Secondary ejection injection mold for air-inlet grille

Abstract

The secondary ejection injection mold comprises an upper mold and a lower mold which are matched with each other, the lower mold comprises a bottom plate, an ejection block bottom plate, an ejector pin bottom plate and a plate B from bottom to top, an ejection block is arranged on the ejection block bottom plate, an ejector pin is arranged on the ejector pin bottom plate, a driving mechanism is arranged on the side portion of the lower mold, and a driving shaft of the driving mechanism is connected with the ejector pin bottom plate. A base buckling assembly is arranged on the bottom plate, the driving mechanism works to drive the ejector block bottom plate and the ejector pin bottom plate to move towards the upper die at the same time, and when the base buckling assembly is loosened to achieve separation of the ejector block bottom plate and the ejector pin bottom plate, the driving mechanism continues to move and continues to drive the ejector pin bottom plate to move upwards to eject out a product. The secondary ejection of the product is realized through the ejector pin and the ejector block in combination with the buckling base assembly, and the force is decomposed in a secondary ejection mode, so that the adhesion phenomenon of the rhombic position of the product during primary ejection is avoided, the forming efficiency of the product is greatly improved, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, and in particular relates to a secondary ejection injection mold for an air intake grille. Background Art

[0002] The AGS of automobile is the active air intake grille, which can actively control the air intake angle of the air intake grille through the motor. It receives information from relevant sensors through the air intake grille system and controls the opening angle of the blades to adjust the amount of air entering the engine compartment. This system is turned on when the engine needs to be cooled, and when the engine is in a cold state or needs to reach the engine operating temperature quickly, the air intake grille is kept closed to reduce fuel consumption. The structure of the air intake grille is diverse, some have a long strip cross-section and some have a diamond cross-section. Usually, the air intake grille is formed by injection molding. For the air intake grille with a diamond cross-section, due to the deep diamond-shaped ribs, the existing injection mold is used to directly eject the product from the top block, which is easy to cause adhesion with the top block, resulting in a defective rate of the ribs after the product is ejected, which makes the final product easy to break. Not only is the yield rate low, but the overall production efficiency of the product is also not high. Utility Model Content

[0003] The utility model provides a secondary ejection injection mold for an air intake grille, which performs secondary ejection when demoulding the air intake grille, and can avoid adhesion caused by diamond holes of the product through pressure decomposition, thereby improving the yield rate of the product and enhancing production efficiency.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The secondary ejection injection mold for the air intake grille comprises an upper mold and a lower mold which match each other. The lower mold comprises a bottom plate, an ejector block bottom plate, an ejector pin bottom plate, and a B plate from bottom to top. The ejector block is arranged on the top block bottom plate, and an ejector pin is vertically arranged on the ejector pin bottom plate. A driving mechanism is arranged on the side of the lower mold. The driving shaft of the driving mechanism is connected with the ejector pin bottom plate. A buckle base assembly for connecting or separating the top block bottom plate and the ejector pin bottom plate is arranged on the bottom plate. When the driving mechanism works, it drives the top block bottom plate, the ejector pin bottom plate and the ejector panel to move toward the upper mold direction at the same time. When the buckle base assembly is loosened to separate the top block bottom plate from the ejector pin bottom plate, the driving mechanism continues to move, and continues to drive the ejector pin bottom plate to move upward to eject the product.

[0006] Preferably, the driving mechanism is an oil cylinder, the oil cylinder is placed on the B plate, and the driving shaft of the oil cylinder is connected to the ejector bottom plate.

[0007] Preferably, a core is provided in the B plate, and the top block is connected to the top block bottom plate via a top rod.

[0008] Preferably, the buckle base assembly includes a buckle base fixedly connected to the base plate, a buckle base pull rod is provided on the periphery of the buckle base, the buckle base pull rod is connected to the ejector base plate by bolts, and the lower end of the buckle base pull rod abuts against the bottom of the buckle base spring block on the ejector block bottom plate.

[0009] Preferably, a slide groove is provided on the inner side of the buckle base, the lower end of the buckle base pull rod is placed in the slide groove, the inner side of the upper end of the slide groove is provided with an inclined surface, and the inclined surface matches the upper end inclined surface of the buckle base spring block.

[0010] Preferably, the ejector pin passes through the ejector panel, the B plate and the core in sequence, and the top surface thereof abuts against the intersection of adjacent diamond holes of the air intake grille.

[0011] Preferably, an ejector panel is further arranged above the ejector bottom plate.

[0012] The beneficial effects of the utility model are embodied in that the utility model realizes secondary ejection of the product through the ejector pin and the ejector block in combination with the buckle base assembly, and decomposes the force through the secondary ejection, thereby avoiding the adhesion phenomenon of the diamond-shaped position of the product that may occur during the primary ejection, greatly improving the molding efficiency of the product and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 : A schematic diagram of the top view of the lower mold structure of the mold of the utility model.

[0015] Figure 2 :The utility model Figure 1 Schematic diagram of the AA cross-section structure.

[0016] Figure 3 : The utility model Figure 1 Schematic diagram of the structure of some products.

[0017] Figure 4 : The utility model Figure 2 Schematic diagram of the enlarged structure of part B. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-Figure 4It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The utility model proposes a secondary ejection injection mold for an air intake grille, comprising an upper mold and a lower mold that match each other. In the utility model, the upper mold matches the lower mold, and the upper mold is in a conventional form without further modification, so the lower mold form is specifically described below.

[0020] The lower mold includes a bottom plate 1, an ejector block bottom plate 2, an ejector bottom plate 3, an ejector face plate 4, and a B plate 5 in sequence from bottom to top, and a core 81 is arranged in the middle of the B plate 5.

[0021] The top block bottom plate 2 is provided with a top block 6, and the bottom of the top block 6 is connected to the top block bottom plate 2 through a top rod 61. The top pin bottom plate 3 is vertically provided with a top pin 7, and the upper end of the top pin 7 passes through the top pin panel 4, the B plate 5, and enters the core 81 in sequence. The product 8 to be formed in the utility model is evenly distributed with diamond holes. The upper end surface of the top block 6 abuts against the inner end side of the diamond hole, and the top block 6 forms a surface contact with the diamond hole. The top pin 7 passes through the top pin panel, the B plate and the core in sequence, and its top surface abuts against the intersection of the diamond holes adjacent to the air intake grille.

[0022] The side of the lower mold is provided with a driving mechanism, and the driving shaft of the driving mechanism is connected to the ejector bottom plate 3. The bottom plate 1 is provided with a buckle base component for connecting or separating the ejector bottom plate and the ejector bottom plate.

[0023] In this embodiment, the driving mechanism is a cylinder 51, which is connected to the side of the B plate 5, and its cylinder shaft is connected to the ejector base plate 3. The buckle base assembly includes a buckle base 23 fixedly connected to the base plate 1, a slide groove 231 is provided inside the buckle base 23, and a buckle base pull rod 25 is provided on the periphery of the buckle base 23. The upper end of the buckle base pull rod 25 is connected to the ejector base plate 3 by bolts, and the lower end of the buckle base pull rod 25 is placed in the slide groove 231. In addition, the lower end of the buckle base pull rod 25 abuts against the bottom of the buckle base spring block 24 on the side of the ejector block base plate.

[0024] Furthermore, one side of the buckle base spring block 24 is embedded in the side of the top block bottom plate through a spring 242, and its distal end protrudes from the farthest end of the side edge of the top block bottom plate. The lower end 251 of the buckle base pull rod 25 abuts against the lower end of the buckle base spring block 24 protruding outside the top block bottom plate 2. The inner side of the upper end of the slide groove 231 is provided with an inclined surface 232, and the inclined surface 232 matches the upper end inclined surface 241 of the buckle base spring block 24. A distance is provided between the inclined surface 232 and the upper end inclined surface 241. The inner side of the bottom of the buckle base pull rod and the upper end inclined surface 241 of the buckle base spring block also form a matching inclined surface to facilitate the push of the buckle base spring block during resetting.

[0025] When the mold of the utility model is formed, the upper and lower molds are closed and then injection molding is performed. The molding method is the same as the existing injection molding. When demoulding, after the upper and lower molds are opened, at this time, the ejector block bottom plate 2 and the ejector pin bottom plate 3 are connected through the buckle base assembly, and the oil cylinder 51 works. When the ejector pin bottom plate 3 is pulled, the ejector block bottom plate 2 and the ejector panel 4 will be driven to move toward the upper mold at the same time. At this time, the ejector block and the ejector pin will synchronously eject the product 81 once. This is the first ejection of the product, and it is ejected in an integral form. When the upper inclined surface 241 of the buckle base spring block 24 abuts against the inclined surface 232 of the slide groove 231, the buckle base spring block 24 will retract. At this time, the oil cylinder is still in a working state and continues to drive the ejector pin bottom plate 3 to move upward. At the same time, the buckle base pull rod 25 will gradually complete the loosening between the ejector block bottom plate and the ejector pin bottom plate. After loosening, the ejector block bottom plate will not continue to move, and the ejector bottom plate 3 will continue to move, thereby driving the ejector to eject the product twice until the final ejection of the product is completed. During the second ejection, the force between the product and the core will be well dispersed on the basis of the first ejection, thereby avoiding adhesion.

[0026] Finally, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The secondary ejection injection mold for the air intake grille comprises an upper mold and a lower mold that match each other, and is characterized by: The lower mold comprises a bottom plate, an ejector block bottom plate, an ejector pin bottom plate, and a B plate from bottom to top, wherein an ejector block is arranged on the ejector block bottom plate, an ejector pin is vertically arranged on the ejector pin bottom plate, a driving mechanism is arranged on the side of the lower mold, a driving shaft of the driving mechanism is connected with the ejector pin bottom plate, a buckle base assembly for connecting or separating the ejector block bottom plate and the ejector pin bottom plate is arranged on the bottom plate, and when the driving mechanism works, the ejector block bottom plate and the ejector pin bottom plate are driven to move toward the upper mold at the same time, and when the buckle base assembly is loosened to separate the ejector block bottom plate and the ejector pin bottom plate, the driving mechanism continues to move, and continues to drive the ejector pin bottom plate to move upward to eject the product.

2. The secondary ejection injection mold for the air intake grille according to claim 1, characterized in that: The driving mechanism is an oil cylinder, which is placed on the B plate, and a driving shaft of the oil cylinder is connected to the ejector bottom plate.

3. The secondary ejection injection mold for the air intake grille according to claim 2, characterized in that: A core is arranged in the B plate, and the top block is connected to the top block bottom plate through a top rod.

4. The secondary ejection injection mold for the air intake grille according to claim 3, characterized in that: The buckle base assembly includes a buckle base fixedly connected to the bottom plate, a buckle base pull rod is arranged on the periphery of the buckle base, the buckle base pull rod is connected to the ejector bottom plate by bolts, and the lower end of the buckle base pull rod abuts against the bottom of the buckle base spring block on the ejector bottom plate.

5. The secondary ejection injection mold for the air intake grille according to claim 4, characterized in that: A slide groove is arranged on the inner side of the buckle base, the lower end of the buckle base pull rod is placed in the slide groove, the inner side of the upper end of the slide groove is arranged in an inclined surface, and the inclined surface matches the upper end inclined surface of the buckle base spring block.

6. The secondary ejection injection mold for the air intake grille according to claim 1, characterized in that: The ejector pin passes through the ejector panel, the B plate and the core in sequence, and its top surface abuts against the intersection of adjacent diamond holes of the air intake grille.

7. The secondary ejection injection mold for the air intake grille according to claim 1, characterized in that: An ejector panel is also arranged above the ejector bottom plate.

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