Sprue forced demolding mechanism of automobile air-inlet grille injection mold

Abstract

The utility model provides a sprue forced demolding mechanism of an automobile air-inlet grille injection mold, and belongs to the technical field of molds. The die comprises a lower die plate, a top plate is arranged on the lower side of the lower die plate, and a forming insert with a lower forming face forming a forming cavity is arranged on the top of the lower die plate in a protruding mode. After a product is subjected to injection molding, when the top plate moves upwards, thrust can be applied to the vertical parting surface position of the product through the side-pulling type ejection mechanism, so that the vertical parting surface position of the product is prevented from being distorted and deformed during ejection, and the side-pulling type ejection mechanism can also move upwards to eject the product and can also push the vertical parting surface position of the product to a certain degree. A plurality of small sliding block core-pulling assemblies can perform automatic core-pulling during mold opening, a built-in ejector block and ejector rod ejection mechanism can be matched with a side-pulling type ejection mechanism to eject a product, and the built-in ejector block and ejector rod ejection mechanism and the small sliding block core-pulling assemblies can be synchronously mounted; and the edge space of the forming insert can be effectively utilized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field relates to a kind of gate strong release mechanism of automobile air intake grille injection mould. BACKGROUND

[0002] Automobile air intake grille is generally formed by mould injection molding, the ejection mechanism of the air intake grille mould in the prior art can only exert thrust from the inside of product from bottom to top, the vertical parting surface position of air intake grille side is easy to distort and deform even damage when ejecting, secondly, small slider core-pulling assembly needs to be set on the forming insert on the lower die plate of air intake grille mould, but small slider core-pulling assembly will occupy a large amount of space at the edge of forming insert, causing the edge of forming insert to be unable to set the ejector rod structure.

[0003] For example, a kind of automobile air intake grille injection mould is disclosed in Chinese patent [application number: 202410386804.3], including movable die holder, the side surface of movable die holder is equipped with upper cavity, fixed mould includes fixed die holder and ejection assembly, fixed die holder is located in the side of movable die holder equipped with upper cavity, the side of fixed die holder towards movable die holder is equipped with lower cavity, upper cavity and lower cavity are matched for processing product, ejection assembly includes ejector rod and ejector block, ejector rod is slidably connected to fixed die holder, ejector block is connected to the end of ejector rod towards movable die holder, the side surface of the side of ejector block away from ejector rod is flush with the cavity bottom of lower cavity, ejector block is equipped with several, several ejector blocks are evenly distributed in the cavity bottom of lower cavity. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problem, provide a kind of gate strong release mechanism of automobile air intake grille injection mould.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of gate strong release mechanism of automobile air intake grille injection mould, including lower die plate, the lower side of lower die plate is provided with top plate, the top of lower die plate is provided with the forming insert with the lower forming surface of forming cavity, the rear side of forming insert is provided with the side extraction type ejection mechanism connected with forming cavity, the side extraction type ejection mechanism is connected with top plate, the periphery of forming insert is also provided with several small slider core-pulling assembly on lower die plate, the lower side of lower die plate is also provided with built-in ejector rod ejection mechanism of ejector block.

[0007] In the gate strong release mechanism of the above-mentioned automobile air intake grille injection mould, the side extraction type ejection mechanism includes the side extraction ejector block arranged at the rear side of forming insert, the inner end of side extraction ejector block is in abutment with the side of forming insert, the side extraction ejector block is connected with the first straight ejector rod fixed on top plate by sliding connection structure, the top of lower die plate is also provided with inclined guide structure connected with side extraction ejector block.

[0008] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the inclined guide structure comprises two inclined guide rods which are obliquely arranged on the lower die plate, the inclined guide rods are inserted into the side pulling ejector block and are in sliding fit with the side pulling ejector block, and the distance between the inclined guide rods and the forming cavity gradually increases from top to bottom.

[0009] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the sliding connection structure comprises a connecting block which is fixed at the top of the first straight ejector rod and has a T-shaped cross section, the bottom of the side pulling ejector block is recessed inward and is provided with a connecting groove which has a T-shaped cross section, and the connecting block is inserted into the connecting groove and is in sliding fit with the connecting groove.

[0010] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the built-in ejector rod ejecting mechanism of the top block comprises a plurality of intermediate top blocks which are embedded on the forming cavity, and the bottoms of the intermediate top blocks are fixed on the top plate through the second straight ejector rod.

[0011] In the gate strong pulling mechanism of the automobile air intake grille injection mold, a plurality of small sliding block core pulling assemblies are arranged on the intermediate top block.

[0012] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the built-in ejector rod ejecting mechanism of the top block further comprises a plurality of third straight ejector rods which are fixed on the top plate, and the top ends of the third straight ejector rods are connected with the forming cavity.

[0013] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the small sliding block core pulling assembly comprises a core pulling sliding block which is slidingly arranged on the forming cavity or the intermediate top block, limit pressing plates are arranged on the two sides of the core pulling sliding block, and a sliding block core pulling structure is arranged on the upper die plate.

[0014] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the sliding block core pulling structure comprises a driving rod which is obliquely fixed on the upper die plate, and the bottom of the driving rod is inserted into the core pulling sliding block and is in sliding connection with the core pulling sliding block.

[0015] In the gate strong pulling mechanism of the automobile air intake grille injection mold, the side of the driving rod is provided with a clamping groove, and the bottom of the upper die plate is fixedly connected with a fixing block which is inserted into the clamping groove.

[0016] Compared with the prior art, the automobile air intake grille injection mold has the advantages that:

[0017] 1. After the product is injection molded, the top plate moves upward and can apply a pushing force to the vertical parting surface position of the product through the side-pulling ejection mechanism, thereby preventing the vertical parting surface position of the product from being distorted during ejection, and the side-pulling ejection mechanism can also move horizontally away from the molding insert while moving upward to eject the product, thereby achieving automatic core pulling, and the small slider core pulling assembly can automatically pull the core when the mold is opened, and the built-in ejector rod ejection mechanism can cooperate with the side-pulling ejection mechanism to eject the product, and the built-in ejector rod ejection mechanism can be installed synchronously with the small slider core pulling assembly, and the edge space of the molding insert can be effectively utilized.

[0018] 2. When the top plate moves upward, the intermediate ejector block can be driven upward by the second straight ejector rod to apply a vertical upward pushing force to the product, thereby preventing the product from being damaged during ejection, and the small slider core pulling assembly can be arranged on the intermediate ejector block, thereby synchronously arranging the intermediate ejector block on the edge of the molding insert while arranging the small slider core pulling assembly, and the edge space of the molding insert can be effectively utilized.

[0019] Other advantages, objects and features of the present application will be partly illustrated in the following description, and will be understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a partial three-dimensional view of the lower mold plate;

[0021] Figure 2 is another partial three-dimensional view of the lower mold plate;

[0022] Figure 3 is a partial structure schematic view of the inside of the lower mold plate;

[0023] Figure 4 is Figure 3 is an enlarged schematic view of position A in the middle.

[0024] In the drawings, the lower mold plate 1, the top plate 2, the lower molding surface 3, the molding insert 4, the side-pulling ejection mechanism 5, the small slider core pulling assembly 6, the built-in ejector rod ejection mechanism 7, the side-pulling ejector block 8, the sliding connection structure 9, the first straight ejector rod 10, the inclined guide structure 11, the inclined guide rod 12, the connecting block 13, the connecting groove 14, the intermediate ejector block 15, the second straight ejector rod 16, the third straight ejector rod 17, the core pulling slider 18, the limiting pressing plate 19, the driving rod 20, and the fixed block 21. DETAILED DESCRIPTION

[0025] As Figures 1-4The utility model discloses a gate strong ejection mechanism of automobile air inlet grille injection mold, including lower die plate 1, the lower side of lower die plate 1 is provided with top plate 2, the top of lower die plate 1 is provided with the forming insert 4 with the lower forming surface 3 of the component forming cavity, the rear side of forming insert 4 is provided with the side extraction type ejection mechanism 5 connected with forming cavity, the side extraction type ejection mechanism 5 is connected with top plate 2, still be provided with a plurality of small slider core-pulling assembly 6 along the circumferential direction of forming insert 4 on lower die plate 1, the downside of lower die plate 1 is also equipped with built-in ejector pin ejector mechanism 7 of top block.

[0026] In the utility model, when the top plate moves upward, the side extraction type ejection mechanism 5 can exert a pushing force on the vertical parting surface position of the product, so as to prevent the vertical parting surface position of the product from being distorted during ejection, and the side extraction type ejection mechanism 5 can also move horizontally away from the forming insert during the upward movement of the product, so as to realize automatic core pulling. The small slider core-pulling assembly 6 can automatically pull the core during mold opening, and the built-in ejector pin ejector mechanism 7 can cooperate with the side extraction type ejection mechanism 5 to eject the product, and the built-in ejector pin ejector mechanism 7 can be installed synchronously with the small slider core-pulling assembly 6, so as to effectively utilize the edge space of the forming insert.

[0027] Specifically, the side extraction type ejection mechanism 5 includes a side extraction top block 8 arranged at the rear side of the forming insert 4, the inner end of the side extraction top block 8 abuts against the side of the forming insert 4, the side extraction top block 8 is connected with a first straight ejector pin 10 fixed on the top plate 2 through a sliding connection structure 9, and the top of the lower die plate 1 is also provided with an inclined guide structure 11 connected with the side extraction top block 8. When the top plate moves upward, the side extraction top block can be driven to move upward by the first straight ejector pin, and the inclined guide structure can drive the side extraction top block to move horizontally away from the forming insert during the upward movement of the side extraction top block, so as to realize automatic core pulling of the side extraction top block. The sliding connection structure can realize the connection between the side extraction top block and the straight ejector pin, and enable the side extraction top block and the straight ejector pin to slide relatively.

[0028] Specifically, the inclined guide structure 11 includes two inclined guide rods 12 arranged on the lower die plate 1, the inclined guide rods 12 are inserted into the side extraction top block 8 and slide with the side extraction top block 8, and the distance between the inclined guide rods 12 and the forming insert 4 gradually increases from top to bottom. When the side extraction top block moves upward, the side extraction top block can move horizontally under the action of the inclined guide rods during the upward movement, so as to separate the side extraction top block and the product.

[0029] Specifically, the sliding connection structure 9 comprises a connection block 13 fixed on the top of the first straight ejector rod 10 and in T-shaped section, the bottom of the side ejector block 8 is concave and provided with a connection groove 14 in T-shaped section, and the connection block 13 is inserted into the connection groove 14 and slidably connected with the connection groove 14. The straight ejector rod and the side ejector block are connected through the connection block and the connection groove, so that the relative sliding between the side ejector block and the straight ejector rod is generated, and the horizontal displacement of the side ejector block is provided when the side ejector block moves upward.

[0030] Specifically, the built-in ejector block ejector rod ejection mechanism 7 comprises a plurality of intermediate ejector blocks 15 embedded on the shaped insert block 4, the bottom of the intermediate ejector block 15 is fixed on the top plate 2 through the second straight ejector rod 16, and a plurality of small slider core pulling assemblies 6 are arranged on the intermediate ejector block 15. When the top plate moves upward, the intermediate ejector block is driven to move upward through the second straight ejector rod to exert a vertical upward thrust on the product, so as to prevent the product from being damaged during ejection. The small slider core pulling assembly 6 is arranged on the intermediate ejector block 15, so that the intermediate ejector block can be arranged on the edge of the shaped insert block at the same time as the small slider core pulling assembly 6 is arranged, and the edge space of the shaped insert block is effectively utilized.

[0031] Specifically, the built-in ejector block ejector rod ejection mechanism 7 further comprises a plurality of third straight ejector rods 17 fixed on the top plate 2, and the top end of the third straight ejector rod 17 is connected with the forming cavity. When the top plate moves upward, the third straight ejector rod can also exert a vertical upward thrust on the product.

[0032] Specifically, the small slider core pulling assembly 6 comprises a core pulling slider 18 slidably arranged on the shaped insert block 4 or the intermediate ejector block 15, and a limiting pressing plate 19 is arranged on both sides of the core pulling slider 18, and further comprises a slider core pulling structure arranged on the upper die plate, the slider core pulling structure comprises a driving rod 20 obliquely fixed on the upper die plate, and the bottom of the driving rod 20 is inserted into the core pulling slider 18 and slidably connected with the core pulling slider 18. When the mold is opened, the upper die plate moves upward to drive the core pulling slider to move horizontally away from the forming cavity to realize automatic core pulling. After the core pulling slider is pulled, the core pulling slider and the product will not interfere when the intermediate ejector block driven by the top plate exerts a thrust on the product.

[0033] Specifically, the side of the driving rod 20 is provided with a clamping groove, and the bottom of the upper die plate is fixedly connected with a fixed block 21 inserted into the clamping groove.

[0034] The working principle of the utility model is: after product injection molding, the vertical parting surface position of the product can be prevented from being distorted when being pushed out by the side extraction type ejection mechanism 5 when the top plate moves upward, and the side extraction type ejection mechanism 5 can also produce horizontal displacement to the side away from the molding insert when moving upward to push out the product to realize automatic core pulling, the small slider core pulling assembly 6 can realize automatic core pulling when the mold is opened, the built-in ejector rod ejection mechanism 7 can cooperate with the side extraction type ejection mechanism 5 to push out the product, and the built-in ejector rod ejection mechanism 7 can be installed synchronously with the small slider core pulling assembly 6 to effectively utilize the edge space of the molding insert;

[0035] When the top plate moves upward, the side extraction ejector block can be driven by the first straight ejector rod to move upward, the inclined guide structure can drive the side extraction ejector block to produce horizontal displacement to the side away from the molding insert when the side extraction ejector block moves upward, so that the automatic core pulling of the side extraction ejector block can be realized, the sliding connection structure can realize the connection of the side extraction ejector block and the straight ejector rod, and the side extraction ejector block and the straight ejector rod can slide relatively, the side extraction ejector block can produce horizontal displacement when moving upward under the action of the inclined guide rod, so that the side extraction ejector block and the product can be separated, and the straight ejector rod and the side extraction ejector block are connected through the connecting block and the connecting groove, so that the relative sliding between the side extraction ejector block and the straight ejector rod can be realized, which provides a prerequisite for the horizontal displacement of the side extraction ejector block when moving upward;

[0036] When the top plate moves upward, the intermediate ejector block can be driven by the second straight ejector rod to move upward to exert vertical upward thrust on the product to prevent the product from being damaged when being pushed out, the small slider core pulling assembly 6 is arranged on the intermediate ejector block 15, so that the intermediate ejector block can be arranged synchronously with the small slider core pulling assembly 6 at the edge of the molding insert, and the edge space of the molding insert is effectively utilized, and the product can also be exerted vertical upward thrust by the third straight ejector rod when the top plate moves upward;

[0037] When the mold is opened, the core pulling slider can be driven by the driving rod to move horizontally to the side away from the molding cavity to realize automatic core pulling, and the core pulling slider and the product will not interfere when the core pulling slider is pulled out and the intermediate ejector block exerts thrust on the product.

[0038] The specific embodiments described in the present document are only illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

[0039] Although the lower die plate 1, the top plate 2, the lower forming surface 3, the forming insert 4, the side-pulling ejection mechanism 5, the small slider core-pulling assembly 6, the built-in ejector rod ejection mechanism 7, the side-pulling ejector 8, the sliding connection structure 9, the first straight ejector rod 10, the inclined guide structure 11, the inclined guide rod 12, the connecting block 13, the connecting groove 14, the intermediate ejector 15, the second straight ejector rod 16, the third straight ejector rod 17, the core-pulling slider 18, the limiting pressing plate 19, the driving rod 20, the fixed block 21 and the like are used more in the text, using these terms is only for more conveniently describing and explaining the essence of the utility model; explaining them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims

1. A gate ejection mechanism for an injection mold of an automobile air intake grille, comprising a lower template (1), characterized in that, The lower template (1) is provided with a top plate (2) on its lower side. The top of the lower template (1) is provided with a forming insert (4) having a lower forming surface (3) that forms a forming cavity. The rear side of the forming insert (4) is provided with a side-pull ejection mechanism (5) connected to the forming cavity. The side-pull ejection mechanism (5) is connected to the top plate (2). The lower template (1) is also provided with several small slider core-pulling components (6) along the circumference of the forming insert (4). The lower template (1) is also provided with a built-in top block ejection mechanism (7).

2. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 1, characterized in that, The side-pull ejection mechanism (5) includes a side-pull ejection block (8) located on the rear side of the molding insert (4). The inner end of the side-pull ejection block (8) abuts against the side of the molding insert (4). The side-pull ejection block (8) is connected to a first straight ejector rod (10) fixed on the top plate (2) through a sliding connection structure (9). The top of the lower template (1) is also provided with an oblique guide structure (11) connected to the side-pull ejection block (8).

3. The gate ejection mechanism for the automotive air intake grille injection mold according to claim 2, characterized in that, The inclined guide structure (11) includes two inclined guide rods (12) that are inclinedly set on the lower template (1). The inclined guide rods (12) are inserted into the side pull-out block (8) and slide in cooperation with the side pull-out block (8). The distance between the inclined guide rods (12) and the forming insert (4) gradually increases from top to bottom.

4. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 2, characterized in that, The sliding connection structure (9) includes a connecting block (13) fixed to the top of the first straight rod (10) and having a T-shaped cross section. The bottom of the side pull-out block (8) is recessed inward and has a connecting groove (14) with a T-shaped cross section. The connecting block (13) is inserted into the connecting groove (14) and slides in cooperation with the connecting groove (14).

5. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 1, characterized in that, The built-in top block and top rod ejection mechanism (7) includes several intermediate top blocks (15) embedded in the molding insert (4), and the bottom of the intermediate top blocks (15) is fixed to the top plate (2) by a second straight top rod (16).

6. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 5, characterized in that, Several small slider core-pulling components (6) are set on the middle top block (15).

7. The gate ejection mechanism for the automotive air intake grille injection mold according to claim 5, characterized in that, The built-in top block ejector mechanism (7) also includes several No. 3 straight ejector rods (17) fixed on the top plate (2), and the top end of the No. 3 straight ejector rods (17) is connected to the molding cavity.

8. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 6, characterized in that, The small slider core-pulling assembly (6) includes a core-pulling slider (18) that is slidably disposed on the molding insert (4) or the intermediate top block (15). Limiting pressure plates (19) are provided on both sides of the core-pulling slider (18), and a slider core-pulling structure disposed on the upper template is also included.

9. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 8, characterized in that, The slider core-pulling structure includes a drive rod (20) that is tilted and fixed on the upper template. The bottom of the drive rod (20) is inserted into the core-pulling slider (18) and slidably connected to the core-pulling slider (18).

10. The gate ejection mechanism of the automotive air intake grille injection mold according to claim 9, characterized in that, The drive rod (20) has a slot on its side, and the bottom of the upper template is fixedly connected to a fixing block (21) that is inserted into the slot.

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