CN210910940U - Rotary forming die assembly - Google Patents
Rotary forming die assembly Download PDFInfo
- Publication number
- CN210910940U CN210910940U CN201921050180.9U CN201921050180U CN210910940U CN 210910940 U CN210910940 U CN 210910940U CN 201921050180 U CN201921050180 U CN 201921050180U CN 210910940 U CN210910940 U CN 210910940U
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- die
- mold core
- core
- positioning
- hole
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Abstract
The utility model discloses a rotary forming die assembly, wherein the top of a lower die is provided with a positioning die groove, and the middle part of an upper die is provided with a through hole which runs through from top to bottom; the mold core assembly comprises an inner mold core and an outer mold core, the outer mold core is located in the mold cavity and is provided with a spiral structure which surrounds the through hole and is arranged from top to bottom, an injection molding flow channel which extends downwards from the top is arranged in the middle of the inner mold core, the lower end of the inner mold core penetrates through the through hole and extends into the middle of the outer mold core, and injection molding holes communicated with the mold cavity are formed in the side wall of the injection molding flow channel. Through the rotary forming die assembly with the optimized design, through the structural design of the double-layer die core, the inner edge of the opening in the middle of the metal plate is vulcanized to form the multi-layer buffer rubber lip, the demolding is convenient, and the secondary damage to rubber cannot be caused in the demolding process.
Description
Technical Field
The utility model relates to a forming die technical field especially relates to a rotary forming die subassembly.
Background
The flange cover is a commonly used metal component in many devices. In the process of machining the flange cover plate, a buffering connecting structure is required to be arranged at an opening in the middle of the cover plate, so that the flange cover plate and other structures can be conveniently buffered and installed. The metal plate with the mounting holes is provided with steps or grooves. Therefore, in order to ensure the buffering effect, the buffering fit between the buffering structure and the inner edge of the flange cover plate is also important. In order to ensure the connection performance of the cover plate and the rubber, the rubber is directly vulcanized on the metal cover plate, and the multilayer sealing is arranged at the same time.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution background art, the utility model provides a rotary forming die subassembly.
The utility model provides a pair of rotary forming die subassembly, include: an upper die, a lower die and a die core component;
the top of the lower die is provided with a positioning die groove, the upper die is positioned above the lower die and forms a die cavity together with the positioning die groove, and the middle part of the upper die is provided with a through hole penetrating from top to bottom;
the mold core assembly comprises an inner mold core and an outer mold core, the outer mold core is located in the mold cavity and is provided with a spiral structure which surrounds the through hole and is arranged from top to bottom, an injection molding flow channel which extends downwards from the top is arranged in the middle of the inner mold core, the lower end of the inner mold core penetrates through the through hole and extends into the middle of the outer mold core, and injection molding holes communicated with the mold cavity are formed in the side wall of the injection molding flow channel.
Preferably, the middle part of the positioning die cavity is provided with a positioning blind hole, and the lower end of the inner die core extends into the positioning blind hole.
Preferably, the outer wall of the lower end of the inner mold core is in clearance fit with the inner wall of the positioning blind hole.
Preferably, the inner wall of the lower end of the positioning die cavity is provided with an annular sealing ring.
Preferably, the outer wall of the inner mold core is provided with a spiral groove matched with the spiral structure of the outer mold core.
Preferably, the spiral groove forms a bulge on the outer wall of the inner mold core, and the injection molding hole is positioned on the bulge.
Preferably, the bottom of the upper die is provided with a pressing protrusion, and the projection of the pressing protrusion in the plane where the opening of the positioning die cavity is located in the positioning die cavity.
In the rotary forming die assembly, the top of the lower die is provided with a positioning die groove, and the middle part of the upper die is provided with a through hole which penetrates from top to bottom; the mold core assembly comprises an inner mold core and an outer mold core, the outer mold core is located in the mold cavity and is provided with a spiral structure which surrounds the through hole and is arranged from top to bottom, an injection molding flow channel which extends downwards from the top is arranged in the middle of the inner mold core, the lower end of the inner mold core penetrates through the through hole and extends into the middle of the outer mold core, and injection molding holes communicated with the mold cavity are formed in the side wall of the injection molding flow channel. Through the rotary forming die assembly with the optimized design, through the structural design of the double-layer die core, the inner edge of the opening in the middle of the metal plate is vulcanized to form the multi-layer buffer rubber lip, the demolding is convenient, and the secondary damage to rubber cannot be caused in the demolding process.
Drawings
Fig. 1 is a schematic structural view of a rotary forming die assembly according to the present invention.
Detailed Description
As shown in fig. 1, fig. 1 is a schematic structural diagram of a rotational molding die assembly according to the present invention.
Referring to fig. 1, the utility model provides a rotary forming die assembly, include: an upper die 1, a lower die 2 and a die core assembly;
the top of the lower die 2 is provided with a positioning die cavity, the upper die 1 is positioned above the lower die 2 and forms a die cavity together with the positioning die cavity, and the middle part of the upper die 1 is provided with a through hole penetrating from top to bottom;
the mold core component comprises an inner mold core 3 and an outer mold core 4, the outer mold core 4 is located in the mold cavity, the outer mold core 4 is provided with a spiral structure surrounding the through hole, the spiral structure is arranged from top to bottom, an injection molding flow channel extending downwards from the top is arranged in the middle of the inner mold core 3, the lower end of the inner mold core 3 penetrates through the through hole and extends into the middle of the outer mold core 4, and injection molding holes communicated with the mold cavity are formed in the side wall of the injection molding flow channel.
In the specific working process of the rotary forming die assembly of the embodiment, a metal plate to be vulcanized is placed in a positioning die groove in advance, an outer die core is placed in an opening in the middle of the metal plate, an upper die and a lower die are closed, the inner die core extends into the die cavity through a through hole, so that an injection molding hole of an injection molding runner on the inner die core is communicated with a spiral gap of the outer die core, injection molding of the spiral gap of the outer die core is realized through the injection molding runner, and a vulcanized multilayer spiral rubber structure is formed on the inner edge of the opening of the metal plate; during demolding, the upper die is opened to drive the inner die core, the outer die core and the metal plate to be lifted together, so that the metal plate is demolded from the positioning die groove, and then the inner die core and the outer die core are rotated to demold the formed injection molding structure from the die core.
In the embodiment, the rotary forming die assembly is provided, the top of the lower die is provided with a positioning die cavity, and the middle part of the upper die is provided with a through hole penetrating from top to bottom; the mold core assembly comprises an inner mold core and an outer mold core, the outer mold core is located in the mold cavity and is provided with a spiral structure which surrounds the through hole and is arranged from top to bottom, an injection molding flow channel which extends downwards from the top is arranged in the middle of the inner mold core, the lower end of the inner mold core penetrates through the through hole and extends into the middle of the outer mold core, and injection molding holes communicated with the mold cavity are formed in the side wall of the injection molding flow channel. Through the rotary forming die assembly with the optimized design, through the structural design of the double-layer die core, the inner edge of the opening in the middle of the metal plate is vulcanized to form the multi-layer buffer rubber lip, the demolding is convenient, and the secondary damage to rubber cannot be caused in the demolding process.
In a specific embodiment, a positioning blind hole is formed in the middle of the positioning die cavity, and the lower end of the inner die core 3 extends into the positioning blind hole, so that the positioning precision of the inner die core in the die cavity is ensured.
In a further concrete setting mode, the outer wall of the lower end of the inner mold core 3 is in clearance fit with the inner wall of the positioning blind hole, and when the injection molding is carried out, the inner mold core rotates and descends along the outer mold core, so that the injection molding hole gradually moves along a spiral clearance to carry out injection molding, and the injection molding effect is greatly improved.
In the specific implementation mode of the positioning die groove, the inner wall of the lower end of the positioning die groove is provided with the annular sealing ring 5, the inner wall of the positioning die groove is provided with the annular sealing ring, after injection molding is finished, the inner die core moves upwards, the injection molding hole is sealed and closed through the annular sealing ring, and injection molding is finished.
In the specific matching mode of the inner mold core and the outer mold core, the outer wall of the inner mold core 3 is provided with a spiral groove matched with the spiral structure of the outer mold core 4.
In a further specific embodiment, the spiral groove forms a protrusion on the outer wall of the inner mold core 3, and the injection molding hole is located on the protrusion, so that the injection molding hole is communicated with the spiral gap of the outer mold core when the inner mold core and the outer mold core are in threaded fit.
In the specific setting mode of the upper die, the bottom of the upper die 1 is provided with a pressing bulge 6, the projection of the pressing bulge 6 in the plane where the opening of the positioning die cavity is located in the positioning die cavity, and when the die is closed, the metal plate is conveniently pressed and positioned through the pressing bulge.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A rotational molding die assembly, comprising: the mold comprises an upper mold (1), a lower mold (2) and a mold core assembly;
a positioning die groove is formed in the top of the lower die (2), the upper die (1) is located above the lower die (2) and forms a die cavity together with the positioning die groove, and a through hole penetrating through the upper die (1) from top to bottom is formed in the middle of the upper die (1);
the mold core assembly comprises an inner mold core (3) and an outer mold core (4), wherein the outer mold core (4) is located in the mold cavity, the outer mold core (4) is provided with a spiral structure surrounding the through hole from top to bottom, the middle part of the inner mold core (3) is provided with an injection molding flow channel extending downwards from the top, the lower end of the inner mold core (3) penetrates through the through hole to stretch into the middle part of the outer mold core (4), and the side wall of the injection molding flow channel is provided with an injection molding hole communicated with the mold cavity.
2. The rotational molding die assembly according to claim 1, wherein the positioning die cavity is provided with a positioning blind hole in the middle, and the lower end of the inner die core (3) extends into the positioning blind hole.
3. The rotary forming die assembly according to claim 2, characterized in that the outer wall of the lower end of the inner die core (3) is in clearance fit with the inner wall of the positioning blind hole.
4. The rotary forming die assembly according to claim 1, wherein the inner wall of the lower end of the positioning die cavity is provided with an annular sealing ring (5).
5. A rotational moulding tool assembly according to claim 1, characterised in that the outer wall of the inner mould core (3) is provided with a helical groove which cooperates with the helical formation of the outer mould core (4).
6. The rotational molding die assembly according to claim 5, wherein the spiral groove forms a protrusion on the outer wall of the inner core (3), the injection molding hole being located on the protrusion.
7. The rotary forming die assembly according to claim 1, characterized in that the upper die (1) is provided at the bottom with a pressing protrusion (6), and the projection of the pressing protrusion (6) in the plane of the positioning die cavity opening is located in the positioning die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921050180.9U CN210910940U (en) | 2019-07-05 | 2019-07-05 | Rotary forming die assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921050180.9U CN210910940U (en) | 2019-07-05 | 2019-07-05 | Rotary forming die assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210910940U true CN210910940U (en) | 2020-07-03 |
Family
ID=71347188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921050180.9U Expired - Fee Related CN210910940U (en) | 2019-07-05 | 2019-07-05 | Rotary forming die assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210910940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315698A (en) * | 2019-07-05 | 2019-10-11 | 安徽天大模具有限公司 | A kind of rotational forming die assembly |
-
2019
- 2019-07-05 CN CN201921050180.9U patent/CN210910940U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315698A (en) * | 2019-07-05 | 2019-10-11 | 安徽天大模具有限公司 | A kind of rotational forming die assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 Termination date: 20210705 |