Blade mold

Abstract

This utility model discloses a blade mold, including a lower mold and an upper mold. The lower mold is located below the upper mold and the two are configured to cooperate with each other. The opposing surfaces of both the lower and upper molds have corresponding blade forming grooves. The bottom of the lower mold is fixedly connected to a first fixing pipe, the bottom of which is threadedly connected to a feed pipe. The top of the upper mold is fixedly connected to multiple second fixing pipes, each of which is threadedly connected to an air outlet pipe at its bottom. A guiding mechanism is provided between the lower and upper molds, and a disassembly mechanism is provided on the upper mold. This utility model achieves initial positioning through the cooperation of a rod and a sleeve, while protrusions and concave blocks further enhance sealing and positioning accuracy. The exhaust and drainage channel formed by the second fixing pipes, the air outlet pipes, and the cup groove can promptly discharge gas and excess injection liquid from inside the mold, preventing cavities in the injection molded parts, ensuring blade dimensional accuracy, and significantly reducing the defect rate.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to blade molds. Background Technology

[0002] In fields such as machinery manufacturing, aerospace, and wind power generation, blades are core components, and their molding quality directly affects equipment performance and efficiency. Therefore, the design and manufacturing of blade molds are of paramount importance. Currently, traditional blade molds mostly adopt a split structure for injection molding, achieving blade shaping by closing the upper and lower molds.

[0003] During the mold closing process of blade molds, the lack of a precise and effective guiding and positioning structure makes it difficult to ensure the rapid and accurate alignment of the upper and lower molds. This not only increases the difficulty of mold closing operations but also easily leads to poor sealing at the mold connection, resulting in leakage during injection molding, which affects the quality of blade molding and production efficiency. In the injection molding stage, most molds do not have reasonable gas venting and excess injection liquid overflow channels, making it impossible for gas inside the mold to be discharged in time. This can easily lead to the formation of cavities inside the injection molded parts, resulting in insufficient structural strength of the blade and increasing the defect rate. To solve the above problems, this application proposes a blade mold. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a blade mold. The initial positioning is achieved through the cooperation of the insert rod and the insert sleeve, and the protrusion and concave block further enhance the sealing and positioning accuracy. The exhaust and liquid drainage channel formed by the second fixed pipe, the air outlet pipe and the cup groove can timely discharge the gas and excess injection liquid inside the mold, avoid the formation of cavities in the injection molded parts, ensure the dimensional accuracy of the blade, and greatly reduce the defect rate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A blade mold includes a lower mold and an upper mold. The lower mold is located below the upper mold and the two are fitted together. The opposite surfaces of the lower mold and the upper mold are provided with matching blade forming grooves. The bottom of the lower mold is fixedly connected to a first fixing pipe, and the bottom of the first fixing pipe is threadedly connected to a feed pipe. The top of the upper mold is fixedly connected to multiple second fixing pipes, and the bottom of each second fixing pipe is threadedly connected to an air outlet pipe. The top of the upper mold is provided with multiple cup grooves that mate with the air outlet pipes. A guide mechanism is provided between the lower mold and the upper mold. Multiple fixing rods are threadedly connected to the upper mold. The upper mold is provided with a disassembly mechanism.

[0007] Preferably, the guiding mechanism includes two insert rods disposed on and fixedly connected to the lower mold, and two insert sleeves fixedly connected to the bottom of the upper mold, wherein the insert rods are inserted into the insert sleeves, a protrusion is fixedly connected to the top of the lower mold, and a concave block is fixedly connected to the bottom of the upper mold, wherein the protrusion is inserted into the concave block.

[0008] Preferably, the disassembly mechanism includes a detachable plate fixedly connected to the upper mold, the upper mold having an opening, one end of the fixing rod being placed inside the opening, and one end of the fixing rod having a hexagonal groove.

[0009] Preferably, the outer wall of the first fixed tube is provided with a first external thread, and the feed tube is provided with a first internal thread that mates with the first external thread; the outer wall of the air outlet tube is provided with a second external thread, and the second fixed tube is provided with a second internal thread that mates with the second external thread.

[0010] Preferably, the upper mold has a through threaded hole, and the outer wall of the fixing rod and the inner wall of the threaded hole are respectively provided with a third external thread and a third internal thread that cooperate with each other. The two ends of the threaded hole are respectively connected to the blade forming groove and the through port.

[0011] Preferably, the outer wall of the ring rod is provided with a fourth external thread, and both the lower mold and the upper mold are provided with mounting holes, the inner wall of the mounting holes being provided with a fourth internal thread that mates with the fourth external thread.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. In the mold closing stage, the insertion rod and the insertion sleeve cooperate to achieve initial positioning. The protrusion and concave block further enhance the sealing and positioning accuracy, ensuring that the upper and lower molds can be quickly and accurately aligned. This reduces the difficulty of mold closing operation and effectively avoids leakage during injection molding, thereby improving the quality of blade molding and production efficiency.

[0014] 2. During the injection molding process, the first fixed tube and the feed tube work together to stably introduce the injection liquid. The second fixed tube, the vent tube, and the cup groove form an exhaust and drainage channel, which can timely discharge the gas and excess injection liquid inside the mold, avoid the formation of cavities in the injection molded parts, ensure the dimensional accuracy of the blades, and significantly reduce the defect rate.

[0015] In summary, the initial positioning is achieved through the cooperation of the insert rod and the insert sleeve, while the protrusion and concave block further enhance the sealing and positioning accuracy. The exhaust and liquid drainage channel formed by the second fixed pipe, the vent pipe and the cup groove can promptly discharge the gas and excess injection liquid inside the mold, avoid the formation of cavities in the injection molded parts, ensure the dimensional accuracy of the blades, and significantly reduce the defect rate. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the blade mold proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the first cross-section of the blade mold proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the second cross section of the blade mold proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the third cross-section of the blade mold proposed in this utility model.

[0020] In the diagram: 1 Lower mold, 2 Upper mold, 3 Blade forming groove, 4 First fixing pipe, 5 Feed pipe, 6 Second fixing pipe, 7 Air outlet pipe, 8 Cup groove, 9 Insert rod, 10 Insert sleeve, 11 Protrusion, 12 Concave block, 13 Fixing rod, 14 Detachable plate, 15 Through port, 16 Ring rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 The blade mold includes a lower mold 1 and an upper mold 2. The lower mold 1 is located below the upper mold 2 and the two are configured to cooperate with each other. The opposite surfaces of the lower mold 1 and the upper mold 2 are provided with matching blade forming grooves 3. The blade forming grooves 3 together define the final shape of the blade to ensure that the blade meets the specifications after injection molding. The bottom of the lower mold 1 is fixedly connected to a first fixing pipe 4. The bottom of the first fixing pipe 4 is threadedly connected to a feed pipe 5. The feed pipe 5 stably introduces the injection molding liquid into the blade forming groove 3. The outer wall of the first fixing pipe 4 is provided with a first external thread, and the feed pipe 5 is provided with a first internal thread that cooperates with the first external thread.

[0023] The top of the upper mold 2 is fixedly connected to multiple second fixed pipes 6. The second fixed pipes 6 provide channels for gas discharge and excess injection liquid to flow out. The second fixed pipes 6 cooperate with the vent pipes 7 to maintain the pressure balance inside the mold. The bottom of each second fixed pipe 6 is threadedly connected to the vent pipe 7. The outer wall of the vent pipe 7 is provided with a second external thread. The second fixed pipe 6 is provided with a second internal thread that mates with the second external thread. The top of the upper mold 2 is provided with multiple cups 8 that mate with the vent pipes 7. The cups 8 can store excess injection liquid. The operator can hold the vent pipe 7 and rotate it to remove it, and the injection liquid in the cups 8 can flow back into the blade forming groove 3.

[0024] A guide mechanism is provided between the lower mold 1 and the upper mold 2. The guide mechanism includes two insert rods 9 fixedly connected to the lower mold 1 and two insert sleeves 10 fixedly connected to the bottom of the upper mold 2. The insert rods 9 are inserted into the insert sleeves 10. The insert rods 9 and the insert sleeves 10 cooperate to achieve the initial guiding and positioning when the lower mold 1 and the upper mold 2 are closed, ensuring that the two are quickly and accurately aligned. A protrusion 11 is fixedly connected to the top of the lower mold 1 and a concave block 12 is fixedly connected to the bottom of the upper mold 2. The protrusion 11 is inserted into the concave block 12. The protrusion 11 and the concave block 12 further enhance the sealing and positioning accuracy after mold closing, preventing misalignment during injection molding.

[0025] The upper mold 2 is threaded with multiple fixing rods 13. The upper mold 2 has threaded holes. The outer wall of the fixing rod 13 and the inner wall of the threaded hole are respectively provided with a third external thread and a third internal thread that match. The two ends of the threaded hole are respectively connected to the blade forming groove 3 and the through port 15. The fixing rod 13 is threaded to the upper mold 2. During the blade injection molding process, the mounting groove is formed to reduce the weight of the product. The upper mold 2 is provided with a disassembly mechanism, which includes a detachable plate 14 fixedly connected to the upper mold 2. The upper mold 2 has a through port 15. One end of the fixing rod 13 is placed in the through port 15. One end of the fixing rod 13 has a hexagonal groove to facilitate the disassembly and installation of the fixing rod 13 using tools. The outer wall of the ring rod 16 is provided with a fourth external thread. The lower mold 1 and the upper mold 2 are both provided with mounting holes. The inner wall of the mounting hole is provided with a fourth internal thread that matches the fourth external thread.

[0026] In this invention, the lower mold 1 and the upper mold 2 are closed and sealed. During the mold closing process, the insert rod 9 is inserted into the insert sleeve 10 to complete the initial positioning. Finally, the protrusion 11 is inserted into the concave block 12 to complete the mold closing and sealing of the lower mold 1 and the upper mold 2, ensuring the tight sealing performance at the connection between the two. The injection molding liquid can be injected through the feed pipe 5 and injected into the blade forming groove 3 through the first fixed pipe 4, so that the blade forming groove 3 is filled with injection molding liquid. The gas in the blade forming groove 3 is discharged through multiple second fixed pipes 6 and vent pipes 7 to avoid the occurrence of cavities in the injection molded part. Excess injection molding liquid can also be discharged through the vent pipe 7. Finally, the injection molding liquid in the blade forming groove 3 cools and solidifies to form a blade. The lower mold 1 and the upper mold 2 are separated. At this time, the operator can remove the formed blade (removed along the axial direction of the fixed rod 13). Multiple fixed rods 13 can make multiple mounting grooves for the blade, eliminating the need for subsequent additional drilling and reducing the weight of the blade.

Claims

1. A blade mold, comprising a lower mold (1) and an upper mold (2), characterized in that, The lower mold (1) is located below the upper mold (2) and the two are configured to cooperate. The lower mold (1) and the upper mold (2) have corresponding blade forming grooves (3) on their opposite surfaces. The bottom of the lower mold (1) is fixedly connected to a first fixing pipe (4). The bottom of the first fixing pipe (4) is threadedly connected to a feed pipe (5). The top of the upper mold (2) is fixedly connected to multiple second fixing pipes (6). The bottom of each second fixing pipe (6) is threadedly connected to an air outlet pipe (7). The top of the upper mold (2) has multiple cup grooves (8) that cooperate with the air outlet pipes (7). A guide mechanism is provided between the lower mold (1) and the upper mold (2). Multiple fixing rods (13) are threadedly connected to the upper mold (2). The upper mold (2) has a disassembly mechanism.

2. The blade mold according to claim 1, characterized in that, The guiding mechanism includes two insert rods (9) fixedly connected to the lower mold (1), and two sleeves (10) fixedly connected to the bottom of the upper mold (2). The insert rods (9) are inserted into the sleeves (10). A protrusion (11) is fixedly connected to the top of the lower mold (1), and a concave block (12) is fixedly connected to the bottom of the upper mold (2). The protrusion (11) is inserted into the concave block (12).

3. The blade mold according to claim 1, characterized in that, The disassembly mechanism includes a detachable plate (14) fixedly connected to the upper mold (2). The upper mold (2) has an opening (15). One end of the fixing rod (13) is placed in the opening (15). One end of the fixing rod (13) has a hexagonal groove.

4. The blade mold according to claim 1, characterized in that, The outer wall of the first fixed tube (4) is provided with a first external thread, and the feed tube (5) is provided with a first internal thread that mates with the first external thread; the outer wall of the air outlet tube (7) is provided with a second external thread, and the second fixed tube (6) is provided with a second internal thread that mates with the second external thread.

5. The blade mold according to claim 3, characterized in that, The upper mold (2) has a through threaded hole. The outer wall of the fixing rod (13) and the inner wall of the threaded hole are respectively provided with a third external thread and a third internal thread. The two ends of the threaded hole are respectively connected to the blade forming groove (3) and the through port (15).

6. The blade mold according to claim 1, characterized in that, The outer wall of the ring rod (16) is provided with a fourth external thread. The lower mold (1) and the upper mold (2) are both provided with mounting holes. The inner wall of the mounting hole is provided with a fourth internal thread that mates with the fourth external thread.

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