CN212603161U - Flexible mechanism of loosing core of mould - Google Patents
Flexible mechanism of loosing core of mould Download PDFInfo
- Publication number
- CN212603161U CN212603161U CN202021880558.0U CN202021880558U CN212603161U CN 212603161 U CN212603161 U CN 212603161U CN 202021880558 U CN202021880558 U CN 202021880558U CN 212603161 U CN212603161 U CN 212603161U
- Authority
- CN
- China
- Prior art keywords
- core
- block
- pulling
- pulling block
- blocks
- 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
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a telescopic core-pulling mechanism of a mould, which comprises a sinking block and a core-pulling block; the core-pulling block comprises three first core-pulling blocks and three second core-pulling blocks; the first core-pulling block is in a small cutting circle shape; the three first core pulling blocks and the three second core pulling blocks are arranged at intervals, and the outer side walls jointly enclose a circular injection molding surface; the sinking block is a hexagonal column, and the top end of the sinking block is provided with a hexagonal frustum; six surfaces of the hexagonal frustum are respectively provided with dovetail grooves which are inclined from bottom to top from outside to inside; dovetail slide blocks are arranged at the positions of the first core block and the second core block corresponding to the dovetail grooves; the inclination angle of the first matching surface of the dovetail groove corresponding to the first core-pulling block is smaller than that of the second matching surface of the dovetail groove corresponding to the second core-pulling block, and the first core-pulling block and the second core-pulling block are retracted inwards when the sinking block is pulled downwards. The utility model discloses a flexible mechanism of loosing core of mould can solve the product drawing of patterns problem of all around back-off, and mechanism reasonable in design, production process is stable.
Description
Technical Field
The utility model relates to a field of moulding plastics especially relates to a flexible mechanism of loosing core of mould.
Background
When a product is provided with holes or concave-convex structures, and the demolding direction of the structures is not consistent with the demolding direction of a mold (the product structure is called as an inverted buckle), at this time, a mold lateral core-pulling mechanism is needed to ensure the integrity of the product structure, particularly, the product is inverted all around, so that the traditional lateral core-pulling mechanism cannot meet the requirement, as shown in fig. 11, the product 5 is provided with an inner cavity, annular grooves 51 are arranged at positions, close to the bottom side, of the inner cavity wall, and vertical grooves 52 are respectively arranged in opposite directions of the inner cavity wall; the core-pulling mechanism is a common mechanism in the die, the core-pulling mechanism moves along with the upper die, positioning or guiding mechanisms such as a guide block and the like are adopted, the core-pulling precision is ensured, and the die space is reduced in order to simplify the die structure.
At present, a common core pulling mechanism is driven by an oil cylinder to complete core pulling, and has various structures such as forward core pulling and reverse core pulling, and the reverse core pulling structure occupies a smaller space and has less limitation on the use space of a mold compared with the forward core pulling structure. However, the reverse core-pulling structure is relatively complex, the process part is time-consuming, the structure is complex, the manufacturing and the installation are time-consuming and labor-consuming, and the precision of the die is influenced by too many parts. The forward core pulling structure is a structure that the oil cylinder is directly driven to pull out, the structure is simple, but the oil cylinder needs certain installation control and driving stroke, so that the die is increased, the die cost is increased, and the die is required to be lifted to the site. The core pulling is a traditional core pulling mechanism, and the technology cannot solve the problem of demoulding of the product 5 which is turned upside down all around as shown in fig. 11.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a flexible mechanism of loosing core of mould can solve the product drawing of patterns problem of all around back-off, and mechanism reasonable in design, production process are stable.
The utility model provides a technical scheme that its technical problem adopted is: a telescopic core-pulling mechanism for a mould comprises a sinking block and a core-pulling block; the core-pulling block comprises three first core-pulling blocks and three second core-pulling blocks; the first core-pulling block is in a small cutting circle shape; the three first core pulling blocks and the three second core pulling blocks are arranged at intervals, and the outer side walls jointly enclose a circular injection molding surface; the sinking block is a hexagonal column, and the top end of the sinking block is provided with a hexagonal frustum; six surfaces of the hexagonal frustum are respectively provided with dovetail grooves which are inclined from bottom to top from outside to inside; dovetail slide blocks are arranged at the positions, corresponding to the dovetail grooves, of the first core block and the second core block; the inclination angle of the first matching surface of the dovetail groove corresponding to the first core pulling block is smaller than that of the second matching surface of the dovetail groove corresponding to the second core pulling block, so that when the sinking block is pulled downwards, the first core pulling block and the second core pulling block contract inwards under the action of the dovetail groove and the dovetail slide block.
The mechanism also comprises a fixed ring frame; the fixed ring frame is surrounded on the periphery of the bottom of the injection molding surface; the fixing ring frame is provided with a horizontal guide groove; the core-pulling block is also provided with a horizontal sliding block; the horizontal sliding block is assembled in the horizontal guide groove and is used for enabling the core-pulling block to act only in the horizontal direction.
The top side of the core-pulling block is also provided with an upper mold core; the upper core and the core-pulling block are matched together for injection molding of products.
The core-pulling block is also provided with a top pinhole which penetrates through the core-pulling block up and down; the thimble hole is a long hole arranged along the moving direction of the core-pulling block and used for avoiding the thimble when the core-pulling block moves.
And the core-pulling block is provided with a ring bead of a ring groove for molding a product on the injection molding surface.
And a vertical rib of a vertical groove for molding a product is arranged at the middle position of the outer side wall of one group of the first core-pulling block and the second core-pulling block which are opposite.
The utility model has the advantages that: the utility model discloses a mould flexible core-pulling mechanism, can solve the product demoulding problem of all around back-off, the mechanism design is reasonable, the production process is stable; through the matching of the dovetail groove obliquely arranged on the hexagonal frustum of the sinking block and the dovetail slide block of the core-pulling block, when the sinking block moves downwards, the core-pulling block horizontally shrinks inwards under the action of the guide groove of the fixed ring frame, so that the injection molding surface shrinks inwards to separate from the annular groove and the two vertical grooves which are reversely buckled on the whole circumference of the product, and the separation is convenient; meanwhile, the inclination angle of the first matching surface of the dovetail groove corresponding to the first core pulling block is smaller than the inclination angle of the second matching surface of the dovetail groove corresponding to the second core pulling block, so that the inward contraction speed of the second core pulling block is greater than the inward contraction speed of the first core pulling block, and the second core pulling block contracts inwards to give up a contraction space for the first core pulling block, so that the inward contraction becomes possible.
Drawings
FIG. 1 is a schematic perspective view of a mold core-pulling mechanism with a product according to an embodiment;
FIG. 2 is a perspective view of a mold telescopic core-pulling mechanism of an embodiment with an upper core removed;
FIG. 3 is a schematic perspective view of a sinker of a mold telescopic core-pulling mechanism according to an embodiment;
FIG. 4 is a schematic perspective view of a first core-pulling block of a telescopic core-pulling mechanism of a mold according to an embodiment;
FIG. 5 is a schematic perspective view of a second core-pulling block of the telescopic core-pulling mechanism of the mold according to the embodiment;
FIG. 6 is a schematic top view of the core-pulling block of FIG. 2 shown in an unretracted state;
FIG. 7 is a schematic top view of the core back block of FIG. 2 shown retracted;
FIG. 8 is a schematic top view of FIG. 1;
FIG. 9 is a schematic cross-sectional view of the core back mass A-A of FIG. 8 shown uncompressed;
FIG. 10 is a schematic cross-sectional view of the core back block A-A of FIG. 8 as it is retracted;
fig. 11 is a perspective view of the product.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Examples
As shown in fig. 1 to 11, the present embodiment provides a mold telescopic core pulling mechanism, which includes a sinking block 2 and a core pulling block 3; the core block 3 comprises three first core blocks 31 and three second core blocks 32; the first core-pulling block 31 is in a small cutting circle shape; the three first core-pulling blocks 31 and the three second core-pulling blocks 32 are arranged at intervals, and the outer side walls jointly enclose a circular injection molding surface; the sinking block 2 is a hexagonal column, and the top end of the sinking block is provided with a hexagonal frustum; six surfaces of the hexagonal frustum are respectively provided with dovetail grooves 21 which are inclined from bottom to top from outside to inside; the first core block 31 and the second core block 32 are provided with dovetail slide blocks 35 at positions corresponding to the dovetail grooves 21; the inclination angle of the first mating surface 22 of the dovetail groove 21 corresponding to the first core block 31 is smaller than the inclination angle of the second mating surface 23 of the dovetail groove 21 corresponding to the second core block 32, so that when the sinker 2 is drawn downwards, the first core block 31 and the second core block 32 are retracted inwards under the action of the dovetail groove 21 and the dovetail slide block 35.
In the mold telescopic core pulling mechanism of the embodiment, the mechanism further comprises a fixed ring frame 1; the fixed ring frame 1 surrounds the periphery side of the bottom of the injection molding surface; the fixed ring frame 1 is provided with a horizontal guide groove 11; the core block 3 also has a horizontal slider 33; the horizontal slider 33 is fitted in the horizontal guide groove 11 to allow the core back block 3 to move only in the horizontal direction.
In the telescopic core-pulling mechanism for the mold of the embodiment, an upper core 4 is further arranged on the top side of the core-pulling block 3; the upper core 4 cooperates with the core-pulling block 3 for injection moulding of the product 5.
In the telescopic core-pulling mechanism for a mold according to this embodiment, the core-pulling block 3 is further provided with a top pinhole 36 penetrating vertically; the thimble hole 36 is an elongated hole arranged along the moving direction of the core-pulling block, and is used for avoiding the thimble when the core-pulling block 3 moves.
In a mold telescopic core-pulling mechanism of the present embodiment, the core-pulling block is provided with annular ridges 34 for forming annular grooves 51 of the product 5 on the injection molding surface.
In a mold telescopic core-pulling mechanism of the present embodiment, a vertical rib 37 for forming a vertical groove 52 of a product 5 is provided at a middle position of outer side walls of a set of opposing first core-pulling block 31 and second core-pulling block 32.
In the telescopic core-pulling mechanism for the mold of the embodiment, when the sinking block is positioned at the upper limit position, the outer side walls of the first core-pulling block and the second core-pulling block and the outer side of the upper mold core jointly form the inner mold core of the product, when the mold is released, the sinking block moves downwards, and the first core block and the second core block move inwards under the action of the inclined dovetail grooves and the action of the guide grooves, the inclination angles of the first matching surface and the second matching surface of the dovetail groove are different, the second core block can contract inwards under the action of the second matching surface, thereby providing a contraction space for the inward contraction of the first core pulling block, simultaneously, the design of the long hole of the thimble hole on the core pulling block can ensure that the core pulling block avoids the thimble when moving, and the contracted core pulling block can be separated from the annular groove which is reversely buckled on the whole circumference of the product, meanwhile, the vertical rib of the core-pulling block is also separated from the vertical groove, and at the moment, the ejector pin moves upwards to eject the product out of the upper mold core.
In the telescopic core-pulling mechanism for the mold of the embodiment, a guide post 41 is fixed at the center of an upper mold core 4; the center of the sinking block 2 is also provided with a guide groove 24; the upper mold core 4 is assembled with the sinking block 2 through a guide post 41, a horizontal limiting post 42 is further arranged on the side wall of the guide post 41, and a vertical elongated hole 25 is correspondingly arranged on the side wall of the sinking block 2; the horizontal limiting column 42 penetrates through the elongated hole 25; the upper mold core 4 can only move up and down, and does not have rotational freedom under the action of the horizontal limiting column and the elongated hole, so that the positioning of the position of the upper mold core and the moving requirement of demolding are guaranteed.
The telescopic core pulling mechanism for the mold can solve the problem of demolding of products which are reversely buckled all around, and is reasonable in design and stable in production process; through the matching of the dovetail groove obliquely arranged on the hexagonal frustum of the sinking block and the dovetail slide block of the core-pulling block, when the sinking block moves downwards, the core-pulling block horizontally shrinks inwards under the action of the guide groove of the fixed ring frame, so that the injection molding surface shrinks inwards to separate from the annular groove and the two vertical grooves which are reversely buckled on the whole circumference of the product, and the separation is convenient; meanwhile, the inclination angle of the first matching surface of the dovetail groove corresponding to the first core pulling block is smaller than the inclination angle of the second matching surface of the dovetail groove corresponding to the second core pulling block, so that the inward contraction speed of the second core pulling block is greater than the inward contraction speed of the first core pulling block, and the second core pulling block contracts inwards to give up a contraction space for the first core pulling block, so that the inward contraction becomes possible.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a flexible mechanism of loosing core of mould which characterized in that: comprises a sinking block and a core-pulling block; the core-pulling block comprises three first core-pulling blocks and three second core-pulling blocks; the first core-pulling block is in a small cutting circle shape; the three first core pulling blocks and the three second core pulling blocks are arranged at intervals, and the outer side walls jointly enclose a circular injection molding surface; the sinking block is a hexagonal column, and the top end of the sinking block is provided with a hexagonal frustum; six surfaces of the hexagonal frustum are respectively provided with dovetail grooves which are inclined from bottom to top from outside to inside; dovetail slide blocks are arranged at the positions, corresponding to the dovetail grooves, of the first core block and the second core block; the inclination angle of the first matching surface of the dovetail groove corresponding to the first core pulling block is smaller than that of the second matching surface of the dovetail groove corresponding to the second core pulling block, so that when the sinking block is pulled downwards, the first core pulling block and the second core pulling block contract inwards under the action of the dovetail groove and the dovetail slide block.
2. The telescopic core-pulling mechanism for the mold as claimed in claim 1, wherein: the mechanism also comprises a fixed ring frame; the fixed ring frame is surrounded on the periphery of the bottom of the injection molding surface; the fixing ring frame is provided with a horizontal guide groove; the core-pulling block is also provided with a horizontal sliding block; the horizontal sliding block is assembled in the horizontal guide groove and is used for enabling the core-pulling block to act only in the horizontal direction.
3. The telescopic core-pulling mechanism for the mold as claimed in claim 2, wherein: the top side of the core-pulling block is also provided with an upper mold core; the upper core and the core-pulling block are matched together for injection molding of products.
4. A telescopic core-pulling mechanism for a mold according to claim 2 or 3, characterized in that: the core-pulling block is also provided with a top pinhole which penetrates through the core-pulling block up and down; the thimble hole is a long hole arranged along the moving direction of the core-pulling block and used for avoiding the thimble when the core-pulling block moves.
5. The telescopic core-pulling mechanism for the mold as claimed in claim 4, wherein: and the core-pulling block is provided with a ring bead of a ring groove for molding a product on the injection molding surface.
6. The telescopic core-pulling mechanism for the mold as claimed in claim 5, wherein: and vertical ribs of vertical grooves for molding products are arranged at the middle positions of the outer side walls of the first core-pulling block and the second core-pulling block which are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021880558.0U CN212603161U (en) | 2020-09-01 | 2020-09-01 | Flexible mechanism of loosing core of mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021880558.0U CN212603161U (en) | 2020-09-01 | 2020-09-01 | Flexible mechanism of loosing core of mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212603161U true CN212603161U (en) | 2021-02-26 |
Family
ID=74704577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021880558.0U Active CN212603161U (en) | 2020-09-01 | 2020-09-01 | Flexible mechanism of loosing core of mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212603161U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478704A (en) * | 2021-06-02 | 2021-10-08 | 鲲彤智能科技(芜湖)有限公司 | Circular back-off demoulding structure for mould |
| CN113858498A (en) * | 2021-08-31 | 2021-12-31 | 东莞市新美洋技术有限公司 | Core-releasing mechanism |
-
2020
- 2020-09-01 CN CN202021880558.0U patent/CN212603161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113478704A (en) * | 2021-06-02 | 2021-10-08 | 鲲彤智能科技(芜湖)有限公司 | Circular back-off demoulding structure for mould |
| CN113858498A (en) * | 2021-08-31 | 2021-12-31 | 东莞市新美洋技术有限公司 | Core-releasing mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212603161U (en) | Flexible mechanism of loosing core of mould | |
| CN213107990U (en) | Internal shrinkage demoulding structure for injection mould | |
| CN108407233A (en) | The de- back-off structure of week and injection mold | |
| CN111993646A (en) | Flexible mechanism of loosing core of mould | |
| CN216708225U (en) | Demoulding structure of automobile oil can cover mould | |
| CN108145910B (en) | Double-color injection mold capable of realizing parallel switching of movable mold inserts and operation method | |
| CN213440951U (en) | Plastic chassis injection mold | |
| CN210283092U (en) | Internal shrinkage core-pulling structure for spherical product | |
| CN209851469U (en) | Injection mold for processing refrigerator drawer face mask with complex structure | |
| CN202088349U (en) | Inner circle reverse buckle demolding mechanism | |
| CN114311532A (en) | Injection mold device with sectional type surrounding telescopic forming structure | |
| CN211137945U (en) | Easy maintenance scribbles storage bucket injection mold's back-off shaping and ejection mechanism | |
| CN210436538U (en) | Injection mould | |
| CN209666179U (en) | A kind of injection mold for internal screw thread demoulding | |
| CN217144752U (en) | Triple ejection die | |
| CN215095261U (en) | Injection mold of router body casing | |
| CN201120683Y (en) | Mold having sliding block mechanism | |
| CN213919442U (en) | Umbrella type inner sliding block core pulling mechanism | |
| CN210308831U (en) | Air purifier ventilation passageway capable position draw back shedder in | |
| CN215550594U (en) | Core pulling mechanism and injection mold | |
| CN110815746A (en) | Same-thread spigot buckle cover die | |
| CN217373335U (en) | Automatic finished product detaching device for injection mold | |
| CN217495057U (en) | Inclined pin inner sliding block mechanism and injection mold | |
| CN217047293U (en) | Injection mold device with sectional type surrounding telescopic forming structure | |
| CN221021950U (en) | Plastic mold slide block with inclined ejection core-pulling demoulding structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |