Rapid prototyping permanent magnet motor shell pouring mold

Abstract

The utility model relates to quick forming's permanent magnet motor casing pouring mold technical field, and disclose a kind of quick forming's permanent magnet motor casing pouring mold, including main body mechanism and pouring mechanism, the pouring mechanism is fixedly installed in main body mechanism inside, the main body mechanism includes mould, base, shell, the base is fixedly installed in mould bottom end, the shell is fixedly installed on mould outer surface. This has effectively reduced production cost and reduced waste material production, the application of hot runner system realizes the material of gate injection molding, avoids the waste of traditional mould gate condensate, reduces raw material cost. Production efficiency is greatly improved, quick forming cycle, by optimizing pouring system and cooling structure, material solidification time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of rapid prototyping permanent magnet motor housing casting mold technology, specifically a rapid prototyping permanent magnet motor housing casting mold. Background Technology

[0002] Motor housings are typically manufactured using die casting, a metal casting process that involves applying high pressure to molten metal within a mold cavity. The molds are usually made of high-strength alloys, and the cost of casting equipment and molds is high. Therefore, die casting is generally only used for mass production of large quantities of products.

[0003] During the die casting process, the die casting mold is prone to not closing tightly. This can lead to insufficient pressure, which seriously affects the quality of the product and results in a large number of defective motor housing die castings. Alternatively, vibration or displacement may occur during the mold closing process, affecting the die casting accuracy of the mold and the quality of the die castings.

[0004] The existing patent document CN 216502274 U provides a rapid prototyping permanent magnet motor housing casting mold. The die-casting tilting cylinder can use hydraulic pressure to control the lower die-casting mold to be accurately positioned, thereby ensuring the mold closing accuracy of the upper and lower die-casting molds. Combined with the die-casting drive component, it achieves fully automatic control and has a relatively fast operation speed.

[0005] However, existing methods cannot avoid wasting solidified material at the gate in the mold during use. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a rapid prototyping mold for a permanent magnet motor housing, in order to solve the problem of waste mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a rapid prototyping permanent magnet motor housing casting mold, comprising a main body and a casting mechanism, wherein the casting mechanism is fixedly installed inside the main body, the main body includes a mold, a base, and a shell, wherein the base is fixedly installed at the bottom of the mold, and the shell is fixedly installed on the outer surface of the mold;

[0010] The casting mechanism includes a cavity, a core, and a main runner. The cavity is fixedly installed in the center of the mold, the core is fixedly installed in the center of the mold, and the main runner is fixedly installed in the mold.

[0011] Furthermore, the main structure also includes a movable template and a fixed template, with the movable template fixedly installed on the mold and the fixed template fixedly installed on the top of the mold.

[0012] Furthermore, the main body mechanism also includes an ejector plate and an ejector pin, the moving template is fixedly mounted with the ejector plate, and the ejector plate is fixedly mounted with the ejector pin.

[0013] Furthermore, the main body structure also includes guide posts and guide sleeves, with guide posts fixedly connected between the moving template and the fixed template, and guide sleeves fixedly installed on the surface of the guide posts.

[0014] Furthermore, the gating mechanism also includes a runner and a gate, with a runner fixedly installed at the end of the main runner and a gate fixedly installed between the runner and the cavity.

[0015] Furthermore, the casting mechanism also includes cooling water channels and cooling water pipe joints. Cooling water channels are fixedly installed between the moving mold plate and the fixed mold plate inside the mold, and a cooling water pipe joint is fixedly installed on one side surface of the mold.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Significantly improves production efficiency and accelerates molding cycles. By optimizing the gating system and cooling structure, the solidification time of materials is greatly shortened. For example, the efficient cooling channel layout can reduce cooling time by 30%-50%, and the single-mold production cycle is reduced from 10 minutes in traditional molds to 5-7 minutes, significantly increasing output per unit time. 2. Automated operation. An integrated automated control system enables fully automated operation of processes such as mold opening and closing, ejection, and cooling, reducing manual intervention and the risk of human error. It also supports 24-hour continuous operation, increasing production capacity by 2-3 times. 3. Significantly improves product quality and dimensional accuracy. The guiding and positioning structure (such as guide pillars, guide sleeves, and positioning rings) ensures the accuracy of mold closing. Combined with high-precision machined cavities and cores, the dimensional error of the product is controlled within ±0.05mm, meeting the high-precision assembly requirements of permanent magnet motor housings. With excellent surface quality, the rationally designed gating system (main runner, branch runner, gate) ensures uniform material filling and reduces defects such as porosity and shrinkage marks; the uniform cooling effect of the cooling system avoids deformation caused by local temperature differences, and improves the surface smoothness of the product, which can directly meet the application scenarios with high appearance requirements.

[0018] 2. Effectively reduces production costs and waste generation. The application of the hot runner system enables gateless injection molding, avoiding the waste of solidified material from gates in traditional molds. Material utilization rate increases from 85% to over 98%, reducing raw material costs. Extends mold life. High-quality mold materials and reinforced support structures (such as support plates and pads) enhance the mold's compressive strength, reducing deformation and wear caused by high pressure. At the same time, the precise guiding and positioning structure reduces frictional wear of mold components, extending mold life by 2-3 times and reducing mold replacement frequency and maintenance costs. Enhances product design flexibility. Complex structure molding: Through side core-pulling mechanisms such as sliders and inclined guide pillars, complex structures of motor housings (such as side mounting holes and irregularly shaped heat dissipation fins) can be molded in one go without subsequent secondary processing, meeting diverse product design needs. Rapid modification and adaptation: The modular mold structure allows for rapid replacement of some components, adapting to the production needs of different models of permanent magnet motor housings, shortening the new product development cycle, and improving the company's responsiveness to market changes. To enhance production safety and stability, the safety protection design and automated mold operation reduce direct contact between operators and high-temperature, high-pressure components, lowering the risk of workplace injuries. Simultaneously, comprehensive limit and overload protection devices ensure automatic shutdown of the equipment in abnormal situations, guaranteeing production safety. Strong process stability is achieved through precise temperature and pressure control and a stable automated process, reducing process fluctuations during production. The product qualification rate has increased from 88% with traditional molds to over 95%, reducing defect rates and rework costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the top plate structure of this utility model;

[0021] Figure 3 This is a schematic diagram of part of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the mold structure of this utility model.

[0023] In the diagram: 1. Main body; 101. Mold; 102. Base; 103. Outer shell; 104. Moving mold plate; 105. Fixed mold plate; 106. Ejector plate; 107. Ejector pin; 108. Guide pillar; 109. Guide sleeve; 2. Gating mechanism; 201. Cavity; 202. Core; 203. Main runner; 204. Sub-runner; 205. Gate; 206. Cooling water channel; 207. Cooling water pipe joint. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a rapid prototyping permanent magnet motor housing casting mold, including a main body 1 and a casting mechanism 2. The casting mechanism 2 is fixedly installed inside the main body 1. The main body 1 includes a mold 101, a base 102, and a shell 103. The base 102 is fixedly installed at the bottom of the mold 101, and the shell 103 is fixedly installed on the outer surface of the mold 101.

[0026] The casting mechanism 2 includes a cavity 201, a core 202, and a main runner 203. The cavity 201 is fixedly installed in the center of the mold 101, the core 202 is fixedly installed in the center of the mold 101, and the main runner 203 is fixedly installed in the mold 101.

[0027] Furthermore, the main body mechanism 1 also includes a movable template 104 and a fixed template 105. The movable template 104 is fixedly installed on the mold 101, and the fixed template 105 is fixedly installed on the top of the mold 101.

[0028] Furthermore, the main body mechanism 1 also includes an ejector plate 106 and an ejector pin 107. The moving template 104 is fixedly mounted with the ejector plate 106, and the ejector plate 106 is fixedly mounted with the ejector pin 107.

[0029] Furthermore, the main body mechanism 1 also includes a guide post 108 and a guide sleeve 109. The guide post 108 is fixedly connected between the moving template 104 and the fixed template 105, and the guide sleeve 109 is fixedly installed on the surface of the guide post 108.

[0030] Furthermore, the casting mechanism 2 also includes a runner 204 and a gate 205. The runner 204 is fixedly installed at the tail end of the main runner 203, and the gate 205 is fixedly installed between the runner 204 and the cavity 201.

[0031] Furthermore, the casting mechanism 2 also includes a cooling water channel 206 and a cooling water pipe joint 207. The cooling water channel 206 is fixedly installed between the moving template 104 and the fixed template 105 inside the mold 101, and the cooling water pipe joint 207 is fixedly installed on one side surface of the mold 101.

[0032] Working principle: The forming structure includes a cavity 201, the part in the mold 101 used to form the outer shape of the permanent magnet motor housing. Its shape and size precisely match the design requirements of the permanent magnet motor housing, including the cylindrical surface, end face, and forming parts with features such as mounting holes and heat dissipation fins of the motor housing 103. The core 202 is used to form the inner cavity and internal structure of the motor housing, such as the core 202 used to form bearing mounting holes and stator mounting slots. The core 202 cooperates with the cavity 201 to jointly determine the final shape of the permanent magnet motor housing.

[0033] The parting structure, parting surface, is the surface that divides the mold 101 into two parts: the moving mold and the fixed mold. The position of the parting surface is usually determined according to the structural characteristics of the motor housing and the demolding method, so as to facilitate the smooth removal of the product after molding.

[0034] The gating system structure includes a main runner 203, which connects the injection molding machine nozzle to the runners 204 or cavities 201. Its size and shape affect the flow rate and pressure transmission of the molten plastic. The runners 204 distribute the molten plastic from the main runner 203 to each cavity 201. Their cross-sectional shape and size need to be designed according to the cavity layout of the mold 101 and the flow characteristics of the plastic to ensure uniform distribution of the melt to each cavity 201. The gate 205 is a narrow channel between the runners 204 and the cavities 201. Its function is to control the flow rate and volume of the molten plastic, allowing the melt to enter the cavities 201 at an appropriate speed and pressure. It also facilitates the separation of the solidified material from the product after molding.

[0035] The cooling system structure includes cooling water channels 206, which are installed in the moving and fixed mold sections of the mold 101. These channels are typically formed by drilling or milling. Circulating cooling water lowers the temperature of the mold 101, allowing the molten plastic to cool and solidify rapidly within the cavity 201, improving production efficiency and product quality. The layout of the cooling water channels 206 needs to be optimized based on the shape and thickness distribution of the motor housing to ensure uniform cooling. Cooling water pipe connectors 207 are used to connect the cooling water channels 206 to an external cooling water source. Quick-connect couplings are typically used to facilitate connection and disassembly of the mold 101 with the cooling system during installation and commissioning.

[0036] The demolding structure includes ejector pins 107, which are located on the moving mold side. When the mold 101 opens, the ejector pins 107, under the action of the ejection mechanism, eject the molded motor housing from the cavity 201 or core 202. The position and number of ejector pins 107 need to be rationally arranged according to the structure of the motor housing and demolding requirements to ensure that the product can be demolded smoothly and will not be deformed or damaged due to uneven ejection force. The ejector plate 106 is a component used to fix the ejector pins 107 and transmit the ejection power. It typically consists of two plates connected by an ejector rod. When the injection molding machine's ejection mechanism pushes the ejector plate 106, the ejector plate 106 drives the ejector pins 107 to move together, realizing the ejection of the product.

[0037] The guiding and positioning structure includes guide pillars 108 and guide sleeves 109. Guide pillars 108 and guide sleeves 109 are installed on the moving mold and the fixed mold, respectively. During mold closing, the guide pillars 108 insert into the guide sleeves 109, providing guidance and positioning to ensure accurate mold closing between the moving and fixed molds and prevent misalignment between the core 202 and the cavity 201, thereby ensuring the dimensional accuracy of the product. A positioning ring is installed on the fixed mold base plate of the mold 101 to position and engage with the nozzle of the injection molding machine, ensuring accurate alignment between the nozzle and the main runner 203 of the mold 101, allowing the molten plastic to smoothly enter the cavity 201 of the mold 101.

[0038] For mold preparation, mold 101 is installed on molding equipment such as injection molding machine or die casting machine, with the moving mold and fixed mold in the open state. At this time, it is necessary to check and confirm that all components of mold 101 are correct, ensuring that components such as cooling system and ejection mechanism are working properly, and then install the prepared core 202, slider and other components into the designated positions.

[0039] During the mold closing process, the mold closing mechanism of the injection molding machine or die casting machine drives the moving mold to move towards the fixed mold. Under the guidance of the guide pillar 108 and the guide sleeve 109, the moving mold and the fixed mold accurately close together, completely sealing the cavity 201. At the same time, the positioning ring accurately aligns with the nozzle of the injection molding machine, preparing for pouring.

[0040] During the pouring and filling process, liquid metal or plastic materials, under the pressure of an injection molding machine or die casting machine, enter the gating system of mold 101 from the nozzle. First, it passes through the main runner 203, then is evenly distributed to each gate 205 through the branch runners 204, and finally enters the cavity 201. During the filling process, the material flows within the cavity 201, gradually filling the entire cavity and forming the initial shape of the permanent magnet motor housing.

[0041] After casting, the cooling system begins operation. Circulating cooling water flows through cooling channels 206 within the mold 101, carrying away heat from the material in the cavity 201 and causing it to cool and solidify rapidly. Because the layout of the cooling channels 206 is optimized based on the shape and thickness distribution of the motor housing, it ensures uniform cooling of the material, avoiding localized overheating or overcooling, thereby improving the quality and dimensional accuracy of the product.

[0042] Mold opening and demolding: After the material cools and solidifies to a certain extent within the cavity 201, the mold opening mechanism of the injection molding machine or die casting machine drives the moving mold to separate from the fixed mold. First, the slider performs lateral core pulling under the action of the inclined guide post 108, allowing the parts with lateral concave-convex structures to be easily demolded. Then, the ejection mechanism starts working, and the ejector pin 107, driven by the ejector plate 106, ejects the formed permanent magnet motor housing from the cavity 201 or core 202, and the product leaves the mold 101, completing one molding cycle.

[0043] For product removal and cleaning, the permanent magnet motor housing after ejection is removed from the mold 101 by manual or automated equipment. Then the mold 101 is cleaned to remove residual waste and debris, in preparation for the next molding.

[0044] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A rapid prototyping mold for a permanent magnet motor housing, comprising a main body (1) and a casting mechanism (2), wherein the casting mechanism (2) is fixedly installed inside the main body (1), characterized in that: The main body (1) includes a mold (101), a base (102), and a shell (103). The base (102) is fixedly installed at the bottom of the mold (101), and the shell (103) is fixedly installed on the outer surface of the mold (101). The casting mechanism (2) includes a cavity (201), a core (202), and a main channel (203). The cavity (201) is fixedly installed in the center of the mold (101), the core (202) is fixedly installed in the center of the mold (101), and the main channel (203) is fixedly installed in the mold (101).

2. The rapid prototyping permanent magnet motor housing casting mold according to claim 1, characterized in that: The main body (1) also includes a movable template (104) and a fixed template (105). The movable template (104) is fixedly installed on the mold (101), and the fixed template (105) is fixedly installed on the top of the mold (101).

3. The rapid prototyping permanent magnet motor housing casting mold according to claim 2, characterized in that: The main body (1) also includes an ejector plate (106) and an ejector pin (107). The moving template (104) is fixedly installed with the ejector plate (106), and the ejector plate (106) is fixedly installed with the ejector pin (107).

4. The rapid prototyping permanent magnet motor housing casting mold according to claim 3, characterized in that: The main body (1) also includes a guide post (108) and a guide sleeve (109). The guide post (108) is fixedly connected between the moving template (104) and the fixed template (105), and the guide sleeve (109) is fixedly installed on the surface of the guide post (108).

5. The rapid prototyping permanent magnet motor housing casting mold according to claim 4, characterized in that: The casting mechanism (2) also includes a runner (204) and a gate (205). The runner (204) is fixedly installed at the end of the main runner (203), and the gate (205) is fixedly installed between the runner (204) and the cavity (201).

6. The rapid prototyping mold for a permanent magnet motor housing according to claim 5, characterized in that: The casting mechanism (2) also includes a cooling water channel (206) and a cooling water pipe joint (207). A cooling water channel (206) is fixedly installed between the moving template (104) and the fixed template (105) inside the mold (101). A cooling water pipe joint (207) is fixedly installed on one side surface of the mold (101).

Images