CN108953400B - Quick butt joint device of multi-roll straightener transmission coupling - Google Patents
Quick butt joint device of multi-roll straightener transmission coupling Download PDFInfo
- Publication number
- CN108953400B CN108953400B CN201810591885.5A CN201810591885A CN108953400B CN 108953400 B CN108953400 B CN 108953400B CN 201810591885 A CN201810591885 A CN 201810591885A CN 108953400 B CN108953400 B CN 108953400B
- Authority
- CN
- China
- Prior art keywords
- guide post
- transmission
- knob
- straightener
- shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
- F16D1/112—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts comprising torque-transmitting surfaces, e.g. bayonet joints
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structure Of Transmissions (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to the technical field of straightener use, in particular to a quick butt joint device for a transmission coupling of a multi-roll straightener, which can conveniently and quickly complete the connection between the multi-roll straightener and a transmission journal dividing box. The technical key points comprise that: the straightening machine comprises a straightening machine body, wherein the end part of each straightening roller in the straightening machine body is respectively connected with a coupler, the straightening machine further comprises a transmission branch shaft box, the end part of the straightening machine body is vertically provided with a connecting plate, one end of each coupler, far away from the straightening roller, is rotatably connected with the connecting plate in a positioning mode, a guide post is arranged on the transmission branch shaft box and horizontally protrudes from one side of the coupler, and a guide hole matched with the guide post is formed in the connecting plate. By adopting the technical scheme, when the straightening machine body is moved to the position close to the transmission branch shaft box, the guide hole is aligned with the guide post at first, so that the guide post can be inserted into the guide hole, the primary positioning of the straightening machine body and the transmission branch shaft box is realized, the connection accuracy of the coupler and the transmission branch shaft box can be improved, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of straightener use, in particular to a quick butt joint device for a transmission coupling of a multi-roll straightener.
Background
The straightening machine is equipment for straightening metal sections, bars, pipes, wires and the like. The straightener extrudes the bar material and the like through the straightening roller to change the straightness. Generally, two rows of straightening rollers are provided, and the number of the straightening rollers is different. There are also two-roll straightening machines, which straighten materials of different diameters by means of the angular change of two rolls (concave in the middle, hyperbolic roll). With the improvement of the production efficiency requirement of modern production lines, a multi-roll straightener is mostly adopted in actual use, and each roll is connected with a transmission split shaft box through a coupler.
However, in such a multi-roll leveler, when the transmission split cases are connected, it is necessary to connect the couplings connected to the rolls to the transmission split cases one by one. Because the number of the rolls of the multi-roll straightener is more, the operable installation space on the transmission branch shaft box is smaller, the installation is very difficult, and the time consumption is long, thereby leading to lower working efficiency.
Disclosure of Invention
The invention aims to provide a quick butt joint device for transmission couplers of a multi-roll straightener, which can conveniently and quickly complete the connection of a plurality of couplers and transmission branch boxes of the multi-roll straightener, improve the production efficiency and the automation degree and reduce the labor intensity of workers.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a quick interfacing apparatus of multi-roll straightener transmission shaft coupling, includes the straightener body, this internal each straightener roll tip of straightener is connected with the shaft coupling respectively, still includes the transmission journal box, the vertical connecting plate that is equipped with of straightener body tip, each the shaft coupling is kept away from the one end of straightener roll with the connecting plate location is rotated and is connected, the transmission journal box with one side horizontal protrusion of coupling joint is equipped with the guide post, be equipped with on the connecting plate with guide post complex guiding hole.
Furthermore, each coupler is connected with the connecting plate through a connecting shaft, the connecting shaft is positioned and rotatably arranged in the connecting plate, one side of the connecting shaft is connected with the coupler, and the other side of the connecting shaft is connected with the spline of the transmission sub-axle box.
Furthermore, one end, far away from the transmission branch shaft box, of the guide post is rotatably provided with a locking plate, and the locking plate rotates along a plane perpendicular to the axial direction of the guide post and can rotate to the outside of the guide post.
Furthermore, the lockplate is fan-shaped, and its axis of rotation is located guide post terminal surface edge, the guide post tip rotate be equipped with the drive gear of the fan-shaped marginal gear meshing of lockplate.
Furthermore, the end part of the guide post is provided with a knob for driving the driving gear to rotate.
Furthermore, the lockplate reaches drive gear all is located between the guide post both ends face, the knob is located the guide post is kept away from the one end of transmission branch axle box, just the knob is embedded to be located the guide post tip, the guide post tip is equipped with the restriction of knob rotation angle.
Furthermore, the lockplate reaches drive gear all is located between the guide post both ends face, the knob is located the guide post is kept away from the one end of transmission branch axle box, just the knob is embedded to be located the guide post tip, the guide post tip is equipped with the restriction of knob rotation angle.
Furthermore, magnets capable of being adsorbed to each other are arranged on the side wall of the knob and the wall of the limiting groove respectively.
Further, the maximum rotation angle of the knob in the limiting groove is 165 °.
The invention has the following beneficial effects:
1. the shaft coupling is rotatably connected to the connecting plate in a positioning mode, the guide post is horizontally arranged on the transmission branch shaft box, and the guide hole matched with the guide post is formed in the connecting plate.
2. A locking plate is rotatably arranged at one end of the guide column, which is far away from the transmission branch shaft box, is in a fan shape and is driven by a driving gear. Therefore, in a normal state, the locking plate is positioned in the section of the guide post, and the guide post is not influenced to be inserted into the guide hole; waiting that the guide post inserts in the guiding hole, drive gear drives the lockplate and rotates, makes the lockplate rotate outside the guide post to can restrict the connecting plate between lockplate and transmission split axle box outer wall, avoid the transmission in-process, the guide post breaks away from with the guide hole, influences the connection effect of shaft coupling.
3. The knob driving gear is used for rotating, the limiting groove is used for limiting the rotating angle of the knob, in an initial state, the corners of the sector locking plate are respectively located at the circumferential edge of the guide column, the driving gear is meshed with the middle of the arc of the locking plate, and one side wall of the knob is attached to one side wall of the limiting groove; when the connecting plate needs to be locked between the locking plate and the transmission branch shaft box, the knob is rotated to enable the connecting plate to be attached to the other side wall of the limiting groove, the fan-shaped locking plate is gradually rotated outwards along with the guide column by the driving of the driving gear, and finally the part of the locking plate is rotated out of the guide column, and one corner of the locking plate is stopped at the position where the locking plate is tangent to the driving gear. Set up like this, both can make lockplate go out the guide post on the at utmost outside, the area of increase lockplate and connecting plate butt improves the steadiness of locking, can avoid lockplate excessively rotatory again, makes the edge and the drive gear of lockplate break away from, influences follow-up drive gear drive locking plate and rotates.
4. Through at the knob lateral wall, and set up the magnet that can adsorb each other on the inside wall in restriction groove. Therefore, when the knob is rotated to one side of the limiting groove, the magnet can enable the knob to be firmly stopped at the position, and the phenomenon that the knob is continuously rotated under gravity or other factors to change the position of the locking plate and influence the locking effect is avoided.
5. When the knob is twisted from one side of the limiting groove to the other side, the twisting angle of the knob is 165 degrees, slightly smaller than 180 degrees, and the twisting angle is larger. Therefore, when one side of the knob is attached to one side of the limiting groove, the other side of the knob can be far away from the other side of the limiting groove as far as possible, and the phenomenon that the knob is attracted by the magnets attracted by the sides to influence the positioning of the knob is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall structure of a transmission coupling quick butt joint device of a multi-roll straightener, and is mainly used for showing the overall structure of the coupling and a transmission split shaft box in a connection state.
Fig. 2 is a schematic view of the overall structure of the present invention, which is mainly used for showing the overall structure when the coupling and the transmission split shaft box are disengaged.
Fig. 3 is a schematic view of the guide post structure.
Fig. 4 is a sectional view taken along line a-a in fig. 3.
Fig. 5 is a schematic view showing a state in which the locking plate of fig. 4 is rotated out of the guide post.
Fig. 6 is a sectional view taken along line B-B in fig. 3.
In the figure: 1. a straightener body; 11. moving the plate; 2. a coupling; 3. a connecting shaft; 4. a connecting plate; 41. a guide hole; 5. a guide post; 6. a transmission sub-shaft box; 61. a spline shaft; 7. a locking plate; 71. a drive gear; 8. a knob; 81. a limiting groove; 9. and a magnet.
Detailed Description
The technical solution will be clearly and completely described below with reference to the specific embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a quick butt joint device for a transmission coupling of a multi-roll straightener, which comprises a straightener body 1 arranged on a moving plate 11, and universal wheels are arranged at the bottom of the moving plate 11, so that the straightener body 1 can be conveniently moved to a required position. A plurality of straightening rollers are arranged in the straightening machine body 1, one end of each straightening roller is connected with a coupler 2, and all couplers 2 are positioned at the same end of the straightening machine body 1. One end of the moving plate 11, which is close to the couplers 2, extends outwards, the end part of the extending section of the moving plate is vertically and fixedly connected with a connecting plate 4, one end of each coupler 2 is connected with a straightening roller, and the other end of each coupler is connected with the connecting plate 4 through a connecting shaft 3. The connecting shaft 3 is positioned and rotatably arranged in the connecting plate 4, and the axial direction of the connecting shaft is vertical to the plane of the connecting plate 4 and can rotate in the plane. One side of the connecting shaft 3 is connected with the end part of the coupler 2, and the other side of the connecting shaft is in the shape of a spline shaft 61 sleeve and can be in spline connection with the convex spline shaft 61 on the transmission sub-axle box 6, so that the coupler 2 is connected with the transmission sub-axle box 6.
In order to accurately complete the connection between the coupling 2 and the transmission sub-shaft housing 6, referring to fig. 1 and 2, in this embodiment, a guide post 5 is horizontally protruded at one side of the transmission sub-shaft housing 6 connected to the coupling 2, and a guide hole 41 matched with the guide post 5 is opened on the connecting plate 4. In this way, when the straightener body 1 is moved to a position close to the transmission branch shaft box 6, the guide hole 41 is aligned with the guide post 5, so that the guide post 5 can be inserted into the guide hole 41, and the primary positioning of the straightener body 1 and the transmission branch shaft box 6 is realized; and then, continuously approaching the straightener body 1 to the transmission branch shaft box 6 to enable the spline shaft 61 sleeve of the connecting shaft 3 to be sleeved with the spline shaft 61 on the transmission branch shaft box 6, finishing the butt joint operation, and enabling the connecting shaft 3 and the coupler 2 to drive the straightening roller to rotate when the spline shaft 61 of the transmission branch shaft box 6 rotates.
In order to further enhance the stability of the connection between the connecting shaft 3 and the transmission sub-shaft box 6 and avoid the separation of the connecting shaft 3 and the transmission sub-shaft box 6 during the transmission process, referring to fig. 3, 4 and 5, in this embodiment, a locking plate 7 is rotatably disposed near one end of the guide post 5 far away from the transmission sub-shaft box 6. The locking plate 7 is in the shape of a sector and is rotatably connected with the guide post 5 through a rotating shaft at the center of the circle, the rotating shaft is positioned at the circumferential edge of the longitudinal section of the guide post 5 and is parallel to the axial direction of the guide post 5. In this embodiment, two locking plates 7 are symmetrically arranged, in a normal state, the two locking plates 7 are located in the longitudinal section of the guide post 5, when the locking plate 7 rotates relative to the guide post 5, the guide post 5 can be rotated out, so that after the guide post 5 penetrates through the guide hole 41 (marked in fig. 2), the locking plate 7 is rotated to the outside of the guide post 5, the connecting plate 4 can be limited between the outer walls of the locking plate 7 transmission branch shaft boxes 6, and therefore the guide post 5 is prevented from being separated from the guide hole 41, and the connecting effect of the coupler 2 is affected.
Referring to fig. 4, 5 and 6, a driving gear 71 is rotatably disposed between the two locking plates 7 at the center of the guide post 5, and both sides of the driving gear 71 are respectively engaged with the edge gears of the two sector locking plates 7. The center of the driving gear 71 is fixedly connected with a rotating shaft, and the rotating shaft is rotatably connected with the guide post 5. One end of the rotating shaft passes through the driving gear 71 to be rotatably connected with the guide post 5, the other end of the rotating shaft extends out of one end of the guide post 5 far away from the transmission branch shaft box 6, and the end is connected with a knob 8; meanwhile, the guide posts 5 positioned at both sides of the driving gear 71 are fixedly connected through two small rotating shafts. Referring to fig. 3, a limiting groove 81 is formed at one end of the guide post 5 close to the knob 8, and the knob 8 is rotatably disposed in the limiting groove 81 to limit the rotation angle of the knob 8. In this embodiment, the limiting grooves 81 are fan-shaped and arranged in two circumferential arrays along the end surface of the guiding column 5.
In an initial state, the corners of the two sector locking plates 7 are respectively positioned at the circumferential edges of the guide columns 5, two sides of the driving gear 71 are respectively meshed with the middle parts of the circular arcs of the two locking plates 7, and one side wall of the knob 8 is attached to one side wall of the limiting groove 81; when the connecting plate 4 needs to be locked between the locking plate 7 and the transmission branch shaft box 6, the knob 8 is rotated to be attached to the other side wall of the limiting groove 81, the sector-shaped locking plate 7 is gradually rotated outwards of the guide post 5 along with the driving gear 71 due to the driving of the driving gear 71, and finally the locking plate 7 is partially rotated out of the guide post 5, and one corner of the locking plate 7 is stopped at the position where the locking plate 7 is tangent to the driving gear 71. By means of the arrangement, the locking plate 7 can be enabled to be rotated out of the guide column 5 to the maximum extent, the abutting area of the locking plate 7 and the connecting plate 4 is increased, the locking stability is improved, excessive rotation of the locking plate 7 can be avoided, the edge of the locking plate 7 is separated from the driving gear 71, and the subsequent driving gear 71 is influenced to drive the locking plate 7 to rotate.
Further, referring to fig. 3, magnets 9 capable of attracting each other are attached to the side wall of the knob 8 and the inner side wall of the regulating groove 81. Thus, when the knob 8 is rotated to the side of the limiting groove 81, the magnet 9 can make the knob 8 stay at the position firmly, and the knob 8 is prevented from continuing to rotate under the gravity or other factors, so that the position of the locking plate 7 is changed, and the locking effect is prevented from being influenced.
In the embodiment, when the knob 8 is twisted from one side of the restriction slot 81 to the other side, the twist angle is 165 °, slightly smaller than 180 °, and the twist angle is larger. Thus, when one side of the knob 8 is attached to one side of the limiting groove 81, the other side of the knob can be kept away from the other side of the limiting groove 81 as far as possible, and the phenomenon that the mutually attracted magnets 9 on the sides attract the knob 8 to affect the positioning of the knob 8 is avoided.
Claims (8)
1. The utility model provides a quick interfacing apparatus of multi-roll straightener transmission shaft coupling, includes straightener body (1), each straightener roller tip in straightener body (1) is connected with shaft coupling (2) respectively, still includes transmission journal box (6), its characterized in that: a connecting plate (4) is vertically arranged at the end part of the straightener body (1), one end of each coupler (2) far away from the straightening roll is connected with the connecting plate (4) in a positioning and rotating manner, a guide post (5) is horizontally and convexly arranged on one side of the transmission branch shaft box (6) connected with the coupler (2), and a guide hole (41) matched with the guide post (5) is formed in the connecting plate (4);
the guide post (5) is kept away from one end of the transmission branch shaft box (6) is rotatably provided with a locking plate (7), and the locking plate (7) rotates along a plane perpendicular to the axial direction of the guide post (5) and can rotate to the outside of the guide post (5).
2. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 1, characterized in that: each shaft coupling (2) is respectively connected with the connecting plate (4) through a connecting shaft (3), the connecting shaft (3) is positioned and rotated in the connecting plate (4), one side of the connecting shaft (3) is connected with the shaft coupling (2), and the other side of the connecting shaft is in spline connection with the transmission branch shaft box (6).
3. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 1, characterized in that: lockplate (7) are fan-shaped, and its axis of rotation is located guide post (5) terminal surface edge, guide post (5) tip rotate be equipped with the drive gear (71) of the fan-shaped marginal gear meshing of lockplate (7).
4. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 3, characterized in that: and a knob (8) for driving the driving gear (71) to rotate is arranged at the end part of the guide post (5).
5. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 4, wherein: lockplate (7) reach drive gear (71) all are located between guide post (5) both ends face, knob (8) are located guide post (5) are kept away from the one end of transmission branch axle box (6), just embedded the locating in knob (8) guide post (5) tip, guide post (5) tip is equipped with the restriction knob (8) rotation angle's restriction groove (81).
6. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 5, wherein: when the knob (8) rotates from one side wall of the limiting groove (81) to the other side wall, one edge of the locking plate (7) moves from the outer periphery of the guide post (5) to the position tangent to the driving gear (71).
7. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 6, characterized in that: and magnets (9) capable of being adsorbed to each other are respectively arranged on the side wall of the knob (8) and the groove wall of the limiting groove (81).
8. The quick butt joint device for the transmission coupling of the multi-roll straightener as claimed in claim 7, wherein: the maximum rotation angle of the knob (8) in the limiting groove (81) is 165 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591885.5A CN108953400B (en) | 2018-06-11 | 2018-06-11 | Quick butt joint device of multi-roll straightener transmission coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591885.5A CN108953400B (en) | 2018-06-11 | 2018-06-11 | Quick butt joint device of multi-roll straightener transmission coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953400A CN108953400A (en) | 2018-12-07 |
| CN108953400B true CN108953400B (en) | 2020-04-21 |
Family
ID=64488117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591885.5A Active CN108953400B (en) | 2018-06-11 | 2018-06-11 | Quick butt joint device of multi-roll straightener transmission coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953400B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283255A (en) * | 2020-10-26 | 2021-01-29 | 张家港宏昌钢板有限公司 | Stable and efficient coupling butt joint device and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1507467A1 (en) * | 1987-12-21 | 1989-09-15 | Производственное объединение "Новокраматорский машиностроительный завод" | Stand train |
| JP3362072B2 (en) * | 1993-09-27 | 2003-01-07 | 株式会社中田製作所 | Drive shaft connecting device for cold roll forming machine |
| CN200955553Y (en) * | 2006-03-29 | 2007-10-03 | 太原市通泽成套设备有限公司 | Coupler device of quick mounting-dismounting universal coupling |
| CN100537067C (en) * | 2007-12-14 | 2009-09-09 | 浙江金盾压力容器有限公司 | Flat roll finishing mill for processing steel cylinder pipe body |
| CN202114104U (en) * | 2011-06-02 | 2012-01-18 | 太原科技大学 | Straightening machine with replaceable straightening roller system |
| CN204974822U (en) * | 2015-09-18 | 2016-01-20 | 康凤明 | Transmission system of straightening machine and applied this transmission system's straightening machine |
-
2018
- 2018-06-11 CN CN201810591885.5A patent/CN108953400B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108953400A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108953400B (en) | Quick butt joint device of multi-roll straightener transmission coupling | |
| CN108927424B (en) | Automatic change quick interfacing apparatus of straightener | |
| CN104084453B (en) | Multi-roller type stretching, bending and straightening machine | |
| CN209667971U (en) | A kind of friction rolling bed of accurate positioning | |
| CN102357539A (en) | Built-in three-roller guiding device | |
| CN107695134A (en) | Eight roller straighteners | |
| CN209407138U (en) | A kind of cold-bending forming machine that roll width can be adjusted | |
| US2179849A (en) | Turret type roll forming-machine | |
| CN209094868U (en) | Symmetrical lug plate holes proper alignment positioning apparatus is adjusted in a kind of multipurpose | |
| CN207297751U (en) | Injection molding machine special gear box | |
| CN205966759U (en) | Flat interchangeable rolling mill machine row that stand of gesture adjustable | |
| CN204553740U (en) | A kind of ball screw Inner eycle mechanism | |
| CN208906230U (en) | A kind of veneer reeling machine feeding pressure mechanism | |
| US4341523A (en) | Apparatus for manufacturing paper pipes | |
| CN207756614U (en) | Multi-wire cutting and cold control bypass device | |
| CN106217663A (en) | A kind of take-up of diamond fretsaw process equipment | |
| CN208261523U (en) | A kind of mandril pre-rotation high-precision punch | |
| CN206869514U (en) | A kind of cage milling window positioning fixture | |
| CN207463306U (en) | A kind of fiber pulverizer | |
| CN220976077U (en) | Titanium wire feeding device | |
| CN206425370U (en) | A kind of level(l)ing machine and leveling equipment | |
| CN217142703U (en) | Cutting mechanism and laser pipe cutting machine | |
| CN204470327U (en) | A kind of smoothing roll structure | |
| CN205362752U (en) | Metal pipe drilling device | |
| CN107701663A (en) | Injection machine special gear box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |