CN202480360U - Polytetrafluoroethylene pipe extrusion molding composite die - Google Patents
Polytetrafluoroethylene pipe extrusion molding composite die Download PDFInfo
- Publication number
- CN202480360U CN202480360U CN2012201361910U CN201220136191U CN202480360U CN 202480360 U CN202480360 U CN 202480360U CN 2012201361910 U CN2012201361910 U CN 2012201361910U CN 201220136191 U CN201220136191 U CN 201220136191U CN 202480360 U CN202480360 U CN 202480360U
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- CN
- China
- Prior art keywords
- core
- mould
- extrusion molding
- polytetrafluoroethylene
- mouthful
- 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 - Lifetime
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a polytetrafluoroethylene pipe extrusion molding composite die. The polytetrafluoroethylene pipe extrusion molding composite die comprises an extrusion die (1) and a mandrel (2). The mandrel (2) is arranged in the extrusion die (1). The overall shape of the extrusion die (1) is a hollow cylinder and the overall shape of the mandrel (2) is also a hollow cylinder. A discharging channel (7) exists between the inner wall of the extrusion die (1) and the outer wall of the mandrel (2). The front end of the extrusion die (1) and the front end of the mandrel (2) are provided with polytetrafluoroethylene (3). A screw hole (5) is arranged on the side wall of the extrusion die (1). A fixing hole (6) is arranged at the bottom of the mandrel (2). The structure is adopted in the polytetrafluoroethylene pipe extrusion molding composite die to increase melt flow friction, decrease extruding load, and reduce volatile substance attachment. Thus, energy consumption is reduced, pipe extruding speed is increased, and pipe surface quality is improved.
Description
Technical field
The utility model relates to tubing production, manufacture field, specifically is polytetrafluoroethyltubing tubing extrusion molding composite die.
Background technology
At present, general pipe production line adopts traditional mouth mould, core structure, and handle without chromium plating on the surface; Thereby make fineness not enough, add that general tubing materials locate homemade material basically, the color masterbatch ratio is too high; Volatile content control is not very excellent with thermo-responsive, heat endurance, appearance " thickener " phenomenon easily just in receiving hot procedure, and these thickeners are easy to be bonded at a mouthful mould edge; Influence the tube surfaces quality, form vertical lines and draw trace; " thickener " can drop in tube surfaces along with the lengthening of the time of accumulation in extruding motion process simultaneously, forms in " hole " or " scar ".Show formation " hole " or " scar " for fear of tubing, regularly clear up at counterpart mould edge with regard to needs, so just quickened the cycle of shutdown or Hand scarf mouth mould, make into product cost, percent defective increase, product quality descends.
The utility model content
The utility model provides a kind of polytetrafluoroethyltubing tubing extrusion molding composite die; Solve extruded mould in the past and occurred " thickener " phenomenon easily; Influence the tube surfaces quality; Form vertical lines and draw trace, more quicken the cycle of shutdown or Hand scarf mouth mould simultaneously, make into the problem of product cost, percent defective increase.
The utility model is that the technical solution problem mainly realizes through following technical scheme: polytetrafluoroethyltubing tubing extrusion molding composite die, comprise mouthful mould and core, and said core is positioned at a mouthful mould; The global shape of said mouthful of mould is a hollow cylinder; The global shape of said core also is a hollow cylinder, forms tapping channel between the inwall of mouthful mould and the outer wall of core, and the front end of said mouth mould and core is provided with polytetrafluoroethylene (PTFE); The sidewall of said mouthful of mould is provided with screw, and the bottom of said core is provided with fixing hole.
Polytetrafluoroethylene (PTFE) is a kind of macromolecule fluoropolymer polymer, and this material has the characteristics of antiacid alkali resistant, anti-various organic solvents, is dissolved in all solvents hardly.Characteristics such as simultaneously, polytetrafluoroethylene (PTFE) has resistant to elevated temperatures characteristics (260 ℃ can be used for a long time, reach as high as 400 ℃), and its coefficient of friction is extremely low.
The mouth mould is fixed on the production equipment through screw, and core is fixed on the production equipment through fixing hole equally, forms tapping channel between mouthful mould and the core; Mouth mould and core are heated by heating ring, and raw material comes out to form tubing from tapping channel.
The center line of said mouthful of mould and the center line of core overlap.
Said polytetrafluoroethylene (PTFE) is through being bolted to the front end of mouthful mould and core.
The inwall of said mouthful of mould is a rotating curved surface structure, and the outer wall of core also is a rotating curved surface structure.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model is provided with polytetrafluoroethylene (PTFE) at the front end of mouth mould and core, has improved flow of melt to friction, reduces and extrudes load, reduces volatile matter and adheres to, thereby reached the purpose that cuts down the consumption of energy, improves the tubing extruded velocity, improves the tube surfaces quality.
(2) the utility model is after the front end of mouth mould and core is provided with polytetrafluoroethylene (PTFE); The cycle of clean-up port mould obviously extends; Be generally cleaning in 12 or 24 hours in the past once, and adopted after the utility model structure, general cleaning is once more than 3 days or 3 days; Improve production efficiency, more reduced percent defective simultaneously.
Description of drawings
Fig. 1 is the vertical view of the utility model;
Fig. 2 is the profile of the utility model.
Pairing Reference numeral is in the accompanying drawing: 1, mouthful mould, 2, core, 3, polytetrafluoroethylene (PTFE), 4, bolt, 5, screw, 6, fixing hole, 7, tapping channel.
The specific embodiment
Below in conjunction with embodiment the utility model is done further to specify, but the embodiment of the utility model is not limited thereto.
Embodiment:
Like Fig. 1, shown in Figure 2, the utility model comprises mouthful mould 1 and core 2, and core 2 is positioned at mouthful mould 1, and the global shape of mouthful mould 1 is a hollow cylinder, and the global shape of core 2 also is a hollow cylinder, forms tapping channel 7 between the inwall of mouthful mould 1 and the outer wall of core 2.
The mouth mould 1 of present embodiment and the front end of core 2 are provided with polytetrafluoroethylene (PTFE) 3, and the sidewall of mouthful mould 1 is provided with screw 5, and the bottom of core 2 is provided with fixing hole 6.
The center line of the mouth mould 1 of present embodiment and the center line of core 2 overlap.
The polytetrafluoroethylene (PTFE) 3 of present embodiment is fixed on the front end of mouthful mould 1 and core 2 through bolt 4.
The inwall of the mouth mould 1 of present embodiment is a rotating curved surface structure, and the outer wall of core 2 also is a rotating curved surface structure.
The operation principle of the utility model is: at first operation and be shaped in the tapping channel 7 of raw material between mouth mould 1 and core 2, the tubing after the shaping comes out from mouth mould 1 front end, polytetrafluoroethylene (PTFE) 3 effect under, avoided occurring the problem of thickener.
As stated, then can realize the utility model well.
Claims (4)
1. polytetrafluoroethyltubing tubing extrusion molding composite die; It is characterized in that: comprise a mouthful mould (1) and core (2); Said core (2) is positioned at a mouthful mould (1), and the global shape of said mouthful of mould (1) is a hollow cylinder, and the global shape of said core (2) also is a hollow cylinder; Form tapping channel (7) between the inwall of mouth mould (1) and the outer wall of core (2); The front end of said mouth mould (1) and core (2) is provided with polytetrafluoroethylene (PTFE) (3), and the sidewall of said mouthful of mould (1) is provided with screw (5), and the bottom of said core (2) is provided with fixing hole (6).
2. polytetrafluoroethyltubing tubing extrusion molding composite die according to claim 1 is characterized in that: the center line of said mouthful of mould (1) and the center line of core (2) overlap.
3. polytetrafluoroethyltubing tubing extrusion molding composite die according to claim 1 is characterized in that: said polytetrafluoroethylene (PTFE) (3) is fixed on the front end of a mouthful mould (1) and core (2) through bolt (4).
4. polytetrafluoroethyltubing tubing extrusion molding composite die according to claim 1 is characterized in that: the inwall of said mouthful of mould (1) is a rotating curved surface structure, and the outer wall of core (2) also is a rotating curved surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201361910U CN202480360U (en) | 2012-03-31 | 2012-03-31 | Polytetrafluoroethylene pipe extrusion molding composite die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201361910U CN202480360U (en) | 2012-03-31 | 2012-03-31 | Polytetrafluoroethylene pipe extrusion molding composite die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202480360U true CN202480360U (en) | 2012-10-10 |
Family
ID=46954817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201361910U Expired - Lifetime CN202480360U (en) | 2012-03-31 | 2012-03-31 | Polytetrafluoroethylene pipe extrusion molding composite die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202480360U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144271A (en) * | 2013-03-13 | 2013-06-12 | 昆明特瑞特塑胶有限公司 | Exit molding device for plastic extruder |
| CN103171114A (en) * | 2013-03-01 | 2013-06-26 | 福州通尔达电线电缆有限公司 | Combined extrusion-molding mold used in wire cable processing |
-
2012
- 2012-03-31 CN CN2012201361910U patent/CN202480360U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171114A (en) * | 2013-03-01 | 2013-06-26 | 福州通尔达电线电缆有限公司 | Combined extrusion-molding mold used in wire cable processing |
| CN103144271A (en) * | 2013-03-13 | 2013-06-12 | 昆明特瑞特塑胶有限公司 | Exit molding device for plastic extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |