CN2303721Y - Expanding tool for cross-linked polyethylene tube - Google Patents
Expanding tool for cross-linked polyethylene tube Download PDFInfo
- Publication number
- CN2303721Y CN2303721Y CN 97244414 CN97244414U CN2303721Y CN 2303721 Y CN2303721 Y CN 2303721Y CN 97244414 CN97244414 CN 97244414 CN 97244414 U CN97244414 U CN 97244414U CN 2303721 Y CN2303721 Y CN 2303721Y
- Authority
- CN
- China
- Prior art keywords
- mould
- rises
- lower handle
- utility
- supporting nut
- 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.)
- Expired - Fee Related
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model relates to an expanding tool for a plastic tube. The utility model comprises an upper handle and a lower handle (7, 8), a connecting rod 5, supporting nut 4, a cone core rod 2 and an expanding film. The connecting rod 5 is connected with the tips of the upper handle and the lower handle (7, 8) by tips (6, 10). The supporting nut 4 is connected with the lower handle 8 by the thread structure. The cone core rod 2 is connected with the tip of the upper handle 7. The expanding film is composed of a plurality of expanding film monomers 1 and an O-shaped elastic ring 3, and the expanding film monomers 1 are ringed to from an integrative structure by the O-shaped elastic ring 3. The trough 4 (1) is supported in the trough 4 (1) of the supporting nut 4, and the trough 4 (1) is contacted with the conical surface of the cone core rod. The utility model has the advantages of simple structure, labour saving, convenient use, etc. When the utility model is used, the expansion ratio and the retraction force of all direction of the expanded plastic pipe are same to each other.
Description
The utility model relates to a kind of instrument that enlarges the plastic tube caliber.
In water supply pipe system, drainage, replacing galvanized iron conduit with plastic tube is the inexorable trend of development, but plastic tube replaces existing galvanized iron conduit must solve the interface problem of plastic tube earlier, and existing ways of addressing this issue is to adopt screw clamp compact form connecting mode.The used fitting structure more complicated of this mode need be used the snap ring and the threaded metal connecting piece of band opening, thus processing difficulties, volume greatly, cost is also than higher.And also there is a very serious defective in this mode, and promptly pipeline produces " undergauge " problem at the pipe fitting place.The technical staff of our company is through discovering: the crosslinked polyethylene pipe that uses has very strong memory characteristic now, utilize this characteristic, use a kind of instrument, a bit of crosslinked polyethylene pipe bore is enlarged, be enclosed within then on the pipe joint, through after a few minutes, the pipe retraction of extended internal diameter, recovery is tightly bound round on pipe joint at original state, reaches well to connect and sealing function.It is simple that this mode has an accessory, only need a bit of crosslinked polyethylene pipe as connector, it is lower to have a cost, processes easier characteristics, its sealing is with to connect effect better than screw clamp compact form connecting mode, and fundamentally solved " undergauge " problem in the plastic piping.But, never find that so far a kind of instrument can enlarge the caliber of crosslinked polyethylene pipe easily.
The purpose of this utility model provides a kind of instrument that can enlarge elasticity high molecule plastic pipe caliber easily.
The purpose of this utility model is achieved in that and comprises upper and lower handle, the connecting rod of lower handle in the binding, can be connected in the supporting nut on the lower handle, the mould that rises that the circular cone plug that is connected with the upper handle tip, frame invest in the supporting nut slot and its bore area contacts with the circular cone plug conical surface.
Rise by mould by the identical mould monomer and their circle all-in-one-piece O shape elastic rings are constituted of rising of multi-sheet structure.Rising, expander footpath effect is good more more at most for the mould monomer.
Its operation principle is such: the last lower handle of closed the utility model instrument, because last lower handle is by the connecting rod effect, the circular cone plug that is connected with the upper handle tip is pushed downwards, mould is to be reached with their circle all-in-one-piece O shape elastic rings by the identical mould monomer that rises of multi-disc to constitute owing to rise, its inner surface contacts with the circular cone plug conical surface, mould rises greatly with the extruding downwards of circular cone plug so rise, thereby can drive the expansion of the crosslinked polyethylene caliber that is enclosed within its outside.Open the last lower handle of instrument, the circular cone plug moves upward and extracts out in the mould that rises, and rises by the mould monomer under the effect of flexible O shape circle, inwardly reclaims, and the whole mould retraction that rises separates with its outer plastic tube.
Because the utility model has used lever principle, adopt the circular cone plug conical surface to drive the mould that rises, the mould that rises expansion plastic tube caliber, the structure that the mould monomer that rises can bounce back under the effect of O shape elastic ring elastic force, have easy to use laborsaving, identical with retraction force by the expansion ratio of the plastic tube all directions of hole enlargement, this pipe is applied on the pipe joint, and better connection and sealing effectiveness are arranged; The use of this instrument will help and reduce engineering material cost and the installation fee that adopts plastic tube, effectively promote the application and the development of plastic tube.
Fig. 1 is the mould germ band partial sectional view just that rises;
Fig. 2 is the mould germule upward view that rises;
Fig. 3 be embodiment rise mould with the supporting nut installation diagram;
Fig. 4 is the front view of the embodiment of band partial cutaway;
Fig. 5 is that K is to view;
In conjunction with the accompanying drawings embodiment is elaborated:
(with reference to Fig. 1,2) the mould monomer that rises is to process according to the concrete structure integral body of mould germule of rising.As Fig. 2, be otch vertically with the double dot dash line, the even incision of the mould germule that rises is divided into six five equilibriums, constitute six mould monomers that rise.The mould that rises the just even umber that cuts of indusium is decided as required, and the mould monomer that generally rises is many, and then result of use is good more.
(with reference to Fig. 3,4) O shape elastic ring 3 is in the groove 4 (1) in the supporting nut 4, and the rise supporting shoulder 1 (1) of mould monomer 1 of banding is the mould monomer 1 hoop formation mould that rises together that rises.When 2 extractions of normal running circular cone plug rose by the mould endoporus, O shape elastic ring 3 diminished the automatic retraction of the mould that rises, and the supporting shoulder 1 (1) of the mould monomer 1 that rises is in the groove 4 (1) of supporting cap 4.The top of supporting nut 4 is connected with lower handle 8 by helicitic texture, and the effect of supporting nut 4 is to support the mould that rises, and the mould that rises is connected on the lower handle 8.
(with reference to Fig. 4,5) upper handle 7, lower handle 8 are connected with connecting rod 5 by the tip 6, the tip 10 respectively, and upper and lower handle (7,8) is that fulcrum rotates with end two tips (6,10).Circular cone plug 2 is connected with upper handle 7 by the tip 11, and its cone matches with the mould inner surface circular cone inner hole surface that rises that the mould monomer 1 that rises constitutes, and constitutes mating surface.The top of supporting nut 4 is connected with lower handle 8, utilizes groove 4 (1) that the supporting of the mould that rises shoulder 1 (1) is blocked, and reaches and supports the purpose that the mould that rises can make the mould that rises can rise and dwindle greatly again.O shape elastic ring 3 is enclosing the supporting shoulder 1 (1) of the mould monomer 1 that rises, and is in it in the groove 4 (1) of supporting nut 4.Do not hold at last lower handle (7,8) to be with taper knob 9, conveniently hold tight handle.
Claims (2)
1, plastic tube hole enlargement instrument, it is characterized in that: comprise upper and lower handle and the connecting rod that is connected with the upper and lower handle tip, the supporting nut that is connected with lower handle has the circular cone plug that is connected with the upper handle tip, and frame invests on the supporting nut and the mould that rises that contacts with the circular cone plug conical surface.
2, plastic tube hole enlargement instrument according to claim 1 is characterized in that: the mould that rises is by the identical mould monomer and their circle all-in-one-piece O shape elastic rings are constituted of rising of multi-sheet structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97244414 CN2303721Y (en) | 1997-07-25 | 1997-07-25 | Expanding tool for cross-linked polyethylene tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97244414 CN2303721Y (en) | 1997-07-25 | 1997-07-25 | Expanding tool for cross-linked polyethylene tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2303721Y true CN2303721Y (en) | 1999-01-13 |
Family
ID=33953143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97244414 Expired - Fee Related CN2303721Y (en) | 1997-07-25 | 1997-07-25 | Expanding tool for cross-linked polyethylene tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2303721Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142527A (en) * | 2016-07-27 | 2016-11-23 | 广东联塑科技实业有限公司 | A kind of tube expander shown and limit expander amount |
| CN107921697A (en) * | 2015-06-10 | 2018-04-17 | 米沃奇电动工具公司 | PEX expansion tools |
| US10926451B2 (en) | 2015-04-20 | 2021-02-23 | Milwaukee Electric Tool Corporation | PEX expanding tool |
| US10946576B2 (en) | 2015-06-10 | 2021-03-16 | Milwaukee Electric Tool Corporation | PEX expanding tool |
-
1997
- 1997-07-25 CN CN 97244414 patent/CN2303721Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10926451B2 (en) | 2015-04-20 | 2021-02-23 | Milwaukee Electric Tool Corporation | PEX expanding tool |
| US11648727B2 (en) | 2015-04-20 | 2023-05-16 | Milwaukee Electric Tool Corporation | PEX expanding tool |
| CN107921697A (en) * | 2015-06-10 | 2018-04-17 | 米沃奇电动工具公司 | PEX expansion tools |
| US10946576B2 (en) | 2015-06-10 | 2021-03-16 | Milwaukee Electric Tool Corporation | PEX expanding tool |
| CN106142527A (en) * | 2016-07-27 | 2016-11-23 | 广东联塑科技实业有限公司 | A kind of tube expander shown and limit expander amount |
| CN106142527B (en) * | 2016-07-27 | 2019-02-15 | 广东联塑科技实业有限公司 | A kind of tube expander shown and limit expander amount |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |