CN202573081U - Die structure for powder compression - Google Patents
Die structure for powder compression Download PDFInfo
- Publication number
- CN202573081U CN202573081U CN 201220138934 CN201220138934U CN202573081U CN 202573081 U CN202573081 U CN 202573081U CN 201220138934 CN201220138934 CN 201220138934 CN 201220138934 U CN201220138934 U CN 201220138934U CN 202573081 U CN202573081 U CN 202573081U
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- wedge
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Abstract
The utility model provides a die structure for powder compression. The die structure comprises a compression base, a concave die and a convex die, wherein the concave die is placed on the compression base, is matched with the convex die and comprises a cavity and more than two wedge-shaped sliding blocks, and the wedge-shaped sliding blocks are arranged on the inner wall of the cavity in a surrounding manner. According to the utility model, the more than two wedge-shaped blocks are arranged on the inner wall of the concave die, the convex die applies friction force to the sliding blocks when the sizing is finished and the die releasing is carried out, the sliding blocks move towards the outside of the concave die under the function of the friction force, and due to the wedge-shaped structures of the sliding blocks, the outer diameter of a ring formed by the sliding blocks in the cavity of the concave die is gradually reduced, and extruding force applied to the sliding blocks by the inner wall of the cavity of the concave die is gradually reduced during the process that the sliding blocks move towards the outer side of the concave die, so that the sliding blocks gradually expand, and gaps are formed between the sliding blocks and sample wafers, therefore, binding force between the sample wafers and the sliding blocks is effectively reduced, the sample wafers are not easy to break during the die releasing process, and the producing efficiency of the sample wafers can be improved.
Description
Technical field
The utility model relates to mould manufacturing field, relates in particular to a kind of improvement that is used for the mould structure of pressed powder.
Background technology
The pressed powder technology is widely used in the analytical test field to sample.Drying or roasting, the powdered sample of grinding and an amount of additive are put into compression mold, compression mold is applied certain pressure after, make required print.The staff can carry out corresponding analytical test according to print.Obtain the measured print of matter by the compression mold making, can be convenient to later analytical test work.
Existing compression mold structure is as depicted in figs. 1 and 2, it comprise compressing tablet base 1 ', cylindrical male 2 ', cylindrical shape die 3 ' and the demoulding base 4 that is used for fixing '.When making pressed powder; At first with die 3 ' be positioned over compressing tablet base 1 ' center position; Powder that mixes and additive sample are added in the space that is made up of die 3 ' inwall, punch 2 ' upper surface and compressing tablet base 1 ' upper surface; Then at punch 2 ' exert pressure with compressing tablet base 1 ' two ends, make the powder typing that is squeezed.When after accomplishing typing, carrying out the demoulding; Take off earlier compressing tablet base 1 '; Die 3 ' installation compressing tablet base 1 ' a side, install a demoulding base 4 ' with fixing die 3 ', as shown in Figure 2; Apply top power F ' in punch one side, make print by punch 2 ' eject die 3 ' to demoulding base 4 ' position.
Adopt said apparatus; Can accomplish the pressed powder sample preferably; The boss that the inboard shape of one shape and die adapts especially is set in the central area of compressing tablet base; Can well solve die 3 ' orientation problem, make die 3 ' be positioned over accurately compressing tablet base 1 ' the center and can not move.But still there is weak point in it, in knockout course, because print is bonding with die 3 ' inwall under pressure, is applying to punch in the process of top power, causes print broken easily, makes and makes the print inefficiency.
The utility model content
The purpose of the utility model be to provide a kind of when making powder compressing tablet not breakable mould structure, improve to make efficient.
The utility model is to realize like this; A kind of mould structure that is used for pressed powder; The punch that comprises the compressing tablet base, is placed in the die on the said compressing tablet base and can matches with said die; Said die comprises a cavity, said die also comprise be located on its cavity inner wall more than two around the wedge block that forms.
Further, said die cavity inner wall axially have at least one gathering sill, said wedge block is provided with and the suitable guide pad of said gathering sill.
Further, said die is provided with fixture.
Concrete, said fixture is the demoulding base that is arranged at the die bottom.
Concrete, said demoulding base has a cavity, and the shape of the shape of said cavity and said wedge block periphery is suitable.
Further, the upper end of said punch is connected with drive unit.
Further, said wedge block five equilibrium is centered around the die cavity inner wall.
The utlity model has following technique effect:
1) cavity inner wall of the said die of the utility model is provided with the wedge block that forms that centers on more than two, and when the demoulding was carried out in the completion typing, punch applied friction force in slide block, and slide block receives frictional force and outside die, moves.Because slide block is a wedge structure; In die movement outside process, the extruding force that slide block receives the die inwall is more and more littler, and slide block opens gradually; Make between slide block and the print and the gap occurs; Effectively reduce print and slide block cohesive force, it is broken that print is difficult for when the demoulding, improves print and make efficient;
2) the utility model in the die inwall axially have a gathering sill, slide block is provided with guide pad, when receiving the punch active force; It is stressed even when the gathering sill of slide block on the die inwall moved axially; Avoid occurring the rolling of slide block, avoid print to avoid attrition crushing, on the other hand; Slide block can be installed in the gathering sill of die inwall directly and accurately, makes things convenient for the staff to operate.
3) the utility model is provided with fixture in die, when the demoulding, need on punch, apply certain function power, after die is fixed, can prevent when the demoulding, to occur rocking, thus the integrality of better protection print;
4) the said wedge block five equilibrium of the utility model is centered around the die cavity inner wall, and shape that so just can a plurality of slide blocks is set to identical, when die sinking is produced, can reduce the die sinking number of times, makes things convenient for production and processing, and it is easy for installation also to help the staff.
Description of drawings
Fig. 1 is the schematic cross-section of pressed powder mould of the prior art;
Schematic cross-section when Fig. 2 is the demoulding of pressed powder mould of the prior art;
Fig. 3 is the utility model embodiment schematic cross-section;
Fig. 4 is the schematic cross-section of die;
Fig. 5 is a die top face view;
Fig. 6 is the schematic cross-section during the pressed powder mold releasability among the utility model embodiment;
Fig. 7 is the schematic cross-section during the pressed powder mold releasability among the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model causes the problem of print fragmentation for the cohesive force that solves print and when the demoulding, produced with mould inner surface; At the die cavity inner wall plural wedge block is set; Wedge block receives the frictional force effect and outwards moves when the demoulding, because the thickness of itself is less in the outside motion process of slide block, the extruding force that makes slide block receive the die inwall also diminishes; Slide block opens gradually; Gap between slide block and the print is also become greatly, and the cohesive force between slide block and all diminishes, and makes the not breakable purpose of print integral body thereby reach.
Referring to Fig. 3 to Fig. 5, the utility model embodiment provides a kind of mould structure that is used for pressed powder according to above-mentioned design, comprises compressing tablet base 1; The punch 2 that is placed in the die 3 on the said compressing tablet base 1 and can matches with said die 3; Said die 3 comprises a cavity 30, and these cavity 30 inwalls are provided with more than two around the wedge block 31 that forms, and general evenly is set to three, four, five; Present embodiment is set to three, and it makes things convenient for the staff to install on the one hand; On the other hand, when helping production and processing, also can solve the broken problem of print of solution required for the present invention preferably.
When making compressing tablet, powder adds by in compressing tablet base 1 upper surface, slide block 31 surfaces that die 3 inwalls are installed, the cavity that punch 2 lower surfaces constitute, applies suitable top power at punch 2 and compressing tablet base 1, makes powder be squeezed typing in flakes; This moment, slide block 31 was consistent with the top power direction that punch 2 applies by being thinned to thick direction; (certainly; If punch is applied pulling force; Thick direction should to apply the direction of pulling force identical with punch by being thinned to for slide block so, when the demoulding, need punch be withdrawed from die fully and can take out print owing to apply pulling force, and its operation is not convenient especially) though slide block 31 receives the trend of the oriented die of the frictional force effect of projection 23 outsides slip; But because the barrier effect of compressing tablet base 1, the position of slide block 31 can not change; After time through one section reinforcement squeezing effect, can carry out stripping operation, take off compressing tablet base 1; Continuation applies top power to punch 2, is not provided with this moment to stop that slide block 31 receives the frictional force effect and outwards slides; Because the external diameter of the annulus that constituted of slide block 31 changes, in the slide block 31 outside sliding processes, it is increasing that the external diameter of slide block 31 annulus is adjacent the gap of internal diameter of cavity 30 of die 3 at place; Thereby slide block 31 to receive the extruding force of die 3 inwalls also more and more littler, slide block 31 opens according to the angle that die 3 inwalls tilt, and makes between print and the slide block 31 gap to occur; Cohesive force between slide block 31 and print diminishes, and when the demoulding, is difficult for fragmentation, thereby; Preparation also can be suitable in the powder minimizing additive (like binding agent etc.), improve the quality of print.
Further; Cavity 30 inwalls of the said die 3 of the utility model axially have at least one gathering sill 32; Said wedge block 31 is provided with the guide pad 311 suitable with said gathering sill 32, like Fig. 4 and shown in Figure 5, offers the guide pad 311 of a strip at the middle part of three slide blocks 31; Cavity 30 inwall correspondence positions at die 3 offer three gathering sills 32; Can certainly be set to two or many, gathering sill 32 quantity are many more, and the stability of slide block 31 can also can increase.During installation, the staff can install according to gathering sill 32 easily, and the guide effect of gathering sill 32 can not rotate slide block in sliding process, improve its stability.
In the concrete structure design, said wedge block 31 five equilibriums are centered around die 3 cavitys 31 inwalls.Consider the convenience that the staff installs and the convenience of processing; The planform of each slide block 31 should be identical as much as possible with size; Carrying out to save cost when die sinking is made like this, also helping the staff when mounted and install simply and easily and can not make mistakes.Certainly, also can be made into square each slide block 31 or other shape, but it is just so not convenient in installation, the length of slide block 31 also can be set to the length of half die 3, and be as shown in Figure 7, and it also can realize goal of the invention of the present invention easily.
Further, like Fig. 6 and shown in Figure 7, said die 3 is provided with fixture.Owing to when the demoulding, need continue punch 2 is applied top power; If fix with mode such as hand-held; Will inevitably cause its stability not high, through devices such as fixing threaded hole, retainer ring, fixed feet are set on punch 2, can be with its stable being fixed on other fixture.In the present embodiment, this fixture is the demoulding base 4 that is arranged at die 3 bottoms, promptly is arranged on former compressing tablet position base place; Be connected with die 3 through connected modes such as screw thread or decks, in addition, this demoulding base 4 has a cavity 41; Shape when the shape of cavity 41 and slide block 31 stretch out die 3 adapts, and when carrying out the demoulding, slide block 31 stretches out die 3; Because the shape of cavity 41 and the shape that slide block 31 stretches out adapt, its cross section is isosceles trapezoid or other analogous shape, and it is installed in die 3 bottoms; Can get into the cavity of this demoulding base after the print demoulding of processing, can avoid destroying by the better protect print.
Further, the upper end of said punch 2 is connected with drive unit 5.As the better a kind of mode implemented of the utility model; Connect drive unit 5 at punch base 1; Like hydraulic cylinder, vapour pressure cylinder etc., the precision control through to drive unit makes the distance that when carrying out the pressing mold and the demoulding, can accurately control its size of exerting pressure and slip.
The above is merely the utility model preferred embodiment; Its structure is not limited to the above-mentioned shape of enumerating; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. mould structure that is used for pressed powder; The punch that comprises the compressing tablet base, is placed in the die on the said compressing tablet base and can matches with said die; Said die comprises a cavity, it is characterized in that: said die also comprise be located on its cavity inner wall more than two around the wedge block that forms.
2. the mould structure that is used for pressed powder according to claim 1 is characterized in that, said die cavity inner wall axially have at least one gathering sill, said wedge block is provided with and the suitable guide pad of said gathering sill.
3. the mould structure that is used for pressed powder according to claim 1 is characterized in that said die is provided with fixture.
4. the mould structure that is used for pressed powder according to claim 3 is characterized in that, said fixture is the demoulding base that is arranged at the die bottom.
5. the mould structure that is used for pressed powder according to claim 4 is characterized in that, said demoulding base has a cavity, and the shape of the shape of said cavity and said wedge block periphery is suitable.
6. according to each described mould structure that is used for pressed powder of claim 1-5, it is characterized in that the upper end of said punch is connected with drive unit.
7. according to each described mould structure that is used for pressed powder of claim 1-5, it is characterized in that said wedge block five equilibrium is centered around said die cavity inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220138934 CN202573081U (en) | 2012-04-01 | 2012-04-01 | Die structure for powder compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220138934 CN202573081U (en) | 2012-04-01 | 2012-04-01 | Die structure for powder compression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202573081U true CN202573081U (en) | 2012-12-05 |
Family
ID=47242530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220138934 Expired - Fee Related CN202573081U (en) | 2012-04-01 | 2012-04-01 | Die structure for powder compression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202573081U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379619A (en) * | 2017-07-25 | 2017-11-24 | 北京理工大学 | A kind of powder presser die and tabletting method for being easy to move back mould |
| CN108340622A (en) * | 2018-05-17 | 2018-07-31 | 中国工程物理研究院化工材料研究所 | A kind of stamping of powder molding machine in situ suitable for X-ray CT system |
| CN113237716A (en) * | 2021-04-29 | 2021-08-10 | 中国神华煤制油化工有限公司 | Powder test sample piece, preparation mold assembly and preparation method thereof, and method for measuring carbon content of catalyst |
-
2012
- 2012-04-01 CN CN 201220138934 patent/CN202573081U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379619A (en) * | 2017-07-25 | 2017-11-24 | 北京理工大学 | A kind of powder presser die and tabletting method for being easy to move back mould |
| CN108340622A (en) * | 2018-05-17 | 2018-07-31 | 中国工程物理研究院化工材料研究所 | A kind of stamping of powder molding machine in situ suitable for X-ray CT system |
| CN113237716A (en) * | 2021-04-29 | 2021-08-10 | 中国神华煤制油化工有限公司 | Powder test sample piece, preparation mold assembly and preparation method thereof, and method for measuring carbon content of catalyst |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121205 Termination date: 20140401 |