Secondary ejection die-casting die

Abstract

The utility model discloses a secondary ejection die-casting die which comprises a base, a supporting frame fixedly installed on the top of the base, a die body assembled on the top of the supporting frame and an ejection mechanism assembled at the bottom of the die body. The ejection mechanism comprises primary ejection assemblies and secondary ejection assemblies, wherein the primary ejection assemblies are assembled in the die-casting cavity and symmetrically distributed, and the secondary ejection assemblies are assembled in the die-casting cavity, located between the primary ejection assemblies and distributed in a matrix mode. According to the secondary ejection die-casting die, the vent hole can extend into the gap between the die-casting piece and the die-casting cavity, so that external air rapidly flows into the gap between the die-casting piece and the die-casting cavity, air pressure in the die-casting cavity is released, and the situation that negative pressure adsorption exists between the die-casting piece and the die-casting cavity can be avoided; the situations of jamming and deformation are effectively avoided, and the forming quality and the production efficiency of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting production, in particular to a secondary ejection die-casting die. Background Art

[0002] Die-casting molds play a vital role in the die-casting production process. Die-casting molds are tools used to cast metal parts. The die-casting process is mainly completed on a dedicated die-casting forging machine. In the field of die-casting mold technology, with the continuous improvement of product complexity and precision requirements, after the die-casting mold completes the formation of the die-casting, it is usually necessary to use an ejection structure to eject the die-casting from the mold cavity to facilitate demolding operations.

[0003] However, since the die-casting is in a close fit with the mold cavity, a negative pressure adsorption state will occur between the die-casting and the mold cavity, resulting in the traditional die-casting mold often encountering problems such as jamming and deformation during the ejection process. This not only affects the service life of the mold, but also reduces the molding quality and production efficiency of the product. For this reason, the applicant proposes a secondary ejection die-casting mold device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a secondary ejection die-casting mold to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a secondary ejection die-casting mold, comprising a base and a support frame fixedly mounted on the top of the base, a mold body assembled on the top of the support frame and an ejection mechanism assembled on the bottom of the mold body, wherein a die-casting cavity is opened inside the mold body;

[0006] The ejection mechanism includes a primary ejection assembly installed in the die-casting cavity and symmetrically distributed, and a secondary ejection assembly installed in the die-casting cavity and arranged in a matrix between the primary ejection assemblies. The primary ejection assembly includes a top seat penetrating the die-casting cavity, the interior of the top seat is provided with vents arranged equidistantly, the bottom of the top seat is provided with air inlet holes connected to the air inlet holes, a sliding block is fixedly installed at the bottom of the top seat and located on one side of the air inlet hole, a lifting plate is fixedly installed at the bottom of the sliding block, and the secondary ejection assembly includes a movable column penetrating the die-casting cavity, and a top plate is fixedly installed on the top of the movable column.

[0007] Preferably, a first ejection groove for the top seat to move up and down is opened at the bottom of the die-casting cavity, and a limiting frame is fixedly installed on one side of a second ejection groove for the top plate to move up and down is opened at the bottom of the die-casting cavity and located between the first ejection grooves, and a limiting block used in conjunction with the limiting frame is fixedly installed on the inner wall of the support frame.

[0008] Preferably, support springs are fixedly connected between the sliding block and the lifting plate, and the support springs are located on the inner side of the sliding frame and are arranged equidistantly.

[0009] Preferably, hydraulic push rods are fixedly connected between the lifting plate and the base, and the hydraulic push rods are arranged and distributed in a matrix.

[0010] Preferably, an extrusion block is fixedly installed at the bottom of the movable column, and the extrusion block and the lifting plate correspond to each other.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The secondary ejection die-casting mold can be provided with a primary ejection component and a secondary ejection component that cooperate with each other, and can use the ejector seat in the primary ejection component to eject the die-casting part from the die-casting cavity for a certain distance, so that the vent hole can be extended to the gap between the die-casting part and the die-casting cavity, and the outside air can be quickly flowed into the gap between the die-casting part and the die-casting cavity through the air inlet hole, and the air pressure in the die-casting cavity can be effectively released, and the negative pressure adsorption between the die-casting part and the die-casting cavity can be avoided, so that the secondary ejection component can smoothly eject the die-casting part from the die-casting cavity, and the jamming and deformation can be effectively avoided, thereby improving the molding quality and production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the mold body structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the one-time ejection mechanism of the utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the top seat of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the secondary ejection mechanism of the utility model.

[0020] In the figure: 1. mold body; 101. die casting cavity; 102. first ejector slot; 103. second ejector slot; 2. support frame; 201. limit block; 3. base; 4. ejector mechanism; 401. lifting plate; 402. hydraulic push rod; 403. sliding frame; 404. supporting spring; 5. primary ejector assembly; 501. ejector seat; 502. vent hole; 503. air inlet hole; 504. sliding block; 505. limit frame; 6. secondary ejector assembly; 601. ejector plate; 602. movable column; 603. extrusion block. DETAILED DESCRIPTION

[0021] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0022] See also Figure 1-6 As shown, the utility model proposes a secondary ejection die-casting mold, comprising a base 3 and a support frame 2 fixedly mounted on the top of the base 3, a mold body 1 assembled on the top of the support frame 2 and an ejection mechanism 4 assembled on the bottom of the mold body 1, a die-casting cavity 101 is opened on the inner side of the mold body 1, and the ejection mechanism 4 comprises a primary ejection component 5 assembled in the die-casting cavity 101 and symmetrically distributed, and a secondary ejection component 6 assembled in the die-casting cavity 101 and arranged in a matrix between the primary ejection components 5, and the primary ejection component 101 is provided with a plurality of ejection components 5 arranged in a plurality of symmetrically distributed primary ejection components 5. The component 5 includes a top seat 501 that passes through the die-casting cavity 101, and the interior of the top seat 501 is provided with vent holes 502 that are arranged at equal intervals. The bottom of the top seat 501 is provided with air inlet holes 503 that are connected to the air inlet holes 502. A sliding block 504 is fixedly installed at the bottom of the top seat 501 and on one side of the air inlet hole 503, and a lifting plate 401 is fixedly installed at the bottom of the sliding block 504. The secondary ejection component 6 includes a movable column 602 that passes through the die-casting cavity 101, and a top plate 601 is fixedly installed on the top of the movable column 602.

[0023] Based on the above-mentioned structural setting, the secondary ejection die-casting mold is composed of a mold body 1, a support frame 2, a base 3, and an ejection mechanism 4, wherein the base 3 can be used to conveniently install the device at a suitable position on the die-casting machine, the support frame 2 can support the mold body 1, and the ejection mechanism 4 can eject the die-casting in the mold body 1 once and then eject it twice, which can effectively avoid the occurrence of jamming and deformation, and improve the molding quality and production efficiency of the product. Specifically, in the working process, the base 3 is fixed at a suitable position on the die-casting machine by opening mounting holes on the four corners of the base 3, and the molding operation is performed by introducing the molten metal liquid into the die-casting cavity 101. After the molding is completed, the lifting plate 401 is driven to move upward, which can push the top seat 501 to move upward, so that the top seat 501 can be extended into the die-casting cavity 101. The die-casting in the die-casting cavity 101 can be ejected for the first time, so that the die-casting is ejected from the die-casting cavity 101 by a certain distance, and the vent hole 502 can be extended to the gap between the die-casting and the die-casting cavity 101, and the outside air can be quickly flowed into the gap between the die-casting and the die-casting cavity 101 through the air inlet hole 503, and the air pressure in the die-casting cavity 101 can be effectively released, and the negative pressure adsorption between the die-casting and the die-casting cavity 101 can be avoided, which provides convenience for the subsequent secondary ejection. By continuing to move upward through the lifting plate 401, the lifting plate 401 can be brought into contact with the secondary ejection assembly 6, which can drive the movable column 602 to move upward, and the top plate 601 can be used to completely and smoothly eject the die-casting in the die-casting cavity 101, which can effectively avoid the die-casting from being stuck and deformed, thereby improving the molding quality and production efficiency of the product.

[0024] Furthermore, a first ejection groove 102 for the top seat 501 to move up and down is provided at the bottom of the die-casting cavity 101, and a second ejection groove 103 for the top plate 601 to move up and down is provided at the bottom of the die-casting cavity 101 and between the first ejection grooves 102. The top seat 501 can move up and down in the first ejection groove 102, so that the top seat 501 and the first ejection groove 102 can form the same horizontal plane, and the top seat 501 and the first ejection groove 102 can be formed into one body, and the top plate 601 can be moved through the second ejection groove 103, so that the top plate 601 can be formed into one body with the second ejection groove 103, and the bottom of the die-casting cavity 101 can be effectively formed into an integrated plane without affecting the normal die-casting operation.

[0025] Furthermore, a limit frame 505 is fixedly installed on one side of the sliding block 504, and a limit block 201 used in conjunction with the limit frame 505 is fixedly installed on the inner wall of the support frame 2. After the top seat 501 is pushed upward by the sliding block 504 through the lifting plate 401 for a certain distance, the limit frame 505 can be brought into contact with the limit block 201, and the limit block 201 can form a blocking effect on the limit frame 505, so that the top seat 501 will not continue to move upward after extending to the die casting cavity 101, and the lifting plate 401 can continue to push the secondary ejection assembly 6 upward to move, so that the secondary ejection assembly 6 can push the die casting to perform a complete demolding operation.

[0026] Furthermore, support springs 404 are fixedly connected between the sliding block 504 and the lifting plate 401, and the support springs 404 are arranged equidistantly on the inner side of the sliding frame 403. The support force of the support springs 404 can push the sliding block 504 to move upward when the lifting plate 401 moves upward, and the telescopic effect of the support springs 404 can enable the lifting plate 401 to continue to move upward when the sliding block 504 stops moving.

[0027] Furthermore, a hydraulic push rod 402 is fixedly connected between the lifting plate 401 and the base 3, and the hydraulic push rod 402 is arranged in a matrix. The hydraulic push rod 402 can provide power for the lifting plate 401, and can conveniently drive the lifting plate 401 to move up and down.

[0028] Furthermore, a squeezing block 603 is fixedly installed at the bottom of the movable column 602, and the squeezing block 603 corresponds to the lifting plate 401. When the lifting plate 401 moves upward and contacts the squeezing block 603, the squeezing block 603 can support the movable column 602, so that the lifting plate 401 can stably push the top plate 601 upward to push the die casting out of the die casting cavity 101, thereby achieving a secondary ejection effect.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A secondary ejection die casting mold, characterized in that: The mold body (1) comprises a base (3) and a support frame (2) fixedly mounted on the top of the base (3), a mold body (1) mounted on the top of the support frame (2), and an ejection mechanism (4) mounted on the bottom of the mold body (1), wherein a die-casting cavity (101) is provided on the inner side of the mold body (1); The ejection mechanism (4) comprises a primary ejection assembly (5) which is mounted in the die casting cavity (101) and is symmetrically distributed, and a secondary ejection assembly (6) which is mounted in the die casting cavity (101) and is located between the primary ejection assemblies (5) and is arranged in a matrix. The primary ejection assembly (5) comprises a top seat (501) which passes through the die casting cavity (101), and the top seat (501) is provided with vent holes (502) which are arranged in an equidistant manner. 1) is provided with an air inlet hole (503) in communication with the air vent (502), a sliding block (504) is fixedly installed at the bottom of the top seat (501) and located on one side of the air inlet hole (503), a lifting plate (401) is fixedly installed at the bottom of the sliding block (504), and the secondary ejection assembly (6) includes a movable column (602) penetrating the die-casting cavity (101), and a top plate (601) is fixedly installed on the top of the movable column (602).

2. The secondary ejection die casting mold according to claim 1, characterized in that: A first ejection groove (102) for the top seat (501) to move up and down is provided at the bottom of the die-casting cavity (101), and a second ejection groove (103) for the top plate (601) to move up and down is provided at the bottom of the die-casting cavity (101) and between the first ejection grooves (102).

3. The secondary ejection die-casting mold according to claim 1, characterized in that: A limiting frame (505) is fixedly mounted on one side of the sliding block (504), and a limiting block (201) used in conjunction with the limiting frame (505) is fixedly mounted on the inner wall of the supporting frame (2).

4. The secondary ejection die-casting mold according to claim 1, characterized in that: Support springs (404) are fixedly connected between the sliding block (504) and the lifting plate (401), and the support springs (404) are located on the inner side of the sliding frame (403) and are arranged in an equidistant manner.

5. The secondary ejection die casting mold according to claim 1, characterized in that: A hydraulic push rod (402) is fixedly connected between the lifting plate (401) and the base (3), and the hydraulic push rods (402) are arranged and distributed in a matrix.

6. The secondary ejection die casting mold according to claim 1, characterized in that: An extrusion block (603) is fixedly mounted on the bottom of the movable column (602), and the extrusion block (603) corresponds to the lifting plate (401).

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