CN217621994U

CN217621994U - Ejector plate resetting mechanism of injection mold

Info

Publication number: CN217621994U
Application number: CN202221041131.0U
Authority: CN
Inventors: 王金标; 张伟钱; 周锋
Original assignee: Zhejiag Taizhou Meiduo Mould Co ltd
Current assignee: Zhejiag Taizhou Meiduo Mould Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-10-21
Anticipated expiration: 2032-04-29

Abstract

The utility model relates to an injection mold's thimble board canceling release mechanical system, including movable mould and cover half, the movable mould includes the thimble board, the cover half includes the guide arm, the system has the confession in the thimble board the guide bar hole that the guide arm passed, it removes the chamber still to have the system in the thimble board, remove the chamber with through the slip hole intercommunication between the guide bar hole, it is equipped with mobilizable slider to remove the intracavity, the one end of slider with be connected with the spring between the lateral wall in removal chamber. Compared with the prior art, the utility model is provided with the guide rod on the fixed die, the movable slide block is arranged in the ejector plate, the guide rod and the slide block are contacted to drive the ejector plate to be reset forcibly when the die is closed, and the ejector plate is ensured to be reset in place; the slide block can move to prevent influencing the resetting of a subsequent fixed die; the structure is simple, the occupied space is small, the safety and the reliability are realized, the condition of die collision during die assembly is avoided, and the application range is wide.

Description

Ejector plate resetting mechanism of injection mold

Technical Field

The utility model relates to an injection mold's thimble board canceling release mechanical system belongs to injection mold technical field.

Background

The injection mold comprises a movable mold and a fixed mold, an ejector plate and ejector pins are usually designed in the movable mold, and the ejector plate drives the ejector pins to move upwards to eject a product after the mold is opened, so that smooth demolding of the product is guaranteed. However, when the mold is closed, the ejector plate may not be reset in place, so that the mechanism on the fixed mold has a risk of colliding with the ejector. The collision mold easily causes damage to the injection mold, and the production efficiency is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection mold's that guarantees that the thimble board resets and targets in place thimble board canceling release mechanical system to prior art's shortcoming.

For realizing the purpose the utility model adopts the technical proposal that:

injection mold's thimble board canceling release mechanical system, including movable mould and cover half, the movable mould includes the thimble board, the cover half includes the guide arm, the system has the confession in the thimble board the guide rod hole that the guide arm passed, it removes the chamber still to have the system in the thimble board, remove the chamber with through the slip hole intercommunication between the guide rod hole, it is equipped with mobilizable slider to remove the intracavity, the one end of slider with be connected with the spring between the lateral wall in removal chamber.

As a further optimization of the above technical solution: in the die assembly process of the die, the end part of the sliding block penetrates through the sliding hole and is positioned in the guide rod hole, the guide rod is in contact with the sliding block, and the guide rod drives the sliding block and the ejector plate to move downwards.

As a further optimization of the above technical solution: the movable mould still including being located ejector plate below movable mould bedplate, be equipped with the guide block on the movable mould bedplate, the system has first direction inclined plane on the guide block, the system has the through-hole in the slider, the pore wall system of through-hole have with the second direction inclined plane that first direction inclined plane inclination is the same, the top of guide block passes the through-hole, first direction inclined plane and second direction inclined plane contact.

As a further optimization of the above technical solution: the end part of the guide rod is provided with a first notch, one side wall of the first notch is provided with a reset step, and the reset step is contacted with the sliding block in the die assembly process of the die.

As a further optimization of the above technical solution: and the ejector plate is also provided with a sliding block stop dog, and two ends of the spring are respectively contacted with the sliding block stop dog and the sliding block.

As a further optimization of the above technical solution: the guide block is provided with a convex block, the first guide inclined plane is positioned at the top of the convex block, a positioning step is formed between the convex block and the guide block, a limiting hole is further arranged between the moving cavity and the guide rod hole, and the positioning step moves in the limiting hole.

As a further optimization of the above technical solution: the thimble board includes last thimble board and lower thimble board, the bottom surface of slider with the top surface of thimble board contacts down.

Compared with the prior art, the utility model is provided with the guide rod on the fixed die, the movable slide block is arranged in the ejector plate, the guide rod and the slide block are contacted to drive the ejector plate to be reset forcibly when the die is closed, and the ejector plate is ensured to be reset in place; the slide block can move to prevent influencing the resetting of a subsequent fixed die; the structure is simple, the occupied space is small, the safety and the reliability are realized, the condition of die collision during die assembly is avoided, and the application range is wide.

Drawings

Fig. 1 is a schematic view of the cross-sectional structure of the mold of the present invention after closing the mold.

Fig. 2 is a schematic sectional structure diagram in the mold closing process of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description. As shown in fig. 1-2, fig. 2 is a schematic view showing the structure of each component, with hatching removed, and the ejector plate return mechanism of the injection mold comprises a movable mold 8 and a fixed mold 9. The fixed die 9 comprises a guide rod 3, a first notch 31 is formed at the end part of the guide rod 3, and a reset step 32 is arranged on one side wall of the first notch 31. The movable mold 8 comprises a movable mold base plate 1 and an ejector plate 2 positioned above the movable mold base plate 1. The ejector plate 2 has a guide hole 21 formed therein through which the guide bar 3 passes. The ejector plate 2 is also provided with a moving cavity 22 therein, and the moving cavity 22 is communicated with the guide rod hole 21 through a sliding hole. A movable slide block 5 is arranged in the movable cavity 22, a through hole is formed in the slide block 5, and a second guide inclined surface 51 is formed on the wall of the through hole. The movable mold base plate 1 is provided with a guide block 4, and the guide block 4 is provided with a first guide inclined surface 41 with the same inclination degree as the second guide inclined surface 51. A portion of the guide block 4 is located in the moving chamber 22, the top of the guide block 4 passes through the through hole, and the first guide slope 41 and the second guide slope 51 are in contact. The ejector plate 2 is also provided with a slide block stop 6, the slide block stop 6 is a side wall of the movable cavity 22, and a spring 7 is connected between the slide block stop 6 and the slide block 5. The slider stop 6 that can dismantle is set up, makes things convenient for the installation and the change of spring 7 and slider stop 6.

In the above technical scheme: the guide block 4 is formed with a projection 42, and the first guide slope 41 is located on the top of the projection 42. A positioning step 43 is formed between the projection 42 and the guide block 4. A limiting hole is further arranged between the moving cavity 22 and the guide rod hole 21, the positioning step 43 moves in the limiting hole, and the hole wall of the limiting hole has a limiting effect on the movement of the positioning step 43, namely, the movement of the guide block 4 is limited.

In the above technical scheme: the ejector plate 2 comprises an upper ejector plate and a lower ejector plate, and the bottom surface of the slide block 5 is contacted with the top surface of the lower ejector plate.

The utility model discloses a working process as follows, the state that the mould compound die finishes is: the bottom of the guide bar 3 passes through the guide bar hole 21, the end of the slider 5 contacts the guide bar 3, and the spring 7 is compressed.

After the mold is opened, the fixed mold 9 drives the guide rod 3 to move upwards, the guide rod 3 gradually separates from the guide rod hole 21, the ejector plate 2 moves upwards to perform ejection motion, the guide block 4 moves downwards relative to the slide block 5, the elastic force of the spring 7 is released, the elastic force drives the slide block 5 to move right, at the moment, the end part of the slide block 5 penetrates through the slide hole and is positioned in the guide rod hole 21, and the spring 7 is in an extension state. The contact of the first guide slope 41 and the second guide slope 51 guides the movement of the slider 5.

The mould is closed, all the components in the movable mould 8 are reset, and at the moment, the ejector plate 2 is not reset in place possibly and needs to be reset continuously. The fixed die 9 drives the guide rod 3 to move downwards, the end part of the guide rod 3 enters the guide rod hole 21, and the reset step 32 is in contact with the sliding block 5 positioned in the guide rod hole 21. The fixed die 9 continues to drive the guide rod 3 to move downwards, and the sliding block 5 and the ejector plate 2 are driven to synchronously move downwards; in the above process, the first guide slope 41 and the second guide slope 51 are in contact, so that the slider 5 moves downward and moves away from the guide rod hole 21. When the ejector plate 2 is reset to the right position, the slide block 5 is completely separated from the guide rod hole 21, and the reset step 32 is separated from the slide block 5. The fixed die 9 continues to drive the guide rod 3 to move downwards until the fixed die 9 is reset in place.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, all technical personnel in this technical field rely on the utility model discloses a conceive technical scheme that can obtain through logic analysis, reasoning or limited experiment on prior art's basis, all should fall into the utility model discloses a within the scope of protection.

Claims

1. An ejector plate resetting mechanism of an injection mold comprises a movable mold (8) and a fixed mold (9), wherein the movable mold (8) comprises an ejector plate (2), and the ejector plate resetting mechanism is characterized in that the fixed mold (9) comprises a guide rod (3), a guide rod hole (21) for the guide rod (3) to pass through is formed in the ejector plate (2), a movable cavity (22) is further formed in the ejector plate (2), the movable cavity (22) is communicated with the guide rod hole (21) through a sliding hole, a movable sliding block (5) is arranged in the movable cavity (22), and a spring (7) is connected between one end of the sliding block (5) and the side wall of the movable cavity (22);

in the die assembly process of the die, the end part of the sliding block (5) penetrates through the sliding hole and is positioned in the guide rod hole (21), the guide rod (3) is in contact with the sliding block (5), and the guide rod (3) drives the sliding block (5) and the ejector plate (2) to move downwards.

2. The ejector plate resetting mechanism of an injection mold according to claim 1, wherein the movable mold (8) further comprises a movable mold base plate (1) located below the ejector plate (2), a guide block (4) is arranged on the movable mold base plate (1), a first guide inclined surface (41) is formed on the guide block (4), a through hole is formed in the slide block (5), a second guide inclined surface (51) having the same inclination degree as the first guide inclined surface (41) is formed on a hole wall of the through hole, the top of the guide block (4) passes through the through hole, and the first guide inclined surface (41) is in contact with the second guide inclined surface (51).

3. The ejector plate resetting mechanism of an injection mold according to claim 1 or 2, characterized in that the end of the guide rod (3) is provided with a first notch (31), a side wall of the first notch (31) is provided with a resetting step (32), and the resetting step (32) is contacted with the slide block (5) in the mold closing process.

4. The ejector plate returning mechanism of an injection mold according to claim 1 or 2, characterized in that the ejector plate (2) is further provided with a slider stop (6), and both ends of the spring (7) are respectively in contact with the slider stop (6) and the slider (5).

5. The ejector plate returning mechanism of an injection mold according to claim 2, characterized in that the guide block (4) is formed with a protrusion (42), the first guide slope (41) is located at the top of the protrusion (42), a positioning step (43) is formed between the protrusion (42) and the guide block (4), a limiting hole is further provided between the moving cavity (22) and the guide rod hole (21), and the positioning step (43) moves in the limiting hole.