Injection molding mold for conical worm teeth
By designing a conical worm tooth injection molding mold, the coordinated work of components such as the front mold kernel and the rear mold kernel is solved, the problem that the conical worm teeth cannot be produced in one-time in the existing technology is achieved, efficient and precise production is achieved, and costs are reduced and mold life is extended.
Patent Information
- Application Number
- CN202421751365.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The prior art cannot produce conical worm teeth in one piece, and multiple processing equipment and processes are required, resulting in high costs, low efficiency and poor structural strength.
A conical worm tooth injection molding mold is designed, including front mold kernel, rear mold kernel, rear mold insert, T-tooth screw, large gear, T-tooth fixing nut and shingle. Through the coordinated work of these components, effective injection molding of plastic worm gear is achieved.
The mold can improve the processing efficiency of worm teeth, shorten the processing cycle, improve production efficiency, and reduce production costs. It also enhances the strength and rigidity of the mold through special designs and extends the service life.
Smart Images
Figure CN222987438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to an injection molding mold for tapered worm teeth. Background Art
[0002] Tapered worm drive is a common mechanical drive mode, mainly composed of a tapered worm and a worm wheel. Its main function is to realize the drive between two intersecting shafts, usually used in a speed reducer to play a role in reducing speed and increasing torque. The tapered worm tooth is a worm tooth with the shape of a worm tooth and a taper at the root diameter and the tip diameter. Its characteristics are: a large transmission ratio can be obtained, the transmission is stable, there is no noise, the pre-tightening force is small, the reliability is high, the transmission efficiency is high, and it has self-locking property.
[0003] At present, the processing machinery used for producing tapered worm teeth cannot be formed in one step. It is machined through multiple processing equipment and N processing techniques, with high cost, low efficiency, and poor structural strength. Content of the Utility Model
[0004] To solve the above technical problems, the utility model provides an injection molding mold for tapered worm teeth.
[0005] The utility model is realized by the following technical solutions: an injection molding mold for tapered worm teeth, including a front mold core. The bottom end of the front mold core is clamped with a rear mold core. A rear mold insert is fixedly connected inside the rear mold core. A T-thread screw is fixedly connected to the bottom end of the rear mold insert. A large gear is meshed with the surface of the T-thread screw. The T-thread screw is fixedly connected inside a T-thread fixing nut. A ejector barrel is fixedly connected to a point of the T-thread fixing nut. A ejector pin is slidably connected inside the ejector barrel. A reciprocating oil cylinder is fixedly connected to the surface of the T-thread fixing nut. A rack is fixedly connected to the right end of the reciprocating oil cylinder.
[0006] Through the above technical solutions, the rear mold insert can be specially designed according to the force condition of the mold to enhance the strength and rigidity of the mold, thereby extending the service life of the mold.
[0007] As a further improvement of the above solution, the T-thread fixing nuts are symmetrically distributed with the front mold core as the center, and the ejector pins and the ejector barrels are symmetrically distributed with the front mold core as the center.
[0008] Through the above technical solutions, the ejector pin and the ejector barrel are used in combination and are called an ejector pin assembly, which is a kind of plastic mold fitting. The ejector pin is the ejector pin in the ejector pin assembly.
[0009] As a further improvement of the above solution, a reciprocating oil cylinder is arranged at the bottom end of the rear mold core, a rack is arranged at the bottom end of the rear mold core, and a T-thread fixing nut is arranged on the front surface of the rack.
[0010] Through the above technical solution, the number of T-thread fixing nuts is set to two. Using the inclined plane principle, the inclined plane deformation is integrated to form a thread, and then it is converted into a parallel movement. When the screw nut rotates one circle, it moves to the pitch, and the T-shaped nut saves time and effort.
[0011] As a further improvement of the above solution, the T-thread fixing nut is arranged at the bottom end of the rear mold core, and the front mold core is arranged at the top end of the rear mold insert.
[0012] As a further improvement of the above solution, a reciprocating oil cylinder is arranged at the left end of the front mold core, and a rear mold core is arranged at the left end of the rear mold core.
[0013] As a further improvement of the above solution, a reciprocating oil cylinder is arranged at the left end of the ejector barrel, the ejector barrel is arranged at the right end of the reciprocating oil cylinder, and the ejector barrel is arranged at the bottom end of the rack.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] By setting the overall equipment of the present utility model, the function of this production conical worm gear mold completes the smooth production of conical worm teeth in powder metallurgy forming, breaks through the traditional production method of conical worm teeth, can improve the processing timeliness of worm teeth, shorten the processing cycle, and improve production efficiency.
[0016] The mold of the present utility model usually includes components such as a front mold core, a rear mold core, a rear mold insert, a T-thread screw, a large gear, a T-thread fixing nut, and an ejector barrel. These components work together to achieve the effective injection molding of plastic worm gears. The T-thread fixing nut, the ejector barrel pin, and the ejector barrel are symmetrically distributed with the front mold core as the center, ensuring the balance and stability of the mold structure, enabling high-efficiency and high-precision production, and at the same time reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0018] Figure 2 is a schematic diagram of the anatomical structure of the present utility model;
[0019] Figure 3 is a schematic diagram of the disassembled structure of the front mold core of the present utility model;
[0020] Figure 4 is a schematic diagram of the bottom view structure of the present utility model.
[0021] MAIN SYMBOL DESCRIPTION:
[0022] 1. Front mold core; 2. Rear mold core; 3. Rear mold insert; 4. Large gear; 5. Reciprocating oil cylinder; 6. Rack; 7. T-thread screw; 8. T-thread fixing nut; 9. Ejector barrel; 10. Ejector barrel pin. Detailed implementation mode
[0023] Next, in combination with the accompanying drawings and specific implementation modes, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment.
[0024] Embodiment:
[0025] Please combine Figures 1-4 , the injection molding die for conical worm gear of this embodiment includes a front mold core 1, a rear mold core 2 is clamped at the bottom end of the front mold core 1, a rear mold insert 3 is fixedly connected inside the rear mold core 2, a T-thread screw rod 7 is fixedly connected to the bottom end of the rear mold insert 3, a large gear 4 is meshed on the surface of the T-thread screw rod 7, the T-thread screw rod 7 is fixedly connected inside a T-thread fixing nut 8, a thimble 9 is fixedly connected to the point of the T-thread fixing nut 8, a thimble pin 10 is slidably connected inside the thimble 9, a reciprocating oil cylinder 5 is fixedly connected to the surface of the T-thread fixing nut 8, a rack 6 is fixedly connected to the right end of the reciprocating oil cylinder 5. By setting the overall equipment, the function of this production conical worm gear die completes the smooth production of conical worm gear in powder metallurgy forming, breaks through the traditional production method of conical worm gear, can improve the processing timeliness of worm gear, shorten the processing cycle, and improve production efficiency.
[0026] Through the above technical solution, the rear mold insert 3 can be specially designed according to the force condition of the mold to strengthen the strength and rigidity of the mold, thereby extending the service life of the mold.
[0027] The T-thread fixing nuts 8 are symmetrically distributed with the front mold core 1 as the center, and the thimble pins 10 and the thimbles 9 are symmetrically distributed with the front mold core 1 as the center.
[0028] The thimble pin 10 and the thimble 9 are used in a matching manner and are called the thimble pin 10 assembly, which is a kind of plastic mold accessory. The thimble pin 10 is the ejector pin in the thimble pin 10 assembly.
[0029] A reciprocating oil cylinder 5 is arranged at the bottom end of the rear mold core 2, a rack 6 is arranged at the bottom end of the rear mold core 2, and a T-thread fixing nut 8 is arranged on the front surface of the rack 6.
[0030] The number of the T-thread fixing nuts 8 is set to two. Using the inclined plane principle, integrating the inclined plane deformation to form a thread, and then converting it into a parallel movement, moving to the pitch around one turn of the lead screw nut, the T-shaped nut saves time and effort.
[0031] The T-thread fixing nut 8 is arranged at the bottom end of the rear mold core 2, and the front mold core 1 is arranged at the top end of the rear mold insert 3. By setting, this mold generally includes components such as the front mold core 1, the rear mold core 2, the rear mold insert 3, the T-thread screw rod 7, the large gear 4, the T-thread fixing nut 8, and the ejector sleeve 9. These components work together to achieve the effective injection molding of plastic worm gears. The T-thread fixing nut 8, the ejector pin 10, and the ejector sleeve 9 are symmetrically distributed centered on the front mold core 1, ensuring the balance and stability of the mold structure, enabling high-efficiency and high-precision production, and reducing production costs at the same time.
[0032] A reciprocating oil cylinder 5 is arranged at the left end of the front mold core 1, and the rear mold core 2 is arranged at the left end of the rear mold core 2.
[0033] A reciprocating oil cylinder 5 is arranged at the left end of the ejector sleeve 9, the ejector sleeve 9 is arranged at the right end of the reciprocating oil cylinder 5, and the ejector sleeve 9 is arranged at the bottom end of the rack 6.
[0034] The implementation principle of the conical worm tooth injection molding mold in the embodiment of the present application is: Place the equipment in a suitable position. By setting the overall equipment, the function of this production conical worm tooth mold completes the smooth production of conical worm teeth in powder metallurgy molding, breaking through the traditional production method of conical worm teeth, being able to improve the processing timeliness of worm teeth, shorten the processing cycle, and improve production efficiency. By setting, this mold generally includes components such as the front mold core 1, the rear mold core 2, the rear mold insert 3, the T-thread screw rod 7, the large gear 4, the T-thread fixing nut 8, and the ejector sleeve 9. These components work together to achieve the effective injection molding of plastic worm gears. The T-thread fixing nut 8, the ejector pin 10, and the ejector sleeve 9 are symmetrically distributed centered on the front mold core 1, ensuring the balance and stability of the mold structure, enabling high-efficiency and high-precision production, and reducing production costs at the same time.
[0035] The above implementation manners are only the preferred implementation manners of the present utility model, and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model belong to the protection scope required by the present utility model.
Claims
1. Conical worm gear injection molding mold, characterized in that: The invention comprises a front mold core (1), the bottom end of which is clamped with a rear mold core (2), the interior of the rear mold core (2) is fixedly connected with a rear mold insert (3), the bottom end of the rear mold insert (3) is fixedly connected with a T-thread screw (7), the surface of the T-thread screw (7) is meshed with a large gear (4), the T-thread screw (7) is fixedly connected to the interior of a T-thread fixing nut (8), the point of the T-thread fixing nut (8) is fixedly connected with a sleeve (9), the interior of the sleeve (9) is slidably connected with a sleeve needle (10), the surface of the T-thread fixing nut (8) is fixedly connected with a reciprocating oil cylinder (5), and the right end of the reciprocating oil cylinder (5) is fixedly connected with a rack (6).
2. The conical worm gear injection molding mold according to claim 1, characterized in that: The T-thread fixing nut (8) is symmetrically distributed with the front mold core (1) as the center, and the sleeve needle (10) and the sleeve (9) are symmetrically distributed with the front mold core (1) as the center.
3. The conical worm gear injection molding mold according to claim 1, characterized in that: A reciprocating oil cylinder (5) is arranged at the bottom end of the rear mold core (2), a rack (6) is arranged at the bottom end of the rear mold core (2), and a T-thread fixing nut (8) is arranged on the front side of the rack (6).
4. The conical worm gear injection molding mold according to claim 1, characterized in that: The T-thread fixing nut (8) is arranged at the bottom end of the rear mold core (2), and the front mold core (1) is arranged at the top end of the rear mold insert (3).
5. The conical worm gear injection molding mold according to claim 1, characterized in that: A reciprocating oil cylinder (5) is arranged at the left end of the front mold core (1), and a rear mold core (2) is arranged at the left end of the rear mold core (2).
6. The conical worm gear injection molding mold according to claim 5, characterized in that: A reciprocating cylinder (5) is arranged at the left end of the cylinder (9), a cylinder (9) is arranged at the right end of the cylinder (5), and a cylinder (9) is arranged at the bottom end of the rack (6).