CN209408888U - A kind of cubic boron nitride manufacture arc carbon pipe shaping mould - Google Patents
A kind of cubic boron nitride manufacture arc carbon pipe shaping mould Download PDFInfo
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- CN209408888U CN209408888U CN201821158976.1U CN201821158976U CN209408888U CN 209408888 U CN209408888 U CN 209408888U CN 201821158976 U CN201821158976 U CN 201821158976U CN 209408888 U CN209408888 U CN 209408888U
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Abstract
A kind of the purpose of the utility model is to provide structures simple, at low cost, easily manufactured cubic boron nitride manufacture arc carbon pipe shaping mould, including upper die and lower die, cylindrical mandrel, pressure head and plug；Upper die and lower die are cylinder, and cavity is arranged inside；Lower die is arranged in upper mold and its cavity and the cavity of upper mold surround top and bottom be it is cylindrical, intermediate cross-section is round and bigger than top and bottom diameter cavity, rounding off at cavity diameter variation；It is cylindrical cavity, the cylindrical cavity positioning device for constituting upper mold corresponding with cylindrical upper mold above lower die cavity；Detachable connecting device is set between upper mold side wall and cylindrical cavity side wall；The cylindrical mandrel of setting and cavity coaxial line in cavity, the through-hole of plug and pressure head interior setting and cylindrical mandrel cooperation；Upper die and lower die, cylindrical mandrel, pressure head and plug surround and the consistent mold cavity of carbon tube shape.
Description
Technical field
The utility model belongs to superhard material high-pressure synthesis field, and in particular to a kind of cubic boron nitride manufacture arc carbon
Pipe shaping mould.
Background technique
Cubic boron nitride extreme hardness is only second to diamond, is the material of inserted tool.The process that cubic boron nitride is made
In, wherein have a step need will raw material and catalyst mix after be pressed into cylindric bar and be put into carbon pipe, carbon pipe electrified regulation.?
During high-temperature pressurizing, carbon tube resistor, which changes, influences the stabilization of electric current.There are metallic conduction steel ring, two in existing structure both ends
Both ends temperature is lower than centre when holding thermally conductive very fast, heating.Medium temperature is high, be easy to cause baked waist phenomenon, causes to synthesize intracavitary office
Portion's non-uniform temperature.Therefore, a kind of internal cavity can be made as cylinder, external outer diameter is shape broad in the middle small in ends
Carbon pipe, such as middle section are arc-shaped to keep middle section resistance small, and fever is few, to balance the temperature for synthesizing intracavitary portion
Carbon pipe.Nobody did the process that the carbon pipe of this shape is used to manufacture cubic boron in the past, and also nobody did this
The mold of shape carbon pipe.
Summary of the invention
The purpose of the utility model is to provide a kind of structures, and simple, at low cost, easily manufactured cubic boron nitride manufactures use
Arc carbon pipe shaping mould.
The purpose of this utility model is achieved in that a kind of cubic boron nitride manufacture arc carbon pipe formation die
Tool, including upper die and lower die, cylindrical mandrel, pressure head and plug；Upper die and lower die are cylinder, and cavity is arranged inside；Lower die is set
Set in upper mold and its cavity and the cavity of upper mold surround top and bottom be it is cylindrical, intermediate cross-section is round and diameter ratio
The big cavity in top and bottom, rounding off at cavity diameter variation；It is cylindrical cavity, cylindrical cavity and circle above the lower die cavity
The corresponding positioning device for constituting upper mold of cylindrical upper mold, upper mold lower surface and lower die cylindrical cavity following table face contact；Upper mold side wall and
Detachable connecting device is set between cylindrical cavity side wall；The cylindrical mandrel of setting and cavity coaxial line in cavity, under cylindrical mandrel
End is fixed on press bench；Plug is arranged on press bench and the upper end and cavity lower end cooperate；Pressure head is set
It sets on rampiston bar and its lower end and cavity upper end cooperates；Setting cooperates logical with cylindrical mandrel in plug and pressure head
Hole；Upper die and lower die, cylindrical mandrel, pressure head and plug surround and the consistent mold cavity of carbon tube shape.
At least one pin hole is arranged in the surface of lower die contact upper mold, the pin shaft of protrusion corresponding with pin hole is arranged in upper mold, leads to
It crosses pin shaft and pin hole realizes the positioning of upper mold lower die.
Detachable connecting device is to be threadedly coupled, and threaded hole is arranged on upper mold side wall and cylindrical cavity side wall, sets in threaded hole
Set bolt.
Plug is projection shape, the nose-circle cylinder being arranged concentrically including bottom end cylindrical body and thereon；Outside the cylindrical body of bottom end
Diameter is greater than nose-circle cylinder, nose-circle cylinder and cavity lower end corresponding matching；Lower die be arranged on the cylindrical body upper surface of bottom end and
Locating device for positioning pin is set between the cylindrical body of bottom end.
The beneficial effects of the utility model are: the both ends that produce of the utility model are thick, intermediate thin carbon pipe for cube
The manufacturing process of boron nitride, can effective balance carbon pipe temperature, avoid baked waist phenomenon.To improve the service life of carbon pipe and stand
The quality of square boron nitride.Mould structure is simple, installation is facilitated to manufacture, at low cost.Using automatic pusher, taking-up is facilitated to manufacture
Good carbon pipe.
Detailed description of the invention
Fig. 1 is the utility model embodiment 1.
Fig. 2 is Fig. 1 explosive view.
Fig. 3 is the first the carbon tube shape schematic diagram of embodiment 1.
Fig. 4 is carbon tube shape schematic diagram in second in embodiment 1.
Fig. 5 is the utility model embodiment 2.
Fig. 6 is Fig. 5 explosive view.
Fig. 7 is the first the carbon pipe schematic diagram of embodiment 2.
Fig. 8 is second of the carbon pipe schematic diagram of embodiment 2.
Fig. 9 is the utility model embodiment 3.
Figure 10 is that Fig. 9 cylinder extends pusher schematic diagram.
1 it is wherein upper mold, 2 be lower die, 3 be pressure head, 4 be plug, 5 be cylindrical mandrel, 6 be cavity, 7 be cylindrical cavity, 8 is
Cavity, 9 be press bench, 10 be piston rod, 11 be pin shaft, 12 be pin hole, 13 be support frame, 14 be pressure-bearing platform, 15 be
Cylinder, 16 be buffer spring, 17 be detachable connecting device.
Specific embodiment
As shown in Figs 1-4, a kind of cubic boron nitride manufacture arc carbon pipe shaping mould embodiment 1: including upper mold 1, under
Mould 2, cylindrical mandrel 5, pressure head 3 and plug 4.Upper mold 1 and lower die 2 are cylinder, and cavity 3 is arranged inside；Lower die 2 is arranged upper
On mould 1 and its cavity 3 and the cavity 3 of upper mold 1 surround top and bottom be it is cylindrical, intermediate cross-section is round and diameter than upper
End and the big cavity 8 in lower end, rounding off at 8 diameter change of cavity.Above the cavity 3 of lower die 1 be cylindrical cavity 7, cylindrical cavity 7 with
The corresponding positioning device for constituting upper mold 1 of cylindrical upper mold 1,1 lower surface of upper mold and 2 cylindrical cavity of lower die, 7 following table face contact；Positioning
Device can make upper mold 1 and 2 installation site of lower die correct, guarantee concentric.Setting can between 7 side wall of 1 side wall of upper mold and cylindrical cavity
Dismantling connection device.When pressure head 3 is pressed downward, upper mold 1 and lower die 2 can be made to separate to the upward reaction force of upper mold 1 by pressure material,
Setting detachable connecting device can prevent 1 lower die 2 of upper mold separate and also it is easy to disassemble separated.Setting and cavity 8 are same in cavity 8
The cylindrical mandrel 5 of axis, 5 lower end of cylindrical mandrel are fixed on press bench 9.Plug 4 is arranged on press bench 9
And the upper end and 8 lower end of cavity cooperate；Pressure head 3 is arranged on rampiston bar 10 and its lower end and 8 upper end of cavity cooperate.It is stifled
First 4 and pressure head 3 in setting with cylindrical mandrel 5 cooperate through-hole.Upper mold 1, lower die 2, cylindrical mandrel 5, pressure head 3 and plug 4 surround
With the consistent mold cavity of carbon tube shape.
It is equivalent in lower die 2 provided with stepped hole, first layer hole is cylindrical cavity 7, and the second layer is cavity 3.2 cylindrical cavity of lower die
7 at least two pin shaft 11 of lower surface setting is positioned with the pin shaft 12 in upper mold 1.Specific plug 4, pressure head 3, cylindrical mandrel 5, on
The matching relationship in aperture can have with reference to pervious cylindrical carbon control modeling between mould 1 and lower die 2.In the past in cubic boron nitride
Manufacture in, all the use of shape is cylindrical carbon pipe.Nobody expects that thick using centre, both ends are thin, diameter rounding off
Carbon pipe realizes that temperature is even by changing resistance.Needless to say the dedicated mold of manufacture produces such carbon pipe.The utility model
Mold can produce such carbon pipe, make cubic boron nitride manufacture in carbon tube temperature degree uniformly, improve service life of carbon pipe and vertical
The quality of square boron nitride.
At least one pin hole 12 is arranged in the surface that lower die 2 contacts upper mold 1, protrusion corresponding with pin hole 12 is arranged in upper mold 1
Pin shaft 11 is realized the positioning of 1 lower die 2 of upper mold by pin shaft 11 and pin hole 12, prevents from rotating between upper mold 1 and lower die 2.It can
Dismantling connection device is to be threadedly coupled, and threaded hole is arranged on 7 side wall of 1 side wall of upper mold and cylindrical cavity, bolt is arranged in threaded hole.?
It can be other devices being easy for installation and removal.
Plug 4 is projection shape, the nose-circle cylinder being arranged concentrically including bottom end cylindrical body and thereon；Outside the cylindrical body of bottom end
Diameter is greater than nose-circle cylinder, nose-circle cylinder and cavity lower end corresponding matching；Lower die 2 be arranged on the cylindrical body upper surface of bottom end and
Locating device for positioning pin is set between the cylindrical body of bottom end.The outer diameter of pressure head 3 is no more than the diameter of 8 upper end of cavity, facilitates pressure head 3
It pushes and enters cavity 8.
The sideline endpoint that the both ends of 8 longitudinal section of cavity are rectangle, both ends rectangle is ipsilateral is by circular sliding slopes.Or cavity
The cone for transition that 8 both ends are cylindrical body, among cavity to be between the biggish cylindrical body of radius, 8 both ends of cavity and air centre be
Body.The carbon pipe of formation is as shown in Figure 3 and Figure 4, and there is much the specification of carbon pipe in specific production, such as carbon pipe is 44 millimeters high, wall thickness
2.5 millimeters of maximum, minimum at 0.8 millimeter.
When it is implemented, plug 4 and cylindrical mandrel 5 are fixed on press bench 9, lower die 2 is placed into plug 4
On, 4 nose-circle cylinder of plug enters in the cavity of lower die 2.Upper mold 1 is put into the cylindrical cavity 7 of lower die 2 makes pin shaft 11 enter pin
Hole 12 positions.It is connected with 7 side wall of 1 side wall of upper mold and 2 cylindrical cavity of lower die, fixes upper and lower position between upper mold lower die.It will
The raw material of fixed weight is put into cavity 8, and press machine band dynamic head 3 is depressed into scheduled position.After the completion of compacting, pressure head 3 is moved
It opens.It takes upper mold 1 away, carbon pipe is taken out.The utility model does not need specially to make clamping tool, it is only necessary to upper die and lower die positioning
It is accurate.And mold is simple and convenient.
The mold of above-described embodiment can once produce the carbon pipe of completion.But because the outer diameter of pressure 3 is not carbon
The diameter of pipe maximum, pressure head 3 needs to push the needs that enough distances are just able to satisfy compacting in pressing process.For right up and down
The carbon pipe of title, can design and manufacture the mold of half carbon pipe.Two half carbon pipes are combined use.
As shown in Figure 5-10, a kind of molding die of symmetrical carbon pipe, including lower die 2, plug 4, cylindrical mandrel 5 and pressure head 3；
Cavity 6 is set inside lower die 2, and cavity 6 divides for upper end cavity, middle-end cavity and lower end cavity.Upper end cavity is cylindrical, middle-end
Cavity is the up big and down small centrum of outer diameter or bowl-shape cavity, lower end cavity are cylindrical, round and smooth mistake at 6 diameter change of cavity
It crosses.Upper end cavity largest outside diameter, middle-end cavity outer diameter are greater than lower end cavity.Middle-end cavity is also possible between two parallel planes
Sphere, outer diameter is up big and down small.4 outer diameter of plug and lower end cavity cooperate；3 top of pressure head is cylindrical or cuboid, pressure
First 3 lower part is the cylinder cooperated with upper end cavity, and the lower surface on 3 top of pressure head is contacted with 2 upper surface of lower die, determines pressure head
3 distances moved in cavity 6.Cylindrical core 5 mould concentric with cavity 6 is set inside cavity 6, and 5 one end of cylindrical mandrel is fixed.Pressure
First 3 and plug 4 on setting through-hole it is corresponding with cylindrical mandrel 5.In the correspondence that lower die 2, plug 4, cylindrical mandrel 5 and pressure head 3 surround
The mold cavity of any one half shape of symmetrical carbon pipe down.Plug 4 is projection shape, including bottom end cylindrical body and is set with one heart thereon
The nose-circle cylinder set；Bottom end cylindrical body outer diameter is greater than nose-circle cylinder, nose-circle cylinder and lower end cavity corresponding matching.
As shown in figs. 9-10, in a kind of molding die embodiment 3 of symmetrical carbon pipe, lower die 2 is arranged on support frame 13, branch
Opening is set on support 13, and 4 bottom end cylindrical member at one end of plug is arranged below support frame 13, and 4 other end of plug passes through support frame
Opening on 13 enters the lower end cavity of lower die 2；Pressure-bearing platform 14 is set below support frame 13, is set below 4 bottom end cylindrical body of plug
Cylinder 15 is set, is connected between 4 bottom end cylindrical body of 15 piston head of cylinder and plug by buffer spring 16；15 compressive state of cylinder
Under, plug 4 is arranged on pressure-bearing platform 14, and under 15 elongation state of cylinder, plug 4 moves up ejection carbon pipe after molding.
Pressure head 3 is arranged on moving up and down pressurizing device, such as rampiston bar 40.5 one end of cylindrical mandrel is fixed on
On pressure-bearing platform 14 or in 14 following platform of pressure-bearing platform.After the carbon pipe molding of half, because combining closely with lower die 2, and position
In in lower die, being difficult to take out.Plug 4 is set to move up and down ejection carbon pipe after molding by cylinder 15, what be can be convenient in this way takes
Walk carbon pipe.Again because plug 4 bears very big pressure, and cylinder 15 is unbearable when compacting carbon dust forms carbon pipe, so setting is held
It presents a theatrical performance as the last item on a programme and 14 bears pressure in pressing process.Because of the presence of buffer spring 16,15 compressive state lower piston head of cylinder is lower than stifled
First 4 lower surface；Cylinder 15 is solely subjected to spring force, and the pressure for being not subject to compacting will not be damaged.Under 15 elongation state of cylinder, plug
4 move rising.
Two kinds of structures of the complete carbon pipe formed after the half carbon pipe assembling that the utility model produces, such as Fig. 7 and Fig. 8 institute
Show.The mold of the utility model produces the carbon pipe of half, and the carbon pipe of two half symmetrically fits together, and constitutes complete carbon
Pipe, will not influence use.But mold is simple very much, does not need upper mold.And because pressure head lower diameter is bigger, it is equal to
Carbon pipe diameter maximum, pressing process carbon dust stress is evener, and product quality is higher.
It can also be using carbon pipe symmetrical in Fig. 9 in a kind of cubic boron nitride manufacture arc carbon pipe shaping mould embodiment 1
Molding die embodiment 3 in cylinder and buffer spring push plug 4 to move up, to release carbon pipe after molding.At this time
Fig. 9 in Fig. 1 the difference is that；Include upper mold in the embodiment 1 of Fig. 1, there is no upper mold and pressure head in the embodiment 3 of Fig. 9
Diameter and shape are different.
As seen in figs. 5-6, a kind of symmetrical carbon pipe molding die embodiment 2 and embodiment 3 the difference is that；Under
Mould 2 is arranged in the bottom end cylindrical body upper surface of plug 4 and locating device for positioning pin is arranged between the cylindrical body of bottom end.Plug 4 is set
It sets on press bench 9,5 one end of cylindrical mandrel is fixed on press bench 9.Pressure head 3 connects rampiston bar
10 with moving up and down together.Using a kind of this method, half carbon pipe after molding can not be released directly, need by lower die 2 from
After being removed on plug 4, the release of carbon pipe is taken away again from lower die lower end cavity with tool.
When it is implemented, plug is placed on pressure-bearing platform, and its lower end is connected by spring with cylinder.Lower die setting is being propped up
On support, pressure head is connected with rampiston head.The raw material of the amount of setting in advance is put into lower mode cavity body, mobile pressure head enters lower die
Until scheduled position.After the completion of compacting, pressure head is removed.Carbon tube top is gone out cavity by cylinder elongation, takes out carbon pipe.
Claims (4)
1. a kind of cubic boron nitride manufacture arc carbon pipe shaping mould, it is characterised in that: including upper die and lower die, cylindrical mandrel,
Pressure head and plug；Upper die and lower die are cylinder, and cavity is arranged inside；Lower die is arranged in upper mold and its cavity and upper mold
Cavity surround top and bottom be it is cylindrical, intermediate cross-section is round and bigger than top and bottom diameter cavity, cavity is straight
Rounding off at diameter variation；It is cylindrical cavity above the lower die cavity, cylindrical cavity composition upper mold corresponding with cylindrical upper mold
Positioning device, upper mold lower surface and lower die cylindrical cavity following table face contact；It is arranged between upper mold side wall and cylindrical cavity side wall detachable
Attachment device；The cylindrical mandrel of setting and cavity coaxial line in cavity, cylindrical mandrel lower end is fixed on press bench；It is stifled
Head is arranged on press bench and the upper end and cavity lower end cooperate；Pressure head is arranged on rampiston bar and its lower end
Cooperate with cavity upper end；The through-hole of setting and cylindrical mandrel cooperation in plug and pressure head；Upper die and lower die, cylindrical mandrel, pressure head and
Plug surrounds and the consistent mold cavity of carbon tube shape.
2. a kind of cubic boron nitride manufacture arc carbon pipe shaping mould according to claim 1, it is characterised in that: lower die connects
At least one pin hole is arranged in the surface of touching upper mold, the pin shaft of protrusion corresponding with pin hole is arranged in upper mold, real by pin shaft and pin hole
The positioning of existing upper mold lower die.
3. a kind of cubic boron nitride manufacture arc carbon pipe shaping mould according to claim 2, it is characterised in that: it is described can
Dismantling connection device is to be threadedly coupled, and threaded hole is arranged on upper mold side wall and cylindrical cavity side wall, bolt is arranged in threaded hole.
4. -3 any a kind of cubic boron nitride manufacture arc carbon pipe shaping mould according to claim 1, it is characterised in that:
The plug is projection shape, the nose-circle cylinder being arranged concentrically including bottom end cylindrical body and thereon；Bottom end cylindrical body outer diameter is big
In nose-circle cylinder, nose-circle cylinder and cavity lower end corresponding matching；Lower die be arranged on the cylindrical body upper surface of bottom end and with bottom
Locating device for positioning pin is set between the cylindrical body of end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821158976.1U CN209408888U (en) | 2018-07-21 | 2018-07-21 | A kind of cubic boron nitride manufacture arc carbon pipe shaping mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821158976.1U CN209408888U (en) | 2018-07-21 | 2018-07-21 | A kind of cubic boron nitride manufacture arc carbon pipe shaping mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209408888U true CN209408888U (en) | 2019-09-20 |
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ID=67929812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821158976.1U Active CN209408888U (en) | 2018-07-21 | 2018-07-21 | A kind of cubic boron nitride manufacture arc carbon pipe shaping mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209408888U (en) |
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2018
- 2018-07-21 CN CN201821158976.1U patent/CN209408888U/en active Active
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