An inner core-pulling mechanism of an injection mold

Abstract

The utility model discloses an inner core-pulling mechanism of injection mold, including the mould, is seted up mould groove on the mould, and its characterized in that: a plurality of moving grooves are seted up on the mould, a plurality of moving grooves are equidistant array distribution, and a plurality of knock column are all provided in moving groove, and knock column one end is flush with one side of mould groove, and knock column one side is fixedly connected with the spring, and the spring other end is fixedly connected with the moving block, and the moving block one end is fixedly connected with the top rod, and top rod one end is aligned with knock column center point, the side of mould is connected with the mounting plate, and the movable cavity is seted up on the mounting plate. The utility model discloses an inner core-pulling mechanism of injection mold, and the problem that the cooperation between the mould core and the plastic is too tight and the mould core cannot be smoothly pulled out from the plastic workpiece is solved, thereby improving production efficiency, reducing mould damage, and improving the quality of production workpieces.

Description

Technical Field

[0001] This utility model relates to the field of core pulling in injection molds, and in particular to an internal core pulling mechanism for injection molds. Background Technology

[0002] Injection molds are tools used in the injection molding process, primarily for manufacturing various plastic parts. Plastic is heated to a molten state and injected into the mold cavity using an injection molding machine. After cooling, it forms the desired shape, and then a core-pulling device is used to remove the plastic part from the mold.

[0003] The core-pulling structure used in existing injection molds suffers from a problem during core pulling: as the molten plastic cools and solidifies, shrinkage occurs, especially in complex areas of the mold. This can cause the core to become too tight against the plastic workpiece, leading to the core being sucked in or stuck to it, making it impossible to pull the core out smoothly. Utility Model Content

[0004] The main purpose of this utility model is to provide an internal core-pulling mechanism for injection molds, which can effectively solve the technical problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An internal core-pulling mechanism for an injection mold includes a mold, a mold groove, and a plurality of movable grooves. These movable grooves are arranged in an equally spaced array. Each of the movable grooves contains a striking post, one end of which is flush with one side of the mold groove. A spring is fixedly connected to one side of the striking post, and a movable block is fixedly connected to the other end of the spring. A push rod is fixedly connected to one end of the movable block, and one end of the push rod is aligned with the center point of the striking post. A mounting plate is snapped onto one side of the mold. A movable cavity is formed on the mounting plate, and a movable component is disposed within the movable cavity. The movable component is used to move the movable block into the movable groove.

[0007] As a further embodiment of this utility model, the movable component includes a movable plate disposed in the movable cavity, one side of the movable plate being fixedly connected to one end of several movable blocks, and a movable groove being provided on one side of the mounting plate, with one end of the movable plate passing through the movable groove.

[0008] As a further embodiment of this utility model, a mounting groove is provided on one side of the mounting plate, and a motor is snapped into the mounting groove.

[0009] As a further embodiment of this utility model, the output end of the motor is coaxially connected to a transmission shaft, and one end of the transmission shaft is fixedly connected to an extrusion plate.

[0010] As a further embodiment of this utility model, the extrusion plate is semi-circular in shape, and the extrusion plate is vertically aligned with the moving plate.

[0011] As a further embodiment of this utility model, a limiting block is fixedly connected to one side of the movable cavity, a limiting groove is formed on one side of the movable plate, and one end of the limiting block extends into the limiting groove.

[0012] As a further embodiment of this utility model, a protective shell is snapped onto one side of the mold, and the protective shell covers the outside of the motor.

[0013] The beneficial effects of this utility model are as follows:

[0014] The movable component drives the movable block inside the active cavity to slide into the movable groove. At the same time, the movable block, along with the push rod, applies a pushing force to the striking column, pushing one end of the striking column out of the movable groove. Then, the movable block, in conjunction with the spring, pulls the striking column back into the movable groove. This causes the striking column to continuously strike the workpiece in the mold groove, making the workpiece vibrate continuously. Through vibration, the contact point between the mold core and the workpiece changes continuously, and the friction decreases accordingly, thereby effectively reducing the adhesion force and separating the mold core from the workpiece. This solves the problem of the mold core being too tightly fitted to the plastic, making it impossible for the mold core to be smoothly extracted from the plastic workpiece, thus improving production efficiency, reducing mold damage, and improving the quality of the produced workpiece.

[0015] By setting the extrusion plate into a semi-circle, the extrusion plate can intermittently extrude pressure on the moving plate, causing the moving plate to move intermittently, thereby causing the striking column to strike the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the internal core-pulling mechanism of an injection mold according to the present invention.

[0017] Figure 2 This is a rear view schematic diagram of the internal core-pulling mechanism of an injection mold according to the present invention.

[0018] Figure 3 This is a schematic diagram of the interior of the protective shell of the inner core-pulling mechanism of an injection mold according to the present invention.

[0019] Figure 4 This is a cross-sectional view of an internal core-pulling mechanism for an injection mold according to the present invention.

[0020] Figure 5 This utility model relates to an internal core-pulling mechanism for an injection mold. Figure 4 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Mold; 2. Mold groove; 3. Moving groove; 4. Striking post; 5. Spring; 6. Moving block; 7. Ejector rod; 8. Moving plate; 9. Mounting plate; 10. Movable cavity; 11. Movable groove; 12. Mounting groove; 13. Motor; 14. Drive shaft; 15. Extrusion plate; 16. Limiting groove; 17. Limiting block; 18. Protective shell. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-5 As shown, an internal core-pulling mechanism for an injection mold includes a mold 1, a mold groove 2, and a plurality of movable grooves 3. The movable grooves 3 are arranged in an array at equal intervals. Each movable groove 3 is provided with a striking post 4. One end of the striking post 4 is flush with one side of the mold groove 2. A spring 5 is fixedly connected to one side of the striking post 4. A movable block 6 is fixedly connected to the other end of the spring 5. A push rod 7 is fixedly connected to one end of the movable block 6. One end of the push rod 7 is aligned with the center point of the striking post 4.

[0024] In this embodiment, a mounting plate 9 is snapped onto one side of the mold 1. A movable cavity 10 is provided on the mounting plate 9. A moving component is provided in the movable cavity 10. The moving component is used to drive the moving block 6 to move into the moving groove 3.

[0025] To facilitate the detachment of the workpiece adhering to the mold core, the moving component first drives the moving block 6 in the movable cavity 10 to slide into the moving groove 3. At the same time, the moving block 6, along with the push rod 7, applies a pushing force to the striking post 4, pushing one end of the striking post 4 out of the moving groove 3. Then, the moving block 6, in conjunction with the spring 5, pulls the striking post 4 back into the moving groove 3. This causes the striking post 4 to continuously strike the workpiece in the mold groove 2, causing the workpiece to vibrate continuously. Through vibration, the contact point between the mold core and the workpiece changes continuously, and the friction decreases accordingly, thereby effectively reducing the adhesion force and separating the mold core from the workpiece. This solves the problem of the mold core being too tightly fitted to the plastic, preventing the mold core from being smoothly extracted from the plastic workpiece, thus improving production efficiency, reducing mold damage, and improving the quality of the produced workpieces.

[0026] In this embodiment, the moving component includes a moving plate 8 disposed in the movable cavity 10. One side of the moving plate 8 is fixedly connected to one end of several moving blocks 6. A movable groove 11 is provided on one side of the mounting plate 9, and one end of the moving plate 8 passes through the movable groove 11.

[0027] First, the movable plate 8 moves within the movable groove 11. Simultaneously, the movable plate 8 drives several movable blocks 6 to slide within the movable groove 3, which facilitates the movable blocks 6 to drive the top rod 7 to impact the striking column 4. This allows the striking column 4 to continuously strike the workpiece, making it convenient for workers to use.

[0028] A mounting slot 12 is provided on one side of the mounting plate 9. A motor 13 is engaged in the mounting slot 12. The output end of the motor 13 is coaxially connected to a drive shaft 14. One end of the drive shaft 14 is fixedly connected to a pressing plate 15. The motor 13 and the mounting plate 9 are connected together through the mounting slot 12. The motor 13 drives the drive shaft 14 to rotate, and the drive shaft 14 drives the pressing plate 15 to rotate synchronously. The pressing plate 15 can lift the moving plate 8 and move the moving plate 8 inside the movable slot 11, which greatly reduces the workload of the staff, makes it easier for the staff to operate the equipment, and improves the convenience of equipment operation.

[0029] The extrusion plate 15 is semi-circular in shape and is perpendicularly aligned with the moving plate 8. By setting it to be semi-circular, the extrusion plate 15 can intermittently extrude the moving plate 8, causing the moving plate 8 to move intermittently, thereby causing the striking column 4 to strike the workpiece.

[0030] In this embodiment, a protective shell 18 is snapped onto one side of the mold 1. The protective shell 18 covers the outside of the motor 13. By covering the outside of the component with the protective shell 18, the motor 13 and the component are protected, avoiding damage to the equipment components and improving the service life of the equipment.

[0031] In this embodiment, a limiting block 17 is fixedly connected to one side of the movable cavity 10, and a limiting groove 16 is opened on one side of the movable plate 8. One end of the limiting block 17 extends into the limiting groove 16.

[0032] By using the limiting groove 16 and the limiting block 17, one end of the moving plate 8 is restricted to prevent displacement when the moving plate 8 moves, thereby ensuring the stability of the equipment during use.

[0033] It should be noted that this utility model is an internal core-pulling mechanism for injection molds. In use, the motor 13 first drives the transmission shaft 14 to rotate, and the transmission shaft 14 synchronously drives the extrusion plate 15 to rotate. The extrusion plate 15 can lift the moving plate 8, and the moving block 6 in the movable cavity 10 slides into the moving groove 3. At the same time, the moving block 6, along with the push rod 7, applies a pushing force to the striking column 4, pushing one end of the striking column 4 out of the moving groove 3. Then, the moving block 6, in conjunction with the spring 5, pulls the striking column 4 back into the moving groove 3. In this way, the striking column 4 continuously strikes the workpiece in the mold groove 2, causing the workpiece to vibrate continuously. Through vibration, the contact point between the mold core and the workpiece changes continuously, and the friction is reduced accordingly, thereby effectively reducing the adhesion force and separating the mold core from the workpiece.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An internal core-pulling mechanism for an injection mold, comprising a mold (1), wherein the mold (1) has a mold groove (2), characterized in that: The mold (1) is provided with a plurality of movable slots (3), which are arranged in an array at equal intervals. Each of the movable slots (3) is provided with a striking column (4). One end of the striking column (4) is flush with one side of the mold slot (2). A spring (5) is fixedly connected to one side of the striking column (4). A movable block (6) is fixedly connected to the other end of the spring (5). A push rod (7) is fixedly connected to one end of the movable block (6). One end of the push rod (7) is aligned with the center point of the striking column (4). The mold (1) is attached to a mounting plate (9) on one side. The mounting plate (9) has a movable cavity (10) and a moving component is provided in the movable cavity (10). The moving component is used to drive the moving block (6) to move into the moving groove (3).

2. An internal core-drawing mechanism of an injection mold according to claim 1, characterized in that: The movable component includes a movable plate (8) disposed in the movable cavity (10). One side of the movable plate (8) is fixedly connected to one end of a plurality of movable blocks (6). A movable groove (11) is provided on one side of the mounting plate (9). One end of the movable plate (8) passes through the movable groove (11).

3. An internal core-drawing mechanism of an injection mold according to claim 1, characterized in that: The mounting plate (9) has a mounting groove (12) on one side, and a motor (13) is engaged in the mounting groove (12).

4. The internal core-pulling mechanism of an injection mold according to claim 3, characterized in that: The output end of the motor (13) is coaxially connected to a transmission shaft (14), and one end of the transmission shaft (14) is fixedly connected to an extrusion plate (15).

5. The internal core-pulling mechanism of an injection mold according to claim 4, characterized in that: The extrusion plate (15) is semi-circular in shape and is vertically aligned with the moving plate (8).

6. The internal core-pulling mechanism of an injection mold according to claim 2, characterized in that: A limiting block (17) is fixedly connected to one side of the movable cavity (10), and a limiting groove (16) is opened on one side of the movable plate (8). One end of the limiting block (17) extends into the limiting groove (16).

7. The internal core-pulling mechanism of an injection mold according to claim 1, characterized in that: A protective shell (18) is snapped onto one side of the mold (1), and the protective shell (18) covers the outside of the motor (13).

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