MIM large-size annular part pouring structure
By adopting a combination of barrier structure, heat exchange groove, heating groove, heating wire and temperature sensor in the MIM large-size annular parts casting structure, the problem of raw materials being retained and cooled for a long time during casting process is solved, and a more efficient casting process and better part quality is achieved.
Patent Information
- Application Number
- CN202422001351.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-19
AI Technical Summary
During the pouring process, the long retention time of the pouring raw materials may lead to cooling and the absorption of the mold heat, resulting in residual raw materials inside the pouring structure, blockage and affecting the filling effect and dimensional accuracy of the parts.
A large-size MIM annular parts casting structure including a moving template and a fixed template is designed. The barrier structure, heat exchange groove, heating groove, heating wire and temperature sensor are used to cooperate with each other to achieve preheating and temperature control of the moving template, avoiding the raw materials retained for a long time and cooling.
Through preheating and temperature control measures, long-term retention and cooling of raw materials in the inlet runner are avoided, residual raw materials and blockages inside the inlet structure are reduced, and the filling effect and dimensional accuracy of the parts are improved.
Smart Images
Figure CN222944482U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of MIM parts production, in particular to a MIM large-size annular part pouring structure. Background Art
[0002] The pouring structure of MIM large-size annular parts is a key link to ensure part quality, reduce deformation and improve production efficiency. In the MIM process, the design of the pouring structure directly affects the flow of molten metal, exhaust effect, and the dimensional accuracy and surface quality of the final parts.
[0003] When pouring large-sized MIM annular parts, a multi-channel design is used to reduce the resistance and temperature gradient of the molten metal during the flow process. However, due to the large size of the cast parts, when the casting raw materials flow into the casting area through the pouring structure, the casting raw materials remain in the pouring structure for a relatively long time. The long retention may cause the casting raw materials to cool down, which may affect the casting effect. When the casting raw materials flow in the pouring structure, and because the cast parts are large, the casting raw materials flow a long distance in the pouring structure, and a large amount of heat may be absorbed by the mold, resulting in cooling. If cooling occurs, the casting raw materials may remain inside the pouring structure, which may cause blockage. In severe cases, it may also affect the filling effect and dimensional accuracy of the parts.
[0004] In order to solve the above problems, the present application proposes a MIM large-size annular part casting structure. Utility Model Content
[0005] The utility model aims at the technical problems existing in the prior art and provides a MIM large-size annular part pouring structure.
[0006] The utility model provides a technical solution to the above-mentioned technical problems as follows: a MIM large-size annular part pouring structure, comprising a movable template and a fixed template, the movable template and the fixed template are adapted to each other, a blocking structure is arranged on the top of the movable template, a water inlet is provided on the movable template, a heat exchange groove is provided inside the movable template, the water inlet provided on the movable template is connected with the heat exchange groove provided on the movable template, a water outlet is provided on the movable template, a heating groove is provided on the movable template, a heating wire is provided on the movable template through the heating groove, a connecting hole is provided on the movable template through the heating groove, the connecting hole provided on the movable template is connected with the heat exchange groove provided on the movable template, a temperature sensor is provided on the top of the movable template, and the temperature measuring rod of the temperature sensor is located inside the heat exchange groove provided on the movable template.
[0007] The blocking structure includes an inlet pipe fixedly connected to the top of the moving template, the inlet pipe is communicated with the inlet runner opened in the moving template, an electric telescopic rod is fixedly connected to the top of the moving template, the telescopic end of the electric telescopic rod is fixedly connected to a blocking plate, the blocking plate is slidably connected to the inlet pipe, the outer wall of the inlet pipe is fixedly connected to a connecting shell, the interior of the connecting shell is slidably connected to a protective plate, the outer wall of the protective plate is slidably connected to the inlet pipe, and the blocking structure is provided to achieve sealing of the connection between the inlet pipe and the temperature sensor, thereby avoiding the accumulation of a large amount of residue inside the temperature sensor, thereby avoiding clogging of the temperature sensor.
[0008] A spring is fixedly connected inside the connecting shell, and one end of the spring is fixedly connected to the protective plate. By providing the spring, the protective plate is pushed, thereby avoiding affecting the subsequent use of the protective plate.
[0009] The outer wall of the movable template is fixedly connected with a heat-insulating shell, the outer wall of the fixed template is fixedly connected with a blocking shell, the top of the blocking shell is fixedly connected with a sealing ring, and the heat-insulating shell and the sealing ring are clamped with each other. By arranging the heat-insulating shell, the blocking shell and the sealing ring, the mold can be kept warm to avoid affecting the production of parts.
[0010] The top of the movable template is fixedly connected with a support rod, and the top of the support rod is movably connected to the bottom of the temperature sensor. By providing the support rod, the temperature sensor is supported, thereby avoiding damage to the temperature sensor.
[0011] The top of the movable template is fixedly connected with an insulation tube, the top of the insulation tube is movably connected to the bottom of the temperature sensor, the inner wall of the insulation tube is in contact with the outer wall of the temperature measuring rod of the temperature sensor, and the insulation tube is provided to protect the temperature measuring rod of the temperature sensor, thereby avoiding affecting the detection effect of the temperature sensor.
[0012] The beneficial effects of the utility model are:
[0013] The preheating and temperature control of the moving template are achieved through the mutual cooperation of the blocking structure, the water outlet, the heating tank, the heating wire, the connecting hole and the temperature sensor. The water inside the heating tank is heated by the heating wire, and the heat of the water inside the heating tank is transferred to the inside of the heat exchange tank through the connecting hole. In this way, the heat is transferred to the entire range of the moving template through the heating tank and the heat exchange tank. At the same time, when the raw material flows through the feed runner, the mutual cooperation of the heating tank and the heat exchange tank can prevent the raw material from being retained in the feed runner for a long time, thereby avoiding a large amount of raw material remaining in the feed runner, thereby avoiding affecting the production of the raw material.
[0014] By setting up a blocking structure, the connection between the pouring pipe and the temperature sensor is sealed. The blocking plate is moved by an electric telescopic rod so that the blocking plate seals the pouring pipe. This prevents the syringe from being connected to the pouring pipe for a long time when pouring large-sized annular parts, and the residual material in the syringe from dripping into the temperature sensor, thereby avoiding the accumulation of a large amount of residue in the temperature sensor and further avoiding the blockage of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This utility model is a schematic diagram showing the overall structure and related parts;
[0016] Figure 2 This utility model is a schematic diagram showing the heat exchange tank structure and its related parts;
[0017] Figure 3 This utility model is a schematic diagram showing the heating wire structure and its related parts;
[0018] Figure 4 This is a schematic diagram of the utility model for showing the blocking structure and its related parts.
[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0020] 1. Moving template; 2. Fixed template;
[0021] 3. Blocking structure; 301. Inlet pipe; 302. Electric telescopic rod; 303. Blocking plate; 304. Connecting shell; 305. Protective plate; 306. Spring;
[0022] 4. Water inlet; 5. Water outlet; 6. Heat exchange groove; 7. Heating groove; 8. Heating wire; 9. Connecting hole; 10. Temperature sensor; 11. Inlet runner; 12. Insulation shell; 13. Barrier shell; 14. Sealing ring; 15. Support rod; 16. Insulation tube. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.
[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.
[0025] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. In order to enable any technician in the field to implement and use the utility model, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the utility model can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the utility model obscure. Therefore, the utility model is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.
[0026] Reference Figure 1-3 The MIM large-size annular part pouring structure includes a movable template 1 and a fixed template 2, the movable template 1 and the fixed template 2 are adapted to each other, the movable template 1 is installed on the moving plate of the injection molding machine, and the fixed template 2 is installed on the fixed plate of the injection molding machine. A blocking structure 3 is arranged on the top of the movable template 1, and the blocking structure 3 is used to guide the raw material into the inside of the movable template 1 and the fixed template 2, and at the same time prevent the residual raw material in the syringe from flowing into the inside of the movable template 1. A water inlet 4 is provided on the movable template 1, and a heat exchange groove 6 is provided inside the movable template 1. The water inlet 4 is used to guide water into the inside of the heat exchange groove 6. The water inlet 4 provided on the movable template 1 is connected with the heat exchange groove 6 provided on the movable template 1. The movable template 1 is provided with a water outlet 5 through the heat exchange groove 6, and the water outlet 5 is used to transfer the hot water inside the heat exchange groove 6. A pouring channel 11 is provided on the movable template 1, and the pouring channel 11 is used to uniformly guide the raw materials into the connection between the movable template 1 and the fixed template 2. A heating groove 7 is provided on the movable template 1, and a heating wire 8 is provided through the heating groove 7 to heat the hot water inside the heating groove 7. A connecting hole 9 is provided on the movable template 1 through the heating groove 7, and the connecting hole 9 is used for heat exchange between the water inside the heating groove 7 and the heat exchange groove 6. The connecting hole 9 provided on the movable template 1 is connected with the heat exchange groove 6 provided on the movable template 1. A temperature sensor 10 is provided on the top of the movable template 1, and the temperature sensor 10 is used to measure the temperature of the water inside the heat exchange groove 6 and the heating groove 7 to avoid excessive water temperature affecting the efficiency and effect of casting. The temperature measuring rod of the temperature sensor 10 is located inside the heat exchange groove 6 provided on the movable template 1.
[0027] Reference Figure 1 and Figure 4 The blocking structure 3 includes a pouring pipe 301 fixedly connected to the top of the moving template 1, the pouring pipe 301 is used to connect the raw material injection molding machine, so as to guide the raw material into the runner 11, the pouring pipe 301 is connected to the pouring runner 11 opened in the moving template 1, and an electric telescopic rod 302 is fixedly connected to the top of the moving template 1, and a blocking plate 303 is fixedly connected to the telescopic end of the electric telescopic rod 302. The electric telescopic rod 302 is used to realize the movement of the blocking plate 303. The blocking is realized by the movement of the blocking plate 303. The baffle plate 303 seals the opening of the inlet pipe 301. The baffle plate 303 is slidably connected to the inlet pipe 301. The outer wall of the inlet pipe 301 is fixedly connected to a connecting shell 304. The interior of the connecting shell 304 is slidably connected to a protective plate 305. The connecting shell 304 is used to store and place the protective plate 305. At the same time, the protective plate 305 can prevent the syringe from being blocked by the inlet pipe 301 when injecting raw materials into the inlet runner 11. The outer wall of the protective plate 305 is slidably connected to the inlet pipe 301.
[0028] Reference Figure 4 A spring 306 is fixedly connected to the inside of the connecting shell 304, and one end of the spring 306 is fixedly connected to the protective plate 305. The spring 306 is used to push the protective plate 305 to prevent the protective plate 305 from being unable to return to its original position again after being pushed by the blocking plate 303, thereby avoiding affecting the subsequent use of the protective plate 305.
[0029] Reference Figure 1 The outer wall of the movable template 1 is fixedly connected with an insulation shell 12, the outer wall of the fixed template 2 is fixedly connected with a blocking shell 13, the top of the blocking shell 13 is fixedly connected with a sealing ring 14, the insulation shell 12 and the sealing ring 14 are clamped with each other, and the mutual cooperation of the insulation shell 12, the blocking shell 13 and the sealing ring 14 can achieve the insulation of the mold, avoid the mold from cooling down too quickly, improve the heating efficiency and maintain uniform temperature, so as to avoid affecting the production of parts.
[0030] Reference Figure 4 A support rod 15 is fixedly connected to the top of the movable template 1, and the top of the support rod 15 is movably connected to the bottom of the temperature sensor 10. The support rod 15 is used to support the temperature sensor 10 to avoid direct contact between the temperature sensor 10 and the movable template 1, thereby preventing the temperature inside the movable template 1 from being transferred to the temperature sensor 10, thereby avoiding damage to the temperature sensor 10.
[0031] Reference Figure 4The top of the movable template 1 is fixedly connected with an insulation tube 16, the top of the insulation tube 16 is movably connected to the bottom of the temperature sensor 10, the inner wall of the insulation tube 16 is in contact with the outer wall of the temperature measuring rod of the temperature sensor 10, and the insulation tube 16 is used to protect the temperature measuring rod of the temperature sensor 10 to prevent the temperature of the temperature measuring rod of the temperature sensor 10 from dropping when it is transferred and exposed to the outside world, thereby avoiding affecting the detection effect of the temperature sensor 10.
[0032] Working principle:
[0033] The MIM large-size annular part pouring structure, the staff installs the movable mold plate 1 and the fixed mold plate 2 to the required position, and connects the pouring pipe 301 to the syringe. After the connection is completed, the staff guides water into the heat exchange tank 6 and the heating tank 7 through the water inlet 4, and then heats the water in the heating tank 7 and the heat exchange tank 6 through the heating wire 8, so that the temperature is transferred to every part of the movable mold plate 1 through the water. After preheating, the staff flows the raw material into the movable mold plate 1 through the pouring pipe 301, and flows into the casting area of the movable mold plate 1 and the fixed mold plate 2 through the pouring runner 11 to complete the production of the parts. When the raw material flows into the casting area through the pouring runner 11, the water The temperature will be transferred to the inside of the raw material through the heating tank 7, so as to prevent the raw material from being retained in the inlet runner 11 for a long time and cooling down. At the same time, the heat exchange tank 6 will heat and keep warm the raw material inside the casting area of the movable mold plate 1 and the fixed mold plate 2, so as to prevent the raw material inside the casting area of the movable mold plate 1 and the fixed mold plate 2 from solidifying before the raw material has completely flowed in. After the raw material has completely flowed in, the staff uses the electric telescopic rod 302 to make the blocking plate 303 block the opening of the inlet pipe 301, so as to prevent the raw material remaining in the syringe from flowing into the interior of the inlet runner 11, thereby avoiding accumulation inside the inlet runner 11 and causing blockage of the inlet runner 11.
[0034] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.
[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A MIM large-size annular part pouring structure, comprising a movable die plate (1) and a fixed die plate (2), characterized in that: The movable mold plate (1) and the fixed mold plate (2) are adapted to each other, a blocking structure (3) is arranged on the top of the movable mold plate (1), a water inlet (4) is provided on the movable mold plate (1), a heat exchange groove (6) is provided inside the movable mold plate (1), the water inlet (4) provided on the movable mold plate (1) and the heat exchange groove (6) provided on the movable mold plate (1) are connected, a water outlet (5) is provided on the movable mold plate (1) through the heat exchange groove (6), and a pouring channel (11) is provided on the movable mold plate (1), The movable plate (1) is provided with a heating groove (7), the movable plate (1) is provided with a heating wire (8) through the heating groove (7), the movable plate (1) is provided with a connecting hole (9) through the heating groove (7), the connecting hole (9) provided in the movable plate (1) is connected with the heat exchange groove (6) provided in the movable plate (1), a temperature sensor (10) is provided on the top of the movable plate (1), and a temperature measuring rod of the temperature sensor (10) is located inside the heat exchange groove (6) provided in the movable plate (1).
2. The MIM large-size annular part pouring structure according to claim 1 is characterized in that: The blocking structure (3) comprises a pouring pipe (301) fixedly connected to the top of the movable template (1), the pouring pipe (301) being connected to a pouring runner (11) provided on the movable template (1), an electric telescopic rod (302) fixedly connected to the top of the movable template (1), a blocking plate (303) fixedly connected to the telescopic end of the electric telescopic rod (302), the blocking plate (303) being slidably connected to the pouring pipe (301), an outer wall of the pouring pipe (301) being fixedly connected to a connecting shell (304), a protective plate (305) being slidably connected to the interior of the connecting shell (304), and an outer wall of the protective plate (305) being slidably connected to the pouring pipe (301).
3. The MIM large-size annular part pouring structure according to claim 2 is characterized in that: A spring (306) is fixedly connected inside the connection shell (304), and one end of the spring (306) is fixedly connected to the protection plate (305).
4. The MIM large-size annular part pouring structure according to claim 1 is characterized in that: The outer wall of the movable mold plate (1) is fixedly connected to a heat-insulating shell (12), the outer wall of the fixed mold plate (2) is fixedly connected to a blocking shell (13), the top of the blocking shell (13) is fixedly connected to a sealing ring (14), and the heat-insulating shell (12) and the sealing ring (14) are mutually clamped.
5. The MIM large-size annular part pouring structure according to claim 1 is characterized in that: The top of the movable template (1) is fixedly connected to a support rod (15), and the top of the support rod (15) is movably connected to the bottom of the temperature sensor (10).
6. The MIM large-size annular part pouring structure according to claim 1 is characterized in that: The top of the movable template (1) is fixedly connected with a thermal insulation tube (16), the top of the thermal insulation tube (16) is movably connected to the bottom of the temperature sensor (10), and the inner wall of the thermal insulation tube (16) is in contact with the outer wall of the temperature measuring rod of the temperature sensor (10).