CN110202077A - Cold extrusion combined type undergauge bar connecting apparatus and connection method - Google Patents
Cold extrusion combined type undergauge bar connecting apparatus and connection method Download PDFInfo
- Publication number
- CN110202077A CN110202077A CN201910642530.9A CN201910642530A CN110202077A CN 110202077 A CN110202077 A CN 110202077A CN 201910642530 A CN201910642530 A CN 201910642530A CN 110202077 A CN110202077 A CN 110202077A
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- Prior art keywords
- workpiece
- reinforcing bar
- connection
- inner sleeve
- extrusion
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
- B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
- B21F15/06—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire with additional connecting elements or material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
- B21F27/20—Making special types or portions of network by methods or means specially adapted therefor of plaster-carrying network
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention provides cold extrusion combined type undergauge bar connecting apparatus and connection methods, are related to reinforcing bar connection area, including bracket, compression assemblies and connection workpiece；Reinforcing bar fixed structure is provided on bracket, compression assemblies are rack-mount, connection workpiece is placed on the second extrusion tooling, first extrusion tooling, the second extrusion tooling are provided with the through-hole passed through for reinforcing bar, connect the hollow structure that workpiece is both ends open, the inner wall of connection workpiece is provided with internal screw thread: the first extrusion tooling and the second extrusion tooling are cooperated by pressurizing unit is press-connected workpiece, connects and is provided with balanced structure in the middle part of workpiece.The present invention squeezes the both ends of connection workpiece using compression assemblies and connection work pieces mate, since there is internal screw thread in the inside of connection workpiece, workpiece is connected in compression process, internal screw thread is more prominent, so that the rib in length and breadth of internal screw thread and reinforcing bar is mutually twisted to reach connection purpose.Meanwhile using this kind of connecting method for reinforcing bars, operation is can be completed in 1-2 people, dramatically saves manpower and material resources.
Description
Technical field
The invention belongs to reinforcing bar connection areas, and in particular to a kind of cold extrusion combined type undergauge bar connecting apparatus and connection
Method.
Background technique
In the construction process, it usually needs making in site pile foundation steel bar cage connects multiple steel reinforcement cages to form symbol
Close the pile foundation steel bar cage of length requirement.But due to the limitation of extrusion equipment, the connection of steel reinforcement cage mostly use by between root reinforcing bar into
Capable monomer connection is then wound multi-turn steel wire outside reinforcing bar and is connected and fixed with this.
Traditional cold extrusion sleeve is radially connected radially to be squeezed by extruder by sleeve is connected, and sleeve is deformed,
It is mutually twisted with the rib in length and breadth of reinforcing bar, reaches connection purpose.But when carrying out reinforcing bar connection work, it usually needs 2-3 auxiliary
The person of helping others helps inner sleeve and housing to hold, then is attached the extruding of sleeve, and otherwise, what housing can not be successfully covers in inner sleeve, this
Kind need of work causes entire working efficiency to reduce, and wastes human resources, also there is certain damage to personal safety.
Summary of the invention
The present invention provides a kind of cold extrusion combined type undergauge bar connecting apparatus, with solve connection steel reinforcement cage inefficiency,
The problem of occupying manpower.
In a first aspect, the present invention provides cold extrusion combined type undergauge bar connecting apparatus, including bracket, compression assemblies and company
Connect workpiece；Reinforcing bar fixed structure is provided on the bracket, the compression assemblies are rack-mount, and the compression assemblies include
First extrusion tooling, the second extrusion tooling and pressurizing unit；The connection workpiece is placed on the second extrusion tooling, and described first
Extrusion tooling, the second extrusion tooling are provided with the through-hole passed through for reinforcing bar, and the connection workpiece is the hollow knot of both ends open
The inner wall of structure, the connection workpiece is provided with internal screw thread: first extrusion tooling and the second extrusion tooling pass through pressurizing unit
Cooperation is press-connected workpiece, is provided with balanced structure in the middle part of the connection workpiece.
Further, excessive deformation after being squeezed in order to avoid connection workpiece, influences the connection effect of reinforcing bar, the company
Connecing workpiece includes jacket and inner sleeve, and the jacket and inner sleeve is hollow structure, and the coat suit is described in the outside of inner sleeve
It is provided with internal screw thread on the inner wall of inner sleeve, the deformation direction of inner sleeve is limited by the way that housing is arranged, is suffering connection workpiece
After being squeezed, inner sleeve mainly carries out deformation inwardly, engages internal screw thread with reinforcing bar, to be connected and fixed two reinforcing bars.
Further, in order to which the position for treating two reinforcing bars of connection is determined, the balanced structure includes screw rod, institute
The aperture that position cooperation is provided in the middle part of jacket and inner sleeve is stated, the aperture is connected to the hollow structure of inner sleeve, and screw rod passes through
Aperture extends into the hollow structure of inner sleeve.When in use, reinforcing bar is passed through into connection workpiece until contacting spiral shell by operator
Until bar, determines that the tie point of two reinforcing bars is located at the middle part of connection workpiece with this, make to be connected two-part of steel reinforcement cage
The join domain position of reinforcing bar is relatively fixed, and ensure that the bonding strength of reinforcing bar and steel reinforcement cage, the specification phase for connecting reinforcing bar
To stabilization；Simultaneously because the cooperation of screw rod and aperture, due to when in use, wherein one end of a reinforcing bar is fixed on bracket,
Other end socket connection workpiece, end are resisted against on screw rod, keep the position for connecting workpiece relatively fixed, another reinforcing bar is passed through company
One end of workpiece is connect also against on screw rod, therefore, the position of two reinforcing bars and connection workpiece is relatively fixed, is not required to operator
It helps manually, in use, operator only needs installation, mobile connection workpiece and squeezes connection workpiece,
Dramatically save manpower.
Further, connection workpiece is squeezed for convenience, the connection workpiece includes positioning sleeve, the positioning sleeve
Middle part is provided with the through-hole passed through for reinforcing bar, and the positioning sleeve and sleeve thread cooperate, and it is separate that the positioning sleeve is mounted on housing
One end of second extrusion tooling.
Further, in order to which the position to inner sleeve is fixed, guarantee that internal screw thread squeezes reinforcing bar when inner sleeve deformation, it is described outer
It covers and the side of the second extrusion tooling is provided with step, described inner sleeve one end is resisted against on step, the other end of the inner sleeve
It is resisted against on positioning sleeve, the outer wall of the inner sleeve is bonded with the inner wall of housing.
Further, in order to avoid the position of connection workpiece shifts, the through-hole and housing of second extrusion tooling
Dimensional fits, the connection workpiece is placed in through-hole.
Further, connection workpiece is squeezed for convenience, the compression assemblies include the first pressing arm and second
Pressing arm, the pressurizing unit are hydraulic cylinder, and first extrusion tooling is mounted in the first pressing arm, and described second squeezes
Tooling is mounted in the second pressing arm, the piston rod connection of first pressing arm and hydraulic cylinder.
The beneficial effect of this kind of bar connecting apparatus is, is carried out reinforcing bar by reinforcing bar fixed structure by setting bracket
It is preliminary fixed, then connection workpiece is socketed in outside reinforcing bar, so that two reinforcing bars is carried out preliminary connection, compression assemblies pass through extruding
Connection workpiece engages the internal screw thread for connecting workpiece with reinforcing bar, realizes the connection of two reinforcing bars.
Additionally due to the axis direction setting balanced structure at the middle part of connection workpiece can treat connection when in use
The position of two reinforcing bars is determined, and is made length relative equilibrium of two reinforcing bars in connection workpiece, is guaranteed that the connection of reinforcing bar is strong
Degree, and due to the setting of balanced structure, the specification of reinforcing bar connection is relatively stable, the company of steel reinforcement cage two-part reinforcing bar to be connected
It connects that regional location is relatively fixed, and ensure that the bonding strength of reinforcing bar and steel reinforcement cage, improve the efficiency of connection steel reinforcement cage, and set
It sets after balanced structure and to be carried out without operator hand steered, effectively save manpower.
Second aspect, the present invention provide a kind of cold extrusion combined type undergauge connecting method for reinforcing bars, and step specifically includes that
1) the first reinforcing bar is fixed on bracket, connection workpiece is sleeved on one end of the first reinforcing bar；
2) the second reinforcing bar is accessed from connection workpiece far from one end of the first reinforcing bar；
3) workpiece will be connected to drag to the direction close to the second reinforcing bar, makes the first reinforcing bar and the second reinforcing bar in connection workpiece
Length it is balanced；
4) it is press-connected workpiece by compression assemblies, the internal screw thread for connecting workpiece is made to be embedded in the first reinforcing bar and the second reinforcing bar.
Further, reinforcing bar is positioned for convenience, guarantees reinforcing bar connection effect and reinforced steel bar strength, liberation manpower,
In step 2), before the second reinforcing bar accesses connection workpiece, screw rod is passed through from the through-hole of inner sleeve and housing, extends into screw rod
In the hollow structure of inner sleeve.
This kind of connecting method for reinforcing bars beneficial effect is, using compression assemblies and connection work pieces mate to the two of connection workpiece
End is squeezed, and since there is internal screw thread in the inside of connection workpiece, connects workpiece in compression process, internal screw thread is more prominent, makes
The rib in length and breadth for obtaining internal screw thread and reinforcing bar is mutually twisted to reach connection purpose.
Meanwhile using this kind of connecting method for reinforcing bars, operation is can be completed in 1-2 people, dramatically saves manpower and material resources.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the second face will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, for those of ordinary skill in the art
For, in the premise second not made the creative labor, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of cold extrusion combined type undergauge bar connecting apparatus of the present invention.
Fig. 2 is reinforcing bar connection schematic diagram of the present invention.
Fig. 3 is present invention connection Workpiece structure schematic diagram.
In figure, the 1, first pressing arm, 2, oil cylinder, the 3, second pressing arm, 4, reinforcing bar, the 5, second extrusion tooling, 6, connection work
Part, the 7, first extrusion tooling, 8, housing, 9, inner sleeve, 10, positioning sleeve.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, the second face will be in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff is not making the every other embodiment obtained of creative work premise second, and the present invention all should belong to
The range of protection.
Embodiment 1
A kind of connection of reinforcing bar 4 equipment, as shown in Figure 1, including bracket, compression assemblies and connection workpiece 6；It is set on the bracket
It is equipped with reinforcing bar fixed structure, the compression assemblies are rack-mount, and the compression assemblies include the first extrusion tooling 7, second
Extrusion tooling 5 and pressurizing unit；The connection workpiece 6 is placed on the second extrusion tooling 5, first extrusion tooling 7, second
Extrusion tooling 5 is provided with the through-hole passed through for reinforcing bar 4, and the connection workpiece 6 is the hollow structure of both ends open, the connection
The inner wall of workpiece 6 is provided with internal screw thread: first extrusion tooling 7 and the second extrusion tooling 5 are squeezed by pressurizing unit cooperation
Workpiece 6 is connected, the middle part of the connection workpiece 6 is provided with balanced structure.
In order to avoid the position of connection workpiece 6 shifts, preferably, the through-hole of second extrusion tooling 5 and outer
The dimensional fits of set 8, the connection workpiece 6 are placed in through-hole.
Connection workpiece 6 is squeezed for convenience, preferably, the compression assemblies include the first pressing arm 1 and the
Two pressing arms 3, the pressurizing unit are hydraulic cylinder 2, and first extrusion tooling 7 is mounted in the first pressing arm 1, described the
Two extrusion toolings 5 are mounted in the second pressing arm 3, and first pressing arm 1 is connect with the piston rod of hydraulic cylinder 2.
The beneficial effect of the present embodiment is, by setting bracket that reinforcing bar 4 is tentatively solid by the progress of reinforcing bar fixed structure
It is fixed, then connection workpiece 6 is socketed in outside reinforcing bar 4, two reinforcing bars 4 is made to carry out preliminary connection, compression assemblies pass through the company of extruding
Connecing workpiece 6 engages the internal screw thread for connecting workpiece 6 with reinforcing bar 4, realizes the connection of two reinforcing bars 4.
Additionally due to the axis direction setting balanced structure at the middle part of connection workpiece 6 can treat connection when in use
The position of two reinforcing bars 4 is determined, and is made length relative equilibrium of two reinforcing bars 4 in connection workpiece 6, is guaranteed the company of reinforcing bar 4
Intensity is connect, and due to the setting of balanced structure, the specification that reinforcing bar 4 connects is relatively stable, 4 cage of reinforcing bar two-part steel to be connected
The join domain position of muscle 4 is relatively fixed, and ensure that the bonding strength of 4 cage of reinforcing bar 4 and reinforcing bar, improves connection 4 cage of reinforcing bar
Efficiency, and be arranged balanced structure after without operator carry out it is hand steered, effectively save manpower.
Embodiment 2
It improves on the basis of embodiment 1, excessive deformation after being squeezed in order to avoid connection workpiece 6 influences steel
The connection effect of muscle 4, the connection workpiece 6 include housing 8 and inner sleeve 9, and the housing 8 and inner sleeve 9 are hollow structure, described
Housing 8 is sleeved on the outside of inner sleeve 9, is provided with internal screw thread on the inner wall of the inner sleeve 9, the change by setting housing 8 to inner sleeve 9
Shape direction is limited, and makes to connect workpiece 6 after being squeezed, inner sleeve 9 mainly carries out deformation inwardly, makes internal screw thread and reinforcing bar 4
Engaged, to be connected and fixed two reinforcing bars 4.
Specifically, the balanced structure includes screw rod, the middle part of the housing 8 and inner sleeve 9 is provided with opening for position cooperation
Hole, the aperture are connected to the hollow structure of inner sleeve 9, and screw rod passes through aperture and extends into the hollow structure of inner sleeve 9.It is using
When, reinforcing bar 4 is passed through until contacting screw rod by operator into connection workpiece 6, and the connection of two reinforcing bars 4 is determined with this
Point is located at the middle part of connection workpiece 6, and the join domain position for the two-part reinforcing bar 4 for keeping 4 cage of reinforcing bar to be connected is relatively fixed, and
The bonding strength that ensure that 4 cage of reinforcing bar 4 and reinforcing bar, the specification for connecting reinforcing bar 4 are relatively stable；Simultaneously because screw rod and aperture
Cooperation, since when in use, wherein one end of a reinforcing bar 4 is fixed on bracket, other end socket connection workpiece 6, end is supported
It leans against on screw rod, keeps the position for connecting workpiece 6 relatively fixed, another reinforcing bar 4 is passed through one end of connection workpiece 6 also against spiral shell
On bar, therefore, the position of two reinforcing bars 4 and connection workpiece 6 is relatively fixed, is not required to operator and helps manually, in use process
In, operator only needs installation, mobile connection workpiece 6 and squeezes connection workpiece 6, dramatically saves manpower.
Embodiment 3
It improves on the basis of embodiment 2, further, connection workpiece 6 is squeezed for convenience, the company
Connecing workpiece 6 includes positioning sleeve 10, is provided with the through-hole passed through for reinforcing bar 4 in the middle part of the positioning sleeve 10, the positioning sleeve 10 with it is outer
Set 8 is threadedly engaged, and the positioning sleeve 10 is mounted on the one end of housing 8 far from the second extrusion tooling 5.
Further, in order to which the position to inner sleeve 9 is fixed, guarantee that internal screw thread squeezes reinforcing bar 4, institute when 9 deformation of inner sleeve
It states housing 8 and the side of second extrusion tooling 5 is provided with step, described 9 one end of inner sleeve is resisted against on step, the inner sleeve 9
The other end be resisted against on positioning sleeve 10, the outer wall of the inner sleeve 9 is bonded with the inner wall of housing 8.
Embodiment 4
On the basis of above embodiments, the present embodiment provides a kind of connecting method for reinforcing bars, step is specifically included that
1) the first reinforcing bar 4 is fixed on bracket, connection workpiece 6 is sleeved on one end of the first reinforcing bar 4；
2) the second reinforcing bar 4 is accessed from connection workpiece 6 far from one end of the first reinforcing bar 4；
3) workpiece 6 will be connected to drag to the direction close to the second reinforcing bar 4, makes the first reinforcing bar 4 and the second reinforcing bar 4 in connection work
Length in part 6 is balanced；
4) it is press-connected workpiece 6 by compression assemblies, the internal screw thread for connecting workpiece 6 is made to be embedded in the first reinforcing bar 4 and the second steel
Muscle 4.
Further, reinforcing bar 4 is positioned for convenience, guarantees 4 connection effect of reinforcing bar and reinforcing bar semi-finals degree, liberation people
Power before the second reinforcing bar 4 accesses connection workpiece 6, screw rod is passed through from inner sleeve 9 and the through-hole of housing 8, makes spiral shell in step 2)
Bar extends into the hollow structure of inner sleeve 9.
This kind of 4 connection method beneficial effect of reinforcing bar is, using compression assemblies and the cooperation of connection workpiece 6 to connection workpiece
Both ends are squeezed, and since there is internal screw thread in the inside of connection workpiece 6, connect workpiece 6 in compression process, internal screw thread is more prominent
Out, so that internal screw thread and reinforcing bar 4 are mutually twisted to reach connection purpose.
Meanwhile using this kind of 4 connection method of reinforcing bar, 1-2 people can be completed operation, dramatically save manpower and material resources.
Although by reference to attached drawing and combining the mode of preferred embodiment to the present invention have been described in detail, the present invention
It is not limited to this.In the premise second for not departing from spirit and substance of the present invention, those of ordinary skill in the art can be to this hair
Bright embodiment carries out various equivalent modifications or substitutions, and these modifications or substitutions all should in covering scope of the invention/
Anyone skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, all
It is covered by the protection scope of the present invention.Therefore, protection scope of the present invention is answered described with scope of protection of the claims
Subject to.
Claims (9)
1. cold extrusion combined type undergauge bar connecting apparatus, it is characterised in that: including bracket, compression assemblies and connection workpiece (6)；
Reinforcing bar fixed structure is provided on the bracket, the compression assemblies are rack-mount, and the compression assemblies include the
One extrusion tooling (7), the second extrusion tooling (5) and pressurizing unit；
The connection workpiece (6) is placed on the second extrusion tooling (5), first extrusion tooling (7), the second extrusion tooling
(5) it is provided with the through-hole passed through for reinforcing bar (4), connection workpiece (6) is the hollow structure of both ends open, the connection work
The inner wall of part (6) is provided with internal screw thread:
First extrusion tooling (7) and the second extrusion tooling (5) are cooperated by pressurizing unit is press-connected workpiece (6)；It is described
Balanced structure is provided in the middle part of connection workpiece (6).
2. cold extrusion combined type undergauge bar connecting apparatus as described in claim 1, it is characterised in that: the connection workpiece
It (6) include housing (8) and inner sleeve (9), the housing (8) and inner sleeve (9) are hollow structure, and the housing (8) is sleeved on interior
The outside of (9) is covered, is provided with internal screw thread on the inner wall of the inner sleeve (9).
3. cold extrusion combined type undergauge bar connecting apparatus as claimed in claim 2, it is characterised in that: the balanced structure packet
Screw rod is included, the aperture of position cooperation is provided in the middle part of the housing (8) and inner sleeve (9), the aperture is hollow with inner sleeve (9)
Fabric connectivity, the screw rod pass through aperture and extend into the hollow structure of inner sleeve (9).
4. the cold extrusion combined type undergauge bar connecting apparatus as described in claims 1 to 3 is any, it is characterised in that: the company
Connecing workpiece (6) includes positioning sleeve (10), is provided with the through-hole passed through for reinforcing bar (4), the positioning in the middle part of the positioning sleeve (10)
Set (10) is threadedly engaged with housing (8), and the positioning sleeve (10) is mounted on the one end of housing (8) far from the second extrusion tooling (5).
5. cold extrusion combined type undergauge bar connecting apparatus as claimed in claim 4, it is characterised in that: the housing (8) is leaned on
The side of nearly second extrusion tooling (5) is provided with step, and described inner sleeve (9) one end is resisted against on step, the inner sleeve (9) it is another
One end is resisted against on positioning sleeve (10), and the outer wall of the inner sleeve (9) is bonded with the inner wall of housing (8).
6. cold extrusion combined type undergauge bar connecting apparatus as claimed in claim 5, it is characterised in that: described second squeezes work
The through-hole of (5) and the dimensional fits of housing (8) are filled, the connection workpiece (6) is placed in through-hole.
7. cold extrusion combined type undergauge bar connecting apparatus as described in claim 1, it is characterised in that: the compression assemblies packet
The first pressing arm (1) and the second pressing arm (3) are included, the pressurizing unit is hydraulic cylinder (2), first extrusion tooling (7)
It is mounted on the first pressing arm (1), second extrusion tooling (5) is mounted on the second pressing arm (3), first pressing arm
(1) it is connect with the piston rod of hydraulic cylinder (2).
8. cold extrusion combined type undergauge connecting method for reinforcing bars, step specifically include that
1) the first reinforcing bar (4) is fixed on bracket, connection workpiece (6) is sleeved on one end of the first reinforcing bar (4)；
2) the second reinforcing bar (4) is accessed from connection workpiece (6) far from the one end of the first reinforcing bar (4)；
3) workpiece (6) will be connected to drag to the direction close to the second reinforcing bar (4), makes the first reinforcing bar (4) and the second reinforcing bar (4) even
The length connect in workpiece (6) is balanced；
4) workpiece (6) are press-connected by compression assemblies, make the internal screw thread insertion the first reinforcing bar (4) and second for connecting workpiece (6)
Reinforcing bar (4).
9. cold extrusion combined type undergauge connecting method for reinforcing bars as claimed in claim 8, it is characterised in that: in step 2),
Before second reinforcing bar (4) access connection workpiece (6), screw rod is passed through from inner sleeve (9) and the through-hole of housing (8), extends into screw rod
In the hollow structure of inner sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642530.9A CN110202077A (en) | 2019-07-16 | 2019-07-16 | Cold extrusion combined type undergauge bar connecting apparatus and connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642530.9A CN110202077A (en) | 2019-07-16 | 2019-07-16 | Cold extrusion combined type undergauge bar connecting apparatus and connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110202077A true CN110202077A (en) | 2019-09-06 |
Family
ID=67797561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910642530.9A Pending CN110202077A (en) | 2019-07-16 | 2019-07-16 | Cold extrusion combined type undergauge bar connecting apparatus and connection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110202077A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863677A (en) * | 2021-09-17 | 2021-12-31 | 柳州欧维姆机械股份有限公司 | Axial extrusion device for steel bar extrusion sleeve and axial extrusion method thereof |
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| US5937521A (en) * | 1997-05-23 | 1999-08-17 | Seaward International, Inc. | Method of making extruded plastic members |
| KR20150102877A (en) * | 2014-03-01 | 2015-09-09 | 기언관 | Reinforcing rod a coupling device for hooped reinforcement |
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| CN113863677A (en) * | 2021-09-17 | 2021-12-31 | 柳州欧维姆机械股份有限公司 | Axial extrusion device for steel bar extrusion sleeve and axial extrusion method thereof |
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Application publication date: 20190906 |