CN220970737U

CN220970737U - Die casting die secondary ejection mechanism

Info

Publication number: CN220970737U
Application number: CN202323001796.6U
Authority: CN
Inventors: 莫伟斌; 赵新哲
Original assignee: Kunshan Hongjuntai Precision Mold Co ltd
Current assignee: Kunshan Hongjuntai Precision Mold Co ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-05-17
Anticipated expiration: 2033-11-07

Abstract

The utility model relates to the technical field of die casting dies, in particular to a secondary ejection mechanism of a die casting die, which comprises an upper die and a lower die, wherein a die casting groove is formed in the top of the lower die, an installation cavity is formed in the lower die, and a secondary ejection assembly is arranged in the installation cavity; the secondary ejection assembly comprises a bidirectional screw rod which is transversely and movably arranged on the inner wall of the mounting cavity and provided with two sections of opposite threads, one end of the bidirectional screw rod is fixedly connected with a driving motor, two sections of opposite threads of the bidirectional screw rod are sleeved with moving blocks, the side surfaces of the moving blocks are movably connected with push rods, the end parts of the push rods are jointly and movably connected with an ejector plate, the inner wall of the die casting groove is provided with a movable groove matched with the ejector plate, the top of the ejector plate is provided with a placing groove, and a demoulding part is arranged in the placing groove; through setting up ejecting subassembly of secondary, can carry out the secondary ejecting to the product, release die casting recess with the product up to make things convenient for the staff to take fast to the product to improve the drawing of patterns efficiency of die casting product.

Description

Die casting die secondary ejection mechanism

Technical Field

The utility model relates to the technical field of die casting dies, in particular to a secondary ejection mechanism of a die casting die.

Background

The die casting is a metal casting process, and is characterized in that high pressure is applied to molten metal by utilizing a die cavity, the die is usually processed by using alloy with higher strength, the process is somewhat similar to injection molding, most die casting castings are free of iron, such as zinc, copper, aluminum, magnesium, lead, tin and lead-tin alloys and alloys thereof, and according to different die casting types, a cold chamber die casting machine or a hot chamber die casting machine is needed, and a metal plate is extruded into an ideal product by utilizing the pressing of a female die and a male die;

After the stamping of the existing die-casting die is finished, the metal plate can be extruded into the die-casting groove of the female die and is mutually attached to the side wall of the die-casting groove, so that the metal plate is taken out by manpower, time and labor are wasted, and the machining efficiency is reduced.

The prior patent (publication number: CN 215786345U) discloses a die casting device with an ejection structure, after die casting molding, a reset spring of the ejection mechanism is used for resetting and pushing a sliding sleeve to slide upwards, so that a top rod can push a top plate to slide upwards in a die casting groove, and finally, a finished product is ejected from the die casting groove, thereby realizing automatic demolding, avoiding troublesome operation of manually digging out the finished product from the die casting groove, and improving the processing efficiency.

To the above-mentioned problem, current patent gives the solution, and it utilizes reset spring to demold the finished product, but in the die casting process, the finished product can chucking in the mould intracavity of bed die, consequently, after ejecting for the first time, can not be totally ejecting with the foundry goods, makes the foundry goods still partly stay in the mould intracavity to need the manual work to take out, consequently can reduce the efficiency of production.

For this purpose, a secondary ejection mechanism for a die casting mold is proposed.

Disclosure of utility model

In view of the above, the present utility model aims to provide a secondary ejection mechanism for a die casting mold, which solves the problem that the efficiency of production is reduced because the product is clamped in the mold cavity of the lower mold during die casting, and therefore, after the primary ejection, the casting cannot be completely ejected, and the casting still remains in the mold cavity, and thus, the product needs to be manually taken out.

Based on the above purpose, the utility model provides a secondary ejection mechanism of a die-casting die, which comprises an upper die and a lower die, wherein the top of the lower die is provided with a die-casting groove, the interior of the lower die is provided with an installation cavity, and the interior of the installation cavity is provided with a secondary ejection assembly;

The secondary ejection assembly comprises a bidirectional screw rod which is transversely and movably arranged on the inner wall of the mounting cavity and provided with two sections of opposite threads, one end of the bidirectional screw rod is fixedly connected with a driving motor, two sections of opposite threads of the bidirectional screw rod are sleeved with moving blocks, the side surfaces of the moving blocks are movably connected with push rods, the end parts of the two push rods are jointly and movably connected with an ejector plate, the inner wall of the die casting groove is provided with a movable groove matched with the ejector plate, the top of the ejector plate is provided with a placing groove, and the placing groove is internally provided with a demoulding part;

The demoulding part comprises a reset spring fixedly arranged on the inner wall of the placing groove, and the top end of the reset spring is fixedly connected with a push rod which is matched with the placing groove in a sliding way.

As a further optimization scheme of the utility model, the side surface of the ejector rod is fixedly connected with a limiting block, and the inner wall of the placing groove is provided with a limiting groove matched with the limiting block.

As a further optimization scheme of the utility model, the number of the demolding parts is a plurality of groups, and the demolding parts are distributed on the ejector plate at intervals.

As a further optimization scheme of the utility model, the bottom of the moving block is fixedly connected with a guide block, and the inner bottom wall of the installation cavity is provided with a guide groove matched with the guide block.

As a further optimization scheme of the utility model, the inner wall of the mounting cavity is fixedly connected with a bearing plate, and the bearing plate is positioned at the bottom of the ejector plate.

As a further optimization scheme of the utility model, the inner wall of the mounting cavity is fixedly connected with a positioning rod, and the bottom of the ejector plate is fixedly connected with a positioning ring which moves on the outer surface of the positioning rod.

As a further optimization scheme of the utility model, the top of the ejector rod is fixedly connected with a sealing plate, and the top of the ejector plate is provided with a sealing groove matched with the sealing plate.

The utility model has the beneficial effects that:

1. According to the application, the demoulding component is arranged, and under the mutual cooperation of the reset spring, the ejector rod, the limiting block and the limiting groove, the product can be pushed to move by the ejector rod so as to demould the formed product; by arranging a plurality of groups of demoulding components, a plurality of positions of a formed product can be ejected, so that the product can be separated quickly, and the demoulding efficiency of the product is improved;

2. According to the application, the secondary ejection assembly is arranged, and under the interaction of the bidirectional screw rod, the driving motor, the moving block, the push rod and the ejection plate, the push rod can push the ejection plate upwards so as to secondarily eject a product until the product is pushed out of the die-casting groove, so that a worker can conveniently and quickly take the product, and the demolding efficiency of the die-casting product is improved; the guide block is arranged, so that the moving block can move along the horizontal direction under the guide action of the guide block, and the position of the moving block is prevented from shifting in the moving process; through setting up holding ring and locating lever, can restrict the direction of movement of ejector plate, make it remove along the vertical direction, avoid the ejector plate to take place the skew in the removal in-process position.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the utility model and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a perspective cross-sectional view of the lower die structure of the present utility model;

FIG. 3 is an enlarged view of the structure of FIG. 2A in accordance with the present utility model;

FIG. 4 is a perspective view of a secondary ejection assembly of the present utility model;

Fig. 5 is a cross-sectional view of an ejector plate structure of the present utility model.

Marked in the figure as:

In the figure: 1. an upper die; 2. a lower die; 3. die casting the groove; 4. a mounting cavity; 5. a bidirectional screw; 6. a driving motor; 7. a moving block; 8. a push rod; 9. an ejector plate; 10. a placement groove; 11. a return spring; 12. a push rod; 13. a limiting block; 14. a limit groove; 15. a guide block; 16. a guide groove; 17. a carrying plate; 18. a positioning rod; 19. a positioning ring; 20. a sealing plate; 21. and (5) sealing the groove.

Detailed Description

The present utility model will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present utility model more apparent.

It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Referring to fig. 1 to 5, the present utility model provides a technical solution:

The secondary ejection mechanism of the die-casting die comprises an upper die 1 and a lower die 2, wherein a die-casting groove 3 is formed in the top of the lower die 2, a lug matched with the die-casting groove 3 is arranged at the bottom of the upper die 1, the upper die 1 is driven by a cylinder and is clamped with the lower die 2 to perform product die-casting, an installation cavity 4 is formed in the lower die 2, and a secondary ejection assembly is arranged in the installation cavity 4;

The secondary ejection assembly comprises a bidirectional screw rod 5 which is transversely and movably arranged on the inner wall of the installation cavity 4 and provided with two sections of opposite threads, one end of the bidirectional screw rod 5 is fixedly connected with a driving motor 6, two sections of opposite threads of the bidirectional screw rod 5 are sleeved with a moving block 7, the side surface of the moving block 7 is movably connected with a push rod 8, the end parts of the two push rods 8 are jointly and movably connected with an ejector plate 9, the inner wall of the die casting groove 3 is provided with a movable groove matched with the ejector plate 9, the top of the ejector plate 9 is provided with a placing groove 10, and a demoulding part is arranged in the placing groove 10;

the demoulding part comprises a reset spring 11 fixedly arranged on the inner wall of the placing groove 10, and the top end of the reset spring 11 is fixedly connected with a push rod 12 which is in sliding fit with the placing groove 10.

By adopting the technical scheme, when the upper die 1 and the lower die 2 are used for die casting, the upper die 1 can press the ejector rod 12 to move downwards, so that the ejector rod 12 compresses the return spring 11 until the upper die 1 is clamped with the lower die 2 for finished die casting, after the finished product is formed, the upper die 1 is separated, at the moment, the return spring 11 can be reset, and the return spring 11 can drive the ejector rod 12 to move upwards until the ejector rod 12 pushes the product to move, so that the formed product is demoulded;

When the product breaks away from with die-casting recess 3, work through driving motor 6 for driving motor 6 can drive bi-directional screw 5 and rotate, thereby can drive movable block 7 and remove at the surface of bi-directional screw, and then can drive push rod 8 and remove, make push rod 8 upwards promote ejector plate 9, so that carry out the secondary to the product and push out die-casting recess 3, until with the product release, make things convenient for the staff to take fast the product, in order to improve the drawing of patterns efficiency of die-casting product.

Specifically, as shown in fig. 5, a limiting block 13 is fixedly connected to a side surface of the ejector rod 12, and a limiting groove 14 adapted to the limiting block 13 is formed in the inner wall of the placement groove 10.

Through adopting above-mentioned technical scheme, when reset spring 11 drove ejector pin 12 and removed, stopper 13 can remove in spacing groove 14 to can inject ejector pin 12's removal position, make it remove along the vertical direction.

Specifically, as shown in fig. 5, the number of the mold release members is several groups, and is distributed at intervals on the ejector plate 9.

Through adopting above-mentioned technical scheme, through setting up multiunit drawing of patterns subassembly, can ejecting to a plurality of positions of shaping product, the product of being convenient for breaks away from fast, improves the drawing of patterns efficiency of product.

Specifically, as shown in fig. 2, a guide block 15 is fixedly connected to the bottom of the moving block 7, and a guide groove 16 adapted to the guide block 15 is formed in the inner bottom wall of the installation cavity 4.

Through adopting above-mentioned technical scheme, at driving motor 6 during operation, can drive bi-directional screw 5 and rotate to drive movable block 7 and remove at its surface, make movable block 7 can remove along the horizontal direction under the direction effect of guide block 15, avoid movable block 7 to take place the skew in the removal in-process position.

Specifically, as shown in fig. 2, the inner wall of the installation cavity 4 is fixedly connected with a bearing plate 17, and the bearing plate 17 is positioned at the bottom of the ejector plate 9.

Through adopting above-mentioned technical scheme, when the top of loading board 17 and the interior diapire of die casting recess 3 are in the coplanar, the bottom of liftout plate 9 can be with the top contact of loading board 17 for bear and spacing liftout plate 9.

Specifically, as shown in fig. 3, the inner wall of the installation cavity 4 is fixedly connected with a positioning rod 18, and the bottom of the ejector plate 9 is fixedly connected with a positioning ring 19 moving on the outer surface of the positioning rod 18.

Through adopting above-mentioned technical scheme, in ejector plate 9 removal in-process, the holding ring 19 of its connection can remove at the surface of locating lever 18 to can restrict ejector plate 9's direction of movement, make it remove along the vertical direction, avoid ejector plate 9 to take place the skew at the in-process position of removing.

Specifically, as shown in fig. 5, the top of the ejector rod 12 is fixedly connected with a sealing plate 20, the top of the ejector plate 9 is provided with a sealing groove 21 matched with the sealing plate 20, when the limiting block 13 moves to the lowest end of the limiting groove 14, the sealing plate 20 can be just clamped with the sealing groove 21, and the top end of the sealing plate 20 and the bottom wall of the die-casting groove 3 are on the same plane.

Through adopting above-mentioned technical scheme, when ejector pin 12 moves down, the closing plate 20 on its top can block in seal groove 21 to can seal standing groove 10, the die casting shaping of the product of being convenient for.

Working principle: when the upper die 1 and the lower die 2 are die-cast, the upper die 1 presses the ejector rod 12 to move downwards, so that the ejector rod 12 compresses the reset spring 11 until the upper die 1 is clamped with the lower die 2, finished product die-casting is performed, after the finished product is formed, the upper die 1 is separated, at the moment, the reset spring 11 resets, and the reset spring 11 drives the ejector rod 12 to move upwards until the ejector rod 12 pushes the finished product to move, so that the formed product is demolded;

When the product breaks away from with die-casting recess 3, work through driving motor 6 for driving motor 6 drives bi-directional screw 5 and rotates, thereby drives movable block 7 and removes at the surface of bi-directional screw, and then drives push rod 8 and remove, makes push rod 8 upwards promote ejector plate 9, so that carry out the secondary to the product and push out, until release die-casting recess 3 with the product, make things convenient for the staff to take the product fast.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the utility model (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.

The present utility model is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.

Claims

1. The secondary ejection mechanism of the die-casting die comprises an upper die (1) and a lower die (2), wherein a die-casting groove (3) is formed in the top of the lower die (2), and the secondary ejection mechanism is characterized in that an installation cavity (4) is formed in the lower die (2), and a secondary ejection assembly is arranged in the installation cavity (4);

the secondary ejection assembly comprises a bidirectional screw rod (5) which is transversely and movably arranged on the inner wall of the installation cavity (4) and provided with two sections of opposite threads, one end of the bidirectional screw rod (5) is fixedly connected with a driving motor (6), two sections of opposite threads of the bidirectional screw rod (5) are sleeved with a moving block (7) in a threaded mode, the side faces of the moving block (7) are movably connected with push rods (8), the end portions of the two push rods (8) are jointly and movably connected with an ejector plate (9), a movable groove matched with the ejector plate (9) is formed in the inner wall of the die-casting groove (3), a placing groove (10) is formed in the top of the ejector plate (9), and a demolding component is arranged in the placing groove (10);

The demolding component comprises a reset spring (11) fixedly arranged on the inner wall of the placing groove (10), and the top end of the reset spring (11) is fixedly connected with a push rod (12) which is in sliding fit with the placing groove (10).

2. The secondary ejection mechanism of the die casting die according to claim 1, wherein a limiting block (13) is fixedly connected to the side surface of the ejector rod (12), and a limiting groove (14) matched with the limiting block (13) is formed in the inner wall of the placing groove (10).

3. A secondary ejection mechanism for a die casting mold according to claim 1, wherein the number of the ejection members is several groups and is distributed at intervals on the ejector plate (9).

4. The secondary ejection mechanism of the die casting mold according to claim 1, wherein a guide block (15) is fixedly connected to the bottom of the moving block (7), and a guide groove (16) matched with the guide block (15) is formed in the inner bottom wall of the mounting cavity (4).

5. The secondary ejection mechanism of a die casting mold according to claim 4, wherein the inner wall of the installation cavity (4) is fixedly connected with a bearing plate (17), and the bearing plate (17) is positioned at the bottom of the ejection plate (9).

6. The secondary ejection mechanism of a die casting mold according to claim 5, wherein the inner wall of the installation cavity (4) is fixedly connected with a positioning rod (18), and the bottom of the ejection plate (9) is fixedly connected with a positioning ring (19) moving on the outer surface of the positioning rod (18).

7. The secondary ejection mechanism of the die casting die according to claim 1, wherein a sealing plate (20) is fixedly connected to the top of the ejector rod (12), and a sealing groove (21) matched with the sealing plate (20) is formed in the top of the ejector plate (9).