CN211052392U - Copper pipe and positioning core shaft for cold pressing of tin wires in copper pipe - Google Patents
Copper pipe and positioning core shaft for cold pressing of tin wires in copper pipe Download PDFInfo
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- CN211052392U CN211052392U CN201921068260.7U CN201921068260U CN211052392U CN 211052392 U CN211052392 U CN 211052392U CN 201921068260 U CN201921068260 U CN 201921068260U CN 211052392 U CN211052392 U CN 211052392U
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- cold pressing
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Abstract
The utility model discloses a copper pipe and to copper intraductal tin silk location dabber of colding pressing belongs to copper pipe production field, and the inner wall of copper pipe is equipped with annular appearance molten tin bath, holds the molten tin bath intussuseption and is filled with the tin silk, and the shape of tin silk matches with holding the molten tin bath shape, and the tin silk assembly of colding pressing is in holding the molten tin bath, and the ratio of holding molten tin bath volume and tin silk volume is 1.05-1.15. The tin wire is filled into the tin containing groove in a cold pressing mode, the loss of the tin wire is very small, and the tin consumption in the whole cold pressing process is easier to control. And the time consumption of the cold pressing process is less, the energy consumption is less, the pollution generated correspondingly is less, and the automatic production is more facilitated. The tin wire is not easy to oxidize in the cold pressing process, and bubbles can not be generated in the tin wire, so that the filling quality is high, and the filling yield is high.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a copper pipe and to copper intraductal tin silk location dabber of colding pressing belongs to copper pipe production field.
[ background of the invention ]
Tin filling operation is almost completely carried out in a tin containing groove of a copper pipe by adopting a hot melting method, so that the problems of several aspects are caused, firstly, tin is easy to oxidize in the hot melting process, secondly, the consumption of tin is uncontrollable, so that waste is caused, and secondly, bubbles are easy to generate in the filled tin, so that the filling quality is poor.
[ Utility model ] content
The utility model aims to solve the technical problem that overcome prior art not enough and provide a production method simpler, the lower copper pipe of cost and to the positioning core axle that tin silk carries out colding pressing in the copper pipe.
A copper pipe is characterized in that an annular tin containing groove is formed in the inner wall of the copper pipe, a tin wire is filled in the tin containing groove, the shape of the tin wire is matched with that of the tin containing groove, the tin wire is assembled in the tin containing groove in a cold pressing mode, and the volume ratio of the tin containing groove to the tin wire is 1.05-1.15.
The utility model has the advantages as follows:
the tin wire is filled into the tin containing groove in a cold pressing mode, the loss of the tin wire is very small, and the tin consumption in the whole cold pressing process is easier to control. And the time consumption of the cold pressing process is less, the energy consumption is less, the pollution generated correspondingly is less, and the automatic production is more facilitated. The tin wire is not easy to oxidize in the cold pressing process, and bubbles can not be generated in the tin wire, so that the filling quality is high, and the filling yield is high.
The utility model discloses hold the copper pipe outer wall of molten tin bath department towards holding the radial outside protrusion of molten tin bath.
The utility model provides a location dabber to tin silk in copper pipe carries out colding pressing, set up annular constant head tank on the location dabber outer wall, the constant head tank is used for holding the tin silk.
Be provided with spacing arch on the positioning core axle, the interval equals copper pipe tip and holds interval between the molten tin bath between constant head tank and the spacing arch.
Constant head tank department is provided with the activity push pedal along radial activity, and the activity push pedal radially lies in the inboard of tin silk at the constant head tank, promotes the activity and is used for removing the tin silk to holding the molten tin bath from the constant head tank.
The utility model discloses activity push pedal quantity has a plurality ofly, and all activity push pedals distribute along constant head tank circumference, and the centre of all activity push pedals is provided with the control lever, the outer wall and all activity push pedal laminating of control lever to control all activity push pedals and radially outwards remove at the constant head tank.
The axial slope setting of the relative constant head tank of outer wall of control lever.
Other features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention will be further explained with reference to the drawings:
fig. 1 is a schematic view of a straight pipe cross-sectional structure in a front view according to an embodiment of the present invention;
fig. 2 is a schematic view of a main sectional structure of a three-way pipe in an embodiment of the present invention;
fig. 3 is a schematic sectional view of the elbow pipe according to the embodiment of the present invention;
fig. 4 is a flow chart of a cold-pressing method of tin in a copper pipe according to an embodiment of the present invention;
FIG. 5 is a flow chart of a method for melting tin in a copper tube according to a comparative example of the present invention;
fig. 6 is a schematic sectional view along the direction of a-a in fig. 5.
[ detailed description ] embodiments
The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
In the following description, the appearances of the indicating orientation or positional relationship, such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are only for convenience in describing the embodiments and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
Example (b):
referring to fig. 1-4, this example illustrates a cold pressing method of tin in copper tubes, which is applicable to, but not limited to, straight tubes, tee tubes, and bent tubes. Specifically, the cold pressing method of tin in the copper tube comprises the following steps.
preferably, the tin wire 2 is fed by a servo system, so as to ensure that the length of the tin wire 2 is accurately adjustable, and the subsequent industrial production is facilitated, for example, in the embodiment, tin is filled into the same batch of pipe fittings 4 with the same specification, so that the tin wire 2 is cut off after selecting the tin wire 2 with the fixed length, and the volume of each section of the tin wire 2 is matched with the volume of the tin containing tank 1 to be filled.
one of them method that tin silk 2 placed the entering and hold molten tin bath 1 is for using positioning core shaft 3, wherein seted up annular constant head tank on positioning core shaft 3's the outer wall, in step ①, 2 curling in-process of tin silk moves to in the constant head tank, utilize the lateral wall of constant head tank to fix a position tin silk 2, thereby make 2 cards of tin silk in the constant head tank, then positioning core shaft 3 drives 2 inside removal of tin silk along 4 axial of pipe fitting to 4 pipe fittings, move to holding molten tin bath 1 department until constant head tank and the tin silk 2 that is located the constant head tank, control 2 moves to holding molten tin bath 1 from the constant head tank.
In this embodiment, the distance between the end of the pipe 4 and the tin containing groove 1 is constant in the axial direction of the pipe 4, considering that the pipe 4 of the same specification is filled. Therefore, the positioning mandrel 3 is provided with the limiting bulges 5, when the positioning groove moves to the position of the tin containing groove 1, the limiting bulges 5 are supported at the end parts of the pipe fittings 4, and the relative positions of the tin containing groove 1 and the positioning groove are fixed through the limiting bulges 5, so that the tin wire 2 is conveniently transferred into the tin containing groove 1 from the positioning groove.
Hold molten tin bath 1 and be the annular groove of standard, the constant head tank is slightly less than the annular groove who holds molten tin bath 1 for the diameter, and when the constant head tank removed to holding molten tin bath 1 department, hold molten tin bath 1 and the concentric setting of constant head tank. The movable push plate 6 is movably arranged on the positioning core shaft 3, and when the tin bath 1 and the positioning groove are concentrically arranged, the movable push plate 6 moves on the positioning core shaft 3 in the radial direction of the tin bath 1. A movable groove for moving the movable push plate 6 is formed in the corresponding positioning mandrel 3, and the moving direction of the movable push plate 6 is limited by the side wall of the movable groove. In addition, the movable groove is communicated to the positioning groove, so that the tin wire 2 is in contact with the tin wire 2 through the movable push plate 6 when moving in the positioning groove, the tin wire 2 is pushed to the tin containing groove 1 from the positioning groove in the radial direction of the tin containing groove 1 by the movable push plate 6, the moving direction of the movable push plate 6 is utilized to limit the moving direction of the tin wire 2, and the tin containing groove 1 is aligned in the transfer process of the tin wire 2. Correspondingly, the tin wire 2 is positioned between the tin containing groove 1 and the movable push plate 6 in the radial direction of the tin containing groove 1, and the movable push plate 6 pushes the tin wire 2 at one side of the tin wire 2 far away from the tin containing groove 1.
The single movable push plate 6 can only push a small section of the tin wire 2, on one hand, the transfer efficiency is low, on the other hand, different parts of the tin wire 2 need to be pushed successively, so that mutual interference between pushing processes at each time is caused, and the transfer quality of the tin wire 2 can be possibly influenced.
For this reason movable push pedal 6 quantity is provided with a plurality ofly in this embodiment, and all movable push pedals 6 are along holding 1 circumference distribution of molten tin bath, and the centre of all movable push pedals 6 is provided with control lever 7, and the outer wall of control lever 7 is laminated with all movable push pedals 6 to control all movable push pedals 6 and radially outwards move holding molten tin bath 1.
Because the outer wall of the control rod 7 is attached to all the movable push plates 6, the control rod 7 can drive all the movable push plates 6 to move outwards along the radial direction of the tin containing groove 1 simultaneously so as to push the tin wire 2 to move towards the tin containing groove 1 as many as possible.
Like the relative pipe fitting 4 axis slope of the outer wall of control lever 7 in this embodiment, the corresponding movable push pedal 6 also inclines relative pipe fitting 4 axis with the lateral wall of the laminating of control lever 7, therefore control lever 7 can drive movable push pedal 6 along holding tin bath 1 radial displacement when moving to pipe fitting 4 along pipe fitting 4 axial.
And ③, taking the positioning core shaft 3 and the control rod 7 out of the pipe fitting 4, keeping the tin wire 2 in the tin containing groove 1, and extruding and deforming the tin wire 2 by cold pressing at the moment to ensure that the shape of the tin wire 2 is consistent with that of the tin containing groove 1 as much as possible, so as to fill the tin containing groove 1.
For example, in the present embodiment, the tin wire 2 is extruded by the roller 8, and the roller 8 extrudes the portion of the tin wire 2 located outside the tin containing tank 1 into the tin containing tank 1, so that the shape of the tin wire 2 is matched with the tin containing tank 1. The roller 8 rolls along the circumferential direction of the tin containing groove 1, the roller 8 is controlled by the roller mandrel 9, and the roller mandrel 9 drives the roller 8 to move.
Since the tin wire 2 is worn very little or even hardly in the cold pressing process, it is only necessary to ensure that the volume of the tin wire 2 intercepted in the step ① is slightly larger than the volume of the tin-containing tank 1.
Preferably, the ratio of the volume of the tin containing groove 1 to the volume of the tin wire 2 is 1.05-1.15.
The filled tin wire 2 has high surface quality, no bad defects of air holes, shrinkage holes, wall hanging and the like, high qualification rate in subsequent engineering construction, and saves more than 25 percent of the using amount of the tin wire 2 and more than 20 percent of energy consumption compared with a hot melting process. Meanwhile, the requirements on the size and the ovality of the pipe orifice of the pipe fitting 4 in the whole production process are lower, and the precision is only required to be controlled to be about 0.2 mm.
Comparative example:
referring to fig. 5 to 6, the comparative example fills the copper tube-in-tin bath 1 with tin by a hot melting method.
The method comprises the following specific steps:
①, selecting a tin ingot 10 or a tin bar;
②, melting the tin ingot 10 or the tin bar by the electric melting furnace 11 to form molten tin 12, wherein the bottom of the molten tin 12 is a piston rod 13, the top of the electric melting furnace 11 is a tin pipeline 14, and the molten tin 12 is pushed by the piston rod 13 to move towards the tin pipeline 14;
step ③, selecting a filling mold 15, covering the filling mold 15 to the end of the pipe fitting 4, wherein the top of the filling mold 15 is also provided with a tin liquid pipeline 14, a piston rod 13 flows the molten tin liquid 12 to the tin liquid pipeline 14 of the filling mold 15 through the tin liquid pipeline 14 of the electric melting furnace 11, the bottom of the filling mold 15 is positioned in the pipe fitting 4, the side wall of the pipe fitting 4 is provided with a plurality of filling pipelines 16, all the filling pipelines 16 are distributed along the circumferential direction of the tin containing groove 1, two ends of each filling pipeline 16 are respectively communicated to the tin liquid pipeline 14 of the tin containing groove 1 and the filling mold 15, the tin liquid pipeline 14 of the filling mold 15 conveys the molten tin liquid 12 to the tin containing groove 1 through the filling pipelines 16, and the molten tin liquid 12 is filled in the tin containing groove 1;
at step ④, the filled mold 15 is removed and the molten tin 12 is allowed to cool gradually.
The method of the comparative embodiment has high requirements on the size and the ovality of the pipe orifice of the pipe fitting 4, the precision needs to be controlled below 0.1mm, and the molten tin 12 is poor in surface quality after being cooled and formed, and has the defects of air holes, shrinkage cavities, wall hanging and the like, so that the rejection rate is high during subsequent engineering construction, the rework phenomenon is serious, the tin consumption is large, the oxidation is serious, and the energy consumption is high.
The comparative tin amount data of the examples and comparative examples are shown in Table 1.
TABLE 1
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (7)
1. A copper pipe, its characterized in that: the inner wall of the copper pipe is provided with an annular tin containing groove, a tin wire is filled in the tin containing groove, the shape of the tin wire is matched with that of the tin containing groove, the tin wire is assembled in the tin containing groove in a cold pressing mode, and the volume ratio of the tin containing groove to the tin wire is 1.05-1.15.
2. The copper tube of claim 1, wherein: the outer wall of the copper pipe at the position of the tin containing groove protrudes towards the radial outer side of the tin containing groove.
3. A positioning mandrel for cold pressing of tin wires in copper tubes according to claim 1 or 2, characterized in that: and the outer wall of the positioning mandrel is provided with an annular positioning groove, and the positioning groove is used for accommodating a tin wire.
4. The positioning mandrel for cold pressing of the tin wire in the copper pipe as claimed in claim 3, wherein: the positioning mandrel is provided with a limiting bulge, and the distance between the positioning groove and the limiting bulge is equal to the distance between the end part of the copper pipe and the tin containing groove.
5. The positioning mandrel for cold pressing of the tin wire in the copper pipe as claimed in claim 3, wherein: the locating slot is provided with a movable push plate which moves along the radial direction, the movable push plate is radially positioned on the inner side of the tin wire at the locating slot, and the movable push plate is used for pushing the tin wire to move from the locating slot to the tin containing slot.
6. The positioning mandrel for cold pressing of the tin wire in the copper pipe as claimed in claim 5, wherein: the activity push pedal quantity has a plurality ofly, and all activity push pedals distribute along constant head tank circumference, and the centre of all activity push pedals is provided with the control lever, and the outer wall and all the laminating of activity push pedals of control lever move outwards in the constant head tank footpath to control all activity push pedals.
7. The positioning mandrel for cold pressing of the tin wire in the copper pipe as claimed in claim 6, wherein: the outer wall of the control rod is arranged obliquely relative to the axial direction of the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921068260.7U CN211052392U (en) | 2019-07-09 | 2019-07-09 | Copper pipe and positioning core shaft for cold pressing of tin wires in copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921068260.7U CN211052392U (en) | 2019-07-09 | 2019-07-09 | Copper pipe and positioning core shaft for cold pressing of tin wires in copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211052392U true CN211052392U (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921068260.7U Active CN211052392U (en) | 2019-07-09 | 2019-07-09 | Copper pipe and positioning core shaft for cold pressing of tin wires in copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211052392U (en) |
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2019
- 2019-07-09 CN CN201921068260.7U patent/CN211052392U/en active Active
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