CN208322040U - The slow ejecting mechanism of die casting - Google Patents

The slow ejecting mechanism of die casting Download PDF

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Publication number
CN208322040U
CN208322040U CN201820259281.6U CN201820259281U CN208322040U CN 208322040 U CN208322040 U CN 208322040U CN 201820259281 U CN201820259281 U CN 201820259281U CN 208322040 U CN208322040 U CN 208322040U
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CN
China
Prior art keywords
thimble
ejector retainner
centre hole
radius
segment
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Active
Application number
CN201820259281.6U
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Chinese (zh)
Inventor
王丽坤
季鸭龙
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KUNSHAN BONTECK PRECISION CO Ltd
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KUNSHAN BONTECK PRECISION CO Ltd
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Priority to CN201820259281.6U priority Critical patent/CN208322040U/en
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Abstract

The utility model discloses a kind of slow ejecting mechanisms of die casting, including bottom plate and set on the second ejector retainner plate of bottom inside, it is corresponded on bottom plate and is fixed with pin at second thimble position, the second centre hole on second ejector retainner plate is three-stage: the first segment radius of the second centre hole is identical as the radius of pin, the second segment radius of second centre hole and the heavy head radius of the second thimble are identical, the third section radius of second centre hole and the thimble radius of the second thimble are identical, and the length of the second segment of the second centre hole is greater than the length in the countersunk head portion of the second thimble;When second ejector retainner plate does not eject state, the first segment that the end activity of pin passes through the second centre hole extends in the second segment of the second centre hole and overhead is on the outer end face in the countersunk head portion of the second thimble.The slow ejecting mechanism of the die casting, can effectively prevent that thimble stress is excessive thimble bending or broken needle phenomenon occurs, to improve the thimble service life, improve product processing quality, and reduce mold repair and processing cost.

Description

The slow ejecting mechanism of die casting
Technical field
The utility model relates to a kind of die casting more particularly to a kind of slow ejecting mechanisms of die casting.
Background technique
When die casting is used for shaped article, it is both needed to setting ejecting mechanism and ejects product, but on existing die casting Ejecting mechanism directly product is ejected with thimble, not only easily occur thimble bending, breakage phenomenon, influence thimble service life, And product quality is influenced, improve mold repair cost and product processing cost.
Summary of the invention
In order to overcome drawbacks described above, the utility model provides a kind of slow ejecting mechanism of die casting, can effectively avoid Thimble bending fractures, and improves thimble service life and product quality, reduces mold repair cost and product processing cost.
The utility model is to solve technical solution used by its technical problem: a kind of slow ejector of die casting Structure, including bottom plate and set on the second ejector retainner plate of the bottom inside, second ejector retainner plate is equipped with the second thimble, die casting machine Mandril passes through the bottom plate and is fixed on second ejector retainner plate, and the die casting mandril is able to drive before and after second ejector retainner plate It is mobile, it is corresponded on the bottom plate and is fixed with pin at second thimble position, the second thimble on second ejector retainner plate Hole is three-stage: the first segment radius of the second centre hole is identical as the radius of the pin, the second segment radius of the second centre hole It is identical as the heavy head radius of second thimble, the thimble radius of the third section radius of the second centre hole and second thimble It is identical, and the length of the second segment of second centre hole is greater than the length in the countersunk head portion of second thimble;Second top When needle plate does not eject state, the first segment that the end activity of the pin passes through second centre hole extends to the second centre hole Second segment in and overhead on the outer end face in the countersunk head portion of second thimble.
The first ejector retainner plate, second are successively arranged on the inside of second ejector retainner plate as a further improvement of the utility model, Rear pattern plate, the first rear pattern plate and front template are equipped with the first mould for shaped article between the front template and the first rear pattern plate Benevolence is equipped with the second mode for deslagging between first rear pattern plate and the second rear pattern plate;First ejector retainner plate is equipped with First thimble, the first thimble activity pass through second rear pattern plate and extend to the first mode of first rear pattern plate On, oil cylinder is fixed on second rear pattern plate, the oil cylinder is able to drive first ejector retainner plate and moves forward and backward will form In the product ejection in first mode;Second ejector retainner plate is fixedly connected with first rear pattern plate, second top Needle activity passes through first ejector retainner plate and extends to the second rear cavity on second rear pattern plate.
The quadrangle of first ejector retainner plate is respectively equipped with back stitching, the back stitching as a further improvement of the utility model, It is actively located in second rear pattern plate and the first rear pattern plate.
The quadrangle of second rear pattern plate is respectively equipped with guide post, the guide post as a further improvement of the utility model, It is actively located in first rear pattern plate.
Second ejector retainner plate is fixed with first rear pattern plate by connecting rod as a further improvement of the utility model, Connection.
The beneficial effects of the utility model are: the structure of cast die is also provided with the slow ejecting mechanism of die casting, pressing Casting machine mandril pushes the moment of the second ejector retainner plate setting in motion, and due to the setting of slow ejecting mechanism, the second thimble is initially located in quiet Only motionless state, only when die casting machine mandril push the second ejector retainner plate move one section after, make the countersunk head portion of the second thimble fall after rise to Stop in second centre hole, the second thimble just travels forward under the promotion of the second ejector retainner plate and carries out deslagging ejection, to prevent Thimble stress is excessive to there is thimble bending or broken needle phenomenon, improves thimble service life and product quality.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is Fig. 1 the schematic diagram of the section structure;
Fig. 3 is the portion A enlarged structure schematic diagram in Fig. 2;
Fig. 4 is the schematic diagram of the section structure when the utility model is opened;
Fig. 5 is the schematic diagram of the section structure when the first ejector retainner plate described in the utility model ejects;
The schematic diagram of the section structure when Fig. 6 is the first thimble sheet reset described in the utility model;
Fig. 7 is one of the schematic diagram of the section structure when the second ejector retainner plate described in the utility model ejects;
Fig. 8 is two of the schematic diagram of the section structure when the second ejector retainner plate described in the utility model ejects;
Fig. 9 is three of the schematic diagram of the section structure when the second ejector retainner plate described in the utility model ejects;
The schematic diagram of the section structure when Figure 10 is the second thimble sheet reset described in the utility model;
Figure 11 is that the utility model molds status diagram.
In conjunction with attached drawing, make the following instructions:
1 --- front template;2 --- the first rear pattern plate;
3 --- the second rear pattern plate;4 --- the first ejector retainner plate;
5 --- the second ejector retainner plate;6 --- bottom plate;
7 --- oil cylinder;8 --- die casting machine mandril;
9 --- connecting rod;10 --- pin;
11 --- product;31 --- guide post;
41 --- the first thimble;42 --- back stitching;
51 --- the second thimble;52 --- the second centre hole.
Specific embodiment
Below in conjunction with attached drawing, elaborate to a preferred embodiment of the utility model.But the guarantor of the utility model Shield range is not limited to following embodiments, i.e., in every case with simple made by present utility model application the scope of the patents and description Equivalent changes and modifications all still belong within the utility model patent covering scope.
Refering to fig. 1-11, be a kind of mould structure embodiment, the slow ejecting mechanism containing die casting, including bottom plate 6 with set In the second ejector retainner plate 5 of the bottom inside, second ejector retainner plate is equipped with the second thimble 51, and die casting machine mandril 8 passes through institute It states bottom plate to be fixed on second ejector retainner plate, the die casting mandril is able to drive second ejector retainner plate and is moved forward and backward, described It is corresponded on bottom plate and is fixed with pin 10 at second thimble position, the second centre hole 52 on second ejector retainner plate is three Segmentation: the first segment radius of the second centre hole is identical as the radius of the pin, the second segment radius of the second centre hole with it is described The heavy head radius of second thimble is identical, and the third section radius of the second centre hole is identical as the thimble radius of second thimble, And the length of the second segment of second centre hole is greater than the length in the countersunk head portion of second thimble;Second ejector retainner plate is not When ejection state, the first segment that the end activity of the pin passes through second centre hole extends to the second of the second centre hole In section and overhead is on the outer end face in the countersunk head portion of second thimble.
Wherein, the first ejector retainner plate 4, the second rear pattern plate 3,2 and of the first rear pattern plate are successively arranged on the inside of second ejector retainner plate Front template 1, between the front template and the first rear pattern plate be equipped with for shaped article the first mode, first rear pattern plate and The second mode for deslagging is equipped between second rear pattern plate;First ejector retainner plate be equipped with the first thimble 41, described first Thimble activity passes through second rear pattern plate and extends on the first mode of first rear pattern plate, on second rear pattern plate It is fixed with oil cylinder 7, the oil cylinder is able to drive first ejector retainner plate and moves forward and backward will take shape in first mode Product ejection;Second ejector retainner plate is fixedly connected with first rear pattern plate, and the second thimble activity passes through described first Ejector retainner plate simultaneously extends to the second rear cavity on second rear pattern plate.
In addition, the quadrangle of first ejector retainner plate is respectively equipped with back stitching 42, after the back stitching is actively located in described second In template 3 and the first rear pattern plate 2.The quadrangle of second rear pattern plate is respectively equipped with guide post 31, and the guide post is actively located in institute It states in the first rear pattern plate.Second ejector retainner plate is fixedly connected with first rear pattern plate by connecting rod 9.
The workflow of the mould structure of the slow ejecting mechanism containing die casting is as follows:
The first step, die sinking: refering to Fig. 4, die casting machine drives the first rear pattern plate 2, the second rear pattern plate 3, the first ejector retainner plate 4, the Two ejector retainner plates 5 and bottom plate 6 move out together to be separated with front template 1, realizes die sinking.
Second step, the first ejector retainner plate ejecting product: refering to Fig. 5, oil cylinder 7 drives the first ejector retainner plate 4 to travel forward, the first top The first thimble 41 on needle plate 4 ejects the product 11 in the first mode for taking shape in the first rear pattern plate 2.
Third step, the first thimble sheet reset take out product: refering to Fig. 6, oil cylinder 7 drives the first ejector retainner plate 4 to move back backward Product 11 is taken out in position.
4th step, the second ejector retainner plate eject deslagging (using delayed ejection): refering to Fig. 7-9, die casting machine mandril ejection second When ejector retainner plate 5, the second ejector retainner plate first travels forward a trip, and the second thimble is big due to the second segment length of the second centre hole In the heavy head length of the second thimble, therefore when the second ejector retainner plate starts to travel forward, the second thimble is motionless, until the second thimble Countersunk head portion behind the first segment end to the second centre hole, the second thimble just travel forward with the second ejector retainner plate, when When second thimble is moved forward in the second template with the second ejector retainner plate, since the first template and the second ejector retainner plate are fixed together simultaneously It travels forward with the second ejector retainner plate, so that the second thimble ejects the paint slag in the second mode, realizes deslagging function.
5th step, the second thimble sheet reset: refering to fig. 10, the effect of the second ejector retainner plate and the first template in die casting machine mandril Lower return.
6th step, molding: refering to fig. 11, die casting machine drives the first rear pattern plate 2, the second rear pattern plate 3, the first ejector retainner plate 4, the Inwardly movement and front template 1 mold together for two ejector retainner plates 5 and bottom plate 6, complete primary production molding.
It can be seen that the structure of cast die is also provided with the slow ejecting mechanism of die casting, the is pushed in die casting machine mandril The moment of two ejector retainner plate setting in motions, due to the setting of slow ejecting mechanism, the second thimble is initially located in stationary state, only After die casting machine mandril pushes the second ejector retainner plate to move one section, make the countersunk head portion of the second thimble fall after rise in the second centre hole only Shelves, the second thimble just travel forward under the promotion of the second ejector retainner plate and carry out deslagging ejection, to prevent thimble stress excessive out Existing thimble bending or broken needle phenomenon, improve thimble service life and product quality.

Claims (1)

1. a kind of slow ejecting mechanism of die casting, the second ejector retainner plate (5) including bottom plate (6) and on the inside of the bottom plate, institute The second ejector retainner plate is stated equipped with the second thimble (51), die casting machine mandril (8) passes through the bottom plate and is fixed on second ejector retainner plate On, the die casting machine mandril is able to drive second ejector retainner plate and is moved forward and backward, it is characterised in that: described in corresponding on the bottom plate It is fixed at second thimble position pin (10), the second centre hole (52) on second ejector retainner plate is three-stage: second The first segment radius of centre hole is identical as the radius of the pin, the second segment radius of the second centre hole and second thimble Heavy head radius is identical, and the third section radius of the second centre hole is identical as the thimble radius of second thimble, and described second The length of the second segment of centre hole is greater than the length in the countersunk head portion of second thimble;Second ejector retainner plate does not eject state When, the first segment that the end activity of the pin passes through second centre hole is extended in the second segment of the second centre hole and is pushed up It is placed on the outer end face in the countersunk head portion of second thimble.
CN201820259281.6U 2018-02-14 2018-02-14 The slow ejecting mechanism of die casting Active CN208322040U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820259281.6U CN208322040U (en) 2018-02-14 2018-02-14 The slow ejecting mechanism of die casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820259281.6U CN208322040U (en) 2018-02-14 2018-02-14 The slow ejecting mechanism of die casting

Publications (1)

Publication Number Publication Date
CN208322040U true CN208322040U (en) 2019-01-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820259281.6U Active CN208322040U (en) 2018-02-14 2018-02-14 The slow ejecting mechanism of die casting

Country Status (1)

Country Link
CN (1) CN208322040U (en)

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