CN212498784U - Secondary shrinkage core structure of injection mold - Google Patents
Secondary shrinkage core structure of injection mold Download PDFInfo
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- CN212498784U CN212498784U CN202020942628.4U CN202020942628U CN212498784U CN 212498784 U CN212498784 U CN 212498784U CN 202020942628 U CN202020942628 U CN 202020942628U CN 212498784 U CN212498784 U CN 212498784U
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Abstract
The utility model discloses a secondary core structure that contracts of injection mold, include from last to down panel, water gap board, A board, B board, the core board and the bottom plate that contracts of installing in proper order, the panel is used for the mould sign indicating number mould and the placing of position circle, is provided with the injecting glue runner between water gap board and the A board, is used for sending the sizing material, and B board is used for placing the mould benevolence, contracts and is provided with the mechanism of loosing core on the core board, is used for the drawing of patterns; pulling glue is arranged between the plate B and the plate A, and a pulling force is provided between the plate B and the plate A and is used for controlling the die opening sequence; a buckle base is arranged between the shrinkage core plate and the B plate, and a pulling force is provided between the shrinkage core plate and the B plate for controlling the die opening sequence. The utility model discloses a secondary core that contracts is realized to the design of mechanism of loosing core, has solved the problem of the box class product drawing of patterns difficulty that has the back-off, has simplified the mould structure, reduces mould design and manufacturing cost, effectively avoids the product to damage, has guaranteed the normal production of product.
Description
Technical Field
The utility model relates to an injection mold technical field especially relates to an injection mold's secondary core structure that contracts.
Background
With the development of injection molding technology, the existing injection molding means can realize the one-time injection molding of more complex box products in a set of molds; referring to the specification and fig. 1, the inner side of the product a is provided with a plurality of undercuts a1, and the forming grooves for forming the undercuts a1 are generally designed on the row position; when the mold is opened, under the influence of the shape characteristics of the product, the back-off a1 core pulling of the product a needs to be completed firstly, and then the demolding action of the product is completed, otherwise, the product is easy to be deformed by pulling; however, the existing core-pulling demoulding structure can not realize effective demoulding aiming at the complex products, so that the products are damaged or difficult to demould, and the normal production of the products is interfered; on the other hand, even if the existing core-pulling demoulding structure can realize the demoulding function of the box product with the back-off, the mould structure is very complex, the mould design difficulty is high, and the cost of mould design and production is increased.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide an injection mold's secondary core structure that contracts.
The technical scheme of the utility model as follows: a secondary shrinkage core structure of an injection mold comprises a panel, a water gap plate, an A plate, a B plate, a shrinkage core plate and a bottom plate which are sequentially arranged from top to bottom; the panel is used for placing a mold stacking die and a positioning ring; a glue injection runner is arranged between the water gap plate and the plate A and is used for conveying glue; a plurality of die cores are arranged on the B plate; the shrinkage core plate is provided with a core pulling mechanism matched with the number of the die cores and used for shrinkage core demoulding;
a plurality of pulling rubbers are arranged between the plate B and the plate A, and a pulling force is provided between the plate B and the plate A to play a role in controlling the die opening sequence;
a plurality of buckling bases are arranged between the shrinkage core plate and the plate B, and a pulling force is provided between the shrinkage core plate and the plate B to play a role in controlling the die opening sequence.
Preferably, the panel is provided with a plurality of first travel pull rods; the bottoms of the first travel pull rods penetrate through the panel, and the water gap plate, the plate A, the plate B, the shrinkage core plate and the bottom plate are sequentially arranged on the first travel pull rods from top to bottom; when the mold is opened, the first stroke pull rod is abutted to the plate A to provide a pulling force for the plate A, so that the mold opening assisting effect is achieved.
Preferably, the panel is further provided with a plurality of first screw mounting grooves, a first driving screw is mounted in each first screw mounting groove, and each first driving screw penetrates through the first screw mounting groove and is fixedly arranged on the water gap plate; when the mold is opened, the first plug screw is abutted against the panel, and the panel is limited by the first plug screw.
Preferably, a plurality of second travel pull rods are arranged on the water gap plate, the bottoms of the second travel pull rods penetrate through the water gap plate, and the plate A and the plate B are sequentially arranged on the second travel pull rods from top to bottom; when the mold is opened, the second stroke pull rod is abutted to the plate A to provide a pulling force for the plate A, so that the mold opening assisting effect is achieved.
Preferably, each core pulling mechanism consists of a slide seat, a first slide insert and a plurality of second slide inserts; each line position seat is arranged on the shrinkage core plate at a position corresponding to the mold core; a first mounting groove is formed in the slide seat, the first slide insert can be placed in the first mounting groove in a vertically sliding manner, and the bottom of the first slide insert is connected with the bottom plate; the top of the first slide insert is provided with a plurality of ramps matched with the number of the second slide inserts, the positions of the slide seats corresponding to the ramps are provided with second mounting grooves, each second mounting groove is internally provided with the second slide insert in a sliding manner, each second slide insert is provided with a chute, and the first slide insert and the second slide insert are connected through the ramps and the chutes.
Preferably, the shrinkage core plate is further provided with a plurality of second screw mounting grooves, a second filling screw is mounted in each second screw mounting groove, and each second filling screw penetrates through the second screw mounting groove and is fixedly arranged on the bottom plate; when the mold is opened, the shrinkage core plate is abutted to the second plug screw, and the shrinkage core plate is limited by the second plug screw.
Preferably, a plurality of third travel pull rods are arranged on the bottom plate, the tops of the third travel pull rods penetrate through the bottom plate, and the water gap plate, the plate A, the plate B and the shrinkage core plate are sequentially arranged on the third travel pull rods from top to bottom; when the mold is opened, the plate B is abutted against the third travel pull rod, and a pulling force is provided for the plate B through the third travel pull rod, so that the effect of assisting the mold opening is achieved.
By adopting the scheme, the utility model discloses following beneficial effect has:
1. the utility model realizes secondary core shrinkage through the design of the core pulling mechanism, compared with the prior art, the utility model solves the problem that the demoulding of the box product with a back-off is difficult, simplifies the mould structure, reduces the mould design and the production cost, effectively avoids the product damage, and ensures the normal production of the product;
2. the application of the gum pulling and the button base in the preferable scheme effectively plays a role in controlling the die opening sequence.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a prior art product;
fig. 2 is a schematic perspective view of the present invention;
fig. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view taken at view A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken at view B-B of FIG. 3;
FIG. 6 is a cross-sectional view taken at view C-C of FIG. 3;
FIG. 7 is a schematic view of the three-dimensional structure of the present invention with the face plate, the water gap plate and the A plate removed;
fig. 8 is a schematic perspective view of the core pulling mechanism of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2 to 8, the utility model provides a secondary core structure that contracts of injection mold, include from last panel 1, water gap board 2, a board 3, B board 4, the core board 5 and the bottom plate 6 of contracting installed down in proper order, panel 1 is used for the placing of mould sign indicating number mould and position circle, be provided with the injecting glue runner between water gap board 2 and the A board 3 for send the sizing material, B board 4 is used for placing the mould benevolence, be provided with core pulling mechanism 7 on the core board 5 that contracts for contract the core drawing of patterns;
the panel 1 is provided with four first stroke pull rods 11, the bottoms of the four first stroke pull rods 11 penetrate through the panel 1, the water gap plate 2, the plate A3, the plate B4, the shrinkage core plate 5 and the bottom plate 6 are sequentially placed on the four first stroke pull rods 11 from top to bottom, a first stroke is arranged among the plate A3, the plate B4, the shrinkage core plate 5 and the bottom plate 6, when the first stroke pull rod 11 moves upwards to the maximum stroke of the first stroke, the first stroke pull rod 11 is abutted against the plate A3, and a tensile force is provided for the plate A3 through the first stroke pull rod 11 to play a role in assisting in opening the mold;
the panel 1 is further provided with four first screw mounting grooves preset with a first limiting stroke, a first driving screw 12 is mounted in each first screw mounting groove, each first driving screw 12 penetrates through the first screw mounting groove and is fixedly arranged on the water gap plate 2, when the panel 1 moves upwards to reach the maximum stroke of the first limiting stroke, the panel 1 is abutted against the first driving screws 12, and the first driving screws 12 play a limiting role on the panel 1;
the water gap plate 2 is provided with four second stroke pull rods 21, the bottoms of the four second stroke pull rods 21 penetrate through the water gap plate 2, the A plate 3 and the B plate 4 are sequentially placed on the four second stroke pull rods 21 from top to bottom, a second stroke is arranged between the A plate 3 and the B plate 4, when the second stroke pull rods 21 move upwards to the maximum stroke of the second stroke, the second stroke pull rods 21 are abutted against the A plate 3, and a pulling force is provided for the A plate 3 through the second stroke pull rods 21, so that an auxiliary die opening effect is achieved;
two die cores are fixed on the A plate 3, and correspondingly, die core positioning grooves are formed in the B plate 4 corresponding to the positions of the die cores and used for placing the die cores; four positioning pins are respectively arranged in each die core positioning groove, correspondingly, four positioning pin holes are correspondingly arranged at the bottom of each die core, the positions of the positioning pins correspond to the positioning pins one by one, and each positioning pin is correspondingly inserted into the positioning pin holes when the die is closed, so that the die core is positioned and fixed;
eight pulling rubbers 8 are arranged between the plate B4 and the plate A3, and a pulling force is provided between the plate B4 and the plate A3 to play a role in controlling the die opening sequence;
the shrinkage core plate 5 is provided with two core pulling mechanisms 7, and each core pulling mechanism 7 consists of a slide seat 71, a first slide insert 72 and four second slide inserts 73; a line mounting groove is formed in the position, corresponding to each mold core, of the shrinkage core plate 5, and the line seat 71 is fixedly mounted in each line mounting groove; a first mounting groove is formed in the slide seat 71, the first slide insert 72 can be slidably mounted in the first mounting groove up and down, the bottom of the first slide insert 72 sequentially penetrates through the first mounting groove and the core retracting plate 5 and is connected with the bottom plate 6, two threaded holes penetrating through the bottom of the bottom plate 6 are formed in the bottom plate 6 corresponding to the positions of the first slide inserts 72, and each first slide insert 72 is fixed by a locking screw screwed in from the two threaded holes; four sloping platforms 721 are respectively arranged on the periphery of the top of the first slide insert 72, a second mounting groove is arranged on the slide seat 71 corresponding to each sloping platform 721, a second slide insert 73 is slidably mounted in each second mounting groove, each second slide insert 73 is provided with a chute, and each second slide insert 73 is slidably mounted on the sloping platform 721 of the first slide insert 72 through the chute;
a cavity is formed among the die core, the B plate 4 and the slide seat 71 and is used for forming a product; the slide seat 71 is further provided with a back-off groove 711 below each second slide insert 73 for forming the back-off characteristics of the product;
the shrinkage core plate 5 is further provided with four second screw mounting grooves preset with a second limiting stroke, a second stop screw 51 is mounted in each second screw mounting groove, each second stop screw 51 penetrates through the second screw mounting groove and is fixedly arranged on the bottom plate 6, when the shrinkage core plate 5 moves upwards to the maximum stroke of the second limiting stroke, the shrinkage core plate 5 is abutted against the second stop screws 51, and the shrinkage core plate 5 is limited by the second stop screws 51;
two sides of the shrinkage core plate 5 and the B plate 4 are respectively provided with two buckling bases 9, a pulling force is provided between the shrinkage core plate 5 and the B plate 4, and the buckling bases 9 play a role in assisting die sinking;
still be provided with six third travel pull rods 61 on the bottom plate 6, six the top of third travel pull rod 61 is worn out bottom plate 6, water gap board 2, A board 3, B board 4 and contract core board 5 are laid in six in proper order from last to last on third travel pull rod 61, just be provided with the third stroke between A board 3 and the B board 4, when B board 4 upward movement reaches the maximum stroke of third stroke, B board 4 with third travel pull rod 61 looks butt, through third travel pull rod 61 to B board 4 provides a pulling force, plays the effect of an supplementary die sinking.
The utility model discloses working process and principle as follows:
when the product injection molding is finished, under the action of a mold opening control mechanism, a parting surface between the nozzle plate 2 and the A plate 3 is firstly opened, the nozzle plate 2 moves upwards, the second stroke pull rod 21 moves upwards along with the nozzle plate 2, the panel 1 is pushed by the nozzle plate 2 to move upwards, the first stroke pull rod 11 moves upwards along with the panel 1, and at the moment, the first stroke pull rod 11 and the second stroke pull rod 21 do not reach the maximum stroke, so that the A plate 3, the B plate 4, the shrinkage core plate 5 and the bottom plate 6 are kept still;
when the parting surface between the water gap plate 2 and the A plate 3 is completely opened, the first stroke pull rod 11 does not reach the maximum stroke, the second stroke pull rod 21 reaches the maximum stroke, the second stroke pull rod 21 is abutted against the A plate 3, the second stroke pull rod 21 provides a pulling force for the A plate 3, the parting surface between the face plate 1 and the water gap plate 2 is opened under the action of the mold opening control mechanism, the face plate 1 moves upwards, the first stroke pull rod 11 moves upwards along with the face plate 1, and the first stroke pull rod 11 still does not reach the maximum stroke at the moment, so that the water gap plate 2, the A plate 3, the B plate 4, the shrinkage core plate 5 and the bottom plate 6 are kept still;
when the parting surface between the panel 1 and the nozzle plate 2 is completely opened, the first stroke pull rod 11 reaches the maximum stroke, the first stroke pull rod 11 is abutted against the plate A3, the first stroke pull rod 11 provides a pulling force for the plate A3, at the moment, the panel 1 is abutted against the first plug screw 12, and the panel 1 provides a pulling force for the nozzle plate 2 through the first plug screw 12;
the mold opening control mechanism continuously acts on the panel 1, the panel 1 continuously moves upwards to drive the nozzle plate 2 connected with the panel through the first stop screw 12 to move upwards together, the first stroke pull rod 11 moves upwards along with the panel 1, the second stroke pull rod 21 moves upwards along with the nozzle plate 2, the A plate 3 moves upwards under the action of the pulling force provided by the first stroke pull rod 11 and the second stroke pull rod 21, at the moment, the pulling force provided by the first stroke pull rod 11 and the second stroke pull rod 21 is not enough to complete the separation of the button base 9 and break the pulling glue 8, the B plate 4 moves upwards along with the A plate 3 under the action of the pulling glue 8, the shrinkage core plate 5 moves upwards along with the B plate 4 under the action of the button base 9, and the bottom plate 6 keeps still, the parting surface between the shrinkage core plate 5 and the bottom plate 6 is opened, at this time, the slide seat 71 moves upwards along with the shrinkage core plate 5, and the second slide insert 73 moves upwards under the action of the inclined platform 721 on the first slide insert 72 and also moves transversely towards the inner side of the slide seat 71; when the shrinkage core plate 5 moves upwards to abut against the second plug screw 51, the second slide insert 73 releases the restriction on the product back-off;
under the action of the die opening control mechanism, the panel 1 continues to move upwards, the first stroke pull rod 11 and the nozzle plate 2 move upwards along with the panel 1, the second stroke pull rod 21 moves upwards along with the nozzle plate 2, the A plate 3 moves upwards under the action of the tension provided by the first stroke pull rod 11 and the second stroke pull rod 21, the tension provided by the first stroke pull rod 11 and the second stroke pull rod 21 is insufficient to break the drawing rubber 8, the B plate 4 moves upwards along with the A plate 3 under the action of the drawing rubber 8, the shrinkage core plate 5 is kept still under the action of the second plug screw 51, the button base 9 is pulled open under the action of the B plate 4, the buckling base 9 releases the restriction on the B plate 4 and the shrinkage core plate 5, the B plate 4 continues to move upwards along with the A plate 3 under the action of the drawing glue 8 along with the upward movement of the panel 1, and a parting surface between the B plate 4 and the shrinkage core plate 5 is opened to realize secondary shrinkage core operation;
when the B plate 4 moves upwards to abut against the third travel pull rod 61, the B plate 4 is kept still under the action of the third travel pull rod 61, the A plate 3 moves upwards under the action of the tension provided by the first travel pull rod 11 and the second travel pull rod 21, the pulling glue 8 is broken under the action of the tension of the A plate 3 at the moment, the constraint of the pulling glue 8 on the A plate 3 and the B plate 4 is relieved, the A plate 3 continues to move upwards under the action of the tension provided by the first travel pull rod 11 and the second travel pull rod 21 along with the continuous upward movement of the panel 1, and the parting surface between the A plate 3 and the B plate 4 is opened; when the parting surface between the A plate 3 and the B plate 4 is completely opened, the mold opening action is completely finished.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model realizes secondary core shrinkage through the design of the core pulling mechanism, compared with the prior art, the utility model solves the problem that the demoulding of the box product with a back-off is difficult, simplifies the mould structure, reduces the mould design and the production cost, effectively avoids the product damage, and ensures the normal production of the product;
2. the application of the gum pulling and the button base in the preferable scheme effectively plays a role in controlling the die opening sequence.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A secondary shrinkage core structure of an injection mold is characterized by comprising a panel, a water gap plate, an A plate, a B plate, a shrinkage core plate and a bottom plate which are sequentially arranged from top to bottom; the panel is used for placing a mold stacking die and a positioning ring; a glue injection runner is arranged between the water gap plate and the plate A and is used for conveying glue; a plurality of die cores are arranged on the B plate; the shrinkage core plate is provided with a core pulling mechanism matched with the number of the die cores and used for shrinkage core demoulding;
a plurality of pulling rubbers are arranged between the plate B and the plate A, and a pulling force is provided between the plate B and the plate A to play a role in controlling the die opening sequence;
a plurality of buckling bases are arranged between the shrinkage core plate and the plate B, and a pulling force is provided between the shrinkage core plate and the plate B to play a role in controlling the die opening sequence.
2. The secondary shrinkage core structure of an injection mold according to claim 1, wherein a plurality of first travel pull rods are arranged on the panel; the bottoms of the first travel pull rods penetrate through the panel, and the water gap plate, the plate A, the plate B, the shrinkage core plate and the bottom plate are sequentially arranged on the first travel pull rods from top to bottom; when the mold is opened, the first stroke pull rod is abutted to the plate A to provide a pulling force for the plate A, so that the mold opening assisting effect is achieved.
3. The secondary shrinkage core structure of an injection mold according to claim 2, wherein a plurality of first screw mounting grooves are further formed in the panel, a first driving screw is mounted in each first screw mounting groove, and each first driving screw penetrates through the first screw mounting groove and is fixedly arranged on the water gap plate; when the mold is opened, the first plug screw is abutted against the panel, and the panel is limited by the first plug screw.
4. The secondary shrinkage core structure of the injection mold according to claim 1, wherein a plurality of second stroke pull rods are arranged on the water gap plate, the bottoms of the second stroke pull rods penetrate through the water gap plate, and the A plate and the B plate are sequentially arranged on the second stroke pull rods from top to bottom; when the mold is opened, the second stroke pull rod is abutted to the plate A to provide a pulling force for the plate A, so that the mold opening assisting effect is achieved.
5. The secondary core structure of an injection mold according to claim 1, wherein each core pulling mechanism is composed of a slide seat, a first slide insert and a plurality of second slide inserts; each line position seat is arranged on the shrinkage core plate at a position corresponding to the mold core; a first mounting groove is formed in the slide seat, the first slide insert can be placed in the first mounting groove in a vertically sliding manner, and the bottom of the first slide insert is connected with the bottom plate; the top of the first slide insert is provided with a plurality of ramps matched with the number of the second slide inserts, the positions of the slide seats corresponding to the ramps are provided with second mounting grooves, each second mounting groove is internally provided with the second slide insert in a sliding manner, each second slide insert is provided with a chute, and the first slide insert and the second slide insert are connected through the ramps and the chutes.
6. The secondary core structure of the injection mold of claim 5, wherein a plurality of second screw mounting grooves are further formed in the core plate, a second driving screw is mounted in each second screw mounting groove, and each second driving screw penetrates through the second screw mounting groove and is fixedly arranged on the bottom plate; when the mold is opened, the shrinkage core plate is abutted to the second plug screw, and the shrinkage core plate is limited by the second plug screw.
7. The secondary shrinkage core structure of the injection mold according to claim 1, wherein a plurality of third travel pull rods are arranged on the bottom plate, tops of the third travel pull rods penetrate out of the bottom plate, and the water gap plate, the A plate, the B plate and the shrinkage core plate are sequentially arranged on the third travel pull rods from top to bottom; when the mold is opened, the plate B is abutted against the third travel pull rod, and a pulling force is provided for the plate B through the third travel pull rod, so that the effect of assisting the mold opening is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020942628.4U CN212498784U (en) | 2020-05-28 | 2020-05-28 | Secondary shrinkage core structure of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020942628.4U CN212498784U (en) | 2020-05-28 | 2020-05-28 | Secondary shrinkage core structure of injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN212498784U true CN212498784U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020942628.4U Active CN212498784U (en) | 2020-05-28 | 2020-05-28 | Secondary shrinkage core structure of injection mold |
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|---|---|
| CN (1) | CN212498784U (en) |
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- 2020-05-28 CN CN202020942628.4U patent/CN212498784U/en active Active
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