CN202045717U - Ceramic blank dry press forming die based on electromagnetism technical principle - Google Patents
Ceramic blank dry press forming die based on electromagnetism technical principle Download PDFInfo
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- CN202045717U CN202045717U CN2011201084701U CN201120108470U CN202045717U CN 202045717 U CN202045717 U CN 202045717U CN 2011201084701 U CN2011201084701 U CN 2011201084701U CN 201120108470 U CN201120108470 U CN 201120108470U CN 202045717 U CN202045717 U CN 202045717U
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Abstract
The utility model relates to a ceramic blank dry press forming die based on the electromagnetism technical principle , which belongs to the field of ceramic forming and resolves the problem that an existing ceramic forming die is difficult to demould in use. The ceramic blank dry press forming die comprises a die cushion, a female die and an upper punch which are sequentially sleeved to be combined for use. The technical scheme includes that the female die consists of two grooved parts, and the forming die further comprises a hexagonal frame and two rodlike objects. Two holes are arranged at a pair of opposite corners of the hexagonal frame respectively, one end of each of the two rodlike objects is connected with the grooved parts respectively, the other ends of the two rodlike objects penetrate into or through the two holes respectively, the hexagonal frame and the rodlike objects are made of magnetic conductive materials, and excitation coils are wound on two sides, with a line between the two holes as a boundary, of the hexagonal frame. Rapid opening and closing under electrical control can be realized by means of the ceramic blank dry press forming die based on the electromagnetism technical principle.
Description
Technical field
The utility model relates to a kind of dry-pressing formed mould of ceramic batch that relies on the electromagnetic technique principle, belongs to B28B forming process of ceramics field.
Background technology
Powder is carried out the dry method compression molding, is a kind of high-efficient molding method, and this method is widely used in the research and development experimental work of enterprise's production and related scientific research department.
This case designer is in carrying out the research and development experimentation of a relevant silicon carbide ceramics; notice; there is a kind of defective in employed shaping dies; this defective shows as demoulding difficulty after the blank moulding; this problem becomes obvious further along with the prolongation of shaping dies operating period; trace it to its cause; be due to the high rigidity of carborundum; because the hardness of carborundum is only second to diamond; in the process of compression molding; wall to the former inwall forms strong scraping action; how long do not disappear; the wall of former inwall is just by the one deck of shooting off; zone in briquetting pressure effect maximum; the zone between die-cushion and upper punch just; the wall of former inwall is deeper planed; and and then form one the circle depressed area; blank sample blocks after pressure forming is embedded in this zone and is difficult to the demoulding, and in this case, the demoulding will cause blank sample blocks elephant skin by force; broken; scrap; and; the demoulding also can make the sample piece of former inwall take off by force to be subjected to related serious grinding by way of the zone, to form horn mouth by force, scraps fast to former eventually; because the powerful planing effect that the high rigidity of carborundum is brought makes the problems referred to above thorny a bit.
The utility model content
Technical problem to be solved in the utility model is at demoulding difficulty phenomenon after the above-mentioned blank moulding, to research and develop a kind of ceramic blank forming die that is easy to the demoulding.
The utility model solve the technical problem by following scheme, this scheme provides a kind of dry-pressing formed mould of ceramic batch that relies on the electromagnetic technique principle, this mould comprises the die-cushion that mutual sheathing in regular turn is used in combination, and, former, and, upper punch, described former is cylindric thing, described upper punch is that an end places and is used for cylinder that the powder sample is exerted pressure in the negative impression, described die-cushion is to place interior the exerting pressure with upper punch of negative impression to hold locational in opposite directions circular plate type pad, this case main points are, this former is made up of two lobe flute profile things, two groove surfaces that belong to two lobe flute profile things respectively are opposed in opposite directions, and, the structure of this mould also comprises hexagonal-shaped frame, and, two clubs, on the relative corner position of a pair of locations of structures of hexagonal-shaped frame, offer two holes respectively, the central point of described hexagonal-shaped frame is on the line between described two holes, an end separately of two clubs is connected with two lobe flute profile things respectively, one end of the remainder separately of two clubs penetrates or passes described two holes respectively, the material of hexagonal-shaped frame and club is a magnetic conductive material, the line with between described two holes that has magnet exciting coil to be wrapped in described hexagonal-shaped frame respectively is two side positions on boundary, the bulk material of flute profile thing is a magnetic conductive material, groove surface position at the flute profile thing is equiped with the carbide alloy inner liner, and the thickness of carbide alloy inner liner is between 1 millimeter and 20 millimeters.Described hexagonal-shaped frame is that profile is hexagonal framework.The art-recognized meanings of described die-cushion and former and upper punch is known in the forming process of ceramics technical field.Described magnetic conductive material refers to magnetic conductivity material preferably, and described magnetic conductive material is the carbon steel of soft iron, different phosphorus content and multi-element alloy steel or the like for example, and the art-recognized meanings of described magnetic conductive material is known.The art-recognized meanings of described carbide alloy one speech is known.It has described carbide alloy inner liner in this case mould and helps prolong this case die life.This case mould can further include some annexes, described annex is power supply, cable for example, and, be installed in the power switch on the circuit, or the like, the described magnet exciting coil in this case mould structure can connect with described power supply by cable and via described power switch.When the described flute profile thing of two lobes involutory in opposite directions, and when connecting the current path of described magnet exciting coil and described power supply, form complete closed magnetic circuit, the described flute profile thing of two lobes relies on powerful magneticaction to each other, be interlocked mutually powerfully, and when contactor was in off-state, magneticaction disappeared, and the described flute profile thing of two lobes can transfer open state to from involutory state like a cork.
The structural requirement of this case is to twine magnet exciting coil on two side positions on boundary at the line with between described two holes of hexagonal-shaped frame, and such structure just is enough to form the closed magnetic circuit that satisfies this case purpose.Certainly, also can allow further on club, to twine magnet exciting coil, the club that has further been twined magnet exciting coil can be any in described two clubs, further, also can allow two clubs all to be wound with magnet exciting coil in its surface.Thus, further the preferred construction scheme is to have at least one described club to be wound with magnet exciting coil in its surface.Further the preferred construction scheme is, all is wound with magnet exciting coil on the surface separately of two clubs.Such structure helps further to strengthen the described closed magnetic circuit of constraint, helps to offset the magnetic attraction loss that brings because of the disperse of magnetic line of force part.
The material of the described upper punch in this case mould structure and the material of described die-cushion can be the materials that certain degree of hardness is arranged arbitrarily, for example carbide alloy, pottery; Even also can be the magnetic conductive material that certain degree of hardness is arranged, for example high-carbon steel; But for suitable mutually with the magnetic force catch mechanism of mould preferably, preferred upper punch is the upper punch of being made by no magnetic material or non-magnetic material, and preferred die-cushion is the die-cushion of being made by no magnetic material or non-magnetic material.Described no magnetic material or non-magnetic material refer to nonmagnetic response in magnetic field or the very weak material of magnetic response, for example thyrite, zirconia ceramic material, hard Cu alloy material, non-magnesium hard alloy material.By upper punch and the die-cushion that no magnetic material or non-magnetic material are made, its action is not subjected to magnetic field to pin down, disturb.
Based on the consideration of aspects such as material technology maturity and processing, price, durability, further preferred upper punch is the upper punch of being made by the non-magnesium hard alloy material, and further preferred die-cushion is the die-cushion of being made by the non-magnesium hard alloy material.
The art-recognized meanings of non-magnesium hard alloy material one speech is known.The non-magnesium hard alloy material market is on sale.
The assembly of described mould can also comprise bottom magnetic path isolation part, this bottom magnetic path isolation part is used for the external pressure mechanical component of mold work district magnetic circuit and mould bottom side direction is kept apart, this bottom magnetic path isolation part is block, column or plate object, the material of this bottom magnetic path isolation part is no magnetic material or non-magnetic material, and this bottom magnetic path isolation part fits together with the bottom side of described die-cushion under mould magnetic circuit duty.Because when using this case mould, the mechanical component that the external pressure mechanical component of mould bottom side direction is normally made by the ferrous materials with magnetic conductivity, the effect of the described bottom of this case magnetic path isolation part, be that the external pressure mechanical component of mould magnetic circuit system and described mould bottom side direction is spaced apart, in order to avoid cause mould magnetic force locking strength to weaken from the bottom side disperse because of the magnetic line of force.
The further preferred making material of described bottom magnetic path isolation part is the non-magnesium hard alloy material.
The assembly of described mould further can comprise top magnetic path isolation part, this top magnetic path isolation part is used for the external pressure mechanical component of mold work district magnetic circuit and mould top side direction is kept apart, this top magnetic path isolation part is block, column or plate object, the material of this top magnetic path isolation part is no magnetic material or non-magnetic material, and this top magnetic path isolation part fits together with an end of the remainder of described upper punch under mould magnetic circuit duty.For the same reason, similar with the effect of bottom magnetic path isolation part, the effect of the described top of this case magnetic path isolation part, be that the external pressure mechanical component of mould magnetic circuit system and described mould top side direction is spaced apart, in order to avoid cause mould magnetic force locking strength to weaken from the top side disperse because of the magnetic line of force.
The further preferred material of making of described top magnetic path isolation part also is to select to use the non-magnesium hard alloy material.
Because under the mould user mode, be block, column or tabular described top magnetic path isolation part are difficult for putting at the top of described upper punch, can bring some inconvenience in the operation, use operation in order to carry out mould more like a cork, the further preferred construction of this top magnetic path isolation part is: contain a concave pit hole structure on the surface of this top magnetic path isolation part at least, it is that pattern with an end of the remainder of described upper punch mates mutually that its pattern is constructed in this concave pit hole, and an end of the remainder of described upper punch is fitted and connected together mutually with the mode of the lip-deep described concave pit hole of top magnetic path isolation part structure with socket under mould magnetic circuit duty.Can contain more than one concave pit hole structure on the surface of this top magnetic path isolation part, the quantity in concave pit hole is not limit, described more than one concave pit hole both can be the hole, hole with identical bore, it also can be hole, hole with different bores, use with the convenient one of selecting as required, the described top magnetic path isolation part of this structure such as samely rise the top that cap is buckled in upper punch has prevented or has weakened the disperse of the magnetic line of force from the top side direction.
The utility model has the advantages that, utilize the switch motion of the described power supply that is connected with described magnet exciting coil, just can control the described flute profile thing of two lobes, they are switched between mutual interlocking pattern of brute force and relaxed state fast, so, can carry out the powder operation of exerting pressure under the mutual interlocking pattern of described brute force, and the sample piece that will form through the operation of exerting pressure under described relaxed state takes out easily, this case mould has been dissolved the demoulding difficult problem after the described blank moulding.
Description of drawings
Fig. 1 is the described a kind of mould that is used for the ceramic powder moulding of the prior art, and the member of arranging in regular turn from top to bottom among the figure is respectively upper punch, former and die-cushion.
Fig. 2 is the female mould structure schematic diagram of this case embodiment, this figure shows is this case embodiment female mould structure form under the depression angle, two lobe flute profile things described in this figure are in open, lax state, do not have the combining form between depicted in greater detail carbide alloy inner liner and the flute profile thing body among the figure, do not draw match complete upper punch and die-cushion among the figure yet.
Fig. 3 shows be former in this case example structure under the duty that is in the energising of mutual interlock and magnet exciting coil, its inner closed magnetic circuit form schematic diagram.
Among the figure, 1,5 is respectively two clubs that installation position is different, the 2nd, and described hexagonal-shaped frame, 3,8 is respectively two magnet exciting coils that installation position is different, 4,9 is respectively pertusate two the drift angle positions of offering of hexagonal-shaped frame, and 6,7 is respectively two different lobe grooved things of locations of structures.
The specific embodiment
In this case embodiment that Fig. 2 showed, emphasis is showed female mould structure, the structure of actual mould comprises the die-cushion that mutual sheathing in regular turn is used in combination, and, former, and, upper punch, former is cylindric thing, upper punch is that an end places and is used for cylinder that the powder sample is exerted pressure in the negative impression, die-cushion is to place interior the exerting pressure with upper punch of negative impression to hold locational in opposite directions circular plate type pad, in this example, the place that highlights this case technical characterictic shows, this former is made up of two lobe flute profile things, this two lobes flute profile thing is respectively flute profile thing 6 and flute profile thing 7, two groove surfaces that belong to flute profile thing 6 and flute profile thing 7 respectively are opposed in opposite directions, and, the structure of this mould also comprises hexagonal-shaped frame 2, and, two clubs, hexagonal-shaped frame 2 is that profile is hexagonal framework, on the relative corner position of a pair of locations of structures of hexagonal-shaped frame 2, offer two holes respectively, the central point of hexagonal-shaped frame 2 is on the line between described two holes, described two holes lay respectively at drift angle position 4 and drift angle position 9, described line is virtual, the line of non-material object, described line is the expression word that is used to illustrate dependency structure position relation, described two clubs are respectively club 1 and club 5, an end separately of club 1 and club 5 is connected with flute profile thing 7 and flute profile thing 6 respectively, one end of the remainder separately of club 1 and club 5 penetrates or passes described two holes respectively, the material of hexagonal-shaped frame 2 and club 1 and club 5 is magnetic conductive materials, magnet exciting coil 3 is arranged, 8 lines with between described two holes that are wrapped in hexagonal-shaped frame 2 respectively are two side positions on boundary, the bulk material of flute profile thing 6 and flute profile thing 7 is magnetic conductive materials, groove surface position separately at flute profile thing 6 and flute profile thing 7 all is equiped with the carbide alloy inner liner, and the thickness of carbide alloy inner liner is between 1 millimeter and 20 millimeters.Described club is a kind of socket relation that allows the slippage action with the annexation of its corresponding hole that penetrates or pass.There is not the combining form between depicted in greater detail carbide alloy inner liner and the flute profile thing body in the accompanying drawing.Flute profile beyond the region of objective existence side surface profile is not limited to the arc surface shape, and described flute profile thing refers to the blocks that contains Baltimore groove, and its outer surface profile can be an arbitrary shape.The counterpart member of two positions about upper punch of not drawing in Fig. 2 and die-cushion, its structural form are analogous to respectively and appear in Fig. 1.The structure of this embodiment can certainly comprise power supply, cable and the power switch do not drawn in the drawings or the like annex.It is the structure that is wound with magnet exciting coil on the optional club surface among club 1 or the club 5 that this case structure also can allow.It is the structure that all is wound with magnet exciting coil on the surface of club 1 and club 5 that this case structure also can further allow.
Claims (10)
1. rely on the dry-pressing formed mould of ceramic batch of electromagnetic technique principle, comprise the die-cushion that mutual sheathing in regular turn is used in combination, and, former, and, upper punch, described former is cylindric thing, described upper punch is that an end places and is used for cylinder that the powder sample is exerted pressure in the negative impression, described die-cushion is to place interior the exerting pressure with upper punch of negative impression to hold locational in opposite directions circular plate type pad, it is characterized in that, this former is made up of two lobe flute profile things, two groove surfaces that belong to two lobe flute profile things respectively are opposed in opposite directions, and, the structure of this mould also comprises hexagonal-shaped frame, and, two clubs, on the relative corner position of a pair of locations of structures of hexagonal-shaped frame, offer two holes respectively, the central point of described hexagonal-shaped frame is on the line between described two holes, an end separately of two clubs is connected with two lobe flute profile things respectively, one end of the remainder separately of two clubs penetrates or passes described two holes respectively, the material of hexagonal-shaped frame and club is a magnetic conductive material, the line with between described two holes that has magnet exciting coil to be wrapped in described hexagonal-shaped frame respectively is two side positions on boundary, the bulk material of flute profile thing is a magnetic conductive material, groove surface position at the flute profile thing is equiped with the carbide alloy inner liner, and the thickness of carbide alloy inner liner is between 1 millimeter and 20 millimeters.
2. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 1 is characterized in that, has at least one described club to be wound with magnet exciting coil in its surface.
3. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 2 is characterized in that, all is wound with magnet exciting coil on the surface separately of two clubs.
4. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 1 is characterized in that, described upper punch is the upper punch of being made by no magnetic material or non-magnetic material, and described die-cushion is the die-cushion of being made by no magnetic material or non-magnetic material.
5. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 4 is characterized in that described upper punch is the upper punch of being made by the non-magnesium hard alloy material, and described die-cushion is the die-cushion of being made by the non-magnesium hard alloy material.
6. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 4, it is characterized in that, the assembly of described mould comprises bottom magnetic path isolation part, this bottom magnetic path isolation part is used for the external pressure mechanical component of mold work district magnetic circuit and mould bottom side direction is kept apart, this bottom magnetic path isolation part is block, column or plate object, the material of this bottom magnetic path isolation part is no magnetic material or non-magnetic material, and this bottom magnetic path isolation part fits together with the bottom side of described die-cushion under mould magnetic circuit duty.
7. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 6 is characterized in that the material of this bottom magnetic path isolation part is the non-magnesium hard alloy material.
8. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 4, it is characterized in that, the assembly of described mould comprises top magnetic path isolation part, this top magnetic path isolation part is used for the external pressure mechanical component of mold work district magnetic circuit and mould top side direction is kept apart, this top magnetic path isolation part is block, column or plate object, the material of this top magnetic path isolation part is no magnetic material or non-magnetic material, and this top magnetic path isolation part fits together with an end of the remainder of described upper punch under mould magnetic circuit duty.
9. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 8 is characterized in that the material of this top magnetic path isolation part is the non-magnesium hard alloy material.
10. the dry-pressing formed mould of ceramic batch of support electromagnetic technique principle according to claim 8, it is characterized in that, at least contain a concave pit hole structure on the surface of this top magnetic path isolation part, it is that pattern with an end of the remainder of described upper punch mates mutually that its pattern is constructed in this concave pit hole, and an end of the remainder of described upper punch is fitted and connected together mutually with the mode of the lip-deep described concave pit hole of top magnetic path isolation part structure with socket under mould magnetic circuit duty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201084701U CN202045717U (en) | 2011-04-06 | 2011-04-06 | Ceramic blank dry press forming die based on electromagnetism technical principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201084701U CN202045717U (en) | 2011-04-06 | 2011-04-06 | Ceramic blank dry press forming die based on electromagnetism technical principle |
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| Publication Number | Publication Date |
|---|---|
| CN202045717U true CN202045717U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201084701U Expired - Fee Related CN202045717U (en) | 2011-04-06 | 2011-04-06 | Ceramic blank dry press forming die based on electromagnetism technical principle |
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| Country | Link |
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| CN (1) | CN202045717U (en) |
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2011
- 2011-04-06 CN CN2011201084701U patent/CN202045717U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20120406 |