CN109500086A - Piercing mandrel plug replaces device and method - Google Patents
Piercing mandrel plug replaces device and method Download PDFInfo
- Publication number
- CN109500086A CN109500086A CN201811640350.9A CN201811640350A CN109500086A CN 109500086 A CN109500086 A CN 109500086A CN 201811640350 A CN201811640350 A CN 201811640350A CN 109500086 A CN109500086 A CN 109500086A
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- China
- Prior art keywords
- cabinet
- fixed frame
- chain
- supporting element
- mandril
- 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.)
- Granted
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/06—Interchanging mandrels, fixing plugs on mandrel rods or cooling during interchanging mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Assembled Shelves (AREA)
Abstract
The invention discloses a kind of piercing mandrel plugs to replace device and method, which includes: cabinet, supporting element, fixed frame, holds part.Mandril entrance is provided on cabinet.The upper end of cabinet is arranged in supporting element, is used to support fixed frame.The top of fixed frame is removably disposed on supporting element, and lower part is located in the box body.The bottom that fixed frame is arranged in part is held, for holding top, is overlapped the center line of top with the center line of mandril.For the present invention when replacing top, not only not cumbersome height, angle adjust process, but also structure is simple, convenient for operation, while improving working efficiency, reduce the labor intensity of staff.
Description
Technical field
The present invention relates to machinery equipment field more particularly to a kind of piercing mandrel plug to replace device and method.
Background technique
Perforation is the first procedure in seamless steel tube production, will be solid by the top in punch in this procedure
Blank pierces into hollow hollow billet, and comes directly towards and need to be replaced after completing hollow billet perforation each time, i.e., by mandril and top point
From, and recombine.But in the composition that the two combines, often will appear the center line of top not with the center line of mandril
It is overlapped, the problem that the two combines rear locking not in place, this is easy for causing occurring coming directly towards when carrying out subsequent perforation process de-
The phenomenon that falling, can not continuing operation not only affects operating efficiency in this way, while also will increase manufacturing cost.Therefore it provides one
The top more changing device that kind can be such that the center line of top is not aligned with the center line of mandril is very necessary.
The prior art provides a kind of top more changing device, as shown in Fig. 1, the device include: cabinet 1, supporting element 2,
Fixed frame 3, guide part 6.Wherein, mandril entrance is provided on cabinet 1.The upper end of cabinet 1 is arranged in supporting element 2, is used to support
Fixed frame 3.Fixed frame 3 can be arranged in up or down on the supporting element 2, and the lower part of fixed frame 3 is located at the cabinet 1
Interior, bottom is placed with top.Guide part 6 is arranged below fixed frame 3, for pushing top, makes to come directly towards run-off the straight.It is inciting somebody to action
Before mandril insertion top, fixed frame 3 is needed to move up and down, and driving guide part 6 works, and tilts top, to ensure to come directly towards
Center line be overlapped with the center line of mandril, and then complete top and dock locking with mandril.
Inventor has found that the prior art has the following problems:
The prior art is after more finishing changing top, it is also necessary to the angle that mobile fixed frame 3, the driving adjustment of guide part 6 come directly towards, with
It is overlapped the center line of top with the center line of mandril, adjustment process is cumbersome, and adjustment mechanism is complicated, reduces working efficiency, increases
The labor intensity of staff is added.
Summary of the invention
On the one hand, the embodiment of the present invention provides a kind of piercing mandrel plug more changing device, to improve working efficiency, reduces work
Make the labor intensity of personnel, which includes:
Cabinet, fixed frame, holds part at supporting element；
Mandril entrance is provided on the cabinet；
The upper end of the cabinet is arranged in the supporting element, is used to support fixed frame；
The top of the fixed frame is removably disposed on the supporting element, and lower part is located in the cabinet；
The bottom for holding part and the fixed frame being arranged in makes the center line and mandril of top for holding top
Center line is overlapped.
Optionally, the supporting element is frame structure.
Optionally, the part that holds is V-arrangement plate body structure, and described one end for holding part tilts predetermined angle upwards.
Optionally, the bottom of the fixed frame is provided with for placing the mounting groove for holding part.
Optionally, the device further include: transmission mechanism is arranged on the cabinet, and is sequentially connected with the supporting element,
For driving the supporting element to move horizontally on the cabinet.
Optionally, the transmission mechanism includes: motor, chain, chain stays；
The motor is arranged on the cabinet, connect with the chain drive, for driving the chain movement；
The chain stays are sleeved on the chain, and are fixedly connected with the supporting element；
The top of the cabinet is arranged in the chain, for driving the chain stays to transport in the upper end level of the cabinet
It is dynamic.
Optionally, the chain stays include: the body portion being vertically connected with and shank portion and locating part；
Described matrix part is fixedly connected with the supporting element；
The shank portion is used for across the chain；
The locating part covers in the shank portion, is used for after the shank portion passes through the chain, to described
Chain is limited.
Optionally, the locating part includes limit plate and fastener；
The limit sleeve-board is in the shank portion below the chain；
The fastener is arranged in the shank portion, for offseting with the lower end of the limit plate.
Optionally, the transmission mechanism further include: the idler wheel of the supporting element lower end is set, for driving the support
Part rolls on the cabinet.
On the other hand, the embodiment of the invention provides replaced using above-mentioned piercing mandrel plug more changing device to top
Method, this method comprises:
Fixed frame self-supporting part is removed, and is taken out out of cabinet；
To on the fixed frame hold part and the top held on part is replaced；
Part is held described in more finishing changing and top is placed on the fixed frame, and the fixed frame is set back, and is made
The center line of top is overlapped with the center line for the mandril being inserted into；
Mandril is inserted into the mandril entrance of the cabinet, docks locking with the top more finished changing.
Piercing mandrel plug provided in an embodiment of the present invention more changing device by setting cabinet, supporting element and fixed frame, and makes
The top of fixed frame is removably disposed on supporting element, and lower part is located in the box body, and ensure that fixed frame can be according to operation need
It to be dismantled, be installed at any time.The bottom for holding part by setting, and part being held fixed frame is set, when needing replacing not
When the top of same specification, only original need to be held part taking-up, and be reentered into it is compatible with the top newly hold part, such as
This, ensure that under any circumstance, and the center line of top can be overlapped with the center line for the mandril being inserted into, and make top and mandril
Favorably accomplish docking locking.For the present invention when replacing top, not only not cumbersome height, angle adjust process, Er Qiejie
Structure is simple, convenient for operation, while improving working efficiency, reduces the labor intensity of staff.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is the structural schematic diagram for coming directly towards more changing device in the prior art；
Fig. 2 is the main view that middle punch of embodiment of the present invention machine comes directly towards more changing device；
Fig. 3 is the side view that middle punch of embodiment of the present invention machine comes directly towards more changing device；
Fig. 4 is the structural schematic diagram that part is held in the embodiment of the present invention；
Fig. 5 is a kind of main view of chain stays in the embodiment of the present invention；
Fig. 6 is a kind of side view of chain stays in the embodiment of the present invention；
Fig. 7 is the main view of another chain stays in the embodiment of the present invention.
Appended drawing reference is as follows:
1 cabinet,
2 supporting elements,
3 fixed frames,
4 hold part,
501 motors,
502 chains,
503 chain stays,
5031 body portions,
5032 shank portions,
5033 locating parts,
50331 limit plates,
50332 fasteners,
504 idler wheels
6 guide parts.
Specific embodiment
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, with reference to the accompanying drawing to this hair
Bright embodiment is described in further details.Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
On the one hand, the embodiment of the invention provides a kind of piercing mandrel plug more changing devices, should as shown in attached drawing 2 and attached drawing 3
Device includes: cabinet 1, supporting element 2, fixed frame 3, holds part 4.Mandril entrance is provided on cabinet 1.Supporting element 2 is arranged in case
The upper end of body 1 is used to support fixed frame 3.The top of fixed frame 3 is removably disposed on supporting element 2, and lower part is located at cabinet 1
It is interior.The bottom that fixed frame 3 is arranged in part 4 is held, for holding top, is overlapped the center line of top with the center line of mandril.
The working principle of piercing mandrel plug provided in an embodiment of the present invention more changing device is as described below:
When needing to replace top, 3 self-supporting part 2 of fixed frame is removed, and is taken out out of cabinet 1.To fixation
The top for holding part 4 He holding on part 4 on frame 3 is replaced, then, by more finish changing hold part 4 and top is placed on fixation
On frame 3, and fixed frame 3 is set back and (fixed frame 3 is relay on supporting element 2, and its underpart is made to be located at cabinet 1
It is interior), it is overlapped the center line of top with the center line for the mandril being inserted into.At this point, the mandril that mandril is inserted into cabinet 1 can be entered
Mouthful, locking is docked with the top more finished changing.
Piercing mandrel plug provided in an embodiment of the present invention more changing device, by the way that cabinet 1, supporting element 2 and fixed frame 3 is arranged,
And it is removably disposed in the top of fixed frame 3 on supporting element 2, lower part is located in cabinet 1, ensure that fixed frame 3 can root
It needs to be dismantled at any time according to operation, install.The bottom for holding part 4 by setting, and part 4 being held fixed frame 3 is set, when
It when needing replacing the top of different size, only original need to be held to part 4 takes out, and be reentered into and compatible with the top newly hold
Part 4, in this way, ensure that under any circumstance, the center line of top can be overlapped with the center line for the mandril being inserted into, and be made
Top and mandril favorably accomplish docking locking.When replacing top, not only not cumbersome height, angle adjusted the present invention
Journey, and structure is simple, convenient for operation, while improving working efficiency, reduces the labor intensity of staff.
In order to guarantee that 2 structure of supporting element is simple, while it can be realized the support to fixed frame 3, which can be frame
Body structure.Specifically, for example, it can be with rectangular box structure, square frame structure etc..
The detachable connection method of fixed frame 3 and supporting element 2 can there are many, for example:
As a kind of implementation, multiple grooves can be set on supporting element 2, be arranged on fixed frame 3 multiple and be somebody's turn to do
Fixed frame 3 when installation, need to only be placed on supporting element 2, be inserted into multiple convex blocks in multiple grooves by the compatible convex block of groove
?；When disassembly, fixed frame 3 only need to be above mentioned.
It should be noted that the mandril entrance of cabinet 1 is arranged on the side wall of cabinet 1, and mandril outlet then setting with
The wall box is with respect on the wall box of the other side, and the centerline of the two is in coincidence status.
Fixed frame 3 can be hollow frame structure, bottom is provided with for placing the bottom surface for holding part 4, and side is provided with
Baffle moving up and down for being limited to top.Specifically, it carries out docking lock with top in cabinet 1 when mandril enters
When only, which is moved down, and blocks mandril outlet；After locking is completed with mandril in top, baffle can be moved up,
Pass through top with mandril.Wherein, which can be V-arrangement baffle compatible with top, can have cylinder to be driven.
Further, in order to avoid top shakes on holding part 4, as shown in Fig. 4, it can will hold part 4 and set
It is set to V-arrangement plate body structure, and the one end for holding part 4 tilts predetermined angle upwards.
It can be easy to implement and hold part 4 in the installation or removal of 3 bottom of fixed frame, can be arranged in the bottom of fixed frame 3
Have for placing the mounting groove for holding part 4.When needs will hold part 4 and be fixed in fixed frame 3, it only need to will hold part 4 and be placed on
In the mounting groove, when requiring replacement, then it is taken out out of mounting groove.
Wherein, mounting groove and to hold the quantity of part can be multiple (such as 3,4).
Further, in embodiments of the present invention, device further include: transmission mechanism.The transmission mechanism is arranged in cabinet 1
On, and be sequentially connected with supporting element 2, for driving supporting element 2 to move horizontally on cabinet 1.
Multiple part 4 is held by so set, fixed frame 3 can be made, hold part 4 and move horizontally with supporting element 2, that is, realizing
On switching of the top on different station, keep operation more flexible, improve operating efficiency.
In order to successfully realize that supporting element 2 moves horizontally on cabinet 1, that is, realizes fixed frame 3, holds part 4, and hold
Moving horizontally for the top on part 4 is being held, as shown in attached drawing 2 and attached drawing 3, which includes: motor 501, chain
502, chain stays 503.Wherein, motor 501 is arranged on cabinet 1, is sequentially connected with chain 502, transports for drive chain 502
It is dynamic.Chain stays 503 are sleeved on chain 502, and are fixedly connected with supporting element 2.The top of cabinet 1 is arranged in chain 502, is used for
Drive chain stays 503 in the upper end horizontal movement of cabinet 1.
Further, as shown in attached drawing 5, attached drawing 6, attached drawing 7, which includes: the body portion being vertically connected with
5031 and shank portion 5032 and locating part 5033.Wherein, body portion 5031 is fixedly connected with supporting element 2.Shank portion
5032 for across chain 502.5033 sets of locating part in shank portion 5032, are used to pass through chain in shank portion 5032
After 502, chain 502 is limited.
Wherein, body portion 5031 can be a variety of, for example, it can be plate body structure, block structure etc..
Conventionally, as the shortcomings that chain conveyer is easy to wear and easy elongation, causes chain unavoidably to need frequently
The process of chain hinge pin is replaced in replacement in the prior art, time-consuming and laborious, significantly reduces the feasibility and production of replacement chain
The production efficiency of line.Therefore, by being as above arranged, the characteristics of traditional chain conveyer easy to wear and easy elongation is solved, chain 502 is not
It needs to frequently replace, reduces operating cost.
Wherein, shank portion 5032 is passed through the gap in a chain link of chain more than 502.
As shown in attached drawing 5, attached drawing 6, attached drawing 7, which includes limit plate 50331 and fastener 50332.Its
In, in 50331 sets of the limit plate shank portions 5032 below chain 502.Fastener 50332 is arranged in shank portion 5032
On, for offseting with the lower end of limit plate 50331.
Specifically, for example, bolt arrangement can be set by fastener 50332, as shown in attached drawing 5 and attached drawing 6,
Internal thread hole compatible with the bolt is set in shank portion 5032, in use, fastener 50332 need to be only screwed into the interior spiral shell
In pit.
Alternatively, as shown in Fig. 7, setting nut structure for fastener 50332, being set on the outer wall of shank portion 5032
Set external screw thread compatible with the nut, in use, fastener 50332 is tightened in shank portion 5032, make the upper end with
Chain 502 offsets.
In order to guarantee ride comfort that supporting element 2 moves on cabinet 1, as shown in Fig. 4, the transmission mechanism further include: set
The idler wheel 504 in 2 lower end of supporting element is set, for driving supporting element 2 to roll on cabinet 1.
On the other hand, the embodiment of the invention provides the method replaced using above-mentioned apparatus to top, this method packets
It includes:
3 self-supporting part 2 of fixed frame is removed, and is taken out out of cabinet 1.
Holding part 4 and holding the top on part 4 on fixed frame 3 is replaced.
By more finish changing hold part 4 and top is placed on fixed frame 3, and fixed frame 3 is set back, makes the center of top
Line is overlapped with the center line for the mandril being inserted into.
By the mandril entrance of mandril insertion cabinet 1, locking is docked with the top more finished changing.
It by using the above method, ensure that under any circumstance, the center line of top can be with the mandril being inserted into
Center line is overlapped, and top and mandril is made to favorably accomplish docking locking.The present invention is when replacing top, not only not cumbersome height
Degree, angle adjust process, and structure is simple, convenient for operation, while improving working efficiency, reduce the labor of staff
Fatigue resistance.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of piercing mandrel plug more changing device, comprising: cabinet (1), supporting element (2), fixed frame (3)；
Mandril entrance is provided on the cabinet (1)；
The supporting element (2) is arranged in the upper end of the cabinet (1), is used to support fixed frame (3)；
The top of the fixed frame (3) is removably disposed on the supporting element (2), and lower part is located in the cabinet (1)；
It is characterized in that, described device further includes holding part (4)；
It is described to hold part (4) setting in the bottom of the fixed frame (3), it is come directly towards for holding, makes the center line and mandril of top
Center line be overlapped.
2. piercing mandrel plug as described in claim 1 more changing device, which is characterized in that the supporting element (2) is frame structure.
3. piercing mandrel plug as described in claim 1 more changing device, which is characterized in that described hold part (4) are V shaped slab body knot
Structure, and described one end for holding part (4) tilts predetermined angle upwards.
4. piercing mandrel plug as described in claim 1 more changing device, which is characterized in that the bottom of the fixed frame (3) is arranged
Have for placing the mounting groove for holding part (4).
5. piercing mandrel plug as described in claim 1 more changing device, which is characterized in that further include: transmission mechanism is arranged in institute
It states on cabinet (1), and is sequentially connected with the supporting element (2), for driving the supporting element (2) water on the cabinet (1)
Translation is dynamic.
6. piercing mandrel plug as claimed in claim 5 more changing device, which is characterized in that the transmission mechanism includes: motor
(501), chain (502), chain stays (503)；
The motor (501) is arranged on the cabinet (1), is sequentially connected with the chain (502), for driving the chain
(502) it moves；
The chain stays (503) are sleeved on the chain (502), and are fixedly connected with the supporting element (2)；
The chain (502) is arranged on the top of the cabinet (1), for driving the chain stays (503) in the cabinet (1)
Upper end horizontal movement.
7. piercing mandrel plug as claimed in claim 6 more changing device, which is characterized in that the chain stays (503) include: up and down
The body portion (5031) and shank portion (5032) and locating part (5033) of connection；
Described matrix part (5031) is fixedly connected with the supporting element (2)；
The shank portion (5032) is used for across the chain (502)；
The locating part (5033) covers on the shank portion (5032), described for passing through in the shank portion (5032)
After chain (502), the chain (502) is limited.
8. piercing mandrel plug as claimed in claim 7 more changing device, which is characterized in that the locating part (5033) includes limit
Plate (50331) and fastener (50332)；
The limit plate (50331) covers in the shank portion (5032) below the chain (502)；
The fastener (50332) is arranged on the shank portion (5032), for the lower end with the limit plate (50331)
It offsets.
9. piercing mandrel plug as claimed in claim 6 more changing device, which is characterized in that the transmission mechanism further include: setting
Idler wheel (504) in the supporting element (2) lower end, for driving the supporting element (2) to roll on the cabinet (1).
10. the method replaced using the described in any item piercing mandrel plugs of claim 1-9 more changing device to top, special
Sign is, which comprises
Fixed frame (3) self-supporting part (2) is removed, and is taken out out of cabinet (1)；
To holding part (4) and described hold the top on part (4) and replace on the fixed frame (3)；
Part (4) is held described in more finishing changing and top is placed on the fixed frame (3), and the fixed frame (3) are restored former
Position is overlapped the center line of top with the center line for the mandril being inserted into；
Mandril is inserted into the mandril entrance of the cabinet (1), docks locking with the top more finished changing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640350.9A CN109500086B (en) | 2018-12-29 | Device and method for replacing punch head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640350.9A CN109500086B (en) | 2018-12-29 | Device and method for replacing punch head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109500086A true CN109500086A (en) | 2019-03-22 |
| CN109500086B CN109500086B (en) | 2024-05-17 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317541A (en) * | 2020-10-23 | 2021-02-05 | 太原科技大学 | Automatic assembling and disassembling device for offline rolled pipe top |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207635U (en) * | 1986-10-29 | 1987-12-05 | 冶金部重庆钢铁设计研究院 | Automatic replacing equipment of a conic tip of a automatic pipe rolling mill |
| CN1137426A (en) * | 1994-08-18 | 1996-12-11 | 曼内斯曼股份公司 | Interchanging mandrel device for core rod tube rolling mills |
| JPH11123413A (en) * | 1997-10-15 | 1999-05-11 | Sumitomo Metal Ind Ltd | Device for changing mandrel and plug of piercing mill and changing method therefor |
| JP2000317507A (en) * | 1999-05-14 | 2000-11-21 | Sumitomo Metal Ind Ltd | Device for automatically changing piercer plug |
| JP2004105985A (en) * | 2002-09-13 | 2004-04-08 | Ishikawajima Harima Heavy Ind Co Ltd | Roll changing device for hot-rolling mill |
| CN201079795Y (en) * | 2007-07-24 | 2008-07-02 | 太原市通泽成套设备有限公司 | Fast replacing device for plug |
| CN102962256A (en) * | 2012-12-03 | 2013-03-13 | 太原重工股份有限公司 | Mandrel trolley and mandrel replacing device |
| CN209318431U (en) * | 2018-12-29 | 2019-08-30 | 北京京诚之星科技开发有限公司 | Piercing mandrel plug more changing device |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207635U (en) * | 1986-10-29 | 1987-12-05 | 冶金部重庆钢铁设计研究院 | Automatic replacing equipment of a conic tip of a automatic pipe rolling mill |
| CN1137426A (en) * | 1994-08-18 | 1996-12-11 | 曼内斯曼股份公司 | Interchanging mandrel device for core rod tube rolling mills |
| JPH11123413A (en) * | 1997-10-15 | 1999-05-11 | Sumitomo Metal Ind Ltd | Device for changing mandrel and plug of piercing mill and changing method therefor |
| JP2000317507A (en) * | 1999-05-14 | 2000-11-21 | Sumitomo Metal Ind Ltd | Device for automatically changing piercer plug |
| JP2004105985A (en) * | 2002-09-13 | 2004-04-08 | Ishikawajima Harima Heavy Ind Co Ltd | Roll changing device for hot-rolling mill |
| CN201079795Y (en) * | 2007-07-24 | 2008-07-02 | 太原市通泽成套设备有限公司 | Fast replacing device for plug |
| CN102962256A (en) * | 2012-12-03 | 2013-03-13 | 太原重工股份有限公司 | Mandrel trolley and mandrel replacing device |
| CN209318431U (en) * | 2018-12-29 | 2019-08-30 | 北京京诚之星科技开发有限公司 | Piercing mandrel plug more changing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317541A (en) * | 2020-10-23 | 2021-02-05 | 太原科技大学 | Automatic assembling and disassembling device for offline rolled pipe top |
| CN112317541B (en) * | 2020-10-23 | 2022-08-05 | 太原科技大学 | Automatic assembling and disassembling device for offline rolled pipe top |
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