CN202781773U - Mandrel - Google Patents
Mandrel Download PDFInfo
- Publication number
- CN202781773U CN202781773U CN2012204609142U CN201220460914U CN202781773U CN 202781773 U CN202781773 U CN 202781773U CN 2012204609142 U CN2012204609142 U CN 2012204609142U CN 201220460914 U CN201220460914 U CN 201220460914U CN 202781773 U CN202781773 U CN 202781773U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- plug
- tail
- utility
- internal thread
- 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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Abstract
The utility model discloses a mandrel. The mandrel comprises a mandrel body and a mandrel tail, wherein the mandrel body is movably connected with the mandrel tail; the mandrel body is in threaded connection with the mandrel tail; an internal thread is arranged at the bottom of the mandrel body, an external thread is arranged at the top of the mandrel tail, and the external thread and the internal thread are matched. According to the mandrel, the mandrel body is movably connected with the mandrel tail, so that the position relation between the mandrel tail and the mandrel body can be regulated, consequentially, force in an extrusion process can be controlled well, and the thickness deviation of the tube walls of polytetrafluoroethylene tubes is reduced.
Description
Technical field
The utility model relates to the device in a kind of polytetrafluoroethyltubing tubing extrusion process, relates in particular to a kind of plug.
Background technology
The forming method that polytetrafluoroethyltubing tubing is general has the sintering process of winding, extrusion etc.In the extrusion technological process of prior art, plug and cylinder body, type casement and main mould form cavity in the pressure head extruder, and the blank of polytetrafluoroethylene (PTFE) is put in the extruder, and pressure head forms tubulose with the extruded cavity of crossing of blank.Core in this technology is one-body molded, causes easily pushing unbalance stress in extrusion process, the central shaft skew, thus causing polytetrafluoroethyltubing tubing tube wall became uneven, error is large.This problem need to be improved and solve.
The utility model content
The utility model technical issues that need to address provide a kind of applied widely, can make the polytetrafluoroethyltubing tubing extrusion process uniform plug of exerting oneself.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of plug comprises plug body and plug tail, and wherein plug body and plug tail are flexibly connected.The plug tail can be along plug body move left and right, thereby so that the central shaft of plug tail and remaining part is consistent as far as possible, reduces deviation.
Further, described plug body is threaded with the plug tail.
Further, internal thread is arranged at the bottom of described plug body, and external screw thread is arranged at the top of plug tail, and external screw thread and internal thread match.
Compared with prior art, plug body and plug tail are flexibly connected in the utility model, can adjust the position relationship of plug tail and plug body, thereby can better control the grasp of dynamics in the extrusion process, reduce the deviation of polytetrafluoroethyltubing tubing pipe thickness.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
In conjunction with Fig. 1, the utility model relates to a kind of plug, and it includes plug body 1 and plug tail 2, plug body 1 is threaded with plug tail 2, the bottom interior wall of plug body 1 has internal thread 11, and external screw thread 21 is arranged at the top of plug tail 2, and internal thread 11 matches with external screw thread 21.In use, can be by the position relationship between threaded adjusting plug body 1 and the plug tail 2, the length of control plug tail 2, the utility model can solve the shortcoming of prior art, it is stressed evenly to be convenient to extrusion process, reduces the deviation of polytetrafluoroethyltubing tubing pipe thickness.
Claims (3)
1. a plug comprises plug body and plug tail, it is characterized in that: plug body and plug tail are flexibly connected.
2. a kind of plug according to claim 1, it is characterized in that: described plug body is threaded with the plug tail.
3. a kind of plug according to claim 2, it is characterized in that: internal thread is arranged at the bottom of described plug body, and external screw thread is arranged at the top of plug tail, and external screw thread and internal thread match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204609142U CN202781773U (en) | 2012-09-10 | 2012-09-10 | Mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204609142U CN202781773U (en) | 2012-09-10 | 2012-09-10 | Mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202781773U true CN202781773U (en) | 2013-03-13 |
Family
ID=47809102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204609142U Expired - Lifetime CN202781773U (en) | 2012-09-10 | 2012-09-10 | Mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202781773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947815A (en) * | 2019-11-29 | 2020-04-03 | 太原科技大学 | Combined core rod for spinning large-diameter steel pipe |
-
2012
- 2012-09-10 CN CN2012204609142U patent/CN202781773U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947815A (en) * | 2019-11-29 | 2020-04-03 | 太原科技大学 | Combined core rod for spinning large-diameter steel pipe |
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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: 20130313 |