CN110508724A - Tin cold compaction process in a kind of copper pipe - Google Patents
Tin cold compaction process in a kind of copper pipe Download PDFInfo
- Publication number
- CN110508724A CN110508724A CN201910614943.6A CN201910614943A CN110508724A CN 110508724 A CN110508724 A CN 110508724A CN 201910614943 A CN201910614943 A CN 201910614943A CN 110508724 A CN110508724 A CN 110508724A
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- Prior art keywords
- tin
- silk
- bath
- copper pipe
- molten
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating With Molten Metal (AREA)
Abstract
The present invention discloses tin cold compaction process in a kind of copper pipe, belongs to copper pipe production field, includes the following steps, chooses a Duan Xisi, tin silk is curled into ring-type；Tin silk after curling is put into the appearance molten tin bath of pipe fitting；Tin silk compressional deformation is filled by appearance molten tin bath using cold pressing.The mode of directly interception tin silk first is easier to control the amount of tin silk, it is set to match with the volume for holding molten tin bath, on the one hand the later period not will lead to the oxidation of tin silk by the way of cold pressing, will not be in tin silk producing bubbles inside, therefore filling quality is very high, and the yield rate of filling is higher.Additionally due to the waste of tin is seldom in Cold Extrusion Process, therefore has the dosage of tin on the one hand less compared to hot melt, the dosage of another aspect tin is more controllable, is accordingly also more favorable for automating.
Description
[technical field]
The present invention relates to tin cold compaction process in a kind of copper pipe, belong to copper pipe production field.
[background technique]
Almost all carries out filling out tin operation using the method for hot melt in the appearance molten tin bath of copper pipe, this results in asking for several aspects
Topic, tin is easy to oxidize in reflow process first, and secondly the dosage of tin is uncontrollable, causes to waste, inside the tin that secondly filling is completed
It is easy to produce bubble, causes filling quality very poor.
[summary of the invention]
There is provided technical problem to be solved by the present invention lies in overcome the deficiencies in the prior art a kind of cost it is lower, filling
Tin cold compaction process in the copper pipe of better quality.
Tin cold compaction process in a kind of copper pipe, includes the following steps,
Step is 1.: choosing a Duan Xisi, tin silk is curled into ring-type；
Step is 2.: the tin silk after curling is put into the appearance molten tin bath of pipe fitting；
Step is 3.: tin silk compressional deformation being filled appearance molten tin bath using cold pressing.
Beneficial effects of the present invention are as follows:
The mode of directly interception tin silk first is easier to control the amount of tin silk, makes it and holds the volume phase of molten tin bath
To match, on the one hand the later period not will lead to the oxidation of tin silk by the way of cold pressing, will not be in tin silk producing bubbles inside, therefore fill
It is of high quality, the yield rate of filling is higher.Additionally due to the waste of tin is seldom in Cold Extrusion Process, therefore have compared to hot melt
The dosage of tin is on the one hand less, and the dosage of another aspect tin is more controllable, is accordingly also more favorable for automating.
Step of the present invention 1. in, tin silk use servo feeding, to choose the tin silk of fixed length.
Step of the present invention 2. in, cricoid locating slot is offered on the outer wall of positioning core axle, tin silk is stuck in locating slot, fixed
Position mandrel drives tin silk to enter in pipe fitting, when locating slot is moved at appearance molten tin bath, controls tin silk from locating slot and is moved to appearance molten tin bath
It is interior.
Step of the present invention 2. in, retention bead is provided on positioning core axle, when locating slot be moved to hold molten tin bath at when, limit
Raised support is in the end of pipe fitting.
Step of the present invention 2. in, locating slot is moved to when holding at molten tin bath, is provided at locating slot radially movable along molten tin bath is held
Movable push, movable push is radially located at the inside of tin silk holding molten tin bath, pushes movable push so that tin silk is from positioning
Slot is moved to appearance molten tin bath.
Step of the present invention 2. in, movable push quantity has multiple, and all movable push are along circumferentially distributed, all work of holding molten tin baths
The centre of dynamic push plate is provided with control-rod, and the outer wall of control-rod is bonded with all movable push, is existed with controlling all movable push
Hold molten tin bath axially towards outer movement.
Step of the present invention 2. in, the opposite axially inclined setting for holding molten tin bath of the outer wall of control-rod.
Step of the present invention 3. in, tin silk is squeezed by idler wheel, so that tin silk shape is matched with appearance molten tin bath.
It is 1.05-1.15 that the present invention, which holds the ratio between molten tin bath volume and tin filament product,.
The other features and advantages of the invention will the detailed exposure in following specific embodiment, attached drawing.
[Detailed description of the invention]
Following further describes the present invention with reference to the drawings:
Fig. 1 is straight tube schematic diagram of main cross-sectional structure of the embodiment of the present invention；
Fig. 2 is tee tube schematic diagram of main cross-sectional structure of the embodiment of the present invention；
Fig. 3 is bend pipe schematic diagram of main cross-sectional structure of the embodiment of the present invention；
Fig. 4 is the flow chart of tin cold compaction process in the copper pipe of the embodiment of the present invention；
Fig. 5 is the flow chart of tin melt process in the copper pipe of comparative example of the present invention；
Fig. 6 be in Fig. 5 A-A to schematic cross-sectional view.
[specific embodiment]
The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but under
It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art
Obtained other embodiments without making creative work, belong to protection scope of the present invention.
In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or
Positional relationship description embodiment merely for convenience and simplified description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Embodiment:
Referring to Fig. 1-4, embodiment shows tin cold compaction process in a kind of copper pipe, the scope of application includes but is not limited to
Straight tube, tee tube and bend pipe.Specifically, tin cold compaction process includes the following steps in copper pipe.
Step is 1.: choosing a Duan Xisi 2, tin silk 2 is curled into ring-type；
Preferably, tin silk 2 is given using servo, and the length to ensure tin silk 2 is accurately adjustable, is convenient for later period industry metaplasia
It produces, such as the pipe fitting 4 in the present embodiment for the same specification of same batch is filled tin, so every tin for choosing regular length
It is cut off after silk 2, so that the volume of each section of tin silk 2 and its 1 volume of appearance molten tin bath to be filled be made to match.
Step is 2.: the tin silk 2 after curling is put into the appearance molten tin bath 1 of pipe fitting 4；
Tin silk 2 is placed into that hold one of method of molten tin bath 1 be the wherein outer wall of positioning core axle 3 using positioning core axle 3
On offer cricoid locating slot, step 1. in, be moved in locating slot in 2 curly course of tin silk, utilize the side wall of locating slot
Tin silk 2 is positioned, so that tin silk 2 be made to be stuck in locating slot, then positioning core axle 3 drives tin silk 2 axial to pipe along pipe fitting 4
It moves inside part 4, holds at molten tin bath 1 until locating slot and the tin silk 2 in locating slot are moved to, control tin silk 2 from locating slot
It is moved to and holds in molten tin bath 1.
The pipe fitting 4 of same specification is filled in view of being in the present embodiment, so in 4 axial direction of pipe fitting, pipe fitting 4
End and the spacing for holding molten tin bath 1 are definite value.So retention bead 5 is provided on positioning core axle 3, when locating slot is moved to appearance molten tin bath
When at 1, retention bead 5 is supported in the end of pipe fitting 4, the relative position held between molten tin bath 1 and locating slot by 5 Duis of retention bead
It is fixed, is held in molten tin bath 1 with facilitating for tin silk 2 to be transferred to from locating slot.
Hold the annular groove that molten tin bath 1 is standard, locating slot is that diameter is slightly less than the annular groove for holding molten tin bath 1, and locating slot moves
It moves to when holding at molten tin bath 1, holds molten tin bath 1 and locating slot is arranged concentrically.Movable push 6 is movably set on positioning core axle 3, when appearance tin
When slot 1 and locating slot are arranged concentrically, activity direction of the movable push 6 on positioning core axle 3 is the radial direction for holding molten tin bath 1.It is corresponding fixed
It is offered on the mandrel 3 of position and carries out mobile loose slot for movable push 6, the movement using the side wall of loose slot to movable push 6
Direction is limited.Furthermore the loose slot is connected to locating slot, thus make tin silk 2 in locating slot when by mobile movable push
6 contact movable push 6 with tin silk 2, push tin silk 2 radially from locating slot in appearance molten tin bath 1 to using movable push 6 to hold molten tin bath
1, it is limited using the activity direction of movable push 6 direction mobile to tin silk 2, it is ensured that be aligned and hold in 2 transfer process of tin silk
Molten tin bath 1.Accordingly holding molten tin bath 1 radially, tin silk 2, which is located at, to be held between molten tin bath 1 and movable push 6, and movable push 6 is remote in tin silk 2
Tin silk 2 is pushed from the side for holding molten tin bath 1.
Single-unit activity push plate 6 can only push a bit of of tin silk 2, and one side transfer efficiency is lower, on the other hand
It needs successively to push the different parts of tin silk 2, causes to interfere between each pushing course, it is possible to influence tin silk
2 transfer quality.
Thus in the present embodiment 6 quantity of movable push be provided with it is multiple, all movable push 6 along hold molten tin bath 1 it is circumferentially distributed,
The centre of all movable push 6 is provided with control-rod 7, and the outer wall of control-rod 7 is bonded with all movable push 6, all to control
Movable push 6 is holding molten tin bath 1 axially towards outer movement.
Since the outer wall of control-rod 7 is bonded with all movable push 6, so control-rod 7 can drive all movable push 6
It is moved radially outward simultaneously along appearance molten tin bath 1, to push the part as much as possible of tin silk 2 mobile simultaneously towards molten tin bath 1 is held.
If the outer wall of control-rod 7 in the present embodiment is tilted with respect to 4 axis of pipe fitting, respective activity push plate 6 is bonded with control-rod 7
Side wall also tilted with respect to 4 axis of pipe fitting, therefore control-rod 7 along pipe fitting 4 is axial moved into pipe fitting 4 when, be able to drive work
Dynamic push plate 6 is moved radially along molten tin bath 1 is held.
Step is 3.: positioning core axle 3 and control-rod 7 being taken out out of pipe fitting 4, tin silk 2, which stays in, to be held in molten tin bath 1, is used at this time
Cold pressing is by 2 compressional deformation of tin silk, so that the shape of tin silk 2 and the shape for holding molten tin bath 1 are as consistent as possible, holds molten tin bath 1 to fill.
Such as in the present embodiment, tin silk 2 is squeezed by idler wheel 8, tin silk 2 is located at the part for holding 1 outside of molten tin bath by idler wheel 8
It squeezes to holding in molten tin bath 1, so that 2 shape of tin silk, which is matched with, holds molten tin bath 1.Idler wheel 8 is rolled along the circumferential direction for holding molten tin bath 1, is rolled
Wheel 8 is controlled by idler wheel mandrel 9, drives idler wheel 8 mobile by idler wheel mandrel 9.
In view of the loss very little of tin silk 2 in cold pressure procedure, or even almost without consume, so in only needing to guarantee step 1.
2 volume of tin silk of interception is slightly larger than appearance 1 volume of molten tin bath.
Preferably, holding the ratio between 1 volume of molten tin bath and 2 volume of Xi Si is 1.05-1.15.
2 surface quality of tin silk after the completion of filling is high, the bad defect such as pore-free, shrinkage cavity, wall built-up, when successive projects are constructed
Qualification rate is high, saves 25% or more compared to 2 dosage of hot melting process tin silk, energy consumption saves 20% or more.Entire production process simultaneously
In the size and ovality of 4 nozzle of pipe fitting are required lower, only require precision controlling in 0.2mm or so.
Comparative example:
Referring to 5-6, this comparative example carries out filling out tin using the method for hot melt to copper pipe content molten tin bath 1.
Specific step is as follows:
Step is 1.: choosing one block of tin slab 10 or tin bar；
Step is 2.: by smelting electrical furnace 11 by above-mentioned tin slab 10 or tin bar heat fusing, forming soldering tin 12；Wherein melt
The bottom for melting tin liquor 12 is piston rod 13, and the top of smelting electrical furnace 11 is tin liquor pipeline 14, pushes soldering tin by piston rod 13
12 is mobile to tin liquor pipeline 14；
Step is 3.: choosing a filling mold 15, filling mold 15 covers the end for being bonded to pipe fitting 4, fills the top of mold 15
It also is tin liquor pipeline 14, soldering tin 12 is filled mold 15 via the flow direction of tin liquor pipeline 14 of smelting electrical furnace 11 by piston rod 13
The bottom of tin liquor pipeline 14, filling mold 15 is located in pipe fitting 4, and cavity filling tube road 16, cavity filling tube road are offered on the side wall of pipe fitting 4
16 quantity have it is multiple, all cavity filling tube roads 16 along hold molten tin bath 1 it is circumferentially distributed, the both ends in cavity filling tube road 16 are respectively communicated to hold
The tin liquor pipeline 14 of molten tin bath 1 and filling mold 15, the tin liquor pipeline 14 for filling mold 15 are defeated to molten tin bath 1 is held via cavity filling tube road 16
Soldering tin 12 is sent, the filling of soldering tin 12 is held in molten tin bath 1；
Step is 4.: removing filling mold 15, cools down soldering tin 12 gradually.
This comparative example method requires height to the size and ovality of 4 nozzle of pipe fitting, and precision needs to control in 0.1mm
Hereinafter, furthermore the cooling and shaping of soldering tin 12 rear surface is of poor quality, there is the defects of stomata, shrinkage cavity, wall built-up, lead to successive projects
Scrappage is high when construction, and phenomenon of doing over again is serious, and big with tin amount, and oxidation is serious, and energy consumption is high.
Embodiment data compared with comparative example is with tin amount are as shown in table 1.
Table 1
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to attached drawing and interior described in specific embodiment above
Hold.Any modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (9)
1. tin cold compaction process in a kind of copper pipe, it is characterised in that: include the following steps,
Step is 1.: choosing a Duan Xisi, tin silk is curled into ring-type；
Step is 2.: the tin silk after curling is put into the appearance molten tin bath of pipe fitting；
Step is 3.: tin silk compressional deformation being filled appearance molten tin bath using cold pressing.
2. tin cold compaction process in copper pipe according to claim 1, it is characterised in that: step 1. in, tin silk is sent using servo
Material, to choose the tin silk of fixed length.
3. tin cold compaction process in copper pipe according to claim 1, it is characterised in that: step 2. in, the outer wall of positioning core axle
On offer cricoid locating slot, tin silk is stuck in locating slot, positioning core axle drive tin silk enter in pipe fitting, locating slot is moved to
When holding at molten tin bath, control tin silk is moved to from locating slot to be held in molten tin bath.
4. tin cold compaction process in copper pipe according to claim 3, it is characterised in that: step 2. in, be arranged on positioning core axle
There is retention bead, when locating slot, which is moved to, to be held at molten tin bath, retention bead is supported in the end of pipe fitting.
5. tin cold compaction process in copper pipe according to claim 3, it is characterised in that: step 2. in, locating slot is moved to appearance
It is provided with when at molten tin bath, at locating slot along the radially movable movable push of molten tin bath is held, movable push is radially located in appearance molten tin bath
The inside of tin silk pushes movable push so that tin silk is moved to appearance molten tin bath from locating slot.
6. tin cold compaction process in copper pipe according to claim 5, it is characterised in that: step 2. in, movable push quantity has
Multiple, molten tin bath is circumferentially distributed, and the centre of all movable push is provided with control-rod, the outer wall of control-rod along holding for all movable push
It is bonded with all movable push, is holding molten tin bath axially towards outer movement to control all movable push.
7. tin cold compaction process in copper pipe according to claim 6, it is characterised in that: step 2. in, the outer wall phase of control-rod
Axially inclined setting to molten tin bath is held.
8. tin cold compaction process in copper pipe according to claim 1, it is characterised in that: step 3. in, by idler wheel by tin silk
It squeezes, so that tin silk shape is matched with appearance molten tin bath.
9. tin cold compaction process in copper pipe according to claim 1, it is characterised in that: hold the ratio between molten tin bath volume and tin filament product
For 1.05-1.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614943.6A CN110508724B (en) | 2019-07-09 | 2019-07-09 | Cold pressing method for tin in copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614943.6A CN110508724B (en) | 2019-07-09 | 2019-07-09 | Cold pressing method for tin in copper pipe |
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| Publication Number | Publication Date |
|---|---|
| CN110508724A true CN110508724A (en) | 2019-11-29 |
| CN110508724B CN110508724B (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910614943.6A Active CN110508724B (en) | 2019-07-09 | 2019-07-09 | Cold pressing method for tin in copper pipe |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2106215C1 (en) * | 1997-03-05 | 1998-03-10 | Акционерное общество открытого типа "Каменск-Уральский завод по обработке цветных металлов" | Method for production of copper long blank |
| CN2586043Y (en) * | 2001-09-24 | 2003-11-12 | 珠海凯达新材料研究所有限公司 | Tube with convex ring on its end |
| CN2607221Y (en) * | 2003-03-19 | 2004-03-24 | 新疆特变电工股份有限公司 | Cold pressing copper tube and cold pressing mould for welding transformer lead wire |
| CN2653266Y (en) * | 2003-07-08 | 2004-11-03 | 王宗宏 | Wire insert type pipeline connector |
| CN202811294U (en) * | 2012-05-29 | 2013-03-20 | 上海日立电器有限公司 | Connecting pipe for connecting joint of refrigeration compressor |
| CN202814189U (en) * | 2012-09-27 | 2013-03-20 | 合肥天鹅制冷科技有限公司 | Heat exchanger |
| CN106541206A (en) * | 2016-11-18 | 2017-03-29 | 绥阳县耐环铝业有限公司 | Evaporator of electric refrigerator Cu-AL pipe is colded pressing Welding |
| CN207743404U (en) * | 2017-12-19 | 2018-08-17 | 上海晗普新材料科技有限公司 | A kind of pyrocondensation centre crimp type terminal with tin ring |
-
2019
- 2019-07-09 CN CN201910614943.6A patent/CN110508724B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2106215C1 (en) * | 1997-03-05 | 1998-03-10 | Акционерное общество открытого типа "Каменск-Уральский завод по обработке цветных металлов" | Method for production of copper long blank |
| CN2586043Y (en) * | 2001-09-24 | 2003-11-12 | 珠海凯达新材料研究所有限公司 | Tube with convex ring on its end |
| CN2607221Y (en) * | 2003-03-19 | 2004-03-24 | 新疆特变电工股份有限公司 | Cold pressing copper tube and cold pressing mould for welding transformer lead wire |
| CN2653266Y (en) * | 2003-07-08 | 2004-11-03 | 王宗宏 | Wire insert type pipeline connector |
| CN202811294U (en) * | 2012-05-29 | 2013-03-20 | 上海日立电器有限公司 | Connecting pipe for connecting joint of refrigeration compressor |
| CN202814189U (en) * | 2012-09-27 | 2013-03-20 | 合肥天鹅制冷科技有限公司 | Heat exchanger |
| CN106541206A (en) * | 2016-11-18 | 2017-03-29 | 绥阳县耐环铝业有限公司 | Evaporator of electric refrigerator Cu-AL pipe is colded pressing Welding |
| CN207743404U (en) * | 2017-12-19 | 2018-08-17 | 上海晗普新材料科技有限公司 | A kind of pyrocondensation centre crimp type terminal with tin ring |
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| CN110508724B (en) | 2020-11-10 |
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