Injection mold for coaming panel

Abstract

The utility model discloses a kind of vice driver decorative strip panel injection mould, including ejector pin, ejector pin plate, lower mould insert needle and by upper to lower sequentially arranged panel, runner mounting plate, front template, rear template, square iron block and bottom plate, front template is equipped with front die, rear template is equipped with rear die, front die is correspondingly set with rear die, and form cavity, rear die includes first module group and second module group, the outer periphery of second module group and first module group cooperate, exhaust hole and exhaust groove are equipped on the inner side wall of second module group, exhaust hole is communicated with cavity, exhaust groove is located at the bottom end of exhaust hole, and is communicated with exhaust hole, exhaust groove is downwardly perforated second module group. Therefore, when glue is injected into cavity, gas in cavity is extruded to exhaust hole, is discharged to exhaust groove through exhaust hole, is discharged again through exhaust groove, avoid gas to be accumulated in cavity and be extruded into product, to avoid forming air hole in product, improve the quality of product, improve product yield.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to an injection mold for a passenger side trim panel. Background Technology

[0002] The passenger side trim panel has a large surface area, which makes it easy for uneven filling to occur in different areas during injection molding. In addition, due to the large cavity space, air can easily be squeezed into the molded product during injection, causing air bubbles to form inside the product, affecting the quality of the product and resulting in a high defect rate. Summary of the Invention

[0003] The purpose of this utility model is to provide a passenger side trim panel injection mold that can solve at least one of the above problems.

[0004] According to one aspect of this utility model, a passenger-side trim panel injection mold is provided, including ejector pins, ejector plate, lower mold inserts, and panels, runner mounting plate, front mold plate, rear mold plate, square iron block, and base plate arranged from top to bottom. A front mold core is provided below the front mold plate, and a rear mold core is provided on the rear mold plate. The front mold core and the rear mold core are correspondingly arranged to form a cavity. The ejector plate is located inside the square iron block. One end of the ejector pin is fixed on the ejector plate, and the other end extends into the cavity. The rear mold core includes a first module group and a second module group. The second module group fits with the outer periphery of the first module group. The inner sidewall of the second module group is provided with an exhaust hole and an exhaust groove. The exhaust hole communicates with the cavity, and the exhaust groove is located at the bottom end of the exhaust hole and communicates with the exhaust hole. The exhaust groove extends downward through the second module group.

[0005] The beneficial effects of this utility model are as follows: The rear mold core includes a first module group and a second module group, which facilitates the separate processing of the rear mold core before assembly, reducing the processing difficulty of the entire rear mold core; by providing vent holes and vent grooves on the inner sidewall of the second module group, when the mold cavity is injected with glue, the gas in the mold cavity is squeezed to the vent hole, discharged through the vent hole to the vent groove, and then discharged through the vent groove, thus avoiding the accumulation of gas in the mold cavity and its squeezing into the product, thereby avoiding the formation of air holes inside the product, improving product quality, and increasing product yield.

[0006] In some implementations, the first module group includes multiple first modules, which are sequentially assembled along a horizontal direction. This facilitates the processing of the first module group and reduces processing difficulty.

[0007] In some embodiments, the second module group includes multiple second modules, each located on the outer periphery of a corresponding first module, and each second module has an exhaust port and an exhaust groove on its inner side. Therefore, by providing multiple second modules, the machining difficulty of the entire second module group is reduced.

[0008] In some embodiments, each second module has a guide block at its top, and the front mold core has a guide hole that mates with the guide block. Therefore, the mate between the guide block and the guide hole helps to ensure the fitting accuracy between the front and rear mold cores, thereby guaranteeing the injection molding quality of the product.

[0009] In some embodiments, the runner mounting plate includes a runner plate with heating tubes and multiple injection ports, each connected to the mold cavity. Thus, by providing heating tubes, the adhesive on the runner plate can be heated, increasing the flow rate of the adhesive, facilitating uniform filling, and ensuring product quality uniformity.

[0010] In some embodiments, cooling pipes are provided on both the front and rear mold plates. This allows the molded product to cool and solidify rapidly after injection molding, significantly shortening the entire injection molding cycle.

[0011] In some embodiments, the passenger side trim panel injection mold also includes multiple ejector cylinders, which are respectively fixed on opposite sides of the rear mold plate. The cylinder body of the ejector cylinder is fixed on the rear mold plate, and the piston rod of the ejector cylinder is connected to the ejector plate. Thus, the ejector cylinders facilitate the up-and-down movement of the ejector plate, making it easier for the molded product to be ejected and demolded.

[0012] In some embodiments, the passenger side trim panel injection mold further includes a slider, side inserts, and a slanted guide rod. The slanted guide rod is fixed below the front mold plate, the slider is located on the rear mold plate, the side inserts are connected to the slider, and the slanted guide rod cooperates with the slider. Thus, the side inserts facilitate the molding of the corresponding structure on the product. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the injection mold of the passenger side trim panel of this utility model in the mold-closed state; Figure 2 This is a cross-sectional structural schematic diagram of the injection mold for the passenger side trim panel of this utility model; Figure 3 This is a schematic diagram of the structure of the passenger side trim panel after the panel has been removed from the injection mold of this utility model; Figure 4 This is a schematic diagram of the structure of the product inside the mold cavity after injection molding; Figure 5 This is a structural diagram of the rear template, rear mold core, and other structures in the injection mold of the passenger side trim panel of this utility model; Figure 6 yes Figure 5 A structural diagram showing the first module when it is hidden. Figure 7 yes Figure 5 A cross-sectional structural diagram. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] Reference Figures 1-7 The passenger side trim panel injection mold includes ejector pins 10, ejector plates 20, lower mold inserts 3, and panels 4, runner mounting plates 5, front mold plates 6, rear mold plates 7, square iron blocks 8, and base plates 9 arranged from top to bottom. A front mold core 1 is provided below the front mold plate 6, and a rear mold core 2 is provided on the rear mold plate 7. The front mold core 1 and the rear mold core 2 are correspondingly arranged to form a cavity. The ejector plate 20 is located inside the square iron block 8. One end of the ejector pin 10 is fixed on the ejector plate 20, and the other end extends into the cavity. The rear mold core 2 includes a first module group 21 and a second module group 22. The second module group 22 fits with the outer periphery of the first module group 21. The inner sidewall of the second module group 22 is provided with vent holes 23 and vent grooves 24. The vent holes 23 communicate with the cavity, and the vent grooves 24 are located at the bottom end of the vent holes 23 and communicate with the vent holes 23. The vent grooves 24 penetrate downward through the second module group 22.

[0016] When the injection mold of the passenger side trim panel of this utility model is closed, the front mold core 1 moves to the side of the rear mold core 2 and cooperates with the rear mold core 2 to achieve mold closing; then, glue is injected into the cavity, and the corresponding passenger side trim panel is obtained by injection molding in the cavity; after the injection molding is completed, the front mold plate 6 drives the front mold core 1 away from the rear mold core 2 to achieve mold opening, and then the ejector plate 20 drives the ejector pin 10 to move upward, ejecting the product from the cavity.

[0017] Because the inner wall of the second module group 22 is provided with vent holes 23 and vent grooves 24, and the vent holes 23 are 0.02mm wide, they facilitate the discharge of air from the cavity and prevent the colloid from leaking out. The vent grooves 24 are wider than the vent holes 23, which facilitates the rapid discharge of air. With the vent holes 23, when the mold is closed for injection molding, the colloid entering the cavity compresses the air in the cavity, causing the air to be discharged through the vent holes 23 and vent grooves 24. This prevents air from accumulating in the cavity and thus prevents air from being forced into the product, effectively preventing the formation of air holes in the product and ensuring the injection molding quality of the product.

[0018] The first module group 21 includes multiple first modules 211, which are sequentially spliced ​​together along the horizontal direction.

[0019] The second module group 22 includes multiple second modules 221, each second module 221 being located on the outer periphery of the corresponding first module 211, and each second module 221 having an exhaust hole 23 and an exhaust groove 24 on its inner side.

[0020] During installation, multiple first modules 211 are sequentially spliced ​​onto the rear template 7; then, each second module 221 is installed one by one on the outside of the first module 211, and the second module 221 is clamped and fixed by the first module 211 and the rear template 7, thus completing the installation of the mold core 2 on the rear template 7.

[0021] Each second module 221 has a guide block 223 formed at its top, and the front mold core 1 has a guide hole that mates with the guide block 223. Therefore, when the mold is closed, the guide hole on the front mold core 1 aligns with the guide block 223, allowing the guide block 223 to gradually insert into the guide hole and mate with it, thereby achieving a precise fit between the front mold core 1 and the rear mold core 2 and ensuring the mold closing accuracy.

[0022] The runner mounting plate 5 contains a runner plate 51, on which a heating tube 30 is mounted. The runner plate 51 has multiple injection ports 511, each connected to the mold cavity. Each injection port 511 is located below the runner plate 51, allowing for simultaneous injection of glue into the mold cavity, thus quickly filling the cavity.

[0023] By providing a heating tube 30 on the runner plate 51, the colloid inside the runner plate 51 can be heated, which helps to increase the injection speed of the colloid and improve the uniformity of the colloid filling in the cavity, thus ensuring the injection quality of the product.

[0024] Both the front mold plate 6 and the rear mold plate 7 are equipped with cooling pipes 40. Therefore, by providing cooling pipes 40, external cooling oil can be introduced to cool the front mold plate 6 and the rear mold plate 7, which facilitates the cooling treatment of the front mold core and the rear mold core, facilitates the rapid cooling and shaping of the product in the cavity, shortens the entire molding cycle, and improves production efficiency.

[0025] The passenger side trim panel injection mold of this utility model also includes an ejector cylinder 50. There are multiple ejector cylinders 50, which are respectively fixed on opposite sides of the rear template 7. The cylinder body of the ejector cylinder 50 is fixed on the rear template 7, and the piston rod of the ejector cylinder 50 is connected to the ejector plate 20.

[0026] After the product is injection molded in the cavity, the piston rod of the ejector cylinder 50 is pulled upward, causing the ejector plate 20 to move upward. The ejector plate 20, along with the ejector pins 10, moves upward together, ejecting the product out of the cavity. After the product is ejected and demolded, the piston rod of the ejector cylinder 50 extends downward, pushing the ejector plate 20 and ejector pins 10 to return to their original positions, facilitating the next ejection and demolding of the product.

[0027] The passenger side trim panel injection mold of this utility model also includes a slider 60, a side insert 70 and an inclined guide rod 80. The inclined guide rod 80 is fixed below the front template 6, the slider 60 is set on the rear template 7, the side insert 70 is connected to the slider 60, and the inclined guide rod 80 cooperates with the slider 60.

[0028] Specifically, when the mold is closed, the front mold plate 6 moves downwards along with the inclined guide rod 80, inserting the inclined guide rod 80 into the slider 60 and moving the slider 60 towards one side of the cavity. The side insert pins 70 move towards the cavity along with the slider 60 and extend into the cavity, thus closing the mold. Conversely, when the product is opened, the front mold plate 6 moves away from the rear mold plate 7. Under the action of the inclined guide rod 80, the slider 60 and the side insert pins 70 move away from the cavity, allowing the side insert pins 70 to be pulled out of the cavity for easy demolding.

[0029] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An injection mold for a passenger-side trim panel, characterized in that, The mold includes an ejector pin (10), an ejector plate (20), a lower mold insert (3), and, from top to bottom, a panel (4), a runner mounting plate (5), a front mold plate (6), a rear mold plate (7), a square iron block (8), and a base plate (9). The front mold plate (6) has a front mold core (1) below it, and the rear mold plate (7) has a rear mold core (2) on it. The front mold core (1) and the rear mold core (2) are arranged correspondingly to form a cavity. The ejector plate (20) is located inside the square iron block (8), and one end of the ejector pin (10) is fixed to the ejector plate. (20) The other end extends into the cavity. The rear mold core (2) includes a first module group (21) and a second module group (22). The second module group (22) is fitted with the outer periphery of the first module group (21). The inner sidewall of the second module group (22) is provided with an exhaust hole (23) and an exhaust groove (24). The exhaust hole (23) is connected to the cavity. The exhaust groove (24) is located at the bottom end of the exhaust hole (23) and is connected to the exhaust hole (23). The exhaust groove (24) extends downward through the second module group (22).

2. The injection mold for the passenger side trim panel according to claim 1, characterized in that, The first module group (21) includes multiple first modules (211), which are sequentially spliced ​​together along the horizontal direction.

3. The injection mold for the passenger side trim panel according to claim 2, characterized in that, The second module group (22) includes multiple second modules (221), each second module (221) is located on the outer periphery of the corresponding first module (211), and each second module (221) has an exhaust hole (23) and an exhaust groove (24) on its inner side.

4. The injection mold for the passenger side trim panel according to claim 3, characterized in that, Each of the second modules (221) has a guide block (223) at its top, and the front mold core (1) has a guide hole that cooperates with the guide block (223).

5. The injection mold for the passenger side trim panel according to any one of claims 1 to 4, characterized in that, The flow channel mounting plate (5) is provided with a flow channel plate (51), the flow channel plate (51) is provided with a heating tube (30), and the flow channel plate (51) is provided with a plurality of injection ports (511), each of the injection ports (511) being connected to the cavity.

6. The injection mold for the passenger side trim panel according to claim 5, characterized in that, Cooling pipes (40) are provided on both the front template (6) and the rear template (7).

7. The injection mold for the passenger side trim panel according to claim 6, characterized in that, It also includes ejector cylinders (50), there are multiple ejector cylinders (50), which are fixed on opposite sides of the rear template (7). The cylinder body of the ejector cylinder (50) is fixed on the rear template (7), and the piston rod of the ejector cylinder (50) is connected to the ejector plate (20).

8. The injection mold for the passenger side trim panel according to claim 7, characterized in that, It also includes a slider (60), a side pin (70) and a slanted guide rod (80). The slanted guide rod (80) is fixed below the front template (6). The slider (60) is located on the rear template (7). The side pin (70) is connected to the slider (60). The slanted guide rod (80) cooperates with the slider (60).

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