CN101579921B - Auxiliary expanding equipment - Google Patents
Auxiliary expanding equipment Download PDFInfo
- Publication number
- CN101579921B CN101579921B CN2009100871798A CN200910087179A CN101579921B CN 101579921 B CN101579921 B CN 101579921B CN 2009100871798 A CN2009100871798 A CN 2009100871798A CN 200910087179 A CN200910087179 A CN 200910087179A CN 101579921 B CN101579921 B CN 101579921B
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- China
- Prior art keywords
- die head
- clamping rod
- net
- expander
- expanding equipment
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- Expired - Fee Related
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Abstract
The invention relates to auxiliary expanding equipment, comprising a net cover placed in an expanded tube, a die head placed in the net cover and a clamping rod; one side of the clamping rod, backing on to the die head, is provided with a threaded hole connected with a driving device; the die head can move along the net cover under the drive of the clamping rod; the net cover can open with stress and retract without stress; when the opening of a hot plastic tube is expanded, the net cover and the hot plastic tube are clamped on the clamping rod by a fastening circular ring for clamping and stretching. The auxiliary expanding equipment of the invention avoids the friction between the hot plastic tube in elastomeric state and the die head from affecting the expansion of the opening of the hot plastic tube and is suitable for industrialized production.
Description
Technical field
The present invention relates to a kind of auxiliary expanding equipment that heat is received pipe of processing.
Background technology
Heat-shrinkable tube is the high molecular products with " elastic memory " that adopts macromolecular material to make.When heat-shrinkable tube being carried out after axial tension and adjacent circumferential expansion be biaxial tension, its axial strength and circumferential strength have raising in various degree.Using commonplace biaxial tension method is the die head pulling method.Die head pulling method technology is simple, productivity ratio height, and suitable suitability for industrialized production.In the die drawing subtraction unit of up-to-date United States Patent (USP) 6,135,749 narrations, after its technological process was extruder extrusion plastic pipe, plastic tube was heated to vitrification point through high temperature fluid, again through after the core expansion, via the cooling liquid cooling, advance by the hauling machine traction.Wherein by expander owing to be heated to more than the vitrification point, soft plastic tube can directly put on the core of tapering.The die drawing method process structure that this patent is introduced is simple, easy to operate, be suitable for the streamline production of plastic pipe, but because the frictional force that still exists between heated plastic tube and the die head, the heated plastic tube mouth of pipe is piled up when putting die head easily, laminate, make the flared part of plastic tube inhomogeneous, also increased difficulty the clamping work of expanding the back plastic tube mouth of pipe.
Summary of the invention
Auxiliary expanding equipment of the present invention technical problem to be solved is the above-mentioned defective that overcomes above-mentioned existing extension fixture, provide a kind of and can easily finish enlarging work and to the auxiliary expanding equipment of flared part clamping, this device has improved the production efficiency of thermoplastic tube.
To achieve these goals, the present invention has adopted following technical scheme: comprise that part is placed on by the net 2 in the expander 1 and is placed on die head 4 and clamping rod 5 in the net 2, clamping rod 5 side of die head 4 dorsad is provided with and is used for the screwed hole that is connected with drive unit, and die head 4 can move along net 2 under the promotion of clamping rod 5; Clamping rod 5 dorsad the outer surface of a side of die head 4 be provided with fastening annulus 6.
Described net 2 is by the exotic material manufacturing, and the invalid temperature of the making material of net 2 or softening temperature are greater than by the flow temperature of the making material of expander 1.Described is plastic pipe by expander, and in the flow temperature scope of plastic pipe, the shape and the performance of net do not change.Net opens when being subjected to internal force, bounces back when not being subjected to internal force.
The step ladder circular ring that is shaped as the slope transition of described clamping rod 5, the external diameter of large circle is identical with die head column part external diameter, and fastening annulus 6 is arranged on the outer surface of small circle ring part.
The clamping rod is provided with protruding circular ring towards the end face of die head, and this annulus can agree with mutually with the groove that is provided with on the clamping plane rod end.
Effect of the present invention: auxiliary expanding equipment of the present invention, simple in structure, easy to operate, can carry out mouth of pipe expansion very easily and to the clamping of the expansion mouth of pipe, this device can be used for the continuous expansion of plastic pipe, is applicable to suitability for industrialized production, and has very high production efficiency.
Description of drawings
Fig. 1 is the preceding schematic diagram of the expander of auxiliary expanding equipment of the present invention
Fig. 2 is a schematic diagram behind the expander of auxiliary expanding equipment of the present invention
Among the figure: 1, by expander, 2, the metal net, 3, mandrel, 4, die head, 5, the clamping rod, 6, fastening annulus.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, the extension fixture in the present embodiment comprises metal net 2, die head 4, clamping rod 5 and fastening annulus 6.
Metal net 2 opens when being subjected to internal force, bounces back when not being subjected to internal force, and its first half stretches into by in the expander 1, and latter half is enclosed within on the clamping rod 5 and die head 4 that fits together.Clamping rod 5 side of die head 4 dorsad is provided with and is used for the screwed hole that is connected with drive unit, and die head 4 can move along net 2 under the promotion of clamping rod 5.
The shape of clamping rod 5 as shown in Figure 1, for the step ladder circular ring of slope transition is arranged, the external diameter of large circle is identical with die head column part external diameter, the outer surface of small circle ring part is provided with fastening annulus 6, the internal diameter of fastening annulus 6 is slightly larger than the minimum outer diameter of clamping rod 5.
As shown in Figure 2, be provided with the annulus of projection in the left side of clamping rod 5, be provided with the annular groove that can agree with mutually with the protruding circular ring on the clamping rod in the right side of die head 4, when clamping rod 5 promotion die heads 4 made one play motion, the clamping rod just agreed with groove by the annulus of projection mutually with die head.
The using method of auxiliary expanding equipment of the present invention is as follows: metal net 2 left-half stretch into by in the expander 1, right half part is enclosed within on the clamping rod 5 and die head 4 that fits together, after being heated to uniform temperature by expander 1, keep metal net 2 axially motionless, apply external force and advance clamping rod 5 and die head 4 left, then the conical section of die head 4 to the left side by expander 1 in advance, as shown in Figure 1, big by 2 supports of the metal net in the expander 1, outside be stretched by expander is also corresponding, after die head 4 and clamping rod 5 enter the thermal plastic pipe together, be fastened on the right path cylinder of clamping rod 5 extending metal net 2 that comes out and the plastic tube of having expanded with fastening annulus 6, keep die head 4 motionless then, the clamping rod 5 that stretches is to the right located until hauling machine (not marking), the continuous expansion of carrying out plastic tube stretches, as shown in Figure 2.In the auxiliary expanding equipment of the present invention, die head 4 and mandrel 3 are threaded, and wherein in the one-step method expansion, mandrel 3 is connected with the core of extruder and is in sustained height with core, and in the two-step method expansion, mandrel 3 is connected with threaded screw rod.
Claims (2)
1. auxiliary expanding equipment, it is characterized in that: comprise that part is placed on by the net (2) in the expander (1) and is placed on die head (4) and clamping rod (5) in the net (2), clamping rod (a 5) side of die head (4) dorsad is provided with and is used for the screwed hole that is connected with drive unit, and die head (4) can move along net (2) under the promotion of clamping rod (5); Clamping rod (5) dorsad the outer surface of a side of die head (4) be provided with fastening annulus (6);
Described net (2) is for to be made by exotic material, and the invalid temperature of the making material of net (2) or softening temperature are greater than by the flow temperature of the making material of expander (1);
Described is plastic pipe by expander, and in the flow temperature scope of plastic pipe, the shape and the performance of net do not change, and net opens when being subjected to internal force, bounces back when not being subjected to internal force;
The step ladder circular ring that is shaped as the slope transition of described clamping rod (5), the external diameter of large circle is identical with die head column part external diameter, and fastening annulus (6) is arranged on the outer surface of small circle ring part.
2. auxiliary expanding equipment according to claim 1 is characterized in that: the clamping rod is provided with protruding circular ring towards the end face of die head, and this annulus can agree with mutually with the groove that is provided with on the clamping plane rod end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100871798A CN101579921B (en) | 2009-06-19 | 2009-06-19 | Auxiliary expanding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100871798A CN101579921B (en) | 2009-06-19 | 2009-06-19 | Auxiliary expanding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101579921A CN101579921A (en) | 2009-11-18 |
| CN101579921B true CN101579921B (en) | 2011-05-18 |
Family
ID=41362296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100871798A Expired - Fee Related CN101579921B (en) | 2009-06-19 | 2009-06-19 | Auxiliary expanding equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101579921B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873821B (en) * | 2021-01-08 | 2022-11-25 | 康泰塑胶科技集团有限公司 | High-orientation degree PVC-O pipe with steel skeleton rubber ring arranged in socket in advance and forming method thereof |
-
2009
- 2009-06-19 CN CN2009100871798A patent/CN101579921B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101579921A (en) | 2009-11-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20150619 |
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| EXPY | Termination of patent right or utility model |