CN109570498A - A kind of tilting band notch salt core compacting tool set in the same direction and manufacturing process - Google Patents
A kind of tilting band notch salt core compacting tool set in the same direction and manufacturing process Download PDFInfo
- Publication number
- CN109570498A CN109570498A CN201811364955.XA CN201811364955A CN109570498A CN 109570498 A CN109570498 A CN 109570498A CN 201811364955 A CN201811364955 A CN 201811364955A CN 109570498 A CN109570498 A CN 109570498A
- Authority
- CN
- China
- Prior art keywords
- lower die
- salt core
- salt
- connector sleeve
- upper mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/105—Salt cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/108—Installation of cores
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention provides a kind of tilting band notch salt core compacting tool set in the same direction and manufacturing process, including upper mold, lower die, matched lower die top is installed in the lower die, indwelling has salt core charging region between the lower die and lower die top, it is provided with spring connector sleeve on the lower die top, is provided with floating die assembly in the spring connector sleeve；The through-hole being put into for spring connector sleeve is provided in the upper mold, technique includes mold assembly, salt material is added, salt material is suppressed and salt material is dry, tilting band notch salt core compacting tool set in the same direction of the invention and manufacturing process, it can be with one-pass molding tilting band notch salt core in the same direction, without subsequent polishing operation, save the time, guarantee final product quality, and due to being once integrally formed, salt core has higher design strength and surface smoothness, and finished product salt core can better meet the internal cold quality requirement of piston.
Description
Technical field
The present invention relates to colod-application salt core compacting tool set and its manufacturing process in a kind of piston, in particular to a kind of tilting band in the same direction
Notch salt core compacting tool set and manufacturing process.
Background technique
With the continuous promotion of national emission standard, the requirement to engine performance is also being continuously improved: power is big, oil consumption
It is low, noise is small, discharge is low.And piston is as one important core component of internal combustion engine, the superiority and inferiority of performance is even more to become outstanding
It is important.In order to improve the performance under the conditions of piston high temperature working in reciprocating mode, the inner cooling path structure design of piston is also more and more
Complexity improves the thermal fatigue property of piston to reduce piston head temperature at work.
In the same direction with notch salt core, salt core section two sides gradient in the same direction and notch geometry can not be once pressed into bilateral at present
Type, thus beaten by hand using template comparison using numerical control mill after notch progress numerical control processing or vehicle system after generalling use vehicle system
Mill gap portions raw mode produced, both production methods are at high cost, and production efficiency is low, cannot batch application
In industrial production.
Summary of the invention
Simple, high reliablity that in order to compensate for the shortcomings of the prior art, the present invention provides a kind of structures, manufacture craft are easier
Salt core mold and manufacturing process.
The present invention is achieved through the following technical solutions:
A kind of tilting band notch salt core compacting tool set in the same direction, including upper mold, lower die, be equipped in the lower die it is matched under
Mould top, indwelling has salt core charging region between the lower die and lower die top, is provided with spring connection on the lower die top
It covers, is provided with die springs in the spring connector sleeve；The through-hole being put into for spring connector sleeve is provided in the upper mold.
Fluted, groove is arranged on the lower die top in tilting band notch salt core compacting tool set in the same direction of the present invention
It is internally provided with internal screw thread, spring connector sleeve bottom is provided with the external screw thread to match with groove internal screw thread.
Tilting band notch salt core compacting tool set in the same direction of the present invention, the groove and spring connector sleeve are three groups.
Tilting band notch salt core compacting tool set in the same direction of the present invention, the length of the die springs are greater than the length of through-hole
Degree.
A kind of technique of tilting band notch salt core compacting tool set production salt core in the same direction, comprising the following steps:
Step 1, the assembly of salt core mold are connected and fixed,
1. spring connector sleeve is put into upper mold；
2. die springs are sequentially loaded into spring connector sleeve；
3. upper mold, die springs and the spring connector sleeve that assembly is completed are connect with compacting cylinder；
4. lower die is fixed on work estrade, lower die top is placed on lower die according to gap position cooperation；
5. operation compacting cylinder comes downwards to spring connector sleeve and touches at lower die upper position；
6. spring connector sleeve lower thread and lower die upper grooves screw thread are fixed；
Salt material is added in step 2,
1. crude salt is screened using filter screen；
2. the crude salt after screening mixes according to a certain percentage with auxiliary material；
Step 3, the compacting of salt core,
1. the salt material mixed is added into salt core charging region；
2. operation compacting cylinder drives upper mold to suppress downwards, die springs are compressed first in pressing process, and die springs are by elastic force
It is transmitted on lower die top by spring connector sleeve, matches lower die top closely with lower die always in entire pressing process
It closes；
3. when upper mold 01 is pressed onto according to the pressure value of setting, closed interval that upper die and lower die top and lower die collectively constitute
As salt core section, pressure maintaining suppress salt core blank；
4. pressure maintaining is after a certain period of time, upper mold is run up, and in the process, lower die top is pressed in lower die by die springs always
On, when upper mold, which is up to spring connector sleeve, to be contacted at counterbore, drive spring connector sleeve and the common uplink in lower die top；
5. upper mold starts uplink, salt core blank loses the press power of upper mold, and salt core blank leads to salt when stress is suppressed in release
Core is expanded to radial direction, at this moment salt core blank relying on lower die top tightly under the action of expansive force, with lower die
The common uplink in top；
6. lower die top with salt core blank uplink in place after, unload charging tray in lower die placement, then carry out it is primary it is above-mentioned 1.-pressure 2.
Process processed, at this moment upper mold ejects salt core blank from lower die top to unloading on charging tray；
Step 4: salt core is dry,
Salt core blank is put into natural evaporation in air humidity≤25%RH hothouse dry no less than 9.5 hours, can be carried out
Subsequent vehicle system, drilling and sintering.
The technique of production salt core as claimed in claim 5, which is characterized in that salt core blank projected area on vertical direction
The pressure of application is 1200-1400Kgf/cm2；Upper cylinder pressure effective travel is 350mm；Suppress effective travel >=25mm.
The technique of production salt core of the invention, auxiliary material described in the step 2 are waterglass and talcum powder, the salt material,
Waterglass and talcum powder quality specific gravity are as follows: 97%, 2.5% and 0.5%.
The technique of production salt core of the invention, the screening sieve in the step 2 is 20 mesh holes, and mixing utilizes mixing
Machine mixing 6-10 minutes.
The technique of production salt core of the invention, it is salt core hair that the volume in salt core charging region, which is added, in salt material in the step 3
1.25 times of green body product.
The beneficial effects of the present invention are:
Tilting band notch salt core compacting tool set in the same direction of the invention and manufacturing process, can be with one-pass molding tilting band notch salt in the same direction
Core is not necessarily to subsequent polishing operation, saves the time, guarantees final product quality, and due to being once integrally formed, and salt core has higher
Design strength and surface smoothness, finished product salt core can better meet piston internally cold quality requirement.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is schematic cross-section of the invention；
Fig. 2 is discharging schematic cross-section of the present invention；
Fig. 3 is present invention tilting band notch salt core section structural schematic diagram in the same direction；
Fig. 4 is present invention tilting band notch salt cored structure schematic diagram in the same direction.
In figure, 1 upper mold；2 die springs；3 spring coupling sleeves；4 lower die tops；5 lower dies；6 salt cores charging region；7 dischargings
Disk；8 salt core blanks.
Specific embodiment
The spatially relative terms such as "upper", "lower" " left side " " right side " can be used herein for ease of explanation, for saying
Relationship of the elements or features relative to another elements or features shown in bright figure.It should be understood that in addition in figure
Except the orientation shown, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure
Device is squeezed, and is stated as being located at other elements or the element of feature "lower" will be located into other elements or feature "upper".Cause
This, exemplary term "lower" may include both upper and lower orientation.Device, which can be positioned in other ways, (to be rotated by 90 ° or is located at
Other orientation), it can be interpreted accordingly used herein of the opposite explanation in space.
Attached drawing 1-4 is a kind of specific embodiment of the invention.
A kind of tilting band notch salt core compacting tool set in the same direction, including upper mold 1, lower die 5, be equipped in the lower die 5 and its
Matched lower die top 4, indwelling has salt core charging region 6 between the lower die 5 and lower die top 4, sets on the lower die top 4
It is equipped with spring connector sleeve 3, is provided with die springs 2 in the spring connector sleeve 3；It is provided in the upper mold 1 for spring company
The through-hole that female connector 3 is put into.
Fluted, inside grooves are arranged on the lower die top 4 in tilting band notch salt core compacting tool set in the same direction of the invention
It is provided with internal screw thread, 3 bottom of spring connector sleeve is provided with the external screw thread to match with groove internal screw thread.
Tilting band notch salt core compacting tool set in the same direction of the invention, the groove and spring connector sleeve 3 are three groups.
Tilting band notch salt core compacting tool set in the same direction of the invention, the length of the die springs 2 are greater than the length of through-hole.
A kind of technique of tilting band notch salt core compacting tool set production salt core in the same direction, which comprises the following steps:
Step 1, the assembly of salt core mold are connected and fixed,
1. spring connector sleeve 3 is put into upper mold 1；
2. die springs 2 are sequentially loaded into spring connector sleeve 3；
3. upper mold 1, die springs 2 and the spring connector sleeve 3 that assembly is completed are connect with compacting cylinder；
4. lower die 5 is fixed on work estrade, lower die top 4 is placed on lower die 5 according to gap position cooperation；
5. operation compacting cylinder comes downwards to spring connector sleeve 3 and touches at 4 position of lower die top；
6. 3 lower thread of spring connector sleeve and 4 groove screw thread of lower die top are fixed；
Salt material is added in step 2,
1. crude salt is screened using filter screen, screening sieve is 20 mesh holes；
2. screening after crude salt mixed according to a certain percentage with auxiliary material, the auxiliary material be waterglass and talcum powder, the salt material,
Waterglass and talcum powder quality specific gravity are as follows: 97%:2.5% and 0.5%, mixing utilize batch mixer mixing 6-10 minutes.
Step 3, the compacting of salt core,
1. the salt material mixed is added into salt core charging region 6, the volume that salt core charging region 6 is added in the salt material is salt core
1.25 times of 8 volume of blank；
2. operation compacting cylinder drives upper mold 1 to suppress downwards, die springs 2 are compressed first in pressing process, and die springs 2 are by bullet
Power is transmitted on lower die top 4 by spring connector sleeve 3, keeps lower die top 4 tight with lower die 5 always in entire pressing process
Close fit；
3. when upper mold 01 is pressed onto according to the pressure value of setting, enclosed area that upper mold 1, lower die top 4 and lower die 5 collectively constitute
Between be salt core section, pressure maintaining suppresses salt core blank 8；
4. pressure maintaining is after a certain period of time, upper mold 1 is run up, and in the process, lower die top 4 is pressed in down by die springs 2 always
On mould 5, when upper mold 1, which is up to spring connector sleeve 3, to be contacted at counterbore, drive spring connector sleeve 3 and lower die top 4 it is common on
Row；
5. upper mold 1 starts uplink, salt core blank 8 loses the press power of upper mold 1, and salt core blank 8 is led when stress is suppressed in release
Salt core is caused to expand to radial direction, at this moment salt core blank relying on lower die top 4 tightly under the action of expansive force, with
The common uplink in lower die top 4；
6. lower die top 4 with 4 uplink of salt core blank in place after, placed on 5 top of lower die and unload charging tray 7, then carried out primary above-mentioned
2. 1. pressing process, at this moment upper mold 1 is by salt core blank 8 from ejection in lower die top 4 to unloading on charging tray 7；
Step 4: salt core is dry,
Salt core blank 8 is put into natural evaporation in air humidity≤25%RH hothouse dry no less than 9.5 hours, Ji Kejin
The subsequent vehicle system of row, drilling and sintering.
The technique of production salt core of the invention, the pressure that salt core blank projected area applies on the vertical direction are
1200-1400Kgf/cm2；Upper cylinder pressure effective travel: 350mm；Suppress effective travel: >=25mm.
Specific implementation of the invention is described in detail above, but is intended only as an example, the present invention is not
It is limited to specific implementation case described above, also within protection scope of the present invention to the equivalent modifications that carry out of the present invention.
Claims (9)
1. a kind of tilting band notch salt core compacting tool set in the same direction, including upper mold (1), lower die (5), it is characterised in that: the lower die
(5) matched lower die top (4) is installed, indwelling has salt core charging zone between the lower die (5) and lower die top (4) on
Domain (6) is provided with spring connector sleeve (3) on the lower die top (4), is provided with floating die assembly in the spring connector sleeve (3)
(2)；The through-hole being put into for spring connector sleeve (3) is provided in the upper mold (1).
2. tilting band notch salt core compacting tool set in the same direction as described in claim 1, it is characterised in that: the lower die top (4)
Upper setting is fluted, inside grooves are provided with internal screw thread, and spring connector sleeve (3) bottom is provided with to match with groove internal screw thread
External screw thread.
3. tilting band notch salt core compacting tool set in the same direction as claimed in claim 2, it is characterised in that: the groove and spring connect
Female connector (3) is three groups.
4. tilting band notch salt core compacting tool set in the same direction as described in claim 1, it is characterised in that: the die springs (2)
Length be greater than through-hole length.
5. utilizing the technique of tilting band notch salt core compacting tool set in the same direction production salt core described in claim 1, which is characterized in that
The following steps are included:
Step 1, the assembly of salt core mold are connected and fixed,
1. spring connector sleeve (3) is put into upper mold (1)；
2. die springs (2) are sequentially loaded into spring connector sleeve (3)；
3. upper mold (1), die springs (2) and the spring connector sleeve (3) that assembly is completed are connect with compacting cylinder；
4. lower die (5) is fixed on work estrade, lower die top (4) are placed on lower die (5) according to gap position cooperation；
5. operation compacting cylinder comes downwards to spring connector sleeve (3) and touches at lower die top (4) position；
6. spring connector sleeve (3) lower thread and lower die top (4) groove screw thread are fixed；
Salt material is added in step 2,
1. crude salt is screened using filter screen；
2. the crude salt after screening mixes according to a certain percentage with auxiliary material；
Step 3, the compacting of salt core,
1. the salt material mixed is added into salt core charging region (6)；
2. operation compacting cylinder drives upper mold (1) to suppress downwards, die springs (2) are compressed first in pressing process, die springs
(2) elastic force is transmitted on lower die top (4) by spring connector sleeve (3), makes lower die top (4) in entire pressing process
Always it is fitted close with lower die (5)；
3. when upper mold 01 is pressed onto according to the pressure value of setting, what upper mold (1), lower die top (4) and lower die (5) collectively constituted
Closed interval is salt core section, and pressure maintaining suppresses salt core blank (8)；
4. pressure maintaining is after a certain period of time, upper mold (1) is run up, and in the process, lower die top (4) are always by die springs (2)
Be pressed on lower die (5), when upper mold (1), which is up to spring connector sleeve (3), to be contacted at counterbore, drive spring connector sleeve (3) and
Lower die top (4) common uplink；
5. upper mold (1) starts uplink, salt core blank (8) loses the press power of upper mold (1), and salt core blank (8) is suppressed in release
Cause when stress salt core to radial direction expand, at this moment salt core blank under the action of expansive force tightly rely on lower die top
(4) on, with lower die top (4) common uplink；
Lower die top 6. (4) with salt core blank (4) uplink in place after, placed on lower die (5) top and unload charging tray (7), then carried out
It is primary it is above-mentioned 1.-pressing process 2., at this moment upper mold (1) is by salt core blank (8) from ejection in lower die top (4) to unloading charging tray
(7) on；
Step 4: salt core is dry,
Salt core blank (8) is put into natural evaporation in air humidity≤25%RH hothouse dry no less than 9.5 hours
Carry out subsequent vehicle system, drilling and sintering.
6. the technique of production salt core as claimed in claim 5, which is characterized in that salt core blank projected area is applied on vertical direction
The pressure added is 1200-1400Kgf/cm2；Upper cylinder pressure effective travel: 350mm；Suppress effective travel: >=25mm.
7. the technique of production salt core as claimed in claim 5, which is characterized in that auxiliary material described in step 2 is waterglass and cunning
Mountain flour, the salt material, waterglass and talcum powder quality specific gravity are as follows: 97%:2.5% and 0.5%.
8. the technique of production salt core as claimed in claim 5, which is characterized in that the screening sieve in step 2 is 20 mesh
Hole, mixing utilize batch mixer mixing 6-10 minutes.
9. the technique of production salt core as claimed in claim 5, which is characterized in that salt core charging region is added in salt material in step 3
(6) volume is 1.25 times of salt core blank (8) volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364955.XA CN109570498A (en) | 2018-11-16 | 2018-11-16 | A kind of tilting band notch salt core compacting tool set in the same direction and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364955.XA CN109570498A (en) | 2018-11-16 | 2018-11-16 | A kind of tilting band notch salt core compacting tool set in the same direction and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109570498A true CN109570498A (en) | 2019-04-05 |
Family
ID=65922851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811364955.XA Pending CN109570498A (en) | 2018-11-16 | 2018-11-16 | A kind of tilting band notch salt core compacting tool set in the same direction and manufacturing process |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200407520Y1 (en) * | 2005-11-09 | 2006-01-31 | 김희수 | Salt core for forming oil gallery of engine piston |
| CN201677001U (en) * | 2010-03-30 | 2010-12-22 | 山东滨州渤海活塞股份有限公司 | Salt core compacting tool set designed by proportional cavity |
| DE102013007735A1 (en) * | 2012-05-08 | 2013-11-14 | Audi Ag | Manufacture of salt kernel involves compressing salt mixture under high pressure, solidifying, adding mixture of binding agent and pure salt powder, injecting powder mixture into mold, and pressing |
| CN103658545A (en) * | 2013-12-25 | 2014-03-26 | 山东滨州渤海活塞股份有限公司 | Cross beam type salt-core pressing die and salt core production method adopting pressing die |
| CN103691891A (en) * | 2013-12-30 | 2014-04-02 | 山东滨州渤海活塞股份有限公司 | Inner-cooling salt core pressing die for piston and manufacturing technology thereof |
| CN107812895A (en) * | 2017-12-07 | 2018-03-20 | 滨州渤海活塞有限公司 | A kind of method of salt core compacting tool set and its salt core of manufacture and its manufacture salt core |
| KR20180037776A (en) * | 2016-10-05 | 2018-04-13 | 동양피스톤 주식회사 | Salt-core press fit loader |
| CN209647589U (en) * | 2018-11-16 | 2019-11-19 | 滨州渤海活塞有限公司 | A kind of tilting band notch salt core compacting tool set in the same direction |
-
2018
- 2018-11-16 CN CN201811364955.XA patent/CN109570498A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200407520Y1 (en) * | 2005-11-09 | 2006-01-31 | 김희수 | Salt core for forming oil gallery of engine piston |
| CN201677001U (en) * | 2010-03-30 | 2010-12-22 | 山东滨州渤海活塞股份有限公司 | Salt core compacting tool set designed by proportional cavity |
| DE102013007735A1 (en) * | 2012-05-08 | 2013-11-14 | Audi Ag | Manufacture of salt kernel involves compressing salt mixture under high pressure, solidifying, adding mixture of binding agent and pure salt powder, injecting powder mixture into mold, and pressing |
| CN103658545A (en) * | 2013-12-25 | 2014-03-26 | 山东滨州渤海活塞股份有限公司 | Cross beam type salt-core pressing die and salt core production method adopting pressing die |
| CN103691891A (en) * | 2013-12-30 | 2014-04-02 | 山东滨州渤海活塞股份有限公司 | Inner-cooling salt core pressing die for piston and manufacturing technology thereof |
| KR20180037776A (en) * | 2016-10-05 | 2018-04-13 | 동양피스톤 주식회사 | Salt-core press fit loader |
| CN107812895A (en) * | 2017-12-07 | 2018-03-20 | 滨州渤海活塞有限公司 | A kind of method of salt core compacting tool set and its salt core of manufacture and its manufacture salt core |
| CN209647589U (en) * | 2018-11-16 | 2019-11-19 | 滨州渤海活塞有限公司 | A kind of tilting band notch salt core compacting tool set in the same direction |
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