Heat preservation and exhaust insert for counter-pressure casting of gooseneck type steering knuckle

Abstract

The heat preservation and exhaust insert comprises an insert body and a fixing bolt, a heat preservation cavity is formed in the insert body, exhaust grooves are evenly formed in the periphery of the outer wall of the insert body, exhaust lines are evenly arranged at the bottoms of the exhaust grooves, and the exhaust lines are arranged at marking positions of a casting. And a fixing bolt penetrates through the bolt through hole of the insert body to mount the insert on a mold. According to the utility model, the traditional insert is optimally designed, the design with the heat preservation cavity is adopted, and the exhaust scheme is mainly optimized by designing the exhaust line on the lineation of the casting, so that the local mold temperature can be improved in the casting process, the exhaust line of the insert is prevented from being blocked by molten aluminum, the exhaust effect is enhanced, the casting pore defect is effectively reduced, and the casting quality is improved. The internal quality of castings is improved.

Description

Technical Field

[0001] The utility model relates to the field of casting, specifically to a heat-insulating exhaust insert for differential pressure casting gooseneck steering knuckle Background Art

[0002] In the traditional differential pressure casting production process, the gooseneck steering knuckle has the risk of air entrapment caused by the pouring of molten aluminum due to structural reasons. Air holes are easily generated inside the gooseneck area of the steering knuckle, and it is usually necessary to set exhaust inserts at the corresponding positions. Traditional inserts are mostly solid structures. Since the inserts and the mold body are assembled, the temperature is usually lower than the mold body. It is impossible to increase the mold temperature at local positions to enhance the exhaust effect while ensuring exhaust. As a result, the exhaust effect at the insert position is poor, the internal quality of the casting is unstable during the production process, and air holes are easily generated, affecting the casting yield. Utility Model Content

[0003] In order to solve the above problems, the purpose of the present invention is to provide a thermal insulation and exhaust insert for differential pressure casting gooseneck steering knuckle, which can solve the technical problems in the background, has a simple structure, and has good thermal insulation and exhaust effects.

[0004] In order to solve the above technical problems, the technical solutions adopted in this application are:

[0005] A heat-insulating exhaust insert for differential pressure casting of a gooseneck steering knuckle comprises: an insert body and a fixing bolt. An insulation cavity is provided inside the insert body. Exhaust grooves are evenly provided around the outer wall of the insert body. Exhaust lines are evenly provided at the bottom of the exhaust grooves and the exhaust lines are provided at the marked positions of the casting. The fixing bolt passes through the bolt through-hole of the insert body to install the insert on the mold.

[0006] Preferably, the wall thickness of the insert body is 5-8 mm.

[0007] Preferably, thermal insulation paint is applied inside the thermal insulation cavity.

[0008] Preferably, the exhaust groove extends to the top of the insert, the exhaust groove depth is 0.12-0.15 mm, the exhaust groove width is 5-6 mm, and the exhaust groove interval is 5-6 mm.

[0009] Preferably, the vent line is provided on the score line of the casting.

[0010] Preferably, the exhaust line is processed by wire cutting, with a width of 0.15-0.2 mm and a height of 10-25 mm.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The heat-insulating and exhaust insert for a differential pressure casting gooseneck steering knuckle provided by the utility model optimizes the design of the traditional insert. It adopts a design with a heat-insulating cavity, and at the same time optimizes the exhaust scheme, mainly by designing the exhaust line on the casting line. During the casting process, it can increase the local mold temperature and prevent the exhaust line of the insert from being blocked by molten aluminum, strengthening the exhaust effect. It can effectively reduce the casting porosity defect, achieving the purpose of improving the internal quality of the casting and increasing the casting yield. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of the heat-insulating and exhaust insert for a differential pressure casting gooseneck steering knuckle of the present utility model;

[0015] Figure 2 It is a structural schematic diagram of the insert body of the heat-insulating and exhaust insert for a differential pressure casting gooseneck steering knuckle of the present utility model;

[0016] Figure 3 It is a side view of the heat-insulating and exhaust insert for a differential pressure casting gooseneck steering knuckle of the present utility model.

[0017] Wherein: 1 - insert body, 2 - fixing bolt, 3 - heat-insulating cavity, 4 - exhaust groove, 5 - exhaust line, 6 - casting body marking line, 7 - bolt through-hole. Detailed Embodiment

[0018] In the description, claims, and drawings of the present application, terms such as "first", "second", "third", and "fourth" are used to distinguish different objects rather than to describe a specific order. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices. The mention of "embodiment" in this text means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase at various positions in the description does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments. Hereinafter, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application. For the convenience of description, the same elements in the drawings are represented by the same or similar reference numerals, and the dimensions of the various parts shown are not necessarily drawn in actual proportional relationship. Regarding the description of orientation, such as the axial direction corresponding to the longitudinal length of the main body, and the orientation or positional relationship indicated by up, down, left, right, top, bottom, etc., are all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. The following descriptions of the various embodiments emphasize the differences between the embodiments. The same or similar parts can be referred to each other. For the sake of brevity, they will not be repeated one by one. The technical features in the different embodiments can be freely combined according to design needs to form more embodiments.

[0019] As Figures 1-3 shown in the figure, in this embodiment, a heat-insulating and exhaust insert for a differential-pressure casting gooseneck steering knuckle is provided, including: an insert body 1, a fixing bolt 2, a heat-insulating cavity 3, an exhaust groove 4, an exhaust line 5, a casting body marking line 6, and a bolt through-hole 7.

[0020] A heat-insulating cavity 3 is arranged inside the insert body 1, and a bolt through-hole 14 is arranged at the upper end of the insert body 1 and is installed on the mold through a fixing bolt 3.

[0021] As described above, the insert body 1 is designed with a heat preservation cavity 3. There is a recessed heat preservation cavity 3 inside, and the wall thickness around it is 5 - 8 mm. The heat preservation cavity 3 is usually used after brushing the cavity with heat preservation paint to achieve the effect of local heat preservation;

[0022] Exhaust grooves 4 are uniformly arranged around the outer wall of the insert body 1 and penetrate to the head of the insert. The depth is 0.12 - 0.15 mm, the width is 5 - 6 mm, and the interval is 5 - 6 mm;

[0023] Exhaust lines 5 are uniformly arranged at the bottom of the insert body 1, and the exhaust lines 5 are arranged on the scribed line 6 of the casting. Usually, wire cutting is used for processing. The width is 0.15 - 0.2 mm, and the height is 10 - 25 mm.

[0024] In this way, the heat preservation cavity 3 and the heat preservation paint inside the insert body 1 play the role of increasing the local mold temperature. At the same time, the exhaust lines 5 are arranged at the bottom of the insert body 1 and the exhaust lines 5 are arranged on the scribed line 6 of the casting body. This design can prevent the exhaust lines from being blocked by molten aluminum and play the role of strengthening exhaust. In addition, exhaust grooves 4 are uniformly arranged around the outer wall of the insert body 1. The above designs can all better promote the discharge of gas in the mold cavity.

[0025] The utility model optimizes the design of the traditional insert, adopts a design with a heat preservation cavity, and at the same time optimizes the exhaust scheme. The main thing is that the exhaust line is designed on the scribed line of the casting. During the casting process, it can increase the local mold temperature and avoid the exhaust line of the insert being blocked by molten aluminum, strengthening the exhaust effect. It can effectively reduce the casting porosity defect, achieve the purpose of improving the internal quality of the casting and increasing the casting yield.

[0026] The above has introduced the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be understood as a limitation to the present application. In the description of the present application, "a plurality" means two or more, unless otherwise clearly and specifically defined. Unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

Claims

1. A heat-insulating and exhaust insert for a gooseneck steering knuckle in differential pressure casting, characterized in that, Including: An insert body (1) and a fixing bolt (2). A heat preservation cavity (3) is arranged inside the insert body (1). Exhaust grooves (4) are evenly arranged around the outer wall of the insert body (1). Exhaust lines (5) are evenly arranged at the bottom of the exhaust grooves (4) and the exhaust lines are arranged on the casting body marking line (6). The fixing bolt (2) passes through the bolt through-hole (7) of the insert body (1) to install the insert on the mold.

2. The heat-insulating exhaust insert according to claim 1, characterized in that, The wall thickness around the insert body (1) is 5 - 8 mm.

3. The heat-insulating exhaust insert according to claim 1, characterized in that, A heat preservation coating is brushed inside the heat preservation cavity (3).

4. The heat-insulating exhaust insert according to claim 1, characterized in that: The exhaust grooves (4) extend to the top of the insert. The depth of the exhaust grooves (4) is 0.12 - 0.15 mm, the width of the exhaust grooves (4) is 5 - 6 mm, and the interval of the exhaust grooves (4) is 5 - 6 mm.

5. The heat-insulating exhaust insert according to claim 1, characterized in that The exhaust lines (5) are arranged on the casting body marking line (6).

6. The heat-insulating exhaust insert according to claim 5, characterized in that, The exhaust lines (5) are processed by wire cutting, with a width of 0.15 - 0.2 mm and a height of 10 - 25 mm.

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