CN107116145B - Cone cylinder molding die - Google Patents
Cone cylinder molding die Download PDFInfo
- Publication number
- CN107116145B CN107116145B CN201710508008.2A CN201710508008A CN107116145B CN 107116145 B CN107116145 B CN 107116145B CN 201710508008 A CN201710508008 A CN 201710508008A CN 107116145 B CN107116145 B CN 107116145B
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- CN
- China
- Prior art keywords
- cone cylinder
- internal model
- external mold
- model column
- shaping external
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
-
- 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
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
Abstract
The invention discloses a kind of cone cylinder molding dies, it include: the internal model column being vertically arranged, the first shaping external mold and the second shaping external mold for sandwiching for closing up internal model column, first shaping external mold and the second shaping external mold are opened and closed around vertical dead axle to be arranged, and first shaping external mold and the second shaping external mold close up when sandwiching internal model column, the molding ring cavity for forming cone cylinder is constituted between the outer ring surface of internal model column and the first shaping external mold and the second shaping external mold.It is also installed with Forming press on internal model column, to prevent fan-shaped material from removing molding ring cavity for supporting during fan-shaped material is shaped to cone cylinder with the top camber line of sector material to limit to fan-shaped material along the axial displacement of internal model column.In the present invention, it can greatly shorten the process time of part, improve the shaping efficiency of part, the quality of part is stablized after molding, and surface quality significantly improves, and the circularity of part is good, primary to hand over inspection qualification rate high, forming parts process is easy to operate, low to the skill requirement of operator.
Description
Technical field
The present invention relates to cone cylinder forming fields, particularly, are related to a kind of cone cylinder molding die.
Background technique
Burner inner liner is a critical component of engine, for carrying out air-fuel mixture and burning.Flame tube head annulus
Material is GH1140, GH3044 respectively, material thickness t1.5, and it is respectively φ 105, φ that 10 both ends diameter of cone cylinder is required after edge rolling
49, height 90, as shown in attached drawing Fig. 1.
Currently, existing furling plate round machine specification is larger in the market, for rolling up the circle and taper cone barrel 10 of φ 320-6000mm, due to
The diameter of the cone cylinder 10 of flame tube head is smaller, is not suitable for furling plate round machine existing in the market.In the prior art, it is beaten using manual
Molding method forms the cone cylinder 10 of the flame tube head, that is, fully relies on pincers worker and use simple percussion tool such as wooden mallet,
Expect to carry out to beat bending by hand to sector to form.Process-cycle length, large labor intensity, processing efficiency is low, molding rear conical-tube 10
Surface quality is difficult to ensure, and higher to processor's skill requirement, these seriously affect the processing progress and product of part
It delivers.
Summary of the invention
The present invention provides a kind of cone cylinder molding die, with solve to beat by hand the process-cycle existing for forming method it is long,
Large labor intensity, processing efficiency is low, molding rear conical-tube surface quality is difficult to ensure and to the higher technology of processor's skill requirement
Problem.
The technical solution adopted by the invention is as follows:
A kind of cone cylinder molding die, for the fan-shaped material volume circle of fan-shaped plate to be shaped to cone cylinder, cone cylinder molding die packet
It includes: the internal model column that is vertically arranged, the first shaping external mold and the second shaping external mold that internal model column is sandwiched for closing up, the first molding
External mold and the second shaping external mold are opened and closed around vertical dead axle to be arranged, and the first shaping external mold and the second shaping external mold close up double team internal model
The forming ring for forming cone cylinder is constituted when column, between the outer ring surface of internal model column and the first shaping external mold and the second shaping external mold
Chamber；It is also installed with Forming press on internal model column, for top camber line during fan-shaped material is shaped to cone cylinder with sector material
It supports to be limited to fan-shaped material along the axial displacement of internal model column, prevents fan-shaped material from removing molding ring cavity.
Further, the bottom end of Forming press is equipped with the Archimedian screw arc according to spiral of Archimedes machine-shaping
Face, Archimedian screw cambered surface extend spirally upwards along the axis direction of internal model column, for being shaped to cone cylinder in sector material
It contacts, makes with the Impact direction of top camber line contact position always along in sector material forming process with the top camber line of sector material in the process
It is formed by the direction of female diameter.
Further, Forming press is in open column shape structure, is fixed in the outer circle of internal model column；Forming press includes
Cylindrical section and the spiral section for being connected to cylindrical section bottom end, the bottom face of spiral section are Archimedian screw cambered surface.
Further, internal model column include be vertically arranged for the first shaping external mold and the second shaping external mold cooperate at
The profiled section of type cone cylinder, the top of profiled section are fixedly connected with the construction section for installation forming briquetting, the fixed dress of Forming press
In the outer circle of construction section；Profiled section is in matched pyramidal with the inner cone of cone cylinder circle；Construction section be in in Forming press
Cylindrical hole matches cylindric.
Further, cone cylinder molding die further includes the pressing plate for compressing Forming press downwards, and is used for locking pressure plate
Locking member；Pressing plate is set to the top of internal model column and supports with Forming press；Locking member protrudes into internal model column after passing through pressing plate
Pressing plate and internal model column to be fixed.
Further, cone cylinder molding die further includes the installation axle being vertically arranged；First shaping external mold and the second molding are outer
Mould is rotated and is installed in installation axle, and the axis open and close movement of opposite installation axle.
Further, the first shaping external mold includes the first outer mold piece, and the first outer mold piece is connected with the first connection sleeve；Second
Shaping external mold includes the second outer mold piece, and the second outer mold piece is connected with the second connection sleeve；First outer mold piece and the second outer mold piece with
Internal model column cooperates to form cone cylinder；First connection sleeve and second connection sleeve rotate respectively be installed in installation axle and first company
Female connector cylinder is located at the top of the second connection sleeve.
Further, the first outer mold piece is equipped with the first forming tank, and the second outer mold piece is equipped with the second forming tank；First at
Type groove and the second forming tank constitute the molding cavity for forming the external annulus of cone cylinder, and molding cavity and internal model column constitute forming ring
Chamber.
Further, the first outer mold piece and the second external mold block structure are identical；Use is also connected on the side wall of first outer mold piece
In the first drive rod for driving its rotation；The second driving for driving it to rotate is also connected on the side wall of second outer mold piece
Bar.
Further, cone cylinder molding die further includes horizontally disposed mounting plate；Internal model column and installation axle are fixedly connected on
On mounting plate.
The invention has the following advantages:
When sector material being shaped to cone cylinder using cone cylinder molding die of the invention, first by sector material slant setting in interior
Between mould column and the first shaping external mold and the second shaping external mold, the first shaping external mold and the second shaping external mold are then rotated so that two
Person's relative motion is to close up, and sector material is during the first shaping external mold and the second shaping external mold are closed up relatively around internal model column edge rolling
With molding, sector is expected in forming process, will be along the axis of internal model column under the action of the first shaping external mold and the second shaping external mold
To movement, by the way that Forming press is arranged, with to fan-shaped material along internal model axis of a cylinder to displacement limit, to prevent fan-shaped material from moving
Ring cavity is formed out, finally uses auxiliary tool by cone cylinder cross-stitch side welding fabrication.It compared to the prior art by hand will be fan-shaped
Material volume, which is justified, is shaped to cone cylinder, in the present invention, forms fan-shaped material volume circle by cone cylinder molding die, can greatly shorten part
Process time, improve the shaping efficiency of part.The quality of part is stablized after molding, and surface quality significantly improves, the circle of part
It spends, it is primary to hand over inspection qualification rate high.Forming parts process is easy to operate, low to the skill requirement of operator, and then pole can be obtained
Big popularization uses.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic cross-sectional view of cone cylinder to be formed；
Fig. 2 is the overlooking structure diagram when cone cylinder molding die of the preferred embodiment of the present invention all opens；
Fig. 3 is the first section view schematic view of the front view of Fig. 2；
Fig. 4 is the second section view schematic view of the front view of Fig. 2；
Fig. 5 is the schematic view of the front view of Forming press in Fig. 4；
Fig. 6 is structural schematic diagram when Fig. 2 middle conical tube molding die is all closed.
Marginal data
10, cone cylinder；20, internal model column；21, profiled section；22, construction section；30, the first shaping external mold；31, the first outer mold piece；
310, the first forming tank；32, the first connection sleeve；33, the first drive rod；40, the second shaping external mold；41, the second outer mold piece；
410, the second forming tank；42, the second connection sleeve；43, the second drive rod；50, Forming press；51, cylindrical section；52, spiral section；
501, Archimedian screw cambered surface；60, pressing plate；70, locking member；80, installation axle；90, mounting plate.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Referring to Fig.1, Fig. 2, Fig. 4 and Fig. 6, the preferred embodiment of the present invention provide a kind of cone cylinder molding die, and being used for will
The fan-shaped material volume circle of fan-shaped plate is shaped to cone cylinder 10, and cone cylinder molding die includes: the internal model column 20 being vertically arranged, for closing up
To sandwich the first shaping external mold 30 and the second shaping external mold 40 of internal model column 20, the first shaping external mold 30 and the second shaping external mold 40
Around vertical dead axle open and close be arranged, and the first shaping external mold 30 and the second shaping external mold 40 close up sandwich internal model column 20 when, internal model column
The molding ring cavity for forming cone cylinder 10 is constituted between 20 outer ring surface and the first shaping external mold 30 and the second shaping external mold 40.It is interior
Forming press 50 is also installed on mould column 20, for top camber line during fan-shaped material is shaped to cone cylinder 10 with sector material
It supports to be limited to fan-shaped material along the axial displacement of internal model column 20, prevents fan-shaped material from removing molding ring cavity.Using the present invention
Cone cylinder molding die by sector material be shaped to cone cylinder 10 when, first by sector material slant setting in internal model column 20 with first molding
Between external mold 30 and the second shaping external mold 40, the first shaping external mold 30 and the second shaping external mold 40 are then rotated so that the two is opposite
Movement is to close up, and sector material is during the first shaping external mold 30 and the second shaping external mold 40 are closed up relatively around 20 edge rolling of internal model column
With molding, sector is expected in forming process, will be along internal model column under the action of the first shaping external mold 30 and the second shaping external mold 40
20 axial movement, by the way that Forming press 50 is arranged, to be limited to fan-shaped material along the axial displacement of internal model column 20, thus anti-
Only fan-shaped material removes molding ring cavity, finally uses auxiliary tool by 10 cross-stitch side welding fabrication of cone cylinder.Compared with prior art
Fan-shaped material volume is justified in middle craft is shaped to cone cylinder, in the present invention, is formed fan-shaped material volume circle by cone cylinder molding die, can pole
The earth shortens the process time of part, improves the shaping efficiency of part.The quality of part is stablized after molding, and surface quality significantly mentions
The circularity of height, part is good, primary to hand over inspection qualification rate high.Forming parts process is easy to operate, low to the skill requirement of operator, into
And greatly popularization can be obtained, use.
Preferably, it will move up along the axial direction of internal model column 20 and supported with Forming press 50 in fan-shaped material forming process, and by
It is cambered surface in the top surface of sector material, generates crimping to prevent top surface and the interference of Forming press 50 in fan-shaped material forming process, this
In preferred embodiment, as shown in figure 5, the bottom end of Forming press 50 is equipped with the A Ji meter according to spiral of Archimedes machine-shaping
Moral spiral cambered surface 501, Archimedian screw cambered surface 501 extend spirally upwards along the axis direction of internal model column 20, for fanning
Shape material is shaped to contact with the top camber line of sector material during cone cylinder 10, makes and the Impact direction of top camber line contact position edge always
The direction of female diameter formed in fan-shaped material forming process, thus when preventing the fan-shaped top surface expected and Forming press 50 from supporting not
Generate crimping.
In the embodiment of the present invention, as shown in figure 5, Forming press 50 is in open column shape structure, it is fixed at internal model column 20
Outer circle on.Forming press 50 includes cylindrical section 51 and the spiral section 52 for being connected to 51 bottom end of cylindrical section, the bottom end of spiral section 52
Face is Archimedian screw cambered surface 501.
Optionally, as shown in figure 4, internal model column 20 includes being vertically arranged for forming with the first shaping external mold 30 and second
External mold 40 cooperates to form the profiled section 21 of cone cylinder 10, and the top of profiled section 21 is fixedly connected with for installation forming briquetting 50
Construction section 22, Forming press 50 are fixed in the outer circle of construction section 22.Profiled section 21 is in match with the inner cone of cone cylinder 10 circle
It is pyramidal.Construction section 22 matches cylindric in the interior cylindrical hole with Forming press 50.
Optionally, to prevent Forming press 50 from moving up under the counter-active effect of sector material along internal model column 20, in the present invention, such as
Shown in Fig. 4, cone cylinder molding die further includes the pressing plate 60 for compressing Forming press 50 downwards, and the lock for locking pressure plate 60
Tight part 70.Pressing plate 60 is set to the top of internal model column 20 and supports with Forming press 50.Locking member 70 protrudes into after passing through pressing plate 60
With pressing plate 60 and internal model column 20 is fixed in internal model column 20.In the specific embodiment of the invention, locking member 70 is lock-screw.
Optionally, as shown in figure 4, cone cylinder molding die further includes the installation axle 80 being vertically arranged.First shaping external mold 30
It rotates and is installed in installation axle 80 with the second shaping external mold 40, and the axis open and close movement of opposite installation axle 80.
In the embodiment of the present invention, as shown in Figure 3 and Figure 4, the first shaping external mold 30 includes the first outer mold piece 31, the first external mold
Block 31 is connected with the first connection sleeve 32.Second shaping external mold 40 includes the second outer mold piece 41, and the second outer mold piece 41 is connected with the
Two connection sleeves 42.First outer mold piece 31 and the second outer mold piece 41 cooperate with internal model column 20 to form cone cylinder 10.First connector sleeve
Cylinder 32 and second connection sleeve 42 rotate respectively be installed in installation axle 80 and first connection sleeve 32 be located at second connect sleeve
42 top.
In the embodiment of the present invention, as shown in figure 3, the first outer mold piece 31 is equipped with the first forming tank 310, the second outer mold piece 41
It is equipped with the second forming tank 410.First forming tank 310 and the second forming tank 410 constitute the external annulus for forming cone cylinder 10
Molding cavity, molding cavity and internal model column 20 constitute molding ring cavity.Preferably, as shown in figure 3, the structure of the first forming tank 310
Identical as the structure of the second forming tank 410, i.e. the first forming tank 310 and the second forming tank 410 are equivalent to by molding cavity along axis
Double of line direction subdivision forms.In other embodiments, the structure of both the first forming tank 310 and second forming tank 410 can be with
Difference, only need to enclose molding cavity made of setting as the first forming tank 310 and the second forming tank 410 can be used for molding cone cylinder 10
External annulus, and the molding cavity and internal model column 20 constitute molding ring cavity.
In this specific embodiment, as shown in figure 3, the first outer mold piece 31 is identical with 41 structure of the second outer mold piece.First external mold
The first drive rod 33 for driving it to rotate is also connected on the side wall of block 31.It is also connected on the side wall of second outer mold piece 41
The second drive rod 43 for driving it to rotate.
Optionally, as shown in figure 3, cone cylinder molding die further includes horizontally disposed mounting plate 90.Internal model column 20 and installation
Axis 80 is fixedly connected on mounting plate 90.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of cone cylinder molding die, which is characterized in that for the fan-shaped material volume circle of fan-shaped plate to be shaped to cone cylinder (10), institute
Stating cone cylinder molding die includes:
The internal model column (20) that is vertically arranged, the first shaping external mold (30) and second that the internal model column (20) is sandwiched for closing up
Shaping external mold (40), first shaping external mold (30) and second shaping external mold (40) are opened and closed around vertical dead axle to be arranged, and
When first shaping external mold (30) and second shaping external mold (40) close up double team internal model column (20), the internal model column
(20) it is constituted between outer ring surface and first shaping external mold (30) and second shaping external mold (40) described for forming
The molding ring cavity of cone cylinder (10)；
Forming press (50) are also installed on the internal model column (20), for being shaped to the cone cylinder (10) in the fan-shaped material
During support with the top camber line of the fan-shaped material to be carried out to the fan-shaped material along the axial displacement of the internal model column (20)
Limit prevents the fan-shaped material from removing the molding ring cavity；
The bottom end of the Forming press (50) is equipped with the Archimedian screw cambered surface according to spiral of Archimedes machine-shaping
(501), the Archimedian screw cambered surface (501) extends spirally upwards along the axis direction of the internal model column (20), to be used for
It contacts, makes and the top camber line with the top camber line of the fan-shaped material during the fan-shaped material is shaped to the cone cylinder (10)
The Impact direction of contact position is always along the direction of female diameter formed in the fan-shaped material forming process.
2. cone cylinder molding die according to claim 1, which is characterized in that
The Forming press (50) is in open column shape structure, is fixed in the outer circle of the internal model column (20)；
The Forming press (50) includes cylindrical section (51) and the spiral section (52) for being connected to the cylindrical section (51) bottom end, described
The bottom face of spiral section (52) is the Archimedian screw cambered surface (501).
3. cone cylinder molding die according to claim 1, which is characterized in that
The internal model column (20) include be vertically arranged be used for and first shaping external mold (30) and second shaping external mold
(40) cooperate to form the profiled section (21) of the cone cylinder (10), the top of the profiled section (21) is fixedly connected with for installing
The construction section (22) of the Forming press (50), the Forming press (50) are fixed at the outer circle of the construction section (22)
On；
The profiled section (21) is in matched pyramidal with the inner cone of the cone cylinder (10) circle；
The construction section (22) matches cylindric in the interior cylindrical hole with the Forming press (50).
4. cone cylinder molding die according to claim 1, which is characterized in that
The cone cylinder molding die further includes the pressing plate (60) for compressing the Forming press (50) downwards, and for locking
State the locking member (70) of pressing plate (60)；
The pressing plate (60) is set to the top of the internal model column (20) and supports with the Forming press (50)；
The locking member (70), which passes through, to be protruded into after the pressing plate (60) in the internal model column (20) with by the pressing plate (60) and institute
It is fixed to state internal model column (20).
5. cone cylinder molding die according to claim 1, which is characterized in that
The cone cylinder molding die further includes the installation axle (80) being vertically arranged；
First shaping external mold (30) and second shaping external mold (40), which rotate, to be installed on the installation axle (80), and
The axis open and close movement of the relatively described installation axle (80).
6. cone cylinder molding die according to claim 5, which is characterized in that
First shaping external mold (30) includes the first outer mold piece (31), and first outer mold piece (31) is connected with the first connector sleeve
Cylinder (32)；
Second shaping external mold (40) includes the second outer mold piece (41), and second outer mold piece (41) is connected with the second connector sleeve
Cylinder (42)；
First outer mold piece (31) and second outer mold piece (41) and the internal model column (20) cooperate to form the cone cylinder
(10)；
Rotation is installed on the installation axle (80) respectively for first connection sleeve (32) and second connection sleeve (42)
And first connection sleeve (32) is located at the top of second connection sleeve (42).
7. cone cylinder molding die according to claim 6, which is characterized in that
First outer mold piece (31) is equipped with the first forming tank (310), and second outer mold piece (41) is equipped with the second molding
Slot (410)；
First forming tank (310) and second forming tank (410) constitute the external annulus for forming the cone cylinder (10)
Molding cavity, the molding cavity and the internal model column (20) constitute the molding ring cavity.
8. cone cylinder molding die according to claim 6, which is characterized in that
First outer mold piece (31) is identical with the second outer mold piece (41) structure；
The first drive rod (33) for driving it to rotate is also connected on the side wall of first outer mold piece (31)；
The second drive rod (43) for driving it to rotate is also connected on the side wall of second outer mold piece (41).
9. cone cylinder molding die according to claim 5, which is characterized in that
The cone cylinder molding die further includes horizontally disposed mounting plate (90)；
The internal model column (20) and the installation axle (80) are fixedly connected on the mounting plate (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508008.2A CN107116145B (en) | 2017-06-28 | 2017-06-28 | Cone cylinder molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508008.2A CN107116145B (en) | 2017-06-28 | 2017-06-28 | Cone cylinder molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107116145A CN107116145A (en) | 2017-09-01 |
| CN107116145B true CN107116145B (en) | 2019-02-15 |
Family
ID=59720026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508008.2A Active CN107116145B (en) | 2017-06-28 | 2017-06-28 | Cone cylinder molding die |
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| Country | Link |
|---|---|
| CN (1) | CN107116145B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6289711B1 (en) * | 1995-03-25 | 2001-09-18 | Krauss-Maffei Ag | Method and device for rounding bushings |
| US6494360B1 (en) * | 1998-06-23 | 2002-12-17 | Thyssen Krupp Stahl Ag | Method and device for producing straight bead welded pipes from flat sheet metal blanks |
| CN101065197A (en) * | 2004-09-24 | 2007-10-31 | 蒂森克虏伯钢铁股份公司 | Method and device for production of a longitudinal seam welded hollow profile |
| CN202479392U (en) * | 2011-12-19 | 2012-10-10 | 陕西宝成航空仪表有限责任公司 | Conical barrel-shaped sheet metal part moulding device |
| CN204817591U (en) * | 2015-08-19 | 2015-12-02 | 山东致远建材有限公司 | Pole steel ring butt joint former |
-
2017
- 2017-06-28 CN CN201710508008.2A patent/CN107116145B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6289711B1 (en) * | 1995-03-25 | 2001-09-18 | Krauss-Maffei Ag | Method and device for rounding bushings |
| US6494360B1 (en) * | 1998-06-23 | 2002-12-17 | Thyssen Krupp Stahl Ag | Method and device for producing straight bead welded pipes from flat sheet metal blanks |
| CN101065197A (en) * | 2004-09-24 | 2007-10-31 | 蒂森克虏伯钢铁股份公司 | Method and device for production of a longitudinal seam welded hollow profile |
| CN202479392U (en) * | 2011-12-19 | 2012-10-10 | 陕西宝成航空仪表有限责任公司 | Conical barrel-shaped sheet metal part moulding device |
| CN204817591U (en) * | 2015-08-19 | 2015-12-02 | 山东致远建材有限公司 | Pole steel ring butt joint former |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107116145A (en) | 2017-09-01 |
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