CN210547532U - Welded pipe necking die - Google Patents

Welded pipe necking die Download PDF

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Publication number
CN210547532U
CN210547532U CN201921529246.2U CN201921529246U CN210547532U CN 210547532 U CN210547532 U CN 210547532U CN 201921529246 U CN201921529246 U CN 201921529246U CN 210547532 U CN210547532 U CN 210547532U
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CN
China
Prior art keywords
connecting rod
necking
whole
components
welded tube
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Active
Application number
CN201921529246.2U
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Chinese (zh)
Inventor
周荣
唐存辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Weifu Lida Catalytic Converter Co Ltd
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Wuxi Weifu Lida Catalytic Converter Co Ltd
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Priority to CN201921529246.2U priority Critical patent/CN210547532U/en
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Publication of CN210547532U publication Critical patent/CN210547532U/en
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Abstract

The utility model relates to a welded tube class throat mould, including the connecting rod, the locating plate is connected to connecting rod one side, and the inner core is connected to the connecting rod opposite side, and the connecting rod periphery sets up the components of a whole that can function independently external mold, and the components of a whole that can function independently external mold is the components of a whole that can function independently structure, and key sliding connection locating plate is passed through to components of a whole that can function independently external mold one side, and components of a whole that. The utility model has simple structure, solves the problem of indent generated when the existing thin welded pipe is contracted, and improves the processing qualification rate of the thin-wall welded pipe; and the processing precision of the thin-wall welded pipe orifice is improved.

Description

Welded pipe necking die
Technical Field
The utility model belongs to the technical field of welded tube processing equipment, a welded tube class throat mould is related to.
Background
In the production process of the thin-wall pipe fitting of the automobile exhaust system, the welding seam of the thin-wall welded pipe is concave when the opening is reduced, the pipe is scrapped, and the enterprise cost is increased.
Disclosure of Invention
An object of the utility model is to provide a welded tube class throat mould produces the problem of indent when solving current thin welded tube throat, improves thin wall welded tube processing qualification rate
According to the utility model provides a technical scheme: the utility model provides a welded tube class throat mould, includes the connecting rod, locating plate is connected to connecting rod one side, the inner core is connected to the connecting rod opposite side, the connecting rod periphery sets up the components of a whole that can function independently external mold, the components of a whole that can function independently external mold is the components of a whole that can function independently structure, key sliding connection locating plate is passed through to components of a whole that can function independently external mold one side, components of a whole that can function independently external mold one side periphery sets.
As a further improvement of the utility model, connecting rod one side threaded connection the locating plate, connecting rod opposite side threaded connection the inner core.
As a further improvement, the split outer mold is provided with a sliding key groove, one end of the key is fixedly connected to the positioning plate, and the other end of the key is slidably arranged in the sliding key groove.
As a further improvement, the internal circumference one end of components of a whole that can function independently external mold sets up the throat inclined plane, profile is decided for the throat to throat inclined plane one side, components of a whole that can function independently external mold one side periphery is the adduction inclined plane, set up the external mold taper sleeve on the adduction inclined plane.
As a further improvement, the components of a whole that can function independently external mold opposite side periphery sets up spacing recess, external mold apron lower part is spacing boss, spacing boss is located in the spacing recess.
As a further improvement of the utility model, the periphery of the inner core is a shrink-proof surface.
As a further improvement of the utility model, the necking inclined plane is arc-shaped.
As a further improvement of the utility model, the die change handle is installed outside the outer die cover plate.
Compared with the prior art, the utility model, have following advantage:
the utility model has simple structure, solves the problem of indent generated when the existing thin welded pipe is contracted, and improves the processing qualification rate of the thin-wall welded pipe; and the processing precision of the thin-wall welded pipe orifice is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the split external mold of the present invention.
Fig. 3 is a schematic structural diagram of the inner core of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
In the figure 1, the external mold taper sleeve comprises an external mold taper sleeve 1, a split external mold 2, a sliding key groove 2-1, a necking inclined plane 2-2, a necking fixed surface 2-3, an inward necking inclined plane 2-4, a limiting groove 2-5, an inner core 3, an anti-necking surface 3-1, a connecting rod 4, a positioning plate 5, a mold changing handle 6, an external mold cover plate 7, a pipe 8, a key 9 and the like.
As shown in fig. 1, the utility model relates to a welded tube class throat mould, including connecting rod 4, connecting rod 4 one side threaded connection locating plate 5, 4 opposite side threaded connection inner cores of connecting rod 3, the 4 peripheries of connecting rod set up components of a whole that can function independently external mold 2, and components of a whole that can function independently external mold 2 is the components of a whole that can function independently structure. One side of the split outer die 2 is connected with the positioning plate 5 in a sliding mode through a key 9, a sliding key groove 2-1 is formed in the split outer die 2, one end of the key 9 is fixedly connected into the positioning plate 5, and the other end of the key 9 is arranged in the sliding key groove 2-1 in a sliding mode. The outer die taper sleeve 1 is arranged on the periphery of one side of the split outer die 2, the outer die cover plate 7 is arranged on the periphery of the other side of the split outer die 2, and the outer die cover plate 7 is fixedly connected with the positioning plate 5 and used for limiting the split outer die 2 and preventing the split outer die 2 from being over-stretched.
One end of the inner periphery of the split outer mold 2 is provided with a necking inclined plane 2-2, the necking inclined plane 2-2 is a transition surface with a large diameter and a small diameter of a pipe orifice, one side of the necking inclined plane 2-2 is a necking fixed surface 2-3, and the necking fixed surface 2-3 is a fixed surface after the pipe orifice is reduced from large to small. The periphery of one side of the split external mold 2 is provided with an inward-contraction inclined surface 2-4. The inner contraction inclined plane 2-4 is provided with an outer mold taper sleeve 1. The inner periphery of the outer mold taper sleeve 1 is provided with an inclined plane matched with the inward contraction inclined plane 2-4.
And the periphery of the other side of the split outer mold 2 is provided with a limiting groove 2-5, the lower part of the outer mold cover plate 7 is provided with a limiting boss, and the limiting boss is positioned in the limiting groove 2-5 and used for limiting the axial and radial movement of the split outer mold 2.
The periphery of the inner core 3 is provided with a shrink-proof face 3-1.
The necking inclined plane 2-2 is arc-shaped.
And a die change handle 6 is arranged on the outer side of the outer die cover plate 7, so that the die (inner core) is convenient to change.
The working process of the utility model is as follows:
the end part of the pipe 8 needing necking is placed on the periphery of the inner core 3, equipment (a sizing mill produced by Shanghai building precision machinery company) is started, the outer mold taper sleeve 1 moves leftwards, the split outer mold 2 contracts, the periphery of the end opening of the pipe 8 is compressed by the necking inclined plane 2-2 and the necking fixed surface 2-3, and the inner periphery abuts against the necking prevention surface 3-1 to complete necking. The necking-prevention surface 3-1 ensures that the pipe cannot be deformed inwards in the necking process.

Claims (8)

1. The utility model provides a welded tube class throat mould which characterized in that: the mould includes connecting rod (4), locating plate (5) is connected to connecting rod (4) one side, inner core (3) is connected to connecting rod (4) opposite side, connecting rod (4) periphery sets up components of a whole that can function independently external mold (2), components of a whole that can function independently external mold (2) are the components of a whole that can function independently structure, key (9) sliding connection locating plate (5) are passed through to components of a whole that can function independently external mold (2) one side periphery sets up external mold taper sleeve (1), and the opposite side periphery sets up external mold apron (7).
2. A welded tube necking die according to claim 1, wherein: one side of the connecting rod (4) is in threaded connection with the positioning plate (5), and the other side of the connecting rod (4) is in threaded connection with the inner core (3).
3. A welded tube necking die according to claim 1, wherein: a sliding key groove (2-1) is formed in the split outer die (2), one end of the key (9) is fixedly connected into the positioning plate (5), and the other end of the key (9) is slidably arranged in the sliding key groove (2-1).
4. A welded tube necking die according to claim 1, wherein: one end of the inner periphery of the split outer mold (2) is provided with a necking inclined plane (2-2), one side of the necking inclined plane (2-2) is provided with a necking fixed surface (2-3), the outer periphery of one side of the split outer mold (2) is provided with an adduction inclined plane (2-4), and the adduction inclined plane (2-4) is provided with an outer mold taper sleeve (1).
5. A welded tube necking die according to claim 4, wherein: and the periphery of the other side of the split outer mold (2) is provided with a limiting groove (2-5), the lower part of the outer mold cover plate (7) is provided with a limiting boss, and the limiting boss is positioned in the limiting groove (2-5).
6. A welded tube necking die according to claim 1, wherein: the periphery of the inner core (3) is provided with an anti-necking surface (3-1).
7. A welded tube necking die according to claim 4, wherein: the necking inclined plane (2-2) is arc-shaped.
8. A welded tube necking die according to claim 1, wherein: and a die change handle (6) is arranged on the outer side of the outer die cover plate (7).
CN201921529246.2U 2019-09-12 2019-09-12 Welded pipe necking die Active CN210547532U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921529246.2U CN210547532U (en) 2019-09-12 2019-09-12 Welded pipe necking die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921529246.2U CN210547532U (en) 2019-09-12 2019-09-12 Welded pipe necking die

Publications (1)

Publication Number Publication Date
CN210547532U true CN210547532U (en) 2020-05-19

Family

ID=70669403

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921529246.2U Active CN210547532U (en) 2019-09-12 2019-09-12 Welded pipe necking die

Country Status (1)

Country Link
CN (1) CN210547532U (en)

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