CN106077302A - A kind of on pipe fitting, process frock used for expansion joint - Google Patents
A kind of on pipe fitting, process frock used for expansion joint Download PDFInfo
- Publication number
- CN106077302A CN106077302A CN201610701892.7A CN201610701892A CN106077302A CN 106077302 A CN106077302 A CN 106077302A CN 201610701892 A CN201610701892 A CN 201610701892A CN 106077302 A CN106077302 A CN 106077302A
- Authority
- CN
- China
- Prior art keywords
- die
- pipe fitting
- expansion joint
- involutory
- expansion
- 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.)
- Pending
Links
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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses and a kind of on pipe fitting, process frock used for expansion joint; upper die and lower die including involutory use; forming tank is formed between upper die and lower die after involutory; it is provided with expansion slot in described forming tank; the monoblock type protection mould of band conical internal cavity it is set with outside upper die and lower die after involutory, bonded to each other in the conical surface between conical internal cavity wall and the outer wall of upper die and lower die of described monoblock type protection mould.The invention have the advantage that simple in construction, greatly facilitate the expansion molding of expansion joint on pipe fitting, reduce processing cost, improve production efficiency.
Description
The present invention relates to a kind of on pipe fitting, process frock used for expansion joint.
In order to meet the needs of mechanically Special use, it is often necessary to arrange expansion joint, conventional one side on pipe fitting
Method is by turnery processing, and the pipe fitting increasing wall thickness carries out overall turning, unwanted local turning is fallen, the ground of reservation
Side is formed for bulge shape expansion joint.But the method for this turnery processing need to strengthen the wall thickness of whole pipe fitting, the most not only wastes
Material, improves processing cost, and the position that expands, local is more difficult carries out turning, wastes time and energy, and production efficiency is low.
The problem that the present invention needs to solve: a kind of simple in construction is provided, expansion joint expansion on pipe fitting can be significantly facilitated
The a kind of of molding processes frock used for expansion joint on pipe fitting.
For solving the problems referred to above, the technical solution used in the present invention is: a kind of process frock used for expansion joint on pipe fitting,
Including the upper die and lower die of involutory use, involutory after upper die and lower die between form forming tank, described forming tank is arranged
Have an expansion slot, involutory after upper die and lower die outside be set with the monoblock type protection mould of band conical internal cavity, described monoblock type protection
Between conical internal cavity wall and the outer wall of upper die and lower die of mould bonded to each other in the conical surface.
Further, aforesaid expansion tube frock, wherein, described upper die and lower die are upper and lower Huff die.
The invention have the advantage that simple in construction, greatly facilitate the expansion molding of expansion joint on pipe fitting, reduce and be processed into
This, improve production efficiency.
Fig. 1 is a kind of structural representation processing frock used for expansion joint on pipe fitting of the present invention.
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
On pipe fitting, process frock used for expansion joint as it is shown in figure 1, a kind of, including involutory use upper Huff die 1 and under
Huff die 2, involutory after upper Huff die 1 and lower Huff die 2 between formed forming tank 3, described forming tank 3 arranges expansion slot
31, involutory after upper Huff die 1 and lower Huff die 2 outside be set with band conical internal cavity monoblock type protection mould 4, described monoblock type
Protect between conical internal cavity wall and the outer wall of upper Huff die 1 and lower Huff die 2 of mould 4 bonded to each other in the conical surface.
The operation principle of the present invention is as follows: will be equipped with processing the upper Huff die 1 of the pipe fitting 5 of expansion joint and lower Huff die 2
Fill in after involutory in the inner chamber of monoblock type protection mould 4, make outer wall and the monoblock type protection mould 4 of Huff die 1 and lower Huff die 2
Internal chamber wall is bonded to each other, is then put into by hydraulic tube expander in pipe fitting 5, and hydraulic tube expander produces high pressure, makes pipe fitting 5 at expansion slot
The position of 31 expands and heaves and form expansion joint, upper Huff die 1 and lower Huff die 2 stress also outward expansion when pipe fitting 5 expands,
And due to bonded to each other in the conical surface, i.e. between internal chamber wall and the outer wall of upper Huff die 1 and lower Huff die 2 of monoblock type protection mould 4
The inner chamber of monoblock type protection mould 4 is tapered to other end by one end, involutory after the outer wall of Huff die up and down also in one end
To the tapered shape of the other end, when outward expansion after upper and lower Huff die is expanded, its outer wall will be protected with monoblock type
Protect the mutual swelling of conical internal cavity wall of mould 4, monoblock type protection mould 4 with will not occur between upper Huff die 1 and lower Huff die 2 relative
Slide.During tubular expansion, monoblock type protection mould 4 bears the bulbs of pressure, it is ensured that process expansion joint on pipe fitting 5
The normal expansion at position.Treat that pipe fitting 5 expands complete, only by the method tapped, upper and lower Huff die need to be protected mould 4 from monoblock type
It is knocked out obtaining the complete pipe fitting of tube expansion 5.
Claims (2)
1. on pipe fitting, process frock used for expansion joint for one kind, it is characterised in that: include the upper die and lower die of involutory use, involutory
After upper die and lower die between form forming tank, described forming tank is provided with expansion slot, involutory after upper die and lower die outside
It is set with the monoblock type protection mould of band conical internal cavity, outside the conical internal cavity wall of described monoblock type protection mould is with upper die and lower die
Between wall bonded to each other in the conical surface.
The most according to claim 1 a kind of on pipe fitting, process frock used for expansion joint, it is characterised in that: described upper mold
It is upper and lower Huff die with lower mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701892.7A CN106077302A (en) | 2016-08-19 | 2016-08-19 | A kind of on pipe fitting, process frock used for expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701892.7A CN106077302A (en) | 2016-08-19 | 2016-08-19 | A kind of on pipe fitting, process frock used for expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106077302A true CN106077302A (en) | 2016-11-09 |
Family
ID=57225615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610701892.7A Pending CN106077302A (en) | 2016-08-19 | 2016-08-19 | A kind of on pipe fitting, process frock used for expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106077302A (en) |
-
2016
- 2016-08-19 CN CN201610701892.7A patent/CN106077302A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |
|
| WD01 | Invention patent application deemed withdrawn after publication |