Ejection structure of mold

Abstract

The utility model discloses an ejection structure of a mold, relates to the technical field of molds, and aims to solve the problems that in the prior art, when the mold is opened, the mold does not have the capability of automatically ejecting a product, and the practicability is poor. A lower die is fixedly installed above the bottom plate, side plates are symmetrically and fixedly installed on the two sides of the lower die respectively, an upper die is arranged above the lower die, a surrounding plate is arranged above the lower die along the outer side of the upper die, a bottom cavity is formed in the lower die, a flat plate is arranged in the bottom cavity, and a pressing plate is arranged in the flat plate. A compression spring is fixedly installed below the flat plate, column holes are symmetrically formed in the two sides of the upper portion of the bottom cavity in the lower die correspondingly and communicate with the bottom cavity, two rod holes are formed in the upper portion of the bottom cavity in the lower die, and stand columns are symmetrically and fixedly installed on the two sides of the upper portion of the flat plate correspondingly and communicate with the column holes. The upper end of the stand column extends into the column hole, and a push rod is fixedly installed above the flat plate.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an ejection structure of a mold. Background Art

[0002] Mold is a tool widely used in industrial production. Molds are mainly composed of various parts, including mold base, mold core and guide design. They usually consist of two parts, namely movable mold and fixed mold. These two parts can be separated to take out the parts, or closed to allow the blank to be injected into the mold cavity for forming. Molds are widely used in many industries such as manufacturing parts, plastic products, textiles, metal products, etc.

[0003] For example, the patent with announcement number CN220362853 (a kind of ejector knot of mold): comprises a mold base and an ejector pin, the mold base is provided with a mold body on the top, a cavity is provided in the mold base, a protective component for preventing product damage is provided in the cavity, a guide component for preventing the ejector pin from shaking is provided in the cavity, and the protective component comprises a push plate provided in the cavity, a fixing rod respectively fixedly connected to both sides of the top of the push plate, a groove provided in the top of the fixing rod, a sliding rod provided in the groove, and a contact fixedly connected to one end of the sliding rod;

[0004] Although the above-mentioned prior art can prevent the product from being deformed during ejection, the ejection of the product is driven by the activation of the electric telescopic rod, and thus the product cannot be automatically ejected when the mold is opened, and the practicality is poor. Therefore, the market urgently needs to develop a mold ejection structure to help people solve the existing problems. Utility Model Content

[0005] The utility model aims to provide a mold ejection structure to solve the problem of poor practicality in that the structure has no ability to automatically eject products when the mold is opened, as mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kind of ejection structure of a mold, comprising a bottom plate, a lower mold is fixedly installed on the top of the bottom plate, side plates are symmetrically fixedly installed on both sides of the lower mold, an upper mold is arranged on the top of the lower mold, a surrounding plate is arranged on the top of the lower mold along the outer side of the upper mold, a bottom cavity is arranged inside the lower mold, a flat plate is arranged inside the bottom cavity, a compression spring is fixedly installed below the flat plate, column holes are symmetrically arranged on both sides above the bottom cavity in the interior of the lower mold, and the column holes are connected with the bottom cavity, a rod hole is arranged on the interior of the lower mold along the top of the bottom cavity, and two rod holes are arranged, columns are symmetrically fixedly installed on both sides above the flat plate, the upper ends of the columns extend into the interior of the column holes, push rods are fixedly installed on the top of the flat plate, and two push rods are arranged, and the upper ends of the two push rods extend into the corresponding rod holes respectively.

[0007] Preferably, a conical groove is provided inside the lower mold along the top of the rod hole, and the conical groove is connected to the rod hole, a push head is provided inside the conical groove, and the push head is welded to the push rod, and the push head is an inverted cone.

[0008] Preferably, a rubber block is fixedly installed in the middle above the flat plate.

[0009] Preferably, a sealing plate is provided below the bottom cavity, and the sealing plate is fixedly connected to the lower mold by screws.

[0010] Preferably, a guide sleeve is provided inside the column hole along the outer side of the column, and the guide sleeve is fixedly connected to the lower mold.

[0011] Preferably, the lower mold and the upper mold are closed to form a molding cavity, a pouring hole is provided inside the upper mold along the top of the molding cavity, and the pouring hole is connected to the molding cavity, and a top plate is fixedly installed above the upper mold.

[0012] Preferably, an annular groove is provided above the outer side of the upper mold, a square frame 1 is provided inside the annular groove along the outer side of the upper mold, and the square frame 1 is fixedly connected to the upper mold, and a square frame 2 is provided below the square frame 1, and the square frame 2 is fixedly connected to the enclosure.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges a bottom cavity inside the lower mold, and a compression spring, a flat plate, a column and a push rod inside the bottom cavity. When the lower mold and the upper mold are closed, the surrounding plate presses down the column to retract the column into the lower mold, driving the flat plate to move downward, and the compression spring is compressed. After the upper mold and the lower mold are separated after the product is formed, the elastic tension of the compression spring causes the flat plate to move upward to eject the product, thereby realizing the automatic operation capability of the ejection structure when the mold is opened, facilitating the ejection and removal of the product and increasing the practicality of the mold.

[0015] The utility model has a conical groove, and a push head fixedly connected to the push rod is arranged inside the conical groove. The push head is in an inverted cone shape, so that the push head can increase the contact area with the product, and then when the product is ejected, the force-bearing area of ​​the product can be increased, the product can be prevented from being deformed, and the practicality is increased.

[0016] The utility model provides a frame 1 and a frame 2, wherein the frame 1 is fixedly connected to the upper mold, and the frame 2 is connected to the enclosure, so that the ejection structure will not be activated at the moment when the lower mold is separated from the upper mold. When the upper mold moves up a certain distance and then continues to move up, it will drive the enclosure to move up, release the downward pressure of the enclosure on the column, and enable the ejection structure to be activated to eject the product. That is, after the upper mold moves up a certain distance, the product will be ejected under the automatic activation of the ejection structure, which is conducive to the ejection and removal of the product and increases practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of an ejection structure of a mold of the utility model;

[0018] Figure 2 It is a cross-sectional view of the lower mold, upper mold and enclosure of the utility model;

[0019] Figure 3 It is an enlarged schematic diagram of the A part of the utility model;

[0020] Figure 4 It is an enlarged schematic diagram of the B portion of the utility model.

[0021] In the figure: 1. bottom plate; 2. lower mold; 201. bottom cavity; 202. column hole; 203. rod hole; 204. conical groove; 3. enclosure; 4. top plate; 5. side plate; 6. sealing plate; 7. compression spring; 8. flat plate; 9. column; 10. push rod; 11. rubber block; 12. molding cavity; 13. upper mold; 14. box one; 15. box two; 16. pouring hole; 17. push head; 18. guide sleeve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4The utility model provides an embodiment: a mold ejection structure, comprising a bottom plate 1, a lower mold 2 is fixedly installed above the bottom plate 1, side plates 5 are symmetrically fixedly installed on both sides of the lower mold 2, an upper mold 13 is arranged above the lower mold 2, and a surrounding plate 3 is arranged above the lower mold 2 along the outer side of the upper mold 13, a bottom cavity 201 is arranged inside the lower mold 2, a flat plate 8 is arranged inside the bottom cavity 201, a compression spring 7 is fixedly installed below the flat plate 8, column holes 202 are symmetrically arranged on both sides above the bottom cavity 201 in the lower mold 2, and the column holes 202 are connected to the bottom cavity 201, a rod hole 203 is arranged inside the lower mold 2 along the top of the bottom cavity 201, and two rod holes 203 are arranged, columns 9 are symmetrically fixedly installed on both sides above the flat plate 8, and the upper ends of the columns 9 extend into the interior of the column holes 202, a push rod 10 is fixedly installed above the flat plate 8, and two push rods 10 are arranged, and the upper ends of the two push rods 10 extend into the corresponding rod holes 203 respectively.

[0024] During use, when the lower mold 2 and the upper mold 13 are closed for casting and molding of the product, the enclosure 3 will press down the column, so that the column 9 will retract into the lower mold 2, driving the flat plate 8 to move downward, and the compression spring 7 will be compressed. After the upper mold 13 and the lower mold 2 are separated after the product molding is completed, the elastic tension of the compression spring 7 will cause the flat plate 8 to drive the push rod 10 to move upward to eject the product, thereby realizing the ability of the ejection structure to operate automatically when the mold is opened, which is beneficial to the ejection and removal of the product and increases the practicality of the mold.

[0025] Furthermore, a conical groove 204 is provided inside the lower mold 2 along the top of the rod hole 203, and the conical groove 204 is connected to the rod hole 203. A push head 17 is provided inside the conical groove 204, and the push head 17 is welded to the push rod 10. The push head 17 is an inverted cone, so that the contact area between the push head 17 and the product can be increased, thereby increasing the force area of ​​the product when the product is ejected, preventing the product from being deformed.

[0026] Furthermore, a rubber block 11 is fixedly installed in the middle above the flat plate 8, which can prevent the flat plate 8 from colliding with the lower mold 2 when it moves upward due to the elastic force of the compression spring 7, thereby increasing practicality.

[0027] Furthermore, a sealing plate 6 is provided below the bottom cavity 201 , and the sealing plate 6 is fixedly connected to the lower mold 2 by screws. The sealing plate 6 is in contact with the compression spring 7 and can support the compression spring 7 .

[0028] Furthermore, a guide sleeve 18 is provided inside the column hole 202 along the outer side of the column 9, and the guide sleeve 18 is fixedly connected to the lower mold 2. The provision of the guide sleeve 18 increases the linearity and stability of the lifting and lowering movement of the column 9.

[0029] Furthermore, the lower mold 2 and the upper mold 13 are closed to form a molding cavity 12. A pouring hole 16 is provided inside the upper mold 13 along the top of the molding cavity 12, and the pouring hole 16 is connected to the molding cavity 12, so as to facilitate pouring the molten material of the product into the molding cavity 12. A top plate 4 is fixedly installed above the upper mold 13, so as to facilitate connection and installation with an external driving device, and to facilitate the lifting and moving of the upper mold 13.

[0030] Furthermore, an annular groove is provided above the outer side of the upper mold 13, and a square frame 14 is provided inside the annular groove along the outer side of the upper mold 13, and the square frame 14 is fixedly connected to the upper mold 13, and a square frame 2 15 is provided below the square frame 14, and the square frame 2 15 is fixedly connected to the enclosure 3. After the product is cooled and formed in the molding cavity 12, the upper mold 13 is driven to move upward. When the upper mold 13 moves up a certain distance and then continues to move upward, it will push the square frame 2 to drive the enclosure 3 to move upward, release the downward pressure of the enclosure 3 on the column 9, so that the ejection structure can be started to eject the product, thereby increasing practicality.

[0031] Working principle: When in use, the upper mold 13 and the lower mold 2 are driven to close, and the enclosure 3 presses down the column 9, so that the column 9 retracts into the lower mold 2, driving the flat plate 8 to move downward, and the compression spring 7 is compressed, and then the molten material is poured into the molding cavity 12 through the pouring hole 16. After the product in the molding cavity 12 is cooled and formed, the upper mold 13 is driven to move upward. When the upper mold 13 moves up a certain distance and then continues to move upward, it will push the frame 2 to drive the enclosure 3 to move upward, and release the downward pressure of the enclosure 3 on the column 9. At this time, through the elastic tension of the compression spring 7, the flat plate 8 drives the push rod 10 to move upward to eject the product, so that the ejection structure can be started to eject the product.

[0032] 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.

Claims

1. A mold ejection structure, comprising a bottom plate (1), characterized in that: A lower die (2) is fixedly mounted above the bottom plate (1), side plates (5) are symmetrically fixedly mounted on both sides of the lower die (2), an upper die (13) is arranged above the lower die (2), a surrounding plate (3) is arranged above the lower die (2) along the outer side of the upper die (13), a bottom cavity (201) is arranged inside the lower die (2), a flat plate (8) is arranged inside the bottom cavity (201), a compression spring (7) is fixedly mounted below the flat plate (8), and side plates (5) are symmetrically arranged inside the lower die (2) along both sides above the bottom cavity (201). A column hole (202) is provided, and the column hole (202) is connected to the bottom cavity (201); a rod hole (203) is provided inside the lower mold (2) along the top of the bottom cavity (201), and there are two rod holes (203); columns (9) are symmetrically fixedly installed on both sides above the plate (8), and the upper ends of the columns (9) extend into the column hole (202); a push rod (10) is fixedly installed above the plate (8), and there are two push rods (10), and the upper ends of the two push rods (10) extend into the corresponding rod holes (203) respectively.

2. The ejection structure of a mold according to claim 1, characterized in that: A conical groove (204) is provided inside the lower mold (2) along the top of the rod hole (203), and the conical groove (204) is connected to the rod hole (203). A push head (17) is provided inside the conical groove (204), and the push head (17) is welded to the push rod (10), and the push head (17) is in an inverted cone shape.

3. The ejection structure of a mold according to claim 1, characterized in that: A rubber block (11) is fixedly mounted in the middle above the flat plate (8).

4. The ejection structure of a mold according to claim 1, characterized in that: A sealing plate (6) is provided below the bottom cavity (201), and the sealing plate (6) is fixedly connected to the lower mould (2) via screws.

5. The ejection structure of a mold according to claim 1, characterized in that: A guide sleeve (18) is arranged inside the column hole (202) along the outer side of the column (9), and the guide sleeve (18) is fixedly connected to the lower mold (2).

6. The ejection structure of a mold according to claim 1, characterized in that: The lower mold (2) and the upper mold (13) are closed to form a molding cavity (12); a pouring hole (16) is provided inside the upper mold (13) along the top of the molding cavity (12); the pouring hole (16) is connected to the molding cavity (12); and a top plate (4) is fixedly installed above the upper mold (13).

7. The ejection structure of a mold according to claim 1, characterized in that: An annular groove is arranged above the outer side of the upper mold (13); a square frame 1 (14) is arranged inside the annular groove along the outer side of the upper mold (13); the square frame 1 (14) is fixedly connected to the upper mold (13); a square frame 2 (15) is arranged below the square frame 1 (14); and the square frame 2 (15) is fixedly connected to the enclosure (3).

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