Injection molding device for gear production

Abstract

The utility model discloses an injection molding device for gear production. The injection molding device comprises an upper mold base, a section mold is installed below the upper mold base, a lower mold base is installed below the section mold, an injection molding opening is formed in the middle of the surface of the upper mold base, an injection hole is fixedly formed in the center of the surface of the injection molding opening, an injection channel is connected to the interior of the injection hole, and the injection channel is communicated with the injection molding opening. The lower end of the injection channel is fixedly connected with a shunt pipe; the four corners of the I-shaped flow dividing pipe are carefully connected with the pipelines, output ports at the lower ends of the pipelines are correspondingly provided with the gear type grooves, through the well-designed injection holes, mold liquid can be injected into the injection channels, the mold liquid can flow to the flow dividing pipe along the injection channels, and then the mold liquid flows to all the pipelines through the I-shaped flow dividing pipe. By means of the design, the four sets of gears can be formed at the same time in the single injection molding process, and the single-time gear forming efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of gear manufacturing technology, specifically to an injection molding device for gear manufacturing. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, molds are tools used to create shaped objects. These tools are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of the object by changing the physical state of the material being molded. In transmission components, gear transmission is often used. Gears are one of the most common mechanical parts, and molds are used to shape gears. Injection molding devices are an indispensable part of mold equipment.

[0003] A current publication (CN217831769U) discloses an automotive gear production mold, comprising a processing frame. A forward and reverse motor is welded and fixed to the upper surface of the processing frame. A drive disc is welded and fixed to the output end of the forward and reverse motor. A curved groove is formed on the end face of the drive disc, and a sliding pin is slidably connected inside the curved groove. A drive rod is welded and fixed to the bottom surface of the sliding pin, and a driven shaft is welded and fixed to the bottom end of the drive rod. A lower mold base and an upper mold base are movably connected to the bottom and top surfaces of the processing frame. A mold core is welded and fixed inside both the lower and upper mold bases. Cooling devices are provided on the surfaces of the lower and upper mold bases. This automotive gear production mold can produce gear parts by injecting casting liquid into the mold core, and the cooling devices can quickly cool the formed gear parts, thereby improving the efficiency of gear production.

[0004] In the current gear manufacturing industry, the widely used injection molding devices have certain limitations in operation. Specifically, these devices are designed with a single injection port and a single injection channel. This design means that during production, a set of molds can only be used to produce one set of gears. When production demand increases and more gears need to be manufactured, the number of molds must be increased in order to improve production efficiency. Taking the aforementioned automotive gear production mold as an example, its working principle is to inject a specific casting liquid into the mold core and then use the cooperation of the upper mold base and the lower mold base to complete the gear forming process. However, the drawback of this design is that it can only complete the forming of one set of gears at a time, which undoubtedly limits the further improvement of production efficiency.

[0005] Therefore, those skilled in the art have provided an injection molding apparatus for gear production to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to provide an injection molding device for gear production, so as to solve the problem mentioned in the background art that the existing gear production injection molding device has a single channel corresponding to a single injection molding channel, resulting in poor single gear forming efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A gear manufacturing injection molding device includes: an upper mold base, a mold mounted below the upper mold base, a lower mold base mounted below the mold, an injection port provided in the middle of the surface of the upper mold base, an injection hole fixedly provided in the center of the surface of the injection port, an injection channel connected inside the injection hole, a diversion pipe fixedly connected to the lower end of the injection channel, pipes connected to the bottom of the four corners of the diversion pipe, a gear model provided at the lower end of the pipes, a connecting column fixedly mounted on the back of the upper mold base, and a spring mounted on the bottom of the mold.

[0009] As a further improvement of this utility model: the injection port is connected to the injection channel through the injection hole, and the injection hole is connected to the distribution pipe through the injection channel.

[0010] As a further improvement of this utility model: the external structure of the diversion pipe is in the shape of an "I" and the diversion pipe is connected to the inside of the mold through a pipe.

[0011] As a further improvement of this utility model: a connecting ring is sleeved on the surface of the connecting column, and a threaded upper pull rod is fixedly connected to the lower end of the connecting ring.

[0012] As a further improvement of this utility model: the lower end of the threaded upper pull rod is provided with an adjusting seat, and the lower end of the adjusting seat is connected to a threaded lower pull rod.

[0013] As a further embodiment of this utility model: the upper and lower ends of the adjusting seat are respectively connected to the threaded upper pull rod and the threaded lower pull rod, and a threaded sleeve is installed between the threaded upper pull rod and the threaded lower pull rod, and the ends of the threaded upper pull rod and the threaded lower pull rod are connected to the threaded sleeve by threads.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] An injection port is provided on the surface of the upper mold base. Inside the injection port are injection holes, which are connected to a set of designed injection channels to ensure that the molded liquid can enter smoothly. The lower end of the injection channels is connected to the manifolds. The manifolds have a uniquely designed I-shaped structure. The four corners of the I-shaped manifolds are carefully connected to pipes. The lower outlets of these pipes are correspondingly provided with gear-shaped grooves. Through this carefully designed injection port, the molded liquid can be poured into the injection channels. The molded liquid will flow along these injection channels to the manifolds. Subsequently, the molded liquid flows through the I-shaped manifolds to various pipes, and finally flows into the four sets of gear-shaped grooves. This design allows four sets of gears to be formed simultaneously in a single injection molding process, which significantly improves the efficiency of single gear forming. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an injection molding device for gear production.

[0017] Figure 2 This is a schematic diagram of the connection structure between the injection channel and the manifold of an injection molding device for gear production.

[0018] Figure 3 This is a schematic diagram of the adjusting seat in an injection molding device for gear production.

[0019] Figure 4 This is a schematic diagram of the connection structure between the threaded upper pull rod and the threaded lower pull rod in an injection molding device for gear production.

[0020] In the diagram: 1. Upper mold base; 2. Injection port; 3. Injection hole; 4. Connecting post; 5. Mold; 6. Spring; 7. Lower mold base; 8. Injection channel; 9. Diverter pipe; 10. Pipe; 11. Gear model; 12. Connecting ring; 13. Adjusting seat; 14. Threaded sleeve; 15. Threaded upper pull rod; 16. Threaded lower pull 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4This utility model provides an injection molding device for gear production, including: an upper mold base 1, a mold 5 installed below the upper mold base 1, a lower mold base 7 installed below the mold 5, an injection port 2 provided in the middle of the surface of the upper mold base 1, an injection hole 3 fixedly provided in the center of the surface of the injection port 2, an injection channel 8 connected inside the injection hole 3, a diversion pipe 9 fixedly connected to the lower end of the injection channel 8, pipes 10 connected to the bottom of the four corners of the diversion pipe 9, a gear model 11 provided at the lower end of the pipes 10, the injection port 2 being interconnected with the injection channel 8 through the injection hole 3, and the injection hole 3 being interconnected with the diversion pipe 9 through the injection channel 8, the external structure of the diversion pipe 9 being in the shape of an "I", and the diversion pipe 9 being interconnected with the interior of the mold 5 through the pipes 10;

[0023] Specifically, the molded liquid is injected through the injection hole 3 in the injection port 2. After injection, the molded liquid enters the distribution pipe 9 through the injection channel 8. The I-shaped distribution pipe 9 divides the molded liquid into four groups using the I-shaped structure, and the liquid flows into the corresponding four groups of pipes 10. The molded liquid is then injected into the mold 5 through the pipes 10, completing the injection molding of the gear model 11. This process is a key step in precision injection molding technology. It ensures the uniform distribution of the molded liquid in the mold 5, thereby guaranteeing the quality of the final product. In the design of the distribution pipe 9, the I-shaped structure has a unique diversion effect. It can effectively reduce the pressure loss of the molded liquid during the diversion process, while ensuring that the flow rate of the molded liquid in each group of pipes 10 is consistent. This is crucial for producing a gear model 11 with accurate dimensions and a smooth surface.

[0024] A connecting post 4 is fixedly installed on the back of the upper mold base 1, a spring 6 is installed on the bottom of the mold 5, a connecting ring 12 is sleeved on the surface of the connecting post 4, a threaded upper pull rod 15 is fixedly connected to the lower end of the connecting ring 12, an adjusting seat 13 is provided at the lower end of the threaded upper pull rod 15, a threaded lower pull rod 16 is connected to the lower end of the adjusting seat 13, the upper and lower ends of the adjusting seat 13 are respectively connected to the threaded upper pull rod 15 and the threaded lower pull rod 16, a threaded sleeve 14 is installed between the threaded upper pull rod 15 and the threaded lower pull rod 16, and the ends of the threaded upper pull rod 15 and the threaded lower pull rod 16 are connected to the threaded sleeve 14 by threads.

[0025] Specifically, connecting posts 4 are provided on the back of the upper mold base 1 and the lower mold base 7 of the mold. Corresponding connecting rings 12 are fitted onto these connecting posts 4 to ensure structural stability. Simultaneously, corresponding connecting rings 12 are also connected to the threaded upper pull rod 15 and the threaded lower pull rod 16. These connecting rings 12 allow the threaded upper pull rod 15 and the threaded lower pull rod 16 to connect with the connecting posts 4. To further enhance the stability and adjustability of the mold, an adjusting seat 13 is specially provided between the threaded upper pull rod 15 and the threaded lower pull rod 16. The adjusting seat 13 connects the threaded upper pull rod 15 and the threaded lower pull rod 16 together, forming a tightly fitted structure. Furthermore, the threaded upper pull rod 15 and the threaded lower pull rod 16 are connected to the threaded upper pull rod 15 and the threaded lower pull rod 16... The threaded connection between the threaded sleeves 14 ensures the precise fit of the entire mold. The upper and lower ends of the threaded sleeves 14 are designed with positive and negative threads, which match the thread structure of the threaded upper pull rod 15 and the threaded lower pull rod 16. Through this design, the threaded upper pull rod 15 and the threaded lower pull rod 16 have different rotation directions, so that their movement directions are opposite. This reverse movement characteristic allows the threaded upper pull rod 15 and the threaded lower pull rod 16 to approach each other. Furthermore, through the pulling action of the connecting ring 12, the upper mold base 1 and the lower mold base 7 are effectively tightened. Finally, the upper mold base 1 and the lower mold base 7 can be tightly pressed together to form a robust mold structure, ensuring the stability and reliability of the mold during use.

[0026] The working principle of this utility model is as follows:

[0027] When using this invention, firstly, assemble all components of the mold according to the design requirements, ensuring precise fit between the upper mold base 1, the mold 5, and the lower mold base 7. Then, inject the pre-prepared mold liquid into the mold through the injection hole 3 in the injection port 2. The mold liquid will flow along the injection channel 8 and enter the distribution pipe 9. Due to the I-shaped design of the distribution pipe 9, the mold liquid will be evenly distributed into four sets of pipes 10. Each set of pipes 10 will inject the mold liquid into the corresponding gear model 11 position in the mold 5. In this process, the design of the I-shaped distribution pipe 9 ensures that the pressure loss of the mold liquid is minimized during the distribution process, and the flow rate of the mold liquid in each set of pipes 10 remains consistent, thereby ensuring the final gear model 11. With precise dimensions and a smooth surface, the mold maintains a certain pressure after the molded liquid is injected. By adjusting the threaded upper pull rod 15 and the threaded lower pull rod 16, and utilizing their threaded connection with the threaded sleeve 14, the upper mold base 1 and the lower mold base 7 are tightened and merged to ensure that the molded liquid is fully cured in the mold 5. After the molded liquid is completely cured, by adjusting the threaded upper pull rod 15 and the threaded lower pull rod 16, and utilizing their threaded connection with the threaded sleeve 14, the upper mold base 1 and the lower mold base 7 are separated, thereby removing the formed gear model 11. Throughout the process, the close cooperation of components such as the connecting column 4, the connecting ring 12, and the adjusting seat 13 ensures the stability and reliability of the mold, providing a strong guarantee for the precision injection molding of the gear.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gear manufacturing injection molding device, characterized in that, include: An upper mold base (1) is provided, a mold (5) is installed below the upper mold base (1), a lower mold base (7) is installed below the mold (5), an injection port (2) is provided in the middle of the surface of the upper mold base (1), an injection hole (3) is fixedly provided in the center of the surface of the injection port (2), an injection channel (8) is connected inside the injection hole (3), a diversion pipe (9) is fixedly connected to the lower end of the injection channel (8), a pipe (10) is connected to the bottom of the four corners of the diversion pipe (9), a gear model (11) is provided at the lower end of the pipe (10), a connecting column (4) is fixedly installed on the back of the upper mold base (1), and a spring (6) is installed at the bottom of the mold (5).

2. The injection molding device for gear production according to claim 1, characterized in that, The injection port (2) is connected to the injection channel (8) through the injection hole (3), and the injection hole (3) is connected to the diversion pipe (9) through the injection channel (8).

3. The injection molding device for gear production according to claim 1, characterized in that, The external structure of the diversion pipe (9) is in the shape of an "I" and the diversion pipe (9) is connected to the inside of the mold (5) through the pipe (10).

4. The injection molding device for gear production according to claim 1, characterized in that, A connecting ring (12) is fitted on the surface of the connecting column (4), and a threaded upper pull rod (15) is fixedly connected to the lower end of the connecting ring (12).

5. The injection molding device for gear production according to claim 4, characterized in that, The lower end of the threaded upper pull rod (15) is provided with an adjusting seat (13), and the lower end of the adjusting seat (13) is connected to a threaded lower pull rod (16).

6. The injection molding device for gear production according to claim 5, characterized in that, The upper and lower ends of the adjusting seat (13) are respectively connected to the threaded upper pull rod (15) and the threaded lower pull rod (16). A threaded sleeve (14) is installed between the threaded upper pull rod (15) and the threaded lower pull rod (16). The ends of the threaded upper pull rod (15) and the threaded lower pull rod (16) are connected to the threaded sleeve (14).

Images