Insulation riser structure of front subframe mold

Abstract

The utility model discloses a thermal insulation riser structure of a front subframe mould, which comprises a riser main body, the bottom of the riser main body is provided with an interface which is in butt joint with a casting, the upper side of the interface is provided with a mounting hole, a ceramic thermal insulation sleeve is arranged in the mounting hole, and the middle part of the ceramic thermal insulation sleeve is provided with a through diversion through hole; the riser cover is arranged on the upper side of the riser main body, and a liquid through hole is formed in the middle of the riser cover. The metal riser can solve the problems that due to high heat conductivity of an existing metal riser, molten metal in the riser quickly loses heat, the feeding effect is poor, and the defects of shrinkage porosity, shrinkage cavities and the like are prone to being generated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat preservation riser, specifically to a heat preservation riser structure of front subframe die. BACKGROUND

[0002] In the automobile manufacturing industry, the front subframe is an important part of the automobile, which connects the engine, gearbox and front axle of the automobile, and bears the important functions of transmitting power and absorbing collision energy. Therefore, the casting quality of the front subframe directly affects the performance and safety of the automobile. In the casting process, the riser is an important part to ensure the quality of the casting. However, the traditional riser structure has shortcomings in heat preservation performance, especially in the casting process of low pressure casting of high thermal conductivity materials such as aluminum alloy, the metal liquid in the riser will quickly lose heat, resulting in poor feeding effect and prone to shrinkage, shrinkage hole and other defects. Therefore, it is particularly important to develop a riser structure with heat preservation performance. SUMMARY

[0003] The utility model provides a heat preservation riser structure of front subframe die can solve the problem of the existing metal riser because of high thermal conductivity, the metal liquid in the riser will quickly lose heat, resulting in poor feeding effect, and prone to shrinkage and shrinkage hole and other defects.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a heat preservation riser structure of front subframe die, including the riser main part, the bottom of riser main part is provided with the interface opposite to the casting, the upper side of interface is provided with mounting hole, and the ceramic heat preservation sleeve is arranged in the mounting hole, the middle part of ceramic heat preservation sleeve is provided with the through flow hole, the riser cover is arranged on the upper side of riser main part, the middle part of riser cover is provided with the liquid passage, and the liquid passage is used for the injection of metal liquid, the ceramic heat preservation sleeve effectively slows down the cooling speed of metal liquid, prolongs the liquid time of metal liquid, significantly improves the feeding efficiency of casting, and reduces the generation of shrinkage and shrinkage hole and other defects.

[0005] As a preferred, the cross section of the flow hole is gradually reduced from bottom to top to promote the flow of metal liquid.

[0006] As a preferred, the asbestos pad is arranged between the riser main part and the riser cover, the asbestos pad is used for buffering the pressure and friction force of the riser cover to the ceramic heat preservation sleeve, reducing the wear of the ceramic heat preservation sleeve, and the middle part of the asbestos pad is provided with a via hole to further heat preservation and allow the flow of metal liquid.

[0007] As preferred, the riser cover comprises a cover plate arranged above the asbestos pad, the upper side of the cover plate is provided with a protrusion, both sides of the protrusion are provided with through holes, the upper part of the riser body is provided with threaded holes corresponding to the through holes, and fasteners connected with the threaded holes are arranged in the through holes, so that processing and connection are convenient.

[0008] As preferred, the cross section of the interface gradually reduces from bottom to top, and the lower end of the interface is provided with a notch, so that the casting is quickly matched and positioned through the notch, and assembly is accelerated.

[0009] As preferred, the riser body and the riser cover are both made of heat-resistant steel material, and the use of the heat-resistant steel material improves the durability and high-temperature resistance of the riser structure.

[0010] As preferred, the outer side wall of the riser body is provided with a heat preservation layer made of ceramic fiber material, and the heat preservation performance is further improved.

[0011] As preferred, the outer side wall of the riser body is provided with a recessed groove, and installation is facilitated.

[0012] Compared with the prior art, the riser body has the beneficial effects that:

[0013] The structure is simple, the ceramic heat preservation sleeve is used, better corrosion resistance, heat preservation and high temperature resistance are achieved, the temperature of the feeding channel can be effectively ensured, waste at the riser position is reduced, the quality of the casting is improved, the liquid state time of the metal liquid in the riser body is prolonged, the feeding efficiency is improved, and the density and quality of the casting are improved. By arranging the heat preservation cotton, casting defects can be reduced, product performance can be improved, riser shrinkage and riser hardness defects can be reduced, the quality of the casting can be improved, the waste product rate can be reduced, and the production efficiency can be improved. The problems that the metal riser in the prior art has high thermal conductivity, the metal liquid in the riser loses heat quickly, the feeding effect is poor, and shrinkage and shrinkage hole defects are easily generated can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 It is an explosion view of the utility model;

[0017] Figure 4 It is a front view of the riser body of the utility model;

[0018] Figure 5 It is a perspective view of the riser body of the utility model;

[0019] Figure 6 The structure diagram of the riser cover of the utility model.

[0020] Reference signs:

[0021] 1, riser main body, 2, interface, 3, mounting hole, 4, ceramic heat preservation sleeve, 5, flow guide through hole, 6, riser cover, 7, liquid passage, 8, asbestos pad, 9, via hole, 10, cover plate, 11, protrusion, 12, through hole, 13, threaded hole, 14, notch, 15, slotted. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0023] As Figures 1-6 shown, the utility model discloses to solve the problem of the existing metal riser because of high thermal conductivity, the metal liquid in the riser can lose heat rapidly, leading to the shrinkage effect is poor, and the shrinkage and shrinkage hole and other defects are easy to produce, provides the following technical scheme: a front subframe die heat preservation riser structure, including the riser main body 1, the bottom of the riser main body 1 is provided with the interface 2 relative to the cast, the upper side of the interface 2 is provided with the mounting hole 3, the ceramic heat preservation sleeve 4 is arranged in the mounting hole 3, the ceramic heat preservation sleeve 4 is provided with the through flow guide through hole 5 in the middle part, the riser cover 6 is arranged on the upper side of the riser main body 1, the middle part of the riser cover 6 is provided with the liquid passage 7, and the liquid passage 7 is used for the injection of metal liquid, and the ceramic heat preservation sleeve 4 effectively slows down the cooling speed of the metal liquid, prolongs the liquid time of the metal liquid, significantly improves the shrinkage efficiency of the casting, and reduces the generation of shrinkage and shrinkage hole and other defects.

[0024] In the embodiment, as Figure 2 shown, the cross section of the flow guide through hole 5 gradually reduces from bottom to top to promote the flow of the metal liquid.

[0025] In the embodiment, as Figure 3 shown, the riser main body 1 and the riser cover 6 are provided with the asbestos pad 8, the asbestos pad 8 is used for buffering the pressure and friction force of the riser cover 6 to the ceramic heat preservation sleeve 4, reducing the abrasion of the ceramic heat preservation sleeve 4, and the middle part of the asbestos pad 8 is provided with the via hole 9 to further heat preservation and allow the flow of the metal liquid.

[0026] In the embodiment, as Figure 6As shown, the riser cover 6 comprises a cover plate 10 arranged above the asbestos pad 8, the upper side of the cover plate 10 is provided with a protrusion 11, the two sides of the protrusion 11 are provided with through holes 12, the upper part of the riser body 1 is provided with threaded holes 13 corresponding to the through holes 12, fasteners connected with the threaded holes 13 are arranged in the through holes 12, convenient processing and convenient connection.

[0027] In the embodiment, as shown in the drawings, Figure 5 As shown, the cross section of the interface 2 gradually decreases from bottom to top, the lower end of the interface 2 is provided with a notch 14, which is matched with the casting for rapid positioning and assembly.

[0028] In the embodiment, as shown in the drawings, Figure 1 As shown, the riser body 1 and the riser cover 6 are made of heat-resistant steel material, and the use of heat-resistant steel material improves the durability and high-temperature resistance of the riser structure.

[0029] In the embodiment, as shown in the drawings, Figure 1 As shown, the outer side wall of the riser body 1 is provided with a heat preservation layer, and the heat preservation layer is made of ceramic fiber material, which further improves the heat preservation performance.

[0030] In the embodiment, as shown in the drawings, Figure 5 As shown, the outer side wall of the riser body 1 is provided with a recessed slot 15, which is convenient for installation.

[0031] In the embodiment, as shown in the drawings, Figure 1 As shown, the ceramic heat preservation sleeve 4 is arranged in the mounting hole 3 of the riser body 1, the asbestos pad 4 is arranged on the upper side of the riser body 1, the riser cover 6 presses the asbestos pad 4, the bolt passes through the through hole 12 and is connected with the threaded hole 13, the fixation of the ceramic heat preservation sleeve 4 is completed, the heat preservation layer is wound on the outer periphery of the riser body, and the riser body 1 is installed on the casting through the interface 2. In the casting process, the metal liquid flows into the mold through the liquid hole 7, the metal liquid flows through the hole 9 and the flow guide through hole 5, the heat preservation effect of the ceramic heat preservation sleeve 4 is good, the metal liquid maintains a high-temperature state in the riser body 1 for a long time, the shrinkage of the casting is effectively supplemented, and the casting defects are reduced.

[0032] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0033] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0034] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. A heat-insulating riser structure for a front subframe mold, characterized in that, include: The riser body (1) has an interface (2) at the bottom that is connected to the casting. An installation hole (3) is provided on the upper side of the interface (2). A ceramic insulation sleeve (4) is provided in the installation hole (3). A through guide hole (5) is provided in the middle of the ceramic insulation sleeve (4). A riser cover (6) is disposed on the upper side of the riser body (1), and a liquid passage hole (7) is provided in the middle of the riser cover (6).

2. The heat-insulating riser structure of the front subframe mold according to claim 1, characterized in that: The cross-section of the guide hole (5) gradually decreases from bottom to top.

3. The heat-insulating riser structure of the front subframe mold according to claim 1, characterized in that: An asbestos gasket (8) is provided between the riser body (1) and the riser cover (6), and a perforation (9) is provided in the middle of the asbestos gasket (8).

4. The heat-insulating riser structure of the front subframe mold according to claim 3, characterized in that: The riser cover (6) includes a cover plate (10) covering the asbestos pad (8). The upper side of the cover plate (10) is provided with a protrusion (11). Through holes (12) are provided on both sides of the protrusion (11). The upper part of the riser body (1) is provided with a threaded hole (13) corresponding to the through hole (12). Fasteners connected to the threaded hole (13) are inserted in the through hole (12).

5. The heat-insulating riser structure of the front subframe mold according to claim 1, characterized in that: The cross-section of the interface (2) gradually decreases from bottom to top, and a notch (14) is provided at the lower end of the interface (2).

6. The heat-insulating riser structure of the front subframe mold according to claim 1, characterized in that: Both the riser body (1) and the riser cover (6) are made of heat-resistant steel.

7. The heat-insulating riser structure of the front subframe mold according to claim 1, characterized in that: An insulation layer is provided on the outer wall of the riser body (1).

8. The heat-insulating riser structure of the front subframe mold according to claim 1, characterized in that: The outer wall of the riser body (1) is provided with a concave groove (15).

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