CN201969817U - Copper pipe internal thread forming device - Google Patents
Copper pipe internal thread forming device Download PDFInfo
- Publication number
- CN201969817U CN201969817U CN2010206453572U CN201020645357U CN201969817U CN 201969817 U CN201969817 U CN 201969817U CN 2010206453572 U CN2010206453572 U CN 2010206453572U CN 201020645357 U CN201020645357 U CN 201020645357U CN 201969817 U CN201969817 U CN 201969817U
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- CN
- China
- Prior art keywords
- copper pipe
- spinning ring
- screw thread
- thread core
- spinning
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- 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
A copper pipe internal thread forming device comprises a spinning ring sleeved on the outer wall of a steel pipe, a thread core arranged in the wall of the steel pipe and corresponding to the spinning ring, and a floating core fixedly connected with the thread core. The copper pipe internal thread forming device is characterized in that six steel balls in rolling contact with the outer wall of the steel pipe are evenly distributed in the spinning ring, the steel balls are spaced and in rolling contact, and the transition between the gullet and the tooth flank of the thread core is an arched surface. Since six steel balls are employed for spinning the surface of a copper, the number of deformation points is great, the forming speed is increased, the speed reaches 80m/min, and the surface quality is improved. The transition of the thread core is arched, the metal flowability is excellent, and high teeth can be obtained. The spinning ring is thin, which reduces vibration during high-speed spinning and minimizes negative influence on the surface quality of a product.
Description
Technical field
The utility model relates to a kind of shaped device of riffled tube, particularly a kind of copper pipe internal thread rotary press modelling device.
Background technology
Inner screw thread copper pipe is a kind of efficient heat conducting tube, and its heat exchange efficiency is far above smooth wall pipe, but the moulding process of internal thread is complicated, generally comprise floating core head draw dial, rotary press modelling internal thread, sizing sky draw.During the rotary press modelling internal thread, copper pipe uniform motion forward under the pulling force effect, the spin roll extrusion copper pipe outer surface of high speed rotation simultaneously, the screw thread core print that copper pipe inside is connected on the floating core head rotates automatically, make copper pipe be in approximate at a high speed oblique transverse rolling state, teeth groove on the screw thread core print makes the copper pipe inwall become profile of tooth, forms inner screw thread copper pipe.Sky draws the effect of then playing sizing and polishing outer surface.Announced a kind of copper pipe internal thread spinning apparatus at Chinese patent CN03266344.7, it adopts 5 ball spinning, though have that screw thread is not fragile, a device long service life, improve crudy, convenience operation, shaping speed is not high, the problem of surface quality difference but still exist, and shaping speed can only reach 60m/min; Product surface spinning line is obvious, in copper pipe following process process, as bend pipe, easy to crack when expanding mouth, expander, leakage.Therefore also need do further improvement to the structure of copper pipe forming internal threads device.
Summary of the invention
The utility model is to provide the internal thread rotary press modelling that a kind of inner screw thread copper pipe shaping speed is fast, surface quality is excellent device at the above-mentioned state of the art.
The technical scheme that the utility model adopted is: copper pipe forming internal threads device, comprise the spinning ring that is enclosed within the pipe outer wall, the screw thread core print relative in the tube wall with the spinning ring, and the floating core head of fixedlying connected with the screw thread core print, it is characterized in that evenly being provided with in the described spinning ring six steel balls that roll and contact with the copper pipe outer wall, band gap rolls and contacts between the described steel ball, and the teeth groove of described screw thread core print and the flank of tooth are the arc surface transition.
The beneficial effects of the utility model are: owing to adopt six ball spinning copper pipe surface, deformation point is many, has both improved shaping speed, and speed can reach 80m/min; Improve surface quality again; Screw thread core print arc transition, metal flow is good, can obtain high tooth; The thin thickness of spinning ring can reduce the vibration when rotating at a high speed, reduces the influence to product surface quality.
Description of drawings
Fig. 1 is a cutaway view of the present utility model
Fig. 2 is the A-A profile of Fig. 1
Fig. 3 is the enlarged drawing of B
The specific embodiment
Below in conjunction with accompanying drawing the utility model structure is described further
As shown in Figure 1, copper pipe forming internal threads device is made up of screw thread core print 3, spinning ring 1 and steel ball 2, and screw thread core print 3 and floating core head 5 are connected by connecting rod, and floating core head 5 is corresponding with tube reducing external mold 6.Figure 2 shows that the A-A profile of spinning ring 1 and screw thread core print 3, the thickness of spinning ring 1 is the 16-18 millimeter, six steel balls 2 that diameter is identical evenly distribute in the spinning ring 1, steel ball 2 keeps rolling contacting with spinning ring 1 inwall and copper pipe 4 outer walls, the gap is 0.01 millimeter-0.03 millimeter between the steel ball, and screw thread core print 3 is enclosed within copper pipe 4 inwalls and is tight contact.As shown in Figure 3, the teeth groove of screw thread core print 3 and the flank of tooth are the arc surface transition, and arc transition radius surface R selects between 0.05～0.08mm, can form higher thread.
As shown in Figure 1, be with floating core head 5 and screw thread core print 3 in the processed copper pipe 4, screw thread core print 3 and floating core head 5 are connected by connecting rod.After copper pipe 4 passes through the drawing tube reducing of tube reducing external mold 6 and floating core head 5 earlier, enter into the forming internal threads device, spinning ring 1 is driven by high-speed electric expreess locomotive and does rotation at a high speed, steel ball 2 in the spinning ring 1 is along with spinning ring 1 revolves round the sun around copper pipe 4, steel ball 2 produces rotation simultaneously, rotational velocity and revolution speed are complementary, and guarantee that copper pipe 4 rotates before the direction of arrow and then not.Copper pipe 4 moves with uniform velocity forward under the pulling force effect, the steel ball 2 roll extrusion copper pipe surface of high speed rotation simultaneously, the screw thread core print 3 of copper pipe inside is free to rotate, be equivalent to copper pipe 4 and be in high speed cross rolling state, metal just flow in the teeth groove of screw thread core print 3, thereby forms the internal thread flank of tooth at copper pipe 4 inwalls.Inner screw thread copper pipe after the moulding carries out sky by whole footpath external mold 7 and draws sizing.
Claims (4)
1. copper pipe forming internal threads device, comprise the spinning ring that is enclosed within the pipe outer wall, the screw thread core print relative in the tube wall with the spinning ring, and the floating core head of fixedlying connected with the screw thread core print, it is characterized in that evenly being provided with in the described spinning ring six steel balls that roll and contact with the copper pipe outer wall, band gap rolls and contacts between the described steel ball, and the teeth groove of described screw thread core print and the flank of tooth are the arc surface transition.
2. according to the described copper pipe forming internal threads of claim 1 device, it is characterized in that the gap is 0.01～0.03 millimeter between the described steel ball (2).
3. according to the described copper pipe forming internal threads of claim 1 device, it is characterized in that the teeth groove of screw thread core print (3) and the arc transition radius surface R of the flank of tooth are 0.05～0.08 millimeter.
4. according to the described copper pipe forming internal threads of claim 1 device, it is characterized in that spinning ring (1) thickness is 16～18 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206453572U CN201969817U (en) | 2010-11-26 | 2010-11-26 | Copper pipe internal thread forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206453572U CN201969817U (en) | 2010-11-26 | 2010-11-26 | Copper pipe internal thread forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201969817U true CN201969817U (en) | 2011-09-14 |
Family
ID=44574923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206453572U Expired - Lifetime CN201969817U (en) | 2010-11-26 | 2010-11-26 | Copper pipe internal thread forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201969817U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500674A (en) * | 2011-10-28 | 2012-06-20 | 昆山德泰新材料科技有限公司 | Method for manufacturing special-shaped copper pipes for heat dissipation of baseboards of computer CPU (central processing unit) modules |
| CN105880288A (en) * | 2016-05-18 | 2016-08-24 | 常州市环华机械有限公司 | Internal thread mold for cold-rolled pipe |
| CN106607472A (en) * | 2016-11-24 | 2017-05-03 | 浙江耐乐铜业有限公司 | Copper pipe internal thread forming device |
| CN108284145A (en) * | 2018-04-11 | 2018-07-17 | 宁波金田铜管有限公司 | A kind of molding machine and its application method of outsole wall thickness inner screw thread copper pipe |
| CN113305174A (en) * | 2021-05-27 | 2021-08-27 | 江苏兴荣高新科技股份有限公司 | Internal thread copper pipe or internal thread aluminum pipe and manufacturing method and production line thereof |
| CN113523454A (en) * | 2021-08-04 | 2021-10-22 | 曹县爱伦金属加工有限公司 | Movable core head of internal thread forming processing die and processing method thereof |
-
2010
- 2010-11-26 CN CN2010206453572U patent/CN201969817U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500674A (en) * | 2011-10-28 | 2012-06-20 | 昆山德泰新材料科技有限公司 | Method for manufacturing special-shaped copper pipes for heat dissipation of baseboards of computer CPU (central processing unit) modules |
| CN105880288A (en) * | 2016-05-18 | 2016-08-24 | 常州市环华机械有限公司 | Internal thread mold for cold-rolled pipe |
| CN105880288B (en) * | 2016-05-18 | 2017-11-24 | 常州市环华机械有限公司 | A kind of cold rolled tube internal thread mould |
| CN106607472A (en) * | 2016-11-24 | 2017-05-03 | 浙江耐乐铜业有限公司 | Copper pipe internal thread forming device |
| CN106607472B (en) * | 2016-11-24 | 2018-03-27 | 浙江耐乐铜业有限公司 | A kind of copper pipe internal thread forming device |
| CN108284145A (en) * | 2018-04-11 | 2018-07-17 | 宁波金田铜管有限公司 | A kind of molding machine and its application method of outsole wall thickness inner screw thread copper pipe |
| CN113305174A (en) * | 2021-05-27 | 2021-08-27 | 江苏兴荣高新科技股份有限公司 | Internal thread copper pipe or internal thread aluminum pipe and manufacturing method and production line thereof |
| CN113523454A (en) * | 2021-08-04 | 2021-10-22 | 曹县爱伦金属加工有限公司 | Movable core head of internal thread forming processing die and processing method thereof |
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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: 20110914 |