CN205496469U - Work or material rest is held in palm in ring rolls activity - Google Patents
Work or material rest is held in palm in ring rolls activity Download PDFInfo
- Publication number
- CN205496469U CN205496469U CN201620045112.3U CN201620045112U CN205496469U CN 205496469 U CN205496469 U CN 205496469U CN 201620045112 U CN201620045112 U CN 201620045112U CN 205496469 U CN205496469 U CN 205496469U
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- China
- Prior art keywords
- mandrel
- ring rolls
- load receiving
- receiving part
- bearing plate
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Abstract
The utility model provides a work or material rest is held in palm in ring rolls activity belongs to a ring processing equipment field, installs on the lathe bed of ring rolls, the highest dabber of installing of lathe bed, including relative two support mechanisms that set up, the dabber is located between two support mechanisms, the support mechanism includes load bearing member and drive assembly, drive assembly's output is connected load bearing member is used for the drive load bearing member follows the radial direction of dabber for lathe bed reciprocating motion, the order load bearing member is close to or keeps away from the dabber. This activity asks work or material rest to have the load bearing member who moves for the lathe bed, through the distance of control load bearing member for the dabber, and then the location when satisfying not unidimensional blank processing, and adds the mould as required, greatly increased the application range of ring rolls.
Description
Technical field
This utility model relates to ring process equipment field, in particular to a kind of ring rolls activity material supporting rack.
Background technology
Ring rolls is that ring rolls is divided into vertical ring rolling machine and bedroom ring rolls according to frame form and ring present position for processing the equipment that the workpiece with through hole is needs use, in order to easy to operate, occurs in that vertical ring rolls.When using vertical ring rolling machine to carry out the increasing hole of ring, reaming, rotated by home roll and drive the ring being positioned on core roller to rotate together, it is achieved increase hole and reaming.At present, a lot of rings add man-hour, are set on mandrel by ring blank, and the bracing frame supporting ring blank is fixed on lathe bed, and after blank reaming to certain size, blank can not continue reaming；And some blank needs carry out in processing or need more mold exchange to be processed just to complete processing, need to change to other rolling ring equipment blank, or reinstall new mould by after the mould release in rolling ring.Owing to bracing frame is fixed, it is impossible to on-demand adjustment bracing frame, relative to the distance between mandrel, is not easy to the installation of mould, and the installation of mould is restricted, and then the working range of ring rolls is caused to be extremely limited.
Inventor finds under study for action, and ring rolls of the prior art at least has a disadvantage in that during using
One, fix due to bracing frame, it is impossible to on-demand adjustment bracing frame, relative to the distance between mandrel, is not easy to the installation of mould, and the installation of mould is restricted, and then causes the working range of ring rolls to be extremely limited；
Two, reinstalling after dismounting mould, operating process is loaded down with trivial details, and operation is wasted time and energy；
Three, the ring rolls of same model can only process a class ring, and the range of ring rolls is little.
Utility model content
The purpose of this utility model is to provide a kind of ring rolls activity material supporting rack, fixes improving the bracing frame of the ring rolls of prior art, and causing ring rolls to be changed, Mould operation is loaded down with trivial details, waste time and energy, the problem that the scope of application of ring rolls is little.
This utility model is achieved in that
Based on above-mentioned purpose, this utility model provides a kind of ring rolls activity material supporting rack, is arranged on the lathe bed of ring rolls, described lathe bed is provided with mandrel, and including two support mechanisms being oppositely arranged, described mandrel is between said two support mechanism；
Described support mechanism includes supporting part and drives assembly, the outfan of described driving assembly connects described supporting part, for driving described supporting part to move back and forth along the radial direction of described mandrel relative to described lathe bed, make described supporting part near or away from described mandrel.
Preferably, described supporting part includes load receiving part and the connecting portion being connected with described load receiving part, connecting portion described in the outfan drive connection of described driving assembly.
Preferably, described support mechanism also includes that bearing plate, described bearing plate are positioned at the top of described load receiving part, and described bearing plate removably connects with described load receiving part.
Preferably, described bearing plate is connected by inclined-plane with described load receiving part, the inclined-plane on described load receiving part by the top of described load receiving part near the position of described mandrel the bottom of oblique described load receiving part away from the position of described mandrel.
Preferably, described bearing plate is connected by concaveconvex structure with described load receiving part, and described concaveconvex structure lays respectively on the inclined-plane of described bearing plate and the inclined-plane of described load receiving part.
Preferably, described concaveconvex structure is set to groove and the projection matched, and described groove is positioned on the inclined-plane of described bearing plate, and described projection is positioned on the inclined-plane of described load receiving part.
Preferably, described groove extends along the radial direction of described mandrel, corresponding, described projection extends along the radial direction of described mandrel.
Preferably, described driving assembly is hydraulic mechanism, supporting part described in the outfan drive connection of described hydraulic mechanism.
Preferably, also including bracing frame, support frame as described above is fixedly installed in described lathe bed, and described supporting part is slidably connected to support frame as described above.
Preferably, support frame as described above has chute, and described supporting part is provided with the slide block matched with described chute, and described slide block is positioned at described chute, described slide block can relative to described chute along described chute bearing of trend slide, make described supporting part near or away from described mandrel.
The beneficial effects of the utility model are:
In sum, this utility model provides a kind of ring rolls activity material supporting rack, and this activity material supporting rack is simple and reasonable, convenient processing and manufacture, low cost of manufacture；Meanwhile, this activity material supporting rack has the supporting part relative to lathe-bed moving, by controlling supporting part relative to the distance of mandrel, and then meets various sizes of blank and adds the location in man-hour, and on-demand interpolation mould, considerably increases the range of ring rolls.Specific as follows:
The embodiment of this utility model provides a kind of ring rolls activity material supporting rack, this activity material supporting rack includes two support mechanisms, two support mechanisms are oppositely arranged, and support mechanism includes supporting part, and the supporting part of two support mechanisms is used for being supported under blank, two supporting parts support blank jointly, support effect is good, the uniform force of blank, and the position of blank is more reliable and more stable, not easily shifted, the crudy of blank is high；Support mechanism also includes driving assembly, drives Component driver to connect supporting part, when carrying out blank and installing, internal diameter size according to different blanks adjusts the position of two supporting parts, after ensureing that blank is arranged on mandrel, two supporting parts play the effect supporting blank, it is ensured that blank is processed smoothly；Blank is after reaming completes, need to carry out rolling ring operation, according to processing request, set of molds is contained on mandrel, now, the distance between two supporting parts can be adjusted so that the gap between mandrel and supporting part increases, it is ensured that mould is installed on mandrel smoothly, mould easy for installation, the Setup Type of mould is many, is limited little by die size, and then considerably increases the range of ring rolls.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, the accompanying drawing used required in embodiment will be briefly described below, it is to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope it is not construed as, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
The structure chart (non-installation mold) of the rolling ring activity material supporting rack that Fig. 1 provides for this utility model；
The structure chart (installation mold) of the rolling ring activity material supporting rack that Fig. 2 provides for this utility model；
The bearing plate of the rolling ring activity material supporting rack that Fig. 3 provides for this utility model and the attachment structure figure of load receiving part；
The structure chart of the load receiving part of the rolling ring activity material supporting rack that Fig. 4 provides for this utility model；
The sectional view of the bearing plate of the rolling ring activity material supporting rack that Fig. 5 provides for this utility model.
Reference collects:
Mandrel 100, support mechanism 200, driving assembly 300, mould 400, blank 500,
Supporting part 101, load receiving part 102, connecting portion 103, bearing plate 104,
Groove 201, projection 202, bracing frame 203.
Detailed description of the invention
At present, a lot of rings add man-hour, are set on mandrel by ring blank, and the bracing frame supporting ring blank is fixed on lathe bed, and after blank reaming to certain size, blank can not continue reaming；And some blank needs carry out in processing or need more mold exchange to be processed just to complete processing, need to change to other rolling ring equipment blank, or reinstall new mould by after the mould release in rolling ring.Owing to bracing frame is fixed, it is impossible to on-demand adjustment bracing frame, relative to the distance between mandrel, is not easy to the installation of mould, and the installation of mould is restricted, and then the working range of ring rolls is caused to be extremely limited.
In consideration of it, designer of the present utility model devises a kind of ring rolls activity material supporting rack, this activity material supporting rack is simple and reasonable, it is simple to processing and manufacturing, easy to use；Simultaneously, after blank reaming, when needing to be further processed, by controlling the supporting part position relative to mandrel of support mechanism, it is possible to change the distance between mandrel and supporting part, on mandrel during sheathed mould, more convenient, and mould can not be installed on mandrel by oversize the causing not being used in mould, improve working (machining) efficiency, increase range.
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model rather than whole embodiments.Generally can with various different configurations arrange and design with the assembly of this utility model embodiment that illustrate described in accompanying drawing herein.Therefore, the detailed description to the embodiment of the present utility model provided in the accompanying drawings is not intended to limit claimed scope of the present utility model below, but is merely representative of selected embodiment of the present utility model.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
It should also be noted that similar label and letter represent similar terms in following accompanying drawing, therefore, the most a certain Xiang Yi accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
In description of the present utility model, it should be noted that, term " " center ", on " ", D score, " left ", " right ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this utility model product orientation usually put or position relationship when using, it is for only for ease of description this utility model and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Describe additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing, and it is not intended that indicate or hint relative importance.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " is arranged ", " installation ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, can also be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
Embodiment
Refer to Fig. 1-5, present embodiments provide a kind of ring rolls activity material supporting rack, for being arranged on the lathe bed of ring rolls, mandrel 100 is installed on described lathe bed, the lathe bed of ring rolls and the mandrel 100 being arranged on lathe bed are all prior art, and the mounting means of mandrel 100 and mounting structure use the installation of prior art, it is possible to meet the use demand of the movable material supporting rack of the present embodiment offer, in order to avoid narration repeats burden, it is not described in detail.Described movable material supporting rack includes two support mechanisms 200 being oppositely arranged, and described mandrel 100 is between said two support mechanism 200；Support mechanism 200 is mainly used in the blank 500 that support set is located on mandrel 100, and blank 500 adds man-hour, is first arranged on mandrel 100, then, drives blank 500 to rotate around mandrel 100 by the rotation of main shaft, it is achieved rolloff operation.In order to ensure that support mechanism 200 can be good at supporting blank 500, support mechanism 200 is set to two, two are oppositely arranged, be preferably arranged to, two support mechanisms 200 be positioned at the median plane of mandrel 100 both sides and be positioned at mandrel 100 same diametrically, easy for installation, location is convenient, evenly, blank 500 is not easily shifted, and position is more accurate for the stress of blank 500.
Obviously, the quantity of support mechanism 200 can also is that more than two, it is ensured that after support mechanism 200 is supported on blank 500, and blank 500 position is stably.
Described support mechanism 200 includes supporting part 101 and drives assembly 300, the outfan of described driving assembly 300 connects described supporting part 101, for driving described supporting part 101 to move back and forth along the radial direction of described mandrel 100 relative to described lathe bed, make described supporting part 101 near or away from described mandrel 100.Supporting part 101 plays the effect supporting blank 500, and two supporting parts 101 are oppositely arranged, the uniform force of blank 500, it is not susceptible to, it is safer that blank 500 adds man-hour, and supporting part 101 primarily serves the effect of support, and the planform of supporting part 101 can on-demand be arranged, obviously, in order to improve the structural integrity of supporting part 101 and be easy to the location of blank 500, supporting part 101 can be cube shape, has the many groups of smooth planes being oppositely arranged, easy for installation, location is convenient；Also allow for processing and manufacturing.
Man-hour is added carrying out blank 500, after blank 500 reaming, need further blank 500 to be carried out rolloff operation, the ring rolls of current ring processing includes that bracing frame, blank 500 are positioned by bracing frame, and bracing frame is to fix with lathe bed, or directly position blank 500 by lathe bed, bracing frame is stiff, and the distance between bracing frame and mandrel 100 is fixing, it is impossible to change.Blank 500 reaming is to after certain size, and blank 500 drops downwards automatically from mandrel 100, completes reaming；And blank 500 is when needing to be processed further, need installation mold 400 on mandrel 100 and on home roll, owing to the gap between bracing frame and mandrel 100 is fixed, when mould 400 is installed, mould 400 can not be arranged on the correct position of mandrel 100, and then it cannot be guaranteed that being processed further of blank 500.And the movable material supporting rack that the present embodiment provides, simple in construction, by controlling driving assembly 300 and then adjusting the distance between supporting part 101 and mandrel 100, and then meet the space of needs when mould 400 is installed, mould 400 is easily installed on mandrel 100, and then achieves processing of blank 500, easy to operate, quick, substantially increase production efficiency, add the range of ring rolls.
Obviously, assembly is driven to be used for providing power, the most reciprocating mechanism of supporting part 101 can be driven, simultaneously, select the power source of different capacity as required, it is ensured that the smooth of supporting part 101 moves, and is preferably arranged to, described driving assembly is hydraulic mechanism, supporting part 101 described in the outfan drive connection of described hydraulic mechanism.Hydraulic mechanism includes motor pump, is used for providing power, also includes oil cylinder and is positioned at in-oil cylinder piston rod, and hydraulic oil pump drives piston rod to move back and forth in oil cylinder, and piston rod connects supporting part, and then drives supporting part to move back and forth.Hydraulic mechanism is simple and reliable for structure, operates steadily, and during work, is difficult to break down, safe and reliable.
Supporting part 101 is used for being supported on bottom blank 500, play the effect of location, in the preferred version of this embodiment, described supporting part 101 includes load receiving part 102 and the connecting portion 103 being connected with described load receiving part 102, connecting portion 103 described in the outfan drive connection of described driving assembly 300, and supporting part 101 is easy to processing, by arranging connecting portion 103, it is easy to drive assembly to be connected with supporting part 101, more solid and reliable during connection, adjust convenient.The on-demand structure arranging load receiving part 102, it is not necessary to be cube shape by supporting part 101 whole installation, saves material, and meanwhile, in order to improve the structural integrity of supporting part 101, load receiving part 102 is one-body molded with connecting portion 103.The outfan drive connection connecting portion 103 of hydraulic mechanism, it is simple to the installation of driving means, more reliable and more stable during driving.
In the preferred version of this embodiment, described support mechanism 200 also includes bearing plate 104, described bearing plate 104 is positioned at the top of described load receiving part 102, and described bearing plate 104 removably connects with described load receiving part 102, blank 500 is in the course of processing, and there will be the situation of abrasion between supporting part 101, and bearing plate 104 is set on supporting part 101, the intensity of bearing plate 104, wearability are more preferable, during use, the most easy to wear, and be easy to after abrasion keep in repair bearing plate 104 dismounting, provide cost savings.The wearability of bearing plate 104 is high, it is not necessary to is made by the material that whole supporting part 101 uses wearability high, saves material, reduce difficulty of processing.The structure of bearing plate 104 is on-demand to be designed, and bearing plate 104 can be fitted on load receiving part 102, and bearing plate 104 is fixed with load receiving part 102 and is connected, and preferably drives the blank 500 being positioned on bearing plate 104 to move in supporting part 101 moving process.
In the preferred version of this embodiment, described bearing plate 104 is connected by inclined-plane with described load receiving part 102, inclined-plane on described load receiving part 102 by the top of described load receiving part 102 near the position of described mandrel 100 bottom of oblique described load receiving part 102 away from the position of described mandrel 100, after blank 500 is placed on bearing plate 104, the action of gravity of blank 500 is on bearing plate 104, due to ramp structure, after gravity passes to supporting part 101 along inclined-plane, the power that the tail end of supporting part 101 is subject to is bigger, tail end along supporting part 101 passes to lathe, the bearing capacity of whole support mechanism 200 is strong, it is hardly damaged, ensure that the safety in the course of processing.The tail end of supporting part 101 is one end away from mandrel 100 of supporting part 101, and power is preferably passed to lathe by supporting part 101, and total stress is more preferable.
In the preferred version of this embodiment, described bearing plate 104 is connected by concaveconvex structure with described load receiving part 102, described concaveconvex structure lays respectively on the inclined-plane of described bearing plate 104 and the inclined-plane of described load receiving part 102, concaveconvex structure has certain position-limiting action, after bearing plate 104 is installed on supporting part 101, due under the action of gravity of blank 500, bearing plate 104 easily moves along inclined-plane, and by arranging concaveconvex structure, bearing plate 104 is big with the contact area of supporting part 101, adding frictional force, bearing plate 104 is not easily shifted, and overall structure is more solid and reliable.
In the preferred version of this embodiment, described concaveconvex structure is set to groove 201 and the projection 202 matched, described groove 201 is positioned on the inclined-plane of described bearing plate 104, described projection 202 is positioned on the inclined-plane of described load receiving part 102, groove 201 and the simple in construction of projection 202, being easy to processing, matching relationship is good.
In the preferred version of this embodiment, described groove 201 extends along the radial direction of described mandrel 100, corresponding, described projection 202 extends along the radial direction of described mandrel 100, and after blank 500 is placed on bearing plate 104, projection 202 and groove 201 have the effect of the guiding of power, blank 500 is acted on projection 202 and preferably passes to lathe with the power on groove 201, power between bearing plate 104 and load receiving part 102 is more single, and overall stability under loading is reliable, uses safety.
In the preferred version of this embodiment, also include bracing frame 203, support frame as described above 203 is fixedly installed in described lathe bed, described supporting part 101 is slidably connected to support frame as described above 203, supporting part 101 slides relative to bracing frame 203, and the slip of supporting part 101 is convenient, and supporting part 101 cooperates with bracing frame 203, easier for installation, run more reliable and more stable.In relative movement, occur during the situations such as abrasion, being easy to maintenance.
In the preferred version of this embodiment, support frame as described above 203 has chute, described supporting part 101 is provided with the slide block matched with described chute, described slide block is positioned at described chute, described slide block can slide along the bearing of trend of described chute relative to described chute, make described supporting part 101 near or away from described mandrel 100.Using the fit structure of chute and slide block, supporting part 101 easy for installation, location is convenient, and in sliding process, running precision is higher, moves back and forth and is difficult to position deviation occur.Being preferably arranged to, chute is rectangular channel, and the cross section being perpendicular to length direction of chute is U-shaped, corresponding, slide block is rectangle, it is simple to processing, the groove 201 of rectangle coordinates with the slide block of rectangle, has certain guide effect, slides convenient.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (10)
1. a ring rolls activity material supporting rack, is arranged on the lathe bed of ring rolls, and described lathe bed is provided with mandrel, it is characterised in that including two support mechanisms being oppositely arranged, described mandrel is between said two support mechanism；
Described support mechanism includes supporting part and drives assembly, the outfan of described driving assembly connects described supporting part, for driving described supporting part to move back and forth along the radial direction of described mandrel relative to described lathe bed, make described supporting part near or away from described mandrel.
Ring rolls activity material supporting rack the most according to claim 1, it is characterised in that described supporting part includes load receiving part and the connecting portion being connected with described load receiving part, connecting portion described in the outfan drive connection of described driving assembly.
Ring rolls activity material supporting rack the most according to claim 2, it is characterised in that described support mechanism also includes that bearing plate, described bearing plate are positioned at the top of described load receiving part, and described bearing plate removably connects with described load receiving part.
Ring rolls activity material supporting rack the most according to claim 3, it is characterized in that, described bearing plate is connected by inclined-plane with described load receiving part, the inclined-plane on described load receiving part by the top of described load receiving part near the position of described mandrel the bottom of oblique described load receiving part away from the position of described mandrel.
Ring rolls activity material supporting rack the most according to claim 4, it is characterised in that described bearing plate is connected by concaveconvex structure with described load receiving part, described concaveconvex structure lays respectively on the inclined-plane of described bearing plate and the inclined-plane of described load receiving part.
Ring rolls activity material supporting rack the most according to claim 5, it is characterised in that described concaveconvex structure is set to groove and the projection matched, described groove is positioned on the inclined-plane of described bearing plate, and described projection is positioned on the inclined-plane of described load receiving part.
Ring rolls activity material supporting rack the most according to claim 6, it is characterised in that described groove extends along the radial direction of described mandrel, corresponding, described projection extends along the radial direction of described mandrel.
Ring rolls activity material supporting rack the most according to claim 1, it is characterised in that described driving assembly is hydraulic mechanism, supporting part described in the outfan drive connection of described hydraulic mechanism.
Ring rolls activity material supporting rack the most according to claim 8, it is characterised in that also include bracing frame, support frame as described above is fixedly installed in described lathe bed, and described supporting part is slidably connected to support frame as described above.
Ring rolls activity material supporting rack the most according to claim 9, it is characterized in that, support frame as described above has chute, described supporting part is provided with the slide block matched with described chute, described slide block is positioned at described chute, described slide block can relative to described chute along described chute bearing of trend slide, make described supporting part near or away from described mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045112.3U CN205496469U (en) | 2016-01-18 | 2016-01-18 | Work or material rest is held in palm in ring rolls activity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045112.3U CN205496469U (en) | 2016-01-18 | 2016-01-18 | Work or material rest is held in palm in ring rolls activity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205496469U true CN205496469U (en) | 2016-08-24 |
Family
ID=56721920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620045112.3U Withdrawn - After Issue CN205496469U (en) | 2016-01-18 | 2016-01-18 | Work or material rest is held in palm in ring rolls activity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205496469U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522081A (en) * | 2016-01-18 | 2016-04-27 | 山西双环重型机械有限公司 | Movable supporting frame of ring rolling mill |
| CN107716812A (en) * | 2017-09-14 | 2018-02-23 | 马鞍山市广源法兰环件有限公司 | It is spacing to beat the large-scale ring rolls of type |
| CN107774847A (en) * | 2017-09-14 | 2018-03-09 | 马鞍山市广源法兰环件有限公司 | Large-scale ring rolls double roller extrusion forming device |
-
2016
- 2016-01-18 CN CN201620045112.3U patent/CN205496469U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522081A (en) * | 2016-01-18 | 2016-04-27 | 山西双环重型机械有限公司 | Movable supporting frame of ring rolling mill |
| CN107716812A (en) * | 2017-09-14 | 2018-02-23 | 马鞍山市广源法兰环件有限公司 | It is spacing to beat the large-scale ring rolls of type |
| CN107774847A (en) * | 2017-09-14 | 2018-03-09 | 马鞍山市广源法兰环件有限公司 | Large-scale ring rolls double roller extrusion forming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20180727 |