Injection mold capable of eliminating glue inlet impact

Abstract

The utility model relates to an injection mold, in particular to an injection mold capable of eliminating glue inlet impact, which comprises an upper mold and a lower mold matched with the upper mold, and an injection runner is formed between the upper mold and the lower mold; a plurality of pitched roofs are arranged on the lower mold, pitched roof runners communicated with the injection molding runner are formed on the pitched roofs, and the pitched roof runners are further communicated with a glue inlet formed in the upper mold; the angle ejector mechanism is connected with the angle ejector, and during demolding, the angle ejector is ejected out along with a product under the action of the angle ejector mechanism; and the flow-in direction of the inclined top runner from the glue inlet is vertical to the injection direction of the glue inlet. Due to the arrangement of the pitched roof, the glue inlet and the pitched roof runner are kept in a vertical state, injection molding materials entering from the glue inlet cannot directly impact the surface of a product, the problem that water waves are generated on the surface of the product or the product is deformed can be effectively reduced, and the appearance and quality of the product are effectively improved.

Description

Technical Field

[0001] This utility model relates to an injection mold, specifically an injection mold that eliminates injection impact. Background Technology

[0002] An injection mold is a tool used in the injection molding process, primarily for producing plastic products. It works by injecting molten plastic material into a mold cavity, where it cools and forms the desired shape. An injection mold typically consists of two parts: a moving mold and a fixed mold. The moving mold is mounted on a moving platen of the injection molding machine, while the fixed mold is mounted on a stationary platen. During injection, the moving and fixed molds close to form the cavity, and then separate upon opening to remove the molded plastic product.

[0003] Currently, some products have designated injection points within a specific range based on their appearance requirements. However, some injection points happen to be located on thin, sheet-like ribs, resulting in the injection point appearing as a thin sheet-like rib. Injecting glue at these locations presents several challenges: direct injection (side gate injection) causes the plastic to directly impact the product surface, resulting in watermarks or product deformation, affecting the product's appearance and quality. Using curved gates (banana or horn gates) results in smaller injection openings, but for larger and taller products, filling the injection point may be difficult or impossible. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold that eliminates injection impact, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for eliminating injection impact, comprising an upper mold and a lower mold adapted to the upper mold, wherein an injection runner is formed between the upper mold and the lower mold; the lower mold is provided with a plurality of inclined ejectors, each of which has an inclined ejector runner communicating with the injection runner, and the inclined ejector runner also communicating with a sprue provided on the upper mold; further comprising an inclined ejector mechanism connected to the inclined ejectors, wherein during demolding, the inclined ejectors are ejected along with the product under the action of the inclined ejector mechanism; the flow direction of the inclined ejector runner from the sprue is perpendicular to the injection direction of the sprue.

[0006] As described above, the injection mold for eliminating injection impact includes: an inclined ejector mechanism comprising: an inclined ejector rod that passes through the lower mold and is connected to an inclined ejector seat, wherein one end of the inclined ejector rod away from the inclined ejector seat is connected to the inclined ejector.

[0007] The injection mold for eliminating injection impact as described above: the inclined ejector rod and the inclined ejector seat are fixed by bolts.

[0008] As described above, the injection mold for eliminating injection impact has an opening on one side of the sloping ejector channel for lateral separation of the product from the sloping ejector. After the sloping ejector is installed on the lower mold, the opening is sealed.

[0009] As described above, the injection mold for eliminating injection impact has the following features: a runner ejector pin is also provided through the lower mold, the runner ejector pin extends toward the upper mold and inserts into the injection port.

[0010] The injection mold for eliminating injection impact as described above: the injection port is provided with a hot nozzle for heating the injection plastic entering the injection port.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The inclined ejector is installed on the lower mold and connected to the inclined ejector mechanism. During ejection, the ejector pin of the machine tool presses against the inclined ejector mechanism, which in turn drives the inclined ejector to eject. This allows the inclined ejector to detach from the injection molded product during demolding, facilitating subsequent demolding. Furthermore, the inclined ejector eliminates the possibility of damage or deformation at weak points of the product during demolding. Secondly, the inclined ejector ensures that the sprue and the inclined ejector runner are perpendicular, preventing the injection plastic entering from the sprue from directly impacting the product surface. This effectively reduces watermarks or product deformation, significantly improving the product's appearance and quality. Attached Figure Description

[0012] Figure 1 A cross-sectional view of an injection mold designed to eliminate injection impact;

[0013] Figure 2 A cross-sectional view of the injection mold from another angle to eliminate injection impact;

[0014] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle.

[0015] In the diagram: 1-Upper mold, 2-Lower mold, 3-Runner ejector pin, 4-Angled ejector, 5-Angled ejector runner, 6-Injection runner, 7-Gate, 8-Hot nozzle, 9-Angled ejector rod, 10-Angled ejector seat, 11-Bolt. Detailed Implementation

[0016] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0017] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0018] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0019] Please see Figures 1-3 In this embodiment of the present invention, an injection mold for eliminating injection impact includes an upper mold 1 and a lower mold 2 adapted to the upper mold 1. An injection channel 6 is formed between the upper mold 1 and the lower mold 2. The lower mold 2 is provided with a plurality of inclined ejectors 4, and an inclined ejector channel 5 communicating with the injection channel 6 is formed on the inclined ejector 4. The inclined ejector channel 5 is also connected to the injection port 7 provided on the upper mold 1. The mold also includes an inclined ejector mechanism connected to the inclined ejectors 4. During demolding, the inclined ejectors 4 are ejected along with the product under the action of the inclined ejector mechanism. The flow direction of the inclined ejector channel 5 from the injection port 7 is perpendicular to the injection direction of the injection port 7.

[0020] In this embodiment, the inclined ejector channel 5 is machined on the inclined ejector 4 so that it is compatible with the injection port 7. The inclined ejector 4 is installed on the lower mold 2 and connected to the inclined ejector mechanism. During ejection, the ejector roller of the machine presses against the inclined ejector mechanism, which in turn drives the inclined ejector 4 to eject. This allows the inclined ejector and the injection molded product to detach together during demolding, facilitating subsequent demolding. At the same time, the setting of the inclined ejector 4 can also eliminate the possibility of damage or deformation of the product's weak points during demolding. Secondly, the setting of the inclined ejector 4 ensures that the injection port 7 and the inclined ejector channel 5 remain perpendicular, ensuring that the injection plastic entering from the injection port will not directly impact the product surface. This effectively reduces the problem of watermarks or product deformation on the product surface, effectively improving the product's appearance and quality.

[0021] Furthermore, the design of the inclined runner 5 makes the injection material flow more smoothly during the injection process, reducing resistance and thus improving injection efficiency. The integrated design of the inclined runner 5 and the inclined ejector 4 also avoids the assembly error between the runner and the ejection mechanism in the traditional design, improving the precision and stability of the mold.

[0022] Further, please refer to Figure 2 The inclined ejector mechanism includes an inclined ejector rod 9 that passes through the lower mold 2 and is connected to the inclined ejector seat 10. One end of the inclined ejector rod 9 away from the inclined ejector seat 10 is connected to the inclined ejector 4. In one exemplary embodiment, the inclined ejector rod 9 and the inclined ejector seat 10 are fixed by bolts.

[0023] The inclined ejector seat 10 abuts against the ejector roller on the machine base. During demolding, the inclined ejector seat 10 moves under the action of the ejector roller, thereby driving the inclined ejector 4 to move through the inclined ejector rod 9. This achieves synchronous movement of the inclined ejector 4 and the product, ensuring the smoothness and consistency of the demolding process. In addition, the inclined ejector seat 10 effectively disperses the ejection force transmitted by the ejector roller, avoiding mold damage or deformation caused by excessive local force, and extending the service life of the mold. At the same time, the connection between the inclined ejector seat 10 and the inclined ejector rod 9 is firm and reliable, ensuring stable operation of the inclined ejector mechanism during long-term use, and improving the reliability and durability of the mold.

[0024] Please see Figures 1-3 The inclined ejector 4 has an opening on one side of the inclined ejector flow channel 5 for the product to separate laterally from the inclined ejector 4. After the inclined ejector 4 is installed on the lower mold 2, the opening is sealed. After the product injection is completed and the inclined ejector 4 is ejected, the opening allows the product to move laterally relative to the inclined ejector 4 in order to remove the inclined ejector 4, so as to facilitate the separation of the product from the inclined ejector 4, eliminate flow marks on the inclined ejector, and improve the appearance quality of the product. In addition, the design of the opening makes the separation between the product and the inclined ejector 4 smoother, reduces the resistance during the separation process, thereby reducing the wear of the mold and the inclined ejector mechanism, and further extending the service life of the mold.

[0025] Furthermore, a runner ejector pin 3 is also provided through the lower mold 2. The runner ejector pin 3 extends toward the upper mold 1 and is inserted into the injection port 7. After injection molding is completed, the runner ejector pin 3 can eject the excess injection plastic from the injection port 7 to ensure the smooth separation of the product from the mold. The runner ejector pin 3 is a commonly used technical means in mold making, so it will not be described in detail in this embodiment.

[0026] In this embodiment, a heating nozzle 8 is provided inside the injection port 7 for heating the injection plastic entering the injection port 7.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An injection mold for eliminating injection impact, comprising an upper mold (1) and a lower mold (2) adapted to the upper mold (1), wherein an injection runner (6) is formed between the upper mold (1) and the lower mold (2); characterized in that, The lower mold (2) is provided with a plurality of inclined ejectors (4), and the inclined ejectors (4) are provided with inclined ejector channels (5) that communicate with the injection channel (6). The inclined ejector channels (5) are also connected to the sprue (7) provided on the upper mold (1). The flow direction of the inclined ejector channels (5) from the sprue (7) is perpendicular to the injection direction of the sprue (7). The mold also includes an inclined ejector mechanism connected to the inclined ejectors (4). When demolding, the inclined ejectors (4) are ejected with the product under the action of the inclined ejector mechanism.

2. The injection mold for eliminating injection impact according to claim 1, characterized in that, The inclined jacking mechanism includes: An inclined ejector rod (9) passes through the lower mold (2) and is connected to the inclined ejector seat (10). The end of the inclined ejector rod (9) away from the inclined ejector seat (10) is connected to the inclined ejector (4).

3. The injection mold for eliminating injection impact according to claim 2, characterized in that, The inclined top rod (9) and the inclined top seat (10) are fixed by bolts.

4. The injection mold for eliminating injection impact according to claim 1, characterized in that, An opening is formed on one side of the inclined top flow channel (5) on the inclined top (4) for the product to be laterally separated from the inclined top (4). After the inclined top (4) is installed on the lower mold (2), the opening is blocked.

5. The injection mold for eliminating injection impact according to claim 1, characterized in that, The lower mold (2) is also provided with a flow channel ejector pin (3), which extends toward the upper mold (1) and is inserted into the inlet (7).

6. The injection mold for eliminating injection impact according to claim 1, characterized in that, The inlet (7) is provided with a heating nozzle (8) for heating the injection plastic entering the inlet (7).

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