Rapid ejection mechanism of injection molding mold

Abstract

The utility model discloses a quick ejection mechanism of an injection molding mold, which comprises a movable mold and a fixed mold, a bottom plate is arranged at one end of the fixed mold back to the movable mold, a side wall is connected between the bottom plate and the fixed mold, a plurality of molding cavities which are arranged in an annular array around an axis are arranged between the movable mold and the fixed mold, and ejector pin rods which are matched with the molding cavities one by one are connected onto the fixed mold in a sliding manner. One end of the ejector pin rod can extend into the forming cavity, the other end of the ejector pin rod is provided with an ejector pin plate, the ejector pin rod is sleeved with an elastic piece, one end of the elastic piece abuts against the fixed mold, the other end of the elastic piece abuts against the ejector pin plate, the end, not connected with the ejector pin rod, of one ejector pin plate is provided with a pushing ball head, and the pushing ball head abuts against the ejector pin plate; a power assembly for controlling the turntable to rotate is arranged on the turntable; and the pushing ball head is arranged on the turntable and moves along with the turntable. The quick ejection mechanism has the characteristics of low input power, small size and convenience in storage, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, and more specifically, it relates to a rapid ejection mechanism for an injection molding mold. Background Art

[0002] After the products on an injection mold with multiple molding cavities are injection molded, if the products need to be ejected simultaneously to achieve demolding, a high additional thrust is required for the ejector pin mechanism. The traditional power source for the ejector pin mechanism is a push rod cylinder or a hydraulic cylinder. Due to the high thrust requirement, the added cylinder body has a large volume and a large overall height, resulting in great difficulty in storing the mold later and poor overall effect. Accordingly, the utility model provides a rapid ejection mechanism for an injection molding mold. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a rapid ejection mechanism for an injection molding mold, which has the characteristics of low input power, small volume and convenient storage.

[0004] To solve the above technical problems, the purpose of the utility model is realized as follows: A rapid ejection mechanism for an injection molding mold according to the utility model includes a moving mold and a fixed mold. One end of the fixed mold facing away from the moving mold is provided with a bottom plate, and a side enclosure is connected between the bottom plate and the fixed mold. A plurality of molding cavities are arranged in a circular array around an axis between the moving mold and the fixed mold. A ejector pin rod slidably connected to the fixed mold and matching with each molding cavity is provided. One end of the ejector pin rod can extend into the molding cavity, and the other end is provided with an ejector pin plate. An elastic member with one end abutting against the fixed mold and the other end abutting against the ejector pin plate is sleeved on the ejector pin rod. One end of one of the ejector pin plates not connected to the ejector pin rod is provided with a push ball head, and the push ball head abuts against the ejector pin plate. A turntable collinear with the distribution axis of the molding cavity is rotatably connected to the side enclosure. A power assembly for controlling rotation is provided on the turntable, and the push ball head is arranged on the turntable and follows the movement.

[0005] The utility model is further arranged as follows: The power assembly includes a driven gear coaxially arranged with the turntable. A driving gear is meshed with the driven gear, and a motor for controlling rotation is drivingly connected to the driving gear. The motor is arranged on the bottom plate.

[0006] The utility model is further arranged as follows: An annular guide rail is provided on the inner side surface of the side enclosure, and an annular guide groove is provided on the outer side surface of the turntable. The annular guide rail is slidably connected in the sliding guide groove.

[0007] The utility model is further arranged as follows: One end of the ejector pin plate not connected to the ejector pin rod has a cutting chamfer.

[0008] The utility model is further arranged as follows: The elastic member is a compression spring.

[0009] In summary, the utility model has the following beneficial effects: The rapid ejection mechanism of the injection molding die involved in the utility model first distributes around the molding cavity, and then uses the push ball heads that rotate and displace to drive the ejector pin mechanism one by one until the products are demolded one by one. It has low requirements for the initial thrust, the products are demolded smoothly and quickly, the overall function is perfect, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the preferred implementation solutions of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0012] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0013] Embodiment 1

[0014] Refer to Figure 1 As shown, a rapid ejection mechanism of an injection molding die involved in this embodiment includes a moving die 1 and a fixed die 2. One end of the fixed die 2 facing away from the moving die is provided with a bottom plate 3. A side enclosure 4 is connected between the bottom plate 3 and the fixed die 2. There are several molding cavities (not shown) arranged in a circular array around the axis between the moving die 1 and the fixed die 2. A ejector pin rod 5 that is slidably connected to the fixed die 2 and matches the molding cavity one by one is provided on the fixed die 2. One end of the ejector pin rod 5 can extend into the molding cavity, and the other end is provided with an ejector pin plate 6. An elastic member 7 with one end abutting against the fixed die and the other end abutting against the ejector pin plate is sleeved on the ejector pin rod 5. The elastic member 7 is a compression spring. One end of one of the ejector pin plates 6 that is not connected to the ejector pin rod is provided with a push ball head 8. The push ball head 8 abuts against the ejector pin plate 6. A turntable 9 that is collinear with the distribution axis of the molding cavity is rotatably connected to the side enclosure 4. A power assembly for controlling rotation is provided on the turntable 9. The push ball head 8 is arranged on the turntable 9 and follows the movement.

[0015] Furthermore, the power assembly includes a driven gear 10 arranged coaxially with the turntable 9. A driving gear 11 is engaged with the driven gear 10. A motor 12 for controlling rotation is drivably connected to the driving gear 11. The motor 12 is arranged on the bottom plate 3.

[0016] Further, an annular guide rail 13 is provided on the inner side surface of the side wall 4, and an annular guide groove (not marked) is provided on the outer side surface of the turntable 9, and the annular guide rail 13 is slidably connected in the sliding guide groove.

[0017] In this embodiment, after the product is injection molded, the moving mold 1 is opened relative to the fixed mold 2, and the turntable 9 rotates under the drive of the motor and the gear set until the push ball head 8 pushes the ejector pin plate 6 one by one. The ejector pin plate 6 drives the ejector pin rod 5 to extend into the corresponding molding cavity and eject the product in the molding cavity, realizing the function of rapid demolding. The push ball head 8 at the initial position is located between the two ejector pin plates 6.

[0018] Among them, through the arrangement of the elastic member 7, it is used for the reset of the ejector pin rod 5 and the ejector pin plate 6.

[0019] Among them, through the arrangement of the annular guide rail 13 cooperating with the annular guide groove, it plays a sliding guiding role when the turntable 9 rotates relative to the side wall 4.

[0020] Embodiment 2

[0021] See Figure 1 As shown, a rapid ejection mechanism for an injection molding die involved in this embodiment is further provided on the basis of Embodiment 1. One end of the ejector pin plate 6 not connected to the ejector pin rod 5 has a cutting chamfer 14.

[0022] In this embodiment, through the arrangement of the cutting chamfer 14, it is convenient for the push ball head 8 to move from the bottom of one ejector pin plate 6 to the bottom of the other ejector pin plate 6.

[0023] The rapid ejection mechanism for an injection molding die involved in the present invention first distributes the molding cavity, and then uses the push ball heads that are rotated and displaced to drive the ejector pin mechanism one by one until the products are demolded one by one. It has low requirements for the initial thrust, the product demolding is smooth and fast, the overall function is perfect, and the practicability is strong.

[0024] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the actual orientation or positional relationship shown. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.

[0025] Unless otherwise clearly defined and limited, in this utility model, if there are terms such as "arranged", "connected" and "coupled", they shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0026] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present utility model without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in this technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. A rapid ejection mechanism for an injection molding mold, comprising a movable mold and a fixed mold, wherein a bottom plate is provided at one end of the fixed mold facing away from the movable mold, and a side enclosure is connected between the bottom plate and the fixed mold, characterized in that: A plurality of molding cavities arranged in a circular array around an axis are provided between the movable mold and the fixed mold, and an ejector rod matching the molding cavities one by one is slidably connected to the fixed mold, one end of the ejector rod can be inserted into the molding cavity, and the other end is provided with an ejector plate, and an elastic member with one end against the fixed mold and the other end against the ejector plate is sleeved on the ejector rod, and an ejector ball head is provided at one end of the ejector plate not connected to the ejector rod, and the ejector ball head is against the ejector plate, and a turntable which is colinear with the distribution axis of the molding cavity is rotatably connected to the side enclosure, and a power assembly for controlling the rotation is provided on the turntable, and the ejector ball head is arranged on the turntable and moves with it.

2. The rapid ejection mechanism for injection molding according to claim 1, characterized in that: The power assembly comprises a driven gear coaxially arranged with the rotating disk, the driven gear is meshed with a driving gear, the driving gear is transmission-connected with a motor for controlling the rotation, and the motor is arranged on the bottom plate.

3. The rapid ejection mechanism for injection molding according to claim 1 or 2, characterized in that: An annular guide rail is arranged on the inner side surface of the side enclosure, an annular guide groove is arranged on the outer side surface of the rotating disk, and the annular guide rail is slidably connected in the sliding guide groove.

4. The rapid ejection mechanism for injection molding according to claim 3, characterized in that: One end of the ejector plate not connected to the ejector rod has a cut-in chamfer.

5. The rapid ejection mechanism for injection molding mold according to claim 1, characterized in that: The elastic member is a compression spring.

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