurately; The mode of the utility model Roller. redress both can manually also can be electronic, as needed electronic only need that handwheel is changed to motor and decelerator, sliding screw being changed into rolling screw and just can realize electronic adjustment; Roll is in vacant state, can change roll easily when roll wear; Compact overall structure, related components size is less, saves manufacturing cost; The utility model improves production efficiency and the milling train stability of four roller combined pass milling trains, expand the scope of application, can make the section bar of four roll pass mill milling different cross section, the utility model can be arranged on multiple four roller combined pass milling trains, structure is simple, design ingenious, easy to operate, transmission is accurate, strong adaptability, stability is high, and has auto-lock function, and using value is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the radial guiding mechanism structural representation of the utility model;
Fig. 3 is the utility model mechanism for axial adjusting structural representation;
Fig. 4 is the utility model line slideway auxiliary structural representation;
Fig. 5 is the utility model benchboard structural representation;
Fig. 6 is the utility model dovetail groove slide block structure schematic diagram;
Wherein: 1-milling train fixed head, 2-first main frame crossbeam, 3-first roll location guiding mechanism, 4-roll system, 5-second roll location guiding mechanism, 6-second main frame crossbeam, 7-the 3rd main frame crossbeam, 8-the 3rd roll location guiding mechanism, 9-the 4th main frame crossbeam, 10-the 4th roll location guiding mechanism, 11-first dovetail groove slide block, 12-first line slideway, 13-benchboard, 14-second line slideway, 15-second dovetail groove slide block, 16-roller bracket, 17-shaft coupling, 18-roller assembly, 19-back-moving spring hook, 20-back-moving spring, 21-unthreaded hole, 22-threaded sleeve, 23-sliding screw, 24-dial, 25-handwheel, 26-stepper motor, 27-planetary reduction gear, 28-travelling gear, 29-tooth bar, 30-first line slideway auxiliary, 31-second line slideway auxiliary, 32-benchboard lower surface, 33-benchboard upper surface, 34-screwed hole, 35-dovetail groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of accurate section bar four roller combined pass adjustment of rolling mill device, comprise four-high mill, roll system 4 and milling train fixed head 1, described milling train fixed head 1 is fixed with four identical main frame crossbeams, every root main frame crossbeam is all provided with a set of identical roll location guiding mechanism, four main frame crossbeams formed one closed square, described four main frame crossbeams and roll location guiding mechanism are followed successively by described first main frame crossbeam 2 and are provided with the first roll location guiding mechanism 3, second main frame crossbeam 6 is provided with the second roll location guiding mechanism 5, 3rd main frame crossbeam 7 is provided with on the 3rd roll location guiding mechanism 8 and the 4th main frame crossbeam 9 and the 4th roll location guiding mechanism 10 is installed, the described roll location guiding mechanism that often overlaps comprises radial guiding mechanism and mechanism for axial adjusting,
Described first roll location guiding mechanism 3, second roll location guiding mechanism 5, between the 3rd roll location guiding mechanism 8 and the 4th roll location guiding mechanism 10, roll system 4 is installed;
As shown in Fig. 2,4 and 6, described radial guiding mechanism comprises benchboard 13, first line slideway 12, second line slideway 14, first dovetail groove slide block 11, second dovetail groove slide block 15, unthreaded hole 21, screw shell 22, sliding screw 23, dial 24, handwheel 25 and dovetail groove 35;
Thin one end, described benchboard 13 one end is thick, and the angle namely had between benchboard upper surface 33 and benchboard lower surface 32 is 7.181 °; First dovetail groove slide block 11 is fixed on any one main frame crossbeam, in Roller. redress process, the first dovetail groove slide block 11 maintains static relative to main frame crossbeam, first dovetail groove slide block 11 forms the first line slideway auxiliary 30 by dovetail groove 35 and the first line slideway 12, first dovetail groove slide block 11 makes relative sliding along the first line slideway 12, and the first dovetail groove slide block 11 can do relative sliding along the first line slideway 12; First line slideway 12 is fixed on benchboard lower surface 32, and benchboard lower surface 32 main frame crossbeam is corresponding thereto parallel, and benchboard lower surface 32 is parallel with the first main frame crossbeam 2; Second line slideway 14 is fixed on benchboard upper surface 33, therefore between the second line slideway 14 main frame crossbeam corresponding thereto, also becoming the angle of 7.181 °, the second dovetail groove slide block 15 is arranged on the second line slideway 14 by dovetail groove 35 and forms the second line slideway auxiliary 31; Second dovetail groove slide block 15 is fixed on roller bracket 16, roller bracket 16 is connected with roller assembly 18; Introduce benchboard 13, realize the steady adjustment of roll radial direction, introduce line slideway, adjustment process is more smooth-going, and structure is more stable;
One end that described benchboard 13 is thicker offers unthreaded hole 21, unthreaded hole 21 internal fixtion has screw shell 22, the diameter of axle of screw shell 22 is parallel with benchboard lower surface 32, namely with the angle of 33 one-tenth 7.181 °, benchboard upper surface, sliding screw 23 is installed in screw shell 22, and sliding screw 23 stretches out in unthreaded hole 21, and be installed on another main frame crossbeam pointed by unthreaded hole 21 opening, the external part afterbody of sliding screw 23 is provided with dial 24 and handwheel 25, utilize sliding screw 23 transmission, transmission is accurate, and self-locking is stablized;
The principle of radial adjustment is: when rotating handwheel 25, sliding screw 23 is driven to rotate, along with the rotation of sliding screw 23, the side that benchboard 13 is being parallel to the first main frame crossbeam 2 moves up, now because the first dovetail groove slide block 11 and the second dovetail groove slide block 15 are into the angle of 7.181 °, and angle remains unchanged, first dovetail groove slide block 11 is fixed on again on the first main frame crossbeam 2, relative to frame, keep definitely motionless, so the first dovetail groove slide block 11 and the second dovetail groove slide block 15 are constant in the displacement of left and right directions as shown in Figure 2, and then second dovetail groove slide block 15 will move radially along with the movement of benchboard 13, the amount of its movement is exactly the radial adjustment amount of roller assembly 18.
As shown in Figure 3, described mechanism for axial adjusting comprises tooth bar 29, travelling gear 28, planetary reduction gear 27 and stepper motor 26; Described tooth bar 29 is fixed on roller bracket 16, and stepper motor 26 is connected with planetary reduction gear 27 and is arranged on main frame crossbeam corresponding thereto, and planetary reduction gear 27 output is connected with travelling gear 28, and travelling gear 28 engages with tooth bar 29; Stepper motor 26 drives planetary reduction gear 27 to operate, planetary reduction gear 27 is with nutating gear 28 to rotate, tooth bar 29 rotates along with travelling gear 28 and moves, the roller assembly 18 that roller bracket 16 connects follows tooth bar 29 at axial translation, operate as described above, the position that just can realize roll corresponding to it by other three covers roll location guiding mechanisms adjusts; Utilize stepper motor 26 and planetary reduction gear 27 to carry out axial adjustment, make axially adjustment more precisely, fast.
Described first dovetail groove slide block 11 is fixed by screws on the first main frame crossbeam 2; Described first line slideway 12 is fixed by screws in benchboard lower surface 32; Second line slideway 14 is also fixed by screws in benchboard upper surface 33; Described screw shell 22 is fixed by screws in the unthreaded hole 21 of benchboard 13.
Described sliding screw 23 is installed on another main frame crossbeam pointed by unthreaded hole 21 opening by bearing, and sliding screw 23 and main frame crossbeam joining part are smooth.
In the angle of 7.181 ° between described benchboard upper surface 33 and benchboard lower surface 32, therefore in the angle of 7.181 ° between the second line slideway 14 and the first main frame crossbeam 2; The diameter of axle of described screw shell 22 is parallel with benchboard lower surface 32; The diameter of axle of screw shell 22 and benchboard upper surface 33 are the angle of 7.181 °.
Described radial guiding mechanism and mechanism for axial adjusting are provided with auto-lock function.
Described four cover roll location guiding mechanisms are centrosymmetric arrangement on four-high mill.
As shown in Figure 5, described benchboard upper surface 33 and benchboard lower surface 32 are provided with some screwed holes 34.
Described roller assembly 18 is also provided with shaft coupling 17.Its shaft coupling 17 is everything shaft couplings that power input port of the present utility model external connection power case exports, and ensures that from then on headstock power input.
Described roller assembly 18 is connected with back-moving spring 20 by back-moving spring hook 19, and the other end of back-moving spring 20 is connected with milling train fixed head 1.In order to eliminate driving error as far as possible, mechanism for axial adjusting adds back-moving spring 20, and travelling gear 28 is eliminated as far as possible with the back lash of tooth bar 29.
The mode of the utility model Roller. redress both can manually also can be electronic, as needed electronic only need that handwheel is changed to motor and decelerator, sliding screw being changed into rolling screw and just can realize electronic adjustment.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. an accurate section bar four roller combined pass adjustment of rolling mill device, comprise four-high mill, roll system and milling train fixed head, it is characterized in that: described milling train fixed head (1) is fixed with four identical main frame crossbeams, every root main frame crossbeam is all provided with a set of identical roll location guiding mechanism, four main frame crossbeams formed one closed square, described four main frame crossbeams and roll location guiding mechanism are followed successively by described first main frame crossbeam (2) and are provided with the first roll location guiding mechanism (3), second main frame crossbeam (6) is provided with the second roll location guiding mechanism (5), 3rd main frame crossbeam (7) is provided with on the 3rd roll location guiding mechanism (8) and the 4th main frame crossbeam (9) and the 4th roll location guiding mechanism (10) is installed, the described roll location guiding mechanism that often overlaps comprises radial guiding mechanism and mechanism for axial adjusting,
Described first roll location guiding mechanism (3), the second roll location guiding mechanism (5), between the 3rd roll location guiding mechanism (8) and the 4th roll location guiding mechanism (10), roll system (4) is installed;
Described radial guiding mechanism comprises benchboard (13), the first line slideway (12), the second line slideway (14), the first dovetail groove slide block (11), the second dovetail groove slide block (15), unthreaded hole (21), screw shell (22), sliding screw (23), dial (24), handwheel (25) and dovetail groove (35);
Thin one end, described benchboard (13) one end is thick, namely has certain angle between benchboard upper surface (33) and benchboard lower surface (32); First dovetail groove slide block (11) is fixed on any one main frame crossbeam, first dovetail groove slide block (11) forms the first line slideway auxiliary (30) by dovetail groove (35) and the first line slideway (12), and the first dovetail groove slide block (11) can do relative sliding along the first line slideway (12); First line slideway (12) is fixed on benchboard lower surface (32), and benchboard lower surface (32) are parallel with the first main frame crossbeam (2); Second line slideway (14) is fixed on benchboard upper surface (33), and the second dovetail groove slide block (15) is arranged on upper composition second line slideway auxiliary (31) of the second line slideway (14) by dovetail groove (35); Second dovetail groove slide block (15) is fixed on roller bracket (16), roller bracket (16) is connected with roller assembly (18);
One end that described benchboard (13) is thicker offers unthreaded hole (21), unthreaded hole (21) internal fixtion has screw shell (22), sliding screw (23) is installed in screw shell (22), and sliding screw (23) stretches out in unthreaded hole (21), and being installed on another main frame crossbeam pointed by unthreaded hole (21) opening, the external part afterbody of sliding screw (23) is provided with dial (24) and handwheel (25);
Described mechanism for axial adjusting comprises tooth bar (29), travelling gear (28), planetary reduction gear (27) and stepper motor (26); Described tooth bar (29) is fixed on roller bracket (16), stepper motor (26) is connected with planetary reduction gear (27) and is arranged on main frame crossbeam corresponding thereto, planetary reduction gear (27) output is connected with travelling gear (28), and travelling gear (28) engages with tooth bar (29).
2. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, is characterized in that: described first dovetail groove slide block (11) is fixed by screws on the first main frame crossbeam (2); Described first line slideway (12) is fixed by screws in benchboard lower surface (32); Second line slideway (14) is also fixed by screws in benchboard upper surface (33); Described screw shell (22) is fixed by screws in the unthreaded hole (21) of benchboard (13).
3. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, is characterized in that: the diameter of axle of described screw shell (22) is parallel with benchboard lower surface (32).
4. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, it is characterized in that: described sliding screw (23) is installed on another main frame crossbeam pointed by unthreaded hole (21) opening by bearing, and sliding screw (23) and main frame crossbeam joining part are smooth.
5. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, it is characterized in that: in the angle of 7.181 ° between described benchboard upper surface (33) and benchboard lower surface (32), therefore in the angle of 7.181 ° between the second line slideway (14) and the first main frame crossbeam (2); The diameter of axle of screw shell (22) and benchboard upper surface (33) are in the angle of 7.181 °.
6. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, is characterized in that: described radial guiding mechanism and mechanism for axial adjusting are provided with auto-lock function.
7. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, is characterized in that: described four cover roll location guiding mechanisms are centrosymmetric arrangement on four-high mill.
8. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, is characterized in that: described benchboard upper surface (33) and benchboard lower surface (32) are provided with some screwed holes (34).
9. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, is characterized in that: described roller assembly (18) is also provided with shaft coupling (17).
10. one according to claim 1 accurate section bar four roller combined pass adjustment of rolling mill device, it is characterized in that: described roller assembly (18) is connected with back-moving spring (20) by back-moving spring hook (19), the other end of back-moving spring (20) is connected with milling train fixed head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520632966.7U CN204892558U (en) | 2015-08-20 | 2015-08-20 | Accurate four roller sets of section bar close pass rolling mill adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520632966.7U CN204892558U (en) | 2015-08-20 | 2015-08-20 | Accurate four roller sets of section bar close pass rolling mill adjusting device |
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| CN204892558U true CN204892558U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520632966.7U Withdrawn - After Issue CN204892558U (en) | 2015-08-20 | 2015-08-20 | Accurate four roller sets of section bar close pass rolling mill adjusting device |
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| CN (1) | CN204892558U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032941A (en) * | 2015-08-20 | 2015-11-11 | 南京工程学院 | Adjustment device of four-roller combined hole-type rolling mill for precise sections |
| CN107470365A (en) * | 2016-06-12 | 2017-12-15 | 河北德乐机械科技股份有限公司 | The battery pole piece rolling equipment of reasonable bearing clearance |
| CN108856312A (en) * | 2018-07-10 | 2018-11-23 | 中国科学院金属研究所 | A kind of multiple rows of adjustable rolling guide mechanism for y-type rolling mill |
| CN115846416A (en) * | 2023-02-08 | 2023-03-28 | 厦门航天思尔特机器人***股份公司 | Roll changing adjusting device of metal rolling mill |
-
2015
- 2015-08-20 CN CN201520632966.7U patent/CN204892558U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032941A (en) * | 2015-08-20 | 2015-11-11 | 南京工程学院 | Adjustment device of four-roller combined hole-type rolling mill for precise sections |
| CN107470365A (en) * | 2016-06-12 | 2017-12-15 | 河北德乐机械科技股份有限公司 | The battery pole piece rolling equipment of reasonable bearing clearance |
| CN107470365B (en) * | 2016-06-12 | 2019-09-27 | 河北德乐机械科技股份有限公司 | The battery pole piece rolling equipment of reasonable bearing clearance |
| CN108856312A (en) * | 2018-07-10 | 2018-11-23 | 中国科学院金属研究所 | A kind of multiple rows of adjustable rolling guide mechanism for y-type rolling mill |
| CN108856312B (en) * | 2018-07-10 | 2024-03-12 | 中国科学院金属研究所 | Multi-row adjustable rolling guide mechanism for Y-type rolling mill |
| CN115846416A (en) * | 2023-02-08 | 2023-03-28 | 厦门航天思尔特机器人***股份公司 | Roll changing adjusting device of metal rolling mill |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151223 Effective date of abandoning: 20170620 |