CN109177298B - Demoulding mechanism of powder press forming machine - Google Patents
Demoulding mechanism of powder press forming machine Download PDFInfo
- Publication number
- CN109177298B CN109177298B CN201811153800.1A CN201811153800A CN109177298B CN 109177298 B CN109177298 B CN 109177298B CN 201811153800 A CN201811153800 A CN 201811153800A CN 109177298 B CN109177298 B CN 109177298B
- Authority
- CN
- China
- Prior art keywords
- die
- side wall
- lower die
- mold
- pressing
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 239000000843 powder Substances 0.000 title claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims description 7
- 238000012797 qualification Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/022—Moulds for compacting material in powder, granular of pasta form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/32—Discharging presses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a demoulding mechanism of a powder pressing forming machine, which comprises a lower mould (5), a lower mould base (2) and an upper mould (1); the die comprises a die body, a lower die (5) and an upper die (1), wherein the lower die (4) is arranged on the die body, the lower die (5) is arranged in the die body, the lower die (5) is connected with the lower die (2) in a sliding mode, a die cavity (6) is formed between the lower die (5) and the inner die (4), and the upper die (1) is arranged right above the die cavity (6) and is connected in the die cavity (6) in a sliding mode during pressing; the inner side wall of the inner mold (4) is tightly matched with the side wall of the lower mold (5) during pressing, and the inner side wall of the inner mold (4) is separated from the side wall of the lower mold (5) during mold opening. After the structure is adopted, the inner side wall of the inner die is separated from the lower die during die opening, so that a pressed product is not adhered to the inner side wall of the inner die, and the ejection of the lower die is more convenient; therefore, the qualification rate of the product is greatly improved.
Description
Technical Field
The invention relates to the technical field of mechanical manufacturing equipment, in particular to a demoulding mechanism of a powder press forming machine.
Background
Powder press forming is a forming method by using an external pressure in a pressing die, and the press forming process comprises powder loading, pressing and demoulding. In the conventional demoulding structure of the powder press forming machine, a lower die is pushed upwards under the action of a guide mechanism, so that a pressed product is ejected from a die cavity. However, the release mechanism of the powder press molding machine having such a structure has problems in that:
firstly, powder is easy to adhere to the inner wall of a die cavity in the process of press forming, and once the product is ejected from the die cavity under the action of external force, the phenomenon of surface damage of the product is easy to occur, so that the qualification rate of the product is low;
secondly, considering the condition of ensuring the qualification rate, the inner wall of the die cavity is treated after each die opening, so that the die stripping efficiency is very low, and the production efficiency is greatly reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a demoulding mechanism of a powder press forming machine, which can greatly improve the product qualification rate and the production efficiency.
In order to solve the technical problems, the demoulding mechanism of the powder pressing forming machine provided by the invention comprises a lower mould, a lower mould base and an upper mould; the die comprises a die body, a lower die, an upper die, a lower die and a lower die, wherein the lower die is arranged in the die body in a sliding manner; the inner side wall of the inner mold is tightly matched with the side wall of the lower mold during pressing, and the inner side wall of the inner mold is separated from the side wall of the lower mold during mold opening.
The inner die comprises at least two unit inner modules, the outer side wall of each unit inner module is in sliding fit with the lower die holder, and the inner aperture of the inner die during die opening is larger than that of the inner die during die closing.
The number of the modules in the unit is three, and the modules are uniformly distributed along the circumferential direction.
The matching surface of the lower die holder and the inner die is a conical surface, the outer side wall of the corresponding inner die is also a conical surface, the inner die slides to the bottom of the lower die holder and is tightly matched with the lower die during pressing, and the inner die slides to the top of the lower die holder and is separated from the lower die during die opening.
The demolding mechanism further comprises a pressing plate, the pressing plate is provided with a groove with the diameter larger than the maximum outer diameter of the inner mold, and the pressing plate is fixedly connected to the top of the lower mold base and the groove faces downwards.
The upper end of the inner die is provided with a limiting plate, and the limiting plate slides and moves in the through hole of the pressing plate.
The reset structure comprises a reset spring, wherein a spring hole is formed in the top end of the inner die, the reset spring is positioned in the spring hole, the upper end of the reset spring is abutted against the bottom of a groove of the pressing plate, and the lower end of the reset spring is abutted against the bottom of the spring hole.
And a linkage mechanism which moves the inner die radially outwards and moves upwards along the lower die seat when the lower die is opened to eject the product is arranged between the lower die and the inner die.
The linkage mechanism is characterized in that a T-shaped guide groove is formed in the side wall of the lower die holder matched with the inner die, and a T-shaped guide bar matched with the T-shaped guide groove in a sliding manner is arranged on the outer side wall of the inner die; the lower die is provided with a shaft shoulder, and the shaft shoulder surface is propped against the bottom surface of the inner die.
After adopting the structure, compared with the prior art, the invention has the following advantages:
1) Because the inner side wall of the inner die is tightly matched with the lower die during pressing, a closed die cavity is formed among the inner die, the lower die and the upper die under the action of the upper die, so that powder products can be ensured to be successfully pressed; the inner side wall of the inner mold is separated from the lower mold during mold opening, so that a pressed product is not adhered to the inner side wall of the inner mold, and the ejection of the lower mold is more convenient; therefore, the qualification rate of the product is greatly improved; meanwhile, the inner side wall of the inner die has no residual powder, and the process of cleaning the die cavity is omitted, so that the production efficiency can be improved;
2) The inner die adopts a structure of at least two inner unit modules, so that the inner die can realize radial movement during die opening, the inner aperture of the inner die is larger than the diameter of the lower die during die opening, the inner die is separated from the surface of a product, and the next ejection is facilitated;
3) The arrangement of the pressing plate limits the upward moving stroke of the inner die, so that the inner die cannot be separated from the lower die holder;
4) The reset device between the pressing plate and the inner die enables the inner die to be reset to a position before pressing under the action of the reset spring after complete demolding so as to quickly enter the preparation of the next pressing process;
5) The guide plate at the top of the inner die is movably connected with the through hole of the pressing plate, so that the upper end of the inner die is radially limited;
6) The T-shaped guide strip, the T-shaped guide groove and the upper shaft shoulder of the lower die are arranged between the inner die and the lower die seat to form a linkage mechanism of the lower die and the inner die, so that the lower die can push out the inner die upwards and apply force radially outwards at the same time, and the inner die is synchronously pushed out radially, so that the inner die is separated from a pressed product.
Drawings
Fig. 1 is a schematic view showing a structure of a demoulding mechanism of a powder compacting machine before compacting.
Fig. 2 is a schematic view of the structure of the ejection mechanism of the powder press molding machine of the present invention at the time of ejection after pressing.
Wherein: 1. an upper die; 2. a lower die holder; 3. a pressing plate; 4. an inner mold; 5. a lower die; 6. a mold cavity; 7. a limiting plate; 8. a return spring; 9. a groove; 10. spring holes.
Detailed Description
The invention is described in further detail below in connection with the detailed description.
As can be seen from the schematic structural diagrams of the demoulding mechanism of the powder press forming machine of the present invention shown in fig. 1 and 2, the powder press forming machine comprises a lower die 5, a lower die holder 2 and an upper die 1. The die further comprises an inner die 4, the outer side wall of the inner die 4 is in sliding connection with the lower die holder 2, the lower die 5 is in sliding connection with the inner die 4, a die cavity 6 is formed between the lower die 5 and the inner die 4, and the upper die 1 is located right above the die cavity 6 and is in sliding connection with the die cavity 6 during pressing. The inner side wall of the inner mold 4 is tightly matched with the side wall of the lower mold 5 during pressing, and the inner side wall of the inner mold 4 is separated from the side wall of the lower mold 5 during mold opening.
The inner die 4 comprises at least two unit inner modules, the outer side wall of each unit inner module is in sliding fit with the lower die holder 2, and the inner aperture of the inner die 4 is larger than that of the inner die 4 during pressing during die opening.
In this embodiment, the number of the modules in the unit is three, and the modules are uniformly distributed along the circumferential direction.
The matching surface of the lower die holder 2 and the inner die 4 is a conical surface, the outer side wall of the corresponding inner die 4 is also a conical surface, the inner die 4 slides to the bottom of the lower die holder 2 and is tightly matched with the lower die 5 during pressing, and the inner die 4 slides to the top of the lower die holder 2 and is separated from the lower die 5 during die opening.
The demolding mechanism further comprises a pressing plate 3, the pressing plate 3 is provided with a groove 9 with the diameter larger than the maximum outer diameter of the inner mold 4, the pressing plate 3 is fixedly connected to the top of the lower mold base 2, and the groove 9 faces downwards.
The center of the bottom of the groove 9 on the pressing plate 3 is provided with a through hole, the upper end of the inner die 4 is provided with a limiting plate 7, and the limiting plate 7 is movably connected in the through hole of the pressing plate 3.
The reset structure between clamp plate 3 and centre form 4 upper end, this reset structure includes reset spring 8, and the centre form 4 top is equipped with spring hole 10, and reset spring 8 is located spring hole 10 to the upper end of reset spring 8 supports tightly with the recess 9 tank bottom of clamp plate 3, and the lower extreme of reset spring 8 supports tightly with the hole bottom of spring hole 10.
A linkage mechanism which moves the inner die 4 radially outwards and moves upwards along the lower die holder 2 while the product is ejected by opening the die is arranged between the lower die 5 and the inner die 4.
The linkage mechanism is characterized in that a T-shaped guide groove is formed in the side wall of the lower die holder 2 matched with the inner die 4, and a T-shaped guide bar which is in sliding fit with the T-shaped guide groove is arranged on the outer side wall of the inner die 4. The lower die 5 is provided with a shaft shoulder, and the shaft shoulder surface is propped against the bottom surface of the inner die 4.
The action process of the invention is as follows: before pressing, as shown in fig. 1, the inner mold 4 is located at the bottom end of the lower mold base 2 under the action of the return spring 8, and the three unit inner molds tightly hold the lower mold 5. When the lower die is ejected after pressing, the shaft shoulder on the lower die 5 acts on the bottom surface of the inner die 4 to enable the inner die 4 to ascend, the three unit inner dies can only move upwards against the inner wall of the lower die holder 2 under the action of the T-shaped guide strip and the T-shaped guide groove, and the inner side walls of the three unit inner dies slowly separate from the lower die 5 and the product propped against the lower die 5 under the action of the conical surface; when the top end of the inner mold 4 is propped against the bottom of the groove 9 of the pressing plate 3, the inner mold 4 does not move upwards any more; then, the lower die 5 is pushed up again with the shoulder until the product is ejected out of the die cavity 6, at which time the outer sidewall of the shoulder slides on the inner sidewall of the inner die block. When resetting, the lower die 5 is firstly moved downwards until the shaft shoulder slides out from the inner side wall of the inner die, and the inner die is restored to the bottom end of the lower die holder 2 under the action of the reset spring 8, so that the next round of pressing is started.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the claims, and other corresponding modifications, which would be apparent to those skilled in the art using the technical solutions and concepts of the present invention, are intended to fall within the scope of the claims.
For example, the conical surface fit between the lower die holder and the inner die can be wedge-shaped fit; the engagement of the T-shaped guide bar with the T-shaped guide slot may also be other shapes, such as dovetails, etc.; in addition, can also set up supplementary ejection mechanism in lower mould department, like the structure of spring plus ball, this supplementary ejection mechanism level sets up, and the one end of spring supports tightly with the hole bottom that radial set up on the lower mould, and the other end of spring supports tightly with the inside wall of centre form all the time through the ball, so, can assist the lower mould to carry out a radial thrust effect to the centre form when the die sinking, makes things convenient for the release of centre form and product more.
Claims (1)
1. A demoulding mechanism of a powder pressing forming machine, which comprises a lower mould (5), a lower mould base (2) and an upper mould (1); the method is characterized in that: the die comprises a die body, a lower die (5) and an upper die (1), wherein the lower die (4) is arranged on the die body, the lower die (5) is arranged in the die body, the lower die (5) is connected with the lower die (2) in a sliding mode, a die cavity (6) is formed between the lower die (5) and the inner die (4), and the upper die (1) is arranged right above the die cavity (6) and is connected in the die cavity (6) in a sliding mode during pressing; the inner side wall of the inner mold (4) is tightly matched with the side wall of the lower mold (5) during pressing, and the inner side wall of the inner mold (4) is separated from the side wall of the lower mold (5) during mold opening;
the inner die (4) comprises at least two unit inner modules, the outer side wall of each unit inner module is in sliding fit with the lower die holder (2), and the inner aperture of the inner die (4) is larger than that of the inner die (4) during pressing when the die is opened;
the number of the modules in the unit is three, and the modules are uniformly distributed along the circumferential direction;
the matching surface of the lower die holder (2) and the inner die (4) is a conical surface, the outer side wall of the corresponding inner die (4) is also a conical surface, the inner die (4) slides to the bottom of the lower die holder (2) and is tightly matched with the lower die (5) during pressing, and the inner die (4) slides to the top of the lower die holder (2) and is separated from the lower die (5) during die opening;
the demolding mechanism further comprises a pressing plate (3), wherein the pressing plate (3) is provided with a groove (9) with the diameter larger than the maximum outer diameter of the inner mold (4), the pressing plate (3) is fixedly connected to the top of the lower mold base (2), and the groove (9) faces downwards;
a through hole is formed in the center of the bottom of the groove (9) on the pressing plate (3), a limiting plate (7) is arranged at the upper end of the inner die (4), and the limiting plate (7) is movably connected in the through hole of the pressing plate (3);
a reset structure is arranged between the pressing plate (3) and the upper end of the inner die (4), the reset structure comprises a reset spring (8), a spring hole (10) is formed in the top end of the inner die (4), the reset spring (8) is positioned in the spring hole (10), the upper end of the reset spring (8) is abutted against the bottom of a groove (9) of the pressing plate (3), and the lower end of the reset spring (8) is abutted against the bottom of the spring hole (10);
a linkage mechanism which moves the inner die (4) radially outwards and moves upwards along the lower die seat (2) when the lower die (5) and the inner die (4) are opened to eject products is arranged between the lower die;
the linkage mechanism is characterized in that a T-shaped guide groove is formed in the side wall of the lower die holder (2) matched with the inner die (4), and a T-shaped guide bar matched with the T-shaped guide groove in a sliding manner is arranged on the outer side wall of the inner die (4); the lower die (5) is provided with a shaft shoulder, and the shaft shoulder surface is propped against the bottom surface of the inner die (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811153800.1A CN109177298B (en) | 2018-09-30 | 2018-09-30 | Demoulding mechanism of powder press forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811153800.1A CN109177298B (en) | 2018-09-30 | 2018-09-30 | Demoulding mechanism of powder press forming machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109177298A CN109177298A (en) | 2019-01-11 |
| CN109177298B true CN109177298B (en) | 2023-09-05 |
Family
ID=64907874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811153800.1A Active CN109177298B (en) | 2018-09-30 | 2018-09-30 | Demoulding mechanism of powder press forming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109177298B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11151733A (en) * | 1997-11-21 | 1999-06-08 | Apic Yamada Corp | Transfer mold apparatus |
| CN1480278A (en) * | 2003-07-15 | 2004-03-10 | 华南理工大学 | Die holder for forming multilayer templets in powder compacting |
| JP2007222879A (en) * | 2006-02-21 | 2007-09-06 | Toyota Motor Corp | Die for powder molding and powder molding method |
| CN203185666U (en) * | 2013-02-21 | 2013-09-11 | 扬州天禾科技实业有限公司 | Downward-pressing and demolding mechanism of bi-directional powder pressing forming machine |
| CN203649265U (en) * | 2013-12-12 | 2014-06-18 | 无锡透平叶片有限公司 | Large combination type double-ejection mould structure |
| CN204019686U (en) * | 2014-09-05 | 2014-12-17 | 袁利民 | The one-in-and-one-out Bidirectional mobile brick press die of the preliminary compacting of band |
-
2018
- 2018-09-30 CN CN201811153800.1A patent/CN109177298B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11151733A (en) * | 1997-11-21 | 1999-06-08 | Apic Yamada Corp | Transfer mold apparatus |
| CN1480278A (en) * | 2003-07-15 | 2004-03-10 | 华南理工大学 | Die holder for forming multilayer templets in powder compacting |
| JP2007222879A (en) * | 2006-02-21 | 2007-09-06 | Toyota Motor Corp | Die for powder molding and powder molding method |
| CN203185666U (en) * | 2013-02-21 | 2013-09-11 | 扬州天禾科技实业有限公司 | Downward-pressing and demolding mechanism of bi-directional powder pressing forming machine |
| CN203649265U (en) * | 2013-12-12 | 2014-06-18 | 无锡透平叶片有限公司 | Large combination type double-ejection mould structure |
| CN204019686U (en) * | 2014-09-05 | 2014-12-17 | 袁利民 | The one-in-and-one-out Bidirectional mobile brick press die of the preliminary compacting of band |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109177298A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208944987U (en) | A kind of stamping die equipped with delayed ejector mechanism | |
| CN102019397A (en) | Draw hook-type two-stage ejection die mechanism | |
| CN109177298B (en) | Demoulding mechanism of powder press forming machine | |
| CN210910790U (en) | Die device | |
| CN109822032B (en) | Unidirectional pressurized multidirectional hot die forging die structure | |
| CN103909630B (en) | Ejector sleeve ejecting mechanism | |
| CN110126213B (en) | Secondary demolding device and secondary demolding method | |
| CN107838356B (en) | Demoulding mechanism of press | |
| CN103707469B (en) | Plastic injection mould for mobile phone shell | |
| CN202572814U (en) | Injection mold | |
| CN216992904U (en) | Fixed die inclined ejection mechanism of injection mold | |
| CN211279574U (en) | Sliding block device with ejection mechanism | |
| CN104859109A (en) | Lock pin type secondary ejection mechanism | |
| CN112659491B (en) | Multifunctional sliding block structure and injection mold thereof | |
| CN210552786U (en) | Swing rod secondary ejection core-pulling structure | |
| CN202607986U (en) | Steel ball type secondary demoulding mechanism for injection mould | |
| CN201712092U (en) | Secondary ejection and forced demolding mechanism | |
| CN102285034A (en) | Secondary ejection forced release mechanism | |
| CN102626976A (en) | Ejection block lever type secondary demolding mechanism for injection mold | |
| CN107877776B (en) | Injection mold and injection molding method using same | |
| CN209699934U (en) | The demoulding mechanism of powder pressing machine | |
| CN211279561U (en) | Injection mold of mobile phone dustproof plug | |
| CN221271919U (en) | Push plate demoulding mechanism of injection mould | |
| CN216031928U (en) | Automobile central channel framework demolding mechanism | |
| CN108907084B (en) | Sand core mould with material returning function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240626 Address after: 315600 no.218 Fengshan Road, Qiaotou Hu Street, Ninghai County, Ningbo City, Zhejiang Province Patentee after: Ningbo Wuzhong Yuanjing Biomass Technology Co.,Ltd. Country or region after: China Address before: 315600 no.218 Fengshan Road, Qiaotou Hu Street, Ninghai County, Ningbo City, Zhejiang Province Patentee before: NINGBO WUZHONG MATERIALS SCIENCE RESEARCH CENTER Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |