Injection mold frame for automobile round ornament

Abstract

The utility model discloses an injection mold frame for automobile round ornament, and the upper end fixed plate is connected with the upper die holder through the connecting plate, the upper end fixed plate center position is provided with the sprue, the connecting plate center position is provided with the feeding channel, the upper die holder upper surface is with the center position and is provided with a plurality of flow channels which are arranged in polar axis array, all flow channels are mutually met in the center position of the upper die holder, and a plurality of discharge channels are arranged at each flow channel, the lower end fixed plate is connected with the lower die holder through the fixed block, the lower die holder is provided with a plurality of ejector pin guide holes, the ejector pin guide hole is below the center position of the lower die holder and is arranged in polar axis array, and the ejector pin on the upper surface of the push plate corresponds with the ejector pin guide hole one by one and is slidably connected, the utility model discloses reasonable structure, in the injection process, material can evenly enter the mold cavity of the mold core, guarantees the quality at the product edge, and can improve the injection efficiency simultaneously, when demolding, the round ornament can be pushed out through the evenly distributed ejector pin, avoids the situation that the product is damaged due to uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of injection mold base technology, specifically to an injection mold base for automotive round trim parts. Background Technology

[0002] Round automotive trim pieces, such as wheel hubcaps, fuel tank caps, some model logos, dashboards, and speaker covers, are generally made by using an injection mold base and a corresponding mold core.

[0003] Most existing injection molds for round automotive trim parts have only one material feeding channel on the upper mold base. During the injection process, in order to fill the edges smoothly, a longer injection time is required, which affects production efficiency. Furthermore, if the ejector pins are not distributed properly, the product may be damaged. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold base for automotive circular trim parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold base for automotive circular trim parts, comprising an upper mold base and a lower mold base; The upper mold frame includes an upper fixed plate, a connecting plate, and an upper mold base. The lower surface of the upper fixed plate is connected to the connecting plate, and the lower surface of the connecting plate is connected to the upper mold base. A gate is provided at the center of the upper fixed plate, and a feeding channel is provided at the center of the connecting plate. The feeding channel is connected to the gate. Several flow channels are arranged in a polar axis array on the upper surface of the upper mold base and at the center of the upper mold base. All the flow channels intersect at the center of the upper mold base and are connected to the feeding channel. An upper mold core mounting groove is provided on the lower surface of the upper mold base. Several unloading channels are provided at each flow channel of the upper mold base. All the unloading channels are connected to the interior of the upper mold core mounting groove. The lower mold base includes a lower fixing plate, fixing blocks, a lower mold base, a push plate, and ejector pins. Fixing blocks are symmetrically arranged on both sides of the upper surface of the lower fixing plate. The upper surface of the fixing blocks is connected to the lower surface of the lower mold base. The upper surface of the lower mold base has a lower mold core mounting groove. The lower mold base has several ejector pin guide holes through it in the vertical direction. The ejector pin guide holes are located at the lower mold core mounting groove. The ejector pin guide holes are arranged in a polar axis array at the center of the lower mold base. The push plate is movably disposed between the lower mold base and the lower fixing plate. Several ejector pins are provided on the upper surface of the push plate. Each ejector pin corresponds to an ejector pin guide hole, and the ejector pin is slidably disposed in the corresponding ejector pin guide hole.

[0006] Preferably, the present invention provides an injection mold base for a circular automotive trim piece, wherein guide posts are provided at the four corners of the connecting plate and the upper mold base, and guide sleeves are provided at the four corners of the lower mold base, and the guide posts and guide sleeves correspond one-to-one and guide each other.

[0007] Preferably, the present invention provides an injection mold frame for a circular automotive trim piece, wherein a plurality of guide rods are provided between the lower end fixing plate and the lower mold base, and the push plate is guided and engaged with the guide rods through guide holes.

[0008] Preferably, the present invention provides an injection mold frame for a circular automotive trim piece, wherein a through hole is provided at the center of the lower fixing plate.

[0009] Preferably, the present invention provides an injection mold base for a circular automotive trim piece, wherein both the upper mold base and the lower mold base are provided with several cooling channels.

[0010] Preferably, the present invention provides an injection mold base for a circular automotive trim piece, wherein the position of the lower mold core mounting groove corresponds to the position of the upper mold core mounting groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The upper mold base has several flow channels arranged in a polar array at its center, and the material discharge channels are evenly distributed within the upper mold base. This allows the material to enter the mold cavity of the mold core evenly during injection molding, ensuring the quality of the product edges and improving injection molding efficiency. Furthermore, the lower mold base has several ejector pin guide holes arranged in a polar array at the center of the lower mold base. When demolding, the evenly distributed ejector pins can push out the circular decorative part, avoiding product damage due to uneven force. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the upper mold base from below. Figure 3 This is a top view of the upper mold base structure. Figure 4 This is a top view of the lower mold base structure. Figure 5 This is a diagram showing the upward view of the upper mold core and upper mold base during assembly. Figure 6 This is a top view diagram of the assembly of the lower mold core and the lower mold base.

[0013] In the diagram: 1. Upper fixing plate; 2. Connecting plate; 3. Upper mold base; 4. Sprue; 5. Feed channel; 6. Runner; 7. Upper mold core mounting slot; 8. Unloading channel; 9. Lower fixing plate; 10. Fixing block; 11. Lower mold base; 12. Push plate; 13. Ejector pin; 14. Lower mold core mounting slot; 15. Ejector pin guide hole; 16. Guide post; 17. Guide sleeve; 18. Guide rod; 19. Through hole; 20. Cooling channel. Detailed Implementation

[0014] The technical solution of this 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 this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: an injection mold frame for automotive round trim parts, including an upper mold frame and a lower mold frame; The upper mold base includes an upper fixed plate 1, a connecting plate 2, and an upper mold base 3. The lower surface of the upper fixed plate 1 is connected to the connecting plate 2, and the lower surface of the connecting plate 2 is connected to the upper mold base 3. A gate 4 is provided at the center of the upper fixed plate 1, and a feeding channel 5 is provided at the center of the connecting plate 2. The feeding channel 5 and the gate 4 are interconnected. Several flow channels 6 are arranged in a polar axis array on the upper surface of the upper mold base 3 and at the center of the upper mold base 3. All the flow channels 6 intersect at the center of the upper mold base 3 and are interconnected with the feeding channel 5. An upper mold core mounting groove 7 is provided on the lower surface of the upper mold base 3. Several unloading channels 8 are provided at each flow channel 6 of the upper mold base 3. All the unloading channels 8 are interconnected with the interior of the upper mold core mounting groove 7. The lower mold base includes a lower fixing plate 9, fixing blocks 10, a lower mold base 11, an ejector plate 12, and ejector pins 13. Fixing blocks 10 are symmetrically arranged on both sides of the upper surface of the lower fixing plate 9. The upper surface of the fixing blocks 10 is connected to the lower surface of the lower mold base 11. A lower mold core mounting groove 14 is formed on the upper surface of the lower mold base 11. The position of the lower mold core mounting groove 14 corresponds to the position of the upper mold core mounting groove 7 to ensure smooth cooperation between the subsequently installed lower and upper mold cores. Several ejector pin guide holes 15 are formed vertically through the lower mold base 11. The ejector pin guide holes 15 are located at the lower mold core mounting groove 14, and the ejector pin guide holes 15 extend below the mold base 11. The center position is arranged in a polar axis array. The push plate 12 is movably set between the lower mold base 11 and the lower end fixed plate 9. Several guide rods 18 are set between the lower end fixed plate 9 and the lower mold base 11. The push plate 12 is guided and cooperated with the guide rods 18 through guide holes to ensure the stability of the push plate 12. Several ejector pins 13 are set on the upper surface of the push plate 12. The ejector pins 13 correspond one-to-one with the ejector pin guide holes 15. The ejector pins 13 are slidably set in the corresponding ejector pin guide holes 15. A through hole 19 is opened at the center position of the lower end fixed plate 9. The press push rod can pass through the through hole 19 to pass through the lower end fixed plate 9, thereby realizing the connection with the push plate 12. Guide pillars 16 are provided at the four corners of the connecting plate 2 and the upper mold base 3, and guide sleeves 17 are provided at the four corners of the lower mold base 11. The guide pillars 16 and guide sleeves 17 correspond one-to-one and guide each other. The cooperation of the guide pillars 16 and guide sleeves 17 ensures the stability of the upper mold base and the lower mold base. Several cooling channels 20 are provided inside the upper mold base 3 and the lower mold base 11 to cool the mold, mold core and materials.

[0016] Usage and operating principle: First, install the upper and lower mold cores of the round automotive trim part into the upper mold core mounting slot 7 and the lower mold core mounting slot 14, respectively. Both the upper and lower mold core cavities are circular, and the material hole and the material discharge channel 8 of the upper mold core correspond one-to-one. The unloading hole of the lower mold core corresponds one-to-one with the position of the ejector pin guide hole 15. Figure 5-6As shown. Before use, the extruder head is connected to the gate 4, and the press push rod passes through the lower fixed plate 9 and is connected to the push plate 12. During use, the mold is first closed, and the material is squeezed from the gate 4 into the feed channel 5, and then enters each runner 6 from the feed channel 5. Next, it enters the mold cavity of the upper mold core and the lower mold core from each discharge channel 8 of the runner 6. The material is cooled by the cooling channel 20 to form the mold. The mold is then opened, and the push plate 12 approaches the lower mold base 11 with the cooperation of the press. The round automotive trim piece is pushed out of the lower mold base 11 by the ejector pin 13. This utility model has a reasonable structure. Several flow channels 6 are arranged in a polar axis array on the upper surface of the upper mold base 3 and at the center of the upper mold base 3. The material discharge channel 8 is evenly distributed in the upper mold base 3. Thus, during the injection molding process, the material can be evenly entered into the mold cavity of the mold core, ensuring the quality of the product edge and improving the injection molding efficiency. In addition, several ejector pin guide holes 15 are opened in the lower mold base 11. The ejector pin guide holes 15 are arranged in a polar axis array at the center of the lower mold base 11. When demolding, the circular decorative part can be pushed out by the evenly distributed ejector pins 13, avoiding product damage caused by uneven force.

[0017] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0018] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An injection mold base for a circular automotive trim piece, characterized in that: Including the upper mold frame and the lower mold frame; The upper mold frame includes an upper fixing plate (1), a connecting plate (2) and an upper mold base (3). The lower surface of the upper fixing plate (1) is connected to the connecting plate (2), and the lower surface of the connecting plate (2) is connected to the upper mold base (3). A gate (4) is provided at the center of the upper fixing plate (1), and a feeding channel (5) is provided at the center of the connecting plate (2). The feeding channel (5) is connected to the gate (4). Several flow channels (6) are arranged in a polar axis array on the upper surface of the upper mold base (3) and at the center of the upper mold base (3). All the flow channels (6) intersect at the center of the upper mold base (3) and are connected to the feeding channel (5). An upper mold core mounting groove (7) is opened on the lower surface of the upper mold base (3). Several unloading channels (8) are opened at each flow channel (6) of the upper mold base (3). All the unloading channels (8) are connected to the interior of the upper mold core mounting groove (7). The lower mold frame includes a lower end fixing plate (9), a fixing block (10), a lower mold base (11), a push plate (12), and ejector pins (13). The fixing blocks (10) are symmetrically arranged on both sides of the upper surface of the lower end fixing plate (9). The upper surface of the fixing block (10) is connected to the lower surface of the lower mold base (11). The upper surface of the lower mold base (11) is provided with a lower mold core mounting groove (14). The lower mold base (11) is provided with a plurality of ejector pin guide holes (15) through it in the vertical direction. The ejector pin guide hole (15) is located at the lower mold core mounting groove (14). The ejector pin guide hole (15) is arranged in a polar axis array at the center position of the lower mold base (11). The push plate (12) is movably disposed between the lower mold base (11) and the lower end fixing plate (9). A number of ejector pins (13) are provided on the upper surface of the push plate (12). The ejector pins (13) correspond one-to-one with the ejector pin guide hole (15). The ejector pins (13) are slidably disposed in the corresponding ejector pin guide hole (15).

2. The injection mold base for a circular automotive trim piece according to claim 1, characterized in that: The connecting plate (2) and the upper mold base (3) are provided with guide posts (16) at their four corners, and the lower mold base (11) is provided with guide sleeves (17) at their four corners. The guide posts (16) and guide sleeves (17) correspond to each other and are guided and fitted together.

3. The injection mold base for a circular automotive trim piece according to claim 1, characterized in that: A number of guide rods (18) are provided between the lower end fixing plate (9) and the lower mold base (11), and the push plate (12) is guided and cooperated with the guide rods (18) through the guide hole.

4. The injection mold base for a circular automotive trim piece according to claim 1, characterized in that: A through hole (19) is provided at the center of the lower end fixing plate (9).

5. The injection mold base for a circular automotive trim piece according to claim 1, characterized in that: Both the upper mold base (3) and the lower mold base (11) have several cooling channels (20) inside.

6. The injection mold base for a circular automotive trim piece according to claim 1, characterized in that: The position of the lower mold core mounting groove (14) corresponds to the position of the upper mold core mounting groove (7).

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