CN218196765U - Arc-shaped back-off core-pulling demoulding structure of injection mould - Google Patents
Arc-shaped back-off core-pulling demoulding structure of injection mould Download PDFInfo
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- CN218196765U CN218196765U CN202221537265.1U CN202221537265U CN218196765U CN 218196765 U CN218196765 U CN 218196765U CN 202221537265 U CN202221537265 U CN 202221537265U CN 218196765 U CN218196765 U CN 218196765U
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Abstract
The utility model discloses an injection mold arc formula back-off demoulding structure of loosing core, including cover half, movable mould, the cover half comprises from the top down fixed connection's cover half bottom plate, cover half splint in proper order. The utility model discloses, after the mould is closed, public mould benevolence and cavity benevolence form the fashioned die cavity of product, drive first mold insert through first pneumatic cylinder and stretch out the die cavity, stretch out the die cavity through second pneumatic cylinder drive second mold insert, the die cavity face of back-off structure in the circular arc forms, during the drawing of patterns, first pneumatic cylinder directly takes out first mold insert from the die cavity, the movable mould, the product is detained at public mould benevolence outer wall after the cover half separation, it does the motion that is close to relatively to drive two sets of interior slider mold inserts through second pneumatic cylinder projecting shaft withdrawal, thereby break away from the product, the action of interior slider mold insert is through setting up two sets of first gears, the second gear, make can control and move synchronously through a second pneumatic cylinder, overall structure processing method is simple, the action of loosing core is smooth and easy.
Description
Technical Field
The utility model relates to an injection mold technical field with arc-shaped back-off product especially relates to injection mold arc-shaped back-off demoulding structure of loosing core.
Background
The arc-shaped back-off refers to that the inner side wall of a plastic part is provided with an arc-shaped side bulge or side recess, when the back-off is large in depth and a material is hard, the traditional forced demolding technology cannot be adopted, an inner core-pulling structure is generally selected for achieving the purpose of smooth demolding, a common inner core-pulling structure generally adopts an inclined top form, an insert is connected with the inclined top in a sliding mode through a dovetail groove, and the insert is driven to be separated from the back-off through the dovetail groove and the inclination when the inclined top moves downwards, so that demolding is achieved.
However, the requirement on the machining precision of the oblique top form of a common part is very high, because of the existence of the inclination, a dovetail groove needs to be machined, secondary clamping is needed during cutting and machining of the slow-walking wire, and the problems of poor precision, poor seam matching and unsmooth sliding are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art, and providing an arc-shaped inverted buckle core-pulling demoulding structure of an injection mould.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the arc-shaped back-off core-pulling demoulding structure of the injection mould comprises a fixed mould and a movable mould, wherein the fixed mould consists of a fixed mould base plate and a fixed mould clamping plate which are fixedly connected in sequence from top to bottom, and the movable mould consists of a movable mould base plate, a movable mould pad, a movable mould base plate and a movable mould clamping plate which are fixedly connected in sequence from bottom to top; the female die core and the male die core are respectively and fixedly connected to the opposite sides of the fixed die clamping plate and the movable die clamping plate and used for forming an injection molding cavity after being closed, and a cavity is formed in the lower wall of the male die core; the first insert is connected to the inner side wall of the female die core in a sliding mode and used for forming a back-off outer cavity, and a first driving structure used for driving the first insert to move is arranged on the side wall of the fixed die clamping plate; the second insert is slidably connected to the inner side wall of the cavity of the male die core and used for forming a back-off inner cavity, a second driving structure used for driving the second insert to move is arranged on the side wall of the movable die base plate, and a transmission structure used for transmission is further arranged between the second driving structure and the second insert.
As a further description of the above technical solution:
first drive structure includes two sets of first pneumatic cylinders, slider base, and is two sets of first pneumatic cylinder is relative form fixed connection at cover half splint outer wall, cover half splint outer wall all is provided with the slide opening with two sets of first pneumatic cylinder relativity department, and is two sets of inside the first pneumatic cylinder projecting shaft stretched into two places slide opening respectively, and is two sets of slider base fixed connection is respectively at two sets of first pneumatic cylinders projecting shaft tip, and is two sets of slider base is in two places slide opening inside wall sliding connection respectively.
As a further description of the above technical solution:
the first mold insert comprises two sets of outer sliding block mold inserts, the two sets of outer sliding block mold inserts are fixedly connected to one side, opposite to the two sets of sliding block bases, one ends, far away from the sliding block bases, of the outer sliding block mold inserts penetrate through the left side wall and the right side wall of the cavity insert respectively and are in sliding connection with the cavity insert respectively, and springs are arranged between the opposite sides of the outer sliding block mold inserts.
As a further description of the above technical solution:
the second drive structure includes second pneumatic cylinder, drag hook plate, the second pneumatic cylinder passes through fixed plate fixed connection and is provided with the hole of stepping down at movable mould backing plate lateral wall, the relative department of movable mould backing plate lateral wall and second pneumatic cylinder, drag hook plate sliding connection is at the downthehole inside wall of stepping down, the second pneumatic cylinder stretches out tip of the shaft and drag hook plate fixed connection, the drag hook plate upper wall is provided with the tooth.
As a further description of the above technical solution:
the second mold insert includes two sets of interior slider mold inserts, and is two sets of interior slider mold insert is relative dress sliding connection at public core mould benevolence cavity inside wall, and two sets of the one end that interior slider mold insert was carried on the back mutually all runs through public core mould benevolence inside wall and sliding connection with it, and two sets of interior slider mold insert lower extreme all is provided with tooth.
As a further description of the above technical solution:
the transmission structure comprises two groups of first gears and second gears, the first gears and the second gears are distributed in a left-right mode and are connected to the inner side wall of the movable mold clamping plate in a rotating mode and located below the male mold core, the second gears are located between the two groups of first gears in a rotating mode and are meshed with the two groups of inner slide block inserts, and the first gears are meshed with the two groups of inner slide block inserts and the second gears are meshed with the pull hook plate.
The utility model discloses following beneficial effect has:
1. compared with the prior art, the arc-shaped back-off core-pulling demoulding structure of the injection mould has the advantages that after the mould is closed, the male mould core and the female mould core form a mould cavity for forming a product, the first insert is driven by the first hydraulic cylinder to extend out of the mould cavity, the second insert is driven by the second hydraulic cylinder to extend out of the mould cavity, and a mould cavity surface of the arc-shaped inner back-off structure is formed, so that the product is formed.
2. Compared with the prior art, the arc type inverted buckle core-pulling demoulding structure of the injection mould has the advantages that during demoulding, the first hydraulic cylinder directly withdraws the first insert from the cavity, so that the fixed mould and the movable mould can be separated, a separated product is buckled on the outer wall of the core mould, the second hydraulic cylinder extending shaft retracts to drive the hook plate, the hook plate drives one of the two groups of first gears, the other group of first gears are driven through meshing of the two groups of second gears, the two groups of first gears drive the two groups of inner slide inserts to move relatively, so that the product is separated, the product can be ejected out of the core mould through the top plate and the ejector rod, the inner slide inserts can be controlled and move synchronously through the two groups of first gears and the second gears, the overall structure processing mode is simple, and the core-pulling action is smooth.
Drawings
Fig. 1 is a schematic sectional view of the overall structure of an arc-shaped inverted buckle core-pulling demoulding structure of an injection mould provided by the utility model;
fig. 2 is a schematic view of a connection structure of a first hydraulic cylinder and an outer slide block insert of the arc-shaped inverted buckle core-pulling demoulding structure of the injection mould provided by the utility model;
fig. 3 is the utility model provides an injection mold circular arc formula back-off demoulding structure's product structure sketch map of loosing core.
Illustration of the drawings:
1. fixing the die clamp plate; 2. moving the mold clamping plate; 3. a movable mould base plate; 4. a cavity insert; 5. a core insert; 6. a first hydraulic cylinder; 7. a fixing plate; 8. a second hydraulic cylinder; 9. a hook plate; 10. a first gear; 11. a second gear; 12. an inner slide block insert; 13. a slider base; 14. an outer slide block insert; 15. a spring; 16. a product; 17. and an arc inner inverted buckle structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the utility model provides an injection mold arc-shaped back-off demoulding structure of loosing core: the injection mold comprises a fixed mold and a movable mold, wherein the fixed mold consists of a fixed mold bottom plate and a fixed mold clamping plate 1 which are fixedly connected in sequence from top to bottom, the movable mold consists of a movable mold bottom plate, a movable mold base plate 3 and a movable mold clamping plate 2 which are fixedly connected in sequence from bottom to top, a common top plate and a common ejector rod structure of the injection mold are also arranged between the movable mold bottom plate and the movable mold base plate 3, and a water cooling system and an injection molding runner structure are arranged on the movable mold and the fixed mold, which belong to common technologies in the market, and the application does not expand description;
the female die core 4 and the male die core 5 are respectively fixedly connected to the opposite sides of the fixed die clamping plate 1 and the movable die clamping plate 2 and used for forming an injection molding cavity after being closed, and a cavity is formed in the lower wall of the male die core 5;
sliding connection is used for forming the first mold insert of back-off outer cavity in cavity 4 inside wall, first mold insert includes two sets of outer slider mold inserts 14, two sets of outer slider mold inserts 14 are fixed connection respectively in the relative one side of two sets of slider bases 13, the one end that slider bases 13 were kept away from to two sets of outer slider mold inserts 14 runs through cavity 4 left and right sides wall respectively and sliding connection with it, be provided with spring 15 between the relative one side of two sets of outer slider mold inserts 14, when first pneumatic cylinder 6 extension shaft stretches out the maximum stroke, the one end that first pneumatic cylinder 6 was kept away from to outer slider mold insert 14 stretches into in the cavity, as the sunken department molding surface of circular arc inner back-off structure 17 on the product 16.
The side wall of the fixed die clamping plate 1 is provided with a first driving structure for driving a first insert to move, the first driving structure comprises two groups of first hydraulic cylinders 6 and a sliding block base 13, the two groups of first hydraulic cylinders 6 are oppositely and fixedly connected to the outer wall of the fixed die clamping plate 1, sliding holes are formed in the outer wall of the fixed die clamping plate 1 and opposite to the two groups of first hydraulic cylinders 6, extending shafts of the two groups of first hydraulic cylinders 6 respectively extend into the two sliding holes, the two groups of sliding block bases 13 are respectively and fixedly connected to the end parts of the extending shafts of the two groups of first hydraulic cylinders 6, the two groups of sliding block bases 13 are respectively and slidably connected with the inner side walls of the two sliding holes, and the extending and retracting actions of the extending shafts of the first hydraulic cylinders 6 drive the first insert to reset and be drawn out;
the second mold insert of die cavity in 5 cavity inside walls in public mould benevolence of sliding connection is used for forming the back-off, the second mold insert includes two sets of interior slider mold inserts 12, two sets of interior slider mold inserts 12 are adorn sliding connection relatively at 5 cavity inside walls in public mould benevolence, the one end that two sets of interior slider mold inserts 12 carried on the back mutually all runs through 5 inside walls in public mould benevolence and sliding connection with it, two sets of interior slider mold inserts 12 lower extremes all are provided with the tooth, the one end that two sets of interior slider mold inserts 12 carried on the back mutually is provided with the shaping concave surface that is used for forming 17 appearances of back-off structure in the 16 last circular arc of product.
The side wall of the movable die base plate 3 is provided with a second driving structure for driving the second insert to move, the second driving structure comprises a second hydraulic cylinder 8 and a draw hook plate 9, the second hydraulic cylinder 8 is fixedly connected to the side wall of the movable die base plate 3 through a fixing plate 7, a abdicating hole is arranged at the position of the side wall of the movable die base plate 3 opposite to the second hydraulic cylinder 8, the draw hook plate 9 is slidably connected to the inner side wall of the abdicating hole, the end part of the extending shaft of the second hydraulic cylinder 8 is fixedly connected with the draw hook plate 9, teeth are arranged on the upper wall of the draw hook plate 9, a transmission structure for transmission is arranged between the second driving structure and the second insert, the transmission structure comprises two groups of first gears 10 and second gears 11, the two groups of first gears 10 and second gears 11 are distributed leftwards and rightwards and are both rotatably connected to the inner side wall of the movable die plate 2 and are both positioned below the male die core 5, and the two groups of second gears 11 are both positioned between the two groups of first gears 10 and are engaged, two groups of first gears 10 are respectively meshed with two groups of inner slide block inserts 12, one group of the two groups of first gears 10 close to the second hydraulic cylinder 8 is meshed with the drag hook plate 9, when the extension shaft of the second hydraulic cylinder 8 extends, the first gear 10 meshed with the drag hook plate 9 is driven to rotate through the drag hook plate 9, the first gear 10 rotates and simultaneously drives the inner slide block inserts 12 meshed with the first gear to translate towards the cavity, the first gear 10 synchronously drives the second gear 11 meshed with the first gear to rotate, the other group of second gear 11 drives the rightmost group of first gear 10 to rotate, the rightmost group of first gear 10 rotates and drives the other group of inner slide block inserts 12 to translate towards the cavity, so that when the extension shaft of the second hydraulic cylinder 8 extends, the two groups of inner slide block inserts 12 are synchronously driven to move back and back, otherwise, the extension shaft of the second hydraulic cylinder 8 retracts, the two groups of inner slide block inserts 12 can be synchronously driven to move relatively close to each other.
The working principle is as follows: when the extension shaft of the first hydraulic cylinder 6 extends to the maximum stroke, one end of the outer slide block insert 14, which is far away from the first hydraulic cylinder 6, extends into the cavity and serves as a concave forming surface of the arc inner inverse structure 17 on the product 16, the extension and retraction actions of the extension shaft of the first hydraulic cylinder 6 drive the first insert to reset and draw out, the opposite ends of the two groups of inner slide block inserts 12 are provided with concave forming surfaces for forming the shape of the arc inner inverse structure 17 on the product 16, when the extension shaft of the second hydraulic cylinder 8 extends, the first gear 10 meshed with the drag hook plate 9 is driven to rotate through the drag hook plate 9, the first gear 10 rotates and simultaneously drives the inner slide block insert 12 meshed with the first gear to translate towards the cavity, the first gear 10 synchronously drives the second gear 11 meshed with the first gear 11 to rotate, the rightmost group of first gear 10 rotates and drives the other group of inner slide block inserts 12 to translate towards the cavity, so that when the extension shaft of the second hydraulic cylinder 8 extends, the two groups of inner slide blocks 12 synchronously move, otherwise, the second slide blocks 12 can move towards the inner slide block insert 8 and move synchronously.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. Injection mold circular arc formula back-off demoulding structure of loosing core, its characterized in that: the fixed die comprises a fixed die and a movable die, wherein the fixed die consists of a fixed die bottom plate and a fixed die clamping plate (1) which are fixedly connected in sequence from top to bottom, and the movable die consists of a movable die bottom plate, a movable die pad, a movable die base plate (3) and a movable die clamping plate (2) which are fixedly connected in sequence from bottom to top;
the female die core (4) and the male die core (5) are fixedly connected to the opposite sides of the fixed die clamping plate (1) and the movable die clamping plate (2) respectively and used for forming an injection molding cavity after being closed, and a cavity is formed in the lower wall of the male die core (5);
the first insert is slidably connected to the inner side wall of the female die core (4) and used for forming a back-off outer die cavity, and a first driving structure used for driving the first insert to move is arranged on the side wall of the fixed die clamping plate (1);
the die core is characterized in that the sliding connection is carried out on a second insert which is arranged on the inner side wall of a cavity of the male die core (5) and is used for forming a back-off inner die cavity, a second driving structure used for driving the second insert to move is arranged on the side wall of the movable die base plate (3), and a transmission structure used for transmission is further arranged between the second driving structure and the second insert.
2. The injection mold circular arc type back-off core-pulling demolding structure of claim 1, characterized in that: first drive structure includes two sets of first pneumatic cylinder (6), slider base (13), and is two sets of first pneumatic cylinder (6) are relative form fixed connection at cover half splint (1) outer wall, cover half splint (1) outer wall all is provided with the sliding hole with two sets of first pneumatic cylinder (6) department of being relative, and is two sets of inside first pneumatic cylinder (6) protruding shaft stretched into two places sliding hole respectively, and is two sets of slider base (13) fixed connection is respectively stretched out the shaft end portion at two sets of first pneumatic cylinder (6), and is two sets of slider base (13) are respectively in two places sliding hole inside wall sliding connection.
3. The injection mold circular arc type back-off core-pulling demolding structure of claim 2, characterized in that: the first insert comprises two groups of outer sliding block inserts (14), the two groups of outer sliding block inserts (14) are fixedly connected to one side, opposite to the two groups of sliding block bases (13), of the two groups of outer sliding block inserts (14), one end, far away from the sliding block bases (13), of each outer sliding block insert penetrates through the left side wall and the right side wall of the cavity insert (4) and is in sliding connection with the cavity insert, and a spring (15) is arranged between the two groups of outer sliding block inserts (14) on the opposite side.
4. The injection mold arc-shaped back-off core-pulling demolding structure of claim 3, characterized in that: the second drive structure includes second pneumatic cylinder (8), drag hook plate (9), second pneumatic cylinder (8) are through fixed plate (7) fixed connection at movable mould backing plate (3) lateral wall, movable mould backing plate (3) lateral wall is provided with the hole of stepping down with second pneumatic cylinder (8) department relatively, drag hook plate (9) sliding connection is at the downthehole inside wall of stepping down, second pneumatic cylinder (8) stretch out shaft end portion and drag hook plate (9) fixed connection, drag hook plate (9) upper wall is provided with the tooth.
5. The injection mold circular arc type back-off core-pulling demolding structure of claim 4, characterized in that: the second mold insert includes two sets of inner slide mold inserts (12), and is two sets of inner slide mold insert (12) are relative dress sliding connection and are in core insert (5) cavity inside wall, and are two sets of the one end that inner slide mold insert (12) carried on the back mutually all runs through core insert (5) inside wall and sliding connection with it, and is two sets of inner slide mold insert (12) lower extreme all is provided with the tooth.
6. The injection mold circular arc type back-off core-pulling demolding structure of claim 5, characterized in that: the transmission structure comprises two sets of first gears (10) and second gears (11), the first gears (10) and the second gears (11) are distributed on the left and right sides and are connected to the inner side wall of the movable mold clamping plate (2) in a rotating mode and located below the core insert (5), the second gears (11) are located between the two sets of first gears (10) in a rotating mode and are meshed with the first gears (10) and the second gears (10) in a sliding block insert (12) in two sets, and the first gears (10) are meshed with the second hydraulic cylinder (8) in one set and meshed with the drag hook plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221537265.1U CN218196765U (en) | 2022-06-20 | 2022-06-20 | Arc-shaped back-off core-pulling demoulding structure of injection mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221537265.1U CN218196765U (en) | 2022-06-20 | 2022-06-20 | Arc-shaped back-off core-pulling demoulding structure of injection mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218196765U true CN218196765U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221537265.1U Active CN218196765U (en) | 2022-06-20 | 2022-06-20 | Arc-shaped back-off core-pulling demoulding structure of injection mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218196765U (en) |
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2022
- 2022-06-20 CN CN202221537265.1U patent/CN218196765U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230821 Address after: 201100 No. 355 East Friendship Road, Xhenzhuang Town, Shanghai, Minhang District Patentee after: SHANGHAI HAN TECHNOLOGY GROUP Co.,Ltd. Address before: No. 760, Shulu Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province, 314200 Patentee before: PINGHU JIABAO MOULD MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right |