CN201168740Y - Inner screw thread core for producing inner screw thread copper pipe - Google Patents
Inner screw thread core for producing inner screw thread copper pipe Download PDFInfo
- Publication number
- CN201168740Y CN201168740Y CNU200820031649XU CN200820031649U CN201168740Y CN 201168740 Y CN201168740 Y CN 201168740Y CN U200820031649X U CNU200820031649X U CN U200820031649XU CN 200820031649 U CN200820031649 U CN 200820031649U CN 201168740 Y CN201168740 Y CN 201168740Y
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- China
- Prior art keywords
- core print
- main body
- screw thread
- inner screw
- internal
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Abstract
The utility model discloses an internal-thread core print for producing internal thread copper tube. The internal-thread core print comprises a core print main body and a plurality of jugged grooves which are arranged on the lateral outer surface of the core print main body and extend along the axial direction of the core print main body. The jugged grooves are evenly distributed on the lateral outer surface of the core print main body, start from the top end surface of the core print main body and end at the bottom end surface of the core print main body; two adjacent jugged grooves form a tooth block. The cross surface of the top end surface and the lateral wall surface of each tooth block is a smooth transition surface. During the production of the internal-thread copper tube with the internal-thread core print, the jugged grooves of the internal-thread core print are corresponding to the teeth of the internal-thread copper tube, and the metal flow is easy to pass through the smooth transition place to fill the jugged grooves of the internal-thread core print; the shapes of the teeth formed on the internal-thread copper tube are plump, thereby being favorable for reinforcing the heat transferring efficiency of the internal-thread copper tube.
Description
Technical field
The utility model relates to a kind of core head, especially a kind of core head that is used for scheduler with inner screw thread copper pipe.
Background technology
In the core head of prior art, it comprises the core print main body, be opened on the core print main body side outer surface and along its axially extended a plurality of teeth groove, form the tooth piece between the adjacent teeth groove, the top end face of this tooth piece and the intersection of side wall surface are the structure of microcosmic step, produce in the inner screw thread copper pipe process as mould with existing core head like this, metal flow is by above-mentioned intersection the time, the teeth groove that is difficult for the full core head of stream, cause being difficult on the inner screw thread copper pipe tooth, perhaps the profile of tooth of Xing Chenging is not full.
Summary of the invention
The purpose of this utility model is to provide a kind of core head, and when producing inner screw thread copper pipe with this core head, the profile of tooth on the inner screw thread copper pipe is full.
In order to reach above purpose, the technical solution adopted in the utility model is: a kind of core head that is used to produce inner screw thread copper pipe, comprise the core print main body, be opened on the described core print main body side outer surface and along its axially extended a plurality of teeth groove, a plurality of described teeth groove evenly distribute on described core print main body side outer surface, described teeth groove originates in the top end face of described core print main body, end at the bottom face of described core print main body, form the tooth piece between the adjacent described teeth groove, the top end face of described tooth piece is the smooth transition face with the cross surface mutually of side wall surface.
Described smooth transition face is an arc surface, and the radius of this arc surface is 0.05mm～0.09mm.
Described tooth piece roughly is the straight-tooth shape.
The bottom of described tooth piece is 0.23～0.28mm to the height between the top.
Perpendicular to described core print body shaft to the cross section on, the angle between the dual-side of described tooth piece be 0～15 the degree.
The groove bottom of described teeth groove also is a smooth transition with the cross surface mutually of both sides trough wall surface.
Because the utility model has adopted above technical scheme, its advantage is:
The top end face of tooth piece is the smooth transition face with the cross surface mutually of side wall surface, and metal flow is full of the teeth groove of core head easily by this smooth transition place, and the profile of tooth that forms on the inner screw thread copper pipe is full, helps strengthening the heat-transfer effect of inner screw thread copper pipe.
Description of drawings
Accompanying drawing 2 is a schematic side view of the present utility model;
Accompanying drawing 3 is the enlarged drawing at A place in the accompanying drawing 2;
Wherein:
1, core print main body; 2, teeth groove; 3, tooth piece; 4, smooth transition face.
The specific embodiment
Further set forth concrete structure of the present utility model and principle below in conjunction with accompanying drawing.
Shown in accompanying drawing 1-3, a kind of core head that is used to produce inner screw thread copper pipe, has cylindrical core print main body 1, on this core print main body 1 side external surface, offer along its axially extended a plurality of teeth groove 2, a plurality of teeth groove 2 evenly distribute on core print main body 1 side external surface, this teeth groove 2 originates in the top end face of core print main body 1, end at the bottom face of core print main body 1, be that teeth groove 2 connects on the axial direction of core print main body 1, form tooth piece 3 between the adjacent teeth groove 2, the top end face of this tooth piece 3 is a smooth transition face 4 with the cross surface mutually of both sides side wall surface, this smooth transition face (4) extending axially along core print main body (1).As shown in Figure 3, this smooth transition face 4 is an arc surface in the present embodiment, and the radius of this arc surface is 0.05mm～0.09mm.Tooth piece 3 roughly is the straight-tooth shape, and its helical angle is 0～3 degree.The bottom of tooth piece 3 is 0.23～0.28mm to the tooth depth between the top.On the cross section axial perpendicular to core print main body 1, the angle between the dual-side of tooth piece 3 is 0～15 degree.
When producing inner screw thread copper pipe as mould with this core head, the tooth of the teeth groove 2 corresponding inner screw thread copper pipes of this core head, the root of tooth on the smooth transition face 4 corresponding inner screw thread copper pipes of this core head, when forming the profile of tooth of inner screw thread copper pipe, metal flow is full of the teeth groove 2 of core head easily by this smooth transition face 4, the profile of tooth that forms on the inner screw thread copper pipe is full, and is rectangular or trapezoidal, and the height of the tooth that forms is 0.23～0.28mm.Polygonal structure on full profile of tooth, higher tooth depth and the tooth (specifically refer to tooth be shaped as rectangle or trapezoidal) can increase heat exchange area, to improve the heat-transfer effect of inner screw thread copper pipe.Simultaneously, the groove bottom of the teeth groove 2 of core head also is a smooth transition with the cross surface mutually of both sides trough wall surface, is circular arc type, and this structure also helps flowing of metal flow, the profile of tooth of the feasible inner screw thread copper pipe of producing is more full, prevents that the top of inner screw thread copper pipe tooth from taking place incomplete.
Claims (6)
1, a kind of core head that is used to produce inner screw thread copper pipe, comprise core print main body (1), be opened on described core print main body (1) side external surface and along its axially extended a plurality of teeth groove (2), a plurality of described teeth groove (2) evenly distribute on described core print main body (1) side external surface, described teeth groove (2) originates in the top end face of described core print main body (1), end at the bottom face of described core print main body (1), form tooth piece (3) between the adjacent described teeth groove (2), it is characterized in that: the top end face of described tooth piece (3) is smooth transition face (4) with the cross surface mutually of side wall surface.
2, the core head that is used to produce inner screw thread copper pipe according to claim 1 is characterized in that: described smooth transition face (4) is an arc surface, and the radius of this arc surface is 0.05mm～0.09mm.
3, the core head that is used to produce inner screw thread copper pipe according to claim 1 is characterized in that: described tooth piece (3) roughly is the straight-tooth shape.
4, the core head that is used to produce inner screw thread copper pipe according to claim 1 is characterized in that: the bottom of described tooth piece (3) is 0.23～0.28mm to the height between the top.
5, the core head that is used to produce inner screw thread copper pipe according to claim 1 is characterized in that: on the cross section axial perpendicular to described core print main body (1), the angle between the dual-side extension line of described tooth piece (3) is 0～15 degree.
6, the core head that is used to produce inner screw thread copper pipe according to claim 1 is characterized in that: the groove bottom of described teeth groove (2) also is a smooth transition with the cross surface mutually of both sides trough wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820031649XU CN201168740Y (en) | 2008-01-28 | 2008-01-28 | Inner screw thread core for producing inner screw thread copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820031649XU CN201168740Y (en) | 2008-01-28 | 2008-01-28 | Inner screw thread core for producing inner screw thread copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201168740Y true CN201168740Y (en) | 2008-12-24 |
Family
ID=40207795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820031649XU Expired - Lifetime CN201168740Y (en) | 2008-01-28 | 2008-01-28 | Inner screw thread core for producing inner screw thread copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201168740Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481997A (en) * | 2014-11-19 | 2015-04-01 | 广东龙丰精密铜管有限公司 | Internal thread core head based on PVD (physical vapor deposition) surface strengthening and manufacturing method of internal thread core head |
| CN106141337A (en) * | 2016-08-25 | 2016-11-23 | 广东龙丰精密铜管有限公司 | Core head tooth top circular arc processing method and the equipment realizing the method |
-
2008
- 2008-01-28 CN CNU200820031649XU patent/CN201168740Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481997A (en) * | 2014-11-19 | 2015-04-01 | 广东龙丰精密铜管有限公司 | Internal thread core head based on PVD (physical vapor deposition) surface strengthening and manufacturing method of internal thread core head |
| CN106141337A (en) * | 2016-08-25 | 2016-11-23 | 广东龙丰精密铜管有限公司 | Core head tooth top circular arc processing method and the equipment realizing the method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170223 Address after: The street's Jiangnan Road Suzhou Jiangsu province 215400 city of Taicang City, No. 33 Patentee after: Jiangsu Canghuan Copper Industry Co.,Ltd. Patentee after: Golden Dragon Precise Copper Tube Group Inc Address before: The western suburbs of Jiangsu city in Taicang province 215400 Wu Tang Qiaodong Patentee before: Jiangsu Canghuan Copper Industry Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Inner screw thread core for producing inner screw thread copper pipe Effective date of registration: 20171204 Granted publication date: 20081224 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Jinlong Precision Copper Pipe Group Co., Ltd.|Jiangsu Canghuan Copper Industry Co.,Ltd. Registration number: 2017990001109 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081224 |
|
| CX01 | Expiry of patent term | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190814 Granted publication date: 20081224 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Jinlong Precision Copper Pipe Group Co., Ltd.|Jiangsu Canghuan Copper Industry Co., Ltd. Registration number: 2017990001109 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |