CN213794209U - Novel secondary ejection powder metallurgy die - Google Patents

Abstract

The utility model belongs to the technical field of powder metallurgy, a novel ejecting powder metallurgy mould of secondary is related to, including the public mould of below and the master model of top, public mould includes the base, the thimble board that goes up and down in base top and the public mould benevolence that goes up and down in thimble board top, be fixed with a plurality of thimbles that pass public mould benevolence on the thimble board, the below of thimble board is equipped with a plurality of spring chambeies, a movable insert and a spring are acceptd in every spring chamber, the spring is inlayed needle and base centre gripping by the activity, public mould benevolence has movable chamber, the mold insert fixed block that can move about can be acceptd in the activity intracavity, the kicking block mold insert of wearing out public mould benevolence top is fixed in the top of mold insert fixed block, the below of mold insert fixed block supports the activity and inlays the needle through the kicking block crochet hook, be equipped with on the thimble board and surround the crochet hook spacing cover in the outside, the top of crochet hook spacing cover supports the below at public mould benevolence. The mold firstly uses the ejector block insert to eject a product for one time, and then uses the ejector pin to eject the product for two times, so that the mold is simple in structure, low in cost, and smooth in ejection and easy to control.

Description

Novel secondary ejection powder metallurgy die

Technical Field

The utility model relates to a powder metallurgy technical field, in particular to novel ejecting powder metallurgy mould of secondary.

Background

Secondary ejection is needed when forming powder metallurgy products with multi-layer structures on the surfaces. According to the production requirements of products, the products have top deformation after the molds are ejected once, the phenomenon of unsmooth demoulding exists, secondary ejection needs to be added, and the secondary ejection mechanism requires a smooth sequence. In the prior art, the mature mode of the secondary ejection mechanism is as follows: a secondary ejection mechanism with a limiting function, a secondary ejection mechanism in a clamping hook form, a secondary ejection mechanism adopting a resin shutter and a seesaw secondary ejection mechanism are arranged in the middle of the four needle plates. The existing commonly used secondary ejection mechanism is complex in processing of four ejector plate plus limiting and clamping hook forms and a secondary ejection mechanism of a seesaw, high in manufacturing cost, unstable in secondary ejection mechanism of a resin shutter and easy to wear and lose efficacy.

Therefore, it is necessary to design a new mold ejection structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a novel ejecting powder metallurgy die of secondary, can the cost-effective, control conveniently realize that the secondary of product is ejecting.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a novel ejecting powder metallurgy mould of secondary, includes the public mould of below and the master model of top, public mould includes the base, at the thimble board that the base top goes up and down and the public mould benevolence that goes up and down in thimble board top, be fixed with a plurality of thimbles that pass public mould benevolence on the thimble board, the below of thimble board is equipped with a plurality of spring chambeies, and a needle and a spring are inlayed in an activity is acceptd in every spring chamber, the spring is inlayed needle and base centre gripping by the activity, public mould benevolence has movable chamber, the mold insert fixed block that can move about from top to bottom is acceptd in the activity intracavity, the kicking block mold insert of wearing out public mould benevolence top is fixed in the top of mold insert fixed block, the below of mold insert fixed block supports through the kicking block crochet hook the needle activity is inlayed the needle.

Specifically, the core insert is divided into an upper insert plate and a lower insert plate, and the movable cavity is formed by splicing a lower counter bore of the upper insert plate and an upper counter bore of the lower insert plate.

Specifically, the ejector plate is divided into an ejector pin upper plate and an ejector pin lower plate, and a first flange clamped by the ejector pin upper plate and the ejector pin lower plate is arranged at the bottom of the ejector pin.

Specifically, the ejector plate is provided with a crochet hook limiting sleeve surrounding the outer side of the crochet hook of the ejector block, and the top of the crochet hook limiting sleeve is abutted to the lower part of the male die core.

Furthermore, a second flange is arranged at the bottom of the hook needle of the top block, and the bottom of the hook needle limiting sleeve abuts against the second flange.

Adopt above-mentioned technical scheme, the utility model discloses technical scheme's beneficial effect is:

the mold firstly uses the ejector block insert to eject a product for one time, and then uses the ejector pin to eject the product for two times, so that the mold is simple in structure, low in cost, and smooth in ejection and easy to control.

Drawings

FIG. 1 is a perspective view of a novel double ejection powder metallurgy die male die of an embodiment;

FIG. 2 is a cross-sectional view of the major components of the male mold;

FIG. 3 is a diagram illustrating a positional relationship between a movable insert pin and an insert fixing block;

FIG. 4 is a perspective view of a top block crochet hook;

FIG. 5 is a perspective view of the thimble;

FIG. 6 is a state diagram of the male mold main part at one ejection;

fig. 7 is a state diagram when the male mold main part is ejected twice.

The figures in the drawings represent:

1-a base;

2-thimble plate, 2 a-thimble upper plate, 2 b-thimble lower plate;

3-male die core, 3 a-upper die core plate, 3 b-lower die core plate and 31-movable cavity;

4-thimble, 41-first flange;

5-movable embedding pins;

6-a spring;

7-insert fixing block, 71-ejector block insert;

8-top block crochet hook, 81-second flange;

9-crochet hook spacing sleeve.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example (b):

as shown in fig. 1 to 7, the utility model discloses a novel ejecting powder metallurgy mould of secondary, including the public mould of below and the master model (not drawn) of top, public mould includes base 1, thimble board 2 that goes up and down in base 1 top and the public mould benevolence 3 that goes up and down in thimble board 2 top, be fixed with a plurality of thimbles 4 that pass public mould benevolence 3 on the thimble board 2, the below of thimble board 2 is equipped with a plurality of spring chambeies (not mark), a movable inlay needle 5 and a spring 6 are acceptd in every spring chamber, spring 6 is inlayed needle 5 and base 1 centre gripping by the activity, public mould benevolence 3 has movable chamber 31, the movable chamber 31 is held the mold insert fixed block 7 that can move about, the kicking block mold insert 71 of public mould benevolence 3 top is fixed to wear out in the top of mold insert fixed block 7, the below of mold insert fixed block 7 supports movable inlay needle 5 through kicking block crochet hook 8. In the mold opening process, the movable insert 5 pushes the ejector block insert 71 and the ejector plate 2 out for a certain distance at the same time under the pushing of the spring 6 until the spring 6 can not be released continuously, and the first ejection is completed. At this time, the ejector insert 71 is embedded in the product and pushes the product away from the core insert 3 together with the ejector pins 4, and the deformation of the product is within an acceptable range because the product is stressed at a plurality of positions. When the mold is opened continuously, the ejector block crochet hook 8 pulls the insert fixing block 7 to be fixed, the ejector plate 2 continues to drive the ejector pin 4 to move upwards, the ejector block insert 71 is drawn out from the product, and the second ejection is completed. The mold has the advantages of simple structure, low cost and smooth ejection and easy control.

As shown in fig. 2, 3, 6 and 7, the core insert 3 is divided into an upper insert plate 3a and a lower insert plate 3b, and the movable cavity 31 is formed by combining a lower counterbore (not labeled) of the upper insert plate 3a and an upper counterbore (not labeled) of the lower insert plate 3 b. The movable cavity 31 is conveniently machined and formed.

As shown in fig. 1 to 3, 6, and 7, the ejector plate 2 is divided into an upper ejector pin plate 2a and a lower ejector pin plate 2b, and the bottom of the ejector pin 4 is provided with a first flange 41 sandwiched by the upper ejector pin plate 2a and the lower ejector pin plate 2 b. Each thimble 4 can be completely fixed by the thimble upper plate 2a and the thimble lower plate 2b by means of the first flange 41, ensuring that all the thimbles 4 are lifted and lowered synchronously.

As shown in fig. 1 to 3, 6 and 7, the ejector plate 2 is provided with a bearded needle limiting sleeve 9 surrounding the outer side of the ejector block bearded needle 8, and the top of the bearded needle limiting sleeve 9 is abutted against the lower part of the male mold core 3. The crochet hook limiting sleeve 9 is a protection part of the ejector block crochet hook 8, and the situation that the pressure of the insert fixing block 7 is completely acted on the ejector block crochet hook 8 to cause the ejector block crochet hook to bend is avoided.

As shown in fig. 4, the bottom of the top block bearded needle 8 is provided with a second flange 81, and the bottom of the bearded needle stop sleeve 9 is abutted against the second flange 81. The top block crochet hook 8 is pressed on the movable embedding needle 5 by the crochet hook limiting sleeve 9, and the top block crochet hook 8 and the movable embedding needle 5 are ensured to be synchronously lifted all the time.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (5)

1. The utility model provides a novel ejecting powder metallurgy mould of secondary, includes the public mould of below and the master model of top, public mould includes the base, at the thimble board that the base top goes up and down and the public mould benevolence that goes up and down in thimble board top, be fixed with a plurality of thimbles that pass public mould benevolence on the thimble board, its characterized in that: the ejector pin plate is characterized in that a plurality of spring cavities are arranged below the ejector pin plate, each spring cavity accommodates a movable insert pin and a spring, the springs are clamped by the movable insert pins and the base, the male die core is provided with a movable cavity, an insert fixing block capable of moving up and down is accommodated in the movable cavity, an ejector block insert penetrating through the upper portion of the male die core is fixed above the insert fixing block, and the lower portion of the insert fixing block abuts against the movable insert pins through ejector block hooked pins.

2. The novel double ejection powder metallurgy die according to claim 1, wherein: the male die core is divided into a die core upper plate and a die core lower plate, and the movable cavity is formed by splicing a lower counter bore of the die core upper plate and an upper counter bore of the die core lower plate.

3. The novel double ejection powder metallurgy die according to claim 1, wherein: the ejector pin plate is divided into an ejector pin upper plate and an ejector pin lower plate, and a first flange clamped by the ejector pin upper plate and the ejector pin lower plate is arranged at the bottom of the ejector pin.

4. The novel double ejection powder metallurgy die according to claim 1, wherein: and a crochet hook limiting sleeve surrounding the outer side of the crochet hook of the ejector block is fixed on the ejector plate, and the top of the crochet hook limiting sleeve is propped against the lower part of the male die core.

5. The novel double ejection powder metallurgy die according to claim 4, wherein: the bottom of kicking block crochet hook is equipped with the second flange, the bottom of crochet hook stop collar supports on the second flange.

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