CN113560370A - Flattening device of stainless steel strip straightener - Google Patents
Flattening device of stainless steel strip straightener Download PDFInfo
- Publication number
- CN113560370A CN113560370A CN202110828206.3A CN202110828206A CN113560370A CN 113560370 A CN113560370 A CN 113560370A CN 202110828206 A CN202110828206 A CN 202110828206A CN 113560370 A CN113560370 A CN 113560370A
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- stainless steel
- wall
- steel strip
- rotating shaft
- front side
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 39
- 239000010935 stainless steel Substances 0.000 title claims abstract description 39
- 238000004049 embossing Methods 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000008859 change Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses a flattening device of a stainless steel strip straightener, which comprises: a distance adjusting mechanism; the box body is fixedly connected to the front side of the distance adjusting mechanism; the number of the guide blocks is two, and the guide blocks are respectively and fixedly connected to the central positions of the left side wall and the right side wall of the box body; the box door is hinged to the front end of the left side of the box body; the two flattening mechanisms are respectively arranged at the upper end and the lower end of the inner cavity of the distance adjusting mechanism, and are vertically symmetrical relative to the central point of the distance adjusting mechanism. The invention can change the space between the straightening rollers, can flatten and straighten stainless steel bands with different thicknesses, has strong practicability and wider application, can realize synchronous completion of straightening and embossing, reduces intermediate links, shortens the processing period, improves the processing efficiency and greatly meets the requirements of processing the stainless steel bands.
Description
Technical Field
The invention relates to the technical field of building material processing, in particular to a flattening device of a stainless steel strip straightener.
Background
The stainless steel strip has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Corrosion resistance in the atmosphere, and timely cleaning to avoid corrosion if it is an industrial atmosphere or a heavily polluted area. Is suitable for processing, storing and transporting food. Has good processing property and weldability. Plate heat exchangers, corrugated pipes, household products, building materials, chemistry, food industry, etc.;
the straightening machine is used for straightening pipes, iron wires, steel belts and the like after shape walking, the straightening modes are different according to different products, and the stainless steel belts are mainly flattened by straightening rollers. The purpose is different, the thickness of steel band is also different, at present, the interval between the straightener flattening roller commonly used is big often difficult to adjust, can only flatten the straightening to the stainless steel band of same thickness, and the practicality is poor, uses not extensively enough, sometimes for making the steel band have anti-skidding performance, usually can emboss on the steel band surface, just at this moment just needs other equipment to accomplish, and the intermediate link is more, has invisibly prolonged the processing cycle, causes machining efficiency step-down, consequently, needs to provide a multi-functional stainless steel band straightener.
Disclosure of Invention
The invention aims to provide a flattening device of a stainless steel strip straightener, and at least solves the problems that in the prior art, the distance between straightening rollers is difficult to adjust, stainless steel strips with various thicknesses cannot be flattened, the use is not wide enough, the embossing function is not available, the number of links between two processing technologies is large, and the processing efficiency is low.
In order to achieve the purpose, the invention provides the following technical scheme: a flattening device of a stainless steel strip straightener comprises:
a distance adjusting mechanism;
the box body is fixedly connected to the front side of the distance adjusting mechanism;
the number of the guide blocks is two, and the guide blocks are respectively and fixedly connected to the central positions of the left side wall and the right side wall of the box body;
the box door is hinged to the front end of the left side of the box body;
the two flattening mechanisms are respectively arranged at the upper end and the lower end of the inner cavity of the distance adjusting mechanism, and are vertically symmetrical relative to the central point of the distance adjusting mechanism.
Preferably, the distance adjustment mechanism includes: the front side of the shell is fixedly connected with the rear side of the box body; the guide rods are two in number and are respectively and fixedly connected to the left side and the right side of the inner cavity of the shell along the vertical direction; the first motor is arranged at the center of the upper surface of the shell; one end of the screw is locked at the output end of the first motor through a coupler, and the other end of the screw is rotatably connected with the bottom end of the inner wall of the shell through a bearing; the supporting plates are in two number and are respectively in threaded connection with the upper end and the lower end of the outer wall of the screw rod, and the two sides of the supporting plates are sleeved with the outer wall of the guide rod.
Preferably, the threads of the upper part and the lower part of the outer wall of the screw are positive threads and negative threads.
Preferably, the flattening mechanism includes: a gusset installed at a front side of the support plate; the first rotating shafts are arranged on the front side of the angle plate from left to right through cylindrical roller bearings; the straightening roller is arranged on the front side of the outer wall of the first rotating shaft; the first chain wheel is arranged on the rear side of the outer wall of the first rotating shaft; the chain is connected to the outer wall of the first chain wheel; and the embossing assembly is arranged at the left end of the upper surface of the angle plate and is connected with the chain.
Preferably, the straightening roller and the center point of the guide block are in the same plane.
Preferably, the embossing assembly comprises: the second motor is arranged at the left end of the upper surface of the angle plate; the second rotating shaft is arranged at the left end of the front side of the angle plate through a cylindrical roller bearing, the rear end of the second rotating shaft is locked with the output end of a second motor through a coupler, and sliding grooves are formed in the front side of the outer wall of the second rotating shaft along the circumferential direction; the second chain wheel is arranged on the rear side of the outer wall of the second rotating shaft and is connected with the chain; the sliding block is embedded in the inner cavity of the sliding groove; the embossing roller is fixedly connected to the outer side of the sliding block; and the fastening bolt is screwed on the front side of the second rotating shaft and tightly contacts the embossing roller to lock the embossing roller.
Preferably, the number of the sliding grooves is four, and the sliding grooves are distributed on the outer wall of the second rotating shaft at intervals of 90 degrees clockwise.
The flattening device of the stainless steel strip straightener provided by the invention has the beneficial effects that:
1. according to the invention, the screw rod is driven by the first motor to rotate clockwise or anticlockwise, the two support plates can move inwards or outwards simultaneously under the limiting action of the guide rod, the purpose of changing the distance between the straightening rollers is achieved, the stainless steel strips with different thicknesses can be flattened and straightened, the practicability is strong, and the use is wider;
2. the second motor drives the second chain wheel to rotate, the straightening roller and the embossing roller can synchronously rotate under the matching of the chain and the first chain wheel, the straightening roller performs rolling forming on the stainless steel strip, and the embossing roller changes the surface form of the stainless steel strip after rolling, so that the straightening and embossing can be synchronously completed, intermediate links are reduced, the processing period is shortened, the processing efficiency is improved, and the processing requirement of the stainless steel strip is greatly met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top cross-sectional view of the flattening mechanism of the present invention;
fig. 3 is an enlarged view of the invention at a.
In the figure: 2. the distance adjusting mechanism comprises a distance adjusting mechanism 21, a shell, 22, a guide rod 23, a first motor 24, a screw rod 25, a support plate 3, a box body 4, a guide block 5, a box door 6, a flattening mechanism 61, an angle plate 62, a first rotating shaft 63, a straightening roller 64, a first chain wheel 65, a chain 66, an embossing assembly 661, a second motor 662, a second rotating shaft 663, a sliding groove 664, a second chain wheel 665, a sliding block 666, an embossing roller 667 and a fastening bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a stainless steel strip straightener flattening device, including roll adjustment mechanism 2, the box 3, guide block 4, chamber door 5 and flattening mechanism 6, 3 fixed connection in the front side of roll adjustment mechanism 2 of box, 4 quantity of guide block are two, respectively fixed connection is put in the lateral wall central point about box 3, inject stainless steel strip position, guide stainless steel strip passes from between the leveling roller 63, chamber door 5 articulates in the left side front end of box 3, flattening mechanism 6 quantity is two, install both ends about the inner chamber of roll adjustment mechanism 2 respectively, two flattening mechanism 6 are for the central point longitudinal symmetry of roll adjustment mechanism 2.
As a preferable scheme, further, the distance adjusting mechanism 2 includes a housing 21, two guide rods 22, a first motor 23, two screw rods 24 and a support plate 25, the front side of the housing 21 is fixedly connected with the rear side of the box body 3, the number of the guide rods 22 is two, the two guide rods are respectively and fixedly connected with the left side and the right side of the inner cavity of the housing 21 along the up-down direction, the support plate 25 is limited to enable the support plate 25 to move vertically, the first motor 23 is installed at the central position of the upper surface of the housing 21, one end of the screw rod 24 is locked at the output end of the first motor 23 through a coupler, the other end of the screw rod is rotatably connected with the bottom end of the inner wall of the housing 21 through a bearing, the upper and lower threads of the outer wall of the screw rod 24 are positive and negative threads, when the screw rod 24 rotates clockwise or counterclockwise, the threads of the screw rod 24 can drive the two support plates 25 to move inward or outward simultaneously, the number of the two support plates 25 are respectively screwed to the upper and lower ends of the outer wall of the screw rod 24, and both sides are sleeved with the outer wall of the guide rod 22.
Preferably, the flattening mechanism 6 includes a corner plate 61, a first rotating shaft 62, a plurality of straightening rollers 63, a first chain wheel 64, a chain 65 and an embossing assembly 66, the corner plate 61 is mounted on the front side of the supporting plate 25, the first rotating shaft 62 is mounted on the front side of the corner plate 61 through cylindrical roller bearings from left to right, the straightening rollers 63 are mounted on the front side of the outer wall of the first rotating shaft 62, the first chain wheel 64 is mounted on the rear side of the outer wall of the first rotating shaft 62, the plurality of straightening rollers 63 can rotate synchronously through the cooperation of the first chain wheel 64 and the chain 65, the chain 65 is connected to the outer wall of the first chain wheel 64, and the embossing assembly 66 is mounted on the left end of the upper surface of the corner plate 61 and is connected with the chain 65.
Preferably, the straightening rollers 63 are in the same plane as the center point of the guide block 4, ensuring that the stainless steel strip can pass between the straightening rollers 63.
Preferably, the embossing assembly 66 further includes a second motor 661, a second rotating shaft 662, a sliding groove 663, a second chain wheel 664, a sliding block 665, the embossing roller 666 and a fastening bolt 667, the second motor 661 is mounted on the left end of the upper surface of the angle plate 61, the second rotating shaft 662 is mounted on the left end of the front side of the angle plate 61 through a cylindrical roller bearing, the rear end is locked with the output end of the second motor 661 through a coupling, the front side of the outer wall of the second rotating shaft 662 is circumferentially provided with four sliding grooves 663, the number of the sliding grooves 663 is four, the sliding grooves 663 are distributed on the outer wall of the second rotating shaft 662 at 90 degrees clockwise, the embossing roller 666 can be limited from four directions, the axial rotation capacity of the embossing roller 666 is improved, the second chain wheel 664 is mounted on the rear side of the outer wall of the second rotating shaft 662 and is connected with the chain 65, the synchronous rotation of the straightening roller 63 and the embossing roller 666 can be realized under the transmission of the chain 65, the inner cavity of the sliding block 663, the embossing roller 666 is fixedly connected to the outer side of the sliding block 665, the surface of the embossing roller 666 is uneven, the surface of a stainless steel strip can be rolled, the embossing purpose is achieved, the fastening bolt 667 is screwed on the front side of the second rotating shaft 662, and the fastening bolt 667 is tightly contacted with the embossing roller 666 to lock the embossing roller 666.
The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.
When straightening and embossing are needed, the first motor 23 is utilized to drive the screw rod 24 to rotate clockwise or anticlockwise according to the thickness of a deformed stainless steel strip, under the limiting action of the guide rod 22, the thread rotating force of the screw rod 24 can drive the two support plates 25 to move inwards or outwards simultaneously, the distance between the straightening rollers 63 located at the upper position and the lower position is gradually reduced or increased until the distance meets the straightening requirement of the stainless steel strip, and the first motor 23 is stopped to work;
inserting the stainless steel strip into the housing 21 from the guide block 4 on the right side, driving the second rotating shaft 662 to rotate through the second motor 661, driving the chain 65 to rotate by the second chain wheel 664, further driving the first rotating shaft 62 to rotate by the first chain wheel 64, so that the straightening roller 63 and the embossing roller 666 synchronously rotate, driving the stainless steel strip to move leftwards by the straightening roller 63, rolling and straightening the stainless steel strip, and when passing through the embossing roller 666, the embossing roller 666 utilizes the uneven surface of the embossing roller to roll the surface of the stainless steel strip, so that the smooth shape of the surface of the stainless steel strip is changed, and the straightening and embossing of the stainless steel strip are realized;
step three, when embossing is not needed, opening the box door 5, unscrewing the fastening bolt 667 from the second rotating shaft 662, pulling the embossing roller 666 to the front side, sliding the slider 665 along the chute 663 until the slider 665 is separated from the chute 663, completing the disassembly of the embossing roller 666, and thus removing the embossing function;
this device can change interval between the leveling roller 63, realizes the stainless steel strip of multiple thickness and flattens, uses more extensively, has the knurling function moreover, saves and links up the intermediate link between two manufacturing process, improves machining efficiency, more does benefit to the popularization.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A flattening device of a stainless steel strip straightener is characterized by comprising:
a distance adjusting mechanism (2);
the box body (3) is fixedly connected to the front side of the distance adjusting mechanism (2);
the number of the guide blocks (4) is two, and the guide blocks are respectively and fixedly connected to the center positions of the left side wall and the right side wall of the box body (3);
the box door (5) is hinged to the front end of the left side of the box body (3);
the flattening mechanisms (6) are two in number and are respectively installed at the upper end and the lower end of the inner cavity of the distance adjusting mechanism (2), and the flattening mechanisms (6) are symmetrical up and down relative to the central point of the distance adjusting mechanism (2).
2. The flattening device of a stainless steel strip straightener as claimed in claim 1, characterized in that: the distance adjusting mechanism (2) comprises:
the front side of the shell (21) is fixedly connected with the rear side of the box body (3);
the guide rods (22) are two in number and are respectively and fixedly connected to the left side and the right side of the inner cavity of the shell (21) along the vertical direction;
a first motor (23) mounted at the center of the upper surface of the housing (21);
one end of the screw rod (24) is locked at the output end of the first motor (23) through a coupler, and the other end of the screw rod is rotatably connected with the bottom end of the inner wall of the shell (21) through a bearing;
the number of the supporting plates (25) is two, the supporting plates are respectively in threaded connection with the upper end and the lower end of the outer wall of the screw rod (24), and the two sides of the supporting plates are sleeved with the outer wall of the guide rod (22).
3. The flattening device of a stainless steel strip straightener as claimed in claim 2, characterized in that: the threads of the upper part and the lower part of the outer wall of the screw rod (24) are positive threads and negative threads.
4. The flattening device of a stainless steel strip straightener as claimed in claim 1, characterized in that: the flattening mechanism (6) includes:
a gusset (61) attached to the front side of the support plate (25);
the number of the first rotating shafts (62) is several, and the first rotating shafts are arranged on the front side of the angle plate (61) from left to right through cylindrical roller bearings;
a straightening roller (63) mounted on the front side of the outer wall of the first rotating shaft (62);
a first chain wheel (64) mounted on the rear side of the outer wall of the first rotating shaft (62);
a chain (65) connected to an outer wall of the first sprocket (64);
and the embossing assembly (66) is arranged at the left end of the upper surface of the corner plate (61) and is connected with the chain (65) in a chain way.
5. The flattening device of the stainless steel strip straightener of claim 4, characterized in that: the center points of the straightening roller (63) and the guide block (4) are in the same plane.
6. The flattening device of the stainless steel strip straightener of claim 4, characterized in that: the embossing assembly (66) comprises:
a second motor (661) mounted to a left end of an upper surface of the angle plate (61);
the second rotating shaft (662) is mounted at the left end of the front side of the angle plate (61) through a cylindrical roller bearing, the rear end of the second rotating shaft is locked with the output end of the second motor (661) through a coupler, and sliding grooves (663) are formed in the front side of the outer wall of the second rotating shaft (662) along the circumferential direction;
a second chain wheel (664) which is installed at the rear side of the outer wall of the second rotating shaft (662) and is in chain connection with the chain (65);
the sliding block (665) is embedded in an inner cavity of the sliding groove (663);
an embossing roller (666) fixedly connected to the outside of the slider (665);
and the fastening bolt (667) is screwed on the front side of the second rotating shaft (662), and the fastening bolt (667) is tightly contacted with the embossing roller (666) to lock the embossing roller (666).
7. The flattening device of the stainless steel strip straightener of claim 6, characterized in that: the number of the sliding grooves (663) is four, and the sliding grooves are distributed on the outer wall of the second rotating shaft (662) at intervals of 90 degrees clockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828206.3A CN113560370A (en) | 2021-07-22 | 2021-07-22 | Flattening device of stainless steel strip straightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828206.3A CN113560370A (en) | 2021-07-22 | 2021-07-22 | Flattening device of stainless steel strip straightener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113560370A true CN113560370A (en) | 2021-10-29 |
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ID=78166076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110828206.3A Pending CN113560370A (en) | 2021-07-22 | 2021-07-22 | Flattening device of stainless steel strip straightener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113560370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798285A (en) * | 2024-02-22 | 2024-04-02 | 山东至信建设集团股份有限公司 | Construction steel bar straightening device |
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|---|---|---|---|---|
| JPS6046822A (en) * | 1983-08-24 | 1985-03-13 | Ig Tech Res Inc | Continuous forming roll device of thin metallic plate |
| CN2568674Y (en) * | 2002-08-29 | 2003-08-27 | 昆明理工大学 | Primary pole piece processing and preparing set |
| CN102294593A (en) * | 2011-08-30 | 2011-12-28 | 三能器具（无锡）有限公司 | Oiling, embossing and leveling machine |
| CN211360152U (en) * | 2019-12-16 | 2020-08-28 | 江苏磊澄智能机械装备有限公司 | Embossing and leveling integrated machine |
| CN111906177A (en) * | 2020-07-15 | 2020-11-10 | 重庆优实管业有限公司 | Online knurling device |
| CN112551038A (en) * | 2020-11-30 | 2021-03-26 | 中冶华天工程技术有限公司 | Vehicle type replacing roller way for row straightening machine |
| CN213111465U (en) * | 2020-07-06 | 2021-05-04 | 武汉盛耀精密机械制造有限公司 | Automobile spare and accessory part's fixture |
-
2021
- 2021-07-22 CN CN202110828206.3A patent/CN113560370A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046822A (en) * | 1983-08-24 | 1985-03-13 | Ig Tech Res Inc | Continuous forming roll device of thin metallic plate |
| CN2568674Y (en) * | 2002-08-29 | 2003-08-27 | 昆明理工大学 | Primary pole piece processing and preparing set |
| CN102294593A (en) * | 2011-08-30 | 2011-12-28 | 三能器具（无锡）有限公司 | Oiling, embossing and leveling machine |
| CN211360152U (en) * | 2019-12-16 | 2020-08-28 | 江苏磊澄智能机械装备有限公司 | Embossing and leveling integrated machine |
| CN213111465U (en) * | 2020-07-06 | 2021-05-04 | 武汉盛耀精密机械制造有限公司 | Automobile spare and accessory part's fixture |
| CN111906177A (en) * | 2020-07-15 | 2020-11-10 | 重庆优实管业有限公司 | Online knurling device |
| CN112551038A (en) * | 2020-11-30 | 2021-03-26 | 中冶华天工程技术有限公司 | Vehicle type replacing roller way for row straightening machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798285A (en) * | 2024-02-22 | 2024-04-02 | 山东至信建设集团股份有限公司 | Construction steel bar straightening device |
| CN117798285B (en) * | 2024-02-22 | 2024-05-24 | 山东至信建设集团股份有限公司 | Construction steel bar straightening device |
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Application publication date: 20211029 |
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