Injection mold with secondary ejection structure

Abstract

The utility model discloses a kind of injection mould with secondary ejection structure, it is related to injection mould technical field, and the utility model includes bottom plate, the upper side of bottom plate is equipped with injection upper die, the upper surface of bottom plate is fixed with lower mould, the below of bottom plate is equipped with support plate, the downside of support plate is equipped with electric push rod, and the output end of electric push rod is fixedly connected with support plate, the upper surface of support plate is fixed with vertical rod symmetrically, and the upper end of vertical rod is fixed with top plate, the upper surface of top plate is embedded with push plate, a kind of injection mould with secondary ejection structure provided by the utility model, by the two sets of different driving mechanisms of electric push rod and motor, threaded tube and stud etc. combination, the step operation of primary ejection and secondary ejection is realized, and this design can accurately and efficiently complete complex secondary ejection action, improve the success rate of stripping.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with a secondary ejection structure. Background Technology

[0002] Injection molds are tools for processing plastic products. They are carefully designed and manufactured from multiple parts for precise molding. Their working principle is to inject molten plastic granules into the mold cavity under high pressure, hold the pressure and cool them, and then demold them by the ejection mechanism. There are various types of molds, including single-cavity, multi-cavity, and hot runner molds, to meet different production needs. They are widely used in many industries such as electronics, automotive, medical, and packaging, and are the key to the production of plastic products.

[0003] However, existing technologies still have the following problems:

[0004] Most existing injection molds are not suitable for secondary ejection, while single ejection is sometimes insufficient to meet the demolding requirements of complex-shaped products. Some plastic products with undercuts, deep reinforcing ribs, or thin-walled structures may be deformed or damaged if ejected only once due to uneven force or excessive demolding resistance. Secondary ejection, by gradually ejecting the product from the mold in stages, ensures that the product is not damaged excessively during demolding, thus guaranteeing the quality and integrity of the product.

[0005] To address the aforementioned problems, the inventors proposed an injection mold with a secondary ejection structure to solve these issues. Utility Model Content

[0006] In order to solve the problem that injection molds are not convenient for secondary ejection, the purpose of this utility model is to provide an injection mold with a secondary ejection structure.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: an injection mold with a secondary ejection structure, including a base plate, an upper injection mold on the upper side of the base plate, a lower mold fixedly mounted on the upper surface of the base plate, a support plate below the base plate, an electric push rod on the lower side of the support plate, and the output end of the electric push rod fixedly connected to the support plate, vertical rods symmetrically fixedly mounted on the upper surface of the support plate, and a top plate fixedly mounted on the upper end of the vertical rods, and a push plate embedded in the upper surface of the top plate.

[0008] Preferably, a second bevel gear is rotatably provided on the upper surface of the support plate, a vertical plate is fixedly provided on the upper surface of the support plate, a motor is provided on one side of the vertical plate, and the output end of the motor passes through the vertical plate and is fixedly provided with a rotating shaft. A first bevel gear is fixedly provided on the inner end of the rotating shaft, and the first bevel gear is meshed with the second bevel gear. A threaded tube is fixedly provided on the upper surface of the second bevel gear, and a stud is threadedly connected to the threaded tube, and the upper end of the stud is fixedly connected to the push plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This utility model achieves the step-by-step operation of primary ejection and secondary ejection by combining two different drive mechanisms such as electric push rod and motor, threaded tube and stud. This design can accurately and efficiently complete the complex secondary ejection action and improve the success rate of demolding. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Fig. 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Fig. 2 This is an exploded view of the cross-section of the base plate and lower mold, as well as the related structure of the support plate of this utility model.

[0014] Fig. 3 This is an exploded view of the top plate and one of the sleeves of this utility model, as well as related structures.

[0015] In the diagram: 1. Base plate; 11. Support leg; 2. Upper injection mold; 3. Lower mold; 4. Support plate; 41. Electric push rod; 42. Vertical rod; 43. Top plate; 44. Plate groove; 5. Push plate; 51. Second bevel gear; 52. Vertical plate; 53. Motor; 54. Rotating shaft; 55. First bevel gear; 56. Threaded pipe; 57. Stud; 58. Protective plate; 59. Positioning pin; 510. Sleeve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figs. 1-3As shown, this utility model provides an injection mold with a secondary ejection structure, including a base plate 1, an upper injection mold 2 on the upper side of the base plate 1, a lower mold 3 fixedly mounted on the upper surface of the base plate 1, a support plate 4 below the base plate 1, an electric push rod 41 on the lower side of the support plate 4, and symmetrically fixed support legs 11 on the lower surface of the base plate 1, with the lower ends of the support legs 11 and the lower ends of the electric push rod 41 at the same height. The lower ends of the support legs 11 and the electric push rod 41 are simultaneously in contact with the ground, supporting the demolding structure and the injection equipment. The output end of the electric push rod 41 is fixedly connected to the support plate 4, and vertical rods are symmetrically fixedly mounted on the upper surface of the support plate 4. 42, and a top plate 43 is fixedly provided at the upper end of the vertical rod 42. The top plate 43 penetrates the bottom plate 1, and the outer surface size of the top plate 43 is the same as the inner wall size of the lower mold 3. A push plate 5 is embedded in the upper surface of the top plate 43. After injection molding is completed, the electric push rod 41 is started, and its output end pushes the support plate 4 to move upward. The support plate 4 drives the vertical rod 42 and the top plate 43 to rise together. Since the outer surface size of the top plate 43 is the same as the inner wall size of the lower mold 3, the top plate 43 will initially lift the plastic product from the lower mold 3 to achieve the initial ejection. This step is equivalent to initially loosening the product from the core, preparing for the subsequent secondary ejection.

[0018] A second bevel gear 51 is rotatably mounted on the upper surface of the support plate 4. A vertical plate 52 is fixedly mounted on the upper surface of the support plate 4. A motor 53 is mounted on one side of the vertical plate 52. A protective plate 58 is fixedly mounted on the outer side of the vertical plate 52 and is fixedly connected to the motor 53. The protective plate 58 provides protection and support for the motor 53. The output end of the motor 53 passes through the vertical plate 52 and is fixedly mounted on a rotating shaft 54. One end of the rotating shaft 54 ​​is rotatably connected to the vertical plate 52. A first bevel gear 55 is fixedly mounted on the inner end of the rotating shaft 54 ​​and meshes with the second bevel gear 51. A threaded tube 56 is fixedly mounted on the upper surface of the second bevel gear 51. A stud 57 is threadedly connected to the threaded tube 56, and the upper end of the stud 57 is fixedly connected to the push plate 5. Positioning pins 59 are symmetrically fixedly mounted on the upper surface of the support plate 4. Sleeves 510 are symmetrically fixedly mounted on the lower surface of the push plate 5 and are fitted onto the positioning pins 59. A mating push plate 5 is provided on the upper surface of the top plate 43. The plate groove 44 is used. Under normal conditions, the push plate 5 is located in the plate groove 44 and the upper surface of the push plate 5 and the top plate 43 are flush. After the initial ejection is completed, the motor 53 starts. The output end of the motor 53 drives the rotating shaft 54 ​​to rotate. The first bevel gear 55 at the end of the rotating shaft 54 ​​rotates accordingly. Since the first bevel gear 55 is meshed with the second bevel gear 51, the second bevel gear 51 will rotate under the drive of the first bevel gear 55. The threaded tube 56 fixed on the upper surface of the second bevel gear 51 will also rotate synchronously. The stud 57 connected to the threaded tube 56 will move upward under the rotation of the threaded tube 56. Since the upper end of the stud 57 is fixedly connected to the push plate 5, the push plate 5 will push the plastic product further out of the top plate 43 under the push of the stud 57, completing the secondary ejection action, so that the plastic product is completely separated from the mold. During the movement of the push plate 5, the sleeve 510 is sleeved on the positioning post 59 to play a guiding role and ensure that the push plate 5 rises smoothly.

[0019] Working principle: After injection molding is completed, the electric push rod 41 is started, and its output end pushes the support plate 4 to move upward. The support plate 4 drives the vertical rod 42 and the top plate 43 to rise together. Since the outer surface size of the top plate 43 is the same as the inner wall size of the lower mold 3, the top plate 43 will initially lift the plastic product from the lower mold 3 to achieve the initial ejection. This step is equivalent to initially loosening the product from the core, preparing for the subsequent secondary ejection.

[0020] After the initial ejection is completed, the motor 53 starts, and the output end of the motor 53 drives the rotating shaft 54 ​​to rotate. The first bevel gear 55 at the end of the rotating shaft 54 ​​rotates accordingly. Since the first bevel gear 55 is meshed with the second bevel gear 51, the second bevel gear 51 will rotate under the drive of the first bevel gear 55. The threaded tube 56 fixed on the upper surface of the second bevel gear 51 will also rotate synchronously. The stud 57 connected to the threaded tube 56 will move upward under the rotation of the threaded tube 56. Since the upper end of the stud 57 is fixedly connected to the push plate 5, the push plate 5 will push the plastic product further out of the top plate 43 under the push of the stud 57, completing the secondary ejection action, so that the plastic product is completely separated from the mold. During the movement of the push plate 5, the sleeve 510 is sleeved on the positioning post 59, which plays a guiding role and ensures that the push plate 5 rises smoothly.

[0021] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An injection mold with a secondary ejection structure, comprising a base plate (1), characterized in that: The upper side of the base plate (1) is provided with an injection upper mold (2), the upper surface of the base plate (1) is fixedly provided with a lower mold (3), the lower part of the base plate (1) is provided with a support plate (4), the lower side of the support plate (4) is provided with an electric push rod (41), and the output end of the electric push rod (41) is fixedly connected to the support plate (4). The upper surface of the support plate (4) is symmetrically provided with vertical rods (42), and the upper end of the vertical rods (42) is fixedly provided with a top plate (43). The upper surface of the top plate (43) is embedded with a push plate (5). The upper surface of the support plate (4) is rotatably provided with a second bevel gear (51), and the upper surface of the support plate (4) is fixedly provided with a vertical plate (52). A motor (53) is provided on one side of the vertical plate (52), and the output end of the motor (53) passes through the vertical plate (52) and is fixedly provided with a rotating shaft (54). The inner end of the rotating shaft (54) is fixedly provided with a first bevel gear (55), and the first bevel gear (55) meshes with the second bevel gear (51). The upper surface of the second bevel gear (51) is fixedly provided with a threaded tube (56), and the threaded tube (56) is internally threaded and connected with a stud (57), and the upper end of the stud (57) is fixedly connected to the push plate (5).

2. An injection mold with a secondary ejection structure as defined in claim 1, characterized in that: The top plate (43) penetrates the bottom plate (1), and the outer surface dimensions of the top plate (43) are the same as the inner wall dimensions of the lower mold (3).

3. An injection mold with a secondary ejection structure as defined in claim 1, wherein: The lower surface of the base plate (1) is symmetrically fixed with support legs (11), and the lower end of the support legs (11) is at the same height as the lower end of the electric push rod (41).

4. The injection mold with secondary ejection structure of claim 1, wherein: One end of the rotating shaft (54) is rotatably connected to the vertical plate (52).

5. The injection mold with secondary ejection structure of claim 1, wherein: A protective plate (58) is fixedly provided on the outside of the vertical plate (52), and the protective plate (58) is fixedly connected to the motor (53).

6. An injection mold with a secondary ejection structure as defined in claim 1, wherein: The upper surface of the support plate (4) is symmetrically fixed with positioning posts (59), and the lower surface of the push plate (5) is symmetrically fixed with sleeves (510), and the sleeves (510) are sleeved on the positioning posts (59).

7. An injection mold with secondary ejection structure as claimed in claim 1, characterized in that: The upper surface of the top plate (43) is provided with a groove (44) for use with the push plate (5).

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